An electronic parking actuator and control system for intelligent driving of commercial vehicles

Abstract

The present invention relates to the field of braking technology, and more particularly, to an electronic parking actuator and control system for intelligent driving of commercial vehicles. The electronic parking actuator includes a distribution component, a housing component, a first adjustment component, and a second adjustment component. The first abutting area is an annular area on the circumferential side of the first hole on the first valve plate away from the first housing; the leakage gap generated by the abutment of the first abutting area and the second valve plate is smaller than the leakage gap generated by the abutment of the second abutting area and the second valve plate; during the rotation of the second valve plate around the central axis of the second valve plate, the electronic parking actuator includes a first working state and a second working state; the first working state includes the abutment of the first abutting area and a part of the second valve plate on the circumferential side of the third groove, and the fourth port, the first communication unit, the third groove, the first hole, and the third port are sequentially communicated; thus, the problem of difficult parking of trailers is solved.

Description

Technical Field

[0001] The present invention relates to the field of braking technology, and in particular, to an electronic parking actuator and control system for intelligent driving of commercial vehicles. Background Art

[0002] With the rapid development of automotive electronic technology, the application of intelligent driving is becoming more and more extensive. The electronic parking brake system is an automotive safety control system that changes the conventional hand control valve and quick release valve into an electronic control unit (NCU) and an electronic parking brake system valve assembly with an internal breathing structure, and combines other systems and logics, having the advantages of compact structure and complete functions. The electronically controlled parking assembly control mechanism for vehicle intelligent driving usually controls the actuator through a distribution valve after receiving a parking instruction, so as to realize the parking and release actions and achieve the intelligent driving of the vehicle.

[0003] During the driving process of a trailer, it is necessary to drive the trailer to move by a tractor. However, during the stopping process of the trailer, due to the large weight of the trailer, the demand for the parking braking force of the trailer is higher. The parking effect is not good and may even cause the trailer to slip, and then the trailer needs a longer braking distance to stop again, seriously affecting the driving safety of the vehicle. Summary of the Invention

[0004] To solve the problem of difficult parking of trailers, the present invention provides an electronic parking actuator and control system for intelligent driving of commercial vehicles.

[0005] In a first aspect, the present embodiment discloses an electronic parking actuator for intelligent driving of commercial vehicles, and the electronic parking actuator includes:

[0006] A distribution component, the distribution component includes a first housing and a first interface unit; the first interface unit includes a first port and a third port; the first port and the third port are respectively connected to the first housing; the third port is communicated with the hollow cavity of the first housing;

[0007] A housing component, the housing component includes a second housing and a second interface unit; the second housing is connected to the first housing; the second interface unit includes a fourth port; the fourth port is connected to the second housing; the fourth port is communicated with the hollow cavity of the second housing;

[0008] A first adjustment component, the first adjustment component includes a first valve plate, a first hole, and a first communication unit; the first valve plate is detachably connected to the side of the hollow cavity of the second housing close to the first housing; the first hole and the first communication unit penetrate through both sides of the thickness direction of the first valve plate; the first hole and the first communication unit are arranged at intervals;

[0009] The second adjusting component, the second adjusting component includes a second valve plate and a third groove; the second valve plate is arranged in the hollow cavity of the second housing; one side of the second valve plate abuts against the side of the first valve plate away from the first housing; the third groove is recessed from one side of the second valve plate close to the first valve plate to the other side; the space surrounded by the second valve plate and the second housing away from the first valve plate forms a pressure space; the pressure space is communicated with the first port; the abutting range of the first valve plate and the second valve plate includes a first abutting area and a second abutting area; the first abutting area is an annular area on the circumferential side of the first hole on the first valve plate away from the first housing side;

[0010] The leakage gap generated by the abutment of the first abutting area and the second valve plate is smaller than the leakage gap generated by the abutment of the second abutting area and the second valve plate;

[0011] During the rotation of the second valve plate around the central axis of the second valve plate, the electronic parking actuator includes a first working state and a second working state; the first working state includes the first abutting area abutting against a part of the second valve plate on the circumferential side of the third groove, and the fourth port, the first communication unit, the third groove, the first hole, and the third port are sequentially communicated; the second working state includes that the first communication unit and / or the first hole are spaced from the third groove.

[0012] In some embodiments, the second abutting area includes a third abutting area and a fourth abutting area; the third abutting area is an annular area on the circumferential side of the first communication unit on the first valve plate away from the first housing side;

[0013] The leakage gap generated by the abutment of the first abutting area and the second valve plate is smaller than the leakage gap generated by the abutment of the fourth abutting area and the second valve plate; the leakage gap generated by the abutment of the third abutting area and the second valve plate is smaller than the leakage gap generated by the abutment of the fourth abutting area and the second valve plate;

[0014] The first working state further includes the first abutting area abutting against a part of the second valve plate on the circumferential side of the third groove, and the third abutting area abutting against another part of the second valve plate on the circumferential side of the third groove.

[0015] In some embodiments, the distribution component further includes a distribution unit; the distribution unit is detachably connected in the hollow cavity of the first housing; the distribution unit divides the hollow cavity of the first housing into a first space and a second space; the first space is arranged on the side of the second space away from the second housing; the space surrounded by the inner peripheral wall of the distribution unit is a third space; the third space is communicated with the third port;

[0016] The first interface unit further includes a second port; the second port is detachably connected to the first housing; the second port communicates with the second space;

[0017] The first adjustment component further includes a third hole, a fourth hole, and a second communication unit; the third hole, the fourth hole, and the second communication unit respectively penetrate through both sides of the first valve plate in the thickness direction; the first hole, the third hole, the first communication unit, the fourth hole, and the second communication unit are sequentially arranged at intervals in a set direction; the first port communicates with the fourth hole; the third hole communicates with the first space; the third hole communicates with the second port; the second communication unit communicates with the fourth port;

[0018] The second adjustment component further includes a fourth groove; the fourth groove is recessed from one side of the second valve plate close to the first valve plate towards the other side;

[0019] The fourth abutting area includes a fifth abutting area and a sixth abutting area; the fifth abutting area is an annular area on the circumferential side of the first valve plate on the side away from the first housing of the third hole;

[0020] The leakage gap generated by the abutment of the fifth abutting area and the second valve plate is smaller than the leakage gap generated by the abutment of the sixth abutting area and the second valve plate;

[0021] The second working state further includes a third working state; the third working state includes that after the first port, the fourth hole, the third groove, the second communication unit, and the second space are sequentially communicated, the distribution unit moves to the state where the first port, the first space, and the second port are sequentially communicated, and the first port, the first space, the third hole, the fourth groove, the first communication unit, and the fourth port are sequentially communicated.

[0022] In some embodiments, the sixth abutting area includes a seventh abutting area and an eighth abutting area; the seventh abutting area is an annular area on the circumferential side of the first valve plate on the side away from the first housing of the fourth hole;

[0023] The leakage gap generated by the abutment of the fifth abutting area and the second valve plate is smaller than the leakage gap generated by the abutment of the seventh abutting area and the second valve plate.

[0024] In some embodiments, the eighth abutting area is an annular area on the circumferential side of the first valve plate on the side away from the first housing of the second communication unit;

[0025] The leakage gap generated by the abutment of the seventh abutting area and the second valve plate is smaller than the leakage gap generated by the abutment of the eighth abutting area and the second valve plate.

[0026] In some embodiments, the second adjusting component further includes a fifth groove; the fifth groove is recessed from one side of the second valve plate close to the first valve plate to the other side; the fifth groove, the fourth groove, and the third groove are sequentially arranged at intervals along the set direction;

[0027] The second working state further includes a fourth working state; the fourth working state includes that after the second space, the second communication unit, the fifth groove, the first hole, the third space, and the third port are sequentially communicated, the distribution unit moves to the second port, the first space, the third space, and the third port are sequentially communicated, and the fourth port, the first communication unit, the fourth groove, the third hole, the first space, the third space, and the third port are sequentially communicated, and at the same time, the first port is disconnected from the second space.

[0028] In some embodiments, the second working state further includes a fifth working state; the fifth working state includes that the first hole, the first communication unit, the third hole, the fourth hole, and the second communication unit are disconnected from each other.

[0029] In some embodiments, the second working state further includes a sixth working state; the sixth working state includes that the fourth port, the first communication unit, the fourth groove, the third hole, and the second port are sequentially communicated.

[0030] In some embodiments, the second working state further includes a seventh working state; the seventh working state includes that the first port, the fourth hole, the third groove, the first communication unit, and the fourth port are sequentially communicated.

[0031] In a second aspect, the present embodiment discloses an electronically controlled parking assembly control system for a commercial vehicle intelligent driving. The electronically controlled parking assembly control system includes any one of the electronic parking actuators in the first aspect, and the electronically controlled parking assembly control system further includes:

[0032] A vehicle body, the first housing and / or the second housing are detachably connected to the vehicle body;

[0033] A flow control component, the flow control component includes a fluid source and a trailer braking part; the fluid source is detachably connected to the vehicle body; the fluid source is communicated with the first port; the trailer braking part is detachably connected to the vehicle body; the trailer braking part is communicated with the fourth port;

[0034] A master control component, the master control component is electrically connected to the flow control component.

[0035] In some embodiments, the dispensing component further includes a dispensing unit; the dispensing unit is detachably connected to the hollow cavity of the first housing; the dispensing unit divides the hollow cavity of the first housing into a first space and a second space; the first space is disposed on a side of the second space away from the second housing;

[0036] The first interface unit further includes a second port; the second port is detachably connected to the first housing; the second port communicates with the second space;

[0037] The flow control component further includes a tractor braking part; the tractor braking part is detachably connected to the vehicle body; the tractor braking part communicates with the second port.

[0038] To solve the problem of difficult parking of trailers, the present invention has the following advantages:

[0039] The first working state includes that a part of the second valve plate on the circumferential side of the first abutting area abuts against the third groove, and the fourth port, the first communication unit, the third groove, the first hole, and the third port are sequentially communicated, so that the fluid in the fourth port can be discharged through the third port, realizing the parking of the trailer. The abutting range of the first valve plate and the second valve plate includes the first abutting area and the second abutting area; the first abutting area is an annular area on the circumferential side of the first hole on the first valve plate away from the first housing; wherein, the leakage gap generated by the abutting of the first abutting area and the second valve plate is smaller than the leakage gap generated by the abutting of the second abutting area and the second valve plate. The smaller leakage gap generated by the abutting of the first abutting area and the second valve plate makes the sealing performance of the first abutting area better, reducing the leakage of the fluid to the circumferential side when flowing through the first hole, thereby improving the parking effect of the trailer and ensuring the safety during the intelligent driving of the vehicle. The larger leakage gap between the second abutting area and the second valve plate makes it easier for the second valve plate to rotate relative to the first valve plate, making it easier for the electronic parking actuator to switch states. Description of the Drawings

[0040] Figure 1 Shows a schematic cross-sectional view of the electronic parking actuator of the first embodiment;

[0041] Figure 2 Shows a schematic cross-sectional view of the electronic parking actuator of the second embodiment;

[0042] Figure 3 Shows a schematic cross-sectional view of the electronic parking actuator of the third embodiment;

[0043] Figure 4 Shows a schematic view of the electronic parking actuator of the first embodiment;

[0044] Figure 5 Shows a schematic view of the electronic parking actuator of the second embodiment;

[0045] Figure 6 Shows a schematic diagram of an electronic parking actuator of a third embodiment;

[0046] Figure 7 Shows a partial schematic diagram of an electronic parking actuator of an embodiment;

[0047] Figure 8 Shows a schematic diagram of a first adjustment component of an embodiment;

[0048] Figure 9 Shows a schematic diagram of a first adjustment component of another embodiment;

[0049] Figure 10 Shows a schematic diagram of a second adjustment component of an embodiment;

[0050] Figure 11 Shows a schematic diagram of a control system of an electronic parking assembly of an embodiment.

[0051] Reference numerals: 01 distribution component; 11 first housing; 12 distribution unit; 121 first distribution module; 1211 elastic part; 1212 fixing part; 1213 movable part; 122 second distribution module; 1221 piston; 1222 flow-through part; 13 first interface unit; 131 first port; 132 second port; 133 third port; 02 first adjustment component; 21 first valve plate; 22 first hole; 23 first communication unit; 231 second hole; 232 first groove; 24 third hole; 25 fourth hole; 26 second communication unit; 261 fifth hole; 262 second groove; 03 second adjustment component; 31 second valve plate; 32 third groove; 33 fourth groove; 34 fifth groove; 04 drive component; 05 housing component; 51 second housing; 52 second interface unit; 521 fourth port; 522 fifth port; 523 sixth port; 53 sealing part; 06 vehicle body; 07 flow control component; 71 fluid source; 72 trailer braking part; 73 tractor braking part; 08 total control component. Detailed implementation manners

[0052] Now, the present disclosure will be described with reference to several exemplary embodiments. It should be understood that these embodiments are described only to enable those of ordinary skill in the art to better understand and thus implement the present disclosure, rather than implying any limitation to the scope of the present disclosure.

[0053] As used herein, the term "comprising" and its variants are to be construed as open-ended terms meaning "including but not limited to". The term "based on" is to be construed as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be construed as "at least one embodiment". The term "another embodiment" is to be construed as "at least one other embodiment". The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. Also, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances. In addition, the terms "installed", "set", "provided with", "connected", "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure. It may be a mechanical connection or an electrical connection. It may be directly connected, or indirectly connected through an intermediate medium, or there may be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality of" is two or more.

[0054] In this embodiment, during the driving of the trailer, it is necessary to drive the trailer to move through the tractor. However, due to the large mass of the trailer, a greater traction force is required when the trailer is parked. When the trailer is parked through the electronic parking actuator, it is necessary to ensure good sealing performance during the flow of the fluid in the electronic parking actuator. Poor parking effect may lead to vehicle creep. At this time, the trailer often requires greater braking force and a longer braking distance to stop again, seriously affecting the driving safety of the trailer. In addition, when the trailer needs to be detached from the tractor, it is necessary for the tractor to move forward a short distance slightly after the trailer stops. Therefore, the braking effect of the trailer needs to be better than that of the tractor. This embodiment discloses an electronic parking actuator, as Figure 1 shown, the electronic parking actuator includes a distribution assembly 01, a housing assembly 05, a first adjustment assembly 02 and a second adjustment assembly 03.

[0055] As Figure 2 shown, the distribution component 01 may include a first housing 11 and a first interface unit 13. The first interface unit 13 may include a first port 131 and a third port 133. The first port 131 and the third port 133 may be connected to the first housing 11 respectively. The third port 133 may communicate with the hollow cavity of the first housing 11, so that the fluid in the hollow cavity of the first housing 11 can be discharged from the third port 133. The housing assembly 05 may include a second housing 51 and a second interface unit 52. The second housing 51 may be connected to the first housing 11. The second interface unit 52 may include a fourth port 521. The fourth port 521 may be connected to the second housing 51. The fourth port 521 may communicate with the hollow cavity of the second housing 51, and the fourth port 521 may communicate with the spring brake cylinder of the trailer. When the fluid moves from the fourth port 521 to the spring brake cylinder of the trailer, the braking force in the spring brake cylinder of the trailer can be offset, and the parking release of the trailer can be realized through the fluid.

[0056] As Figure 8 、 Figure 9 shown, the first adjustment component 02, the first adjustment component 02 may include a first valve plate 21, a first hole 22, and a first communication unit 23. The first valve plate 21 is detachably connected to one side of the hollow cavity of the second housing 51 close to the first housing 11. The first hole 22 and the first communication unit 23 may penetrate through both sides of the thickness direction of the first valve plate 21. The first hole 22 and the first communication unit 23 may be arranged at intervals.

[0057] As Figure 10 shown, the second adjustment component 03, the second adjustment component 03 may include a second valve plate 31 and a third groove 32. The second valve plate 31 may be arranged in the hollow cavity of the second housing 51. One side of the second valve plate 31 may abut against the side of the first valve plate 21 away from the first housing 11. The third groove 32 may be recessed from the side of the second valve plate 31 close to the first valve plate 21 to the other side. The side of the second valve plate 31 away from the first valve plate 21 may form a pressure space with the second housing 51. As Figure 5As shown, the pressure space can communicate with the first port 131. Fluid can flow into the pressure space from the first port 131, so that the fluid can press the second valve plate 31 towards the first valve plate 21, making the contact between the second valve plate 31 and the first valve plate 21 tight, thus ensuring the sealing performance between the first valve plate 21 and the second valve plate 31. The contact range between the first valve plate 21 and the second valve plate 31 can include a first contact area and a second contact area. The first contact area can be an annular area on the circumferential side of the first hole 22 on the first valve plate 21 away from the first housing 11. The materials of the first valve plate 21 and the second valve plate 31 can be ceramics or other rigid materials. Due to the rigid contact between the first valve plate 21 and the second valve plate 31, the gap between the first valve plate 21 and the second valve plate 31 is inevitable. In some other embodiments, the housing assembly 05 can further include a sealing portion 53, and the sealing portion 53 is detachably connected to the side of the hollow cavity of the second housing 51 close to the second valve plate 31, such as Figure 7 As shown, the second valve plate 31 is sealed by the sealing portion 53 to ensure the control accuracy of the control mechanism of the electronic parking assembly.

[0058] The leakage gap generated by the contact between the first contact area and the second valve plate 31 can be smaller than the leakage gap generated by the contact between the second contact area and the second valve plate 31. The smaller leakage gap generated by the contact between the first contact area and the second valve plate 31 makes the sealing performance of the first contact area better, reduces the leakage of the fluid to the circumferential side when flowing through the first hole 22, and further improves the parking effect of the trailer, ensuring the safety during the intelligent driving of the vehicle. The larger leakage gap between the second contact area and the second valve plate 31 makes it easier for the second valve plate 31 to rotate between the first valve plate 21, and makes it easier for the electronic parking actuator to switch states. During the rotation of the second valve plate 31 around the central axis of the second valve plate 31, the electronic parking actuator can include a first working state and a second working state. The first working state can include the contact between the first contact area and a part of the second valve plate 31 on the circumferential side of the third groove 32, and the fourth port 521, the first communication unit 23, the third groove 32, the first hole 22, and the third port 133 are connected in sequence. At this time, the fluid can flow through the fourth port 521, the first communication unit 23, the third groove 32, the first hole 22, and the third port 133 in sequence, and then the fluid can be discharged from the third port 133, so that the spring in the spring brake cylinder of the trailer can apply a braking force to the trailer parking brake to realize the parking of the trailer. Since the leakage gap generated by the contact between the first contact area and the second valve plate 31 is small, the sealing performance is good when the fluid flows through the first hole 22, and the fluid is not likely to leak, so that the parking effect of the trailer is better, meeting the safety requirements of vehicle intelligent driving. The second working state can include that the first communication unit 23 and / or the first hole 22 are spaced from the third groove 32.

[0059] In this embodiment, the second abutting region may include a third abutting region and a fourth abutting region. The third abutting region may be an annular region on the circumferential side of the first communication unit 23 on the first valve plate 21 away from the first housing 11.

[0060] The leakage gap generated by the abutment of the first abutting region and the second valve plate 31 may be smaller than the leakage gap generated by the abutment of the fourth abutting region and the second valve plate 31. The leakage gap generated by the abutment of the third abutting region and the second valve plate 31 may be smaller than the leakage gap generated by the abutment of the fourth abutting region and the second valve plate 31.

[0061] The first working state may further include the abutment of the first abutting region with a part of the second valve plate 31 on the circumferential side of the third groove 32, and the abutment of the third abutting region with another part of the second valve plate 31 on the circumferential side of the third groove 32. Since in the first working state, the fluid needs to flow through the fourth port 521, the first communication unit 23, the third groove 32, the first hole 22, and the third port 133 in sequence, in order to ensure the parking brake effect of the trailer, it is also necessary to ensure the sealing performance between the third abutting region and the second valve plate 31. Therefore, the leakage gap generated by the abutment of the third abutting region and the second valve plate 31 can be made smaller, so that the leakage between the fluid and the second valve plate 31 when passing through the third abutting region is small. At the same time, it can also prevent the fluid in the pressure space from entering the first communication unit 23 through the gap between the third abutting region and the second valve plate 31, interfering with the outflow of the fluid from the fourth port 521, resulting in a slowdown or even backflow of the outflow speed of the fluid from the fourth port 521, and further affecting the parking of the trailer, further improving the parking effect of the trailer, and ensuring the safety during the intelligent driving of the vehicle. The larger leakage gap between the fourth abutting region and the second valve plate 31 makes it easier for the second valve plate 31 to rotate relative to the first valve plate 21, and makes it easier for the electronic parking actuator to switch states.

[0062] In this embodiment, the distribution assembly 01 may further include a distribution unit 12. The distribution unit 12 is detachably connected to the hollow cavity of the first housing 11. The distribution unit 12 can divide the hollow cavity of the first housing 11 into a first space and a second space. The first space may be arranged on the side of the second space away from the second housing 51. The space surrounded by the inner peripheral wall of the distribution unit 12 may be a third space. As Figure 6 shown, the third space may communicate with the third port 133, and the fluid in the third space can be discharged through the third port 133.

[0063] As Figure 3As shown, the first interface unit 13 may further include a second port 132. The second port 132 is detachably connected to the first housing 11. The second port 132 may communicate with the second space. The second port 132 may communicate with the spring brake cylinder of the tractor, so that fluid can enter the spring brake cylinder of the tractor through the second port 132. When the fluid moves from the second port 132 to the spring brake cylinder of the tractor, the braking force in the spring brake cylinder of the tractor can be offset, and the parking release of the tractor can be realized through the fluid. The first adjustment assembly 02 may further include a third hole 24, a fourth hole 25, and a second communication unit 26. The third hole 24, the fourth hole 25, and the second communication unit 26 may respectively penetrate through both sides in the thickness direction of the first valve plate 21. The first hole 22, the third hole 24, the first communication unit 23, the fourth hole 25, and the second communication unit 26 may be sequentially arranged at intervals along a set direction, and the set direction may be clockwise or counterclockwise. The first port 131 may communicate with the fourth hole 25. The third hole 24 may communicate with the first space. The third hole 24 may communicate with the second port 132. The second communication unit 26 may communicate with the fourth port 521. In some other embodiments, the first interface unit 13 may include two second ports 132, the two second ports 132 may be arranged at intervals, and the two second ports 132 are respectively detachably connected to the first housing 11. The two second ports 132 may respectively communicate with the second space. The two second ports 132 may respectively communicate with the spring brake cylinder of the tractor, so that fluid can respectively enter the spring brake cylinder of the tractor through the two second ports 132. When the fluid respectively moves from the two second ports 132 to the spring brake cylinder of the tractor, the braking force in the spring brake cylinder of the tractor can be offset, and the parking release of the tractor can be realized through the fluid. Through the arrangement of the two second ports 132, the parking control response of the tractor can be made faster and more efficient.

[0064] The second adjustment assembly 03 may further include a fourth groove 33. The fourth groove 33 may be recessed from one side of the second valve plate 31 close to the first valve plate 21 to the other side.

[0065] The fourth abutting area may include a fifth abutting area and a sixth abutting area. The fifth abutting area may be an annular area on the circumferential side of the third hole 24 on the first valve plate 21 away from the first housing 11.

[0066] The leakage gap generated by the fifth abutting region abutting against the second valve plate 31 can be smaller than the leakage gap generated by the sixth abutting region abutting against the second valve plate 31. The smaller leakage gap generated by the fifth abutting region abutting against the second valve plate 31 makes the sealing performance of the fifth abutting region better, reduces the lateral leakage of the fluid flowing through the third hole 24, thereby improving the parking release effect of the trailer and ensuring the safety during the intelligent driving of the vehicle. The larger leakage gap between the sixth abutting region and the second valve plate 31 makes it easier for the second valve plate 31 to rotate between the first valve plate 21, making it easier for the electronic parking actuator to switch states.

[0067] The second working state may further include a third working state. The third working state may include that after the first port 131, the fourth hole 25, the third groove 32, the second communication unit 26, and the second space are communicated in sequence, the distribution unit 12 may move to the state where the first port 131, the first space, and the second port 132 are communicated in sequence, and the first port 131, the first space, the third hole 24, the fourth groove 33, the first communication unit 23, and the fourth port 521 are communicated in sequence.

[0068] The third working state may include that the fluid passes through the first port 131, the fourth hole 25, the third groove 32, the second communication unit 26, and the second space in sequence to move the distribution unit 12 to communicate the first port 131 with the first space. Subsequently, the fluid passes through the first port 131, the first space, and the second port 132 in sequence. The second port 132 may be communicated with the spring brake cylinder of the tractor, so that the fluid in the first port 131 can enter the spring brake cylinder of the tractor through the second port 132. When the fluid moves from the second port 132 to the spring brake cylinder of the tractor, the braking force in the spring brake cylinder of the tractor can be offset, and the parking release of the tractor is realized through the fluid. And the fluid passes through the first port 131, the first space, the third hole 24, the fourth groove 33, the first communication unit 23, and the fourth port 521 in sequence. The fourth port 521 may be communicated with the spring brake cylinder of the trailer. When the fluid moves from the fourth port 521 to the spring brake cylinder of the trailer, the braking force in the spring brake cylinder of the trailer can be offset, and the parking release of the trailer is realized through the fluid.

[0069] In this embodiment, the sixth abutting region may include a seventh abutting region and an eighth abutting region. The seventh abutting region may be an annular region on the circumferential side of the fourth hole 25 on the first valve plate 21 away from the first housing 11.

[0070] The leakage gap generated by the contact between the fifth contact area and the second valve plate 31 is smaller than the leakage gap generated by the contact between the seventh contact area and the second valve plate 31. The smaller leakage gap generated by the contact between the fifth contact area and the second valve plate 31 results in better sealing performance of the fifth contact area, reducing the lateral leakage of the fluid when flowing through the third hole 24, thereby improving the parking release effect of the trailer and ensuring the safety during the intelligent driving of the vehicle. Since the fluid needs to flow out of the spring brake cylinder of the trailer when the trailer parking is cancelled, the leakage gap generated by the contact between the fifth contact area and the second valve plate 31 can be smaller than the leakage gap generated by the contact between the seventh contact area and the second valve plate 31. At the same time, the larger leakage gap between the seventh contact area and the second valve plate 31 makes it easier for the second valve plate 31 to rotate with the first valve plate 21, making it easier for the electronic parking actuator to switch states.

[0071] In this embodiment, the eighth contact area may be an annular area on the circumferential side of the second communication unit 26 on the first valve plate 21 away from the first housing 11.

[0072] The leakage gap generated by the contact between the seventh contact area and the second valve plate 31 is smaller than the leakage gap generated by the contact between the eighth contact area and the second valve plate 31. Since the fifth hole 261 communicates with the upper chamber of the distribution unit 12, parking can be achieved as long as part of the fluid in the upper chamber of the distribution unit 12 is discharged through the fifth hole 261. Even if the fluid is discharged between the first valve plate 21 and the second valve plate 31, the distribution unit 12 can move to the first space, and the third port 133 can communicate with the third space, enabling the first space and the third port 133 to communicate through the third space to cancel parking. Therefore, the sealing of the eighth contact area can be relatively poor. At the same time, the larger leakage gap between the eighth contact area and the second valve plate 31 makes it easier for the second valve plate 31 to rotate with the first valve plate 21, making it easier for the electronic parking actuator to switch states. In some other embodiments, the second communication unit 26 may further include a fifth hole 261 and a second groove 262. The second groove 262 is recessed from the side of the first valve plate 21 close to the second valve plate 31 towards the other side. The fifth hole 261 may be disposed in the second groove 262. The fifth hole 261 may penetrate both sides of the first valve plate 21 in the thickness direction. The second groove 262 may provide a channel for the fluid to flow through the fifth hole 261. By providing the fifth hole 261, the second groove 262 can have a certain structural strength. The eighth contact area may be an annular area on the circumferential side of the second groove 262 on the first valve plate 21 away from the first housing 11. After the trailer is parked, as long as the leakage gap between the eighth contact area and the second valve plate 31 is small and the second hole 231 does not admit fluid, stability can be maintained.

[0073] In this embodiment, the second adjustment assembly 03 may further include a fifth groove 34. The fifth groove 34 may be recessed from the side of the second valve plate 31 close to the first valve plate 21 towards the other side. The fifth groove 34, the fourth groove 33, and the third groove 32 may be sequentially arranged at intervals along a set direction.

[0074] The second working state may further include a fifth working state. The fifth working state may include that after the second space, the second communication unit 26, the fifth groove 34, the first hole 22, the third space, and the third port 133 are sequentially communicated, the fluid in the second space can be discharged from the third port 133, and the distribution unit 12 moves to a state where the second port 132, the first space, the third space, and the third port 133 are sequentially communicated, and the fourth port 521, the first communication unit 23, the fourth groove 33, the third hole 24, the first space, the third space, and the third port 133 can be sequentially communicated. At this time, the fluid in the spring brake cylinder of the tractor can flow through the second port 132, the first space, the third space, and the third port 133 in sequence, and then the fluid can be discharged from the third port 133, so that the spring in the spring brake cylinder of the tractor can apply a braking force to the tractor parking brake to achieve the parking of the tractor. At the same time, the fluid in the spring brake cylinder of the trailer can flow through the fourth port 521, the first communication unit 23, the fourth groove 33, the third hole 24, the first space, the third space, and the third port 133 in sequence, and then the fluid can be discharged from the third port 133, so that the spring in the spring brake cylinder of the trailer can apply a braking force to the trailer parking brake to achieve the parking of the trailer. At the same time, the first port 131 can be disconnected from the second space, so that the fluid cannot enter the second port 132 and the fourth port 521 through the second space.

[0075] In this embodiment, the second working state may further include a sixth working state. The sixth working state may include that the first hole 22, the first communication unit 23, the third hole 24, the fourth hole 25, and the second communication unit 26 are disconnected from each other. Thereby, the fluid cannot enter the spring brake cylinders of the trailer and the tractor, ensuring that the pressure of the fluid in the spring brake cylinders of the trailer and the tractor remains unchanged, so that the electronic parking actuator can maintain the previous working state, realizing the voltage stabilization of the electronic parking actuator and ensuring the safety during the intelligent driving of the vehicle. After the trailer parking is released, the fluid pressure in the upper chamber of the distribution unit 12 is insufficient. At this time, the vehicle is in the starting state and can be adjusted to the parking release state at any time. By supplying pressure to the upper chamber of the distribution unit 12, the stability of the pressure is ensured. In some other embodiments, the first communication unit 23 may further include a second hole 231 and a first groove 232. The first groove 232 is recessed from one side of the first valve plate 21 close to the second valve plate 31 to the other side. The second hole 231 may be disposed in the first groove 232. The second hole 231 may penetrate through both sides of the first valve plate 21 in the thickness direction. The first groove 232 may provide a channel for the fluid to flow through the second hole 231. By providing the first hole 22, the first groove 232 can have a certain structural strength. The third abutting region may be an annular region on the circumferential side of the first groove 232 on the first valve plate 21 away from the first housing 11. After the trailer is parked, as long as the leakage gap between the third abutting region and the second valve plate 31 is small and the second hole 231 does not enter the fluid, stability can be maintained.

[0076] In this embodiment, the second working state may further include a seventh working state. The seventh working state may include the fourth port 521, the first communication unit 23, the fourth groove 33, the third hole 24, and the second port 132 being connected in sequence. That is, at this time, the fluid in the spring brake cylinder of the trailer can flow through the fourth port 521, the first communication unit 23, the fourth groove 33, the third hole 24, and the second port 132 to communicate with the fluid in the spring brake cylinder of the tractor, so that the fluid pressures in the spring brake cylinders of the trailer and the tractor are the same, enabling the trailer and the tractor to simultaneously maintain the previous working state, achieving voltage stabilization of the electronic parking actuator, and ensuring safety during the intelligent driving process of the vehicle. In some other embodiments, the distribution unit 12 may include a first distribution module 121 and a second distribution module 122. The first distribution module 121 may include an elastic part 1211, a fixed part 1212, and a movable part 1213. The fixed part 1212 is detachably connected to one end of the first housing 11 away from the second housing 51. The space surrounded by the inner peripheral wall of the fixed part 1212 may communicate with the third port 133. The elastic part 1211 is detachably connected to the fixed part 1212. The movable part 1213 is detachably connected to one end of the elastic part 1211 close to the second housing 51. The second distribution module 122 may be slidably connected to the first housing 11. The second distribution module 122 may move in a direction close to or away from the second housing 51. The second distribution module 122 may drive the movable part 1213 to move in a direction close to or away from the second housing 51. The second distribution module 122 may include a piston 1221 and a flow-through part. The flow-through part 1222 may be disposed in the space surrounded by the first housing 11. One end of the flow-through part 1222 is fixedly connected to the side of the first housing 11 close to the second housing 51, and the other end extends in a direction close to the first distribution module 121. The inner peripheral wall of the flow-through part 1222 may communicate with the fourth hole 25. The flow-through part 1222 may be spaced apart from the first distribution module 121. The inner peripheral wall of the piston 1221 may slidably connect to the outer peripheral wall of the flow-through part 1222. The outer peripheral wall of the piston 1221 may slidably connect to the inner peripheral wall of the first housing 11. The piston 1221 may move in a direction close to or away from the first distribution module 121. The fluid in the upper chamber of the piston 1221 drives the piston 1221 to move, so that the piston 1221 can drive the movable part 1213 to control the opening and closing of the fourth hole 25, realizing the control of trailer parking and tractor parking, and meeting the intelligent driving requirements of the vehicle.

[0077] In this embodiment, the second working state may further include a seventh working state. The seventh working state may include the sequential connection of the first port 131, the fourth hole 25, the third groove 32, the first communication unit 23, and the fourth port 521. At this time, the fluid in the first port 131 can flow through the fourth hole 25, the third groove 32, the first communication unit 23, and the fourth port 521 in sequence. The fourth port 521 can be connected to the spring brake cylinder of the trailer. When the fluid moves from the fourth port 521 to the spring brake cylinder of the trailer, the braking force in the spring brake cylinder of the trailer can be offset, and the parking release of the trailer can be achieved through the fluid. In some other embodiments, as Figure 4 shown, the second interface unit 52 may further include a fifth port 522 and a sixth port 523. The fifth port 522 can be connected to the second housing 51, and the sixth port 523 can be connected to the second housing 51. The fifth port 522 can be connected to the fourth port 521, and the fifth port 522 can be connected to a pressure sensor to monitor the flow rate of the fluid flowing through the spring brake cylinder of the trailer through the change in the pressure value of the fluid. The sixth port 523 can be connected to the second space, and a manual fluid switch can be connected to one end of the sixth port 523 away from the second space. When a failure occurs in the electronic control parking assembly control mechanism, the fluid in the second space can be discharged from the sixth port 523 to the external space of the electronic control parking assembly control mechanism by operating the manual fluid switch, so that the connection between the first port 131 and the first space is disconnected, and the first space and the third space are connected, so that the fluid in the spring brake cylinder of the tractor can pass through the second port 132, the first space, the third space, and the third port 133 in sequence, and at the same time, the fluid in the spring brake cylinder of the trailer can pass through the fourth port 521, the first space, the third space, and the third port 133 in sequence, thereby realizing the parking brake of the trailer and the tractor.

[0078] This embodiment discloses an electronic control parking assembly control system for intelligent driving of commercial vehicles. The electronic control parking assembly control system may include any one of the electronic parking actuators in the first aspect, such as Figure 11 shown, the electronic control parking assembly control system further includes:

[0079] A vehicle body 06, and the first housing 11 and / or the second housing 51 are detachably connected to the vehicle body 06.

[0080] A flow control component 07, and the flow control component 07 may include a fluid source 71 and a trailer braking part 72. The fluid source 71 is detachably connected to the vehicle body 06. The fluid source 71 is connected to the first port 131, so that the fluid can flow from the fluid source 71 into the first port 131, and then into the electronic parking actuator, realizing the intelligent driving of the vehicle. The trailer braking part 72 is detachably connected to the vehicle body 06. The trailer braking part 72 can be connected to the fourth port 521, so that the fluid can flow into the trailer braking part 72 through the fourth port 521, and then the control of the trailer can be realized.

[0081] The master control component 08 can be electrically connected to the flow control component 07, enabling the master control component 08 to control the flow control component 07. In some other embodiments, the electronic parking assembly control system may further include a driving component 04. The driving component 04 can be detachably connected to the second housing 51. The driving component 04 can be drivingly connected to the second valve plate 31 to drive the second valve plate 31 to rotate about the central axis of the second valve plate 31.

[0082] In this embodiment, the distribution component 01 may further include a distribution unit 12. The distribution unit 12 is detachably connected in the hollow cavity of the first housing 11. The distribution unit 12 can divide the hollow cavity of the first housing 11 into a first space and a second space. The first space can be arranged on the side of the second space away from the second housing 51. By controlling the flow of fluid between the first space and the second space through the distribution unit 12, the distribution unit 12 can control the electronic parking assembly control system.

[0083] The first interface unit 13 further includes a second port 132. The second port 132 is detachably connected to the first housing 11. The second port 132 communicates with the second space. So that fluid can enter the second port 132 through the second space, thereby realizing the control of the tractor.

[0084] The flow control component 07 further includes a tractor braking part 73. The tractor braking part 73 is detachably connected to the vehicle body 06. The tractor braking part 73 communicates with the second port 132. So that fluid can flow into the tractor braking part 73 through the second port 132, thereby realizing the control of the tractor braking.

[0085] Those of ordinary skill in the art can understand that the above embodiments are specific cases for implementing the present disclosure, and in practical applications, various changes can be made in form and details without departing from the scope of the present disclosure.

Claims

1. An electronic parking actuator for intelligent driving of commercial vehicles, characterized in that: The electronic parking actuator comprises: A distribution component, the distribution component includes a first shell and a first interface unit; the first interface unit includes a first port and a third port; the first port and the third port are respectively connected to the first shell; the third port is connected to the hollow cavity of the first shell; A shell assembly, the shell assembly comprising a second shell and a second interface unit; the second shell is connected to the first shell; the second interface unit comprises a fourth port; the fourth port is connected to the second shell; the fourth port is communicated with the hollow cavity of the second shell; a first regulating component, the first regulating component comprising a first valve sheet, a first hole, and a first connecting unit; the first valve sheet is detachably connected to a side of the hollow cavity of the second shell close to the first shell; the first hole and the first connecting unit penetrate both sides of the first valve sheet in a thickness direction; the first hole and the first connecting unit are arranged at intervals; A second regulating assembly, the second regulating assembly comprising a second valve sheet and a third groove; the second valve sheet is arranged in the hollow cavity of the second shell; one side of the second valve sheet abuts against the side of the first valve sheet away from the first shell; the third groove is recessed from the side of the second valve sheet close to the first valve sheet toward the other side; the side of the second valve sheet away from the first valve sheet is surrounded by the second shell to form a pressure space; the pressure space is connected to the first port; the range of abutment between the first valve sheet and the second valve sheet includes a first abutment area and a second abutment area; the first abutment area is an annular area on the circumference of the first hole on the first valve sheet away from the first shell; The leakage gap generated by the abutment between the first abutting area and the second valve plate is smaller than the leakage gap generated by the abutment between the second abutting area and the second valve plate; During the rotation of the second valve plate around the central axis of the second valve plate, the electronic parking actuator includes a first working state and a second working state; the first working state includes the first abutment area abutting against a portion of the second valve plate on the periphery of the third groove, and the fourth port, the first connecting unit, the third groove, the first hole, and the third port are connected in sequence; the second working state includes the first connecting unit and / or the first hole being spaced apart from the third groove.

2. The electronic parking actuator according to claim 1, characterized in that: The second abutting area includes a third abutting area and a fourth abutting area; the third abutting area is an annular area on the circumferential side of the first connecting unit on the first valve sheet away from the first housing; The leakage gap generated by the abutment between the first abutting area and the second valve sheet is smaller than the leakage gap generated by the abutment between the fourth abutting area and the second valve sheet; the leakage gap generated by the abutment between the third abutting area and the second valve sheet is smaller than the leakage gap generated by the abutment between the fourth abutting area and the second valve sheet; The first working state also includes the first abutting area abutting against a portion of the second valve plate on the circumference of the third groove, and the third abutting area abutting against another portion of the second valve plate on the circumference of the third groove.

3. The electronic parking actuator according to claim 2, characterized in that: The distribution assembly further includes a distribution unit; the distribution unit is detachably connected to the hollow cavity of the first shell; the distribution unit divides the hollow cavity of the first shell into a first space and a second space; The first space is arranged on a side of the second space away from the second shell; the space surrounded by the inner peripheral wall of the distribution unit is the third space; the third space is connected to the third port; The first interface unit further includes a second port; the second port is detachably connected to the first housing; the second port is in communication with the second space; The first regulating assembly further includes a third hole, a fourth hole, and a second connecting unit; the third hole, the fourth hole, and the second connecting unit respectively penetrate both sides of the first valve sheet in the thickness direction; the first hole, the third hole, the first connecting unit, the fourth hole, and the second connecting unit are sequentially arranged at intervals along a set direction; the first port is connected to the fourth hole; the third hole is connected to the first space; the third hole is connected to the second port; and the second connecting unit is connected to the fourth port; The second adjustment component further includes a fourth groove; the fourth groove is recessed from one side of the second valve sheet close to the first valve sheet toward the other side; The fourth abutment area includes a fifth abutment area and a sixth abutment area; the fifth abutment area is an annular area on the circumferential side of the third hole on the first valve sheet away from the first housing; The leakage gap generated by the abutment between the fifth abutting area and the second valve plate is smaller than the leakage gap generated by the abutment between the sixth abutting area and the second valve plate; The second working state also includes a third working state; the third working state includes that after the first port, the fourth hole, the third groove, the second connecting unit, and the second space are connected in sequence, the distribution unit moves to the first port, the first space, and the second port are connected in sequence, and the first port, the first space, the third hole, the fourth groove, the first connecting unit, and the fourth port are connected in sequence.

4. The electronic parking actuator according to claim 3, characterized in that: The sixth abutment area includes a seventh abutment area and an eighth abutment area; the seventh abutment area is an annular area on the circumferential side of the fourth hole on the first valve sheet away from the first housing; A leakage gap generated by the abutment between the fifth abutting area and the second valve sheet is smaller than a leakage gap generated by the abutment between the seventh abutting area and the second valve sheet.

5. The electronic parking actuator according to claim 4, characterized in that: The eighth abutting area is an annular area on the first valve sheet on the circumferential side of the second communication unit away from the first housing; A leakage gap generated by the abutment between the seventh abutting area and the second valve sheet is smaller than a leakage gap generated by the abutment between the eighth abutting area and the second valve sheet.

6. The electronic parking actuator according to claim 5, characterized in that: The second adjustment component further includes a fifth groove; the fifth groove is recessed from one side of the second valve sheet close to the first valve sheet toward the other side; the fifth groove, the fourth groove, and the third groove are sequentially spaced along the set direction; The second working state also includes a fourth working state; the fourth working state includes that the second space, the second connecting unit, the fifth groove, the first hole, the third space, and the third port are connected in sequence, and then the distribution unit moves to the second port, the first space, the third space, and the third port are connected in sequence, and the fourth port, the first connecting unit, the fourth groove, the third hole, the first space, the third space, and the third port are connected in sequence, and at the same time, the first port is disconnected from the second space.

7. The electronic parking actuator according to claim 6, characterized in that: The second working state also includes a fifth working state; the fifth working state includes the first hole, the first connecting unit, the third hole, the fourth hole, and the second connecting unit being disconnected from each other.

8. The electronic parking actuator according to claim 7, characterized in that: The second working state also includes a sixth working state; the sixth working state includes the fourth port, the first connecting unit, the fourth groove, the third hole, and the second port being connected in sequence.

9. The electronic parking actuator according to claim 3, characterized in that: The second working state also includes a seventh working state; the seventh working state includes the first port, the fourth hole, the third groove, the first connecting unit, and the fourth port being connected in sequence.

10. An electronic parking control system for intelligent driving of commercial vehicles, characterized in that: The electronic parking assembly control system includes the electronic parking actuator according to any one of claims 1 to 9, and the electronic parking assembly control system also includes: a vehicle body, the first shell and / or the second shell being detachably connected to the vehicle body; A flow control component, the flow control component comprises a fluid source and a trailer brake part; the fluid source is detachably connected to the vehicle body; the fluid source is communicated with the first port; the trailer brake part is detachably connected to the vehicle body; the trailer brake part is communicated with the fourth port; A master control component is electrically connected to the flow control component.

11. The electronic parking control system according to claim 10, characterized in that: The distribution assembly further includes a distribution unit; the distribution unit is detachably connected to the hollow cavity of the first shell; the distribution unit divides the hollow cavity of the first shell into a first space and a second space; the first space is arranged on a side of the second space away from the second shell; The first interface unit further includes a second port; the second port is detachably connected to the first housing; the second port is in communication with the second space; The flow control component also includes a tractor brake part; the tractor brake part is detachably connected to the vehicle body; and the tractor brake part is in communication with the second port.

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