Puller

Abstract

The utility model belongs to the technical field of dismounting tools, and discloses a puller, which comprises a bearing seat, a screw rod, a tension claw and a connecting piece, a threaded hole and a plurality of first mounting hole groups are arranged on the bearing seat, and the plurality of first mounting hole groups are arranged around the threaded hole. Any first mounting group comprises a plurality of first mounting holes which are formed at intervals in the radial direction of the threaded hole; the screw penetrates through the threaded hole and is in threaded connection with the bearing seat; the tension claws are in one-to-one correspondence with the first mounting hole groups, and a plurality of second mounting holes are formed in the tension claws at intervals in the length direction of the tension claws; the first end of the connecting piece is detachably and rotatably connected with the bearing seat through a first connecting shaft penetrating through the first mounting hole, and the second end of the connecting piece is detachably and rotatably connected with the tension claw through a second connecting shaft penetrating through the second mounting hole. According to the puller, the distance between the pulling claws and the effective length of the pulling claws can be adjusted, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly tools, in particular to a puller. Background Art

[0002] A puller is a disassembly tool for separating a bearing from a shaft. When in use, a pulling claw is used to hook the bearing, and then a jack rod with a screw thread is rotated, and the bearing can be slowly pulled out of the shaft. However, due to the limitations of the length, spacing of the pulling claws and the length of the screw rod of different pullers, the applicable sizes of bearings are limited, and it is often necessary to replace different-sized pullers to meet the disassembly requirements of different-sized bearings, and it is inconvenient to carry multiple pullers. Content of the Utility Model

[0003] The purpose of the utility model is to provide a puller to solve the problem of narrow applicable range of the puller.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A puller, the puller includes a load-bearing seat, a screw rod, pulling claws and a connecting piece. A threaded hole and a first mounting hole group are formed in the load-bearing seat. Multiple groups of the first mounting hole groups are arranged around the threaded hole, and any one group of the first mounting groups includes a plurality of first mounting holes that are radially spaced along the threaded hole; the screw rod passes through the threaded hole and is threadedly connected to the load-bearing seat; the pulling claws correspond to the first mounting hole groups one by one, and a plurality of second mounting holes are arranged at intervals along the length direction of the pulling claws; a first end of the connecting piece is detachably and rotatably connected to the load-bearing seat through a first connecting shaft passing through the first mounting hole, and a second end of the connecting piece is detachably and rotatably connected to the pulling claw through a second connecting shaft passing through the second mounting hole.

[0006] In one embodiment, the load-bearing seat includes a load-bearing beam, the load-bearing beam includes a main body portion and a mounting portion, the threaded hole is formed in the main body portion, a plurality of the mounting portions are arranged around the main body portion and extend along the radial direction of the threaded hole, and the first mounting hole is formed in the mounting portion.

[0007] In one embodiment, the load-bearing beam has a cross-shaped structure, and four pulling claws are provided.

[0008] In one embodiment, the load-bearing seat includes a load-bearing ring, the load-bearing ring is coaxially arranged with the main body portion, and the load-bearing ring connects a plurality of the mounting portions.

[0009] In one embodiment, the puller further includes a force-applying handle, and the force-applying handle is fixed to one end of the screw rod away from the claw head of the pulling claw.

[0010] In one embodiment, the force - applying handle includes a connecting portion and a holding portion. One end of the connecting portion is connected to the screw rod, and the other end of the connecting portion is connected to the holding portion. The holding portion is parallel to the screw rod.

[0011] In one embodiment, the puller further includes a light - source module, which is installed on the connecting portion and is arranged facing the load - bearing seat.

[0012] In one embodiment, the light - source module is embedded in the connecting portion.

[0013] In one embodiment, the puller further includes a tension sensor and a display screen. The tension sensor is arranged at one end of the screw rod close to the claw head of the tension claw, and the display screen is electrically connected to the tension sensor.

[0014] In one embodiment, the tension sensor adopts an S - type tension sensor.

[0015] Advantages of the present utility model: In the puller of the present utility model, a plurality of first mounting holes and second mounting holes are respectively arranged on the load - bearing seat and the tension claw. By adjusting the position of the first mounting hole where the connecting piece is located, the distance between the tension claws can be adjusted, so as to meet the disassembly requirements of bearings with different diameters; and by adjusting the position of the second mounting hole where the connecting piece is located, the effective length of the pulling claw acting on the bearing can be adjusted, so as to meet the disassembly requirements of bearings with different lengths. Description of the Drawings

[0016] Figure 1 is the front view of the puller in the embodiment of the present utility model;

[0017] Figure 2 is the top view of the puller in the embodiment of the present utility model;

[0018] Figure 3 is the connection relationship diagram of the connecting piece, the load - bearing seat and the tension claw in the embodiment of the present utility model;

[0019] Figure 4 is the structural schematic diagram of the tension sensor in the embodiment of the present utility model;

[0020] Figure 5 is the top view of the load - bearing beam in the embodiment of the present utility model.

[0021] In the figure:

[0022] 1. Load-bearing seat; 11. Load-bearing beam; 111. Main body part; 112. Installation part; 113. Threaded hole; 114. First installation hole; 12. Load-bearing ring; 2. Tensile claw; 21. Second installation hole; 3. Connecting piece; 31. First connecting shaft; 32. Second connecting shaft; 4. Screw; 5. Force-applying handle; 51. Connecting part; 52. Holding part; 521. First groove; 522. Second groove; 6. Tensile sensor; 7. Display screen; 8. Light source module. Detailed implementation mode

[0023] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the sake of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0024] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0026] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0027] Refer to Figures 1 - 5As shown in the figure, in the embodiment of the present utility model, a puller is proposed, which includes a load-bearing seat 1, a tension claw 2, a screw 4 and a connecting piece 3. Among them, a threaded hole 113 and a first mounting hole group are provided on the load-bearing seat 1. Multiple groups of first mounting hole groups are arranged around the threaded hole 113, and any group of the first mounting groups includes a plurality of first mounting holes 114 arranged at intervals in the radial direction of the threaded hole 113. The screw 4 passes through the threaded hole 113 and is threadedly connected to the load-bearing seat 1. The tension claws 2 correspond to the first mounting hole groups one by one. A plurality of second mounting holes 21 are arranged at intervals along the length direction of the tension claw 2. The first end of the connecting piece 3 is rotatably connected to the load-bearing seat 1 through a first connecting shaft passing through the first mounting hole 114. The connecting piece 3 is detachably connected to the load-bearing seat 1. The second end of the connecting piece 3 is rotatably connected to the tension claw 2 through a second connecting shaft passing through the second mounting hole 21. The connecting piece 3 is detachably connected to the tension claw 2.

[0028] In the above puller, a plurality of first mounting holes 114 and second mounting holes 21 are respectively provided on the load-bearing seat 1 and the tension claw 2. By adjusting the position of the first mounting hole 114 where the connecting piece 3 is located, the distance between the tension claws 2 can be adjusted, so as to meet the disassembly requirements of bearings with different diameters. By adjusting the position of the second mounting hole 21 where the connecting piece 3 is located, the effective length of the pull claw acting on the bearing can be adjusted, so as to meet the disassembly requirements of bearings with different lengths.

[0029] It can be understood that the first connecting shaft and the second connecting shaft can be either fixedly connected or detachably connected to the connecting piece 3, and no specific limitation is made here. Of course, when the first connecting shaft and the second connecting shaft are fixedly connected to the connecting piece 3, the first connecting shaft and the second connecting shaft can respectively rotate relative to the load-bearing seat 1 and the tension claw 2.

[0030] Reference Figure 2 As shown in the figure, the load-bearing seat 1 includes a load-bearing beam 11 and a load-bearing ring 12. Among them, the load-bearing beam 11 further includes a main body part 111 and a mounting part 112. A plurality of mounting parts 112 are arranged around the main body part 111 and extend along the radial direction of the threaded hole 113. The first mounting hole 114 is opened on the mounting part 112. The load-bearing ring 12 is coaxially arranged with the main body part 111 and connects a plurality of mounting parts 112 to increase the force and improve the tensile capacity of the load-bearing seat 1. Specifically, the load-bearing beam 11 is integrally formed into a cross-shaped structure, that is, there are four mounting parts 112. Correspondingly, there are also four tension claws 2, which increases the contact points between the puller and the bearing and makes it easier to grasp the bearing. In order to avoid the setting of the load-bearing ring 12 interfering with the adjustment of the connecting piece 3, the load-bearing ring 12 is fixed on the end face of the mounting part 112 far from the main body part 111.

[0031] Reference Figure 1 and 2As shown in the figure, the puller further includes a force - applying handle 5, and the force - applying handle 5 is fixed to the first end of the screw rod 4 away from the claw head of the tension claw 2. Specifically, the force - applying handle 5 includes a connecting portion 51 and a holding portion 52. The connecting portion 51 is set in an L - shape. One end of the connecting portion 51 is connected to the screw rod 4, and the end connected to the screw rod 4 is coaxially arranged with the screw rod 4. The other end extends radially along the threaded hole 113 and is connected to the holding portion 52. The holding portion 52 is parallel to the screw rod 4. On the side of the holding portion 52 facing the screw rod 4, there are four first grooves 521 spaced apart along its own extending direction, and on the side facing away from the screw rod 4, there is a second groove 522. The second groove 522 is located on the side of the four first grooves 521 closer to the screw rod 4. The second groove 522 is used for placing the thumb, and the first grooves 521 are used for placing other fingers, which conforms to ergonomics and is convenient for applying force. The setting of the force - applying handle 5 can make the operation of rotating the screw rod 4 more labor - saving, and one person can operate it.

[0032] The puller further includes a tension sensor 6 and a display screen 7. The tension sensor 6 is arranged at the second end of the screw rod 4, that is, the end of the screw rod 4 close to the claw head of the tension claw 2. The tension sensor 6 is configured to monitor the magnitude of the tension applied to the bearing. The display screen 7 is fixed on the force - applying handle 5 and is electrically connected to the tension sensor 6 for displaying the reading of the tension sensor 6. Specifically, the tension sensor 6 is embedded in the screw rod 4 and slightly protrudes from the screw rod 4 to protect the tension sensor 6. The display screen 7 is also embedded in the force - applying handle 5 to protect the display screen 7. More specifically, the display screen 7 is located on the side of the connecting portion 51 facing away from the claw head of the tension claw 2 for convenient viewing of the tension reading displayed on the display screen 7, and the display screen 7 includes a first switch for controlling the opening and closing of the display screen 7.

[0033] Rotate the screw rod 4 to move the second end of the screw rod 4 in the axial direction. The tension sensor 6 contacts the end face of the shaft. As the screw rod 4 continues to rotate, the reading of the tension sensor 6 increases. By recording the tension data each time the bearing is disassembled, it can be understood that due to different degrees of wear of the bearings, the force required to disassemble them is significantly different. Therefore, the monitoring of the tension data can be used to analyze the degree of wear of the bearings, and then predict the maintenance cycle of the bearings to improve predictability. At the same time, the setting of the tension sensor 6 can also avoid the possibility of the bearing hurting people due to excessive force by comparing the previous tension data through real - time monitoring of the tension, thus improving safety. Specifically, the tension sensor 6 uses an S - type tension sensor.

[0034] Considering that the working environment of using the puller may have insufficient light, such as problems of low visibility during night operations, underground facilities or in enclosed spaces, the puller further includes a light source module 8. The light source module 8 is installed on the force - applying handle 5, for example, installed at the end where the connecting portion 51 and the holding portion 52 of the force - applying handle 5 are connected, and faces the load - bearing seat 1.

[0035] In one embodiment, the light source module 8 includes a plurality of LED light sources, which are embedded in the connecting portion 51. At the same time, the light source module 8 further includes a second switch for controlling the on / off of the LED light sources, and the second switch can also be arranged on the display screen 7. Specifically, an installation groove is formed on the connecting portion 51, and the light source module 8 is detachably fixed in the installation groove by means including but not limited to snap connection and bolt connection, so as to facilitate the replacement of the light source module 8.

[0036] When using the above puller to disassemble the bearing, first adjust the position of the connecting piece 3 on the pulling claw 2 according to the size of the distance between the end face of the shaft and the bearing position, and at the same time adjust the position of the connecting piece 3 on the bearing seat 1 according to the diameter of the bearing. Then hook the claw head of the pulling claw 2 on the bearing base, and make the tensile sensor 6 located on the screw rod 4 abut against the end face of the shaft by rotating the force application handle 5, and continue to rotate the force application handle 5 to pull out the bearing.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A llama, characterized in that, The puller includes: A load-bearing seat (1), on which a threaded hole (113) and a first mounting hole group are provided. Multiple groups of the first mounting hole groups are arranged around the threaded hole (113), and any one group of the first mounting hole groups includes a plurality of first mounting holes (114) spaced apart radially along the threaded hole (113); A screw rod (4) that passes through the threaded hole (113) and is threadedly connected to the load-bearing seat (1); Tensile claws (2), corresponding to the first mounting hole groups one by one. A plurality of second mounting holes (21) are arranged at intervals along the length direction of the tensile claws (2); A connecting piece (3), the first end of the connecting piece (3) is detachably and rotatably connected to the load-bearing seat (1) through a first connecting shaft inserted into the first mounting hole (114), and the second end of the connecting piece (3) is detachably and rotatably connected to the tensile claw (2) through a second connecting shaft inserted into the second mounting hole (21).

2. The puller according to claim 1, characterized in that, The load-bearing seat (1) includes a load-bearing beam (11), the load-bearing beam (11) includes a main body part (111) and a mounting part (112). The threaded hole (113) is provided on the main body part (111). A plurality of the mounting parts (112) are arranged around the main body part (111) and extend radially along the threaded hole (113). The first mounting hole (114) is provided on the mounting part (112).

3. The puller according to claim 2, characterized in that, The load-bearing beam (11) has a cross-shaped structure, and four tensile claws (2) are provided.

4. The puller according to claim 2, characterized in that, The load-bearing seat (1) includes a load-bearing ring (12), the load-bearing ring (12) is coaxially arranged with the main body part (111), and the load-bearing ring (12) connects a plurality of the mounting parts (112).

5. The puller according to any one of claims 1-4, characterized in that, The puller further includes a force-applying handle (5), and the force-applying handle (5) is fixed to one end of the screw rod (4) away from the claw head of the tensile claw (2).

6. The puller according to claim 5, wherein The force-applying handle (5) includes a connecting part (51) and a holding part (52). One end of the connecting part (51) is connected to the screw rod (4), the other end of the connecting part (51) is connected to the holding part (52), and the holding part (52) is parallel to the screw rod (4).

7. The puller according to claim 6, characterized in that, The puller further includes a light source module (8), the light source module (8) is installed on the connecting part (51) and is arranged facing the load-bearing seat (1).

8. The puller according to claim 7, wherein The light source module (8) is embedded in the connecting part (51).

9. The puller according to any one of claims 1 to 4, characterized in that The puller further includes a tensile force sensor (6) and a display screen (7). The tensile force sensor (6) is arranged at one end of the screw rod (4) close to the claw head of the tensile claw (2), and the display screen (7) is electrically connected to the tensile force sensor (6).

10. The puller according to claim 9, characterized in that, The tensile force sensor (6) adopts an S-type tensile force sensor.

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