CN110821981A - Full-disc brake for heavy vehicle - Google Patents
Full-disc brake for heavy vehicle Download PDFInfo
- Publication number
- CN110821981A CN110821981A CN201911190917.1A CN201911190917A CN110821981A CN 110821981 A CN110821981 A CN 110821981A CN 201911190917 A CN201911190917 A CN 201911190917A CN 110821981 A CN110821981 A CN 110821981A
- Authority
- CN
- China
- Prior art keywords
- brake
- disc
- brake disc
- power input
- input shaft
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 230000000630 rising effect Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
-
- 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
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/60—Clutching elements
- F16D13/64—Clutch-plates; Clutch-lamellae
-
- 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
- F16D65/78—Features relating to cooling
- F16D65/84—Features relating to cooling for disc brakes
- F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides an all-disc brake for a heavy vehicle, which comprises a base, a brake disc and an actuating device for pressing friction plates towards the brake disc, wherein the base comprises a base cover body, a power input shaft in the actuating device is arranged on the base cover body, the power input shaft extends from the outside of the base cover body to the inside of the base cover body towards the brake disc, the power input shaft is driven by an external rotating mechanism, and a first transmission part is arranged at one end towards the brake disc. An intermediate driving piece is arranged inside the base cover and provided with a second transmission part, and the intermediate driving piece is provided with a driving part facing the brake disc and gradually rising towards the brake disc; be provided with distance frame and a plurality of ejector pin between middle driving piece and the brake disc, the one end of each ejector pin supports and leans on the drive division of middle driving piece, and the other end butt of each ejector pin or fixed to distance frame, ejector pin and middle driving piece are configured into when middle driving piece rotates, and the ejector pin moves towards the brake disc under the promotion of drive division.
Description
Technical Field
The invention relates to the field of automobile braking, in particular to an all-disc brake for a heavy vehicle.
Background
A brake is a device having a function of decelerating, stopping, or holding a stopped state of a moving member or a moving machine. Prior art automotive brakes typically include a drum brake system and a disc brake. The drum brake is a traditional brake system, and the drum brake is composed of a hydraulic mechanism or a pneumatic mechanism, brake shoes, brake pads and a drum chamber, wherein the hydraulic mechanism or the pneumatic mechanism applies acting force to the two half-moon-shaped brake pads to press the inner wall of the drum chamber during braking, and the brake drum is prevented from rotating by friction force, so that the brake effect is achieved. The disc brake also uses air pressure or hydraulic pressure as a power source, and main parts include a brake disc, an air chamber mechanism or a hydraulic mechanism, a brake caliper, a friction plate and the like. The rotating element in a disc brake is a metal disc, called a brake disc, which works with end faces. The brake disc is made of cast iron or alloy steel and is fixed to the wheel, and the friction elements clamp the brake disc from both sides to brake as the wheel rotates. Disc brakes can be broadly divided into caliper disc and full disc types.
At the present stage, most of brake systems of heavy trucks mainly use drum brakes, and in recent years, caliper disc brake systems (disc brakes) are gradually applied to the field of heavy trucks due to good heat dissipation and stability, but the application of the traditional caliper disc brake systems to heavy trucks has inherent limitations such as limited braking torque potential and strict working condition requirement, so that the application of the existing caliper disc brakes to heavy trucks is not very wide, and thus a disc brake with large braking force, good stability and the like is urgently needed.
Disclosure of Invention
In view of the above, embodiments of the present invention provide an all-disc brake for a heavy vehicle that obviates or mitigates one or more of the disadvantages of the related art.
The technical scheme of the invention is as follows:
the brake comprises a base, a brake disc and an actuating device for pressing friction plates towards the brake disc, wherein the base comprises a base cover body, a power input shaft in the actuating device is arranged on the base cover body, the power input shaft is arranged to be away from the axis of the brake disc by a preset distance and extends from the outside of the base cover body to the inside of the base cover body towards the brake disc, a first transmission part is arranged at one end of the power input shaft towards the brake disc, and the power input shaft receives and transmits braking torque through self rotation; an intermediate driving piece is arranged inside the base cover, the intermediate driving piece is provided with a second transmission part matched with the first transmission part of the power input shaft, so that the intermediate driving piece can rotate around the axis line of the intermediate driving piece under the driving of the power input shaft, and the intermediate driving piece is provided with a driving part facing the brake disc and gradually rising towards the brake disc; a plurality of ejector rods corresponding to the thrust frame and the number of the driving parts of the intermediate driving piece are arranged between the intermediate driving piece and the brake disc, wherein one end of each ejector rod can abut against the driving part of the intermediate driving piece in a relatively movable manner, the other end of each ejector rod abuts against or is fixed to the thrust frame, and the ejector rods and the intermediate driving piece are configured to move towards the brake disc under the pushing of the driving parts when the intermediate driving piece rotates.
In some embodiments, the thrust frame is provided with a first set of friction plates uniformly arranged at three or more points along the circumference on the surface facing the brake disc.
In some embodiments, a brake disc cover is further arranged on the inner side of the tail end of the full disc brake; and a second group of friction plates which can be pressed against the brake disc and are circumferentially distributed on the other side of the brake disc opposite to the thrust frame are arranged in the brake disc cover.
In some embodiments, the drive portion is a spiral ramp or a spiral guide.
In some embodiments, the first transmission portion of the power input shaft and the second transmission portion of the intermediate drive are of a cooperating gear transmission configuration.
In some embodiments, the first transmission part of the power input shaft is a shaft-like gear extending into the base housing, and the second transmission part of the intermediate drive is an internal gear structure covering at least a part of a circumferential surface thereof and meshing with the shaft-like gear.
In some embodiments, a flat bearing is disposed between the bottom end of the base housing and the end face of the intermediate drive member.
In some embodiments, the full disc brake further includes a base cover flange fixedly installed between the base cover body and the brake disc cover, the base cover flange is provided with a limiting hole and a vent hole through which the ejector rod passes, and the base cover flange is connected with the axle to transmit the braking reaction torque to the axle.
In some embodiments, the outer circumferential surface of the thrust frame is provided with rollers; and a plurality of guide grooves parallel to the axial lead direction are reserved on the shell of the brake disc cover and are used for allowing the rollers of the thrust frame to slide.
In some embodiments, the intermediate driving member has three or more uniformly distributed spiral slopes on its outer circumferential surface.
The full-disc brake can directly adopt an air chamber push rod brake driving mechanism of the existing vehicle drum brake, is easy to arrange, simple and convenient to maintain and replace, stable in braking, good in effect and capable of realizing large-multiple force increasing.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the specific details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the detailed description that follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. For purposes of illustrating and describing some portions of the present invention, corresponding parts of the drawings may be exaggerated, i.e., may be larger, relative to other components in an exemplary apparatus actually manufactured according to the present invention. In the drawings:
FIG. 1 is an exploded view of the components of an all-disc brake according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an all-disc brake and its driving structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of an assembly structure of the full disc brake according to an embodiment of the present invention;
FIG. 4 is a schematic view of an actuator and a brake disc of an all-disc brake according to an embodiment of the present invention;
FIG. 5 is a schematic view of the assembly of the brake disc and the hub of the full disc brake according to one embodiment of the present invention;
FIG. 6 is a schematic perspective view of a base housing according to an embodiment of the invention;
FIG. 7 is a schematic perspective view of an intermediate driving member according to an embodiment of the present invention;
FIG. 8 is a schematic perspective view of a lift pin according to an embodiment of the present invention;
FIG. 9 is a schematic perspective view of a base cover flange according to an embodiment of the present invention;
FIG. 10 is a schematic perspective view of a thrust frame according to an embodiment of the present invention;
fig. 11 is a schematic perspective view of a brake disc cover according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted. It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
It is also noted herein that the term "coupled," if not specifically stated, may refer herein to not only a direct connection, but also an indirect connection in which an intermediate is present. Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.
The invention aims to provide an all-disc brake for a heavy vehicle, which aims to solve the technical problem that the braking force of a traditional caliper braking system is limited.
As shown in fig. 1 and 3, in some implementations, the brake includes a base, a brake disc 800, and an actuator for pressing a friction pad against the brake disc 800. The actuator transmits the input braking force to push the friction plate to press against one end of the brake disc 800 through the transmission structure, and also can push the brake disc 800 to slide in a small displacement manner in the axial direction of the outer hub, and the friction plate presses against the friction plates on two sides of the brake disc 800, so as to generate braking torque.
In some implementations, the base may include a base housing 100, and the actuator may include a power input shaft 300, an intermediate drive 400, a ram 500, a thrust frame 700, and the like. Wherein the power input shaft 300, the intermediate driving member 400 and the lift pin 500 may be installed in the base housing 100.
In some implementations, the power input shaft 300 in the actuator is mounted on the base housing 300, the power input shaft 300 is arranged to extend into the base housing 300 from outside the base housing 300 toward the brake disc 800, the power input shaft 300 is provided with a first transmission portion at an end toward the brake disc 800, and the power input shaft 300 receives and transmits a braking torque by its rotation. Further, the power input shaft 300 may also be disposed at a predetermined distance from the axis of the brake disc 800, i.e., the power input shaft 300 and the brake disc 800 or the intermediate driving member 400 may be mounted separately, but is not limited thereto, and the power input shaft 300 and the intermediate driving member 400 may also be mounted coaxially.
In some implementations, as shown in fig. 1 and 7, the base cover 100 is arranged with an intermediate driving part 400, the intermediate driving part 400 is provided with a second transmission part 410 matched with the first transmission part of the power input shaft 300 so that the intermediate driving part 400 can rotate around its axis line under the driving of the power input shaft 300, and the intermediate driving part 400 is provided with a driving part 420 facing the brake disc 800 and gradually rising toward the brake disc 800. It is understood that the gradual increase is a spiral approach of the end surface of the driving part 420 to the brake disc 800 according to a predetermined rotation direction.
In the above embodiment, the first transmission portion of the power input shaft 300 and the second transmission portion of the intermediate driving member 400 of the present invention are in meshing transmission with each other. The gear meshing transmission can be in the form of cylindrical gears, conical gears and the like, and the tooth-shaped structure can be a straight tooth structure or a helical tooth structure.
In some implementations, a thrust bracket 700 and a plurality of lift pins 500 are disposed between the intermediate driving member 400 and the brake disc 800, wherein one end of each lift pin 500 is relatively movably abutted against the driving portion 420 of the intermediate driving member 400, the other end of each lift pin 500 is abutted against or fixed to the thrust bracket 700, and the lift pins 500 and the intermediate driving member 400 are configured such that when the intermediate driving member 400 rotates, the lift pins 500 move toward the brake disc 800 under the urging of the driving portion 420. It can be understood that the power input shaft 300 of the present invention drives the intermediate driving member 400 to perform a rotational motion, and the intermediate driving member 400 drives the carrier rod 500 to perform a linear motion. The one end of the push rod 500 relatively movably abutting against the driving part 420 of the intermediate driver 400 means that the end of the push rod 500 can slide or roll on the driving part 420. Under the guiding action of the limiting hole 610 of the base cover flange 600, the push rod 500 pushes the thrust frame 700 to move along the axial direction of the brake disc 800, so as to generate a braking torque by being pressed with the friction pad.
In some embodiments, as shown in fig. 1, the thrust frame 700 is provided with a first set of friction pads 910 uniformly at three or more points along the circumference on the side facing the brake disc 800. In some embodiments, as shown in fig. 1, the full disc brake is further provided with a brake disc cover 200, and a second set of friction plates 920 is provided inside the end of the brake disc cover 200 that can be pressed against the brake disc 800 on the side opposite to the thrust frame 700. The first friction plate 910 is arranged on the thrust frame and can move along with the thrust frame, and is called a dynamic friction plate, the second friction plate 920 is arranged in the fixed brake disc cover and is called a static friction plate, the friction plates on the two sides clamp and mutually press the brake disc, and the braking torque is large and stable. In specific implementation, each of the first set of friction plates 910 and the second set of friction plates 920 may include three friction plates uniformly distributed on the circumference, but the number of the friction plates is not limited to this, and a plurality of pairs of friction plates form a multi-point circumferential clamping structure. The full-disc brake can realize braking efficiency and reduce the loss of friction plates by virtue of a multi-point circumferential clamping structure which is uniformly distributed.
The full-disc brake can be driven by an air chamber push rod and an automatic adjusting mechanism or electric equipment of the existing drum brake. For example, as shown in fig. 2, taking the air chamber push rod in the prior art as an example, the push rod 11 of the air chamber 10 is connected to the power input shaft 300 of the present invention through the connecting rod 12, wherein the push rod 11 and the connecting rod 12 can form a crank-rocker mechanism, and the air chamber push rod 11 is used as a rocker, and the reciprocating swing thereof is converted into the rotation of the crank. The power input shaft 300 and the connecting rod 12 can be connected through a transmission shaft, and the connection mode can be a coupling or a spline connection. The boosting execution device is additionally arranged between the braking force source and the brake disc of the full-disc brake, so that the braking force can be increased, and the braking effect is enhanced.
In some embodiments, as shown in fig. 1, the first transmission part of the power input shaft 300 is a shaft-like gear extending into the base housing 100, and the second transmission part 410 of the intermediate transmission part 400 is an internal gear structure covering at least a part of the circumference thereof and meshing with the shaft-like gear. In other words, the power input shaft 300 is a gear shaft, the intermediate driving member 400 is a ring gear with partial internal teeth, the gear shaft and the ring gear are internally meshed, the tooth form is preferably helical teeth, the helical teeth have larger bearing capacity than straight teeth, the transmission is more stable, the meshing performance is good, the structure is compact, and the high-speed heavy-load driving device is suitable for high-speed heavy-load conditions.
In some embodiments, the drive portion 420 of the intermediate drive 400 may be a helical ramp or a helical guide. As shown in fig. 7, the inner peripheral surface of the intermediate driving member 400 is partially provided with a tooth structure, and the driving portion 420 is a spiral slope structure on the outer peripheral surface thereof. The spiral slope surface structure can be integrally formed on the peripheral surface of the gear ring wheel, and the end surface of the spiral slope surface structure can be along the radial direction of the gear ring wheel. A plurality of reinforcing rib structures can be arranged between the spiral slope surface and the end surface of the gear ring wheel so as to adapt to the transmitted braking force. The inclination of the spiral slope surface can determine the amplification multiplying speed, and the flatter (smaller) the inclination is, the larger the amplification multiplying speed is. The number of spiral ramps may also be varied according to the actual requirements. In an embodiment, the outer circumferential surface of the intermediate driving member 400 may be provided with three uniformly distributed spiral slopes, but the number is not limited thereto. The full-disc brake can realize stable and large-multiple-force-increasing braking, and is particularly suitable for heavy trucks.
The full-disc brake applies the ramp force-increasing principle, the peripheral surface of the middle driving piece is provided with the spiral slope surface, the rotary motion of the spiral slope surface is converted into the linear motion, and the braking force exerted on the brake disc can realize the technical effect of increasing force by a large factor through the executing device.
In some embodiments, as shown in FIG. 6, the base housing 100 may include an inner annular wall 120, an outer annular wall 110, and a bottom end 130 connecting the inner and outer annular walls 120, 110. Wherein the intermediate driver 400 is installed between the inner annular wall 120 and the outer annular wall 110. The bottom end 130 of the base housing is provided with a mounting hole 140 for the power input shaft 300 to extend into, and the local inner annular wall 120 is recessed toward the center to form a fixed shaft seat 150 for mounting the power input shaft 300 and the bearing assembly. In some embodiments, a flat bearing 401 (thrust bearing) is disposed between the bottom end 130 of the base housing 100 and the end surface of the intermediate drive 400, primarily to carry axial loads, to reduce part edge stresses and improve service life.
In some embodiments, as shown in fig. 8, the end of the top rod 500 abutting against the spiral slope structure is provided with a rolling element, such as a roller or a cylindrical roller, to reduce friction force, so that the transmission is more stable. The rod body of the jack 500 is a square shaft or has a plane surface that prevents rotation, so that the jack 500 is restricted to move only in a straight line.
In some embodiments, as shown in fig. 1 and 9, the full-disc brake of the present invention further includes a base cover flange 600 fixedly installed between the base cover 100 and the brake disc cover 200, and the base cover flange 600 is provided with a limiting hole 610 for the carrier rod 500 to pass through. The shape of the limiting hole 610 is consistent with the cross-sectional shape of the rod body of the carrier rod 500, the base cover flange 600 of the present invention can further encapsulate the intermediate driving member 400, the power input shaft 300 and the bearing assembly thereof in the base cover body 100, the base cover flange 600 is also used for the carrier rod 500 to pass through and limit the linear motion of the carrier rod, and the base cover flange 600 can also be used for being directly connected with the axle flange to fix the whole all-disc brake on the axle.
The thrust frame 700 of the present invention is used to receive the braking force of the lift rod 500 and to uniformly push the first friction plate 910 and the brake disc 800 to move. In some embodiments, as shown in fig. 1 and 10, a boss 711 for inserting the other end of the top rod 500 is provided on the thrust frame 700, the boss 711 is provided with a blind hole having the same shape as the rod body of the top rod 500, and a reinforcing rib 712 is provided at the periphery of the boss 711. In a specific implementation, the thrust frame 700 may include a first plate portion 710 contacting the dynamic friction plate 910 and a first annular frame portion 720 connecting adjacent plate portions, one end of the plate portion 710 facing the brake disk 800 is used for mounting the dynamic friction plate 910, and the outer circumferential surface of the plate portion 710 of the thrust frame is provided with a roller 730.
The brake disc cover 200 of the present invention is mainly used as an outer cover of a full disc brake. In some embodiments, as shown in fig. 1 and 11, brake disc cover 200 may include an annular end for mounting static friction plate 920 and cover 230 for covering a thrust frame and a brake disc. In order to reduce weight, the end portion of the brake disc cover 200 may also include a second plate-shaped portion 210 and a second annular frame portion 220 connecting adjacent plate-shaped portions, and the static friction plate 920 is fixedly mounted on an end surface of the second plate-shaped portion 210. The housing 230 has a plurality of guide grooves 231 formed along an axial direction thereof for the rollers 730 of the thrust frame 700 to roll.
In some embodiments, the outer circumferential surfaces of the base cover body 100, the base cover flange 600 and the brake disc cover 200 of the present invention are provided with a plurality of sets of connecting holes corresponding to each other, and the base cover body 100, the base cover flange 600 and the brake disc cover 200 may be fixedly connected by bolts or studs.
In some embodiments, as shown in fig. 5, the brake rotor 800 is a full-disc, floating brake rotor that is coupled to the hub 20 via a brake rotor sliding bracket 810. Floating brake disc and brake disc carriage 810 coaxial arrangement pass through bolted connection, are equipped with the spliced pole on the brake disc carriage 810, are equipped with the connecting hole on the wheel hub 20, brake disc carriage 810 realizes brake disc and wheel hub's fixed connection and synchronous rotation through pegging graft in the connecting hole.
In the above embodiment, the full-disc brake disc 800 is provided with heat dissipation holes, which has the advantages of fast heat dissipation, light weight, simple structure and convenient adjustment. High-temperature resistance under high load, stable braking effect, and resistance to mud and water invasion, and is suitable for driving in winter and in bad road conditions. The disc brake applies force along the brake disc, the brake shaft is not affected by bending moment, and the radial size is small. Be equipped with ventilation hole 620 on base apron flange 600, strengthen the inside and outside air flow of stopper, improve the thermal diffusivity, alleviate stopper self weight simultaneously.
Compared with a drum brake, the working surface of the full-disc brake is a plane, the two surfaces of the full-disc brake transfer heat, a disc is easy to cool when rotating, large deformation is not easy to occur, the braking efficiency is stable, and the braking effect of a brake disc is enhanced due to high-temperature expansion after long-time use; the drum brake conducts heat on a single surface, the temperature difference between the inner surface and the outer surface is large, so that the brake drum is easy to deform, and after long-time braking, the brake drum expands due to high temperature, so that the braking efficiency is weakened. In addition, the full-disc brake has simple structure and convenient maintenance, and is easy to realize the automatic adjustment of the brake clearance.
The braking process and the transmission of the braking force reaction torque of the full-disc brake according to the invention are described in detail below with reference to a specific embodiment.
The full-disc brake of the invention applies the ramp boosting principle, and can utilize the air chamber push rod or other brake driving mechanisms of the existing drum brake to drive the power input shaft 300 of the invention, the power input shaft 300 drives the middle driving piece 400 and the spiral slope surface thereof to rotate, thereby pushing the ejector rod 500 to ascend along the spiral slope surface, because the ejector rod 500 can only do linear motion in the limiting hole of the base cover plate flange 600, the ejector rod 500 pushes the thrust frame 700 and the dynamic friction plate 910 arranged thereon to move towards the brake disc 800 along the axle direction. The brake disc 800 may be a floating disc structure, i.e. the brake disc 800 may slide axially on the hub. When the dynamic friction plate 910 pushes the brake disc 800 to move toward the outer hub, the static friction plate 920 fixed to the brake disc cover 200 is pressed, and braking force is generated among the dynamic friction plate 910, the static friction plate 920 and the brake disc 800, thereby generating braking torque.
In the present invention, the braking reaction torque of the brake disc 800 is transmitted to the axle support flange by the following arrangement: most of the braking reaction torque on the dynamic friction plates 910 may be transmitted to the brake disc housing 200 through the guide pulleys 730 on the thrust frame 700 and the guide grooves 231 on the brake disc housing 200, and transmitted from the brake disc housing 200 to the base cover flange 600 of the brake together with the braking reaction torque generated on the static friction plates 920. In addition, the braking torque of part of the dynamic friction plate 910 is directly transmitted to the base cover flange 600 through the push rod 500, and the base cover flange 600 only bears the braking reverse shearing force. The base cover flange 600 is connected to the axle flange and the base cover flange 600 will brake the reaction torque transfer axle.
According to the all-disc brake of the present invention, the advantages obtainable include at least:
1) the full-disc brake of the invention applies the ramp force-increasing principle, the peripheral surface of the middle driving piece is provided with a spiral slope surface, the rotary motion of the spiral slope surface is converted into linear motion, and the braking force applied on the brake disc can realize large-time force-increasing by the executing device and combining the lever amplifying mechanism of the original air chamber connecting rod.
2) The full-disc brake can directly adopt the air chamber push rod or the brake driving mechanism of the existing vehicle drum brake, is easy to arrange, is simple and convenient to maintain and replace, and has good braking effect.
3) The full-disc brake adopts a more reasonable force transmission design, the base cover body only bears axial tension, the base cover plate flange only bears braking reverse shearing force and the braking reverse shearing force is directly transmitted to the axle flange by the base cover plate flange, and all parts of the brake are stressed more clearly and less.
4) The full-disc brake has good heat dissipation effect, force transmission is uniformly distributed at multiple points along the circumference, the stress of components is uniform, the service life of a brake disc can be greatly prolonged, and the full-disc brake is particularly suitable for heavy trucks.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments in the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An all-disc brake for a heavy vehicle, the brake comprising a base, a brake disc and an actuator for pressing a friction pad against the brake disc, characterized in that,
the base includes a base cover body on which a power input shaft in the actuator is mounted, the power input shaft being arranged at a predetermined distance from an axis line of the brake disc and extending from outside the base cover body toward the brake disc into the base cover body, the power input shaft being provided with a first transmission portion at an end toward the brake disc, the power input shaft receiving and transmitting a braking input torque by rotation of itself;
an intermediate driving piece is arranged in the base cover body, the intermediate driving piece is provided with a second transmission part matched with the first transmission part of the power input shaft, so that the intermediate driving piece can rotate around the axis line of the intermediate driving piece under the driving of the power input shaft, and the intermediate driving piece is provided with a driving part facing the brake disc and gradually rising towards the brake disc;
a thrust frame and a plurality of ejector rods are arranged between the intermediate driving piece and the brake disc, wherein one end of each ejector rod can abut against the driving part of the intermediate driving piece in a relatively movable manner, the other end of each ejector rod abuts against or is fixed to the thrust frame, and the ejector rods and the intermediate driving piece are configured to move towards the brake disc under the pushing of the driving part when the intermediate driving piece rotates.
2. An all-disc brake according to claim 1, in which the carrier has a first set of friction pads disposed uniformly at three or more circumferential points on the face facing the disc.
3. An all-disc brake according to claim 2, characterised in that it is further provided with a brake disc cover; and a second group of friction plates which can be pressed against the brake disc and are circumferentially distributed on the other side opposite to the thrust frame are arranged on the inner side of the tail end of the brake disc cover.
4. An all-disc brake according to claim 1, in which the drive portion is a spiral ramp or a spiral guide.
5. The all-disc brake of claim 1, wherein the first transmission portion of the power input shaft and the second transmission portion of the intermediate drive are of cooperating geared construction.
6. The all-disc brake of claim 1, wherein the first transmission portion of the power input shaft is a shaft-like gear extending into the base housing, and the second transmission portion of the intermediate drive is an internal tooth structure that covers at least a portion of its circumferential surface and meshes with the shaft-like gear.
7. The all-disc brake of claim 1, wherein a flat bearing is provided between the bottom end of the base housing and the end face of the intermediate drive member.
8. The all-disc brake of claim 3, further comprising a base cover flange fixedly mounted between the base cover body and the brake disc cover, wherein the base cover flange is provided with a limiting hole and a vent hole for the ejector rod to pass through, and the base cover flange is connected with an axle to transmit the braking reaction torque to the axle.
9. The all-disc brake of claim 1, wherein rollers are provided on the outer peripheral surface of the thrust frame;
and a plurality of guide grooves parallel to the axial lead direction are reserved on the shell of the brake disc cover and are used for allowing the rollers of the thrust frame to slide.
10. An all-disc brake according to claim 4 in which the intermediate drive member is provided with three or more equispaced spiral ramps on its outer circumferential surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911190917.1A CN110821981B (en) | 2019-11-28 | 2019-11-28 | Full-disc brake for heavy vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911190917.1A CN110821981B (en) | 2019-11-28 | 2019-11-28 | Full-disc brake for heavy vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110821981A true CN110821981A (en) | 2020-02-21 |
| CN110821981B CN110821981B (en) | 2021-10-01 |
Family
ID=69542826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911190917.1A Active CN110821981B (en) | 2019-11-28 | 2019-11-28 | Full-disc brake for heavy vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110821981B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360902A (en) * | 2020-10-29 | 2021-02-12 | 河北埃克斯福动力科技有限公司 | Full-disc brake and floating disc force transmission mechanism thereof |
| CN115247681A (en) * | 2021-07-27 | 2022-10-28 | 河北埃克斯福动力科技有限公司 | Transmission device of full-disc brake and full-disc brake |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2807175A (en) * | 1952-12-31 | 1957-09-24 | Warner & Swasey Res Corp | Rotary indexing mechanism |
| GB1087988A (en) * | 1965-03-04 | 1967-10-18 | Automotive Prod Co Ltd | Improvements in and relating to disc brakes |
| US3521411A (en) * | 1966-05-21 | 1970-07-21 | Teves Kg Alfred | Disk-brake cleaning method |
| DE10209553A1 (en) * | 2001-03-24 | 2002-09-26 | Zf Sachs Ag | Multiple-disk clutch has a pressing plate and an intermediate plate which are impinged upon by a force to be directed onto a clutch plate or a further clutch plate using a rotating coupling device |
| CN102518717A (en) * | 2011-10-27 | 2012-06-27 | 奇瑞汽车股份有限公司 | Electronic mechanical brake and vehicle |
| CN103016573A (en) * | 2012-12-20 | 2013-04-03 | 江苏大学 | Complete disc anti-blocking brake |
| CN203627611U (en) * | 2013-11-28 | 2014-06-04 | 重庆建设摩托车股份有限公司 | Piston pushing mechanism of motorcycle composite braking system |
| CN106704419A (en) * | 2017-02-15 | 2017-05-24 | 三环集团有限公司 | Braking force transmission mechanism of disc brake |
| CN106763311A (en) * | 2017-02-15 | 2017-05-31 | 三环集团有限公司 | Full-disc brake with clearance compensation function |
| CN106884911A (en) * | 2017-04-17 | 2017-06-23 | 湖南世鑫新材料有限公司 | A kind of bullet train complete disc brake with excellent heat dispersion performance |
| WO2017149829A1 (en) * | 2016-03-04 | 2017-09-08 | Ｇｋｎ ドライブライン ジャパン株式会社 | Cam mechanism and clutch device using said cam mechanism |
| CN206522382U (en) * | 2017-02-15 | 2017-09-26 | 三环集团有限公司 | A kind of complete disc brake with clearance compensation function |
| CN206522383U (en) * | 2017-02-15 | 2017-09-26 | 三环集团有限公司 | A kind of complete disc brake sealing device |
| US20170314626A1 (en) * | 2016-03-07 | 2017-11-02 | Rolls-Royce Corporation | Lift fan clutch plate to reduce instability |
-
2019
- 2019-11-28 CN CN201911190917.1A patent/CN110821981B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2807175A (en) * | 1952-12-31 | 1957-09-24 | Warner & Swasey Res Corp | Rotary indexing mechanism |
| GB1087988A (en) * | 1965-03-04 | 1967-10-18 | Automotive Prod Co Ltd | Improvements in and relating to disc brakes |
| US3521411A (en) * | 1966-05-21 | 1970-07-21 | Teves Kg Alfred | Disk-brake cleaning method |
| DE10209553A1 (en) * | 2001-03-24 | 2002-09-26 | Zf Sachs Ag | Multiple-disk clutch has a pressing plate and an intermediate plate which are impinged upon by a force to be directed onto a clutch plate or a further clutch plate using a rotating coupling device |
| CN102518717A (en) * | 2011-10-27 | 2012-06-27 | 奇瑞汽车股份有限公司 | Electronic mechanical brake and vehicle |
| CN103016573A (en) * | 2012-12-20 | 2013-04-03 | 江苏大学 | Complete disc anti-blocking brake |
| CN203627611U (en) * | 2013-11-28 | 2014-06-04 | 重庆建设摩托车股份有限公司 | Piston pushing mechanism of motorcycle composite braking system |
| WO2017149829A1 (en) * | 2016-03-04 | 2017-09-08 | Ｇｋｎ ドライブライン ジャパン株式会社 | Cam mechanism and clutch device using said cam mechanism |
| US20170314626A1 (en) * | 2016-03-07 | 2017-11-02 | Rolls-Royce Corporation | Lift fan clutch plate to reduce instability |
| CN106704419A (en) * | 2017-02-15 | 2017-05-24 | 三环集团有限公司 | Braking force transmission mechanism of disc brake |
| CN106763311A (en) * | 2017-02-15 | 2017-05-31 | 三环集团有限公司 | Full-disc brake with clearance compensation function |
| CN206522382U (en) * | 2017-02-15 | 2017-09-26 | 三环集团有限公司 | A kind of complete disc brake with clearance compensation function |
| CN206522383U (en) * | 2017-02-15 | 2017-09-26 | 三环集团有限公司 | A kind of complete disc brake sealing device |
| CN106884911A (en) * | 2017-04-17 | 2017-06-23 | 湖南世鑫新材料有限公司 | A kind of bullet train complete disc brake with excellent heat dispersion performance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360902A (en) * | 2020-10-29 | 2021-02-12 | 河北埃克斯福动力科技有限公司 | Full-disc brake and floating disc force transmission mechanism thereof |
| CN115247681A (en) * | 2021-07-27 | 2022-10-28 | 河北埃克斯福动力科技有限公司 | Transmission device of full-disc brake and full-disc brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110821981B (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6763918B1 (en) | Actuator having compact gear reduction | |
| EP1837555B1 (en) | Electric direct-acting actuator and electric brake device | |
| CN110821981B (en) | Full-disc brake for heavy vehicle | |
| EP2891823B1 (en) | Electric linear motion actuator and electric disk brake system | |
| KR20100043694A (en) | Electronic mechanical drum brake | |
| US11719296B2 (en) | Brake system with torque distributing assembly | |
| CN211175128U (en) | Full-disc brake | |
| US11292438B2 (en) | Friction brake and vehicle-mounted apparatus | |
| JP5466259B2 (en) | Disc brake booster | |
| HU203704B (en) | Epicyclic-gear carriage | |
| CN111322331A (en) | Clearance adjustment device for disc brake | |
| CN111503188B (en) | Actuating mechanism for vehicle full-disc brake | |
| CN211175137U (en) | Force increasing mechanism for vehicle full-disc brake | |
| CN112413006B (en) | Disc brake and vehicle | |
| CN212055585U (en) | Basic brake device | |
| EP2014947A1 (en) | Servo disc brake device | |
| US20200182320A1 (en) | Brake piston having a non-circular end face for a disc brake assembly with an electric parking brake | |
| US3946838A (en) | Fail-safe disc brake | |
| CN217029744U (en) | Disc type double-brake automobile brake device | |
| CN215567554U (en) | Push rod of full-disc brake | |
| CN218063170U (en) | EMB brake | |
| CN215908291U (en) | Brake clearance automatic adjusting mechanism of full disc brake | |
| CN216407558U (en) | Disc brake | |
| CN114704570B (en) | Braking mechanism and brake | |
| CN102442284B (en) | Electronic mechanical brake and automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200520 Address after: No. 1606, floor 16, unit 1, Xinyu international block B, Weixian Economic Development Zone, Handan City, Hebei Province Applicant after: Hebei Exxon Power Technology Co.,Ltd. Address before: 056800 No.5 Jianye street, Weixian Economic Development Zone, Handan City, Hebei Province Applicant before: Hebei aiste vehicle and Bridge Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.1606, 16 / F, unit 1, block B, Xinyu international, Handan Economic Development Zone, Hebei Province 056000 Applicant after: Hebei Exxon Power Technology Co.,Ltd. Address before: No. 1606, 16 / F, unit 1, block B, Xinyu international, Weixian Economic Development Zone, Handan City, Hebei Province Applicant before: Hebei Exxon Power Technology Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220307 Address after: 056800 Weixian Economic Development Zone, Handan City, Hebei Province Patentee after: HEBEI ASTERIA TECHNOLOGY CO.,LTD. Address before: No.1606, 16 / F, unit 1, block B, Xinyu international, Handan Economic Development Zone, Hebei Province 056000 Patentee before: Hebei Exxon Power Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220905 Address after: 056800 West Jianye street, Weixian Development Zone, Handan City, Hebei Province Patentee after: Hebei Weikete Machinery Technology Co.,Ltd. Address before: 056800 Weixian Economic Development Zone, Handan City, Hebei Province Patentee before: HEBEI ASTERIA TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20240603 Address after: 056000 West Jianye street, Weixian Development Zone, Handan City, Hebei Province Patentee after: HEBEI HENG SHENG MACHINERY TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 056800 West Jianye street, Weixian Development Zone, Handan City, Hebei Province Patentee before: Hebei Weikete Machinery Technology Co.,Ltd. Country or region before: China |