Torque wrench

Abstract

The utility model discloses a torque wrench which comprises a connecting rod, a torque display ring is fixedly installed at the lower end of the connecting rod, a handle rod is fixedly installed at the lower end of the torque display ring, a torque adjusting ring is movably installed at the lower end of the handle rod, and a fixing ring is welded to the lower end of the torque adjusting ring. A mounting head is welded to the upper end of the connecting rod, a ratchet wheel head is movably mounted at the rear end of the mounting head, a switching shifting piece is movably mounted at the front end of the mounting head, and limiting nails are mounted at the positions, located on the two sides of the switching shifting piece, of the front end of the mounting head in a threaded mode. According to the torque wrench, the function of temporary placement is achieved, the wrench can be used for operation on a railway contact network more conveniently, falling during temporary placement is prevented, the torque wrench is hung on the railway contact network through the connecting hook, the torque wrench is directly used as a safety buckle, and the use safety of the torque wrench is improved.

Description

Technical Field

[0001] The utility model relates to the field of tools, in particular to a torque wrench. Background Art

[0002] A torque wrench is a type of wrench that is used to install sockets and tighten screws. It can also apply a specific torque value. When the torque value of tightening the screws and bolts reaches the preset value, a sound is emitted as a reminder. It is used in various screw and bolt usage scenarios. However, when using a torque wrench to operate the railway contact network, since the railway contact network is an aerial operation, the torque wrench cannot be temporarily placed and is prone to falling during use, making it inconvenient to use the wrench on the railway contact network. In addition, the wrench can only be used as an operating tool and cannot be safely connected, reducing the safety of the torque wrench. Utility Model Content

[0003] The main purpose of the utility model is to provide a torque wrench which can effectively solve the technical problems raised by the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A torque wrench comprises a connecting rod, a torque display ring is fixedly installed at the lower end of the connecting rod, a handle rod is fixedly installed at the lower end of the torque display ring, a torque adjustment ring is movably installed at the lower end of the handle rod, a fixing ring is welded to the lower end of the torque adjustment ring, a mounting head is welded to the upper end of the connecting rod, a ratchet head is movably installed at the rear end of the mounting head, a switching paddle is movably installed at the front end of the mounting head, limiting nails are threadedly installed on both sides of the switching paddle at the front end of the mounting head, fixing seats are integrally formed on both sides of the mounting head, a connecting hook is integrally formed on the upper end of the fixing seat, a paddle ring is fixedly installed on the outer top of the connecting rod, a spring shaft is movably installed on the inner side of the paddle ring, and a safety paddle is movably installed on the inner side of the paddle ring through the spring shaft.

[0006] As a further solution of the utility model, the connecting rod, the torque display ring, the handle rod and the torque adjustment ring are arranged vertically and installed, and the outside of the handle rod is wrapped with a rubber sleeve.

[0007] As a further solution of the utility model, the ratchet head and the switch paddle are both inserted into the mounting head, the ratchet head and the switch paddle are connected to each other, and the switch paddle is fitted and connected to the limiting pin.

[0008] As a further solution of the present invention, the side surface of the connecting hook is designed in an L-shaped structure, and the connecting hook is located in front of the mounting head and the switching paddle.

[0009] As a further solution of the utility model, the safety paddle is located in front of the connecting rod, and the paddle ring is located below the mounting head.

[0010] As a further solution of the utility model, the paddle ring rotates around the spring shaft, a slot is provided on the top of the safety paddle, and the safety paddle is connected to the bottom of the connecting hook by the slot.

[0011] Compared with the prior art, the utility model has the following beneficial effects: through the provision of a fixing seat, a connecting hook, a paddle ring, a spring shaft and a safety paddle, when working on the railway contact network, the connecting hook can be hung on the railway contact network when the wrench is idle, which plays a role of temporary placement and is more convenient for the operation and use of the wrench on the railway contact network, and the railway contact network passes through the safety paddle, and the safety paddle is used to press the bottom of the connecting hook to play a sealing role to prevent it from falling during temporary placement, and the safety paddle is pressed with a finger to rotate it around the spring shaft, so that the connecting hook can be removed from the railway contact network, and after the connecting hook is fixed, the safety strap can be connected through the fixing ring, and the connecting hook can be hung on the railway contact network, so that the torque wrench can be directly used as a safety buckle, thereby increasing the safety of the torque wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of a torque wrench of the utility model;

[0013] Figure 2 It is a rear view of a torque wrench of the utility model;

[0014] Figure 3 This is a lower diagram of a safety paddle in a torque wrench according to the utility model.

[0015] In the figure: 1. connecting rod; 2. torque display ring; 3. handle rod; 4. torque adjustment ring; 5. fixing ring; 6. mounting head; 7. ratchet head; 8. switching paddle; 9. limit pin; 10. fixing seat; 11. connecting hook; 12. paddle ring; 13. spring shaft; 14. safety paddle. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] like Figure 1-Figure 3As shown, a torque wrench comprises a connecting rod 1, a torque display ring 2 is fixedly installed at the lower end of the connecting rod 1, a handle rod 3 is fixedly installed at the lower end of the torque display ring 2, a torque adjustment ring 4 is movably installed at the lower end of the handle rod 3, a fixing ring 5 is welded at the lower end of the torque adjustment ring 4, a mounting head 6 is welded at the upper end of the connecting rod 1, a ratchet head 7 is movably installed at the rear end of the mounting head 6, a switching paddle 8 is movably installed at the front end of the mounting head 6, limiting pins 9 are threadedly installed on both sides of the switching paddle 8 at the front end of the mounting head 6, fixing seats 10 are integrally formed on both sides of the mounting head 6, a connecting hook 11 is integrally formed at the upper end of the fixing seat 10, a paddle ring 12 is fixedly installed on the outer top of the connecting rod 1, a spring shaft 13 is movably installed on the inner side of the paddle ring 12, and a safety paddle 14 is movably installed on the inner side of the paddle ring 12 through the spring shaft 13.

[0018] In this embodiment, the connecting rod 1, the torque display ring 2, the handle rod 3 and the torque adjustment ring 4 are arranged vertically, and the outside of the handle rod 3 is wrapped with a rubber sleeve to increase the comfort of gripping.

[0019] In this embodiment, the ratchet head 7 and the switch paddle 8 both penetrate into the mounting head 6 , the ratchet head 7 and the switch paddle 8 are connected to each other, the switch paddle 8 is fitly connected to the limit pin 9 , and the limit pin 9 serves to limit the switch paddle 8 .

[0020] In this embodiment, the side of the connecting hook 11 is designed in an L-shaped structure. The connecting hook 11 is located in front of the mounting head 6 and the switching paddle 8. The connecting hook 11 is located in front of the switching paddle 8 and also plays a protective role.

[0021] In this embodiment, the safety paddle 14 is located in front of the connecting rod 1 , and the paddle ring 12 is located below the mounting head 6 .

[0022] In this embodiment, the paddle ring 12 rotates around the spring shaft 13, a slot is provided on the top of the safety paddle 14, the safety paddle 14 is connected to the bottom of the connecting hook 11 by the slot, and the spring shaft 13 drives the safety paddle 14 to always be connected to the connecting hook 11.

[0023] It should be noted that the utility model is a torque wrench. When in use, the connecting rod 1, the torque display ring 2, the handle rod 3, the torque adjustment ring 4 and the installation head 6 constitute the main part of the torque wrench. The handle rod 3 is used for gripping operation, the torque adjustment ring 4 is used for torque adjustment, the torque display ring 2 is used for torque display, the torque adjustment ring 4 is used to install the installation head 6, the ratchet head 7 on the installation head 6 is used to install the sleeve, and then the screw is tightened and loosened. When the wrench is used on the railway contact network, the rear of the installation head 6 is opened. A connecting hook 11 is installed through the fixing seat 10. When the wrench is idle, the connecting hook 11 is directly hung on the railway contact network to play a role of temporary placement. At the same time, the safety paddle 14 is pressed under the connecting hook 11 to play a sealing role. The safety paddle 14 is pressed with fingers to rotate it around the spring shaft 13, so that the connecting hook 11 can be removed from the railway contact network. The safety strap can also be connected through the fixing ring 5, and the connecting hook 11 is hung on the railway contact network, so that the torque wrench can be directly used as a safety buckle.

[0024] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A torque wrench, characterized in that: The invention comprises a connecting rod (1), a torque display ring (2) is fixedly mounted on the lower end of the connecting rod (1), a handle bar (3) is fixedly mounted on the lower end of the torque display ring (2), a torque adjustment ring (4) is movably mounted on the lower end of the handle bar (3), a fixing ring (5) is welded to the lower end of the torque adjustment ring (4), a mounting head (6) is welded to the upper end of the connecting rod (1), a ratchet head (7) is movably mounted on the rear end of the mounting head (6), and a switching paddle (8) is movably mounted on the front end of the mounting head (6), The front end of the mounting head (6) is located on both sides of the switching paddle (8) and both sides thereof are threadedly mounted with limit pins (9); both sides of the mounting head (6) are integrally formed with fixing seats (10); the upper end of the fixing seats (10) is integrally formed with a connecting hook (11); a paddle ring (12) is fixedly mounted on the outer top of the connecting rod (1); a spring shaft (13) is movably mounted on the inner side of the paddle ring (12); and a safety paddle (14) is movably mounted on the inner side of the paddle ring (12) via the spring shaft (13).

2. A torque wrench according to claim 1, characterized in that: The connecting rod (1), the torque display ring (2), the handle rod (3) and the torque adjustment ring (4) are arranged vertically, and the outside of the handle rod (3) is wrapped with a rubber sleeve.

3. A torque wrench according to claim 1, characterized in that: The ratchet head (7) and the switching paddle (8) are both inserted into the mounting head (6), the ratchet head (7) and the switching paddle (8) are connected to each other, and the switching paddle (8) is fitted and connected to the limiting pin (9).

4. A torque wrench according to claim 1, characterized in that: The side surface of the connecting hook (11) is designed to be an L-shaped structure, and the connecting hook (11) is located in front of the mounting head (6) and the switching paddle (8).

5. A torque wrench according to claim 1, characterized in that: The safety paddle (14) is located in front of the connecting rod (1), and the paddle ring (12) is located below the mounting head (6).

6. A torque wrench according to claim 1, characterized in that: The paddle ring (12) rotates around the spring shaft (13), a slot is provided on the top of the safety paddle (14), and the safety paddle (14) is connected to the bottom of the connecting hook (11) by using the slot.

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