Bolt shearing type power twister for protecting transmission shaft

Abstract

The utility model discloses a bolt cut-off type power twister for protecting a transmission shaft, and particularly relates to the field of cut-off type power twister, which comprises a first twister body, and a claw fork is fixedly mounted at the top end of the first twister body; the second device body is arranged below the first device body, the first device body and the second device body are the same in shape, and an input shaft is fixedly installed at the bottom end of the second device body; the bolt assembly is arranged at one end of the first device body and one end of the second device body, and the first device body and the second device body are fixedly connected through the bolt assembly. According to the protective bolt assembly, the protective bolt assembly is composed of the first bolt and the second bolt, the first bolt and the second bolt are assembled and connected through the connecting rod, the connecting rod in the protective bolt assembly can be cut off when the protective bolt assembly encounters resistance in the working process, and the first bolt and the second bolt are separated; and subsequently, the connecting rod in the first bolt and the second bolt which are cut off is taken out and replaced for continuous use, so that the protection cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of shearing torque devices, and more specifically, to a bolt shearing torque device for protecting a transmission shaft. Background Art

[0002] Under normal working conditions, the engine power can be transmitted to the working parts. However, due to the complexity of the actual work, the working equipment can easily be stuck by stones or entangled by weeds, resulting in excessive torque, which can easily cause damage to equipment such as the drive shaft. Bolt shearing torque device: when the torque is too large, that is, when the equipment encounters resistance during work (such as being stuck by stones), the protective bolt is sheared, the drive shaft starts to idle, and power transmission stops, thereby protecting the equipment.

[0003] However, in actual use, when the existing bolt shearing torque device is used to protect the transmission shaft, the protection bolt will be sheared off and cannot be reused, which results in high cost. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a bolt shearing torque device for protecting a transmission shaft. A protective bolt assembly is provided, which consists of a first bolt and a second bolt assembly, and the first bolt and the second bolt are assembled and connected by a connecting rod. When the equipment encounters resistance during operation, the internal connecting rod will be sheared off, causing the first bolt to be separated from the second bolt. Subsequently, the connecting rods in the sheared first bolt and the second bolt are taken out and replaced, and the equipment can continue to be used, thereby greatly reducing the protection cost.

[0005] To achieve the above object, the utility model provides the following technical solution: a bolt shearing torque device for protecting a transmission shaft, comprising:

[0006] A first body, a horn fork is fixedly mounted on the top of the first body;

[0007] A second body, which is arranged below the first body, and the first body and the second body have the same shape, and an input shaft is fixedly mounted on the bottom end of the second body;

[0008] A bolt assembly is arranged at one end of the first body and the second body, and the first body and the second body are fixedly connected by the bolt assembly.

[0009] Preferably, connecting holes are provided on both sides of the inner wall of the clevis fork, and a connecting groove is provided at the bottom end of the input shaft, which is connected to the transmission shaft through the clevis fork.

[0010] Preferably, a rotating shaft is fixedly mounted on the top of the second body, and balls are embedded in the outer surface of the rotating shaft, so that the rotating shaft rotates on the first body through the balls.

[0011] Preferably, a rotation groove is provided on the outer surface of the bottom end of the first body, and the rotation shaft matches the rotation groove, and the second body is rotatably connected to the first body via the rotation shaft.

[0012] Preferably, the bolt assembly includes a first bolt inserted into one end of the first body, a second bolt inserted into one end of the second body, and the first body and the second body are connected by the first bolt and the second bolt.

[0013] Preferably, the first bolt and the second bolt are both hollow structures, a connecting rod is provided between the inside of the first bolt and the second bolt, and the first bolt and the second bolt are connected by the connecting rod, and the first bolt and the second bolt are both threadedly connected to the connecting rod.

[0014] Technical effects and advantages of the utility model:

[0015] By providing a protective bolt assembly consisting of a first bolt and a second bolt assembly, and the first bolt and the second bolt are assembled and connected using a connecting rod, when the equipment encounters resistance during work, the internal connecting rod will be cut off, causing the first bolt and the second bolt to separate. Subsequently, the connecting rods inside the cut first bolt and the second bolt can be taken out and replaced, and the equipment can continue to be used, thereby greatly reducing protection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 .

[0017] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 .

[0018] Figure 3 The overall structure explosion of the utility model Figure 1 .

[0019] Figure 4 The overall structure explosion of the utility model Figure 2 .

[0020] Figure 5 It is a structural explosion diagram of the bolt assembly of the utility model.

[0021] The figures are marked as follows: 1. first body; 11. rotating groove; 2. second body; 21. input shaft; 22. connecting groove; 23. rotating shaft; 24. ball bearing; 3. clevis fork; 31. connecting hole; 4. first bolt; 41. second bolt; 42. connecting rod. DETAILED DESCRIPTION

[0022] The utility model provides Figure 1-5A bolt shearing torque device for protecting a transmission shaft includes:

[0023] A first body 1, a horn fork 3 is fixedly mounted on the top of the first body 1;

[0024] A second body 2, which is disposed below the first body 1, and has the same shape as the first body 1 and a bottom end of the second body 2 is fixedly mounted with an input shaft 21;

[0025] A bolt assembly is provided at one end of the first body 1 and the second body 2, and the first body 1 and the second body 2 are fixedly connected by the bolt assembly.

[0026] In a preferred embodiment, Figure 1-2 As shown, connecting holes 31 are provided on both sides of the inner wall of the horn fork 3, and a connecting groove 22 is provided at the bottom end of the input shaft 21. When in use, the horn fork 3 is connected to the transmission shaft, and then the input shaft 21 is connected to the driving component, and the driving component drives the transmission shaft to rotate through the device.

[0027] In a preferred embodiment, Figure 3 As shown, a rotating shaft 23 is fixedly installed on the top of the second body 2, and balls 24 are embedded in the outer surfaces of the rotating shaft 23. A rotating groove 11 is opened on the outer surface of the bottom end of the first body 1, and the rotating shaft 23 matches the rotating groove 11. The second body 2 is rotatably connected to the first body 1 through the rotating shaft 23, and the rotating shaft 23 will rotate along the rotating groove 11.

[0028] In a preferred embodiment, Figure 4 As shown, the bolt assembly includes a first bolt 4 inserted into one end of the first body 1, and a second bolt 41 is inserted into one end of the second body 2. The first bolt 4 and the second bolt 41 are both hollow structures. A connecting rod 42 is provided between the first bolt 4 and the second bolt 41, and the first bolt 4 and the second bolt 41 are connected by the connecting rod 42. The first bolt 4 and the second bolt 41 are both threadedly connected to the connecting rod 42. When the torque is too large, that is, when the equipment encounters resistance during operation, the first body 1 and the second body 2 will shear off the connecting rod 42 in the first bolt 4 and the second bolt 41, so that the first bolt 4 is separated from the second bolt 41.

[0029] Working principle of this utility model:

[0030] Refer to the instruction manual Figure 1-5When in use, connect the clevis fork 3 with the transmission shaft, and then connect the input shaft 21 with the driving assembly. The driving assembly drives the transmission shaft to rotate through the device. The first body 1 and the second body 2 are fixed by a bolt assembly, and the first screw rod 4 and the second screw rod 41 in the bolt assembly are threadedly connected by a connecting rod 42. When the torque is too large, that is, when the equipment encounters resistance during operation, the first body 1 and the second body 2 will cut off the connecting rod 42 in the first bolt 4 and the second bolt 41, so that the first bolt 4 is separated from the second bolt 41, and the rotating shaft 23 will rotate along the rotating groove 11. After the first bolt 4 and the second bolt 41 are separated, the first bolt 4 and the second bolt 41 are taken out from the first body 1 and the second body 2, and the cut connecting rod 42 is taken out from the first bolt 4 and the second bolt 41 for replacement.

Claims

1. A bolt shearing torque device for protecting a transmission shaft, characterized in that: include: A first body (1), a horn fork (3) being fixedly mounted on the top of the first body (1); A second body (2), the second body (2) being arranged below the first body (1), the first body (1) and the second body (2) having the same shape, and an input shaft (21) being fixedly mounted at the bottom end of the second body (2); A bolt assembly, the bolt assembly being arranged at one end of the first body (1) and the second body (2), and the first body (1) and the second body (2) are fixedly connected via the bolt assembly; The bolt assembly comprises a first bolt (4) inserted into one end of the first body (1), and a second bolt (41) inserted into one end of the second body (2); The first bolt (4) and the second bolt (41) are both hollow structures, a connecting rod (42) is provided between the first bolt (4) and the second bolt (41), and the first bolt (4) and the second bolt (41) are connected via the connecting rod (42), and the first bolt (4) and the second bolt (41) are both threadedly connected to the connecting rod (42).

2. A bolt shearing torque device for protecting a transmission shaft according to claim 1, characterized in that: Connecting holes (31) are provided on both sides of the inner wall of the horn fork (3), and a connecting groove (22) is provided at the bottom end of the input shaft (21).

3. A bolt shearing torque device for protecting a transmission shaft according to claim 1, characterized in that: A rotating shaft (23) is fixedly mounted on the top of the second body (2), and balls (24) are embedded in the outer surfaces of the rotating shaft (23).

4. A bolt shearing torque device for protecting a transmission shaft according to claim 3, characterized in that: The outer surface of the bottom end of the first body (1) is provided with a rotation groove (11), and the rotation shaft (23) matches the rotation groove (11), and the second body (2) is rotationally connected to the first body (1) via the rotation shaft (23).

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