SU1015319A1 - Torque measuring device - Google Patents

Abstract

A DEVICE FOR MEASURING A TORQUE, containing a master and a slave link, connected by means of a torque converter into a displacement consisting of an elastic beam, which is cantileverly fixed on one of the links and perpendicular to the axis of the device, a cam and a contacting element, and The axis of the motion recorder device associated with the cantilever end of the beam, characterized in that, in order to improve the measurement accuracy and simplify the design, the beam is made in the form of a flat spring with a contacting element on it, associated with a cam mounted on a different link, .. (L

Description

1101 The invention relates to load-measuring equipment and coins to be used to measure the torque transmitted to a shaft. A device for measuring torque, containing a master and a slave, connected by an elastic insert, a mechanism for converting torque to axial movement and a pneumatic displacement meter is known. However, the known device does not provide the required measurement accuracy of the closest to the proposed technical essence and the achieved The result is a torque measuring device containing a master and a slave unit connected by means of a torque to displacement transducer. e, consisting of an elastic beam, cantilever mounted on one of the links and located perpendicular to the axis of the device, and the cam contacting member and located on the axis of the device movement recorder ,, associated with the end of a cantilever beam C21. The disadvantages of such a device are low measurement accuracy and design complexity. The purpose of the invention is to improve the measurement accuracy and simplify the design of the device. The goal is achieved by the fact that in a device for measuring torque, containing a master and a slave link, connected by means of a torque converter to a displacement consisting of an elastic beam, cantilever mounted on one of the links and located perpendicular to the axis of the device, a cam and a contact element, and a motion recorder located along the axis of the device, associated with the cantilever end of the beam, the beam is made in the form of a flat spring with a contact element placed on it connected to the coolant chkom mounted on the other link. FIG. 1 shows a device for measuring torque, a section; FIG. 2 shows a section A-A in FIG. 1 in FIG. 3 and 4 are embodiments of the device. The device for measuring the torque contains a driving link in the form of an overhang 1 mounted on the shaft 2 on rolling bearings 3, a driven link in the form of a disk 4 rigidly connected to the shaft 2, and a torque converter to movement in the form of a flat spring 5, the contacting element 6 and the cam 7. The spring 5 is cantilevered fixed in the disk, and its free end is placed in the axial cavity 8 made in the shaft 2. The contacting element 6 is made, for example, in the form of a bearing and mounted on the spring 5. The cam 7 fortified by st The support 1 is connected with the contacting element 6. In the cavity 8 of the shaft 2 there is a probe 9 of a motion recorder, for example a 10-hour indicator, associated with the cantilever end of the spring 5. To eliminate the pulse of the indicator indicator 10, an embodiment of the device can be used. FIG. 3. With this. making the probe 9 is placed on guides with elastic ties, made. in the form of a spring: an inverse parallelogram 11, which is equipped with a hydraulic damper 12. For the measurement of the torque by electrical means, the embodiment of the device shown in FIG. 4. In this embodiment, the probe 9 is placed on guides with elastic connections, made in the form of a spring parallelogram .11. On the plate 13 of the spring parallelogram 11 there is installed a strain sensor lit of a recording device (not shown). The device operates as follows. When the hub 1 rotates, for example, by means of a belt drive, the rotation is transmitted to shaft 2 through a torque converter. The hub 1, turning on the shaft 2 in the bearings 3, rests through the cam 7 into the contacting element 6 and the spring 5. As the rigidity of the spring 5 in the plane coinciding with the plane of the axis of the shaft 2, is much less than in the plane perpendicular to this axis , then when the spring deflects, its end moves along the axis of the shaft 2. At the same time, the probe 9 of the motion recorder moves. The magnitude of the torque, proportional to the movement of the probe 9, is fixed on the scale of the indicator 10 or

using an electrical measuring instrument using a strain gauge. The implementation of the torque converter in the axial movement in the form of a flat spring placed

on it, the contacting element associated with the cam, and using it as a force-transmitting link allows to increase the measurement accuracy and simplify the design of the device.

FIG.

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Claims (1)

'' DEVICE FOR MEASUREMENT (TORQUE, * containing the driving and driven links connected by means of a torque to displacement transducer consisting of an elastic beam a movement recorder associated with the cantilever end of the beam, characterized in that, in order to improve the accuracy of measurement and simplify the design, the beam is made in the form of a flat spring placed on her contact element associated with the cam mounted on another link.