Low-voltage switch cabinet body

Abstract

The utility model relates to a low-voltage switch cabinet body. The technical problem to be solved by the utility model is to provide a low-voltage switch cabinet body. According to the technical scheme, the switch cabinet comprises a switch cabinet frame, a switch cabinet installation beam, a circuit breaker positioning assembly and a circuit breaker, a circuit breaker clamping groove is formed in the bottom of the circuit breaker, the circuit breaker positioning assembly comprises a circuit breaker bearing mainboard, a circuit breaker clamping plate, a clamping plate limiting assembly and a buffer spring, the circuit breaker clamping plate comprises a clamping plate U-shaped part, and the clamping plate U-shaped part is connected with the circuit breaker bearing mainboard. The two ends of the clamping plate U-shaped part are sequentially and vertically bent to form a clamping plate attaching part and a clamping plate clamping part, and clamping plate limiting openings are formed in the left side and the right side of the clamping plate U-shaped part. The utility model has the advantages that the unthreaded connection of the circuit breaker is realized through the interaction of the circuit breaker clamping plate and the clamping plate limiting assembly, the connection is firm and reliable, the installation and the disassembly are more convenient, and the later maintenance is facilitated; the buffer spring can improve the anti-vibration capability after the circuit breaker is installed, the vibration buffering effect is good, and the service life of the circuit breaker is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to a low-voltage switch cabinet. Background Technology

[0002] Low-voltage switchgear is an electrical device used in power distribution systems, typically in three-phase four-wire or five-wire systems with a rated voltage of 380V and below, serving as the core device for power distribution, control, and protection. Existing low-voltage switchgear contains circuit breakers arranged in multiple rows. These circuit breakers are generally bolted to the mounting plate, requiring repeated tightening with specialized tools. Disassembly and maintenance are time-consuming and labor-intensive. Furthermore, because the circuit breaker is in direct contact with the mounting plate, vibrations caused by electromagnetic forces or the external environment during cabinet operation are easily transmitted to internal components, leading to loose bolts and contact misalignment, thus affecting the service life of the circuit breaker. Therefore, improvements and optimizations are needed to address these issues. Utility Model Content

[0003] To solve the above problems, the technical problem to be solved by this utility model is to provide a low-voltage switch cabinet.

[0004] The technical solution adopted by this utility model for a low-voltage switchgear is characterized by comprising a switchgear frame, switchgear mounting beams horizontally arranged within the switchgear frame, circuit breaker positioning components longitudinally arranged on two of the switchgear mounting beams, and circuit breakers arranged sequentially from top to bottom on the circuit breaker positioning components. Each circuit breaker has a slot at its bottom. The circuit breaker positioning components include a circuit breaker receiving main board, a circuit breaker retaining plate, a retaining plate limiting component horizontally arranged on the back of the circuit breaker receiving main board, and a buffer spring. The circuit breaker retaining plate includes a U-shaped portion, the two ends of which are vertically bent sequentially to form a horizontally arranged retaining portion and a part for insertion. The circuit breaker receiving main board includes a receiving base plate body. The back of the receiving base plate body is provided with a base plate main limiting block and a base plate first positioning block. The base plate main limiting block is provided with a base plate docking groove for inserting the U-shaped part of the card plate. The side wall of the base plate docking groove is provided with a base plate main docking interface corresponding to the card plate limiting opening. The front of the receiving base plate body is provided with spring positioning grooves at both ends of the base plate main limiting block. The buffer spring is placed in the spring positioning groove and its upper end abuts against the bottom of the circuit breaker.

[0005] The card plate limiting assembly includes an anti-detachment block, a screw, and a pre-tightening spring inserted into the main limiting block of the substrate. The screw passes through the first positioning block of the substrate and is threadedly connected to the anti-detachment block. The pre-tightening spring is sleeved on the screw, with one end abutting against the anti-detachment block and the other end abutting against the first positioning block of the substrate.

[0006] The back of the receiving substrate is also provided with a second positioning block. The side of the second positioning block is provided with a positioning block receiving groove corresponding to the anti-detachment block. Under the action of the pre-tightening spring, the anti-detachment block passes through the main interface of the substrate and the card plate limiting port in sequence and is placed in the positioning block receiving groove.

[0007] The number of screws is two, and the clamping plate limiting assembly also includes a hand lever sleeved on the two screws, the hand lever being placed outside the first positioning block of the base plate.

[0008] The circuit breaker positioning assembly also includes a reinforcing insert plate. The receiving base plate has an insert plate limiting seat at the side end of the base plate mating groove. The insert plate limiting seat has an insert plate slot. The reinforcing insert plate passes through the insert plate slot and is placed above the slot plate fitting part.

[0009] The circuit breaker positioning assembly also includes an insulating partition, the bottom of which is provided with a partition limiting part, and the receiving base plate is provided with a partition limiting groove corresponding to the partition limiting part at the other end of the base plate mating groove.

[0010] The advantages of this utility model of low-voltage switch cabinet are: the interaction between the circuit breaker plate and the plate limiting component achieves a threadless connection to the circuit breaker, which is firm and reliable, easier to install and disassemble, and convenient for later maintenance; the buffer spring can improve the anti-vibration capability of the circuit breaker after installation, with good vibration damping effect, effectively improving the service life of the circuit breaker. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the internal structure of the low-voltage switch cabinet of this utility model;

[0013] Figure 2 This is a side view of the circuit breaker of this utility model;

[0014] Figure 3 This is a schematic diagram of the circuit breaker positioning assembly of this utility model;

[0015] Figure 4 This is a schematic diagram of the circuit breaker plate of this utility model;

[0016] Figure 5 This is a schematic diagram of the front structure of the circuit breaker receiving main board of this utility model;

[0017] Figure 6 This is a schematic diagram of the back structure of the circuit breaker receiving main board of this utility model;

[0018] Figure 7This is a schematic diagram of the structure of the card plate limiting component of this utility model;

[0019] Figure 8 This is a schematic diagram of the structure of the insulating partition of this utility model. Detailed Implementation

[0020] like Figure 1-8 As shown, the low-voltage switchgear of this utility model includes a switchgear frame 1, a switchgear mounting beam 2 horizontally arranged within the switchgear frame 1, a circuit breaker positioning assembly 3 longitudinally arranged on two of the switchgear mounting beams 2, and circuit breakers 4 arranged sequentially from top to bottom on the circuit breaker positioning assembly 3. Each circuit breaker 4 has a circuit breaker slot 6 at its bottom. The circuit breaker positioning assembly 3 includes a circuit breaker receiving main board 7, a circuit breaker retaining plate 8, a retaining plate limiting assembly 9 horizontally arranged on the back of the circuit breaker receiving main board 7, and a buffer spring. Spring 10, the circuit breaker latch 8 includes a U-shaped latch 14, the two ends of the U-shaped latch 14 are bent vertically in sequence to form a horizontally arranged latch fitting part 15 and a latch engaging part 16 for insertion into the circuit breaker latch slot 6, the U-shaped latch 14 is provided with latch limiting openings 17 on the left and right sides, the circuit breaker receiving main board 7 includes a receiving base plate body 20, the back of the receiving base plate body 20 is provided with a base plate main limiting block 21 and a base plate first positioning block 25, the base plate main limiting block 21 is provided with a U-shaped latch 14 for the U-shaped latch 14. The substrate mating groove 22 is inserted into the substrate 14. The side wall of the substrate mating groove 22 is provided with a substrate main mating interface 23 corresponding to the card plate limiting port 17. The front of the receiving substrate plate 20 is provided with spring positioning grooves 24 at both ends of the substrate main limiting block 21. The buffer spring 10 is placed in the spring positioning groove 24 and its upper end abuts against the bottom of the circuit breaker 4. The card plate limiting assembly 9 includes an anti-dislodgement block 28, a screw 29 and a preload spring 30 inserted into the substrate main limiting block 21. The screw 29 passes through the substrate. The first positioning block 25 of the plate is threadedly connected to the anti-detachment block 28. The pre-tightening spring 30 is sleeved on the screw 29, with one end abutting against the anti-detachment block 28 and the other end abutting against the first positioning block 25 of the base plate. The circuit breaker 4 is connected to the plate without threads through the interaction of the circuit breaker clamping plate 8 and the clamping plate limiting assembly 9. The connection is firm and reliable, and the installation and disassembly are more convenient, which facilitates later maintenance. The buffer spring 10 can improve the anti-vibration capability of the circuit breaker 4 after installation, with good vibration damping effect, and effectively improve the service life of the circuit breaker 4.

[0021] The back of the receiving substrate 20 is also provided with a second positioning block 32. The side of the second positioning block 32 is provided with a positioning block receiving groove 33 corresponding to the anti-detachment block 28. Under the action of the pre-tightening spring 30, the anti-detachment block 28 passes through the main mating interface 23 of the substrate and the card plate limiting port 17 in sequence and is placed in the positioning block receiving groove 33, which improves the limiting ability of the anti-detachment block 28 on the circuit breaker card plate 8, making the structure more stable after mating and the anti-detachment more reliable.

[0022] The number of screws 29 is two. The card plate limiting assembly 9 also includes a hand lever 35 sleeved on the two screws 29. The hand lever 35 is placed outside the first positioning block 25 of the base plate to facilitate personnel to pull it out.

[0023] The circuit breaker positioning assembly 3 also includes a reinforcing insert plate 11. The receiving base plate 20 is provided with an insert plate limiting seat 37 at the side end of the base plate docking groove 22. The insert plate limiting seat 37 is provided with an insert plate slot 38. The reinforcing insert plate 11 passes through the insert plate slot 38 and is placed above the slot plate fitting part 15, which locks in both directions and provides higher safety.

[0024] The circuit breaker positioning assembly 3 also includes an insulating partition 12. The bottom of the insulating partition 12 is provided with a partition limiting part 40. The receiving base plate 20 is provided with a partition limiting groove 41 corresponding to the partition limiting part 40 at the other end of the base plate docking groove 22, which provides better insulation protection.

[0025] Installation process: The circuit breaker clamp plate 8 is clamped into the circuit breaker clamp slot 6 of the circuit breaker 4. The circuit breaker clamp plate 8 is then placed in the base plate mating groove 22. The anti-detachment block 28, under the action of the pre-tightening spring 30, passes through the base plate main mating interface 23 and the clamp plate limiting port 17 in sequence and is placed in the positioning block receiving groove 33. The buffer spring 10 is placed in the spring positioning groove 24 and acts on the bottom of the circuit breaker 4 for anti-detachment after installation. Then, the reinforcing insert plate 11 is moved laterally so that it is placed above the clamp plate fitting part 15 to achieve double limiting of the circuit breaker 4. The installation and disassembly are convenient and quick.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A low-voltage switch cabinet, characterized in that: The system includes a switch cabinet frame (1), a switch cabinet mounting beam (2) horizontally arranged within the switch cabinet frame (1), a circuit breaker positioning assembly (3) longitudinally arranged on the two switch cabinet mounting beams (2), and circuit breakers (4) arranged sequentially from top to bottom on the circuit breaker positioning assembly (3). The bottom of each circuit breaker (4) is provided with a circuit breaker slot (6). The circuit breaker positioning assembly (3) includes a circuit breaker receiving main board (7), a circuit breaker clamping plate (8), a clamping plate limiting assembly (9) horizontally arranged on the back of the circuit breaker receiving main board (7), and a buffer spring (10). The circuit breaker clamping plate (8) includes a clamping plate U-shaped part (14), the two ends of which are vertically bent sequentially to form a horizontally arranged clamping plate fitting part (15) and a part for insertion into the circuit breaker slot (6). The card plate latching part (16) has a card plate limiting port (17) on the left and right sides of the card plate U-shaped part (14). The circuit breaker receiving main board (7) includes a receiving base plate body (20). The back of the receiving base plate body (20) is provided with a base plate main limiting block (21) and a base plate first positioning block (25). The base plate main limiting block (21) is provided with a base plate docking groove (22) for inserting the card plate U-shaped part (14). The side wall of the base plate docking groove (22) is provided with a base plate main docking interface (23) corresponding to the card plate limiting port (17). The front of the receiving base plate body (20) is provided with spring positioning grooves (24) at both ends of the base plate main limiting block (21). The buffer spring (10) is placed in the spring positioning groove (24) and its upper end abuts against the bottom of the circuit breaker (4). The card plate limiting assembly (9) includes an anti-detachment block (28), a screw (29) and a preload spring (30) inserted into the main limiting block (21) of the substrate. The screw (29) passes through the first positioning block (25) of the substrate and is threadedly connected to the anti-detachment block (28). The preload spring (30) is sleeved on the screw (29), with one end abutting against the anti-detachment block (28) and the other end abutting against the first positioning block (25) of the substrate.

2. The low-voltage switch cabinet according to claim 1, characterized in that: The back of the receiving substrate plate (20) is also provided with a substrate second positioning block (32). The side of the substrate second positioning block (32) is provided with a positioning block receiving groove (33) corresponding to the anti-dropping block (28). Under the action of the pre-tightening spring (30), the anti-dropping block (28) passes through the substrate main interface (23) and the card plate limiting port (17) in sequence and is placed in the positioning block receiving groove (33).

3. The low-voltage switch cabinet according to claim 1, characterized in that: The number of screws (29) is two, and the card plate limiting assembly (9) also includes a hand lever (35) sleeved on the two screws (29), and the hand lever (35) is placed outside the first positioning block (25) of the base plate.

4. The low-voltage switch cabinet according to claim 1, characterized in that: The circuit breaker positioning assembly (3) also includes a reinforcing insert plate (11). The receiving base plate body (20) has an insert plate limiting seat (37) on the side end of the base plate docking groove (22). The insert plate limiting seat (37) has an insert plate slot (38). The reinforcing insert plate (11) passes through the insert plate slot (38) and is placed above the slot plate fitting part (15).

5. The low-voltage switch cabinet according to claim 4, characterized in that: The circuit breaker positioning assembly (3) also includes an insulating partition (12), the bottom of which is provided with a partition limiting part (40), and the receiving substrate plate (20) is provided with a partition limiting groove (41) corresponding to the partition limiting part (40) on the other side of the substrate docking groove (22).

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