Wire inlet structure of mining high-low voltage switch cabinet

Abstract

The utility model relates to a wire inlet structure of a mining high-low voltage switch cabinet, which comprises a cabinet body, a plurality of mutually independent wire inlets run through the cabinet body, the inner side wall of the cabinet body is provided with a plurality of partition plates which are sequentially arranged at intervals, and the wire inlets are respectively arranged between adjacent partition plates; primary clamping seats are arranged on the partition plate in a sliding mode, the primary clamping seats are oppositely arranged on the two sides of the partition plate, primary threading holes allowing cables to penetrate through are formed in the primary clamping seats in a penetrating mode, clamping springs are arranged on the partition plate, and the clamping springs are used for pushing the primary clamping seats to move in the direction close to the cable inlet; the first-stage clamping seat is provided with a second-stage clamping seat, the second-stage clamping seat is provided with a second-stage threading hole, and the second-stage clamping seat is arranged in the cable inlet direction. According to the invention, the wiring work can be carried out smoothly and conveniently, and the safety and reliability of the cable connection part are improved.

Description

Technical Field

[0001] This application relates to the technical field of switchgear, and in particular to the incoming line structure of a mining high and low voltage switchgear. Background Technology

[0002] Currently, mining high and low voltage switchgear is a crucial electrical equipment used in mining environments such as coal mines for controlling and protecting power systems. These switchgears are categorized into high-voltage and low-voltage types based on their operating voltage. The design and manufacture of mining high and low voltage switchgear must meet specific safety standards and specifications, such as explosion-proof requirements (for environments where flammable gases or dust may be present), seismic resistance, and corrosion resistance, to adapt to harsh working conditions. Furthermore, they must be equipped with advanced monitoring systems to monitor the power system's operating status in real time, ensuring the safety and continuity of mining operations.

[0003] The incoming line of a mining high and low voltage switchgear refers to the process of introducing power from the external power grid or power generation facilities into the switchgear. The incoming line is a critical link in the entire power system, affecting not only its stability and reliability but also directly impacting mine safety. In related technologies, after the cable is introduced into the switchgear, due to wiring distance limitations, the cable is suspended, resulting in poor overall cable stability. Furthermore, it causes inconvenience for subsequent wiring work, reducing the stability and reliability of the connection point. Utility Model Content

[0004] This application provides an incoming line structure for a mining high and low voltage switchgear, which can improve the stability and reliability of the incoming cable, facilitate the smooth progress of wiring work, and improve the safety of the cable connection.

[0005] The incoming line structure of a mining high and low voltage switchgear provided in this application adopts the following technical solution:

[0006] A cable inlet structure for a mining high and low voltage switchgear includes a cabinet with multiple independent cable inlets. Multiple partitions are arranged at intervals along the inner wall of the cabinet, with the cable inlets positioned between adjacent partitions. Primary clamping seats are slidably mounted on the partitions, positioned opposite each other on either side of the partition, sliding towards or away from each other. Each primary clamping seat has a primary through-hole for cable passage. Clamping springs are mounted on the partitions to push each primary clamping seat towards the cable inlet. Secondary clamping seats are mounted on the primary clamping seats, each with a secondary through-hole, arranged along the cable inlet direction.

[0007] Preferably, the primary clamping seat is provided with a guide rod, and the secondary clamping seat is slidably disposed on the guide rod along the length direction of the guide rod; the secondary clamping seat is provided with a fastener, which is used to fix the secondary clamping seat on the guide rod.

[0008] Preferably, the secondary clamping seat is further provided with a connecting rod, which is used to pass through the respective opposite secondary clamping seats. A fastening nut is threaded onto the connecting rod, which is used to connect and fix the opposite secondary clamping seats to each other.

[0009] Preferably, a fixed pulley is rotatably provided on the partition plate, and a traction rope is provided between the opposing primary clamping seats. The traction rope is wound around the fixed pulley. The two ends of the traction rope are respectively fixedly connected to the corresponding primary clamping seats. The traction rope is used to drive the opposing primary clamping seats to move in a direction of separation.

[0010] Preferably, the partition plate has a through groove, the length of which extends along the sliding direction of the primary clamping seat; the primary clamping seat is provided with a connecting post located in the groove, and the end of the traction rope is sleeved on the corresponding connecting post.

[0011] Preferably, the primary clamping seat is provided with a handle.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] When the cable is introduced into the cabinet from the bottom inlet, the first-level clamping seats located on the front and rear sides of the cable will press against the outer wall of the cable under the elastic force of their respective clamping springs. At this time, the cable will be limited and fixed in the first-level wire hole, realizing the initial limitation and fixation of the cable, which facilitates the subsequent wiring and fixing work.

[0014] The primary and secondary clamping seats can simultaneously clamp and fix the cable, thus ensuring its stability and reliability. This effectively mitigates the adverse effects of the cable being suspended, facilitates smooth wiring work, and improves the safety and reliability of cable connections.

[0015] By pulling the handle, the primary clamping seat is pulled towards the cabinet door. At this time, the primary clamping seat 3 on the other side of the same guide rod will move gradually away from the cabinet door along the guide rod under the traction of the traction rope and the fixed pulley. At this time, the primary wire hole and the secondary wire hole will be opened simultaneously, which facilitates the cable entry. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of fixing the cable inside the cabinet according to an embodiment of this application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the overall structure from the bottom view;

[0018] Figure 3 This is a schematic diagram highlighting a portion of the structure at the partition.

[0019] Figure 4 yes Figure 3 A schematic diagram of a partial structural explosion.

[0020] Explanation of reference numerals in the attached diagram: 1. Cabinet; 10. Cable inlet; 2. Partition; 20. Fixed pulley; 200. Slide rod; 21. Traction rope; 22. Clearance groove; 3. Primary clamping seat; 30. Primary cable hole; 300. Threaded hole; 31. Guide rod; 32. Connecting column; 33. Handle; 4. Clamping spring; 5. Secondary clamping seat; 50. Secondary cable hole; 51. Fastener; 52. Connecting rod; 53. Fastening nut. Detailed Implementation

[0021] The present application will be further described in detail below with reference to the accompanying drawings.

[0022] This application discloses an incoming line structure for a mining high and low voltage switchgear.

[0023] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, the incoming line structure of the mining high and low voltage switchgear includes a cabinet 1. Multiple independent cable inlets 10 are connected to the bottom of the cabinet 1, arranged at intervals, and are used to allow external cables to enter the cabinet 1. Multiple partitions 2 are fixedly installed on the inner bottom wall of the cabinet 1, arranged at intervals, and are parallel to each other. The cable inlets 10 are respectively located between two adjacent partitions 2.

[0024] like Figure 3 , Figure 4 As shown, a slide rod 200 is horizontally arranged on the partition 2. Two primary clamping seats 3 are slidably arranged between two adjacent partitions 2 via the slide rod 200. The primary clamping seats 3 are arranged opposite each other on the front and rear sides of the partition 2. The left and right sides of the primary clamping seats 3 are respectively movably inserted through the outside of their respective opposite slide rods 200, and the primary clamping seats 3 are slidably arranged above their respective inlets 10 along the length direction of the slide rods 200. The primary clamping seats 3 have a through hole 30 for the cable to pass through. A clamping spring 4 is sleeved on the slide rod 200, and the clamping spring 4 extends and retracts along the sliding direction of the primary clamping seats 3. The primary clamping seats 3 located on both sides of the partition 2 slide towards or away from each other along the length direction of the slide rod 200.

[0025] like Figure 3 , Figure 4 As shown, one end of the clamping spring 4 abuts against the inner wall of the partition 2, and the other end of the clamping spring 4 abuts against the respective primary clamping seat 3. The clamping spring 4 is used to push the respective primary clamping seat 3 to move closer to the cable inlet 10. When the cable is introduced into the cabinet 1 from the bottom cable inlet 10, the primary clamping seats 3 located on the front and rear sides of the cable will be pressed against the outer wall of the cable under the elastic force of their respective clamping springs 4. At this time, the cable will be limited and fixed in the primary cable hole 30, realizing the initial limitation and fixation of the cable, which facilitates the subsequent wiring and cable fixing work.

[0026] like Figure 3 , Figure 4 As shown, two parallel guide rods 31 are fixedly installed above the primary clamping seat 3, with the length of the guide rods 31 extending along the cable inlet direction. Multiple secondary clamping seats 5 are movably mounted above the primary clamping seat 3 via the guide rods 31. The number of secondary clamping seats 5 can be increased or decreased according to actual needs; in this embodiment, one secondary clamping seat 5 is provided on each primary clamping seat 3 for illustration. The left and right sides of the secondary clamping seat 5 are movably inserted through the outside of their respective opposing guide rods 31, and the secondary clamping seats 5 rise and fall along the length direction of the guide rods 31. Fasteners 51 are inserted into the secondary clamping seats 5. Multiple threaded holes 300 are provided on the guide rods 31, arranged sequentially at intervals along the length direction of the guide rods 31. The fasteners 51 are used to tighten and fix the secondary clamping seats 5 within the threaded holes 300, thus fixing the secondary clamping seats 5 at a specified height on the guide rods 31.

[0027] like Figure 3 , Figure 4 As shown, the secondary clamping seat 5 is provided with a secondary cable threading hole 50 opposite to the primary cable threading hole 30 below, through which the cable is threaded and confined. The secondary clamping seat 5 is also provided with a connecting rod 52, which is symmetrically arranged on the left and right sides of the secondary cable threading hole 50. The length of the connecting rod 52 extends horizontally, and the connecting rod 52 is used to thread onto its respective corresponding secondary clamping seat 5. The end of the connecting rod 52 protrudes from the outer wall of the corresponding secondary clamping seat 5, and a fastening nut 53 is threaded onto the protruding connecting rod 52. The fastening nut 53 is used to connect and fix the corresponding secondary clamping seats 5 together.

[0028] When the cable is being fed into the cabinet 1, the secondary clamping seat 5 can be adjusted to an appropriate height along the guide rod 31 according to the cable length. Then, the fastener 51 is tightened into the threaded hole 300 at the appropriate position, thus fixing the secondary clamping seat 5 at the designated height of the guide rod 31. Next, the cable is sequentially threaded through the primary through hole 30 and the secondary through hole 50. Finally, the fastening nut 53 is tightened to the end of the connecting rod 52. As the fastening nut 53 is continuously tightened, the primary clamping seat 3 and the secondary clamping seat 5 can simultaneously clamp and fix the cable, thereby ensuring the stability and reliability of the cable. This effectively alleviates the adverse effects caused by the cable being suspended, facilitates the smooth progress of wiring work, and improves the safety and reliability of the cable connection.

[0029] like Figure 3 , Figure 4 As shown, a clearance groove 22 extends through the upper surface of the partition 2, and the length of the clearance groove 22 extends along the sliding direction of the primary clamping seat 3. A connecting post 32 is fixedly installed on the primary clamping seat 3 within the clearance groove 22, and the connecting post 32 slides within the clearance groove 22 along with the primary clamping seat 3. A fixed pulley 20 is rotatably installed on the partition 2, and a traction rope 21 is installed between the two primary clamping seats 3 arranged opposite each other, and the traction rope 21 is wound around the fixed pulley 20. The ends of the traction rope 21 are respectively sleeved on the outside of the corresponding connecting post 32 of the primary clamping seat 3 arranged opposite each other.

[0030] like Figure 3 , Figure 4 As shown, the traction rope 21 is used to move the primary clamping seats 3, which are arranged opposite each other, in a direction of separation. A handle 33 is fixedly installed on the primary clamping seat 3 near the cabinet door of the cabinet 1. Before the cable enters, the primary clamping seat 3 is pulled towards the cabinet door by pulling the handle 33. At this time, the primary clamping seat 3 on the other side of the same guide rod 31 will gradually move away from the cabinet door of the cabinet 1 under the traction of the traction rope 21 and the fixed pulley 20. At this time, the primary cable hole 30 and the secondary cable hole 50 will be opened simultaneously, thus facilitating the cable entry.

[0031] The implementation principle is as follows: When the cable enters the cabinet 1, the secondary clamping seat 5 is adjusted to an appropriate height along the guide rod 31 according to the cable length. Then, the fastener 51 is tightened and fixed in the threaded hole 300 at the appropriate position, thus fixing the secondary clamping seat 5 at the designated height of the guide rod 31. Next, the cable is sequentially threaded through the primary through hole 30 and the secondary through hole 50. Finally, the fastening nut 53 is tightened and fixed to the end of the connecting rod 52. As the fastening nut 53 is continuously tightened, the primary clamping seat 3 and the secondary clamping seat 5 can simultaneously clamp and fix the cable, thereby ensuring the stability and reliability of the cable. This effectively alleviates the adverse effects caused by the cable being suspended, facilitates the smooth progress of wiring work, and improves the safety and reliability of the cable connection.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-low voltage switch cabinet for mine, comprising a cabinet body (1), a plurality of independent incoming line ports (10) are through in the cabinet body (1), characterized in that: The inner side wall of the cabinet body (1) is provided with a plurality of partitions (2) arranged in sequence at intervals, and the incoming line ports (10) are respectively arranged between adjacent partitions (2); a first clamping seat (3) is slidably arranged on the partition (2), and the first clamping seats (3) arranged on the two sides of the partition (2) are arranged oppositely and slide in the direction of approaching or moving away from each other; a first threading hole (30) for the cable to pass through is formed through the first clamping seat (3), and a clamping spring (4) is arranged on the partition (2), which is used to push the respective first clamping seat (3) to move in the direction of approaching the incoming line port (10); a second clamping seat (5) is arranged on the first clamping seat (3), and a second threading hole (50) is arranged on the second clamping seat (5), and the second clamping seat (5) is arranged in the incoming direction of the cable.

2. The high-low voltage switchgear inlet structure for mine according to claim 1, characterized in that: A guide rod (31) is arranged on the first clamping seat (3), and the second clamping seat (5) is slidably arranged on the guide rod (31) in the length direction of the guide rod (31); a fastener (51) is arranged on the second clamping seat (5), which is used to fix the second clamping seat (5) on the guide rod (31).

3. The high-low voltage switchgear inlet structure for mine according to claim 2, characterized in that: A connecting rod (52) is further arranged on the second clamping seat (5), which is used to pass through the respective opposite second clamping seats (5), and a fastening nut (53) is threadedly connected to the connecting rod (52), which is used to connect and fix the opposite second clamping seats (5) to each other.

4. The high-low voltage switchgear inlet structure for mine according to claim 1, characterized in that: A fixed pulley (20) is rotatably arranged on the partition (2), a traction rope (21) is arranged between the oppositely arranged first clamping seats (3), and the traction rope (21) is wound around the fixed pulley (20); the two ends of the traction rope (21) are respectively fixedly connected to the corresponding first clamping seats (3), and the traction rope (21) is used to drive the oppositely arranged first clamping seats (3) to move in the direction of moving away from each other.

5. The high-low voltage switchgear inlet structure for mine use according to claim 4, characterized in that: A displacement slot (22) is formed through the partition (2), and the length of the displacement slot (22) extends in the sliding direction of the first clamping seat (3); a connecting column (32) is arranged on the first clamping seat (3) and located in the displacement slot (22), and the end of the traction rope (21) is sleeved on the corresponding connecting column (32).

6. The high-low voltage switchgear's incoming line structure for mine according to claim 5, characterized in that: A handle (33) is arranged on the first clamping seat (3).

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