Guiding device for valve mechanism of switch cabinet

Abstract

The utility model relates to a guide device of a switch cabinet valve mechanism, which comprises a guide rod which sequentially passes through an upper switch cabinet valve plate and a lower switch cabinet valve plate along the vertical direction, a centralizing bracket and a limiting bracket positioned above the centralizing bracket, the centralizing support and the limiting support are both fixedly connected with a switch cabinet partition plate, the centralizing support is provided with a first through hole matched with the guide rod, and the limiting support is provided with a limiting device for limiting the guide rod from moving upwards. According to the utility model, the upward displacement of the guide rod is limited through the limiting device, and the downward displacement of the guide rod is limited through the switch cabinet guide rail, so that the vertical positioning of the guide rod is realized, meanwhile, the arrangement of a pin hole on the guide rod is avoided, and the integrity and the structural strength of the guide rod are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinet equipment, in particular to a valve mechanism of a switch cabinet, and specifically refers to a guide device for the valve mechanism of a switch cabinet. Background Art

[0002] As a special component in the switch cabinet, the valve mechanism has a certain internal relationship with the switch cabinet and the trolley. The cooperation between them determines the performance and safety of the switch cabinet. During the trolley pushing process, if the valve is not fully opened due to too slow opening, left or right tilting, poor cooperation with the trolley push plate, deformation of parts, etc., the insulation distance between the trolley contact arm and the valve may be insufficient and discharge may occur, thus causing an accident. Therefore, the reliability of the valve mechanism must be highly valued.

[0003] The valve guide rod in the valve mechanism serves as the moving track of the valve plate. Its smoothness and firmness are directly related to the overall reliability of the valve mechanism.

[0004] The existing movable valve mechanism guide rods are mostly fixed by opening a round hole on the valve guide rod and installing a split pin. The disadvantages of this structure are: the hole on the valve guide rod affects its own strength and there is a risk of breakage and damage; the split pin is fixed and is prone to jamming over a long period of time, and the split pin is severely worn after a certain number of valve openings. If it is not repaired and replaced in time, it is easy to cause the valve guide rod to fall off, and the valve mechanism will not work, which is not good for the reliability of the switch cabinet operation; different trolley shapes are equipped with different valve mechanisms and valve mechanism guide rods, which have poor versatility and are inconvenient to install; if the split pin tip is not properly handled, it is easy to cause the tip to discharge to the high-voltage live body. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and provides a switch cabinet valve mechanism guide device, which ensures the integrity of the guide rod structure and avoids the problem of reduced operating reliability of the switch cabinet due to wear of the cotter pin.

[0006] The utility model is realized through the following technical scheme, and provides a switch cabinet valve mechanism guide device, including a guide rod vertically passing through the switch cabinet upper valve plate and the switch cabinet lower valve plate in sequence, the lower end of the guide rod is supported on the switch cabinet guide rail, and also includes a straightening bracket and a limit bracket located above the straightening bracket, the straightening bracket and the limit bracket are both fixedly connected to the switch cabinet partition, the straightening bracket is provided with a first through hole adapted to the guide rod, and the limit bracket is provided with a limit device for limiting the upward movement of the guide rod.

[0007] This solution uses the switchgear guide rail to support the guide rod, preventing the guide rod from moving downward. Through the set limit device, the upward displacement of the guide rod is avoided, thus achieving the vertical positioning of the guide rod. By setting the straightening bracket and the first through hole, the guide rod passes through the first through hole, preventing the guide rod from tilting, thereby ensuring the stability of the guide rod.

[0008] As an optimization, the limit device includes a second through hole opened on the limit bracket. The guide rod passes upward through the second through hole, and a limit nut located below the second through hole is threadedly connected to the guide rod. The aperture of the second through hole is smaller than the outer diameter of the limit nut. This optimized solution blocks the limit nut through the limit bracket to prevent the limit nut from moving upward. Since the limit nut is threadedly connected to the guide rod, the upward movement of the guide rod is restricted. Moreover, when the limit nut is tightened, the fixation of the guide rod is made more secure.

[0009] As an optimization, a locknut located below the limit nut is also threadedly connected to the guide rod. This optimized solution forms a double-nut structure by setting the locknut, which can effectively prevent the loosening of the limit nut and further improve the reliability of the fixation of the guide rod.

[0010] As an optimization, the limit device includes a limit plate fixedly arranged on the limit bracket. The limit plate extends horizontally above the guide rod, and the upper end of the guide rod abuts against the limit plate. The limit device of this optimized solution restricts the upward displacement of the guide rod through the limit plate, with a simpler structure and higher limit reliability.

[0011] As an optimization, the limit bracket includes a fixing plate extending downward from one end of the limit plate close to the switchgear partition board, and a vertical plate extending from one side edge of the fixing plate to below the limit plate. The upper edge of the vertical plate is lower than the upper edge of the fixing plate. The fixing plate is fixedly connected to the switchgear partition board by bolts, and a long hole for the bolts to pass through and extending vertically is opened on the fixing plate. The limit bracket of this optimized solution is connected to the switchgear partition board through the fixing plate, the structural strength of the limit bracket is improved through the vertical plate. By setting the upper edge of the vertical plate to be lower than the upper edge of the fixing plate, a notch is formed above the vertical plate, facilitating the bending and forming operation. By setting the long hole, it is convenient to adjust the position of the limit bracket vertically, making the installation and the limit of the guide rod more convenient.

[0012] As an optimization, at least two straightening brackets through which the same guide rod passes are provided, and they are located between the upper movable door and the lower movable door of the switchgear. This setting of the optimized solution improves the verticality of the guide rod, further avoids the deviation of the guide rod, and avoids hindering the movement of the upper movable door and the lower movable door of the switchgear, ensuring the reliability of the movement and opening of the upper and lower movable doors of the switchgear.

[0013] The beneficial effects of the utility model are as follows: the upward displacement of the guide rod is limited by the limit device, and the downward displacement of the guide rod is limited by the switch cabinet guide rail, thereby realizing the vertical positioning of the guide rod, while avoiding the opening of pin holes on the guide rod, thereby ensuring the integrity and structural strength of the guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of Embodiment 2;

[0015] Figure 2 for Figure 1 The enlarged image at point I in the middle;

[0016] Figure 3 The state diagram used for the second embodiment;

[0017] Figure 4 This is a structural diagram of Embodiment 1;

[0018] Figure 5 for Figure 4 The enlarged image at point I in the middle;

[0019] Figure 6 The state diagram for the first embodiment is shown in FIG.

[0020] Figure 7 This is a schematic diagram of the limiting bracket structure of Example 2;

[0021] Figure 8 It is a side view of the limiting bracket of the second embodiment;

[0022] Figure 9 This is a top view of the limiting bracket of Example 2;

[0023] Figure 10 It is a schematic diagram of the guide rod structure of the prior art;

[0024] Figure 11 It is a schematic diagram of the structure of the righting support;

[0025] Figure 12 This is a schematic diagram of the limiting bracket structure of Example 1;

[0026] As shown in the figure:

[0027] 1. Limit bracket, 2. Upper valve plate of switch cabinet, 3. Lower valve plate of switch cabinet, 4. Switch cabinet guide rail, 5. Straightening bracket, 6. Limit nut, 7. Anti-loosening nut, 8. Guide rod, 9. Fixed plate, 10. Long hole, 11. Horizontal plate, 12. Notch, 13. Vertical plate, 14. Second through hole, 15. Limit plate, 16. First through hole, 17. Top plate, 18. Pin hole. DETAILED DESCRIPTION

[0028] During the use of the shutter mechanism in the switchgear of the prior art, when the switchgear trolley is pushed forward on the switchgear guide rail, the pressure plates at both ends of the switchgear trolley will press the shutter scissors. The shutter scissors are pressed by the pressure plates, driving the short shutter chain and the long shutter chain to move up and down respectively. The shutter chains then drive the upper and lower shutter plates to move up and down along the guide rod of the shutter mechanism, thus realizing the opening of the shutter. The switchgear trolley enters the cabinet to achieve the cooperation between the cabinet and the trolley. When the switchgear trolley is pulled out on the switchgear guide rail, the movement is opposite to the above.

[0029] The vertical movement of the upper shutter plate and the lower shutter plate of the switchgear on the guide rod realizes the opening and closing of the switchgear shutter, ensuring the entry and exit of the switchgear trolley. As Figure 10 shown, in the existing product, a pin hole 18 is opened on the guide rod, an open pin is inserted into the pin hole 18, and the fixing of the guide rod of the shutter mechanism is realized by relying on the blocking of the open pin by the middle shutter guide rod bracket. Since the open pin will be worn and stuck during long-term use, and the setting of the pin hole destroys the structural strength of the guide rod, the opening may not be in place due to the damage or deformation of the components, posing a safety hazard.

[0030] To solve the drawbacks of fixing the guide rod by using an open pin in the prior art, the present utility model provides a guiding device for the switchgear shutter mechanism that does not require opening a pin hole and using an open pin. To clearly illustrate the technical features of this solution, the following is an elaboration of this solution through specific embodiments.

[0031] Embodiment 1

[0032] As Figures 4 to 6 shown, a guiding device for the switchgear shutter mechanism includes a guide rod 8 that sequentially passes through the upper shutter plate 2 and the lower shutter plate 3 of the switchgear vertically. The lower end of the guide rod 8 is supported on the switchgear guide rail 4. The upper shutter plate 2, the lower shutter plate 3, and the switchgear guide rail 4 are all structures of the switchgear equipment and will not be elaborated here.

[0033] To realize the straightening and upper limit of the guide rod, this embodiment further includes a straightening bracket 5 and a limit bracket 1 located above the straightening bracket. Both the straightening bracket 5 and the limit bracket 1 are fixedly connected to the switchgear partition, and the switchgear partition is also a structure of the switchgear equipment itself.

[0034] The straightening bracket 5 is provided with a first through hole 16 adapted to the guide rod 8. The guide rod passes through the first through hole. At least two straightening brackets through which the same guide rod passes are located between the upper shutter plate and the lower shutter plate of the switchgear.

[0035] The structure of the straightening bracket 5 is as Figure 11As shown in the figure, it includes a top plate 17 with the first through hole 16 opened thereon, a fixing plate 9 extending downward from one end of the top plate close to the switch cabinet partition, and a vertical plate 13 extending from one side edge of the fixing plate 9 to the lower part of the top plate. The upper edge of the vertical plate is lower than the upper edge of the fixing plate, forming a notch 12 facilitating bending operation. The fixing plate is fixedly connected to the switch cabinet partition by bolts, and a long hole 10 for the bolts to pass through and extending vertically is opened on the fixing plate.

[0036] A limiting device for restricting the upward movement of the guide rod is provided on the limiting bracket 1. The limiting device includes a limiting plate 15 fixedly arranged on the limiting bracket. The limiting plate extends horizontally above the guide rod, and the upper end of the guide rod abuts against the limiting plate.

[0037] Specifically, as Figure 12 shown in the figure, the limiting bracket 1 includes a fixing plate 9 extending downward from one end of the limiting plate close to the switch cabinet partition, and a vertical plate 13 extending from one side edge of the fixing plate 9 to the lower part of the limiting plate. The upper edge of the vertical plate is lower than the upper edge of the fixing plate. The fixing plate is fixedly connected to the switch cabinet partition by bolts, and a long hole 10 for the bolts to pass through and extending vertically is opened on the fixing plate.

[0038] The guide rod in this embodiment is processed from a full-length round steel. There is no need to open pin holes on the guide rod in the middle, which does not affect the strength of the guide rod and will not cause jamming during the movement of the shutter. The top of the guide rod is limited by the limiting plate to prevent the guide rod from moving upward, ensuring that the shutter mechanism will not slip off during the movement of the shutter. At the same time, the guide rod in this embodiment is convenient to process and can be used in combination with various handcart shapes, with strong versatility.

[0039] When this embodiment is in use, as Figure 6 shown in the figure, both ends of the upper shutter plate 2 and the lower shutter plate 3 of the switch cabinet are respectively sleeved on the left and right guide rods. The lower end of the guide rod is supported by the switch cabinet guide rail 4, the upper end of the guide rod is limited by the limiting plate, and the middle part of the guide rod is straightened by the straightening bracket, ensuring the reliability of the fixation of the guide rod and ensuring that the guide rod of the shutter mechanism will not slip off during the operation of the shutter. For the convenience of manufacturing, the straightening brackets on the left and right guide rods are symmetrically arranged, and the two limiting brackets above the left and right guide rods are also symmetrically arranged.

[0040] Embodiment Two

[0041] The difference between this embodiment and Embodiment One is that the limiting device in this embodiment includes a second through hole 14 opened on the limiting bracket. The guide rod 8 passes upward through the second through hole 14, and a limiting nut 6 located below the second through hole is threadedly connected to the guide rod. The aperture of the second through hole is smaller than the outer diameter dimension of the limiting nut. A locknut 7 is also threadedly connected to the guide rod below the limiting nut 6.

[0042] Specifically, as Figures 7 to 9 shown, the limit bracket includes a cross plate 11 provided with the second through hole, a fixing plate 9 extending downward from one end of the cross plate 11 close to the switch cabinet partition, and a vertical plate 13 extending from one side edge of the fixing plate 9 to below the cross plate. The upper edge of the vertical plate is lower than the upper edge of the fixing plate. The fixing plate is fixedly connected to the switch cabinet partition by bolts, and a long hole 10 for the bolts to pass through and extending vertically is provided on the fixing plate.

[0043] In the use of this embodiment, as Figure 3 shown, both ends of the upper movable door 2 and the lower movable door 3 of the switch cabinet are respectively sleeved on the left and right guide rods. The lower ends of the guide rods are supported by the switch cabinet guide rails 4, the upper ends of the guide rods are limited by a double-nut structure formed by a limit nut 6 and a locknut 7, and the middle parts of the guide rods are straightened by a straightening bracket, ensuring the reliability of the fixation of the guide rods and ensuring that the guide rods of the movable door mechanism will not slip off during the operation of the movable door. For the convenience of manufacturing, the straightening brackets on the left and right guide rods are symmetrically arranged, and the two limit brackets above the left and right guide rods are also symmetrically arranged.

[0044] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by or adopt the prior art, which will not be elaborated here. The above embodiments and the drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention do not depart from the purpose of the present invention and should also fall within the scope of the claims of the present invention.

Claims

1. A guiding device for a live-door mechanism of a switch cabinet, comprising a guide rod (8) sequentially passing through an upper live-door plate (2) and a lower live-door plate (3) of the switch cabinet vertically. The lower end of the guide rod (8) is supported on a switch cabinet guide rail (4), characterized in that: It further includes a straightening bracket (5) and a limiting bracket (1) located above the straightening bracket. Both the straightening bracket (5) and the limiting bracket (1) are fixedly connected to the switch cabinet partition. A first through hole adapted to the guide rod (8) is formed in the straightening bracket (5), and a limiting device for restricting the upward movement of the guide rod is provided on the limiting bracket (1). The limiting device includes a second through hole (14) formed in the limiting bracket. The guide rod (8) passes upward through the second through hole (14), and a limiting nut (6) located below the second through hole is threadedly connected to the guide rod. The aperture of the second through hole is smaller than the outer ring radial dimension of the limiting nut.

2. The guiding device of the shutter mechanism of the switch cabinet according to claim 1, characterized in that: A locknut (7) located below the limiting nut (6) is also threadedly connected to the guide rod (8).

3. The guiding device of the access door mechanism of the switch cabinet according to claim 1, characterized in that: At least two straightening brackets passed through by the same guide rod are provided and are located between the upper movable door panel and the lower movable door panel of the switch cabinet.

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