A Method for Interlocking Control of Driving and Operation of a New Energy Aerial Work Platform

Abstract

The present invention discloses a method for interlocking control of driving and operation of a new energy aerial work vehicle. The central processing unit determines whether the working vertical outriggers are stressed through the working vertical outrigger detection switch. If stressed, the upper body works and the chassis is locked. If not stressed, the state of the instrument power switching demand switch is judged. If the instrument power switching demand switch is turned on, the upper body works and the chassis is locked. If the instrument power switching demand switch is turned off, it is judged whether there is a switching action from the off state to the on state of the instrument power switching demand switch. If there is an on action, the upper body works and the chassis is locked. If there is no on action, it is judged whether the upper body motor is working. If the upper body motor is working, the upper body works and the chassis is locked. If the upper body motor is not working, the chassis works and the upper body is locked, which not only ensures the operation safety of the operators but also minimizes the energy consumption of the whole vehicle to the greatest extent.

Description

Technical Field

[0001] The present invention belongs to the field of special equipment and aerial work vehicles, and particularly relates to a method for interlocking control of driving and operation of a new energy aerial work vehicle. Background Art

[0002] With the rapid development of the market economy, as a professional aerial work equipment, aerial work vehicles have developed and been applied rapidly in various industries due to their advantages such as efficiency, cost, and safety. The power systems of existing domestic aerial vehicles are divided into two paths: the chassis and the upper body. That is, the power system of the chassis provides power for vehicle driving, and the power system of the upper body equipment provides power for operation. The two systems are isolated from each other and do not affect each other, which not only ensures operation safety but also reduces energy consumption.

[0003] In the patent with the patent number CN201920184008.6, by designing the electrical circuit, when one power source provides power for the aerial work vehicle, the other power sources automatically cut off the output. Although this method can achieve power interlocking, it requires adding hardware circuit arrangements such as spring relays. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a method for interlocking control of driving and operation of a new energy aerial work vehicle.

[0005] The specific solution is as follows:

[0006] A method for interlocking control of driving and operation of a new energy aerial work vehicle, including an instrument power switching demand switch, a working vertical leg detection switch, a central processor, a chassis, and an upper body. The central processor determines the interlocking control requirements for the upper body and the chassis according to the signals of the instrument power switching demand switch or the working vertical leg detection switch, and controls the interlocking switching between the chassis and the upper body;

[0007] The interlocking control method includes the following steps:

[0008] S1): The central processor determines whether the working vertical legs are stressed through the working vertical leg detection switch. If the working vertical legs are stressed, the central processor drives the upper body to work and locks the chassis at the same time; if the working vertical legs are not stressed, it proceeds to step S2);

[0009] S2): The central processor determines the state of the instrument power switching demand switch. If the instrument power switching demand switch is in the open state, the central processor drives the upper body to work and locks the chassis at the same time; if the instrument power switching demand switch is in the closed state, it proceeds to step S3);

[0010] S3): The central processing unit determines whether there is a switching action of the instrument power switching demand switch from the off state to the on state. If there is an action of the instrument power switching demand switch switching from off to on, the central processing unit drives the upper installation to work and locks the chassis at the same time. If there is no action of the instrument power switching demand switch switching from off to on, it proceeds to step S4).

[0011] S4): The central processing unit determines whether the upper installation motor is in the working state. If the upper installation motor is in the working state, the central processing unit drives the upper installation to work and locks the chassis at the same time. If the upper installation motor is in the non - working state, the central processing unit drives the chassis to work and locks the upper installation at the same time.

[0012] The instrument power switching demand switch is used to detect the driver's operation demand for power switching, and the signal of the instrument power switching demand switch is directly transmitted into the central processing unit; when the vehicle is in the initial start state and the instrument power switching demand switch is in the off state, the chassis works and the upper installation is locked. When the instrument power switching demand switch is in the on state, the chassis is locked and the upper installation starts to work.

[0013] The operation vertical outrigger detection switch is used to detect whether the operation vertical outriggers are stressed to judge the working state of the vehicle, and the signal of the operation vertical outrigger detection switch is directly transmitted into the central processing unit; when at least one of the operation vertical outriggers extends and is stressed, the central processing unit no longer responds to the switching state of the instrument power switching demand switch. At this time, the chassis is locked and the upper installation is in the working state.

[0014] In step S4), the working state or non - working state of the upper installation motor is judged according to the rotation speed of the upper installation motor. If the upper installation motor has no rotation speed, the upper installation motor is in the non - working state. If the upper installation motor has a rotation speed, the upper installation motor is in the working state.

[0015] The method for the central processing unit to drive the upper installation to work and lock the chassis at the same time is to control the chassis to park and request the chassis power source to be turned off at the same time; after the chassis feedbacks that the engine or motor has been turned off, control the upper installation power source to be turned on, and the motor enters the working mode to provide hydraulic power; when all the operating outriggers are extended and stressed, control the chassis to turn off the unnecessary electronic control components.

[0016] The method for the central processing unit to drive the chassis to work and lock the upper installation at the same time is to control the chassis to turn on the turned - off electronic control components and request the upper installation power source to be turned off at the same time; after the upper installation feedbacks that the motor has been turned off, control the chassis power source to be turned on, enter the working mode, and the parking state is released by the driver's operation.

[0017] The interlock switching between the chassis and the upper installation is carried out through the CAN network for interaction.

[0018] The present invention discloses a method for interlocking control of driving and operation of a new energy aerial work vehicle. Only a power switching button is designed on the cab instrument panel. Through CAN network information interaction, without adding hardware and circuit layout, the interlocking of power output between the chassis and the upper body is controlled, which not only ensures the operation safety of the operators, but also minimizes the vehicle energy consumption to the greatest extent. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the interlocking control logic for driving and operation of a new energy aerial work vehicle.

[0020] Figure 2 It is a flowchart of the interlocking control for driving and operation of a new energy aerial work vehicle. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] A method for interlocking control of driving and operation of a new energy aerial work vehicle includes an instrument power switching demand switch, a working vertical outrigger detection switch, a central processing unit, a chassis and an upper body. The central processing unit judges the interlocking control requirements for the upper body and the chassis according to the signals of the instrument power switching demand switch or the working vertical outrigger detection switch, and controls the interlocking switching of the chassis and the upper body;

[0023] The interlocking control method includes the following steps, as Figure 1 shown

[0024] S1): The central processing unit judges whether the working vertical outriggers are stressed through the working vertical outrigger detection switch. If the working vertical outriggers are stressed, the central processing unit drives the upper body to work and locks the chassis at the same time; if the working vertical outriggers are not stressed, it proceeds to step S2);

[0025] S2): The central processing unit judges the state of the instrument power switching demand switch. If the instrument power switching demand switch is in the open state, the central processing unit drives the upper body to work and locks the chassis at the same time; if the instrument power switching demand switch is in the closed state, it proceeds to step S3);

[0026] S3): The central processing unit determines the switching action of whether the instrument power switching demand switch changes from the off state to the on state. If there is an action of the instrument power switching demand switch changing from off to on, the central processing unit drives the upper equipment to work and locks the chassis at the same time. If there is no action of the instrument power switching demand switch changing from off to on, it proceeds to step S4).

[0027] S4): The central processing unit determines whether the upper equipment motor is in the working state. If the upper equipment motor is in the working state, the central processing unit drives the upper equipment to work and locks the chassis at the same time. If the upper equipment motor is in the non - working state, the central processing unit drives the chassis to work and locks the upper equipment at the same time.

[0028] The instrument power switching demand switch is used to detect the driver's operation demand for power switching, and the signal of the instrument power switching demand switch is directly transmitted into the central processing unit; when the vehicle is in the initial startup state and the instrument power switching demand switch is in the off state, the chassis works and the upper equipment is locked. When the instrument power switching demand switch is in the on state, the chassis is locked and the upper equipment starts to work.

[0029] The operation vertical outrigger detection switch is used to detect whether the operation vertical outriggers are stressed to judge the working state of the vehicle, and the signal of the operation vertical outrigger detection switch is directly transmitted into the central processing unit; when at least one of the operation vertical outriggers extends and is stressed, the central processing unit no longer responds to the switching state of the instrument power switching demand switch. At this time, the chassis is locked and the upper equipment is in the working state.

[0030] In step S4), the working state or non - working state of the upper equipment motor is judged according to the rotation speed of the upper equipment motor. If the upper equipment motor has no rotation speed, the upper equipment motor is in the non - working state. If the upper equipment motor has rotation speed, the upper equipment motor is in the working state.

[0031] As Figure 2 shown, the method for the central processing unit to drive the upper equipment to work and lock the chassis at the same time is to control the chassis to park and request the chassis power source to be turned off; after the chassis feedbacks that the engine or motor has been turned off, control the upper equipment power source to be turned on, and the motor enters the working mode to provide hydraulic power; when all the operating vertical outriggers extend and are stressed, control the chassis to turn off the unnecessary electronic control components.

[0032] The method for the central processing unit to drive the chassis to work and lock the upper equipment at the same time is to control the chassis to turn on the turned - off electronic control components and request the upper equipment power source to be turned off; after the upper equipment feedbacks that the motor has been turned off, control the chassis power source to be turned on, enter the working mode, and the parking state is released by the driver's operation.

[0033] The interlock switching between the chassis and the upper equipment is carried out through the CAN network for interaction.

[0034] The mutual locking control method for driving and operation of the new energy aerial work vehicle monitors the driver's demands and the actual vehicle conditions according to the states of the power switching demand switch and the vertical outrigger detection switch, and logically judges and outputs the usage control modes of the chassis and the superstructure, specifically including five control modes from a to e;

[0035] a. When the instrument power switching demand switch is off, it is considered that the chassis has a work request. At this time, all the operating vertical outriggers are retracted and not stressed, and the superstructure motor has no rotation speed, then it is determined that the superstructure is locked and the chassis works;

[0036] b. When the instrument power switching demand switch is on, it is considered that the superstructure has a work request. At this time, all the operating vertical outriggers are retracted and not stressed, then it is determined that the chassis is locked and the superstructure works;

[0037] c. At least one of the operating vertical outriggers is extended and stressed. At this time, the instrument power switching demand switch is no longer considered, and it is determined that the chassis is locked and the superstructure works.

[0038] In state c, there will be two different situations according to the state of the instrument power switching demand switch:

[0039] The first situation is that after the superstructure works in state c, the instrument power switching demand switch remains on all the time. After the outriggers are retracted at the end of the work, it enters state b.

[0040] The second situation is that after the superstructure works in state c, the driver accidentally operates the instrument power switching demand switch to turn it off. After the outriggers are retracted at the end of the work, it enters state d.

[0041] d. All the vertical outriggers are retracted and not stressed. At this time, if the instrument power switching demand switch is off, it is considered that the chassis has a work demand. However, since the superstructure motor has a rotation speed, at this time, it is still determined that the chassis is locked and the superstructure works; the instrument switching demand switch needs to be turned on and then turned off again to enter state e, avoiding unexpected state switching and ensuring that the state switching is triggered by the instrument power switching demand switch.

[0042] e. All the vertical outriggers are retracted and not stressed. At this time, if the instrument power switching demand switch is switched from on to off, it is determined that the superstructure is locked and the chassis works.

[0043] The power usage control modes of the chassis and the superstructure are interacted through CAN network information to control the working states of the chassis and the superstructure to achieve the mutual locking control of driving and operation. The mutual locking control includes the conversion from the driving mode to the operation mode and the conversion from the operation mode to the driving mode.

[0044] Such as Figure 2As shown, the driving mode is converted to the working mode. At this time, when the central processing unit detects the chassis lock and the control signal for the upper equipment to work, it controls the chassis to park, and at the same time requests the chassis power source, such as the engine or motor, to be turned off. After the chassis feedbacks that the engine or motor has been turned off, it controls the upper equipment power source to be turned on, and the motor enters the working mode to provide hydraulic power. When all the vertical outriggers are extended and stressed, it controls the chassis to turn off unnecessary electronic control components to reduce energy consumption.

[0045] The working mode is converted to the driving mode. At this time, when the central processing unit detects the upper equipment lock and the control signal for the chassis to work, it controls the chassis to turn on the turned-off electronic control components, and at the same time requests the upper equipment power source to be turned off. After the upper equipment feedbacks that the motor has been turned off, it controls the chassis power source to be turned on and enters the working mode, and the parking state is released by the driver's operation.

[0046] The above-mentioned interlock control method for the driving and working of new energy aerial work platforms makes logical judgments by the central processing unit according to the driver's switching requirements and the actual state of the vehicle, and finally outputs the use control for driving and working. Information is exchanged through the CAN network to control the working states of the chassis and the upper equipment to achieve the interlock control of driving and working. Without adding hardware and circuit arrangements, it controls the chassis and the upper equipment to achieve the interlock of power output, which not only ensures the operation safety of the operators, but also minimizes the energy consumption of the whole vehicle. At the same time, the logical judgment outputs the use control modes of the chassis and the upper equipment. The state switching between driving and working is triggered by the driver's operation, avoiding unexpected state switching and ensuring that the state switching is triggered by the power switching demand switch.

[0047] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A method for interlocking control of driving and operation of a new energy aerial work platform, characterized in that: It includes an instrument power switching demand switch, a working vertical outrigger detection switch, a central processing unit, a chassis and an upper body. The central processing unit determines the interlock control requirements for the upper body and the chassis based on the signal of the instrument power switching demand switch or the signal of the working vertical outrigger detection switch, and controls the interlock switching between the chassis and the upper body. The interlock control method includes the following steps: S1): The central processing unit determines whether the working vertical outriggers are stressed through the working vertical outrigger detection switch. If the working vertical outriggers are stressed, the central processing unit drives the upper body to work and locks the chassis at the same time. If the working vertical outriggers are not stressed, it proceeds to step S2). S2): The central processing unit determines the state of the instrument power switching demand switch. If the instrument power switching demand switch is in the open state, the central processing unit drives the upper body to work and locks the chassis at the same time. If the instrument power switching demand switch is in the closed state, it proceeds to step S3). S3): The central processing unit determines whether there is a switching action of the instrument power switching demand switch from the closed state to the open state. If there is a switching action of the instrument power switching demand switch from the closed state to the open state, the central processing unit drives the upper body to work and locks the chassis at the same time. If there is no switching action of the instrument power switching demand switch from the closed state to the open state, it proceeds to step S4). S4): The central processing unit determines whether the upper body motor is in the working state. If the upper body motor is in the working state, the central processing unit drives the upper body to work and locks the chassis at the same time. If the upper body motor is in the non - working state, the central processing unit drives the chassis to work and locks the upper body at the same time.

2. The method for interlocking control of driving and operation of a new energy aerial work platform according to claim 1, characterized in that: The instrument power switching demand switch is used to detect the driver's operation demand for power switching, and the signal of the instrument power switching demand switch is directly transmitted into the central processing unit. When the vehicle starts in the initial state and the instrument power switching demand switch is in the closed state, the chassis works and the upper body is locked. When the instrument power switching demand switch is in the open state, the chassis is locked and the upper body starts to work.

3. The new energy aerial work platform driving and operation interlock control method according to claim 1, characterized in that: The working vertical outrigger detection switch is used to detect whether the working vertical outriggers are stressed to judge the working state of the vehicle, and the signal of the working vertical outrigger detection switch is directly transmitted into the central processing unit. When at least one of the working vertical outriggers extends and is stressed, the central processing unit no longer responds to the switching state of the instrument power switching demand switch. At this time, the chassis is locked and the upper body is in the working state.

4. The driving and operation interlock control method for a new energy aerial work platform according to claim 1, characterized in that: In step S4), the working state or non - working state of the upper body motor is judged according to the rotation speed of the upper body motor. If the upper body motor has no rotation speed, the upper body motor is in the non - working state. If the upper body motor has rotation speed, the upper body motor is in the working state.

5. The driving and operation interlock control method for a new energy aerial work platform according to claim 1, wherein: The method for the central processing unit to drive the upper body to work and lock the chassis at the same time is to control the chassis to park and request the chassis power source to be turned off. After the chassis feedbacks that the engine or motor has been turned off, control the upper body power source to be turned on, and the motor enters the working mode to provide hydraulic power. When all the operating vertical outriggers extend and are stressed, control the chassis to turn off unnecessary electronic control components.

6. The new energy aerial work platform driving and operation interlock control method according to claim 1, characterized in that: The method for the central processing unit to drive the chassis to work and lock the superstructure at the same time is as follows: control the chassis to turn on the electrically controlled components that have been closed, and at the same time request the superstructure power source to be turned off; after the superstructure feedbacks that the motor has been turned off, control the chassis power source to be turned on and enter the working mode, and the parking state is released by the driver's operation.

7. The method for interlocking control of driving and operation of a new energy aerial work vehicle according to claim 1, characterized in that: The interlock switching between the chassis and the superstructure is carried out through the CAN network.

Images