SU1108272A1 - Endless driving v-belt - Google Patents

Abstract

ENDLESS DRIVE WEDGE BELT, mainly for the variator, containing a bearing element in the form of an endless steel tape, on which wedge-shaped friction elements are installed, characterized in that, in order to increase the load capacity, it is provided with elastic elements in the form of gaskets placed on both sides of the bearing element, friction elements are made in the form of alternately alternating blocks with convex and concave mating surfaces corresponding to one another and located across the belt each block is made in the form of a trough-shaped base and a closing plate installed between the side walls of the base and rigidly connected to them, the supporting element is placed between the base and the closing plate, with the blocks with concave surfaces installed with a gap relative to the elastic elements and friction surfaces blocks with convex surfaces.

Description

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The invention relates to mechanical engineering, in particular to mechanical gearless transmissions, in particular to V-belts) 1st variators.

Known endless drive V-belt containing friction blocks with a trapezoidal wedge cross-section, mounted on the carrier layer, made in the form of a metal tape 1.

The disadvantage of this solution is reduced load capacity due to the lack of the possibility of relative movement of the blocks in the vertical direction.

The purpose of the invention is to increase the load capacity of the belt.

The goal is achieved by the fact that an infinite V-belt drive, mainly for the variator, containing a bearing element in the form of an endless steel tape, on which wedge-shaped friction elements are fitted, is provided with elastic elements placed on both sides of the bearing element, the friction elements are alternately alternating with blocks convex and concave mating surfaces, corresponding to one another and located across the belt, each block being designed as a base of a trough A second form and a closing plate mounted between the side walls of the base and rigidly connected to them, the carrier element is placed between the base and the closing plate, with blocks with concave surfaces installed with a gap relative to the elastic elements and friction surfaces of blocks with convex surfaces.

FIG. 1 shows the proposed belt, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 — node I in FIG. 1 (enlarged image of the carrier sln).

The V-belt contains blocks, with trough-shaped bases 1, closing plates 2 with convex sides 3,

between which a supporting layer 4 is mounted, connected to the bases 1 through elastic layers 5 and 6. Blocks containing the trough bases 7 and closing plates 8 with concave sides 9 are located between the bases 1 with convex sides 3. The concave blocks are installed with gaps b and c in relation to the supporting layer 4. The torque is transmitted by the action of the disks 10 and 11 of the driving pin on the group of friction blocks in contact, which push the blocks located on the straight section of one branch and on the MOM pulley variator.

When running onto tapered discs 10

And the V-belt is smoothly bent due to the rounding of the concave blocks in the areas in contact with the elastic layers 5 and 6, while being conjugated between

the friction blocks move relative to each other, slipping along the mating surfaces having the same radius of curvature.

To improve the performance of the base layer, 4 turns of steel tape 12 are separated by a thin elastic layer. M. 13, but the last (outer) turns are wound without an elastic layer, and the end of the tape is welded to the outer layer. Thereafter, a resilient layer 6 is installed with tension, and the locking plates 2 and 8 are attached with bases 1 and 7 by welding or glue. Due to the transfer of force between blocks with mating surfaces with the same radius of curvature, contact loads are significantly reduced, which allows a greater amount of force to be transmitted to the V-belt, have lower surface hardness and make blocks of plastic, which reduces the V-belt weight and increases the friction coefficient between friction blocks and disks 10 and 11, the magnitude of the transmitted force (moment), while the compression force of the disks 10 and 11 in the axial direction decreases, allowing you to reduce Ichin steering effects on wheels 10 and 11.

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assembly

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Claims (1)

ENDLESS DRIVE V-BELT, mainly for a variator, containing a bearing element in the form of an endless steel strip on which wedge-shaped friction elements are installed, characterized in that, in order to increase the load capacity, it is equipped with elastic elements in the form of gaskets placed on both sides of the bearing element, friction elements are made in the form of alternately alternating blocks with convex and concave mating surfaces corresponding to one another and located across the belt, with each block is made in the form of a trough-shaped base and a locking plate installed between the side walls of the base and rigidly connected to them, the bearing element is placed between the base and the locking plate, and the blocks with concave surfaces are installed with a gap relative to the elastic elements and friction surfaces of the blocks with convex surfaces. Figure 1