Pile pulling equipment for civil engineering

Abstract

The invention discloses civil engineering pile pulling equipment and belongs to the technical field of civil engineering, the civil engineering pile pulling equipment comprises a support assembly, the support assembly comprises a mounting cylinder, the upper end and the lower end of the outer side of the mounting cylinder are rotationally sleeved with supporting rings, and a plurality of outer supports making contact with the ground are connected to the outer walls of the supporting rings in the circumferential direction; a reciprocating swing assembly is arranged between the mounting cylinder and one of the outer supports, four first clamping assemblies used for clamping and positioning the precast pile are distributed on the top of the inner side of the mounting cylinder in the circumferential direction, a second clamping assembly located below the reciprocating swing assembly is arranged on the inner side of the mounting cylinder, and the second clamping assembly is movably attached to the precast pile. And an intermittent lifting assembly movably matched with the second clamping assembly is arranged between the mounting cylinder and the outer bracket. The device has the advantages of stable clamping, reciprocating swinging, intermittent upward moving, reliable structure, convenience in operation, simplicity, convenience and practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering, and particularly to a pile extraction device for civil engineering. Background Art

[0002] Civil engineering is an applied science that focuses on the planning, design, construction, and maintenance of various physical engineering facilities, aiming to provide safe and reliable infrastructure for human life, production, and social activities. Its core content includes all-round technical activities such as material research and development, geological exploration, structural design, construction methods, and post-maintenance, covering multiple fields such as architecture, transportation, water conservancy, and the environment. During the construction process of civil engineering, precast piles are usually used to fix and support pipelines or divide the construction area.

[0003] After the project construction is completed, it is necessary to extract the precast piles. The existing pile extraction devices for civil engineering generally first clamp the side wall of the precast pile through a clamping mechanism, and then, through the cooperation of a lifting mechanism and the clamping mechanism, vertically lift the precast pile. However, such pile extraction devices are generally large in size, and during the upward extraction of the precast pile, the contact area between the side wall of the precast pile and the soil is too large, resulting in a large resistance when extracting the precast pile, unable to extract the pile quickly, and reducing the pile extraction efficiency.

[0004] Therefore, it is necessary to provide a pile extraction device for civil engineering to solve the above problems. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the embodiment of the present invention is to provide a pile extraction device for civil engineering to solve the problems in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A pile extraction device for civil engineering includes a bracket assembly. The bracket assembly includes an installation cylinder. The upper and lower ends of the outer side of the installation cylinder are rotatably sleeved with support rings. A plurality of outer brackets in contact with the ground are circumferentially connected to the outer wall of the support rings. A reciprocating swing assembly is provided between the installation cylinder and one of the outer brackets. Four groups of first clamping assemblies for clamping and positioning precast piles are circumferentially distributed at the top inside the installation cylinder. A second clamping assembly is provided inside the installation cylinder below the reciprocating swing assembly. The second clamping assembly is in movable fit with the precast pile. An intermittent lifting assembly that is in movable cooperation with the second clamping assembly is provided between the installation cylinder and the outer bracket.

[0007] As a further solution of the present invention, the reciprocating swing assembly includes an arc-shaped side plate provided on the outer wall of the installation cylinder. A reciprocating tooth groove is provided on the outer wall of the arc-shaped side plate. A rotary motor is installed on the outer bracket. The output end of the rotary motor is connected to a stub gear that is in movable engagement with the reciprocating tooth groove.

[0008] As a further solution of the present invention, the first clamping assembly includes an L-shaped mounting seat fixedly installed on the inner wall of the mounting cylinder. Two hinge plates are rotatably connected to the L-shaped mounting seat. Gear portions are provided at one ends of the hinge plates close to the L-shaped mounting seat. An L-shaped sliding tooth plate meshing with the two gear portions is slidably provided on the L-shaped mounting seat. One ends of the hinge plates away from the L-shaped mounting seat are connected to a first clamping plate, and the first clamping plate is movably attached to the outer edge of the precast pile. A first upright column is installed at the bottom of the L-shaped mounting seat. One end of the first upright column penetrates through the L-shaped sliding tooth plate and is connected to a first retaining ring. A first spring sleeved outside the first upright column is connected between the L-shaped mounting seat and the L-shaped sliding tooth plate.

[0009] As a further solution of the present invention, the second clamping assembly includes four first cross bars circumferentially arranged on the inner wall of the mounting cylinder. A moving frame is slidably provided on the first cross bar. A contact plate abutting against the outer wall of the precast pile is installed at one end of the moving frame away from the inner wall of the mounting cylinder. A guide rod connected to the corresponding first clamping plate is slidably connected to the contact plate. A movable plate is connected to the bottom of the moving frame. First guiding chutes are symmetrically arranged on both sides of the movable plate. A lifting ring cylinder is slidably provided on the inner wall of the mounting cylinder. An active clamping module matching with the first guiding chutes is arranged inside the lifting ring cylinder. A plurality of chutes are circumferentially formed on the outer wall of the mounting cylinder. A first sliding column connected to the lifting ring cylinder is slidably provided in the chute.

[0010] As a further solution of the present invention, the active clamping module includes four pairs of supporting sliding plates arranged on the inner wall of the lifting ring cylinder. Each pair of supporting sliding plates is correspondingly distributed with respect to the corresponding movable plate. A connecting frame is slidably provided on the supporting sliding plate. Second clamping plates movably attached to the outer wall of the precast pile are connected to one ends of each pair of connecting frames away from the support assembly. A second sliding column is slidably provided on one side of the connecting frame close to the movable plate. The outer end of the second sliding column is slidably matched with the first guiding chute. A second spring is connected between the other end of the second sliding column and the inner wall of the connecting frame.

[0011] As a further solution of the present invention, the intermittent lifting assembly includes a movable ring slidably provided on the inner side walls of a plurality of outer brackets. An electric cylinder is connected between one of the outer brackets and the movable ring. A plurality of blocks are circumferentially arranged at the bottom of the movable ring. A movable plate and a second cross bar are slidably provided on the outer bracket. Active arc plates are connected to one ends of the movable plate and the second cross bar close to the mounting cylinder. A second guiding chute slidably matched with the first sliding column is formed on one side of the active arc plate close to the support assembly. The movable plate and the second cross bar are connected by a connecting plate away from the mounting cylinder. A third spring sleeved outside the second cross bar is connected between the active arc plate and the outer bracket. A clamping groove movably cooperating with the block is provided at one end of the movable plate close to the active arc plate.

[0012] As a further solution of the present invention, a cleaning assembly in movable contact with the outer wall of the precast pile is further provided at the bottom of the mounting cylinder; The cleaning component includes several square rods circumferentially distributed at the inner bottom of the installation cylinder. A second retaining ring is provided at one end of the square rod away from the inner wall of the installation cylinder. A sliding plate is slidably arranged on the square rod. A fourth spring sleeved on the outer side of the square rod is connected between the sliding plate and the installation cylinder. The bottom of the sliding plate is connected with a cleaning plate that is in movable contact with the outer wall of the precast pile.

[0013] As a further scheme of the present invention, the first guiding chute is set as a trapezoidal annular groove. The depth of the lowest end of the first guiding chute is greater than the depth of the left low end of the first guiding chute, and the depth of the highest end of the first guiding chute is less than the depth of the left high end of the first guiding chute.

[0014] As a further scheme of the present invention, the second clamping plate is set as a right-angled plate, and an elastic layer is provided on the side of the second clamping plate close to the precast pile.

[0015] As a further scheme of the present invention, the cleaning plate is set as a V-groove arc-shaped plate and the angle of the V-groove is set to 90 degrees.

[0016] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: 1. In the present invention, the rotary motor drives the rotation of the rotating shaft, so that the installation cylinder swings reciprocally. The installation cylinder drives the precast pile to swing synchronously reciprocally by cooperating with the first clamping component and the second clamping component, which is convenient for expanding the gap between the side wall of the precast pile and the soil, effectively reducing the friction between the precast pile and the soil, facilitating the rapid extraction of the precast pile. The device has a small volume and is convenient for meeting the extraction treatment of precast piles at different positions; 2. In the present invention, after the first sliding column slides and cooperates with the second guiding chute, the reciprocating swing component continues to drive the installation cylinder to swing reciprocally. The installation cylinder drives the precast pile to swing synchronously by cooperating with the first clamping component and the second clamping component. At the same time, due to the fixed position of the movable plate, the second sliding column drives the second clamping plate to move along the track of the first guiding chute by sliding and cooperating with the first guiding chute, so as to realize the synchronization of the intermittent upward movement and the reciprocating swing of the precast pile, which is convenient for the rapid extraction of the precast pile; 3. In the present invention, the precast pile drives the remaining soil blocks to move upward synchronously. The cleaning plate scrapes the soil blocks remaining on the outer wall of the precast pile by being in movable contact with the outer wall of the precast pile, which is convenient for the subsequent stable clamping and extraction operations of the precast pile by the reciprocating swing component and the second clamping component. At the same time, it also avoids the cleaning operation after the precast pile is extracted, reduces the working steps, and improves the working efficiency.

[0017] To more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below in conjunction with the drawings and specific embodiments. Description of the Drawings

[0018] Figure 1 It is a three-dimensional view of the civil engineering pile extraction equipment in the embodiment of the invention.

[0019] Figure 2 It is a cross-sectional view of a civil engineering pile pulling device in an invention embodiment.

[0020] Figure 3 It is Figure 1 a partial enlarged view of the position A in

[0021] Figure 4 It is a cross-sectional view of the installation cylinder in an invention embodiment.

[0022] Figure 5 It is a schematic structural diagram of the first clamping assembly in an invention embodiment.

[0023] Figure 6 It is Figure 4 a partial enlarged view of the position B in

[0024] Figure 7 It is a schematic structural diagram of the movable plate in an invention embodiment.

[0025] Figure 8 It is a schematic structural diagram of the second sliding column in an invention embodiment.

[0026] Figure 9 It is a schematic structural diagram of the intermittent lifting assembly in an invention embodiment.

[0027] Figure 10 It is Figure 4 a partial enlarged view of the position C in

[0028] Reference numerals: 1. Bracket assembly; 101. Installation cylinder; 102. Support ring; 103. Outer bracket; 2. First clamping assembly; 201. L-shaped mounting seat; 202. L-shaped sliding tooth plate; 203. Hinge plate; 204. Gear part; 205. First clamping plate; 206. First column; 207. First retaining ring; 208. First spring; 3. Reciprocating swing assembly; 301. Rotary motor; 302. Rotating shaft; 303. Remnant gear; 304. Arc-shaped side plate; 305. Reciprocating tooth groove; 4. Second clamping assembly; 401. First cross bar; 402. Moving frame; 403. Abutting plate; 404. Guide rod; 405. Movable plate; 406. First guide chute; 407. Support sliding plate; 408. Connecting frame; 409. Second clamping plate; 410. Lifting ring cylinder; 411. First sliding column; 412. Chute; 413. Second sliding column; 414. Second spring; 5. Intermittent lifting assembly; 501. Electric cylinder; 502. Movable ring; 503. Block; 504. Moving plate; 505. Clamping groove; 506. Movable arc plate; 507. Second guide chute; 508. Second cross bar; 509. Third spring; 510. Connecting plate; 6. Cleaning component; 601. Square rod; 602. Second retaining ring; 603. Sliding plate; 604. Cleaning plate; 605. Fourth spring; 7. Prefabricated pile; 8. Ground. Specific implementation manner

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0031] In an embodiment of the present invention, referring to Figure 1 - Figure 2 , a pile extraction device for civil engineering, comprising a support assembly 1, the support assembly 1 includes an installation cylinder 101, upper and lower ends of the outer side of the installation cylinder 101 are rotatably sleeved with support rings 102, a plurality of outer supports 103 in contact with the ground 8 are circumferentially connected to the outer wall of the support ring 102, a reciprocating swing assembly 3 is provided between the installation cylinder 101 and one of the outer supports 103, four groups of first clamping assemblies 2 for clamping and positioning a prefabricated pile 7 are circumferentially distributed at the top inside the installation cylinder 101, a second clamping assembly 4 is provided inside the installation cylinder 101 below the reciprocating swing assembly 3, the second clamping assembly 4 is in active contact with the prefabricated pile 7, and an intermittent lifting assembly 5 in active cooperation with the second clamping assembly 4 is provided between the installation cylinder 101 and the outer support 103.

[0032] In this embodiment, through the first clamping assembly 2, the prefabricated pile 7 can be stably clamped and positioned. The reciprocating swing assembly 3 drives the prefabricated pile 7 to reciprocate synchronously by driving the installation cylinder 101 to reciprocate, the first clamping assembly 2 to be in contact with the prefabricated pile 7, and the second clamping assembly 4 to be in contact with the prefabricated pile 7, which can greatly relieve the contact between the side wall of the prefabricated pile 7 and the soil below the ground 8, and can greatly reduce the friction between the prefabricated pile 7 and the soil. The intermittent lifting assembly 5 realizes the reciprocating lifting of the second clamping assembly 4 by being in active cooperation with the second clamping assembly 4, and the second clamping assembly 4 drives the prefabricated pile 7 to move up synchronously by being in active contact with the prefabricated pile 7, so as to realize the intermittent upward movement of the prefabricated pile 7, which is convenient for the stable extraction of the prefabricated pile 7. Moreover, the device has a small volume, is convenient for meeting the extraction treatment of prefabricated piles at different positions, and has the effects of stable clamping, reciprocating swing, intermittent upward movement, reliable structure, convenient operation and simple and practical. Among them, the precast pile 7 can be a square rod or a cylindrical rod. Four outer brackets 103 can be provided, and through four groups of first clamping assemblies 2, the square rod or the cylindrical rod can be stably clamped. The number of the intermittent lifting assemblies 5 is the same as that of the second clamping assemblies 4.

[0033] In an embodiment of the present invention, referring to Figure 1 - Figure 4 , the reciprocating swing assembly 3 includes an arc-shaped side plate 304 arranged on the outer wall of the installation cylinder 101. A reciprocating tooth groove 305 is formed on the outer wall of the arc-shaped side plate 304. A rotary motor 301 is installed on the outer bracket 103, and an incomplete gear 303 that is movably engaged with the reciprocating tooth groove 305 is connected to the output end of the rotary motor 301.

[0034] In this embodiment, the rotary motor 301 drives the incomplete gear 303 to rotate by driving the rotation of the rotating shaft 302. The incomplete gear 303 drives the installation cylinder 101 to reciprocate swing by meshing with the reciprocating tooth groove 305 and the rotational cooperation between the installation cylinder 101 and the support ring 102. The installation cylinder 101 drives the precast pile 7 to reciprocate swing synchronously by cooperating with the first clamping assembly 2 and the second clamping assembly 4, which is convenient for expanding the gap between the side wall of the precast pile 7 and the soil, effectively reducing the friction between the precast pile 7 and the soil, and facilitating the rapid extraction of the precast pile 7.

[0035] In an embodiment of the present invention, referring to Figure 1 - Figure 5 , the first clamping assembly 2 includes an L-shaped mounting seat 201 fixedly installed on the inner wall of the installation cylinder 101. Two hinge plates 203 are rotatably connected to the L-shaped mounting seat 201. Gear parts 204 are provided at one ends of the hinge plates 203 close to the L-shaped mounting seat 201. An L-shaped sliding tooth plate 202 that meshes with the two gear parts 204 is slidably arranged on the L-shaped mounting seat 201. One ends of the hinge plates 203 far from the L-shaped mounting seat 201 are connected with first clamping plates 205, and the first clamping plates 205 are movably attached to the external edges of the precast pile 7. A first upright column 206 is installed at the bottom of the L-shaped mounting seat 201. One end of the first upright column 206 penetrates through the L-shaped sliding tooth plate 202 and is connected with a first retaining ring 207. A first spring 208 sleeved on the outside of the first upright column 206 is connected between the L-shaped mounting seat 201 and the L-shaped sliding tooth plate 202.

[0036] In this embodiment, in the initial state, the first spring 208 is in the primary compression state, the first clamping plates 205 are attached to the two side walls of the precast pile 7, and the included angle between the hinge plates 203 and the L-shaped sliding tooth plate 202 is at the maximum value. Since the length of the hinge plates 203 is fixed, at this time, the precast pile 7 can be clamped and positioned by being attached to the outer side wall of the precast pile 7, and the first clamping plates 205 are downward due to the friction force of the precast pile 7. When the precast pile 7 moves upward, the friction force direction between the precast pile 7 and the first clamping plate 205 is opposite to the previous direction. At this time, the precast pile 7 pushes the first clamping plate 205 to move upward by means of friction with the first clamping plate 205, releasing the positioning of the precast pile 7. At the same time, the first clamping plate 205 drives the hinged plate 203 to rotate upward. The hinged plate 203 pushes the L-shaped sliding tooth plate 202 to move downward by being connected to the gear part 204 and the gear part 204 meshing with the L-shaped sliding tooth plate 202. The first spring 208 is stressed and contracts. At this time, the first spring 208 is in a deeply compressed state. In this state, it can ensure the active fit between the first clamping plate 205 and the precast pile 7; After the upward movement of the precast pile 7 ends, the friction force direction between the precast pile 7 and the first clamping plate 205 is restored. The first spring 208 elongates upward and pushes the L-shaped sliding tooth plate 202 to move upward. The L-shaped sliding tooth plate 202 drives the first clamping plate 205 to rotate downward by meshing with the gear part 204 and the hinged plate 203 rotatingly cooperating with the L-shaped mounting seat 201. At the same time, due to the fixed length of the hinged plate 203, the hinged plate 203 reduces the area enclosed by the four first clamping plates 205 by driving the first clamping plate 205 to rotate downward synchronously, so that the first clamping plate 205 is in close contact with the side wall of the precast pile 7, thereby realizing the re-clamping and positioning of the precast pile 7 and facilitating the intermittent upward movement of the precast pile 7; Among them, the two hinged plates 203 are distributed up and down on the L-shaped mounting seat 201. The first clamping plate 205 is set as a right-angled plate and the two side walls of the first clamping plate 205 are set as rough surfaces. When the precast pile 7 is a square rod, the two side walls of the first clamping plate 205 can be in contact with the corresponding two side walls of the precast pile 7 to expand the contact area of the precast pile 7. When the precast pile 7 is a cylindrical rod, the two side walls of the four first clamping plates 205 can perform multi-line clamping on the outer wall of the precast pile 7 to improve the clamping effect.

[0037] In an embodiment of the present invention, refer to Figure 1 - Figure 9 , the second clamping assembly 4 includes four first cross bars 401 circumferentially arranged on the inner wall of the mounting cylinder 101. A moving frame 402 is slidably arranged on the first cross bar 401. One end of the moving frame 402 away from the inner wall of the mounting cylinder 101 is provided with an abutting plate 403 that abuts against the outer wall of the precast pile 7. A guide rod 404 connected to the corresponding first clamping plate 205 is slidably connected to the abutting plate 403. The bottom of the moving frame 402 is connected with a movable plate 405. First guide chutes 406 are symmetrically arranged on both sides of the movable plate 405. A lifting ring cylinder 410 is slidably arranged on the inner wall of the mounting cylinder 101. An active clamping module matching with the first guide chutes 406 is arranged in the lifting ring cylinder 410. A plurality of chutes 412 are circumferentially opened on the outer wall of the mounting cylinder 101. A first sliding column 411 connected to the lifting ring cylinder 410 is slidably arranged in the chutes 412; The movable clamping module includes four pairs of support sliding plates 407 arranged on the inner wall of the lifting ring cylinder 410. Each pair of support sliding plates 407 is correspondingly distributed with respect to the corresponding movable plate 405. A connecting frame 408 is slidably arranged on the support sliding plate 407. One end of each pair of connecting frames 408 away from the support assembly 1 (support assembly 10) is connected with a second clamping plate 409 that is movably attached to the outer wall of the precast pile 7. A second sliding column 413 is slidably arranged on the side of the connecting frame 408 close to the movable plate 405. The outer end of the second sliding column 413 is slidably matched with the first guiding chute 406. A second spring 414 is connected between the other end of the second sliding column 413 and the inner wall of the connecting frame 408; The intermittent lifting assembly 5 includes a movable ring 502 slidably arranged on the inner side walls of a plurality of outer supports 103. An electric cylinder 501 is connected between one of the outer supports 103 and the movable ring 502. A plurality of blocks 503 are circumferentially distributed at the bottom of the movable ring 502. A movable plate 504 and a second cross bar 508 are slidably arranged on the outer support 103. One end of the movable plate 504 and the second cross bar 508 close to the mounting cylinder 101 is connected with a movable arc plate 506. A second guiding chute 507 that is slidably matched with the first sliding column 411 is formed on the side of the movable arc plate 506 close to the support assembly 1 (support assembly 10). One end of the movable plate 504 and the second cross bar 508 away from the mounting cylinder 101 is connected through a connecting plate 510. A third spring 509 sleeved on the outer side of the second cross bar 508 is connected between the movable arc plate 506 and the outer support 103. A clamping groove 505 that is movably matched with the block 503 is arranged at one end of the movable plate 504 close to the movable arc plate 506.

[0038] In this embodiment, in the initial state, the second sliding column 413 is matched with the lowest end of the first guiding chute 406, the first sliding column 411 is located at the lowest end of the chute 412, the block 503 is matched with the movable plate 504, the third spring 509 is in a compressed state, and the movable arc plate 506 is away from the mounting cylinder 101, that is, the movable arc plate 506 does not contact the first sliding column 411. When the first clamping plate 205 is attached to the outer wall of the precast pile 7, the first clamping plate 205 drives the abutting plate 403 to abut against the outer wall of the precast pile 7 by means of being connected with the guide rod 404 and the first cross bar 401 being slidably matched with the movable frame 402. The abutting plate 403 drives the movable plate 405 to move synchronously by means of being connected with the movable frame 402. The movable plate 405 drives the second clamping plate 409 to be attached to the outer wall of the precast pile 7 by means of being matched with the second sliding column 413 through the first guiding chute 406 and the support sliding plate 407 being slidably matched with the connecting frame 408, so as to realize double clamping of the precast pile 7; First, the rotary motor 301 drives the remaining gear 303 to rotate by rotating the drive shaft 302. The remaining gear 303 drives the mounting cylinder 101 to reciprocate by meshing with the reciprocating tooth groove 305 and the rotational cooperation between the mounting cylinder 101 and the support ring 102. The mounting cylinder 101 drives the precast pile 7 to reciprocate synchronously through the cooperation of the first clamping assembly 2 and the second clamping assembly 4, which can reduce the contact area between the precast pile 7 and the soil and facilitate the extraction of the precast pile 7; Then, after the initial reciprocating swing of the precast pile 7 is completed, the electric cylinder 501 contracts upward and drives the block 503 to move upward through the sliding cooperation between the movable ring 502 and the outer bracket 103. The block 503 releases the positioning of the moving plate 504 by moving away from the clamping groove 505. The third spring 509 extends and drives the movable arc plate 506 to approach the mounting cylinder 101 through the sliding cooperation between the moving plate 504 and the outer bracket 103, so that the first sliding column 411 and the second guiding chute 507 are in sliding cooperation. At this time, the position of the movable arc plate 506 is fixed; Next, the reciprocating swing assembly 3 continues to drive the mounting cylinder 101 to reciprocate. The mounting cylinder 101 drives the precast pile 7 to swing synchronously through the cooperation with the first clamping assembly 2 and the second clamping assembly 4. At the same time, in the first stage of the swing of the mounting cylinder 101, the mounting cylinder 101 rotates counterclockwise. Due to the fixed position of the movable arc plate 506, the mounting cylinder 101 drives the lifting ring cylinder 410 and the first sliding column 411 to move relatively upward through the sliding cooperation between the mounting cylinder 101 and the lifting ring cylinder 410, the sliding cooperation between the first sliding column 411 and the chute 412, and the sliding cooperation between the first sliding column 411 and the second guiding chute 507. The lifting ring cylinder 410 drives the second clamping plate 409 to move upward synchronously through the sliding cooperation between the supporting sliding plate 407 and the connecting frame 408. Due to the fixed position of the movable plate 405, the second clamping plate 409 pushes the precast pile 7 to move upward by fitting with the side wall of the precast pile 7 and the sliding cooperation between the second sliding column 413 and the first guiding chute 406. Among them, the second sliding column 413 and the first guiding chute 406 are in sliding cooperation on the side close to the precast pile 7; When the second sliding column 413 slides to the highest point of the first guiding chute 406, at this time, the swinging amplitude of the mounting cylinder 101 reaches the maximum value. At this time, the first stage of the swinging of the mounting cylinder 101 ends. In the second stage of the swinging of the mounting cylinder 101, the mounting cylinder 101 rotates clockwise. The mounting cylinder 101 drives the lifting ring cylinder 410 and the first sliding column 411 to move downward relative to each other by means of the sliding fit between the lifting ring cylinder 410 and the mounting cylinder 101, the sliding fit between the first sliding column 411 and the chute 412, and the sliding fit between the first sliding column 411 and the second guiding chute 507. The lifting ring cylinder 410 drives the second clamping plate 409 to move downward synchronously by means of the sliding fit between the supporting sliding plate 407 and the connecting frame 408. Since the position of the movable plate 405 is fixed, the second clamping plate 409 drives the connecting frame 408 away from the precast pile 7 by means of the sliding fit between the second sliding column 413 and the side of the first guiding chute 406 away from the precast pile 7. The connecting frame 408 releases the fit between the second clamping plate 409 and the outer wall of the precast pile 7 by being connected to the second clamping plate 409. When the second sliding column 413 slides to the lowest end of the first guiding chute 406, the second clamping plate 409 fits again with the outer wall of the precast pile 7, which is convenient for the subsequent upward pushing operation of the precast pile 7, so as to realize the synchronization of the intermittent upward movement and the reciprocating swing of the precast pile 7, and is convenient for the rapid extraction of the precast pile 7; Wherein, the first guiding chute 406 is arranged as a trapezoidal ring groove. The depth of the lowest end of the first guiding chute 406 is greater than the depth of the left low end of the first guiding chute 406, and the depth of the highest end of the first guiding chute 406 is less than the depth of the left high end of the first guiding chute 406. Through the above depth setting and the connection between the second sliding column 413 and the second spring 414, it can be ensured that the second sliding column 413 can be in sliding fit with the first guiding chute 406 at different positions, and the second sliding column 413 can slide unidirectionally in a cycle along the track of the first guiding chute 406, so as to ensure the close fit between the second clamping plate 409 and the precast pile 7 and realize the stable upward movement of the precast pile 7; An elastic layer is provided on the side of the second clamping plate 409 close to the precast pile 7. The elastic layer can be a rubber layer. By providing the elastic layer, it can be ensured that the second clamping plate 409 is in close fit with the precast pile 7 during the upward movement of the precast pile 7. The second clamping plate 409 is arranged as a right-angle plate, which can meet the clamping requirements of precast piles 7 of different shapes.

[0039] In an embodiment of the present invention, refer to Figure 1 - Figure 10 , a cleaning assembly 6 that is in movable contact with the outer wall of the precast pile 7 is further provided at the bottom of the mounting cylinder 101; The cleaning component 6 includes a number of square rods 601 circumferentially distributed at the inner bottom of the installation cylinder 101. One end of the square rod 601 away from the inner wall of the installation cylinder 101 is provided with a second retaining ring 602. A sliding plate 603 is slidably arranged on the square rod 601. A fourth spring 605 sleeved outside the square rod 601 is connected between the sliding plate 603 and the installation cylinder 101. The bottom of the sliding plate 603 is connected with a cleaning plate 604 which is in movable contact with the outer wall of the precast pile 7.

[0040] In this embodiment, in the initial state, the bottom of the cleaning plate 604 is in contact with the outer wall of the precast pile 7. During the intermittent upward movement of the precast pile 7, there may still be soil blocks remaining on the surface of the precast pile 7 in contact with the soil. If the soil blocks are not effectively cleaned, the reciprocating swing component 3 and the second clamping component 4 cannot be in an effective fitting state with the outer wall of the precast pile 7, affecting the stability of clamping and upward movement of the precast pile 7. Through the fourth spring 605, it can be ensured that the bottom end of the cleaning plate 604 remains in contact with the outer wall of the precast pile 7. The precast pile 7 drives the remaining soil blocks to move upward synchronously. The cleaning plate 604 scrapes the soil blocks remaining on the outer wall of the precast pile 7 by being in movable contact with the outer wall of the precast pile 7, facilitating the subsequent stable clamping and pulling-out operations of the reciprocating swing component 3 and the second clamping component 4 on the precast pile 7. At the same time, it also avoids the cleaning operation after the precast pile 7 is pulled out, reduces the working steps, and improves the working efficiency. Among them, the cleaning plate 604 is set as a V-groove arc plate and the angle of the V-groove is set to 90 degrees. Through the setting of the V-groove, the movable contact between the cleaning plate 604 and the outer wall of the precast pile 7 can be realized, facilitating the rapid scraping of the soil blocks remaining on the surface of the precast pile 7. Through the setting of the arc plate, the scraped soil blocks are facilitated to be exported to the outside of the installation cylinder 101, avoiding the accumulation of soil blocks at the bottom of the installation cylinder 101 and facilitating the continuous scraping of the soil blocks remaining on the surface of the precast pile 7.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A civil engineering pile extraction device, comprising a support assembly, characterized in that, The bracket assembly includes an installation cylinder. At the upper and lower ends of the outer side of the installation cylinder, support rings are rotatably sleeved. A number of outer brackets in contact with the ground are circumferentially connected to the outer wall of the support ring. A reciprocating swing assembly is provided between the installation cylinder and one of the outer brackets. Four groups of first clamping assemblies for clamping and positioning precast piles are circumferentially distributed at the top inside the installation cylinder. A second clamping assembly is provided inside the installation cylinder below the reciprocating swing assembly. The second clamping assembly is in movable fit with the precast pile. An intermittent lifting assembly that is in movable cooperation with the second clamping assembly is provided between the installation cylinder and the outer bracket.

2. The civil engineering pile extraction equipment according to claim 1, characterized in that, The reciprocating swing assembly includes an arc-shaped side plate provided on the outer wall of the installation cylinder. A reciprocating tooth groove is provided on the outer wall of the arc-shaped side plate. A rotary motor is installed on the outer bracket. The output end of the rotary motor is connected to a stub gear that is in movable engagement with the reciprocating tooth groove.

3. The civil engineering pile extraction equipment according to claim 1, characterized in that, The first clamping assembly includes an L-shaped mounting seat fixedly installed on the inner wall of the installation cylinder. Two hinge plates are rotatably connected to the L-shaped mounting seat. Gear parts are provided at one end of the hinge plates close to the L-shaped mounting seat. An L-shaped sliding tooth plate that meshes with the two gear parts is slidably provided on the L-shaped mounting seat. A first clamping plate is connected to the end of the hinge plate far from the L-shaped mounting seat. The first clamping plate is in movable fit with the outer edge of the precast pile. A first upright post is installed at the bottom of the L-shaped mounting seat. One end of the first upright post penetrates through the L-shaped sliding tooth plate and is connected to a first retaining ring. A first spring sleeved on the outer side of the first upright post is connected between the L-shaped mounting seat and the L-shaped sliding tooth plate.

4. The civil engineering pile extraction device according to claim 3, characterized in that, The second clamping assembly includes four first cross bars circumferentially arranged on the inner wall of the installation cylinder. A moving frame is slidably provided on the first cross bar. A contact plate that abuts against the outer wall of the precast pile is installed at the end of the moving frame far from the inner wall of the installation cylinder. A guide rod connected to the corresponding first clamping plate is slidably connected to the contact plate. A movable plate is connected to the bottom of the moving frame. First guide chutes are symmetrically arranged on both sides of the movable plate. A lifting ring cylinder is slidably provided on the inner wall of the installation cylinder. An active clamping module that cooperates with the first guide chute is provided inside the lifting ring cylinder. A number of chutes are circumferentially provided on the outer wall of the installation cylinder. A first sliding column connected to the lifting ring cylinder is slidably provided in the chute.

5. The civil engineering pile extraction equipment according to claim 4, characterized in that, The active clamping module includes four pairs of support sliding plates provided on the inner wall of the lifting ring cylinder. Each pair of support sliding plates is correspondingly distributed with respect to the corresponding movable plate. A connecting frame is slidably provided on the support sliding plate. A second clamping plate that is in movable fit with the outer wall of the precast pile is connected to the end of each pair of connecting frames far from the bracket assembly. A second sliding column is slidably provided on the side of the connecting frame close to the movable plate. The outer end of the second sliding column is in sliding fit with the first guide chute. A second spring is connected between the other end of the second sliding column and the inner wall of the connecting frame.

6. The civil engineering pile extraction device according to claim 4, characterized in that, The intermittent lifting assembly includes a movable ring slidably arranged on the inner side walls of several outer brackets. An electric cylinder is connected between one of the outer brackets and the movable ring. A plurality of clamping blocks are circumferentially distributed at the bottom of the movable ring. A movable plate and a second cross bar are slidably arranged on the outer bracket. One ends of the movable plate and the second cross bar close to the installation cylinder are connected with a movable arc plate. A second guiding chute slidably matched with the first sliding column is arranged on one side of the movable arc plate close to the bracket assembly. One ends of the movable plate and the second cross bar far from the installation cylinder are connected through a connecting plate. A third spring sleeved on the outer side of the second cross bar is connected between the movable arc plate and the outer bracket. A clamping groove movably matched with the clamping block is arranged at one end of the movable plate close to the movable arc plate.

7. The civil engineering pile extraction equipment according to claim 1, characterized in that, A cleaning assembly that is movably in contact with the outer wall of the precast pile is further arranged at the bottom of the installation cylinder; The cleaning assembly includes a plurality of square rods circumferentially distributed at the inner bottom of the installation cylinder. A second retaining ring is arranged at one end of the square rod far from the inner wall of the installation cylinder. A sliding plate is slidably arranged on the square rod. A fourth spring sleeved on the outer side of the square rod is connected between the sliding plate and the installation cylinder. A cleaning plate that is movably in contact with the outer wall of the precast pile is connected to the bottom of the sliding plate.

8. The civil engineering pile extraction device according to claim 4, characterized in that, The first guiding chute is a trapezoidal ring groove. The depth of the lowest end of the first guiding chute is greater than the depth of the left low end of the first guiding chute. The depth of the highest end of the first guiding chute is less than the depth of the left high end of the first guiding chute.

9. The civil engineering pile extraction equipment according to claim 5, characterized in that, The second clamping plate is a right-angle plate. An elastic layer is arranged on one side of the second clamping plate close to the precast pile.

10. The civil engineering pile extraction device according to claim 7, characterized in that, The cleaning plate is a V-groove arc-shaped plate and the angle of the V-groove is 90 degrees.

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