CN111365385A - Drum brake disc with multiple brake shoes - Google Patents
Drum brake disc with multiple brake shoes Download PDFInfo
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- CN111365385A CN111365385A CN202010481640.4A CN202010481640A CN111365385A CN 111365385 A CN111365385 A CN 111365385A CN 202010481640 A CN202010481640 A CN 202010481640A CN 111365385 A CN111365385 A CN 111365385A
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- brake
- plate
- rotating
- drum
- shoe
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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
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc 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
- 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
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a multi-brake-shoe drum brake disc, and relates to the technical field of vehicle braking devices. The invention comprises a brake drum structure and a rotating structure, wherein the rotating structure penetrates through the brake drum structure and is rotationally connected with the brake drum structure; the rotating structure comprises a rotating shaft matched with the brake drum structure, and a rotating limiting plate, a limiting ring, a diamond plate and a rotating limiting block are sequentially fixed on the outer surface of the rotating shaft from top to bottom; the upper surface of the rotating limiting plate is connected with a first connecting rod in an equidistance rotating mode, the lower surface of the rotating limiting plate is connected with a second connecting rod in an equidistance rotating mode, and one end of the first connecting rod and one end of the second connecting rod are both connected with a brake shoe in a rotating mode. According to the invention, through the use of the rotating structure, the first connecting rod, the second connecting rod and the hydraulic telescopic cylinder, the traditional two-brake-shoe drum brake is changed into a multi-brake-shoe drum brake, so that the problems of uneven abrasion of the braking surfaces of the two-brake-shoe transverse or longitudinal brake, uneven circumferential stress of a brake disc and low braking efficiency are solved.
Description
Technical Field
The invention belongs to the technical field of vehicle braking devices, and particularly relates to a multi-brake-shoe drum type brake disc.
Background
A drum brake, generally a drum brake, is composed of a rotating part, a fixed part, an actuating part and a position adjusting device. The drum brake consists of brake bottom plate, brake cylinder, brake shoe, connecting rod, spring, pin and brake drum, and has one iron casting similar to that of bell drum and fixed to the tyre to rotate at the same speed. The disc brake has the advantages of better reactivity and stability, better heat dissipation, simple and convenient replacement and the like. Drum brakes are used in many rear wheels of small cars because of their low cost and high absolute braking force. But the wear rate is higher and therefore the overall cost is higher. The drum brake has the advantages that: the hand brake has the function of automatic braking, so that the brake system can use lower oil pressure or use a brake drum with the diameter being much smaller than that of a brake disc, and the hand brake mechanism is easy to install. Some rear wheel disc brake models can install a drum brake hand brake mechanism at the center of a brake disc, and the parts are easy to process and form and have low manufacturing cost.
Present drum brake mostly is two brake shoes and brakes, and during the braking, hydraulic pressure wheel cylinder pushes away two brake shoes to both sides along the horizontal direction, but during the braking, the one end surface that hydraulic pressure wheel cylinder was kept away from always to the brake shoe touches earlier the brake housing and brakes, and long this is past, and brake shoe surface wear is inhomogeneous, and when the braking, hydraulic pressure wheel cylinder pushes away the brake shoe to both sides along the horizontal direction application of force, can't accomplish the circumference application of force, and braking efficiency is low.
Disclosure of Invention
The invention aims to provide a multi-brake-shoe drum brake disc, which changes the traditional two-brake-shoe drum brake into a multi-brake-shoe drum brake through the use of a rotating structure, a first connecting rod, a second connecting rod and a hydraulic telescopic cylinder, and solves the problems of uneven abrasion of the transverse or longitudinal brake surfaces of double brake shoes, uneven circumferential stress of the brake disc and low brake efficiency.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a multi-brake-shoe drum type brake disc which comprises a brake drum structure and a rotating structure, wherein the rotating structure penetrates through the brake drum structure and is rotatably connected with the brake drum structure; the rotating structure comprises a rotating shaft matched with the brake drum structure, and a rotating limiting plate, a limiting ring, a diamond plate and a rotating limiting block are sequentially fixed on the outer surface of the rotating shaft from top to bottom; first lug plates are fixed on the outer surface of the rotation limiting plate at equal intervals, first through holes are formed in one surface of each first lug plate, first limiting holes are formed in one surface of the rotation limiting plate at equal intervals, second fixing columns are fixed on the lower surface of the rhombic plate at equal intervals, first rectangular through holes are formed in one surface of the rotation limiting block, and second rectangular through holes are formed in the upper surface of the rotation limiting block; a first annular groove is formed in the outer surface of the rotating shaft and located between the rotating limiting plate and the limiting ring, and a second annular groove is formed in the outer surface of the rotating shaft and located between the diamond plate and the rotating limiting block; the upper surface of the rotation limiting plate is connected with first connecting rods in an equidistance rotation mode, the lower surface of the rotation limiting plate is connected with second connecting rods in an equidistance rotation mode, and one ends of the first connecting rods and one ends of the second connecting rods are both connected with brake shoes in a rotation mode; the brake shoe comprises an inner ring arc-shaped plate which is respectively in rotating fit with a first connecting rod and a second connecting rod, a second lug plate is fixed on the inner surface of the inner ring arc-shaped plate, a second limiting hole is formed in one surface of the inner ring arc-shaped plate, an outer ring arc-shaped plate is fixed on the outer surface of the inner ring arc-shaped plate, and third lug plates are fixed on two sides of the outer ring arc-shaped plate; two adjacent brake shoes are fixedly connected through a first return spring, and the brake shoes are fixedly connected with a rotating structure through a second return spring; the brake drum structure comprises a barrel body matched with the rotating structure, a first limiting plate and a second limiting plate which are respectively matched with the first annular groove and the second annular groove are sequentially fixed on the inner surface of the barrel body from top to bottom, and first fixing columns are fixed on the lower surface of the first limiting plate at equal intervals; a telescopic hydraulic cylinder is fixed on the lower surface of the second limiting plate, the output shaft end of the telescopic hydraulic cylinder penetrates through a first rectangular through hole formed in one surface of the rotation limiting block, the output shaft end of the telescopic hydraulic cylinder is movably connected with the rotation limiting block through a third pin shaft, and the third pin shaft penetrates through a second rectangular through hole formed in the rotation limiting block; the first fixing column is fixedly connected with the second fixing column through a third return spring.
Furthermore, a second through hole is formed in one surface of the second ear plate, and a third through hole is formed in one surface of the third ear plate.
Furthermore, third lug plates fixedly connected to the two adjacent brake shoes are fixedly connected through a first return spring, and the second lug plates are fixedly connected with the first lug plates through a second return spring.
Furthermore, a first limiting hole formed in the surface of the rotating limiting plate at an equal distance is rotatably connected with a first connecting rod and a second connecting rod through a first pin shaft respectively, and one end of the first connecting rod and one end of the second connecting rod are rotatably connected with the brake shoe through a second pin shaft.
Furthermore, a first through hole is formed in the axis of the barrel body, a mounting plate is fixed on the outer surface of the barrel body, a mounting hole is formed in one surface of the mounting plate, and a sealing cover is sealed at one end of the barrel body.
Further, the arc angle range of the brake shoe is 60-80 degrees, and the clockwise rotation angle range of the rotating structure is 0-20 degrees.
Furthermore, a second through hole is formed in one surface of the rotating structure, and a brake pad is fixed on the outer surface of the outer ring arc-shaped plate.
Furthermore, a fixing ring matched with the third pin shaft is fixed at the output shaft end of the hydraulic cylinder, a hydraulic oil pipe is fixed on one surface of the hydraulic cylinder, and a third through hole matched with the hydraulic oil pipe is formed in one surface of the sealing cover.
The invention has the following beneficial effects:
1. according to the invention, through the use of the brake shoes, the traditional two-brake-shoe drum brake is changed into the multi-brake-shoe drum brake, when the structure is used for braking, the plurality of brake shoes are simultaneously pushed to one end away from the rotating structure and simultaneously contact with the brake shell for braking, the brake surface is uniformly worn, and the service life is longer, so that the problems that when the structure is used for braking, the two-brake-shoe transverse or longitudinal brake is used, the brake shoe is pushed to two sides by the wheel cylinder for braking, but the outer surface of one end of the brake shoe, which is always away from the wheel cylinder, contacts with the brake shell for braking first, and the wear of the brake surface is non-uniform when the.
2. According to the invention, through the use of the rotating structure, the brake shoes and the hydraulic telescopic cylinder, the traditional horizontal force application of the two brake shoes is changed into the circumferential force application of the multiple brake shoes, when the two brake shoes are braked, the two brake shoes are pushed to two sides along the horizontal direction by the hydraulic cylinder, and the force is applied to the brake shell in the horizontal direction, and the circumferential force application of the four brake shoes, namely the force application in the vertical direction and the horizontal direction, is adopted by the structure, so that the stress of the brake shell is more uniform, and the brake effect is better.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a multi-shoe drum brake rotor of the present invention;
FIG. 2 is a schematic left side view of a multi-shoe drum brake rotor according to the present invention;
FIG. 3 is a schematic bottom view of a multi-shoe drum brake rotor according to the present invention;
FIG. 4 is a schematic top view of a multi-shoe drum brake rotor according to the present invention;
FIG. 5 is a schematic front view of the rotary structure of FIG. 1;
FIG. 6 is a schematic top view of the rotary structure of FIG. 1;
FIG. 7 is a schematic structural view of the brake shoe of FIG. 1;
FIG. 8 is a schematic structural view of the tub of FIG. 1;
FIG. 9 is a schematic top view of the bucket body of FIG. 1;
FIG. 10 is a schematic cross-sectional view B-B of FIG. 9;
FIG. 11 is a schematic sectional view A-A of FIG. 9;
FIG. 12 is a partial structural view of the connection relationship of the hydraulic telescopic cylinder in FIG. 1;
FIG. 13 is a partial structural view of the connection relationship of the diamond plates in FIG. 1;
FIG. 14 is a schematic cross-sectional view B-B of FIG. 4;
FIG. 15 is a schematic sectional view A-A of FIG. 4;
fig. 16 is a schematic structural view of the hydraulic telescopic cylinder in fig. 1.
In the drawings, the components represented by the respective reference numerals are listed below:
1-a brake drum structure, 2-a rotating structure, 3-a first pin shaft, 4-a first connecting rod, 5-a second connecting rod, 6-a second pin shaft, 7-a brake shoe, 8-a first return spring, 9-a second return spring, 10-a third return spring, 11-a telescopic hydraulic cylinder, 12-a sealing cover, 13-a third pin shaft, 101-a barrel body, 102-a mounting plate, 103-a mounting hole, 104-a first limiting plate, 105-a first through hole, 106-a first fixed column, 107-a second limiting plate, 201-a rotating shaft, 202-a rotating limiting plate, 203-a first lug plate, 204-a first through hole, 205-a first annular groove, 206-a limiting ring, 207-a diamond plate, 208-a second fixed column, 209-a second annular groove, 210-a rotation limiting block, 211-a first rectangular through hole, 212-a second rectangular through hole, 213-a first limiting hole, 214-a second through hole, 701-an inner ring arc plate, 702-an outer ring arc plate, 703-a brake pad, 704-a second lug plate, 705-a third lug plate, 706-a second limiting hole, 707-a second through hole, 708-a third through hole, 1101-a fixing ring and 1102-a hydraulic oil pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1 to 16, the present embodiment is a multi-brake-shoe drum brake disc, including a drum structure 1 and a rotating structure 2, wherein the rotating structure 2 penetrates through the drum structure 1 and is rotatably connected to the drum structure 1, and the clockwise rotation angle of the rotating structure 2 ranges from 0 ° to 20 °.
The rotating structure 2 comprises a rotating shaft 201 matched with the brake drum structure 1, a rotating limiting plate 202, a limiting ring 206, a diamond plate 207 and a rotating limiting block 210 are sequentially fixed on the outer surface of the rotating shaft 201 from top to bottom, and a second through hole 214 is formed in one surface of the rotating structure 2.
The outer surface of the rotation limiting plate 202 is fixed with first ear plates 203 at equal intervals, a surface of the first ear plates 203 is provided with first through holes 204, a surface of the rotation limiting plate 202 is provided with first limiting holes 213 at equal intervals, the lower surface of the diamond plate 207 is fixed with second fixing columns 208 at equal intervals, a surface of the rotation limiting block 210 is provided with first rectangular openings 211, and the upper surface of the rotation limiting block 210 is provided with second rectangular openings 212.
A first annular groove 205 is formed in the outer surface of the rotating shaft 201 and located between the rotation limiting plate 202 and the limiting ring 206, and a second annular groove 209 is formed in the outer surface of the rotating shaft 201 and located between the diamond plate 207 and the rotation limiting block 210.
The upper surface equidistance that rotates limiting plate 202 rotates and is connected with head rod 4, the lower surface equidistance that rotates limiting plate 202 rotates and is connected with second connecting rod 5, the one end of head rod 4 all rotates with the one end of second connecting rod 5 and is connected with brake shoe 7, the first spacing hole 213 that the equidistance was seted up in the surface of rotating limiting plate 202 rotates respectively through first round pin axle 3 and is connected with head rod 4 and second connecting rod 5, the one end of head rod 4 all rotates through second round pin axle 6 with the brake shoe with the one end of second connecting rod 5 and is connected.
The brake shoe 7 comprises an inner ring arc plate 701 which is respectively in running fit with the first connecting rod 4 and the second connecting rod 5, a second lug plate 704 is fixed on the inner surface of the inner ring arc plate 701, a second limiting hole 706 is formed in one surface of the inner ring arc plate 701, an outer ring arc plate 702 is fixed on the outer surface of the inner ring arc plate 701, third lug plates 705 are fixed on two sides of the outer ring arc plate 702, a second through hole 707 is formed in one surface of the second lug plate 704, a third through hole 708 is formed in one surface of the third lug plate 705, a brake pad 703 is fixed on the outer surface of the outer ring arc plate 702, and the arc angle of the brake shoe 7 is 60 degrees.
Two adjacent brake shoes 7 are fixedly connected through a first reset spring 8, the brake shoes 7 are fixedly connected with the rotating structure 2 through a second reset spring 9, third lug plates 705 fixedly connected to the two adjacent brake shoes 7 are fixedly connected through the first reset spring 8, and the second lug plates 704 are fixedly connected with the first lug plates 203 through the second reset spring 9.
The brake drum structure 1 comprises a barrel body 101 matched with the rotating structure 2, a first limiting plate 104 and a second limiting plate 107 which are respectively matched with the first annular groove 205 and the second annular groove 209 are sequentially fixed on the inner surface of the barrel body 101 from top to bottom, and first fixing columns 106 are fixed on the lower surface of the first limiting plate 104 at equal intervals.
The lower surface of the second limiting plate 107 is fixed with the telescopic hydraulic cylinder 11, an output shaft end of the telescopic hydraulic cylinder 11 penetrates through a first rectangular through opening 211 formed in one surface of the rotation limiting block 210, an output shaft end of the telescopic hydraulic cylinder 11 is movably connected with the rotation limiting block 210 through a third pin shaft 13, and the third pin shaft 13 penetrates through a second rectangular through opening 212 formed in the rotation limiting block 210.
The first fixing post 106 is fixedly connected with the second fixing post 208 through a third return spring 10.
A first through hole 105 is formed at the axis of the barrel 101, a mounting plate 102 is fixed on the outer surface of the barrel 101, a mounting hole 103 is formed on one surface of the mounting plate 102, and a sealing cover 12 is sealed at one end of the barrel 101.
The output shaft end of the telescopic hydraulic cylinder 11 is fixed with a fixing ring 1101 matched with the third pin 13, a hydraulic oil pipe 1102 is fixed on one surface of the telescopic hydraulic cylinder 11, and a third through hole matched with the hydraulic oil pipe 1102 is formed on one surface of the sealing cover 12.
One specific application of this embodiment is:
when in use, the rotating structure 2, the brake drum structure 1, the first connecting rod 4 and the second connecting rod 5 are assembled together according to the corresponding position relation and the corresponding connection relation, then the brake shell matched with the brake drum structure 1 is assembled with the brake drum structure, when in braking, liquid is injected into the telescopic hydraulic cylinder 11 through the hydraulic oil pipe 1102, the output shaft end of the telescopic hydraulic cylinder 11 is pushed to move upwards by pressure, so that the rotating limiting block 210 in the rotating structure 2 is driven to rotate anticlockwise, then the rotating limiting block 210 fixed on the outer surface of the rotating shaft 201 drives the rotating shaft 201 to rotate anticlockwise, the first connecting rod 4 and the second connecting rod 5 are driven to rotate through the rotating limiting plate 202, so that the brake shoes 7 are driven to extend outwards to brake the brake shell, so that the wheel is braked, and the traditional two-brake-shoe drum brake is changed into a multi-brake-shoe drum brake, the problems of uneven abrasion of the braking surfaces of the double-brake-shoe transverse or longitudinal brakes, uneven circumferential stress of the brake disc and low braking efficiency are solved.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a many brake shoes drum brake disc, includes brake drum structure (1) and rotating-structure (2), its characterized in that:
the rotating structure (2) penetrates through the brake drum structure (1) and is rotatably connected with the brake drum structure (1);
the rotating structure (2) comprises a rotating shaft (201) matched with the brake drum structure (1), and a rotating limiting plate (202), a limiting ring (206), a diamond plate (207) and a rotating limiting block (210) are sequentially fixed on the outer surface of the rotating shaft (201) from top to bottom;
first ear plates (203) are fixed on the outer surface of the rotation limiting plate (202) at equal intervals, first through holes (204) are formed in one surface of each first ear plate (203), first limiting holes (213) are formed in one surface of the rotation limiting plate (202) at equal intervals, second fixing columns (208) are fixed on the lower surface of the rhombic plate (207) at equal intervals, first rectangular through holes (211) are formed in one surface of the rotation limiting block (210), and second rectangular through holes (212) are formed in the upper surface of the rotation limiting block (210);
a first annular groove (205) is formed in the outer surface of the rotating shaft (201) and located between the rotating limiting plate (202) and the limiting ring (206), and a second annular groove (209) is formed in the outer surface of the rotating shaft (201) and located between the rhombic plate (207) and the rotating limiting block (210);
the upper surface of the rotation limiting plate (202) is connected with first connecting rods (4) in an equidistance rotation mode, the lower surface of the rotation limiting plate (202) is connected with second connecting rods (5) in an equidistance rotation mode, and one end of each first connecting rod (4) and one end of each second connecting rod (5) are both connected with a brake shoe (7) in a rotation mode;
the brake shoe (7) comprises an inner ring arc-shaped plate (701) which is respectively in rotating fit with the first connecting rod (4) and the second connecting rod (5), a second lug plate (704) is fixed on the inner surface of the inner ring arc-shaped plate (701), a second limiting hole (706) is formed in one surface of the inner ring arc-shaped plate (701), an outer ring arc-shaped plate (702) is fixed on the outer surface of the inner ring arc-shaped plate (701), and third lug plates (705) are fixed on two sides of the outer ring arc-shaped plate (702);
two adjacent brake shoes (7) are fixedly connected through a first return spring (8), and the brake shoes (7) are fixedly connected with the rotating structure (2) through a second return spring (9);
the brake drum structure (1) comprises a barrel body (101) matched with the rotating structure (2), a first limiting plate (104) and a second limiting plate (107) which are respectively matched with a first annular groove (205) and a second annular groove (209) are sequentially fixed on the inner surface of the barrel body (101) from top to bottom, and first fixing columns (106) are fixed on the lower surface of the first limiting plate (104) at equal intervals;
a telescopic hydraulic cylinder (11) is fixed on the lower surface of the second limiting plate (107), an output shaft end of the telescopic hydraulic cylinder (11) penetrates through a first rectangular through hole (211) formed in one surface of the rotation limiting block (210), an output shaft end of the telescopic hydraulic cylinder (11) is movably connected with the rotation limiting block (210) through a third pin shaft (13), and the third pin shaft (13) penetrates through a second rectangular through hole (212) formed in the rotation limiting block (210);
the first fixing column (106) is fixedly connected with the second fixing column (208) through a third return spring (10).
2. A multi-brake shoe drum brake rotor according to claim 1, wherein said second lug plate (704) has a surface defining a second through hole (707) and said third lug plate (705) has a surface defining a third through hole (708).
3. A multiple-brake-shoe drum brake rotor according to claim 1, wherein the third ear plate (705) fixedly connected to two adjacent brake shoes (7) is fixedly connected to each other by a first return spring (8), and the second ear plate (704) is fixedly connected to the first ear plate (203) by a second return spring (9).
4. A multi-brake-shoe drum brake disc according to claim 1, wherein the first limiting holes (213) formed on one surface of the rotation limiting plate (202) at equal intervals are rotatably connected with a first connecting rod (4) and a second connecting rod (5) through a first pin (3), and one end of the first connecting rod (4) and one end of the second connecting rod (5) are rotatably connected with the brake shoe through a second pin (6).
5. The multi-brake-shoe brake disc of claim 1, wherein a first through hole (105) is formed in the axial center of the drum body (101), a mounting plate (102) is fixed to the outer surface of the drum body (101), a mounting hole (103) is formed in one surface of the mounting plate (102), and a sealing cover (12) is sealed at one end of the drum body (101).
6. A multiple brake shoe drum brake rotor as claimed in claim 1, wherein said brake shoes (7) are arcuate over an angular range of 60 ° to 80 ° and said rotor (2) is rotatable clockwise over an angular range of 0 ° to 20 °.
7. A multi-brake-shoe brake disc according to claim 1, wherein a second through hole (214) is formed in one surface of the rotating structure (2), and a brake pad (703) is fixed to an outer surface of the outer ring arc-shaped plate (702).
8. A multi-brake-shoe drum brake disc according to claim 1, wherein the output shaft end of the hydraulic cylinder (11) is fixed with a fixing ring (1101) matched with the third pin (13), a hydraulic oil pipe (1102) is fixed on one surface of the hydraulic cylinder (11), and a third through hole matched with the hydraulic oil pipe (1102) is formed on one surface of the cover (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481640.4A CN111365385B (en) | 2020-06-01 | 2020-06-01 | Drum brake disc with multiple brake shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481640.4A CN111365385B (en) | 2020-06-01 | 2020-06-01 | Drum brake disc with multiple brake shoes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111365385A true CN111365385A (en) | 2020-07-03 |
| CN111365385B CN111365385B (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010481640.4A Active CN111365385B (en) | 2020-06-01 | 2020-06-01 | Drum brake disc with multiple brake shoes |
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| Country | Link |
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| CN (1) | CN111365385B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111731430A (en) * | 2020-07-29 | 2020-10-02 | 天津美派电动科技有限公司 | Drum brake device |
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| US1787527A (en) * | 1926-03-29 | 1931-01-06 | Huck Axle Corp | Brake for automotive vehicles |
| GB383369A (en) * | 1931-10-08 | 1932-11-17 | Henry Norton Skerrett | Improvements in brakes |
| US1996724A (en) * | 1930-06-16 | 1935-04-02 | Metropolitan Eng Co | Brake |
| US2828835A (en) * | 1953-10-27 | 1958-04-01 | Westinghouse Freins & Signaux | Transversely expanding type wheel brake |
| CN207961333U (en) * | 2017-12-28 | 2018-10-12 | 中国船舶重工集团公司第七一0研究所 | A kind of bidirectional locking mechanism based on friction voussoir |
| CN109630574A (en) * | 2018-12-30 | 2019-04-16 | 河北百龙汽车配件制造有限公司 | It is bonded drum type braking device step by step |
| CN110454520A (en) * | 2019-07-22 | 2019-11-15 | 高邮市顺达动力机电有限公司 | A kind of novel three brake-shoes drum brake mechanism |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111731430A (en) * | 2020-07-29 | 2020-10-02 | 天津美派电动科技有限公司 | Drum brake device |
| CN111731430B (en) * | 2020-07-29 | 2024-04-30 | 天津美派电动科技有限公司 | Drum brake device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111365385B (en) | 2020-08-25 |
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Denomination of invention: A multi brake shoe drum brake disc Effective date of registration: 20211214 Granted publication date: 20200825 Pledgee: Laizhou Jinhui Financing Guarantee Co.,Ltd. Pledgor: LAIZHOU WEICHEN AUTO PARTS Co.,Ltd. Registration number: Y2021980014552 |
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Date of cancellation: 20220519 Granted publication date: 20200825 Pledgee: Laizhou Jinhui Financing Guarantee Co.,Ltd. Pledgor: LAIZHOU WEICHEN AUTO PARTS Co.,Ltd. Registration number: Y2021980014552 |
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