SU140593A1 - Two-component force meter for determining the horizontal and vertical components of the measured forces - Google Patents

Description

Two-component force meters are known for determining the horizontal and vertical components of the measured forces with the application of wire resistances attached to the strain gauges. However, such force meters are not suitable for dynamometering machines while maintaining their operational mode of operation.

The described power meter for dynamometer of agricultural machines attached to the tractor while maintaining their operational mode of operation is made in the form of connecting tensometric fingers of the double-support type with grooves for marking the resistance wire gauges. These fingers are inserted in place of the working fingers of the articulated joint of the attachment system during the tests of the attachments. If, however, mounted machines that have articulated joints with integral fingers are tested, then a transitional bracket with a console-type tensometric finger can be installed instead of a two-type tensometric finger.

FIG. 1 shows a force meter with a two-support strain-type finger; in fig. 2 is a section along A-A in FIG. one; in fig. 3 - force meter with a cantilever finger type.

A two-component force meter for determining the horizontal and vertical components of the measured forces consists of a finger 1 inserted into the hinge 2 of a tractor with a mounted machine, and wire strain gauges 5, 4, 5 and 5 pasted on the finger 1 so that their axes are located in two mutually perpendicular planes x 7–7 and 8–8, with plane 7–7 horizontal, and plane 8–8 vertical. In each of the planes, the sensors 5 and 5 are designed to measure the forces directly in this hinge joint 2, and the sensors 4 and 6, being included in the common network of the same sensors of other tenso elements, allow

directly obtain the total value of the horizontal and vertical components of the measured force. Summation is performed electrically when all sensors are connected via a bridge circuit. The annular grooves 9, and 10 on the finger / are designed to eliminate the effect of lateral displacement of the point of application of force in the connection 2, and the grooves 11 and 12 serve to protect the sensors 3, 4, 5 and 6 from damage.

In the event that the pivot pin 13 is made integral, for example welded, a transition bracket 15 is put on it, in which a strain gauge pin 16 of a cantilever type is installed, after which the torque wiring is carried out in the order described.

The described power meter makes it possible to significantly simplify and accelerate the carrying out of measurements of various efforts arising in the suspension systems of agricultural and other mounted implements on tractors and self-propelled chassis, improve the accuracy of determining the operating forces and facilitate the processing of measurement results.

Subject invent

Claims (2)

1. A two-component force meter for determining the horizontal and vertical components of the measured forces using wire resistances glued to strain gauges, characterized in that, in order to dynamometer agricultural machines attached to the tractor while maintaining their operational mode of operation, it is designed as connecting tensometric fingers double-support type with grooves for sticking wire resistance sensors inserted instead of swivel working fingers mounted th system at the time of testing mounted machines. 2. A measuring gauge according to claim 1, characterized in that, in order to dynamize hinged agricultural machines with integral fingers of articulated joints, a transitional bracket with a teisometric finger of a cantilever type is installed instead of a tensometric finger of the double-support type. FIG. one Fig 2 Fig.Z