A pull-out type low-voltage switch cabinet with a self-locking structure

Abstract

The utility model relates to low -voltage switchgear technical field discloses a kind of self-locking structure's pull-out type functional low-voltage switchgear, including cabinet, the side of cabinet is equipped with multiple groups of installation slot, multiple installation slot are all provided with pull-out box, dry assembly is provided in the pull-out box;Through the cooperation between pull-out box, buffer mechanism and limiting component, through limiting mechanism, it is convenient to pull-out box to be pulled out cabinet after positioning fixed part, improve the stability of maintenance inspection after pull-out box opens, and fixed part resets limiting component when resetting, so that pull-out box is stored in installation slot under the action of tension spring, piston on connecting rod can compress the air in positioning cylinder simultaneously, and then make air slowly discharge through air hole, can avoid the greater impact force generated by pull-out box rapid resetting, improve the protection effect to pull-out box, to improve the service life of pull-out type functional low-voltage cabinet.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, specifically a withdrawable functional low-voltage switchgear with a self-locking structure. Background Technology

[0002] With the continuous development of society and the continuous progress of science, the use of low-voltage withdrawable switchgear is becoming more and more widespread. Low-voltage switchgear is suitable for power plants, petroleum, chemical, metallurgy, textile, high-rise buildings and other industries for power transmission, distribution and power conversion. Traditional low-voltage withdrawable switchgear is inconvenient to self-lock during use, so a low-voltage withdrawable switchgear with self-locking function is needed.

[0003] In the prior art, Chinese utility model application number CN202123150245.7 discloses a low-voltage withdrawable switchgear with a self-locking function, including a switchgear body, a pull-out box, and a handle. The pull-out box is located inside the switchgear body, with a handle at the front end and a self-locking structure at the top. An air outlet is located on one side of the switchgear body, a moisture-proof structure is located at the rear end of the pull-out box, and a heat dissipation structure is located on one side of the switchgear body. The self-locking structure includes a mounting block, a sliding groove, a telescopic spring, a locking block, a locking slot, a fixing plate, and a tension spring. This utility model, by incorporating a self-locking structure, addresses the issue of traditional switchgear bodies not being able to automatically lock the pull-out box after use. The use of the mounting block, telescopic spring, locking slot, and tension spring enables automatic locking of the pull-out box, thereby improving practicality.

[0004] Although the above technical solution can achieve the self-locking function, it is difficult to precisely adjust the reset speed and force in actual use. If the reset speed is too fast, the pull-out box may generate a large impact force when returning to its original position, which may not only damage the internal components of the pull-out box, but also cause the collision between the locking block and the slot to be too violent, accelerating wear and even affecting the normal operation of the self-locking structure. Therefore, we need to propose a pull-out functional low-voltage switchgear with a self-locking structure. Utility Model Content

[0005] The purpose of this utility model is to provide a pull-out functional low-voltage switchgear with a self-locking structure. By setting a buffer structure inside the cabinet, the pull-out box can be prevented from resetting too quickly, thereby avoiding large impacts that could damage parts. It also facilitates self-locking of the pulled-out box, making maintenance easier and preventing the pull-out box from resetting during maintenance, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pull-out functional low-voltage switchgear with a self-locking structure, comprising a cabinet body, wherein multiple sets of mounting slots are provided on one side of the cabinet body, each set of mounting slots is provided with a pull-out box, the pull-out box is provided with a drying component, and a tension spring is provided on one side of the inner cavity of the cabinet body and is fixedly connected to the pull-out box.

[0007] The pull-out box mainly consists of a box body, side panels, and fasteners. The side panels are fixedly connected to one side of the box body, and the fasteners are installed in the middle of the lower surface of the box body. Buffer mechanisms are installed at both ends of one side of the side panels, and a positioning component for limiting the position of the fasteners is provided at the bottom of the mounting groove.

[0008] The buffer mechanism includes two sets of connecting rods and two sets of positioning cylinders. The two sets of positioning cylinders are fixedly connected to one side of the inner cavity of the cabinet. One end of each of the two sets of connecting rods is inserted into the inner cavity of the two sets of positioning cylinders. A piston is fixedly connected to one end of each of the two sets of connecting rods located inside the positioning cylinder. An air hole communicating with the inner cavity of the positioning cylinder is opened on the outside of the positioning cylinder.

[0009] Preferably, the fixing component includes a fixing plate fixedly connected to the lower surface of the box body, the fixing plate has an installation chamber in its inner cavity, a push rod is slidably disposed in the installation chamber, one end of the push rod passes through the fixing plate and is fixedly connected to a button, both sides of the fixing plate have slots for the limiting component to engage, and a first return spring that abuts against the push rod is disposed in the installation chamber.

[0010] Preferably, the limiting component includes a bottom groove formed at the bottom of the mounting groove, and storage grooves are formed at both ends of the inner cavity of the bottom groove. A second reset spring is provided in the storage groove, and a locking block that slides in the storage groove is provided at one end of the second reset spring.

[0011] Preferably, the inner cavity of the mounting groove is provided with side grooves on both sides for mounting the positioning cylinder, and the length of the connecting rod is greater than the length of the box body.

[0012] Preferably, the drying assembly includes a mounting frame fixedly connected to one side of the inner cavity of the box, and a desiccant is disposed inside the mounting frame.

[0013] Preferably, multiple sets of air inlets and multiple sets of heat dissipation holes are opened at both ends of both sides of the cabinet, and a heat dissipation fan is provided on one side of the inner cavity of the cabinet.

[0014] Preferably, a handle is provided on the side of the side plate opposite to the two sets of connecting rods, the axis of the connecting rod and the axis of the positioning cylinder are arranged on the same straight line, and the end of the positioning cylinder for the connecting rod to be inserted is open.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model mainly utilizes the cooperation between the pull-out box, the buffer mechanism, and the limiting component. The limiting mechanism facilitates the positioning of the fixing component after the pull-out box is pulled out of the cabinet, improving the stability of maintenance and inspection after the pull-out box is opened. When resetting, the fixing component resets the limiting component, allowing the pull-out box to be stored in the mounting slot under the action of the tension spring. At the same time, the piston on the connecting rod compresses the air in the positioning cylinder, which is then slowly discharged through the air hole. This avoids the large impact force generated by the rapid resetting of the pull-out box, improving the protection effect of the pull-out box and thus extending the service life of the pull-out functional low-voltage cabinet. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cabinet structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the pull-out box structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the buffer mechanism structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the fastener structure of this utility model.

[0022] In the diagram: 1. Cabinet; 2. Pull-out box; 21. Box body; 22. Side panel; 23. Fixing component; 231. Fixing plate; 232. Mounting chamber; 233. Slot; 234. First return spring; 235. Push rod; 236. Button; 24. Handle; 3. Buffer mechanism; 31. Positioning cylinder; 32. Air vent; 33. Connecting rod; 34. Piston; 4. Tension spring; 5. Cooling fan; 6. Mounting slot; 7. Side slot; 8. Bottom slot; 9. Storage slot; 10. Second return spring; 11. Locking block; 12. Heat dissipation hole; 13. Mounting frame; 14. Desiccant; 15. Air inlet. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5, the utility model provides a technical solution: a draw - out functional low - voltage switchgear with a self - locking structure, including a cabinet body 1. A plurality of installation grooves 6 are opened on one side of the cabinet body 1. A draw - out box 2 is arranged in each of the plurality of installation grooves 6. A drying component is arranged in the draw - out box 2. A tension spring 4 fixedly connected to the draw - out box 2 is arranged on one side of the inner cavity of the cabinet body 1;

[0025] The draw - out box 2 is mainly composed of a box body 21, side plates 22 and a fixing member 23. The side plates 22 are fixedly connected to one side of the box body 21. The fixing member 23 is installed in the middle of the lower surface of the box body 21. Buffer mechanisms 3 are installed at both ends of one side of the side plates 22. A positioning component for limiting the fixing member 23 is arranged at the bottom of the installation groove 6;

[0026] The buffer mechanism 3 includes two groups of connecting rods 33 and two groups of positioning cylinders 31. The two groups of positioning cylinders 31 are fixedly connected to one side of the inner cavity of the cabinet body 1. One ends of the two groups of connecting rods 33 are respectively inserted into the inner cavities of the two groups of positioning cylinders 31. Pistons 34 are fixedly connected to the ends of the two groups of connecting rods 33 located inside the positioning cylinders 31. Air holes 32 communicating with the inner cavity of the positioning cylinder 31 are opened on the outer side of the positioning cylinder 31.

[0027] The fixing member 23 includes a fixing plate 231 fixedly connected to the lower surface of the box body 21. An installation chamber 232 is opened in the inner cavity of the fixing plate 231. A push rod 235 is slidably arranged in the installation chamber 232. One end of the push rod 235 penetrates through the fixing plate 231 and is fixedly connected to a button 236. Card slots 233 for the clamping of the limiting component are opened on both sides of the fixing plate 231. A first return spring 234 in contact with the push rod 235 is arranged in the installation chamber 232. The cross - section of the push rod 235 is in a dry - character shape, which is convenient for simultaneously抵触 (it should be 'contacting') the clamping blocks 11 embedded in the card slots 233, thus facilitating the release of the self - locking function and improving the moving effect of the draw - out box 2.

[0028] The limiting component includes a bottom groove 8 opened at the bottom of the installation groove 6. Receiving grooves 9 are opened at both ends of both sides of the inner cavity of the bottom groove 8. A second return spring 10 is arranged in the receiving groove 9. A clamping block 11 sliding in the receiving groove 9 is arranged at one end of the second return spring 10. The second return spring 10 is convenient for pushing the clamping block 11 into the card slot 233, thus realizing the self - locking of the draw - out box 2 after opening and closing, and improving the practicability.

[0029] Side grooves 7 for installing the positioning cylinders 31 are opened on both sides of the inner cavity of the installation groove 6. The length of the connecting rod 33 is greater than the length of the box body 21, which can prevent the connecting rod 33 from not detaching from the positioning cylinder 31 when the draw - out box 2 is pulled out of the installation groove 6 for maintenance, and is convenient for the reset of the draw - out box 2.

[0030] The drying assembly includes a mounting frame 13 fixedly connected to one side of the inner cavity of the box 21. A desiccant 14 is provided inside the mounting frame 13. The desiccant 14 can ensure the dryness inside the cabinet 1, avoid the influence of air humidity on electronic components, and the desiccant 14 is easy to replace.

[0031] Multiple sets of air inlets 15 and multiple sets of heat dissipation holes 12 are opened at both ends of the two sides of the cabinet 1. A heat dissipation fan 5 is installed on one side of the inner cavity of the cabinet 1. The heat dissipation fan 5 facilitates the airflow inside the cabinet 1, allowing outside air to enter the cabinet 1 through the air inlets 15 and exhausting the heat generated by the electronic components inside the cabinet 1 through the heat dissipation holes 12, thereby improving the overall heat dissipation effect.

[0032] A handle 24 is provided on the side plate 22 opposite to the two sets of connecting rods 33. The axis of the connecting rod 33 and the axis of the positioning cylinder 31 are on the same straight line. The end of the positioning cylinder 31 for the connecting rod 33 to be inserted is open. The handle 24 makes it easy to pull the pull-out box 2 out of the mounting slot 6, which improves the efficiency of inspection and maintenance. The open design of the positioning cylinder 31 can prevent the piston 34 from compressing the space opposite to the air hole 32, ensuring that the pull-out box 2 can be stably pulled out of the mounting slot 6.

[0033] When in use, before pulling out the pull-out box 2 from the mounting slot 6, the locking block 11 is engaged in the slot 233 to achieve self-locking of the pull-out box 2 and prevent the pull-out box 2 from disengaging from the mounting slot 6. When it is necessary to pull out the pull-out box 2 for maintenance, press the button 236 to push the push rod 235 out of the slot 233, thereby pulling the pull-out box 2 out of the mounting slot 6 through the handle 24. At the same time, the connecting rod 33 drives the piston 34 to slide in the positioning cylinder 31. When the locking block 11 near the outside of the cabinet 1 engages with the slot 233 on the fixing plate 231 away from the side plate 22, it achieves self-locking of the pulled-out pull-out box 2 and prevents the pull-out box 2 from resetting during maintenance.

[0034] After maintenance, by pressing button 236 again, push rod 235 pushes block 11 out of slot 233, and pulls pull box 2 into mounting slot 6 under the action of tension spring 4. During the resetting process of pull box 2, piston 34 on connecting rod 33 slides in positioning cylinder 31 and compresses air, so that air in positioning cylinder 31 is discharged through air hole 32, which can buffer the force generated by tension spring 4 driving pull box 2 to reset, thereby ensuring that pull box 2 can reset slowly. After fixing plate 231 is reset, block 11 is embedded into slot 233 under the action of second reset spring 10, realizing the self-locking function of pull box 2 and improving the stability of locking pull box 2.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A withdrawable functional low-voltage switchgear with a self-locking structure, comprising a cabinet (1), characterized in that: The cabinet (1) has multiple sets of mounting slots (6) on one side, and each set of mounting slots (6) is equipped with a pull-out box (2). The pull-out box (2) is equipped with a drying component. A tension spring (4) is fixedly connected to the pull-out box (2) on one side of the inner cavity of the cabinet (1). The pull-out box (2) is mainly composed of a box body (21), a side plate (22) and a fixing member (23). The side plate (22) is fixedly connected to one side of the box body (21). The fixing member (23) is installed in the middle of the lower surface of the box body (21). Buffer mechanisms (3) are installed at both ends of one side of the side plate (22). The bottom of the mounting groove (6) is provided with a positioning component for limiting the fixing member (23). The buffer mechanism (3) includes two sets of connecting rods (33) and two sets of positioning cylinders (31). The two sets of positioning cylinders (31) are fixedly connected to one side of the inner cavity of the cabinet (1). One end of the two sets of connecting rods (33) is inserted into the inner cavity of the two sets of positioning cylinders (31). The end of the two sets of connecting rods (33) located in the positioning cylinder (31) is fixedly connected to a piston (34). An air hole (32) communicating with the inner cavity of the positioning cylinder (31) is opened on the outside of the positioning cylinder (31).

2. The withdrawable functional low-voltage switchgear with a self-locking structure according to claim 1, characterized in that: The fixing component (23) includes a fixing plate (231) fixedly connected to the lower surface of the box body (21). The fixing plate (231) has an installation chamber (232) inside. A push rod (235) is slidably arranged in the installation chamber (232). One end of the push rod (235) passes through the fixing plate (231) and is fixedly connected to a button (236). Both sides of the fixing plate (231) have slots (233) for the limiting component to engage. A first return spring (234) that abuts against the push rod (235) is provided in the installation chamber (232).

3. A withdrawable functional low-voltage switchgear with a self-locking structure according to claim 2, characterized in that: The limiting component includes a bottom groove (8) at the bottom of the mounting groove (6). Both ends of the inner cavity of the bottom groove (8) are provided with storage grooves (9). A second reset spring (10) is provided in the storage groove (9). One end of the second reset spring (10) is provided with a locking block (11) that slides in the storage groove (9).

4. A withdrawable functional low-voltage switchgear with a self-locking structure according to claim 3, characterized in that: The mounting groove (6) has side grooves (7) on both sides for mounting the positioning cylinder (31), and the length of the connecting rod (33) is greater than the length of the box (21).

5. A withdrawable functional low-voltage switchgear with a self-locking structure according to claim 4, characterized in that: The drying assembly includes a mounting frame (13) fixedly connected to one side of the inner cavity of the box (21), and a desiccant (14) is disposed inside the mounting frame (13).

6. A withdrawable functional low-voltage switchgear with a self-locking structure according to claim 5, characterized in that: Multiple sets of air inlets (15) and multiple sets of heat dissipation holes (12) are opened at both ends of the cabinet (1), and a heat dissipation fan (5) is provided on one side of the inner cavity of the cabinet (1).

7. A withdrawable functional low-voltage switchgear with a self-locking structure according to claim 6, characterized in that: A handle (24) is provided on the side of the side plate (22) opposite to the two sets of connecting rods (33). The axis of the connecting rod (33) and the axis of the positioning cylinder (31) are set on the same straight line. The end of the positioning cylinder (31) for the connecting rod (33) to be inserted is open.

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