The torque converter

 

(57) Abstract:

The inventive transducer includes a housing, torsion bar and the toothed disc, non-contact sensors; a device for calibration of the transducer in statics contains guides for shifting one of the proximity sensors on a circle concentric with the respective toothed disk micrometer head for displacement measurement and the bracket that connects the sensor with the timing disk during calibration. 3 Il.

The invention relates to measuring devices designed for measuring torque on a rotating shaft.

Known Converter, consisting of coaxial shafts connected by the elastic element. On the shafts rigidly mounted gear drives, but against them on the body non-contact pulse sensors. When the rotation shaft transmitting torque pulses generated by the proximity sensors come on showing the phase meter device with a data processing unit that converts the angular phase difference in the readings of the torque element [1]

The disadvantage of this Converter is the impossibility of his gradirovski static, i.e. non-rotating shafts, which dramatically uslog the Telem torque.

The technical result of the invention is to enable the calibration of the torque Converter in statics to simplify the design and increase reliability.

The technical result is achieved by the fact that in the torque Converter, comprising a housing, torsion bar and the toothed disc and the non-contact sensors located near the notched discs, introduced the device for calibration of a torque Converter in statics, containing guides for shifting one of the proximity sensors on a circle concentric with the respective toothed disk, or tangent to this circle, the micrometer head to change the specified offset, and a bracket for connecting a shift of the non-contact sensor with a toothed disk in the calibration.

In Fig. 1 shows a torque Converter element, General view; Fig. 2 a section a-a (Fig.1), and Fig. 3 a section a-a for the case of calibration of the Converter.

The invention can be implemented in the form of the transducer (Fig. 1) comprising: a housing 1 that has proximity sensors 2 and 3, for example, induction type, torsion bar 4 with toothed disks 5 and 6. Proximity sensor 2 Ustka 10 with capability of its contact with the socket 7. On the other hand the plate lifts the spring 11 (Fig. 2) in the case of the calibration of the transducer on the toothed disk 5 is fixed bracket 12 by screws 13. The torsion bar 4 by means of a coupling connects the lead 14 and slave shafts 15 of the transmission. Proximity sensors 2 and 3 are arranged with a small gap opposite the toothed disks 5 and 6, the sensor 2 has the possibility of displacement along the guide rails 8 and 9 tangent to circles concentric with the toothed disk 5. Micrometer head 10 provides the ability to measure this displacement. In the initial position of the axis of the sensor 2 and sensor 3-axis lie in the same plane passing through the axis of the torsion bar 4.

The torque measurement based on the measurement of the angle of torsion of the torsion bar 4 fascinosum method.

The Converter operates as follows.

When the transmission of torque from the rotating shaft 14 on the shaft 15 of the torsion bar 4 is twisting the last, and you receive the angular displacement of the toothed disc 5 relative to the toothed disk 6. This offset causes a phase shift in the pulses coming from the proximity sensors 2 and 3 showing the device, where they are converted into a reading with measured units of torque (HM).

wyroku comparison of the readings of the transducer with an exemplary torque. To ensure calibration of the transducer in a static (i.e. non-rotating the torsion bar 4) provides for the possibility of non-contact displacement sensor 2 from the initial position, in proportion to the angle of twisting of the torsion bar 4 and the measurement of this displacement by means of a micrometer head 10.

Calibration is performed as follows. On the toothed disk 5 (Fig. 3) is fixed to the bracket 12 by screws 13, proximity sensor 2 is in the initial position. The screw 13 by the rotation is brought into contact with the sensor, bolts guide 8 is weakened. Driven shaft 15 of the transmission is retarded from turning, and the drive shaft 14 is an exemplary torque, for example, counterclockwise (from the side of the shaft 15).

At the first stage of the calibration range calibration from 0 to Mn (Mn - nominal torque) is broken down into several (usually 5 to 10) degrees. At each step in the calibration is the dependence mm:

ai= f(Mi), (1)

where Mitorque at the i-stage calibration (HM);

aithe corresponding offset of the sensor 2.

The second stage of the calibration shaft 15 restoratives with the possibility of free rotation by the drive shaft 14, the non-contact sensor 2 on the previously detected offset value aibut in the direction opposite to the offset, which was on the 1st stage of calibration. These displacement sensor 2 mimic the angular displacement of the toothed disc 5 relative to the disk 6 while the exemplary application of torque causes a phase shift in the pulses coming from the proximity sensors to indicate the device, where they are converted into a reading of torque (HM). So the second stage of the calibration is obtained dependence:

M*i= f(ai)

where M*idata reading device of the Converter.

With relation (1) is obtained by the calibration characteristics of the transducer; HM:

M*i= f(Mi).

Thus, using a simple device for the calibration of the transducer in statics is possible to achieve a technical result simplify the design and increase reliability.

Torque Converter, comprising a housing, torsion bar and the toothed disc and the non-contact sensors located near the notched discs, characterized in that it introduced the device for calibration of a torque Converter in statics, containing guides for shifting one of the proximity sensors on aceskay head for measuring a specified offset and a bracket for connecting a shift of the non-contact sensor with a toothed disk in the calibration.

 

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2 dwg

Torque meter // 2326357

FIELD: force-measuring techniques.

SUBSTANCE: meter comprises packer located in the power transfer channel and deformed by the action of measured torque as well as device for torque registration according to packer deformation. The packer contains two fixed parts (inlet and outlet parts) mounted on the fixed part of rotating drive and deforming part positioned between fixed parts. The deforming part is provided with eight slotted parts which connections consist of turns of torque element applied to packer for torque pickup and charging element existing independently of torque element and intended for packer load support.

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