Unmanned braking system

Abstract

The utility model discloses an unmanned braking system which comprises an oil supply device, a prefill valve, a parking brake, an energy accumulator, a two-way brake and an electric proportional valve set. The prefill valve is connected with the parking brake, the energy accumulator, the two-way brake and the electric proportional valve set through pipelines. Hydraulic oil is divided into three paths through a prefill valve to respectively flow to a parking brake, an energy accumulator, a double-path brake and an electric proportional valve set, and the braking requirements of unmanned driving and actual control modes are met.

Description

Technical Field

[0001] This utility model belongs to the field of braking system technology, and specifically relates to an unmanned driving braking system. Background Technology

[0002] As core equipment in modern construction engineering systems, engineering vehicles significantly improve construction efficiency due to their high-efficiency operation characteristics, fundamentally changing the traditional manual labor mode. These specialized machines demonstrate outstanding performance in material transportation, earthmoving, emergency repairs, and even military engineering. Their multi-scenario applications not only reflect the breakthrough development of industrial machinery technology but also fully demonstrate the remarkable efficiency of modern mechanical engineering and technological innovation.

[0003] Currently, most construction machinery is operated by workers in the cab using control panels. Due to the enclosed environment and limited field of vision in the cab, it is difficult to have a clear overall grasp of the situation at the construction site. When the robotic arm or other objects obstruct the line of sight between the workers and the construction site, it can easily reduce construction efficiency. If the on-site command and coordination are inadequate, it can even lead to construction accidents in severe cases.

[0004] The application of wireless remote control technology can completely solve the above problems, freeing operators from the constraints of the cab and allowing them to freely move around the construction site to observe and remotely control the construction machinery, thereby improving work efficiency and safety. However, the braking methods of wireless remote control and actual operator control differ, so a new braking system is needed to simultaneously meet the braking requirements of both unmanned driving and actual operation. Utility Model Content

[0005] The purpose of this invention is to propose an unmanned driving braking system that meets the braking requirements of both unmanned driving and actual control modes.

[0006] Therefore, this utility model provides an unmanned driving braking system, including an oil supply device, a filling valve, a parking brake, an accumulator, a dual-path brake, and an electro-proportional valve group. The oil supply device is connected to the filling valve through a pipeline, and the filling valve is connected to the parking brake, the accumulator, the dual-path brake, and the electro-proportional valve group through a pipeline.

[0007] Preferably, the oil supply device includes a hydraulic oil tank, a gear pump, and a filter. The hydraulic oil tank and the gear pump are connected through a pipeline, the gear pump and the filter are connected through a pipeline, and the filter and the filling valve are connected through a pipeline.

[0008] Preferably, the oil supply device further includes an overflow valve and a return oil filter, wherein the overflow valve is connected to the filter via a pipeline, the overflow valve is connected to the return oil filter via a pipeline, and the return oil filter is connected to the hydraulic oil tank via a pipeline.

[0009] Preferably, the hydraulic oil tank is equipped with a breather.

[0010] Preferably, one end of the hydraulic oil tank is provided with a hydraulic oil tank drain port.

[0011] Preferably, a tank indicator is provided at one end of the hydraulic oil tank.

[0012] Preferably, the dual-path brake and the electric proportional valve group includes an electric proportional brake valve, a brake valve group and an axle. The electric proportional brake valve is connected to the filling valve through a pipeline. The brake valve group is connected to the filling valve through a pipeline. The electric proportional brake valve and the brake valve group are connected through a pipeline. The brake valve group and the axle are connected through a pipeline.

[0013] Preferably, the electro-proportional braking valve is provided with a pilot control valve.

[0014] Preferably, the brake valve assembly is equipped with a brake pressure switch.

[0015] Preferably, the filling valve is equipped with an accumulator low-pressure alarm switch.

[0016] Beneficial effects:

[0017] 1. This utility model provides an unmanned driving braking system, in which hydraulic oil is distributed in three directions through a filling valve to the parking brake, accumulator, dual-path brake and electro-proportional valve group, thereby meeting the braking requirements of both unmanned driving and actual control modes.

[0018] 2. In this utility model, the conversion between pressure and pedal force is achieved through a pilot control valve, and the wireless remote control device remotely controls the control valve to control the dual-path brake valve to control the brake. When the remote brake valve pedal is pressed, the dual-path brake valve is activated for braking.

[0019] 3. The structure of this utility model is highly versatile, its functions are easy to implement, and it is expandable, making it suitable for use in mining transport trucks, personnel carriers, ground loaders, etc. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 Piping diagram of Embodiment 1 of an unmanned driving braking system provided by this utility model.

[0022] Figure 2 A schematic diagram of the pilot control valve of Embodiment 1 of the unmanned driving braking system provided by this utility model.

[0023] In the diagram, 1-hydraulic oil tank, 2-gear pump, 3-filter, 4-relief valve, 5-parking brake, 6-return oil filter, 7-filling valve, 8-accumulator, 9-electro-proportional control valve, 10-brake valve assembly, 11-axle, 12-breather, 13-hydraulic oil tank drain port, 14-oil tank indicator, 15-brake pressure switch, 16-accumulator low pressure alarm switch, 17-pilot control valve. Detailed Implementation

[0024] The following detailed description of preferred embodiments of the present invention, along with the included examples, will make the content of the present invention more readily understood. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In case of any conflict, the definitions in this specification shall prevail.

[0025] Example 1:

[0026] Provided such as Figures 1-2 The unmanned braking system shown includes an oil supply device, a filling valve 7, a parking brake 5, an accumulator 8, a dual-path brake and an electro-proportional valve group. The oil supply device and the filling valve 7 are connected by pipelines, and the filling valve 7 is connected by pipelines to the parking brake 5, the accumulator 8, the dual-path brake and the electro-proportional valve group.

[0027] The oil supply device includes a hydraulic oil tank 1, a gear pump 2, and a filter 3. The hydraulic oil tank 1 and gear pump 2 are connected by a pipeline, the gear pump 2 and filter 3 are connected by a pipeline, and the filter 3 and filling valve 7 are connected by a pipeline. A breather 12 is installed on the hydraulic oil tank 1. A hydraulic oil tank drain port 13 is provided at one end of the hydraulic oil tank 1. An oil tank indicator 14 is provided at one end of the hydraulic oil tank 1. The oil supply device also includes an overflow valve 4 and a return oil filter 6. The overflow valve 4 and filter 3 are connected by a pipeline, the overflow valve 4 and return oil filter 6 are connected by a pipeline, and the return oil filter 6 and hydraulic oil tank 1 are connected by a pipeline. The gear pump 2 draws oil from the hydraulic oil tank 1, connects to the filling valve 7 via the filter 3, and supplies hydraulic oil to the filling valve 7. Excess hydraulic oil is filtered by the overflow valve 4 and the return oil filter 6 and returned to the hydraulic oil tank 1.

[0028] The dual-path brake and electro-proportional valve assembly includes an electro-proportional brake valve 9, a brake valve assembly 10, and an axle 11. The electro-proportional brake valve 9 is connected to a filling valve 7 via a pipeline; the brake valve assembly 10 is connected to the filling valve 7 via a pipeline; the electro-proportional brake valve 9 and the brake valve assembly 10 are connected via a pipeline; and the brake valve assembly 10 and the axle 11 are connected via a pipeline. A pilot control valve 17 is installed inside the electro-proportional brake valve 9. A brake pressure switch 15 is installed on the brake valve assembly 10. The filling valve 7 supplies oil to both the brake valve and the electro-proportional valve. Under manual operation, braking can be performed normally. When the vehicle is unmanned, the current output of the electro-proportional valve is remotely controlled via a remote control device, thereby controlling the pressure of the pilot control valve 17. Figure 2 As shown, the pressure at brake port Z is made equal to the pressure at brake port T by pilot control valve 17, that is, the conversion between pressure and pedaling force is achieved by simulating pedaling force.

[0029] The accumulator low-pressure alarm switch 16 is installed on the filling valve 7.

[0030] Working principle: Gear pump 2 draws oil from hydraulic oil tank 1, which is then connected to filling valve 7 via filter 3, supplying hydraulic oil to filling valve 7. Excess hydraulic oil is filtered through overflow valve 4 and return oil filter 6 before returning to hydraulic oil tank 1. The hydraulic oil in filling valve 7 is divided into three paths: one path connects to the parking brake 5 of the front or rear wheels; one path connects to accumulator 8 to provide emergency braking energy release for parking; and the other path connects to the dual-path brake and the electro-proportional valve assembly. Filling valve 7 simultaneously supplies oil to the brake valve and the electro-proportional valve. Under manual operation, braking can be performed normally. When unmanned, the current output of the electro-proportional valve is remotely controlled via a remote control device, thereby controlling the pressure of pilot control valve 17.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An unmanned driving braking system, characterized in that, It includes an oil supply device, a filling valve, a parking brake, an accumulator, a dual-path brake, and an electro-proportional valve assembly. The oil supply device is connected to the filling valve via a pipeline, and the filling valve is connected to the parking brake, the accumulator, the dual-path brake, and the electro-proportional valve assembly via a pipeline.

2. The unmanned driving braking system according to claim 1, characterized in that, The oil supply device includes a hydraulic oil tank, a gear pump, and a filter. The hydraulic oil tank and the gear pump are connected through a pipeline, the gear pump and the filter are connected through a pipeline, and the filter and the filling valve are connected through a pipeline.

3. The unmanned driving braking system according to claim 2, characterized in that, The oil supply device also includes an overflow valve and a return oil filter. The overflow valve is connected to the filter through a pipeline, the overflow valve is connected to the return oil filter through a pipeline, and the return oil filter is connected to the hydraulic oil tank through a pipeline.

4. The unmanned driving braking system according to claim 2, characterized in that, The hydraulic oil tank is equipped with a breather.

5. The unmanned driving braking system according to claim 2, characterized in that, One end of the hydraulic oil tank is provided with a hydraulic oil tank drain port.

6. The unmanned driving braking system according to claim 2, characterized in that, A tank indicator is provided at one end of the hydraulic oil tank.

7. The unmanned driving braking system according to claim 1, characterized in that, The dual-path brake and electric proportional valve group includes an electric proportional brake valve, a brake valve group and an axle. The electric proportional brake valve is connected to the filling valve through a pipeline. The brake valve group is connected to the filling valve through a pipeline. The electric proportional brake valve and the brake valve group are connected through a pipeline. The brake valve group and the axle are connected through a pipeline.

8. The unmanned driving braking system according to claim 7, characterized in that, The electro-proportional braking valve is equipped with a pilot control valve.

9. An unmanned driving braking system according to claim 7, characterized in that, The brake valve assembly is equipped with a brake pressure switch.

10. An unmanned driving braking system according to claim 1, characterized in that, The filling valve is equipped with a low-pressure alarm switch for the accumulator.

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