CN111749608A - A field-assembled roof maintenance ladder - Google Patents

Abstract

The invention relates to a field-assembled roof maintenance ladder, which includes a ladder section and a cage assembly arranged on the ladder section. A rest platform can be set in the middle of the ladder section, and the upper and lower ladder sections of the rest platform are arranged in a staggered manner. It includes a cage hoop and a cage rod, the cage hoop is a polygon with one side open, and each side of the cage cage hoop is fixed with a cage rod. Compared with the prior art, the ladder guard cage of the present invention is designed as a standard part, which is connected with the ladder section by bolts on site, and the cage hoop adopts a polygonal structure, which is convenient for processing and later correction.

Description

A field-assembled roof maintenance ladder

technical field

The invention relates to the technical field of roof maintenance, in particular to a field-assembled roof maintenance ladder.

Background technique

Roof maintenance steel ladders commonly used in industrial and civil buildings are generally deepened and produced according to the "15J401 Steel Ladder" Atlas (hereinafter referred to as the Atlas).

First of all, the most common surface treatment method for roof maintenance steel ladders exposed to the outdoors for a long time is galvanizing. At present, the processing technology usually adopted by steel structure factories is hot-dip galvanizing after welding and forming of ladders and cages. Due to the small thickness of the material used, local thermal deformation during the welding process and thermal deformation during the hot dip galvanizing process cannot be avoided. In the process of sending it to the galvanizing manufacturer for galvanizing, the back and forth hoisting will also cause distortion of the ladder (especially the cage part). Generally, after galvanizing, the deformation part of the ladder should be corrected by baking once, and after the galvanized surface is damaged by heating, even if it is repaired by applying silver powder paint, it still has a great influence on the appearance and anti-rust performance. When the height of the climbing ladder is large, the deformation is more obvious. Although it has been corrected in the later stage, it still cannot achieve satisfactory results. After the bumps and reverse transportation of long-distance transportation, there will be further distortion and deformation, and even the cage hoop of the cage will appear. shedding phenomenon. At the same time, the cost of transportation after the overall production is relatively high, and the economy is not strong.

Secondly, the cage hoop of the cage adopts a semi-circular form, which has higher requirements for processing accuracy, especially the correction after hot-dip galvanizing, back-and-forth transportation and hoisting caused by deformation, which is more demanding for construction site personnel. harsh. However, the rigidity of the cage pole is obviously insufficient, which makes it difficult to ensure that it is flat and vertical in actual engineering.

Furthermore, the plan of the rest platform provided by the atlas is made of angle steel and patterned steel plate, which is not the best structural structure to cause a relatively large load to the supporting body.

In addition, at present, the old atlas of "02J401 Steel Ladder", an anti-misclimbing measure for climbing ladders, provides the method of moving the lower section of the ladder, which is laborious and ineffective in actual use, while the "15J401 Steel Ladder" atlas does not provide relevant solutions. .

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a field-assembled roof maintenance ladder in order to overcome the above-mentioned defects of the prior art.

The object of the present invention can be realized through the following technical solutions:

A field-assembled roof maintenance ladder includes a ladder section and a cage assembly arranged on the ladder section, the cage assembly includes a cage hoop and a cage pole, and the cage hoop is open on one side. Polygonal, each side of the cage hoop is fixed with a cage pole, and the bottom cage door, the middle rest platform and the top platform can be set as needed.

Preferably, the cage uprights have a U-shaped section.

Preferably, the cage hoop is a hexagon whose one side is an opening.

Preferably, the cage assembly is provided with a cage support plate, the cage support plate is a triangular shape with a reinforced rib, and the cage support plate is arranged at the cage hoop at the top of the cage assembly.

Preferably, the middle rest platform of the stair section divides the stair section into upper and lower sections arranged staggered left and right.

Preferably, the rest platform is composed of an angle steel frame and a round steel rung.

Preferably, the top platform includes a top flat plate extending toward the roof, top handrails are provided on both sides of the top flat plate, and a top ladder section is provided on the side of the top handrail facing the roof.

Preferably, the cage door is composed of a hexagonal cage hoop and a round steel railing, which opens to the left or right and is provided with a lock.

Compared with the prior art, the present invention has the following advantages:

1. The ladder cage is designed as a standard part, and the site is connected with the ladder section by bolts. The cage hoop adopts a polygonal structure, which is convenient for processing and later correction.

2. The cage pole adopts U-shaped section, which increases its rigidity and ensures the straightness of the cage after the final installation.

3. The cage hoop spacing of the cage is increased to about 600mm, which not only reduces the weight of the cage, but also facilitates workers to operate when the cage is installed.

4. Triangular cage support members are set at the top and bottom ends of the cage, and the strength of the support members is strengthened by hemming, thereby ensuring the stability of the entire cage.

5. The bottom end of the cage is locked by a small safety door to prevent miscellaneous people from climbing by mistake, with low cost and easy operation.

6. The rest platform is made of angle steel and round steel, which is light and beautiful, and the amount of steel used is only about 1/3 of that of the atlas plan.

7. The top platform is assembled with two armrests and a platform. The armrest cancels the shape of the curved angle steel used in the atlas, which reduces the difficulty of factory production.

Description of drawings

Fig. 1 is the assembly structure schematic diagram of the present invention below the rest platform;

Fig. 2 is the structure schematic diagram of the rest platform of the present invention;

3 is a schematic diagram of the assembly structure of the present invention above the rest platform;

Fig. 4 is the front view of the cage assembling structure at the top in the present invention;

Figure 5 is a side view of the cage assembly structure at the top of the present invention;

6 is a front view of the cage small door assembly structure in the present invention;

7 is a side view of the cage small door assembly structure in the present invention;

8 is a top view of the cage small door assembly structure in the present invention;

Fig. 9 is the front view of the assembly structure of the rest platform in the present invention;

Figure 10 is a side view of the assembly structure of the rest platform in the present invention;

11 is a top view of the assembly structure of the rest platform in the present invention;

Figure 12 is a side view of the top platform assembly structure of the present invention under the circumstance of a parapet;

Figure 13 is a rear view of the top platform assembly structure of the present invention with a parapet.

Labels in the picture: 1. Ladder section, 2. Guard cage hoop, 3. Guard cage pole, 4. Guard cage door, 5. Guard cage support plate, 6. Rest platform, 7. Top plate, 8. Top Handrail, 9, Top section, 10, Small door connector, 11, Washer, 12, Upper section, 13, Down section, 14, Bolt, 15, Small door latch, 16, Structural nail, 17, Small Door hook, 18, small door hinge.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

Example

As shown in FIGS. 1 to 3 , the present application proposes a field-assembled roof maintenance ladder, and a standardized design is carried out for the entire ladder, including a ladder section 1 and a cage assembly disposed on the ladder section 1 . For climbing ladders with a climbing height of more than 10 meters, according to the requirements of the national standard "GB4053.1 2009", a rest platform 6 needs to be set in the middle of the ladder, which divides the entire ladder into two staggered upper and lower sections 12 and 13. part. In this embodiment, the top of the ladder section 1 is provided with a top platform. Except for the rest platform 6, the ladder is a plane component, which is easy to manufacture and transport, and the rest platform 6 can also be used as a frame for the overall packaging of the cage hoop 2, the cage door 4 and other small parts and structural connectors.

The cage assembly includes a cage hoop 2 , a cage pole 3 and a cage door 4 . The cage hoop 2 is a polygon with one side open, which meets the requirements of the national standard "GB 4053.1 2009" for the space size of the cage. In this embodiment, the cage hoop 2 is a hexagon with one side open. Each side of the cage hoop 2 is fixed with a cage pole 3 , and the connection structure is shown in Figures 4 and 5 . The installation spacing of the cage hoop 2 is about 600mm, which not only reduces the weight of the cage, but also facilitates the operation of workers when the cage is installed.

孔，适用于各种情况安装护笼笼箍2。Cage guard pole 3 is a U-shaped section, with step 1 with a distance of 300mm, the cage guard pole 3 is opened with a modulus of 300mm.

Holes, suitable for installing cage hoop 2 in various situations.

In order to ensure the stability of the entire cage, the cage assembly further includes a triangular cage support plate 5, and the beveled edge of the cage support plate 5 is strengthened by a folding process. The cage support plate 5 is arranged at the cage hoop 2 at the top of each cage assembly.

As shown in Figures 6 to 8, the bottom end of the cage assembly is provided with a cage small door 4, which is made of flat steel and round steel welded, with a small door hinge 18 welded on one side and a hole on the flat steel on the other side. It is used to hang the small door latch 15 on the ladder section 1. The middle of the cage door 4 is provided with a small door connector 10, which is used for the small door hook 17 to be clamped on the cage hoop 2 at the bottom of the cage. bolt. The small door hinge 18 and the small door latch 15 are fixed on the angle steel on both sides of the ladder section 1 with bolts 14 or structural nails 16 on site, and the direction of opening the door can be installed on site according to actual needs.

圆钢及-3扁钢这三种常用的规格，便于采购、备料。护笼笼箍2与梯段1、护笼笼箍2与护笼立杆3以及护笼支撑板5的连接均采用M10螺栓14连接。In this embodiment, the component design considers the merging of raw materials, and the ladder mainly uses L50x5 angle steel,

The three common specifications of round steel and -3 flat steel are convenient for procurement and material preparation. The connection between the cage hoop 2 and the ladder section 1, the cage cage hoop 2 and the cage vertical rod 3 and the cage support plate 5 are all connected by M10 bolts 14.

圆钢铺成。四周栏杆同样采用

圆钢，内侧栏杆设计为与梯段1的踏棍同样的300mm间距，同时兼做由平台向上攀爬的踏棍。整个休息平台6的设计考虑平台开孔位置的左右方向皆可使用，按实际工程的需要转向180°即可。As shown in Figures 9-11, the rest platform 6 is made of angle steel into a square frame, and the angle steel openings at the top and bottom ends are used to connect with the upper and lower ladder sections 13, of which the connection content of the steel column is cut out in Figure 10. The bottom of the platform adopts 70mm pitch

Round steel paved. The surrounding railings are also used

Round steel, the inner railings are designed to have the same 300mm spacing as the rungs of section 1, and also serve as rungs for climbing up from the platform. The design of the whole resting platform 6 considers that the left and right directions of the opening position of the platform can be used, and it can be turned 180° according to the needs of the actual project.

圆钢焊接而成，并在角钢上开

孔与顶端平板7及顶端梯段9用M10螺栓14连接，螺栓14连接处设有垫圈11。顶端平板7由

圆钢焊接在两根L50x5角钢中形成，两侧角钢开

孔，用于与顶端扶手8连接，而圆钢间距配合屋面锁缝板的宽度设计，使其可以连接在屋面锁缝板上。本实施例中，顶端梯段9设有两根用于与屋面连接的连杆。The top platform includes a top flat plate 7 extending toward the roof, top handrails 8 are provided on both sides of the top flat plate 7, and a top ladder section 9 is provided on the side of the top handrail 8 facing the roof. Figures 12 and 13 are schematic diagrams showing the assembly structure of the top platform with a parapet wall. In this embodiment, the top handrail 8 is made of L50x5 angle steel and

Welded from round steel and cut on angle steel

The hole is connected with the top plate 7 and the top ladder 9 by M10 bolts 14, and a washer 11 is provided at the connection of the bolts 14. The top plate 7 consists of

The round steel is welded in two L50x5 angle steels, and the angle steels on both sides are open

The hole is used to connect with the top handrail 8, and the spacing of the round steel is designed according to the width of the roof seam panel, so that it can be connected to the roof seam panel. In this embodiment, the top ladder section 9 is provided with two connecting rods for connecting with the roof.

Claims (8)

1. A field-assembled roof maintenance ladder, comprising a ladder section and a cage assembly arranged on the ladder section, the cage assembly comprising a cage hoop and a cage pole, characterized in that: the cage cage The hoop is a polygon with one side open, and each side of the cage hoop is fixed with a cage pole. 2 . A field-assembled roof maintenance ladder according to claim 1 , wherein the cage uprights are of U-shaped section. 3 . 3 . The site-assembled roof maintenance ladder according to claim 1 , wherein the cage hoop is a hexagon with one side being an opening. 4 . 4. A field-assembled roof maintenance ladder according to claim 1, wherein the cage assembly further comprises a triangular cage support plate, and the cage support plate is arranged on the top of the cage assembly. At the cage hoop. 5 . The site-assembled roof maintenance ladder according to claim 1 , wherein a rest platform is provided in the middle of the ladder section, which divides the ladder section into upper and lower sections arranged in a staggered left and right. 6 . 6 . The site-assembled roof maintenance ladder according to claim 5 , wherein the rest platform is a frame structure composed of angle steel and round steel. 7 . 7. A field-assembled roof maintenance ladder according to claim 1, wherein a top platform is provided on the top of the ladder section, and the top platform includes a top plate extending toward the roof. Top handrails are provided on both sides, and a top ladder section is provided on the side of the top handrail facing the roof. 8 . The site-assembled roof maintenance ladder according to claim 1 , wherein the cage assembly further comprises a cage door set at the bottom of the cage assembly. 9 .

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