CN114619184A - Preheating welding device for welding workpiece - Google Patents
Preheating welding device for welding workpiece Download PDFInfo
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- CN114619184A CN114619184A CN202210519241.1A CN202210519241A CN114619184A CN 114619184 A CN114619184 A CN 114619184A CN 202210519241 A CN202210519241 A CN 202210519241A CN 114619184 A CN114619184 A CN 114619184A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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Abstract
The invention relates to the field of metal welding, in particular to a preheating welding device for a welding workpiece. The device aims to solve the technical problems that the vicinity of a pipeline welding port cannot be preheated together, and after preheating is completed, the device is disassembled to carry out welding operation, so that part of heat of the pipeline is lost, and the welding quality is influenced. The invention provides a preheating welding device for welding workpieces, which comprises a heating system, a second connecting shaft and the like; the second connecting shaft is connected with a heating system. The invention solves the problem that the existing welding preheating device can not preheat two pipelines with different pipe diameters simultaneously, expands the application range of the device, solves the problem that the existing welding preheating device has larger volume and hinders welding of workers, so that the workers are lighter during welding, and the universal joint structure of the device can ensure that the device can move in a curve less than or equal to ninety degrees, thereby expanding the application range of the device and ensuring that the device is more practical.
Description
Technical Field
The invention relates to the field of metal welding, in particular to a preheating welding device for a welding workpiece.
Background
Welding, also known as fusion or fusion, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, in a heated, high temperature or high pressure manner, which requires preheating of the materials in advance before welding to control the heat of the workpieces during welding, thereby avoiding the formation of hardened structures and preventing the formation of cold cracks.
The existing welding preheating device has large volume and is inconvenient to move, the welding preheating device cannot be moved according to the requirements of users, the operation of the existing welding preheating device is complicated, the device is inconvenient to preheat a bent pipe or a pipeline with different diameters, the welding preheating device cannot preheat the positions near the welding openings of the two pipelines together during preheating, certain temperature difference exists between the two pipelines during preheating, some preheating devices need to disassemble the device after preheating is completed so that workers can weld the pipelines, the operation inevitably causes the pipelines to lose partial heat so that the temperature of the welding positions does not reach the standard and the welding quality is influenced, when the pipelines with different diameters are welded, the pipe diameters of splicing positions are different, the two pipelines cannot be preheated simultaneously during preheating, the welding effect of the workers is influenced, and the workers are often influenced by the large volume of the device during welding due to the relation of the volume of the device, thereby causing work interruption to affect the welding effect.
Disclosure of Invention
The invention provides a preheating welding device for welding workpieces, aiming at overcoming the defects that a welding device cannot preheat the positions near welding ports of two pipelines together, and the welding quality is influenced because the device is disassembled to carry out welding operation after preheating is finished, so that the pipelines lose part of heat.
The technical scheme is as follows: a preheating welding device for welding workpieces comprises a second connecting shaft, a heating system, a first fixed half ring, a second fixed half ring, a connector and a welding gun joint; the outer surface of the second connecting shaft is connected with a heating system; the heating system is used for heating the inner wall of the pipeline and can simultaneously heat pipelines with different pipe diameters; one end of the first fixed semi-ring is movably connected with a second fixed semi-ring, and the other end of the first fixed semi-ring is locked with the second fixed semi-ring through a connector; and the first fixed half ring is provided with a welding gun joint for installing welding equipment.
Preferably, the outer surface of the second connecting shaft is provided with a second guide groove structure.
Preferably, the heating system comprises a heating hinge assembly and a hinge telescopic assembly, and the outer surface of the second connecting shaft is connected with the two hinge telescopic assemblies which are distributed left and right; and the two hinge telescopic assemblies are connected with a heating hinge assembly.
Preferably, the left hinge telescopic assembly comprises a first mounting disc, a second mounting disc, a first motor, a first shaft sleeve, a first screw rod, a first nut and a base; a first mounting disc is fixedly connected to the left part of the outer surface of the second connecting shaft; a first motor is fixedly connected to the left part of the outer surface of the second connecting shaft and is positioned on the left side of the first mounting disc; the output shaft of the first motor is fixedly connected with a first shaft sleeve; the front part of the first shaft sleeve is fixedly connected with a first screw rod; a first nut is screwed on the first screw rod; the second guide groove is connected with a second mounting disc in a sliding manner; a plurality of bases are fixedly connected in the groove on the outer surface of the first mounting plate; a plurality of bases are fixedly connected in the grooves on the outer surface of the second mounting plate; the base is connected with a heating hinge assembly; the first shaft sleeve penetrates through the first mounting disc and is not in contact with the first mounting disc; the second mounting plate is screwed with the first nut.
Preferably, the heating hinge assembly comprises a first connecting rod, a second connecting rod, a third connecting rod, a copper block mounting seat and a heating copper block; each base is movably connected with a first connecting rod; the middle parts of the left first connecting rods are respectively and movably connected with a second connecting rod, and the middle parts of the right first connecting rods are respectively and movably connected with a third connecting rod; the second connecting rod is movably connected with the third connecting rod; two first connecting rods in the same group are movably connected with a copper block mounting seat together; and each copper block mounting seat is provided with a heating copper block.
Preferably, each copper block mounting seat is fixedly connected with a laser lamp bead.
Preferably, the two first connecting rods are positioned in the same hinge telescopic assembly and positioned on the same horizontal line to form a group, and the whole body is in a splayed shape.
Preferably, the device also comprises a first connecting shaft, a first connecting block, a second connecting block, a third connecting shaft and a moving system; a first guide groove is formed in the outer surface of the first connecting shaft; the front part of the first connecting shaft is movably connected with a first connecting block; the upper end and the lower end of the first connecting block are movably connected with a second connecting shaft; the right part of the second connecting shaft is movably connected with a second connecting block; the second connecting block is movably connected with a third connecting shaft; the first connecting shaft, the first connecting block, the second connecting shaft, the second connecting block and the third connecting shaft form a universal joint set; and the first connecting shaft and the third connecting shaft are respectively connected with a moving system.
Preferably, the third connecting shaft has a third guide groove formed on an outer surface thereof.
Preferably, the moving system on the third connecting shaft comprises a third mounting disc, a fourth mounting disc, a second motor, a second shaft sleeve, a second screw rod, a second nut, a first connecting plate, a second connecting plate, a telescopic push rod, a fourth connecting rod, a first electric-driven pinch roller and an auxiliary positioning wheel; a third mounting disc is fixedly connected to the left part of the outer surface of the third connecting shaft; a fourth mounting disc is connected to the third guide groove in a sliding manner; a second motor is fixedly connected to the left side surface of the third mounting plate; a second shaft sleeve is fixedly connected with an output shaft of the second motor; the front part of the second shaft sleeve is fixedly connected with a second screw rod; the second screw rod is screwed with a second nut; the second nut is fixedly connected with the fourth mounting plate; the outer surfaces of the third mounting disc and the fourth mounting disc are respectively and movably connected with three first connecting plates in a circumferential array manner; two first connecting plates on the same connecting line are movably connected with each other; the middle parts of the two first connecting plates on the same connecting line are respectively movably connected with a second connecting plate, and the two second connecting plates are mutually movably connected; the middle parts of the movable connecting shafts of the two first connecting plates on the same connecting line are provided with first electrically-driven pinch rollers; the middle part of each first connecting plate is movably connected with a telescopic push rod; each telescopic push rod is movably connected with a fourth connecting rod, and the fourth connecting rods are rotatably connected with the movable connecting shafts of the first connecting plates; an auxiliary positioning wheel is rotatably connected between the two fourth connecting rods.
Has the advantages that: the invention solves the problem that the existing welding preheating device can not preheat two pipelines with different pipe diameters simultaneously, expands the application range of the device, solves the problem that the existing welding preheating device has larger volume and hinders welding of workers, and ensures that the workers are lighter and more convenient in welding and easier in welding and have higher efficiency. The device is preheated in the pipeline, so that the device does not need to be opened or disassembled during welding, thereby reducing the heat loss, improving the welding quality, facilitating the work personnel, supporting the device from the inside to the outside for preheating, well centering the pipeline and improving the welding precision of the pipeline;
the problem of the removal of device in the pipeline is solved for the device can be nimble in the pipeline and remove, and the universal joint structure of device makes the device can remove in the bend of less than or equal to ninety degrees, has enlarged the application range of device, makes the device more practical.
Drawings
FIG. 1 is a schematic view of a first combination of a gimbal assembly, a heating system, and a moving system according to the present invention;
FIG. 2 is a schematic view of the first stationary half ring, the second stationary half ring, the connector and the torch joint assembly of the present invention;
FIG. 3 is a schematic view of a second combination of the gimbal assembly, heating system and moving system of the present invention;
FIG. 4 is a schematic view of a third combination of the gimbal assembly, the heating system and the moving system of the present invention;
FIG. 5 is a schematic view of a fourth combination of the gimbal assembly, the heating system and the moving system of the present invention;
FIG. 6 is a schematic view of a second connecting shaft and a heating system according to the present invention;
FIG. 7 is a schematic view of a first partial configuration of the heating system of the present invention;
FIG. 8 is a schematic view of a second partial structure of the heating system of the present invention;
FIG. 9 is a schematic view of a third partial configuration of the heating system of the present invention;
FIG. 10 is a schematic view of a fourth embodiment of the heating system of the present invention;
FIG. 11 is a schematic view of a fifth embodiment of the heating system of the present invention;
FIG. 12 is a partial schematic view of the present invention;
FIG. 13 is an enlarged view of the invention at A;
FIG. 14 is an enlarged view of the invention at B;
FIG. 15 is an exploded view of the gimbal assembly of the present invention.
Description of reference numerals: 3-a second connecting shaft, 501-a first stationary half ring, 502-a second stationary half ring, 503-a connector, 504-a welding gun joint, 201-a first mounting plate, 202-a second mounting plate, 203-a first motor, 204-a first shaft sleeve, 205-a first lead screw, 206-a first nut, 207-a base, 208-a first connecting rod, 209-a second connecting rod, 210-a third connecting rod, 211-a copper block mounting base, 212-a heating copper block, 213-a laser lamp bead, 1-a first connecting shaft, 2-a first connecting block, 4-a second connecting block, 5-a third connecting shaft, 301-a third mounting plate, 302-a fourth mounting plate, 303-a second motor, 304-a second shaft sleeve, 305-a second lead screw, 306-a second nut, 307-a first connecting plate, 308-a second connecting plate, 309-a telescopic push rod, 310-a fourth connecting rod, 311-a first electric driving and pressing wheel, 312-an auxiliary positioning wheel, 1 a-a first guide groove, 3 a-a second guide groove and 5 a-a third guide groove.
Detailed Description
The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.
Example 1
A preheating welding device for welding workpieces, hereinafter referred to as the preheating welding device, as shown in fig. 1-11, comprises a second connecting shaft 3, a heating system, a first stationary half ring 501, a second stationary half ring 502, a connector 503 and a welding gun connector 504; a second guide groove 3a structure is formed in the outer surface of the second connecting shaft 3; a heating system is fixedly connected to the outer surface of the second connecting shaft 3 and is in sliding connection with the second connecting shaft 3; one end of the first stationary half ring 501 is hinged with a second stationary half ring 502, and the other end is locked with the second stationary half ring 502 through a connector 503; the first stationary half-ring 501 is provided with a torch joint 504.
This preheating device's heating system installs two relatively independent heater blocks, in order to solve when the pipeline of welding diameter variation in size because grafting department pipe diameter is different when preheating, can't carry out the problem of preheating simultaneously to two pipelines, clear up heating system earlier before the use, whether the heater block among the inspection heating system is intact, inspection second connecting axle 3, whether have the foreign matter in the second guide way 3a in order to prevent that the foreign matter from scraping or blocking second guide way 3a, then start heating system adjusts this preheating device to the size that can plug into the pipeline, and with this preheating device stopper pipeline preheating department, readjust this preheating device messenger device heating part and tightly laminate the inside pipe wall, so both can effectually heat the pipeline and can carry out the centering to the pipeline of welding again.
When welding conditions with different pipe diameters are met, two heating parts in the heating system can be respectively adjusted, so that the device is respectively attached to respective pipe diameters to realize adaptive preheating, and the device can be continuously used only by shrinking the heating system and pulling out the pipeline for cleaning after welding is finished.
During welding, the first stationary half ring 501 and the second stationary half ring 502 are manually buckled on the outer surface of the pipeline, then the connector 503 is used for locking, then the welding equipment is installed on the welding gun connector 504, the equipment is enabled to move circumferentially on the pipeline through the travelling wheels in the first stationary half ring 501 and the second stationary half ring 502, and further, the radius of the travelling wheels can be changed to adapt to pipelines with different sizes, so that the welding equipment is opposite to a welding seam.
As shown in fig. 1-6, the heating system comprises a heating hinge assembly and a hinge telescopic assembly, and two hinge telescopic assemblies distributed left and right are connected to the outer surface of the second connecting shaft 3; and the two hinge telescopic assemblies are connected with a heating hinge assembly.
As shown in fig. 6 and 7, the left hinge telescopic assembly includes a first mounting plate 201, a second mounting plate 202, a first motor 203, a first shaft sleeve 204, a first lead screw 205, a first nut 206 and a base 207; a first mounting disc 201 is fixedly connected to the left part of the outer surface of the second connecting shaft 3; a first motor 203 is fixedly connected to the left part of the outer surface of the second connecting shaft 3 and positioned on the left side of the first mounting disc 201; a first shaft sleeve 204 is fixedly connected to an output shaft of the first motor 203; a first screw rod 205 is fixedly connected to the front part of the first shaft sleeve 204; a first nut 206 is screwed on the first screw rod 205; a second mounting plate 202 is slidably connected to the second guide groove 3 a; a plurality of bases 207 are fixedly connected in the groove on the outer surface of the first mounting plate 201; a plurality of bases 207 are fixedly connected in the grooves on the outer surface of the second mounting plate 202; a heating hinge assembly is connected to the base 207; the first shaft sleeve 204 penetrates through the first mounting plate 201, and the first shaft sleeve 204 is not in contact with the first mounting plate 201; the second mounting plate 202 is threadedly coupled to the first nut 206.
As shown in fig. 7-11, the heating hinge assembly comprises a first connecting rod 208, a second connecting rod 209, a third connecting rod 210, a copper block mounting seat 211 and a heating copper block 212; each base 207 is hinged with a first connecting rod 208; the middle parts of the left first connecting rods 208 are respectively hinged with a second connecting rod 209, and the middle parts of the right first connecting rods 208 are respectively hinged with a third connecting rod 210; the second connecting rod 209 is hinged with a third connecting rod 210; two first connecting rods 208 which are positioned in the same hinge telescopic assembly and positioned on the same horizontal line form a group and are splayed integrally; two first connecting rods 208 in the same group are hinged with a copper block mounting seat 211 together; each copper block mounting seat 211 is provided with a heating copper block 212; each copper block mounting seat 211 is fixedly connected with a laser lamp bead 213.
When the preheating welding device is used, the first motor 203 is started firstly, an output shaft of the first motor 203 drives the first shaft sleeve 204 and the first lead screw 205 to rotate, and then the second mounting disc 202 is driven by the first nut 206 to slide on the second guide groove 3a on the second connecting shaft 3, so that the second mounting disc 202 drives the heating hinge assembly to extend and contract, in the process that the second mounting disc 202 slides on the second guide groove 3a on the second connecting shaft 3, the two first connecting rods 208 in the same group are enabled to be mutually far away from or close to the connecting end of the base 207, and the heating copper block 212 is enabled to move towards the direction far away from or close to the axis of the second connecting shaft 3, the heating hinge assembly is enabled to be adjusted to the proper size corresponding to a pipeline to be welded, and the heating system can be easily placed in the pipeline.
Then, the laser lamp beads 213 are lightened to enable laser to penetrate through the welding gap, the heating copper block 212 is just fallen on the welding gap, the first motor 203 is started to enable the first screw rod 205 to rotate, the first nut 206, the base 207, the first connecting rod 208, the second connecting rod 209, the third connecting rod 210 and the copper block mounting seat 211 are linked, the heating copper block 212 is enabled to expand outwards, the heating copper block 212 is enabled to be tightly attached to the inner wall of the pipe, and therefore the heating copper block 212 can effectively heat the pipe and can center the welded pipe.
Example 2
The present embodiment is further optimized based on embodiment 1, and as shown in fig. 1 to fig. 15, the present embodiment further includes a first connecting shaft 1, a first connecting block 2, a second connecting block 4, a third connecting shaft 5 and a moving system; the outer surface of the first connecting shaft 1 is provided with a first guide groove 1 a; the front part of the first connecting shaft 1 is hinged with a first connecting block 2; the upper end and the lower end of the first connecting block 2 are hinged with a second connecting shaft 3; a second connecting block 4 is hinged to the right part of the second connecting shaft 3; the second connecting block 4 is hinged with a third connecting shaft 5; a third guide groove 5a is formed in the outer surface of the third connecting shaft 5; the first connecting shaft 1, the first connecting block 2, the second connecting shaft 3, the second connecting block 4 and the third connecting shaft 5 form a universal joint set; a moving system is connected to each of the first connecting shaft 1 and the third connecting shaft 5.
As shown in fig. 12 and 13, the moving system on the third connecting shaft 5 includes a third mounting plate 301, a fourth mounting plate 302, a second motor 303, a second shaft sleeve 304, a second screw 305, a second nut 306, a first connecting plate 307, a second connecting plate 308, a telescopic push rod 309, a fourth connecting plate 310, a first electrically-driven pinch roller 311 and an auxiliary positioning wheel 312; a third mounting disc 301 is fixedly connected to the left part of the outer surface of the third connecting shaft 5; a fourth mounting plate 302 is slidably connected to the third guide groove 5 a; a second motor 303 is fixedly connected to the left side surface of the third mounting plate 301; a second shaft sleeve 304 is fixedly connected with an output shaft of the second motor 303; a second screw rod 305 is fixedly connected to the front part of the second shaft sleeve 304; the second screw 305 is screwed with a second nut 306; the second nut 306 is fixedly connected with the fourth mounting plate 302; three first connecting plates 307 are hinged to the outer surfaces of the third mounting disc 301 and the fourth mounting disc 302 in a circumferential array mode; two first connecting plates 307 on the same connecting line are hinged with each other; the middle parts of the two first connecting plates 307 on the same connecting line are respectively hinged with a second connecting plate 308, and the two second connecting plates 308 are hinged with each other; the middle parts of the articulated shafts of the two first connecting plates 307 on the same connecting line are provided with first electric driving pinch rollers 311; the middle part of each first connecting plate 307 is hinged with a telescopic push rod 309; each telescopic push rod 309 is hinged with a fourth connecting rod 310, and the fourth connecting rods 310 are rotatably connected with the hinge shafts of the first connecting plates 307; an auxiliary positioning wheel 312 is rotatably connected between the two fourth connecting rods 310.
When the preheating welding device is used, the second motor 303 is started firstly, the output shaft of the second motor 303 drives the second shaft sleeve 304 and the second screw mandrel 305 to rotate, the second screw mandrel 305 rotates to drive the second nut 306 and the fourth mounting disc 302 to move, the fourth mounting disc 302 slides on the third guide groove 5a, so as to drive the first connecting plate 307 and the second connecting plate 308 to contract, so that the first electrically-driven pinch roller 311 props against the inner wall of a pipeline to be welded, the auxiliary positioning wheel 312 is positioned on the hinging shaft of the telescopic push rod 309 and the fourth connecting rod 310, when the first electrically-driven pinch roller 311 props against the inner wall of the pipeline to be welded, the telescopic push rod 309 is compressed, so as to push the auxiliary positioning wheel 312 to tightly press against the inner wall of the pipeline, the fixing of a moving system on the inner wall of the pipeline can be more stable, the device can not always be centered on the inner wall of the pipeline due to the gravity of the heating system, and the first electrically-driven pinch roller 311 is started, the first electrically driven pinch roller 311 can drive the whole preheating welding device to move in the pipeline.
The universal joint assembly is a universal joint structure with a guide groove, the heating system and the moving system both rely on the universal joint assembly to act as a framework, and the integral universal joint assembly is a universal joint, so that the preheating welding device can operate in bent pipes of less than ninety degrees, and the welding preheating requirement at certain specific angles is met.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A preheating welding device for welding workpieces comprises a second connecting shaft (3) and a heating system; the outer surface of the second connecting shaft (3) is connected with a heating system; the welding gun is characterized by further comprising a first fixed half ring (501), a second fixed half ring (502), a connector (503) and a welding gun joint (504); the heating system is used for heating the inner wall of the pipeline and can simultaneously heat pipelines with different pipe diameters; one end of the first fixed half ring (501) is movably connected with a second fixed half ring (502), and the other end of the first fixed half ring is locked with the second fixed half ring (502) through a connector (503); the first stationary half ring (501) is provided with a welding gun joint (504) for installing welding equipment.
2. A preheat welding device for welding workpieces as recited in claim 1, wherein the second connecting shaft (3) is provided with a second guide groove (3 a) structure on the outer surface.
3. The preheating welding device for the welding workpiece according to claim 1, wherein the heating system comprises a heating hinge assembly and a hinge telescopic assembly, and two hinge telescopic assemblies which are distributed left and right are connected to the outer surface of the second connecting shaft (3); and the two hinge telescopic assemblies are connected with a heating hinge assembly.
4. The preheating welding device for the welding workpiece according to claim 1, wherein the left hinge expansion assembly comprises a first mounting plate (201), a second mounting plate (202), a first motor (203), a first shaft sleeve (204), a first lead screw (205), a first nut (206) and a base (207); a first mounting disc (201) is fixedly connected to the left part of the outer surface of the second connecting shaft (3); a first motor (203) is fixedly connected to the left part of the outer surface of the second connecting shaft (3) and is positioned on the left side of the first mounting disc (201); a first shaft sleeve (204) is fixedly connected to an output shaft of the first motor (203); a first screw rod (205) is fixedly connected to the front part of the first shaft sleeve (204); a first nut (206) is screwed on the first screw rod (205); a second mounting plate (202) is connected to the second guide groove (3 a) in a sliding manner; a plurality of bases (207) are fixedly connected in the groove on the outer surface of the first mounting plate (201); a plurality of bases (207) are fixedly connected in grooves on the outer surface of the second mounting plate (202); a heating hinge assembly is connected to the base (207); the first shaft sleeve (204) penetrates through the first mounting disc (201), and the first shaft sleeve (204) is not in contact with the first mounting disc (201); the second mounting plate (202) is screwed with the first nut (206).
5. The preheat welding device for welding workpieces as set forth in claim 4, wherein the heating hinge assembly comprises a first connecting rod (208), a second connecting rod (209), a third connecting rod (210), a copper block mounting seat (211) and a heating copper block (212); each base (207) is movably connected with a first connecting rod (208); the middle parts of the left first connecting rods (208) are respectively and movably connected with a second connecting rod (209), and the middle parts of the right first connecting rods (208) are respectively and movably connected with a third connecting rod (210); the second connecting rod (209) is movably connected with a third connecting rod (210); two first connecting rods (208) in the same group are jointly and movably connected with a copper block mounting seat (211); each copper block mounting seat (211) is provided with a heating copper block (212).
6. The preheating welding device for the welding workpiece as claimed in claim 5, wherein each copper block mounting seat (211) is fixedly connected with a laser lamp bead (213).
7. The device for preheating welding of workpieces according to claim 4, wherein the two first connecting rods (208) are grouped and arranged in the same hinge telescopic assembly and on the same horizontal line, and are splayed as a whole.
8. The preheating welding device for the welding workpieces as recited in claim 1, further comprising a first connecting shaft (1), a first connecting block (2), a second connecting block (4), a third connecting shaft (5) and a moving system; the outer surface of the first connecting shaft (1) is provided with a first guide groove (1 a); the front part of the first connecting shaft (1) is movably connected with a first connecting block (2); the upper end and the lower end of the first connecting block (2) are movably connected with a second connecting shaft (3); the right part of the second connecting shaft (3) is movably connected with a second connecting block (4); the second connecting block (4) is movably connected with a third connecting shaft (5); the first connecting shaft (1), the first connecting block (2), the second connecting shaft (3), the second connecting block (4) and the third connecting shaft (5) form a universal joint set; the first connecting shaft (1) and the third connecting shaft (5) are respectively connected with a moving system.
9. A preheat welding device for weld workpieces as recited in claim 8, wherein the third connecting shaft (5) is provided with a third guide groove (5 a) on its outer surface.
10. The preheating welding device for the welding workpiece according to claim 8, characterized in that a moving system on the third connecting shaft (5) comprises a third mounting disc (301), a fourth mounting disc (302), a second motor (303), a second shaft sleeve (304), a second lead screw (305), a second nut (306), a first connecting plate (307), a second connecting plate (308), a telescopic push rod (309), a fourth connecting rod (310), a first electrically-driven pinch roller (311) and an auxiliary positioning wheel (312); a third mounting disc (301) is fixedly connected to the left part of the outer surface of the third connecting shaft (5); a fourth mounting plate (302) is connected to the third guide groove (5 a) in a sliding manner; a second motor (303) is fixedly connected to the left side surface of the third mounting plate (301); a second shaft sleeve (304) is fixedly connected with an output shaft of the second motor (303); a second screw rod (305) is fixedly connected to the front part of the second shaft sleeve (304); the second screw rod (305) is screwed with a second nut (306); the second nut (306) is fixedly connected with the fourth mounting plate (302); three first connecting plates (307) are movably connected to the outer surfaces of the third mounting disc (301) and the fourth mounting disc (302) in a circumferential array mode; two first connecting plates (307) on the same connecting line are movably connected with each other; the middle parts of the two first connecting plates (307) on the same connecting line are respectively movably connected with a second connecting plate (308), and the two second connecting plates (308) are mutually movably connected; a first electric driving pinch roller (311) is arranged in the middle of the movable connecting shafts of the two first connecting plates (307) on the same connecting line; the middle part of each first connecting plate (307) is movably connected with a telescopic push rod (309); each telescopic push rod (309) is movably connected with a fourth connecting rod (310), and the fourth connecting rods (310) are rotatably connected with the movable connecting shafts of the first connecting plates (307); an auxiliary positioning wheel (312) is rotatably connected between the two fourth connecting rods (310).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210519241.1A CN114619184B (en) | 2022-05-13 | 2022-05-13 | Preheating welding device for welding workpiece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519241.1A CN114619184B (en) | 2022-05-13 | 2022-05-13 | Preheating welding device for welding workpiece |
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| CN114619184A true CN114619184A (en) | 2022-06-14 |
| CN114619184B CN114619184B (en) | 2022-07-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115194476A (en) * | 2022-08-12 | 2022-10-18 | 南昌航空大学 | Flexible self-adaptive intelligent repair device for large-slenderness-ratio pipeline and using method |
| CN116727853A (en) * | 2023-07-20 | 2023-09-12 | 中钰匠鑫机械制造有限公司 | Intelligent auxiliary equipment for laser composite welding |
| CN117090997A (en) * | 2023-09-01 | 2023-11-21 | 道雨耐节能科技宿迁有限公司 | Pipeline connection correction inspection robot |
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| CN116727853B (en) * | 2023-07-20 | 2024-05-24 | 中钰匠鑫机械制造有限公司 | Intelligent auxiliary equipment for laser composite welding |
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