Rapid mechanical breaking device and method for pile head of cast-in-place pile

Abstract

The invention relates to the field of pile head mechanical breaking devices, and discloses a rapid mechanical breaking device and method for a cast-in-place pile head, the rapid mechanical breaking device comprises a top plate and a hydraulic cylinder, the bottom end of the top plate is fixedly connected with a plurality of steel wire ropes, the bottom ends of the two steel wire ropes are fixedly connected with fixing plates, and adjusting mechanisms are arranged on the close sides of the two fixing plates; a hydraulic cylinder is arranged in the top plate, an impact mechanism is arranged at the top end of the hydraulic cylinder, a positioning mechanism is arranged in the top plate, the hydraulic cylinder is connected with a console through a conveying pipe, the impact mechanism comprises a second fixing box, and the bottom end of the second fixing box is fixedly connected to the top end of the hydraulic cylinder. After crushing is finished, a hydraulic cylinder drives a fiber rod to return, a clamp pushes an impact column to enable a moving block to slide in a second fixing box, after the fiber rod returns, a control block slides downwards to be clamped in the second fixing box due to gravity to lock the moving block to achieve energy storage, preparation is made for next crushing, and the crushing efficiency of the device is improved through automatic energy storage and impact assistance.

Description

Technical Field

[0001] This invention relates to the field of mechanical pile head breaking devices, specifically to a rapid mechanical breaking device and method for cast-in-place pile heads. Background Technology

[0002] In the foundation or deep foundation pit support structures of bridges, high-rise buildings, subways, and building construction projects, the pile heads of cast-in-place piles are often located in complex construction site environments, facing challenges such as limited space and high concrete strength. Because cast-in-place piles require over-pouring by 0.5-1.0m during construction to ensure pile head quality, the over-pouring portion must be removed subsequently. However, manual removal methods are difficult to balance efficiency, accuracy, and safety when dealing with a large number of pile heads, high-strength concrete, or complex conditions. Therefore, mechanical removal devices are needed to meet the requirements of efficient, precise, and safe pile head removal in engineering projects.

[0003] A mechanical breaking device for cast-in-place pile heads typically consists of a fixing mechanism, a driving mechanism, a breaking mechanism, and a control system. The fixing mechanism securely holds the pile body to ensure stability during operation. The driving mechanism provides power to the breaking mechanism, which contacts the pile head through its cutting tools or breaker hammer. The control system is used to adjust the operating parameters of each mechanism. Its working principle is as follows: the fixing mechanism first fixes the pile body, and then the control system starts the driving mechanism, which drives the breaking mechanism to cut or break the over-filled portion of the pile head, thereby achieving precise and efficient breaking of the pile head.

[0004] Currently, some mechanical breaking devices for cast-in-place pile heads rely solely on the impact of the sprue rod on the pile body. The insufficient impact force leads to slow propagation of micro-cracks inside the concrete, resulting in poor breaking effect. Furthermore, they cannot automatically store energy to assist in subsequent breaking, resulting in low overall breaking efficiency. Therefore, a rapid mechanical breaking device and method for cast-in-place pile heads is proposed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a rapid mechanical breaking device and method for cast-in-place pile heads, which solves the problems of existing devices relying solely on simple impact from the sprue, resulting in insufficient impact force and poor breaking effect, as well as the inability to automatically store energy to assist in subsequent breaking and low overall efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a rapid mechanical breaking device for the pile head of a cast-in-place pile, comprising a top plate and a hydraulic cylinder, wherein multiple steel wire ropes are fixedly connected to the bottom end of the top plate, and a fixing plate is fixedly connected to the bottom end of each of the two steel wire ropes, and an adjustment mechanism is provided on the adjacent side of the two fixing plates, an impact mechanism is provided at the top of the hydraulic cylinder, a positioning mechanism is provided inside the top plate, and the hydraulic cylinder is connected to a control console through a delivery pipe; The impact mechanism includes a second fixed box, the bottom of which is fixedly connected to the top of the hydraulic cylinder. A moving block is slidably connected inside the second fixed box, and a second spring is fixedly connected inside the second fixed box. An impact column is fixedly connected to the end of the moving block away from the second spring. A control block is slidably connected inside the second fixed box. A scissor rod is fixedly connected to the drive end of the hydraulic cylinder. A clamp is fixedly connected to the outside of the scissor rod, and a drive assembly is provided on the outside of the clamp.

[0007] Preferably, the end of the second spring away from the inner wall of the second fixed box is fixedly connected to the inside of the moving block, the outside of the impact column is in contact with the outside of the clamp, and the bottom end of the hydraulic cylinder is fixedly connected to the top of the fixed plate.

[0008] Preferably, the moving block has a sliding groove inside, and the control block is slidably connected to the inside of the sliding groove.

[0009] Preferably, the driving assembly includes a sliding rod, which is externally fixedly connected to the outside of the clamp, a positioning block is externally fixedly connected to the outside of the fixing box, and a guide block is fixedly connected to the top of the sliding rod.

[0010] Preferably, the outer side of the sliding rod is slidably connected to the inside of the positioning block, and the outer side of the guide block is in contact with the outer side of the control block.

[0011] Preferably, the positioning mechanism includes a motor, a drive gear is fixedly connected to the drive end of the motor, a driven gear is rotatably connected inside the top plate, the driven gear is meshed with the drive gear, a plurality of sliding columns are slidably connected inside the driven gear, a second sliding rod is rotatably connected to the top of the sliding column, and a clamping block is fixedly connected to the bottom end of the second sliding rod.

[0012] Preferably, the driven gear has multiple arc-shaped grooves inside, and the sliding rod 2 is externally slidably connected to the inside of the top plate.

[0013] Preferably, the adjusting mechanism includes an inner plate and an outer plate. The outer plate is rotatably connected to the outside of one of the fixed plates, and the outer plate is rotatably connected to the outside of the other fixed plate. A fixing box is fixedly connected to the top of the outer plate. A sliding plate is slidably connected inside the fixing box. A connecting post is fixedly connected to the top of the sliding plate. A spring is sleeved on the outside of the connecting post. A control handle is fixedly connected to the top of the connecting post. A limiting post is fixedly connected to the bottom of the sliding plate.

[0014] Preferably, the inner plate has multiple limiting grooves inside, the limiting post is slidably connected to the inside of the limiting groove, the top end of the first spring is fixedly connected to the inside of the first fixing box, the bottom end of the first spring is fixedly connected to the top end of the sliding plate, the connecting post is slidably connected to the inside of the first fixing box, and a baffle is fixedly connected to the outside of the first fixing box.

[0015] The method of using the above-mentioned rapid mechanical breaking device for cast-in-place pile heads includes the following steps: S1. Positioning and Alignment Steps: Using a lifting device, the breaking device is moved above the pile to be broken. The pile breaking machine is lowered and inserted into the pile until the top plate contacts the top of the pile to achieve initial positioning. The motor in the positioning mechanism is started, driving the drive gear to rotate, which in turn drives multiple sliding columns to slide in the arc groove. This causes the sliding rod to pull the clamping block to move. Through the multiple clamping blocks, the column is clamped, and the automatic alignment of the device and the column is completed. s2. Radius adjustment steps: When it is necessary to break the pile heads of grouting piles with different radii, pull the control handle to make the connecting column drive the sliding plate to slide in the fixed box one, so that the limiting column slides out of the limiting groove. Adjust the position of the inner plate inside the outer plate to change the breaking radius. After the adjustment is completed, release the control handle so that the spring one pushes the sliding plate to slide in the opposite direction, so that the limiting column slides back into the limiting groove and locks the relative position of the inner plate and the outer plate.

[0016] S3. Crushing Operation Steps: After the equipment is fixed, the hydraulic cylinder is started to drive the derrick to impact the column. The clamp moves with the derrick to hold and transport the crushed column. During the derrick's drilling process, the clamp pulls the sliding rod one to slide in the positioning block, and the guide block pushes the control block to slide in the sliding groove. After the control block is in place, the compressed spring two pushes the moving block to make the impact column hit the clamp, providing impact force to the derrick to improve the crushing effect. After crushing, the hydraulic cylinder drives the derrick to return, and the clamp pushes the impact column to make the moving block slide in the fixed box two. After the derrick returns, the control block slides down due to gravity and gets stuck in the fixed box two, locking the moving block to store energy and prepare for the next crushing impact.

[0017] This invention provides a device and method for rapid mechanical breaking of the pile head in cast-in-place piles. It has the following beneficial effects: 1. In this invention, when the crushing device is working, the hydraulic cylinder drives the derrick to impact the column, and the clamp moves with the derrick to clamp and transport the crushed column; during the derrick's drilling process, the clamp pulls the sliding rod one to slide in the positioning block, the guide block pushes the control block to slide in the sliding groove to the designated position, and the compressed spring two pushes the moving block to make the impact column hit the clamp, providing impact force to the derrick, promoting the expansion of micro-cracks inside the concrete, and improving the crushing effect; after crushing, the hydraulic cylinder drives the derrick to return, and the clamp pushes the impact column to make the moving block slide in the fixed box two. After the derrick returns, the control block slides down due to gravity and locks the moving block in the fixed box two to realize energy storage, preparing for the next crushing. Through automatic energy storage and impact assistance, the crushing efficiency of the device is improved.

[0018] 2. When breaking the pile head of a cast-in-place pile, this invention uses a lifting machine to move the device above the pile and fit it in. The top plate contacts the top of the pile to achieve positioning. The positioning mechanism is activated, and the motor drives the drive gear to rotate, causing the sliding column to slide in the arc groove. This causes the sliding rod to pull the clamping block to clamp the column, completing automatic centering. This reduces the reliance on operator experience and improves operational safety and standardization. After the equipment is fixed, the distance between the spur rod and the pile surface is consistent. When it extends synchronously, the pressure is evenly applied to the circumference of the pile, generating a flat and controllable annular stress, causing the pile to break neatly at the specified elevation, ensuring ideal breaking effect.

[0019] 3. When the present invention needs to crush pile heads of different radii, pulling the control handle drives the sliding plate to slide in the fixed box through the connecting column, so that the limiting column slides out of the limiting groove, thereby adjusting the position of the inner plate in the outer plate to change the crushing radius; after the adjustment is completed, the control handle is released, the spring pushes the sliding plate to slide in the opposite direction, so that the limiting column slides back into the limiting groove to lock the state of the inner plate and the outer plate, realizing rapid adjustment, meeting the needs of different scenarios, and improving the crushing efficiency of the device. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the top plate of the present invention; Figure 3 This is a schematic diagram of the baffle of the present invention; Figure 4 This is a schematic diagram of the structure of the fixing plate of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the fiber rod structure of the present invention; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic diagram of the driven gear of the present invention.

[0021] The components are as follows: 1. Top plate; 2. Steel wire rope; 3. Fixing plate; 4. Adjustment mechanism; 41. Inner plate; 42. Outer plate; 43. Fixing box one; 44. Sliding plate; 45. Connecting column; 46. Spring one; 47. Control handle; 48. Limiting groove; 49. Limiting column; 5. Hydraulic cylinder; 6. Impact mechanism; 61. Fixing box two; 62. Moving block; 63. Impact column; 64. Spring two; 65. Control block; 66. Sliding groove; 67. Drive assembly; 671. Sliding rod one; 672. Positioning block; 673. Guide block; 7. Positioning mechanism; 71. Motor; 72. Driving gear; 73. Driven gear; 74. Sliding column; 75. Arc groove; 76. Sliding rod two; 77. Clamping block; 8. Fiber rod; 9. Fixture; 10. Baffle; 11. Control console. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 Appendix Figure 6 and attached Figure 7 This invention provides a rapid mechanical breaking device for cast-in-place pile heads, comprising a top plate 1 and hydraulic cylinders 5. Multiple steel wire ropes 2 are fixedly connected to the bottom end of the top plate 1, providing the installation foundation for the device. The steel wire ropes 2 connect the top plate 1 to a fixed plate 3, achieving suspension and support between components. The hydraulic cylinders 5 are assembled modularly by hinges using six or more hydraulic cylinders of the same specification arranged in a ring and connected to a hydraulic valve control console 11. Utilizing the low tensile strength of concrete, the device achieves breakage through multiple simultaneous compressions. Fixed plates 3 are fixedly connected to the bottom ends of both steel wire ropes 2, providing an installation platform for components such as the hydraulic cylinders 5 and ensuring structural stability. Adjustment mechanisms 4 are provided on adjacent sides of the two fixed plates 3, allowing adjustment of the device's breaking radius to accommodate piles of different specifications. An impact mechanism 6 is provided at the top of the hydraulic cylinders 5, enhancing the impact force of the tie rod 8 on the pile and improving the breaking effect. A positioning mechanism 7 is provided inside the top plate 1, enabling automatic alignment of the device with the pile and improving operational accuracy. The hydraulic cylinder 5 is connected to the control console 11 via a delivery pipe. The control console 11 can control the operation of the hydraulic cylinder 5 to achieve automated operation. The impact mechanism 6 includes a fixed box 61, the bottom of which is fixedly connected to the top of the hydraulic cylinder 5. The fixed box 61 provides installation space for components such as the moving block 62 and the spring 64, ensuring stable operation of the impact mechanism 6. The moving block 62 is slidably connected inside the fixed box 61, allowing it to slide and drive the impact column 63 to achieve the impact action. The spring 64 is also fixedly connected inside the fixed box 61, storing elastic potential energy to provide impact force for the moving block 62. The impact column 63 is fixedly connected to the end of the moving block 62 furthest from the spring 64, impacting the clamp 9 and transmitting the impact force to the fiber rod 8. A control block 65 is slidably connected inside the fixed box 61, controlling the sliding state of the moving block 62 and switching between energy storage and impact. The fiber rod 8 is fixedly connected to the drive end of the hydraulic cylinder 5, impacting the pile body under the drive of the hydraulic cylinder 5 to achieve crushing. A clamp 9 is fixedly connected to the outside of the fiber rod 8. The clamp 9 can move with the fiber rod 8 to clamp and transport the broken pile. A drive assembly 67 is provided on the outside of the clamp 9. The drive assembly 67 can drive the control block 65 to move and trigger the impact action. The end of the second spring 64 away from the inner wall of the second fixed box 61 is fixedly connected to the inside of the moving block 62. The elastic force of the second spring 64 can push the moving block 62 to slide quickly and generate impact force. The outside of the impact column 63 is in contact with the outside of the clamp 9 to ensure that the impact force of the impact column 63 can be transmitted to the clamp 9 and the fiber rod 8. The bottom end of the hydraulic cylinder 5 is fixedly connected to the top of the fixed plate 3 to ensure that the hydraulic cylinder 5 is installed firmly. A sliding groove 66 is opened inside the moving block 62. The sliding groove 66 provides sliding space for the control block 65 to adjust its position. The outside of the control block 65 is slidably connected to the inside of the sliding groove 66, so that the control block 65 can slide flexibly to control the moving block 62. The drive assembly 67 includes a sliding rod 671, which is externally fixed to the outside of the clamp 9. The sliding rod 671 can move with the clamp 9, driving the guide block 673 to move. A positioning block 672 is externally fixed to the fixed box 61, providing sliding guidance for the sliding rod 671 to ensure smooth movement. The top of the sliding rod 671 is fixedly connected to the guide block 673, which can push the control block 65 to slide, triggering the action of the impact mechanism 6. The outside of the sliding rod 671 is slidably connected to the inside of the positioning block 672, ensuring smooth sliding of the sliding rod 671. The outside of the guide block 673 contacts the outside of the control block 65, enabling the guide block 673 to effectively push the control block 65 to move.

[0024] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 8The positioning mechanism 7 includes a motor 71, which provides driving force to ensure the centering action. A drive gear 72 is fixedly connected to the drive end of the motor 71, allowing the drive gear 72 to rotate under the drive of the motor 71 and transmit power. A driven gear 73 is rotatably connected inside the top plate 1, and multiple sliding columns 74 are slidably connected inside the driven gear 73. A second sliding rod 76 is rotatably connected to the top of each sliding column 74. The driven gear 73 and the drive gear 72 are meshed, allowing the driven gear 73 to rotate under the drive of the drive gear 72, transmitting power to the sliding columns 74. The sliding columns 74 can slide within the driven gear 73, causing the second sliding rod 76 to move. The second sliding rod 76 can pull the clamping block 77 to move, achieving clamping of the pile. A clamping block 77 is fixedly connected to the bottom end of the second sliding rod 76; multiple clamping blocks 77 cooperate to clamp the pile, achieving automatic centering of the device. The driven gear 73 has multiple arc-shaped grooves 75 inside, which provide a sliding path for the sliding column 74 and guide the movement direction of the sliding column 74. The external sliding rod 76 is slidably connected to the inside of the top plate 1 to ensure the sliding stability of the sliding rod 76 and ensure the precise movement of the clamping block 77.

[0025] Please see the appendix Figures 3 to 5The adjusting mechanism 4 includes an inner plate 41 and an outer plate 42. The outer plate 41 is rotatably connected to the outside of one of the fixed plates 3, and the outer plate 42 is rotatably connected to the outside of the other fixed plate 3. The inner plate 41 and the outer plate 42 can be adjusted in length to change the crushing radius of the device. A fixed box 43 is fixedly connected to the top of the outer plate 42. The fixed box 43 provides installation space for components such as the sliding plate 44 and the spring 46, ensuring the stable operation of the adjusting mechanism 4. The sliding plate 44 is slidably connected inside the fixed box 43. The sliding plate 44 can slide within the fixed box 43, driving the limiting column 49 to move. A connecting column 45 is fixedly connected to the top of the sliding plate 44. The connecting column 45 can connect the sliding plate 44 to the control handle 47 to transmit operating force. A spring 46 is sleeved on the outside of the connecting column 45. The spring 46 can push the sliding plate 44 to reset, realizing the locking of the limiting column 49 on the inner and outer plates 42. A control handle 47 is fixedly connected to the top of the connecting column 45, allowing the operator to easily pull the connecting column 45 to control the adjustment and locking of the adjusting mechanism 4. A limiting column 49 is fixedly connected to the bottom of the sliding plate 44, which can be inserted into the limiting slot 48 to lock the relative position of the inner plate 41 and the outer plate 42. Multiple limiting slots 48 are provided inside the inner plate 41, providing insertion space for the limiting column 49. Different locking positions are achieved through cooperation with the limiting column 49. The external part of the limiting column 49 is slidably connected inside the limiting slot 48, ensuring smooth insertion and disengagement. The top of the spring 46 is fixedly connected inside the fixing box 43, and the bottom of the spring 46 is fixedly connected to the top of the sliding plate 44, allowing the spring 46 to stably provide elastic force to push the sliding plate 44 back to its original position. The external part of the connecting column 45 is slidably connected inside the fixing box 43, ensuring smooth sliding of the connecting column 45 and facilitating operator control. The fixed box 43 is externally fixedly connected to a baffle 10, which can limit the sliding range of the connecting column 45 and prevent the component from moving excessively.

[0026] The method of using the aforementioned rapid mechanical breaking device for cast-in-place pile heads includes the following steps: s1. Positioning and centering steps: Using a lifting machine, the breaking device is moved above the pile to be broken, and the pile breaking machine is lowered and inserted into the pile until the top plate 1 contacts the top of the pile to achieve initial positioning; the motor 71 in the positioning mechanism 7 is started, driving the drive gear 72 to rotate, which drives multiple sliding columns 74 to slide in the arc groove 75, so that the sliding rod 76 pulls the clamping block 77 to move, and the column is clamped by multiple clamping blocks 77 to complete the automatic centering of the device and the column. s2. Radius adjustment steps: When it is necessary to break the pile heads of grouting piles with different radii, pull the control handle 47 to make the connecting column 45 drive the sliding plate 44 to slide in the fixed box 43, so that the limiting column 49 slides out from the limiting groove 48. Adjust the position of the inner plate 41 inside the outer plate 42 to change the breaking radius. After the adjustment is completed, release the control handle 47, so that the spring 46 pushes the sliding plate 44 to slide in the opposite direction, so that the limiting column 49 slides back into the limiting groove 48, locking the relative position of the inner plate 41 and the outer plate 42. S3. Crushing Operation Steps: After the equipment is fixed, the hydraulic cylinder 5 is activated to drive the fiber rod 8 to impact the column. The clamp 9 moves with the fiber rod 8 to clamp and transport the crushed column. During the drilling process of the fiber rod 8, the clamp 9 pulls the sliding rod 671 to slide in the positioning block 672. The guide block 673 pushes the control block 65 to slide in the sliding groove 66. After the control block 65 is in place, the compressed spring 64 pushes the moving block 62 to make the impact column 63 impact the clamp 9, providing impact force to the fiber rod 8 to improve the crushing effect. After the crushing is completed, the hydraulic cylinder 5 drives the fiber rod 8 to return. The clamp 9 pushes the impact column 63 to make the moving block 62 slide in the fixed box 61. After the fiber rod 8 returns, the control block 65 slides down due to gravity and gets stuck in the fixed box 61, locking the moving block 62 to store energy and prepare for the next crushing impact.

[0027] Working Principle: When it is necessary to break the pile head of a cast-in-place pile, the lifting machinery controlled by the control console 11 uses a lifting device to slowly move the entire breaking device above the pile to be broken. Then, the pile breaker is slowly lowered and fitted into the pile until the top plate 1 contacts the top of the pile, which serves to position and stabilize it. At this time, the positioning mechanism 7 inside the top plate 1 is activated. By starting the motor 71, the motor 71 drives the drive gear 72 to rotate. The rotation of the drive gear 72 causes multiple sliding columns 74 to slide inside the arc-shaped groove 75, thereby causing the sliding rod 76 to pull the clamping block 77 to move. The multiple clamping blocks 77 clamp the column, thereby adjusting the position of the entire breaking device and achieving automatic centering of the column. This greatly reduces the reliance on operator experience and improves the safety and standardization of the operation. After the equipment is fixed, it can ensure that the distance between each spur rod 8 and the pile surface is completely consistent. When all spur rods 8 extend synchronously, the pressure will be applied evenly to the entire circumference of the pile. This will generate a very smooth and controllable circumferential stress, causing the pile to break cleanly and neatly at the specified elevation, achieving the most ideal fracture effect.

[0028] When it is necessary to crush pile heads of different radii, the operator can pull the control handle 47 to make the connecting column 45 pull the sliding plate 44 to slide inside the fixed box 43. At this time, the outer side of the inner plate 41 can be adjusted to slide inside the outer plate 42, so that the outer side of the limiting column 49 slides out from inside the limiting groove 48. By adjusting the position of the inner plate 41 inside the outer plate 42, the crushing radius of the entire crushing device can be changed to meet the crushing requirements of different columns. After adjusting the position of the inner plate 41, the pulling of the control handle 47 is released, so that the spring 46 automatically pushes the sliding plate 44 to slide in the opposite direction inside the fixed box 43, so that the outer side of the limiting column 49 slides back into the limiting groove 48, thereby locking the state between the inner plate 41 and the outer plate 42, achieving a rapid adjustment effect, meeting the needs of rapid adjustment in different scenarios, and improving the crushing efficiency of the device.

[0029] When the crushing device is in normal use, the hydraulic cylinder 5 drives the derrick 8 to impact the column. The clamp 9 moves synchronously with the derrick 8 to clamp and transport the crushed column. When the derrick 8 is drilling in, the clamp 9 pulls the sliding rod 671 to slide inside the positioning block 672. As the sliding guide block 673 of the sliding rod 671 slides, it gradually pushes the control block 65 to slide inside the sliding groove 66. When the control block 65 slides to the designated position, the compressed spring 64 automatically pushes the moving block 62 to slide quickly out of the fixed box 61 until the outside of the impact column 63 collides with the outside of the clamp 9. The impact causes the entire fiber rod 8 to be subjected to shock. The huge impact force generates micro-cracks inside the concrete and causes them to expand rapidly, improving the crushing effect. After crushing, when the hydraulic cylinder 5 drives the fiber rod 8 to return, the clamp 9 will continue to push the impact column 63, causing the moving block 62 to slide inside the fixed box 61. When the fiber rod 8 returns, the control block 65 will automatically slide down due to gravity and get stuck inside the fixed box 61, locking the state of the moving block 62 and achieving the effect of energy storage, preparing for the next crushing impact. Through the effects of automatic energy storage and impact-assisted crushing, the crushing efficiency of the device is improved.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid mechanical breaking device for the pile head of a cast-in-place pile, comprising a top plate (1) and a hydraulic cylinder (5), characterized in that, The bottom end of the top plate (1) is fixedly connected to a plurality of steel wire ropes (2), and the bottom ends of two steel wire ropes (2) are fixedly connected to a fixing plate (3). An adjustment mechanism (4) is provided on the adjacent side of the two fixing plates (3). An impact mechanism (6) is provided at the top of the hydraulic cylinder (5). A positioning mechanism (7) is provided inside the top plate (1). The hydraulic cylinder (5) is connected to a control console (11) through a delivery pipe. The impact mechanism (6) includes a fixed box two (61), the bottom end of which is fixedly connected to the top end of the hydraulic cylinder (5). A moving block (62) is slidably connected inside the fixed box two (61). A spring two (64) is fixedly connected inside the fixed box two (61). An impact column (63) is fixedly connected to the end of the moving block (62) away from the spring two (64). A control block (65) is slidably connected inside the fixed box two (61). A scissor rod (8) is fixedly connected to the drive end of the hydraulic cylinder (5). A clamp (9) is fixedly connected to the outside of the scissor rod (8). A drive assembly (67) is provided on the outside of the clamp (9).

2. The rapid mechanical breaking device for the pile head of a cast-in-place pile according to claim 1, characterized in that, The end of the second spring (64) away from the inner wall of the second fixed box (61) is fixedly connected to the inside of the moving block (62), the outside of the impact column (63) is in contact with the outside of the clamp (9), and the bottom end of the hydraulic cylinder (5) is fixedly connected to the top of the fixed plate (3).

3. The rapid mechanical breaking device for the pile head of a cast-in-place pile according to claim 1, characterized in that, The moving block (62) has a sliding groove (66) inside, and the control block (65) is slidably connected to the inside of the sliding groove (66).

4. The rapid mechanical breaking device for the pile head of a cast-in-place pile according to claim 1, characterized in that, The drive assembly (67) includes a sliding rod (671), which is fixedly connected to the outside of the clamp (9). A positioning block (672) is fixedly connected to the outside of the fixing box (61), and a guide block (673) is fixedly connected to the top of the sliding rod (671).

5. The rapid mechanical breaking device for the pile head of a cast-in-place pile according to claim 4, characterized in that, The outer side of the sliding rod (671) is slidably connected to the inside of the positioning block (672), and the outer side of the guide block (673) is in contact with the outer side of the control block (65).

6. The rapid mechanical breaking device for the pile head of a cast-in-place pile according to claim 1, characterized in that, The positioning mechanism (7) includes a motor (71), the drive end of the motor (71) is fixedly connected to a drive gear (72), the top plate (1) is rotatably connected to a driven gear (73), the driven gear (73) and the drive gear (72) are meshed, the driven gear (73) is slidably connected to a plurality of sliding columns (74), the top end of the sliding column (74) is rotatably connected to a second sliding rod (76), and the bottom end of the second sliding rod (76) is fixedly connected to a clamping block (77).

7. The rapid mechanical breaking device for the pile head of a cast-in-place pile according to claim 6, characterized in that, The driven gear (73) has multiple arc-shaped grooves (75) inside, and the sliding rod (76) is externally slidably connected to the inside of the top plate (1).

8. The rapid mechanical breaking device for the pile head of a cast-in-place pile according to claim 1, characterized in that, The adjustment mechanism (4) includes an inner plate (41) and an outer plate (42). The outer side of the inner plate (41) is rotatably connected to the outside of one of the fixed plates (3), and the outer side of the outer plate (42) is rotatably connected to the outside of the other fixed plate (3). A fixed box (43) is fixedly connected to the top of the outer plate (42). A sliding plate (44) is slidably connected inside the fixed box (43). A connecting post (45) is fixedly connected to the top of the sliding plate (44). A spring (46) is sleeved on the outside of the connecting post (45). A control handle (47) is fixedly connected to the top of the connecting post (45). A limiting post (49) is fixedly connected to the bottom of the sliding plate (44).

9. A rapid mechanical breaking device for the pile head of a cast-in-place pile according to claim 8, characterized in that, The inner plate (41) has multiple limiting grooves (48) inside. The limiting post (49) is slidably connected to the inside of the limiting groove (48). The top end of the spring (46) is fixedly connected to the inside of the fixing box (43). The bottom end of the spring (46) is fixedly connected to the top end of the sliding plate (44). The connecting post (45) is slidably connected to the inside of the fixing box (43). A baffle (10) is fixedly connected to the outside of the fixing box (43).

10. The method of using the rapid mechanical breaking device for cast-in-place pile heads according to any one of claims 1-9, characterized in that, Includes the following steps: s1. Positioning and centering steps: Using a lifting machine, the breaking device is moved to the top of the pile to be broken, and the pile breaking machine is lowered and inserted into the pile until the top plate (1) contacts the top of the pile to achieve initial positioning; the motor (71) in the positioning mechanism (7) is started, driving the active gear (72) to rotate, which drives multiple sliding columns (74) to slide in the arc groove (75), so that the sliding rod two (76) pulls the clamping block (77) to move, and the column is clamped by multiple clamping blocks (77) to complete the automatic centering of the device and the column. s2. Radius adjustment steps: When it is necessary to break the pile head of the grouting pile with different radii, pull the control handle (47) to make the connecting column (45) drive the sliding plate (44) to slide in the fixed box (43), so that the limiting column (49) slides out from the limiting groove (48), adjust the position of the inner plate (41) inside the outer plate (42) to change the breaking radius, and after the adjustment is completed, release the control handle (47) so that the spring (46) pushes the sliding plate (44) to slide in the opposite direction, so that the limiting column (49) slides back into the limiting groove (48) and locks the relative position of the inner plate (41) and the outer plate (42). s3. Crushing operation steps: After the equipment is fixed, start the hydraulic cylinder (5) to drive the derrick (8) to impact the column. The clamp (9) moves with the derrick (8) to clamp and transport the crushed column. During the drilling process of the derrick (8), the clamp (9) pulls the sliding rod one (671) to slide in the positioning block (672). The guide block (673) pushes the control block (65) to slide in the sliding groove (66). After the control block (65) is in place, the compressed spring two (64) pushes the movement. Block (62) causes the impact column (63) to impact the clamp (9), providing impact force to the fiber rod (8) to improve the crushing effect. After crushing, the hydraulic cylinder (5) drives the fiber rod (8) to return. The clamp (9) pushes the impact column (63) to make the moving block (62) slide in the fixed box two (61). After the fiber rod (8) returns, the control block (65) slides down due to gravity and gets stuck in the fixed box two (61), locking the moving block (62) to achieve energy storage and prepare for the next crushing impact.

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