An anti-seismic and anti-loosening structure for a switchgear cabinet

Abstract

The present invention discloses an anti-seismic and anti-loosening structure for a switch cabinet, which relates to the technical field of switch cabinets. The key points of its technical solution include two groups of mounting plates arranged on both sides of the lower end of the mounting frame and having bolt holes at both ends; mounting bolts threadedly connected to the bolt holes for passing through and fixing between the mounting plates and the vertical rods; a self-locking mechanism arranged between the oppositely placed mounting bolts; when the mounting bolts rotate and loosen from the mounting plates, the self-locking mechanism resists the rotation of the mounting bolts and tightly clamps the vertical rods. The structure of this switch cabinet can, through the cooperation between the self-locking mechanism and the mounting bolts, when the mounting bolts loosen during high-frequency vibration, use the self-locking mechanism to hinder the rotation of the mounting bolts so that they cannot completely disengage from the mounting plates. At the same time, the supporting component can tightly support between the vertical rods when the mounting bolts rotate and loosen, making up for the decrease in the mounting strength of the mounting frame caused by the loosening of the mounting bolts and ensuring the stability of the overall operation.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinets, and particularly relates to an anti-seismic and anti-loosening structure for switch cabinets. Background Art

[0002] Switch cabinets are responsible for distributing, controlling, and protecting electrical equipment to ensure the safety and stability of power supply. With the rapid development of modern industrial technology, the requirements for the reliability and safety of power equipment are increasing day by day. Especially in areas with frequent earthquakes or in occasions with strict requirements for operating stability, since switch cabinets are assembled using prefabricated components, the internal mounting frames and vertical rods are assembled by bolt connections. When affected by high-frequency vibrations, the bolts will gradually loosen and detach from the frame, resulting in unstable installation of internal components and affecting the normal operation of the switch cabinet.

[0003] In view of this, a design or technical improvement is proposed to solve the above problems.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the above deficiencies and provide an anti-seismic and anti-loosening structure for switch cabinets.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An anti-seismic and anti-loosening structure for a switch cabinet includes a cabinet body, a vertical rod arranged in the cabinet body, and a mounting frame mounted on the vertical rod. It further includes two sets of mounting plates arranged at both sides of the lower end of the mounting frame and having bolt holes at both ends; mounting bolts threadedly connected to the bolt holes for passing through and fixing between the mounting plates and the vertical rod; a self-locking mechanism arranged between the oppositely placed mounting bolts; when the mounting bolts rotate and loosen from the mounting plates, the self-locking mechanism resists the rotation of the mounting bolts and tightly clamps the vertical rod.

[0008] Further, the self-locking mechanism includes a bearing frame arranged at the lower end of the mounting frame, a transmission component rotatably arranged on both sides of the bearing frame, and a supporting component arranged on the transmission component.

[0009] Further, the transmission component includes a threaded rod rotatably arranged on the bearing frame and a connecting sleeve arranged at the end of the threaded rod away from the bearing frame; the mounting bolt is provided with a hexagonal bolt head, and the bolt head is further provided with a convex cap having a hexagonal shape but a diameter smaller than that of the bolt head. The side of the connecting sleeve close to the mounting bolt is provided with a hexagonal sunk groove adapted to the convex cap.

[0010] Furthermore, a circular hole for sliding and inserting the threaded rod is opened at one end of the connecting sleeve close to the threaded rod, key plates are evenly arranged on the inner wall of the circular hole, and key grooves matching the key plates are evenly arranged on the outer surface of one end of the threaded rod close to the connecting sleeve.

[0011] Furthermore, a fixing ring is arranged on the threaded rod, and a push spring with one end arranged on the connecting sleeve and the other end arranged on the fixing ring is sleeved on the outer surface of the threaded rod.

[0012] Furthermore, the support assembly includes a sleeve block threadedly connected to the threaded rod, a connecting rod arranged on the sleeve block, and a push slider arranged at the end of the connecting rod away from the sleeve block; a limiting groove for the push slider to limit its sliding movement is provided on the mounting plate, and a rubber block is provided on the side of the push slider away from the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the present solution are as follows: the switch cabinet structure can utilize the self-locking mechanism to hinder the rotation of the mounting bolts when the mounting bolts are loosened during high-frequency vibrations through the cooperation between the self-locking mechanism and the mounting bolts, and limit the mounting bolts after they are rotated to a certain extent so that they cannot be completely detached from the mounting plate. At the same time, the self-locking mechanism can transmit the rotation of the mounting bolts to the support assembly through the transmission assembly, and the support assembly can tighten the vertical rods when the mounting bolts are loosened, thereby compensating for the decrease in the installation strength of the mounting frame caused by the loosening of the mounting bolts and ensuring the stability of the overall operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0015] Figure 1 It is a front perspective schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the cooperation between the mounting frame and the self-locking mechanism in the present invention;

[0017] Figure 3 It is a structural schematic diagram of the mounting frame in the present invention;

[0018] Figure 4 It is a structural schematic diagram of the self-locking mechanism in the present invention;

[0019] Figure 5 It is a schematic diagram of the structural disassembly of the transmission assembly in the present invention;

[0020] Figure 6 It is a front three-dimensional schematic diagram of the connecting sleeve in the present invention;

[0021] Figure 7It is a rear three-dimensional schematic diagram of the connecting sleeve in the present invention;

[0022] Figure 8 It is a structural schematic diagram of the threaded rod in the present invention;

[0023] Figure 9 It is a sectional three-dimensional schematic diagram of the transmission component in the present invention.

[0024] In the figure: 1, cabinet body; 11, vertical rod; 12, mounting rack; 2, mounting plate; 21, bolt hole; 22, mounting bolt; 23, bolt head; 24, convex cap; 3, bearing bracket; 31, threaded rod; 32, connecting sleeve; 33, hexagonal sunk groove; 34, round hole; 35, key plate; 36, key groove; 4, fixing ring; 41, pushing spring; 5, sleeve block; 51, connecting rod; 52, pushing slider; 53, limiting sliding groove; 54, rubber block. Specific embodiments

[0025] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] As Figures 1-9 shown, a seismic and anti-loosening structure for a switch cabinet includes a cabinet body 1, a vertical rod 11 arranged inside the cabinet body 1, and a mounting rack 12 mounted on the vertical rod 11. It also includes two groups of mounting plates 2 arranged on both sides of the lower end of the mounting rack 12 and having bolt holes 21 at both ends; mounting bolts 22 threadedly connected to the bolt holes 21 for passing through and fixing between the mounting plate 2 and the vertical rod 11; a self-locking mechanism arranged between the oppositely placed mounting bolts 22; when the mounting bolts 22 rotate and become loose from the mounting plate 2, the self-locking mechanism resists the rotation of the mounting bolts 22 and tightly clamps the vertical rod 11. Since the switch cabinet is often affected by high-frequency vibrations in earthquake-prone areas, and the installation of the mounting rack 12 inside the cabinet body 1 and the vertical rod 11 is realized by the cooperation of the mounting bolts 22. Under the influence of high-frequency vibrations, the mounting bolts 22 will gradually rotate and become loose, resulting in a decrease in the fixing effect of the mounting rack 12, and further causing the electrical components mounted on the mounting rack 12 to become unstable. Therefore, through the setting of the self-locking mechanism, it can automatically prevent the rotation of the mounting bolts 22 when the mounting bolts 22 rotate and become loose, and gradually tighten the vertical rod 11 during the rotation and loosening process of the mounting bolts 22, thereby additionally providing a supporting force for the mounting rack 12 to make up for the decrease in the fixing effect caused by the loosening of the mounting bolts 22, so as to maintain the high stability of the mounting rack 12.

[0027] In one embodiment, the self-locking mechanism includes a bearing bracket 3 provided at the lower end of the mounting bracket 12, a transmission assembly rotatably provided on both sides of the bearing bracket 3, and a supporting assembly provided on the transmission assembly. The transmission assembly includes a threaded rod 31 rotatably provided on the bearing bracket 3 and a connecting sleeve 32 provided at one end of the threaded rod 31 away from the bearing bracket 3. The mounting bolt 22 is provided with a hexagonal bolt head 23, and the bolt head 23 is further provided with a convex cap 24 having a hexagonal shape but a diameter smaller than that of the bolt head 23. A hexagonal counterbore 33 adapted to the convex cap 24 is provided on one side of the connecting sleeve 32 close to the mounting bolt 22. When the mounting bracket 12 is mounted on the vertical rod 11, first, the mounting bolt 22 is inserted through the bolt hole 21 on the mounting plate 2, and then turned to the vertical rod 11 to fix the mounting bracket 12. When the fixing is completed, at this time, the hexagonal counterbore 33 on the connecting sleeve 32 is docked with the convex cap 24, so that it forms a structure that rotates integrally with the threaded rod 31. Thus, when the mounting bolt 22 rotates and loosens, the threaded rod 31 will first prevent the rotation of the mounting bolt 22, achieving the preliminary effect of maintaining its stable installation.

[0028] In one embodiment, a circular hole 34 for the threaded rod 31 to slide and insert is provided at one end of the connecting sleeve 32 close to the threaded rod 31. Key plates 35 are uniformly arranged on the inner wall of the circular hole 34, and key grooves 36 adapted to the key plates 35 are uniformly provided on the outer surface of one end of the threaded rod 31 close to the connecting sleeve 32. A fixing ring 4 is provided on the threaded rod 31, and a pushing spring 41 with one end provided on the connecting sleeve 32 and the other end provided on the fixing ring 4 is sleeved on the outer surface of the threaded rod 31. After the connecting sleeve 32 is docked with the convex cap 24, the connecting sleeve 32 is supported by the pushing spring 41, so that it is stable on the mounting bolt 22 and will not become loose. At the same time, through the setting of the key groove 36, and then in cooperation with the engagement between the key plate 35 on the connecting sleeve 32 and the key groove 36, the connecting sleeve 32 is limited to slide on the threaded rod 31 and has a certain sliding range limit. When the mounting bolt 22 rotates and loosens, it will drive the connecting sleeve 32 to rotate synchronously. At the same time, the mounting bolt 22 will push the connecting sleeve 32 to slide in the key groove 36 until it abuts against one end of the key groove 36. At this time, the mounting bolt 22 has not reached the degree of detachment from the vertical rod 11, and is limited and locked by the connecting sleeve 32 at this degree, so that it has a minimum degree of loosening, ensuring that the mounting bolt 22 will not become loose from the vertical rod 11. At the same time, leaving a certain rotation and loosening range for the mounting bolt 22 can also buffer the torque of the pushing spring 41 to prevent the rotation of the mounting bolt 22, avoiding the occurrence of structural damage caused by direct rigid confrontation.

[0029] In one embodiment, the supporting component includes a sleeve block 5 threadedly connected to the threaded rod 31, a connecting rod 51 disposed on the sleeve block 5, and a pushing slider 52 disposed at one end of the connecting rod 51 away from the sleeve block 5; a limiting sliding groove 53 for the limiting sliding of the pushing slider 52 is formed on the mounting plate 2, and a rubber block 54 is disposed on one side of the pushing slider 52 away from the connecting rod 51. When the mounting bolt 22 rotates to drive the connecting sleeve 32 to rotate, the connecting sleeve 32 drives the threaded rod 31 to rotate synchronously through the engagement of the key plate 35 and the key groove 36. Then, the sleeve block 5 is driven to move toward the mounting plate 2 thereon. Next, the sleeve block 5 drives the pushing slider 52 to slide in the limiting sliding groove 53 through the connecting rod 51, and gradually pushes the rubber block 54 disposed at its upper end to tightly press against the outer surface of the vertical rod 11, thereby strengthening the connection between the mounting bracket 12 and the vertical rod 11, ensuring the stable state of the mounting bracket 12. At the same time, the rubber block 54 can also form a buffer node between the mounting bracket 12 and the vertical rod 11, reducing the vibration energy transmitted from the vertical rod 11 to the mounting bracket 12, and further enhancing the operating stability of the components mounted at the upper end of the mounting bracket 12.

[0030] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A switch cabinet with an anti-seismic and anti-loosening structure, comprising a cabinet body (1), a vertical rod (11) arranged in the cabinet body (1), and a mounting frame (12) mounted on the vertical rod (11), characterized in that: include: Two groups of mounting plates (2) are arranged on both sides of the lower end of the mounting frame (12) and have bolt holes (21) at both ends; A mounting bolt (22) threadedly connected to the bolt hole (21) for threading and fixing the mounting plate (2) and the vertical rod (11); A self-locking mechanism disposed between mounting bolts (22) disposed opposite to each other; When the mounting bolt (22) is rotated and loosened from the mounting plate (2), the self-locking mechanism resists the rotation of the mounting bolt (22) and clamps the vertical rod (11); The self-locking mechanism comprises a bearing frame (3) arranged at the lower end of the mounting frame (12), a transmission assembly rotatably arranged on both sides of the bearing frame (3), and a supporting assembly arranged on the transmission assembly; The transmission assembly comprises a threaded rod (31) rotatably arranged on the bearing frame (3) and a connecting sleeve (32) arranged at an end of the threaded rod (31) away from the bearing frame (3); The mounting bolt (22) is provided with a hexagonal bolt head (23), the bolt head (23) is also provided with a hexagonal convex cap (24) with a smaller diameter than the bolt head (23), and the connecting sleeve (32) is provided with a hexagonal recessed groove (33) adapted to the convex cap (24) on one side close to the mounting bolt (22); The support assembly comprises a sleeve block (5) threadedly connected to the threaded rod (31), a connecting rod (51) arranged on the sleeve block (5), and a push slider (52) arranged at an end of the connecting rod (51) away from the sleeve block (5); The mounting plate (2) is provided with a limiting sliding groove (53) for limiting the sliding movement of the push slider (52), and a rubber block (54) is provided on the side of the push slider (52) away from the connecting rod (51).

2. The anti-vibration and anti-loosening structure for switch cabinet according to claim 1, characterized in that: A circular hole (34) for sliding and inserting the threaded rod (31) is formed at one end of the connecting sleeve (32) close to the threaded rod (31), and key plates (35) are evenly arranged on the inner wall of the circular hole (34), and key grooves (36) adapted to the key plates (35) are evenly arranged on the outer surface of one end of the threaded rod (31) close to the connecting sleeve (32).

3. The anti-vibration and anti-loosening structure for switch cabinet according to claim 2, characterized in that: A fixing ring (4) is arranged on the threaded rod (31), and a push spring (41) with one end arranged on the connecting sleeve (32) and the other end arranged on the fixing ring (4) is sleeved on the outer surface of the threaded rod (31).

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