Wireless remote control device of paver

Abstract

The utility model discloses a paver wireless remote control device which comprises a remote controller and a receiver, the remote controller comprises a first control panel, a second control panel, a display screen, a first controller and a wireless transmitting device; a plurality of shifting rod switches are arranged on the first control panel, a plurality of rockers, a plurality of key switches and a display screen are arranged on the second control panel, each shifting rod switch and each key switch are respectively connected with the first controller, and the rockers are connected with the first controller through the connection interface conversion chip. The signal output end of the first controller is connected with the display screen; the first controller is connected with the wireless transmitting device; the receiver comprises a wireless receiving device, a second controller and a plurality of interfaces; the receiver is mounted on the paver, and the wireless transmitting device is connected with the wireless receiving device; by arranging the rocker capable of dividing gears, the steering, the walking speed and the like in the walking mode are finely controlled, and the working efficiency of the paver is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless remote control of paving machines, in particular to a wireless remote control device for paving machines. Background Art

[0002] Traditional pavers require three people to control, one person at the paver control panel and two people at the left and right side control boxes at the rear of the paver. The control system consists of a control panel and two left and right remote control boxes, and the left and right remote control boxes are connected by cables for control. Because the left and right remote control boxes are installed on the assembleable ironing board, the left and right remote control boxes must be installed and the cables must be connected before each construction of the paver. After the construction is completed, they must be dismantled accordingly. In addition, the controls on the remote control box can only be operated at a fixed position, so the operator's field of vision has certain limitations. Therefore, the remote control box only integrates a small part of the control functions of the paver. Because the paver's material feeding, material distribution, leveling, and ironing board extension and retraction are all independently controlled on the left and right, the left and right remote control boxes of the paver can only realize the control functions of the corresponding side, which is inconvenient to operate. Most of the operating functions of the paver can only be controlled on the operating console, and the current paver does not have a cab, and the paver operators are in a harsh environment of high temperature, toxicity, noise, vibration, etc. Therefore, it is extremely necessary to provide a remote control for the paver. However, in the existing paver remote control devices, since it is necessary to control the working mechanisms on the left and right sides of the paver separately, button control is mostly used, and precise control of the travel speed or steering angle cannot be achieved. Therefore, the existing remote control devices mostly have the problem of insufficient accuracy and cannot meet the control requirements of the paver. Utility Model Content

[0003] Therefore, the purpose of the utility model is to provide a wireless remote control device for a paver, which divides the control panel into two areas. By setting a joystick with divisible gears, the steering, walking speed, etc. in the walking mode are finely controlled, thereby improving the working efficiency of the paver.

[0004] In order to achieve the above-mentioned object, the utility model provides a wireless remote control device for a paving machine, comprising a remote controller and a receiver, wherein the remote controller comprises a first control panel, a second control panel, a display screen, a first controller, and a wireless transmitting device; the first control panel is provided with a plurality of lever switches, the second control panel is provided with a plurality of rockers, a plurality of key switches and a display screen, each of the lever switches and key switches is respectively connected to the first controller, the rocker is connected to the first controller via a connection interface conversion chip, and the signal output end of the first controller is connected to the display screen; the first controller is connected to the wireless transmitting device;

[0005] The receiver comprises a wireless receiving device, a second controller and a plurality of interfaces; the receiver is installed on the paving machine, and the wireless transmitting device is connected to the wireless receiving device.

[0006] Further preferably, it also includes a power supply, which includes a DC power supply module, an input end of the DC power supply module is connected to an AC / DC adapter through a DC cable, and an output end is connected to a power switch.

[0007] The power supply also includes a battery module and a switching circuit. The battery module uses a lithium battery. The switching circuit includes a diode, a MOS tube, a first pull-down resistor, and a second pull-down resistor. The cathode of the diode is connected to the +24V DC input by the DC power module and is also connected to the source of the MOS tube. The drain of the MOS tube is connected to the positive electrode of the lithium battery. The gate of the MOS tube is connected to the first pull-down resistor. The first pull-down resistor and the second pull-down resistor are connected in series, and the second pull-down resistor is grounded. The G level of the MOS tube Q1 is pulled down to the ground by R1, and the MOS tube is turned on. The battery power supplies the device through the MOS tube Q1. When the cable power is inserted, the G level of Q1 becomes a high level, and Q1 is cut off. The cable power supplies the device through the diode D1. After the cable power is unplugged, Q1 is turned on, and the power supply state is restored to battery power.

[0008] There are two joysticks, one of which is a steering control joystick and the other is a walking speed control joystick; the steering control joystick and the walking speed control joystick both use a variable resistance potentiometer of model LA42DWQ, and the output end of each joystick is respectively connected to the input end of the AD acquisition chip, and the output end of the AD acquisition chip is connected to the input end of the first controller.

[0009] There are at least 18 lever switches, and 4 key switches, which include an alarm button, a parameter button, an emergency stop button, and a debugging button.

[0010] Further preferably, the second control panel is also provided with a plurality of indicator lights, including an emergency indicator light, an alarm indicator light, a walking mode indicator light and a paving mode indicator light.

[0011] Compared with the existing paver control device in which all control buttons are concentrated together, the wireless remote control device for a paver disclosed in the present application adopts two upper and lower control panels, re-arranges the control buttons according to the walking mode and the paving mode, and sets two rockers to achieve precise control of the steering accuracy, walking direction and speed, which can assist the paver to quickly reach the work site for operation and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1The utility model is a schematic diagram of the circuit structure of the wireless remote control device for a paver.

[0013] Figure 2 The utility model is a circuit diagram of the first controller of the wireless remote control device for a paver.

[0014] Figure 3 The utility model provides a circuit schematic diagram of a switching circuit of a wireless remote control device for a paver.

[0015] Figure 4 This is a layout diagram of a control panel of a wireless remote control device for a paver provided by the utility model. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below through the accompanying drawings and specific implementation methods.

[0017] like Figure 1-4 As shown, an embodiment of the utility model provides a wireless remote control device for a paving machine, comprising a remote controller 1 and a receiver 2, wherein the housing of the remote controller is made of PVC material, and the receiver is made of metal material;

[0018] like Figure 2 As shown, the remote control includes a first control panel, a second control panel, a display screen, a first controller, and a wireless transmitter; the first control panel is provided with a plurality of lever switches, of which at least 14 lever switches are provided, including P1 for controlling the power switch; P2 for switching the paving and walking modes; P3 for supporting the formwork on the left and right sides; P4 for full lifting and full lowering; P5 for lifting and lowering the left front; P6 for lifting and lowering the right front; P7 for lifting and lowering the left rear; P8 for lifting and lowering the right rear; P9 for lifting and lowering the left material distribution; P10 for lifting and lowering the right material distribution; P11 for vibrating and raising and lowering; P12 for locking and raising and lowering; P13 for tightening and raising and lowering; P14 for raising and lowering the ceiling. Each lever switch is a three-position switch, in which the middle position is connected to a high level, and the other two positions are respectively connected to the signal input pins of the main control chip of the first controller. It should be noted that the main control chip uses STM32F103ZET6. Taking the lever switch P2 as an example, when P2 is moved forward to the first gear, it switches to the paving mode, and when it is moved backward to the second gear, it switches to the walking mode; when it is in the middle gear, it does not operate.

[0019] The second control panel is provided with a plurality of joysticks, a plurality of key switches and a display screen, each of the joystick switches and key switches is respectively connected to the first controller, the joystick is connected to the first controller via a connection interface conversion chip, and the signal output end of the first controller is connected to the display screen; the first controller is connected to a wireless transmitting device;

[0020] The receiver includes a wireless receiving device, a second controller and a plurality of interfaces; the receiver is installed on the paving machine, and the wireless transmitting device is connected to the wireless receiving device. Each interface is connected to a solenoid valve on the paving machine. When the user turns the lever switch to send a control signal to the receiver, a solenoid valve is controlled accordingly. The solenoid valve used is a conventional hydraulic solenoid valve, which is used to control the direction of hydraulic flow.

[0021] This type of solenoid valve has a closed cavity with through holes at different positions. Each hole leads to a different oil pipe. The valve is in the middle of the cavity and there are two electromagnets on both sides. When the magnet coil on the corresponding side is energized during control, the valve body will be attracted to that side. By controlling the movement of the valve body, different oil drain holes are blocked or leaked. The oil inlet hole is normally open, and the hydraulic oil will enter different oil drain pipes, and then the hydraulic shift device is driven by the oil pressure. In this way, the current of the electromagnet is controlled to control the movement of the paver.

[0022] like Figure 3 There are two joysticks, one is a steering control joystick T1, and the other is a walking speed control joystick T2; the steering control joystick and the walking speed control joystick both use a potentiometer of model LA42DWQ, and the output end of each joystick is respectively connected to the input end of the AD acquisition chip, and the output end of the AD acquisition chip is connected to the input end of the first controller. When P2 is switched to walking mode, the steering of the paver can be controlled by the steering control joystick, and the walking of the paver can be controlled by controlling the walking speed control joystick. For example, the joystick is set to the middle position as the reference position. When the joystick rotates to the left, as the rotation angle increases, the resistance gradually increases. At this time, the voltage value collected by the AD acquisition chip gradually increases. Therefore, the voltage input to the main control chip increases accordingly. According to the division of gears by the preset program in the main control chip, when it rotates to the third gear, the main control chip sends a signal to turn left to the third gear angle to the receiver through a wireless transmission device. The receiver controls the paver to adjust according to the sent adjustment angle according to the received signal. It should be noted that when the walking speed control joystick is controlled, rotating to the left is the forward gear and rotating to the right is the reverse gear. The control process is consistent with the control process of the above-mentioned steering control joystick, which will not be repeated here.

[0023] Furthermore, there are 4 key switches, including an alarm button K1, a parameter button K2, an emergency stop button K3, and a debug button K4. These key switches are connected to the main control chip respectively. Furthermore, the main control chip of the present application is also connected to an audible and visual alarm device. When the alarm button is pressed, the warning light turns on or an alarm sounds. When the parameter button is pressed, the main control chip displays the setting parameters on the display screen. The emergency button is a standby button. When the emergency button is pressed, the main control chip stops working. When the debug button is pressed, the built-in program of the main control chip can be debugged.

[0024] The second control panel is also provided with a plurality of indicator lights, which include an emergency indicator light 14 , an alarm indicator light 13 , a walking mode indicator light L1 and a paving mode indicator light 12 .

[0025] Preferably, the present application also includes a power supply, which includes a DC power supply module, an input end of the DC power supply module is connected to an AC / DC adapter via a DC cable, and an output end is connected to a power switch P1.

[0026] like Figure 4 As shown, the power supply also includes a battery module and a switching circuit. The battery module adopts a lithium battery. The switching circuit includes a diode, a MOS tube, a first pull-down resistor, and a second pull-down resistor. The cathode of the diode is connected to the +24V DC input by the DC power module and is also connected to the source of the MOS tube. The drain of the MOS tube is connected to the positive electrode of the lithium battery. The gate of the MOS tube is connected to the first pull-down resistor. The first pull-down resistor and the second pull-down resistor are connected in series, and the second pull-down resistor is grounded. The G level of the MOS tube Q1 is pulled down to the ground by R1, then the MOS tube is turned on, and the battery power is used to power the device through the MOS tube Q1. When the cable power is inserted, the G level of Q1 becomes a high level, and Q1 is cut off. The cable power is used to power the device through the diode D1. After the cable power is unplugged, Q1 is turned on, and the power supply state is restored to battery power. Therefore, the automatic switching of the power supply circuit is realized in this embodiment.

[0027] It should be noted that the control programs involved in the main control chip of this application can all adopt existing technologies. The main innovation of this application lies in the peripheral circuit structure of the main control chip and does not involve improvements to the program.

[0028] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention of the utility model.

Claims

1. A wireless remote control device for a paving machine, characterized in that: It comprises a remote controller and a receiver, wherein the remote controller comprises a first control panel, a second control panel, a display screen, a first controller, and a wireless transmitting device; the first control panel is provided with a plurality of lever switches, the second control panel is provided with a plurality of rockers, a plurality of key switches, and a display screen, each of the lever switches and key switches is respectively connected to the first controller, the rocker is connected to the first controller via a connection interface conversion chip, and the signal output end of the first controller is connected to the display screen; the first controller is connected to the wireless transmitting device; The receiver comprises a wireless receiving device, a second controller and a plurality of interfaces; the receiver is installed on the paving machine, and the wireless transmitting device is connected to the wireless receiving device.

2. The wireless remote control device for a paving machine according to claim 1, characterized in that: It also includes a power supply, which includes a DC power supply module. The input end of the DC power supply module is connected to an AC / DC adapter through a DC cable, and the output end is connected to a power switch.

3. The wireless remote control device for a paving machine according to claim 2, characterized in that: The power supply also includes a battery module and a switching circuit. The battery module uses a lithium battery. The switching circuit includes a diode, a MOS tube, a first pull-down resistor, and a second pull-down resistor. The cathode of the diode is connected to the +24V DC input by the DC power supply module and is also connected to the source of the MOS tube. The drain of the MOS tube is connected to the positive electrode of the lithium battery. The gate of the MOS tube is connected to the first pull-down resistor. The first pull-down resistor and the second pull-down resistor are connected in series, and the second pull-down resistor is grounded.

4. The wireless remote control device for a paving machine according to claim 1, characterized in that: There are two joysticks, one of which is a steering control joystick and the other is a walking speed control joystick; both the steering control joystick and the walking speed control joystick use a variable resistance potentiometer of model LA42DWQ, and the output end of each joystick is respectively connected to the input end of the AD acquisition chip, and the output end of the AD acquisition chip is connected to the input end of the first controller.

5. The wireless remote control device for a paving machine according to claim 1, characterized in that: At least 14 lever switches are provided, and 4 key switches are provided. The key switches include an alarm button, a parameter button, an emergency stop button and a debugging button.

6. The wireless remote control device for a paving machine according to claim 5, characterized in that: The second control panel is also provided with a plurality of indicator lights, including an emergency indicator light, an alarm indicator light, a walking mode indicator light and a paving mode indicator light.

Images