CN111981123A - Electro-hydraulic parking device and vehicle - Google Patents
Electro-hydraulic parking device and vehicle Download PDFInfo
- Publication number
- CN111981123A CN111981123A CN201910424739.8A CN201910424739A CN111981123A CN 111981123 A CN111981123 A CN 111981123A CN 201910424739 A CN201910424739 A CN 201910424739A CN 111981123 A CN111981123 A CN 111981123A
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- China
- Prior art keywords
- push rod
- parking
- hydraulic
- limiting
- pawl
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
Abstract
The invention relates to an electro-hydraulic parking device and a vehicle, wherein the electro-hydraulic parking device comprises a ratchet mechanism, a limiting part, a hydraulic push rod and a parking push rod; the ratchet mechanism comprises a ratchet wheel and a pawl which are mutually matched, when the ratchet wheel is matched with the pawl, the vehicle enters a parking gear, and when the ratchet wheel is separated from the pawl, the vehicle exits the parking gear; one end of the parking push rod is hinged with the hydraulic push rod, and the outer wall of the parking push rod is provided with a smoothly-transitional reducing structure; the limiting portion is connected with a shell of the gearbox, when the limiting portion is located at the first position, the axis of the parking push rod is collinear with the axis of the hydraulic push rod, the hydraulic push rod can drive the parking push rod to move back and forth between the limiting portion and the pawl under the driving of a hydraulic system, so that the ratchet wheel is matched with or separated from the pawl, and when the limiting portion is located at the second position, restoring force of the pawl can push the parking push rod to rotate in the direction away from the pawl. The vehicle can simply and conveniently exit the parking gear under the condition that a vehicle circuit system or a gearbox hydraulic system is in failure.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to an electro-hydraulic parking device and a vehicle.
Background
At present, due to the requirement of small and exquisite shape of a vehicle gear shift lever, various automobile manufacturers do a lot of research on the aspect of developing a non-manually driven parking system, the transmission integrated electro-hydraulic parking scheme occupies small volume of the whole automobile, the arrangement is simple, and the free design of the shape of a control lever is allowed due to the fact that the control lever is not limited in force and displacement, so that the electro-hydraulic parking is applied to medium and high-grade vehicles.
However, under the condition that a vehicle circuit system or a gearbox hydraulic system is in fault, the vehicle which enters the parking gear cannot achieve the parking gear function, and at the moment, the vehicle has the problem of difficulty in moving and is not beneficial to towing and maintaining. In order to solve the problem, in the prior art, a rocker arm lever mechanism is installed on a gearbox shell, and under the condition that a vehicle circuit system or a gearbox hydraulic system has a fault, a hydraulic push rod is driven to move through the rocker arm lever mechanism so as to remove the limitation of the hydraulic push rod on a pawl, and then the parking gear is withdrawn.
Therefore, under the condition that a vehicle circuit system or a gearbox hydraulic system is in fault, how to simply and conveniently enable the vehicle to exit from a parking gear is a technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to provide an electro-hydraulic parking device and a vehicle, which can simply and conveniently enable the vehicle to exit a parking gear under the condition of failure of a vehicle circuit system or a gearbox hydraulic system.
In order to solve the technical problem, the invention provides an electro-hydraulic parking device which comprises a ratchet mechanism, a limiting part, a hydraulic push rod and a parking push rod, wherein the hydraulic push rod is arranged on the ratchet mechanism; the ratchet mechanism comprises a ratchet wheel and a pawl which are matched with each other, the ratchet wheel is coaxially connected with a shaft system of the gearbox, a vehicle enters a parking gear when the ratchet wheel is matched with the pawl, and the vehicle exits the parking gear when the ratchet wheel is separated from the pawl; the hydraulic push rod is connected with a hydraulic system of the gearbox, one end of the parking push rod is hinged with the hydraulic push rod, and the outer wall of the parking push rod is provided with a smoothly-transitional reducing structure; the limiting portion is connected with a shell of the gearbox, when the limiting portion is located at a first position, the axis of the parking push rod is collinear with the axis of the hydraulic push rod, the hydraulic push rod can drive the parking push rod to reciprocate between the bottom of the limiting portion and the pawl under the driving of the hydraulic system, so that the ratchet wheel is matched with or separated from the pawl, and when the limiting portion is located at a second position, the restoring force of the pawl can push the parking push rod to rotate in the direction away from the pawl.
The one end and the ratchet cooperation of pawl, the other end and the casing rotatable coupling of gearbox, this ratchet still includes return spring, locate the casing of gearbox, a be used for providing the restoring force for the pawl, make it have the trend that breaks away from with the ratchet, when spacing position is in the primary importance, parking push rod and hydraulic push rod's axis collineation, at this moment, hydraulic push rod can drive parking push rod reciprocating motion between the bottom and the pawl of spacing portion under hydraulic system's drive, so that ratchet and pawl cooperation or break away from, parking push rod's top and the bottom butt of spacing portion, parking push rod's bottom and pawl butt, parking push rod's reciprocating motion can realize the cooperation of ratchet and pawl and break away from. Specifically, the outer wall of the parking push rod is provided with a reducing structure, when the part with the larger diameter is located between the limiting part and the pawl, the pawl is matched with the ratchet wheel, the vehicle enters the parking gear, and when the part, moving to the smaller diameter, of the parking push rod is located between the limiting part and the pawl, the restoring force provided by the return spring for the pawl enables the pawl to move towards the limiting part and disengage from the ratchet wheel, namely, the vehicle exits the parking gear.
When the limiting part moves upwards (herein, "up" refers to a side facing the housing, and "down" refers to a side facing the pawl) to the second position, since the parking push rod and the hydraulic push rod are hinged, the restoring force of the pawl can push the parking push rod to rotate in a direction away from the pawl, so that the pawl is disengaged from the ratchet wheel, and the vehicle exits from the parking position. The first position and the second position of the limiting part are position states of the limiting part relative to a shell of the gearbox, namely the relative position between the limiting part and the shell of the gearbox is variable, when a hydraulic system breaks down and a vehicle enters a parking gear, the parking gear cannot be withdrawn by pushing and pulling the parking push rod through the hydraulic push rod, at the moment, the limiting part can be manually shifted to the second position, and the operation is simple. The electro-hydraulic parking device provided by the embodiment is only based on the existing structure, the limiting part is improved, the position relation between the limiting part and the shell is variable, the parking gear can be withdrawn by changing the position of the limiting part, the situation that a vehicle entering the parking gear cannot realize the function of exiting the parking gear under the condition that a vehicle circuit system or a gearbox hydraulic system fails can be avoided, and the electro-hydraulic parking device is simple in structure, convenient to operate, small in occupied space and good in economical efficiency.
Optionally, the limiting part includes a limiting block, a guiding element and a limiting bolt, the limiting bolt is in threaded connection with the housing, the bottom of the limiting bolt is rotatably connected with the limiting block, and the guiding element can enable the limiting block to move along the axial direction of the limiting bolt.
Optionally, the guide member is a guide rod, an axis of the guide rod is parallel to an axis of the limiting bolt, one of the housing and the limiting block is fixed to the guide rod, the other one of the housing and the limiting block is provided with a first through hole matched with the guide rod, and the guide rod penetrates through the first through hole and can move in the first through hole.
Optionally, the lower part of the limiting bolt is provided with a limiting structure, the bottom end of the limiting bolt is provided with a fixing nut, the limiting block is further provided with a second through hole, the limiting bolt penetrates through the second through hole and can rotate in the second through hole, and the limiting structure and the fixing nut are respectively located at two ends of the second through hole.
Optionally, the lower part of spacing bolt is equipped with the first conical surface structure of from top to bottom convergent, first conical surface structure forms limit structure, the upper end inside wall of second through-hole is the second conical surface structure that from top to bottom expands gradually, second conical surface structure with first conical surface structure looks adaptation.
Optionally, the stopper includes connecting plate and butt piece, the butt piece locate the bottom of connecting plate and with the connecting plate is T type structure, spacing bolted connection the connecting plate with the casing, the butt piece is used for the butt the parking push rod.
Optionally, the bottom of the limiting block is provided with an arc-shaped surface matched with the parking push rod.
Optionally, the parking push rod comprises a push-pull rod, a sleeve and a compression spring, one end of the push-pull rod is hinged to the hydraulic push rod, the sleeve is sleeved on the outer side of the push-pull rod, the compression spring is located between the sleeve and the push-pull rod, and the reducing structure is arranged on the outer wall of the sleeve.
In addition, the invention also provides a vehicle which comprises the electro-hydraulic parking device.
The vehicle with the electro-hydraulic parking device has the technical effects similar to those of the electro-hydraulic parking device, and is not repeated herein for saving space.
Drawings
FIG. 1 is a schematic structural diagram of an electro-hydraulic parking device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the spacing portion in a first position;
FIG. 3 is a cross-sectional view of the spacing portion in a second position;
FIG. 4 is a schematic structural diagram of a stop block in FIG. 1;
fig. 5 is a schematic structural view of the limit bolt in fig. 1.
In the accompanying fig. 1-5, the reference numerals are illustrated as follows:
1-a shell;
21-ratchet wheel, 22-pawl, 23-return spring;
3-a limiting part, 31-a limiting block, 311-a first through hole, 312-a second through hole, 313-a second conical surface structure, 314-a connecting plate, 315-an abutting part, 32-a guide rod, 33-a limiting bolt, 331-a first conical surface structure, 332-a first thread section, 333-a second thread section and 34-a fixing nut;
4-hydraulic push rod;
5-parking push rod, 51-push rod, 52-sleeve, 53-compression spring.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-5, fig. 1 is a schematic structural diagram of an electro-hydraulic parking device according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of the spacing portion in a first position; FIG. 3 is a cross-sectional view of the spacing portion in a second position; FIG. 4 is a schematic structural diagram of a stop block in FIG. 1; fig. 5 is a schematic structural view of the limit bolt in fig. 1.
The embodiment of the invention provides an electro-hydraulic parking device and a vehicle, wherein the vehicle comprises the electro-hydraulic parking device, as shown in figure 1, the electro-hydraulic parking device comprises a ratchet mechanism, a limiting part 3, a hydraulic push rod 4 and a parking push rod 5; the ratchet mechanism comprises a ratchet wheel 21 and a pawl 22 which are mutually matched, the ratchet wheel 21 is coaxially connected with a shaft system of the gearbox, a vehicle enters a parking gear when the ratchet wheel 21 is matched with the pawl 22, and the vehicle exits the parking gear when the ratchet wheel 21 is separated from the pawl 22; hydraulic pressure push rod 4 is connected with the hydraulic system of gearbox, and parking push rod 5's one end is articulated with hydraulic pressure push rod 4, and parking push rod 5's outer wall is equipped with smooth transition's reducing structure, and spacing portion 3 is connected with the casing 1 of gearbox.
Specifically, one end of the pawl 22 is matched with the ratchet wheel 21, the other end of the pawl 22 is rotatably connected with the shell 1 of the gearbox, the ratchet mechanism further comprises a return spring 23 which is arranged on the shell 1 of the gearbox and used for providing restoring force for the pawl 22 to enable the pawl 22 to have a tendency of being disengaged from the ratchet wheel 21, when the limiting portion 3 is located at the first position, as shown in fig. 2, the axis of the parking push rod 5 is collinear with that of the hydraulic push rod 4, at the moment, the hydraulic push rod 4 can drive the parking push rod 5 to reciprocate between the bottom of the limiting portion 3 and the pawl 22 under the driving of a hydraulic system, so that the ratchet wheel 21 is matched with or disengaged from the pawl 22, namely, the top end of the parking push rod 5 is abutted against the bottom end of the limiting portion 3, the bottom end of the parking push rod 5 is abutted against the pawl 22. Specifically, the outer wall of the parking push rod 5 is provided with a diameter-changing structure, when the part with the larger diameter is located between the limiting part 3 and the pawl 22, the pawl 22 is matched with the ratchet wheel 21, the vehicle enters the parking gear, and when the part, moving to the smaller diameter, of the parking push rod 5 is located between the limiting part 3 and the pawl 22, the restoring force provided by the return spring 23 for the pawl 22 enables the pawl 22 to move towards the limiting part 3 and disengage from the ratchet wheel 21, namely, the vehicle exits the parking gear.
The diameter-variable structure may be a tapered surface or two cylindrical surface structures with smooth transition, and is not particularly limited herein, as long as the parking push rod 5 is driven by the hydraulic push rod 4 to reciprocate, due to the diameter-variable structure, when the part with the larger diameter is located between the limiting portion 3 and the pawl 22, the pawl 22 is matched with the ratchet 21, the vehicle enters the parking stop, and when the part with the smaller diameter is located between the limiting portion 3 and the pawl 22, the pawl 22 can move towards the limiting portion 31 under the action of the return spring 23 and disengage from the ratchet 21, so that the vehicle exits the parking stop.
When the stopper portion 3 moves upward (herein, "up" means toward the side of the housing 1, and "down" means toward the side of the pawl 22) to the second position, as shown in fig. 3, since the parking push rod 5 and the hydraulic push rod 4 are hinged, the restoring force of the pawl 22 can push the parking push rod 5 to rotate in a direction away from the pawl 22, so that the pawl 22 is disengaged from the ratchet 21 to withdraw the vehicle out of the parking range.
The first position and the second position of the limiting part 3 are position states of the limiting part relative to the shell 1 of the gearbox, namely the relative position between the limiting part 3 and the shell 1 of the gearbox is variable, when a hydraulic system breaks down and a vehicle enters a parking gear, the parking gear can not be withdrawn by pushing and pulling the parking push rod 5 through the hydraulic push rod 4, at the moment, the limiting part 3 can be manually shifted to the second position, and the operation is simple. The electro-hydraulic parking device provided by the embodiment is only based on the existing structure, the limiting part 3 is improved, the position relation between the limiting part and the shell 1 is variable, the parking gear can be withdrawn by changing the position of the limiting part 3, the situation that a vehicle circuit system or a gearbox hydraulic system breaks down can be avoided, the function that the vehicle entering the parking gear cannot exit the parking gear can not be realized, the structure is simple, the operation is convenient, the occupied space is small, and the economical efficiency is good.
In the above embodiment, the limiting portion 3 includes the limiting block 31, a guiding element and a limiting bolt 33, wherein the limiting bolt 33 is in threaded connection with the housing 1, the relative position between the limiting portion 3 and the housing 1 is changed by the rotation of the threads, the bottom of the limiting bolt 33 is rotatably connected with the limiting block 31, the guiding element is used for limiting the axial movement of the limiting block 31 along the limiting bolt 33, that is, the limiting bolt 33 drives the limiting block 31 to move along the axial direction thereof by the rotation between the limiting bolt 33 and the housing 1, and the limiting block 31 can be prevented from rotating along with the limiting bolt 33 by the arrangement of the guiding element.
As shown in fig. 2, when the limiting bolt 33 rotates and drives the limiting block 31 to move downward to make the axes of the parking push rod 5 and the hydraulic push rod 4 collinear, the limiting portion 3 is located at the first position, and when the limiting bolt 33 rotates and drives the limiting block 31 to move upward, the parking push rod 5 can rotate relative to the hydraulic push rod 4, the restoring force of the pawl 21 will push the parking push rod 5 to rotate until the pawl 21 disengages from the ratchet 22, as shown in fig. 3, at this time, the limiting portion 3 is located at the second position.
Of course, in this embodiment, the limiting portion 3 may also be only provided with the limiting bolt 33, the bottom of the limiting bolt 33 directly abuts against the pawl 22, and the limiting block 31 and the guiding member are provided to prevent the limiting bolt 33 from rotating along with the limiting block 31 in the rotating process, so that the position of the limiting bolt and the position of the parking push rod 5 are deviated, and then the bottom of the limiting block 31 is stably abutted against the parking push rod 5.
In the above embodiment, as shown in fig. 4, the guiding element is a guiding rod 32, an axis of the guiding rod 32 is parallel to an axis of the limiting bolt 33, one of the housing 1 and the limiting block 31 is fixed to the guiding rod 32, the other one of the housing 1 and the limiting block 31 is provided with a first through hole 311 adapted to the guiding rod 32, the guiding rod 32 passes through the first through hole 311 and can move in the first through hole 311, that is, the guiding rod 32 and the first through hole 311 are in clearance fit, in this embodiment, the limiting block 31 is provided with the first through hole 311, the guiding rod 32 is fixed to the housing 1, or the first through hole 311 is opened in the housing 1, at this time, the guiding rod 32 is fixed to the limiting block 31.
Of course, in this embodiment, the guiding element may also be a sliding groove, the sliding groove is parallel to the axis of the limiting bolt 33, one of the housing 1 and the limiting block 31 is provided with the sliding groove, and the other is provided with a sliding block adapted to the sliding groove. Compared with the arrangement of the sliding block and the sliding groove, the arrangement of the guide rod 32 and the first through hole 311 is simple in processing technology and convenient to disassemble and assemble.
In the above embodiment, the lower portion of the limiting bolt 33 is provided with a limiting structure, the bottom end of the limiting bolt is provided with a fixing nut 34, the limiting block 31 is further provided with a second through hole 312, the rod portion passes through the second through hole 312 and can rotate in the second through hole 312, and the limiting structure and the fixing nut 34 are respectively located at two ends of the second through hole 312. As shown in fig. 1-3, in this embodiment, the upper portion of the limit bolt 33 is in threaded connection with the inner wall of the housing 1, the lower portion of the limit bolt passes through the second through hole 312 of the limit block 31, and the limit structure and the fixing nut 34 are respectively located at two ends of the second through hole 312, so as to achieve rotatable connection between the limit bolt 33 and the limit block 31.
Or, in this embodiment, a bearing may be further provided, an outer ring of the bearing is fixed to the stopper 31, and an inner ring of the bearing is fixed to the bottom of the stopper bolt 33, so that the rotatable connection between the bottom of the stopper bolt 33 and the stopper 31 can be realized. The connection between the limiting structure and the fixing nut 34 can simplify the installation process, and the limiting bolt 33 is threaded into the fixing nut 34 after passing through the second through hole 312.
That is, as shown in fig. 5, the limit nut in this embodiment includes two threaded sections, a first threaded section 332 at the upper portion is connected to the housing 1, and a second threaded section 333 at the lower portion is connected to the fixing nut 34.
In the above embodiment, the lower portion of the limit bolt 33 is provided with a first conical surface structure 331 tapering from top to bottom, the first conical surface structure 331 forms the limit structure, the inner side wall of the upper end of the second through hole 312 is a second conical surface structure 313 tapering from top to bottom, and the second conical surface structure 313 is adapted to the first conical surface structure 331. Alternatively, in this embodiment, the limiting structure may also be configured as a nut or a protrusion or a disc-shaped structure extending outward in the radial direction of the limiting bolt 33, and the like, which is not limited herein.
In addition, the limiting structure is set to be a conical surface structure, and meanwhile, the end face of the second through hole 312 is also provided with a corresponding conical surface structure, so that the space requirement of the limiting structure can be reduced, and the space between the shell 1 and the limiting block 31 is prevented from being occupied.
In the above embodiment, specific structure of the stopper 31 is not limited, in this embodiment, as shown in fig. 4, the stopper 31 includes a connecting plate 314 and an abutting piece 315, where the abutting piece 315 is disposed at a bottom of the connecting plate 314, the two form an approximately T-shaped structure, the connecting plate 314 is used for connecting with the housing 1 through the stopper bolt 33, the first through hole 311 and the second through hole 312 are both opened in the connecting plate 314, and the abutting piece 315 is used for abutting with the parking push rod 5. This arrangement can reduce the length of the first through hole 311 and the second through hole 312, reduce the overall weight of the stopper 3, and prevent the fixing nut 34 from interfering with the parking push rod 5.
In the above embodiment, the bottom of stopper 31 is equipped with the arcwall face with parking push rod 5 looks adaptation, and the arcwall face and the laminating of parking push rod 5 of stopper 31 bottom can avoid in the use, because parking push rod 5's reciprocating motion takes place parking push rod 5 and breaks away from the condition of stopper 31.
In the above embodiment, as shown in fig. 2 and 3, the parking push rod 5 includes a push-pull rod 51, a sleeve 52 and a compression spring 53, one end of the push-pull rod 51 is hinged to the hydraulic push rod 4, the sleeve 52 is sleeved outside the push-pull rod 51, the compression spring 53 is located between the sleeve 52 and the push-pull rod 51, and the diameter-variable structure is arranged on the outer wall of the sleeve 52.
Of course, in this embodiment, the parking push rod 5 may also be provided with only the push-pull rod 51, the outer wall of the push-pull rod 51 may be provided with a smoothly transitive reducing structure, and the structure provided with the sleeve 52 and the compression spring 53 may increase damping to provide a buffering effect for entering and exiting the parking block.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (9)
1. The electro-hydraulic parking device is characterized by comprising a ratchet mechanism, a limiting part (3), a hydraulic push rod (4) and a parking push rod (5);
the ratchet mechanism comprises a ratchet wheel (21) and a pawl (22) which are matched with each other, the ratchet wheel (21) is coaxially connected with a shaft system of the gearbox, a vehicle enters a parking gear when the ratchet wheel (21) is matched with the pawl (22), and the vehicle exits the parking gear when the ratchet wheel (21) is separated from the pawl (22);
the hydraulic push rod (4) is connected with a hydraulic system of the gearbox, one end of the parking push rod (5) is hinged with the hydraulic push rod (4), and the outer wall of the parking push rod (5) is provided with a smoothly-transitional reducing structure;
Spacing portion (3) with casing (1) of gearbox are connected, when spacing portion (3) are in the primary importance, the axis of parking push rod (5) with the axis collineation of hydraulic push rod (4), hydraulic push rod (4) can drive under hydraulic system's the drive parking push rod (5) reciprocating motion in the bottom of spacing portion (3) with between pawl (22), so that ratchet (21) with pawl (22) cooperation or break away from, when spacing portion (3) are in the secondary importance, the restoring force of pawl (22) can promote parking push rod (5) are to keeping away from the direction rotation of pawl (22).
2. The electro-hydraulic parking device according to claim 1, wherein the limiting part (3) comprises a limiting block (31), a guide member and a limiting bolt (33), the limiting bolt (33) is in threaded connection with the housing (1), the bottom of the limiting bolt is rotatably connected with the limiting block (31), and the guide member is used for limiting the axial movement of the limiting block (31) along the limiting bolt (33).
3. The electro-hydraulic parking device according to claim 2, characterized in that the guide member is a guide rod (32), the axis of the guide rod (32) is parallel to the axis of the limit bolt (33), one of the housing (1) and the limit block (31) is fixed with the guide rod (32), the other one is provided with a first through hole (311) matched with the guide rod (32), and the guide rod (32) passes through the first through hole (311) and can move in the first through hole (311).
4. The electro-hydraulic parking device according to claim 2, characterized in that a limiting structure is arranged at the lower part of the limiting bolt (33), a fixing nut (34) is arranged at the bottom end of the limiting bolt, a second through hole (312) is further formed in the limiting block (31), the limiting bolt (33) penetrates through the second through hole (312) and can rotate in the second through hole (312), and the limiting structure and the fixing nut (34) are respectively located at two ends of the second through hole (312).
5. The electro-hydraulic parking device according to claim 4, characterized in that a first conical surface structure (331) which is tapered from top to bottom is arranged at the lower portion of the limiting bolt (33), the first conical surface structure (331) forms the limiting structure, the inner side wall of the upper end of the second through hole (312) is a second conical surface structure (313) which is gradually enlarged from top to bottom, and the second conical surface structure (313) is matched with the first conical surface structure (331).
6. The electro-hydraulic parking device according to any one of claims 1-5, wherein the limiting block (31) comprises a connecting plate (314) and an abutting piece (315), the abutting piece (315) is arranged at the bottom of the connecting plate (314) and is in a T-shaped structure with the connecting plate (314), the limiting bolt (33) is used for connecting the connecting plate (314) and the shell (1), and the abutting piece (315) is used for abutting against the parking push rod (5).
7. The electro-hydraulic parking device according to any one of claims 1-5, characterized in that the bottom of the limiting block (31) is provided with an arc-shaped surface adapted to the parking push rod (5).
8. The electro-hydraulic parking device according to any one of claims 1 to 5, wherein the parking push rod (5) comprises a push-pull rod (51), a sleeve (52) and a compression spring (53), one end of the push-pull rod (51) is hinged to the hydraulic push rod (4), the sleeve (52) is sleeved on the outer side of the push-pull rod (51), the compression spring (53) is located between the sleeve (52) and the push-pull rod (51), and the reducing structure is arranged on the outer wall of the sleeve (52).
9. A vehicle, characterized by comprising an electro-hydraulic parking device according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424739.8A CN111981123B (en) | 2019-05-21 | 2019-05-21 | Electro-hydraulic parking device and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424739.8A CN111981123B (en) | 2019-05-21 | 2019-05-21 | Electro-hydraulic parking device and vehicle |
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| CN111981123A true CN111981123A (en) | 2020-11-24 |
| CN111981123B CN111981123B (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910424739.8A Active CN111981123B (en) | 2019-05-21 | 2019-05-21 | Electro-hydraulic parking device and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506753A (en) * | 2022-11-24 | 2022-12-23 | 胜利新大新材料股份有限公司 | Synchronous displacement ultra-long stroke pumping unit |
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| DE102007026412A1 (en) * | 2007-06-06 | 2008-12-11 | Zf Friedrichshafen Ag | Parking lock mechanism for automatic transmission motor vehicle, has locking element arranged on connecting rod for locking disc |
| JP2014134243A (en) * | 2013-01-10 | 2014-07-24 | Honda Motor Co Ltd | Parking lock device of transmission |
| CN108087545A (en) * | 2016-11-22 | 2018-05-29 | 上海汽车集团股份有限公司 | Parking and braking mechanism, parking braking system, automatic gear-box and automobile |
| CN208057924U (en) * | 2018-03-29 | 2018-11-06 | 科力远混合动力技术有限公司 | Automatic gear-box hydraulic-driven halting mechanism |
| CN208535144U (en) * | 2018-06-15 | 2019-02-22 | 中国第一汽车股份有限公司 | A kind of electronic parking mechanism of longitudinal automatic transmission |
| CN208831697U (en) * | 2018-08-15 | 2019-05-07 | 科力远混合动力技术有限公司 | Hydraulic-driven halting mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506753A (en) * | 2022-11-24 | 2022-12-23 | 胜利新大新材料股份有限公司 | Synchronous displacement ultra-long stroke pumping unit |
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| CN111981123B (en) | 2022-02-01 |
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