CN209012306U - A kind of gas brake automatic adjusting arm - Google Patents
A kind of gas brake automatic adjusting arm Download PDFInfo
- Publication number
- CN209012306U CN209012306U CN201821697433.7U CN201821697433U CN209012306U CN 209012306 U CN209012306 U CN 209012306U CN 201821697433 U CN201821697433 U CN 201821697433U CN 209012306 U CN209012306 U CN 209012306U
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- clutch
- worm
- gear
- worm screw
- arm
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Abstract
The utility model relates to a kind of gas brake automatic adjusting arms, including shell and control arm, the shell includes the worm gear for connecting the actuating arm and connection camshaft of air chamber push rod, worm gear connecting worm component, the worm component includes worm screw, worm screw connects first clutch, and sliding sleeve and second clutch are arranged on worm screw, helical gear is connected by swelling spring on the outside of the sliding sleeve, the first clutch engages second clutch, groove is arranged in the second clutch, described sliding sleeve one end is placed in the boss in groove, there are gaps between boss and groove, pressure spring is set between the second clutch and helical gear, it is located at helical gear side pinion mate in the shell, the control arm is set on worm gear, and fixed connection end is arranged in control arm, the control gear engaged with pinion gear is also set up on the control arm, The gas brake automatic adjusting arm can automatic regulating brake gap, and it is convenient to replace brake-shoe, long service life.
Description
Technical field
The utility model relates to processing mold more particularly to a kind of gas brake automatic adjusting arms.
Background technique
It now requires to car, the truck gas brake solar obligation brake automatic adjusting arm newly to dispatch from the factory.Automotive brake
In use since friction plate is constantly worn, the gap between brake-shoe and brake drum is become larger, and influences vehicle
Braking effect.User is required to carry out manual setting to brake clearance at this time.Due to the factors such as road conditions and use habit, friction plate
The degree of wear is different, is not reaching the time required on operation instructions or fare register friction plate has worn out seriously, and
User is still unaware, has brought great hidden danger to traffic safety.Simultaneously because the process for manually adjusting gap is quite cumbersome,
The more difficult independent operation of ordinary user, there are also automatic adjusting arms currently on the market, but there are problems that accelerating brake block loss
With the case where entire automatic adjusting arm is scrapped after the secondary brake-shoe of replacement three
Utility model content
The applicant is directed to disadvantage mentioned above, has carried out Improvement, provides a kind of gas brake automatic adjusting arm.
Technical solution used by the utility model is as follows:
A kind of gas brake automatic adjusting arm, including shell and control arm, the shell include connection air chamber push rod
The worm gear of actuating arm and connection camshaft, worm gear connecting worm component, the worm component includes worm screw, worm screw connection the
One clutch, and sliding sleeve and second clutch are arranged on worm screw connects helical gear by swelling spring on the outside of the sliding sleeve, and described the
Groove is arranged in one clutch engagement second clutch, the second clutch, and described sliding sleeve one end is placed in convex in groove
Platform, there are gaps between boss and groove, and pressure spring is arranged between the second clutch and helical gear, is located in the shell oblique
Gear side pinion mate, the control arm are set on worm gear, and control arm setting fixed connection end, on the control arm
Also set up the control gear engaged with pinion gear.
As a further improvement of the above technical scheme:
The first clutch and worm screw pass through elastic cylinder pin connection.
End cap is also connected on the worm screw, the worm screw is located on the outside of end cap also mating connection hand adjustment hex bolts.
The beneficial effects of the utility model are as follows: the gas brake automatic adjusting arm makes it in the process of moving can
Automatically brake clearance is compensated, remains brake-shoe and brake drum gap width in the reasonable scope, it is ensured that brake
Work normally, at the same eliminate user it is cumbersome manually adjust work, and backlash compensation is reasonable, prevents phenomenon of dawdling, and subtracts
Few user replaces the expense of shoe plate, in addition adjusts the increase of arm service life, decreases user's upkeep cost.
Detailed description of the invention
Fig. 1 is the assembly figure of the gas brake automatic adjusting arm of the utility model.
Fig. 2 is the structural schematic diagram of the gas brake automatic adjusting arm worm component of the utility model.
Fig. 3 is the cross-sectional view at the gas brake automatic adjusting arm control arm of the utility model.
In figure: 1, shell；11, actuating arm；12, worm gear；13, pinion gear；2, worm component；21, worm screw；211, end cap；
212, hand adjustment hex bolts；22, first clutch；23, sliding sleeve；231, boss；24, second clutch；241, groove；25, swollen
Tight spring；26, helical gear；27, pressure spring；28, elastic cylindrical pin；3, control arm；31, fixed connection end；32, gear is controlled.
Specific embodiment
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment
As shown in Figure 1 to Figure 3, the gas brake automatic adjusting arm of the present embodiment, including shell 1 and control arm 3, shell
1 includes the actuating arm 11 of connection air chamber push rod and the worm gear 12 of connection camshaft, 12 mating connection worm component 2 of worm gear, worm screw
Component 2 includes worm screw 21, and worm screw 21 connects first clutch 22 by elastic cylindrical pin 28, is also connected with end cap 211 on worm screw 21,
Worm screw 21 is located at 211 outside of end cap also mating connection hand adjustment hex bolts 212, and sliding sleeve 23 and the second clutch are arranged on worm screw 21
Device 24, connects helical gear 26 by swelling spring 25 on the outside of sliding sleeve 23, and first clutch 22 engages second clutch 24, the second clutch
Groove 241 is arranged in device 24, and 23 one end of sliding sleeve is placed in the boss 231 in groove 241, between boss 231 and groove 241 there are
Gap is arranged pressure spring 27, is located at 26 side pinion mate of helical gear in shell 1 between second clutch 24 and helical gear 26
13, control arm 3 is set on worm gear 12, and fixed connection end 31 is arranged in control arm 3, also sets up and pinion gear 13 on control arm 3
The control gear 32 of engagement.
For the gas brake automatic adjusting arm in use, actuating arm 11 is connected air chamber push rod, worm gear 12 connects cam
The fixed connection end 31 of axis, the control arm 3 is fixedly connected, and guarantees that control arm 3 does not rotate, when needing to brake under normal circumstances,
Air chamber push rod drives shell 1 to rotate counterclockwise certain angle (such as 10 °), and shell 1, which rotates counterclockwise, drives worm gear 12 to turn counterclockwise
Dynamic certain angle (10 °), the rotation of worm gear 12 can move camshaft and turn over respective angles, realize and brake, after end of braking, gas chamber
Push rod drives shell 1 to reset, same that worm gear 12 and camshaft is driven to rotate clockwise (10 °) resets, that is, releases braking, work as braking
Gap becomes larger, and in order to realize braking, then the distance that air chamber push rod is released increases, and shell 1 and worm gear 12 rotate counterclockwise angle angle
Degree is same to be increased (such as 12 ° of rotation) after end of braking, and air chamber push rod drives shell 1 to rotate clockwise reset, is mounted in shell 1
Pinion gear 13 moved with shell 1, and due to the control gear 32 of pinion gear 13 and control arm 3 engage, control gear 32
Fixed with control arm 3, so pinion gear 13 also rotates clockwise, pinion gear 13, which rotates clockwise, can drive its engagement
Helical gear 26 be rotated up, helical gear 26 is rotated up, drive swelling spring 25 upwards rotate, swelling spring 25 upwards rotation can embrace
Tight sliding sleeve 23, is rotated up sliding sleeve 23 also with helical gear 26, since the distance that air chamber push rod is released increases, the return of shell 1
Angle also increases, and 23 rotational angle of sliding sleeve increases, and overcomes the gap between groove 241 and boss 231, can pass through 23 band of sliding sleeve
Dynamic second clutch 24 is rotated up；Due to 22 connecting worm 21 of first clutch, and worm screw 21 engages with worm gear 12, shell 1
Rotating clockwise reset will drive that worm gear 12 is same to be resetted clockwise, worm gear 12 rotate counterclockwise will drive worm screw 21 and first from
Clutch 22 rotates down, first clutch 22 and 24 relative motion of second clutch, will cause first clutch 22 and second from
Clutch 24 jumps tooth, and the, which will cause 12 return angle of worm gear, reduces (only 10 ° of return), when braking next time, mentions equal to worm gear 12
Before have rotated certain angle (2 °), 12 need of worm gear produce (10 °) when being braked, and can be completed braking, and realize brake cabin
Gap automatic adjustment, the distance that air chamber push rod is released can be returned to initial release value；When carrying out replacement brake pad replacing, operator
Member is stopped by tool card adjusts hex bolts 212, cooperates hand adjustment hex bolts 212 that worm screw 21 is driven to be rotated up by tool,
Worm screw 21 drives first clutch 22 to rotate down, and first clutch 22 drives second clutch 24 to rotate down, the second clutch
Device 24 cooperates boss 231 that sliding sleeve 23 is driven to rotate down by groove 241, and when sliding sleeve 23 rotates down, swelling spring 25 is opened at this time
It opens, helical gear 26 remains stationary, and worm screw 21 is freely rotated, and worm gear 12 can be driven to rotate by worm screw 21, and the rotation of worm gear 12 is
It can drive cam axle, increase brake clearance, can carry out brake pad replacing, when replacement is not in beat tooth, phenomenon of dawdling,
Improve the service life of gas brake automatic adjusting arm.
Above description is the explanation to the utility model, is not the restriction to utility model, defined by the utility model
Range is referring to claim, and without prejudice to the basic structure of the utility model, the utility model can make any shape
The modification of formula.
Claims (3)
1. a kind of gas brake automatic adjusting arm, it is characterised in that: including shell (1) and control arm (3), the shell (1)
Including connecting the actuating arm (11) of air chamber push rod and connecting the worm gear (12) of camshaft, worm gear (12) mating connection worm component
(2), the worm component (2) includes worm screw (21), and worm screw (21) connects first clutch (22), and is arranged cunning on worm screw (21)
(23) and second clutch (24) are covered, passes through swelling spring (25) on the outside of the sliding sleeve (23) and connects helical gear (26), described first
Clutch (22) engages second clutch (24), and groove (241) are arranged in the second clutch (24), described sliding sleeve (23) one end
The boss (231) being set in groove (241), there are gap, the second clutches between boss (231) and groove (241)
(24) pressure spring (27) are set between helical gear (26), helical gear (26) side pinion mate is located in the shell (1)
(13), the control arm (3) is set on worm gear (12), and control arm (3) setting fixed connection end (31), the control arm
(3) the control gear (32) engaged with pinion gear (13) is also set up on.
2. gas brake automatic adjusting arm according to claim 1, it is characterised in that: the first clutch (22) with
Worm screw (21) is connected by elastic cylindrical pin (28).
3. gas brake automatic adjusting arm according to claim 1, it is characterised in that: be also connected on the worm screw (21)
End cap (211), the worm screw (21) are located on the outside of end cap (211) also mating connection hand adjustment hex bolts (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821697433.7U CN209012306U (en) | 2018-10-19 | 2018-10-19 | A kind of gas brake automatic adjusting arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821697433.7U CN209012306U (en) | 2018-10-19 | 2018-10-19 | A kind of gas brake automatic adjusting arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209012306U true CN209012306U (en) | 2019-06-21 |
Family
ID=66839188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821697433.7U Active CN209012306U (en) | 2018-10-19 | 2018-10-19 | A kind of gas brake automatic adjusting arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209012306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999900A (en) * | 2018-10-19 | 2018-12-14 | 无锡晶华汽车制动器有限公司 | A kind of gas brake automatic adjusting arm |
-
2018
- 2018-10-19 CN CN201821697433.7U patent/CN209012306U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999900A (en) * | 2018-10-19 | 2018-12-14 | 无锡晶华汽车制动器有限公司 | A kind of gas brake automatic adjusting arm |
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