Torque wrench facilitating force application

Abstract

The utility model relates to a torque wrench facilitating force application, and relates to the technical field of bolt tightening, the torque wrench mainly comprises a counter-force arm device, the counter-force arm device comprises a connecting plate, the connecting plate is detachably mounted at the head of the torque wrench, and a mounting hole allowing the head of the torque wrench to penetrate through is formed in the connecting plate; the connecting plate comprises a first connecting part and a second connecting part, the width of the second connecting part is smaller than that of the first connecting part, the mounting hole is formed in the first connecting part, a limiting pin is detachably mounted on the second connecting part, and the limiting pin is matched with an adjacent bolt hole in a fastener. By means of the bolt fastening device, an operator can conveniently conduct bolt fastening machining in a narrow space, and meanwhile the situation that the operator is injured due to counter-acting force is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bolt tightening technology, in particular to a torque wrench facilitating force application. BACKGROUND

[0002] In the process of automobile production, a large number of hub bolts need to be tightened, so a torque wrench is usually used to tighten the hub bolts. However, the torque of the hub bolt is very large when it is tightened to the specified torque, and the reaction force generated will be transmitted to the worker's hand through the torque wrench. In the process of tightening a large number of hub bolts, it is difficult for the worker to counteract the reaction force of the tightened bolt when using the torque wrench to tighten the hub bolt, and even the worker cannot hold the torque wrench. This reaction force will cause fatigue and even damage to the worker's hand, wrist and shoulder, and the worker has the risk of injury during operation.

[0003] In the prior art, a reaction arm device is usually installed on the head of the torque wrench to reduce the adverse effects of the reaction force. However, the existing reaction arm device is relatively large in size, and cannot be designed and arranged in some narrow spaces. CONTENT OF THE UTILITY MODEL

[0004] In order to facilitate the tightening of the bolt by the operator in a narrow space and reduce the injury of the operator caused by the reaction force, the present application provides a torque wrench facilitating force application.

[0005] The torque wrench facilitating force application provided by the present application adopts the following technical solution:

[0006] A torque wrench facilitating force application mainly comprises a reaction arm device, the reaction arm device comprises a connecting plate, the connecting plate is detachably installed on the head of the torque wrench, and the connecting plate is provided with a mounting hole for the head of the torque wrench to pass through;

[0007] The connecting plate comprises a first connecting portion and a second connecting portion, the width of the second connecting portion is smaller than the width of the first connecting portion, the mounting hole is located on the first connecting portion, and a limiting pin is detachably installed on the second connecting portion, the limiting pin is matched with the adjacent bolt hole on the fastener.

[0008] By adopting the technical scheme, before the bolt is fastened by the torque wrench, the operator can install the counterforce arm device on the head of the torque wrench in advance, and install the positioning pin on the second connecting part; when the bolt is tightened, the operator can butt the connecting sleeve of the head of the torque wrench against the bolt, and insert the limiting pin into the adjacent bolt hole of the fastener; when the torque wrench completes the operation of fastening the bolt, the counterforce arm device limits the torque wrench, so that the operator is prevented from being injured by the torque wrench. At the same time, since the counterforce arm device is small in size, the second connecting part can be inserted into a narrow space during the fastening operation, so that the bolt fastening operation in a complex space is facilitated.

[0009] Preferably, a first mounting block and a second mounting block are detachably mounted on one side of the connecting plate close to the neck of the torque wrench, the second mounting block is located between the first mounting block and the connecting plate, and an avoiding hole for avoiding the neck of the torque wrench is arranged between the first mounting block and the second mounting block.

[0010] By adopting the technical scheme, when the counterforce arm device is installed, the operator can install the connecting plate on the head of the torque wrench through the mounting hole in advance, and then install the first mounting block and the second mounting block on the connecting plate, so that the first mounting block and the second mounting block are connected between the neck of the torque wrench and the connecting plate, and the technical effect of detachable connection between the counterforce arm device and the torque wrench is achieved.

[0011] Preferably, two first threaded holes are arranged through the first mounting block, and the two first threaded holes are located on both sides of the avoiding hole;

[0012] Two second threaded holes are arranged through the second mounting block, the two second threaded holes are coaxially arranged with the two first threaded holes respectively, and the two second threaded holes are located on both sides of the avoiding hole;

[0013] Two third threaded holes are arranged through the connecting plate, and the two third threaded holes are coaxial with the two third threaded holes respectively;

[0014] The first mounting block and the second mounting block are detachably installed on the connecting plate through two positioning bolts.

[0015] By adopting the technical scheme, the first mounting block and the second mounting block can be installed on the connecting plate through the two positioning bolts, so as to achieve the detachable connection between the counterforce arm device and the torque wrench.

[0016] Preferably, a fourth threaded hole is arranged at the end of the second connecting part, a threaded connecting part is arranged at the end of the limiting pin, and the limiting pin is threadedly installed in the fourth threaded hole.

[0017] By adopting the technical scheme, the limiting pin can be installed on the second connecting part by the fourth threaded hole, which is convenient for the operator.

[0018] Preferably, the limiting pin comprises a cylindrical tapered end coaxially arranged with the limiting pin, the tapered end being located at one end of the limiting pin away from the second connecting part, and the diameter of the tapered end being smaller than the diameter of the limiting pin.

[0019] By adopting the technical scheme, the limiting pin can be inserted into the adjacent threaded hole when the operator fastens the limiting pin using the torque wrench, which is convenient.

[0020] Preferably, the first mounting block and the second mounting block are both nylon blocks.

[0021] By adopting the technical scheme, the nylon block has excellent strength, toughness and wear resistance, which can improve the reliability of the connection between the connecting plate and the torque wrench.

[0022] In summary, the torque wrench facilitating force application has at least one of the following beneficial technical effects:

[0023] 1. Before the torque wrench is used to fasten the bolt, the operator can install the counterforce arm device on the head of the torque wrench and install the limiting pin on the second connecting part; when the bolt is tightened, the operator can butt the connecting sleeve of the head of the torque wrench against the bolt and insert the limiting pin into the adjacent threaded hole of the fastener; when the torque wrench completes the operation of fastening the bolt, the counterforce arm device limits the torque wrench, so that the operator is not injured by the torque wrench;

[0024] 2. Since the counterforce arm device has a small size, the second connecting part can be inserted into a narrow space during fastening, so that the bolt fastening operation can be conveniently performed in a complex space. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of the counterforce arm device and the torque wrench according to an embodiment of the present application.

[0026] Figure 2 is a schematic view of the overall structure of the counterforce arm device according to an embodiment of the present application.

[0027] Figure 3 is a schematic view of the installation structure of the limiting pin, the first mounting block and the second mounting block according to an embodiment of the present application.

[0028] Explanation of reference numerals in the attached drawings: 1. Connecting plate; 11. First connecting part; 12. Second connecting part; 13. Mounting hole; 14. First mounting block; 141. First threaded hole; 15. Second mounting block; 151. Second threaded hole; 16. Clearance hole; 17. Third threaded hole; 18. Positioning bolt; 19. Fourth threaded hole; 2. Torque wrench; 3. Limit pin; 31. Threaded connecting part; 32. Tapered end. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0030] Example

[0031] This application discloses a torque wrench that facilitates the application of force. (Refer to...) Figure 1 It mainly includes a reaction arm device, which includes a connecting plate 1 arranged in an approximately T-shape. The connecting plate 1 is detachably installed on the head of the torque wrench 2. The connecting plate 1 has a mounting hole 13 for the head of the torque wrench 2 to pass through. The connecting plate 1 includes a first connecting part 11 and a second connecting part 12. The width of the second connecting part 12 is smaller than the width of the first connecting part 11. The mounting hole 13 is located on the first connecting part 11. A limit pin 3 is detachably installed on the second connecting part 12. The limit pin 3 is adapted to the adjacent bolt hole on the fastener.

[0032] Before using torque wrench 2 to tighten bolts, the operator can pre-install the reaction arm device on the head of torque wrench 2 and install the positioning pin on the second connecting part 12. When tightening the bolts, the operator can connect the connecting sleeve of the head of torque wrench 2 to the bolt and insert the limiting pin 3 into the adjacent bolt hole on the fastener. After the torque wrench 2 has completed the bolt tightening operation, the reaction arm device restricts the torque wrench 2, which can prevent the torque wrench 2 from causing injury to the operator.

[0033] At the same time, because the reaction arm device is small in size, it can be extended into a narrow space through the second connecting part 12 during fastening, which makes it convenient to perform bolt fastening operations in complex spaces.

[0034] Reference Figure 1 and Figure 2 A first mounting block 14 and a second mounting block 15 are detachably mounted on the side of the connecting plate 1 near the neck of the torque wrench 2. The second mounting block 15 is located between the first mounting block 14 and the connecting plate 1. An avoidance hole 16 is provided between the first mounting block 14 and the second mounting block 15 to avoid the neck of the torque wrench 2.

[0035] In the installation of the counterforce arm device, the operator can install the connecting plate 1 on the head of the torque wrench 2 through the installation hole 13 in advance, and then install the first mounting block 14 and the second mounting block 15 on the connecting plate 1, and realize the connection between the neck of the torque wrench 2 and the connecting plate 1 through the first mounting block 14 and the second mounting block 15, and realize the technical effect of detachable connection between the counterforce arm device and the torque wrench 2.

[0036] Referring to Figure 3 , two first threaded holes 141 are throughly formed on the first mounting block 14, and the two first threaded holes 141 are located on both sides of the avoiding hole 16; two second threaded holes 151 are throughly formed on the second mounting block 15, and the two second threaded holes 151 are coaxially arranged with the two first threaded holes 141, and the two second threaded holes 151 are located on both sides of the avoiding hole 16; two third threaded holes 17 are throughly formed on the connecting plate 1, and the two third threaded holes 17 are coaxially arranged with the two third threaded holes 17; the first mounting block 14 and the second mounting block 15 are detachably installed on the connecting plate 1 through two positioning bolts 18.

[0037] Through the two positioning bolts 18, the first mounting block 14 and the second mounting block 15 can be installed on the connecting plate 1 to realize the detachable connection between the counterforce arm device and the torque wrench 2.

[0038] It should be noted that in the embodiments of the present application, the first mounting block 14 and the second mounting block 15 are both made of nylon block. The nylon block has excellent strength, toughness and wear resistance, which can improve the reliability of the connection between the connecting plate 1 and the torque wrench 2.

[0039] Referring to Figure 2 and Figure 3 , the end of the second connecting portion 12 is provided with a fourth threaded hole 19, and the end of the limiting pin 3 is provided with a threaded connecting portion 31, and the limiting pin 3 is threadedly installed in the fourth threaded hole 19. Through the fourth threaded hole 19, the operator can conveniently install the limiting pin 3 on the second connecting portion 12. In some other embodiments, according to the hole diameter of the bolt hole, the operator can replace the limiting pin 3 according to the hole diameter of the bolt hole, which is not limited and described here.

[0040] Referring to Figure 1 and Figure 2 , the limiting pin 3 comprises a cylindrical tapered end 32 coaxially arranged with the limiting pin 3, the tapered end 32 is located at one end of the limiting pin 3 away from the second connecting portion 12, and the diameter of the tapered end 32 is smaller than the diameter of the limiting pin 3. Through the setting of the tapered end 32, the operator can conveniently insert the limiting pin 3 into the adjacent screw hole when using the torque wrench 2 for fastening operation.

[0041] To further reduce the injury of the operator when using the torque wrench 2 to perform the fastening operation, please refer to Figure 1 With Figure 2 The two corners of the end of the first connecting part 11 close to the second connecting part 12 are rounded, and the two corners of the end of the second connecting part 12 away from the first connecting part 11 are rounded.

[0042] The implementation principle of the torque wrench according to the embodiment of the present application is as follows: before using the torque wrench 2 to perform the fastening operation on the bolt, the operator can install the counterforce arm device on the head of the torque wrench 2 in advance, and install the positioning pin on the second connecting part 12; when performing the tightening operation on the bolt, the operator can butt the connecting sleeve of the head of the torque wrench 2 against the bolt, and insert the limiting pin 3 into the adjacent bolt holes on the fastener; after the torque wrench 2 completes the operation of tightening the bolt, the counterforce arm device limits the torque wrench 2, so that the damage of the torque wrench 2 to the operator can be avoided. At the same time, since the counterforce arm device has a small size, it can be inserted into a narrow space through the second connecting part 12 when performing the fastening operation, so that the bolt fastening operation in a complex space can be facilitated.

[0043] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A torque wrench for facilitating the application of force, characterised in that, The utility model provides a torque wrench, which comprises a counterforce arm device, the counterforce arm device comprises a connecting plate (1), the connecting plate (1) is detachably installed on the head of a torque wrench (2), and an installation hole (13) is formed in the connecting plate (1) and used for penetrating the head of the torque wrench (2). The connecting plate (1) comprises a first connecting part (11) and a second connecting part (12), the width of the second connecting part (12) is smaller than the width of the first connecting part (11), the installation hole (13) is located on the first connecting part (11), and a limiting pin (3) is detachably installed on the second connecting part (12) and matched with an adjacent bolt hole on a fastener.

2. A torque wrench for facilitating the application of force according to claim 1, wherein, The connecting plate (1) is detachably provided with a first mounting block (14) and a second mounting block (15) on one side close to the neck of the torque wrench (2), the second mounting block (15) is located between the first mounting block (14) and the connecting plate (1), and an avoiding hole (16) is arranged between the first mounting block (14) and the second mounting block (15) and used for avoiding the neck of the torque wrench (2).

3. A torque wrench for facilitating the application of force according to claim 2, wherein, Two first threaded holes (141) are formed in the first mounting block (14) and penetrate the first mounting block (14), and the two first threaded holes (141) are located on both sides of the avoiding hole (16). Two second threaded holes (151) are formed in the second mounting block (15) and penetrate the second mounting block (15), the two second threaded holes (151) are coaxially arranged with the two first threaded holes (141), respectively, and the two second threaded holes (151) are located on both sides of the avoiding hole (16). Two third threaded holes (17) are formed in the connecting plate (1) and penetrate the connecting plate (1), and the two third threaded holes (17) are coaxially arranged with the two third threaded holes (17), respectively. The first mounting block (14) and the second mounting block (15) are detachably installed on the connecting plate (1) through two positioning bolts (18).

4. A torque wrench for facilitating the application of force according to claim 3, wherein, A fourth threaded hole (19) is formed in the end of the second connecting part (12), a threaded connecting part (31) is arranged at the end of the limiting pin (3), and the limiting pin (3) is threadedly installed in the fourth threaded hole (19).

5. A torque wrench for facilitating the application of force according to claim 4, wherein, The limiting pin (3) comprises a cylindrical tapered end (32), the tapered end (32) is coaxially arranged with the limiting pin (3), the tapered end (32) is located at the end of the limiting pin (3) away from the second connecting part (12), and the diameter of the tapered end (32) is smaller than the diameter of the limiting pin (3).

6. A torque wrench for facilitating the application of force according to claim 2, wherein, The first mounting block (14) and the second mounting block (15) are both nylon blocks.

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