CN114137602B - Transverse wave excitation source device and transverse wave excitation method - Google Patents

Transverse wave excitation source device and transverse wave excitation method Download PDF

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Publication number
CN114137602B
CN114137602B CN202111227070.7A CN202111227070A CN114137602B CN 114137602 B CN114137602 B CN 114137602B CN 202111227070 A CN202111227070 A CN 202111227070A CN 114137602 B CN114137602 B CN 114137602B
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exciting
rope
rigid rope
lock catch
fixed
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CN114137602A (en
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韩轶
周正华
刘旭进
章逸
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Nanjing Tech University
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Nanjing Tech University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/02Generating seismic energy
    • G01V1/143Generating seismic energy using mechanical driving means, e.g. motor driven shaft
    • G01V1/147Generating seismic energy using mechanical driving means, e.g. motor driven shaft using impact of dropping masses
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00Details of seismic processing or analysis
    • G01V2210/10Aspects of acoustic signal generation or detection
    • G01V2210/12Signal generation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy from the sea, e.g. using wave energy or salinity gradient

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

The invention provides a transverse wave excitation source device and a transverse wave excitation method, wherein the device comprises a hammering component, an excitation hammer, a disc type electromagnet, a rigid rope, a pressing type lock catch and a rope collecting component; the exciting hammer is used for knocking the hammering member, is positioned at one side of the hammering member and can move along the X direction of a fixed frame; one side of the exciting hammer, which is opposite to the hammering component, is fixed with an exciting spring distributed along the X direction, and one end of the exciting spring, which is far away from the exciting hammer, is fixed on a disc type electromagnet; the disc type electromagnet is fixed on the fixed frame and is positioned at one side of the exciting hammer, which is opposite to the hammering component; a rigid rope is fixed on one side surface of the exciting hammer, which is opposite to the hammering component, and sequentially passes through the exciting spring, the rope hole on the disc type electromagnet and the rope hole on the fixed frame and penetrates out of the fixed frame; the rigid rope is provided with a push type lock catch for breaking the rigid rope. The invention has the advantages of fast and stable realization of transverse wave excitation, convenient operation and convenient carrying in field operation.

Description

Transverse wave excitation source device and transverse wave excitation method
Technical Field
The invention belongs to the technical field of physical exploration, and particularly relates to a transverse wave excitation source device and a transverse wave excitation method.
Background
The seismic waves are classified into longitudinal waves and transverse waves, wherein the longitudinal waves are compression waves, namely the vibration direction of protons is consistent with the propagation direction; transverse waves refer to shear waves, i.e. the direction of vibration of protons is perpendicular to the direction of wave propagation. The transverse wave velocity is an important parameter for researching the dynamic characteristics of the rock and soil mass, and has important significance for future research.
In the prior art, a common earthquake transverse wave excitation source is mainly generated by two methods of manual excitation or explosive detonator. However, the above method has the following drawbacks: 1) The manual excitation method is to manually hold a large hammer to strike a focus and a focus vehicle, but the manual hold of the large hammer to strike the focus has a series of problems of unstable energy, uncontrollable energy and the like, and is inconvenient to operate. 2) The explosive has good excitation effect, but has a plurality of limitations in urban use due to inconvenient carrying. Therefore, a new transverse wave excitation source device which can generate stable and controllable excitation energy and is convenient to carry for field operation is urgently needed in the prior art.
Disclosure of Invention
The invention aims to provide a transverse wave excitation source device and a transverse wave excitation method, and the device has the advantages of being capable of rapidly and stably realizing transverse wave excitation, convenient to operate and convenient to carry about field operation. In order to achieve the above purpose, the invention adopts the following technical scheme:
a transverse wave excitation source apparatus comprising:
a hammering member;
the exciting hammer is used for knocking the hammering member, is positioned at one side of the hammering member and can move along a fixed frame X; one side of the exciting hammer, which is opposite to the hammering member, is fixed with an exciting spring distributed along the X direction, and one end of the exciting spring, which is far away from the exciting hammer, is fixed on a disc electromagnet;
the disc electromagnet is fixed on the fixed frame and is positioned at one side of the exciting hammer, which is opposite to the hammering component; the disc type electromagnet and the fixed frame part for mounting the disc type electromagnet are provided with a rope hole; a rigid rope is fixed on one side surface of the exciting hammer, which is opposite to the hammering component, and sequentially passes through the exciting spring, a rope hole on the disc type electromagnet and a rope hole on the fixed frame and penetrates out of the fixed frame; the rigid rope is provided with a push type lock catch for breaking the rigid rope; the run-out section of the rigid cord is wound around a cord takeup member.
Preferably, the push type latch includes:
the draw hook and the shell are used for connecting two sections of the rigid rope; one end of the drag hook is fixed on one section of the rigid rope; the shell is far away from one end face of the drag hook and is fixed on the other section of the rigid rope; the shell is of a hollow structure; one end face of the shell, which is close to the draw hook, is opened for the lock catch to move in the shell;
the lock catch is used for being matched with the drag hook; the lock catch is positioned in the shell; the lock catch comprises a base, wherein the base faces one side of the drag hook and is fixed with a locking part matched with the drag hook;
a lock shaft is rotatably arranged on the base; a reset spring is fixed on the curved surface of the lock shaft, extends out of the base along the X direction from the lock hole of the base and is fixed on the end surface of the shell far away from the draw hook; the lock shaft is perpendicular to the housing; the lock shaft extends out of the base and is sleeved with a pull rod, a sliding part is arranged on the pull rod, and the sliding part can move along a sliding groove formed in the shell; the sliding chute comprises a breaking slot, a transition slot and a connecting slot which are communicated in sequence; the rigid rope is disconnected when the sliding part is positioned at the first position of the disconnection slot, and two sections of the rigid rope are connected when the sliding part is positioned at the second position of the connection slot; the first position is close to the drag hook, and the second position is far away from the drag hook; the transition groove is an inclined groove;
the locking part comprises a connecting seat, a pair of oppositely arranged clamping jaws are arranged on the connecting seat, and the clamping jaws are connected with the connecting seat through a curved surface structure; the two clamping jaws comprise a first connecting part and a second connecting part connected with the first connecting part; the first connecting part is arranged towards the open end of the shell; the distance between the two first connecting parts is larger than the distance between the two second connecting parts;
when the first connecting part is in a first position, the outer side surface of the first connecting part is in contact with the inner wall of the shell so that the locking part is in a closed state;
in the process of transition from the second position to the first position, the first connecting part of the clamping jaw moves towards the outer side of the shell, when the first connecting part of the clamping jaw moves out of the shell, the curved surface structure expands, and the locking part is converted into an expanded state from a furled state to release the drag hook.
Preferably, the cross section of the passage for installing the lock shaft is U-shaped; and a limiting part is arranged on the plane of the channel and is matched with the stop bar on the lock shaft to limit the rotating angle of the lock shaft in the channel.
Preferably, a guide post is arranged at the bottom of the shell, and the reset spring is sleeved on the guide post.
Preferably, the rope collecting member 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 wheel disc winds the rigid rope.
Preferably, two ends of the exciting hammer are respectively fixed with a guide rod, and the guide rods can move along guide grooves formed in the fixed frame.
Preferably, the disc electromagnet is fixedly arranged at the center of the fixed frame through bolts; the disc type electromagnet adopts a direct current power supply and is connected with a current regulator and a control switch.
A transverse wave excitation method based on the transverse wave excitation source device comprises the following steps:
s1, fixing the hammering component at a transverse wave excitation point;
s2, adjusting the position of the fixed frame so that the hammering component can be hammered along the X direction when the exciting hammer works;
s3, direct current is conducted to the disc type electromagnet;
s4, the rope collecting component is operated, the rope collecting component drives the rigid rope to move, the rigid rope is in a tightening state to drive the exciting hammer to move along the fixed frame, and the exciting hammer moves along with the rigid rope towards the disc type electromagnet;
in the process that the exciting hammer moves along with the rigid rope, the exciting hammer applies pressure to the exciting spring, and the exciting spring is compressed and deformed; when the exciting hammer enters the working range of the disc electromagnet, the rigid rope is in a loose state, and the exciting hammer is adsorbed at the position where the suction force of the disc electromagnet is equal to the pressure of the spring;
and S5, actuating the pressing type lock catch to disconnect the rigid rope, then disconnecting direct current supplied to the disc type electromagnet to release, and releasing the exciting hammer by the disc type electromagnet, wherein the exciting hammer moves along the X direction until striking the hammering member to realize one-time transverse wave excitation.
Compared with the prior art, the invention has the advantages that:
(1) When the device works, the electromagnet generates magnetic force to provide suction force for the exciting hammer, the electromagnet is powered off to release the exciting hammer, and the exciting hammer is enabled to strike a hammering component fixed on the ground along the X direction on the fixed frame by utilizing the elastic force of the spring, so that transverse wave excitation is completed. Therefore, transverse wave excitation can be realized rapidly and stably.
(2) The vibration hammer is detachable and has optional size, so that the vibration hammer can meet the vibration wave energy excitation of the current-stage seismic exploration, and the excitation energy can be controlled. And the weight of the exciting hammer is fixed, and the magnetic force of the disc type electromagnet is fixed, so that the problem of uneven manual exciting energy signals can be effectively solved.
(3) The invention is convenient to assemble and disassemble, convenient to transport, wide in working application range and small in limitation.
(4) When the exciting hammer just reaches the working range of the disc electromagnet, the exciting hammer is instantly absorbed by the suction force of the disc electromagnet, the rigid rope is converted into a loose state from a tight state, and finally the exciting hammer is stationary at the position where the suction force of the disc electromagnet is equal to the pressure of the spring. Then, the push type lock catch is operated to disconnect the rigid rope, then the direct current supplied to the disc type electromagnet is disconnected, and the disc type electromagnet releases the exciting hammer. Therefore, the device is matched with the disc type electromagnet through the pressing type lock catch to release the exciting hammer, and finally completes one-time transverse wave excitation. Thus, the device is convenient to operate.
Drawings
FIG. 1 is a schematic diagram of a transverse wave-excited source device according to an embodiment of the present invention;
FIG. 2 is a perspective view of the push-button latch of FIG. 1 with the drag hook removed;
FIG. 3 is a front view of the housing of FIG. 2;
FIG. 4 is a schematic view of the push-button latch of FIG. 1 with the housing removed;
FIG. 5 is a perspective view of the push-button latch of FIG. 4 with the drag hook and housing removed;
FIG. 6 is a further perspective view of FIG. 5;
FIG. 7 is a block diagram of the stop portion of FIG. 5;
FIG. 8 is a perspective view of the stop portion of FIG. 5;
FIG. 9 is a schematic diagram showing the connection relationship between the exciting spring, the rotating shaft, the pull rod and the sliding part in FIG. 5;
FIG. 10 is a view showing the structure of the rotary shaft in FIG. 9;
FIG. 11 is a schematic view of the break slot, transition slot and attachment slot of FIG. 3.
The device comprises a 1-fixed frame, a 2-vibration hammer, a 3-vibration spring, a 4-disc type electromagnet, a 5-push type lock catch, a 51-shell, a 511-break groove, a 5111-first position, a 512-transition groove, a 513-connecting groove, a 5131-second position, a 5132-third position, a 52-drag hook, a 53-lock catch, a 531-base, a 5311-limiting part, a 532-lock shaft, a 533-locking part, a 54-pull rod, a 55-reset spring, a 6-rigid rope, a 7-gear reduction box, an 8-hammering component, a 9-guide rod, a 10-hand wheel and a 11-sliding part.
Detailed Description
The present invention will be described in more detail below with reference to the drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art can modify the invention described herein while still achieving the advantageous effects of the invention. Accordingly, the following description is to be construed as broadly known to those skilled in the art and not as limiting the invention.
As shown in fig. 1, a transverse wave excitation source device includes: the device comprises a fixed frame 1, a hammering component 8, an exciting hammer 2, a disc type electromagnet 4, a rigid rope 6, a rope collecting component and a push type lock catch 5.
The fixed frame 1 is a U-shaped frame, and the frames on the two sides of the U-shaped frame are respectively provided with a transverse guide groove for the guide rod 9 on the exciting hammer 2 to keep X-direction movement; the fixed frame 1 has four abutments which are fixedly mounted on the ground by bolts in central alignment with the hammering member 8 on the ground.
The hammering member 8 is a steel plate.
The exciting hammer 2 is used for knocking the hammering member 8 and is a square iron hammer, the exciting hammer 2 is positioned on one side of the hammering member 8, the exciting hammer 2 can move along the X direction of a fixed frame 1, one side of the exciting hammer 2, which is opposite to the hammering member 8, is fixedly provided with an exciting spring 3 which is distributed along the X direction, and one end of the exciting spring 3, which is far away from the exciting hammer 2, is fixed on the disc electromagnet 4. Specifically, two ends of the exciting hammer 2 are respectively fixed with a guide rod 9, and the guide rods 9 can move along guide grooves formed on the fixed frame 1; the two ends of the guide rod 9 are provided with threads at the outer part of the guide groove, and the Y direction is restrained by tightening a bolt, so that the exciting hammer 2 is always in the center position when moving; the mass of the exciting hammer 2 is 5KG-75KG; the maximum compression elasticity of the exciting spring 3 is 1000N; steel sheets are arranged at two ends of the exciting spring 3 to fix the exciting spring 3 between the exciting hammer 2 and the disc electromagnet 4. In the present embodiment, the X direction refers to the longitudinal direction of the fixed frame 1, and the Y direction refers to the width direction of the fixed frame 1.
The disc electromagnet 4 is annular, is fixed at the central position of the fixed frame 1 through a bolt, and is positioned at one side of the exciting hammer 2, which is opposite to the hammering member 8; the disc electromagnet 4 and the fixed frame 1 for installing the disc electromagnet 4 are respectively provided with a rope hole for the rigid rope 6 to pass through. Specifically, the maximum suction force 1200N of the disc electromagnet 4 is a direct current power supply, the disc electromagnet 4 is connected with a current regulator and a control switch, and the current regulator can control the suction force of the disc electromagnet 4 by regulating current; the switch is controlled by manual action to realize the power on or power off of the disc electromagnet 4.
One end of the rigid rope 6 is fixed on one side surface of the exciting hammer 2, which is opposite to the hammering member 8, and the rigid rope 6 sequentially passes through the exciting spring 3, the rope hole on the disc electromagnet 4 and the rope hole on the fixed frame 1 and passes out of the fixed frame 1; the rigid rope 6 is provided with a push type lock catch 5 for breaking the rigid rope 6; the run-out section of the rigid cord 6 is wound around a cord takeup member.
As shown in fig. 2 to 11, the push lock 5 includes: draw hook 52, shell 51, hasp 53, pull rod 54 and reset spring 55.
A retractor 52 and a housing 51, as shown in fig. 1, for connecting two sections of the rigid rope 6; one end of the drag hook 52 is fixed on one section of the rigid rope 6; an end face of the housing 51 away from the drag hook 52 is fixed to the other section of the rigid rope 6; the housing 51 is a hollow structure; the end face of the housing 51 adjacent to the drag hook 52 is opened for the lock catch 53 to move within the housing 51.
A lock catch 53 for cooperating with the drag hook 52; the lock catch 53 is located within the housing 51; the lock catch 53 includes a base 531, and the base 531 faces to one side of the drag hook 52 to fix a locking portion 533 engaged with the drag hook 52, as shown in fig. 4 to 8.
A lock shaft 532 is rotatably mounted on the base 531 as shown in fig. 6 to 7; a return spring 55 is fixed on the curved surface of the lock shaft 532, and the return spring 55 extends out of the base 531 along the X direction from the lock hole of the base 531 and is fixed on the end surface of the housing 51 away from the draw hook 52; lock axis 532 is perpendicular to housing 51; the lock shaft 532 extends out of the base 531 and is sleeved with a pull rod 54, a sliding part 11 is arranged on the pull rod 54, and the sliding part 11 can move along a sliding groove formed on the shell 51.
The sliding groove, as shown in fig. 3 and 11, comprises a breaking groove 511, a transition groove 512 and a connecting groove 513 which are communicated in sequence; when the sliding part 11 is positioned at the first position 5111 of the breaking groove 511, the rigid rope 6 is broken, and when the sliding part 11 is positioned at the second position 5131 of the connecting groove 513, two sections of the rigid rope 6 are connected; the first position 5111 is close to the drag hook 52, and the second position 5131 is far away from the drag hook 52; the transition groove 512 is an inclined groove;
the locking portion 533, as shown in fig. 7, includes a connecting seat, on which a pair of oppositely disposed clamping jaws are disposed, and the clamping jaws are connected with the connecting seat through a curved surface structure; the two clamping jaws comprise a first connecting part and a second connecting part connected with the first connecting part; the first connection portion is provided toward the open end of the housing 51; the distance between the two first connecting parts is larger than the distance between the two second connecting parts. When in the second position 5131, the outer side surface of the first connecting portion contacts the inner wall of the housing 51 to make the locking portion 533 in the folded state; in the transition from the second position 5131 to the first position 5111, the first connection portion of the clamping jaw moves towards the outer side of the housing 51, and when the first connection portion of the clamping jaw moves out of the housing 51, the curved surface structure expands, and the locking portion 533 is changed from the retracted state to the expanded state to release the drag hook 52.
Preferably, the passage for the lock shaft 532 is U-shaped in cross section as shown in FIG. 6; a limiting part 5311 is arranged on the plane of the channel, and the limiting part 5311 is matched with a stop bar on the lock shaft 532 to limit the rotation angle of the lock shaft 532 in the channel; a guide post is provided at the bottom of the housing 51, and a return spring 55 is sleeved on the guide post as shown in fig. 3.
The rope collecting component comprises a gear reduction box 7; the input end of the gear reduction box 7 is connected with a hand wheel 10; the output end of the gear reduction box 7 is connected with a wheel disc; the outer edge of the wheel disc is wrapped around a rigid rope 6. The gear reduction box 7 includes a first gear and a second gear meshed with the first gear (an output end of the gear reduction box 7); the diameter of the first gear is smaller than that of the second gear; the hand wheel 10 is arranged on the gear shaft of the first gear, so that manpower can be saved, and the manual working strength is reduced.
The working principle of the transverse wave excitation source device is as follows:
s1, fixing the hammering member 8 at the transverse wave excitation point.
S2, adjusting the position of the fixed frame 1 so that the hammering member 8 can be hammered in the X direction when the exciting hammer 2 is operated.
And S3, an action control switch is used for communicating the power supply, the current regulator and the disc electromagnet 4, namely, the direct current is conducted to the disc electromagnet 4.
And S4, a rope collecting component is operated, the rope collecting component drives the rigid rope 6 to move, the rigid rope 6 is in a tight state to drive the vibration hammer 2 to move along the fixed frame 1, and the vibration hammer 2 moves along with the rigid rope 6 towards the disc type electromagnet 4.
In the process that the exciting hammer 2 moves along with the rigid rope 6, the exciting hammer 2 applies pressure to the exciting spring 3, and the exciting spring 3 is compressed and deformed; when the exciting hammer 2 enters the working range of the disc electromagnet 4, the exciting hammer 2 is adsorbed instantaneously, and the rigid rope 6 is switched from a tight state to a loose state, namely the rope tension acting on the exciting hammer 2 is relieved; the exciting hammer 2 is adsorbed at the position where the suction force of the disc electromagnet 4 is equal to the pressure of the spring, at the moment, the rigid rope 6 has no acting force on the exciting hammer 2, and the attraction force of the exciting hammer 2 and the disc electromagnet 4 are not contacted.
And S5, actuating the push type lock catch 5 to disconnect the rigid rope 6, then disconnecting the direct current released by the disc type electromagnet 4, releasing the exciting hammer 2 by the disc type electromagnet 4, and enabling the exciting hammer 2 to move along the X direction until striking the hammering member 8 so as to realize one-time transverse wave excitation.
In step S5, the working principle of the push-type lock catch is:
(1) When it is desired to connect two sections of rigid rope 6:
in the initial state, the jaws of the locking portion of the lock catch 53 are located outside the housing 51.
First, pressing the drag hook 52 indirectly applies force to the lock catch 53, the lock catch 53 moves downward (in the direction away from the drag hook 52 along the X direction), and simultaneously drives the sliding portion 11 on the pull rod 54 to move from the first position 5111 to the third position 5132 along the inner walls of the disconnection groove 511, the transition groove 512 and the connection groove 513 in sequence, and the return spring 55 is in a compressed state.
Then, the hand is released to release the lock catch 53, the sliding portion 11 on the pull rod 54 moves upward (in the direction of the X-direction toward the drag hook 52) along the inner wall of the connecting groove 513 from the third position 5132 under the action of the return spring 55, and finally moves from the third position 5132 to the second position 5131 and is blocked, at this time, the drag hook 52 is locked by the lock catch 53 and is in a stable state, and the return spring 55 is in a compressed state.
(2) When it is desired to disconnect two segments of rigid rope 6:
the drag hook 52 is pressed again at the second position 5131, the lock catch 53 moves downwards, that is, the sliding part 11 on the drag rod 54 moves downwards along the inner wall of the transition groove 512 (along the direction of X away from the drag hook 52), after the sliding part 11 on the drag rod 54 bypasses the bulge formed by the connection between the transition groove 512 and the breaking groove 511, the sliding part of the drag rod 54 leaves the transition groove 512, then the hand is released to release the sliding part 11 on the drag rod 54, the sliding part 11 on the drag rod 54 moves upwards along the inner wall of the breaking groove 511 (along the direction of X towards the drag hook 52) under the action of the reset spring 55, and when the sliding part 11 moves to the first position 5111 of the breaking groove 511, the drag hook 52 is separated from the lock catch 53, and the push-type lock catch 5 is broken.
In summary, in the X direction, the first position 5111, the second position 5131, the protrusion (formed by connecting the transition groove 512 and the disconnection groove 511), and the third position 5132 sequentially increase in distance from the drag hook 52 in the X direction. After releasing the lock catch 53, the sliding part 11 on the pull rod 54 reaches the second position 5131 from the third position 5132 and reaches the first position 5111 from the protrusion under the restoring force of the restoring spring 55; during the process of the first position 5111 reaching the third position 5132, the third position 5132 reaching the second position 5131, the second position 5131 reaching the protrusion, and the first position 5111 reached by the protrusion, the lock shaft 532 rotates on the base of the lock catch 53, and the pull rod 54 swings with the lock shaft 532.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art will make any equivalent substitution or modification to the technical solution and technical content disclosed in the invention without departing from the scope of the technical solution of the invention, and the technical solution of the invention is not departing from the scope of the invention.

Claims (7)

1. A transverse wave excitation source device, comprising:
a hammering member;
the exciting hammer is used for knocking the hammering member, is positioned at one side of the hammering member and can move along a fixed frame X; one side of the exciting hammer, which is opposite to the hammering member, is fixed with an exciting spring distributed along the X direction, and one end of the exciting spring, which is far away from the exciting hammer, is fixed on a disc electromagnet;
the disc electromagnet is fixed on the fixed frame and is positioned at one side of the exciting hammer, which is opposite to the hammering component; the disc type electromagnet and the fixed frame part for mounting the disc type electromagnet are provided with a rope hole; a rigid rope is fixed on one side surface of the exciting hammer, which is opposite to the hammering component, and sequentially passes through the exciting spring, a rope hole on the disc type electromagnet and a rope hole on the fixed frame and penetrates out of the fixed frame; the rigid rope is provided with a push type lock catch for breaking the rigid rope; the penetrating section of the rigid rope is wound on a rope collecting component;
the push type latch includes:
the draw hook and the shell are used for connecting two sections of the rigid rope; one end of the drag hook is fixed on one section of the rigid rope; the shell is far away from one end face of the drag hook and is fixed on the other section of the rigid rope; the shell is of a hollow structure; one end face of the shell, which is close to the draw hook, is opened for the lock catch to move in the shell;
the lock catch is used for being matched with the drag hook; the lock catch is positioned in the shell; the lock catch comprises a base, wherein the base faces one side of the drag hook and is fixed with a locking part matched with the drag hook;
a lock shaft is rotatably arranged on the base; a reset spring is fixed on the curved surface of the lock shaft, extends out of the base along the X direction from the lock hole of the base and is fixed on the end surface of the shell far away from the draw hook; the lock shaft is perpendicular to the housing; the lock shaft extends out of the base and is sleeved with a pull rod, a sliding part is arranged on the pull rod, and the sliding part can move along a sliding groove formed in the shell; the sliding chute comprises a breaking slot, a transition slot and a connecting slot which are communicated in sequence; the rigid rope is disconnected when the sliding part is positioned at the first position of the disconnection slot, and two sections of the rigid rope are connected when the sliding part is positioned at the second position of the connection slot; the first position is close to the drag hook, and the second position is far away from the drag hook; the transition groove is an inclined groove;
the locking part comprises a connecting seat, a pair of oppositely arranged clamping jaws are arranged on the connecting seat, and the clamping jaws are connected with the connecting seat through a curved surface structure; the two clamping jaws comprise a first connecting part and a second connecting part connected with the first connecting part; the first connecting part is arranged towards the open end of the shell; the distance between the two first connecting parts is larger than the distance between the two second connecting parts;
when the first connecting part is in a first position, the outer side surface of the first connecting part is in contact with the inner wall of the shell so that the locking part is in a closed state;
in the process of transition from the second position to the first position, the first connecting part of the clamping jaw moves towards the outer side of the shell, when the first connecting part of the clamping jaw moves out of the shell, the curved surface structure expands, and the locking part is converted into an expanded state from a furled state to release the drag hook.
2. The transverse wave-excited source device according to claim 1, wherein the channel for mounting the lock shaft has a U-shaped cross section; and a limiting part is arranged on the plane of the channel and is matched with the stop bar on the lock shaft to limit the rotating angle of the lock shaft in the channel.
3. The transverse wave-excited source device according to claim 1, wherein a guide post is provided at the bottom of the housing, and the return spring is sleeved on the guide post.
4. The shear wave excitation source device of claim 1, wherein the rope-receiving member 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 wheel disc winds the rigid rope.
5. The transverse wave-excited source device according to claim 1, wherein two ends of the exciting hammer are respectively fixed with a guide rod, and the guide rods can move along guide grooves formed on the fixed frame.
6. The transverse wave-excited source device according to claim 1, wherein the disc electromagnet is fixedly mounted at the center of the fixed frame by bolts; the disc type electromagnet adopts a direct current power supply and is connected with a current regulator and a control switch.
7. A transverse wave excitation method based on the transverse wave excitation source device according to any one of claims 1 to 6, comprising the steps of:
s1, fixing the hammering component at a transverse wave excitation point;
s2, adjusting the position of the fixed frame so that the hammering component can be hammered along the X direction when the exciting hammer works;
s3, direct current is conducted to the disc type electromagnet;
s4, the rope collecting component is operated, the rope collecting component drives the rigid rope to move, the rigid rope is in a tightening state to drive the exciting hammer to move along the fixed frame, and the exciting hammer moves along with the rigid rope towards the disc type electromagnet;
in the process that the exciting hammer moves along with the rigid rope, the exciting hammer applies pressure to the exciting spring, and the exciting spring is compressed and deformed; when the exciting hammer enters the working range of the disc electromagnet, the rigid rope is in a loose state, and the exciting hammer is adsorbed at the position where the suction force of the disc electromagnet is equal to the pressure of the spring;
s5, actuating the push type lock catch to disconnect the rigid rope, then disconnecting direct current supplied to the disc type electromagnet to release, wherein the disc type electromagnet releases the exciting hammer, and the exciting hammer moves along the X direction until knocking the hammering member to realize one-time transverse wave excitation;
(1) When two sections of rigid rope are required to be connected:
in the initial state, the clamping jaw of the locking part in the lock catch is positioned outside the shell;
firstly, pressing a draw hook to indirectly apply force to a lock catch, enabling the lock catch to move downwards, simultaneously driving a sliding part on a pull rod to move from a first position to a third position along the inner walls of a breaking slot, a transition slot and a connecting slot in sequence, and enabling a reset spring to be in a compressed state;
then releasing the hand to release the lock catch, and moving the sliding part on the pull rod upwards from the third position along the inner wall of the connecting groove under the action of the return spring, and finally moving from the third position to the second position and clamping, wherein the drag hook is locked by the lock catch and is in a stable state, and the return spring is in a compressed state;
(2) When two sections of rigid rope need to be disconnected:
the drag hook is pressed again at the second position, the lock catch moves downwards along the inner wall of the transition groove, when the sliding part on the drag rod bypasses the bulge formed by connection between the transition groove and the disconnection groove, the sliding part on the drag rod leaves the transition groove, then the hand is released to release the sliding part on the drag rod, the sliding part on the drag rod moves upwards along the inner wall of the disconnection groove under the action of the reset spring, and when the drag hook moves to the first position of the disconnection groove, the drag hook is separated from the lock catch, and at the moment, the push type lock catch is disconnected.
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CN114923619B (en) * 2022-04-27 2023-07-25 中北大学 Device and method for detecting tension of steel wire rope

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