JPS61171960A - V pulley for steel v belt - Google Patents

Abstract

PURPOSE:To improve transmission efficiency by obtaining sufficient friction contact with V pulleys even if a steel V belt is used in lubricant. CONSTITUTION:Elastic films 7 are fit to surfaces of V pulleys 8, 9 and the elastic films 7 are constituted by material which is softer than that of the V block 3 of a steel V belt A and which is easily deformed elastically. And the thickness is determined to have the V block 3 properly buried in the elastic film 7. By this constitution, the V blocks 3 and pulleys 8, 9 become difficult to slide with each other and transmission efficiency can be improved. And noise is also restrained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) This invention relates to improving the transmission capability of a V-pulley used in combination with a steel V-belt to transmit power.

(Prior Art) V-belts used in combination with pulleys have conventionally been generally made of rubber or fibers and have been used in many fields. However, in recent years, there has been a desire to increase the transmission horsepower, and V-belts made mainly of rubber and fibers have too harsh operating conditions and lack strength, so in order to compensate for this, IWA Steel V-belts with chains or copper strips as tensile members have been adopted. However, steel V-belts are generally used in lubricating oil, and as a result, the coefficient of friction between the steel V-belt and the V-pulley is small, which sometimes causes slippage and damage to the device.

(Problems to be Solved by the Present Invention) The purpose of this invention is to enable sufficient contact and thereby improve transmission efficiency.

(Means for solving the problem) For this reason, the steel V-belt is suspended between a pair of V-belts to transmit power.In the pulley, the V-shaped block of the engaged steel V-belt is engaged with the V-pulley. match,
The friction surface of the pulley (1) is coated with a material and thickness that has an elastic modulus that can be slightly deformed and dented by the pressure of ing.

(Function) In general, ■ Since pulleys and steel V-belts are made of steel, ■ V-shaped blocks in contact with pulleys cause slipping, but in the present invention, the V-shaped blocks of V-pulleys Since the friction surface in contact with the V-shaped block has elasticity and is coated with a certain degree of tightness, the pressure of the contact with the V-shaped block causes
The V-shaped block is slightly deformed partially, and both ends of the V-shaped block bite into the coated surface. (2) The coated surface is interposed at the contact surface between the pulley and the V-shaped block to prevent them from sliding against each other.

(Embodiment) To explain the following based on the drawings, FIG. 1 shows a typical example of a steel V-belt A used in combination with the V-pulley of the present invention, which includes several inner link plates L, 11. If the inner link group consists of , , several outer link plates 2.210
000. The outer link group C is connected to a series of chains by inserting the bottle 5 into the link hole 4 passing through each of the inner and outer link groups, so that they can freely bend like blind ends.
A molded block 3 is fitted, and the outer surface 6 of this V-shaped block 3 comes into contact with the groove of the (1) pulley, so that power is transmitted by the frictional force between the two. FIG. 2 conceptually shows how the V-pulley 8.9 of the present invention meshes and contacts the steel V-belt A. ■The pulley has a pulley 8 that is integral with the shaft S (located on the left side in the drawing), and a key on the shaft S at a position opposite to the pulley -8, which cannot be rotated by pressing the key to the shaft S. A figure 7 is formed with the pulley 9 whose upper part can be slid, and the pulley 9 is always pushed to the left by the pressure P, and the V-shaped block of the steel V-belt A has the end face 6 of the V-pulley 8.90.
I'411 formed on the surface! 7 ′″0″゛7'-I
J-8,917)) JLI.

The elastic membrane 7, which transmits the power to the steel V-belt A, and transmits the power to the other V-boo 9-, not shown, is made of, for example, nitrile rubber, urethane, or other synthetic resin. Material of V-shaped block 3 (generally steel)
A material that is softer and more easily deformed is selected, and its thickness is such that the V-shaped block 3 is deformed enough to be buried in the elasticity [7] by an appropriate amount.

Furthermore, in another embodiment shown in FIG. 4, a plurality of carbon fibers, carbon fibers, or synthetic resins are combined to form a lobe, and the elastic material IO is adhesively wound around the surface of each pulley 8.90. In this case, the carbon fiber itself is difficult to elastically deform, but when viewed as a lobe, it initially had a roughly circular cross section, but the part where the V-shaped block 3 came into contact became roughly elliptical, and the part where the V-shaped block 3 came into contact became roughly elliptical. It is determined that the end face 6 of the 3 is buried, which is included in the concept of the present invention. moreover,
These are woven into a cloth shape, and a pulley 8 is used as an elastic material 10.
．． A similar effect can be obtained by adhering to each of 9.

Then, in the embodiment shown in FIG. 5, a repellent film 11 is formed. This elastic membrane 11 deforms in accordance with the fine irregularities of the end surface 6 of the pulley 8-type block 3, and can obtain a large coefficient of friction (effect). As representatively shown in the figure, the end face 6 of the V-shaped block 3 of the steel V-belt A is buried so as to bite into the elastic material 7 or lOl or elastic membrane 11 adhered to the surface of the V-pulley 8. Since it is held in frictional contact with 9-8.9, it becomes difficult for them to slip against each other, and a large load can be transmitted. Since there is an inclusion such as the elastic material 7, lO, or the elastic membrane 11 between the end surface 6 of the V-shaped block 3 and the surface of the pulley 8.90 that contacts it, resonance noise caused by contact or impact between similar metals is prevented. The presence of the inclusions also serves as a buffer, thereby preventing wear and deformation of the type block 3 and further damage to the device.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1 to 5 are drawings according to the present invention,
Fig. 1 shows an example of a steel V-belt used in combination with a pulley, Fig. 2 is a vertical cross-sectional view of a case where power is transmitted by combining a V-pulley and a steel V-belt, and Fig. 3 shows an example of a steel V-belt used in combination with a pulley.
The figure shows the surface of the steel V-belt being deformed as it comes into contact with the V-pulley, and FIGS. 4 and 5 show other embodiments. 8-person tail V''le ■, 3-,, vzefi mouth, 7 so, '1----・7°-ree- Figure 1 =-Figure

Claims (1)

[Claims] 1. In a V pulley that transmits power by hanging a steel V belt between a pair of V pulleys, the engaged steel V
A steel V-belt characterized in that the friction surface of the V-pulley is coated with a material and thickness that has an elastic modulus that allows the V-shaped block of the belt to be slightly deformed and dented by the pressure of engagement with the V-pulley. V pulley for.