Load switch arc contact delay action structure

Abstract

The utility model discloses a load switch arcing contact delay action structure, which comprises a main contact and an arcing contact, the main contact is connected with a main contact push rod, the arcing contact is connected with an arcing contact push rod, the arcing contact push rod is provided with a groove, the bottoms of the main contact and the arcing contact are provided with an opening support, and the opening support is provided with a groove. One side of the opening support is provided with a closing support, the end parts of the main contact push rod and the arc contact push rod are connected with a driving assembly, and the driving assembly is used for driving the main contact push rod and the arc contact push rod to move. According to the utility model, the action of the arc contact is controlled to be later than that of the main contact, so that the main contact is prevented from being burnt by arc discharge.

Description

Technical Field

[0001] The utility model relates to the technical field of load switch equipment, in particular to a load switch arc contact delayed action structure. Background Art

[0002] Load switches are widely used in power systems, particularly in high-voltage distribution systems, where they close and interrupt current. With the increasing demand for industrial and residential electricity, the reliability and service life of power equipment are receiving increasing attention. Improving the performance of load switches helps ensure stable power system operation and reduce the likelihood of power outages. Consequently, higher requirements are placed on the coordinated operation of the arcing contacts and main contacts in load switches.

[0003] In existing technologies, to ensure reliable operation of load switches, common methods include using traditional mechanical linkages or simple time-delay mechanisms to control the movement of the arcing contacts. Traditional mechanical linkages transmit the movement of the main contacts to the arcing contacts via a connecting rod, while time-delay mechanisms introduce a certain delay effect by introducing damping or elastic elements.

[0004] However, when the main contacts are opening and closing, the high temperature generated by the arc may damage the main contacts. Although existing technical solutions can partially solve this problem, they usually lead to high failure rates and reduced reliability due to the complex structure of the transmission device. Especially when no intelligent control means are adopted, it is difficult to achieve precise delay by relying solely on mechanical mechanisms. Utility Model Content

[0005] The present application provides a load switch arc contact delayed action structure, which controls the arc contact to act later than the main contact, thereby ensuring that the main contact is not burned by arcing.

[0006] The present application provides a load switch arc contact delayed action structure, which adopts the following technical solutions:

[0007] A load switch arc contact delayed action structure includes a main contact and an arc contact, wherein the main contact is connected to a main contact push rod, the arc contact is connected to an arc contact push rod, a groove is provided on the arc contact push rod, a trip bracket is provided at the bottom of the main contact and the arc contact, a closing bracket is provided on one side of the trip bracket, and the ends of the main contact push rod and the arc contact push rod are connected to a drive assembly, which is used to drive the main contact push rod and the arc contact push rod to move.

[0008] By adopting the above technical scheme, the utility model designs a load switch arc contact delayed action structure. When in use, first install one end of the main contact and the arc contact on the switch bracket, and then connect the main contact and the arc contact to the main contact push rod and the arc contact push rod respectively. A groove is provided on the arc contact push rod, and the driving component is used to drive the main contact push rod and the arc contact push rod to move. Since the groove is provided on the arc contact push rod, the arc contact push rod will not move when the main contact push rod moves. After the main contact push rod moves a certain distance, the driving component moves to the end of the groove before the arc contact push rod is moved. The movement situation after closing is the same. Therefore, by controlling the action of the arc contact to be later than the main contact, it can be ensured that the main contact is not burned by the arc.

[0009] Preferably, the driving assembly includes a driving rod and a connecting piece, the driving rod respectively connecting the connecting piece with the main contact push rod and the arc contact push rod, and the driving assembly drives the main contact push rod and the driving rod on the arc contact push rod to move back and forth, thereby driving the main contact push rod and the arc contact push rod to move, the driving rod on the arc contact push rod is arranged in a groove, and the end of the connecting piece away from the driving rod is used to connect to the power equipment.

[0010] By adopting the above technical solution, when in use, the driving rod on the arc contact push rod is initially located at one end of the groove. When the power equipment driving connector drives the driving rod to move, the driving rod on the main contact push rod will directly drive it to move, and the driving rod on the arc contact push rod will drive the arc contact push rod to move after moving to the other end of the groove. This design method realizes the precise driving and control of the main contact and the arc contact, ensuring that the arc contact moves later than the main contact.

[0011] Preferably, a rotating rod is provided on the opening bracket, and the main contact and the arc contact are rotatably connected to the rotating rod.

[0012] By adopting the above technical solution, when in use, the main contact and the arc contact can be rotatably connected on the opening bracket through the rotating rod, thereby realizing the opening and closing operation of the contacts, making the contact action more stable and reliable.

[0013] Preferably, the groove is arranged along the length direction of the arc contact push rod, and the inner wall of the groove is used for the driving rod to slide.

[0014] By adopting the above technical solution, when in use, the driving rod can slide smoothly in the groove, ensuring that the driving rod moves smoothly along the length direction of the arc contact push rod, thereby improving the stability of the movement of the main contact and the arc contact.

[0015] Preferably, gaps are provided between the arcing contact push rod and the main contact push rod, and between the main contact and the arcing contact.

[0016] By adopting the above technical solution, when in use, gaps are provided between the arc contact push rod and the main contact push rod, and between the main contact and the arc contact, which effectively avoids mutual interference between the contacts during operation and ensures the independence and reliability of the contact action.

[0017] Preferably, the main contact and the arcing contact are provided with connecting rods, and the main contact and the arcing contact are connected to the main contact push rod and the arcing contact push rod via the connecting rods.

[0018] By adopting the above technical solution, when in use, the connecting rods arranged on the main contacts and arc contacts enable the main contacts and arc contacts to be connected to each other with the main contact push rod and arc contact push rod through the connecting rods, thereby ensuring that the main contacts and arc contacts can move stably and synchronously under the drive of the drive assembly, thereby improving the reliability and consistency of the contact action.

[0019] Preferably, the closing bracket is provided with a closing device for closing with the main contact and the arc contact, and the closing device is fixed on the closing bracket.

[0020] By adopting the above technical solution, when in use, the closing device provided on the closing bracket can ensure that the closing process of the main contacts and the arcing contacts is stable and reliable, thereby improving the operational safety of the load switch.

[0021] Preferably, a fixing plate is provided at the bottom of the opening bracket and the closing bracket, and the fixing plate is used to fix the opening bracket and the closing bracket at the same time, so that the opening and closing processes remain stable.

[0022] By adopting the above technical solution, when in use, the setting of the fixing plate enables the opening bracket and the closing bracket to remain stable during the opening and closing process, thereby improving the stability and reliability of the load switch arc contact delayed action structure during operation.

[0023] In summary, this application has the following beneficial effects:

[0024] 1. This utility model designs a load switch arc contact delayed action structure. By providing a groove on the arc contact push rod, and the drive rod in the drive assembly can slide in the groove, it realizes the delayed action of the main contact and the arc contact, effectively reduces the generation of arc, and improves the safety and reliability of the load switch.

[0025] 2. This utility model designs a load switch arc contact delayed action structure. The drive assembly includes a drive rod and a connector. The drive rod drives the main contact push rod and the arc contact push rod to move. The structure is simple and easy to operate, reducing manufacturing costs while ensuring equipment operation efficiency.

[0026] 3. The utility model designs a load switch arc contact delayed action structure, which adopts the design of opening bracket and closing bracket, ensuring that the main contact and arc contact move smoothly and stably during the opening and closing process, further enhancing the stability and service life of the load switch during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the embodiment in the open position;

[0028] Figure 2 This is a schematic diagram of the structure of the embodiment starting to move toward the closing position;

[0029] Figure 3 This is a schematic diagram of the structure of the embodiment in the closed position;

[0030] Figure 4 A schematic diagram of the structure of the embodiment in which the closing position moves to the opening position;

[0031] Explanation of the accompanying symbols: 1. Main contact; 2. Arc contact; 3. Main contact push rod; 4. Arc contact push rod; 5. Groove; 6. Opening bracket; 7. Closing bracket; 8. Driving assembly; 81. Driving rod; 82. Connecting part; 9. Rotating rod; 10. Closing device; 11. Fixed plate. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below with reference to the accompanying drawings. Like components are denoted by like reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0033] The utility model discloses a load switch arc contact delayed action structure, such as Figure 1 As shown, it includes a main contact 1 and an arc contact 2. Both the main contact 1 and the arc contact 2 are made of tungsten copper to ensure the life of the arc contact 2. The main contact 1 is connected to a main contact push rod 3, and the arc contact 2 is connected to an arc contact push rod 4. A safety gap of a certain distance is provided between the main contact push rod 3 and the arc contact push rod 4 to avoid the risk of unexpected short circuit. A gap is also provided between the main contact 1 and the arc contact 2 to ensure that the two will not interfere with each other during the transition between different states. Connecting rods are provided on the main contact 1 and the arc contact 2, and the main contact 1 and the arc contact 2 are connected to the main contact push rod 3 and the arc contact push rod 4 through the connecting rod.

[0034] A groove 5 is provided on the arc contact push rod 4, and the inner wall of the groove 5 is used for the driving rod 81 to slide. In order to further improve the reliability and stability of the delayed action structure, the groove 5 is arranged along the length direction of the arc contact push rod 4. The inner wall of the groove 5 is polished to ensure that the driving rod 81 does not get stuck when it makes a linear reciprocating motion therein. The ends of the main contact push rod 3 and the arc contact push rod 4 are connected with a driving assembly 8. The driving assembly 8 is used to drive the main contact push rod 3 and the arc contact push rod 4 to move. The driving assembly 8 includes a driving rod 81 and a connecting piece 82. The connecting piece 8 2 is connected with the driving rod 81, which connects the driving rod 81 with the main contact push rod 3 and the arc contact push rod 4. The driving assembly 8 drives the driving rod 81 on the main contact push rod 3 and the arc contact push rod 4 to move back and forth, thereby driving the main contact push rod 3 and the arc contact push rod 4 to move. The driving rod 81 on the arc contact push rod 4 is set in the groove 5. The end of the connecting piece 82 away from the driving rod 81 is used to connect to the power equipment. The power equipment can select a DC servo motor or a pneumatic plunger pump as the driving force source, and cooperate with an appropriate deceleration and torque increase mechanism to ensure that the movement accuracy is controllable.

[0035] A trip bracket 6 is provided at the bottom of the main contact 1 and the arc contact 2, and a rotating rod 9 is provided on the trip bracket 6. The main contact 1 and the arc contact 2 are rotatably connected to the rotating rod 9. The rotating rod 9 is connected to the main contact 1 and the arc contact 2 through a solid cylinder made of high-strength alloy steel. Its diameter is selected according to the load size to ensure the load-bearing capacity and durability.

[0036] like Figure 2 As shown, at this time, the main contact 1 and the arc contact 2 begin to move from the open position to the closed position through the driving assembly 8. The main contact 1 moves instantaneously, while the arc contact 2 starts to move after the driving rod 81 moves from one end of the groove 5 to the other end.

[0037] like Figure 3 As shown, at this time, the main contact 1 and the arc contact 2 have begun to close, and a closing bracket 7 is provided on one side of the opening bracket 6. The closing bracket 7 is provided with a closing device 10 for closing with the main contact 1 and the arc contact 2. The closing device 10 is fixed on the closing bracket 7. A fixing plate 11 is provided at the bottom of the opening bracket 6 and the closing bracket 7. The fixing plate 11 is used to simultaneously fix the opening bracket 6 and the closing bracket 7 to keep the opening and closing processes stable.

[0038] like Figure 4 As described above, at this time, the main contact 1 and the arc contact 2 move from the closing position to the opening position, and the driving rod 81 on the arc contact 2 returns to the starting end.

[0039] Working Principle: This utility model features a load switch arc contact delayed action structure. Through a rational structural design, it achieves precise control over the timing of the arc contact 2 and main contact 1. This not only prevents strong arc discharges when disconnecting high-current circuits, but also effectively extends the service life of the contacts. Specifically, the arc contact push rod 4 with a groove 5 and the drive assembly 8 ensure that during contact operation, the main contact 1 makes contact or separates earlier than the arc contact 2. This delay mechanism significantly reduces arcing, thereby ensuring the safety and stability of the power system.

[0040] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A load switch arc contact delayed action structure, characterized by: The invention comprises a main contact (1) and an arc contact (2); the main contact (1) is connected to a main contact push rod (3); the arc contact (2) is connected to an arc contact push rod (4); a groove (5) is provided on the arc contact push rod (4); a trip bracket (6) is provided at the bottom of the main contact (1) and the arc contact (2); a closing bracket (7) is provided on one side of the trip bracket (6); the ends of the main contact push rod (3) and the arc contact push rod (4) are connected to a drive assembly (8); the drive assembly (8) is used to drive the main contact push rod (3) and the arc contact push rod (4) to move.

2. The load switch arc contact delayed action structure according to claim 1, characterized in that: The driving assembly (8) comprises a driving rod (81) and a connecting piece (82), wherein the driving rod (81) is respectively connected to the connecting piece (82) and the main contact push rod (3) and the arc contact push rod (4), and the driving assembly (8) drives the main contact push rod (3) and the driving rod (81) on the arc contact push rod (4) to move back and forth, thereby driving the main contact push rod (3) and the arc contact push rod (4) to move, wherein the driving rod (81) on the arc contact push rod (4) is arranged in the groove (5), and the end of the connecting piece (82) away from the driving rod (81) is used for connecting to a power device.

3. The load switch arc contact delayed action structure according to claim 1, characterized in that: A rotating rod (9) is provided on the opening bracket (6), and the main contact (1) and the arc contact (2) are rotatably connected to the rotating rod (9).

4. The load switch arc contact delayed action structure according to claim 1, characterized in that: The groove (5) is arranged along the length direction of the arc contact push rod (4), and the inner wall of the groove (5) is used for the driving rod (81) to slide.

5. The load switch arc contact delayed action structure according to claim 1, characterized in that: Gaps are provided between the arc contact push rod (4) and the main contact push rod (3), and between the main contact (1) and the arc contact (2).

6. The load switch arc contact delayed action structure according to claim 1, characterized in that: The main contact (1) and the arc contact (2) are provided with connecting rods, and the main contact (1) and the arc contact (2) are connected to the main contact push rod (3) and the arc contact push rod (4) via the connecting rods.

7. The load switch arc contact delayed action structure according to claim 1, characterized in that: The closing bracket (7) is provided with a closing device (10) for closing with the main contact (1) and the arc contact (2); the closing device (10) is fixed on the closing bracket (7).

8. The load switch arc contact delayed action structure according to claim 1, characterized in that: A fixing plate (11) is provided at the bottom of the opening bracket (6) and the closing bracket (7); the fixing plate (11) is used to simultaneously fix the opening bracket (6) and the closing bracket (7), so that the opening and closing processes remain stable.

Images