CN109515423B - Electromechanical brake cylinder and braking method - Google Patents
Electromechanical brake cylinder and braking method Download PDFInfo
- Publication number
- CN109515423B CN109515423B CN201811477829.5A CN201811477829A CN109515423B CN 109515423 B CN109515423 B CN 109515423B CN 201811477829 A CN201811477829 A CN 201811477829A CN 109515423 B CN109515423 B CN 109515423B
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- China
- Prior art keywords
- ball screw
- spline shaft
- notch
- nut
- motor
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000000428 dust Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
Abstract
The invention relates to the technical field of railway vehicle braking, in particular to an electromechanical brake cylinder and a braking method, wherein a connecting piece is fixedly connected with a nut, the inner side of the nut is in threaded fit with a ball screw, one end of the ball screw, which is far away from the nut, is fixedly connected with a spline shaft, a motor rotor is sleeved outside the ball screw, a rotary transformer rotor is sleeved outside the spline shaft, a motor rotor matched with the motor stator and a rotary transformer stator matched with the rotary transformer rotor are correspondingly and fixedly arranged on a shell, a force transmission plate is sleeved outside the spline shaft, the rear end of the force transmission plate is connected with a power-off brake, and an inner ring of the power-off brake is sleeved outside the spline shaft. Compared with the prior art, the invention has the advantages that: the invention has compact structure, can directly replace an air brake cylinder in the original air brake system, has high response speed, high control precision, no noise, light weight and no leakage of air and oil, and can adapt to complex electromagnetic environment.
Description
Technical Field
The invention relates to the technical field of railway vehicle braking, in particular to an electromechanical brake cylinder and a braking method.
Background
In the field of rail traffic braking, friction braking is an indispensable braking mode in a vehicle, and traditional friction braking modes comprise air braking and hydraulic braking, but the two braking systems are complex in composition, slow in system response, low in control precision, large in size and heavy in weight, noise pollution can be generated, and the problems of air leakage and oil leakage exist.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide an electromechanical brake cylinder and a braking method, which have high control precision and no leakage of air and oil.
In order to achieve the above purpose, an electromechanical brake cylinder is designed, the electromechanical brake cylinder comprises a connecting piece, a nut, a ball screw, a spline shaft and a shell, the connecting piece is fixedly connected with the nut, the inner side of the nut is in threaded fit with the ball screw, one end of the ball screw, which is far away from the nut, is fixedly connected with the spline shaft, a motor rotor is sleeved outside the ball screw, a resolver rotor is sleeved outside the spline shaft, the shell is correspondingly fixedly provided with the motor rotor matched with the motor stator and the resolver stator matched with the resolver rotor, a force transmission plate for bearing axial force is sleeved outside the spline shaft, the rear end of the force transmission plate is connected with a power-off brake, and an inner ring sleeve of the power-off brake is arranged outside the spline shaft.
The invention also has the following preferable technical scheme:
the nut keep away from the outside cover of connecting piece one end and be equipped with the direction shell, the casing front and back both sides all be equipped with the opening, the opening part detachably of one side links to each other with the direction shell, the opening part detachable of opposite side is connected with the apron.
The guide shell on install the dirt proof boot, the one end cover of dirt proof boot is located the guide shell outside, the other end cover is located the connecting piece outside.
One end of the spline shaft is provided with a groove for being matched and connected with the end part of the ball screw.
The spline shaft be close to the outside cover of ball one end and be equipped with the spline housing, motor rotor and spline housing outside be equipped with first breach and second breach respectively, first breach and second breach cooperate and constitute first recess, the casing inboard be equipped with the extension, extension one end detachable is connected with the bearing clamp plate, corresponding third breach and the fourth breach of being equipped with on bearing clamp plate and the extension, third breach and fourth breach cooperate and constitute the second recess that corresponds to the position of first recess, first recess and second recess between be connected with roller bearing.
The outer wall of the spline shaft is provided with a first step structure for limiting the spline housing.
The outer wall of the spline shaft is provided with a second step structure, two self-lubricating plates are clamped between the second step structure and the thrust plate, and a flat thrust bearing is clamped between the two self-lubricating plates.
The shell and the connecting piece are respectively provided with a mounting hole for being connected with an external device.
And the connecting piece and the mounting hole of the shell are internally provided with a wear-resistant sleeve.
The invention also designs a braking method, which comprises the following steps: the motor stator is electrified, so that the motor rotor rotates, the spline housing, the spline shaft and the ball screw are driven to rotate, the ball screw nut pair converts rotation into translation, the braking cylinder stretches out and draws back, the reaction force of the pushing force is transmitted to the force transmission plate through the connecting piece, the nut, the ball screw, the spline shaft and the plane thrust bearing when the braking cylinder stretches out, in the process, the rotary transformer measures angle data of the motor and feeds signals back to the controller of the motor, and accordingly the motor is controlled to enable the ball screw to stretch out and draw back.
Compared with the prior art, the invention has the advantages of simple and feasible combined structure, easy installation and disassembly, and the invention has the following advantages: the invention has compact structure, can directly replace an air brake cylinder in the original air brake system, has high response speed, high control precision, no noise, light weight and no leakage of air and oil, and can adapt to complex electromagnetic environment.
Drawings
Fig. 1 is a schematic structural view of an electromechanical brake cylinder of the present invention in one embodiment.
Fig. 2 is a cross-sectional view of an electromechanical brake cylinder of the present invention in one embodiment.
In the figure: 1. connector 2, dust cover 3, guide housing 4, motor stator 5, motor rotor 6, front end cap 7, second recess 8, thrust plate 9, housing 10, spanner bore 11, cover plate 12, resolver stator 13, inwardly disposed extension 14 of the housing, resolver rotor 15, flat thrust bearing 16, cross roller bearing 17, spline shaft 18, power loss brake 19, self-lubricating plate 20, first recess 21, spline housing 22, ball screw 23, nut 24, screw 25, socket 26, throat hoop 27, cable sheath.
Detailed Description
The construction and principles of such a device will be apparent to those skilled in the art from the following description of the invention taken in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the connecting piece includes a straight section and a transverse section arranged at two ends of the straight section towards the same side of the straight section, and the transverse section is provided with a mounting hole for connecting with an external device. The straight section is equipped with annular convex spacing section in the middle part to the one side direction that is equipped with the transverse section, and spacing section inboard is used for coupling nut's one end to still be equipped with the screw hole in circumference in spacing section inboard. The nut is hollow cylinder section, and the both ends of cylinder section are equipped with circumference extension, are equipped with the screw hole near circumference extension department of connecting piece one end for link to each other with the connecting piece through the screw. And a groove is also arranged at the connecting section of the connecting piece and the nut, and an O-shaped ring is arranged in the groove. The nut is internally matched with the ball screw to form a ball nut screw pair. The nut outside cover be equipped with both ends open-ended direction shell, the opening that the direction shell is close to connecting piece one end has the front end housing through the screw connection in order to realize sealing. The middle part of the guide shell is provided with an extension section outwards in the circumferential direction, and the outer end of the extension section is provided with threads which are used for being connected with the shell through threaded fit and compressing a motor stator sleeved on the outer side of the ball screw. The extension section that is equipped with outward in circumference at the direction shell middle part is close to one side of connecting piece and is connected with the one end of dirt proof boot, and the outside at the spacing section of connecting piece is connected to the other end of dirt proof boot, and the both ends of dirt proof boot are fixed through the throat hoop.
The ball screw is characterized in that the outer end of the ball screw is connected with the spline shaft, a groove is formed in one end of the spline shaft, the outer end of the ball screw can be connected in the groove through key fit, a threaded hole is formed in the end portion of the outer end of the ball screw, and the groove is formed in the other end of the spline shaft so that the connection between the spline shaft and the ball screw can be further reinforced through a screw.
The spline housing is sleeved on the outer side of the spline shaft, which is close to one end of the ball screw, and a first step structure is arranged on the outer wall of the ball screw and used for limiting the spline housing. The ball screw is characterized in that a motor rotor is sleeved outside the ball screw and is adjacent to the spline housing, the motor rotor comprises a connecting section sleeved outside the ball screw and a matching section matched with the motor stator after the connecting section extends to the outer side in the axial direction, a first notch and a second notch are correspondingly arranged outside the connecting section of the motor rotor and outside the spline housing, the first notch and the second notch are matched to form a first groove, an extending section is arranged on the inner side of the shell, one end of the extending section is detachably connected with a bearing pressing plate, a third notch and a fourth notch are correspondingly arranged on the bearing pressing plate and the extending section, the third notch and the fourth notch are matched to form a second groove corresponding to the position of the first groove, and a cross roller bearing is connected between the first groove and the second groove.
The spline shaft is sleeved with a force transfer plate, a bearing is arranged between the force transfer plate and the spline shaft, a second step structure is arranged on the outer wall of the spline shaft, two self-lubricating plates are clamped between the second step structure and the thrust plate, and a flat thrust bearing is clamped between the two self-lubricating plates. The thrust plate is fixedly connected with a power-off brake sleeved at the outer end part of the spline shaft through screw connection, namely, the outer ring of the power-off brake is fixed on the force transmission plate through screws, the inner ring is installed on the spline shaft through keys, and a retainer ring is installed at the end part of the spline shaft.
The spline shaft is characterized in that a rotary transformer rotor is further arranged on the outer side of the spline shaft, and a motor rotor matched with the motor stator and a rotary transformer stator matched with the rotary transformer rotor are correspondingly and fixedly arranged on the shell. The shell is slidably and rotatably connected with the force transmission plate. The rear end of the shell is detachably connected with a cover plate through threads, a spanner hole is drilled in the surface of the cover plate, and a rubber plug is plugged in the spanner hole. And a socket is also arranged on the shell and is used for supplying power for the rotary transformer and the motor power-off brake. The shell is also provided with a mounting hole for being connected with an external device.
In a preferred embodiment, the motor is a direct torque motor.
In a preferred embodiment, the connector and the housing have a wear sleeve mounted therein in the mounting hole.
In a preferred embodiment, the dust boot is made of rubber or synthetic material.
In a preferred embodiment, the force transfer plate and the housing are provided with a threading hole, and the threading hole is internally provided with a cable jacket.
During operation, the motor stator is electrified, so that the motor rotor rotates to drive the spline housing, the spline shaft and the ball screw to rotate, the ball screw nut pair converts rotation into translation, and accordingly the braking cylinder stretches out and draws back, in the process, the rotary transformer measures angle data of the motor and feeds signals back to the controller of the motor, and accordingly the motor is controlled to enable the ball screw to stretch out and draw back.
The brake cylinder extends out, and the reaction force of the pushing force is transmitted to the force transmission plate through the connecting piece, the nut, the ball screw, the spline shaft and the plane thrust bearing.
When the electrons are cut off, the power-off brake is also cut off at the same time, so that the transmission shaft is forced to stop rotating rapidly.
The brake cylinder of the embodiment has compact structure, light weight, good protection and high brake efficiency, and the built-in structure can adapt to complex electromagnetic environment.
Claims (7)
1. The electric mechanical brake cylinder is characterized by comprising a connecting piece, a nut, a ball screw, a spline shaft and a shell, wherein the connecting piece is fixedly connected with the nut, the inner side of the nut is in threaded fit with the ball screw, one end of the ball screw, which is far away from the nut, is fixedly connected with the spline shaft, a motor rotor is sleeved outside the ball screw, a rotary transformer rotor is sleeved outside the spline shaft, a motor stator matched with the motor rotor and a rotary transformer stator matched with the rotary transformer rotor are correspondingly and fixedly arranged on the shell, a force transmission plate for bearing axial force is sleeved outside the spline shaft, the rear end of the force transmission plate is connected with a power-losing brake, an inner ring sleeve of the power-losing brake is arranged outside the spline shaft, the outer side sleeve of the spline shaft, which is close to one end of the ball screw, is provided with a spline sleeve, the outer side of the motor rotor and the spline sleeve are correspondingly provided with a first notch and a second notch, the shell is internally provided with an extension section, one end of the extension section is correspondingly and fixedly provided with a motor stator matched with the rotary transformer rotor, one end of the extension section is correspondingly connected with a second bearing, a second bearing is correspondingly provided with a second notch, a second bearing is correspondingly arranged between the second bearing is correspondingly provided with the second notch, and a second bearing is correspondingly provided with a second notch, and a first notch is formed between the second notch, and a second notch is formed between the first notch is correspondingly, and a second notch is formed between the first notch, and a different. The motor stator is electrified, so that the motor rotor rotates, the spline housing, the spline shaft and the ball screw are driven to rotate, the ball screw nut pair converts rotation into translation, the braking cylinder stretches out and draws back, the reaction force of the pushing force is transmitted to the force transmission plate through the connecting piece, the nut, the ball screw, the spline shaft and the plane thrust bearing when the braking cylinder stretches out, in the process, the rotary transformer measures angle data of the motor and feeds signals back to the controller of the motor, and accordingly the motor is controlled to enable the ball screw to stretch out and draw back.
2. The electromechanical brake cylinder according to claim 1, wherein the nut is provided with a guide shell sleeved on the outer side of one end far away from the connecting piece, openings are formed in the front side and the rear side of the shell, the opening on one side is detachably connected with the guide shell, and a cover plate is detachably connected with the opening on the other side.
3. The electromechanical brake cylinder according to claim 2, wherein a dust cover is mounted on the guide housing, one end of the dust cover is sleeved outside the guide housing, and the other end is sleeved outside the connecting member.
4. An electromechanical brake cylinder according to claim 1, wherein one end of the spline shaft is provided with a recess for mating connection with an end of the ball screw.
5. The electromechanical brake cylinder of claim 1, wherein the outer wall of the spline shaft is provided with a first step structure for limiting the spline housing.
6. The electromechanical brake cylinder according to claim 1, wherein the housing and the connecting member are provided with mounting holes for connection with an external device, respectively.
7. The electromechanical brake cylinder of claim 6, wherein the attachment member and the mounting bore of the housing have wear sleeves mounted therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811477829.5A CN109515423B (en) | 2018-12-05 | 2018-12-05 | Electromechanical brake cylinder and braking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811477829.5A CN109515423B (en) | 2018-12-05 | 2018-12-05 | Electromechanical brake cylinder and braking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109515423A CN109515423A (en) | 2019-03-26 |
| CN109515423B true CN109515423B (en) | 2024-02-02 |
Family
ID=65794444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811477829.5A Active CN109515423B (en) | 2018-12-05 | 2018-12-05 | Electromechanical brake cylinder and braking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109515423B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911091B (en) * | 2021-10-15 | 2022-10-04 | 眉山中车制动科技股份有限公司 | Intelligent brake execution unit suitable for railway wagon |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09210170A (en) * | 1996-02-02 | 1997-08-12 | Tac Giken Kogyo:Kk | Electric cylinder |
| CN201262205Y (en) * | 2008-08-19 | 2009-06-24 | 浙江亚太机电股份有限公司 | Actuating mechanism of electronic-mechanical braking system |
| CN103192722A (en) * | 2013-04-01 | 2013-07-10 | 重庆大学 | Electronic mechanical brake |
| CN207080529U (en) * | 2017-08-08 | 2018-03-09 | 吉林大学 | A kind of self-locking electro-mechanical brake apparatus |
| CN209852286U (en) * | 2018-12-05 | 2019-12-27 | 上海六辔机电科技有限公司 | Electromechanical brake cylinder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10112570B4 (en) * | 2000-03-15 | 2007-09-06 | Hitachi, Ltd. | Electrically actuated disc brake |
| JP5413719B2 (en) * | 2009-07-31 | 2014-02-12 | 日立オートモティブシステムズ株式会社 | Electric brake device |
-
2018
- 2018-12-05 CN CN201811477829.5A patent/CN109515423B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09210170A (en) * | 1996-02-02 | 1997-08-12 | Tac Giken Kogyo:Kk | Electric cylinder |
| CN201262205Y (en) * | 2008-08-19 | 2009-06-24 | 浙江亚太机电股份有限公司 | Actuating mechanism of electronic-mechanical braking system |
| CN103192722A (en) * | 2013-04-01 | 2013-07-10 | 重庆大学 | Electronic mechanical brake |
| CN207080529U (en) * | 2017-08-08 | 2018-03-09 | 吉林大学 | A kind of self-locking electro-mechanical brake apparatus |
| CN209852286U (en) * | 2018-12-05 | 2019-12-27 | 上海六辔机电科技有限公司 | Electromechanical brake cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109515423A (en) | 2019-03-26 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200107 Address after: 200331 No. 3527, 34 South Road, Putuo District, Shanghai Applicant after: Wu Mengling Address before: 200092 Shanghai city Yangpu District Guokang Road No. 100 room 1302F Applicant before: SHANGHAI LIUPEI MECHANICAL AND ELECTRICAL TECHNOLOGY Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200520 Address after: Room 318, floor 3, building 2, yard 85, Hong'an Road, Fangshan District, Beijing 102400 Applicant after: Beijing Tianyou Xinlan High Tech Co.,Ltd. Address before: 200331 No. 3527, 34 South Road, Putuo District, Shanghai Applicant before: Wu Mengling |
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| GR01 | Patent grant |