SU28675A1 - A device for determining the strength of cement, binding abrasive articles, and the like. of materials - Google Patents

Description

The effect of the proposed device used to determine the strength of cement, abrasive products, etc., materials is based on the well-known principle of testing materials for determining the decay rate of oscillations of a trough whose prismatic support (center of pumping) is placed on the material to be tested.

In FIG. 1 shows the front view of the proposed device; FIG. 2rf side view; , figs. 3 is the same. view of the upper part of the modification of the device; FIG. 4-detail of the modification and its front view., /;

The handle, the instrument is made in the form of a bracket C (Fig. 1), the length of which can be replaced. On the top at the bracket there is a head with a single triangular prism or two points O fixed in it (Fig. 2 and 3) and with a pointer u1 in the form of an arrow set against the scale B. At the bottom process of the bracket there is a movable load Q serving balancing the device And bringing it to a vertical position, and a replaceable load P for changing the pressure of the point O on the material G to be used and for changing the energy of the oscillating movement of the device.

By installing the device with the O-points on the material, the bracket is set in a swinging motion, during which the points, more or less depending on the strength of the material, develop in it the place of their support, and the more this development, the more likely the oscillations of the tambourine will damp out.

In the modified device, in order to measure the deepening of the developed in the material while swinging the device, a device was used in the form of a second balanced pointer D, mounted against the scale E on the lift using a gear rack and wheel F and connected at the point G, by a thread or lever transmission h with spikes O device.

By the rate of attenuation or cessation of oscillations of the device and the magnitude of the node formed by the points of deepening in the material, the strength of the latter is judged.

The subject matter of the invention.

1. Instrument for determining the strength of cement, binder, abrasive products

;; and so on. of materials, with the use of a tambourine, characterized in that the tambourine,

; Equipped with a mobile load Q and equipped with one or two

Arstrie My O and pointer L, located protyv. scales B, in the form of a bracket, carrying replaceable cargo R.

2. Modification of the characterized, in paragraph 1 of the device, different

by applying a second balanced pointer D, set, for the purpose of adjustment, on the lifting support against the scale I, and the lever gear I to the indicator D from the support of the instrument. .

; 2.