CN112324818B - Wedge brake - Google Patents
Wedge brake Download PDFInfo
- Publication number
- CN112324818B CN112324818B CN202011143161.8A CN202011143161A CN112324818B CN 112324818 B CN112324818 B CN 112324818B CN 202011143161 A CN202011143161 A CN 202011143161A CN 112324818 B CN112324818 B CN 112324818B
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- shoe
- brake
- wedge
- mounting plate
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 62
- 238000009434 installation Methods 0.000 claims description 40
- 230000007704 transition Effects 0.000 claims description 30
- 239000000428 dust Substances 0.000 claims description 24
- 230000007306 turnover Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010027339 Menstruation irregular Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/24—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
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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
- F16D65/09—Pivots or supporting members therefor
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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
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
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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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D2051/001—Parts or details of drum brakes
- F16D2051/003—Brake supports
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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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D2051/001—Parts or details of drum brakes
- F16D2051/005—Protective covers
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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
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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
- F16D2125/02—Fluid-pressure mechanisms
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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
- F16D2131/00—Overall arrangement of the actuators or their elements, e.g. modular construction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a wedge brake, which comprises a brake bottom plate, wherein the brake bottom plate comprises a bottom plate main body, a first reinforcing rib plate, a wheel cylinder mounting plate and a shoe connecting plate; a brake shoe assembly mounted on the brake base plate; the wheel cylinder assembly is arranged on the braking bottom plate and comprises an adjusting wedge block and an air chamber; the adjusting wedge block is arranged above the wheel cylinder mounting plate, a round positioning block embedded into a round through hole in the middle of the wheel cylinder mounting plate is arranged at the bottom end of the adjusting wedge block, and two sides of the adjusting wedge block are fixed with the two brake shoes through the cooperation of the wedge block fixing plate and the wedge block mounting plate. The invention has the advantages that: according to the wedge brake, through redesigning the brake bottom plate and the adjusting wedge blocks, the weight of the brake bottom plate is reduced, and the accuracy requirement for installing the adjusting wedge blocks is reduced on the basis of ensuring the structural strength of the brake bottom plate.
Description
Technical Field
The invention relates to an automobile brake, in particular to a wedge brake.
Background
Service brakes are one of the most important components in vehicle braking, and because of simple structure, reliable performance and low cost, conventional drum brakes are mostly used for load-carrying vehicles and buses adopting air brake systems in China at present: the brake chamber is powered, and the brake is transmitted to the brake shoe through the adjusting arm and the S cam shaft, so that the vehicle is braked, and in addition, most of the load-carrying vehicles use the manual adjusting arm, namely, the excessive brake clearance generated by friction plate abrasion is manually adjusted at an irregular period. The harm caused by the method is as follows: on the one hand, the braking force transmission route is very long, and the involved parts are very many, so that the braking force is lost, the braking reaction time is long, and the braking efficiency is low; on the other hand, the braking gap is manually adjusted, so that time and labor are wasted, the braking gaps of all wheel brakes are difficult to adjust to be consistent, the braking force of all wheels is inconsistent, the conditions of deviation, turning around, tail flicking and the like can occur during emergency braking, and the safety of people and vehicles is seriously threatened. In addition, because of the high cost and complex structure of disc brakes, many heavy truck enterprises wish to select a brake that is inexpensive, has high braking efficiency and high braking torque, and in this context, air wedge brakes have developed. The air wedge type brake realizes the rapid automatic adjustment of the friction plate and the brake drum through the air wedge type mechanism, can increase the contact area and the braking torque to have braking efficiency, and is simpler than the disc type brake in structure.
For example, in CN202690819U, a wedge type impact welding brake for heavy-duty vehicles is mentioned, which comprises a brake bottom plate, an impact welding shoe and a brake clearance automatic modulator, wherein the brake clearance automatic modulator and the brake bottom plate are fixedly connected by bolts; two impact welding shoe irons are arranged on the braking bottom plate and are connected with the braking bottom plate through a supporting shaft; the outside of the impact welding shoe is provided with a friction plate with different thickness, and the friction plate with different thickness is rigidly connected with the impact welding shoe through rivets. The thrust of the air chamber is converted into braking force through the wedge block of the self-regulator, so that the braking efficiency is high, the reaction is quicker, the required air chamber specification is smaller than that of a traditional drum brake, the air consumption is small, and the oil consumption is saved; two sets of automatic adjusting mechanisms for braking gaps are arranged in the self-adjuster, excessive gaps between the two shoe friction plates and the brake drum are respectively and automatically eliminated in the braking return process, the constant set gap of the whole automobile is always kept, and the braking safety is improved; the strength of the cast iron is improved by 30% compared with that of the cast iron, and the weight of the cast iron is reduced by more than 20%.
For such wedge brakes, certain drawbacks remain when in use: the connection between the brake clearance automatic modulator and the brake bottom plate adopts a bolt connection mode, so that the connection mode has higher precision requirements on the positions, the sizes and the like of the connection holes on the brake clearance automatic modulator and the brake bottom plate during processing, and has certain precision requirements on the installation positions and the like of the brake clearance automatic modulator, so that the assembly is troublesome; in addition, as for the structure of the brake pad, the shape of the structure is relatively single, and the processing is relatively convenient, but in order to ensure the structural strength of the brake pad, the thickness of the whole brake pad is relatively thick, and the weight of the corresponding brake pad is increased, so that the weight of the whole wedge brake is increased.
As another example, a floating single wedge brake for a light commercial vehicle is also mentioned in patent CN107237843 a. The brake system comprises only one wheel cylinder assembly, a brake air chamber for providing power and a return spring for returning, wherein the wheel cylinder assembly is fixedly arranged at the upper part of a brake bottom plate, the brake air chamber is directly arranged on the wheel cylinder assembly, the input end of the brake air chamber is connected with an external air source, and the output end of the brake air chamber is connected to the wheel cylinder assembly; the two brake shoe assemblies are connected through two return springs, and a floating structure is arranged on the brake bottom plate and is connected with the brake shoe assemblies in a matched mode. The brake has the advantages of compact structure, improved efficiency, light weight, improved response speed, better braking effect, and improved braking performance and reliability.
The wedge brake also has certain defects: the design of the brake bottom plate is also relatively single in its external structure, and the weight of the brake bottom plate is relatively heavy, otherwise, the structural strength of the brake bottom plate cannot be ensured.
Disclosure of Invention
The invention aims to provide a wedge brake which is light in weight and convenient to install.
In order to solve the technical problems, the technical scheme of the invention is as follows: a wedge brake is characterized in that: comprising
The brake bottom plate comprises a circular bottom plate body, a circular through hole is formed in the middle of the bottom plate body, so that the bottom plate body is circular, a plurality of mounting holes distributed along the circumferential direction of the bottom plate body are further formed in the bottom plate body, a first annular reinforcing rib plate extending vertically downwards is further connected to the circumferential outer wall of the bottom plate body, one side of the bottom plate body is defined as a wheel cylinder connecting side, the other side of the bottom plate body is defined as a shoe fixing side, a wheel cylinder mounting plate is connected to the position of the bottom plate body, located on the wheel cylinder connecting side, of the bottom plate body, and a shoe connecting plate is connected to the position of the bottom plate body, located on the shoe fixing side;
The wheel cylinder mounting plate is rectangular, one long side of the wheel cylinder mounting plate is connected with the bottom plate main body, a notch for connecting the wheel cylinder mounting plate is formed in the first reinforcing rib plate, the wheel cylinder mounting plate is positioned at two outer sides of two short sides and is connected with the second reinforcing rib plate, the second reinforcing rib plate is in a right-angle trapezoid shape, the length of the upper bottom of the second reinforcing rib plate is longer than that of the lower bottom, the second reinforcing rib plate is positioned at one side of the right-angle waist and is connected with the first reinforcing rib plate through arc transition, a first U-shaped transition surface and a second U-shaped transition surface which are sequentially connected are further arranged on the upper end face of the connecting part of the second reinforcing rib plate, the wheel cylinder mounting plate and the brake bottom plate, wherein the first U-shaped transition surface is an outer arc surface and is connected with the brake bottom plate, and the second U-shaped transition surface is an inner arc surface and is connected with the wheel cylinder mounting plate;
The wheel cylinder mounting plate is obliquely arranged, the inclination direction of the wheel cylinder mounting plate is gradually upward inclined from the connecting side of the wheel cylinder mounting plate and the bottom surface close to the first reinforcing rib plate is lower than the bottom surface of the bottom plate body, the top surface of the wheel cylinder mounting plate close to the first reinforcing rib plate is lower than the top surface of the bottom plate body, a circular through hole is further formed in the middle position of the wheel cylinder mounting plate, a plurality of connecting holes are further formed in the two sides of the circular through hole on the wheel cylinder mounting plate, an outwards protruding arc-shaped bulge is further formed in the middle position of the wheel cylinder mounting plate, which is far away from the bottom plate body, and corresponds to the circular through hole in the middle position of the wheel cylinder mounting plate, and an outwards bent arc-shaped surface is formed in the side of the wheel cylinder mounting plate, which is far away from the bottom plate body;
the shoe connecting plate comprises a pair of upper shoe mounting plates, lower shoe mounting plates and a middle connecting plate, wherein the upper shoe mounting plates, the lower shoe mounting plates and the middle connecting plate are distributed up and down;
A pair of first shoe mounting holes are formed in the upper shoe mounting plate and the lower shoe mounting plate, an inward concave arc-shaped groove is formed between the two first shoe mounting holes on the upper shoe mounting plate and the lower shoe mounting plate, an outward convex arc-shaped bulge is formed in the arc-shaped groove on the upper shoe mounting plate, so that the arc-shaped groove of the upper shoe mounting plate is in a W shape, all corners and end points of the W are arc-shaped, the lower shoe mounting plate is directly connected with the circumferential outer wall of the first reinforcing rib plate, two sides of the lower shoe mounting plate are in arc-shaped transitional connection with the first reinforcing rib plate, and arc-shaped transitional connection is adopted between the upper shoe mounting plate and the middle connecting plate;
The middle connecting plate is formed by directly extending upwards from a first reinforcing rib plate, two side end points at the bottom of the middle connecting plate extend to the middle positions of two sides of the bottom plate main body, the length of the top end surface of the middle connecting plate corresponds to that of the upper shoe mounting plate, and arc-shaped transitional connection is adopted between the two side end points at the top of the middle connecting plate and the two side end points at the bottom of the middle connecting plate;
The brake shoe assembly comprises a pair of arc-shaped brake shoes arranged on two sides of a brake bottom plate, a pair of fixing clamps which are distributed up and down are arranged on the inner wall of the brake shoes, a shoe fixing seat is connected to the outer side of one side of each brake shoe, a second shoe mounting hole which penetrates through the whole shoe fixing seat up and down is arranged on the shoe fixing seat, the second shoe mounting hole corresponds to the first shoe mounting hole, after the shoe shaft sequentially penetrates through the first shoe mounting hole on the upper shoe mounting plate, the second shoe mounting hole on the shoe fixing seat and the first shoe mounting hole on the lower shoe mounting plate, the movable fixing of one side of each brake shoe and the brake bottom plate is realized, a spring fixing shaft which is arranged vertically is also arranged on the inner side of the other side of each brake shoe, and the spring fixing shaft sequentially penetrates through the two fixing clamps from bottom to top and stretches out of the upper ends of the fixing clamps positioned on the upper side, and the two spring fixing shafts of the two brake shoes are connected through a return spring, so that the movable fixing of the other side of each brake shoe is realized;
the wheel cylinder assembly is arranged on the braking bottom plate and comprises an adjusting wedge block and an air chamber;
The adjusting wedge block is arranged above the wheel cylinder mounting plate, a circular positioning block embedded into a circular through hole in the middle of the wheel cylinder mounting plate is arranged at the bottom end of the adjusting wedge block, and two sides of the adjusting wedge block are fixed with two brake shoes through the cooperation of the wedge block fixing plate and the wedge block mounting plate;
The wedge fixing plate is a circular plate and is arranged at the middle position of the side end of the adjusting wedge through a connecting shaft, and the diameter of the wedge fixing plate is larger than that of the connecting shaft, so that an installation gap is formed between the wedge fixing plate and the adjusting wedge;
The wedge mounting plate comprises wedge connecting plates and shoe connecting plates which are distributed in parallel, a gap for inserting a wedge fixing plate is reserved between the wedge connecting plates and the shoe connecting plates, one sides of the wedge connecting plates and the shoe connecting plates, which are close to the brake shoe, are connected through a mounting plate to form a whole, the mounting plate is an arc-shaped plate bent towards the brake shoe, a C-shaped opening is formed in the middle position of one side of the wedge connecting plates, which is far away from the brake shoe, the inner wall of the C-shaped opening is attached to the circumferential outer wall of the connecting shaft, the upper side and the lower side of the wedge connecting plates are in an arc shape which is distributed oppositely, the circles of the arc edges of the upper side and the lower side of the wedge connecting plates are the same circle, the arc edges of the upper side and the lower side of the wedge connecting plates are also provided with first overturning structures which horizontally extend towards the direction of the adjusting wedge, the shoe connecting plate is formed by outwards bending two sides of a U-shaped plate to form a second turnover structure, a mounting through hole is formed in the middle of the U-shaped plate, a third turnover structure which is horizontally bent towards the direction of the wedge connecting plate is arranged on the upper side and the lower side of the mounting through hole on the U-shaped plate, a mounting bulge which is inserted into the mounting through hole of the U-shaped plate is arranged on the brake shoe, one side of the mounting bulge, which is close to the shoe connecting plate, is arc-shaped, an upper mounting plate which is positioned above the wedge mounting plate and a lower mounting plate which is positioned below the wedge mounting plate are arranged on the upper side and the lower side of the brake shoe, the outer sides of the mounting bulge are provided with a mounting hole respectively, after the mounting hole is penetrated through the upper mounting plate through a pin shaft, the mounting bulge penetrates through a gap between the connecting plate and the wedge connecting plate, finally, the relative fixation between the shoe connecting plate and the brake shoe is realized after the shoe connecting plate passes through the mounting hole on the lower mounting plate;
the air chamber is arranged below the wheel cylinder mounting plate and is fixed with the wheel cylinder mounting plate, and the air chamber is obliquely arranged.
Further, two arc-shaped limiting blocks protruding outwards are further arranged on the outer side of the circumference of the first reinforcing rib plate, and the two limiting blocks are located on two sides of the first reinforcing rib plate and located between the wheel cylinder mounting plate and the shoe connecting plate.
Furthermore, a waist-shaped weight-reducing groove is formed in the middle of the middle connecting plate.
Further, a plurality of third reinforcing rib plates connected with the fixing clamps are further arranged on the inner wall of the brake shoe, and the third reinforcing rib plates are vertically arranged.
Further, an anti-rotation gasket is further arranged on the upper shoe mounting plate and is fixed on the arc-shaped bulge of the upper shoe mounting plate through bolts, and two sides of the anti-rotation gasket extend above the two first shoe mounting holes on the upper shoe mounting plate.
Further, rectangular mounting grooves which are uniformly distributed along the circumferential outer wall of the wedge fixing plate are further formed in the circumferential outer surface of the wedge fixing plate, and the mounting grooves extend towards the inside of the wedge fixing plate, so that the circumferential outer wall of the wedge fixing plate forms an annular tooth-shaped structure.
Furthermore, the upper side and the lower side of one side of the wedge block connecting plate, which is close to the shoe connecting plate, are provided with retaining protrusions protruding towards the shoe connecting plate, and the retaining protrusions are in a conical shape.
Further, the bottom of the brake bottom plate is also provided with a dust cover, the dust cover is composed of a left dust cover and a right dust cover which are arranged in a split way, an upward protruding installation protrusion corresponding to the outer contour of the brake bottom plate is further arranged on the upper end face of the dust cover, the brake bottom plate is fixed on the installation protrusion through bolts, and a fourth flanging structure which is bent upwards is further arranged on the outer edge of the dust cover.
The invention has the advantages that: according to the wedge brake, the appearance structure of the brake bottom plate is redesigned, so that the weight of the brake bottom plate is reduced on the basis of ensuring the structural strength of the brake bottom plate, and the aim of reducing the weight of the whole wedge brake is fulfilled; for the installation of the adjusting wedge, the fixing with the brake shoe is realized through the matching of the wedge fixing plate and the wedge mounting plate, and the fixing is realized without opening bolt holes on the adjusting wedge and the brake shoe, so that the precision requirement for the installation of the adjusting wedge is reduced, and the installation of the adjusting wedge is facilitated.
The arc-shaped limiting blocks arranged on the outer sides of the circumferences of the first reinforcing rib plates are used for limiting and isolating the relative positions between the brake bottom plate and the brake shoes, so that the brake shoes are prevented from being in direct contact with the outer walls of the brake bottom plate, and relative friction between the brake shoes and the brake bottom plate during movement is avoided, and abrasion of the brake shoes and the brake bottom plate is avoided.
The waist-shaped weight-reducing groove is formed in the middle of the middle connecting plate, so that the weight of the middle connecting plate can be reduced, and a foundation is provided for the subsequent reduction of the weight of the whole wedge brake.
The third reinforcing rib plate arranged on the inner wall of the brake shoe is used for reinforcing the structural strength of the fixing clamp and ensuring the structural strength of the fixing clamp.
Through set up one and prevent changeing the gasket on last shoe mounting panel to spacing the top of two shoe shafts, can play certain prevent changeing the effect to two shoe shafts when stopping the shoe and not work, also in order to avoid the shoe shaft to pop out from the first shoe mounting hole on the last shoe mounting panel.
The design of the mounting groove on the circumferential outer surface of the wedge fixing plate enables the circumferential outer wall of the wedge fixing plate to form an annular tooth-shaped structure, so that the wedge fixing plate has certain elasticity, and the wedge fixing plate and the wedge mounting plate are convenient to install in a matched mode.
The retaining protrusion is additionally arranged on the outer side of the wedge connecting plate, so that when the wedge fixing plate is embedded into a gap between the wedge connecting plate and the shoe connecting plate, the relative position between the wedge fixing plate and the wedge connecting plate is limited, a certain gap is reserved between the wedge fixing plate and the wedge connecting plate, and relative friction caused by direct contact between the wedge fixing plate and the wedge connecting plate is avoided.
The dust cover arranged at the bottom end of the braking bottom plate plays a certain dust-proof role on the whole wedge brake, so that dust is prevented from entering the whole wedge brake from the bottom, and smooth operation of the wedge brake is prevented from being influenced.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic view of a wedge brake of the present invention.
Fig. 2 is an exploded view of the wedge brake of the present invention.
Fig. 3 is a schematic view of a brake pad in accordance with the present invention.
Fig. 4 is a top view of a brake pad in accordance with the present invention.
Fig. 5 is a cross-sectional view of A-A of fig. 4.
Fig. 6 is a schematic view of the installation and fitting of the adjusting wedge block in the present invention.
Fig. 7 is a bottom view of fig. 6.
FIG. 8 is a schematic view of a wedge mounting plate of the present invention.
Detailed Description
The following examples will provide those skilled in the art with a more complete understanding of the present invention and are not intended to limit the invention to the embodiments described.
A wedge brake as shown in fig. 1-8, comprising a brake bottom plate 1, a brake shoe assembly, a wheel cylinder assembly and a dust cover.
The brake bottom plate 1 comprises a circular bottom plate body 101, a circular through hole 102 is formed in the middle of the bottom plate body 101, so that the bottom plate body 101 is circular, a plurality of mounting holes 103 distributed along the circumferential direction of the bottom plate body 101 are further formed in the bottom plate body 101, a first annular reinforcing rib plate 104 extending vertically downwards is further connected to the circumferential outer wall of the bottom plate body 101, one side of the bottom plate body 101 is defined to be a wheel cylinder connecting side, the other side of the bottom plate body 101 is a shoe fixing side, a wheel cylinder mounting plate 106 is connected to the position of the bottom plate body 101, located on the wheel cylinder connecting side, of the bottom plate body 101, and a shoe connecting plate is connected to the position of the bottom plate body 101, located on the shoe fixing side.
Two outwards-protruding arc-shaped limiting blocks 105 are further arranged on the outer side of the circumference of the first reinforcing rib plate 104, the two limiting blocks 105 are located on two sides of the first reinforcing rib plate 104, the two limiting blocks 105 are respectively located between the wheel cylinder mounting plate 106 and the shoe connecting plate, and an arc-shaped transitional connection mode is adopted between the limiting blocks 105 and the first reinforcing rib plate 104. For the arc-shaped limiting block 105 arranged on the outer side of the circumference of the first reinforcing rib plate 104, the relative positions of the brake bottom plate 1 and the brake shoe 2 are limited and isolated, so that the brake shoe 2 is prevented from being in direct contact with the outer wall of the brake bottom plate 1, and relative friction between the brake shoe 2 and the brake bottom plate 1 is caused when the brake shoe 2 moves, and the service lives of the brake shoe 2 and the brake bottom plate 1 are reduced due to abrasion.
The wheel cylinder mounting plate 106 is rectangular, one long side of the wheel cylinder mounting plate 106 is connected with the bottom plate main body 101, simultaneously, the first reinforcing rib plate 104 is further provided with a notch for connecting the wheel cylinder mounting plate 106, two outer sides of the wheel cylinder mounting plate 106, which are positioned at two short sides, are respectively connected with the second reinforcing rib plate 107, the second reinforcing rib plate 107 is in a right-angle ladder shape, the length of the upper bottom of the second reinforcing rib plate 107 is longer than that of the lower bottom of the second reinforcing rib plate 107, one side of the waist of the second reinforcing rib plate 106, which is positioned at two right-angle sides, is connected with the first reinforcing rib plate 104 through an arc transition, a first U-shaped transition surface 108 and a second U-shaped transition surface 109 which are sequentially connected are further arranged on the upper end face of the joint of the second reinforcing rib plate 107, the wheel cylinder mounting plate 106 and the brake bottom plate 101, the side of the first U-shaped transition surface 108 and the second U-shaped transition surface 109 are positioned at one side of the brake bottom plate 101, the two sides of the first U-shaped transition surface 108 and the second U-shaped transition surface 109 are respectively positioned at two sides of the short sides of the wheel cylinder 106, the first U-shaped transition surface 108 is the first U-shaped transition surface and the first U-shaped transition surface 109 is the second U-shaped transition surface 109, and the first U-shaped transition surface is connected with the second U-shaped transition surface 109, and the first U-shaped transition surface 109 is the arc surface and the first U-shaped transition surface 101 is connected with the brake bottom plate 101.
The wheel cylinder mounting plate 106 is obliquely arranged, the inclination direction of the wheel cylinder mounting plate 106 is gradually upward inclined from the connection side of the wheel cylinder mounting plate 106 and the bottom plate main body 101, the bottom surface of the wheel cylinder mounting plate 106, which is close to the first reinforcing rib plate 104, is lower than the bottom surface of the bottom plate main body 101, the top surface of the wheel cylinder mounting plate 106, which is close to the first reinforcing rib plate 104, is lower than the top surface of the bottom plate main body 101, a circular through hole 110 is further arranged at the middle position of the wheel cylinder mounting plate 106, a plurality of connecting holes 111 are further arranged on two sides of the circular through hole 110 on the wheel cylinder mounting plate 106, an outwards protruding arc-shaped bulge 112 is further arranged at the middle position of the wheel cylinder mounting plate 106, which is far away from the bottom plate main body 101, the arc-shaped bulge 112 corresponds to the circular through hole 110 at the middle position of the wheel cylinder mounting plate 106, and the arc-shaped bulge 112 is designed to be matched with the circular through hole 110, so that the structural strength of the circular through hole 110 is reinforced, and the unstable strength caused by the fact that the edge position of the circular through hole 110, which is close to the wheel cylinder mounting plate 106, is far from the bottom plate main body 101, is provided with an outwards bent arc-shaped surface 113.
The shoe connecting plate includes a pair of upper shoe mounting plates 121 and lower shoe mounting plates 122 distributed up and down, and a middle connecting plate 123 connecting the upper shoe mounting plates 121 and the lower shoe mounting plates 122.
The upper shoe mounting plate 121 and the lower shoe mounting plate 122 are provided with a pair of first shoe mounting holes 124, and simultaneously, an arc-shaped groove 125 which is concave inwards towards the upper shoe mounting plate 121 or the lower shoe mounting plate 122 is arranged between the two first shoe mounting holes 124 on the upper shoe mounting plate 121 and the lower shoe mounting plate 122, arc-shaped transition is formed between the arc-shaped groove 125 and the upper shoe mounting plate 121 or the lower shoe mounting plate 122, an arc-shaped bulge 126 which protrudes outwards is further arranged in the arc-shaped groove 125 on the upper shoe mounting plate 121, so that the arc-shaped groove 125 of the upper shoe mounting plate 121 is in a W shape as a whole, all corners and end points of the W are arc-shaped, the lower shoe mounting plate 122 is directly connected with the circumferential outer wall of the first reinforcing rib plate 104, two sides of the lower shoe mounting plate 122 are in arc-shaped transition connection with the first reinforcing rib plate 104, and arc-shaped transition connection is adopted between the upper shoe mounting plate 121 and the middle connecting plate 123.
An anti-rotation gasket 127 is further arranged on the upper shoe mounting plate 121, the anti-rotation gasket 127 is fixed on the arc-shaped bulge 126 of the upper shoe mounting plate 121 through a bolt, a threaded blind hole for accommodating the fixing of the anti-rotation gasket 127 is formed in the arc-shaped bulge 126, a single-lug stop washer 128 is further arranged between a nut of the bolt and the anti-rotation gasket 127, and the arrangement of the single-lug stop washer 128 is used for ensuring the fixing stability of the anti-rotation gasket 127, and two sides of the anti-rotation gasket 127 extend above the two first shoe mounting holes 124 on the upper shoe mounting plate 121. By providing the anti-rotation washer 127 on the upper shoe mounting plate 121, the upper sides of the two shoe shafts 201 are limited, so that a certain anti-rotation effect can be achieved on the two shoe shafts 201 when the brake shoe 2 does not work, and the shoe shafts 201 are prevented from being ejected from the first shoe mounting holes 124 on the upper shoe mounting plate 121.
The middle connecting plate 123 is directly formed by upward extension of the first reinforcing rib plate 104, two side end points at the bottom position of the middle connecting plate 123 extend to the middle positions of two sides of the bottom plate main body 101, the length of the top end surface of the middle connecting plate 123 corresponds to the length of the upper shoe mounting plate 121, the length of the top end surface of the middle connecting plate 123 is slightly larger than the length of the upper shoe mounting plate 121, and arc transition connection is adopted between the two side end points at the top position of the middle connecting plate 123 and the two side end points at the bottom position of the middle connecting plate 123.
A waist-shaped weight-reducing groove 129 is also provided at a central position of the intermediate connection plate 123, and the weight-reducing groove 129 extends in the radial direction of the floor main body 1. The waist-shaped weight-reducing groove 129 is formed in the middle of the middle connecting plate 123, so that the weight of the middle connecting plate 123 is reduced on the basis of guaranteeing the structural strength of the middle connecting plate 123, and a basis is provided for subsequently reducing the weight of the whole wedge brake.
The brake shoe assembly comprises a pair of arc-shaped brake shoes 2 arranged on two sides of the brake bottom plate 1, a pair of fixing clamps 202 which are distributed up and down are arranged on the inner wall of the brake shoes 2, two fixing clamps 202 are positioned in the middle of the brake shoes 2, the fixing clamps 202 extend along the inner wall direction of the brake shoes, and four fixing clamps 202 on the two brake shoes 2 are matched together to clamp the brake bottom plate 1.
The outer side of one side of the brake shoe 2 is connected with a shoe fixing seat 203, the shoe fixing seat 203 is positioned in the middle of the brake shoe 2, the length of the side end of the brake shoe 2 is longer than that of the shoe fixing seat 203, the shoe fixing seat 203 and the brake shoe 2 are in arc transition connection, a second shoe mounting hole 204 which vertically penetrates through the whole shoe fixing seat 203 is arranged on the shoe fixing seat 203, the second shoe mounting hole 204 corresponds to the first shoe mounting hole 124, a cylindrical shoe shaft 201 sequentially penetrates through the first shoe mounting hole 124 on the upper shoe mounting plate 121, the second shoe mounting hole 204 on the shoe fixing seat 203 and the first shoe mounting hole 124 on the lower shoe mounting plate 122, the upper side of the shoe shaft 201 is limited by an anti-rotation gasket 127, the second shoe mounting hole 204 penetrates through the first shoe mounting hole 124 on the lower shoe mounting plate 122, the outer wall of the upper and the lower shoe shaft 201 is sleeved with a circular shaft O-shaped shoe, and the outer wall of the shoe shaft is sleeved with an annular groove O-shaped shoe shaft.
The inner side of the other side of the brake shoe 2 is also provided with a vertically arranged spring fixing shaft 205, after the spring fixing shaft 205 sequentially passes through the two fixing clamps 202 from bottom to top, the spring fixing shaft 205 extends out of the upper end of the fixing clamp 202 positioned at the upper side, a through hole for allowing the spring fixing shaft 205 to pass through is formed in the fixing clamp 202, the bottom end of the spring fixing shaft 205 is provided with a pier head structure with a size larger than that of the through hole on the fixing clamp 202, the outer wall of the circumference of one section of the spring fixing shaft 205 extending out of the fixing clamp 202 positioned at the upper side is also provided with a first annular groove and a second annular groove which are distributed up and down, a limiting gasket is embedded in the second annular groove, the limiting gasket is larger than the area of the through hole on the fixing clamp 202, and is matched with the pier head structure at the bottom end of the spring fixing shaft 205 through the limiting gasket so as to limit the relative position between the spring fixing shaft 205 and the fixing clamp 202, the spring fixing shaft 205 is prevented from moving up and down in the vertical direction, the two spring fixing shafts 205 are connected through a return spring 206, and the return springs 206 are hooked in the first annular grooves on the spring fixing shafts 205, so that the two brake shoes 2 are relatively fixed at the other side.
A plurality of third reinforcing ribs 207 connected with the fixing clips 202 are further arranged on the inner wall of the brake shoe 2, the third reinforcing ribs 207 are vertically arranged, the third reinforcing ribs 207 are in a right-angle triangle shape, and one side edge of the right angle formed by the third reinforcing ribs 207 is fixed on the inner wall of the brake shoe 2. The third reinforcing rib plate 207 arranged on the inner wall of the brake shoe 2 is designed to strengthen the structural strength of the joint of the fixing clip 202 and the brake shoe 2 and ensure the stability of the fixing clip 202, while the triangular third reinforcing rib plate 207 is designed to ensure the stability of the joint of the fixing clip 202 and the brake shoe 2 by utilizing the characteristic of stable triangular structure.
The wheel cylinder assembly is arranged on the braking bottom plate 1 and comprises an adjusting wedge block 3 and an air chamber 4, wherein the adjusting wedge block 3 is arranged above the wheel cylinder mounting plate 106, a circular positioning block 301 embedded into a circular through hole 110 in the middle position of the wheel cylinder mounting plate 106 is arranged at the bottom end of the adjusting wedge block 3, and two sides of the adjusting wedge block 3 are fixed with two brake shoes 2 through the cooperation of a wedge block fixing plate 303 and a wedge block mounting plate 304.
The wedge fixing plate 303 is a circular plate which is installed at a middle position of a side end of the adjusting wedge 3 through a connecting shaft, and the diameter of the wedge fixing plate 303 is larger than that of the connecting shaft, so that an installation gap 305 is formed between the wedge fixing plate 303 and the adjusting wedge 3.
Rectangular mounting grooves uniformly distributed along the circumferential outer wall of the wedge fixing plate 303 are also provided on the circumferential outer surface of the wedge fixing plate 303, and the mounting grooves extend toward the inside of the wedge fixing plate 303, so that the circumferential outer wall of the wedge fixing plate 303 forms an annular tooth-shaped structure. For the design of the mounting groove on the circumference surface of the wedge fixing plate 303, the circumference outer wall of the wedge fixing plate 303 forms an annular tooth-shaped structure, so that the wedge fixing plate 303 has certain elasticity, and the wedge fixing plate 303 and the wedge mounting plate 304 are convenient to install in a matching way, so that a certain fine adjustment function is realized.
The wedge mounting plate 304 comprises a wedge connecting plate 306 and a shoe connecting plate 307 which are distributed in parallel, a gap for accommodating the insertion of the wedge fixing plate 303 is reserved between the wedge connecting plate 306 and the shoe connecting plate 307, one sides of the wedge connecting plate 306 and the shoe connecting plate 307, which are close to the brake shoe 2, are connected into a whole through a mounting plate 308, and the mounting plate 308 is an arc-shaped plate bent towards the brake shoe 2.
A C-shaped opening 309 is arranged at the middle part of one side of the wedge connecting plate 306 far away from the brake shoe 2, the inner wall of the C-shaped opening 309 is attached to the circumferential outer wall of the connecting shaft, the upper side and the lower side of the wedge connecting plate 306 are in an arc shape which is distributed oppositely, the circles of the arc edges of the upper side and the lower side of the wedge connecting plate 306 are the same, the arc edges of the upper side and the lower side of the wedge connecting plate 306 are provided with a first turnover structure 310 which extends horizontally to adjust the wedge direction, the shoe connecting plate 307 is formed after the two sides of a U-shaped plate are bent outwards to form a second turnover structure, the middle part of the U-shaped plate is provided with a mounting through hole 311, the upper side and the lower side of the U-shaped plate which are positioned on the mounting through hole 311 are provided with a third turnover structure 312 which bends horizontally to the wedge connecting plate 306, the brake shoe 2 is also provided with a mounting protrusion 313 which is inserted into the mounting through hole 311 of the U-shaped plate, the side of the installation bulge 313, which is close to the shoe connecting plate 307, is arc-shaped, the upper side and the lower side of the installation bulge 313 on the brake shoe 2 are also provided with an upper installation plate 314 positioned above the wedge installation plate 304 and a lower installation plate 315 positioned below the wedge installation plate 304, the outer sides of the installation bulge 313 on the upper installation plate 314 and the lower installation plate 315 are respectively provided with an installation hole, a pin shaft passes through the installation holes on the upper installation plate 314 and then passes through a gap between the wedge connection plate 306 and the shoe connection plate 307, finally, the relative fixation between the shoe connection plate 307 and the brake shoe 2 is realized after passing through the installation holes on the lower installation plate 315, the upper installation plate 314 and the lower installation plate 315 are fixed with the fixing clamp 202 through bolts, and the connection mode is adopted, so that the fine adjustment of the positions of the upper installation plate 314 and the lower installation plate 315 can be carried out during installation, to reduce the machining accuracy.
The upper and lower sides of the wedge connecting plate 306 near the side of the shoe connecting plate 307 are also provided with a holding protrusion 317 protruding toward the shoe connecting plate 307, and the holding protrusion 317 has a tapered shape. By additionally arranging the retaining protrusion 317 on the outer side of the wedge connecting plate 306, when the wedge fixing plate 303 is embedded into the gap between the wedge connecting plate 306 and the shoe connecting plate 307, the relative position between the wedge fixing plate 303 and the wedge connecting plate 306 is limited, so that a certain gap is reserved between the wedge fixing plate 303 and the wedge connecting plate 306, and the relative friction caused by direct contact between the wedge fixing plate 303 and the wedge connecting plate 306 is avoided.
The air chamber 4 is arranged below the wheel cylinder mounting plate 106 and is fixedly connected with the mounting hole 111 on the wheel cylinder mounting plate 106 through bolts, the air chamber 4 is vertically arranged, the whole air chamber 4 is obliquely arranged, and the inclination direction of the air chamber 4 is gradually far away from the wheel cylinder mounting plate 106 from the joint of the air chamber 4 and the wheel cylinder mounting plate 106.
The dust cover is arranged at the bottom end of the brake bottom plate 1, consists of a left dust cover 502 and a right dust cover 501 which are arranged in a split way, an upward-protruding installation protrusion 503 corresponding to the outer contour of the brake bottom plate 1 is further arranged on the upper end face of the dust cover, a plurality of fixing holes which are in one-to-one correspondence with the installation holes 103 on the brake bottom plate 1 are arranged on the installation protrusion 503, bolts penetrate through the installation holes 103 on the brake bottom plate 1 and the fixing holes on the installation protrusion 503 and then are locked by nuts, so that the relative fixation between the brake bottom plate 1 and the dust cover is realized, two through holes 504 for fixing the shoe holding shafts 201 are further arranged on the installation protrusion 503, and a fourth flanging structure 505 which is bent upwards is further arranged on the outer edge of the dust cover. The dust cover arranged at the bottom end of the brake bottom plate 1 plays a certain role in dust prevention for the whole wedge brake, so that dust is prevented from entering the whole wedge brake from the bottom, and the smooth operation of the wedge brake is prevented.
According to the wedge brake, the appearance structure of the brake bottom plate is redesigned, so that the weight of the brake bottom plate is reduced on the basis of ensuring the structural strength of the brake bottom plate, and the aim of reducing the weight of the whole wedge brake is fulfilled; for the installation of the adjusting wedge, the fixing with the brake shoe is realized through the matching of the wedge fixing plate and the wedge mounting plate, and the fixing is realized without opening bolt holes on the adjusting wedge and the brake shoe, so that the precision requirement for the installation of the adjusting wedge is reduced, and the installation of the adjusting wedge is facilitated.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A wedge brake, characterized by: comprising
The brake bottom plate comprises a circular bottom plate body, a circular through hole is formed in the middle of the bottom plate body, so that the bottom plate body is circular, a plurality of mounting holes distributed along the circumferential direction of the bottom plate body are further formed in the bottom plate body, a first annular reinforcing rib plate extending vertically downwards is further connected to the circumferential outer wall of the bottom plate body, one side of the bottom plate body is defined as a wheel cylinder connecting side, the other side of the bottom plate body is defined as a shoe fixing side, a wheel cylinder mounting plate is connected to the position of the bottom plate body, located on the wheel cylinder connecting side, of the bottom plate body, and a shoe connecting plate is connected to the position of the bottom plate body, located on the shoe fixing side;
Two arc-shaped limiting blocks protruding outwards are further arranged on the outer side of the circumference of the first reinforcing rib plate, and the two limiting blocks are located on two sides of the first reinforcing rib plate and located between the wheel cylinder mounting plate and the shoe connecting plate;
The wheel cylinder mounting plate is rectangular, one long side of the wheel cylinder mounting plate is connected with the bottom plate main body, a notch for connecting the wheel cylinder mounting plate is formed in the first reinforcing rib plate, the wheel cylinder mounting plate is positioned at two outer sides of two short sides and is connected with the second reinforcing rib plate, the second reinforcing rib plate is in a right-angle trapezoid shape, the length of the upper bottom of the second reinforcing rib plate is longer than that of the lower bottom, the second reinforcing rib plate is positioned at one side of the right-angle waist and is connected with the first reinforcing rib plate through arc transition, a first U-shaped transition surface and a second U-shaped transition surface which are sequentially connected are further arranged on the upper end face of the connecting part of the second reinforcing rib plate, the wheel cylinder mounting plate and the brake bottom plate, wherein the first U-shaped transition surface is an outer arc surface and is connected with the brake bottom plate, and the second U-shaped transition surface is an inner arc surface and is connected with the wheel cylinder mounting plate;
The wheel cylinder mounting plate is obliquely arranged, the inclination direction of the wheel cylinder mounting plate is gradually upward inclined from the connecting side of the wheel cylinder mounting plate and the bottom surface close to the first reinforcing rib plate is lower than the bottom surface of the bottom plate body, the top surface of the wheel cylinder mounting plate close to the first reinforcing rib plate is lower than the top surface of the bottom plate body, a circular through hole is further formed in the middle position of the wheel cylinder mounting plate, a plurality of connecting holes are further formed in the two sides of the circular through hole on the wheel cylinder mounting plate, an outwards protruding arc-shaped bulge is further formed in the middle position of the wheel cylinder mounting plate, which is far away from the bottom plate body, and corresponds to the circular through hole in the middle position of the wheel cylinder mounting plate, and an outwards bent arc-shaped surface is formed in the side of the wheel cylinder mounting plate, which is far away from the bottom plate body;
the shoe connecting plate comprises a pair of upper shoe mounting plates, lower shoe mounting plates and a middle connecting plate, wherein the upper shoe mounting plates, the lower shoe mounting plates and the middle connecting plate are distributed up and down;
The upper shoe mounting plate and the lower shoe mounting plate are provided with a pair of first shoe mounting holes, an inward concave arc-shaped groove is formed between the two first shoe mounting holes on the upper shoe mounting plate and the lower shoe mounting plate, an outward convex arc-shaped bulge is formed in the arc-shaped groove on the upper shoe mounting plate, so that the arc-shaped groove of the upper shoe mounting plate is in a W shape, each corner and each end point of the arc-shaped groove in the W shape are arc-shaped, the lower shoe mounting plate is directly connected with the circumferential outer wall of the first reinforcing rib plate, the two sides of the lower shoe mounting plate are in arc-shaped transitional connection with the first reinforcing rib plate, and the upper shoe mounting plate is in arc-shaped transitional connection with the middle connecting plate;
The middle connecting plate is formed by directly extending upwards from a first reinforcing rib plate, two side end points at the bottom of the middle connecting plate extend to the middle positions of two sides of the bottom plate main body, the length of the top end surface of the middle connecting plate corresponds to that of the upper shoe mounting plate, and arc-shaped transitional connection is adopted between the two side end points at the top of the middle connecting plate and the two side end points at the bottom of the middle connecting plate;
the middle part of the middle connecting plate is also provided with a waist-shaped weight-reducing groove;
The brake shoe assembly comprises a pair of arc-shaped brake shoes arranged on two sides of a brake bottom plate, a pair of fixing clamps which are distributed up and down are arranged on the inner wall of the brake shoes, a shoe fixing seat is connected to the outer side of one side of each brake shoe, a second shoe mounting hole which penetrates through the whole shoe fixing seat up and down is arranged on the shoe fixing seat, the second shoe mounting hole corresponds to the first shoe mounting hole, after the shoe shaft sequentially penetrates through the first shoe mounting hole on the upper shoe mounting plate, the second shoe mounting hole on the shoe fixing seat and the first shoe mounting hole on the lower shoe mounting plate, the movable fixing of one side of each brake shoe and the brake bottom plate is realized, a spring fixing shaft which is arranged vertically is also arranged on the inner side of the other side of each brake shoe, and the spring fixing shaft sequentially penetrates through the two fixing clamps from bottom to top and stretches out of the upper ends of the fixing clamps positioned on the upper side, and the two spring fixing shafts of the two brake shoes are connected through a return spring, so that the movable fixing of the other side of each brake shoe is realized;
the wheel cylinder assembly is arranged on the braking bottom plate and comprises an adjusting wedge block and an air chamber;
The adjusting wedge block is arranged above the wheel cylinder mounting plate, a circular positioning block embedded into a circular through hole in the middle of the wheel cylinder mounting plate is arranged at the bottom end of the adjusting wedge block, and two sides of the adjusting wedge block are fixed with two brake shoes through the cooperation of the wedge block fixing plate and the wedge block mounting plate;
The wedge fixing plate is a circular plate and is arranged at the middle position of the side end of the adjusting wedge through a connecting shaft, and the diameter of the wedge fixing plate is larger than that of the connecting shaft, so that an installation gap is formed between the wedge fixing plate and the adjusting wedge;
The wedge mounting plate comprises wedge connecting plates and shoe connecting plates which are distributed in parallel, a gap for inserting a wedge fixing plate is reserved between the wedge connecting plates and the shoe connecting plates, one sides of the wedge connecting plates and the shoe connecting plates, which are close to the brake shoe, are connected through a mounting plate to form a whole, the mounting plate is an arc-shaped plate bent towards the brake shoe, a C-shaped opening is formed in the middle position of one side of the wedge connecting plates, which is far away from the brake shoe, the inner wall of the C-shaped opening is attached to the circumferential outer wall of the connecting shaft, the upper side and the lower side of the wedge connecting plates are in an arc shape which is distributed oppositely, the circles of the arc edges of the upper side and the lower side of the wedge connecting plates are the same circle, the arc edges of the upper side and the lower side of the wedge connecting plates are also provided with first overturning structures which horizontally extend towards the direction of the adjusting wedge, the shoe connecting plate is formed by outwards bending two sides of a U-shaped plate to form a second turnover structure, a mounting through hole is formed in the middle of the U-shaped plate, a third turnover structure which is horizontally bent towards the direction of the wedge connecting plate is arranged on the upper side and the lower side of the mounting through hole on the U-shaped plate, a mounting bulge which is inserted into the mounting through hole of the U-shaped plate is arranged on the brake shoe, one side of the mounting bulge, which is close to the shoe connecting plate, is arc-shaped, an upper mounting plate which is positioned above the wedge mounting plate and a lower mounting plate which is positioned below the wedge mounting plate are arranged on the upper side and the lower side of the brake shoe, the outer sides of the mounting bulge are provided with a mounting hole respectively, after the mounting hole is penetrated through the upper mounting plate through a pin shaft, the mounting bulge penetrates through a gap between the connecting plate and the wedge connecting plate, finally, the relative fixation between the shoe connecting plate and the brake shoe is realized after the shoe connecting plate passes through the mounting hole on the lower mounting plate;
the air chamber is arranged below the wheel cylinder mounting plate and is fixed with the wheel cylinder mounting plate, and the air chamber is obliquely arranged.
2. The wedge brake of claim 1 wherein: and a plurality of third reinforcing rib plates connected with the fixing clamps are further arranged on the inner wall of the brake shoe, and the third reinforcing rib plates are vertically arranged.
3. The wedge brake of claim 1 wherein: the upper shoe mounting plate is also provided with an anti-rotation gasket which is fixed on the arc-shaped bulge of the upper shoe mounting plate through bolts, and two sides of the anti-rotation gasket are extended above the two first shoe mounting holes on the upper shoe mounting plate.
4. The wedge brake of claim 1 wherein: rectangular mounting grooves which are uniformly distributed along the circumferential outer wall of the wedge fixing plate are further formed in the circumferential outer surface of the wedge fixing plate, and extend towards the inside of the wedge fixing plate, so that the circumferential outer wall of the wedge fixing plate forms an annular tooth-shaped structure.
5. The wedge brake of claim 1 wherein: the upper side and the lower side of one side of the wedge block connecting plate, which is close to the shoe connecting plate, are also provided with retaining bulges protruding towards the direction of the shoe connecting plate, and the retaining bulges are in a conical shape.
6. The wedge brake of claim 1 wherein: the bottom of the brake bottom plate is also provided with a dust cover, the dust cover consists of a left dust cover and a right dust cover which are arranged in a split way, the upper end surface of the dust cover is also provided with an upward protruding installation bulge corresponding to the outer contour of the brake bottom plate, the brake bottom plate is fixed on the installation bulge through bolts, and the outer edge of the dust cover is also provided with a fourth flanging structure which is bent upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143161.8A CN112324818B (en) | 2020-10-23 | 2020-10-23 | Wedge brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143161.8A CN112324818B (en) | 2020-10-23 | 2020-10-23 | Wedge brake |
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| Publication Number | Publication Date |
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| CN112324818A CN112324818A (en) | 2021-02-05 |
| CN112324818B true CN112324818B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011143161.8A Active CN112324818B (en) | 2020-10-23 | 2020-10-23 | Wedge brake |
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| CN (1) | CN112324818B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931944B (en) * | 2021-11-02 | 2024-07-19 | 安徽安凯汽车股份有限公司 | Device for preventing forced starting of vehicle for hydrogen fuel vehicle |
| CN114962494B (en) * | 2022-05-10 | 2023-12-26 | 江苏凯迅达高铁传动技术开发有限公司 | Wheel cylinder for wedge brake |
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| US5275260A (en) * | 1989-09-18 | 1994-01-04 | Kelsey-Hayes Company | Dual mode drum brake assembly |
| JPH10110758A (en) * | 1996-10-08 | 1998-04-28 | Nisshinbo Ind Inc | Drum brake device |
| DE102008039672A1 (en) * | 2008-07-24 | 2010-02-04 | Becorit Gmbh | Brake pad for a disc brake and brake pad system |
| CN105715705A (en) * | 2016-05-04 | 2016-06-29 | 中国石油大学(华东) | High-energy friction brake |
| CN106321690A (en) * | 2016-08-31 | 2017-01-11 | 重庆中帝机械制造股份有限公司 | Aluminum-alloy wedge-type brake assembly |
| CN107237843A (en) * | 2017-08-03 | 2017-10-10 | 安吉亚太制动系统有限公司 | light commercial vehicle floating single wedge type brake |
| CN107889517A (en) * | 2015-08-06 | 2018-04-06 | 曙制动器工业株式会社 | Wedge cams formula brake |
| CN214007840U (en) * | 2020-10-23 | 2021-08-20 | 江苏凯迅达高铁传动技术开发有限公司 | Novel wedge type brake |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002188664A (en) * | 2000-12-22 | 2002-07-05 | Nisshinbo Ind Inc | Drum brake device |
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2020
- 2020-10-23 CN CN202011143161.8A patent/CN112324818B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5275260A (en) * | 1989-09-18 | 1994-01-04 | Kelsey-Hayes Company | Dual mode drum brake assembly |
| JPH10110758A (en) * | 1996-10-08 | 1998-04-28 | Nisshinbo Ind Inc | Drum brake device |
| DE102008039672A1 (en) * | 2008-07-24 | 2010-02-04 | Becorit Gmbh | Brake pad for a disc brake and brake pad system |
| CN107889517A (en) * | 2015-08-06 | 2018-04-06 | 曙制动器工业株式会社 | Wedge cams formula brake |
| CN105715705A (en) * | 2016-05-04 | 2016-06-29 | 中国石油大学(华东) | High-energy friction brake |
| CN106321690A (en) * | 2016-08-31 | 2017-01-11 | 重庆中帝机械制造股份有限公司 | Aluminum-alloy wedge-type brake assembly |
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