CN114483678A - Dynamic compactor and electro-hydraulic control system thereof - Google Patents

Dynamic compactor and electro-hydraulic control system thereof Download PDF

Info

Publication number
CN114483678A
CN114483678A CN202210032518.8A CN202210032518A CN114483678A CN 114483678 A CN114483678 A CN 114483678A CN 202210032518 A CN202210032518 A CN 202210032518A CN 114483678 A CN114483678 A CN 114483678A
Authority
CN
China
Prior art keywords
controller
oil
control system
electro
dynamic compactor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210032518.8A
Other languages
Chinese (zh)
Other versions
CN114483678B (en
Inventor
周国云
宗志锋
董梁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sany America Inc
Original Assignee
Sany America Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sany America Inc filed Critical Sany America Inc
Priority to CN202210032518.8A priority Critical patent/CN114483678B/en
Publication of CN114483678A publication Critical patent/CN114483678A/en
Application granted granted Critical
Publication of CN114483678B publication Critical patent/CN114483678B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/08—Driving gear incorporating fluid motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/26—Operating devices pneumatic or hydraulic
    • B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • F15B11/0423—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling pump output or bypass, other than to maintain constant speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/085—Servomotor systems incorporating electrically operated control means using a data bus, e.g. "CANBUS"
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Road Paving Machines (AREA)

Abstract

The invention relates to the technical field of dynamic compactors, and provides a dynamic compactor of an electro-hydraulic control system of a dynamic compactor. The invention provides an electro-hydraulic control system of a dynamic compactor, which comprises: a controller; the main hoisting power mechanism is electrically connected with the controller, can execute corresponding actions according to action instructions sent by the controller, and can also send real-time state parameters to the controller; the execution mechanism is electrically connected with the controller, can execute corresponding actions according to the actions sent by the controller, and can also send real-time state parameters to the controller; the actuating mechanism is connected with the main hoisting power mechanism through a hydraulic pipeline. According to the electro-hydraulic control system of the dynamic compactor, the controller is connected with the main hoisting power mechanism and the executing mechanism, output can be customized, the main hoisting action is accurately controlled, and the control precision of the servo system of the dynamic compactor is improved.

Description

Dynamic compactor and electro-hydraulic control system thereof
Technical Field
The invention relates to the technical field of dynamic compactors, in particular to an electro-hydraulic control system of a dynamic compactor and the dynamic compactor.
Background
The dynamic compactor uses a winch to repeatedly and vertically lift a rammer, and uses high impact generated by the high fall of the rammer to tamp the foundation. The existing dynamic compactor servo system is a hydraulic control system, the flow regulation of the system adjusts the pilot oil pressure of a main valve through a handle pressure reducing valve so as to control the opening of the main valve, and the purpose of regulating the rotating speed of a flow control motor is achieved.
Disclosure of Invention
The invention provides an electro-hydraulic control system of a dynamic compactor and the dynamic compactor, which are used for solving the defect that a servo hydraulic control system of the dynamic compactor in the prior art is low in control precision.
The invention provides an electro-hydraulic control system of a dynamic compactor, which comprises: a controller; the main hoisting power mechanism is electrically connected with the controller, can execute corresponding actions according to action instructions sent by the controller, and can also send real-time state parameters to the controller; the execution mechanism is electrically connected with the controller, can execute corresponding actions according to the actions sent by the controller, and can also send real-time state parameters to the controller; the actuating mechanism is connected with the main hoisting power mechanism through a hydraulic pipeline.
According to the electro-hydraulic control system of the dynamic compaction machine provided by the invention, the actuating mechanism comprises: the motor is connected with the main hoisting power mechanism through an oil way and is electrically connected with the controller; the brake is used for braking the main hoisting drum, an on-off control module is arranged on a hydraulic oil path connected with the main hoisting power mechanism and used for controlling the on-off of the hydraulic oil path.
According to the electro-hydraulic control system of the dynamic compactor, the on-off control module comprises a first reversing valve, the first reversing valve is at least provided with two working positions, and when the first reversing valve is located at the first working position, the main hoisting power mechanism can supply oil to the brake; when the first reversing valve is located at the second working position, one side of the brake supplied with oil by the main hoisting power mechanism flows into the oil tank through the first reversing valve.
According to the electro-hydraulic control system of the dynamic compaction machine, the main hoisting power mechanism comprises: the engine is in communication connection with the controller; the engine can drive the power assemblies to work, the power assemblies are connected with the motor through oil paths, and each power assembly is electrically connected with the controller.
According to the invention, the electro-hydraulic control system of the dynamic compactor comprises the following power components: the pump set is connected with the engine through a transfer case, a first oil port of the pump set is communicated with a first oil port of the motor, a second oil port of the pump set is communicated with a second oil port of the motor, and the pump set is electrically connected with the controller; the pressure sensor is arranged at a pressure measuring port of the pump group and is electrically connected with the controller; and the oil replenishing pump is connected with the engine through the transfer case.
According to the invention, the electro-hydraulic control system of the dynamic compactor further comprises a free hook falling control mechanism, and the free hook falling control mechanism comprises: a clutch; and the first control valve group is connected with the clutch through an oil way.
According to the electro-hydraulic control system of the dynamic compactor, the first control valve group comprises: the main hoisting power mechanism comprises a second reversing valve and a first electric proportional valve, wherein the second reversing valve is provided with at least two working positions, and when the second reversing valve is positioned at a first working position, the main hoisting power mechanism can supply oil to the clutch through the second reversing valve and the first electric proportional valve; when the second reversing valve is located at a second working position, one side of the clutch, which is supplied with oil by the main winch, flows into an oil tank through the first electro-proportional valve and the second reversing valve.
The electro-hydraulic control system of the dynamic compactor further comprises a heat dissipation mechanism, and the heat dissipation mechanism is electrically connected with the controller.
According to the invention, the electro-hydraulic control system of the dynamic compactor comprises a heat dissipation mechanism and a control mechanism, wherein the heat dissipation mechanism comprises: a fan; a first pump connected with the fan; and the third reversing valve is connected with the first pump through an oil way and is electrically connected with the controller.
The invention also provides a dynamic compactor, which comprises the electro-hydraulic control system of the dynamic compactor.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an electro-hydraulic control system of a dynamic compactor provided by the invention;
FIG. 2 is a schematic diagram of the actuator shown in FIG. 1;
FIG. 3 is a schematic diagram of the power assembly shown in FIG. 1;
FIG. 4 is a schematic diagram of the first control valve block shown in FIG. 1;
FIG. 5 is a schematic diagram of the heat dissipation mechanism shown in FIG. 1;
reference numerals:
10: a controller; 20: a motor; 21: a brake; 22: a first direction changing valve; 31: an engine; 32: a pump group; 33: an oil replenishing pump; 50: a heat dissipation mechanism; 51: a third directional control valve; 52: a first pump; 53: a fan; 60: a handle; 70: a clutch; 71: a first control valve group; 80: a second control valve group; 90: a main hoisting drum; 321: a second pump; 322: a second electro proportional valve; 711: a second directional control valve; 712: a first electro proportional valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The features of the terms first and second in the description and in the claims of the invention may explicitly or implicitly include one or more of these features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The electro-hydraulic control system of the dynamic compactor and the dynamic compactor are described in the following with reference to fig. 1-5.
The electro-hydraulic control system of the dynamic compaction machine provided by the embodiment of the invention comprises: the system comprises a controller 10, a main hoisting power mechanism and an executing mechanism, wherein the main hoisting power mechanism is electrically connected with the controller, and can execute corresponding actions according to instructions sent by the controller and also can send real-time state parameters to the controller; the execution mechanism is electrically connected with the controller, can execute corresponding actions according to the actions sent by the controller, and can also send real-time state parameters to the controller; the actuating mechanism is connected with the main hoisting power mechanism through a hydraulic pipeline.
Specifically, the controller 10 calculates an output current according to characteristic curves of the main hoisting power mechanism and the execution mechanism, controls the main hoisting power mechanism to operate according to the output current, the main hoisting power mechanism operates to drive the execution mechanism to act, the main hoisting power mechanism and the execution mechanism feed back specific operation parameters to the controller 10 in the operation process, and the controller 10 adjusts the specific parameters of the main hoisting power mechanism and the execution mechanism according to specific working conditions so as to meet the requirements of the specific working conditions.
Further, in an embodiment of the present invention, the main winding power mechanism includes: an engine and a pump, and the actuator includes a motor 20. The engine is mechanically connected with the pump coaxially, a first oil port of the pump is communicated with a first oil port of the motor 20, and a second oil port of the pump is communicated with a second oil port of the motor 20. When the main winch drum 90 works, the engine drives the pump to rotate, hydraulic oil in the pump enters the first oil port or the second oil port of the motor 20 from the first oil port or the second oil port of the pump to drive the motor 20 to rotate, and therefore the main winch drum 90 is driven to rotate in the forward direction or the reverse direction.
The controller 10 is electrically connected to the engine and the pump, and during the operation of the engine, the controller 10 calculates an output current according to the opening degree of the handle 60, the characteristic curves of the engine, the pump, and the motor 20, and controls the displacement of the pump according to the output current. The engine feeds back the engine speed and the load factor to the controller 10, the pump feeds back the pump internal pressure to the controller 10, and the controller 10 controls the displacement of the pump according to the engine speed, the load factor, and the pump internal pressure, thereby controlling the displacement of the motor 20. For example, if the main winding drum 90 rotates faster, the controller 10 may adjust the electric proportional valve on the pump to adjust the displacement of the pump, increase the displacement of the pump, and decrease the displacement of the motor 20, so that the rotation speed of the main winding drum 90 is increased, the main winding drum 90 rotates faster, and the main winding rotates faster.
Further, in the embodiment of the present invention, the engine speed is controlled by the accelerator, the controller 10 sets a suitable speed according to specific conditions, the accelerator is stepped on, the engine speed is increased, and when the engine speed reaches the suitable speed set by the controller 10, the engine maintains the speed to work.
According to the electro-hydraulic control system of the dynamic compactor provided by the embodiment of the invention, the controller is connected with the main hoisting power mechanism and the executing mechanism, so that the output can be customized, the main hoisting action is accurately controlled, and the control precision of the servo system of the dynamic compactor is improved.
As shown in fig. 2, in one embodiment of the present invention, the actuator comprises: a motor 20, a brake 21 and a first direction valve 22. The motor 20 is connected with the main winding power mechanism through an oil path, and the motor 20 is electrically connected with the controller 10. The brake 21 is used for braking the main hoisting drum 90, a first reversing valve 22 is arranged on a hydraulic oil path connected between the brake 21 and the main hoisting power mechanism, and the first reversing valve 22 is used for controlling the on-off of the hydraulic oil path.
Specifically, controller 10 may directly control the displacement of motor 20 and adjust the speed of motor 20 based on specific operating conditions. The brake 21 is used for braking the main hoisting drum 90, when oil enters the motor 20, the brake 21 releases the brake on the motor 20, and the motor 20 rotates to drive the main hoisting drum 90 to rotate; when there is no oil in the motor 20, the brake 21 grips the main winding drum 90.
As shown in fig. 3, in an embodiment of the present invention, the on-off control module includes a first direction valve 22, the first direction valve 22 has at least two working positions, and when the first direction valve 22 is in the first working position, the main hoisting power mechanism can supply oil to the brake 21; when the first reversing valve 22 is in the second working position, the side of the brake 21 supplied with oil by the main hoisting power mechanism flows into the oil tank through the first reversing valve 22.
Specifically, when oil is drawn into the motor 20, the pressure causes the brake 21 to release the brake on the motor 20. At this time, the first direction valve 22 is in the first working position, the oil inlet of the first direction valve 22 is communicated with the first working oil port of the first direction valve 22, and the first working oil port of the first direction valve 22 is communicated with the rod cavity of the brake 21. Hydraulic oil enters the rod cavity of the brake 21 through the first reversing valve 22 to enable the piston rod to contract, the piston rod is far away from the main winding drum 90, the brake on the main winding drum 90 is released, and at the moment, the main winding drum 90 rotates. When the motor 20 is not filled with oil, the first reversing valve 22 is switched to the second working state, the oil inlet of the first reversing valve 22 is communicated with the second working oil port, the first working oil port is communicated with the oil return port, hydraulic oil in the brake 21 enters the oil tank through the first working oil port and the oil return port of the first reversing valve 22, the spring in the brake 21 pushes the piston rod to extend out by utilizing the elastic force, and the piston rod is tightly held with the main winding drum 90, so that the braking of the main winding drum 90 is realized.
Further, in an embodiment of the present invention, the main winding power mechanism includes: an engine 31 and a plurality of parallel power assemblies. The engine 31 is in communication connection with the controller 10, the engine 31 can drive a plurality of power assemblies to work, the plurality of power assemblies are connected with the motor 20 through oil paths, and each power assembly is electrically connected with the controller 10.
Specifically, in the present embodiment, the motor 20 is connected to the main winding drum 90, and when the motor 20 rotates, the main winding drum 90 can be driven to rotate, so as to drive the ram to descend or ascend. The engine 31 is connected to a plurality of power assemblies for supplying power to the plurality of power assemblies, and the plurality of power assemblies supplies power to the motor 20 for driving the motor 20 to rotate. Each power assembly is electrically connected with the controller 10, and the controller 10 controls the power output by the plurality of power assemblies according to specific working conditions.
Further, as shown in fig. 3, in one embodiment of the present invention, each power assembly includes: pump package 32, pressure sensor and oil replenishment pump 33. The engine 31 is connected with the controller 10 through CAN communication, the pump group 32 is connected with the engine 31 through a transfer case, a first oil port of the pump group 32 is communicated with a first oil port of the motor 20, a second oil port of the pump group 32 is communicated with a second oil port of the motor 20, and the pump group 32 is electrically connected with the controller 10. The pressure sensor is arranged at a pressure measuring port of the pump group 32, the pressure sensor is electrically connected with the controller 10, and the oil supplementing pump 33 is connected with the engine 31 through the transfer case.
Specifically, the engine 31 is mechanically connected to the pump unit 32 coaxially, the engine 31 rotates to drive the pump unit 32 to rotate through the transfer case, and the pump unit 32 rotates to drive the motor 20 to rotate. Further, the hydraulic oil in the pump group 32 enters the motor 20 from the first oil port of the pump group 32 through the first oil port of the motor 20, flows out from the second oil port of the motor 20, and enters from the second oil port of the pump group 32. The pump set 32 is electrically connected to the controller 10, and the controller 10 can control the displacement of the pump set 32 according to specific working conditions, so as to control the rotation speed of the motor 20, and further adjust the descending or lifting speed of the ram. The pressure sensor is used to detect the pressure within the pump group 32, and particularly, the pressure sensor is provided at a pressure measuring port of the pump group 32 and transmits the detected data to the controller 10.
Specifically, during actual operation, the controller 10 calculates an output current according to the accelerator opening, the handle opening, the characteristic curves of the engine 31, the pump unit 32 and the motor 20, controls the engine 31 and the pump unit 32 to operate according to the output current, meanwhile, the engine 31 and the pump unit 32 feed back the engine speed, the engine load rate and the pressure in the pump unit 32 during operation to the controller 10, and the controller 10 adjusts the displacement of the pump unit 32 according to specific working conditions. For example, if the controller 10 calculates an output current according to the accelerator opening, the handle opening, the characteristic curves of the engine 31, the pump group 32 and the motor 20, according to the output current, the engine 31 operates at 1000 rpm, and the specific working condition at that time requires the engine 31 to operate at 2000 rpm, the controller 10 sets the rotation speed of the engine 31 to 2000 rpm, at which time the operator presses the accelerator to adjust the rotation speed of the engine 31, and when the rotation speed of the engine 31 reaches 2000 rpm, the engine 31 operates at the rotation speed. The oil supplementing pump 33 is mechanically connected with the engine 31 through the transfer case, one end of the oil supplementing pump 33 is connected with the oil tank, and an oil outlet of the oil supplementing pump 33 is connected with other oil ways of the electro-hydraulic control system of the dynamic compactor and used for replacing and supplementing oil for the electro-hydraulic control system of the dynamic compactor.
Further, as shown in fig. 3, in the embodiment of the present invention, the pump group 32 includes a second pump 321 and a second electric proportional valve 322, the second pump 321 is connected to the engine 31, the second pump 321 is connected to the motor 20 through an oil path, the second electric proportional valve 322 is connected to the second pump 321 through an oil path, and the second electric proportional valve 322 is electrically connected to the controller 10. The controller 10 controls the intensity of the current through the second electro-proportional valve 322 to control the opening degree of the second electro-proportional valve 322 to adjust the displacement of the second pump 321 to adjust the displacement of the motor 20.
When the servo system of the dynamic compactor is a hydraulic control system, the displacement of the second pump 321 and the motor 20 is a fixed value, and the displacement of the second pump 321 and the motor 20 cannot be adjusted according to a specific working condition. In the embodiment of the present invention, the displacement of the second pump 321 and the motor 20 can be adjusted according to the handle opening degree and the load factor, so that the rotation speed of the winch can be adjusted, and the control accuracy of the servo system is improved.
Alternatively, in one embodiment of the invention, the number of power assemblies is two.
Further, in the embodiment of the invention, the plurality of second pumps 321 are converged and then communicated with the motor 20 to form a closed system, and compared with a conventional open system, the closed system has the advantages that the plurality of second pumps 321 directly act on the motor 20, so that the control precision, the speed regulation range and the transmission efficiency of the electro-hydraulic control system of the dynamic compactor are improved.
In the above-described embodiment, the rotation speed of the engine 31 is controlled by a foot accelerator or a hand accelerator, and the rotation speed of the engine 31 can be controlled by depressing an accelerator pedal. Specifically, the controller 10 may set the rotation speed of the engine 31 according to the operating condition, and the operator steps on the accelerator or twists the hand accelerator to increase the rotation speed of the engine 31, and the controller 10 sets the engine to operate at the corresponding rotation speed according to the accelerator opening.
According to the electro-hydraulic control system of the dynamic compactor provided by the embodiment of the invention, the engine and the pump set are electrically connected with the controller, so that the controller can adjust the rotating speed of the engine according to specific working conditions and adjust the displacement of the pump set, the self-defined displacement output of the pump set is realized, and the control precision of the electro-hydraulic control system of the dynamic compactor is improved.
As shown in fig. 1, in an embodiment of the present invention, the electro-hydraulic control system of the dynamic compactor further includes a free hook falling control mechanism, and the free hook falling control mechanism includes: clutch 70 and first control valve group 71, first control valve group 71 and clutch 70 pass through the oil circuit and are connected.
Specifically, as shown in fig. 4, the first control group valve group 71 includes: the second reversing valve 711 is located at the first working position when the second reversing valve 711 is powered on, hydraulic oil enters from a first oil port of the second reversing valve 711 and enters the clutch 70 through a second oil port and the first electro-proportional valve 712, so that the dynamic and static friction plates of the clutch 70 are separated, and free hook falling is realized. When the second reversing valve 711 is not powered on, the second reversing valve 711 is located at the second working position, the first oil port of the second reversing valve 711 is blocked, hydraulic oil in the clutch 70 flows into the oil tank through the first electric proportional valve 712 and the second oil port and the oil return port of the second reversing valve 711, at the moment, the spring in the clutch 70 resets to push the dynamic and static friction plates to be attached, and the clutch 70 realizes braking.
As shown in fig. 1, in an embodiment of the present invention, the electro-hydraulic control system of the dynamic compactor further includes an electric control handle 60, and the electric control handle 60 is electrically connected to the controller 10. Specifically, when the electric control handle 60 is operated, the electric control handle 60 sends a signal to the controller 10, the controller 10 starts to operate, and the output current is calculated according to the characteristic curves of the engine 31, the pump group 32, and the motor 20.
It should be noted that: in the present invention, the characteristic curve refers to an intrinsic parameter of each device.
As shown in fig. 1, in an embodiment of the present invention, the electro-hydraulic control system of the dynamic compactor further includes a heat dissipation mechanism 50, and the heat dissipation mechanism 50 is electrically connected to the controller 10.
Specifically, in the present embodiment, the heat dissipation mechanism 50 includes a fan 53, and the controller 10 controls the rotation speed of the fan 53 according to the oil temperature of the electro-hydraulic control system of the dynamic compactor, so as to control the oil temperature within 70 ℃.
Further, as shown in fig. 5, in one embodiment of the present invention, the heat dissipation mechanism includes: a third directional valve 51, a first pump 52 and a fan 53. The first pump 52 is connected to the fan 53, the third direction valve 51 is connected to the first pump 52 through an oil path, and the third direction valve 51 is electrically connected to the controller 10.
Specifically, the third directional valve 51 is a two-position two-way directional valve, a first oil port of the third directional valve 51 is communicated with a first oil port of the first pump 52, a second oil port of the third directional valve 51 is communicated with an oil tank, and a second oil port of the first pump 52 is communicated with an oil inlet. The controller 10 is configured to control the third directional valve 51 to switch the working position, when the third directional valve 51 is in the first working position, both the first oil port and the second oil port of the third directional valve 51 are blocked, the first pump 52 does not rotate, and the fan 53 does not work; when the third directional valve 51 is at the second working position, the first oil port and the second oil port of the third directional valve 51 are communicated, hydraulic oil enters from the second oil port of the first pump 52, flows out from the first oil port of the first pump 52, and then enters the oil tank through the third directional valve 51, and at this time, the first pump 52 rotates to drive the fan 53 to rotate.
In one embodiment of the invention, the electro-hydraulic control system of the dynamic compactor comprises three control modes, namely a conventional control mode, a high-efficiency control mode and a micro-motion control mode.
Specifically, the engine 31 is optimally operated in the normal control mode by controlling the displacement of the pump stack 32. In the high-efficiency control mode, the displacement of the pump group 32 is increased, the displacement of the motor 20 is reduced, the main hoisting speed is increased, and the descending or lifting speed of the rammer is accelerated, so that the maximum construction efficiency is exerted. In the micro-motion control mode, the displacement of the pump group 32 is reduced, the rotating speed of the pump group 32 is reduced, the displacement of the motor 20 is increased, the rotating speed is controlled within 20% of the conventional rotating speed, and the corresponding performance of the electro-hydraulic control system of the dynamic compactor in the micro-motion of the motor 20 is improved.
As shown in FIG. 1, in one embodiment of the invention, the electro-hydraulic control system of the dynamic compactor further comprises a second control valve group 80, and the second control valve group 80 is used for being connected with other components of the dynamic compactor.
The embodiment of the invention also provides the dynamic compactor which comprises an electro-hydraulic control system of the dynamic compactor.
Specifically, the dynamic compactor includes a main winch, the main winch includes a main winch drum 90, and the dynamic compactor electro-hydraulic control system is connected to the main winch drum 90 for controlling the main winch drum 90 to rotate. Specifically, the main winding drum 90 is connected to the motor 20, and in a normal state, the motor 20 rotates to drive the main winding drum 90 to rotate, and the main winding drum 90 rotates to drive the steel wire rope to lift, so as to lift or lower the rammer. In the free-fall hook state, the main winding drum 90 is disconnected from the motor 20, and free-fall hook or free-fall hook braking is achieved under the control of the clutch 70.
According to the dynamic compactor provided by the embodiment of the invention, the controller can adjust the rotating speed of the motor according to specific working conditions by arranging the electro-hydraulic control system of the dynamic compactor, so that the operation flexibility of the dynamic compactor is improved, and the working efficiency of the dynamic compactor is further improved.
The above disclosure provides many different embodiments, or examples, for implementing different features of the invention. The components and arrangements of the specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The dynamic compactor electro-hydraulic control system is characterized by comprising:
a controller;
the main hoisting power mechanism is electrically connected with the controller, can execute corresponding actions according to action instructions sent by the controller, and can also send real-time state parameters to the controller;
the execution mechanism is electrically connected with the controller, can execute corresponding actions according to the actions sent by the controller, and can also send real-time state parameters to the controller;
the actuating mechanism is connected with the main hoisting power mechanism through a hydraulic pipeline.
2. The dynamic compactor electro-hydraulic control system of claim 1, wherein the actuator comprises:
the motor is connected with the main hoisting power mechanism through an oil way and is electrically connected with the controller;
the brake is used for braking the main hoisting drum, an on-off control module is arranged on a hydraulic oil path connected with the main hoisting power mechanism and used for controlling the on-off of the hydraulic oil path.
3. The dynamic compactor electrohydraulic control system according to claim 2, wherein the on-off control module comprises a first reversing valve, the first reversing valve has at least two working positions, and when the first reversing valve is in the first working position, the main hoisting power mechanism can supply oil to the brake; when the first reversing valve is located at the second working position, one side of the brake supplied with oil by the main hoisting power mechanism flows into the oil tank through the first reversing valve.
4. The dynamic compactor electrohydraulic control system according to claim 2, wherein the main hoisting power mechanism comprises:
the engine is in communication connection with the controller;
the engine can drive the power assemblies to work, the power assemblies are connected with the motor through oil paths, and each power assembly is electrically connected with the controller.
5. The dynamic compactor electro-hydraulic control system of claim 4, wherein each power assembly comprises:
the pump set is connected with the engine through a transfer case, a first oil port of the pump set is communicated with a first oil port of the motor, a second oil port of the pump set is communicated with a second oil port of the motor, and the pump set is electrically connected with the controller;
the pressure sensor is arranged at a pressure measuring port of the pump group and is electrically connected with the controller;
and the oil replenishing pump is connected with the engine through the transfer case.
6. The dynamic compactor electro-hydraulic control system of claim 1, further comprising a free-fall hook control mechanism, the free-fall hook control mechanism comprising:
a clutch;
and the first control valve group is connected with the clutch through an oil way.
7. The dynamic compactor electro-hydraulic control system of claim 6, wherein the first control valve set comprises: the main hoisting power mechanism comprises a second reversing valve and a first electric proportional valve, wherein the second reversing valve is provided with at least two working positions, and when the second reversing valve is positioned at a first working position, the main hoisting power mechanism can supply oil to the clutch through the second reversing valve and the first electric proportional valve; when the second reversing valve is located at the second working position, one side of the clutch, which is supplied with oil by the main hoisting power mechanism, flows into an oil tank through the first electric proportional valve and the second reversing valve.
8. The dynamic compactor electro-hydraulic control system according to claim 1, further comprising a heat dissipation mechanism electrically connected with the controller.
9. The dynamic compactor electro-hydraulic control system of claim 8, wherein the heat dissipation mechanism comprises:
a fan;
a first pump connected with the fan;
and the third reversing valve is connected with the first pump through an oil way and is electrically connected with the controller.
10. A dynamic compactor, characterized in that it comprises a dynamic compactor electrohydraulic control system according to any one of claims 1-9.
CN202210032518.8A 2022-01-12 2022-01-12 Dynamic compactor electrohydraulic control system and dynamic compactor Active CN114483678B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210032518.8A CN114483678B (en) 2022-01-12 2022-01-12 Dynamic compactor electrohydraulic control system and dynamic compactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210032518.8A CN114483678B (en) 2022-01-12 2022-01-12 Dynamic compactor electrohydraulic control system and dynamic compactor

Publications (2)

Publication Number Publication Date
CN114483678A true CN114483678A (en) 2022-05-13
CN114483678B CN114483678B (en) 2023-06-23

Family

ID=81511153

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210032518.8A Active CN114483678B (en) 2022-01-12 2022-01-12 Dynamic compactor electrohydraulic control system and dynamic compactor

Country Status (1)

Country Link
CN (1) CN114483678B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101734565A (en) * 2008-11-25 2010-06-16 徐州重型机械有限公司 Crane and winch control system thereof
JP2013167217A (en) * 2012-02-16 2013-08-29 Kobelco Cranes Co Ltd Engine control device of construction machine
CN103663221A (en) * 2013-12-10 2014-03-26 中联重科股份有限公司 Crane and system and method for controlling free hook-falling and winching thereof
CN104591022A (en) * 2014-11-26 2015-05-06 燕山大学 Automatic roller tension hydraulic control system and method of cable winding and unwinding trolley
CN109132909A (en) * 2018-10-10 2019-01-04 三汽车起重机械有限公司 winding hydraulic control system and crane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101734565A (en) * 2008-11-25 2010-06-16 徐州重型机械有限公司 Crane and winch control system thereof
JP2013167217A (en) * 2012-02-16 2013-08-29 Kobelco Cranes Co Ltd Engine control device of construction machine
CN103663221A (en) * 2013-12-10 2014-03-26 中联重科股份有限公司 Crane and system and method for controlling free hook-falling and winching thereof
CN104591022A (en) * 2014-11-26 2015-05-06 燕山大学 Automatic roller tension hydraulic control system and method of cable winding and unwinding trolley
CN109132909A (en) * 2018-10-10 2019-01-04 三汽车起重机械有限公司 winding hydraulic control system and crane

Also Published As

Publication number Publication date
CN114483678B (en) 2023-06-23

Similar Documents

Publication Publication Date Title
JP5323753B2 (en) Construction machine control equipment
CN101734565B (en) Crane and winch control system thereof
EP2524995B1 (en) Drive controller of operating machine
US6005360A (en) Power unit for the supply of hydraulic actuators
CN102741484B (en) Pump control device of hydraulic system
CN1053161C (en) Procedure for operating an elevator and elevator machinery
KR930002505B1 (en) Hydraulic lift mechanism
CN201321358Y (en) Crane hoist control system and crane
CA2799104C (en) An apparatus and method for recuperation of hydraulic energy
US7798277B2 (en) Machine retarder
CN103080551A (en) Method for controlling driving of work machine
US10359063B2 (en) Method and system for recovering and utilizing operating energy of crane, and crane
CN101535687A (en) Travel control device for hydraulic traveling vehicle
CN202575822U (en) Engineering machinery and hoisting hydraulic control system thereof
CN102491173A (en) Crane and closed type hoisting negative power control system for crane
CN203754318U (en) Crane winching hydraulic system and crane
CN114483678A (en) Dynamic compactor and electro-hydraulic control system thereof
JP2002179353A (en) Elevator braking device
JP2016530455A (en) Hydraulic accumulator and method for recovering energy in a hydraulic system
JP7160009B2 (en) Hydraulic circuit device and vehicle
CN210236937U (en) Rotary hydraulic system and crane
CN112709282A (en) Control method for giving priority to lifting of movable arm over rotation, electro-hydraulic control system and engineering machinery
CN115596038B (en) Power distribution system of loader, power distribution method of loader and loader
CN114775722B (en) Excavator and rotation brake control method and system thereof
CN110431317A (en) Oil hydraulic system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant