Electronic parking executing mechanism and control system for intelligent driving of commercial vehicle

Abstract

The invention relates to the technical field of braking, in particular to an electronic parking executing mechanism for intelligent driving of a commercial vehicle and a control system. The electronic parking executing mechanism comprises a distribution assembly, a shell assembly, a first adjusting assembly and a second adjusting assembly. The first abutting area is an annular area on the peripheral side, away from one side of the first shell, of the first hole in the first valve plate; a leakage gap generated by abutting of the first abutting area and the second valve plate is smaller than a leakage gap generated by abutting of the second abutting area and the second valve plate. In the process that the second valve plate rotates around the central axis of the second valve plate, the electronic parking executing mechanism comprises a first working state and a second working state; in the first working state, the first abutting area abuts against part of the second valve plate on the peripheral side of the third groove, and the fourth opening, the first communicating unit, the third groove, the first hole and the third opening communicate in sequence; therefore, the problem that the trailer is difficult to park 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 replaces the conventional manual valve and quick release valve with an electronic control unit (NCU) and an electronic parking brake system valve assembly with an internal breathing structure, and combines other systems and logics. It has the advantages of compact structure and complete functions. The control mechanism of the electronic parking assembly for intelligent driving of vehicles usually controls the actuator through the distribution valve after receiving the parking command, thereby realizing the parking and release actions and realizing the intelligent driving of the vehicle.

[0003] During the driving process of the trailer, it needs to be moved by a tractor. However, during the stopping process of the trailer, due to its heavy weight, the demand for the parking brake force of the trailer is higher. Poor parking effect may even cause the trailer to slip, which will cause the trailer to require a longer braking distance to stop again, seriously affecting the driving safety of the vehicle. Summary of the invention

[0004] In order to solve the problem of trailer parking difficulties, the present invention provides an electronic parking actuator and control system for intelligent driving of commercial vehicles.

[0005] In a first aspect, this embodiment discloses an electronic parking actuator for intelligent driving of a commercial vehicle, the electronic parking actuator comprising: 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.

[0006] 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 circumference 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.

[0007] In some embodiments, 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 a 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.

[0008] In some embodiments, 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.

[0009] In some embodiments, the eighth abutment area is an annular area on the first valve sheet on the circumference 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.

[0010] In some embodiments, 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.

[0011] In some embodiments, the second working state further 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.

[0012] In some embodiments, the second working state further 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.

[0013] In some embodiments, the second working state further 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.

[0014] In a second aspect, this embodiment discloses an electronic parking assembly control system for intelligent driving of a commercial vehicle, wherein the electronic parking assembly control system comprises any electronic parking actuator described in the first aspect, and the electronic parking assembly control system further comprises: 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.

[0015] In some embodiments, the distribution assembly further comprises 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.

[0016] In order to solve the problem of difficult parking of trailers, the present invention has the following advantages: The first working state includes the first abutting area abutting against part of the second valve disc on the circumferential side 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, so that the fluid in the fourth port can be discharged through the third port to achieve the parking of the trailer. The range of the abutment between the first valve disc and the second valve disc 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 disc away from the first shell; wherein the leakage gap generated by the abutment between the first abutting area and the second valve disc is smaller than the leakage gap generated by the abutment between the second abutting area and the second valve disc, and the smaller leakage gap generated by the abutment between the first abutting area and the second valve disc makes the sealing of the first abutting area better, reduces 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 of the vehicle during intelligent driving. The larger leakage gap between the second abutting area and the second valve disc makes it easier for the second valve disc to rotate with the first valve disc, making it easier for the electronic parking actuator to switch states. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-sectional schematic diagram of an electronic parking actuator of a first embodiment is shown; Figure 2 A cross-sectional schematic diagram of an electronic parking actuator of a second embodiment is shown; Figure 3 A cross-sectional schematic diagram of an electronic parking actuator of a third embodiment is shown; Figure 4 A schematic diagram of an electronic parking actuator according to a first embodiment is shown; Figure 5 A schematic diagram of an electronic parking actuator according to a second embodiment is shown; Figure 6 A schematic diagram of an electronic parking actuator according to a third embodiment is shown; Figure 7 A partial schematic diagram of an electronic parking actuator according to an embodiment is shown; Figure 8 A schematic diagram of a first adjustment component of an embodiment is shown; Fig. 9 A schematic diagram of a first adjustment component of another embodiment is shown; Fig.10 A schematic diagram of a second adjustment assembly according to an embodiment is shown; Fig.11 A schematic diagram of an electronically controlled parking assembly control system according to an embodiment is shown.

[0018] Figure numerals: 01 distribution assembly; 11 first housing; 12 distribution unit; 121 first distribution module; 1211 elastic part; 1212 fixed 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 assembly; 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 connecting unit; 261 fifth hole; 262 second slot; 03 second adjusting assembly; 31 second valve plate; 32 third slot; 33 fourth slot; 34 fifth slot; 04 driving assembly; 05 shell assembly; 51 second shell; 52 second interface unit; 521 fourth port; 522 fifth port; 523 sixth port; 53 sealing part; 06 vehicle body; 07 flow control assembly; 71 fluid source; 72 trailer brake part; 73 tractor brake part; 08 general control assembly. DETAILED DESCRIPTION

[0019] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0020] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the 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, "multiple" means two or more.

[0021] In this embodiment, the trailer needs to be moved by the tractor during its travel. However, due to the large mass of the trailer, a greater traction force is required when parking the trailer. When the trailer is parked by the electronic parking actuator, it is necessary to ensure that the fluid has good sealing during the flow through the electronic parking actuator. Poor parking effect may cause the trailer to slip. At this time, the trailer often requires greater braking force and longer braking distance to stop again, which seriously affects the driving safety of the trailer. In addition, when the trailer needs to be separated from the tractor, the tractor needs to drive slightly forward for a distance after the trailer stops, so the braking effect of the trailer needs to be better than that of the tractor. This embodiment discloses an electronic parking actuator, such as Figure 1 As shown, the electronic parking actuator includes a distribution component 01 , a housing component 05 , a first adjustment component 02 and a second adjustment component 03 .

[0022] like Figure 2 As 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 be communicated 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 component 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 be communicated with the hollow cavity of the second housing 51, and 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 by the fluid.

[0023] like Figure 8 , Fig. 9 As shown, the first adjustment component 02 may include a first valve plate 21, a first hole 22, and a first connecting unit 23. The first valve plate 21 is detachably connected to a side of the hollow cavity of the second housing 51 close to the first housing 11. The first hole 22 and the first connecting unit 23 may penetrate both sides of the first valve plate 21 in the thickness direction. The first hole 22 and the first connecting unit 23 may be arranged at intervals.

[0024] like Fig.10 As shown, the second regulating component 03 may include a second valve disc 31 and a third groove 32. The second valve disc 31 may be disposed in the hollow cavity of the second housing 51. One side of the second valve disc 31 may abut against the side of the first valve disc 21 away from the first housing 11. The third groove 32 may be recessed from the side of the second valve disc 31 close to the first valve disc 21 toward the other side. The side of the second valve disc 31 away from the first valve disc 21 may be surrounded by the second housing 51 to form a pressure space. Figure 5As shown, the pressure space can be connected to the first port 131. The fluid can flow into the pressure space from the first port 131, so that the fluid can squeeze the second valve disc 31 toward the first valve disc 21, so that the second valve disc 31 and the first valve disc 21 are tightly abutted, thereby ensuring the sealing between the first valve disc 21 and the second valve disc 31. The abutment range of the first valve disc 21 and the second valve disc 31 may include a first abutment area and a second abutment area. The first abutment area may be an annular area on the circumferential side of the first hole 22 on the first valve disc 21 away from the first shell 11. The material of the first valve disc 21 and the second valve disc 31 may be ceramic or other rigid materials. Due to the rigid abutment between the first valve disc 21 and the second valve disc 31, a gap between the first valve disc 21 and the second valve disc 31 cannot be avoided. In other embodiments, the shell assembly 05 may also include a sealing portion 53, and the sealing portion 53 is detachably connected to a side of the hollow cavity of the second shell 51 close to the second valve disc 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 electronically controlled parking assembly.

[0025] The leakage gap generated by the abutment between the first abutting area and the second valve disc 31 can be smaller than the leakage gap generated by the abutment between the second abutting area and the second valve disc 31. The smaller leakage gap generated by the abutment between the first abutting area and the second valve disc 31 makes the sealing of the first abutting area better, reduces the leakage of the fluid to the circumferential side when flowing through the first hole 22, thereby improving the parking effect of the trailer and ensuring the safety of the vehicle during intelligent driving. The larger leakage gap between the second abutting area and the second valve disc 31 makes it easier for the second valve disc 31 to rotate with the first valve disc 21, making it easier for the electronic parking actuator to switch states. During the rotation of the second valve disc 31 around the central axis of the second valve disc 31, the electronic parking actuator can include a first working state and a second working state. The first working state may include the first abutting area abutting against part of the second valve plate 31 on the periphery of the third groove 32, the fourth port 521, the first connecting unit 23, the third groove 32, the first hole 22, and the third port 133 being connected in sequence, at which time the fluid may flow through the fourth port 521, the first connecting unit 23, the third groove 32, the first hole 22, and the third port 133 in sequence, and then the fluid may 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, and since the leakage gap generated by the abutment between the first abutting area and the second valve plate 31 is small, the sealing performance of the fluid when flowing through the first hole 22 is better, and the fluid is not easy to leak, so that the parking effect of the trailer is better, meeting the safety requirements of vehicle intelligent driving. The second working state may include the first connecting unit 23 and / or the first hole 22 being spaced from the third groove 32.

[0026] In this embodiment, the second abutting area may include a third abutting area and a fourth abutting area. The third abutting area may be an annular area on the circumference of the first connecting unit 23 on the first valve sheet 21 away from the first housing 11 .

[0027] The leakage gap between the first abutting area and the second valve disc 31 may be smaller than the leakage gap between the fourth abutting area and the second valve disc 31. The leakage gap between the third abutting area and the second valve disc 31 may be smaller than the leakage gap between the fourth abutting area and the second valve disc 31.

[0028] The first working state may also include the first abutting area abutting against a part of the second valve disc 31 on the side of the third groove 32, and the third abutting area abutting against another part of the second valve disc 31 on the side of the third groove 32. In the first working state, the fluid needs to flow through the fourth port 521, the first connecting unit 23, the third groove 32, the first hole 22, and the third port 133 in sequence. Therefore, in order to ensure the parking brake effect of the trailer, the sealing between the third abutting area and the second valve disc 31 also needs to be ensured. Therefore, the leakage gap generated by the abutment between the third abutting area and the second valve disc 31 can be made smaller, so that the leakage between the fluid and the second valve disc 31 is less when the fluid passes through the third abutting area. At the same time, it can also prevent the fluid in the pressure space from entering the first connecting unit 23 through the gap between the third abutting area and the second valve disc 31, causing interference with the fluid flowing out of the fourth port 521, causing the speed of the fluid flowing out of the fourth port 521 to slow down or even cause backflow, thereby affecting the parking of the trailer, further improving the parking effect of the trailer, and ensuring the safety of the vehicle during intelligent driving. The larger leakage gap between the fourth abutting 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.

[0029] In this embodiment, the distribution component 01 may further include a distribution unit 12. The distribution unit 12 is detachably connected to the hollow cavity of the first shell 11. The distribution unit 12 may separate the hollow cavity of the first shell 11 into a first space and a second space. The first space may be arranged on a side of the second space away from the second shell 51. The space surrounded by the inner wall of the distribution unit 12 may be a third space. Figure 6 As shown, the third space may be in communication with the third port 133 , and the fluid in the third space may be discharged through the third port 133 .

[0030] like Figure 3As shown, the first interface unit 13 may also include a second port 132. The second port 132 is detachably connected to the first housing 11. The second port 132 may be connected to the second space. The second port 132 may be connected to the spring brake cylinder of the tractor, so that the fluid may 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 may be offset, and the parking release of the tractor may be realized through the fluid. The first adjustment component 02 may also include a third hole 24, a fourth hole 25, and a second connecting unit 26. The third hole 24, the fourth hole 25, and the second connecting unit 26 may respectively penetrate both sides of the thickness direction of the first valve plate 21. The first hole 22, the third hole 24, the first connecting unit 23, the fourth hole 25, and the second connecting unit 26 may be arranged in sequence along the set direction, and the set direction may be clockwise or counterclockwise. The first port 131 may be connected to the fourth hole 25. The third hole 24 may be connected to the first space. The third hole 24 may be connected to the second port 132. The second communication unit 26 can be communicated with the fourth port 521. In 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 be respectively communicated with the second space. The two second ports 132 may be respectively communicated with the spring brake cylinder of the tractor, so that the fluid may enter the spring brake cylinder of the tractor through the two second ports 132 respectively. When the fluid 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 achieved through the fluid. By setting the two second ports 132, the parking control response of the tractor can be faster and more efficient.

[0031] The second adjustment component 03 may further include a fourth groove 33. The fourth groove 33 may be recessed from one side of the second valve disc 31 close to the first valve disc 21 toward the other side.

[0032] 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 .

[0033] The leakage gap generated by the abutment between the fifth abutting area and the second valve disc 31 can be smaller than the leakage gap generated by the abutment between the sixth abutting area and the second valve disc 31. The smaller leakage gap generated by the abutment between the fifth abutting area and the second valve disc 31 makes the fifth abutting area more sealed, reduces the leakage of the fluid to the peripheral side when flowing through the third hole 24, and thus improves the parking release effect of the trailer and ensures the safety of the vehicle during intelligent driving. The larger leakage gap between the sixth abutting area and the second valve disc 31 makes it easier for the second valve disc 31 to rotate with the first valve disc 21, making it easier for the electronic parking actuator to switch states.

[0034] 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 connecting unit 26, and the second space are connected in sequence, the distribution unit 12 may move to the first port 131, the first space, and the second port 132 are connected in sequence, and the first port 131, the first space, the third hole 24, the fourth groove 33, the first connecting unit 23, and the fourth port 521 are connected in sequence.

[0035] The third working state may include the fluid sequentially passing through the first port 131, the fourth hole 25, the third groove 32, the second connecting unit 26, and the second space, allowing the distribution unit 12 to move to the first port 131 and communicate with the first space, and then the fluid sequentially passes through the first port 131, the first space, and the second port 132, and the second port 132 can be connected 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, and when the fluid moves from the second port 132 to the spring brake cylinder of the tractor, it can offset the braking force in the spring brake cylinder of the tractor, and the parking release of the tractor is realized by the fluid. And the fluid sequentially passes through the first port 131, the first space, the third hole 24, the fourth groove 33, the first connecting unit 23, and the fourth port 521, and the fourth port 521 can be connected with the spring brake cylinder of the trailer, and when the fluid moves from the fourth port 521 to the spring brake cylinder of the trailer, it can offset the braking force in the spring brake cylinder of the trailer, and the parking release of the trailer is realized by the fluid.

[0036] In this embodiment, the sixth abutting area may include a seventh abutting area and an eighth abutting area. The seventh abutting area may be an annular area on the circumferential side of the fourth hole 25 on the first valve plate 21 away from the first housing 11 .

[0037] The leakage gap generated by the abutment between the fifth abutting area and the second valve disc 31 is smaller than the leakage gap generated by the abutment between the seventh abutting area and the second valve disc 31. The smaller leakage gap generated by the abutment between the fifth abutting area and the second valve disc 31 makes the fifth abutting area more sealed, reduces the leakage of the fluid to the circumferential side when flowing through the third hole 24, and thus improves the parking release effect of the trailer, ensuring the safety of the vehicle during intelligent driving. Since the fluid only needs to flow out of the spring brake cylinder of the trailer when the trailer is parked, the leakage gap generated by the abutment between the fifth abutting area and the second valve disc 31 can be smaller than the leakage gap generated by the abutment between the seventh abutting area and the second valve disc 31. At the same time, the larger leakage gap between the seventh abutting area and the second valve disc 31 makes it easier for the second valve disc 31 to rotate with the first valve disc 21, making it easier for the electronic parking actuator to switch states.

[0038] In this embodiment, the eighth abutting 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 .

[0039] The leakage gap generated by the abutment between the seventh abutting area and the second valve disc 31 is smaller than the leakage gap generated by the abutment between the eighth abutting area and the second valve disc 31. Since the fifth hole 261 is connected to the upper cavity of the distribution unit 12, parking can be achieved as long as the fluid in the upper cavity of the distribution unit 12 is partially discharged through the fifth hole 261. Even if the fluid is discharged between the first valve disc 21 and the second valve disc 31, the distribution unit 12 can be moved to the first space and the third port 133 can be connected through the third space, so that the first space and the third port 133 can be connected through the third space to cancel parking. Therefore, the sealing of the eighth abutting area can be poor. At the same time, the larger leakage gap between the eighth abutting area and the second valve disc 31 makes it easier for the second valve disc 31 to rotate with the first valve disc 21, making it easier for the electronic parking actuator to switch states. In other embodiments, the second connecting 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 disc 21 close to the second valve disc 31 to the other side, the fifth hole 261 may be arranged in the second groove 262, the fifth hole 261 may penetrate both sides of the thickness direction of the first valve disc 21, and the second groove 262 may provide a channel for the flow of fluid in the fifth hole 261. By providing the fifth hole 261, the second groove 262 may have a certain structural strength. The eighth abutment area may be an annular area on the circumference of the second groove 262 on the first valve disc 21 away from the first housing 11. After the trailer is parked, as long as the leakage gap between the eighth abutment area and the second valve disc 31 is small and the second hole 231 is not entered by fluid, stability can be maintained.

[0040] In this embodiment, the second adjustment component 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 to the other side. The fifth groove 34, the fourth groove 33, and the third groove 32 may be sequentially spaced along a set direction.

[0041] The second working state may also include a fifth working state. The fifth working state may include that after the second space, the second connecting unit 26, the fifth groove 34, the first hole 22, the third space, and the third port 133 are connected in sequence, the fluid in the second space can be discharged from the third port 133, the distribution unit 12 moves to the second port 132, the first space, the third space, and the third port 133 are connected in sequence, and the fourth port 521, the first connecting unit 23, the fourth groove 33, the third hole 24, the first space, the third space, and the third port 133 can be connected in sequence, at this time, the fluid in the spring brake cylinder of the tractor can flow through the second port 132, the first port 133, the third port 133, and the fourth port 521. 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.

[0042] In this embodiment, the second working state may also include a sixth working state. The sixth working state may include the first hole 22, the first connecting unit 23, the third hole 24, the fourth hole 25, and the second connecting unit 26 being disconnected from each other. This prevents the fluid from entering 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, achieve voltage stabilization of the electronic parking actuator, and ensure the safety of the vehicle during intelligent driving. After the trailer is released from parking, 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 pressure stability is ensured. In other embodiments, the first connecting unit 23 may further include a second hole 231 and a first groove 232, the first groove 232 is recessed from the side of the first valve disc 21 close to the second valve disc 31 to the other side, the second hole 231 may be arranged in the first groove 232, the second hole 231 may penetrate both sides of the thickness direction of the first valve disc 21, and the first groove 232 may provide a channel for the flow of fluid in the second hole 231. By providing the first hole 22, the first groove 232 may have a certain structural strength. The third abutting area may be an annular area on the circumference of the first groove 232 on the first valve disc 21 away from the first housing 11. After the trailer is parked, as long as the leakage gap between the third abutting area and the second valve disc 31 is small and the second hole 231 is not entered by fluid, stability can be maintained.

[0043] In this embodiment, the second working state may also include a seventh working state. The seventh working state may include the fourth port 521, the first connecting 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 circulate with the fluid in the spring brake cylinder of the tractor through the fourth port 521, the first connecting unit 23, the fourth groove 33, the third hole 24, and the second port 132, so that the fluid pressure in the spring brake cylinder of the trailer and the spring brake cylinder of the tractor are the same, so that the trailer and the tractor can maintain the previous working state at the same time, realize the voltage stabilization of the electronic parking actuator, and ensure the safety of the vehicle during intelligent driving. In 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 portion 1211, a fixed portion 1212, and a movable portion 1213. The fixed portion 1212 is detachably connected to the end of the first housing 11 away from the second housing 51. The space surrounded by the inner circumferential wall of the fixed portion 1212 can be communicated with the third port 133. The elastic portion 1211 is detachably connected to the fixed portion 1212. The movable portion 1213 is detachably connected to one end of the elastic portion 1211 close to the second housing 51. The second distribution module 122 can be slidably connected to the first housing 11. The second distribution module 122 can move toward or away from the second housing 51. The second distribution module 122 can drive the movable portion 1213 to move toward or away from the second housing 51. The second distribution module 122 can include a piston 1221 and a circulation portion, and the flow portion 1222 can be arranged in the space surrounded by the first housing 11. One end of the flow portion 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 circumferential wall of the flow portion 1222 can be communicated with the fourth hole 25. The flow portion 1222 can be spaced apart from the first distribution module 121. The inner peripheral wall of the piston 1221 can be slidably connected to the outer peripheral wall of the flow-through portion 1222. The outer peripheral wall of the piston 1221 can be slidably connected to the inner peripheral wall of the first housing 11. The piston 1221 can move toward or away from the first distribution module 121. The piston 1221 is driven to move by the fluid in the upper chamber of the piston 1221, so that the piston 1221 can drive the movable portion 1213 to control the opening and closing of the fourth hole 25, thereby realizing the control of the parking of the trailer and the tractor, and meeting the intelligent driving requirements of the vehicle.

[0044] In this embodiment, the second working state may also include a seventh working state. The seventh working state may include the first port 131, the fourth hole 25, the third groove 32, the first connecting unit 23, and the fourth port 521 being connected in sequence. At this time, the fluid in the first port 131 may flow through the fourth hole 25, the third groove 32, the first connecting unit 23, and the fourth port 521 in sequence, and the fourth port 521 may 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 may be offset, and the parking release of the trailer may be achieved through the fluid. In other embodiments, such as Figure 4 As shown, the second interface unit 52 may also include a fifth port 522 and a sixth port 523. The fifth port 522 may be connected to the second housing 51, the sixth port 523 may be connected to the second housing 51, the fifth port 522 may be connected to the fourth port 521, and the fifth port 522 may be connected to a pressure sensor to monitor the flow through the spring brake cylinder of the trailer by changing the pressure value of the fluid. The sixth port 523 can be connected to the second space, and one end of the sixth port 523 away from the second space can be connected to a manual fluid switch. When the electric parking assembly control mechanism fails, the fluid in the second space can be discharged from the sixth port 523 to the external space of the electric parking assembly control mechanism by operating the manual fluid switch, so that the distribution unit 12 moves to the first port 131 and the connection with 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.

[0045] This embodiment discloses an electronic parking assembly control system for intelligent driving of a commercial vehicle. The electronic parking assembly control system may include any electronic parking actuator of the first aspect, such as Fig.11 As shown, the electronic parking assembly control system also includes: The vehicle body 06 , the first shell 11 and / or the second shell 51 are detachably connected to the vehicle body 06 .

[0046] The flow control component 07 may include a fluid source 71 and a trailer brake part 72. The fluid source 71 is detachably connected to the vehicle body 06. The fluid source 71 is in communication with 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, thereby realizing intelligent driving of the vehicle. The trailer brake part 72 is detachably connected to the vehicle body 06. The trailer brake part 72 may be in communication with the fourth port 521, so that the fluid can flow into the trailer brake part 72 through the fourth port 521, thereby realizing control of the trailer.

[0047] The master control component 08 can be electrically connected to the flow control component 07, so that the master control component 08 can control the flow control component 07. In other embodiments, the electric parking assembly control system can also include a drive component 04, which can be detachably connected to the second housing 51, and the drive component 04 can be drivingly connected to the second valve plate 31 to drive the second valve plate 31 to rotate around the central axis of the second valve plate 31.

[0048] 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 shell 11. The distribution unit 12 may separate the hollow cavity of the first shell 11 into a first space and a second space. The first space may be arranged on a side of the second space away from the second shell 51. The distribution unit 12 controls the flow of fluid between the first space and the second space, thereby realizing the control of the electric parking assembly control system by the distribution unit 12.

[0049] 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 is in communication with the second space, so that the fluid can enter the second port 132 through the second space, thereby realizing the control of the tractor.

[0050] The flow control assembly 07 further includes a tractor brake part 73. The tractor brake part 73 is detachably connected to the vehicle body 06. The tractor brake part 73 is in communication with the second port 132. The fluid can flow into the tractor brake part 73 through the second port 132, thereby achieving control of the tractor brake.

[0051] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail 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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