CN111175377B - Positioning device of ultrasonic measuring transducer on rock surface - Google Patents
Positioning device of ultrasonic measuring transducer on rock surface Download PDFInfo
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- CN111175377B CN111175377B CN202010010791.1A CN202010010791A CN111175377B CN 111175377 B CN111175377 B CN 111175377B CN 202010010791 A CN202010010791 A CN 202010010791A CN 111175377 B CN111175377 B CN 111175377B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating 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
- G01N29/04—Analysing solids
- G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating 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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention provides a positioning device of a rock mass surface ultrasonic measuring transducer, which comprises: a pair of body frame, a pair of subframe, one set of locating rule and at least a pair of transducer fixed knot construct, wherein: the pair of main frames are oppositely arranged, the pair of auxiliary frames are oppositely arranged, and the main frames and the auxiliary frames are connected to form a quadrilateral frame structure; the set of positioning ruler is positioned in the frame structure, two ends of the set of positioning ruler are respectively arranged on the pair of auxiliary frames, and the positioning ruler can longitudinally translate along the auxiliary frames in the frame structure; the pair of transducer holding structures are mounted on the dipstick and are capable of moving back and forth on the dipstick and being held in different positions to determine the distance between the two transducers from the scale on the dipstick. The device can be used for continuously positioning in the area to be measured, and the device is only required to be installed and then laid on the leveling of the area to be measured on the surface of the rock body when in use, so that the device is convenient to use and accurate in positioning.
Description
Technical Field
The invention belongs to the field of rock mass surface ultrasonic measurement, and particularly relates to a positioning device of a rock mass surface ultrasonic measurement transducer.
Background
The ultrasonic testing technology has more applications in the field of geotechnical engineering. For example, parameters such as wave velocity, wave amplitude and wave shape of ultrasonic waves in a rock medium are observed and analyzed, so that the method has important significance for analyzing physical and mechanical properties, weathering degree, structural characteristics and the like of rock materials. The ultrasonic propagation time between two measuring points can be obtained through ultrasonic wave speed detection, and the propagation speed of the ultrasonic wave at the distance can be obtained by dividing the distance between the two transducers by the ultrasonic propagation time.
The ultrasonic wave velocity measuring method comprises a same-side direct wave method and an opposite penetration method. The same-side direct wave method is used for measuring on one plane of the rock mass to be measured. When the ultrasonic wave velocity meter is used for measuring the surface of a rock body according to the same-side direct wave method, firstly, chalk or a pencil is used for marking two points on the surface of the measured rock body, the distance between the two points is a specific value (such as 100mm), then, the central points of the bottom surfaces of a pair of transducers are respectively close to the marked two points and are tightly pressed, the measurement is carried out, the propagation time on the wave velocity meter is measured, and the wave velocity can be obtained through calculation. However, the method inevitably causes the situation that the center of the bottom surface of the transducer is not coincident with the mark point, and certain errors are caused. For example, if the actual distance between the two transducers differs by 10mm from the marker value (i.e. 100mm as described above), i.e. the actual distance of the two transducers is 90mm or 110mm, then the measured wave velocity value is 11.1% greater or 9.1% less than the true value.
In order to solve the problem that the center of the transducer is not coincident with the mark point in the positioning process of the transducer, a set of transducer positioning device needs to be invented for improving the positioning accuracy and the measurement accuracy. Heretofore, some have recognized this problem and attempted to invent transducer locating devices, but they all have their deficiencies. The invention relates to a transducer positioning device for detecting the crack depth of a concrete member, namely the Yuyian at the south university in 2010, and the application number is as follows: CN201010144693.3, the device is positioned by a triangular section shaft ruler provided with two vernier fixing transducers, the device can only realize continuous positioning on a line but not in a certain area, and the ruler body is too long to be carried. The invention discloses an ultrasonic testing transducer positioning device by Nalimen et al, a seventh engineering administration of Chinese water conservancy and hydropower, 2010, and the application number is as follows: CN201010154324.2, the location principle of this device is that fretwork locating hole in advance on a board, and this board is used for the transducer location on the pad during measurement. Although the device can position the transducer, the relative distance of the pre-hollowed holes is fixed, the radius of the holes is also fixed, and the device cannot be used for testing different transducers and the condition that a specific distance is required. The invention relates to a positioning device of an ultrasonic transducer for detecting concrete crack depth, which is invented by 2017 Nianhui engineering design group, Inc., Luo Wei, and the like, and has the following application numbers: CN201721056843.9, the device is similar to the invention of the Nippon Teyigan et al (application number: CN201010144693.3) at the university of China and south, is a single-shaft vernier positioning device, and has the problems that the continuous positioning can be realized only on one line, and the carrying is influenced because the ruler body is too long.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the positioning device of the ultrasonic measuring transducer on the surface of the rock mass, which can continuously position in the area to be measured, and when in use, the positioning device is only required to be installed and then laid on the leveling area of the surface of the rock mass, so that the positioning device is convenient to use and accurate in positioning.
The invention provides a positioning device of a rock mass surface ultrasonic measuring transducer, which comprises: a pair of main frames, a pair of auxiliary frames, a set of positioning rules and at least a pair of transducer fixing structures, wherein
The pair of main frames are oppositely arranged, the pair of auxiliary frames are oppositely arranged, and the main frames and the auxiliary frames are connected to form a quadrilateral frame structure;
the set of positioning ruler is positioned in the frame structure, two ends of the set of positioning ruler are respectively arranged on the pair of auxiliary frames, and the positioning ruler can longitudinally translate along the auxiliary frames in the frame structure;
the pair of transducer holding structures are mounted on the dipstick and are capable of moving back and forth on the dipstick and being held in different positions to determine the distance between the two transducers from the scale on the dipstick.
As an improvement, the main frame is of a nested telescopic structure and consists of an outer sleeve and an inner sleeve, and the inner sleeve can telescopically move in an inner cavity of the outer sleeve so as to adjust the length of the main frame; preferably, the outer walls of the outer sleeve and the inner sleeve are provided with scales for accurately positioning the length of the main frame; preferably, the outer sleeve is provided with a first brake knob for fixing the outer sleeve and the inner sleeve after the outer sleeve and the inner sleeve stretch to a certain length; preferably, one end of the outer sleeve, which is close to the inner sleeve, is provided with a first anti-drop hole, and one end of the inner sleeve, which is close to the outer sleeve, is correspondingly provided with a first anti-drop key.
As an improvement, the two ends of the main frame are provided with slots or cavities for accommodating the auxiliary frame, the two ends of the auxiliary frame are provided with reducing sections matched with the slots or the cavities, and the main frame and the auxiliary frame are fixed by inserting the reducing sections into the slots or the cavities.
As an improvement, nut cup support legs are arranged at least at four corners of the quadrilateral frame structure and comprise screws, nut cups and foot pads and are used for adjusting the flatness of the frame structure; preferably, a level is mounted on the main frame.
As an improvement, the cross section of the subframe is of a C-shaped half-pack structure, and corresponding upper and lower guide rails are formed at two free ends of the C shape; preferably, the upper and lower surfaces at both ends of the positioning ruler are respectively provided with a roller, and the upper and lower rollers are matched with the upper and lower guide rails and can roll along the upper and lower guide rails.
As an improvement, the positioning ruler is of a nested telescopic structure and consists of a female ruler and a metric ruler, and the metric ruler can telescopically move in an inner cavity of the female ruler, so that the length of the positioning ruler is adjusted; preferably, the female ruler is provided with a second brake knob for fixing the female ruler and the male ruler after the female ruler and the male ruler are stretched to a certain length; preferably, one end of the female ruler, which is close to the male ruler, is provided with a second anti-falling hole, and one end of the male ruler, which is close to the female ruler, is correspondingly provided with a second anti-falling key; preferably, the first anti-dropping key and/or the second anti-dropping key comprise keycaps and springs.
As an improvement, the transducer fixing structure consists of an elastic fixing clamp, a belt structure and a height difference angle trimmer, one end of the height difference angle trimmer is connected to the elastic fixing clamp, the other end of the height difference angle trimmer is connected to the belt structure, the elastic fixing clamp is used for clamping on the positioning ruler, the belt is used for binding the transducer, and the height difference angle trimmer is used for trimming the height difference and the angle of the transducer, so that the transducer can be tightly attached to the surface of a measured rock mass.
As an improvement, the elastic fixing clamp adopts a compression spring structure and comprises a fixing clamp body, a movable handle, a push rod, a compression spring and a movable chuck, wherein the movable handle is connected with one end of the push rod and can drive the push rod to move, the other end of the push rod is connected with the movable chuck and can drive the movable chuck to move, one end of the compression spring is abutted against the fixing clamp body, and the other end of the compression spring is connected with the push rod; preferably, the elastic fixing clip further comprises a fixing handle arranged on the fixing clip body and used for being matched with the movable handle to be pinched; preferably, the elastic fixing clip further comprises a fixing clip head integrally formed at an end of the fixing clip body opposite to the movable clip head; preferably, the fixing clip body is provided with an inner cavity, the push rod and the compression spring are arranged in the inner cavity, one end of the compression spring abuts against the inner wall of the inner cavity, and the other end of the compression spring is connected to the push rod.
As an improvement, the height difference angle trimmer comprises a connecting rod, and a cylindrical hinge and a spherical hinge which are arranged at two ends of the connecting rod, wherein the cylindrical hinge can enable the connecting rod to swing up and down by taking the connecting rod as a base point, and the spherical hinge can enable the belt connecting part to freely rotate by taking the connecting rod as a base point; preferably, one side that the band connecting portion is located the altitude difference angle fine adjuster is provided with the ball pivot chamber, the ball pivot sets up in this ball pivot intracavity.
As an improvement, the belt structure comprises a belt body and a belt connecting part, the belt body is used for binding the transducer, one side of the belt connecting part is connected with and fixes the fixed end of the belt body, and the other side of the belt connecting part is provided with a through hole; preferably, the free end of the bridle body is a nylon hook belt, and the bonding surface of the bridle body is a nylon velvet belt; preferably, the binding surface of the belt body is rubber; preferably, a transducer fixing backrest is arranged on one side of the transducer of the belt connecting part and used for stabilizing the transducer when the belt body restrains the transducer; preferably, the transducer fixing backrest is two convex ribs which are spaced at a certain distance and are symmetrically arranged relative to the center of the transducer; preferably, the end face of the convex rib is arranged to be a wedge-shaped face; preferably, the transducer fixing backrest is of a backrest structure with a surface in an arc surface, and the arc surface is matched with the arc surface of the transducer.
Has the advantages that:
after the technical scheme is adopted, compared with the prior art, the invention at least has the following main technical effects:
1. the positioning device can continuously position in the area to be measured through reasonable and ingenious design, and the device is only required to be installed and laid on the leveling area to be measured on the surface of the rock body when in use, so that the use is convenient;
2. through the use of the positioning ruler, the transducer is accurately positioned, and the subsequent measurement is accurate;
3. the main frame and the positioning ruler are telescopic, the required size is convenient to adjust, and the space is saved during storage;
4. the transducer fixing structure consists of a flexible belt and a spring clamp, the flexible belt is designed to enable the transducer fixing structure to be well attached and fixed with a plurality of transducers with different sizes, and the spring clamp is designed to enable the transducer fixing structure to be conveniently clamped at different positions on the positioning ruler, so that the distance between the transducers is conveniently adjusted;
5. the subframe provides the track that slides for the locating rule, and the track that its half package butt cross-section formed makes the locating rule difficult break away from in the subframe.
6. The ingenious design of difference in height angle fine setting ware structure can overcome the difference in height of elastic fixation clamp apart from ground well to and because the rock mass surface that awaits measuring probably has the unevenness, ensure that the transducer can hug closely the rock mass surface that awaits measuring properly.
Drawings
FIG. 1 is a schematic overall view of one embodiment of a positioning device of the present invention (transducer holding structure not shown);
FIG. 2 is a schematic structural view of one embodiment of the frame of the present invention, wherein (a) is in a retracted state and (b) is in an extended state;
FIG. 3 is a schematic cross-sectional view of an embodiment of the main frame of the present invention, wherein (a) is a schematic cross-sectional view of the outer casing, (b) is a schematic cross-sectional view of the inner casing, and (c) is a schematic cross-sectional view of the inner and outer casings in an assembled state;
FIG. 4 is a schematic view of the connection structure of the main frame and the sub-frame of the present invention, wherein (a) is slot plugging and (b) is cavity plugging;
FIG. 5 is a schematic view of a nut-cup leg configuration according to one embodiment of the present frame;
FIG. 6 is a schematic view of the attachment of one embodiment of the subframe and alignment ruler of the present invention;
FIG. 7 is a schematic structural view of one embodiment of a positioning rule of the present invention;
FIG. 8 is a schematic top view of the positioning ruler in a retracted state according to the present invention;
FIG. 9 is a schematic top view of the positioning rule of the present invention in an extended state;
FIG. 10 is a side view schematic diagram of one embodiment of a transducer holding structure of the present invention;
FIG. 11 is a schematic top view of one embodiment of a transducer mounting structure of the present invention (with the strap structure not shown);
FIG. 12 is a schematic view of a differential height fine adjuster according to the present invention, wherein (a) is a schematic view and (b) is a schematic view;
FIG. 13 is a schematic view of a modified form of a transducer fixed back, wherein (a) is a schematic view of one embodiment of a transducer fixed back and (b) is a schematic view of another embodiment of a transducer fixed back;
FIG. 14 is a schematic side view of a belt structure according to an embodiment of the present invention, wherein (a) is a schematic side view of a bonded surface of the belt structure and (b) is a schematic side view of a restrained surface of the belt structure.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device, component, or structure referred to must have a particular orientation, be constructed or operated in a particular orientation, and should not be construed as limiting the present invention.
It will be further understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
The following will further explain the specific implementation method of the present invention with reference to the attached drawings.
The positioning device of the rock mass surface ultrasonic measuring transducer is used for positioning the ultrasonic measuring transducer during rock mass surface ultrasonic measurement, so that the problems of inaccuracy and inconvenience in positioning the transducer during traditional rock mass surface ultrasonic measurement are solved.
As shown in fig. 1, the positioning device includes: a pair of main frame 1, a pair of subframe 2, a set of spacer 3 and at least a pair of transducer fixed knot construct 4, wherein:
a pair of body frame 1 sets up relatively, and a pair of subframe 2 also sets up relatively to body frame and subframe link to each other and constitute quadrilateral frame structure, place quadrilateral frame structure in the rock mass surface that awaits measuring during the use, the rock mass region that awaits measuring is enclosed and is closed in frame construction.
A set of positioning rule 3 is positioned in the frame structure, two ends of the positioning rule are respectively arranged on the pair of auxiliary frames 2, and the positioning rule can translate along the longitudinal direction of the auxiliary frames in the frame structure.
A pair of transducer holding structures 4 are mounted on the rule 3, see fig. 7, 8, and can be moved back and forth across the rule and held in different positions to determine the distance between the two transducers according to the scale on the rule.
The various parts of the positioning device are described in detail below with reference to the accompanying drawings so that the present invention may be fully disclosed.
In one embodiment, referring to fig. 2, the frame 1 is a nested telescopic construction, consisting of an outer sleeve 101 and an inner sleeve 102, which is telescopically movable in the inner cavity of the outer sleeve, thereby adjusting the length of the frame.
As an improvement, the outer walls of the outer sleeve and the inner sleeve are provided with scales for accurately positioning the length of the main frame, and the total length of the main frame can be conveniently determined by observing the scales, so that the size of the whole frame can be quantitatively changed according to the size of the actual rock mass area to be measured when the device is used.
As an improvement, a first brake knob 106 is arranged on the outer sleeve 102 and used for realizing fixation of the outer sleeve and the inner sleeve by screwing the brake knobs after the outer sleeve and the inner sleeve stretch to a certain length;
as a modification, referring to FIG. 3, an end of the outer sleeve 101 close to the inner sleeve is provided with a first anti-drop hole 103, and an end of the inner sleeve 102 close to the outer sleeve is correspondingly provided with a first anti-drop key, and the first anti-drop key comprises a keycap 104 and a compression spring 105. Through the grafting of anticreep hole and anticreep key spacing, when the interior sleeve pipe extension goes on to the end of outer tube soon, the anticreep key cap 104 of interior sleeve pipe is in the anticreep hole 103 of the outer tube 101 of the salient under compression spring 105's effect to pin interior sleeve pipe and outer tube of body frame, ensure that the inner sleeve pipe is unlikely to break away from the outer tube when the extension reaches maximum length in the outer tube.
As a modification, referring to fig. 4, the main frame 1 has slots or cavities at both ends thereof for receiving the sub-frames 2, fig. 4(a) shows a slot 108 having a shape matching the cross-sectional shape of the sub-frame, and fig. 4(b) shows a cavity 108', and accordingly, both ends of the sub-frame 2 are provided with reduced diameter sections 201 matching the slot or cavity, and the main frame and the sub-frame are fixed by inserting the reduced diameter sections into the slot or cavity.
As an improvement, referring to fig. 5 and fig. 1, nut cup support legs are arranged at least at four corners of the quadrilateral frame structure and comprise screws 109, nut cups 110 and foot pads 111, the upper ends of the screws 109 are screwed into slots or cavities of the main frame 1 and fixed with the main frame, and the flatness of the frame structure is adjusted by adjusting the positions of the nut cups 110 on the screws 109.
As a modification, referring again to FIG. 2, the outer casing 101 of the main frame is provided with a level 107, and when in use, the nut cups 110 at the two ends of the main frame are adjusted to be bubble-centered in the level 107 so as to level the main frame, thereby completing the installation work of the invention.
As a modification, referring to fig. 6, the cross section of the sub-frame 2 is a C-shaped half-wrapped structure, and corresponding upper and lower guide rails 202 are formed at two free ends of the C-shaped structure; as an improvement, corresponding to the upper and lower guide rails 202, the rollers 301 are mounted on the upper and lower surfaces of the two ends of the positioning ruler 3, the upper and lower rollers are matched with the upper and lower guide rails and can roll along the upper and lower guide rails, so that the positioning ruler is convenient to longitudinally translate along the auxiliary frame in the frame structure, and the auxiliary frame of the C-shaped half-wrapped structure is combined with the mutual embedding of the rollers and the guide rails, so that the positioning ruler can be prevented from slipping from the auxiliary frame.
In one embodiment, referring to fig. 7-9, the positioning rule 3 is a nested telescopic structure, and is composed of a female rule 302 and a male rule 303, the female rule 302 is provided with an inner cavity 304, the male rule can telescopically move in the inner cavity of the female rule, and the length of the positioning rule is adjusted, so that the length of the positioning rule is consistent with the length of the main frame.
As an improvement, the female ruler 302 is provided with a second brake knob 305, and the female ruler and the male ruler are fixed by screwing the second brake knob after being stretched to a certain length.
As a modification, one end of the female ruler 302 close to the male ruler is provided with a second anti-drop hole (not shown in the figure), and one end of the male ruler close to the female ruler is correspondingly provided with a second anti-drop key, and in the invention, the second anti-drop key comprises a keycap 306 and a compression spring 307. Through the grafting of anticreep hole and anticreep key spacing, when the metric chi extension goes on to the end of female chi soon, the key cap 306 of metric chi is in the anticreep hole two of female chi of the abrupt income under compression spring 307's effect to pin metric chi and female chi, guarantee that the metric chi is unlikely to break away from female chi when the length of extension to maximum in female chi.
In one embodiment, referring to fig. 8, the transducer fixing structure 4 is composed of an elastic fixing clip 401, a belt structure 402 and a height difference angle trimmer 403, wherein one end of the height difference angle trimmer is connected to the elastic fixing clip, the other end of the height difference angle trimmer is connected to the belt structure, the elastic fixing clip is used for clamping on the positioning rule 3, the belt of the belt structure is used for binding the transducer 5, and the height difference angle trimmer is used for trimming the height difference and the angle of the transducer, so that the transducer can be tightly attached to the surface of the rock to be measured. Through using transducer fixed knot to construct, can firmly be positioned the transducer on the locating rule to combine the flexible of locating rule, the distance between two transducers is adjustable, and can be controlled by the accuracy, thereby realizes the accurate of rock mass surface ultrasonic measurement distance and confirms, avoids current error and the inconvenience that measures and cause.
As an improvement, referring to fig. 10 and 11, the elastic fixing clip 401 adopts a compression spring structure, and includes a fixing clip body 404, a movable handle 405, a push rod 406, a compression spring 407, and a movable chuck 408, the movable handle is connected to one end of the push rod and can drive the push rod to move, the other end of the push rod is connected to the movable chuck and can drive the movable chuck to move, one end of the compression spring abuts against the fixing clip body, and the other end of the compression spring is connected to the push rod.
As a modification, as shown in fig. 10, the elastic fixing clip further includes a fixing handle 409 disposed on the fixing clip body, for cooperating with the movable handle for pinching; when the positioning ruler is used, an operator simultaneously pinches the movable handle 405 and the fixed handle 409, the movable handle 405 pushes the push rod 406 rightwards, the push rod 406 drives the movable chuck 408 to open, so that the elastic fixing clamp is loosened from the positioning ruler, after the operator loosens the pinching force, the push rod 406 is pushed leftwards again under the action of the elastic force of the compression spring 407, the movable chuck 408 is driven to approach the fixed handle 409, and the positioning ruler is clamped.
As a modification, the elastic fixing clip further includes a fixed clip 410 integrally formed at an end of the fixing clip body opposite to the movable clip 408, and the fixed clip 410 and the movable clip 408 cooperate to achieve clamping.
As an improvement, the fixing clip body 404 is provided with an inner cavity, the push rod 406 and the compression spring 407 are arranged in the inner cavity, one end of the compression spring abuts against the inner wall of the inner cavity, the other end of the compression spring is connected to the push rod 406, and the push rod and the compression spring are arranged in the inner cavity, so that the structure is more compact and reasonable, and the use is more convenient.
In one embodiment, referring to fig. 10, the strap structure 402 includes a strap body 411 and a strap connecting portion 412, the strap body is used for binding the transducer 5, as shown in fig. 8 and 9, one side of the strap connecting portion is connected and fixed to a fixed end of the strap body, a threading hole 413 is formed in the other side of the strap connecting portion, and the strap body 411 passes through the threading hole 413 after binding the transducer to realize fixation.
In one embodiment, referring to fig. 11 and 12, the height-difference angle trimmer 403 includes a link 417, and a column hinge 418 and a spherical hinge 419 disposed at two ends of the link, wherein the column hinge can make the link swing up and down with the link as a base point, and the spherical hinge can make the strap connecting portion 412 rotate freely with the link as a base point. On one hand, after the elastic fixing clamp is clamped on the positioning ruler, the elastic fixing clamp has a certain height from the ground, and the surface of the rock to be measured is likely to have unevenness; on the other hand, because the rock mass surface that awaits measuring probably has the height not flat, the transducer probably can't hug closely the rock mass surface that awaits measuring, through this kind of setting, the band connecting portion uses the ball pivot as the base point free rotation, even the rock mass surface height that awaits measuring is not flat, also can ensure well that two transducers hug closely the rock mass surface that awaits measuring, guarantees the ultrasonic measurement result.
As a modification, referring to fig. 10 and 14(a), a spherical hinge cavity 420 is provided at one side of the strap connecting part 412 located at the height difference angle fine adjuster, and a spherical hinge 419 is provided in the spherical hinge cavity 420, and the spherical hinge cavity accommodates the spherical hinge to provide a free-rotation carrier and space for the spherical hinge.
As a modification, referring to fig. 11 and 14(b), the band connecting portion 412 is provided with a transducer fixing back 416 on one side of the transducer, and the transducer fixing back 416 abuts against the transducer when the transducer is bound for stabilizing the transducer.
As a modification, referring to FIG. 11, the transducer fixing backrest is formed by two ribs which are spaced apart from each other and are symmetrically arranged with respect to the center of the transducer.
Further, the end surface of the rib may be configured as a wedge surface, as shown in fig. 13(a), the wedge surface can more firmly abut against the transducer, or the transducer fixing backrest is a backrest structure with a surface having an arc surface, as shown in fig. 13(b), the arc surface matches with the arc surface of the transducer, and can also more firmly abut against the transducer.
As a modification, referring to fig. 14(a), the free end of the belt body is a nylon hook tape 414, and the bonding surface of the belt body is a nylon velvet tape; in the present invention, referring to fig. 14(b), the binding surface of the belt body is further designed as a rubber surface 415, which can increase friction force and prevent the transducer from slipping off when the transducer is bound.
Thus, it should be understood by those skilled in the art that while exemplary embodiments of the present invention have been illustrated and described in detail herein, many other variations and modifications can be made, which are consistent with the principles of the invention, from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (25)
1. A positioning device of a rock mass surface ultrasonic measuring transducer is characterized by comprising: a pair of main frames, a pair of auxiliary frames, a set of positioning rules and at least a pair of transducer fixing structures, wherein
The pair of main frames are oppositely arranged, the pair of auxiliary frames are oppositely arranged, and the main frames and the auxiliary frames are connected to form a quadrilateral frame structure;
the set of positioning ruler is positioned in the frame structure, two ends of the set of positioning ruler are respectively arranged on the pair of auxiliary frames, and the positioning ruler can longitudinally translate along the auxiliary frames in the frame structure;
the pair of transducer fixing structures are arranged on the positioning ruler and can move back and forth on the positioning ruler and keep different positions, so that the distance between the two transducers is determined according to the scales on the positioning ruler;
the main frame is of a nested telescopic structure and consists of an outer sleeve and an inner sleeve, and the inner sleeve can move in a telescopic manner in an inner cavity of the outer sleeve, so that the length of the main frame is adjusted;
the positioning ruler is of a nested telescopic structure and consists of a female ruler and a metric ruler, and the metric ruler can telescopically move in an inner cavity of the female ruler, so that the length of the positioning ruler is adjusted; and is
The transducer fixing structure consists of an elastic fixing clamp, a belt structure and a height difference angle trimmer, one end of the height difference angle trimmer is connected with the elastic fixing clamp, the other end of the height difference angle trimmer is connected with the belt structure, the elastic fixing clamp is used for clamping the positioning ruler, the belt structure is used for binding the transducer, and the height difference angle trimmer is used for trimming the height difference and the angle of the transducer so that the transducer can be tightly attached to the surface of a measured rock mass;
the height difference angle trimmer comprises a connecting rod, and a column hinge and a spherical hinge which are arranged at two ends of the connecting rod, wherein the column hinge can enable the connecting rod to swing up and down by taking the connecting rod as a base point, and the spherical hinge can enable the belt structure to rotate freely by taking the belt structure as the base point.
2. The positioning device as set forth in claim 1, wherein the outer walls of the outer and inner sleeves are provided with graduations for precisely positioning the length of the main frame.
3. The positioning device as set forth in claim 1, wherein the outer sleeve is provided with a first detent knob for fixing the outer sleeve and the inner sleeve after they are extended to a certain length.
4. The positioning device as set forth in claim 1, wherein a first anti-slip hole is provided at an end of the outer sleeve close to the inner sleeve, and a first anti-slip key is correspondingly provided at an end of the inner sleeve close to the outer sleeve.
5. The positioning device of claim 4, wherein said anti-disengagement key comprises a key cap and a spring.
6. The positioning device according to claim 1, wherein the main frame is provided with slots or cavities at both ends thereof for accommodating the sub-frame, and the sub-frame is provided with reduced diameter sections at both ends thereof for matching with the slots or cavities, and the main frame and the sub-frame are fixed by inserting the reduced diameter sections into the slots or cavities.
7. The positioning device according to claim 1, wherein nut cup legs, including screws, nut cups and foot pads, are provided at least at four corners of the quadrilateral frame structure for adjusting the flatness of the frame structure.
8. The positioning device of claim 7, wherein a level is mounted on the main frame.
9. The positioning device as set forth in claim 1, wherein the sub-frame has a C-shaped cross section and a half-enclosed structure, and corresponding upper and lower guide rails are formed at both free ends of the C-shape.
10. The positioning device as set forth in claim 9, wherein rollers are mounted on upper and lower surfaces of both ends of the positioning rule, and the upper and lower rollers are engaged with the upper and lower guide rails to roll along the upper and lower guide rails.
11. The positioning device as recited in claim 1, wherein the female ruler is provided with a second brake knob for fixing the female ruler and the male ruler after the female ruler and the male ruler are extended to a certain length.
12. The positioning device as recited in claim 1, wherein a second anti-drop hole is formed at one end of the female ruler close to the male ruler, and a second anti-drop key is correspondingly formed at one end of the male ruler close to the female ruler.
13. The positioning device of claim 12, wherein the anti-disengagement key comprises a key cap and a spring.
14. The positioning device according to any one of claims 1 to 13, wherein the elastic fixing clip is of a compression spring structure and comprises a fixing clip body, a movable handle, a push rod, a compression spring and a movable chuck, the movable handle is connected with one end of the push rod and can drive the push rod to move, the other end of the push rod is connected with the movable chuck and can drive the movable chuck to move, one end of the compression spring abuts against the fixing clip body, and the other end of the compression spring is connected with the push rod.
15. The positioning device as set forth in claim 14 wherein said resilient mounting clip further comprises a stationary handle disposed on said mounting clip body for cooperating with said movable handle for grasping.
16. The positioning device as set forth in claim 14 wherein said resilient clamp further comprises a fixed collet integrally formed at an end of said clamp body opposite said movable collet.
17. The positioning device as set forth in claim 14 wherein said retaining clip body has an interior cavity, said push rod and compression spring being disposed in said interior cavity, said compression spring having one end abutting an interior wall of said interior cavity and the other end connected to said push rod.
18. The positioning device according to any one of claims 1 to 13, wherein a spherical hinge cavity is provided in one side of the strap structure on the differential height angle trimmer, and the spherical hinge is disposed in the spherical hinge cavity.
19. The positioning device as set forth in any one of claims 1 to 13, wherein the belt structure comprises a belt body for restraining the transducer and a belt connecting portion, one side of the belt connecting portion is connected and fixed to a fixed end of the belt body, and the other side of the belt connecting portion is provided with a through hole.
20. The positioning device as set forth in claim 19 wherein the free end of the strap body is a nylon hook tape and the adhesive surface of the strap body is a nylon fleece tape.
21. The positioning device as set forth in claim 19 wherein said tie surface of said tie body is rubber.
22. The positioning device as set forth in claim 19 wherein the strap connecting portion is provided with a transducer fixing back at a side of the transducer for stabilizing the transducer when the strap body restrains the transducer.
23. The positioning apparatus according to claim 22 wherein the transducer holder back is formed as two spaced ribs symmetrically disposed about the center of the transducer.
24. A positioning device as set forth in claim 23 wherein said rib end surfaces are configured as wedge surfaces.
25. The positioning device as set forth in claim 22 wherein said transducer fixed back is a back structure having a circular arc surface, said circular arc surface matching said circular arc surface of said transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010791.1A CN111175377B (en) | 2020-01-06 | 2020-01-06 | Positioning device of ultrasonic measuring transducer on rock surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010791.1A CN111175377B (en) | 2020-01-06 | 2020-01-06 | Positioning device of ultrasonic measuring transducer on rock surface |
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| CN111175377A CN111175377A (en) | 2020-05-19 |
| CN111175377B true CN111175377B (en) | 2021-05-25 |
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| CN202010010791.1A Active CN111175377B (en) | 2020-01-06 | 2020-01-06 | Positioning device of ultrasonic measuring transducer on rock surface |
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| CN111175377A (en) | 2020-05-19 |
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