A control system for a dynamic compactor

Abstract

The application discloses a control system of a dynamic compactor, in a leading handle hammering mode, the output hammering pilot oil way of the leading handle sequentially passes through a height limiting control valve to a winch clutch control oil way, so that the winch clutch is closed; the output hammering pilot oil way of the leading handle sequentially passes through the height limiting control valve, a second shuttle valve to a winch brake control oil way, so that the winch brake is opened; the output hammering pilot oil way of the leading handle sequentially passes through the height limiting control valve, a fourth shuttle valve, a fifth shuttle valve and a second joint brake control valve X port, so that the second joint brake control valve is disconnected and the second joint brake is released; in a leading handle hammering mode, the output hammering pilot oil way of the leading handle sequentially passes through a third shuttle valve, a first shuttle valve, a second shuttle valve to the winch brake control oil way, so that the winch brake is opened; the output hammering pilot oil way of the leading handle sequentially passes through the third shuttle valve, the fifth shuttle valve and the second joint brake control valve X port, so that the second joint brake control valve is disconnected and the second joint brake is released. The application can freely control hammering and hammering release, has high safety and reliability and good stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of machinery, in particular to a control system of a dynamic compactor. BACKGROUND

[0002] The dynamic compactor uses the winch to repeatedly vertically lift the rammer, and uses the high impact generated by the high drop of the rammer to compact the foundation. The ramming energy of the dynamic compactor = drop height x weight of the rammer, for example: the weight of the rammer is 30T, the drop height is 15m, and the ramming energy = 30x15=450KN.m. The drop height refers to the free falling height of the rammer. The working mode of the dynamic compactor includes a disengaging mode and a non-disengaging mode. The disengaging mode refers to that the hoisting steel wire rope of the dynamic compactor is connected with a disengaging device, the disengaging device hooks the rammer to the drop height (i.e. the lifting state), the disengaging device releases the rammer (i.e. the dropping state), the rammer freely falls, and the disengaging device does not fall with the rammer. The non-disengaging mode refers to that the hoisting steel wire rope of the dynamic compactor is directly connected with the rammer, the rammer is lifted to the drop height (i.e. the lifting state), the brake holding mechanism and the clutch mechanism of the winch are loosened, the rammer freely falls (i.e. the dropping state), and the winch reverses under the pulling force of the rammer. Since the disengaging mode needs to lower the hoisting steel wire rope and the disengaging device to hook the rammer in each ramming process, the working efficiency of the disengaging mode is very low. The non-disengaging mode does not need to lower the hoisting steel wire rope and the hooking action in each ramming process, and thus the working efficiency of the non-disengaging mode is much higher than that of the disengaging mode.

[0003] No matter whether the dynamic compactor adopts the disengaging mode or the non-disengaging mode, it is very important to control the lifting and dropping of the rammer in the operation process in terms of safety, reliability and stability. SUMMARY

[0004] Therefore, the present application provides a control system of a dynamic compactor, which improves the safety, reliability and stability of the control of the lifting and dropping of the rammer.

[0005] In one aspect, the present application provides a control system of a dynamic compactor, which comprises a pilot handle, a two-stage combined brake control valve, a height limiting control valve, a first spool valve, a second spool valve, a third spool valve, a fourth spool valve and a fifth spool valve. The two-stage combined brake control valve controls the on-off of the air path between the compressed air of the air source and the two-stage combined brake.

[0006] In the lifting mode of the pilot handle, the output lifting pilot oil path of the pilot handle passes through the height limiting control valve to the winch clutch control oil path in sequence, so that the winch clutch is closed. The output lifting pilot oil path of the pilot handle passes through the height limiting control valve, the second spool valve and the winch brake control oil path in sequence, so that the winch brake is opened. The output lifting pilot oil path of the pilot handle passes through the height limiting control valve, the fourth spool valve, the fifth spool valve and the two-stage combined brake control valve X port in sequence, so that the two-stage combined brake control valve is disconnected, and the two-stage combined brake is released.

[0007] In the pilot handle hammer release mode, the output hammer release pilot oil way of the pilot handle passes through the third shuttle valve, the first shuttle valve, the second shuttle valve to the winch brake control oil way in turn, so that the winch brake is opened; the output hammer release pilot oil way of the pilot handle passes through the third shuttle valve, the fifth shuttle valve, the second level combined brake control valve X port in turn, so that the second level combined brake control valve is disconnected, and the second level combined brake is released.

[0008] In order to improve the safety and reliability and stability in the foot brake hammer release mode, in a further technical solution, a foot pedal proportional brake valve, a ramming control valve, a double control self-locking air control relay valve, a sixth shuttle valve and a seventh shuttle valve are included.

[0009] In the foot brake hammer release mode, the foot pedal proportional brake valve outputs a foot brake control gas which passes through the sixth shuttle valve and the double control self-locking air control relay valve O port in turn, so that the double control self-locking air control relay valve is opened; the compressed air of the air source passes through the double control self-locking air control relay valve, the seventh shuttle valve and the ramming control valve in turn, so that the ramming control valve is in the right position; the hydraulic oil of the main oil way passes through the ramming control valve, the third shuttle valve, the first shuttle valve, the second shuttle valve to the winch brake control oil way in turn, so that the winch brake is opened; the hydraulic oil of the main oil way passes through the ramming control valve, the third shuttle valve, the fifth shuttle valve and the second level combined brake control valve X port in turn, so that the second level combined brake control valve is disconnected, and the second level combined brake is released.

[0010] The foot pedal proportional brake valve outputs another foot brake control gas to realize the winch second level foot proportional brake, and when the foot pedal proportional brake valve is released, the winch second level foot proportional brake is released, the double control self-locking air control relay valve remains in the opened state, the winch brake remains in the opened state, and the ramming operation is realized.

[0011] In order to improve the safety and reliability and stability in the button hammer release mode, in a further technical solution, a button hammer control valve is included, and in the button hammer release mode, the button hammer signal makes the button hammer control valve open; the compressed air of the air source passes through the sixth shuttle valve and the double control self-locking air control relay valve O port in turn, so that the double control self-locking air control relay valve is opened; the compressed air of the air source passes through the double control self-locking air control relay valve, the seventh shuttle valve and the ramming control valve in turn, so that the ramming control valve is in the right position; the hydraulic oil of the main oil way passes through the ramming control valve, the third shuttle valve, the first shuttle valve, the second shuttle valve to the winch brake control oil way in turn, so that the winch brake is opened; the hydraulic oil of the main oil way passes through the ramming control valve, the third shuttle valve, the fifth shuttle valve and the second level combined brake control valve X port in turn, so that the second level combined brake control valve is disconnected, and the second level combined brake is released; and the ramming operation is realized.

[0012] In order to prevent the winch from being damaged due to the brake of the winch being operated by mistake during high-speed rotation of the winch, improve the safety and reliability of operation, and improve stability, in a further technical solution, a controller and a brake shielding control valve are included, the controller controls the brake shielding control valve to be turned on or turned off according to the rotation speed of the winch, the brake shielding control valve controls the main oil path to be connected to the winch brake control oil path, and when the rotation speed of the winch exceeds a preset rotation speed threshold, the controller controls the brake shielding control valve to be turned on, and the hydraulic oil of the main oil path sequentially passes through the brake shielding control valve, a first shuttle valve, a second shuttle valve, and the winch brake control oil path, so that the winch brake is opened.

[0013] In order to facilitate the maintenance and replacement of the steel wire rope of the dynamic compactor, in a further technical solution, a full free mode is included, in the full free mode, compressed air is input from a full free mode port, sequentially passes through a seventh shuttle valve and a ramming control valve, so that the ramming control valve is in a right position, the hydraulic oil of the main oil path sequentially passes through the ramming control valve, a third shuttle valve, the first shuttle valve, the second shuttle valve, and the winch brake control oil path, so that the winch brake is opened, the hydraulic oil of the main oil path sequentially passes through the ramming control valve, the third shuttle valve, a fifth shuttle valve, and an X port of a two-stage combined brake control valve, so that the two-stage combined brake control valve is disconnected, and the two-stage combined brake is released.

[0014] In order to improve the safety and reliability of operation and improve stability, in a further technical solution, a flameout safety control is included, in the flameout safety control, the hydraulic oil sequentially passes through a fourth shuttle valve, a fifth shuttle valve, and an X port of a two-stage combined brake control valve, so that the two-stage combined brake control valve is disconnected, and the two-stage combined brake is released, the hydraulic oil sequentially passes through the fourth shuttle valve and a control port of the ramming control valve, so that the ramming control valve is in a left position, and the hydraulic oil sequentially passes through the fourth shuttle valve and a L control port of a double-control self-locking air-controlled relay valve, so that the double-control self-locking air-controlled relay valve is closed.

[0015] In order to improve the safety and reliability of operation and improve stability, in a further technical solution, in a pilot handle hammering mode, an output hammering pilot oil path of the pilot handle sequentially passes through a height limiting control valve, the fourth shuttle valve, and a control port of the ramming control valve, so that the ramming control valve is in the left position, and the hydraulic oil sequentially passes through the fourth shuttle valve and a L control port of the double-control self-locking air-controlled relay valve, so that the double-control self-locking air-controlled relay valve is closed.

[0016] In order to improve the safety and reliability of operation and improve stability, in a further technical solution, a height limiting control is included, the controller controls the height limiting control valve to be turned on or turned off according to the hammering height, and when the hammering height reaches a preset height threshold, the height limiting control valve is disconnected.

[0017] In order to improve the safety and reliability of operation and improve stability, in a further technical solution, a ramming release signal switch is included, a control port of the ramming release signal switch is connected to a first input port of the third shuttle valve and an output port B of the ramming control valve.

[0018] In order to improve the safety and reliability and stability of operation, in further technical solutions, the fast brake signal switch is connected with the second input port of the third shuttle valve and the output brake oil road of the pilot handle.

[0019] The strong ramming machine control system has the following advantages compared with the prior art:

[0020] The strong ramming machine control includes the pilot handle lifting mode, the pilot handle brake mode, the foot brake brake mode, the button brake brake mode, the full free mode, the fire extinguishing safety control, the brake shielding control, the height limiting control, etc., and the electric, gas and oil mixed control, so that the safety, reliability and stability of the strong ramming machine in the operation process are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the application and are incorporated herein by reference. The embodiments of the present application, illustrated in the drawings and described below, serve to explain the present application and do not limit the present application in any way. In the drawings:

[0022] Figure 1 The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the application and are incorporated herein by reference. The embodiments of the present application, illustrated in the drawings and described below, serve to explain the present application and do not limit the present application in any way. In the drawings: DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] As Figure 1As shown, the present invention preferably provides a dynamic compaction machine control system, including a pilot handle, a secondary combined braking control valve 5, a height limit control valve 6, a first shuttle valve 7, a second shuttle valve 8, a third shuttle valve 9, a fourth shuttle valve 10, and a fifth shuttle valve 11. The P port of the secondary combined braking control valve 5 is connected to an air source, and the A port of the secondary combined braking control valve 5 is connected to the air circuit of the secondary combined braking system. The secondary combined braking control valve 5 controls the opening and closing of the air circuit between the compressed air from the air source and the secondary combined braking system. The output hammer-lifting pilot oil circuit of the pilot handle is connected to the P port of the height limit control valve 6, the A port of the height limit control valve 6 is connected to the hoist clutch control oil circuit and the first input ports of the second shuttle valve 8 and the fourth shuttle valve 10, and the T port of the height limit control valve 6 is connected to the main return oil circuit. The second input port of the fourth shuttle valve 10 is connected to the flameout safety control input port, and the output port of the fourth shuttle valve 10 is connected to the first input port of the fifth shuttle valve 11, the L control port of the dual-control self-locking pneumatic relay valve 3, and the control port of the ramming control valve 2. The output port of the second shuttle valve 8 is connected to the winch brake control oil circuit, the output port of the first shuttle valve 7 is connected to the second input port of the second shuttle valve 8, and the output port of the third shuttle valve 9 is connected to the first input port of the first shuttle valve 7 and the second input port of the fifth shuttle valve 11. The B port of the dual-control self-locking pneumatic relay valve 3 is connected to the second input port of the third shuttle valve 9, and the output hammer release pilot oil circuit of the pilot handle is connected to the first input port of the third shuttle valve 9.

[0025] In the pilot handle hammer-raising mode, the output hammer-raising pilot oil circuit of the pilot handle passes sequentially through the height limit control valve 6 to the winch clutch control oil circuit, causing the winch clutch to close; the output hammer-raising pilot oil circuit of the pilot handle passes sequentially through the height limit control valve 6 and the second shuttle valve 8 to the winch brake control oil circuit, causing the winch brake to open; the output hammer-raising pilot oil circuit of the pilot handle passes sequentially through the height limit control valve 6, the fourth shuttle valve 10, the fifth shuttle valve 11, and the X port of the secondary combined brake control valve 5, causing the secondary combined brake control valve 5 to disconnect and the secondary combined brake to be released.

[0026] The controller controls the opening and closing of the height limit control valve 6 according to the hammer lifting height; when the hammer lifting height reaches the preset height threshold, the height limit control valve 6 is disconnected, and the output hammer lifting pilot oil circuit of the pilot handle cannot cause the winch clutch to close and the winch brake to open.

[0027] In the pilot handle hammer-raising mode, the output hammer-raising pilot oil circuit of the pilot handle passes sequentially through the height limit control valve 6, the fourth shuttle valve 10, and the control port of the tamping control valve 2, so that the tamping control valve 2 is in the left position; the hydraulic oil passes sequentially through the fourth shuttle valve 10 and the L control port of the double-control self-locking pneumatic relay valve 3, so that the double-control self-locking pneumatic relay valve 3 is closed.

[0028] In the pilot handle hammer release mode, the output hammer release pilot oil path of the pilot handle passes through the third shuttle valve 9, the first shuttle valve 7, the second shuttle valve 8 to the winch brake control oil path in turn, so that the winch brake is opened; the output hammering pilot oil path of the pilot handle passes through the third shuttle valve 9, the fifth shuttle valve 11, the X port of the two-stage combined brake control valve 5 in turn, so that the two-stage combined brake control valve 5 is disconnected, and the two-stage combined brake is released.

[0029] In order to improve the safety and reliability and stability in the foot brake hammer release mode, in a further technical solution, a foot pedal proportional brake valve, a ramming control valve 2, a double control self-locking air control relay valve 3, a sixth shuttle valve 12 and a seventh shuttle valve 13 are included. The output port of the seventh shuttle valve 13 is connected with the right end control port of the ramming control valve 2, the first input port of the seventh shuttle valve 13 is connected with the full free mode input port, the second input port of the seventh shuttle valve 13 is connected with the T port of the double control self-locking air control relay valve 3, and the P port of the double control self-locking air control relay valve 3 is connected with the air source. The O port of the double control self-locking air control relay valve 3 is connected with the output port of the sixth shuttle valve 12, and the first input port and the second input port of the sixth shuttle valve 12 are respectively connected with the foot pedal proportional brake valve and the A of the pedal hammer release control valve 4. The P port of the ramming control valve 2 is connected with the main oil path.

[0030] In the foot brake hammer release mode, one way of foot brake control gas output by the foot pedal proportional brake valve passes through the sixth shuttle valve 12 and the O port of the double control self-locking air control relay valve 3 in turn, so that the double control self-locking air control relay valve 3 is opened; the compressed air of the air source passes through the double control self-locking air control relay valve 3, the seventh shuttle valve 13 and the ramming control valve 2 in turn, so that the ramming control valve 2 is in the right position; the hydraulic oil of the main oil path passes through the ramming control valve 2, the third shuttle valve 9, the first shuttle valve 7, the second shuttle valve 8 to the winch brake control oil path in turn, so that the winch brake is opened; the hydraulic oil of the main oil path passes through the ramming control valve 2, the third shuttle valve 9, the fifth shuttle valve 11 and the X port of the two-stage combined brake control valve 5 in turn, so that the two-stage combined brake control valve 5 is disconnected, and the two-stage combined brake is released.

[0031] The other way of foot brake control gas output by the foot pedal proportional brake valve makes the winch two-stage foot proportional brake, and when the foot pedal proportional brake valve is released, the winch two-stage foot proportional brake is released, the double control self-locking air control relay valve 3 remains in the opened state, the winch brake remains in the opened state, and the ramming operation is realized.

[0032] In order to improve the safety and reliability and stability in the mode of putting hammer by the button, in the further technical scheme, the button hammer control valve 4 is connected with the air source at the P port. In the mode of putting hammer by the button, the button hammer signal makes the button hammer control valve 4 open, and the compressed air of the air source passes through the sixth shuttle valve 12 and the O port of the double-control self-locking air-controlled relay valve 3 in sequence, so that the double-control self-locking air-controlled relay valve 3 is opened; the compressed air of the air source passes through the double-control self-locking air-controlled relay valve 3, the seventh shuttle valve 13 and the ramming control valve 2, so that the ramming control valve 2 is in the right position; the hydraulic oil of the main oil way passes through the ramming control valve 2, the third shuttle valve 9, the first shuttle valve 7, the second shuttle valve 8 and the winch brake control oil way in sequence, so that the winch brake is opened; the hydraulic oil of the main oil way passes through the ramming control valve 2, the third shuttle valve 9, the fifth shuttle valve 11 and the X port of the two-stage combined brake control valve 5 in sequence, so that the two-stage combined brake control valve 5 is disconnected, and the two-stage combined brake is released; and the ramming operation is realized.

[0033] In order to prevent the winch and the steel wire rope from being damaged due to the winch brake caused by misoperation during the high-speed rotation of the winch, and improve the safety and reliability and stability of the operation, in the further technical scheme, the controller and the brake shielding control valve 1 are connected, the P port of the brake shielding control valve 1 is connected with the main oil way, and the B port of the brake shielding control valve 1 is connected with the second input port of the first shuttle valve 7. The controller controls the opening and closing of the brake shielding control valve 1 according to the rotation speed of the winch; the brake shielding control valve 1 controls the main oil way to the winch brake control oil way; when the rotation speed of the winch exceeds the preset rotation speed threshold value, the controller controls the brake shielding control valve 1 to open, and the hydraulic oil of the main oil way passes through the brake shielding control valve 1, the first shuttle valve 7, the second shuttle valve 8 and the winch brake control oil way in sequence, so that the winch brake is opened.

[0034] In order to facilitate the maintenance and replacement of the steel wire rope and other operations of the rammer compactor, in the further technical scheme, the full freedom mode is provided, in which the input of the air source compressed air from the full freedom mode port passes through the seventh shuttle valve 13 and the ramming control valve 2 in sequence, so that the ramming control valve 2 is in the right position; the hydraulic oil of the main oil way passes through the ramming control valve 2, the third shuttle valve 9, the first shuttle valve 7, the second shuttle valve 8 and the winch brake control oil way in sequence, so that the winch brake is opened; the hydraulic oil of the main oil way passes through the ramming control valve 2, the third shuttle valve 9, the fifth shuttle valve 11 and the X port of the two-stage combined brake control valve 5 in sequence, so that the two-stage combined brake control valve 5 is disconnected, and the two-stage combined brake is released.

[0035] In order to improve the safety and reliability of the operation and stability, in further technical solutions, including flameout safety control, under the flameout safety control, the hydraulic oil passes through the fourth shuttle valve 10, the fifth shuttle valve 11, the X port of the two-stage combined brake control valve 5 in turn, so that the two-stage combined brake control valve 5 is disconnected, and the two-stage combined brake is released; the hydraulic oil passes through the fourth shuttle valve 10, the ramming control valve 2 control port in turn, so that the ramming control valve 2 is in the left position; the hydraulic oil passes through the fourth shuttle valve 10, the L control port of the double-control self-locking air control relay valve 3 in turn, so that the double-control self-locking air control relay valve 3 is closed.

[0036] The ramming release signal switch 14 is connected with the first input port of the third shuttle valve 9 and the output port B of the ramming control valve 2. The quick release brake signal switch 15 is connected with the second input port of the third shuttle valve 9 and the output release hammer pilot oil way of the pilot handle.

[0037] The above-mentioned technologies are the common knowledge of those skilled in the art. The above-mentioned only is the preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A control system for a dynamic compactor, characterized in that, The first pilot handle, the second joint brake control valve (5), the height limiting control valve (6), the first shuttle valve (7), the second shuttle valve (8), the third shuttle valve (9), the fourth shuttle valve (10) and the fifth shuttle valve (11) are included. In the hammer lifting mode of the pilot handle, the output hammer lifting pilot oil path of the pilot handle passes through the height limiting control valve (6) to the winch clutch control oil path in sequence, so that the winch clutch is closed; the output hammer lifting pilot oil path of the pilot handle passes through the height limiting control valve (6) and the second shuttle valve (8) to the winch brake control oil path in sequence, so that the winch brake is opened; the output hammer lifting pilot oil path of the pilot handle passes through the height limiting control valve (6), the fourth shuttle valve (10), the fifth shuttle valve (11) and the second joint brake control valve (5) X port in sequence, so that the second joint brake control valve (5) is disconnected, and the second joint brake is released. In the hammer dropping mode of the pilot handle, the output hammer dropping pilot oil path of the pilot handle passes through the third shuttle valve (9), the first shuttle valve (7) and the second shuttle valve (8) to the winch brake control oil path in sequence, so that the winch brake is opened; the output hammer dropping pilot oil path of the pilot handle passes through the third shuttle valve (9) and the fifth shuttle valve (11) and the second joint brake control valve (5) X port in sequence, so that the second joint brake control valve (5) is disconnected, and the second joint brake is released.

2. The control system of claim 1, wherein, The foot pedal proportional brake valve, the ramming control valve (2), the double control self-locking air control relay valve (3), the sixth shuttle valve (12) and the seventh shuttle valve (13) are included. In the foot pedal brake hammer dropping mode, one way of the foot pedal brake control gas output by the foot pedal proportional brake valve passes through the sixth shuttle valve (12) and the double control self-locking air control relay valve (3) O port in sequence, so that the double control self-locking air control relay valve (3) is opened; the compressed air of the air source passes through the double control self-locking air control relay valve (3), the seventh shuttle valve (13) and the ramming control valve (2) in sequence, so that the ramming control valve (2) is in the right position; the hydraulic oil of the main oil path passes through the ramming control valve (2), the third shuttle valve (9), the first shuttle valve (7) and the second shuttle valve (8) to the winch brake control oil path in sequence, so that the winch brake is opened; the hydraulic oil of the main oil path passes through the ramming control valve (2), the third shuttle valve (9), the fifth shuttle valve (11) and the second joint brake control valve (5) X port in sequence, so that the second joint brake control valve (5) is disconnected, and the second joint brake is released. The other way of the foot pedal brake control gas output by the foot pedal proportional brake valve makes the winch second foot proportional brake, when the foot pedal proportional brake valve is released, the winch second foot proportional brake is released, the double control self-locking air control relay valve (3) remains in the opened state, the winch brake remains in the opened state, and the ramming operation is realized.

3. The control system of claim 2, wherein, The control valve (4) is opened by the toggle hammer signal in the toggle hammer mode, and the compressed air of the air source passes through the sixth shuttle valve (12) and the double-control self-locking air-controlled relay valve (3) O port in sequence, so that the double-control self-locking air-controlled relay valve (3) is opened; the compressed air of the air source passes through the double-control self-locking air-controlled relay valve (3), the seventh shuttle valve (13) and the ramming control valve (2), so that the ramming control valve (2) is in the right position; the hydraulic oil of the main oil way passes through the ramming control valve (2), the third shuttle valve (9), the first shuttle valve (7), the second shuttle valve (8) to the winch brake control oil way in sequence, so that the winch brake is opened; the hydraulic oil of the main oil way passes through the ramming control valve (2), the third shuttle valve (9), the fifth shuttle valve (11) and the two-stage combined brake control valve (5) X port in sequence, so that the two-stage combined brake control valve (5) is disconnected, and the two-stage combined brake is released; and the ramming operation is realized.

4. The control system of claim 3, wherein, The controller controls the on-off of the brake shielding control valve (1) according to the winch speed; the brake shielding control valve (1) controls the main oil way to the winch brake control oil way; when the winch speed exceeds the preset speed threshold, the controller controls the brake shielding control valve (1) to be opened, and the hydraulic oil of the main oil way passes through the brake shielding control valve (1), the first shuttle valve (7) and the second shuttle valve (8) to the winch brake control oil way in sequence, so that the winch brake is opened.

5. The control system of claim 4, wherein, The hydraulic oil of the main oil way passes through the ramming control valve (2), the third shuttle valve (9), the first shuttle valve (7), the second shuttle valve (8) to the winch brake control oil way in sequence, so that the winch brake is opened; the hydraulic oil of the main oil way passes through the ramming control valve (2), the third shuttle valve (9), the fifth shuttle valve (11) and the two-stage combined brake control valve (5) X port in sequence, so that the two-stage combined brake control valve (5) is disconnected, and the two-stage combined brake is released.

6. The control system of claim 5, wherein, The hydraulic oil passes through the fourth shuttle valve (10), the fifth shuttle valve (11) and the two-stage combined brake control valve (5) X port in sequence, so that the two-stage combined brake control valve (5) is disconnected, and the two-stage combined brake is released; the hydraulic oil passes through the fourth shuttle valve (10) and the ramming control valve (2) control port in sequence, so that the ramming control valve (2) is in the left position; and the hydraulic oil passes through the fourth shuttle valve (10) and the double-control self-locking air-controlled relay valve (3) L control port in sequence, so that the double-control self-locking air-controlled relay valve (3) is closed.

7. The control system of claim 6, wherein, In the pilot handle lifting mode, the output lifting pilot oil way of the pilot handle passes through the height limiting control valve (6), the fourth shuttle valve (10) and the ramming control valve (2) control port in sequence, so that the ramming control valve (2) is in the left position; and the hydraulic oil passes through the fourth shuttle valve (10) and the double-control self-locking air-controlled relay valve (3) L control port in sequence, so that the double-control self-locking air-controlled relay valve (3) is closed.

8. The control system of claim 7, wherein, The height limiting control includes a height limiting control valve (6) controlled by the controller according to the ram height; when the ram height reaches a preset threshold, the height limiting control valve (6) is disconnected.

9. The control system of claim 8, wherein, The tamper release signal switch (14) is connected with the first input port of the third shuttle valve (9) and the output port B of the tamper control valve (2).

10. The control system of claim 8, wherein, The fast release clutch signal switch (15) is connected with the second input port of the third shuttle valve (9) and the output release ram pilot oil path of the pilot handle.

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