Emergency protection low-voltage switch cabinet

Abstract

The application relates to the field of power cabinets, in particular to an emergency-protected low-voltage power switch cabinet, which comprises a cabinet body; the cabinet body is provided with a plurality of heat dissipation holes I; the cabinet body is provided with a plurality of heat dissipation holes II, and the heat dissipation holes II are located below the heat dissipation holes I; the cabinet body is further provided with a top plate and the like; the cabinet body is slidably connected with two movable plates; the two movable plates are fixedly connected with the top plate, and the top plate is located above the cabinet body. After partial collapse occurs in a mine, the movable plates close the heat dissipation holes I, so that the mud or soil blocks generated by the collapse cannot enter the cabinet body through the heat dissipation holes I and the round holes I, and the electrical risk is avoided; meanwhile, the cabinet body is cooled through the heat dissipation holes II at the lower side; after the rectangular plates are extruded outward, the lower side supporting area of the cabinet body is increased, the stability of the cabinet body is improved, the cabinet body is protected in an emergency, and the risk of tilting is reduced.

Description

Technical Field

[0001] This invention relates to the field of power switchgear, and more particularly to an emergency protection low-voltage power switchgear. Background Technology

[0002] Mining low-voltage switchgear is a type of power distribution and control equipment used in underground mines. It is equivalent to the "heart" and "safety guardian" of the mine's power supply system, mainly responsible for receiving and distributing electrical energy, and controlling, protecting, and monitoring underground equipment such as fans, water pumps, and high-voltage motors in real time.

[0003] The power switch cabinets inside the mine need to address both dust prevention and heat dissipation issues. Typically, ventilation holes are installed on the cabinets. Since the switch cabinets are usually unattended, if a partial collapse occurs in the mine, causing soil or even mud to fall onto the cabinets below, the soil or mud will cover the ventilation holes, significantly reducing the cabinet's heat dissipation efficiency and greatly increasing the risk of the cabinet overheating and causing electrical safety hazards. Summary of the Invention

[0004] To overcome the drawback of soil or mud covering the ventilation holes and significantly reducing the heat dissipation efficiency of the cabinet when a partial collapse occurs in the mine and soil or even mud falls onto the cabinet below, this invention provides an emergency protection low-voltage switchgear.

[0005] The technical solution is as follows: A low-voltage power switchgear for emergency protection includes a cabinet; the cabinet has several ventilation holes I; the cabinet has several ventilation holes II, with the ventilation holes II located below the ventilation holes I; it also includes a top plate; the cabinet is slidably connected to two movable plates; the two movable plates are jointly fixed to the top plate, which is located above the cabinet; each movable plate has several circular holes I corresponding in number and position to the ventilation holes I; each movable plate has a connecting plate fixed to its lower side; each connecting plate has a wedge-shaped push plate fixed to its lower side. The push plate is wedge-shaped; several spring rods are fixed to the cabinet; the telescopic ends of all the spring rods on the same side of the cabinet are fixed to a rectangular plate, which is located below the push plate; each rectangular plate has several round holes II, and the number and position of the round holes II correspond to the ventilation holes II; each rectangular plate is fixed to several spring bodies; all the spring bodies on the same rectangular plate are fixed to a baffle, and the baffle is slidably connected to the corresponding rectangular plate; each rectangular plate is fixed to two cover plates, and the cover plates are slidably connected to the cabinet.

[0006] Furthermore, it also includes a limiting plate; a limiting plate is fixedly attached to the underside of each connecting plate.

[0007] Furthermore, the cabinet surface is coated with a silicon carbide coating.

[0008] By adopting the above structure, this invention improves the corrosion resistance and thermal conductivity of the cabinet, and extends its service life.

[0009] Furthermore, the top plate is designed in an arc shape.

[0010] By employing the above-described structure, this invention guides the flow of mud or rocks, reducing the amount of residual mud or rocks on the upper side of the top plate.

[0011] Furthermore, both the movable plate and the rectangular plate are made of alloy material.

[0012] By adopting the above structure, the present invention improves impact resistance and thus extends service life.

[0013] Furthermore, it also includes top rods; rubber pads are provided on the side of the rectangular plate near the cabinet; each baffle is fixedly connected to several top rods, and the top rods are slidably connected to the corresponding rectangular plate; each push plate is rotatably connected to a rotating plate; each rotating plate has a rectangular groove; each push plate is rotatably connected to several support rods; each support rod is fixedly connected to a T-shaped limiting block, and the support rod is located in the rectangular groove, with the number and position of the support rods corresponding to the top rods.

[0014] Furthermore, the limit block is crudely designed.

[0015] Furthermore, it also includes ribs and fins; several ribs are fixedly connected to the lower side of the top plate; several fins are fixedly connected to the upper side of the cabinet, and every two fins are slidably connected to the corresponding ribs.

[0016] Furthermore, the ribs and fins are made of thermally conductive materials.

[0017] Furthermore, each movable plate has several guide grooves on its outer side, and the guide grooves are staggered with the circular holes I.

[0018] The beneficial effects are as follows: After a partial collapse occurs in the mine, the movable plate seals the heat dissipation hole I, preventing mud or soil fragments generated by the collapse from entering the cabinet through the heat dissipation hole I and the round hole I, thus avoiding electrical risks. At the same time, the cabinet is cooled by the heat dissipation hole II on the lower side. Meanwhile, after the rectangular plate is pushed outward, the lower support area of ​​the cabinet is increased, improving the stability of the cabinet, providing emergency protection for the cabinet, and reducing the risk of tipping over.

[0019] In the event of a collapse, the push plate pushes the rectangular panel away, and the rectangular panel comes into contact with the limiting plate. The limiting plate then limits the rectangular panel, improving its stability after being pushed out, and thus enhancing its support strength for the cabinet.

[0020] The ribs increase the impact resistance of the lower side of the top plate and improve its deformation resistance. At the same time, the ribs limit the movement of the fins as they move downwards, ensuring that the ribs support the top plate when it is hit by stones. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the low-voltage power switchgear for emergency protection according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the cabinet disclosed in this invention;

[0023] Figure 3 This is a schematic diagram of the initial state of the movable plate and rectangular plate disclosed in this invention;

[0024] Figure 4 This is a partial sectional view of the cabinet disclosed in this invention;

[0025] Figure 5 This is a diagram showing the state after the movable plate moves down and the rectangular plate is pushed out, as disclosed in this invention.

[0026] Figure 6 This is a partial structural schematic diagram of the connecting plate, push plate, spring rod, rectangular plate, spring body and baffle disclosed in this invention;

[0027] Figure 7 This is a cross-sectional view of the movable plate as it moves downwards, as disclosed in this invention.

[0028] Figure 8 This is a partial structural diagram of the combination of the top rod, tension spring, rotating plate, support rod and limiting block disclosed in this invention.

[0029] Component names and serial numbers in the diagram: 1-Cabinet body, 101-Top plate, 102-Modible plate, 103-Connecting plate, 104-Push plate, 105-Spring rod, 106-Rectangular plate, 107-Spring body, 108-Baffle, 109-Limiting plate, 1010-Cover plate, 201-Top rod, 202-Tension spring, 203-Rotating plate, 204-Support rod, 205-Limiting block, 301-Rib plate, 302-Fin, 11-Heat dissipation hole I, 12-Heat dissipation hole II, 21-Round hole I, 22-Guide groove, 31-Rectangular groove, 61-Round hole II. Detailed Implementation

[0030] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Example 1: An emergency protection low-voltage switchgear, such as Figures 1-8As shown, the device includes a cabinet 1; the cabinet 1 has several ventilation holes I11; the cabinet 1 also has several ventilation holes II12, and the ventilation holes II12 are located below the ventilation holes I11; the device is characterized by further including a top plate 101; two movable plates 102 are slidably connected to the cabinet 1; the two movable plates 102 are fixedly connected to the top plate 101, and the top plate 101 is located above the cabinet 1; each movable plate 102 has several round holes I21, the number and position of which correspond to the ventilation holes I11; each movable plate 102 has a connecting plate 103 fixedly connected to its lower side; each connecting plate 103 has a wedge-shaped push plate 104 fixedly connected to its lower side. Several spring rods 105 are fixedly connected to the cabinet body 1; the telescopic ends of all the spring rods 105 located on the same side of the cabinet body 1 are fixedly connected to a rectangular plate 106, and the rectangular plate 106 is located below the push plate 104; each rectangular plate 106 has several round holes II 61, and the number and position of the round holes II 61 correspond to the heat dissipation holes II 12; each rectangular plate 106 is fixedly connected to several spring bodies 107; all the spring bodies 107 located on the same rectangular plate 106 are fixedly connected to a baffle 108, and the baffle 108 is slidably connected to the corresponding rectangular plate 106; each rectangular plate 106 is fixedly connected to two cover plates 1010, and the cover plates 1010 are slidably connected to the cabinet body 1.

[0032] It also includes a limiting plate 109; each connecting plate 103 has a limiting plate 109 fixedly attached to its lower side.

[0033] The surface of cabinet 1 is coated with a silicon carbide coating, which improves the corrosion resistance and thermal conductivity of cabinet 1 and extends its service life.

[0034] The top plate 101 is arc-shaped to guide the flow of mud or rocks, reducing the amount of mud or rocks remaining on the upper side of the top plate 101.

[0035] Both the movable plate 102 and the rectangular plate 106 are made of alloy material, which improves impact resistance and thus extends service life.

[0036] In this embodiment, the cabinet 1 is placed inside the mine shaft during use. Initially, the heat dissipation hole I11 is aligned with the round hole I21, the rectangular plate 106 is attached to the outside of the cabinet 1, the heat dissipation hole II12 is aligned with the round hole II61, and there is a gap between the baffle 108 and the rectangular plate 106. Figure 4As shown, the upper part of the cabinet 1 is cooled by heat dissipation holes I11 and I21, and the lower part is cooled by heat dissipation holes II12 and II61, improving the heat dissipation effect. When a partial collapse occurs in the mine, rocks falling from above the mine impact the top plate 101, causing the top plate 101 to move the movable plate 102, connecting plate 103, and push plate 104 downwards. This causes the heat dissipation holes I11 and I21 to be misaligned, thus the movable plate 102 seals the heat dissipation hole I11, preventing mud or debris from entering the cabinet 1 through the heat dissipation holes I11 and I21 and causing electrical hazards. When the push plate 104 moves downwards, it pushes the rectangular plate 106 outwards, causing the rectangular plate 106 to move the cover plate 1010 away from the cabinet 1. The spring rod 105 is stretched, creating a gap between the cabinet 1 and the rectangular plate 106. Figure 8 As shown, the cover plate 1010 protects the gap between the cabinet body 1 and the rectangular plate 106, thereby increasing the heat dissipation space and improving the heat dissipation performance of the heat dissipation hole II 12. At the same time, the baffle plate 108 protects the round hole II 61 to prevent falling soil fragments from falling into the round hole II 61 and causing blockage. This allows the cabinet body 1 to dissipate heat through the lower heat dissipation hole II 12 after a partial collapse of the mine tunnel. Meanwhile, the rectangular plate 106 is pushed outward, increasing the lower support area of ​​the cabinet body 1, improving the stability of the cabinet body 1, providing emergency protection for the cabinet body 1, and reducing the risk of tipping over.

[0037] In the event of a collapse, after the push plate 104 pushes the rectangular plate 106 away, the rectangular plate 106 comes into contact with the limiting plate 109. The limiting plate 109 limits the rectangular plate 106, improving the stability of the rectangular plate 106 after it is pushed out, thereby enhancing the support strength of the rectangular plate 106 for the cabinet 1.

[0038] Example 2, based on Example 1, such as Figure 8 As shown, it also includes a top rod 201, a tension spring 202, a rotating plate 203, a support rod 204, and a limiting block 205; a rubber pad is provided on the side of the rectangular plate 106 near the cabinet 1; each baffle 108 is fixedly connected to four top rods 201, and the top rods 201 are slidably connected to the corresponding rectangular plate 106; each push plate 104 is rotatably connected to a rotating plate 203; a tension spring 202 is connected between the push plate 104 and the corresponding rotating plate 203; each rotating plate 203 has a rectangular groove 31; each push plate 104 is rotatably connected to two support rods 204; each support rod 204 is fixedly connected to a T-shaped limiting block 205, and the support rod 204 is located in the rectangular groove 31, and the number and position of the support rods 204 correspond to the top rods 201.

[0039] The limiting block 205 is rough, which increases the friction between the limiting block 205 and the rotating plate 203, thereby improving the support stability of the support rod 204 when it normally supports the rotating plate 203.

[0040] When a partial collapse occurs in the mine shaft, and a secondary collapse inevitably buries cabinet 1 completely, it is necessary to completely prevent soil debris and mud from seeping into cabinet 1 and causing electrical risks. Therefore, after the partial collapse, the first falling rocks or soil cause the top plate 101 to move the movable plate 102, connecting plate 103, and push plate 104 downwards. At this time, the rotating plate 203 is supported by the support rod 204, and the tension spring 202 is stretched, so that the rotating plate 203 forms a wedge shape to push the rectangular plate 106 away and improve heat dissipation. After the rocks generated by the continued collapse are pressed against the baffle 108, the baffle 108 causes the top rod 201 to slide to one side of the rectangular plate 106, and the spring body 107 is compressed until the baffle 108 is in contact with the rectangular plate 106. The round hole II 61 is covered, and when the top rod 201 moves, it presses the limiting block 205, causing the limiting block 205 to drive the support rod 204 to rotate towards the side closer to the push plate 104, until the limiting block 205 disengages from the rectangular groove 31 and releases the limiting on the rotating plate 203. Then, the rotating plate 203 rotates to a vertical position under the elastic force of the tension spring 202, so that the rotating plate 203 releases the limiting on the rectangular plate 106. Then, the rectangular plate 106 adheres to the side of the cabinet 1 under the elastic force of the spring rod 105. The rubber pad increases the sealing performance between the rectangular plate 106 and the side of the cabinet 1, thereby completely sealing the heat dissipation hole II 12 and the round hole II 61, preventing the collapsed mud or soil from entering the cabinet 1, and isolating and protecting the cabinet 1.

[0041] Example 3, based on Example 2, such as Figure 2 As shown, it also includes ribs 301 and fins 302; several ribs 301 are fixedly connected to the lower side of the top plate 101; several fins 302 are fixedly connected to the upper side of the cabinet 1, and every two fins 302 are slidably connected to the corresponding ribs 301.

[0042] The ribs 301 and fins 302 are made of thermally conductive materials. During normal use, the ribs 301 and fins 302, which are made of thermally conductive materials, assist the cabinet 1 in dissipating heat, thereby improving the heat dissipation performance of the cabinet 1.

[0043] Each movable plate 102 has several guide grooves 22 on its outer side, and the guide grooves 22 and the circular holes I 21 are distributed alternately.

[0044] Considering that if the roof 101 is dented or deformed when rocks fall and hit it in the mine, it will be unable to move down smoothly, which will affect the downward movement of the movable plate 102 and the push plate 104. To solve this problem, the rib plate 301 is used to increase the impact resistance of the lower side of the roof 101 and improve its deformation resistance. At the same time, the fin plate 302 is used to limit the movement of the rib plate 301 during downward movement, ensuring that the rib plate 301 supports the roof 101 when it is hit by rocks.

[0045] Considering that when a partial collapse occurs in the mine, the mud or water flowing down to the top plate 101 will flow to the outside of the movable plate 102, and then cover the circular hole I21 on the outside of the movable plate 102, causing the mud or water to seep into the heat dissipation hole I11 along the gap between the movable plate 102 and the cabinet 1, causing water leakage into the cabinet 1, a guide channel 22 is opened on the outside of the movable plate 102, which is staggered with the circular hole I21, so as to guide the mud or water to the connecting plate 103 to flow away, and prevent the mud and water from flowing into the circular hole I21.

[0046] The technical principles of the embodiments of the present invention have been described above with reference to specific examples. These descriptions are merely for explaining the principles of the embodiments of the present invention and should not be construed as limiting the scope of protection of the embodiments of the present invention in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the embodiments of the present invention.

Claims

1. An emergency protection low-voltage switchgear, comprising a cabinet (1); the cabinet (1) having a plurality of heat dissipation holes I (11); the cabinet (1) having a plurality of heat dissipation holes II (12), wherein the heat dissipation holes II (12) are located below the heat dissipation holes I (11); characterized in that: It also includes a top plate (101); the cabinet (1) is slidably connected to two movable plates (102); the two movable plates (102) are fixedly connected to the top plate (101), and the top plate (101) is located above the cabinet (1); each movable plate (102) has several circular holes (21) in number and position corresponding to the heat dissipation holes (11); each movable plate (102) has a connecting plate (103) fixedly connected to its lower side; each connecting plate (103) has a wedge-shaped push plate (104) fixedly connected to its lower side, and the push plate (104) is wedge-shaped; the cabinet (1) is fixedly connected to several spring rods (105); all the spring rods (105) located on the same side of the cabinet (1) Each telescopic end is fixedly connected to a rectangular plate (106), and the rectangular plate (106) is located below the push plate (104); each rectangular plate (106) has several round holes II (61), and the number and position of the round holes II (61) correspond to the heat dissipation holes II (12); each rectangular plate (106) is fixedly connected to several spring bodies (107); all the spring bodies (107) located on the same rectangular plate (106) are fixedly connected to a baffle (108), and the baffle (108) is slidably connected to the corresponding rectangular plate (106); each rectangular plate (106) is fixedly connected to two cover plates (1010), and the cover plates (1010) are slidably connected to the cabinet (1).

2. The emergency protection low-voltage switchgear according to claim 1, characterized in that: It also includes a limiting plate (109); each connecting plate (103) has a limiting plate (109) fixedly attached to its lower side.

3. The emergency protection low-voltage switchgear according to claim 1, characterized in that: The surface of the cabinet (1) is coated with a silicon carbide coating.

4. The emergency protection low-voltage switchgear according to claim 1, characterized in that: The top plate (101) is set in an arc shape.

5. The emergency protection low-voltage switchgear according to claim 1, characterized in that: Both the movable plate (102) and the rectangular plate (106) are made of alloy.

6. The emergency protection low-voltage switchgear according to claim 1, characterized in that: It also includes a top rod (201); a rubber pad is provided on the side of the rectangular plate (106) near the cabinet (1); each baffle (108) is fixedly connected to several top rods (201), and the top rods (201) are slidably connected to the corresponding rectangular plate (106); each push plate (104) is rotatably connected to a rotating plate (203); each rotating plate (203) is provided with a rectangular groove (31); each push plate (104) is rotatably connected to several support rods (204); each support rod (204) is fixedly connected to a T-shaped limiting block (205), and the support rods (204) are located in the rectangular grooves (31), and the number and position of the support rods (204) correspond to the top rods (201).

7. The emergency protection low-voltage switchgear according to claim 6, characterized in that: The limit block (205) is roughly set.

8. The emergency protection low-voltage switchgear according to claim 1, characterized in that: It also includes ribs (301) and fins (302); several ribs (301) are fixedly connected to the lower side of the top plate (101); several fins (302) are fixedly connected to the upper side of the cabinet (1), and every two fins (302) are slidably connected to the corresponding ribs (301).

9. The emergency protection low-voltage switchgear according to claim 8, characterized in that: The ribs (301) and fins (302) are made of thermally conductive materials.

10. The emergency protection low-voltage switchgear according to claim 1, characterized in that: Each movable plate (102) has several guide grooves (22) on its outer side, and the guide grooves (22) and the circular holes I (21) are staggered.

Images