A mine-used electric isolating switch

Abstract

The present application relates to the technical field of disconnect switches, and discloses a mine-used electric disconnect switch, which includes a base. A moving contact assembly is rotatably connected to the base. A static contact is provided on the base. An electric drive source is provided on the base. A rotating rod is rotatably connected to the electric drive source. A connecting portion for connecting a manual drive source and used for driving rotation is further provided on the rotating rod. A transmission structure is provided on the rotating rod. The transmission structure is communicated with the moving contact assembly. In the present application, the electric drive source drives the rotating rod to rotate. The transmission structure is provided on the rotating rod, so that the transmission structure drives the moving contact assembly to rotate, thereby enabling the disconnect switch to be electrically switched on and off, improving the operation efficiency of the disconnect switch. The staff can drive multiple disconnect switches at one time through the electric drive source; at the same time, since a connecting portion is further provided on the rotating rod, the connecting portion is for connecting the manual drive source, enabling the staff to also rotate the rotating member through the manual drive source to realize the switching on and off operation of the disconnect switch.

Description

Technical Field

[0001] This application relates to the technical field of disconnect switches, and particularly to an electric disconnect switch for mining use. Background Art

[0002] A disconnect switch is an electrical device that plays an important role in the power system. Some disconnect switches are applied on the ground, and some are applied in mines. Compared with the disconnect switches on the ground, the mining disconnect switch has the characteristics of high isolation and smaller occupied space. The mining disconnect switch can be applied to structures such as feed switches.

[0003] In the related art, the disconnect switch includes a base, a moving contact assembly is rotatably connected to the base, and a static contact is provided on the base. When the moving contact assembly rotates, the moving contact assembly abuts against the static contact to realize the connection of the disconnect switch.

[0004] Since the disconnect switch requires the staff to manually drive the moving contact assembly to rotate, but in underground mining, the operation of manually driving the moving contact assembly to rotate is rather troublesome, the operation efficiency of the disconnect switch is low, and it is difficult for the staff to drive multiple disconnect switches at one time. The operation efficiency of opening and closing the disconnect switch needs to be improved. Moreover, there may be a situation of improper manual operation when driving the disconnect switch, which may cause the moving contact assembly and the static contact not to be in place, resulting in the situation of the disconnect switch being burned out and affecting the normal use of the disconnect switch. Summary of the Invention

[0005] In order to improve the problem of the improper contact in the operation of the manual disconnect switch, this application provides an electric disconnect switch for mining use.

[0006] An electric disconnect switch for mining use provided by this application adopts the following technical solution:

[0007] An electric disconnect switch for mining use includes a base, a moving contact assembly is rotatably connected to the base, a static contact is provided on the base, an electric drive source is provided on the base, a rotating rod is rotatably connected to the electric drive source, a connecting part for connecting a manual drive source and used for driving rotation is further provided on the rotating rod, a transmission structure is provided on the rotating rod, and the transmission structure communicates with the moving contact assembly. When the electric drive source drives the rotating rod to rotate, the transmission structure drives the moving contact assembly to rotate.

[0008] By adopting the above technical solution, the electric drive source drives the rotating rod to rotate. A transmission structure is provided on the rotating rod, which drives the moving contact assembly to rotate. The moving contact assembly abuts against or separates from the static contact, realizing the closing or opening of the disconnecting switch. Thus, the disconnecting switch can be electrically opened and closed, improving the operating efficiency of the disconnecting switch. The staff can drive multiple disconnecting switches at one time through the electric drive source. At the same time, since a connecting part is also provided on the rotating rod, the connecting part is for connecting the manual drive source, enabling the staff to also rotate the rotating part through the manual drive source to realize the opening and closing operations of the disconnecting switch. At the same time, driven by the electric drive source, the moving contact assembly is evenly stressed and rotates smoothly, and when reaching the opening and closing positions in terms of structure, the electric drive source stops operating to ensure the reliability and safety of the opening and closing operations.

[0009] Optionally, the electric drive source includes a rotating motor. A control module for detecting the opening and closing of the switch is provided on the rotating motor. A rotor is rotatably connected to the rotating motor. A first receiving plate and a second receiving plate are provided on the rotating motor. The rotor, the first receiving plate, and the second receiving plate are all electrically connected to the control module. The first receiving plate and the second receiving plate are both located in the rotation path of the rotor. When the disconnecting switch is closed, the rotor abuts against the first receiving plate. When the disconnecting switch is opened, the rotor abuts against the second receiving plate.

[0010] By adopting the above technical solution, since a rotor is rotatably connected to the rotating motor, the rotating motor drives the rotor to rotate. The first receiving plate and the second receiving plate are both located in the rotation path of the rotor, enabling the rotor to abut against the first receiving plate or the second receiving plate. Coupled with the fact that the control module is electrically connected to the rotor, the first receiving plate, and the second receiving plate, the control module can obtain an electrical signal and know the state of the disconnecting switch being closed or open, enabling the control module to transmit the electrical signal to subsequent devices so that the staff can know the state of the disconnecting switch.

[0011] Optionally, a support plate is provided on the rotating motor. The support plate is located on the side of the rotor away from the rotating motor.

[0012] By adopting the above technical solution, with the support plate located on the side of the rotor away from the rotating motor, the rotor can rotate stably, reducing the interference of external objects on the rotation process of the rotor, making the rotor more stable when abutting against the first receiving plate or the second receiving plate. At the same time, it avoids the separation of the rotor and the rotating motor, further strengthening the firmness between the rotor and the rotating motor and improving the installation firmness of the rotor.

[0013] Optionally, the transmission structure includes a first transmission bar and a second transmission bar. The first transmission bar is fixedly connected to the rotating rod. The second transmission bar is rotatably connected to the first transmission bar. The second transmission bar is rotatably connected to the moving contact assembly.

[0014] By adopting the above technical solution, the rotating rod is driven to rotate by the electric drive source, and the rotating rod drives the first transmission strip to rotate. Since the second transmission strip is rotatably connected to the first transmission strip, the first transmission strip drives the second transmission strip to rotate, and the second transmission strip drives the moving contact assembly to rotate, so as to facilitate the subsequent abutment or separation of the moving contact assembly and the static contact; by rotatably connecting the second transmission strip to the moving contact assembly, compared with directly driving the moving contact assembly to rotate, the power arm of the second transmission strip is longer. According to the lever principle, the power of the second transmission strip is smaller, so that the second transmission strip can drive the moving contact assembly to rotate with a smaller acting force, enabling the electric drive source to drive the moving contact assembly to rotate more easily. Under the same acting force, in this solution, the electric drive source can drive the moving contact assembly to rotate more quickly, realizing the operation of rapid opening and closing.

[0015] Optionally, a handle is provided on the rotating rod, and the handle is used to manually rotate the rotating rod.

[0016] By adopting the above technical solution, the handle is arranged on the rotating rod, so as to facilitate the staff to manually separate the moving contact assembly and the static contact, and the staff can manually perform the opening or closing operation in case of emergency.

[0017] Optionally, mounting grooves are formed on the surfaces of opposite sides of the base, a mounting plate is provided on the base, a fastener is provided on the mounting plate, a mounting hole for the fastener to pass through is formed on the mounting plate, and the electric drive source is arranged on the mounting plate. When the fastener is inserted into the mounting groove, the mounting plate is fixed to the base.

[0018] By adopting the above technical solution, mounting grooves are formed on the surfaces of opposite sides of the base, so that the mounting plate can be randomly mounted on either side of the base. The fastener passes through the mounting hole and is inserted into the mounting groove to realize the mutual fixation of the mounting plate and the base, so as to facilitate the staff to adjust the position of the electric drive source according to the actual situation, make the disconnecting switch more adaptable to different spaces, and increase the adaptability of the disconnecting switch.

[0019] Optionally, a plurality of moving contact assemblies are provided, a connecting rod is provided on the base, the connecting rod connects the plurality of moving contact assemblies, and a plurality of washers capable of insulating are provided on the connecting rod, and the washers are located between adjacent two moving contact assemblies.

[0020] By adopting the above technical solution, since the disconnecting switch is for mine use and the overall volume of the disconnecting switch is small, when multiple moving contact assemblies are arranged on the connecting rod, the electrical distance between the multiple moving contact assemblies may not be sufficient. The washer is located between two adjacent moving contact assemblies. In addition, the washer is insulating, which increases the electrical distance between two adjacent moving contact assemblies, ensures the safety performance between two adjacent moving contact assemblies, and further improves the overall safety of the disconnecting switch.

[0021] Optionally, a support ring is integrally formed on the washer, a support seat is provided on the moving contact assembly, the support seat is sleeved on the connecting rod, and the support ring is located between the support seat and the connecting rod.

[0022] By adopting the above technical solution, since the support ring is located between the support seat and the connecting rod, and the support seat is sleeved on the connecting rod, the inner diameter of the support seat does not need to be too precise, reducing the machining accuracy of the support seat. Since the support ring is integrally formed on the washer, and the washer is made of insulating materials such as plastic, it is easier to injection mold the support ring, reducing the processing difficulty; at the same time, the washer is integrally formed on the support ring, enabling the washer and the support ring to be directly integrally formed without forming the washer and the support ring separately twice; and enabling the support ring to be fixed to the connecting rod through the washer, reducing the possibility of the support ring sliding out of the support seat along the connecting rod inside the support seat.

[0023] Optionally, the moving contact assembly includes two swing rods and two pressing pieces. The two swing rods are located between the two pressing pieces. A pin is provided on the pressing piece, the pin passes through the two swing rods and the two pressing pieces, and the pressing piece drives the swing rod to move towards the direction of the other swing rod.

[0024] By adopting the above technical solution, the pin passes through the two swing rods and the two pressing pieces, enabling the pressing piece to drive the swing rod to move towards the direction of the other swing rod, making the two swing rods more compact, so that the two swing rods can abut against the static contact, and enabling the moving contact assembly to abut against the static contact more stably.

[0025] Optionally, a plurality of gaskets are provided on the pin, and the gaskets are located in the direction away from the other pressing piece of the pressing piece.

[0026] By adopting the above technical solution, by setting different numbers of gaskets on the pin, the distance between the two pressing pieces can be adjusted. Since the thickness of the gasket is fixed, compared with adjusting with bolts and nuts, the distance between the two pressing pieces is not easily changed, thus avoiding the situation where the distance between the two pressing pieces changes due to the loosening of the nut.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. An electric drive source drives a rotating rod to rotate. A transmission structure is provided on the rotating rod, which drives a moving contact assembly to rotate. The moving contact assembly abuts or separates from a static contact, realizing the closing or opening of the disconnecting switch, so that the disconnecting switch can be electrically opened and closed, improving the operating efficiency of the disconnecting switch. The staff can drive multiple disconnecting switches at one time through the electric drive source; at the same time, since a connecting part is also provided on the rotating rod, the connecting part is for connecting a manual drive source, enabling the staff to also rotate the rotating part through the manual drive source to realize the opening and closing operations of the disconnecting switch.

[0029] 2. Since a rotor is rotatably connected to a rotating motor, the rotating motor drives the rotor to rotate. The first receiving plate and the second receiving plate are both located in the rotation path of the rotor, enabling the rotor to abut against the first receiving plate or the second receiving plate. Coupled with the control module being electrically connected to the rotor, the first receiving plate and the second receiving plate, the control module can obtain an electrical signal and know the state of the disconnecting switch being closed or open, enabling the control module to transmit the electrical signal to subsequent equipment so that the staff can know the state of the disconnecting switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0031] Figure 2 is an exploded schematic diagram highlighting the moving contact assembly in an embodiment of the present application;

[0032] Figure 3 is a schematic structural diagram highlighting a pin in an embodiment of the present application;

[0033] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0034] Figure 5 is an exploded schematic diagram highlighting a support base in an embodiment of the present application;

[0035] Figure 6 is an exploded schematic diagram highlighting a mounting plate in an embodiment of the present application;

[0036] Figure 7 is a schematic structural diagram highlighting a control module in an embodiment of the present application;

[0037] Figure 8 is a schematic structural diagram highlighting a rotor in an embodiment of the present application.

[0038] Reference signs: 1, base; 11, contact seat; 12, moving contact assembly; 121, swing rod; 122, extrusion piece; 123, extrusion groove; 124, swing block; 125, pin; 126, gasket; 127, support seat; 128, support hole; 129, pressing plate; 13, static contact; 14, arc extinguishing cover; 15, connecting rod; 151, washer; 152, support ring; 16, installation groove; 17, protective cover; 171, motor cover; 172, epoxy insulating plate; 2, mounting plate; 21, mounting hole; 211, fastener; 22, electric drive source; 221, support groove; 23, transmission structure; 231, first transmission bar; 232, second transmission bar; 24, rotating rod; 241, handle; 242, connecting part; 25, control module; 251, first receiving plate; 252, second receiving plate; 26, fixing plate; 261, rotor; 262, support plate; 263, through hole; 264, support bolt. Detailed implementation mode

[0039] The following will further elaborate on this application in conjunction with the attached Figure 1-8 drawings.

[0040] This embodiment discloses an electric isolating switch for mining use. Refer to Figure 1 and Figure 2 , an electric isolating switch for mining use includes a base 1, three contact seats 11 are fixedly connected to the base 1, a moving contact assembly 12 is rotatably connected to the contact seat 11, and three static contacts 13 are fixedly connected to the base 1. People rotate the moving contact assembly 12 to achieve the abutment between the moving contact assembly 12 and the static contact 13. Three arc extinguishing covers 14 are fixedly connected to the base 1, the static contact 13 is located inside the arc extinguishing cover 14, and the rotation path of the moving contact assembly 12 is located inside the arc extinguishing cover 14.

[0041] Refer to Figure 3 , the moving contact assembly 12 includes two swing rods 121 and two extrusion pieces 122, and the gap between the two swing rods 121 is for the static contact 13 to be inserted. The two swing rods 121 are located between the two extrusion pieces 122, and an extrusion groove 123 is formed on the swing rod 121 for the extrusion piece 122 to be inserted. When the extrusion piece 122 is inserted into the extrusion groove 123, the extrusion piece 122 can drive the swing rod 121 to move towards the other swing rod 121. A swing block 124 is fixedly connected between the two swing rods 121, and the swing block 124 is used to prevent the distance between the two swing rods 121 from being too close, resulting in difficulty for the static contact 13 to be inserted between the two swing rods 121.

[0042] Refer to Figure 3 and Figure 4, a pin 125 is provided on the extrusion sheet 122, and the pin 125 passes through two swing rods 121 and two extrusion sheets 122. A plurality of washers 126 are sleeved on the pin 125, and the washers 126 are located on the side of the extrusion sheet 122 away from the swing rod 121. Different numbers of washers 126 are sleeved on the pin 125 to move the extrusion sheet 122 toward the other extrusion sheet 122 and control the distance between the two swing rods 121. Two pressure plates 129 are sleeved on the pin 125, the pressure plates 129 are located between the washers 126 and the extrusion sheet 122, and the two extrusion sheets 122 are located between the two pressure plates 129.

[0043] Refer to Figure 5 , a support seat 127 is integrally formed on the swing block 124, a connecting rod 15 is provided on the base 1, and a support hole 128 for the connecting rod 15 to pass through is provided on the support seat 127. A plurality of washers 151 are sleeved on the outer surface of the connecting rod 15, and two washers 151 are located between two adjacent support seats 127. A support ring 152 is integrally formed on the side surface of the washer 151 facing the adjacent support seat 127, the support ring 152 is sleeved on the connecting rod 15, and the support ring 152 is located between the hole wall of the support hole 128 and the connecting rod 15. The washer 151 and the support ring 152 are made of insulating materials, such as plastics, rubbers or ceramics and other materials.

[0044] Refer to Figure 6 , a plurality of mounting grooves 16 are provided on both opposite sides of the base 1, a mounting plate 2 is provided on the base 1, and mounting holes 21 are provided on the surface of the mounting plate 2. A fastener 211 is provided on the mounting plate 2, and the fastener 211 includes a plurality of fastening bolts. In other embodiments, the fastener 211 can be structures such as screws or blocks. The fastening bolts pass through the mounting holes 21 and are threadedly connected to the mounting grooves 16 to fix the mounting plate 2 on the side surface of the base 1.

[0045] Refer to Figure 5 and Figure 6 , an electric drive source 22 is fixedly connected to the mounting plate 2, two transmission structures 23 are provided on the electric drive source 22, and the transmission structures 23 are arranged on the connecting rod 15. The electric drive source 22 drives the transmission structures 23 to move, so that the transmission structures 23 can make the moving contact assembly 12 contact or separate from the static contact 13.

[0046] Refer to Figure 5 , the electric drive source 22 includes a rotating motor. When the rotating motor is not working, the drive shaft of the rotating motor can rotate. A rotating rod 24 is fixedly connected to the drive shaft of the rotating motor, and the transmission structure 23 is arranged on the rotating rod 24.

[0047] Refer to Figure 5 and Figure 6, one end of the rotating rod 24 away from the rotating motor is the connecting part 242. A handle 241 is provided on the side of the base 1 away from the mounting plate 2. A connecting groove for inserting the connecting part 242 is formed on the handle 241. When the connecting part 242 is inserted into the connecting groove, the handle 241 is fixed to the rotating rod 24. The staff can remove the handle 241 from the connecting part 242 to reduce the occupied space of the disconnecting switch. When the rotating motor is not started, the staff can drive the rotating rod 24 to rotate through the handle 241 to realize the closing or opening of the disconnecting switch.

[0048] Refer to Figure 5 and Figure 6 , the transmission structure 23 includes two first transmission bars 231 and a second transmission bar 232. The two first transmission bars 231 are both fixedly connected to the outer surface of the rotating rod 24. One end of the second transmission bar 232 is rotatably connected between two adjacent first transmission bars 231, and the other end of the second transmission bar 232 is rotatably connected to the connecting rod 15. The second transmission bar 232 is located between two adjacent moving contact assemblies 12, that is, the second transmission bar 232 is located between two adjacent washers 151, and the second transmission bar 232 is located on the side of the washer 151 away from the support ring 152.

[0049] Refer to Figure 5 and Figure 6 , when the rotating rod 24 rotates, the rotating rod 24 drives the first transmission bar 231 to rotate, and the first transmission bar 231 drives the connecting rod 15 to move through the second transmission bar 232, so as to realize the rotation of multiple moving contact assemblies 12.

[0050] Refer to Figure 7 , a control module 25 is provided on the rotating motor.

[0051] Refer to Figure 7 and Figure 8 , the control module 25 is electrically connected to a first receiving board 251 and a second receiving board 252. The control module 25 is used to detect the opening and closing of the disconnecting switch and transmit signals to subsequent devices. A fixing plate 26 is fixedly connected to the side of the rotating motor away from the base 1. The first receiving board 251 and the second receiving board 252 are both fixedly connected to the fixing plate 26. A rotor 261 is rotatably connected to the fixing plate 26, and the rotor 261 is electrically connected to the control module 25. The rotor 261 is fixedly connected to the driving shaft of the rotating motor, and the first receiving board 251 and the second receiving board 252 are both located in the rotation path of the rotor 261.

[0052] Refer to Figure 6 and Figure 8, a support plate 262 is provided on the surface of the rotating motor away from the base 1, and the rotor 261 is located between the rotating motor and the support plate 262. A through hole 263 is formed on the surface of the support plate 262, and a support groove 221 is formed on the surface of the rotating motor away from the base 1. A support bolt 264 is provided on the support plate 262, and the support bolt 264 passes through the through hole 263 and is threadedly connected to the support groove 221, so as to fix the support plate 262 on the rotating motor.

[0053] Referring to Figure 6 , when the moving contact assembly 12 abuts against the static contact 13, the disconnecting switch is closed, and the rotor 261 abuts against the first receiving plate 251; when the moving contact assembly 12 separates from the static contact 13, the disconnecting switch is opened, and the rotor 261 can abut against the second receiving plate 252.

[0054] Referring to Figure 2 and Figure 8 , a protective cover 17 is fixedly connected to the base 1, and both the moving contact assembly 12 and the static contact 13 are arranged inside the protective cover 17. A motor cover 171 is fixedly connected to the base 1, and the rotating motor, the rotor 261, the first receiving plate 251 and the second receiving plate 252 are all located inside the motor cover 171. An epoxy insulating plate 172 is fixedly connected to the surface of the motor cover 171 facing the protective cover 17, and the epoxy insulating plate 172 is used to enhance the insulation performance between the rotating motor and the moving contact assembly 12.

[0055] The implementation principle of an electric disconnecting switch for mine use in an embodiment of the present application is as follows: start the rotating motor, let the rotating motor drive the rotating rod 24 to rotate, and the rotating rod 24 drives the connecting rod 15 to move through the first transmission strip 231 and the second transmission strip 232, so as to realize the closing or opening operation of the disconnecting switch.

[0056] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and the like used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. Words such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationships may also change accordingly.

[0057] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present application shall be included within the protection scope of the present application.

Claims

1. An electric disconnect switch for use in a mine, comprising a base (1), a moving contact assembly (12) being rotatably connected to the base (1), and a stationary contact (13) being provided on the base (1), characterized in that: The base (1) is provided with an electric drive source (22), the electric drive source (22) is rotatably connected to a rotating rod (24), the rotating rod (24) is also provided with a connecting portion (242) for connecting to a manual drive source and driving the rotation, the rotating rod (24) is provided with a transmission structure (23), the transmission structure (23) is connected to the moving contact assembly (12), and when the electric drive source (22) drives the rotating rod (24) to rotate, the transmission structure (23) drives the moving contact assembly (12) to rotate; The electric drive source (22) comprises a rotating motor, a control module (25) for detecting the opening and closing of a switch is provided on the rotating motor, a rotor (261) is rotatably connected to the rotating motor, a first receiving plate (251) and a second receiving plate (252) are provided on the rotating motor, the rotor (261), the first receiving plate (251) and the second receiving plate (252) are all electrically connected to the control module (25), and the first receiving plate (251) and the second receiving plate (252) are both located in the rotation path of the rotor (261); when the isolating switch is closed, the rotor (261) abuts against the first receiving plate (251); when the isolating switch is opened, the rotor (261) abuts against the second receiving plate (252); the control module (25) can transmit an electrical signal to a subsequent device; The surfaces of the base (1) on opposite sides are provided with mounting grooves (16); the base (1) is provided with a mounting plate (2); the mounting plate (2) is provided with a fastener (211); the mounting plate (2) is provided with a mounting hole (21) for the fastener (211) to pass through; the electric drive source (22) is arranged on the mounting plate (2); when the fastener (211) is inserted into the mounting groove (16), the mounting plate (2) is fixed to the base (1); the two mounting grooves (16) are respectively located on different sides of the base (1) along the length direction of the rotating rod (24); the connecting portion (242) is arranged at both ends of the rotating rod (24); so that the mounting plate can be installed on any side of the base.

2. The electric isolating switch for mine according to claim 1, characterized in that: A support plate (262) is provided on the rotating motor, and the support plate (262) is located on a side of the rotor (261) away from the rotating motor.

3. The electric isolating switch for mine according to claim 1, characterized in that: The transmission structure (23) comprises a first transmission bar (231) and a second transmission bar (232); the first transmission bar (231) is fixedly connected to the rotating rod (24); the second transmission bar (232) is rotationally connected to the first transmission bar (231); and the second transmission bar (232) is rotationally connected to the moving contact assembly (12).

4. The electric isolating switch for mine according to claim 1, characterized in that: The connecting portion (242) is provided with a handle (241), and the handle (241) is used to manually rotate the rotating rod (24).

5. The electric isolating switch for mine according to claim 1, characterized in that: A plurality of the moving contact assemblies (12) are provided, a connecting rod (15) is provided on the base (1), the connecting rod (15) connects the plurality of moving contact assemblies (12), the connecting rod (15) is provided with a plurality of insulating washers (151), and the washers (151) are located between two adjacent moving contact assemblies (12).

6. The electric isolating switch for mine according to claim 5, characterized in that: A support ring (152) is integrally formed on the washer (151), a support seat (127) is provided on the moving contact assembly (12), the support seat (127) is sleeved on the connecting rod (15), and the support ring (152) is located between the support seat (127) and the connecting rod (15).

7. The electric isolating switch for mine according to claim 1, characterized in that: The moving contact assembly (12) comprises two swing rods (121) and two extrusion sheets (122); the two swing rods (121) are located between the two extrusion sheets (122); a pin (125) is provided on the extrusion sheet (122); the pin (125) passes through the two swing rods (121) and the two extrusion sheets (122); and the extrusion sheet (122) drives the swing rod (121) to move in the direction of the other swing rod (121).

8. The electric isolating switch for mine according to claim 7, characterized in that: A plurality of gaskets (126) are provided on the pin (125), and the gaskets (126) are located in a direction where the extrusion sheet (122) is away from another extrusion sheet (122).

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