Low-voltage draw-out type switch cabinet

Abstract

The utility model discloses a low-voltage draw-out type switch cabinet which comprises a cabinet body, the cabinet body is provided with a plurality of drawer grooves from top to bottom, drawer units capable of being pushed and pulled are arranged in the drawer grooves, two sides of each drawer groove are provided with guide rails, two ends of each guide rail are provided with check blocks, the guide rails are provided with sliding blocks capable of sliding, and the sliding blocks are provided with sliding blocks capable of sliding. The sliding block is arranged in the drawer unit and fixedly connected with the drawer unit, the sliding block is provided with two telescopic ejector rods, a spring is arranged in the sliding block and abuts against the ejector rods, so that the ejector rods protrude out of one side of the sliding block, and an abutting block and a check block facing the pulling-out direction of the drawer unit are arranged between the ejector rods. According to the utility model, the spring is used for absorbing the impact force of the slide block on the stop block, reducing the impact force of the slide block on the stop block, ensuring the connection stability of the stop block and the guide rail, and preventing devices in the drawer unit from being impacted violently by the spring, so that the stability of the devices in the drawer unit is ensured, and the product has the advantages of buffering function.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a low-voltage drawable switch cabinet. Background Art

[0002] Low voltage withdrawable switchgear is widely used in power distribution centers PC and motor control centers MCC in power plants, substations, factories, mines and high-rise buildings.

[0003] The existing withdrawable switch cabinet is provided with several drawer units, and a large number of devices are usually installed in the drawer units, which increases the deadweight of the drawer units. When the drawer units are pulled out during maintenance, due to excessive pulling force, the drawer units move at a relatively high speed and will violently hit the blocks of the guide rails on both sides of the drawer units. Over time, the blocks will detach from the guide rails, causing the drawer units to be completely pulled out of the cabinet body, making it easy for the drawer units to fall to the ground and be damaged, and cut off the wires connected to the devices, prolonging the maintenance time. Therefore, the applicant has made a beneficial design and found a solution to the above-mentioned problem. The technical solution to be introduced below is produced in this context. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the design proposed in the above background technology and to provide a product with a buffering function.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A low-voltage withdrawable switch cabinet comprises a cabinet body, wherein the cabinet body is provided with a plurality of drawer slots from top to bottom, wherein the drawer slots are provided with push-pull drawer units, wherein guide rails are provided on both sides of the drawer slots, wherein both ends of the guide rails are provided with blocks, wherein the guide rails are provided with slidable sliders and are connected and fixed to the drawer units, wherein the sliders are provided with two retractable push rods, wherein the sliders are provided with springs and abut against the push rods so that the push rods protrude from one side of the sliders, wherein a resisting block is provided between the push rods and faces the block in the direction in which the drawer units are pulled out.

[0007] Preferably, a plurality of balls are provided between the slider and the guide rail, and the slider and the guide rail are provided with sliding grooves for the balls to roll.

[0008] Preferably, the sliding block is provided with a through hole for the extension and retraction of the push rod, one end of the through hole is provided with a blind hole, and the other ends of the two through holes are provided with grooves for accommodating the abutment blocks.

[0009] Preferably, the push rod is provided with a pressure-bearing portion and is slidably arranged in the blind hole.

[0010] Preferably, a support column is provided at the end face of the blind hole. The support column is provided with a limiting portion, and a spacing for the linkage block to enter the groove is maintained between the support column and the pressure-bearing portion.

[0011] Preferably, the spring is arranged on the outer wall of the limiting portion and abuts against the pressure-bearing portion.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, when the drawer unit is pulled out, the fast-moving drawer unit drives the slider to move together. When the linkage block abuts against the stop block, the ejector rod retracts inward. The spring is squeezed by the ejector rod, reducing the pitch of the spring and absorbing the impact energy, reducing the impact force of the slider on the stop block, ensuring the connection stability between the stop block and the guide rail; and, the spring also prevents the components in the drawer unit from being violently impacted, thereby ensuring the stability of the components in the drawer unit, making the product have the advantage of a buffering function. Description of the drawings

[0015] Figure 1 It is a schematic side sectional structure view of a low-voltage draw-out switchgear of the present utility model;

[0016] Figure 2 It is of the present utility model Figure 2 An enlarged view of the partial structure A of a low-voltage draw-out switchgear;

[0017] Figure 3 It is an exploded view of a low-voltage draw-out switchgear of the present utility model Figure 1 ;

[0018] Figure 4 It is an exploded view of a low-voltage draw-out switchgear of the present utility model Figure 2 ;

[0019] The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0020] Reference numerals: 1, cabinet body; 2, guide rail; 3, slider; 4, ejector rod; 5, abutting block; 6, ball; 7, chute; 8, support column; 11, drawer slot; 12, drawer unit; 21, stop block; 31, spring; 32, through hole; 33, blind hole; 34, groove; 41, pressure-bearing portion; 81, limiting portion. Specific embodiments

[0021] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0023] In the embodiments of the present utility model, "and / or" only describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0024] Reference example Figures 1 to 4 , a low-voltage draw-out switch cabinet, including a cabinet body 1. The cabinet body 1 is provided with a plurality of drawer slots 11 from top to bottom. A push-pullable drawer unit 12 is arranged in the drawer slots 11. Guide rails 2 are arranged on both sides of the drawer slots 11. Stoppers 21 are arranged at both ends of the guide rails 2. A slidable slider 3 is arranged on the guide rails 2 and is fixedly connected to the drawer unit 12. The slider 3 is provided with two telescopic ejector rods 4. A spring 31 is arranged in the slider 3 and abuts against the ejector rods 4, so that the ejector rods 4 protrude from one side of the slider 3. A contact block 5 is arranged between the ejector rods 4 and faces the stopper 21 in the direction in which the drawer unit 12 is pulled out. When the drawer unit 12 is pulled out, the fast-moving drawer unit 12 drives the slider 3 to move together. When the linkage block abuts against the stopper 21, the ejector rods 4 retract into the through holes 32. The spring 31 is squeezed by the ejector rods 4, so that the pitch of the spring 31 decreases and absorbs the impact energy. Until the linkage block abuts against the groove 34, after the bearing part 41 abuts against the limiting part 81, the spring 31 absorbs most of the impact force, thereby reducing the impact force of the slider 3 on the stopper 21 and ensuring the connection stability between the stopper 21 and the guide rail 2. Moreover, the spring 31 also prevents the devices in the drawer unit 12 from being violently impacted, thereby ensuring the stability of the devices in the drawer unit 12;

[0025] It is worth mentioning that a plurality of balls 6 are arranged between the slider 3 and the guide rail 2. The slider 3 and the guide rail 2 are provided with chutes 7 for the balls 6 to roll. The balls 6 reduce the friction between the slider 3 and the guide rail 2, making the drawer unit 12 smooth to push and pull;

[0026] It is worth mentioning that the slider 3 is provided with a through hole 32 for the ejector rod 4 to expand and contract. One end of the through hole 32 is provided with a blind hole 33, and the other ends of the two through holes 32 are provided with grooves 34 for accommodating the abutting blocks 5. The through hole 32 provides a guiding function for the ejector rod 4, and the blind hole 33 provides an accommodating space for the spring 31. The two abutting blocks 5 are fixedly connected to the ejector rod 4, so that the abutting blocks 5 can instantaneously abut against the stopper 21, and the spring 31 is simultaneously compressed by the ejector rod 4, ensuring that the spring 31 can absorb the buffer force to the greatest extent;

[0027] It is worth mentioning that the ejector rod 4 is provided with a pressure-bearing part 41 and is slidably arranged in the blind hole 33. The pressure-bearing part 41 bears the elastic force of the spring 31 and increases the contact area with the spring 31;

[0028] It is worth mentioning that the end face of the blind hole 33 is provided with a support column 8. The support column 8 is provided with a limiting part 81 and maintains a distance for the linkage block to enter the groove 34 between the support column 8 and the pressure-bearing part 41. The support column 8 provides a support point for the spring 31. The support column 8 is fixedly connected to the blind hole 33 by screws. The limiting part 81 limits the excessive compression of the spring 31 by the pressure-bearing part 41, playing a role in protecting the spring 31;

[0029] It is worth mentioning that the spring 31 is arranged on the outer wall of the limiting part 81 and abuts against the pressure-bearing part 41. The spring 31 absorbs the impact force through its expansion and contraction function, thereby playing a buffering function.

[0030] Through the above design scheme, the product can achieve the advantage of buffering function.

[0031] The above content further elaborates on the present utility model in combination with specific embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope determined by the claims submitted for the present utility model.

Claims

1. A low-voltage draw-out switchgear cabinet, comprising a cabinet body (1), wherein a plurality of drawer slots (11) are arranged in the cabinet body (1) from top to bottom, and a push-pullable drawer unit (12) is arranged in the drawer slots (11), and is characterized in that: Guide rails (2) are provided on both sides of the drawer groove (11), and blocks (21) are provided at both ends of the guide rails (2). The guide rails (2) are provided with a slidable slider (3) and are connected and fixed to the drawer unit (12). The slider (3) is provided with two retractable top rods (4). A spring (31) is provided inside the slider (3) and abuts against the top rod (4) so that the top rod (4) protrudes from one side of the slider (3). Abutment blocks (5) are provided between the top rods (4) and face the block (21) in the direction in which the drawer unit (12) is pulled out.

2. The low-voltage draw-out switchgear according to claim 1, characterized in that: A plurality of balls (6) are arranged between the slider (3) and the guide rail (2), and the slider (3) and the guide rail (2) are provided with sliding grooves (7) for the balls (6) to roll.

3. The low-voltage draw-out switchgear according to claim 2, wherein: The slide block (3) is provided with a through hole (32) for the extension and retraction of the push rod (4), one end of the through hole (32) is provided with a blind hole (33), and the other ends of the two through holes (32) are provided with a groove (34) for accommodating the abutment block (5).

4. The low-voltage draw-out switchgear according to claim 3, characterized in that: The push rod (4) is provided with a pressure-bearing portion (41) and is slidably arranged in the blind hole (33).

5. The low-voltage draw-out switchgear according to claim 4, characterized in that: A support column (8) is provided on the end surface of the blind hole (33), and the support column (8) is provided with a limiting portion (81) and maintains a spacing with the pressure-bearing portion (41) for the linkage block to enter the groove (34).

6. The low-voltage draw-out switchgear according to claim 5, wherein: The spring (31) is arranged on the outer wall of the limiting portion (81) and abuts against the pressure-bearing portion (41).

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