Pile driver control system and pile driver

Abstract

The utility model provides a pile driver control system and a pile driver. The control system comprises a secondary vibration button, a flow collecting valve, a main pump, an engine, a whole vehicle controller and a pressure sensor. The flow collecting valve is electrically connected with the secondary vibration button and is provided with a first oil inlet and a first oil outlet; the main pump communicates with a pile driver hydraulic motor through a second oil outlet and communicates with a first oil inlet of the flow collecting valve through a third oil outlet. The engine is in driving connection with the main pump and is in communication connection with the vehicle control unit; the vehicle control unit is further connected with a secondary vibration button or a flow collecting valve through a pressure sensor. And when the second-stage vibration button is in an open state, the hydraulic motor of the pile driver supplies oil through the second oil outlet and the third oil outlet, and the engine rotates at a second rotating speed greater than the first rotating speed. The multiple oil ways are combined through the flow collecting valve, the oil supply amount of the main pump is increased by increasing the rotating speed of the engine, the working efficiency during second-stage vibration is improved, and oil consumption during first-stage vibration can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of excavators, in particular to a pile driver control system and a pile driver. BACKGROUND

[0002] A pile driver is a special equipment that replaces the front device of an excavator with a special pile driving arm and is equipped with a high-speed rotating hydraulic pile hammer to drive various piles into or pull out of the ground. The vibration frequency of the pile hammer determines the work efficiency. The pile hammer equipped with a crawler-type hydraulic pile driver has two vibration modes: primary vibration and secondary vibration; the primary vibration is mainly for common working conditions, accounting for about 85%; the secondary vibration is mainly for more complex working conditions, accounting for about 15%. The pile hammer of the hydraulic pile driver is built-in with an eccentric hydraulic motor to generate vibration through high-speed rotation of the hydraulic motor; the greater the hydraulic oil flow entering the hydraulic motor, the faster the rotation speed, and the more obvious the impact effect. The secondary vibration is to preferentially provide the hydraulic oil of other oil paths to the vibration of the pile hammer, which requires a large flow and pressure provided by the main pump, so the demand for the power of the main pump is relatively large.

[0003] In the prior art, the normal working engine speed of the pile driver is about 1500 rpm, and at this speed, the vibration frequency of the pile hammer in secondary vibration is easily affected by the load, and the frequency decreases significantly when the load is heavy. If the speed is increased, although the vibration frequency in secondary vibration is stable, the fuel consumption is high and the economy is poor when dealing with relatively easy working conditions. Therefore, how to comprehensively consider the fuel consumption and the vibration frequency in secondary vibration has become a research direction of the technical personnel in the field. CONTENT OF THE INVENTION

[0004] The technical purpose of the present application is to provide a pile driver control system and a pile driver to solve the problem that the current installation cannot balance the fuel consumption and the vibration frequency in secondary vibration.

[0005] To solve the above technical problems, the present application provides a pile driver control system, comprising: a secondary vibration button, a confluence valve, a main pump, an engine, a vehicle controller and a pressure sensor.

[0006] The confluence valve is electrically connected with the secondary vibration button and is provided with a first oil inlet and a first oil outlet.

[0007] The main pump is communicated with the pile driver hydraulic motor through a second oil outlet and is communicated with the first oil inlet of the confluence valve through a third oil outlet.

[0008] The engine is drivingly connected with the main pump and is communicatively connected with the vehicle controller.

[0009] The vehicle controller is also connected with the secondary vibration button or the confluence valve through the pressure sensor;

[0010] When the secondary vibration button is in the closed state, the first inlet and the first outlet are not communicated, the pressure sensor transmits a first pressure signal to the vehicle controller, the vehicle controller outputs a first rotating speed signal to the engine, the rotating speed of the engine is a first rotating speed corresponding to the first rotating speed signal, and the pile driver hydraulic motor is supplied with oil through the second outlet;

[0011] When the secondary vibration button is in the open state, the first inlet and the first outlet are communicated, the pressure sensor transmits a second pressure signal to the vehicle controller, the vehicle controller outputs a second rotating speed signal to the engine, the rotating speed of the engine is a second rotating speed corresponding to the second rotating speed signal, the pile driver hydraulic motor is supplied with oil through the second outlet and the third outlet, and the second rotating speed is greater than the first rotating speed.

[0012] Specifically, the pile driver control system as described above, the confluence valve comprises a pilot oil way electromagnetic valve and a high pressure oil way electromagnetic valve;

[0013] The electromagnetic control end of the pilot oil way electromagnetic valve is electrically connected with the secondary vibration button, the first port of the pilot oil way electromagnetic valve is communicated with the hydraulic control end of the high pressure oil way electromagnetic valve, the second port of the pilot oil way electromagnetic valve is communicated with the pilot oil way, and the pilot oil way electromagnetic valve comprises a first working position for communicating the first port and the second port to supply oil to the hydraulic control end and a second working position for not communicating the first port and the second port;

[0014] The third port of the high pressure oil way electromagnetic valve is communicated with the first inlet, the fourth port of the high pressure oil way electromagnetic valve is communicated with the first outlet, and the high pressure oil way electromagnetic valve comprises a third working position for communicating the third port and the fourth port and a fourth working position for not communicating the third port and the fourth port;

[0015] When the secondary vibration button is in the closed state, the pilot oil way electromagnetic valve is in the second working position, and the high pressure oil way electromagnetic valve is in the fourth working position;

[0016] When the secondary vibration button is in the open state, the pilot oil way electromagnetic valve is in the first working position, and the high pressure oil way electromagnetic valve is in the third working position.

[0017] Further, the pile driver control system as described above, the pilot oil way electromagnetic valve further comprises a fifth port communicated with an oil tank;

[0018] When the pilot oil way electromagnetic valve is in the second working position, the first port and the fifth port are communicated, and the hydraulic control end is communicated with the oil tank through the first port and the fifth port.

[0019] Further, the pile driver control system as described above, the high pressure oil way electromagnetic valve further comprises a sixth port communicated with the center joint.

[0020] When the high pressure oil way electromagnetic valve is in the third working position, the third port and the sixth port are communicated, and the hydraulic control end is communicated with the center joint through the third port and the sixth port.

[0021] Optionally, the pile driver control system as described above, the pilot oil way electromagnetic valve and the high pressure oil way electromagnetic valve are two-position four-way electromagnetic valves.

[0022] Preferably, the pile driver control system as described above, a one-way valve is further arranged on the pipeline between the pile driver hydraulic motor and the first oil outlet.

[0023] Specifically, the pile driver control system as described above, the throttle knob of the engine is in a position corresponding to the second rotating speed.

[0024] Preferably, the pile driver control system as described above, the first rotating speed is 1500 revolutions per minute, and the second rotating speed is 1600 revolutions per minute.

[0025] Another embodiment of the present application further provides a pile driver, comprising a pile driver hammer and the pile driver control system as described above, wherein the pile driver hydraulic motor is arranged in the pile driver hammer.

[0026] Compared with the prior art, the pile driver control system and the pile driver provided by the embodiments of the present application have at least the following beneficial effects:

[0027] The pile driver control system provided by the present application improves the oil supply to the pile driver hydraulic motor by merging multiple oil ways through the setting of the merging valve when switching to the second level vibration, and improves the oil supply amount of the main pump by increasing the engine rotating speed through the setting of the pressure sensor and the vehicle controller, thereby improving the working efficiency during the second level vibration; at the same time, the oil is supplied at a lower rotating speed during the first level vibration, which is conducive to avoiding the increase of the oil consumption during the first level vibration. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a structural schematic diagram of the pile driver control system in the first level vibration according to an embodiment of the present application.

[0029]

LEGEND DESCRIPTION

[0030] 1, secondary vibration button; 2, merging valve; 201, first oil inlet; 202, first oil outlet; 203, pilot oil way electromagnetic valve; 2031, first working position; 2032, second working position; 204, high pressure oil way electromagnetic valve (204); 2041, third working position; 2042, fourth working position; 3, pile driver hydraulic motor; 4, main pump; 5, second oil outlet; 6, third oil outlet; 7, engine; 8, vehicle controller; 9, pressure sensor; 10, pilot oil way; 11, oil tank; 12, center joint; 13, check valve. DETAILED DESCRIPTION

[0031] To make the technical problems, technical solutions and advantages solved by the present application clearer, the following will be described in detail with reference to the drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of known functions and structures are omitted for clarity and brevity.

[0032] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0033] In various embodiments of the present application, it should be understood that the size of the serial number of the following processes does not mean the order of execution, and the execution order of the processes should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0034] It should be understood that the term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents that the front and rear associated objects are in an "or" relationship.

[0035] In the embodiments provided in the present application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that the determination of B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0036] Reference Figure 1The preferred embodiment of the present application provides a pile driver control system, comprising: a two-stage vibration button 1, a confluence valve 2, a main pump 4, an engine 7, a vehicle controller 8 and a pressure sensor 9;

[0037] The confluence valve 2 is electrically connected with the two-stage vibration button 1, and is provided with a first oil inlet 201 and a first oil outlet 202;

[0038] The main pump 4 is communicated with the pile driver hydraulic motor 3 through a second oil outlet 5, and is communicated with the first oil inlet 201 of the confluence valve 2 through a third oil outlet 6;

[0039] The engine 7 is drivingly connected with the main pump 4, and is communicatively connected with the vehicle controller 8;

[0040] The vehicle controller 8 is further connected with the two-stage vibration button 1 or the confluence valve 2 through the pressure sensor 9;

[0041] When the two-stage vibration button 1 is in a closed state, the first oil inlet 201 and the first oil outlet 202 are not communicated, the pressure sensor 9 transmits a first pressure signal to the vehicle controller 8, the vehicle controller 8 outputs a first rotating speed signal to the engine 7, the rotating speed of the engine 7 is a first rotating speed corresponding to the first rotating speed signal, and the pile driver hydraulic motor 3 is supplied with oil through the second oil outlet 5;

[0042] When the two-stage vibration button 1 is in an open state, the first oil inlet 201 and the first oil outlet 202 are communicated, the pressure sensor 9 transmits a second pressure signal to the vehicle controller 8, the vehicle controller 8 outputs a second rotating speed signal to the engine 7, the rotating speed of the engine 7 is a second rotating speed corresponding to the second rotating speed signal, the pile driver hydraulic motor 3 is supplied with oil through the second oil outlet 5 and the third oil outlet 6, and the second rotating speed is greater than the first rotating speed.

[0043] In the embodiment, the two-stage vibration button 1 is used not only to directly control the hydraulic system, but also to control the engine 7 to provide driving for the hydraulic system through the pressure sensor 9 and the vehicle controller 8.

[0044] Specifically, regarding the supply of hydraulic oil in the hydraulic system, when the two-stage vibration button 1 is in an unopened state, i.e., the pile driver is in one-stage vibration, the main pump 4 only supplies the pile driver hydraulic motor 3 with oil through the second oil outlet 5; when the two-stage vibration button 1 is in an opened state, i.e., the pile driver is in two-stage vibration, the main pump 4 supplies the pile driver hydraulic motor 3 with oil not only through the second oil outlet 5, but also through the third oil outlet 6 via the confluence valve 2, so that the pile driver hydraulic motor 3 has more oil supply in two-stage vibration than in one-stage vibration, thereby ensuring the striking effect.

[0045] Regarding the control of the engine 7, when the secondary vibration button 1 is in the unopened state, i.e., the pile driver is in the primary vibration, the pressure sensor 9 transmits a first pressure signal of the secondary vibration button 1 or the confluence valve 2 to the vehicle controller 8, wherein the first pressure signal indicates that the secondary vibration button 1 is not pressed or the pressure in the confluence valve 2 is not increased, and the vehicle controller 8 outputs a first rotating speed signal to the engine 7 according to the first pressure signal, so that the engine 7 rotates at a first rotating speed corresponding to the first rotating speed signal and drives the main pump 4 to supply oil to the pile driver hydraulic motor 3; when the secondary vibration button 1 is in the opened state, i.e., the pile driver is in the secondary vibration, the pressure sensor 9 transmits a second pressure signal of the secondary vibration button 1 or the confluence valve 2 to the vehicle controller 8, wherein the second pressure signal indicates that the secondary vibration button 1 is pressed or the pressure in the confluence valve 2 is increased, and the vehicle controller 8 outputs a second rotating speed signal to the engine 7 according to the second pressure signal, so that the engine 7 rotates at a second rotating speed corresponding to the second rotating speed signal and drives the main pump 4 to supply oil to the pile driver hydraulic motor 3, wherein the second rotating speed is greater than the first rotating speed, thereby increasing the oil supply of the main pump 4.

[0046] In summary, the pile driver control system provided by the present application can improve the oil supply to the pile driver hydraulic motor 3 by combining multiple oil paths through the confluence valve 2 when switching to secondary vibration, and can improve the oil supply of the main pump 4 by increasing the rotating speed of the engine 7 through the pressure sensor 9 and the vehicle controller 8, thereby improving the working efficiency during secondary vibration; at the same time, the oil is supplied at a lower rotating speed during primary vibration, which is beneficial to avoid increasing the oil consumption during primary vibration.

[0047] It should be noted that the second oil outlet 5 is preferably a control valve optional oil port, and the third oil outlet 6 is preferably a control valve walking oil port.

[0048] In another embodiment, preferably, the pile driver control system as described above, the first rotating speed is 1500 revolutions per minute, and the second rotating speed is 1600 revolutions per minute. Among them, the first rotating speed of 1500 revolutions per minute is used to ensure the normal operation of the pile driver during primary vibration, and the first rotating speed of 1600 revolutions per minute is used to improve the working efficiency of the pile driver during secondary vibration.

[0049] Referring to Figure 1 , in particular, the pile driver control system as described above, the confluence valve 2 comprises a pilot oil path electromagnetic valve 203 and a high-pressure oil path electromagnetic valve 204;

[0050] The electromagnetic control end of the pilot oil way electromagnetic valve 203 is electrically connected with the secondary vibration button 1, the first port of the pilot oil way electromagnetic valve 203 is communicated with the hydraulic control end of the high-pressure oil way electromagnetic valve 204, the second port of the pilot oil way electromagnetic valve 203 is communicated with the pilot oil way 10, and the pilot oil way electromagnetic valve 203 includes a first working position 2031 for supplying oil to the hydraulic control end by communicating the first port and the second port and a second working position 2032 for not communicating the first port and the second port.

[0051] The third port of the high-pressure oil way electromagnetic valve 204 is communicated with the first oil inlet 201, the fourth port of the high-pressure oil way electromagnetic valve 204 is communicated with the first oil outlet 202, and the high-pressure oil way electromagnetic valve 204 includes a third working position 2041 for communicating the third port and the fourth port and a fourth working position 2042 for not communicating the third port and the fourth port.

[0052] When the secondary vibration button 1 is in the closed state, the pilot oil way electromagnetic valve 203 is in the second working position 2032, and the high-pressure oil way electromagnetic valve 204 is in the fourth working position 2042.

[0053] When the secondary vibration button 1 is in the open state, the pilot oil way electromagnetic valve 203 is in the first working position 2031, and the high-pressure oil way electromagnetic valve 204 is in the third working position 2041.

[0054] In the embodiment, the confluence valve 2 includes a pilot oil way electromagnetic valve 203 and a high-pressure oil way electromagnetic valve 204. The electromagnetic control end of the pilot oil way electromagnetic valve 203 is electrically connected with the secondary vibration button 1. When the secondary vibration button 1 is pressed and in the open state, the secondary vibration button 1 supplies power to the electromagnetic control end of the pilot oil way electromagnetic valve 203, so that the working position of the pilot oil way electromagnetic valve 203 is switched to the first working position 2031 for communicating the pilot oil way 10 (as shown as P4 in FIG. 8) and the hydraulic control end (as shown as b in FIG. 8) of the high-pressure oil way electromagnetic valve 204, and then supplying oil to the hydraulic control end through the pilot oil way 10 to push the working position of the high-pressure oil way electromagnetic valve 204 to the third working position 2041 for communicating the third port (as shown as P in FIG. 8) and the fourth port (as shown as b in FIG. 8) of the high-pressure oil way electromagnetic valve 204. Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 Figure 1 ​​​​​The medium and high pressure oil circuit solenoid valve 204 corresponds to the third work position (shown in B), so that the main pump 4 supplies oil to the pile driver hydraulic motor 3 through the third oil outlet 6, the first oil inlet 201, the third port, the fourth port and the first oil outlet 202.

[0055] When the secondary vibration button 1 is not pressed and is in the non-open state, the secondary vibration button 1 does not power the electromagnetic control end of the pilot oil circuit solenoid valve 203, so that the working position of the pilot oil circuit solenoid valve 203 is switched to the second working position 2032 which is not connected through the first port and the second port, thereby making it impossible for the pilot oil circuit 10 to supply oil to the hydraulic control end, so that the working position of the high-pressure oil circuit solenoid valve 204 is switched to the fourth position which is not connected to the third port and the fourth port, thereby making it impossible for the main pump 4 to supply oil to the pile driver hydraulic motor 3 through the third oil outlet 6, the first oil inlet 201, the third port, the fourth port and the first oil outlet 202.

[0056] Among them, the setting of the pilot oil circuit solenoid valve 203 and the high-pressure oil circuit solenoid valve 204 enables the pilot oil circuit solenoid valve 203 to be driven by electromagnetic force, and the high-pressure oil circuit solenoid valve 204 to be driven by the pilot oil circuit 10, which is beneficial to improving the reliability and efficiency of the hydraulic system.

[0057] See also Figure 1 , further, in the pile driver control system as described above, the pilot oil circuit solenoid valve 203 further includes: a fifth port communicating with the oil tank 11;

[0058] When the pilot oil circuit solenoid valve 203 is in the second working position 2032 , the first port and the fifth port are in communication, and the hydraulic control end is in communication with the oil tank 11 through the first port and the fifth port.

[0059] In this embodiment, the pilot oil circuit solenoid valve 203 further includes a fifth port (such as Figure 1 (As shown in T corresponding to the pilot oil circuit solenoid valve 203), when the pilot oil circuit solenoid valve 203 is in the second working position 2032, the first port and the fifth port are connected, and the hydraulic oil in the hydraulic control end can be introduced into the oil tank 11, so as to facilitate the resetting of the high-pressure oil circuit solenoid valve 204.

[0060] See also Figure 1 , further, in the pile driver control system as described above, the high-pressure oil circuit solenoid valve 204 further includes: a sixth port communicating with the center joint 12;

[0061] When the high-pressure oil circuit solenoid valve 204 is in the third working position 2041 , the third port and the sixth port are in communication, and the hydraulic control end is in communication with the center joint 12 through the third port and the sixth port.

[0062] In this embodiment, the high-pressure oil circuit solenoid valve 204 further includes a sixth port (eg, Figure 1 (As shown in A corresponding to the medium and high pressure oil circuit solenoid valve 204), when the high pressure oil circuit solenoid valve 204 is in the third working position 2041, the third port and the sixth port are connected, so that the hydraulic oil of the third oil outlet 6 flows into the center joint 12 through the third port and the sixth port, avoiding the accumulation of hydraulic oil at the third port.

[0063] See also Figure 1 Optionally, in the pile driver control system described above, the pilot oil circuit solenoid valve 203 and the high-pressure oil circuit solenoid valve 204 are two-position four-way solenoid valves.

[0064] In one embodiment, the pilot oil circuit solenoid valve 203 is a two-position four-way solenoid valve, which includes, in addition to the first port, the second port and the fifth port mentioned above, a seventh port (such as Figure 1 (As shown in B corresponding to the pilot oil circuit solenoid valve 203 in the figure), wherein, when the pilot oil circuit solenoid valve 203 is in the first working position 2031, the seventh port is connected with the fifth port, so that the hydraulic oil in the hydraulic control end can enter the oil tank 11 through the seventh port, facilitating the switching of the high-pressure oil circuit solenoid valve 204 to the third working position 2041. When the pilot oil circuit solenoid valve 203 is in the second working position 2032, the seventh port is connected with the second port, so that the hydraulic oil in the pilot oil circuit 10 can reversely enter the hydraulic control end, facilitating the switching of the high-pressure oil circuit solenoid valve 204 to the fourth working position 2042.

[0065] In one embodiment, the high-pressure oil circuit solenoid valve 204 is a two-position four-way solenoid valve, which includes, in addition to the third port, the fourth port and the sixth port mentioned above, an eighth port (such as Figure 1 (As shown in T corresponding to the medium and high pressure oil circuit solenoid valve 204), the eighth port can be a passage or a non-passage.

[0066] See also Figure 1 Preferably, in the pile driver control system as described above, a one-way valve 13 is further provided on the pipeline between the pile driver hydraulic motor 3 and the first oil outlet 202 .

[0067] In this embodiment, by providing the one-way valve 13 , the hydraulic oil in the second oil outlet 5 can be prevented from entering the merging valve 2 , thereby ensuring the oil supply from the second oil outlet 5 to the hydraulic motor 3 of the pile driver.

[0068] Specifically, in the pile driver control system described above, the throttle knob of the engine 7 is in a position corresponding to the second speed.

[0069] In the embodiment, by rotating the throttle knob to the position corresponding to the second rotating speed, the maximum rotating speed of the engine 7 can reach the second rotating speed, so that the oil supply of the main pump 4 can be increased by increasing the rotating speed of the engine 7.

[0070] Another embodiment of the present application also provides a pile driver, comprising a pile hammer and a pile driver control system as described above, wherein the pile driver hydraulic motor is arranged in the pile hammer.

[0071] The pile driver provided by the embodiment can realize the switching between the primary vibration and the secondary vibration through the pile driver control system, and when switched to the secondary vibration, the oil supply to the pile driver hydraulic motor can be improved by arranging the confluence valve to combine the multiple oil paths, and the engine rotating speed can be improved by arranging the pressure sensor and the vehicle controller to improve the oil supply of the main pump, so that the working efficiency during the secondary vibration is improved; at the same time, the oil supply during the primary vibration is at a lower rotating speed, which is beneficial to avoid increasing the oil consumption during the primary vibration.

[0072] In addition, the reference numerals and / or letters can be repeated in different examples of the present application. Such repetition is for the purpose of simplification and clarity, and does not itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0073] It should also be noted that, in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion.

[0074] The above is the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles described in the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A pile driver control system, characterized in that, The application relates to a hydraulic system of a pile driver, which comprises a two-stage vibration button (1), a confluence valve (2), a main pump (4), an engine (7), a vehicle controller (8) and a pressure sensor (9). The two-stage vibration button (1) is electrically connected with the confluence valve (2) and is provided with a first oil inlet (201) and a first oil outlet (202). The main pump (4) is communicated with a pile driver hydraulic motor (3) through a second oil outlet (5) and is communicated with the first oil inlet (201) of the confluence valve (2) through a third oil outlet (6). The engine (7) is drivingly connected with the main pump (4) and is in communication connection with the vehicle controller (8). The vehicle controller (8) is further connected with the two-stage vibration button (1) or the confluence valve (2) through the pressure sensor (9). When the two-stage vibration button (1) is in a closed state, the first oil inlet (201) and the first oil outlet (202) are not communicated, the pressure sensor (9) transmits a first pressure signal to the vehicle controller (8), the vehicle controller (8) outputs a first rotating speed signal to the engine (7), the rotating speed of the engine (7) is a first rotating speed corresponding to the first rotating speed signal, and the pile driver hydraulic motor (3) is supplied with oil through the second oil outlet (5). When the two-stage vibration button (1) is in an opened state, the first oil inlet (201) and the first oil outlet (202) are communicated, the pressure sensor (9) transmits a second pressure signal to the vehicle controller (8), the vehicle controller (8) outputs a second rotating speed signal to the engine (7), the rotating speed of the engine (7) is a second rotating speed corresponding to the second rotating speed signal, the pile driver hydraulic motor (3) is supplied with oil through the second oil outlet (5) and the third oil outlet (6), and the second rotating speed is greater than the first rotating speed. The confluence valve (2) comprises a pilot oil way electromagnetic valve (203) and a high-pressure oil way electromagnetic valve (204).

2. The pile driver control system of claim 1, wherein, The electromagnetic control end of the pilot oil way electromagnetic valve (203) is electrically connected with the two-stage vibration button (1), the first port of the pilot oil way electromagnetic valve (203) is communicated with the hydraulic control end of the high-pressure oil way electromagnetic valve (204), the second port of the pilot oil way electromagnetic valve (203) is communicated with a pilot oil way (10), the pilot oil way electromagnetic valve (203) comprises a first working position (2031) for supplying oil to the hydraulic control end by communicating the first port and the second port and a second working position (2032) for not communicating the first port and the second port. The third port of the high-pressure oil way electromagnetic valve (204) is communicated with the first oil inlet (201), the fourth port of the high-pressure oil way electromagnetic valve (204) is communicated with the first oil outlet (202), the high-pressure oil way electromagnetic valve (204) comprises a third working position (2041) for communicating the third port and the fourth port and a fourth working position (2042) for not communicating the third port and the fourth port. ​ When the secondary vibration button (1) is in the closed state, the pilot oil way electromagnetic valve (203) is in the second working position (2032), and the high pressure oil way electromagnetic valve (204) is in the fourth working position (2042); When the secondary vibration button (1) is in the open state, the pilot oil way electromagnetic valve (203) is in the first working position (2031), and the high pressure oil way electromagnetic valve (204) is in the third working position (2041).

3. The pile driver control system of claim 2, wherein, The pilot oil way electromagnetic valve (203) further comprises a fifth port in communication with an oil tank (11); When the pilot oil way electromagnetic valve (203) is in the second working position (2032), the first port and the fifth port are in communication, and the hydraulic control end is in communication with the oil tank (11) through the first port and the fifth port.

4. The pile driver control system of claim 2, wherein, The high pressure oil way electromagnetic valve (204) further comprises a sixth port in communication with a center joint (12); When the high pressure oil way electromagnetic valve (204) is in the third working position (2041), the third port and the sixth port are in communication, and the hydraulic control end is in communication with the center joint (12) through the third port and the sixth port.

5. A pile driving machine control system according to any one of claims 2 to 4, characterised in that, The pilot oil way electromagnetic valve (203) and the high pressure oil way electromagnetic valve (204) are two-position four-way electromagnetic valves.

6. The pile driver control system of claim 1, wherein, A one-way valve (13) is further arranged on the pipeline between the pile driver hydraulic motor (3) and the first oil outlet (202).

7. The pile driver control system of claim 1, wherein, The throttle knob of the engine (7) is in a position corresponding to the second rotating speed.

8. The pile driver control system of claim 1, wherein, The first rotating speed is 1500 revolutions per minute, and the second rotating speed is 1600 revolutions per minute.

9. A pile driver, characterized in that Comprising: A pile driver and a pile driver control system according to any one of claims 1 to 8, wherein the pile driver hydraulic motor is arranged in the pile driver.

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