WO2018032875A1 - Manual variable displacement pump control system - Google Patents

Manual variable displacement pump control system Download PDF

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Publication number
WO2018032875A1
WO2018032875A1 PCT/CN2017/089672 CN2017089672W WO2018032875A1 WO 2018032875 A1 WO2018032875 A1 WO 2018032875A1 CN 2017089672 W CN2017089672 W CN 2017089672W WO 2018032875 A1 WO2018032875 A1 WO 2018032875A1
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Prior art keywords
controller
push rod
electric push
manual variable
variable pump
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PCT/CN2017/089672
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French (fr)
Chinese (zh)
Inventor
施伟斌
田林春
许祥虎
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南京英达公路养护车制造有限公司
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Application filed by 南京英达公路养护车制造有限公司 filed Critical 南京英达公路养护车制造有限公司
Priority to KR1020177033921A priority Critical patent/KR20180034316A/en
Publication of WO2018032875A1 publication Critical patent/WO2018032875A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves

Definitions

  • the invention relates to a control system for a manual variable pump.
  • the current manual variable pump reversing and flow control is composed of the handle control and the connection of the flexible shaft, so that the flexible shaft drives the reversing valve, and the control unit is composed of the control handle mechanism and the connecting flexible shaft portion.
  • the technical problem to be solved by the present invention is to overcome the technical defects existing in the prior art, and provide a manual variable pump control system capable of precise speed regulation, reversing, removing the soft shaft and the handle control, using the electric push rod and linkage
  • the mechanism adjusts the direction and flow of the manual variable pump.
  • the manual variable pump control system of the present invention is composed of a regulator, a controller, an electric push rod and a manual variable pump.
  • the regulator is composed of a regulating resistor for adjusting the opening degree of the manual variable pump to control the manual variable pump flow, and a reversing switch for controlling the direction of the manual variable pump reversing valve.
  • the regulating resistor of the controller is connected to the regulating resistor.
  • the regulating resistor of the controller outputs a high-level voltage DC+5V to the regulating resistor. After adjusting the resistor, the regulating resistor outputs an analog signal of DC 0-5V voltage.
  • the controller is analog to the signal receiving port.
  • the reversing switch outputs two switching signals DC 24V forward and backward, which are respectively connected to the two signal input ports of the controller.
  • the signal output of the controller directly drives the motor of the electric push rod and can accurately feedback the drive current to control the forward and reverse rotation speed of the motor.
  • the controller outputs a DC+5V voltage to the control feedback component in the electric push rod.
  • the control feedback component in the electric push rod then outputs an analog signal of DC 0-5V voltage to the controller receiving port.
  • the electric push rod is connected to the valve stem of the reversing valve of the manual variable pump through the linkage mechanism.
  • the controller adopts CAN bus controller, the control is reliable and accurate, and the direction flow regulating mechanism has a simple structure and is not easy to be damaged.
  • the manual variable pump control system of the invention adopts a CAN bus controller, uses an electric push rod to control the movement of the reversing valve, is not easy to be damaged, has low maintenance cost in the later stage, and has a simple structure, simple operation, easy to use, and low requirements for users.
  • the status of the electric push rod can be sent to the upper computer through bus communication, and the state of the manual variable pump can be observed in real time.
  • the device is significantly modified by the use of the existing manual variable pump system, and the user's labor intensity and work efficiency are significantly improved.
  • FIG. 1 Schematic diagram of the manual variable pump control system of the present invention.
  • Figure 2 is a schematic diagram of the electronic control circuit of the manual variable pump control system of the present invention.
  • Figure 3 Schematic diagram of the characteristics of the manual variable pump reversing valve.
  • a manual variable pump control system is composed of a regulator 1, a controller 2, an electric push rod 3, and a manual variable pump 6.
  • the regulator is composed of a regulating resistor 4 for regulating the flow of the manual variable pump and a reversing switch 5 for controlling the direction of the manual variable pump reversing valve.
  • the controller 2 adopts a CAN bus controller, and its function is to perform arithmetic processing according to the feedback signals of the adjusting resistor 4, the commutating switch 5 and the electric push rod 3, and has achieved the purpose of controlling the forward and reverse rotation and the stroke of the motor in the push rod 3 .
  • the controller has a regulating resistor power interface and an analog signal receiving port.
  • the power of the adjusting resistor 4 is connected to the regulating resistor power interface of the controller 2, and the output signal of the adjusting resistor 4 is connected to the analog signal receiving port of the controller 2.
  • the forward signal output and the reverse signal output of the changeover switch 5 are respectively connected to the two signal input ports of the controller 2.
  • the signal output of the controller 2 is corresponding to the corresponding interface of the electric push rod 3.
  • the electric push rod 3 is connected to the valve stem of the switching valve 8 of the manual variable pump via the linkage mechanism 7.
  • the main power switch is turned on, the regulator 1 and the controller 2 are powered, and the program inside the controller 2 is first initialized.
  • the control feedback component in the electric push rod outputs a signal of DC 0-5V voltage to the receiving port of the controller 2, and the controller 2 processes the signal according to the received signal, and outputs a signal to the electric push rod 3 after the processing is completed.
  • the action of the electric push rod 3 drives the link mechanism 7 to return the reversing valve block 8 to the neutral state at a relatively fast speed.
  • the forward/reverse switch signal output from the changeover switch 5 and the analog signal output from the adjustment resistor 4 are transmitted to the controller 2, and the controller 2 performs arithmetic processing according to the received information, and the controller is processed after the process is completed.
  • the output forward/reverse signal is transmitted to the electric push rod 3 for controlling the forward or reverse rotation and the rotational speed of the motor in the electric push rod 3.
  • the control feedback element in the electric push rod 3 controls the stroke amount and the rotational speed of the electric push rod 3 according to the signal output from the controller 2, and the linkage mechanism 7 operates as the electric push rod 3 operates, and the linkage mechanism 7 drives the manual variable pump 6
  • the upper reversing valve 8 operates to achieve the direction and flow rate control purposes.
  • the operating range and direction of the reversing valve 8 are controlled by the electric push rod 3.
  • the control principle is determined by the characteristics of the manual variable pump.
  • the reversing valve 8 is in the neutral state.
  • the electric push rod 3 is also In the middle position, the controller 2 outputs a voltage signal of +5V to the control feedback component in the electric push rod 3, and the electric push rod 3 also feeds back a signal to the controller 2, and the controller 2 performs internal calculation to determine the electric push rod 3 State, such as not outputting a signal to the neutral controller to return the electric actuator to the neutral position.
  • the commutation switch 5 in the regulator is rotated to the forward state,
  • the commutation switch 5 outputs a high-level forward signal to the controller 2, and after receiving the internal operation of the signal, the controller 2 outputs a high-level signal at the controller output forward interface (the drive voltage and current are based on the variable pump)
  • the current value changes with the control handle setting value)
  • the controller outputs a low level output 0V, so that the motor in the electric push rod 3 is forwarded;
  • the manual variable pump is required to retreat, the commutation in the regulator
  • the switch 5 is rotated to the retracted state, and the reversing switch 5 outputs a high-level back signal to be sent to the controller 2.
  • the controller 2 After receiving the internal operation of the signal, the controller 2 outputs a high-level signal at the controller output back interface (the driving thereof) The voltage and current vary according to the current value of the variable pump and the set value of the control handle.
  • the controller outputs a low level 0V to reverse the motor in the electric push rod 3, and then slowly rotates the adjustment resistor in the regulator. 4.
  • the regulating resistor 4 outputs a 0-5V analog value to the controller 2, and the controller 2 processes according to the information sent by the adjusting resistor 4, and outputs a high level signal to the electric push rod 3 after the processing is completed.
  • Feedback control element controlling the electric push rod stroke amount of 3.
  • the controller 2 controls the electric push rod 3 to operate according to the characteristics of the manual variable pump and the feedback information of the electric push rod 3, and changes the direction and opening degree of the reversing valve 8, thereby realizing the direction and flow control of the manual variable pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Provided is a manual variable displacement pump control system, comprising a regulator (1), a controller (2), an electric push rod (3), and a manual variable displacement pump (6). The regulator (1) comprises a regulating resistor (4) and a change-over switch (5). A regulating resistor power interface of the controller (2) is connected to the regulating resistor (4). An output of the regulating resistor (4) is connected to an analog signal receiving port of the controller (2). A forward signal output and a backward signal output of the change-over switch (5) are connected to two signal input ports of the controller (2), respectively. A signal output of the controller (2) is connected to a corresponding interface of the electric push rod (3). The electric push rod (3) is connected to a valve stem of a reversing valve (8) of the manual variable displacement pump (6). The control system is not easily damaged, and has low maintenance costs, a simple structure, and easy operation.

Description

一种手动变量泵控制系统Manual variable pump control system 技术领域Technical field
本发明涉及一种手动变量泵的控制系统。The invention relates to a control system for a manual variable pump.
背景技术Background technique
现行手动变量泵换向和流量控制是使用手柄控制和连接软轴组成，让软轴带动换向阀，其控制单元由控制手柄机构、连接软轴部分组成。在使用过程中控制不精准，对使用者的要求较高，劳动强度大。操作不简便、软轴易损坏使用寿命短、影响设备正常使用、后期维修成本高。The current manual variable pump reversing and flow control is composed of the handle control and the connection of the flexible shaft, so that the flexible shaft drives the reversing valve, and the control unit is composed of the control handle mechanism and the connecting flexible shaft portion. Inaccurate control during use, high requirements for users, and high labor intensity. The operation is not simple, the flexible shaft is easy to damage, the service life is short, the equipment is normally used, and the maintenance cost is high in the later stage.
发明内容Summary of the invention
本发明所要解决的技术问题在于，克服现有技术存在的技术缺陷，提供了一种手动变量泵控制系统，能精准调速、换向，去除了软轴和手柄控制，用电动推杆和联动机构来调节手动变量泵的方向和流量。The technical problem to be solved by the present invention is to overcome the technical defects existing in the prior art, and provide a manual variable pump control system capable of precise speed regulation, reversing, removing the soft shaft and the handle control, using the electric push rod and linkage The mechanism adjusts the direction and flow of the manual variable pump.
本发明手动变量泵控制系统，由调节器、控制器、电动推杆以及手动变量泵组成。所述调节器由调节电阻和换向开关构成，调节电阻用于调节手动变量泵的阀心的开启度来控制手动变量泵流量，换向开关用于控制手动变量泵换向阀的方向。控制器的调节电阻电源接口接调节电阻，控制器的调节电阻电源接口输出一个高电平电压DC+5V给调节电阻，经过调节电阻调节后，调节电阻输出一个DC 0—5V电压的模拟信号到控制器模拟信号接收端口上。换向开关输出前进和后退两个开关量信号DC 24V，分别接在控制器的两个信号输入端口上。控制器的信号输出直接驱动电动推杆的电机，并能准确反馈驱动电流,用来控制电机的正反转和转动速度。控制器输出一个DC+5V电压给电动推杆内的控制反馈元件，电动推杆内的控制反馈元件然后输出一个DC 0—5V电压的模拟信号到控制器接收端口上。电动推杆通过联动机构与手动变量泵的换向阀的阀杆连。控制器采用CAN总线控制器，控制可靠精确，方向流量调节机构结构简单、不易损坏。The manual variable pump control system of the present invention is composed of a regulator, a controller, an electric push rod and a manual variable pump. The regulator is composed of a regulating resistor for adjusting the opening degree of the manual variable pump to control the manual variable pump flow, and a reversing switch for controlling the direction of the manual variable pump reversing valve. The regulating resistor of the controller is connected to the regulating resistor. The regulating resistor of the controller outputs a high-level voltage DC+5V to the regulating resistor. After adjusting the resistor, the regulating resistor outputs an analog signal of DC 0-5V voltage. The controller is analog to the signal receiving port. The reversing switch outputs two switching signals DC 24V forward and backward, which are respectively connected to the two signal input ports of the controller. The signal output of the controller directly drives the motor of the electric push rod and can accurately feedback the drive current to control the forward and reverse rotation speed of the motor. The controller outputs a DC+5V voltage to the control feedback component in the electric push rod. The control feedback component in the electric push rod then outputs an analog signal of DC 0-5V voltage to the controller receiving port. The electric push rod is connected to the valve stem of the reversing valve of the manual variable pump through the linkage mechanism. The controller adopts CAN bus controller, the control is reliable and accurate, and the direction flow regulating mechanism has a simple structure and is not easy to be damaged.
本发明手动变量泵控制系统，采用CAN总线控制器，利用电动推杆来控制换向阀动作，不易损坏，后期的维护成本低，并且结构简单、操作简便，容易上手，对使用者的要求低，可以通过总线通讯，将电动推杆的状态发送到上位机，可以实时观察手动变量泵的状态。本装置通过在现有的手动变量泵系统中改造使用，使用者的劳动强度及工作效率都有显著的改善。The manual variable pump control system of the invention adopts a CAN bus controller, uses an electric push rod to control the movement of the reversing valve, is not easy to be damaged, has low maintenance cost in the later stage, and has a simple structure, simple operation, easy to use, and low requirements for users. The status of the electric push rod can be sent to the upper computer through bus communication, and the state of the manual variable pump can be observed in real time. The device is significantly modified by the use of the existing manual variable pump system, and the user's labor intensity and work efficiency are significantly improved.
附图说明 DRAWINGS
图一、本发明手动变量泵控制系统示意图。Figure 1. Schematic diagram of the manual variable pump control system of the present invention.
图二、本发明手动变量泵控制系统电控电路示意图。Figure 2 is a schematic diagram of the electronic control circuit of the manual variable pump control system of the present invention.
图三、手动变量泵换向阀特性示意图。Figure 3. Schematic diagram of the characteristics of the manual variable pump reversing valve.
具体实施方式detailed description
下面结合实施例和附图，对本发明作进一步详细说明。The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.
实施例：如图1、2所示，本发明提出的一种手动变量泵控制系统，由调节器1、控制器2、电动推杆3以及手动变量泵6组成。所述调节器由调节电阻4和换向开关5构成，调节电阻用于调节手动变量泵的流量，换向开关用于控制手动变量泵换向阀的方向。控制器2采用CAN总线控制器，其作用是根据调节电阻4、换向开关5和电动推杆3反馈信号，进行运算处理，已达到控制推动推杆3内电机的正反转和行程的目的。控制器带有调节电阻电源接口和模拟信号接收端口，调节电阻4的电源接在控制器2的调节电阻电源接口，调节电阻4的输出信号接在控制器2的模拟信号接收端口上。换向开关5的前进信号输出和后退信号输出分别接在控制器2的两个信号输入端口上。控制器2的信号输出与电动推杆3的相应接口。电动推杆3通过联动机构7与手动变量泵的换向阀8的阀杆连接。Embodiment: As shown in FIG. 1 and FIG. 2, a manual variable pump control system proposed by the present invention is composed of a regulator 1, a controller 2, an electric push rod 3, and a manual variable pump 6. The regulator is composed of a regulating resistor 4 for regulating the flow of the manual variable pump and a reversing switch 5 for controlling the direction of the manual variable pump reversing valve. The controller 2 adopts a CAN bus controller, and its function is to perform arithmetic processing according to the feedback signals of the adjusting resistor 4, the commutating switch 5 and the electric push rod 3, and has achieved the purpose of controlling the forward and reverse rotation and the stroke of the motor in the push rod 3 . The controller has a regulating resistor power interface and an analog signal receiving port. The power of the adjusting resistor 4 is connected to the regulating resistor power interface of the controller 2, and the output signal of the adjusting resistor 4 is connected to the analog signal receiving port of the controller 2. The forward signal output and the reverse signal output of the changeover switch 5 are respectively connected to the two signal input ports of the controller 2. The signal output of the controller 2 is corresponding to the corresponding interface of the electric push rod 3. The electric push rod 3 is connected to the valve stem of the switching valve 8 of the manual variable pump via the linkage mechanism 7.
总电源开关打开，调节器1和控制器2得电，控制器2内部的程序首先进行初始化，这时如换向阀块8不在中位，通过联动机构7导致电动推杆3也不在中位，这时电动推杆内的控制反馈元件输出一个DC 0—5V电压的信号到控制器2接收端口上，控制器2根据接收的信号进行处理后，处理完成后输出一个信号给电动推杆3，电动推杆3动作带动联杆机构7使换向阀块8以较快速度回至中位状态。The main power switch is turned on, the regulator 1 and the controller 2 are powered, and the program inside the controller 2 is first initialized. At this time, if the reversing valve block 8 is not in the neutral position, the electric push rod 3 is not in the middle position by the linkage mechanism 7. At this time, the control feedback component in the electric push rod outputs a signal of DC 0-5V voltage to the receiving port of the controller 2, and the controller 2 processes the signal according to the received signal, and outputs a signal to the electric push rod 3 after the processing is completed. The action of the electric push rod 3 drives the link mechanism 7 to return the reversing valve block 8 to the neutral state at a relatively fast speed.
手动变量泵工作时，将换向开关5输出的前进/后退开关量信号和调节电阻4输出的模拟信号传输到控制器2里，控制器2根据接收的信息进行运算处理，处理完成后控制器2输出前进/后退信号传送给电动推杆3，用来控制电动推杆3内电机的正转或反转和转速。电动推杆3内的控制反馈元件，根据控制器2输出的信号来控制电动推杆3的行程量和转速，联动机构7随着电动推杆3动作而动作，联动机构7带动手动变量泵6上的换向阀8动作，以达到方向、流速控制目的。When the manual variable pump is working, the forward/reverse switch signal output from the changeover switch 5 and the analog signal output from the adjustment resistor 4 are transmitted to the controller 2, and the controller 2 performs arithmetic processing according to the received information, and the controller is processed after the process is completed. 2 The output forward/reverse signal is transmitted to the electric push rod 3 for controlling the forward or reverse rotation and the rotational speed of the motor in the electric push rod 3. The control feedback element in the electric push rod 3 controls the stroke amount and the rotational speed of the electric push rod 3 according to the signal output from the controller 2, and the linkage mechanism 7 operates as the electric push rod 3 operates, and the linkage mechanism 7 drives the manual variable pump 6 The upper reversing valve 8 operates to achieve the direction and flow rate control purposes.
换向阀8的动作范围和方向由电动推杆3控制，其控制原理是受手动变量泵的特性所决定，刚开始时换向阀8是在中位状态，这时的电动推杆3也处于中间位置，控制器2输出+5V的电压信号给电动推杆3内的控制反馈元件，电动推杆3也反馈一个信号给控制器2，控制器2进行内部运算，判断电动推杆3的状态，如不在中位控制器输出一个信号让电动推杆回至中位。如需要手动变量泵前进动作时，将调节器中的换向开关5旋至前进状态， 换向开关5输出一个高电平前进信号发送到控制器2中，控制器2接收到信号内部运算后，在控制器输出前进接口输出一个高电平信号(其驱动电压和电流根据变量泵的当前值与控制手柄设定值而变化),控制器输出后退输出一个低电平0V，使电动推杆3内的电机正传；如需要手动变量泵后退动作时，将调节器中的换向开关5旋至后退状态，换向开关5输出一个高电平后退信号发送到控制器2中，控制器2接收到信号内部运算后，在控制器输出后退接口输出一个高电平信号(其驱动电压和电流根据变量泵的当前值与控制手柄设定值而变化),控制器输出前进输出一个低电平0V，使电动推杆3内的电机反转，再缓慢旋转调节器中的调节电阻4，调节电阻4输出一个0—5V模拟值给控制器2,控制器2根据调节电阻4所发送的信息进行处理，处理完成后输出一个高电平信号给电动推杆3内的控制反馈元件,控制电动推杆3的行程量。控制器2根据手动变量泵的特性和电动推杆3的反馈信息控制电动推杆3做动作，改变换向阀8的方向和开启度，实现手动变量泵的方向和流量控制。 The operating range and direction of the reversing valve 8 are controlled by the electric push rod 3. The control principle is determined by the characteristics of the manual variable pump. At the beginning, the reversing valve 8 is in the neutral state. At this time, the electric push rod 3 is also In the middle position, the controller 2 outputs a voltage signal of +5V to the control feedback component in the electric push rod 3, and the electric push rod 3 also feeds back a signal to the controller 2, and the controller 2 performs internal calculation to determine the electric push rod 3 State, such as not outputting a signal to the neutral controller to return the electric actuator to the neutral position. If the manual variable pump forward action is required, the commutation switch 5 in the regulator is rotated to the forward state, The commutation switch 5 outputs a high-level forward signal to the controller 2, and after receiving the internal operation of the signal, the controller 2 outputs a high-level signal at the controller output forward interface (the drive voltage and current are based on the variable pump) The current value changes with the control handle setting value), the controller outputs a low level output 0V, so that the motor in the electric push rod 3 is forwarded; if the manual variable pump is required to retreat, the commutation in the regulator The switch 5 is rotated to the retracted state, and the reversing switch 5 outputs a high-level back signal to be sent to the controller 2. After receiving the internal operation of the signal, the controller 2 outputs a high-level signal at the controller output back interface (the driving thereof) The voltage and current vary according to the current value of the variable pump and the set value of the control handle. The controller outputs a low level 0V to reverse the motor in the electric push rod 3, and then slowly rotates the adjustment resistor in the regulator. 4. The regulating resistor 4 outputs a 0-5V analog value to the controller 2, and the controller 2 processes according to the information sent by the adjusting resistor 4, and outputs a high level signal to the electric push rod 3 after the processing is completed. Feedback control element, controlling the electric push rod stroke amount of 3. The controller 2 controls the electric push rod 3 to operate according to the characteristics of the manual variable pump and the feedback information of the electric push rod 3, and changes the direction and opening degree of the reversing valve 8, thereby realizing the direction and flow control of the manual variable pump.

Claims (2)

  1. 一种手动变量泵控制系统，由调节器、控制器、电动推杆以及手动变量泵组成，所述调节器由调节电阻和换向开关构成；其特征是：所述控制器的调节电阻电源接口接调节电阻，调节电阻的模拟信号输出接控制器模拟信号接收端口；换向开关的前进信号输出和后退信号输出分别接在控制器的两个信号输入端口上；控制器连接电动推杆的相应接口，电动推杆通过联动机构与手动变量泵的换向阀的阀杆连接。A manual variable pump control system consisting of a regulator, a controller, an electric push rod and a manual variable pump, the regulator being composed of a regulating resistor and a reversing switch; characterized in that: the regulating resistor power interface of the controller Connect the adjusting resistor, adjust the analog signal output of the resistor to the analog signal receiving port of the controller; the forward signal output and the back signal output of the commutating switch are respectively connected to the two signal input ports of the controller; the corresponding connection of the controller to the electric push rod The interface and the electric push rod are connected to the valve stem of the reversing valve of the manual variable pump through the linkage mechanism.
  2. 根据权利要求1所述手动变量泵控制系统，其特征是：所述控制器采用CAN总线控制器。 The manual variable pump control system of claim 1 wherein said controller employs a CAN bus controller.
PCT/CN2017/089672 2016-08-16 2017-06-23 Manual variable displacement pump control system WO2018032875A1 (en)

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