A power grid circuit operation protection device

Abstract

The utility model discloses a power grid circuit operation protection device, which belongs to the field of circuit protection technology. It mainly aims at the problem that the structure of existing products is relatively complicated, and proposes the following technical solutions, including a circuit breaker body, a bottom plate is provided at the rear end of the circuit breaker body, and the two are connected by a connecting mechanism, and a buffer mechanism is provided inside the bottom plate, and the buffer mechanism includes an arc plate fixedly connected to the inner wall of the rear end of the bottom plate, and the inner concave surface of the arc plate is close to the center of the bottom plate. By setting the buffer mechanism, the utility model can play a good buffering effect on the circuit breaker when the circuit breaker cuts off the current and vibrates itself, and plays a good protective role on the circuit breaker, greatly improving the service life of the circuit breaker. Secondly, by setting the connecting mechanism, the circuit breaker can be quickly disassembled and assembled, which is convenient for the staff to operate, and at the same time, it is convenient for the subsequent staff to overhaul the circuit breaker.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit protection, and in particular relates to a power grid circuit operation protection device. Background Art

[0002] A circuit breaker is a switch device that can close, carry and interrupt the current under normal circuit conditions and close, carry and interrupt the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. Existing circuit breakers are generally installed with screws when in use. When the screws are removed, they rub against the screw holes drilled during installation. In this case, it is easy to cause wear and tear on the screw holes. Installing the circuit breaker at this position later may cause the circuit breaker to be installed in an unstable manner.

[0003] To solve the above problems, the existing patent (Announcement No.: CN220400506U) provides a circuit breaker that is easy to install and disassemble. By setting a mounting mechanism outside the circuit breaker, the circuit breaker can be quickly disassembled and assembled through bolts and threaded rods, which is convenient for subsequent use of the circuit breaker.

[0004] However, when the circuit breaker in the above-mentioned public document cuts off the power supply during use, it will vibrate for a moment and generate a certain collision stress. The stress collision will accelerate the wear of the circuit breaker parts, indirectly reducing the service life of the circuit breaker.

[0005] Therefore, those skilled in the art provide a power grid circuit operation protection device to solve the problems raised in the above background technology. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a power grid circuit operation protection device. By setting a buffer mechanism, it can play a good buffering effect when the circuit breaker cuts off the current and vibrates itself, and play a good protective role on the circuit breaker, which greatly improves the service life of the circuit breaker. Secondly, by setting a connecting mechanism, the circuit breaker can be quickly disassembled and assembled, which is convenient for the staff to operate and for the subsequent staff to inspect and repair the circuit breaker. Finally, different from the traditional integrated circuit breaker, the mounting part of the circuit breaker is separated from the circuit breaker, and there is a gap between the two after installation, which indirectly increases the contact area between the circuit breaker and the air, so that it has a good heat dissipation effect, which can avoid certain safety hazards, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A power grid circuit operation protection device comprises a circuit breaker body, a bottom plate is arranged at the rear end of the circuit breaker body, and the two are connected by a connecting mechanism, a buffer mechanism is arranged inside the bottom plate, and the buffer mechanism comprises an arc plate fixedly connected to the inner wall of the rear end of the bottom plate, and the inner concave surface of the arc plate is close to the center of the bottom plate;

[0009] The buffer mechanism also includes a slider slidably connected to the inner concave surface of the arc-shaped plate, the slider is hinged to the movable arm, and the end of the movable arm away from the slider is hinged to a connecting plate;

[0010] The buffer mechanism also includes an outer rod fixedly connected to the lower end of the connecting plate, a first spring is fixedly connected to the inside of the outer rod, an inner rod passes through the lower end of the outer rod, and one end of the inner rod located inside the outer rod is fixedly connected to the first spring.

[0011] As a further solution of the utility model, two movable arms are provided, which are symmetrically distributed on the front and rear sides of the connecting plate. A circular groove is opened at the front end of the bottom plate, and a rubber ring is provided on the circular groove.

[0012] As a further solution of the utility model, connecting rods are fixedly connected to adjacent surfaces of the two movable arms, and the two connecting rods are connected by a second spring.

[0013] As a further solution of the utility model, the connection mechanism includes a threaded groove column fixedly connected to one end of the inner rod, a threaded column is threadedly connected to the threaded groove column, and one end of the threaded column passes through the circular groove and is fixedly connected to the circuit breaker body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By setting up a buffer mechanism, a good buffering effect can be achieved when the circuit breaker cuts off the current and vibrates itself, which plays a good protective role on the circuit breaker and greatly improves the service life of the circuit breaker. Secondly, by setting up a connecting mechanism, the circuit breaker can be quickly disassembled and assembled, which is convenient for the staff to operate and for the subsequent staff to inspect and repair the circuit breaker. Finally, different from the traditional integrated circuit breaker, the mounting part of the circuit breaker is separated from the circuit breaker, and there is a gap between the two after installation, which indirectly increases the contact area between the circuit breaker and the air, so that it has a good heat dissipation effect and can avoid certain safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a power grid circuit operation protection device;

[0017] Figure 2 for Figure 1 Schematic diagram of the split structure;

[0018] Figure 3 for Figure 2 A schematic diagram of the internal cross-sectional structure of the bottom plate;

[0019] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A;

[0020] Figure 5 for Figure 3 Schematic diagram of the internal cross-sectional structure of the outer rod.

[0021] In the figure: 1. circuit breaker body; 2. bottom plate; 3. inner rod; 4. outer rod; 5. first spring; 6. connecting plate; 7. movable arm; 8. connecting rod; 9. second spring; 10. slider; 11. arc plate; 12. rubber ring; 13. threaded groove column; 14. threaded column; 15. round groove. DETAILED DESCRIPTION

[0022] See also Figures 1 to 5 In an embodiment of the utility model, a power grid circuit operation protection device includes a circuit breaker body 1, a bottom plate 2 is arranged at the rear end of the circuit breaker body 1, and the two are connected by a connecting mechanism, the bottom plate 2 is a hollow structure, and a buffer mechanism is arranged inside the bottom plate 2, the buffer mechanism includes an arc plate 11 fixedly connected to the inner wall of the rear end of the bottom plate 2, the inner concave surface of the arc plate 11 is close to the center of the bottom plate 2, the circuit breaker body 1 and the bottom plate 2 are of separate design, which is convenient for disassembly and assembly of the circuit breaker body 1, and the buffer mechanism is provided with two groups, which are symmetrically distributed up and down based on the threaded groove column 13.

[0023] The buffer mechanism also includes a slider 10 slidably connected to the concave surface of the arc plate 11. Both sides of the slider 10 are arcuate surfaces. Specifically, the cross-section of the slider 10 is in a "︵" shape. The outer arc surface of the slider 10 is gap-matched with the inner arc surface of the arc plate 11. The slider 10 can slide along the inner arc surface of the arc plate 11. The slider 10 is hinged to the movable arm 7. Specifically, the movable arm 7 is hinged at the concave surface of the slider 10. The end of the movable arm 7 away from the slider 10 is hinged to the connecting plate 6. Two movable arms 7 are arranged on each group of buffer mechanisms. The two movable arms 7 and the arc plate 11 form a triangular support. While maintaining the stability of the structure, the vibration force can also be dispersed to improve the buffering effect.

[0024] The buffer mechanism also includes an outer rod 4 fixedly connected to the lower end of the connecting plate 6, a first spring 5 is fixedly connected to the inside of the outer rod 4, an inner rod 3 passes through the lower end of the outer rod 4, one end of the inner rod 3 located inside the outer rod 4 is fixedly connected to the first spring 5, the outer rod 4 is hollow in design, and the first spring 5 is fixedly connected to the inside thereof, the inner rod 3 can move based on the outer rod 4, and the first spring 5 is used to form a first layer of buffering for the circuit breaker body 1.

[0025] There are two movable arms 7, which are symmetrically distributed on the front and rear sides of the connecting plate 6. A circular groove 15 is opened at the front end of the bottom plate 2, and a rubber ring 12 is arranged on the circular groove 15. The inner diameter of the circular groove 15 and the rubber ring 12 is larger than the diameter of the threaded column 14. The rubber ring 12 is used to form a buffer protection for the threaded column 14 to avoid damage to the connecting mechanism caused by collision.

[0026] Connecting rods 8 are fixedly connected to adjacent surfaces of the two movable arms 7. The two connecting rods 8 are connected via a second spring 9. The second spring 9 is used for resetting the movable arms 7 to provide a further buffering effect.

[0027] The connecting mechanism includes a threaded column 13 fixedly connected to one end of the inner rod 3. The threaded column 13 is a hollow cylindrical structure. There is a certain distance between the threaded column 13 and the bottom plate 2. A threaded column 14 is threadedly connected to the threaded column 13. One end (front end) of the threaded column 14 passes through the circular groove 15 and is fixedly connected to the circuit breaker body 1. By setting the connecting mechanism, the circuit breaker body 1 can be disassembled and assembled by simply rotating. There is no need to use tools such as screwdrivers during the process, which saves time and effort.

[0028] The working principle of the utility model is as follows: the protective device is a circuit breaker, which is mainly used to cut off the circuit when a short circuit occurs in the circuit. At the moment of cutting off the circuit, the circuit breaker body 1 will vibrate to a certain extent. When the circuit breaker body 1 vibrates, it will move, thereby driving the threaded groove column 13 to move through the threaded column 14, and the threaded groove column 13 will then push the inner rod 3 to move, and then squeeze the first spring 5 in the outer rod 4. The first spring 5 will have a good buffering effect, which can effectively prevent the components inside the circuit breaker body 1 from being damaged by vibration. When the vibration is large, the outer rod 4 will also drive the connecting plate 6 to move, so as to prevent the inner rod 3 from moving. By pushing the movable arm 7 to move to both sides of the arc plate 11 through the slider 10, the force received is dispersed through the triangular structure to prevent the vibration force from damaging the buffer mechanism. At the same time, when the movable arm 7 moves, it will pull the second spring 9, which has a further buffering effect. When the circuit breaker body 1 needs to be maintained, it is only necessary to remove the wires first, and then directly rotate the circuit breaker body 1 to drive the threaded column 14 to rotate. When the threaded column 14 is moved out of the threaded groove column 13 by rotation, the circuit breaker body 1 can be removed for maintenance. At the same time, different from the traditional screw installation method, the circuit breaker body 1 can be quickly disassembled and assembled.

[0029] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power grid circuit operation protection device, comprising a circuit breaker body (1), characterized in that: A bottom plate (2) is provided at the rear end of the circuit breaker body (1), and the two are connected via a connecting mechanism; a buffer mechanism is provided inside the bottom plate (2), and the buffer mechanism comprises an arc-shaped plate (11) fixedly connected to the inner wall of the rear end of the bottom plate (2); the inner concave surface of the arc-shaped plate (11) is close to the center of the bottom plate (2); The buffer mechanism further comprises a slider (10) slidably connected to the inner concave surface of the arc-shaped plate (11), the slider (10) being hinged to the movable arm (7), and an end of the movable arm (7) away from the slider (10) being hinged to a connecting plate (6); The buffer mechanism further comprises an outer rod (4) fixedly connected to the lower end of the connecting plate (6), a first spring (5) being fixedly connected to the interior of the outer rod (4), an inner rod (3) passing through the lower end of the outer rod (4), and one end of the inner rod (3) located inside the outer rod (4) being fixedly connected to the first spring (5).

2. A power grid circuit operation protection device according to claim 1, characterized in that: Two movable arms (7) are provided, symmetrically distributed on the front and rear sides of the connecting plate (6); a circular groove (15) is provided at the front end of the bottom plate (2), and a rubber ring (12) is provided on the circular groove (15).

3. A power grid circuit operation protection device according to claim 2, characterized in that: Connecting rods (8) are fixedly connected to adjacent surfaces of the two movable arms (7), and the two connecting rods (8) are connected via a second spring (9).

4. A power grid circuit operation protection device according to claim 3, characterized in that: The connection mechanism comprises a threaded groove column (13) fixedly connected to one end of the inner rod (3), a threaded column (14) being threadedly connected to the threaded groove column (13), and one end of the threaded column (14) passing through the circular groove (15) and fixedly connected to the circuit breaker body (1).

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