Crawling ladder for foundation pit

Abstract

The utility model discloses a crawling ladder for a foundation pit, and belongs to the technical field of building construction technologies. A crawling ladder for a foundation pit comprises a platform body and two ladder sections which are rotatably and symmetrically arranged in the vertical direction of the platform body, each ladder section is provided with two side plates, a plurality of pedals are rotatably arranged between the two side plates, rotating shafts are formed in the middles of the two ends of each pedal, and positioning assemblies corresponding to the rotating shafts are slidably arranged at the side plates. The positioning assembly is used for limiting the rotating shaft in the circumferential direction. Through cooperative arrangement of the two ladder sections, the positioning assemblies, the pedals and the rotating shafts, when the ladder is used in a shallow foundation pit, the ladder is rotated to be in a herringbone state, and the pedals are rotated to be in a state horizontal to the ground, as shown in the figure, so that the ladder can be independently used between the foundation pit and a bearing platform, the stability of the ladder is improved, and the working efficiency of the ladder is improved. And an additional channel is provided between the foundation pit and the bearing platform, so that the ladder stand can be suitable for different use scenes, and the application range of the ladder stand is widened.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a ladder for foundation pits. Background Technology

[0002] During the construction of the foundation pit cap, after the completion of the reinforcement cage binding work, the workers need to use the foundation pit slope excavation platform to transfer from the bottom of the foundation pit to the top of the cap. The excavation work is large, the silt on the edge of the foundation pit is easy to slip and the safety is poor. The installation and transfer of the ladder during the construction process is inconvenient and affects the workers' operation progress.

[0003] A folding-type excavation ladder for foundation pit construction, disclosed in publication number (CN212773639U), comprises a column vertically fixed to the foundation pit; a transfer platform supported on top of the column to provide a flat surface; a ladder segment rotatably connected to a first side, the ladder segment including multiple first steps and two first ladder walls respectively connected to both ends of the first steps; a second ladder segment rotatably connected to a second side, the second ladder segment including multiple second steps and two second ladder walls respectively connected to both ends of the second steps, the second ladder segment rotating between 0-270 degrees relative to the ladder segment; and a foundation overlapping platform rotatably connected to the third side to connect the transfer platform and the foundation. Although this ladder accommodates both foundation pit excavation and foundation construction personnel access, its usage is limited, only allowing simultaneous use for the foundation pit, foundation, and ground. When used in shallow foundation pits, it cannot be used between the foundation pit and the foundation, thus limiting its application range. Utility Model Content

[0004] This utility model provides a ladder for foundation pits, which can overcome some or all the defects of the prior art.

[0005] According to the present invention, a ladder for foundation pits includes a platform body and two ladder sections symmetrically arranged rotatably along the vertical direction of the platform body. Each ladder section has two side plates, and multiple pedals are rotatably provided between the two side plates. A rotating shaft is formed at the middle of both ends of each pedal. Positioning components corresponding to the rotating shafts are slidably provided on each side plate. The positioning components are used to limit the rotation shafts circumferentially.

[0006] By combining two ladder sections, positioning components, pedals, and a rotating shaft, this ladder can be rotated into an A-frame shape and multiple pedals rotated to a horizontal position with the ground when used in shallow foundation pits, as shown in the figure. This allows it to be used independently between the foundation pit and the foundation, improving the stability of the ladder and providing an additional passage between the foundation pit and the foundation. This makes the ladder suitable for different usage scenarios and expands its applicability.

[0007] In this embodiment, an inwardly recessed groove is formed at the rotating shaft, a spline groove is formed on the inner wall of the groove, and a threaded hole is formed on the inner wall of the spline groove; a through hole is formed at the corresponding position of the side plate and the groove; the positioning component includes a plug-in post, a through hole and a plug-in post that mates with the groove and spline groove are formed on the outer wall of the plug-in post, and an installation cavity is formed on the side of the plug-in post away from the groove; a connector that rotatably connects the plug-in post and the threaded hole is provided in the installation cavity.

[0008] With the above structure, when the pedal angle needs to be adjusted in different usage scenarios, as shown in the figure or diagram, pulling the plug outward will release the engagement with the spline groove, that is, release the circumferential limit on the pedal, thus facilitating pedal adjustment to suit different usage states. The operation is simple and quick, and the connection is stable and reliable.

[0009] In this embodiment, a fixing plate is formed at the end of the connector away from the threaded hole, and a spring is provided between the fixing plate and the inner wall of the mounting cavity. The spring is used to provide elastic force to keep the plug pin pressed in the direction of the threaded hole.

[0010] By using a spring, the connector always tends to press towards the threaded hole. When the connector is screwed into the threaded hole, it will be pulled by the spring, which will pull the plug into the groove, thus preventing the plug from loosening under vibration or external force and improving the connection stability between the plug and the spline groove.

[0011] In this embodiment, an opening communicating with the mounting cavity is formed at the plug-in post, a connecting post is detachably provided at the opening, a connecting plate is provided between adjacent connecting posts, and a handle is formed at the connecting plate.

[0012] The combination of the opening and the connecting post allows users to easily maintain or replace the positioning components.

[0013] By using the connecting column, connecting plate, and handle in a coordinated manner, the connecting column and connecting plate form a whole, allowing multiple connecting plates to be pulled quickly and simultaneously, thus improving the adjustment efficiency of the pedal.

[0014] In this embodiment, a support member is formed on the inner wall of the side plate between adjacent pedals. The support member has a first support portion that contacts the bottom wall of the pedal or a second support portion that contacts the top wall of the adjacent pedal.

[0015] The above structure ensures that the support component can always support the pedal when it is adjusted, which helps to distribute the load on the pedal and prevent it from deforming or being damaged due to long-term use or heavy load, thus improving the stability of the pedal after adjustment.

[0016] In this embodiment, a handrail is provided on the top wall of the side panel, and a railing is provided on the main body of the platform. A connecting rope is provided between the handrail and the railing.

[0017] The combination of handrails, guardrails, and connecting ropes enhances the overall safety of the ladder, providing workers with comprehensive protection.

[0018] In this embodiment, a telescopic component is detachably provided on the opposite side of the platform body and the corresponding ladder section.

[0019] By adjusting the settings of the telescopic components, the ladder sections can be used in pits of different depths and can be fixed in place, thereby enhancing the stability and safety of the entire ladder structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a ladder for foundation pits.

[0021] Figure 2 This is a schematic diagram of the frame component structure of a ladder for foundation pits.

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the support pipe and guide pipe of a ladder for foundation pits.

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of a collection trough for a ladder used in a foundation pit.

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the rotating shaft of a ladder used in foundation pits.

[0025] Figure 6 This is a schematic diagram of the handle structure of a ladder used in foundation pits. Detailed Implementation

[0026] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the utility model.

[0027] Example 1

[0028] Please see Figure 1-6 This embodiment provides a ladder for foundation pits, which includes a platform body 100 and two ladder sections 110 rotatably arranged symmetrically along the vertical direction of the platform body 100. Each ladder section 110 has two side plates 310, and a plurality of pedals 320 are rotatably provided between the two side plates 310. A rotating shaft is formed at the middle of both ends of each pedal 320. Positioning components 410 corresponding to the rotating shaft are slidably provided at each side plate 310. The positioning components 410 are used to limit the rotation shaft in the circumferential direction.

[0029] This disclosure discloses a ladder for use in excavation pits. Through the coordinated arrangement of two ladder sections 110, a positioning component 410, footboards 320, and a rotating shaft, the ladder can be rotated into an A-frame shape and the multiple footboards 320 rotated to a horizontal position with respect to the ground when used in shallow excavation pits. Figure 1 As shown, this ladder can be used independently between the foundation pit and the foundation cap, which not only improves the stability of the ladder but also provides an additional passage between the foundation pit and the foundation cap, making the ladder suitable for different usage scenarios and expanding its applicability.

[0030] In this embodiment, an inwardly recessed groove 510 is formed at the rotating shaft, a spline groove 520 is formed on the inner wall of the groove 510, and a threaded hole 530 is formed on the inner wall of the spline groove 520; a through hole is formed at the position of the side plate 310 corresponding to the groove 510; the positioning component 410 includes a plug post 540, the outer wall of the plug post 540 is formed with a through hole and the plug post 540 that mates with the groove 510 and the spline groove 520; a mounting cavity is formed on the side of the plug post 540 away from the groove 510, and a connector 560 is rotatably provided in the mounting cavity that is threaded to the plug post 540 and the threaded hole 530.

[0031] The above structure enables different usage scenarios, such as Figure 1 or Figure 2 As shown, when the angle of the pedal 320 needs to be adjusted, the plug pin 540 can be pulled outward to release the engagement with the spline groove 520, that is, to release the circumferential limit on the pedal 320, so as to facilitate the adjustment of the pedal 320 to suit different usage conditions. The operation is simple and quick, and the connection is stable and reliable.

[0032] In this embodiment, a fixing plate is formed at the end of the connector 560 away from the threaded hole 530, and a spring 570 is provided between the fixing plate and the inner wall of the mounting cavity. The spring 570 is used to provide elastic force to keep the plug pin 540 pressed in the direction of the threaded hole 530.

[0033] By using spring 570, the connector 560 always tends to press towards the threaded hole 530. When the connector 560 is screwed into the threaded hole 530, it will be pulled by spring 570, which will pull the plug 540 into the groove 510, thus preventing the plug 540 from loosening under vibration or external force and improving the connection stability between the plug 540 and the spline groove 520.

[0034] In this embodiment, an opening communicating with the mounting cavity is formed at the plug-in post 540, a connecting post 550 is detachably provided at the opening, a connecting plate 580 is provided between adjacent connecting posts 550, and a handle 610 is formed at the connecting plate 580.

[0035] The opening and connecting post 550 are designed to allow users to easily maintain or replace the positioning component 410.

[0036] By coordinating the connecting column 550, the connecting plate 580, and the handle 610, the connecting column 550 and the connecting plate 580 form a whole, thereby allowing multiple connecting plates 580 to be pulled quickly and simultaneously, improving the adjustment efficiency of the pedal 320.

[0037] In this embodiment, a support member is formed on the inner wall of the side plate 310 between adjacent pedals 320. The support member has a first support portion 330 that contacts the bottom wall of the pedal 320, or a second support portion 340 that contacts the top wall of the adjacent pedal 320.

[0038] The above structure ensures that the support component can always support the pedal 320 when it is being adjusted, which helps to distribute the load on the pedal 320, prevents it from deforming or being damaged due to long-term use or heavy load, and improves the stability of the pedal 320 after adjustment.

[0039] In this embodiment, a handrail is provided on the top wall of the side panel 310, and a railing is provided on the main body of the platform 100. A connecting rope is provided between the handrail and the railing.

[0040] The combination of handrails, guardrails, and connecting ropes enhances the overall safety of the ladder, providing workers with comprehensive protection.

[0041] In this embodiment, a telescopic component 120 is detachably provided on the opposite side of the platform body 100 and the corresponding ladder section 110.

[0042] By adjusting the settings of the telescopic component 120, the ladder section 110 can be used in foundation pits of different depths and can be fixed in place, thereby enhancing the stability and safety of the entire ladder structure.

[0043] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

Claims

1. A ladder for foundation pits, characterized in that, The system includes a platform body (100) and two stair sections (110) rotatably arranged symmetrically along the vertical direction of the platform body (100). Each stair section (110) has two side plates (310), and multiple pedals (320) are rotatably provided between the two side plates (310). A rotating shaft is formed at the middle of both ends of each pedal (320). Positioning components (410) corresponding to the rotating shaft are slidably provided at each side plate (310). The positioning components (410) are used to limit the rotation shaft in the circumferential direction. A recessed groove (510) is formed at the rotating shaft, a spline groove (520) is formed on the inner wall of the groove (510), and a threaded hole (530) is formed on the inner wall of the spline groove (520); a through hole is formed at the corresponding position of the side plate (310) and the groove (510); the positioning component (410) includes a plug-in post (540), a through hole and a plug-in post (540) that mates with the groove (510) and the spline groove (520) are formed on the outer wall of the plug-in post (540), an installation cavity is formed on the side of the plug-in post (540) away from the groove (510), and a connector (560) that is rotatably connected to the threaded hole (530) is provided in the installation cavity.

2. The ladder for foundation pits according to claim 1, characterized in that: A fixing plate is formed at the end of the connector (560) away from the threaded hole (530), and a spring (570) is provided between the fixing plate and the inner wall of the mounting cavity. The spring (570) is used to provide elastic force to keep the plug pin (540) pressed in the direction of the threaded hole (530).

3. The ladder for foundation pits according to claim 1, characterized in that: An opening communicating with the mounting cavity is formed at the plug-in post (540), and a connecting post (550) is detachably provided at the opening. A connecting plate (580) is provided between adjacent connecting posts (550), and a handle (610) is formed at the connecting plate (580).

4. The ladder for foundation pits according to claim 1, characterized in that: A support member is formed on the inner wall of the side plate (310) between adjacent pedals (320). The support member has a first support portion (330) that contacts the bottom wall of the pedal (320) or a second support portion (340) that contacts the top wall of the adjacent pedal (320).

5. A ladder for foundation pits according to claim 1, characterized in that: The side panel (310) has a handrail at the top wall, and the platform body (100) has a railing. A connecting rope is provided between the handrail and the railing.

6. A ladder for foundation pits according to claim 1, characterized in that: The platform body (100) and the corresponding ladder section (110) are detachably equipped with telescopic components (120).

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