CN215244804U - Hydraulic energy storage redundant safety brake system of unmanned vehicle - Google Patents
Hydraulic energy storage redundant safety brake system of unmanned vehicle Download PDFInfo
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- CN215244804U CN215244804U CN202120900392.2U CN202120900392U CN215244804U CN 215244804 U CN215244804 U CN 215244804U CN 202120900392 U CN202120900392 U CN 202120900392U CN 215244804 U CN215244804 U CN 215244804U
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Abstract
The utility model provides a redundant safe braking system of unmanned vehicle hydraulic pressure energy storage belongs to unmanned vehicle hydraulic pressure energy storage brake technical field, include: the brake actuating mechanism is used for executing braking action, the electric control brake mechanism and the energy accumulator redundant brake mechanism are respectively connected with the brake actuating mechanism through the main oil way, the reversing valve is loaded on the main oil way, and the reversing valve enables the brake actuating mechanism and the electric control brake mechanism or the energy accumulator redundant brake mechanism to be in an internal communication state by switching oil flow channels in the main oil way. The utility model provides a braking system of unmanned vehicle main brake mechanism under unmanned mode always be in operating condition and the problem that failure may appear.
Description
The technical field is as follows:
the utility model belongs to the technical field of unmanned vehicle hydraulic pressure energy storage brake, concretely relates to redundant safe braking system of unmanned vehicle hydraulic pressure energy storage.
Background art:
the power source of a brake mechanism of a manually driven vehicle is pedaling pressure, a vacuum boosting system or other boosting systems are adopted, and the pedaling of a brake is very easy under the assistance of the boosting systems. Even when the auxiliary brake fails, effective brake can still be guaranteed by treading multi-point force.
In the development of the current vehicle braking technology, the common vehicle rarely adopts non-artificial external forces such as pure electric force, vacuum assistance and the like as a mechanism of active braking power but as auxiliary power. The main reason is that the safety factor of these brake actuators is not high enough.
The brake system of the unmanned vehicle adopts non-artificial external force such as pure electric force or vacuum assistance and the like as a braking force electric control brake actuating mechanism, but the main brake mechanism in the unmanned mode is always in a working state and can cause failure problems, and the vehicle can not be effectively braked to cause safety accidents.
The utility model has the following contents:
the embodiment of the utility model provides a redundant safe braking system of unmanned vehicle hydraulic pressure energy storage has solved the main brake mechanism of unmanned vehicle under unmanned mode and is in operating condition always and probably the problem that failure appears.
The embodiment of the utility model provides a redundant safe braking system of unmanned vehicle hydraulic pressure energy storage, include:
the brake actuating mechanism is used for executing a braking action;
an electrically controlled brake mechanism;
an accumulator redundant braking mechanism;
the main oil way is used for connecting the electric control brake mechanism and the energy accumulator redundant brake mechanism with the brake actuating mechanism respectively;
and the reversing valve is loaded on the main oil way, and the reversing valve enables the brake actuating mechanism and the electric control brake mechanism or the energy accumulator redundant brake mechanism to be in an internal communication state by switching an oil flow channel in the main oil way.
In some embodiments, the unmanned vehicle hydraulic energy-storage redundant safety braking system further comprises a one-way oil path system connecting the electric control braking mechanism and the energy-storage redundant braking mechanism, and oil can only flow into the energy-storage redundant braking mechanism from the electric control braking mechanism in the one-way oil path system.
In some embodiments, the one-way oil system comprises:
the one-way oil way is used for connecting the electric control brake mechanism with the energy accumulator redundant brake mechanism so as to enable the internal oil flow channels of the electric control brake mechanism and the energy accumulator redundant brake mechanism to be communicated;
and a check relief valve mounted on the check oil passage.
In some embodiments, the electronically controlled braking mechanism comprises:
an electrically controlled brake pump;
and the main brake oil path is used for connecting the electric control brake pump and the reversing valve, so that the oil flow channels in the electric control brake pump and the reversing valve are communicated.
In some embodiments, the accumulator redundant braking mechanism comprises:
an energy storage device;
and the redundant brake oil path is used for connecting the energy accumulator and the reversing valve, so that the internal oil flow channels of the energy accumulator and the reversing valve are communicated.
The embodiment of the utility model provides an in redundant safe braking system of unmanned vehicle hydraulic pressure energy storage under automatically controlled brake failure state, the switching-over valve switches to the redundant brake mechanism of energy storage, the redundant brake mechanism oil pressure release of energy storage, promote the brake actuating mechanism and carry out the brake action, improve brake braking validity under the unmanned mode, the main brake mechanism of the braking system under the unmanned mode of having solved unmanned vehicle is in operating condition can appear malfunctioning problem always, this redundant safe braking system of unmanned vehicle hydraulic pressure energy storage both can be used for unmanned and can be used for the vehicle under other driving conditions, the redundant safe braking system of whole unmanned vehicle hydraulic pressure energy storage simple structure, structural stability is high.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Description of the drawings:
the accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a diagram of the working state of the embodiment of the present invention in the working mode of the electrically controlled brake mechanism;
fig. 2 is a working state diagram of the embodiment of the present invention in the working mode of the redundant brake mechanism of the energy storage device;
reference numerals: 10. a brake actuator; 20. an electrically controlled brake mechanism; 201. an electrically controlled brake pump; 202. a main brake oil path; 30. an accumulator redundant braking mechanism; 301. an energy storage device; 302. redundant brake oil paths; 40. a main oil path; 50. a diverter valve; 60. a one-way oil circuit system; 601. a one-way oil path; 602. a one-way overflow valve.
The specific implementation mode is as follows:
in order to make the technical solution of the present invention's purpose, technical solution and advantages clearer, the following description will be combined with the drawings of the specific embodiments of the present invention, to carry out clear and complete description on the technical solution of the embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
As shown in fig. 1-2, the present embodiment provides a hydraulic energy storage redundant safety braking system for an unmanned vehicle, comprising: the brake system comprises a brake actuating mechanism 10, an electric control brake mechanism 20, an energy accumulator redundant brake mechanism 30, a main oil path 40 and a reversing valve 50.
The brake actuator 10 is used to perform a braking action, specifically for braking purposes by means of oil pressure.
The electrically controlled brake mechanism 20 starts to operate by an external brake signal and provides brake oil pressure power to the brake actuator 10.
The accumulator redundant braking mechanism 30 directly pushes the brake actuator 10 using the oil pressure of the accumulator 301, so that the brake actuator 10 performs a braking action.
The main oil path 40 connects the electronically controlled brake mechanism 20 and the accumulator redundant brake mechanism 30 to the brake actuator 10, respectively. The main oil path 40 realizes the intercommunication of the electric control brake mechanism 20 and the accumulator redundant brake mechanism 30 with the internal oil flow channel of the brake actuating mechanism 10 respectively.
The direction change valve 50 is loaded on the main oil passage 40, and the direction change valve 50 brings the brake actuator 10 into an internal communication state with the electrically controlled brake mechanism 20 or the accumulator redundant brake mechanism 30 by switching the oil flow passage in the main oil passage 40.
The reversing valve 50 plays a role in switching oil pipelines in the hydraulic energy storage redundant safety brake system of the unmanned vehicle, so that the brake actuating mechanism 10, the electric control brake mechanism 20 and the energy storage redundant brake mechanism 30 can be freely switched, and the switching can be realized after receiving an instruction of a vehicle controller.
The electrically controlled brake mechanism 20 includes: an electrically controlled brake pump 201 and a main brake oil path 202.
The electrically controlled brake pump 201 starts to operate by an external brake signal and provides brake oil pressure power.
The main brake oil path 202 connects the electric control brake pump 201 and the selector valve 50, so that the oil flow paths inside the electric control brake pump 201 and the selector valve 50 are communicated.
Wherein, the redundant brake mechanism 30 of accumulator includes: an accumulator 301 and a redundant brake oil path 302.
The accumulator 301 is used for storing excess oil, such as hydraulic oil, and accumulating excess hydraulic energy.
The redundant brake oil path 302 connects the accumulator 301 and the selector valve 50 such that the internal oil flow passages of both the accumulator 301 and the selector valve 50 communicate.
The hydraulic energy storage redundant safety brake system of the unmanned vehicle further comprises a one-way oil way system 60 which is connected with the electric control brake mechanism 20 and the energy storage redundant brake mechanism 30, and oil in the one-way oil way system 60 can only flow into the energy storage redundant brake mechanism 30 from the electric control brake mechanism 20.
The one-way oil passage system 60 includes: a check oil passage 601 and a check relief valve 602.
The one-way oil path 601 connects the electrically controlled brake mechanism 20 with the accumulator redundant brake mechanism 30, so that the internal oil flow channels of the electrically controlled brake mechanism 20 and the accumulator redundant brake mechanism 30 are communicated.
Specifically, two ends of the one-way oil path 601 are respectively connected to the main brake oil path 202 of the electronically controlled brake mechanism 20 and the redundant brake oil path 302 of the accumulator redundant brake mechanism 30.
The relief and check valve 602 is loaded on the check oil passage 601 so that oil can flow only from the electronically controlled brake mechanism 20 into the accumulator redundant brake mechanism 30 in the check oil passage 601.
The redundant safety braking process comprises the following steps:
(1) before the vehicle is started without being powered on or the system is suddenly powered off in the running process of the vehicle, the reversing valve 50 is in a reset state, and the high-pressure oil of the energy storage device 301 directly pushes a braking device such as a brake actuating mechanism 10 through the reversing valve 50, so that the vehicle is effectively braked, and the functions of power-off braking and parking braking are achieved;
(2) when the electric control brake system runs normally, oil is fed into the electric control brake pump 201, the pressure begins to rise, and when the brake pressure is not enough to overcome the elastic return pressure of the brake actuating mechanism 10, the brake is executed and does not work;
(3) when the pressure exceeds the return elasticity of the brake actuating mechanism 10, the brake actuating mechanism 10 starts to act, when the pressure reaches the pressure lower than the maximum brake pressure, the brake disc is completely braked or opened, the brake actuating mechanism 10 finishes the maximum stroke, and the hydraulic system reaches a pressure balance point;
(4) when the pipeline pressure is established in the brake oil way system, hydraulic oil can enter the energy accumulator 301 as long as the pressure of the brake oil way system is greater than the pressure of the energy accumulator 301 until the pressure in the energy accumulator 301 and the pressure in the pipeline are balanced, and the maximum pressure of the brake system is maintained;
(5) when the electric control brake pump 201 unloads oil, the hydraulic oil in the energy accumulator 301 can not return oil and release pressure due to the one-way overflow valve 602, and the maximum pressure is still kept;
(6) when the repeated action times of the braking action are enough, the energy accumulator 301 can store a certain amount of hydraulic oil to enable the pressure of the hydraulic oil to be equal to the maximum value of the system pressure, at the moment, the braking is performed again, and the energy accumulator 301 does not feed oil or return oil any more because the pressure of the pipeline cannot be higher than the pressure of the energy accumulator 301;
(7) when the main brake system fails, the reversing valve 50 is reset, the oil way of the energy accumulator 301 is switched to be directly communicated with the brake device, the energy accumulator 301 starts to discharge oil and enters the brake actuating mechanism 10, and the brake action starts;
(8) because the maximum brake oil capacity of the brake actuating mechanism 10 is limited, when the energy accumulator 301 stops unloading oil, the oil pressure of the energy accumulator 301 keeps balanced in the brake actuating mechanism 10;
and (II) the redundant safe brake recovery process comprises the following steps:
(1) the reversing valve 50 switches the oil path to the electric control brake pump 201 to be directly communicated with the brake device, and as the electric control brake pump 201 is in a brake release non-working state, the pressure of the brake system is 0, the hydraulic oil in the brake actuating mechanism 10 returns to the oil pot through the electric control brake pump 201;
(2) when the vehicle stops or fails and can not be relieved, the brake is always effective. At this moment, if trailer maintenance is needed, then, the pressure of the overflow valve can be manually modulated to be 0, the electric control brake pump 201 is opened for oil feeding, the valve plug of the overflow valve is opened by oil pressure at the moment, then, the electric control brake pump 201 returns to the original position, the valve plug does not return because the pressure of the overflow valve is regulated to be 0, hydraulic oil in the brake actuating mechanism 10 returns to the oil pot through the overflow valve and the electric control brake pump 201, the brake actuating mechanism 10 returns to the original position, and the vehicle can run again.
The embodiment of the utility model provides an in redundant safe braking system of unmanned vehicle hydraulic pressure energy storage under automatically controlled brake failure state, switching-over valve 50 switches to the redundant brake mechanism 30 of energy storage, the redundant brake mechanism 30 oil pressure release of energy storage, promote the brake actuating mechanism 10 and carry out the brake action, improve brake braking validity under the unmanned mode, the main brake mechanism of the braking system under the unmanned mode of having solved unmanned vehicle is in operating condition can appear malfunctioning problem always, this redundant safe braking system of unmanned vehicle hydraulic pressure energy storage both can be used for unmanned and can be used for the vehicle under other driving conditions, the redundant safe braking system of whole unmanned vehicle hydraulic pressure energy storage simple structure, structural stability is high.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme consisting of the equivalent replacement of the technical features. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (5)
1. The utility model provides a redundant safe braking system of unmanned vehicle hydraulic pressure energy storage which characterized in that includes:
a brake actuator (10) for performing a braking action;
an electrically controlled brake mechanism (20);
an accumulator redundant braking mechanism (30);
a main oil path (40) which connects the electric control brake mechanism (20) and the accumulator redundant brake mechanism (30) with the brake actuating mechanism (10) respectively;
a direction change valve (50) loaded on the main oil passage (40), the direction change valve (50) making the brake actuator (10) and the electrically controlled brake mechanism (20) or the accumulator redundant brake mechanism (30) in an internal communication state by switching an oil flow passage in the main oil passage (40).
2. The unmanned vehicle hydraulic energy storage redundant safety brake system of claim 1, further comprising a one-way oil circuit system (60) connecting the electrically controlled brake mechanism (20) and the accumulator redundant brake mechanism (30), wherein oil can only flow from the electrically controlled brake mechanism (20) to the accumulator redundant brake mechanism (30) in the one-way oil circuit system (60).
3. The unmanned vehicle hydraulic energy storage redundant safety brake system of claim 2, wherein the one-way oil system (60) comprises:
a one-way oil path (601) connecting the electric control brake mechanism (20) with the accumulator redundant brake mechanism (30) so that the internal oil flow channels of the electric control brake mechanism (20) and the accumulator redundant brake mechanism (30) are communicated;
and a relief/check valve (602) mounted on the oil check passage (601).
4. The unmanned vehicle hydraulic energy storage redundant safety brake system of claim 1, wherein the electronically controlled brake mechanism (20) comprises:
an electrically controlled brake pump (201);
a main brake oil path (202) connecting the electronically controlled brake pump (201) and the selector valve (50) such that the internal oil flow paths of the electronically controlled brake pump (201) and the selector valve (50) are in communication.
5. The unmanned vehicle hydraulic energy storage redundant safety brake system of claim 1, wherein: the accumulator redundant braking mechanism (30) comprises:
an energy storage (301);
a redundant brake oil path (302) connecting the accumulator (301) and the direction change valve (50) such that both the accumulator (301) and the direction change valve (50) communicate with each other in their internal oil flow passages.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120900392.2U CN215244804U (en) | 2021-04-28 | 2021-04-28 | Hydraulic energy storage redundant safety brake system of unmanned vehicle |
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| CN202120900392.2U CN215244804U (en) | 2021-04-28 | 2021-04-28 | Hydraulic energy storage redundant safety brake system of unmanned vehicle |
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| CN215244804U true CN215244804U (en) | 2021-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114872674A (en) * | 2022-04-21 | 2022-08-09 | 深圳元戎启行科技有限公司 | Vehicle brake control method, system, vehicle and storage medium |
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2021
- 2021-04-28 CN CN202120900392.2U patent/CN215244804U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114872674A (en) * | 2022-04-21 | 2022-08-09 | 深圳元戎启行科技有限公司 | Vehicle brake control method, system, vehicle and storage medium |
| CN114872674B (en) * | 2022-04-21 | 2024-01-30 | 深圳元戎启行科技有限公司 | Vehicle brake control method, system, vehicle and storage medium |
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