SU696300A1 - Force measuring device - Google Patents

Description

(54) DEVICE FOR MEASURING FORCES

one

The invention relates to a measuring technique and can be used to measure ponderomotive forces interacting charged physical models with an external electric field and other physical physicochemical studies.

Scales are known that contain a bore and a support, made in the form of a hollow sphere, placed a bowl filled with a liquid, and a sensor of the angle of the beam 1.

The position of the weight and weights on the cups affects the accuracy of the removal of the angle of inclination of the rocker arms.

The closest to the proposed one is a device for measuring forces, containing a rocker, two hollow supports rigidly connected to it, placed in baths filled with liquid, and a sensor of the angle of inclination of the rocker arm 2. The presence of a common capacity from which the liquid enters the baths under the supports eliminates the possibility supplying electrical voltage to the object on the rocker arm without introducing additional connections that violate the measurement rules and, therefore, does not provide the possibility of using a device for measuring the forces of interaction of elec metrically charge zhennys TQji with an external electric field.

The purpose of the invention is to provide the possibility of using the device for measuring the interaction forces of electrically charged bodies with an external electric field.

This goal is achieved by the fact that, in the proposed device, the body supports are made electrically conductive, electrically insulated from each other, are placed in electrically insulated baths filled with an electrically conducting liquid, and the void supports are made of ferromagnetic material, and The internal surface of the bath is set by permanent magnets.

The device is represented in FIG.

The dielectric beam 1 is rigidly fastened to the dielectric axis 2. The supports 3 and 4 of the pavaiot in the baths .5 and 6 are filled with an electrically conductive fluid. In order to apply the electric voltage of the two polarities of the bath, they can be metric, placed on a dielectric base, and dielectric. In the first case

Claims (2)

0 directly to the baths connect current-carrying wires, and in the second case, electrodes 7 and 8 are lowered into the baths. Two insulated thin conductors 9 and 10 are fixed along the rocker arm on both sides. The conductors are sectioned, but connected to supports 3 and 4. On the arm 1, the test arm is installed a physical object (product) 11 to which an electrical voltage is applied. The weight of the product is compensated by hanging it in the bowl 12. When making supports in the form of hollow cylinders made of non-magnetic materials on. they are pressed into the same ferromagnetic rings 13 and 14, and permanent magnets 15 are installed under the rings at the bottom of the baths. A mirror 16 is mounted on the dielectric axis 2 connecting the floats, to which the light source beam 17 is directed. The light source can be installed separately from the device, but still for the entire time the device is calibrated and measured. The beam reflected from the mirror is directed to the scale 18, on which the readout is made. As a force returning to the zero position, this device uses an imbalance, either obtained as a result of the natural imbalance of masses in the supports relative to the horizontal axis, and an imbalance 19, which is artificially introduced. The device works as follows. After installing the physical object 11 on the yoke 1, conductors 9 and 10 are connected to it in the baths 5 and 6 an electrically conductive fluid is poured. Slotted, stacked in a bowl 12, the rocker is set in a horizontal position. The beam from the light source 17 is directed to the mirror 16, and the reflected beam from the top beam falls on a scale of 18, mounted on the wall of the laboratory. After the device is calmed down, the starting (zero) position is noted on the scale, from which further readings are performed both during calibration of the device with standard hinges and in experimental studies with the product. The sensitivity of the device is determined by the magnitude of the imbalance. The less n, the more sensitive the device. The sensitivity of the device also increases as the distance between the mirror 16 and the scale increases. Oh 18. The device allows to measure interaction with the external electric field in conditions when it is necessary to apply an electric voltage to the object installed on the rocker to eliminate the influence of the transverse forces arising in a non-uniform electric field; measure forces acting both vertically upwards and vertically downwards; To break the limits of measurement, which is almost impossible to accomplish with the help of known devices. Claim 1. Device for measuring forces, containing a rocker, two hollow supports rigidly connected to it, placed in baths filled with liquid, and a sensor, the angle of inclination of the rocker arm, in order to make it possible to use the device for measuring interaction forces electrically charged bodies with an external electric field, in which hollow supports are made electrically conductive, electrically insulated from each other and placed in electrically insulated baths filled with electrically conducting liquid . 2. Device P9 P.1, which is made up of the fact that the hollow supports are made of ferromagnetic material, and permanent magnets are installed on the inner surface of the bottom of the baths. Sources of information taken into account in the examination. 1. USSR author's certificate No. 393604, cl. G 01 G 1/22, 1971. 2. USSR author's certificate №468100, cl. G 01 G 1/22, 1973. and 4