DE102009036469B3 - Pneumatic brake head for shunting and train movement, has axle, whose define deflection is carried out in two stages representing reversible switch and reversible end position with complete opening of compressed air outlet, respectively - Google Patents

Abstract

The head (1) has a metal housing with a half-coupling (5) together with a retaining clip, and an axle (3) projecting inwardly to a cylinder from a circular opening. The axle exhibits an actuation lever (4) at an external end. A groove disk is arranged at a lower end of the axle and is supported to a valve disk by an axial spring force using a compression spring. The axle is positively engaged to locking disk. A define deflection of the axle is carried out in two stages representing a reversible switch and a reversible end position with complete opening of compressed air outlet, respectively.

Description

The The invention relates to an air brake head for shunting and train travel with the function of venting the compressed air system of coupled wagons of a train to Achieving full braking in emergency or dosed Braking by manually initiating and Repeatable pressure reductions by a trigger lever the air brake head either fully open in a non-reversible end position or by means of a resettable Catching step, if necessary, escape compressed air from the compressed air circuit lets and thus the application of the brake pads to the wheels of wagons continuously amplified or by closing the Braking effect, by acting permanently on a specific Level of regulating pressure in the air circulation, again diminished. The air brake head can be connected to the clutch by a few simple steps Main air duct in usual Be recognized and secured, whereby he to his temporary position assurance, the condition to over a rope or a corresponding chain exercisable manual operation is near the wagon coupler is temporarily suspended from the hose holder.

Already At the beginning of the development of compressed air braked railway cars It was a problem between loaded and unloaded wagons adapted braking effect in shunting and / or train movements produce.

at The air brakes were added to enhance the braking force the single-chamber brake cylinders and two-chamber brake cylinders plus in Special versions - also added pressure equalization vessels.

Also about relative complicated and technically complex lever systems was for improved solutions for Brake booster searched.

following shall be exemplified in the found prior art become.

So is after AT 89083 B a device for modifying the Kunze-Knorr brake on braking in three weight levels known. The difference in the braking effect with respect to loaded and unloaded wagons is hereby adjusted by a reduction valve is integrated in a two-stage brake system and thus a three-stage deceleration is possible. The changeover of the air brake cock is usually carried out manually by hand. By the invention it should also be possible to allow an automatic and sliding transition of the braking effect between the three weight levels.

With DE 412347 A has proposed a device for increasing the braking force in the Kunze-Knorr brake. The controllable braking force in the sense of gain as well as in the sense of attenuation is achieved in a one-chamber / two-chamber brake system by a "connected via the control valve to the single-chamber brake line a container is connected, the capacity of the dead space to the second One chamber brake cylinder corresponding dimension enlarged and monitored by a switching device, which is necessarily coupled with the inevitably necessarily, ... "

In DE 636886 A For example, a brake linkage assembly for the Kunze-Knorr brake is proposed in which a single-chamber cylinder lever and a fixed-point lever are connected to each other via a connecting rod, while another rod connects a two-chamber cylinder lever and a fixed-point lever. The latter connection allows a transmission ratio to the brake booster, wherein the achievable braking force beyond that which is achievable in the interaction of one-chamber and two-chamber cylinder. The braking effect loaded wagons is then significantly increased.

DE 400560 A indicates a shunting brake. It regulates via a lever system a producible braking effect by applying a weight lever, whereby the air resistance of wagons of various design and weight is changed so that the same or almost the same running speeds are achieved. Rope or chain wheels, sitting on the axis of the weight lever, with appropriate rope or chain affect when moving the weight lever connected to the other end of this transmission means brake linkage. It is thereby brought to the moment of the weight lever corresponding force to rash.

To DE 38 11 109 A1 a shut-off valve is known as a supplement to an emergency brake valve of a rail vehicle with compressed air brake. It is located between the main line of the air brake system and the emergency brake valve. When a passenger initiates emergency braking, the emergency braking can be briefly delayed - but not reversed - until shortly before the main line is emptied by rapid filling by the driver, in order to emerge from a locally unfavorable braking situation (tunnel, bridge, etc.).

In evaluation of the already known for some time prior art, it can be shown that the claim of a metered deceleration of pushed freight or passenger carriages under was taken into account as a function of a different load weight with relatively complicated interventions in an existing compressed air brake system and until today. In order to move a pushed train unit that can only be surveyed from the driver's cab of a locomotive to its end as accurately as possible at an end point, it is therefore necessary to search for a simpler solution that is cost-effective and functions safely.

It is therefore an object of the invention, a modified air brake valve to propose in the sense of an air brake head, manually by a brake authorized (Rangierer) at the end of a train section and there to the main air line attachable and nearby a wagon coupler can be suspended on the hose holder, wherein it is the air brake head allowed, over a pivoting valve plate in combination with a release lever either in a recoverable, spring-loaded movement thrusting compressed air from the air line escape or in a non-recoverable deflection of the release lever a complete emptying the air line. The latter would a so-called "emergency braking", or mean a full stop of all the brake pads pushed wagons. The release lever should be in a safe, stable position of a shunter from a platform, over a traction device (rope, chain) can be moved.

The inventive task is solved by the patent claim 1.

The Further embodiment of the invention takes place in the claims 2 to 5th

To illustrate the invention, reference is made to the following:
The air brake head consists of a metal housing, manufactured in cast or by means of cutting shaping, which is essentially subdivided into a cylindrical part for receiving the elements for regulating the brake pressure and a part for conditioning and tensioning on a main air line. Both parts are connected via annularly mounted in the interior of the cylindrical portion of the housing bores in conjunction, wherein a mounted on a shaft grooved disc with a pressed in her pinch seal elastic material, in particular an elastomer, presses itself by spring pressure of a compression spring on an overlying valve disk. The recesses on the edge of the grooved disc make it possible, when deflecting the axle, to reduce the braking pressure in batches, with a concentric return of the axle in a vertical normal position being possible in a first deflection position. For this dosage in a first deflection position and also in another non-reversible end position - to completely evacuate the main air line - is a locking cone with spring load in operative connection with the laterally deflectable axis and groove plate. The housing of the air brake head has on the coupling half for the main brake hose to a safety lever, which is beveled on one of its longitudinal sides, for the purpose of applying an eccentric pressure force. Furthermore, located opposite the cylindrical part of the air brake head and behind the bearing of the pivotable safety lever formed from a parallel surfaces of the housing bifurcation with a final bolt, which has a unilaterally flat surface. By means of the fork and the locking / delimiting bolt, it is possible to temporarily mount the novel air brake head in the vicinity of a wagon coupler on the hose holder. At the upper end of the protruding from the housing axis, an operating lever with side holes for latching a ripcord / chain is attached, whereby from stable position and at a safe distance from a platform of Waggongs from the adjustable positions recoverable / non-recoverable axis are introduced. The non-recoverability of the axle can be achieved if the tensile force on the ripcord is above 10 kp.

Retaining rings different diameters ensure that all rotary Parts, especially those that are in the flight of the axis, their Situation can not leave.

• – durch die in der Nutenscheibe integrierten Quetschdichtung werden Vereisungen oder Verölungen vermieden,
• – Schutz vor eindringendem Staub o. ä.,
• – Gesteuerte Dosierung der Druckminimierung im Bremssystem einer geschobenen Zugsektion,
• – Bedienung der Achse innerhalb von 360° möglich,
• – unkomplizierte und sichere Montage sowie Bedienung sind gegeben.

The advantages of the invention can be described as follows:

• - By integrated in the groove disc pinch seal icing or oiling are avoided
• - protection against the ingress of dust or the like,
• Controlled metering of the pressure minimization in the braking system of a pushed pulling section,
• - operation of the axis within 360 ° possible,
• - uncomplicated and safe installation and operation are given.

The Invention will be explained in more detail with reference to an embodiment. For this purpose, the following figures are used.

1 : Overall perspective view of the air brake head

2 : Illustration of the housing

3 : Representation of the axis with attached elements

1

Air brake head

2

cylindrical housing part

3

axis

4

actuating lever

5

coupling half

6

safety lever

7

bolt with flattening

8th

ripcord

9

poetry coupling half

10

face cam

11

recess

12

valve disc

13

Seeger ring

14

O-ring

15

detent cones

16

pinch

17

compression spring

An air brake head 1 according to 1 has a compact essentially in 2 parts to be divided metal housing, for example, made of die-cast aluminum. There may be mentioned the usually existing part of a coupling half for attachment to the main air line of a railway car and a cylindrical part, which includes in particular all the movable elements for regulating the brake pressure. So are on an axis 3 on its outwardly projecting part of an actuating lever 4 and inside of the housing located portion of the axis 3 one with a circlip 13 held in position valve plate 12 , a following Nutenscheibe 10 that have a compression spring 17 with a locking cone 15 is connected, with one defined in 2 stages possible pivoting of the axis 3 given is. The pivoting is possible from any point within a circle of 360 °.

It should be said that the first defined deflection stage in the sense of a button reversible executable and the second more strongly deflected position of the axis 3 represents a reversible end position with full opening of the compressed air outlet, as here the recoverability of the compression spring 17 is no longer possible.

The groove disc 10 has recesses at the periphery of its circumference 11 with internal holes at the bottom of the cylindrical housing of the air brake head 1 are circularly mounted, are in operative connection. One in the grooved disk 10 taken in pinch seal 16 with its position in the direction of the valve disk resting on it 12 seals in concentric position the axis 3 outwards.

The air brake head 1 is temporarily suspended in the vicinity of a wagon clutch on the hose holder by means of the fork-shaped design of the housing and a pin installed there as a crosspiece and he can safely via a ripcord 8th dosed from a platform of a wagon or fully opened.

Claims (5)

Air brake head for maneuvering and train driving, consisting of a metal housing with a coupling half and circlip for attachment to a main air line of a railway car, which protrudes from a 90 ° offset to the coupling half circular opening, which continues inwardly to a cylinder an axle, the an its outer end has an operating lever for a ripcord, characterized in that at the lower end of the axis ( 3 ) a grooved disc ( 10 ) with a concentrically pressed pinch seal ( 16 ), wherein the groove disc ( 10 ) by an axially acting on it spring force by means of a compression spring ( 17 ) to an overlying valve disc ( 12 ) and the axis ( 3 ) positively in a locking cone ( 15 ), wherein it is defined deflectable in at least 2 stages, namely, takes in a first springing back into the concentric starting position and in a second enlarged lateral deflection there by means of a latch their final position. Air brake head according to claim 1, characterized in that the Nutenscheibe ( 10 ) on the side edge recesses ( 11 ) at regular intervals and when pivoting the axis ( 3 ) are in operative connection with vent holes in the interior of the housing. Air brake head according to claim 1 or 2, characterized in that by means of the two adjustable stages of pivoting the axis ( 3 ) Pressure reductions in the range of 0.5 to 1.5 bar are adjustable. Air brake head according to claim 1, characterized in that a non-reversible end position of the axle ( 3 ) by means of a pull of the ripcord ( 8th ) can be produced at a tensile force of> 10 kp. Air brake head according to claim 1, characterized in that the groove disc ( 10 ) is designed to be pivotable and rotatable on all sides.