Wrench special for HXD2 type electric locomotive double heading plug

Abstract

The utility model discloses a special wrench for a double heading plug of an HXD2 type electric locomotive, which comprises a wrench used for being clamped with an outer ferrule of the double heading plug, and further comprises a wrench handle used for holding hands, a bending part is arranged on the wrench, the head part of the wrench is in a semi-ring shape, and the outer ferrule of the double heading plug is fixedly connected with the wrench handle. Protruding parts used for being clamped with grooves in an outer ferrule of the reconnection plug are evenly arranged on the inner side of the wrench head, the wrench tail is rotationally connected with the wrench handle through a pin shaft, an angle locking assembly is further arranged between the wrench and the wrench handle and comprises a pull rod, a first set screw and a second set screw, and the pull rod is connected with the wrench tail through a pin shaft. One end of the pull rod is connected with the side portion of the wrench handle through the first set screw, and the other end of the pull rod is connected with the tail portion of the wrench through the second set screw. According to the utility model, the problem that the HXD2 type electric locomotive double heading plug is narrow in space and difficult to exert force when being disassembled can be solved, the locomotive maintenance efficiency can be greatly improved, and meanwhile, part of potential safety hazards can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of mechanical maintenance tools, specifically a special wrench for HXD2 type electric locomotive multiple-unit plug. Background Technology

[0002] In the new stage of rapid development in railway construction, the requirements for locomotive maintenance are also gradually increasing. The HXD2 electric locomotive is an eight-axle locomotive, consisting of two cars (A and B) coupled together. It is a major type of passenger and freight electric locomotive in China's railway system. According to the "HXD2 Locomotive Maintenance Process," advanced maintenance of the HXD2 electric locomotive requires separating cars A and B first. After each car section is stored and its components are inspected, the two cars are coupled together. However, during the separation and coupling of the two cars, the coupling plugs and sockets need to be separated or reconnected. Due to the narrow and congested space between the coupling plugs and sockets, ordinary tools such as belt wrenches, straight wrenches, screwdrivers, and hammers cannot provide sufficient force, causing numerous difficulties for the workers and affecting maintenance efficiency. Insufficient tightening can also lead to ineffective connections between the coupling plugs and sockets, resulting in slight shaking and preventing the high-standard completion of the maintenance task. Meanwhile, when using existing tools to disassemble and assemble the multiple-connection plug, the special structure of the multiple-connection plug may cause damage or even destruction to the outer ring of the multiple-connection plug during the disassembly and assembly process, increasing the cost of locomotive maintenance.

[0003] Therefore, in order to improve locomotive maintenance efficiency and save time and effort, it is now necessary to design and manufacture a special tool for disassembling and assembling the HXD2 type electric locomotive multiple-connection plug, based on the external structural characteristics of the multiple-connection plug. Utility Model Content

[0004] The purpose of this utility model is to provide a special wrench for the HXD2 type electric locomotive multiple-unit plug, so as to solve the problems and defects mentioned in the background art, which are that the existing tools cannot be used to complete the work tasks well due to the narrow installation position and limited working space of the HXD2 type locomotive multiple-unit plug.

[0005] To achieve the above objectives, the following technical solution is provided:

[0006] A special wrench for HXD2 type electric locomotive multiple-unit plug includes a wrench for engaging with the outer ring of the multiple-unit plug, and a handle for gripping and applying force. The wrench has a bent part, the wrench head is semi-circular, and the inner side of the wrench head is evenly provided with protrusions that engage with the grooves on the outer ring of the multiple-unit plug. The tail of the wrench is rotatably connected to the handle by a pin, and an angle locking component is also provided between the wrench and the handle.

[0007] Preferably, the angle locking assembly includes a pull rod, a first set screw, and a second set screw. The pull rod is disposed on the side of the wrench tail and the wrench handle. The first set screw connects one end of the pull rod to the side of the wrench handle, and the second set screw connects the other end of the pull rod to the wrench tail.

[0008] Preferably, both ends of the pull rod are provided with round holes.

[0009] Preferably, the side of the tail of the wrench is provided with a plurality of threaded holes for adjusting the angle between the wrench and the handle.

[0010] Preferably, a cotter pin is inserted at the end of the pin shaft.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1) This utility model adopts a "Z-shaped" design, so that the wrench pliers and the handle are not on the same straight line, which solves the problem of narrow working space, makes operation more convenient and labor-saving, and can greatly improve the efficiency of locomotive multiple-unit plug disassembly and assembly.

[0013] 2) The wrench head of this utility model has a protrusion on the inner side, which can make the wrench firmly engage with the groove on the outer ring of the reconnection plug, making it convenient to use;

[0014] 3) An angle locking component is also provided between the wrench and the handle in this utility model, which can firmly fix the wrench and the handle and prevent them from swinging back and forth during use.

[0015] 4) The wrench head of this utility model is provided with multiple threaded holes on the side, so that the second set screw can be installed in the threaded holes at different positions to adjust the angle between the wrench and the handle. When using it, the operator can choose the appropriate angle according to his own position and angle, making it more convenient to use.

[0016] 5) This utility model has a simple structure, low cost, and high reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a special wrench for HXD2 type electric locomotive multiple-unit plug according to Embodiment 1 of this utility model;

[0018] Figure 2 This is an exploded schematic diagram of a special wrench for the HXD2 type electric locomotive multiple-unit plug according to Embodiment 1 of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of a special wrench for HXD2 type electric locomotive multiple-unit plug according to Embodiment 2 of this utility model;

[0020] Figure 4 This is a schematic diagram of the wrench structure in Embodiment 2 of this utility model;

[0021] Reference numerals: 1. Wrench; 11. Bending part; 12. Protrusion; 2. Handle; 3. Pin; 4. Cotter pin; 5. Pull rod; 6. First set screw; 7. Second set screw; 8. Threaded hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0024] Example 1:

[0025] like Figures 1 to 2 As shown, a special wrench for HXD2 type electric locomotive multiple-unit plug includes a wrench 1 and a handle 2. The wrench 1 is used to engage with the outer ring of the multiple-unit plug, and the handle 2 is used to grip and apply force. The wrench 1 and the handle 2 are rotatably connected by a pin 3. A cotter pin 4 is inserted into the pin 3. An angle locking component is also provided between the wrench 1 and the handle 2. The angle locking component is used to lock the angle between the wrench 1 and the handle 2, so that the handle 2 will not swing arbitrarily during use.

[0026] The wrench 1 is provided with a bending part 11, the head of the wrench 1 is semi-circular, and the inner side of the head of the wrench 1 is evenly provided with protrusions 12 for engaging with the grooves on the outer ring of the reconnection plug.

[0027] The angle locking assembly includes a pull plate 5 connecting the wrench 1 and the handle 2, as well as a first set screw 6 and a second set screw 7. Four threaded holes 8 are evenly arranged on the side of the head of the wrench 1, and one threaded hole 8 is arranged on the side of the handle 2. The pull rod 5 has round holes at both ends. The first set screw 6 connects one end of the pull rod 5 to the handle 2, and the second set screw 7 connects the other end of the pull rod 5 to the wrench 1. In this embodiment, the second set screw 7 can be installed in different threaded holes 8 to adjust the angle between the wrench 1 and the handle 2. When using it, the operator can choose the appropriate angle according to their own position and angle, making it more convenient to use.

[0028] Example 2:

[0029] like Figures 2 to 4 As shown, a special wrench for HXD2 type electric locomotive multiple-unit plug includes a wrench 1 and a handle 2. The wrench 1 is used to engage with the outer ring of the multiple-unit plug, and the handle 2 is used to grip and apply force. The wrench 1 and the handle 2 are rotatably connected by a pin 3. A cotter pin 4 is inserted into the pin 3. An angle locking component is also provided between the wrench 1 and the handle 2. The angle locking component is used to lock the angle between the wrench 1 and the handle 2, so that the handle 2 will not swing arbitrarily during use.

[0030] The wrench 1 is provided with a bending part 11, the head of the wrench 1 is semi-circular, and the inner side of the head of the wrench 1 is evenly provided with protrusions 12 for engaging with the grooves on the outer ring of the reconnection plug.

[0031] The angle locking assembly includes a pull plate 5 connecting the wrench 1 and the handle 2, as well as a first set screw 6 and a second set screw 7. A threaded hole 8 is provided on the side of the wrench 1 and the handle 2 respectively. The pull rod 5 has round holes at both ends. The first set screw 6 connects one end of the pull rod 5 to the handle 2, and the second set screw 7 connects the other end of the pull rod 5 to the wrench 1. After the pull rod 5 locks the wrench 1 and the handle 2, the angle between the wrench 1 and the handle 2 is close to 90°.

[0032] In use, loosen and remove the second set screw 7, align the round hole on lever 5 with the threaded hole 8 on wrench 1, and tighten the second set screw 7. Keep wrench 1 and handle 2 in a fixed position to begin use. Engage the protrusion 12 on the inner side of the head of wrench 1 with the groove on the reconnection plug. The operator holds handle 2 and rotates it to tighten or loosen the reconnection plug. After use, unscrew the second set screw 7, overlap lever 5 and handle 2, re-tighten the second set screw 7 into the threaded hole 8, and then fold wrench 1 and handle 2 for easy storage.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special spanner for HXD2 type electric locomotive heavy coupling plug, characterized in that, The device includes a wrench (1) for engaging with the outer ring of the reconnection plug, and a handle (2) for gripping. The wrench (1) has a bent portion (11), the head of the wrench (1) is semi-circular, and the inner side of the head of the wrench (1) is evenly provided with protrusions (12) that engage with the grooves on the outer ring of the reconnection plug. The tail of the wrench (1) is rotatably connected to the handle (2) by a pin (3). An angle locking component is also provided between the wrench (1) and the handle (2).

2. The special spanner for the HXD2 type electric locomotive recombination plug according to claim 1, characterized in that, The angle locking assembly includes a pull rod (5), a first set screw (6), and a second set screw (7). The first set screw (6) is used to connect one end of the pull rod (5) to the side of the handle (2), and the second set screw (7) is used to connect the other end of the pull rod (5) to the tail of the wrench (1).

3. The special spanner for the HXD2 type electric locomotive recombination plug according to claim 2, characterized in that, Both ends of the pull rod (5) are provided with round holes.

4. The special spanner for the HXD2 type electric locomotive recombination plug according to claim 3, characterized in that, The wrench (1) has several threaded holes (8) evenly arranged on the side of its tail for adjusting the angle between the wrench (1) and the handle (2).

5. The special spanner for the HXD2 type electric locomotive recombination plug according to claim 1, characterized in that, A cotter pin (4) is inserted at the end of the pin (3).

Images