CN106594128A - Pressure arm with adjustable lever ratio and pneumatic plate type brake - Google Patents
Pressure arm with adjustable lever ratio and pneumatic plate type brake Download PDFInfo
- Publication number
- CN106594128A CN106594128A CN201611204697.XA CN201611204697A CN106594128A CN 106594128 A CN106594128 A CN 106594128A CN 201611204697 A CN201611204697 A CN 201611204697A CN 106594128 A CN106594128 A CN 106594128A
- Authority
- CN
- China
- Prior art keywords
- arc surface
- pressure arm
- cylinder
- lever ratio
- center
- 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
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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
- 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
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/64—Levers
- F16D2125/645—Levers with variable leverage, e.g. movable fulcrum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2127/00—Auxiliary mechanisms
- F16D2127/08—Self-amplifying or de-amplifying mechanisms
-
- 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
- F16D2129/00—Type of operation source for auxiliary mechanisms
- F16D2129/02—Fluid-pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a pressure arm with an adjustable lever ratio. The pressure arm comprises a stressed part and a spinning part fixed to one end of the stressed part. A ball socket is formed in the other end of the stressed part. The spinning part comprises an inner arc surface and an outer arc surface, the circle center of the inner arc surface and the circle center of the outer arc surface are arranged in an eccentric mode, an included angle alpha is formed between the connection line of the sphere center of the ball socket and the circle center of the outer arc surface and the connection line of the circle center of the outer arc surface and the circle center of the inner arc surface, and the included angle alpha is an obtuse angle. In addition, the invention provides a pneumatic plate type brake comprising the pressure arm. The pressure arm is designed so that the lever ratio of the pressure arm can be subjected to follow-up adjustment, the pressure arm is located in the actuating stroke of an actuating air cylinder, the effect that the braking torque is in the range of the design requirement all the time is guaranteed, and the braking torque is not decreased along with increasing of the actuating stroke of the actuating air cylinder; and meanwhile, as for the pneumatic plate type brake, the braking torque is improved to a great extent under the same rim specification, a whole braking system can provide stable and effective braking torque, and the driving safety of a whole vehicle is guaranteed.
Description
Technical field
The invention belongs to brake technical field, and in particular to the pressure arm of a kind of adjustable lever ratio and with this
The air-pressure disc brake of pressure arm.
Background technology
At present, disk brake has the incomparable advantage of drum brake, and air-pressure disc brake is led in commercial car
The application in domain is also more and more extensive.Air-pressure disc brake stablizes effective braking moment by offer, frictionally piece and braking
Disk contact produce obstruction vehicle wheel rotation torque come realize braking.Pressure arm passes through as the part of force-increasing mechanism most critical
Lever principle carries out the increase on multiple to provide enough braking moments to the input power that cylinder is input into.
Pressure arm is fixed on caliper body by needle bearing, fulcrum cylinder and locating piece, when pressure arm is actuated by cylinder,
Rotation arc surface is clicked through on pressure arm around axle central rotation, the sliding bearing or needle bearing of a low-friction coefficient around
Row is rolled.In maximum travel position, the center of circle can be simultaneously to the left in the pressure arm thrust face circular arc center of circle（Produce brake force）With it is upper
Lower direction respectively produces a displacement.Because there is certain stroke in cylinder actuation, in the range of predetermined stroke, the power output of cylinder
Change procedure is that power output is stable in certain limit in the last period stroke, and the cylinder power output in the range of this is the specified of the cylinder
Power output.As cylinder stroke is continuously increased to limit travel, cylinder power output can quickly be reduced with the increase of stroke.
In the case of the constant pressure arm of lever ratio, the power output that can cause air-pressure disc brake is gradually reduced, so as to cause air pressure
Disk Brake torque is reduced, and causes traffic safety hidden danger.How to reduce and even eliminate in the case of constant lever ratio,
Solve the problems, such as that cylinder power output causes braking moment to reduce with stroke increase, one of exactly present purpose of design.
The content of the invention
The purpose of the present invention is to overcome existing pressure arm lever ratio constant easily so that cylinder power output is led with stroke increase
Cause braking moment to reduce, affect the problem of traffic safety.
For this purpose, the invention provides a kind of pressure arm of adjustable lever ratio, including forced section and it is fixed on the stress
The spinning portion of portion one end, the forced section other end is provided with ball-and-socket, and the spinning portion includes inner arc surface and exterior arc surface, described
The inner arc surface center of circle and the exterior arc surface center of circle are mutually set for the eccentric, the line between the ball-and-socket centre of sphere and the exterior arc surface center of circle with
Line between the exterior arc surface center of circle and the inner arc surface center of circle forms angle α, and the angle α is obtuse angle.
Further, the angle α is 115～135 °.
Further, the ball-and-socket is in the range of 0～50mm of actuating stroke, and the lever ratio adjustable range of pressure arm is 10～
22。
In addition, present invention also offers a kind of air-pressure disc brake, including caliper body, it is fixed on actuating on caliper body
The pressure arm of cylinder, locating piece, fulcrum cylinder, little needle bearing, big needle bearing and adjustable lever ratio of the present invention；
The push rod for actuating cylinder is engaged with the ball-and-socket of pressure arm, and the little needle bearing is arranged around fulcrum cylinder, and is located at
Between inner arc surface and fulcrum cylinder, the locating piece contacts with fulcrum cylinder, and positioned at fulcrum cylinder away from inner arc surface
Side, the big needle bearing around exterior arc surface arrange.
Further, the fulcrum cylinder is arranged concentrically with inner arc surface.
Further, the fulcrum cylinder is arranged concentrically with exterior arc surface.
Compared with prior art, beneficial effects of the present invention：
(1) pressure arm of this adjustable lever ratio that the present invention is provided is by adjustment inner arc surface or the center of circle position of exterior arc surface
Put, make angle α be obtuse angle, you can make pressure arm during cylinder stroke increase is actuated, its lever ratio is continually changing, it is ensured that
Braking moment is all the time in the range of design requirement.
(2) pressure arm of this adjustable lever ratio that the present invention is provided is stepped up by lever ratio, is overcome and is actuated
Cylinder power output during stroke progressively diminishes the trend that the braking moment brought reduces, and makes air-pressure disc brake same
Braking moment has the lifting of larger level under wheel rim specification, and then enables whole brakes to provide stable and effective brake force
Square, it is ensured that the traffic safety of car load.
The present invention is described in further details below with reference to accompanying drawing.
Description of the drawings
Fig. 1 is the structural representation of the pressure arm of the adjustable lever ratio of the present invention.
Fig. 2 is the operation principle schematic diagram of the pressure arm of the adjustable lever ratio of the present invention.
Fig. 3 is the structural representation of air-pressure disc brake of the present invention.
Fig. 4 is that the present invention actuates cylinder power output change trend curve figure.
Fig. 5 is pressure arm lever ratio change trend curve figure of the present invention.
Description of reference numerals：1st, caliper body；2nd, cylinder is actuated；3rd, pressure arm；4th, locating piece；5th, fulcrum cylinder；6th, little rolling
Needle bearing；7th, big needle bearing；31st, forced section；32nd, spinning portion；33rd, exterior arc surface；34th, inner arc surface；35th, ball-and-socket.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As depicted in figs. 1 and 2, a kind of pressure arm of adjustable lever ratio, including the He of forced section 31 are present embodiments provided
The spinning portion 32 of the one end of the forced section 31 is fixed on, the other end of the forced section 31 is provided with ball-and-socket 35, and the spinning portion 32 wraps
Include inner arc surface 34 and exterior arc surface 33, the center of circle O of the inner arc surface 343With the center of circle O of exterior arc surface 332Mutually it is set for the eccentric, it is interior
The center of circle O of arc surface 343With the center of circle O of exterior arc surface 332Decentraction arrange so that the rotation of inner arc surface 34 and exterior arc surface 33
Angle is inconsistent, so as to realize lever ratio reinforcement, the centre of sphere O of the ball-and-socket 351With the center of circle O of exterior arc surface 332Between line O1O2
With the center of circle O of exterior arc surface 332With the center of circle O of inner arc surface 343Between line O2O3Angle α is formed, the angle α is obtuse angle.Should
Pressure arm can not only carry out the amplification in multiple to forced section input power according to the lever ratio of setting, additionally it is possible to make pressure arm thick stick
The interior continuous change in the stroke of pressure arm forced section of bar ratio.
Wherein, as shown in Fig. 2 L is the actuating stroke of the ball-and-socket 35 of the pressure arm, L1 is the spinning portion 32 of pressure arm
Lateral displacement（Produce brake force）, L2 pushes displacement for the spinning portion 32 of pressure arm；In the pressure arm course of work, L1 gets over
Greatly, L2 is less, and its braking effect is more preferably.And the size and angle α and pressure arm lever ratio of L1, L2 are closely related, the present embodiment
In it is preferred, the angle α is 115～135 °；The ball-and-socket 35 of the pressure arm in the range of 0～50mm of actuating stroke, pressure
The adjustable range of arm bar ratio is 10～22.
And the cooperation between the pressure arm and other connection members for convenience, can the inner arc surface 34 arrange with
The mating surface that its connection member matches, the exterior arc surface 33 is arranged and is connected thereto the mating surface that part matches.
In addition, on the basis of the pressure arm of the adjustable lever ratio of above-mentioned offer, as shown in figure 3, the present embodiment is also carried
A kind of air-pressure disc brake, including caliper body 1 are supplied, has been fixed on caliper body 1 and is actuated cylinder 2, locating piece 4, a null circle
The pressure arm 3 of post 5, little needle bearing 6, big needle bearing 7 and adjustable lever ratio of the present invention；It is described to actuate cylinder 2
Push rod be engaged with the ball-and-socket 35 of pressure arm 3, the little needle bearing 6 is arranged around fulcrum cylinder 5, and positioned at inner arc surface
Between 34 and fulcrum cylinder 5, little needle bearing 6 is contacted with inner arc surface 34, and the locating piece 4 contacts with fulcrum cylinder 5, and
Positioned at fulcrum cylinder 5 away from inner arc surface 34 side, locating piece 4 be used for support fulcrum cylinder 5, the big needle bearing 7
Arrange around exterior arc surface 33, big needle bearing 7 is contacted with reference seat, promote reference seat movement.The air-pressure disc brake
The forced section 31 of pressure arm 3 is subjected to displacement in the horizontal direction under the actuating for actuating cylinder 2, so that the spinning 32 of pressure arm 3
Central rotation of the portion around fulcrum cylinder 5.The air-pressure disc brake can be carried out in again according to the lever ratio of setting to input power
Several amplification, there is provided reference seat movement produces the displacement in friction plate thrust direction；In addition, existing as shown in figure 4, actuating cylinder 2
Its power output progressively diminishes in stroke, yet with the center of circle O of inner arc surface 34 of pressure arm in the present embodiment 33With it is cylindrical
The center of circle O of cambered surface 332It is set for the eccentric, the centre of sphere O of ball-and-socket 351With the center of circle O of exterior arc surface 332Between line O1O2With exterior arc surface 33
Center of circle O2With the center of circle O of inner arc surface 343Between line O2O3The angle α of formation is obtuse angle so that pressure arm 3 is actuating cylinder 2
Its lever ratio is stepped up in stroke, as shown in figure 5, so as to overcome the existing cylinder 3 that actuates to export during stroke
Power progressively diminishes the trend that the braking moment brought reduces, it is ensured that braking moment is all the time in the range of design requirement.
Further, fulcrum cylinder described in the present embodiment 5 is arranged concentrically with inner arc surface 34；And according to pressure arm reality
Applicable cases need, and can also be arranged concentrically the fulcrum cylinder 5 and exterior arc surface 33.
In sum, the present invention by being designed to pressure arm, its lever ratio can follow-up adjustment, actuating pressure arm
In cylinder actuating stroke, it is ensured that all the time in the range of the design requirement, braking moment is not actuated with actuating cylinder braking moment
The increase of stroke and reduce；Simultaneously air-pressure disc brake braking moment under same wheel rim specification has the lifting of larger level,
Whole brakes is set to provide stable and effective braking moment, it is ensured that the traffic safety of car load.
Exemplified as above is only the illustration to the present invention, does not constitute the restriction to protection scope of the present invention, all
It is that design same or analogous with the present invention is belonged within protection scope of the present invention.
Claims (6)
1. a kind of pressure arm of adjustable lever ratio, including forced section (31) and the spinning of the forced section (31) one end is fixed on
Portion (32), it is characterised in that：Forced section (31) other end is provided with ball-and-socket (35), and the spinning portion (32) is including inner arc surface
(34) and exterior arc surface (33), inner arc surface (34) center of circle and exterior arc surface (33) center of circle are mutually set for the eccentric, the ball
Line between nest (35) centre of sphere and exterior arc surface (33) center of circle and exterior arc surface (33) center of circle and inner arc surface (34) center of circle it
Between line formed angle α, the angle α be obtuse angle.
2. the pressure arm of lever ratio can adjust as claimed in claim 1, it is characterised in that：The angle α is 115～135 °.
3. the pressure arm of lever ratio can adjust as claimed in claim 1, it is characterised in that：The ball-and-socket (35) is in actuating stroke
In the range of 0～50mm, the lever ratio adjustable range of pressure arm is 10～22.
4. a kind of air-pressure disc brake, it is characterised in that：Including caliper body (1), it is fixed on caliper body (1) and actuates cylinder
(2), described in locating piece (4), fulcrum cylinder (5), little needle bearing (6), big needle bearing (7) and any one of claims 1 to 3
Adjustable lever ratio pressure arm (3)；
The push rod for actuating cylinder (2) is engaged with the ball-and-socket (35) of pressure arm (3), and the little needle bearing (6) surround props up
Point cylinder (5) is arranged, and between inner arc surface (34) and fulcrum cylinder (5), the locating piece (4) and fulcrum cylinder (5)
Contact, and positioned at fulcrum cylinder (5) away from inner arc surface (34) side, the big needle bearing (7) is around exterior arc surface
(33) arrange.
5. air-pressure disc brake as claimed in claim 4, it is characterised in that：The fulcrum cylinder (5) and inner arc surface
(34) it is arranged concentrically.
6. air-pressure disc brake as claimed in claim 4, it is characterised in that：The fulcrum cylinder (5) and exterior arc surface
(33) it is arranged concentrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611204697.XA CN106594128A (en) | 2016-12-23 | 2016-12-23 | Pressure arm with adjustable lever ratio and pneumatic plate type brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611204697.XA CN106594128A (en) | 2016-12-23 | 2016-12-23 | Pressure arm with adjustable lever ratio and pneumatic plate type brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106594128A true CN106594128A (en) | 2017-04-26 |
Family
ID=58603356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611204697.XA Pending CN106594128A (en) | 2016-12-23 | 2016-12-23 | Pressure arm with adjustable lever ratio and pneumatic plate type brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594128A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577793A (en) * | 2020-05-27 | 2020-08-25 | 云南夏远新能源发展有限责任公司 | New energy automobile stopper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027853Y (en) * | 2006-11-06 | 2008-02-27 | 武汉元丰汽车零部件有限公司 | Floating pincers type double-push rod barometric disk brake |
| CN104088935A (en) * | 2014-07-25 | 2014-10-08 | 武汉元丰汽车零部件有限公司 | Air pressure disc brake pressure arm with bearing limiting structure |
| CN204127170U (en) * | 2014-07-25 | 2015-01-28 | 武汉元丰汽车零部件有限公司 | The integral caliper air-pressure disc brake of the anti-deflection mechanism of pressure arm |
| CN204186846U (en) * | 2014-10-09 | 2015-03-04 | 武汉元丰汽车零部件有限公司 | With the integral caliper air-pressure disc brake of reference seat circular arc guide structure |
| CN104728312A (en) * | 2015-01-27 | 2015-06-24 | 武汉元丰汽车零部件有限公司 | Integrated clamp pneumatic disc brake of locating block rotation-prevention structure |
| CN206468722U (en) * | 2016-12-23 | 2017-09-05 | 武汉元丰汽车零部件有限公司 | The pressure arm and air-pressure disc brake of adjustable lever ratio |
-
2016
- 2016-12-23 CN CN201611204697.XA patent/CN106594128A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027853Y (en) * | 2006-11-06 | 2008-02-27 | 武汉元丰汽车零部件有限公司 | Floating pincers type double-push rod barometric disk brake |
| CN104088935A (en) * | 2014-07-25 | 2014-10-08 | 武汉元丰汽车零部件有限公司 | Air pressure disc brake pressure arm with bearing limiting structure |
| CN204127170U (en) * | 2014-07-25 | 2015-01-28 | 武汉元丰汽车零部件有限公司 | The integral caliper air-pressure disc brake of the anti-deflection mechanism of pressure arm |
| CN204186846U (en) * | 2014-10-09 | 2015-03-04 | 武汉元丰汽车零部件有限公司 | With the integral caliper air-pressure disc brake of reference seat circular arc guide structure |
| CN104728312A (en) * | 2015-01-27 | 2015-06-24 | 武汉元丰汽车零部件有限公司 | Integrated clamp pneumatic disc brake of locating block rotation-prevention structure |
| CN206468722U (en) * | 2016-12-23 | 2017-09-05 | 武汉元丰汽车零部件有限公司 | The pressure arm and air-pressure disc brake of adjustable lever ratio |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577793A (en) * | 2020-05-27 | 2020-08-25 | 云南夏远新能源发展有限责任公司 | New energy automobile stopper |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |