CN110242746A - A kind of parking brake - Google Patents
A kind of parking brake Download PDFInfo
- Publication number
- CN110242746A CN110242746A CN201910665697.7A CN201910665697A CN110242746A CN 110242746 A CN110242746 A CN 110242746A CN 201910665697 A CN201910665697 A CN 201910665697A CN 110242746 A CN110242746 A CN 110242746A
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- CN
- China
- Prior art keywords
- braking
- hoof
- brake
- torque arm
- friction
- 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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- 210000000003 hoof Anatomy 0.000 claims abstract description 122
- 230000001105 regulatory effect Effects 0.000 claims description 45
- 230000000694 effects Effects 0.000 claims description 10
- 238000005299 abrasion Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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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
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
- F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
- F16D65/561—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake
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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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/345—Parking lock mechanisms or brakes in the transmission using friction brakes, e.g. a band 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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
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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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
-
- 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
- F16D2125/60—Cables or chains, e.g. Bowden cables
-
- 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
- F16D2125/68—Lever-link mechanisms, e.g. toggles with change of force ratio
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of parking brake, belong to automobile brake technical field.Including parking movement mechanism and brake gear, parking movement mechanism includes push plate, brakes torque arm, torque arm return spring and brake cable mounting hole；Brake gear is additionally provided with friction disc wear rocker compensating gear, ratchet carriage includes sleeve, ratchet is circumferentially with along sleeve, braking neck hoof connector slide fit connecting hole is equipped in the left side of barrel bore, internal thread hole is equipped on the right side of barrel bore, gap adjustment screw is threadedly coupled with the internal thread hole on the right side of barrel bore, the right end of gap adjustment screw is fixedly connected with braking from the left end of hoof connector, the left end of braking neck hoof connector is equipped with the connection structure connecting with braking neck hoof lower end, the right end of braking neck hoof connector and the braking neck hoof connector slide fit connecting hole slide fit connection on the left of barrel bore.It has the characteristics that drag-line transmission efficiency is high, safe and reliable, adjusting friction disc wear gap is timely, accurate.
Description
Technical field
The present invention relates to automobile brake technical fields.
Background technique
Currently, brake majority is built-in drag-line, drag-line transmission efficiency is within the scope of 55%-70%, low efficiency, causes to stay
Cart handle power increases, driver's operating difficulties.Currently, self energizing effort structure brake clearance adjustment structure is divided into two kinds of forms: 1.
Manual regulating device cannot adjust friction disc wear gap in time in this way, lead to brake travel by manually being manually adjusted
The problems such as length, parking handle travel are long, braking is partially soft, crisis driving safety.2. self-checking device of moving backward, reversing automatic adjustment
Device, due to vehicle traveling direction, advance frequency is far longer than reversing number, rubs so self-checking device cannot make up completely
Pad wears bring brake clearance；And reversing self-checking device relies primarily on steel wire completion, substantially meets at braking initial stage
Automatic regulation function, but after long-time use, steel wire there are lack of lubrication and extensibility phenomenon, cause automatic regulation function by
Step failure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of parking brake, it has drag-line transmission efficiency high, safe
Reliably, the features such as friction disc wear gap is timely, accurate is adjusted.
In order to solve the above technical problems, the technical solution used in the present invention is:
A kind of parking brake, including parking movement mechanism and brake gear, brake gear, which includes one, has interior annular
The brake drum of shape rubbing surface, braking neck hoof and braking be symmetrical set on brake backing plate from hoof so that braking neck hoof and
Braking is corresponding from the arcuate friction piece of hoof and the inner circle annular rubbing surface of brake drum, in braking neck hoof and brakes corresponding from hoof
Upper end between position be equipped with supporting pin, supporting pin is fixed on brake backing plate, and parking movement mechanism includes push plate, system
Dynamic torque arm, torque arm return spring and brake cable mounting hole, push plate are slidably connected by lateral slide rail and brake backing plate,
The left end of push plate is connect with braking neck hoof, and braking torque arm is hinged by torque arm pin and push plate, and braking torque arm is located at torque arm pin
Front end insertion braking insert in the hole from the braking torque arm of hoof, braking torque arm be located at torque arm pin rear end be equipped with braking drawing
Position of the braking torque arm between brake cable mounting hole and torque arm pin is arranged in rope mounting hole, one end of torque arm return spring
It sets, the other end is arranged on brake backing plate, and the opposite direction for pulling to brake cable applies pulling force；Brake gear is also set
There is friction disc wear rocker compensating gear, friction disc wear rocker compensating gear includes compensation gap adjustment ratchet structure, friction
It clearance self-regulating shift plate and dials and pulls return spring, compensation gap adjustment ratchet structure includes ratchet carriage, gap adjustment screw, braking
Hoof connector is led, is braked from hoof connector and pawl, ratchet carriage includes sleeve, ratchet is circumferentially with along sleeve, in sleeve
The left side of inner cavity is equipped with braking neck hoof connector slide fit connecting hole, is equipped with internal thread hole, gap adjustment on the right side of barrel bore
Screw rod is threadedly coupled with the internal thread hole on the right side of barrel bore, and the right end of gap adjustment screw and braking are from the left end of hoof connector
It is fixedly connected, brakes from the right end of hoof connector and be equipped with the connection structure connecting with braking from hoof lower end, braking neck hoof connector
Left end be equipped with and the connection structure that connect of braking neck hoof lower end, the right end and the system on the left of barrel bore that hoof connector is led in braking
Dynamic neck hoof connector slide fit connecting hole slide fit connection, friction gap self-regulated shift plate pass through self-regulated shift plate shaft and braking neck hoof rotation
Return spring and brake backing plate elasticity company are pulled by dialling in connection, the top that friction gap self-regulated shift plate is located at self-regulated shift plate shaft
It connects, so that the upper end of friction gap self-regulated shift plate 7 generates pulling force to the right, the ratchet phase with compensation gap adjustment ratchet structure
The bottom of friction gap self-regulated shift plate is arranged in the pawl of cooperation；When parking braking, brake cable pulls braking 19 band of torque arm
Dynamic push plate Slideslip to the left, and the arcuate friction piece of braking neck hoof is pushed to be in contact with brake drum inner circle annular rubbing surface friction production
Raw braking effect pulls on braking torque arm, and braking leads hoof to exert a force brake drum inner circle annular rubbing surface and generates reaction force,
It brakes torque arm to rotate by fulcrum of torque arm pin, the front end for braking torque arm is inserted into hole by braking torque arm and stirs braking from the hoof right side
It moves, so that braking is in contact to rub from the arcuate friction piece of hoof to brake drum inner circle annular rubbing surface generates braking effect；Meanwhile
Friction disc wear rocker compensating gear movement, self-regulated shift plate shaft with braking neck hoof move to the left, self-regulated shift plate shaft to
Left side is mobile and dials and pulls under the action of return spring pulls friction gap self-regulated shift plate upper end to the right, makes friction gap self-regulated
The pawl of shift plate bottom moves down, to drive ratchet to rotate down, when friction plate because wearing clearance increases to gap adjustment
When threshold value, it is more than that a certain degree, the pawl of friction gap self-regulated shift plate bottom is by hook tooth that self-regulated shift plate shaft is mobile to the left
A position is stirred downwards, to make gap adjustment screw because protruding with the internal thread hole relative rotation on the right side of barrel bore
A distance brakes neck hoof and braking from distance between hoof bottom to increase, to generate compensation friction plate because abrasion makes to rub
The effect that gap increases.
The present invention further improvement lies in that:
Dial the right end for pulling return spring and support pin connection.
It is to lead hoof lower end with braking that the right end of braking neck hoof connector, which is equipped with the connection structure connecting with braking neck hoof lower end,
Hoof card slot is led in the compatible braking in portion plate section；It brakes from the right end of hoof connector and is equipped with the company connecting with braking from hoof lower end
Binding structure is to brake from hoof lower end plate section is compatible from hoof card slot with braking.
The beneficial effects of adopting the technical scheme are that
Parking movement mechanism of the present invention is external by brake cable, saves brake inside space, promotes drag-line transmission efficiency
10%, braking ability can be effectively improved, guarantees drive safety.
The self-regulated on braking neck hoof is arranged in by the way that friction disc wear blank compensation apparatus is arranged on the brake in the present invention
The arcuate friction piece and brake drum inner circle annular friction plate of distance and braking neck hoof that shift plate shaft is moved to the left in brake
Gap is positively correlated, and friction disc wear gap is bigger, and the distance that self-regulated shift plate shaft is moved to the left in brake is bigger, is rubbed simultaneously
The pawl of clearance self-regulating shift plate bottom move down distance it is also bigger, when friction plate because wearing clearance increase to gap adjustment threshold value
When, self-regulated shift plate shaft mobile to the left is more than to a certain degree that the pawl of friction gap self-regulated shift plate bottom is downward by hook tooth
Stir a position, thus make gap adjustment screw because with protruding one section of internal thread hole relative rotation on the right side of barrel bore
Distance brakes neck hoof and braking from distance between hoof bottom to increase, equivalent to increase braking neck hoof and braking from it is ungulate at
Diameter of a circle make its gap remained constant for making up the gap after brake friction pad wear with brake drum, guarantee brake
With handle always in effectively controllable range.To generate the effect that compensation friction plate increases friction gap because of abrasion.Begin
The normal clearance for keeping friction plate and brake drum eventually can be achieved with automatically adjusting after friction disc wear by direction of advance brake,
Automatic adjustment available energy is improved, ensure that driving safety.It has the characteristics that safe and reliable, adjusting is timely, accurate.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the structural schematic diagram of friction disc wear rocker compensating gear in Fig. 1；
Fig. 4 is the structural schematic diagram that gap adjustment ratchet structure is compensated in Fig. 3；
Fig. 5 is the left view of Fig. 4.
In the accompanying drawings: 1. brake drums；2. brake backing plate；3. braking neck hoof；4. braking from hoof；5. supporting pin；6. hydraulic
Wheel cylinder；7. friction gap self-regulated shift plate；8. group pulling return spring；9. gap adjustment screw；10. braking neck hoof connector；10-1.
Braking neck hoof card slot；11. braking from hoof connector；11-1. is braked from hoof card slot；12. sleeve；13. ratchet；14. self-regulated shift plate
Shaft；15. lower back-moving spring；16. braking return spring from hoof；17. return spring on braking neck hoof；18. push plate；19. system
Dynamic torque arm；20. torque arm return spring；21. brake cable mounting hole；22. torque arm pin；23. brake cable.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be described in further detail.
The embodiment as shown in Fig. 1-5 is it is found that the present embodiment includes parking movement mechanism and brake gear, brake gear packet
The brake drum 1 with inner circle annular rubbing surface is included, braking neck hoof 3 and braking are symmetrical set from hoof 4 at brake bottom
On plate 2, so that braking neck hoof 3 and braking are corresponding from the arcuate friction piece of hoof 4 and the inner circle annular rubbing surface of brake drum 1,
Braking neck hoof 3 is equipped with supporting pin 5 from the position between the corresponding upper end of hoof 4 with braking, and supporting pin 5 is fixed on brake bottom
On plate 2, parking movement mechanism includes push plate 18, brakes torque arm 19, torque arm return spring 20 and brake cable mounting hole 21, push plate
18 are slidably connected by lateral slide rail with brake backing plate 2, and the left end of push plate 18 is connect with braking neck hoof 3, brake torque arm
19 is hinged by torque arm pin 22 and push plate 18, and braking is inserted into from hoof 4 in the front end that braking torque arm 19 is located at torque arm pin 22
Braking torque arm inserts in the hole, and the rear end that braking torque arm 19 is located at torque arm pin 22 is equipped with brake cable mounting hole 21, and torque arm is returned
Position of the braking torque arm 19 between brake cable mounting hole 21 and torque arm pin 22 is arranged in one end of position spring 20, another
One end is arranged on brake backing plate 2, and the opposite direction for pulling to brake cable applies pulling force；Brake gear is additionally provided with friction
Pad wear rocker compensating gear, friction disc wear rocker compensating gear include compensation gap adjustment ratchet structure, and friction gap is certainly
It allots plate 7 and dials and pull return spring 8, compensation gap adjustment ratchet structure includes ratchet carriage, gap adjustment screw 9, braking neck
Hoof connector 10 is braked from hoof connector 11 and pawl, and ratchet carriage includes sleeve 12, is circumferentially with ratchet along sleeve 12
13, it is equipped with braking neck hoof connector slide fit connecting hole in the left side of 12 inner cavity of sleeve, is equipped with interior spiral shell on the right side of 12 inner cavity of sleeve
Pit, gap adjustment screw 9 are threadedly coupled with the internal thread hole on the right side of 12 inner cavity of sleeve, the right end and system of gap adjustment screw 9
It is dynamic to be fixedly connected from the left end of hoof connector 11, it brakes to be equipped with from the right end of hoof connector 11 and is connect with braking from 4 lower end of hoof
Connection structure, the left end of braking neck hoof connector 10 are equipped with the connection structure connecting with braking neck 3 lower end of hoof, braking neck hoof connection
The right end of part 10 is connect with the braking neck hoof connector slide fit connecting hole slide fit on the left of 12 inner cavity of sleeve, friction gap self-regulated shift plate
7 are rotatablely connected by self-regulated shift plate shaft 14 and braking neck hoof 3, and friction gap self-regulated shift plate 7 is located at self-regulated shift plate shaft 14
Top by dial pulls return spring 8 and 2 elastic connection of brake backing plate so that the upper end of friction gap self-regulated shift plate 7 generate to
The pulling force on right side, the pawl matched with the ratchet 13 of compensation gap adjustment ratchet structure are arranged in friction gap self-regulated shift plate 7
Bottom；When parking braking, brake cable 23 pulls braking torque arm 19 to drive the Slideslip to the left of push plate 18, and braking is pushed to lead
The arcuate friction piece of hoof 3, which is in contact to rub with 1 inner circle annular rubbing surface of brake drum, generates braking effect, pulls on braking torque arm
19, braking neck hoof 3 exerts a force to 1 inner circle annular rubbing surface of brake drum and generates reaction force, brakes torque arm 19 with torque arm pin 22
It is rotated for fulcrum, the front end for braking torque arm 19 is stirred braking by braking torque arm insertion hole and moved to right from hoof 4, so as to brake from hoof 4
Arcuate friction piece to 1 inner circle annular rubbing surface of brake drum be in contact friction generate braking effect；Meanwhile friction disc wear gap
Compensation mechanism movement, self-regulated shift plate shaft 14 move to the left with braking neck hoof 3, moved to the left in self-regulated shift plate shaft 14 and
It dials and pulls under the action of return spring 8 pulls 7 upper end of friction gap self-regulated shift plate to the right, make 7 bottom of friction gap self-regulated shift plate
The pawl in portion moves down, to drive ratchet 13 to rotate down, when friction plate because wearing clearance increases to gap adjustment threshold value
When, it is more than that a certain degree, the pawl of 7 bottom of friction gap self-regulated shift plate is by ratchet teeth directional that self-regulated shift plate shaft 14 is mobile to the left
Under stir a position, thus make gap adjustment screw 9 because with the internal thread hole relative rotation on the right side of 12 inner cavity of sleeve to overhanging
A distance out brakes neck hoof 3 and braking from distance between 4 bottom of hoof to increase, to generate compensation friction plate because abrasion makes
The effect that friction gap increases.Gap adjustment threshold value is by ratchet wheel space width, self-regulated shift plate shaft above and below braking neck hoof
The distance up and down that distance and self-regulated shift plate shaft are located at friction gap self-regulated shift plate determines.I.e. by adjusting above-mentioned parameter, that is, adjustable
Whole threshold value, so as to adjust the sensitivity of friction disc wear backlash compensation.
It dials and pulls the right end of return spring 8 and connect with supporting pin 5.
It is to lead hoof 3 with braking that the right end of braking neck hoof connector 10, which is equipped with the connection structure connecting with braking neck 3 lower end of hoof,
Hoof card slot 10-1 is led in the compatible braking in lower end plate section；Braking is equipped with braking under hoof 4 from the right end of hoof connector 11
The connection structure of end connection is to brake from 4 lower end plate section of hoof is compatible from hoof card slot 11-1 with braking.
Claims (3)
1. a kind of parking brake, including parking movement mechanism and brake gear, the brake gear, which includes one, has inner circle
The brake drum (1) in annular friction face, braking neck hoof (3) and braking are symmetrical set on brake backing plate (2) from hoof (4),
So that the inner circle annular rubbing surface phase of the arcuate friction piece and brake drum (1) of braking neck hoof (3) and the braking from hoof (4)
It is corresponding, it is described in braking neck hoof (3) and braking from the position between hoof (4) corresponding upper end equipped with supporting pin (5)
Supporting pin (5) is fixed on the brake backing plate (2), it is characterised in that: the parking movement mechanism includes push plate (18), system
Dynamic torque arm (19), torque arm return spring (20) and brake cable mounting hole (21), the push plate (18) pass through lateral slide rail
It is slidably connected with the brake backing plate (2), the left end of the push plate (18) is connect with braking neck hoof (3), the braking
Hingedly by torque arm pin (22) and the push plate (18), braking torque arm (19) is located at torque arm pin (22) for torque arm (19)
The insertion braking in front end inserts in the hole from the braking torque arm of hoof (4), and the braking torque arm (19) is located at torque arm pin (22)
Rear end be equipped with brake cable mounting hole (21), one end of the torque arm return spring (20) is arranged in the braking torque arm
(19) position between the brake cable mounting hole (21) and the torque arm pin (22), the other end are arranged described
On brake backing plate (2), the opposite direction for pulling to brake cable applies pulling force；The brake gear is additionally provided with friction plate mill
Rocker compensating gear is damaged, the friction disc wear rocker compensating gear includes compensation gap adjustment ratchet structure, and friction gap is certainly
It allots plate (7) and dials and pull return spring (8), the compensation gap adjustment ratchet structure includes ratchet carriage, gap adjustment screw
(9), braking neck hoof connector (10) is braked from hoof connector (11) and pawl, and the ratchet carriage includes sleeve (12), along institute
That states sleeve (12) is circumferentially with ratchet (13), is equipped with braking neck hoof connector slide fit in the left side of the sleeve (12) inner cavity and connects
Hole is connect, is equipped with internal thread hole on the right side of the sleeve (12) inner cavity, the gap adjustment screw (9) and the sleeve (12) are interior
Internal thread hole on the right side of chamber is threadedly coupled, and the right end of the gap adjustment screw (9) is braked with described from hoof connector (11)
Left end is fixedly connected, and the braking is equipped with and the connection braked and connect from hoof (4) lower end from the right end of hoof connector (11)
Structure, the left end of braking neck hoof connector (10) is equipped with the connection structure connecting with braking neck hoof (3) lower end, described
Hoof connector slide fit connecting hole slide fit is led in the right end of braking neck hoof connector (10) and the braking on the left of the sleeve (12) inner cavity
Connection, the friction gap self-regulated shift plate (7) pass through self-regulated shift plate shaft (14) and braking neck hoof (3) rotation connection, institute
State friction gap self-regulated shift plate (7) be located at the top of the self-regulated shift plate shaft (14) by dial pull return spring (8) with it is described
Brake backing plate (2) elastic connection, so that the upper end of the friction gap self-regulated shift plate (7) generates pulling force to the right, with institute
The pawl that matches of ratchet (13) for stating compensation gap adjustment ratchet structure is arranged at the bottom of the friction gap self-regulated shift plate (7)
Portion；When parking braking, brake cable (23) pulls the braking torque arm (19) to drive the push plate (18) Slideslip to the left, and
Push it is described braking neck hoof (3) arcuate friction piece be in contact with the brake drum (1) inner circle annular rubbing surface friction generate make
Dynamic effect pulls on the braking torque arm (19), and braking neck hoof (3) is to the brake drum (1) inner circle annular rubbing surface
It exerts a force and generates reaction force, the braking torque arm (19) is fulcrum rotation, the braking torque arm with the torque arm pin (22)
(19) front end is stirred the braking by braking torque arm insertion hole and is moved to right from hoof (4), so that described brake from hoof (4)
Arcuate friction piece, which is in contact to the brake drum (1) inner circle annular rubbing surface to rub, generates braking effect；Meanwhile the friction plate
Wearing clearance compensation mechanism movement, the self-regulated shift plate shaft (14) with the braking neck hoof (3) move to the left, it is described oneself
Allot plate shaft (14) move to the left and described group pull return spring (8) by the friction gap self-regulated shift plate (7) upper end to
Under the action of right side pulls, move down the pawl of friction gap self-regulated shift plate (7) bottom, to drive the ratchet
(13) it rotates down, when friction plate increases to gap adjustment threshold value because of wearing clearance, the self-regulated shift plate shaft (14) is to the left
It is more than to a certain degree that the hook tooth is stirred downwards one by the pawl of friction gap self-regulated shift plate (7) bottom that side is mobile
Position, to make the gap adjustment screw (9) because outside with the internal thread hole relative rotation on the right side of the sleeve (12) inner cavity
A distance is stretched out, to increase braking neck hoof (3) and the braking from distance between hoof (4) bottom, to generate compensation
The effect that friction plate increases friction gap because of abrasion.
2. a kind of parking brake according to claim 1, it is characterised in that: the described group of right end for pulling return spring (8)
It is connect with the supporting pin (5).
3. a kind of parking brake according to claim 1 or 2, it is characterised in that: hoof connector (10) are led in the braking
Right end be equipped with the connection structure that connect of braking neck hoof (3) lower end and be and braking neck hoof (3) lower end plate section
Hoof card slot (10-1) is led in compatible braking；The braking is equipped with from the right end of hoof connector (11) and brakes with described from hoof (4)
The connection structure of lower end connection is to brake from hoof (4) lower end plate section is compatible from hoof card slot (11- with the braking
1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910665697.7A CN110242746A (en) | 2019-07-23 | 2019-07-23 | A kind of parking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910665697.7A CN110242746A (en) | 2019-07-23 | 2019-07-23 | A kind of parking brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110242746A true CN110242746A (en) | 2019-09-17 |
Family
ID=67893245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910665697.7A Pending CN110242746A (en) | 2019-07-23 | 2019-07-23 | A kind of parking brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110242746A (en) |
Citations (9)
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|---|---|---|---|---|
| KR20040098445A (en) * | 2003-05-15 | 2004-11-20 | 주식회사 만도 | Adjuster for drum brake |
| CN101949419A (en) * | 2010-09-28 | 2011-01-19 | 杭州富宏叉车制动器有限公司 | Forklift brake with integral travelling and parking |
| CN103899686A (en) * | 2014-04-22 | 2014-07-02 | 重庆市璧山宏向汽配有限公司 | Arm-pulling type gap self-regulating brake |
| CN204647066U (en) * | 2015-03-03 | 2015-09-16 | 杭州富宏叉车制动器有限公司 | A kind of parking braking assembly |
| CN105179529A (en) * | 2015-10-22 | 2015-12-23 | 安徽江淮汽车股份有限公司 | Parking brake |
| CN108223628A (en) * | 2018-03-15 | 2018-06-29 | 安徽江淮汽车集团股份有限公司 | A kind of parking torque arm structure |
| CN207777483U (en) * | 2018-01-18 | 2018-08-28 | 重庆千幸汽车配件有限公司 | A kind of self-adjusting mechanism assembly |
| CN207814283U (en) * | 2018-01-30 | 2018-09-04 | 山东遨游汽车制动***股份有限公司 | Hydraulic Double servo-type self-regulated drum brake |
| CN210423686U (en) * | 2019-07-23 | 2020-04-28 | 霸州市华诚汽车制动器有限公司 | Parking brake |
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