Knife switch convenient to operate for high-voltage line

Abstract

The utility model discloses a high-voltage line knife switch convenient to operate, which comprises a bottom plate, two insulating columns are mounted on the top surface of the bottom plate, a first wiring board is mounted on the top surface of the insulating column on one side, a second wiring board is mounted on the top surface of the insulating column on the other side, and a knife switch is rotatably mounted on the top surface of the second wiring board. A static contact is installed on the top face of the first wiring board, two moving contacts are fixedly installed on one side of the knife switch, an elastic piece is arranged between the two moving contacts, a clamping groove is formed in one side of the static contact, an installation block is fixedly installed on the inner side of the knife switch, and an L-shaped clamping plate is installed in the installation block in a sliding and penetrating mode. And one end of the L-shaped clamping plate penetrates through the clamping groove. According to the utility model, the L-shaped clamping plate is inserted into the clamping groove to ensure the stability of the knife switch during switching on, and the lifting column is pulled towards one direction during switching off, so that the L-shaped clamping plate is separated from the clamping groove, the mounting block and the knife switch are driven to rotate, the static contact and the moving contact are separated, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of knife switches, in particular to a knife switch which is easy to operate and is used for high-voltage lines. Background Art

[0002] In high-voltage power systems, knife switches are key control and isolation equipment, and their ease of operation and failure rate are crucial to the stable operation of the power system.

[0003] Traditional knife switches usually require the use of complex tools or multi-step operations to complete the opening and closing of the switch, which not only increases the workload and operation time of the operator, but may also cause equipment damage or failure due to improper operation, bringing risks to the safe and stable operation of the power system. To this end, we propose a knife switch that is easy to operate for high-voltage lines. Utility Model Content

[0004] The utility model aims to provide a knife switch for high-voltage lines which is easy to operate, so as to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a knife switch for high-voltage lines that is easy to operate, comprising a bottom plate, two insulating columns are installed on the top surface of the bottom plate, a first wiring board is installed on the top surface of the insulating column on one side, and a second wiring board is installed on the top surface of the insulating column on the other side, a knife switch is rotatably installed on the top surface of the second wiring board, a static contact is installed on the top surface of the first wiring board, two moving contacts are fixedly installed on one side of the knife switch, an elastic member is arranged between the two moving contacts, and a card slot is opened on one side of the static contact;

[0006] A mounting block is fixedly installed on the inner side of the knife gate, an L-shaped card plate is slidably installed inside the mounting block, one end of the L-shaped card plate passes through the card slot, an elastic member is arranged between the L-shaped card plate and the mounting block, an inclined surface is arranged on one side of the L-shaped card plate, a lifting column is slidably installed inside the mounting block, a baffle is installed at the bottom of the lifting column, a support plate is hinged on one side of the lifting column, and the other end of the support plate is hinged on one side of the L-shaped card plate.

[0007] Preferably, the elastic member is specifically a plurality of elastic strips, and two ends of the elastic strips are respectively fixedly mounted on one side of the two moving contacts.

[0008] Preferably, a guide plate inclined outward is installed on the bottom surface of the moving contact.

[0009] Preferably, the elastic member is specifically a spring, one end of the spring is fixedly mounted on one side of the L-shaped clamping plate, and the other end of the L-shaped clamping plate is fixedly mounted on one side of the mounting block.

[0010] Preferably, a pull ring is fixedly mounted on one end of the lifting column.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The high-voltage line uses an easy-to-operate knife switch. Push the knife switch to rotate so that the moving contact clamps the static contact. The inclined surface of the L-shaped card plate contacts the static contact, so that the L-shaped card plate moves inside the mounting block until the L-shaped card plate is aligned with the card slot. Under the action of the spring, the L-shaped card plate is pushed into the card slot. At this time, the position of the L-shaped card plate is fixed, so that the position of the card slot is restricted and cannot rotate, thereby ensuring the stability of the knife switch after closing.

[0013] 2. The high-voltage line uses an easy-to-operate knife switch. When opening the switch, the pull ring is pulled by a tool, and the pull ring drives the lifting column to move. The lifting column drives the support plate to rotate, thereby driving the L-shaped card plate to move out of the card slot. Continue to pull the pull ring, which can drive the mounting block to move through the lifting column, thereby driving the knife to move, and make the moving contact separate from the static contact, completing the opening work. The operation is simple and the opening efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the installation block structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the enlarged structure of A of the utility model.

[0018] In the figure: 1. bottom plate; 2. insulating column; 3. first terminal block; 4. switch; 5. static contact; 6. moving contact; 7. guide plate; 8. elastic strip; 9. mounting block; 10. L-shaped clamping plate; 11. spring; 12. lifting column; 13. support plate; 14. baffle; 15. pull ring; 16. slot; 17. second terminal block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] Please refer to Figure 1-4As shown, the utility model provides a knife switch for high-voltage lines that is easy to operate, comprising a bottom plate 1, two insulating columns 2 are installed on the top surface of the bottom plate 1, a first terminal block 3 is installed on the top surface of the insulating column 2 on one side, a second terminal block 17 is installed on the top surface of the insulating column 2 on the other side, a knife switch 4 is rotatably installed on the top surface of the second terminal block 17, a static contact 5 is installed on the top surface of the first terminal block 3, two moving contacts 6 are fixedly installed on one side of the knife switch 4, an elastic member is arranged between the two moving contacts 6, and a card slot 16 is opened on one side of the static contact 5;

[0022] A mounting block 9 is fixedly installed on the inner side of the knife gate 4, an L-shaped card plate 10 is slidably installed inside the mounting block 9, one end of the L-shaped card plate 10 passes through the card slot 16, an elastic member is arranged between the L-shaped card plate 10 and the mounting block 9, an inclined surface is arranged on one side of the L-shaped card plate 10, a lifting column 12 is slidably installed inside the mounting block 9, a baffle plate 14 is installed at the bottom of the lifting column 12, a support plate 13 is hinged on one side of the lifting column 12, and the other end of the support plate 13 is hinged on one side of the L-shaped card plate 10.

[0023] Specifically, when closing the switch, the L-shaped card plate 10 is inserted into the card slot 16 to ensure the stability of the knife switch 4. When opening the switch, the lifting column 12 is pulled in one direction to disengage the L-shaped card plate 10 from the card slot 16, and drive the mounting block 9 and the knife switch 4 to rotate, so that the static contact 5 and the moving contact 6 are separated. The operation is simple.

[0024] The elastic member is specifically a plurality of elastic strips 8 , both ends of which are fixedly mounted on one side of the two moving contacts 6 , respectively. The elastic strips 8 exert elastic force on the moving contacts 6 , so that the two moving contacts 6 tend to approach each other.

[0025] Wherein: a guide plate 7 inclined outward is installed on the bottom surface of the moving contact 6. During the movement of the moving contact 6, the guide plate 7 will first contact the stationary contact 5, so that the two moving contacts 6 are spread apart.

[0026] Among them: the elastic member is specifically a spring 11, one end of the spring 11 is fixedly mounted on one side of the L-shaped card plate 10, and the other end of the L-shaped card plate 10 is fixedly mounted on one side of the mounting block 9. The spring 11 is used to provide force for the L-shaped card plate 10 to be inserted into the card slot 16.

[0027] Wherein: a pull ring 15 is fixedly installed at one end of the lifting column 12, and a tool is passed through the pull ring 15 to facilitate the control of the position of the lifting column 12.

[0028] Working principle: The utility model is a knife switch for high-voltage lines that is easy to operate. When closing the switch, a tool is used to push the knife switch 4 to rotate, and the knife switch 4 drives the moving contact 6 and the guide plate 7 to rotate until the two moving contacts 6 are clamped on the outside of the static contact 5. The elastic strip 8 provides a certain elastic force to squeeze the two moving contacts 6 to move in a direction close to each other. During the movement of the moving contact 6, the guide plate 7 will first contact the static contact 5, so that the two moving contacts 6 are stretched apart, making it convenient for the moving contact 6 to clamp the static contact 5. During this process, the inclined surface of the L-shaped card plate 10 contacts the static contact 5, so that the L-shaped card plate 10 moves inside the mounting block 9 until the L-shaped card plate 10 is aligned with the card slot 16. Under the action of the spring 11, the L-shaped card plate 10 is pushed into the card slot 16. At this time, the position of the L-shaped card plate 10 is fixed, so that the position of the card slot 16 is restricted and cannot rotate, thereby ensuring the stability of the knife switch after closing.

[0029] When opening the gate, the pull ring 15 is pulled by a tool, and the pull ring 15 drives the lifting column 12 to move, and the lifting column 12 drives the support plate 13 to rotate, thereby driving the L-shaped card plate 10 to move to the disengagement slot 16, and continuing to pull the pull ring 15 can drive the mounting block 9 to move through the lifting column 12, thereby driving the knife 4 to move, and making the moving contact 6 disengage from the static contact 5, completing the gate opening work, its operation is simple, and the gate opening efficiency is improved.

[0030] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A knife switch for high voltage lines that is easy to operate, comprising a bottom plate (1), characterized in that: Two insulating columns (2) are installed on the top surface of the bottom plate (1); a first wiring board (3) is installed on the top surface of the insulating column (2) on one side, and a second wiring board (17) is installed on the top surface of the insulating column (2) on the other side; a knife switch (4) is rotatably installed on the top surface of the second wiring board (17); a stationary contact (5) is installed on the top surface of the first wiring board (3); two moving contacts (6) are fixedly installed on one side of the knife switch (4); an elastic member is provided between the two moving contacts (6); and a slot (16) is provided on one side of the stationary contact (5); A mounting block (9) is fixedly installed inside the knife blade (4), an L-shaped card plate (10) is slidably installed inside the mounting block (9), one end of the L-shaped card plate (10) passes through a card slot (16), an elastic member is arranged between the L-shaped card plate (10) and the mounting block (9), one side of the L-shaped card plate (10) is provided with an inclined surface, a lifting column (12) is slidably installed inside the mounting block (9), a baffle (14) is installed at the bottom of the lifting column (12), a support plate (13) is hinged on one side of the lifting column (12), and the other end of the support plate (13) is hinged on one side of the L-shaped card plate (10).

2. The easy-to-operate knife switch for high-voltage lines according to claim 1, characterized in that: The elastic member is specifically a plurality of elastic strips (8), and two ends of the elastic strips (8) are respectively fixedly mounted on one side of the two moving contacts (6).

3. The easy-to-operate knife switch for high-voltage lines according to claim 1, characterized in that: A guide plate (7) inclined outward is installed on the bottom surface of the moving contact (6).

4. The easy-to-operate knife switch for high-voltage lines according to claim 1 is characterized in that: The elastic member is specifically a spring (11), one end of the spring (11) is fixedly mounted on one side of the L-shaped card plate (10), and the other end of the L-shaped card plate (10) is fixedly mounted on one side of the mounting block (9).

5. The easy-to-operate knife switch for high-voltage lines according to claim 1 is characterized in that: A pull ring (15) is fixedly mounted on one end of the lifting column (12).

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