Soil lifting system and soil lifting method for building deep foundation pit construction in narrow area

Abstract

The invention belongs to the technical field of earth excavation construction, and particularly relates to a soil lifting system and method for building deep foundation pit construction in a narrow area, the soil lifting system comprises a bearing part, a lifting mechanism is arranged above the bearing part, a soil lifting mechanism is arranged at the movable end of the lifting mechanism, the soil lifting mechanism extends into a foundation pit, and a clamping mechanism is further arranged on the bearing part. The clamping mechanism and the soil lifting mechanism are correspondingly arranged; the soil lifting mechanism comprises a power assembly, at least one connecting assembly and a soil lifting assembly which are sequentially arranged from top to bottom, the power assembly is detachably connected with the connecting assembly, the soil lifting assembly is detachably connected with the connecting assembly, the power assembly is in transmission connection with the soil lifting assembly through the connecting assembly, and the clamping mechanism is used for clamping and fixing the connecting assembly. According to the scheme, continuous unearthing can be achieved, and the construction efficiency of the foundation pit is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of earth excavation construction, and in particular relates to an earth lifting system and an earth lifting method for deep foundation pit construction in a narrow area. Background Art

[0002] In the construction of deep foundation pit projects of circular buildings with narrow construction space, we usually face the problems of small site, large internal support area, small clear distance between supports, difficulty in excavating the earth below the supports, and inability to complete earth excavation by slope reduction in the conventional way.

[0003] Although the prior art discloses a soil lifting system and soil lifting method for deep foundation pit construction in a narrow area, the soil lifting system and soil lifting method work in an intermittent manner and cannot achieve continuous soil lifting, which affects work efficiency.

[0004] Therefore, a soil lifting system and soil lifting method for deep foundation pit construction in narrow areas are proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a soil lifting system and soil lifting method for deep foundation pit construction in narrow areas to solve the above problems.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A soil lifting system for deep foundation pit construction in narrow areas, comprising: a bearing part, a lifting mechanism is arranged above the bearing part, a soil lifting mechanism is arranged at the movable end of the lifting mechanism, the soil lifting mechanism extends into the foundation pit, a clamping mechanism is also arranged on the bearing part, and the clamping mechanism is arranged corresponding to the soil lifting mechanism;

[0008] The soil lifting mechanism includes a power assembly, at least one connecting assembly and a soil lifting assembly arranged in sequence from top to bottom, the power assembly is detachably connected to the connecting assembly, the soil lifting assembly is detachably connected to the connecting assembly, the power assembly and the soil lifting assembly are transmission-connected via the connecting assembly, and the clamping mechanism is used to clamp and fix the connecting assembly.

[0009] Preferably, the bearing portion comprises a bearing plate, and vertically arranged legs are fixedly connected to four corners of the bottom surface of the bearing plate, and a plurality of the legs are fixed on the ground.

[0010] Preferably, the lifting mechanism includes at least three vertically arranged sliding rods, a mounting plate is slidably connected between the plurality of sliding rods, a top plate is fixedly connected between the top ends of the plurality of sliding rods, a lifting motor is fixedly connected to the top surface of the top plate, a first bevel gear is coaxially fixedly connected to the output shaft of the lifting motor, the first bevel gear is meshed with a second bevel gear, the second bevel gear is coaxially fixedly connected to a screw, the screw is vertically arranged, the screw is rotatably connected between the top plate and the bearing plate, and the screw is threadedly connected to the mounting plate.

[0011] Preferably, the power assembly includes a soil-lifting motor fixedly connected to the top surface of the mounting plate, the output shaft of the soil-lifting motor passes through the bottom surface of the mounting plate and is coaxially fixed with a second plug connector, the bottom surface of the mounting plate is fixedly connected to an output tube, the output tube is coaxially arranged with the output shaft of the soil-lifting motor, one side of the output tube is fixedly connected and connected to a delivery pipe, the delivery pipe is arranged at an end away from the output tube and is inclined downward, and a first connecting section is arranged at the bottom end of the output tube.

[0012] Preferably, the connecting assembly includes a connecting tube, a second bracket is fixedly connected to the inner side wall of the connecting tube, a second bearing is fixedly connected to the second bracket, a connecting rod is rotatably connected to the second bearing, the connecting rod is coaxially arranged with the connecting tube, a second connecting sleeve is fixedly connected to the top end of the connecting tube, the top end of the second connecting sleeve extends out of the connecting tube and is detachably connected to the first connecting section, a second limiting connecting hole is opened at the top end of the connecting rod, the second plug connector is inserted into the second limiting connecting hole, a second connecting section is provided at the bottom end of the connecting tube, and the bottom end of the connecting rod is coaxially fixed with the first plug connector.

[0013] Preferably, the soil lifting assembly includes a sleeve, a first connecting sleeve is fixedly connected to the top end of the sleeve, the first connecting sleeve is detachably connected to the second connecting section, a first bracket is fixedly connected inside the sleeve, a first bearing is fixedly connected to the first bracket, a rotating rod is rotatably connected to the first bearing, the rotating rod is coaxially arranged with the sleeve, a first limiting connecting hole is opened at the top end of the rotating rod, the first plug connector is inserted into the first limiting connecting hole, an auger blade is coaxially fixedly connected to the outer side of the rotating rod, the auger blade is in sliding contact with the inner wall of the sleeve, and the bottom end of the auger blade extends out of the sleeve;

[0014] The sleeve is fixedly connected with a storage barrel through a plurality of fixing rods, and the storage barrel is sleeved on the bottom end of the sleeve.

[0015] Preferably, the clamping mechanism includes two symmetrically arranged clamping blocks, the clamping blocks are adapted to the connecting tube, both ends of the clamping block are respectively threadedly connected with a bidirectional threaded rod, the two bidirectional threaded rods are arranged in parallel, the two clamping blocks are respectively arranged at both ends of the bidirectional threaded rod and have opposite movement directions, the bidirectional threaded rod is rotatably connected to the bearing plate through an axle seat, one end of the bidirectional threaded rod passes through the axle seat and is coaxially fixed with a third bevel gear, the third bevel gear is meshed with a fourth bevel gear, the two fourth bevel gears are coaxially fixed to the transmission rod, the transmission rod is rotatably connected to the bearing plate through the axle seat, one end of the transmission rod passes through the axle seat and is coaxially fixed with a handwheel.

[0016] A soil lifting method for deep foundation pit construction in a narrow area, based on the soil lifting system for deep foundation pit construction in a narrow area, comprises the following steps:

[0017] The bearing part is erected above the foundation pit, the soil lifting assembly is fixed on the bearing part through the clamping mechanism, the power assembly is lifted to the highest point through the lifting mechanism, the soil lifting assembly and the power assembly are connected through the connecting assembly, and the clamping mechanism is released. At this time, as the foundation pit is excavated, the lifting mechanism drives the soil lifting mechanism to descend, and soil is continuously lifted;

[0018] When the lifting mechanism descends to its limit, the connecting assembly is fixed by the clamping mechanism, the lifting mechanism is lifted to the highest point, the power assembly and the previous connecting assembly are connected by another connecting assembly, and the clamping mechanism is released. As the foundation pit is excavated, the lifting mechanism drives the soil lifting mechanism to descend, and the soil is continuously lifted. This is repeated many times until the foundation pit is excavated to the specified depth.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] The soil lifting system and soil lifting method for deep foundation pit construction in a narrow area of ​​the present invention can realize the transportation of soil to the outside of the foundation pit when constructing a deep foundation pit with a narrow construction space, thereby solving the technical problems of small site, large internal support area, small net distance between supports, difficult excavation of soil below the support, few excavation paths, and inability to complete earth excavation by slope reduction in a conventional manner; at the same time, the scheme of the present invention can realize continuous excavation, further improving the construction efficiency of the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0022] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 3 It is a schematic diagram of the structure of the storage barrel in the present invention;

[0025] Figure 4 It is a structural schematic diagram of the clamping mechanism in the present invention;

[0026] Among them, 1. support leg; 2. load-bearing plate; 3. sliding rod; 4. mounting plate; 5. limit block; 6. top plate; 7. lifting motor; 8. first bevel gear; 9. second bevel gear; 10. screw; 11. soil lifting motor; 12. conveying pipe; 13. output tube; 14. connecting tube; 15. fixing rod; 16. storage barrel; 18. sleeve; 19. auger blade; 20. first bracket; 21. first connecting sleeve; 22. rotating rod; 23. first limit connecting hole; 24. first bearing; 25. second connecting sleeve; 26. connecting rod; 27. second bracket; 28. second bearing; 29. ​​second limit connecting hole; 30. second plug connector; 31. first plug connector; 32. clamping block; 33. hand wheel; 34. two-way threaded rod; 35. third bevel gear; 36. fourth bevel gear; 37. transmission rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figures 1 to 4 The present invention discloses a soil lifting system for deep foundation pit construction in narrow areas, comprising: a bearing part, a lifting mechanism is arranged above the bearing part, a soil lifting mechanism is arranged at the movable end of the lifting mechanism, the soil lifting mechanism extends into the foundation pit, a clamping mechanism is also arranged on the bearing part, and the clamping mechanism and the soil lifting mechanism are arranged correspondingly;

[0030] The soil lifting mechanism includes a power component, at least one connecting component and a soil lifting component which are arranged in sequence from top to bottom. The power component and the connecting component are detachably connected, the soil lifting component and the connecting component are detachably connected, the power component and the soil lifting component are transmission connected via the connecting component, and the clamping mechanism is used to clamp and fix the connecting component.

[0031] According to a further optimized solution, the bearing part includes a bearing plate 2, and vertically arranged legs 1 are fixedly connected to four corners of the bottom surface of the bearing plate 2, and the plurality of legs 1 are fixed on the ground.

[0032] A further optimized solution is that the lifting mechanism includes at least three vertically arranged sliding rods 3, a mounting plate 4 is slidably connected between the multiple sliding rods 3, a top plate 6 is fixed between the top ends of the multiple sliding rods 3, a lifting motor 7 is fixed to the top surface of the top plate 6, a first bevel gear 8 is coaxially fixed to the output shaft of the lifting motor 7, the first bevel gear 8 is meshed with a second bevel gear 9, the second bevel gear 9 is coaxially fixed with a screw 10, the screw 10 is vertically arranged, the screw 10 is rotatably connected between the top plate 6 and the bearing plate 2, and the screw 10 is threadedly connected to the mounting plate 4.

[0033] A limit block 5 is fixedly connected to the slide bar 3. The limit block 5 is located above the mounting plate 4. The distance between the limit block 5 and the top plate 6 is greater than the height of the soil lifting motor 11 to prevent the soil lifting motor 11 from colliding with the top plate.

[0034] A further optimized solution is that the power assembly includes a soil lifting motor 11 fixedly connected to the top surface of the mounting plate 4, the output shaft of the soil lifting motor 11 passes through the bottom surface of the mounting plate 4 and is coaxially fixed with a second plug connector 30, the bottom surface of the mounting plate 4 is fixedly connected to an output tube 13, the output tube 13 is coaxially arranged with the output shaft of the soil lifting motor 11, one side of the output tube 13 is fixedly connected and connected to a delivery pipe 12, the end of the delivery pipe 12 away from the output tube 13 is tilted downward, and a first connecting section is arranged at the bottom end of the output tube 13.

[0035] A further optimized solution is that the connecting assembly includes a connecting tube 14, a second bracket 27 is fixedly connected to the inner side wall of the connecting tube 14, a second bearing 28 is fixedly connected to the second bracket 27, a connecting rod 26 is rotatably connected to the second bearing 28, the connecting rod 26 is coaxially arranged with the connecting tube 14, a second connecting sleeve 25 is fixedly connected to the top end of the connecting tube 14, the top end of the second connecting sleeve 25 extends out of the connecting tube 14 and is detachably connected to the first connecting section, a second limiting connecting hole 29 is opened at the top end of the connecting rod 26, a second plug connector 30 is inserted into the second limiting connecting hole 29, a second connecting section is arranged at the bottom end of the connecting tube 14, and a first plug connector 31 is coaxially fixedly connected to the bottom end of the connecting rod 26.

[0036] Further optimization scheme, the soil lifting assembly includes a sleeve 18, the top of the sleeve 18 is fixedly connected with a first connecting sleeve 21, the first connecting sleeve 21 is detachably connected to the second connecting section, a first bracket 20 is fixedly connected in the sleeve 18, a first bearing 24 is fixedly connected to the first bracket 20, a rotating rod 22 is rotatably connected to the first bearing 24, the rotating rod 22 is coaxially arranged with the sleeve 18, a first limiting connecting hole 23 is opened at the top of the rotating rod 22, a first plug connector 31 is inserted into the first limiting connecting hole 23, an auger blade 19 is coaxially fixedly connected to the outer side of the rotating rod 22, the auger blade 19 is in sliding contact with the inner wall of the sleeve 18, and the bottom end of the auger blade 19 extends out of the sleeve 18;

[0037] The sleeve 18 is fixedly connected to a storage barrel 16 via a plurality of fixing rods 15 , and the storage barrel 16 is sleeved on the bottom end of the sleeve 18 .

[0038] The connection method between the first connecting sleeve 21 and the second connecting section includes, but is not limited to, a snap connection, a pin connection, and the like.

[0039] The connection method between the second connecting sleeve 25 and the first connecting section includes, but is not limited to, a snap connection, a pin connection, and the like.

[0040] A further optimized solution is provided, wherein the clamping mechanism comprises two symmetrically arranged clamping blocks 32, the clamping blocks 32 are adapted to the connecting tube 14, and two ends of the clamping blocks 32 are respectively threadedly connected with bidirectional threaded rods 34, the two bidirectional threaded rods 34 are arranged in parallel, the two clamping blocks 32 are respectively arranged at two ends of the bidirectional threaded rod 34 and have opposite movement directions, the bidirectional threaded rod 34 is rotatably connected to the bearing plate 2 through an axle seat, one end of the bidirectional threaded rod 34 passes through the axle seat and is coaxially fixed with a third bevel gear 35, the third bevel gear 35 is meshed with a fourth bevel gear 36, and the two fourth bevel gears 36 are both coaxially fixed to a transmission rod 37, the transmission rod 37 is rotatably connected to the bearing plate 2 through an axle seat, and one end of the transmission rod 37 passes through the axle seat and is coaxially fixed with a handwheel 33.

[0041] A soil lifting method for deep foundation pit construction in a narrow area, based on a soil lifting system for deep foundation pit construction in a narrow area, comprises the following steps:

[0042] The bearing part is erected above the foundation pit, the soil lifting assembly is fixed on the bearing part through the clamping mechanism, the power assembly is lifted to the highest point through the lifting mechanism, the soil lifting assembly and the power assembly are connected through the connecting assembly, and the clamping mechanism is released. At this time, as the foundation pit is excavated, the lifting mechanism drives the soil lifting mechanism to descend, and soil is continuously lifted;

[0043] When the lifting mechanism descends to its limit, the connecting assembly is fixed by the clamping mechanism, the lifting mechanism is lifted to the highest point, the power assembly and the previous connecting assembly are connected by another connecting assembly, and the clamping mechanism is released. As the foundation pit is excavated, the lifting mechanism drives the soil lifting mechanism to descend, and the soil is continuously lifted. This is repeated many times until the foundation pit is excavated to the specified depth.

[0044] Specific usage:

[0045] First, the supporting plate 2 is erected above the hole of the foundation pit through the supporting leg 1, and the supporting leg 1 is fixed to the ground. The lifting motor 7 rotates, and the screw 10 is driven to rotate through the first bevel gear 8 and the second bevel gear 9 meshing with the first bevel gear 8. The screw 10 drives the mounting plate 4 to move upward, and the soil lifting motor 11 is lifted to the highest point. At the same time, the top of the sleeve 18 is passed through the top of the supporting plate 2 under the supporting plate 2, and the hand wheel 33 is turned. The hand wheel 33 drives the bidirectional threaded rod 34 to rotate through the fourth bevel gear 36 and the third bevel gear 35 meshing with the fourth bevel gear 36, thereby driving the clamping blocks 32 to approach each other, clamping and fixing the sleeve 18, and placing the connecting tube 14 between the sleeve 18 and the output tube 13. And connect the connecting tube 14 with the sleeve 18 and the output tube 13. At this time, the second plug connector 30 is inserted into the first limit connecting hole 23, and the second plug connector 30 is inserted into the second limit connecting hole 29 to complete the connection. The hand wheel 33 is rotated in the opposite direction, and the two clamping blocks 32 are moved away from each other to separate the sleeve 18. The lifting motor 7 rotates in the opposite direction to drive the sleeve 18 to slowly move down with the depth of excavation. When the mounting plate 4 moves down to the extreme position, the hand wheel 33 is turned to clamp and fix the connecting tube 14, and the connecting tube 14 is separated from the output tube 13. The lifting motor 7 lifts the mounting plate 4 to the highest point, and the connecting tube 14 is connected to the previous connecting tube 14 and the output tube 13. Continue working and repeat the above steps until the foundation pit is excavated to the specified depth.

[0046] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A soil lifting system for deep foundation pit construction in narrow areas, characterized in that: include: A bearing part, a lifting mechanism is arranged above the bearing part, a soil lifting mechanism is arranged at the movable end of the lifting mechanism, the soil lifting mechanism extends into the foundation pit, and a clamping mechanism is also arranged on the bearing part, the clamping mechanism is arranged corresponding to the soil lifting mechanism; The soil lifting mechanism includes a power assembly, at least one connecting assembly and a soil lifting assembly arranged in sequence from top to bottom, the power assembly is detachably connected to the connecting assembly, the soil lifting assembly is detachably connected to the connecting assembly, the power assembly and the soil lifting assembly are transmission-connected via the connecting assembly, and the clamping mechanism is used to clamp and fix the connecting assembly.

2. The soil lifting system for deep foundation pit construction in narrow areas according to claim 1 is characterized by: The bearing portion comprises a bearing plate (2), and vertically arranged supporting legs (1) are fixedly connected at four corners of the bottom surface of the bearing plate (2), and a plurality of the supporting legs (1) are fixed on the ground.

3. The soil lifting system for deep foundation pit construction in narrow areas according to claim 2 is characterized by: The lifting mechanism comprises at least three vertically arranged sliding rods (3), a mounting plate (4) is slidably connected between the plurality of sliding rods (3), a top plate (6) is fixedly connected between the top ends of the plurality of sliding rods (3), a lifting motor (7) is fixedly connected to the top surface of the top plate (6), a first bevel gear (8) is coaxially fixedly connected to the output shaft of the lifting motor (7), the first bevel gear (8) is meshed with a second bevel gear (9), the second bevel gear (9) is coaxially fixedly connected to a screw rod (10), the screw rod (10) is vertically arranged, the screw rod (10) is rotatably connected between the top plate (6) and the bearing plate (2), and the screw rod (10) is threadedly connected to the mounting plate (4).

4. The soil lifting system for deep foundation pit construction in narrow areas according to claim 3 is characterized by: The power assembly comprises a soil-lifting motor (11) fixedly connected to the top surface of the mounting plate (4); the output shaft of the soil-lifting motor (11) passes through the bottom surface of the mounting plate (4) and is coaxially fixedly connected with a second plug connector (30); the bottom surface of the mounting plate (4) is fixedly connected with an output tube (13); the output tube (13) is coaxially arranged with the output shaft of the soil-lifting motor (11); one side of the output tube (13) is fixedly connected to and communicated with a delivery pipe (12); one end of the delivery pipe (12) away from the output tube (13) is arranged to be tilted downward; and the bottom end of the output tube (13) is provided with a first connecting section.

5. The soil lifting system for deep foundation pit construction in narrow areas according to claim 4 is characterized by: The connecting assembly comprises a connecting tube (14), a second bracket (27) is fixedly connected to the inner side wall of the connecting tube (14), a second bearing (28) is fixedly connected to the second bracket (27), a connecting rod (26) is rotatably connected to the second bearing (28), the connecting rod (26) is coaxially arranged with the connecting tube (14), a second connecting sleeve (25) is fixedly connected to the top end of the connecting tube (14), the top end of the second connecting sleeve (25) extends out of the connecting tube (14) and is detachably connected to the first connecting section, a second limiting connecting hole (29) is provided at the top end of the connecting rod (26), the second plug connector (30) is inserted into the second limiting connecting hole (29), a second connecting section is provided at the bottom end of the connecting tube (14), and the first plug connector (31) is coaxially fixedly connected to the bottom end of the connecting rod (26).

6. The soil lifting system for deep foundation pit construction in narrow areas according to claim 5 is characterized by: The soil lifting assembly comprises a sleeve (18), the top end of the sleeve (18) is fixedly connected with a first connecting sleeve (21), the first connecting sleeve (21) is detachably connected to the second connecting section, a first bracket (20) is fixedly connected inside the sleeve (18), a first bearing (24) is fixedly connected to the first bracket (20), a rotating rod (22) is rotatably connected to the first bearing (24), the rotating rod (22) is coaxially arranged with the sleeve (18), a first limiting connecting hole (23) is formed at the top end of the rotating rod (22), the first plug connector (31) is inserted into the first limiting connecting hole (23), an auger blade (19) is coaxially fixedly connected to the outer side of the rotating rod (22), the auger blade (19) is in sliding contact with the inner wall of the sleeve (18), and the bottom end of the auger blade (19) extends out of the sleeve (18); The sleeve (18) is fixedly connected to a storage barrel (16) via a plurality of fixing rods (15), and the storage barrel (16) is sleeved on the bottom end of the sleeve (18).

7. The soil lifting system for deep foundation pit construction in narrow areas according to claim 5 is characterized by: The clamping mechanism comprises two symmetrically arranged clamping blocks (32), the clamping blocks (32) being adapted to the connecting tube (14), the two ends of the clamping blocks (32) being respectively threadedly connected with bidirectional threaded rods (34), the two bidirectional threaded rods (34) being arranged in parallel, the two clamping blocks (32) being respectively arranged at the two ends of the bidirectional threaded rod (34) and moving in opposite directions, the bidirectional threaded rod (34) being rotatably connected to the bearing plate (2) via an axle seat, one end of the bidirectional threaded rod (34) passing through the axle seat and being coaxially fixedly connected with a third bevel gear (35), the third bevel gear (35) being meshed with a fourth bevel gear (36), the two fourth bevel gears (36) being coaxially fixedly connected to a transmission rod (37), the transmission rod (37) being rotatably connected to the bearing plate (2) via an axle seat, one end of the transmission rod (37) passing through the axle seat and being coaxially fixedly connected with a hand wheel (33).

8. A soil lifting method for deep foundation pit construction in narrow areas, based on the soil lifting system for deep foundation pit construction in narrow areas according to any one of claims 1 to 7, characterized in that: The following steps are involved: The bearing part is erected above the foundation pit, the soil lifting assembly is fixed on the bearing part through the clamping mechanism, the power assembly is lifted to the highest point through the lifting mechanism, the soil lifting assembly and the power assembly are connected through the connecting assembly, and the clamping mechanism is released. At this time, as the foundation pit is excavated, the lifting mechanism drives the soil lifting mechanism to descend, and soil is continuously lifted; When the lifting mechanism descends to its limit, the connecting assembly is fixed by the clamping mechanism, the lifting mechanism is lifted to the highest point, the power assembly and the previous connecting assembly are connected by another connecting assembly, and the clamping mechanism is released. As the foundation pit is excavated, the lifting mechanism drives the soil lifting mechanism to descend, and the soil is continuously lifted. This is repeated many times until the foundation pit is excavated to the specified depth.

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