CN107448511B - A kind of wheel drag - Google Patents
A kind of wheel drag Download PDFInfo
- Publication number
- CN107448511B CN107448511B CN201710807915.7A CN201710807915A CN107448511B CN 107448511 B CN107448511 B CN 107448511B CN 201710807915 A CN201710807915 A CN 201710807915A CN 107448511 B CN107448511 B CN 107448511B
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- China
- Prior art keywords
- brake
- rocker
- cam
- plate
- connecting shaft
- 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.)
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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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/24—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
-
- 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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/26—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes both extending in the same direction from their pivots
- F16D51/30—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes both extending in the same direction from their pivots fluid actuated
-
- 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
-
- 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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/62—Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play
-
- 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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
Abstract
The invention discloses a kind of wheel drags, including back-plate, the top of back-plate is connect by the axis of rotary shaft and rocker, the top of rocker is fixedly connected with brake chamber, the push rod of brake chamber and the upper end of rocker arm are hinged; the lower end of rocker arm is fixedly connected with cam by the connecting shaft through rocker, and the both ends of connecting shaft pass through spline respectively and are fixedly connected with cam and rocker arm, and connecting shaft is rotatably connect with rocker by bearing；The cam, connecting shaft, rocker, brake chamber, push rod and rocker arm collectively constitute floated rocker frame mechanism, and entire floated rocker frame mechanism can generate swing centered on rotary shaft；The lower end of back-plate is fixedly connected by pin with a support plate, and the left and right ends of support plate are respectively arranged with semicircular through-hole；In the semicircular through-hole for the left and right ends that support plate is arranged in by pin insertion respectively in the lower end of two brake-shoes, the upper end of two brake-shoes and cam engagement.
Description
The present patent application is the divisional application of parent application " pneumatic drum type floating cam balances self-gap-regulating wheel drag ",
Parent application application No. is 2016100490565, the applying date is on January 25th, 2016.
Technical field
The invention belongs to braking device technical field, relate in particular to a kind of pneumatic drum type floating cam balance from
Adjust gap wheel drag.
Background technique
The structure of traditional pneumatic drum brake as shown in Figure 1, include brake chamber a, push rod b, rocker arm c, cam e,
Back-plate f, brake-shoe h (friction facing g is fixed on general brake-shoe h, it is described below middle by brake-shoe h and friction facing g
Define integrated, be referred to as brake-shoe), upper return spring i, lower return spring j, spindle nose k,
Push rod b movement is controlled by brake chamber a, push rod b drives rocker arm c movement, and rocker arm c band moving cam e rotates, cam
Brake-shoe h is simultaneously opened to two sides that (bottom end of brake-shoe h is hinged on by pin shaft d and brakes bottom by the tip contact of e and brake-shoe h
On plate f), so that brake-shoe h is generated friction with brake drum (not shown) and is braked.
The brake-shoe includes neck hoof and from hoof, two brake-shoes respectively have a fulcrum (i.e. two pin shaft d's in Fig. 1
Hinge joint), a direction of rotation when brake-shoe opens is consistent with the direction of rotation of brake drum, referred to as neck hoof；Another braking
The direction of rotation of direction of rotation and brake drum when hoof opens is on the contrary, be known as from hoof.When brake operation, due to the original of structure
Cause so that the frictional force of neck hoof and brake drum is growth trend, and subtracts gesture from the frictional force of hoof and brake drum, so that two
The braking moment of brake-shoe is different, and two brake-shoes will cause abrasion loss difference after working after a period of time, so that two brake-shoes
Gap away from brake drum is also different, when two brake-shoe of cam actuated is opened outward, brake-shoe and braking in same gyration
Bulging gap is also different, contacts so as to cause when the small brake-shoe in gap with brake drum, and cam is by against cannot be followed by this time
Continuous gyration, another big brake-shoe of gap can not be contacted with brake drum at this time, and friction area reduces, and skid resistance is cut significantly
It is weak.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of pneumatic drum type floating cams to balance self-gap-regulating
Wheel drag.
The present invention is achieved by the following technical solutions:
A kind of pneumatic drum type floating cam balance self-gap-regulating wheel drag, including back-plate (11), back-plate
Top is connect by rotary shaft (16) and the bottom end axis of rocker (4), and the top of rocker has been bolted to connection brake chamber
(1), the push rod of brake chamber and the upper end of a rocker arm (3) are hinged, and the lower end of rocker arm is solid by the connecting shaft (17) through rocker
Surely cam (5) are connected, the both ends of connecting shaft pass through spline respectively and are fixedly connected with cam and rocker arm, and connecting shaft (17) passes through axis
It holds and is rotatably connect with rocker；The cam (5), connecting shaft (17), rocker (4), brake chamber (1), push rod (2) and rocker arm
(3) floated rocker frame mechanism is collectively constituted, entire floated rocker frame mechanism can generate swing centered on rotary shaft (16)；
The lower end of back-plate (11) is fixedly connected by pin with a support plate (14), the left and right ends difference of support plate
It is provided with semicircular through-hole (15)；
The semicircular logical of the left and right ends of support plate is arranged in the lower end of two brake-shoes (8) by pin insertion respectively
In hole (15), the upper end and cam (5) of two brake-shoes (8) cooperate；Be connected on two brake-shoes return spring (10) and
Lower return spring (12).
In the above-mentioned technical solutions, it is additionally provided between back-plate (11) and brake-shoe (8) and plays dustproof effect
By disk (6), the through-hole (18) of the oblong of mating connection axis (17) swing is offered on disk (6), so that connecting shaft can
It is swung in through-hole without being touched with by disk.
In the above-mentioned technical solutions, there are two spacer pins for setting on back-plate (11).
In the above-mentioned technical solutions, the outer wall of brake-shoe is fixedly installed friction facing (7).
The operation method of the pneumatic drum type floating cam balance self-gap-regulating wheel drag is as follows:
Putter action is controlled by brake chamber, push rod drives rocking motion, and rocker arm band moving cam rotates, cam and braking
The folding end in contact of hoof simultaneously opens brake-shoe to two sides, contacts brake-shoe with brake drum；It is smaller by one apart from brake drum gap
The brake-shoe of side can be contacted first with brake drum, be opened brake-shoe to two sides since cam itself continues rotation angle, so convex
Wheel can be fulcrum by the brake-shoe that elder generation contacts with brake drum and be driven entire floated rocker frame mechanism to phase centered on rotary shaft
An anti-side oscillation is to promote the brake-shoe of the other side to contact with brake drum；Meanwhile automobile is made in forward travel or reversing
The lower end of dynamic hoof can outwardly open under the action of the normal force of wheel direction of rotation along wheel direction of rotation, to make two
Brake-shoe forms double neck hoof structures.
The advantages and benefits of the present invention are:
The present invention increases the floated rocker frame mechanism being connected with brake-shoe, passes through compared with traditional drum brake
The floated rocker frame mechanism, when cam itself rotation opens brake-shoe to two sides, cam can be with the brake-shoe of side for branch
Point actuated by cam center swing other side brake-shoe contacted with brake drum (cam center swing while, cam itself
Continue rotation and increase the distance that brake-shoe is opened), so that the brake-shoe of two sides and brake drum be made to come into full contact with without by two sides
Brake-shoe and the inconsistent influence in brake drum gap；Meanwhile the lower end of two brake-shoes of the invention is embedded in by pin respectively
It is arranged in the semicircular through-hole of the left and right ends of support plate, this structure can guarantee automobile either forward travel still
The lower end of brake-shoe can outwardly open under the action of the normal force of wheel direction of rotation along wheel direction of rotation when reversing, from
And two brake-shoes is made to form double neck hoof structures, the normal force for being subject to it is all converted to growth trend torque, so that braking effect obtains
To be promoted, while effectively two sides brake-shoe being avoided to wear inconsistent problem.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traditional pneumatic drum brake.
Fig. 2 is the structural schematic diagram of the embodiment of the present invention.
Fig. 3 is the side view of Fig. 2.
Wherein: 1 is brake chamber, and 2 be push rod, and 3 be rocker arm, and 4 be rocker, and 5 be cam, and 6 is, by disk, 7 are friction facing,
8 be brake-shoe, and 9 be spacer pin, and 10 be upper return spring, and 11 be back-plate, and 12 be lower return spring, and 13 be spindle nose, and 14 are
Support plate, 15 be semicircular through-hole, and 16 be rotary shaft, and 17 be connecting shaft, and 18 be through-hole.
Specific embodiment
Technical solution of the present invention is further illustrated combined with specific embodiments below.
A kind of pneumatic drum type floating cam balance self-gap-regulating wheel drag, as shown in Figures 2 and 3, including back-plate
11, (i.e. the right side of back-plate 11 in Fig. 3) setting one (primarily serves dust-proof work by disk by disk before back-plate 11
With preventing external dust from entering braking system), the top of back-plate 11 passes through the rocker 4 of rotary shaft 16 and up-side down triangle
Bottom end axis connects, and the top of the rocker 4 of up-side down triangle has been bolted to connection brake chamber 1, the push rod 2 of brake chamber 1 with
The upper end of one rocker arm 3 is hinged, and the lower end of rocker arm 3 is by being fixedly connected with cam 5, cam with the connecting shaft 17 by disk 6 through rocker 4
5 are arranged in front of the disk 6 and (i.e. lean on the right side of disk 6 in Fig. 3), the both ends of connecting shaft 17 pass through respectively spline and cam 5 and
Rocker arm 3 is fixedly connected, and connecting shaft 17 is rotatably connect with rocker 4 by bearing；The cam 5, connecting shaft 17, rocker 4,
Brake chamber 1, push rod 2 and rocker arm 3 collectively constitute floated rocker frame mechanism, and entire floated rocker frame mechanism can be with rotary shaft 16
Centered on generate swing, in order to guarantee that floated rocker frame mechanism can be swung, swung offering mating connection axis 17 on the disk
Oblong through-hole 18 so that connecting shaft 17 can be swung in through-hole without with touch by disk；
The lower end of back-plate 11 is fixedly connected by pin with a support plate 14, and support plate 14 is rectangle steel plate, branch
The left and right ends of board 14 are respectively arranged with semicircular through-hole 15；
The invention also includes two brake-shoes 8, brake-shoe 8 is semicircle, and two brake-shoes 8 are symmetrical arranged, brake-shoe 8
Outer wall is fixedly installed friction facing 7, and the lower end of two brake-shoes 8 is provided with pin, and pin is movably embedded in setting and exists
(lower end of brake-shoe is arranged by pin insertion in support plate respectively in the semicircular through-hole 15 of the left and right ends of support plate 14
Left and right ends semicircular through-hole 15 in, braking when this structure can guarantee automobile either forward travel is still moved backward
The lower end of hoof 8 can outwardly open under the action of the normal force of wheel direction of rotation along wheel direction of rotation), two brake-shoes
8 upper end and cam 5 cooperate, and pass through the folding condition of rotation two brake-shoes 8 of control of cam；It is connected on two brake-shoes 8
There are upper return spring 10 and lower return spring 12, upper return spring 10 and lower return spring 12 are that two brake-shoes 8 provide closure
Convergent force；It is also set up on back-plate 6 there are two spacer pin 9, two spacer pins 9 are used to limit the position of brake-shoe 8；Brake bottom
Plate 11 and the spindle nose 13 (spindle nose 13 be a circular through hole) being provided centrally with for penetrating axle by disk 6, when installation, will brakings
Bottom plate 11 and axle is penetrated by spindle nose 13 by disk 6, and brake drum is installed into axle.
It is acted in use, controlling push rod 2 by brake chamber 1, push rod 2 drives rocker arm 3 to act, and rocker arm 3 passes through connecting shaft
17 band moving cams 5 rotate, and cam 5 contacts with the top (i.e. the folding end of brake-shoe) of brake-shoe 8 and pushes up brake-shoe 8 to two sides
It opens, contacts brake-shoe 8 with brake drum (not indicating brake drum in figure), the brake-shoe apart from the smaller side in brake drum gap can be first
It contacts with brake drum, opens brake-shoe to two sides since cam continues rotation angle under acting in the motive force of push rod,
So cam can be fulcrum by the brake-shoe that elder generation contacts with brake drum and be driven entire floated rocker machine centered on rotary shaft
Structure promotes the brake-shoe of the other side to contact with brake drum to opposite side swing, and (cam passes through 17 synchronous belt of connecting shaft at this time
Movable pendulum frame 4 and brake chamber 1, push rod 2 and rocker arm 3 are swung together；I.e. cam driven entirely floated rocker frame mechanism to opposite
One side oscillation)；It (is rotated clockwise referring to Fig. 2) when wheel braking drum rotates forward, brakes two sides by the swing of cam
After hoof is contacted with brake drum, normal force of the upper end of left hand brake hoof as fulcrum force lower end in brake drum direction of rotation is acted on
Lower edge is opened clockwise, formation neck hoof (that is, direction of rotation when left hand brake hoof opens is consistent with the direction of rotation of brake drum,
Form neck hoof), and the lower end of right side brake hoof is opened clockwise as fulcrum force upper end edge, is similarly formed neck hoof, therefore two
Side brake-shoe constitutes double neck hoof, and the normal force for being subject to it is all converted to growth trend torque, so that braking effect is promoted, simultaneously
Effectively two sides brake-shoe is avoided to wear inconsistent problem；Similarly, (counterclockwise referring to Fig. 2 when wheel braking drum backwards rotation
Rotation), after contacting two sides brake-shoe with brake drum by the swing of cam, the upper end of right side brake hoof is as under fulcrum force
It holds and is opened counterclockwise in the normal force effect lower edge of brake drum direction of rotation, form neck hoof (that is, rotation when left hand brake hoof opens
It is consistent with the direction of rotation of brake drum to turn direction, forms neck hoof), and the lower end of left hand brake hoof is inverse as fulcrum force upper end edge
Hour hands open, and form neck hoof, equally constitute double neck hoof structures.
Shown in the drawings of exemplary embodiment of the present invention.However, the present invention can be presented as a variety of different forms, and
It is not intended to be limited to the exemplary embodiment described here.And be to provide these embodiments, thus make it is of the invention comprehensively and
Completely, and those skilled in the art be will fully convey the scope of the invention to.It for ease of explanation, herein can be with
Using the spatially relative terms such as "upper", "lower", "left", "right", " front ", " back side ", for one shown in explanatory diagram
Relationship of a elements or features relative to another elements or features.It should be understood that other than the orientation shown in the figure,
Spatial terminology is intended to include the different direction of device in use or operation.For example, being chatted if the device in figure is squeezed
It states and will be located into other elements or feature "upper" for the element positioned at other elements or feature "lower".Therefore, exemplary term
"lower" may include both upper and lower orientation.Device can be positioned in other ways and (be rotated by 90 ° or be located at other orientation), this
In the used opposite explanation in space can be interpreted accordingly.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (3)
1. a kind of wheel drag, it is characterised in that: including back-plate (11), the top of back-plate passes through rotary shaft (16)
Connect with the bottom end axis of rocker (4), the top of rocker has been bolted to connection brake chamber (1), the push rod of brake chamber with
The upper end of one rocker arm (3) is hinged, and the lower end of rocker arm is fixedly connected with cam (5), connecting shaft by the connecting shaft (17) through rocker
Both ends pass through spline respectively and be fixedly connected with cam and rocker arm, and connecting shaft is rotatably connect with rocker by bearing；Institute
It states cam (5), connecting shaft (17), rocker (4), brake chamber (1), push rod (2) and rocker arm (3) and collectively constitutes floated rocker machine
Structure, entire floated rocker frame mechanism can generate swing centered on rotary shaft (16)；
The lower end of back-plate (11) is fixedly connected by pin with a support plate (14), and the left and right ends of support plate are respectively set
Have semicircular through-hole (15), the left and right ends of support plate are arranged in the lower end of two brake-shoes (8) by pin insertion respectively
Semicircular through-hole (15) in, the upper ends of two brake-shoes (8) and cam (5) cooperate；Last time is connected on two brake-shoes
Position spring (10) and lower return spring (12)；
Be additionally provided between back-plate (11) and brake-shoe (8) play dustproof effect by disk (6), opened up on disk (6)
Have mating connection axis (17) swing oblong through-hole (18) so that connecting shaft can be swung in through-hole without with lean on disk
It touches.
2. wheel drag according to claim 1, it is characterised in that: there are two limits for setting on back-plate (11)
Pin.
3. wheel drag according to claim 1, it is characterised in that: the outer wall of brake-shoe is fixedly installed friction facing
(7)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710807915.7A CN107448511B (en) | 2016-01-25 | 2016-01-25 | A kind of wheel drag |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710807915.7A CN107448511B (en) | 2016-01-25 | 2016-01-25 | A kind of wheel drag |
| CN201610049056.5A CN105570349B (en) | 2016-01-25 | 2016-01-25 | Pneumatic drum type floating cam balance self-gap-regulating wheel drag |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610049056.5A Division CN105570349B (en) | 2016-01-25 | 2016-01-25 | Pneumatic drum type floating cam balance self-gap-regulating wheel drag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107448511A CN107448511A (en) | 2017-12-08 |
| CN107448511B true CN107448511B (en) | 2019-05-10 |
Family
ID=55880830
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710807915.7A Active CN107448511B (en) | 2016-01-25 | 2016-01-25 | A kind of wheel drag |
| CN201710807278.3A Expired - Fee Related CN107477108B (en) | 2016-01-25 | 2016-01-25 | A kind of application method of pneumatic drum type floating cam balance self-gap-regulating wheel drag |
| CN201610049056.5A Active CN105570349B (en) | 2016-01-25 | 2016-01-25 | Pneumatic drum type floating cam balance self-gap-regulating wheel drag |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710807278.3A Expired - Fee Related CN107477108B (en) | 2016-01-25 | 2016-01-25 | A kind of application method of pneumatic drum type floating cam balance self-gap-regulating wheel drag |
| CN201610049056.5A Active CN105570349B (en) | 2016-01-25 | 2016-01-25 | Pneumatic drum type floating cam balance self-gap-regulating wheel drag |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN107448511B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448511B (en) * | 2016-01-25 | 2019-05-10 | 天津职业技术师范大学 | A kind of wheel drag |
| CN107061552A (en) * | 2017-05-18 | 2017-08-18 | 江苏恒力制动器制造有限公司 | A kind of lever drum brake |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1865591A (en) * | 1928-04-06 | 1932-07-05 | Bendix Brake Co | Retarding mechanism |
| FR693091A (en) * | 1929-04-11 | 1930-11-14 | Bendix Brake Co | Brake improvements |
| GB532295A (en) * | 1939-08-25 | 1941-01-21 | Morris Commercial Cars Ltd | Improvements in brakes for vehicle wheels |
| GB617049A (en) * | 1946-09-27 | 1949-01-31 | Shadwell Harry Grylls | Improvements in or relating to brakes |
| US3368648A (en) * | 1966-03-28 | 1968-02-13 | Rockwell Standard Co | Floating cam brake having brake shoe linings of different volumes |
| DE3226697A1 (en) * | 1982-07-16 | 1984-01-19 | Deutsche Perrot-Bremse Gmbh, 6800 Mannheim | Simplex S cam brake |
| DE3545235A1 (en) * | 1985-12-20 | 1987-07-02 | Rockwell Golde Gmbh | VEHICLE DRUM BRAKE |
| DE3831297A1 (en) * | 1988-09-14 | 1990-03-15 | Perrot Bremse Gmbh Deutsche | Internal-shoe servo brake, particularly a parking or hand brake for motor vehicles |
| CN2172242Y (en) * | 1993-04-15 | 1994-07-20 | 云南省交通科学研究所 | Floating cam pneumatic automotive brake |
| JPH10159878A (en) * | 1996-11-26 | 1998-06-16 | Nisshinbo Ind Inc | Drum brake device |
| JP4000025B2 (en) * | 2002-08-16 | 2007-10-31 | ヤマハ発動機株式会社 | Vehicle |
| CN2680926Y (en) * | 2004-03-10 | 2005-02-23 | 梁育红 | Floating type adjustment-free automobile brake |
| CN201284804Y (en) * | 2008-10-10 | 2009-08-05 | 谭富春 | Bidirectional pushing structure brake with drum type floating brake shoe |
| CN101408234B (en) * | 2008-10-10 | 2010-07-28 | 谭富春 | Brake with drum type floating brake shoe bidirectional propulsion structure |
| CN201875029U (en) * | 2010-10-29 | 2011-06-22 | 潍坊金力机电有限公司 | Self-energizing brake |
| CN205350139U (en) * | 2016-01-25 | 2016-06-29 | 天津职业技术师范大学 | Balanced self -modulation crack wheel drag of unsteady cam of pneumatic drum -type |
| CN107448511B (en) * | 2016-01-25 | 2019-05-10 | 天津职业技术师范大学 | A kind of wheel drag |
-
2016
- 2016-01-25 CN CN201710807915.7A patent/CN107448511B/en active Active
- 2016-01-25 CN CN201710807278.3A patent/CN107477108B/en not_active Expired - Fee Related
- 2016-01-25 CN CN201610049056.5A patent/CN105570349B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105570349A (en) | 2016-05-11 |
| CN107477108B (en) | 2019-04-23 |
| CN107477108A (en) | 2017-12-15 |
| CN105570349B (en) | 2018-01-12 |
| CN107448511A (en) | 2017-12-08 |
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