Control device of movable lifting working platform

Abstract

The utility model discloses a control device of a movable lifting working platform, which comprises an operation unit, a signal processing module and a display unit, and the signal processing module receives control signals of the operation unit; the operation unit comprises a platform control box, a rotary table control box and an activity control box, and the rotary table control box is provided with a permission change-over switch used for enabling or disabling operation permissions of other control boxes; the platform control box and the movable control box are provided with permission buttons, and the permission of the corresponding control box can be activated only when the permission change-over switch is started; the movable control box is connected with the signal processing module; the signal processing module is integrated with an interlocking module and is used for forbidding operation of other control boxes when the platform control box or the movable control box is activated; according to the utility model, the movable control boxes with flexible positions are additionally arranged on the working platform, and the permission button activated by long pressing and the interlocking module for restricting the control right between the control boxes are introduced, so that the control device has the characteristics of flexible operation position and high safety.

Description

Technical Field

[0001] This utility model relates to a lifting work platform, and more particularly to a control device for a mobile lifting work platform. Background Technology

[0002] Mobile aerial work platforms, as specialized engineering equipment, play a crucial role in high-altitude operations such as building construction, steel structure installation, stadium construction, and equipment maintenance. Their core function is to provide operators with a safe and reliable platform for high-altitude work. Currently, the industry commonly uses a human-machine interface system consisting of a turntable control box and a platform control box. The turntable control box is located at the equipment base for ground control, while the platform control box is fixedly installed at a specific location on the work platform to meet high-altitude operation requirements. However, the rigid installation of the platform control box reveals significant drawbacks in practical applications: because the physical position of the control unit is not adjustable, operators cannot flexibly choose the optimal operating position according to the working conditions, nor can they maintain a direct view of the work surface in real time, leading to frequent dangerous postures such as operating with their backs to the camera or having their line of sight deviated. This structural defect not only significantly reduces the efficiency of high-altitude operations but also significantly increases the probability of safety accidents such as equipment collisions and personnel falls because operators cannot fully grasp the dynamics of the surrounding environment, severely restricting the safe application of this type of equipment in complex working conditions. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a control device for a mobile lifting work platform that offers flexible operation and high safety.

[0004] Technical Solution: The present invention discloses a control device for a mobile lifting work platform, comprising an operation unit, a signal processing module, and a display unit. The signal processing module receives control signals from the operation unit. The operation unit includes a platform control box, a turntable control box, and a movable control box. The turntable control box is equipped with a permission switching switch to enable or disable the operation permissions of the platform control box and the movable control box. Both the platform control box and the movable control box are equipped with permission buttons, and the permission buttons can only activate the operation permissions of the corresponding control box when the permission switching switch is enabled. The movable control box is connected to the signal processing module via wireless communication or wired connection. The signal processing module communicates with the operation unit and corresponding sensors via a CAN bus and integrates an interlock module to disable the operation of other control boxes when the platform control box or the movable control box is activated.

[0005] Preferably, the interlock module includes a CAN bus interface circuit and a relay switch group; the CAN bus interface circuit is used to receive the activation signal from the signal processing module; the relay switch group is electrically connected to the operation unit and is used to cut off or connect the control signal transmission, effectively ensuring the safety of equipment operation.

[0006] Preferably, the active control box and the signal processing module are wirelessly connected. The active control box integrates a remote control transmitter, and the signal processing module has a wireless receiver module matched with the transmitter. The wireless communication connection increases the device's flexibility, allowing for more freedom in equipment layout and movement; simultaneously, it offers strong scalability, enabling flexible expansion as needed without rewiring.

[0007] Preferably, the active control box and the signal processing module are connected by a wire and are installed on the active bracket of the work platform. The wire harness is led out from the active control box and passes through the wiring groove inside the active bracket. The end is connected to the signal processing module through a waterproof plug, and the length of the wire harness has an operational margin.

[0008] Preferably, the movable support includes a base plate, a rotating connecting part, and a U-shaped fastening assembly. The movable control box is fixed on the base plate and is adapted to round tubes of different diameters through the U-shaped fastening assembly. This allows the movable control box to flexibly adjust its position along the surrounding handrail round tubes on the work platform, avoiding blind spots.

[0009] Preferably, the display unit is electrically connected to the signal processing module and is used to display the device activation status and fault warning information; the display unit includes an LED indicator board and a display screen; the LED indicator board is fixed to the surface of each control box and is used to distinguish the activation status and fault type by color; the display screen is embedded in the panel of each control box and is used to display fault codes and operation prompts.

[0010] Preferably, the operation panel of the operation unit is equipped with a main boom luffing button, a main boom telescopic button, a boom luffing button, a boom telescopic button, a boom swing button, and a platform rotation button. Each button is electrically connected to the signal processing module. After obtaining operation permission, the control device is activated by pressing and holding the permission button on the platform control box or the activity control box. Then, pressing the corresponding operation button and permission button can realize the corresponding vehicle action.

[0011] Beneficial effects: Compared with the prior art, the present invention has the following advantages: By adding a flexible mobile control box to the working platform and introducing a long-press activated permission button and an interlocking module that restricts the control rights between control boxes, the present invention makes the control device flexible in operation and highly safe. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the distribution of the operating units of this utility model on the platform.

[0013] Figure 2 This is a schematic diagram of the turntable control box of this utility model.

[0014] Figure 3This is a schematic diagram of the activation logic of the operation unit of this utility model.

[0015] Figure 4 This is a schematic diagram of the operation logic of the operating unit of this utility model. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0017] like Figure 1-4 As shown, a control device for a mobile lifting work platform mainly consists of an operation unit 1, a signal processing module 2, and a display unit 3, forming the core control system. Operating unit 1 includes a platform control box, a turntable control box, and an active control box 4. The turntable control box is located on the turntable at the bottom of the entire mobile platform. The turntable control box implements global management of operating permissions through a permission switching switch on it: that is, the turntable control box has priority. When the permission switching switch on the turntable control box is closed, the signal processing module 2 only responds to the turntable control box's instructions and disables other control units. When the permission switching switch on the turntable control box is opened, the operating rights are transferred to the platform control box and the active control box 4. Both the platform control box and the active control box 4 are equipped with permission buttons, and the permission buttons can only activate the corresponding control box's operating rights when the permission switching switch is open. At this time, the turntable control box is in a disabled state, and the vehicle control rights are determined by the permission buttons. At this time, the operator needs to continuously press the permission button of the corresponding control box to activate the control rights. After receiving the activation signal through the CAN bus, the signal processing module 2 triggers the interlock module to block the operating instructions of other control boxes in real time, forming a hierarchical safety interlock mechanism. After releasing the permission button, the control of the entire vehicle by this control box immediately becomes invalid.

[0018] The active control box 4 serves as an expandable operating terminal, and its communication with the signal processing module 2 can be achieved wirelessly or via a wired connection. When the active control box 4 and the signal processing module 2 are wirelessly connected, the remote control transmitter built into the box and the wireless receiver module of the signal processing module 2 form a point-to-point communication link, enabling flexible operation without physical constraints. When the active control box 4 and the signal processing module 2 are wired, the active control box 4 can be installed on the movable bracket of the work platform. The wiring harness is led out from the active control box 4 and passes through the wiring channel inside the movable bracket, with the end connected to the signal processing module 2 via a waterproof plug. The length of the wiring harness is left with an operational margin. The movable bracket includes a base plate, a rotating connection part, and a U-shaped fastening assembly. The active control box 4 is fixed to the base plate, and the U-shaped fastening assembly adapts to round tubes of different diameters, allowing the active control box to flexibly adjust its position along the surrounding handrail round tubes on the work platform, avoiding blind spots.

[0019] The device's functional execution flow is dominated by the signal processing module 2. After receiving instructions from the operation unit 1, this module synchronously collects data from various sensors and performs safety logic calculations. When it confirms that the equipment is fault-free and meets the motion conditions, it outputs control signals to the corresponding proportional valves and coordinates the power unit to output matching power. The operation panel of the operation unit 1 is equipped with a set of dedicated function buttons, including the main boom luffing button, main boom telescopic button, articulated boom luffing button, articulated boom telescopic button, articulated boom swing button, and platform rotation button. These buttons are electrically connected to the signal processing module 2 through a customized circuit layout, enabling precise multi-axis coordinated movements under complex working conditions.

[0020] Display unit 3 serves as the human-machine interface, constructing a dual-state feedback system through the collaborative work of an embedded LED indicator board and a display screen. The LED indicator boards are fixed to the surface of each control box, using color to distinguish between activation status and fault type. The display screen is embedded in the panel of each control box, displaying fault codes and operation prompts. After the corresponding controller is successfully activated, signal processing module 2 transmits the activation process information to display unit 3 via the CAN bus. An indicator light illuminates on the LED indicator board of display unit 3, indicating that the display device is in an activated state. The indicator light disappears after exiting the activated state. When the vehicle is in an error state or experiences movement restrictions or alarms due to improper operation, a warning indicator also illuminates on the display screen of display unit 3, reminding the operator to check fault information and troubleshoot the problem. When the fault is resolved and the vehicle is in a normal state, the warning indicator disappears, and the operator needs to reactivate the corresponding operation unit 1 to control the vehicle to complete the action. Through deep integration of hardware architecture and communication protocols, the entire system ensures operational flexibility while building a multi-layered safety protection system, significantly improving the operational safety and adaptability of the aerial work platform.

[0021] The entire device operates on the following principle: It achieves precise control of the lifting platform through hierarchical access control and multimodal communication. Its working principle begins with the global allocation of operating permissions: the turntable control box, as the main control terminal, determines the flow of operating rights through a mechanical access control switch. When the access control switch is in the locked state, the system only responds to the commands of the turntable control box, forming a basic safety barrier. When the access control switch is activated, the platform control box and the active control box 4 enter a waiting-to-activate state. The operator must continuously press the access button of the selected control box for more than 3 seconds to trigger the interlock judgment program of the signal processing module 2. This module analyzes the activation request signal transmitted via the CAN bus, cuts off the communication link of the non-activated control boxes in real time, and simultaneously updates the LED status indicator on the display unit 3, forming a visual operation permission confirmation mechanism. The active control box 4 adopts a dual-mode communication architecture to ensure control reliability under extreme working conditions. The entire control device, through a closed-loop architecture of hierarchical access control, signal interlocking, and real-time feedback, enhances the flexibility of high-altitude operations while constructing a multi-layered dynamic protection system, enabling the equipment to possess both operational freedom and inherent safety in complex construction environments.

Claims

1. A control device for a mobile lifting work platform, comprising an operation unit (1), a signal processing module (2), and a display unit (3), wherein the signal processing module (2) is used to receive control signals from the operation unit (1); characterized in that, The operation unit (1) includes a platform control box, a turntable control box, and an active control box (4). The turntable control box is equipped with a permission switching switch to enable or disable the operation permissions of the platform control box and the active control box (4). Both the platform control box and the active control box (4) are equipped with permission buttons, and the permission buttons can only activate the operation permissions of the corresponding control box when the permission switching switch is enabled. The active control box (4) is connected to the signal processing module (2). The signal processing module (2) communicates with the operation unit (1) through the CAN bus and integrates an interlock module to disable the operation of other control boxes when the platform control box or the active control box (4) is activated.

2. The control device according to claim 1, characterized in that: The interlock module includes a CAN bus interface circuit and a relay switch group; the CAN bus interface circuit is used to receive the activation signal from the signal processing module (2); the relay switch group is electrically connected to the operation unit (1) and is used to cut off or connect the transmission of control signals.

3. The control device according to claim 1, characterized in that: The active control box (4) and the signal processing module (2) are wirelessly connected. The active control box (4) integrates a remote control transmitter, and the signal processing module (2) is equipped with a wireless receiving module that matches the transmitter.

4. The control device according to claim 1, characterized in that: The active control box (4) is wired to the signal processing module (2) and is installed on the active bracket of the work platform. The wire harness is led out from the active control box (4) and passes through the wiring groove inside the active bracket. The end is connected to the signal processing module (2) through a waterproof plug, and the length of the wire harness has an operating margin.

5. The control device according to claim 4, characterized in that: The movable support includes a base plate, a rotating connection part and a U-shaped fastening assembly. The movable control box (4) is fixed on the base plate and is adapted to round pipes of different diameters through the U-shaped fastening assembly.

6. The control device according to claim 1, characterized in that: The display unit (3) is electrically connected to the signal processing module (2) and is used to display the activation status and fault warning information of the device; the display unit (3) includes an LED indicator board and a display screen; the LED indicator board is fixed on the surface of each control box and is used to distinguish the activation status and fault type by color; The display screen is embedded in the panel of each control box and is used to display fault codes and operation prompts.

7. The control device according to claim 1, characterized in that: The operation panel of the operation unit (1) is equipped with a main boom luffing button, a main boom telescopic button, a curved boom luffing button, a curved boom telescopic button, a curved boom swing button, and a platform rotation button. Each button is electrically connected to the signal processing module (2).

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