CN110307272A - Double hoof overlapping planes overlap motion stops - Google Patents
Double hoof overlapping planes overlap motion stops Download PDFInfo
- Publication number
- CN110307272A CN110307272A CN201910639230.5A CN201910639230A CN110307272A CN 110307272 A CN110307272 A CN 110307272A CN 201910639230 A CN201910639230 A CN 201910639230A CN 110307272 A CN110307272 A CN 110307272A
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- Prior art keywords
- brake
- plane
- bushing
- shoe
- plate
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- 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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- 210000000003 hoof Anatomy 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F16D51/46—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action
- F16D51/48—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes
- F16D51/52—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes fluid actuated
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention discloses a kind of double hoof overlapping plane overlapping motion stops, its two brake-shoes are arranged on back-plate facing with each otherly, the driven end of every brake-shoe is fixedly installed a bushing, the Internal periphery of bushing includes at least two into V-type arrangement and the plane axially extending along bushing, the pin shaft that the driven end of every brake-shoe passes through its bushing by one is coupled with back-plate, when the friction plate close to brake-shoe driving end is contacted with brake drum, each pin shaft is contacted with a planar line in two planes at V-type arrangement of respective bush, and the center of back-plate is directed toward in the extension direction of the upper plane in the plane arranged at V-type of two of one of bushing, the lower plane in plane that two of another bushing arrange at V-type is parallel with the upper plane of first bushing, upper plane is compared with lower plane closer to back-plate Center.The present invention solves the problems, such as that work torque is small when the braking of existing pneumatic drum brake, friction disc wear is uneven, braking hair is gnawed, noise is big.
Description
Technical field
The present invention relates to a kind of brake, in particular to a kind of double hoof overlapping planes overlap motion stops.
Background technique
Existing vehicle brake is broadly divided into drum brake and disk brake, and drum brake is divided into air pressure drum again
Formula brake and hydraulic drum brake.Weight, medium-sized cargo truck generally use pneumatic drum brake, primary structure at present
Are as follows: two brake-shoes are arranged on back-plate facing with each otherly, and the driving end of every brake-shoe is resisted against the cam of camshaft
On, the supported end of every brake-shoe is arranged circular hole, cylindrical body pin shaft pass through the circular hole of brake-shoe supported end setting and with braking bottom
Plate is fixedly connected, and two brake-shoes are connected by return spring.When braking, this generally existing friction plate of brake and brake drum are not
It can be bonded completely, braking moment is small, friction disc wear is uneven, braking hair is gnawed, noise is big, the disadvantages of dragging.
Summary of the invention
Work torque is small when to solve the braking of existing pneumatic drum brake, friction disc wear is uneven, braking hair is gnawed, makes an uproar
Sound is big, the problems such as dragging, and the present invention provides a kind of double hoof overlapping plane overlapping motion stops.
The technical scheme adopted by the invention is as follows:
A kind of double hoof overlapping plane overlapping motion stops, are mounted on the inside of brake drum, including back-plate, driving dress
Set, one end of back-plate is arranged in brake-shoe, friction plate, returning device and pin shaft, the driving device, the brake-shoe has
Two, friction plate is fixed on the exterior arc surface of every brake-shoe, every brake-shoe has a driving end and a driven end, every system
The driven end of dynamic hoof is fixedly installed a bushing, and the Internal periphery of the bushing includes at least two and arranges at V-type and along bushing axis
To the plane of extension, two brake-shoes are arranged on back-plate facing with each otherly, the driving end of every brake-shoe against
On the driving part of driving device, the driven end of every brake-shoe is coupled with back-plate by a pin shaft, the pin shaft
Bushing on the driven end of corresponding brake-shoe, two brake-shoes are connected by returning device, are driven when close to brake-shoe
When the friction plate of moved end and brake drum contact, each pin shaft with one in two planes at V-type arrangement of respective bush
Planar line contact, and the extension direction of the upper plane in plane arrange at V-type of two of one of bushing is directed toward and brakes bottom
The center of plate, the lower plane in two of another bushing planes at V-type arrangement is parallel with the upper plane of first bushing, institute
Plane is stated compared with lower plane closer to the center of back-plate.
Preferably, the driving device is the camshaft of air pressure driving or the voussoir of air pressure driving or the song of air pressure driving
The hydraulic shunt pump of handle mechanism or hydraulic-driven.
Preferably, the driving device is the camshaft of air pressure driving, and the driving end of the brake-shoe is provided with idler wheel, should
Idler wheel is resisted against on the cam of camshaft.
Preferably, the cam of the camshaft is S-shaped.
Optionally, the driving device is two-way hydraulic cylinder, and the driving end of two brake-shoes is born against in bidirectional hydraulic
In the groove of the driving part at the both ends of cylinder.
Preferably, the returning device is tension spring, and at least two, wherein the both ends of a tension spring are connected to two
On the part at the close driving end of brake-shoe, the both ends of another tension spring are connected to the close driven end of two brake-shoes
Part on.
Preferably, the pin shaft is cylindrical body pin shaft.
Preferably, one end of the pin shaft is provided with card slot, and two pin shafts are by being stuck in its card slot and being located at two
Trapezoidal locking plate between person is fixed with back-plate, which is fixed by fixing piece and back-plate.
Preferably, the one end close to each other for the plane that two of the bushing arrange at V-type is connected by an arc surface.
Preferably, the one end of the plane that two of the bushing arrange at V-type being located remotely from each other passes through symmetrical two sections of circles
Cambered surface connection.
The operation principle of the present invention is that:
When needing to brake, first by driving device driving brake-shoe driving end expand outwardly, at this point, brake-shoe around its from
Pin shaft in the bushing of moved end is turned out, when the friction plate close to brake-shoe driving end is contacted with brake drum, each pin shaft
It is contacted with a planar line in two planes at V-type arrangement of respective bush, and two of one of bushing are at V-type
The center of back-plate is directed toward in the extension direction of upper plane in the plane of arrangement, two of another bushing are at V-type arrangement
Lower plane in plane is parallel with the upper plane of first bushing, at this point, the brake-shoe as the first neck hoof is in friction
Under the action of drive its driven end radially outward to press to brake drum along back-plate, play brake-shoe and brake drum overlapping effect
Fruit makes the friction plate close to the first neck hoof driving end press tighter with brake drum；What the brake-shoe as the second neck hoof was subject to rubs
It wipes power and keeps the second neck hoof whole and press to brake drum along the direction parallel but opposite with the first neck hoof radial motion direction, when close to the
After friction plate on two neck hoof driven ends is contacted with brake drum, second leads the frictional force that is subject to of hoof driven end and resulting rubs
Torque is wiped, so that the friction plate on entire second neck hoof is overlapped and press tighter completely with brake drum, to make friction plate
More uniform and bigger to brake drum generation braking moment is worn, while being eliminated as caused by friction plate local friction
Braking hair gnaw, the problem that noise is big.When vehicle wheel rotation contrary (as moved backward), working principle is same as above；Need to release system
When dynamic, the driving force to brake-shoe driving end is released by driving device first, at this time under the action of the returning place force of returning device,
The driving end of brake-shoe and driven end are to rapidly return back to implement the initial position before braking, are made to solve since return is unsmooth
At sticking of brakes problem.
Detailed description of the invention
Fig. 1 is that double hoof of one embodiment of the invention overlap the schematic front view that plane overlaps motion stops；
Fig. 2 is that double hoof shown in FIG. 1 overlap schematic cross-sectional view of the plane overlapping motion stops at A-A
Fig. 3 is the cross-sectional view of bushing shown in FIG. 1；
In figure: 0, brake drum；1, back-plate；2, camshaft；31, brake-shoe；32, brake-shoe；4, friction plate；5, it serves as a contrast
Set；6, pin shaft；7, locking plate；8, idler wheel；9, tension spring.
Specific embodiment
Specific embodiments of the present invention are described further with reference to the accompanying drawing.
As shown in Figures 1 to 3, double hoof overlapping plane overlapping motion stops of the present embodiment are mounted on the inside of brake drum 0,
Including back-plate 1, driving device, brake-shoe 31 and 32, friction plate 4, returning device and pin shaft 6, the driving device setting
In one end of back-plate 1, friction plate 4 is respectively and fixedly provided on the exterior arc surface of brake-shoe 31 and 32, brake-shoe 31 and 32 has one
End and a driven end are driven, driving end is completed to brake-shoe around the driving of pin shaft fixed-axis rotation, and driven end completes brake-shoe around pin
The fixed-axis rotation of axis and move in parallel, so that fixed-axis rotation and moving in parallel, which is synthesized plane, overlaps movement, brake-shoe 31 and
32 driven end is fixedly installed a bushing 5, and the Internal periphery of bushing 5 includes at least two and arranges at V-type and along 5 axis of bushing
To the plane of extension, brake-shoe 31 and 32 is arranged in facing with each otherly on back-plate 1, and the driving end of brake-shoe 31 and 32 is supported
It leaning against on the driving part of driving device, the driven end of brake-shoe 31 and 32 is respectively coupled by a pin shaft 6 with back-plate 1,
Pin shaft 6 passes through the bushing 5 on the driven end of corresponding brake-shoe, and brake-shoe 31 and 32 is connected by returning device, when close to braking
When hoof 31 and 32 drives the friction plate 4 at end and brake drum 0 to contact, each pin shaft 6 is arranged with two of respective bush 5 at V-type
Plane in the contact of a planar line, and the extension of the upper plane in the plane arranged at V-type of two of one of bushing 5
The center of back-plate 1 is directed toward in direction, lower plane and first lining in two planes at V-type arrangement of another bushing 5
The upper plane of set 5 is parallel, and upper plane is compared with lower plane closer to the center of back-plate 1
The driving device is the camshaft 2 of air pressure driving, and the driving end of brake-shoe 31 and 32 is provided with idler wheel 8, is rolled
Wheel 8 is resisted against on the cam of camshaft 2.
The cam of camshaft 2 is S-shaped.
The returning device is tension spring 9, and has two, wherein the both ends of a tension spring 9 be connected to brake-shoe 31 and
On the part at 32 close driving end, the both ends of another tension spring 9 are connected to the close driven end of brake-shoe 31 and 32
On part.It is apparent that tension spring 9 can also be three or more, the both ends of tension spring 9 can also be connected to brake-shoe 31 and 32 not lean on
On nearly driving end and the part of driven end.
Pin shaft 6 is cylindrical body pin shaft.Cylindrical body pin shaft have the advantages that structure it is simple, it is easily fabricated, installation.
One end of pin shaft 6 is provided with card slot, and two pin shafts 6 pass through the trapezoidal locking plate that is stuck in its card slot and between the two
7 is fixed with back-plate 1, and the trapezoidal locking plate 7 is fixed by fixing piece and back-plate 1.Such fixing structure for pin shaft has knot
Structure is simple, is easily installed and fixes reliable advantage
The one end close to each other for the plane that two of bushing 5 arrange at V-type is connected by an arc surface.Such arc surface
Transition structure can make bushing under the premise of meeting required function, wall thickness relatively more evenly, thus avoid manufacture and use when answer
Power is concentrated.
Preferably, the one end of the plane that two of bushing 5 arrange at V-type being located remotely from each other passes through symmetrical two sections of arc surfaces
Connection.Such structure makes have ideal activity space between bushing and the two sides of pin shaft, and brake-shoe can be smooth floating in pin shaft two sides
It is dynamic, so that the friction plate in braking on two brake-shoes can reach ideal overlapping effect with brake drum.
The working principle of double hoof overlapping plane overlapping motion stops of the present embodiment are as follows: when needing to brake, first by driving
The driving end of dynamic device driving brake-shoe 31 and 32 expands outwardly, at this point, brake-shoe 31 and 32 is in the bushing 5 of its driven end
Pin shaft 6 is turned out, when close to brake-shoe 31 and 32 drive end friction plate 4 and brake drum 0 contact when, each pin shaft 6 with
The planar line in plane that two of respective bush 5 arrange at V-type contacts, and two of one of bushing 5 are at V-type cloth
The center of back-plate 1 is directed toward in the extension direction of upper plane in the plane set, two of another bushing 5 are at V-type arrangement
Lower plane in plane is parallel with the upper plane of first bushing 5, at this point, the brake-shoe 31 as the first neck hoof is in suffered friction
Power f1Under the action of drive its driven end radially outward to press to brake drum 0 along back-plate 1, it is folded to play brake-shoe and brake drum
The effect of conjunction makes the friction plate close to the first neck hoof driving end press tighter with brake drum；Brake-shoe 32 as the second neck hoof
The frictional force f being subject to2Keep the second neck hoof whole and presses to braking along the direction parallel but opposite with the first neck hoof radial motion direction
Drum, when on the second neck hoof driven end friction plate and brake drum contact after, the second frictional force for being subject to of neck hoof driven end and
Resulting moment of friction further makes the friction plate on entire second neck hoof overlap and press tighter completely with brake drum,
To keep friction disc wear more uniform, and bigger braking moment is generated to brake drum, while eliminating due to friction plate office
Portion friction caused by braking hair gnaw, the problem that noise is big.When vehicle wheel rotation contrary (as moved backward), working principle is same
On；When needing to release braking, the driving force to brake-shoe driving end is released by driving device first, at this time returning in returning device
Under the action of the power of position, the driving end of brake-shoe and driven end are to rapidly return back to implement the initial position before braking, to solve
As return it is unsmooth caused by sticking of brakes problem.
It is apparent that whole embodiments of above-described embodiment and non-present invention, under the premise of not departing from its technological essence,
Many simple changes can also be made, such as the driving device is replaced with the voussoir of air pressure driving by the camshaft that air pressure drives,
Or the crank mechanism or two-way hydraulic cylinder etc. of air pressure driving；The returning device replaces with suitable elastic material by tension spring and draws
Item or mechanical structure with return effect；Cylindrical body pin shaft replaces with the pin shaft of other shapes；Locking plate replaces with other structures,
And so on, details are not described herein again.
Therefore the present invention when solving the braking of existing pneumatic drum brake work torque is small, friction disc wear not
Uniformly, braking hair gnaw, the problem that noise is big.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Go out to obtain various change, also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of double hoof overlapping planes overlap motion stops, it is characterised in that: be mounted on the inside of brake drum, including braking bottom
One end of back-plate, institute is arranged in plate, driving device, brake-shoe, friction plate, returning device and pin shaft, the driving device
Stating brake-shoe has two, is fixed with friction plate on the exterior arc surface of every brake-shoe, every brake-shoe have a driving end and one from
Moved end, the driven end of every brake-shoe are fixedly installed a bushing, and the Internal periphery of the bushing includes at least two and arranges at V-type
And the plane axially extending along bushing, two brake-shoes are arranged on back-plate facing with each otherly, every brake-shoe
Driving end is resisted against on the driving part of driving device, and the driven end and back-plate of every brake-shoe are joined by a pin shaft
Knot, the pin shaft pass through the bushing on the driven end of corresponding brake-shoe, and two brake-shoes are by returning device connection, when leaning on
When the friction plate and brake drum at nearly brake-shoe driving end contact, each pin shaft is put down with two of respective bush at what V-type was arranged
Planar line contact in face, and the extension direction of the upper plane in the plane arranged at V-type of two of one of bushing
It is directed toward the center of back-plate, the lower plane in two of another bushing planes at V-type arrangement is upper with first bushing
Plane is parallel, and the upper plane is compared with lower plane closer to the center of back-plate.
2. double hoof overlapping plane according to claim 1 overlaps motion stops, it is characterised in that: the driving device is
The hydraulic shunt pump of the camshaft of air pressure driving or the crank mechanism or hydraulic-driven of the voussoir of air pressure driving or air pressure driving.
3. double hoof overlapping plane according to claim 1 overlaps motion stops, it is characterised in that: the driving device is
The camshaft of air pressure driving, the driving end of the brake-shoe are provided with idler wheel, which is resisted against on the cam of camshaft.
4. overlapping motion stops according to the described in any item double hoof overlapping planes of Claims 2 or 3, it is characterised in that: described
The cam of camshaft is S-shaped.
5. double hoof overlapping plane according to claim 1 overlaps motion stops, it is characterised in that: the driving device is
The driving end of two-way hydraulic cylinder, two brake-shoes is born against in the groove of the driving part at the both ends of two-way hydraulic cylinder.
6. double hoof overlapping plane according to claim 1 overlaps motion stops, it is characterised in that: the returning device is
Tension spring, and at least two, wherein the both ends of a tension spring are connected on the part at close driving end of two brake-shoes,
The both ends of another tension spring are connected on the part of the close driven end of two brake-shoes.
7. double hoof overlapping planes according to claim 1 overlap motion stops, it is characterised in that: the pin shaft is cylinder
Body pin shaft.
8. double hoof overlapping planes according to claim 1 overlap motion stops, it is characterised in that: one end of the pin shaft
It is provided with card slot, two pin shafts are fixed by being stuck in the trapezoidal locking plate in its card slot and between the two with back-plate,
The trapezoidal locking plate is fixed by fixing piece and back-plate.
9. double hoof overlapping planes according to claim 1 overlap motion stops, it is characterised in that: two of the bushing
It is connected at one end close to each other of the plane of V-type arrangement by an arc surface.
10. double hoof overlapping planes according to claim 1 overlap motion stops, it is characterised in that: the two of the bushing
The one end of a plane at V-type arrangement being located remotely from each other is connected by symmetrical two sections of arc surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910639230.5A CN110307272A (en) | 2019-07-16 | 2019-07-16 | Double hoof overlapping planes overlap motion stops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910639230.5A CN110307272A (en) | 2019-07-16 | 2019-07-16 | Double hoof overlapping planes overlap motion stops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110307272A true CN110307272A (en) | 2019-10-08 |
Family
ID=68081339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910639230.5A Pending CN110307272A (en) | 2019-07-16 | 2019-07-16 | Double hoof overlapping planes overlap motion stops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110307272A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115342142A (en) * | 2022-10-14 | 2022-11-15 | 国智科技(河北)股份有限公司 | Plane folding device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201425069Y (en) * | 2009-05-20 | 2010-03-17 | 杨群英 | Precise full-floating drum brake |
| CN102374244A (en) * | 2010-08-24 | 2012-03-14 | 北京停易制动器有限公司 | Drum brake |
| CN102913569A (en) * | 2012-11-02 | 2013-02-06 | 北京中优天顺科技有限公司 | Plane radial movement brake |
| CN210565906U (en) * | 2019-07-16 | 2020-05-19 | 北京天权恒科技有限公司 | Double-shoe superposed plane superposed movement brake |
-
2019
- 2019-07-16 CN CN201910639230.5A patent/CN110307272A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201425069Y (en) * | 2009-05-20 | 2010-03-17 | 杨群英 | Precise full-floating drum brake |
| CN102374244A (en) * | 2010-08-24 | 2012-03-14 | 北京停易制动器有限公司 | Drum brake |
| CN102913569A (en) * | 2012-11-02 | 2013-02-06 | 北京中优天顺科技有限公司 | Plane radial movement brake |
| CN210565906U (en) * | 2019-07-16 | 2020-05-19 | 北京天权恒科技有限公司 | Double-shoe superposed plane superposed movement brake |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115342142A (en) * | 2022-10-14 | 2022-11-15 | 国智科技(河北)股份有限公司 | Plane folding device |
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