DE2806828C2 - Guide for cutting chains - Google Patents

Description

Drawing shows

F i g. 1: a side view of a cutting arm;

Fig. 2: a section view of one in a guide
running cutting chain in a cutting gap;

FIG. 3: a side view of FIG. Z 5

One shown in FIG. 1 shown cutting arm has a as
Cantilever plate executed guide carrier on
the scope of which individual guide strips 2 directly
are then releasably attached to each other and one
Form guide for an inclined chain 5, which is attached to the io
Ends of the arm over a drive sprocket 3
or a pulley 4 is running. The Schrämarm will
including reinforcement plates 6 on one not
shown cutting machine attached

Chain links 7 of the 15th chain studded with cutting elements 8
Schrämkette 5 are in an outwardly open
U-shaped guide profile 9 in cross section
(compare Fig. 2) H-shaped guide rails 2
guided. Each guide bar 2 is in the longitudinal direction
continuously divided into two strip parts 2a, Ib , which are under 20
Release a parting line 17 opposite one another.

Inward facing legs OK, OK? the
Guide rails 2 are attached to one using screws ΐΐ
central web 16 of the guide support 1 in FIG. 2 25
apparent manner releasably attached. The screws 11
each extend through a ronic bore 12,
in which the screw head rests, in the leg 10a as well
through a hole 14 in the web 16 into a threaded hole 13 in the leg 10b. 30th

Between the legs 10a, \ 0b and the web 16
AreJewei's spacer plates 15 are arranged, by means of which
the opening width of the guide profile 9 is the respective

Is adaptable to requirements. The spacer plates 15, which consist of individual easily detachable layers and which initially have a thickness of approx. 1 mm with an opening width of approx. 22 mm of the guide profile 9, while the parting line 17 is approx. 2 mm wide, are used primarily to adjust the bar parts 2a, 2b after, namely to restore the original opening width of the guide profile 9 if wear is found on the sides of the guide profile 9, which leads to an undesirably large play between the chain links 7 and the guide profile 9 Guide bar 2 released and one or more layers removed from the spacer plates 15 in order to compensate for the wear and tear that has occurred and to restore the original opening width of the guide profile 9. As soon as the strip parts 2a, 2b are firmly screwed again, the cutting arm 1 can be reinserted in the kerf 5 without the cutting chain 5 being able to deviate from the desired straight-line running. The dividing plane of the guide members 2 does not necessarily have to run in the middle. It is, for example, also possible to assign the central web of the H-shaped guide member 2 to the left or right groin part 2a or 2b and to end the central web at a corresponding distance in front of the other groin part to form the necessary variable parting line. It is only essential for the construction and execution that the inclined chain 5 is given a safe and adaptable guide in the event of wear, with guide members which can be partially and safely attached to the guide support 1, preferably screwed.

1 sheet of drawings

Int. GL: E 21 C25 / 30 Publication date: 11/11/82

Patent claims:

the chain has an exact guide again.

The breaking of coal and other materials does not require the guidance of a cutting chain particularly strong, in any case the cutting forces and thus the wear are around one Several times less than with a stone cutting machine, so that it is in contrast to stone cutting machines Booms for breaking coal and other materials more through continuous operation comes to a uniform ß l d entire management and

1 guide for a cutting chain running around a cutting arm for stone cutting machines, consisting of a large number of guide strips that are directly on the circumference of the cutting arm adjoining each other as well as individually detachable

attached and with an outwardly open U- örrn.gem _{uauerDelIlcu,. u} "...- .." - -,

Guide profile is to hold the rotating mehr_d ^{ch d} ™ ^u _{rf th leadership} and

Schrämkette and with inwardly pointing io ^^ '^ hni ^ eiscn deterioration of the legs for attachment to _emem ^ part mchnw «n« ^. ^ Wear from de _Se m

Are basically boom whose ^{H, au} P / ^b, f ™ ^ _n distance variable halves bestehL: ^{for Ste} ^ shearers not _verwendb "^ D" Jurjas

«Disregarding My RuiitiK" «- ·" · "~

But still uneconomical because the expensive ones Futungists after oem Vj ^^^ nS zefchneü "d" äß between the inwardly extending ""! "^" JS ^ JhiSng ^ ekwn 'only a slight

tttäX ^ W ^^ "SZ-ZZ ^. __.

3 guide according to claim 2, characterized in that the spacer plates (15) are multilayered are formed and the individual layers are easily detachable from one another.

4. Guide according to one of the preceding claims, characterized in that the legs (10a, IQb) on the sides of a centrally on the circumference of the guide carrier (1) extending

. ■. I 1 ..Ut C-Jn ₁ -I

Thighs to tteiesuguug au & mv> ·· ^ ......... Q- ..

Guide supports of the cutting arm are formed, characterized in that each guide strip (2) is continuously divided in the longitudinal direction and each Leis'.entp.ilenaar (2a, 2b) is attached to the guide support (1) such that it can be spaced apart from one another.

2. Guide according to claim I _1, characterized in that between the inwardly extending drive duration reach.

It is therefore the object of the invention to provide a guide for a cutting chain on a stone cutting machine to propose which is reusable after a first period of wear and therefore a more economical one Exploitation permitted.

The invention consists in that each guide strip is divided in the longitudinal direction and each pair of strip parts The distance from one another can be changed on the guide rail

are placed on the circumference of the guide support () web (16) and screwed.

to one
ger is attached.

With the help of the invention it is possible, if necessary, to hlit so far together again. With the help of the briinaung gciiu ₅ i v ..,

move certain guide strips together again so far that that the resulting U-shaped guide profile again causes an exact chain guide. Different than with machines for crushing coal and other materials is the selective readjustment of the guide possible, so that preferably worn points of the guide are also specifically readjusted and thus the impending disruption can be eliminated. In addition; "" r-iictnn-rnlatten between them

The invention relates to a guide for a cutting chain rotating on a cutting arm for stone cutting machines, which consist of a large number of guide rails on the circumference of the Schramarmes immediately following each other as well as

individually detachable and with an outwardly open aioru .. «u« ... ^

U-shaped guide profile to accommodate the umDann _{jse spacer} | _aU en between them

current Schrämkette and with inwardly facing 40 ^who ° ^e "extending leg and the guide legs for attachment to a one-piece" ^ '"",_"that are seen _{for sic} h known and are ausgebüdet on guide support of the cutting arm L" _since her no Element protection is directed.

From DE-PS 12 10 395 a leadership for ^died f. ^ ", _{Of the} guide profile u.förmigen n cutter chains according to the above type is known in which what« j- ^ _{target. Profile can at the} installation

the individual guide rails either in one piece or 45. ^lne ^ J _r f _s ^r _chrammasc into without special special work in several parts. in each case with a fixed width ^d ^; _p ^te '_{"who performs} the ™. The adjustment can the opening of the U-shaped guide profile excluded ^ze" £ "^ FFFO _{Leen s0 as} ß one and the same Fflhnn.rfslei-

Leads are especially great when cutting very menstrual sheets. "". ,,. ,.; «", """,. _fnr

hard rock containing silicate or quartz the lateral guide surfaces of each guide rail high pressure and correspondingly high wear suspended As a result, leadership is weakening a certain operating time left to be desired, so that the cutting chain is inclined in its leadership and thus "runs" as a whole, i.e. no longer follows the intended course of the cut. In this In this case, the guide strips affected by wear must be replaced as a whole with unused ones. Furthermore, from DE-PS 5 67 669 a boom for a cutting machine for breaking coal eo or other substances known in the case of uniform wear along the entire

_{Guide track} through the two halves of the boom - llluulJl. _u ...

Removal of the web located between them applied "" ⁰ ^ ¹ ^ ¹ ; _he two halves of the intermediate plates are moved so close to each other again 65 fixing and easy assembly ^ ^be that the wear is just compensated

nsnQcn is.

mXaÄen. His and the same FOh ^ IeJ-s ^ e or one and the same pair of guide rails for ste and _{ioden are} available. on

the specific occupational

"'""' Ä ""with the same manufacturing costs for most of the _others, since with the same drives.

In order to simplify the adjustment even further, it is provided in a development of the invention that the Spacer plates are made of multiple layers and the layers are easily detachable from one another ise are made of brass or steel: Spacer plates are used, which are placed under the ._ .. ι Laminum are available, the legs are moderately on the sides of a in the center of the circumference of the guide beam running web and screwed to a clear

Claims (4)

Patent claims: 1. Guide for a cutting chain for Steinschneidmas.hinen running around a Schräma rn, consisting of a large number of Führunfilei- τ, which are attached to each other on the circumference of the cutting arm directly and individually detachable and with an outwardly open U-shaped guide profile for receiving of the surrounding cutting chain and with inwardly ironing legs are designed for attachment to a respective guide support of the cutting arm, characterized in that each guide bar (2) is continuously divided in the longitudinal direction and each pair of bar parts (2a, 2b can be adjusted in terms of distance from one another on the guide. gträger (1) is attached. 2. Guide according to claim 1, drJu .. characterized in that between the si'π πα ~ π internally extending legs (iOa, ίυί) and the guide support (1) spacer plates (15) are inserted. 3. Leadership according to claim? characterized in that the spacer plate (15) is multilayered are formed and the individual layers are easily detachable from one another. 4. Guide according to one of the preceding claims, characterized in that the legs (10a, lOtyan den side one in the middle of the circumference of the guide support (1) extending web (16) are applied and screwed. jo The invention relates to a guide for a cutting chain running around a cutting arm for stone cutting machines, which consist of a large number of guide strips which are attached directly to one another and individually detachable on the Urr «ing of the cutting arm and with an outside U-shaped guide profile Recording r : r all-round inclined chain and with inwardly pointing legs for attachment to a one-piece '.' Guide carrier of the cutting arm formed sinr From the Ti-PS 12 10 395 is a guide for Schrämketter known from the above type in which the individual guide rails are either one-piece or in several parts, 'each case carried out with a fixed width of the opening c ^ s U-shaped guide profile are. Especially when cutting very hard a Rocks that contain silicate or quartz are those Lateral guide surfaces of each guide bar are exposed to high pressure and correspondingly high wear. As a fig of this leaves the guide after a certain Operational time left a lot to be desired, so that the chain is inclined in its guide and damn into / .total "runs", so no longer the intended one. The course of the cut follows. In this case, the guide strips affected by wear must go through as a whole 'used to be replaced. Furthermore, from DE-PS 56 76 66Ö a boom for a cutting machine for breaking coal or known to other substances, in which after uniform wear along the entire guide rungsbahn the two halves of the boom by removing between them between them again so close to each other that the wear is just compensated and for the chain has an exact guide again. The breaking of coal and other materials does not place particularly high demands on the guidance of a cutting chain; in any case, the cutting forces that occur and thus the wear are several times lower than with a stone cutting machine, so that, in contrast to stone cutting machines, booms are used to break ₁ coal and others Substances come to an even wear along the entire guide due to continuous operation and not to a partial deterioration of the guide for the chain as a result of wear. For this reason, booms, the main part of which consists of halves that can be spaced apart, cannot be used for stone cutting machines. The cutting machines designed for cutting stones are, however, still uneconomical, since the expensive guide strips have to be replaced by unused ones after they have worn out, so that the guide strips, which are made at relatively high costs, only achieve a short service life. It is therefore the object of the invention to provide a guide for a cutting chain on a stone cutting machine to propose which is reusable after a first period of wear and therefore a more economical one Exploitation permitted. The invention consists in that each guide strip is divided in the longitudinal direction and each pair of strip parts is attached to the guide support such that it can be spaced apart from one another. With the help of the invention it is possible, if necessary, to move certain guide strips together again so far that that the resulting U-shaped guide profile again causes an exact chain guide Anders than with machines for crushing coal and other materials is the selective readjustment of the guide possible, so that preferably worn points of the guide are also specifically readjusted and thus the impending disruption can be eliminated. For this purpose, spacer plates are preferably placed between them placed inwardly extending legs and the guide support, which are known per se and on which is therefore not directed against element protection. The adaptation of the U-shaped guide profile after wear to the target profile can be done on site the slein cutting machine without special tools are executed. The readjustment can take place several times, so that one and the same guide bar or one and the same pair of guide strips are available for several periods of wear. on In this way, the specific operating costs are reduced, since with the same manufacturing costs for the Guide strips as before, much longer periods of operation can be achieved. To simplify the adjustment even further, isi In a further development of the invention it is provided that the spacer plates are multilayered and the individual layers are easily detachable from one another. Preferably made of brass or steel existing spacer plates available under the trade name Laminum, The legs are expediently on the ropes of a centrally running on the circumference of the guide beam The bridge is laid out and screwed to allow a clear definition and easy assembly of the two halves of the Guide rail aiii Fühfungstfägef to reach, An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. In the