Foundation pit construction lifting equipment and using method

Abstract

The invention provides foundation pit construction lifting equipment and a using method, and relates to the technical field of foundation pit construction. The foundation pit construction lifting equipment comprises fixing modules, a hoisting module and a ladder cage module, the multiple fixing modules are arranged at intervals in the first direction, each fixing module is fixedly connected with a supporting structure of a foundation pit and provided with a shaft, and the hoisting module is arranged on the fixing module on the uppermost layer and provided with a hoisting point; the hoisting point is higher than the fixing module, at least one elevator cage module is connected with the hoistway in a sliding mode in the first direction, and the elevator cage module is suitable for stopping at the preset position of the hoistway. By integrating the fixing module, the hoisting module and the ladder cage module, self-bearing, self-hoisting and high-precision installation of the lifting equipment in the foundation pit are achieved.

Description

Technical Field

[0001] This application relates to the field of foundation pit construction technology, and more specifically, to a foundation pit construction lifting device and its usage method. Background Technology

[0002] In deep foundation pit construction, Z-shaped safety cages have become the preferred solution for vertical transportation channels due to their superior safety performance and moderate slope design. However, the installation and dismantling of traditional Z-shaped cages still mainly rely on large hoisting equipment located at the top of the pit.

[0003] In traditional installation processes, a truck crane must be positioned at the edge of the pit to hoist the standard cage sections to a designated location within the pit using hooks and wire rope systems. Subsequently, workers must manually guide and position the new standard sections from an aerial work platform, securing them to the existing sections using pins or bolts. This process is highly dependent on large equipment and requires workers to perform high-altitude assembly work within the pit.

[0004] The main technical bottlenecks are reflected in the following aspects: 1. Space limitations and equipment conflicts: In foundation pit construction sites with limited working space, large hoisting equipment often faces difficulties in access, limited positioning, and inconvenient deployment. At the same time, the installation of ladder cages will occupy core vertical transportation equipment resources such as tower cranes, forcing other construction procedures to be interrupted and seriously affecting the overall construction progress.

[0005] 2. Significant safety hazards during installation: The suspended standard sections are prone to large-scale swaying, posing a risk of collision with the foundation pit support structure or the already installed ladder cage. Workers lack a stable working platform when working at heights, facing the dual safety threats of falls from heights and being struck by falling objects during assembly and connection operations.

[0006] 3. Low installation accuracy and efficiency: The positioning and adjustment rely entirely on manual experience and the cooperation between signalmen and operators, making it difficult to guarantee installation accuracy. The alignment process is time-consuming and labor-intensive, resulting in a significant extension of the installation cycle.

[0007] 4. Additional load on foundation pit slopes: When large hoisting equipment operates in the pit edge area, it requires a high bearing capacity of the foundation, which may induce engineering risks such as ground settlement or a decrease in slope stability. Summary of the Invention

[0008] The purpose of this application is to provide a foundation pit construction lifting device and its usage method, which is applicable to foundation pit construction in space-constrained areas, improves the installation safety factor, ensures installation accuracy and efficiency, and protects the shape of the foundation pit and foundation.

[0009] In a first aspect, the present invention provides a foundation pit construction lifting device, which includes a fixed module, a hoisting module, and a ladder cage module. A plurality of the fixed modules are spaced apart along a first direction. Each fixed module is fixedly connected to the support structure of the foundation pit and is provided with a shaft. The hoisting module is installed on the uppermost fixed module and is provided with a hoisting point. The hoisting point is set higher than the fixed module. At least one ladder cage module is slidably connected to the shaft along the first direction, and the ladder cage module is adapted to stop at a preset position in the shaft.

[0010] In an optional embodiment, each of the ladder cage modules includes a frame body, guide rails, a first construction platform, a second construction platform, and a staircase. Each guide rail is disposed on the frame body along a first direction, and the guide rails of adjacent ladder cage modules are connected along the first direction. The first construction platform is located at one end of the frame body, and the second construction platform is located at the other end of the frame body. The staircase connects the second construction platform and the first construction platform respectively. The second construction platform of the lower ladder cage module coincides with the first construction platform of the upper ladder cage module.

[0011] In an optional embodiment, the foundation pit construction lifting equipment further includes a locking module. Each guide rail includes a body and a locking part. The locking part protrudes radially from the body. The locking module is provided with a clamping port. The clamping port has a first width and a second width. The first width is smaller than the width of the locking part, and the second width is larger than the width of the locking part. When the clamping port is at the first width, the locking part cooperates with the clamping port to stop the ladder cage module. When the clamping port is at the second width, the clamping port releases the locking part to release the ladder cage module.

[0012] In an optional embodiment, the foundation pit construction lifting equipment further includes a support module, one of the support modules being fixedly connected to one of the fixing modules, and when the ladder cage module is stopped at the preset position, one of the support modules is also detachably connected to the ladder cage module.

[0013] In an optional embodiment, the support module includes a first connecting frame, a second connecting frame, a third connecting frame, diagonal bracing members, a first connecting member, and a second connecting member. The first connecting frame is fixedly connected to the fixing module. The second connecting frame is spaced apart from the first connecting frame. The third connecting frame is fixedly connected to both the first and second connecting frames. Multiple diagonal bracing members are spaced apart, and each diagonal bracing member is fixedly connected to both the first and second connecting frames. The first connecting member is fixedly connected to both the second connecting frame and the ladder cage module. Two second connecting members are symmetrically arranged about the line connecting the first connecting member and the ladder cage module as an axis of symmetry. The second connecting member is fixedly connected to the second connecting frame, and the second connecting member is fixed to the ladder cage module by anchor cables.

[0014] In an optional embodiment, the first connecting frame is provided with a connecting seat, the second connecting frame is provided with a mounting seat, the inclined tie is configured as a connecting rod, one end of the connecting rod is mounted on the connecting seat, and the other end of the connecting rod is mounted on the mounting seat.

[0015] In an optional embodiment, the first connector includes a support connecting plate and a docking support seat. The support connecting plate is fixedly connected to the third connecting frame, and the docking support seat is disposed on the support connecting plate and fixedly connected to the ladder cage module.

[0016] In an optional embodiment, the hoisting module includes a hoisting arm and a winch, the hoisting arm is rotatably connected to the fixed module, and the winch is mounted on the hoisting arm and has the hoisting point.

[0017] In an optional embodiment, the fixing module includes cantilever beams and a base, at least two of the cantilever beams are respectively fixedly connected to the support structure of the foundation pit, the base is erected on the cantilever beams, and the base is provided with the shaft.

[0018] Secondly, the present invention provides a method of using the foundation pit construction lifting equipment as described in the foregoing embodiments, the method of use comprising: Multiple fixed modules are constructed along the first direction in the support structure of the foundation pit; Install the hoisting module on the topmost fixed module; Prefabricated ladder cage modules are placed at the bottom of the pit, and the first ladder cage module is placed below the fixed module; Start the hoisting module, lower the hoisting point to the bottom of the pit, and connect the hoisting point to the first ladder cage module; Raise the first ladder cage module to a preset position and fix the first ladder cage module; Repeat the above steps, and continue to lift the ladder cage module one by one until the next lifted ladder cage module is connected to the previous fixed ladder cage module. The latter raised ladder cage module is quickly connected to the former fixed ladder cage module using fasteners.

[0019] After construction is completed, retain the hoisting module, the topmost fixed module, and the ladder cage module. Lower the ladder cage modules one by one from bottom to top. Using the topmost ladder cage module as the construction space, dismantle the fixed modules one by one from bottom to top. Finally, dismantle the hoisting module and the topmost fixed module.

[0020] Compared to existing technologies, the beneficial effects of this application are: This application uses a fixed module as the main load-bearing component to transfer the load of the foundation pit construction lifting equipment to the foundation pit support structure. Furthermore, this application integrates the hoisting module into the foundation pit lifting equipment, eliminating the need for additional large hoisting equipment. This makes it suitable for foundation pit construction in areas with limited space, improving the installation safety factor, ensuring installation accuracy and efficiency, and protecting the shape of the foundation pit and foundation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural schematic diagram of the foundation pit construction lifting equipment is shown in some embodiments; Figure 2 A three-dimensional structural schematic diagram of the foundation pit construction lifting equipment in some embodiments is shown (some components are omitted); Figure 3 A schematic diagram of the plan structure of the foundation pit construction lifting equipment in some embodiments is shown (some components are omitted); Figure 4 A connection diagram of the ladder cage module and the locking module is shown in some embodiments; Figure 5 A schematic diagram of the connection between the locking module and the guide rail is shown in some embodiments; Figure 6 A schematic diagram of the planar structure of the locking module in some embodiments is shown; Figure 7 Another three-dimensional structural schematic diagram of the foundation pit construction lifting equipment is shown in some embodiments; Figure 8 A three-dimensional structural schematic diagram of a portion of the support module is shown in some embodiments; Figure 9 A three-dimensional structural schematic diagram of another part of the support module is shown in some embodiments; Figure 10 The diagram shows the connection schematics of the second connector, the dowel pin sleeve, and the anchor cable in some embodiments; Figure 11 A flowchart illustrating the usage of the excavation pit lifting equipment in some embodiments is shown.

[0023] Explanation of key component symbols: 10-Pit construction lifting equipment; 100-Fixed module; 110-Cantilever beam; 120-Base; 121-Hydraulic shaft; 130-Diagonal brace; 200-Lifting module; 210-Lifting arm; 220-Winder; 221-Winding device; 222-Wire rope; 223-Hook; 300-Cage module; 310-Frame body; 320-Guide rail; 321-Body; 322-Locking part; d-Width; 330-First construction platform; 340-Second construction platform; 350-Staircase; 360-Docking pin sleeve; 400-Locking module; 500-Support module; 510-First... Frame 1; 511-First steel pipe; 512-Second steel pipe; 513-Third steel pipe; 520-Second frame 2; 521-First steel pipe; 522-Second steel pipe; 523-Third steel pipe; 530-Third frame 3; 540-Diagonal brace; 550-First connector; 551-Support connecting plate; 552-Diameter support seat; 560-Second connector; 561-First connecting seat; 562-Second connecting seat; 563-Loading frame; 564-Fastening docking frame; 560a-Limiting groove; 570-Anchor cable; 580-Connecting seat; 590-Mounting seat; 20-Support structure. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] Please see Figure 1 This embodiment is applicable to construction within a foundation pit, offering advantages such as independent, safe, and rapid installation and dismantling. The foundation pit consists of a bottom and sidewalls, with the upper surface of the sidewalls forming the top. Support structures 20, such as continuous walls or other reinforced concrete structures, are constructed on the sidewalls. Various construction materials are piled up within the foundation pit, and the operating space is limited.

[0030] It is worth noting that the fixed connection method not explicitly described in this embodiment can be a fixed connection method such as bolt connection or riveting.

[0031] Please see Figures 1 to 3 This embodiment provides a foundation pit construction lifting device 10, which includes a fixing module 100, a hoisting module 200, and a ladder cage module 300.

[0032] Multiple fixed modules 100 are spaced apart along a first direction. Each fixed module 100 is fixedly connected to the support structure 20 of the foundation pit and is provided with a shaft 121. Here, the first direction is configured as the depth direction of the foundation pit, i.e., the vertical direction.

[0033] Specifically, the fixed module 100 includes a cantilever beam 110 and a base 120. At least two cantilever beams 110 are fixedly connected to the support structure 20 of the foundation pit, and the base 120 is erected on the cantilever beams 110 and is provided with a shaft 121.

[0034] In this embodiment, the number of cantilever beams 110 can be set to two, with the two cantilever beams 110 spaced apart. One end of each cantilever beam 110 is pre-embedded in the support structure 20 of the foundation pit. The base 120 is a rectangular steel structure frame, with two opposite side frames respectively set on the two cantilever beams 110 and fixed by high-strength bolts or welding.

[0035] In this embodiment, the fixed module 100 may also include a diagonal brace 130, which connects the cantilever beam 110 and the support structure 20 respectively. That is, the structure of the fixed module 100 is reinforced to safely transfer the load of the foundation pit construction lifting equipment 10 to the support structure 20.

[0036] The hoisting module 200 is installed on the uppermost fixed module 100 and has a hoisting point. The hoisting point is set higher than the fixed module 100. The hoisting module 200 is used to lift or lower the ladder cage module 300.

[0037] Specifically, the lifting module 200 includes a lifting arm 210 and a winch 220. The lifting arm 210 is rotatably connected to the fixed module 100. The winch 220 is mounted on the lifting arm 210 and has a lifting point. The winch 220 includes a winching device 221, a wire rope 222, and a hook 223. The wire rope 222 is wound around the winching device 221 and extends to the lifting arm 210. The hook 223 is fixed to the end of the wire rope 222 away from the lifting arm 210, that is, the hook 223 is the aforementioned lifting point.

[0038] The winch 220 is configured as an electric winch 220, which is electrically connected to an external small power supply. The small power supply powers the electric winch 220 to meet the construction conditions for the foundation pit construction.

[0039] This embodiment enables independent operation in confined spaces, integrates a self-lifting function, completely eliminates the dependence on large equipment at the top of the pit, and requires only a small power supply to independently complete all installation and dismantling operations within the pit, greatly improving adaptability in narrow pits.

[0040] At least one ladder cage module 300 is slidably connected to the shaft 121 along a first direction, and the ladder cage module 300 is adapted to stop at a preset position of the shaft 121.

[0041] Please see Figure 1 , Figure 3 and Figure 4 Each ladder cage module 300 includes a frame body 310, a guide rail 320, a first construction platform 330, a second construction platform 340, and a staircase 350.

[0042] The main frame 310 is a cuboid structure, consisting of four columns.

[0043] Each guide rail 320 is set on the frame body 310 along the first direction. Specifically, the guide rail 320 is configured as a steel section with a specific cross-section. There are four guide rails 320. The guide rails 320 are made of rigid material. Each guide rail 320 is set on a column and fixedly connected to the column.

[0044] The guide rails 320 of adjacent ladder cage modules 300 are connected along the first direction. After multiple ladder cage modules 300 are spliced ​​together, the guide rails 320 located at the same position form a continuous vertical guide rail. This embodiment has four vertical guide rails, which are adapted to the base 120 of the cuboid frame structure.

[0045] The first construction platform 330 is located at one end of the frame body 310, and the second construction platform 340 is located at the other end of the frame body 310. The staircase 350 connects the second construction platform 340 and the first construction platform 330 respectively. The second construction platform 340 of the lower ladder cage module 300 overlaps with the first construction platform 330 of the upper ladder cage module 300.

[0046] Please see Figure 4 , Figure 5 and Figure 6To enable the cage module 300 to stop, the foundation pit construction lifting equipment 10 also includes a locking module 400. Each guide rail 320 includes a body 321 and a locking part 322. The locking part 322 protrudes radially from the body 321. The locking module 400 is provided with a clamping opening. The clamping opening has a first width and a second width. The first width is less than the width d of the locking part 322, and the second width is greater than the width d of the locking part 322. When the clamping opening is at the first width, the locking part 322 cooperates with the clamping opening to stop the cage module 300. When the clamping opening is at the second width, the clamping opening releases the locking part 322 to release the cage module 300.

[0047] In this embodiment, the clamping opening serves as a guide groove. The clamping opening slides in conjunction with the guide rail 320. The width of the clamping opening is adjusted by rotating the handwheel on the locking module 400. It is worth noting that the width of the clamping opening can be adjusted manually or electrically.

[0048] Taking electric adjustment as an example, the locking module 400 is connected to the external control module. A sensor is set on the cage module 300 and is connected to the control module. When the sensor detects the falling speed and sends a signal to the controller, the controller determines that the current falling speed exceeds the preset value and controls the locking module 400 to lock.

[0049] Please see Figure 1 , Figure 2 and Figure 5 On each fixed module 100, the number of locking modules 400 is consistent with the number of guide rails 320 and corresponds one-to-one. They are used to provide full-process anti-fall protection when the cage module 300 is raised and lowered, and to lock the guide rails 320 in the instant of stall.

[0050] In practical application, the locking module 400 is configured as a fall arrestor. There are four fall arrestors, which are progressive clamping mechanisms installed on the base 120. The clamping ports of the fall arrestors are located inside the shaft 121. The shape of the clamping ports of the fall arrestors is adapted to the cross-section of the guide rail 320. During normal lifting, the fall arrestors are in the released state. When the hoisting module 200 malfunctions and causes the cage module 300 to stall and fall, the fall arrestors can be triggered at a specific position to firmly grip the guide rail 320, thereby achieving locking.

[0051] The specific position mentioned above refers to the position where the locking part 322 is located. The locking part 322 is locked above the clamping port, so that the ladder cage module 300 will not continue to descend.

[0052] This embodiment integrates the guide rail 320 with the fall arrestor, providing active and physical fall protection during the lifting process. Even if the steel wire rope 222 breaks, the fall arrestor can lock instantly, fundamentally eliminating the major risk of the ladder cage module 300 falling from a height and ensuring the safety of construction personnel. At the same time, the guide rail 320 eliminates the possibility of component swaying, making high-altitude alignment and connection operations safer.

[0053] Please see Figure 7 In some embodiments, the foundation pit construction lifting equipment 10 further includes a support module 500, which is fixedly connected to a fixed module 100. When the ladder cage module 300 is stopped at a preset position, the support module 500 is also detachably connected to the ladder cage module 300.

[0054] When there is only one support module 500, the support module 500 is placed on the topmost fixed module 100. When the number of support modules 500 is the same as the number of fixed modules 100, one support module 500 is placed on one fixed module 100, that is, one support module 500 is installed on each fixed module 100.

[0055] Please refer to 7 to Figure 9 The support module 500 includes a first connecting frame 510, a second connecting frame 520, a third connecting frame 530, a diagonal brace 540, a first connecting piece 550, and a second connecting piece 560.

[0056] The first connecting frame 510 is fixedly connected to the fixed module 100, the second connecting frame 520 is spaced apart from the first connecting frame 510, the third connecting frame 530 is fixedly connected to the first connecting frame 510 and the second connecting frame 520 respectively, and multiple inclined bracing members 540 are spaced apart, and each inclined bracing member 540 is fixedly connected to the first connecting frame 510 and the second connecting frame 520 respectively.

[0057] The first connecting piece 550 is fixedly connected to the second connecting frame 520 and the ladder cage module 300 respectively. The two second connecting pieces 560 are symmetrically arranged with the line connecting the first connecting piece 550 and the ladder cage module 300 as the axis of symmetry. The second connecting piece 560 is fixedly connected to the second connecting frame 520, and the second connecting piece 560 is fixed to the ladder cage module 300 by anchor cable 570.

[0058] The first connecting frame 510 includes three steel pipes, which are defined as the first steel pipe 511, the second steel pipe 512 and the third steel pipe 513 respectively. The first steel pipe 511 is perpendicularly adjacent to the second steel pipe 512, the second steel pipe 512 is perpendicularly adjacent to the third steel pipe 513, and the third steel pipe 513 is opposite to the first steel pipe 511. After the three steel pipes are connected, they form an opening for the fixing module 100 and the ladder cage module 300 to be inserted.

[0059] The structure of the second connecting frame 520 is similar to that of the first connecting frame 510. The second connecting frame 520 also includes three steel pipes, which are defined as the first steel pipe 521, the second steel pipe 522 and the third steel pipe 523 respectively. The opening area of ​​the second connecting frame 520 is larger than that of the first connecting frame 510. Therefore, when the diagonal bracing 540 connects the first steel pipe 511 of the first connecting frame 510 and the first steel pipe 521 of the second connecting frame 520 respectively, the diagonal bracing 540 is in an inclined state.

[0060] The first connecting frame 510 is provided with a connecting seat 580, the second connecting frame 520 is provided with a mounting seat 590, and the diagonal tie 540 is configured as a connecting rod, with one end of the connecting rod installed on the connecting seat 580 and the other end of the connecting rod installed on the mounting seat 590.

[0061] A set of inclined tie structures consists of a connecting seat 580, a mounting seat 590, and an inclined tie member 540. In this embodiment, multiple sets of inclined tie structures are provided. The multiple sets of inclined tie structures are divided into two rows. One row of inclined tie structures is connected to the first steel pipe 511 and the first steel pipe 521 respectively, and the other row of inclined tie structures is connected to the third steel pipe 513 and the third steel pipe 523 respectively.

[0062] In addition, the second connecting frame 520 is also connected and fixed to the support structure 20 by fasteners, that is, the end of the first steel pipe 521 away from the second steel pipe 522 is fastened to the support structure 20, and the end of the third steel pipe 523 away from the second steel pipe 522 is fastened to the support structure 20.

[0063] The first connector 550 includes a support connecting plate 551 and a docking support seat 552. The support connecting plate 551 is fixedly connected to the third connecting frame 530, and the docking support seat 552 is disposed on the support connecting plate 551 and is fixedly connected to the ladder cage module 300.

[0064] Please see Figure 7 and Figure 10 The second connecting member 560 includes a first connecting seat 561, a second connecting seat 562, a support frame 563, and a fastening docking frame 564. The second connecting seat 562 is fixedly connected to the first connecting seat 561 along a first direction. The support frame 563 is fixedly connected to the second connecting seat 562 along a second direction perpendicular to the first direction. The fastening docking frame 564 is fixedly connected to the support frame 563 and is also fixedly connected to the bottom of the ladder cage module 300. The first connecting seat 561 is provided with a roller. One end of the anchor cable 570 is wound around the roller, and the other end of the anchor cable 570 is stretched to the docking pin sleeve 360 ​​of the ladder cage module 300. Through the above design, the ladder cage module 300 is lifted by the anchor cable 570.

[0065] The extension length of the anchor cable 570 can be flexibly adjusted according to the distance between the cage module 300 and the second connector 560. Therefore, the anchor cable 570 improves the applicability of the support module 500. Furthermore, the anchor cable 570 has a certain degree of elasticity, providing good flexible support for the cage module 300, which is beneficial for unloading.

[0066] Please see Figure 9 and Figure 10 The first connecting seat 561 and the second connecting seat 562 together define the limiting groove 560a. The limiting groove 560a is adapted to the shape of the first steel pipe 521. When the first connecting seat 561, the second connecting seat 562 and the first steel pipe 521 are fixed, the first steel pipe 521 is placed in the limiting groove 560a.

[0067] Please continue reading. Figure 7 In this embodiment, the support module 500 fixes the support structure 20, the fixing module 100 and the ladder cage module 300, which improves the overall integrity of the foundation pit construction lifting equipment 10, making it more stable and reliable. Moreover, the support module 500 uses various fixing methods such as bolting, welding and anchoring to achieve connections in different dimensions, which disperses the load of the support structure 20 and avoids the occurrence of foundation pit instability and deformation.

[0068] In this embodiment, the support module 500 enables multi-point support of the ladder cage module 300, improving the connection stability of the ladder cage module 300. This provides support and fixation for the ladder cage module 300 from multiple directions. Furthermore, the anchor cable 570 uses a flexible connection to connect the ladder cage module 300 and the support module 500, preventing the ladder cage module 300 from shaking.

[0069] This application uses a fixed module 100 as the main load-bearing unit to transfer the load of the foundation pit construction lifting equipment 10 to the foundation pit support structure 20. Furthermore, this application integrates the hoisting module 200 into the foundation pit lifting equipment, eliminating the need for additional large hoisting equipment. This avoids the additional load of large hoisting equipment on the soft foundation at the edge of the foundation pit, making it suitable for foundation pit construction in space-constrained areas. It improves the installation safety factor, ensures installation accuracy and efficiency, and protects the shape of the foundation pit and the foundation.

[0070] Please refer to the following: Figure 11 Referring to the following figures, based on the above content, this embodiment also provides a method for using the foundation pit construction lifting device 10, the method of use including: Please see Figure 1 and Figure 3 .

[0071] S100. Multiple fixed modules 100 are constructed along the first direction on the support structure 20 of the foundation pit.

[0072] Based on the depth of the foundation pit or the construction height, the total height of multiple fixed modules 100 and the spacing between adjacent fixed modules 100 should be reasonably designed. Each spacing should be less than the standard height of the ladder cage module 300 to ensure that when the ladder cage module 300 switches to the next fixed module 100, the fixed module 100 remains connected to the previous fixed module 100 to prevent the ladder cage module 300 from detaching from the shaft 121.

[0073] The construction steps for each fixed module 100 include: first fixing the base 120 of the fixed module 100 above the two cantilever beams 110, and then embedding the cantilever beams 110 into the support structure 20.

[0074] Please see Figure 2 and Figure 5 The construction steps for each fixed module 100 also include: before pre-embedding, first install the locking module 400 on the base 120, and set the clamping port of the locking module 400 in the well 121. During installation, the locking module 400 is configured to be in the loose state, and the clamping port is used as the sliding groove of the guide rail 320.

[0075] In this embodiment, four locking modules 400 are respectively installed at the four corner positions of the base 120.

[0076] Please see Figure 7 .

[0077] S200. Install the hoisting module 200 on the topmost fixed module 100.

[0078] Since the topmost fixed module 100 is close to the top of the pit and is pre-embedded in the support structure 20, when installing the hoisting module 200, the hoisting module 200 can be moved directly from the top of the pit to the topmost fixed module 100 for assembly, improving the moving efficiency and saving assembly time.

[0079] After the hoisting module 200 is installed, the support module 500 can be prefabricated and assembled. Then, the support module 500 is lifted by the hoisting module 200 to the fixed module 100 for connection and fixation, and the support module 500 is fixed to the support structure 20. The setting of the support module 500 greatly improves the hoisting capacity of the foundation pit construction lifting equipment 10 and ensures construction safety.

[0080] Please see Figure 7 and Figure 8 The fixing of the support module 500 and the fixing module 100 includes fixing the first connecting frame 510 and the cantilever beam 110 with bolts.

[0081] S300. Prefabricate the ladder cage module 300 and place the ladder cage module 300 at the bottom of the pit, and place the first ladder cage module 300 below the fixed module 100.

[0082] Based on the depth of the foundation pit or the construction height, the ladder cage module 300 is used as the standard section. The standard section has a standard height, thereby calculating the number of ladder cage modules 300. A preset number of ladder cage modules 300 are prefabricated and can be reused in subsequent construction.

[0083] S400. Start the hoisting module 200, lower the hoisting point to the bottom of the pit, and connect the hoisting point to the first ladder cage module 300.

[0084] The hoisting personnel stand in a safe area at the bottom of the pit and use a wireless remote control to control the lifting and lowering of the hoisting module 200. Under the premise of ensuring safety, they can clearly observe the operating status of the ladder cage module 300.

[0085] Before lifting the cage module 300, the pre-installed support module 500 can be placed inside the cage module 300. During the assembly stage, the cage module 300 can be used as a lifting device to realize the self-transportation of installation materials.

[0086] S500. Raise the first ladder cage module 300 to the preset position and fix the first ladder cage module 300.

[0087] Taking the position of the topmost fixed module 100 as the first preset position, the first ladder cage module 300 is raised to the first preset position and locked by the locking module 400. At this time, the first ladder cage module 300 is in a fixed state, and the construction personnel can carry out construction within the fixed ladder cage module 300. For ease of description and understanding, the topmost ladder cage module 300 is defined as the first layer ladder cage module 300, and from top to bottom, they are the second layer, the third layer, and so on. Similarly, the topmost fixed module 100 is defined as the first layer fixed module 100, and from top to bottom, they are the second layer, the third layer, and so on.

[0088] Please see Figure 7 , Figure 9 and Figure 10 In addition to the locking function of the locking module 400, the support module 500 and the cage module 300 can also be fixedly connected, thereby improving the reliability and stability of this embodiment.

[0089] Please see Figure 7 , Figure 10 and Figure 11 The fixing of the support module 500 and the cage module 300 includes: taking the pre-installed support module 500 out of the cage module 300, then fixing the fastening docking bracket 564 to the bottom of the cage module 300 with bolts, stretching the anchor cable 570 to the docking pin sleeve 360 ​​for fixing, and fixing the docking support seat 552 to the cage module 300.

[0090] Alternatively, the support module 500 that has not been pre-installed can be raised to a preset position and then pre-installed and fixed to the support module 500 within the fixed cage module 300.

[0091] Please see Figure 4 and Figure 7 .

[0092] S600. Repeat the above steps and continue to lift the ladder cage module 300 one by one until the next lifted ladder cage module 300 is connected to the previous fixed ladder cage module 300.

[0093] Each ladder cage module 300 is locked by a locking module 400 after docking. The ladder cage system is formed by connecting the first ladder cage module 300 downwards. Construction workers can move to different floors through the stairs 350 inside the ladder cage module 300.

[0094] If there is only one support module 500, it only needs to be installed on the topmost fixed module 100. If there are multiple support modules 500, one support module 500 is installed on each fixed module 100.

[0095] S700. Use fasteners to quickly connect the subsequently lifted ladder cage module 300 to the previously fixed ladder cage module 300.

[0096] Construction workers stand inside the first fixed ladder cage module 300 and connect the second raised ladder cage module 300 to the first fixed ladder cage module 300 using pins or high-strength bolts, so that the ladder cage system forms a whole, which has better load-bearing capacity and is not easy to collapse.

[0097] After multiple ladder cage modules 300 are fixed, the next fixed ladder cage module 300 is located below the previous fixed ladder cage module 300, and the second construction platform 340 of the next fixed ladder cage module 300 is close to the first construction platform 330 of the previous fixed ladder cage module 300. Construction personnel can move between different ladder cage modules 300 for construction via stairs 350.

[0098] While installing the subsequent ladder cage module 300, the previously fixed ladder cage module 300 can be installed simultaneously, shortening the construction cycle and improving construction efficiency.

[0099] Once all the ladder cage modules 300 are installed, the lowest ladder cage module 300 is connected to the ground. Construction workers can climb onto the ladder cage module 300 via the stairs 350, or return to the ground from the ladder cage module 300 via the stairs 350.

[0100] S800. After construction is completed, retain the hoisting module 200, the top fixed module 100, and the ladder cage module 300. Lower the ladder cage module 300 one by one from bottom to top. Use the top ladder cage module 300 as the construction space to remove the fixed module 100 one by one from bottom to top. Finally, remove the hoisting module 200 and the top fixed module 100.

[0101] The steps for dismantling the support module 500 and the ladder cage module 300 include: dismantling the bottom support module 500 and storing it inside the bottom ladder cage module 300; transferring the bottom ladder cage module 300; dismantling the second-to-last support module 500 and storing it inside the second-to-last ladder cage module 300; connecting the second-to-last ladder cage module 300 to the hoisting module 200 and lowering the second-to-last ladder cage module 300; after the second-to-last ladder cage module 300 reaches the ground, transferring the second-to-last ladder cage module 300; and repeating this process until all ladder cage modules 300 except the top ladder cage module 300 are dismantled.

[0102] The dismantling steps of the fixed module 100 include: using the hoisting module 200 to lower the top layer of the ladder cage module 300 to the distance of the third layer of fixed modules 100, and fixing it with the locking module 400; using the second construction platform 340 inside the ladder cage module 300 as the construction space; dismantling the second layer of fixed modules 100; retracting the second layer of fixed modules 100 into the ladder cage module 300; lowering it to the fourth layer of fixed modules 100; and dismantling the third layer of fixed modules 100 after locking it. This process is repeated until all fixed modules 100 except the top layer of fixed modules 100 are dismantled.

[0103] In this embodiment, the hoisting module 200 is used to lift the fixed modules 100 located below through a retained ladder cage module 300, thereby improving construction efficiency and realizing self-transportation.

[0104] Understandably, the cantilever beam 110 embedded in the support structure 20 improves the stability and reliability of the foundation pit by removing the part outside the support structure 20 and keeping the embedded part inside the support structure 20.

[0105] Finally, the hoisting module 200 and the topmost fixing device were removed sequentially from the top of the pit.

[0106] In summary, this application can realize the self-transportation function of assembly and the self-lifting function of construction, without the need for additional large hoisting equipment throughout the process, which has superior economic value and flexible and effective construction.

[0107] Since the method of using the foundation pit construction lifting equipment 10 provided in this embodiment includes the foundation pit construction lifting equipment 10, this embodiment possesses all the advantages of the foundation pit construction lifting equipment 10. The installation and use process of this embodiment has the advantages of standardization and integration, which greatly shortens the installation cycle, frees up large lifting equipment such as tower cranes, optimizes the allocation of project resources, eliminates the need for large equipment shifts, and reduces construction costs.

[0108] This embodiment achieves a stable and reliable connection with the foundation pit through the combined design of the cantilever beam 110 and the base 120. The hoisting module 200 and the locking module 400 are integrated on the base 120. The hoisting module 200 provides power to pull the cage module 300 up and down along the extension direction of the guide rail 320. In addition, this embodiment utilizes the cooperation between the guide rail 320 and the locking module 400 to achieve full guidance and instantaneous locking during the lifting process, thereby giving the cage module 300 the ability to "self-lift" and the characteristic of "intrinsic safety".

[0109] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0110] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A foundation pit construction lifting device, characterized in that, The system includes a fixing module, a hoisting module, and a cage module. Multiple fixing modules are spaced apart along a first direction. Each fixing module is fixedly connected to the support structure of the foundation pit and is provided with a shaft. The hoisting module is installed on the uppermost fixing module and is provided with a hoisting point. The hoisting point is set higher than the fixing module. At least one cage module is slidably connected to the shaft along the first direction, and the cage module is adapted to stop at a preset position in the shaft.

2. The foundation pit construction lifting equipment as described in claim 1, characterized in that, Each of the ladder cage modules includes a frame body, guide rails, a first construction platform, a second construction platform, and a staircase. Each guide rail is arranged on the frame body along a first direction, and the guide rails of adjacent ladder cage modules are connected along the first direction. The first construction platform is located at one end of the frame body, and the second construction platform is located at the other end of the frame body. The staircase connects the second construction platform and the first construction platform respectively. The second construction platform of the lower ladder cage module coincides with the first construction platform of the upper ladder cage module.

3. The foundation pit construction lifting equipment as described in claim 2, characterized in that, It also includes a locking module. Each guide rail includes a body and a locking part. The locking part protrudes radially from the body. The locking module is provided with a clamping port. The clamping port has a first width and a second width. The first width is smaller than the width of the locking part, and the second width is larger than the width of the locking part. When the clamping port is at the first width, the locking part cooperates with the clamping port to stop the ladder cage module. When the clamping port is at the second width, the clamping port releases the locking part to release the ladder cage module.

4. The foundation pit construction lifting equipment as described in any one of claims 1 to 3, characterized in that, It also includes a support module, one of which is fixedly connected to one of the fixing modules, and when the ladder cage module is stopped at the preset position, one of the support modules is also detachably connected to the ladder cage module.

5. The foundation pit construction lifting equipment as described in claim 4, characterized in that, The support module includes a first connecting frame, a second connecting frame, a third connecting frame, diagonal bracing members, a first connecting member, and a second connecting member. The first connecting frame is fixedly connected to the fixing module. The second connecting frame is spaced apart from the first connecting frame. The third connecting frame is fixedly connected to both the first and second connecting frames. Multiple diagonal bracing members are spaced apart, and each diagonal bracing member is fixedly connected to both the first and second connecting frames. The first connecting member is fixedly connected to both the second connecting frame and the ladder cage module. Two second connecting members are symmetrically arranged about the line connecting the first connecting member and the ladder cage module as an axis of symmetry. The second connecting member is fixedly connected to the second connecting frame and the ladder cage module by anchor cables.

6. The foundation pit construction lifting equipment as described in claim 5, characterized in that, The first connecting frame is provided with a connecting seat, the second connecting frame is provided with a mounting seat, the inclined tie is configured as a connecting rod, one end of the connecting rod is installed on the connecting seat, and the other end of the connecting rod is installed on the mounting seat.

7. The foundation pit construction lifting equipment as described in claim 5, characterized in that, The first connector includes a support connecting plate and a docking support base. The support connecting plate is fixedly connected to the third connecting frame, and the docking support base is disposed on the support connecting plate and fixedly connected to the ladder cage module.

8. The foundation pit construction lifting equipment as described in any one of claims 1 to 3, characterized in that, The hoisting module includes a hoisting arm and a winch. The hoisting arm is rotatably connected to the fixed module, and the winch is installed on the hoisting arm and has the hoisting point.

9. The foundation pit construction lifting equipment as described in any one of claims 1 to 3, characterized in that, The fixed module includes cantilever beams and a base. At least two cantilever beams are fixedly connected to the support structure of the foundation pit. The base is erected on the cantilever beams and the base is provided with the shaft.

10. A method of using the foundation pit construction lifting equipment as described in any one of claims 1 to 9, characterized in that, The method of use includes: Multiple fixed modules are constructed along the first direction in the support structure of the foundation pit; Install the hoisting module on the topmost fixed module; Prefabricated ladder cage modules are placed at the bottom of the pit, and the first ladder cage module is placed below the fixed module; Start the hoisting module, lower the hoisting point to the bottom of the pit, and connect the hoisting point to the first ladder cage module; Raise the first ladder cage module to a preset position and fix the first ladder cage module; Repeat the above steps, and continue to lift the ladder cage module one by one until the next lifted ladder cage module is connected to the previous fixed ladder cage module. The latter raised ladder cage module is quickly connected to the former fixed ladder cage module using fasteners. After construction is completed, retain the hoisting module, the topmost fixed module, and the ladder cage module. Lower the ladder cage modules one by one from bottom to top. Using the topmost ladder cage module as the construction space, dismantle the fixed modules one by one from bottom to top. Finally, dismantle the hoisting module and the topmost fixed module.

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