Mining isolating switch

Abstract

The utility model relates to the technical field of disconnecting switches, and discloses a mining disconnecting switch which comprises a base, a plurality of moving contact assemblies are rotationally connected to the base, a static contact is arranged on the base, each moving contact assembly comprises two switch blades, a plug pin is arranged on each switch blade, a plurality of gaskets are arranged on each plug pin in a sleeving mode, and each switch blade is located between the corresponding gaskets. According to the invention, the plurality of gaskets are arranged on the plug pin in a sleeving manner, and the gaskets are located on the sides, far away from the adjacent switch blades, of the switch blades, so that the switch blades are extruded by the gaskets of different numbers, and a static contact is inserted into the distance between the two switch blades. Compared with the prior art that the two nuts and the elastic sheet are located on the same side of the brake blade and the gaskets are located on the two sides of the brake blade, the distance of the moving contact assembly in the length direction of the plug pin is small, the space occupied by the moving contact assembly is small, the requirement for small space of the mining disconnecting switch is met, and the applicability of the disconnecting switch is improved.

Description

Technical Field

[0001] This application relates to the technical field of disconnect switches, and in particular, to a mine-use disconnect switch. Background Art

[0002] A disconnect switch is a switching device mainly used for "isolating power supplies, performing switching operations, and connecting and disconnecting small-current circuits" without arc-extinguishing function. Part of the disconnect switches are applied on the ground, and the other part is applied in underground mines. Compared with the disconnect switches on the ground, the mine-use disconnect switches have the characteristics of high isolation and smaller occupied space, and the mine-use disconnect switches can be applied to structures such as feed switches.

[0003] In the related art, the disconnect switch includes a base, on which a plurality of moving contact assemblies are rotatably connected. A plurality of static contacts are provided on the base. The moving contact assembly includes two blade switches. Bolts are provided on the blade switches. The bolts pass through the two blade switches. Two nuts are threadedly connected to the bolts. A spring washer is sleeved on the bolts, and the spring washer is located between the two nuts.

[0004] Since the washer is located between the two nuts, the bolt needs to be relatively long so that after passing through the two blade switches, two nuts and a spring washer can be sleeved on the bolt, making the width of the moving contact assembly in the length direction of the bolt relatively large, and the moving contact assembly occupies a large space. In addition, a sufficient electrical distance needs to be maintained between multiple moving contact assemblies to ensure safety. Therefore, the overall occupied space of the disconnect switch is large, and it is difficult for the disconnect switch to be used normally in some small places. Utility Model Content

[0005] In order to improve the problem that the moving contact assembly occupies a large space, this application provides a mine-use disconnect switch.

[0006] A mine-use disconnect switch provided by this application adopts the following technical solutions:

[0007] A mine-use disconnect switch includes a base, on which a plurality of moving contact assemblies are rotatably connected. Static contacts are provided on the base. The moving contact assembly includes two blade switches. Pins are provided on the blade switches. A plurality of washers are sleeved on the pins. The blade switches are located between the plurality of washers, and the washers are located on the side of the blade switches away from the adjacent blade switches.

[0008] By adopting the above technical solution, a plurality of gaskets are sleeved on the latch pin, and the gaskets are located on the side of the blade away from the adjacent blade. Different numbers of gaskets are used to squeeze the blade, so that the distance between the two blades allows the static contact to be inserted. Compared with the prior art where both the two nuts and the elastic pieces are located on the same side of the blade, and the gaskets are located on both sides of the blade, the distance of the moving contact assembly along the length direction of the latch pin is smaller, the space occupied by the moving contact assembly is smaller, and the space occupied by the overall disconnecting switch is smaller, so as to meet the requirement of small space for the mine disconnecting switch and increase the applicability of the disconnecting switch.

[0009] Optionally, an extrusion piece is provided on the blade, the extrusion piece is located between the gasket and the blade, and an extrusion groove for inserting the extrusion piece is formed on the blade.

[0010] By adopting the above technical solution, with the extrusion piece located between the gasket and the blade, the extrusion piece is inserted into the extrusion groove, so that the extrusion piece can stably move the blade towards the direction of the adjacent other blade, facilitating a smaller distance between the adjacent two blades and enabling the static contact to smoothly abut against the two blades; with the extrusion piece located between the gasket and the blade, the gasket drives the blade through the extrusion piece, the extrusion piece is inserted into the extrusion groove, so that the extrusion piece can stably drive the blade towards the direction of the other blade, and the distance between the two blades can be limited by the extrusion piece.

[0011] Optionally, a snap ring is provided on the latch pin, and the snap ring is used to fix the latch pin.

[0012] By adopting the above technical solution, with the snap ring provided on the latch pin, the snap ring limits the latch pin to prevent the latch pin from detaching from the blade, so that the latch pin can be more stably located on the blade.

[0013] Optionally, a driving source is provided on the base, a rotating rod is rotatably connected to the base, the driving source drives the rotating rod to rotate, and a transmission structure is provided on the rotating rod, and the transmission structure is used to drive the moving contact assembly to rotate.

[0014] By adopting the above technical solution, the driving source rotates the rotating rod, and the rotating rod drives the moving contact assembly to rotate through the transmission structure, realizing the abutment or separation of the moving contact assembly and the static contact, and enabling the disconnecting switch to perform opening or closing; since the transmission structure is provided on the moving contact assembly, compared with directly driving the moving contact assembly to rotate, the power arm on the moving contact assembly in this solution increases. According to the lever principle, the driving source can drive the moving contact assembly to rotate more labor - savingly. Under the same acting force, the driving source can drive the disconnecting switch to perform opening and closing operations faster through the transmission structure.

[0015] Optionally, a connecting rod is provided on the transmission structure, and a mounting seat is provided on the brake blade, and the mounting seat is sleeved on the connecting rod.

[0016] By adopting the above technical solution, since the mounting seat is provided on the brake blade and the mounting seat is sleeved on the connecting rod, the connection between the brake blade and the connecting rod is made more stable, reducing the possibility of separation between the brake blade and the connecting rod, enabling the connecting rod to stably drive the brake blade to rotate.

[0017] Optionally, a plurality of insulating washers are sleeved on the connecting rod, and the washers are located between two adjacent moving contact components.

[0018] By adopting the above technical solution, since the washers are located between two adjacent moving contact components and the washers are insulating, the washers can increase the creepage distance on the connecting rod, making the two adjacent moving contact components more stable, increasing the electrical distance between the two adjacent moving contact components, and making the disconnecting switch safer.

[0019] Optionally, an installation ring is integrally formed on the washer, and the installation ring is located between the mounting seat and the connecting rod.

[0020] By adopting the above technical solution, since the installation ring is located between the mounting seat and the connecting rod, the inner diameter of the mounting seat and the outer diameter of the connecting rod do not need to be particularly precise. Coupled with the fact that the installation ring is integrally formed on the washer and the washer is usually made of an insulating material such as plastic, the manufacturing precise dimensions of the installation ring are simpler, so that the mounting seat can be sleeved in the installation ring and the installation ring can be sleeved on the connecting rod, reducing the processing difficulty of the mounting seat.

[0021] Optionally, the transmission structure includes a first transmission bar and a second transmission bar. The first transmission bar is arranged on the rotating rod, the second transmission bar is rotatably connected to the first transmission bar, and the second transmission bar is arranged on the connecting rod.

[0022] By adopting the above technical solution, since the first transmission bar is rotatably connected to the rotating rod and the second transmission bar is rotatably connected to the first transmission bar, when the rotating rod rotates, the rotating rod can drive the first transmission bar and the second transmission bar to rotate. Coupled with the fact that the second transmission bar is arranged on the connecting rod, the second transmission bar drives the connecting rod to rotate, and the moving contact component is arranged on the connecting rod, realizing that the rotating rod drives the moving contact component to rotate; compared with directly driving the moving contact component to rotate, the driving of the second transmission bar on the connecting rod and the mounting seat increases the power arm of the moving contact component. According to the lever principle, the second transmission bar can rotate the moving contact component more labor-savingly. Under the same acting force, the moving contact component can perform the opening and closing operations more quickly.

[0023] Optionally, the second transmission bar is located between two adjacent washers.

[0024] By adopting the above technical solution, with the second transmission bar located between two adjacent washers, the two washers can increase the creepage distance of electricity in the second transmission bar and reduce the possibility of electricity extending along the second transmission bar.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. By sleeving a plurality of gaskets on the plug pin, and the gaskets are located on the side of the blade away from the adjacent blade, the gaskets can extrude the blade, so that the distance between the two blades can be reduced. Compared with the two nuts and the elastic pieces in the background art, which are both located on the same side of the blade, and the gaskets are located on both sides of the blade, the distance of the moving contact assembly along the length direction of the plug pin is smaller, the space occupied by the moving contact assembly is smaller, and the space occupied by the overall disconnecting switch is smaller, so as to meet the requirement of small space for the mine disconnecting switch and increase the applicability of the disconnecting switch.

[0027] 2. By having the washer located between two adjacent moving contact assemblies and the washer being insulating, the washer can increase the creepage distance on the connecting rod, making the two adjacent moving contact assemblies more stable, increasing the electrical distance between the two adjacent moving contact assemblies, and making the disconnecting switch safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0029] Figure 2 is a schematic structural diagram highlighting the moving contact assembly in an embodiment of the present application;

[0030] Figure 3 is an exploded schematic diagram highlighting the plug pin in an embodiment of the present application;

[0031] Figure 4 is a schematic structural diagram highlighting the transmission structure in an embodiment of the present application;

[0032] Figure 5 is an exploded schematic diagram highlighting the washer in an embodiment of the present application.

[0033] Reference numerals: 1, base; 11, mounting seat; 12, moving contact assembly; 121, blade; 122, extrusion piece; 123, extrusion groove; 124, pressing plate; 13, static contact; 131, arc extinguishing cover; 14, plug pin; 141, gasket; 142, snap ring; 143, card slot; 2, drive source; 21, rotating rod; 22, protective cover; 221, motor cover; 23, transmission structure; 231, first transmission bar; 232, second transmission bar; 24, connecting rod; 25, washer; 251, mounting ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following further describes this application in detail with reference to the accompanying drawings. Figures 1-5

[0035] This embodiment discloses a mine disconnect switch. Referring to Figure 1 and Figure 2 , a mine disconnect switch includes a base 1, on which a plurality of mounting seats 11 are fixedly connected, and a moving contact assembly 12 is rotatably connected to the mounting seats 11. A plurality of static contacts 13 are fixedly connected to the base 1, and the moving contact assembly 12 can abut against or separate from the static contacts 13 to achieve closing or opening of the disconnect switch.

[0036] Referring to Figure 2 , a plurality of arc extinguishing covers 131 are fixedly connected to the base 1, the static contacts 13 are located inside the arc extinguishing covers 131, and the moving contact assembly 12 can rotate inside the arc extinguishing covers 131.

[0037] Referring to Figure 2 and Figure 3 , the moving contact assembly 12 includes two blade contacts 121 and two pressing pieces 122. A static contact 13 can be inserted between two adjacent blade contacts 121. The pressing pieces 122 are located on the side of the blade contact 121 away from the other adjacent blade contact 121, and both blade contacts 121 are located between the two pressing pieces 122. Pressing grooves 123 are formed on the surfaces of the blade contacts 121 facing the adjacent pressing pieces 122, and the pressing pieces 122 can be inserted into the pressing grooves 123 to limit the blade contacts 121 by the pressing pieces 122.

[0038] Referring to Figure 3 , a pin 14 is provided on the blade contact 121. The pin 14 is a round pin, and the pin 14 sequentially passes through the pressing pieces 122, the two blade contacts 121, and the pressing pieces 122. A plurality of washers 141 and snap rings 142 are sleeved on the pin 14, and the washers 141 are located in the direction away from the other pressing piece 122 of the pressing piece 122. When different numbers of washers 141 are sleeved, the washers 141 can move the pressing piece 122 in the direction of the other pressing piece 122, so that the pressing piece 122 can stably limit the blade contact 121. A clamping groove 143 is formed on the outer surface of the pin 14 for the snap ring 142 to be inserted. When the snap ring 142 is inserted into the clamping groove 143, the pin 14 is fixed to the blade contact 121 and the pressing piece 122.

[0039] Referring to Figure 3 , a pressing plate 124 is provided on the surface of the pressing piece 122 away from the other pressing piece 122. The pressing plate 124 is sleeved on the pin 14, and the pressing plate 124 is located between the pressing piece 122 and the washer 141 to increase the contact area of the washer 141 with the pressing piece 122.

[0040] Referring to​Figure 2 , a driving source 2 is provided on the base 1. The driving source 2 includes a handle and a motor. A rotating rod 21 is rotatably connected to the base 1. The handle is sleeved on the rotating rod 21, and at this time, the handle is fixedly connected to the rotating rod 21; the motor is fixedly connected to the base 1, and the driving shaft of the motor is fixedly connected to the rotating rod 21. When the motor is not started, the driving shaft of the motor can rotate along with the rotating rod 21. Either the handle or the motor can drive the rotating rod 21 to rotate.

[0041] Refer to Figure 1 and Figure 2 , a protective cover 22 is fixedly connected to the base 1, and a plurality of moving contact assemblies 12 and static contacts 13 are both located inside the protective cover 22. A motor cover 221 is fixedly connected to the base 1, and the motor is located inside the motor cover 221.

[0042] Refer to Figure 4 , a plurality of transmission structures 23 are provided on the rotating rod 21, and the transmission structures 23 are arranged on the moving contact assemblies 12. The transmission structure 23 includes two first transmission bars 231 and a second transmission bar 232, and both of the two first transmission bars 231 are fixedly connected to the rotating rod 21.

[0043] Refer to Figure 4 and Figure 5 , 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 fixedly connected with a connecting rod 24.

[0044] Refer to Figure 5 , when the handle is rotated or the motor is started, the rotating rod 21 rotates, the rotating rod 21 drives the first transmission bar 231 to move, and the first transmission bar 231 drives the connecting rod 24 to move through the second transmission bar 232.

[0045] Refer to Figure 3 and Figure 5 , a plurality of mounting seats 11 are sleeved on the connecting rod 24. The mounting seats 11 are located between two adjacent blade switches 121, and the mounting seats 11 are for the insertion pins 14 to pass through. A plurality of washers 25 are sleeved on the connecting rod 24. The washers 25 are made of insulating materials such as plastics. An installation ring 251 is integrally formed on the surface of the washer 25. The installation ring 251 is sleeved on the connecting rod 24, and the installation ring 251 is located between the connecting rod 24 and the mounting seat 11. The second transmission bar 232 is located between two adjacent washers 25, and the installation ring 251 is located on the side of the washer 25 away from the second transmission bar 232.

[0046] The implementation principle of a mine isolation switch in an embodiment of the present application is as follows: When the handle is rotated or the motor is started, the rotating rod 21 rotates. The rotating rod 21 drives the connecting rod 24 to move through the first transmission bar 231 and the second transmission bar 232, so that the connecting rod 24 can drive the mounting base 11 to move, realizing the contact or separation of the moving contact assembly 12 and the static contact 13.

[0047] Unless otherwise defined, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those with ordinary skills in the field to which this application belongs. The terms "first", "second", "third" and similar words 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 "an" 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. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0048] The above are only the preferred embodiments of this application and are not used to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of this application shall be included within the protection scope of this application.

Claims

1. A mine disconnect switch, comprising a base (1), on which a plurality of moving contact assemblies (12) are rotatably connected, a static contact (13) is provided on the base (1), and the moving contact assembly (12) includes two blade contacts (121), characterized in that: A pin (14) is provided on the blade (121). A plurality of washers (141) are sleeved on the pin (14). The blade (121) is located between the plurality of washers (141). The washer (141) is located on the side of the blade (121) away from the adjacent blade (121).

2. The disconnector for mine use according to claim 1, characterized in that: An extrusion piece (122) is provided on the blade (121). The extrusion piece (122) is located between the washer (141) and the blade (121). An extrusion groove (123) for inserting the extrusion piece (122) is formed on the blade (121).

3. The disconnector for mine use according to claim 1, characterized in that: A snap ring (142) is provided on the pin (14). The snap ring (142) is used to fix the pin (14).

4. A mine disconnect switch according to claim 1, characterized in that: A driving source (2) is provided on the base (1). A rotating rod (21) is rotatably connected to the base (1). The driving source (2) drives the rotating rod (21) to rotate. A transmission structure (23) is provided on the rotating rod (21). The transmission structure (23) is used to drive the moving contact assembly (12) to rotate.

5. The disconnector for mine use according to claim 4, wherein: A connecting rod (24) is provided on the transmission structure (23). A mounting seat (11) is provided on the blade (121). The mounting seat (11) is sleeved on the connecting rod (24).

6. The mine disconnect switch according to claim 5, characterized in that: A plurality of insulating washers (25) are sleeved on the connecting rod (24). The washers (25) are located between two adjacent moving contact assemblies (12).

7. The disconnector for mine use according to claim 6, characterized in that: An installation ring (251) is integrally formed on the washer (25). The installation ring (251) is located between the mounting seat (11) and the connecting rod (24).

8. The mine disconnector according to claim 6, wherein: The transmission structure (23) includes a first transmission bar (231) and a second transmission bar (232). The first transmission bar (231) is arranged on the rotating rod (21). The second transmission bar (232) is rotatably connected to the first transmission bar (231). The second transmission bar (232) is arranged on the connecting rod (24).

9. The disconnector for mine use according to claim 8, wherein: The second transmission bar (232) is located between two adjacent washers (25).

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