Steel pipe pile dismantling equipment and construction method thereof under confined space

Abstract

The application provides a steel pipe pile dismantling equipment in a confined space, which comprises a main beam fixed on a rotating module, two transmission assemblies are arranged in parallel on one side of the main beam, each transmission assembly comprises a fixed frame, a top extension rod is arranged on one side of the fixed frame, a fourth connecting rod is fixed on the end of the top extension rod, two pile clamp assemblies are oppositely arranged on the other side of the fixed frame, the top extension rod is used to drive the two pile clamp assemblies to switch between open and closed states, a first circular arc opening is arranged on the inner side of each pile clamp assembly, and the two first circular arc openings are abutted against the outer side wall of the steel pipe pile. The application has the advantages of ingenious design, compact structure, high efficiency and safety in steel pipe pile dismantling, and good economic benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering construction, in particular to a steel pipe pile removal device in a confined space and a construction method thereof. Background Art

[0002] With the rapid development of infrastructure in my country, low-support structures are being used as concrete supports in various fields, including bridges, hydraulic engineering, and municipal engineering. Currently, when dismantling supports in Chinese construction projects, steel pipe piles are often tied with wire rope and dragged using mechanical equipment. This poses significant safety risks and low construction efficiency. This is especially true for complex construction sites with limited operating space. Equipment cannot easily adjust its position and angle, and a large number of personnel are required to monitor the work, resulting in low dismantling efficiency and complex operations.

[0003] Chinese patent document CN 113202027 A describes a method for quickly dismantling cast-in-place beam steel pipe pile supports. However, this method has many safety hazards and requires hoisting from the bridge deck, requiring the provision of specially prepared reserved holes. Due to the large number of steel pipe piles, the reserved holes must be filled later, making construction inconvenient. Chinese patent document CN 217629447 U describes a Bailey frame dismantling system for cast-in-place beam steel pipe piles. However, this dismantling system still uses hoisting for dismantling, which has obvious defects and needs improvement. Summary of the Invention

[0004] The present invention provides a steel pipe pile removal device in a confined space and a construction method thereof, which solves the problems of high safety risks and low construction efficiency during the removal of a few supports.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a steel pipe pile dismantling equipment in a confined space, comprising a main beam fixedly mounted on a rotating module, two transmission assemblies are provided in parallel on one side of the main beam, the transmission assembly includes a fixed frame, a top extension rod is provided on one side of the fixed frame, a fourth connecting rod is fixed to the end of the top extension rod, and two pile clamp assemblies are provided opposite to each other on the other side of the fixed frame. The top extension rod is telescopically driven to drive the two pile clamp assemblies to complete the switching of the opening and closing states. A first arc opening is provided on the inner side of the pile clamp assembly, and the two opposite first arc openings abut against the outer wall of the steel pipe pile.

[0006] In a preferred solution, one side of the pile clamp assembly is hinged with a first link and a second link, the other sides of the first link and the second link are hinged to the fixed frame, the second link is connected to the third link and the fourth link through the third link, and the two sides of the third link are hinged to the second link and the fourth link respectively.

[0007] In a preferred solution, the pile clamp assembly includes three clamping plates arranged from top to bottom, the first arc opening is arranged inside the first arc opening, and the three first arc openings are respectively connected by two first round rods and a clamping plate.

[0008] In the preferred solution, a through groove is provided in the middle of the main beam, a slide is provided on one side of the through groove, a vertical plate is provided at the bottom of the transmission assembly on the upper side, the vertical plate is slid in the slide, two baffles are provided parallel to the bottom of the fixed frame, and a detachable limit rod is provided on the inner side of the baffle. Ear plates are provided on both sides of the main beam, and the limit rods rest against the lower side of the ear plates.

[0009] In the preferred solution, a driving unit is provided in the through slot, and the driving unit includes a first motor, a bracket is provided at the end of the first motor, the bracket is rotatably set on the screw, a base plate is provided at the lower part of the fixed frame, the top extension rod is fixed on one side of the base plate, the vertical plate is fixed on the other side of the base plate, a threaded hole is provided on the vertical plate, and the bracket is passed through the threaded hole.

[0010] In a preferred solution, a safety module is detachably provided on a side of the pile clamp assembly farther from the main beam. The safety module includes a driven gear provided on the second round rod. One side of the driven gear is meshedly connected to a driving gear. The driving gear is fixed on an extension shaft. The extension shaft is connected to the clamping plate through a second motor. Two first straight plates and a second straight plate are respectively provided in parallel on two opposing second round rods. The first straight plate and the second straight plate are spaced apart.

[0011] In a preferred embodiment, a first iron bar and a first electromagnetic bar are respectively provided at the lower portion of the two first straight plates, a second electromagnetic bar and a second iron bar are respectively provided at the lower portion of the two second straight plates, the first iron bar and the second electromagnetic bar are electromagnetically connected, and the first electromagnetic bar and the second iron bar are electromagnetically connected.

[0012] In the preferred solution, a follow-up lock is also provided, which includes two first rollers and a second roller arranged opposite to each other, the first roller is fixed on the top of the second round rod, a fixing rod is fixed to the middle of the uppermost splint, and the second roller is rotatably set on the fixing rod, and the first roller and the second roller are connected by a steel wire rope, one side of the steel wire rope is fixed on the first roller, and a locking plate is provided on the other side of the steel wire rope, and a V-shaped groove is provided on the locking plate, and the V-shaped groove rests on the outer wall of the steel pipe pile.

[0013] In the preferred embodiment, a push frame is also provided, which includes an arc-shaped plate, inclined plates on both sides of the arc-shaped plate, a second arc opening in the middle of the arc-shaped plate, a waist-shaped groove passing through the inclined plate, a through rod in the waist-shaped groove, the through rod is inserted into the pile clamp assembly, a screw is provided on the other side of the lock plate, a second guide plate is provided in the middle of the push frame, the screw is passed through the second guide plate, a spring is sleeved on the V-shaped groove, a nut is threadedly connected to the screw, a first guide plate is also provided at the end of the arc-shaped plate, and the wire rope is passed through the first guide plate.

[0014] The preferred solution comprises the following steps:

[0015] S1. Complete the assembly of the device and then install it on the crawler machine arm;

[0016] S2. Remove the distribution beam system on the top of the steel pipe pile to make the steel pipe pile free from external loads;

[0017] S3. Cut off the connection between the top of the steel pipe pile and the distribution beam system, and cut off the connection between the bottom of the steel pipe pile and the foundation;

[0018] S4. Maintain the main beam in a vertical state by adjusting the rotating module, and use the crawler machine to approach the steel pipe pile, clamp the pile clamp assembly, and lock it;

[0019] S5. The crawler machine moves backward and moves the steel pipe pile to an open area outside the confined space;

[0020] S6. Adjust the transmission assembly on the upper side to raise the steel pipe pile, then enable the rotation module to open and rotate, adjust the main beam to a horizontal state, and use the transmission assembly again to adjust the position of the steel pipe pile, keeping the opening of the pile clamp assembly facing forward;

[0021] S7. Adjust the crawler machine arm, open the two pile clamp assemblies through the jacking rod, and store the steel pipe pile horizontally;

[0022] S8. Repeat S2 to S6 until all steel pipe piles are removed.

[0023] The beneficial effects of the present invention are: high safety, replacing the traditional process of using wire rope towing; efficient construction, using crawler machine mechanical arms to cooperate with grabbing, eliminating the need for wire rope tying; low labor, requiring only one operator to complete the work; good structural adaptability, and can also adapt to steel pipe piles of various pile diameters by replacing pile clamps of different sizes; by replacing main beams of different lengths and different numbers of pile clamps, it can adapt to steel pipe piles of different lengths; the pile clamps are adapted to the steel pipe piles to be removed, can tightly grip the steel pipe piles, and have good stability; and are particularly suitable for removing steel pipe piles using ground-mounted steel pipe pile supports as cast-in-place concrete supports. The present invention is easy to operate, can effectively improve the efficiency of steel pipe pile dismantling operations, and has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples:

[0025] Figure 1 This is the first structural clamping steel pipe pile construction diagram of the present invention, state 1;

[0026] Figure 2 This is the second state of the construction diagram of the first structure clamping steel pipe pile of the present invention;

[0027] Figure 3 This is the first structural clamping steel pipe pile construction diagram of the present invention, state three;

[0028] Figure 4 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 5 yes Figure 4 Schematic top view of

[0030] Figure 6 yes Figure 4 Schematic diagram of the exploded structure of the transmission component;

[0031] Figure 7 This is a schematic diagram of the construction of the second structure clamping steel pipe pile of the present invention;

[0032] Figure 8 yes Figure 7 A front view schematic diagram of

[0033] Figure 9 yes Figure 7 Schematic top view of

[0034] Figure 10 yes Figure 7 Schematic diagram of the left side;

[0035] Figure 11 yes Figure 7 Schematic diagram of the explosion structure state 1;

[0036] Figure 12 yes Figure 7 Schematic diagram of the explosion structure in state 2;

[0037] Figure 13 yes Figure 7 Schematic diagram of the explosion structure of the pile clamp assembly with the transmission assembly, safety module and follower lock in state one;

[0038] Figure 14 yes Figure 7 Schematic diagram of the explosion structure of the pile clamp assembly with the transmission assembly, safety module and follower lock in state two;

[0039] Figure 15 yes Figure 7 Schematic diagram of the explosion structure of the pile clamp assembly with the transmission assembly, safety module and follower lock in state three;

[0040] Figure 16 yes Figure 7 Schematic diagram of the explosion structure of the pile clamp assembly with the transmission assembly, safety module and follower lock installed in state four.

[0041] In the figure: pile clamp assembly 1; clamping plate 101; first round rod 102; second round rod 103; first arc opening 104; transmission assembly 2; first connecting rod 201; second connecting rod 202; third connecting rod 203; fourth connecting rod 204; fixing frame 205; bottom plate 206; vertical plate 207; threaded hole 208; baffle 209; limit rod 210; extension rod 3; main beam 4; slideway 401; ear plate 402; through slot 403; rotation module 5; steel pipe pile 6; drive unit 7; first motor 701; bracket 702; screw 703; safety module 8; extension shaft 801; driven gear 8 02; second motor 803; driving gear 804; first straight plate 805; second straight plate 806; first iron bar 807; first electromagnetic bar 808; second electromagnetic bar 809; second iron bar 810; push frame 9; inclined plate 901; arc plate 902; waist round groove 903; second arc opening 904; first guide plate 905; second guide plate 906; follow-up lock 10; first roller 1001; second roller 1002; lock plate 1003; wire rope 1004; V-groove 1005; screw 1006; spring 1007; nut 1008; fixing rod 11; through rod 12. DETAILED DESCRIPTION

[0042] like Figure 1-6 In the present invention, a steel pipe pile removal device in a confined space includes a main beam 4 fixedly mounted on a rotating module 5. Two transmission assemblies 2 are provided in parallel on one side of the main beam 4. The transmission assembly 2 includes a fixed frame 205. A jacking rod 3 is provided on one side of the fixed frame 205. A fourth connecting rod 204 is fixed to the end of the jacking rod 3. Two pile clamp assemblies 1 are provided opposite each other on the other side of the fixed frame 205. The jacking rod 3 telescopes and drives the two pile clamp assemblies 1 to complete the switching of the open and closed states. A first arc opening 104 is provided on the inner side of the pile clamp assembly 1. The two opposing first arc openings 104 abut against the outer wall of the steel pipe pile 6. The rotating module 5 is provided with a rotating disk, and one side of the main beam 4 is fixed on the rotating disk. By rotating the rotating disk, the main beam 4 can be driven to adjust its angle, so that the steel pipe piles 6 clamped by each pile clamp assembly 1 are switched from a vertical state to a horizontal state, ensuring that the steel pipe piles 6 have a low center of gravity during transportation and move safely and efficiently. The jacking rod 3 adopts a hydraulic rod, which has good steady-state responsiveness. At the same time, the overall bearing capacity is strong, which ensures the stability of the jacking and extension. The overall structural rigidity is strong, and the disassembly process of the steel pipe piles 6 can be completed well.

[0043] In a preferred embodiment, a first link 201 and a second link 202 are hinged on one side of the pile clamp assembly 1. The other sides of the first link 201 and the second link 202 are hinged to a fixed frame 205. The second link 202 is connected to a third link 203 and a fourth link 204. Both sides of the third link 203 are hinged to the second link 202 and the fourth link 204 respectively. With this structure, the telescopic action of the extension rod 3 drives the fourth link 204 forward or backward, thereby changing the position of the third link 203. Since the second link 202 is hingedly fixed to the fixed frame 205, the angle of the second link 202 can be changed by the third link 203. At the same time, subject to the constraint of the first link 202 on the pile clamp assembly 1, a quadrilateral structure is formed among the pile clamp assembly 1, the first link 201, the second link 202 and the fixed frame 205. By designing the lengths of the first link 201, the second link 202, the third link 203 and the fourth link 204, the rotation angle and variation range of the pile clamp assembly 1 can be precisely controlled, which is convenient to use and has a good clamping effect on the steel pipe pile 6.

[0044] In a preferred embodiment, the pile clamp assembly 1 includes three clamping plates 101 arranged from top to bottom, with first arcuate openings 104 disposed inwardly of the first arcuate openings 104. The three first arcuate openings 104 are connected by two first round rods 102 and a clamping plate 101. This structure provides high overall clamping strength and a strong ability to bear lateral forces, while significantly reducing the overall weight of the pile clamp assembly 1. The cantilever structure formed between the pile clamp assembly 1 and the main beam 4 reduces the vertical load on the fixing frame 205.

[0045] like Figure 7-12 In the preferred solution, a through groove 403 is provided in the middle of the main beam 4, a slideway 401 is provided on one side of the through groove 403, a vertical plate 207 is provided at the bottom of the transmission assembly 2 on the upper side, and the vertical plate 207 is slid in the slideway 401, and two baffles 209 are provided in parallel at the bottom of the fixed frame 205. A limit rod 210 is detachably provided on the inner side of the baffle 209, and ear plates 402 are provided on both sides of the main beam 4, and the limit rod 210 rests on the lower side of the ear plate 402. With this structure, the baffle 209 and the limiting rod 210 can be better clamped on the ear plate 402, ensuring the stability of the structure itself, enhancing rigidity, and better coping with the bending moment effect caused by the pile clamp assembly 1 acting as a cantilever. The limiting rod 210 and the baffle 209 are threadedly connected, which is more convenient to adjust. At the same time, a slide 401 is provided to adjust the position of the transmission assembly 2 on the upper side. By moving the transmission assembly 2 within the range of the slide 401, the position of the clamped steel pipe pile 6 is changed, which facilitates the adjustment of the center of gravity of the steel pipe pile 6, facilitates the rotation module 5 to complete the state switching, and is also beneficial for safe transportation in the later stage.

[0046] In the preferred embodiment, a drive unit 7 is disposed within the through slot 403. The drive unit 7 comprises a first motor 701, with a bracket 702 disposed at the end thereof. The bracket 702 is rotatably mounted on a lead screw 703. A base plate 206 is disposed below the fixed frame 205. The extension rod 3 is fixed to one side of the base plate 206, and a vertical plate 207 is fixed to the other side of the base plate 206. The vertical plate 207 is provided with a threaded hole 208, into which the bracket 702 is inserted. This structure allows for stable adjustment of the position of the transmission assembly 2, while providing strong overall structural stability and high adjustment accuracy.

[0047] like Figure 13-16 In a preferred embodiment, a safety module 8 is detachably provided on a side of the pile clamp assembly 1 farther from the main beam 4. The safety module 8 includes a driven gear 802 provided on the second round rod 103. One side of the driven gear 802 is meshedly connected to a driving gear 804. The driving gear 804 is fixed to an extension shaft 801. The extension shaft 801 is connected to the clamping plate 101 via a second motor 803. Two first straight plates 805 and a second straight plate 806 are respectively provided in parallel on the two opposing second round rods 103. The first straight plate 805 and the second straight plate 806 are spaced apart. After the steel pipe pile 6 is clamped, it is inevitable that the entire pile 6 will vibrate due to the unevenness of the construction road surface during walking and transportation, and the vibration will affect the clamping effect. Therefore, in order to ensure the safe clamping of the steel pipe pile 6, the two second motors 803 make their respective first straight plates 805 and second straight plates 806 fit against the side walls of the steel pipe pile 6 after the steel pipe pile 6 enters the pile clamp assembly 1, further completing the auxiliary locking and improving the overall safety.

[0048] In a preferred embodiment, a first iron bar 807 and a first electromagnetic bar 808 are respectively provided at the bottom of the two first straight plates 805, and a second electromagnetic bar 809 and a second iron bar 810 are respectively provided at the bottom of the two second straight plates 806. The first iron bar 807 and the second electromagnetic bar 809 are electromagnetically connected, and the first electromagnetic bar 808 and the second iron bar 810 are electromagnetically connected. This structure allows the two opposing first straight plates 805 and the second straight plates 806 to be completely locked to each other, which improves the structure. At the same time, if a circuit failure occurs on either side, the electromagnetic bar on the other side can still attract the iron bar on the opposite side, which can adapt to more working conditions, improve working stability, and the two sides serve as backup for each other.

[0049] In the preferred embodiment, a follow-up lock 10 is also provided, which includes two first rollers 1001 and second rollers 1002 arranged opposite to each other. The first roller 1001 is fixed on the top of the second round rod 103, and a fixed rod 11 is fixed in the middle of the uppermost splint 101. The second roller 1002 is rotatably set on the fixed rod 11. The first roller 1001 and the second roller 1002 are connected by a steel wire rope 1004. One side of the steel wire rope 1004 is fixed around the first roller 1001, and the other side of the steel wire rope 1004 is provided with a lock plate 1003. The lock plate 1003 is provided with a V-shaped groove 1005, and the V-shaped groove 1005 abuts against the outer wall of the steel pipe pile 6. With this structure, when the second motor 803 drives the second round rod 103 to rotate, it can drive the first roller 1001 to adjust the length of the wire rope 1004. The second roller 1002 plays a role in guiding and ensuring that the wire rope and the steel pipe pile 6 are at a safe distance. When the length of the wire rope 1004 is reduced, it will drive the locking plate 1003 to be squeezed on the steel pipe pile 6. In this way, the circumference of the steel pipe pile 6 is completely fixed and the safety is greatly improved. The rotation directions of the two second motors 803 on both sides are opposite.

[0050] In the preferred embodiment, a push frame 9 is further provided, which includes an arc-shaped plate 902, with inclined plates 901 on both sides of the arc-shaped plate 902, a second arc opening 904 in the middle of the arc-shaped plate 902, a waist-shaped groove 903 passing through the inclined plate 901, a through rod 12 in the waist-shaped groove 903, and the through rod 12 is inserted into the pile clamp assembly 1. A screw 1006 is provided on the other side of the lock plate 1003, a second guide plate 906 is provided in the middle of the push frame 9, the screw 1006 is passed through the second guide plate 906, a spring 1007 is sleeved on the V-shaped groove 1005, and a nut 1008 is threadedly connected to the screw 1006. A first guide plate 905 is also provided at the end of the arc-shaped plate 902, and the wire rope 1004 is passed through the first guide plate 905. With this structure, the locking effect of the lock plate 1003 is further enhanced, ensuring that the moving line of the lock plate 1003 is a straight line, and the overall control accuracy is high. At the same time, the push frame 9 constrains and locks the pile clamp assemblies 1 on both sides, and the overall force is more sufficient. The arc plate 902 plays a role in increasing the locking range, and the overall locking effect is further improved.

[0051] The preferred solution comprises the following steps:

[0052] S1. Complete the assembly of the device and then install it on the crawler machine arm; the crawler machine has strong adaptability and low modification cost. The device can be flexibly adjusted according to the diameter of the disassembled steel pipe pile 6.

[0053] S2, dismantling the distribution beam system on the top of the steel pipe pile 6 so that the steel pipe pile 6 is not subjected to external load;

[0054] S3. Cut off the connection between the top of the steel pipe pile 6 and the distribution beam system, and cut off the connection between the bottom of the steel pipe pile 6 and the foundation; after the steps S2-S3, the steel pipe pile 6 is in a relatively unconstrained state, which is relatively risky. During the actual construction, the crawler machine uses the pile clamp assembly 1 to clamp the non-cut part of the steel pipe pile 6, which ensures the stability of the steel pipe pile 6 and ensures the safety and efficiency of the construction of the workers.

[0055] S4. Maintain the main beam 4 in a vertical state by adjusting the rotating module 5, and use the crawler machine to approach the steel pipe pile 6, clamp the pile clamp assembly 1 and lock it; because it is in a confined space, it is impossible to complete the state switching of the steel pipe pile 6 due to the length and weight of the steel pipe pile 6, that is, the space for changing the vertical state to the horizontal state is limited.

[0056] S5. The crawler machine moves backward and transports the steel pipe pile 6 to an open area outside the confined space. During the transportation process, the upper side of the steel pipe pile 6 is prevented from scratching the bottom of the beam panel, and the lower side of the steel pipe pile 6 is prevented from colliding with the ground. Therefore, it is necessary to move toward an open direction during this process. At the same time, when there is rotation space, the rotating module 5 is used to adjust the steel pipe pile 6 to a certain tilting position until it is completely moved out of the confined space.

[0057] S6. Adjust the transmission assembly 2 on the upper side to lift the steel pipe pile 6, then enable the rotation module 5 to open and rotate, adjust the main beam 4 to a horizontal state, and use the transmission assembly 2 again to adjust the position of the steel pipe pile 6, keeping the opening of the pile clamp assembly 1 facing forward; the transmission assembly 2 on the upper side can move up and down within a certain range, so it can cooperate with the pile clamp assembly 1 to complete the height adjustment of the steel pipe pile 6 until the bottom of the steel pipe pile 6 does not collide with the ground during the rotation process.

[0058] S7. Adjust the crawler machine arm, open the two pile clamp assemblies 1 through the jacking rod 3, and store the steel pipe pile 6 horizontally; after reaching the designed position, the first straight plate 805 and the second straight plate 806 on the safety module 8 can also serve as guide panels, playing a guiding and supporting role, extending the sliding length of the steel pipe pile 6, which is more conducive to the storage of the steel pipe pile 6.

[0059] S8. Repeat S2 to S6 until all steel pipe piles are removed.

[0060] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. In other words, equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A steel pipe pile removal device in a confined space, characterized by: The invention comprises a main beam (4) fixed on a rotating module (5), two transmission assemblies (2) are provided in parallel on one side of the main beam (4), the transmission assembly (2) comprises a fixed frame (205), a top extension rod (3) is provided on one side of the fixed frame (205), a fourth connecting rod (204) is fixed on the end of the top extension rod (3), two pile clamp assemblies (1) are provided opposite to each other on the other side of the fixed frame (205), the top extension rod (3) telescopically drives the two pile clamp assemblies (1) to complete the switching of the opening and closing states, the inner side of the pile clamp assembly (1) is provided with a first circular arc opening (104), and the two opposite first circular arc openings (104) abut against the outer side wall of the steel pipe pile (6); One side of the pile clamp assembly (1) is hinged with a first connecting rod (201) and a second connecting rod (202); the other sides of the first connecting rod (201) and the second connecting rod (202) are hinged to a fixed frame (205); the second connecting rod (202) is connected via a third connecting rod (203) and a fourth connecting rod (204); and both sides of the third connecting rod (203) are hinged to the second connecting rod (202) and the fourth connecting rod (204) respectively; A through slot (403) is provided in the middle of the main beam (4), a slideway (401) is provided through one side of the through slot (403), a vertical plate (207) is provided at the bottom of the transmission assembly (2) on the upper side, the vertical plate (207) is slidably arranged in the slideway (401), two baffles (209) are provided in parallel at the bottom of the fixed frame (205), and a detachable limiting rod (210) is provided on the inner side of the baffle (209), and ear plates (402) are provided on both sides of the main beam (4), and the limiting rod (210) abuts against the lower side of the ear plates (402); A driving unit (7) is provided in the through slot (403), and the driving unit (7) includes a first motor (701). A bracket (702) is provided at the end of the first motor (701), and the bracket (702) is rotatably provided on the lead screw (703). A bottom plate (206) is provided at the lower portion of the fixed frame (205), and a top extension rod (3) is fixed on one side of the bottom plate (206). A vertical plate (207) is fixed on the other side of the bottom plate (206). A threaded hole (208) is provided on the vertical plate (207), and the bracket (702) is inserted into the threaded hole (208). A safety module (8) is detachably provided on a side of the pile clamp assembly (1) farther from the main beam (4). The safety module (8) comprises a driven gear (802) provided on a second round rod (103). One side of the driven gear (802) is meshedly connected to a driving gear (804). The driving gear (804) is fixed on an extension shaft (801). The extension shaft (801) is connected to the clamping plate (101) via a second motor (803). Two first straight plates (805) and a second straight plate (806) are respectively provided in parallel on two opposing second round rods (103). The first straight plate (805) and the second straight plate (806) are spaced apart.

2. The confined space steel pipe pile removal device according to claim 1, characterized in that: The pile clamp assembly (1) comprises three clamping plates (101) arranged from top to bottom, a first circular arc opening (104) is arranged inside the first circular arc opening (104), and the three first circular arc openings (104) are respectively connected through two first round rods (102) and a clamping plate (101).

3. The equipment for removing steel pipe piles in confined spaces according to claim 1 is characterized by: A first iron bar (807) and a first electromagnetic bar (808) are respectively provided at the lower parts of the two first straight plates (805); a second electromagnetic bar (809) and a second iron bar (810) are respectively provided at the lower parts of the two second straight plates (806); the first iron bar (807) and the second electromagnetic bar (809) are electromagnetically connected, and the first electromagnetic bar (808) and the second iron bar (810) are electromagnetically connected.

4. The confined space steel pipe pile removal device according to claim 1, characterized in that: A follow-up lock (10) is also provided. The follow-up lock (10) includes two first rollers (1001) and a second roller (1002) arranged opposite to each other. The first roller (1001) is fixed to the top of the second round rod (103). A fixed rod (11) is fixed to the middle of the uppermost clamping plate (101). The second roller (1002) is rotatably arranged on the fixed rod (11). The first roller (1001) and the second roller (1002) are connected by a steel wire rope (1004). One side of the steel wire rope (1004) is wound around and fixed to the first roller (1001). The other side of the steel wire rope (1004) is provided with a lock plate (1003). The lock plate (1003) is provided with a V-shaped groove (1005). The V-shaped groove (1005) abuts against the outer wall of the steel pipe pile (6).

5. The equipment for removing steel pipe piles in confined spaces according to claim 4, characterized in that: A push frame (9) is also provided, the push frame (9) includes an arc plate (902), inclined plates (901) are respectively provided on both sides of the arc plate (902), a second arc opening (904) is provided in the middle of the arc plate (902), a waist-shaped groove (903) is provided through the inclined plate (901), a through rod (12) is provided in the waist-shaped groove (903), the through rod (12) is inserted into the pile clamp assembly (1), a screw (1006) is provided on the other side of the locking plate (1003), a second guide plate (906) is provided in the middle of the push frame (9), the screw (1006) is passed through the second guide plate (906), a spring (1007) is sleeved on the V-shaped groove (1005), a nut (1008) is threadedly connected to the screw (1006), a first guide plate (905) is further provided at the end of the arc plate (902), and the wire rope (1004) is passed through the first guide plate (905).

6. The method for dismantling steel pipe piles in a confined space according to any one of claims 1 to 5, wherein: The following steps are involved: S1. Complete the assembly of the device and then install it on the crawler machine arm; S2, dismantling the distribution beam system on the top of the steel pipe pile (6) so that the steel pipe pile (6) is not subjected to external loads; S3, cutting off the connection between the top of the steel pipe pile (6) and the distribution beam system, and cutting off the connection between the bottom of the steel pipe pile (6) and the foundation; S4, by adjusting the rotating module (5), the main beam (4) is kept in a vertical state, and the crawler machine is used to approach the steel pipe pile (6) and then clamp the pile clamp assembly (1) and lock it; S5, the crawler machine moves backward and moves the steel pipe pile (6) to an open area outside the confined space; S6. Adjust the transmission assembly (2) on the upper side to raise the steel pipe pile (6), and then the rotating module (5) can be opened and rotated, the main beam (4) is adjusted to a horizontal state, and the transmission assembly (2) is used again to adjust the position of the steel pipe pile (6), keeping the pile clamp assembly (1) open to the front; S7, adjust the crawler machine arm, open the two pile clamp assemblies (1) through the top extension rod (3), and store the steel pipe pile (6) horizontally; S8. Repeat S2 to S6 until all steel pipe piles are removed.

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