Safe ladder stand device for deep foundation pit

Abstract

The safety crawling ladder device is arranged along the wall of the foundation pit and comprises embedded parts, initial crawling ladder parts and spliced crawling ladder parts, the embedded parts are arranged along the wall of the foundation pit at intervals, the tops of the initial crawling ladder parts are erected at an opening of the foundation pit, the bottoms of the initial crawling ladder parts are detachably connected with the corresponding embedded parts, and the spliced crawling ladder parts are arranged on the wall of the foundation pit. At least one spliced ladder stand part is hooked at the bottom of the initial ladder stand part, and the bottom of the spliced ladder stand part is detachably connected with the corresponding embedded part. The utility model has the beneficial effects of smaller occupied space, more convenience in operation, firmer and more reliable connection, simple structure and convenience in operation, and reduces the potential safety hazard.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, in particular to a safety climbing ladder device for a deep foundation pit. Background Art

[0002] With the development of deep foundation pit construction projects, new technologies for deep foundation pit construction continue to emerge. During deep foundation pit excavation and underground structure construction, it is necessary to provide guarantees for the safety of workers entering the foundation pit. Especially when the excavation depth of the deep foundation pit exceeds ten meters or the foundation pit is vertical and the internal space is relatively narrow, the traditional inclined step-type work ladder is complicated to make, occupies a large space, and is difficult to use due to the reduced working space. The flexible ladder made of nylon rope has poor safety and is prone to safety accidents, posing safety hazards. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a safe ladder device for deep foundation pits, which effectively solves the problems of occupying space, complex manufacturing and potential safety hazards, and overcomes the shortcomings of the prior art.

[0004] The technical solution adopted by the utility model is: a safety ladder device for deep foundation pits, arranged along the foundation pit wall, comprising:

[0005] Embedded parts are arranged at intervals along the foundation pit wall;

[0006] The top of the initial ladder part is set up at the foundation pit entrance, and the bottom is detachably connected to the corresponding embedded part. The bottom of the initial ladder part is hooked with at least one spliced ​​ladder part, and the bottom of the spliced ​​ladder part is detachably connected to the corresponding embedded part.

[0007] Furthermore, the foundation pit opening is provided with ground embedded reinforcement, and the top of the initial climbing ladder portion is connected to the ground embedded reinforcement.

[0008] Furthermore, the initial ladder portion and the spliced ​​ladder portion both include symmetrically arranged ladder columns, a plurality of parallel step rods are provided between the ladder columns, a connecting rod is provided at the bottom of the ladder columns, the connecting rod is parallel to the step rod, and both ends of the connecting rod extend out of the ladder columns and are detachably connected to the corresponding embedded parts.

[0009] Furthermore, hooking grooves are provided at both ends of the connecting rod.

[0010] Furthermore, a hook is provided at the top of the ladder column at a position relative to the hooking slot, and the hook is adapted to the hooking slot.

[0011] Furthermore, the embedded part includes an embedded rod, which is arranged in the foundation pit wall, and one end of the embedded rod extends out of the foundation pit wall and is provided with a lock, and the lock is detachably connected to the connecting rod.

[0012] Furthermore, the initial ladder section and the spliced ​​ladder section are both provided with safety cages.

[0013] Furthermore, the safety cage includes a plurality of parallelly arranged guard rings, the guard rings are arranged along the ladder posts, and both ends are connected to the ladder posts. Vertical poles are arranged on the guard rings, and the vertical poles are arranged parallel to the ladder posts.

[0014] Furthermore, a safety platform is provided on the spliced ​​ladder part.

[0015] The utility model also provides a construction method of a safety ladder device for a deep foundation pit as described above, comprising the following steps:

[0016] Pre-embedding the embedded parts during the foundation pit wall support construction;

[0017] Setting up the initial ladder section at the foundation pit entrance;

[0018] The spliced ​​ladder portion is hooked at the bottom of the initial ladder portion until it reaches the bottom of the foundation pit.

[0019] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical solution, it occupies less space, is more convenient to operate, has a more firm and reliable connection, has a simple structure, is easy to operate, and reduces safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of a safety ladder device for a deep foundation pit according to an embodiment of the utility model.

[0021] Figure 2 It is a front view of a safety ladder device for deep foundation pits according to an embodiment of the utility model.

[0022] In the figure:

[0023] 1. Initial ladder section 2. Spliced ​​ladder section 3. Ground reinforcement

[0024] 4. Ladder column 5. Step rod 6. Hooking slot

[0025] 7. Hook 8. Embedded rod 9. Lock

[0026] 10. Connecting rod 11. Guard ring 12. Vertical rod

[0027] 13. Safety platform 14. Foundation pit wall DETAILED DESCRIPTION

[0028] The embodiment of the utility model provides a safety ladder climbing device for a deep foundation pit. The embodiment of the utility model is described below in conjunction with the accompanying drawings.

[0029] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0030] like Figure 1-2 As shown, the utility model embodiment is a safety ladder device for deep foundation pits, which is arranged along the foundation pit wall 14, and includes embedded parts, an initial ladder part 1 and a spliced ​​ladder part 2. There are multiple embedded parts, which are arranged at intervals along the foundation pit wall 14 and embedded in the foundation pit wall 14. The top of the initial ladder part 1 is a horizontal section, which is erected at the foundation pit opening and fixedly connected to the foundation pit opening. A handrail is provided on the horizontal section to facilitate the staff to enter the foundation pit. A vertical section is fixedly connected to the horizontal section, which is arranged along the foundation pit wall 14, and the bottom is detachably connected to the corresponding embedded part. At least one spliced ​​ladder part 2 is hooked at the bottom of the initial ladder part 1, and the bottom of the spliced ​​ladder part 2 is detachably connected to the corresponding embedded part. The number of spliced ​​ladder parts 2 is not limited and can be set according to the depth of the foundation pit. When multiple spliced ​​ladder sections 2 are provided, the top of the spliced ​​ladder section 2 at the bottom is hooked on the bottom of the spliced ​​ladder section 2 at the top, and the bottom of each spliced ​​ladder section 2 is detachably connected to the corresponding embedded part, so that the entire safety ladder device is arranged close to the foundation pit wall 14 to save space, and is firmly installed to reduce safety hazards.

[0031] Preferably, in order to make the initial ladder part 1 more firmly installed, ground anchor bars 3 are arranged at the position of the horizontal section of the initial ladder part 1 near the foundation pit opening, and the horizontal section of the initial ladder part 1 is welded and fixed to the ground anchor bars 3. By welding to the ground anchor bars 3, the initial ladder part 1 is more firmly fixed and not easy to loosen, which is also conducive to the positioning of the entire device.

[0032] Specifically, the initial ladder section 1 and the spliced ​​ladder section 2 both include symmetrically arranged ladder columns 4, two ladder columns 4 are vertically arranged along the foundation pit wall 14, and a plurality of horizontally parallel stepping rods 5 are arranged between the ladder columns 4. The stepping rods 5 are arranged at equal intervals. A connecting rod 10 is provided at the bottom of the ladder column 4, and the connecting rod 10 is arranged parallel to the stepping rod 5. Both ends of the connecting rod 10 extend out of the ladder column 4 and are detachably connected to the corresponding embedded parts, so that the initial ladder section 1 and each spliced ​​ladder section 2 are fixedly connected to the inner wall of the foundation pit, and the connection is firm and reliable. In this embodiment, the ladder column 4, the stepping rod 5 and the connecting rod 10 are all profiles and are fixed together by welding.

[0033] Specifically, hooking grooves 6 are provided at both ends of the connecting rod 10, and the shape of the hooking grooves 6 is not limited. In this embodiment, in order to make the multiple spliced ​​ladder parts 2 aligned and connected, the hooking grooves 6 are symmetrically arranged.

[0034] Specifically, a hook 7 is provided at the top of the ladder column 4 at a position relative to the hooking groove 6, and the hook 7 is adapted to the hooking groove 6. The hook 7 at the top of the ladder column 4 of the first spliced ​​ladder section 2 is hooked in the hooking groove 6 on the connecting rod 10 of the initial ladder section 1, and the hook 7 at the top of the spliced ​​ladder section 2 at the lower part is hooked in the hooking groove 6 on the connecting rod 10 of the spliced ​​ladder section 2 at the upper part. By hooking, the initial ladder section 1 and the spliced ​​ladder section 2 are combined into a whole ladder device, and the installation method is simple and the operation is convenient.

[0035] Specifically, the embedded part includes an embedded rod 8, which is arranged in the foundation pit wall 14, and one end of the embedded rod 8 extends out of the foundation pit wall 14 and is provided with a lock buckle 9, and the lock buckle 9 is detachably connected to both ends of the connecting rod 10. In this embodiment, the embedded rod 8 is specifically configured as a steel bar, and the protruding end of the steel bar is welded with a lock buckle 9. The length of the embedded rod 8 should be long enough so that the depth of entering the foundation pit wall 14 is deep enough to ensure the stability of the lock buckle 9, so that the fixing of the connecting rod 10 is more secure, thereby ensuring the stability of the entire device.

[0036] Preferably, in order to prevent workers from slipping while climbing, safety cages are provided on both the initial ladder portion 1 and the spliced ​​ladder portion 2 .

[0037] Specifically, the safety cage includes a plurality of parallelly arranged retaining rings 11, and the shape of the retaining rings 11 is not limited, and can be arc-shaped or U-shaped. The retaining rings 11 are arranged at equal intervals along the ladder column 4, and the two ends are connected to the ladder column 4. In order to make the safety cage more secure, a plurality of vertical poles 12 are connected to the retaining rings 11, and the vertical poles 12 are arranged parallel to the ladder column 4. In this embodiment, the two ends of the retaining ring 11 are welded and fixed to the ladder column 4, and the vertical poles 12 are welded and fixed to the retaining ring 11.

[0038] When the depth of the foundation pit reaches a certain depth, usually greater than 7 meters, in order to prevent workers from climbing fatigue, a safety platform 13 is welded inside the spliced ​​ladder part 2 for temporary rest. The shape of the safety platform 13 is not limited. The number and spacing of the safety platforms 13 are not limited. In this embodiment, an arc-shaped steel plate is welded inside the spliced ​​ladder part 2 as the safety platform 13.

[0039] A construction method for a safety ladder device for a deep foundation pit comprises the following steps:

[0040] 1) First, after the foundation pit is excavated, the embedded parts are embedded while the side wall support is constructed. The installation position and number of the embedded parts are determined according to the depth of the foundation pit and the installation position of the entire device. It is necessary to ensure that the embedded rod 8 of the embedded part is long enough and the depth of entering the foundation pit wall 14 is deep enough to ensure that the lock buckle 9 is stable and reliable.

[0041] 2) Ground reinforcement 3 is set at the foundation pit opening, and the initial ladder part 1 is set at the foundation pit opening and welded to the ground reinforcement 3. The two ends of the connecting rod 10 at the bottom of the initial ladder part 1 are locked and fixed with the corresponding lock buckles 9 on the embedded rod 8.

[0042] 3) Hook the hook 7 on the top of the ladder column 4 of the first spliced ​​ladder section 2 into the hook groove 6 on the connecting rod 10 of the initial ladder section 1, and lock and fix the two ends of the connecting rod 10 at the bottom of the first spliced ​​ladder section 2 with the corresponding lock buckles 9 on the embedded rod 8. Connect and fix all the spliced ​​ladder sections 2 in the same way until the bottom of the foundation pit.

[0043] 4) When the foundation pit depth is greater than 7 meters, a safety platform 13 is welded on the inner side of the spliced ​​ladder part 2 according to needs.

[0044] The advantages and positive effects of the utility model are:

[0045] 1. By setting up a hook-type splicing structure, the length of the safety ladder can be changed according to the depth of the foundation pit. The structure is simple and the operation is convenient.

[0046] 2. By setting connecting rods and embedded parts, the entire device can be set along the foundation pit wall. Compared with the inclined step-type work ladder, it occupies less space and is more conducive to operation. The initial ladder part and each spliced ​​ladder part are fixedly connected to the foundation pit wall. The connection method is firm and reliable, reducing safety hazards.

[0047] 3. By setting ground embedded reinforcement, the initial ladder part is made more stable, which is conducive to the positioning and fixation of the entire device.

[0048] 4. The safety of operators is further guaranteed by setting up safety cages and safety platforms.

[0049] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A safety ladder device for a deep foundation pit, arranged along the wall of the foundation pit, characterized in that: include: Embedded parts are arranged at intervals along the foundation pit wall; The top of the initial ladder part is set up at the foundation pit entrance, and the bottom is detachably connected to the corresponding embedded part. The bottom of the initial ladder part is hooked with at least one spliced ​​ladder part, and the bottom of the spliced ​​ladder part is detachably connected to the corresponding embedded part.

2. A safety ladder device for deep foundation pits according to claim 1, characterized in that: The foundation pit opening is provided with ground embedded reinforcement, and the top of the initial climbing ladder portion is connected to the ground embedded reinforcement.

3. A safety ladder device for deep foundation pits according to claim 1 or 2, characterized in that: The initial ladder part and the spliced ​​ladder part both include symmetrically arranged ladder columns, a plurality of parallel step rods are arranged between the ladder columns, a connecting rod is arranged at the bottom of the ladder columns, the connecting rod is parallel to the step rod, and both ends of the connecting rod extend out of the ladder columns and are detachably connected to the corresponding embedded parts.

4. A safety ladder device for deep foundation pits according to claim 3, characterized in that: Both ends of the connecting rod are provided with hooking grooves.

5. A safety ladder device for deep foundation pits according to claim 4, characterized in that: A hook is provided at the top of the ladder column at a position relative to the hooking slot, and the hook is adapted to the hooking slot.

6. A safety ladder device for deep foundation pits according to claim 4 or 5, characterized in that: The embedded part comprises an embedded rod, which is arranged in the foundation pit wall, one end of which extends out of the foundation pit wall and is provided with a lock, and the lock is detachably connected to the connecting rod.

7. A safety ladder device for deep foundation pits according to claim 6, characterized in that: The initial ladder part and the spliced ​​ladder part are both provided with safety cages.

8. A safety ladder device for deep foundation pits according to claim 7, characterized in that: The safety cage comprises a plurality of parallelly arranged guard rings, which are arranged along the ladder column and connected to the ladder column at both ends. Vertical poles are arranged on the guard rings, and the vertical poles are arranged parallel to the ladder column.

9. A safety ladder device for deep foundation pits according to any one of claims 1-2, 4-5 and 7-8, characterized in that: A safety platform is provided on the spliced ​​ladder part.

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