DE6929032U - ESPECIALLY HIKING EXTENSION ELEMENT PROVIDED WITH A DISPOSAL SIGN FOR MINING UNDERGROUND OPERATIONS - Google Patents

Description

PATENT LAWYERS

Dipl.-ING. BUSCHHOFF Dipl.-Ing. Vollbach DIPL.-ING. HENNICKE

5 COLOGNE / RH.

KAISER WILHELM RING 2 *

13.6.69Vo / W _:

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Westfaiia Ironworks Union, Wethmar near Lünen

In. , special off-road hiking Extension element for underground mining operations

The invention relates to a moving expansion element with min ~ at least one hydraulic ram inserted between the cap and the base> which is coupled to the cap and the sole piece in such a way that it can be moved from a position in which he is inclined with his head to the offset, can be pivoted with the cap into a position in which he is inclined with his head towards the working face, wherein the support element can be moved back by means of a rear cylinder.

Expansion elements of this or a similar type are known.

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An example is a spreading device for conveyors known in underground mining operations where a Spreading ram on a sliding shoe connected to the conveyor, is articulated in such a way that it can be moved from a position in which he is inclined with his head towards the offset side, can be swiveled into a position, in which his head is tilted towards the mining face. The spreading ram remains while the conveyor is moving and thus braced between hanging and lying walls during its pivoting movement, with an elastic resilience of the hydraulic ram is achieved via a hydraulic pressure accumulator.

Also known is a wandering expansion element, in which on two pairs of stamps are hinged to a hanging rail. The hydraulic rams of one pair of rams are located each in their right bank position, while the hydraulic rams of the other pair of rams are at an angle to the working face or are inclined towards the offset space. XTo move the extension element, the inclined stamps pushed in, with their footplates lifting themselves from the lying person, so that they are hanging on the hanging rail being held. Then these stamps are swiveled and braced again against the hanging and lying walls, that their heads are tilted towards the offset space. The other two stamps are now inserted and lifted off from the lying person with their footplates,

whereupon the inclined stamps swiveled in such a way by shifting the hanging rail in sight of the working face that they are inclined in the end position with their punch heads towards the working face * Then are inserted and hanging on the hanging rail Caps back in the banked position.

The main object of the invention is to provide a wandering expansion element, which is expediently shielded with an offset or the like. is provided to be prepared in structurally simple catfish so that an effective support of the hanging wall can be achieved with it, especially in the area of the excavation joint. The pre-pledging cap should be able to be pushed into the pre-pledging position as soon as possible after the hanging wall has been exposed in the extraction field and expediently also under load.

The expansion element according to the invention is characterized by the fact that between the stamp and the sole piece or a » support bearing connected to it, a support and pre-Pfändzyliadea which swivels the stamp with respect to the sole piece and thereby brings the pre-pledged cap into pre- pledging position. as * is ordered.

It is advisable to assign a dosing device to control the cylinder stroke »au ** to the stock and pre-deposit cylinders. It is thus possible to use the Soharenkweg de »stamp * and thus the amount by which the pre-pledged cap vo3? §Eecho" ben.

becomes »the respective" operational conditions accordingly to control and above all to adapt to the different seam thicknesses. This offers the possibility with changing seam thicknesses to maintain a predetermined feed path of the pre-pledging cap, that when the seam thickness increases, the stroke of the supporting and pre-depositing cylinder by means of the metering device is correspondingly the increase in the pivot lever arm is reduced, while with a decrease in the seam thickness and the like Reduction of the swivel lever arm, the cylinder stroke is increased via the metering device.

On the other hand, according to a further feature of the invention, the point of application of the support and pre-deposit cylinder can also be used be adjustable on the punch in the longitudinal direction of the punch, which can be achieved in a structurally simple manner in that said cylinder is attached to one of the Stamp movable sleeve od., Like. attacks »In this Case can be from a metered loading of the support and pre-deposit cylinder and accordingly from a control the same, depending on the seam thickness, since the pivoting path of the ram and thus the Influence the feed path of the pre-pledging cap by changing the position of attack of the pivot cylinder on the punch leaves.

As mentioned, the expansion element according to the invention is given expediently an offset plate or the like., which the offset

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or the fracture area shields from the face area «Ber Ver ~ eaijzschild let preferably consist of several parts, whereby the plate-shaped Sohildteile with each other and with the cap or the sole piece are articulated. Structurally In this case, an arrangement is particularly advantageous in which a Kou-Bole protruding from the base piece on the offset side od, like. arranged against which the Base piece coupled shield part in the pivoting end position, in which the cap is fully pre-pledged, supports. The console can also be the support bearing of the support and pre-pledge cylinder being.

In the case of the expansion element according to the invention, the pre-pledging cap can expediently be attached while maintaining the pressure. Bring the hanging wall into the pre-pledging position without the entire expansion element having to be moved. This enables an effective interception of the hanging wall, in particular when, for example, the upper bank of the coal seam is first extracted by means of a roller cutting machine. Due to the inclined position of the ram against the working joint, it is possible to introduce the supporting forces into the hanging wall in such a way that it is also absorbed ± m area of the working joint with relatively high supporting forces. As well as pushing the cap forward into the pre-pledging position, the removal or the base section can also be made up while maintaining the support load of the punch. The actual catching up or backing up the expansion can be done

by means of a special return device, preferably a Rüokzyllnders reach which is ι mounted on the expansion element and on a fixed abutment, including _t at a front of the

Removal joint moved conveyor or an adjacent extension element attacks the same design, as is known per se. There is the possibility of adding two or more frame-like expansion elements to an expansion frame connect that via a rear cylinder to the face conveyor is coupled. On the other hand, two or more adjacent expansion elements can also be closed via a rear cylinder be coupled to an expansion team in such a way * that the Expansion elements of the team in successive steps and let them back with mutual support. The connection between extension frames and extension spans is general known.

According to a further embodiment, the inventive Expansion element in the reverse direction one behind the other two or more hydraulic rams, which in known Way with the sole rail and a cap articulated and jointly in the bank-right plane in the aforementioned Way are pivotable, with at least one of these stamps a supporting and pre-pledging cylinder is assigned. Advantageous is in particular a design in which two punches standing one behind the other via a swivel coupling or the like. in style of are coupled by parallelogram links, with only the pull one of these stamps a support and pre-pledging cylinder

is arranged, while the other stamp of the former Stamp is taken along with its pivoting movement.

In the drawing are exemplary embodiments of the invention shown .. It show:

Fig. 1 in cross section through a longwall a support element according to the invention in side view;

Fig. 2 in the view according to Fig, 1 with the expansion element Kapp advanced in the new pre-pledging position;

Fig. 3 the expansion element according to Flg. 1 and 2 in one According to. Line III-III of Fig. 1;

Fig. 4 shows a further embodiment of the invention Expansion element in rare view.

In the drawing, 1 denotes the excavation face of a seam * _f 2 the hanging wall, 5 denotes the horizontal and 4 denotes the offset or fracture area. In front of the working face 1 is a chain scraper conveyor, whose conveyor trough bears the reference number 5 in an edgy manner. At or on the conveyor chute 5, a mining machine, for example a planer or a cutting machine ¹ · can be guided along the working face 1, which extracts the coal at the working face 1 and feeds it to the conveyor 5 for removal.

The extension element consists of a base piece in the form of a sleeper 6, which is pulled up like a runner at the front at 7, as well as an underpinning the hanging wall 2 Cap 8, which is designed as a pre-pledging cap, i.e. for

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Mining joint 1 protrudes over the conveyor 5 so that they the hanging wall is supported on its entire exposed area, between the working face 1 and the offset space 4-. A hydraulic ram 9 is arranged between the sleeper 6 and the cap 8. The cylindrical lower punch 9 'is connected to the sleeper 6 at the foot via a joint 10, the joint axis of which is parallel to the longitudinal direction of the conveyor 5 runs. Correspondingly, the piston-like, hydraulically extendable upper part 9 " connected to the cap 8 via a joint (not shown), the joint axis of which is parallel to the joint axis of the Joint 10 runs.

The expansion element has an offset shield, which consists of the two plate-shaped shield parts 11 and 12, which are connected approximately halfway up between the hanging wall 2 and the horizontal wall 3 via © in joint 15, the joint axis of which runs parallel to the joint axis 10. The upper shield part 11 is via a joint 15 with the rear End of the cap 8 connected, while the lower shield part 12 via a hinge 14 with the rear end the Llegendßchwelle 6 is coupled. It will be based on this Way formed a roof-shaped Vexsatzschild, which shields the longwall area over the entire seam thickness from the offset or fracture area 4- and which extends through Swiveling the shield parts can adapt to changing seam thicknesses.

At the lying threshold 6 there is an upstanding one on the offset side Console 16 is arranged on which a hydraulic support and pre-pledging cylinder 18 "is articulated at 17, the piston rod of which 19 "at 20 articulated to a cuff 21 is. The cuff 21 is on the cylindrical lower temple 9 'of the hydraulic ram 9 displaceable in the longitudinal direction and in de? The respective shift position e.g. can be fixed by clamping.

Fig. 1 shows the expansion element in its basic position. The punch 9 is arranged at an angle to the bank-right position so that that it is inclined with its punch head towards the offset space 4 is. The pre-pledging cap 8 protruding over the conveyor 5 underpins the hanging wall essentially over the entire face width. If now the upper bench 1 '(Fig. 2) of the Seams won, which can be done e.g. with a roller cutting machine can reach, so can the hanging wall in the area the exposed hanging wall can be intercepted immediately after the mining machine has passed by that the support and pre-deposit cylinder 18 is acted upon by the hydraulic pressure medium. When the piston rod 19 is pushed out, it pivots the punch 9 from the position shown in FIG. 1 into the position according to FIG. 2, in which his head is inclined towards the working face 1. During this pivoting process, the cap is in the pre-pledge division according to FIG. 2 pushed.

It can also be seen that when swiveling the punch 9 and when the cap 8 is advanced, the hydraulic ram does not

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absolutely needs to be relieved of pressure. That I however, when the stamp is pivoted from the position 1 in the position shown in FIG. 2, the stamp first pushes in until the right bank position is reached and then pushes out again when pivoting further, it is necessary that the ram pressure chamber is connected to a pressure line is connected, into which the vsr urged when inserting Hydraulic fluid can escape and from the

Ejection of the stamp, the pressure fluid flows back into the stamp pressure chamber. Is particularly useful an arrangement in which the ram pressure chamber in the cylindrical lower ram 9 '&& has a hydropneumatic pressure accumulator is connected, as is known per se.

When the pre-pledging cap 8 is pushed from the position according to FIG. 1 into the pre-pledging position according to FIG. 2, the result is a pivoting of the shield parts 11 and 12, but the shielding of the face area over the entire seam thickness preserved. In the pivoting end position, i.e. after reaching the maximum feed path of the pre-pledging cap 8 the lower shield part 12 comes into abutment against the Hüokenflache the console 16, whereby a further pivoting of the ram and a further advance of the cap 8 over the in Fig. 2 end position shown also be blocked.

the drawing can be seen that the pivot angle and thus the feed path of the cap 8 is dependent on tone the extension path of the cylinder 18 and its point of attack

on the stamp. With greater seam thickness, the feed path of the cap 8 is the same with the extension of the Cylinder 18 and unchanged attack point of the cylinder larger on the punch than with a smaller seam thickness, since in this case the pivot lever arm on the punch 9 and accordingly the pivoting path is greater that the punch head covers when the support and pre-pledging cylinder is pushed out. By changing the point of attack of the cylinder 18 on the

Stamp what you see by sliding the sleeve 21 on

■ the stamp can be easily reached, the measure

which the pre-pledging cap is advanced can be changed. This, in turn, offers the possibility of all in a longwall at lateral intervals next to each other erected support elements regardless of fluctuations in the Adjust the seam thickness so that the pre-pledging step of all expansion elements is the same.

The same result could also be achieved in that the extension path of the cylinder 18 by means of a metering device in adaptation to the seam thickness and to the desired Pre-pledge step is controlled. Such control devices with metered pressurization of hydraulic Cylinders are known and therefore do not need to be described in more detail.

From Figs. 1 and 2 it can be seen that in the

the basic position of the expansion of the cylinder 18 approximately horizontal eh *

is arranged between the punch 9 and the abutment 16 »

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while the cylinder is in the operating position according to FIG. 2 is inclined obliquely to the horizontal, so that the force exerted by the cylinder is also a horizontal component has, which seeks to advance the cap 8, and on the other hand a vertical component in the sense of a Promotion of the cap S against the hanging wall is effective.

Back of the expansion element can be effected 22 whose piston rod is articulated to the conveying trough 5 at 23 'by means of a special return cylinder by ejection of the piston rod of the face conveyor, after cross obtaining the sub-bank of the seam 5 are displaced transversely to its longitudinal direction, whereupon the then by reverse Druckbeaufsehlagung double-acting rear cylinder of the expansion or its lying threshold 6 is made up. The expansion moves back from the position shown in FIG. 2 to the basic position shown in FIG. 1. Bs understand that the back can also be carried out under load, so that the hanging wall is effectively supported at all times.

As Fig. 3 shows, two similar expansion elements, which correspond to those according to FIGS. 1 and 2, Be connected to an extension book via crossbars or the like, expediently spring leaves 24. The rear cylinder 22 is located here between the two expansion elements in special bearings of the crossbars. Since they combined to form an extension book Extension elements are moved in a closed step backwards according to the progressive cutting,

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"The offset shields H ₉ 12 do not need to be subdivided. Rather, the Veraat21 shield 11 and 12 in this case can be given a width that is equal to the total width of the extension frame.

»4 shows an embodiment in which two hydraulic |

1 stamp are arranged one behind the other in Rückrichtimg. The two punches 9a and 9b are here also articulated to the common sleeper 6 so that Bie in the above in connection with the Pig. 1 and 2 described manner can be pivoted. The same applies to I.

the connection of the punch heads with the cap, which is formed in several parts here. The cap parts 8a and 8b are connected to one another in the middle between the two stamps via a joint 80. The rear cap part 8b supported by the punch 9b has an offset shield 25 on the offset side. The lying sleeper 6 is raised at the rear at 6 ¹ , with the support and pre-pledging cylinder 18 being articulated at the upper end of this raised part. The piston rod of this cylinder engages a clamp or sleeve 21 of the punch 9b, as mentioned above in connection with FIGS. 1 and 2.

The two stamps 9a and 9b are via articulated pressure arms 26 or the like. coupled together so that they are when the cylinder 18 is pushed out and when the expansion is back by means of the (not shown) rear cylinder 22 are pivoted parallel to each other. The way this swivel device works

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The rest of the processing corresponds to that of FIG. 1 to 3 illustrated embodiments. A change in the deposit step can also be achieved here by means of metered amounts Actuation of the cylinder 18 or reach d & duroh, that between the. Stamping switched on pressure organs od, the like. by means of the "two cuffs 21 in Steaapellängsriohtung adjusted. Of course, there is also the possibility of using awel or more such extension frames to be combined into a support frame or via rear cylinders to form an extension team.

Claims (10)

- 15 - ρ »· Claims 1. Wandering expansion element with at least one hydraulic ram connected between the cap and sole piece. Which is articulately coupled to the kappa and the sole piece so that it is tilted from a position in which it is inclined with a head towards the offset, taking the cap with it is pivotable into a position in which it is inclined with ssinem head towards the working face, wobai the expansion element by means of a rear cylinder or the like. is relocatable, characterized in that between the punch (9) and the base piece (6) or a ^{support bearing (6 1} , 16) connected to it, a support and pre-pledging cylinder (18) which swivels the punch relative to the base piece and thereby brings the pre-pledging cap into pre-pledging position ) is arranged, 2. Expansion element according to claim 1, characterized in that the support and pre-deposit cylinder (18) has a metering device is assigned to control the cylinder extension. 3. Extensions Ir βent according to claim 1, characterized in that the point of application of the support and pre-pledging cylinder (18) on the punch (9) eats adjustable in the longitudinal direction of the punch. 4 * expansion element according to claim 3i, characterized in that the supporting and pre-depositing cylinder (18) engages a sleeve (21) which can be displaced on the punch. 5 »Extension element according to one of claims 1 to 4 ·, characterized in that 29032 ⁶ " - 16 - indicates that there is a well-known catfish " ^s has. 6. Expansion element according to claim 5 »characterized in that the shield is constructed in several parts and the shield part (11, 12) with each other and old of the cap (8) "or the Are articulated * 7. expansion element according to claim 6, characterized in that a protruding wall or on the offset side of the base piece Console (16) or the like. is arranged against which the shield part (12) coupled to the base piece in the pivoting end position, in which the cap is fully pre-pledged «abstütsrb, the console or the like. expedient at the same time, the support bearing the support and pre-pawn cylinder (18) forms. 8. Axis component according to one of claims 1 to 7, characterized in that it is in a known manner via the Bückylinder (22) with the strut before dismantling © £ (l) lisgsndsn conveyor (5) and / or an adjacent expansion element of the same design is coupled. 9 «expansion elements: .o according to one of claims 1 to 8, characterized in that that it has two hydraulic rams (9a, 9b) one behind the other in the reverse direction, both of which are known Way with the sole rail (6) and a cap (8a, 8b) articulated and jointly in the right bank level are pivotable, at least one of these stamps Support and pre-deposit cylinder (18) is assigned. - 17 - 10. AusTauelement according to claim 9, characterized in that the one behind the other standing stamps (9 & »9b) over a Swivel coupling (26) in the manner of parallelogram links are coupled, with only one of these stamps being assigned a supporting and pre-depositing cylinder (18). υ υ ο%