CN2196296Y

CN2196296Y - Low speed large torque measuring apparatus

Info

Publication number: CN2196296Y
Application number: CN 94210249
Authority: CN
Inventors: 刘福林; 唐照民
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 1994-04-29
Filing date: 1994-04-29
Publication date: 1995-05-03
Anticipated expiration: 2004-04-29

Abstract

The utility model discloses a new low speed large torque measuring apparatus, belonging to the technical field of mechanical measuring. The structure mode of traditional measuring apparatus is altered, a short sleeve is fixedly connected with one end of an elastic torsion rod sensor, a deflector rod is fixedly connected with the sleeve, one end of the casing is fixedly connected with the elastic torsion rod, the other end is fixedly connected with a end cap which is provided with a bearing, the casing can do a free rotation corresponding to the sleeve and the deflector rod, and a precise displacement measuring gauge is fixed on the casing. The utility model can be used for measuring the torque of a low speed shaft, the measuring range can reach more than 30000 N. m, and the utility model has the advantages of simple structure, convenient operation, high measuring precision, and long service life.

Description

Low speed large torque measuring apparatus

The utility model belongs to the mechanical measurement technique field, further belongs to novel low speed high torque tester.

The torque tester that uses in the industry at present, adopt resistance strain gage to gather dtc signal mostly, again by contact conducting slip ring (carbon brush) or the output of inductance collector ring, and then import a specialized equipment and carry out signal Processing, cost is very high, and a signal processing equipment often accounts for the 60%-80% of whole torque tester cost; In addition, the discreteness of the paster azimuthal error of resistance strain gage, foil gauge performance.Elasticity is turned round axle or the connection place of elastic beam and measured axis because of the influence to torque signal of the horizontal perturbed force of shaft coupling alignment error generation and moment of flexure, the instability variation of conducting slip ring in the signal output procedure (carbon brush) contact resistance and influence of environment temperature or the like all will bring error to measuring-signal, especially higher in environment temperature, noise is bigger, ambient dust is big (as boiler grate), peripheral electromagnetic field disturbs under the bigger environment and carries out big torque measurement, to produce than mistake, and instrument Installation and Debugging complexity, carbon brush is easy to wear, instrument is shorter serviceable life; Also have some optical profile type torque testers,,, can't measure the torque of low speed rotating shaft because of being subjected to the restriction of people's visual range though can avoid above-mentioned shortcoming.

The purpose of this utility model is to overcome above-mentioned shortcoming, save collector ring, resistance strain gage and other causes the element of signal transmission error and parts depreciation easily, also save complexity and expensive signal processing equipment and stabilized voltage supply, the testing tool structure is simplified greatly, antijamming capability strengthens, measuring accuracy improves, and increase serviceable life.

Main technical schemes of the present utility model is as follows:

Elasticity is turned round the central axis position that axle is positioned at this torque tester, one short sleeve is enclosed within elasticity and turns round axle one end and be fixedly connected with it, driving lever and short sleeve are fixedly connected, shell one end and elasticity are turned round an other end and are fixedly connected, the end cap that the other end of shell and has bearing is fixedly connected, relative sleeve of shell and driving lever are free to rotate, fix the displacement measurement gauge outfit of a precision on shell, and the push rod contact of displacement measurement gauge outfit is vertical with driving lever.

The utility model will be further described below in conjunction with accompanying drawing.

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

Fig. 2 be the A of Fig. 1 to the part to view.

Fig. 3 is that elasticity is turned round the axle sensor structural representation.

As depicted in figs. 1 and 2, connect by taper bolt 4 between the left end that elasticity is turned round axle sensor 1 and the sleeve 2, driving lever 9 links by taper bolt 6 with sleeve 2, driving lever 9 can be turned round a left end with elasticity and rotates synchronously like this, right-hand member and housing 10 that elasticity is turned round axle 1 link by taper bolt 11, link by screw 12 between housing 10 and the big end cap 5, between big end cap 5 and sleeve 2, bearing 15 is housed, like this, can guarantee that the left end that right-hand member that big end cap 5, housing 10 turn round axle 1 with elasticity is freely turned round axle 1 with respect to driving lever 9, sleeve 2 and elasticity synchronously rotates; In the outside of big end cap 5 and bearing 15 a small end lid 14 is arranged, link, between small end lid 14 and sleeve 2, O-ring seal 3 is arranged, prevent that dust from entering in the instrument internal bearing by screw 13 and big end cap 5; Moment of torsion display gauge head 17 is fixed on the housing 10 by support 16, and support 16 is cemented on the housing 10, and transparent organic glass cover 8 links by screw 7 and housing 10, covers on gauge outfit 17 and housing 10 breach outside, prevents that dust from entering.

Embodiment one: as shown in Figure 3, turn round diameter sudden change place of axle sensor two ends in elasticity and designed a special indent knuckle, make elasticity turn round axle sensor under the prerequisite that guarantees its linearity and sensitivity, be improved serviceable life.The indent knuckle is made up of two parts, and the bottom is divided into the circular arc type profile, and top is divided into the linear pattern profile.

Embodiment two: under the constant situation of other structure, driving lever 9 is made the overhanging driving lever in two, 180 degree directions are installed two moment of torsion display gauge heads on shell 10.

The utlity model has following positive technique effect: it is simple in structure, and installation and debugging are convenient, and cost is low, the measuring accuracy height, and anti-external environment condition interference performance is strong, especially can under the environment poor condition, work, and long service life.

Claims

1, novel low speed high torque tester, it is characterized in that: elasticity is turned round the central axis position that axle is positioned at this torque tester, one short sleeve is enclosed within elasticity and turns round axle one end and be fixedly connected with it, driving lever and short sleeve are fixedly connected, shell one end and elasticity are turned round an other end and are fixedly connected, the end cap that the other end of shell and has bearing is fixedly connected, relative sleeve of shell and driving lever are free to rotate, fix the displacement measurement gauge outfit of a precision on shell, the push rod contact of displacement measurement gauge outfit is vertical with driving lever.

2, novel low speed high torque tester as claimed in claim 1, it is characterized in that: elasticity is turned round diameter sudden change place of axle sensor two ends a special indent knuckle, this indent knuckle is made up of two parts, and the bottom is divided into the circular arc type profile, and top is divided into the linear pattern profile.

3, novel low speed high torque tester as claimed in claim 1 is characterized in that: two moment of torsion display gauge heads are arranged in the shell top and bottom.