SU857753A1 - Torque meter - Google Patents

Description

(54) TORQUE METER

I

The invention relates to load measuring technology and can be used to measure the torque on a drilling machine rotor.

A device for measuring torque, containing coaxial drive and driven bushings, a mechanism for converting a torque into an axial force, made in the form of a swinging lever, located on the end of the driven bush and carrying a centering sleeve, rolling on a wedge, driving a sleeve, a self-centering roller shaft, transmitting converted force hydraulic mass doze 1.

However, this device does not provide the required measurement accuracy.

The closest to the proposed technical essence and the achieved result is a torque meter containing a drive coupling half with grooves, a driven shaft, a torque conversion mechanism into axial force and a hydraulic meter with a fixed sleeve, a supporting disk and a receiving element 2.

The disadvantage of such a meter is the low reliability and accuracy of the measurement.

The purpose of the invention is to increase the reliability and accuracy of measurement.

This goal is achieved by the fact that, in the device, the torque-to-axial force conversion mechanism is made in the form of three-shoulder arms mounted on perpendicular to the shaft and axes rigidly connected with it, and a concentric shaft of the movable disk with a shaped shaped surface, and the sensing element of the hydraulic force meter is made in the form of a filled-in working fluid of a rubber hose, concentrically located in an annular seat formed by a fixed sleeve and a supporting disc, one shoulder of each lever p It is placed in the corresponding groove of the leading coupling half, and the other two are placed in the shaped profiled surface of the movable disc.

Claims (2)

FIG. 1 shows the proposed meter, a general view; in fig. 2 - the mechanism of transformation of the moment in the axial force. The torque meter contains a driven shaft 1, on which the drive coupling half 2 is freely placed and the movable disk 3 of the torque conversion mechanism into axial force. Shaft 1 is provided with radially arranged axes 4 rigidly fixed on it, on which three-arm levers 6 with spherical rollers 7 are placed on the bearings 5 at the ends. One shoulder of each lever 6 enters the corresponding groove 8 of the half-coupling 2, and the other two shoulders are placed in the shaped profiled surface 9 of the movable disk 3, which is designed so that at any angle of rotation of the pin 6, during operation of the meter, the contact of the lever with the bearing disc 3 remains constant. The coupling half 2 is mounted on the shaft 1 on bearings 10. The hydraulic load cell contains a sensing element in the form of a high pressure rubber hose 11, a support disk 12 and a fixed sleeve 13. The hose 11 is concentrically located in an annular seat formed by a supporting disk 12 and sleeve 13. One end the hose is hermetically sealed with a plug, and the other end of it is connected to a pipeline 15 by means of a fitting 14, which hydraulically communicates the internal cavity with a secondary apparatus 16. A stop is placed between the movable disk 3 and the supporting disk 12. a new bearing 17 through which a force is transmitted to a hydraulic force meter. The torque meter is covered by a housing 18, the lower part of which simultaneously serves as an oil sump. The casing 18 is fastened with bolts to the fixed sleeve 13, the gauge is mounted on the rotor shaft 19 of the drilling unit on the key 20, it is held against axial displacement by the cup 21 and the bolts 22. The coupling half 2 is connected to the cardan joint of the rotor drive through the splined sleeve 23 the drilling rig, and the sleeve 13 is bolted 25 to the rotor 26 of the drilling rig. The meter works as follows. Before. In operation, the meter’s hydraulic system is filled with a working fluid with an initial pressure. When the rotor is turned on, the force from the drive mechanism is transmitted to the coupling half 2 and the arms of the levers 6, which are located in the grooves of the coupling half. The levers 6, turning relative to the axes 4 at some angle, are pressured by one of two opposite P 1x arms (depending on the direction of rotation) on the movable DISK 3. The force through the movable disk 3 and the thrust bearing 17 is transferred to the supporting disk 12, which moves Camping, compresses high pressure rubber hose 11. At the same time, the pressure of the fluid inside the hose increases (in proportion to the current torque) and the signal is transmitted to the secondary devices 16. The devices 16 allow visual control of the moment and recording it on the chart tape. When the torque is relieved by the pressure of the fluid, the elements of the meter return to their original position. When changing the direction of rotation, the meter works in the same way with the only difference that the force on the disks 3 and 12 is transmitted through the other arms of the levers 6. Using the meter allows to increase its reliability and accuracy due to the use of the moment in the axial force of the three-arm arms a movable disk with a shaped profiled surface, as well as through the use of a high-pressure rubber hose in a hydraulic force meter. The invention The torque meter comprising a drive coupling half with grooves, a driven shaft, a torque conversion mechanism into axial force, and a hydraulic force meter with a fixed sleeve, an anvil disk and a receiving element, and in order to improve reliability and accuracy of measurement; in it the mechanism for converting torque to axial force is made in the form of three-shoulder arms mounted on perpendicular to the shaft and axes rigidly connected with it, and of a movable disk concentric to the shaft with shaped a profiled surface, and the receiving element of the hydraulic load cell is made in the form of a rubber hose filled with a working body, concentrically located in a ring socket formed by a fixed sleeve and a supporting disc, one shoulder of each lever placed in the corresponding groove of the leading coupling half, and the other two are placed in a shaped the profiled surface of the rolling disk. Sources of information taken into account in examination 1, USSR Author's Certificate N 84824, cl. G 01 L 3/14, 10.12.48. 2. USSR author's certificate number 95281, cl. G 01 L 3/14, 30.10.50 (prototype). J-: L-i6 19 1 P Fig.1 20