Bearing torque adjusting tool

Abstract

The utility model discloses a bearing torque adjusting tool which comprises an adjusting nut, an adapter and a nut adjusting claw. One end of the adapter is provided with a coupling port, and the other end is provided with a square port; the nut adjusting claw comprises a barrel body and limiting columns, the multiple limiting columns are arranged at one end of the barrel body in a circumferential distribution mode, and the multiple limiting columns are clamped on the periphery of the adjusting nut in a sleeving mode and used for limiting the adjusting nut to generate torsion relative to the barrel body. The output end of the electric or pneumatic torque wrench is in butt joint and transmission with the transmission shaft or the output shaft through the adapter, the shaft body is driven to rotate, the adapter is sleeved with the nut adjusting claw, one end of the nut adjusting claw is clamped with the nut adjusting claw, and the other end of the nut adjusting claw is connected with the counter-force applying connecting position on the electric or pneumatic torque wrench in a sleeved mode. And the rotation of the adjusting nut is limited, so that the shaft body rotates relative to the adjusting nut under the driving of an electric or pneumatic torque wrench, and the locking torque of the bearing is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly, in particular to a bearing torque regulating tool. Background Art

[0002] During the assembly process of the rotary reducer, it is very important to adjust the inner and outer ring clearances of the two bearings installed on the output shaft to achieve the torque value (output shaft rotation torque) required by the design, which directly affects the service life of the reducer. For the locking torque adjustment of the bearings on the transmission shaft or output shaft, most of them use a special nut wrench to hand-tighten the corresponding locking nut. Or use an electric or pneumatic torque wrench to apply torque to the nut. For example, Chinese patent 201821896799.7 discloses a quick clamping device for a screw bearing of an electric actuator, including a base plate and a front plate and a rear plate fixed to the base plate, the front plate and the rear plate are parallel to each other and perpendicular to the base plate, the front plate is provided with bayonet holes parallel to both sides, the side of the rear plate opposite to the front plate is provided with a groove opposite to the bayonet, and also includes a connecting sleeve, one end of the connecting sleeve is provided with a sleeve adapted to the transmission shaft on the electric actuator screw, and the other end of the connecting sleeve is provided with a square hole adapted to the pneumatic torque wrench.

[0003] The above-mentioned prior art has high limitations when adjusting the bearing locking torque, and cannot be operated in a narrow space. For example, when the locking nut is located in the shaft hole, it is difficult to apply torque to the locking nut with conventional tools, and it is not convenient to limit the locking nut externally. Therefore, how to quickly and efficiently adjust the bearing locking torque in a narrow space is a technical problem that needs to be solved. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies and propose a bearing torque adjustment tool to solve the technical problem of how to quickly and efficiently adjust the bearing locking torque in a narrow space in the prior art.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a bearing torque adjustment tool, comprising:

[0007] Adjusting nut;

[0008] An adapter having a coupling opening at one end and a square opening at the other end; and

[0009] The nut adjusting claw comprises a cylinder and a limiting column. A plurality of the limiting columns are arranged in a circular distribution at one end of the cylinder. A plurality of the limiting columns are clamped on the outer circumference of the adjusting nut to limit the torsion of the adjusting nut relative to the cylinder. A spline groove is provided on the inner side of the other end of the cylinder, and the cylinder is sleeved on the outer side of the adapter.

[0010] In some embodiments, an electric torque wrench is also included, and a torque square shaft is provided at an output end of the electric torque wrench, and a spline is provided on the outer side of the electric torque wrench coaxially with the torque square shaft.

[0011] In some embodiments, the torque square shaft is plugged into the square port, and the spline is plugged into the spline groove.

[0012] In some embodiments, a plurality of slots are formed on the outer side of the adjusting nut, and a plurality of the limiting columns are plugged into the plurality of the slots in a one-to-one correspondence.

[0013] In some embodiments, the adjusting nut is ring-shaped.

[0014] In some embodiments, the number of the card slots is at least three.

[0015] In some embodiments, the adjusting nut is a hexagonal nut, and the adjusting nut is inserted between a plurality of the limiting columns.

[0016] In some embodiments, one side of the limiting column is planar and abuts against a side surface of the adjusting nut, and the number of the limiting columns is at least three.

[0017] In some embodiments, a keyway is provided in the coupling opening for being fitted onto a shaft body provided with a convex key.

[0018] In some embodiments, a convex key is provided in the coupling opening for being fitted onto a shaft body provided with a keyway.

[0019] Compared with the prior art, the bearing torque adjustment tool provided by the utility model connects and transmits the output end of the electric or pneumatic torque wrench with the transmission shaft or output shaft through an adapter, drives the shaft body to rotate, and adjusts the claw sleeve to the outside of the adapter through the nut, and clamps one end of the adjusting nut with the claw clamp, and the other end is sleeved with the reaction force application connection position on the electric or pneumatic torque wrench to limit the rotation of the adjusting nut. Under the drive of the electric or pneumatic torque wrench, the shaft body rotates relative to the adjusting nut, and the locking torque of the bearing is adjusted efficiently and quickly, and can be suitable for narrow spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a bearing torque adjustment tool provided in an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the nut adjusting claw provided in an embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the adjusting nut provided in an embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a bearing torque adjustment tool provided by another embodiment of the utility model;

[0024] Figure 5 It is a three-dimensional exploded view of a bearing torque adjustment tool provided by another embodiment of the utility model;

[0025] Figure 6 This is a three-dimensional exploded view from another perspective of a bearing torque adjustment tool provided by another embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the connection between the shaft and the adapter provided by a certain embodiment of the utility model;

[0027] Figure 8 This is a schematic diagram of the connection between the shaft and the adapter provided in a certain embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] In order to solve the technical problem of how to quickly and efficiently adjust the bearing locking torque in a small space, the utility model provides a bearing torque adjustment tool, which can achieve fast and efficient adjustment of the bearing locking torque in a small space.

[0030] It should be noted that the bearing torque adjusting tool described in the present invention is used for but not limited to the application of bearing locking torque on the output shaft. For the convenience of explanation, in the present invention, only the application of the bearing torque adjusting tool to the bearing locking torque on the output shaft is used as an example for explanation. The principle of applying the bearing torque adjusting tool to other types of equipment is essentially the same as the principle applied to the application of the bearing locking torque on the output shaft, and will not be elaborated here.

[0031] See also Figure 1 , Figure 1The schematic diagram of the structure of the bearing torque adjustment tool in one embodiment of the utility model is as follows. The bearing torque adjustment tool comprises an adjustment nut 1, an adapter 2 and a nut adjustment claw 3; a coupling opening 201 is provided at one end of the adapter 2, and a square opening 202 is provided at the other end thereof, wherein the coupling opening 201 is used to be sleeved onto the shaft body of the output shaft for coupling drive, and the square opening 202 is used to be sleeved onto the output end of the electric torque wrench 4 or the pneumatic torque wrench, and the electric torque wrench 4 or the pneumatic torque wrench is inserted into the square opening 202 to drive the adapter 2 to rotate, and the adapter 2 is driven by the adapter 2. The head 2 drives the shaft body of the output shaft to rotate; the nut adjusting claw 3 includes a cylinder 31 and a limit column 32, and a plurality of the limit columns 32 are arranged in a circular distribution at one end of the cylinder 31, and a plurality of the limit columns 32 are clamped on the outer periphery of the adjusting nut 1 to limit the torsion of the adjusting nut 1 relative to the cylinder 31. A spline groove 301 is provided on the inner side of the other end of the cylinder 31, and the spline groove 301 is mounted on the electric torque wrench 4 or the pneumatic torque wrench for positioning. The cylinder 31 is mounted on the outside of the adapter 2, and the adapter 2 and the cylinder 31 are distributed inside and outside.

[0032] In this embodiment, the adjusting nut 1 is limited by the nut adjusting claw 3, and then the shaft body 5 is driven to rotate by the adapter 2, so that the shaft body 5 rotates relative to the adjusting nut 1, thereby adjusting the locking torque of the bearing 501 on the shaft body 5 by the adjusting nut 1. The nut adjusting claw 3 is coaxially sleeved to the outside of the adapter 2, which is convenient for insertion into the narrow space of the shaft hole, thereby achieving the effect of quickly and efficiently adjusting the bearing locking torque in a narrow space.

[0033] It can be understood that the conventional locking structure of the bearing 501 is that the adjusting nut 1 is threadedly connected to the shaft body 5 and abuts against the end face of the bearing 501 mounted on the shaft body 5. The locking torque of the bearing 501 is controlled by applying torque to the adjusting nut 1.

[0034] In one embodiment, see Figure 1 , and also includes an electric torque wrench 4, whose output end is provided with a torque square shaft 401, and the electric torque wrench 4 is used to drive the torque square shaft 401 to rotate. The outer side of the electric torque wrench 4 is coaxially provided with a spline 402 with the torque square shaft 401, and the spline 402 is fixed on the electric torque wrench 4.

[0035] Specifically, the torque square shaft 401 is plugged into the square port 202, and the torque square shaft 401 is driven to rotate by the electric torque wrench 4. Under the plug-in connection of the square port 202, the adapter 2 can be driven to rotate, and the spline 402 is plugged into the spline groove 301. Through the plug-in of the spline 402 and the spline groove 301, the rotation of the nut adjusting claw 3 can be limited, and the nut adjusting claw 3 in turn limits the rotation of the adjusting nut 1. When the electric torque wrench 4 is used, the nut adjusting claw 3 and the adjusting nut 1 do not rotate, while the adapter 2 and the shaft body 5 rotate. When the adjusting nut is threadedly connected to the shaft body 5, the shaft body 5 rotates relative to the adjusting nut 1 to adjust the locking torque of the bearing 501.

[0036] In one embodiment, see Figure 2 and Figure 3 A plurality of slots 101 are provided on the outer side of the adjusting nut 1 , and a plurality of the limiting posts 32 are plugged into the plurality of the slots 101 in a one-to-one correspondence. The adjusting nut 1 is limited by plugging the limiting posts 32 into the slots 101 .

[0037] Specifically, the adjusting nut 1 is annular in shape so as to be adapted to be locked with the bearing 501 having an increased diameter of the shaft body 5 .

[0038] Furthermore, in order to balance the force, the number of the slots 101 is at least three, preferably, the number of the slots 101 is four, and correspondingly, the number of the limiting columns 32 is also four, and both the slots 101 and the limiting columns 32 are square.

[0039] During use, the end of the cylinder 31 on the nut adjusting claw 3 is fitted to the end face of the adjusting nut 1, and at the same time, the upper limit posts 32 are inserted one by one into the slots 101 of the adjusting nut 1, thereby forming a claw clamp limit for the adjusting nut 1.

[0040] In another embodiment, see Figure 4 , Figure 5 and Figure 6 In order to adapt to the situation of locking with a hexagonal nut under a smaller shaft diameter of the shaft body 5, the adjusting nut 1 is a hexagonal nut, and the adjusting nut 1 is inserted between several of the limiting columns 32, and abuts against the side of the hexagonal nut through multiple limiting columns 32 to form a claw clamp limit.

[0041] Specifically, one side of the limiting column 32 is in a plane shape and abuts against a side surface of the adjusting nut 1 . The number of the limiting columns 32 is at least three, wherein a side surface of the limiting column 32 opposite to the plane is an arc surface.

[0042] It can be understood that when the outer circumferential surface of the adjusting nut 1 is a polygon, multiple limit columns 32 abut against multiple side surfaces of the adjusting nut 1 to form a claw clamp to limit it; when the outer circumferential surface of the adjusting nut 1 is an arc surface, a groove can be used to allow the limit columns 32 to be embedded to form a claw clamp to limit it, thereby achieving the purpose of limiting the rotation of the adjusting nut 1.

[0043] In one embodiment, see Figure 7 In order to be fitted onto the output shaft with the convex key 7 and have a coupling effect, a keyway 6 is provided in the coupling opening 201 for fitting onto the shaft body 5 with the convex key 7 to achieve the purpose of the coupling driving the shaft body 5 to rotate.

[0044] In one embodiment, see Figure 8 In order to be fitted onto the output shaft with a keyway 6 and have a coupling effect, a convex key 7 is provided in the coupling opening 201 for fitting onto the shaft body 5 with a keyway 6 to achieve the purpose of the coupling driving the shaft body 5 to rotate.

[0045] In order to better understand the present invention, the following Figures 1 to 8 The technical solution of the utility model is described in detail: first, the adjusting nut 1 is threadedly connected to the shaft body 5 and abuts against the end face of the bearing 501 mounted on the shaft body 5. On this basis, the locking torque of the bearing 501 is adjusted. The coupling port 201 on the adapter 2 is first mounted on the end of the shaft body 5. According to the specific situation of the shaft coupling of the shaft body 5, the adapter 2 with a built-in keyway 6 or a built-in convex key 7 is selected for mounting to achieve the coupling effect; after the adapter 2 is mounted, the nut adjusting claw 3 is mounted on the outside of the adapter 2. When the adjusting nut 1 is annular, the limit column 32 is correspondingly inserted into the slot 101 on the adjusting nut 1 to form a claw clamp. When When the adjusting nut 1 is hexagonal, the limiting column 32 is abutted against its side to form a claw clamp; after the nut adjusting claw 3 is installed, the torque square shaft 401 of the electric torque wrench 4 is inserted into the square opening 202 on the adapter 2, and at the same time, the spline 402 on the electric torque wrench 4 is inserted into the cylinder 31 of the nut adjusting claw 3 and fits with the spline groove 301 therein, driving the torque square shaft 401 to rotate, and under the coupling transmission of the adapter 2, the shaft body 5 is driven to rotate, and the adjusting nut 1 is restricted from rotating at the docking of the nut adjusting claw 3 and the spline 402, so that the shaft body 5 is threadedly connected and rotated relative to the adjusting nut 1, thereby achieving the purpose of adjusting the locking torque.

[0046] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A bearing torque adjustment tool, characterized in that: include: Adjusting nut; The adapter has a coupling opening at one end and a square opening at the other end; as well as The nut adjusting claw comprises a cylinder and a limiting column. A plurality of the limiting columns are arranged in a circular distribution at one end of the cylinder. A plurality of the limiting columns are clamped on the outer circumference of the adjusting nut to limit the torsion of the adjusting nut relative to the cylinder. A spline groove is provided on the inner side of the other end of the cylinder, and the cylinder is sleeved on the outer side of the adapter.

2. The bearing torque adjustment tool according to claim 1, characterized in that: It also includes an electric torque wrench, an output end of which is provided with a torque square shaft, and the outer side of the electric torque wrench is coaxially provided with a spline with the torque square shaft.

3. The bearing torque adjustment tool according to claim 2, characterized in that: The torque square shaft is plugged into the square port, and the spline is plugged into the spline groove.

4. The bearing torque adjustment tool according to claim 1, characterized in that: A plurality of slots are provided on the outer side of the adjusting nut, and a plurality of the limiting columns are plugged into the plurality of slots in a one-to-one correspondence.

5. The bearing torque adjustment tool according to claim 4, characterized in that: The adjusting nut is in the shape of a ring.

6. The bearing torque adjustment tool according to claim 5, characterized in that: The number of the card slots is at least three.

7. The bearing torque adjustment tool according to claim 1, characterized in that: The adjusting nut is a hexagonal nut, and the adjusting nut is inserted between a plurality of the limiting columns.

8. The bearing torque adjustment tool according to claim 7, characterized in that: One side of the limiting column is planar and abuts against one side surface of the adjusting nut. The number of the limiting columns is at least three.

9. The bearing torque adjustment tool according to claim 1, characterized in that: A keyway is provided in the coupling opening for being fitted onto a shaft body provided with a convex key.

10. The bearing torque adjustment tool according to claim 1, characterized in that: A convex key is arranged in the coupling opening for being fitted onto a shaft body provided with a keyway.

Images