Interlocking device for high-voltage equipment box of motor train unit and high-voltage equipment box for motor train unit

Abstract

The utility model relates to an interlocking device for a high-voltage equipment box of a motor train unit and the high-voltage equipment box for the motor train unit. The interlocking device comprises a locking assembly and a locking device, wherein the locking assembly is arranged on the high-voltage equipment box and used for controlling the first box body door to be opened and closed, and the locking device is arranged on the high-voltage equipment box and used for locking and unlocking the locking assembly. According to the interlocking device provided by the utility model, when the first box body door is opened, the handle cannot rotate; and after the first box body door is closed and locked, the handle cannot rotate, so that the locking safety of the first box body door is effectively ensured, important electrical parts in the high-voltage equipment box are protected, and the high-voltage equipment box can work safely and stably in the driving process.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicle safety protection devices, in particular to an interlocking device for a high-voltage equipment box of a motor vehicle group and a high-voltage equipment box for the motor vehicle group. Background Art

[0002] The high-voltage equipment box integrates high-voltage electrical components such as vacuum circuit breakers, lightning arresters, current transformers, high-voltage voltage transformers, high-voltage disconnectors, cable connectors, etc. As key electrical components of EMUs, the requirements for protection safety are extremely strict. It is very important to ensure that the first box door is locked and not closed at will when it is open. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides an interlocking device for a high-voltage equipment box of an EMU, comprising a locking assembly arranged on the high-voltage equipment box for controlling the opening and closing of a first box door and a locking device arranged on the high-voltage equipment box for locking and unlocking the locking assembly;

[0004] The locking assembly comprises a rotating mechanism, a first rod member and a second rod member driven by the rotating mechanism to perform horizontal movement; a locking pin is provided on the second rod member;

[0005] A U-shaped groove for cooperating with a locking pin is provided on one side of the first cabinet door close to the locking assembly;

[0006] The locking device is provided with a locking pin for cooperating with the locking groove on the first rod.

[0007] Based on the above solution, the locking assembly further includes a stopping device for preventing the second rod from moving in a horizontal direction when the first box door is opened.

[0008] Based on the above solution, the stop device includes a stop box body fixed on the wall of the high-voltage equipment box

[0009] The stop box is provided with a fixing frame and a stopper; the fixing frame is provided with a spring pin for use with the stopper;

[0010] The second rod passes through two side walls of the stop box at a side away from the locking pin and is fixedly connected to the stopper.

[0011] On the basis of the above solution, a nylon guide seat is respectively provided on the two side walls through which the second rod passes.

[0012] Based on the above scheme, the rotating mechanism includes a handle arranged outside the high-voltage equipment box, a rotating part fixedly connected to the handle, a connecting seat fixed on the second rod and axially connected to the rotating part, and a fixing plate whose two ends are respectively fixedly connected to the first rod and the connecting seat.

[0013] Based on the above solution, a hole for the U-shaped groove to pass through is provided on the wall of the high-voltage equipment box.

[0014] Based on the above solution, a guide groove for guiding the locking pin is provided on the wall of the high-voltage equipment box.

[0015] The present application also provides a high-voltage equipment box for an EMU, and the above-mentioned interlocking device is arranged on the box body of the high-voltage equipment box.

[0016] The interlocking device of the utility model can ensure that the handle cannot rotate when the first box door is open; after the first box door is closed and locked, the handle cannot rotate either, which effectively ensures the locking safety of the first box door, protects important electrical components inside the high-voltage equipment box, and enables it to work safely and stably during driving.

[0017] The use of the nylon guide seat and the guide groove can effectively solve the problem of jamming caused by the large friction coefficient when the second rod contacts other metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the medium and high voltage equipment box of the utility model;

[0019] Figure 2 This is a structural schematic diagram of one side of the medium and high voltage equipment box of the utility model equipped with an interlocking device;

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0021] Figure 4 It is a structural schematic diagram of the interlocking device of the utility model in a closed state;

[0022] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part B;

[0023] Figure 6 It is a structural schematic diagram of the interlocking device of the utility model in the open state. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be pointed out that the embodiments described below are intended to facilitate the understanding of the present invention and do not have any limiting effect on the present invention.

[0025] like Figure 1 and Figure 2 As shown, the utility model provides an interlocking device for a high-voltage equipment box of an EMU, comprising a locking assembly 2 arranged on a high-voltage equipment box 1 for controlling the opening and closing of a first box door 1-1 and a locking device 3 arranged on the high-voltage equipment box 1 for locking and unlocking the locking assembly 2;

[0026] like Figure 2 As shown, the locking assembly 2 includes a rotating mechanism 2-1, a first rod 2-3 and a second rod 2-4 driven by the rotating mechanism 2-1 to move in a horizontal direction; a locking pin 2-5 is provided on the second rod 2-4;

[0027] A U-shaped groove 1-11 for cooperating with a locking pin 2-5 is provided on the side of the first box door 1-1 close to the locking assembly 2; the first box door 1-1 is rotatably connected to the outer wall of the high-voltage equipment box 1 on the side away from the locking assembly 2.

[0028] like Figure 4 and Figure 5 As shown, the locking device 3 is provided with a locking pin 3-2 for cooperating with the locking groove 2-31 on the first rod 2-3. Figure 4 The lock pin 3-2 is inserted into the lock slot 2-31. At this time, the first rod 2-3 cannot move horizontally; Figure 6 This is the state where the lock pin 3-2 is not inserted into the lock slot 2-31. At this time, the first rod 2-3 can move horizontally; the insertion and extraction of the lock pin 3-2 into and out of the lock slot 2-31 is controlled by the key 3-1. The lock device 3 is an existing product purchased from outside, and its internal structure does not belong to the innovation of this application and will not be described in detail here.

[0029] like Figure 2 As shown, the locking assembly 2 further includes a stopping device 2-2 for preventing the second rod 2-4 from moving in the horizontal direction when the first cabinet door 1-1 is opened.

[0030] As a specific implementation scheme, Figure 4 and Figure 6 As shown, the stopping device 2-2 comprises a stopping box body 2-21 fixed on the wall of the high-voltage equipment box 1;

[0031] The stop box 2-21 is provided with a fixing frame 2-24 and a stopper 2-22; the fixing frame 2-24 is provided with a spring pin 2-23 for use with the stopper 2-22;

[0032] The second rod 2-4 passes through the two side walls of the stop box 2-21 on the side away from the locking pin 2-5 and is fixedly connected to the stop member 2-22.

[0033] The second rod 2-4 and the wall of the stop box 2-21 are both metal parts. When the second rod 2-4 moves, friction will occur between the two. In order to solve this technical problem, Figure 4 and Figure 6 As shown, the stop box 2-21 is provided with a nylon guide seat 2-25 on each of the two side walls through which the second rod 2-4 passes.

[0034] As a specific implementation scheme, Figure 1 , Figure 2 and Figure 3 As shown, the rotating mechanism 2-1 includes a handle 2-11 disposed outside the high-voltage equipment box 1, a rotating member 2-13 fixedly connected to the handle 2-11, a connecting seat 2-14 fixed to the second rod 2-4 and axially connected to the rotating member 2-13, and a fixing plate 2-15 with two ends respectively fixedly connected to the first rod 2-3 and the connecting seat 2-14. The handle 2-11 and the rotating member 2-13 are fixed to the wall of the high-voltage equipment box 1 through the mounting seat 2-12.

[0035] Specifically, when using Figure 4 As shown, in the locked state, the locking pin 2-5 is inserted into the U-shaped groove 1-11, at this time, the first box door 1-1 cannot be opened, and the handle 2-11 cannot be rotated at will. At the same time, the stopper 2-22 abuts against the left side wall of the stop box 2-21, and the spring pin 2-23 extends and clamps the stopper 2-22 between the spring pin 2-23 and the left side wall of the stop box 2-21, thereby preventing the handle 2-11 from rotating at will.

[0036] like Figure 6 As shown, when the first box door 1-1 needs to be opened, the key 3-1 is used to release the control of the locking pin 3-2 on the first rod 2-3, and then the handle 2-11 is turned. At this time, the handle 2-11 drives the rotating member 2-13 to rotate, and the rotating member 2-13 drives the connecting seat 2-14 to move horizontally. At this time, since the connecting seat 2-14 is fixedly connected to the second rod 2-4, the second rod 2-4 moves to the right, and the locking pin 2-5 disengages from the U-shaped groove 1-11. When the second rod 2-4 moves to the right, the stopper 2-22 moves along with it. When the stopper 2-22 moves to the right, the spring of the spring pin 2-23 is compressed. When the stopper 2-22 abuts against the right side wall of the stop box 2-21, the movement of the second rod 2-4 stops. At this time, the spring pin 2-23 extends out and clamps the stopper 2-22 between the spring pin 2-23 and the right side wall of the stop box 2-21, and the handle 2-11 cannot be rotated at will.

[0037] like Figure 1 and Figure 2As shown, a hole 1-2 for the U-shaped groove 1-11 to pass through is provided on the wall of the high-voltage equipment box 1. When the first box door 1-1 is closed, the U-shaped groove 1-11 passes through the hole 1-2.

[0038] In order to make the locking pin 2-5 smoothly inserted into and removed from the U-shaped groove 1-11, a guide groove 2-6 for guiding the locking pin 2-5 is provided on the wall of the high-voltage equipment box 1, and the guide groove 2-6 can be made of nylon.

[0039] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An interlocking device for a high-voltage equipment box of a train, characterized in that: It comprises a locking assembly (2) arranged on a high-voltage equipment box (1) for controlling the opening and closing of a first box door (1-1) and a locking device (3) arranged on the high-voltage equipment box (1) for locking and unlocking the locking assembly (2); The locking assembly (2) comprises a rotating mechanism (2-1), a first rod (2-3) and a second rod (2-4) driven by the rotating mechanism (2-1) to perform horizontal movement; a locking pin (2-5) is provided on the second rod (2-4); A U-shaped groove (1-11) for cooperating with a locking pin (2-5) is provided on one side of the first cabinet door (1-1) close to the locking assembly (2); The lock device (3) is provided with a lock pin (3-2) for use in conjunction with a lock slot (2-31) on the first rod (2-3).

2. The interlocking device for the high-voltage equipment box of a train set according to claim 1, characterized in that: The locking assembly (2) also includes a stopping device (2-2) for preventing the second rod (2-4) from moving in a horizontal direction when the first box door (1-1) is opened.

3. The interlocking device for the high-voltage equipment box of a train set according to claim 2, characterized in that: The stopping device (2-2) comprises a stopping box body (2-21) fixed on the wall of the high-voltage equipment box (1); A fixing frame (2-24) and a stopper (2-22) are arranged in the stop box (2-21); a spring pin (2-23) for use in conjunction with the stopper (2-22) is arranged on the fixing frame (2-24); The second rod (2-4) passes through two side walls of the stop box (2-21) on the side away from the locking pin (2-5) and is fixedly connected to the stopper (2-22).

4. The interlocking device for the high-voltage equipment box of a train set according to claim 3, characterized in that: The stop box (2-21) is provided with a nylon guide seat (2-25) on each of the two side walls through which the second rod (2-4) passes.

5. The interlocking device for the high-voltage equipment box of a train set according to claim 1, characterized in that: The rotating mechanism (2-1) comprises a handle (2-11) arranged outside the high-voltage equipment box (1), a rotating member (2-13) fixedly connected to the handle (2-11), a connecting seat (2-14) fixed to the second rod (2-4) and axially connected to the rotating member (2-13), and a fixing plate (2-15) having two ends respectively fixedly connected to the first rod (2-3) and the connecting seat (2-14).

6. The interlocking device for the high-voltage equipment box of a train set according to claim 1, characterized in that: A hole (1-2) for the U-shaped groove (1-11) to pass through is provided on the wall of the high-voltage equipment box (1).

7. The interlocking device for the high-voltage equipment box of a train set according to claim 6, characterized in that: A guide groove (2-6) for guiding the locking pin (2-5) is arranged on the wall of the high-voltage equipment box (1).

8. A high-voltage equipment box for a train set, characterized in that: The interlocking device according to any one of claims 1 to 7 is arranged on the box body of the high-voltage equipment box.

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