CN210423522U - Brake - Google Patents
Brake Download PDFInfo
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- CN210423522U CN210423522U CN201921162675.0U CN201921162675U CN210423522U CN 210423522 U CN210423522 U CN 210423522U CN 201921162675 U CN201921162675 U CN 201921162675U CN 210423522 U CN210423522 U CN 210423522U
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Abstract
The utility model discloses a brake belongs to car braking technical field. The friction plate wear clearance compensation device comprises a friction plate wear clearance compensation device, the friction clearance self-adjusting shifting plate and a self-adjusting shifting plate elastic reset component, the friction clearance compensation ratchet structure comprises a ratchet sleeve, a clearance adjusting screw rod and a brake leading shoe connecting piece, the brake leading shoe connecting piece and a pawl, the ratchet sleeve comprises a sleeve, a ratchet is arranged along the circumferential direction of the sleeve, a brake leading shoe connecting piece sliding connection hole is formed in the left side of an inner cavity of the sleeve, an inner thread hole is formed in the right side of the inner cavity of the sleeve, the clearance adjusting screw rod is in threaded connection with the inner thread hole in the right side of the inner cavity of the sleeve, the right end of the clearance adjusting screw rod is fixedly connected with the left end of the brake leading shoe connecting piece, and the middle of the friction clearance self-adjusting. The device has the characteristics of safety, reliability, timely adjustment, accuracy and the like.
Description
Technical Field
The utility model relates to an automobile brake technical field.
Background
At present, the clearance adjusting structure of the self-energizing brake is divided into two forms: 1. the manual adjusting device is manually adjusted by manpower, so that the abrasion clearance of the friction plate cannot be timely adjusted, the problems of long brake stroke, long parking handle stroke, soft brake and the like are caused, and the driving safety is endangered. 2. The automatic reversing adjusting device has the advantages that the automatic reversing adjusting device cannot completely make up for the braking clearance caused by the abrasion of the friction plates because the advancing frequency is far greater than the reversing frequency in the driving direction of the automobile; and the automatic adjustment device for backing a car mainly depends on the steel wire to complete, and basically meets the automatic adjustment function at the initial braking stage, but after long-time use, the steel wire has the phenomena of insufficient lubrication and extensibility, so that the automatic adjustment function is gradually disabled.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a brake, it has characteristics such as safe and reliable, regulation are timely, accurate.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a brake comprises a brake drum with an inner circular friction surface, a brake leading shoe and a brake trailing shoe are arranged on a brake base plate in bilateral symmetry, so that arc-shaped friction plates of the brake leading shoe and the brake trailing shoe correspond to the inner circular friction surface of the brake drum, a support pin is arranged between the upper ends of the brake leading shoe and the brake trailing shoe, the support pin is fixed on the brake base plate, a hydraulic branch pump for pushing the brake leading shoe and the brake trailing shoe to move towards the left side and the right side respectively is further arranged on the brake base plate, the brake system further comprises a friction plate abrasion gap compensation device, the friction plate abrasion gap compensation device comprises a compensation gap adjustment ratchet wheel structure, a friction gap self-adjusting shifting plate and a self-adjusting shifting plate elastic reset component, the compensation gap adjustment ratchet wheel structure comprises a ratchet wheel sleeve, a gap adjustment screw rod, a brake leading shoe connecting piece, a brake trailing shoe, the ratchet sleeve comprises a sleeve, a ratchet is arranged along the circumferential direction of the sleeve, a brake leading shoe connecting piece sliding connection hole is arranged on the left side of an inner cavity of the sleeve, an inner thread hole is arranged on the right side of the inner cavity of the sleeve, a clearance adjusting screw rod is in threaded connection with the inner thread hole on the right side of the inner cavity of the sleeve, the right end of the clearance adjusting screw rod is fixedly connected with the left end of the brake leading shoe connecting piece, a connection structure connected with the lower end of a brake leading shoe is arranged on the right end of the brake leading shoe connecting piece, the right end of the brake leading shoe connecting piece is in sliding connection with the brake leading shoe connecting piece sliding connection hole on the left side of the inner cavity of the sleeve, the middle part of a friction clearance self-adjusting shifting plate is rotatably connected with the brake leading shoe through a self-adjusting shifting plate rotating shaft, and the upper part of, so that the upper end of the friction clearance self-adjusting shifting plate generates a pulling force towards the right side, and a pawl matched with a ratchet wheel of the compensation clearance adjusting ratchet wheel structure is arranged at the bottom of the friction clearance self-adjusting shifting plate; when braking, the left piston and the right piston of the hydraulic cylinder are pushed by brake fluid to respectively extend towards the left side and the right side, so that the brake leading shoe and the brake trailing shoe are respectively pushed to move towards the left side and the right side, the arc-shaped friction plates of the brake leading shoe and the brake trailing shoe are contacted with the inner circular friction surface of the brake drum to generate a braking effect, meanwhile, the self-adjusting shifting plate rotating shaft moves towards the left side along with the brake leading shoe, under the action that the self-adjusting shifting plate rotating shaft moves towards the left side and the self-adjusting shifting plate elastic resetting component pulls the upper end of the self-adjusting shifting plate of the friction clearance towards the right side, the pawl at the bottom of the self-adjusting shifting plate of the friction clearance moves downwards, so that the ratchet is driven to rotate downwards, when the friction plates increase to a clearance adjusting threshold value due to abrasion clearance, the self-adjusting shifting plate rotating shaft moves towards the left side to a, therefore, the clearance adjusting screw rod rotates relative to the internal thread hole on the right side of the inner cavity of the sleeve to extend outwards for a certain distance, so that the distance between the brake leading shoe and the brake trailing shoe is increased, and the effect of compensating the friction plate to increase the friction clearance due to abrasion is achieved.
The utility model discloses the further improvement lies in:
the self-adjusting shifting plate elastic reset component comprises a support rod and a self-adjusting shifting plate tension spring, the right end of the support rod is connected with the support pin, the right end of the self-adjusting shifting plate tension spring is connected with the support rod, and the left end of the self-adjusting shifting plate tension spring is connected with the upper portion of the friction gap self-adjusting shifting plate.
The right end of the brake collar shoe connecting piece is provided with a brake collar shoe clamping groove of which the connecting structure connected with the lower end of the brake collar shoe is matched with the section of a lower end plate of the brake collar shoe; the right end of the brake slave shoe connecting piece is provided with a brake slave shoe clamping groove which is connected with the lower end part of the brake slave shoe through a connecting structure and is matched with the section of a plate at the lower end part of the brake slave shoe.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the utility model discloses a set up friction disc wearing and tearing clearance compensation arrangement on the stopper, the distance that self-modulation dial plate pivot that sets up on the brake leading shoe moved left when braking is positive correlation with the clearance of the arc friction disc of brake leading shoe and the interior annular friction disc of brake drum, the friction disc wearing and tearing clearance is bigger, the distance that self-modulation dial plate pivot moved left when braking is bigger, the pawl of friction clearance self-modulation dial plate bottom moves down the distance also bigger simultaneously, when the friction disc increases to clearance adjustment threshold value because of wearing and tearing clearance, self-modulation dial plate pivot to the left side moves more than certain degree, pawl of friction clearance self-modulation dial plate bottom stirs a position downwards with the ratchet tooth, thereby make clearance adjustment screw rod outwards stretch out a distance because of the internal thread hole relative rotation on the right side of sleeve inner chamber, so as to increase the distance between brake leading shoe and the brake trailing shoe bottom, equivalent to increased the diameter of the circle that brake leading shoe and brake trailing shoe, the brake pad is used for making up the gap between the abraded brake friction plate and the brake drum, so that the gap is kept constant, and the brake and the handle are always in an effective and controllable range. Thereby generating the effect of compensating the friction plate to increase the friction clearance due to abrasion. The normal clearance between the friction plate and the brake drum is always kept, the friction plate can be automatically adjusted by braking in the advancing direction after being worn, the efficiency of automatic adjustment is improved, and the driving safety is ensured. The device has the characteristics of safety, reliability, timely adjustment, accuracy and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic illustration of the friction plate wear gap compensation assembly of FIG. 1;
FIG. 3 is a schematic structural view of the compensating clearance adjustment ratchet structure of FIG. 2;
fig. 4 is a left side view of fig. 3.
In the drawings: 1. a brake drum; 2. a brake spider; 3. braking a collar shoe; 4. braking the trailing shoe; 5. a support pin; 6. hydraulic branch pump; 7. a friction clearance self-adjusting dial plate; 8. the self-adjusting shifting plate elastic reset component; 8-1. supporting rods; 8-2, self-adjusting shifting plate tension spring; 9. a clearance adjusting screw; 10. a brake collar shoe attachment; 10-1, a brake collar shoe clamping groove; 11. a brake shoe attachment; 11-1, braking the slave shoe clamping groove; 12. a sleeve; 13. a ratchet wheel; 14, a rotating shaft of the self-adjusting shifting plate; 15. a lower tension spring; 16. a brake slave shoe return spring; 17. and a return spring is arranged on the brake collar shoe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As can be seen from the embodiments shown in fig. 1 to 4, the present embodiment includes a brake drum 1 having an inner circular friction surface, a brake leading shoe 3 and a brake trailing shoe 4 are symmetrically disposed on a brake base plate 2 in a left-right direction so that arc-shaped friction plates of the brake leading shoe 3 and the brake trailing shoe 4 correspond to the inner circular friction surface of the brake drum 1, a support pin 5 is disposed between upper ends of the brake leading shoe 3 and the brake trailing shoe 4 corresponding to the support pin 5, the support pin 5 is fixed on the brake base plate 2, a hydraulic sub-pump 6 for pushing the brake leading shoe 3 and the brake trailing shoe 4 to move to the left and right sides, respectively, is further provided on the brake base plate 2, and includes a friction plate wear gap compensating means including a friction plate wear gap adjusting ratchet structure including a ratchet sleeve, a friction gap self-adjusting dial plate 7 and a self-adjusting dial plate elastic return member 8, the compensation gap adjusting, a clearance adjusting screw rod 9, a brake leading shoe connecting piece 10, a brake trailing shoe connecting piece 11 and a pawl, wherein the ratchet sleeve comprises a sleeve 12, a ratchet 13 is arranged along the circumferential direction of the sleeve 12, a brake leading shoe connecting piece sliding matching connecting hole is arranged at the left side of the inner cavity of the sleeve 12, an inner threaded hole is arranged at the right side of the inner cavity of the sleeve 12, the clearance adjusting screw rod 9 is in threaded connection with the inner threaded hole at the right side of the inner cavity of the sleeve 12, the right end of the clearance adjusting screw rod 9 is fixedly connected with the left end of the brake trailing shoe connecting piece 11, a connecting structure connected with the lower end of a brake trailing shoe 4 is arranged at the right end of the brake trailing shoe connecting piece 11, a connecting structure connected with the lower end of the brake leading shoe 3 is arranged at the left end of the brake leading shoe connecting piece 10, the right end of the brake leading shoe connecting piece sliding matching connecting hole at the left side of the, the upper part of the friction clearance self-adjusting dial plate 7 is elastically connected with the brake bottom plate 2 through a self-adjusting dial plate elastic reset component 8, so that the upper end of the friction clearance self-adjusting dial plate 7 generates a pulling force towards the right side, and a pawl matched with a ratchet wheel 13 of a compensation clearance adjusting ratchet wheel structure is arranged at the bottom of the friction clearance self-adjusting dial plate 7; when braking, the left piston and the right piston of the hydraulic cylinder 6 are pushed by brake fluid to respectively extend towards the left side and the right side, so as to push the brake leading shoe 3 and the upper end of the brake trailing shoe 4 to respectively move towards the left side and the right side, so that the arc friction plates of the brake leading shoe 3 and the brake trailing shoe 4 are contacted with the inner circular friction surface of the brake drum 1 to generate a braking effect, meanwhile, the self-adjusting shifting plate rotating shaft 14 moves towards the left side along with the brake leading shoe 3, under the action that the self-adjusting shifting plate rotating shaft 14 moves towards the left side and the self-adjusting shifting plate elastic resetting component 8 pulls the upper end of the self-adjusting shifting plate 7 towards the right side, the pawl at the bottom of the self-adjusting shifting plate 7 of the friction gap moves downwards, so as to drive the ratchet wheel 13 to rotate downwards, when the friction plates increase to a gap adjusting threshold value due to abrasion gaps, the self-adjusting plate rotating shaft 14 moves towards the left side to exceed a certain degree, therefore, the clearance adjusting screw rod 9 rotates relative to the internal threaded hole on the right side of the inner cavity of the sleeve 12 and extends outwards for a certain distance to increase the distance between the brake leading shoe 3 and the brake trailing shoe 4, and the effect of increasing the friction clearance due to abrasion of the compensation friction plate is achieved. The gap adjusting threshold is determined by the distance between the ratchet wheel teeth, the distance between the self-adjusting shifting plate rotating shaft and the brake leading shoe, and the distance between the self-adjusting shifting plate rotating shaft and the friction gap self-adjusting shifting plate. The threshold value can be adjusted by adjusting the parameters, so that the sensitivity of the friction plate wear clearance compensation is adjusted.
The self-adjusting shifting plate elastic resetting component 8 comprises a support rod 8-1 and a self-adjusting shifting plate tension spring 8-2, the right end of the support rod 8-1 is connected with the support pin 5, the right end of the self-adjusting shifting plate tension spring 8-2 is connected with the support rod 8-1, the left end of the self-adjusting shifting plate tension spring is connected with the upper part of the friction gap self-adjusting shifting plate 7, and the pulling direction of the friction gap self-adjusting shifting plate 7 by the self-adjusting shifting plate tension spring 8-2 is corrected through the support rod.
The right end of the brake collar shoe connecting piece 10 is provided with a brake collar shoe clamping groove 10-1 which is connected with the lower end of the brake collar shoe 3 and has a connecting structure matched with the section of a lower end plate of the brake collar shoe 3; the right end of the brake slave shoe connecting piece 11 is provided with a brake slave shoe clamping groove 11-1 which is connected with the lower end part of the brake slave shoe 4 and has a connecting structure matched with the section of a plate at the lower end part of the brake slave shoe 4.
Claims (3)
1. A brake comprising a brake drum (1) having an inner circular friction surface, a brake leading shoe (3) and a brake trailing shoe (4) are arranged on a brake base plate (2) in bilateral symmetry so that arc-shaped friction plates of the brake leading shoe (3) and the brake trailing shoe (4) correspond to the inner circular friction surface of the brake drum (1), a support pin (5) is provided between upper end portions of the brake leading shoe (3) and the brake trailing shoe (4) corresponding thereto, the support pin (5) is fixed to the brake base plate (2), a hydraulic sub-pump (6) for pushing the brake leading shoe (3) and the brake trailing shoe (4) to move to the left and right sides, respectively, characterized in that it further comprises a friction plate wear gap compensating means comprising a clearance adjusting ratchet structure, the self-adjusting ratchet structure comprises a ratchet sleeve, a clearance adjusting screw rod (9), a brake leading shoe connecting piece (10), a brake trailing shoe connecting piece (11) and a pawl, wherein the ratchet sleeve comprises a sleeve (12), a ratchet (13) is arranged along the circumferential direction of the sleeve (12), a brake leading shoe connecting piece sliding connecting hole is formed in the left side of an inner cavity of the sleeve (12), an inner thread hole is formed in the right side of the inner cavity of the sleeve (12), the clearance adjusting screw rod (9) is in threaded connection with the inner thread hole in the right side of the inner cavity of the sleeve (12), the right end of the clearance adjusting screw rod (9) is fixedly connected with the left end of the brake trailing shoe connecting piece (11), and a connecting structure connected with the lower end of the brake trailing shoe (4) is arranged at the right end of the brake trailing shoe connecting piece (11), the left end of the brake leading shoe connecting piece (10) is provided with a connecting structure connected with the lower end of the brake leading shoe (3), the right end of the brake leading shoe connecting piece (10) is connected with a brake leading shoe connecting piece sliding connection hole on the left side of the inner cavity of the sleeve (12) in a sliding manner, the middle part of the friction gap self-adjusting shifting plate (7) is rotatably connected with the brake leading shoe (3) through a self-adjusting shifting plate rotating shaft (14), the upper part of the friction gap self-adjusting shifting plate (7) is elastically connected with the brake bottom plate (2) through a self-adjusting shifting plate elastic resetting part (8), so that the upper end of the friction gap self-adjusting shifting plate (7) generates a tensile force towards the right side, and a pawl matched with a ratchet wheel (13) of the compensation gap adjusting ratchet wheel structure is arranged at the bottom of the friction gap self-adjusting plate (7); when the brake is carried out, a left piston and a right piston of a hydraulic cylinder (6) are pushed by brake fluid to respectively extend towards the left side and the right side, so that the brake leading shoe (3) and the upper end of the brake trailing shoe (4) are pushed to respectively move towards the left side and the right side, so that an arc friction plate of the brake leading shoe (3) and the brake trailing shoe (4) is in contact friction with an inner circular friction surface of a brake drum (1) to generate a braking effect, meanwhile, the self-adjusting shifting plate rotating shaft (14) moves towards the left side along with the brake leading shoe (3), under the action that the self-adjusting shifting plate rotating shaft (14) moves towards the left side and the self-adjusting shifting plate elastic resetting component (8) pulls the upper end of the friction gap self-adjusting shifting plate (7) towards the right side, a pawl at the bottom of the friction gap self-adjusting shifting plate (7) moves downwards, so that the ratchet wheel (13), when the friction plate is increased to a clearance adjusting threshold value due to abrasion clearance, the self-adjusting shifting plate rotating shaft (14) moves to the left beyond a certain degree, and a pawl at the bottom of the friction clearance self-adjusting shifting plate (7) shifts the ratchet teeth downwards to a position, so that the clearance adjusting screw rod (9) extends outwards for a certain distance due to relative rotation with an internal thread hole at the right side of an inner cavity of the sleeve (12), the distance between the brake leading shoe (3) and the brake trailing shoe (4) is increased, and the effect of compensating the friction plate for the increase of the friction clearance due to abrasion is achieved.
2. A brake according to claim 1, wherein: the self-adjusting shifting plate elastic reset component (8) comprises a support rod (8-1) and a self-adjusting shifting plate tension spring (8-2), the right end of the support rod (8-1) is connected with the support pin (5), the right end of the self-adjusting shifting plate tension spring (8-2) is connected with the support rod (8-1), and the left end of the self-adjusting shifting plate tension spring is connected with the upper part of the friction gap self-adjusting shifting plate (7).
3. A brake according to claim 1 or 2, wherein: the right end of the brake collar shoe connecting piece (10) is provided with a brake collar shoe clamping groove (10-1) which is connected with the lower end of the brake collar shoe (3) and has a connecting structure matched with the section of a lower end plate of the brake collar shoe (3); the right end of the brake slave shoe connecting piece (11) is provided with a brake slave shoe clamping groove (11-1) which is connected with the lower end part of the brake slave shoe (4) and has a connecting structure matched with the section of a lower end plate of the brake slave shoe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921162675.0U CN210423522U (en) | 2019-07-23 | 2019-07-23 | Brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921162675.0U CN210423522U (en) | 2019-07-23 | 2019-07-23 | Brake |
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| Publication Number | Publication Date |
|---|---|
| CN210423522U true CN210423522U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921162675.0U Active CN210423522U (en) | 2019-07-23 | 2019-07-23 | Brake |
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| Country | Link |
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| CN (1) | CN210423522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259856A (en) * | 2019-07-23 | 2019-09-20 | 霸州市华诚汽车制动器有限公司 | A kind of brake |
| CN113404794A (en) * | 2021-07-27 | 2021-09-17 | 青岛海通制动器有限公司 | Wedge brake for automobile |
-
2019
- 2019-07-23 CN CN201921162675.0U patent/CN210423522U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259856A (en) * | 2019-07-23 | 2019-09-20 | 霸州市华诚汽车制动器有限公司 | A kind of brake |
| CN113404794A (en) * | 2021-07-27 | 2021-09-17 | 青岛海通制动器有限公司 | Wedge brake for automobile |
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