CN2210283Y

CN2210283Y - Speed changeable V-shape driving belt

Info

Publication number: CN2210283Y
Application number: CN 94200849
Authority: CN
Inventors: 刘亚茹
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-21
Filing date: 1994-01-21
Publication date: 1995-10-18
Anticipated expiration: 2004-01-21

Abstract

The utility model belongs to a speed changeable V-shaped driving belt, which comprises an external coating layer (1), an extension layer (2), a strength layer (3) and a supporting frame layer (4). An upper top (5) and a lower base (6) are in an arc shape, and the two bottom corners of the lower base (6) are made into round corners. The external coating layer (1) is composed of two layers of separately coated cords (11), and the two layers of cords (11) are mutually crossed in a certain angle. The supporting frame layer (4) is composed of a plurality of groups of stacked cords (41) and partition layers (42). The utility model has the advantages of good abrasive resistance, good fatigue durability, a little heat generation, good heat radiation property, long service life, large transmission power, and high power transmission efficiency, and the utility model can be used for variable transmission of various mechanical equipment.

Description

Speed changeable V-shape driving belt

The utility model belongs to the wide V-type driving belt of a kind of speed change.

In existing various mechanical transmission, using the wide V-type driving belt of speed change widely.Its structure comprises surrounding layer, upholds layer, strength layer and support framework layer.Surrounding layer adds glue by canvas to be made, and upholds layer and is made by certain thickness rubber, and shell of tension is to adopt single row or multiple rows chemical fibre wire rope core, places and upholds layer.Because the employed canvas of surrounding layer, take the graticule braiding to form, and very fine and close, thereby when work belt outer end tension radially, fatigue fracture easily takes place, pile up the inner radially, easily heating is easy to wear, and the life-span is reduced.The support framework layer is a kind of to be to be made by rubber, play supporting role, because its quality is softer, so lateral stiffness is bad, and is yielding.Another kind of support framework layer adopts full cord structure, and its vertical flexibility is bad, and fatigue fracture easily takes place.

It is big that task of the present utility model provides a kind of transmitted power, the efficient height, and the life-span is long, the wide V-type driving belt of the speed change that lateral stiffness is good.

Task of the present utility model is achieved in that it comprises surrounding layer (1), upholds layer (2), strength layer (3) and support framework layer (4), and last top (5) becomes camber with go to the bottom (6), and fillet is made at two base angles (7) of go to the bottom (6).Surrounding layer (1) is double-baged by cord (11) branch and is formed two-layer cord (11) intersection at an angle to each other.Support framework layer (4) forms by the many groups of cord (41) and rubber interlayer (42) are folded mutually.Cord (11) is made by chemical fibre class material.

The utlity model has following advantage:

Because surrounding layer (1) adopts two-layer cord (11), when work, respectively have fan-shaped open and close of one's own, cord (11) has been used in addition the chemical fibre of strong pulling force class material, so that this driving belt has good vertical ductility, distortion is capable of expansion and contraction when bending, improved wear resistance, increased friction factor, living simultaneously heat is low, thermal diffusivity good.

Because support framework layer (4) adopts many group phase stack structures, so it had both guaranteed lateral stiffness, had guaranteed vertical ductility and fatigue resistance again.

Because last top (5) and go to the bottom (6) are camber, like this, when running was subjected to pulling force, recessed distortion reduced, and made the both sides of band better with the belt wheel contact.Two base angles (7) of (6) go to the bottom simultaneously for fillet, when making the work of wide V-type driving belt up and down freely, " gnawing the limit " phenomenon no longer takes place, the wearing and tearing at surrounding layer base angle have been reduced, reduced the chance of job-hoping owing to the asynchronous up and down distortion that is distorted in band both sides, running resistance reduces, and transmission efficiency improves.

So it is good to the utlity model has wear resistance, fatigue resistance is good, and heating is few, and thermal diffusivity is good, and transmitted power is big, and the advantage that transmission efficiency is high has fabulous lateral stiffness and vertical ductility simultaneously, and improve working life greatly.

Accompanying drawing: the wide V-type driving belt of speed change structural drawing.

Embodiment:

The utility model is made up of surrounding layer (1), extension layer (2), strength layer (3) and support framework layer (4), and last top (5) becomes camber with go to the bottom (6), and fillet is made at two base angles (7) of go to the bottom (6).Surrounding layer (1) is divided to double-bag by cord (11) and forms, and two-layer cord (11) is mutually 140 degree angles and intersects, and the vertical of cord (11) and the wide V-type driving belt of speed change becomes 70 to spend angles.Cord (11) is made by chemical fibre class material, and is standby through pretreatment, kiss-coating, after rolling, cutting.

Support framework layer (4) forms by the many groups of cord (41) and rubber interlayer (42) are folded mutually.Concrete technology is earlier cord (41) to be carried out pretreatment, roll according to the different sizing materials of purposes, make standby cord by required specification nicking again, standby cord is organized the composing of being separated by with film more with different components, cut bar with dedicated tool, it is standby to make support framework layer (4).

The manufacturing process of strength layer (3) be earlier with chemical fibre class wire rope core through pretreatment, winding displacement, rubberizing, strength layer (3) is placed upholds among the layer (2), then by required width cutting.

At last with support framework (4) with extension layer (2) moulding that contains strength layer (3), use outsourcing cord (11) outsourcing again, vulcanize and form surrounding layer (1).So promptly made the wide V-type driving belt of speed change.Through the deburring check, warehouse-in is finished whole manufacturing processs.

Claims

1, the wide V-type driving belt of a kind of speed change, it comprises surrounding layer (1), upholds layer (2), strength layer (3) and support framework layer (4), it is characterized in that camber is made on its top (5) and go to the bottom (6) of going up, and fillet is made at two base angles (7) of go to the bottom (6); Surrounding layer (1) is double-baged by cord (11) branch and is formed angled intersection between two-layer cord (11); Support framework (4) forms by the many groups of cord (41) and rubber interlayer (42) are folded mutually.