DE2630815A1 - MECHANIZED EXTENSION - Google Patents

Description

Gosudarstvennyj nautschno-issledowatelskij, projektno-Konstruktorskij i projektnyj ugolnyj institute- Pechornii project ,

Vorkuta / USSR

July 8, 1976

EZ / B

P 65 525

MECKMISIERTEH EXPANSION

More specifically, the invention relates to coal mining

the construction of mechanized extensions · The invention is

(Shield extensions) the most advantageous for protection and support extensions during operation

stronger
to be used in seams with shallow and / or inclined dipping

The mechanized expansion is for use in seams with

speed
one mighty ^ on 2 to 3 »5 m and a fall angle of up to 35 °

The invention can be widely used in mining collisions with hard ¹ zubruchgehendem slope ends where under the action

jamming of cracks and considerable dislocations of the hanging wall of the expansion units and a rotation of the latter in the seam level takes place *

At present there ^is a mechanized <development> protection and support

(Ausbaugeepannen) known, which consists of individual and by-line members / A

The adjacent link of the mechanized extension contains a base plate, on the feet of which hydraulic rams are attached, and one

one
Cap, which consists of a protective part and / supporting part · With the

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Otherwise, the tfydxaulik stamps are attached to the protective part of the cap

The support part and the protective part of the cap are articulated, whereby a'Verschwerkai of the support part with respect to the deii Protective part around a joint rock parallel to the excavation face Axis is guaranteed.

room ■ The base plates of the expansion are arranged during dismantling in such a way that

because one end of the base plates is exposed to dismantling, the other facing the break. '

The base plate end facing the break is through a Traverse connected to the protective part of the cap.

^ see the hydraulic rams and the cross member is the cap protection part by: ^ joints connected to the base plate via two levers · One of these levers is designed as a bar and the other in the form of a strut. The strut has an additional connection mLt to the base plate at the attachment point of the second lever * ^:

The members of the series are 'united to' groups ^ between ·, '

see which support members are arranged.

the end :

Each support link has two or more row links

dern ", whose base plates are articulated with one another by means of strips! are connected. ':

The presence of an articulated connection ensures support members) a better adaptability / to sole unevenness. * ^:

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With such a construction of mechanized expansion the support members absorb the lateral pressure of the broken rock on each row member in the group at the successive posting. (Back) acts, u zw

starting from the "i- ^

lowest row link · in the collapse of the surface>

in each group ·; ■

This eliminates the risk of the members of the series falling over in each group. . . ■

The distance between the support members is chosen according to the geological conditions and depends on the angle of incidence depending on the seam * *

The number of of the row members in a group determined * When operating the row members in seams with inclined

^en ζ ι

But it occurs in struts with difficult to break ge ·

hanging hanging, which favors the formation of sections with unbroken hanging walls in the excavation space, jamming of the links and rotation of the cap with respect to the base plate · ... · .-.
In practice it has been shown that with difficult to

Broken hanging walls also have this phenomenon during operation

to observe of extensions in seams with a low angle of incidence /

In addition, for trouble-free operation of the expansion ■

(Move) .

during the displacement / a distance between the base plates

609886 / 07B6

copy

of the series members to provide there

one ■, ....

Base plate / heating link between the feed guides

arranged let «

one

Each base plate / accessory link lies with a

There is a certain margin between the funding developments that in turn arranged along the by-link base plates are · Therefore beinVersciiiebpn. the limbs

th

Often due to rotation and misalignment, an offset / the basic

watch flattening üusbau-Beihenglieder under the conveyor guides, thereby .Breaking the tours and thus operational

refractions -

ter / the mechanized expansion.

It follows that the existence of spaces is a Technological IT necessity is essential for an effective operation of the expansion guaranteed when moving.

As mentioned above, the size of the spacing is wxrd between the Heihen members through the width of the Fördoi-arführung and the size of the maximum permissible distances between the base plates of the accessory links and the delivery guide

In practice, however, it was found that the size of the .Abstands between the Beihenglieder η constantly changes and depends on the following factors:

\ en

- from slipping off the limbs. in the incidence of

Seams;

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- from the misalignment of the limbs in the event of a

Change of the seam hypsometry / χη ^β & η ^η ibschnitte ,, wo

are arranged to ^be

■ ·; are terms of the series in a group / and the presence / crushed muck at the bottom plates of the expansion-net members · Similar ^is "it t at the sections of the conveyor, mxt the <by hydraulic Verschlebewi nd> lie Beihenglieder of mechanized Ausbaues / connected. .

- from the rotation of individual Beihenglioder in the seam level with considerable side pressure from the broken rock *

Thus, in addition to the deficiencies noted above, the described mechanized expansion of the problem of increasing size of the distance 'between the adjacent members η in the group is not solved·

even
A mechanized expansion is known ₉ in which each

Row link is provided with adjustable push-pull props.

The adjustable straighteners are on the side surfaces of the base plate arranged at the end facing the break » Each push-pull prop is designed in the form of an elastic leaf spring with a convex outer surface

The adjustable push-pull props on the side surfaces through the baseplate of each row link, bind, secure the required size of the distance between adjacent base plates of the accessory links <The

adjustable supports of adjacent row linksJS arranged in such a way that their convex outer surfaces

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are turned. Such an execution of the Richtstützöo reduced the stress when moving the accessory links Sine reduction of the stress when moving the

into the
Members of the series is / special to observe,

call the next following series link, which in the collapse

of the seam is higher than that which has already been moved

the
Then, at the beginning of the advance, the end of the base plate j with its adjustable support slides on the convex outer surface of the lower row link and ensures that the end of the base plate j with its adjustable support slides at the beginning of the advance. . this is a shift of the base plate along the For the he guides. This prevents the base plate of the row link from sliding under the conveyor guide

two The setting of the distance between each / Heihen-

member / is reached 2. B ₉ by a wedge that forms the leaf spring

pushes away from the base plate / and thereby the width of the i

the latter enlarged, j

The lack of this slogan consists in a great deal of work wall to ensure a constant distance between all row members.

In addition, thanks to the arrangement of adjustable push-pull props bq on each row link the type of construction of the latter komes themselves

more complicated, and / more expensive / their manufacture · Dax invention is based on the task of irregular

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Push-pull props and adjustable straightening ε do ze η on support links

one

to arrange the η and Heihen members / mechanized expansion in such a way that a simple and reliable regulation of the arrangement of extensions in seams with an incidence angle of up to 35 * and

with hard to break Han *

sending is guaranteed

one

The stated object is solved in that in / mechanized construction, the R _e contains ihenglieder articulated at their base plates Stutz devices hinged to dea caps

are to be attached, and in which to groups series members / with Support members arranged between them unite sincj ^ the sus there are at least two Iteihen members whose base plates are hinged together, each row link

and support member on the side surfaces of the fracture facing Base plate end has straightening stubs. the Stüt # Lie4ern adjustable in relation to the base plate width Supports for a directional movement of the extension links are arranged along the working face in seams with an inclined dip

It is beneficial under complicated geological conditions with medium collapse of seams as well

for hanging walls that are difficult to break and for flat ones as well as for inclined seams to use row links that have two hydraulic rams, which at

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-βάθη base plate edges ίη? / " ^ηβΓ ζωί conveyor axis parallel 'plane are arranged ·

In favorable geological conditions ^ ^ie seams with bowed and shallow dip, with easy to break to bringendem hanging wall, it is advantageous to use a single hydraulic ram for the series element, which is articulated to the base "

plate and is attached in the protective part of the cap · j

the J

As a result of arrangements the series links of the mechanized.

Expansion> Irregulable calibration support? and ^ on. the support members> with respect to the base plate width adjustable propulsion <- ^v it is guaranteed that

(Back) JReihena) a directional shift, the / members in seams with

shallow and inclined collapse in the case of things that are difficult to break

Hanging walls,
one

b) / directed displacement of the links with changing seam hypsometry (contour line) and

c) there is no jamming of the links under different geological conditions.

The invention can be used at the current stage of development of the coal-winning unsi full mechanization to expand the hanging ^, in strive with inclined collapse and with difficulty to break applied hanging walls

In the following the invention is based on the description of a Embodiment explained in more detail with reference to the drawings. It shows:

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one

Fig, 1 / view, from .Abbaust03 from ^ defl mechanized expansion ΟΛ

one
Fig. 2/3 vertical view of a row link |

a perspective
3 / view of a row link;

βίμβ perspective
Fig. 4 / view of a support member j

FIG. 5 is a view of the arrangement of the support wages caps; FIG.
and series links / during normal operation;

a Fig. 6 de construction / irregular Rioht-

support ;

through a

Fig. 7 de construction of a / wedge adjustable Sight support;

one

Fig. "8 de construction of a durdq ^ ciujaube and

A ine
/ Nut adjustable straightening scoop;

g 9 a view of the arrangement of row

(without caps)

articulate / in relation to supporting limbs with extreme limbs

Twist that requires distance regulation}

the
Fig. 10 Arrangement (without caps of the series members of the

Expansion prior to postponement;

the
E'ig 11 / arrangement ^ (without capping the series members of the

«-Γ
Expansion.after the postponementi

one

Fig. 12 view ^ of the working face ⁵ * of a row link with a single hydraulic ram 4- ?.

The mechanized expansion contains united into groups

(4usb. Eye span)
Series members 1 / (- "Ig * 1) and standing between the groups

Support members 2

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"Every row link 1 of the mechanized extension (Fig. 2,

contains a base plate 3 with 4 hydraulic

one

stamp 5 are articulated, one from / protective part 6 and one one

/ Support 7 existing cap and / hydraulic winch 8 for moving the row link 1 _#

With their other ends are the Hydra uliks te mpe 1 5 am

The protective part 6 of the cap is hinged to the base plate 3 lies.

Due to the articulated connection of the support part 7 with the protective part 6 of the cap is a fluting of the stepped part 7 guaranteed with respect to the protective part 6 about the axis 9, which runs parallel to the seam and the working face 10.

The end of the base plate 3 resting against the break (not indicated in the drawing) is supported by a cross member 11 connected to the cap protection part 6.

The traverse 11 is designed as a plate / attached to its

Lower and upper part each has two joints 12 and 13, which with the base plate 3 or with the cap protector 6 are connected.

Between the HydraulikstempeIn 5 and the crossmember 11 is the Kappensohutzteil 6 by two levers 14, 15 connected to the base plate 3 · The lower ends of the levers 14, 15 are hingedly connected to the base plate 3 ', the upper ends of the levers ge "articulated manner to the cap protection part 6 connected «

609886/0756

One of the two levers and between the lever 14 is as ! «One and the other 15 in the form of a strut to secure the additional connection 16 between the base plate 3 and levers

Each support link 2 (Fig. 4) consists of two series links

^/ \ ₎ whose base plates 3 are connected by joints 17 and strips 18

are bound. The presence of joints 17 provides a true one better adaptability of the base plates 3 to unevenness!

ten of the rock. [

By such a type of mechanized expansion the support members 2 against the row members 1 in the group

lateral> tilting when using the row links 1 in one down- .stronger

construction joint with / inclined α collapse of the coal seam.

The distance between the support members 2 is selected according to the geological conditions and is dependent on the angle of inclination of the seam.

The distance between the support members 2 determines the number of the series members 1 in a group.

^ wipe the base plates 3 of the support members 2 and row members 1, a distance h is provided for the arrangement of a conveyor guide 19 (FIG. 5). The conveyor guide 19 is arranged along the link base plates 3

The size h of the distance between the base plates 3 the row members 1 and support members 2 is determined by the width of the For he guide 19 and the size of the minimum allowable

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The distances between the base plate 3 and the conveyor guide 19 are determined « '

To maintain the required distance between the

1 ~

Base plates 3 of the row and support members 2 are on the Heihen-j

(Abutment)

structure 1 non-adjustable push-pull prop u / 20 and on the support members 2 adjustable organic props <21 arranged «

The irregular push-pull props 20 and adjustable
Push-pull props 21 are on the side surfaces of the base plates 3
arranged at their ends opposite to the request ζ «

The irregular push-pull support & n. 20 are shown in FIG
Projections executed · The adjustable push-pull props, 21 can
Their design can be different. The adjustable straightening supports can be, for example, as a leaf spring 22 and can be displaced
Wedge 23, as shown in Fig. 7, can be executed. 'The sliding wedge 23 spreads during its movement / ibwarts-die!

i leaf spring 22 in relation to the base plate 3 "with which the width '

the base plate 3 is enlarged «|

Another version of the adjustable push-pull prop <

separate j

cA is shown in Fig. 8, where the supports as / detailed

segment 24 is carried out, which is cushioned by a spring 25 and in the direction of a ^s

, the width of the base plate 3 by / üchraub and / nut 26 j

is spread. :

The adjustable push-pull props 21 (Fig. 7, 8) and the
Irregulable push-pull props 20 (FIG. 6) are preferably designed with a convex cylindrical outer surface.

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The width of the adjustable calibration nozzles 21 (Fig. 7, 8 and the irregular Richtstutzp ™ 20 (Fig · 6) is dependent on selected from the required distance h between the base plates 3 (Fig. 3) of the row members 1.

Thus aind the outer surfaces of the adjustable Richtstiit- ZBN 21 and the unregelbaren .Riehtstutzan 20 arranged at the base plates 3 that they are with their convex outer surfaces face each other ·

Inter-die in this way in the / spaces between the base plates

3 arranged adjustable and non-adjustable straightening nozzles

21 and / or 20 ensure that the expansion series is set up ._>
members 1>'of he / position "with respect to the conveyor 27.

An intermediate space h (jj'ig · 9, 10) is to be provided between the push-pull props, which is necessary to compensate for the change in length ^ ¹¹¹ collapse ^ in the groups of the row members 1.

The capital h is the number of series members in one

Group dependent and aliquot with respect to H , where η

η- + 1 equals the number of series members in a group and H equals.

that of the permissible size of the distance between / base plate 3 a

Series link 1 and d <= r För he leadership 19 is in which the

Danger, a.a2 the base plate 3 venter the guide 19J>

<-;> device, when swiveling the extension series link 1 / does not exist « The change in length ^ in the collapse ^ of a series link group ^

609886/0756

depends on the following facts «

- from slipping of the row members in the collapse of the Seams,

- From the misalignment of the R _Q ihenglieder when changing the

(7-height line)

Seam hypsometry / in the ^ sections where the series links are arranged
in / group / as well as > that shredded heap under the basic

of that,
plates of the extension links device * It is similar with the sections of the conveyor, with which the hydraulic "sliding winches> the ^ in-line links of the mechanized

are connected to the last expansion «

individual

- From the SchwenkBD of the / row members in the seam level

in the case of considerable side pressure from roof layers that have already broken

Which operates from the point of view of a disruption-free operation Favorable arrangement of the expansion series links / in Fig. 5

The row members 1 are arranged in groups in such a way that a distance h between the working surfaces of the non-adjustable supports 20 for possible regulation of the position ^dej? Series elements 1 must be provided when the above factors occur

The distance h must also be observed between the adjustable push-pull prop 21 and the non-adjustable push-pull prop 20

During the operation of the expansion * is usually

observed an arrangement in the system of the series members 1, the limit position of which is shown in FIG.

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Reaches the size of the gap between the top

Row link and the conveyor guide 19 the West H, as is

Oflücken) ^ ~ ^

at the next transfer / the risk that the base plate 3 of the upper extension row link 1 under the conveyor guide 19

In order to rule out such a phenomenon, the adjustable aligning support 21

on the support member 2 spread ·, the row members 1 are attached Shifting is oriented and ensures normal operation of the extension C deleted position of the series links in Pig, 9 » the collapse of the seam is indicated by the arrow)

x ^ urch the execution of the outer surface of the adjustable unc Irregulable aligning supportYes 21 or 20 convex * becomes

the stress when moving the row links 1 is reduced, Line particularly significant reduction in stress Moving the row link 1 can be observed

Reihfnv; enn the next following link 27, as shown in FIG

is which in the collapse of the seam * is higher ^ in relation to

which the already displaced series link 28 ^ ~ ^, under / influence of the Twisted collateral rock in the seam plane that had broken down becomes · Then at the beginning of the displacement the one facing the fracture slides End of the base plate 3 with the adjustable support 21 on the convex outer surface of both the adjustable Support 21 as well as the irregular push-pull support 20 of the lower supporting member 2 or of the row member 1 and

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This ensures a displacement of the base plate 5

along the conveyor guide 19 and an arrangement of the base plate 3 in the normal position, as shown in Fig. 11 · This prevents the base plate ο of the row link 1 \ from sliding under the conveyor guide 19:

In each group of members the first thing is;

.. at the .
the support member 2, which is low in the collapse of the seam,

displaced · The support member 2 is moved into the normal position; pull on the conveyor 29 \ l by a pair of hydraulic shifters. overcome 8 brought «

! laughs at the displacement of the support member 2 and the .arrangement
his

in Jwormalßteliunr; it serves as an orientation base for the
higher rank members in the group

According to the idea, the mechanized expansion by Biele

■ Extension members formed, which are united in groups and

here
be arranged between the support members 2. De / ansenomae-

ne. arrangement of the adjustable and non-adjustable straightening rod

ZiJU 21 or 20 is also in the presence of only one hydraulic ram in each heating link according to FIG. 12
possible.

Thus, according to the invention, the arrangement ->

adjustable nozzle on the

Support links and irregular ones on the row links

effective operation of the expansion guaranteed, u, zw · as a result

the
application of simple construction a. and operational

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safe means. for the automatic control of the expansion

^en members that are likely to have a / negative influence from Hatur

factors to prevent.

609886/0756

Claims (1)

EZ / B Ap Mechanized expansion with series links the base plates of which are articulated hydraulic rams, which are hinged to the caps, in which the accessory links to ^: there
Groups united with intermediate support members the end are who / at least two accessory links "order their reason plates are hinged together, each j Loan link and support link on the side surfaces of the fracture side .. have a round plate end of push-pull props, rjarinrcfr p; aV (^ a nzeich “ that on the height members (1) undisclosable sight supports (20) and on the support members (2)? with respect to the base plate width vers divisible view support η j (21) to the directed back of the extension links along the quarry in seams with inclined dipping _; are arranged 2 · Mechanized expansion according to claim 1, characterized in that strainer members are used which have two hydraulic stencils O), which at the Rändarn one the base plate G) are arranged in a plane parallel to the conveyor axis _e 3 · Mechanized expansion according to claim 1, characterized in that κθ-Vflrmzpiichneft _T that series links are used, which have a single hydraulic ram (5) that is articulated attached to the base plate (3) and to the protective part (ö) of the cap is" 609886/0756