Wrench special for motor train unit height adjusting valve connector and using method thereof

Abstract

The invention discloses a motor train unit height adjusting valve connector special wrench and a using method thereof.The motor train unit height adjusting valve connector special wrench comprises a handle, one end of the handle is connected with a wrench head through a turning body, the handle is parallel to the wrench head, and an opening of the wrench head faces the other end of the handle; the other end of the handle is provided with a switching body used for being connected with a torque wrench, and the opening of the wrench head can be connected to the switching body of the torque calibrator in a clamped mode. According to the design, the reverse opening of the wrench can be used for simply and smoothly clamping and disassembling from the upper part of the height adjusting valve joint, even though the space between the upper part of the joint and a vehicle body is small, the wrench is not hindered for disassembling or assembling, and the wrench can enable the opening to be clamped from the upper part of the joint and the handle to be disassembled or assembled from the lower part of the joint.

Description

Technical Field

[0001] The invention relates to an intercity rail vehicle assembly and maintenance auxiliary device, in particular to a special wrench for a joint of a motor vehicle unit height adjustment valve. Background Art

[0002] When the height adjustment valve joint of an intercity rail vehicle leaks, it needs to be disassembled or installed. However, due to the limited working space of the rail vehicle, normal wrenches and other tools cannot be used flexibly. The upper part of some joint fasteners even has only about 100mm of space with the vehicle body, and the lower part cannot be disassembled from the lower part due to the structural reasons of the components. It is difficult to disassemble without disassembling the bogie or special tools are required for disassembly. For example, the handle of a commonly used adjustable wrench is cut to less than 100mm for disassembly, and fixed torque tightening cannot be performed. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a special wrench for a height adjustment valve joint of a motor vehicle unit that is easy to use and a method for using the same.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A special wrench for a height adjustment valve joint of an EMU comprises a handle, one end of the handle is connected to a wrench head via a turning body, the handle and the wrench head are parallel to each other, the opening of the wrench head faces the other end of the handle, the other end of the handle is provided with an adapter for connecting a torque wrench, and the opening of the wrench head can be clamped on the adapter of a torque tester.

[0006] According to some embodiments of the present invention, the distance between the handle and the wrench head is 8-12 mm.

[0007] According to some embodiments of the present invention, an extension sleeve rod may be sleeved on the outside of the handle.

[0008] According to some embodiments of the present invention, the extended sleeve rod is a circular sleeve.

[0009] According to some embodiments of the present invention, the opening of the wrench head is an opening of a fixed size for screwing a nut.

[0010] According to some embodiments of the present invention, the opening size of the wrench head is 17 mm.

[0011] According to some embodiments of the present invention, the adapter is a cuboid inserted into the torque wrench.

[0012] According to some embodiments of the present invention, the handle is fixed to the wrench head by welding through a turning body.

[0013] According to some embodiments of the present invention, the torque calibrator adapter is composed of a bolt head and a fixing column. The fixing column is a rectangular parallelepiped, and a telescopic marble for limiting clamping is embedded in one side of the column.

[0014] A method for using a special wrench for a height adjustment valve joint of a train unit, comprising the following steps:

[0015] Step 1), insert the adapter at one end of the wrench into the torque wrench, insert the matching torque tester adapter into the torque tester, insert the opening of the wrench head into the bolt head on the torque tester adapter, and use uniform force to bend the torque wrench so that the torque value on the torque tester is displayed as 25N·m;

[0016] Step 2), insert the opening of the wrench head downward from the upper part of the height adjustment valve joint, and insert the extended sleeve rod 6 into the handle 1 to disassemble or tighten the joint;

[0017] Step 3), when tightening, insert the adapter at one end of the wrench into the torque wrench, use the torque wrench to apply a torque of 25N·m for tightening, and when the torque wrench is turned and a clear click is heard, it means that the required torque has been applied.

[0018] The present invention has at least the following beneficial effects: the design utilizes the reverse opening of the wrench to simply and smoothly engage in positioning and disassembly from the upper portion of the height adjustment valve joint; although the space between the upper portion of the joint and the vehicle body is small, it does not hinder the use of the wrench for disassembly or installation; the wrench enables the opening to be engaged from the upper portion of the joint, and the handle to be disassembled or installed from the lower portion of the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 It is a schematic diagram of the wrench structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the installation of the present invention in use. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Reference Figure 1 A special wrench for the height adjustment valve joint of a train unit includes a handle 1, one end of the handle 1 is connected to a wrench head 2 through a turning body 3. In order to ensure the firmness of the product, the handle 1 is welded and fixed to the wrench head 2 through the turning body 3. The handle 1 and the wrench head 2 are parallel to each other, and the opening of the wrench head 2 faces the other end of the handle 1, that is, the wrench head 2 is reversely installed. The distance between the handle 1 and the wrench head 2 is 8 to 12 mm, and the optimal distance is 10 mm. The reverse installation of the wrench head 2 can avoid interference at one end of the handle that is too long and cannot perform disassembly and tightening operations. If there is interference from the upper side, it can be adjusted to the lower side for operation, which can smoothly avoid the limited working space at the interference end.

[0027] The opening of the wrench head 2 is a common and commonly used fixed-size opening for screwing a nut, and the size is 17 mm.

[0028] Reference Figure 2 The other end of the handle 1 is provided with an adapter 4 for connecting the torque wrench. The adapter 4 is a rectangular parallelepiped inserted into the torque wrench, and its dimensions are 23 mm in length, 12 mm in width, and 8 mm in thickness.

[0029] The opening of the wrench head 2 can be clamped on the torque tester adapter 5. The torque tester adapter 5 is composed of an M10 bolt head 51 and a 20mm long fixing column 52. The fixing column is a rectangular parallelepiped with a width of 13mm, and a telescopic marble 53 with a diameter of 5mm is embedded in one side for limiting clamping.

[0030] The handle 1 is 85 mm long. For ease of use, an extended sleeve rod 6 can be used to insert into the handle 1 for tightening or disassembly. The extended sleeve rod 6 is a round sleeve with a length of 158 mm and a thickness of 1.5 mm.

[0031] A method for using a special wrench for a height adjustment valve joint of a train unit, comprising the following steps:

[0032] Step 1), insert the adapter 4 at one end of the wrench into the torque wrench, insert the matching torque tester adapter 5 into the torque tester, insert the opening of the wrench head 2 into the bolt head 51 on the torque tester adapter 5, and use a uniform force to bend the torque wrench so that the torque value on the torque tester is displayed as 25N·m;

[0033] Step 2), insert the opening of the wrench head 2 downward from the upper part of the height adjustment valve joint, and insert the extended sleeve rod 6 into the handle 1 to disassemble or tighten the joint;

[0034] Step 3), when tightening, insert the adapter 4 at one end of the wrench into the torque wrench, use the torque wrench to apply a torque of 25N·m for tightening, and a clear click sound can be heard when the torque wrench is turned, indicating that the required torque has been applied.

[0035] The design utilizes the reverse opening of the wrench to simply and smoothly engage in positioning and disassembly from the upper portion of the height adjustment valve joint. Although the space between the upper portion of the joint and the vehicle body is small, it does not hinder the use of the wrench for disassembly or installation. The wrench enables the opening to engage in positioning from the upper portion of the joint, and the handle to disassemble or install from the lower portion of the joint.

[0036] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A special wrench for the joint of the height adjustment valve of a train unit, characterized in that: The invention comprises a handle (1), one end of the handle (1) is connected to a wrench head (2) via a turning body (3), the handle (1) and the wrench head (2) are parallel to each other, the opening of the wrench head (2) faces the other end of the handle (1), the other end of the handle (1) is provided with an adapter body (4) for connecting a torque wrench, and the opening of the wrench head (2) can be snap-connected to an adapter body (5) of a torque tester.

2. A special wrench for the joint of the EMU height adjustment valve according to claim 1, characterized in that: The distance between the handle (1) and the wrench head (2) is 8 to 12 mm.

3. The special wrench for the joint of the EMU height adjustment valve according to claim 1, characterized in that: The handle (1) can be sleeved with an extended sleeve rod (6).

4. A special wrench for the joint of the EMU height adjustment valve according to claim 3, characterized in that: The extended sleeve rod (6) is a circular sleeve.

5. The special wrench for the joint of the EMU height adjustment valve according to claim 1, characterized in that: The opening of the wrench head (2) is an opening of fixed size for screwing a nut.

6. A special wrench for the joint of the EMU height adjustment valve according to claim 5, characterized in that: The opening size of the wrench head (2) is 17 mm.

7. The special wrench for the joint of the EMU height adjustment valve according to claim 1, characterized in that: The adapter (4) is a rectangular parallelepiped plugged into the torque wrench.

8. The special wrench for the joint of the EMU height adjustment valve according to claim 1, characterized in that: The handle (1) is fixed to the wrench head (2) by welding via a turning body (3).

9. The special wrench for the joint of the EMU height adjustment valve according to claim 1, characterized in that: The torque tester adapter (5) is composed of a bolt head (51) and a fixing column (52). The fixing column (52) is a rectangular parallelepiped, and a telescopic marble (53) for limiting and clamping is embedded in one side of the fixing column.

10. A method of using the special wrench for the joint of the EMU height adjustment valve according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1), insert the adapter (4) at one end of the wrench into the torque wrench, insert the matching torque tester adapter (5) into the torque tester, insert the opening of the wrench head (2) into the bolt head (51) on the torque tester adapter (5), and use a uniform force to bend the torque wrench so that the torque value on the torque tester is displayed as 25N·m; Step 2), insert the opening of the wrench head (2) downward from the upper part of the height adjustment valve joint, and insert the extended sleeve rod (6) into the handle (1) to disassemble or tighten the joint; Step 3), when tightening, insert the adapter (4) at one end of the wrench into the torque wrench, use the torque wrench to apply a torque of 25N·m for tightening, and when the torque wrench is turned and a clear click sound is heard, it indicates that the required torque has been applied.

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