CN111694049A - Transverse wave excitation source device and using method thereof - Google Patents
Transverse wave excitation source device and using method thereof Download PDFInfo
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- CN111694049A CN111694049A CN202010564688.1A CN202010564688A CN111694049A CN 111694049 A CN111694049 A CN 111694049A CN 202010564688 A CN202010564688 A CN 202010564688A CN 111694049 A CN111694049 A CN 111694049A
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- 230000005284 excitation Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000009467 reduction Effects 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000009471 action Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/143—Generating seismic energy using mechanical driving means, e.g. motor driven shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/12—Signal generation
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Abstract
The invention provides a transverse wave excitation source device and a using method thereof. When the device works, the electromagnet is electrified to generate magnetic force to adsorb the exciting hammer, the rope winding component is operated, the electromagnet and the exciting hammer move upwards along an arc, the electromagnet is powered off to release the exciting hammer, and the exciting hammer is enabled to strike the hammering component fixed on the ground along the horizontal direction under the action of gravity to complete transverse wave excitation. The vibration exciting hammer is detachable and selectable in size, and vibration exciting energy can be controlled; transverse wave excitation can be quickly realized by adsorbing and releasing the exciting hammer by the electromagnet; the whole device is convenient to disassemble and assemble and is suitable for field operation.
Description
Technical Field
The invention belongs to the technical field of geophysical exploration, and particularly relates to a transverse wave excitation source device and a using method thereof.
Background
The seismic waves are classified into two categories, namely longitudinal waves and transverse waves, wherein the longitudinal waves refer to compression waves, namely the vibration direction of protons is consistent with the propagation direction; shear waves are shear waves, i.e. the direction of vibration of protons is perpendicular to the direction of wave propagation. The shear wave velocity is an important parameter for researching the dynamic characteristics of the rock-soil mass, and has important significance for future research.
However, in the prior art, the common transverse wave vibration source is mainly generated by two methods of artificial vibration or explosive detonator. However, the above method has the following disadvantages: 1) the method for artificially exciting the vibration source is characterized in that a vibration source and a vibration source vehicle are knocked by manually holding a sledge hammer, but the problems that the knocking excitation energy is too small to meet the exploration depth, the generated energy is unstable, the generated energy is uncontrollable and the like exist when the sledge hammer is manually held to knock the vibration source; although the excitation energy of the seismic source vehicle can meet the problem of exploration depth, the seismic source vehicle has a series of problems of high requirement on working conditions, complex operation, high cost and the like. 2) The explosive has good shock excitation effect, but has a plurality of limitations for use in cities. Therefore, there is a need for a new transverse wave excitation source device that can be conveniently carried for field operation and can generate stable and controllable energy by excitation.
Disclosure of Invention
The invention aims to provide a transverse wave excitation source device and a using method thereof, which have the advantages of convenience in carrying, capability of quickly realizing transverse wave excitation, stable and controllable generated energy and no field influence on the premise of saving manpower, and are widely applied to the technical fields of geophysical exploration and the like. In order to achieve the purpose, the invention adopts the following technical scheme:
a shear wave excitation source apparatus comprising:
the base is rotatably provided with a guide wheel; a rigid rope is wound on the guide wheel; one end of the rigid rope is connected with a rope retracting component, and the other end of the rigid rope is connected with an electromagnet; the electromagnet is connected with a power supply in series; a control switch is arranged between the electromagnet and the power supply;
the swinging rod is used for driving the vibration hammer to swing by taking the base as a base point, one end of the swinging rod is rotatably installed on the base, and the other end of the swinging rod is connected with the vibration hammer;
one end of the limiting plate is fixed on the upper surface of the base; the limiting plate is horizontally arranged and is positioned above the oscillating rod; a section of the limiting plate, which is far away from the base, is provided with a limiting hole; the rigid rope penetrates through the limiting hole; the electromagnet is positioned below the limiting plate; when the swinging rod rotates to the horizontal position, the swinging rod is parallel to the limiting plate, and the limiting hole is matched with the electromagnet;
the telescopic support is used for adjusting the height of the base so that the vibration exciter can horizontally hammer a hammering component, and the upper end of the telescopic support is fixed on the bottom surface of the base; the hammering member is located directly below the base.
Preferably, the base comprises a pair of bottom plates which are arranged up and down symmetrically;
each bottom plate is provided with a vertical through groove for accommodating the swing rod and a hemispherical groove for limiting the swing rod; the two opposite side surfaces of the pair of bottom plates are respectively provided with the hemispherical grooves; wherein:
the vertical through groove extends to the edge of the bottom plate; the swinging rod swings along the vertical through groove;
the hemispherical groove is intersected with a section of the vertical through groove far away from the edge; one end of the swinging rod rotates in a space defined by the pair of hemispherical grooves.
Preferably, the hammering member is a steel plate.
Preferably, the rope retracting member comprises a gear reducer; the input end of the gear reduction box is connected with a hand wheel; the output end of the gear reduction box is connected with a wheel disc; the outer edge of the sheave is wrapped around the rigid cord.
Preferably, the gear reduction box comprises a first gear and a second gear meshed with the first gear; the diameter of the first gear is smaller than that of the second gear; the handwheel is arranged on the gear shaft of the first gear.
Preferably, the telescopic support comprises three supports; the bottom of the bracket is provided with a fixable roller; the length range of the support is 1.1 m-1.9 m.
Preferably, the oscillating lever is hollow inside.
Preferably, the maximum attraction force of the electromagnet is 100 kg.
The invention also provides a using method of the transverse wave excitation source device, and the method comprises the following steps based on the transverse wave excitation source device:
(1) fixing the hammering member at a transverse wave excitation point;
(2) adjusting the length of the adjustable bracket so that the hammer member is hammered in a horizontal direction by the hammer when the swing lever is rotated to a vertical position;
(3) actuating the control switch to communicate the power source and the electromagnet; the vibration hammer is adsorbed to the bottom of the electromagnet;
(4) the rope retracting component is actuated, the rope retracting component drives the rigid rope to move, the rigid rope drives the guide wheel to rotate, and the swinging rod upwards rotates along an arc by taking the base as a base point;
(5) when the electromagnet is matched with the limiting hole, the control switch is actuated again, the electromagnet releases the vibration hammer, the vibration hammer and the oscillating rod rotate downwards along the circular arc, and when the oscillating rod rotates to a vertical position, the vibration hammer horizontally hammers the hammering component, so that once transverse wave vibration excitation is realized.
Compared with the prior art, the invention has the advantages that:
(1) when the device works, the electromagnet is used for generating magnetic force to provide upward movement force for the exciting hammer, the electromagnet is powered off to release the exciting hammer, and the exciting hammer strikes a steel plate fixed on the ground along the horizontal direction when in a vertical position under the action of gravity to complete transverse wave excitation. Therefore, the transverse wave excitation can be rapidly and stably realized.
(2) The exciting hammer is detachable and selectable in size, can meet seismic wave energy excitation of seismic exploration at the present stage, and can realize controllable exciting energy.
(3) The device makes things convenient for the dismouting, is convenient for the transportation, and work application scope is wide, and the limitation is little.
(4) In the process of one-time hammering, the weight of the vibration exciter is fixed, and the height of a drop point is fixed, so that the problem of uneven energy signals in the process of artificial vibration excitation can be effectively solved.
(5) The gear reduction box can reduce the working strength of manually hammering the steel plate.
Drawings
Fig. 1 is a structural diagram of a transverse wave excitation source device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the oscillating rod and the exciter hammer of FIG. 1;
fig. 3 is a top view of the limiting plate of fig. 1;
fig. 4 is a perspective view of the base plate of fig. 1.
The device comprises an electromagnet 1, an exciting vibration hammer 2, a swinging rod 3, a limiting plate 4, a rigid rope 5, a guide wheel 6, a base 7, a bottom plate 71, a hemispherical groove 710, a vertical through groove 711, a telescopic support 8, an adjusting bolt 9, a fixable roller 10, a hammering component 11, a gear reduction box 12 and a hand wheel 13.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
A shear wave excitation source apparatus comprising: telescopic bracket 8, base 7, leading wheel 6, rigid rope 5, receipts rope component, electro-magnet 1, limiting plate 4, swinging arms 3, exciting hammer 2 and hammering component 11.
In the device, a hammering component 11, a telescopic bracket 8, a base 7 and a guide wheel 6 are arranged in sequence from bottom to top; the rigid rope 5 is used for connecting the rope collecting component and the electromagnet 1; the oscillating rod 3 is used for driving the vibration exciter 2 to oscillate; the limiting plate 4 is used for limiting the swing amplitude of the swing rod 3; the electromagnet 1 absorbs or releases the vibration hammer 2 by changing the electrified state; the exciter hammer 2 is used to hammer the hammer member 11 in the horizontal direction to generate a transverse wave. The specific structure of the device is shown in figure 1:
a guide wheel 6 for changing the direction of the rigid rope 5 is rotatably arranged on the base 7; a rigid rope 5 is wound on the guide wheel 6; one end of the rigid rope 5 is connected with a rope retracting component, and the other end is connected with an electromagnet 1. Preferably, the rigid cord 5 is a steel cord.
The electromagnet 1 is connected with a direct current power supply in series; a control switch is arranged between the electromagnet 1 and the direct current power supply. The switch is controlled through manual action, so that the electromagnet 1 is electrified or powered off. The electromagnet 1 is electrified to adsorb the vibration exciter 2; the electromagnet 1 is de-energized to release the hammer 2. Wherein, the electromagnet 1 is a disc type electromagnet, and the maximum value of the suction force is 100 kg.
The swing rod 3 is used for driving the vibration hammer 2 to swing by taking the base 7 as a base point, one end of the swing rod 3 is rotatably installed on the base 7, and the other end of the swing rod is connected with the vibration hammer 2. In the present embodiment, the length of the oscillating lever 3 should satisfy: when the swing lever 3 is rotated to the vertical direction, there is a gap between the swing lever 3 and the support surface on which the hammering member 11 is placed and the swing lever 3 can hammer the hammering member 11 in the horizontal direction.
In the embodiment, the mass of the exciting hammer 2 is 5KG-75 KG; all set up corresponding screw hole on excitation hammer 2 and the swinging arms 3, pass through the bolt fastening between excitation hammer 2 and the swinging arms 3.
In the present embodiment, the oscillating rod 3 is a hollow rod, and the mass of the oscillating rod 3 is small and satisfies the strength condition for supporting the vibration exciter 2; one end of the limit plate 4 is fixed on the upper surface of the base 7 through a fastener, such as a bolt; the limiting plate 4 is horizontally arranged and is positioned above the oscillating rod 3; one section of limiting plate 4, far away from base 7, is seted up spacing hole, and the effect in spacing hole is: when the electromagnet 1 loses power, the electromagnet 1 cannot swing randomly along with the steel wire rope, the steel wire rope is guaranteed not to be separated from the guide wheel 6, and the rigid rope 5 penetrates through the limiting hole; as shown in fig. 3 and 1; the electromagnet 1 is positioned below the limit plate 4. When the rigid rope 5 drives the permanent magnet to move upwards to the position where the permanent magnet is clamped in the position limiting hole (namely when the position limiting hole is matched with the electromagnet 1), the permanent magnet is attached to the lower end face of the position limiting plate 4, the swinging rod 3 rotates to the horizontal position, and the swinging rod 3 is parallel to the position limiting plate 4.
In the embodiment, the fixed end of the limit plate 4 is flush with the end of the oscillating rod 3 connected with the base 7; the distance between the limiting hole and the base 7 is equal to the length of the swing rod 3, so that when the swing rod 3 rotates to the horizontal position, the swing rod 3 is parallel to the limiting plate 4, and the magnet is clamped in the limiting hole.
The telescopic bracket 8 is used for adjusting the height of the base 7 so that the vibration exciter 2 can hammer a hammering component 11 along the horizontal direction, and the upper end face of the telescopic bracket 8 is fixed on the bottom face of the base 7 through bolts; the hammering member 11 is located below the base 7. Preferably, the telescopic support 8 comprises three supports; the bottom of the bracket is provided with a fixable roller 10, and after the length adjusting process of the adjustable bracket is completed, the fixable roller 10 is fixed to ensure the stability of the telescopic bracket 8; the length range of the bracket is 1.1 m-1.9 m.
As shown in fig. 1, each bracket includes 2 adjusting rods and a sleeve; one end of one adjusting rod is sleeved in the other adjusting rod; the sleeve is sleeved at the overlapped part of the adjusting rods, and the two adjusting rods and the sleeve are provided with corresponding threaded holes; the sleeve is fixed on the two adjusting rods by an adjusting bolt 9. The length adjustment steps of the telescopic bracket 8 are as follows: loosening the adjusting bolt 9 arranged on the sleeve, then drawing out the adjusting rod with smaller diameter or retracting the adjusting rod with larger diameter for a section, and then screwing the adjusting bolt 9.
In the present embodiment, as shown in fig. 1, fig. 2 and fig. 4, the base 7 is preferably designed as follows: the base 7 includes a pair of bottom plates 71 disposed vertically symmetrically; the cross section of the bottom plate 71 is circular; the base plate 71 is fixedly arranged between the base plates to form the base 7. Each bottom plate 71 is provided with a vertical through groove 711 for accommodating the swing rod 3 and a hemispherical groove 710 for limiting the swing rod 3; two opposite side surfaces of the pair of bottom plates 71 are respectively provided with a hemispherical groove 710; wherein: the vertical through grooves 711 extend to the edge of the bottom plate 71; the oscillating rod 3 oscillates along the vertical through groove 711; the hemispherical groove 710 intersects with a section of the vertical through groove 711 far away from the edge, that is, the intersecting part of the hemispherical groove 710 and the vertical through groove 711 is a hollow structure, so as to ensure that the swing rod 3 smoothly swings in a range of 90 degrees (from a horizontal position to a vertical position) along the vertical through groove 711; one end of the swing lever 3 rotates in a space surrounded by the pair of hemispherical recesses 710.
In view of the above structural design of the base plate 71, the structural design of the swing lever 3 is as follows: one end of the swing lever 3 is a spherical portion which is limited in a space surrounded by the pair of hemispherical recesses 710; the rod part of the oscillating rod 3 oscillates along the vertical through groove 711; the other end of the oscillating member extends beyond the base 7 and is connected to the exciter hammer 2.
In the present embodiment, the rope retracting member includes a gear reducer 12; the input end of the gear reduction box 12 is connected with a hand wheel 13; the output end of the gear reduction box 12 is connected with a wheel disc; the outer edge of the sheave is wrapped around a rigid rope 5. The gear reduction box 12 comprises a first gear and a second gear meshed with the first gear; the diameter of the first gear is smaller than that of the second gear; the handwheel 13 is arranged on the gear shaft of the first gear, so that the labor can be saved, and the manual working strength can be reduced.
The embodiment also provides a using method of the transverse wave excitation source device, which comprises the following steps (1) - (5):
(1) fixing the steel plate at the transverse wave excitation point;
(2) the length adjustment of the adjustable support is completed by actuating the adjusting bolt 9 and the two adjusting rods, so that when the swinging rod 3 rotates to a vertical position, the vibration exciter 2 hammers the steel plate along the horizontal direction;
(3) the action control switch is used for communicating the power supply and the electromagnet 1; the electromagnet 1 is electrified, and the vibration hammer 2 is adsorbed to the bottom of the electromagnet 1;
(4) a hand wheel 13 is operated, a wheel disc at the gear reduction box 12 drives a steel wire rope to move, the steel wire rope drives the guide wheel 6 to rotate, and the swing rod 3 upwards rotates along an arc by taking the base 7 as a base point;
(5) when the electromagnet 1 is clamped in the limiting hole, the control switch is actuated again, the electromagnet 1 is powered off, the electromagnet 1 releases the vibration exciting hammer 2, the vibration exciting hammer 2 and the swinging rod 3 rotate downwards along the arc, and when the swinging rod 3 rotates to the vertical position, the vibration exciting hammer 2 horizontally hammers the steel plate along the horizontal direction. Thus, once transverse wave excitation is realized.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A transverse wave excitation source device, comprising:
the base is rotatably provided with a guide wheel; a rigid rope is wound on the guide wheel; one end of the rigid rope is connected with a rope retracting component, and the other end of the rigid rope is connected with an electromagnet; the electromagnet is connected with a power supply in series; a control switch is arranged between the electromagnet and the power supply;
the swinging rod is used for driving the vibration hammer to swing by taking the base as a base point, one end of the swinging rod is rotatably installed on the base, and the other end of the swinging rod is connected with the vibration hammer;
one end of the limiting plate is fixed on the upper surface of the base; the limiting plate is horizontally arranged and is positioned above the oscillating rod; a section of the limiting plate, which is far away from the base, is provided with a limiting hole; the rigid rope penetrates through the limiting hole; the electromagnet is positioned below the limiting plate; when the swinging rod rotates to the horizontal position, the swinging rod is parallel to the limiting plate, and the limiting hole is matched with the electromagnet;
the telescopic support is used for adjusting the height of the base so that the vibration exciter can horizontally hammer a hammering component, and the upper end of the telescopic support is fixed on the bottom surface of the base; the hammering member is located directly below the base.
2. The shear wave excitation source device of claim 1, wherein the base includes a pair of bottom plates disposed symmetrically up and down;
each bottom plate is provided with a vertical through groove for accommodating the swing rod and a hemispherical groove for limiting the swing rod; the two opposite side surfaces of the pair of bottom plates are respectively provided with the hemispherical grooves; wherein:
the vertical through groove extends to the edge of the bottom plate; the swinging rod swings along the vertical through groove;
the hemispherical groove is intersected with a section of the vertical through groove far away from the edge; one end of the swinging rod rotates in a space defined by the pair of hemispherical grooves.
3. The shear wave excitation source apparatus of claim 1, wherein said hammering member is a steel plate.
4. The shear wave excitation source device of claim 1, wherein said take-up means comprises a gear reduction box; the input end of the gear reduction box is connected with a hand wheel; the output end of the gear reduction box is connected with a wheel disc; the outer edge of the sheave is wrapped around the rigid cord.
5. The shear wave excitation source device of claim 4, wherein the gear reduction box comprises a first gear and a second gear meshed with the first gear; the diameter of the first gear is smaller than that of the second gear; the handwheel is arranged on the gear shaft of the first gear.
6. The shear wave excitation source device of claim 1, wherein said telescopic support comprises three supports; the bottom of the bracket is provided with a fixable roller; the length range of the support is 1.1 m-1.9 m.
7. The shear wave excitation source device of claim 1, wherein said oscillating rod is hollow inside.
8. The shear wave excitation source device of claim 1, wherein the maximum value of the attraction force of the electromagnet is 100 kg.
9. A method for using a shear wave excitation source device according to any one of claims 1 to 8, comprising the steps of:
(1) fixing the hammering member at a transverse wave excitation point;
(2) adjusting the length of the adjustable bracket so that the hammer member is hammered in a horizontal direction by the hammer when the swing lever is rotated to a vertical position;
(3) actuating the control switch to communicate the power source and the electromagnet; the vibration hammer is adsorbed to the bottom of the electromagnet;
(4) the rope retracting component is actuated, the rope retracting component drives the rigid rope to move, the rigid rope drives the guide wheel to rotate, and the swinging rod upwards rotates along an arc by taking the base as a base point;
(5) when the electromagnet and the limiting hole are matched, the control switch is actuated again to disconnect the power supply and the electromagnet, the electromagnet releases the vibration hammer, the vibration hammer and the swinging rod rotate downwards along the circular arc, and when the swinging rod rotates to a vertical position, the vibration hammer hammers the hammering component along the horizontal direction, so that one-time transverse wave vibration excitation is realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010564688.1A CN111694049A (en) | 2020-06-19 | 2020-06-19 | Transverse wave excitation source device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010564688.1A CN111694049A (en) | 2020-06-19 | 2020-06-19 | Transverse wave excitation source device and using method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112558143A (en) * | 2020-12-23 | 2021-03-26 | 重庆大学 | Multi-azimuth emission type portable electromagnetic impact seismic source |
| CN114137602A (en) * | 2021-10-21 | 2022-03-04 | 南京工业大学 | Transverse wave excitation source device and transverse wave excitation method |
| CN116329063A (en) * | 2021-12-24 | 2023-06-27 | 中国石油天然气集团有限公司 | Heavy hammer knocking device for generating transverse waves and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112558143A (en) * | 2020-12-23 | 2021-03-26 | 重庆大学 | Multi-azimuth emission type portable electromagnetic impact seismic source |
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| CN114137602A (en) * | 2021-10-21 | 2022-03-04 | 南京工业大学 | Transverse wave excitation source device and transverse wave excitation method |
| CN114137602B (en) * | 2021-10-21 | 2023-08-11 | 南京工业大学 | Transverse wave excitation source device and transverse wave excitation method |
| CN116329063A (en) * | 2021-12-24 | 2023-06-27 | 中国石油天然气集团有限公司 | Heavy hammer knocking device for generating transverse waves and application method thereof |
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Application publication date: 20200922 |