CN115013457A - Brake clearance adjusting device of air pressure disc type brake with bevel gear transmission structure - Google Patents
Brake clearance adjusting device of air pressure disc type brake with bevel gear transmission structure Download PDFInfo
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- CN115013457A CN115013457A CN202210675965.5A CN202210675965A CN115013457A CN 115013457 A CN115013457 A CN 115013457A CN 202210675965 A CN202210675965 A CN 202210675965A CN 115013457 A CN115013457 A CN 115013457A
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- bevel gear
- sleeve
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- driving
- push rod
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 210000000078 claw Anatomy 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a brake clearance adjusting device of an air disc brake with a bevel gear transmission structure, belonging to the field of brakes. The technical scheme adopted by the invention is as follows: the invention relates to a brake clearance adjusting device of an air disc brake with a bevel gear transmission structure, which comprises a driving push rod, a corresponding adjusting sleeve, a corresponding sleeve, a driven push rod, a corresponding sleeve and a reference seat, wherein the reference seat is positioned between the driving push rod and the driven push rod, a pressure arm comprises an arc-shaped cylinder and an arm of force, the arc-shaped cylinder is provided with an eccentric arc groove, the arm of force is arranged on one side of the outer side surface of the arc-shaped cylinder, one end of the arc-shaped cylinder is provided with a driving bevel gear, the driving bevel gear is adjacent to the driving adjusting sleeve on the driving push rod, the driving adjusting sleeve is provided with a driven bevel gear, and the driving bevel gear and the driven bevel gear are mutually meshed and have vertical rotating centers.
Description
Technical Field
The invention relates to a brake clearance adjusting device of an air disc brake with a bevel gear transmission structure, belonging to the field of brakes.
Background
The brakes used in automobiles at present are mainly two types, namely disc brakes and drum brakes. Compare in drum brake disc brake thermal stability, the better braking process of water stability is more steady easily realizes clearance automatic adjustment, and disc brake's friction facing is more easily changed after wearing and tearing, can also in time send alarm signal and remind the friction facing of changing. Disc brakes are gradually replacing drum brakes in the brake system market, occupying the brake market.
The performance of the brake clearance self-adjusting mechanism of the disc brake is an important index for comparing the advantages and the disadvantages of various disc brakes. The braking clearance is increased along with the abrasion of the friction plate in the braking process, and the braking of the automobile is greatly influenced.
Disclosure of Invention
The invention provides a brake clearance adjusting device of an air disc brake with a bevel gear transmission structure, which solves the problem of reduced braking effect caused by abrasion during braking.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention relates to a brake clearance adjusting device of an air disc brake with a bevel gear transmission structure, which comprises a driving push rod, a corresponding adjusting sleeve, a corresponding sleeve, a driven push rod, a corresponding sleeve and a reference seat, wherein the reference seat is positioned between the driving push rod and the driven push rod, and a pressure arm,
the pressure arm comprises an arc-shaped cylinder and an arm of force, the arc-shaped cylinder is provided with an eccentric arc groove, the arm of force is arranged on one side of the outer side face of the arc-shaped cylinder, one end of the arc-shaped cylinder is provided with a driving bevel gear, the driving bevel gear is adjacent to a driving adjusting sleeve on a driving push rod, the driving adjusting sleeve is provided with a driven bevel gear, and the driving bevel gear and the driven bevel gear are meshed with each other and have vertical rotating centers.
Preferably, the device further comprises a fixing frame, the fixing frame comprises a top frame and four downward fixing claws, the top frame is in contact with an arc cylinder of the pressure arm, an arc rotating groove is formed in the inner side face of the top frame, the outer side face of the arc cylinder is arranged in the arc rotating groove to rotate, a cylindrical shaft is arranged at the top of the reference seat, and the side face of the cylindrical shaft is arranged in an eccentric arc groove of the arc cylinder.
Preferably, the center of the eccentric arc groove of the arc cylinder is the rotation center of the arc cylinder, the rotation center is close to the force arm, and the radius of the arc cylinder on the other side is gradually increased from the side of the force arm.
Preferably, the end of the arc cylinder is provided with a short shaft, the short shaft is provided with a shaft shoulder, the driving bevel gear is sleeved on the short shaft, the rear part of the driving bevel gear is in contact with the shaft shoulder, a key groove and a fixed key are respectively arranged between the driving bevel gear and the short shaft, the width of the key groove is larger than that of the fixed key, and the fixed key touches the edge of the key groove to drive the driving bevel gear to rotate when the rotation limit of the arc cylinder is limited.
Preferably, the bottom of the outer peripheral surface of the adjusting sleeve is provided with a shaft shoulder, the driven bevel gear is sleeved on the adjusting sleeve and is limited to rotate radially through a key, the adjusting sleeve is sleeved on the driving sleeve, the inside of the sleeve is connected with the driving push rod through threads, the driving sleeve is meshed with an intermediate gear on the lower portion of the reference seat through the driving gear, and the intermediate gear is meshed with a driven gear on the driven sleeve.
Preferably, the front ends of the driving push rod and the driven push rod are provided with a baffle plate in a penetrating mode, the lower portion of the fixing claw is fixed on the baffle plate, and a return spring is arranged between the reference seat and the baffle plate.
Preferably, the front ends of the driving push rod and the driven push rod are provided with push plates, and a single bearing is arranged between the driving sleeve and the adjusting sleeve.
Preferably, the fixed frame and the arc-shaped cylinder of the pressure arm are connected by a plane bearing 19.
The method for automatically adjusting the clearance according to the brake clearance adjusting device of the air disc brake with the bevel gear transmission structure comprises the following steps,
1) when braking, the force arm of the pressure arm is driven to move downwards to drive the arc-shaped cylinder to rotate and push the reference seat to move downwards; driving the driving push rod, the driven push rod and the push plate to move downwards, so that the friction disc on the push plate is in friction with the brake disc to realize braking;
2) when the rotation amount of the arc-shaped cylinder exceeds the width clearance of the key groove on the arc-shaped cylinder, the key on the pressure arm is in contact with the key groove end surface of the bevel gear, so that the bevel gear is meshed and rotates, the adjusting sleeve drives the sleeve to rotate under the action of the one-way bearing, the sleeve drives the driven gear through the driving gear and the intermediate gear, and the driven gear transmits the rotation to the sleeve of the driven adjuster. The sleeve and the push rod are in threaded connection, so that the rotation of the sleeve and the driven shaft is converted into axial movement of the push rod, and the push rod pushes the push plate, so that excessive gaps are eliminated;
3) after the excessive clearance is eliminated, the pressure between the sleeve and the driven push rod as well as the pressure between the sleeve and the push rod is rapidly increased, and the friction force stops rotating along with the increase;
4) after the brake is released, the pressure arm, the driving bevel gear and the adjusting sleeve rotate under the action of the return spring 12, the adjusting sleeve is separated from the driving sleeve under the action of the one-way bearing, and the sleeve is fixed to realize reset.
The shifting fork structure of the existing brake structure is improved into a bevel gear structure, so that the transmission continuity is stable, and the transmission is precise. The invention has the function of automatically compensating the clearance, has simple structure, less parts, meshing of gears, stable movement, high precision and easy replacement and high reliability. Meanwhile, the gear has high strength and hardness, so that the service life of the adjusting mechanism is longer.
Drawings
Figure 1 is a schematic view of the overall structure of the present invention,
figure 2 is a front view of the present invention,
figure 3 is a cut-away view of the present invention,
figure 4 is a diagram of the pressure arm configuration of the present invention,
figure 5 is a side view of the pressure arm and drive bevel gear of the present invention,
figure 6 is a view of the structure of the holder of the present invention,
reference numerals: 1. the device comprises a reference seat, 2, a pressure arm, 21, an arc cylinder, 22, an arm of force, 23, an eccentric arc groove, 24, a short shaft, 25, a shaft shoulder 26 key, 3 a driving bevel gear, 31 a key groove, 4 an adjusting sleeve, 41, a driven bevel gear, 42 a driving sleeve, 43, a driving push rod, 44 a one-way bearing, 45, driven adjustment, 5, a baffle plate 51, a driving gear 52, an intermediate gear 53 a driven gear, 6, a return spring, 7 a push plate, 8 a driven push rod, 9 a fixing frame, 91 a plane bearing, 92 a fixing claw and 93 an arc rotating groove.
Detailed Description
The following further illustrates the specific structure of the present invention:
the invention relates to a brake clearance adjusting device of an air pressure disc brake with a bevel gear transmission structure, which is used for adjusting the service time clearance of the brake and keeping the braking effect of the brake.
Specifically, the present invention is shown in fig. 1, and includes a driving push rod 43, a corresponding adjusting sleeve 4, a sleeve, a driven push rod 8, a corresponding sleeve, and a reference seat 1, wherein the reference seat 1 is located between the driving push rod 43 and the driven push rod 8. The front ends of the driving push rod 43 and the driven push rod 8 are provided with a baffle 5 in a penetrating way, the lower part of the fixed claw is fixed on the baffle 5, and a return spring 6 is arranged between the reference seat 1 and the baffle 5.
The adjusting sleeve 4 is sleeved on the driving sleeve, the inside of the sleeve is connected with the driving push rod 43 through threads, the driving sleeve is meshed with the intermediate gear on the lower portion of the reference seat 1 through the driving gear, and the intermediate gear is meshed with the driven gear on the driven sleeve.
The front ends of the driving push rod 43 and the driven push rod 8 are provided with push plates, and a single bearing is arranged between the driving sleeve and the adjusting sleeve 4.
The invention is characterized in that the pressure arm 2 comprises an arc cylinder 21 and a force arm, the arc cylinder 21 is provided with an eccentric arc groove 23, the force arm is arranged on one side of the outer side surface of the arc cylinder 21, the center of the eccentric arc groove 23 of the arc cylinder 21 is the rotation center of the arc cylinder 21, the rotation center is close to the force arm, and the radius of the arc cylinder 21 on the other side of the arc cylinder 21 from the force arm side is gradually increased.
One end of the arc cylinder 21 is provided with a driving bevel gear 3, a short shaft is arranged at the end of the arc cylinder 21, a shaft shoulder is arranged on the short shaft, the driving bevel gear 3 is sleeved on the short shaft, the rear part of the driving bevel gear is in contact with the shaft shoulder, a key groove and a fixed key are respectively arranged between the driving bevel gear 3 and the short shaft, the width of the key groove is larger than that of the fixed key, and the fixed key is in contact with the edge of the key groove to drive the driving bevel gear 3 to rotate when the rotation limit of the arc cylinder 21 is limited.
The driving bevel gear 3 is adjacent to a driving adjusting sleeve 4 on a driving push rod 43, a driven bevel gear 41 is arranged on the driving adjusting sleeve 4, the driving bevel gear 3 and the driven bevel gear 41 are meshed with each other, and the rotating center is vertical. The bottom of the outer peripheral surface of the adjusting sleeve 4 is provided with a shaft shoulder, and the driven bevel gear 41 is sleeved on the adjusting sleeve 4 and is limited to rotate in the radial direction through a key.
As shown in the figure, the fixing frame 9 comprises a top frame contacting the arc-shaped cylinder 21 of the pressure arm 2 and four downward fixing claws, an arc-shaped rotating groove is formed in the inner side surface of the top frame, the outer side surface of the arc-shaped cylinder 21 is arranged in the arc-shaped rotating groove to rotate, a cylindrical shaft is arranged at the top of the reference base 1, and the side surface of the cylindrical shaft is arranged in the eccentric arc-shaped groove 23 of the arc-shaped cylinder 21. The arc-shaped rotating groove of the fixing frame 9 is connected with the arc-shaped cylinder 21 of the pressure arm 2 by a plane bearing 19. The top frame on the upper side of the fixed plate is attached to the brake and is fixed.
The invention relates to a method for automatically adjusting a clearance of a brake clearance adjusting device of an air disc brake with a bevel gear transmission structure, which is characterized by comprising the following steps of,
a) when braking, the force arm of the driving pressure arm 16 is downward to drive the arc cylinder to rotate and push the reference seat to move downward; driving the driving push rod, the driven push rod and the push plate to move downwards, so that the friction disc on the push plate is in friction with the brake disc to realize braking;
b) when the rotation amount of the arc-shaped cylinder exceeds the width clearance of the key groove on the arc-shaped cylinder, the key on the pressure arm is in contact with the key groove end surface of the bevel gear, so that the bevel gear is meshed and rotates, the adjusting sleeve drives the sleeve to rotate under the action of the one-way bearing, the sleeve drives the driven gear through the driving gear and the intermediate gear, and the driven gear transmits the rotation to the sleeve of the driven adjuster. The sleeve and the push rod are in threaded connection, so that the rotation of the sleeve and the driven shaft is converted into axial movement of the push rod, and the push rod pushes the push plate, so that excessive gaps are eliminated;
c) after the excessive clearance is eliminated, the pressure between the sleeve and the driven push rod as well as the pressure between the sleeve and the push rod is rapidly increased, and the friction force stops rotating along with the increase;
d) after the brake is released, the pressure arm, the driving bevel gear and the adjusting sleeve rotate under the action of the return spring 12, the adjusting sleeve is separated from the driving sleeve under the action of the one-way bearing, and the sleeve is fixed to realize the reset.
The shifting fork structure of the existing brake structure is improved into a bevel gear structure, so that the transmission continuity is stable, and the transmission is precise. The invention has the function of automatically compensating the clearance, has simple structure, less parts, meshing gears, stable motion, high precision and easy replacement and high reliability. Meanwhile, the gear has high strength and hardness, so that the service life of the adjusting mechanism is longer.
Claims (9)
1. A brake clearance adjusting device of an air disc brake with a bevel gear transmission structure comprises a driving push rod (43), a corresponding adjusting sleeve (4), a driving sleeve (42), a driven push rod (8), a corresponding driven sleeve (45) and a reference seat (1), wherein the reference seat (1) is positioned between the driving push rod (43) and the driven push rod (8),
still include pressure arm (2), pressure arm (2) include arc cylinder (21) and arm of force (22), arc cylinder (21) are equipped with eccentric arc groove (23), arm of force (22) set up in arc cylinder (21) side edge centre position, the one end of arc cylinder (21) is equipped with drive bevel gear (3), drive bevel gear (3) are adjacent to be initiative adjustment cover (4) on drive sleeve (42), be equipped with driven bevel gear (41) on initiative adjustment cover (4), drive bevel gear (3) and driven bevel gear (41) intermeshing and centre of rotation are perpendicular.
2. The air pressure disc brake braking clearance adjusting device with the bevel gear transmission structure is characterized by further comprising a fixing frame (9), wherein the fixing frame (9) comprises a top frame and four downward fixing claws, the top frame is in contact with an arc-shaped cylinder (21) of the pressure arm (2), an arc-shaped rotating groove is formed in the inner side face of the top frame, the outer side face of the arc-shaped cylinder (21) is arranged in the arc-shaped rotating groove to rotate, a cylindrical shaft is arranged at the top of the reference seat (1), and the upper side face of the cylindrical shaft is arranged in an eccentric arc-shaped groove (23) of the arc-shaped cylinder (21).
3. The bevel gear transmission structure air pressure disc brake clearance adjusting device as set forth in claim 1, characterized in that the center of the eccentric arc groove (23) of the arc cylinder (21) is the rotation center of the arc cylinder (21), and the rotation center is close to the force arm.
4. The air disc brake braking clearance adjusting device of the bevel gear transmission structure according to claim 3, wherein a short shaft is arranged at the end of the arc cylinder (21), a shaft shoulder is arranged on the short shaft, the drive bevel gear (3) is sleeved on the short shaft, the rear part of the drive bevel gear (3) contacts with the shaft shoulder, a key groove and a fixed key are respectively arranged between the drive bevel gear (3) and the short shaft, the width of the key groove is larger than that of the fixed key, the fixed key contacts with the edge of the key groove to drive the drive bevel gear (3) to rotate after the arc cylinder (21) rotates for a certain angle, and the rotating angle of the arc cylinder (21) is the stable clearance.
5. The air disc brake clearance adjusting device of the bevel gear transmission structure as claimed in claim 3, wherein a shaft shoulder is arranged at the bottom of the outer peripheral surface of the adjusting sleeve (4), the driven bevel gear (41) is assembled on the adjusting sleeve (4) in a riveting manner, the adjusting sleeve (4) is sleeved on the driving sleeve (42), the inside of the sleeve is connected with the driving push rod (43) through a thread, the driving sleeve (42) is meshed with an intermediate gear at the lower part of the reference seat (1) through the driving gear, and the intermediate gear is meshed with a driven gear on the driven sleeve (45).
6. The air disc brake clearance adjusting device with the bevel gear transmission structure as claimed in claim 2, wherein the front ends of the driving push rod (43) and the driven push rod (8) are provided with a baffle (5) in a penetrating manner, the lower part of the fixed claw is fixed on the baffle (5), and a return spring (6) is arranged between the reference seat (1) and the baffle (5).
7. The air disc brake clearance adjusting device with the bevel gear transmission structure as claimed in claim 1, wherein the front ends of the driving push rod (43) and the driven push rod (8) are provided with push plates, and a single bearing (44) is arranged between the driving sleeve (42) and the adjusting sleeve (4).
8. The bevel-gear-drive-structured air disc brake clearance adjustment device of claim 1, characterized in that the fixed frame (9) and the arc-shaped cylinder (21) of the pressure arm (2) are connected by a flat bearing (19).
9. The method for automatically adjusting the clearance of the brake clearance adjusting device of the air disc brake with the bevel gear transmission structure according to any one of claims 1 to 8, which comprises the steps of,
1) when braking, the force arm of the pressure arm (2) is driven to move downwards to drive the arc-shaped cylinder to rotate and push the reference seat to move downwards; driving the driving push rod, the driven push rod and the push plate to move downwards, so that the friction disc on the push plate is in friction with the brake disc to realize braking;
2) when the rotation amount of the arc-shaped cylinder exceeds the width gap of the key groove on the arc-shaped cylinder, the key on the pressure arm is contacted with the end face of the key groove of the bevel gear, so that the bevel gear is meshed and rotates, the adjusting sleeve drives the sleeve to rotate under the action of the one-way bearing, the sleeve drives the driven gear through the driving gear and the intermediate gear, and the driven gear transmits the rotation to the sleeve of the driven adjuster;
the sleeve and the push rod are in threaded connection, so that the rotation of the sleeve and the driven shaft is converted into axial movement of the push rod, and the push rod pushes the push plate, so that excessive gaps are eliminated;
3) after the excessive clearance is eliminated, the pressure between the sleeve and the driven push rod and the push plate is rapidly increased, and the friction force stops rotating along with the increase;
4) after the brake is released, the pressure arm, the driving bevel gear and the adjusting sleeve rotate under the action of the return spring 12, the adjusting sleeve is separated from the driving sleeve (42) under the action of the one-way bearing, and the sleeve is fixed to realize the reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675965.5A CN115013457A (en) | 2022-06-15 | 2022-06-15 | Brake clearance adjusting device of air pressure disc type brake with bevel gear transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675965.5A CN115013457A (en) | 2022-06-15 | 2022-06-15 | Brake clearance adjusting device of air pressure disc type brake with bevel gear transmission structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115013457A true CN115013457A (en) | 2022-09-06 |
Family
ID=83075902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210675965.5A Withdrawn CN115013457A (en) | 2022-06-15 | 2022-06-15 | Brake clearance adjusting device of air pressure disc type brake with bevel gear transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115013457A (en) |
-
2022
- 2022-06-15 CN CN202210675965.5A patent/CN115013457A/en not_active Withdrawn
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Application publication date: 20220906 |
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| WW01 | Invention patent application withdrawn after publication |