DD220667A1 - FLUIDICALLY OPERATED BRAKING DEVICE, ESPECIALLY FOR WORKING CYLINDERS - Google Patents

Abstract

The invention is mainly used in high-pressure pneumatics in the pressure range of 0.4-1.5 MPa. It can be used where movements of working cylinders are to be fixed and braked at previously determined points. Such requirements are placed in particular on modern machines, devices and industrial handling devices in which under complicated conditions large adjustable forces in the smallest working shifts analog or quasi analog should be transmitted. From the special requirements in the field of application also results in the objective, by providing a fluidically actuated braking device is to create that can be used in the field of high-pressure pneumatics and brings the brake elements directly to the working piston at a structurally low cost to effect. This is achieved by a fluidically acted upon brake element on the one hand in the interior of a cylinder and or on the piston and or on the piston rod of the cylinder is arranged and by the brake element on the other hand also outside the hydraulic cylinder and coupled to the piston rod. The braking device can be designed as a brake basket or as an elastic hose.

Description

The description of the invention; ..- Title of the invention

Fluidically actuated braking device, in particular for working cylinder

Field of application of the invention

The invention is applicable wherever motion sequences of working cylinders are to be fixed and braked at predetermined points. Such requirements are placed in particular on modern devices, machines, machines and industrial handling equipment in which under complicated conditions, large adjustable forces in the smallest work strokes analog or quasi analog in an intended path-time course to be transferred. "The field of application of the invention is therefore in particular in high-pressure pneumatics in the pressure range of 0.4 ^: 1.5 MPa. . ' . '''.,;'

Characteristic of the known solutions

In practice, a number of ways to slow down axially moving components are known. The many

Fifty solutions show, for example, simple mechanical brakes, electro-magnetic brakes and also pneumatic brakes. .

For example, in Patent Specification No. 67325 a brake force regulator for vehicles, especially for motor vehicles described in which the constructive and manufacturing effort, wear and susceptibility are low. This is solved by the fact that in the controller housing

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a spring-loaded, circumferentially recessed and arranged at a distance from the stepped piston valve leaflet. provided est. The low mass of the movable control parts made possible by the construction according to the invention ensures an almost inertia-free response of the controller, with the short-term dynamic wheel load displacements also being detected and taken into account during the braking process.

The Paterschrift No. 94025 describes an electropneumatic air brake, which is characterized in that in the brake valve a pressure in a Hauptluft- or

 Main container line arranged tensionable spring energy storage and that between this spring energy storage and the

Control piston a stop clutch is arranged, which couples the spring energy accumulator in the relaxation direction with the control piston in the direction of movement to open the intake valve. The piston rod is interspersed axially with a leading vent to the atmosphere.

In the patent specification 110013 is a control device for electrically controllable pressure medium brakes, in particular for rail vehicles, for supplying the pressure medium brake zuzuführender electrical digital control signals whose time

determines the operating strength of the pressure medium brake, with an arbitrarily adjustable voltage divider, characterized by a the pressure-time sequences of the pressure medium brake electrically as voltage-time sequences simulating the digital control signals or this

In the case of inequality of the two compared voltages, the output of a voltage acting in the direction of equalization on the analogue is determined by means of the electric voltage control actuated electrical analogue, an electrical voltage comparator ufixj of the analog simulated voltage

Effect digital control signal.

Patent No. 2836243 discloses an actuating cylinder with lock which effects braking by mechanically engaging in a lock. ',

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An end position braking is also in "Pneumatics in Mechanical Engineering", Verlag Technik 1955, Berlin, author: Schlicker, page 44; 97-98. The Endlagenbremsung is intended for single- and double-acting cylinder and acts in such a way that thereby braking via rubber or plastic buffer or fluidic brake piston, brake gaps, brake seals and corresponding chambers takes place as fluidic throttles. In another way, the brake release is effected in the fluidic cylinder with separate hydraulic brake cylinder by stop or by means of driver after adjustable stroke.

The devices described here have the disadvantage,. that, they are sometimes very complicated in their structural design and therefore require a lot of effort.

They also have the disadvantage that the braking is done mainly by the external attachment of additional equipment; and that they are not fluidly controllable. In automation technology, however, it is important to use the smallest possible components for the control sequences of machines, devices and industrial handling equipment. In addition, these elements must work trouble-free and maintenance-free. These requirements are not fully met by the solutions described. - '. -,. ' ..;. ·. , ,

Object of the invention

The object of the invention is to eliminate the known deficiency and to provide a fluidly actuated braking device that can be used in the field of high-pressure pneumatics and where mit.konstruktiv low effort the brake elements directly on the working piston wir-. ken. , , ''. '. , -. " '.' '.' "'. '.' . '

Explanation of the reading of the invention

The known solutions are mainly designed so that they act in cooperation with several institutions as a braking device. That means they're working on machines

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and devices must be mounted separately constructive. Thus, the application is limited to a small design space for devices, machines, machines and especially for handling equipment for automation technology. It therefore exists. Give up to create a fluidly actuated braking device that can be installed directly into the working piston even in small components of automation technology. According to the invention, this is achieved by arranging a brake element which can be loaded fluidly as an insertable brake module on the one hand inside a cylinder and / or on the piston and / or on the piston rod of the cylinder and on the other hand also arranging the brake element outside the cylinder and with the piston rod is coupled. The braking device can be closed as a ring or band or semi-open or formed as an elastic hose. /.

Ausfünrungsbeispiel

The invention will be explained in the following on a Ausführuhgsbeispiel. In the accompanying drawings -. '. demonstrate: .' / ''. . ',. - ·,. ·: - ''^; : '' .. '..

Fig. 1: Schematic representation of the many variants for the arrangement of the brake element as a brake module

Fig. 2: Schematic representation of the Bremszungejikorbes

Fig. 3: Schematic arrangement of the elastic tube as a braking element with fluidic admission from the outside or via the piston rod from the inside.

Fig. 4: Schematic representation of the constructive on-order of a brake element with pressure plate, spring and stop

Fig. 5: Schematic arrangement of the brake element outside the cylinder on the piston rod

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^. _F as illustrated schematically-in Figure 1, the Breraselement 1 can be brought in different variants constructively to the effect. The starting point is always the purpose for which the braking is intended. Pas brake element 1 can therefore be arranged on a loose in the cylinder 4 moving diaphragm cylinder 13 and are acted upon from the outside fluidly. Likewise, the attachment to the piston 2 and to the piston rod 3 is possible. The fixation effected by the braking can also be transmitted to a bar 12. The fluidically actuated braking device can be in various structures, as well as with a brake tab basket 5 (Figure 2, 3, 4). In Figure 4, the actuation of the brake shoes 8 takes place; formed as a brake shoe basket 5 of FIG. 2 - by the spring 10 via the cone 7. If the hose 6 is acted upon with compressed air, there is an immediate release of the brake.

When pressure drops in the tube 6, the brake is switched on again (safety braking)., Figure 3 shows an even simpler and the compressed air to the pressure hose 6 immediately adequate braking effect. The brake basket 5 shown in Figure 2, which may be designed as a ring or band closed or semi-open, allows for fluidic loading of Figure 3, the braking, the good system of the brake tab and the short reaction path allows immediate braking. In the process, any brake wear is absorbed by the wear-resistant brake tongues, as well as the longitudinal stability of the tongues relieves the brake hose from brake forces and shear stresses.

Claims (3)

• invention claims 1.) Fluidically actuated braking device, in particular for working cylinder, characterized in that a fluidically acted upon brake element (1), the type of a brake module, on the one hand inside a cylinder (4) and or on the piston (2) and or on a piston rod (3) 'The cylinder (4) is arranged and that the brake element (.1) on the other hand outside of the cylinder (4) and is coupled to the piston rod (3). 2.) Fluidically actuated brake device according to item 1, characterized in that the brake element (1) as Bremszuhgen-. basket, which may be designed as a ring or band closed or semi-open, is formed. 3.) fluidically actuated braking device according to item 1 and 2, characterized in that the braking element (1) is designed as an elavstischer pressure hose (6) which rests either directly to the brake, to brake tongues or a conical pressure plate (7). r η r / ιηΛΐ ^ 4 ') O Λ