Electric dual control brake system for remote control loader

Abstract

The utility model discloses a kind of electrical double control brake systems of remote control loader, it belongs to engineering machinery technical field.It solves the defect that human driving control cannot adapt to narrow space operation, operation under dangerous environment in the conventional loader braking of prior art.Its main structure includes air source assembly, air source assembly is connected with parking component and control component respectively, control component is also connected with the execution component for controlling vehicle brake, control component includes gas brake valve, relay valve, proportional solenoid valve and shuttle valve, the air outlet of air source assembly is connected with gas brake valve, relay valve and proportional solenoid valve respectively, gas brake valve is connected in parallel with relay valve, and the two air inlets of shuttle valve are connected with gas brake valve and relay valve respectively, the signal end of relay valve is also connected with proportional solenoid valve.The utility model is mainly used on loader and other engineering machinery.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery technology, and more specifically, it relates to an electrical dual-control braking system for a remote-controlled loader. Background Technology

[0002] Currently, most loader braking control systems rely on manual braking. However, with the development of IoT technology, remotely controlled loaders have emerged. Compared to traditional loaders that require manual operation, remotely controlled loaders can improve the working environment and comfort of operators, avoid workers entering harsh working conditions, and protect their health.

[0003] The working principle of existing loader brakes is as follows: ordinary loader brakes are mainly operated by the driver, who controls the vehicle brakes by stepping on the air brake valve. Therefore, the existing technology has the following disadvantages: 1) The existing loader brake control method is basically manual driving control, and the operation method is relatively traditional; 2) In some special operation scenarios, such as operation in confined spaces, operation in dangerous environments, or operation environments that require high-precision positioning, traditional braking systems cannot fully meet the operation requirements due to their inherent limitations; 3) Drivers may experience fatigue during long-term operation, which not only affects work efficiency but may also bring safety hazards. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an electrical dual-control braking system for a remote-controlled loader.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] An electrical dual-control braking system for a remote-controlled loader includes an air source assembly connected to a parking assembly and a control assembly. The control assembly is also connected to an actuator for controlling the vehicle's brakes. The control assembly includes an air brake valve, a relay valve, a proportional solenoid valve, and a shuttle valve. The air outlet of the air source assembly is connected to the air brake valve, the relay valve, and the proportional solenoid valve, respectively. The air brake valve and the relay valve are connected in parallel. The two air inlets of the shuttle valve are connected to the air brake valve and the relay valve, respectively. The signal terminal of the relay valve is also connected to the proportional solenoid valve.

[0007] Preferably, the signal terminal of the proportional solenoid valve is connected to the controller ECU, and one oil circuit of the relay valve is connected to the controller ECU through a pressure sensor. The controller ECU is also connected to a receiver. An electrical signal is sent to the proportional solenoid valve through a remote control device, which controls the relay valve to open, transmitting air pressure to the actuator to control the vehicle braking. When the signal to the proportional solenoid valve stops, the proportional solenoid valve closes, the relay valve closes, and the vehicle returns to normal operation.

[0008] Preferably, the actuation component includes a booster pump, a reservoir, and a brake caliper. The air outlet of the shuttle valve is connected to the large chamber of the booster pump and the signal terminal of the switching valve, respectively. The small chamber of the booster pump is connected to the brake caliper and the reservoir, respectively. The brake caliper is also connected to the reservoir via the switching valve.

[0009] Preferably, a one-way valve is provided between the small chamber of the booster pump and the brake caliper.

[0010] Preferably, an oil filter is provided between the switching valve and the brake caliper.

[0011] Preferably, the air source assembly includes an air compressor, an oil-water separator combination valve, and an air storage tank connected in series, with the air outlet of the air storage tank connected to an air brake valve, a relay valve, and a proportional solenoid valve, respectively.

[0012] Preferably, the gas storage tank is also connected to a pressure gauge and a safety valve.

[0013] Preferably, the parking assembly includes a brake solenoid valve and a parking brake chamber, with the two ends of the brake solenoid valve connected to the outlet of the parking brake chamber and the air tank, respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a proportional solenoid valve and a relay valve to achieve the purpose of remote control braking. It has a low operating cost and retains the purely mechanical operation of the brake pedal. In the event of a failure in remote control, it does not affect the manual operation of the vehicle. It can more reliably realize the combination of manual and remote control. Based on the existing vehicle, it increases the vehicle's operation mode and provides customers with more choices.

[0016] 2. Installing a remote control module in parallel on the existing braking system requires minimal modification and does not affect the product's performance parameters. This allows for rapid retrofitting and enables remote braking without altering the original vehicle parameters, making it suitable for quick upgrades.

[0017] In summary, this utility model transmits signals to a receiver via a remote control device. After receiving the signal, the receiver transmits it to the controller ECU for processing. The controller ECU then transmits signals to the proportional solenoid valve to control whether the air pressure is transmitted to the actuator. A pressure sensor is used to detect the brake air pressure output by the proportional solenoid valve and the relay valve, and compares it with the air pressure output by the controller ECU to form a control closed loop. This monitors the operation of the control components and achieves the purpose of remote control. This allows the driver to operate the vehicle from inside or remotely, making the operation more flexible. The driver can choose different driving modes according to the actual situation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the control component in this utility model;

[0020] Figure 3 This is a schematic diagram of the braking control of this utility model.

[0021] In the diagram: 1. Air source assembly; 11. Air compressor; 12. Oil-water separator combination valve; 13. Pressure gauge; 14. Safety valve; 15. Air tank;

[0022] 2. Parking assembly; 21. Brake solenoid valve; 22. Parking brake air chamber;

[0023] 3. Control components; 31. Pneumatic brake valve; 32. Relay valve; 33. Pressure sensor; 34. Proportional solenoid valve; 35. Shuttle valve;

[0024] 4. Actuation components; 41. Power pump; 42. Oil reservoir; 43. Switch valve; 44. Oil filter; 45. Brake caliper; 46. Check valve;

[0025] 5. Controller ECU; 6. Receiver; 7. Remote control device. Detailed Implementation

[0026] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

[0027] Example 1:

[0028] like Figure 1-2 As shown, an electrical dual-control braking system for a remote-controlled loader includes an air source component 1, which is connected to a parking component 2 and a control component 3. The control component 3 is also connected to an actuator 4 for controlling the vehicle's brakes. The control component 3 includes an air brake valve 31, a relay valve 32, a proportional solenoid valve 34, and a shuttle valve 35. The air outlet of the air source component 1 is connected to the air brake valve 31, the relay valve 32, and the proportional solenoid valve 34, respectively. The air brake valve 31 and the relay valve 32 are connected in parallel, and the two air inlets of the shuttle valve 35 are connected to the air brake valve 31 and the relay valve 32, respectively. The signal terminal of the relay valve 32 is also connected to the proportional solenoid valve 34.

[0029] In this embodiment, the control component 3 is mainly responsible for controlling the air pressure output to the actuator 4, enabling the actuator 4 to operate and achieve the braking purpose. The control component 3 is divided into manual control and remote control. When the driver is in the vehicle, braking can be achieved by stepping on the air brake valve 31; when remotely controlled, the remote control device 7 sends a signal to the receiver 6, which transmits the signal to the controller ECU 5. The controller ECU 5 controls the proportional solenoid valve 34 to open via an electrical signal, thereby controlling the relay valve 32 to operate, outputting air pressure to achieve the same effect as stepping on the brake valve. The shuttle valve 35 plays a selection role in the control component 3. When the air pressure is manually or remotely controlled, it is selected by the shuttle valve 35 and then output to the actuator 4.

[0030] Example 2:

[0031] like Figure 3 As shown, an electrical dual-control braking system for a remote-controlled loader differs from Embodiment 1 in that the signal terminal of the proportional solenoid valve 34 is connected to the controller ECU 5, and one oil circuit of the relay valve 32 is connected to the controller ECU 5 via a pressure sensor 33. The controller ECU 5 is also connected to the receiver 6. An electrical signal is sent to the proportional solenoid valve 34 via the remote control device 7, causing the proportional solenoid valve 34 to control the opening of the relay valve 32, transmitting air pressure to the actuator 4 to control vehicle braking. When the signal to the proportional solenoid valve 34 stops, the proportional solenoid valve 34 closes, the relay valve 32 closes, and the vehicle returns to normal operation. The pressure sensor 33 is used to detect the braking air pressure output by the proportional solenoid valve 34 and the relay valve 32, comparing it with the air pressure output by the controller ECU 5 to form a control closed loop and monitor the operation of the control assembly 3.

[0032] Furthermore, the actuator 4 includes a booster pump 41, a reservoir 42, and a brake caliper 45. The outlet of the shuttle valve 35 is connected to the large chamber of the booster pump 41 and the signal terminal of the switching valve 43, respectively. The small chamber of the booster pump 41 is connected to the brake caliper 45 and the reservoir 42, respectively. The brake caliper 45 is also connected to the reservoir 42 via the switching valve 43. A one-way valve 46 is provided between the small chamber of the booster pump 41 and the brake caliper 45. An oil filter 44 is provided between the switching valve 43 and the brake caliper 45. The main function of the actuator 4 is to control the vehicle's braking.

[0033] Furthermore, the air supply assembly 1 includes an air compressor 11, an oil-water separator combination valve 12, and an air tank 15 connected in series. The air outlet of the air tank 15 is connected to the air brake valve 31, the relay valve 32, and the proportional solenoid valve 34, respectively. A pressure gauge 13 and a safety valve 14 are also connected to the air tank 15. The main function of the air supply assembly 1 is to provide air pressure for the entire braking system and store a certain amount of pressure to prepare for controlling the braking system.

[0034] Furthermore, the parking assembly 2 includes a brake solenoid valve 21 and a parking brake chamber 22. The two ends of the brake solenoid valve 21 are connected to the parking brake chamber 22 and the air outlet of the air tank 15, respectively. The main function of the parking assembly 2 is to keep the vehicle stationary when it stops working.

[0035] The working principle of this utility model is as follows:

[0036] When manually operated, when the operator presses the brake pedal, the air pressure provided by the air source assembly 1 is transmitted to the brake caliper 45 through the air brake valve 31 and the shuttle valve 35 to control the vehicle braking. When the operator releases the brake pedal, the vehicle returns to normal operation.

[0037] When remotely controlled, the operator sends a signal to the receiver 6 through the remote control device 7. The receiver 6 transmits the signal to the controller ECU 5. The controller ECU 5 controls the proportional solenoid valve 34 to open via an electrical signal. The proportional solenoid valve 34 controls the relay valve 32 to open. The air pressure provided by the air source assembly 1 is transmitted to the brake caliper 45 through the relay valve 32 and the shuttle valve 35 to control the vehicle braking. When the operator stops sending a signal to the proportional solenoid valve 34, the proportional solenoid valve 34 closes, the relay valve 32 closes, and the vehicle returns to normal operation.

Claims

1. An electrically dual brake system for a remotely controlled loader comprising an air supply assembly (1), characterized in that: The air source assembly (1) is connected to the parking assembly (2) and the control assembly (3) respectively. The control assembly (3) is also connected to an actuator (4) for controlling the vehicle brake. The control assembly (3) includes an air brake valve (31), a relay valve (32), a proportional solenoid valve (34) and a shuttle valve (35). The air outlet of the air source assembly (1) is connected to the air brake valve (31), the relay valve (32) and the proportional solenoid valve (34) respectively. The air brake valve (31) and the relay valve (32) are connected in parallel. The two air inlets of the shuttle valve (35) are connected to the air brake valve (31) and the relay valve (32) respectively. The signal terminal of the relay valve (32) is also connected to the proportional solenoid valve (34).

2. The electrical dual-control braking system of the remote-controlled loader according to claim 1, characterized in that: The signal terminal of the proportional solenoid valve (34) is connected to the controller ECU (5). One oil circuit of the relay valve (32) is connected to the controller ECU (5) through the pressure sensor (33). The controller ECU (5) is also connected to the receiver (6). The proportional solenoid valve (34) is given an electrical signal through the remote control device (7). The proportional solenoid valve (34) controls the relay valve (32) to open, and transmits the air pressure to the actuator (4) to control the vehicle braking. When the signal to the proportional solenoid valve (34) stops, the proportional solenoid valve (34) closes, the relay valve (32) closes, and the vehicle returns to normal operation.

3. The electrical dual-control braking system of the remote-controlled loader according to claim 2, characterized in that: The actuator (4) includes a booster pump (41), a reservoir (42) and a brake caliper (45). The outlet of the shuttle valve (35) is connected to the large chamber of the booster pump (41) and the signal terminal of the switch valve (43) respectively. The small chamber of the booster pump (41) is connected to the brake caliper (45) and the reservoir (42) respectively. The brake caliper (45) is also connected to the reservoir (42) through the switch valve (43).

4. The electrical dual-control braking system of the remote-controlled loader according to claim 3, characterized in that: A one-way valve (46) is provided between the small cavity of the booster pump (41) and the brake caliper (45).

5. The electrical dual-control braking system of the remote-controlled loader according to claim 3, characterized in that: An oil filter (44) is provided between the switching valve (43) and the brake caliper (45).

6. The electrical dual-control braking system of the remote-controlled loader according to any one of claims 1-5, characterized in that: The air source assembly (1) includes an air compressor (11), an oil-water separator combination valve (12), and an air storage tank (15) connected in series. The air outlet of the air storage tank (15) is connected to an air brake valve (31), a relay valve (32), and a proportional solenoid valve (34), respectively.

7. The electrical dual-control braking system of the remote-controlled loader according to claim 6, characterized in that: The gas storage tank (15) is also connected to a pressure gauge (13) and a safety valve (14).

8. The electrical dual-control braking system of the remote-controlled loader according to claim 6, characterized in that: The parking assembly (2) includes a brake solenoid valve (21) and a parking brake chamber (22). The two ends of the brake solenoid valve (21) are connected to the parking brake chamber (22) and the air outlet of the air tank (15), respectively.

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