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CN119546493A - Braking system with parking brake - Google Patents

Braking system with parking brake Download PDF

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Publication number
CN119546493A
CN119546493A CN202380052788.8A CN202380052788A CN119546493A CN 119546493 A CN119546493 A CN 119546493A CN 202380052788 A CN202380052788 A CN 202380052788A CN 119546493 A CN119546493 A CN 119546493A
Authority
CN
China
Prior art keywords
brake
piston
spring
housing section
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202380052788.8A
Other languages
Chinese (zh)
Inventor
M-G·埃尔斯托尔普夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Publication of CN119546493A publication Critical patent/CN119546493A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • 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
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/04—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting directly on tread
    • 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
    • B60T13/02—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 mechanical assistance or drive
    • B60T13/04—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 mechanical assistance or drive by spring or weight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H1/00—Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
    • 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
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • 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
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F16D2121/08—Fluid pressure acting on a membrane-type actuator, e.g. for gas pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Braking Arrangements (AREA)

Abstract

A brake system with a parking brake having an axially movable piston (10) which can be acted upon by a pressure medium and is operatively connected to a brake lining (2), in particular a brake shoe, is designed in such a way that the piston (10) acts on a spring system (4) which is connected to the brake lining (2).

Description

Braking system with parking brake
Technical Field
The present invention relates to a brake system with a parking brake according to the preamble of claim 1.
Background
US 9623,855 B2 discloses such a brake system, in particular for use in a rail vehicle.
The parking brake described therein is designed such that the piston locks the service brake in the parking position.
Compared to spring-loaded brakes, in which the spring generates a parking brake force, which are likewise known from the prior art, locking the piston is disadvantageous, since the brake system as a whole is only elastic to a small extent, which in the event of a loss of travel, for example, leads to a relatively large loss of brake force due to cooling of the friction pair.
In braking systems with a brake caliper unit, this disadvantage does not occur substantially in that, due to the elasticity of the brake caliper lever, the force loss is small, at most 20%, even in the case of so-called normal travel losses.
This order of force loss also occurs in the spring-loaded parking brake known from the prior art, which is different from the parking brake known from the initially mentioned US 9623 B2, but also from the parking brake known from EP 2826 684 B1.
This is mainly because the spring loses a part of its force over time and/or has a relatively large tolerance, so that a minimum value must be taken over in designing the spring.
Furthermore, the spring has a reduced spring characteristic, i.e. the force decreases with increasing stroke. In this case, it is always necessary to start from the most disadvantageous case when designing the spring.
In particular in a brake caliper or a shoe brake, it is not possible to implement the parking brake system known from US 9623 855 B2 directly, since the entire actuator/brake disc or actuator/wheel bearing/bogie system is so rigid that the relative movements as occur during loading and unloading of the vehicle can lead to large force losses.
Disclosure of Invention
The object of the present invention is therefore to further develop a brake system of the same type in order to achieve a reliable parking brake in a structurally simple manner.
This object is achieved by a brake system having the features of claim 1.
A system is thus created which only acts as a parking brake, without affecting the function of the service brake.
As mentioned before, the force transfer member in some types of actuators, such as brake calipers or shoe brake units, is too stiff to use the brake system known from US 9623,855 B2. In contrast, the spring system according to the invention now creates a remedy. It is particularly emphasized here that the invention can be realized with only a small outlay in terms of design and manufacturing technology, which meets the requirements.
The spring system to which the axially movable piston is connected can be formed by a preloaded spring assembly which is preloaded by means of an overpressure which prevails during normal operation of the service brake, whereby an additional elasticity is created in the force flow.
The spring system is designed such that it provides a sufficient travel and is not below a minimum parking brake force.
The spring system can be configured in such a way that the compression spring, preferably a coil spring, is positioned in a telescopic housing, wherein a first housing section (on the bottom of which the compression spring is supported) is connected to a brake lining, in particular a brake shoe, and a further second housing section (on the bottom of which the other end of the compression spring is supported) can be moved relative to the first housing section by means of a piston, so that the compression spring is tensioned.
The piston acting on the second housing section is supported in a cylinder, the piston surface being able to be acted upon by a pressure medium, in particular compressed air, but also by a pressure fluid.
In principle, the spring system can also be formed by one or more spring elements, for example in the form of disk springs, which are arranged in series or in parallel as a spring stack.
Further advantageous embodiments of the invention are characterized in the dependent claims.
Drawings
An embodiment of the present invention will be described below with reference to the accompanying drawings.
The only figure shows the parking brake of the brake system according to the invention in a schematic side view.
Detailed Description
In the figures, it can be seen that for braking a wheel 1, in particular a rail vehicle wheel, a brake lining 2 is provided, which is designed as a shoe brake and can be pressed with a brake shoe 3 against the wheel 1 in the event of braking.
When the wheel 1 or the rail vehicle is in the parking position, the parking brake acts on the brake lining 2.
The parking brake has a piston 10 guided in the cylinder 9 in an axially movable manner, with a piston rod 11 and a piston face 12 which is arranged on the end face in the cylinder 9 and bears sealingly against its inner wall.
A pressure medium, preferably compressed air or a pressure fluid, can be fed via the connection 13, with which the piston surface 12 is acted upon.
At the end opposite the piston face 12, the piston rod 11 acts on a spring system 4 having a housing 5 in which a compression spring 6 in the form of a helical spring is arranged.
The housing 5 is composed of a first housing section 7 and a second housing section 8 which can be moved axially relative to the first housing section, wherein the two housing sections 7, 8 are arranged telescopically relative to one another.
The first housing section 7 is connected to the brake lining 2, while the piston rod 11 acts on the second housing section 8.
The compression spring 6 is supported with one end on the base of the first housing section 7 and with its other end on the base of the second housing section 8.
In operation, a pressure is built up on the piston 10 by the pressure medium against the piston surface 12 and the spring is tensioned by moving the second housing section 8, while at the same time the brake lining 2 is pressed against the running surface of the wheel 1.
List of reference numerals
1 Wheel
2 Brake lining
3 Brake shoe
4 Spring system
5 Shell body
6 Compression spring
7 Housing section
8 Housing sections
9 Jar
10 Piston
11 Piston rod
12 Piston face
13 Joint

Claims (9)

1.带有驻车制动器的制动系统，该驻车制动器具有能被用压力介质加载的、与制动衬片（2）、特别是制动蹄作用连接的、能轴向运动的活塞（10），其特征在于，所述活塞（10）作用在弹簧系统（4）上，该弹簧系统连接在制动衬片（2）上。1. A braking system with a parking brake having an axially movable piston (10) which can be loaded with a pressure medium and is operatively connected to a brake lining (2), in particular a brake shoe, characterized in that the piston (10) acts on a spring system (4) which is connected to the brake lining (2). 2.根据权利要求1所述的制动系统，其特征在于，所述弹簧系统（4）布置在能伸缩式移动的壳体（5）中。2 . The brake system according to claim 1 , characterized in that the spring system ( 4 ) is arranged in a telescopically movable housing ( 5 ). 3.根据权利要求1或2所述的制动系统，其特征在于，所述壳体（5）具有第一壳体部段（7）和第二壳体部段（8），该第一壳体部段和第二壳体部段能相对于彼此沿轴向移动。3 . The brake system according to claim 1 , characterized in that the housing ( 5 ) comprises a first housing section ( 7 ) and a second housing section ( 8 ), which are axially movable relative to each other. 4.根据前述权利要求之一所述的制动系统，其特征在于，在所述壳体（5）内布置有压缩弹簧（6）。4 . The brake system according to claim 1 , characterized in that a compression spring ( 6 ) is arranged in the housing ( 5 ). 5.根据前述权利要求之一所述的制动系统，其特征在于，所述压缩弹簧（6）构成为螺旋弹簧，以一个端部支撑在第一壳体部段（7）的基底上并且以其另一端部区域支撑在第二壳体部段（8）的基底上。5. The brake system according to claim 1, characterized in that the compression spring (6) is designed as a helical spring which is supported with one end on the base of the first housing section (7) and with its other end region on the base of the second housing section (8). 6.根据前述权利要求之一所述的制动系统，其特征在于，所述第一壳体部段7连接在制动衬片（2）上。6 . The brake system according to claim 1 , characterized in that the first housing section 7 is connected to the brake lining ( 2 ). 7.根据前述权利要求之一所述的制动系统，其特征在于，所述活塞（10）具有与第二壳体部段（8）相连接的活塞杆（11），该活塞杆在另一端部上设有活塞面（12）。7 . The brake system according to claim 1 , characterized in that the piston ( 10 ) has a piston rod ( 11 ) which is connected to the second housing portion ( 8 ) and which is provided with a piston surface ( 12 ) at the other end. 8.根据前述权利要求之一所述的制动系统，其特征在于，所述活塞（10）在缸（9）中被引导，其中，所述活塞面（12）密封地贴靠在缸（9）的内壁上。8. The brake system as claimed in claim 1, characterized in that the piston (10) is guided in a cylinder (9), wherein the piston surface (12) bears sealingly against an inner wall of the cylinder (9). 9.根据前述权利要求之一所述的制动系统，其特征在于，所述缸（9）具有用于压力介质的接头（13）。9 . The brake system as claimed in claim 1 , characterized in that the cylinder ( 9 ) has a connection ( 13 ) for a pressure medium.
CN202380052788.8A 2022-09-01 2023-08-08 Braking system with parking brake Pending CN119546493A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102022122146.6A DE102022122146A1 (en) 2022-09-01 2022-09-01 Braking system with a parking brake
DE102022122146.6 2022-09-01
PCT/EP2023/071936 WO2024046718A1 (en) 2022-09-01 2023-08-08 Braking system having a parking brake

Publications (1)

Publication Number Publication Date
CN119546493A true CN119546493A (en) 2025-02-28

Family

ID=87695985

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202380052788.8A Pending CN119546493A (en) 2022-09-01 2023-08-08 Braking system with parking brake

Country Status (3)

Country Link
CN (1) CN119546493A (en)
DE (1) DE102022122146A1 (en)
WO (1) WO2024046718A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011713C2 (en) * 1980-03-26 1982-11-11 Knorr-Bremse GmbH, 8000 München Brake cylinders for friction brakes in vehicles, in particular rail vehicles
DE3912037A1 (en) * 1989-04-12 1990-10-25 Knorr Bremse Ag BRAKE CYLINDER FOR VEHICLES, IN PARTICULAR RAIL VEHICLES
US9623855B2 (en) 2004-01-08 2017-04-18 New York Air Brake Llc Parking brake system including a brake cylinder
JP4084767B2 (en) * 2004-03-26 2008-04-30 本田技研工業株式会社 Parking brake device
WO2014042031A1 (en) * 2012-09-12 2014-03-20 ナブテスコ株式会社 Manual release device for parking brake, brake cylinder device, and brake device
DE102012018144A1 (en) * 2012-09-14 2014-03-20 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Actuator for a functional unit of a motor vehicle
FR3008669B1 (en) * 2013-07-17 2015-08-28 Faiveley Transp Amiens RAILWAY BRAKING SYSTEM FOR A RAILWAY VEHICLE AND METHOD OF BRAKING A RAILWAY VEHICLE COMPRISING SUCH A SYSTEM
FR3008668B1 (en) 2013-07-17 2015-09-04 Faiveley Transp Amiens RAIL BRAKING SYSTEM AND METHOD OF BRAKING A RAILWAY VEHICLE COMPRISING SUCH A SYSTEM

Also Published As

Publication number Publication date
WO2024046718A1 (en) 2024-03-07
DE102022122146A1 (en) 2024-03-07

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