CN203614677U

CN203614677U - Triangle belt transmission device

Info

Publication number: CN203614677U
Application number: CN201320833044.3U
Authority: CN
Inventors: 王胜利; 黄捷; 朱雅娴
Original assignee: Jiangsu World Plant Protecting Machinery Co Ltd
Current assignee: Jiangsu World Plant Protecting Machinery Co Ltd
Priority date: 2013-12-18
Filing date: 2013-12-18
Publication date: 2014-05-28
Anticipated expiration: 2023-12-18

Abstract

The utility model discloses a triangle belt transmission device which comprises two belt wheels which are not in the same plane and four compression rollers. The two belt wheels are jointed through a triangle belt which is arranged in an inclined mode. One set of two compression rollers which are arranged in an up-and-down mode and the two compression rollers of the other set are arranged at the positions close to the belt wheels respectively, and the peripheral faces of the compression rollers abut against the two sides of the triangle belt respectively. The compression rollers push the triangle belt to enable the distance between the centers of the compression rollers to the centers of the radial symmetric faces of the belt wheels to be H which is equal to R+1/2B. The triangle belt transmission device pushes the triangle belt at the position for entering and exiting the belt wheels until the inclination angles between the triangle belt and the belt wheels are zero, and therefore the sliding friction losses between the triangle belt and the side faces of grooves of the belt wheels are reduced. Meanwhile, due to the fact that rolling friction is achieved between the compression rollers and the side face of the triangle belt, the friction losses between the compression rollers and the triangle belt are reduced, and the service life of the triangle belt is greatly prolonged.

Description

Belt Drive device

Technical field

The utility model relates to a kind of tape drive mechanism, and especially a kind of not Belt Drive device in one plane, belongs to mechanical transmissioning technology field.

Background technique

V belt is one of part more easy to wear in belt drive, two belt wheels that are connected by v belt are under normal circumstances in the same plane, but when two belt wheels are not during or not a plane, v belt must be obliquely installed, and like this, between v belt and belt wheel, has inclination angle, this inclination angle generally should not exceed 5 °, otherwise between v belt and belt wheel, frictional force strengthens, and causes v belt heavy wear, thereby greatly reduces the working life of v belt.For above-mentioned situation, general double pulley adjusting or the employing spline housing of adopting slides up and down to adjust v belt inclination angle at present, but these two kinds of mode complex structures, cost is high.

Model utility content

The purpose of this utility model be to provide a kind of simple in structure, can reduce v belt inclination angle, make the nonabradable pulley gear of v belt.

The utility model is achieved by the following technical programs:

A kind of Belt Drive device, comprise two belt wheels and 4 pressure rollers, described two belt wheels are not in same plane, two belt wheels are connected by tilting v belt, one group of 2 pressure roller setting up and down are arranged near a belt wheel position, and pressure roller outer circumferential face is resisted against respectively in a side of bottom and upper segment of v belt; 2 pressure rollers of another group setting up and down are arranged near another belt wheel position, and pressure roller outer circumferential face is resisted against respectively on the opposite side of bottom and upper segment of v belt; Pressure roller promotes v belt and makes the distance H at pressure roller center and belt wheel radial symmetric face center equal 1/2 sum of pressure roller supporting surface radius R and v belt top width B, i.e. H=R+1/2B; Described pressure roller comprises pressure roller body and pressure roller back shaft, and described pressure roller back shaft one end is fixed in frame, pressure roller body by bearings on the pressure roller back shaft the other end.

The utility model can also further be realized by following measures.

Aforesaid Belt Drive device, wherein said pressure roller body is taper type pressure roller body, the taper type outer circumferential face of pressure roller body is resisted against on the corresponding side of v belt.

Aforesaid Belt Drive device, the wherein said cone angle of taper type pressure roller body axis projection and the cross section angle of wedge β of v belt equate.

The utility model is being set up respectively upper and lower 2 one group of pressure rollers near two belt wheel places, two groups totally 4 pressure rollers be resisted against respectively v belt both sides, inclination angle between v belt and the belt wheel at turnover belt wheel place is 0 °, thereby has reduced the sliding friction loss of v belt and belt wheel race side; Meanwhile, owing to being rolling friction between pressure roller and v belt side, also reduce the frictional loss between pressure roller and v belt, greatly extended the working life of v belt.

Advantage and disadvantage of the present utility model, by for illustration and explanation the non-limitative illustration by preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the plan view of Fig. 1.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

As depicted in figs. 1 and 2, the utility model comprises not 1 and 4 pressure rollers 2 of two belt wheels in same plane, two belt wheels 1 are connected by tilting v belt 3, one group of 2 pressure roller 2 setting up and down are arranged near belt wheel 1 position, and pressure roller 2 outer circumferential faces are resisted against respectively in a side of bottom and upper segment of v belt 3; 2 pressure rollers 2 of another group setting up and down are arranged near another belt wheel 1 position, and pressure roller 2 outer circumferential faces are resisted against respectively on the opposite side of bottom and upper segment of v belt 3; Pressure roller 2 promotes v belt 3, make the distance H at pressure roller 2 centers and belt wheel 1 radial symmetric face center equal 1/2 sum of pressure roller 2 supporting surface radius Rs and belt top width B, be H=R+1/2B, take the inclination angle between v belt 3 and the belt wheel 1 at two belt wheel 1 places of assurance turnover as 0 °, reduce the frictional loss of v belt.

Pressure roller 2 comprises pressure roller body 21 and pressure roller back shaft 22, and pressure roller back shaft 22 one end are welded in frame 4, and pressure roller body 21 is supported on pressure roller back shaft 22 the other ends by bearing 5.Pressure roller body 21 is taper type pressure roller body, the taper type outer circumferential face of pressure roller body 21 is resisted against on the corresponding side of v belt 3, the cone angle of taper type pressure roller body axis projection equates with the cross section angle of wedge β of v belt 3, can guarantee that v belt 3 both sides contact with pressure roller body 21 periphery upper threads, the loss of rolling friction v belt is less, and transmission is more smooth and easy.

In addition to the implementation, the utility model can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. a Belt Drive device, comprise two belt wheels, described two belt wheels are not in same plane, two belt wheels are connected by tilting v belt, it is characterized in that: also comprise 4 pressure rollers, one group of 2 pressure roller setting up and down are arranged near a belt wheel position, and pressure roller outer circumferential face is resisted against respectively in a side of bottom and upper segment of v belt; 2 pressure rollers of another group setting up and down are arranged near another belt wheel position, and pressure roller outer circumferential face is resisted against respectively on the opposite side of bottom and upper segment of v belt; Pressure roller promotes v belt and makes the distance H at pressure roller center and belt wheel radial symmetric face center equal 1/2 sum of pressure roller supporting surface radius R and v belt top width B, i.e. H=R+1/2B; Described pressure roller comprises pressure roller body and pressure roller back shaft, and described pressure roller back shaft one end is fixed in frame, pressure roller body by bearings on the pressure roller back shaft the other end.

2. Belt Drive device as claimed in claim 1, is characterized in that: described pressure roller body is taper type pressure roller body, and the taper type outer circumferential face of pressure roller body is resisted against on the corresponding side of v belt.

3. Belt Drive device as claimed in claim 1 or 2, is characterized in that: the cone angle of described taper type pressure roller body axis projection equates with the cross section angle of wedge β of v belt.