CN111255829A - Hydraulic brake stator and hydraulic brake - Google Patents
Hydraulic brake stator and hydraulic brake Download PDFInfo
- Publication number
- CN111255829A CN111255829A CN201811451297.8A CN201811451297A CN111255829A CN 111255829 A CN111255829 A CN 111255829A CN 201811451297 A CN201811451297 A CN 201811451297A CN 111255829 A CN111255829 A CN 111255829A
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- stator
- oil inlet
- blade
- hydraulic brake
- blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/02—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades or like members braked by the fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a hydraulic brake stator and a hydraulic brake, wherein the hydraulic brake stator comprises a stator body and a plurality of stator blades arranged on the stator body, the stator is provided with an oil inlet hole and an oil discharge hole, the oil inlet hole extends from the back surface of the stator to the front surface of the stator through the interior of the stator blades, and the oil discharge hole is arranged at the edge of the stator. The hydraulic brake stator and the hydraulic brake can realize quick oil charging and discharging, have high braking response speed and are suitable for high-speed vehicles; the brake is small, light in weight and convenient to install; the brake is suitable for long-time continuous braking without mechanical abrasion; the downhill driving safety is improved, and the constant low speed of the downhill can be realized; the noise is low; the continuous braking capability is strong.
Description
Technical Field
The invention relates to a hydraulic brake device, in particular to a hydraulic brake stator and a hydraulic brake.
Background
The brake shoe brake is frequently used to control the speed of the rolling stock running on a mountain area when the rolling stock runs downhill, the brake shoe is seriously worn due to long-term use, and a large amount of heat is generated, so that the rolling stock is very unfavorable for the safe running of the rolling stock.
In addition to the need for auxiliary braking means on the locomotive, it is required for safety reasons that the speed of the locomotive is adjustable or kept constant at a low speed downhill for vehicles running downhill, i.e. the braking power is steplessly adjustable depending on the vehicle speed.
At present, the following locomotive auxiliary braking modes are commonly used:
1. hydraulic brake
The hydraulic brake device realizes braking by generating braking torque on a hydraulic pump shaft through liquid flow throttling, and energy is converted into heat energy through the throttling of the liquid. It can provide constant torque braking from zero speed to any working point of high speed, but it can only be used in the range of medium and small power due to the restriction of volume, and the hydraulic pump is worn.
2. Engine exhaust brake
A valve is installed in the exhaust pipe of the engine, and when the valve is closed, the engine is operated as an air compressor, and in the exhaust stroke, the gas in the exhaust manifold is compressed, and the engine obtains negative work, thereby generating braking force. This braking mode is noisy and complicated to control.
3. Electric eddy current type brake
After the power is switched on, the coil generates a magnetic field, the disc rotates in the magnetic field to generate an eddy current, and the eddy current and the magnetic field interact to generate a braking torque. The braking torque provided by this braking method is relatively small.
4. Hydraulic brake
The working wheel is formed by a stator and a rotor. The kinetic energy of the rolling stock is converted into the heat energy of the liquid by the action of the liquid flow in the working wheel, and the rolling stock is braked by a heat dissipation mode of a cooler, so that the rolling stock is suitable for braking from 30km/h to 200 km/h.
The hydraulic brake is used as an auxiliary brake mode of a locomotive and has remarkable advantages, but the existing hydraulic brake device is large in oil filling and discharging resistance, long in brake response time and not suitable for high-speed vehicles.
Disclosure of Invention
The invention aims at solving the problems and researches and designs a hydraulic brake stator and a hydraulic brake. The technical means adopted by the invention are as follows:
the utility model provides a hydraulic brake stator, includes stator body and a plurality of stator blade of setting on stator body, be equipped with inlet port and oil drain hole on the stator, the front that the inlet port extends to the stator through stator blade inside from the back of stator, the oil drain hole sets up the edge at the stator.
Further, the plurality of stator blades are divided into conventional blades and oil inlet blades, the oil inlet hole penetrates through the inside of the oil inlet blade, and the thickness of the part, provided with the oil inlet hole, of the oil inlet blade is larger than that of the conventional blades.
Furthermore, the middle part of the edge of the oil inlet blade is recessed inwards to form an oil inlet hole end face, the oil inlet hole end face is perpendicular to the oil inlet blade, and the oil inlet hole extends to the oil inlet hole end face from the back face of the stator.
Further, the stator blades incline towards the rotation direction of the rotor, the inclination angle of the stator blades is 30-45 degrees, and the central axis of the oil inlet hole is parallel to the direction of the stator blades.
Further, the oil discharge hole is located at the joint of the root of the stator blade and the bottom surface of the stator, and the central axis of the oil discharge hole is parallel to the direction of the corresponding stator blade.
Further, the inclination angle of the stator blade is 45 degrees.
A hydraulic brake comprises a rotor and any one of the hydraulic brake stators, wherein a plurality of rotor blades are arranged on the rotor.
Further, the rotor blades and the stator blades have the same pitch direction and pitch angle.
Furthermore, the back of the rotor is provided with auxiliary blades which are strip-shaped rib-shaped protrusions.
Further, the extension line of the central shaft of the auxiliary blade is tangent to the inner hole edge of the rotor.
Compared with the prior art, the hydraulic brake stator and the hydraulic brake can realize quick oil charging and discharging, have high braking response speed and are suitable for high-speed vehicles; the brake is small, light in weight and convenient to install; the brake is suitable for long-time continuous braking without mechanical abrasion; the downhill driving safety is improved, and the constant low speed of the downhill can be realized; the noise is low; the continuous braking capability is strong.
Drawings
Fig. 1 is a schematic structural diagram of a stator according to an embodiment of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
Fig. 4 is a schematic structural diagram of a hydraulic brake according to an embodiment of the present invention.
Fig. 5 is a schematic view of a back structure of a rotor according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 3, a hydraulic brake stator 8 includes a stator body and a plurality of stator vanes 1 disposed on the stator body, the stator is provided with an oil inlet hole 2 and an oil discharge hole 3, the oil inlet hole 2 extends from the back of the stator to the front of the stator through the inside of the stator vane 1, and the oil discharge hole 3 is disposed at the edge of the stator.
The plurality of stator vanes 1 are divided into conventional vanes 1 'and oil inlet vanes 1 ", the oil inlet hole 2 penetrates through the inside of the oil inlet vane 1", and the thickness of the part of the oil inlet hole 2 of the oil inlet vane 1 "is larger than that of the conventional vanes 1'. In this embodiment, a plurality of oil inlet vanes 1 "are circumferentially distributed on the stator, and two or more conventional vanes 1' are provided between adjacent oil inlet vanes 1".
The middle part of the edge of the oil inlet blade 1 'is concave to form an oil inlet end face 4, the oil inlet end face 4 is perpendicular to the oil inlet blade 1', and the oil inlet 2 extends to the oil inlet end face 4 from the back of the stator. The oil inlet hole 2 crosses the stator blade 1 and directly reaches the center of a circle formed by the rotor and the stator, so that oil inlet resistance is reduced, and oil can be fed quickly.
The stator blade 1 inclines towards the rotation direction of the rotor, the inclination angle of the stator blade 1 is 30-45 degrees, and the central axis of the oil inlet hole 2 is parallel to the direction of the stator blade 1. In this embodiment, the central axis of inlet port is located the ascending central plane of oil inlet blade thickness direction.
The oil discharge hole 3 is located at the joint of the root of the stator blade 1 and the bottom surface of the stator 8, the bottom surface of the stator 8 is the surface of the stator with the blades arranged on the front surface, and the central axis of the oil discharge hole 3 is parallel to the direction of the stator blade 1 corresponding to the position of the oil discharge hole. Along with the rotation of the rotor, the entering oil is thrown to the edge of the impeller under the action of centrifugal force and is discharged, so that the resistance of oil discharge is reduced, and the oil needs to be rapidly fed and discharged during hydraulic braking.
Preferably, the angle of inclination of the stator blade 1 is 45 degrees.
As shown in fig. 4, a hydraulic brake includes a rotor 5 and any one of the hydraulic brake stators 8 according to the present invention, and a plurality of rotor blades 6 are provided on the rotor 5. The inclination directions and the inclination angles of the rotor blades 6 and the stator blades 1 are the same, the inclination angle of the stator blade 1 refers to the angle between the stator blade 1 and the bottom surface of the stator, and the inclination angle of the rotor blade 6 refers to the angle between the rotor blade 6 and the bottom surface of the rotor. The present embodiment combines the inlet-outlet pressure difference of the hydraulic brake and the structural design parameters of the rotor and the blades, so that the ratio of the vortex speed to the peripheral speed of the rotor 5 in the hydraulic brake is about 3: 1.
As shown in fig. 5, the back of the rotor 5 is provided with auxiliary blades 7, and the auxiliary blades 7 are rib-shaped protrusions. The extension line of the central shaft of the auxiliary blade 7 is tangent with the inner hole edge of the rotor 5. The auxiliary blade 7 generates an axial force opposite to the rotor blade when the rotor rotates, and balances the axial force inside the hydraulic brake.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a hydraulic brake stator, includes stator body and a plurality of stator blade of setting on stator body, be equipped with inlet port and oil drain hole on the stator, its characterized in that: the oil inlet hole extends from the back surface of the stator to the front surface of the stator through the inside of the stator blade, and the oil discharge hole is formed in the edge of the stator.
2. The hydrodynamic brake stator as defined in claim 1, wherein: the plurality of stator blades are divided into conventional blades and oil inlet blades, the oil inlet hole penetrates through the inside of the oil inlet blade, and the thickness of the part, provided with the oil inlet hole, of the oil inlet blade is larger than that of the conventional blades.
3. The hydrodynamic brake stator as defined in claim 2, wherein: the middle of the edge of the oil inlet blade is recessed inwards to form an oil inlet hole end face, the oil inlet hole end face is perpendicular to the oil inlet blade, and the oil inlet hole extends to the oil inlet hole end face from the back face of the stator.
4. A hydrodynamic brake stator as claimed in any one of claims 1 to 3 wherein: the stator blades incline towards the rotating direction of the rotor, the inclination angle of the stator blades is 30-45 degrees, and the central axis of the oil inlet hole is parallel to the direction of the stator blades.
5. The hydrodynamic brake stator as defined in claim 4, wherein: the oil discharge hole is positioned at the joint of the root of the stator blade and the bottom surface of the stator, and the central axis of the oil discharge hole is parallel to the direction of the corresponding stator blade.
6. The hydrodynamic brake stator as defined in claim 4, wherein: the angle of inclination of the stator vanes is 45 degrees.
7. A hydraulic brake, characterized by: comprising a rotor with a plurality of rotor blades and a hydrodynamic brake stator according to any of claims 1 to 6.
8. A hydraulic brake as defined in claim 7, wherein: the inclination direction and the inclination angle of the rotor blade and the stator blade are the same.
9. A hydraulic brake as defined in claim 8, wherein: the back of the rotor is provided with auxiliary blades which are strip-shaped rib-shaped bulges.
10. A hydraulic brake as defined in claim 9, wherein: the extension line of the central shaft of the auxiliary blade is tangent to the edge of the inner hole of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451297.8A CN111255829A (en) | 2018-11-30 | 2018-11-30 | Hydraulic brake stator and hydraulic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451297.8A CN111255829A (en) | 2018-11-30 | 2018-11-30 | Hydraulic brake stator and hydraulic brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111255829A true CN111255829A (en) | 2020-06-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811451297.8A Pending CN111255829A (en) | 2018-11-30 | 2018-11-30 | Hydraulic brake stator and hydraulic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111255829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664590A (en) * | 2020-12-17 | 2021-04-16 | 中国北方车辆研究所 | Hydraulic retarder driving wheel blade with oil passage and design method thereof |
-
2018
- 2018-11-30 CN CN201811451297.8A patent/CN111255829A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664590A (en) * | 2020-12-17 | 2021-04-16 | 中国北方车辆研究所 | Hydraulic retarder driving wheel blade with oil passage and design method thereof |
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