CN118065460A

CN118065460A - Soft soil foundation excavation device

Info

Publication number: CN118065460A
Application number: CN202410479574.5A
Authority: CN
Inventors: 邵莉钧; 王秋文; 王小元
Original assignee: Jilin Tuowei Environmental Protection Group Co ltd
Current assignee: Jilin Tuowei Environmental Protection Group Co ltd
Priority date: 2024-04-22
Filing date: 2024-04-22
Publication date: 2024-05-24
Anticipated expiration: 2044-04-22
Also published as: CN118065460B

Abstract

The invention discloses a soft soil foundation excavation device, which relates to the technical field of soft soil foundation construction and comprises a frame and a bracket fixedly arranged on the frame, wherein the bracket is fixedly arranged on the frame; the main body part comprises two first support frames fixedly mounted on the support, two rotating shafts are rotatably mounted on the first support frames, a second support frame is mounted on the two matched rotating shafts in a sliding mode, and the two support frames are in rotary connection with the corresponding rotating shafts. The advantages are that: the automatic compaction and tilting device has the advantages of automatically enlarging the contact area between the excavator and the foundation and reducing the sedimentation degree, has the advantages of reducing the sinking of the excavator frame and automatically compacting and tilting soil, enables the excavator to move more smoothly, is not required to be assisted by paving steel plates, enables the working efficiency of the excavator to be higher, can reduce the influence on other peripheral operations, and improves the efficiency of staggered construction.

Description

Soft soil foundation excavation device

Technical Field

The invention relates to the technical field of soft soil foundation construction, in particular to a soft soil foundation excavation device.

Background

Soft soil generally refers to cohesive soil in a soft plastic or plastic-flowing state with high natural water content, high compressibility, low bearing capacity and very low shear strength. Soft soil is a generic term of soil, and does not refer to a specific soil, soft soil is often subdivided into soft cohesive soil, mucky soil, silt, peat soil, peat and the like in engineering, and due to the specificity of a soft soil foundation, the soft soil has a large settlement amplitude, cannot be directly used for building bearing, a series of corresponding reinforcing operations need to be carried out on the foundation, and in the process, excavation equipment of the foundation needs to be used for assistance.

The existing excavating equipment comprises drilling equipment, excavating equipment and transportation equipment, wherein the excavating equipment is mainly an excavator, and when the existing excavator works on a soft soil foundation, the contact surface of a crawler belt and the foundation is fixed and smaller, so that the excavator is extremely easy to sink into the soft soil foundation in the working process, and before the operation, a steel plate is required to be paved on a running route of the excavator for expanding the contact surface, so that the sinking depth of the excavator is reduced;

To laying the steel sheet, can't carry out the foundation and fully spread, can only carry out the local and lay, and need change the position after the excavator work is accomplished, need the operating personnel of excavator to shift the steel sheet of laying this moment for carry out the excavation of next department, lay the steel sheet and consume time long, influence the excavation efficiency of foundation, lay the steel sheet simultaneously and still can bring the influence to other constructions on the foundation, be unfavorable for the staggered construction of foundation.

Therefore, the novel soft soil foundation excavation device can be adopted to solve the defects in the prior art.

Disclosure of Invention

The invention aims to solve the problems of low excavation efficiency and cross influence of staggered construction in the prior art, and provides a soft soil foundation excavation device.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the soft soil foundation excavation device comprises a frame and a bracket fixedly arranged on the frame;

The main body part comprises two first support frames fixedly mounted on the support, two rotating shafts are rotatably mounted on the first support frames, a second support frame is mounted on the two matched rotating shafts in a sliding mode, the two second support frames are in rotary connection with the corresponding rotating shafts, a first crawler belt is mounted on the first support frames, and a second crawler belt is mounted on the second support frames;

The support is provided with a retaining plate in a sliding manner, two storage plates are arranged on the retaining plate in a sliding manner, a movable plate is fixedly arranged on each storage plate, a lifting mechanism is arranged between the retaining plate and the support, an adjusting mechanism is arranged between the retaining plate and two support frames II, and a pushing mechanism is arranged between the retaining plate and each movable plate;

the soil pressing part comprises two baffles rotatably arranged between two first support frames, the two baffles are connected with the first support frames through shaft rods, and a linkage mechanism is arranged between the two shaft rods and corresponding rotating shafts.

In the soft soil foundation excavation device, each rotating shaft is fixedly provided with a gear III, a first chain is sleeved between the two gears III in a matched mode, the first chain is composed of a plurality of sections of small chains, each section of small chain is fixedly provided with a first backing plate, each backing plate is fixedly provided with a first track shoe, and the first track shoes are composed of a plurality of first track shoes.

In the soft soil foundation excavation device, a plurality of gears I are rotatably installed on the support frame II, wherein the gears I at two ends are in sliding connection with corresponding rotating shafts, a plurality of chains II are sleeved on the gears I together, each chain II consists of a plurality of sections of small chains II, each section of small chain II is fixedly provided with a base plate II, each base plate II is fixedly provided with an elastic telescopic rod, each elastic telescopic rod is fixedly provided with a track plate II at one end far away from the corresponding small chain II, a plurality of track plates II form a track plate II, and each track plate I and the corresponding track plate II are provided with clamping structures.

In the soft soil foundation excavation device, the clamping structure comprises a butt joint clamping groove formed in the first track plate, a butt joint clamping plate matched with the butt joint clamping groove is fixedly arranged on the second track plate, and one end of the first track plate and one end of the second track plate matched with the first track plate are in 45-degree inclined design.

In the soft soil foundation excavation device, the lifting mechanism comprises a hydraulic cylinder fixedly installed at the bottom of the support, the driving end of the hydraulic cylinder is fixedly connected with the retaining plate, a plurality of telescopic rods are fixedly installed on the support, and one end, far away from the support, of each telescopic rod is fixedly connected with the retaining plate.

In the soft soil foundation excavation device, the adjusting mechanism comprises two wedge plates fixedly arranged on the abutting plates, two adjusting rods are fixedly arranged on the second supporting frame, two abutting wheels matched with the corresponding wedge plates are rotatably arranged on the two adjusting rods, and a reset structure is arranged between the two adjusting rods and the first supporting frame.

In the soft soil foundation excavation device, the reset structure comprises a limiting sleeve fixedly mounted on the first supporting frame, a plurality of balls propped against the adjusting rod are mounted in the limiting sleeve in a rolling manner, and a reset spring is fixedly mounted between the limiting sleeve and the adjusting rod.

In the soft soil foundation excavation device, the pushing mechanism comprises a toothed plate II fixedly mounted on the movable plate, a toothed cylinder meshed with the toothed plate II is rotatably mounted on the retaining plate, a plurality of limiting frames are fixedly mounted on the retaining plate, a toothed plate I meshed with the toothed cylinder is mounted on the limiting frames in a sliding mode, a wire roller is rotatably mounted on the retaining plate, a steel wire rope is fixedly connected onto the toothed plate I, and one end of the steel wire rope, far away from the toothed plate I, penetrates through the wire roller and is fixedly connected with the support.

In the soft soil foundation excavation device, the folding plate is installed in the one end rotation that the fly leaf was kept away from to the storage plate, the folding plate comprises a plurality of rotating plates, and is adjacent two for rotating between the rotating plate and connecting, keep out the board middle part and seted up with a plurality of rotating plate matched with storage tank, and keep out the board bottom and seted up with storage plate matched with spout.

In the soft soil foundation excavation device, the linkage mechanism comprises two groups of driving teeth fixedly mounted on the rotating shaft, the two groups of driving teeth are composed of a plurality of meshing teeth, two incomplete toothed rings are fixedly mounted on the rotating shaft, and a gear II which is meshed with the plurality of meshing teeth and the two incomplete toothed rings is fixedly mounted on the shaft rod.

Compared with the prior art, the invention has the advantages that:

1. This soft soil foundation excavation device has the advantage of automatic reduction subsidence degree in concrete use, adopts track one and track two, can enlarge the area of contact of whole track and ground, reduces the local stress point on whole track to reach the purpose of atress dispersion to the amplitude of subsidence when this greatly reduced excavator operation is convenient for the normal operation of excavator.

2. This soft soil foundation excavation device has the advantage that reduces the excavator frame subsidence in concrete use, in the excavator operation in-process, supports the pressure to the ground through the board that holds up of liftable, and the reaction force that should hold up the effort and produce can upwards hold up the pressure frame, reduces the probability that the frame falls into the ground, also can improve the stability of frame simultaneously, holds up the board simultaneously and also increases the area of contact with between the ground to reach the purpose that further reduces the subsidence range.

3. This soft soil foundation excavation device has automatic compaction perk soil in concrete use, makes the excavator remove more smooth and easy advantage, adopts indirection pivoted baffle to compact the peripheral perk soil of excavator in-process of traveling, reduces the influence that perk soil was gone to the excavator, and the compaction still can improve the bearing capacity of soil simultaneously to make the excavator travel more stable on soil.

4. This soft soil foundation excavation device has the advantage that improves the efficiency of construction in concrete use, adopts the area of contact who enlarges between excavator self and the foundation, replaces the operation of originally laying the steel sheet, reduces the required duration of traveling of excavator, improves the work efficiency of excavator, need not to lay the steel sheet simultaneously, still can reduce the influence to peripheral other operations, improves the efficiency of staggered construction.

In summary, the invention not only has the advantages of automatically expanding the contact area between the excavator and the foundation and reducing the sedimentation degree, but also has the advantages of reducing the sinking of the excavator frame and automatically compacting and tilting the soil, so that the excavator can move more smoothly, the steel plate is not required to be laid for assistance, the working efficiency of the excavator is higher, the influence on other peripheral operations can be reduced, and the staggered construction efficiency is improved.

Drawings

The invention is described in further detail below with reference to the attached drawing figures, wherein:

Fig. 1 is a schematic structural diagram of a soft soil foundation excavation apparatus according to the present invention;

FIG. 2 is a schematic detailed view of the structure after operation of FIG. 1;

FIG. 3 is a schematic detailed view of the first track, second track and barrier of FIG. 1;

FIG. 4 is a schematic detailed view of the baffle and bracket of FIG. 3;

FIG. 5 is a schematic detail view of the structure of FIG. 4 with the baffle removed and the shaft removed;

FIG. 6 is a schematic detailed view of the structure of the retaining plate and the movable plate of FIG. 5;

FIG. 7 is an enlarged schematic detail view of the first toothed plate of FIG. 6;

FIG. 8 is an enlarged schematic detail view of the shaft and the baffle of FIG. 4;

FIG. 9 is a schematic detail view of the receiving plate of FIG. 6;

FIG. 10 is a schematic detailed view of the first and second tracks of FIG. 1;

FIG. 11 is an exploded schematic detail view of FIG. 10;

FIG. 12 is a schematic detailed view of the structure after operation of FIG. 10;

FIG. 13 is a schematic detailed view of the first track and the second track of FIG. 10 after cutting;

fig. 14 is a schematic detailed view of the structure of fig. 13 after the rotation and movement angle.

In the figure: 1. a first crawler belt; 2. a second crawler belt; 3. a baffle; 4. a frame; 5. a first gear; 6. a bracket; 7. a first supporting frame; 8. a second supporting frame; 9. an adjusting rod; 10. wedge plate; 11. a pressing wheel; 12. a movable plate; 13. a retaining plate; 14. a storage plate; 15. a hydraulic cylinder; 16. a telescopic rod; 17. a toothed plate I; 18. a toothed plate II; 19. a limiting frame; 20. a tooth cylinder; 21. a wire rope; 22. a wire roller; 23. a shaft lever; 24. meshing teeth; 25. an incomplete ring gear; 26. a second gear; 27. a rotating plate; 28. a first chain; 29. a second chain; 30. a first backing plate; 31. an elastic telescopic rod; 32. a second backing plate; 33. a butt joint clamping groove; 34. a butt joint clamping plate; 35. a rotating shaft.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 14, a soft soil foundation excavation apparatus includes a frame 4, and further includes a bracket 6 fixedly installed on the frame 4;

The main body part comprises two first support frames 7 fixedly mounted on the support 6, two rotating shafts 35 are rotatably mounted on the first support frames 7, a second support frame 8 is mounted on the two matched rotating shafts 35 in a sliding manner, the two second support frames 8 are in rotary connection with the corresponding rotating shafts 35, a first crawler belt 1 is mounted on the first support frames 7, and a second crawler belt 2 is mounted on the second support frames 8;

Two driving sources are installed on the support 6, driving shafts of the two driving sources are fixedly connected with corresponding rotating shafts 35 respectively, the rotating shafts 35 are driven to rotate through the driving sources, and the two driving sources operate independently.

Referring to fig. 1-14, a gear three is fixedly installed on each rotating shaft 35, a first chain 28 is sleeved between two matched gears three, the first chain 28 is composed of a plurality of small chains, each small chain is fixedly provided with a first backing plate 30, each backing plate 30 is fixedly provided with a first track shoe, and a plurality of first track shoes form a first track 1; this section is an existing track structure, and is simply described herein with particular reference to an existing track design and is not specifically described herein.

Referring to fig. 1-14, a plurality of first gears 5 are rotatably mounted on a second support frame 8, wherein the first gears 5 positioned at two ends are in sliding connection with corresponding rotating shafts 35, a second chain 29 is sleeved on the first gears 5, the second chain 29 consists of a plurality of sections of small chains, each section of small chain is fixedly provided with a second backing plate 32, each backing plate 32 is fixedly provided with an elastic telescopic rod 31, one end of each elastic telescopic rod 31, far away from the corresponding small chain, is fixedly provided with a second track shoe, the second track shoes form a second track 2, and a clamping structure is mounted between each first track shoe and the corresponding second track shoe; this section is an existing track structure, and is simply described herein with particular reference to an existing track design and is not specifically described herein.

Referring to fig. 1-14, the clamping structure comprises a butt joint clamping groove 33 formed in a first track plate, a butt joint clamping plate 34 matched with the butt joint clamping groove 33 is fixedly arranged on a second track plate, and one end of the first track plate and one end of the second track plate matched with the first track plate adopt 45-degree inclined design;

The part of the design has the function of combining the second crawler belt 2 with the first crawler belt 1 when moving to a certain degree to form a new crawler belt with larger width, and the contact area between the crawler belt and the foundation can be enlarged, so that the purpose of reducing the sedimentation amplitude is achieved;

the effect of adopting 45 degrees designs of slope here is in order to be convenient for dock joint cardboard 34 card in docking draw-in groove 33, and the effect of elastic telescopic link 31 is in order to provide the butt-pressing effort that moves to track shoe one side for track shoe two in track shoe two removal in-process to dock joint cardboard 34 card is gone into in the docking draw-in groove 33.

Referring to fig. 1-14, a support plate 13 is slidably mounted on a bracket 6, two storage plates 14 are slidably mounted on the support plate 13, a movable plate 12 is fixedly mounted on each storage plate 14, and a lifting mechanism is mounted between the support plate 13 and the bracket 6;

the storage plate 14 and the withstanding plate 13 can be combined to form an anti-sinking plate, and the whole area of the anti-sinking plate is changed by moving the storage plate 14, so that the contact area between the anti-sinking plate and the foundation is changed, the stressed area is enlarged, and the sinking amplitude is reduced.

The folding plate is rotatably arranged at one end of the storage plate 14 far away from the movable plate 12, and consists of a plurality of rotating plates 27, wherein two adjacent rotating plates 27 are rotatably connected, a storage groove matched with the plurality of rotating plates 27 is formed in the middle of the retaining plate 13, and a sliding groove matched with the storage plate 14 is formed in the bottom of the retaining plate 13;

the effect of the rotating plate 27 is to fill the sliding groove formed in the retaining plate 13, after the storage plate 14 is prevented from moving, the sliding groove is exposed, the situation that soil blocks the sliding groove occurs, the sliding groove can be filled, the blocking probability of the sliding groove is reduced, meanwhile, the middle part of the retaining plate 13 is flush with the bottom of the storage plate 14, and therefore the integral stress of the retaining plate 13 and the storage plate 14 is facilitated, and the sedimentation amplitude is reduced.

The lifting mechanism comprises a hydraulic cylinder 15 fixedly arranged at the bottom of the bracket 6, the driving end of the hydraulic cylinder 15 is fixedly connected with the retaining plate 13, a plurality of telescopic rods 16 are fixedly arranged on the bracket 6, and one end, far away from the bracket 6, of each telescopic rod 16 is fixedly connected with the retaining plate 13;

The hydraulic cylinder 15 is used for providing enough thrust for the bearing plate 13 so as to split the stress on the first track 1 and the second track 2, so that the bracket 6 can be effectively prevented from sinking, the frame 4 is kept horizontal, and the working efficiency of the excavator is improved; the telescopic rod 16 is used for limiting the abutting plate 13, preventing the probability of deviation of the abutting plate 13, and simultaneously, is used for distributing torque on the hydraulic cylinder 15, so that the service life of the hydraulic cylinder 15 is longer.

Referring to fig. 1-14, an adjusting mechanism is arranged between the retaining plate 13 and the two support frames 8; the adjusting mechanism comprises two wedge plates 10 fixedly arranged on the abutting plates 13, two adjusting rods 9 are fixedly arranged on the second supporting frame 8, one abutting wheel 11 matched with the corresponding wedge plate 10 is rotatably arranged on each adjusting rod 9, and a reset structure is arranged between each adjusting rod 9 and the first supporting frame 7;

The wedge plate 10 is designed in an ax shape, one surface matched with the pressing wheel 11 is designed in a 45-degree inclination angle, and the shortest edge of the ax is reserved with a straight buffer part, so that when the pressing wheel 11 is pressed against the buffer part, the pressing plate 13 can still lift within a certain range, the first track 1 and the second track 2 can be ensured to form a track, and meanwhile, the pressing plate 13 can freely move within a certain range, and the function of the design is to separate the pressing plate 13 from the ground in the process of rotating the track, thereby facilitating the movement of an excavator and preventing the pressing plate 13 from influencing the movement of the excavator;

The reset structure comprises a limiting sleeve fixedly arranged on the first support frame 7, a plurality of balls propped against the adjusting rod 9 are arranged in the limiting sleeve in a rolling way, and a reset spring is fixedly arranged between the limiting sleeve and the adjusting rod 9;

The function of the part is to reset the second support frame 8 after the wedge plate 10 is separated from the pressing wheel 11, so that the second crawler belt 2 is recovered into the first crawler belt 1; the ball is used for reducing the friction between the limiting sleeve and the adjusting rod 9, so that the adjusting rod 9 slides in the limiting sleeve more smoothly, and the service life of the adjusting rod 9 can be prolonged.

Referring to fig. 1 to 14, a pushing mechanism is installed between the retaining plate 13 and the two movable plates 12; the pushing mechanism comprises a toothed plate II 18 fixedly arranged on the movable plate 12, a toothed cylinder 20 meshed with the toothed plate II 18 is rotatably arranged on the abutting plate 13, a plurality of limiting frames 19 are fixedly arranged on the abutting plate 13, a toothed plate I17 meshed with the toothed cylinder 20 is jointly and slidably arranged on the limiting frames 19, and an air cylinder is arranged between the toothed plate I17 and the abutting plate 13 and plays a role in resetting;

the wire roller 22 is rotatably arranged on the abutting plate 13, the toothed plate one 17 is fixedly connected with the steel wire rope 21, and one end of the steel wire rope 21, which is far away from the toothed plate one 17, passes through the wire roller 22 and is fixedly connected with the bracket 6;

The function of the part is to drive the movable plate 12 to synchronously move while the resisting plate 13 moves, so that no additional driving source is needed, the number of the driving sources is reduced, and the environment-friendly effect is achieved; the limiting frame 19 is rotatably provided with a plurality of columns, the toothed plate one 17 is provided with two grooves matched with the corresponding columns, and the columns can rotate in the grooves when the toothed plate one 17 moves, so that friction between the toothed plate one 17 and the limiting frame 19 is reduced, loss of energy output by the hydraulic cylinder 15 in a transmission process is reduced, and energy utilization rate is improved.

Referring to fig. 1 to 14, the soil compacting part comprises two baffles 3 rotatably installed between two first support frames 7, wherein the two baffles 3 are connected with the first support frames 7 through shaft rods 23, and a linkage mechanism is installed between the two shaft rods 23 and corresponding rotating shafts 35;

The baffle 3 adopts the arc design, can flatten higher perk soil like this, and the arc is certain to take the ability of soil in addition simultaneously, in flattening the in-process, transport the soil to the rear of baffle 3, though the volume of transporting is less, but reducible baffle 3 the compaction degree of the place ahead soil to make flattening of soil more light (the theory of operation of this part is the same with the principle that the car was traveling on the road surface, drives the car through the rotation of tire and removes, and the effect is mutual, and baffle 3 rotates the in-process, can drive soil through frictional force and remove).

The linkage mechanism comprises two groups of driving teeth fixedly arranged on a rotating shaft 35, the two groups of driving teeth are composed of a plurality of meshing teeth 24, two incomplete tooth rings 25 are fixedly arranged on the rotating shaft 35, and a gear II 26 which is meshed with the plurality of meshing teeth 24 and the two incomplete tooth rings 25 is fixedly arranged on a shaft lever 23;

the function of this part is in order to utilize the rotation of pivot 35 to drive axostylus axostyle 23 rotation, need not to add the drive source additionally, has certain feature of environmental protection, still can keep pivot 35 rotation direction unchangeable simultaneously, drives axostylus axostyle 23 diversion rotation to this realizes intermittent type nature soil compacting's purpose, improves the utilization ratio of energy.

The specific operation steps of the soft soil foundation excavation device are as follows:

the retaining plate 13 expands: the hydraulic cylinder 15 is activated to move the abutment plate 13 downwards until the abutment plate 13 abuts against the ground, and then the abutment plate 13 is continued to be moved downwards to keep the frame 4 horizontal.

The movable plate 12 expands: along with the downward movement of the abutting plate 13, the toothed plate I17 sliding on the abutting plate 13 is driven to move downward, and because the length of the steel wire rope 21 is fixed, in the process of moving the toothed plate I17, the toothed plate I17 is driven to move to the side close to the steel wire rope 21 under the action of the steel wire rope 21, so that the toothed plate II 18 is driven to move to the side far from the steel wire rope 21 under the action of the tooth cylinder 20, the movable plate 12 is driven to move to the side far from the abutting plate 13, the movable plate 12 is driven to move to drive the storage plate 14 to move, the rotating plate 27 is driven to move, and the rotating plate 27 enters a sliding groove on the abutting plate 13 to fill the sliding groove; when the movable plate 12 moves, the piston in the cylinder moves, air is compressed, and when the hydraulic cylinder 15 resets, the cylinder returns to drive the movable plate 12 to move back.

And (2) adjusting a second support frame 8: along with the downward movement of the abutting plate 13, the wedge plate 10 is driven to move, so that the wedge plate 10 abuts against the abutting wheel 11, the abutting wheel 11 and the adjusting rod 9 are driven to move to one side close to the support frame II 8 under the abutting action of the wedge plate 10, and the support frame II 8 is driven to move to one side far away from the support frame I7, so that the crawler belt II 2 is taken out of the crawler belt I1.

Docking of track two 2 with track one 1: when the side of the second track 2 with the docking clamping plate 34 moves to the position of the docking clamping groove 33, the docking clamping plate 34 is propped against the docking clamping groove 33 under the action of the elastic telescopic rod 31, so that the first track 1 and the second track 2 are docked.

After the butt joint of the second track 2 and the first track 1 is completed, the abutting plate 13 continues to move, the abutting wheel 11 is located at the uppermost part of the wedge plate 10 and is not separated from the shortest side of the wedge plate 10, the abutting plate 13 abuts against a foundation during excavation, after the excavation is completed, the excavator needs to be moved, the hydraulic cylinder 15 needs to be recovered, the movable plate 12 is retracted under the action of the spring, the hydraulic cylinder 15 drives the abutting plate 13 to move upwards for a certain distance, the abutting plate 13 is separated from the foundation, the abutting wheel 11 is located at the bottom of the shortest side of the wedge plate 10 and is not separated from the shortest side of the wedge plate 10, the first track 1 and the second track 2 can be kept in a butt joint state at the moment, and the movement of a track formed by the first track 1 and the second track 2 is facilitated.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The soft soil foundation excavation device comprises a frame (4) and is characterized by further comprising a bracket (6) fixedly arranged on the frame (4);

the main body part comprises two first support frames (7) fixedly arranged on a support (6), two rotating shafts (35) are rotatably arranged on the two first support frames (7), a second support frame (8) is slidably arranged on the two matched rotating shafts (35) together, the two second support frames (8) are rotatably connected with the corresponding rotating shafts (35), a first crawler belt (1) is arranged on the two first support frames (7), and a second crawler belt (2) is arranged on the two second support frames (8);

the lifting device is characterized in that a retaining plate (13) is slidably arranged on the support (6), two containing plates (14) are slidably arranged on the retaining plate (13), a movable plate (12) is fixedly arranged on each containing plate (14), a lifting mechanism is arranged between the retaining plate (13) and the support (6), an adjusting mechanism is arranged between the retaining plate (13) and two support frames (8), and a pushing mechanism is arranged between the retaining plate (13) and each movable plate (12);

the soil pressing part comprises two baffle plates (3) which are rotatably arranged between two first support frames (7), the two baffle plates (3) are connected with the first support frames (7) through shaft rods (23), and a linkage mechanism is arranged between the two shaft rods (23) and corresponding rotating shafts (35).

2. A soft soil foundation excavation device according to claim 1, wherein a gear three is fixedly mounted on each rotating shaft (35), a chain one (28) is sleeved between two matched gears three, the chain one (28) is composed of a plurality of small chain ones, each small chain one is fixedly provided with a base plate one (30), each base plate one (30) is fixedly provided with a track plate one, and a plurality of track plate one forms a track one (1).

3. The soft soil foundation excavation device according to claim 2, wherein a plurality of first gears (5) are rotatably mounted on the second support frame (8), wherein the first gears (5) at two ends are in sliding connection with corresponding rotating shafts (35), a second chain (29) is sleeved on the first gears (5), the second chain (29) consists of a plurality of small sections of chains, each small section of chain is fixedly provided with a second backing plate (32), each backing plate (32) is fixedly provided with an elastic telescopic rod (31), one end, far away from the corresponding small chain, of each elastic telescopic rod (31) is fixedly provided with a second track shoe, a plurality of second track shoes are formed into second track shoes (2), and a clamping structure is mounted between each first track shoe and the corresponding second track shoe.

4. A soft soil foundation excavation device according to claim 3, wherein the engaging structure comprises a butt joint clamping groove (33) formed in a first track plate, a butt joint clamping plate (34) matched with the butt joint clamping groove (33) is fixedly mounted on a second track plate, and one end of the first track plate and one end of the second track plate matched with the first track plate adopt a 45-degree inclined design.

5. A soft soil foundation excavation device according to claim 1, wherein the lifting mechanism comprises a hydraulic cylinder (15) fixedly mounted at the bottom of the support (6), the driving end of the hydraulic cylinder (15) is fixedly connected with the retaining plate (13), a plurality of telescopic rods (16) are fixedly mounted on the support (6), and one end, far away from the support (6), of each telescopic rod (16) is fixedly connected with the retaining plate (13).

6. A soft soil foundation excavation device according to claim 1, wherein the adjusting mechanism comprises two wedge plates (10) fixedly mounted on the retaining plates (13), two adjusting rods (9) are fixedly mounted on the second supporting frame (8), one pressing wheel (11) matched with the corresponding wedge plate (10) is rotatably mounted on each of the two adjusting rods (9), and a reset structure is mounted between each of the two adjusting rods (9) and the first supporting frame (7).

7. The soft soil foundation excavation device of claim 6, wherein the reset structure comprises a limiting sleeve fixedly arranged on the first supporting frame (7), a plurality of balls which are abutted against the adjusting rod (9) are arranged in the limiting sleeve in a rolling manner, and a reset spring is fixedly arranged between the limiting sleeve and the adjusting rod (9).

8. A soft soil foundation excavation device according to claim 1, wherein the pushing mechanism comprises a toothed plate two (18) fixedly installed on the movable plate (12), a toothed drum (20) meshed with the toothed plate two (18) is rotatably installed on the retaining plate (13), a plurality of limiting frames (19) are fixedly installed on the retaining plate (13), a toothed plate one (17) meshed with the toothed drum (20) is slidingly installed on the limiting frames (19) together, a wire roller (22) is rotatably installed on the retaining plate (13), a steel wire rope (21) is fixedly connected to the toothed plate one (17), and one end, far away from the toothed plate one (17), of the steel wire rope (21) penetrates through the wire roller (22) and is fixedly connected with the support (6).

9. The soft soil foundation excavation device according to claim 1, wherein one end of the storage plate (14) far away from the movable plate (12) is rotatably provided with a folding plate, the folding plate is composed of a plurality of rotating plates (27), two adjacent rotating plates (27) are rotatably connected, the middle part of the withstanding plate (13) is provided with a storage groove matched with the plurality of rotating plates (27), and the bottom of the withstanding plate (13) is provided with a sliding groove matched with the storage plate (14).

10. A soft soil foundation excavation device according to claim 1, wherein the linkage mechanism comprises two sets of driving teeth fixedly mounted on a rotating shaft (35), each set of driving teeth comprises a plurality of meshing teeth (24), two incomplete tooth rings (25) are fixedly mounted on the rotating shaft (35), and two gears (26) which are meshed with the plurality of meshing teeth (24) and the two incomplete tooth rings (25) are fixedly mounted on the shaft lever (23).