A tracked mobile hydraulic pile cutter and its construction method

Abstract

This invention discloses a tracked mobile hydraulic pile cutter and its construction method, belonging to the field of civil engineering construction machinery technology. The tracked mobile hydraulic pile cutter includes a tracked mobile support system, a boom support system mounted on a support platform, a ring-disc hydraulic pile cutting system mounted at the boom front end of the boom support system, and a pump station and hydraulic control center. The ring-disc hydraulic pile cutting system includes a hydraulic cylinder seat, several hydraulic cylinders and pile cutting chisel assemblies, a locking mechanism, and two open / closed-loop power mechanisms. The tracked mobile hydraulic pile cutter can achieve walking and transportation functions through the tracked mobile support system, and uses the boom support system to achieve precise positioning and hoisting of the pile cutting location. The ring-disc hydraulic pile cutting system can be fitted onto the pile head from the side for pile cutting, improving the level of mechanization in construction, increasing construction efficiency, reducing labor costs, lowering construction safety risks, and reducing the requirements for clearance height.

Description

Technical Field

[0001] This invention relates to a tracked mobile hydraulic pile cutter and its construction method, belonging to the field of civil engineering construction machinery technology. Background Technology

[0002] In construction, cast-in-place concrete pile foundations are commonly used to reinforce the ground. To ensure the quality of the pile foundations and their effective connection with other superstructures, it is usually required that the piles be over-poured by 0.5 to 1 meter. Before constructing the superstructure, the pile heads (i.e., the over-poured concrete portion) need to be removed or cut off. Traditional pile head removal methods typically involve manual removal using tools such as pneumatic picks, followed by hoisting away the piles with a crane. This approach has many drawbacks, including high labor and machinery costs, significant construction safety risks, and low levels of mechanization.

[0003] Currently, some companies have developed simple hydraulic pile cutting devices. However, their application still requires a large-tonnage (≥20T) crane to pull out the pile head, which results in high human and machine input costs, high construction safety risks, and low mechanization levels. Furthermore, the hydraulic pile cutting device needs to be raised above the pile head and then lowered and fitted onto the pile head, requiring a large clearance height. Summary of the Invention

[0004] To address the problems of high labor and machine input costs, significant construction safety risks, low mechanization levels, and the need for large clearance heights in traditional pile head processing techniques, this invention proposes a tracked mobile hydraulic pile cutter and its construction method. This machine combines the functions of walking, hoisting, pile cutting, and transportation, and can cut the pile head by wrapping it around from the side, thus reducing the need for clearance heights.

[0005] To solve the above technical problems, the present invention includes the following technical solutions:

[0006] A tracked mobile hydraulic pile cutter, comprising:

[0007] Tracked mobile support system, used for movement and providing a support platform;

[0008] The boom support system is installed on the support platform. The boom support system includes a boom that can rotate in the horizontal plane and in the vertical plane. The boom includes a C-shaped end at the front end, and a set of connecting members is provided at each of the two open ends of the C-shaped end.

[0009] A ring-type hydraulic pile cutting system includes a hydraulic cylinder base, several hydraulic cylinders and a pile cutting steel rod assembly, a locking mechanism, and two open / closed-loop power mechanisms. The hydraulic cylinder base includes a first hydraulic cylinder base, a second hydraulic cylinder base, and a third hydraulic cylinder base. Both ends of the first hydraulic cylinder base are hinged to one end of the second and third hydraulic cylinder bases, respectively. The other ends of the second and third hydraulic cylinder bases are free ends and equipped with locking mechanisms. A lifting lug is provided at the top of each end of the first hydraulic cylinder base, and the tops of the two lifting lugs are respectively connected to the opposite end of the first hydraulic cylinder base. The bottom of the corresponding connecting component is connected; several hydraulic cylinders and pile cutting steel rod assemblies are evenly distributed radially on the hydraulic cylinder seat. The hydraulic cylinders and pile cutting steel rod assemblies include hydraulic cylinders and pile cutting steel rods. The hydraulic cylinders can drive the pile cutting steel rods to extend and retract; one end of each of the two open-loop power mechanisms is connected to both ends of the first hydraulic cylinder seat, and the other end is connected to the second hydraulic cylinder seat and the third hydraulic cylinder seat, respectively. The open-loop power mechanisms can make the second hydraulic cylinder seat and the third hydraulic cylinder seat rotate around the hinge point with the first hydraulic cylinder seat, so that the free ends move closer to or away from the first hydraulic cylinder seat.

[0010] The pump station and hydraulic control center supply oil to the hydraulic cylinders of the ring-type hydraulic pile cutting system through oil circuits.

[0011] Furthermore, the boom support system also includes one slewing bearing and two support hydraulic cylinders;

[0012] The slewing bearing, mounted on a support platform, includes a slewing bearing and can rotate in the horizontal plane via a slewing motor. The boom also includes a support arm, one end of which is connected to the non-free end of the C-shaped end, and the end of the support arm away from the C-shaped end is hinged to the slewing bearing. The support arm can rotate in the vertical plane along the hinge point. Two support hydraulic cylinders are respectively mounted on both sides of the boom. The bottom end of the support hydraulic cylinders is pin-fixed to the slewing bearing. The rotation centers of the two support hydraulic cylinders are coaxial. The rotation center of the boom is parallel to the rotation center of the support hydraulic cylinders, and the position of the boom's rotation center is higher than the position of the support hydraulic cylinders' rotation center. The piston rod end of the support hydraulic cylinder is hinged to the middle of the boom via a pin connection.

[0013] Furthermore, the locking mechanism is an open-loop automatic locking mechanism, which includes a rotating pin seat, a pin holder, a rotating pin, an electromagnet, and a spring.

[0014] The rotating pin seat is fixedly connected to the free end of the second hydraulic cylinder seat, and the pin holder is fixedly connected to the free end of the third hydraulic cylinder seat.

[0015] The rotating pin seat is provided with two U-shaped rotating pins spaced apart. The rotating pins include a horizontal rotating shaft and a vertical snap-fit ​​pin. The middle part of the rotating shaft is rotatably connected to the rotating pin seat via a rotating shaft. The snap-fit ​​pin is located at one end of the rotating shaft. A set of electromagnets is provided between the two rotating pins. The electromagnets are located at the end of the rotating shaft away from the snap-fit ​​pins. A spring is also provided between the two rotating pins. The spring is located on the rotating shaft at one end of the snap-fit ​​pin.

[0016] The pin holder includes a connecting section and a snap-fit ​​section. The connecting section and the snap-fit ​​section are arranged in a T-shape. One end of the connecting section is perpendicularly connected to the end of the third hydraulic cylinder seat, and the other end of the connecting section is connected to the middle of the inner side of the snap-fit ​​section. The end face of the snap-fit ​​section facing the snap-fit ​​pin is an arc surface, and the center of the arc surface is located on the connecting section. Two snap-fit ​​grooves are provided on the inner side of the snap-fit ​​section. The two snap-fit ​​grooves are located on both sides of the connecting section, and the radius of the arc-shaped groove of the snap-fit ​​groove matches the outer diameter of the snap-fit ​​position of the snap-fit ​​pin.

[0017] Furthermore, the first hydraulic cylinder seat is a semi-circular ring, and the second and third hydraulic cylinder seats are small circular rings; when the locking mechanism is in the locked state, the first hydraulic cylinder seat, the second hydraulic cylinder seat, the third hydraulic cylinder seat, and the locking mechanism form a ring structure.

[0018] Furthermore, the first hydraulic cylinder seat, the second hydraulic cylinder seat, and the third hydraulic cylinder seat all include an upper flat steel plate, a lower flat steel plate, and a vertical steel plate. The upper flat steel plate and the lower flat steel plate are arranged opposite each other, and the top and bottom ends of the vertical steel plate are welded and fixed to the sides of the upper flat steel plate and the sides of the lower flat steel plate, respectively. The vertical steel plate is provided with mounting holes for mounting the hydraulic cylinder and the pile cutting steel rod assembly.

[0019] Furthermore, a guide steel pipe is provided in the mounting hole, and the guide steel pipe is arranged radially along the hydraulic cylinder seat;

[0020] One end of the hydraulic cylinder extends into the guide steel pipe and is fixedly connected to the guide steel pipe, and the pile cutting steel rod is coaxial with the guide steel pipe.

[0021] Furthermore, the open-loop power mechanism includes a hydraulic telescopic mechanism, and hydraulic cylinder hinge supports and telescopic rod hinge supports respectively disposed at both ends of the hydraulic telescopic mechanism;

[0022] The hydraulic cylinder hinge support and the telescopic rod hinge support of one of the open-loop power mechanisms are respectively fixed on the first hydraulic cylinder seat and the second hydraulic cylinder seat; the hydraulic cylinder hinge support and the telescopic rod hinge support of the other open-loop power mechanism are respectively fixed on the first hydraulic cylinder seat and the third hydraulic cylinder seat.

[0023] Accordingly, the present invention also provides a construction method for the tracked mobile hydraulic pile cutter, comprising the following steps:

[0024] Step 1: The pump station and hydraulic control center control the hydraulic cylinders to bring the pile cutting steel chisel to its minimum stroke and the locking mechanism to the open state. The open and closed loop power mechanism is controlled to open the free ends of the second and third hydraulic cylinder seats, making the hydraulic cylinder seats form an outward-opening C-shape. The tracked mobile support system is used to move the tracked mobile hydraulic pile cutter to the side of the pile head to be cut, so that the ring moves towards the pile head and the pile head is in the center position of the hydraulic cylinder seat.

[0025] Step 2: Use the boom support system to adjust the height of the ring-type hydraulic pile cutting system so that the pile cutting steel rod is at the pile cutting height;

[0026] Step 3: Using the open-loop and closed-loop power mechanism, the second and third hydraulic cylinder seats are rotated around the hinge point with the first hydraulic cylinder seat, so that the free ends are close together, the locking mechanism is in the locked state, and the hydraulic cylinder seats are in the closed-loop state.

[0027] Step 4: The pump station and hydraulic control center control the hydraulic cylinders to push the pile cutting steel rods synchronously, so that the pile cutting steel rods symmetrically squeeze the pile concrete, thereby cutting off the pile head.

[0028] Step 5: After the pile head is cut off, the bottom is supported on the pile cutting steel rod. The boom support system is used to raise the ring-type hydraulic pile cutting system to separate the cut-off pile head from the original pile body and reinforcing steel.

[0029] Step Six: The tracked mobile hydraulic pile cutter moves the pile head to the designated site, opens the locking mechanism, controls the open and closed loop power mechanism to open the free ends of the second and third hydraulic cylinder seats, controls the hydraulic cylinder to retract the pile cutting steel rod, and lowers the pile head for centralized storage.

[0030] Furthermore, the locking mechanism is an open-loop automatic locking mechanism, which includes a rotating pin seat, a pin holder, a rotating pin, an electromagnet, and a spring. The rotating pin seat is fixedly connected to the end of the second hydraulic cylinder seat, and the pin holder is fixedly connected to the end of the third hydraulic cylinder seat. Two U-shaped rotating pins are spaced apart on the rotating pin seat. Each rotating pin includes a horizontal rotating shaft and a vertical snap-fit ​​pin. The middle part of the rotating shaft is rotatably connected to the rotating pin seat via a rotating shaft, and the snap-fit ​​pin is located at one end of the rotating shaft. A set of electromagnets is provided between the two rotating pins. The end of the rotating shaft away from the snap-fit ​​pin is connected to a spring between the two rotating pins. The spring is located on the rotating shaft at one end of the snap-fit ​​pin. The pin holder includes a connecting section and a snap-fit ​​section. The connecting section and the snap-fit ​​section are arranged in a T-shape. One end of the connecting section is perpendicularly connected to the end of the third hydraulic cylinder seat, and the other end of the connecting section is connected to the middle of the inner side of the snap-fit ​​section. The end face of the snap-fit ​​section facing the snap-fit ​​pin is an arc surface. The center of the arc surface is located on the connecting section. Two snap-fit ​​grooves are provided on the inner side of the snap-fit ​​section. The two snap-fit ​​grooves are located on both sides of the connecting section. The radius of the arc-shaped groove of the snap-fit ​​groove matches the outer diameter of the snap-fit ​​position of the snap-fit ​​pin.

[0031] In steps one and six, the locking mechanism is put into the open state by extending the open / closed loop power mechanism to move the locking pin of the rotating pin out of the locking groove; controlling the direction of the electromagnet current to make the two electromagnets attract each other, causing the spring to open, causing the locking pin to open and move away from the end edge of the pin holder; then the open / closed loop power mechanism is contracted to separate the locking pin of the rotating pin from the end of the pin holder.

[0032] In step three, the locking mechanism is put into a locked state by the following steps: under the assistance of the open and closed loop power mechanism, the locking pin of the rotating pin first touches the arc surface at the end of the pin holder, and the locking pin slides along the arc surface to the groove edge of the pin holder; under the action of the spring force, the locking pin clamps the connecting section of the pin holder.

[0033] Furthermore, the opening and closing loop power mechanism extends, causing the locking pin of the rotating pin to move out of the locking groove. This is a short-distance extension operation, and the extension distance is denoted as... L 1, L 1= D + d , D The depth of the buckle slot. d As a preset value, d =1~6cm.

[0034] Compared with the prior art, the present invention has the following advantages and positive effects due to the adoption of the above technical solutions: The tracked mobile hydraulic pile cutter of the present invention can realize the walking and transportation functions through the tracked mobile support system, realize the precise positioning and hoisting of the pile cutting position through the boom support system, and the ring-type hydraulic pile cutting system can be sleeved on the pile head from the side to cut the pile. The pump station and hydraulic control center can control the pile cutting, which improves the level of mechanization of construction, improves construction efficiency, reduces labor costs, reduces construction safety risks, and reduces the requirements for clearance height. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a tracked mobile hydraulic pile cutter in one embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the boom support system in one embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of a ring-shaped hydraulic pile-cutting system in one embodiment of the present invention;

[0038] Figure 4 This is a split schematic diagram of the hydraulic cylinder seat in one embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of the hydraulic cylinder and pile cutting steel rod assembly in one embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the opening and closing loop automatic locking mechanism in one embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the opening and closing of the automatic locking mechanism according to an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the open-loop and closed-loop power mechanism in one embodiment of the present invention.

[0043] The numbers in the diagram are as follows:

[0044] 10- Tracked moving support system;

[0045] 20-Boom support system; 21-Slewing bearing; 22-Boom; 23-Support hydraulic cylinder; 24-Connecting component;

[0046] 30 - Ring-type hydraulic pile cutting system; 310 - Hydraulic cylinder seat; 311 - First hydraulic cylinder seat; 3111 - Upper surface steel plate; 3112 - Vertical steel plate; 3113 - Mounting hole; 312 - Second hydraulic cylinder seat; 313 - Third hydraulic cylinder seat; 320 - Hydraulic cylinder and pile cutting steel rod assembly; 321 - Hydraulic cylinder; 322 - Pile cutting steel rod; 330 - Opening and closing loop automatic locking mechanism; 331 - Rotary pin seat; 332 - Rotary pin; 3321 - Rotating shaft; 3322 - Snap-on pin; 333 - Electromagnet; 334 - Spring; 335 - Pin seat; 3351 - Connecting section; 3352 - Snap-on section; 3353 - Arc surface; 3354 - Snap-on groove; 340 - Opening / closing loop power mechanism; 341 - Hydraulic telescopic mechanism; 342 - Hydraulic cylinder hinge support; 343 - Telescopic rod hinge support. Detailed Implementation

[0047] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed explanation of the tracked mobile hydraulic pile cutter and its construction method provided by the present invention. The advantages and features of the present invention will become clearer from the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0048] Example 1

[0049] like Figure 1 As shown, the tracked mobile hydraulic pile cutter provided in this embodiment includes a tracked mobile support system 10, a boom support system 20, a ring-type hydraulic pile cutting system 30, and a pump station and hydraulic control center.

[0050] The tracked mobile support system 10 is mainly used for movement and providing a support platform for the boom support system 20. For example, the tracked mobile support system 10 includes two sets of tracks arranged on the left and right sides, a hydraulic motor, a reducer, several rollers, and an upper support platform, used to achieve highly adaptable and safe movement of the hydraulic pile cutter in complex terrain. The rollers are fixed to both sides of the support platform via a central shaft. The tracks are fitted onto the outer ring of the rollers and can roll synchronously with the rollers without slippage. The hydraulic motor is connected to the reducer and controls the rotation of the central shaft, thereby driving the rollers to rotate, causing the tracks to rotate, thus achieving the movement function. The specific structure and control method of the tracked mobile support system 10 can be implemented using existing technologies, and will not be elaborated here.

[0051] The boom support system 20 is used to adjust the height and horizontal position of the disc-type hydraulic pile cutting system 30, and also serves as the supporting foundation for the disc-type hydraulic pile cutting system 30, the pump station, and the hydraulic control center. Combined with... Figure 1 and Figure 2As shown, the boom support system 20 includes one slewing bearing 21, one boom 22, two support hydraulic cylinders 23, and two sets of connecting components 24. The slewing bearing 21 is mounted on the support platform and includes a slewing bearing, enabling horizontal rotation via a slewing motor. The boom 22 has a "7" shape in its side view, with a C-shaped end at the front. The other end of the boom is hinged to the slewing bearing, allowing rotation in the vertical plane along the hinge point. Each of the two open ends of the C-shaped end is equipped with a set of connecting components 24, which are vertically positioned and connected to the open ends of the C-shaped end via pins. The two support hydraulic cylinders 23 are respectively located on both sides of the boom 22. The bottom of each support hydraulic cylinder 23 is pin-connected to the slewing bearing 21. The rotation centers of the two support hydraulic cylinders are coaxial, with the boom's rotation center parallel to the support hydraulic cylinder's rotation center, and the boom's rotation center being higher than the support hydraulic cylinder's rotation center. The piston rod end supporting the hydraulic cylinder is connected to a coaxial support point in the middle of the boom via a pin connection. The connecting component is a pin connection, with one end connected to the connecting node at the front end of the boom and the other end connected to the pin connection node at the end of the semi-circular hydraulic cylinder seat of the ring-type hydraulic pile cutting system 30.

[0052] Combination Figure 1 and Figure 3 As shown, the ring-type hydraulic pile-cutting system 30 includes a hydraulic cylinder seat 31, eight hydraulic cylinders and a pile-cutting steel rod assembly 32, a locking mechanism, and two open-closed-loop power mechanisms 34. Combined with... Figure 1 , Figure 3 and Figure 4As shown, the hydraulic cylinder seat 31 includes a first hydraulic cylinder seat 311, a second hydraulic cylinder seat 312, and a third hydraulic cylinder seat 313. The first hydraulic cylinder seat 311 includes an upper flat steel plate 3111, a lower flat steel plate (not shown), and a vertical steel plate 3112. The upper and lower flat steel plates are arranged opposite each other. The top end of the vertical steel plate is welded to the side of the upper flat steel plate, and the bottom end is welded to the side of the lower flat steel plate. The vertical steel plate is a bent steel plate, and each surface has a mounting hole 3113 for mounting the hydraulic cylinder and the pile cutting steel rod assembly 32. The first hydraulic cylinder seat 311 is semi-circular, and each of the two open ends is provided with a connecting lug 3114. The connecting lug 3114 is provided with a pin hole for mounting the pin 3115. Both the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 include an upper flat steel plate, a lower flat steel plate, and a vertical steel plate. The vertical steel plate is also provided with mounting holes for installing hydraulic cylinders and pile cutting steel rod assembly 32. One end of the second hydraulic cylinder seat 312 is provided with a pin hole and is pinned to one end of the first hydraulic cylinder seat 311, and the other end is an open end. One end of the third hydraulic cylinder seat 313 is provided with a pin hole and is pinned to the other end of the first hydraulic cylinder seat 311, and the other end of the third hydraulic cylinder seat 313 is an open end. An open-closed loop automatic locking mechanism 33 is provided between the open end of the second hydraulic cylinder seat 312 and the open end of the third hydraulic cylinder seat 313. The first hydraulic cylinder seat 311 is a semi-circular ring, and the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 are small circular rings. The first hydraulic cylinder seat 311, the second hydraulic cylinder seat 312, the third hydraulic cylinder seat 313 and the opening and closing automatic locking mechanism 33 form a complete circular ring structure.

[0053] Combination Figure 1 , Figures 3 to 5 As shown, the hydraulic cylinder and pile-cutting steel rod assembly 32 is the device for realizing the pile-cutting function in this invention. It includes a hydraulic cylinder 321 and a pile-cutting steel rod 322. The hydraulic cylinder 321 can drive the pile-cutting steel rod 322 to extend and retract. The pile-cutting steel rod 322 includes a tip and can move radially under the drive of the hydraulic cylinder. Eight hydraulic cylinders 321 arranged in a ring radially push the pile-cutting steel rod 322 to symmetrically squeeze the pile concrete, which can cause the pile concrete to crack and penetrate radially to form a plane, thereby achieving the cutting off of the pile head. The hydraulic cylinder and pile-cutting steel rod assembly 32 is arranged at equal angles along the hydraulic cylinder seat 31.

[0054] Combination Figure 1 , Figure 3 , Figure 6 , Figure 7As shown, the locking mechanism only needs to be able to lock the free ends of the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 together and be able to open. Specifically, common locking methods such as hook locking and snap-locking can be used. In a preferred embodiment, the locking mechanism adopts an open-closed loop automatic locking mechanism 33, including a rotating pin seat 331, a rotating pin 332, an electromagnet 333, a spring 334, and a pin holder 335. The rotating pin seat 331 is fixedly connected to the free end of the second hydraulic cylinder seat 312, and the pin holder 335 is fixedly connected to the free end of the third hydraulic cylinder seat 313. The rotating pin seat 331 is provided with two spaced-apart U-shaped rotating pins 332. Each rotating pin 332 includes a horizontal rotating shaft 3321 and a vertical snap-lock pin 3322. The middle part of the rotating shaft 3321 is rotatably connected to the rotating pin seat 331 via a rotating shaft, and the snap-lock pin 3322 is located at one end of the rotating shaft 3321. A set of electromagnets 333 is provided between the two rotating pins 332 on the rotating pin seat 331. The electromagnets 333 are located at the end of the rotating shaft away from the snap-fit ​​pin. A spring 334 is also provided between the two rotating pins 332. The spring 334 is located on the rotating shaft at the end of the snap-fit ​​pin.

[0055] The pin holder 335 includes a connecting section 3351 and a snap-fit ​​section 3352. The connecting section 3351 and the snap-fit ​​section 3352 are arranged in a T-shape. One end of the connecting section is perpendicularly connected to the end of the third hydraulic cylinder seat 313, and the other end of the connecting section is connected to the middle of the inner side of the snap-fit ​​section. The outer end face of the snap-fit ​​section of the pin holder 335 is an arc surface 3353, which is arranged along the connecting section. Two snap-fit ​​grooves 3354 are provided on the inner side of the snap-fit ​​section. The two snap-fit ​​grooves are located on both sides of the connecting section. The snap-fit ​​grooves are arc-shaped, and the radius of the arc-shaped grooves matches the outer diameter of the snap-fit ​​pin. When the snap-fit ​​pin 3322 abuts against the arc surface 3353 of the snap-fit ​​section of the pin holder 335, under the thrust of the opening and closing loop power mechanism 34, the two snap-fit ​​pins 3322 slide to both sides along the arc surface 3353, and the elastic potential energy of the spring 334 gradually increases. When the snap-fit ​​pins pass the end of the arc surface, under the tension of the spring 334, the two snap-fit ​​pins move toward the connecting section of the pin holder 335, at which point the opening and closing loop automatic locking mechanism 33 is in a locked state. Under the tension of the opening and closing loop power mechanism 34, or when the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 are subjected to circumferential tension after the pile cutting steel rod is tightened against the pile head, the snap-fit ​​pins move into the snap-fit ​​groove 3354 of the pin holder 335, further enhancing the locking effect of the opening and closing loop automatic locking mechanism 33. When the snap-fit ​​pin 3322 is located in the snap-fit ​​groove 3354, the automatic locking mechanism 33 is in the locked state. The tension of the spring 334 can prevent the two snap-fit ​​pins from sliding out of the snap-fit ​​groove. At this time, the two electromagnets 333 can also generate a repulsive force, causing the two snap-fit ​​pins to tend to clamp the pin holder 335, further preventing the snap-fit ​​pins from sliding out of the snap-fit ​​groove. By changing the direction of the current, the two electromagnets 333 can generate an attractive force. When the torque generated by the attraction of the electromagnets is greater than the torque of the spring force of the spring 334, the rotating shaft will rotate, causing the two snap-fit ​​pins to disengage from the snap-fit ​​groove. After the rotating pin 332 separates from the pin holder 335, the automatic locking mechanism 33 is in the open state.

[0056] The open / closed-loop power mechanism 34 primarily enables the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 to rotate around the hinge point with the first hydraulic cylinder seat 311. This can be achieved by a motor driving gear rotation, or by using an electric push rod. In one specific embodiment, combined with... Figures 1 to 6As shown, the open-loop power mechanism 34 includes two hydraulic telescopic mechanisms 341, and cylinder hinge supports 342 and telescopic rod hinge supports 343 respectively disposed at both ends of the hydraulic telescopic mechanisms 341. The cylinder hinge support 342 at one end of one hydraulic telescopic mechanism 341 is welded to the upper surface steel plate of the first hydraulic cylinder seat 311, and the telescopic rod hinge support 343 at the other end is welded to the upper surface steel plate of the second hydraulic cylinder seat 312. The cylinder hinge support 342 at the other end of the other hydraulic telescopic mechanism 341 is welded to the upper surface steel plate of the first hydraulic cylinder seat 311, and the telescopic rod hinge support 343 at the other end is welded to the upper surface steel plate of the third hydraulic cylinder seat 313. The extension and retraction of the hydraulic telescopic mechanism 341 can help the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 to rotate in a plane around the pin. When the two hydraulic telescopic mechanisms 341 retract simultaneously, the ends of the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 can be brought closer together, thereby closing the hydraulic cylinder seat 31. When the two hydraulic telescopic mechanisms 341 extend simultaneously, the ends of the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 can be moved away from each other, thereby opening the hydraulic cylinder seat 31.

[0057] The pump station and hydraulic control center are located on the upper part of the slewing bearing of the boom support system 20. It includes a pump station, multiple oil pipes, and a control system. Each oil pipe can be controlled independently. One oil pipe is connected to the hydraulic cylinder of the ring-type hydraulic pile cutting system 30, another oil pipe is connected to the two vertical hydraulic lifting devices of the boom support system 20, and two oil pipes are connected to the hydraulic motors on the left and right sides of the tracked mobile support system 10, respectively. The control system can control the pump station to supply oil to each oil pipe, achieving hydraulic control.

[0058] Example 2

[0059] This embodiment provides a construction method for a tracked mobile hydraulic pile cutter, combined with... Figures 1 to 8 As shown in the figure, and in conjunction with the description of Embodiment 1, the construction method will be further described below. The construction method includes the following steps:

[0060] Step 1: Control the hydraulic cylinder 321 to make the pile cutting steel rod 322 reach its minimum stroke and the locking mechanism be in the open state. Control the open and closed loop power mechanism 34 to open the free ends of the second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313, so that the hydraulic cylinder seat 31 is in an outward-opening C-shape. Use the track mobile support system 10 to move the track mobile hydraulic pile cutter to the side of the pile head to be cut, so that the ring moves towards the pile head and the pile head is in the center position of the hydraulic cylinder seat.

[0061] Step 2: Use the boom support system 20 to adjust the height of the ring-type hydraulic pile cutting system 30 so that the pile cutting steel rod 322 is at the pile cutting height.

[0062] Step 3: The second hydraulic cylinder seat 312 and the third hydraulic cylinder seat 313 are rotated around the hinge point with the first hydraulic cylinder seat 311 by the open and closed loop power mechanism, so that the free ends are close together, and then the locking mechanism is locked and the hydraulic cylinder seat is in a closed loop state.

[0063] Step 4: The pump station and hydraulic control center control the hydraulic cylinder 321 to synchronously push the pile cutting steel rod 322, so that the pile cutting steel rod symmetrically squeezes the pile concrete, causing the pile concrete to crack and penetrate radially to form a plane, thereby achieving the cutting off of the pile head.

[0064] Step 5: The bottom of the cut-off pile head is supported on the cutting steel rod of the ring-type hydraulic pile cutting system 30. The ring-type hydraulic pile cutting system 30 is raised using the boom support system 20 to separate the cut-off pile head from the original pile body and reinforcing steel.

[0065] Step Six: The tracked mobile hydraulic pile cutter moves the pile head to the designated site, opens the locking mechanism, controls the open and closed loop power mechanism to open the free ends of the second and third hydraulic cylinder seats, and controls the hydraulic cylinders of the pump station and hydraulic control center to retract the pile cutting steel rod, and puts the pile head down for centralized storage.

[0066] In one specific embodiment, the locking mechanism is an open-loop automatic locking mechanism 33, the specific structure of which is described in Embodiment 1. Specifically, in steps one and six, the locking mechanism is in the open state by: the open-loop power mechanism 34 extending to move the locking pin 3322 of the rotating pin 332 out of the locking groove 3354; controlling the direction of the electromagnet current to make the two electromagnets attract each other, causing the spring to open, opening the locking pin and moving it away from the end edge of the pin holder; then, the open-loop power mechanism retracting to separate the locking pin of the rotating pin from the end of the pin holder. In step three, the locking mechanism is in the locked state by: under the assistance of the open-loop power mechanism 34, the locking pin of the rotating pin first touches the arc surface of the end of the pin holder, and slides along the arc surface to the edge of the slot of the pin holder; under the elastic force of the spring, the locking pin clamps the connecting section of the pin holder.

[0067] It should be noted that when the automatic locking mechanism is in the locked state, if the latching pin is located in the latching groove, when the automatic locking mechanism changes from the locked state to the open state, the hydraulic telescopic mechanism 341 of the automatic locking mechanism 34 first performs an extension operation. This is a short-distance extension operation, and the extension distance is denoted as [missing information]. L 1, L 1= D + d , D The depth of the buckle slot. d For example, a preset valued =1~6cm, is to allow the locking pin 3322 of the rotating pin 332 to move out of the locking groove 3354.

[0068] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A tracked mobile hydraulic pile cutter, characterized in that, include: Tracked mobile support system, used for movement and providing a support platform; The boom support system is installed on the support platform. The boom support system includes a boom that can rotate in the horizontal plane and in the vertical plane. The boom includes a C-shaped end at the front end, and a set of connecting members is provided at each of the two open ends of the C-shaped end. A ring-type hydraulic pile cutting system includes a hydraulic cylinder base, several hydraulic cylinders and a pile cutting steel rod assembly, a locking mechanism, and two open / closed-loop power mechanisms. The hydraulic cylinder base includes a first hydraulic cylinder base, a second hydraulic cylinder base, and a third hydraulic cylinder base. Both ends of the first hydraulic cylinder base are hinged to one end of the second and third hydraulic cylinder bases, respectively. The other ends of the second and third hydraulic cylinder bases are free ends and equipped with locking mechanisms. A lifting lug is provided at the top of each end of the first hydraulic cylinder base, and the tops of the two lifting lugs are respectively connected to the opposite end of the first hydraulic cylinder base. The bottom of the corresponding connecting component is connected; several hydraulic cylinders and pile cutting steel rod assemblies are evenly distributed radially on the hydraulic cylinder seat. The hydraulic cylinders and pile cutting steel rod assemblies include hydraulic cylinders and pile cutting steel rods. The hydraulic cylinders can drive the pile cutting steel rods to extend and retract; one end of each of the two open-loop power mechanisms is connected to both ends of the first hydraulic cylinder seat, and the other end is connected to the second hydraulic cylinder seat and the third hydraulic cylinder seat, respectively. The open-loop power mechanisms can make the second hydraulic cylinder seat and the third hydraulic cylinder seat rotate around the hinge point with the first hydraulic cylinder seat, so that the free ends move closer to or away from the first hydraulic cylinder seat. The pump station and hydraulic control center supply oil to the hydraulic cylinders of the ring-disc hydraulic pile cutting system through oil circuits. The locking mechanism is an open-loop automatic locking mechanism, which includes a rotating pin seat, a pin holder, a rotating pin, an electromagnet, and a spring. The rotating pin seat is fixedly connected to the free end of the second hydraulic cylinder seat, and the pin holder is fixedly connected to the free end of the third hydraulic cylinder seat. The rotating pin seat is provided with two U-shaped rotating pins spaced apart. The rotating pins include a horizontal rotating shaft and a vertical snap-fit ​​pin. The middle part of the rotating shaft is rotatably connected to the rotating pin seat via a rotating shaft. The snap-fit ​​pin is located at one end of the rotating shaft. A set of electromagnets is provided between the two rotating pins. The electromagnets are located at the end of the rotating shaft away from the snap-fit ​​pins. A spring is also provided between the two rotating pins. The spring is located on the rotating shaft at one end of the snap-fit ​​pin. The pin holder includes a connecting section and a snap-fit ​​section. The connecting section and the snap-fit ​​section are arranged in a T-shape. One end of the connecting section is perpendicularly connected to the end of the third hydraulic cylinder seat, and the other end of the connecting section is connected to the middle of the inner side of the snap-fit ​​section. The end face of the snap-fit ​​section facing the snap-fit ​​pin is an arc surface, and the center of the arc surface is located on the connecting section. Two snap-fit ​​grooves are provided on the inner side of the snap-fit ​​section. The two snap-fit ​​grooves are located on both sides of the connecting section, and the radius of the arc-shaped groove of the snap-fit ​​groove matches the outer diameter of the snap-fit ​​position of the snap-fit ​​pin.

2. The tracked mobile hydraulic pile cutter as described in claim 1, characterized in that, The boom support system also includes one slewing bearing and two support hydraulic cylinders; A slewing bearing is mounted on a support platform and includes a slewing bearing that can rotate in the horizontal plane driven by a slewing motor. The boom also includes a support arm, one end of which is connected to the non-free end of the C-shaped end, and the end of the support arm away from the C-shaped end is hinged to the slewing bearing. The support arm can rotate in the vertical plane along the hinge point. Two support hydraulic cylinders are respectively mounted on both sides of the boom. The bottom end of the support hydraulic cylinders is pin-fixed to the slewing bearing. The rotation centers of the two support hydraulic cylinders are coaxial. The rotation center of the boom is parallel to the rotation center of the support hydraulic cylinders, and the position of the boom's rotation center is higher than the position of the support hydraulic cylinders' rotation center. The piston rod end of the support hydraulic cylinder is hinged to the middle of the boom via a pin connection.

3. The tracked mobile hydraulic pile cutter as described in claim 1, characterized in that, The first hydraulic cylinder seat is a semi-circular ring, and the second and third hydraulic cylinder seats are small circular rings; when the locking mechanism is in the locked state, the first hydraulic cylinder seat, the second hydraulic cylinder seat, the third hydraulic cylinder seat, and the locking mechanism form a ring structure.

4. The tracked mobile hydraulic pile cutter as described in claim 3, characterized in that, The first, second, and third hydraulic cylinder seats each include an upper flat steel plate, a lower flat steel plate, and a vertical steel plate. The upper and lower flat steel plates are arranged opposite each other, and the top and bottom ends of the vertical steel plate are welded and fixed to the sides of the upper and lower flat steel plates, respectively. The vertical steel plate is provided with mounting holes for mounting the hydraulic cylinder and the pile cutting steel rod assembly.

5. The tracked mobile hydraulic pile cutter as described in claim 4, characterized in that, A guide steel pipe is provided in the mounting hole, and the guide steel pipe is arranged radially along the hydraulic cylinder seat; One end of the hydraulic cylinder extends into the guide steel pipe and is fixedly connected to the guide steel pipe, and the pile cutting steel rod is coaxial with the guide steel pipe.

6. The tracked mobile hydraulic pile cutter as described in claim 1, characterized in that, The open-loop power mechanism includes a hydraulic telescopic mechanism, and hydraulic cylinder hinge supports and telescopic rod hinge supports respectively located at both ends of the hydraulic telescopic mechanism; The hydraulic cylinder hinge support and the telescopic rod hinge support of one of the open-loop power mechanisms are respectively fixed on the first hydraulic cylinder seat and the second hydraulic cylinder seat; the hydraulic cylinder hinge support and the telescopic rod hinge support of the other open-loop power mechanism are respectively fixed on the first hydraulic cylinder seat and the third hydraulic cylinder seat.

7. A construction method for a tracked mobile hydraulic pile cutter as described in claim 1, characterized in that, Includes the following steps: Step 1: The pump station and hydraulic control center control the hydraulic cylinders to bring the pile cutting steel chisel to its minimum stroke and the locking mechanism to the open state. The open and closed loop power mechanism is controlled to open the free ends of the second and third hydraulic cylinder seats, making the hydraulic cylinder seats form an outward-opening C-shape. The tracked mobile support system is used to move the tracked mobile hydraulic pile cutter to the side of the pile head to be cut, so that the ring moves towards the pile head and the pile head is in the center position of the hydraulic cylinder seat. Step 2: Use the boom support system to adjust the height of the ring-type hydraulic pile cutting system so that the pile cutting steel rod is at the pile cutting height; Step 3: Using the open-loop and closed-loop power mechanism, the second and third hydraulic cylinder seats are rotated around the hinge point with the first hydraulic cylinder seat, so that the free ends are close together, the locking mechanism is in the locked state, and the hydraulic cylinder seats are in the closed-loop state. Step 4: The pump station and hydraulic control center control the hydraulic cylinders to push the pile cutting steel rods synchronously, so that the pile cutting steel rods symmetrically squeeze the pile concrete, thereby cutting off the pile head. Step 5: After the pile head is cut off, the bottom is supported on the pile cutting steel rod. The boom support system is used to raise the ring-type hydraulic pile cutting system to separate the cut-off pile head from the original pile body and reinforcing steel. Step Six: The tracked mobile hydraulic pile cutter moves the pile head to the designated site, opens the locking mechanism, controls the open and closed loop power mechanism to open the free ends of the second and third hydraulic cylinder seats, controls the hydraulic cylinder to retract the pile cutting steel rod, and lowers the pile head for centralized storage.

8. The construction method of the tracked mobile hydraulic pile cutter as described in claim 7, characterized in that, In steps one and six, the locking mechanism is put into the open state by extending the open / closed loop power mechanism to move the locking pin of the rotating pin out of the locking groove; controlling the direction of the electromagnet current to make the two electromagnets attract each other, causing the spring to open, causing the locking pin to open and move away from the end edge of the pin holder; then the open / closed loop power mechanism is contracted to separate the locking pin of the rotating pin from the end of the pin holder. In step three, the locking mechanism is put into a locked state by the following steps: under the assistance of the open and closed loop power mechanism, the locking pin of the rotating pin first touches the arc surface at the end of the pin holder, and the locking pin slides along the arc surface to the groove edge of the pin holder; under the action of the spring force, the locking pin clamps the connecting section of the pin holder.

9. The construction method of the tracked mobile hydraulic pile cutter as described in claim 8, characterized in that, The opening and closing loop power mechanism extends, causing the locking pin of the rotating pin to move out of the locking groove. This is a short-distance extension operation, and the extension distance is denoted as [missing information]. L 1, L 1= D + d , D The depth of the buckle slot. d As a preset value, d =1~6cm.

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