Foundation pit earthwork transfer device and method

Abstract

The application relates to the technical field of foundation pit earthwork transportation, and provides a foundation pit earthwork transfer device and method, which comprises an earth-moving vehicle, the earth-moving vehicle is provided with a separable vehicle hopper, a ring-shaped steel structure frame, a lifting drive track electrical device and a ring-shaped track. The ring-shaped steel structure frame comprises a lower force frame and an upper ring-shaped support structure, part of the upper ring-shaped support structure is located outside a foundation pit, and the other part is cantilevered above the foundation pit. The lifting drive track electrical device comprises the ring-shaped track, a drive device and a lifting appliance. The ring-shaped track is installed on the upper ring-shaped support structure. At least two drive devices are assembled on the ring-shaped track, each drive device is connected with a set of lifting appliances, the lifting appliances are connected with the vehicle hopper, and each drive device moves along the ring-shaped track. The problems of narrow site, limited space and deep foundation pit earthwork external transportation are solved. The earthwork excavation progress is not affected, the earthwork output efficiency is effectively improved, the cost is saved, and the problem of unsafe and civilized construction is reduced.

Description

Technical Field

[0001] This invention belongs to the field of foundation pit earthwork transportation technology, specifically relating to a foundation pit earthwork transfer device and method. Background Technology

[0002] With the rapid development of urban economies and the scarcity of land resources in core urban areas, more and more buildings are being designed to make full use of underground space, resulting in increasingly deeper foundation pits. Because these projects are located in the heart of the city, most deep foundation pit projects face challenges such as limited site area, restricted construction space, and the inability to construct excavation ramps or trestle bridges due to dense internal supports.

[0003] Traditional methods for excavating soil from deep foundation pits, if the site has the option to construct a winding excavation ramp, typically involve using multi-turn ramps or steel trestle bridges. However, these methods have drawbacks, such as requiring a large land area, impacting the overall excavation process, and limiting the slope ratio as it can affect efficiency. Furthermore, they can lead to uncivilized construction practices. If a winding excavation ramp is not feasible, long-arm excavators or tower cranes are used to transport the soil to the stockpile area. This approach is extremely inefficient and can significantly delay the overall construction schedule.

[0004] Therefore, given the current problems in transporting excavated soil from deep foundation pits, there is an urgent need to study a space-saving and efficient excavated soil transport device and method. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a device and method for transporting excavated soil from foundation pits, which solves the problems of low construction efficiency and large site area occupation of existing equipment or methods for transporting excavated soil from foundation pits.

[0006] In a first aspect, the present invention provides a foundation pit earthwork transfer device, comprising:

[0007] A dump truck, the dump truck being equipped with a detachable bucket, the bucket being used for loading excavated soil from the foundation pit;

[0008] A ring-shaped steel frame structure includes a lower load-bearing frame and an upper ring-shaped support structure. The lower load-bearing frame is located outside the foundation pit without a slope for excavation. The upper ring-shaped support structure is connected to the lower load-bearing frame, with a portion of the upper ring-shaped support structure located outside the foundation pit and another portion cantilevered above the foundation pit.

[0009] The lifting drive track electrical device includes a circular track, a drive unit, and a lifting device; the circular track is installed on the upper circular support structure; at least two drive units are assembled on the circular track, each drive unit is connected to a set of lifting devices and drives the lifting devices to lift and lower, the lifting devices are connected to the dump truck's bucket for lifting the bucket, and each drive unit moves independently along the circular track to realize the transfer of the bucket inside and outside the foundation pit.

[0010] Furthermore, the driving device includes a pulley, a lifting device, a transmission system, and a drive motor; the pulley cooperates with the annular track; the lifting device is connected to the lifting device, the output shaft of the drive motor is connected to the transmission system, the transmission system is connected to the pulley and is used to drive the pulley to move on the annular track, and the transmission system is also connected to the lifting device and is used to drive the lifting device to retract or release the lifting device to realize the lifting of the lifting device.

[0011] Furthermore, the drive device also includes a position limiter disposed on one side of the pulley to limit the offset of the pulley on the circular track.

[0012] Furthermore, the lifting device includes four sets of wire ropes and hooks disposed at the lower end of each set of wire ropes, the four sets of wire ropes being evenly and symmetrically distributed; the wire ropes are connected to the lifting device.

[0013] Furthermore, the dump truck has lifting lugs on both sides of its cargo bed; the hook engages with the lifting lugs.

[0014] Furthermore, the dump truck is provided with a fixing pin at the position of the lifting lug corresponding to the truck bed, and the fixing pin is inserted into the lifting lug when the truck bed is assembled on the dump truck.

[0015] Furthermore, the annular steel structure frame also includes an X-direction truss cantilever structure and a Y-direction truss cantilever structure that are welded alternately in the longitudinal and transverse directions; the X-direction truss cantilever structure and the Y-direction truss cantilever structure are respectively connected to the upper annular support structure, and the X-direction truss cantilever structure and the Y-direction truss cantilever structure are also connected to the lower load-bearing frame.

[0016] Furthermore, the annular steel structure frame also includes a beam structure and a counterweight. The beam structure is configured on the upper annular support structure; the counterweight is configured on the X-direction truss cantilever structure and the Y-direction truss cantilever structure.

[0017] Furthermore, the lower load-bearing frame includes a vertical support steel structure and multiple X-direction cantilevered inclined support steel structures and multiple Y-direction cantilevered inclined support steel structures connected to the vertical support steel structure.

[0018] Secondly, the present invention proposes a method for transporting excavated soil from a foundation pit using the aforementioned excavation soil transport device, comprising the following steps:

[0019] Install the foundation pit transfer device, set the lower load-bearing frame of the ring steel structure frame of the foundation pit transfer device on the outside of the foundation pit without the soil removal ramp, and install the upper ring support structure of the ring steel structure frame on the lower load-bearing frame, so that part of it is located outside the foundation pit and the other part is cantilevered above the foundation pit.

[0020] The lifting drive rail electrical device of the foundation pit transfer device is installed on the upper ring support structure, so that part of the lifting drive rail electrical device is located outside the foundation pit and the other part of the lifting device is located inside the foundation pit.

[0021] A portion of the soil transport vehicles of the excavation pit transfer device are positioned outside the excavation pit, while the other portion are positioned inside the excavation pit.

[0022] One drive unit of the lifting drive track electrical device is used to transfer the empty dump truck's bucket after unloading soil outside the foundation pit to the dump truck without a bucket inside the foundation pit; another drive unit is used to lift and transfer the dump truck's bucket loaded with soil inside the foundation pit to the dump truck without a bucket outside the foundation pit, and so on, to realize the transfer of soil in the foundation pit.

[0023] The beneficial effects of this invention include: by installing a ring-shaped steel frame outside the foundation pit, with a portion of it cantilevered above the pit, the drive unit and lifting equipment moving along the ring track can periodically enter and leave the pit. Combined with the drive unit and lifting equipment, the dump truck's bucket can be raised and lowered, facilitating efficient transfer of excavated soil from the pit to the outside. When a certain number of dump trucks and drive units on the ring track are available, continuous transfer of excavated soil can be achieved. Furthermore, the device occupies little space, has high construction efficiency, and is easy to install and dismantle. It solves the problem of transporting excavated soil from deep foundation pits in confined spaces, not only without affecting the excavation progress but also effectively improving excavation efficiency, saving costs, and reducing unsafe and uncivilized construction issues. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the excavation and earthwork transfer device for the foundation pit of the present invention.

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of a dump truck.

[0026] Figure 3 for Figure 1 An enlarged structural diagram of the ring-shaped steel frame.

[0027] Figure 4 for Figure 3An enlarged schematic diagram of a drive unit lifting a truck bed using a set of lifting equipment.

[0028] Figure 5 for Figure 4 A schematic diagram of the drive unit and the lifting device connected to it.

[0029] Figure 6 for Figure 5 A schematic diagram of the main structure of the drive unit.

[0030] Figure 7 This is a three-dimensional structural schematic diagram of the excavation soil transfer device of the present invention from another perspective.

[0031] In the diagram, 11-dump truck; 12-cargo bed; 13-lifting lug; 14-fixing pin;

[0032] 20- Circular steel frame structure; 21- X-direction truss cantilever structure; 22- Y-direction truss cantilever structure; 23- Upper circular support structure; 24- Lower load-bearing frame; 241- X-direction cantilevered inclined support steel structure; 242- Vertical support steel structure; 243- Y-direction cantilevered inclined support steel structure; 25- Beam construction; 26- Counterweight block;

[0033] 30- Lifting drive track electrical device; 31- Hook; 32- Wire rope; 33- Drive device; 331- Pulley; 332- Position limiter; 333- Lifting device; 334- Transmission system; 335- Drive motor; 34- Circular track. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 The excavation soil transfer device shown includes: a soil transport vehicle 11, a ring-shaped steel structure frame 20, and a lifting drive track electrical device 30.

[0036] Combined with appendix Figure 1 , 2 As shown, the dump truck 11 is equipped with a detachable bucket 12, which is used to load excavated soil from the foundation pit. Lifting lugs 13 are provided on both sides of the bucket 12 of the dump truck 11. A fixing pin 14 is provided at the corresponding position of the lifting lug 13 of the bucket 12 on the dump truck 11. When the bucket 12 is mounted on the dump truck 11, the fixing pin 14 is inserted into the lifting lug 13. In this embodiment, the fixing pin 14 is vertically positioned, and the dump truck 11 and its bucket 12 are vertically separated. By making the bucket 12 of the dump truck 11 a completely detachable structure, when transferring excavated soil from the foundation pit, only the bucket 12 needs to be used to lift the soil from the foundation pit to the outside of the foundation pit, without having to lift the entire dump truck 11 containing the bucket 12, thus reducing the lifting burden and ensuring construction safety.

[0037] Combined with appendix Figure 3 As shown, the annular steel structure frame 20 includes a lower load-bearing frame 24 and an upper annular support structure 23. The lower load-bearing frame 24 is located outside the foundation pit without a slope for excavation. The upper annular support structure 23 is connected to the lower load-bearing frame 24, and a part of the upper annular support structure 23 is located outside the foundation pit, while the other part cantilevered above the foundation pit.

[0038] The ring-shaped steel frame 20 also includes multiple X-direction (transverse) truss cantilever structures and multiple Y-direction (longitudinal) truss cantilever structures welded alternately in the longitudinal and transverse directions; the X-direction truss cantilever structure 21 and the Y-direction truss cantilever structure 22 are respectively connected to the upper ring-shaped support structure 23, and the X-direction truss cantilever structure 21 and the Y-direction truss cantilever structure 22 are also connected to the lower load-bearing frame 24.

[0039] Combined with appendix Figure 3 As shown, the upper annular support structure 23 is an annular frame structure, with the ring being an elliptical ring. The upper annular support structure 23 includes a first annular support structure and a second annular support structure. The first annular support structure is positioned above the second annular support structure, and the two are connected by multiple connecting frames. These connecting frames are vertical rectangular frames, with their upper ends welded to the first annular support structure and their lower ends welded to the second annular support structure. Adjacent connecting frames are also welded together by diagonal braces. Under the action of the diagonal braces and connecting frames, the first and second annular support structures are connected as a single unit. The first annular support structure includes two horizontally arranged concentric elliptical first steel beams of different diameters. These two first steel beams are connected by the upper ends of the aforementioned connecting frames, with the upper ends of the connecting frames supporting the two first steel beams and welded together. Similarly, the second annular support structure is identical to the first annular support structure, also including two horizontally arranged concentric elliptical second steel beams of different diameters. These two second steel beams are connected by the lower ends of the aforementioned connecting frames, with the lower ends of the connecting frames supporting the two second steel beams and welded together. At this point, the upper ring support structure 23 is connected to form an overall ring-shaped steel frame structure.

[0040] There are multiple X-direction truss cantilever structures 21 and Y-direction truss cantilever structures 22, all of which are horizontal. The multiple X-direction truss cantilever structures 21 maintain a distance in the Y-direction, and the multiple Y-direction truss cantilever structures 22 maintain a distance in the X-direction. The two ends of the X-direction truss cantilever structures 21 are welded and fixed to the two ends of the upper annular support structure 23 in the length direction. The two ends of the Y-direction truss cantilever structures 22 are welded and fixed to the two ends of the upper annular support structure 23 in the width direction. The X-direction truss cantilever structures 21 and Y-direction truss cantilever structures 22 form a horizontal support skeleton, supporting the upper annular support structure 23 and serving as the main force-bearing system for the upper annular support structure 23 and the annular track 34.

[0041] The ring-shaped steel frame 20 also includes a beam structure 25 and a counterweight 26. The beam structure 25 is mounted on the upper ring-shaped support structure 23; the counterweight 26 is mounted on the X-direction truss cantilever structure 21 and the Y-direction truss cantilever structure 22. The beam structure 25 and the counterweight 26 can play a role in load-bearing balance, ensuring structural safety and construction safety.

[0042] The lower load-bearing frame 24 includes a vertical support steel structure 242 and multiple X-direction cantilevered inclined support steel structures 241 and multiple Y-direction cantilevered inclined support steel structures 243 connected to the vertical support steel structure 242.

[0043] There are multiple vertical support steel structures 242, distributed in two rows with a distance maintained between them. The top of each vertical support steel structure 242 is welded or bolted to the X-direction truss cantilever structure 21 of the annular steel frame 20. In other words, the vertical support steel structures 242 are located below the X-direction truss cantilever structure 21.

[0044] The lower end of the X-direction cantilevered inclined support steel structure 241 is connected to the vertical support steel structure 242, and the upper end of the X-direction cantilevered inclined support steel structure 241 is connected to the upper ring support structure 23; the lower end of the Y-direction cantilevered inclined support steel structure 243 is connected to the vertical support steel structure 242, and the upper end of the Y-direction cantilevered inclined support steel structure 243 is connected to the upper ring support structure 23.

[0045] The lifting drive rail electrical device 30 includes a ring track 34, a drive device 33, and a lifting device. The ring track 34 is installed on the upper ring support structure 23. As described above, the upper ring support structure 23 includes a first ring support structure and a second ring support structure. The second ring support structure includes two horizontally arranged concentric elliptical second steel beams with different diameters. The ring track 34 is installed at the lower end of the second steel beams. In other words, there are two ring tracks 34, both concentric elliptical tracks with different diameters, and the lower ends of the two second steel beams are each connected to an elliptical track.

[0046] In some embodiments, the second steel beam is an I-beam, which can be used as a circular track 34.

[0047] Combination Figure 3 , Figure 4 As shown, at least two drive units 33 are mounted on the circular track 34. Each drive unit 33 is connected to a set of lifting devices and drives the lifting devices to rise and fall. The lifting devices are connected to the truck bed 12 of the dump truck 11 for lifting the truck bed 12. Each drive unit 33 moves independently along the circular track 34 to realize the transfer of the truck bed 12 inside and outside the foundation pit.

[0048] Combination Figure 5 , Figure 6 As shown, the drive device 33 includes a pulley 331, a lifting device 333, a transmission system 334, and a drive motor 335. The pulley 331 cooperates with the circular track 34. The lifting device 333 is connected to the lifting device. The output shaft of the drive motor 335 is connected to the transmission system 334, which is connected to the pulley 331 and used to drive the pulley 331 to move on the circular track 34. The transmission system 334 is also connected to the lifting device 333 and used to drive the lifting device 333 to wind up or release the lifting device, thereby realizing the lifting of the lifting device. The lifting device 333 can adopt the principle and structure of a conventional electric winch, or it can adopt other existing technologies. This embodiment does not limit its structure.

[0049] The transmission system 334 includes cooperating transmission gears, transmission rods, rollers, and other structures. Under the action of the drive motor 335 and the transmission system 334, all lifting devices connected to the transmission system 334 are raised and lowered at the same frequency and speed, ensuring the stability of the truck bed 12 during transportation. There are four pulleys 331, with two pulleys 331 distributed on each annular track 34. Each annular track 34 provides one pulley 331, which, when connected to the transmission system 334, moves on the annular track 34 under the action of the drive motor 335. In some embodiments, there may be two drive motors 335, one connected to the pulley 331 to move the drive device 33 on the annular track 34, and the other connected to the lifting device 333 to raise and lower the lifting devices.

[0050] The drive unit 33 also includes a position limiter 332, disposed on one side of the pulley 331, for limiting the offset of the pulley 331 on the circular track 34. The position limiter 332 can be connected to the wheel frame of the pulley 331.

[0051] The lifting device includes four sets of wire ropes 32 and hooks 31 set at the lower end of each set of wire ropes 32. The four sets of wire ropes 32 are evenly and symmetrically distributed. The wire ropes 32 are connected to the lifting device 333.

[0052] The hook 31 engages with the lifting lug 13 on the truck bed 12. After the fixing pin 14 of the dump truck 11 is inserted into the lifting lug 13 of its truck bed 12, the lifting lug 13 also has space to accommodate the hook 31. After the hook 31 is manually hooked into the lifting lug 13, the hook 31 and the lifting lug 13 can be installed together. When the lifting device 333 rewinds the lifting device, the wire rope 32 winds up, the hook 31 rises, thereby lifting the truck bed 12 on the dump truck 11 and separating it from the dump truck 11. The fixing pin 14 automatically disengages from the lifting lug 13.

[0053] Conversely, when it is necessary to install the truck bed 12 on the dump truck 11, the operation is reversed. The lifting device 333 releases the lifting tool, the wire rope 32 is lowered, and the hook 31 is lowered until the truck bed 12 is placed on the dump truck 11. Before it is completely placed, the position of the truck bed 12 is adjusted so that the lifting lug 13 of the truck bed 12 is aligned with the fixing pin 14, and the fixing pin 14 is inserted into the lifting lug 13 of the truck bed 12.

[0054] In some embodiments, a horizontal locking bolt may be provided at the upper end of the fixing pin 14. After the fixing pin 14 is inserted into the lifting lug 13, the locking bolt is tightened. The locking bolt is located above the lifting lug 13 to prevent the lifting lug 13 from separating from the fixing pin 14, thus ensuring the safety of the truck bed 12 during the movement of the dump truck 11.

[0055] Based on the same inventive concept, this invention also proposes a method for transporting excavated soil from a foundation pit using a foundation pit soil transport device, comprising the following steps:

[0056] During the foundation pit support project, a foundation pit transfer device is installed. The lower load-bearing frame 24 of the ring steel structure frame 20 of the foundation pit transfer device is set on the outside of the foundation pit without a soil removal ramp. The upper ring support structure 23 of the ring steel structure frame 20 is installed on the lower load-bearing frame 24, so that part of it is located on the outside of the foundation pit and the other part is cantilevered above the foundation pit.

[0057] The lifting drive track electrical device 30 of the foundation pit transfer device is installed on the upper ring support structure 23, so that part of the lifting device 30 is located outside the foundation pit and the other part is located inside the foundation pit.

[0058] One part of the soil transport vehicles 11 of the foundation pit transfer device are positioned outside the foundation pit, and the other part of the soil transport vehicles 11 are positioned inside the foundation pit;

[0059] Using one drive device 33 of the lifting drive track electrical device 30, the empty dump truck 11 after unloading soil outside the foundation pit is transferred to the dump truck 11 without a dump truck 12 inside the foundation pit; using another drive device 33, the dump truck 11 with soil inside the foundation pit is lifted and transferred to the dump truck 11 without a dump truck 12 outside the foundation pit, and so on, to realize the transfer of soil in the foundation pit.

[0060] See appendix Figure 7 Three dump trucks 11 with empty buckets 12 are arranged outside the excavation pit and to the right of the circular track 34, and are labeled J1, J2, and J3 respectively. Three empty dump trucks 11 without buckets 12 are arranged outside the excavation pit and to the left of the circular track 34, and are labeled C1, C2, and C3 respectively. At least two dump trucks 11 are arranged inside the excavation pit, one of which is a dump truck 11 without a bucket 12 and is labeled Z1, and the other is a dump truck 11 fully loaded with soil and is labeled Z2.

[0061] Drive unit 33 along Figure 7 The circular track 34 shown moves clockwise, and the lifting drive track electrical device 30 sequentially separates the buckets 12 of the dump trucks 11 labeled J1-J3, and then sequentially connects the separated buckets 12 with the dump trucks 11 without buckets 12 labeled Z1. The dump trucks 11 with buckets 12 can then perform earthwork loading operations. When the vehicle is full of earth, it becomes a fully loaded dump truck 11, labeled Z2. The lifting drive track electrical device 30 then lifts the buckets 12 of the dump trucks 11 labeled Z2 onto the empty dump trucks 11C1-C3 without buckets 12, completing the connection between the buckets 12 and the dump trucks 11. After that, the dump trucks 11C1-C3 transport the earthwork away from the site. After unloading the earth, they travel to the next location. Figure 7 The initial position is shown. At this time, the state of the dump trucks 11 located on the left and right sides of the circular track 34 outside the foundation pit changes. The dump trucks 11 originally labeled J1, J2, and J3 become three empty dump trucks 11 without dump trucks 12, while the dump trucks 11 originally labeled C1, C2, and C3 become three empty dump trucks 11 with dump trucks 12. The drive device 33 along... Figure 7 The circular track 34 shown moves counterclockwise, repeating the above steps to achieve continuous transfer of excavated soil from the foundation pit.

[0062] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A device for transporting excavated soil from a foundation pit, characterized in that, include: A dump truck, the dump truck being equipped with a detachable bucket, the bucket being used for loading excavated soil from the foundation pit; A ring-shaped steel frame includes a lower load-bearing frame and an upper ring-shaped support structure. The lower load-bearing frame is located outside the foundation pit without a slope for excavation. The upper ring-shaped support structure is connected to the lower load-bearing frame, and a portion of the upper ring-shaped support structure is located outside the foundation pit, while the other portion cantilevered above the foundation pit. as well as The lifting drive rail electrical device includes a circular rail, a drive unit, and a lifting device; the circular rail is installed on the upper circular support structure; At least two drive units are mounted on the circular track. Each drive unit is connected to a lifting device and drives the lifting device to lift and lower. The lifting device is connected to the dump truck's bucket for lifting the bucket. Each drive unit moves independently along the circular track to realize the transfer of the dump truck's bucket inside and outside the foundation pit.

2. The excavation earthwork transfer device according to claim 1, characterized in that, The driving device includes a pulley, a lifting device, a transmission system, and a drive motor; the pulley cooperates with the circular track; the lifting device is connected to the lifting device, the output shaft of the drive motor is connected to the transmission system, the transmission system is connected to the pulley, and is used to drive the pulley to move on the circular track. The transmission system is also connected to the lifting device, and is used to drive the lifting device to retract or release the lifting device to realize the lifting of the lifting device.

3. The excavation earthwork transfer device according to claim 2, characterized in that, The drive device also includes a position limiter disposed on one side of the pulley to limit the amount of offset of the pulley on the circular track.

4. The excavation earthwork transfer device according to claim 2, characterized in that, The lifting device includes four sets of wire ropes and hooks at the lower end of each set of wire ropes. The four sets of wire ropes are evenly and symmetrically distributed. The wire ropes are connected to the lifting device.

5. The excavation earthwork transfer device according to claim 4, characterized in that, The dump truck has lifting lugs on both sides of its cargo bed; the hook engages with the lifting lugs.

6. The excavation and earthwork transfer device for foundation pits according to claim 5, characterized in that, The dump truck is provided with a fixing pin at the position of the lifting lug corresponding to the truck bed, and the fixing pin is inserted into the lifting lug when the truck bed is assembled on the dump truck.

7. The excavation earthwork transfer device according to claim 1, characterized in that, The annular steel structure frame also includes an X-direction truss cantilever structure and a Y-direction truss cantilever structure that are welded alternately in the longitudinal and transverse directions; the X-direction truss cantilever structure and the Y-direction truss cantilever structure are respectively connected to the upper annular support structure, and the X-direction truss cantilever structure and the Y-direction truss cantilever structure are also connected to the lower load-bearing frame.

8. The excavation earthwork transfer device according to claim 7, characterized in that, The annular steel structure frame also includes a beam structure and a counterweight. The beam structure is configured on the upper annular support structure; the counterweight is configured on the X-direction truss cantilever structure and the Y-direction truss cantilever structure.

9. The excavation earthwork transfer device according to claim 1, characterized in that, The lower load-bearing frame includes a vertical support steel structure and multiple X-direction cantilevered inclined support steel structures and multiple Y-direction cantilevered inclined support steel structures connected to the vertical support steel structure.

10. A method for transporting excavated soil from a foundation pit using the excavation soil transport device as described in claim 1, characterized in that, Includes the following steps: Install the foundation pit transfer device, set the lower load-bearing frame of the ring steel structure frame of the foundation pit transfer device on the outside of the foundation pit without the soil removal ramp, and install the upper ring support structure of the ring steel structure frame on the lower load-bearing frame, so that part of it is located outside the foundation pit and the other part is cantilevered above the foundation pit. The lifting drive rail electrical device of the foundation pit transfer device is installed on the upper ring support structure, so that part of the lifting drive rail electrical device is located outside the foundation pit and the other part of the lifting device is located inside the foundation pit. A portion of the soil transport vehicles of the excavation pit transfer device are positioned outside the excavation pit, while the other portion are positioned inside the excavation pit. Using one of the drive devices of the lifting drive track electrical device, the empty dump truck after unloading soil outside the foundation pit is transferred to the empty dump truck inside the foundation pit. Another drive device is used to lift and transfer the dump truck loaded with soil inside the foundation pit to a dump truck without a dump truck outside the foundation pit. This process is repeated to achieve the transfer of soil from the foundation pit.

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