CN201569752U

CN201569752U - Vertical seismometer with period prolonging mechanism

Info

Publication number: CN201569752U
Application number: CN2009202926752U
Authority: CN
Inventors: 沈超声; 沈善杰; 孙丽娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2010-09-01
Anticipated expiration: 2019-12-30

Abstract

The utility model relates to a vertical seismometer with a period prolonging mechanism. The vertical seismometer consists of a movable component, two elastic hinges, a fixed support and a back-lash spring, wherein the movable component and the back-lash spring are supported on the fixed support via the two elastic hinges. The period prolonging mechanism consists of a triangular leaf spring, a hang spring and a rotating shaft, wherein the top end of the triangular leaf spring is connected to the upper end of the hang spring, the bottom surface of the triangular leaf spring is connected to the axial surface of the rotating shaft, a central line of the triangular leaf spring, a linking line of intersected centers of the elastic hinges and the hang spring are all arranged on the same vertical plane, the lower end of the hang spring is connected to the movable component after vertically penetrating through the same, and two ends of the rotating shaft are horizontally and movably supported at corresponding positions of the fixed support, thereby being capable of reducing volume of the vertical seismometer while preventing thickness of the elastic elements from being too thin.

Description

Have cycle stretch-out mechanism vertically to sseismograph

Technical field

The utility model relate to a kind of have cycle stretch-out mechanism vertically to sseismograph, needing to be particularly useful in little seabed of volume or the deep-well vertically to sseismograph.

Background technology

At present, existing is to be connected with corresponding fixed support 3 with the both sides of a kind of elastic hinge 2 with movable part 1 to sseismograph vertically, again with being connected on the corresponding fixed support 3 in the middle of the top of another kind of back of the body spring 4 with movable part 1, formation movable part 1 hangs on the vertical pendulum on the fixed support 3 simultaneously.The cycle length of this vertical pendulum has direct relation with the thickness of the flexible member that is connected, promptly at the vertical pendulum of same volume, the thickness of flexible member is thin more, hunting period is long more, but impact resistance is poor more, for the vertical pendulum that in seabed or deep-well, uses, require vertical little to the volume of sseismograph, and transportation is also difficult, and therefore, the thickness of flexible member is subjected to certain restriction, the thickness that is flexible member can not be too thin, but need again to reach vertically regulation vertical pendulum to sseismograph require hunting period (general provision 2 "), therefore, the existing requirement that vertically is difficult to satisfy longer hunting period to sseismograph.

Summary of the invention

The purpose of this utility model provide a kind of have cycle stretch-out mechanism vertically to sseismograph, on the basis of the vertical pendulum that forms connecting movable part with two kinds of flexible members, add a kind of cycle stretch-out mechanism of flexible member combination again, and the corresponding position of the another one that is connected movable part, make this movable part hang on fixed support, play the effect of the hunting period that prolongs vertical pendulum.

The technical solution of the utility model: a kind of have cycle stretch-out mechanism vertically to sseismograph, by a movable part, two elastic hinges, a fixed support and a back of the body spring constitute, movable part is bearing on the fixed support by two elastic hinges and a back of the body spring, it is characterized in that, cycle stretch-out mechanism is by a triangular plate spring, a hang spring and a rotating shaft constitute, the top of triangular plate spring connects the upper end of hang spring, and the bottom surface of triangular plate spring is connected the axial surface of rotating shaft, the center line of this triangular plate spring, the line at elastic hinge intersection center and hang spring are all in a vertical plane, the lower end of this hang spring is vertically passed and is connected on the movable part, rotating shaft with both ends horizontal ground expansion bearing on the corresponding position of fixed support.

Described triangular plate spring is an isosceles triangle sheet spring.

The utility model requires under the prerequisite at the vertical pendulum that reaches regulation owing to added cycle stretch-out mechanism hunting period, just can reduce this vertically to the volume of sseismograph, can not make the thickness of flexible member too thin again.

Description of drawings

Fig. 1 is an exemplary embodiments schematic perspective view of the present utility model.

Embodiment

Exemplary embodiments of the present utility model mainly is made of a movable part 1, two elastic hinges 2, fixed support 3, back of the body spring 4 and cycle stretch-out mechanism 5, as shown in Figure 1, and wherein:

Movable part 1 is that the upper end is that rectangle pouring weight, centre are that horizontal flattened rectangular piece and lower end are that vertical flattened rectangular piece forms one, belongs to prior art;

Elastic hinge 2 is intersected by spring leaf to be formed, these two elastic hinges 2 are connected two horizontal ends of the horizontal flattened rectangular piece of movable part 1 respectively with the upper end, and its lower end is connected and fixed on the opposite position of support 3, make movable part 1 can be around two elastic hinges, 2 intersection centers 0,0 ' the line swing, belong to prior art;

Fixed support 3 is pedestals of whole instrument, belongs to prior art;

Back of the body spring 4 upper ends are connected the rectangle pouring weight top of movable part 1, and its lower end is connected on the opposite position of fixed support 3 fronts, belongs to prior art;

Cycle stretch-out mechanism 5 is by a triangular plate spring 51, a hang spring 52 and a rotating shaft 53 constitute, wherein the top of triangular plate spring 51 connects the upper end D of hang spring 52, and the bottom surface of triangular plate spring 51 is connected the axial surface of rotating shaft 53, the center line DE of this triangular plate spring 51 (isosceles three shape sheet springs), elastic hinge 2 intersection centers 0,0 ' line and hang spring 52 all in a vertical plane, the lower end C of this hang spring 52 vertically passes and is connected on the vertical flattened rectangular piece of movable part 1, the both ends horizontal of rotating shaft 53 ground expansion bearing (rotating shaft 53 axis normal are in center line DE of triangular plate spring 51) on fixed support 3 corresponding positions.54 is a screw, and this screw is used for tightening rotating shaft 53.

Principle of work of the present utility model:

When vibration took place vertical pendulum, pendulum departed from zero-bit, and the resilient suspension system of vertical pendulum produces elastic restoring force.Because pendulum departs from zero-bit, hang spring 52 tensions produce horizontal component, and this horizontal component is opposite with the recovery of elasticity force direction that hinge 2 produces, and realize thus prolonging hunting period, by thickness and its angle of bend of adjustment that changes triangular plate spring 51, thus the natural period of oscillation of definite vertical pendulum.

When movable part 1 was motionless, promptly vertical pendulum remained static, and at this moment, the moment on the movable part 1 is zero.

Claims

One kind have cycle stretch-out mechanism vertically to sseismograph, by a movable part, two elastic hinges, a fixed support and a back of the body spring constitute, movable part is bearing on the fixed support by two elastic hinges and a back of the body spring, it is characterized in that, cycle stretch-out mechanism is by a triangular plate spring, a hang spring and a rotating shaft constitute, the top of triangular plate spring connects the upper end of hang spring, and the bottom surface of triangular plate spring is connected the axial surface of rotating shaft, the center line of this triangular plate spring, the line at elastic hinge intersection center and hang spring are all in a vertical plane, the lower end of this hang spring is vertically passed and is connected on the movable part, and the both ends horizontal ground expansion bearing of rotating shaft is on the corresponding position of fixed support.
According to claim 1 described a kind of have cycle stretch-out mechanism vertically to sseismograph, it is characterized in that described triangular plate spring is an isosceles triangle sheet spring.