CN107387601B - Wheel type double-sided braking system of automobile - Google Patents
Wheel type double-sided braking system of automobile Download PDFInfo
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- CN107387601B CN107387601B CN201710683986.0A CN201710683986A CN107387601B CN 107387601 B CN107387601 B CN 107387601B CN 201710683986 A CN201710683986 A CN 201710683986A CN 107387601 B CN107387601 B CN 107387601B
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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
- F16D53/00—Brakes with braking members co-operating with both the periphery and the inner surface of a drum, wheel-rim, or the like
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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
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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
- F16D65/78—Features relating to cooling
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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
- F16D65/78—Features relating to cooling
- F16D2065/788—Internal cooling channels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides an automobile wheel type double-sided braking system which comprises an axle and a wheel hub, wherein the inner side of the wheel hub is connected with a brake wheel which synchronously runs with the wheel hub, the automobile wheel type double-sided braking system is of a cylinder structure, a circumferential enclasping brake shoe is arranged on the outer peripheral surface of the brake wheel, a circumferential opening brake shoe is arranged on the inner peripheral surface of the brake wheel, an inner synchronous driving mechanism, an outer synchronous driving mechanism and a hinging positioning mechanism are arranged on the axle on the inner side of the brake wheel, one ends of the circumferential enclasping brake shoe and the circumferential opening brake shoe are hinged with the hinging positioning mechanism, and the other ends of the circumferential enclasping brake shoe and the circumferential opening brake shoe are configured with the inner synchronous driving mechanism and the outer synchronous driving mechanism, so that Zhang Waibao synchronous braking in the brake wheel is realized. The inner Zhang Waibao braking mode of the inner and outer braking surfaces of the braking wheel greatly increases the braking area, effectively shortens the braking distance, evenly distributes the stress intensity of the braking part, prolongs the service life of braking, reduces the abrasion of the friction plate and avoids braking heating.
Description
Technical Field
The invention belongs to the technical field of automobile axle braking, and particularly relates to an automobile wheel type double-sided braking system.
Background
The existing trucks and passenger automobiles commonly use drum brakes or disc brakes to form an internal-expansion braking mode, and the braking performance of the internal-expansion braking mode is improved for many times, but the internal-expansion braking mode has the defects of high friction heating speed, low heat dissipation speed, long braking distance and the like under the conditions of heavy load and long downhill deceleration or emergency braking, and becomes a great potential safety hazard in vehicle running. In order to solve the problems, a circumferential enclasping brake structure and a circumferential enclasping brake mode are proposed at present, but the conventional circumferential enclasping brake device only can be applied to the outer circumferential surface of a brake wheel, the brake area is small, the brake distance is large, and the heat dissipation efficiency is low. The brake performance of the internal Zhang Haishi external holding type brake is improved only in a single-mechanism braking mode.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the automobile wheel type double-sided braking system aiming at the defects in the prior art, wherein the braking force is distributed internally and externally, the braking area is large, the braking performance can be improved, and the service life is prolonged.
The invention adopts the technical proposal for solving the problems that: the utility model provides an automobile wheel formula double-sided braking system, includes axletree and wheel hub, the inboard connection of wheel hub is rather than synchronous operation's brake pulley, and the brake pulley is cylinder structure, and its characterized in that, corresponding to the outer peripheral face of brake pulley install the circumference and hold the brake shoe tightly, the circumference holds the brake shoe and includes the left and right hoops of semicircle arc that has outer return mechanism, corresponding to the inner peripheral face of brake pulley installs the circumference and opens the brake shoe, circumference opens the brake shoe and includes the left and right hoops of semicircle arc that has interior return mechanism, is equipped with inside and outside synchronous actuating mechanism and articulated positioning mechanism on the axletree of brake pulley inboard, the one end that left and right held the hoops and left and right and open the hoops is articulated end, articulated positioning mechanism articulated, and the other end is the drive end that opens and closes, with inside and outside synchronous actuating mechanism disposes, realizes braking in the brake pulley Zhang Waibao synchronization.
According to the scheme, the inner synchronous driving mechanism and the outer synchronous driving mechanism comprise a cam shaft support and an adjusting arm support, wherein the cam shaft support and the adjusting arm support are arranged on the axle at intervals, the cam shaft is arranged on the cam shaft support and the adjusting arm support in a penetrating mode, the rear end of the cam shaft is connected with the adjusting arm, an inner S-shaped cam and an outer S-shaped cam are arranged at the front end of the cam shaft, the outer S-shaped cam is configured with the inner ends of a left braking arm and a right braking arm hinged to the cam shaft support, the outer ends of the left braking arm and the right braking arm are connected with the opening and closing driving ends of the left clamping shoe and the right clamping shoe, and the inner S-shaped cam is configured with the opening and closing driving ends of the left opening shoe and the right opening shoe.
According to the scheme, the outer ends of the inner side end surfaces of the left brake arm and the right brake arm are provided with the driving blocks extending backwards, the middle part of the outer side end surface is provided with the hinging shaft extending forwards, the lower end is provided with the arc-shaped protruding blocks, the driving blocks are connected with the opening and closing driving ends of the left and right holding hoops, the hinging shaft is hinged with the cam shaft support, and the arc-shaped protruding blocks are configured with the outer S-shaped cam.
According to the scheme, the articulated ends of the left and right holding hooves are provided with connecting arms extending along the circumferential direction, the connecting arms are provided with outer hoof shaft holes, the left and right holding hooves are articulated with the articulated positioning mechanism through the connecting arms, the inner walls of the opening and closing driving ends of the left and right holding hooves are provided with driving grooves matched with the driving blocks, the outer profile of the front side of the driving blocks is involute, the front side of the driving blocks is meshed with the front side of the driving grooves, and the inner circumferential surfaces of the left and right holding hooves are provided with friction plates.
According to the scheme, the hinged ends of the left and right open hooves are respectively provided with an inner hoof shaft hole, the inner hoof shaft is hinged with the hinged positioning mechanism, the ends of the open and close driving ends of the left and right open hooves are respectively provided with a roller, the rollers are configured with the inner S-shaped cams, and the outer peripheral surfaces of the left and right open hooves are provided with friction plates.
According to the scheme, the inner S-shaped cam and the outer S-shaped cam are composed of two arc-shaped wing blocks with gradually increased rotating radiuses, the rotating radiuses of the inner S-shaped cam are smaller than those of the outer S-shaped cam, a spline is arranged at the driving end of the cam shaft, and the spline is configured with the adjusting arm.
According to the scheme, the camshaft support is of an L-shaped plate structure and comprises a bottom plate and a supporting plate, the bottom plate is connected with the axle, two sides of the upper portion of the supporting plate are symmetrically provided with hinge holes, the center of the lower portion of the supporting plate is provided with a supporting hole, the hinge holes are connected with the hinge shafts through bearings, and the supporting holes are connected with the camshaft through bearings.
According to the scheme, the hinge positioning mechanism comprises a shoe shaft support, the shoe shaft support comprises an inner hinge hole seat and an outer hinge hole seat which are arranged in parallel at intervals, the bottom of the inner hinge hole seat is fixedly connected with the axle, the outer hinge hole seat is hinged with the connecting arms of the left and right holding shoes, and the inner hinge hole seat is hinged with the hinge ends of the left and right opening shoes.
According to the scheme, the outer return mechanism comprises an outer return spring arranged at the outer side ends of the opening and closing driving ends of the left hooping shoe and the right hooping shoe, a bidirectional torsion spring arranged between the connecting arm and the outer hinge hole seat, and a spring reversing device, wherein the spring reversing device comprises a reversing support, a reversing tension spring and a reversing return spring, two sides of a bottom plate of the camshaft support are hinged with one end of the reversing support respectively, two sides of the bottom of the inner hinge hole seat are connected with one end of the reversing tension spring respectively, the opening and closing driving ends of the left hooping shoe and the right hooping shoe are connected with one end of the reversing return spring respectively, the other end of the reversing tension spring is connected with the middle part of the reversing support, and the other end of the reversing return spring is connected with the other end of the reversing support.
According to the scheme, the internal return mechanism comprises front and rear return springs arranged on the front side and the rear side of the hinged end of the left and right stretching hoops and an internal return spring arranged on the stretching driving end of the left and right stretching hoops.
According to the scheme, the brake wheel comprises an outer cylinder and an inner cylinder which are coaxially arranged, a plurality of connecting rib plates are uniformly arranged between the outer cylinder and the inner cylinder at intervals, a radiating air duct is formed by gaps among the plurality of connecting rib plates, the outer circumferential surface of the outer cylinder is an outer braking surface, the inner circumferential surface of the inner cylinder is an inner braking surface, the outer braking surface and the inner braking surface are respectively configured with friction plates arranged on the left and right holding hooves and the left and right opening hooves, and a plurality of exhaust grooves are uniformly arranged on the end surfaces of the brake wheel connected with the hub at intervals along the circumferential direction.
According to the scheme, the inner side end of the brake wheel is provided with the wind-guiding dust cover, the wind-guiding dust cover comprises a left cover body and a right cover body, the upper end and the lower end of the left cover body and the right cover body are respectively connected with the shoe shaft support and the cam shaft support, and the left cover body and the right cover body are respectively provided with the left wind-guiding cover and the right wind-guiding cover.
According to the scheme, the left cover body and the right cover body respectively comprise a rear shell body with an arc outer edge and an arc side shell body arranged along the outer edge of the rear shell body, an air inlet is formed in the rear shell body, and the left air guide cover and the right air guide cover are of U-shaped shell structures with gradually-reduced calibers and correspond to the air inlet.
The beneficial effects of the invention are as follows: 1. the outer circumference enclasping braking and the inner Zhou Zhangkai braking of the braking wheel are arranged, an inner Zhang Waibao synchronous braking mechanism is adopted, the braking force is distributed internally and externally, the workload of one set of mechanism is shared by the inner braking mechanism and the outer braking mechanism, the damage of the breaking of the braking drum can be avoided, the braking performance is stable, the friction area is obviously increased, the braking distance is shortened, and the braking efficiency of an automobile is improved; 2. the air guide dust cover is arranged, so that abrasion caused by dust entering can be reduced, heat dissipation efficiency is improved, the service life of the device is prolonged, the outstanding contradiction between braking force and braking heating is effectively solved, and the stability and safety of automobile braking are further improved.
Drawings
FIG. 1 is a split schematic of one embodiment of the present invention.
Fig. 2 is an axial half-sectional view of one embodiment of the present invention.
Fig. 3 is a bottom view of one embodiment of the present invention.
Fig. 4 is a split view of a shoe shaft support and cam shaft support according to one embodiment of the present invention.
Fig. 5 is a front view of a shoe shaft support and cam shaft support in one embodiment of the present invention.
Fig. 6 is an isometric view of an assembly of a left hugging shoe and a left brake arm in an embodiment of the present invention.
Fig. 7 is a cross-sectional view of a left hooping shoe in an embodiment of the present invention.
Fig. 8 is an isometric view of a right brake arm in one example embodiment of the invention.
Fig. 9 is an isometric view of a cam shaft in one example embodiment of the invention.
Fig. 10 is an isometric view of a brake wheel according to one embodiment of the present invention.
FIG. 11 is an isometric view of an air deflection dust cap according to one embodiment of the invention.
FIG. 12 is an exploded isometric view of a brake wheel and hub according to one embodiment of the present invention.
Wherein: axle 1, brake wheel 2, hub 3, left holding shoe 4, right holding shoe 5, friction plate 6, left opening shoe 7, right opening shoe 8, exhaust groove 9, shoe shaft support 10, outer shoe shaft 11, inner shoe shaft 12, outer return spring 13, inner return spring 14, connecting arm 15, bidirectional torsion spring 16, drive groove 17, roller 18, camshaft support 19, adjusting arm support 20, camshaft 21, left brake arm 22, inner S-shaped cam 23, outer S-shaped cam 24, spline 25, adjusting arm 26, arc-shaped bump 27, drive block 28, hinge shaft 29, bottom plate 30, back plate 31, hinge hole 32, support hole 33, bearing 34, reversing bracket 35, reversing tension spring 36, reversing return spring 37, front return spring 38, rear return spring 39, left housing 40, right housing 41, left air guide housing 42, right air guide housing 43, air intake 44, connecting 45, air duct 46, outer cylinder 47, inner cylinder 48, right brake arm 49.
Detailed Description
For a better understanding of the present invention, reference is made to the following description of the invention taken in conjunction with the accompanying drawings and examples.
As shown in fig. 1-3, an automobile wheel type double-sided braking system comprises an axle 1 and a hub 3, wherein the inner side of the hub is connected with a brake wheel 2 which synchronously runs with the hub, the brake wheel is of a cylinder structure, a circumferential clamping brake shoe is arranged corresponding to the outer peripheral surface of the brake wheel, the circumferential clamping brake shoe comprises a semicircular left clamping shoe 4 and a right clamping shoe 5 with outer return mechanisms, a circumferential opening brake shoe is arranged corresponding to the inner peripheral surface of the brake wheel, the circumferential opening brake shoe comprises a semicircular left opening shoe 7 and a right opening shoe 8 with inner return mechanisms, an inner synchronous driving mechanism and an outer synchronous driving mechanism and a hinged positioning mechanism are arranged on the axle on the inner side of the brake wheel, one ends of the left clamping shoe, the right clamping shoe and the left opening shoe are hinged ends, the other ends of the left clamping shoe and the right opening shoe are hinged with the hinged positioning mechanism, and the other ends of the left clamping shoe and the right clamping shoe are provided with open driving ends, and the left clamping shoe is configured with the inner synchronous driving mechanism and the outer synchronous driving mechanism, and synchronous braking of the brake wheel Zhang Waibao is realized.
As shown in fig. 6 to 9, the inner and outer synchronous driving mechanism comprises a cam shaft support 19 and an adjusting arm support 20 which are arranged on the axle at intervals from front to back, wherein a cam shaft 21 is arranged on the cam shaft support and the adjusting arm support in a penetrating manner, the rear end of the cam shaft is connected with an adjusting arm 26, an inner S-shaped cam 23 and an outer S-shaped cam 24 are arranged at the front end of the cam shaft, the outer S-shaped cam is configured with the inner ends of a left brake arm 22 and a right brake arm 49 hinged on the cam shaft support, the outer ends of the left brake arm and the right brake arm are connected with the opening and closing driving ends of a left clamping shoe and a right clamping shoe, and the inner S-shaped cam is configured with the opening and closing driving ends of the left opening shoe and the right opening shoe.
The outer ends of the inner side end surfaces of the left brake arm and the right brake arm are provided with driving blocks 28 extending backwards, the middle part of the outer side end surface is provided with a hinging shaft 29 extending forwards, the lower end is provided with an arc-shaped convex block 27, the driving blocks are connected with the opening and closing driving ends of the left hooping shoe and the right hooping shoe, the hinging shaft is hinged with a cam shaft support, and the arc-shaped convex block is configured with an outer S-shaped cam.
The articulated ends of the left and right holding hooves are provided with connecting arms 15 extending along the circumferential direction, the connecting arms are provided with outer hoof shaft holes, the left and right holding hooves are articulated with the articulated positioning mechanism through outer hoof shafts 11, the inner walls of the opening and closing driving ends of the left and right holding hooves are provided with driving grooves 17 matched with the driving blocks, the outer profile of the front side of the driving blocks is involute, the front side of the driving blocks is meshed with the front side of the driving grooves, and the inner peripheral surfaces of the left and right holding hooves are provided with friction plates 6.
The hinged ends of the left and right open hoops are respectively provided with an inner hoop shaft hole, the inner hoop shaft 12 is hinged with the hinged positioning mechanism, the ends of the open and close driving ends of the left and right open hoops are respectively provided with a roller 18, the rollers are configured with an inner S-shaped cam, and the outer peripheral surfaces of the left and right open hoops are provided with friction plates.
The inner S-shaped cam and the outer S-shaped cam are composed of two arc-shaped wing blocks with gradually increased rotating radiuses, the rotating radiuses of the inner S-shaped cam are smaller than those of the outer S-shaped cam, a spline 25 is arranged at the driving end of the cam shaft, and the spline is configured with the adjusting arm.
As shown in fig. 4 and 5, the camshaft support has an L-shaped plate structure, which includes a bottom plate 30 and a support plate 31, the bottom plate is connected with the axle, two sides of the upper portion of the support plate are symmetrically provided with hinge holes 32, the center of the lower portion is provided with a support hole 33, the hinge holes are connected with the hinge shaft through bearings 34, and the support holes are connected with the camshaft through bearings.
The hinging and positioning mechanism comprises a shoe shaft bracket 10, wherein the shoe shaft bracket comprises an inner hinging hole seat and an outer hinging hole seat which are arranged in parallel at intervals, the bottom of the inner hinging hole seat is fixedly connected with an axle, the outer hinging hole seat is hinged with connecting arms of left and right holding hooves, and the inner hinging hole seat is hinged with hinging ends of left and right opening hooves.
The outer return mechanism comprises an outer return spring 13 arranged at the outer side ends of the opening and closing driving ends of the left hooping shoe and the right hooping shoe, a bidirectional torsion spring 16 arranged between the connecting arm and the outer hinge hole seat and a spring reversing device, the spring reversing device comprises a reversing support 35, a reversing tension spring 36 and a reversing return spring 37, two sides of a bottom plate of the camshaft support are hinged with one end of the reversing support respectively, two sides of the bottom of the inner hinge hole seat are connected with one end of the reversing tension spring respectively, the opening and closing driving ends of the left hooping shoe and the right hooping shoe are connected with one end of the reversing return spring respectively, the other end of the reversing tension spring is connected with the middle part of the reversing support, and the other end of the reversing return spring is connected with the other end of the reversing support. The reversing support is arranged to enable the reversing return spring and the reversing tension spring to be compressed or stretched along the axial direction, and the reversing return spring and the reversing tension spring can be positioned on the same straight line under the state that the left and right holding hoofs are held tightly or opened and returned by braking, so that labor is saved, convenience and quickness are realized, the spring is prevented from deforming, and the service life is prolonged.
The inner return mechanism comprises a front return spring 38 and a rear return spring 39 which are arranged on the front side and the rear side of the hinged end of the left and right stretching hooves and an inner return spring 14 which is arranged on the stretching driving end of the left and right stretching hooves.
As shown in fig. 10 and 12, the brake wheel is composed of an outer cylinder 47 and an inner cylinder 48 which are coaxially arranged, a plurality of connecting rib plates 45 are uniformly arranged between the outer cylinder and the inner cylinder at intervals, a radiating air duct 46 is formed by gaps among the plurality of connecting rib plates, the outer circumferential surface of the outer cylinder is an outer braking surface, the inner circumferential surface of the inner cylinder is an inner braking surface, the outer braking surface and the inner braking surface are respectively configured with friction plates arranged on left and right holding hooves and left and right opening hooves, and a plurality of exhaust grooves 9 are uniformly arranged on the end surfaces of the brake wheel connected with the hub at intervals along the circumferential direction.
The inner side end of the brake wheel is provided with an air guide dust cover which comprises a left cover body 40 and a right cover body 41, the upper end and the lower end of the left cover body and the lower end of the right cover body are respectively connected with a shoe shaft bracket and a cam shaft support, and the left cover body and the right cover body are respectively provided with a left air guide cover 42 and a right air guide cover 43.
The left and right covers all include the outer fringe is curved back casing and follows the curved side casing that the back casing outer fringe set up, are equipped with air intake 44 on the back casing, and left and right wind scooper is the bore and gradually reduces "U" type shell structure, corresponds the air intake sets up.
The braking process is as follows: the inner S-shaped cam is positioned between two rollers of the left and right expanding shoes, the outer S-shaped cam is positioned between two arc-shaped convex blocks of the left and right braking arms, the left and right wing blocks of the inner and outer S-shaped cams are respectively matched with the rollers and the arc-shaped convex blocks, the cam shaft is rotated, when the two wings of the inner S-shaped cam respectively act on the two rollers, the two rollers move in opposite directions along with the rotation of the inner S-shaped cam, so as to drive the left and right expanding shoes to swing in opposite directions, the front and back return springs are contracted, the left and right expanding shoes are in an outward expanding state, the expanding braking shoes are in an increasingly tight braking state, when the distance between the two rollers is the largest, namely, the two wing blocks of the inner S-shaped cam form a 180-degree angle with the connecting line of the two rollers, the inner return spring is in a stretching state, the braking force of the outer supporting brake shoe reaches the maximum value, at the moment, two wings of the outer S-shaped cam respectively act on two arc-shaped convex blocks, the left brake arm and the right brake arm rotate around the hinge shaft, the distance between the two arc-shaped convex blocks is increased, the two driving blocks synchronously rotate in the driving groove, so that the left clamping shoe piece and the right clamping shoe piece are driven to swing relatively, the outer return spring is compressed, the left clamping shoe piece and the right clamping shoe piece are in an inward clamping state, so that the clamping brake shoe is in an increasingly tight braking state, and when the distance between the two arc-shaped convex blocks is the maximum, namely, the two wing blocks of the outer S-shaped cam are horizontally connected with the two arc-shaped convex blocks to form a 180-degree angle, at the moment, the braking force of the clamping brake shoe reaches the maximum value, and the braking process of a vehicle is completed; the cam shaft is rotated, when the distance between the two rollers is minimum, namely, the two wing blocks of the inner S-shaped cam are perpendicularly connected with the two rollers to form an angle of 90 degrees, the distance between the two rollers is minimum, the inner return tension spring is reset, at the moment, the left open shoe and the right open shoe rotate relatively, the circumferentially open brake shoe returns to a non-braking state with a circumferential gap of the brake wheel in time, at the moment, the distance between the two arc-shaped convex blocks is minimum, namely, the two wing blocks of the outer S-shaped cam are perpendicularly connected with the left arc-shaped convex block and the right arc-shaped convex block to form an angle of 90 degrees, the outer return spring is reset, at the moment, the left holding shoe and the right holding shoe rotate in opposite directions, and the circumferentially holding brake shoe returns to the non-braking state with the circumferential gap of the brake wheel in time.
Claims (13)
1. The utility model provides an automobile wheel formula double-sided braking system, includes axletree and wheel hub, the inboard connection of wheel hub is rather than synchronous operation's brake pulley, and the brake pulley is cylinder structure, and its characterized in that, corresponding to the outer peripheral face of brake pulley install the circumference and hold the brake shoe tightly, the circumference holds the brake shoe and includes the left and right hoops of semicircle arc that has outer return mechanism, corresponding to the inner peripheral face of brake pulley installs the circumference and opens the brake shoe, circumference opens the brake shoe and includes the left and right hoops of semicircle arc that has interior return mechanism, is equipped with inside and outside synchronous actuating mechanism and articulated positioning mechanism on the axletree of brake pulley inboard, the one end that left and right held the hoops and left and right and open the hoops is articulated end, articulated positioning mechanism articulated, and the other end is the drive end that opens and closes, with inside and outside synchronous actuating mechanism disposes, realizes braking in the brake pulley Zhang Waibao synchronization.
2. The automobile wheel type double-sided braking system as claimed in claim 1, wherein the inner and outer synchronous driving mechanism comprises a cam shaft support and an adjusting arm support which are arranged on the axle at intervals from front to back, a cam shaft is arranged on the cam shaft support and the adjusting arm support in a penetrating manner, the rear end of the cam shaft is connected with the adjusting arm, an inner S-shaped cam and an outer S-shaped cam are arranged at the front end of the cam shaft, the outer S-shaped cam is configured with the inner ends of left and right braking arms hinged on the cam shaft support, the outer ends of the left and right braking arms are connected with the opening and closing driving ends of the left and right holding hoops, and the inner S-shaped cam is configured with the opening and closing driving ends of the left and right opening hoops.
3. The wheel type double-sided braking system for the automobile according to claim 2, wherein the outer ends of the inner side end surfaces of the left and right braking arms are provided with driving blocks extending backwards, the middle part of the outer side end surface is provided with a hinging shaft extending forwards, the lower end is provided with an arc-shaped protruding block, the driving blocks are connected with the opening and closing driving ends of the left and right holding hoops, the hinging shaft is hinged with the cam shaft support, and the arc-shaped protruding block is configured with the outer S-shaped cam.
4. The wheel-type double-sided braking system for the automobile according to claim 3, wherein the hinged ends of the left and right holding shoes are respectively provided with a connecting arm extending along the circumferential direction, the connecting arms are provided with outer shoe shaft holes, the left and right holding shoes are hinged with the hinged positioning mechanism through the connecting arms, the inner walls of the opening and closing driving ends of the left and right holding shoes are provided with driving grooves matched with the driving blocks, the profile of the front side surface of the driving block is involute, the profile of the front side surface of the driving block is meshed with the front side surface of the driving groove, and the inner peripheral surfaces of the left and right holding shoes are provided with friction plates.
5. A wheel type double-sided braking system for an automobile according to claim 3, wherein the hinge ends of the left and right open hoops are respectively provided with an inner hoop shaft hole, the hinge positioning mechanism is hinged with the hinge positioning mechanism through the inner hoop shaft, the ends of the open and close driving ends of the left and right open hoops are respectively provided with a roller, the rollers are configured with the inner S-shaped cams, and the outer peripheral surfaces of the left and right open hoops are provided with friction plates.
6. The automobile wheel type double-sided braking system as set forth in claim 5, wherein the inner and outer S-shaped cams are each composed of two arc-shaped wing blocks with gradually increased rotating radiuses, which are arranged in a central symmetry manner, the rotating radiuses of the inner S-shaped cams are smaller than those of the outer S-shaped cams, and the driving end of the cam shaft is provided with a spline which is configured with the adjusting arm.
7. The automotive wheel type double-sided brake system as set forth in claim 6, wherein the camshaft support has an "L" -shaped plate structure including a bottom plate and a support plate, the bottom plate being coupled to the axle, the support plate being provided at both sides of an upper portion thereof with hinge holes symmetrically, and a support hole being provided at a center of a lower portion thereof, the hinge holes being coupled to the hinge shaft by bearings, and the support hole being coupled to the camshaft by bearings.
8. The wheel-type double-sided braking system of claim 5, wherein the hinge positioning mechanism comprises a shoe shaft bracket, the shoe shaft bracket comprises an inner hinge hole seat and an outer hinge hole seat which are arranged at intervals in parallel, the bottom of the inner hinge hole seat is fixedly connected with the axle, the outer hinge hole seat is hinged with the connecting arms of the left and right holding hoops, and the inner hinge hole seat is hinged with the hinged ends of the left and right opening hoops.
9. The automobile wheel type double-sided braking system of claim 8, wherein the outer return mechanism comprises an outer return spring arranged at the outer side ends of the opening and closing driving ends of the left and right holding hoops, a bidirectional torsion spring arranged between the connecting arm and the outer hinge hole seat, and a spring reversing device, wherein the spring reversing device comprises a reversing support, a reversing tension spring and a reversing return spring, two sides of a bottom plate of the camshaft support are respectively hinged with one end of the reversing support, two sides of the bottom of the inner hinge hole seat are respectively connected with one end of the reversing tension spring, the opening and closing driving ends of the left and right holding hoops are respectively connected with one end of the reversing return spring, the other end of the reversing tension spring is connected with the middle part of the reversing support, and the other end of the reversing return spring is connected with the other end of the reversing support.
10. The wheel-type double-sided brake system of claim 8, wherein the inner return mechanism comprises front and rear return springs provided on both sides of the hinged ends of the left and right open shoes and an inner return spring provided on the open and close driving ends of the left and right open shoes.
11. The automobile wheel type double-sided braking system as claimed in claim 10, wherein the braking wheel is composed of an outer cylinder and an inner cylinder which are coaxially arranged, a plurality of connecting rib plates are uniformly arranged between the outer cylinder and the inner cylinder at intervals, gaps among the plurality of connecting rib plates form a heat dissipation air duct, the outer circumferential surface of the outer cylinder is an outer braking surface, the inner circumferential surface of the inner cylinder is an inner braking surface, the outer braking surface and the inner braking surface are respectively configured with friction plates arranged on the left and right holding hoops and the left and right opening hoops, and a plurality of air exhaust grooves are uniformly arranged on the end surfaces of the braking wheel connected with the hub at intervals along the circumferential direction.
12. The wheel type double-sided braking system of claim 11, wherein the inner side of the braking wheel is provided with a wind-guiding dust-proof cover, the wind-guiding dust-proof cover comprises a left cover body and a right cover body, the upper end and the lower end of the left cover body and the right cover body are respectively connected with the shoe shaft bracket and the cam shaft support, and the left cover body and the right cover body are respectively provided with a left wind-guiding cover and a right wind-guiding cover.
13. The wheel-type double-sided braking system of claim 12, wherein the left and right covers comprise a rear housing with an arc outer edge and an arc side housing arranged along the outer edge of the rear housing, the rear housing is provided with an air inlet, and the left and right air guide covers are of a U-shaped housing structure with a gradually reduced caliber and are arranged corresponding to the air inlet.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683986.0A CN107387601B (en) | 2017-08-11 | 2017-08-11 | Wheel type double-sided braking system of automobile |
| PCT/CN2018/093115 WO2019029288A1 (en) | 2017-08-11 | 2018-06-27 | Vehicle wheel double-sided braking system |
| DE112018004125.5T DE112018004125T5 (en) | 2017-08-11 | 2018-06-27 | A double-sided vehicle wheel braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683986.0A CN107387601B (en) | 2017-08-11 | 2017-08-11 | Wheel type double-sided braking system of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107387601A CN107387601A (en) | 2017-11-24 |
| CN107387601B true CN107387601B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710683986.0A Active CN107387601B (en) | 2017-08-11 | 2017-08-11 | Wheel type double-sided braking system of automobile |
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| Country | Link |
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| CN (1) | CN107387601B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112018004125T5 (en) * | 2017-08-11 | 2020-05-07 | Hubei Zhonger Axle Air Suspension Technology Co., Ltd. | A double-sided vehicle wheel braking system |
| CN109667856B (en) * | 2018-12-30 | 2021-03-02 | 河北百龙汽车配件股份有限公司 | Bidirectional efficient heat dissipation drum type braking device |
| CN112780702A (en) * | 2020-11-26 | 2021-05-11 | 苏州立科工业设计有限公司 | Hydraulic power generation equipment braking mechanism for new energy development |
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| US4007813A (en) * | 1974-12-10 | 1977-02-15 | Glenn Talley Randol | Drum-type service and emergency brake |
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|---|---|---|---|---|
| GB237429A (en) * | 1924-07-29 | 1925-07-30 | Ernest Smith Coward | Improvements in or relating to brakes for motor vehicles |
| GB746812A (en) * | 1954-07-23 | 1956-03-21 | Detroit Duo Grip Brake Corp | Improvements relating to a brake assembly |
| US4007813A (en) * | 1974-12-10 | 1977-02-15 | Glenn Talley Randol | Drum-type service and emergency brake |
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| CN107387601A (en) | 2017-11-24 |
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