SU1035546A2 - Geophone - Google Patents

Abstract

1. SEISMIC RECEIVER on auth. Me 322742, which is distinguished by the fact that, with its reliable operation, by ensuring optimum rigidity of the beams, the inert mass is made of two rigidly connected between the parts; 2. Sschmspriemnik under item 1, about t p pich and ya schSh. And so that parts are inert are connected by a tight nut. (P G: SP ate 4 a

Description

110 The device relates to seismic surveying and can be used to record seismic waves. According to the main author. St “No. 322742 is known for a seismic receiver, the inertial mass containing the case, and the motion recorder, with the inert mass under the hanging. Not two previously bent rigidly tapered. the ends on the body of the flat elastic Bapochkas, at the top and bottom of the rigidly attached middle to the inert mass and tucked from the ends of the adjusting screws tl. A disadvantage of the known seismic receiver is the difficulty of adjusting the bar to the desired rigidity, due to the fact that the inertial mass is a common, inseparable link between the beams, the subsequent regulation of which is carried out separately. In this case, each individual value of stiffness and, consequently, the stress state are not definable, and this, in turn, does not allow to calculate the reliability of the seismic receiver. The purpose of the invention is to increase reliability by ensuring optimum rigidity of the beams. The goal is achieved by being inert, the mass is made of two rigidly connected. self parts. In this case, parts of the inertial mass can be connected with a clamping nut. Wah FIG. 1 shows the elastic suspension of inertial mass, general view; in fig. 2 version of the design of a seismic receiver1 with an inert mass, parts of which. connected by a nut; in fig. 3 view A in FIG. one; in fig. 4 is a plot of the force of the elastic suspension versus displacement. The seismic receiver contains a body 1, in which beams 2 and 3 are rigidly clamped, to which it is suspended inert. a mass consisting of two parts 4 and 5 rigidly fastened together by a screw 6 or a tightening nut 7 (figure 2). Pressing beams 2 and 3 with torgyuv is carried out by adjusting screws 8 and 9, and the fixing of part 4 of the mass is done with screw 10. 62 It was established by experiments that the flat (pre-curved) elastic caps rigidly fixed at the ends, with a certain vertical displacement, have a trough characteristic 11 (FIG. 4). If such beams are pressed from the ends, then the haravlgeistics becomes nonlinear (characteristic 12) and at work site B the rigidity of the beams decreases to zero depending on the pressure of the ends of the beams. From the change in the rigidity of the suspension, the period of natural oscillations up big, in advance given. By re-adjusting the elastic suspension for a certain period of natural oscillations, it is possible to record vertical oscillations in a wider range. In order to ensure the same optimal rigidity of the beams and, consequently, increase the reliability and durability of the geophone, the adjustment to the required characteristic of each beam is carried out separately. For this purpose, one part 4 of the inertial mass with screw 6 (or nut 7) is fastened to beam 2 and adjustment screw 8 is achieved with the desired characteristic. When this beam 2 must be calculated on the weight of this part 4 of inert mass. Then the same tuning operation is performed with part 5 of the inert mass. After adjustment, the two parts are interconnected. Separate adjustment of each beam greatly simplifies the setting operation | and therefore shortens the time by. regulating the seismic receiver, while ensuring the same optimal voltage of the state of the beams. The tight nut 7 allows to simplify the manufacturing technology of inert maosa. This is achieved by changing the gap between parts 4 and 5 of the inertial mass, it is possible to compensate for inaccuracies in their manufacture and, thus, to ensure the distance between the beams 2 and 3, equal to the total length of the inert mass enclosed between the beams.

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Claims (2)

(54) 1. SEISMIC RECEIVER No. 322742, due to the fact that, in order to increase reliability by providing optimal stiffness of the beams, the inert mass is made of two parts rigidly connected to each other. 2.-C ^ receiver in π. 1, ich ich to> u / i with the fact that the parts of the inert Mars are connected by a coupling nut.