CN201548460U

CN201548460U - Fatigue tester with non-resistance torque tension mechanism

Info

Publication number: CN201548460U
Application number: CN200920180993XU
Authority: CN
Inventors: 朱六生; 刘志刚; 韦国亮
Original assignee: MA'ANSHAN RUISHENG INDUSTRIAL TRADE Co Ltd
Current assignee: MA'ANSHAN RUISHENG INDUSTRIAL TRADE Co Ltd
Priority date: 2009-12-04
Filing date: 2009-12-04
Publication date: 2010-08-11
Anticipated expiration: 2019-12-04

Abstract

The utility model relates to a fatigue tester with a non-resistance torque tension mechanism, comprising a frame, a motor, a driving wheel, a driven wheel, an ergometer, a pulley and a slideway. The wheel shaft of the driven wheel connects with a horizontal support bar; one end of the support bar is connected with a tensioning rope; a transition pulley and a tension pulley are successively arranged on a corresponding frame on the other end of the support bar; the lower edge of the transition pulley is tangential to an extension line of the support bar; the tension pulley is located on top of a transition pulley; the tensioning rope winds over the lower part of the transition pulley and then winds over the upper part of the tension pulley; and the other end of the tensioning rope is connected with a weight. The utility model reduces the moment arm L so that the generated resistance torque M is almost zero; the resistant sensor tests that the error between the tension functioned on the belt and the weight is reduced; and taking HK 2700 as an example, the improved test data is only 20N to 30N which is almost ignored in the experiment allowable range.

Description

Fatigue tester with non-resistance moment of torsion tension mechanism

Technical field

The utility model relates to a kind of fatigue tester.

Background technology

Fatigue tester (GB/T 12753-91 sees Fig. 2) is to be used to measure the fatigue lifetime that agricultural machinery is used classical V-belt, the V band is installed on testing machine two belt wheels, after applying the tensile force of regulation, turn round with certain speed, whether centre distance rate of change behind the mensuration certain hour and V band reach the fatigue lifetime of regulation.Can carry out the torture test of a classical V-belt at every turn, and have the length of survey function, can be used as gauging machine and use, also can carry out the torture test and the linear measure longimetry of other band classes.

The fatigue tester (see figure 2) is the two-wheeled testing machine.It comprises the test instrumentation that motor, driving wheel, engaged wheel, strainer and dynamometer etc. are necessary.The driving wheel of testing machine or engaged wheel should move horizontally, so that band bears constant tension force.There are following three problems in existing two-wheeled testing machine: 1, have very big resistive torque in experimentation, make a concrete analysis of as follows: in Fig. 1, under the effect of heavy stone roller, from bigger arm of force L, draw according to the computing formula M=F * L of moment: the resistive torque M=G that produces in the experimentation * L; Because heavily the weight of stone roller is very big and can not reduce in the experimentation, otherwise influences experimental result, the arm of force wherein then can reduce.2, very big frictional resistance is arranged in experimentation, be analyzed as follows: in as 1, pulley 5 with cooperated separately the axle between friction belong to sliding friction, friction is bigger, and the more little experiment effect of friction is good more in experimentation, though friction can not be eliminated fully, can maximizedly reduce.Find also in experimentation that 3, there is very big error in actual recording between tension force that affacts on the belt and the weight of heavily the cutting or polish jade with an emery wheel, and difference is not a fixed value.

Summary of the invention

In order there to be the problem than mistake between the weight that solves the tension force on the belt and heavily cut or polish jade with an emery wheel, the utility model provides a kind of fatigue tester with non-resistance moment of torsion tension mechanism.

Concrete architecture advances technical scheme is as follows:

Fatigue tester with non-resistance moment of torsion tension mechanism comprises frame, motor, driving wheel, engaged wheel, dynamometer, coaster and slideway, and with being located on the coaster, coaster is positioned on the slideway of frame by wheel shaft for dynamometer and engaged wheel;

The wheel shaft of described engaged wheel is connecting horizontal support bar, and the support bar other end is connecting the tensioning rope; Be provided with transition pulley and tension roller successively on the corresponding frame of the support bar other end, the long line in edge of the lower edge of transition pulley and support bar is tangent, tension roller is positioned at the top of transition pulley, the tensioning rope is striden the bottom of walking around the transition pulley, then stride the top of walking around tension roller, the other end of tensioning rope connects stone roller emphatically.

The described support bar other end is connecting the tensioning rope by connecting minor axis.

Useful technique effect of the present utility model is embodied in the following aspects:

1, all arm of force L in experimentation of improvement back two-wheeled testing machine have reduced, and this arm of force becomes very little after improvement, almost can ignore, and therefore the resistive torque M that produces is almost nil.

2, improve rear wheel and its place spool between friction reduced because rolling friction is than little many of sliding friction under the identical situation of other condition.

3, the utility model utilization drag sensor test draws the tension force that affacts on the belt and the error of heavily cutting or polish jade with an emery wheel between the weight reduced, with HK2700 is example: before improvement, the difference of being surveyed that affacts the tension force on the belt and heavily cut or polish jade with an emery wheel the weight between the weight has 300N more than the 500N; 20N is only arranged to 30N and improve the data of being surveyed the back, in the experiment allowed band, almost can ignore.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 is existing two-wheeled fatigue tester structural representation.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

Referring to Fig. 1, fatigue tester with non-resistance moment of torsion tension mechanism comprises frame, motor, driving wheel 1, engaged wheel 3, dynamometer 4, coaster and slideway 9, dynamometer 4 and engaged wheel 1 are coaxially installed on the coaster by wheel shaft, coaster is positioned on the slideway 9 of frame, and straddle mounting V and is with 2 between driving wheel 1 and the engaged wheel 3.

The wheel shaft of engaged wheel 3 is connecting horizontal support bar 11, and support bar 11 other ends are connecting tensioning rope 12 by connecting minor axis; With on the corresponding frame of support bar 11 other ends transition pulley 5 and tension roller 6 are installed successively, the long line in edge of the lower edge of transition pulley 5 and support bar is tangent, tension roller 6 is positioned at the top of transition pulley 5, tensioning rope 12 is striden the bottom of walking around transition pulley 5, then stride the top of walking around tension roller 6, the other end of tensioning rope connects cuts or polish jade with an emery wheel 10 emphatically.

Claims

1. the fatigue tester that has non-resistance moment of torsion tension mechanism, comprise frame, motor, driving wheel, engaged wheel, dynamometer, coaster and slideway, with being located on the coaster, coaster is positioned on the slideway of frame, it is characterized in that by wheel shaft for dynamometer and engaged wheel:

2. the fatigue tester with non-resistance moment of torsion tension mechanism according to claim 1 is characterized in that: the described support bar other end is connecting the tensioning rope by connecting minor axis.