Box-type substation inspection protection device

Abstract

The utility model discloses a box-type substation inspection protection device, which comprises a manhole cover, a manhole frame, manhole cover flanges and sliding columns, the manhole cover is split and is composed of two symmetrical square cover plates, each cover plate is provided with a left side edge and a right side edge, and the left side edge and the right side edge are provided with sliding grooves for guiding when the manhole cover is opened and closed. Sliding columns are fixed to the left inner side and the right inner side of the manhole frame, the cover plate is connected with the sliding columns in a sliding mode through sliding grooves, flanges are arranged in the centers of the left side and the right side of the manhole frame, the sliding columns are arranged near the two sides of the flanges, and the cover plate can be pulled into the manhole in a sliding mode by opening the cover plate. The space required for opening the manhole and placing the cover plate is reduced, and accidents such as crashing injury and bumping injury possibly occurring when the cover plate is carried are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of box-type substations, in particular to a box-type substation inspection and protection device. Background Art

[0002] At present, in order to prevent water and small animals from entering the foundation, some box-type substations will arrange a manhole inside the box-type substation, and enter the foundation from the box-type substation to perform wiring inspection and other operations. In order to allow people to enter smoothly, the size of the inspection manhole opening is generally made into 500x600 (mm) and equipped with a cover. In order to save costs, box-type substation manufacturers usually extremely compress the area inside the box-type substation, and the manhole is basically surrounded by walls or cabinets, etc., without any spare space. Figure 4 The following is a common inspection manhole cover structure. This structure has the following shortcomings:

[0003] 1. Manhole covers are mostly made of folded steel plates, weighing 10 to 15 kg. They are relatively heavy and large in size, making them very inconvenient for one person to carry.

[0004] 2. The space around the manhole is small, and it is difficult to find a suitable position to place the manhole cover when it is opened. It often stands above the wellhead, occupying part of the wellhead area, resulting in a very small actual manhole area. People entering and exiting the manhole need to twist their bodies to avoid the manhole cover, which is both inconvenient and dangerous.

[0005] 3. Most manhole covers are made of folded steel plates, and their upper corners are vertical sharp corners. It is very easy to damage the paint surface of the wall of the box-type transformer during transportation, causing corrosion of the box; or injuring maintenance personnel. Summary of the invention

[0006] In order to solve the above problems, the utility model provides a box-type substation inspection and protection device, which has a reasonable structural design and is convenient and safe to operate.

[0007] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is:

[0008] A box-type substation inspection and protection device comprises a manhole cover, a manhole frame, a manhole cover retaining edge, and a sliding column. The manhole cover is a double-open type, and is composed of two symmetrical square cover plates. The cover plate is provided with left and right side edges, and the left and right side edges are provided with sliding grooves for guiding when opening and closing. Sliding columns are fixed on the left and right inner sides of the manhole frame, and the cover plate is slidably connected to the sliding column through the sliding groove. Retaining edges are provided at the central parts of the left and right sides of the manhole frame, and the sliding columns are provided near the two sides of the retaining edges.

[0009] Furthermore, the manhole cover is formed by folding a steel plate and is provided with left and right folding edges, and the folding edges are provided with strip hole-shaped sliding grooves.

[0010] The slide groove includes a guide bar hole and a support bar hole connected to each other. The guide bar hole is a long oblong hole, and the support bar hole is a short oblong hole. The upper and lower widths of the guide bar hole are larger than the outer diameter of the slide column and smaller than the upper and lower widths of the support bar hole. The support bar hole is close to the rear end of the cover plate, and the lower end of the support bar hole is open to facilitate the separation of the cover plate from the slide column.

[0011] The sliding column includes an energy storage welding stud, a sliding sleeve, and a nut. The energy storage welding stud is welded on the inner side of the manhole frame, and the sliding sleeve is placed on the energy storage welding stud and fixed on the energy storage welding stud by a nut. The diameter of the nut should be slightly larger than the diameter of the sliding sleeve and larger than the width of the sliding groove so that it will not fall out of the sliding groove on the manhole cover. The sliding sleeve can be made of ordinary steel or wear-resistant material and can be replaced at any time.

[0012] Furthermore, the width of the opening at the lower end of the support bar hole is larger than the diameter of the stud and smaller than the outer diameter of the nut, and after the two cover plates are aligned in place, the sliding column is on one side of the support bar hole, and the opening at the lower end of the support bar hole is arranged on the other side of the support bar hole. This structure ensures that when the operator lifts the cover plate by the handle, the cover plate will not directly detach from the opening of the support bar hole.

[0013] The distance from the retaining edge to the upper edge of the manhole frame is consistent with the thickness of the cover plate.

[0014] Furthermore, a handle is provided on the front upper plate surface of the manhole cover near the central part of the manhole frame for the convenience of operation by the operator. The cover can slide through the sliding groove and the sliding sleeve. The manhole cover can be opened to extend into the foundation, leaving only a small part of the cover above the manhole frame.

[0015] The beneficial effects of the utility model are as follows: the utility model has a reasonable structure and is easy to process and produce; it saves the internal space of the box body; when opening the manhole cover for inspection, there is no need to lift the entire cover plate and carry it to another place, only one side needs to be lifted so that it can slide naturally along the slide groove on the folded edge and extend into the foundation, which saves effort in operation and does not occupy the internal space of the box transformer; the cover plate is hung on both sides and will not interfere with the entry and exit of personnel; it does not need to be carried as a whole, thus avoiding bumps and injuries to personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the side view of the structure of the manhole cover of the utility model;

[0017] Figure 2 This is a schematic diagram of the manhole cover of the utility model in an open state;

[0018] Figure 3 This is a schematic diagram of the closed state of the manhole cover of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the manhole cover inside the original box-type transformer;

[0020] Figure 5 This is a close-up view of the folding chute of the manhole cover of the utility model;

[0021] Figure 6 It is a schematic diagram of the sliding column structure of the frame of the manhole of the utility model.

[0022] As shown in the figure, 1-cover plate, 2-box transformer bottom plate, 3-manhole frame, 4-retaining edge, 5-sliding column, 6-manhole cover, 5-sliding column, 6-sliding groove, 7-folding leaf, 8-handle, 9-manhole cover, 52-sliding sleeve, 53-nut, 61-guide bar hole, 62-support bar hole, 63-opening. DETAILED DESCRIPTION

[0023] The utility model is described in detail with reference to the accompanying drawings.

[0024] like Figure 4 The figure shows a conventional manhole cover structure, which includes a manhole cover 9, which is in active contact with the retaining edge 4 in the manhole frame 3, while the present case has been optimized and improved.

[0025] When the manhole cover structure is in the closed state, Figure 3 As shown, when it is turned on, Figure 2 As shown, the manhole frame 3 is not a structure specially designed and processed by the present utility model, and any manhole on the bottom plate 2 of the box transformer has this square structure; the energy storage welding studs 51 and nuts 53 are universal standard parts.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 The structure of a box-type substation inspection and protection device is shown, which includes a manhole cover, a manhole frame 3, a manhole cover retaining edge 4, and a sliding column. The manhole cover is a double-open type, and is composed of two symmetrical square cover plates 1. The cover plate 1 is provided with left and right side edges, and the left and right side edges are provided with sliding grooves 6 for guiding it when opening and closing. Sliding columns 5 are fixed on the left and right inner sides of the manhole frame 3. The cover plate 1 is slidably connected to the sliding column 5 through the sliding groove 6. The retaining edge 4 is provided in the center of the left and right sides of the manhole frame 3, and the sliding column 5 is provided near both sides of the retaining edge 4.

[0027] Furthermore, the manhole cover is formed by folding a steel plate, and is provided with left and right folding edges 7 , and the folding edges 7 are provided with strip hole-shaped sliding grooves 6 .

[0028] The slide groove 6 includes a guide bar hole 61 and a support bar hole 62 connected to each other. The guide bar hole 61 is a longer oblong hole, and the support bar hole 62 is a shorter oblong hole. The upper and lower widths of the guide bar hole are larger than the outer diameter of the slide column and smaller than the upper and lower widths of the support bar hole. The support bar hole is close to the rear end of the cover plate, and an opening 63 is provided at the lower end of the support bar hole to facilitate the separation of the cover plate 1 from the slide column 5.

[0029] The sliding column 5 includes an energy storage welding stud 51, a sliding sleeve 52, and a nut 53. The energy storage welding stud is welded on the inner side of the manhole frame, and the sliding sleeve is placed on the energy storage welding stud and fixed on the energy storage welding stud by the nut. The diameter of the nut should be slightly larger than that of the sliding sleeve and larger than the width of the sliding groove so that it will not fall out of the sliding groove on the manhole cover. The sliding sleeve can be made of ordinary steel or wear-resistant material and can be replaced at any time.

[0030] Furthermore, the width of the opening at the lower end of the support bar hole 62 is greater than the diameter of the stud 51 and smaller than the outer diameter of the nut, and after the two cover plates are aligned in place, the sliding column is on one side of the support bar hole, and the opening at the lower end of the support bar hole is arranged on the other side of the support bar hole. This structure ensures that when the operator lifts the cover plate by the handle, the cover plate will not directly detach from the opening of the support bar hole.

[0031] The distance from the retaining edge 4 to the upper edge of the manhole frame 3 is consistent with the thickness of the cover plate 1 .

[0032] Furthermore, a handle 8 is provided on the upper surface of the manhole cover near the central part of the manhole frame to facilitate operation by the operator. The cover can slide through the slide groove 6 and the sliding sleeve 52. The manhole cover can be opened to extend into the foundation, leaving only a small part of the cover above the manhole frame.

[0033] During processing, the energy storage welding stud 51 can be welded at the appropriate position of the manhole frame 3, and the sliding sleeve 52 can be put on the stud 51 and fixed with a nut 53. The manhole cover folding edge 7 is provided with a slide groove 6, and the end of the slide groove 6 has an opening 63, and the sliding sleeve 52 can be directly buckled into the slide groove 6 through this opening. Since this opening is downward, the sliding sleeve will not fall out of it during normal use. When opening the manhole cover 1, you only need to lift the side with the handle 8, and the manhole cover will naturally slide to the inside of the foundation along the slide groove 6 structure by its own gravity, which saves effort in operation. When closing, just pull the manhole cover back to the original path.

[0034] The structure is easy to process, saves internal space of the box-type transformer, saves effort in operation, and reduces the risk of bruises and injuries.

[0035] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A box-type substation inspection and protection device, characterized in that: It includes a manhole cover, a manhole frame, a manhole cover retaining edge, and a sliding column. The manhole cover is a double-open type, consisting of two symmetrical square cover plates. The cover plate is provided with left and right side edges, and the left and right side edges are provided with sliding grooves for guiding it when opening and closing. Sliding columns are fixed on the left and right inner sides of the manhole frame. The cover plate is slidably connected to the sliding column through the sliding groove. Retaining edges are provided at the central parts of the left and right sides of the manhole frame, and the sliding columns are provided near the two sides of the retaining edges.

2. The box-type substation inspection and protection device according to claim 1 is characterized in that: The manhole cover is formed by folding a steel plate and is provided with left and right folding edges, and the folding edges are provided with strip hole-shaped sliding grooves.

3. The box-type substation inspection and protection device according to claim 2 is characterized in that: The slide groove includes a guide bar hole and a support bar hole connected to each other. The guide bar hole is a longer oblong hole, and the support bar hole is a shorter oblong hole. The upper and lower widths of the guide bar hole are larger than the outer diameter of the slide column and smaller than the upper and lower widths of the support bar hole. The support bar hole is close to the rear end of the cover plate, and the lower end of the support bar hole is open to facilitate the separation of the cover plate from the slide column.

4. The box-type substation inspection and protection device according to claim 1 is characterized in that: The sliding column comprises an energy storage welding stud, a sliding sleeve and a nut. The energy storage welding stud is welded on the inner side of the manhole frame. The sliding sleeve is sleeved on the energy storage welding stud and fixed on the energy storage welding stud by the nut.

5. The box-type substation inspection and protection device according to claim 4 is characterized in that: The diameter of the nut should be larger than the outer diameter of the sleeve and larger than the width of the slot.

6. The inspection and protection device for box-type substation according to claim 3 or 5, characterized in that: The width of the lower end opening of the support bar hole is larger than the diameter of the stud and smaller than the outer diameter of the nut. After the two cover plates are aligned in place, the sliding column is located on one side of the support bar hole, and the opening at the lower end of the support bar hole is set on the other side of the support bar hole.

7. The box-type substation inspection and protection device according to claim 1 is characterized in that: The distance from the retaining edge to the upper edge of the manhole frame is consistent with the thickness of the cover plate.

8. The inspection and protection device for box-type substation according to claim 2 is characterized in that: A handle is arranged on the upper plate surface at the front end of the manhole cover plate near the central part of the manhole frame.

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