Concrete pile head crushing method and device

Abstract

The invention provides a concrete pile head crushing method and device.The concrete pile head crushing device comprises a main body power module, an advancing module, a lifting module, a telescopic module, a crushing module and a cutting module.The main body power module comprises a frame and a hydraulic workstation and provides support and power for stable operation of all mechanisms, and the advancing module advances in a crawler-type mode; the high trafficability of a complex terrain is guaranteed, the lifting module is lifted through a chain, it is guaranteed that steel bar crushing and steel bar cutting work is completed at a preset height, the telescopic module adopts a ball screw, the moving problem between a pile head and a vehicle body is flexibly solved, and the crushing module and the cutting module use crushing steel drill bits and rotary cutting blades; and pile head crushing and steel bar cutting work can be completed. According to the device provided by the invention, the crawler-type crushing and cutting integrated robot is used, and crushing of pile heads with different diameters and cutting of reinforcing steel bars can be completed in a site where large machinery is not suitable for passing.

Description

Technical Field

[0001] The invention belongs to the field of engineering machinery and equipment, and in particular relates to the use of pile head crushing and steel bar cutting in areas with complex terrain and inconvenient use of large-scale machinery and equipment. Background Art

[0002] As the amount of engineering construction increases, the complexity of various projects is also gradually increasing. It is easy to encounter problems such as complex terrain at construction sites in remote areas and difficulty for large machinery and equipment to pass through urban roads. At the same time, due to considerations of construction efficiency and safety, traditional manual steel bar cutting and large chain crushers are gradually facing elimination.

[0003] To this end, the present invention proposes a method and device for crushing concrete pile heads. A crawler-type forward device is used to ensure high passability in complex terrains. The crushing steel chisel is driven by a hydraulic cylinder to crush. At the same time, a connecting pin design is adopted, so pile heads with different diameters can be crushed stably. A detachable cutting device matching different pile head diameters is adopted. After the crushing work, the preset steel bar length is cut through the lifting device. The pile head crushing and steel bar cutting work can be stably performed on pile heads with different diameters in construction sites with complex terrains and places where large equipment is difficult to enter and install. The patent of this invention has important application significance and investment value in the current field of engineering machinery and equipment.

[0004] Therefore, due to the above technical defects in the prior art, it is a technical problem that needs to be solved urgently by technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a method and device for crushing concrete pile heads, aiming to solve the problems that existing large-scale crushing devices are difficult to enter complex construction sites, manual cutting of steel bars and crushing of pile heads are unsafe and inefficient, and crushing and cutting devices are difficult to adapt to pile heads of different diameters in complex projects.

[0006] The present invention is achieved in this way.

[0007] A concrete pile head crushing method and device, including a main power module, a travel module, a lifting module, a telescopic module, a crushing module and a cutting module, wherein the main power module includes a frame and a hydraulic workstation composed of a hydraulic pressure storage tube, a hydraulic pump, a motor, a pipeline, an electric control box, an oil filter, a pressure gauge and an operation warning light, the travel module includes a hydraulic travel motor, a driving wheel, a guide wheel, a supporting wheel and a crawler, the lifting module includes a lifting device composed of a chain base, a hydraulic rod, a door frame, a sprocket and a chain, the telescopic module includes an extension arm, a front support seat, a guide rail, a slider, a slide seat, a ball nut, a screw rod, a motor seat, a coupling, a driving motor and a base to form a ball screw device, the crushing module includes a hydraulic cylinder connecting seat, a crushing drive hydraulic cylinder, a connecting pin and a crushing steel drill head, and the cutting module includes a bearing plate, a rotating shaft, a cutting blade, a blade cover, a fixed plate and a cutting motor. The hydraulic workstation is fixed to the frame as a stable power source for the travel module. The two ends of the hydraulic travel motor are connected to the pipeline and the driving wheel respectively to drive the crawler forward. The guide wheel and the supporting wheel are located on the inner side of the crawler. The guide wheel clamps the crawler to prevent deviation and control the direction of travel. The supporting wheel transfers the weight of the vehicle body to the ground and prevents derailment, which solves the problem of easy damage to the wheeled tire and low passability. It can work in complex construction sites where large crushing devices are difficult to enter. The lifting device drives the crushing module and the cutting module to lift and lower to complete the crushing and cutting work at the preset position. The ball screw device drives the crushing module and the cutting module to move forward and backward, and flexibly handles the movement problem between the pile head and the vehicle body. The hydraulic cylinder connecting seat is connected to the extension arm, and the hydraulic cylinder is fixed on the hydraulic cylinder connecting seat to provide power for the crushing of the crushing steel drill bit. The crushing steel drill bit is threadedly connected to the hydraulic cylinder for easy replacement when worn. The two hydraulic cylinder connecting seats are connected by a connecting pin, and the connecting pin can be added or subtracted according to the diameter of the pile head to adapt to the crushing of pile heads with various diameters. The bearing plate is fixed to the upper part of the extension arm to stabilize the broken stones and piles produced by crushing and cutting. The rotating shaft is located at the center of the cutting blade, the blade cover is located outside the cutting blade, and the fixed plate connects the rotating shaft and the cutting motor. Automated crushing and cutting avoids safety accidents caused by manual cutting, and the work is efficient. The detachable cutting blade and the connecting pin-type crushing steel drill bit can be adapted to pile heads of different diameters in complex projects, realizing multiple uses of one machine, accelerating and shortening the project time and reducing costs.

[0008] Preferably, the frame is made of a material with high anti-bumping strength, which can adapt to the road conditions of complex construction sites and ensure the overall strength requirements of small and medium-sized frames and work.

[0009] Preferably, the hydraulic pressure storage pipe is fixed on the vehicle frame to absorb excess energy of the hydraulic workstation to ensure normal pressure of the entire system and to supply oil to the hydraulic system for a short period of time when needed.

[0010] Preferably, the motor is fixed on the frame to output mechanical energy to the hydraulic working system to ensure the stable operation of the hydraulic workstation.

[0011] Preferably, the hydraulic pump is connected to an electric motor to convert the mechanical energy of the electric motor into pressure energy of the liquid, thereby providing the required pressure and flow for the hydraulic workstation.

[0012] Preferably, the two ends of the pipeline are connected to a hydraulic pump and a pressure gauge to connect various hydraulic components in the hydraulic workstation to ensure the circulation of the hydraulic system and the transmission of energy.

[0013] Preferably, the electric control box is fixed next to the motor and can adjust the oil circuit pressure according to the flow in the pipeline to avoid excessive or insufficient pressure caused by excessive flow rate and flow, so as to ensure stable operation of the system.

[0014] Preferably, the oil filter is connected to the middle of the pipeline, and uses the filter medium to absorb and intercept impurities, purify the oil, and increase the service life of the equipment.

[0015] Preferably, the operation warning light is fixed on one side of the pressure gauge, which serves as a pressure display and alarm when there is a problem with the system working pressure, effectively ensuring the safety of people around the machine.

[0016] Preferably, both ends of the hydraulic travel motor are connected to the pipeline and the drive wheel respectively, so as to convert the hydraulic energy transmitted from the hydraulic pump into rotational mechanical energy, thereby causing the drive wheel to rotate.

[0017] Preferably, the driving wheel is responsible for utilizing the mechanical energy transmitted by the hydraulic travel motor to drive the crawler track to move forward stably.

[0018] Preferably, the guide wheel controls the direction of travel by controlling the steering of the track and at the same time clamps the track to prevent it from deviating, thereby playing a role in adjusting the direction of travel and ensuring travel safety.

[0019] Preferably, the supporting wheels roll on the crawler tracks and transfer weight to the ground, which can prevent the crawler tracks from making lateral relative movement to the supporting wheels, thereby effectively preventing derailment.

[0020] Preferably, the crawler track is made of high-strength wear-resistant material to adapt to traveling on a variety of road surfaces.

[0021] Preferably, the lifting device is fixed to the front part of the frame, and drives the crushing device and the cutting device to lift and lower, thereby completing the crushing of steel bars and cutting of steel bars of required length at a preset height.

[0022] Preferably, the ball screw device is fixed on the door frame, and the crushing device and the cutting device are moved forward and backward by driving the extension arm to move forward and backward, so that the pile head crushing and steel bar cutting work can be carried out flexibly.

[0023] Preferably, the hydraulic cylinder connecting seat is connected to the extension arm, and as a basic unit equipped with a crushing steel drill bit, it can be installed or removed according to the diameter of the pile head, so as to adapt to pile heads of different diameters in complex projects.

[0024] Preferably, the crushing drive hydraulic cylinder is fixed on the hydraulic cylinder connecting seat to provide power for the crushing steel drill bit.

[0025] Preferably, the connecting pin is located between the two hydraulic cylinder connecting seats, and plays the role of fixing the hydraulic cylinder connecting seats, making it convenient to add or subtract the hydraulic cylinder connecting seats according to the pile head diameter.

[0026] Preferably, the crushing steel drill bit is threadedly connected to the hydraulic cylinder and uses high-strength wear-resistant material, which can adapt to high-intensity crushing work. At the same time, the threaded connection facilitates the replacement of the damaged steel drill bit and improves work efficiency.

[0027] Preferably, the bearing plate is fixed to the upper part of the extending arm by bolts, so as to collect the gravel produced by crushing and cutting and prevent the broken pile head from tipping over to the left or right.

[0028] Preferably, the rotating shaft is located at the center of the cutting blade, providing a rotating center for the rotating cutting of the blade to better complete the steel bar cutting work.

[0029] Preferably, the cutting blade is made of high-strength anti-bending material, and the detachable design can meet the cutting requirements of different diameters.

[0030] Preferably, the blade cover is installed on the outside of the cutting blade to prevent the blade from accidentally breaking and causing harm to surrounding personnel.

[0031] Preferably, the fixed disk is connected to the rotating shaft and the cutting motor, which plays a role in stabilizing the rotary cutting and provides a guarantee for the stable operation of the cutting equipment.

[0032] Preferably, the cutting motor is fixed to the carrier plate to provide stable power for the rotary cutting of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is the general assembly drawing of the present invention;

[0034] Figure 2 It is the main power module diagram of the present invention;

[0035] Figure 3 It is a moving module diagram in the present invention;

[0036] Figure 4 It is a diagram of a lifting module in the present invention;

[0037] Figure 5 It is a telescopic module diagram in the present invention;

[0038] Figure 6 It is a diagram of a crushing module in the present invention;

[0039] Figure 7 It is a cutting module diagram in the present invention;

[0040] 1. Main power module 2. Travel module 3. Lifting module 4. Telescopic module 5. Crushing module 6. Cutting module 7. Frame 8. Hydraulic pressure storage pipe 9. Hydraulic pump 10. Motor 11. Pipeline 12. Electric control box 13. Oil filter 14. Pressure gauge 15. Operation warning light 16. Hydraulic travel motor 17. Drive wheel 18. Guide wheel 19. Support roller 20. Track 21. Chain base 22. Hydraulic rod 23. Mast 2 4. Sprocket 25. Chain 26. Extending arm 27. Front support seat 28. Guide rail 29. Slider 30. Sliding seat 31. Ball nut 32. Screw rod 33. Motor seat 34. Coupling 35. Drive motor 36. Base 37. Hydraulic cylinder connecting seat 38. Crushing drive hydraulic cylinder 39. Connecting pin 40. Crushing steel drill bit 41. Carrying plate 42. Rotating shaft 43. Cutting blade 44. Blade cover 45. Fixed plate 46. Cutting motor DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0042] like Figure 1The present invention shown is implemented as follows: a concrete pile head crushing method and device, including a main power module 1, a traveling module 2, a lifting module 3, a telescopic module 4, a crushing module 5, and a cutting module 6. The main power module 1 is the overall frame of the equipment, providing support for the mounting of other modules, and can also provide power support for the traveling module. Its hydraulic workstation is provided with an electric control box 13, a pressure gauge 14, and an operation warning light 15, which can play a role in regulating pressure and warning, and ensure the safety and efficiency of operation. The traveling module 2 adopts a crawler 20 to advance, which solves the actual situation that the wheel tire is easily damaged and has low passability. It can crush the pile head and cut the steel bar through steep slopes and pits, and in a construction environment where large machinery is difficult to enter. The lifting module 3 adopts a sprocket 24 to wind the chain 25, and performs lifting work under the drive of the hydraulic rod 22, which can drive the crushing module 5 and the cutting module 6 to complete the crushing and cutting work at a set height. The telescopic module 4 uses a ball screw device, and the driving motor 35 provides power, and the extended arm 26 performs telescopic work, helping the crushing module 5 and the cutting module 6 to perform crushing and cutting work at the required position. The crushing module 5 uses a crushing drive hydraulic cylinder 38 to provide power for the crushing work of the crushing steel drill bit 40. The hydraulic cylinder connecting seats 37 are connected by connecting pins 39, which realizes the addition and subtraction of the hydraulic cylinder connecting seats 37 for pile heads of different diameters, overcoming the difficulty of one machine being difficult to use for multiple purposes. The cutting module 6 uses a cutting motor 46 as the power source of the cutting blade 43, adopts a detachable cutting blade 43 and a blade cover 44, and can adjust the steel bars inside the pile heads of different diameters together with the hydraulic cylinder connecting seat 37 to ensure efficient crushing and cutting work.

[0043] Specifically, Figure 2 As shown, the motor 10 is fixed on the frame 7 to output mechanical energy for the hydraulic working system. The hydraulic pump 9 is connected to the motor 10 to convert the mechanical energy of the motor 10 into the pressure energy of the liquid. The two ends of the pipeline 11 are connected to the hydraulic pump 9 and the pressure gauge 14. Oil passes through the inside of the pipeline 11. The oil filter 13 installed in the middle of the pipeline 11 can use the filter medium to absorb and intercept impurities to purify the oil. The electric control box 12 fixed next to the motor 10 adjusts the oil flow and flow rate according to the pressure in the pipeline 11 to ensure stable operation of the system. The operation warning light 15 is fixed on one side of the pressure gauge 14. When an emergency occurs in the system, it can provide timely warning to ensure the safety of the staff.

[0044] Specifically, Figure 3As shown, both ends of the hydraulic travel motor 16 are connected to the pipeline 11 and the driving wheel 17. The hydraulic travel motor 16 converts the hydraulic energy transmitted by the hydraulic pump 9 into rotational mechanical energy, so that the driving wheel 17 rotates, and the driving wheel 17 drives the crawler 20 forward. The guide wheel 18 is installed at the front of the crawler 20, and controls the travel direction by controlling the steering of the crawler 20, and at the same time, the crawler 20 is blocked to prevent the crawler 20 from running off. The supporting roller 19 is installed in the middle of the crawler 20, rolling on the crawler 20, transferring the weight to the ground, and can prevent the crawler 20 from producing lateral relative movement to the supporting roller 19, effectively preventing derailment. The crawler 20 travel mechanism solves the actual situation that the wheeled tire is easily damaged and has low passability. It can crush pile heads and cut steel bars through steep slopes and pits, and can work in complex construction sites where large crushing devices are difficult to enter.

[0045] Specifically, Figure 4 As shown, the hydraulic rod 22 and the gantry 23 are fixed on the vehicle frame 7, the chain base 21 is respectively fixed on the gantry 23 and the vehicle frame 7, the two ends of the chain 25 are connected to the chain base 21, and the sprocket 24 is fixed on the hydraulic rod 22 and wound around the chain 25. When lifting work is required, the hydraulic rod 22 provides power to drive the sprocket 24 fixed on the hydraulic rod 22 to move up and down, the sprocket 24 drives the chain 25 wound on the top, and the chain 25 pulls the gantry 23 fixed on the chain base 21, so as to perform lifting work. The lifting equipment can drive the crushing module 5 and the cutting module 6 to lift and lower, complete the crushing and cutting work of the set height, make the operation more flexible, and meet the working requirements of the pile head crushing and steel bar cutting of a specific length.

[0046] Specifically, Figure 5 As shown, the base 36 is fixed on the gantry 23, the front support seat 27 is fixed on the front end of the base 36, and the crushing module 5 and the cutting module 6 are supported. The guide rail 28 is fixed on the base 36, the slide 30 is connected to the guide rail 28, the ball nut 31 is located inside the slide 30, the extension arm 26 is connected to the slide 30, the lead screw 32 is connected to the front support seat 27 and passes through the ball nut 31 and the center of the coupling 34, and the drive motor 35 is connected to the motor seat 33 and the coupling 34. The lead screw telescopic device is driven by the drive motor 35, which can transmit a large load and has the characteristics of high efficiency. The crushing module 5 and the cutting module 6 can be driven to complete the distance selection by the front and rear extension of the extension arm 26, and the crushing and cutting work can be completed more flexibly.

[0047] Specifically, Figure 6As shown, the hydraulic cylinder connecting seat 37 is connected to the extension arm 26, and the crushing drive hydraulic cylinder 38 is fixed on the hydraulic cylinder connecting seat 37 to provide power for the crushing steel drill bit 40 to crush. The crushing steel drill bit is threadedly connected to the crushing drive hydraulic cylinder 38 40, and can be replaced in time when worn. The two hydraulic cylinder connecting seats 37 are connected by a connecting pin 39, and the connecting pin 39 can be added or subtracted according to the diameter of the pile head to adapt to the crushing work of pile heads with various diameters.

[0048] Specifically, Figure 7 As shown, the supporting plate 41 is fixed to the upper part of the extending arm 26 by bolts, and can collect the gravel produced by crushing and cutting, and prevent the broken pile head from tipping left and right and affecting the movement. The rotating shaft 42 is located at the center of the cutting blade 43, and the fixed plate 45 connects the rotating shaft 42 and the cutting motor 46. The cutting motor 46 provides power for the cutting blade 43 to rotate and cut. The blade cover 44 is located on the outside of the cutting blade 43. The detachable cutting blade 43 and the blade cover 44 can adapt to the internal steel bars of the pile head of different diameters, and avoid safety accidents caused by manual cutting.

[0049] It should be noted that the device provided by this patent can meet other engineering work requirements with slight modifications, but they all fall within the scope of protection of this patent.

[0050] The working principle and process of this embodiment are as follows:

[0051] The hydraulic workstation is fixed to the vehicle frame 7, serving as a stable power source for the traveling module 2. The two ends of the hydraulic traveling motor 16 are respectively connected to the pipeline 11 and the driving wheel 17, converting the hydraulic energy transmitted by the hydraulic pump 9 into the rotational mechanical energy of the driving wheel 17, driving the crawler 20 forward, the guide wheel 18 and the supporting roller 19 are located on the inner side of the crawler 20, the supporting roller 19 transmits the weight of the vehicle body to the ground and prevents derailment, and the guide wheel 18 clamps the crawler 20 to prevent deviation and control the traveling direction, solving the problem of easy damage and low passability of wheeled tires, and can work in construction sites that traditional large crushing and cutting devices can enter. The lifting device pushes the sprocket 24 up and down through the hydraulic rod 22, and the chain 25 wound on the sprocket 24 pulls the gantry 23 to lift and lower, thereby driving the crushing module 5 and the cutting module 6 to lift and lower, completing the crushing and cutting work at the preset position. The ball screw device is driven by the driving motor 35, driving the extension arm 26 to extend and retract, realizing the front and rear movement of the crushing module 5 and the cutting module 6, and flexibly handling the movement problem between the pile head and the vehicle body. The hydraulic cylinder connection seat 37 in the crushing module 5 is connected to the extension arm 26, and the crushing drive hydraulic cylinder 38 is fixed on the hydraulic cylinder connection seat 37 to provide power for the crushing steel drill bit 40 to crush. The crushing steel drill bit 40 is threadedly connected to the crushing drive hydraulic cylinder 38, which is convenient for replacement when worn, thereby improving the crushing efficiency. The bearing plate 41 in the cutting module 6 is fixed to the upper part of the extension arm 26 to stabilize the broken stone piles produced by crushing and cutting. The rotating shaft 42 is located at the center of the cutting blade 43. The fixed plate 45 connects the rotating shaft 42 and the cutting motor 46. The cutting motor 46 provides power for the cutting blade 43 to rotate and cut. A blade cover 44 is installed on the outside of the cutting blade 43 to prevent the cutting blade 43 from breaking and causing safety accidents. The use of a detachable cutting blade 43 and a blade cover 44 can adapt to the internal steel bars of pile heads of different diameters. The two hydraulic cylinder connection seats 37 are connected by a connecting pin 39, and the connecting pin 39 can be added or subtracted according to the diameter of the pile head to adapt to the crushing work of pile heads of various diameters. It has achieved the crushing of pile heads of different diameters and cutting of steel bars in complex construction sites where large machinery cannot pass through, solving the problems of low efficiency of manual crushing and cutting, great safety hazards and difficulty in transporting large crushing and cutting equipment, and solving the problem of needing to spend a long time to replace equipment when facing pile heads of different diameters and internal steel bars in complex construction sites.

Claims

1. A concrete pile head crushing method and device, characterized in that: It includes a main power module, a travel module, a lifting module, a telescopic module, a crushing module and a cutting module, wherein the main power module includes a frame, a hydraulic pressure storage tube, a hydraulic pump, an electric motor, a pipeline, an electric control box, an oil filter, a pressure gauge and an operation warning light; the travel module includes a hydraulic travel motor, a driving wheel, a guide wheel, a supporting wheel and a crawler track; the lifting module includes a chain base, a hydraulic rod, a gantry, a sprocket and a chain; the telescopic module includes an extension arm, a front support seat, a guide rail, a slider, a slide seat, a ball nut, a screw rod, a motor seat, a coupling, a driving motor and a base; the crushing module includes a hydraulic cylinder connecting seat, a crushing drive hydraulic cylinder, a connecting pin and a crushing steel chisel bit; the cutting module includes a bearing plate, a rotating shaft, a cutting blade, a blade cover, a fixed plate and a cutting motor.

2. A concrete pile head crushing method and device as claimed in claim 1, characterized in that: The motor and the hydraulic pressure storage tube are fixed on the frame, the electric control box is fixed beside the motor, the hydraulic pump is connected to the motor, the two ends of the pipeline are connected to the hydraulic pump and the pressure gauge, the oil filter is connected to the middle of the pipeline, the operation warning light is fixed to one side of the pressure gauge, the two ends of the hydraulic travel motor are respectively connected to the pipeline and the driving wheel, the driving wheel, the guide wheel and the supporting wheel are located on the inner side of the crawler track, the hydraulic rod and the door frame are fixed on the frame, the chain base is respectively fixed on the door frame and the frame, the two ends of the chain are connected to the base, the sprocket is fixed on the hydraulic rod and the chain is wound, the base is fixed on the door frame, and the front support seat is fixed on the front end of the base. The guide rail is fixed on the base, the slide is connected to the guide rail, the ball nut is located inside the slide, the extension arm is connected to the slide, the lead screw is connected to the front support seat and through the ball nut and the coupling center, the drive motor is connected to the motor seat and the coupling, the hydraulic cylinder connecting seat is connected to the extension arm, the crushing drive hydraulic cylinder is fixed on the hydraulic cylinder connecting seat, the crushing steel drill bit is threadedly connected to the hydraulic cylinder, the two hydraulic cylinder connecting seats are connected by a connecting pin, the supporting plate is fixed to the upper part of the extension arm, the rotating shaft is located at the center of the cutting blade, the blade cover is located outside the cutting blade, and the fixed plate is connected to the rotating shaft and the cutting motor.

3. A concrete pile head crushing method and device as claimed in claim 2, characterized in that: One end of the hydraulic travel motor is connected to the driving wheel, and the driving wheel, guide wheel and supporting wheel are located on the inner side of the crawler track. The driving wheel converts the hydraulic energy transmitted from the hydraulic pump into rotational mechanical energy through the hydraulic travel motor to drive the crawler track forward. The guide wheel controls the travel direction by controlling the steering of the crawler track and at the same time jams the crawler track to prevent the crawler track from running off the track. The supporting wheel rolls on the crawler track and transfers the weight to the ground, which can prevent the crawler track from moving laterally relative to it and effectively prevent derailment. The crawler track travel mechanism solves the actual situation that wheel tires are easily damaged and have low passability. It can crush pile heads and cut steel bars through steep slopes and pits, and adapt to more complex construction environments.

4. A method and device for crushing concrete pile heads as claimed in claim 2, characterized in that: The hydraulic cylinder connecting seat is connected to the extension arm, and the crushing drive hydraulic cylinder is fixed on the hydraulic cylinder connecting seat to provide power for the crushing steel drill bit. The crushing steel drill bit is threadedly connected to the hydraulic cylinder and can be replaced in time if it is worn. The two hydraulic cylinder connecting seats are connected by connecting pins, and connecting pins can be added or subtracted according to the diameter of the pile head to adapt to the crushing of pile heads with various diameters.

5. A method and device for crushing concrete pile heads as claimed in claim 2, characterized in that: The carrying plate is fixed to the upper part of the extending arm by bolts, and can collect the gravel produced by crushing and cutting, and prevent the broken pile head from tilting left and right and affecting the progress. The rotating shaft is located at the center of the cutting blade, and the fixed plate is connected to the rotating shaft and the cutting motor. The motor provides power for the blade to rotate and cut. The blade cover is located on the outside of the cutting blade. A detachable cutting blade and blade cover are used to avoid safety accidents caused by manual cutting, and can adapt to the internal steel bars of pile heads of different diameters.

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