DE1247243B - Progressive pit expansion - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

E21d

German class: 5 c -23/00

Number: 1247 243

File number; A 49106 VI a / 5 c

Filing date: May 4, 1965

Opened on: August 17, 1967

The invention relates to a progressive trench lining with a row arranged next to one another Supporting trestles, a rear device and an abutment running through the longwall.

When mining coal, various types of mining machines, such as planers and roller cutters, are used and the like, related.

In the case of a planer, with each lift of the same, the excavation front only steps forward by a small amount, which enables the use of a stepping construction with a pre-attachment without a larger part of the hanging wall remaining free. However, if a cutting machine is used, the width of the mining step is considerably larger from the outset. However, the expansion cannot be advanced or restarted immediately after the machine has passed, since the cutting machine, which usually only works on one side, has to be returned to its starting point through the longwall after each pass in order to be operational again. Only after the cutting machine has been returned can the dismantling: be pushed forward and set again. In the meantime, the hanging wall must be taken up by the pre-attachment, which is often not able to cope with the burden to the full. Double-acting cutting machines have already become known which avoid this disadvantage, but are machines that have one 'at both ends. Have a mining head, naturally longer, heavier and more expensive. In addition, they require a so-called machine niche at each end of the mining front, which when using normal, single-acting cutting machines is only required on one side of the mining front.

In addition, it was found that the decisive factor for an economic dismantling is not the efficiency of the machine, but the speed with which the expansion can be carried out. '_

The invention is intended to avoid the disadvantages considered above. The task of The invention accordingly consists in particular in creating a progressive pit lining that the advancement and replacement of the individual support frames immediately after the mining machine has passed permitted. The machine must, as there is also a return behind the expansion, at least from similar ones Reasons such as those considered previously are out of the question, and can therefore be traced back through the expansion itself be. .

Since an advance of the pit lining is eliminated in its entirety, it must be preferred Progressive pit expansion

Applicant:

Georges Alacchi, Frais-Marais, Nord (France)

Representative:

Dr.-Ing. E. Hoffmann, Dipl.-Ing. W. Eitle »

and Dr. rer. nat. K. Hoffmann, Patent Attorneys, Munich 8, Maria-Theresiä-Str. 6th

Named as inventor: V

Georges Alacchi, Frais-Maräis, North (France) "

Claimed priority:

France from May 4th. 1964 (973 201)

each trestle of the expansion must be provided with an abutment, on which it is for the purpose of the individual Advance can support .;

By the German patent specification 1143 771 is already an abutment running through the entire longwall known, on which the individual trestles support the expansion by means of hydraulic rams when advancing and that after the Repositioning of the parts of the supporting blocks on the working face side can be tightened. In particular, looks this patent specification, apart from stamps on the working face and offset side, also has central stamps before, and the continuous abutment, which is also designed as a conveyor, in particular a conveyor belt is, is between the middle temples and the offset-side or so-called Nachziehstempehi arranged.

However, even such training does not allow Return of the cutting machine by the removal, since the entire interior of the trestles of the Abutment and the hydraulic rear device is taken. ·

Accordingly, in connection with this expansion, there is also a double-acting one. Cutting machine provided.

709 637/76

Gradual pit expansion of the Fig. ₁ -S. a detail from, Fig. 7 in an enlarged

mentioned type is now according to the invention. thereby, ge scale,

indicates that the abutment is box-shaped from F i g. 9 is a schematic sectional view according to FIG

is formed and at the same time to accommodate the back of the line IX-IX in F i g. 8th,
device is used and that the stamp of the block 5 F ig. 10 one. View of an element, the counter only via a common cap, possibly lagecs with the ManövrJerainÄhtung,
articulated, connected to each other. Fig; 11 is a sectional view through the same

The articulation of the punches with respect to the cap along the line XI-XI in FIG. 10,
is particularly advantageous from the Giimde «, <fa $ das Fig; 12 is a further sectional view through the

The hanging wall is not always parallel to the lying one, as shown in FIG. 10 in elevation,
runs and the rest of the bumps also occur F i g. 13 to 15 a telescopic additional pledge

can, which the punch otherwise on the bending direction at the rear of the cap in plan view, were burdened. Cut and detail,

According to the invention, as can be seen, the ref- F i g. 16 and 17 are each a side view of a

Do not stick firmly with the stamps of the dismantling front support device in two connected element, but can have different positions.

these can be connected if necessary. Since the stamps The progressive pit lining according to the invention

only over the cap, miteaancfer in. The connection can be used universally, regardless of the position in which it is, thus almost the entire seam between the outer layers, and! Dismantling front Hegen.,
Ren stamping the jacking blocks available space 20 In the case of ape events, as can be seen from, for example, for the Küekfüferaag- der inspection Fig. 1 to T , the expansion by means of a machine can be used. If a central ram can be seen with a predetermined number of juxtaposed brackets P , it is formed, for example, by hydraulic ones, of those in the one under consideration. Example medium, can be swiveled out. Another advantage of this each two parallel rows i * ¹ before stamping I, 2 un, d3 construction is that it has considerably larger steps 25 ?. The back of the trestles takes place in the direction of the expansion as for example the ¹ arrow ..?.

according to the execution considered at the beginning. Before the die stamps are designed and telescopic

"Preferably the abutment, which consists of a double wire, is itself the backing device, - with the end-of-line hydraulic cylinder work, as shown in FIG. 1 " which stamps on the cap4 facing the removal by alternately insertable chains or parts of the front FT. connect, which are only attached when required ·. attached by means of a Hüfee5, which is permanently connected to the flap 4 by eliminating any expansion; while the cylinder 1 '"is on filling parts, the fall fan is largely on the side of the lying M of the seam and is reduced! which is preferably articulated on this foot

According to a further development, the abutment is fastened.

from the individual, separately transportable box- The offset-side stamp 3 are also with

Mcfet-shaped elements, each of which has a k © m- its rod 3 in the earer sleeve T on the cap 4. Includes rear device. 40 strengthens, which are normally countered by the punches

The supporting blocks according to the invention are pressed each time the hanging wall is pressed. The foot of the belonging as a whole advanced and set. The given cylinder 3 "is the same as with a sliding shoe 6, if one can be provided at its offset-side end, which is preferably hinged to it"
Re-pledging device can be provided in order to prevent the middle stamps 2 'are attached to the cap 4 with

Hanger araf the offset side · as long as abztistützenr, 45 ids of the upper · end of their cylinder 2 "hinged, which until this part * of the · strut by the offset are provided with pin 9 ·, which is filled in the side in particular, such a ^·-1 Naehpfänd- guides 10 extend · ,, which: beeinriehtung on the cap -.4 are, for example, consolidates on hydraulischem- paths for Removing the lower end of the cap from ZyEnteleskopartig Being extensible.. d'er-s 2 "teraasragende; Piston rod; 2 '· wears on her

If the expansion according to the invention is in a 50 foot likewise a sliding shoe 11.
inclined · longwall use- soE, for which he the lower. The ends of the detonators 2 "are equally suitable for the middle one, the outbreaks of stamps - ^ jejdes-Ranmeassintf are connected to one another by a coupling further on the working face side with a preferably stan-g ^ S is with the rod 3 * of a tilt cylinder 13

The details of the invention are linked in FIG. 55, the other end of which connects to the cap The following description of an execution is given at a point which approximates; in the play- in 'in connection with the · drawings closer level- the offset-related stamp', namely ia the explained. Ei this - shows middle · between: this stamp is located.

Fi g. 1 'a trestle according to the invention in the one-abutment 14, see the inside of the

Elevation, ■ 60 building blocks located and through the whole, expansion

F i g. 2 a plan of this trestle corresponding to = extends from one end of the strut to the other, the · line Ι-Γ-ΙΓ itr Ff g Ϊ, lies in its normal: position on the face of the

F-'i · g. 3 to 6 im- ¹ different Fhaserr in sliding shoes: It is the mountain stamp 2 * an. On the advancement of the same extension frame in a given dismantling step? The side facing FT meets the inclined longwall, in which - with increasing mining progression 65 abutment 14 a - Ahbaofördereinrichrang 15, is also dismantled, with the trestles - for example a conveyor belt towards the mining front. Each offset side Stemsenkreeht stand, pel 3 des. Expansion, is with the abutment 14 'by means of

Fig-: 7- a top view of the work place, a chain or a rope 16 '. Detachably connected.

5 "6

This chain or this rope 16 can be a chain or a rope 16, 16 'by means of these rollers.

Rear device, which is described in more detail below, on the one hand on the end wall 14 "of the element

will be withdrawn. On the other hand, the counter 14 'and on the other hand, on each of a sliding shoe 6 of the

bearing 14 is attached by means of chains or ropes 17 only with some offset-side punch 3, and it is also

the punch 1 on the working face side of the entire construction 5 by at least one deflection roller (roller 27 for the

construction connected to the abutment after re-setting rope 16, rollers 28, 29, 30, 31, 32 for the rope 16 ') so-

to be able to follow the entire expansion. as if it is passed through an opening in the

If the expansion according to the invention in a set-side longitudinal wall 14 '"of the element 14' was forward Streb is used in which the mining is seen.

front is perpendicular to the greatest inclination of the seam, io As can be seen without further ado, as a result of this, the jacks run in the direction of the greatest arrangement of the rollers 27 and 28 next to the hydrau incline (Figs. 3 to 6 and 9). In this case likylinder 24 by the stroke of the latter, the dismantling conveyor 15 used is exposed to the stepping end of the rope or the. Chain shortened, dismantling front FT open, so that the coal obtained by which the abutment 14 pulls a train on the machine 18 (Fig. 4) independently 15 on the offset-side stamp 3 and thus the individual falls into the conveyor. On its the working face supporting blocks is exercised. These can be brought up to the dismantling front on this facing side, the abutment 14 or the way.
Conveying means 15 in the vicinity of the lying with at one end of the longitudinal wall is provided drive cylinders 19, which are arranged parallel to its 14 "'of each element 14' with a fastening sleeve main axis and the piston rod 20 33, while the other End of a mandrel with one end of the chains or ropes 17 34, which is connected for insertion into the sleeve 33 of the, after it has been determined by a guide roller 20 connected to the conveyor element 14 'and there connected to the device 15 - Can be fixed by means of a safety bolt 35.
are bypassed, detachable at the foot of a mining joint The work flow when removing the seam and side stamp 1 (Fig. 7, 8) attached skid. The jerk of the pit lining according to the invention becomes the drive cylinder 19 can of course also be accommodated in the interior of the abutment 14 in connection with FIGS. 3 to 6. with the foregoing description clearly. It

In fig. 3 to 6, in which the individual phases are only mentioned again, that the back of the dismantling as well as the back and setting of the device receiving abutment 14 are shown after the pit expansion, is also the 3 ° to the resetting of the entire expansion after Application of the aforementioned Nachpfändeinrich- Fig. 5 through the aforementioned and through the tion 21 can be seen. This has a fixed part of the cylinder 19 actuated chains or ropes are tightened directly inside the cap 4 or on, so that in turn the in F i g. 3 position shown offset-side end of the same is arranged and occupies. For this purpose, as for the return, a movable part 21 ', which is slidably guided in or on the construction of the mining machine 18 inside the solid part of the replenishment device, the middle cylinder 2 is temporarily tele- backwards after the relevant trestle has advanced panned. The same thing happens to be extendable like a scope and, when reinserting, the individual support frames are placed against the hanging wall of the frame. The most important fixed abutment according to F i g. 4th
Details of such a post-mortgage device 40. The telescopic post-mortgage already mentioned are described below. device 21 is designed according to the

In the case of a sloping place of work with a guide example at one at the offset end of the

the dismantling front according to FIGS. 3 to 6 has the last cap4 attached rail45 attached to the

tere often the tendency to break in in places. Their ends are curved and with elongated openings

can be provided by means of a support bolt 22 according to FIG. 3 Φ5 46, which is used to accommodate wedges47

to be encountered. serve with which the Nachpfändeinrichtung on the

This must of course be attached before the rail 45 is passed (FIG. 13).

the mining machine 18 are removed, which with- The Nachpfändeinrichtung itself has a frame.

by means of a shoe 23 on the stems 48 on the face side, on which two guides 49 for moving

peinl of the pit support (Fig. 4). A 50 borrowed part 21 'of the post-pledging facility attached:

Another way to avoid the onset of degradation are. The frame 48 is supported by two side rails

To prevent front, however, consists in the attachment 50 as well as a cross member 52 and a

Supply of a support device on the trestles binding rail 53 is formed. Both rails 50 white

itself, a fork on the side facing the cap 4, which will also be briefly in the following

is gone. . 55 51 on, with which they are at the curved end of the

The abutment 14 is box-shaped and rails 45 are attached.

and preferably consists of just as many individual The guide rods 49 are on the one hand on the elements 14 'as mining trestles are in front of the longwall cross member 52 and on the other hand in flanges 54 on hand. Since the trestles are normally attached to the connecting rail 53. A re-pledging distance is arranged, the length 50 is the rail carrier 55, which forms part of the movable individual elements 14 'larger than the width of the part 21', has hollow BeBucks P at its ends. Each of the elements 14 'has fastening lugs 56 , the transverse longitudinal inner on a rear cylinder 24, the axis of which are borrowed openings 57, in which wedges parallel to the main axis of the abutment 14 runs. 58 are used. The latter are on the At one end of the rear cylinder 24, ζ. B. 5s Pfändschienträger 55 the actual Nachein hydraulic cylinder, with the element 14 'fixedly Pfändschienen 59 attached. (F i g. 13 and 15), of bound, while its piston rod carries two pulleys 25 and 26 at its free one, each of which consists of a leaf spring assembly 61 and one end. Around each extension piece 60 is made. The latter, like the

Claims (8)

I 247 speaking attachment projection 56 has a transverse elongated hole through which the KeE 58 passes. In the middle of the cross member 52, a hydraulic motor is attached to it, which carries a chain wheel 63, while a deflection wheel 64 is mounted on the connecting rail 53. A chain 65 is guided over the two wheels, the two ends of which are connected to the secondary rail carrier 55. One strand of this chain is guided through a bore 66 in the post-pledging rail carrier 55. The latter can thus be displaced along the guide rods 49 by the hydraulic motor 62 together with the parts of the post-filling device connected to it, whereby it is guided on them (FIGS. 13, 14). 16 and 17 show the already mentioned support device 67, which can be attached to the end of the construction jacks according to the invention on the excavation ram side in order to prevent the excavation front from collapsing when the excavation increases. The Abstützeinrichtang 67 consists essentially of an angle rail 68 attached between the two rams 1 on the excavation ram side, two hydraulic cylinders 69 and 70 provided on this and a protective shield 71, which is brought into contact with the excavation front by the interaction of the cylinders 69 and 70 can be folded back. The cylinder 69 is fixedly attached to the rail 68, while the cylinder 70 is hinged at its rearward end to the angle rail 68. The piston rod of the lower cylinder 69 is provided by means of a fork 72 and that of the upper cylinder 70 is provided on the protective shield 71 by means of a toggle rod 74. Fastening nose 73 articulated. Of course, the pit lining according to the invention is equally suitable for use in a horizontal or only slightly inclined seam. Here, too, a support device can sometimes be advantageous. Under certain circumstances, this may also be desirable at the end of the support frames on the offset side. The protective shield can be divided about half the height of the trestles and consist of two metal sheets, one of which is connected to the cap and the other of which is connected to the feet of the stamps on the offset side and which intersect in the middle. In addition to any pivotable central stamps that are provided, the stamps on the working face can also be pivotably articulated to the cap in order to enable even more unhindered work. Claims; 55 1. Gradual pit support with a row of support blocks arranged next to each other, one Rear device and an abutment running through the longwall, characterized in that that the abutment (14) is box-shaped and at the same time for receiving the rear device (24 to 32) is used and that the stamp (1, 2,3) of the block (?) only over a common cap (4), possibly articulated, are connected to one another. 2. Pit support according to claim 1, characterized in that on the support blocks (P) apart from the outer punches (1, 3), middle punches (2) are provided which are attached to the cap (4) of the Aüsbaubockes are articulated by their outer cylinder (2 "), the lower ends of which with a Tilt cylinder (13,13 ') are connected, which in turn with its other end on the cap one. Point is articulated, which is adjacent to a plane laid by the stamp (3) on the offset side is. 3. Pit lining according to claim 2, characterized in that the outer cylinder (2 ") each Central punch (2) at its upper end has two lateral pins (9) which are inserted on the underside the cap (4) attached vertical guides (10) are mounted. 4. Pit lining according to claim 2 or 3, characterized in that the middle punch (2) of each Aüsbaubockes (F) are connected to one another by a coupling rod (S) which is connected to the lower end of its outer cylinder (2 ") and in its center is connected to the tilt cylinder (13, 13 '). 5. Pit lining according to claim I _3, characterized in that the abutment (14) is formed from a number of box-shaped individual elements (14 ') which are connected by means of a dome (34) which is attached to one end of each one of the elements and is inserted into a sleeve (34) at the other end of the following element, the mandrel being held in the sleeve by means of a safety bolt (35). 6. pit lining according to claim 5, characterized in that each individual element (14 ') of the Abutment (14) has a rear cylinder (24) which at one end with a side wall (14 ") of this element connected and arranged parallel to the longitudinal walls (14" ') of this element is that two pulleys (25, 26) on the! free end of the rod of the rear cylinder are provided that several UmlehkroUen (27 to 32) are fixedly arranged in the element and that two chains or ropes (16, 16 ') are provided, which on the one hand on the same side 'Wall (14 ") of the element are attached like the rear cylinder (24) and on the other hand are detachably connected to the offset-side stamps (3) of each support frame (P), the chains or ropes first via the pulleys (2S ₁ 26) and then are guided over the fixedly arranged deflecting rollers (27 to 32). 7. Pit lining according to one of claims 1, 5 and 6, characterized in that the abutment (14) is firmly connected to a conveyor (15), which at certain points with a Drive cylinder (19) is provided, which is arranged parallel to the longitudinal axis of the abutment and the rod of which is connected to a chain or rope (17) leading around around a deflection roller (20) attached to the conveying means, releasably on the foot (6) of a mining ram side Stamp (1) is attached. 8. Pit support according to one of claims 1 to 4, characterized in that each support frame at its end on the offset side a subsequent Pfändeinrichtung (21) and possibly on its end on the working ram side has a support device (67) owns.