RU2008613C1 - Device for measuring angular and linear displacements - Google Patents

Abstract

FIELD: test technique. SUBSTANCE: device has base 1, supporting plate 2 mounted on it that carries specimen holder 3, specimen loader 4 which is essentially rod 6 hinged on base 1 through double support 5 and provided with linear scale 7, weight 8 and stop 9 both mounted on rod 6, and displacement meter 10 in the form of rigidly fixed plate mounted on base 1 and provided with linear scale 11, angular scale 12, linear displacement indicator 13, and angular displacement indicator 14, the former being mounted on loader and the latter, on rod 15 installed on the same stop 9. Specimen holder 3 and stop 9 of specimen loader are identical flat wheels; specimen holder is installed on supporting plate 2 through adjusting mechanism that has nut 16 fixed on supporting plate 2 and screw 17 fitted in nut 16 for displacement; linear displacement indicator 13 is fixed on stop 9 and angular displacement indicator 14 is hinged through its center part on plate of displacement meter 10 and through one of its ends, on rod 15 fixed on stop 9. EFFECT: enlarged functional capabilities. 1 dwg

Description

 The invention relates to testing equipment, in particular for educational and laboratory devices, is intended for measuring linear and angular movements of the branches of cylindrical springs under compressive axial load, and can also be used in testing stems of reeds or other hollow stems of plants of small strength and fruits of vegetables and fruits .

 The prototype of the invention is a device for determining the deflection and angle of rotation of the beam, consisting of a base, a rack with holes fixed on it, a sample holder, a sample loading mechanism and a linear and angular displacement meter for measuring the beam section during testing.

 The purpose of the invention is the expansion of the scope of the device.

 This goal is achieved by the fact that in the device the sample holder is mounted on the rack by means of a control mechanism made in the form of a nut rigidly mounted on the rack and installed in the nut with the ability to move the screw, the linear displacement indicator is rigidly fixed on the stop, and the angular displacement indicator is pivotally fixed by the middle part of it on the plate of the displacement meter, and one of the ends is pivotally mounted on a rod rigidly fixed to the stop.

 The drawing shows the proposed device for measuring linear and angular displacements of the branches of cylindrical springs under axial load.

 The device comprises a base 1, a plate-rack 2 fixed on it, mounted on the last sample holder 3, a loading mechanism for the sample 4, made in the form of a pivotally mounted on the base 1 through a double rack 5 of the rod 6 with a linear scale 7, load 8 and stop 9 mounted on the rod 6, and the displacement meter 10, made in the form of a plate rigidly vertically mounted on the base 1 with a linear 11 and angular 12 scales and indicators of linear 13 and angular 14 movements, the first of which is mounted on the stop 9 of the mechanism I, and the second - on the rod 15, placed on the same stop 9. The sample holder 3 and the stop 9 of the loading mechanism are made in the form of identical flat circles, while the sample holder 3 is mounted on the rack plate 2 by means of a control mechanism made in the form of a nut 16, rigidly mounted on a rack-plate 2, located in the nut 16 with the possibility of moving the screw 17. The linear displacement indicator 13 is rigidly fixed to the stop 9, and the angular displacement indicator 14 is pivotally fixed with its middle part on the measuring plate joints 10, and one of the ends is pivotally mounted on the rod 15, rigidly fixed on the stop 9.

 The device operates as follows.

 In the initial state, the test spring is mounted on the sample holder 3. Bringing in contact with the spring emphasis 9, set the load 8 in a position in which the spring is loaded with a small initial force. In this position, the linear and angular displacement pointers 13 and 14 are moved by turning or unscrewing the screw 17 of the sample holder 3 on the nut 16 until they are combined with zero divisions of the linear 11 and angular 12 scales.

 During the test, the load 8 is moved, increasing the axial load acting on the spring. In this case, the linear displacements of the spring are counted on a linear scale 11, and the angular displacements (rotation angle) of the spring branches are measured on a scale of 12.

 The effectiveness of the described device lies in the possibility of measuring linear and angular displacements of the branch of cylindrical springs without additional special installation due to the rearrangement of the prototype sample holder. (56) Copyright certificate of the USSR N 1441172, cl. G 01 B 5/30, 1987.

Claims (1)

 DEVICE FOR MEASURING LINEAR AND ANGULAR MOVEMENTS OF SAMPLES, containing a base, a fixed rack plate, a sample holder mounted on a rack, a sample loading mechanism made in the form of a linear scale mounted on the base of the rod, a load and an abutment mounted on the rod, and a displacement meter made in the form of a plate mounted on a rack with linear and angular scales and indicators of linear and angular displacements, the first of which is mounted on the stop of the loading mechanism, and the second on the rod mounted on the same stop, characterized in that, in order to expand the scope of application, the sample holder and the emphasis of the loading mechanism are made in the form of identical flat circles, while the sample holder is mounted on the rack by means of a control mechanism made in the form of a nut rigidly mounted on the rack, and mounted in a nut with the ability to move the screw, the linear displacement indicator is rigidly fixed on the stop, and the angular displacement indicator is pivotally fixed with its middle part on the plate and measure I movements, and one of the ends is pivoted on a rod fixed to the fence.