Intelligent wireless overload weighing device
The intelligent wireless overload weighing device solves the compatibility and signal interference problems of traditional crane overload limiters, achieves wide sensor compatibility, reduces installation costs and maintenance difficulty, and improves crane safety and visual monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HOUTAI (HUBEI) HOISTING EQUIP CO LTD
- Filing Date
- 2026-02-24
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional crane overload limiters suffer from high cable connection costs, susceptibility to signal interference, poor compatibility, difficulty in retrofitting and upgrading, and lack of integrated limit signal acquisition capabilities, resulting in insufficient safety and visibility.
Design an intelligent wireless overload weighing device, including an overload signal acquisition board, a display control board, and a display screen. It supports wired, wireless, and dual-channel transmission, integrates weight signal and limit signal acquisition, overload protection, and abnormal recording functions, is compatible with self-developed and third-party sensors, and adopts a modular design to adapt to installation in confined spaces.
It achieves broad sensor compatibility, reduces cable laying costs and construction difficulty, improves signal transmission flexibility and anti-interference ability, enhances crane safety protection and visual monitoring, and reduces equipment maintenance costs and downtime.
Smart Images
Figure CN121994337A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of special equipment safety protection technology, specifically to an intelligent wireless overload weighing device. Background Technology
[0002] With the increasing safety requirements, enhanced functionality, and widespread digitalization of cranes, traditional overload limiters can no longer meet practical needs. In existing technologies, the instrument and sensor of overload limiters are mostly connected by cables, which not only increases the cost and difficulty of cable laying but also makes signal transmission susceptible to interference. Furthermore, upgrading traditional overload limiters requires compatibility with existing equipment, resulting in poor compatibility and limiting the product's widespread application. In addition, existing devices lack integrated acquisition capabilities for limit signals and are incompatible with sensors from different manufacturers, resulting in limited functionality and room for improvement in safety and visibility. Summary of the Invention
[0003] The purpose of this invention is to provide an intelligent wireless overload weighing device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: an intelligent wireless overload weighing device, comprising an overload signal acquisition board, an overload display control board, a display screen and a wireless device, wherein the overload signal acquisition board is mounted on a crane trolley frame and is used to acquire weight signals and limit signals output by sensors, and is compatible with self-developed sensors and external third-party sensors.
[0005] The overload display control board is installed in the driver's cab or control box, and establishes a signal connection with the overload signal acquisition board to process weight signals and limit signals, and to perform overload protection actions.
[0006] The display screen is installed in the driver's cab or on the control cabinet door and is connected to the overload display control board to display weight data, limit status and record abnormal information in real time.
[0007] The wireless device is integrated into the overload signal acquisition board and the overload display control board. The overload signal acquisition board and the overload display control board can transmit signals through wired, wireless or wired-wireless dual-channel methods.
[0008] Preferably, the overload signal acquisition board has an overload sensor interface on its right side. The overload sensor interface includes VCC / GND and Red / Black. The right side of the overload signal acquisition board is provided with positive and negative power terminals. Indicator lights are provided on the right side of both the overload signal acquisition board and the overload display control board. The sensor interface provides a physical connection and signal transmission channel between the acquisition board and the sensor. VCC / GND provides a power circuit for the sensor, and Red / Black corresponds to the sensor's signal line, ensuring stable connection between self-developed and third-party sensors and the acquisition board, solving compatibility connection problems. The positive and negative power terminals provide a standardized interface for the acquisition board and display control board to access AC220V power supply, ensuring the power supply of the core components of the equipment.
[0009] Preferably, the overload signal acquisition board and the overload display control board can transmit signals via wired, wireless, or wired-wireless dual-channel methods, which clarifies the flexible adaptability of signal transmission and provides differentiated options for different crane installation environments (such as inconvenient wiring at high altitudes, safety hazards of ground wiring, etc.), thereby reducing cable laying costs and construction difficulties.
[0010] Preferably, the overload signal acquisition board is model HTCZ-CJB and the overload display control board is model HTCZ-KZB. Both are compatible with AC220V power supply. Standardized component models facilitate production, inventory management and subsequent maintenance. Components of the same model can be directly replaced, reducing equipment maintenance costs and downtime.
[0011] Preferably, the display screen and the overload display control board transmit signals via the 232 communication protocol. The mature industrial-grade 232 serial communication protocol has the characteristics of strong anti-interference ability and stable transmission, ensuring that weight data, limit status, abnormal information, etc. are transmitted efficiently and accurately between the control board and the display screen.
[0012] Preferably, the overload signal acquisition board has a modular structure design, and the overload display control board is also used to receive and process the limit signal transmitted by the overload signal acquisition board, and feed back the limit status to the display screen in real time. The modular design reduces the size of the acquisition board, adapts to narrow installation spaces such as next to the sensor and trolley terminal box, and facilitates the individual replacement of faulty modules, thereby improving equipment maintenance efficiency.
[0013] Preferably, the display screen has an abnormal information storage function, which can trace overload-related abnormal records and store overload-related abnormal records (such as overload time, overload weight, limit trigger times, etc.) to avoid loss of abnormal information.
[0014] Compared with the prior art, the present invention provides an intelligent wireless overload weighing device, which has the following beneficial effects:
[0015] 1. This intelligent wireless overload weighing device has an overload signal acquisition board that can be adapted to both self-developed sensors and external third-party sensors. It does not require specific sensors, thus solving the problem of poor compatibility of traditional devices and expanding the applicability of the device.
[0016] 2. This intelligent wireless overload weighing device supports wired transmission, wireless transmission, or wired-wireless dual-channel transmission modes, which can be flexibly selected according to the installation environment and usage requirements of the crane, reducing cable laying costs and signal interference, and lowering installation difficulty.
[0017] 3. This intelligent wireless overload weighing device integrates weight signal acquisition, limit signal acquisition, overload protection, real-time display and abnormality recording functions. It can not only realize overload safety protection, but also allow the driver to monitor the working status of the lifting mechanism in real time. The abnormal information recording function facilitates later maintenance and accident tracing.
[0018] 4. This intelligent wireless overload weighing device, through the automatic control logic of the overload display control board, quickly disconnects the lifting circuit when the lifting weight reaches 1.1 times the rated weight, thus avoiding safety accidents caused by overload; at the same time, the integrated acquisition of limit signals further enhances the safety protection dimension of the lifting mechanism.
[0019] 5. This intelligent wireless overload weighing device features a modular overload signal acquisition board with a compact size, which can be installed next to the sensor or inside the trolley terminal box. The installation positions of the overload display control board and display screen are in line with the driver's operating habits. The overall structure is simple and easy to maintain later. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:
[0021] Figure 1 This is a schematic diagram of the overload signal acquisition board and overload sensor of the present invention.
[0022] Figure 2 This is a schematic diagram showing the overload display control board and the display screen of the present invention. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] This invention provides a technical solution:
[0025] Example 1:
[0026] Combination Figures 1-2 An intelligent wireless overload weighing device includes an overload signal acquisition board, an overload display control board, a display screen, and a wireless device. The overload signal acquisition board is mounted on the crane trolley frame and is used to acquire the weight signal and limit signal output by the sensor. It is also compatible with self-developed sensors and external third-party sensors.
[0027] The overload display control board is installed in the driver's cab or control box, and establishes a signal connection with the overload signal acquisition board to process weight signals and limit signals, and to perform overload protection actions.
[0028] The display screen is installed in the driver's cab or on the control cabinet door and is connected to the overload display control board to display weight data, limit status and record abnormal information in real time.
[0029] The wireless device is integrated into the overload signal acquisition board and the overload display control board. The overload signal acquisition board and the overload display control board can transmit signals through wired, wireless or wired-wireless dual-channel methods.
[0030] Furthermore, an overload sensor interface is provided on the right side of the overload signal acquisition board. The overload sensor interface includes VCC / GND and Red / Black. Power positive and negative terminals are provided on the right side of the overload signal acquisition board. Indicator lights are provided on the right side of both the overload signal acquisition board and the overload display control board. The sensor interface provides physical connection and signal transmission channel between the acquisition board and the sensor. VCC / GND provides a power circuit for the sensor, and Red / Black corresponds to the sensor's signal line, ensuring stable connection between self-developed and third-party sensors and the acquisition board, solving compatibility connection problems. The power positive and negative terminals provide a standardized interface for the acquisition board and display control board to access AC220V power supply, ensuring the power supply of the core components of the equipment.
[0031] Furthermore, the overload signal acquisition board and the overload display control board can transmit signals via wired, wireless, or wired-wireless dual-channel methods, demonstrating the flexibility and adaptability of signal transmission. This provides differentiated options for different crane installation environments (such as inconvenient wiring at high altitudes or safety hazards associated with ground wiring), reducing cable laying costs and construction difficulties.
[0032] Furthermore, the overload signal acquisition board is model HTCZ-CJB, and the overload display control board is model HTCZ-KZB. Both are compatible with AC220V power supply. Standardized component models facilitate production, inventory management, and subsequent maintenance. Components of the same model can be directly replaced, reducing equipment maintenance costs and downtime.
[0033] Furthermore, the display screen and the overload display control board transmit signals via the 232 communication protocol. The mature industrial-grade 232 serial communication protocol features strong anti-interference capabilities and stable transmission, ensuring efficient and accurate transmission of weight data, limit status, and abnormal information between the control board and the display screen.
[0034] Example 2:
[0035] Based on Embodiment 1, the overload signal acquisition board is further designed with a modular structure. The overload display control board is also used to receive and process the limit signal transmitted by the overload signal acquisition board and feed back the limit status to the display screen in real time. The modular design reduces the size of the acquisition board, adapts to narrow installation spaces such as next to the sensor and the terminal box of the trolley, and facilitates the individual replacement of faulty modules, thereby improving the efficiency of equipment maintenance.
[0036] Furthermore, the display screen has an abnormal information storage function, which can trace overload-related abnormal records and store overload-related abnormal records (such as overload time, overload weight, limit trigger times, etc.) to avoid loss of abnormal information.
[0037] This intelligent wireless overload weighing device features a large screen display. The tonnage display is connected to the control panel, and when the lifting weight exceeds 105% of the rated weight, the tonnage display changes from "green" to "red".
[0038] This intelligent wireless overload weighing device operates on the core logic of "signal acquisition - flexible transmission - intelligent processing - real-time feedback - safety protection." Through the coordinated operation of its four core components, it achieves accurate monitoring, visualization, and proactive protection of crane overload status. The specific workflow is as follows:
[0039] I. Signal Acquisition: Compatible Acquisition of Multiple Signal Types
[0040] 1. Installation Location and Data Acquisition Target: The overload signal acquisition board (model HTCZ-CJB) is fixed to the crane trolley frame, adjacent to the sensor installation area. Its core task is to acquire two types of key signals:
[0041] Weight signal: Real-time acquisition of the actual weight data of the load lifted by the crane through sensors;
[0042] Limit signals: Synchronously collect limit trigger signals of the hoisting mechanism (such as travel limit, safety boundary trigger, etc.).
[0043] 2. Compatibility Guarantee: The right side of the acquisition board is equipped with a standardized sensor interface (including VCC / GND power supply circuit and Red / Black signal line), which can be used with self-developed sensors and can also stably connect to external third-party sensors, solving the compatibility problem of traditional devices and sensors being tied together, and can be adapted to equipment from different manufacturers without modification.
[0044] 3. Basic support: The acquisition board is equipped with positive and negative power interfaces, which are compatible with AC220V standard power supply. The indicator light on the right side can intuitively reflect the power supply and signal acquisition status of the device. The modular design makes it compact and can be flexibly installed in small spaces such as next to the sensor or in the terminal box of the trolley.
[0045] II. Signal Transmission: Stable Transmission with Multi-Mode Adaptation
[0046] The signals captured by the acquisition board are transmitted to the overload display control board (model HTCZ-KZB) in the following manner to ensure reliability in different installation environments:
[0047] 1. Transmission Mode Selection: Supports three transmission modes, which can be flexibly switched according to the crane installation scenario (such as inconvenient wiring at height, safety hazards of ground wiring, etc.):
[0048] Wired transmission: Suitable for scenarios where cabling is convenient and transmission stability is extremely important;
[0049] Wireless transmission: Integrated wireless device eliminates the need for laying cables, reducing construction costs and the risk of signal interference;
[0050] Wired-wireless dual-channel transmission: dual protection to avoid device failure caused by a single transmission method failure.
[0051] 2. Communication Protocol Support: The display screen and the overload display control board adopt the industrial-grade 232 serial communication protocol, which has the characteristics of strong anti-interference ability and low transmission delay, ensuring efficient and accurate synchronization of weight data, limit status, abnormal information, etc.
[0052] III. Signal Processing: Intelligent Judgment and Protection Command Execution
[0053] The overload display control board (installed in the driver's cab or control box) serves as the core processing unit, undertaking two key tasks:
[0054] 1. Data parsing and status judgment: After receiving the weight signal and limit signal transmitted by the acquisition board, the data is parsed in real time to determine whether the current lifting weight exceeds the rated value and whether the limit is triggered.
[0055] 2. Overload protection action execution: The built-in automatic control logic will immediately issue a command to disconnect the crane's lifting circuit and forcibly stop the lifting action when the lifting weight reaches 1.1 times the rated weight, thus avoiding safety accidents caused by overload from the source; at the same time, it will continuously process the limit signal to provide a basis for subsequent status feedback.
[0056] IV. Information Feedback and Recording: Visualization and Traceability Guarantee
[0057] 1. Real-time visualization: The display screen is installed in the driver's cab or on the control cabinet door. After communicating with the control board, it displays three core pieces of information in real time: current weight data, limit trigger status (normal / triggered), and equipment working status, allowing the driver to intuitively grasp the operation of the lifting mechanism and assist in operational decisions;
[0058] 2. Abnormal Information Storage and Traceability: The display screen has an abnormal information storage function, which automatically records key data related to overload (such as the time of overload, the value of overload weight, the number of limit triggers, etc.), to avoid loss of abnormal information and facilitate subsequent equipment maintenance, troubleshooting and accident tracing.
[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. An intelligent wireless overload weighing device, comprising an overload signal acquisition board, an overload display control board, a display screen, and a wireless device, characterized in that: The overload signal acquisition board is mounted on the crane trolley frame and is used to acquire the weight signal and limit signal output by the sensor. It is also compatible with self-developed sensors and external third-party sensors. The overload display control board is installed in the driver's cab or control box, and establishes a signal connection with the overload signal acquisition board to process weight signals and limit signals, and to perform overload protection actions. The display screen is installed in the driver's cab or on the control cabinet door and is connected to the overload display control board to display weight data, limit status and record abnormal information in real time. The wireless device is integrated into the overload signal acquisition board and the overload display control board. The overload signal acquisition board and the overload display control board can transmit signals through wired, wireless or wired-wireless dual-channel methods.
2. The intelligent wireless overload weighing device according to claim 1, characterized in that: The overload signal acquisition board has an overload sensor interface on its right side, which includes VCC / GND and Red / Black. The right side of the overload signal acquisition board is provided with positive and negative power terminals. Indicator lights are provided on the right side of both the overload signal acquisition board and the overload display control board.
3. The intelligent wireless overload weighing device according to claim 1, characterized in that: The overload signal acquisition board and the overload display control board can transmit signals via wired, wireless, or wired-wireless dual-channel methods.
4. The intelligent wireless overload weighing device according to claim 1, characterized in that: The overload signal acquisition board is model HTCZ-CJB, and the overload display control board is model HTCZ-KZB. Both are compatible with AC220V power supply.
5. The intelligent wireless overload weighing device according to claim 1, characterized in that: The display screen and the overload display control board transmit signals via the RS-232 communication protocol.
6. The intelligent wireless overload weighing device according to claim 1, characterized in that: The overload signal acquisition board has a modular structure design, and the overload display control board is also used to receive and process the limit signal transmitted by the overload signal acquisition board, and feed back the limit status to the display screen in real time.
7. The intelligent wireless overload weighing device according to claim 1, characterized in that: The display screen has an abnormal information storage function, which can trace overload-related abnormal records.