CN112855800A - Wheel emergency braking equipment of unmanned automobile - Google Patents
Wheel emergency braking equipment of unmanned automobile Download PDFInfo
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- CN112855800A CN112855800A CN202110086234.2A CN202110086234A CN112855800A CN 112855800 A CN112855800 A CN 112855800A CN 202110086234 A CN202110086234 A CN 202110086234A CN 112855800 A CN112855800 A CN 112855800A
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- brake
- worm
- sleeve
- emergency braking
- hydraulic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/24—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/067—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing drum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
- F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
- F16D66/024—Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact
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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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D69/0416—Attachment of linings specially adapted for curved linings
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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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/003—Position, angle or speed
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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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D2069/0425—Attachment methods or devices
- F16D2069/0433—Connecting elements not integral with the braking member, e.g. bolts, rivets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
The utility model provides a wheel emergency braking equipment of unmanned vehicle, includes braking bottom plate and brake drum, braking bottom plate's inner wall rotates and links to each other there is the brake drum, braking bottom plate's front side center is provided with drive assembly, drive assembly includes riser, pneumatic cylinder, branch, even board, hydraulic stem, sleeve and hydraulic fluid port, the lower extreme of riser is inside all to rotate continuously through round pin axle and a plurality of branches, the upper and lower both sides of pneumatic cylinder all are linked together through hydraulic fluid port and external hydraulic pressure pipeline. This wheel emergency braking equipment of unmanned vehicle, structure scientific and reasonable, convenience safe in utilization, through the cooperation between pneumatic cylinder, hydraulic stem, even board, sleeve, riser, branch and the brake drum, but the steerable pneumatic cylinder of test command makes the hydraulic stem stretch out from the inside of pneumatic cylinder, has avoided that braking equipment resets and can't reset through hydraulic pressure and spring common control through spring control and leads to the easy impaired problem of long-term use spring.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to wheel emergency braking equipment of an unmanned automobile.
Background
Since the 70 s in the 20 th century, research on unmanned vehicles has been conducted in developed countries such as the united states, the united kingdom, and germany, and both feasibility and practical applications have been made. The research on unmanned vehicles was carried out in China from the 80 s in the 20 th century, and the national defense science and technology university succeeded in 1992 in developing the first unmanned vehicle in the true sense in China, which is one of intelligent vehicles and is also called a wheeled mobile robot.
But the emergency braking equipment of prior art has the problem that the reset of braking equipment can not be controlled through hydraulic pressure and spring together through spring control and leads to the easy impaired problem of long-term use spring when using, and the position adjustment of brake shoe leads to wearing and tearing to cause the problem that the brake ability is not enough after the certain time of inconvenient carrying on, need to dismantle whole braking equipment just can adjust and can't directly adjust through external control problem still exist simultaneously and do not have the wearing and tearing ability of audio-visual demonstration friction lining and lead to the problem that needs the user to rely on the sense control.
Disclosure of Invention
The purpose of the invention is: the utility model provides a wheel emergency braking equipment of unmanned vehicle to solve the braking equipment that the prior art proposed just can not control through hydraulic pressure and spring jointly through spring control and reset and lead to the easy impaired problem of long-term use spring to reset.
The technical scheme of the invention is as follows: the wheel emergency braking equipment of the unmanned automobile comprises a brake bottom plate and a brake drum, wherein the inner wall of the brake bottom plate is connected with the brake drum in a rotating mode, and a driving assembly is arranged in the center of the front side of the brake bottom plate; the driving assembly comprises a vertical plate, a hydraulic cylinder, a supporting rod, a connecting plate, a hydraulic rod, a sleeve and an oil port; it is a plurality of the pneumatic cylinder is located the front end top left and right sides of braking bottom plate respectively, the inside of pneumatic cylinder is provided with the hydraulic stem, the hydraulic stem laminates with the pneumatic cylinder mutually, the outer wall of hydraulic stem all links to each other with the sleeve is fixed through even board, telescopic inside is provided with the riser, riser and sleeve clearance fit, the lower extreme of riser is inside to be linked to each other through round pin axle and a plurality of branches are all rotated, the upper and lower both sides of pneumatic cylinder all are linked together through hydraulic fluid port and external hydraulic pressure pipeline.
Preferably, the left hydraulic cylinder, the right hydraulic cylinder and the connecting plate are distributed in an axisymmetric manner by taking the vertical center of the brake bottom plate as a reference.
Preferably, the left and right supporting rods have the same included angle with the vertical direction.
Preferably, the inner part and the rear side of the sleeve are provided with adjusting components;
the adjusting assembly comprises a bolt, a displacement sensor, a connecting rod, a worm wheel, a detection sliding block, a servo motor, a worm and a rack;
servo motor rigid coupling is at the inside below center of riser, servo motor's output shaft upper end rigid coupling has the worm, the outer wall top of worm is passed through the bearing and is rotated with the riser and link to each other, the outer wall left and right sides of worm all meshes and links to each other, both sides all rotate with the riser through the bearing around the inside pivot of worm wheel about the outer wall outside of worm wheel all meshes and links to each other there is the rack, and is a plurality of the rack is processed respectively at telescopic left and right sides inner wall center, displacement sensor is located the front end top center of braking bottom plate, both sides are all fixed continuous with the braking bottom plate through the bolt about displacement sensor's the both ends, displacement sensor's front end processing has the detection slider, the front end that detects the slider passes through the connecting rod and links to each other with the riser is fixed, connecting rod and sleeve.
Preferably, a sliding structure is formed between the detection slide block and the displacement sensor.
Preferably, a one-way transmission self-locking structure is formed between the worm and the worm wheel.
Preferably, a brake assembly is mounted inside the brake drum;
the brake assembly comprises a threaded hole, a brake shoe, a return spring, a round rod and a friction lining;
the brake shoes are respectively positioned on the left side and the right side of the interior of the brake drum, round rods are rotatably connected to the interior of the lower portion of each brake shoe, one end of each round rod is fixedly connected with the brake bottom plate, friction linings are fixedly connected to the outer sides of the outer walls of the brake shoes, a plurality of threaded holes are machined in the outer walls of the friction linings and the outer walls of the brake shoes, a reset spring is arranged below the inner side of the outer wall of each brake shoe, and two ends of each reset spring are movably connected with the brake shoes.
Preferably, the brake shoe and the friction lining have surface curvatures that correspond to each other.
Preferably, the base is fixedly connected to the upper end and the lower end of the left side and the lower end of the upper portion of the front end of the brake bottom plate, the inner wall of the base is fixedly connected with the hydraulic cylinder, and through holes are machined in the centers of the inner walls of the brake bottom plate and the brake drum.
Compared with the prior art, the invention has the beneficial effects that: the wheel emergency braking equipment of the unmanned automobile has a scientific and reasonable structure and is safe and convenient to use;
1. through the cooperation between the hydraulic cylinder, the hydraulic rod, the connecting plate, the sleeve, the vertical plate, the support rod and the brake drum, the hydraulic cylinder can be controlled by a detection command, the hydraulic rod extends out of the hydraulic cylinder, the hydraulic rod can drive the support rod to rotate, the support rod can drive the brake shoe to rotate outwards to realize braking, and after the detection distance is safe, the hydraulic rod can be retracted to remove the close fit between the brake shoe and the brake drum;
2. through the matching of the bolt, the displacement sensor, the worm wheel, the detection slide block, the servo motor, the worm, the brake shoe and the vertical plate, the friction lining on the outer wall can be continuously worn and thinned along with the brake of the brake shoe, at the moment, a user needs to rotate the worm wheel through the rotation of the worm, so that the worm can drive the worm wheel to rotate, meanwhile, the vertical plate can move upwards in the sleeve due to the rotation of the worm wheel, the vertical plate drives the brake shoe to move outwards for a certain distance in advance, the initial position adjustment of the brake shoe is realized, and the problem that the brake capacity is insufficient easily caused after the brake shoe is worn for a certain time due to the fact that;
3. the driving power of the worm can be provided by the servo motor, so that the servo motor can drive the worm to rotate, the servo motor has self-locking capability, and the worm wheel and the worm also have self-locking capability, so that the relative positions of the vertical plate and the sleeve can be fixed under the condition that the servo motor is not started, and the problem that the whole braking equipment can be adjusted after being disassembled and cannot be directly adjusted through external control in the prior art is solved;
4. in the process of adjusting the position of the vertical plate, the vertical plate can drive the detection slide block on the displacement sensor to move through the connecting rod, so that a certain distance of the vertical plate in the adjusting process and the positions of the starting position and the ending position can be conveyed to an external signal collection position through the displacement sensor, when the adjusting distance exceeds a preset limit, the fact that the friction lining needs to be replaced can be proved, and the problem that the wear capacity of the friction lining is not visually displayed in the prior art, so that a user needs to rely on feeling control is avoided.
Drawings
FIG. 1 is a schematic front side three-dimensional structure of the present invention;
FIG. 2 is a schematic rear side three-dimensional structure of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1;
FIG. 4 is a front view of the brake shoe, brake shoe and round bar of FIG. 1;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
fig. 6 is a schematic perspective view of the present invention.
In the figure: 1. the brake shoe comprises a brake base plate, 2, a brake assembly, 201, a threaded hole, 202, a brake shoe, 203, a return spring, 204, a round rod, 205, a friction lining, 3, an adjusting assembly, 301, a bolt, 302, a displacement sensor, 303, a connecting rod, 304, a worm wheel, 305, a sliding block, 306, a servo motor, 307, a worm, 308, a rack, 4, a driving assembly, 401, a vertical plate, 402, a hydraulic cylinder, 403, a support rod, 404, a connecting plate, 405, a hydraulic rod, 406, a sleeve, 407, an oil port, 5, a through hole, 6, a base, 7 and a brake drum.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an emergency braking device for wheels of an unmanned vehicle includes a brake base plate 1 and a brake drum 7, the brake drum 7 is rotatably connected to an inner wall of the brake base plate 1, a driving assembly 4 is disposed at a center of a front side of the brake base plate 1, the driving assembly 4 includes a vertical plate 401, a hydraulic cylinder 402, a support rod 403, a connecting plate 404, a hydraulic rod 405, a sleeve 406, and an oil port 407, the hydraulic cylinders 402 are respectively disposed at left and right sides above the front end of the brake base plate 1, the hydraulic cylinder 402 is a HOB light hydraulic cylinder, a hydraulic rod 405 is disposed inside the hydraulic cylinder 402, the hydraulic rod 405 is movable inside the hydraulic cylinder 402 and ensures relative sealing during movement, the hydraulic rod 405 is attached to the hydraulic cylinder 402, outer walls of the hydraulic rod 405 are fixedly connected to the sleeve 406 through the connecting plate 404, the hydraulic cylinder 405 can drive the sleeve 406 to move through the connecting plate 404, a vertical plate 401 is arranged inside the sleeve 406, the vertical plate 401 is in clearance fit with the sleeve 405, the vertical plate 401 can move inside the sleeve 405, the inside of the lower end of the vertical plate 401 is rotatably connected with the plurality of supporting rods 403 through pin shafts, the vertical plate 401 can drive the plurality of supporting rods 403 to be rotatably connected, the upper side and the lower side of the hydraulic cylinder 402 are respectively communicated with an external hydraulic pipeline through oil ports 407, the hydraulic rod 405 can be controlled to stretch and retract by controlling the oil inlet sequence at the oil ports 407, the left hydraulic cylinder 402, the right hydraulic cylinder 402 and the connecting plate 404 are axially symmetrically distributed by taking the vertical center of the brake bottom plate 1 as a reference, and the included angles between the left supporting rod;
through the cooperation between pneumatic cylinder 402, hydraulic stem 405, link plate 404, sleeve 406, riser 401, branch 403 and brake drum 7, the controllable pneumatic cylinder 402 of detection command makes hydraulic stem 405 stretch out from the inside of pneumatic cylinder 402, makes hydraulic stem 405 can drive branch 403 and rotate, makes branch 403 can drive brake shoe 202 outwards to rotate and realize the brake, after the detection distance is safe, hydraulic stem 405 can retract, remove the inseparable laminating of brake shoe 202 and brake drum 7, compare prior art through hydraulic pressure laminating drive brake shoe 202, and need the spring to reset, avoided the braking equipment to reset and just can't be through the common control reset of hydraulic pressure and spring and lead to the easy impaired problem of long-term use spring through the spring control.
The adjusting components 3 are arranged inside and behind the sleeve 406, each adjusting component 3 comprises a bolt 301, a displacement sensor 302, a connecting rod 303, a worm wheel 304, a detection sliding block 305, a servo motor 306, a worm 307 and a rack 408, the servo motor 306 is fixedly connected to the center of the lower part inside the vertical plate 401, the model of the servo motor 306 is SGMAH-01AAA41, the upper end of the output shaft of the servo motor 305 is fixedly connected with the worm 307, the servo motor 305 can drive the worm 307 to rotate, the upper part of the outer wall of the worm 307 is rotatably connected with the vertical plate 401 through a bearing, the left side and the right side of the outer wall of the worm 307 are respectively meshed and connected with the worm wheel 304, the worm 307 can drive the worm wheel 304 to rotate, the front side and the rear side of the rotating shaft inside the worm wheel 304 are respectively rotatably connected with the vertical plate 401 through bearings, the racks 408 are respectively meshed outside the outer walls of the, a plurality of racks 408 are respectively machined in the centers of the inner walls of the left side and the right side of the sleeve 406, the displacement sensor 302 is positioned in the center above the front end of the brake base plate 1, the displacement sensor 302 can be used for detecting the position adjustment distance of a vertical plate 401, the upper side and the lower side of the left end and the right end of the displacement sensor 302 are fixedly connected with the brake base plate 1 through bolts 301, the displacement sensor 302 can be fixed at the brake base plate 1 through the bolts 301, a detection sliding block 305 is machined at the front end of the displacement sensor 302, the front end of the detection sliding block 305 is fixedly connected with the vertical plate 401 through a connecting rod 303, the connecting rod 303 is in clearance fit with the sleeve 406, the connecting rod 303 can move on the rear side of the sleeve 406, a sliding structure is formed between the detection sliding block 305 and the;
through the matching among the bolt 301, the displacement sensor 302, the worm wheel 304, the detection slide block 305, the servo motor 306, the worm 307, the brake shoe 202 and the vertical plate 401, the friction lining 205 on the outer wall can be continuously worn and thinned along with the brake of the brake shoe 202, at the moment, a user needs to rotate through the worm 307, so that the worm 307 can drive the worm wheel 304 to rotate, meanwhile, the vertical plate 401 can move upwards in the sleeve 406 due to the rotation of the worm wheel 304, the vertical plate 401 can drive the brake shoe 202 to move outwards for a certain distance in advance, the initial position adjustment of the brake shoe 202 is realized, and the problem that the brake capacity is insufficient easily caused after the position adjustment of the brake shoe is inconvenient to wear for a certain time in the prior art is;
the driving power of the worm 307 can be provided by the servo motor 306, so that the servo motor 306 can drive the worm 307 to rotate, the servo motor 306 has self-locking capability, and the worm wheel 304 and the worm 307 also have self-locking capability, so that the relative positions of the vertical plate 401 and the sleeve 406 can be fixed under the condition that the servo motor 306 is not started, and the problem that the whole braking equipment can be adjusted after being disassembled and cannot be directly adjusted through external control in the prior art is solved;
in the process of adjusting the position of the vertical plate 401, the vertical plate 401 can drive the detection slide block 305 on the displacement sensor 302 to move through the connecting rod 303, so that a certain distance and the starting and ending positions of the vertical plate 401 in the adjustment process can be conveyed to an external signal collection place through the displacement sensor 302, when the adjustment distance exceeds a preset limit, the fact that the friction lining 205 needs to be replaced can be proved, and the problem that the wear capacity of the friction lining 205 which is not intuitively displayed in the prior art causes the user to rely on the feeling control is avoided.
The brake assembly 2 is installed inside the brake drum 7, the brake assembly 2 comprises threaded holes 201, brake shoes 202, return springs 203, round rods 204 and friction linings 205, the brake shoes 202 are respectively located on the left side and the right side inside the brake drum 7, the round rods 204 are rotatably connected inside the lower portions of the brake shoes 202, the brake shoe 202 can be rotatably supported by the brake base plate 1 through the round rods 204, one end of each round rod 204 is fixedly connected with the brake base plate 1, the support rods 403 can drive the brake shoes 202 to move outwards, the friction linings 205 are fixedly connected to the outer sides of the outer walls of the brake shoes 202, the friction linings 205 can be driven to rotate by the brake shoes 202, the threaded holes 201 are machined in the outer walls of the friction linings 205 and the brake shoes 202, the positions of the threaded holes 201 are used for realizing the installation or the disassembly of the friction linings 205 and the brake shoes 202 through screws, the return springs 203 are arranged below the inner sides of the outer walls of the brake shoes 202, the elastic coefficients K of, two ends of a return spring 203 are movably connected with a brake shoe 202, the surface radians of the brake shoe 202 and the friction lining 205 correspond to each other, bases 6 are fixedly connected to the upper end and the lower end of the left side and the right side above the front end of a brake bottom plate 1, the inner walls of the bases 6 are fixedly connected with a hydraulic cylinder 402, the hydraulic cylinder 402 can be supported by the bases 6, and through holes 5 are processed in the centers of the inner walls of the brake bottom plate 1 and a brake drum 7;
through the cooperation among brake shoe 202, brake drum 7, reset spring 203, screw hole 201 and friction lining 205, brake shoe 202 outwards rotates and forms the close laminating state between brake drum 7, realizes the brake of automobile wheel and uses, and reset spring 203 can start the reset ability of brake shoe 202, and screw can realize the installation or dismantlement between brake shoe 202 and the friction lining 205 through the screw at screw hole 201 to satisfy the normal use demand of braking equipment.
When the wheel emergency braking device of the unmanned automobile is required to be used, firstly, a user can fix the brake bottom plate 1 with the automobile body, then the brake drum 7 is fixedly connected with an output shaft of the automobile, in the using process, the triggering mode is that the distance detection device at the front end of the unmanned automobile detects the distance, but the detection distance is dangerous to a certain degree, the detection command can control the hydraulic cylinder 402, the hydraulic rod 405 extends out of the hydraulic cylinder 402, the hydraulic rod 405 can drive the support rod 403 to rotate through the connecting plate 404, the sleeve 406 and the vertical plate 401, the support rod 403 can drive the brake shoe 202 to rotate outwards to be attached to the inner wall of the brake drum 7 to realize braking, after the detection distance is safe, the hydraulic rod 405 can retract to release the close attachment of the brake shoe 202 and the brake drum 7, compared with the prior art that the brake shoe 202 is driven through hydraulic attachment and the spring is required to reset, the problem that the spring is easily damaged after long-term use due to the fact that the reset of the brake equipment is controlled only by the spring and cannot be controlled by the hydraulic pressure and the spring together is solved, the sleeve 406 and the vertical plate 401 are in clearance fit transmission, the friction lining 205 on the outer wall can be continuously abraded and thinned along with the brake of the brake shoe 202, the original hydraulic drive cannot reach the extrusion distance or the state between the friction lining 205 and the brake drum 7 at the moment, a user needs to rotate through the worm 307, the worm 307 can drive the worm wheel 304 to rotate, meanwhile, the vertical plate 401 can move upwards in the sleeve 406 due to the rotation of the worm wheel 304, the vertical plate 401 can drive the brake shoe 202 to move outwards in advance for a distance through the supporting rod 403, the initial position adjustment of the brake shoe 202 is achieved, and the problem that the brake capacity is easily insufficient after the brake shoe is abraded for a, the driving power of the worm 307 can be provided by the servo motor 306, so that the servo motor 306 can drive the worm 307 to rotate, the servo motor 306 has self-locking capability, and the worm wheel 304 and the worm 307 also have self-locking capability, so that the relative positions of the vertical plate 401 and the sleeve 406 can be fixed under the condition that the servo motor 306 is not started, the problem that the prior art can not be directly adjusted by external control after the whole brake equipment is disassembled is solved, in the process of adjusting the position of the vertical plate 401, the vertical plate 401 can drive the detection slide block 305 on the displacement sensor 302 to move through the connecting rod 303, so that a certain distance and the starting and ending positions of the vertical plate 401 in the adjusting process can be transmitted to an external signal collecting position through the displacement sensor 302, and when the adjusting distance exceeds a preset limit, the friction lining 205 can be proved to be required to be replaced, the problem of the prior art that the lack of a visual indication of the wear capability of the friction lining 205 results in the need for sensory control by the user is avoided.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. Wheel emergency braking device of an unmanned vehicle, comprising a brake base plate (1) and a brake drum (7), the inner wall of the brake base plate (1) being rotatably connected with the brake drum (7), characterized in that: a driving component (4) is arranged in the center of the front side of the brake bottom plate (1); the driving assembly (4) comprises a vertical plate (401), a hydraulic cylinder (402), a supporting rod (403), a connecting plate (404), a hydraulic rod (405), a sleeve (406) and an oil port (407); a plurality of pneumatic cylinder (402) are located the front end top left and right sides of braking bottom plate (1) respectively, the inside of pneumatic cylinder (402) is provided with hydraulic stem (405), hydraulic stem (405) and pneumatic cylinder (402) laminate mutually, the outer wall of hydraulic stem (405) all links to each other with sleeve (406) is fixed through even board (404), the inside of sleeve (406) is provided with riser (401), riser (401) and sleeve (405) clearance fit, the lower extreme of riser (401) is inside to link to each other through round pin axle and a plurality of branch (403) are all rotated, the upper and lower both sides of pneumatic cylinder (402) all are linked together through hydraulic fluid port (407) and external hydraulic pressure pipeline.
2. The wheel emergency braking apparatus of an unmanned vehicle according to claim 1, wherein: the left hydraulic cylinder (402) and the right hydraulic cylinder (404) are distributed in an axisymmetric manner by taking the vertical center of the brake bottom plate (1) as a reference.
3. The wheel emergency braking apparatus of an unmanned vehicle according to claim 1, wherein: the left and right support rods (403) have the same included angle with the vertical direction.
4. The wheel emergency braking apparatus of an unmanned vehicle according to claim 1, wherein: the inner part and the rear side of the sleeve (406) are provided with an adjusting component (3); the adjusting assembly (3) comprises a bolt (301), a displacement sensor (302), a connecting rod (303), a worm wheel (304), a detection sliding block (305), a servo motor (306), a worm (307) and a rack (408); the servo motor (306) is fixedly connected to the center of the lower portion of the inside of a vertical plate (401), the upper end of an output shaft of the servo motor (305) is fixedly connected with a worm (307), the upper portion of the outer wall of the worm (307) is rotatably connected with the vertical plate (401) through a bearing, the left side and the right side of the outer wall of the worm (307) are respectively meshed with a worm wheel (304), the front side and the rear side of an internal rotating shaft of the worm wheel (304) are rotatably connected with the vertical plate (401) through bearings, the outer side of the outer wall of the worm wheel (304) is respectively meshed with a rack (408), the racks (408) are respectively processed at the centers of the inner walls of the left side and the right side of a sleeve (406), the displacement sensor (302) is located at the center of the upper portion of the front end of a brake bottom plate (1), the upper side and the lower side of the left side and the right side of the displacement sensor (302) are fixedly connected with the, the front end of the detection sliding block (305) is fixedly connected with a vertical plate (401) through a connecting rod (303), and the connecting rod (303) is in clearance fit with the sleeve (406).
5. The wheel emergency braking apparatus of an unmanned vehicle according to claim 4, wherein: a sliding structure is formed between the detection slide block (305) and the displacement sensor (302).
6. The wheel emergency braking apparatus of an unmanned vehicle according to claim 4, wherein: a one-way transmission self-locking structure is formed between the worm (307) and the worm wheel (304).
7. The wheel emergency braking apparatus of an unmanned vehicle according to claim 1, wherein: a brake assembly (2) is arranged in the brake drum (7); the brake assembly (2) comprises a threaded hole (201), a brake shoe (202), a return spring (203), a round rod (204) and a friction lining (205); the brake shoes (202) are respectively located on the left side and the right side of the interior of the brake drum (7), round rods (204) are connected to the interior of the lower portion of each brake shoe (202) in a rotating mode, one end of each round rod (204) is fixedly connected with the brake base plate (1), friction linings (205) are fixedly connected to the outer sides of the outer walls of the brake shoes (202), a plurality of threaded holes (201) are machined in the outer walls of the friction linings (205) and the brake shoes (202), a return spring (203) is arranged below the inner side of the outer wall of each brake shoe (202), and two ends of each return spring (203) are movably connected with the brake shoes (202).
8. The wheel emergency braking apparatus of an unmanned vehicle according to claim 7, wherein: the brake shoe (202) and the friction lining (205) have surface curvatures that correspond to each other.
9. The wheel emergency braking apparatus of an unmanned vehicle according to claim 1, wherein: the brake drum is characterized in that bases (6) are fixedly connected to the upper end and the lower end of the left side and the lower end of the upper portion of the front end of the brake bottom plate (1), the inner wall of each base (6) is fixedly connected with a hydraulic cylinder (402), and through holes (5) are machined in the centers of the inner walls of the brake bottom plate (1) and the brake drum (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110086234.2A CN112855800A (en) | 2021-01-22 | 2021-01-22 | Wheel emergency braking equipment of unmanned automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110086234.2A CN112855800A (en) | 2021-01-22 | 2021-01-22 | Wheel emergency braking equipment of unmanned automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112855800A true CN112855800A (en) | 2021-05-28 |
Family
ID=76007834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110086234.2A Withdrawn CN112855800A (en) | 2021-01-22 | 2021-01-22 | Wheel emergency braking equipment of unmanned automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112855800A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847364A (en) * | 2021-09-26 | 2021-12-28 | 启东育锋新材料科技有限公司 | Glass fiber part for automobile and preparation method |
| CN113969950A (en) * | 2021-10-15 | 2022-01-25 | 江苏金光电机科技有限公司 | Drum brake |
| CN115257723A (en) * | 2022-09-26 | 2022-11-01 | 江苏天一航空工业股份有限公司 | Cold-chain logistics vehicle automatic driving steering obstacle avoidance method and system |
| CN115360858A (en) * | 2022-10-21 | 2022-11-18 | 四川富生汽车零部件有限公司 | Direct-current brush motor of inflating pump of automobile air suspension |
-
2021
- 2021-01-22 CN CN202110086234.2A patent/CN112855800A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847364A (en) * | 2021-09-26 | 2021-12-28 | 启东育锋新材料科技有限公司 | Glass fiber part for automobile and preparation method |
| CN113969950A (en) * | 2021-10-15 | 2022-01-25 | 江苏金光电机科技有限公司 | Drum brake |
| CN115257723A (en) * | 2022-09-26 | 2022-11-01 | 江苏天一航空工业股份有限公司 | Cold-chain logistics vehicle automatic driving steering obstacle avoidance method and system |
| CN115360858A (en) * | 2022-10-21 | 2022-11-18 | 四川富生汽车零部件有限公司 | Direct-current brush motor of inflating pump of automobile air suspension |
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Application publication date: 20210528 |