Fixed disc type brake capable of preventing brake disc from excessive shaking
Technical Field
The invention relates to the field of fixed disc brakes, in particular to a fixed disc brake capable of preventing a brake disc from excessively shaking.
Background
The fixed disc brake is a kind of car braking device, it is mainly made up of part such as brake disc, brake caliper, brake block and brake liquid pipeline, etc., the brake disc is a metal disc fixed on wheel hub, the brake caliper is fixed on suspension system or axle of the vehicle, when the driver steps on the brake pedal, make the piston in the brake caliper push the brake block to clamp the brake disc, utilize friction between brake block and brake disc, make the rotational velocity of the wheel reduce, thus realize the braking of the vehicle.
The traditional fixed disc brake mainly relies on heat conduction of a brake disc and natural convection of surrounding air to dissipate heat, when a vehicle is braked for a long time or under high strength, such as a long-time downhill running or frequent sudden braking, heat generated by the brake disc cannot be timely dissipated, the temperature of the brake disc is rapidly increased, a heat fading phenomenon is easy to occur, friction coefficient between the brake disc and the brake disc is reduced due to the degradation, the braking distance of the vehicle is greatly increased, the vehicle cannot be stopped in time in an emergency, driving safety is seriously threatened, and secondly, the high temperature generated by long-time braking seriously damages the material properties of the brake disc and the brake disc, so that the contact between the brake disc and the brake disc is uneven, and a large amount of high-temperature sparks are generated when the friction between the brake disc and the brake disc is severe, and the sparks can cause combustion of surrounding parts, such as rubber pipelines, sound insulation materials and the like near a braking system.
In addition, the traditional brake has no automatic recovery capability after the brake performance of the brake disc is reduced due to high temperature, and can only rely on natural cooling to slowly release the heat of the brake disc to the surrounding environment, so that the process needs a longer time, the same problem can not occur again when the brake disc is braked next time due to no corresponding circulation mechanism, and other risks such as sliding, rear-end collision of a rear-end vehicle and the like are increased because the vehicle is in an unsafe temporary parking state in the process of waiting for cooling.
Secondly, the traditional braking system is easy to generate the condition that the brake pad is in uneven contact with the brake disc due to the fact that a piston is designed or a braking structure is adopted, for example, certain traditional brakes only have one piston, all parts cannot be guaranteed to be in even contact with the brake disc at the same time during braking, the uneven contact can lead to unbalanced stress of the brake disc in the braking process, local pressure is overlarge, further the braking effect is poor, the traditional brake pad is usually in a plane structure, heat generated in the braking process can only be conducted to the brake disc through a limited contact surface, and the heat dissipation capacity of the brake disc and natural convection dissipation of surrounding air are further relied on.
The conventional fixed disc brake often has only a single braking mode, namely, the braking is realized through clamping of a brake caliper to a brake disc, and in some emergency or special cases, the single braking mode cannot meet higher requirements on braking effect, for example, when emergency braking under high-speed running or when a vehicle is in heavy load, the braking capability of the conventional fixed disc brake is limited, when the conventional fixed disc brake encounters the condition of insufficient braking force of the brake caliper, no corresponding supplementary braking measures exist, the braking distance is overlong easily, and the possibility of accident occurrence is increased.
Accordingly, there is a need to provide a fixed disc brake that prevents excessive wobble of the brake disc, which aims to solve the above-mentioned problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a fixed disc brake capable of preventing a brake disc from being excessively dithered.
In order to achieve the purpose, the fixed disc brake capable of preventing excessive vibration of the brake disc comprises a brake caliper group and the brake disc, wherein the brake disc is arranged in the brake caliper group, a cooling component for cooling the brake disc at high temperature is arranged in the brake caliper group, an anti-vibration component for preventing excessive vibration of the brake disc during braking of the brake disc is arranged in the brake caliper group, and an emergency brake component for emergency braking of the brake disc is arranged in the brake disc.
Preferably, the cooling component comprises a circular truncated cone-shaped groove, the circular truncated cone-shaped groove is formed in the brake caliper group, positioning clamps are symmetrically and fixedly connected to the inner part of the circular truncated cone-shaped groove, and one end, away from the circular truncated cone-shaped groove, of each positioning clamp is connected with a fixing frame in a clamping mode.
Preferably, the cooling assembly further comprises a memory metal block, the memory metal block is fixedly connected to one end of the fixing frame, the other end of the memory metal block is clamped with a cooling tank, and a sealing tube is arranged between the memory metal block and the cooling tank.
Preferably, the anti-shake assembly comprises a hydraulic tank group, the hydraulic tank group is fixedly connected to two sides of the brake caliper group, three piston rods are connected to the inside of the hydraulic tank group in a sliding mode, an induction coil is arranged at one end, close to the brake caliper group, of the hydraulic tank group, and a brake pad is fixedly connected to one end, far away from the hydraulic tank group, of the piston rods.
Preferably, the emergency braking assembly comprises a connecting disc, the connecting disc is fixedly connected to the inner side of the braking disc through a metal rod, a limiting nail is fixedly connected to the inner side of the connecting disc, and a first elastic braking piece is slidably connected to the outer wall of the limiting nail.
Preferably, the emergency braking assembly further comprises a metal sheet, the metal sheet is fixedly connected to the inside of the first elastic braking sheet, the outer wall of the limiting nail is slidably connected with a second elastic braking sheet, and an electromagnet block is arranged on one side, close to the first elastic braking sheet, of the second elastic braking sheet.
Preferably, the round table-shaped groove is formed in the outer side of the brake disc, a coolant is arranged in the cooling tank, and the inside of the cooling tank is in a negative pressure state.
Preferably, one side of the brake pad, which is far away from the piston rod, is provided in a wavy shape.
Preferably, the three piston rods are sequentially arranged to be small, medium and large in size, and the electromagnet blocks and the metal sheets are sleeved on the outer sides of the limit nails.
Preferably, the piston rod and the equipment use power supply are in electrical connection, and the electromagnet block and the induction coil are in electrical connection.
Compared with the prior art, the fixed disc brake capable of preventing the brake disc from excessive shaking has the advantages that 1, through the arrangement of the cooling component, when the brake disc is braked for a long time by the brake disc, the brake disc can gradually heat up, high-temperature sparks can be generated by the brake disc when the brake disc is severe, the memory metal block can deform due to the sparks which are heated up at the moment, then the memory metal block stops abutting against the sealing tube, and the cooling tank which is in contact with the sealing tube is damaged, so that the cooling agent can be quickly sprayed to the surface of the brake disc due to negative pressure in the cooling tank, the brake disc can be quickly cooled down, and compared with the traditional fixed disc brake, the brake with the active cooling system can effectively prevent brake failure, ensure that the vehicle can be braked safely under any conditions, such as emergency brake or long-time continuous brake, and provide reliable brake performance for a driver.
Secondly, the memory metal block can produce shape change according to temperature and external stimulus, it is as a temperature sensitive trigger component, respond to the high temperature of brake disc with accuracy, compare traditional fixed disk brake and rely on natural heat dissipation or simple ventilation heat dissipation alone, this kind of cooling mode of initiative trigger can more in time deal with the overheated condition of brake disc, traditional brake is after the braking leads to overheated, braking force can descend because of heat decay, and this design can effectively avoid this kind of condition, keep the stability of braking performance, and cooling tank and sealed tube's design makes the coolant spray to the brake disc surface fast when needs, the negative pressure design inside the cooling tank can ensure that the coolant sprays fast and evenly, reach the effect of quick reduction brake disc temperature, resume its braking performance.
And secondly, the spraying of the coolant can not only reduce the temperature of the brake disc, but also reduce fire caused by spark splashing, and simultaneously the coolant can be vaporized when contacting the high-temperature brake disc to form a layer of steam protection film to prevent oxygen from contacting the high-temperature metal surface, so that the generation of spark is reduced, and the risk of fire is reduced.
Finally, make the quick surface of spraying to the brake disc of coolant because of inside negative pressure at the cooling jar for after the brake disc drops temperature fast, can change cooling jar and sealed tube, and memory metal piece can be along with the brake disc cooling after, and then be convenient for follow-up cooling to the brake disc again, reach circulated purpose, make whole cooling system possess cyclic utilization's function, in case the braking performance decline appears because of the high temperature, have the scheduling problem of automatic recovery mechanism, need wait long time natural cooling or parking cooling, influence the continuous use and the security of vehicle, form sharp contrast with traditional fixed disk type stopper.
2. Through the setting of anti-shake subassembly, reached when the brake caliper group during operation, because the three piston size is different, the thrust that produces under the same hydraulic pressure is also different, the thrust that the little piston produced is less relatively, and the thrust that the big piston produced is great relatively, compare with traditional braking system, this kind of design makes the contact in-process of brake block and brake disc, braking moment can be by little to the great linear change, because they promote a brake block jointly, can let the contact of brake block and brake disc more steady and progressively increase pressure, thereby realize more linear braking process.
Secondly, the traditional braking system can lead to the brake block to be in uneven contact with the brake disc, for example, only one large piston is firstly contacted and applies larger force, so that the local stress of the brake block is overlarge, the brake disc is further caused to shake in the braking process, one brake block is pushed simultaneously through three pistons, and the brake block can be more uniformly attached to the brake disc due to the linear change of the braking moment caused by the size difference of the three pistons, stable contact is kept in the whole braking process, and the shake of the brake disc is effectively avoided.
Secondly, the shape of the brake pad is set to be special wavy, compared with a traditional plane brake pad, the brake pad is not a simple plane, but has more undulation, the contact area between the brake pad and the brake disc is greatly increased by the wavy structure, the area of the wavy surface is larger than that of the plane with the same size from the geometric perspective, heat can be conducted on a larger area in the braking process, for example, when a vehicle brakes, heat generated by braking can be emitted to ambient air through the contact surface of the brake pad and the brake disc, the wavy structure can provide better engagement effect in the initial braking stage, and when the brake pad and the brake disc start to contact, wavy convex parts firstly contact the brake disc, and the convex parts can rapidly cut into tiny irregularities on the surface of the brake disc to generate larger friction force.
Meanwhile, the wavy brake pad can promote convection of air in the braking process, the air can flow between the wavy grooves and the protrusions to take away heat, the structure can enhance the fluidity of the air just like fins of a radiator, the air flow of the traditional plane brake pad is relatively stable in the braking process, the natural convection is mainly relied on for heat dissipation, and the wavy brake pad can guide the air to form a complex convection path on the surface of the wavy brake pad, so that the heat dissipation efficiency is improved.
3. Through emergency braking subassembly's setting, reached when the brake caliper group plays maximum braking effect, hydraulic pressure tank group can extrude the piston rod and contradict the induction coil, the induction coil makes the electromagnetism lead to the electromagnetism and inhale the metal sheet afterwards, make first elastic brake block and the inconsistent with second elastic brake block finally, and then make the outside of first elastic brake block and second elastic brake block conflict the joint dish simultaneously, and then make the rotational speed of brake disc descend through the joint dish, reach extra braking effect, compare with traditional stopper, after the brake caliper group reaches maximum braking effect, still there is subsequent braking mechanism, and this kind of multistage braking structure can handle extreme braking condition better, when the brake caliper group braking effect is not enough, extra braking mechanism can in time intervene, the rotational speed of brake disc is reduced more effectively.
Drawings
FIG. 1 is a schematic diagram of the overall device position relationship according to the present invention.
Fig. 2 is a cross-sectional view of the overall device of the present invention.
Fig. 3 is an enlarged view of the structure of fig. 2 a according to the present invention.
FIG. 4 is an exploded view of the holder, memory block, cooling tank, and sealing tube of the present invention.
FIG. 5 is a schematic view of the relationship between the positions of the brake caliper assembly, the locating clip and the anti-shake assembly according to the present invention.
FIG. 6 is a schematic view showing the positional relationship between a brake pad and a piston rod according to the present invention.
Fig. 7 is a schematic diagram of the relationship between the brake caliper set and the anti-shake assembly according to the present invention.
Fig. 8 is an enlarged view of the structure of fig. 7B in accordance with the present invention.
Fig. 9 is a schematic diagram of the positional relationship between a brake disc and an emergency brake assembly according to the present invention.
FIG. 10 is a schematic view of the positional relationship of the adapter plate, the first resilient brake pad, and the second resilient brake pad of the present invention.
FIG. 11 is a schematic view showing the positional relationship between an electromagnet block and a metal sheet according to the present invention.
Reference numeral 11, brake caliper group 12, brake disc.
The cooling component comprises 21 parts of a truncated cone-shaped groove, 22 parts of a locating clamp, 23 parts of a fixing frame, 24 parts of a memory metal block, 25 parts of a cooling tank, 26 parts of a sealing tube.
The anti-shake assembly comprises 31, a hydraulic tank set, 32, a brake pad, 33, a piston rod, 34 and an induction coil.
The emergency braking assembly comprises 41, a connecting disc, 42, limit nails, 43, a first elastic braking piece, 44, a second elastic braking piece, 45, an electromagnet block and 46, and a metal sheet.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and examples, it being understood that the specific examples described herein are for illustration only and are not intended to limit the present invention.
In the description of the present invention, the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
An embodiment of the present invention is shown in fig. 1 to 11, and is a fixed disc brake capable of preventing excessive vibration of a brake disc, which comprises a brake caliper set 11 and a brake disc 12, wherein the brake disc 12 is arranged in the brake caliper set 11, a cooling component for cooling the brake disc 12 with high temperature is arranged in the brake caliper set 11, an anti-vibration component for preventing excessive vibration of the brake disc 12 during braking of the brake disc 12 is arranged in the brake caliper set 11, and an emergency brake component for emergency braking the brake disc 12 is arranged in the brake disc 12.
The cooling component comprises a circular truncated cone-shaped groove 21, the circular truncated cone-shaped groove 21 is formed in the brake caliper group 11, positioning clamps 22 are symmetrically and fixedly connected in the circular truncated cone-shaped groove 21, and one ends, far away from the circular truncated cone-shaped groove 21, of the two positioning clamps 22 are clamped with a fixing frame 23.
The cooling assembly further comprises a memory metal block 24, the memory metal block 24 is fixedly connected to one end of the fixing frame 23, the other end of the memory metal block 24 is clamped with a cooling tank 25, and a sealing tube 26 is arranged between the memory metal block 24 and the cooling tank 25.
The anti-shake subassembly is including hydraulic tank group 31, and hydraulic tank group 31 fixed connection is in the both sides of brake caliper group 11, and the inside sliding connection of hydraulic tank group 31 has three piston rod 33, and the one end that hydraulic tank group 31 is close to brake caliper group 11 is provided with the induction coil 34, and the one end fixedly connected with brake block 32 of hydraulic tank group 31 is kept away from to piston rod 33.
The emergency braking assembly comprises a connecting disc 41, the connecting disc 41 is fixedly connected to the inner side of the braking disc 12 through a metal rod, a limiting nail 42 is fixedly connected to the inner side of the connecting disc 41, and a first elastic braking piece 43 is slidably connected to the outer wall of the limiting nail 42.
The emergency brake assembly further comprises a metal sheet 46, the metal sheet 46 is fixedly connected to the inside of the first elastic brake sheet 43, the outer wall of the limit nail 42 is slidably connected with a second elastic brake sheet 44, and an electromagnet block 45 is arranged on one side, close to the first elastic brake sheet 43, of the second elastic brake sheet 44.
The round table-shaped groove 21 is formed in the outer side of the brake disc 12, the cooling tank 25 is internally provided with coolant, and the cooling tank 25 is in a negative pressure state, so that the cooling tank 25 is triggered to spray and cool the brake disc 12.
The side of the brake pad 32 away from the piston rod 33 is provided in a wave shape for improving the braking effect and the heat dissipation effect of the brake pad 32.
The electromagnet block 45 and the metal sheet 46 are sleeved on the outer side of the limit nail 42, so that the limit nail 42 can avoid affecting the magnetic attraction effect of the electromagnet block 45 and the metal sheet 46.
The three piston rods 33 are sequentially arranged in a small, medium and large size, so that the braking moment generated by the brake pad 32 is linearly changed from small to large, the piston rods 33 and the equipment power supply are in electrical connection, the electromagnet blocks 45 and the induction coil 34 are in electrical connection, and when the piston rods 33 are in contact with the induction coil 34, the electromagnet blocks 45 are electrified to attract the metal sheets 46.
In the initial state, the two ends of the sealing tube 26 are respectively abutted against the memory metal block 24 and the cooling tank 25, the brake pad 32 is not abutted against the brake disc 12, the piston rod 33 is not abutted against the induction coil 34, the first elastic brake pad 43 is abutted against the top of the limit nail 42, and the electromagnet block 45 is not magnetically attracted to the metal sheet 46.
During operation, when the brake caliper group 11 is used to brake the brake disc 12, hydraulic oil is injected into the hydraulic tank group 31 by the brake caliper group 11, so that the hydraulic oil collides with the piston rod 33 to slide along the interior of the hydraulic tank group 31, and then the brake disc 12 is braked by pushing the brake pads 32 by the piston rods 33 with three different sizes because the sizes of the three piston rods 33 are sequentially arranged to be small, medium and large.
In this process, since the three piston rods 33 are different in size, the thrust generated under the same hydraulic pressure is also different, the thrust generated by the small piston is relatively smaller, the thrust generated by the large piston is relatively larger, and further, the braking moment can be linearly changed from small to large, because the three piston rods 33 push one brake pad 32 together, the contact between the brake pad 32 and the brake disc 12 can be increased more smoothly and progressively, a more linear braking process is realized, the brake pad 32 can be attached to the brake disc 12 more uniformly, stable contact is maintained in the whole braking process, and excessive shaking of the brake disc 12 is effectively avoided.
Secondly, because the brake block 32 is kept away from one side of piston rod 33 and sets up to the wave, and then when the wave surface of brake block 32 contradicts brake disc 12, this kind of wave structure has greatly increased the area of contact between brake block 32 and the brake disc 12, and then the heat can conduct on the bigger area, make the heat that the braking produced can distribute to the surrounding air through the surface that brake block 32 contacted with brake disc 12, simultaneously, wave brake block 32 can also promote the convection current of air in the braking process, just like the fin of radiator, this kind of structure can strengthen the mobility of air, make the air can flow between the wave recess and the arch of brake block 32, take away the heat.
In addition, the wavy structure provides a better engagement effect at the initial stage of braking, and when the brake pad 32 comes into contact with the brake disc 12, wavy convex portions of the brake pad 32 first contact the brake disc 12, and these convex portions can rapidly cut into minute irregularities on the surface of the brake disc 12, resulting in a larger friction force.
When emergency braking at high speed or when a vehicle is in heavy load, the braking capability of the conventional brake is limited, when the conventional fixed disc brake encounters a condition that the braking force of the brake caliper is insufficient, the conventional fixed disc brake is easy to cause an overlong braking distance and easy to cause accidents, and when the brake caliper 11 is used for braking the brake disc 12 by using the maximum braking force, the brake caliper 11 injects hydraulic oil into the hydraulic tank 31, so that the hydraulic oil collides with the piston rod 33 and moves to the bottom of the hydraulic tank 31.
Because the piston rod 33 and the power source used by the device have an electrical connection relationship, and the electromagnet block 45 and the induction coil 34 have an electrical connection relationship, then the piston rod 33 and the induction coil 34 are in contact, the induction coil 34 can synchronously energize the electromagnet block 45, and the energized electromagnet block 45 can quickly magnetically attract the metal sheet 46, so that the metal sheet 46 drives the first elastic brake sheet 43 to quickly slide towards the second elastic brake sheet 44.
When the electromagnet block 45 is abutted against the magnetically attracted metal sheet 46, the first elastic brake piece 43 is abutted against the second elastic brake piece 44 synchronously, and after the first elastic brake piece 43 is abutted against the second elastic brake piece 44, the diameters of the first elastic brake piece 43 and the second elastic brake piece are gradually increased, and finally the outer walls of the first elastic brake piece 43 and the second elastic brake piece 44 are abutted against the inner wall of the connecting disc 41, so that the first elastic brake piece 43 and the second elastic brake piece 44 simultaneously rub against the connecting disc 41, and the rotating speed of the brake disc 12 is reduced through the connecting disc 41, and the effect of re-braking the brake disc 12 is achieved.
When the brake caliper group 11 normally brakes the brake disc 12, the first elastic brake pad 43, the second elastic brake pad 44, the electromagnet block 45 and the metal sheet 46 do not affect the normal braking effect of the brake caliper group 11.
Meanwhile, when the brake caliper group 11 is required to exert the maximum braking effect, an additional braking effect can be achieved, and compared with a traditional brake, a subsequent braking mechanism is also arranged after the brake caliper group 11 reaches the maximum braking effect, and the multistage braking structure can better cope with extreme braking conditions, and when the brake caliper group 11 is insufficient in braking effect, the additional braking mechanism can be intervened in time, so that the rotating speed of the brake disc 12 is reduced more effectively.
When the vehicle runs downhill for a long time or brakes suddenly frequently, heat generated by the brake caliper group 11 braking the brake disc 12 cannot be timely emitted, the temperature of the brake disc 12 can be rapidly increased, a large amount of high-temperature sparks can be generated by friction between the brake pad 32 and the brake disc 12 in severe cases, and in the process, the high-temperature brake disc 12 and the splashed high-temperature sparks trigger the memory metal block 24 to deform.
The memory metal block 24 that takes place the deformation later can't conflict seal tube 26, can't continue to carry out sealed work to cooling tank 25 after the conflict of this moment seal tube 26 one end loss memory metal block 24, because of the inside of cooling tank 25 is provided with the coolant, and the inside of cooling tank 25 is negative pressure state, the inside coolant of cooling tank 25 of the sealed state of contact later can spray to the surface of high temperature brake disc 12 along mount 23 for brake disc 12 drops the temperature fast, has reached under extreme braking circumstances, like emergency braking or long-time continuous braking, and brake caliper group 11 also can provide reliable braking performance for the driver.
Secondly, the memory metal block 24 can generate shape change according to temperature and external stimulus, and is used as a temperature-sensitive trigger element to accurately respond to high temperature and spark of the brake disc 12, compared with the traditional fixed disc brake which simply relies on natural heat dissipation or simple ventilation heat dissipation, the actively triggered cooling mode can more timely cope with overheat condition of the brake disc 12, thereby achieving the effects of rapidly taking away heat, reducing the temperature of the brake disc 12 and recovering the braking performance.
Secondly, the coolant of the cooling tank 25 not only can reduce the temperature of the brake disc 12, but also can reduce fire caused by spark splashing, and simultaneously the coolant can be vaporized when contacting the high-temperature brake disc 12 to form a steam protection film to prevent oxygen from contacting the high-temperature metal surface, thereby reducing the generation of sparks and reducing the risk of fire.
Finally, the cooling tank 25 is refilled with new coolant, and the new sealing tube 26 is replenished, and the memory metal block 24 restores the original shape after being cooled along with the brake disc 12, so that the subsequent cooling of the high-temperature brake disc 12 again is facilitated, and meanwhile, the purpose of recycling is achieved, so that the whole cooling system has the function of recycling, and the novel cooling system is in sharp contrast with the traditional fixed disc brake.
It will be apparent to those skilled in the art that although several embodiments and examples of the present invention have been described, these embodiments and examples are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other modes, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and their equivalents.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.