CN104535235B - Device for eliminating additional load of torque sensor and assembling method of device - Google Patents

Abstract

The invention provides a device for eliminating the additional load of a torque sensor and an assembling method of the device. The torque sensor, a converting shaft, a bearing and a casing are included, output shafts at the two ends of the torque sensor are connected to the converting shaft which is coaxial with the output shafts, the converting shaft is in interference fit with the inner ring of the bearing, and the bearing is mounted in bearing soleplate holes which are arranged at the two ends in the casing. The device has the advantages that the two output shafts of the torque sensor are coupled to the converting shaft which is coaxial with the output shafts, it is ensured that the two ends of the torque sensor are completely coaxial, the other end of the converting shat is coupled to a power source and a driven system, influence of the additional load, caused by rotation of the output shafts at the two ends of the torque sensor, on the sensor is eliminated on the premise that the assembly precision is ensured, the eccentric vibration is reduced, and the measuring precision and using reliability of the torque sensor are improved.

Description

A kind of device eliminating torque sensor additional load and assembly method

Technical field

The invention belongs to power and drive technology field, especially relate to a kind of dress eliminating torque sensor additional load Put.

Background technology

In machine driven system, rotating speed, moment of torsion and effective power are to weigh 3 important indicators of systematic function, wherein Effective power is rear calculated by measuring to rotating speed and moment of torsion, and it can be used to judge that the energy of mechanical system damages Lose, as the measurement index of system condition degree of stability.So accurately the moment of torsion of measurement drive system and rotating speed seem particularly heavy Will.Sensor, as the core of moment of torsion and tachometric survey instrument test system, decides the measurement essence of whole test system Degree.

In prior art, the measurement of moment of torsion then typically requires and torque sensor is accessed power source (as motor) and driven Between system, because, during torsion-testing, acquisition module is rotated together with power transmission shaft, if torque sensor is defeated Enter end and outfan is not coaxial, then necessarily cause additional bending load to act on torque sensor, so that torque sensor is surveyed Accuracy of measurement substantially reduces.In addition the possible vibrated, impact of system and the effect of other external force, these plus loads in transmission process The interference signal causing is superimposed on measured value, leads to the torque value of sensor output to transfinite, alarm protecting apparatus start, System cannot normal work.The usual method solving this problem is processing and the assembling improving torque sensor two ends coupling spindle Precision it is ensured that two ends axiality be in rational within the scope of, this method increases processing and the assembly difficulty of drive system, Extend debugging cycle.

Content of the invention

The problem to be solved in the present invention is to eliminate the device of torque sensor additional load.

For solving above-mentioned technical problem, the technical solution used in the present invention is:

A kind of device eliminating torque sensor additional load, including torque sensor, transaxle, bearing and housing, institute State the transaxle connection that the output shaft at torque sensor two ends is coaxial therewith respectively, described transaxle is joined with bearing inner race interference Close, described bearing is arranged on the bearing mounting base in the hole of two ends setting in housing.

Further, described bearing is rolling bearing.

Further, the bearing mounting base hole at described housing two ends is completed by disposable boring.

The method for processing and assembling of the above-mentioned device of elimination torque sensor additional load, comprises the steps:

First, the bearing mounting base hole of described housing two ends axiality is completed by disposable boring；

Afterwards, rolling bearing is arranged on bearing mounting base in the hole, by transaxle and rolling bearing inner ring interference fit；

Afterwards, torque sensor two ends output shaft is respectively pressed into transaxle, after entering and being attached to position, hand rotation moment of torsion passes It is qualified that the output shaft of sensor, no catching phenomenon are assert；

Finally, whole device is fixed on stand by rigid support, accesses torque signal gathered data line.

The device eliminating torque sensor additional load of the present invention has the beneficial effect that

By two output shafts of torque sensor being coupled with coaxial transaxle it is ensured that torque sensor two ends are completely same Axle, the other end of transaxle couples with power source with by drive system respectively, on the premise of ensureing assembly precision, eliminates torsion The impact to sensor itself for the additional load causing during the output shaft rotation of square sensor two ends, reduces eccentric vibrating, improves The certainty of measurement of torque sensor and dependability；Structure is simple, easy to process.

Brief description

Fig. 1 is the structural representation of the present invention.

In figure:

1- torque sensor 2- transaxle 3- bearing 4- housing

Specific embodiment

The core concept that the present invention eliminates the device employing of torque sensor additional load is: by the two ends of torque sensor Output shaft is first coupled with a transaxle, is passing through to couple transaxle with power source and driven device, described torque sensor The transaxle axiality setting at two ends.

Below in conjunction with the accompanying drawings the specific embodiment of the present invention is elaborated.

A kind of device eliminating torque sensor additional load, as shown in figure 1, include torque sensor 1, transaxle 2, axle Hold 3 and housing 4,

The transaxle 2 that the output shaft at described torque sensor 1 two ends is coaxial therewith respectively couples, and described transaxle 2 is protected Shield torque sensor 1 is not acted on by additional load, transmitting torque simultaneously；

Described transaxle 2 and the inner ring interference fit of bearing 2, bearing 3 described in the present embodiment is rolling bearing, described axle The effect holding 3 is supporting transaxle 2 it is ensured that the transaxle 2 at the two ends of torque sensor 1 has high axiality；

In described housing 4, two ends are provided with bearing mounting base hole, and bearing 3 is arranged on bearing mounting base in the hole, support transaxle 2, fixing described torque sensor 1.

Described in the embodiment of the present invention, bearing mounting base hole is completed by disposable boring, realizes both sides bearing mounting base Hole has high axiality.

The method for processing and assembling that the present invention eliminates the device of torque sensor additional load is as follows:

First, Design and Machining housing 4 and transaxle 2 are it is desirable to the high axiality that has in both sides bearing mounting base hole will Ask, in the course of processing, two bearings are installed the disposable boring of bore and completed；Need afterwards rolling bearing and transaxle 1, transaxle 2 are installed With rolling bearing inner ring interference fit；Then torque sensor 1 two ends are respectively pressed into transaxle 2, after entering and being attached to position, manually It is qualified that driving torque sensor 1 output shaft, no catching phenomenon are assert；Finally whole device is fixed on platform by rigid support It is ensured that connection is reliable and stable on frame, access torque signal gathered data line.

The embodiment of the present invention is based in engine rotation friction pair friction, lubrication simulation experiment system, measures bent axle-axle Friction loss between watt, investigates the needs of its frictional behavior, is provided with torque sensor 1 between motor and bent axle, in order to Eliminate the impact to torque sensor 1 for the additional external applied load, devise the present invention, two outfans of torque sensor 1 are first divided Axiality Jie Ru not require high transaxle 2, then by shaft coupling connection, transaxle 2 be linked up with motor and bent axle. In real work, if motor shaft and crankshaft support are coaxial, additional load acts on transaxle 2, eliminates additional The impact to torque sensor 1 for the load, serves the effect of being effectively protected, and improves the certainty of measurement of torque sensor 1 and makes Use reliability.

Above embodiments of the invention are described in detail, but described content have been only presently preferred embodiments of the present invention, It is not to be regarded as the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement etc., All should still belong within the patent covering scope of the present invention.

Claims (1)

1. a kind of eliminate torque sensor additional load device method for processing and assembling it is characterised in that: described elimination moment of torsion The device of sensor additional load includes torque sensor (1), transaxle (2), bearing (3) and housing (4), described torque sensing A transaxle (2) connection, described transaxle (2) and bearing (3) inner ring interference that the output shaft at device (1) two ends is coaxial therewith respectively Cooperation, described bearing (3) is arranged on the bearing mounting base in the hole of housing (4) interior two ends setting, and described bearing (3) is the axis of rolling Hold；

Methods described comprises the steps:

First, the bearing mounting base hole of described housing (4) two ends axiality is completed by disposable boring；

Afterwards, rolling bearing is arranged on bearing mounting base in the hole, by transaxle (2) and rolling bearing inner ring interference fit；

Afterwards, torque sensor (1) two ends output shaft is respectively pressed into transaxle (2), after entering and being attached to position, hand rotation moment of torsion It is qualified that the output shaft of sensor (1), no catching phenomenon are assert；

Finally, whole device is fixed on stand by rigid support, accesses torque signal gathered data line.