CN113686954A - Exciting small hammer for detecting stress wave of anchor rod and using method thereof - Google Patents

Exciting small hammer for detecting stress wave of anchor rod and using method thereof Download PDF

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Publication number
CN113686954A
CN113686954A CN202110796065.1A CN202110796065A CN113686954A CN 113686954 A CN113686954 A CN 113686954A CN 202110796065 A CN202110796065 A CN 202110796065A CN 113686954 A CN113686954 A CN 113686954A
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China
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hammer
plate
shaft
fixed
rack
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CN202110796065.1A
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CN113686954B (en
Inventor
王玉杰
陈鸿杰
赵宇飞
迟福东
尹韬
曹学兴
孙兴松
张强
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China Institute of Water Resources and Hydropower Research
Huaneng Group Technology Innovation Center Co Ltd
Huaneng Lancang River Hydropower Co Ltd
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China Institute of Water Resources and Hydropower Research
Huaneng Group Technology Innovation Center Co Ltd
Huaneng Lancang River Hydropower Co Ltd
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Publication of CN113686954A publication Critical patent/CN113686954A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04Analysing solids
    • G01N29/045Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/023Solids

Abstract

The invention belongs to the technical field of nondestructive testing, and discloses an excitation hammer for anchor rod stress wave detection, which comprises a hammer handle, wherein a hammer head is fixedly mounted at the top end of the hammer handle, a fixed assembly is arranged at the right end of the hammer head, a movable plate is movably connected to the middle of the fixed assembly, an impact block is fixedly mounted on the left side surface of the movable plate, a supporting seat is fixedly mounted at the bottom end of the right side surface of the movable plate, and a rotating shaft is movably connected to the top of the rear end of the supporting seat. According to the invention, the top end of the rack is meshed with the bottom end of the gear ring, when the right end of the pressure lever is continuously and slowly pressed, the gear ring drives the fixed shaft to continuously rotate for three circles, and after the compression spring is compressed to the limit, the elasticity of the compression spring can drive the magnetic block to be separated from the attaching plate, so that the rack moves leftwards, and therefore, the fixed shaft can drive the impact block and the hammer head to knock for six times through the connecting rod by pressing the pressure lever once, and the labor intensity of operators is greatly reduced.

Description

Exciting small hammer for detecting stress wave of anchor rod and using method thereof
Technical Field
The invention belongs to the technical field of nondestructive testing, and particularly relates to an excitation hammer for anchor rod stress wave testing.
Background
The anchor rod is used as an effective and simple anchoring measure to be widely applied to projects such as slope and cavern stability, the stress state, the anchor rod length and the grouting compactness of the anchor rod are very concerned in the project field, at present, the anchor rod nondestructive detector based on the stress wave detection principle is an effective detection measure, the conventional anchor rod nondestructive detector mainly comprises a host, a stress wave receiver and an excitation hammer, the using steps are that the stress wave receiver is adsorbed on the end face of the anchor rod after the instrument is connected and started, and then the excitation hammer is used for knocking the end face of the anchor rod to provide excitation, so that the test is completed.
When the existing small exciting hammer is used, the end face of the anchor rod is usually knocked in a knocking mode, when the hammer is knocked, in order to lighten the force storage process of a user, the press type structure is usually adopted to drive the press block to impact the hammer head, but when the existing press type structure is used, the effect of one-time impact on the hammer head can only be achieved by one-time pressing, but when the hammer is detected, the hammer is usually required to knock the anchor rod for many times, therefore, when the hammer is used, an operator is required to perform reciprocating pressing for many times, and the labor intensity of the operator is increased.
When using, the structure that adopts the push type mostly provides the excitation, but when pressing, the strike of once can only be accomplished mostly to current excitation sledgehammer, when carrying out the multiple knock detection to the stock, need press repeatedly and realize multiple knock, nevertheless when pressing, operating personnel often can not control the contact position of tup and stock terminal surface and be in same some, when repeated strike, lead to the strike the placement at every turn different, the precision that the device detected has been reduced.
When the conventional small exciting hammer is used for detecting the anchor rod, the cross section area of the anchor rod is small, so that the stress wave receiver can be damaged when the conventional small exciting hammer is used for knocking the end surface of the anchor rod, and the service life of the device is shortened.
Disclosure of Invention
The invention aims to provide an excitation hammer for detecting the stress wave of an anchor rod, so as to solve the problems in the background technology.
In order to achieve the above purpose, the invention provides the following technical scheme: an excitation hammer for detecting stress waves of an anchor rod comprises a hammer handle, wherein a hammer head is fixedly installed at the top end of the hammer handle, a fixed assembly is arranged at the right end of the hammer head, a movable plate is movably connected to the middle of the fixed assembly, an impact block is fixedly installed on the left side face of the movable plate, a supporting seat is fixedly installed at the bottom end of the right side face of the movable plate, a rotating shaft is movably connected to the top of the rear end of the supporting seat, a rotating plate is fixedly installed at the front end of the rotating shaft, a gear ring is fixedly installed in the middle of the rotating shaft, a fixed shaft is fixedly installed at the right end of the front side face of the rotating plate, a connecting shaft seat is fixedly installed on the right side face of the movable plate, a connecting rod is movably connected to the surfaces of the connecting shaft seat and the fixed shaft, and when the fixed shaft rotates upwards, the length of the connecting rod is fixed, so that the connecting shaft seat can be driven to move leftwards for a certain distance, when the fixed shaft rotates upwards by one hundred eighty degrees, the connecting rod is in a horizontal state, the connecting shaft seat moves to the leftmost side at the moment, the connecting shaft seat drives the moving plate and the impact block to move to the leftmost side, the impact block penetrates through the inner cavity of the fixed plate and is in contact with the right end of the hammer head, so that the hammer head is impacted to generate excitation, the rack is arranged on the rear side of the rotating plate, the penetrating shaft is fixedly mounted at the right end of the rack, and the magnetic block is fixedly mounted on the right side face of the penetrating shaft.
Preferably, a pressing component is fixedly mounted on the right side of the hammer handle, a reset spring is fixedly mounted on the right side face of the hammer handle, a fixed block is fixedly mounted at the top end of the pressing component, an attaching plate is fixedly mounted on the left side face of the fixed block, a fixed box is fixedly mounted at the right end of the supporting seat, a compression spring is fixedly mounted on the right side face of an inner cavity of the fixed box, the elasticity of the compression spring drives a penetrating shaft to move leftwards so as to drive a rack to move leftwards, the rack can drive a rotating plate to rotate clockwise, a connecting rod can drive an impact block to move leftwards again for three times, the purpose that the right end of the hammer head is continuously knocked by pressing a pressing rod is achieved, the pressing rod is loosened, the bottom end of the pressing rod is driven to rotate rightwards by the elasticity of the reset spring at the moment, the top end of the pressing rod is rotated leftwards, the attaching plate is driven by the fixed block to attach to the magnetic block again, waiting for next detection, thereby realizing that the device does not need to be manually reset by operators and reducing the labor intensity of the operators.
Preferably, the tup is because cylinder and circular cone constitute, the diameter value of tup cylinder end equals the diameter value of tup cone end, the circular cone end fixed mounting of tup is in the left side of tup cylinder end, when using, at first with the left end of tup and the terminal surface contact of stock, because the left end of tup sets up to coniform, when tup and stock terminal surface contact, can make the tup be the point contact with the terminal surface of stock, its drop point can stably fall in the terminal surface department of stock when knocking, avoided when knocking, pounding the condition of stress wave receiver, avoid detection device to damage, increased the life of device.
Preferably, the fixing component comprises a clamping block, the clamping block is arranged on the right side of the top end of the hammer handle, a fixing plate is fixedly arranged on the right side surface of the clamping block, the four corners of the right side surface of the fixed plate are all fixedly provided with positioning shafts, the right end of each positioning shaft is fixedly provided with a limit plate, the bottom end of the fixed plate is movably connected with a countersunk bolt, the left end of the countersunk bolt sequentially penetrates through the fixed plate, the clamping block and the right end of the hammer handle, the left end of the countersunk head bolt is engaged with the top of the right end of the hammer handle, the moving plate is movably connected on the surface of the positioning shaft, the positioning shaft positions and guides the movement of the moving plate, thereby ensuring the stability of the moving plate during movement, fixing the clamping block and the fixed plate on the right side of the hammer handle through the countersunk head bolt, can separate hammer handle and fixed subassembly through dismantling countersunk bolt, conveniently maintain and deposit the device.
Preferably, the pressing component includes the hanger plate, hanger plate fixed mounting is at the right flank of hammer handle, the right-hand member swing joint of hanger plate has the fixed pin, the surperficial swing joint of fixed pin has the depression bar, fixed block fixed mounting is on the top of depression bar, reset spring's right-hand member fixed mounting presses the depression bar to the direction of hammer handle on the left surface of depression bar bottom, and the fixed pin moves the axle center as the depression bar as the rotation of depression bar when the depression bar moves left, can realize that the top that makes the depression bar drives fixed block and rigging board and move right, when the rigging board moves right, can drive and drive the magnetic block through the magnetic force between magnetic block and the rigging board and move right.
Preferably, the top end of the rack is meshed with the bottom end of the gear ring, a T-shaped sliding groove is formed in the bottom end of the rack, a T-shaped sliding rail is fixedly mounted on the front side face of the rear end of the supporting seat, the T-shaped sliding rail fixedly mounted on the front side face of the rear end of the supporting seat is movably connected in the T-shaped sliding groove formed in the bottom end of the rack, the T-shaped sliding rail can position and guide the movement of the rack, the stability of the rack in movement is guaranteed, when the magnetic block moves rightwards, the rack can be driven to move rightwards through the penetrating shaft, and the gear ring can be meshed with the top end of the rack to drive the rotating shaft to rotate, so that the rotating plate rotates anticlockwise, and the rotating plate can drive the fixed shaft fixedly mounted on the front side face of the rotating plate to rotate anticlockwise.
Preferably, run through axle swing joint in the inner chamber of fixed box, the left end of running through the axle comprises the cylinder board, the right-hand member of running through the axle comprises the cylinder axle, the magnetism piece is located the right side of fixed box, the cross sectional shape of magnetism piece is circular, runs through the axle and connects rack and magnetism piece, and when running through the axle motion, fixed box can support the motion of running through the axle to the stability of running through the axle motion has been guaranteed.
Preferably, the cross sectional shape of attaching plate is arc, the centre of a circle of attaching plate and the centre of a circle of magnetic block are in the same point, the left surface of attaching plate and the right flank laminating of magnetic block, through the arc contact between attaching plate and the magnetic block, the increase attaching plate of very big degree meets with the contact surface of magnetic block, when attaching plate rotates right, can slide downwards in the surface of magnetic block to make the magnetism between attaching plate and the magnetic block be connected closely stably more.
Preferably, compression spring activity cup joints on the surface that runs through axle cylinder axle head, compression spring's left end fixed mounting is in the right flank that runs through axle cylinder board end, after compression spring compressed extreme position, and the laminating board drives the power that the magnetic block moved right through magnetic force and is less than compression spring elastic drive and applies the power on running through axle cylinder board, and compression spring's elasticity can drive and run through the axle and remove left this moment.
Preferably, the method comprises the following steps:
when the hammer is used, the left end of the hammer head is firstly contacted with the end face of the anchor rod, then the press rod is pressed towards the hammer handle, the top end of the press rod drives the fixed block and the attachment plate to move rightwards, and when the attachment plate moves rightwards, the magnetic block is driven to move rightwards through the magnetic force between the magnetic block and the attachment plate;
when the magnetic block moves rightwards, the through shaft can drive the rack to move rightwards, and the gear ring can drive the rotating shaft to rotate through the meshing of the top end of the rack and the gear ring, so that the rotating plate rotates anticlockwise, and the rotating plate can drive the fixed shaft fixedly arranged on the front side surface of the rotating plate to rotate anticlockwise when rotating;
when the fixed shaft rotates upwards, the connecting shaft seat can be driven to move leftwards for a certain distance because the length of the connecting rod is fixed, and after the fixed shaft rotates upwards for one hundred eighty degrees, the connecting rod is in a horizontal state, the connecting shaft seat moves to the leftmost side, so that the connecting shaft seat drives the moving plate and the impact block to move to the leftmost side, and the impact block passes through the inner cavity of the fixed plate and contacts with the right end of the hammer head, so that the hammer head is impacted to generate excitation, the excitation is transmitted to the end surface of the anchor rod through the hammer head, and the anchor rod is excited;
when the fixed shaft rotates to the leftmost side, the rack still moves rightwards, so that the rotating plate can drive the fixed shaft to rotate downwards, the fixed shaft drives the connecting rod to move rightwards, the connecting rod pulls the moving plate rightwards through the connecting shaft seat at the moment, the impact block leaves the right side surface of the hammer head, and when the fixed shaft rotates to the rightmost side, the rack still moves rightwards;
when the fixed shaft rotates for a circle, the rack continues to move rightwards, the fixed shaft rotates for a second circle, so that the impact block is driven to knock the hammer for the second time, and when the fixed shaft rotates for three circles, the penetrating shaft compresses the compression spring to the maximum value;
after the compression spring is compressed to the limit position, the force of the binding plate driving the magnetic block to move rightwards through magnetic force is smaller than the force applied to the through shaft cylindrical plate driven by the compression spring to elastically move, the bottom end of the compression rod is in contact with the right side face of the hammer handle, at the moment, the elasticity of the compression spring drives the through shaft to move leftwards, so that the rack is driven to move leftwards, the rack can drive the rotating plate to rotate clockwise, the connecting rod can drive the impact block to move leftwards for three times again, and the continuous knocking on the right end of the hammer head can be realized by pressing the compression rod once;
after the hammer strikes the excitation for six times to the terminal surface of stock, loosen the depression bar, reset spring's elasticity can drive the bottom of depression bar and rotate right this moment, makes the top of depression bar rotatory left, drives the flitch and laminates with the magnetic block once more through the fixed block, waits to detect next time.
The invention has the following beneficial effects:
1. according to the invention, the top end of the rack is meshed with the bottom end of the gear ring, when the right end of the pressure lever is continuously and slowly pressed, the gear ring drives the fixed shaft to continuously rotate for three circles, and after the compression spring is compressed to the limit, the elasticity of the compression spring can drive the magnetic block to be separated from the attaching plate, so that the rack moves leftwards, and therefore, the fixed shaft can drive the impact block and the hammer head to knock for six times through the connecting rod by pressing the pressure lever once, and the labor intensity of operators is greatly reduced.
2. According to the invention, when the impact block impacts the hammer for six times, an operator only presses the bottom end of the pressure rod, and the left end of the hammer is convenient to control by the operator during multiple times of knocking, so that the contact position of the hammer and the end surface of the anchor rod cannot be changed when the left end of the hammer strikes the end surface of the anchor rod for six times, and thus, the excitation can act on the same point when the anchor rod is knocked, and the detection accuracy of the device is greatly improved.
3. According to the invention, the left end of the hammer head is set to be conical, so that the hammer head can be in point contact with the end surface of the anchor rod when the hammer head is in contact with the end surface of the anchor rod, and the hammer head does not need to be separated from the end surface of the anchor rod when the hammer head is knocked, so that the falling point can stably fall on the end surface of the anchor rod when the end surface of the anchor rod is knocked, the condition that a stress wave receiver is knocked when the end surface of the anchor rod is knocked is avoided, the damage of a detection device is avoided, and the service life of the device is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the explosive connection structure of the hammer handle according to the present invention;
FIG. 3 is a schematic view of the explosion-proof connection structure of the return spring of the present invention;
FIG. 4 is a schematic view of a fixing member connecting structure according to the present invention;
FIG. 5 is a schematic view of a rack bar connection structure according to the present invention;
FIG. 6 is a schematic cross-sectional view of the fastening box of the present invention;
FIG. 7 is a schematic view of an explosive connecting structure of a connecting rod according to the present invention;
FIG. 8 is a schematic view of a compression spring connection according to the present invention;
FIG. 9 is an enlarged view of the structure at A in FIG. 5 according to the present invention;
FIG. 10 is a schematic view of the structure of the moving direction of the moving plate driven by the rotating plate of the present invention;
FIG. 11 is a schematic view of the moving direction of the movable plate when the compression spring is compressed to push the rotating plate to rotate reversely according to the present invention.
In the figure: 1. a hammer handle; 2. a hammer head; 3. a fixing assembly; 301. a clamping block; 302. a fixing plate; 303. positioning the shaft; 304. a limiting plate; 305. a countersunk bolt; 4. moving the plate; 5. an impact block; 6. a support base; 7. a rotating shaft; 8. a rotating plate; 9. a ring gear; 10. a fixed shaft; 11. connecting the shaft seat; 12. a connecting rod; 13. a rack; 14. penetrating the shaft; 15. a magnetic block; 16. a pressing assembly; 161. a hanger plate; 162. a fixing pin; 163. a pressure lever; 17. a return spring; 18. a fixed block; 19. attaching a plate; 20. a fixing box; 21. compressing the spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 11, in an embodiment of the present invention, an excitation hammer for detecting stress waves of an anchor rod includes a hammer handle 1, a hammer head 2 is fixedly mounted at a top end of the hammer handle 1, a fixing assembly 3 is disposed at a right end of the hammer head 2, a moving plate 4 is movably connected to a middle portion of the fixing assembly 3, an impact block 5 is fixedly mounted on a left side surface of the moving plate 4, a supporting base 6 is fixedly mounted at a bottom end of a right side surface of the moving plate 4, a rotating shaft 7 is movably connected to a top portion of a rear end of the supporting base 6, a rotating plate 8 is fixedly mounted at a front end of the rotating shaft 7, a gear ring 9 is fixedly mounted at a middle portion of the rotating shaft 7, a fixing shaft 10 is fixedly mounted at a right end of the front side surface of the rotating plate 8, a connecting shaft base 11 is fixedly mounted on a right side surface of the moving plate 4, a connecting rod 12 is movably connected to a surface of the connecting shaft base 11 and the fixing shaft 10, and when the fixing shaft 10 rotates upward, because the length of the connecting rod 12 is fixed, can drive and connect axle bed 11 certain distance of left motion, after fixed axle 10 upwards rotates one hundred eighty degrees, connecting rod 12 is in the horizontality, connect axle bed 11 this moment and move to the leftmost side, make and connect axle bed 11 and drive movable plate 4 and striking block 5 and move to the leftmost side, striking block 5 passes in the inner chamber of fixed plate 302 and contacts with the right-hand member of tup 2 this moment, thereby the realization strikes production excitation to tup 2, the rear side of rotor plate 8 is equipped with rack 13, the right-hand member fixed mounting of rack 13 has through axle 14, the right flank fixed mounting who passes through axle 14 has magnetic block 15.
Wherein, the right side of the hammer handle 1 is fixedly provided with a pressing component 16, the right side of the hammer handle 1 is fixedly provided with a return spring 17, the top end of the pressing component 16 is fixedly provided with a fixed block 18, the left side of the fixed block 18 is fixedly provided with an attaching plate 19, the right end of the support base 6 is fixedly provided with a fixed box 20, the right side of the inner cavity of the fixed box 20 is fixedly provided with a compression spring 21, the elasticity of the compression spring 21 can drive a penetrating shaft 14 to move leftwards so as to drive a rack 13 to move leftwards, the rack 13 can drive a rotating plate 8 to rotate clockwise, so that a connecting rod 12 can drive an impact block 5 to move leftwards again for three times, thereby realizing that the right end of the hammer head 2 is continuously knocked by pressing a pressing one-time pressure lever 163, and loosening the pressure lever 163, the elasticity of the return spring 17 can drive the bottom end of the pressure lever 163 to rotate rightwards so as to rotate the top end of the pressure lever 163 leftwards, the attaching plate 19 is driven by the fixed block 18 to attach to the magnetic block 15 again, waiting for next detection, thereby realizing that the device does not need to be manually reset by operators and reducing the labor intensity of the operators.
Wherein, tup 2 is because cylinder and circular cone are constituteed, the diameter value of 2 cylinder ends of tup equals the diameter value of 2 cone ends of tup, the left side of 2 cylinder ends of tup is fixed to the circular cone end of tup 2, when using, at first with the left end of tup 2 and the end face contact of stock, because the left end of tup 2 sets up to coniform, when tup 2 and stock end face contact, can make the tup 2 be the point contact with the terminal surface of stock, its drop point can stably fall the terminal surface department at the stock when strikeing, avoided when strikeing, pounding the condition of stress wave receiver, avoid detection device to damage, the life of device has been increased.
Wherein, the fixed assembly 3 comprises a clamping block 301, the clamping block 301 is arranged at the right side of the top end of the hammer handle 1, a fixed plate 302 is fixedly arranged on the right side surface of the clamping block 301, positioning shafts 303 are fixedly arranged at the four corners of the right side surface of the fixed plate 302, a limiting plate 304 is fixedly arranged at the right end of the positioning shaft 303, a countersunk head bolt 305 is movably connected to the bottom end of the fixed plate 302, the left end of the countersunk head bolt 305 sequentially penetrates through the fixed plate 302, the clamping block 301 and the right end of the hammer handle 1, the left end of the countersunk head bolt 305 is engaged with the top of the right end of the hammer handle 1, the movable plate 4 is movably connected to the surface of the positioning shaft 303, the positioning shaft 303 positions and guides the movement of the movable plate 4, thereby ensuring the stability of the movable plate 4 in movement, the clamping block 301 and the fixed plate 302 are fixed at the right side of the hammer handle 1 through the countersunk head bolt 305, the hammer handle 1 can be separated from the fixed assembly 3 by disassembling the countersunk head bolt 305, the device is convenient to maintain and store.
The pressing component 16 includes a hanging plate 161, the hanging plate 161 is fixedly mounted on the right side surface of the hammer handle 1, the right end of the hanging plate 161 is movably connected with a fixing pin 162, the surface of the fixing pin 162 is movably connected with a pressing rod 163, the fixing block 18 is fixedly mounted on the top end of the pressing rod 163, the right end of the return spring 17 is fixedly mounted on the left side surface of the bottom end of the pressing rod 163, the pressing rod 163 is pressed towards the hammer handle 1, the fixing pin 162 serves as the axis of rotation of the pressing rod 163 when the pressing rod 163 moves towards the left, the top end of the pressing rod 163 can drive the fixing block 18 and the attachment plate 19 to move towards the right, and when the attachment plate 19 moves towards the right, the magnetic force between the magnetic block 15 and the attachment plate 19 can be driven to drive the magnetic block 15 to move towards the right.
Wherein, the top of rack 13 and the bottom meshing of ring gear 9, "T" shape spout has been seted up to the bottom of rack 13, the leading flank fixed mounting of support seat 6 rear end has "T" shape slide rail, support seat 6 rear end leading flank fixed mounting's "T" shape slide rail swing joint in the "T" shape spout of seting up in rack 13 bottom, "T" shape slide rail can fix a position and lead to the motion of rack 13, stability when having guaranteed the motion of rack 13, when magnetic block 15 moves to the right, can drive rack 13 and move to the right through penetrating shaft 14, through the meshing of the top of rack 13 and ring gear 9, it is rotatory to realize that ring gear 9 drives rotation axis 7, make rotor plate 8 carry out anticlockwise rotation, rotor plate 8 can drive fixed mounting at the fixed axle 10 anticlockwise rotation of rotor plate 8 leading flank when rotatory.
Wherein, run through 14 swing joint of axle in the inner chamber of fixed box 20, the left end that runs through axle 14 comprises the cylinder board, the right-hand member that runs through axle 14 comprises the cylinder axle, magnetic block 15 is located the right side of fixed box 20, the cross sectional shape of magnetic block 15 is circular, run through axle 14 and connect rack 13 and magnetic block 15, when running through axle 14 motion, fixed box 20 can support the motion that runs through axle 14 to the stability of running through axle 14 motion has been guaranteed.
Wherein, the cross sectional shape of attaching plate 19 is arc, the centre of a circle of attaching plate 19 is in the same point with the centre of a circle of magnetic block 15, the left surface of attaching plate 19 and the right flank laminating of magnetic block 15, through the arc contact between attaching plate 19 and the magnetic block 15, the contact surface of increase attaching plate 19 and magnetic block 15 of very big degree connects, when attaching plate 19 rotates right, can slide downwards in the surface of magnetic block 15, thereby make the magnetic connection between attaching plate 19 and the magnetic block 15 inseparable stable more.
Wherein, compression spring 21 activity cup joints the surface at the 14 cylinder axle heads of through axle, and compression spring 21's left end fixed mounting is in the right flank of the 14 cylinder board end of through axle, and after compression spring 21 compressed extreme position, the power that laminating board 19 drove 15 right movements through magnetic force is less than the power that compression spring 21 elasticity drove and applys on the 14 cylinder board of through axle, and compression spring 21's elasticity can drive through axle 14 and remove left this moment.
The method comprises the following steps:
when the hammer is used, the left end of the hammer head 2 is firstly contacted with the end face of the anchor rod, then the pressing rod 163 is pressed towards the hammer handle 1, the top end of the pressing rod 163 drives the fixing block 18 and the attachment plate 19 to move rightwards, and when the attachment plate 19 moves rightwards, the magnetic block 15 can be driven to move rightwards through the magnetic force between the magnetic block 15 and the attachment plate 19;
when the magnetic block 15 moves rightwards, the through shaft 14 can drive the rack 13 to move rightwards, and the gear ring 9 can drive the rotating shaft 7 to rotate through the meshing of the top end of the rack 13 and the gear ring 9, so that the rotating plate 8 rotates anticlockwise, and the rotating plate 8 can drive the fixed shaft 10 fixedly arranged on the front side surface of the rotating plate 8 to rotate anticlockwise when rotating;
when the fixed shaft 10 rotates upwards, the length of the connecting rod 12 is fixed, the connecting shaft seat 11 can be driven to move a certain distance leftwards, after the fixed shaft 10 rotates upwards by one hundred eighty degrees, the connecting rod 12 is in a horizontal state, the connecting shaft seat 11 moves to the leftmost side, the connecting shaft seat 11 drives the moving plate 4 and the impact block 5 to move to the leftmost side, and the impact block 5 penetrates through the inner cavity of the fixed plate 302 and is in contact with the right end of the hammer head 2, so that the hammer head 2 is impacted to generate excitation, the excitation is transmitted to the end face of the anchor rod through the hammer head 2, and the anchor rod is excited;
when the fixed shaft 10 rotates to the leftmost side, the rack 13 still moves rightwards, so that the rotating plate 8 can drive the fixed shaft 10 to rotate downwards, the fixed shaft 10 drives the connecting rod 12 to move rightwards, the connecting rod 12 pulls the moving plate 4 rightwards through the connecting shaft seat 11, the impact block 5 leaves the right side surface of the hammer head 2, and when the fixed shaft 10 rotates to the rightmost side, the rack 13 still moves rightwards;
after the fixed shaft 10 rotates for a circle, the rack 13 continues to move rightwards, at the moment, the fixed shaft 10 rotates for a second circle, so that the impact block 5 is driven to knock the hammer 2 for the second time, and after the fixed shaft 10 rotates for three circles, the compression of the compression spring 21 by the penetrating shaft 14 reaches the maximum value;
after the compression spring 21 is compressed to the limit position, the force of the attachment plate 19 driving the magnetic block 15 to move rightwards through magnetic force is smaller than the force applied to the cylindrical plate of the through shaft 14 by the elastic driving of the compression spring 21, the bottom end of the compression rod 163 is in contact with the right side face of the hammer handle 1, at the moment, the elasticity of the compression spring 21 drives the through shaft 14 to move leftwards, so that the rack 13 is driven to move leftwards, the rack 13 can drive the rotating plate 8 to rotate clockwise, the connecting rod 12 can drive the impact block 5 to move leftwards again for three times, and the purpose that the right end of the hammer head 2 is continuously knocked by pressing the compression rod 163 once is achieved;
after the hammer 2 strikes and stimulates the end face of the anchor rod for six times, the pressing rod 163 is loosened, the bottom end of the pressing rod 163 is driven to rotate rightwards by the elasticity of the reset spring 17, the top end of the pressing rod 163 rotates leftwards, the attaching plate 19 is driven to be attached to the magnetic block 15 again through the fixing block 18, and the next detection is waited.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. An excitation hammer for detecting stress waves of an anchor rod comprises a hammer handle (1) and is characterized in that: the hammer comprises a hammer handle (1), a hammer head (2) is fixedly mounted at the top end of the hammer handle (1), a fixed assembly (3) is arranged at the right end of the hammer head (2), a movable plate (4) is movably connected to the middle of the fixed assembly (3), an impact block (5) is fixedly mounted on the left side face of the movable plate (4), a supporting seat (6) is fixedly mounted at the bottom end of the right side face of the movable plate (4), a rotating shaft (7) is movably connected to the top of the rear end of the supporting seat (6), a rotating plate (8) is fixedly mounted at the front end of the rotating shaft (7), a gear ring (9) is fixedly mounted in the middle of the rotating shaft (7), a fixed shaft (10) is fixedly mounted at the right end of the front side face of the rotating plate (8), a connecting shaft seat (11) is fixedly mounted on the right side face of the movable plate (4), and a connecting rod (12) is movably connected to the surface connecting shaft seat (11) and the fixed shaft (10), the rear side of the rotating plate (8) is provided with a rack (13), the right end of the rack (13) is fixedly provided with a through shaft (14), and the right side surface of the through shaft (14) is fixedly provided with a magnetic block (15).
2. An excited hammer for bolt stress wave detection as claimed in claim 1, wherein: the right side fixed mounting of hammer handle (1) has pressing component (16), the right flank fixed mounting of hammer handle (1) has reset spring (17), the top fixed mounting who presses component (16) has fixed block (18), the left surface fixed mounting of fixed block (18) has rigging board (19), the right-hand member fixed mounting of support seat (6) has fixed box (20), the right flank fixed mounting of fixed box (20) inner chamber has compression spring (21).
3. An excited hammer for bolt stress wave detection as claimed in claim 1, wherein: the hammer head (2) is composed of a cylinder and a cone, the diameter value of the cylinder end of the hammer head (2) is equal to that of the cone end of the hammer head (2), and the cone end of the hammer head (2) is fixedly installed on the left side of the cylinder end of the hammer head (2).
4. An excited hammer for bolt stress wave detection as claimed in claim 1, wherein: fixed subassembly (3) include clamp splice (301), clamp splice (301) set up the right side on hammer handle (1) top, the right flank fixed mounting of clamp splice (301) has fixed plate (302), the equal fixed mounting in four corners department of fixed plate (302) right flank has location axle (303), the right-hand member fixed mounting of location axle (303) has limiting plate (304), the bottom swing joint of fixed plate (302) has countersunk head bolt (305), the left end of countersunk head bolt (305) runs through the right-hand member of fixed plate (302), clamp splice (301) and hammer handle (1) in proper order, the left end meshing of countersunk head bolt (305) is at the top of hammer handle (1) right-hand member, movable plate (4) swing joint is on the surface of location axle (303).
5. An excited hammer for bolt stress wave detection as claimed in claim 2, wherein: the pressing assembly (16) comprises a hanging plate (161), the hanging plate (161) is fixedly installed on the right side face of the hammer handle (1), the right end of the hanging plate (161) is movably connected with a fixing pin (162), the surface of the fixing pin (162) is movably connected with a pressing rod (163), the fixing block (18) is fixedly installed on the top end of the pressing rod (163), and the right end of the reset spring (17) is fixedly installed on the left side face of the bottom end of the pressing rod (163).
6. An excited hammer for bolt stress wave detection as claimed in claim 1, wherein: the top end of the rack (13) is meshed with the bottom end of the gear ring (9), a T-shaped sliding groove is formed in the bottom end of the rack (13), a T-shaped sliding rail is fixedly mounted on the front side face of the rear end of the supporting seat (6), and the T-shaped sliding rail fixedly mounted on the front side face of the rear end of the supporting seat (6) is movably connected into the T-shaped sliding groove formed in the bottom end of the rack (13).
7. An excited hammer for bolt stress wave detection as claimed in claim 1, wherein: the magnetic block is characterized in that the penetrating shaft (14) is movably connected in an inner cavity of the fixed box (20), the left end of the penetrating shaft (14) is composed of a cylindrical plate, the right end of the penetrating shaft (14) is composed of a cylindrical shaft, the magnetic block (15) is located on the right side of the fixed box (20), and the cross section of the magnetic block (15) is circular.
8. An excited hammer for bolt stress wave detection as claimed in claim 2, wherein: the cross section of the attaching plate (19) is arc-shaped, the circle center of the attaching plate (19) is located at the same point as the circle center of the magnetic block (15), and the left side surface of the attaching plate (19) is attached to the right side surface of the magnetic block (15).
9. An excited hammer for bolt stress wave detection as claimed in claim 2, wherein: the compression spring (21) is movably sleeved on the surface of the cylindrical shaft end of the through shaft (14), and the left end of the compression spring (21) is fixedly installed on the right side face of the cylindrical plate end of the through shaft (14).
10. A method of use of an excited hammer for bolt stress wave detection as claimed in any one of claims 1 to 9, wherein: the method comprises the following steps:
when the hammer is used, the left end of the hammer head (2) is firstly contacted with the end face of the anchor rod, then the pressure lever (163) is pressed towards the hammer handle (1), so that the top end of the pressure lever (163) drives the fixing block (18) and the attachment plate (19) to move rightwards, and when the attachment plate (19) moves rightwards, the magnetic block (15) can be driven to move rightwards through the magnetic force between the magnetic block (15) and the attachment plate (19);
when the magnetic block (15) moves rightwards, the through shaft (14) can drive the rack (13) to move rightwards, the gear ring (9) can drive the rotating shaft (7) to rotate through the meshing of the top end of the rack (13) and the gear ring (9), so that the rotating plate (8) rotates anticlockwise, and the rotating plate (8) can drive the fixed shaft (10) fixedly arranged on the front side surface of the rotating plate (8) to rotate anticlockwise;
when the fixed shaft (10) rotates upwards, the length of the connecting rod (12) is fixed, the connecting shaft seat (11) can be driven to move leftwards for a certain distance, after the fixed shaft (10) rotates upwards for one hundred eighty degrees, the connecting rod (12) is in a horizontal state, the connecting shaft seat (11) moves to the leftmost side, the connecting shaft seat (11) drives the moving plate (4) and the impact block (5) to move to the leftmost side, and the impact block (5) penetrates through the inner cavity of the fixed plate (302) and is in contact with the right end of the hammer head (2), so that the hammer head (2) is impacted to generate excitation, the excitation is transmitted to the end face of the anchor rod through the hammer head (2), and the anchor rod is excited;
when the fixed shaft (10) rotates to the leftmost side, the rack (13) still moves rightwards, so that the rotating plate (8) can drive the fixed shaft (10) to rotate downwards, the fixed shaft (10) drives the connecting rod (12) to move rightwards, the connecting rod (12) pulls the moving plate (4) rightwards through the connecting shaft seat (11), the impact block (5) is separated from the right side surface of the hammer head (2), and when the fixed shaft (10) rotates to the rightmost side, the rack (13) still moves rightwards;
after the fixed shaft (10) rotates for a circle, the rack (13) continues to move rightwards, the fixed shaft (10) rotates for the second circle at the moment, so that the impact block (5) is driven to knock the hammer (2) for the second time, and after the fixed shaft (10) rotates for three circles, the penetrating shaft (14) compresses the compression spring (21) to the maximum value;
after the compression spring (21) is compressed to the limit position, the force of the magnetic block (15) driven by the attaching plate (19) through magnetic force to move rightwards is smaller than the force of the compression spring (21) which drives the cylindrical plate of the through shaft (14) elastically, the bottom end of the compression rod (163) is in contact with the right side face of the hammer handle (1), at the moment, the elasticity of the compression spring (21) can drive the through shaft (14) to move leftwards, so that the rack (13) is driven to move leftwards, the rack (13) can drive the rotating plate (8) to rotate clockwise, the connecting rod (12) can drive the impact block (5) to move leftwards again for three times, and the continuous knocking on the right end of the hammer head (2) can be realized by pressing the compression rod (163 once;
after the hammer head (2) strikes and stimulates the end face of the anchor rod for six times, the pressing rod (163) is loosened, the bottom end of the pressing rod (163) is driven to rotate rightwards by the elasticity of the reset spring (17), the top end of the pressing rod (163) rotates leftwards, the attaching plate (19) is driven to attach to the magnetic block (15) again through the fixing block (18), and the next detection is waited.
CN202110796065.1A 2021-07-14 2021-07-14 Small exciting hammer for detecting stress wave of anchor rod and using method of small exciting hammer Active CN113686954B (en)

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