CN115720612A - Electric hydraulic disc brake - Google Patents
Electric hydraulic disc brake Download PDFInfo
- Publication number
- CN115720612A CN115720612A CN202180045172.9A CN202180045172A CN115720612A CN 115720612 A CN115720612 A CN 115720612A CN 202180045172 A CN202180045172 A CN 202180045172A CN 115720612 A CN115720612 A CN 115720612A
- Authority
- CN
- China
- Prior art keywords
- brake
- spring
- arm
- electro
- arms
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H15/00—Wear-compensating mechanisms, e.g. slack adjusters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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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
- F16D55/224—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 with a common actuating member for the braking members
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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
- F16D65/00—Parts or details
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a balancing device (15) for an electro-hydraulic disc brake, comprising two pivotable vertical brake arms (2, 3), an upper brake arm (4) pivotably connected to one of the vertical brake arms (3), each pivotable brake arm (2, 3) being fastened to a base (11) by means of a pivot (12) mounted in a support (13) of the base, wherein the balancing device (17) comprises a connecting portion (18), the connecting portion (18) comprising a shaft (18 a) connected to one of the pivoting brake arms (2), the shaft (18 a) comprising an engagement means (18 b); a balance portion (19), the balance portion (19) including a first body portion (19 a), a second body portion (19 b), and a spring portion (19 c); wherein the first body part (19 a) is configured to engage in the pivot (12) of the other pivoting brake arm (3), the second body part (19 b) is configured to be connected to an engagement means (18 b) of the connection portion (18), and the spring part (19 c) is configured to connect the first and second body parts (19 a, 19 b).
Description
Technical Field
The present invention relates to a balancing device for a disc brake, and more particularly to a balancing device for allowing a synchronous and symmetrical movement of the brake arms of an electro-hydraulic disc brake.
Background
Disc brakes are widely used in applications suitable for friction braking. Accordingly, disc brakes basically include brake pads that are pressed against a surface of a brake disc to generate friction. The brake pads are mounted on the brake shoes-connected to the clamps or brake arms-which in turn are actuated by pistons to open the brake.
In this type of brake, two vertically oriented brake levers or arms have respective first ends pivotally connected to the base and respective second ends connected by an opening and closing mechanism. Thus, the opening and closing mechanism "closes" and "opens" the brake arm, thereby bringing the brake pad into contact ("closing") or away from ("opening") the brake disc.
This type of brake often has problems associated with the individual tilting of one of the brake arms. In fact, in order to enable the brake to open and close efficiently, it is important to coordinate and synchronize the inclination of the brake arms. Any excessive deflection of one of the brake arms may result in damage, such as irregular pad wear or even brake failure.
Therefore, some solutions have been developed aimed at providing balancing or synchronization of the brake arm oscillation.
Document DE19735127C1 shows a disc brake in which the brake arm is pivotably mounted on the base. The ends of the arms are mounted in a rotational coupling configured to ensure uniform clearance between the brake disc and the brake shoes on the brake arms.
US 2017/0016499 shows a brake device having a spacing assembly that includes a first spacing element and a second spacing element disposed on the brake arm that cooperate to move closer to and away from to maintain the brake arm in a centered position within a centered range.
Although the above-described solutions have some effect in maintaining alignment, there remains a need in the art for a balancing solution that safely, robustly, and effectively maintains alignment of the brake arms, facilitating restoration of balance regardless of the tilt direction of the brake arms.
Disclosure of Invention
Objects of the invention
It is an object of the present invention to provide a balancing device for a disc brake which allows a synchronous and symmetrical movement of the brake arms of an electro-hydraulic disc brake.
Another object of the present invention is to provide a balancing device for a disc brake which is safe, robust and effective.
It is a further object of the present invention to provide a balancing device for a disc brake which is useful for restoring a balance independent of the direction of deflection of the brake arms.
It is a further object of the present invention to provide a balancing device for a disc brake which prevents the brake arms from moving independently of each other.
Another object of the present invention is to provide a balancing device for a disc brake which prevents asymmetric movements of the brake arm.
Brief description of the invention
The invention achieves the above object by means of a balancing device for use in an electro-hydraulic disc brake.
An electro-hydraulic disc brake of this type comprises two pivotable vertical brake arms, an upper arm pivotably connected to one of the vertical brake arms and to a drive system formed by an electro-hydraulic release actuator, a spring brake device and an automatic pad wear adjustment and recovery system, each pivotable arm having a support device (shoe) for a pad and being fixed at its lower end to a base by a pivot mounted on a base support.
The balancing device comprises a connecting portion comprising a shaft connected to one of the pivoting brake arms, the shaft comprising an engagement means; and a balance portion including a first body portion, a second body portion, and a spring portion.
The first body portion is configured to engage a pivot of the other pivoting brake arm, the second body portion is configured to be connected to an engagement means of the connecting portion, and the spring portion is configured to connect the first body portion and the second body portion.
In one embodiment of the invention, the first body portion comprises a plate having a circular bore with an inner diameter sized to receive the diameter of the shaft of the other pivoting brake arm.
In one embodiment of the invention, the second body part comprises a plate with an engagement portion and an adjustment screw, wherein the adjustment screw is connected to an engagement tool of the engagement portion and the connection portion.
The spring portion may comprise at least one spring, wherein in one embodiment of the invention the spring portion comprises a plurality of springs.
Drawings
The invention will be described in more detail below with reference to the accompanying drawings, in which:
fig. 1-is a perspective front view of a disc brake according to the invention;
fig. 2-is a rear view of the disc brake according to the invention, with the release actuator and the spring brake device hidden in the drawing;
fig. 3-is a perspective view of a balancing device according to the invention;
fig. 4-is a side view of a disc brake according to the invention;
fig. 5-is a force diagram according to the invention acting on a disc brake balancing system using a view similar to that shown in fig. 2.
Detailed Description
The present invention will be described below based on the embodiments of the present invention shown in fig. 1 to 5.
Fig. 1 shows a brake disc brake with electrohydraulic actuation 1, wherein the brake disc is omitted for better visualization. The brake 1 comprises two pivotable vertical brake arms 2, 3, an upper arm 4, the upper arm 4 being pivotably connected to one of the vertical brake arms 3 and a drive system formed by a release actuator 5, a spring brake device 6 and an automatic pad wear adjustment and recovery device 7. The support means (brake shoes) 8 of the pads 9 are fixed to the brake arms 2, 3 on the shaft 10. The lower ends of the pivotable vertical brake arms 2, 3 are pivotably mounted to the base 11 by means of pivots 12 mounted on supports 13 of the base 11.
The main components and operation of this type of brake are well known to those skilled in the art, and therefore the present disclosure will focus on aspects that will help to better understand the description of the balancing system solution.
Fig. 2 shows a rear view of the brake according to the invention, excluding the release actuator 5 and the spring brake means 6.
The brake according to the invention also comprises balancing means 17 for allowing synchronous and symmetrical movement of the electro-hydraulic brake arms.
As shown in fig. 3 and 4, the balancing device 17 includes a connecting portion 18 and a balancing portion 19.
The connecting portion 18 preferably comprises a shaft 18a, the end of which has an engagement means 18b for engagement with the balance. Shaft 18 is connected to pivot arm 3.
As best shown in fig. e, the balance 19 includes a first body portion 19, a second body portion 19b, and a spring portion 19c.
The first body portion 19a is configured to engage the pivot shaft 12 of one of the pivoting brake arms 3. Thus, in the embodiment shown in the figures, the first body portion 19a comprises a plate having a circular bore 19d, the inner diameter of the circular bore 19d being dimensioned to accommodate the diameter of the shaft 12.
The second body part 19b comprises a plate with a fitting part 19e in the form of a cylindrical part, which fitting part 19e accommodates an adjustment screw 19f. The adjusting screw 19f is connected to the cylindrical portion 19e and to the engagement tool 18b of the connecting portion 18.
The spring portion 19c comprises at least one spring 20 connecting the first and second body portions 19a, 19 b. In fig. 3, the spring portion 19c includes two springs.
The balancing device 17 of the present invention serves to balance the pivotable vertical brake arms 2, 3, thereby preventing one of the brake arms from moving out of synchronism with the other arm.
Thus, when the arm 3 is deflected out of synchronism with the arm 2, the spring or springs 30 of the spring portion 19c serve to limit the movement of the arm, thereby returning it to the synchronous position.
For this purpose, the balancing device is adjusted by turning the adjusting screw 19f, as described below on the basis of fig. 5, wherein:
f1 is the force exerted by the actuator 5 on the upper arm 4 for opening the brake and for opposing the force F2 of the brake spring 6;
f2 is the force of the brake spring 6 acting on the upper arm 4, the upper arm 4 transmitting this force to the automatic recovery system 7, the automatic recovery system 7 in turn transmitting the force to the arm 2 (transmitting the same force to the arm 3 by reaction);
f3 is the force exerted by the arm on the shoe 13 of the base 11;
f4 is the vertically projected force F3;
f5 is the horizontally projected force F3;
f6 is the force of the spring 19 adjusted by the adjustment screw 19F;
f7 is the force of the vertical projection F6; and
f8 is the horizontally projected force F6.
The brake balancing device according to the invention is adjusted by the thruster opening the brake so that the forces F1 and F2 are active. The adjusting screw 19F is adjusted until the force F6 of at least one spring of the spring portion 19c has a value such that when the force F6 (force F8) is projected horizontally it is equal to the force F3 (force F5) projected horizontally, thus ensuring a symmetrical opening of the brake arm with respect to the brake disc.
Having described examples of exemplary embodiments of the invention, it is to be understood that the scope of the invention encompasses other possible variations of the inventive concept described, being limited only by the contents of the appended claims, including the possible equivalents thereof.
Claims (4)
1. An electro-hydraulic disc brake comprising two pivotable vertical brake arms (2, 3), an upper arm (4) pivotably connected to one of the vertical brake arms (3) and to a drive system formed by an electro-hydraulic release thruster (5), a spring brake device (6) and an automatic pad wear adjustment and recovery system (7), each pivotable brake arm (2, 3) having a support device (9) for a brake pad (10) and being fixed to a base by a pivot (12) mounted on a support (13) of the base (11), characterized in that it comprises a balancing device (17), the balancing device (17) comprising:
a connection portion (18), the connection portion (18) comprising a shaft (18 a) connected to one of the pivoting brake arms (2), the shaft (18 a) comprising an engagement means (18 b); and a balance portion (19), the balance portion (19) comprising a first body portion (19 a), a second body portion (19 b), and a spring portion (19 c);
wherein the first body part (19 a) is configured to engage the pivot (12) of the other pivoting brake arm (3), the second body part (19 b) is configured to be connected to the engagement means (18 b) of the connection portion (18), and the spring part (19 c) is configured to connect the first and second body parts (19 a, 19 b).
2. The electro-hydraulic disc brake of claim 1, wherein the first body portion (19 a) comprises a plate having a circular hole (19 d) with an inner diameter dimensioned to accommodate the diameter of the shaft (12) of the other pivoting brake arm (3).
3. The electro-hydraulic disc brake of claim 1 or 2, wherein the second body portion (19 b) comprises a plate having an engagement portion (19 e) and an adjustment screw (19 f), wherein the adjustment screw (19 f) is connected to the engagement portion (19 e) and the engagement means (18 b) of the connecting portion (18).
4. The electro-hydraulic disc brake of any one of claims 1-3, wherein the spring portion (19 c) comprises a plurality of springs (20).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR102020008271-0A BR102020008271A2 (en) | 2020-04-24 | 2020-04-24 | ELECTRO-HYDRAULIC DISC BRAKE |
| BRBR1020200082710 | 2020-04-24 | ||
| PCT/BR2021/050170 WO2021212197A1 (en) | 2020-04-24 | 2021-04-23 | Electro-hydraulic disc brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115720612A true CN115720612A (en) | 2023-02-28 |
Family
ID=78270856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180045172.9A Pending CN115720612A (en) | 2020-04-24 | 2021-04-23 | Electric hydraulic disc brake |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN115720612A (en) |
| BR (1) | BR102020008271A2 (en) |
| WO (1) | WO2021212197A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4393962A (en) * | 1981-03-05 | 1983-07-19 | Jacob Kobelt | Self-centering device for caliper brake assembly |
| FR2631600B1 (en) * | 1988-05-18 | 1990-07-13 | Alsthom Creusot Rail | DEVICE FOR BRAKING AN AXLE ELASTICALLY CONNECTED TO A CHASSIS |
| DE19609764C2 (en) * | 1995-06-16 | 1998-02-19 | Bubenzer Gerhard Bremsen | Brake designed as a disc or drum brake for installation in drives in industrial plants, cable car drives and the like. the like |
| JPH1137186A (en) * | 1997-07-23 | 1999-02-09 | Nippon Aikiyan Kk | Disk braking device |
| DE19735127C1 (en) * | 1997-08-13 | 1999-03-11 | Emde Siegerland Bremsen | Disc brake |
| WO2011095423A1 (en) * | 2010-02-02 | 2011-08-11 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Plunger rod adjuster for compact brake caliper units, having a screw connection element supported directly on the adjuster housing |
| DE102013114525A1 (en) * | 2013-12-19 | 2015-06-25 | Pintsch Bubenzer Gmbh | Stop arrangement and braking device with such |
| JP6543149B2 (en) * | 2015-09-25 | 2019-07-10 | Ｋｙｂ株式会社 | Brake device |
| BR202016002704Y1 (en) * | 2016-02-05 | 2021-08-31 | Vulkan Do Brasil Ltda | SELF-BALANCED ELECTROMAGNETIC BRAKE SYSTEM |
-
2020
- 2020-04-24 BR BR102020008271-0A patent/BR102020008271A2/en unknown
-
2021
- 2021-04-23 WO PCT/BR2021/050170 patent/WO2021212197A1/en active Application Filing
- 2021-04-23 CN CN202180045172.9A patent/CN115720612A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BR102020008271A2 (en) | 2021-11-09 |
| WO2021212197A1 (en) | 2021-10-28 |
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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 |