WO2013152575A1 - Procédé et système pour une commande de poursuite télescopique d'une flèche - Google Patents

Procédé et système pour une commande de poursuite télescopique d'une flèche Download PDF

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Publication number
WO2013152575A1
WO2013152575A1 PCT/CN2012/082345 CN2012082345W WO2013152575A1 WO 2013152575 A1 WO2013152575 A1 WO 2013152575A1 CN 2012082345 W CN2012082345 W CN 2012082345W WO 2013152575 A1 WO2013152575 A1 WO 2013152575A1
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WIPO (PCT)
Prior art keywords
telescopic
speed
latch mechanism
engine
rotational speed
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PCT/CN2012/082345
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English (en)
Chinese (zh)
Inventor
詹纯新
刘权
郭纪梅
Original Assignee
中联重科股份有限公司
湖南中联重科专用车有限责任公司
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Application filed by 中联重科股份有限公司, 湖南中联重科专用车有限责任公司 filed Critical 中联重科股份有限公司
Publication of WO2013152575A1 publication Critical patent/WO2013152575A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices

Definitions

  • the invention relates to the technical field of mechanical booms, and particularly relates to a method and a system for controlling the boom expansion and contraction of a multi-section arm of a single telescopic cylinder. Background technique
  • mechanical booms especially large construction machinery booms, generally adopt a multi-section expansion method of a single telescopic cylinder, and the working principles thereof include:
  • Step S01 the telescopic cylinder drives the latch mechanism to find the tail of the j-th telescopic arm to be extended;
  • Step S02 extending the work pin to lock the telescopic cylinder with the j-th telescopic arm, and retracting the load pin of the j-th telescopic arm inserted in the telescopic arm of the j-1th section;
  • Step S03 extending the telescopic cylinder, and the j-th telescopic arm is extended, and after extending to the destination position, the latch mechanism releases the carrier pin, and the bearing pin of the j-th telescopic arm is inserted in the j-1th section In the arm, the j-th telescopic arm and the j-1th telescopic arm are locked again to complete the stretching action of the j-th telescopic arm;
  • semi-automatic telescopic gradually becomes the mainstream technology with its advanced nature, and its control process includes: The telescopic cylinder of the telescopic mechanism drives the latch mechanism to move;
  • the electronic control unit calculates the percentage of the expansion and contraction progress of the latch mechanism according to the detected state of the latch mechanism and the length of the telescopic cylinder;
  • the electronic control unit automatically outputs a large current to the telescopic proportional valve, and prompts the operator to step on the accelerator pedal to speed up the engine to achieve the purpose of high-speed telescopic operation; when the percentage display latch mechanism is at When moving at low speed, the electronic control unit automatically outputs a small current to the telescopic proportional valve, and prompts the operator to manually reduce the engine speed to ensure the low speed operation of the telescopic mechanism.
  • the telescopic speed of the latch mechanism does not match the engine speed, and the success rate of the telescopic control is low.
  • the invention mainly solves the technical problem that the telescopic speed of the latch mechanism is not matched with the engine speed and the success rate of the telescopic control is low due to the manual control of the engine, and a boom telescopic follow-up control method and system are provided.
  • a technical solution adopted by the present invention is: Providing a boom telescopic follow-up control method, wherein the telescopic cylinder drives the latch mechanism to insert or pull the multi-section arm, including the following steps: When the telescopic cylinder drives the latch mechanism to move, it is detected in real time whether the position of the latch mechanism belongs to the high speed moving zone or the low speed moving zone; when it belongs to the high speed moving zone, the high speed moving speed required by the latching mechanism is obtained, and when it belongs to the low speed moving zone, The low speed moving speed required by the latch mechanism; the matching rotational speed N required to drive the engine of the telescopic cylinder is calculated according to the high speed moving speed or the low speed moving speed of the latch mechanism; and the matching rotational speed N is set to the current rotational speed of the engine.
  • the high-speed moving speed required to obtain the latch mechanism when belonging to the high-speed moving zone, and the step of obtaining the low-speed moving speed required by the latching mechanism when belonging to the low-speed moving zone further includes: high-speed movement according to the latching mechanism
  • the speed or the low speed moving speed outputs the actual current I value to the telescopic proportional valve to control the working state of the telescopic proportional valve; and the matching required to drive the engine of the telescopic cylinder according to the high speed moving speed or the low speed moving speed of the latch mechanism
  • the step of the speed N includes: calculating the first matching speed of the engine according to the flow demand of the telescopic proportional valve and the corresponding telescopic pump, and calculating the first engine speed according to the power demand of the telescopic proportional valve and the corresponding telescopic pump Second, the matching speed N 2 is obtained to obtain the matching speed N:
  • N Max(N l , N 2 ) x K
  • the units of the first matching rotational speed Ni, the second matching rotational speed N 2 and the matching rotational speed N are all r, and the throttle follow-up control by the telescopic pump
  • the engine drives the telescopic pump and pumps high-pressure oil to the telescopic proportional valve through a hydraulic passage
  • Q (L/min) is the rated flow of the telescopic proportional valve
  • A For the state coefficient, P (MPa) is the telescopic pressure in the hydraulic passage, n is the efficiency of the telescopic pump, W (KW) is the input power of the telescopic pump, and is obtained from the external characteristic curve of the engine according to the input power W
  • the second matching rotational speed N 2 , Max function takes a maximum value, and K is a safety factor.
  • the step of detecting whether the position of the latch mechanism is in the high speed moving zone or the low speed moving zone in real time includes: inputting the destination state of the boom and acquiring the current state of the boom Calculating a total distance required for the latch mechanism to move according to the target state and the current state of the boom, and dividing the total distance into the high speed moving area and the low speed moving area of the latch mechanism;
  • the high-speed moving speed required by the latch mechanism, in the step of obtaining the low-speed moving speed required by the latch mechanism when belonging to the low-speed moving zone includes: detecting the state of the telescopic cylinder in real time to obtain the telescopic cylinder length, according to the detected telescopic cylinder length Calculating a real-time distance that the latch mechanism has moved; determining, according to the real-time distance and the total distance, that the latch mechanism belongs to the high-speed moving zone or the low-speed moving zone, and obtaining a high-speed moving speed or a
  • N Max(N 1 , N 2 ) x K
  • N Max(N l , N 2 ) x K
  • I valve — max (mA) the maximum current value of the telescopic proportional valve.
  • the method comprises: encoding the matching rotational speed N according to a message format of an engine speed torque control command
  • the method includes: setting the rotational speed of the engine to the matching rotational speed N according to the rotational speed command.
  • a boom telescopic follow-up control system including a latch mechanism, a telescopic cylinder, an engine, a cylinder length detecting device, an electronic control unit, and an engine control unit.
  • the latch mechanism is configured to insert or pull a load pin; the telescopic cylinder is fixedly coupled to the latch mechanism for driving the latch mechanism; the engine is configured to drive the telescopic cylinder to change a telescopic cylinder length of the telescopic cylinder; the cylinder length
  • the detecting device is configured to detect the length of the telescopic cylinder in real time to determine whether the position of the latch mechanism belongs to a high speed moving area or a low speed moving area; the electronic control unit is configured to belong to a high speed moving area or a low speed according to the position of the latch mechanism When the moving zone is obtained, the high speed moving speed or the low speed moving speed required by the latch mechanism is obtained, and the matching speed N required for the engine is calculated according to the high speed moving speed or the low speed moving speed required by the latch mechanism; the engine control unit, Connected to the engine, the matching rotational speed N calculated by the electronic control unit is set to the current rotational speed of the engine.
  • the system also includes a telescopic pump and a telescopic proportional valve.
  • the telescopic pump is configured to pump high-pressure oil from the oil tank by driving the engine, the telescopic pump includes an output oil port; the expansion proportional valve includes a pressure oil port, a return oil port, a first working oil port, and a second working oil port And proportional control.
  • the pressure port is connected to the output port; the oil return port is connected to the oil tank; the first working port is connected to the rod cavity of the telescopic cylinder; the second working port
  • the utility model is configured to be connected to the rodless cavity of the telescopic cylinder; the proportional control end is electrically connected to the electronic control unit;
  • the electronic control unit outputs an actual current I value to the proportional control end according to the high speed moving speed or the low speed moving speed of the latch mechanism to change the valve opening size of the telescopic proportional valve to control the flow rate of the high pressure oil, so that the engine matches
  • the rotational speed N matches the flow rate required for the telescopic proportional valve.
  • the system further includes a telescopic pressure sensor disposed in the hydraulic passage connected to the pressure port of the telescopic proportional valve and electrically connected to the electronic control unit.
  • the telescopic pressure sensor is configured to measure the pressure in the hydraulic passage, and the electronic control unit calculates the telescopic pressure P in the hydraulic passage according to the pressure in the hydraulic passage and calculates the input power of the telescopic pump by the telescopic pressure P. , matching it to the matching speed N of the engine.
  • the system further includes a display device electrically connected to the electronic control unit for displaying a destination state and a current state of the user inputting the boom, and displaying the required movement of the latch mechanism calculated by the electronic control unit.
  • the cylinder length detecting device detects the length of the telescopic cylinder in real time and calculates a real-time distance that the latch mechanism has moved through the electronic control unit, and the electronic control unit calculates the telescopic progress according to the total distance and the real-time distance that the latch mechanism has moved. percentage.
  • the engine control unit is electrically connected to the electronic control unit via a controller area network bus, and the electronic control unit encodes the matching rotational speed N into a rotational speed command according to a message format of an engine speed torque control command and passes through the controller local area network.
  • the bus is sent to the engine control unit to set the engine speed to the matched speed N according to the speed command.
  • the electronic control unit calculates the first matching rotational speed of the engine according to the flow demand of the telescopic proportional valve and the telescopic pump, and calculates the second matching rotational speed N 2 of the engine according to the power demand of the telescopic proportional valve and the telescopic pump, Find the matching speed N:
  • the calculation method of the matching rotational speed N includes:
  • ⁇ ⁇ ( ⁇ , , ⁇ 7 ) ⁇ ⁇
  • the method for calculating the matching speed ⁇ includes: ⁇ ⁇ 3 (I V alve - I valve
  • N Max(N l , N 2 ) x K
  • the units of the first matching rotational speed Ni, the second matching rotational speed N 2 and the matching rotational speed N are all r, and the unit of the telescopic pressure P is MPa.
  • the electronic control unit obtains the second matching rotational speed N 2 from the external characteristic curve of the engine according to the input power W, K is a safety factor greater than 1, and the Max function is a maximum value, and the actual current I valve unit is mA,
  • Ivalve_min (mA) is the minimum current value of the telescopic proportional valve
  • I valve — max (mA) is the maximum current value of the telescopic proportional valve.
  • the boom telescopic follow-up control method and system of the present invention calculates the engine according to the moving speed that the latch mechanism should respectively correspond to the high-speed moving region or the low-speed moving region.
  • the required speed N is matched, and the engine speed is intelligently and accurately adjusted to match the speed N, so that the engine speed matches the expansion speed of the bolt mechanism, and the accuracy and correctness of the engine speed are improved, and the telescopic control is effectively improved.
  • the success rate so as to avoid the risk factors caused by manual manual operation errors, improve work efficiency.
  • FIG. 1 is a schematic flow chart of an embodiment of a boom telescopic follow-up control method according to the present invention
  • FIG. 2 is a schematic flow chart of another embodiment of a boom telescopic follow-up control method according to the present invention.
  • FIG. 3 is a schematic diagram showing the connection of functional modules of an embodiment of the boom telescopic follow-up control system of the present invention
  • FIG. 4 is a schematic view showing the connection mode of the working oil passage of the boom telescopic follow-up control system of the present invention.
  • FIG. 1 is a schematic flow chart of an embodiment of a boom telescopic follow-up control method according to the present invention.
  • the boom telescopic follow-up control method includes:
  • Step S101 when the telescopic cylinder drives the latch mechanism to move, detecting the position of the latch mechanism in real time is In the high-speed moving area or the low-speed moving area.
  • the user Before the step S101, the user first inputs the target state that the boom needs to be extended, and then activates the automatic telescopic switch, and the telescopic cylinder drives the latch mechanism to insert the load pin on the multi-section arm, and the multi-section arm needs to be extended.
  • the telescopic cylinder drives the latch mechanism to find the tail of the j-th telescopic arm to be extended, and extends the work pin to lock the telescopic cylinder with the j-th telescopic arm to ensure the j-th telescopic arm or the j-1th telescopic
  • the arm is in a controllable state, and then the carrier pin of the j-th telescopic arm inserted in the telescopic arm of the j-1th section is retracted. Then, the telescopic cylinder is fixed to the latch mechanism and drives the latch mechanism to move toward the destination pin hole.
  • the length of the telescopic cylinder can be detected by the cylinder length detecting device to determine whether the position of the latch mechanism belongs to the high speed moving area or the low speed moving area.
  • Step S102 obtaining a high-speed moving speed required by the latch mechanism when belonging to the high-speed moving area, and obtaining a low-speed moving speed required by the latch mechanism when belonging to the low-speed moving area.
  • the telescopic cylinder length can be read and calculated from the cylinder length detecting device by the electronic control unit, and then the moving speed required by the latch mechanism can be obtained from the pre-stored database as high speed or low speed;
  • the moving speed required by the latch mechanism can be directly calculated by the electronic control unit; understandably, the high speed moving area may include an area of acceleration, deceleration, and uniform speed, and the low speed moving area may also include an area of deceleration and uniform speed.
  • the speed of movement of the telescopic cylinder can be controlled by controlling the size of the valve of the telescopic proportional valve.
  • the telescopic proportional valve is in a full flow state, a minimum flow state, or a certain flow state between the two states, thereby changing the moving speed of the telescopic cylinder.
  • Step S103 calculating a matching rotational speed N required for driving the engine of the telescopic cylinder according to the high speed moving speed or the low speed moving speed of the latch mechanism.
  • the telescopic pump when the telescopic proportional valve is in a full flow state, a minimum flow state, or a certain flow state between the two states, the telescopic pump needs to provide a high-pressure oil that matches the flow rate into the expansion and contraction.
  • the proportional valve finally enters the rod cavity or the rodless cavity of the telescopic cylinder to change the moving speed of the telescopic cylinder. Therefore, the electronic control unit calculates the matching rotational speed N required for the engine of the telescopic pump based on the required moving speed of the latch mechanism.
  • the matching rotational speed N also needs to satisfy both the flow rate requirement and the power demand of the telescopic proportional valve and the telescopic pump.
  • the electronic control unit can directly set the rotational speed of the engine, or can be matched according to the message format of TSC1 (engine speed torque control command) in SAE-J1939 (Recommended Operating Procedure of Serial Control Communication Vehicle Network).
  • the N coded speed command is sent to the engine control unit.
  • the engine speed has been pre-processed by calculation. Between the idle speed and the maximum speed, this step is further accurately calculated to control the engine speed as the matching speed N.
  • Step S104 setting the matching rotational speed N to the current rotational speed of the engine.
  • step S104 the rotational speed of the engine is set to the matching rotational speed N by the electronic control unit or by the engine control unit according to the rotational speed command.
  • the carrier pin is released, and the bearing pin of the j-th telescopic arm is inserted into the j-1 telescopic arm to expand and contract the j-th telescopic arm and the j-1th section
  • the arm is locked again, and the stretching operation of the telescopic arm of the jth section is completed.
  • This step S101 to step S104 is repeated until the multi-section arm of the boom is expanded to the target state.
  • the boom telescopic follow-up control method calculates the matching rotational speed N required by the engine according to the moving speed of the latch mechanism, and intelligently precisely adjusts the rotational speed of the engine to the matched rotational speed N, so that the rotational speed of the engine and the latch mechanism are
  • the telescopic speed is matched to improve the accuracy and correctness of the engine speed, and the success rate of the telescopic control is effectively improved, thereby avoiding the risk factors caused by manual manual operation errors and improving work efficiency.
  • FIG. 2 is a schematic flowchart of another embodiment of the boom telescopic follow-up control method of the present invention.
  • the boom telescopic follow-up control method includes:
  • Step S200 inputting a target state of the boom and acquiring a current state of the boom, calculating a total distance required for the latch mechanism according to the target state and the current state of the boom, and dividing the total distance into the latch mechanism.
  • the high speed moving area and the low speed moving area are the high speed moving area and the low speed moving area.
  • the user first inputs the destination state in which the boom needs to be extended, and then detects the current state of the boom by the mechanism state detecting means and/or the cylinder length detecting means.
  • the telescopic cylinder drives the latch mechanism to insert the carrier pin into the multi-section arm.
  • the telescopic cylinder drives the latch mechanism to find the tail of the j-th telescopic arm to be extended.
  • Step S201 When the telescopic cylinder drives the latch mechanism to move, the real-time detecting whether the position of the latch mechanism belongs to the high speed moving area or the low speed moving area.
  • the telescopic cylinder is fixed to the latch mechanism and drives the latch mechanism to move toward the target pin hole.
  • the length of the telescopic cylinder can be detected by the cylinder length detecting device to determine whether the position of the latch mechanism belongs to the high speed moving zone or the low speed moving zone.
  • Step S202 obtaining a high-speed moving speed required by the latch mechanism when belonging to the high-speed moving area, and obtaining a low-speed moving speed required by the latch mechanism when belonging to the low-speed moving area.
  • the length of the telescopic cylinder expansion and contraction can be read and calculated from the cylinder length detecting device by the electronic control unit, and then the moving speed required for the latch mechanism can be obtained from the prestored database as high speed or low speed.
  • the moving speed required by the latch mechanism can also be directly calculated by the electronic control unit.
  • Step S203 outputting the actual current I value to the telescopic proportional valve according to the high speed moving speed or the low speed moving speed of the latch mechanism to control the working state of the telescopic proportional valve.
  • the input current of the telescopic proportional valve needs to be adjusted correspondingly to change the valve opening size of the telescopic proportional valve, so that the telescopic proportional valve is in a full flow state, a minimum flow state, or two states. A certain flow state between them, thereby changing the moving speed of the telescopic cylinder.
  • Step S204 calculating a first matching rotational speed of the engine according to a flow demand of the telescopic proportional valve and the corresponding telescopic pump, and calculating a second matching rotational speed N of the engine according to a power demand of the telescopic proportional valve and its corresponding telescopic pump 2 , to find the matching speed N.
  • the specific calculation process of the first matching rotational speed second matching rotational speed N 2 and the matching rotational speed N includes:
  • the first matching rotational speed second matching rotational speed N 2 and the matching rotational speed N are both r (trans)
  • the engine drives the telescopic pump and pumps the high-pressure oil to the telescopic proportional valve through the hydraulic passage
  • Q is the rated flow rate of the telescopic proportional valve (unit is IJmin, liters/min)
  • A is the state coefficient
  • P is the telescopic pressure (in MPa, MPa) in the hydraulic passage
  • n is the efficiency of the telescopic pump.
  • W is the input power (in KW, kilowatts) of the telescopic pump.
  • the second matching rotational speed N 2 is obtained from the external characteristic curve of the engine, the Max function takes the maximum value, and K is greater than 1 safety. coefficient.
  • N Max(N l , N 2 )xK - Equation 10
  • I valve — min is the minimum current value (in mA, mA) of the telescopic proportional valve
  • I valve — max is the maximum current value (in mA) of the telescopic proportional valve.
  • Step S205 encoding the matching rotational speed N into a rotational speed command according to a message format of the engine speed torque control command.
  • the rotational speed of the engine may be directly set by the electronic control unit, or the matching rotational speed N may be encoded into a rotational speed command to be sent to the engine control unit according to the message format requirement of TSC1 in SAE-J1939.
  • Step S206 setting the rotation speed of the engine to the matching rotation speed N according to the rotation speed command.
  • the rotational speed of the engine can be set to the matched rotational speed 1 ⁇ by the electronic control unit or by the engine control unit according to the rotational speed command.
  • the carrier pin is released, and the bearing pin of the j-th telescopic arm is inserted into the j-1 telescopic arm to expand and contract the j-th telescopic arm and the j-1th section
  • the arm is locked again, and the stretching operation of the telescopic arm of the jth section is completed.
  • it can also be a contraction action, which will not be described herein.
  • This step S200 to step S206 is repeated until the multi-section arm of the boom is expanded to the target state.
  • the boom telescopic follow-up control method calculates the matching rotational speed N required by the engine according to the moving speed of the latch mechanism, and intelligently and accurately adjusts the rotational speed of the engine to the matched rotational speed N, so that the rotational speed of the engine is
  • the telescopic speed of the latch mechanism is matched to improve the accuracy and correctness of the engine speed, and the success rate of the telescopic control is effectively improved, thereby avoiding risk factors caused by manual manual operation errors and improving work efficiency.
  • the boom telescopic follow-up control method is further described below in conjunction with the boom telescopic follow-up control system of the embodiment of the present invention, wherein the boom telescopic follow-up control system is applied to, but not limited to, a large construction machinery boom, a crane, and Wreckers, etc.
  • the boom telescopic follow-up control system includes a latch mechanism (not shown), an electronic control unit 30, and a mechanism state detecting device 31 connected to the electronic control unit 30.
  • a cylinder length detecting device 32 an engine control unit (ECU) 33, an engine 34, a telescopic proportional valve 35, a telescopic pressure sensor 36, a telescopic pump 40, a telescopic cylinder 41, and the like.
  • the electronic control unit 30 is also called an automotive electronic control unit, an electronic control unit, an automotive electronic control unit, an integrated circuit control unit, or a multi-channel control device, and is mainly used to implement a series of functions such as analysis, processing, and transmission of data.
  • the electronic control unit 30 can obtain a high-speed moving speed or a low-speed moving speed corresponding to the latch mechanism according to the position where the latch mechanism is located in the high-speed moving area or the low-speed moving area, and according to the latch mechanism.
  • the required high speed moving speed or low speed moving speed calculates the matching speed N required to drive the engine of the telescopic cylinder;
  • the mechanism state detecting device 31 is mainly used for detecting the action of the latch mechanism releasing the work pin, and also for detecting the current state of the multi-section arm of the boom, and the like, including the boom combination, the telescopic cylinder 41, the load pin, and the real-time state of the work pin.
  • the electronic control unit 30 can perform overall processing based on the data detected by the mechanism state detecting means 31.
  • the cylinder length detecting device 32 is configured to detect the telescopic cylinder length of the telescopic cylinder 41 in real time to determine whether the position of the latch mechanism belongs to the high speed moving area or the low speed moving area, and can also be used to cooperate with the mechanism state detecting device 31 to detect the multi-section arm. The current state.
  • the engine control unit 33 is similar to a conventional microcontroller, and is integrated by a microprocessor (CPU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (A/D), and shaping, driving, and the like.
  • the circuit composition is mainly operated, processed, and judged based on data of the electronic control unit 30 or information input by various sensors, and then outputs commands to control the rotational speed of the engine.
  • the present embodiment separately provides the engine control unit 33 for the engine 34.
  • the engine control unit 33 and the electronic control unit 30 may be integrated.
  • the engine control unit 33 is electrically connected to the electronic control unit 30 via a CAN (Controller Area Network) bus.
  • CAN Controller Area Network
  • the electronic control unit 30 encodes the matching rotational speed N according to the message format of the TSC1 in SAE-J1939.
  • the speed command is sent to the engine control unit 33 via the CAN bus,
  • the electronic control unit 30 calculates the first matching rotational speed of the engine 34 according to the flow demand of the telescopic proportional valve 35 and the telescopic pump 40, and calculates the second match of the engine 34 according to the power demand of the telescopic proportional valve 35 and the telescopic pump 40.
  • the speed N 2 is used to determine the matching speed N required by the engine 34:
  • the method for calculating the matching rotational speed N includes the following process:
  • N Max(N 1 , N 2 ) x K
  • the calculation method of the matching speed N includes the following: Formula 14
  • N Max(N 1 , N 2 ) x K - Equation 16
  • the units of the first matching rotational speed Ni, the second matching rotational speed N 2 and the matching rotational speed N are all r, and Q is the rated flow rate of the telescopic proportional valve 35 (unit L/rnin), q is the displacement of the telescopic pump 40 (unit: rnlJr), P is the telescopic pressure (unit MPa) in the hydraulic passage between the expansion proportional valve 35 and the telescopic pump 40, n is the telescopic pump 40
  • W is the input power (in KW) of the telescopic pump 40, and the second matching rotational speed N 2 is obtained from the external characteristic curve of the engine 34 according to the input power W, and the Max function takes the maximum value, and K is greater than 1
  • the safety factor, I va i ve — is the minimum current value (in mA) of the telescopic proportional valve 35, I valve — max is the maximum current value (in mA) of
  • the engine 34 is mainly used to power the telescopic pump 40, and the flow rate of the high-pressure oil pumped by the telescopic pump 40 is controlled by the rotational speed of the engine 34.
  • the engine 34 is used to drive the telescopic cylinder 41 to change the telescopic cylinder
  • the telescopic cylinder length of 41, and the telescopic pump 40 is driven by the engine 34 to pump high-pressure oil from the fuel tank and is sent to the telescopic proportional valve 35 through the output port of the telescopic pump 40.
  • the telescopic proportional valve 35 includes a pressure port, a return port, a first working port, a second working port, and a proportional control end Yla, Ylb. Connecting the output port of the telescopic pump 40 through the pressure port; connecting to the oil tank through the oil return port; connecting to the rod cavity of the telescopic cylinder 41 through the first working oil port; passing the second working oil The port is connected to the rodless cavity of the telescopic cylinder 41; the proportional control terminals Y1a, Y1b are electrically connected to the electronic control unit 30.
  • the electronic control unit 30 outputs the actual current I value to the proportional control terminals Y1a, Y1b according to the high speed moving speed or the low speed moving speed of the latch mechanism to control the pressure port and the oil return port of the telescopic proportional valve 35, The working state of the first working port and the second working port, and controlling the valve opening size of the telescopic proportional valve 35 to control the flow rate of the high pressure oil of the first working port or the second working port, so that the The matching rotational speed N of the engine 34 matches the amount of flow required for the telescoping proportional valve 35.
  • the specific structure of the telescopic proportional valve 35 is shown in the broken line portion, and is not described herein because it belongs to the prior art.
  • the telescopic pressure sensor 36 is disposed in the hydraulic passage of the output port of the telescopic pump 40 and the pressure port of the telescopic proportional valve 35, and is electrically connected to the electronic control unit 30, and the telescopic pressure sensor 36 is used for
  • the pressure in the hydraulic passage is measured, and the telescopic pressure P in the hydraulic passage is calculated by the electronic control unit 30, and the input power W of the telescopic pump 40 is calculated by the telescopic pressure P to match the matching rotational speed N of the engine 34. .
  • the display device 37 is electrically connected to the electronic control unit 30, and may be a touch screen or the like for displaying a destination state and a current state of the user inputting the boom, and displaying the required movement of the latch mechanism calculated by the electronic control unit 30.
  • Total distance and percentage of expansion progress The electronic control unit 30 calculates the total distance required for the latch mechanism to move according to the target state and the current state of the boom, and divides the total distance into a high-speed moving area and a low-speed moving area of the latch mechanism, and then, the cylinder
  • the length detecting device 32 detects the telescopic cylinder length in real time and calculates the real-time distance that the latch mechanism has moved by the electronic control unit 30. Further, the electronic control unit 30 according to the total distance and the real-time distance that the latch mechanism has moved The percentage of the expansion progress is calculated and displayed, so that the user can perform emergency visual operations to prevent emergencies and the like.
  • the embodiment of the present invention may further include a switch command input unit 38 and a status indicator 39.
  • the switch command input unit 38 may be used to activate an automatic telescopic switch or input various commands
  • the status indicator is 39 can display the percentage of the expansion progress or the working progress and the telescopic state of the boom telescopic follow-up control system, etc., and will not be described herein.
  • the boom telescopic follow-up control system of the embodiment of the invention may be in addition to the above structure and its corresponding working principle, Other structures including construction machinery booms and corresponding working principles are not limited insofar as they are understood by those skilled in the art.
  • the boom telescopic follow-up control system and method of the present invention can calculate the matching rotational speed N required by the engine 34 according to the moving speed of the latch mechanism, and intelligently and accurately adjust the rotational speed of the engine 34 to the matched rotational speed.
  • N matching the rotational speed of the engine 34 with the telescopic speed of the latch mechanism, improving the accuracy and correctness of the rotational speed of the engine 34, effectively improving the success rate of the telescopic control, thereby avoiding risk factors caused by manual manual operation errors.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

La présente invention concerne un procédé pour une commande de poursuite télescopique d'une flèche qui comprend les étapes suivantes : lorsqu'un cylindre télescopique actionne un mécanisme de verrou à déplacer, détecter en temps réel si la position du mécanisme de verrou se trouve dans une région de mouvement à vitesse élevée ou dans une région de mouvement à basse vitesse; dans la région de mouvement à vitesse élevée, obtenir une vitesse de déplacement élevée nécessaire pour le mécanisme de verrou, et dans une région de mouvement à basse vitesse, obtenir une vitesse de déplacement basse nécessaire pour le mécanisme de verrou; calculer une vitesse de rotation N correspondante nécessaire pour qu'un moteur entraîne le cylindre télescopique en fonction de la vitesse de déplacement élevée ou de la vitesse de déplacement basse du mécanisme de verrou; et définir la vitesse de rotation N correspondante sur une vitesse de rotation actuelle du moteur. L'invention concerne en outre un système pour la commande de poursuite télescopique d'une flèche, qui correspond à la vitesse de rotation d'un moteur et la vitesse télescopique d'un mécanisme de verrou, de façon à éviter les facteurs de risque provoqués par des erreurs d'opérations manuelles, ce qui augmente l'efficacité de travail.
PCT/CN2012/082345 2012-04-12 2012-09-28 Procédé et système pour une commande de poursuite télescopique d'une flèche WO2013152575A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113093641A (zh) * 2021-04-01 2021-07-09 湖南鸿辉科技有限公司 一种自动插销控制系统及方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102637047B (zh) * 2012-04-12 2015-01-21 中联重科股份有限公司 吊臂伸缩随动控制方法和系统
CN104340884B (zh) * 2014-08-20 2016-04-06 中联重科股份有限公司 单缸插销式伸缩臂的控制方法、设备、系统以及工程机械
CN110240072B (zh) * 2019-06-17 2020-05-15 辽宁机电职业技术学院 一种用于起重机伸缩臂的控制方法
CN112520655A (zh) * 2020-11-26 2021-03-19 湖南星邦智能装备股份有限公司 一种臂架伸缩控制方法、臂架控制系统及高空作业平台

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1243944A (zh) * 1998-05-27 2000-02-09 美国格若沃责任有限公司 用于测量多节伸缩臂长度的方法和装置
CN101440829A (zh) * 2008-12-19 2009-05-27 三一集团有限公司 一种工程机械和工程机械控制方法
JP2009242006A (ja) * 2008-03-28 2009-10-22 Ihi Corp デッキクレーンの旋回制御装置
CN201339619Y (zh) * 2009-02-06 2009-11-04 徐州重型机械有限公司 多泵工作控制器、控制系统及起重机
CN102637047A (zh) * 2012-04-12 2012-08-15 中联重科股份有限公司 吊臂伸缩随动控制方法和系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003343296A (ja) * 2002-03-20 2003-12-03 Honda Motor Co Ltd 圧縮比可変エンジン
CN1418805A (zh) * 2002-11-13 2003-05-21 徐州重型机械厂 单伸缩油缸自动控制多节臂伸缩装置
JP4031746B2 (ja) * 2003-09-26 2008-01-09 三菱重工業株式会社 大型産業車両用コントローラ
CN201154878Y (zh) * 2007-11-30 2008-11-26 三一重工股份有限公司 单伸缩油缸多节臂伸缩控制装置
CN101723262B (zh) * 2008-10-15 2011-09-14 徐州重型机械有限公司 伸缩臂插销机构控制系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1243944A (zh) * 1998-05-27 2000-02-09 美国格若沃责任有限公司 用于测量多节伸缩臂长度的方法和装置
JP2009242006A (ja) * 2008-03-28 2009-10-22 Ihi Corp デッキクレーンの旋回制御装置
CN101440829A (zh) * 2008-12-19 2009-05-27 三一集团有限公司 一种工程机械和工程机械控制方法
CN201339619Y (zh) * 2009-02-06 2009-11-04 徐州重型机械有限公司 多泵工作控制器、控制系统及起重机
CN102637047A (zh) * 2012-04-12 2012-08-15 中联重科股份有限公司 吊臂伸缩随动控制方法和系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113093641A (zh) * 2021-04-01 2021-07-09 湖南鸿辉科技有限公司 一种自动插销控制系统及方法

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