CN115257680B - Damping type electromechanical braking unit suitable for urban rail vehicle - Google Patents

Damping type electromechanical braking unit suitable for urban rail vehicle Download PDF

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Publication number
CN115257680B
CN115257680B CN202211078002.3A CN202211078002A CN115257680B CN 115257680 B CN115257680 B CN 115257680B CN 202211078002 A CN202211078002 A CN 202211078002A CN 115257680 B CN115257680 B CN 115257680B
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China
Prior art keywords
damping
ball screw
plunger
unit
urban rail
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CN202211078002.3A
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CN115257680A (en
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马天和
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Ma Tianhe
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention discloses a vibration reduction type electromechanical brake unit suitable for urban rail vehicles, which comprises a torque motor, a ball screw, a brake shoe and a vibration reduction unit, wherein a rotor of the torque motor is sleeved on the outer side of a nut at one end of the ball screw; compared with the prior art, the invention does not need an air path element, is safer and more reliable, improves the anti-flutter capacity of the ball screw, reduces the influence of disturbance and greatly prolongs the service life of equipment.

Description

Damping type electromechanical braking unit suitable for urban rail vehicle
Technical Field
The invention relates to the technical field of rail transit braking, in particular to a vibration reduction type electromechanical braking unit suitable for urban rail vehicles.
Background
In the technical field of rail traffic braking, friction braking is taken as a safe braking mode, which is an indispensable braking mode of a vehicle, and the traditional friction braking mode comprises air braking and hydraulic braking, but the braking systems of the two braking have the problems of slow system response, low control precision, large volume, heavy weight, easy air leakage, oil leakage and the like; the existing urban rail vehicles have short station intervals and a large number of stations, and when the vehicles run, the rapid and frequent braking is required, so that the braking system is required to have excellent control precision and high safety and reliability, which cannot be met by the traditional friction braking.
In order to solve the technical problems, the electromechanical brake is the first choice for urban rail transit, compared with the traditional braking modes such as air brake and the like, the electromechanical brake can be integrated, miniaturized and light, the position of the ball screw in the brake cylinder can be controlled accurately, so that a brake shoe and a tread cannot be attached too tightly, the electromechanical brake is easily disturbed by external rails in the running process of the urban rail vehicle, the disturbance force generated by the disturbance is mainly transmitted through a primary suspension system and a secondary suspension system, the brake unit connected to the running part of the vehicle is influenced by vibration impact, when the vehicle is in running and is subjected to the external rail disturbance load, the disturbance is transmitted to a bogie through a series of suspensions during the running, the brake execution unit is connected with the bogie, the brake shoe is mutually extruded and rubbed with the wheels during the braking, the working environment is harsh, the random vibration in the running environment is one of main factors causing component loss, and the fatigue phenomenon caused by random vibration is quite common in the rail transit field, especially in the frame, the wheels and the vehicle body.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides an vibration reduction type electromechanical brake unit suitable for urban rail vehicles.
In order to achieve the above purpose, the vibration reduction type electromechanical brake unit suitable for urban rail vehicles comprises a torque motor, a ball screw, a brake shoe and a vibration reduction unit, wherein a rotor of the torque motor is sleeved on the outer side of a nut at one end of the ball screw, the other end of the ball screw is connected with a brake head of the brake shoe through a connecting piece, the vibration reduction unit is arranged in the ball screw close to the brake shoe end and comprises a built-in vibration reduction block, damping liquid is filled around the vibration reduction block, and two ends of the vibration reduction block and two ends of the damping liquid are connected through an annular rubber ring respectively.
The invention also comprises the following preferable technical scheme:
Further, the damping unit also include holding screw, plunger and pad, one side of damping piece is equipped with the pad, and the pad is connected with plunger one end, and the plunger top passes through the holding screw to be connected, and the opposite side of damping piece is connected with the connecting piece.
Further, the set screw, plunger and pad are used to adjust the radial stiffness of the annular rubber.
Further, the vibration reduction block is made of high-density materials, including high-density alloy tungsten-based alloy, and the density is 16.0 g/cm 3～18.5 g/cm3.
Further, the damping liquid adopts high-viscosity fluid or solid-liquid mixture, and comprises dimethyl silicone oil.
Compared with the prior art, the invention has the advantages that:
1. the electromechanical brake unit does not need an air path element, is safer and more reliable, is simpler and more compact in the whole structure, and saves the installation space;
2. the unique design of the built-in screw rod vibration reduction unit ensures that the screw rod has stronger anti-vibration capability, reduces the influence of disturbance and prolongs the service life of equipment;
3. the invention has higher brake control precision and quicker response time.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of the vibration damping unit of the present invention.
Fig. 3 is a schematic diagram of the working principle of the present invention.
In the figure: 1. the hydraulic damping device comprises a torque motor 2, a ball screw 3, a damping unit 4, a brake shoe 5, a wheel tread 6, set screws 7, a plunger 8, a cushion 9, a damping block 10, an annular rubber ring 11, a rubber sealing ring B12, a connecting piece 13, a rubber sealing ring A14 and damping fluid.
Detailed Description
The present invention will be further described with reference to the accompanying drawings for a better understanding of the present invention to those skilled in the art.
Referring to fig. 1 and 2, the invention discloses a vibration reduction type electromechanical brake unit suitable for urban rail vehicles, which comprises a torque motor 1, a ball screw 2, a vibration reduction unit 3 and a brake shoe 4, wherein a rotor of the torque motor 1 is sleeved on the outer side of a nut at one end of the ball screw 2, the other end of the ball screw 2 is connected with a brake head of the brake shoe 4 through a connecting piece 12, the vibration reduction unit 1 is arranged in the ball screw 2 near the end of the brake shoe 4, and the whole electromechanical brake unit can accurately control the moving position of the ball screw 2 so that the brake shoe 4 and a wheel tread 5 cannot be attached too tightly.
Referring to fig. 2, the damping unit 3 of the invention comprises a set screw 6, a plunger 7, a pad 8, a damping block 9, annular rubber 10, a rubber seal ring B11, a rubber seal ring a13 and damping fluid 14, wherein the damping block 9 is arranged inside the damping unit 3, the damping fluid 14 is filled around the damping block 9, two ends of the damping block 9 and the damping fluid 14 are respectively connected through an annular rubber ring 10, one side of the damping block 9 is provided with the pad 8, the pad 8 is connected with one end of the plunger 7, the top of the plunger 7 is connected with the other side of the damping block 9 through the set screw 6, the other side of the damping block 9 is connected with a connecting piece 12, the plunger 7 is also provided with the rubber seal ring a, and the connecting piece 12 is provided with the rubber seal ring B, wherein the set screw 6, the plunger 7 and the pad 8 are used for adjusting radial rigidity of the annular rubber 10.
The working principle of the vibration damping type electromechanical brake unit and the vibration damping principle of the vibration damping unit according to the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 3, the working principle of the vibration damping type electromechanical brake unit of the present invention is as follows: after the vehicle sends a braking command, the motor control unit receives the braking command and converts the braking command into a control signal of the torque motor 1, so that the torque motor 1 is powered on, the motor rotor rotates to output torque to enable the nut to rotate, the nut drives the ball screw 2 to rotate through the ball, the ball screw 2 converts the rotary motion into axial translation, and then drives the connecting piece 12 to push out, braking pushing force is generated, the brake shoe 4 is enabled to be abutted against wheels, brake shoe pressure and friction force are generated, braking force is finally generated by means of the adhesion relation of the wheel and the rail, and the speed reduction of the vehicle is realized.
With continued reference to fig. 2, the damping unit of the invention is based on the damping principle that the damping blocks 9 are connected through the annular rubber rings 10, when the ball screw 2 vibrates vertically, the damping blocks 9 in the damping unit can swing vertically to balance interference force, so that kinetic energy of the ball screw 2 is consumed, the damping liquid 14 is forced to vibrate, and viscous force in the damping unit also applies work to consume energy, so that vibration condition of the ball screw 2 is reduced.
The above description is only specific to the embodiments of the invention, but the scope of the invention is not limited thereto, and any person skilled in the art who is skilled in the art to which the invention pertains shall apply to the technical solution and the novel concept according to the invention, and shall all be covered by the scope of the invention.

Claims (3)

1. The utility model provides a damping type electromechanical brake unit suitable for urban rail vehicle, includes torque motor, ball screw and brake shoe, the rotor that has torque motor is sheathe in to the nut outside of ball screw one end, and the other end of ball screw passes through the connecting piece and links to each other with the brake head of brake shoe, its characterized in that still includes
The damping unit is arranged in the ball screw close to the brake shoe end, the damping unit comprises a built-in damping block, damping liquid is filled around the damping block, two ends of the damping block and the damping liquid are respectively connected through an annular rubber ring, the damping unit further comprises a set screw, a plunger and a pad, one side of the damping block is provided with the pad, the pad is connected with one end of the plunger, the top of the plunger is connected with the top of the plunger through the set screw, the other side of the damping block is connected with a connecting piece, and the set screw, the plunger and the pad are used for adjusting radial rigidity of the annular rubber.
2. An electro-mechanical brake unit for urban rail vehicles of the vibration damping type according to claim 1, wherein said vibration damping blocks are made of a high density material, including a high density alloy tungsten-based alloy, having a density of 16.0 g/cm 3～18.5 g/cm3.
3. An electro-mechanical brake unit for urban rail vehicles of the vibration damping type according to claim 1, wherein said damping fluid is a fluid or solid-liquid mixture of high viscosity, including simethicone.
CN202211078002.3A 2022-09-05 2022-09-05 Damping type electromechanical braking unit suitable for urban rail vehicle Active CN115257680B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211078002.3A CN115257680B (en) 2022-09-05 2022-09-05 Damping type electromechanical braking unit suitable for urban rail vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211078002.3A CN115257680B (en) 2022-09-05 2022-09-05 Damping type electromechanical braking unit suitable for urban rail vehicle

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CN115257680B true CN115257680B (en) 2024-04-16

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CN111908297A (en) * 2020-08-12 2020-11-10 安徽理工大学 Monitoring system of disc brake of elevator
CN112211929A (en) * 2020-10-13 2021-01-12 晋江凯燕新材料科技有限公司 Braking system for braking when difference between disc surface and edge surface occurs
CN112576678A (en) * 2019-09-27 2021-03-30 中国电力科学研究院有限公司 Vertical shock absorber and method for determining quality of damping liquid medium in vertical shock absorber
CN112849197A (en) * 2021-03-18 2021-05-28 北京天佑新辔高新技术有限公司 Electromechanical tread braking device
CN112943602A (en) * 2021-04-15 2021-06-11 珠海格力节能环保制冷技术研究中心有限公司 Vibration damper, compressor and air conditioner
CN113119677A (en) * 2021-05-21 2021-07-16 山东交通学院 Four-wheel self-leveling vibration-damping orchard operation chassis and leveling vibration-damping method thereof
CN113294485A (en) * 2021-05-27 2021-08-24 株洲时代瑞唯减振装备有限公司 Rubber pile embeds vertical hydraulic damping device
CN113294482A (en) * 2021-05-27 2021-08-24 株洲时代瑞唯减振装备有限公司 Rubber pile with built-in vertical shock absorber
CN113309803A (en) * 2021-07-08 2021-08-27 安徽理工大学 Normally closed electromechanical disc brake
CN214465739U (en) * 2021-03-22 2021-10-22 华东交通大学 Electronic mechanical brake device with magnetorheological fluid clutch
CN113734126A (en) * 2020-05-29 2021-12-03 比亚迪股份有限公司 Braking device and vehicle
CN113761658A (en) * 2021-09-01 2021-12-07 江苏大学扬州(江都)新能源汽车产业研究所 Optimized matching method for stiffness damping characteristics of vehicle air suspension
CN113895476A (en) * 2021-09-29 2022-01-07 中车南京浦镇车辆有限公司 Parking brake control method for electromechanical brake system of urban rail vehicle
CN215567492U (en) * 2021-09-01 2022-01-18 江苏恒鑫润翔机电制造有限公司 Remote controllable actuator
CN216994283U (en) * 2021-11-13 2022-07-19 苏州众宝行汽车有限公司 Storage device for automobile brake fluid
CN114771489A (en) * 2022-04-02 2022-07-22 北汽福田汽车股份有限公司 Brake hydraulic pipeline, brake hydraulic system and vehicle
CN217130200U (en) * 2022-03-28 2022-08-05 广州华侨振动控制科技有限公司 Vibration isolation device for controlling vibration transmission

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JPH0742770A (en) * 1993-08-05 1995-02-10 Toyota Motor Corp Disk brake unit
JPH08238915A (en) * 1995-03-06 1996-09-17 Nippondenso Co Ltd Vehicle body behavior controller
JP2004011825A (en) * 2002-06-10 2004-01-15 Kayaba Ind Co Ltd Electromagnetic shock absorber
CN2631879Y (en) * 2003-06-10 2004-08-11 浙江春晖智能控制股份有限公司 Normal close solenoid for anti-block brake system of vehicle
CN1899902A (en) * 2006-07-19 2007-01-24 中国南车集团眉山车辆厂 Quick railway goods train bogie
JP4088802B1 (en) * 2007-04-05 2008-05-21 功 松野 Brake device for vehicle
CN101386295A (en) * 2007-09-14 2009-03-18 株式会社日立制作所 Apparatus for and method of controlling brakes
CN102837689A (en) * 2011-06-24 2012-12-26 株式会社爱德克斯 Brake fluid pressure control device
CN104709254A (en) * 2013-12-12 2015-06-17 罗伯特·博世有限公司 Slip-controlled hydraulic vehicle brake system and combination of a pressure vibration damper and a check valve for such vehicle brake system
CN103921637A (en) * 2014-04-29 2014-07-16 重庆大学 Inner vibration absorbing device of high-speed electric wheel and electric wheel
CN104864004A (en) * 2015-05-28 2015-08-26 浙江大学台州研究院 Automobile electronic mechanical brake and braking method thereof
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CN206309818U (en) * 2016-12-13 2017-07-07 唐河科林沃特环保科技有限公司 A kind of electric braker for oil pumping machine
CN106704460A (en) * 2017-02-20 2017-05-24 徐工集团工程机械有限公司 Damping device and engineering vehicle
DE102017219959A1 (en) * 2017-11-09 2019-05-09 Continental Teves Ag & Co. Ohg Electrohydraulic actuator
CN109653080A (en) * 2018-12-05 2019-04-19 江苏科技大学 Liquid quality dual-tuning vibration reduction device and its assembly method
CN110053593A (en) * 2019-04-23 2019-07-26 江苏理工学院 A kind of multiple-piece rail transit car braking system
CN110285163A (en) * 2019-07-09 2019-09-27 中车青岛四方车辆研究所有限公司 Rail vehicle brake rigging and its checking cylinder
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CN112576678A (en) * 2019-09-27 2021-03-30 中国电力科学研究院有限公司 Vertical shock absorber and method for determining quality of damping liquid medium in vertical shock absorber
CN113734126A (en) * 2020-05-29 2021-12-03 比亚迪股份有限公司 Braking device and vehicle
CN111908297A (en) * 2020-08-12 2020-11-10 安徽理工大学 Monitoring system of disc brake of elevator
CN111878540A (en) * 2020-08-25 2020-11-03 中铁二十三局集团轨道交通工程有限公司 Fastener damping pad
CN112211929A (en) * 2020-10-13 2021-01-12 晋江凯燕新材料科技有限公司 Braking system for braking when difference between disc surface and edge surface occurs
CN112849197A (en) * 2021-03-18 2021-05-28 北京天佑新辔高新技术有限公司 Electromechanical tread braking device
CN214465739U (en) * 2021-03-22 2021-10-22 华东交通大学 Electronic mechanical brake device with magnetorheological fluid clutch
CN112943602A (en) * 2021-04-15 2021-06-11 珠海格力节能环保制冷技术研究中心有限公司 Vibration damper, compressor and air conditioner
CN113119677A (en) * 2021-05-21 2021-07-16 山东交通学院 Four-wheel self-leveling vibration-damping orchard operation chassis and leveling vibration-damping method thereof
CN113294482A (en) * 2021-05-27 2021-08-24 株洲时代瑞唯减振装备有限公司 Rubber pile with built-in vertical shock absorber
CN113294485A (en) * 2021-05-27 2021-08-24 株洲时代瑞唯减振装备有限公司 Rubber pile embeds vertical hydraulic damping device
CN113309803A (en) * 2021-07-08 2021-08-27 安徽理工大学 Normally closed electromechanical disc brake
CN113761658A (en) * 2021-09-01 2021-12-07 江苏大学扬州(江都)新能源汽车产业研究所 Optimized matching method for stiffness damping characteristics of vehicle air suspension
CN215567492U (en) * 2021-09-01 2022-01-18 江苏恒鑫润翔机电制造有限公司 Remote controllable actuator
CN113895476A (en) * 2021-09-29 2022-01-07 中车南京浦镇车辆有限公司 Parking brake control method for electromechanical brake system of urban rail vehicle
CN216994283U (en) * 2021-11-13 2022-07-19 苏州众宝行汽车有限公司 Storage device for automobile brake fluid
CN217130200U (en) * 2022-03-28 2022-08-05 广州华侨振动控制科技有限公司 Vibration isolation device for controlling vibration transmission
CN114771489A (en) * 2022-04-02 2022-07-22 北汽福田汽车股份有限公司 Brake hydraulic pipeline, brake hydraulic system and vehicle

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Inventor after: Ma Tianhe

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