Wheel excavator control system

Abstract

The utility model belongs to the technical field of excavator control, and discloses a wheel excavator control system which comprises a display controller and a walking controller which are electrically connected with each other. The walking controller is provided with a plurality of bus pins, and the bus pins are electrically connected with the display controller and feed back the working mode or the working state to the display controller. The control mode that all the control units operate independently is improved, and the walking controller and the display controller work cooperatively to jointly complete whole machine control.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavator control and relates to a wheeled excavator control system. Background Art

[0002] With the development of society, domestic demand for wheeled excavators suitable for farmland construction, community construction, urban pipeline laying, and material handling operations is increasing. Traditional wheeled excavator control systems had independent travel control and main control functions, resulting in fragmented and uncoordinated control. Instruments could not display travel mode status, and the deployment of each control system during production was difficult and costly. Utility Model Content

[0003] In order to solve the above-mentioned wheel excavator control system problems, the utility model proposes a wheel excavator control system, which improves the control mode in which each control unit operates independently of each other, and the travel controller and the display controller work together to complete the whole machine control.

[0004] The technical solution of the utility model is: a wheeled excavator control system, comprising a display controller and a travel controller electrically connected to each other; the travel controller has a plurality of bus pins, the bus pins are electrically connected to the display controller, and the working mode or working status is fed back to the display controller.

[0005] According to the present invention, further, it also includes an engine controller electrically connected to the display controller and the travel controller;

[0006] The display controller and the engine controller both have multiple pins, and the pins of the two are connected correspondingly;

[0007] The display controller receives the start signal and transmits the signal to the engine controller to control the engine start; the travel controller controls the engine speed by detecting the voltage of the engine controller pin.

[0008] According to the utility model, further, it also includes a one-button start switch connected to the input end of the display controller, a fuel level sensor, an air filter alarm sensor, a hydraulic safety switch and a hydraulic safety solenoid valve connected to the output end of the display controller;

[0009] One-button start switch controls the start and shut down of the entire control system;

[0010] The air filter alarm sensor is used to detect air filter blockage and automatically alarm, which is displayed by the display controller; the fuel level sensor is used to detect the fuel level and output the signal to the display controller.

[0011] According to the utility model, it further includes a throttle knob, a foot throttle, a forward and reverse switch, a high and low speed switch, a mode switching switch, an accumulator pressure signal, an idle pressure switch, a cruise enable, a brake signal and a balance cylinder signal connected to the input end of the travel controller, and a forward and reverse solenoid valve, a high and low speed solenoid valve, a balance cylinder solenoid valve, a brake solenoid valve and a proportional solenoid valve connected to the output end of the travel controller.

[0012] According to the present invention, it further includes a post-processing temperature sensor, a DPF pressure difference sensor, an ambient temperature sensor, a fuel water inlet sensor and a parking brake switch connected to the input end of the engine controller, and a starting system and a preheating system connected to the output end of the engine controller.

[0013] According to the present invention, further, peripheral electrical equipment is included; the peripheral electrical equipment includes lighting indication equipment and system auxiliary equipment.

[0014] In view of the existing technology, the beneficial effects of the present invention are as follows:

[0015] The travel controller and display controller work together to feed data back to the display controller to jointly complete the control of the entire machine. The instrument always displays the travel mode status to improve the convenience of operation.

[0016] Wheeled excavators can change sites on their own, have a fast travel speed, and can quickly replace multiple devices. They have the advantages of being maneuverable, flexible, and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a block diagram of the electronic control system of a wheeled excavator control system of the present utility model;

[0018] Figure 2 The utility model is a schematic diagram of the electronic control system of a wheeled excavator control system. DETAILED DESCRIPTION

[0019] In order to make the present invention more clear and easy to understand, the following detailed description is given with reference to the accompanying drawings.

[0020] like Figure 1 As shown, an embodiment of the present utility model discloses a wheeled excavator control system, including four components: a display controller 100, a travel controller 200, an engine controller 300 and peripheral electrical equipment 400. At the same time, the sub-items of each controller are independent of each other, and at the same time, the controllers are electrically connected to each other to form a wheeled excavator control system.

[0021] Specifically, the display controller 100 itself has built-in input buttons and display functions, allowing users to interact with the buttons and understand the operating status of the entire system. The display controller 100 can also display the fuel level, allowing users to constantly monitor the fuel level. Furthermore, the display controller 100 also includes a push-button start switch 140, a fuel level sensor 130, an air filter alarm sensor 110, and a hydraulic safety switch 120, all connected to the input of the display controller 100. A hydraulic safety solenoid valve 150 is connected to the output of the display controller 100. The push-button start switch 140 controls the activation and deactivation of the entire control system. The air filter alarm sensor 110 detects air filter blockage and automatically issues an alarm, which is displayed by the display controller 100. The fuel level sensor 130 detects the fuel level and outputs a signal to the display controller 100. The display controller 100 controls its output based on these inputs.

[0022] It also includes a throttle knob, a foot throttle, a forward and reverse switch, a high and low speed switch, a mode switching switch, an accumulator pressure signal, an idle pressure switch, a cruise enable, a brake signal and a balance cylinder signal connected to the input end of the travel controller 200, and a forward and reverse solenoid valve, a high and low speed solenoid valve, a balance cylinder solenoid valve, a brake solenoid valve and a proportional solenoid valve connected to the output end of the travel controller 200.

[0023] It also includes a post-processing temperature sensor, a DPF pressure difference sensor, an ambient temperature sensor, a fuel water inlet sensor and a parking brake switch connected to the input end of the engine controller 300, and a starting system and a preheating system connected to the output end of the engine controller 300.

[0024] The battery supplies power to the starting system and the travel controller 200, the display controller 100, and the peripheral electrical equipment 400 through the battery relay; the peripheral electrical equipment 400 includes not only lighting and indicator devices such as high beams, turn signals, brake lights, platform lights, and boom lights, but also air conditioners, radios, cigarette lighters, and wiper system auxiliary equipment.

[0025] Figure 2 This is a schematic diagram of the electric control system of the present invention. Through the schematic diagram, you can understand the working principle of the whole machine and the implementation steps;

[0026] The whole machine power supply process: Battery 500 directly powers the warning lights and horn through the manual power main switch; when the one-button start gear is turned to "ON", the coil end of the battery relay is energized, the relay is attracted, and thus controls the power supply of related electrical equipment;

[0027] The whole machine starting process: When the start button of the one-touch start switch is pressed, the display controller pin 24 receives the start signal, and transmits the start signal to the engine controller pin 35 through pin 30. The engine controller controls the K5 relay coil through pins 71 and 29, thereby energizing the starter motor S terminal and realizing the start of the whole controller;

[0028] Working mode switching: After the whole machine is started, the default mode is driving mode. At this time, the speed is controlled by the foot throttle. At this time, the travel controller 20 detects the voltage of pin 20 to control the engine speed; after pressing the mode switch, the travel controller 200 pin 12 is at a high level, which is the working mode.

[0029] The speed control is mainly based on the throttle knob. At this time, the travel controller 200 detects the voltage of pin 21 to control the engine speed, and controls the flow of the proportional solenoid valve through the current size of pins 9 and 34; the travel controller 200 notifies the display controller 100 that it is in working mode through bus pins 5 and 17;

[0030] Gear switching: When the forward and reverse switch is not closed, pins 15 and 32 of the travel controller 200 are at a low level, and the travel controller 200 feeds back to the display controller through the bus that it is in a neutral state; when the forward switch is closed, pin 15 of the travel controller is at a high level, and pin 2 of the travel controller controls the forward solenoid valve to be energized, and the travel controller 200 feeds back to the display controller 100 through the bus that it is in a forward state; when the reverse switch is closed, pin 32 of the travel controller is at a high level, the reverse buzzer works, and pin 3 of the travel controller controls the reverse solenoid valve to be energized, and the travel controller feeds back to the display controller through bus pins 5 and 17 that it is in a reverse state;

[0031] High-speed and low-speed switching: When the whole machine is in the forward or reverse gear, the default mode is low-speed mode, and the travel controller controls pin 11 to output a high level. At this time, the low-speed solenoid valve is energized, and the display controller shows low-speed mode; when the high-speed and low-speed switches are turned on, pin 25 is a high level, and the travel controller pin 10 outputs a high level. At this time, the high-speed solenoid valve is energized;

[0032] Automatic idle: When the hydraulic circuit of the whole machine is in the non-operating state, the pressure of the hydraulic pilot circuit of the whole machine is lower than the threshold value (1MPa) of the pilot pressure switch, the pilot pressure switch is in the disconnected state, the travel controller pin 27 is low, the travel controller communicates with the engine controller through the bus pins 5 and 17, and the engine controller controls the speed to the idle state; the automatic idle switch virtual button in the display controller can be used to control the whole machine to turn off the automatic idle;

[0033] Cruise control: When the whole machine is in high-speed forward mode, press the cruise enable button, and the travel controller pin 14 receives a high-level pulse signal. At this time, release the accelerator pedal and the whole machine is in a constant speed. When the accelerator or brake intervenes in the control, when the voltage of the travel controller pin 20 changes, or when the pin 26 is high, the travel controller 200 exits the cruise control mode.

[0034] Machine power-off process: When the one-button start is turned to the "OFF" position, the coil end of the battery relay is de-energized. At this time, the relay is disconnected from the energized state, thereby controlling the power-off of related electrical equipment. At this time, the whole machine is powered off and shut down.

Claims

1. A wheeled excavator control system, characterized in that: It includes a display controller and a travel controller electrically connected to each other; the travel controller has a plurality of bus pins, the bus pins are electrically connected to the display controller, and the working mode or working status is fed back to the display controller; Also included is an engine controller electrically connected to the display controller and the travel controller; The display controller and the engine controller both have multiple pins, and the pins of the two are connected correspondingly; The display controller receives the start signal and transmits the signal to the engine controller to control the engine to start; The travel controller controls the engine speed by detecting the voltage of the engine controller pin; It also includes a one-button start switch connected to the input end of the display controller, a fuel level sensor, an air filter alarm sensor, a hydraulic safety switch and a hydraulic safety solenoid valve connected to the output end of the display controller; One-button start switch controls the start and shut down of the entire control system; The air filter alarm sensor is used to detect air filter blockage and automatically alarm, which is displayed by the display controller; the fuel level sensor is used to detect the fuel level and output the signal to the display controller.

2. A wheel excavator control system according to claim 1, characterized in that: It also includes a throttle knob, foot throttle, forward and reverse switch, high and low speed switch, mode switch, accumulator pressure signal, idle pressure switch, cruise enable, brake signal and balance cylinder signal connected to the input end of the travel controller, and a forward and reverse solenoid valve, high and low speed solenoid valve, balance cylinder solenoid valve, brake solenoid valve and proportional solenoid valve connected to the output end of the travel controller.

3. A wheel excavator control system according to claim 1, characterized in that: It also includes a post-processing temperature sensor, a DPF pressure difference sensor, an ambient temperature sensor, a fuel water inlet sensor and a parking brake switch connected to the input end of the engine controller, and a starting system and a preheating system connected to the output end of the engine controller.

4. A wheel excavator control system according to claim 1, characterized in that: It also includes peripheral electrical equipment; peripheral electrical equipment includes lighting indication equipment and system auxiliary equipment.

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