CN213360900U - Power brake device and car - Google Patents
Power brake device and car Download PDFInfo
- Publication number
- CN213360900U CN213360900U CN202021852513.2U CN202021852513U CN213360900U CN 213360900 U CN213360900 U CN 213360900U CN 202021852513 U CN202021852513 U CN 202021852513U CN 213360900 U CN213360900 U CN 213360900U
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- gear
- energy conversion
- transmission
- brake
- speed change
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Abstract
The utility model discloses a dynamic braking device and an automobile, which comprises an energy conversion device; a piston rod of the energy conversion device is connected with one end of a transmission shaft of the first transmission gear; the first transmission gear is meshed with the brake disc driving gear; an oil outlet of the energy conversion device is communicated with an oil inlet of the hydraulic motor; the output shaft of the hydraulic motor is connected with the input shaft of the speed change clutch, and the output shaft of the speed change clutch is connected with the other end of the transmission shaft of the second transmission gear; and the second transmission gear is meshed with the brake disc driving gear. The utility model discloses a structure does not have the brake block and the wheel hub, the hot friction of braking between wheel drum or the dish, has eliminated friction heat energy.
Description
Technical Field
The utility model relates to a arresting gear, especially a power braking device and car.
Background
The braking device is a deceleration braking device with all power, and a set of safe and stable braking device is required no matter the braking device is an electric drive motor or an internal combustion engine consuming fuel. The principle of the brake system is to produce a great friction force, and particularly, the brake system converts the kinetic energy of a vehicle into frictional heat energy on the automobile. The existing brake device has two modes of drum brake and disc brake, and friction brake is generated between a brake pad and a hub, a wheel drum or a disc. The more the energy (including inertia energy) of the power is, the more the brake is frequently used during the running of the vehicle, the more the heat generated by the friction of the brake is, and the temperature of the brake is increased sharply. The higher the quality of the brake pad material, the strict requirements on the wear resistance and heat resistance of the brake pad material are required, and new materials and new processes are continuously researched domestically and abroad to ensure the safety, stability and reliability of braking.
The brake block is a key high-temperature wear-resistant material, so far, no wear-resistant material which can resist high load and high heat for a long time exists, and particularly, heat generated by friction in the whole brake process for a long time is difficult to dissipate heat, so that brake failure is caused, and great potential safety hazards exist on people and objects.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, it is not enough to prior art, provide a dynamic braking device and car, eliminate friction heat energy, can make the vehicle stop fast under emergency.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a dynamic braking device includes an energy conversion device; a piston rod of the energy conversion device is connected with one end of a transmission shaft of the first transmission gear; the first transmission gear is meshed with the brake disc driving gear; an oil outlet of the energy conversion device is communicated with an oil inlet of the hydraulic motor; the output shaft of the hydraulic motor is connected with the input shaft of the speed change clutch, and the output shaft of the speed change clutch is connected with the other end of the transmission shaft of the second transmission gear; and the second transmission gear is meshed with the brake disc driving gear.
The utility model discloses a structure can convert the kinetic energy of vehicle (including inertial energy) into another kind of reversible energy when the brake, and the kinetic energy (including inertial energy) that advances the vehicle is used in wheel hub through reverse transmission separation and reunion decelerator (speed change clutch), has formed a pair of balanced effort and reaction force. Namely: the original driving force makes the force going forward as acting force, and then the reverse force which changes the direction and forces the vehicle to brake and stop is the reaction force. Because they all come from the same power source, the size is equal, the direction is opposite, and it is speed-reducing and speed-changing transmission, there is no brake heat friction between brake block and wheel hub, wheel drum or disk, it eliminates friction heat energy, it can change the reaction force acted on the wheel by changing the transmission ratio of reverse clutch multi-gear speed reducer (i.e. speed-changing clutch), when the reaction force is less than the action force, the vehicle runs at a reduced speed, when the reaction force is equal to the action force, the vehicle brake stops, in emergency, the reaction force can be greater than the action force, the vehicle stops quickly.
And a piston rod of the energy conversion device is connected with one end of a transmission shaft of the first transmission gear through an elastic coupling.
And an oil outlet of the energy conversion device is communicated with an oil inlet of the hydraulic motor through an electro-hydraulic servo valve. The electro-hydraulic servo valve is electrically connected with the controller. The hydraulic motor can convert the pressure energy of oil into mechanical energy which reversely drives the hub brake disc to rotate when braking under the control of the electro-hydraulic servo valve.
And an output shaft of the speed change clutch is connected with the other end of the transmission shaft of the second transmission gear through a coupler.
The energy conversion device is communicated with the oil tank through an overflow valve. The overflow valve is used, the whole system can realize short-term system work stop under the condition that the pump speed is not changed, the system is in an open state when not working, the unloading pressure is not needed, the system is in a closed state when working, the system pressure is ensured, and meanwhile, the overflow valve plays a safety role and protects the normal operation of the system.
The speed change clutch is a speed change clutch with a synchronizer. The transmission synchronizer can make the gear entering smooth. The shifting operation of the transmission, particularly from high gear to low gear, is complicated and is liable to generate impact between the teeth of the gear or the spline. To simplify handling and to avoid backlash, a synchronizer can be provided in the shifting device.
The energy conversion device is a hydraulic oil pump.
The invention also provides an automobile which adopts the power braking device.
Compared with the prior art, the utility model discloses the beneficial effect who has does:
1. the structure of the utility model has no brake heat friction between the brake block and the wheel hub, the wheel drum or the disc, and eliminates the friction heat energy;
2. utilize the utility model discloses a structure, the transmission ratio that changes reverse separation and reunion multi-gear speed reducer (speed change clutch) just can change the size of the reaction force of effect on the wheel, and when the reaction force was less than the effort, vehicle deceleration operation, when the reaction force equals the effort, the vehicle braking stopped, can make the reaction force be greater than the effort under emergency, makes the vehicle stop fast.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the power brake device of the present invention includes a brake disc driving gear 1, a hydraulic oil pump 2, an electro-hydraulic servo valve 3, a low-speed hydraulic motor 4, a transmission clutch 5 with a synchronizer, a coupling 6, an elastic coupling 7, an overflow valve 8, a hydraulic oil tank 9, a guiding transmission gear 10 with a shaft (a first transmission gear), and a guiding transmission gear 11 with a shaft (a second transmission gear). The brake disc driving gear is a special transmission gear of the invention, bears acting force and reacting force in the transmission process, is acting force under the normal driving condition, and has reacting force under the braking or stopping condition. The hydraulic oil pump is an energy conversion device, and is linked with brake disc driving gear by means of guide transmission gear with shaft by means of elastic coupling, and can be used for converting the mechanical energy of wheel hub brake disc rotation into pressure energy of oil liquor, and under the control of electrohydraulic servo valve the hydraulic motor can convert the pressure energy of oil liquor into the mechanical energy capable of reversely driving wheel hub brake disc to make rotation, and under the normal condition of that the speed-changing clutch with synchronizer is positioned in synchronous neutral gear position, and can be synchronously run with wheel hub brake disc, the energy output by hydraulic motor can raise traction force for vehicle running, and only when the brake is implemented, the clutch speed changer with synchronizer can be operated to make low speed in different gears and change rotation direction. One end of the speed change clutch with the synchronizer is connected with the hydraulic motor, the other end of the speed change clutch is connected with the hub brake disc driving gear through the guide transmission gear with the shaft by the coupler, the speed change clutch is normally positioned at a synchronous neutral gear position, and the speed change clutch is converted into multi-gear low-speed reverse transmission only when braking and braking are carried out, so that a vehicle can slow down and can be parked safely and stably at best.
When the vehicle normally runs, all kinetic energy of the vehicle, including inertial kinetic energy, acts on the hub, a brake disc driving gear 1 of the hub is connected with an elastic coupling 7 through a guide transmission gear 11 with a shaft to drive an energy conversion device 2 to work, high-pressure hydraulic oil generated by the energy conversion device 2 enables a hydraulic motor 4 to work through an electro-hydraulic servo valve 3, the hydraulic motor 4 is connected with a speed change clutch 5 with a synchronizer, output force acts on the brake disc gear 1 of the hub through a guide transmission gear 10 with a shaft through a coupling 6, and a gear shifting change operating rod of the speed change clutch 5 with the synchronizer directly leads to a cab to facilitate brake gear shifting operation. When the vehicle runs normally, the speed change clutch 5 with the synchronizer is in a synchronous neutral position, and the hydraulic motor 4 outputs acting force to the hub brake disc gear 1 through the speed change clutch 5 with the synchronizer, so that the function of enhancing the traction force of the vehicle can be achieved; when braking, the reaction force of the force output by the hydraulic motor is converted into reverse multi-gear low speed through the gear position, the reverse multi-gear low speed is applied to the brake disc gear 1 of the wheel hub, the wheel hub is forced to brake, the gear position of the speed change clutch 5 with the synchronizer is changed according to the field requirement, the reaction force applied to the brake disc gear 1 is changed in magnitude, and the vehicle is decelerated and slowed or stopped. Since a pair of reaction and reaction forces are applied to the hub brake disc gear 1, the transmission clutch 5 with synchronizer is a synchronous reaction force in the neutral position and a reverse reaction force in the other low speed position. Because the transmission of the acting force and the reacting force is through gear transmission, as long as the lubricating condition meets the requirement, the purposes of improving the traction force, increasing the kinetic energy and reducing the fuel consumption when the vehicle normally runs can be achieved; the vehicle can be safely and stably decelerated or stopped when being braked, the defects of high-temperature overheating caused by brake friction and brake failure do not exist, the running performance of the whole vehicle can be greatly improved, the service life of the whole vehicle is prolonged, and particularly, the running safety is reliably guaranteed.
Claims (9)
1. A dynamic braking device, characterized by comprising an energy conversion device; a piston rod of the energy conversion device is connected with one end of a transmission shaft of the first transmission gear; the first transmission gear is meshed with the brake disc driving gear; an oil outlet of the energy conversion device is communicated with an oil inlet of the hydraulic motor; an output shaft of the hydraulic motor is connected with an input shaft of a speed change clutch, and an output shaft of the speed change clutch is connected with the other end of a transmission shaft of the second transmission gear; and the second transmission gear is meshed with the brake disc driving gear.
2. A dynamic braking device according to claim 1, characterised in that the piston rod of the energy conversion means is connected to one end of the drive shaft of the first drive gear by means of an elastic coupling.
3. A dynamic braking apparatus according to claim 1 wherein the oil outlet of the energy conversion means communicates with the oil inlet of the hydraulic motor via an electro-hydraulic servo valve.
4. A dynamic braking apparatus according to claim 3, wherein the electro-hydraulic servo valve is electrically connected to a controller.
5. The dynamic brake apparatus according to claim 1, wherein the output shaft of the speed change clutch is connected to the other end of the transmission shaft of the second transmission gear through a coupling.
6. A dynamic brake device according to claim 1, characterised in that the energy conversion means communicates with a reservoir via a relief valve.
7. A dynamic brake device according to any one of claims 1 to 6, wherein the speed change clutch is a speed change clutch with a synchronizer.
8. A dynamic brake device according to any one of claims 1 to 6, characterised in that the energy conversion means is a hydraulic oil pump.
9. An automobile, characterized in that it employs the dynamic braking device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852513.2U CN213360900U (en) | 2020-08-31 | 2020-08-31 | Power brake device and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852513.2U CN213360900U (en) | 2020-08-31 | 2020-08-31 | Power brake device and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213360900U true CN213360900U (en) | 2021-06-04 |
Family
ID=76149764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021852513.2U Active CN213360900U (en) | 2020-08-31 | 2020-08-31 | Power brake device and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213360900U (en) |
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2020
- 2020-08-31 CN CN202021852513.2U patent/CN213360900U/en active Active
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