A pile head cutting machine for CFG piles

Abstract

This application relates to a pile head cutting machine for CFG piles, belonging to the field of CFG pile head cutting technology. The pile head cutting machine for CFG piles includes a frame and a cutting mechanism. The cutting mechanism is used to cut CFG pile heads. A mounting plate is provided on the frame, and the cutting mechanism is mounted on the mounting plate. A connecting rod is provided on the top wall of the mounting plate, and the connecting rod is connected to the frame via a ball joint. The pile head cutting machine for CFG piles also includes an annular guide rail and a slider. The annular guide rail is movably fitted around the CFG pile head and is concentric with the CFG pile head. A fixing element is provided on the annular guide rail to fix it relative to the ground. The slider slides within the annular guide rail. A straight guide rail is connected to the annular guide rail, extending in a direction away from the CFG pile head. This application has a certain degree of effect in ensuring the flatness of the pile head cutting surface.

Description

Technical Field

[0001] This application relates to the field of CFG pile head cutting technology, and in particular to a pile head cutting machine for CFG piles. Background Technology

[0002] CFG piles typically refer to variable strength piles made from a mixture of crushed stone, stone chips, sand, fly ash, cement, and water, using various pile-forming machines. They are also known as cement-fly ash-crushed stone piles. After the CFG piles are poured and hardened, the pile heads need to be cut off using a cutting machine to achieve the specified elevation.

[0003] In related technologies, a pile head cutting machine for CFG piles includes a frame with multiple casters mounted on its bottom wall. The frame is equipped with a cutting mechanism for cutting the pile head. This mechanism includes a cutting blade wheel rotating on the frame and a motor housing mounted on the frame, which drives the cutting blade wheel to rotate. During operation, a line is marked on the pile body at the desired location with red paint. The frame is then moved to the pile head, aligning the cutting blade wheel with the mark. The motor housing is then activated to drive the cutting blade wheel to rotate and perform a circular cut on the pile head.

[0004] Regarding the aforementioned technologies, the area surrounding the CFG pile body is usually rock and soil with low flatness and density. When the vehicle frame moves on the rock and soil around the pile body to cut the pile head, it is easy to tilt and difficult to maintain balance. After cutting the pile, the flatness of the pile head cut surface is not good. Summary of the Invention

[0005] To help ensure the flatness of the cut surface of the pile head, this application provides a pile head cutting machine for CFG piles.

[0006] The pile head cutting machine for CFG piles provided in this application adopts the following technical solution:

[0007] A pile head cutting machine for CFG piles includes a frame and a cutting mechanism. The cutting mechanism is used to cut CFG pile heads. A mounting plate is provided on the frame, and the cutting mechanism is mounted on the mounting plate. A connecting rod is provided on the top wall of the mounting plate, and the connecting rod is connected to the frame via a ball joint. The pile head cutting machine for CFG piles also includes an annular guide rail and a slider. The annular guide rail is movably fitted around the CFG pile head and is concentric with the CFG pile head. A fixing element is provided on the annular guide rail to fix it relative to the ground. The slider slides inside the annular guide rail. A straight guide rail is connected to the annular guide rail and extends in a direction away from the CFG pile head. The straight guide rail is used to slide and engage with the slider. A locking mechanism is provided on the mounting plate to fix the mounting plate and the slider relative to each other.

[0008] By adopting the above technical solution, a ring guide rail is fitted onto the pile head of the CFG pile to be cut, making the ring guide rail and the pile head concentric. The ring guide rail is moved to the required height of the pile head, and the ring guide rail is fixed to the ground by a fixing component, thus achieving relative fixation between the ring guide rail and the pile head. Then, the slider is moved to the end of the straight guide rail away from the ring guide rail, and then the mounting plate on the frame is moved to the straight guide rail. The mounting plate and the slider are fixed to each other by a locking mechanism. Then, the frame is pushed so that the slider moves along the straight guide rail toward the direction closer to the ring guide rail. The pile head is cut by the cutting mechanism. When the slider moves into the ring guide rail, the frame is pushed so that the slider moves along the ring guide rail, so that the cutting mechanism performs a circumferential cut on the pile head. Since the frame and the mounting plate are connected by a ball joint, the frame and the mounting plate can move relative to each other. When the frame shakes or tilts during movement, it is not easy to affect the cutting device on the mounting plate, thus helping to ensure the flatness of the pile head cut surface.

[0009] Preferably, a sliding plate is slidably disposed on the frame, the sliding plate is located above the mounting plate, the sliding direction of the sliding plate is set in the vertical direction, the end of the connecting rod away from the mounting plate is connected to the sliding plate on the frame through a ball joint, the mounting plate is located above the slider, and the frame is provided with an adjustment component for adjusting the sliding plate to drive the mounting plate to slide in a direction closer to or away from the slider.

[0010] By adopting the above technical solution, the sliding plate and the mounting plate are driven to slide towards or away from the slider by adjusting the components, which facilitates the fixing and detachment of the mounting plate from the slider and helps the cutting mechanism to perform circumferential cutting on the pile head along the circular track. At the same time, the mounting plate can be fixed or detached from the slider by moving up and down, which can be applied to different heights of the circular guide rail and expand the scope of application.

[0011] Preferably, the adjustment assembly includes a pull rope disposed on the mounting plate, a transmission block slidably disposed within the frame, and a sliding member disposed on the frame. The end of the pull rope away from the mounting plate slides through the sliding plate and is connected to the transmission block on the frame. The sliding direction of the transmission block is perpendicular to the sliding direction of the sliding plate. The sliding member is used to drive the transmission block to slide towards or away from the sliding plate.

[0012] By adopting the above technical solution, the sliding component drives the transmission block to slide towards the sliding plate, reducing the tension of the pull rope on the mounting plate. At this time, under the gravity of the sliding plate, the mounting plate, and the cutting mechanism, the mounting plate slides towards the slider, which helps to fix the mounting plate and the slider relatively. The sliding component drives the transmission block to slide away from the sliding plate, causing the transmission block to pull the pull rope, which in turn pulls the mounting plate away from the slider, helping to separate the mounting plate from the slider.

[0013] Preferably, the sliding component includes a screw rotatably mounted on the frame, the axis of rotation of the screw being parallel to the sliding direction of the transmission block, and the transmission block being threadedly connected to the screw.

[0014] By adopting the above technical solution, rotating the screw causes the transmission block to slide towards or away from the sliding plate, which helps the transmission block to pull or release the rope, making it easier to slide the mounting plate up and down.

[0015] Preferably, the locking mechanism includes a locking block disposed on the mounting plate and a locking component disposed on the locking block. The locking block is located on the side of the cutting mechanism away from the pile head. The slider has a slot for engaging with the locking block. The locking component is used to fix or disengage the locking block from the slider.

[0016] By adopting the above technical solution, when the mounting plate slides towards the slider, the locking block engages with the slot. The locking component fixes the locking block and the slider relatively, so that when the frame is moved, the slider can drive the mounting plate to slide along the linear guide rail or the circular guide rail. Since the slider and the locking block are relatively fixed, the shaking and tilting of the frame during movement are less likely to affect the smooth sliding of the mounting plate, which helps to ensure the flatness of the pile head cutting surface.

[0017] Preferably, the locking assembly includes an insert block slidably passing through the locking block and a pusher member disposed on the locking block. The sliding direction of the insert block is perpendicular to the sliding direction of the sliding plate. A slot is provided on the inner wall of the slot for engaging with the insert block. The side of the insert block near the slider is an inclined surface, which slopes upward in a direction away from the locking block. The inclined surface is used to slide relative to the top wall of the slot. One end of the pull rope near the mounting plate slides through the mounting plate and the locking block and connects to the side of the insert block near the locking block. The pusher member is used to push the insert block to slide in a direction away from the locking block.

[0018] By adopting the above technical solution, when the pull rope is released, the sliding plate drives the mounting plate and locking block to slide towards the slider. At this time, the insert block will gradually move out of the locking block. When the locking block enters the slot, the inclined surface of the insert block will abut against the top wall of the slot and slide relative to each other, driving the insert block to slide towards the locking block until the locking block drives the insert block to move to align with the slot. At this time, the pusher pushes the insert block to slide away from the locking block, so that the insert block and the slot are engaged and matched, thereby achieving relative fixation of the locking block and the slider. This makes the mounting plate less susceptible to the influence of frame vibration or tilt during cutting, which helps to ensure the flatness of the pile head cutting surface.

[0019] Preferably, the pusher includes a push spring for pushing the insert block to slide away from the locking block, one end of the push spring being disposed on the locking block and the other end being disposed on the insert block.

[0020] By adopting the above technical solution, the push spring pushes the insert block to slide away from the locking block, which helps to connect the insert block with the slot and achieve relative fixation between the locking block and the slider. This makes the mounting plate less susceptible to frame vibration or tilting during cutting, and helps to ensure the flatness of the pile head cutting surface.

[0021] Preferably, an adjusting plate is slidably disposed on the mounting plate. The adjusting plate is located on the side of the locking block near the pile head. The sliding direction of the adjusting plate is set in the horizontal direction. The adjusting plate slides towards or away from the locking block. The cutting mechanism is disposed on the adjusting plate. The mounting plate is provided with a driving member for driving the adjusting plate to drive the cutting mechanism to slide towards or away from the locking block.

[0022] By adopting the above technical solution, the adjusting plate is driven by the driving component to slide towards or away from the locking block, which helps to cut pile heads of different diameters and further expands the scope of application.

[0023] Preferably, the driving component includes a lead screw rotatably mounted on the mounting plate, the axis of rotation of the lead screw being parallel to the sliding direction of the adjusting plate, and the adjusting plate being threadedly connected to the lead screw.

[0024] By adopting the above technical solution, rotating the lead screw drives the adjusting plate to slide the cutting mechanism toward or away from the pile head, which helps to cut pile heads of different diameters and further expands the scope of application.

[0025] Preferably, the fixing member includes a plurality of stakes disposed on an annular guide rail, the plurality of stakes being inserted into the ground.

[0026] By adopting the above technical solution, the piles are inserted below the ground, which can achieve relative fixation between the annular guide rail and the CFG pile. At the same time, inserting the piles to different depths can help to cut the pile heads to different heights as needed, thus expanding the scope of application to a certain extent.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] The annular guide rail is fitted onto the CFG pile head to be cut, ensuring that the annular guide rail and the pile head are concentric. The annular guide rail is moved to the desired height of the pile head and fixed to the ground using fasteners, thus achieving relative fixation between the annular guide rail and the pile head. Next, the slider is moved to the end of the straight guide rail away from the annular guide rail. Then, the mounting plate on the frame is moved to the straight guide rail, and the mounting plate and slider are fixed to each other using a locking mechanism. The frame is then pushed to move the slider along the straight guide rail towards the annular guide rail, allowing the cutting mechanism to cut the pile head. When the slider moves into the annular guide rail, the frame is pushed to move the slider along the annular guide rail, allowing the cutting mechanism to perform a circumferential cut on the pile head. Because the frame and mounting plate are connected by a ball joint, they can move relative to each other. When the frame shakes or tilts during movement, it is less likely to affect the cutting device on the mounting plate, thus helping to ensure the flatness of the pile head cut surface. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0030] Figure 2 This is a partial structural cross-sectional view of an embodiment of this application.

[0031] Figure 3 yes Figure 2 Enlarged view of section A.

[0032] Figure 4 yes Figure 2 Enlarged view of section B.

[0033] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Cutting mechanism; 201. Motor housing; 202. Cutting wheel; 3. Mounting plate; 4. Connecting rod; 5. Ball joint; 6. Circular guide rail; 7. Slider; 8. Linear guide rail; 9. Locking mechanism; 91. Locking block; 92. Locking assembly; 921. Insert block; 922. Pushing component; 9221. Push spring; 10. Sliding plate; 11. Pull rope; 12. Transmission block; 13. 14. Screw; 15. Slot; 16. Inclined surface; 17. Adjusting plate; 18. Lead screw; 19. Insert stake; 20. Bracket; 21. Crossbar; 22. Guide rod; 23. Guide wheel; 24. Guide groove; 25. Rolling wheel; 26. Sliding cavity; 27. Through hole; 28. First handle; 29. ​​Connecting groove; 30. Connecting rope; 31. Groove; 32. Protrusion; 33. Second handle; 34. Counterweight. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0035] This application discloses a pile head cutting machine for CFG piles. (Refer to...) Figure 1 , Figure 2 and Figure 3 The CFG pile head cutting machine includes a frame 1, a cutting mechanism 2, an annular guide rail 6, and a slider 7. The cutting mechanism 2 is used to cut CFG pile heads. A bracket 20 is fixed to the side of the frame 1 away from the handlebars. The bracket 20 is further fixed by diagonal braces. A crossbeam 21 is fixed to the top wall of the bracket 20. The crossbeam 21 is set horizontally and extends away from the handlebars. A counterweight 34 is fixed to the side of the frame 1 near the handlebars to maintain the balance of the frame 1. A sliding plate 10 is slidably set below the crossbeam 21. The sliding direction of the sliding plate 10 is set vertically. The sliding plate 10 is fixed with multiple guide rods 22 on the side near the cross frame 21. The length direction of the guide rods 22 is set in the vertical direction. The guide rods 22 slide through the cross frame 21. The mounting plate 3 is set below the sliding plate 10. The cutting mechanism 2 is set on the mounting plate 3. The side of the mounting plate 3 near the sliding plate 10 is fixed with a connecting rod 4. The connecting rod 4 is located in the middle of the mounting plate 3. The connecting rod 4 is connected to the side of the sliding plate 10 near the mounting plate 3 by a ball joint 5. The cross frame 21 is provided with an adjustment component for adjusting the sliding of the sliding plate 10 and the mounting plate 3.

[0036] Reference Figure 2 and Figure 3 An annular guide rail 6 is used to movably fit around the CFG pile head. The annular guide rail 6 is concentric with the CFG pile head. The annular guide rail 6 is equipped with a fixing component to fix it relative to the ground. A slider 7 slides inside the annular guide rail 6, located below the mounting plate 3. The slider 7 is an arc-shaped block, and its curvature matches that of the annular guide rail 6. Guide wheels 23 are installed on opposite sides of the slider 7. Guide grooves 24 are formed on the two opposite inner walls of the annular guide rail 6 to roll and engage with the guide wheels 23. A straight guide rail 8 is connected to the annular guide rail 6, extending away from the CFG pile head. The straight line of the straight guide rail 8 passes through the center of the annular guide rail 6. A rolling wheel 25 is installed on the bottom wall of the slider 7, and the straight guide rail 8 is used to slide and engage with the rolling wheel 25 of the slider 7. The mounting plate 3 is equipped with a locking mechanism 9 to fix the mounting plate 3 and the slider 7 relative to each other.

[0037] During operation, the annular guide rail 6 is fitted over the CFG pile head, ensuring concentricity between the annular guide rail 6 and the CFG pile head. The annular guide rail 6 is then moved to the desired height and fixed relative to the ground using fasteners, thus achieving relative fixation between the annular guide rail 6 and the pile head. Next, the slider 7 is moved to the side of the straight guide rail 8 away from the annular guide rail 6. The frame 1 is then pushed to the straight guide rail 8, aligning the mounting plate 3 with the slider 7. The adjusting assembly then adjusts the sliding plate 10, causing the mounting plate 3 and cutting mechanism 2 to move closer to the slider 7. The locking mechanism 9 secures the mounting plate 3 to the slider 7. Finally, the frame 1 is pushed... Slide towards the pile head. At this time, the slider 7 slides towards the pile head within the straight guide rail 8. The pile head is cut by the cutting mechanism 2. When the slider 7 moves into the annular guide rail 6, it pushes the frame 1, causing the mounting plate 3 to drive the slider 7 to slide along the annular guide rail 6. At this time, the cutting mechanism 2 performs a ring cut on the pile head. Since the slider 7 is relatively fixed to the mounting plate 3 and the annular guide rail 6 is relatively fixed to the pile head, the shaking and tilting caused by the unevenness of the rock and soil surface during the movement of the frame 1 will not affect the smooth sliding of the mounting plate 3 under the action of the ball joint 5, thus helping to ensure the flatness of the pile head cut surface.

[0038] Reference Figure 2 To facilitate the relative fixation between the annular guide rail 6 and the pile head, the fixing component includes multiple stakes 19 fixed to the bottom wall of the annular guide rail 6. The stakes 19 are spaced apart circumferentially along the annular guide rail 6, with their length direction vertical. These stakes 19 are inserted into the ground. By inserting the stakes 19 below the soil surface, the annular guide rail 6 can be fixed, facilitating its removal. Furthermore, inserting the stakes 19 to different depths allows for adjustment of the height of the annular guide rail 6 as needed, adapting to different cutting heights and expanding its applicability to some extent.

[0039] Reference Figure 2 and Figure 4 The adjustment assembly includes a pull rope 11, a transmission block 12, and a sliding member. The pull rope 11 is set on the top wall of the mounting plate 3, and two pull ropes 11 are symmetrically arranged along the connecting rod 4. The transmission block 12 corresponds to the pull rope 11 one by one. A sliding cavity 26 is opened in the cross frame 21, and the transmission block 12 is slidably set in the sliding cavity 26. The end of the pull rope 11 away from the mounting plate 3 slides through the sliding plate 10. The cross frame 21 is fixedly connected to the corresponding transmission block 12. The sliding direction of the transmission block 12 is perpendicular to the sliding direction of the sliding plate 10. When the mounting plate 3 and the slider 7 are relatively fixed, the sliding direction of the transmission block 12 is parallel to the length direction of the straight guide rail 8. The cross frame 21 is provided with through holes 27 for the pull rope 11 to slide through. The through holes 27 are connected to the sliding cavity 26. The sliding member is set on the cross frame 21 and is used to drive the transmission block 12 to slide towards or away from the corresponding through hole 27.

[0040] Reference Figure 2 and Figure 4 To facilitate the sliding of the transmission block 12, the sliding component includes a screw 13 rotatably disposed in the slide cavity 26. The rotation axis of the screw 13 is parallel to the sliding direction of the transmission block 12. The transmission blocks 12 in the slide cavity 26 are all threadedly connected to the screw 13. One end of the screw 13 is rotatably disposed on the cross frame 21. The end of the screw 13 located outside the cross frame 21 is fixed with a first handle 28. The first handle 28 is provided to facilitate the rotation of the screw 13.

[0041] When it is necessary to move the mounting plate 3 closer to the slider 7, the first handle 28 is turned. The first handle 28 drives the screw 13 to rotate, and the screw 13 drives the transmission block 12 to slide towards the corresponding through hole 27. At this time, the tension of the transmission block 12 on the pull rope 11 decreases. Under the gravity of the sliding plate 10, the mounting plate 3, and the cutting mechanism 2, the mounting plate 3 moves downward and gradually approaches the slider 7, facilitating the relative fixation between the mounting plate 3 and the slider 7. When it is necessary to move the mounting plate 3 away from the slider 7, the first handle 28 is turned in the opposite direction. The first handle 28 drives the screw 13 to rotate, and the screw 13 drives the transmission block 12 to slide away from the corresponding through hole 27. At this time, the transmission block 12 pulls the pull rope 11, and the pull rope 11 pulls the sliding plate 10, the mounting plate 3, and the cutting mechanism 2 upward, facilitating the separation of the mounting plate 3 from the slider 7.

[0042] Reference Figure 2 and Figure 3 To facilitate the relative fixation of the mounting plate 3 and the slider 7, the locking mechanism 9 includes a locking block 91 and a locking component 92. The locking block 91 is fixedly connected to the side of the mounting plate 3 near the slider 7. The locking block 91 is located on the side of the cutting mechanism 2 away from the pile head and on the side of the connecting rod 4 away from the pile head. The length direction of the locking block 91 is set vertically. A slot 14 is provided on the top wall of the slider 7 for engaging with the locking block 91. The cross-section of the slider 7 is adapted to the cross-section of the slot 14. The locking component 92 is provided on the locking block 91 and is used to fix or disengage the locking block 91 from the slider 7.

[0043] Reference Figure 2 and Figure 3To facilitate the relative fixing or disengagement of the locking block 91 and the slider 7, connecting grooves 29 are provided on opposite sides of the locking block 91 near the slider 7. The locking assembly 92 includes an insert 921 and a pusher 922. The insert 921 is slidably disposed in the connecting groove 29, and the sliding direction of the insert 921 is perpendicular to the sliding direction of the sliding plate 10. A slot 15 for inserting and engaging with the insert 921 is provided on the inner wall of the slot 14. The side of the insert 921 near the slider 7 is a slope 16, which slopes upward away from the locking block 91. The slope 16 is used to slide relative to the top wall of the slot 14. A connecting rope 30 is fixed to the side of the insert 921 near the connecting groove 29. The connecting rope 30 slides through the bottom wall of the connecting groove 29 and extends into the locking block 91. The end of the pull rope 11 near the locking block 91 away from the transmission block 12 slides through the... The mounting plate 3 and locking block 91 are connected to two connecting ropes 30. The pusher 922 is disposed in the connecting groove 29. The pusher 922 is used to push the insert 921 to slide away from the locking block 91. The pusher 922 includes a push spring 9221 for pushing the insert 921 to slide away from the locking block 91. The push spring 9221 is located in the connecting groove 29. The extension direction of the push spring 9221 is parallel to the sliding direction of the insert 921. One end of the push spring 9221 is fixedly connected to the bottom wall of the connecting groove 29, and the other end is fixedly connected to the inner wall of the insert 921 near the connecting groove 29. The pushing force of the push spring 9221 is less than the weight of the locking block 91. The distance from the bottom wall of the locking block 91 to the top wall of the insert 921 is equal to the distance from the bottom wall of the slot 14 to the top wall of the connecting groove 29, so that when the locking block 91 abuts against the bottom wall of the slot 14, the insert 921 is aligned with the slot 15.

[0044] When the locking block 91 slides towards the slider 7, the lower end of the locking block 91 gradually enters the slot 14. Then, the inclined surface 16 of the insert block 921 gradually abuts against the top wall of the slot 14 and slides relative to each other. At this time, the insert block 921 enters the connecting slot 29 towards the connecting slot 29, compressing the push spring 9221 until the insert block 921 moves to be aligned with the slot 15. At this time, the compressed push spring 9221 pushes the insert block 921 to slide away from the connecting slot 29, so that part of the insert block 921 is inserted and engaged with the corresponding slot 15, thereby achieving relative fixation between the locking block 91 and the slider 7. This helps to achieve smooth sliding of the mounting plate 3 and ensures the flatness of the pile head cutting surface.

[0045] When the pull rope 11 is pulled toward the direction of the crossbar 21, the pull rope 11 on the side of the locking block 91 pulls the connecting rope 30, causing the connecting rope 30 to pull the insert block 921 toward the direction of the connecting groove 29. The insert block 921 moves into the corresponding connecting groove 29. Then the pull rope 11 continues to be pulled, which can cause the mounting plate 3 to move the locking block 91 away from the slider 7, thereby disengaging the locking block 91 from the slider 7.

[0046] Reference Figure 2 and Figure 3 A groove 31 is provided on the side of the mounting plate 3 away from the sliding plate 10. The groove 31 is located on the side of the locking block 91 near the pile head. A protrusion 32 is slidably disposed in the groove 31. The sliding direction of the protrusion 32 is perpendicular to the sliding direction of the sliding plate 10 and parallel to the sliding direction of the transmission block 12. An adjusting plate 17 is fixedly connected to the bottom wall of the protrusion 32. The protrusion 32 drives the adjusting plate 17 to slide towards or away from the locking block 91. The cutting mechanism 2 is disposed on the adjusting plate 17. The cutting mechanism 2 includes a motor housing 201 fixedly mounted on the adjusting plate 17 and a cutting blade wheel 202 rotating on the adjusting plate 17. The motor housing 201 is used to drive the cutting blade wheel 202 to rotate. The cutting mechanism 2 is prior art and will not be described in detail here. The distance from the cutting blade wheel 202 to the bottom wall of the locking block 91 is equal to the thickness of the slider 7. The mounting plate 3 is provided with a driving component for driving the protrusion 32 to drive the adjusting plate 17 to slide. The mounting plate has equal weight on both sides symmetrically along the connecting rod 4, thus achieving a balanced state.

[0047] Reference Figure 2 To facilitate the sliding of the adjustment plate 17 driven by the protrusion 32, the driving component includes a lead screw 18 rotatably disposed in the groove 31. The rotation axis of the lead screw 18 is parallel to the sliding direction of the protrusion 32. The protrusion 32 is threadedly connected to the lead screw 18. One end of the lead screw 18 near the locking block 91 rotates out of the mounting plate 3. A second handle 33 is fixed to the other end of the lead screw 18 located outside the mounting plate 3. The second handle 33 facilitates the rotation of the lead screw 18.

[0048] When it is necessary to adjust the distance between the cutting wheel 202 and the locking block 91, turn the second handle 33. The second handle 33 drives the lead screw 18 to rotate. The lead screw 18 drives the protrusion 32 to slide the adjusting plate 17 toward or away from the locking block 91, which helps to cut pile heads of different diameters and expands the scope of application to a certain extent.

[0049] The implementation principle of this application embodiment is as follows: During operation, the annular guide rail 6 is fitted around the CFG pile head, with the annular guide rail 6 and the CFG pile head having the same center. The stake 19 is inserted below the ground. According to the red paint markings, the annular guide rail 6 is moved to the required height, aligning the top wall of the slider 7 with the markings. The stake 19 is inserted into the ground to achieve relative fixation between the annular guide rail 6 and the pile head. Then, the slider 7 is moved to the side of the straight guide rail 8 away from the annular guide rail 6. The frame 1 is pushed close to the straight guide rail 8, aligning the locking block 91 on the mounting plate 3 with the slider 7. Then, the first handle 28 is rotated, which drives the screw 13 to rotate. The screw 13 drives the transmission block 12 to slide towards the corresponding through hole 27, gradually lowering the pull rope 11, so that the sliding plate 10 and the mounting plate... 3 and the cutting mechanism 2 move downwards under the action of gravity, the locking block 91 gradually approaches the slider 7, and then the inclined surface 16 of the insert block 921 gradually abuts against the top wall of the slot 14 and slides relative to each other. At this time, the insert block 921 slides into the connecting slot 29 in the direction closer to the connecting slot 29, compressing the push spring 9221 until the insert block 921 moves to be aligned with the slot 15. At this time, the compressed push spring 9221 pushes the insert block 921 to slide away from the connecting slot 29, so that the insert block 921 is engaged with the corresponding slot 15, thereby achieving relative fixation between the locking block 91 and the slider 7. Then, the first handle 28 is rotated to loosen the pull rope 11 of the transmission block 12, so that the pull rope 11 is in a slack state, ensuring that the push spring 9221 can push the insert block 921 into the slot 15. Then, turn the second handle 33. The lead screw 18 drives the protrusion 32 to slide the adjusting plate 17 towards the pile head, so that the cutting wheel 202 is close to the pile head. Then start the motor box 201 and push the frame 1 towards the pile head. At this time, the slider 7 slides towards the pile head in the straight guide rail 8. The cutting wheel 202 is driven to rotate by the motor box 201 to cut the pile head. When the slider 7 moves into the annular guide rail 6, push the frame 1 so that the locking block 91 on the mounting plate 3 drives the slider 7 to slide along the annular guide rail 6. At this time, the cutting wheel 202 performs a ring cut on the pile head. Since the slider 7 and the mounting plate 3 are relatively fixed, when the frame 1 shakes or tilts during the movement, it can be controlled by the ball joint 5 without affecting the smooth sliding of the mounting plate 3, thus ensuring the flatness of the pile head cutting surface.

[0050] After use, turn the first handle 28. The screw 13 drives the transmission block 12 to slide away from the corresponding through hole 27. The transmission block 12 pulls the corresponding pull rope 11. The pull rope 11 on the side closer to the locking block 91 pulls the connecting rope 30 first. At this time, the pull rope 11 on the side away from the locking block 91 is still in a slack state. The connecting rope 30 pulls the insert block 921 to slide towards the connecting groove 29. The insert block 921 moves into the corresponding connecting groove 29. Then the transmission block 12 continues to move and pull the pull rope 11, which enables the mounting plate 3 to drive the locking block 91 to move away from the slider 7, so as to disengage the locking block 91 from the slider 7.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pile head cutting machine for CFG piles, comprising a frame (1) and a cutting mechanism (2), said cutting mechanism (2) being used to cut CFG pile heads, characterized in that: The frame (1) is provided with a mounting plate (3), the cutting mechanism (2) is provided on the mounting plate (3), the top wall of the mounting plate (3) is provided with a connecting rod (4), the connecting rod (4) is connected to the frame (1) by a ball joint (5), the pile head cutting machine for CFG piles also includes an annular guide rail (6) and a slider (7), the annular guide rail (6) is used to be movably sleeved on the outside of the CFG pile head, the annular guide rail (6) is set with the same center as the CFG pile head, the annular guide rail (6) is provided with a fixing member for fixing the annular guide rail (6) relative to the ground, the slider (7) slides in the annular guide rail (6), the annular guide rail (6) is connected to a straight guide rail (8), the straight guide rail (8) is oriented away from C The FG pile head extends in the direction of the straight guide rail (8) for sliding cooperation with the slider (7). The mounting plate (3) is provided with a locking mechanism (9) for fixing the mounting plate (3) and the slider (7) relatively. A sliding plate (10) is slidably provided on the frame (1). The sliding plate (10) is located above the mounting plate (3). The sliding direction of the sliding plate (10) is set in the vertical direction. The end of the connecting rod (4) away from the mounting plate (3) is connected to the sliding plate (10) on the frame (1) through a ball joint (5). The mounting plate (3) is located above the slider (7). The frame (1) is provided with an adjustment group for adjusting the sliding plate (10) to drive the mounting plate (3) to slide in a direction closer to or away from the slider (7). The adjustment assembly includes a pull rope (11) mounted on the mounting plate (3), a transmission block (12) slidably mounted in the frame (1), and a sliding member mounted on the frame (1). The end of the pull rope (11) away from the mounting plate (3) slides through the sliding plate (10) and the frame (1) and connects to the transmission block (12). The sliding direction of the transmission block (12) is perpendicular to the sliding direction of the sliding plate (10). The sliding member is used to drive the transmission block (12) to slide towards or away from the sliding plate (10). The locking mechanism (9) includes a locking block (91) mounted on the mounting plate (3) and a locking component (92) mounted on the locking block (91). The locking block (91) is located away from the cutting mechanism (2). On one side of the pile head, the slider (7) has a slot (14) for engaging with the locking block (91). The locking assembly (92) is used to fix or disengage the locking block (91) from the slider (7). The locking assembly (92) includes an insert (921) that slides through the locking block (91) and a pusher (922) on the locking block (91). The sliding direction of the insert (921) is perpendicular to the sliding direction of the sliding plate (10). The inner wall of the slot (14) has a slot (15) for engaging with the insert (921). The side of the insert (921) near the slider (7) is an inclined surface (16). The inclined surface (16) slopes upward away from the locking block (91).The inclined surface (16) is used to slide relative to the top wall of the slot (14). The end of the pull rope (11) near the mounting plate (3) slides through the mounting plate (3) and the locking block (91), connecting to the side of the insert block (921) near the locking block (91). The pusher (922) is used to push the insert block (921) to slide away from the locking block (91).

2. The pile head cutting machine for CFG piles according to claim 1, characterized in that: The sliding component includes a screw (13) rotatably mounted on the frame (1), the axis of rotation of the screw (13) being parallel to the sliding direction of the transmission block (12), and the transmission block (12) being threadedly connected to the screw (13).

3. The pile head cutting machine for CFG piles according to claim 1, characterized in that: The pusher (922) includes a push spring (9221) for pushing the insert (921) to slide away from the locking block (91), one end of the push spring (9221) being disposed on the locking block (91) and the other end being disposed on the insert (921).

4. A pile head cutting machine for CFG piles according to claim 1, characterized in that: An adjusting plate (17) is slidably disposed on the mounting plate (3). The adjusting plate (17) is located on the side of the locking block (91) near the pile head. The sliding direction of the adjusting plate (17) is set in the horizontal direction. The adjusting plate (17) slides toward or away from the locking block (91). The cutting mechanism (2) is disposed on the adjusting plate (17). The mounting plate (3) is provided with a driving member for driving the adjusting plate (17) to drive the cutting mechanism (2) to slide toward or away from the locking block (91).

5. A pile head cutting machine for CFG piles according to claim 4, characterized in that: The driving component includes a lead screw (18) rotatably mounted on the mounting plate (3), the rotation axis of the lead screw (18) being parallel to the sliding direction of the adjusting plate (17), and the adjusting plate (17) being threadedly connected to the lead screw (18).

6. A pile head cutting machine for CFG piles according to any one of claims 1-5, characterized in that: The fastener includes a plurality of stakes (19) disposed on an annular guide rail (6), the plurality of stakes (19) being inserted into the ground.

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