DE6603634U - HYDRAULIC LIFTING DEVICE FOR LIFTING AN OUTLET CONVEYOR - Google Patents

Description

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PATENTANWALT BODE4033 nOSEl * POStfACfl TEL ^ FON'02102-61701 TELEX 8585166

B 1 - 616 II / Tue

BECORIT GRUBENAUSBAU GMBH Recklinghausen, Werkstättenstr. 7-13

Hydraulic lifting device for lifting a face conveyor.

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The invention relates to a hydraulic lifting device for lifting a face conveyor, whose cylinder part is fixed to "he V on page face conveyor over sin hinge _s = the pivoting of the lifting device in a plane perpendicular |

parallel Ϊ

to the conveying direction and seatewotet to the backward direction of the conveyor j permitted, and their extendable piston rod with their]

lower end via an intermediate element with a large contact surface supported on the prone »

Such lifting devices attached to the face conveyor are used! to raise the face conveyor in order to be able to quickly eliminate disturbances and those on the carbon side of the conveyor or on extraction machine guided by the conveyor to the desired position

PATENTANWALT BODE ■ 4033 HÖSEL · POSlFACn - TELEt = DN "Ö2102-61701 · TELEX 8585166

for further intervention in the coal face. In addition, the additional starting resistance caused by the accumulation of coal in the lower section can be reduced by lifting the loaded face conveyor.

According to the prior art, it has so far not been possible to advance the conveying means while the piston rod of the hydraulic lifting device remains extended. Due to the articulated fastening of the cylinder of the lifting device on the offset side of the conveyor, the lifting device would tip over when the conveyor backs towards the coal face. If, on the other hand, the lifting device is rigidly attached to the conveyor in order to prevent it from tipping over, the large frictional forces between the base of the lifting device and "people who are lying down put a lot of bending stress on the susgs = moving piston rod." This stress can cause the piston rod to bend and lead to leaks in the hydraulic lifting cylinder.

The object of the invention is therefore to fix "a hydraulic Hubverrichtung so the conveyor, that the conveyor may be advanced in the raised position, without the lifting device during the Rüekvorganges tipping or while an excessively large bending stress occurs in the extended piston rod of the lifting device.

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PATENTANWALT BODE4033 HÖSEL - POSffACrt - TELEPHONE Ό2102-61701 - TELEX 8585166

The invention relates to a hydraulic lifting device zua Lifting a face conveyor, the cylinder part of which is attached to the Offset side on the face conveyor is attached to a hinge joint that allows the lifting device to pivot in one plane

parallel perpendicular to the conveying direction and · to the reverse direction of the

Conveyor and whose extendable piston rod is supported by its lower end via an intermediate element with a large contact surface on the horizontal plane is connected to the intermediate element via a further hinge joint, the three hinge joints arranged in a triangle swiveling the τ »τ» / * Φ »* Zwigghen & igi» ntas both with respect to the

Conveyors as well as against each other in the same, perpendicular to the

parallel __
Allow the conveying direction and seaxreeiKC to the direction of the Foräecwre running plane.

In a particularly preferred embodiment of this lifting device, it is provided for support on the person lying down to train serving intermediate element as a skid, the erfindungsgenaß on the one hand articulated on the face conveyor and on the other hand articulated at the end of the piston rod of the lifting cylinder. It is also useful for the lifting device a

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PATENTANWALT BODE · 4033 HÖSEL - POSftkCn - TELER) N 'Ö2102-61701 ♦ TELEX 8585166

A mechanical device is to be provided which prevents the extended piston rod from sinking into the cylinder without the lifting device having to be constantly pressurized with pressure medium. This mechanical fixation of the piston rod in the cylinder is expediently carried out by bores in the piston rod through which a bolt can be inserted, which prevents the piston rod from sinking into the cylinder if the pressurization of the cylinder is interrupted. The bolt is secured against loss by means of a chain on the cylinder. For the supply and wastes EADERSHIP of pressure medium is the cylinder xweckEsäfiis »it a connection for a pressure medium line provided the sit ■ everal as conveyor · hefes-ti" * "2 yi3nAar> powered cooker

An embodiment of the invention is based on the following

driven lifting cylinder, 2 shows a hydraulic lifting device with

driven lifting cylinder and

Fig. 3 shows a mechanical device for setting the extended piston rod against the kiitsinkea pointing into the cylinder.

PATENTANWALT BODE 4033 HÖSEL POStfACfl TELEt = t> N'd2102-6? 701 TELEX 8585166

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m In Fig. 1, the longwall conveyor is provided with the reference numeral 1. The lifting cylinder 4, which is provided with a connecting piece 13 for the pressure medium, is attached to the face conveyor 1 via the console 2 and the hinge joint 3. The intermediate element 7, which is designed as a skid, is also attached to the face conveyor via the console 5 and the hinge joint 6. The joint 9 forms the connection between the piston rod 8 of the cylinder 4 and the skid 7.

In Fig. 2, the bores 10 in the piston rod 8 can be seen! which are used to fix the piston rod in the extended state.

The in Figures 1 and 2 and the description continuous, r movable in a plane triangular arrangement of the face ^conveyor,: lifting cylinder and skid is the particular advantage of the invention significantly ER- jj. As can be seen from the figures, the friction *! forces the piston rod of the cylinder not to bend, but essentially only to pressure. In addition, it is not possible for the cylinder to tip over towards the coal face. A relatively large contact surface of the skid on the lying person also ensures that the lifting device cannot penetrate into the lying person and that the frictional forces between the skid and the lying surface cannot become too great when moving forward, f

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PATENTANWALT BODE 4033 HÖSEL POStfACn TELE ^ t) N 02102-61701 TELEX 8585Ί66

3 shows the fixing of the extended piston rod 8 against sinking into the cylinder * »through one through one of the Bores 10 inserted bolt 11, which on the cylinder> t with the help a chain 12 is attached.

This mechanical device for fixing the piston rod against sinking into the cylinder, in connection with the common pressure medium line for several lifting devices arranged on the conveyor, offers the advantage that not every lifting device has to be equipped with a special control valve needs, and that the pressure medium application of the lifting devices can be interrupted when the individual lifting devices are set at the desired height. The mechanical fixing the piston rod is on the one hand necessary for safety reasons when repairs in the lower run of the conveyor to with Avoid leaks in the pressure medium line or the connecting pieces accidents caused by the sinking of the piston rods into the cylinders during repair work. On the other hand, the mechanical fixing of the piston rods is particularly advantageous when a certain angular position of the face conveyor to the coal face should be maintained over a larger striking length, for example to climb daa of the coal plow guided on the conveyor with particularly hard or burnt-on coal. The lifting devices

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PATENTANWALT BODE 4033 HÖSEL POST BOX TELEFON 021 (2-61701 - TELEX 8585166

are pressurized by a one-time application extended and fixed by means of the mechanical device in such a way that the conveyor is in the desired angular position occupies. The conveying means can then be advanced over a larger overall length in this angular position, which is defined once, without that the position of the conveyor must be readjusted after each return process.

Protection claims:

Claims (6)

PATENTANWALT SODE · 4033 HÖSEL.-FOSIPACH · TELEFON'02102-61701 · TELEX 8585166 B 1 - SIS - 8- Protection claims: s P-a-t - ^ - R-t-a-H-s-v-P-Q-o-h- »: v ^ 1. Hydraulic lifting device for lifting a face conveyor, whose cylinder part on the offset side on the Strefcförderer over a Hinge joint is attached, which allows the lifting device to pivot in a plane perpendicular to the conveying direction and s «ac- parallel
allowed to the rearward direction of the conveyor, and its extendable piston rod is supported with its lower end via an intermediate element with a large contact surface on the lying person, characterized in that the intermediate element (7) is attached to a hinge joint (6) on the conveyor Cl) on the offset side and the lower end of the piston rod (8) is connected to the intermediate element (7) via a further hinge joint (9), the three hinge joints (3,6,9) arranged in a triangle causing the lifting cylinder (* O and the intermediate element (7) both with respect to the conveyor (1) els as well as against each other in the same, perpendicular manner parallel
to the conveying direction and senlo »e« h * to the reverse direction of the conveyor allow plane. 2. Hydraulic lifting device according to claim 1, characterized in that the Z & ischenelesent C?) As Skid is formed. tttrieff »» PATENTANWALT BODE · 4033 HOSEt '-pOSffACfl · TElEibNiCÖi {2-6170f · TElEX 85B5150 3. Hydraulisehe lifting device according to claim 1 and 2, characterized indicates that the extended piston rod (8) by a mechanical device against sinking into the cylinder C * O can be determined. t. Hydraulic lifting device according to claims 1-3, characterized in that the piston rod Co) is provided with bores (10> through which a bolt C1) serving to fix the piston rod can be inserted. 5. Hydraulic lifting device according to claim 1 to ¹ J, dadur ch marked that the bolt <ll) against loss adttels a chain (12) on the cylinder C »O is secured. 6. Hydraulic lifting device according to claims 1-5, characterized in that the cylinder (**) with a Connection (13) is provided for a pressure medium line serving to supply several cylinders.