CN212386470U - Intelligent digital electric control air brake valve for automobile - Google Patents
Intelligent digital electric control air brake valve for automobile Download PDFInfo
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- CN212386470U CN212386470U CN202021145670.XU CN202021145670U CN212386470U CN 212386470 U CN212386470 U CN 212386470U CN 202021145670 U CN202021145670 U CN 202021145670U CN 212386470 U CN212386470 U CN 212386470U
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Abstract
The utility model relates to an intelligent digital electric control air brake valve for automobiles, which comprises a valve body shell and one or more groups of adjustable air circuits which are arranged inside the valve body shell and can work independently; each group of adjustable gas circuits comprises: the air inlet, the air outlet, the air inlet electromagnetic valve and the air outlet electromagnetic valve are arranged on the air inlet pipe; the air outlet is connected with an automobile brake control air path, and the input of a control air source is continuously kept in the air inlet; each group of adjustable air passages can control one group of brakes so as to control one group of wheels; the air inlet electromagnetic valve and the air outlet electromagnetic valve are both normally closed electromagnetic valves; the normally closed electromagnetic valve comprises a valve core used for controlling air intake and air exhaust and an electromagnetic coil which is arranged on the outer side of the valve core and connected with the valve core and used for controlling the normally closed electromagnetic valve to work up and down, and one end of the valve core is connected with the air passing pipeline. The utility model discloses automatically controlled air brake valve of car intelligent digit realizes starting, keeping or removing the accurate control of braking to the car through the solenoid valve that sets up.
Description
Technical Field
The utility model relates to an automobile brake technical field, in particular to automatically controlled air brake valve of car intelligent digit.
Background
The automobile brake is a braking device of an automobile, and the brakes used by the automobile are almost all of friction type and can be divided into drum type and disc type. The rotary element in the drum brake friction pair is a brake drum, and the working surface of the rotary element is a cylindrical surface; the rotating element of the disc brake is then a rotating brake disc, with the end face being the working surface. A motor vehicle brake is a component which generates a force (braking force) which counteracts the movement or the tendency of movement of the vehicle, including also a retarder in an auxiliary brake system.
The power emergency braking system controlled by the air pressure of high-pressure air is widely applied to commercial automobiles such as trucks, buses and the like, an air compressor and a high-pressure air storage cylinder are generally adopted for supplying air, a driver operates an air brake foot valve to control the air pressure in a braking pipeline, the high-pressure air is sent to a relay valve of a chassis, and then a valve for braking the air pressure of wheels is opened, so that a corresponding braking force is generated by an air pressure brake cylinder. When the automobile is braked, the air pressure delivered to each brake cavity through the air brake foot valve, the braking force distribution of the front wheel and the rear wheel and the braking sequence of the front wheel and the rear wheel are all related to whether the automobile can be safely and timely braked.
At present, most of main flow air brake foot valves adopted by automobiles are of the type without sensors or with built-in sensors, the adopted hardware control principle is generally a pure pneumatic or pneumatic plus position sensing mode, and the air brake foot valve provided with the position sensor type is complicated in manufacture and high in cost due to the fact that the sensors are built in. The traditional air brake foot valve can not complete the brake function under the condition of leaving manual control, the air path of the traditional air brake foot valve relates to two parts of a vehicle body and a chassis, the air path is long and complex, the valve body can only be installed at a limited part of the vehicle body due to large volume, the valve body is often far away from a brake actuating mechanism, the brake response is slow (long lag time exists), and the brake force and the time can not be flexibly adjusted as required. According to the above, the existing main flow air brake foot valve has the defects that manual control is difficult to separate, active braking under electric control is realized, the size is large, the air circuit is complex, the braking time lag is large, the braking force control is not accurate, and the universality and the applicability are poor.
The analysis was performed using a semi-trailer as an example. The semitrailer train in the prior art consists of a traction automobile and a semitrailer, and the total length of the semitrailer body can reach 20m at the longest, so that dangerous working conditions such as folding, tail flicking, side turning, rapid transient axle load transfer and the like are easy to occur in the braking process, and serious traffic accidents are caused. The dangerous working conditions are caused by a plurality of reasons, the braking action lag of the semi-trailer train is one of the important reasons, and the national standard GB 7258 plus 2012 'technical conditions for motor vehicle operation safety' also makes clear regulations on the technology: the design and manufacture of the train braking system ensure that the time of the braking action of the final axle of the trailer lags behind the braking action of the front axle of the tractor is less than or equal to 0.2 s. At present, the domestic semitrailer braking systems mostly adopt double-pipeline air pressure braking, one is an air supply pipeline, and compressed air is transmitted to an air storage cylinder of a semitrailer; the other is a control pipeline which transmits compressed air to the semitrailer emergency relay valve. The structural arrangement of a brake system of a semitrailer which is common in China is shown as an attached drawing 1. The braking process of the semitrailer mainly comprises the following stages: a. when a brake pedal of a semi-trailer train is touched, under the control of a trailer brake control valve of a tractor, compressed air reaches the semi-trailer emergency relay valve through a control pipeline and opens a valve of the semi-trailer emergency relay valve; b. compressed air in the air storage cylinder of the semitrailer reaches a brake air chamber of the semitrailer through a valve of an emergency relay valve of the semitrailer, an ABS control assembly and the like and pushes a brake rod to start working; c. the air pressure of a brake chamber of the semitrailer is continuously increased, so that the stroke of the brake rod is increased, the gap between the brake drum and the brake shoe is reduced, the friction force is increased, and the speed of the semitrailer is reduced, thereby realizing braking; d. when a brake pedal of a semi-trailer train is loosened, the air pressure of a control pipeline is rapidly reduced, a valve of a semi-trailer emergency relay valve is closed, a channel for compressed air in a semi-trailer air storage cylinder to enter a semi-trailer brake air chamber is closed, meanwhile, an exhaust valve (or a quick release valve) of the semi-trailer emergency relay valve is opened, the compressed air in the semi-trailer brake air chamber is exhausted into the atmosphere through the exhaust valve (or the quick release valve), a brake rod returns under the action of spring force, so that the gap between a brake drum and a brake shoe is increased, the friction force is reduced, and the.
By combining the braking process and the structural arrangement of the semitrailer, a plurality of influence factors of the braking action lag of the semitrailer train can be preliminarily analyzed, such as the initial pipeline air pressure of the semitrailer train, the braking control system of a tractor, the travel and time of a brake pedal, the diameter of the semitrailer braking pipeline, the length of the semitrailer braking pipeline, the performance of an emergency relay valve of the semitrailer, the performance of an ABS control assembly, the type of a pipeline joint, the volume of a brake air chamber of the semitrailer, the spring tension of a brake air chamber brake lever of the semitrailer, and. Actual tests show that the initial pipeline air pressure of the semi-trailer train, the brake control system of the tractor, the length of the semi-trailer brake pipeline and the performance of the semi-trailer emergency relay valve all have certain influence on the brake action lag of the semi-trailer train, wherein the brake control system of the tractor has larger influence on the brake action lag of the semi-trailer train, the influence on the length of the semi-trailer brake pipeline and the performance of the semi-trailer emergency relay valve is smaller, and the influence on the initial pipeline air pressure of the semi-trailer train is smaller. Therefore, the performance of the train brake action lag of the semitrailer is improved, and measures such as a high-performance control system for enhancing the matching of the tractor and the semitrailer, optimization of the brake pipeline arrangement of the semitrailer, a semitrailer emergency relay valve with better selectivity and the like need to be taken. However, there is no integrated control valve that can satisfy all of the above three technical requirements.
In the prior art, a chinese utility model patent with application number 200720063328.3 discloses an electrically controlled pneumatic brake device, which consists of a pneumatic brake master cylinder and an electromagnetic valve; the normally open channel of the electromagnetic valve is connected between the exhaust channel of the master cylinder and the atmosphere, and the normally closed channel of the electromagnetic valve is connected between the exhaust channel of the master cylinder and the compressed air source. The electric control air brake device makes full use of the original resources of a compressed air source, a brake master cylinder and the like of a vehicle, can realize electric control of the existing air brake device on the basis of adding the electromagnetic valve and a small amount of air pressure pipelines, can solve the problem of matching and connecting the compressed air brake vehicle and an automatic control system to a certain extent, and can play an active role in improving driving safety and reducing road safety accidents.
The aforesaid patent is through the normally open passageway input control gas of its solenoid valve, normally closed passageway output control gas through the solenoid valve, through control the inputoutput to the braking gas, and then control the braking control gas signal of braking master cylinder output, it can solve automatic control system's joining in marriage the problem of connecing to a certain extent, but prior art still has certain limitation, because only through the normally open of a solenoid valve, the control of control gas is realized to the normally closed passageway, consequently it can only realize the braking to the car through the inputoutput to the braking gas, can't solve and control the time lag to the car braking, balanced scheduling problem, can't carry out accurate control to the emergency braking dynamics of car, accuracy when influence car braking, and reliability.
Therefore, research on an intelligent digital electric control air brake valve device for an automobile integrates a high-performance control system, an optimized brake pipeline arrangement, a high-performance emergency relay valve and the like, so that the operation and execution system is integrated into a whole, the problems of control time lag, balance and the like of automobile braking can be solved, the braking force of the automobile can be accurately controlled, and the accuracy and the reliability of the automobile in emergency braking are influenced, so that the intelligent digital electric control air brake valve device for the automobile is important.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide an automatically controlled air brake valve of car intelligent digit to solve not enough among the above-mentioned background art.
In order to achieve the above object, the utility model adopts the following technical scheme:
an intelligent digital electric control air brake valve for an automobile comprises a valve body shell and one or more groups of adjustable air paths which are arranged in the valve body shell and can work independently;
each group of adjustable gas circuits comprises: the air inlet, the air outlet, the air inlet electromagnetic valve and the air outlet electromagnetic valve are arranged on the air inlet pipe; the air outlet is connected with an automobile brake control air path, and the input of a control air source is continuously kept in the air inlet; each group of adjustable air passages can control one group of brakes so as to control one group of wheels;
the air inlet electromagnetic valve and the air outlet electromagnetic valve are both normally closed electromagnetic valves; the normally closed electromagnetic valve comprises a valve core used for controlling air intake and air exhaust and an electromagnetic coil which is arranged on the outer side of the valve core and connected with the valve core and used for controlling the normally closed electromagnetic valve to work up and down, and one end of the valve core is connected with an air passing pipeline.
As a further improvement of the utility model, each electromagnetic valve is provided with a valve core, and the valve core comprises a fixed core, a movable core and a guide rod which are arranged in the electromagnetic coil; the fixed core and the movable core are both arranged in the guide rod, and the guide rod is a hollow cylinder with one open end; the fixed core is arranged on one side of the inner part of the guide rod, and the movable core is arranged on one side of the outer part of the guide rod; the outward end of the movable core is connected with a vulcanizing body, the vulcanizing body is connected with a spring, and a sealing ring is arranged on the vulcanizing body; the electromagnetic coil comprises a waterproof coil, a coil shell and coil pins extending outwards, the waterproof coil surrounds the outer side of the guide rod, the coil shell covers the outer side of the waterproof coil, and a pressing sleeve used for fixing the waterproof coil in the coil shell is further arranged in the coil shell; the coil shell is a hollow cylinder with two open ends, the end face of one end of the coil shell is provided with a through hole for the guide rod to pass through, the other end of the coil shell is provided with a through hole for the guide rod and the pressing sleeve to pass through, and one side of the coil shell is provided with a through hole for the waterproof coil and the coil pin to pass through; and a buffer pressure pad is also arranged at one end of the coil shell, which is provided with a through hole for passing through the guide rod, and the coil pin is connected with the waterproof coil.
As a further improvement, the valve body casing in be equipped with pressure sensor and be used for this sensor data access's binding post, pressure sensor includes pressure sensor and exhaust pressure sensor admits air, still be provided with main control board, sensor board and the line control board of electricity connection each other in the valve body casing, pressure sensor and exhaust pressure sensor all set up in on the sensor board and with the sensor board electricity is connected, binding post set up in bottom one side of valve body casing, its up end with the main control board is connected, and its with the main control board electricity connection each other, the line control board is connected with the coil pin electricity connection each other of outside extension.
As a further improvement of the present invention, the valve body shell is further provided with one or more groups of air holes for connecting or discharging control air, and a group of air holes comprises an air inlet, an air outlet and an air outlet; the air inlet, the air outlet and the air outlet are all arranged on the outer surface of the valve body shell and are respectively connected with the air passing pipeline; the air inlet is connected with the air inlet through an air passing pipeline; the exhaust port is connected with the exhaust port through an air passing pipeline; the air outlet is independently controlled and output; the protective cover is arranged at the upper end of the valve body shell and covers the outer side of the electromagnetic coil.
Compared with the prior art have the advantages that:
1. the utility model discloses automatically controlled air brake valve of car intelligent digit, through each group's gas circuit of each solenoid valve accurate control respectively to the stopper input that corresponds and exhaust pressure gas and working gas pressure, by its size, speed, the accurate control of duration to each stopper braking force, and then realize to the automobile staring, keep or remove the accurate control of braking.
2. The utility model discloses the automatically controlled air brake valve of car intelligent digit adopts marshalling control and braking locking, adopts the design of multiunit normally closed solenoid valve, can realize locking braking atmospheric pressure through two gas circuits and solenoid valve; each channel can control a group of brakes and a group of wheels; the pressure inlet, pressure maintaining, locking and braking states of the air passage can be controlled to maintain a specific pressure value, the pressure is continuously increased or reduced, and a relay valve of the automobile is directly controlled, so that the braking of the automobile is controlled.
3. The utility model discloses car intelligent digital automatically controlled air brake valve can directly install additional in the braking system of current former car, neither changes traditional braking system, can realize the automatically controlled automatic emergency braking function of accurate control again, reduces the manpower and materials that consume in the automobile braking system transformation process; meanwhile, the brake air circuit of the original automobile is not changed, so that the automobile brake system can be adapted to various automobile brake systems, and the compatibility is strong; meanwhile, the braking operation and the execution time can be greatly shortened, and the running safety of the vehicle is improved.
To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic structural diagram of a semitrailer braking system commonly used in China;
FIG. 2 is a schematic structural diagram of a side surface of the intelligent electrically controlled air brake valve of the present invention;
FIG. 3 is a schematic diagram of a front module of the intelligent electrically controlled air brake valve of the present invention;
FIG. 4 is a schematic structural diagram of a sensor in the intelligent electrically controlled air brake valve of the present invention;
FIG. 5 is a schematic structural view of a coil pin in the intelligent electrically controlled air brake valve of the present invention;
fig. 6 is the structure schematic diagram of the intelligent electric control air brake valve electromagnetic valve of the automobile.
In the drawings: 1. an air inlet; 2. an exhaust port; 3. an air outlet; 4. a normally closed solenoid valve; 41. an air inlet solenoid valve; 42. an exhaust solenoid valve; 5. a main control board; 6. a valve body housing; 7. a gas passing pipeline; 8. fixing the core; 9. a movable core; 10. a guide bar; 11. a vulcanized body; 12. a spring; 13. a seal ring; 14. a waterproof coil; 15. a coil housing; 16. a coil pin; 17. pressing the sleeve; 18. a cushion pad; 19. a wire passing control panel; 20. a wiring terminal; 21. an intake air pressure sensor; 22. an exhaust pressure sensor; 23. a sensor board; 24. a protective cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
According to the attached drawings, the embodiment provides an intelligent digital electric control air brake valve for an automobile, which comprises a valve body shell 6 and one or more groups of adjustable air passages which are arranged in the valve body shell 6 and can work independently;
each group of adjustable gas circuits comprises: an air inlet 1, an air outlet 2, an air outlet 3, an air inlet solenoid valve 41 and an air outlet solenoid valve 42; wherein, the air outlet 3 is connected with an automobile brake control air path, and the input of a control air source is continuously kept in the air inlet 1; each group of adjustable air passages can control one group of brakes so as to control one group of wheels;
the air inlet electromagnetic valve 42 and the air outlet electromagnetic valve 42 are both normally closed electromagnetic valves 4; the normally closed electromagnetic valve 4 comprises a valve core for controlling air intake and air exhaust and an electromagnetic coil which is arranged on the outer side of the valve core and connected with the valve core and used for controlling the normally closed electromagnetic valve to work up and down, and one end of the valve core is connected with an air passing pipeline.
In the intelligent digital electric control air brake valve for the automobile in the embodiment, each electromagnetic valve is provided with a valve core, and the valve core comprises a fixed core 8, a movable core 9 and a guide rod 10 which are arranged in the electromagnetic coil; the fixed core 8 and the movable core 9 are both arranged in the guide rod 10, and the guide rod 10 is a hollow cylinder with one open end; the fixed core 8 is arranged on one side of the inner part of the guide rod 10, and the movable core 9 is arranged on one side of the outer part of the guide rod 10; the outward end of the movable core 9 is connected with a vulcanizing body 11, the vulcanizing body 11 is connected with a spring 12, and a sealing ring 13 is arranged on the vulcanizing body 11; the electromagnetic coil comprises a waterproof coil 14, a coil shell 15 and coil pins 16 extending outwards, the waterproof coil 14 surrounds the outer side of the guide rod 10, the coil shell 15 covers the outer side of the waterproof coil 14, and a pressing sleeve 17 used for fixing the waterproof coil 14 in the coil shell 15 is further arranged in the coil shell 15; the pressing sleeve 17 is connected with the waterproof coil 14, the coil shell 15 is a hollow cylinder with two open ends, a through hole for the guide rod 10 to pass through is arranged on the end face of one end of the coil shell, a through hole for the guide rod 10 and the pressing sleeve 17 to pass through is arranged on the other end of the coil shell, and a through hole for the waterproof coil 14 and the coil pin 16 to pass through is arranged on one side face of the coil shell; the coil shell 15 is provided with a buffer pressure pad 18 at one end of the through hole for passing through the guide rod 10, and the coil pin 16 is connected with the waterproof coil 14.
The automatically controlled air brake valve of car intelligent digital in this embodiment, valve body housing 6 in be equipped with pressure sensor and be used for this sensor data access's binding post 20, pressure sensor includes pressure sensor and the exhaust pressure sensor that admits air, still be provided with main control board 5, sensor board 23 and the line control panel 19 of interconnect electricity in the valve body housing, pressure sensor 21 and exhaust pressure sensor 22 that admits air all set up in on the sensor board 23 and with the sensor board 23 electricity is connected, binding post 20 set up in bottom one side of valve body housing 6, its up end with main control board 5 is connected, and its with main control board 5 interconnect electricity, line control panel 19 is connected with the 14 interconnect electricity of the coil pin that outwards extends.
In the intelligent digital electric control air brake valve for the automobile in the embodiment, the valve body shell 6 is also provided with one or more groups of air holes for connecting or discharging control air, and one group of air holes comprises an air inlet 1, an air outlet 2 and an air outlet 3; the air inlet 1, the air outlet 2 and the air outlet 3 are all arranged on the outer surface of the valve body shell 6 and are respectively connected with the air passing pipeline 7; the air inlet 1 is connected with the air inlet 1 through an air passing pipeline; the exhaust port 2 is connected with the exhaust port 2 through an air passing pipeline 7; the air outlet 3 is independently controlled and output; and a protective cover 24 for protecting the internal structure is further arranged, and the protective cover 24 is arranged at the upper end of the valve body shell 6 and covers the outer side of the electromagnetic coil.
The intelligent digital electric control air brake valve for the automobile provided by the embodiment is mainly designed by the following steps:
1. in the intelligent digital electric control air brake valve for the automobile in the embodiment, the electromagnetic valves accurately control the pressure gas and the working air pressure of the pressure gas which is respectively input into and discharged from each group of air passages to the corresponding brake, and the pressure gas and the working air pressure accurately control the braking force, the speed and the duration of each brake, so that the accurate control of starting, maintaining or releasing the brake of the automobile is realized.
2. The intelligent digital electric control air brake valve for the automobile in the embodiment adopts marshalling control and brake locking, adopts the design of a plurality of groups of normally closed electromagnetic valves, and can realize locking of brake air pressure through double air channels and the electromagnetic valves; each channel can control a group of brakes and a group of wheels; the pressure inlet, pressure maintaining, locking and braking states of the air passage can be controlled to maintain a specific pressure value, the pressure is continuously increased or reduced, and a relay valve of the automobile is directly controlled, so that the braking of the automobile is controlled.
3. The intelligent digital electric control air brake valve for the automobile in the embodiment can be directly additionally arranged in the existing brake system of the original automobile, the traditional brake system is not changed, the accurately controlled electric control automatic emergency brake function can be realized, and the manpower and material resources consumed in the process of modifying the automobile brake system are reduced; meanwhile, the brake air circuit of the original automobile is not changed, so that the automobile brake system can be adapted to various automobile brake systems, and the compatibility is strong; meanwhile, the braking operation and the execution time can be greatly shortened, and the running safety of the vehicle is improved.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (4)
1. An intelligent digital electric control air brake valve of an automobile is characterized by comprising a valve body shell and one or more groups of adjustable air passages which are arranged in the valve body shell and can work independently;
each group of adjustable gas circuits comprises: the air inlet, the air outlet, the air inlet electromagnetic valve and the air outlet electromagnetic valve are arranged on the air inlet pipe; the air outlet is connected with an automobile brake control air path, and the input of a control air source is continuously kept in the air inlet; each group of adjustable air passages can control one group of brakes so as to control one group of wheels;
the air inlet electromagnetic valve and the air outlet electromagnetic valve are both normally closed electromagnetic valves; the normally closed electromagnetic valve comprises a valve core used for controlling air intake and air exhaust and an electromagnetic coil which is arranged on the outer side of the valve core and connected with the valve core and used for controlling the normally closed electromagnetic valve to work up and down, and one end of the valve core is connected with an air passing pipeline.
2. The automotive intelligent digital electric control air brake valve according to claim 1, characterized in that each electromagnetic valve is provided with a valve core, and the valve core comprises a fixed core, a movable core and a guide rod which are arranged in the electromagnetic coil; the fixed core and the movable core are both arranged in the guide rod, and the guide rod is a hollow cylinder with one open end; the fixed core is arranged on one side of the inner part of the guide rod, and the movable core is arranged on one side of the outer part of the guide rod; the outward end of the movable core is connected with a vulcanizing body, the vulcanizing body is connected with a spring, and a sealing ring is arranged on the vulcanizing body; the electromagnetic coil comprises a waterproof coil, a coil shell and coil pins extending outwards, the waterproof coil surrounds the outer side of the guide rod, the coil shell covers the outer side of the waterproof coil, and a pressing sleeve used for fixing the waterproof coil in the coil shell is further arranged in the coil shell; the coil shell is a hollow cylinder with two open ends, the end face of one end of the coil shell is provided with a through hole for the guide rod to pass through, the other end of the coil shell is provided with a through hole for the guide rod and the pressing sleeve to pass through, and one side of the coil shell is provided with a through hole for the waterproof coil and the coil pin to pass through; and a buffer pressure pad is also arranged at one end of the coil shell, which is provided with a through hole for passing through the guide rod, and the coil pin is connected with the waterproof coil.
3. An intelligent digital electric control air brake valve for automobiles according to claim 1, characterized in that a pressure sensor and a connection terminal for data access of the sensor are arranged in the valve body housing, the pressure sensor comprises an intake pressure sensor and an exhaust pressure sensor, a main control board, a sensor board and a line passing control board which are electrically connected with each other are also arranged in the valve body housing, the intake pressure sensor and the exhaust pressure sensor are both arranged on the sensor board and electrically connected with the sensor board, the connection terminal is arranged on one side of the bottom of the valve body housing, the upper end surface of the connection terminal is connected with the main control board and electrically connected with the main control board, and the line passing control board is electrically connected with a coil pin which extends outwards.
4. The automotive intelligent digital electric control air brake valve according to claim 1, characterized in that the valve body shell is further provided with one or more groups of air holes for connecting or discharging control air, wherein one group of air holes comprises an air inlet, an air outlet and an air outlet; the air inlet, the air outlet and the air outlet are all arranged on the outer surface of the valve body shell and are respectively connected with the air passing pipeline; the air inlet is connected with the air inlet through an air passing pipeline; the exhaust port is connected with the exhaust port through an air passing pipeline; the air outlet is independently controlled and output; the protective cover is arranged at the upper end of the valve body shell and covers the outer side of the electromagnetic coil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021145670.XU CN212386470U (en) | 2020-06-19 | 2020-06-19 | Intelligent digital electric control air brake valve for automobile |
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| CN202021145670.XU CN212386470U (en) | 2020-06-19 | 2020-06-19 | Intelligent digital electric control air brake valve for automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116799568A (en) * | 2023-08-01 | 2023-09-22 | 江苏速豹动力科技有限公司 | Electrical connection device and electric truck |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116799568A (en) * | 2023-08-01 | 2023-09-22 | 江苏速豹动力科技有限公司 | Electrical connection device and electric truck |
| CN116799568B (en) * | 2023-08-01 | 2023-11-21 | 江苏速豹动力科技有限公司 | Electrical connection device and electric truck |
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