CN210680409U - Brake device special for formula electric racing car for college students - Google Patents

Abstract

The utility model discloses a special arresting gear of university student's equation electric racing car, including conventional brake mechanism and braking energy recovery mechanism, the opening and closing of braking energy recovery mechanism relies on the acceleration when the brake pedal steps on to control, when the racing driver steps on the brake pedal promptly, meshbelt blocks in the coiler to make the take-up pulley compress tightly the belt, the belt transmits the energy of engine or derailleur output shaft to the generator and carries out energy recovery, when the brake pedal steps on slowly, the coiler does not lock, the generator is out of work; whether the braking energy recovery mechanism is opened is judged automatically by the mechanical structure of the retractor, a sensor and an electric control system do not need to be additionally arranged, the safety is high, the use is convenient, the motor and the retractor can be directly transformed on the existing racing car, parts such as a generator and the retractor can be directly purchased and installed, the structure is simple, the cost is low, and the braking energy recovery mechanism is very suitable for formula racing cars of college students.

Description

Brake device special for formula electric racing car for college students

Technical Field

The utility model relates to an university student's equation motorcycle race field, concretely relates to special arresting gear of electronic motorcycle race of university student's equation.

Background

The existing formula car racing for college students is divided into three groups, namely a fuel car group, an electric car group and an unmanned car group, wherein when the electric car group racing car participates in a racing car, as a power system uses a motor and a battery system, in order to save energy consumption as much as possible in the racing car, a braking energy recovery system needs to be designed, namely, redundant kinetic energy of the racing car is converted into electric energy to be stored on a battery for reutilization when the racing car brakes, so as to improve the driving mileage of the racing car, but the control mode of the existing braking energy recovery system is an electric control mode and comprises a generator and a plurality of sensors, wherein the generator starts to generate electricity and consumes the energy on a half shaft of the car after the sensors judge that the speed of the car is reduced or a driver steps on the brake, and the intervention time and the braking force of the generator of the existing formula car braking energy recovery system are adapted to various road conditions by a single chip microcomputer or a microprocessor according to, Parameters such as pedal braking force, vehicle weight and the like are obtained through comprehensive calculation, and the magnitude of the recovered braking force can be adjusted according to different conditions, so that the data acquisition process in the control system is very complex, and a manufacturer often needs to perform long-time data acquisition, calibration and the like to match the braking energy recovery system with a conventional braking device; and when the existing braking energy recovery system works, the braking energy recovery system is dependent on an electric control system, and once the electric control system has a problem, the braking energy recovery system can not be used generally.

The formula electric racing car for college students only runs on a racing track, the racing track is fixed, the running condition is simpler, compared with a mass production car, the racing car has low manufacturing cost and small quantity, and an electric control system can not be used for judging when a braking energy recovery system intervenes like the mass production car, so that the structure of most of the current racing cars is that a braking pedal is connected with a clutch through a pull rope, the clutch connects an engine and a rotating shaft of a generator, when the braking pedal is stepped down, the clutch is closed, the engine drives the generator to generate electricity, the braking energy recovery is realized, but in actual use, the fact that a racing car driver lightly brakes or slowly steps down the brake is generally to control the racing car to slow down or slide, the generator is not expected to intervene, if the generator intervenes, the racing car slows down too much, the speed needs to be increased again, and the running speed of the racing car is influenced, when a user steps on the brake deeply or suddenly, the generator is hoped to intervene to recover part of the braking energy, but the conventional brake pedal-clutch structure ensures that the generator in the braking energy recovery device intervenes immediately as long as the user steps on the brake, so that the function cannot be realized.

Disclosure of Invention

An object of the utility model is to provide a special arresting gear of electronic cycle racing of university student's equation to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the brake device special for the formula electric racing car for the college students comprises a brake mechanism and a brake energy recovery mechanism, wherein the brake mechanism is installed on the electric racing car and is an existing hydraulic disc brake mechanism or an existing electric drive disc brake mechanism of the racing car;

the braking energy recovery mechanism comprises a connecting rod welded at the front end of the braking pedal, the connecting rod is perpendicular to the length direction of the braking pedal, one end of a first steel wire rope penetrates through a through hole formed in one end, close to the outer side of the racing car, of the connecting rod, the other end of the first steel wire rope is tightly tied and connected with one end of an inserting buckle, an inserting groove of the inserting buckle is matched with a tongue piece of an inserting plate, the inserting plate is tightly tied and connected with one end of a braid, the other end of the braid penetrates through a retractor, a shell of the retractor is connected with one end of a second steel wire rope through the inserting buckle/inserting plate or tightly tied, the shell of the retractor is connected with a first sliding block through a buckle or a bolt, the first sliding block slides along a second horizontal guide rail, the second horizontal guide rail is installed at the corresponding position; one end face of the first sliding block is connected with one end of a first return spring in a welding or buckling mode, and the other end of the first return spring is connected with a steel pipe of a racing car frame in a welding or buckling mode;

the other end of the second steel wire rope is tightly bound with one end of the first swing rod or is connected with one end of the first swing rod through a hanging ring and a lifting hook, the middle part of the first swing rod is connected with a racing car frame in a hinge mode, the other end of the first swing rod is hinged with one end of the second swing rod, the other end of the second swing rod is hinged with the bottom of a fork rod body of a shifting fork, a shifting fork ring at the end part of a fork rod of the shifting fork is sleeved in an annular groove formed in the outer side surface of the second sliding block, the second sliding block is matched with a horizontal guide rail arranged on a steel pipe of the racing car; the shifting fork slides along the horizontal guide rail; a circular hole is formed in the side face of one side of the second sliding block, a rotating shaft of the tension pulley is inserted into the circular hole, the tension pulley is tightly attached to the outer side face of the belt, one end of the belt is sleeved on the rotating shaft, and the other end of the belt is sleeved on an engine output shaft or a transmission output shaft; the outer side face of one end of the first swing rod is connected with one end of a second return spring in a welded or buckled mode, and the other end of the second return spring is connected with one end face of a second sliding block in a welded or buckled mode;

the rotary shaft is positioned above the engine or the transmission, needle roller bearings are sleeved at two ends of the rotary shaft and are installed in a cylindrical bearing support, a square support lug with a through hole is sleeved or welded at one end of the bearing support far away from the center of the rotary shaft, and the support lug is connected with the square support with a threaded hole welded at the corresponding position on the racing car frame through a bolt; the generator is sleeved outside the center of the rotating shaft, a base flange of the generator is connected with a square support which is welded at a corresponding position on a racing car frame and is provided with a threaded hole, and a rubber sleeve is wrapped outside a connecting bolt between the generator and the frame.

Preferably, the structure of the eye-splice and the inserting plate is consistent with that of the eye-splice and the inserting plate for the automobile safety belt, and the structure of the woven belt is consistent with that of the woven belt for the automobile safety belt; the structure of the retractor is consistent with that of an acceleration sensitive retractor pulled out from a mesh belt for an automobile safety belt.

Preferably, the length of the webbing that can extend out of the retractor is defined as a first length, the length of the webbing that can extend out when the webbing is not caught by the retractor after the brake pedal is stepped on to the bottom is defined as a second length, and the first length is smaller than the second length.

Compared with the prior art, the beneficial effects of the utility model are that: when a racing driver suddenly steps on a brake pedal, a braid in the retractor is clamped, the tension pulley is enabled to tightly press the belt, the belt transmits the energy of an engine or an output shaft of a transmission to the generator for energy recovery, when the brake pedal is slowly stepped on, the retractor is not locked, and the generator does not work; whether the braking energy recovery mechanism is opened is judged automatically by the mechanical structure of the retractor, a sensor and an electric control system do not need to be additionally arranged, the safety is high, the use is convenient, the motor and the retractor can be directly transformed on the existing racing car, parts such as a generator and the retractor can be directly purchased and installed, the structure is simple, the cost is low, and the braking energy recovery mechanism is very suitable for formula racing cars of college students.

Drawings

FIG. 1 is a schematic view of a university student equation electric racing car owner;

FIG. 2 is an enlarged view of a portion of the braking energy recovery mechanism of FIG. 1;

FIG. 3 is a left side view of the braking energy recovery mechanism shown in FIG. 1

FIG. 4 is a schematic top view of the first cable disposed within the racing car cabin;

fig. 5 is a schematic diagram of a retractor structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in the embodiment of the present invention, the brake device dedicated for the formula electric racing car for college students includes a brake mechanism and a brake energy recovery mechanism already installed on the electric racing car, and the brake mechanism of the racing car is a hydraulic disc brake device or an electric disc brake device designated for the FSAE event of the formula electric racing car for college students;

when the braking mechanism is a hydraulic disc type braking mechanism, the braking mechanism comprises a hydraulic pump and a hydraulic pipeline which are arranged on an output shaft of a motor for driving the racing car, a braking bracket, a hydraulic braking caliper and a braking friction plate which is arranged in the middle of the hydraulic braking caliper and a braking disc which is arranged on a wheel hub, wherein the braking bracket, the hydraulic braking caliper and the braking friction plate are arranged on a frame; when the brake mechanism is an electric drive disc type brake mechanism, the brake mechanism comprises an electric push rod arranged at a corresponding position on a racing car frame, a brake friction plate is arranged at the rod end of the electric push rod, and the brake friction plate is contacted with a brake disc arranged on a wheel hub; an engine of the racing car is transversely arranged in the middle of the car frame, an output shaft of the engine is connected with an input shaft of a transmission through a chain or a belt, a differential is arranged on the output shaft of the transmission and connected with a half shaft, the half shaft is connected with a hub of a driving wheel, and the differential and the half shaft jointly form a driving axle;

the braking energy recovery mechanism comprises a connecting rod 11 welded at the front end of a braking pedal 14, the connecting rod 11 is vertically arranged relative to the length direction of the braking pedal 14, one end of a first steel wire rope 12 penetrates into a through hole formed in one end of the connecting rod 11, which is close to the outer side of the racing car, the other end of the first steel wire rope 12 is tightly tied and connected with one end of an inserting buckle 21, an inserting groove of the inserting buckle 21 is matched with a tongue piece of an inserting plate 22, the inserting plate 22 is tightly tied and connected with one end of a woven belt 23, the other end of the woven belt 23 penetrates into a retractor 24, and a shell of the retractor 24 is connected or tightly tied and connected with one end of; the housing of the retractor 24 is also in snap connection or bolt connection with the first sliding block 41, the first sliding block 41 slides along the second horizontal guide rail 42, the second horizontal guide rail 42 is installed at the corresponding position of the racing car frame through bolts or welding, and the second horizontal guide rail 42 is arranged along the longitudinal direction of the racing car; one end face of the first sliding block 41 is welded or buckled with one end of the first return spring 43, and the other end of the first return spring 43 is welded or buckled with a steel pipe of a racing car frame;

the structures of the eye-splice 21 and the plugboard 22 are consistent with those of an eye-splice and a plugboard for an automobile safety belt, and the structure of the woven belt 23 is consistent with that of a woven belt for the automobile safety belt; the structure of the retractor 24 is the same as that of an acceleration sensitive retractor for pulling out a mesh belt of an automobile safety belt, the basic structure of the acceleration sensitive retractor for pulling out the mesh belt is shown in figure 5, the mesh belt 23 is wound on a winding drum, a ratchet wheel 92 is arranged on the outer side of one end of the winding drum, when the mesh belt 23 is pulled out, the ratchet wheel 92 and the winding drum rotate together, when the mesh belt 23 is pulled out normally, the centrifugal force applied to a swing rod 91 arranged in a retractor shell is small, the spring elastic force cannot be overcome, therefore, the swing rod does not swing, when the mesh belt is pulled out at a high speed, the swing rod 91 is acted by the centrifugal force to swing, the end part pushes a boss 93 arranged in the retractor shell to move, a sliding pin 94 arranged on the boss 93 is inserted into a sliding groove arranged on a sliding plate 95 with a pawl, the sliding pin 94 of the boss 93, the braid 23 stops being pulled out, so that the effect of clamping when the braid 23 is pulled sharply is realized; the retractor 24 may also be other webbing-pulling acceleration-sensitive retractor structures, such as a ball-type structure or a pendulum-type structure; coiler, meshbelt, eye-splice, picture peg all can directly use existing product on the volume production car, for example the driving seat safety belt structure that is qq car and the Otto car that the motorcade of Xihua university used is directly dismantled the back and install on the cycle racing, and this scheme does not optimize the coiler structure, consequently directly purchase current ripe product can.

The buckles 21 and the inserting plates 22 arranged between the first steel wire rope 12 and the braid 23 and between the retractor 24 and the second steel wire rope 25 are convenient for disassembly and assembly and maintenance, or the first steel wire rope 12 and the braid 23 can be directly tightened, and the second steel wire rope 25 and a connecting hole arranged on the casing of the retractor 24 can be tightened, so that the connection is a fixed connection, and the automobile seat can be used when the number of times of maintenance of racing cars is small;

the other end of the second steel wire rope 25 is tightly bound with one end of the first swing rod 15 or is connected with the first swing rod 15 through a hanging ring and a lifting hook, the middle part of the first swing rod 15 is connected with a racing car frame in a hinge mode, and the first swing rod 15 is positioned above the motor or the transmission; the other end of the first swing rod 15 is hinged with one end of the second swing rod 16, the other end of the second swing rod 16 is hinged with the bottom of a fork rod body of the shifting fork 17, a shifting fork ring at the end part of the fork rod of the shifting fork 17 is sleeved in an annular groove arranged on the outer side surface of the second sliding block 18, the second sliding block 18 is matched with a horizontal guide rail 19 arranged on a steel pipe of a racing car frame, and the horizontal guide rail 19 is arranged along the longitudinal direction of the racing car; the fork 17 slides along the horizontal guide rail 19; a circular hole is formed in the side face of one side of the second sliding block 18, a rotating shaft of the tension pulley 20 is inserted into the circular hole, the tension pulley 20 is tightly attached to the outer side face of the belt 5, one end of the belt 5 is sleeved on the rotating shaft 1, and the other end of the belt 5 is sleeved on an engine output shaft or a transmission output shaft; the outer side face of one end of the first swing rod 15 is connected with one end of a second return spring 10 in a welded or buckled mode, and the other end of the second return spring 10 is connected with one end face of a second sliding block 18 in a welded or buckled mode;

the rotary shaft 1 is positioned above an engine or a transmission, needle roller bearings are sleeved at two ends of the rotary shaft 1 and are installed in a cylindrical bearing support 2, a square support lug 3 with a through hole is sleeved or welded at one end, far away from the center of the rotary shaft 1, of the bearing support 2, and the support lug 3 is connected with the square support with the threaded hole, welded at the corresponding position on a racing car frame, through a bolt; the generator 6 is sleeved outside the center of the rotating shaft 1, a base flange of the generator 6 is connected with a square support which is welded at a corresponding position on a racing car frame and is provided with a threaded hole, and a rubber sleeve is wrapped outside a connecting bolt between the generator 6 and the frame.

When the racing car is manufactured, the routing layout and the theoretical length of a first steel wire rope 12 and a second steel wire rope 25 are determined according to the size of a car frame, the position of a brake pedal 14, the position of an engine or a transmission, the position of a first swing rod 15 and the position of a second swing rod 16, when the first steel wire rope 12 is routed, the part between the brake pedal 14 and the first swing rod 15 is routed from the edge floor at one side of a cabin of the racing car, a driver seat is bypassed, and when the first steel wire rope 12 is routed, a buckle or thread connection type support or a steel wire rope sleeve can be used for local limiting, so that the driver can be ensured not to interfere with the first steel wire rope 12; in order to save cost, the first steel wire rope 12 and the second steel wire rope 25 are Chevrolet New Sailou 1.4 clutch pull wires, or Changhe Beidou satellite clutch pull wires, or Futian L0162030018A0 clutch pull wires, or clutch pull wires for other types of automobiles; when the clutch stay wire for the automobile is used, the clutch stay wire for the automobile comprises a wire body, a support and a manual length adjusting mechanism, the use principle of the first steel wire rope 12 and the second steel wire rope 25 in the scheme is consistent with that of the stay wire of the automobile clutch, and the existing automobile clutch stay wire can be directly used.

The utility model discloses a use method does: when a racing driver lightly brakes or slowly steps on the brake pedal 14, the mesh belt 23 in the retractor 24 is drawn out and moves together with the first steel wire rope 12, the retractor 24 body does not move under the action of the first return spring 43, the second steel wire rope 25, the first swing rod 15 and the second swing rod 16 do not move, no pressing force exists between the tension pulley 20 and the belt 5, the rotating shaft 1 does not rotate, and the generator does not work;

when a racer steps on the brake pedal 14 suddenly, the webbing 23 in the retractor 24 is clamped and does not extend, the housing of the retractor 24 overcomes the elastic force of the first return spring 43, and moves together with the first wire rope 12 and the second wire rope 25 to drive the first swing rod 15 and the second swing rod 16 to move, so that the slide block 18 moves along the guide rail 19, the tension pulley 20 presses the belt 5, so that the belt 5 can transmit the output torque of an engine or a transmission to the rotating shaft 1, the generator 6 sleeved on the rotating shaft 1 starts generating electricity and provides braking resistance for the racer, the current generated by the generator 6 is transmitted to a storage battery through the rectification of the rectifier to be stored, the scheme is only innovated for the braking part of the racer, and the generator, the rectifier and the storage battery part can be directly matched with manufacturers recommended by FSAE group committee or purchased by self, for example, a 48V/60V generator component developed by the OME company, the system comprises a generator, a rectifier, a controller and a storage battery, and can also use braking energy recovery devices of other manufacturers.

Slowly releasing the brake pedal 14, so that the retractor 24 returns under the action of the first return spring 43, and at the moment, the retractor 24 returns to the initial form, and the webbing 23 can be pulled out again or clamped again; in practical use, if the brake pedal 14 is suddenly stepped on and then loosened, the retractor 24 can return, the braid 23 in the retractor 24 is still in a blocked state, the brake pedal 14 can be lightly pressed, then the braid 23 can be loosened from the blocked state, and the retractor 24 returns to the initial state;

the better implementation mode is as follows: the length of the mesh belt 23 which can extend out of the retractor 24 is defined as a first length, the length of the mesh belt 23 which extends out under the condition that the mesh belt 23 is not blocked by the retractor 24 after the brake pedal 14 is stepped on to the bottom is defined as a second length, and the first length is smaller than the second length; therefore, when a racer slowly steps on a brake in a long time, when the mesh belt 23 slowly extends out of the retractor 24, the generator does not work, and when the mesh belt completely extends out of the retractor 24 and continues to move together with the retractor 24, the generator starts to work, namely when the racer meets the working condition that a driver needs large braking force and the stepping speed is low, part of energy can be recovered, wherein the working condition is common in the braking process of the racing car after the racing car is accelerated on a linear track;

the special arresting gear of this scheme can effectively adapt to the motorcycle race under different braking operating modes, the automation of braking energy recovery mechanism is opened or is closed, excellent in use effect, and whether the braking energy recovery mechanism is opened relies on the automatic judgement of coiler, need not additionally set up sensor and electrical system, also need not racing driver independent control, the security is high and convenient to use, and this arresting gear can directly reform transform on current motorcycle race, braking energy recovery mechanism wherein, the coiler, the meshbelt, the stay cord all can directly purchase or use the ripe product installation of volume production car, moreover, the steam generator is simple in structure, low cost, especially adapted university student's equation motorcycle race uses.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (3)

1. Special arresting gear of electronic cycle racing of college student's equation, its characterized in that: the braking device comprises a braking mechanism and a braking energy recovery mechanism, wherein the braking mechanism is installed on the electric racing car and is an existing hydraulic disc type braking mechanism or an electric drive disc type braking mechanism of the racing car;

the braking energy recovery mechanism comprises a connecting rod (11) welded at the front end of a braking pedal (14), the connecting rod (11) is perpendicular to the length direction of the braking pedal (14), one end of the connecting rod (11) penetrating into a first steel wire rope (12) in a through hole formed in one end, close to the outer side of a racing car, of the connecting rod (11), the other end of the first steel wire rope (12) is tightly bound and connected with one end of a buckle (21), a slot of the buckle (21) is matched with a tongue piece of an inserting plate (22), the inserting plate (22) is tightly bound and connected with one end of a braid (23), the other end of the braid (23) penetrates into a retractor (24), a shell of the retractor (24) is connected or tightly bound with one end of a second steel wire rope (25) through the buckle/inserting plate, the shell of the retractor (24) is connected or bolted with a first sliding block (41) in a buckling mode, the first sliding block (41, the second horizontal guide rail (42) is installed at the corresponding position of the frame of the racing car in a bolt or welding mode, and the second horizontal guide rail (42) is arranged along the longitudinal direction of the racing car; one end face of the first sliding block (41) is connected with one end of a first return spring (43) in a welding or buckling mode, and the other end of the first return spring (43) is connected with a steel pipe of a racing car frame in a welding or buckling mode;

the other end of the second steel wire rope (25) is tightly bound with one end of the first swing rod (15) or is connected with one end of the first swing rod (15) through a lifting ring and a lifting hook, the middle part of the first swing rod (15) is connected with a racing car frame in a hinge mode, the other end of the first swing rod (15) is hinged with one end of the second swing rod (16), the other end of the second swing rod (16) is hinged with the bottom of a fork rod body of a shifting fork (17), a shifting fork ring at the end part of a fork rod of the shifting fork (17) is sleeved in an annular groove formed in the outer side face of the second sliding block (18), the second sliding block (18) is matched with a horizontal guide rail (19) arranged on a steel pipe of the racing car frame, and; the shifting fork (17) slides along the horizontal guide rail (19); a circular hole is formed in the side face of one side of the second sliding block (18), a rotating shaft of the tension pulley (20) is inserted into the circular hole, the tension pulley (20) is tightly attached to the outer side face of the belt (5), one end of the belt (5) is sleeved on the rotating shaft (1), and the other end of the belt is sleeved on an engine output shaft or a transmission output shaft; the outer side face of one end of the first swing rod (15) is connected with one end of a second return spring (10) in a welded or buckled mode, and the other end of the second return spring (10) is connected with one end face of a second sliding block (18) in a welded or buckled mode;

the rotary shaft (1) is positioned above an engine or a transmission, needle roller bearings are sleeved at two ends of the rotary shaft (1), the needle roller bearings are installed in a cylindrical bearing support (2), one end, far away from the center of the rotary shaft (1), of the bearing support (2) is sleeved with or welded with a square support lug (3) with a through hole, and the support lug (3) is connected with the square support with a threaded hole, welded at the corresponding position on a racing car frame, through a bolt; the generator (6) is sleeved on the outer side of the center of the rotating shaft (1), a base flange of the generator (6) is connected with a square support which is welded at a corresponding position on a racing car frame and is provided with a threaded hole, and a rubber sleeve is wrapped on the outer side of a connecting bolt between the generator (6) and the frame.

2. The brake apparatus of claim 1, wherein: the structures of the eye-splice (21) and the plugboard (22) are consistent with those of the eye-splice and the plugboard for the automobile safety belt, and the structure of the woven belt (23) is consistent with that of the woven belt for the automobile safety belt; the structure of the retractor (24) is consistent with that of an acceleration sensitive retractor pulled out of a mesh belt for an automobile safety belt.

3. The brake apparatus of claim 1, wherein: the length of the mesh belt (23) which can extend out of the retractor (24) is defined as a first length, the length of the mesh belt (23) which extends out under the condition that the mesh belt (23) is not clamped by the retractor (24) after the brake pedal (14) is stepped to the bottom is defined as a second length, and the first length is smaller than the second length.

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