Contact quick change device for direct current contactor

Abstract

The utility model relates to the technical field of direct current contactor, and discloses a contact quick replacement device of direct current contactor, including mounting seat and frame, two movable contact seat are fixedly connected in mounting seat, and the movable contact holder is slidingly connected on movable contact seat, and the movable contact holder top fixedly connected with movable contact, the fixed plate is fixedly connected with reciprocating cylinder in frame top edge department both sides, and reciprocating cylinder output is fixedly connected with the link plate, and the link plate board wall one side is embedded with two flow guide tubes, and the flow guide tube wall is fixedly connected with semicircle snap ring, and the water storage tank is fixedly connected in the middle part of frame, and the water storage tank top middle part is fixedly connected with double shaft water pump, and the elastic water guide pipe that links to in the flow guide tube is fixedly connected with double shaft water pump output, the utility model discloses double shaft water pump drive cooling water circulation in water storage tank and flow through flow guide tube, and the movable contact is cooled quickly, avoids scalding and thermal stress deformation when disassembling, and promotes assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of DC contactor technology, specifically to a quick contact replacement device for DC contactors. Background Technology

[0002] A DC contactor is a switching device used to connect or disconnect DC circuits. It drives the contacts through an electromagnetic system to control and protect DC loads (such as motors, energy storage devices, and transmission lines). Its core function is to reliably connect and disconnect circuits under rated voltage and current conditions, and to extinguish the arc when disconnecting to prevent damage to electrical equipment. It contains stationary contacts and moving contacts.

[0003] During the operation of a DC contactor, when the moving contact is damaged, a large amount of heat will be generated due to poor contact. If it is disassembled directly without sufficient cooling, there is not only a risk of burns, but it may also cause the contact material to deform due to thermal stress, affecting the accuracy of subsequent assembly. Furthermore, waiting for it to cool naturally will significantly extend the maintenance time and reduce the operating efficiency of the equipment. Therefore, we propose a quick contact replacement device for DC contactors. Utility Model Content

[0004] The purpose of this invention is to provide a quick contact replacement device for DC contactors to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick contact replacement device for a DC contactor, comprising a mounting base and a frame, wherein two movable contact seats are fixedly connected inside the mounting base, a movable contact frame is slidably engaged on the movable contact seat, and a movable contact is fixedly connected to the top of the movable contact frame; A fixing plate is fixedly connected to the top edge of the frame. Reciprocating cylinders are fixedly connected to both sides of the fixing plate. A connecting plate is fixedly connected to the output end of the reciprocating cylinder. Two guide pipes are embedded on one side of the connecting plate. A semi-circular retaining ring is fixedly connected between the walls of the guide pipes. A water storage tank is fixedly connected to the middle of the frame. A dual-shaft water pump is fixedly connected to the top middle of the water storage tank. An elastic water guide pipe connected to the guide pipe is fixedly connected to the output end of the dual-shaft water pump, and the other end of the elastic water guide pipe is connected to the water storage tank.

[0006] Preferably, the top of each movable contact seat is provided with a slot that matches the bottom of the movable contact frame.

[0007] Preferably, the top and bottom of the water storage tank are respectively equipped with an inlet pipe and an outlet pipe, and the frame is located on both sides of the water storage tank to form a first storage groove and a second storage groove.

[0008] Preferably, an L-shaped handle is fixedly connected to the wall of the fixed plate rod.

[0009] Preferably, the guide pipe is provided with a circulating water flow pipe inside, and the guide pipe is made of a metal conductor material.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the reciprocating cylinder on the frame drives the connecting plate and the guide pipe to move, the semi-circular retaining ring is used to lock the movable contact, and the cooling water in the water tank is driven by the dual-shaft water pump to circulate through the guide pipe to quickly cool the movable contact, avoid scalding and thermal stress deformation during disassembly, and improve assembly efficiency; the double storage slots can store new and old contacts separately, which is convenient for management. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of the movable contact seat and the movable contact of this utility model; Figure 3 This is a schematic cross-sectional view of the overall frame structure of this utility model; Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0012] In the diagram: 1. Mounting base; 101. Slot; 11. Movable contact seat; 12. Movable contact bracket; 13. Movable contact; 2. Frame; 201. First storage slot; 202. Second storage slot; 21. Fixing plate; 22. Reciprocating cylinder; 23. Connecting plate; 24. Guide pipe; 25. Semi-circular retaining ring; 26. Handle; 3. Water storage tank; 31. Dual-shaft water pump; 32. Flexible water guide pipe. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 The present invention provides the following technical solution: Example 1: A quick contact replacement device for a DC contactor includes a mounting base 1 and a frame 2. Two movable contact seats 11 are fixedly connected inside the mounting base 1. Movable contact frames 12 are slidably engaged on the movable contact seats 11. Movable contacts 13 are fixedly connected to the top of the movable contact frames 12. The top of each movable contact seat 11 is provided with a slot 101 that matches the bottom of the movable contact frame 12.

[0015] In use, first align the bottom end of the movable contact frame 12 with the slot 101 at the top of the movable contact base 11, and slide it downwards in the vertical direction to engage, so that the movable contact frame 12 and the movable contact base 11 fit tightly together. At this time, the movable contact 13 is located in the preset conductive circuit.

[0016] Example 2: The technical solution of this example, which differs from Example 1, includes: a fixed plate 21 is fixedly connected to the top edge of the frame 2; reciprocating cylinders 22 are fixedly connected to both sides of the fixed plate 21; a connecting plate 23 is fixedly connected to the output end of the reciprocating cylinders 22; two guide pipes 24 are embedded on one side of the connecting plate 23; semi-circular retaining rings 25 are fixedly connected between the walls of the guide pipes 24; a water storage tank 3 is fixedly connected to the middle of the frame 2; a dual-shaft water pump 31 is fixedly connected to the top center of the water storage tank 3; and a connection to the guide pipes 24 is fixedly connected to the output end of the dual-shaft water pump 31. The flexible water guide pipe 32 is located inside the pipe 24, and the other end of the flexible water guide pipe 32 is connected to the water storage tank 3. The top and bottom of the water storage tank 3 are respectively embedded with an inlet pipe and an outlet pipe. The frame 2 is located on both sides of the water storage tank 3 and forms a first storage groove 201 and a second storage groove 202. The fixed plate 21 has an L-shaped handle 26 fixedly connected to the rod wall. The guide pipe 24 is equipped with a circulating water flow pipe. The guide pipe 24 of the circulating water flow channel can circulate cooling water inside. The guide pipe 24 is made of metal conductor material, which facilitates the transfer of the cooling water to the movable contact 13.

[0017] In use, the water tank 3 is filled with cooling water through the inlet pipe. When the movable contact bracket 12 needs to be disassembled, the operator lifts the frame 2 using the handle 26, then starts the dual-shaft water pump 31 to guide the cooling water through the guide pipe 24 via two elastic guide pipes 32, and then circulates the water back into the water tank 3. At this time, the reciprocating cylinder 22 is started, which moves the guide pipe 24 to one side via the connecting plate 23. The guide pipe 24 will then cover the movable contact 13 and stop. The circulating cooling water in the guide pipe 24 will then cover the movable contact 13 and the movable contact... The frame 12 is rapidly cooled, and then the reciprocating cylinder 22 drives the connecting plate 23 to move to the other end, so that the movable contact 13 and the movable contact frame 12 can be pulled out in the slot 101. The pulled-out movable contact frame 12 and movable contact 13 will fall into the first storage slot 201, and the second storage slot 202 can store the unused movable contact 13. When it is necessary to assemble the movable contact 13, it is only necessary to first insert the movable contact frame 12 into the slot 101, and then push the movable contact frame 12 through the semi-circular retaining ring 25 to assemble it.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick contact replacement device for a DC contactor, comprising a mounting base (1) and a frame (2), wherein two movable contact seats (11) are fixedly connected inside the mounting base (1), and a movable contact frame (12) is slidably engaged on the movable contact seat (11), and a movable contact (13) is fixedly connected to the top of the movable contact frame (12). Its features are: A fixed plate (21) is fixedly connected to the top edge of the frame (2). A reciprocating cylinder (22) is fixedly connected to both sides of the fixed plate (21). A connecting plate (23) is fixedly connected to the output end of the reciprocating cylinder (22). Two guide pipes (24) are embedded on one side of the connecting plate (23). A semi-circular retaining ring (25) is fixedly connected between the pipe walls of the guide pipes (24). A water storage tank (3) is fixedly connected to the middle of the frame (2). A dual-shaft water pump (31) is fixedly connected to the middle of the top of the water storage tank (3). An elastic water guide pipe (32) connected to the guide pipe (24) is fixedly connected to the output end of the dual-shaft water pump (31), and the other end of the elastic water guide pipe (32) is connected to the water storage tank (3).

2. The quick contact replacement device for a DC contactor according to claim 1, characterized in that: The top of each movable contact seat (11) is provided with a slot (101) that matches the bottom of the movable contact frame (12).

3. The quick contact replacement device for a DC contactor according to claim 1, characterized in that: The water storage tank (3) is equipped with an inlet pipe and an outlet pipe at its top and bottom respectively. The frame (2) is located on both sides of the water storage tank (3) and forms a first storage groove (201) and a second storage groove (202).

4. The quick contact replacement device for a DC contactor according to claim 1, characterized in that: A handle (26) in an L-shape is fixedly connected to the wall of the fixing plate (21).

5. The quick contact replacement device for a DC contactor according to claim 1, characterized in that: The guide pipe (24) is equipped with a circulating water flow pipe inside, and the guide pipe (24) is made of metal conductor material.

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