Folding combined protective ladder stand for viaduct construction

Abstract

A folding combined type viaduct construction protection crawling ladder comprises two stand column assemblies arranged side by side and a guardrail installed between two channel steel stand columns, each stand column assembly at least comprises two channel steel column bodies, and the channel steel column bodies are hinged into a whole through hinges. The corresponding steel channel columns on the two sides are fixedly connected into a whole through a plurality of pedal transverse rods arranged at equal intervals, inserting holes are formed in the ends of the steel channel columns, U-shaped bolts are inserted between the inserting holes in the two sections of steel channel columns, the two steel channel columns are locked through the U-shaped bolts, and the two steel channel columns are connected through the pedal transverse rods. The guardrail comprises arc-shaped rods arranged side by side and connecting ribs connected between the arc-shaped rods, and the guardrail is connected with the stand column assembly in a sleeving mode. The stand columns of the ladder stand adopt a folding design, the guardrails adopt a sleeving detachable mounting structure, a folding modular ladder stand structure is formed, the length size of the ladder stand can be reduced during transportation and storage, management is convenient, meanwhile, suspension mounting can be carried out in a turnover opening mode, and the mounting difficulty and safety risk of the ladder stand can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of construction auxiliary tools, in particular to a folding combined construction protection climbing ladder for viaducts. Background Technique

[0002] Construction climbing ladders play an important role in the construction industry. They are important facilities to ensure the safety and efficient access of construction workers to high-altitude working areas. Construction climbing ladders mainly consist of vertical poles, cross braces, footrests, external hanging scaffolds, guardrails and other components. These components work together to ensure the stability and safety of the climbing ladder.

[0003] At present, the vertical poles and guardrails of the widely used climbing ladders in construction are usually of an integral welded structure, which has the advantage of low manufacturing cost. The climbing ladder disclosed in the utility model patent with the application number CN2021226023293 is of a similar structure. The defect of this kind of climbing ladder in the using process is that its integral welded structure results in a large length dimension, and there are problems of large length space occupied during transportation and storage, which is not convenient for management. Moreover, when installing the climbing ladder, a crane needs to be suspended at a high altitude for angle adjustment to install it at a predetermined position, which has safety risks. Content of the Utility Model

[0004] In order to solve the above problems, the utility model proposes a folding combined construction protection climbing ladder for viaducts.

[0005] The technical solution of the utility model is: a folding combined construction protection climbing ladder for viaducts, which includes two column components arranged side by side and a guardrail installed between two channel steel columns; each column component includes at least two channel steel column bodies, and the channel steel column bodies are hinged together by hinges. A plurality of foot cross bars arranged at equal intervals are fixedly connected between the corresponding channel steel column bodies on both sides to form a whole. The foot cross bar is threaded steel or angle iron. A circular jack is provided at the end of the channel steel column body. A U-shaped bolt is inserted between the jacks on the two channel steel column bodies to lock the two channel steel column bodies. A gasket is provided between the nut of the U-shaped bolt and the inner side surface of the channel steel column body. The guardrail includes arc-shaped bars arranged side by side and connecting ribs connected between the arc-shaped bars. The distance between the arc-shaped bars is the same. The guardrail is connected to the column component by a sleeving method.

[0006] Preferably, auxiliary channel steels are provided on the inner surface of the channel steel column body. The cross-sectional dimension of the auxiliary channel steel is smaller than that of the channel steel column body. U-shaped sleeves are provided at both ends of the arc-shaped bars in the guardrail. The U-shaped sleeves are sleeved in the two auxiliary channel steels to connect the guardrail to the channel steel column.

[0007] Preferably, a plurality of foot cross bars are connected between the auxiliary channel steels at equal intervals.

[0008] Preferably, a limiting bolt is provided at the upper end of the channel steel column body. The limiting bolt extends a certain length outside the outer side of the channel steel column body, and the end of the arc-shaped rod is supported on the limiting bolt to achieve limiting.

[0009] Preferably, an L-shaped plate is connected to the inner end of the limiting bolt. The L-shaped plate serves as a limiting support plate for the limiting bolt, and the horizontal plate of the L-shaped plate hangs on the end face of the channel steel column body.

[0010] Preferably, an arc-shaped hook body is connected to the end of the channel steel column body at the upper end of the column assembly.

[0011] Preferably, a support is provided at the outer end of the arc-shaped hook body. A square support frame is provided between the support and the vertical rod of the arc-shaped hook body. Two clamping plates are provided on the support to clamp and fix the square support frame, and a support plate is provided between the lower ends of the two square support frames.

[0012] Preferably, the length of the middle channel steel column body in the column assembly is greater than the lengths of the channel steel column bodies at its two ends, so that the two can be folded on the middle channel steel column body.

[0013] The beneficial technical effects of the present utility model are as follows: The columns of this ladder adopt a folding design, and the guardrails adopt a set of detachable installation structures, forming a folding modular ladder structure. During transportation and storage, its own length dimension can be reduced, which is convenient for management. At the same time, it can be installed by means of folding and opening for suspension, which is conducive to reducing the installation difficulty and safety risk of the ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the usage state diagram of this ladder;

[0015] Figure 2 is the three-dimensional structure schematic diagram of this ladder;

[0016] Figure 3 is Figure 2 the sectional structure schematic diagram taken along the A-A direction of

[0017] Figure 4 is Figure 2 the partial enlarged view of

[0018] Figure 5 is the three-dimensional structure schematic diagram of the guardrail of this ladder;

[0019] Figure 6 is the three-dimensional structure schematic diagram of this ladder after removing the guardrail;

[0020] Figure 7 is Figure 6 the partial enlarged view of

[0021] Figure 8 is the structure schematic diagram when the channel steel column body of this ladder is folded.

[0022] In the figure, 11 is a channel steel column, 111 is a socket, 112 is a U-shaped bolt, 02 is a guardrail, 21 is an arc rod, 22 is a connecting rib, 23 is a U-shaped sleeve, 31 is a footrest cross bar, 41 is an auxiliary channel steel, 51 is a limit bolt, 52 is an L-shaped plate, 61 is an arc hook body, 611 is a support, 62 is a square support frame, 63 is a support plate, 71 is a bridge body, and 81 is a ladder body of the climbing ladder. Specific embodiments

[0023] Example 1. Refer to the attached drawings of the specification Figure 1-2 As shown in FIGS. 7-8, a folding and combined construction protection climbing ladder for a viaduct includes two column components arranged side by side and a guardrail 02 installed between two channel steel columns. The column components at least include two sections of channel steel columns 11. The channel steel columns are hinged together by hinges. The channel steel columns 11 at both ends can be folded towards the middle to reduce their own length dimensions. A number of footrest cross bars 31 arranged at equal intervals are fixedly connected between the corresponding channel steel columns on both sides to form a whole. Anti-slip textures are provided on the footrest bars to improve the safety of construction workers stepping on them. Sockets 111 are provided at the ends of the channel steel columns 11. A U-shaped bolt 112 is inserted between the sockets on the two sections of channel steel columns. A nut and a gasket are installed at the inner end of the U-shaped bolt 112. The nut is screwed to tighten the U-shaped bolt to lock the two channel steel columns 11.

[0024] An arc hook body 61 is connected to the end of the upper channel steel column 11 in the column component. A support 611 is provided at the outer end of the arc hook body. A square support frame 62 is provided between the support and the vertical rod of the arc hook body 61. A support plate 63 is provided between the lower ends of the square support frames on both sides. The arc hook body 61 can hook the edge part of the bridge body 71 without installing the square support frame 62 to establish the connection between the climbing ladder and the bridge body 71. The connection can also be established by connecting the square support frame 62 and the support plate 63. And the latter connection method has relatively high safety and stability.

[0025] The length of the middle channel steel column 11 in the column component is greater than the lengths of the channel steel columns at both ends. The channel steel columns 11 at both ends can be folded into the middle channel steel column to avoid conflicts between the channel steel columns 11 at both ends and the middle channel steel column.

[0026] When the climbing ladder is in use, since the columns of the climbing ladder adopt a folding design and the guardrail 02 adopts a set and detachable installation structure, a folding modular climbing ladder structure is formed. The length dimension of the climbing ladder can be reduced during transportation and storage, which is convenient for management. At the same time, the hanging installation can be carried out by the way of folding and opening, which is beneficial to reducing the installation difficulty and safety risk of the climbing ladder.

[0027] Example 2. Refer to the attached drawings of the specification Figure 2-5, on the basis of the first embodiment, the guardrail 02 is designed to include arc-shaped rods 21 arranged side by side and connecting ribs 22 connected between the arc-shaped rods 21. The arc-shaped rods are connected into one body through the connecting ribs. The size of the arc-shaped rods 21 matches the size of the human body to provide effective protection for the human body. The guardrail 02 is connected to the column assembly by means of sleeving. An auxiliary channel steel 41 is provided on the inner surface of the channel steel column body 11. U-shaped sleeves 23 are provided at both ends of the arc-shaped rods 21 in the guardrail 02. The size of the chute inside the U-shaped sleeve is larger than the size of the side plate of the auxiliary channel steel 41. The U-shaped sleeves 23 are sleeved in the two auxiliary channel steels 41 to connect the guardrail 02 to the channel steel column, enabling the guardrail 02 to slide freely along the auxiliary channel steel. A number of footrest cross bars 31 are connected at equal intervals between the auxiliary channel steels 41. The footrest cross bars 31 on the auxiliary channel steels 41 and the channel steel column body 11 correspond to each other to form a stable and safe footrest structure.

[0028] As Figure 4 described, a limit bolt 51 is provided at the upper end of the channel steel column body 11. The end of the arc-shaped rod 21 is supported on the limit bolt 51 to achieve limitation, avoiding the guardrail 02 from sliding between the two auxiliary channel steels 41, so that the guardrail 02 is stably connected between the two auxiliary channel steels 41. The inner end of the limit bolt 51 is connected with an L-shaped plate 52. The transverse plate of the L-shaped plate hangs on the end face of the channel steel column body 11. The firmness of the limit bolt 51 is improved through the L-shaped plate 52, and further the support strength of the arc-shaped rod 21.

Claims

1. A foldable and combined elevated bridge construction protection ladder, characterized by: Including side by side Two column assemblies are arranged and a guardrail is installed between the two channel steel columns; the column assembly includes at least two sections of channel steel columns, the channel steel columns are hinged as a whole by hinges, the corresponding channel steel columns on both sides are fixedly connected as a whole by a number of footrest cross bars arranged at equal intervals, a socket is provided at the end of the channel steel column, a U-shaped bolt is inserted between the sockets on the two sections of the channel steel columns, the two channel steel columns are locked by the U-shaped bolt, the guardrail has arc rods arranged side by side and connecting ribs connected between the arc rods, and the guardrail is connected to the column assembly in a set manner.

2. A foldable and combined elevated bridge construction protection ladder according to claim 1, characterized in that: Auxiliary channel steels are arranged on the inner surface of the channel steel column, and U-shaped sleeves are arranged at both ends of the arc-shaped rod in the guardrail. The U-shaped sleeves are matched and fitted in the two auxiliary channel steels to connect the guardrail with the channel steel column.

3. A foldable and combined elevated bridge construction protection ladder according to claim 2, characterized in that: A plurality of footrest cross bars are connected with equal intervals between the auxiliary channel steels.

4. The foldable and combined elevated bridge construction protection ladder according to claim 2 is characterized in that: A limiting bolt is arranged at the upper end of the channel steel column, and the end of the arc rod is supported on the limiting bolt to achieve limiting.

5. The foldable and combined elevated bridge construction protection ladder according to claim 4 is characterized in that: The inner end of the limiting bolt is connected with an L-shaped plate, and the transverse plate of the L-shaped plate is hung on the end surface of the channel steel column.

6. The foldable and combined viaduct construction protection ladder according to claim 1 is characterized by: The end of the channel steel column at the upper end of the column assembly is connected with an arc-shaped hook body.

7. The foldable and combined elevated bridge construction protection ladder according to claim 6 is characterized by: A support is provided at the outer end of the arc-shaped hook body, a square support frame is provided between the support and the vertical rod of the arc-shaped hook body, and a support plate is provided between the lower ends of the square support frames on both sides.

8. The foldable and combined elevated bridge construction protection ladder according to claim 1 is characterized by: The length of the middle channel steel column in the column assembly is greater than the length of the channel steel columns at both ends thereof.

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