Telescopic safety ladder stand for foundation pit

Abstract

The utility model relates to the technical field of anchoring and shotcreting reverse construction small foundation pit safety, and particularly discloses a telescopic foundation pit safety crawling ladder which comprises a telescopic crawling ladder body, a wall hanging part, a protection cage and a supporting part. The top end of the telescopic ladder stand main body is fixedly connected with the wall hanging component, so that the telescopic ladder stand main body is hung on a top beam at the top of a foundation pit; one side of the telescopic ladder stand main body is fixedly connected with the protective cage; one end of the supporting part is fixedly connected with the other side of the telescopic ladder stand main body, and the other end is attached to a wall support. The length of the ladder cage is adjusted layer by layer along with the depth of a foundation pit, the ladder cage does not need to be fixedly installed on a wall, and due to the scalability, the size is greatly reduced, and turnover is convenient. The ladder cage of the foundation pit crawling ladder can be rapidly installed, the length can be gradually adjusted along with the depth of the foundation pit, the installation time of a conventional ladder cage is shortened, the size of the ladder cage can be reduced due to the flexibility of the ladder cage, turnover use is facilitated, and the construction cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to anchor spray reverse construction small -size foundation pit safety technical field, concretely relates to a telescopic foundation pit safety ladder stand. BACKGROUND

[0002] The existing small -size foundation pit up -and -down mode adopts the shaped cage, is fixed on the foundation pit wall through the welding or bolt connection of the foundation pit wall embedded part. The shaped cage is installed gradually with the anchor spray foundation pit depth layer by layer deepening, to ensure that the construction personnel go in and out safely. The traditional construction method needs to be embedded in the foundation pit wall and is time -consuming and labor -intensive in circulation due to the large volume.

[0003] For example: the patent for a safety ladder stand device for a deep foundation pit and a construction method with the publication number CN118375380A proposes a ladder stand suitable for a foundation pit, which is similar to a wall -hanging type in structure, but the top and side wall components need to be fixed in advance in actual application, especially the side wall component needs to be embedded, and the telescopic extension adopts a hanging splicing method. Compared with the floor -type shaped cage, this structure is long in installation time, high in installation requirement, difficult to disassemble and low in safety in actual use. In addition, the existing ladder stand cage is composed of an arc guard rod and a horizontal connecting rod, wherein the horizontal connecting rod is arranged in parallel with the ladder stand crossbeam, and the arc guard rod is connected with the horizontal connecting rod. Although this arrangement can increase stability and structural strength to a certain extent, it also significantly increases weight, space occupation, cost and installation complexity, and is not suitable for portable use.

[0004] Therefore, the technical personnel in the art urgently need to propose a new safety ladder stand suitable for a foundation pit to improve the technical problems existing in the above -mentioned traditional technology. UTILITY MODEL CONTENT

[0005] Therefore, the utility model wants to solve the technical problem in the prior art, that is, to overcome the defects in the prior art, and to provide a telescopic foundation pit safety ladder stand.

[0006] A telescopic foundation pit safety ladder stand, comprising: a telescopic ladder stand body, a wall -hanging part, a cage and a support part.

[0007] The top end of the telescopic ladder stand body is fixedly connected with the wall -hanging part, so that the telescopic ladder stand body is hung on the top crown beam of the foundation pit.

[0008] One side of the telescopic ladder stand body is fixedly connected with the cage.

[0009] One end of the support part is fixedly connected with the other side of the telescopic ladder stand body, and the other end is in close contact with the wall support.

[0010] Preferably, the telescopic ladder stand body comprises a pair of telescopic trunks and a plurality of ladder crossbeams.

[0011] The plurality of telescopic ladder columns are sequentially sleeved and connected by buckles to form the telescopic main body;

[0012] The pair of telescopic main bodies are connected by the ladder rungs;

[0013] The number of the ladder rungs is matched with the number of the telescopic ladder columns; each ladder rung is fixedly connected with the end of the telescopic ladder column at the corresponding installation position.

[0014] Preferably, the protective cage comprises arc-shaped protective rods, fixed connectors and safety belts;

[0015] The number of the arc-shaped protective rods, the number of the fixed connectors and the number of the safety belts are matched with each other.

[0016] The two ends of the arc-shaped protective rod at the top of the protective cage are fixedly connected with the telescopic ladder column by the fixed connectors, and the two ends of the remaining arc-shaped protective rods are fixedly connected with the connection positions of the ladder rungs and the telescopic ladder column by the fixed connectors.

[0017] Moreover, the adjacent two arc-shaped protective rods are fixedly connected by the safety belts to form a chain-shaped grid soft structure.

[0018] Preferably, the wall-hanging component comprises two identical wall-hanging structures.

[0019] The two wall-hanging structures are fixedly connected with the top ends of the two telescopic main bodies, respectively.

[0020] The wall-hanging structure comprises a vertical rod, a first-level horizontal rod and a second-level horizontal rod.

[0021] The vertical rod and the telescopic ladder main body are fixedly connected by the first-level horizontal rod and the second-level horizontal rod from top to bottom.

[0022] The length of the vertical rod is matched with the height of the crown beam at the top of the foundation pit.

[0023] Preferably, the telescopic ladder column is in a cylindrical structure and is provided with four installation surfaces.

[0024] The installation surfaces of the wall-hanging structure on the telescopic ladder column and the installation surfaces of the ladder rungs are arranged in parallel.

[0025] The installation surfaces of the protective cage on the telescopic ladder column and the installation surfaces of the supporting component are arranged in parallel.

[0026] Preferably, the telescopic ladder main body is made of aluminum alloy.

[0027] The protective cage is made of aluminum alloy.

[0028] Preferably, the bottom of the arc-shaped protective rod and the bottom of the ladder rung are both provided with elastic washers.

[0029] Preferably, the telescopic ladder body is further provided with a bottom end support rod;

[0030] The bottom end support rod is connected with the second ladder cross beam of the telescopic ladder body from bottom to top.

[0031] Preferably, the support part is provided with a friction protection part at the wall support fitting part.

[0032] The technical scheme of the utility model has the following advantages:

[0033] 1. The utility model adopts the length adjustment of the ladder cage layer by layer with the foundation pit depth, and does not need to be fixed and installed with the wall, and due to the telescopic property, the volume is greatly reduced, and the turnover is facilitated.

[0034] 2. The foundation pit ladder cage installation can be quickly carried out, and the length can be adjusted with the foundation pit depth gradually, the installation time of the conventional ladder cage is reduced, and the telescopic property can reduce the volume of the utility model, facilitate the turnover use, and reduce the construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the specific embodiment or prior art of the utility model, the drawings needed to be used in the specific embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and for ordinary skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0036] Fig. 1 It is the front view of the utility model;

[0037] Fig. 2 It is the top view of the utility model;

[0038] Fig. 3 It is the side view of the utility model.

[0039] EXPLANATION OF REFERENCE NUMERALS:

[0040] 1-1- telescopic trunk;1-2- ladder cross beam;2-1- arc-shaped guard rod;2-2- fixed connecting piece;2-3- safety belt;3-1- vertical rod;3-2- first level cross bar;3-3- second level cross bar;4- support part;5- bottom end support rod;6- friction protection part. DETAILED DESCRIPTION

[0041] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0042] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0045] Embodiment 1

[0046] As Figs. 1-3 A telescopic foundation pit safety ladder is disclosed in this embodiment, comprising: a telescopic ladder body, a wall hanging part, a protective cage and a support part 4;

[0047] The top end of the telescopic ladder body is fixedly connected with the wall hanging part, so that the telescopic ladder body is hung on the top crown beam of the foundation pit;

[0048] One side of the telescopic ladder body is fixedly connected with the protective cage;

[0049] One end of the support part 4 is fixedly connected with the other side of the telescopic ladder body, and the other end is in close contact with the wall support, so as to ensure the stability of the overall structure of the telescopic foundation pit safety ladder.

[0050] Specifically:

[0051] The telescopic ladder body comprises a pair of telescopic stems 1-1 and a plurality of ladder beams 1-2;

[0052] The plurality of telescopic ladder columns are sequentially sleeved and connected by buckles to form the telescopic stem 1-1.

[0053] The pair of oppositely arranged telescopic stems 1-1 are connected by the ladder beams 1-2.

[0054] The number of the ladder beams 1-2 and the number of the telescopic ladder columns are matched; each ladder beam 1-2 is fixedly connected with the end of the telescopic ladder column at the corresponding installation position.

[0055] As an improved embodiment, the protective cage comprises arc-shaped protective rods 2-1, fixed connectors 2-2 and safety belts 2-3.

[0056] The number of the arc-shaped protective rods 2-1, the number of the fixed connectors 2-2 and the number of the safety belts 2-3 are matched with each other.

[0057] The two ends of the arc-shaped protective rod 2-1 at the top of the protective cage are fixedly connected with the telescopic ladder column through the fixed connector 2-2.

[0058] The fixed connector is a square structure and is matched with the telescopic ladder column and the arc-shaped protective rod structure; the two ends of the remaining arc-shaped protective rod 2-1 are fixedly connected with the connection between the ladder beam 1-2 and the telescopic ladder column through the fixed connector 2-2, which avoids affecting the telescopic function of the ladder as a whole and overcomes the increase in the overall device width while maintaining stability.

[0059] Moreover, the adjacent two arc-shaped protective rods 2-1 are fixedly connected by a plurality of safety belts 2-3 to form a chain type mesh soft structure.

[0060] As Figs. 2-3 In this embodiment, the wall-hanging part comprises two completely same wall-hanging structures.

[0061] The two wall-hanging structures are fixedly connected with the top ends of the two telescopic stems 1-1, respectively.

[0062] The wall-hanging structure comprises a vertical rod 3-1, a first level cross rod 3-2 and a second level cross rod 3-3.

[0063] The vertical rod 3-1 and the telescopic ladder body are fixedly connected in sequence from top to bottom through the first level cross rod 3-2 and the second level cross rod 3-3.

[0064] The length of the vertical rod 3-1 is matched with the height of the crown beam at the top of the foundation pit; the length of the vertical rod 3-1 is 0.7 m.

[0065] In actual application, the second level cross rod 3-3 and the vertical rod 3-1 are matched and clamped at the crown beam at the top of the foundation pit.

[0066] The telescopic ladder column in the embodiment is of a cylindrical structure and is provided with four mounting surfaces;

[0067] The mounting surfaces of the wall-hanging structure on the telescopic ladder column and the mounting surfaces of the climbing ladder crossbeam 1-2 are arranged in parallel;

[0068] The mounting surfaces of the protective cage on the telescopic ladder column and the mounting surfaces of the supporting part 4 are arranged in parallel.

[0069] As an improved embodiment, the telescopic climbing ladder body is made of aluminum alloy material; the protective cage is made of aluminum alloy material. The wall-hanging structure is made of steel material, and the first-stage crossbar 3-2 and the vertical bar 3-1 are matched as the climbing ladder handrail.

[0070] As an improved embodiment, the telescopic climbing ladder body is made of resin fiber material. The protective cage is made of resin fiber material.

[0071] The bottom of the arc-shaped protective rod 2-1 and the bottom of the climbing ladder crossbeam 1-2 are provided with elastic washers to protect the climbing ladder crossbeam and the arc-shaped protective rod during recycling. In the embodiment, the arc-shaped protective rod adopts a grid structure.

[0072] In the embodiment, the telescopic climbing ladder body is further provided with a bottom-end supporting rod 5, which protects the telescopic ladder column at the bottom end during actual use and forms a triangular stable structure with the bottom-end supporting rod 5, the telescopic ladder column and the bottom surface during recycling, facilitating recycling and supporting placement.

[0073] The bottom-end supporting rod 5 is hingedly connected to the second climbing ladder crossbeam 1-2 from bottom to top of the telescopic climbing ladder body.

[0074] The supporting part 4 is provided with a friction protection part 6 at the wall support adhesion position.

[0075] Specific implementation steps:

[0076] Step one, fix the telescopic foundation pit safety climbing ladder on the top beam of the foundation pit by using the wall-hanging structures on both sides;

[0077] Step two, adjust the length of the ladder cage to the bottom of the excavation surface by the telescopic climbing ladder body;

[0078] Step three, adjust the length of the ladder cage step by step as the foundation pit is excavated layer by layer, and keep the bottom-end supporting rod 5 of the bottom of the telescopic foundation pit safety climbing ladder in support with the ground;

[0079] Step four, the construction personnel use the telescopic foundation pit safety climbing ladder to move up and down the foundation pit;

[0080] Step five, after the completion of the foundation pit, fold up the telescopic foundation pit safety climbing ladder on the ground, and then turn to the next foundation pit after being shrunk to the smallest.

[0081] Obviously, the above embodiments are only examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated. The changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A telescopic safety ladder for foundation pits, characterized in that, include: Telescopic ladder body, wall hanging components, cage and support components (4); The top of the telescopic ladder body is fixedly connected to the wall-mounting component so that the telescopic ladder body is hung on the top cap beam of the foundation pit; One side of the telescopic ladder is fixedly connected to the safety cage. One end of the support component (4) is fixedly connected to the other side of the telescopic ladder body, and the other end is attached to the wall support.

2. The telescopic pit safety ladder according to claim 1, characterized in that, The telescopic ladder body includes: a pair of telescopic main trunks (1-1) and multiple ladder crossbeams (1-2); Multiple telescopic ladder columns are connected in sequence and formed by snap-fit ​​connections to form a telescopic main structure (1-1). A pair of oppositely arranged telescopic main trunks (1-1) are connected by a ladder beam (1-2); The number of ladder beams (1-2) is matched with the number of telescopic ladder columns; each ladder beam (1-2) is fixedly connected to the end of the telescopic ladder column at the corresponding installation position.

3. The telescopic pit safety ladder according to claim 2, characterized in that, The cage includes an arc-shaped guardrail (2-1), a fixing connector (2-2), and a safety belt (2-3); The number of curved guardrails (2-1), the number of fixed connectors (2-2), and the number of safety belts (2-3) are matched with each other; The two ends of the arc-shaped guardrail (2-1) at the top of the cage are fixedly connected to the telescopic ladder column through the fixed connector (2-2), and the two ends of the remaining arc-shaped guardrail (2-1) are fixedly connected to the connection between the climbing ladder beam (1-2) and the telescopic ladder column through the fixed connector (2-2); Furthermore, two adjacent arc-shaped guardrails (2-1) are fixedly connected by multiple safety belts (2-3) to form a chain-like soft structure.

4. The telescopic pit safety ladder according to claim 3, characterized in that, The wall-mounting component includes two identical wall-mounting structures; The two wall-mounted structures are fixedly connected to the top ends of the two telescopic main trunks (1-1), respectively; The wall-mounted structure includes vertical bars (3-1), first-level horizontal bars (3-2), and second-level horizontal bars (3-3). The vertical bar (3-1) and the main body of the telescopic ladder are fixedly connected from top to bottom through the first-level horizontal bar (3-2) and the second-level horizontal bar (3-3); The length of the vertical rod (3-1) is adapted to the height of the capping beam at the top of the foundation pit.

5. The telescopic pit safety ladder according to claim 4, characterized in that, The telescopic ladder column has a cylindrical structure and four mounting surfaces; The mounting surface of the wall-mounted structure on the telescopic ladder column and the mounting surface of the ladder crossbeam (1-2) are arranged parallel to each other; The mounting surface of the protective cage on the telescopic ladder column and the mounting surface of the support component (4) are arranged in parallel.

6. The telescopic pit safety ladder according to claim 5, characterized in that, The main body of the telescopic ladder is made of aluminum alloy. The cage is made of aluminum alloy.

7. The telescopic pit safety ladder according to claim 6, characterized in that, Both the bottom of the arc-shaped guardrail (2-1) and the bottom of the ladder beam (1-2) are provided with elastic pads.

8. The telescopic pit safety ladder according to claim 7, characterized in that, The telescopic ladder body is also provided with a bottom support rod (5). The bottom support rod (5) is connected to the second ladder crossbeam (1-2) from bottom to top of the telescopic ladder body.

9. The telescopic pit safety ladder according to claim 8, characterized in that, The support component (4) is provided with a friction protection component (6) at the contact point between it and the wall support.

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