CN206757056U - A kind of seismometer mechanical pendulum and seismometer - Google Patents

Abstract

The utility model provides a seismometer mechanical pendulum and a seismometer. The seismometer mechanical pendulum includes: a free end of the mechanical pendulum and a restraint end of the mechanical pendulum, the free end includes a swing weight and a fixed weight, and the restraint end includes Two reeds, the outer surface of the reed is provided with at least two circular protrusions, the circular protrusions are used to install spare reeds of different sizes to adjust the natural frequency; the fixed weight is installed between the two reeds , the swing weight is connected to the lower ends of the two reeds; a fixed block is also arranged between the two reeds, the fixed blocks are respectively connected to the upper ends of the two reeds, and the thickness of the fixed block is consistent with the thickness of the fixed weight; The mechanical pendulum is movably connected with the support of the seismometer through a fixed block to realize free swing; the mechanical pendulum of the seismometer provided by the utility model has the advantages of simple structure and the ability to adjust the natural frequency of the seismometer.

Description

A seismometer mechanical pendulum and seismometer

technical field

The utility model relates to the technical field of seismometers, in particular to a seismometer mechanical pendulum and a seismometer.

Background technique

At present, the seismometer is a seismic instrument that must be used in the modern seismic network. The mechanical pendulum structure of the seismometer in the prior art is complicated. The free end of the mechanical pendulum is assembled from many parts. The replacement or disassembly of parts will require a relatively large workload and complicated installation; and because it is a combination of multiple parts, the measurement error will increase correspondingly due to the accumulation of errors during production or use, and it is not easy to carry; And in the process of using, there is also a problem that the natural frequency of the mechanical pendulum cannot be adjusted, which in turn affects the range of use of the seismometer.

Contents of the invention

In view of this, the purpose of the embodiments of the present invention is to provide a seismometer mechanical pendulum and a seismometer to solve the above problems.

In the first aspect, the embodiment of the present utility model provides a mechanical pendulum of a seismometer, comprising: a free end of the mechanical pendulum and a constraint end of the mechanical pendulum, the free end comprising: a swing weight and a fixed weight, the constraint The end part includes two reeds, and the outer surface of the reeds is provided with at least two circular protrusions, and the circular protrusions are used to install spare reeds of different sizes to adjust the natural frequency;

The fixed weight is installed between the two reeds, and the swing weight is connected to the lower ends of the two reeds; a fixed block is also arranged between the two reeds, and the fixed block The upper ends of the two reeds are respectively connected, and the thickness of the fixed block is consistent with the thickness of the fixed weight; the mechanical pendulum is movably connected with the support of the seismometer through the fixed block to realize free swing .

In combination with the first aspect, the embodiments of the present utility model provide a first possible implementation manner of the first aspect, wherein:

The reed is in the shape of an open square frame, including two vertical frames and a horizontal frame;

The surfaces of the two vertical frames are symmetrically provided with two circular protrusions;

The bottom corners of the two vertical frames are respectively provided with a first circular through hole and a second circular through hole;

Both ends of the lateral frame are respectively provided with a third circular through hole and a fourth circular through hole.

In combination with the first aspect, the embodiment of the present utility model provides a second possible implementation manner of the first aspect, wherein:

The reed is I-shaped, a rectangular through hole is provided in the middle of the reed, and two circular protrusions are respectively arranged on the two frames of the reed;

The upper end of the reed is provided with two fifth circular through holes, and the lower end of the reed is provided with two sixth circular through holes.

In combination with the first aspect, the first possible implementation manner of the first aspect, or the second possible real-time manner of the first aspect, the embodiment of the present utility model provides a third possible implementation manner of the first aspect, wherein:

The fixed block is provided with two circular through holes;

The fixing block is connected with the two reeds through pins.

In combination with the first aspect, the embodiment of the present utility model provides a fourth possible implementation manner of the first aspect, wherein:

Both ends of the fixed block are provided with circular grooves, and the fixed block is fixedly installed on the round head bump of the seismometer support through the circular grooves.

In combination with the first aspect, the embodiment of the present utility model provides a fifth possible implementation manner of the first aspect, wherein:

The swing weight, the fixed weight and the two reeds are connected by pins.

In combination with the first possible implementation manner of the first aspect, the embodiment of the present utility model provides a sixth possible implementation manner of the first aspect, wherein:

The diameters of the first round hole, the second round hole, the third round hole and the fourth round hole are all 3.5 millimeters; the length of the vertical frame is 38.5 millimeters, and the width of the corner is 6mm.

In combination with the sixth possible implementation manner of the first aspect, the embodiment of the present utility model provides a seventh possible implementation manner of the first aspect, wherein:

The width of the vertical frame is 2-5 mm.

In combination with the first aspect, the embodiment of the present utility model provides an eighth possible implementation manner of the first aspect, wherein:

The reeds are made of beryllium bronze.

In a second aspect, an embodiment of the present invention provides a seismometer, which includes: the mechanical pendulum of the seismometer described in any one of the above implementation manners.

The mechanical pendulum of the seismometer and the seismometer provided by the embodiment of the utility model, the free end of the mechanical pendulum includes: a swing weight and a fixed weight, the restraint end of the mechanical pendulum includes two reeds, and the outer end of the reed The surface is provided with at least two circular protrusions, which are used to install spare reeds of different sizes to realize the adjustment of the natural frequency of the seismometer; the mechanical pendulum of the seismometer provided in this embodiment is composed of a swing weight Hammer, fixed weight and two reeds, simple structure, easy installation and use, because the structure is simplified compared with the mechanical pendulum structure in the prior art, the cumulative effect of errors formed in the process of production and use is reduced , at the same time, it is easy to carry and convenient for the staff to use; and the mechanical pendulum of the seismometer in this embodiment can adjust the natural frequency by installing spare reeds of different sizes on the reed, which avoids the problem of using the seismometer in the prior art. There is a problem that the frequency cannot be adjusted.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained based on these drawings without creative work.

Fig. 1 shows the structural representation of a kind of seismometer mechanical pendulum provided by the utility model embodiment 1;

Fig. 2 shows a schematic structural view of a seismometer mechanical pendulum fixed weight provided by Embodiment 1 of the present invention;

Fig. 3 shows a schematic structural view of a seismometer mechanical pendulum reed provided in Embodiment 1 of the present invention;

Fig. 4 shows a schematic structural view of a seismometer mechanical pendulum reed provided in Embodiment 2 of the present invention;

The reference signs are as follows:

11-swing weight; 12-fixed weight; 13-reed; 14-circular protrusion; 15-first circular through hole; 16-second circular through hole; 17-third circular through hole 18-the fourth circular through hole; 19-the fifth circular through hole; 20-the sixth circular through hole; 21-vertical frame; 22-horizontal frame; 23-corner; 24-rectangular through hole.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiment is only a part of the embodiments of the present utility model, rather than all the embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

At present, the seismometer is a necessary seismic instrument in the modern seismic network. The mechanical pendulum of the seismometer in the prior art is assembled from multiple parts, the structure is complex, and the natural frequency cannot be adjusted during use. In view of this, the embodiment of the utility model provides a seismometer mechanical pendulum, which has the advantage of simple structure, and can adjust its natural frequency by adjusting the reed of the mechanical pendulum.

The scheme will be described in detail below through specific embodiments.

Embodiment one

The embodiment shown in Figure 1 provides a seismometer mechanical pendulum in this embodiment, including: a mechanical pendulum free end and a mechanical pendulum constraining end, the mechanical pendulum free end and the mechanical pendulum constraining end are according to their Divided in terms of function, the constraining end of the mechanical pendulum is connected to the bracket of the seismometer for constraining the mechanical pendulum, and the free end of the mechanical pendulum can swing freely, wherein the free end includes: a swing weight 11 and a fixed weight 12, the binding end includes two reeds 13, and the outer surface of each reed 13 is provided with at least two circular protrusions 14, and the circular protrusions 14 are used to install spare reeds of different sizes, by installing Spare reeds of different sizes can be used to obtain different natural frequencies of the seismometer, and then realize the adjustment of the natural frequency of the seismometer to meet the needs of its application;

The above-mentioned spare reeds can be set in the shape of rectangular sheets, and each spare reed of different sizes corresponds to a different natural frequency. When the seismometer needs to adjust the natural frequency during use, it only needs to install different reeds;

The above-mentioned fixed weight 12 is installed between the two reeds 13, and the swinging weight 11 is connected with the lower ends of the two reeds 13;

A fixed block is also arranged between the above two reeds 13, and the fixed block is respectively connected to the upper ends of the two reeds 13, and the thickness of the fixed block is consistent with the thickness of the fixed weight 12; the mechanical pendulum passes through the The fixed block is flexibly connected with the support of the seismometer to realize the free swing of the free end.

As shown in Figure 2 and Figure 3, the fixed weight 12 is in the shape of a cube, the swing weight 11 can also be set in a cube shape, or other shapes, the swing weight 11 is provided with four circular through holes, and the corresponding fixed weight Four circular through holes are also arranged on the hammer; further, the above-mentioned reed is in the shape of an open square frame, including two vertical frames 21 and a horizontal frame 22, which are symmetrically arranged on the surfaces of the two vertical frames There are two circular protrusions 14 for installing spare reeds; the bottom ends of the above two vertical frames are respectively provided with corners 23 towards the inside of the frame, and the corners are provided with a first circular through hole 15 and a second circular hole. A third circular through hole 17 and a fourth circular through hole 18 are respectively provided at the two ends of the above-mentioned horizontal frame; when the free end of the mechanical pendulum is installed and fixed, the order of installation is the swing weight, the spring piece, fixed weight and reed, the swing weight is provided with four circular through holes, and the fixed weight is also provided with four circular through holes, wherein the two circles located at both ends of the swing weight Holes, the two round holes at both ends of the fixed weight, and the first round through hole and the second round through hole of the two reeds cooperate with each other and are connected together by pins; the two in the middle of the swing weight The circular through holes cooperate with the two circular through holes in the middle of the fixed weight, and are also connected by pins.

The above-mentioned fixed block is also provided with two circular through holes, the fixed block cooperates with the third circular through hole and the fourth circular through hole of the two reeds, and is connected by pins.

Further, the two ends of the above-mentioned fixed block are provided with circular grooves, and the inner surface of the circular groove is smooth, and the fixed block is fixedly installed on the round head bump of the seismometer bracket through the circular groove. The circular protruding head is placed in the above-mentioned circular groove, the fixed block can rotate freely, and then the mechanical pendulum can swing freely.

The natural frequency of the seismometer is a very important key factor affecting the measurement work of the seismometer. If the natural frequency is high, the elastic suspension system can have greater stiffness, good mechanical stability, and is conducive to transportation. The dynamic range of large signals is wide, but the disadvantages It is because the feedback depth is too large, which will put higher requirements on the low-frequency inherent noise of the circuit, so it is necessary to control the natural frequency so that it is within an appropriate range.

In the above embodiment, preferably, the diameters of the first round hole, the second round hole, the third round hole and the fourth round hole of the reed are all 3.5 mm; the length of the vertical frame is 38.5 mm , the width of the corner is 6 millimeters, and the width of the vertical frame is set to be 2-5 millimeters. At this time, the natural frequency of the seismometer is close to 6, which is close to the best performance state and belongs to the most easily adjustable range. And at this time, since the dimensions of other structures of the mechanical pendulum are fixed except for the reeds, the staff only need to install different spare reeds to adjust the size parameters of the reeds to adjust the natural frequency, which is simple and easy.

The mechanical pendulum provided by this embodiment is simplified in structure, and can meet the requirement of adjustable natural frequency.

Embodiment two

As shown in the embodiment shown in Figure 4, the reed 13 in this embodiment is I-shaped, and a rectangular through hole 24 is provided in the middle of the reed, and two circular holes are respectively arranged on the two frames of the reed. Protrusion 14, the circular protrusion is used to install spare reeds of different sizes, so as to achieve the purpose of adjusting the natural frequency of the seismometer.

The upper end of above-mentioned reed is provided with two 5th circular through holes 19, and the lower end of reed is provided with two 6th circular through holes 20; The circular through hole cooperates with the circular through hole on the fixed weight and the circular through hole on the swing weight, and is fixedly connected by pins.

Embodiment Three

A seismometer is provided in this embodiment, and the seismometer includes the mechanical pendulum of the seismometer mentioned in any of the above embodiments, the mechanical pendulum of the seismometer includes: a free end of the mechanical pendulum and a constrained end of the mechanical pendulum, the The free end portion comprises: a swing weight 11 and a fixed weight 12, and the constraint end portion comprises two reeds 13, and the outer surface of the reeds 13 is provided with at least two circular projections 14, and the circular projections 14 are used for To install spare reeds of different sizes to adjust the natural frequency; the above-mentioned fixed weight 12 is installed between the two reeds 13, and the swinging weight 11 is connected to the lower ends of the two reeds 13;

A fixed square is also arranged between the above-mentioned two reeds 13, and the fixed square is respectively connected to the upper ends of the above-mentioned two reeds, and the thickness of the fixed square is consistent with the thickness of the fixed weight; the mechanical pendulum passes through the fixed The cube is movably connected with the support of the seismometer to realize free swing.

The swing weight 11 is provided with four circular through holes, and the corresponding fixed weight is also provided with four circular through holes; Two vertical frames and one horizontal frame are symmetrically provided with two circular protrusions on the surfaces of the two vertical frames for installing spare reeds; the bottom ends of the above two vertical frames are respectively provided with The corner of the corner is provided with a first circular through hole and a second circular through hole; the two ends of the above-mentioned horizontal frame are respectively provided with a third circular through hole and a fourth circular through hole; the free end of the mechanical pendulum is in the When installing, the order of installation is the swing weight, the reed, the fixed weight and the reed, the two round holes at both ends of the swing weight, the two round holes at both ends of the fixed weight, and the two holes of the reed. The first circular through hole and the second circular through hole cooperate with each other and are connected together by pins; the two circular through holes in the middle of the swing weight and the two circular through holes in the middle of the fixed weight are also connected by pins. Columns are connected.

The above-mentioned fixed block is also provided with two circular through holes, the fixed block cooperates with the third circular through hole and the fourth circular through hole of the two reeds, and is also connected by pins.

Further, the two ends of the above-mentioned fixed block are provided with circular grooves, and the fixed block is fixedly installed on the round head bump of the seismometer bracket through the circular groove, and the round head is located in the circular groove, The fixed square can rotate freely, and then the mechanical pendulum can swing freely.

The natural frequency of the seismometer is a key factor that has a significant impact on the measurement work of the seismometer. If the natural frequency is high, the elastic suspension system can have greater stiffness, good mechanical stability, and is conducive to transportation. The dynamic range of large signals is wide, but The disadvantage is that the feedback depth is too large, which will put forward higher requirements on the low-frequency inherent noise of the circuit, so it is necessary to control the natural frequency to make it within a suitable range; the seismometer provided by this embodiment has the advantages of simple structure, portability and easy operation. Positive effect of natural frequency adjustment.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the utility model is used. It is only for the convenience of describing the utility model and simplifying the description, rather than Any indication or implication that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

It should be noted that at last: the above-described embodiment is only the specific implementation manner of the present utility model, in order to illustrate the technical scheme of the present utility model, rather than it is limited, and the protection scope of the present utility model is not limited thereto, Although the utility model has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that any person familiar with the technical field can still describe the aforementioned embodiments within the technical scope disclosed in the utility model. Modifications or easily conceivable changes to the technical solutions, or equivalent replacement of some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A seismometer mechanical pendulum, comprising: mechanical pendulum free end and mechanical pendulum restraint end, it is characterized in that, described free end comprises: swing weight and fixed weight, and described restraint end comprises two A reed, the outer surface of the reed is provided with at least two circular protrusions, and the circular protrusions are used to install spare reeds of different sizes to adjust the natural frequency; The fixed weight is installed between the two reeds, and the swing weight is connected to the lower ends of the two reeds; a fixed block is also arranged between the two reeds, and the fixed block The upper ends of the two reeds are respectively connected, and the thickness of the fixed block is consistent with the thickness of the fixed weight; the mechanical pendulum is movably connected with the support of the seismometer through the fixed block to realize free swing . 2. The seismometer mechanical pendulum according to claim 1, wherein the reed is an open square frame, comprising two vertical frames and a horizontal frame; The surfaces of the two vertical frames are symmetrically provided with two circular protrusions; The bottom corners of the two vertical frames are respectively provided with a first circular through hole and a second circular through hole; Both ends of the lateral frame are respectively provided with a third circular through hole and a fourth circular through hole. 3. The mechanical pendulum of the seismometer according to claim 1, wherein the reed is I-shaped, a rectangular through hole is provided at the middle of the reed, and two frames of the reed are respectively There are two circular protrusions; The upper end of the reed is provided with two fifth circular through holes, and the lower end of the reed is provided with two sixth circular through holes. 4. The seismometer mechanical pendulum according to any one of claims 1-3, wherein two circular through holes are arranged on the fixed block; The fixing block is connected with the two reeds through pins. 5. The mechanical pendulum of the seismometer according to claim 1, wherein a circular groove is arranged at both ends of the fixed square, and the fixed square is fixedly installed on the seismometer through the circular groove. on the round bump of the bracket. 6 . The mechanical pendulum of the seismometer according to claim 1 , characterized in that, the swinging weight, the fixed weight and the two reeds are connected by pins. 7 . 7. The seismometer mechanical pendulum according to claim 2, characterized in that, the first circular hole, the second circular hole, the third circular hole and the fourth circular hole The diameter of the circular hole is 3.5 millimeters; the length of the vertical frame is 38.5 millimeters, and the width of the corner is 6 millimeters. 8. The mechanical pendulum of the seismometer according to claim 7, wherein the width of the vertical frame is 2-5 mm. 9. The mechanical pendulum of the seismometer according to claim 1, wherein the reed is made of beryllium bronze. 10. A seismometer, characterized in that the seismometer comprises: the seismometer mechanical pendulum according to any one of claims 1-9.