Torque applying auxiliary tool for motor train unit axle box end cover grounding wire

Abstract

The utility model relates to a motor train unit axle box end cover grounding wire striking torque auxiliary tool, which belongs to the technical field of high-speed train unit maintenance operation and comprises a tool base, an axle box end cover is placed on the top of the tool base, and three positioning blocks are uniformly distributed on the outer side of the axle box end cover. A groove matched with an axle box end cover lug in size is formed in the upper side of the positioning block. According to the motor train unit axle box end cover grounding wire torque applying auxiliary tool, the size of the positioning block groove is matched with the size of the axle box end cover lug, effective positioning of the axle box end cover can be achieved, the movement amount of the axle box can be reduced, the positioning precision of the axle box end cover is improved, torque applying by an operator is facilitated, and the working efficiency is improved. A part can be effectively pressed from the upper end of the axle box end cover through the fixing clamp, fixing of remaining unidirectional freedom degrees is achieved, horizontal positioning of the axle box end cover is guaranteed, fixing of the axle box end cover can be better adapted, the blank in the field is filled, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of high-speed EMU maintenance operations, and particularly relates to an auxiliary tool for applying torque to the grounding wire of the axle box end cover of an EMU. Background Art

[0002] The axle box end cover is a component connecting the axle box cover and the end cover. Its main functions are to fix the axle box cover and the end cover, and at the same time play a role in sealing and protection to ensure the normal operation of machinery and equipment. At present, when applying torque to the grounding wire of the axle box end cover of an EMU, it is carried out manually without the aid of a tool. During the operation of applying torque, the operator stands the axle box end cover upright, holds the end cover tightly with the left hand, and applies torque with the right hand, or presses the axle box end cover onto the table with the left hand and then applies torque with the right hand. The operation of the operator is extremely inconvenient during the operation process. Not only is the operation process inefficient, but there is also a risk of personnel scratching during the torque application process.

[0003] The main reason for the current problem is that the overall structure of the axle box end cover of an EMU is a hemispherical structure. The hemispherical structure itself is not easy to fix. When applying torque, the axle box end cover is prone to rotation or sliding, and even tipping over when the force is unbalanced. It is not easy for personnel to fix it by relying on their own strength and needs to be assisted by an external tool for positioning. In addition, the grounding wire is fixed inside the hemispherical structure, and the grounding wire bolt is hidden inside the hemispherical shape, resulting in limited space for applying torque and increasing the difficulty of applying torque.

[0004] There is currently no special positioning tool for the axle box end cover of an EMU, and the adaptability of the existing external tool for auxiliary positioning is poor, resulting in inconvenient maintenance. Therefore, an auxiliary tool for applying torque to the grounding wire of the axle box end cover of an EMU is proposed to solve the problems mentioned above. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides an auxiliary tool for applying torque to the grounding wire of the axle box end cover of an EMU, which can effectively position and fix the axle box end cover, facilitate the operator to apply torque to the grounding wire bolt, and solve the problem of poor adaptability of the existing external tool for auxiliary positioning, resulting in inconvenient maintenance.

[0006] To achieve the above object, the utility model provides the following technical solution: an auxiliary tool for applying torque to the grounding wire of the axle box end cover of an EMU, including a tooling base, an axle box end cover is placed on the top of the tooling base, three positioning blocks are evenly arranged on the outer side of the axle box end cover, a groove adapted to the size of the ear of the axle box end cover is opened on the upper side of the positioning block, brackets are arranged on the outer sides of the three positioning blocks, and fixing clamps are installed on the upper sides of the three brackets.

[0007] Furthermore, a hemispherical groove adapted to the axle box end cover is provided inside the tooling base, and the positioning block is fixedly installed on the top of the tooling base by bolts.

[0008] Furthermore, the bracket is in an L shape. One side of the bracket is connected to the outer wall of the positioning block by screws, and the other side of the bracket is connected to the base of the fixing fixture by bolts.

[0009] Furthermore, the fixing fixture is a horizontal clamp, and the chuck of the fixing fixture cooperates with the upper end of the ear of the axle box end cover.

[0010] Compared with the prior art, the present utility model provides an auxiliary tool for applying the tightening torque of the grounding wire of the axle box end cover of a multiple unit train, having the following beneficial effects:

[0011] 1. By using the tooling base, the positioning block and the fixing fixture in cooperation, the auxiliary tool for applying the tightening torque of the grounding wire of the axle box end cover of a multiple unit train can effectively position and fix the axle box end cover. Since the size of the groove of the positioning block is adapted to the ear of the axle box end cover, it can not only effectively position the axle box end cover, but also reduce the movement of the axle box, improve the positioning accuracy of the axle box end cover, facilitate the operator to apply the torque, and can effectively press the component from the upper end of the axle box end cover through the fixing fixture to fix the remaining single-degree-of-freedom, ensure the horizontal positioning of the axle box end cover, better adapt to the fixing of the axle box end cover, fill the blank in this field, and has strong practicability.

[0012] 2. The fixing fixture and the positioning block of the auxiliary tool for applying the tightening torque of the grounding wire of the axle box end cover of a multiple unit train are detachably installed through the bracket. When the fixing fixture is damaged after long-term use, it can be quickly replaced, and the maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic diagram of the cooperation between the positioning block and the axle box end cover of the present utility model.

[0015] In the figure: 1. Tooling base; 2. Positioning block; 3. Fixing fixture; 4. Axle box end cover; 5. Bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1 to 2 In this embodiment, an auxiliary tool for applying the tightening torque of the grounding wire of the axle box end cover of a multiple unit train includes a tooling base 1. An axle box end cover 4 is placed on the top of the tooling base 1. Three positioning blocks 2 are evenly arranged on the outer side of the axle box end cover 4. A groove adapted to the size of the ear of the axle box end cover 4 is provided on the upper side of the positioning block 2. Three brackets 5 are arranged on the outer sides of the three positioning blocks 2, and fixing clamps 3 are installed on the upper sides of the three brackets 5.

[0018] Among them, a hemispherical groove adapted to the axle box end cover 4 is provided inside the tooling base 1. The positioning block 2 is fixedly installed on the top of the tooling base 1 by bolts. The outer shape of the bracket 5 is L-shaped. One side of the bracket 5 is connected to the outer wall of the positioning block 2 by screws, and the other side of the bracket 5 is connected to the base of the fixing clamp 3 by bolts. The chuck of the fixing clamp 3 cooperates with the upper end of the ear of the axle box end cover 4.

[0019] It should be noted that the fixing clamp 3 is a horizontal clamp. Refer to the horizontal clamp disclosed in the design patent CN3184717D.

[0020] The working principle of the above embodiment is as follows:

[0021] When the utility model is in use, the tooling base 1 is fixedly installed on the workbench by bolts. The three positioning blocks 2 are evenly arranged and installed along the upper side of the tooling base 1. The axle box end cover 4 is placed between the three positioning blocks 2, and the ears on the side of the axle box end cover 4 correspond to the grooves on the upper side of the positioning blocks 2. Subsequently, the upper end of the axle box end cover 4 is tightened by using the fixing clamp 3 to ensure the horizontal positioning of the axle box end cover 4, and the fixing effect is good.

[0022] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented. It should be noted that in this article, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application 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 cannot be understood as a limitation to the present application.

[0023] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0024] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary tool for applying torque to the grounding wire of the axle box end cover of a multiple unit train, characterized in that: It includes a tooling base (1), on the top of the tooling base (1) is placed a journal box end cover (4), three positioning blocks (2) are evenly arranged on the outer side of the journal box end cover (4), a groove adapted to the size of the ear of the journal box end cover (4) is opened on the upper side of the positioning block (2), brackets (5) are arranged on the outer sides of the three positioning blocks (2), and fixing jigs (3) are installed on the upper sides of the three brackets (5).

2. The torque application assistance tooling for the grounding wire of the axle box end cover of the multiple unit train according to claim 1, characterized in that: A hemispherical groove adapted to the journal box end cover (4) is opened on the inner side of the tooling base (1), and the positioning block (2) is fixedly installed on the top of the tooling base (1) by bolts.

3. An auxiliary tool for applying torque to the grounding wire of the axle box end cover of a multiple unit train according to claim 1, characterized in that: The bracket (5) is in an L shape, one side of the bracket (5) is connected to the outer wall of the positioning block (2) by screws, and the other side of the bracket (5) is connected to the base of the fixing jig (3) by bolts.

4. An auxiliary tool for applying torque to the grounding wire of the axle box end cover of a multiple unit train according to claim 1, characterized in that: The fixing jig (3) is a horizontal clamp, and the chuck of the fixing jig (3) cooperates with the upper end of the ear of the journal box end cover (4).

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