CN102495423B

CN102495423B - Vibration exciter composed of 2-8 giant magnetostrictive vibrators in parallel

Info

Publication number: CN102495423B
Application number: CN 201110430481
Authority: CN
Inventors: 钟世航
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-21
Filing date: 2011-12-21
Publication date: 2013-05-08
Anticipated expiration: 2031-12-21
Also published as: CN102495423A

Abstract

The invention provides a vibration exciter composed of 2-8 giant magnetostrictive vibrators in parallel. An inner partition plate is arranged at the back part in a shell to divide the shell into a front cavity and a back cavity, and a vibration excitation main body is formed by the 2-8 vibrators formed by winding exciting coils outside giant magnetostrictive rods. The main body is installed in the front cavity of the shell; a back cushion block is arranged between the back end of each giant magnetostrictive rod and the inner partition plate; a front cushion block and a T-shaped vibration excitation rod are sequentially arranged at the front end of each giant magnetostrictive rod; and a compressed spring is arranged between the inner side of a base of each vibration excitation rod and the inner wall of the front end of the shell. A rod end head of each vibration excitation rod passes through a prefabricated hole at the front end of the shell to stretch out of the front end wall of the shell, and a delay controller is installed in the back cavity of the shell. One ends of a delay controller wire, a power supply wire and a zero-time signal wire are respectively connected with the delay controller, the other end of the zero-time signal wire is connected with a microcomputer host machine, and the other end of the delay controller wire is connected with the exciting coils, thereby synchronizing the time for exciting all the vibrators; and meanwhile, united vibration excitation force is excited, so as to meet requirements on shallow seismic prospecting.

Description

A kind of by 2～8 ultra-magnetic telescopic shake vibration exciters in parallel

Technical field

The present invention relates to a kind of a plurality of ultra-magnetic telescopic shake vibration exciter in parallel, is a kind of vibration exciter that is applicable to Shallow Seismic Reflection Method and tunnel working geology forecast use, possession seismic exploration equipment technical field.

Background technology

Usually with the mode that impulses of blast, hammering and controllable source, in the tunnel, drilled explosion, hammering shock exciting mode are commonly used in the construction earthquake prediction to the ground shallow seismic exploration, but the hammering shock exciting mode is often inconsistent for the strength that impulses at every turn by people's query.There is a kind of vibration exciter that drives with electric energy to overcome the above problems, the patent (CN200420041835.3) that is called " rareearth super magnetostrictive ultrasonic transducer active vibration device " as name, it disclose a kind of in order to making excite, the technical scheme of ultrasonic transducer vibration source; And for example utility model patent (ZL992170621) discloses a kind of " super magnetic striction ground sound wave transmission energy converter ", and it can be used for the launch requirements of sound wave in geology and physical prospecting engineering, but its energy shortage that impulses.And when doing shallow-layer (generally detecting in 150m) seismic prospecting on ground, the vibration exciter that weight is large, the power that impulses is strong must be arranged, obtain the reflection wave of the above degree of depth of 100m otherwise be difficult to impulse on ground; The existing vibration exciter energy shortage that impulses, can't be used for exciting obtaining 150m reflection wave far away, and heavy vibration exciter can't be used on face in tunnel working geology forecast.

Summary of the invention

The objective of the invention is to utilize the principle of super magnetic ultrasonic transduction, invent a kind of power of impulsing strong, can excite and obtain the above reflection wave of depth measurement 150m, rational in infrastructure, lightweight, as can to use on (for example on hillside more all, on face and abutment wall that tunnel working geology gives the correct time in advance) on the survey face of various different angle a kind of vibration exciter that is consisted of by the sub-parallel connection of a plurality of ultra-magnetic telescopic shake.

Technical scheme of the present invention: during by housing, rear cushion block, giant magnetostrictive rod, drive coil, front pods, T-shape shock excitation bar, stage clip, microcomputer delay controller, power switch, power lead, housing internal partition, delay controller wiring and zero, signal wire consists of.Rear portion in a housing of being made by metal or other hard materials is shaped with a housing internal partition, and internal partition is separated into ante-chamber and back cavity with housing.the giant magnetostrictive rod diameter is that 20～60mm, length are 200～400mm, install around outside giant magnetostrictive rod by drive coil and form shake, shock excitation main body of 2～8 shake parallel connection formations mutually, this shock excitation main body is arranged in the ante-chamber of housing, one rear cushion block all is housed between each giant magnetostrictive rod and housing internal partition, front end at giant magnetostrictive rod is equipped with front pods and T-shape shock excitation bar successively, between the base inboard of shock excitation bar and housing front inner wall, stage clip is housed, the pre-manufactured hole that the rod end of shock excitation bar passes on the housing front bulkhead stretches out the housing front bulkhead, the microcomputer delay controller is arranged in the cavity of housing rear end, wiring is controlled in time-delay, power lead with switch is connected with delay controller respectively with when being connected signal wire, in the time of zero, the other end of signal wire is connected with main frame, the other end of delay controller connecting line is connected with drive coil, the delay time of controlling after each shake is switched on is consistent, signal wire is communicated to delay time on Receiving Host by zero the time simultaneously, make time of exciting and each shake time synchronized that impulses, obtain to excite simultaneously the synthetic power that impulses that produces, satisfy shallow seismic exploration and tunnel tunnel face (vertical ground), on side wall, (vertical ground) impulses and makes the demand of geologic prediction.Advantage of the present invention:

1. the energy that impulses is large, satisfies the shallow seismic exploration requirements of one's work;

2. rational in infrastructure, lightweight, easy to operate, can use on the survey face of different angle.

Description of drawings

Fig. 1 is that structure master of the present invention looks diagrammatic cross-section.

Fig. 2 is the A-A sectional view of Fig. 1.

In figure: the 1-housing;

Cushion block after 2-;

The 3-giant magnetostrictive rod;

The 4-drive coil;

The 5-front pods;

6-T-shape shock excitation bar;

The 7-stage clip;

8-microcomputer delay controller;

The 9-power switch;

The 10-power lead;

11-housing internal partition;

The wiring of 12-delay controller;

Signal wire when 13-is zero.

Specific embodiments

When as shown in Figure 1, 2, the present invention is by housing 1, rear cushion block 2, giant magnetostrictive rod 3, drive coil 4, front pods 5, T-shape shock excitation bar 6, stage clip 7, microcomputer delay controller 8, power switch 9, power lead 10, housing internal partition 11, delay controller wiring 12 and zero, signal wire 13 consists of.Rear portion in a housing of being made by metal or other hard materials is shaped with a housing internal partition 11, and internal partition 11 is separated into ante-chamber and back cavity with housing 1.the diameter of giant magnetostrictive rod 3 is that 20～60mm, length are 200～400mm, install around in the outside of giant magnetostrictive rod 3 by drive coil 4 and form shake, shock excitation main body of 2～8 shake parallel connection formations mutually, this shock excitation main body is arranged in the ante-chamber of housing 1, cushion block 2 after being equipped with one between the rear end of each giant magnetostrictive rod 3 and housing internal partition 11, the rear end of giant magnetostrictive rod 3 presses closer on rear cushion block 2, front end at giant magnetostrictive rod 3 is equipped with front pods 5 and T-shape shock excitation bar 6 successively, between the base inboard of shock excitation bar 6 and the front inner wall of housing 1, stage clip 7 is housed, the rod end of shock excitation bar 6 pass on housing 1 front bulkhead preformed hole stretch out the housing front bulkhead.Microcomputer wiring delay controller 8 is arranged in housing 1 back cavity, time-delay is controlled wiring 12, is connected with delay controller 8 respectively with the power lead 10 of switch signal wire 13 when being connected, in the time of zero, the other end of signal wire 13 is connected with master microcomputer, and the other end of delay controller wiring 12 is connected with drive coil 4.

Claims

1. one kind is shaken son vibration exciters in parallel by 2～8 ultra-magnetic telescopics, during by housing, rear cushion block, giant magnetostrictive rod, drive coil, front pods, T-shape shock excitation bar, stage clip, microcomputer delay controller, power switch, power lead, housing internal partition, delay controller wiring and zero, signal wire consists of, it is characterized in that: the rear portion in the housing of being made by metal or other hard materials is shaped with a housing internal partition, and internal partition is separated into ante-chamber and back cavity with housing, be 20～60mm at diameter, length is that the giant magnetostrictive rod outside of 200～400mm installs around that to form a shake by drive coil, main body that impulses of 2～8 shake parallel connection formations mutually, this main body that impulses is arranged in the ante-chamber of housing, one rear cushion block all is housed between each giant magnetostrictive rod and housing internal partition, front end at giant magnetostrictive rod is equipped with front pods and T-shape shock excitation bar successively, between the base inboard of shock excitation bar and housing front inner wall, stage clip is housed, the pre-manufactured hole that the rod end of shock excitation bar passes on the housing front bulkhead stretches out the housing front bulkhead, the microcomputer delay controller is arranged in the housing back cavity, wiring is controlled in time-delay, power lead with power switch is connected with delay controller respectively with when being connected signal wire, in the time of zero, the other end of signal wire is connected with master microcomputer, the other end of delay controller connecting line is connected with drive coil, consistent by the delay time that delay controller is controlled after each shake is switched on, signal wire is communicated to delay time on Receiving Host by zero the time simultaneously, make time of exciting and each shake time synchronized that impulses, obtain to excite simultaneously the synthetic power that impulses that produces, satisfying impulses on the side wall of the tunnel tunnel face of shallow seismic exploration and vertical ground and vertical ground makes the demand of geologic prediction.