CN2176946Y - Brake gap automatic adjusting arm of pneumatic braking car - Google Patents

Brake gap automatic adjusting arm of pneumatic braking car Download PDF

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Publication number
CN2176946Y
CN2176946Y CN 93222582 CN93222582U CN2176946Y CN 2176946 Y CN2176946 Y CN 2176946Y CN 93222582 CN93222582 CN 93222582 CN 93222582 U CN93222582 U CN 93222582U CN 2176946 Y CN2176946 Y CN 2176946Y
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CN
China
Prior art keywords
adjusting arm
ratchet
brake gap
automatic adjusting
pneumatic braking
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.)
Expired - Fee Related
Application number
CN 93222582
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Chinese (zh)
Inventor
蔡富旗
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Individual
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Individual
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Filing date
Publication date
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Priority to CN 93222582 priority Critical patent/CN2176946Y/en
Application granted granted Critical
Publication of CN2176946Y publication Critical patent/CN2176946Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a brake gap automatic adjusting arm of a pneumatic braking car, which is primarily improved on the foundation of the existing adjusting arm of worm wheels and worm poles. The brake gap automatic adjusting arm of the pneumatic braking car adds a set of ratchet mechanism, making the adjusting arm can automatically adjust the brake gap according to the wearing capacity of a friction sheet in the course of running. The brake gap automatic adjusting arm of the pneumatic braking car can ensure that the car doesn't swing tail and sideslip when braking. The brake gap automatic adjusting arm of the pneumatic braking car has the advantages of equality, steadiness, safety and reliability.

Description

Brake gap automatic adjusting arm of pneumatic braking car
The utility model relates to the vehicle brake technology field.
Present air braking vehicle in use because the wearing and tearing of friction lining, brake clearance usually changes, and influence braking performance of automobile, and is excessive as brake clearance, and stopping distance is increased, and will prolong the delay time of braking; If same axle two-wheeled brake clearance difference will make the two-wheel braking force irregular, sideslip takes place when making automobile brake, the phenomenon of wagging the tail influences traffic safety.The adjusting arm of used worm gear, worm couple mechanism can not reach the automatic compensation brake clearance.
The purpose of this utility model provide a kind of can be in the air braking vehicle driving process, according to the abrasion loss of each ferrodo, the automatic compensation brake clearance makes the brake clearance of each wheel all keep within the limits prescribed arm for automatically regulating clearance of brake.
The purpose of this utility model is realized by following technical scheme:
This automatic compensation arm is improved on existing worm gear, worm couple institutional adjustment arm basis and is formed.It comprises air chamber push rod (1), adjusting arm (2), worm screw (3), worm gear (4); It is characterized in that it also comprises: jaw (5), it is the tail end lengthening part of air chamber push rod; Connecting rod (6), the one end flexibly connects mutually with jaw 5 tail ends, and the other end links to each other with tooth bar 7; Tooth bar (7), the one end is connected with connecting rod (6), and the other end is meshed with a ratchet (8); Ratchet (8) cover is associated on the worm screw (4); Torsion spring (9) is fixedly arranged between ratchet and the worm screw; Place on the adjusting arm sidewall, movable ratchet (10) cooperates with ratchet, utmost point spring (11) by cramping between tooth bar and adjusting arm sidewall.
In running car, friction disc wear, when brake clearance is excessive, the lengthening of air chamber push rod (1) part, promptly jaw (5) is with drivening rod (6), driving tooth bar (7) again moves, since the effect of braking force, worm gear, worm couple gearing friction resistance is bigger, so tooth bar moves and just drives ratchet (8) and rotate and reverse torsion spring (9), when braking discharges, tooth bar (7) moves down, and ratchet (8) can not turn round under the effect of movable ratchet (10), at this moment, worm gear, worm couple reduces friction drag because of braking discharges, and under the effect of torsion spring (9), worm screw is rotated, the rotation of drive worm gear, thus realize the automatic compensation brake clearance.
Owing to added ratchet, detent mechanism, make to remain brake clearance energy automatic compensation within the limits prescribed that make traffic safety, reliable, and this mechanism is simple, cost is low, easily makes, and must popularize.
Be illustrated below in conjunction with drawings and Examples:
Fig. 1 is the utility model overall structure scheme drawing;
Fig. 2 is figure A-A view.
As shown in Figure 1 and Figure 2, it comprises air chamber push rod 1, adjusting arm 2, worm screw 3, worm gear 4, at the pin jointed end of air chamber push rod 1 with adjusting arm 2, air chamber push rod 1 continuity added grow some, it is jaw 5, the tail end of jaw 5 is hinged mutually with an end of a connecting rod 6, the other end of connecting rod 6 is hinged mutually with a tooth bar 7, tooth bar 7 stretches in adjusting arm 2 chambeies, the ratchet 8 that is associated on the worm screw 4 with cover is meshed, one movable ratchet 10 is placed on the sidewall of adjusting arm, touches mutually with ratchet 8 and closes, and cramping an arc utmost point spring 11 between tooth bar and adjusting arm.When running car uses, work as friction disc wear, when brake clearance is excessive, jaw 5 is with drivening rod 6, driving tooth bar 7 again moves up, because the effect of braking force, worm gear, worm couple gearing friction resistance is bigger, so tooth bar will drive ratchet 8 and make torsion spring 9 turn over an angle, when braking discharges, tooth bar 7 moves down, and ratchet 8 can not turn round under the effect of movable ratchet 10, and this moment, worm gear, worm couple reduces friction drag because of braking discharges, under the effect of torsion spring 9, worm screw is rotated, and drives the worm gear rotation, drive the actuating unit action again, thereby realize the automatic compensation brake clearance, because tooth bar, the opening tooth pitch of ratchet is certain, and the angle that torsion spring reverses also is certain, so drive worm screw, the angle that worm gear rotates all is certain, has guaranteed that then the actuating unit adjusting play can be controlled in certain scope.

Claims (1)

1, a kind of air braking vehicle arm for automatically regulating clearance of brake, comprise air chamber push rod (1), adjusting arm (2), worm screw (3), worm gear (4), it is characterized in that: tail end in air chamber push rod (1), promptly with the pin jointed end of adjusting arm (2), one lengthening being arranged partly--jaw (5) is used for connecting a connecting rod (6); Connecting rod (6) one ends flexibly connect mutually with jaw (5), and the other end flexibly connects mutually with a tooth bar (7); Tooth bar (7) stretches in the adjusting arm, and an end links to each other with connecting rod (6), and the other end is meshed with a ratchet (8); Ratchet (8) cover connection is lived worm screw (4); Between ratchet (8) and worm screw (4), be installed with a torsion spring (9); On the wall of adjusting arm (2), there is a ratchet (10) to match with ratchet (8); Between the wall of tooth bar (7) and adjusting arm (2), be clamped with a utmost point spring (11).
CN 93222582 1993-08-18 1993-08-18 Brake gap automatic adjusting arm of pneumatic braking car Expired - Fee Related CN2176946Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93222582 CN2176946Y (en) 1993-08-18 1993-08-18 Brake gap automatic adjusting arm of pneumatic braking car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 93222582 CN2176946Y (en) 1993-08-18 1993-08-18 Brake gap automatic adjusting arm of pneumatic braking car

Publications (1)

Publication Number Publication Date
CN2176946Y true CN2176946Y (en) 1994-09-14

Family

ID=33801131

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 93222582 Expired - Fee Related CN2176946Y (en) 1993-08-18 1993-08-18 Brake gap automatic adjusting arm of pneumatic braking car

Country Status (1)

Country Link
CN (1) CN2176946Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100535472C (en) * 2006-06-07 2009-09-02 韩兆瑞 Automatic regulating arm for automobile braking
CN109281967A (en) * 2018-11-26 2019-01-29 王军 A kind of brake automatic gap adjustment device and drum brake

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100535472C (en) * 2006-06-07 2009-09-02 韩兆瑞 Automatic regulating arm for automobile braking
CN109281967A (en) * 2018-11-26 2019-01-29 王军 A kind of brake automatic gap adjustment device and drum brake
CN109281967B (en) * 2018-11-26 2020-01-07 王军 Automatic brake clearance adjusting device of brake and drum brake

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C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee