Operating mechanism of switchgear

Abstract

The utility model relates to the technical field of electrical equipment, in particular to an operating mechanism of switch equipment, which enables a worker to control a blade to be closed or opened outside a protective cover, prevents electric arc generated by the blade during switching from being in contact with combustible materials in air, and improves safety and reliability. Comprising a mounting plate, a protective cover, a sealing door, two groups of conductive shafts, two groups of wiring terminals A, two groups of blades, a connecting rod and two groups of wiring terminals B. The protective cover is fixedly mounted on the mounting plate, a cavity is formed in the protective cover, a pick-and-place opening is formed in the front end of the protective cover, the sealing door is mounted on the outer side of the pick-and-place opening, and the two groups of conductive shafts are rotationally mounted on the two groups of wiring terminals A respectively. The two groups of terminals A are fixedly mounted at the lower part of the protective cover chamber, the lower parts of the two groups of blades are fixedly mounted on the two groups of conductive shafts respectively, the upper parts of the two groups of blades are fixedly connected to the connecting rod, and the two groups of terminals B are fixedly mounted at the upper part of the protective cover chamber; a rotating shaft, a transmission mechanism and a driving mechanism are further included.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an operating mechanism of a switch device. Background Art

[0002] A switch is a mechanism used to control the conduction or disconnection of current in a circuit and is widely used in electrical equipment. There are many types of switches, among which the most commonly used switch is a knife switch; in the prior art, a utility model patent with a patent application number of 202221206108.2 discloses an open knife switch, which is mainly composed of a wire plate, a first connection end, a second connection end, a blade and a shell, etc., an insulator for grasping is provided on the blade, the blade is connected to the second connection end, the blade, the first connection end, and the second connection end are all mounted on the wire plate, the shell is mounted on the wire plate, and the first connection end, the second connection end and the blade are all located in the shell; when the staff needs to turn on the switch, they all need to open the shell and rotate the blade to connect the blade to the first connection end to connect the circuit; it is found during use that since the blade and the terminal of the switch in the above-mentioned prior art are directly in contact with the outside air when opening and closing, when it is used in some occasions with high dust concentration, such as flour processing plants or coal processing plants, the high-temperature arc generated when the switch is closed is very easy to ignite the combustible dust in the air, and even cause dust explosions, leading to serious safety accidents, so a high-safety switch device operating mechanism is needed. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an operating mechanism of a switch device that allows a worker to control the blade to close or open outside the protective cover, avoiding the arc generated by the blade when switching and contacting combustibles in the air, thereby improving safety and reliability.

[0004] The operating mechanism of the switch device of the utility model comprises a mounting plate, a protective cover, a sealing door, two groups of conductive shafts, two groups of terminal A, two groups of blades, a connecting rod and two groups of terminal B. The protective cover is fixedly mounted on the mounting plate, a chamber is arranged inside the protective cover, a take-in and put-out port is arranged at the front end of the protective cover, the sealing door is mounted on the outside of the take-in and put-out port, the two groups of conductive shafts are rotatably mounted on the two groups of terminal A respectively, the two groups of terminal A are fixedly mounted on the lower part of the protective cover chamber, the lower parts of the two groups of blades are fixedly mounted on the two groups of conductive shafts respectively, the upper parts of the two groups of blades are fixedly connected to the connecting rod, and the two groups of terminal B are fixedly mounted on the upper part of the protective cover chamber; the utility model also comprises a rotating shaft, a transmission mechanism and a driving mechanism, the left and right ends of the rotating shaft are fixedly mounted on the two groups of conductive shafts respectively, the rotating shaft is coaxial with the two groups of conductive shafts, the connecting rod is connected to the driving mechanism through the transmission mechanism, the driving mechanism is mounted on the outer side wall of the protective cover, the driving mechanism is used to drive the transmission mechanism to rotate, and the transmission mechanism The mechanism is used to drive the connecting rod to rotate; the two ends of the external circuit are electrically connected to the terminal B and the terminal A respectively. When the circuit needs to be turned on, the staff drives the transmission mechanism to drive the connecting rod to rotate clockwise through the driving mechanism, and the connecting rod drives the blade to rotate synchronously until the upper part of the blade contacts the terminal B, so that the blade is electrically connected to the terminal B, and the current in the external circuit is returned to the external circuit through the conductive shaft, the terminal A, the blade and the terminal B in sequence, so as to achieve the conduction of the circuit; when the circuit is disconnected, similarly, the transmission mechanism drives the conductive shaft to rotate counterclockwise through the driving mechanism, so that the blade is out of contact with the terminal B; when opening and closing the blade, there is no need to open the sealing door, and the staff can operate the blade outside the protective cover. Through the protection of the protective cover, the direct contact between the blade and the outside air when opening and closing is avoided, and the arc generated by the blade is avoided from contacting the combustible materials in the air, thereby improving safety and reliability.

[0005] Preferably, the transmission mechanism includes a transmission shaft and an eccentric wheel, the transmission shaft is rotatably mounted on the protective cover, the right end of the transmission shaft is fixedly connected to the end of the eccentric wheel away from the center of the circle, the other end of the eccentric wheel away from the center of the circle is fixedly connected to the left end of the connecting rod, the left end of the transmission shaft is located outside the protective cover, and the left end of the transmission shaft is connected to the driving mechanism; when the connecting rod is driven to rotate, the staff rotates the transmission shaft through the driving mechanism, and the transmission shaft drives the eccentric wheel to rotate synchronously with the transmission shaft as the center of the circle, and then the eccentric wheel drives the connecting rod to rotate; the rotation of the connecting rod is convenient.

[0006] Preferably, the driving mechanism includes a worm wheel, a worm, a fixed plate and a handwheel, the worm wheel is fixedly mounted on the transmission shaft, the worm wheel meshes with the worm, the worm is rotatably mounted on the fixed plate, the handwheel is fixedly mounted on the worm, and the fixed plate is fixedly mounted on the protective cover; when the driving connecting rod rotates, the staff drives the worm to rotate through the handwheel, and then the worm drives the worm wheel to rotate, and the worm wheel drives the connecting rod to rotate through the transmission shaft and the eccentric wheel, so that the connecting rod drives the blade to rotate; the rotation of the connecting rod is convenient.

[0007] Preferably, it also includes a disc and a bolt, the disc is fixedly installed at the lower part of the worm, the disc is located below the fixed plate, and the bolt is threadedly mounted on the disc; when the blade rotates to a suitable state, the bolt is rotated to make the upper end of the bolt tightly contact with the fixed plate, and the friction between the bolt and the fixed plate prevents the disc from rotating, thereby improving the stability of the worm, preventing the worm wheel from rotating, and then preventing the connecting rod and the blade from rotating through the transmission mechanism; the stability is improved.

[0008] Preferably, it also includes an air supply pipe, a dust removal box, a return pipe and an air pump, the upper part of the air supply pipe is connected to the chamber of the protective cover, the output end of the air supply pipe is connected to the dust removal box, a filter cloth is arranged in the dust removal box, the upper part of the return pipe is connected to the dust removal box, and the output end of the return pipe is connected to the chamber of the protective cover through the air pump; when it is necessary to reduce the concentration of dust in the chamber of the protective cover, turn on the air pump to allow the air in the chamber of the protective cover to enter the dust removal box through the air supply pipe, and then the air filters out dust through the filter cloth and enters the chamber of the protective cover again through the return pipe and the air pump, thereby reducing the concentration of dust in the chamber of the protective cover, and having high safety.

[0009] Preferably, it also includes a nitrogen storage tank and a pressure relief pipe, the nitrogen storage tank is provided with an exhaust pipe, the exhaust pipe is provided with a valve, the output end of the exhaust pipe is connected with the lower part of the protective cover chamber, the nitrogen storage tank is installed on the mounting plate, the pressure relief pipe is installed on the upper part of the protective cover, the lower end of the pressure relief pipe is connected with the chamber of the protective cover, and the pressure relief pipe is provided with a one-way valve; compressed nitrogen is stored in the nitrogen storage tank, when it is necessary to reduce the concentration of oxygen in the protective cover chamber, the valve on the exhaust pipe is opened to allow nitrogen to enter the protective cover chamber through the exhaust pipe, thereby reducing the concentration of oxygen in the protective cover chamber, improving the combustion conditions of combustibles, making the combustibles difficult to burn, and improving safety.

[0010] Preferably, a grip is provided on the hand wheel; the above arrangement makes it easier for the staff to grip the hand wheel, thus improving convenience.

[0011] Compared with the prior art, the utility model has the beneficial effects of enabling the staff to control the blade to close or open outside the protective cover, thus avoiding the electric arc generated by the blade from contacting the combustibles in the air, and improving safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0013] Figure 2 It is a first axonometric structural schematic diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the gas pipeline, dust removal box and air pump;

[0015] Figure 4 It is a schematic diagram of the structure of the worm wheel, worm and transmission shaft;

[0016] Figure 5 yes Figure 2 A schematic diagram of the structure with a partial enlargement at the center;

[0017] Figure 6 It is a second axonometric structural schematic diagram of the utility model.

[0018] Markings in the attached figure: 1. Mounting plate; 2. Protective cover; 3. Sealing door; 5. Conductive shaft; 6. Terminal A; 7. Blade; 8. Terminal B; 9. Rotating shaft; 10. Transmission shaft; 11. Worm gear; 12. Worm; 13. Fixed plate; 14. Handwheel; 15. Disc; 16. Bolt; 17. Air pipe; 18. Dust removal box; 19. Return pipe; 20. Air pump; 21. Nitrogen storage tank; 22. Pressure relief pipe; 23. Eccentric wheel; 24. Connecting rod. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] like Figures 1 to 6The operating mechanism of the switch device of the utility model comprises a mounting plate 1, a protective cover 2, a sealing door 3, two sets of conductive shafts 5, two sets of terminal A6, two sets of blades 7, a connecting rod 24, two sets of terminal B8, a rotating shaft 9, a transmission mechanism and a driving mechanism. The protective cover 2 is fixedly mounted on the mounting plate 1, a chamber is arranged in the protective cover 2, a take-in and put-out port is arranged at the front end of the protective cover 2, the sealing door 3 is mounted on the outside of the take-in and put-out port, the two sets of conductive shafts 5 are rotatably mounted on the two sets of terminal A6 respectively, and the two sets of terminal A6 are fixed. The two sets of blades 7 are fixedly mounted at the lower part of the chamber of the protective cover 2, the lower parts of the two sets of blades 7 are fixedly mounted on the two sets of conductive shafts 5 respectively, the upper parts of the two sets of blades 7 are fixedly connected to the connecting rod 24, the two sets of terminal B8 are fixedly mounted on the upper part of the chamber of the protective cover 2, the left and right ends of the rotating shaft 9 are fixedly mounted on the two sets of conductive shafts 5 respectively, the rotating shaft 9 is coaxial with the two sets of conductive shafts 5, the connecting rod 24 is connected to the driving mechanism through the transmission mechanism, the driving mechanism is mounted on the outer wall of the protective cover 2, and the driving mechanism is used to drive the transmission mechanism to rotate. The transmission mechanism is used to drive the connecting rod 24 to rotate; the two ends of the external circuit are electrically connected to the terminal B8 and the terminal A6 respectively. When the circuit needs to be turned on, the staff drives the transmission mechanism to rotate the connecting rod 24 through the driving mechanism, and the connecting rod 24 drives the blade 7 to rotate clockwise until the upper part of the blade 7 contacts the terminal B8, so that the blade 7 is electrically connected to the terminal B8, and the current in the external circuit is returned to the external circuit through the conductive shaft 5, the terminal A6, the blade 7 and the terminal B8 in sequence, so as to achieve the conduction of the circuit; when the circuit is disconnected, similarly, the transmission mechanism drives the connecting rod 24 to rotate counterclockwise through the driving mechanism, so that the blade 7 is disconnected from the terminal B8; when opening and closing the blade 7, there is no need to open the sealing door 3, and the staff can operate the blade 7 outside the protective cover 2. Through the protection of the protective cover 2, the direct contact between the blade 7 and the outside air when opening and closing is avoided, and the arc generated by the blade 7 is avoided from contacting the combustibles in the air, thereby improving safety and reliability.

[0022] like Figure 1 The transmission mechanism includes a transmission shaft 10 and an eccentric wheel 23. The transmission shaft 10 is rotatably installed on the protective cover 2. The right end of the transmission shaft 10 is fixedly connected to the end of the eccentric wheel 23 away from the center of the circle, and the other end of the eccentric wheel 23 away from the center of the circle is fixedly connected to the left end of the connecting rod 24. The left end of the transmission shaft 10 is located outside the protective cover 2, and the left end of the transmission shaft 10 is connected to the driving mechanism; when the connecting rod 24 is driven to rotate, the staff rotates the transmission shaft 10 through the driving mechanism, and the transmission shaft 10 drives the eccentric wheel 23 to rotate synchronously with the transmission shaft 10 as the center of the circle, so that the eccentric wheel 23 drives the connecting rod 24 to rotate; the rotation of the connecting rod 24 is convenient.

[0023] like Figure 1 and Figure 4The driving mechanism includes a worm wheel 11, a worm 12, a fixed plate 13 and a handwheel 14. The worm wheel 11 is fixedly mounted on the transmission shaft 10, the worm wheel 11 is meshed with the worm 12, the worm 12 is rotatably mounted on the fixed plate 13, the handwheel 14 is fixedly mounted on the worm 12, and the fixed plate 13 is fixedly mounted on the protective cover 2; when the driving connecting rod 24 rotates, the staff drives the worm 12 to rotate through the handwheel 14, and then the worm 12 drives the worm wheel 11 to rotate, and the worm wheel 11 drives the connecting rod 24 to rotate through the transmission shaft 10 and the eccentric wheel 23, so that the connecting rod 24 drives the blade 7 to rotate; the rotation of the connecting rod 24 is convenient.

[0024] like Figure 5 The disc 15 is fixedly installed at the lower part of the worm 12, the disc 15 is located below the fixed plate 13, and the bolt 16 is screwed with the disc 15; when the terminal B8 is rotated to a suitable state, the bolt 16 is rotated to make the upper end of the bolt 16 tightly contact with the fixed plate 13, and the friction between the bolt 16 and the fixed plate 13 prevents the disc 15 from rotating, thereby improving the stability of the worm 12, preventing the worm wheel 11 from rotating, and then preventing the connecting rod 24 and the blade 7 from rotating through the transmission mechanism; the stability is improved.

[0025] like Figure 3 and Figure 6 The upper part of the air supply pipe 17 is connected to the chamber of the protective cover 2, and the output end of the air supply pipe 17 is connected to the dust removal box 18. The dust removal box 18 is provided with a filter cloth. The upper part of the return pipe 19 is connected to the dust removal box 18, and the output end of the return pipe 19 is connected to the chamber of the protective cover 2 through the air pump 20. When it is necessary to reduce the concentration of dust in the chamber of the protective cover 2, turn on the air pump 20 to allow the air in the chamber of the protective cover 2 to enter the dust removal box 18 through the air supply pipe 17, and then the air is filtered out of dust through the filter cloth and enters the chamber of the protective cover 2 again through the return pipe 19 and the air pump 20, thereby reducing the concentration of dust in the chamber of the protective cover 2, and the safety is high. A handle is provided on the hand wheel 14.

[0026] Example 2

[0027] On the basis of Example 1, a nitrogen storage tank 21 and a pressure relief pipe 22 are additionally provided, an exhaust pipe is provided on the nitrogen storage tank 21, a valve is provided on the exhaust pipe, the output end of the exhaust pipe is connected with the lower part of the chamber of the protective cover 2, the nitrogen storage tank 21 is installed on the mounting plate 1, the pressure relief pipe 22 is installed on the upper part of the protective cover 2, the lower end of the pressure relief pipe 22 is connected with the chamber of the protective cover 2, and a one-way valve is provided on the pressure relief pipe 22; compressed nitrogen is stored in the nitrogen storage tank 21, when it is necessary to reduce the concentration of oxygen in the chamber of the protective cover 2, the valve on the exhaust pipe is opened, and the nitrogen enters the chamber of the protective cover 2 through the exhaust pipe, thereby reducing the concentration of oxygen in the chamber of the protective cover 2, improving the conditions for combustion of combustibles, making the combustibles difficult to burn, and improving safety.

[0028] It should be additionally explained that the protective cover 2, the rotating shaft 9, the transmission shaft 10, the eccentric wheel 23, the connecting rod 24 and the worm wheel 11 in this case are all made of insulating materials.

[0029] The protective cover 2, sealing door 3, conductive shaft 5, blade 7, dust removal box 18, air pump 20 and nitrogen storage tank 21 of the operating mechanism of the switch device of the utility model are all purchased on the market. The technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative efforts.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An operating mechanism of a switch device, comprising a mounting plate (1), a protective cover (2), a sealing door (3), two sets of conductive shafts (5), two sets of terminal A (6), two sets of blades (7), a connecting rod (24) and two sets of terminal B (8), wherein the protective cover (2) is fixedly mounted on the mounting plate (1), a chamber is arranged inside the protective cover (2), a take-in and put-out opening is arranged at the front end of the protective cover (2), the sealing door (3) is mounted on the outside of the take-in and put-out opening, the two sets of conductive shafts (5) are rotatably mounted on the two sets of terminal A (6), the two sets of terminal A (6) are fixedly mounted on the lower part of the chamber of the protective cover (2), the lower parts of the two sets of blades (7) are fixedly mounted on the two sets of conductive shafts (5), the upper parts of the two sets of blades (7) are fixedly connected to the connecting rod (24), and the two sets of terminal B (8) are fixedly mounted on the upper part of the chamber of the protective cover (2); characterized in that The invention also comprises a rotating shaft (9), a transmission mechanism and a driving mechanism. The left and right ends of the rotating shaft (9) are respectively fixedly mounted on the two sets of conductive shafts (5). The rotating shaft (9) is coaxial with the two sets of conductive shafts (5). The connecting rod (24) is connected to the driving mechanism through the transmission mechanism. The driving mechanism is mounted on the outer wall of the protective cover (2). The driving mechanism is used to drive the transmission mechanism to rotate. The transmission mechanism is used to drive the conductive shafts (5) to rotate.

2. An operating mechanism of a switch device according to claim 1, characterized in that: The transmission mechanism comprises a transmission shaft (10) and an eccentric wheel (23); the transmission shaft (10) is rotatably mounted on the protective cover (2); the right end of the transmission shaft (10) is fixedly connected to one end of the eccentric wheel (23) away from the center of the circle; the other end of the eccentric wheel (23) away from the center of the circle is fixedly connected to the left end of a connecting rod (24); the left end of the transmission shaft (10) is located outside the protective cover (2); and the left end of the transmission shaft (10) is connected to the driving mechanism.

3. An operating mechanism of a switch device according to claim 2, characterized in that: The driving mechanism comprises a worm wheel (11), a worm (12), a fixing plate (13) and a hand wheel (14); the worm wheel (11) is fixedly mounted on the left end of the transmission shaft (10); the worm wheel (11) is meshed with the worm (12); the worm (12) is rotatably mounted on the fixing plate (13); the fixing plate (13) is fixedly mounted on the protective cover (2); and the hand wheel (14) is fixedly mounted on the worm (12).

4. An operating mechanism of a switch device according to claim 3, characterized in that: It also includes a disc (15) and a bolt (16), wherein the disc (15) is fixedly mounted on the lower part of the worm (12), the disc (15) is located below the fixing plate (13), and the bolt (16) is screwed onto the disc (15).

5. The operating mechanism of a switch device according to claim 1, characterized in that: It also comprises an air supply pipe (17), a dust removal box (18), a return pipe (19) and an air pump (20); the upper part of the air supply pipe (17) is in communication with the chamber of the protective cover (2); the output end of the air supply pipe (17) is in communication with the dust removal box (18); a filter cloth is arranged in the dust removal box (18); the upper part of the return pipe (19) is in communication with the dust removal box (18); and the output end of the return pipe (19) is in communication with the chamber of the protective cover (2) via the air pump (20).

6. The operating mechanism of a switch device according to claim 1, characterized in that: It also comprises a nitrogen storage tank (21) and a pressure relief pipe (22); the nitrogen storage tank (21) is provided with an exhaust pipe, the exhaust pipe is provided with a valve, the output end of the exhaust pipe is communicated with the lower part of the chamber of the protective cover (2); the nitrogen storage tank (21) is mounted on the mounting plate (1), the pressure relief pipe (22) is mounted on the upper part of the protective cover (2), the lower end of the pressure relief pipe (22) is communicated with the chamber of the protective cover (2), and the pressure relief pipe (22) is provided with a one-way valve.

7. An operating mechanism of a switch device according to claim 3, characterized in that: The hand wheel (14) is provided with a handle.

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