RU32610U1 - Device for exciting seismic vibrations - Google Patents

Description

Device for exciting seismic vibrations.

The utility model relates to non-explosive sources of seismic vibrations and is intended to create seismic waves by impulse force actions on the soil surface, in particular, to electromagnetic type devices.

A device is known for exciting seismic vibrations with an electromagnetic drive (see patent RU 2171478 C1 of 23.02.2000., IPC 7 G01 V 1/02, publ. 27.07.20r1.). The device contains a housing, an inert mass and an electromagnetic drive including an inductor, the magnetic system of which consists of a magnetic circuit and a winding, as well as an armature. The housing is formed by the side walls of the runners and the cross member. At the same time, the side walls of each of the runners perform the function of a guide, and the bottoms form a base plate. The device also contains shock absorbers, which are single-acting dampers. They are installed between the edges of the inert mass and the bottom in each of the runners. The bottom of the runners are rigidly connected with their side walls. In each runner, an inertial mass, an inductor and an anchor are installed successively upward from the bottom. The inductor has the ability to axial movement without rotation.

The disadvantage of the known design can be considered limited application. This is due to the possibility of obtaining sufficient seismic efficiency only in the winter season. In addition, the device does not sufficiently use the active part of the drive inductor due to the presence of dispersion fields in the frontal parts of the winding. SU 988075 A, from 29. 12. 1980., IPC 3 G01 V 1/04, publ. 07/23/1985., Bull.

Number 27. The device comprises an outer casing, an inert mass, a guide column, a support plate, shock absorbers, as well as an electromechanical drive including an armature, the ring magnetic system of which contains a magnetic circuit installed in its casing. The drive also contains an inductor located with the possibility of axial movement along the guide column without rotation. The ring magnetic system of the inductor contains a magnetic circuit installed in its housing, rigidly connected with an inert mass, and a winding. The base plate is rigidly connected to the anchor. These are common features with the claimed design.

The armature and the inductor of the drive are coaxial, their windings are in annular grooves on the side surfaces of the magnetic circuits facing each other. The lower end of the guide column is free and centered by a guide protrusion that is rigidly connected to the armature housing located outside the inductor. An electrodynamic type drive is used as an electromechanical drive.

A disadvantage of the known design can be considered the low efficiency of converting electrical energy into mechanical energy, which is transmitted in the form of a pulse of force action on the soil surface. This is due to the use of an electrodynamic type drive. In addition, the known device has significant overall dimensions, which limits its use.

The utility model is based on the task of creating such a device for exciting seismic vibrations, in which a new design layout using an electromagnetic type drive and ensuring the rigidity and centering of each of the moving parts of the drive, made it possible to obtain minimum weight and size parameters.

2 versatility in application and maximum efficiency

conversion of electrical energy into mechanical energy.

To solve the problem in a device for exciting seismic vibrations, containing an outer casing, an inert mass, a guide column, a base plate, shock absorbers, as well as an electromechanical drive including an armature, an annular magnetic system of which is installed in its housing, and an inductor located with the possibility of axial moving along the guide column without turning, while its annular magnetic system contains a magnetic circuit installed in its housing, rigidly connected with an inert mass, and winding ku, and the base plate is rigidly connected to the anchor, according to a utility model, the base plate is connected to the anchor by a guide column. On the latter, an inductor and an anchor mounted on a guide column are placed upward from the base plate. The inductor housing is rigidly connected by the outer housing with an inert mass mounted on its upper end. The guide column is connected to the inductor by means of a figured button. An electromagnetic type drive is used as an electromechanical drive, and the inductor winding is placed in an annular groove made at the upper end of its magnetic circuit.

The guide column and the base plate may be integrally formed.

The rigid connection of the anchor with the base plate using the guide column, minimizes the number of elements not directly involved in the creation of force.

Installing from the base plate upwards on the guide column of the inductor and the armature, which is fixed at the same time on the guide column, makes it most simple to implement an electromagnetic type drive.

3 structural elements connected to the inductor and additionally

reduce the number of elements that are not directly involved in the creation of force.

The connection of the guide column with the inductor with the help of a figured button provides centering of the inductor and its axial movement without rotation, which ensures design reliability.

Placing the inductor winding in an annular groove made at its upper end makes it possible to constructively implement an electromagnetic type drive and significantly increase the efficiency of converting electrical energy into mechanical energy.

Thus, the proposed layout allows to improve overall dimensions, increase the efficiency of converting electrical energy into mechanical energy, reduce manufacturing costs, increase the reliability of the design, which ensures the universality of the device.

The ability to perform a guide column and a base plate as a whole further reduces the mass of the part of the structure that directly affects the soil.

The inventive device is illustrated in the drawing, which shows its longitudinal section.

A device for exciting seismic vibrations includes an outer casing 1, an inert mass 2, a guide column 3, a support plate 4 and shock absorbers 5. An electromagnetic type drive is used as an electromechanical drive. It includes an armature 6, the ring magnetic system of which contains a magnetic circuit 7 installed in its housing 8, as well as an inductor 9. The ring magnetic system of the inductor contains a magnetic circuit 10, which is installed in its housing 11, and a winding 12. The base plate 4 and the armature 6 are rigidly interconnected using a guide column 3. On the column 3 from the reference

4 plates 4 are placed successively upwards: inductor 9, with the possibility of

axial displacement without rotation, and anchor 6.

The housing 11 of the inductor 9 is rigidly connected to the outer housing 1 with an inert mass 2 mounted on its upper end. The guide column 3 is connected to the inductor 9 by means of a figured key 13. This allows simultaneous axial movement of the guide column 3 without turning and centering the inductor 6.

The winding 12 of the inductor 9 is placed in an annular groove 14 located on the upper end of its magnetic circuit 10. The base plate 4 and the guide column 3 can be made as a whole. As shock absorbers 5, for example, spring-type shock absorbers are used. They are installed between the inert mass 2 and the housing 8 of the anchor 6.

Windows 15 are provided in the outer casing 1 for measuring the air gap between the armature 6 and the inductor 9. The size of the air gap is selected based on the maximum force produced by the mutual movement of the armature 6 and the inductor 9. At the same time, there is no need for shockless mutual movement of the armature and the inductor when working on various soils. The magnitude of the movement of the inductor 9 is determined by the total mass of it and the elements 1 and 2, the amplitude and duration of the pulse of the force action. In the working state, the windows are closed, for example, with rubber belts 16. The air gap is adjusted by turning the screws 17 of the shock absorbers 5. A current lead is connected to the winding 12. For transporting the device on an inert mass 2 transport jaws are installed 19. Anchor 6 is rigidly fixed to the guide column 3, for example, using the stop 20 and fasteners (not shown in the drawing).

The device operates as follows. When a current pulse flows through the winding 12 between the magnetic circuits 7 and 10, respectively, of the armature 6 and the inductor 9, a pulse of mechanical force occurs, under the influence of which the armature is attracted to the inductor and through the guide column 3

5

and the base plate 4 exerts a force on the soil, exciting seismic waves in it. Under the influence of a reactive impulse, an inductor 9 with an inert mass 2 and a housing 1 moves upward, choosing the air gap between the inductor 9 and the armature 6. The key 13 centers the rigid structure of the inductor, the outer casing, and the inert mass relative to the guide column 3 and ensures its axial moving without cranking.

After the end of the current pulse in the winding 12 of the inductor 9, and, consequently, of the force acting on the soil, the inductor 9 returns to its original state under the action of gravity, while its kinetic energy is quenched by the shock absorber 5. In the process of creating mechanical force, good transmission efficiency is achieved because the layout has a maximum fill factor of the volume of the elements directly involved in its creation. This arrangement also ensures the minimization of overall dimensions and, therefore, expands the range of application of the device in hard-to-reach areas, for example, in mountainous conditions.

Applicant's signature:

Director

OJSC Plant Potential

V.P. Tkachenko

Claims (2)

1. A device for exciting seismic vibrations, comprising an outer casing, an inert mass, a guide column, a support plate, shock absorbers, and an electromechanical drive including an armature, the ring magnetic system of which contains a magnetic circuit installed in its housing, and an inductor arranged axially moving along the guide column without turning, while its annular magnetic system contains a magnetic circuit installed in its housing, rigidly connected with an inert mass, and a winding, and about the pore plate is rigidly connected to the anchor, characterized in that the base plate is connected to the anchor by a guide column, the inductor and the anchor mounted on the guide column are placed on the latter upward from the base plate, the inductor body is rigidly connected by the outer casing with an inert mass mounted on its upper end , the guide column is connected to the inductor using a shaped key, an electromagnetic type drive is used as an electromechanical drive, and the inductor winding is placed in an annular groove made to the top the end of his magnetic circuit. 2. The device according to claim 1, characterized in that the base plate and the guide column are made as a whole.