DE2004180B2 - Wandering longwall mining - Google Patents

Description

^Gnmdteü

Longwall construction “after the demands 1 and 2, characterized in that the connections (23, 24) between the spacers (22, 22 α) and the expansion elements raumeelenkie are executed

⁸ Tw-SE ^ KLaW according to one or more of claims 1 to 3, characterized in that one (27) of the spacers carries at its end a curved sliding plate (25) which is hinged to the associated expansion element and is attached to the adjacent expansion element! supports.

The invention relates to a wandering south-facing building with a plurality of panels arranged next to one another components, in which several piston-cylinder units between each two adjacent expansion elements are arranged as a spacer.

In a longwall structure of the type mentioned according to the state of the art (German Auslegeschrift 1236 451), two piston cylinder units are arranged between the caps and the base rails of the adjacent extension elements, which run parallel to each other and _h aia'.lel to the hanging wall or to the lying surface. When using a total of four spacers, it is difficult to properly fix the spatial position of the extension element released from the bracing against the adjacent extension element remaining in the bracing. With a four-point support, which is also statically indeterminate, as it were. namely, the position of the advancing add-on element released from the tension is already based on three support points depending on the extension length of the individual spacers, whereby it is not determined at which three of the four support points this orientation ring takes place. Each time the spatial position of the supported expansion element is adjusted, several spacers must be changed in length, which can cause difficulties in terms of control technology.

It is therefore the object of the invention to develop the longwall construction of the type mentioned at the beginning in such a way that that the spatial position of each advancing, laterally supported by the spacers Expansion element is precisely and clearly definable and by adjusting only one spacer is changeable.

The invention proposes to solve this problem

By
ter way

to provide in front of three spacers, the articulation of which is arranged on the corners of dirt

is particularly advantageous

at spacers - ^ _{the - ^ VQr} .

Stress relieved expansion ^^^^ ΓDistribution * the spatial elements tell. ^ ur e

Location of the

without

their extension length

this is necessary

Loading of the individual spacers can be precisely determined in advance.
To lateral

ao mente through Vei _

to compensate for the holder, two of the spacers are in a * ■ ** —- ^j: - ^: ~ ·· "» '
allele to the base part c

The connections between the spacers and the expansion elements are expediently designed in a space-articulated manner. In this way are Gelenkbewegun _o -u between the spacers and the expansion elements possible in all directions.

One of the spacers expediently carries a curved sliding plate at its end, which is attached to the associated Expansion element is articulated and yich supported on the adjacent expansion element. The extension length of this spacer needs during the Advancing not to be changed.

Two example embodiments of the subject matter of the invention are set out below Hand of the drawing explained in more detail in the

Fig. 1 shows an expansion element according to a first Embodiment in side view,

F i g. 2 is a rear view of several of the in FIG. 1 g. 2 expansion elements shown,

FIG. 3 shows a plan view of several of the elements shown in FIG. 1 expansion elements shown,

4 shows an expansion element according to a second Embodiment in side view,

F i g. 5 is a rear view of several of the FIGS. ί shown expansion elements and

Fig. 6 shows a plan view of a plurality of expansion elements shown in FIG. T.
Each of the expansion elements shown in FIGS. 1, 2 and 3 has a lower part 10 in which a pair of punches 11 on the offset side and a pair of punches 12 on the dismantling joint side are fastened.

Furthermore, a doppelwir kender hydraulic return cylinder 13 is fixed in the lower part 10, de

is articulated to the lower part 10 and mi

attacks its free end on the face conveyor C. The water double-acting hydraulic return cylinder i;

is used in a manner known per se to advance the face conveyor ur.d for subsequent drawing hen the expansion element.

On the offset-side pair of punches 11 is a

the hanging wall supporting cap 14 is arranged

while ^ on the punch pair 1 on the working face side; an abbaustoßseitäge cap 15 rests in Rieh cantilevered onto the working face.

The connection between the stamps 10, 1 and the lower part 10 on the one hand and the caps l

3 4

rjzw. 15, on the other hand, element can be used via bearing devices if this is the result of the bracing between

take place, which is solved in a known manner seen in a plane hanging and lying. This is

leiikig or designed as a spherical bearing. of particular advantage if the extension elements

The rear cap 14 and the mining butt end cap 15, which is used in a longwall with a steep incline, are articulated to one another at 16.
bound. _{Each laundri} h _{rend of} advancing and setting out

The joint 16 is spanned by a Blaitfederpackage 17 of the bracing between the hanging wall and the bed, the ends of which are pressed from below against the detached extension element is pressed by the cap or caps 14 or 15, as shown at 18 and 19 adjacent, remaining in the bracing . ₁₀ expansion elements on the cylinder 22, 22 a in the

The leaf spring assembly 17 is held in the correct position with the pivot pin,

of the joint 16 is connected via a bracket 20, which The cylinders 22 can also be used for

has a part 21 which encompasses the central part of the blade and the advancing expansion element by a

the spring package. agreed amount to move sideways to one

The leaf spring package 17 acts to move the downward displacement of a possibly occurred

Compensate set-side or mining joint-side cap 14 or or several expansion elements.

15, which, for example, under the action of the Die in Fi g. 4,5 and 6 shown execution

Shifts in the hanging wall can occur, there are many different forms of the subject matter of the invention

It is also used for the most resilient possible consideration of the described on the basis of Figs. 1, 2 and 3.

carrying loads from one of the caps to 20 adjacent embodiment similar, so that for each other

the other parts and thus also the same parts for uniform load use the same reference numerals

Distribution to the stamps 11 and 12 and the subordination. The difference between the two versions

Part 10. forms consists in that one of the laterally

The lower parts 10 and the caps 15 of adjacent mobile spacers form a curved sliding plate 25 Expansion elements are connected to one another by spacer sharks which, as shown at 26, are articulated on one ter connected, the attached as hydraulic cylinders 22 and 22 α side of the lower part of each expansion element are trained. The cylinder part of each hydraulic cylinder and the one on the lower part of the adjacent Auslinders is with one of the adjacent expansion element or with one of the sliding elements attached to it connected, as shown at 23, while plate 25 a is supported.

its piston rod with the other of the loaded 30 Each slide plate 25 is equipped with a hydraulic cylinder

adjacent expansion elements is connected, as provided in the 28, with the help of which they are laterally

24 is shown. The links 23 and 24 are pivoted and can be determined

executed in a space-articulated manner. The sliding plates 25 are not only used for guidance

Preferably, the lower pair of cylinders 22 are in the expansion elements during advancement and

Height of the upper edge of the lower part 10 of the expansion 35 to prevent lateral sliding in the direction

element arranged to which it is attached. the tendency to strive; you can use the hy-

It should be emphasized in particular that the articulation hydraulic cylinders 27 are also adjusted in such a way that each

points 23 and 24 of the cylinders 22 and 22 α and the required corrective movement are executed

Piston rods relative to each other on the tips can. The common use of the hydraulic

of a triangle are arranged, the cylinder22 in Fig. 1 40 and that through the hydraulic cylinder27

is shown in phantom. adjustable sliding plate 25 makes it possible also in

If the support elements are in a line very steeply sloping struts a considerable force

are, the cylinders 22 and 22 α run parallel to the expansion elements for their displacement from

to each other and essentially parallel to the longwall practice,

conveyor C or to the longitudinal direction. ₄₅ The arrangements described make it possible.

The cylinders 22 and 22 α are used due to their that the expansion elements as required in a simple manner Triangle arrangement not only for keeping the distance from each other and the requirements of the between adjacent expansion elements, but aligned and prevent the strut course accordingly the lateral tilting of the extension can also be pushed.

For this purpose 2 sheets of drawings

Claims (2)

Patent claims: 1. Migrating longwall construction with several supporting elements arranged next to one another, at the several piston-cylinder units as spacers between each two adjacent expansion elements are arranged, marked by three spacers (22; 22a; 27), the articulation points of which are relative to one another sina arranged at the corners of a triangle. 2. Wandering longwall construction according to claim 1.