CN216922955U - Anti-lock drum brake shoe - Google Patents
Anti-lock drum brake shoe Download PDFInfo
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- CN216922955U CN216922955U CN202220211552.7U CN202220211552U CN216922955U CN 216922955 U CN216922955 U CN 216922955U CN 202220211552 U CN202220211552 U CN 202220211552U CN 216922955 U CN216922955 U CN 216922955U
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- brake shoe
- drum
- plate
- friction plate
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Abstract
The application provides an anti-lock drum brake shoe belongs to drum brake shoe field, this anti-lock drum brake shoe, including arrestment mechanism and row material mechanism, arrestment mechanism includes brake drum lid, braking backplate, branch, connecting rod, brake shoe, first friction disc and drive shaft, the brake drum lid rotates and connects on the axletree, braking backplate fixed mounting is on the axletree, braking backplate sets up braking drum lid is inboard, branch is fixed braking backplate surface, connecting seat one end threaded connection has the pressure cover, the pressure cover compresses tightly in the fixed plate surface, this anti-lock drum brake shoe can utilize and to have elastic friction disc to carry out the brake of initial stage, combines to carry out the second stage brake simultaneously with the rigidity friction disc afterwards and has played anti-lock effect promptly, has also improved holistic intensity and stability, the strength of the spring can be adjusted, and the use is convenient.
Description
Technical Field
The application relates to the field of drum brake shoes, in particular to an anti-lock drum brake shoe.
Background
The drum brake is characterized in that a brake transmission mechanism is utilized to enable a brake shoe to press a brake friction plate on the inner side of a brake drum, so that braking force is generated, wheels are decelerated or the vehicle stops within the shortest distance according to requirements, driving safety is guaranteed, and the vehicle can be parked reliably and cannot automatically slide.
Drum brake hoof is when using, because adopt the brake block directly to carry out the brake speed reduction with the brake drum, lead to the wheel locking to take place to sideslip easily, prior art has in the brake block inside and adds the spring messenger brake block slowly to compress tightly and brake on the brake drum surface, though can prevent to lock, the rigidity and the wholeness of brake block have reduced, when brake block and brake drum contact, powerful axial force is used in brake block and spring junction, thereby it is not hard up and crooked phenomenon reduction brake effect can appear in long-time use, and the elasticity of spring also can descend for a long time.
SUMMERY OF THE UTILITY MODEL
In order to remedy the above disadvantages, the present application provides an anti-lock drum brake shoe that solves the above-mentioned problems.
The application is realized as follows:
the application provides an anti-lock drum brake shoe, including arrestment mechanism and row material mechanism.
The brake mechanism comprises a brake drum cover, a brake back plate, a support rod, a connecting rod, brake shoes, first friction plates and a driving shaft, wherein the brake drum cover is rotatably connected to an axle, the brake back plate is fixedly arranged on the axle, the brake back plate is arranged on the inner side of the brake drum cover, the support rod is fixed on the surface of the brake back plate, one end of the connecting rod is rotatably connected to the support rod, the number of the brake shoes is two, the two brake shoes are symmetrically arranged on the surface of the brake back plate and are in clearance fit with the brake drum cover, one end, far away from the support rod, of the connecting rod is fixed on the surface of one end of each brake shoe, a brake crank arm is arranged at the other end of each brake shoe, a reset spring is connected between the two brake shoes, the first friction plates are fixed on the surfaces of the brake shoes, grooves are formed in the surfaces of the first friction plates, the driving shaft is rotatably connected to the surface of the brake back plate, a brake cam is fixedly mounted at one end of the driving shaft, and two ends of the brake cam are attached to the brake crank arm.
Adjustment mechanism includes connecting seat, fixed plate, slide bar, spring and second friction disc, the connecting seat is fixed the brake shoe surface, fixed plate both ends sliding connection be in on the connecting seat, the slide bar is equipped with a plurality of, the slide bar slides and runs through the fixed plate the brake shoe with between the recess on first friction disc surface, the spring housing is in on the slide bar, the spring both ends are supported respectively the brake shoe with the fixed plate surface, the second friction disc is fixed the slide bar is kept away from the one end of fixed plate, connecting seat one end threaded connection has the pressure cover, it compresses tightly to press the cover the fixed plate surface.
In the implementation process, when the anti-lock drum brake shoe works, the brake drum cover is rotationally connected to an axle, the brake back plate is fixedly arranged on the axle, one end of the driving shaft is in transmission connection with an automobile driving device, when the brake is started, the driving shaft drives the brake cam to rotate, the brake crank arms are pulled to two sides, the brake shoe starts to move towards the upper side and the lower side respectively, the second friction plate is extruded on the inner surface of the brake drum cover to perform initial braking, at the moment, the sliding rod at one end of the second friction plate compresses the spring, the second friction plate slowly approaches the surface of the first friction plate until the second friction plate enters the groove on the surface of the first friction plate, at the moment, the surface of the first friction plate and the brake drum cover start to perform secondary braking until the brake drum cover is stopped, when the elasticity of the spring is reduced and loosened, the pressing sleeve is rotated to compress the fixing plate towards the inner side of the connecting seat so as to compress the spring, the elasticity of the spring is improved, and the anti-lock drum brake shoe can perform initial braking by using the friction plate with elasticity, and then, the brake block is combined with a rigid friction plate and simultaneously braked at two stages, so that the anti-lock function is achieved, the integral strength and stability are improved, the strength of the spring can be adjusted, and the brake block is convenient to use.
In a specific embodiment, a support post is arranged on the surface of the brake shoe, and one end of the connecting rod, far away from the support rod, is sleeved on the support post.
In the implementation process, the support column is used for sleeving the connecting rod, and the connecting rod can rotate on the support column.
In a specific embodiment, a through hole is formed in the surface of the brake back plate, and one end of the driving shaft is slidably connected in the through hole.
In the implementation process, the through hole is used for driving the driving shaft to penetrate through the back plate to be in transmission connection with the driving device.
In a particular embodiment, the second friction plate has a width and thickness less than a width and depth of the groove.
In the implementation process, the second friction plate can be completely retracted into the groove.
In a specific embodiment, a clamping block is mounted on the sliding rod, and the clamping block abuts against one end of the spring.
In the above implementation, the latch is used to compress the spring.
In a specific embodiment, one end of the sliding rod, which is far away from the second friction plate, is provided with an anti-falling block.
In the implementation process, the anti-falling block prevents the sliding rod from being separated from the surface of the fixing plate.
In a specific embodiment, a hook is installed at one end of the brake shoe, and two ends of the return spring are respectively hung on the hook.
In the implementation process, the hook is used for hooking the spring.
In a specific embodiment, a stop lever is arranged on the surface of the brake back plate and presses against the surface of the return spring.
In the implementation process, the stop lever is used for supporting the reset spring to change the tension directions of the two ends of the reset spring, so that the brake shoe can be better retracted and reset.
In a specific embodiment, a nut is screwed on the surface of the strut and is pressed on the surface of the connecting rod.
In the implementation process, the screw cap is used for fixing one end of the connecting rod on the surface of the strut, one end of the connecting rod is sleeved on the strut, and then the screw cap is screwed to compress the connecting rod.
In a specific embodiment, through holes are also formed in two ends of the connecting rod, and the connecting rod is rotatably sleeved on the supporting rod and the supporting column through the through holes respectively.
Drawings
In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic view of an anti-lock drum brake shoe according to an embodiment of the present disclosure;
FIG. 2 is a first perspective structural view of a brake shoe according to an embodiment of the present disclosure;
FIG. 3 is a second perspective view of a brake shoe according to an embodiment of the present disclosure;
fig. 4 is a schematic surface structure diagram of a first friction plate according to an embodiment of the present disclosure.
In the figure: 100-a braking mechanism; 110-brake drum cover; 120-a brake backing plate; 122-a stop lever; 130-strut; 140-a connecting rod; 150-brake shoes; 151-brake crank arm; 152-a pillar; 1521-screw cap; 153-hook; 154-a return spring; 160-a first friction plate; 161-grooves; 170-a drive shaft; 171-a brake cam; 200-an adjustment mechanism; 210-a connecting seat; 211-pressing sleeve; 220-a fixed plate; 230-a slide bar; 231-a fixture block; 232-anti-drop block; 240-spring; 250-second friction plate.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.
Examples
Referring to fig. 1, the present application provides a technical solution: an anti-lock drum brake shoe includes a brake mechanism 100 and an adjustment mechanism 200, wherein the adjustment mechanism 200 is fixed inside the brake mechanism 100.
Referring to fig. 1, 2, 3 and 4, the brake mechanism 100 includes a brake drum cover 110, a brake back plate 120, a support rod 130, a connection rod 140, a brake shoe 150, a first friction plate 160 and a driving shaft 170, the brake drum cover 110 is rotatably connected to an axle, the brake back plate 120 is fixedly installed on the axle, the brake back plate 120 is disposed inside the brake drum cover 110, a through hole is formed on the surface of the brake back plate 120, one end of the driving shaft 170 is slidably connected in the through hole, a stop lever 122 is installed on the surface of the brake back plate 120, the stop lever 122 is pressed on the surface of a return spring 154, the stop lever 122 is used for supporting the return spring 154 to change the pulling direction of the two ends thereof, so that the brake shoe 150 is better retracted and reset, the support rod 130 is fixed on the surface of the brake back plate 120, the two ends of the connection rod 140 are also formed with through holes, the connection rod 140 is rotatably sleeved on the support rod 130 and the support rod 152 respectively, one end of the connection rod 140 is rotatably connected to the support rod 130, two brake shoes 150 are arranged, the two brake shoes 150 are symmetrically arranged on the surface of the brake back plate 120 and are in clearance fit with the brake drum cover 110, one end of the connecting rod 140, far away from the supporting rod 130, is fixed on the surface of one end of the brake shoe 150, the other end of the brake shoe 150 is provided with the brake crank arm 151, the surface of the brake shoe 150 is provided with the supporting rod 152, one end of the connecting rod 140, far away from the supporting rod 130, is sleeved on the supporting rod 152, the surface of the supporting rod 152 is in threaded connection with a nut 1521, the nut 1521 is tightly pressed on the surface of the connecting rod 140, one end of the brake shoe 150 is provided with a hook 153, two ends of the return spring 154 are respectively hung on the hook 153, a return spring 154 is connected between the two brake shoes 150, the first friction plate 160 is fixed on the surface of the brake shoe 150, the surface of the first friction plate 160 is provided with a groove 161, the driving shaft 170 is rotatably connected to the surface of the brake back plate 120, one end of the driving shaft 170 is fixedly provided with a brake cam 171, and both ends of the brake cam 171 are attached to the brake crank arms 151.
Referring to fig. 1, 3 and 4, the adjusting mechanism 200 includes a connecting base 210 and a fixing plate 220, the brake shoe comprises a sliding rod 230, a spring 240 and a second friction plate 250, wherein the connecting seat 210 is fixed on the surface of the brake shoe 150, two ends of the fixing plate 220 are slidably connected to the connecting seat 210, the sliding rod 230 is provided with a plurality of sliding rods 230, the sliding rod 230 slidably penetrates through the fixing plate 220, the brake shoe 150 and a groove 161 on the surface of the first friction plate 160, the spring 240 is sleeved on the sliding rod 230, two ends of the spring 240 respectively abut against the surfaces of the brake shoe 150 and the fixing plate 220, the second friction plate 250 is fixed at one end, far away from the fixing plate 220, of the sliding rod 230, a fixture block 231 is installed on the sliding rod 230 and abuts against one end of the spring 240, an anti-falling block 232 is installed at one end, far away from the second friction plate 250, the width and the thickness of the second friction plate 250 are smaller than the width and the depth of the groove 161, a pressing sleeve 211 is in threaded connection with one end of the connecting seat 210, and the pressing sleeve 211 is tightly pressed on the surface of the fixing plate 220.
Specifically, this anti-lock drum brake shoe's theory of operation: when the brake drum cover 110 is in operation, the brake drum cover 110 is rotatably connected to an axle, the brake back plate 120 is fixedly mounted on the axle, one end of the driving shaft 170 is in transmission connection with a vehicle driving device, when the brake is started, the driving shaft 170 drives the brake cam 171 to rotate, the brake crank arms 151 are pulled out to two sides, the brake shoes 150 start to move respectively to the upper side and the lower side, the second friction plate 250 is extruded on the inner surface of the brake drum cover 110 to perform initial braking, at this time, the sliding rod 230 at one end of the second friction plate 250 compresses the spring 240, the second friction plate 250 gradually approaches the surface of the first friction plate 160 until the second friction plate 250 enters the groove 161 on the surface of the first friction plate 160, at this time, the surface of the first friction plate 160 and the brake drum cover 110 start to perform secondary braking until the brake drum cover 110 is braked, when the spring 240 elastically descends and becomes loose, the rotating pressing sleeve 211 compresses the fixing plate 220 towards the inner side of the connecting base 210 to compress the spring 240, the elasticity of the spring 240 is improved.
The above embodiments are merely examples of the present application and are not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An anti-lock drum brake shoe, characterized by comprising
The brake mechanism (100), the brake mechanism (100) includes a brake drum cover (110), a brake back plate (120), a support rod (130), a connecting rod (140), brake shoes (150), a first friction plate (160) and a driving shaft (170), the brake drum cover (110) is rotatably connected to an axle, the brake back plate (120) is fixedly mounted on the axle, the brake back plate (120) is arranged on the inner side of the brake drum cover (110), the support rod (130) is fixed to the surface of the brake back plate (120), one end of the connecting rod (140) is rotatably connected to the support rod (130), the number of the brake shoes (150) is two, the two brake shoes (150) are symmetrically arranged on the surface of the brake back plate (120) and are in clearance fit with the brake drum cover (110), and one end, far away from the support rod (130), of the connecting rod (140) is fixed to the surface of one end of the brake shoes (150), a brake crank arm (151) is mounted at the other end of each brake shoe (150), a return spring (154) is connected between every two brake shoes (150), the first friction plate (160) is fixed on the surface of each brake shoe (150), a groove (161) is formed in the surface of the first friction plate (160), the driving shaft (170) is rotatably connected to the surface of the brake back plate (120), a brake cam (171) is fixedly mounted at one end of the driving shaft (170), and two ends of the brake cam (171) are attached to the brake crank arm (151);
the adjusting mechanism (200) comprises a connecting seat (210), a fixing plate (220), a sliding rod (230), a spring (240) and a second friction plate (250), the connecting seat (210) is fixed on the surface of the brake shoe (150), two ends of the fixing plate (220) are connected to the connecting seat (210) in a sliding manner, the sliding rod (230) is provided with a plurality of sliding rods, the sliding rods (230) penetrate through the fixing plate (220), the brake shoe (150) and a groove (161) on the surface of the first friction plate (160) in a sliding manner, the spring (240) is sleeved on the sliding rods (230), two ends of the spring (240) respectively abut against the surfaces of the brake shoe (150) and the fixing plate (220), the second friction plate (250) is fixed at one end, far away from the fixing plate (220), of the sliding rod (230), one end of the connecting seat (210) is in threaded connection with a pressing sleeve (211), the pressing sleeve (211) is pressed on the surface of the fixing plate (220).
2. An anti-lock drum brake shoe according to claim 1, wherein said brake shoe (150) is surface-mounted with a strut (152), and an end of said connecting rod (140) remote from said strut (130) is fitted over said strut (152).
3. An anti-lock drum brake shoe according to claim 1, wherein said back plate (120) is formed with a through hole in a surface thereof, and one end of said driving shaft (170) is slidably coupled in said through hole.
4. An anti-lock drum brake shoe according to claim 1, wherein said second friction plate (250) has a width and thickness less than the width and depth of said groove (161).
5. An anti-lock drum brake shoe according to claim 1, wherein said slide rod (230) is mounted with a latch (231), said latch (231) abutting against one end of said spring (240).
6. An anti-lock drum brake shoe according to claim 1, wherein said slide bar (230) is fitted with an anti-slip block (232) at an end remote from said second friction plate (250).
7. An anti-lock drum brake shoe according to claim 2, wherein said brake shoe (150) is provided with a hook (153) at one end thereof, and both ends of said return spring (154) are respectively hooked on said hook (153).
8. An anti-lock drum brake shoe according to claim 1, wherein said back plate (120) is surface-mounted with a blocking lever (122), said blocking lever (122) pressing against said return spring (154) surface.
9. An anti-lock drum brake shoe according to claim 2, wherein a nut (1521) is threadedly attached to a surface of said strut (152), said nut (1521) being pressed against a surface of said connecting rod (140).
10. An anti-lock drum brake shoe according to claim 2, wherein said connecting rod (140) is also provided with through holes at both ends thereof, and said connecting rod (140) is rotatably sleeved on said strut (130) and said strut (152) through said through holes, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220211552.7U CN216922955U (en) | 2022-01-25 | 2022-01-25 | Anti-lock drum brake shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220211552.7U CN216922955U (en) | 2022-01-25 | 2022-01-25 | Anti-lock drum brake shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216922955U true CN216922955U (en) | 2022-07-08 |
Family
ID=82265906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220211552.7U Active CN216922955U (en) | 2022-01-25 | 2022-01-25 | Anti-lock drum brake shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216922955U (en) |
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2022
- 2022-01-25 CN CN202220211552.7U patent/CN216922955U/en active Active
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