CN111207165A - Brake, gearbox and vehicle - Google Patents

Brake, gearbox and vehicle Download PDF

Info

Publication number
CN111207165A
CN111207165A CN202010197916.6A CN202010197916A CN111207165A CN 111207165 A CN111207165 A CN 111207165A CN 202010197916 A CN202010197916 A CN 202010197916A CN 111207165 A CN111207165 A CN 111207165A
Authority
CN
China
Prior art keywords
cam
brake
ring
pawl
friction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010197916.6A
Other languages
Chinese (zh)
Inventor
黄楚然
朱洪兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Century Xingyuan Technology Development Co Ltd
Original Assignee
Beijing Century Xingyuan Technology Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Century Xingyuan Technology Development Co Ltd filed Critical Beijing Century Xingyuan Technology Development Co Ltd
Priority to CN202010197916.6A priority Critical patent/CN111207165A/en
Publication of CN111207165A publication Critical patent/CN111207165A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • F16D63/006—Positive locking brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • F16D2125/28—Cams; Levers with cams

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention provides a brake, a gearbox and a vehicle. The brake includes a brake hub, a cam ring, a ratchet ring, and at least one pawl; the ratchet ring is rotatably connected with the brake hub, at least one pawl groove is formed in the ratchet ring, and each pawl corresponds to at least one pawl groove; the cam ring is rotatably arranged in the brake hub, a first cam group is arranged on the cam ring and comprises at least one first cam, each first cam corresponds to at least one pawl, and when the cam ring rotates, the first cams can drive the corresponding pawls to be clamped into or out of the corresponding pawl grooves. The brake can effectively reduce the power and driving force requirements of the driving element, and the driving element of the brake does not need to provide power after braking by virtue of the self-locking surface of the cam, so that the energy loss of a system can be reduced, and the efficiency of the system can be effectively improved.

Description

Brake, gearbox and vehicle
Technical Field
The invention belongs to the technical field of transmissions, and particularly relates to a brake, a gearbox and a vehicle.
Background
The brake is a common mechanism for the gearbox of a traditional internal combustion locomotive or the electromechanical coupling system of a hybrid electric vehicle, and requires high efficiency, low cost, small size, light weight and the like of parts. The common brake is realized by a wet-type multi-plate clutch, and meanwhile, the brake function can be realized only by matching a hydraulic system adapted to the common brake, so that the problems of high cost, low efficiency and large size exist. Particularly, for a hybrid electromechanical coupling system, the system has multiple power sources to output simultaneously, and has the requirement of high-torque braking, and the conventional wet-type multi-plate brake is difficult to meet the requirement of braking torque. The electromagnetic clutch meeting the requirement of braking torque has the problems of high cost, large size, heavy weight and the like.
Disclosure of Invention
The present invention is directed to at least one of the problems of the prior art, and provides a brake, a transmission and a vehicle.
One aspect of the present invention provides a brake including a brake hub, a cam ring, a ratchet ring, and at least one pawl; wherein the content of the first and second substances,
the ratchet ring is rotatably connected with the brake hub, at least one pawl groove is formed in the ratchet ring, and each pawl corresponds to at least one pawl groove;
the cam ring is rotatably arranged in the brake hub, a first cam group is arranged on the cam ring and comprises at least one first cam, each first cam corresponds to at least one pawl, and when the cam ring rotates, the first cams can drive the corresponding pawls to be clamped into or out of the corresponding pawl grooves.
In some optional embodiments, the brake further comprises at least one friction plate, and the ratchet ring is further provided with a friction surface, and the friction surface corresponds to the friction plate; wherein the content of the first and second substances,
the friction plate can abut against the friction surface before the pawls are clamped into the pawl grooves.
In some optional embodiments, a second cam group is further disposed on the cam ring, and the second cam group includes at least one second cam, and each second cam corresponds to at least one friction plate, so that when the cam ring rotates, the second cam drives the friction plate to abut against the friction surface.
In some alternative embodiments, the first cam group and the second cam group are both disposed on an outer peripheral wall of the cam ring, and the first cam group and the second cam group are disposed in order in an axial direction of the cam ring;
the pawl groove and the friction surface are both arranged on the inner peripheral wall of the ratchet ring, and the pawl groove and the friction surface are sequentially arranged along the axial direction of the ratchet ring.
In some alternative embodiments, the first and second cam sets are each disposed on an end surface of the cam ring facing the ratchet ring, and the first and second cam sets are disposed in series in a radial direction of the cam ring;
the pawl groove and the friction surface are both arranged on the end face, facing the cam ring, of the ratchet ring, and the pawl groove and the friction surface are sequentially arranged along the radial direction of the ratchet ring.
In some optional embodiments, the brake further comprises an end face bearing disposed between the cam ring and the brake hub such that the cam rotates about the brake hub.
In some alternative embodiments, first cams of the first cam set are interleaved with second cams of the second cam set.
In some optional embodiments, the brake further comprises at least one rotating shaft, the rotating shaft is rotatably arranged in the brake hub, the axis of the rotating shaft is parallel to or perpendicular to the axis of the brake hub, and each rotating shaft corresponds to at least one pawl and/or at least one friction plate; wherein the content of the first and second substances,
the friction plate and the pawl are rotatably sleeved on the corresponding rotating shaft.
In some alternative embodiments, each of the rotating shafts is sleeved with one of the friction plates and one of the pawls in sequence.
In some optional embodiments, the brake further comprises a drive element coupled to the cam ring to drive rotation of the cam ring.
In another aspect of the present invention, there is provided a transmission comprising a brake, said brake being as described above.
In another aspect of the invention, a vehicle is provided, said vehicle comprising a brake as described above or a gearbox as described above.
The brake, the gearbox and the vehicle of the invention adopt the first cam group arranged on the cam ring to drive the pawls, can effectively reduce the power and the driving force requirements of the driving element, and in addition, because the cam has the self-locking surface, the driving element of the brake does not need to provide power after braking, can reduce the energy loss of the system and effectively improve the system efficiency.
Drawings
Fig. 1 is an exploded view of a brake according to embodiment 1 of the present invention;
fig. 2 is a partial assembly view of the brake of embodiment 1 of the present invention;
fig. 3 is a partial assembly view of the brake of embodiment 1 of the present invention;
fig. 4 to 6 are schematic diagrams of the brake operation process of the brake of the embodiment 1 of the invention;
fig. 7 is an exploded view of a brake of embodiment 2 of the invention;
FIG. 8 is a schematic structural view of a ratchet ring in the brake according to embodiment 2 of the present invention;
fig. 9 is a schematic structural view of a cam ring in the brake according to embodiment 2 of the invention;
fig. 10 is a schematic structural view of a brake hub in the brake according to embodiment 2 of the invention;
fig. 11 to 13 are schematic diagrams of brake operation processes of the brake according to embodiment 2 of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1 to 6, a brake 100 includes a brake hub 110, a cam ring 120, a ratchet ring 130, and a plurality of pawls 140. Brake hub 110 may be used to secure to the transmission housing, cam ring 120 may be used to connect to a driving element, and ratchet ring 130 may be used to connect to a braked element. As shown in fig. 2, the ratchet ring 130 is rotatably fitted over the brake hub 110, and a plurality of pawl grooves 131 are formed in an inner circumferential wall of the ratchet ring 130, and each pawl 140 corresponds to at least one pawl groove 131. As shown in fig. 2 and 3, the cam ring 120 is rotatably disposed in the brake hub 110, the cam ring 120 preferably being disposed coaxially with the brake hub 110, the cam ring 120 also preferably being mounted coaxially with the ratchet ring 130. The cam ring 120 can rotate around the axis of the brake hub 110 under the driving of the driving element, a first cam group 121 is arranged on the outer peripheral wall of the cam ring 120, the first cam group 121 comprises a plurality of first cams, and each first cam corresponds to one pawl 140, so that when the cam ring 120 rotates, the first cams can drive the corresponding pawls 140 to be clamped into or clamped out of the corresponding pawl grooves 131.
The braking operation and the releasing operation of the brake of the present embodiment are explained in detail below.
The braking working process comprises the following steps:
before braking is performed using the brake 100 of the present embodiment, as shown in fig. 4, at this time, the first cam in the first cam group 121 on the cam ring 120 pushes the corresponding pawl 140 toward the cam ring 120 side, and the ratchet ring 130 can freely rotate, so that the braked member can also freely rotate.
After the braking is started and the driving torque of the ratchet ring 130 is reduced or removed, the driving element drives the cam ring 120 to rotate around the axis of the brake hub 110, at this time, the first cam in the first cam group 121 on the cam ring 120 pushes the corresponding pawl 140 to be clamped into the corresponding pawl groove 131 of the ratchet ring 130, so that the pawl 140 can be locked in a ratchet engagement state, and the braking is completed, as shown in fig. 6.
And (3) releasing the braking working process:
before the brake is released, as shown in fig. 6, the pawls 140 are engaged in the pawl grooves 131 of the ratchet ring 130, and the pawls 140 are held by the first cam of the first cam group 121 on the cam ring 120, so that the ratchet ring 130 cannot rotate freely.
After the braking is released, the driving element drives the cam ring 120 to rotate, so that the first cam in the first cam group 121 on the cam ring 120 releases the locking holding of the pawls 140, and the ratchet ring 130 resumes free rotation as shown in fig. 4.
The brake of the embodiment adopts the first cam group arranged on the cam ring to drive the pawls, so that the power and the driving force requirements of the driving element can be effectively reduced.
It should be noted that, the number of the pawls is not limited, for example, 1, 2, 3, and 3 or more pawls may be provided at intervals along the inner circumferential wall of the ratchet ring, and may be determined according to actual needs, and the present embodiment is not particularly limited thereto. When a plurality of pawls are provided, the plurality of pawls may be equally spaced along the inner peripheral wall of the ratchet ring or may be arranged in some other arrangement, which is not limited in this embodiment.
It should be further noted that, besides one-to-one correspondence between the pawl grooves and the pawls, other correspondence manners may also be adopted, for example, one pawl groove corresponds to 2, 3, or more pawls, or one pawl corresponds to 2, 3, or more pawl grooves, which is not limited in this embodiment.
It should be noted that, the first cams may correspond to the pawls one by one, and other corresponding manners may also be adopted, for example, one first cam may correspond to 2, 3, and more than one pawls, or one pawl may correspond to 2, 3, and more than one first cam, and in addition, when the first cam group includes a plurality of first cams, the plurality of first cams may be disposed at equal intervals along the outer circumferential wall of the cam ring or in some other disposing manners, which is not limited in this embodiment.
Illustratively, as shown in fig. 1 and 2, the brake 100 further includes a plurality of friction plates 150, and friction surfaces 132 are further disposed on the inner circumferential wall of the ratchet ring 130, and the friction surfaces 132 correspond to the friction plates 150. A second cam group 122 is further provided on the outer peripheral wall of the cam ring 120, the second cam group 122 including a plurality of second cams, one for each friction plate 150, so that when the cam ring 120 rotates, the second cams drive the friction plates 150 to abut against the friction surfaces 132 before the pawls 140 are caught in the pawl grooves 131.
The braking operation and the releasing operation of the brake of the present embodiment are explained in detail below.
The braking working process comprises the following steps:
before braking is performed using the brake 100 of the present embodiment, as shown in fig. 4, at this time, the first cam in the first cam group 121 on the cam ring 120 pushes the corresponding pawl 140 toward the cam ring 120 side, the second cam in the second cam group 122 pushes the corresponding friction plate 150 toward the cam ring 120 side, and the ratchet ring 130 can freely rotate, so that the braked member can also freely rotate.
After braking begins and the driving torque of the ratchet ring 130 is reduced or removed, the driving element drives the cam ring 120 to rotate around the axis of the brake hub 110, at this time, the second cam in the second cam set 122 on the cam ring 120 first pushes the corresponding friction plate 150 to rotate and turns the friction plate 150 to the direction of the ratchet ring 130, as shown in fig. 5, the friction surface 132 on the ratchet ring 130 generates friction with the friction plate 150, and the ratchet ring 130 starts to decelerate.
After the rotation speed of the ratchet ring 130 and the brake hub 110 are almost synchronized to zero, the cam ring 120 rotates to the other side of the brake hub 110, and at this time, the first cam in the first cam group 121 on the cam ring 120 pushes the corresponding pawl 140 to be clamped into the corresponding pawl groove 131 of the ratchet ring 130, so that the pawl 140 can be locked in a ratchet engaging state, and braking is completed, as shown in fig. 6.
And (3) releasing the braking working process:
before the brake is released, as shown in fig. 6, the pawls 140 are engaged in the pawl grooves 131 of the ratchet ring 130, and the pawls 140 are held by the first cam in the first cam group 121 on the cam ring 120 and the friction plate 150 is held by the second cam in the second cam group 122, so that the ratchet ring 130 cannot rotate freely.
After the braking is released, the driving element drives the cam ring 120 to rotate, so that the first cam in the first cam group 121 on the cam ring 120 releases the lock holding of the pawls 140 and the second cam in the second cam group 122 releases the lock holding of the friction plate 150, and as shown in fig. 4, the ratchet ring 130 returns to freely rotate.
The brake of this embodiment adopts cam drive friction disc and pawl, can effectual reduction drive element's power and drive power requirement, adopts two sections staggered cams to drive friction disc and pawl respectively in proper order, adopts the friction disc synchronous earlier, adopts the pawl locking afterwards, and the friction disc only is used for synchronous rotational speed, and the big moment of torsion of ratchet dish end is braked through the pawl, can effectively reduce the requirement to the friction disc, because the cam has the face of auto-lock, the drive element of this system need not provide power again after the braking, can reduce system energy loss, effectively improve system efficiency.
It should be noted that, the number of the friction plates is not limited, for example, 1, 2, 3, and more than 3 friction plates may be provided, which may be determined according to actual needs, and this embodiment is not particularly limited thereto.
It should be further noted that the second cams may correspond to the friction plates one by one, and other corresponding manners may also be adopted, for example, one second cam may correspond to 2, 3, and more than one friction plates, or one friction plate may also correspond to 2, 3, and more than one second cam, and in addition, when the second cam group includes a plurality of second cams, the plurality of second cams may be disposed at equal intervals along the outer peripheral wall of the cam ring or in some other arrangement manners, which is not limited in this embodiment.
It should be noted that, the above-mentioned may adopt some other modes besides that the second cam driving friction plate in the second cam group provided on the cam ring is abutted with the friction surface on the ratchet ring, and this embodiment is not limited to this.
In addition, the friction plate can be a shoe type structure on a drum brake, and the driving element can be a hydraulic piston cylinder, and can also be other power sources for rotating the cam ring, such as an electric motor and the like.
Illustratively, as shown in fig. 1, the first cam group 121 and the second cam group 122 are arranged in order in the axial direction of the cam ring 120. The pawl groove 131 and the friction surface 132 are sequentially disposed in the axial direction of the ratchet ring 130. The first cams in the first cam set 121 are staggered with respect to the second cams in the second cam set 122. The staggered arrangement means that the first cam in the first cam group 121 and the second cam in the second cam group 122 are staggered, so that the second cam group 122 and the first cam group 121 can drive the corresponding friction plate 150 and the pawl 140 in sequence.
Illustratively, as shown in fig. 1 and 2, the brake 100 further includes a plurality of rotating shafts 160, a plurality of mounting holes 111 are provided on an end surface of the brake hub 110, and the plurality of rotating shafts 160 are inserted into the corresponding mounting holes 111. The axis of the rotating shaft 160 is parallel to the axis of the brake hub 110. Each rotating shaft 160 of a part of the rotating shafts 160 corresponds to one pawl 140 and one friction plate 150, each rotating shaft 160 of the other part of the rotating shafts 160 corresponds to one pawl 140 independently, and the friction plates 150 and the pawls 140 are rotatably sleeved on the corresponding rotating shafts 160.
It should be noted that, other corresponding manners may also be adopted between the rotating shaft and the pawls and the friction plates, for example, only one pawl or one friction plate may be sleeved on each rotating shaft, or a plurality of pawls or a plurality of friction plates are sleeved on each rotating shaft, and the present embodiment is not limited thereto.
Example 2:
as shown in fig. 7 to 13, a brake 100 includes a brake hub 110, a cam ring 120, a ratchet ring 130, and a plurality of pawls 140. The brake hub 110 may be adapted to be fixedly coupled to a transmission housing, the cam ring 120 may be coupled to the driving element 170, and as shown in fig. 9, the cam ring 120 may be provided with a connection portion 123, and may be coupled to the driving element 170 through the connection portion 123. Ratchet ring 130 may be used in conjunction with a braked member. As shown in fig. 7 and 8, ratchet ring 130 is rotatably installed in brake hub 110, and a plurality of pawl grooves 131 are provided on an end surface of ratchet ring 130 facing cam ring 120, with each pawl 140 corresponding to at least one pawl groove 131. As shown in fig. 7 and 9, the cam ring 120 and the end face bearing are installed in the brake hub 110, the end face bearing is located between the cam ring 120 and the brake hub 110, and the cam ring 120 is rotatable around the brake hub 110 axis. The cam ring 120 is preferably disposed coaxially with the brake hub 110, and the cam ring 120 is also preferably mounted coaxially with the ratchet ring 130. A first cam set 121 is disposed on an end surface of the cam ring 120 facing the ratchet ring 130, and the first cam set 121 includes a plurality of first cams, each corresponding to one of the pawls 140, so that when the cam ring 120 rotates, the first cams can drive the corresponding pawls 140 to be caught in or caught out of the corresponding pawl grooves 131.
The braking operation and the releasing operation of the brake of the present embodiment are explained in detail below.
The braking working process comprises the following steps:
before braking is performed using the brake 100 of the present embodiment, as shown in fig. 11, at this time, the cam ring 120 is located on the brake hub 110 side, the first cam in the first cam group 121 on the cam ring 120 pushes the corresponding pawl 140 toward the cam ring 120 side, and the ratchet ring 130 is free to rotate, so that the braked member is also free to rotate.
After the braking starts and the driving torque of the ratchet ring 130 is reduced or removed, the cam ring 120 rotates to the other side of the brake hub 110, the driving element 170 drives the cam ring 120 to rotate around the axis of the brake hub 110, at this time, the first cam in the first cam group 121 on the cam ring 120 pushes the corresponding pawl 140 to be clamped into the corresponding pawl groove 131 of the ratchet ring 130, so that the pawl 140 can be locked in a ratchet engaging state, and the braking is completed, as shown in fig. 13.
And (3) releasing the braking working process:
before the brake is released, as shown in fig. 13, the pawls 140 are engaged in the pawl grooves 131 of the ratchet ring 130, and the pawls 140 are held by the first cam of the first cam group 121 on the cam ring 120, so that the ratchet ring 130 cannot rotate freely.
After the braking is released, the driving element 170 drives the cam ring 120 to rotate, so that the first cam in the first cam group 121 on the cam ring 120 releases the locking holding of the pawls 140, and the ratchet ring 130 resumes free rotation, as shown in fig. 11.
The brake of the embodiment adopts the first cam group arranged on the cam ring to drive the pawls, so that the power and the driving force requirements of the driving element can be effectively reduced.
It should be noted that, for other descriptions of the pawl, the first cam group, and the like, reference may be made to the description of embodiment 1, and details are not described herein.
Illustratively, as shown in fig. 7, the brake 100 further includes a plurality of friction plates 150, and a friction surface 132 is provided on an end surface of the ratchet ring 130 facing the cam ring 120, the friction surface 132 corresponding to the friction plates 150. A second cam set 122 is also provided on the end face of the cam ring 120 facing the ratchet ring 130, the second cam set 122 comprising a plurality of second cams, one for each friction plate 150, such that as the cam ring 120 rotates, the second cams drive the friction plates 150 into abutment with the friction surfaces 132 before the pawls 140 snap into the pawl grooves 131.
The braking operation and the releasing operation of the brake of the present embodiment are explained in detail below.
The braking working process comprises the following steps:
before braking is performed by the brake 100 of the present embodiment, as shown in fig. 11, at this time, the cam ring 120 is located on the brake hub 110 side, the first cam in the first cam group 121 on the cam ring 120 pushes the corresponding pawl 140 to the cam ring 120 side, the second cam in the second cam group 122 pushes the corresponding friction plate 150 to the cam ring 120 side, and the ratchet ring 130 can freely rotate, so that the braked member can also freely rotate.
After braking begins and the driving torque of the ratchet ring 130 is reduced or removed, the driving element drives the cam ring 120 to rotate around the axis of the brake hub 110, at this time, the second cam in the second cam set 122 on the cam ring 120 first pushes the corresponding friction plate 150 to rotate and turns the friction plate 150 to the direction of the ratchet ring 130, as shown in fig. 12, the friction surface 132 on the ratchet ring 130 generates friction with the friction plate 150, and the ratchet ring 130 starts to decelerate.
After the rotation speed of the ratchet ring 130 and the brake hub 110 are almost synchronized to zero, the cam ring 120 rotates to the other side of the brake hub 110, and at this time, the first cam in the first cam group 121 on the cam ring 120 pushes the corresponding pawl 140 to be clamped into the corresponding pawl groove 131 of the ratchet ring 130, so that the pawl 140 can be locked in a ratchet engaging state, and braking is completed, as shown in fig. 13.
And (3) releasing the braking working process:
before the brake is released, as shown in fig. 13, the pawls 140 are engaged in the pawl grooves 131 of the ratchet ring 130, and the pawls 140 are held by the first cam in the first cam group 121 on the cam ring 120 and the friction plate 150 is held by the second cam in the second cam group 122, so that the ratchet ring 130 cannot rotate freely.
After the braking is released, the driving element drives the cam ring 120 to rotate, so that the first cam in the first cam group 121 on the cam ring 120 releases the lock holding of the pawls 140 and the second cam in the second cam group 122 releases the lock holding of the friction plate 150, and as shown in fig. 11, the ratchet ring 130 returns to freely rotate.
The brake of this embodiment adopts cam drive friction disc and pawl, can effectual reduction drive element's power and drive power requirement, adopts two sections staggered cams to drive friction disc and pawl respectively in proper order, adopts the friction disc synchronous earlier, adopts the pawl locking afterwards, and the friction disc only is used for synchronous rotational speed, and the big moment of torsion of ratchet dish end is braked through the pawl, can effectively reduce the requirement to the friction disc, because the cam has the face of auto-lock, the drive element of this system need not provide power again after the braking, can reduce system energy loss, effectively improve system efficiency.
It should be noted that, for other descriptions about the friction plate, the second cam, and the like, reference may be made to the description related to embodiment 1, and details are not described herein.
Illustratively, as shown in fig. 9, the first cam group 121 and the second cam group 122 are arranged in order in the radial direction of the cam ring 120. As shown in fig. 8, the pawl groove 131 and the friction surface 132 are sequentially disposed in a radial direction of the ratchet ring 130. The first cams in the first cam set 121 are staggered with respect to the second cams in the second cam set 122. The staggered arrangement means that the first cam in the first cam group 121 and the second cam in the second cam group 122 are staggered, so that the second cam group 122 and the first cam group 121 can drive the corresponding friction plate 150 and the pawl 140 in sequence.
Illustratively, as shown in fig. 7, the brake 100 further includes a plurality of rotating shafts 160, a plurality of mounting holes 111 are provided on the inner circumferential wall of the brake hub 110, and the plurality of rotating shafts 160 are inserted into the corresponding mounting holes 111. The axis of the rotating shaft 160 is perpendicular to the axis of the brake hub 110. Each rotating shaft 160 of a part of the rotating shafts 160 corresponds to one pawl 140 and one friction plate 150, each rotating shaft 160 of the other part of the rotating shafts 160 corresponds to one pawl 140 independently, and the friction plates 150 and the pawls 140 are rotatably sleeved on the corresponding rotating shafts 160.
It should be noted that, for the corresponding manner of the rotating shaft, the pawl and the friction plate, reference may be made to the description of embodiment 1, and details are not described herein.
The brake adopts embedded rigid force transmission, has large braking torque capacity, can conveniently adjust the braking torque limit value by increasing or decreasing the quantity of the ratchet pieces, and does not need to greatly increase the cost. The friction plate is skillfully utilized to realize deceleration synchronization mechanically, a complex control strategy or control mode is not needed, the connection is stable, and no impact exists. The power is not required to be kept (no additional energy consumption) in the working state, the friction plates are thoroughly separated after being released, and the dragging loss of the friction plates is avoided. Each kinematic pair swings in a small amplitude, does not need axial translation movement, utilizes the cam ring to control the stroke in two directions, forcibly returns, and is simple, reliable and safe. The cost is low, firstly, a common hydraulic cylinder can be used as a power source, the requirement on the cleanliness of hydraulic oil is reduced, and secondly, the expensive hydraulic control valve can be greatly reduced or even cancelled.
In another aspect of the invention, there is provided a transmission comprising a brake, the brake being as described above.
The transmission of the embodiment has the brake described above, and the first cam group arranged on the cam ring is used for driving the pawls, so that the power and driving force requirements of the driving element can be effectively reduced.
In another aspect of the invention, a vehicle is provided, the vehicle comprising a brake as described above or a gearbox as described above.
The vehicle of the embodiment has the transmission or brake described above, which uses the first cam group disposed on the cam ring to drive the pawls, and can effectively reduce the power and driving force requirements of the driving element.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention, such as: the number of the ratchet wheels, the pawls and the friction plates can be adjusted according to the transmitted torque, and the number of the ratchet wheels, the pawls and the friction plates can be increased or decreased. Such variations and modifications are also to be considered within the scope of the present invention.

Claims (12)

1. A brake comprising a brake hub, a cam ring, a ratchet ring, and at least one pawl; wherein the content of the first and second substances,
the ratchet ring is rotatably connected with the brake hub, at least one pawl groove is formed in the ratchet ring, and each pawl corresponds to at least one pawl groove;
the cam ring is rotatably arranged in the brake hub, a first cam group is arranged on the cam ring and comprises at least one first cam, each first cam corresponds to at least one pawl, and therefore when the cam ring rotates, the first cams can drive the corresponding pawls to be clamped into or out of the corresponding pawl grooves.
2. The brake of claim 1, further comprising at least one friction plate, wherein a friction surface is further disposed on the ratchet ring, wherein the friction surface corresponds to the friction plate; wherein the content of the first and second substances,
the friction plate can abut against the friction surface before the pawls are clamped into the pawl grooves.
3. The brake of claim 2 wherein said cam ring further includes a second set of cams including at least one second cam, each said second cam corresponding to at least one said friction pad, said second cams driving said friction pads into abutment with said friction surfaces as said cam ring rotates.
4. The brake of claim 3, wherein the first cam group and the second cam group are each disposed on an outer peripheral wall of the cam ring, and the first cam group and the second cam group are disposed in order in an axial direction of the cam ring;
the pawl groove and the friction surface are both arranged on the inner peripheral wall of the ratchet ring, and the pawl groove and the friction surface are sequentially arranged along the axial direction of the ratchet ring.
5. The brake of claim 3, wherein the first and second cam sets are each disposed on an end surface of the cam ring facing the ratchet ring, and the first and second cam sets are disposed in series in a radial direction of the cam ring;
the pawl groove and the friction surface are both arranged on the end face, facing the cam ring, of the ratchet ring, and the pawl groove and the friction surface are sequentially arranged along the radial direction of the ratchet ring.
6. The brake of claim 5 further comprising a face bearing disposed between the cam ring and the brake hub to rotate the cam about the brake hub.
7. A brake according to any one of claims 3 to 6, wherein first cams of the first set are interleaved with second cams of the second set.
8. A brake according to any one of claims 2 to 6, further comprising at least one rotary shaft rotatably disposed in the brake hub, the axis of the rotary shaft being parallel or perpendicular to the axis of the brake hub, each rotary shaft corresponding to at least one pawl and/or at least one friction plate; wherein the content of the first and second substances,
the friction plate and the pawl are rotatably sleeved on the corresponding rotating shaft.
9. The brake of claim 8 wherein each of said shafts is sleeved in turn with one of said friction pads and one of said pawls.
10. The brake of any one of claims 1-6 further comprising a drive element coupled to the cam ring for driving rotation of the cam ring.
11. A gearbox comprising a brake, wherein the brake of any one of claims 1-10 is adopted as the brake.
12. A vehicle comprising a brake as claimed in any one of claims 1 to 10 or a gearbox as claimed in claim 11.
CN202010197916.6A 2020-03-19 2020-03-19 Brake, gearbox and vehicle Pending CN111207165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010197916.6A CN111207165A (en) 2020-03-19 2020-03-19 Brake, gearbox and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010197916.6A CN111207165A (en) 2020-03-19 2020-03-19 Brake, gearbox and vehicle

Publications (1)

Publication Number Publication Date
CN111207165A true CN111207165A (en) 2020-05-29

Family

ID=70787156

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010197916.6A Pending CN111207165A (en) 2020-03-19 2020-03-19 Brake, gearbox and vehicle

Country Status (1)

Country Link
CN (1) CN111207165A (en)

Similar Documents

Publication Publication Date Title
CN107850134B (en) The decoupling device of internal combustion engine and plug-in hybrid speed changer
US6904987B2 (en) Electrical drive for a vehicle
JP6200515B2 (en) Power transmission device
JP3635460B2 (en) Power transmission device
JP2013517175A (en) Hybrid electric vehicle drive system and control system for controlling hybrid electric vehicle drive system
JP2003194104A (en) Ball ramp clutch having force amplifying configuration
JP6235234B2 (en) Transmission device with two gears for an electric machine with a system for controlling angular play
CN110382898B (en) Clutch device and hybrid module
CN107763153B (en) Planetary gear type two-speed transmission for electric vehicle
US10563704B2 (en) Locking transfer case
KR20070083461A (en) Planar coupling assembly for an automatic transmission
US9551222B2 (en) Freewheel hydraulic motor
US6814686B2 (en) Dual engine crankshaft coupling arrangement
KR20180055716A (en) Triple clutch and actuator thereof
CN105383455A (en) Wet brake drive axle
CN211737827U (en) Brake, gearbox and vehicle
CN111207165A (en) Brake, gearbox and vehicle
US9482291B2 (en) Prime mover arrangement comprising a fluid-actuated clutch arrangement and a multi-disk clutch
RU2468936C2 (en) Automotive controlled drive axle
JP7486844B2 (en) Parking/clutch shared control device, operation method thereof, and vehicle
WO2004053350A1 (en) A hybrid driving device and clutch/damper mechanism therefor and methods relating thereto
KR102127984B1 (en) Brake system for vehicle
CN112334348A (en) Transmission for hybrid vehicle
CN218510039U (en) Composite clutch
CN219796028U (en) PTO structure and gearbox

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 100098 room 6c7, 6th floor, building 1, yard 13, Dazhongsi, Haidian District, Beijing

Applicant after: Beijing Century Xingyuan Technology Development Co.,Ltd.

Address before: 100098 room 5B15, Huajie building, No.1 building, yard 13, Dazhong temple, Haidian District, Beijing

Applicant before: Beijing Century Xingyuan Technology Development Co.,Ltd.

CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Zhu Hongxing

Inventor before: Huang Churan

Inventor before: Zhu Hongxing