DE2503765B2 - REMOVAL FRAME - Google Patents

Description

The 1 rfindiing concerns an extension frame for the * 5 underground mining operations with a cap construction, which is carried by stamps on a Sole conscription are completed, and with one Hauptk.tppe movably attached Vor and Rückpfändkappen whose pressing devices on the Cap construction are arranged.

Such an expansion frame is known (DT-OS 22 59 270). In the case of the well-known extension frame, the B / w. Return deposit caps articulated to the main cap pe connected. In detail, Vorpfändkappen and Rückpfändkappen consist of two hinged to the Main cap connected parts, with the Rückpfändkappen relatively far into the offset space should protrude in order to provide a correspondingly extensive support of the To reach hanging walls. Since the backfill material does not form any mile pile, and the Pouring cone therefore extends into the area of the sole construction on which the straightening devices for the stamps with hoses, valves, etc. are arranged to protect the straightening devices and walls or screens arranged in the support frame, which stow the backing material.

If such a support frame is used at the transition between the line and the longwall face, namely there. where the route is torn, then ^I 'ch difficulties arise, on the one hand, that the relatively long Rückpfändkappc allows a Nachreißarbeit outside of its range, and on the other hand, consist in the fact that through the still necessary walls or screens to Protection of Richtvomchtungen driving and Ma'eriahransport are significantly hindered in this area.

In addition, one knows the extension frame (DT-AS 12 34 654), in which the straightening devices at least are partially laid in the cap area. However, this does not rule out that there are still valves and Hoses are arranged in the area of the sole construction.

It is the object of the invention. facilitate the ripping / u and the resulting disabilities / u This object is achieved in that for use in a sireck to be traced in the transition The return cap is fork-shaped between a longwall and a mining section and articulated or retractable at the rear end of the main canopy and that the straightening devices for the stamps are arranged exclusively on the cap construction.

With this extension frame, if you tear. /. B. with a ripper, with the return cap in place, the hanging wall through the fork-shaped recess be ripped off. If the rock is not overly solid, so may that Rock, which is not immediately above the recess, collapse and through the recess fall down through it. If this is due to the strength or good cohesion of the Rock is not the case, the Rüekpländkappe retracted or folded down, depending on how it is constructed. Then the hanging wall that has remained standing can be torn down. DK-appropriate Areas of the hanging wall that cracks in this way result from the dimensions the Rückpfändkappc.

It is essential in this context. that During the re-tearing, the expansion in its entirety does not need to be advanced

As a result, the re-tearing machine can be as close as possible regardless of the advance of the .Ausbaues work the strut entrance. The quick and immediate tearing at the strut entrance results Other advantages. On the one hand, it is desirable to do this To give away hanging walls as quickly as possible with the final expansion of the route. It can be done this way happen. On the other hand, it is desirable that the To have accumulating rock where it is pushed into the track and / to build up of the roadside embankment can be used without having to be transported to the front for this purpose. In the case of the support frame according to the invention, the rock under the return cap can be extracted precisely there where it can be pushed laterally into the longwall. This in turn results in the advantage that the access from the route into the longwall is easier. because the line has torn further forward.

Another advantage is that walls or screens do not protect the straightening devices required are.

All easily damaged parts such as tubes, valves or the like are located under or in det Cap construction and can by nachgerisscnci falling rocks are not damaged. There are no obstructions caused by walls or umbrellas.

Appropriately, the return cap can be two on one have foldable parts, making cim further relief for re-tracing work results.

In the following, the invention is explained using an exemplary embodiment shown in the drawing it shows

F i g. 1 is a side view of an extension frame,

F i g. 2 shows a plan view of the object according to FIG. 1.

F i g. 3 a front view of the support frames according to I- "i g. 1.

F i g. 4 is a side view with partial section de Extension frame according to FIG. 1 and

F i g. 5 and 4a show the use of the extension frame according to the invention in the area of the transition

5 03

wipe a longwall and a mining route.

The support frame shown in FIGS. 1 to 4 has a cap 1. at the front end at 2n articulated a Vorpfändkappe 2 and at the Rückwärtsi like end at 3a articulated a fork-shaped extension 3 is attached, which can also serve as a Rückpiändende cap.

The cap 1 is supported by two sole rails 4 running from front to back, the front of which and rear ends resting on the lying surface are designed in the shape of a runner and on which four or more hydraulic rams 5 are arranged, which support the cap 1. The hydraulic rams 5 are from usual construction, but are arranged upside down in comparison with the usual arrangement, such that the Stempelrichtuorrichtungen, which are designated in their entirety with the reference numeral 6, of the Cap 1 and not, as usual, from the sole conscription be worn. The devices (for example Druckmiuelylinder) for adjusting and moving the Vorpfändkappe 2 and the extension 3 are also carried by the cap 1, so dall / wipe the sole rails 4 from front to back a completely unimpeded passage through the support frame is available. The passage between the sole rails 4, the Stamp 5 and the cap 1 in the direction transverse to the sole rails 4.

The lighting devices 6 (see FIG. 4) have a hollow, cylindrical shape for each hydraulic piston 5 Housing 9, which is attached to the cap 1 and at its upper end in the cap 1 with a concave-spherical bearing shell 10 for the convex-spherical upper end ti of the Stcmpel / ylinder 12 is provided. An elastically resilient ring collar 13, for example made of rubber, is on the lower linden tree arranged cylindrical housing 9 and is in this by an inner flange 14 and a plate held, which is screwed to the lower end of the housing 9.

The ring collar 13 rests firmly on the stamp cylinder 12 and is used to align and straighten the Stamp 5 when the support frame is released from the tension between hanging and lying and, if the punch 5 has previously deviated from the vertical or another desired position, for example as a result of longwall convergence or as a result of forward movements of the support frame.

The convex lower end 16 of the plunger piston 17 is mounted in a concave bearing shell 18 which is in the Sole rail 4 is arranged, and can be hingedly attached to this.

In the cap 1 cavities 19 are provided which the Hydraulic cylinder for adjusting and influencing the contact pressure of the pre-pledging cap 2 or the extension 3 serve against the hanging wall.

Each stamp 5 can be on the cap 1 or on the sole rail 4 at 20 or 21 by means of bolts or Be attached to wire ropes.

As shown in FIG. 5 shows that the absence is before. Obstacles in the area of the longwall in particular then advantages if the support frame in the transition area between line 7 and longwall 8 (at track location) is used. This is for teams and materia! the Access to the longwall in the area of the transition from the mining section to the longwall through the expansion much easier. In addition, the expansion with such expansion racks facilitates the arrangement and the Movement of mining machines and conveyors in the area of the face bar below the caps of the Extension frames, as shown in dashed lines in FIG. 5 is shown. Under certain circumstances it can Extension frame overlap and with a conveyor running between the dismantling front and the track be connected to this.

A double-acting hydraulic cylinder for advancing, shown in more detail in the drawing of the extension frame can be in the manner known from self-advancing extension columns in the Base rail 4 may be arranged or both base rails 4 may be assigned. Alternatively, the extension frame Via a chain, wire rope or other connecting means on or on the Sireb conveyor 22 Drive 23 be attached in such a way that it advances with this. If two support frames are next to each other are arranged as in FIG. 5 is shown, is preferably one of them provided with an anchoring device as used in the British Patent application 15 575/72 is described.

A flat plate or connecting rod can place the two sole rails 4 in the immediate vicinity of the sole connect with each other to connect the sole consirukiion / u to a square and the need of to eliminate two relievers.

The rear extension 3 can be arranged so that it can be drawn into the cap 1 or can be folded down into a position parallel to the stamps 5. Preferably white rear extension 3 with Absland mutually arranged parts. who it when ripping the Allow rocks to fall through. When used in low seams, the rear extension 3 may be formed in two parts which can be folded together such that the entire extension 3 can be folded down parallel to the punches 5. In the raised Position, this extension can be carried by two spaced apart, inclined stamps are arranged in a line with the sole layers 4 and as an alternative to the in the Cavity 19 arranged cylinders are used. Through this In a particularly advantageous manner, the height of the driveway remains unimpaired.

In addition 5 sheets of drawings

Claims (2)

Palent claims: 1. Support frame for underground mining operations with a cap construction carried by stamps placed on a sole construction are supported, and with fore and back pledge caps movably attached to a main cap, whose pressing devices are arranged on the cap structure, characterized in that that the Rückpfändkappe for use in a stretch to be rediscovered in the transition between a longwall and a mining stretch (3) Fork-shaped and articulated or retractable at the rear of the main canopy is arranged and that the straightening devices (6) for the punch (5) exclusively on the cap structure (1) are arranged. 2. Extension frame according to claim 1, characterized in that the return deposit cap (3) / white Has collapsible parts.