CN210083183U - Brake for electric automobile based on hydraulic energy braking - Google Patents
Brake for electric automobile based on hydraulic energy braking Download PDFInfo
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- CN210083183U CN210083183U CN201920789531.1U CN201920789531U CN210083183U CN 210083183 U CN210083183 U CN 210083183U CN 201920789531 U CN201920789531 U CN 201920789531U CN 210083183 U CN210083183 U CN 210083183U
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Abstract
The utility model discloses a brake for electric automobile based on hydraulic energy braking, including hydraulic buffer and engagement device, engagement device includes driving shaft, the driven shaft that sets up with the driving shaft is coaxial, overlap respectively outside driving fluted disc and the driven fluted disc of driving shaft and driven shaft and lie in the actuating mechanism on the driven fluted disc, the driving shaft deviates from one end of driven shaft and tire rotation piece or wheel hub motor rotor fixed connection, driving fluted disc and driving shaft fixed connection; the hydraulic buffer device comprises a piston connected with one end of the driven shaft, which is far away from the driving shaft, an elastic part connected with the piston and used for resetting the piston, a hydraulic piston cylinder and a hydraulic system connected with the hydraulic piston cylinder and used for supplying oil to the hydraulic piston cylinder, wherein the piston can linearly move in the hydraulic piston cylinder. The utility model provides a stopper for electric automobile based on hydraulic pressure can braking utilizes hydraulic pressure can assist and provides braking torque, only needs to consume a small amount of electric energy.
Description
Technical Field
The utility model relates to a stopper technical field especially relates to a stopper for electric automobile based on hydraulic pressure can braking.
Background
Stone energy consumption aggravates increasingly in the world, and each country advocates using clean energy, advocates green trip, environmental protection trip. New energy automobiles such as electric automobiles and the like are popularized and used in various countries, the electric automobiles are various in braking modes, a mechanical braking mode of traditional friction braking can be adopted, a motor braking mode can be adopted, energy can be recycled for charging batteries in the motor braking mode, and electric energy consumption can be reduced. However, the braking torque required for rapidly braking the automobile cannot be completely provided by using the motor brake alone, and the conventional friction brake needs the motor to provide power under the condition that the power is not provided by the engine, so that the energy recovered by the motor brake is not enough to provide the energy required by the friction brake, and the energy of the automobile battery is additionally consumed, which is not beneficial to energy conservation.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a stopper for electric automobile based on hydraulic energy braking, aim at under the unable condition that provides sufficient braking torque of motor braking, utilize hydraulic energy to assist and provide braking torque, only need consume a small amount of electric energy.
In order to achieve the above purpose, the utility model provides a brake for electric automobile based on hydraulic energy brake, which comprises a hydraulic buffer device and a meshing device, wherein,
the meshing device comprises a driving shaft, a driven shaft, a driving fluted disc, a driven fluted disc and a driving mechanism, wherein the driven shaft is coaxially arranged with the driving shaft; when the brake is not applied, the driven shaft can rotate relative to the driving shaft; during braking, the driving mechanism drives the driven fluted disc to slide relative to the driven shaft so as to be meshed with the driving fluted disc to enable the driven shaft and the driving shaft to synchronously rotate to realize braking;
the hydraulic buffer device comprises a piston connected with one end of the driven shaft, which is far away from the driving shaft, an elastic part connected with the piston and used for resetting the piston, a hydraulic piston cylinder and a hydraulic system connected with the hydraulic piston cylinder and used for supplying oil to the hydraulic piston cylinder, wherein the piston can linearly move in the hydraulic piston cylinder.
Preferably, the brake for the electric vehicle based on the hydraulic energy braking further comprises a piston slide way surrounding the outer side of the piston, and the piston moves linearly in the piston slide way.
Preferably, the elastic part is a torsion return spring sleeved at the end part of one side of the driven shaft, which is close to the piston, a spring seat is arranged in the middle of the driven shaft, one end of the torsion return spring is positioned in the spring seat on the driven shaft, and the other end of the torsion return spring is fixedly connected with the end part of the piston.
Preferably, the hydraulic system comprises a throttle valve, a hydraulic oil tank, a check valve and a hydraulic pipeline, wherein the throttle valve, the hydraulic oil tank and the check valve are sequentially arranged, the hydraulic pipeline is connected with the throttle valve, the check valve and the hydraulic oil tank, one end of the throttle valve is connected with an oil outlet of the hydraulic piston cylinder through the hydraulic pipeline, and one end of the check valve is connected with an oil inlet of the hydraulic piston cylinder through the hydraulic pipeline.
Preferably, the driving mechanism comprises a cam which is installed on the outer side wall of the driven fluted disc and can rotate relative to the driven fluted disc and a tension return spring for cam return, two ends of the tension return spring are respectively and fixedly connected with the cam and the driven fluted disc, and under the automobile braking state, the cam rotates to enable the driven fluted disc to be meshed with the driving fluted disc through the trapezoidal teeth.
Preferably, a plurality of sets of driving mechanisms are uniformly distributed on the circumferential direction of the driven fluted disc.
Preferably, a thread is arranged outside the end part of the driven shaft close to one end of the piston, a threaded hole is formed in one side, facing the driven shaft, of the piston, and the driven shaft is inserted into the threaded hole of the piston to perform thread transmission.
Preferably, a centering ring is sleeved at the joint of the driven shaft and the driving shaft to center the axes of the two shafts.
Preferably, the driving fluted disc is fixedly connected with the driving shaft through a key.
Preferably, the driven fluted disc is in sliding connection with the driven shaft through a guide key.
The utility model provides a stopper for electric automobile based on hydraulic pressure can braking has following beneficial effect:
1. the method of the traditional brake which brakes by friction is changed. The conventional disc brake provides frictional braking by clamping a brake disc through a brake caliper, and the conventional drum brake provides frictional braking by spreading brake shoes against a brake drum, and both braking modes require a large amount of energy to be supplied by an engine to a master cylinder and a slave cylinder so as to generate enough positive force to press the brake disc or the brake drum to generate the frictional force. The utility model changes the direction of the actuating force, only needs the electric automobile to provide a small amount of electric energy to drive the cam to rotate, so that the driven fluted disc is meshed with the driving fluted disc, thereby driving the driven shaft to rotate, the piston gradually extends out under the action of the driven shaft screw transmission to extrude the hydraulic oil in the hydraulic piston cylinder, and the driving fluted disc is forced to stop rotating by utilizing the generated hydraulic energy;
2. high efficiency, energy saving and improvement of the endurance mileage of the electric automobile. The novel automobile brake assists the motor to brake to provide brake for an automobile, the automobile brake can be realized by utilizing hydraulic energy only by consuming a small amount of energy by the motor to drive the cam to rotate, and the braking energy can be recovered by the motor brake in the braking process to charge a battery;
3. the brake system replaces a complex traditional brake system, has a simple and compact structure and light weight, and is convenient for the light weight of the electric automobile;
4. the in-wheel motor has high integration level, excellent sealing performance and great heat production and poor heat dissipation, which is a big defect. The utility model discloses utilize hydraulic pressure energy braking, the friction is little, and it is low to generate heat, is fit for integrating in the various driving motor of taking turns.
Drawings
Fig. 1 is the utility model discloses a structural schematic of stopper for electric automobile based on hydraulic energy braking.
In the figure, 1, a driving fluted disc; 2. a driven fluted disc; 3. stretching the return spring; 4. a cam; 5. a driven shaft; 6. a thread; 7. a piston slide; 8. a piston; 9. a hydraulic piston cylinder; 10. a throttle valve; 11. a hydraulic oil pipe; 12. a hydraulic oil tank; 13. a one-way valve; 14. a torsion return spring; 15. a spring seat; 16. a guide key; 17. a centering ring; 18. a drive shaft.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, in the preferred embodiment, a brake for an electric vehicle based on hydraulic energy braking includes a hydraulic buffer device and an engagement device, wherein,
the meshing device comprises a driving shaft 18, a driven shaft 5, a driving fluted disc 1, a driven fluted disc 2 and a driving mechanism, wherein the driven shaft 5 is coaxially arranged with the driving shaft 18, the driving fluted disc 1 and the driven fluted disc 2 are respectively sleeved outside the driving shaft 18 and the driven shaft 5, the driving mechanism is positioned on the driven fluted disc 2, one end of the driving shaft 18, which is far away from the driven shaft 5, is fixedly connected with a tire rotating part or a hub motor rotor, and the driving fluted disc 1 is fixedly; when not braking (i.e. normal driving condition), the driven shaft 5 can rotate relative to the driving shaft 18; during braking, the driven fluted disc 2 is driven by the driving mechanism to slide relative to the driven shaft 5 and is meshed with the driving fluted disc 1, so that the driven shaft 5 and the driving shaft 18 synchronously rotate to realize braking;
the hydraulic buffer device comprises a piston 8 connected with one end of the driven shaft 5, which is far away from the driving shaft 18, an elastic part connected with the piston 8 and used for resetting the piston, a hydraulic piston cylinder 9 and a hydraulic system connected with the hydraulic piston cylinder 9 and used for supplying oil to the hydraulic piston cylinder 9, wherein the piston 8 can linearly move in the hydraulic piston cylinder 9.
The driving shaft 18 is arranged at the rightmost side, the driving toothed disc 1 is fixedly connected with the driving shaft 18 through keys, and the driving toothed disc 1 and the driving shaft 18 rotate synchronously. The driven fluted disc 2 is connected with the driven shaft 5 in a sliding way through a guide key 16. The driven fluted disc 2 is arranged on the left side of the driving fluted disc 1 and is connected to the right end of the driven shaft 5 through a guide key 16, and the driven fluted disc 2 can slide in the direction of the guide key 16.
Furthermore, the brake for the electric automobile based on hydraulic energy braking further comprises a piston slide way 7 which is arranged around the outer side of the piston 8, and the piston 8 moves linearly in the piston slide way 7. By arranging the piston slide way 7, the reliable sliding of the piston 8 is ensured.
In this embodiment, the elastic member is a torsion return spring 14 sleeved at an end portion of the driven shaft 5 close to the piston 8, a spring seat 15 is disposed in the middle of the driven shaft 5, one end of the torsion return spring 14 is located in the spring seat 15 on the driven shaft 5, and the other end of the torsion return spring is fixedly connected with the end portion of the piston 8.
Specifically, the hydraulic system comprises a throttle valve 10, a hydraulic oil tank 12, a check valve 13 and a hydraulic pipeline for connecting the throttle valve 10, the check valve 13 and the hydraulic oil tank 12, wherein the throttle valve 10, the check valve 13 and the hydraulic pipeline are sequentially arranged, one end of the throttle valve 10 is connected with an oil outlet of the hydraulic piston cylinder 9 through the hydraulic pipeline, and one end of the check valve 13 is connected with an oil inlet of the hydraulic piston cylinder 9 through the hydraulic pipeline.
Actuating mechanism is including installing on 2 lateral walls of driven fluted disc and for its rotatable cam 4 and be used for the tensile reset spring 3 that cam 4 resets, tensile reset spring 3's both ends respectively with cam 4 and 2 fixed connection of driven fluted disc, under the automobile brake state, rotate through cam 4, drive driven fluted disc and remove to mesh through trapezoidal tooth with driving fluted disc 1 to the realization is to the braking of driving shaft 18 pivoted. Further, a plurality of sets of driving mechanisms are uniformly distributed on the circumferential direction of the driven fluted disc 2 so as to realize stable braking.
Specifically, the cam 4 and the extension return spring 3 are fixedly installed on the left step of the driven fluted disc 2, four sets of the extension return springs are distributed in an annular mode, and the rotation angle of the cam 4 is positively correlated with the braking force of the brake pedal. Under the normal driving state, the cam 4 is positioned at the initial position, and the driving fluted disc 1 and the driven fluted disc 2 are kept in a disengaged state under the action of the extension return spring 3; under the braking state of the automobile, the cam 4 rotates to enable the driven fluted disc 2 to be meshed with the driving fluted disc 1 through the trapezoidal gear; when the automobile returns to the normal driving state from the braking state, the cam 4 returns to the initial state, the driven fluted disc 2 returns to the initial state under the action of the extension return spring 3, and the driven fluted disc 2 is disengaged from the driving fluted disc 1.
In addition, a thread is arranged outside the end part of the driven shaft 5 close to one end of the piston 8, a threaded hole is formed in one side, facing the driven shaft 5, of the piston 8, and the driven shaft 5 is inserted into the threaded hole of the piston 8 to perform thread transmission.
The joint of the driven shaft 5 and the driving shaft 18 is sleeved with a centering ring 17 to center the axes of the two shafts. The centering ring 17 is located inside the driven toothed disc 2.
The piston 8 is linearly movable within a hydraulic piston cylinder 9. When the automobile normally runs, the piston 8 is positioned at the initial position under the action of the torsional return spring 14; when the automobile is braked, the driven fluted disc 2 is meshed with the driving fluted disc 1, the driven shaft 5 rotates, the piston 8 is driven to extend out under the action of thread transmission, hydraulic oil in the hydraulic piston cylinder 9 is extruded, the piston 8 is forced to stop advancing, and therefore the rotating shaft stops rotating; when the vehicle returns from the braking state to the normal driving state, the piston 8 returns to the initial state under the action of the torsion return spring 14.
The left side of the hydraulic piston cylinder 9 is communicated with a hydraulic oil tank 12 at the lower part through a hydraulic oil pipe 11, a throttle valve 10 is arranged in a loop of the hydraulic oil pipe 11 to control the flow of the hydraulic oil, and the flow controlled by the throttle valve 10 is inversely related to the braking force of a brake pedal. When the automobile is lightly braked, the opening degree of the throttle valve 10 is larger, the hydraulic oil flow is larger, and the mild braking is realized; when the automobile is emergently braked, the opening degree of the throttle valve 10 is smaller, the flow of hydraulic oil is smaller, and the emergency brake is realized.
The lower side of the hydraulic piston cylinder 9 is communicated with a hydraulic oil tank 12 through a hydraulic oil pipe 11, and a check valve 13 is arranged in an oil pipe loop to control the hydraulic oil to only flow from the hydraulic oil tank 12 to the hydraulic piston cylinder 9 in a single direction. When the automobile is braked, the piston 8 extrudes hydraulic oil in the hydraulic piston cylinder 9, the hydraulic oil can only flow out from a pipeline provided with the throttle valve 10, when the automobile is restored to a normal running state from a braking state, the piston 8 returns to an initial state, and the hydraulic oil in the hydraulic oil tank 12 is sucked into the hydraulic piston cylinder 9 through the check valve 13 by negative pressure generated in the hydraulic piston cylinder 9.
The hydraulic oil tank 12 may be provided so as to be common to all the brakes or may be provided so as to be provided for each set of brakes.
The brake for the electric automobile based on the hydraulic energy braking has the following working principle. Under the normal driving state, the cam 4 is positioned at the initial position, and the driving fluted disc 1 and the driven fluted disc 2 are kept in a disengaged state under the action of the extension return spring 3; in the automobile braking state, the cam 4 rotates to enable the driven fluted disc 2 and the driving fluted disc 1 to be meshed through the trapezoidal gear, the driven shaft 5 rotates to drive the piston 8 to extend out under the action of thread transmission, hydraulic oil in the hydraulic piston cylinder 9 is extruded, and the piston 8 is forced to stop advancing by utilizing hydraulic energy, so that the driving shaft 18 stops rotating; when the automobile returns to the normal driving state from the braking state, the cam 4 returns to the initial state, the driven fluted disc 2 returns to the initial state under the action of the extension return spring 3, the driven fluted disc 2 is disengaged from the driving fluted disc 1, and the plug returns to the initial state under the action of the torsion return spring 14.
The utility model provides a stopper for electric automobile based on hydraulic pressure can braking has following beneficial effect:
1. the method of the traditional brake which brakes by friction is changed. The conventional disc brake provides frictional braking by clamping a brake disc through a brake caliper, and the conventional drum brake provides frictional braking by spreading brake shoes against a brake drum, and both braking modes require a large amount of energy to be supplied by an engine to a master cylinder and a slave cylinder so as to generate enough positive force to press the brake disc or the brake drum to generate the frictional force. The utility model changes the direction of the actuating force, only needs the electric automobile to provide a small amount of electric energy to drive the cam 4 to rotate, so that the driven fluted disc 2 is meshed with the driving fluted disc 1, thereby driving the driven shaft 5 to rotate, the piston 8 gradually extends out under the action of the thread transmission of the driven shaft 5, the hydraulic oil in the hydraulic piston cylinder 9 is extruded, and the generated hydraulic energy is utilized to force the driving fluted disc 1 to stop rotating;
2. high efficiency, energy saving and improvement of the endurance mileage of the electric automobile. The novel automobile brake assists the motor to brake to provide brake for an automobile, the automobile brake can be realized by utilizing hydraulic energy only by consuming a small amount of energy by the motor to drive the cam 4 to rotate, and the braking energy can be recovered by the motor brake in the braking process to charge a battery;
3. the brake system replaces a complex traditional brake system, has a simple and compact structure and light weight, and is convenient for the light weight of the electric automobile;
4. the in-wheel motor has high integration level, excellent sealing performance and great heat production and poor heat dissipation, which is a big defect. The utility model discloses utilize hydraulic pressure energy braking, the friction is little, and it is low to generate heat, is fit for integrating in the various driving motor of taking turns.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A brake for an electric automobile based on hydraulic energy braking is characterized by comprising a hydraulic buffer device and an engaging device, wherein,
the meshing device comprises a driving shaft, a driven shaft, a driving fluted disc, a driven fluted disc and a driving mechanism, wherein the driven shaft is coaxially arranged with the driving shaft; when the brake is not applied, the driven shaft can rotate relative to the driving shaft; during braking, the driving mechanism drives the driven fluted disc to slide relative to the driven shaft so as to be meshed with the driving fluted disc to enable the driven shaft and the driving shaft to synchronously rotate to realize braking;
the hydraulic buffer device comprises a piston connected with one end of the driven shaft, which is far away from the driving shaft, an elastic part connected with the piston and used for resetting the piston, a hydraulic piston cylinder and a hydraulic system connected with the hydraulic piston cylinder and used for supplying oil to the hydraulic piston cylinder, wherein the piston can linearly move in the hydraulic piston cylinder.
2. The brake for electric vehicle based on hydraulic energy braking as claimed in claim 1, further comprising a piston slide way surrounding the outside of the piston, in which the piston moves linearly.
3. The brake for electric vehicle based on hydraulic energy braking as claimed in claim 1, wherein the elastic member is a torsion return spring sleeved on an end portion of the driven shaft near the piston, a spring seat is provided in a middle portion of the driven shaft, one end of the torsion return spring is located in the spring seat on the driven shaft, and the other end is fixedly connected with the end portion of the piston.
4. The brake for the electric automobile based on hydraulic energy braking as claimed in claim 1, wherein the hydraulic system comprises a throttle valve, a hydraulic oil tank and a check valve which are arranged in sequence, and a hydraulic pipeline connecting the throttle valve, the check valve and the hydraulic oil tank, wherein one end of the throttle valve is connected with an oil outlet of the hydraulic piston cylinder through the hydraulic pipeline, and one end of the check valve is connected with an oil inlet of the hydraulic piston cylinder through the hydraulic pipeline.
5. The brake for electric vehicle based on hydraulic energy braking as claimed in claim 1, wherein the driving mechanism includes a cam mounted on an outer side wall of the driven gear disc and rotatable relative thereto, and a tension return spring for returning the cam, two ends of the tension return spring are respectively fixedly connected to the cam and the driven gear disc, and in the braking state of the vehicle, the cam rotates to engage the driven gear disc with the driving gear disc through the trapezoidal teeth.
6. The brake for electric vehicle based on hydraulic energy braking as claimed in claim 5, wherein the driven fluted disc is circumferentially and uniformly distributed with a plurality of sets of driving mechanisms.
7. The brake for the electric vehicle based on the hydraulic energy brake as claimed in claim 1, wherein the end of the driven shaft near the piston is externally provided with a screw thread, the piston is provided with a screw thread hole towards one side of the driven shaft, and the driven shaft is inserted into the screw thread hole of the piston for screw transmission.
8. The brake for electric vehicle based on hydraulic energy brake as claimed in claim 1, wherein the joint of the driven shaft and the driving shaft is sleeved with a centering ring to center the axes of the two shafts.
9. The brake for the electric vehicle based on the hydraulic energy brake as claimed in claim 1, wherein the driving fluted disc is fixedly connected with the driving shaft through a key.
10. The brake for the electric vehicle based on the hydraulic energy brake as set forth in claim 1, wherein the driven fluted disc is slidably connected with the driven shaft through a guide key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789531.1U CN210083183U (en) | 2019-05-28 | 2019-05-28 | Brake for electric automobile based on hydraulic energy braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789531.1U CN210083183U (en) | 2019-05-28 | 2019-05-28 | Brake for electric automobile based on hydraulic energy braking |
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| Publication Number | Publication Date |
|---|---|
| CN210083183U true CN210083183U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920789531.1U Active CN210083183U (en) | 2019-05-28 | 2019-05-28 | Brake for electric automobile based on hydraulic energy braking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203179A (en) * | 2019-05-28 | 2019-09-06 | 武汉理工大学 | Brake for electric vehicle based on hydraulic energy braking |
| CN115179989A (en) * | 2022-07-19 | 2022-10-14 | 中国铁道科学研究院集团有限公司 | Control system for air resistance emergency braking of railway vehicle and braking device |
-
2019
- 2019-05-28 CN CN201920789531.1U patent/CN210083183U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203179A (en) * | 2019-05-28 | 2019-09-06 | 武汉理工大学 | Brake for electric vehicle based on hydraulic energy braking |
| CN115179989A (en) * | 2022-07-19 | 2022-10-14 | 中国铁道科学研究院集团有限公司 | Control system for air resistance emergency braking of railway vehicle and braking device |
| CN115179989B (en) * | 2022-07-19 | 2024-04-05 | 中国铁道科学研究院集团有限公司 | Control system and braking device for emergency braking of air resistance of railway vehicle |
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