DE102018208688A1 - Sanding plant with a setting device for the conveyor - Google Patents

Abstract

Sanding system of a vehicle, in particular of a rail vehicle, which has at least one container for spreading material, at least one conveying device (10), and at least one metering device, wherein the conveying device (10) has at least two conveyors (12, 14) and at least one setting device (2), which is designed to switch the spreading material between the conveyors (12, 14) has, with which the spreading material is accurately and safely controlled and clogging of a conveyor is avoidable.

Description

The present invention relates to a sanding system of a vehicle, in particular a rail vehicle, to control the dosage of grit or sand in both directions accurately and safely despite a reduction in the number of components of the sanding plant.

Sanding systems are used in rail vehicles to increase a static friction between wheels and rails, especially when the transmission of starting and braking forces from the wheels to the rail by z. As dirt, ice, autumn leaves and moisture on the rails is sensitive.

A conventional sanding plant has at least one container or a sandbox, with a dosage of the material to be spread by a rotatable vertical cellular wheel, or by a solenoid or a pneumatic dosing device, and located in the sandbox grit if necessary, possibly with the support of Compressed air is conveyed or blown between the wheels and the rails.

Until now, one problem with sanding systems was that efficient sanding with precise metering was only possible in one sanding direction, or in two directions (travel directions) only with two sand boxes, two metering units and two conveyors. The resulting duplicate equipment consumes more space, increases maintenance and is more expensive. In addition, a problem arose that with not equally frequent sandings in both directions, the grit in the less frequently used direction condensed and a sanding was no longer possible thereafter.

A sanding system according to the patent application with the publication number EP2379394A1 has disclosed solutions to the above-mentioned problems, but focused on reducing the required components, ie, only one metering device for two conveyors is provided in a sandbox to sand in two directions. However, it could not be ensured that only one of the two conveyors was operated (ie the grit came only in one of the two conveyors), which consequently could reach the grit also in the non-operated conveyor, which could lead to clogging of the conveyors.

The invention is therefore based on the object to provide a sanding plant, in which the dosage of grit for both directions of travel can be accurately and safely controlled despite reducing the number of components of the sanding plant.

This object is achieved with a sanding system according to claim 1. Advantageous embodiments of the invention are contained in the subclaims.

According to the invention, the solution to the problem in a sanding plant, which has at least one container for grit. In the container there are provided a conveying device, which is pneumatically operated, and a metering device, which is configured to dose and provide a spreading material. Furthermore, the conveyor device is provided to transport the grit provided by the metering device. The metering device is configured so that metering is effected by a rotatable vertical cellular wheel, a solenoid or a pneumatic control. The conveyor device includes at least two compressed air connections, at least two delivery lines, at least two conveyors, and at least one adjustment device configured to switch the spreading material between the conveyors. Volumes of voids formed by the adjuster and conveyors may be arbitrarily adjusted, preferably by the position of the adjuster.

The adjustment means is preferably constructed as a flap, the adjustment means preferably being able to assume three positions, namely a left position, on which the conveyor 1 is active, a legal position on which the promoter 2 is active, and a center position on which the two conveyors are active. Preferably, the adjustment means may be configured to be continuously switchable between the conveyors to divide the volumes of the voids at any ratio. Furthermore, the adjuster may be constructed to be switched between the two conveyors during the sanding operation to produce a pulsatile sanding.

The switching between the conveyors is preferably carried out by a pneumatic control of a shaft which determines a position of the adjusting device. The pneumatic control can be done from both sides to adjust the position of the shaft accordingly (i.e., a movement to the left or right).

Furthermore, in particular in this case (ie with the shaft), the conveying device can be designed to ensure that air is first applied to the desired conveyor before the adjusting device (in this case of the Wave) is switched (ie with a certain time offset).

In an alternative embodiment, the conveyor may be configured so that air is first applied to the desired conveyor after the adjuster is switched, or that the two actions are simultaneously actuated.

In a further embodiment, a return spring for the adjusting device is provided to hold the adjusting in a preferred position and to change the position of the adjusting device by means of pneumatic control, which is particularly advantageous when a preferred direction of sanding exists.

Preferably, a motor, an electromagnet or a rotary magnet can be provided in the sanding plant to allow the control of the adjustment.

Alternatively, a pinch valve may be provided for the adjustment device in the sanding plant, with the pinch valve being configured to close one of the two conveyors by pneumatic activation.

In the following an embodiment of the invention will be explained in more detail with reference to FIGS.

• 1 eine Querschnittansicht einer Fördereinrichtung einer Sandungsanlage gemäß eines Ausführungsbeispiels der vorliegenden Erfindung.
• 2 eine Perspektivansicht der Fördereinrichtung der 1.
• 3 eine Unteransicht der Fördereinrichtung der 1.
• 4 eine Frontansicht der Fördereinrichtung der 1.

It shows:

• 1 a cross-sectional view of a conveyor of a sanding plant according to an embodiment of the present invention.
• 2 a perspective view of the conveyor of the 1 ,
• 3 a bottom view of the conveyor of 1 ,
• 4 a front view of the conveyor of the 1 ,

1 shows a cross-sectional view of a conveyor 10 a sanding plant according to an embodiment of the present invention.

In the conveyor 10 are two sponsors 12 and 14 arranged at a certain angle to each other, the two conveyors 12 and 14 one cavity each 16 respectively. 18 form. An adjustment device 2 in a form of a flap is placed in the middle and constructed to be over a shaft 4 , which is pneumatically operated via a piston to assume three positions, ie left, right and center. In the 1 and 2 is the center position of the adjuster 2 shown. A grit is metered by a metering device (not shown) and the cavities 16 and 18 from the openings of the cavities 16 and 18 fed in the middle position, for example, in a balanced ratio.

A compressed air connection 6 of the conveyor 12 is provided to the spreading material in the cavity 16 via a connection 20 to blow through to a delivery line (not shown).

A compressed air connection 8th of the conveyor 14 is provided to the spreading material in the cavity 18 via a connection 22 to blow through to a delivery line (not shown).

The connections 20 and 22 are arranged in two opposite directions so that they can promote the grit each for a direction of travel.

With the center position of the adjustment 2 , as in 1 and 2 shown, the same amount of grit in the conveyor 12 and 14 delivered by the metering device. If the adjustment 2 assumes a left position becomes only the sponsor 14 supplied with the grit, which is intended for one direction of travel, and on the other hand, if the adjuster 2 takes a legal position becomes only the sponsor 12 supplied with the grit, which is intended for a different direction of travel.

By this construction, it is ensured that the grit is fed only to the conveyor, where the grit is actually needed. Thus, clogging can be effectively avoided.

Depending on the design, the conveyors can be at different angles to each other in order to use the available space optimally and efficiently. Or, if it is appropriate for the requirement, they may also be arranged in the same direction, even if they serve different directions of travel.

LIST OF REFERENCE NUMBERS

2

adjustment

4

wave

6, 8

Compressed air connection

10

Conveyor

12, 14

promoter

16, 18

cavity

20, 22

Connection for a delivery line

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2379394 A1 [0005]

Claims (14)

Sanding installation for a vehicle, comprising at least one grit container, at least one conveyor device (10) which is pneumatically actuated and configured to transport the grit, at least one metering device configured to dispense the grit and the conveyor device (10). 10), the conveyor device (10) having at least two conveyors (12, 14), characterized in that the two conveyors (12, 14) form a cavity in which at least one adjustment device (2) is provided, wherein the adjusting device (2) is configured to distribute the amount of grit between the conveyors (12, 14) and to control the quantitative ratio. Sanding plant after Claim 1 in that the adjusting device (2) is designed as a flap which subdivides the cavity into two cavities (16, 18) and adjusts the volumes as a function of the flap position. Sanding plant after Claim 1 or 2 wherein the adjusting device (2) is configured to assume three positions: left, right, and center, wherein in the left and right positions only one conveyor is supplied with grit, while in the center position both conveyors are supplied with grit. Sanding plant after Claim 1 or 2 wherein the adjusting means (2) is configured to be switched between the conveyors. Sanding plant after Claim 1 or 2 wherein the adjusting device (2) is configured so that it can be continuously switched between the conveyors. Sanding plant according to one of the preceding claims, comprising a shaft (4), wherein the adjusting device (2) is configured to be pneumatically actuated by the shaft (4). Sanding plant after Claim 6 wherein an actuation of the shaft (4) is configured to occur from both sides to adjust a position of the shaft (4), whereby the shaft can turn to the left or right. Sanding plant according to one of the preceding claims, wherein the conveying device (10) is configured so that first air is applied to a desired conveyor before the setting device (2) is switched. Sanding plant after one of the Claims 1 to 7 wherein the conveyor (10) is configured to first apply air to the desired conveyor after the adjuster is switched or to simultaneously actuate the two actions. Sanding plant according to one of the preceding claims, wherein the adjusting device (2) comprises a return spring, which is provided to hold the adjusting device (2) in a preferred position, and a pneumatic control is provided, which is configured, the position of the adjusting device to change. Sanding plant according to one of the preceding claims, wherein a motor, a solenoid or a rotary magnet is provided, which is configured to allow the activation of the adjusting device (2). Sanding plant according to one of the preceding claims, wherein the adjusting device (2) is provided in the form of a pinch valve, wherein the pinch valve is configured to close a conveyor (12 or 14). Sanding installation for a vehicle according to one of the preceding claims, wherein the conveyors (12, 14) can be arranged at different angles to one another. Sanding plant for a vehicle according to one of the Claims 1 to 12 wherein the conveyors (12, 14) can be arranged in the same direction.

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