Wireless transmission lifting capacity indicating device for truck with loading crane

Abstract

The utility model discloses a wireless transmission lifting capacity indicating device for a truck with a loading crane, and belongs to the technical field of engineering machinery control. Comprising a tension sensor which is arranged at the head of a suspension arm of the truck with the loading crane and is connected with the tail end of a steel wire rope for hoisting operation; the weighing and transmitting device is arranged at the head of a suspension arm of the truck with the loading crane, and the weighing and transmitting device is electrically connected with the tension sensor; and the receiving and controlling device is arranged on an operation table of the truck with the loading crane, and the receiving and controlling device is in radio connection with the weighing and transmitting device. Through cooperation of the tension sensor, the weighing and transmitting device and the receiving and controlling device, a traditional lifting capacity indicating system is simplified, the measuring accuracy is improved to be within 3%, the cost is reduced, oil pressure, length and angle sensors are removed, the cost is saved by more than 60%, and therefore a truck with the loading crane can be easily accepted by a user, and technology popularization is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery control, and in particular relates to a wireless transmission lifting capacity indicating device for a vehicle-mounted crane transport vehicle. Background Art

[0002] The current lifting capacity indication system of truck-mounted crane transporters relies on a complex sensor network and calculation method. Specifically, it monitors the oil pressure change through the oil pressure sensor at the boom cylinder, measures the telescopic length of the boom through the length sensor on the boom, and detects the elevation change of the boom through the angle sensor. The signals of these sensors are input to the microcontroller, which integrates these data according to the preset mechanical formula to calculate the actual lifting capacity during the lifting operation. However, there are several key problems in this process:

[0003] 1. Boom deflection error: In actual lifting operations, the boom will bend due to the pulling of the heavy object, resulting in a large difference between the values ​​measured by the length sensor and the angle sensor and the actual situation, so that the lifting weight error calculated by the mechanical formula exceeds 5%;

[0004] 2. Cost and complexity: In order to achieve the above measurements, a pull box and an angle sensor are required, which not only increases the hardware cost, but also makes the entire system more complicated, with a large number of sensors and an increased failure rate;

[0005] 3. User experience: Due to high cost, difficult maintenance and potential high failure rate, this system is not easily accepted by users, which has hindered its popularization and practical application.

[0006] Therefore, the existing lifting capacity indication system has obvious deficiencies in accuracy, cost-effectiveness and user-friendliness, and is in urgent need of improvement. Utility Model Content

[0007] The utility model aims at the above problems existing in the prior art and designs a wireless transmission lifting capacity indicating device for a vehicle-mounted crane transport vehicle with high calculation accuracy and reduced cost.

[0008] The utility model can be realized through the following technical solutions:

[0009] A wireless transmission lifting capacity indicating device for a vehicle-mounted crane transport vehicle, comprising:

[0010] A tension sensor is arranged at the head of the boom of the vehicle-mounted crane transporter and connected to the end of the wire rope used for the lifting operation;

[0011] A weighing and transmitter, which is arranged at the boom head of the vehicle-mounted crane transport vehicle, and the weighing and transmitter is connected to the tension sensor cable;

[0012] A receiver and controller, which is arranged on the operating table of the vehicle-mounted crane transport vehicle, and the receiver and controller transmit signals to the weighing and transmitter via radio;

[0013] The tension sensor converts the tension of the wire rope into an electrical signal and transmits it to the weighing and transmitter;

[0014] The weighing and transmitting device calculates and processes the electrical signal transmitted by the tension sensor and sends it to the receiving and controlling device;

[0015] After receiving the signal from the weighing and transmitter, the receiving and controller calculates and displays the lifting weight.

[0016] As a further improvement of the utility model, the tension sensor is arranged at the head of the boom, and a strain gauge arranged in a bridge type is embedded inside the tension sensor. When the tension sensor is subjected to tension, the strain gauge generates strain and converts the pressure signal into an electrical signal.

[0017] As a further improvement of the utility model, the weighing and transmitter comprises:

[0018] A first housing, which is disposed on the boom head;

[0019] A first circuit board, which is arranged in the first housing and has a first main control chip;

[0020] The first transceiver module is integrated on the first circuit board. The first transceiver module is used to receive the electrical signal transmitted by the tension sensor. The first main control chip converts the electrical signal into a radio signal after calculating and processing. The first transceiver module transmits the radio signal to the receiver and controller.

[0021] As a further improvement of the present invention, the weighing and transmitter also includes a charge and discharge management module composed of a lithium battery and a solar panel, and the charge and discharge management module is located in the first shell.

[0022] As a further improvement of the present invention, the weighing and transmitter also includes an electrical connector for connecting various components.

[0023] As a further improvement of the present invention, the receiving and controller includes:

[0024] A second housing is arranged on the vehicle operating platform;

[0025] A second circuit board, which is arranged in the second housing and has a second main control chip;

[0026] A second transceiver module, which is integrated on the second circuit board, and is used to receive the radio signal transmitted by the first transceiver module and transmit it to the second main control chip for processing;

[0027] Display screen: after the second main control chip processes the radio signal, the lifting weight value is displayed on the display screen.

[0028] As a further improvement of the present invention, the receiver and controller further includes a membrane switch, and the membrane switch is adhered to the surface of the second shell.

[0029] As a further improvement of the present invention, the membrane switch is electrically connected to the second circuit board and includes a variety of control buttons.

[0030] As a further improvement of the present invention, the receiver and controller further includes an emergency switch, and the emergency switch is arranged on the surface of the second shell.

[0031] As a further improvement of the present invention, the first shell and the second shell are respectively protected against water and dust by silicone sealing rings.

[0032] Compared with the prior art, the utility model has the following beneficial effects:

[0033] 1. Through the coordinated cooperation of tension sensors, weighing and transmitters, receivers and controllers, not only the traditional lifting weight indication system is simplified and the measurement accuracy is improved to within 3% error, but also the cost is reduced. The oil pressure, length and angle sensors are removed, and the cost is saved by more than 60%, making it easy for users of truck-mounted crane transport vehicles to accept and facilitate technology promotion;

[0034] 2. The tension sensor is arranged at the head of the boom, and a bridge-type strain gauge is embedded inside it. The mechanical strain signal is converted into an electrical signal through the strain gauge. This design not only simplifies the measurement process of the lifting weight and improves the accuracy, but also reduces the cost and complexity brought by the traditional sensor system, improves user acceptance, and provides a safer, more economical and efficient solution for the operation of the truck-mounted crane transport vehicle;

[0035] 3. The weighing and transmitter not only realizes the direct and rapid conversion and calculation of the tension signal, but also transmits the weight signal to the receiver and controller on the operating table by radio, which improves the real-time and accuracy of the operation, simplifies the system structure, reduces the cost and enhances the practicality;

[0036] 4. The weighing and transmitter also integrates an advanced energy management system in the design. The system is composed of lithium batteries and monocrystalline silicon solar panels, which is designed to provide long-term and environmentally friendly power supply for the entire device. This charge and discharge management module is cleverly integrated into the first shell to ensure that the continuous and stable power requirements of key components such as circuit boards, transceiver modules and sensors are met;

[0037] 5. The weight value can be directly displayed on the display screen, and there are multiple buttons to control the engine, work lights, radiators, horns and other electrical equipment on the vehicle-mounted lifting and transporting vehicle, and the engine and all electrical equipment can be quickly shut down in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the arrangement of the wireless transmission lifting capacity indicating device of the vehicle-mounted crane transport vehicle of the utility model;

[0039] Figure 2 It is a structural diagram of the weighing and transmitter of the utility model;

[0040] Figure 3 It is a structural diagram of the receiver and controller of the utility model;

[0041] Figure 4 It is a structural schematic diagram of the tension sensor of the utility model;

[0042] Figure 5 It is the electrical principle diagram of the weighing and transmitter of the utility model;

[0043] Figure 6 It is the electrical principle diagram of the receiver and controller of the utility model.

[0044] In the figure, 100, tension sensor;

[0045] 200, weighing and transmitter; 210, first housing; 220, first circuit board; 230, first transceiver module; 240, lithium battery; 250, solar panel; 260, electrical connector;

[0046] 300, receiving and controller; 310, second housing; 320, second circuit board; 330, second transceiver module; 340, display screen; 350, membrane switch; 360, emergency switch. DETAILED DESCRIPTION

[0047] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

[0048] like Figure 1-6As shown, the utility model provides a wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle, comprising:

[0049] A tension sensor 100, which is arranged at the head of the boom of the vehicle-mounted crane transport vehicle and connected to the end of the wire rope of the lifting operation;

[0050] A weighing and transmitting device 200 is arranged at the boom head of the vehicle-mounted crane transport vehicle, and the weighing and transmitting device 200 is connected to the tension sensor 100 through a cable;

[0051] The receiving and controller 300 is arranged on the operating table of the vehicle-mounted crane transport vehicle, and the receiving and controller 300 transmits signals to the weighing and transmitter 200 via radio.

[0052] Specifically, the main task of the tension sensor 100 is to sense and convert the tension of the steel wire rope when carrying a heavy object in real time, and convert it into an electrical signal. This conversion process is direct and efficient, avoiding the complex calculation errors caused by the traditional sensor combination. The tension sensor 100 then transmits the electrical signal to the weighing and transmitter 200;

[0053] The function of the weighing and transmitter 200 is to receive the electrical signal from the tension sensor 100, and convert the electrical signal into accurate lifting weight information through demodulation and single-chip calculation processing by the built-in circuit board. Subsequently, this processed signal is wirelessly transmitted to the receiver and controller 300 on the operating table through a radio transmission module (433MHz frequency) within a maximum range of 200 meters;

[0054] The receiving and controller 300 serves as a receiving and processing center, which receives the radio signal sent by the weighing and transmitter 200. The main chip inside the controller is responsible for calculating and processing the received signal, calculating the exact lifting weight value, and intuitively displaying it on the display screen 340.

[0055] Through the coordinated work of the above components, the device not only simplifies the traditional lifting capacity indication system and improves the measurement accuracy to within 3% error, but also reduces costs and eliminates devices such as oil pressure, length and angle sensors in traditional solutions, saving more than 60% of costs, making it easy for users of truck-mounted crane transport vehicles to accept and facilitate technology promotion.

[0056] Preferably, the tension sensor 100 is arranged at the boom head, and a bridge-arranged strain gauge (not shown) is embedded inside the tension sensor 100, that is, several sensitive metal strain gauges are embedded inside the sensor, and these strain gauges are arranged in a bridge form, so that when the crane starts to lift the heavy object, the wire rope applies a force to the tension sensor 100 through the wire rope, and this force acts on the strain gauge;

[0057] The beauty of strain gauges is that they can convert mechanical strain (i.e., small changes in the shape of an object) into electrical signals. Under the action of tension, the strain gauge will deform slightly, and this deformation changes the resistance value of the strain gauge;

[0058] Since the strain gauge is designed as a bridge circuit, the change in resistance value can be amplified and then converted into a clear electrical signal, which directly reflects the magnitude of the pulling force, that is, the actual weight of the heavy object. This electrical signal is then transmitted to the weighing and transmitter 200 connected to it through a cable. After calculation and processing, the final result is sent wirelessly to the receiver and controller 300 of the operating table, and displayed as an intuitive lifting weight value;

[0059] This design not only simplifies the measurement process of lifting weight and improves accuracy, but also reduces the cost and complexity brought by traditional sensor systems, improves user acceptance, and provides a safer, more economical and efficient solution for the operation of truck-mounted crane transport vehicles.

[0060] Preferably, the weighing and transmitter 200 comprises:

[0061] The first housing 210 is located at the head of the boom of the vehicle-mounted crane transporter and is designed to encapsulate and protect the internal electronic components to ensure that they can operate normally without damage in an outdoor working environment;

[0062] The first circuit board 220 is installed in the first housing 210 and is the core of the electronic components of the entire system. The first circuit board 220 integrates a variety of electronic components, the most important of which is the first main control chip, which is responsible for signal reception, processing and calculation;

[0063] The first transceiver module 230, which is integrated on the first circuit board 220, is the key to signal transmission. It has two main functions:

[0064] 1. Receive the electrical signal transmitted by the tension sensor 100 through the cable. This electrical signal directly represents the tension borne by the wire rope, that is, the weight of the hoisted object;

[0065] 2. The first main control chip quickly and accurately calculates and processes the electrical signal, converting the pulling force into an accurate lifting weight value. Subsequently, this value will be converted into a radio signal and sent out in real time by the first transceiver module 230 through a radio frequency of 433 MHz. The transmission range is limited to 200 meters to ensure that the data stably reaches the receiver and controller 300.

[0066] Through the above design, the weighing and transmitter 200 not only realizes the direct and rapid conversion and calculation of the tension signal, but also transmits it wirelessly to the receiver and controller 300 on the operating table to display the lifting weight, thereby improving the real-time and accuracy of the operation, while also simplifying the system structure, reducing costs and enhancing practicality.

[0067] Preferably, the weighing and transmitter 200 is also integrated with an advanced energy management system in the design. The system is composed of a lithium battery 240 and a monocrystalline silicon solar panel 250, and is intended to provide a long-term and environmentally friendly power supply for the entire device. This charge and discharge management module is cleverly integrated into the first housing 210, ensuring that the continuous and stable power requirements of key components such as circuit boards, transceiver modules and sensors are met;

[0068] Specifically, the solar panel 250 uses natural sunlight to charge, converts sunlight energy into electrical energy and stores it in the lithium battery 240, so that the weighing and transmitter 200 can continue to operate even without an external power supply. The lithium battery 240 has an intelligent charge and discharge management function, which can automatically adjust the charging rate, effectively extend the battery life, prevent overcharging and over-discharging, and ensure the efficiency and safety of power supply;

[0069] This design not only enables the system to power itself when operating outdoors, reducing dependence on external power sources, but also reduces operating costs. It also complies with the concept of green environmental protection and improves the portability and practical value of the entire device.

[0070] Preferably, the weighing and transmitter 200 further includes an electrical connector 260 for connecting the various components to ensure the stability of the electrical connection between the various components and the smooth transmission of the signal.

[0071] Preferably, the receiving and controller 300 includes:

[0072] The second housing 310 is located on the vehicle operating table and serves as the housing of the receiver and controller 300 to protect the internal circuit board, display screen 340 and other components from the external environment;

[0073] The second circuit board 320 is disposed in the second housing 310 and is the core of the receiver and controller 300. It integrates a variety of electronic components, including a second main control chip. The main control chip is the core of signal processing and calculation and is responsible for the execution of calculation display and control functions.

[0074] A second transceiver module 330, which is integrated on the second circuit board 320, and is used to receive electrical signals wirelessly transmitted from the weighing and transmitter 200 (the first transceiver module 230). Once the signal is received, the second transceiver module 330 transmits the radio signal to the second main control chip for further processing;

[0075] The display screen 340 is directly connected to the second circuit board 320 and is a window for visually displaying the lifting weight value. After receiving and processing the radio signal, the second main control chip will display the calculated lifting weight value on the display screen 340 in real time, which is convenient for the operator to read visually.

[0076] Preferably, the receiver and controller 300 further includes a membrane switch 350, which is directly attached to the surface of the second housing 310. The membrane switch 350 is characterized by compact structure, waterproof and dustproof, and suitable for outdoor or industrial environments. It has multiple control buttons, including but not limited to "power, start, flameout, lighting, heat dissipation, horn, forced" and other functions, and is used for engines, work lights, radiators, horns and other equipment;

[0077] The membrane switch 350 is connected to the control circuit on the second circuit board 320 through a conductive contact. When the operator presses a key, the corresponding signal will be recognized by the second main control chip and the corresponding operation will be performed, such as adjusting the display content, sending control instructions to related electrical components, etc., so as to achieve precise control of the vehicle-mounted crane transport vehicle;

[0078] This design not only simplifies the operating process, but also improves work efficiency and safety, making the entire system more user-friendly.

[0079] Preferably, the receiver and controller 300 also includes an emergency switch 360, which is arranged on the surface of the second shell 310. The design purpose is mainly to enable the operator to take immediate action when encountering a sudden dangerous situation, and quickly cut off all power sources of the crane, including the engine and all electrical equipment, to prevent the accident from expanding or reduce possible damage.

[0080] Preferably, the first shell 210 and the second shell 310 are respectively protected against water and dust by silicone sealing rings. The silicone sealing ring is a high-performance sealing material with good weather resistance, high and low temperature resistance, aging resistance and elasticity, and can adapt to various harsh working environments. Through such a design, whether it is the weighing and transmitter 200 installed on the head of the boom that is easily affected by the external environment, or the receiving and controller 300 located on the operating table that also needs to prevent accidental splashing water and dust intrusion, it can ensure that its good working performance is maintained under various working conditions, thereby improving the safety and reliability of the entire vehicle-mounted crane and transport vehicle operation.

[0081] The technical means disclosed in the scheme of the utility model are not limited to the technical means disclosed by the above technical means, but also include technical solutions composed of any combination of the above technical features. The above is a specific implementation method of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

[0082] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0083] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0084] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle, characterized in that: include: A tension sensor is arranged at the head of the boom of the vehicle-mounted crane transporter and connected to the end of the wire rope used for the lifting operation; A weighing and transmitting device, which is arranged at the boom head of the vehicle-mounted crane transport vehicle, and the weighing and transmitting device is electrically connected to the tension sensor; A receiver and controller, which is arranged on the operating table of the vehicle-mounted crane transport vehicle, and the receiver and controller is connected to the weighing and transmitter by radio; The tension sensor converts the tension of the wire rope into an electrical signal and transmits it to the weighing and transmitter; The weighing and transmitter calculates and processes the electrical signal transmitted by the tension sensor, and then wirelessly transmits it to the receiving and controller; After receiving the signal from the weighing and transmitter, the receiving and controller calculates and displays the lifting weight.

2. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 1 is characterized in that: The tension sensor is arranged at the head of the boom, and a strain gauge arranged in a bridge type is embedded in the interior of the tension sensor. When the tension sensor is subjected to tension, the strain gauge generates strain and converts the strain into an electrical signal.

3. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 1 is characterized in that: The weighing and transmitter comprises: A first housing, which is disposed on the boom head; A first circuit board, which is arranged in the first housing and has a first main control chip; The first transceiver module is integrated on the first circuit board. The first transceiver module is used to receive the electrical signal transmitted by the tension sensor. The first main control chip converts the electrical signal into a radio signal after calculating and processing. The first transceiver module transmits the radio signal to the receiver and controller.

4. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 3 is characterized in that: The weighing and transmitting device further comprises a charge and discharge management module composed of a lithium battery and a solar panel, and the charge and discharge management module is located in the first shell.

5. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 3 is characterized in that: The weighing and transmitting device also includes an electrical connector for connecting various components.

6. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 3 is characterized in that: The receiving and controlling device comprises: A second housing is arranged on the vehicle operating platform; A second circuit board, which is arranged in the second housing and has a second main control chip; A second transceiver module, which is integrated on the second circuit board, and is used to receive the radio signal transmitted by the first transceiver module and transmit it to the second main control chip for processing; Display screen: after the second main control chip processes the radio signal, the lifting weight value is displayed on the display screen.

7. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 6 is characterized in that: The receiver and controller further comprises a membrane switch, and the membrane switch is adhered to the surface of the second shell.

8. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 7 is characterized in that: The membrane switch is electrically connected to the second circuit board and includes a variety of control buttons.

9. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 6, characterized in that: The receiver and controller also includes an emergency switch, which is arranged on the surface of the second shell.

10. The wireless transmission lifting capacity indication device for a vehicle-mounted crane transport vehicle according to claim 6, characterized in that: The first shell and the second shell are respectively protected against water and dust by silicone sealing rings.

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