CN214723820U - Puller convenient for dismounting coupler - Google Patents

Abstract

The utility model discloses a puller convenient for disassembling a coupler, which comprises a puller seat, a plurality of clamping jaws and a rotating seat, wherein each clamping jaw is movably arranged on the puller seat along the radial direction of the puller seat, and the plurality of clamping jaws are arranged at intervals along the circumferential direction of the puller seat; the rotary seat is sleeved on a round shaft of the puller seat and is in driving connection with the clamping jaws, and the rotary seat is rotatably arranged around the axis of the rotary seat so as to drive the clamping jaws to move along the radial direction of the puller seat to be close to or far away from each other; the rotary base is rotated to enable the clamping jaws to simultaneously clamp the coupler, the rotary base is locked through the rotary locking device on the circular shaft, the state that the puller base and the rotary base are relatively fixed is kept, the rotary threaded mandril is abutted against the output shaft of the falling protector test bench to dismount the coupler, and the technical problem that the puller respectively adjusts and fixes the clamping jaws of the puller to clamp the coupler when the coupler of the output shaft of the falling protector test bench is dismounted is solved.

Description

Puller convenient for dismounting coupler

Technical Field

The utility model relates to a mechanical assembly technical field especially relates to a horse draws convenient to dismantle shaft coupling.

Background

When the falling protector testing platform detects the falling protectors of the elevators with different sizes, the coupler which is connected with the output shaft of the falling protector testing platform and the falling protector gear shafts of the elevators needs to be detached, and then the coupler which corresponds to the falling protector gear shafts of the elevators to be tested in size is assembled. When the coupler is disassembled, the coupler is clamped by the puller, clamping jaws for fixing the puller are respectively adjusted to clamp the coupler, and a threaded mandril of the rotary puller pushes against an output shaft of the safety catcher test bench to pull out the coupler, so that the puller is troublesome in operation and low in efficiency in the process of disassembling the coupler of the output shaft of the safety catcher test bench.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a draw horse convenient to dismantle shaft coupling for the solution draws the horse and adjusts the fixed clamping jaw that draws the horse when dismantling safety hook testboard output shaft coupling respectively and presss from both sides tight shaft coupling's technical problem.

In view of this, the embodiment of the utility model provides a draw horse convenient to dismantle shaft coupling includes:

the center of the puller seat is fixedly provided with a circular shaft with a through center, and a threaded mandril penetrates through the circular shaft; the clamping jaws are arranged on the puller seat in a manner that the clamping jaws can move along the radial direction of the puller seat, and the clamping jaws are arranged at intervals along the circumferential direction of the puller seat; the rotary seat is sleeved on the round shaft and is in driving connection with the clamping jaws, the rotary seat rotates around the axis of the rotary seat, and the rotary seat drives the clamping jaws to move along the radial direction of the puller seat simultaneously so as to enable the clamping jaws to approach or depart from each other; and a rotary locking device is arranged on the round shaft and used for locking the rotary seat.

Furthermore, a plurality of guide grooves are formed in the puller seat, and one end of each of the plurality of guide grooves extends in the circumferential direction of the puller seat along the radial direction of the puller seat by taking the circle center of the puller seat as a base point; each clamping jaw is correspondingly and slidably arranged in each guide groove.

Furthermore, the rotating seat is provided with a plurality of sliding grooves, the plurality of sliding grooves are arranged at intervals along the circumferential direction of the rotating seat, each sliding groove is provided with a first end and a second end, and the sliding grooves are gradually close to the central point of the rotating seat along the direction from the first end to the second end; one end of the clamping jaw is embedded into the sliding groove to slide in the sliding groove.

Further, the sliding groove is a circular arc sliding groove.

Further, the clamping jaw is provided with a clamping end, and the clamping end is L-shaped.

Further, the round shaft is provided with an external thread, the rotary locking device is a butterfly nut, and the butterfly nut is arranged on the round shaft through the external thread.

Furthermore, a first nut gasket is arranged at the bottom of the butterfly nut, and a second nut gasket is sleeved on the round shaft between the puller seat and the rotating seat.

Further, a first hand wheel is arranged at the top of the threaded ejector rod.

Further, a disc is arranged at the bottom of the threaded ejector rod, and a plurality of balls arranged along the radial direction of the disc are arranged on the disc.

Further, the rotating base is provided with a second hand wheel.

According to the technical scheme, the embodiment of the application has the following advantages:

each clamping jaw is movably arranged on the puller seat along the radial direction of the puller seat, and the plurality of clamping jaws are arranged at intervals along the circumferential direction of the puller seat; the rotating seat is in driving connection with each clamping jaw and can be rotatably arranged around the axis of the rotating seat so as to drive each clamping jaw to move along the radial direction of the puller seat simultaneously to approach or depart from each other; the rotary base is rotated to enable the clamping jaws to simultaneously clamp the coupler, the rotary base is locked through the rotary locking device on the circular shaft, the state that the puller base and the rotary base are relatively fixed is kept, the rotary threaded mandril is abutted against the output shaft of the falling protector test bench to dismount the coupler, and the technical problem that the puller respectively adjusts and fixes the clamping jaws of the puller to clamp the coupler when the coupler of the output shaft of the falling protector test bench is dismounted is solved.

Drawings

Fig. 1 is a general schematic view of a puller for facilitating disassembly of a coupling provided in an embodiment of the present application;

fig. 2 is a top view of a puller seat of a puller for facilitating disassembly of a coupling provided in an embodiment of the present application;

fig. 3 is a top view of a swivel of a puller for facilitating disassembly of a coupling provided in an embodiment of the present application;

FIG. 4 is a vertical cross-sectional view taken at A of the embodiment of FIG. 2;

fig. 5 is a top view of a cover plate of a puller for facilitating disassembly of a coupling provided in an embodiment of the present application.

Wherein the reference numerals are:

10. a rotating base; 11. a chute; 12. a second hand wheel; 20. a puller seat; 21. a guide groove; 22. a circular shaft; 30. a threaded ejector rod; 40. a clamping jaw; 41. a clamping end; 50. a first hand wheel; 60. rotating the locking device; 70. a disc; 80. a cover plate; 81. a transition groove.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

For easy understanding, please refer to fig. 1 to 3, an embodiment of the present application provides a puller for conveniently detaching a coupling, including: the screw thread puller comprises a puller seat 20, wherein a round shaft 22 with a through center is fixedly arranged in the middle of the puller seat 20, and a screw thread mandril 30 penetrates through the round shaft 22; a plurality of clamping jaws 40, wherein the clamping jaws 40 are arranged on the puller seat 20, the clamping jaws 40 can move in the radial direction of the puller seat 20, and the clamping jaws 40 are arranged at intervals in the circumferential direction of the puller seat 20; the rotary base 10 is sleeved on the round shaft 22, the rotary base 10 is in driving connection with the clamping jaws 40, and when the rotary base 10 rotates around the axis of the rotary base, the plurality of clamping jaws 40 can be driven to simultaneously move along the radial direction of the puller base 20, so that the clamping jaws 40 can approach to or depart from each other; the round shaft 22 is provided with a rotation locking device 60, and the rotation locking device 60 is used for locking the rotary base 10.

It should be noted that each clamping jaw 40 is movably mounted on the puller seat 20 along the radial direction of the puller seat 20, and a plurality of clamping jaws 40 are arranged at intervals along the circumferential direction of the puller seat 20; the rotary base 10 is in driving connection with each clamping jaw 40, and the rotary base 10 is rotatably arranged around the axis thereof to drive each clamping jaw 40 and move along the radial direction of the puller base 20 to approach or move away from each other; the rotating base 10 is rotated to enable the clamping jaws 40 to simultaneously clamp the coupler, the rotating base 10 is locked through the rotating locking device 60 on the round shaft 22, and the state that the puller base 20 and the rotating base 10 are relatively fixed is kept, so that the clamping jaws 40 are in the state of clamping the coupler, the rotating threaded mandril 30 is pushed against the output shaft of the falling protector test bench to dismount the coupler, and the technical problem that the puller respectively adjusts and fixes the clamping jaws 40 of the puller to clamp the coupler when the coupler of the output shaft of the falling protector test bench is dismounted is solved.

In specific implementation, as shown in fig. 2, the puller seat 20 is provided with a plurality of guide grooves 21, one end of each of the plurality of guide grooves 21 extends in the circumferential direction of the puller seat 20 along the radial direction of the puller seat 20 with the center of the puller seat 20 as a base point; as shown in fig. 4, both side walls of each guide groove 21 are provided with a step structure, and each holding jaw 40 is provided with a corresponding step structure so as to be correspondingly slidably disposed in each guide groove 21. Each jaw 40 has a first position on its path sliding in the guide slot 21 towards the centre of the puller seat 20, each jaw 40 being moved towards each other in the first position to grip the coupling. Each jaw 40 has a second position on the path of sliding movement in the guide slot 21 away from the centre of the puller base 20, each jaw 40 moving away from each other in the second position to release the coupling.

Further, as shown in fig. 3, the rotating base 10 is provided with a plurality of sliding grooves 11, each sliding groove 11 is arranged at intervals along the circumferential direction of the rotating base 10, each sliding groove 11 has a first end and a second end, and the sliding grooves 11 are gradually close to the center point of the rotating base 10 along the direction from the first end to the second end; one end of the clamping jaw 40 is embedded into the sliding groove 11 to slide in the sliding groove 11, and the clamping jaw 40 is driven to move between a first position and a second position through the sliding groove 11 when the rotary seat 10 rotates; when one end of the clamping jaw 40 slides to the first end of the sliding chute 11, the clamping jaw 40 moves to the second position; when one end of jaw 40 slides to the second end of runner 11, jaw 40 moves to the first position. That is, when each clamping jaw 40 slides to the first end of the sliding chute 11, each clamping jaw 40 is away from the central position of the rotary base 10 so as to be in an open state; when each clamping jaw 40 slides to the second end of the sliding chute 11, each clamping jaw 40 is close to the central position of the rotating base 10 and is in a closed state. Preferably, as shown in fig. 3, the slide groove 11 is a circular arc-shaped slide groove in which the holding jaw 40 slides more smoothly.

As shown in fig. 1 and 5, the puller further includes a cover plate 80, the cover plate 80 is disposed between the puller seat 20 and the rotating seat 10, the cover plate 80 is fixedly connected to the puller seat 20, transition grooves 81 are disposed on the cover plate 80, the transition grooves 81 all extend along the radial direction of the cover plate 80, the transition grooves 81 are multiple, and the multiple transition grooves 81 are disposed at intervals along the circumferential direction of the cover plate 80 and correspond to the guide grooves 21 on the puller seat 20 one to one. The cooperation of the cover plate 80 with the puller seat 20 limits the play of the gripping jaws 40 in the vertical direction when the coupler is disassembled using the puller.

In one embodiment, as shown in fig. 1, the clamping jaws 40 are provided with clamping ends 41, the clamping ends 41 are L-shaped, when the rotating base 10 is rotated to enable each clamping jaw 40 to slide to the second end of the sliding chute 11, and when the clamping jaws 40 move to the first position to clamp the coupling, the L-shaped clamping ends 41 hook the back surface of the coupling, and the rotating threaded mandril 30 abuts against the output shaft of the safety catcher test bench to dismount the coupling.

Further, the circular shaft 22 is provided with an external thread, and the rotation locking device 60 is a wing nut, and the wing nut is disposed on the circular shaft 22 through the external thread. After the clamping jaws 40 slide to the first position to clamp the coupler, the butterfly nuts are tightened to lock the rotary base 10 and the puller base 20, and the puller base 20 and the rotary base 10 are kept in a relatively fixed state, so that the clamping jaws 40 are in a state of clamping the coupler. The bottom of the butterfly nut is provided with a first nut washer, and a second nut disc is sleeved on a round shaft 22 between the puller seat 20 and the rotating seat 10. The butterfly nut is screwed, the relative distance between the puller seat 20 and the rotating seat 10 is reduced, and the first nut gasket arranged at the bottom of the butterfly nut increases the friction force between the butterfly nut and the rotating seat 10; the second nut washer disposed between the puller seat 20 and the rotary seat 10 increases the friction force between the puller seat 20 and the rotary seat 10, and the circular shaft 22 is fixedly disposed on the puller seat 20, so that the butterfly nut is locked to prevent the relative rotation between the puller seat 20 and the rotary seat 10. When the coupler is disassembled by using the puller, the clamping jaws 40 cannot slide along the puller seat 20 in the radial direction.

In one embodiment, as shown in fig. 1, a first hand wheel 50 is arranged at the top of the threaded mandril 30, each clamping jaw 40 clamps the coupler, the threaded mandril 30 is continuously rotated more conveniently through the first hand wheel 50, and the threaded mandril 30 is rotated to prop against the output shaft of the safety catcher test bench to detach the coupler. The threaded mandril 30 is provided with a disk 70 at the bottom, and the disk 70 is provided with a plurality of balls arranged along the radial direction of the disk 70. The disc 70 at the bottom of the threaded ejector rod 30 is abutted against the output shaft of the safety catcher test bench, and when the threaded ejector rod 30 is rotated, the friction force between the threaded ejector rod 30 and the output shaft of the safety catcher test bench is reduced by the balls. The rotary base 10 is provided with a second hand wheel 12, so that the rotary base 10 can be conveniently rotated to drive each clamping jaw 40 to clamp the coupler.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. A puller convenient for disassembling a coupler is characterized by comprising:

the center of the puller seat is fixedly provided with a circular shaft with a through center, and a threaded mandril penetrates through the circular shaft;

the clamping jaws are arranged on the puller seat in a manner that the clamping jaws can move along the radial direction of the puller seat, and the clamping jaws are arranged at intervals along the circumferential direction of the puller seat;

the rotating seat is sleeved on the round shaft and is in driving connection with the clamping jaws, the rotating seat rotates around the axis of the rotating seat, and the rotating seat drives the clamping jaws to move along the radial direction of the puller seat simultaneously so as to enable the clamping jaws to approach or depart from each other;

and a rotary locking device is arranged on the round shaft and used for locking the rotary seat.

2. The puller convenient for disassembling the coupling according to claim 1, wherein the puller seat is provided with a plurality of guide grooves, and one end of each of the plurality of guide grooves extends in the circumferential direction of the puller seat along the radial direction of the puller seat by taking the center of the puller seat as a base point; each clamping jaw is correspondingly and slidably arranged in each guide groove.

3. The puller convenient for disassembling the coupling according to claim 1, characterized in that the rotary seat is provided with a plurality of sliding grooves, the plurality of sliding grooves are arranged at intervals along the circumferential direction of the rotary seat, the sliding grooves are provided with a first end and a second end, and the sliding grooves are gradually close to the central point of the rotary seat along the direction from the first end to the second end; one end of the clamping jaw is embedded into the sliding groove to slide in the sliding groove.

4. The puller for facilitating disassembly of a coupling according to claim 3, wherein the sliding groove is a circular arc sliding groove.

5. The puller for facilitating disassembly of a coupling according to claim 1, wherein said jaws are provided with a gripping end, said gripping end being L-shaped.

6. The puller for facilitating disassembly of a coupling as claimed in claim 1, wherein said round shaft is provided with an external thread, and said rotational locking device is a wing nut, said wing nut being disposed on said round shaft through said external thread.

7. The puller for facilitating disassembly of a coupling as claimed in claim 6, wherein a first nut washer is provided at the bottom of the wing nut, and a second nut washer is sleeved on the round shaft between the puller seat and the rotary seat.

8. The puller convenient for disassembling the coupler as recited in claim 1, wherein a first hand wheel is disposed on a top of said threaded carrier rod.

9. The puller for facilitating disassembly of a coupling according to claim 8, wherein said threaded carrier rod is provided at a bottom thereof with a disc provided with a plurality of balls radially disposed along said disc.

10. The puller for facilitating disassembly of a coupling according to claim 1, wherein said rotating base is provided with a second hand wheel.

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