DE3150644A1 - Chain pawl stop for a sprocket drive, in particular a plough drive - Google Patents

Description

PATENT LAWYERS "θΊθϋθ44

DlPL.-ING. BUSCHHOFF
Dip L.-In G. HENNICKE ,

DlPL.-ING, VOLLBACH ^ "

KAISER WILHELM RING 24

5000 COLOGNE 1

Registration number. Act:

Gw 8186 j Cologne, December 8th, 1981

please enter VO / kr

Westfalia ironworks,

p for a sprocket drive, in particular a planer drive and the like.

concerns a chain backstop for one Kettearadantrleb, especially for a chain-pulled one

with one the sprocket when tensioning the chain

Rüeklamf blocking locking device

@ ± a © r endless plow chain as well as when closing H @ bellj: @tte or also when tensioning the ho- Z \ f <3Qte & the chain shortening or chain loss, it is common to open one end of the chain by means of a F @ sts © trirorri «htBBg and then the plow chain driven plow chain wheel so under chip that when the chain is open the chain ends or that the closed chain, where it is to be opened, is relieved of the saw chain. When the »bucket of open planing chain is used or at the local Satla @ t @ B the endless planing chain for the purpose of opening the

Planing sprocket with a return, which causes the testicle to return a sudden relief of the standing chain prevents. At a

of this type there is a special holder on the planer-planer box using clamping screws on the planer box

* * * · * "· * Ι Qi cnc / /

Ironworks Union Wes-έίal'ia JIOUb ^

GW 8186

is secured and parts of it grips like a hook (DB-GM 19 70 539) · A pawl is pivotably mounted in the holder, which is inserted into the Locked position is pressed. The pawl and the leaf spring package together with the bracket form a closed structural unit that is subsequently attached to the lever box as a whole is attached

In another known chain return lock for one Planer drive is the pawl, which engages in the locked position in the planer chain wheel, stored in a hook bearing, which is an integral part of the planer box and consists of a shell-like pivot bearing into which the pawl can be used (DE-PS 21 48 818). Hit pawls will also lock working chain return runs other chain drives, especially with chain scraper conveyors and the like, mainly used in underground mining operations are used (DE-Gl! 18 77 974)

The pawls help ensure that the pre-tensioned chains are held securely during the assembly process mSglioh · In The locking position is the pawl in a horizontal chain link of the chain section lying on the sprocket of the round link chain so that, for example, in the event of a shear bolt break, the pretensioned chain is secured against backward movement If, on the other hand, the pawl is on a vertical chain link of the chain section lying on the sprocket If the chain rests loosely, it is not guaranteed that the pawl will engage securely when the chain is running. Of the So-called risk path, the sprocket and thus the tensioned chain during the tensioning process until the pawl engages can cover, is with the well-known Kettenrüoklauf locks, in which the pawl engages in the chain lying on the sprocket, ratio "" Big large.

is to use a chain backstop too increased puncture »and operational»

"with the above all the chain locked against backward movement on the sprocket

Mfgali © is solved @ v £ is & ungsgea & 8 in that ait © in the ring gear or the like, rotatably connected, is Gahnteilmiig smaller than that of the sprocket Spe £ T @ rgan can be introduced "

this KettcBrOtiklmf locks the with de »driven For the sprocket, the tooth thickness is smaller is called that of the chain »in the case of the use of a pawl © rheblieh averted risk path up to » At the same time it is ensured that the pre-tensioned chain is reliably released by the locking device »

Blit &<6F invention will therefore increase the chain back "in terms of iterations" and operational reliability.

Eisikoweg up to reaching the rear ₉ if a ratchet wheel is used in a further refinement of the control element, kiss with the ring gear * Since the ratchet can get “islei”! the Ket »Moklaufrichtung is effected, while the rotation» remains unlocked in the tensioning direction · can be switched over in two ways.

Bisenb & tte Weitiaiia union ^: * '"·' ^: · 3 1 50644 8186

The sprocket of the chain anti-reverse is expediently to the side The chain wheel, preferably exchangeable, attached » In this case, the chain wheel is advantageously provided with an annular side recess for receiving the toothed ring instead a simple sprocket can be used for the chain backstop but also a gear, a toothed washer or the like. be provided which or which aa üafang the ring gear carries «through the lateral arrangement of the gear rim or the like. the overall width of the sprocket is increased insignificantly

The locking member or the ratchet wheel is expedient on one Arranged swivel arm, which with a »planer drive on Lever box is stored and in its working position ζ · Β · by means of a locking bolt or the like. lockable 1st. To prevent the chain from jumping out of the sprocket, which is locked against reverse rotation, it is advisable to use the Swivel arm to arrange a hold-down device, which looks in the locked position over the sprocket or * over the one on the sprocket lying chain. In a structurally simple manner, the hold-down device can be removed from the one receiving the Ratsel @ nsperre Housing be formed

In the drawing, a preferred embodiment Λ & Τ invention is shown in the form of a plow chain backstop.

Flg. 1 a chain return lock according to the invention in Side view of a planer box}

Pig 2 is a plan view in the direction of arrow IZ in FIG Fig. 1 j

Flg. 3 shows a section along line IH-III of FIG. 1 Union Sl® @ ®M * te »estfalia

Di © «shown KebeXfcetten backstop is arranged on iron planer box 10 of the driven Hobelkettesrad 11 receives TMAE usually at the one sides and as © ^ld®6iii> ahaens of a chain scraper conveyor which also Anan the planer drive grown

Bas Mofeel sprocket 11 generally has six or seven bolts 12 amf ₄ . Bie & h * r the Hobelkettenrad 11 heroß ^ e ^ l as ndgliederkette formed plow chain is 1 b @ i indicated by dashed lines. 13

Cone sprocket 11 Is a sprocket 14 on the side, e.g. mitt @ l @ @@ hr $ & taa ISsbar attached * The planer sprocket 11 shows @@ itli @ k a® rissgfuralge Ausnehsong 15 for the Auf ™ lal ^ lranzes 14 auf (Fig · 3) · At 16 the Zainkranzes 14 designated. The tooth pitch of the is considerably smaller than that of the ket ~ 11 «BeagesSS, the chain ring 14 indicates a rise Teeth 16 on as the sprocket

In a joint 19, a swivel arm ° ″ d © r at its free end as a locking element is a Rat-21 carries »whose axis of rotation is parallel to the joint

19 and accordingly also runs parallel to the chain wheel 11. The ratchet wheel 21 is stationary his IMfaagarerzalmung 22 in tooth engagement with the front « 16 <i © s lshsSep®iszes 14 »when the swivel arm 20 in pivoted 1st In Fig. 1 the rest

S @ h! I $ nkarmee 20 indicated by dash-dotted lines

the swivel arm is supported against 3 of the planer box 10 · In the workhorse Sohwenkare can be locked using a Versa planer box 10

Vesfcfai'ia Ironworks Union ^: " ^: " ■ "··""· 3150644 Gw 8186

Oils the ratchet wheel 21 associated ratchet lock is located calibrate in a lying next to the guessing wheel 21 Housing 25 · The arrangement is such that the housing 25 is in the locked position of the chain return stop the chain wheel 11 and the chain links lying on it the edge link chain 13 engages over and thus, as a retainer, the chain jumping out of the tooth engagement prevented with the sprocket 11. The council lock is in well-known catfish designed so that they use the ratchet wheel 21 blocks in one direction of rotation, while turning the Ratechenrades 21 allows in the other direction of rotation.

Zn Fig. 1 is the direction of rotation of the plow chain wheel 11 at Tensioning the plow chain 13 indicated by the arrow 26 The * This direction of rotation is determined by the meshing with the gear rim 14 stationary ratchet wheel 21 not locked · The reverse lock blocks the return of the planer sprocket 11 in Opposite direction, in the illustrated example, counterclockwise, so that a sudden relaxation of the Plow chain 13 is prevented, e.g. in the event of a break in the shear pins arranged in the drive of the plow chain wheel 11. Since the council lock has a very small viewing barrier, an immediate locking of the Planer chain wheel 11 reached via the Ratsehenrad 21 and the ring gear 14 «The ratchet lock is with a Ώ * - switching device provided, by actuating it see the Release backstop ISSt. As during the chain tensioning process the ratchet wheel 21 in constant engagement with the ring gear 14, the safe function of the chain return lock is guaranteed.

Instead of the preferably used guessing wheel · «21 knew but also locking devices of other types, e.g. spring-loaded locking pawls of the conventional design, are used,

BisenfeStte Westfalia trade union 3150644

3136

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the hit of the ring gear 14 zueejmemrirken · The described Chain backstop is also available for other chain drives, Can be used in particular for tensioning the chains on chain scraper conveyors of the like.

Claims (1)

Expectations K @ tt @ mH © run lock for a chain wheel drive, especially a chain-drawn coal plane, with a sprocket when tensioning the chain against reverse rotation locking locking device, thereby g e kenaseiehnet that with the sprocket (11) a ring gear (14) or the like. is non-rotatably connected, whose pitch is smaller than that of the chain wheel (11) and into which the locking member (21) can be introduced. & ®ttmg ^d & dkl®! & £ lock according to claim 1, characterized in that the locking element (21) consists of a ratchet wheel. on lock according to claim 1 or 2, since - u τ eh indicates that the sw, the ratchet wheel (21) on a swivel mm. (20) is arranged. according to claim 3, characterized Trade union Eisenhütte Westfaüa ".31-50644 GW 8186 characterized in that the swivel arm (20) can be locked in its working position 5 chain backstop according to one of claims 1 to 4, characterized in that the toothed ring (14) on the side of the chain wheel (11), preferably exchangeable, attached 6 «chain return lock according to claim 5, characterized characterized in that the chain wheel (11) is provided with an annular side recess (15) receiving the ring gear (14) 7 chain backstop according to one of claims 3 to 6, characterized in that a hold-down device is arranged on the swivel arm (20) over the chain wheel (11) 8. chain return lock according to claim 7, characterized in that the hold-down device is formed by the housing (25) receiving the ratchet lock. 9. chain return lock according to any »of claims 2 to 8, characterized in that the Ratchet lock is switchable.