Aerial work platform valve group control system and control method thereof

Abstract

The application discloses a kind of aerial work platform valve group control systems and control method thereof, including platform module, platform valve group, wireless remote control receiver and battery;The platform valve group includes multiple platform valve group coils, multiple platform valve group coils are electrically connected with the platform module respectively;The wireless remote control receiver is configured with power input end and multiple signal output ends, wherein power input end connects the battery, each signal output end is electrically connected between each platform valve group coil and platform module respectively;The platform module is electrically connected with a relay, and the normally closed contact of the relay is arranged between power input end and battery.Because the above technical scheme is adopted, compared with prior art, the application adopts wireless remote control technology, not only reduces the difficulty of boom pipeline arrangement, reduces the difficulty and error rate of boom cable installation, but also reduces the cost and manual maintenance difficulty of control system.

Description

Technical Field

[0001] This invention relates to the field of aerial work platform technology, specifically to an aerial work platform valve group control system and its control method. Background Technology

[0002] Existing high-lift hybrid boom aerial work platforms have numerous boom sections and complex structures, with the boom cylinder, leveling cylinder, and workbench slewing motor all located at the boom end. To improve response speed, control precision, reduce the number of pipe joints, and mitigate the impact of hydraulic compressibility in long pipelines on motion execution, the boom, leveling, and workbench slewing motion control valve assemblies are typically installed inside the boom or in the workbench bracket, driven by the platform module. The disadvantage is that if a fault occurs in the cable or cable connector connecting the turntable and the platform control system, leading to abnormal platform power supply or communication interruption, the platform valve assembly will fail to output power. During boom retraction, the workbench will tilt severely, making it impossible to safely place personnel or tools on the ground. Summary of the Invention

[0003] This invention provides a platform valve group control system and control method for aerial work platforms to solve the technical problem that when the cable or cable connector connecting the turntable and the platform control system of an existing aerial work platform malfunctions, resulting in abnormal power supply or communication interruption, the platform valve group cannot output power and thus cannot work normally.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] On one hand, a platform valve group control system for an aerial work platform is provided, including a platform module, a platform valve group, a wireless remote control receiver, and a battery; the platform valve group includes multiple platform valve group coils, which are electrically connected to the platform module respectively; the wireless remote control receiver is configured with a power input terminal and multiple signal output terminals, wherein the power input terminal is connected to the battery, and each signal output terminal is electrically connected between each platform valve group coil and the platform module respectively; the platform module is electrically connected to a relay, and the normally closed contact of the relay is located between the power input terminal and the battery.

[0006] Therefore, compared to the solution of connecting the platform module or the coils of each platform valve group through the boom spare cable, the present invention adopts wireless remote control technology, which not only reduces the difficulty of boom pipeline layout, the difficulty of boom cable installation and error rate, but also reduces the cost of control system and the difficulty of manual maintenance.

[0007] To ensure the battery remains fully charged for extended periods and to prevent battery depletion due to forgetting to manually charge it, in some embodiments, the battery is electrically connected in sequence to a solar charger and a photovoltaic panel.

[0008] In some embodiments, the battery capacity does not exceed 5Ah, and the photovoltaic panel power does not exceed 100W. Since the backup wireless remote control system is an emergency control system, powering it with a small-capacity battery avoids occupying too much platform load.

[0009] In some embodiments, a lighting lamp is electrically connected between the battery and the power input terminal. Thus, the lighting lamp not only improves the utilization rate of the photovoltaic microgrid but also provides illumination for nighttime construction, verifies the effectiveness of the microgrid system, and ensures good charge-discharge cycles for the microgrid system.

[0010] In some embodiments, a fuse is electrically connected between the battery and the solar charger, and between the battery and the power input terminal.

[0011] On the other hand, a control method for the above-mentioned aerial work platform valve group control system is provided, comprising the following steps: When the boom cable is properly connected, the relay is energized, the normally closed contact opens, cutting off the electrical connection between the wireless remote control receiver and the battery. The platform module then drives the valve coil to be energized and executes the corresponding action. When the boom cable connection is abnormal, the platform module output is turned off, the relay is de-energized, the normally closed contact closes, and the electrical connection between the wireless remote control receiver and the battery is established. The remote control transmitter sends a command to the wireless remote control receiver, thereby controlling the corresponding valve coil to be energized and execute the corresponding action.

[0012] This invention has at least the following technical effects or advantages: 1. This invention uses wireless remote control technology, which not only reduces the difficulty of boom pipeline layout and boom cable installation and error rate, but also reduces the cost of the control system and the difficulty of manual maintenance.

[0013] 2. Charging the battery with photovoltaic panels and solar chargers can ensure that the battery is always fully charged and avoid battery depletion due to forgetting to manually charge it.

[0014] 3. Since the backup wireless remote control system is an emergency control system, it is powered by a small-capacity battery, which avoids occupying too much platform load.

[0015] 4. Lighting can not only improve the utilization rate of photovoltaic microgrids, but also provide lighting for nighttime construction, test the effectiveness of microgrid systems, and ensure that microgrid systems have good charge and discharge cycles. Attached Figure Description

[0016] Figure 1 This is a circuit connection diagram of the valve group control system of an aerial work platform in one embodiment of the present invention. Detailed Implementation

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] See Figure 1 A control system for a platform valve group of an aerial work vehicle includes a platform module 1, a platform valve group, a wireless remote control receiver 3, and a battery 43.

[0019] The platform valve group includes multiple platform valve group coils 2, which are electrically connected to the platform module 1 respectively.

[0020] The wireless remote control receiver 3 is equipped with a power input terminal 31 and multiple signal output terminals 32. The power input terminal 31 is connected to the battery 43, and each signal output terminal 32 is electrically connected between the platform valve group coil 2 and the platform module 1. The platform module 1 is electrically connected to a relay K, and the normally closed contact K1 of the relay K is located between the power input terminal 31 and the battery 43.

[0021] As a preferred embodiment, the battery 43 is electrically connected to the solar charger 42 and the photovoltaic panel 41 in sequence, and is charged by solar energy.

[0022] As a preferred option, the battery capacity should not exceed 5Ah, and the photovoltaic panel 41 power should not exceed 100W.

[0023] As a preferred embodiment, a light bulb 5 is electrically connected between the battery 43 and the power input terminal 31.

[0024] As a preferred embodiment, a fuse 6 is electrically connected between the battery 43 and the solar charger 42, and between the battery 43 and the power input terminal 31.

[0025] The present invention also discloses a control method for the above-mentioned aerial work platform valve group control system, comprising the following steps: When the boom cable is properly connected, the relay is energized, the normally closed contact opens, cutting off the electrical connection between the wireless remote control receiver and the battery, and the wireless remote control system does not work. When the boom cable connection is abnormal, the platform module output is turned off, the relay is de-energized, the normally closed contact closes, and the electrical connection between the wireless remote control receiver and the battery is established. The remote control transmitter sends a command to the wireless remote control receiver, thereby controlling the corresponding valve coil to be energized and execute the corresponding action.

[0026] It should be noted that the wireless remote control system uses a universal vehicle remote control system. The receiver has multiple outputs connected in parallel to the platform valve group coils. The remote control buttons correspond to the valve group actions. When the remote transmitter and receiver are connected, the transmitter controls the corresponding valve group coil to be energized and execute the corresponding action. If the remote control system is not connected or is not operated for a set time after connection, the remote receiver will enter sleep mode. The receiver operates in sleep mode for extended periods with a low current consumption (in the microamp level), reducing power consumption. After the receiver enters sleep mode, the transmitter needs to resend a preamble code to wake it up before it can be used again. The vehicle wireless remote control system is a mature application, with a wireless control distance of up to 100 meters and a cost that can be controlled within 300 yuan.

[0027] Battery capacity selection is based on the valve assembly's operating time and current calculations. If the platform valve assembly operates for 0.5 hours with a 2A operating current during emergency shutdown, a 4Ah capacity is required. If a maintenance-free lead-acid battery is used, considering its 50% discharge capacity, a 12V 8Ah lead-acid battery is needed. If a lithium battery is used, considering its 80% discharge capacity, a 12V 5Ah lithium battery is needed. Small-capacity lithium batteries are less commonly used in the market, while small-capacity maintenance-free lead-acid batteries are widely used in motorcycles. They weigh approximately 1.5kg, and the cost per battery can be kept below 100 yuan. A 24V system can use two batteries connected in series.

[0028] The selection of photovoltaic (PV) panels should be based on battery capacity and charging rate. For a 4Ah power replenishment, a 96W PV panel is recommended for a 24V system that can be fully charged in one hour. In actual operation, a full charge in 2-3 hours is acceptable for emergency backup. A commercially available 18V 20-50W low-power PV panel, weighing approximately 1.5kg, can be used. Its small size allows for installation above the boom arm or in locations that do not increase wind resistance and offer convenient wiring. An 18V PV panel requires a solar booster charger to charge a 24V battery. The charger should have 24V output capability, overcharge and reverse connection protection, and a charging curve compatible with lead-acid or lithium batteries. The overall cost of the PV charging system can be kept under 200 yuan.

[0029] The platform valve group emergency control system, centered on a photovoltaic microgrid and wireless remote control, utilizes readily available materials, is inexpensive, occupies minimal platform weight, and is easy to install. To improve the utilization rate of the photovoltaic microgrid, approximately 10W of nighttime lighting strips can be added, providing illumination for nighttime construction, testing the effectiveness of the microgrid system, and ensuring good charge-discharge cycles for the microgrid system.

[0030] During operation, when the boom cable is working normally, relay K is energized, and its normally closed contact K1 opens, cutting off the power supply to the wireless remote control receiver. When the boom cable malfunctions, i.e., when the platform control system experiences power or communication issues, relay K is de-energized, and its normally closed contact K1 closes, connecting the power supply to the wireless remote control receiver. The remote transmitter sends a connection wake-up preamble. After the receiver detects the connection request in low-power mode, it enters the working mode, executes the transmitter's action control commands, and drives the valve assembly. Power is supplied by the battery. When the solar charger MPPT detects a decrease in battery power, the photovoltaic charging device begins charging the battery. The charging speed is fast when the sunlight is strong and slow when the sunlight is weak, until the battery is fully charged. The charging circuit is automatically cut off, and the device enters sleep mode.

[0031] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0032] Similarly, it should be understood that, in order to streamline this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0033] Those skilled in the art will understand that the modules, units, or groups of devices in the examples disclosed herein can be arranged in the device as described in this embodiment, or alternatively, can be located in one or more devices different from the device in this example. The modules in the foregoing examples can be combined into a single module or further divided into multiple sub-modules.

[0034] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or groups in the embodiments can be combined into a single module, unit, or group, and further, they can be divided into multiple sub-modules, sub-units, or sub-groups. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0035] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention and form different embodiments.

[0036] Furthermore, some of the embodiments described herein are methods or combinations of method elements that can be implemented by a processor of a computer system or by other means of performing the functions. Therefore, a processor having the necessary instructions for implementing the methods or method elements forms means for implementing the methods or method elements. Furthermore, the elements described herein in the apparatus embodiments are examples of means for implementing the functions performed by elements for the purposes of carrying out the invention.

[0037] The various techniques described herein can be implemented in combination with hardware or software, or a combination thereof. Thus, the methods and apparatus of the present invention, or certain aspects or portions thereof, can take the form of program code (i.e., instructions) embedded in a tangible medium, such as a floppy disk, CD-ROM, hard disk, or any other machine-readable storage medium, wherein when the program is loaded into and executed by a machine such as a computer, the machine becomes an apparatus for practicing the present invention.

[0038] When the program code is executed on a programmable computer, the computing device generally includes a processor, a processor-readable storage medium (including volatile and non-volatile memory and / or storage elements), at least one input device, and at least one output device. The memory is configured to store program code; the processor is configured to execute the method of the present invention according to instructions in the program code stored in the memory.

[0039] By way of example, and not limitation, computer-readable media include computer storage media and communication media. Computer storage media store information such as computer-readable instructions, data structures, program modules, or other data. Communication media generally embody computer-readable instructions, data structures, program modules, or other data in the form of modulated data signals such as carrier waves or other transmission mechanisms, and include any information transmission medium. Any combination of the above is also included within the scope of computer-readable media.

[0040] As used herein, unless otherwise specified, the use of ordinal numbers such as “first,” “second,” “third,” etc., to describe ordinary objects merely indicates different instances of similar objects and is not intended to imply that the objects being described must have a given order in time, space, ordering, or any other manner.

[0041] Although the invention has been described with reference to a limited number of embodiments, those skilled in the art will understand from the foregoing description that other embodiments are conceivable within the scope of the invention described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and instructional purposes, and not for the purpose of interpreting or limiting the subject matter of the invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. The disclosure of the invention is illustrative and not restrictive, and the scope of the invention is defined by the appended claims.

[0042] Finally, it should be noted that this invention does not explain in detail the common knowledge recognized by those skilled in the art. The above description is only a specific embodiment of this invention and is not intended to limit this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A valve group control system for an aerial work platform, characterized in that, The system includes a platform module, a platform valve assembly, a wireless remote control receiver, and a battery. The platform valve assembly includes multiple platform valve coils, each electrically connected to the platform module. The wireless remote control receiver is equipped with a power input terminal and multiple signal output terminals, wherein the power input terminal is connected to the battery, and each signal output terminal is electrically connected between each platform valve coil and the platform module. The platform module is electrically connected to a relay, and the normally closed contact of the relay is located between the power input terminal and the battery.

2. The aerial work platform valve group control system according to claim 1, characterized in that: The battery is connected in sequence to the solar charger and the photovoltaic panel.

3. The aerial work platform valve group control system according to claim 2, characterized in that: The capacity of the battery shall not exceed 5Ah, and the power of the photovoltaic panel shall not exceed 100W.

4. The aerial work platform valve group control system according to claim 1 or 2, characterized in that: A light is electrically connected between the battery and the power input terminal.

5. The aerial work platform valve group control system according to claim 2, characterized in that: A fuse is electrically connected between the battery and the solar charger, and between the battery and the power input terminal.

6. A control method for a valve group control system for an aerial work platform as described in any one of claims 1-5, characterized in that, Includes the following steps: When the boom cable is properly connected, the relay is energized, the normally closed contact opens, cutting off the electrical connection between the wireless remote control receiver and the battery, and the wireless remote control system does not work. When the boom cable connection is abnormal, the platform module output is turned off, the relay is de-energized, the normally closed contact closes, and the electrical connection between the wireless remote control receiver and the battery is established. The remote control transmitter sends a command to the wireless remote control receiver, thereby controlling the corresponding valve coil to be energized and execute the corresponding action.

Images