Full-automatic hydraulic pile breaking machine and straight cylinder type hydraulic breaking mechanism thereof

Abstract

The invention discloses a full-automatic hydraulic pile breaking machine and a straight cylinder type hydraulic breaking mechanism thereof, and relates to the field of straight cylinder type hydraulic breaking, the full-automatic hydraulic pile breaking machine comprises a connecting frame, the connecting frame is fixedly connected with a fixing barrel, an oil cylinder is slidably connected in the fixing barrel, a telescopic mechanism is arranged between the end of the oil cylinder and the inner wall of the fixing barrel, and the telescopic mechanism is connected with the connecting frame. A locking mechanism used for limiting sliding of the oil cylinder is arranged between the end of the oil cylinder and the fixing barrel, the locking state of the locking mechanism at the end of the oil cylinder is different from the telescopic state of the telescopic mechanism, one end of the drill rod is connected to a piston in the oil cylinder, and the other end of the drill rod penetrates out of the oil cylinder and penetrates through the connecting frame at the same time. The fixing barrel is fixedly connected to the connecting frame, the oil cylinder is slidably connected into the fixing barrel, the telescopic column is used for controlling the whole oil cylinder to stretch out and draw back quickly, the head of a steel chisel can make contact with a pile head more quickly, meanwhile, after crushing is completed, the steel chisel quickly releases the crushed pile head, and the next section of pile head can be crushed conveniently; and the crushing efficiency of the pile head is effectively improved.

Description

Technical Field

[0001] The invention relates to the field of straight-cylinder hydraulic crushing, in particular to a fully automatic hydraulic pile breaker and a straight-cylinder hydraulic crushing mechanism thereof. Background Art

[0002] The hydraulic pile breaker is driven by hydraulics and can be installed and disassembled by itself according to the diameter of the cast-in-place pile head. It is usually installed at the front end of an excavator or a crane and uses the power of the excavator or hydraulic station to break piles, mainly solid cast-in-place piles and solid precast piles.

[0003] In the prior art, the straight cylinder hydraulic pile breaker generally adopts a hydraulic oil inlet and outlet respectively arranged at both ends of the oil cylinder, and the power of the hydraulic station is used to move the piston connected to the steel drill in the oil cylinder, thereby controlling the extension and retraction of the steel drill to achieve the crushing of the concrete pile head.

[0004] With regard to the above-mentioned related technologies, in order to be able to apply sufficient pressure to the concrete, the cross-sectional area of ​​the oil cylinder of the straight-cylinder hydraulic pile breaker in the prior art is generally much larger than the cross-sectional areas of the oil inlet and the oil outlet. When the number of oil cylinders is large, the speed at which the hydraulic station pumps the hydraulic oil is limited, which can easily lead to a slow extension and retraction speed of the drill rod. Before the drill rod contacts the pile head and when the crushed pile head needs to be released, the slowly extending and retracting steel drill rod can easily affect the crushing efficiency of the pile head. In summary, the efficiency of the existing hydraulic pile breaker in crushing pile heads needs to be improved. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a fully automatic hydraulic pile breaker and a straight-cylinder hydraulic crushing mechanism thereof, so as to solve the technical problem that the existing hydraulic pile breaker has low efficiency in crushing pile heads.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a straight-cylinder hydraulic breaking mechanism of a fully automatic hydraulic pile breaker, comprising a connecting frame, the connecting frame is fixedly connected to a fixed cylinder, an oil cylinder is slidably connected in the fixed cylinder, a telescopic mechanism is arranged between the end of the oil cylinder and the inner wall of the fixed cylinder, a locking mechanism for limiting the sliding of the oil cylinder is arranged between the end of the oil cylinder and the fixed cylinder, the locking state of the locking mechanism at the end of the oil cylinder is different from the telescopic state of the telescopic mechanism, and also comprises a drill rod, one end of the drill rod is connected to the piston in the oil cylinder, and the other end passes through the connecting frame while passing through the oil cylinder.

[0007] By adopting the above technical solution, the fixed cylinder is fixedly connected to the connecting frame, and the oil cylinder is slidably connected in the fixed cylinder. The telescopic column is used to control the rapid extension and retraction of the oil cylinder as a whole, so that the head of the steel drill can contact the pile head faster. At the same time, after the crushing is completed, the steel drill can quickly release the crushed pile head, which is convenient for crushing the next section of the pile head, effectively improving the crushing efficiency of the pile head.

[0008] The present invention is further configured such that a slide rail is provided on the side wall of the fixed cylinder along the axial direction, a first interface and a second interface are provided at both ends of the oil cylinder respectively, and the slide rail is used for sliding of the first interface and the second interface.

[0009] Preferably, the hydraulic station can maintain normal hydraulic oil delivery to each cylinder even after the cylinder slides.

[0010] The present invention is further configured such that a telescopic column is installed in the fixed cylinder, a telescopic end of the telescopic column is fixedly connected to a movable plate, and the movable plate is installed at the end of the oil cylinder.

[0011] Preferably, the movement of the movable plate is controlled by a telescopic column, and the locking mechanism can be released after the movable plate moves, thereby further pushing or pulling the oil cylinder.

[0012] The present invention is further configured such that the end of the oil cylinder is fixedly connected to a fixed plate, the center of the fixed plate is provided with a through hole for the telescopic column to pass through, the telescopic end of the telescopic column is fixedly connected to the movable plate after passing through the through hole, the edge of the movable plate is rotatably connected to a connecting rod at an annular interval, the end of the connecting rod is rotatably connected to a plug column that can be radially telescoped along the cross section of the oil cylinder, the plug column penetrates the side wall of the oil cylinder, and the outer wall of the fixed tube is provided with holes for the plug column to be inserted at axial intervals, the corresponding connecting rod and the plug column The rotating axes are parallel to each other and are both orthogonal to the radius of the cross section of the oil cylinder.

[0013] Preferably, after the movable plate moves, the plurality of plug posts are retracted and disengaged from the insertion holes, thereby contacting the mutual limit between the oil cylinder and the fixed tube, and the movable plate is reset to restore the mutual limit between the oil cylinder and the fixed tube.

[0014] The present invention is further configured such that springs are provided at both ends of the movable plate, the springs at both ends of the movable plate contact the fixed plate and the oil cylinder respectively, and when the connecting rods at the edge of the movable plate are in the same plane, the springs at both ends of the movable plate apply the same elastic force to the movable plate.

[0015] Preferably, a spring assists in resetting the moving plate.

[0016] The present invention is further configured such that when the telescopic mechanism between the end of the oil cylinder and the inner wall of the fixed tube is in a retracted state and the portion of the drill rod in the oil cylinder is also in a retracted state, the end of the drill rod away from the telescopic mechanism is flush with the hole of the connecting frame for passing the drill rod through.

[0017] As a preferred embodiment, the pile breaker can be smoothly put on the pile head.

[0018] The present invention is further configured such that the connection frame is fixedly connected with a scraper ring at a position where the connection frame passes through the drill rod, and the inner wall of the scraper ring is in close contact with the outer wall of the drill rod.

[0019] Preferably, a scraper ring is used to clean the outer wall of the drill rod.

[0020] The present invention is further configured such that the diameters of the first interface and the second interface are equal to the width of the slide rail, and the oil cylinder and the fixed cylinder cannot rotate relative to each other.

[0021] Preferably, misalignment between the socket and the post is avoided.

[0022] The present invention is further configured such that a lifting lug is fixedly connected to the top surface of the connecting frame.

[0023] Preferably, the pile breaker can be easily moved and controlled by using the lifting lugs in conjunction with the lifting equipment.

[0024] A fully automatic hydraulic pile breaker comprises a plurality of connecting frames, wherein the connecting frames are connected end to end to form a ring structure, and the lifting ears connected to the connecting frames face the same direction.

[0025] Preferably, a suitable number of connecting frames are selected according to the diameter of the pile head and connected to each other to form a ring-shaped pile breaker.

[0026] In summary, the present invention mainly has the following beneficial effects:

[0027] 1. The present invention fixes a fixed tube on a connecting frame, and slidingly connects the oil cylinder in the fixed tube, and uses a telescopic column to control the rapid extension and retraction of the oil cylinder as a whole, so that the head of the steel drill can contact the pile head faster, and at the same time, the steel drill quickly releases the crushed pile head after the crushing is completed, which is convenient for crushing the next section of the pile head, and effectively improves the crushing efficiency of the pile head.

[0028] 2. The present invention provides a locking structure capable of cooperating with the fixed cylinder at one end of the oil cylinder away from the drill rod, and releases the lock during the extension and retraction of the telescopic column. Otherwise, the oil cylinder and the fixed cylinder are kept relatively still, effectively preventing the reaction force of the steel drill from causing the oil cylinder to move in the fixed cylinder, thereby avoiding damage to the telescopic column in the fixed cylinder.

[0029] 3. The present invention controls the movement of the oil cylinder through the telescopic column, so that the displacement process of the steel drill before contacting the pile head is pushed by the telescopic column. While maintaining the same movement stroke of the steel drill as in the prior art, the size of the oil chamber is effectively reduced, thereby reducing the overall weight and use cost of the pile breaker.

[0030] 4. The present invention arranges a scraper ring at the extension position of the drill rod of the connecting frame, and utilizes the inner wall of the scraper ring to slide relative to the outer wall of the drill rod during the extension and retraction process of the drill rod, so as to clean the outer wall of the drill rod, effectively preventing dust adhered to the drill rod after penetrating the pile head from entering the oil cylinder or the connecting frame, and can effectively reduce the cleaning frequency of the pile breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional diagram of the combined state of the crushing mechanism of the present invention;

[0032] Figure 2 For the present invention Figure 1 A magnified view of middle;

[0033] Figure 3 This is a three-dimensional diagram of the crushing mechanism assembly state from another viewing angle of the present invention;

[0034] Figure 4 It is a three-dimensional diagram of the crushing mechanism of the present invention;

[0035] Figure 5 It is a three-dimensional diagram of the fixing tube of the present invention;

[0036] Figure 6 A three-dimensional diagram of the connecting frame of the present invention;

[0037] Figure 7 It is a three-dimensional diagram of the oil cylinder of the present invention;

[0038] Figure 8 It is a three-dimensional diagram of the internal structure of the fixing cylinder of the present invention;

[0039] Fig. 9 It is a three-dimensional diagram of the internal structure of the fixing tube and the oil cylinder of the present invention;

[0040] Fig.10 For the present invention Fig. 9 Enlarged view of B.

[0041] Description of reference numerals:

[0042] 1. Connecting frame; 101. Lifting ear; 2. Fixing cylinder; 201. Slide rail; 202. Socket; 3. Oil cylinder; 301. First interface; 302. Second interface; 4. Drill rod; 5. Telescopic column; 6. Moving plate; 7. Connecting rod; 8. Plug column; 9. Fixing plate; 901. Perforation; 10. Scraper ring. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0044] The following describes an embodiment of the present invention based on its overall structure.

[0045] First embodiment:

[0046] A fully automatic hydraulic pile breaker with a straight cylinder hydraulic crushing mechanism. Figure 1-10, including a connecting frame 1. Specifically, the connecting frame 1 is a mature connecting structure in the prior art. Connecting structures for end-to-end connection are respectively arranged on both sides of the connecting frame 1. The combined connection of adjacent connecting frames 1 can be achieved by vertically penetrating bolts. The connecting frame 1 is fixedly connected to a fixed cylinder 2, and an oil cylinder 3 is slidably connected inside the fixed cylinder 2. Specifically, the outer diameter of the oil cylinder 3 is the same as the inner diameter of the fixed cylinder 2, which can prevent the oil cylinder 3 from shaking uncontrollably in the fixed cylinder 2. A telescopic mechanism is arranged between the end of the oil cylinder 3 and the inner wall of the fixed cylinder 2. Specifically, the telescopic mechanism can be an electric telescopic column, a hydraulic telescopic column, a pneumatic telescopic column, etc. In this embodiment, an electric telescopic column is specifically adopted.

[0047] Furthermore, a locking mechanism for limiting the sliding of the oil cylinder 3 is provided between the end of the oil cylinder 3 and the fixed cylinder 2. Specifically, the locking mechanism can adopt an electromagnetic latch structure. When the electric telescopic column is powered on, the electromagnet is energized to retract the latch, thereby releasing the mutual limitation between the oil cylinder 3 and the fixed cylinder 2. Conversely, when the electric telescopic column is powered off, the latch is extended by the elastic force of the spring to achieve the limitation between the oil cylinder 3 and the fixed cylinder 2. The specific structure of the electromagnetic latch can be easily obtained by those skilled in the art, and will not be elaborated on. The locking state of the locking mechanism at the end of the oil cylinder 3 is different from the telescopic state of the telescopic mechanism.

[0048] It also includes a drill rod 4, one end of which is connected to the piston in the oil cylinder 3, and the other end passes through the oil cylinder 3 and the connecting frame 1 at the same time. The part of the drill rod 4 passing through the connecting frame 1 is used to squeeze the pile head, and the movement of the piston is achieved by exchanging the hydraulic oil on both sides of the piston in the oil cylinder 3, thereby achieving the extension and retraction of the drill rod 4.

[0049] In the above embodiments, please refer to Figure 4-8 The side wall of the fixed cylinder 2 is provided with a slide rail 201 along the axial direction, and the first interface 301 and the second interface 302 are respectively provided at both ends of the oil cylinder 3. Specifically, the first interface 301 and the second interface 302 are respectively used as the oil outlet and the oil inlet of the hydraulic oil. When multiple connecting frames 1 are combined with each other, adjacent first interfaces 301 can be connected to each other, and at least one first interface 301 and the second interface 302 are four-way interfaces. The extra interface is used to connect the oil pump of the hydraulic station. The slide rail 201 is used for the first interface 301 and the second interface 302 to slide, and the hydraulic station can also maintain the normal hydraulic oil delivery to each oil cylinder 3 after the oil cylinder 3 slides.

[0050] Furthermore, the diameters of the first interface 301 and the second interface 302 are equal to the width of the slide rail 201, and the oil cylinder 3 and the fixed tube 2 cannot rotate relative to each other, which can effectively avoid the misalignment of the socket 202 and the column 8. The top surface of the connecting frame 1 is fixedly connected with a lifting ear 101, and the lifting ear 101 can be used in conjunction with the lifting equipment to easily move and control the pile breaker.

[0051] In the above embodiments, please refer to Figure 4-10 A telescopic column 5 is installed in the fixed cylinder 2. In other undisclosed embodiments, the telescopic column 5 can also adopt a hydraulic telescopic column. In the solution using the hydraulic telescopic column, the cross-sectional area of ​​the hydraulic telescopic column is much smaller than the cross-sectional area of ​​the cylinder 3, so rapid telescopic extension can also be achieved.

[0052] Specifically, the telescopic end of the telescopic column 5 is fixedly connected with a movable plate 6, and the movable plate 6 is installed at the end of the oil cylinder 3. The movement of the movable plate 6 is controlled by the telescopic column 5. After the movable plate 6 moves, the locking mechanism can be released, thereby further pushing or pulling the oil cylinder 3.

[0053] A fully automatic hydraulic pile breaker, see Figure 1-3 , comprising a plurality of connecting frames 1, wherein the plurality of connecting frames 1 are connected end to end to form an annular structure, and the lifting ears 101 connected to the connecting frames 1 face the same direction, and a suitable number of connecting frames 1 are selected according to the diameter of the pile head to be connected to each other to form an annular pile breaker.

[0054] Second embodiment:

[0055] A fully automatic hydraulic pile breaker with a straight cylinder hydraulic crushing mechanism. Figure 1-10 The end of the oil cylinder 3 is fixedly connected to a fixed plate 9, and a through hole 901 for the telescopic column 5 to pass through is set in the center of the fixed plate 9. Specifically, the diameter of the through hole 901 is larger than the diameter of the telescopic column 5. The telescopic end of the telescopic column 5 passes through the through hole 901 and is fixedly connected to the movable plate 6. The edge of the movable plate 6 is rotatably connected to a connecting rod 7 at an annular interval. The end of the connecting rod 7 is rotatably connected to a plug column 8 that can be radially telescoped along the cross-section of the oil cylinder 3. The plug column 8 penetrates the side wall of the oil cylinder 3.

[0056] Specifically, in order to prevent the cooperation between the pin 8 and the socket 202 from interfering with the normal sliding of the first interface 301 and the second interface 302 in the slide rail 201, the pin 8 and the socket 202 are not set along the length direction of the slide rail 201. In the present embodiment, the pins 8 are arranged at intervals of sixty degrees along the circumferential direction, but since the top pin 8 is not set, the two top pins 8 are actually spaced one hundred and twenty degrees apart.

[0057] Furthermore, the outer wall of the fixed cylinder 2 is provided with insertion holes 202 for inserting the plug posts 8 at axial intervals, and the corresponding connecting rods 7 and the rotating axes of the plug posts 8 are parallel to each other and are orthogonal to the radius of the cross section of the cylinder 3. After the movable plate 6 moves, the multiple plug posts 8 are retracted and disengaged from the insertion holes 202, and then contact the mutual limitation between the cylinder 3 and the fixed cylinder 2. The mutual limitation between the cylinder 3 and the fixed cylinder 2 is restored when the movable plate 6 is reset.

[0058] In the above embodiments, please refer to Figure 4-10, springs are provided at both ends of the movable plate 6, and the springs at both ends of the movable plate 6 contact the fixed plate 9 and the cylinder 3 respectively. When the connecting rod 7 at the edge of the movable plate 6 is in the same plane, the springs at both ends of the movable plate 6 apply the same elastic force to the movable plate 6, and the spring helps to reset the movable plate 6, so that the connecting rod 7 at the edge of the movable plate 6 remains in the same plane.

[0059] Specifically, a plurality of sockets 202 are arranged at intervals along the length direction of the fixed tube 2, and the interval length between the starting socket 202 and the ending socket 202 is greater than the stroke of the telescopic column 5. Furthermore, if the column 8 is not aligned with the socket 202 when the telescopic column 5 stops moving, the elastic force of the springs on both sides of the movable plate 6 keeps the column 8 extending in a direction away from the center of the movable plate 6. After the drill rod 4 releases the pile head and causes the cylinder 3 to move slightly, the column 8 can be inserted into the socket 202 at the moment it is aligned with the adjacent socket 202.

[0060] In the above embodiments, please refer to Figure 1-10 When the telescopic mechanism between the end of the oil cylinder 3 and the inner wall of the fixed tube 2 is in a retracted state, and the part of the drill rod 4 in the oil cylinder 3 is also in a retracted state, the end of the drill rod 4 away from the telescopic mechanism is flush with the hole of the connecting frame 1 for passing the drill rod 4. The diameter of the circle formed by the ends of the multiple drill rods 4 needs to be larger than the diameter of the pile head, so that the pile breaker can be smoothly sleeved on the pile head. When crushing pile heads of different diameters, a corresponding number of connecting frames 1 are combined according to the size of the pile head with the largest diameter. Since the telescopic column 5 can make the oil cylinder 3 slide and then extend the drill rod 4 quickly, some small-diameter pile heads can also be crushed at a similar speed, which saves the time for disassembling and replacing the connecting frame 1, and further improves the efficiency of crushing pile heads.

[0061] The third embodiment:

[0062] A fully automatic hydraulic pile breaker with a straight cylinder hydraulic crushing mechanism. Figure 1-10 A scraper ring 10 is fixedly connected to the connecting frame 1 at the position where the drill rod 4 is passed through. The inner wall of the scraper ring 10 is in close contact with the outer wall of the drill rod 4. The inner wall of the scraper ring 10 slides relative to the outer wall of the drill rod 4 during the extension and retraction of the drill rod 4, thereby cleaning the outer wall of the drill rod 4, effectively preventing dust adhered to the drill rod 4 after penetrating the pile head from entering the oil cylinder 3 or the connecting frame 1, and can effectively reduce the cleaning frequency of the pile breaker.

[0063] When the straight cylinder type hydraulic crushing mechanism is working, the telescopic column 5 is extended to push the movable plate 6 toward the oil cylinder 3, and the multiple connecting rods 7 on the edge of the movable plate 6 rotate synchronously, so that the plug column 8 is disengaged from the insertion hole 202. After the movable plate 6 subsequently contacts the oil cylinder 3, the thrust of the telescopic column 5 during extension acts on the oil cylinder 3, causing the oil cylinder to slide relative to the fixed cylinder 2. At this time, the drill rod 4 can be extended relatively quickly to contact the pile head, and then the telescopic column 5 stops extending. Under the elastic force of the springs at both ends of the movable plate 6, the movable plate 6 is quickly reset, and the plug column 8 is restored to be inserted into the insertion hole 202 on the side close to the oil cylinder 3, thereby restoring the limit position of the oil cylinder 3. The hydraulic oil on both sides of the piston in the oil cylinder 3 exchanges and flows, so as to achieve the slow extension of the drill rod 4, and then the pile head is squeezed and crushed;

[0064] After the pile head is squeezed and crushed and a section of the pile head is cut off, the lifting equipment lifts the annular crusher and transports it to the position where the pile head section is discarded. The telescopic column 5 contracts, and the movable plate 6 moves toward the fixed plate 9. The plug column 8 also contracts and disengages from the socket 202 until the movable plate 6 contacts the fixed plate 9. The cylinder 3 can be quickly pulled back, and the drill rod 4 in the cylinder 3 contracts synchronously, so that the drill rod 4 can be retrieved faster than the prior art, causing the pile head above the drill rod 4 to fall, and the next pile head can be crushed quickly, effectively improving the crushing efficiency of the pile head.

[0065] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A straight cylinder hydraulic crushing mechanism of a fully automatic hydraulic pile breaker, characterized in that: include: A connecting frame (1), the connecting frame (1) being fixedly connected to a fixed cylinder (2), an oil cylinder (3) being slidably connected inside the fixed cylinder (2), a telescopic mechanism being arranged between the end of the oil cylinder (3) and the inner wall of the fixed cylinder (2), a locking mechanism being arranged between the end of the oil cylinder (3) and the fixed cylinder (2) for limiting the sliding of the oil cylinder (3), and a locking state of the locking mechanism at the end of the oil cylinder (3) being different from a telescopic state of the telescopic mechanism; A drill rod (4), one end of which is connected to a piston in an oil cylinder (3), and the other end of which passes through the oil cylinder (3) and the connecting frame (1) at the same time.

2. The straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to claim 1 is characterized in that: A slide rail (201) is provided on the side wall of the fixed cylinder (2) along the axial direction, and a first interface (301) and a second interface (302) are provided at both ends of the oil cylinder (3), respectively. The slide rail (201) is used for the first interface (301) and the second interface (302) to slide.

3. The straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to claim 2 is characterized in that: A telescopic column (5) is installed in the fixed cylinder (2), and a movable plate (6) is fixedly connected to the telescopic end of the telescopic column (5), and the movable plate (6) is installed at the end of the oil cylinder (3).

4. The straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to claim 3 is characterized in that: The end of the oil cylinder (3) is fixedly connected to a fixed plate (9), and a through hole (901) for the telescopic column (5) to pass through is provided at the center of the fixed plate (9). The telescopic end of the telescopic column (5) passes through the through hole (901) and is fixedly connected to the movable plate (6). The edge of the movable plate (6) is rotatably connected to a connecting rod (7) at an annular interval. The end of the connecting rod (7) is rotatably connected to a plug column (8) that can be radially telescoped along the cross section of the oil cylinder (3). The plug column (8) penetrates the side wall of the oil cylinder (3). The outer wall of the fixed tube (2) is provided with insertion holes (202) for the plug column (8) to be inserted along the axial interval. The corresponding rotating axes of the connecting rod (7) and the plug column (8) are parallel to each other and are both orthogonal to the radius of the cross section of the oil cylinder (3).

5. The straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to claim 4 is characterized in that: Springs are provided at both ends of the movable plate (6), and the springs at both ends of the movable plate (6) contact the fixed plate (9) and the oil cylinder (3) respectively. When the connecting rods (7) at the edges of the movable plate (6) are in the same plane, the springs at both ends of the movable plate (6) exert the same elastic force on the movable plate (6).

6. The straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to claim 1 is characterized in that: When the telescopic mechanism between the end of the oil cylinder (3) and the inner wall of the fixed cylinder (2) is in a retracted state, and the portion of the drill rod (4) in the oil cylinder (3) is also in a retracted state, the end of the drill rod (4) away from the telescopic mechanism is flush with the hole of the connecting frame (1) for passing the drill rod (4).

7. The straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to claim 6 is characterized in that: The connection frame (1) is fixedly connected with a scraper ring (10) at a position where the drill rod (4) passes through, and the inner wall of the scraper ring (10) is in close contact with the outer wall of the drill rod (4).

8. The straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to claim 2 is characterized in that: The diameters of the first interface (301) and the second interface (302) are equal to the width of the slide rail (201), and the oil cylinder (3) and the fixed cylinder (2) cannot rotate relative to each other.

9. The straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to claim 1 is characterized in that: A lifting lug (101) is fixedly connected to the top surface of the connecting frame (1).

10. A fully automatic hydraulic pile breaker, using the straight cylinder type hydraulic crushing mechanism of the fully automatic hydraulic pile breaker according to any one of claims 1 to 9, characterized in that: A plurality of the connecting frames (1) are connected end to end to form a ring structure, and the lifting ears (101) connected to the connecting frames (1) face the same direction.

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