CN111029990B - Crimping device for improving pre-binding force of joint between carbon fiber composite core wires and hardware fittings - Google Patents
Crimping device for improving pre-binding force of joint between carbon fiber composite core wires and hardware fittings Download PDFInfo
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- CN111029990B CN111029990B CN202010032791.1A CN202010032791A CN111029990B CN 111029990 B CN111029990 B CN 111029990B CN 202010032791 A CN202010032791 A CN 202010032791A CN 111029990 B CN111029990 B CN 111029990B
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 55
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 54
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 53
- 238000002788 crimping Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 22
- 238000010276 construction Methods 0.000 description 11
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 239000004020 conductor Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 241001631030 Explorator Species 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
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- Clamps And Clips (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention relates to the technical field of wire fitting fastening, in particular to a crimping device for improving the pre-binding force of a joint between a carbon fiber composite core wire and a fitting, which comprises an operation platform, an ultrahigh pressure hydraulic system, a stress stop block, a pressure transmitter and the like. The crimping device has strong interchangeability, and crimping and pre-tightening of the aluminum stranded wire carbon fiber composite core wire fitting joints with different specifications can be realized by adjusting the stress stop block and the pressure transmitter; the method can well solve the problems that in the prior crimping technology, the combination of a core rod and a cone fitting is not firm, slippage is easy to occur, and even 'wire falling' is caused.
Description
Technical Field
The invention relates to the technical field of wire fitting fastening, in particular to a crimping device for improving the pre-binding force of a joint between a carbon fiber composite core wire and a fitting.
Background
The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
The carbon fiber composite material core overhead conductor is a novel conductor developed by carbon fiber materials and has the remarkable characteristics of high temperature resistance, large capacity, low sag, low energy consumption, light weight, long service life, corrosion resistance and the like. The mechanical, thermal and electrical properties of the carbon fiber composite core lead are superior to those of the traditional lead, various technical bottlenecks existing in the overhead transmission field are comprehensively solved, and the carbon fiber composite core lead can be widely used for capacity-increasing transformation of old lines, new line construction and power station buses, and can be used for lines in special climates and geographical occasions such as large span, large fall, heavy ice areas, high pollution and the like. Therefore, the carbon fiber wire has obvious economic value and social benefit in the improvement of newly built power transmission lines or old lines.
One of the key technologies for carbon fiber composite core wire application is hardware, which is different from the traditional steel-cored aluminum stranded wire hardware. The carbon fiber composite core wire core rod is a stress body which is the same as the traditional aluminum stranded wire heat-resistant steel core, and is required to bear the load of the whole overhead wire in a complex environment and the influence of various climatic conditions. However, the present inventors found in practical tests that: failure of the carbon fiber composite core wire is mainly concentrated on the binding force of the carbon fiber composite core rod and the cone hardware. The main factors influencing the binding force are from two aspects, namely, the surface of the carbon fiber composite core rod is a micro elastomer; and secondly, the machining precision and the assembly precision of the cone hardware fitting. The bonding force is too large, so that the carbon fiber composite core rod is easily damaged, and cracks of the damaged core rod can be diffused under the action of external force, so that the core rod is broken and fails. Too small binding force can cause slippage between the carbon fiber composite core rod and the cone hardware fitting, and even slight slippage can cause failure of the carbon fiber composite core wire. The insufficient binding force between the carbon fiber composite core rod and the cone hardware fitting can cause the risks of heavy electric accidents such as 'disconnection'. However, in the field construction process of the carbon fiber composite core wire, if a worker operates according to a conventional wrench pre-tightening mode, the problem of insufficient binding force between the core rod and the cone fitting is easily caused, the field operation is complex, the pre-tightening force is uncontrollable, and no reference standard exists. If the wire is erected at high altitude, the crimping of the fitting joint in the conventional manner is more difficult to operate.
Disclosure of Invention
The invention aims to solve the problem that the binding force between a carbon fiber composite core wire mandrel and a cone hardware fitting is insufficient when a carbon fiber composite core wire is constructed. Therefore, the invention provides a crimping device for improving the pre-binding force of the joint between the carbon fiber composite core wire and the fitting, so as to solve the problems that in the prior crimping technology, the core rod and the cone fitting are not firmly combined, slippage is easy to occur and even 'wire dropping' is caused, and the prepared joint has the characteristics of scientific performance, advanced structure and reliable quality.
In order to achieve the aim of the invention, the invention adopts the technical means that:
First, the invention discloses a crimping device for improving the pre-binding force of a joint between a carbon fiber composite core wire and a hardware fitting, which comprises the following components: the hydraulic device comprises an operation platform, a hydraulic device, a pressure transmitter, a hardware fitting centering template, a positioning block, a stress stop block, a handle, an inlet and a hydraulic device power source; the operating platform is of a tubular structure with a cavity, one end of the operating platform is fixed with a hydraulic device, one end of the pressure transmitter is fixed on a plunger of the hydraulic device, and the other end of the pressure transmitter is provided with a guide hole. The hardware fitting centering die is fixed on the inner wall of the operation platform and is arranged adjacent to the pressure transmitter; the pressure transmitter can enter a channel formed by the hardware fitting centering die, the adjacent hardware fitting centering die of the positioning block is fixed on the inner wall of the operating platform, the positioning block is of a groove-shaped structure formed by three plates, the stress stop block is placed in the groove, a semicircular arc groove is formed in the part, which is contacted with the bottom of the groove, of the stress stop block, a handle is fixed on the opposite side of the semicircular arc groove, one end of the handle penetrates through the side wall of the operating platform, and the stress stop block can freely slide in the groove under the pulling of the handle; the guide inlet is formed in the end face of the other end of the operation platform and is directly communicated with the groove; the hydraulic power source is used for providing power for the hydraulic device.
Further, the operation platform is formed by welding (such as Q235) high-strength steel plates; preferably, the welded joint steel sheet is beveled to increase the welding area and thereby the strength of the welded steel sheet.
Furthermore, holes are punched in the wall surface of the operation platform according to the stress mode and stress points of the load of the operation platform, so that the whole weight can be reduced, and the operation platform is convenient to carry in field construction.
Further, the centering profiling is formed by sequentially arranging three centering profiling along the axial direction of the operation platform, so that the centering of the carbon fiber composite conductor core, the guide inlet, the hardware fitting center and the axis of the hydraulic device is ensured.
Further, the stress stop is subjected to quenching treatment to improve the surface hardness. The stress stop block is required to bear the pretightening force of the butterfly type hydraulic device on the hardware fitting, and the quenching treatment can enable the stress stop block to meet the requirements.
Further, the hydraulic device is a butterfly hydraulic device, the center of the plunger is internally provided with threads so as to be connected with the pressure transmitter in a threaded manner, and the butterfly hydraulic device has the advantages of small volume, light weight, compact structure, high jacking force and high efficiency, and has the same effect when placed at any angle.
Further, the hydraulic device power source and the hydraulic device are of split type design, and the hydraulic device power source and the hydraulic device are connected through a flexible high-pressure oil pipe quick connector; the manual pressurizing pump of the hydraulic device power source is integrated with the hydraulic oil tank, a pressure limiting valve is arranged in the pump body, a pressure relief device is arranged in the pump body, and oil can be automatically returned when the jacking weight exceeds the rated weight.
Furthermore, the pressure gauge of the hydraulic power source is a high-precision pointer type stainless steel shockproof pressure gauge, silicone oil is filled in the gauge head, the corrosion resistance can be guaranteed, the accuracy of pressure display can be guaranteed in a vibration environment, and the hydraulic power source is particularly suitable for construction operation in a complex field environment.
Further, the crimping device further comprises a centering rod, and the centering rod is consistent with the hardware in external dimension. The centering rod can be selected and matched, and when the hydraulic device is replaced, the center of the butterfly hydraulic device is aligned with the center of the operation platform through the correcting rod, so that the purpose of coaxial distribution of hardware fittings, wires, pressure transmitters and hydraulic devices is achieved.
Further, the handle and the stress stop block are connected through built-in threads, namely, the stress stop block is provided with built-in threads, and one end of the handle is a screw rod, so that the handle and the stress stop block are connected in a threaded manner. The slideway is used for ensuring the effective distance between the core rod and the hardware fitting in and out when the carbon fiber composite core wire is in compression joint; the positioning block is used for ensuring that the stress stop block enters a compression joint state.
Further, the carbon fiber composite core wire core rod is prepared from high-strength carbon fiber and glass fiber hybrid reinforced high-performance thermosetting resin through pultrusion compounding.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) The crimping device has the characteristics of compact structure, large jacking force, adjustable and controllable pretightening force and simple operation; the device is convenient and safe to use, quick to assemble and disassemble, has the same work efficiency at any angle position, and is suitable for ground and high-altitude operation.
(2) Considering field construction operation, no power supply problem exists, the crimping device adopts an ultrahigh-pressure hydraulic power source mode, and is convenient for construction operation.
(3) The crimping device has strong interchangeability, and crimping and pre-tightening of the aluminum stranded wire carbon fiber composite core wire fitting joints with different specifications can be realized by adjusting the stress stop block and the pressure transmitter; the method can well solve the problems that in the prior crimping technology, the combination of a core rod and a cone fitting is not firm, slippage is easy to occur, and even 'wire falling' is caused.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a front view of an embodiment of the pressure welding device of the present invention.
Fig. 2 is a right side view of the press-fit device according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a stress stop according to an embodiment of the invention.
Fig. 4 is a schematic structural diagram of a pressure transmitter according to an embodiment of the present invention.
Fig. 5 is a schematic view of a handle according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a hydraulic power source according to an embodiment of the present invention.
The above reference numerals represent respectively: the hydraulic device comprises a 1-operation platform, a 2-hydraulic device, a 3-pressure transmitter, a 4-hardware centering master, a 5-positioning block, a 6-stress stop block, a 7-handle, an 8-introduction port, a 9-guide hole, a 10-semicircular groove, an 11-built-in thread, a 12-screw, a 13-rear cover, a 14-screw cover, a 15-handle rod, a 16-oil cylinder, a 17-pump body, an 18-oil drain valve and a 19-oil outlet.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
For convenience of description, the words "upper", "lower", "left" and "right" in the present invention, if they mean only that the directions are consistent with the upper, lower, left, and right directions of the drawings per se, and do not limit the structure, only for convenience of description and simplification of the description, but do not indicate or imply that the apparatus or element to be referred to needs to have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Term interpretation section: the terms "mounted," "connected," "secured," and the like in the present invention are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the terms are used herein as specific meanings as understood by those of ordinary skill in the art, and are not limited to the following terms.
As described above, in the existing carbon fiber composite core wire in the field construction process, if a worker operates according to the conventional wrench pre-tightening mode, the problem of insufficient binding force between the mandrel and the cone hardware is easily caused, and the field operation is complicated and the pre-tightening force is uncontrollable. Therefore, the invention provides a crimping device for improving the pre-binding force of a joint between a carbon fiber composite core wire and a hardware fitting, and the invention is further described with reference to the specification, the drawings and the specific embodiments.
1-6, A crimping device for improving the pre-bonding force between a carbon fiber composite core wire and a fitting, which is designed by the invention, comprises: comprising the following steps: the hydraulic device comprises an operation platform 1, a hydraulic device 2, a pressure transmitter 3, a hardware fitting centering die 4, a positioning block 5, a stress stop 6, a handle 7, an inlet 8 and a hydraulic device power source.
The operation platform 1 is of a tubular structure with a cavity, one end of the operation platform is fixed with a hydraulic device 2, the hydraulic device is a butterfly hydraulic device, a thread 11 is arranged in the center of a plunger of the hydraulic device, the hydraulic device is connected with the pressure transmitter 3 through a screw rod, the butterfly hydraulic device is small in size, light in weight, compact in structure, large in top force and efficient, and the butterfly hydraulic device can be placed at any angle and has the same effect. The hydraulic device is connected with the pressure transmitter and then jointly transmits force, hydraulic power is transmitted to the outer cone of the hardware fitting through the pressure transmitter, the inner cone of the hardware fitting is restrained by the stop block, the outer cone of the hardware fitting clamps the carbon fiber composite core rod to generate displacement on the inner cone surface of the hardware fitting, and the carbon fiber composite core rod, the outer cone of the hardware fitting and the inner cone of the hardware fitting are preloaded under the action of the pressure transmitter and the stress stop block.
One end of the pressure transmitter 3 is fixed on a plunger of the hydraulic device 2, a guide hole 9 is formed in the end portion of the other end of the pressure transmitter 3, free in-out of the carbon fiber composite core rod when the carbon fiber composite wire is in crimping with the fitting joint is guaranteed, and the wire core rod is prevented from being blocked and damaged when being displaced along with the fitting outer cone.
The hardware fitting is arranged adjacent to the pressure transmitter 3 on the centering die 4; the pressure transmitter 3 can enter a channel formed by the hardware fitting centering explorator 4, and the centering explorator is formed by three centering explorators which are sequentially arranged along the axial direction of the operation platform 1, so that the centering of the carbon fiber composite conductor core, the lead-in port 8, the hardware fitting center and the axis of the hydraulic device is ensured.
Adjacent hardware fitting centering dies 4 of the positioning blocks 5 are fixed on the inner wall of the operating platform 1, the positioning blocks are of groove-shaped structures formed by three plates, the stress stop blocks 6 are placed in the grooves, the parts of the stress stop blocks 6, which are in contact with the bottoms of the grooves, are provided with semicircular arc grooves 10, handles 7 are fixed on opposite sides of the semicircular arc grooves 10, one ends of the handles 7 penetrate through the side walls of the operating platform 1, and the stress stop blocks 6 can freely slide in the grooves under the pulling of the handles 7; the inlet 8 is arranged on the end face of the other end of the operation platform 1 and is directly communicated with the groove.
The hydraulic device power source is used for providing power for the hydraulic device 2, the hydraulic device power source and the hydraulic device 2 are of split type design, and the hydraulic device power source and the hydraulic device 2 are connected through a flexible high-pressure oil pipe quick connector to provide hydraulic power. The hydraulic device is mainly for applying pressure to the hardware and the wire through the transmitter, and thus, the hydraulic device can be used as a power source for the hydraulic device 2.
It can be understood that, on the basis of the first embodiment, the following technical solutions may be derived, which include but are not limited to the following technical solutions, so as to solve different technical problems and achieve different purposes of the invention, and specific examples are as follows:
in the second embodiment, the operation platform 1 is formed by welding a high-strength steel plate Q235, and the steel plate is beveled at the welding seam to increase the welding area and thus the strength of the welded steel plate.
According to the third embodiment, according to the stress mode and stress point of the load of the operation platform, a plurality of small holes are formed in the wall surface of the operation platform 1, so that the whole weight can be reduced, the operation platform is convenient to carry in field construction, and the fact that the structural stability of the operation platform cannot be affected by the small holes is needed to be described.
In the fourth embodiment, the stress stopper 6 is subjected to quenching treatment to increase the surface hardness. The stress stop block 6 is switched in and out of the groove (slideway), and the stress stop block 6 has enough sliding freedom degree and accurate positioning function due to the constraint of the positioning block 5, the stress stop block 6 withdraws when the carbon fiber composite core wire penetrates, and the stress stop block 6 advances to be positioned when the hardware is in compression joint; therefore, the stress stop block 6 needs to bear the pretightening force of the butterfly hydraulic device on the hardware fitting, and the quenching treatment can enable the stress stop block 6 to meet the requirements.
In the fifth embodiment, the handle 7 and the stress stop block 6 are connected through an internal thread 11 (M8 thread), that is, the stress stop block 6 is provided with the internal thread 11, one end of the handle 7 is a M8 x 15 screw rod, and the handle and the stress stop block are fixedly connected through the cooperation of the screw rod and the internal thread. The stressed stop block is driven to enter and exit in the slideway by pushing and pulling the handle, so that the entering and exiting of the carbon fiber composite core wire during crimping can be realized. The slideway is used for ensuring the effective distance between the core rod and the hardware fitting in and out when the carbon fiber composite core wire is in compression joint; the positioning block is used for ensuring that the stress stop block enters a compression joint state.
In a sixth embodiment, the crimping device further includes a centering rod, and the centering rod is consistent with the hardware in external dimension. The centering rod can be selected and matched, and when the hydraulic device is replaced, the center of the butterfly hydraulic device is aligned with the center of the operation platform through the correcting rod, so that the purpose of coaxial distribution of hardware fittings, wires, pressure transmitters and hydraulic devices is achieved.
Seventh embodiment referring to fig. 6, the hydraulic power source comprises a rear cover 13, a rotary cover 14, a handle rod 15, an oil cylinder 16, a pump body 17, an oil drain valve 18 and an oil outlet 19; one end of the oil cylinder 16 is sealed by the rear cover 13, the screw cover 14 is close to the rear cover 13 and used for opening the rear cover, the other end of the oil cylinder 16 is provided with a pump body 17, the pump body 17 is provided with an oil drain valve 18 and an oil outlet 19, and a pressure limiting valve and a pressure relief device are arranged in the pump body; the oil outlet is connected with the inlet of the hydraulic device 2 through a flexible high-pressure oil pipe quick connector. The handle rod 15 and the pump body 17 are connected together to form a manual pressurizing pump, and the handle rod 15 is used for manually applying pressure to meet the requirement of no power supply in field construction operation.
Further, the pump body 17 is provided with a pressure gauge, the pressure gauge is a high-precision pointer type stainless steel shockproof pressure gauge, silicone oil is filled in the gauge head, the corrosion resistance can be guaranteed, the accuracy of pressure display can be guaranteed in a vibration environment, and the pressure gauge is particularly suitable for construction operation in a complex field environment.
The manual pressurizing pump, the oil cylinder and the pressure gauge of the hydraulic device power source are integrated into a whole, the pressure limiting valve is arranged in the pump body, and the pressure relief device is arranged in the pump body, so that the quick assembly, the pressure accurate control and the power-free state of field construction operation can be realized. When the jacking weight exceeds the rated weight, the oil can be automatically returned, and the ultrahigh-pressure hydraulic power source has the characteristics of scientific performance, advanced structure, light and convenient operation, reliable quality and the like.
In an eighth embodiment, taking ACCC-240/40 carbon fiber composite core wire and hardware as an example, the crimping device of the present invention is applied to pretightening the carbon fiber composite core wire and hardware, and the specific process is as follows:
firstly, preparing a carbon fiber composite core wire and a hardware fitting, inserting the wire into one end of an inner lining aluminum pipe with a knurling pattern, penetrating the inner lining aluminum pipe, and inserting the wire into an outer lining aluminum pipe according to the specification, and penetrating the outer lining aluminum pipe. And cutting the position, 2 cm away from the end, of the wire to be flat, marking the position, 20 cm away from the end, peeling and cutting off the stranded aluminum strand at the marked position, and cutting off the aluminum strand without damaging the carbon fiber composite core rod. Putting on the accessory glove in the strain clamp packaging box, uniformly polishing the carbon fiber composite core rod from which aluminum strands are stripped by the accessory gauze, roughening the surface of the core rod from a bright state, and wiping the surface of the part of the core rod by the glove. And sleeving the outer cone of the hardware fitting into the polished core rod, and then sleeving into the inner cone. The core rod is exposed out of the end face of the inner cone by 6-8 mm to tighten the outer cone and the inner cone along the straight line direction, and the outer cone and the inner cone are tightly forbidden to be twisted in the tightening operation. And then the accessories of the compression tool are assembled completely, namely, the butterfly type hydraulic device, the stop block and the pressure transmitter are arranged at the proper positions of the bracket of the compression tool. After the operation platform is assembled, the center of the butterfly hydraulic device shaft is centered with the center of the platform hole in the air by using a calibration rod. The connecting sleeve of the high-pressure rubber tube on the power source is matched with the joint of the butterfly type hydraulic device, and then the oil discharging screw on the hydraulic power source oil tank is screwed tightly, so that the hydraulic power source oil tank can be used. And then compacting the inner cone and the outer cone of the hardware fitting, penetrating the carbon fiber composite core into the wedge-shaped clamping seat, penetrating the carbon core into the wedge-shaped clamping seat, clamping the composite core, and integrally sliding into the wedge-shaped clamping seat, wherein the carbon core is exposed out of the wedge-shaped clamping seat by 5mm. And (3) vertically inserting an outer cone part (comprising an inner cone and a core rod) of the strain clamp pre-assembled with the lead into the compression tool.
The pressure transmitter is propped against the end face of the inner cone, the butterfly hydraulic device is manually vertically corrected and then begins to pressurize, and the pressure is controlled to be 15-16 MPa. After the crimping is finished, the oil discharge screw is unscrewed, the oil cylinder is unloaded, the top shaft is reset, and the hardware tool can be taken out.
Then assembling and crimping the inner lining aluminum pipe and the outer lining aluminum pipe, screwing a steel anchor of a strain clamp into an outer cone, fastening by a spanner, pushing the outer lining aluminum pipe to the steel anchor, pushing the lining aluminum pipe to a positioning position of the outer lining aluminum pipe, pressing a mould at a knurled position of the outer lining aluminum pipe, which is close to one side of the steel anchor, with the pressure of 75-80 MPa, sequentially pressing five moulds at a knurled mark position of the other side of the outer lining aluminum pipe, with the pressure of 75-80 MPa; in the sixth die, the pressure is 40 MPa.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Crimping device for improving pre-binding force of joint between carbon fiber composite core wire and hardware fitting, which is characterized by comprising the following components: the hydraulic device comprises an operation platform, a hydraulic device, a pressure transmitter, a hardware fitting centering template, a positioning block, a stress stop block, a handle, an inlet and a hydraulic device power source; the operating platform is of a tubular structure with a cavity, one end of the operating platform is fixed with a hydraulic device, one end of the pressure transmitter is fixed on a plunger of the hydraulic device, and the other end of the pressure transmitter is provided with a guide hole; the hardware fitting centering die is fixed on the inner wall of the operation platform and is arranged adjacent to the pressure transmitter; the pressure transmitter can enter a channel formed by the hardware fitting centering die;
The adjacent hardware fitting centering die of the positioning block is fixed on the inner wall of the operating platform, the positioning block is of a groove-shaped structure formed by three plates, the stress stop block is placed in the groove, a semicircular arc groove is formed in the part, which is in contact with the bottom of the groove, of the stress stop block, a handle is fixed on the opposite side of the semicircular arc groove, one end of the handle penetrates out of the side wall of the operating platform, and the stress stop block can freely slide in the groove under the pulling of the handle; the guide inlet is formed in the end face of the other end of the operation platform and is directly communicated with the groove; the hydraulic device power source is used for providing power for the hydraulic device;
Punching holes on the wall surface of the operation platform according to the stress mode and stress points of the load of the operation platform;
The hardware centering and profiling mold is formed by sequentially arranging three hardware centering and profiling molds along the axial direction of the operation platform, so that the centers of a core rod, an inlet, the center of the hardware and the axis of the hydraulic device of the carbon fiber composite core wire are ensured;
The hydraulic device is connected with the pressure transmitter and then jointly transmits force, hydraulic power is transmitted to the outer cone of the hardware fitting through the pressure transmitter, the inner cone of the hardware fitting is restrained by the force-bearing stop block, the outer cone of the hardware fitting clamps the core rod to displace on the inner cone surface of the hardware fitting, and the core rod, the outer cone of the hardware fitting and the inner cone of the hardware fitting are pre-tightened under the action of the pressure transmitter and the force-bearing stop block.
2. The crimping device for improving the pre-bonding force of the joint between the carbon fiber composite core wire and the hardware fitting according to claim 1, wherein the hydraulic device is a butterfly hydraulic device, and a plunger center of the butterfly hydraulic device is internally provided with threads and is in threaded connection with the pressure transmitter.
3. The crimping device for improving the pre-bonding force of a joint between a carbon fiber composite core wire and a fitting according to claim 1, further comprising a centering rod, wherein the centering rod is identical to the fitting in external dimension.
4. The crimping device for improving the pre-binding force of the joint between the carbon fiber composite core lead and the hardware fitting according to claim 1, wherein the handle and the stress stop block are connected through built-in threads, the stress stop block is provided with built-in threads, one end of the handle is a screw rod, and the handle and the stress stop block are fixedly connected through the cooperation of the screw rod and the built-in threads.
5. The crimping device for improving the pre-bonding force of the joint between the carbon fiber composite core wire and the hardware fitting according to any one of claims 1 to 4, wherein the operation platform is formed by welding a high-strength steel plate; the steel plate at the welded joint is subjected to groove treatment.
6. The crimping device for improving the pre-bonding force of the joint between the carbon fiber composite core wire and the hardware as claimed in any one of claims 1 to 4, wherein the stress stop is subjected to quenching treatment.
7. The crimping device for improving the pre-bonding force of the joint between the carbon fiber composite core wire and the hardware fitting according to any one of claims 1 to 4, wherein the hydraulic power source comprises a rear cover, a screw cover, a handle rod, an oil cylinder, a pump body, an oil drain valve and an oil outlet; one end of the oil cylinder is sealed through the rear cover, the screw cover is close to the rear cover and is used for opening the rear cover, the other end of the oil cylinder is provided with a pump body, an oil drain valve and an oil outlet are arranged on the pump body, and a pressure limiting valve and a pressure relief device are arranged in the pump body; the oil outlet is connected with the inlet of the hydraulic device through a flexible high-pressure oil pipe quick connector; the handle rod is connected with the pump body to form a manual pressurizing pump together; the pump body is provided with a pressure gauge.
8. The crimping device for improving the pre-bonding force of the joint between the carbon fiber composite core wire and the hardware fitting according to claim 7, wherein the pressure gauge is a high-precision pointer type stainless steel shockproof pressure gauge, and silicone oil is filled in the gauge head.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010032791.1A CN111029990B (en) | 2020-01-13 | 2020-01-13 | Crimping device for improving pre-binding force of joint between carbon fiber composite core wires and hardware fittings |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010032791.1A CN111029990B (en) | 2020-01-13 | 2020-01-13 | Crimping device for improving pre-binding force of joint between carbon fiber composite core wires and hardware fittings |
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| CN202010032791.1A Active CN111029990B (en) | 2020-01-13 | 2020-01-13 | Crimping device for improving pre-binding force of joint between carbon fiber composite core wires and hardware fittings |
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| CN112340171A (en) * | 2020-11-02 | 2021-02-09 | 合肥柱石科技有限公司 | Clamping mechanism for tubular product |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211605937U (en) * | 2020-01-13 | 2020-09-29 | 山东宽原新材料科技有限公司 | Crimping device for improving pre-bonding force of joint between carbon fiber composite core wire and hardware fitting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1207889A (en) * | 1968-05-03 | 1970-10-07 | Amp Inc | Insulation stripping unit for attachment to an electrical connector crimping press and a connector crimping press having insulation stripping means |
| CN201440596U (en) * | 2009-04-30 | 2010-04-21 | 华北电力科学研究院有限责任公司 | Matched hardware tool for carbon fiber composite core lead wire |
| CN107370074B (en) * | 2017-08-22 | 2023-11-10 | 国网冀北电力有限公司电力科学研究院 | Pre-pressing and compacting device and method for carbon fiber composite core wire matched hardware fitting |
| CN207353802U (en) * | 2017-11-03 | 2018-05-11 | 温州亿固电力科技有限公司 | A kind of carbon fiber composite core lead fixture |
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| CN211605937U (en) * | 2020-01-13 | 2020-09-29 | 山东宽原新材料科技有限公司 | Crimping device for improving pre-bonding force of joint between carbon fiber composite core wire and hardware fitting |
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