Vehicle brake device and vehicle

Abstract

The utility model provides a kind of vehicle braking device and vehicle, wherein vehicle braking device includes: pilot proportional component, pilot electric proportional valve group, brake valve group;Brake valve group is equipped with manual brake interface, manual brake interface connects brake pedal, for receiving the brake pressure generated by artificial treading;Brake valve group is also equipped with pilot control interface, pilot control interface connects the output end of pilot proportional component;The input end of pilot proportional component is connected in the output end of pilot electric proportional valve group, for converting the oil pressure of pilot electric proportional valve group into the thrust of pushing brake pedal;When personnel is in position driving, brake valve group's proportional valve core moves according to the treading intensity of brake pedal, and outputs different pressure;When automatic driving, pilot electric proportional valve group works, according to the size of electric current, corresponding proportion oil pressure is output to pilot proportional component, and pilot proportional component outputs thrust proportionally, and moves the proportional valve core of brake valve group by pushing brake pedal, and outputs different pressure.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, specifically to a vehicle braking device and a vehicle. Background Technology

[0002] With the development of automation and intelligence in construction machinery, unmanned and remote-controlled driving technologies are becoming increasingly popular. As a key safety actuator, the vehicle's braking system needs to adapt to new control requirements. Traditional manually driven vehicles use hydraulic brake valves, directly controlling braking pressure via a foot pedal. However, for unmanned or remote-controlled vehicles, additional electronically controlled actuators (such as relay valves and solenoid valves) are typically required to simulate pedal operation. This not only increases system complexity and cost, resulting in numerous piping layouts and significant space occupation, but also often only enables on / off braking, making it difficult to achieve smooth and precise proportional braking, thus affecting operational safety and passenger comfort.

[0003] Therefore, there is an urgent need for a braking device that is highly integrated, compatible with multiple driving modes, and capable of precise proportional control. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle braking device that is compatible with multiple driving modes and can achieve precise proportional control braking.

[0005] To achieve the above objectives, this utility model provides a vehicle braking device, comprising:

[0006] Pilot proportional component, pilot proportional valve assembly, brake valve assembly including proportional valve core;

[0007] The brake valve assembly is equipped with a manual braking interface, which is connected to the brake pedal and used to receive braking pressure generated by manual pedaling.

[0008] The brake valve assembly is also provided with a pilot control interface, which is connected to the output end of the pilot proportional component.

[0009] The input end of the pilot proportional component is connected to the output end of the pilot proportional valve group, and is used to convert the oil pressure of the pilot proportional valve group into the thrust that pushes the brake pedal.

[0010] The input end of the pilot proportional valve assembly is connected to a hydraulic power source, and the hydraulic power source simultaneously provides pressure to the proportional valve core of the brake valve assembly.

[0011] When a person is driving, the proportional valve core of the brake valve assembly moves according to the pressure applied to the brake pedal, outputting different pressures to achieve the braking effect.

[0012] When the system is in autonomous driving mode, the pilot proportional valve assembly operates, outputting a corresponding proportion of oil pressure to the pilot proportional component according to the magnitude of the current. The pilot proportional component outputs thrust proportionally, pushing the brake pedal to move the proportional valve core of the brake valve assembly, outputting different pressures to achieve the braking effect.

[0013] In an optional embodiment, the pilot-operated proportional valve assembly includes a pressure reducing valve, a directional valve, and an electro-proportional valve;

[0014] The inlet of the pressure reducing valve is connected to the hydraulic power source, and the outlet is connected to the P port of the directional valve. The working port of the directional valve serves as the outlet of the pilot electric proportional valve assembly. The drain port of the pressure reducing valve is connected to the inlet of the electro-proportional valve, and the drain port of the electro-proportional valve and the T port of the directional valve are connected to the oil tank.

[0015] In an optional configuration, the brake valve assembly has two valve cores, namely a first valve core and a second valve core. The first valve core is used to brake the front axle of the vehicle, and the second valve core is used to brake the rear axle of the vehicle.

[0016] In an optional embodiment, the vehicle braking device further includes a brake light switch, which is linked to the brake valve assembly and is used to trigger the brake lights during braking.

[0017] In an optional embodiment, the hydraulic circuit of the vehicle braking device is equipped with a filter, which is located at the hydraulic source outlet and is used to filter the oil.

[0018] This utility model also provides a vehicle that includes the above-described vehicle braking device.

[0019] The beneficial effects of this utility model are as follows:

[0020] This vehicle braking system utilizes a pilot-operated proportional valve assembly and pilot-operated proportional components as a power source, combined with the brake valve assembly, to achieve unmanned braking. Compared to the traditional method of using relay valve assemblies for control, it can save significant costs and piping layout, offers strong compatibility, is easy to install, saves materials, and can be used in multiple models and braking systems with different pressures. This device can not only be used for unmanned driving but also for remote control and manual operation. Attached Figure Description

[0021] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which the same reference numerals generally represent the same components.

[0022] Figure 1 This is a schematic diagram of the vehicle braking device in one embodiment of the present invention.

[0023] Figure 2This is a schematic diagram of a vehicle braking device in one embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Brake pedal; 2-Brake valve assembly; 3-Pilot proportional component; 4-Angle sensor; 5-Pump station hydraulic power source; 6-Filter; 7-Brake taillight switch; 8-Front axle pressure detection port; 9-Rear axle pressure detection port; 10-Front axle; 11-Rear axle; 12-Relief valve; 13-Pilot proportional valve assembly. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and drawings. However, it should be noted that the concept of the present invention can be implemented in many different forms and is not limited to the specific embodiments described herein. The accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0027] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this utility model, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion.

[0028] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below” or “under” the other element or feature will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0030] Example

[0031] Reference Figure 1 and Figure 2 This embodiment provides a vehicle braking device, including:

[0032] Pilot proportional component 3, pilot proportional valve assembly 13, brake valve assembly including proportional valve core 2;

[0033] The brake valve assembly is provided with a manual braking interface, which is connected to the brake pedal 1 and is used to receive the braking pressure generated by manual pedaling.

[0034] The brake valve assembly is also provided with a pilot control interface Z, which is connected to the output end of the pilot proportional component 3.

[0035] The input end of the pilot proportional component 3 is connected to the output end of the pilot proportional valve group 13, and is used to convert the oil pressure of the pilot proportional valve group into the thrust that pushes the brake pedal.

[0036] The input end of the pilot proportional valve group 13 is connected to a hydraulic source, and the hydraulic source simultaneously provides pressure to the proportional valve core 2 of the brake valve group.

[0037] When a person is in the driving position, the proportional valve core 2 of the brake valve assembly moves according to the pressure applied to the brake pedal, outputting different pressures to achieve the braking effect.

[0038] When the system is in autonomous driving mode, the pilot proportional valve assembly 13 operates and outputs a corresponding proportion of oil pressure to the pilot proportional component 3 according to the magnitude of the current. The pilot proportional component outputs thrust proportionally to push the brake pedal to move the proportional valve core 2 of the brake valve assembly, outputting different pressures to achieve the braking effect.

[0039] Specifically, in this embodiment, the hydraulic power source 5 of the pump station provides pressure to the entire hydraulic system, and the relief valve 12 ensures the maximum pressure of the entire hydraulic system. The structure of the pilot proportional component 3 is similar to that of a hydraulic cylinder. According to the calculation, the ratio of pressure to thrust is obtained. The magnitude of the thrust determines the stroke distance of the pilot proportional component 3, and the stroke distance determines the force required to push the brake pedal 1.

[0040] The brake valve assembly has two proportional valve cores, namely a first valve core and a second valve core. The first valve core is used to brake the front axle 10 of the vehicle, and the second valve core is used to brake the rear axle 11 of the vehicle. When testing is required, a front axle pressure detection port 8 and a rear axle pressure detection port 9 are provided to test the braking force of the brake valve assembly.

[0041] In this embodiment, the pilot-operated proportional valve assembly includes a pressure reducing valve, a directional valve, and an electro-proportional valve. The inlet of the pressure reducing valve is connected to the hydraulic power source, and its outlet is connected to the P port of the directional valve. The working port of the directional valve serves as the outlet of the pilot-operated proportional valve assembly. The drain port of the pressure reducing valve is connected to the inlet of the electro-proportional valve, and the drain port of the electro-proportional valve and the T port of the directional valve are connected to the oil tank. After the pilot-operated proportional valve assembly 13 is working, the oil at the P port enters the pressure reducing valve. The return oil of the pressure reducing valve is controlled by the electro-proportional valve. When the directional valve is not working, all the oil at the working port returns. When working, the oil inlet at the P port of the directional valve enters the working port, and the pressure at the working port depends on the control of the electro-proportional valve. When autonomous driving requires braking, a remote control signal is sent to the host computer. The host computer's control program sends current (4mA-20mA) to the proportional valve. The greater the current, the greater the output pressure of the directional valve. The pilot proportional component 3 converts the pressure of the directional valve into thrust. The brake pedal 1 moves the proportional valve core 2, and the braking pressure at port R of the brake valve assembly is sent to ports T1 and T2, achieving a proportional braking effect. Simultaneously, the angle sensor 4 reduces the overall vehicle power output.

[0042] The vehicle braking device also includes a brake light switch 7, which is linked to the brake valve assembly and is used to activate the brake lights during braking. A filter 6 is provided in the hydraulic circuit of the vehicle braking device, located at the hydraulic power outlet, for filtering the hydraulic fluid.

[0043] Another embodiment of the present invention provides a vehicle that includes the vehicle braking device described above.

[0044] This vehicle braking system utilizes a pilot-operated proportional valve assembly and pilot-operated proportional components as a power source, combined with the brake valve assembly, to achieve unmanned braking. Compared to the traditional method of using relay valve assemblies for control, it can save significant costs and piping layout, offers strong compatibility, is easy to install, saves materials, and can be used in multiple models and braking systems with different pressures. This device can not only be used for unmanned driving but also for remote control and manual operation.

[0045] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A vehicle brake device characterized by comprising: include: Pilot proportional component, pilot proportional valve assembly, brake valve assembly including proportional valve core; The brake valve assembly is equipped with a manual braking interface, which is connected to the brake pedal and used to receive braking pressure generated by manual pedaling. The brake valve assembly is also provided with a pilot control interface, which is connected to the output end of the pilot proportional component. The input end of the pilot proportional component is connected to the output end of the pilot proportional valve group, and is used to convert the oil pressure of the pilot proportional valve group into the thrust that pushes the brake pedal. The input end of the pilot proportional valve assembly is connected to a hydraulic power source, and the hydraulic power source simultaneously provides pressure to the proportional valve core of the brake valve assembly. When a person is driving, the proportional valve core of the brake valve assembly moves according to the pressure applied to the brake pedal, outputting different pressures to achieve the braking effect. When the system is in autonomous driving mode, the pilot proportional valve assembly operates, outputting a corresponding proportion of oil pressure to the pilot proportional component according to the magnitude of the current. The pilot proportional component outputs thrust proportionally, pushing the brake pedal to move the proportional valve core of the brake valve assembly, outputting different pressures to achieve the braking effect.

2. The vehicle braking device as described in claim 1, characterized in that, The pilot-operated proportional valve assembly includes a pressure reducing valve, a reversing valve, and an electro-proportional valve. The inlet of the pressure reducing valve is connected to the hydraulic power source, and the outlet is connected to the P port of the directional valve. The working port of the directional valve serves as the outlet of the pilot electric proportional valve assembly. The drain port of the pressure reducing valve is connected to the inlet of the electro-proportional valve, and the drain port of the electro-proportional valve and the T port of the directional valve are connected to the oil tank.

3. The vehicle braking device as described in claim 1, characterized in that, The brake valve assembly has two valve cores, namely a first valve core and a second valve core. The first valve core is used to brake the front axle of the vehicle, and the second valve core is used to brake the rear axle of the vehicle.

4. The vehicle brake device according to claim 1, characterized by The vehicle braking device also includes a brake light switch, which is linked to the brake valve assembly and is used to trigger the brake lights during braking.

5. The vehicle brake apparatus according to claim 1, characterized by The hydraulic circuit of the vehicle braking device is equipped with a filter, which is located at the hydraulic source outlet and is used to filter the oil.

6. A vehicle characterized by comprising: It includes the vehicle braking device according to any one of claims 1-5.

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