Safety control system of loading machine

Abstract

The utility model belongs to the technical field of loaders, and particularly relates to a safety control system of a loader, which comprises a vehicle body, a controller arranged on the vehicle body, and a plurality of cameras, a plurality of radars, a display screen, an alarm device and a brake unit electrically connected with the controller; the plurality of cameras are used for acquiring environment images around the vehicle body and transmitting acquired image signals to the controller; the radars are used for detecting the distance between the vehicle body and an obstacle and transmitting distance signals to the controller. The controller is used for receiving an image signal acquired by the camera and transmitting an image to the display screen for displaying, and the controller is also used for receiving a distance signal of the radar and controlling the alarm device to give an alarm prompt according to the distance signal or controlling the braking unit to brake emergently according to the distance signal; the control safety of the loading machine is improved, and the driving safety of the loading machine under complex road conditions is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of loader technology, and specifically relates to a safety control system for a loader. Background Technology

[0002] Loaders are large vehicles with long and tall bodies, resulting in numerous blind spots. Currently, when driving a loader, drivers typically rely on interior and exterior rearview mirrors to observe the surroundings and on reversing cameras and parking sensors to determine if there are obstacles behind. While rearview mirrors and parking sensors can ensure driving safety to some extent, ordinary reversing camera systems only show one side of the rear, leaving significant blind spots in front of and to the sides of the vehicle, making it difficult to guarantee driving safety in complex road conditions. Utility Model Content

[0003] The purpose of this utility model is to provide a safety control system for a loader, so as to improve the operation safety of the loader and ensure the driving safety of the loader in complex road conditions.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A safety control system for a loader includes a vehicle body, a controller mounted on the vehicle body, and several cameras, several radars, a display screen, an alarm device, and a braking unit electrically connected to the controller. The cameras are used to acquire environmental images around the vehicle body and transmit the acquired image signals to the controller. The radars are used to detect the distance between the vehicle body and obstacles and transmit the distance signals to the controller. The controller receives the image signals acquired by the cameras and transmits the images to the display screen for display. The controller also receives the distance signals from the radars and controls the alarm device to issue an alarm prompt based on the distance signals, or controls the braking unit to apply emergency braking based on the distance signals.

[0006] Furthermore, when the radar detects that the distance between the vehicle body and the obstacle is less than 0.5m, the controller controls the alarm device to issue an alarm prompt; when the radar detects that the distance between the vehicle body and the obstacle is less than 0.3m, the controller controls the braking unit to apply emergency braking.

[0007] Furthermore, the braking unit includes a frequency converter air pump and a pressure sensor electrically connected to the controller. The pressure sensor is used to detect the air pressure of the braking unit and transmit the pressure signal to the controller. The controller is used to receive the pressure signal from the pressure sensor and control the frequency converter air pump to adjust the gas flow rate of the braking unit according to the pressure signal, so as to ensure that the air pressure of the braking unit is maintained at 0.7-0.8MPa.

[0008] Furthermore, the vehicle body (1) is also equipped with an instrument panel that is electrically connected to the controller. The controller is also used to transmit the air pressure value detected by the pressure sensor to the instrument panel for display. When the air pressure value detected by the pressure sensor is less than 0.4MPa, the controller controls the instrument panel to flash to issue an alarm prompt and controls the braking unit to brake in an emergency.

[0009] Furthermore, the vehicle body is also equipped with a braking mode switching button, which is used to switch between automatic braking mode and mechanical braking mode.

[0010] Furthermore, the vehicle body is equipped with a driver's cab, and the controller, display screen, alarm device, instrument panel and braking mode switching button are all located in the driver's cab. There are four cameras and four radars, which are respectively installed at the front, left, right and rear of the vehicle body.

[0011] Furthermore, the braking unit employs a wet brake.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This invention, by installing a camera and display screen on the vehicle body, allows the operator to observe the surroundings of the loader from the cab. Combined with radar and alarm devices, it enables the operator to quickly identify obstacles in the surrounding area. By incorporating a variable frequency air pump and pressure sensor, the pressure of the braking unit can be kept stable. Furthermore, through the controller working in conjunction with the braking unit, automatic braking can be achieved when the loader encounters an emergency, such as when the loader is too close to an obstacle, or when the braking unit pressure suddenly drops sharply during driving, ensuring the operator's driving safety and achieving fully intelligent parking. This improves maneuverability, making operation convenient and quick for the operator, effectively ensuring the safety of the loader in complex road conditions, and changing the existing loader control mode that relies entirely on mechanical braking, making it more intelligent. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] In the diagram: 1. Vehicle body; 2. Cab; 3. Mounting point; 4. Braking mode switch button. Detailed Implementation

[0016] The following detailed description illustrates the specific implementation method:

[0017] Example

[0018] like Figure 1As shown, a safety control system for a loader includes a vehicle body 1, a cab 2 on the vehicle body 1, a controller, a display screen, an alarm device, and an instrument panel inside the cab 2. The vehicle body 1 also has four cameras, four radars, and a braking unit. The four cameras and four radars are respectively mounted at four mounting points 3 on the front, rear, left, and right sides of the vehicle body 1. The controller is electrically connected to the cameras, radars, display screen, alarm device, instrument panel, and braking unit. The cameras are used to acquire environmental images around the vehicle body 1 and transmit the acquired image signals to the controller. The radars are used to detect the distance between the vehicle body 1 and obstacles and transmit the distance signals to the controller. The controller receives the image signals acquired by the cameras and transmits the images to the display screen for display. The controller also receives the distance signals from the radar and controls the alarm device to issue an alarm prompt based on the distance signal, or controls the braking unit to apply emergency braking based on the distance signal. When the radar detects that the distance between the vehicle body 1 and an obstacle is less than 0.5m, the controller controls the alarm device to issue an alarm prompt; when the radar detects that the distance between the vehicle body 1 and an obstacle is less than 0.3m, the controller controls the braking unit to apply emergency braking.

[0019] The braking unit employs a wet brake system. It includes a variable frequency air pump and a pressure sensor electrically connected to the controller. The pressure sensor detects the air pressure in the braking unit and transmits the pressure signal to the controller. The controller receives the pressure signal from the sensor and transmits it to the instrument panel display. Simultaneously, based on the pressure signal, it controls the variable frequency air pump to adjust the air flow rate in the braking unit, ensuring the air pressure is maintained between 0.7-0.8 MPa. When the pressure sensor detects an air pressure below 0.4 MPa, the controller controls the instrument panel to flash as an alarm, and simultaneously initiates emergency braking. The brake pads of the wet brake are enclosed within the axle housing and immersed in gear oil, relying on oil circulation for heat dissipation. This design is more advantageous for loader operation in mines. The wet brake is a fully sealed structure, ensuring it remains uncontaminated and requires no maintenance.

[0020] like Figure 1 As shown, the cab 2 of the vehicle body 1 is also equipped with a braking mode switching button 4. The braking mode switching button 4 is used to switch between automatic braking mode and mechanical braking mode. When the above-mentioned controller, radar, camera, pressure sensor and other components fail, the operator can switch the loader to mechanical braking mode through the braking mode switching button 4 and manually pull the handbrake to brake the loader, so as to prevent the loader from failing to brake due to component damage.

[0021] The safety control system disclosed in this utility model allows the operator to observe the surroundings of the loader through a display screen in the cab 2. Radar and alarm devices enable rapid detection of obstacles. During operation, the operator can adjust driving based on the surrounding conditions, effectively handling complex road conditions and improving driving safety. During operation, a variable frequency air pump and pressure sensor work together to maintain stable pressure in the braking unit. In emergency situations, such as when the loader is too close to an obstacle or when the braking unit pressure suddenly drops, the controller and braking unit work together to automatically brake, ensuring operator safety and achieving fully intelligent parking. This improves maneuverability, making operation convenient and quick, effectively ensuring the loader's safety in complex road conditions. It changes the existing loader control mode that relies entirely on mechanical braking, making it more intelligent. If the controller or other components fail, the operator can switch to mechanical braking mode via the braking mode switch button 4, manually pulling the handbrake to mechanically lock the braking unit, thus achieving braking of the loader.

[0022] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A safety control system for a loader, comprising a vehicle body (1), characterized in that: The vehicle body (1) is equipped with a controller, and several cameras, several radars, a display screen, an alarm device, and a braking unit electrically connected to the controller; the several cameras are used to acquire environmental images around the vehicle body (1) and transmit the acquired image signals to the controller; the several radars are used to detect the distance between the vehicle body (1) and obstacles and transmit the distance signals to the controller; the controller is used to receive the image signals acquired by the cameras and transmit the images to the display screen for display, and the controller is also used to receive the distance signals from the radar and control the alarm device to issue an alarm prompt according to the distance signals, or control the braking unit to brake urgently according to the distance signals.

2. The safety control system for the loader according to claim 1, characterized in that: When the radar detects that the distance between the vehicle body (1) and the obstacle is less than 0.5m, the controller controls the alarm device to issue an alarm prompt. When the radar detects that the distance between the vehicle body (1) and the obstacle is less than 0.3m, the controller controls the braking unit to brake urgently.

3. The safety control system for a loader according to claim 1 or 2, characterized in that: The braking unit includes a variable frequency air pump and a pressure sensor electrically connected to the controller. The pressure sensor is used to detect the air pressure of the braking unit and transmit the pressure signal to the controller. The controller is used to receive the pressure signal from the pressure sensor and control the variable frequency air pump to adjust the gas flow of the braking unit according to the pressure signal, so as to ensure that the air pressure of the braking unit is maintained at 0.7-0.8MPa.

4. The safety control system for the loader according to claim 3, characterized in that: The vehicle body (1) is also equipped with an instrument panel that is electrically connected to the controller. The controller is also used to transmit the air pressure value detected by the pressure sensor to the instrument panel for display. When the air pressure value detected by the pressure sensor is less than 0.4MPa, the controller controls the instrument panel to flash to issue an alarm prompt and controls the braking unit to brake in an emergency.

5. The safety control system for a loader according to claim 4, characterized in that: The vehicle body (1) is also provided with a braking mode switching button (4), which is used to switch between automatic braking mode and mechanical braking mode.

6. The safety control system for a loader according to claim 5, characterized in that: The vehicle body (1) is equipped with a driver's cab (2), and the controller, display screen, alarm device, instrument panel and braking mode switching button (4) are all located in the driver's cab (2). There are four cameras and four radars, which are respectively installed in front, left, right and rear of the vehicle body (1).

7. The safety control system for a loader according to claim 1, characterized in that: The braking unit uses a wet brake.

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