An operating mechanism of a strip isolating switch

Abstract

The present invention relates to the technical field of electrical switches, and discloses an operating mechanism of a strip-type isolating switch, comprising: a shell, in which a plurality of contacts are arranged, and a push plate is slidably installed in the shell, and a plurality of main knife switches are arranged on the push plate. The present invention drives the second gear to rotate synchronously by manually toggling a toggle handle, and then the second support member is rotated by cooperating with a compression spring through a rotating shaft and a clamping member, and at the same time, the movement of the rotating shaft drives the pull plate to move, thereby driving the push plate to open and close the switch, and when the rotating shaft swings to the other side through the critical point of rotation of the second support member, the compressed spring releases energy, thereby quickly allowing the rotating shaft to drive the pull plate and the push plate to move, so that the main knife switch and the contacts can be quickly opened and closed, and when the opening and closing speed is increased, the distance between the contacts and the main knife switch increases more in the same time, which makes the arc quickly elongated, making the arc easier to extinguish, thereby improving the arc extinguishing effect.

Description

Technical Field

[0001] The invention relates to the technical field of electrical switches, and in particular to an operating mechanism of a strip-type isolating switch. Background Art

[0002] As a key component in the power system, the core function of the strip disconnector is to accurately control the opening and closing operations of the disconnector through its operating mechanism. This operating mechanism, as an important part of the mechanical device, can be manual, driven directly by the operator through a handle, lever, etc., or electric, using a power source such as a motor to achieve automatic control;

[0003] In the manual operation mode, the operator can directly drive the isolating switch through mechanical devices such as handles or levers, but this method often has the problems of slow operation speed and long stroke. The longer handle stroke means that the operator needs to move a larger distance to complete the opening and closing operations, which not only increases the volume of the entire device, but also causes the contact opening and closing speed to be slower, thereby generating an arc in the contact gap, thereby burning the contacts and damaging the circuit. Based on this, the present invention purposely provides an operating mechanism for a strip isolating switch that can increase the opening and closing speed and effectively limit and extinguish the arc. Summary of the invention

[0004] The purpose of the present invention is to provide an operating mechanism of a strip-type isolating switch to solve the technical problems in the prior art in view of the deficiencies in the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An operating mechanism of a strip-type isolating switch, comprising:

[0007] A shell, wherein a plurality of contacts are arranged inside, and a push plate is slidably installed inside, a plurality of main knife switches are arranged on the push plate, and an extension plate is fixedly installed on the push plate, each main knife switch corresponds to a contact, and the switch is closed when the main knife switch approaches the extension plate, and the switch is opened when the main knife switch moves away from the extension plate, a pull plate is rotatably installed on the push plate, and a straight groove is opened on the pull plate, a first gear, a second gear and a second support member are rotatably installed in the shell, the first gear and the second gear are meshed, a trigger handle is fixedly installed on the first gear, one end of the trigger handle extends to the top of the shell, a first support member is fixedly installed on the second gear, a clamping member is connected to the second support member through a spring, the clamping member is slidably connected to the second support member, the pre-tightening force of the spring makes the clamping member move away from the second support member, the clamping member is rotatably connected to the first support member, and a rotating shaft is inserted at the rotating joint of the two, and the rotating shaft is fixedly installed in the straight groove;

[0008] When the toggle handle is turned, the first gear drives the second gear to rotate. The rotation of the second gear cooperates with the compression spring through the rotating shaft and the clamping part to rotate the second support part. At the same time, the rotating shaft drives the pull plate to move, and the movement of the pull plate drives the push plate to open and close the switch. When the rotating shaft passes the critical point of the rotating shaft of the second support part and swings to the other side, the spring releases energy.

[0009] As a further solution of the present invention: a fixed box is fixedly installed in the shell, a slide groove is opened in the fixed box, a U-shaped plate is slidably installed in the slide groove, the U-shaped plate is driven by a driving assembly to reciprocate, a plurality of arc extinguishing assemblies are fixedly installed on the U-shaped plate, and each arc extinguishing assembly corresponds to a contact.

[0010] As a further solution of the present invention: the driving assembly includes a round rod, a connecting rod, a rotating wheel, a round block and a second linkage assembly, the round rod is fixedly mounted on the U-shaped plate, the rotating wheel is rotatably mounted on the fixed box, and it is connected to the second linkage assembly, when the push plate is opened and closed, the push plate moves through the second linkage assembly to drive the rotating wheel to rotate, the round block is eccentrically fixed on the rotating wheel, one end of the connecting rod is rotatably mounted on the round rod, and the other end of the connecting rod is rotatably mounted on the round block.

[0011] As a further solution of the present invention: the second linkage assembly includes a first transmission gear and a first rack plate, the first transmission gear is rotatably installed in the fixed housing, and is coaxially fixedly connected to the rotating wheel, the first rack plate is slidably installed in the fixed housing, and is fixedly connected to the extension plate, and the first rack plate is meshed with the first transmission gear.

[0012] As a further solution of the present invention: a plurality of rotating rods are rotatably installed on the fixed box body, and the rotating rods are driven to rotate by the first linkage assembly. Each rotating rod is provided with two symmetrically arranged fan cloths, and each fan cloth corresponds to a contact. When the first linkage assembly drives the rotating rod to rotate, the fan cloth fans the air to flow between the contact and the main knife switch.

[0013] As a further solution of the present invention: the fan cloth is made of a high temperature resistant flexible special material, and both ends of each fan cloth are fixedly connected with support rods, and the support rods are fixedly connected to the outer circumferential surface of the rotating rod.

[0014] As a further solution of the present invention: the first linkage assembly includes a second transmission gear and a second rack plate, and multiple second transmission gears are respectively rotatably installed in the fixed box, each second transmission gear is coaxially fixedly connected to a rotating rod, the second rack plate is slidably installed in the fixed box, which is fixedly connected to the extension plate, and each second transmission gear is meshed with the second rack plate.

[0015] As a further solution of the present invention: a locking assembly is provided on the housing, and the locking assembly is connected to the toggle handle. When the main knife switch and the contacts are opened or closed, the locking assembly fixes the position of the toggle handle.

[0016] As a further solution of the present invention: an elastic buffer pad is provided on the shell, and a recess is provided on the elastic buffer pad, and a convex portion is provided on the push plate. When the gate is opened, the push plate abuts against the elastic buffer pad, and the convex portion on the push plate cooperates with the recess on the shell.

[0017] Beneficial effects of the present invention:

[0018] 1. In the present invention, the first gear is rotated by manually pulling the trigger handle, thereby driving the second gear to rotate synchronously, and then the second support member is rotated by the rotation shaft and the clamping member in cooperation with the compression spring. At the same time, the movement of the rotation shaft will drive the pull plate to move, and the movement of the pull plate will drive the push plate to open and close the switch. When the rotation shaft passes the critical point of the rotation of the second support member and swings to the other side, the compressed spring will release energy, thereby quickly allowing the rotation shaft to drive the pull plate and the push plate to move, so that the main knife switch and the contact can be quickly opened and closed. When the opening and closing speed is increased, the distance between the contact and the main knife switch increases more in the same time, which makes the arc quickly elongated, making it easier to extinguish the arc, thereby improving the arc extinguishing effect;

[0019] 2. In the present invention, by setting the arc extinguishing assembly, an arc will be generated at the moment when the main switch and the contact are opened and closed, and the arc will be attracted by the arc extinguishing assembly, and the driving assembly can drive the U-shaped plate to move back and forth, so that the arc extinguishing assembly can move back and forth, compared with a fixed arc extinguishing assembly, the arc can be continuously pulled, thereby improving the efficiency of extinguishing the arc;

[0020] 3. In the present invention, when the first linkage assembly drives the rotating rod to rotate, the fan cloth fans the air to flow between the contact and the main knife switch, and the fast-flowing air can forcefully cool the arc and reduce the temperature of the arc. When the arc temperature drops, the movement speed of the ions inside it slows down, the degree of ionization decreases, and the conductivity of the arc weakens, which is conducive to the extinction of the arc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure inside the shell of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the contact in the present invention;

[0025] Figure 4 is a schematic structural diagram of the second gear in the present invention;

[0026] Figure 5 It is a structural schematic diagram of a fixed box in the present invention;

[0027] Figure 6 It is a structural schematic diagram of a cross-section of a fixed box body in the present invention;

[0028] Figure 7 It is a structural schematic diagram of the transfer rod of the present invention.

[0029] In the figure: 1. housing; 2. lever handle; 3. first gear; 4. second gear; 5. first support member; 6. rotating shaft; 7. clamping member; 8. spring; 9. second support member; 10. push plate; 11. pull plate; 12. straight groove; 13. extension plate; 14. contact; 15. fixed box; 16. arc extinguishing assembly; 17. slide groove; 18. U-shaped plate; 19. round rod; 20. connecting rod; 21. rotating wheel; 22. round block; 23. first rack plate; 24. first transmission gear; 25. rotating rod; 26. fan cloth; 27. second transmission gear; 28. second rack plate; 29. ​​support rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 7 As shown, the present invention is an operating mechanism of a strip-type isolating switch, comprising:

[0032] A housing 1 is provided with a plurality of contacts 14, and a push plate 10 is slidably installed therein, a plurality of main knife gates are arranged on the push plate 10, and an extension plate 13 is fixedly installed on the push plate 10, each main knife gate corresponds to a contact 14, when the main knife gate approaches the extension plate 13, the switch is closed, and when the main knife gate is away from the extension plate 13, the switch is opened, a pull plate 11 is rotatably installed on the push plate 10, and a straight groove 12 is opened on the pull plate 11, and a first gear 3, a second gear 4 and a second support member 9 are rotatably installed in the housing 1, and the first gear 3 and The second gear 4 is meshed, a trigger handle 2 is fixedly mounted on the first gear 3, one end of the trigger handle 2 extends to the top of the housing 1, a first support member 5 is fixedly mounted on the second gear 4, a clip member 7 is connected to the second support member 9 via a spring 8, the clip member 7 is slidably connected to the second support member 9, the pre-tightening force of the spring 8 makes the clip member 7 away from the second support member 9, the clip member 7 is rotatably connected to the first support member 5, and a rotating shaft 6 is inserted at the rotating joint of the two, and the rotating shaft 6 is fixedly mounted in the straight groove 12;

[0033] When the toggle handle 2 is turned, the first gear 3 drives the second gear 4 to rotate. The rotation of the second gear 4 cooperates with the compression spring 8 through the rotating shaft 6 and the clamping member 7 to rotate the second support member 9. At the same time, the rotating shaft 6 drives the pull plate 11 to move. The movement of the pull plate 11 drives the push plate 10 to open and close the switch. When the rotating shaft 6 passes the critical point of the rotating shaft of the second support member 9 and swings to the other side, the spring 8 releases energy.

[0034] The working principle of the present invention is as follows: when the main knife switch on the push plate 10 is close to the contact 14, the whole device is in the closed state, and when the main knife switch is away from the contact 14, the whole device is in the open state; when the opening and closing operation is required, the pull handle 2 is manually turned to rotate the first gear 3, and the first gear 3 and the second gear 4 are meshed, so that the second gear 4 can be driven to rotate synchronously, and the second gear 4 moves the first support member 5, and then the second support member 9 is rotated by the compression spring 8 in cooperation with the rotating shaft 6 and the clamping member 7, and at the same time, the movement of the rotating shaft 6 will drive the pull plate 11 to move, and the movement of the pull plate 11 will drive the push plate 10 to open and close, and when the rotating shaft 6 passes the critical point of rotation of the second support member 9 and swings to the other side, the compressed spring 8 will release energy, so that the rotating shaft 6 can quickly drive the pull plate 11 and the push plate 10 to move, so that the main knife switch and the contact 14 can be quickly opened and closed, and because the spring 8 releases energy When the rotating shaft 6 is pushed to move quickly and actively, it will react on the first support member 5, so that the first support member 5 drives the second gear 4 to rotate, and the second gear 4 drives the first gear 3 to rotate, so that the second half of the stroke of the pull handle 2 does not need to be turned, and this structure can shorten the stroke of the pull handle 2 by half. When performing the opening and closing operation, the time required for the operator to operate the pull handle 2 will be reduced, and the spring 8 will be compressed when the pull handle 2 is manually turned. When the opening and closing operation is about to be performed, the spring 8 will release energy, and the rebound force will accelerate the movement of the push plate 10, thereby performing rapid opening and closing. When the opening and closing speed increases, the distance between the contact 14 and the main knife switch increases more in the same time, which makes the arc rapidly elongated. During the elongation process, the potential gradient of the arc will decrease rapidly, and the contact area with the surrounding medium will increase, thereby enhancing the cooling and diffusion effects, making the arc easier to extinguish, thereby improving the arc extinguishing effect.

[0035] like Figure 1-Figure 5 As shown, as a preferred embodiment of the present invention, a fixed box body 15 is fixedly installed in the shell 1, a slide groove 17 is opened in the fixed box body 15, a U-shaped plate 18 is slidably installed in the slide groove 17, and the U-shaped plate 18 is driven by a driving assembly to reciprocate, and a plurality of arc extinguishing assemblies 16 are fixedly installed on the U-shaped plate 18, and each arc extinguishing assembly 16 corresponds to a contact 14.

[0036] In one case of this embodiment, the arc extinguishing component 16 can be made of metal arc extinguishing grids, arc extinguishing covers and other components, and can also be made of magnetic blowing coils, iron cores, magnetic conductive clamps and arc guide angles to form an electromagnetic coil auxiliary arc extinguishing device, which is not specifically limited in this embodiment.

[0037] When this embodiment is actually used, an arc will be generated when the main knife switch and the contact 14 are opened and closed, and the arc will be attracted by the arc extinguishing component 16. The driving component can drive the U-shaped plate 18 to move back and forth, thereby allowing the arc extinguishing component 16 to move back and forth. Compared with the fixed arc extinguishing component 16, the arc can be continuously pulled, thereby improving the efficiency of extinguishing the arc.

[0038] like Figure 1-Figure 5 As shown, as a preferred embodiment of the present invention, the driving assembly includes a round rod 19, a connecting rod 20, a rotating wheel 21, a round block 22 and a second linkage assembly, the round rod 19 is fixedly mounted on the U-shaped plate 18, the rotating wheel 21 is rotatably mounted on the fixed box 15, and it is connected to the second linkage assembly, when the push plate 10 is opened and closed, the push plate 10 moves through the second linkage assembly to drive the rotating wheel 21 to rotate, the round block 22 is eccentrically fixed on the rotating wheel 21, one end of the connecting rod 20 is rotatably mounted on the round rod 19, and the other end of the connecting rod 20 is rotatably mounted on the round block 22.

[0039] In actual application of this embodiment, the second linkage assembly drives the rotating wheel 21 to rotate, and the rotation of the rotating wheel 21 drives the round block 22 to move. Since the round block 22 is eccentrically mounted on the rotating wheel 21, the rotation of the rotating wheel 21 causes the connecting rod 20 to push and pull the round rod 19 back and forth, thereby driving the U-shaped plate 18 to move back and forth, and further driving the arc extinguishing assembly 16 to change its position.

[0040] like Figure 5-Figure 6 As shown, as a preferred embodiment of the present invention, the second linkage assembly includes a first transmission gear 24 and a first rack plate 23, the first transmission gear 24 is rotatably installed in the fixed box 15, and it is coaxially fixedly connected to the rotating wheel 21, the first rack plate 23 is slidably installed in the fixed box 15, and it is fixedly connected to the extension plate 13, and the first rack plate 23 is meshed with the first transmission gear 24.

[0041] When this embodiment is actually used, the push plate 10 moves to drive the switch opening and closing, and the movement of the push plate 10 will drive the extension plate 13 to move, and the extension plate 13 makes the first rack plate 23 move, and the first rack plate 23 is engaged with the first transmission gear 24, so the movement of the first rack plate 23 can drive the first transmission gear 24 to rotate, and the first transmission gear 24 will make the wheel 21 rotate, and the spring 8 will accelerate the movement of the push plate 10 after releasing energy to perform rapid opening and closing, which means that the extension plate 13 will accelerate the movement, thereby accelerating the rotation of the first transmission gear 24, which can accelerate the reciprocating speed of the U-shaped plate 18 and the arc extinguishing assembly 16, and make the arc pulling rate of the arc extinguishing assembly 16 faster, which is beneficial to the extinguishing of the arc.

[0042] like Figure 1-Figure 7As shown, as a preferred embodiment of the present invention, a plurality of rotating rods 25 are rotatably mounted on the fixed box body 15, and the rotating rods 25 are driven to rotate by the first linkage assembly. Two symmetrically arranged fan cloths 26 are provided on each rotating rod 25, and each fan cloth 26 corresponds to a contact 14. When the first linkage assembly drives the rotating rod 25 to rotate, the fan cloth 26 fans the air to flow between the contact 14 and the main knife switch.

[0043] In actual application of this embodiment, when the first linkage assembly drives the rotating rod 25 to rotate, the fan cloth 26 fans the air to flow between the contact 14 and the main knife switch, and the fast-flowing air can forcefully cool the arc and reduce the temperature of the arc. When the arc temperature drops, the movement speed of the ions inside it slows down, the degree of ionization decreases, and the conductivity of the arc weakens, which is conducive to the extinction of the arc.

[0044] like Figure 7 As shown, as a preferred embodiment of the present invention, the fan cloth 26 is made of a high temperature resistant flexible special material, and both ends of each fan cloth 26 are fixedly connected with a support rod 29, and the support rod 29 is fixedly connected to the outer circumferential surface of the rotating rod 25.

[0045] In actual application of this embodiment, the fan cloth 26 is connected by two support rods 29, and the fan cloth 26 is a special high-temperature resistant flexible material. The surface area of ​​the flexible material is large and can better capture and stir the air. As the rotating rod 25 rotates, the fan cloth 26 will continuously cut and push the surrounding air. Compared with the fan cloth 26 with a smooth surface material, the fan cloth 26 made of flexible material can generate large airflow and wind, thereby improving the arc extinguishing effect, and the fan cloth 26 is resistant to high temperatures and can prevent being punctured by the arc.

[0046] like Figure 1-Figure 6 As shown, as a preferred embodiment of the present invention, the first linkage assembly includes a second transmission gear 27 and a second rack plate 28, and multiple second transmission gears 27 are rotatably installed in the fixed box body 15, each second transmission gear 27 is coaxially fixedly connected to a rotating rod 25, and the second rack plate 28 is slidably installed in the fixed box body 15, which is fixedly connected to the extension plate 13, and each second transmission gear 27 is meshed with the second rack plate 28.

[0047] In actual application of this embodiment, the movement of the push plate 10 drives the main knife switch and the contact 14 to open and close, and the movement of the push plate 10 drives the extension plate 13 to move, and the extension plate 13 drives the second rack plate 28 to move synchronously, and the second rack plate 28 is engaged with the second transmission gear 27, so the second rack plate 28 will rotate and cause the rotating rod 25 to rotate, thereby causing the fan cloth 26 to rotate and fan the air, and after the spring 8 releases energy, it will accelerate the movement of the push plate 10 to perform rapid opening and closing, which means that the extension plate 13 will accelerate the movement, thereby causing the second transmission gear 27 to accelerate rotation, and compared with the uniform rotation of the rotating rod 25, the sudden acceleration can allow the fan cloth 26 to generate stronger airflow and wind, thereby allowing stronger airflow and wind to pass through the arc at the moment the arc is generated, thereby accelerating the arc extinguishing process.

[0048] like Figure 1-Figure 7 As shown, as a preferred embodiment of the present invention, a locking assembly is provided on the housing 1, and the locking assembly is connected to the trigger handle 2. When the main knife switch and the contact 14 are opened or closed, the locking assembly fixes the position of the trigger handle 2.

[0049] In one case of this embodiment, the locking assembly can be abutted blocks driven by a driving source, with mounting seats and connecting seats, and other components that can lock the pull handle 2. This embodiment does not make specific limitations here.

[0050] In actual application of this embodiment, when the main knife switch and the contact 14 are opened and closed, the locking assembly fixes the position of the pull handle 2 to avoid accidental opening and closing operations caused by misoperation. The locking effect of the locking assembly on the pull handle 2 must be released before the opening and closing operations are performed.

[0051] like Figure 1-Figure 7 As shown, as a preferred embodiment of the present invention, an elastic buffer pad is provided on the shell 1, and a recess is provided thereon, and a convex portion is provided on the push plate 10. When the gate is opened, the push plate 10 abuts against the elastic buffer pad, and the convex portion on the push plate 10 cooperates with the recess on the shell 1.

[0052] In actual application of this embodiment, since the force generated by the spring 8 is very large when the switch is opened, an elastic buffer pad is arranged between the shell 1 and the push plate 10, so that the push plate 10 hits the elastic buffer pad when the switch is opened, thereby protecting the shell 1, and a convex portion is arranged on the push plate 10, and a concave portion is arranged on the shell 1. After the switch is opened, the convex portion and the concave portion cooperate to prevent the push plate 10 from hitting the elastic buffer pad and rebounding, resulting in a problem of a smaller distance between the main knife switch and the contact 14.

[0053] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An operating mechanism of a strip-type isolating switch, characterized in that: include: A housing (1) is provided with a plurality of contacts (14) therein, and a push plate (10) is slidably mounted therein, a plurality of main knife switches are arranged on the push plate (10), and an extension plate (13) is fixedly mounted on the push plate (10), each main knife switch corresponds to a contact (14), when the main knife switch approaches the extension plate (13), the switch is closed, and when the main knife switch moves away from the extension plate (13), the switch is opened, a pull plate (11) is rotatably mounted on the push plate (10), and a straight groove (12) is formed on the pull plate (11), and a first gear (3), a second gear (4) and a second support member (9) are rotatably mounted in the housing (1), the first gear (3) and the second support member (9) are rotatably mounted in the housing (1), The gears (4) are meshed, a trigger handle (2) is fixedly mounted on the first gear (3), one end of the trigger handle (2) extends to the top of the housing (1), a first support member (5) is fixedly mounted on the second gear (4), a clamping member (7) is connected to the second support member (9) via a spring (8), the clamping member (7) is slidably connected to the second support member (9), the pre-tightening force of the spring (8) causes the clamping member (7) to move away from the second support member (9), the clamping member (7) is rotatably connected to the first support member (5), and a rotating shaft (6) is inserted at the rotating joint of the two, and the rotating shaft (6) is fixedly mounted in the straight groove (12); When the toggle handle (2) is turned, the first gear (3) drives the second gear (4) to rotate. The rotation of the second gear (4) cooperates with the compression spring (8) through the rotating shaft (6) and the clamping member (7) to rotate the second support member (9). At the same time, the rotating shaft (6) drives the pull plate (11) to move. The movement of the pull plate (11) drives the push plate (10) to open and close the switch. When the rotating shaft (6) passes the critical point of the rotating shaft of the second support member (9) and swings to the other side, the spring (8) releases energy.

2. The operating mechanism of a strip-type isolating switch according to claim 1, characterized in that: A fixed box body (15) is fixedly mounted in the housing (1), a slide groove (17) is provided in the fixed box body (15), a U-shaped plate (18) is slidably mounted in the slide groove (17), the U-shaped plate (18) is driven by a driving assembly to reciprocate, a plurality of arc extinguishing assemblies (16) are fixedly mounted on the U-shaped plate (18), and each arc extinguishing assembly (16) corresponds to a contact (14).

3. The operating mechanism of the strip-type isolating switch according to claim 2, characterized in that: The driving assembly comprises a round rod (19), a connecting rod (20), a rotating wheel (21), a round block (22) and a second linkage assembly, wherein the round rod (19) is fixedly mounted on the U-shaped plate (18), the rotating wheel (21) is rotatably mounted on the fixed housing (15) and is connected to the second linkage assembly, and when the push plate (10) is opened or closed, the push plate (10) moves through the second linkage assembly to drive the rotating wheel (21) to rotate, the round block (22) is eccentrically fixedly mounted on the rotating wheel (21), one end of the connecting rod (20) is rotatably mounted on the round rod (19), and the other end of the connecting rod (20) is rotatably mounted on the round block (22).

4. The operating mechanism of the strip-type isolating switch according to claim 3, characterized in that: The second linkage assembly comprises a first transmission gear (24) and a first rack plate (23); the first transmission gear (24) is rotatably mounted in a fixed housing (15) and is coaxially fixedly connected to the rotating wheel (21); the first rack plate (23) is slidably mounted in the fixed housing (15) and is fixedly connected to the extension plate (13); the first rack plate (23) is meshed with the first transmission gear (24).

5. The operating mechanism of a strip-type isolating switch according to claim 2, characterized in that: A plurality of rotating rods (25) are rotatably mounted on the fixed housing (15). The rotating rods (25) are driven to rotate by a first linkage assembly. Each rotating rod (25) is provided with two symmetrically arranged fan cloths (26). Each fan cloth (26) corresponds to a contact (14). When the first linkage assembly drives the rotating rod (25) to rotate, the fan cloths (26) fan air to flow between the contact (14) and the main switch.

6. The operating mechanism of the strip-type isolating switch according to claim 5, characterized in that: The fan cloth (26) is made of a high-temperature resistant flexible special material. Both ends of each fan cloth (26) are fixedly connected to a support rod (29), and the support rod (29) is fixedly connected to the outer circumferential surface of the rotating rod (25).

7. The operating mechanism of the strip-type isolating switch according to claim 5, characterized in that: The first linkage assembly comprises a second transmission gear (27) and a second rack plate (28); a plurality of the second transmission gears (27) are rotatably mounted in a fixed housing (15); each second transmission gear (27) is coaxially fixedly connected to a rotating rod (25); the second rack plate (28) is slidably mounted in the fixed housing (15); it is fixedly connected to the extension plate (13); and each second transmission gear (27) is meshed with the second rack plate (28).

8. The operating mechanism of a strip-type isolating switch according to claim 1, characterized in that: The housing (1) is provided with a locking assembly, which is connected to the toggle handle (2). When the main switch and the contact (14) are opened or closed, the locking assembly fixes the position of the toggle handle (2).

9. The operating mechanism of a strip-type isolating switch according to claim 1, characterized in that: The housing (1) is provided with an elastic buffer pad, and a recess is provided thereon, and the push plate (10) is provided with a convex portion. When the gate is opened, the push plate (10) abuts against the elastic buffer pad, and the convex portion on the push plate (10) cooperates with the recess on the housing (1).

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