SU28000A1 - Differential winch with friction drum - Google Patents

Description

The proposal aims to eliminate the defects inherent in well-known friction drum winches (spiers and driving pulleys), in which the use of special auxiliary forces, for example counter-loads, is usually required to create the necessary friction forces between the drum and the rope. The latter circumstance has so far made it difficult to use winches of this type for moving installations and, in particular, for the horizontal movement of cargo.

 The invention eliminates this defect by the fact that both vetei of the rope adjacent to the friction drum, i.e., and the incidental and escaping branch are affected by the movable load. For the e-go, the load is suspended from a holder provided with a roller, which is supported by two branches of the rope, of which || ; it goes directly to the drum, winch, bends around this drum and covers the roller of the auxiliary movable unit and its end is fixed to a fixed point; the other branch is directed to the said auxiliary movable block and its end is fixed on the cage of this block. Due to such installation of the ropes, the following effects are achieved: 1) the rope branch that runs and fits the friction drum is always under pressure, proportional to the size of the load being moved; 3) in mobile assistance: unit

when the winch drum rotates, it moves at a speed proportional to the speed of the rope branch that runs onto the drum, and tightens or stretches the load-carrying loop; 3) the branches of the hinge supporting the roller carrying the cage, have during the rotation of the drum neodi-. nakovuyu speed. The first of these circumstances allows the winch to work normally without the use of external auxiliary forces to prevent the ropes from slipping on the friction drum, the second provides automatic cleaning. ropes, unwinding from the drum when the load carrying loop is tightened, and the third; determines the differential character of the winch work.

As a friction drum. in the proposed winches, not only any of the common types used in spiers can be applied, but also a drive pulley or a combination of several leading shchivki.

The increase in the compactness of the installation and the approaching speed of the front load to the peripheral speed of the friccid drum are achieved by using an automatic cleaning of the vegvi rope, which is thawing from the friction of the drum while tightening the load-carrying pegla, Lispast instead of a simple rolling ,, block.

New in the invention, deserve -. schim osozhege. Attention is also given to a special form of execution — a winch, in which to bind and move the end of the rope, around the roller of the movable block or the pulley roller, intended for automatic cleaning of the stretch of rope. with . FRICTORIC DRIVE. tightening the load-carrying loop, njJHMen (auxiliary non-friction simple drum. This auxiliary non-friction drum can perform various functions. It can serve to increase the compactness of the installation, playing the role of an accumulating drum, actively participating; It is a fact that the circumferential speed of a non-friction drum may differ from the peripheral speed of the FF. PUMP drum within known limits I. This is explained by the presence of a block in the Loivi5Cyago system, keeping under tension of the rope lan rk connecting the frik.tsionny drum. friktsyoknym not Bp mozhn1e movement of the movable unit serves to kmpensatsii difference in circumferential speeds of both reels.

Owing to some independence between the circumferential speeds of both drummers, they: can work not only simultaneously but also at different times, which can easily adjust the speed of movement of the working load and, consequently, the power required by the winch. A non-friction drum may in some cases play only the role of starting fur, 4m, especially valuable when using a winch for horizontal displacement. cargo. Not friction ba) rgban, at the discretion of the designer, can either have an independent drive

By kinematically coupled with the drive of a friction drum. 10 Verb: The th case may find a particular distribution, as a simple decision. On the use of a non-friction drum as a trigger for a friction drum.

 Figure 1 shows schematically exemplary embodiments of the invention; FIG. 1 Shows the scheme dife)} ents | flax winch with friction 2 - installation option

t podipaspfl with a moving

  . ; i3i, ffrv. „,: H:

Dvuhrolny block; FIG. 3 is the same with the M-filling of the friction drum as the leading chamfer of FIG. 4-diagram of the installation for the horizontal movement of goods with the use of additional directions | tsego blok fyg, 5-6y): unit setup in FIG. 4. for moving loads in the vertical direction. : And for a winch to move: cargoes, 6 in the vertical direction (fig. Friction drum 7 is gripped by a rope, one BiSTBb L is cotrbrr, bend the guide roller unsupportably locked captive obrim 5i goes down (to the cargo block in the holder 2 and, forms a weight-bearing branch 3-4, section 4 of which goes back to the second roller on the stationary holder 5 And the dilee: K;: reboime;: The sliding roller 7 / on which is fixed 1. The roller / is covered by a loop of the section, 6 ropes, walking horn frikts ion 6apa6iaH9 L: with the free end of the rope is fixed. 5,:,, Vv When the 7 PR drum rotates at the position indicated (in the drawing of arrows M f, the branch 3 of the rope winds up, rolls onto the drum / and rolls, automatically moves; block 7 automatically performs the need for tension i cleansing the rope section, from b1b1bw from baraeena /. So the branches 3 .4 have T, with different clumps, the load carrying loop loses, and the load P rises. When suspended, the drum 7, .W:, p .beam is carrying a load-carrying loop, 5- and a load P is also expanded. is omitted,. .

FIG. 3 friktsirnny b araban; B1-1 filled in the form of a leading pulley. in the case of FIG. 3 Net} The Genie Upriste 5 cannon is only a time; two times more nat}} e -: neither the uchartka kanta, then with the appropriate profile of the like panther of the harmony of his job. In general, the number of leading shchivs necessary depends on their professional profile and on the throat between the tension of the oncoming and escaping from the ropeway of the ropeway.

In order to obtain a brute comteer for the entire CHCTpfibi loop, a hydrofixing non-sliding block a (Fig. 2 and 4) is inserted into the loop of the rope.

| 1ск6йьймймйййййййййй. In the case of FIG. 2 The fixed block 8a together with the movable block 7 forms a tackle, which, due to the automatic cleaning of the ropes, slows down the intrinsic speed of the movable block 7, which has as its consequence an increase in the compactness of the system installation.

If it is necessary to transfer branch 4 from one side of the winch to the other, an auxiliary roller 9 can be used (Fig. 5).

FIG. 1 and 3 A variant of the winch is shown schematically, in which, in addition to the friction drum 1, there is also an anti-friction drum 10, which is shown in a special dotted line drawing. Due to the fact that the rope section 6 connecting the friction drum 7 with the non-friction drum and / (is always under tension, the shaft: the moving movable block 7, the correct operation of the friction drum 7 does not depend significantly on the circumferential friction drum W. The friction drum / handle works efficiently even if the drum i / i is completely immobile. This is the very best feature of the winch, Taik as cJ) i6 allows you to use a non-friction drum 10 he only to work as an accumulator slave, but as a start, howling device. The consequence of this same winch property is that the drive of the non-friction drum Yu can be implemented as independent of the drive of the friction drum 7.

due to the fact that in the proposed winch the correct operation of the friction drum 7 is provided by the most movable load P, which through the medium of the movable block 7 produces automatic cleaning of the ropes and provides static balance of the rope on the drum, they can find: various applications not only in stationary but and in mobile installations. In particular, they

They can also be used as double winches for work as tally. They can work not only from nanates, but also from the hotspot, KOTOpbie, in this case can be not calibrated.

The subject matter of the invention.

Claims (4)

1. Differential winch with friction drum, characterized in that; that, in order to obtain the necessary friction between the rope and the friction drum 7 (fig. 1) and different speeds in the movements of 3k4 rope branches; forming a load-carrying loop, a fire-giving block 2, of which branch 5 covers the specified friction bag raban 7, a mobile blade 7 is applied, to the holder of which the end of said branch 4 and the roller are attached. which is enclosed by a loop to 1nat 6, rolled up during tightening of the load-carrying loop for 3, 4 s. drum 7 and fixed with a free end in a fixed To4rte 8. 2. Application to the winch according to claim 1 as the friction drum of one or several leading shchivki 7 (Fig. 3J. 3. Application to the winch of p6 p. 1, in order to obtain a more compact installation, including the loop b, additional fixed blocks g (aa (. 2 and 4) or one or more properly fixed rollers, taking the branches of the specified loop Twenty or more clips of the block /, and auxiliary roller 9 can be used to transfer branch 4 from one side of the winch to the other (Fig. 5). 4. The application to winch tfo of paragraph i of auxiliary projectile (not friction) drum 10 (FIGS. 1 and 3), intended for winding the free end 8 of loop b and kinematically independent or connected by one of the most well-known mechanisms with the energy generator, which sets in motion friction drum 7. (Pig Figs / 4 JT fip5   . &