Hydraulic control device and control system of hydraulic pile hammer

Abstract

The invention discloses a hydraulic control device and system for a hydraulic pile hammer, and relates to the field of pile hammer control, the hydraulic control device comprises a valve body and a first hydraulic cylinder mounted at the lower end of the valve body, a second hydraulic cylinder is arranged at the lower end of the first hydraulic cylinder, and piston rods are arranged in the first hydraulic cylinder and the second hydraulic cylinder; fixing plates are arranged on the left side and the right side of the valve body. When the hydraulic control device and control system of the hydraulic pile hammer are used, hydraulic pressure is controlled through a valve in a valve body, so that piston rods in a first hydraulic cylinder and a second hydraulic cylinder can control the pile hammer at the bottom to pile, a cover plate sealed by a sealing strip is opened, and a proper amount of hydraulic oil is added into an oil storage bin; and after entering the oil storage bin and being filtered by the screen plate, hydraulic oil is pumped and fed into the valve body through the oil hydraulic pump at the middle end of the flow guide pipe, so that the fed hydraulic oil can be filtered, the valve body is prevented from being damaged by impurities, and the device is protected.

Description

Technical Field

[0001] The invention relates to the technical field of pile hammer control, in particular to a hydraulic control device and a control system of a hydraulic pile hammer. Background Art

[0002] The hydraulic control device of the hydraulic pile hammer is a system used to control and adjust the working state of the hydraulic pile hammer. It mainly relies on the pressure and flow of hydraulic oil to realize the piling action, so that the hydraulic pile hammer can perform piling operations efficiently and stably during the construction process.

[0003] In the prior art, it is rather complicated for the workers to operate the device to control the hydraulic driven pile hammer, which is not conducive to the simple and convenient use by the workers.

[0004] In order to overcome the above-mentioned shortcomings, a Chinese patent of the prior art (publication number CN222229025U) discloses an improved hydraulic driving device of a hydraulic pile hammer, wherein a first hydraulic cylinder is installed at the bottom of the valve body, a second hydraulic cylinder is installed at the bottom of the first hydraulic cylinder, piston rods are arranged inside the first hydraulic cylinder and the second hydraulic cylinder, and a quick disassembly structure is arranged on the valve body. Through the arrangement of the quick disassembly structure, the valve body and the first hydraulic cylinder can be quickly disassembled. Since the fixing frame and the sleeve in the quick disassembly structure are provided with interconnected threads, when the valve body and the first hydraulic cylinder are disassembled, the sleeve is directly rotated to drive the first hydraulic cylinder to rotate as a whole to separate the sleeve and the fixing frame, thereby quickly disassembling and separating the valve body and the first hydraulic cylinder, reducing the disassembly time, and at the same time, after the valve body and the first hydraulic cylinder are disassembled, damage to the sealing ring of the piston head and the like can be avoided, so that the valve body and the first hydraulic cylinder can be recycled.

[0005] In order to overcome the above-mentioned shortcomings, a Chinese patent of the prior art (Announcement No. CN111577703A) discloses a hydraulic drive device of a hydraulic pile hammer, comprising a hydraulic cylinder body, a cylinder cover and a valve body are respectively provided at the axial ends of the hydraulic cylinder body, a piston and a piston rod are provided in the hydraulic cylinder body, an oil inlet is opened on the hydraulic cylinder body, a piston cylinder is sleeved in the hydraulic cylinder body, the piston and the piston rod are located in the piston cylinder, a space between the hydraulic cylinder body and the piston cylinder is a hydraulic oil return space, a lifting chamber and a driving chamber are provided in the piston cylinder, the oil inlet is communicated with the hydraulic oil return space, a lifting chamber oil inlet channel is provided at the lifting chamber, a channel for promoting the communication between the hydraulic oil return space and the driving chamber and a reflux channel for promoting the hydraulic oil in the driving chamber to flow back to the external oil tank is provided on the valve body, and a hydraulic drive device of a hydraulic pile hammer is provided which is easy to maintain, increases the flow area of ​​the hydraulic oil, has stable sealing and is leak-proof.

[0006] Although the existing technology can overcome the above-mentioned deficiencies, there are still other problems in its operation, such as: when filling oil, impurities are likely to exist inside the hydraulic oil, and the impurities are likely to cause the hydraulic control device to be blocked and unusable, which is not conducive to the use of staff, and the unblocking is relatively cumbersome. Summary of the invention

[0007] The purpose of the present invention is to provide a hydraulic control device and control system for a hydraulic pile hammer, so as to solve the problem mentioned in the above background technology that impurities are likely to exist inside the hydraulic oil during oil injection, and the impurities are likely to cause blockage inside the hydraulic control device and make it unusable, which is not conducive to the use of the staff and is relatively cumbersome to clear.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic control device of a hydraulic pile hammer, comprising a valve body and a first hydraulic cylinder installed at the lower end of the valve body, and a second hydraulic cylinder is arranged at the lower end of the first hydraulic cylinder, and piston rods are arranged inside the first hydraulic cylinder and the second hydraulic cylinder; fixed plates are arranged on the left and right sides of the valve body, and a hydraulic oil filtering mechanism is arranged at the upper end of the fixed plate, and the hydraulic oil filtering mechanism includes an oil storage tank, and the lower end of the oil storage tank is installed on the upper end of the fixed plate; a cross plate is arranged on the outer side of the second hydraulic cylinder, and a self-draining mechanism is arranged on the outer side of the cross plate, and the self-draining mechanism includes a gear rod, and the gear rod is arranged at the upper end of the cross plate; an isolation tank is arranged on the outer side of the second hydraulic cylinder, and an anti-damage mechanism is arranged inside the isolation tank, and the anti-damage mechanism includes an elastic airbag, and the inner side of the elastic airbag is installed inside the isolation tank.

[0009] Furthermore, the first hydraulic cylinder is communicated with the second hydraulic cylinder, and the surfaces of the first hydraulic cylinder and the second hydraulic cylinder are connected via a reinforcing fixing member.

[0010] Furthermore, the hydraulic oil filtering mechanism also includes a cover plate, and the lower end of the cover plate is sleeved on the upper end of the oil storage bin, and a sealing strip is installed on the inner side of the bottom of the cover plate, and the inner side of the sealing strip fits the surface of the oil storage bin.

[0011] Furthermore, a slide groove is opened inside the oil storage bin, and a screen plate is arranged inside the oil storage bin, and a slider is fixedly installed on the outer side of the screen plate, and the outer side of the slider is slidably connected to the slide groove, and a pull plate is fixedly installed on the upper end of the screen plate.

[0012] Furthermore, the inner side of the oil storage tank is connected with a flow guide pipe, and the inner side of the flow guide pipe is connected with the inside of the valve body, and a hydraulic pump is arranged at the middle end of the flow guide pipe, and the lower end of the hydraulic pump is fixedly mounted on the upper end of the valve body.

[0013] Furthermore, the self-draining mechanism also includes a fixed plate, and the fixed plate is fixedly installed on the middle end of the piston rod, and a tooth plate is fixedly installed on the upper end of the fixed plate, and the upper end of the tooth plate passes through the cross plate, the outer side of the tooth plate is meshed with the gear rod, and the front and rear ends of the gear rod are rotatably installed on the upper end of the cross plate, and the rear end of the gear rod is provided with a transmission belt through a pulley sleeve, and the upper end of the transmission belt is provided with a disc rod through the pulley sleeve.

[0014] Furthermore, the disc rod is rotatably installed on the outside of the valve body, and a column is fixedly installed on the surface of the disc rod, and a movable push rod is sleeved on the surface of the column, and a limiting sleeve is installed through the middle end of the movable push rod, and the upper end of the limiting sleeve is fixedly installed on the lower end of the fixed plate, a guide rod is fixedly installed on the lower end of the oil storage bin, and a knocking plate is installed through the surface of the guide rod, and an inclined block is fixedly installed on the lower end of the knocking plate, and the inclined block corresponds to the movable push rod, a vibration spring is sleeved on the surface of the guide rod, and the upper and lower ends of the vibration spring are arranged between the oil storage bin and the knocking plate, and the upper end of the knocking plate corresponds to the bottom of the oil storage bin.

[0015] Furthermore, the anti-damage mechanism also includes a pressing block, and limit blocks are fixedly installed at the upper and lower ends of the pressing block, and the pressing block is slidably connected to the inner wall of the isolation chamber through the limit blocks.

[0016] Furthermore, a cam block is provided on the outer side of the gear rod, and the cam block corresponds to the pressure block, and the pressure block and the elastic airbag form a pressed structure, an air guide tube is installed through the lower end of the elastic airbag, and the lower end of the air guide tube is connected to the jet port, and the inner side of the jet port is fixedly installed on the outer side of the second hydraulic cylinder, and the air outlet of the jet port is aligned with the connection between the second hydraulic cylinder and the piston rod, a one-way air inlet is installed through the upper end of the elastic airbag, and a one-way valve is provided inside the one-way air inlet.

[0017] Furthermore, the hydraulic control device of the hydraulic pile hammer is characterized in that: a control system of the hydraulic control device is also disclosed, which specifically includes the following modules:

[0018] Hydraulic control module: used to control the hydraulic pile hammer, through the system control valve body internal hydraulic oil communication, so that the valve body through the hydraulic control of the first hydraulic cylinder and the second hydraulic cylinder internal piston rod;

[0019] Hydraulic oil filter module: It is connected to the inside of the valve body through the guide pipe and is connected to the hydraulic control module through a signal. It is used to filter the added hydraulic oil. The added hydraulic oil is filtered through the screen plate inside the oil storage tank. The filtered hydraulic oil is pumped into the valve body for use by the hydraulic pump.

[0020] Anti-blocking module: When the hydraulic control module controls the pile hammer to drive the pile, the anti-blocking module knocks on the inside of the oil storage tank to avoid blockage of the hydraulic oil delivery;

[0021] Anti-damage module: As the anti-blocking module works, air is automatically blown to the connection position between the second hydraulic cylinder and the piston rod to prevent impurities from causing damage to the connection position.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. When in use, the hydraulic pressure is controlled through the valve inside the valve body, so that the piston rods inside the first hydraulic cylinder and the second hydraulic cylinder can control the pile hammer at the bottom to pile, open the cover plate sealed by the sealing strip, add a proper amount of hydraulic oil to the oil storage tank, the hydraulic oil enters the oil storage tank and is filtered by the screen plate, and then is extracted by the hydraulic pump at the middle end of the guide pipe and sent to the valve body, so that the hydraulic oil sent in can be filtered to prevent impurities from damaging the valve body and protect the device;

[0024] Furthermore, after the screen plate has been used for a long time, the screen plate can be slid out along the slide groove through the slider by pulling the pull plate, which makes it easy for the staff to clean the screen plate, and the operation is simple and convenient.

[0025] 2. When the hydraulic pile hammer is lifted and lowered for piling, the piston rod moves up and down, and the fixed plate moves up and down with the piston rod. The toothed plate on the fixed plate passes through the horizontal plate to drive the gear rod meshing with it, and the gear rod is driven to rotate back and forth. At this time, the movable push rod reciprocates and aligns with the inclined block at the lower end of the knocking plate. Due to its own inclination, the inclined block pushes the knocking plate along the guide rod to squeeze the vibration spring and knock the oil storage tank when pushed by the movable push rod, avoiding internal blockage, improving the use efficiency of the device, and avoiding internal blockage and inability to use the device;

[0026] 3. When the gear rod rotates, the cam block on the outside of the gear rod rotates along with the rotation of the gear rod. The rotation of the cam block squeezes the pressure block inside the isolation chamber. The pressure block is squeezed through the limit block to slide along the inside of the isolation chamber, and when the pressure block moves, it squeezes the elastic airbag. The elastic airbag is squeezed to transport the internal air to the jet port through the air guide pipe. The jet port is aimed at the connection position between the second hydraulic cylinder and the piston rod for blowing. As the device is used, it can automatically blow and remove impurities to prevent impurities from entering the second hydraulic cylinder and causing damage to the device, thereby increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0028] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the present invention.

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention when viewed from above.

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the oil storage tank in front view of the present invention.

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the oil storage tank in a side section according to the present invention.

[0032] Figure 6 It is a bottom-up three-dimensional structural schematic diagram of the tooth plate of the present invention.

[0033] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the knocking board of the present invention from a side view.

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the isolation chamber of the present invention in a front view.

[0036] Fig.10 It is a schematic diagram of the three-dimensional structure of the elastic airbag of the present invention.

[0037] Fig.11 It is a schematic diagram of the system flow of the present invention.

[0038] In the figure: 1. valve body; 2. first hydraulic cylinder; 3. second hydraulic cylinder; 4. piston rod; 5. reinforcing fixings; 6. fixing plate; 7. oil storage bin; 8. cover plate; 9. sealing strip; 10. screen plate; 11. slider; 12. slideway; 13. pull plate; 14. guide pipe; 15. hydraulic pump; 16. fixing plate; 17. tooth plate; 18. cross plate; 19. gear rod; 20. transmission belt; 21. disc rod; 22. column; 23. movable push rod; 24. limit sleeve; 25. guide rod; 26. knocking plate; 27. inclined block; 28. vibration spring; 29. ​​cam block; 30. isolation chamber; 31. elastic air bag; 32. pressure block; 33. limit block; 34. air guide pipe; 35. jet nozzle; 36. one-way air inlet. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1: Figure 1-Figure 5 and Fig.11The technical scheme shown is a hydraulic control device and control system for a hydraulic pile hammer. In order to solve the problem that impurities in the hydraulic oil easily cause damage to the device, the following are disclosed: a valve body 1 and a first hydraulic cylinder 2 installed at the lower end of the valve body 1, and a second hydraulic cylinder 3 is arranged at the lower end of the first hydraulic cylinder 2, and piston rods 4 are arranged inside the first hydraulic cylinder 2 and the second hydraulic cylinder 3, fixed plates 6 are arranged on the left and right sides of the valve body 1, and a hydraulic oil filtering mechanism is arranged on the upper end of the fixed plate 6, and the hydraulic oil filtering mechanism includes an oil storage bin 7, and the lower end of the oil storage bin 7 is installed on the upper end of the fixed plate 6, the first hydraulic cylinder 2 is connected to the second hydraulic cylinder 3, and the surfaces of the first hydraulic cylinder 2 and the second hydraulic cylinder 3 are connected by a reinforcing fixing member 5, the hydraulic oil filtering mechanism also includes a cover plate 8, and the lower end of the cover plate 8 is sleeved on the upper end of the oil storage bin 7, and a sealing strip 9 is installed on the inner side of the bottom of the cover plate 8, and the inner side of the sealing strip 9 fits the surface of the oil storage bin 7, and a slide groove 12 is opened inside the oil storage bin 7 , and a screen plate 10 is arranged inside the oil storage tank 7, and a slider 11 is fixedly installed on the outside of the screen plate 10, and the outside of the slider 11 is slidably connected to the slide groove 12, and a pull plate 13 is fixedly installed on the upper end of the screen plate 10, and a guide pipe 14 is connected to the inside of the oil storage tank 7, and the inner side of the guide pipe 14 is connected to the inside of the valve body 1, and a hydraulic pump 15 is arranged at the middle end of the guide pipe 14, and the lower end of the hydraulic pump 15 is fixedly installed on the upper end of the valve body 1, and the hydraulic control module is used for hydraulic The control of the pile hammer is achieved by controlling the hydraulic oil inside the valve body 1 through the system, so that the valve body 1 controls the piston rod 4 inside the first hydraulic cylinder 2 and the second hydraulic cylinder 3 through hydraulic pressure; the hydraulic oil filtering module: is connected to the inside of the valve body 1 through the guide pipe 14, and is connected to the hydraulic control module through a signal, and is used to filter the added hydraulic oil, and the added hydraulic oil is filtered through the screen plate 10 inside the oil storage tank 7, and the filtered hydraulic oil is pumped into the valve body 1 for use under the extraction of the hydraulic pump 15.

[0041] When in use, the hydraulic pressure is controlled by the valve inside the valve body 1, so that the piston rod 4 inside the first hydraulic cylinder 2 and the second hydraulic cylinder 3 can control the pile hammer at the bottom to perform piling. Before using the device, the first hydraulic cylinder 2 and the second hydraulic cylinder 3 are connected under the action of the reinforcing fixing member 5 to improve the overall structural strength and avoid easy damage. When in use, the cover plate 8 sealed by the sealing strip 9 is opened, and an appropriate amount of hydraulic oil is added to the oil storage tank 7. After the hydraulic oil enters the oil storage tank 7 and is filtered by the screen plate 10, it is extracted by the oil pressure pump 15 at the middle end of the guide pipe 14 and sent to the valve body 1, so as to filter the hydraulic oil sent in, avoid impurities from damaging the valve body 1, and protect the device. After the screen plate 10 has been used for a long time, the pull plate 13 is pulled so that the screen plate 10 can be slid out along the slide groove 12 through the slider 11, which is convenient for the staff to clean the screen plate 10, and the operation is simple and convenient.

[0042] Embodiment 2: Figure 1-Figure 8 and Fig.11 The technical solution shown is based on the first embodiment, and in order to solve the problem of easy accumulation and clogging of impurities, it is disclosed that: a transverse plate 18 is arranged on the outer side of the second hydraulic cylinder 3, and a self-dredging mechanism is arranged on the outer side of the transverse plate 18, and the self-dredging mechanism includes a gear rod 19, and the gear rod 19 is arranged at the upper end of the transverse plate 18, and the self-dredging mechanism also includes a fixed plate 16, and the fixed plate 16 is fixedly installed on the middle end of the piston rod 4, and a toothed plate 17 is fixedly installed on the upper end of the fixed plate 16, and the upper end of the toothed plate 17 passes through the transverse plate 18, the outer side of the toothed plate 17 is meshed with the gear rod 19, and the front and rear ends of the gear rod 19 are rotatably installed on the upper end of the transverse plate 18, and the rear end of the gear rod 19 is provided with a transmission belt 20 through a pulley sleeve, and the upper end of the transmission belt 20 is provided with a disc rod 21 through a pulley sleeve, and the disc rod 21 is rotatably installed on the valve body 1 The outer side of the disc rod 21 is fixedly installed with a column 22 on the surface of the disc rod 21, and a movable push rod 23 is sleeved on the surface of the column 22, and a limiting sleeve 24 is installed through the middle end of the movable push rod 23, and the upper end of the limiting sleeve 24 is fixedly installed on the lower end of the fixed plate 6, and a guide rod 25 is fixedly installed on the lower end of the oil storage bin 7, and a knocking plate 26 is installed through the surface of the guide rod 25, and an inclined block 27 is fixedly installed on the lower end of the knocking plate 26, and the inclined block 27 corresponds to the movable push rod 23, and a vibration spring 28 is sleeved on the surface of the guide rod 25, and the upper and lower ends of the vibration spring 28 are arranged between the oil storage bin 7 and the knocking plate 26, and the upper end of the knocking plate 26 corresponds to the bottom of the oil storage bin 7, anti-blocking module: when the hydraulic control module controls the pile hammer to perform piling, the inside of the oil storage bin 7 is knocked by the anti-blocking module to avoid blockage of the hydraulic oil delivery.

[0043] When the hydraulic pile hammer is lifted and lowered for piling, the piston rod 4 moves up and down. At this time, the fixed plate 16 moves up and down with the piston rod 4. The toothed plate 17 on the fixed plate 16 drives the gear rod 19 meshing therewith through the cross plate 18, and the gear rod 19 is driven to rotate reciprocatingly. The rotating gear rod 19 drives the disc rod 21 to rotate through the pulley and the transmission belt 20. When the disc rod 21 rotates, it drives the movable push rod 23 to reciprocate under the action of the limit sleeve 24 through the column 22. The movable push rod 23 reciprocates and aligns with the inclined block 27 at the lower end of the knocking plate 26. Due to its own inclination, the inclined block 27, when pushed by the movable push rod 23, pushes the knocking plate 26 along the guide rod 25 to squeeze the vibration spring 28, and knocks the oil storage tank 7 to avoid internal blockage, improve the use efficiency of the device, and avoid internal blockage and unusability of the device.

[0044] Embodiment 3: Figure 1-Figure 11The technical solution shown in the embodiment is based on the second embodiment. In order to solve the problem that the device is easily damaged when in use, the following is disclosed: an isolation chamber 30 is arranged on the outside of the second hydraulic cylinder 3, and an anti-damage mechanism is arranged inside the isolation chamber 30, and the anti-damage mechanism includes an elastic airbag 31, and the inner side of the elastic airbag 31 is installed inside the isolation chamber 30, and the anti-damage mechanism also includes a pressure block 32, and the upper and lower ends of the pressure block 32 are fixedly installed with limit blocks 33, and the pressure block 32 is slidably connected to the inner wall of the isolation chamber 30 through the limit blocks 33, and a cam block 29 is arranged on the outside of the gear rod 19, and the cam block 29 and the pressure block 32 are connected to the inner wall of the isolation chamber 30. Correspondingly, the pressure block 32 forms a pressed structure with the elastic airbag 31, an air guide tube 34 is installed through the lower end of the elastic airbag 31, and the lower end of the air guide tube 34 is connected to the jet port 35, and the inner side of the jet port 35 is fixedly installed on the outer side of the second hydraulic cylinder 3, and the air outlet of the jet port 35 is aligned with the connection between the second hydraulic cylinder 3 and the piston rod 4, a one-way air inlet 36 is installed through the upper end of the elastic airbag 31, and a one-way valve is arranged inside the one-way air inlet 36, anti-damage module: as the anti-blocking module works, the connection position between the second hydraulic cylinder 3 and the piston rod 4 is automatically blown to prevent impurities from causing damage to the connection position.

[0045] When the gear rod 19 rotates, the cam block 29 on the outside of the gear rod 19 rotates along with the rotation of the gear rod 19, and the cam block 29 rotates to squeeze the pressure block 32 inside the isolation chamber 30. The pressure block 32 is squeezed through the limit block 33 and slides along the inside of the isolation chamber 30. When the pressure block 32 moves, the elastic airbag 31 is squeezed, and the elastic airbag 31 is squeezed to deliver the internal air to the air jet 35 through the air guide pipe 34. The air jet 35 is aimed at the connection position between the second hydraulic cylinder 3 and the piston rod 4 for blowing. Conversely, when the pressure block 32 stops being squeezed, the elastic airbag 31 is reset by its own elastic force. When the elastic airbag 31 is reset, air is taken in through the one-way valve inside the one-way air inlet 36, so that the elastic airbag 31 can be re-inflated, which can be used repeatedly and can automatically blow and remove impurities as the device is used to prevent impurities from entering the second hydraulic cylinder 3 and causing damage to the device, thereby increasing the service life of the device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic control device for a hydraulic pile hammer, comprising a valve body (1) and a first hydraulic cylinder (2) mounted at the lower end of the valve body (1), a second hydraulic cylinder (3) being arranged at the lower end of the first hydraulic cylinder (2), and piston rods (4) being arranged inside the first hydraulic cylinder (2) and the second hydraulic cylinder (3); Features: The valve body (1) is provided with a fixed plate (6) on both sides thereof, and a hydraulic oil filtering mechanism is provided on the upper end of the fixed plate (6), and the hydraulic oil filtering mechanism includes an oil storage bin (7), and the lower end of the oil storage bin (7) is mounted on the upper end of the fixed plate (6); A transverse plate (18) is arranged on the outer side of the second hydraulic cylinder (3), and a self-dredging mechanism is arranged on the outer side of the transverse plate (18), and the self-dredging mechanism includes a gear rod (19), and the gear rod (19) is arranged on the upper end of the transverse plate (18); An isolation chamber (30) is arranged outside the second hydraulic cylinder (3), and an anti-damage mechanism is arranged inside the isolation chamber (30), and the anti-damage mechanism comprises an elastic airbag (31), and the inner side of the elastic airbag (31) is installed inside the isolation chamber (30).

2. A hydraulic control device for a hydraulic pile hammer according to claim 1, characterized in that: The first hydraulic cylinder (2) is communicated with the second hydraulic cylinder (3), and the surfaces of the first hydraulic cylinder (2) and the second hydraulic cylinder (3) are connected via a reinforcing fixing member (5).

3. The hydraulic control device for a hydraulic pile hammer according to claim 1, characterized in that: The hydraulic oil filtering mechanism also includes a cover plate (8), and the lower end of the cover plate (8) is sleeved on the upper end of the oil storage bin (7), and a sealing strip (9) is installed on the inner side of the bottom of the cover plate (8), and the inner side of the sealing strip (9) is in contact with the surface of the oil storage bin (7).

4. A hydraulic control device for a hydraulic pile hammer according to claim 3, characterized in that: A slide groove (12) is provided inside the oil storage bin (7), and a screen plate (10) is arranged inside the oil storage bin (7), and a slider (11) is fixedly installed on the outer side of the screen plate (10), and the outer side of the slider (11) is slidably connected to the slide groove (12), and a pull plate (13) is fixedly installed on the upper end of the screen plate (10).

5. The hydraulic control device for a hydraulic pile hammer according to claim 4, characterized in that: The inner side of the oil storage tank (7) is connected to a flow guide pipe (14), and the inner side of the flow guide pipe (14) is connected to the inside of the valve body (1). A hydraulic pump (15) is provided at the middle end of the flow guide pipe (14), and the lower end of the hydraulic pump (15) is fixedly mounted on the upper end of the valve body (1).

6. The hydraulic control device for a hydraulic pile hammer according to claim 1, characterized in that: The self-dredging mechanism also includes a fixed plate (16), and the fixed plate (16) is fixedly mounted on the middle end of the piston rod (4), and a toothed plate (17) is fixedly mounted on the upper end of the fixed plate (16), and the upper end of the toothed plate (17) is arranged to penetrate the transverse plate (18), the outer side of the toothed plate (17) is meshed with a gear rod (19), and the front and rear ends of the gear rod (19) are rotatably mounted on the upper end of the transverse plate (18), and the rear end of the gear rod (19) is provided with a transmission belt (20) through a pulley sleeve, and the upper end of the transmission belt (20) is provided with a disc rod (21) through the pulley sleeve.

7. A hydraulic control device for a hydraulic pile hammer according to claim 6, characterized in that: The disc rod (21) is rotatably mounted on the outer side of the valve body (1), and a column (22) is fixedly mounted on the surface of the disc rod (21), and a movable push rod (23) is sleeved on the surface of the column (22), and a limit sleeve (24) is installed through the middle end of the movable push rod (23), and the upper end of the limit sleeve (24) is fixedly mounted on the lower end of the fixed plate (6). A guide rod (25) is fixedly mounted on the lower end of the oil storage bin (7), and a knocking plate (26) is installed through the surface of the guide rod (25), and an inclined block (27) is fixedly mounted on the lower end of the knocking plate (26), and the inclined block (27) corresponds to the movable push rod (23). A vibration spring (28) is sleeved on the surface of the guide rod (25), and the upper and lower ends of the vibration spring (28) are arranged between the oil storage bin (7) and the knocking plate (26), and the upper end of the knocking plate (26) corresponds to the bottom of the oil storage bin (7).

8. The hydraulic control device for a hydraulic pile hammer according to claim 1, characterized in that: The anti-damage mechanism also includes a pressing block (32), and limit blocks (33) are fixedly installed at the upper and lower ends of the pressing block (32), and the pressing block (32) is slidably connected to the inner wall of the isolation chamber (30) through the limit blocks (33).

9. The hydraulic control device for a hydraulic pile hammer according to claim 1, characterized in that: A cam block (29) is arranged on the outer side of the gear rod (19), and the cam block (29) corresponds to a pressure block (32), and the pressure block (32) and the elastic airbag (31) form a pressed structure, an air guide tube (34) is installed through the lower end of the elastic airbag (31), and the lower end of the air guide tube (34) is connected to an air jet (35), and the inner side of the air jet (35) is fixedly installed on the outer side of the second hydraulic cylinder (3), and the air outlet of the air jet (35) is aligned with the connection between the second hydraulic cylinder (3) and the piston rod (4), and a one-way air inlet (36) is installed through the upper end of the elastic airbag (31), and a one-way valve is arranged inside the one-way air inlet (36).

10. The hydraulic control device for a hydraulic pile hammer according to claim 9, characterized in that: A control system of the hydraulic control device is also disclosed, which specifically comprises the following modules: A hydraulic control module is used to control the hydraulic pile hammer, and the hydraulic oil inside the system control valve body (1) is communicated so that the valve body (1) controls the piston rods (4) inside the first hydraulic cylinder (2) and the second hydraulic cylinder (3) through hydraulic pressure; A hydraulic oil filter module is connected to the inside of the valve body (1) through a flow guide pipe (14) and is connected to the hydraulic control module through a signal, and is used to filter the added hydraulic oil. The added hydraulic oil is filtered through a screen plate (10) inside the oil storage bin (7). The filtered hydraulic oil is pumped by a hydraulic pump (15) and sent to the inside of the valve body (1) for use. Anti-blocking module: when the hydraulic control module controls the pile hammer to drive the pile, the anti-blocking module knocks the inside of the oil storage tank (7) to avoid blockage of the hydraulic oil delivery; Anti-damage module: As the anti-blocking module works, air is automatically blown to the connection position between the second hydraulic cylinder (3) and the piston rod (4) to prevent impurities from causing damage to the connection position.

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