CN214977514U - Automatic pre-stretching machine - Google Patents
Automatic pre-stretching machine Download PDFInfo
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- CN214977514U CN214977514U CN202120712522.XU CN202120712522U CN214977514U CN 214977514 U CN214977514 U CN 214977514U CN 202120712522 U CN202120712522 U CN 202120712522U CN 214977514 U CN214977514 U CN 214977514U
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Abstract
The utility model mainly discloses an automatic pre-drawing machine, its technical scheme: the automatic opening and closing safety cover assembly is mounted in the middle of the upper side of the main machine body, the force measuring mechanism is mounted at the rear part of the upper side of the main machine body, the chain is mounted between the force increasing mechanism and the force measuring mechanism, and the force increasing mechanism drives the chain to stretch. All spare parts of whole adoption host computer lathe bed all weld and form, welded the strengthening rib simultaneously, guaranteed equipment bulk strength, can bear the intensity problem of prestretching. The force increasing mechanism can realize 3 times of pretension force without passing through a lever by the lever principle, and solves the strength problem of large-specification pretension equipment; the force measuring mechanism is matched with the force increasing mechanism and used for testing the pretensioning force of the chain.
Description
Technical Field
The utility model relates to a prestretch technical field, especially an automatic pretension machine.
Background
The existing chain pre-tensioning mode has high labor intensity and low efficiency, and cannot meet the requirements of the existing market, and the later patent application No. 201720829570.0 discloses an automatic pre-tensioning machine for an attached plate chain, which saves labor and improves efficiency, but the scheme cannot realize pre-tensioning of large-specification chains and cannot realize (change specification) automatic pre-tensioning function. Due to the change of the pre-tensioning process, the pre-tensioning force is changed from the original 30% to 50% -60% Q, the standard continuous large-specification 40A multi-row and above-specification chains cannot be pre-tensioned on original equipment, meanwhile, other specifications of chains require that the original equipment is close to a load to operate, faults are easy to occur, the original 10-ton pre-tensioning machine cannot meet normal use requirements, so that various specifications of chains in a workshop cannot be pre-tensioned, and the 80-ton pre-tensioning machine mainly solves the problems and meets normal production of a use department.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides an automatic pre-drawing machine improves work efficiency, product quality, and the installation flexibility is great, make mechanical more humanized, has alleviateed operator's burden.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the automatic pre-drawing machine comprises a main machine body, a force increasing mechanism, a safety cover assembly and a force measuring mechanism, wherein the force increasing mechanism is installed at the front end of the upper side of the main machine body, the automatic opening and closing safety cover assembly is installed in the middle of the upper side of the main machine body, the force measuring mechanism is installed at the rear part of the upper side of the main machine body, a chain is installed between the force increasing mechanism and the force measuring mechanism, and the force increasing mechanism drives the chain to stretch.
Preferably: the main machine body comprises a main machine frame and foot seats, working table end plates are arranged on two sides of the main machine frame, at least two foot seats are arranged on the lower side of the main machine frame, the main machine body and foot rests are welded, the main machine frame is made of 40C channel steel, and the whole support is stable.
Preferably: a plurality of vertical reinforcing ribs and inclined reinforcing ribs are arranged between the main frame, and the inclined reinforcing ribs are arranged on two sides of the vertical reinforcing ribs. The problem of the pre-tensioning strength of the large-size chain is considered, the reinforcing ribs are welded, and the integral strength of the equipment is ensured.
Preferably: the force-increasing mechanism comprises a pair of force-increasing rod fixing plates, force-increasing rods, a first connecting joint, a pair of first bearing flanges, a pair of second bearing flanges, a push rod connecting pin shaft and a double-lug annular thrust oil cylinder, the outer sides of the force increasing rod fixing plates are respectively and correspondingly provided with a first bearing flange, a first pin shaft is arranged between the first bearing flanges, one end of each force increasing rod is arranged on the first pin shaft, a fixing plate auxiliary plate is arranged on the first pin shaft and positioned on the outer sides of the force increasing rods, a spacer bush A is arranged on the first pin shaft and positioned between the inner sides of the force increasing rods, the boosting rod is limited through the spacer bush A, the other end of the boosting rod is connected with one end of the double-lug annular thrust oil cylinder through a push rod connecting pin shaft, the other end of the double-lug annular thrust oil cylinder is installed between the second bearing flanges through an oil cylinder pin shaft, the second bearing flanges are installed on the main frame, a second pin shaft is further arranged between the pair of boosting rods, and a first connecting joint is installed on the second pin shaft. The double-lug annular thrust oil cylinder stretches to drive the force-increasing rod to move so as to drive the first connecting head to stretch, the double-lug annular thrust oil cylinder is controlled by the PLC, automatic pressure regulation can be realized, a required pressure value can be accurately regulated, and the PC end can be arranged on the prestretching record to record.
Preferably: spacer bushes B are arranged on two sides of one end, located at the double-lug annular thrust oil cylinder, of the push rod connecting pin shaft, and spacer bushes C are arranged on two sides, located at the other end of the double-lug annular thrust oil cylinder, of the oil cylinder pin shaft. The spacer C ensures that the double-lug annular thrust oil cylinder does not move during working, and the spacer B ensures that the 2 force increasing rods and one position degree of the piston rod of the double-lug annular thrust oil cylinder.
Preferably: the safety cover subassembly includes cylinder fixed plate, cylinder, Y type annex, adapter and safety top facing board, the cylinder fixed plate is installed in the main frame downside, and safety top facing board bottom passes through the adapter switching in the main frame upside, and articulated cylinder on the cylinder fixed plate, cylinder head pass through adapter and safety top facing board side switching, and it rotates to drive safety top facing board through the cylinder is flexible, and the cylinder adopts PLC control, adopts the automatic mode of opening self-closing, and furthest's assurance is prestretched the safety of during operation.
Preferably: the force measuring mechanism comprises a tailstock fixing plate, a dynamometer supporting seat, a stress screw A, a stress screw B, a second connector and a handle, wherein the tailstock fixing plate is installed on a main frame, the two sides of the tailstock fixing plate are fixedly connected with the tailstock supporting plate, the dynamometer supporting seat is connected with the side face of the tailstock supporting plate, the stress screw A and the stress screw B are respectively installed on the left side and the right side of the force measuring sensor, the stress screw A penetrates through the dynamometer supporting seat and the tailstock fixing plate, the stress screw A is fixed on the tailstock fixing plate through a locking nut and a stress nut, one end of the stress screw B is fixed on the force measuring sensor, the other end of the stress screw B is connected with the second connector, the first connector and the second connector are respectively connected with a pre-tensioning connector, and the chain is installed through the pre-tensioning connectors at the two ends.
The utility model discloses it does to have beneficial effect:
all spare parts of whole adoption host computer lathe bed all weld and form, welded the strengthening rib simultaneously, guaranteed equipment bulk strength, can bear the intensity problem of prestretching.
The force increasing mechanism can realize 3 times of pretension force without passing through a lever by the lever principle, and solves the strength problem of large-specification pretension equipment;
the force measuring mechanism is matched with the force increasing mechanism and used for testing the pretensioning force of the chain.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of another angle structure of the present invention;
FIG. 3 is an enlarged view of FIG. 1 at A;
fig. 4 is a schematic structural view of the middle force increasing mechanism of the present invention.
Reference numerals: 1. a main machine body; 11. a main frame; 12. a foot seat; 13. a workbench end plate; 14. a vertical reinforcing rib; 15. oblique reinforcing ribs; 2. a force increasing mechanism; 21. a force-increasing rod fixing plate; 22. a force increasing rod; 23. a first connector; 24. a first bearing flange; 25. a second bearing flange; 26. the push rod is connected with the pin shaft; 27. a double-lug ring type thrust oil cylinder; 28. a fixed plate attachment plate; 291. a spacer bush A; 292. a spacer bush B; 293. a spacer C; 3. a safety shield assembly; 31. a cylinder fixing plate; 32. a cylinder; 33. a Y-shaped attachment; 34. a transfer seat; 35. a safety cover panel; 4. a force measuring mechanism; 41. a tailstock fixing plate; 42. a dynamometer support seat; 43. a stress screw A; 44. a force sensor; 45. a tailstock supporting plate; 46. a handle.
Detailed Description
The preferred embodiments of the present invention will be further described in detail with reference to the accompanying drawings.
The automatic pre-tensioning machine comprises a main machine body 1, a force increasing mechanism 2, a safety cover assembly 3 and a force measuring mechanism 4, wherein the force increasing mechanism 2 is installed at the front end of the upper side of the main machine body 1, the automatic opening and closing safety cover assembly 3 is installed in the middle of the upper side of the main machine body 1, the force measuring mechanism 4 is installed at the rear part of the upper side of the main machine body 1, a chain is installed between the force increasing mechanism 2 and the force measuring mechanism 4, and the force increasing mechanism 2 drives the chain to stretch.
The main machine tool body 1 comprises a main machine frame 11 and foot seats 12, end plates 13 of a workbench are arranged on two sides of the main machine frame 11, at least two foot seats 12 are arranged on the lower side of the main machine frame 11, the main machine tool body 1 and foot stands are welded, the main machine frame 11 is made of 40C channel steel, and the whole support is stable. A plurality of vertical reinforcing ribs 14 and inclined reinforcing ribs 15 are arranged between the main frame 11, and the inclined reinforcing ribs 15 are arranged on two sides of the vertical reinforcing ribs 14. The problem of the pre-tensioning strength of the large-size chain is considered, the reinforcing ribs are welded, and the integral strength of the equipment is ensured.
The force increasing mechanism 2 comprises a pair of force increasing rod fixing plates 21, force increasing rods 22, a first connecting joint 23, a pair of first bearing flanges 24, a pair of second bearing flanges 25, a push rod connecting pin shaft 26 and a double-lug annular thrust oil cylinder 27, wherein the outer sides of the force increasing rod fixing plates 21 are respectively and correspondingly provided with the first bearing flanges 24, a first pin shaft is arranged between the first bearing flanges 24, one ends of the pair of force increasing rods 22 are arranged on the first pin shaft, the first pin shaft is positioned on the outer sides of the pair of force increasing rods 22 and is provided with a fixing plate attachment plate 28, a spacer A291 is arranged on the first pin shaft and is positioned between the inner sides of the pair of force increasing rods 22, the force increasing rods 22 are limited through the spacer A291, the other ends of the force increasing rods 22 are connected with one ends of the double-lug annular thrust oil cylinders 27 through the push rod connecting pin shaft 26, the other ends of the double-lug annular thrust oil cylinders 27 are arranged between the second bearing flanges 25 through the oil cylinder pin shafts, the second bearing flanges 25 are arranged on the main frame 11, a second pin shaft is arranged between the pair of force increasing rods 22, and a first connecting head is arranged on the second pin shaft. The double-lug annular thrust oil cylinder 27 stretches to drive the force increasing rod 22 to move, so that the first connecting head is driven to stretch, the double-lug annular thrust oil cylinder 27 is controlled by a PLC (programmable logic controller), automatic pressure regulation can be achieved, a required pressure value can be accurately regulated, and the pc end on the upper side of the double-lug annular thrust oil cylinder can be pre-stretched and recorded.
Spacer bushes B292 are arranged on two sides of one end, located at the double-lug annular thrust oil cylinder 27, of the push rod connecting pin shaft 26, and spacer bushes C293 are arranged on two sides, located at the other end of the double-lug annular thrust oil cylinder 27, of the oil cylinder pin shaft. The spacer C293 ensures that the double-lug annular thrust cylinder 27 does not move during working, and the spacer B292 ensures one position degree of the 2 force-increasing rods 22 and the piston rod of the double-lug annular thrust cylinder 27.
The force measuring mechanism 4 comprises a tailstock fixing plate 41, a force measuring gauge supporting seat 42, a force measuring sensor 44, a stress screw A43, a stress screw B, a second connector and a handle 46, the tailstock fixing plate 41 is arranged on the main frame 11, the tailstock supporting plate 45 is fixedly connected with two sides of the tailstock fixing plate 41, the dynamometer supporting seat 42 is connected with the side surface of the tailstock supporting plate 45, the stress screw A43 and the stress screw B are respectively arranged on the left side and the right side of the force sensor 44, the stress screw A43 penetrates through the dynamometer supporting seat 42 and the tailstock fixing plate 41, the stress screw A43 is fixed on the tailstock fixing plate 41 through a locking nut and a stress nut, one end of the stress screw B is fixed on the force cell 44, the other end is connected with a second connector, the second connector has the same structure as the first connector, not shown in the figure, the stressed screw rod mainly plays a role of supporting and fixing, and the handle 46 is used for locking the rightmost locking nut; the first connector and the second connector are respectively connected with a pre-tensioning connector, and the chain is installed through the pre-tensioning connectors at the two ends.
In actual operation, one end of the chain is connected with the pre-tensioning joint on the first connecting head 23, the other end of the chain is connected with the pre-tensioning joint on the second connecting head, after the error is confirmed, the safety cover panel 35 is closed through the air cylinder 32, then the double-lug annular thrust oil cylinder 27 is started to drive the force increasing rod 22 to rotate, so that the first connecting head 23 is driven to be stretched, the force measuring sensor 44 detects the situation, when the pulling force is loaded to the pre-tensioning set value, pressure maintaining is started, after the pressure maintaining time is up, pressure is relieved, and finally the safety cover panel 35 is opened, and the pre-tensioning is completed. By adopting the force increasing mechanism 2 and a lever principle, the pretensioning force which is 3 times that of the lever can be realized, and the problem of strength of large-specification pretensioning equipment is solved; the force measuring mechanism 4 is matched with the force increasing mechanism 2 and used for testing the pretensioning force of the chain, so that the pretensioning problem of large-specification products can be solved.
The above embodiments are only used for explaining the inventive concept of the present invention, and not for limiting the protection of the claims of the present invention, and all the insubstantial modifications of the present invention made by using the above inventive concept shall fall within the protection scope of the present invention.
Claims (7)
1. An automatic pre-drawing machine is characterized in that: the automatic opening and closing safety cover assembly is mounted in the middle of the upper side of the main machine body, the force measuring mechanism is mounted at the rear part of the upper side of the main machine body, the chain is mounted between the force increasing mechanism and the force measuring mechanism, and the force increasing mechanism drives the chain to stretch.
2. An automatic pre-drawing machine according to claim 1, characterized in that: the main machine body comprises a main machine frame and footstands, the end plates of the workbench are arranged on two sides of the main machine frame, and at least two footstands are arranged on the lower side of the main machine frame.
3. An automatic pre-drawing machine according to claim 2, characterized in that: a plurality of vertical reinforcing ribs and inclined reinforcing ribs are arranged between the main frame, and the inclined reinforcing ribs are arranged on two sides of the vertical reinforcing ribs.
4. An automatic pre-drawing machine according to claim 1, characterized in that: the force-increasing mechanism comprises a pair of force-increasing rod fixing plates, force-increasing rods, a first connecting joint, a pair of first bearing flanges, a pair of second bearing flanges, a push rod connecting pin shaft and a double-lug annular thrust oil cylinder, the outer sides of the force increasing rod fixing plates are respectively and correspondingly provided with a first bearing flange, a first pin shaft is arranged between the first bearing flanges, one end of each force increasing rod is arranged on the first pin shaft, a fixing plate auxiliary plate is arranged on the first pin shaft and positioned on the outer sides of the force increasing rods, a spacer bush A is arranged on the first pin shaft and positioned between the inner sides of the force increasing rods, the boosting rod is limited through the spacer bush A, the other end of the boosting rod is connected with one end of the double-lug annular thrust oil cylinder through a push rod connecting pin shaft, the other end of the double-lug annular thrust oil cylinder is installed between the second bearing flanges through an oil cylinder pin shaft, the second bearing flanges are installed on the main frame, a second pin shaft is further arranged between the pair of boosting rods, and a first connecting joint is installed on the second pin shaft.
5. An automatic pre-drawing machine according to claim 4, characterized in that: spacer bushes B are arranged on two sides of one end, located at the double-lug annular thrust oil cylinder, of the push rod connecting pin shaft, and spacer bushes C are arranged on two sides, located at the other end of the double-lug annular thrust oil cylinder, of the oil cylinder pin shaft.
6. An automatic pre-drawing machine according to claim 1, characterized in that: the safety cover subassembly includes cylinder fixed plate, cylinder, Y type annex, adapter and safety cover panel, the cylinder fixed plate is installed in the main frame downside, and safety cover panel bottom passes through the adapter switching in the main frame upside, and articulated cylinder on the cylinder fixed plate, cylinder head pass through adapter and safety cover panel side switching, and it rotates to drive safety cover panel through the cylinder is flexible.
7. An automatic pre-drawing machine according to claim 1, characterized in that: the force measuring mechanism comprises a tailstock fixing plate, a dynamometer supporting seat, a force measuring sensor, a stress screw A, a stress screw B, a second connector and a handle, wherein the tailstock fixing plate is installed on the main frame, tailstock fixing plate two sides are fixedly connected with a tailstock supporting plate, the dynamometer supporting seat is connected with the side face of the tailstock supporting plate, the stress screw A and the stress screw B are respectively installed on the left side and the right side of the force measuring sensor, the stress screw A penetrates through the dynamometer supporting seat and the tailstock fixing plate, the stress screw A is fixed on the tailstock fixing plate through a locking nut and a stress nut, one end of the stress screw B is fixed on the force measuring sensor, and the other end of the stress screw B is connected with the second connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120712522.XU CN214977514U (en) | 2021-04-08 | 2021-04-08 | Automatic pre-stretching machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120712522.XU CN214977514U (en) | 2021-04-08 | 2021-04-08 | Automatic pre-stretching machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214977514U true CN214977514U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120712522.XU Active CN214977514U (en) | 2021-04-08 | 2021-04-08 | Automatic pre-stretching machine |
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| Country | Link |
|---|---|
| CN (1) | CN214977514U (en) |
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2021
- 2021-04-08 CN CN202120712522.XU patent/CN214977514U/en active Active
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