CN112177445A

CN112177445A - Electrical switch cabinet

Info

Publication number: CN112177445A
Application number: CN202011039881.XA
Authority: CN
Inventors: 冯沛兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-01-05

Abstract

The invention provides an electrical switch cabinet, which comprises a cabinet body, a first rotating shaft, a cabinet door, a second rotating shaft, a nut column, a piston, a first spiral spring, a push rod and a spring lock, wherein one side of an opening of the cabinet body is provided with a convex edge, a first inner cavity and a second inner cavity are arranged in the convex edge, the spring lock is arranged in the side wall of the first inner cavity, the spring lock comprises an inner lock cylinder, one end of a second rotating shaft is fixedly connected with the inner lock cylinder, the other end of the second rotating shaft is in threaded connection with a nut column, a piston is connected with the inner wall of a first inner cavity in a sliding and sealing mode, the first inner cavity is communicated with a second inner cavity through a first through hole, the piston, the first inner cavity and a push rod form a first sealing cavity, lubricating grease is filled in the first sealing cavity, one end of a first spiral spring is fixedly connected with the side wall of the first inner cavity, one end of the push rod is connected with the inner wall of the first through hole in a sliding and sealing mode, and a clamping groove is formed in one end. The invention can limit the position of the cabinet door, and is convenient for technicians to open the cabinet door.

Description

Electrical switch cabinet

Technical Field

The invention relates to the technical field of switch cabinets, in particular to an electrical switch cabinet.

Background

The switch cabinet is an electrical device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch is arranged according to the requirement. The electrical switch cabinet mainly functions to open, close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system, and the internal components of the electrical switch cabinet mainly comprise a circuit breaker, an isolating switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like.

Due to maintenance and cleaning requirements, the doors of electrical switchgear cabinets need to be opened and closed. However, the cabinet body and the door body of the conventional electric switch cabinet are generally connected through hinges, when internal elements of the electric switch cabinet are cleaned or maintained, the cabinet door can rotate automatically or even be closed, the cleaning and maintenance progress is influenced, and the structure of the electric switch cabinet is to be improved.

Disclosure of Invention

Based on this, in order to solve the problem that the door of the prior electric switch cabinet can automatically rotate or even close when being cleaned or maintained, and the cleaning and maintenance progress is influenced, the invention provides an electric switch cabinet, and the specific technical scheme is as follows:

an electrical switch cabinet comprises a cabinet body, a first rotating shaft and a cabinet door, wherein one side of an opening of the cabinet body is provided with a convex edge protruding inwards, the convex edge is provided with a slot, the cabinet door is rotationally connected with the slot through the first rotating shaft, and the electrical switch cabinet is characterized by further comprising a second rotating shaft, a nut column, a piston, a first spiral spring, a push rod and a marble lock, a first inner cavity and a second inner cavity are arranged in the convex edge, the marble lock is installed in a side wall of the first inner cavity far away from the cabinet door, the marble lock comprises an inner lock cylinder, one end of the second rotating shaft is fixedly connected with the inner lock cylinder, one end of the second rotating shaft is rotationally connected with a side wall of the first inner cavity far away from the cabinet door, the other end of the second rotating shaft extends into the first inner cavity and is in threaded connection with the nut column, the piston with the nut post is kept away from the one end fixed connection of second pivot, the piston with the inner wall sliding seal of first inner chamber connects, first inner chamber with the second inner chamber is through first through-hole intercommunication, the piston first inner chamber, form a first sealed cavity between the push rod, it has lubricating grease to fill in the first sealed cavity, first coil spring's one end with first inner chamber is kept away from the lateral wall fixed connection of second inner chamber, first coil spring's the other end with the one end fixed connection of push rod, the one end of push rod with the inner wall sliding seal of first through-hole connects, the one end of first pivot stretch into in the second inner chamber and be equipped with the other end assorted draw-in groove of push rod.

Optionally, the electrical switch cabinet further comprises a memory spring, a spine portion and an elastic film, a second through hole is further arranged in the protruding edge, one end of the second through hole is communicated with the groove, the other end of the second through hole is communicated with the side wall of the first through hole, the edge of the periphery of the elastic film is connected with the side wall of the other end of the second through hole in a sealing mode, one end of the memory spring is far away from the second through hole and is fixedly connected with the side wall of the first through hole, the other end of the memory spring is fixedly connected with one end of the spine portion, and the other end of the spine portion is opposite to the elastic film.

Optionally, the cylinder lock further includes an outer lock cylinder, a second spiral spring, an outer cylinder and an inner cylinder, wherein the outer lock cylinder is provided with at least one outer cylinder hole, the inner lock cylinder is provided with an inner cylinder hole matched with the outer cylinder hole, the inner lock cylinder is sleeved in the outer lock cylinder, the second spiral spring and the outer cylinder are installed in the outer cylinder hole, one end of the second spiral spring is in contact with the outer cylinder hole, the side wall of the inner lock cylinder is far away from the outer cylinder hole, the other end of the second spiral spring is in contact with one end of the outer cylinder, and the inner cylinder is installed in the inner cylinder hole.

Optionally, the electrical switch cabinet further comprises a key matched with the pin tumbler lock.

Optionally, the nut column is a press-riveting nut column.

Optionally, the clamping groove is in a regular hexagon shape.

Optionally, a rubber handle is arranged on the cabinet door.

Optionally, the outer lock cylinder and the inner lock cylinder are both made of aluminum alloy materials.

Optionally, the bottom of the cabinet body is provided with rubber supporting feet.

One end of the second rotating shaft is rotatably connected with the side wall, far away from the cabinet door, of the first inner cavity through the inner lock cylinder, the other end of the second rotating shaft is in threaded connection with the nut column, and one end of the nut column is fixedly connected with the piston, so that the second rotating shaft can be driven to rotate by rotating the inner lock cylinder of the spring lock, and the piston is driven to move back and forth along the side wall of the first inner cavity. And first coil spring set up the lateral wall in first inner chamber with between the one end of push rod, the one end of push rod and the inner wall sliding seal of first through-hole are connected, the one end of first pivot be equipped with the other end assorted draw-in groove of push rod, it has lubricating grease to fill in the first sealed cavity, through the lateral wall round trip movement of drive piston along first inner chamber, can make the push rod slide from top to bottom along the inner wall of first through-hole, and then make the other end card of push rod go into in the draw-in groove or follow break away from in the draw-in groove to prescribe a limit to the position of first pivot and cabinet door, make things convenient for the technical staff to open the cabinet door, clean and maintain the electrical component in the electrical switchgear.

Drawings

The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

Fig. 1 is a schematic diagram of an overall structure of an electrical switchgear according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic view of an overall structure of a pin tumbler lock of an electrical switch cabinet according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the structural relationship between the memory spring, the spike, the elastic membrane and the protruding edge of the electrical switch cabinet according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the structural relationship among the third inner cavity, the rubber block, the third coil spring, the top bar and the raised edge of the electrical switch cabinet according to an embodiment of the present invention;

fig. 6 is a schematic structural relationship diagram of a first limiting block, a second limiting block, a first round bar, a second round bar and a third inner cavity of an electrical switch cabinet according to an embodiment of the present invention.

Description of reference numerals:

1. a cabinet body; 2. a first rotating shaft; 3. a cabinet door; 4. a second rotating shaft; 5. a nut post; 6. a piston; 7. a first coil spring; 8. a push rod; 9. a raised edge; 10. grooving; 11. a first lumen; 12. a second lumen; 13. a first through hole; 14. an inner lock cylinder; 15. an outer lock cylinder; 16. a second coil spring; 17. an outer pin; 18. an inner marble; 19. an outer bullet hole; 20. an inner bullet hole; 21. a memory spring; 22. a spike portion; 23. an elastic film; 24. a second through hole; 25. a first round bar; 26. a top rod; 27. a third coil spring; 28. a rubber block; 29. a third lumen; 30. a groove; 31. a first stopper; 32. a second round bar; 33. and a second limiting block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

The first embodiment is as follows:

as shown in fig. 1 and fig. 2, an electrical switch cabinet includes a cabinet body 1, a first rotating shaft 2 and a cabinet door 3, wherein a protruding edge 9 protruding inward is disposed on one side of an opening of the cabinet body 1, the protruding edge 9 is provided with a slot 10, the cabinet door 3 is rotatably connected to the slot 10 through the first rotating shaft 2, the electrical switch cabinet further includes a second rotating shaft 4, a nut column 5, a piston 6, a first spiral spring 7, a push rod 8 and a pin tumbler lock, a first inner cavity 11 and a second inner cavity 12 are disposed in the protruding edge 9, the pin tumbler lock is mounted in a side wall of the first inner cavity 11 away from the cabinet door 3, the pin tumbler lock includes an inner lock cylinder 14, one end of the second rotating shaft 4 is fixedly connected to the inner lock cylinder 14, and one end of the second rotating shaft 4 is rotatably connected to a side wall of the first inner cavity 11 away from the cabinet door 3 through the inner lock cylinder 14, the other end of the second rotating shaft 4 extends into the first inner cavity 11 and is in threaded connection with the nut post 5, the piston 6 is far away from the nut post 5, one end of the second rotating shaft 4 is fixedly connected, the piston 6 is in sliding sealing connection with the inner wall of the first inner cavity 11, the first inner cavity 11 is communicated with the second inner cavity 12 through a first through hole 13, a first sealing cavity is formed between the piston 6 and the first inner cavity 11 and the push rod 8, lubricating grease is filled in the first sealing cavity, one end of the first spiral spring 7 is fixedly connected with the side wall of the second inner cavity 12 far away from the first inner cavity 11, the other end of the first spiral spring 7 is fixedly connected with one end of the push rod 8, one end of the push rod 8 is in sliding sealing connection with the inner wall of the first through hole 13, one end of the first rotating shaft 2 extends into the second inner cavity 12 and is provided with a clamping groove matched with the other end of the push rod 8 (not shown in the figure). By filling the first sealing chamber with grease, it can be ensured that the piston 6 slides smoothly along the side wall of the first inner cavity 11 and the push rod 8 along the inner wall of the first through hole 13.

One end of the second rotating shaft 4 is rotatably connected with the side wall of the first inner cavity 11 far away from the cabinet door 3 through the inner lock cylinder 14, the other end of the second rotating shaft 4 is in threaded connection with the nut column 5, and one end of the nut column 5 is fixedly connected with the piston 6, so that the second rotating shaft 4 can be driven to rotate by rotating the inner lock cylinder 14 of the spring lock, and the piston 6 is driven to move back and forth along the side wall of the first inner cavity 11. And first coil spring 7 set up the lateral wall at first inner chamber 11 with between the one end of push rod 8, the one end of push rod 8 and the inner wall sliding seal of first through-hole 13 are connected, the one end of first pivot 2 be equipped with the other end assorted draw-in groove of push rod 8, it has lubricating grease to fill in the first sealed cavity, through drive piston 6 along the lateral wall round trip movement of first inner chamber 11, can make push rod 8 slide from top to bottom along the inner wall of first through-hole 13, and then make push rod 8's other end card go into among the draw-in groove or follow break away from in the draw-in groove to prescribe a limit to the position of first pivot 2 and cabinet door 3, make things convenient for the technical staff to open cabinet door 3, clean and maintain the electric elements in the electric switch cabinet.

When the other end of the push rod 8 is clamped into the clamping groove, the first spiral spring 7 is in a stretching state, and the elastic force of the first spiral spring can enable the push rod 8 to keep a trend of moving towards the first inner cavity 11. When the second rotating shaft 4 is rotated and the nut stud 5 and the piston 6 are driven to move in a direction away from the first spiral spring 7, the push rod 8 moves towards the first inner cavity 11 under the elastic force of the first spiral spring 7, and the other end of the push rod 8 is separated from the clamping groove. At this moment, open cabinet door 3 to certain angle to rotate first rotation once more, the drive nut post 5 and piston 6 toward being close to first coil spring 7 direction removes, through lubricating grease drive push rod 8 in the first sealed cavity removes toward second inner chamber 12 direction, and then makes push rod 8's the other end card go into in the draw-in groove, can prescribe a limit to the position of cabinet door 3, make things convenient for the technical staff to clean or operation such as maintenance change the inside electrical component of electrical switchgear.

When the other end of the push rod 8 is clamped into the clamping groove or separated from the clamping groove, the first spiral spring 7 is in a stretching state all the time. When the nut column 5 and the piston 6 are driven to move in the direction away from the first spiral spring 7 by rotating the first rotating shaft 2, the push rod 8 always keeps a trend of moving towards the first inner cavity 11 under the elastic force action of the first spiral spring 7, so that the push rod 8 can be smoothly separated from the clamping groove to open the cabinet door 3.

As shown in fig. 3, the pin tumbler lock further includes an outer lock cylinder 15, a second spiral spring 16, an outer pin 17 and an inner pin 18, wherein at least one outer pin hole 19 is formed in the outer lock cylinder 15, an inner pin hole 20 matched with the outer pin hole 19 is formed in the inner lock cylinder 14, the inner lock cylinder 14 is sleeved in the outer lock cylinder 15, the second spiral spring 16 and the outer pin 17 are installed in the outer pin hole 19, one end of the second spiral spring 16 is in contact with a side wall of the outer pin hole 19 far from the inner lock cylinder 14, the other end of the second spiral spring 16 is in contact with one end of the outer pin 17, and the inner pin 18 is installed in the inner pin hole 20. The electrical switch cabinet also comprises a key matched with the pin tumbler lock.

Utilize key and pellet shot from a slingshot tool to lock, can close cabinet door 3, prevent that non-technical personnel from opening electrical switchgear at will, improve electrical switchgear's security performance. The spring lock is arranged on the side wall of the first cavity far away from the cabinet door 3, the structure is ingenious and simple, and the angle position of the cabinet door 3 can be well locked.

The specific sizes of the inner lock cylinder 14, the outer lock cylinder 15, the second spiral spring 16, the outer pin 17, the inner pin 18 and the key are conventional technical means in the field, and can be set by those skilled in the art as required, so that detailed description is omitted here.

In this embodiment, the nut post 5 is a press-riveting nut post 5, and the clamping groove is cross-shaped. Therefore, the nut column 5 and the piston 6 are driven to move towards the direction close to the first spiral spring 7 by rotating the second rotating shaft 4, and then the other end of the push rod 8 is driven to be inserted into the clamping groove, so that the cabinet door 3 can be limited to three angles of 0 degree, 90 degrees and 180 degrees.

In this embodiment, a rubber handle is disposed on the cabinet door 3 to facilitate the opening and closing of the cabinet door 3 by a technician.

In this embodiment, the marble lockset is made of an aluminum alloy material so as to reduce the weight of the whole electrical switch cabinet and facilitate the movement and the transportation of the electrical switch cabinet by technicians.

In this embodiment, the bottom fixed mounting of the cabinet body 1 has rubber supporting legs to prevent the electrical switch cabinet slides, reduces the vibrations that the electrical switch cabinet received.

In one embodiment, the push rod 8 is a fusible alloy, the melting temperature of the fusible alloy is between 65 degrees and 120 degrees, and when an electrical circuit fault occurs inside the electrical switch cabinet to cause a fire or the heat inside the electrical switch cabinet is poorly dissipated to cause the temperature inside the cabinet body 1 to be too high, and the temperature of the cabinet body 1 is higher than the melting temperature of the fusible alloy, the fusible alloy is heated and melted. At this moment, the fusible alloy no longer restricts the position of first pivot 2 and cabinet door 3, and the technical staff can very conveniently open cabinet door 3 as required and carry out ventilation cooling to the electrical switchgear, perhaps close cabinet door 3 to reach the mesh that utilizes cabinet door 3 isolated electrical switchgear inside air and make the inside flame of the cabinet body 1 extinguish.

Example two:

As shown in fig. 4, the electrical switch cabinet further includes a memory spring 21, a spike portion 22 and an elastic film 23, a second through hole 24 is further disposed in the protruding edge 9, one end of the second through hole 24 is communicated with the slot 10, the other end of the second through hole 24 is communicated with the side wall of the first through hole 13, the peripheral edge of the elastic film 23 is hermetically connected with the side wall of the other end of the second through hole 24, one end of the memory spring 21 is fixedly connected with the side wall of the second through hole 24 far away from the first through hole 13, the other end of the memory spring 21 is fixedly connected with one end of the spike portion 22, and the other end of the spike portion 22 faces the elastic film 23. Specifically, the spike portion 22 may puncture the elastic membrane 23, and the memory spring 21 is made of a CuZnAl memory alloy wire and has a two-way memory effect, and the expansion and contraction temperature thereof is 65 to 95 ℃. That is, when the memory spring 21 is heated and the temperature is higher than the stretching temperature, the length thereof is increased, and the sharp portion 22 is pushed to approach the elastic film 23 and pierce the elastic film 23. At this time, the lubricating grease in the first sealing chamber flows into the slot 10 from the broken elastic membrane 23 through the first through hole 13 and the second through hole 24, and the push rod 8 is separated from the slot under the elastic force of the first spiral spring 7. Through setting up memory spring 21, spine portion 22 and elastic film 23, when electrical switchgear high temperature or conflagration breaing out, need not to rotate interior lock core 14 and second pivot 4 through the key, can be in order to open electrical switchgear cabinet door 3 and dispel the heat or close the electrical switchgear cabinet door 3 that has opened to reach and utilize the isolated electrical switchgear inside air of cabinet door 3 and make the mesh that the inside flame of the cabinet body 1 goes out. In addition, when the electrical switch cabinet is used for a long time and the spring lock is corroded and rusted, and the electrical switch cabinet cannot be opened through a key, the part, opposite to the groove 10, of the protruding edge 9 of the electrical switch cabinet can be heated, so that the memory spring 21 is heated to extend, the spine portion 22 is driven to pierce the elastic film 23, the push rod 8 is further separated from the clamping groove, and the closed electrical switch cabinet is opened.

In this embodiment, the slot has a regular hexagon shape. In this way, by rotating the second rotating shaft 4, the nut column 5 and the piston 6 are driven to move toward the first coil spring 7, and then the other end of the push rod 8 is driven to be inserted into the slot, so that the cabinet door 3 can be limited to three angles of 0 degree, 60 degrees, 120 degrees and 180 degrees.

In this embodiment, the push rod 8 is a fusible alloy, the melting temperature of the fusible alloy is 95 to 120 degrees, when an electric circuit fault occurs inside the electrical switch cabinet and a fire hazard occurs or the heat dissipation inside the electrical switch cabinet is poor, so that the temperature inside the cabinet body 1 is too high, and the temperature of the cabinet body 1 is higher than the melting temperature of the push rod 8, the push rod 8 is heated and melted. At this moment, the push rod 8 no longer limits the position of first pivot 2 and cabinet door 3, and the technical staff can open cabinet door 3 very conveniently as required and carry out ventilation cooling to the electrical switchgear, perhaps closes cabinet door 3 to reach the mesh that utilizes cabinet door 3 isolated electrical switchgear inside air and make the inside flame of the cabinet body 1 extinguish.

The push rod 8 is made of fusible alloy, and is matched with the memory spring 21, the spike part 22 and the elastic film 23, so that double protection can be provided for the electric switch cabinet. The integral temperature of the electric switch cabinet is higher than the telescopic temperature of the memory spring 21, the memory spring 21 and the spine part 22 can not pierce the elastic film 23, so that the push rod 8 is separated from the clamping groove under the elastic action of the first spiral spring 7, the inner lock cylinder 14 and the second rotating shaft 4 do not need to be rotated by a key, the electric switch cabinet door 3 can be opened for heat dissipation or the opened electric switch cabinet door 3 is closed, the push rod 8 is heated and melted, the positions of the first rotating shaft 2 and the cabinet door 3 are not limited, a technician can conveniently open the cabinet door 3 as required for ventilation and heat dissipation of the electric switch cabinet or close the cabinet door 3, and the purpose of utilizing the cabinet door 3 to isolate the air in the electric switch cabinet to extinguish the flame in the cabinet body 1 is achieved.

Example three:

As shown in fig. 4, the electrical switch cabinet further includes a memory spring 21, a spike portion 22 and an elastic film 23, a second through hole 24 is further disposed in the protruding edge 9, one end of the second through hole 24 is communicated with the slot 10, the other end of the second through hole 24 is communicated with the side wall of the first through hole 13, the peripheral edge of the elastic film 23 is hermetically connected with the side wall of the other end of the second through hole 24, one end of the memory spring 21 is fixedly connected with the side wall of the second through hole 24 far away from the first through hole 13, the other end of the memory spring 21 is fixedly connected with one end of the spike portion 22, and the other end of the spike portion 22 faces the elastic film 23. Specifically, when the memory spring 21 is heated and elongated, the spike 22 may pierce the elastic membrane 23. The memory spring 21 is made of a CuZnAl memory alloy wire by winding and has a two-way memory effect, and the expansion and contraction temperature is 65-95 ℃. That is, when the memory spring 21 is heated and the temperature is higher than the stretching temperature, the length thereof is increased, and the sharp portion 22 is pushed to approach the elastic film 23 and pierce the elastic film 23. At this time, the lubricating grease in the first sealing chamber flows into the slot 10 from the broken elastic membrane 23 through the first through hole 13 and the second through hole 24, and the push rod 8 is separated from the slot under the elastic force of the first spiral spring 7. Through setting up memory spring 21, spine portion 22 and elastic film 23, when electrical switchgear high temperature or conflagration breaing out, need not to rotate interior lock core 14 and second pivot 4 through the key, can be in order to open electrical switchgear cabinet door 3 and dispel the heat or close the electrical switchgear cabinet door 3 that has opened to reach and utilize the isolated electrical switchgear inside air of cabinet door 3 and make the mesh that the inside flame of the cabinet body 1 goes out. In addition, when the electrical switch cabinet is used for a long time and the spring lock is corroded and rusted, and the electrical switch cabinet cannot be opened through a key, the part, opposite to the groove 10, of the protruding edge 9 of the electrical switch cabinet can be heated, so that the memory spring 21 is heated to extend, the spine portion 22 is driven to pierce the elastic film 23, the push rod 8 is further separated from the clamping groove, and the closed electrical switch cabinet is opened.

In this embodiment, the spine 22 is a cone, the bottom of which is fixedly connected to the other end of the memory spring 21, and the diameter of the bottom of the cone is smaller than that of the elastic membrane 23. Thus, after the spike 22 pierces the elastic membrane 23, the grease in the second sealed chamber can smoothly flow into the second through hole 24.

In this embodiment, the surface of the cone is provided with a plurality of notches parallel to the generatrix thereof. The provision of a plurality of notches in the surface of the cone allows grease in the second seal chamber to flow more rapidly into the second through-hole 24.

In this embodiment, the cross section of the push rod 8 and the locking groove are regular hexagons. In this way, by rotating the second rotating shaft 4, the nut column 5 and the piston 6 are driven to move toward the first coil spring 7, and then the other end of the push rod 8 is driven to be inserted into the slot, so that the cabinet door 3 can be limited to three angles of 0 degree, 60 degrees, 120 degrees and 180 degrees.

In this embodiment, outer lock core and interior lock core all adopt aluminum alloy material to make to alleviate the weight of whole electric switch cabinet, make things convenient for the technical staff to remove the transport to electric switch cabinet.

As shown in fig. 5 and 6, in this embodiment, the electrical switch cabinet further includes a first round bar 25, a push rod 26, a third spiral spring 27 and a rubber block 28, a third inner cavity 29 is further disposed in the protruding edge 9, a groove 30 is disposed on a side wall of the slot 10 away from the first rotating shaft 2, the rubber block 28 is connected to the groove 30 in a sliding manner, one end of the third inner cavity 29 is communicated with the groove 30, one end of the push rod 26 extends into the third inner cavity 29 and is connected to a side wall of the third inner cavity 29 in a sliding and sealing manner, the other end of the push rod 26 is fixedly connected to one end of the third spiral spring 27, the other end of the third spiral spring 27 is fixedly connected to a side surface of the rubber block 28 away from the first rotating shaft 2, the first round bar 25 is connected to a side wall of the third inner cavity 29 close to the piston 6 in a sliding and sealing manner, just the one end of first round bar 25 stretches into in the third inner chamber 29, the other end of first round bar 25 stretches into in the first inner chamber 11 and be located piston 6 with between the interior lock core 14, the peripheral surface of the one end of first round bar 25 is equipped with first stopper 31, form the sealed cavity of second between third inner chamber 29, first round bar 25 and the ejector pin 26, it has lubricating grease to fill in the sealed cavity of second. Specifically, when the push rod 8 is inserted into the slot and the piston 6 is separated from the first round bar 25, the first round bar 25 can be restored to the original position by the rubber block 28 and the third coil spring 27. The first stopper 31 is disposed to prevent one end of the first rod 25 from being located in the third cavity 29 all the time.

When the key is inserted into the inner cylinder 14 of the pin tumbler lock to unlock the pin tumbler lock, the first round bar 25 can be pushed to the third inner cavity 29 by the piston 6 by rotating the inner cylinder 14 and the first rotating shaft 2 to make the nut column 5 and the piston 6 approach the second rotating shaft 4 under the action of the second rotating shaft 4. During the process of moving the first round rod 25 to the third inner cavity 29, the first round rod 25 drives the push rod 26 and the third coil spring 27 to approach the first rotating shaft 2 through the lubricating grease in the second sealed cavity, so that the rubber block 28 slides along the groove 30 and contacts with the first rotating shaft 2.

In the actual use process, rotate interior lock core 14 earlier for piston 6 moves towards interior lock core 14 direction, and push rod 8 breaks away from with the draw-in groove under the effect of first coil spring 7 elasticity, at this moment, can freely open cabinet door 3 to arbitrary angle. After the door 3 is opened, the inner lock cylinder 14 is rotated continuously in the same direction and the piston 6 is pressed against the first round rod 25, the rubber block 28 is close to the first rotating shaft 2 and the first rotating shaft 2 is tightly contacted, and the position of the door 3 is further limited by the friction force between the rubber block 28 and the first rotating shaft 2.

As shown in fig. 5 and 6, in this embodiment, the electrical switch cabinet further includes a second round rod 32, the second round rod 32 is connected with the third inner cavity 29 in a sliding and sealing manner near the side wall of the piston 6, one end of the second round rod 32 extends into the third inner cavity 29, the other end of the second round rod 32 extends into the first inner cavity 11 and is located between the first round rod 25 and the inner lock cylinder 14, and a second limit block 33 is disposed on an outer peripheral surface of one end of the second round rod 32. A second round bar 32 is arranged between the first round bar 25 and the inner lock cylinder 14, and by continuing to rotate the inner lock cylinder 14 and pressing the piston 6 against the second round bar 32, the ejector rod 26 can be further pushed towards the first rotating shaft 2 by using the lubricating grease in the second sealed chamber, further increasing the elastic force of the third helical spring 27 and the friction force between the rubber block 28 and the first rotating shaft 2.

Preferably, the first round bar 25 and the second round bar 32 are both arc-shaped at one end of the first inner cavity 11.

In the above embodiments, the sizes and dimensions of the components included in the electrical switch cabinet can be adjusted according to actual situations, and are not described herein again.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electrical switch cabinet comprises a cabinet body, a first rotating shaft and a cabinet door, wherein one side of an opening of the cabinet body is provided with a convex edge protruding inwards, the convex edge is provided with a slot, the cabinet door is rotationally connected with the slot through the first rotating shaft, and the electrical switch cabinet is characterized by further comprising a second rotating shaft, a nut column, a piston, a first spiral spring, a push rod and a marble lock, a first inner cavity and a second inner cavity are arranged in the convex edge, the marble lock is installed in a side wall of the first inner cavity far away from the cabinet door, the marble lock comprises an inner lock cylinder, one end of the second rotating shaft is fixedly connected with the inner lock cylinder, the other end of the second rotating shaft extends into the first inner cavity and is in threaded connection with the nut column, and the piston is fixedly connected with one end of the nut column far away from the second rotating shaft, the piston with the inner wall sliding seal of first inner chamber connects, first inner chamber with the second inner chamber communicates through first through-hole, the piston first inner chamber form a first sealed cavity between the push rod, it has lubricating grease to fill in the first sealed cavity, first coil spring's one end with first inner chamber is kept away from the lateral wall fixed connection of second inner chamber, first coil spring's the other end with the one end fixed connection of push rod, the one end of push rod with the inner wall sliding seal of first through-hole connects, the one end of first pivot stretches into in the second inner chamber and be equipped with the other end assorted draw-in groove of push rod.

2. The electrical switch cabinet according to claim 1, wherein the pin tumbler lock further comprises an outer lock cylinder, a second coil spring, an outer pin tumbler and an inner pin tumbler, wherein at least one outer pin tumbler hole is formed in the outer lock cylinder, an inner pin tumbler hole matched with the outer pin tumbler hole is formed in the inner lock cylinder, the inner lock cylinder is sleeved in the outer lock cylinder, the second coil spring and the outer pin tumbler are installed in the outer pin tumbler hole, one end of the second coil spring is in contact with a side wall of the outer pin tumbler hole, which is far away from the inner lock cylinder, the other end of the second coil spring is in contact with one end of the outer pin tumbler, and the inner pin tumbler is installed in the inner pin tumbler hole.

3. An electrical switchgear cabinet as claimed in any one of the preceding claims, characterized in that the electrical switchgear cabinet further comprises a key which matches the tumbler lock.

4. An electrical switchgear as claimed in any preceding claim, wherein the outer and inner cylinders are made of aluminium alloy.

5. An electrical switchgear cabinet as claimed in any preceding claim, wherein said slots are cross-shaped or regular hexagonal.

6. An electrical switchgear cabinet as claimed in any preceding claim, wherein rubber handles are provided on the cabinet doors.

7. An electrical switchgear, as claimed in any preceding claim, wherein said nut studs are clinch nut studs.

8. An electrical switchgear as claimed in any preceding claim, wherein the bottom of the said cabinet is fitted with rubber feet.