DE2033807A1 - Method and device for the mining of minerals stored in the shape of a float - Google Patents

Description

GW 2132

Patent application

the lirma

Trade union Eisenhütte Westfalia, 4-628 Wethmar near Lünen

Procedure. and device for mining minerals stored in seams

The application of the developed for the coal industry fully mechanical longwall mining on Mcht coal minerals so far this has only been possible in a few cases. This is especially true for the extraction of ores, which are often too hard to be handled by a peeling or cutting mining machine to be released from the mine face.

The object of the invention is to provide a method for mining of minerals stored in flözariaLg, especially copper shale, in underground mining by peeling or cutting To create extraction that enables the benefits a fully mechanical extraction now also with other as hard coal deposits. According to the method according to the invention, this object is achieved in that & the mining shock heats up (e.g. in the case of copper shale to a very high temperature) and then the mineral from the heated ** Shock is released. The high heating of the mining impact results in tensions or expansion cracks in the mineral which it is sufficient for mechanical extraction is loosened and released from its tension.

The high level of heating of the mining shock requires numerous measures on the mechanical equipment required for the dismantling process to run smoothly.

10S88S / 06S4

GW 2-22

Accordingly, the invention relates to a device that the the special conditions occurring when the mining impact is heated.

The device for carrying out the method mentioned consists in the usual way of a face conveyor on which a mining machine pulled by an endless chain is guided as well as from with the conveyor via return cylinder connected extension frame equipped with hydraulic rams en. The device according to the invention is characterized in that it is movable for heating the mining impact mounted heating elements are provided, which are in guides between an advanced position in which they are are close to the working face and about halfway up the face, and can be moved in a retracted position, in which one is required for driving the extraction machine Release the alley at the joint. In this way it is achieved that the mining thrust needed to maintain the required temperature is to be constantly supplied with heat, is constantly heated in its entire length. Because it it is necessary for this to bring the heating elements in question as close as possible to the joint, here they are but the path of movement of the mining machine traveling along the joint block, it is thus ensured that only those heating elements are withdrawn which the mining machine is just moving past. As soon as the extraction machine has moved on, the heating elements advanced again against the joint.

To achieve a fully automatic process, the dismantling process it is provided that each heating element is connected to a drive and that the drives individually or in groups depending on the movement of the extraction machine can be switched on in such a way that, viewed in the direction of movement of the mining machine, those located close to it Heating elements, take their retracted position and

109885/0664 _ ₃ _

return to its advanced position after the mining machine has passed.

It is expedient that each. Heating element can be switched to two heat levels, with the switching automatically in Dependence on the distance between the heating element and the working joint takes place in such a way that the heating element in the advanced position to the higher and in the retracted position is switched to the lower heat setting * ■ This On the one hand, energy is saved, because the The heat given off by the withdrawn heating elements does not affect the working face, but on the other hand it is the full Switching off the heating elements and thus avoiding excessive intermediate cooling. *

Because of the high temperatures that occur in the face care must be taken that the movable heating elements are reliably guided and their mobility is not affected by heat-related deformation of the guide parts.

In an expedient embodiment of the invention, it is provided for this that each heating element in rail-shaped guides arranged at right angles to the working face with the aid of two hydraulic cylinders is movable.

So that the heating elements are as close as possible to the working face are brought up, but without touching this, but it is to be expected that the joint is irregular, the heating elements leading and moving facilities with a sufficient. Lift reserve provided, which makes it possible not to exceed what is to be expected Measure recessed dismantling joint part to move the heating element (s) into the immediate vicinity of the joint. There the stroke in the direction of the working face for the heating elements

GW 2132

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of the above-mentioned irregularities of the impeller course is, each heating element has on its end face protruding feelers, which when in contact with the Cut off the drive for the forward movement «,

As the invention further suggests, each guide for a heating element is arranged on one of a parallelogram Existing handlebars through a hydraulic. Cylinder attached to and from the working joint pivotable frame. In this way it is achieved that when the heating elements are withdrawn, not only these themselves, but also also move their guides back to clear the space required for the mining machine to pass.,

It is particularly expedient that the link (s) on the working joint side of the pivotable frame is longer than the or »the" limbs on the rock face are designed in this way that the heating elements with On their guides when they are withdrawn, they cover a backward, upward arc-shaped 1 «g, and thereby the tree available above the conveyor is enlarged «

This is necessary because it is difficult to solve minerals to be extracted are particularly difficult and therefore a lot of tree-demanding harvesting machines can be used

It is useful here to use a plow as a mining machine which is guided on an angle rail (plow bed) arranged on the conveyor face on the excavation face and engages under a guide provided on the conveyor face with a claw or the like the purpose _{9 of} preventing the planer from cutting too deep or too high into the excavation joint.

GW 2132

For minerals that are particularly difficult to obtain, a standard one is sufficient Do not plan. It is therefore also provided that the planer is provided with an unbalance drive that it in the set in vibrations on the horizontal plane. With such a so-called activated planer, it is necessary to supply the unbalance drive with energy. Is the imbalance drive with Equipped with an electric motor, the planer has a conveyor overfeeding cantilever, the one with facilities for power take-off of busbars attached to the conveyor on the mountain side Is provided.

The use of an activated planer requires a number of measures to prevent the transmission of undesired vibrations to prevent the other facilities.

In connection with the power supply to the planer, it is advisable to that on the ridge side on the conveyor an open to the ridge side, the busbars contained channel is attached, on which a The carriage dragged along by the boom is guided, In the channel with busbars there is a movable carriage (current collector carriage) arranged, which carries the sliding contacts. The connection between the carriage in the channel and the slide on the channel seen via a driver attached to the slide, which in turn is connected to an arm of the pantograph trolley protruding from the channel. ^

By subdividing the assemblies involved in the power supply, it is thus possible to switch between the boom and cchv / Lnp-youth damping elements, e.g. damping springs, to proceed between the carriage and between the carriage and the carriage. :

So that any movements of the planer about a horizontal axis parallel to the working face do not affect the Injection, bunion affect the power supply, the boom engages telescopically oeiblich in the slide, - whereby the damping Lemonbo are effectively formed in the longitudinal direction of the longwall face.

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GW 2132

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With regard to the special conditions, namely working in great heat and using an activated Planes, as well as the peculiarities of the minerals to be extracted, are also on the conveyor opposite the Previously customary designs, changes required.

S-o is provided that the angle rail leading the planer ■ (planer bed) is arranged offset from the working face side wall of the conveyor to the working face and to the horizontal and that between the vertical leg of the angle rail and the Conveyor side wall vertical standing plates (ribs) extending transversely to the conveyor are provided, two of which are attached to the Ends of. Angle rails are hinged by bolts to the brackets attached to the conveyor side wall, wherein the standing plates are connected above the conveyor side wall by a guide tube, which the planer on the conveyor side with the Guide claw grasped. The standing plates are in the part adjacent to the vertical leg of the angle rail for formation a canal through the longitudinal direction to receive the Cut out the back of the pull chain for the plane. The one on this The chain channel formed in this way is covered by a hinged cover.

To adapt to any irregularities that may occur in the recumbent, the angle rail leading the plane is around a horizontal axis pivotably connected to the conveyor. Appropriately agitated conveyor on trestles (ribs) which it in Keep your distance from the person lying down. If necessary, between the upper edge of the trestles and the lower flange of the conveyor troughs Cover plates are pushed in so that the lower run of the conveyor can be closed (the brackets are designed accordingly) The previously mentioned ßehbleche also reach under the horizontal one Part of the angled rail for guiding the planer and therefore keep it at a short distance above the horizontal plane »This means that the conveyor rests on a number of ribs directed transversely to the working face, which a large wind resistance against longitudinal movements of the conveyor

result. ! 09886/0664

O? GW 2132

12-5 1970

Because the front, ramp-like edge of the angle rail (Planer bed) for guiding the planer is located close to the lying surface, only a thin layer of Fein.gu.if Remain lying on the advance whereby the said device under no circumstances can climb, especially since the narrow clans displace the fine goods to the side.

The drive motor of the imbalances in the planer is cooled by a special system, as it is self-heating Radiant heat from the planer housing is added. The stator is cooled by a cooling jacket surrounding it, which is traversed by the cooling water. In a tank screwed in front of the actual planer body with unbalance drive, the the shape of the desired from the charging point of view Plane continues in the direction of the conveyor and protrudes beyond the aforementioned chain channel, the cooling water is housed. By An air compressor connected to one of the imbalances, which generates compressed air above the cooling water level, is used Cooling water is fed to the cooling jacket via a pipe system and to both of them through another pipe system The upper ends of the Vasserlafs are sprayed outwards in such a way that it is also used to cool the mineral to be loaded will. The amount of water is sufficient for about 3 to 4 extraction trips. The empty water tank must then be refilled » After each extraction run, the planer is taken out at the end of the line the longwall extended and shut down and the heating of the working face continued, since the outside during the planing run the most heated layer of the mineral has been removed. During this break, the sponsor will work with the Drives in total moved closer to the working face in a dosed manner, and if necessary topped up with cooling water.In contrast to the mechanical extraction devices commonly used in hard coal mining, for example, which allow an approximately S-shaped laying of the conveyor are the conveyor shots in the case of the invention Device relatively rigidly connected to one another.

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Gw 2132 May 12, 1970

so that they form as large a mass as possible, that of the activated planes dampen the vibrations transmitted to them to a large extent.

The fact that the planer at the ends of its trips out of the Longwall is moved out, a corresponding design of the drive station is required, it is on a Arranged in the extended part of the mining section, the guides for the planer being extended accordingly. There the plane pushes mineral that is not loaded onto the conveyor into the mining section, it is advisable to work on the in the part of the planer guides and the dismantling station protruding from the track, which is expediently on a platform or ramp is mounted to arrange openings through which said mineral down into the mining section, for example on a Line conveyor, falls «,

One of the two reversers for the conveyor (z _o B _o on the auxiliary drive) is used to tension the chains of the Z ₀ ^- B _n face conveyor, which is designed as a double chain scraper conveyor _o For this purpose, it consists of one firmly connected to the conveyor and one opposite it in the longitudinal direction Slidable part, which consists of two side walls connected to one another, between which the star wheel for the chains is mounted and which is connected to hydraulic cylinders that keep it in a position tensioning the conveyor chains, =,

The intriebs station designed for tensioning is expediently provided with a switch which shuts down the intrieb which the movable part of the station actuates when the tensile stress prevailing in the chains falls below a predetermined value. In this way, the conveyor chains with a = will break immediately shut down _o It is possible with this emergency shutdown simultaneously switching off the heating elements to connect or · the entire system stillzusetzeru

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. GW 2132

12.5 · 1970

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The invention is explained in more detail below with reference to drawings explained.

It shows:

Fig. 1 is a schematic partial top view of a mining beam

Fig. 2 is a partially sectioned side view of the face on the Facilities arranged in the mine j

Fig. 3 is a partially sectioned plan view of Pig. 2;

Pig. 4 with a vertical section through the conveyor Plane guide j

FIG. 5 is a plan view of FIG. 4.

In Fig. 1, the sequence of the extraction process is schematically reproduced. A face conveyor 1, e.g. a double chain scraper conveyor, is laid parallel to the working face 4, on which a activated planer 30 is guided. The planer is made with the help of the endless Eette 30 ', 30 "moved along the joint.

There are four on the mountain side of the conveyor Arranged stamps existing mining blocks 2, which are connected to the conveyor 1 via rear cylinders 57.

Between the dismantling racks 2 and the conveyor, additional, movable racks, which will be explained later, are provided on which heating elements 3 are arranged. The heating elements 5 are in the normal position close to the working face 4, which they heat to facilitate mineral extraction. In this advanced position, the heating elements protrude with their guides in the path of movement of the planer 30. The movement devices for the heating elements 5 are therefore controlled so that each

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May 12, 1970 - 10 - Kf

Heating elements that are located close to the approaching plane 30 are to be withdrawn so far that the plane can pass. After the passage of the planer the heating elements moved forward again and assume their original position. Appropriate controls are used to move forwards and backwards the heating elements automatically and depending on the planing movement. To simplify the controls, each two heating elements can be moved at the same time. The advanced position of the heating elements 5 is shown in Fig. 1 with A, the retracted Position marked with B.

From Fig. 1 it can be seen that every second support frame 2 is provided with a transformer 56 which is used to supply energy to the electrically operated heating elements 5 is used. In the event that a transformer 56 fails and has to be replaced, each transformer stands on a carriage 58, its runners to the side outside of the horizontal rails of the trestles 2 rest on the horizontal. To a transformer 56 for replacement To transport the face conveyor 1, it is necessary, the working face-side stamp of the supporting frame and the one in front of it Remove the heating element-carrying device. · The The width of the trestles, i.e. their extension in the longitudinal direction of the face, is the dimensions of the heating element 5 and the movably supporting it Furniture adapted. Seen in the direction perpendicular to the working face, the working blocks are so long that between the transformer 56 and the stamps of the trestle on the working face side, a driveway remains.

From Fig. 2 and 3 it results in particular the arrangement of the h movable heating elements 5 · Between the face conveyor 1 and the On the working face side stamps of the supporting frame 2 (Fig. 2), the cap of which is denoted by 3, there is a pivotable one Frame E, which carries two guide rails 6, which are arranged parallel to one another at a distance and run forward to the working face 4. The heating element 5 is arranged between these guide rails.

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The guide rails 6 ″ consist of inwardly open U-profiles in which correspondingly profiled guide pieces or rollers which are attached to the side walls of the heating element ″ engage. To move the heating element 5 in the guide rails 6 is a hydraulic cylinder 7> which is mounted on the top of frame E "· The to offset side outwardly guided piston rod 8 of the cylinder 7 is at / 8;.. ¹¹ 'at a The cylinder 7 is hinged at its closed end to the heating element at 8 ^1. Between the fastening point 8 ¹ 'and the cylinder there is a shock-absorbing element 8a which keeps the shocks from the heating element 5 when the piston rod 8 is retracted.

In order to ensure that the heating element 5 is guided without sticking, a guide rod 9 is arranged under the cylinder 7, which is attached to the rear of the heating element 5 and is guided in a arranged on the frame R sleeve 10.

The frame R is between the position shown in FIG and the one indicated in the same figure, pivoted to the right Movable position. It consists of two front links 11, which are at their upper ends at 11 'to the forward facing lateral guide rails 6 are attached. In the longitudinal center of the frame R, another link 12 is provided on the mountain side see that at its upper end at 12 * with a cross yoke that the guide rails 6 connects to each other, is articulated. The handlebar 12 is shorter than the handlebar 11, see above that when pivoting the handlebars clockwise, the guide rails 6 nddit only move back in relation to the conveyor 1, but also assume a position inclined downwards to the right.

The rear, shorter link 12 is equipped with _: a device 12 ″ for adjusting its length, for example a clamping spindle, so that the position of the heating unit can be corrected for the impact.

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The link 11 is in a joint 13 at its lower end stored; the link 12 has a corresponding pivot bearing at 14 at its lower end.

While the pivot bearing 13 for the front links is on the side Consoles 16 of the frame R is provided, the pivot bearing 14 for the rear link 12 is located on one after rear arm 15? that of one of the two sides Brackets 16 connecting cross member 17 goes out «between a upwardly projecting console that is connected to the cross member 17 is, "and a joint provided in the lower part of the handlebar 12 19 ′ a hydraulic cylinder 19 is arranged, which is used to adjust the frame R® In from the cylinder 19 to the console 18 guided piston rod is a shock absorber 205 which occurs at the end of the pivoting to the left Keeps shocks away from the heating element 5 "To alleviate shocks, which can occur at the end of the stroke to the right, a leaf spring 21 is attached to the arm 15, against the upward bent part put the lower end of the handlebar 12 on reaching the right end position

The frame H is at 22 on two of the conveyor 1 outgoing Kon = Solen 40 attached “Approximately below the pivot bearing 13 points the frame on both sides a foot 23 with which it slid over the lying surface as it advanced

Vie seen from Fig. 3, to stabilize ösv lateral guide rails 6 a Quergoeh 25 ₉ is provided In addition, the guide rails are connected to one another by one or more plates 24. _{In this way, there is a sufficiently rigid construction or the like that} safely guides the heating elements even when the entire device is exposed to high temperatures

While the frame B is directly connected to the conveyor 1, is a rear cylinder between a support frame 2 "and the conveyor

Gw 2132 May 12, 1970 - 13 -

57 (! "Ig · 1) interposed so that the support frames 16 and 17 for the pivot assembly 11, 12, 6, "with the metered advancement of the Are properly managed. Since they are opposite the trestles march forward to the rhythm of the sponsor, go from the consoles 16 of the frame R guides 26, for example standing on edge Leaf springs, which are slidable in pockets provided on the support frame. The leadership of the extension frame in the Relation to the conveyor consists of a leaf spring lying horizontally under the rear cylinder 57, which is attached to the conveyor and also engages in guide pockets on the support frame.

A plane 30 (FIG. 2) on the mining face serves to extract the mineral is guided by the conveyor 1. For guiding the 30 I planer serves an angle rail 31> its vertical legs 31 'a certain distance from the side wall on the side wall of the conveyor 1 is arranged offset in the direction of the working face 4-.

The planer 30 is equipped on the conveyor side with two guide claws 32, the one above the edge of the conveyor 1 grasp attached guide tube 32 below. That way becomes a safe guidance of the planer in always the same 4 · same as the working face Position achieved.

The slicer 30 is equipped with an unbalanced drive which sets the planer in oscillations that take place in a horizontal, parallel to the working face plane Λ. In the present exemplary embodiment, the motor for the unbalance drive is an electric motor. It is therefore necessary to supply electrical energy to the moving planer. For this purpose, an arm 35 is connected to a plane on a joint 34 with a horizontal joint axis. The boom 35 engages over the conveyor 1 in the direction of the mountain face. On this side of the conveyor 1 there is a channel 37 which is open to the mountain face and in which the busbars (not shown) run. However, the boom 35 is not brought up to the busbars, but it grasps telescopically

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into a carriage 36 which is on top of the channel Is slidably guided and which he thus takes with his back and forth movements on the working face. The carriage 36 is Via a driver (not shown in the articulated connection with the arm 39, which in turn is connected to a (not shown) in the channel running vagina is attached. There are sliding contacts on this carriage, which are in contact with the busbars. The opening of the channel 37 on the mountain side is covered with a curtain 38 equipped, which the arm 39 raises. Due to the arrangement of the opening in the channel 37 on the mountain face side and the attachment of the curtain 38 is the interior of the channel 37 largely in front Contamination, in particular against the ingress of conveyed goods that are transported on the conveyor 1, are protected.

The channel 37 rests with the interposition of damping springs, for example disc springs, on two consoles 40 (ü © Rinne), Via which the frame R is connected to the conveyor 1. The division of the device for power supply into the boom 35> the carriage 36 and the carriage allows several shock-absorbing Interpose devices that the vibrations transmitted by the activated planer 30 from the current collector trolley keep away.

On the mountain side next to the channel 37, another channel is provided, the bottom of which has openings so that Conveyed goods that should get into this channel fall down onto the lying surface. With the help of consoles 43 are on Channel 41 arranged switches which are operated by the arm 39. The switches are designed so that the planer each performs the switching operations required for retraction. Corresponding switching elements are used at the same time to bring the frame R behind the planer back into their original position. Mountain shock side a cable open to the top joins channel 41

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May 12, 1970

channel 44 through which the various supply cables and control lines run.

On the working face side of the conveyor are two consoles for connection to the angle rail 31 j 31 'at the ends of ge gutter 45 "(Fig. 2). The inserted through the consoles 45 Bolts 46 are used to connect the adjacent Sponsorships. The eyes 4? of the two consoles of a gutter are with corresponding eyes in the vertical plates 48 of the angle rail 3I by strong bearing bolts 47 tied together. The standing plates 48 are cut out at 49 and form a return channel for the slack side of the planer.

chain. For better support of the plow chain, the |

Standing plates 48 wear plates 50 are provided. The one on this The chain channel formed in this way is closed on its upper side by a cover 51 which can be pivoted up about a hinge 52 is to make the chain channel freely accessible.

As can be seen from the drawing (Fig. 4), the reach under vertical standing plates 48 also the horizontally lying leg of the angle rail 31> so that the latter does not immediately rest on the person lying down. Rather, the angle rail is supported on a number of mutually parallel ribs running transversely to the working face.

In the same way, the conveyor 1 is also arranged in a slightly raised position in relation to the lying position. In order to arrange the conveyor 1 in this way, support frames 53 are attached to both of its side walls, on which feet pointing inward under the conveyor at intervals from one another ^ A - are provided. The attachment of the support frames 53 to the conveyor side walls 1 is carried out so that a slot remains between the lower, inwardly directed flanges of the conveyor and the feet 54, which, if desired, to

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Gw 2132 May 12, 1970

Receiving a sheet metal 55 covering the lower run can be used can.

The angle rails 31 leading from the planer 30? 31 'and conveyor 1, the arrangement _9, as mentioned, - rests on a number of ribs running transversely to the joint, has a very high resistance to longitudinal displacements Fine material through., So that the planer always cuts at the desired height - and does not "climb", especially since the ramp-like front edge of the angle rail (planer bed) was located relatively close to the surface on the joint side

Pig. 4 and 5 tend more details in the design of the conveyor and arranged thereon parts _o the conveyor are in turn "as is apparent from Figo 4, attached to the side support frames 53, the lower _s is- introverted flanges of the conveyor with MISSEN 54 a reach under such a distance, i.e. a gap 55 ^! for attaching a cover plate remains _{or similar}

_S is on the working face side arranged consoles 4-5 as Figo 5 shows j a matching with the length of Föräererschusses, the planing leading angle bar 31 attached, the attachment is with the aid of appropriate, between the conveyor mid dsa vertical leg 31 'of the Winkelschieae arranged ₃ vertical web plates 48 _o the compounds are that ₉ instance seen so formed ₅ from the working face of, ge ^ Eils © in vertical plate abuts against the left side of the console "in the © Ueise is ensured that sfoh occurring due imterseiiisdlielier heating voltages between parts 1 and 3'ü cannot act as ¥ © rforiamigen _o The heavy connecting bolts 47 on the console, 43 ¥ @ ruead © tea are with T'Sllerfeclesa. 63 _{the a certain resilience of the connection pass 9} the occurrence of high, heat-related tensions

_17th

Gw. 2132 12, 5th 1970

allow, but are so stiff that one is essentially rigid connection between angle rail 31 and conveyor 1 is achieved. A connection that is as rigid as possible is therefore important in order to reduce the reaction forces of the vibrations as large a mass as possible will.

From Pig. 4 shows that the working face side edge of the after The horizontal part 31 of the angle rail drawn below is not all the way down to the lying, but that the rib-shaped after. downwardly extending standing plates 48 or the latter after At the front, standing plates 48 'extending under the angled rail extend a little beyond the mentioned front edge downwards. As a result, the entire arrangement rests on ribs running transversely to the working face, which, due to the high surface loading, are supported on the lying person even if there is a thin one Layer of fine material remains.

For aligning the angle rail sections lying one behind the other 31 with each other are connecting elements 60, which are below the horizontal leg of the angle rail at the ends of the sections are provided.

On the ridge side of the conveyor are side plates 62 attached to the duct behind it with the busbars against damage from the planer to the conveyor 1 Protect transferred material.

At each end of a conveyor section 1 are consoles 40 ' which hold the channel 37. Be fastenings are spring elements and to a certain extent resilient, so Vibrations kept away from the duct and the power supply rails and sufficient flexibility of the parts against one another is achieved.

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The consoles 40 each end in two holding eyes, where the Frame R can be connected to the movable heating elements.

Another console (not shown) is located in the middle between the consoles 40 '. The rear cylinder is attached to this connected, which is connected to the adjacent support frame 2 at its other end. At the same console is a flat guide rail, expediently a strong spring leaf, rigidly attached to prevent lateral waste, on which the trestle guides itself when moving up.

From Pig. 5 shows the channel 41 located next to the channel 37, the bottom plate of which is provided with openings through which material that has rolled over the channel 37 can fall down to the lying surface. On the side of the channel 41, brackets 61 are attached which accommodate the switches, with the help of which the arm 39 (S ¹ Ig "2) connected to the planer arm triggers the movement processes on the pivotable frame R located in front of and behind the moving planer On the upper side of the channel 37, a guide tube 36 'is arranged on the conveyor side for guiding the slide 36 that is displaceable on top of the channel 37.

The heating elements are kept as close as possible to the working face in order to bring it to the desired temperature ai bring. They are only withdrawn when the plane passes. The optimal approach of the heating elements the excavation thrust is controlled by sensors provided on the elements themselves or their guides. This ensures that the desired short distance between the heating elements and the joint is maintained even if the joint is irregular will.

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The entire device located in the face is on their the entire length at the same time when the planer has finished its travel. So that no damage to the devices occur when there is particularly great resistance to stooping, the rear cylinders are equipped with pressure relief valves equipped that respond as soon as a specified maximum permissible pressure is exceeded.

The drive station for the planer and the conveyor is located in the mining route. The conveyor and the angle rail arranged laterally on it for guiding the planer are accordingly lengthened and rest on a base plate, possibly on hydraulically adjustable legs in the course is supported. Because the planer has a certain amount at the end of its journey Part of the mineral that can no longer load into the conveyor, but rather brings it to the drive station, is the base plate provided with openings through which the conveyed material falls down and, for example, by a conveyor belt is transported away.

Usually the conveyor is a double chain scraper conveyor designed because such conveyors have the necessary resistance to the various loads «. One of the two ways of doing this is to reverse the tensioning of the conveyor chains designed in two parts and consists of one firmly connected to the conveyor and one that is longitudinally displaceable with respect to it Part in which the star wheel for the chains is stored. With the help of hydraulic cylinders the movable part compared to the fixed so shifted that the required There is tension in the chains »

In a similar way, the plow chain receives its - "Vorsparmuago Bei If the chains break, the "movable rope of the station is displaced in relation to the stationary one under the effect of the now

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unloaded hydraulic cylinder. This movement is for exploited the actuation of an emergency switch, which immediately shuts down the system.

The scrapers used on a double chain scraper conveyor have a downwardly open portal-like opening in their middle, which is necessary for structural reasons. In order to avoid that fine material remains in the middle part of the conveyor or that it becomes excessive due to mineral that remains If there is jamming and thus wear, it is advisable to place a central strip in the middle of the conveyor trough fasten that corresponds to the cross-section of the portal-like openings in the scratches.

109885/0664

Claims (1)

G-w 2132 May 12, 1970 Hf Pat e η t a η s ρ r ü c h e 1. Process for the extraction of minerals stored in seams, in particular copper shale in underground mining by peeling or cutting extraction, thus identified shows that the mine face is heated prior to extraction and then the mineral is loosened from the heated shock. 2. The method according to claim 1, dad urchgeke η η records that when using a planer as a mining machine, the planer holds a certain time after each trip in the route while the shock is re-heated. * 3- Process according to claims 1 and 2, since d u r c h ge - k e η η ζ ei c h η et that when using a wandering hydraulic trestle dismantling both this during the plow standstill after a certain advance of the For der he plant as well as during the extraction period (e.g. in groups) will. 4. Apparatus for carrying out the method according to claims 1 to 3 »consisting of a face conveyor on which a mining machine pulled by an endless chain is guided and connected to the conveyor via rear cylinder, equipped with hydraulic rams extension racks, M characterized in that for Heating of the working face (4) movably mounted heating elements (5) are provided in guides (6) between an advanced position in which they are close to the working face ■ (4) and about halfway up the face, and a retracted position are movable, in which they release a lane required for driving the mining machine (30) at the joint. -Z- 109886/0864 Gw 2132 ■ "" '" May 12, 1970 - sr - Zf ⁴⁴ 20338Q7 5. Apparatus according to claim 4, characterized in that each heating element (5) with a drive (7j 19) is connected and that the drives individually or in groups depending on the movement of the mining machine (30) can be switched on so that the, in the direction of movement Extraction machine seen, close in front of this located heating elements assume their retracted position and, after the mining machine has passed, their advanced position return. 6. Apparatus according to claim '4- and / or 5, characterized g e mark calibrates that each heating element (5) on two Heat levels can be switched, the switch-over being automatic depending on the distance between the heating element (5) and the working face (4-) takes place in such a way that the heating element in the advanced position to the higher and in the retracted position is switched to the lower heat setting. 7- device according to one or more of the preceding claims, characterized in that each heating element (5) in rail-shaped, arranged at right angles to the working face Guides (6) with the help of a hydraulic cylinder (7) is movable. 8. The device according to one or more of claims A to 7 »characterized in that each heating element (5) has sensors protruding over the end face, which switch off the drive for the forward movement when they come into contact with the mining joint (4). 9. The device according to one or more of claims 4- to 8, characterized in that each! Guide (6) for a heating element (5) bh one of par all elograimn-like arranged links (11, 12) existing, by a hydraulic ZySnder (19) is attached to and from the working joint (4) pivotable frame (H). 109886/0654 Gw 2132 May 12, 1970 - J - Ef 10. Device according to one or more & r claims 4 "to 9» characterized in that the rail-shaped Guides (6) form inwardly open U-profiles, which ' are arranged to the side of the heating element (5) and in which the Heating element (5) with appropriately profiled guide strips or hollows "is movable. 11. Device according to one or more of claims 4 "to 10, thereby g e k e η η ze i c h η e t that the hydraulic Cylinder (7) is arranged in the longitudinal center of the heating element (5) between this and the frame (E). 12. Device according to one or more of claims 4 "to 11, characterized in that in the same vertical plane like the hydraulic cylinder (7) has a guide rod (9) is attached to the heating element (5), which is slidable in a guide sleeve (10) fixed to the frame (R). 13. Device according to one or more of claims 4 to 12, characterized in that the or the handlebars (11) of the pivoting frame (R) on the excavation face are longer than the handlebars (12) on the excavation face are trained. 14. Device according to one or more of claims 4 to 13 » characterized in that the pivotable Frame (R) on a floor frame (16, 17, 23) . -. is solidified with the face conveyor (1) on the Mining joint facing away from the side is connected (at 40). 15 device according to one or more of claims 4 to 14, characterized in that the bottom frame from two parallel, spaced side by side and in side brackets (16) placed close to the patient 109885/0654 Gw 2132 May 12, 1970 - ψ - Ef- ordered, on each of which one of the handlebars on the excavation joint (11) is attached with its lower end pivotably (at 13), wherein the side consoles are connected by a cross member (1?) arranged at a distance above the horizontal plane are, which carries an arm (15) in its middle, on which the abutment-side link (12) of the frame (R) with his lower end is pivotable (at 14) 16. The device according to one or more of claims 4 to 15 _s, characterized in that the hydraulic cylinder (19) for pivoting the frame (R) between the cross member (17) "and the limb on the rockfall side (12) is arranged «, 17 · device wirdo corrected according to one or more of the Insprüche 4 to 16, characterized in that the mountains shock-side link (12) comprises a device for length adjustment ·, for example, having a clamping spindle (12 ") _s whereby the position of the heating units for Erzstoß 18 _»s device according to one or more of the Insprüche 4 to 17 characterized * in that the pivotable panels (E) is equipped on reaching its end position with effective StoBäämpfungseinrichtungen (2O ₉ 21) ο 19 · forrichtimg "according to one or more of the claims 4 to 18, Cl a & ν. Re" h marked "that between the" hydraulic cylinder (19) which adjusts the pivotable lame (H) and the cross member a cup spring (20 ) existing shock absorber is arranged _o GW 2132 May 12, 1970 Kf 20. Device according to one or more of claims 4- Ms 19, d ad characterized by that on the arm (15) a swiveling path of the shorter link (12) in retracted Position of the heating elements (5) limiting leaf spring (21) "is attached. · ' 21. Device according to one or more of claims 4 to 20, characterized ge η et that the side brackets (16) of the floor frame with extensions (26) are connected, which in! guides on the outside of the support frames (2) slide for said support of the frame (R). 22. Device according to one or more of claims 4 to 21, characterized in that the rear cylinder (57) of the supporting frame (2) is arranged between the longitudinal members (16, 26) of the floor frame. 23. Device according to one or more of claims 4 to 22, characterized in that the extensions (26) of the side consoles (16) consist of leaf springs standing on edge. 24. The device according to one or more of claims 4 to 23, characterized in that the supporting blocks of four connected by horizontal rails and caps There are punches in which the distance between the pairs of punches standing one behind the other in the direction of prevention is increased is that between them space for a transformer (56) for power supply of the heating elements (5) "and a driveway is available. 25. Device according to one or more of claims 4 to 24, characterized in that the transformer (56) rests on a slide that engages over the base frame of the support frame and moves with its runners (59) supported on the lying. 109885/0654 GW 2132 May 12, 1970 Kf 26. Device according to one or more of claims 4 to 25, characterized in that a plow (30) is used as the extraction machine, which is located on a working face side angled rail (31) arranged on the conveyor (1) is guided and engages under a guide (33) provided on the conveyor (1) on the working face side with a claw (32). 27 device according to one or more of claims 4 to 26, characterized in that the planer is provided with an unbalance drive that it in the set in vibrations on the horizontal plane. 28. Device according to one or more of claims 4 to 27, characterized in that the planer (30) has a boom (35) extending over the conveyor (1) has, which is equipped with devices for taking power from busbars attached to the conveyor on the landslide side is. 29. "Device according to one or more of claims 4 to 28, characterized in that on the mountain face side on the conveyor (1) an open to the mountain face side, the Channel (37) containing busbars is attached, on which a carriage (36) dragged along by the boom (35) is guided which is articulated to an arm (39) protruding from the channel (37). 30. Device according to one or more of claims 4 to 29, characterized in that the arm (39) is attached to a carriage guided in the channel (37), the carries the sliding contacts. 31. Device according to one or more of claims 4 to 30, characterized in that between the boom (35) and the carriage (36) and between the Slide (36) and the carriage vibration-damping elements, e.g. damping springs are provided. 109885/0654 Gw 2132 12.5.197p Kf 2.03380? 32. Device according to one or more of claims 4 "to 31? characterized in that the boom (35) engages telescopic article in the carriage (36) and the damping elements are effective in the longitudinal direction. 33 device according to one or more of claims 4 to 32, characterized in that the channel (37) with the interposition of vibration damping Elements at mountains abut on the conveyor (1) provided Brackets (40) "is attached · 34. Device according to one or more of claims 4 to 33j characterized in that the the Planer (30) leading angle rail (31) opposite the working face side Side wall of the conveyor (1) is arranged offset towards the working face and that between the vertical leg (31O of the angle rail (31) and the conveyor side wall Standing plates (48 »48 ') running across the conveyor are provided, which by bolts (47) on the conveyor side wall attached brackets (45) hinged are, wherein the standing plates (48) are connected above the conveyor side wall by a guide tube (33), which the The planer (30) has two guide pawls (32) under it on the conveyor side. 35 · Device according to one or more of claims 4 to 34 _9, characterized in that the standing plates (48) in the part ^{adjoining the vertical leg (3I 8} ) of the angle rail (31) to form a continuous channel (49) in the longitudinal direction of the face are cut out to accommodate the return run (30 ") of the pulling chain for the plane. .- ■■■■ 36. Device according to one or more of claims 4 to 355 characterized in that the Chain channel (49) through a hinged cover (51) is locked. 109885 / 0S54 _CT O GW 2152 12 _o 5 Kf 37 device according to one or more of claims 4 to 36, characterized in that the the Planer (30) leading angle rail (31) do a horizontal Axis (47) is pivotably connected to the conveyor (1) « 38. "Device according to one or more of claims 4 to 37> characterized in ₉ that the conveyor (1) rests on stands (53) which keep it at a distance from the person lying down. 39 · Device according to one or more of Claims 4 to 385 ™, characterized in that the brackets (53) ^{underpin the conveyor with inwardly directed feet (5 2} O and that between the feet (54-) and the underside of the lower conveyor flange Slot (55 ') is provided for receiving a cover plate (55) . 40. Device according to one or more of claims 4 to 39, characterized in that the rear cylinders (.57) are connected to metering devices and can be controlled together over the entire length of the face at the same time. φ 41. Device according to one or more of claims 4 to 40, d a characterized in that the am Drive station arranged as a longwall passage for the double chain scraper conveyor trained face conveyor (1) one firmly connected to the conveyor and one against it in Has longitudinally displaceable part, which consists of two interconnected side walls, between which the star wheels for the chains are stored and which is connected to hydraulic cylinders that put it in hold the conveyor chains in a tensioning position. - 9 -109 8 8 S / Gw 2132 May 12, 1970 ■. - 9 - Kf. '■ · 42. Device according to one or more of .Ansprüche 4 to 41, characterized in that at the Drive station a switch which shuts down the drive is arranged, which is actuated by the movable part of the station, if the tensile stress seen in the chains & is a given Size falls below. / 43. Device according to one or more of claims 4 to 42, thereby g e k e η η ζ e ic h η e t that the drive station on a floor plate arranged in the conveyor line is mounted, except for the conveyor and the Planer leading angle rail are longer. I. 44. Device according to one or more of claims 4 to 43, characterized g e k e η η · ζ e i c h η e t that the working pressure of the return cylinder (57) through pressure relief valves to a given size is limited. Blank page