CN117345789A - Double-caliper pneumatic disc brake and axle assembly engineering mechanical axle - Google Patents

Double-caliper pneumatic disc brake and axle assembly engineering mechanical axle Download PDF

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Publication number
CN117345789A
CN117345789A CN202311478735.0A CN202311478735A CN117345789A CN 117345789 A CN117345789 A CN 117345789A CN 202311478735 A CN202311478735 A CN 202311478735A CN 117345789 A CN117345789 A CN 117345789A
Authority
CN
China
Prior art keywords
brake
piston body
caliper
rotating arm
double
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311478735.0A
Other languages
Chinese (zh)
Inventor
康中帝
陈明礼
康驹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Zhongdi Machinery Manufacturing Co ltd
Original Assignee
Chongqing Zhongdi Machinery Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Zhongdi Machinery Manufacturing Co ltd filed Critical Chongqing Zhongdi Machinery Manufacturing Co ltd
Priority to CN202311478735.0A priority Critical patent/CN117345789A/en
Publication of CN117345789A publication Critical patent/CN117345789A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
    • 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
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention discloses a double-clamp pneumatic disc brake, an axle assembly and an engineering mechanical axle, which comprise a brake disc, two brake clamps, an air chamber, an eccentric rotating arm mounting seat and a fixing plate, wherein the two brake clamps are arranged on the side of the brake disc, the fixing plate is fixedly arranged on an axle housing, brackets of the two brake clamps are respectively arranged on the fixing plate, movable clamps of the two brake clamps are respectively and slidably arranged on the brackets through guide shafts, the eccentric rotating arm mounting seat is fixed on the outer end face of the movable clamps, the eccentric rotating arm is Y-shaped, the air chamber is connected with the trunk end of the eccentric rotating arm, two branch ends of the eccentric rotating arm are respectively hinged on the eccentric rotating arm mounting seat through rotary pins, two branch ends of the eccentric rotating arm are respectively provided with protruding rollers which are movably arranged, the eccentric rotating arm is respectively and movably contacted with a piston body component of the double brake clamps through the rollers, and return springs are respectively arranged between a first friction plate of the double brake clamps and the movable clamps. The invention realizes simultaneous braking of the double brake calipers and automatic compensation of the friction plate, thereby improving the braking effect.

Description

Double-caliper pneumatic disc brake and axle assembly engineering mechanical axle
Technical Field
The invention relates to the field of motor vehicles, in particular to a double-clamp pneumatic disc brake, an axle assembly and an engineering mechanical axle.
Background
A brake is a mechanical part that stops or decelerates a moving part in a machine. Brakes are braking devices for vehicles, and brakes used for vehicles are almost all friction type and can be divided into two main types, drum type and disc type.
The disc brake is also called a disc brake and mainly comprises a brake disc, a brake caliper, a friction plate, a wheel cylinder and the like, and the brake friction plate and the brake disc rotating along with wheels are rubbed by applying pressure to the brake caliper, so that the purpose of braking is achieved.
At present, the hydraulic disc brake and the pneumatic disc brake are divided according to different power sources provided by the brake, and the pneumatic disc brake is widely applied to front wheel braking of a load truck, an engineering mechanical vehicle and a large bus. The working principle is that the air chamber on the brake caliper is inflated, the film piston of the air chamber pushes the push rod to extend, and the push rod pushes the mechanism in the brake caliper to enable the two pistons on the brake caliper body to move outwards, so that the friction plate clamps the brake disc to generate friction force, and vehicle braking is realized. However, the existing double-caliper pneumatic disc brake adopts two air chambers to respectively drive friction plates on a brake caliper to clamp a brake disc, and the double-caliper brake cannot act simultaneously due to reaction time difference when different air chambers brake, so that the braking effect is affected poorly, the steering of a vehicle is inflexible, and the improvement installation space and weight of a chassis brake are increased. And after long-term use, part of the material of the friction plate is lost due to friction, so that the friction plate is thinned, and the friction plate needs to move a longer distance.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a double-clamp pneumatic disc brake, an axle assembly and an engineering mechanical axle.
One of the purposes of the invention is that the adopted technical scheme is as follows:
the utility model provides a pneumatic disc brake of double cassette pincers, includes the brake disc, sets up the brake caliper in the brake disc side, be equipped with first friction disc and second friction disc in the brake caliper, still include an air chamber, an eccentric rocking arm, two eccentric rocking arm mount pad and fixed plate, fixed plate fixed mounting is on the axle housing, the support of two brake calipers is installed respectively on the fixed plate, the movable clamp of two brake calipers is in through guide shaft slidable mounting respectively on the support, the eccentric rocking arm mount pad is fixed the movable clamp outside terminal surface, the eccentric rocking arm is Y style of calligraphy, the air chamber with the backbone end of eccentric rocking arm links to each other, the two branch ends of eccentric rocking arm are equipped with the activity respectively and set up outstanding roller, the eccentric rocking arm pass through the roller respectively with the piston body subassembly movable contact of double brake pincers, the piston body subassembly all includes piston body and piston body mount pad, piston body sliding fit is in the piston body mount pad, the movable rocking arm of piston body mount pad is fixed on the brake caliper is equipped with the eccentric rocking arm, the eccentric rocking arm is equipped with the opposite to be equipped with one end pair of eccentric rocking arm, the eccentric rocking arm is equipped with the piston body and the piston body.
Further, the air chamber is mounted on the moving clamp through an air chamber mounting seat.
Further, the piston body includes screw rod, spiral cover, flat end cover, prevents changeing key, rand, torsional spring, spiral swivel, spring, prevents changeing card and spring spacing seat, spiral cover sliding fit is in the piston body mount pad, the one end of spiral cover pass through the rand with the flat end cover links to each other, flat end cover with the roller of eccentric rocking arm contacts, the torsional spring sets up the spiral cover with in the torsional spring mounting groove between the flat end cover, set up on the flat end cover and prevent changeing the key, the spiral cover other end cover is established the spiral swivel with the spring, the spring with the spiral swivel is installed through the spring spacing seat on the piston body mount pad, the spiral swivel with spiral cover intermittent type meshing, the screw thread fit is in the spiral cover, the screw rod extends the spiral cover, with the contact of the first friction disc of dual brake pincers, the extension end of screw rod sets up prevents changeing the card.
Further, a dust cover is further arranged, the dust cover is arranged outside the spring limiting seat, and the dust cover and the spring limiting seat are fixedly installed on the piston body installation seat.
Further, a key groove is formed in the side face of the flat end cover, an anti-rotation key is arranged in the key groove and fixedly mounted on the piston body mounting seat, and a torsion spring mounting groove and a clamping ring groove are formed in the inner side of the flat end cover.
Further, one side of the spiral rotating sleeve is provided with a stepped inner hole matched with the butt end cover, the stepped inner hole is provided with a clamping ring groove and a torsion spring mounting groove, and the other side of the spiral rotating sleeve is provided with a meshing tooth meshed with the spiral rotating ring.
Further, the two branch ends of the eccentric rotating arm are respectively provided with a major arc groove, the major arc grooves are eccentrically arranged on the eccentric rotating arm, and the rollers are arranged in the major arc grooves.
Further, the fixed plate adopts integrated into one piece's rectangular plate, the mounting hole that is used for installing on the axle housing is seted up at rectangular plate center, the rectangular plate is equipped with two sets of support mounting holes that set up symmetrically from top to bottom.
The second purpose of the invention is that the adopted technical scheme is as follows:
the axle assembly with the double-clamp brake comprises an axle housing, and the brake and the hub which are arranged on the axle housing, wherein the brake adopts the double-clamp pneumatic disc brake.
The third purpose of the invention is that the adopted technical scheme is as follows:
the engineering mechanical axle with the double-clamp brake comprises an axle housing and the brake arranged on the axle housing, wherein the brake adopts any one of the double-clamp pneumatic disc brake.
The technical scheme has the following beneficial effects:
the invention has simple structure, drives an eccentric rotary arm to rotate through one air chamber, and respectively drives the double brake calipers to act by utilizing the two branch ends of the eccentric rotary arm, thereby ensuring that the friction plates and the brake discs of the two brake calipers are braked and stressed simultaneously, ensuring that the automobile brakes more stably, improving the braking effect, shortening the braking distance of the brake by about 30 percent compared with the traditional braking distance, simultaneously avoiding the problem of steering failure of the vehicle in the steering process, reducing the transformation of the chassis space, reducing the weight and lowering the cost.
The piston body includes screw rod, spiral cover, flat end cover, prevents changeing key, rand, torsional spring, spiral swivel, spring, prevents changeing card and the spacing seat of spring, and this structure has compensatied after long-time friction damages the attenuate of first, second friction disc, carries out automatic compensation to first, second friction disc travel distance. When the eccentric rotating arm drives the roller to push the flat end cover, the flat end cover has no component force, the braking force of the air chamber is reduced, and the radial stress ensures that the piston body component operates more stably.
The fixing plate adopts a symmetrical mounting hole structure, so that the two brake calipers are symmetrically stressed.
The axle assembly adopts the double-clamp pneumatic disc brake to enable the automobile to be braked more stably, and the automobile driving performance is improved.
The engineering machinery axle adopts the double-clamp pneumatic disc brake to enable the braking of the mechanical vehicle to be more stable.
Further description is provided below with reference to the drawings and detailed description.
Drawings
FIG. 1 is a schematic structural view of embodiment 1;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a top view of FIG. 2 with one brake disc removed;
fig. 4 is a schematic view of the piston body assembly of embodiment 1;
fig. 5 is a schematic structural view of a fixing plate according to embodiment 1;
FIG. 6 is a schematic structural view of embodiment 2;
fig. 7 is a side view of fig. 6.
In the drawing, 1 is a brake disc, 2 is a brake caliper, 2-1 is a bracket, 2-2 is a movable clamp, 2-3 is a pressing plate, 3 is a first friction plate, 4 is an air chamber, 5 is an eccentric rotating arm, 5-1 is a roller, 5-2 is a rotating pin, 6 is an eccentric rotating arm mounting seat, 7 is a fixed plate, 7-1 is a mounting hole, 7-2 is a bracket mounting hole, 7-3 is a lightening hole, 8 is a piston body, 8-1 is a screw rod, 8-2 is a spiral rotating sleeve, 8-3 is a flat-head end cover, 8-4 is an anti-rotating key, 8-5 is a clamping ring, 8-6 is a torsion spring, 8-7 is a spiral rotating ring, 8-8 is a spring, 8-9 is an anti-rotating clamp, 8-10 is a spring limiting seat, 8-11 is a dust cover, 9 is a piston body mounting seat, 10 is a hub, 11 is a bridge shell, 12 is a return spring, 13 is a mounting seat, and 14 is a second friction plate.
Detailed Description
Specific example 1:
referring to fig. 1 to 5, a dual caliper pneumatic disc brake comprises a brake disc 1, two brake calipers 2 arranged on the side of the brake disc 1, a first friction plate 3 and a second friction plate are arranged in the two brake calipers 2, an air chamber 4, an eccentric rotating arm 5, two eccentric rotating arm mounting seats 6 and a fixing plate 7, wherein the brake disc 1 is arranged on an axle housing, the fixing plate 7 is an integrally formed rectangular plate, the center of the rectangular plate is provided with a mounting hole 7-1 for being mounted on the axle housing, the rectangular plate is provided with an upper bracket mounting hole 7-2 and a lower bracket mounting hole 7-2 which are symmetrically arranged, each bracket mounting hole comprises three bracket mounting holes 7-2 which are arranged in a triangular shape and are arranged left and right, the periphery of the rectangular plate is also provided with a lightening hole 7-3, and the fixing plate 7 is sleeved on the axle housing through the mounting hole and is fixedly mounted on the axle housing by welding. The brackets 2-1 of the two brake calipers 2 are symmetrically installed on the fixed plate 7 through the matching of three bolts and the bracket installation holes 7-2, the two brake calipers 2-2 are respectively arranged on the upper side and the lower side of the brake disc 1, the two brake calipers 2-2 are respectively installed on the brackets 2-1 of the two brake calipers 2 in a sliding mode through guide shafts, the two brake calipers 2-2 are axially matched in a sliding mode along the front and back directions of the guide shafts, the two brake calipers 2-2 are respectively provided with the pressing plates 2-3, the first friction plate 3 and the second friction plate are installed on the bracket 2-1 in a combined mode and are pressed through the pressing plates 2-3 installed on the movable calipers to prevent falling, and the two brake calipers 2 are respectively sleeved on the upper side and the lower side of the brake disc 1, so that the friction area between the two brake calipers 1 is increased, the friction coefficient of the friction plates is effectively prevented from being reduced, and the braking moment is improved, and meanwhile, the single side of the brake calipers 2 are symmetrically divided into double side by disc type to be stressed more evenly and more stably. The two eccentric rotating arm mounting seats 6 are respectively fixed on the outer side end surfaces of the upper moving clamp 2-2 and the lower moving clamp 2-2 through bolts, the air chamber 4 is provided with an air chamber mounting seat which is of a U-shaped structure, and the air chamber 4 is mounted on the two moving clamps 2-2 through the air chamber mounting seat 13, so that the occupied space of the air chamber 4 on a chassis is reduced. The eccentric rotary arm 5 is lengthened, so that the eccentric rotary arm is more labor-saving after being lengthened, and a larger braking moment can be obtained under the condition that the same force is input. The eccentric rotating arm 5 is Y-shaped, the eccentric rotating arm 5 comprises a main part and two branch parts, and the width of the main part is wider than that of the branch parts, so that the strength of the eccentric rotating arm 5 is ensured. The push rod of the air chamber 4 is connected with the trunk end of the eccentric rotary arm 5, two branch ends of the eccentric rotary arm 5 are hinged to the eccentric rotary arm mounting seat 6 through rotary pins 5-2 respectively, the two branch ends of the eccentric rotary arm are provided with major arc grooves respectively, the major arc grooves are eccentrically arranged on the eccentric rotary arm, the two branch ends of the eccentric rotary arm 5 are provided with rollers 5-1 which are movably arranged to protrude respectively, the rollers 5-1 are arranged in the major arc grooves, the eccentric rotary arm 5 rotates to drive the rollers 5-1 to move, and the eccentric arrangement increases the pressure of the rollers 5-1. The eccentric rotating arm is respectively in movable contact with piston body components of the two brake calipers 2 through rollers 5-1, return springs 12 are arranged between the first friction plates 3 of the two brake calipers 2 and the movable calipers 2-2, and the return springs 12 are utilized to drive the first friction plates 3 to return and separate from the brake disc 1. In this embodiment: the first friction plate 3 of each brake caliper 2 is provided with two return springs 12, one side of each return spring 12 is hung on the back surface of the first friction plate 3, the front surface of the first friction surface is in contact with the brake disc 1 for friction braking, and the other end of each return spring 12 is hung on the movable caliper 2-2.
The piston body assembly of two brake calipers 2 all includes piston body 8 and piston body mount pad 9, piston body sliding fit is in the piston body mount pad 9, piston body 8 includes screw rod 8-1, spiral cover 8-2, flat end cover 8-3, anti-rotation key 8-4, rand 8-5, torsional spring 8-6, spiral ring 8-7, spring 8-8, anti-rotation card 8-9 and spring spacing seat 8-10, spiral cover 8-2 sliding fit is in the piston body mount pad 9, one side of spiral cover 8-2 be equipped with be used for with flat end cover 8-3 matched with ladder hole, be equipped with rand groove and torsional spring mounting groove on the ladder hole, the opposite side be equipped with the tooth that meshes of spiral ring 8-7. The side face of the flat end cover 8-3 is provided with a key slot, and the inner side of the flat end cover 8-3 is provided with a torsion spring mounting groove and a clamping ring groove. The spiral rotating ring 8-7 is provided with meshing teeth.
One end of the spiral rotating sleeve 8-2 is arranged in a collar groove through a collar 8-5 and is connected with the flat end cover 8-3, the flat end cover 8-3 is in contact with the roller 5-1 of the eccentric rotating arm, the torsion spring 8-6 is arranged in a torsion spring mounting groove between the spiral rotating sleeve 8-2 and the flat end cover 8-3, an anti-rotating key 8-4 is arranged on the flat end cover 8-3, the anti-rotating key 8-4 is arranged in the key groove, the anti-rotating key 8-4 is fixedly arranged on the piston body mounting seat 9, and the torsion spring 8-6 enables the spiral rotating sleeve 8-2 to rotate unidirectionally. The other end of the spiral rotating sleeve 8-2 is sleeved with the spiral rotating ring 8-7 and the spring 8-8, the spring 8-8 and the spiral rotating ring 8-7 are installed on the piston body installation seat 9 through the spring limiting seat 8-10, one end of the spring 8-8 abuts against the spring limiting seat 8-10, the other end of the spring abuts against the spiral rotating ring 8-7, the spiral rotating ring 8-7 is meshed with the spiral rotating sleeve 8-2 intermittently, and after the spiral rotating sleeve 8-2 moves axially to be contacted with the spiral rotating ring 8-7, the spiral rotating sleeve 8-2 is meshed with the spiral rotating ring 8-7 to drive the spiral rotating ring 8-7 to rotate, so that the spiral rotating sleeve 8-2 rotates unidirectionally to enable the screw to extend to compensate abrasion gaps of friction plates. The screw rod 8-1 is in threaded fit in the spiral rotating sleeve 8-2, one end of the screw rod 8-1 is inserted into the torsion spring 8-6, the other end of the screw rod extends out of the spiral rotating sleeve 8-2 and is in contact with the first friction plate 3 of the brake caliper 2, an anti-rotating clamp 8-9 is arranged at the extending end of the screw rod 8-1, and the screw rod 8-1 is utilized to axially move to drive the first friction plate 3 to move towards the brake disc 1. In this embodiment: the extending end of the screw rod 8-1 is provided with a circle of clamping grooves which are uniformly distributed and protrude outwards, the anti-rotation clamp 8-9 is provided with two bosses, and the two bosses are clamped in the clamping grooves of the screw rod 8-1. When the screw rod 8-1 is installed, the initial installation position of the screw rod 8-1 is adjusted by adjusting the matching position of the clamping groove and the boss.
The piston body mounting seat 9 is fixed on the movable clamp 2-2 of the brake clamp 2, and is corresponding to the eccentric rotating arm mounting seat 6, and the piston body mounting seat 9 and the eccentric rotating arm mounting seat 6 are fixedly connected to form a closed body. One end of the piston body is contacted with the roller 5-1 of the eccentric rotating arm, the other end of the piston body is propped against the first friction plate 3 of the brake caliper 2, and the piston body assembly can automatically adjust the gap between the brake disc 1 and the friction plate.
Possibly, a dust cover 8-11 is further arranged, the dust cover is arranged outside the spring limiting seat, and the dust cover and the spring limiting seat are fixedly arranged on the piston body mounting seat 9.
The working principle of the invention is as follows:
an air chamber 4 drives an eccentric rotating arm with a Y-shaped structure to move, the eccentric rotating arm is utilized to simultaneously drive piston bodies of two brake calipers 2 to move, the piston body of each brake calipers 2 simultaneously pushes a first friction plate 3 to press a brake disc 1, and simultaneously, the generated reaction force drives a movable calipers 2-2 to move so as to push a second friction plate 14 to press the brake disc 1, and the automobile is braked by friction force. When the air chamber 4 is depressurized, the first friction plate 3 releases the brake under the action of the return spring 12, the structure ensures that the two brake calipers 2 brake simultaneously, improves the braking effect, shortens the braking distance by about 30 percent compared with the traditional braking distance, and effectively avoids the problem of steering failure.
The piston body assembly adopts the eccentric rotating arm to rotate to drive the roller 5-1 to extrude the flat head end cover 8-3, the flat head end cover 8-3 moves to drive the spiral rotating sleeve 8-2 to rotate unidirectionally, the spiral rotating sleeve 8-2 rotates to drive the screw rod to axially move, the flat head end cover 8-3 is provided with the key groove to be installed with the anti-rotating key 8-4, the flat head end cover 8-3 can be prevented from rotating, the spiral rotating sleeve 8-2 is ensured to rotate unidirectionally by utilizing the spiral rotating ring 8-7, the screw rod is prevented from rotating by the anti-rotating clamp 8-9, and the first friction plate 3 is pushed by the screw rod 8-1 to contact and brake with the brake disc 1. When stopping the braking, the air chamber is decompressed, and the piston body returns under the action of the spring external force after the eccentric rotating arm returns. The piston body has the function of automatically adjusting the gap between the brake disc 1 and the friction plate, the flat end cover is a plane, no lateral stress exists during movement, the movement is flexible, the response time is quick, and the braking process is safe and reliable. The two brake calipers 2 symmetrically apply friction braking force to the brake disc 1 at the same time, so that the automobile brakes more stably.
Specific example 2:
referring to fig. 6 and 7, an axle assembly with a double clamp brake includes an axle housing 11, a brake provided on the axle housing 11, and a hub 10, the brake employing the double clamp pneumatic disc brake described in embodiment 1, and therefore this embodiment is omitted herein. The axle is suitable for an axle assembly of an automobile.
Specific example 3:
the engineering mechanical axle with the double-clamp brake comprises an axle housing and a brake arranged on the axle housing, wherein the brake adopts the double-clamp pneumatic disc brake in the embodiment 1, so that the embodiment is omitted.

Claims (10)

1. The utility model provides a pneumatic disc brake of double cassette pincers, includes the brake disc, sets up the brake caliper in the brake disc side, be equipped with first friction disc and second friction disc in the brake caliper, its characterized in that: the two ends of the eccentric rotating arm are hinged to the eccentric rotating arm mounting seat through rotating pins respectively, protruding rollers are movably arranged at the two branch ends of the eccentric rotating arm respectively, the eccentric rotating arm is movably contacted with a piston body component of the double-brake caliper respectively through the rollers, the piston body is slidably matched in the piston body mounting seat, the piston body mounting seat is fixed on a moving caliper of the brake caliper, the piston body is corresponding to the eccentric rotating arm mounting seat, one end of the piston body is contacted with the eccentric rotating arm in a Y shape, the other end of the piston body is propped against a first friction plate of the double-brake caliper, and the two friction plates are respectively provided with a return spring and a return spring.
2. A dual caliper pneumatic disc brake as defined in claim 1, wherein: the air chamber is arranged on the movable clamp through an air chamber mounting seat.
3. A dual caliper pneumatic disc brake as defined in claim 1, wherein: the piston body comprises a screw rod, a spiral rotating sleeve, a flat end cover, an anti-rotating key, a clamping ring, a torsion spring, a spiral rotating ring, a spring, an anti-rotating clamp and a spring limiting seat, wherein the spiral rotating sleeve is in sliding fit with the piston body mounting seat, one end of the spiral rotating sleeve is connected with the flat end cover through the clamping ring, the flat end cover is in contact with a roller of the eccentric rotating arm, the torsion spring is arranged in a torsion spring mounting groove between the spiral rotating sleeve and the flat end cover, the anti-rotating key is arranged on the flat end cover, the other end of the spiral rotating sleeve is sleeved with the spiral rotating ring and the spring, the spring and the spiral rotating ring are mounted on the piston body mounting seat through the spring limiting seat, the spiral rotating ring is in intermittent meshing with the spiral rotating sleeve, the screw is in threaded fit with the spiral rotating sleeve, the screw rod extends out of the spiral rotating sleeve and is in contact with a first friction plate of the double brake pliers, and the anti-rotating clamp is arranged at the extending end of the screw rod.
4. A dual caliper pneumatic disc brake as claimed in claim 3, wherein: the anti-dust device is characterized by further comprising a dust cover, wherein the dust cover is arranged outside the spring limiting seat, and the dust cover and the spring limiting seat are fixedly installed on the piston body installation seat.
5. A dual caliper pneumatic disc brake as claimed in claim 3, wherein: the side of the flat end cover is provided with a key groove, the anti-rotation key is arranged in the key groove and fixedly installed on the piston body installation seat, and the inner side of the flat end cover is provided with a torsion spring installation groove and a clamping ring groove.
6. A dual caliper pneumatic disc brake as claimed in claim 3, wherein: one side of the spiral rotating sleeve is provided with a stepped inner hole matched with the butt end cover, the stepped inner hole is provided with a clamping ring groove and a torsion spring mounting groove, and the other side of the spiral rotating sleeve is provided with a meshing tooth meshed with the spiral rotating ring.
7. A dual caliper pneumatic disc brake as defined in claim 1, wherein: the two branch ends of the eccentric rotating arm are respectively provided with a major arc groove, the major arc grooves are eccentrically arranged on the eccentric rotating arm, and the rollers are arranged in the major arc grooves.
8. A dual caliper pneumatic disc brake as defined in claim 1, wherein: the fixed plate adopts integrated into one piece's rectangular plate, the mounting hole that is used for installing on the axle housing is offered at rectangular plate center, the rectangular plate is equipped with two sets of support mounting holes that set up symmetrically from top to bottom.
9. The utility model provides a take axle assembly of double clamp brake, includes the axle housing, sets up stopper, wheel hub on the axle housing, its characterized in that: the brake employs the dual caliper pneumatic disc brake of any one of claims 1 to 8.
10. The utility model provides a take engineering machine tool axle of double clamp brake, includes the axle housing, sets up the stopper on the axle housing, its characterized in that: the brake employs the dual caliper pneumatic disc brake of any one of claims 1-8.
CN202311478735.0A 2023-11-08 2023-11-08 Double-caliper pneumatic disc brake and axle assembly engineering mechanical axle Pending CN117345789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311478735.0A CN117345789A (en) 2023-11-08 2023-11-08 Double-caliper pneumatic disc brake and axle assembly engineering mechanical axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311478735.0A CN117345789A (en) 2023-11-08 2023-11-08 Double-caliper pneumatic disc brake and axle assembly engineering mechanical axle

Publications (1)

Publication Number Publication Date
CN117345789A true CN117345789A (en) 2024-01-05

Family

ID=89359540

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311478735.0A Pending CN117345789A (en) 2023-11-08 2023-11-08 Double-caliper pneumatic disc brake and axle assembly engineering mechanical axle

Country Status (1)

Country Link
CN (1) CN117345789A (en)

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