CN-224228601-U - Cat ladder for foundation pit

CN224228601UCN 224228601 UCN224228601 UCN 224228601UCN-224228601-U

Abstract

The utility model discloses a cat ladder for a foundation pit, and belongs to the technical field of building construction. The utility model provides a cat ladder for foundation ditch, its includes platform main part and rotationally follows two bench that the vertical direction symmetry of platform main part set up, and the bench has two curb plates, rotationally be equipped with a plurality of pedals between two curb plates, pedal both ends middle part is formed with the axis of rotation, and curb plate department all slidable is equipped with the locating component that corresponds with the axis of rotation, and locating component is used for forming spacingly to the axis of rotation circumference. Through the cooperation setting of two bench, locating component, footboard and axis of rotation for when the foundation ditch that the foundation ditch degree of depth is shallower uses, rotate this cat ladder to the chevron shape state, and rotate a plurality of footboard to with ground level state, as shown in the figure state, can use alone between foundation ditch and cushion cap, both improved the stability of this cat ladder, provided extra passageway between foundation ditch and cushion cap again for this cat ladder can be applicable to different service scenarios, improved the application scope of this cat ladder.

Inventors

Yue Yewei
CHEN XUE
MENG YAOTONG
ZHANG DONGSHENG
YUAN CHANGWEI
Shen Dianfeng
YANG FAN
CHENG XIANG
CHEN YUHAO
HOU MAN

Assignees

中铁十局集团第四工程有限公司
中铁十局集团有限公司
南京上铁地方铁路开发有限公司

Dates

Publication Date: 20260512
Application Date: 20241225

Claims (6)

1. The climbing ladder for the foundation pit is characterized by comprising a platform main body (100) and two ladder sections (110) which are rotatably and symmetrically arranged along the vertical direction of the platform main body (100), wherein each ladder section (110) is provided with two side plates (310), a plurality of pedals (320) are rotatably arranged between the two side plates (310), rotating shafts are formed in the middle parts of two ends of each pedal (320), positioning assemblies (410) corresponding to the rotating shafts are slidably arranged at the side plates (310), and the positioning assemblies (410) are used for limiting the circumference of the rotating shafts; The positioning assembly (410) comprises a plug-in column (540), a through hole is formed in the outer wall of the plug-in column (540), the plug-in column (540) is matched with the spline groove (520) in the groove, a mounting cavity is formed in one side, far away from the groove (510), of the plug-in column (540), and a connecting piece (560) which penetrates through the plug-in column (540) and is in threaded connection with the threaded hole (530) is rotatably arranged in the mounting cavity.
2. The foundation pit ladder of claim 1, wherein the connecting piece (560) is provided with a fixing plate at one end far away from the threaded hole (530), a spring (570) is arranged between the fixing plate and the inner wall of the installation cavity, and the spring (570) is used for providing elastic force for keeping the plug-in column (540) pressed towards the direction of the threaded hole (530).
3. The foundation pit ladder of claim 1, wherein the insertion posts (540) are formed with openings penetrating the installation cavity, the openings are detachably provided with connecting posts (550), connecting plates (580) are arranged between adjacent connecting posts (550), and handles (610) are formed at the connecting plates (580).
4. The foundation pit ladder according to claim 1, wherein the side plates (310) are formed at inner walls thereof with a support member located between adjacent steps (320), the support member having a first support portion (330) contacting a bottom wall of the step (320) or a second support portion (340) contacting a top wall of the adjacent step (320).
5. The foundation pit ladder of claim 1, wherein the side plates (310) are provided with handrails at the top wall, the platform main body (100) is provided with handrails, and connecting ropes are arranged between the handrails and the handrails.
6. The foundation pit ladder according to claim 1, wherein the telescopic members (120) are detachably provided at opposite sides of the platform body (100) from the corresponding steps (110).

Description

Cat ladder for foundation pit Technical Field The utility model relates to the technical field of building construction, in particular to a cat ladder for a foundation pit. Background In the foundation ditch cushion cap work progress, along with the completion of cushion cap steel reinforcement cage ligature construction operation, the workman is realized by foundation ditch bottom to the transition at cushion cap top with the help of foundation ditch side slope excavation platform, and excavation work load is big, and the silt on foundation ditch limit appears skidding easily, and the security is poor, and the installation transition of cat ladder is inconvenient in the work progress, influences workman operation progress. The prior art has the publication number (CN 212773639U) of a folding foundation pit construction cat ladder, wherein an upright post is vertically fixed on a foundation pit, a transition platform is supported at the top of the upright post to provide a flat surface, a bench is rotatably connected with the first side surface, the bench comprises a plurality of first pedals and two first bench walls respectively connected with two ends of the first pedals, a second bench is rotatably connected with the second side surface, the second bench comprises a plurality of second pedals and two second bench walls respectively connected with two ends of the second pedals, the second bench rotates between 0-270 degrees relative to the bench, and a bearing platform lap platform is rotatably connected with the third side surface to connect the transition platform and the bearing platform. Although the climbing ladder has the advantages that foundation pit excavation and bearing platform constructor pass through simultaneously, the use mode is single, the climbing ladder can only be used for foundation pits, bearing platforms and the ground simultaneously, and when the foundation pit with the shallower depth of the foundation pit is used, the climbing ladder cannot be used between the foundation pit and the bearing platforms, so that the use range of the climbing ladder is smaller. Disclosure of utility model The utility model provides a cat ladder for a foundation pit, which can overcome certain or certain defects in the prior art. The utility model relates to a cat ladder for a foundation pit, which comprises a platform main body and two ladder sections rotatably and symmetrically arranged along the vertical direction of the platform main body, wherein the ladder sections are provided with two side plates, a plurality of pedals are rotatably arranged between the two side plates, rotating shafts are formed in the middle parts of two ends of each pedal, positioning assemblies corresponding to the rotating shafts are slidably arranged at the side plates, and the positioning assemblies are used for limiting the circumference of the rotating shafts. Through the cooperation setting of two bench, locating component, footboard and axis of rotation for when the foundation ditch that the foundation ditch degree of depth is shallower uses, rotate this cat ladder to the chevron shape state, and rotate a plurality of footboard to with ground level state, as shown in the figure state, can use alone between foundation ditch and cushion cap, both improved the stability of this cat ladder, provided extra passageway between foundation ditch and cushion cap again for this cat ladder can be applicable to different service scenarios, improved the application scope of this cat ladder. In the embodiment, an inwards concave groove is formed at the rotating shaft, a spline groove is formed at the inner wall of the groove, a threaded hole is formed at the inner wall of the spline groove, a through hole is formed at the position, corresponding to the groove, of the side plate, the positioning assembly comprises a plug-in column, a plug-in column penetrating through the through hole and matched with the groove and the spline groove is formed at the outer wall of the plug-in column, a mounting cavity is formed at one side, far away from the groove, of the plug-in column, and a connecting piece penetrating through the plug-in column and in threaded connection with the threaded hole is rotatably arranged in the mounting cavity. Through the structure, when the angle of the pedal is adjusted, the plug-in column is pulled outwards to release the fit with the spline groove, namely the circumferential limit of the pedal is released, so that the pedal is convenient to adjust, the pedal is suitable for different use states, and the pedal connecting device is simple and quick to operate and stable and reliable to connect. In this embodiment, the connecting piece is kept away from screw hole one end and is formed with the fixed plate, is equipped with the spring between fixed plate and the installation cavity inner wall, and the spring is used for providing the elasticity that keeps the spliced pole to compress tightly to the screw hole di