CN203383720U

CN203383720U - Folding ladder in buried prefabricated substation

Info

Publication number: CN203383720U
Application number: CN201320499442.6U
Authority: CN
Inventors: 张婕; 黑锦惠; 郭蔷; 顾德明; 张颖菁
Original assignee: Tianjin Sanyuan Power Equipment Manufacturing Co Ltd
Current assignee: Tianjin Sanyuan Power Equipment Manufacturing Co Ltd
Priority date: 2013-08-15
Filing date: 2013-08-15
Publication date: 2014-01-08
Anticipated expiration: 2023-08-15

Abstract

The utility model discloses a folding ladder in a buried prefabricated substation. The folding ladder comprises two folding ladder columns which are spaced and parallel to each other, wherein multiple folding ladder steps are formed between the two folding ladder columns; the upper parts of the folding ladder columns are respectively hinged to the upper part of a side wall of a buried box; the lower ends of the folding ladder columns are respectively hinged to the inner side of two ends of an opening of a folding support frame; when the folding ladder columns are inclined, the bottom of the U-shaped folding support frame is opened, and the U-shaped folding support frame is pressed against the lower end of the side wall of the buried box; when the folding support frame is folded to be attached to the folding ladder columns, the folding ladder columns are vertically attached to the side wall of the buried box. The folding ladder has the beneficial effects that the folding support frame is opened and pressed against the lower end of the side wall of the buried box during use, and when the folding ladder is not used, the folding support frame is folded to be attached to the folding ladder columns, and the folding ladder columns are vertically attached to the side wall of the buried box, so that a larger space is provided for the buried box. Moreover, due to anti-slip stripes on the folding ladder steps, the safety of the ladder is improved, the occupied space is small, and the safety performance is high.

Description

Folded ladder in a kind of buried preassembled transformer station

Technical field

The utility model relates to a kind of buried preassembled transformer station, particularly be the folded ladder in a kind of buried preassembled transformer station.

Background technology

Fig. 1 is the buried preassembled transformer station ladder structure of prior art figure; Fig. 2 is A-A sectional view in Fig. 1.

As shown in Figure 1 and Figure 2, the structure of the buried preassembled transformer station 3 of prior art comprises: buried casing 3a is provided with the due electric component (not shown) of transformer station such as transformer, high-voltage board, low-voltage cabinet in buried casing 3a; Be provided with top blind flange 3b at the top of buried casing 3a, have inlet port 3c on top blind flange 3b, from inlet port 3c, to buried casing 3a bottom surface, vertical ladder 1 be obliquely installed is installed.Operating personnel enter the rear foot from inlet port 3c and step on vertical ladder 1 and enter in buried casing 3a and carry out operation.

The structure of above-mentioned prior art vertical ladder 1 comprises: two intervals and the cleat stanchion 5 be parallel to each other; Between two cleat stanchions 5, vertical and interval is welded with many steps 4; Vertical ladder 1 be obliquely installed is weldingly fixed in buried casing 3a on metal embedded part by connector 2.

There is following defect in the buried preassembled transformer station 3 of above-mentioned prior art: because cleat stanchion 5 and many steps 4 are to be welded and fixed and to be connected by hollow steel pipe, many step 4 cross sections are cylindrical, when operating personnel trample step 4, sole and step 4 contact surfaces are little, operating personnel's landing risk often occurs, have potential safety hazard; Vertical ladder 1 be obliquely installed takes up room greatly, dwindles the usage space of this hard up buried casing; Cleat stanchion has served as again handrail simultaneously, very inconvenient in use procedure.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and a kind of light safety is provided, and takes up room little, the armed interior folded ladder of a kind of buried preassembled transformer station of using safety.

The technical scheme solved the problems of the technologies described above is: the folded ladder in a kind of buried preassembled transformer station, described folded ladder comprises: two intervals and the folding cleat stanchion be parallel to each other, be provided with many folding steps perpendicular and that interval is fixing between two folding cleat stanchions, described two folding cleat stanchion tops are hinged on respectively buried wall box top; Two folding cleat stanchion lower ends are hinged on respectively inboard, U font folding support frame opening two ends; When folding cleat stanchion tilts its lower buried box house of end in contact ground, U font folding support frame is opened its bottom and is withstood on buried wall box lower end; While being attached on folding cleat stanchion after folding support frame is folding, folding cleat stanchion vertically abuts on buried wall box.

Optimal technical scheme is: the structure of described two folding cleat stanchion upper articulations on buried wall box top comprises: pre-buried installing plate, junction plate; Described pre-buried installing plate one side fixedly is embedded in the inboard on buried wall box top, and its opposite side protrudes outside buried wall box and uses and connects the end that bearing pin is hinged on junction plate, and the other end of junction plate is weldingly fixed on the folding cleat stanchion outside.

Optimal technical scheme is: the structure that described two folding cleat stanchion lower ends are hinged on inboard, U font folding support frame opening two ends is: the lower bearing pin that connects runs through and is hinged in the through hole on folding cleat stanchion and folding support frame.

Optimal technical scheme is: buried wall box is closed in side of described two folding cleat stanchions, fixedly approach respectively U font handrail on two folding cleat stanchion another sides, approach the upper end that U font handrail opening one end is welded on two folding cleat stanchions, the other end that approaches U font handrail opening is welded on the bottom of two folding cleat stanchion another sides.

Optimal technical scheme is: the cross section of described folding step is square tube, and the surface of folding step has the anti-skidding striped of sawtooth pattern.

The utility model beneficial effect is: the utility model overcomes the defect of prior art, the utility model ladder is foldable structure, during use, folding support frame is opened and is withstood on buried wall box lower end, while not using, after folding support frame is folding, be attached on folding cleat stanchion, folding cleat stanchion vertically abuts on buried wall box, for buried casing provides greater room; Anti-skidding striped on folding step has improved the security performance of ladder; Overall structure adopts high-strength aluminum alloy material light and firm, is convenient to fold, and takes up room little, and security performance is high, has discharged larger space to this hard up underground box.

The accompanying drawing explanation

Fig. 1 is the buried preassembled transformer station ladder structure of prior art figure;

Fig. 2 is A-A sectional view in Fig. 1;

Fig. 3 is the utility model structural representation;

Fig. 4 is B-B sectional view in Fig. 3;

Fig. 5 is C-C sectional view in Fig. 4;

Fig. 6 is D-D sectional view in Fig. 4;

Fig. 7 is the utility model ladder folded state diagram.

" sequence number explanation in accompanying drawing "

1: vertical ladder; 2: connector; 3: buried preassembled transformer station; 3a: buried casing; 3b: top blind flange; 3c: inlet port; 4: step; 5: cleat stanchion; 6: folded ladder; 7: folding step: 8: folding cleat stanchion; 9: handrail 10: folding support frame 11: pre-buried installing plate 12: junction plate 13: above connect bearing pin 14: the lower bearing pin that connects.

The specific embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.

Fig. 1 is the buried preassembled transformer station ladder structure of prior art figure; Fig. 2 is A-A sectional view in Fig. 1; Fig. 3 is the utility model structural representation; Fig. 4 is B-B sectional view in Fig. 3; Fig. 5 is C-C sectional view in Fig. 4; Fig. 6 is D-D sectional view in Fig. 4; Fig. 7 is the utility model ladder folded state diagram.

At first it should be noted that, when the parts in the utility model are same as the content of prior art, use identical sequence number.

The utility model discloses the folded ladder in a kind of buried preassembled transformer station, and described folded ladder comprises: two intervals and the folding cleat stanchion 8 be parallel to each other are provided with many folding steps 7 perpendicular and that interval is fixing between two folding cleat stanchions 8.

Described two folding cleat stanchion 8 tops are hinged on respectively buried casing 3a side wall upper part; Two folding cleat stanchion 8 lower ends are hinged on respectively U font folding support frame 10 inboards, opening two ends; When folding cleat stanchion 8 tilts its lower buried casing 3a of end in contact internal ground, U font folding support frame 10 is opened its bottom and is withstood on buried casing 3a side wall lower ends; While being attached on folding cleat stanchion 8 after folding support frame 10 is folding, folding cleat stanchion 8 vertically abuts on buried casing 3a sidewall.

As shown in Figure 5, described two folding cleat stanchion 8 upper articulations comprise in the structure of buried casing 3a side wall upper part: pre-buried installing plate 11, junction plate 12; Described pre-buried installing plate 11 1 sides fixedly are embedded in the inboard of buried casing 3a side wall upper part, its opposite side protrudes outside buried casing 3a sidewall and uses and connects the end that bearing pin 13 is hinged on junction plate 12, and the other end of junction plate 12 is weldingly fixed on folding cleat stanchion 8 outsides.

As shown in Figure 6, the structure that described two folding cleat stanchion 8 lower ends are hinged on U font folding support frame 10 inboards, opening two ends is: the lower bearing pin 14 that connects runs through and is hinged in the through hole on folding cleat stanchion 8 and folding support frame 10.

Buried casing 3a sidewall is closed in 8 one sides of described two folding cleat stanchions, fixedly approach respectively U font handrail 9 on two folding cleat stanchion 8 another sides, approach the upper end that U font handrail 9 opening one ends are welded on two folding cleat stanchions 8, the other end that approaches U font handrail 9 openings is welded on the bottom of two folding cleat stanchion 8 another sides.

The cross section of described folding step 7 is square tube, and the surface of folding step 7 has the anti-skidding striped of sawtooth pattern.

Folded ladder integral body of the present utility model can be adopted as high-strength aluminum alloy material and support.

Claims

1. the folded ladder in a buried preassembled transformer station, described folded ladder comprises: two intervals and the folding cleat stanchion (8) be parallel to each other, be provided with many folding steps (7) perpendicular and that interval is fixing between two folding cleat stanchions (8), it is characterized in that, described two folding cleat stanchions (8) top is hinged on respectively buried casing (3a) side wall upper part; Two folding cleat stanchions (8) lower end is hinged on respectively inboard, U font folding support frame (10) opening two ends; When folding cleat stanchion (8) tilts its lower buried casing of end in contact (3a) internal ground, U font folding support frame (10) is opened its bottom and is withstood on buried casing (3a) side wall lower ends; While being attached on folding cleat stanchion (8) after folding support frame (10) is folding, folding cleat stanchion (8) vertically abuts on buried casing (3a) sidewall.

2. according to the folded ladder in a kind of buried preassembled transformer station described in claim 1, it is characterized in that, described two folding cleat stanchions (8) upper articulation comprises in the structure of buried casing (3a) side wall upper part: pre-buried installing plate (11), junction plate (12); Described pre-buried installing plate (11) one sides fixedly are embedded in the inboard of buried casing (3a) side wall upper part, its opposite side protrudes outside buried casing (3a) sidewall and uses and connects the end that bearing pin (13) is hinged on junction plate (12), and the other end of junction plate (12) is weldingly fixed on folding cleat stanchion (8) outside.

3. according to the folded ladder in a kind of buried preassembled transformer station described in claim 1, it is characterized in that, the structure that described two folding cleat stanchions (8) lower end is hinged on inboard, U font folding support frame (10) opening two ends is: the lower bearing pin (14) that connects runs through and is hinged in the through hole on folding cleat stanchion (8) and folding support frame (10).

4. according to the folded ladder in a kind of buried preassembled transformer station described in claim 1, it is characterized in that, buried casing (3a) sidewall is closed in (8) sides of described two folding cleat stanchions, two folding cleat stanchions (8) fixedly approach respectively U font handrail (9) on another side, approach the upper end that U font handrail (9) opening one end is welded on two folding cleat stanchions (8), the other end that approaches U font handrail (9) opening is welded on the bottom of two folding cleat stanchions (8) another side.

5. according to the folded ladder in a kind of buried preassembled transformer station described in claim 1, it is characterized in that, the cross section of described folding step (7) is square tube, and the surface of folding step (7) has the anti-skidding striped of sawtooth pattern.