Suspension type ladder cage for foundation pit

Abstract

The utility model discloses a suspension type ladder cage for a foundation pit. The suspension type ladder cage comprises two connecting main beams, two connecting secondary beams, connecting profile steel, a ladder cage body, a positioning assembly and a connecting piece. The two connecting main beams are arranged in a spaced mode, and the two ends of each connecting main beam are connected with a supporting system of a foundation pit. The two connecting secondary beams are respectively connected between the two connecting main beams, and the two connecting secondary beams are arranged at intervals; the connecting section steel is connected to the four corners of the ladder cage body, and a plurality of positioning holes are formed in the connecting section steel in the vertical direction at intervals. One end of the connecting piece can be connected with the positioning hole, and the other end of the connecting piece can be connected with the connecting secondary beam; the connecting profile steel and the elevator cage body can move in the vertical direction. The positioning assembly is arranged on the outer sides of the connecting profile steel and the elevator cage body in a sleeving mode and connected with the connecting secondary beams or the connecting main beams. The time and labor required for moving the elevator cage can be greatly reduced, the operation period can be effectively shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary tools for deep foundation pit construction in basements, and in particular to a suspended ladder cage for foundation pits. Background Technology

[0002] In current deep foundation pit construction for basements, pedestrian access is necessary to ensure the safe movement of workers up and down the pit. Previously, when the excavation depth was shallow and the basement project was small, the number of workers was relatively small, so simple steel pipe staircases were often used as access routes. The construction of these staircases relied heavily on the experience of the builders, lacked specific guidelines, and thus had limited safety performance. However, due to their ease of construction and dismantling, and low barrier to entry, they still retain some practicality in shallow foundation pit construction.

[0003] However, as the excavation depth of foundation pits continues to increase, these simple staircases can no longer meet safety requirements. To solve this problem, steel ladder cages have emerged. Steel ladder cages consist of standardized staircase sections and a frame welded from structural steel, with safety netting installed around the perimeter to enhance safety. These staircases can be standardized and manufactured in factories, ensuring consistent quality, and possess sufficient load-bearing capacity to provide ample safety even when erected to a height exceeding 20 meters. Utility Model Content

[0004] To avoid the problem of traditional ladder cages needing to be constantly moved as the excavation progresses, this utility model provides a suspended ladder cage for foundation pits. When deep foundation pits are excavated in layers, there is no need to move the ladder cage, which can significantly reduce the time and manpower required to move the ladder cage, effectively save the operation cycle and improve work efficiency.

[0005] This utility model embodiment provides a suspended ladder cage for foundation pits, including: two connecting main beams, two connecting secondary beams, connecting steel, ladder cage body, positioning components and connecting parts;

[0006] The two connecting main beams are spaced apart, and the two ends of the two connecting main beams are respectively connected to the support system of the foundation pit;

[0007] The two connecting secondary beams are respectively connected between the two connecting main beams, and the two connecting secondary beams are spaced apart;

[0008] The connecting steel is connected to the four corners of the ladder cage body, and the connecting steel is provided with a plurality of positioning holes at intervals along the vertical direction;

[0009] The connectors are provided in a one-to-one correspondence with the connecting steel sections. One end of the connector can be connected to the positioning hole, and the other end of the connector can be connected to the connecting secondary beam.

[0010] The connecting steel and the ladder cage body can move vertically to adjust the distance between the ladder cage body and the foundation pit;

[0011] The positioning component is sleeved on the outside of the connecting steel and the ladder cage body, and is connected to the connecting secondary beam or the connecting main beam.

[0012] The positioning component is used to be inserted into the positioning holes in sequence according to the arrangement order of the plurality of positioning holes during the vertical movement of the connecting steel and the ladder cage body.

[0013] Optionally, the positioning component includes a positioning element, at least one elastic sheet, and a positioning protrusion;

[0014] The positioning component is sleeved on the outside of the connecting steel and the ladder cage body, and is fixedly connected to the connecting secondary beam or the connecting main beam.

[0015] The inner wall of the positioning component is provided with a receiving groove;

[0016] The elastic sheet is disposed in the receiving groove, the first end of the elastic sheet is rotatably connected to the positioning member, and the second end of the elastic sheet is connected to the positioning protrusion;

[0017] The positioning protrusion can be inserted into the positioning hole.

[0018] Optionally, the positioning component further includes a sheet sensor and a counter wirelessly connected to the sheet sensor;

[0019] The sheet-shaped sensor is disposed within the receiving groove;

[0020] The elastic sheet can abut against the sheet-shaped sensor;

[0021] The sheet-like sensor is used to transmit a signal to the counter once each time it is disconnected from the elastic sheet;

[0022] The counter is used to receive signals from the sheet sensor and display the number of times the signals are received.

[0023] Optionally, guide strips are provided on both the upper and lower sides of the positioning hole;

[0024] The positioning protrusion is provided with guide slopes on its upper and lower sides;

[0025] The guide slope can fit into the guide strip.

[0026] Optionally, the suspended ladder cage for the foundation pit also includes embedded plates and embedded bolts;

[0027] Both ends of the two connecting main beams are provided with the embedded plates;

[0028] The embedded plate is connected to the support system via the embedded bolts.

[0029] Optionally, the ladder cage body includes multiple standard steel ladder cage sections;

[0030] The multiple standard sections of the steel ladder cage are vertically connected section by section to form a columnar structure;

[0031] The columnar structure is provided with connecting steel at its four corners.

[0032] Optionally, the multiple standard sections of the steel ladder cage are connected by bolts.

[0033] Optionally, the ladder cage body may also include a pedestrian staircase connected to the standard section of the steel ladder cage.

[0034] Optionally, the ladder cage body may also include upright handrails connected to both sides of the pedestrian staircase.

[0035] Optionally, the suspended ladder cage for the foundation pit also includes a connecting groove;

[0036] The connecting groove is sleeved on the outside of the connecting secondary beam;

[0037] The connecting groove can be threadedly connected to the connecting main beam.

[0038] The beneficial effects of the above-mentioned technical solutions provided in the embodiments of this utility model include at least the following:

[0039] This utility model provides a suspended ladder cage for foundation pits. By connecting the main beam to the support system of the foundation pit and connecting the secondary beam to the main beam, a frame structure is formed. The ladder cage body is erected within the frame structure and connected to the secondary beam through connectors. This allows the ladder cage body to be suspended within the foundation pit, avoiding the problem of traditional ladder cages needing to be constantly moved as the excavation progresses. This greatly reduces the time and manpower required to move the ladder cage, effectively saving the work cycle and improving work efficiency.

[0040] By installing connecting steel sections at the four corners of the ladder cage body, and setting multiple positioning holes at vertical intervals on the connecting steel sections, and connecting fittings to these positioning holes, the connecting steel sections and the ladder cage body can be moved vertically to adjust the distance between the ladder cage body and the foundation pit. The positions of the connecting steel sections and the ladder cage body are then fixed by connecting fittings to the corresponding positioning holes. This allows for quick and precise adjustment of the distance between the ladder cage body and the foundation pit, ensuring that the ladder cage body always maintains a suitable distance to accommodate different excavation depths and meet the needs of excavation operations and personnel access to the foundation pit.

[0041] By setting up positioning components, as the connecting steel and the cage body move vertically, the positioning components will be inserted into the positioning holes in sequence according to the arrangement of multiple positioning holes, thereby ensuring that the movement of the connecting steel and the cage body is not misaligned, ensuring that the connecting parts are aligned with the corresponding positioning holes, thus ensuring the reliability of the connection between the two, and improving the safety and stability of the entire suspended cage.

[0042] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0043] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0044] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0045] Figure 1 This is a top view of the suspended ladder cage body provided in the embodiment of this utility model;

[0046] Figure 2 This is a front view of the connection between the connector and the connecting steel provided in this embodiment of the utility model;

[0047] Figure 3 This is a top view of the connection between the connector and the connecting steel provided in this embodiment of the utility model;

[0048] Figure 4 This is a schematic diagram of the connecting steel provided in the embodiments of this utility model;

[0049] Figure 5 This is a schematic diagram of the positioning group provided in the embodiments of this utility model;

[0050] Figure 6 This is a schematic diagram of the structure of the elastic sheet provided in the embodiment of this utility model;

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Cage body; 11. Pedestrian staircase; 2. Connecting steel; 21. Positioning hole; 3. Connecting main beam; 4. Connecting parts; 5. Support system; 6. Embedded plate; 7. Embedded bolt; 8. Connecting secondary beam; 9. Connecting groove; 10. Positioning assembly; 101. Positioning part; 102. Elastic sheet; 103. Positioning protrusion. Detailed Implementation

[0053] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0054] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "rear," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] The inventors discovered that existing steel ladder cages, in practical use, extend from the bottom of the excavation pit to the ground surface, with their base directly placed on the foundation soil. Therefore, to ensure stability, the foundation soil needs to be hardened. Furthermore, the height of the steel ladder cage is adjusted according to the depth of the excavation. Given that deep excavation requires layered excavation, the steel ladder cage inevitably needs to be relocated and disassembled multiple times during use. This not only consumes a significant amount of labor resources but also extends the construction period.

[0057] To address the aforementioned issues, the inventors developed a suspended ladder cage for foundation pits. This ladder cage is suspended entirely within the foundation pit, eliminating the need to move it during layered excavation of deep foundation pits, thus effectively shortening the work cycle.

[0058] See Figures 1-4This embodiment proposes a suspended ladder cage for foundation pits, comprising: two main connecting beams 3, two secondary connecting beams 8, connecting steel sections 2, a ladder cage body 1, positioning components 10, and connectors 4. The two main connecting beams 3 are spaced apart, and their ends are connected to the foundation pit support system 5 to ensure the overall stability and safety of the suspended ladder cage. The two secondary connecting beams 8 are respectively connected between the two main connecting beams 3, and are spaced apart, further reinforcing the overall structure of the suspended ladder cage and providing connection points for the ladder cage body 1. The ladder cage body 1 is located inside the foundation pit and serves as the main access point for construction personnel. The connecting steel sections 2 are connected to the four corners of the ladder cage body 1, and the connecting steel sections 2 are provided with multiple positioning holes 21 spaced apart along the vertical direction. These positioning holes 21 allow for precise vertical adjustment of the connecting steel sections 2. Connector 4 is provided in a one-to-one correspondence with connecting steel 2. One end of connector 4 can be connected to positioning hole 21, and the other end of connector 4 can be connected to connecting secondary beam 8. Positioning component 10 is sleeved on the outside of connecting steel 2 and ladder cage body 1, and is connected to connecting secondary beam 8 or connecting main beam 3. That is, when connecting steel 2 and ladder cage body 1 move in the vertical direction, positioning component 10 as a whole will not move vertically.

[0059] In use, the main connecting beam 3 is connected to the support system 5 of the foundation pit, and the secondary connecting beam 8 is connected to the main connecting beam 3, forming a frame structure. The ladder cage body 1 is then erected within this frame structure. The positioning holes 21 are connected using connectors 4, and the connectors 4 are also connected to the secondary connecting beam 8, thus fixing the position of the ladder cage body 1 and completing the assembly of the entire suspended ladder cage. As the layered excavation of the foundation pit progresses, the depth of the pit will continuously change, therefore, it is necessary to adaptively adjust the distance between the bottom of the ladder cage body 1 and the foundation pit. At this point, simply operate the connector 4 to disengage it from the current positioning hole 21, and then move the connecting steel 2 and the cage body 1 vertically to adjust the distance between the cage body 1 and the pit. At this time, the positioning component 10 will be inserted into the positioning holes 21 in sequence according to the arrangement of the multiple positioning holes 21, so that the connecting steel 2 and the cage body 1 always maintain vertical displacement, thereby ensuring that the movement of the connecting steel 2 and the cage body 1 is not misaligned, until the connecting steel 2 and the cage body 1 move to the appropriate position. Then, operate the connector 4 to connect the connector 4 with the corresponding positioning hole 21, thereby fixing the position of the connecting steel 2 and the cage body 1.

[0060] In this embodiment, the ladder cage body 1 is connected to the connecting secondary beam 8 via the connector 4, thereby suspending it within the foundation pit. This avoids the problem of traditional ladder cages needing to be constantly moved as the excavation progresses, significantly reducing the time and manpower required to move the ladder cage, effectively saving work time and improving work efficiency. Furthermore, the suspended ladder cage structure of this embodiment is simple and easy to construct. The design of the connector 4 and positioning hole 21 makes the installation and disassembly of the suspended ladder cage very simple and quick, requiring no complex tools or a large amount of labor. All components of the suspended ladder cage can be recycled, not only reducing material costs but also reducing construction waste, achieving economic savings and environmental protection.

[0061] In this embodiment, by setting multiple positioning holes 21 and corresponding connectors 4, the positions of the connecting steel 2 and the cage body 1 in the vertical direction can be adjusted adaptively. This allows for quick and precise adjustment of the distance between the cage body 1 and the foundation pit, ensuring that the cage body 1 always maintains a suitable distance from the foundation pit to adapt to different excavation depths and meet the needs of excavation operations and construction personnel entering and exiting the foundation pit.

[0062] In this embodiment, by setting the positioning component 10, the position accuracy during the movement of the connecting steel 2 and the cage body 1 can be ensured, avoiding misalignment, so as to ensure that the connecting piece 4 is aligned with the corresponding positioning hole 21, thereby ensuring the connection between the two and improving the safety and stability of the entire suspended cage.

[0063] In one specific embodiment, see [reference] Figure 2 , Figure 5 and Figure 6 The positioning component 10 includes a positioning element 101, at least one elastic piece 102, and a positioning protrusion 103. The positioning element 101 is sleeved on the outside of the connecting steel section 2 and the cage body 1, and is fixedly connected to the connecting secondary beam 8 or the connecting main beam 3. The inner wall of the positioning element 101 has a receiving groove (not shown in the figure). The elastic piece 102 is disposed in the receiving groove. The first end of the elastic piece 102 is rotatably connected to the positioning element 101, and the second end of the elastic piece 102 is connected to the positioning protrusion 103. The positioning protrusion 103 can be inserted into the positioning hole 21. Due to the elasticity of the elastic piece 102, it can flexibly respond to the movement of the connecting steel section 2 and the cage body 1, while providing the necessary rebound force to ensure that the positioning protrusion 103 can be accurately engaged in the positioning hole 21.

[0064] When adjusting the distance between the cage body 1 and the foundation pit, it is necessary to move the connecting steel 2 and the cage body 1, and position them using the positioning component 10. Specifically, when the connecting steel 2 and the cage body 1 move, the elastic sheet 102 can elastically deform within a certain range, allowing the positioning protrusion 103 to easily insert into and pull out of the positioning hole 21. Therefore, relative to the connecting steel 2 and the cage body 1, the positioning protrusion 103 will move sequentially from one positioning hole 21 to another positioning hole 21, thereby ensuring that the movement of the connecting steel 2 and the cage body 1 is not misaligned. At the same time, it aligns the connecting piece 4 with the corresponding positioning hole 21, ensuring the reliable connection between the two, thereby ensuring the safety and stability of the entire suspended cage.

[0065] In one specific embodiment, see [reference] Figure 5 The positioning component 10 also includes a sheet sensor (not shown) and a counter (not shown) wirelessly connected to the sheet sensor. The sheet sensor is disposed in a receiving groove, and the elastic sheet 102 can abut against the sheet sensor. When the elastic sheet 102 is in a compressed state, that is, when the positioning protrusion 103 abuts against the outer wall of the connecting steel 2, the elastic sheet 102 abuts against the sheet sensor. Once the elastic sheet 102 returns to its original state, the elastic sheet 102 no longer contacts the sheet sensor. Each time the sensor is disconnected from the elastic sheet 102, it transmits a signal to the counter. The counter has signal receiving and display functions. On the one hand, the counter can receive the signal from the sheet sensor and accurately record the number of signals. On the other hand, the counter has a clear display interface that can display the number of signals, making it convenient for construction personnel to check the number of signals at any time, that is, the cumulative number of times the positioning protrusion 103 is inserted into the positioning hole 21.

[0066] During the adjustment of the distance between the cage body 1 and the foundation pit, when the positioning protrusion 103 is not inserted into the positioning hole 21, it abuts against the outer wall of the connecting steel 2, forcing the entire elastic plate 102 to abut against the sheet sensor. At this time, the elastic plate 102 is in a compressed state. As the connecting steel 2 and the cage body 1 move, the entire elastic plate 102 moves relative to the position of the positioning hole 21. The elastic plate 102 returns from the compressed state to its original state, and the entire elastic plate 102 no longer abuts against the sheet sensor. The sheet sensor transmits a signal to the counter. At the same time, the positioning protrusion 103 is accommodated in the positioning hole 21. After receiving the signal from the sheet sensor, the counter accumulates and displays the number of times the signal is received. The number of times the positioning protrusion 103 is inserted into the positioning hole 21 represents the number of times the positioning protrusion 103 is inserted into the positioning hole 21.

[0067] By precisely counting the insertion times of the positioning protrusions 103, the number of positioning holes 21 for the descending or ascending of the connecting steel sections 2 at the four corners of the ladder cage body 1 is ensured to be consistent, thereby maintaining the horizontal state of the ladder cage and improving the safety of construction personnel. The use of sheet sensors and counters reduces human error and improves the accuracy and reliability of the adjustment process.

[0068] In addition, when positioning holes 21 are set on the connecting steel 2, the spacing between any two adjacent positioning holes 21 is predetermined. The number of positioning holes 21 for the ladder cage body 1 and the connecting steel 2 to descend or rise can be determined according to the counting function of the counter. Based on the number of positioning holes 21, the height of the entire ladder cage body 1 to descend or rise can be determined, so that the distance between the ladder cage body 1 and the foundation pit meets the requirements, and the adjustment process of the ladder cage body 1 is more precise.

[0069] In one specific embodiment, see [reference] Figure 4 and Figure 6 The positioning hole 21 is provided with guide strips (not shown in the figure) on both the upper and lower sides. The main function of the guide strips is to guide the accurate insertion and removal of the positioning protrusion 103, ensuring that the positioning protrusion 103 can smoothly enter or leave the positioning hole 21, while reducing friction and resistance. The positioning protrusion 103 is provided with guide slopes (not shown in the figure) on both the upper and lower sides, which correspond to the guide strips and can fit against the guide strips.

[0070] During the adjustment of the distance between the cage body 1 and the foundation pit, when the positioning protrusion 103 needs to be inserted into the positioning hole 21, its guide ramp will first contact the guide bar. As the connecting steel 2 and the cage body 1 move, the positioning protrusion 103 smoothly enters the positioning hole 21 along the trajectory of the guide bar until it is fully inserted. Similarly, when the positioning protrusion 103 needs to be pulled out of the positioning hole 21, its guide ramp will also first contact the guide bar, and then smoothly move out of the positioning hole 21 along the trajectory of the guide bar. The cooperation of the guide bar and the guide ramp makes the insertion and extraction process of the positioning protrusion 103 more accurate, reducing the risk of deviation and misalignment. Due to the presence of the guide ramp, the insertion and extraction process of the positioning protrusion 103 is smoother and more fluid, reducing the difficulty of operation and labor intensity. The design of the guide ramp allows the positioning protrusion 103 to move smoothly along the guide bar when inserted into or pulled out of the positioning hole 21, avoiding direct impact on the edge of the positioning hole 21, thereby protecting the positioning protrusion 103 and the positioning hole 21 and extending its service life.

[0071] In one specific embodiment, see [reference] Figure 1The suspended ladder cage also includes embedded plates 6 and embedded bolts 7. Embedded plates 6 are installed at both ends of the two connecting main beams 3. The embedded plates 6 are connected to the support system 5 via embedded bolts 7. The embedded bolts 7 tightly connect the embedded plates 6 to the support system 5, providing strong tensile and shear force resistance to ensure that the entire suspended ladder cage will not loosen or fall off due to external forces during use. The main function of the embedded plates 6 is to provide a robust connection surface, allowing the connecting main beams 3 and the support system 5 to be firmly connected together via the embedded bolts 7. This enhances the connection strength between the connecting main beams 3 and the support system 5, improving the stability of the entire suspended ladder cage. Simultaneously, the stable connection ensures that the suspended ladder cage will not loosen or fall off due to external forces during use, thereby improving the safety of construction personnel. Furthermore, the pre-installation of the embedded plates 6 greatly simplifies the installation process of the suspended ladder cage, reducing the complexity and time costs of on-site construction.

[0072] In one specific embodiment, see [reference] Figure 1 The cage body 1 comprises multiple steel cage standard sections (not shown in the figure), each of which is an independent unit with the same size and shape. Multiple steel cage standard sections are vertically connected section by section to form a columnar structure. This structural form can withstand large vertical and horizontal loads, possesses high rigidity and load-bearing capacity, ensuring the safety of the entire suspended cage during use. Simultaneously, the steel cage standard sections can be reused, achieving economic and environmental benefits. Connecting steel sections 2 are provided at the four corners of the columnar structure.

[0073] In one specific embodiment, multiple standard sections of the steel ladder cage are connected by bolts. This connection method is not only simple and convenient, but also has high strength and stability. Bolt connection can ensure a tight connection between the standard sections of the steel ladder cage and prevent safety hazards caused by loosening.

[0074] In one specific embodiment, see [reference] Figure 1 The ladder cage body 1 also includes a pedestrian staircase 11 connected to the standard section of the steel ladder cage, which serves as the main passage for construction workers to go up and down the suspended ladder cage, facilitating construction work.

[0075] In one specific embodiment, see [reference] Figure 1 The ladder cage body 1 also includes upright handrails (not shown in the figure) connected to both sides of the pedestrian staircase to prevent construction workers from slipping or falling and to ensure their personal safety.

[0076] In one specific embodiment, see [reference] Figure 1 and Figure 2The suspended ladder cage also includes a connecting groove 9, which is fitted onto the outside of the connecting secondary beam 8 and can be threadedly connected to the connecting main beam 3. By providing the connecting groove 9, the connection between the connecting secondary beam 8 and the connecting main beam 3 can be ensured, thereby guaranteeing the safety and stability of the entire suspended ladder cage. Simultaneously, by providing the connecting groove 9, the connecting secondary beam 8 and the connecting main beam 3 can be easily disassembled and reinstalled, facilitating the transfer and reuse of the ladder cage between different construction sites, thus improving the flexibility and convenience of the suspended ladder cage.

[0077] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. This disclosure is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims. Thus, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model is also intended to include these modifications and variations.

Claims

1. A suspended ladder cage for foundation pits, characterized in that, include: Two connecting main beams, two connecting secondary beams, connecting steel sections, cage body, positioning components, and connectors; The two connecting main beams are spaced apart, and the two ends of the two connecting main beams are respectively connected to the support system of the foundation pit; The two connecting secondary beams are respectively connected between the two connecting main beams, and the two connecting secondary beams are spaced apart; The connecting steel is connected to the four corners of the ladder cage body, and the connecting steel is provided with a plurality of positioning holes at intervals along the vertical direction; The connectors are provided in a one-to-one correspondence with the connecting steel sections. One end of the connector can be connected to the positioning hole, and the other end of the connector can be connected to the connecting secondary beam. The connecting steel and the ladder cage body can move vertically to adjust the distance between the ladder cage body and the foundation pit; The positioning component is sleeved on the outside of the connecting steel and the ladder cage body, and is connected to the connecting secondary beam or the connecting main beam. The positioning component is used to be inserted into the positioning holes in sequence according to the arrangement order of the plurality of positioning holes during the vertical movement of the connecting steel and the ladder cage body.

2. The suspended ladder cage for foundation pits according to claim 1, characterized in that, The positioning component includes a positioning element, at least one elastic sheet, and a positioning protrusion; The positioning component is sleeved on the outside of the connecting steel and the ladder cage body, and is fixedly connected to the connecting secondary beam or the connecting main beam. The inner wall of the positioning component is provided with a receiving groove; The elastic sheet is disposed in the receiving groove, the first end of the elastic sheet is rotatably connected to the positioning member, and the second end of the elastic sheet is connected to the positioning protrusion; The positioning protrusion can be inserted into the positioning hole.

3. The suspended ladder cage for foundation pits according to claim 2, characterized in that, The positioning component also includes a sheet sensor and a counter wirelessly connected to the sheet sensor; The sheet-shaped sensor is disposed within the receiving groove; The elastic sheet can abut against the sheet-shaped sensor; The sheet-like sensor is used to transmit a signal to the counter once each time it is disconnected from the elastic sheet; The counter is used to receive signals from the sheet sensor and display the number of times the signals are received.

4. The suspended ladder cage for foundation pits according to claim 2 or 3, characterized in that, Guide strips are provided on both the upper and lower sides of the positioning hole; The positioning protrusion is provided with guide slopes on its upper and lower sides; The guide slope can fit into the guide strip.

5. The suspended ladder cage for foundation pits according to claim 4, characterized in that, It also includes embedded plates and embedded bolts; Both ends of the two connecting main beams are provided with the embedded plates; The embedded plate is connected to the support system via the embedded bolts.

6. The suspended ladder cage for foundation pits according to claim 1 or 5, characterized in that, The ladder cage body includes multiple standard steel ladder cage sections; The multiple standard sections of the steel ladder cage are vertically connected section by section to form a columnar structure; The columnar structure is provided with connecting steel at its four corners.

7. The suspended ladder cage for foundation pits according to claim 6, characterized in that, The multiple standard sections of the steel ladder cage are connected by bolts.

8. The suspended ladder cage for foundation pits according to claim 6, characterized in that, The ladder cage body also includes a pedestrian staircase connected to the standard section of the steel ladder cage.

9. The suspended ladder cage for foundation pits according to claim 8, characterized in that, The ladder cage body also includes upright handrails connected to both sides of the pedestrian staircase.

10. The suspended ladder cage for foundation pits according to claim 1 or 9, characterized in that, It also includes a connecting slot; The connecting groove is sleeved on the outside of the connecting secondary beam; The connecting groove can be threadedly connected to the connecting main beam.

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