CN115326616A

CN115326616A - Road and bridge concrete structure detection device and detection method thereof

Info

Publication number: CN115326616A
Application number: CN202211251421.2A
Authority: CN
Inventors: 杨立才; 谭小龙; 周国贞
Original assignee: Guangdong Huanda Engineering Testing Co ltd
Current assignee: Guangdong Huanda Engineering Testing Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2022-11-11
Anticipated expiration: 2042-10-13
Also published as: CN115326616B

Abstract

The invention relates to the technical field of concrete structure detection, in particular to a road and bridge concrete structure detection device and a detection method thereof, and the device comprises a machine body, an ultrasonic detection unit sliding in the machine body and a rotating unit movably connected to the ultrasonic detection unit, wherein a first elastic element with elastic action on the ultrasonic detection unit is also arranged in the machine body; the invention can realize springback detection and ultrasonic detection quickly, has high detection efficiency and is convenient to operate.

Description

Road and bridge concrete structure detection device and detection method thereof

Technical Field

The invention relates to the technical field of concrete structure detection, in particular to a road and bridge concrete structure detection device and a detection method thereof.

Background

At present, an ultrasonic rebound synthesis method is adopted for detecting a concrete strength structure of a road and bridge, and is characterized in that an ultrasonic instrument and a resiliometer are adopted, a sound time value and a rebound value are respectively measured in the same measuring area of structural concrete, and then the concrete strength of the measuring area is calculated by utilizing an established strength measuring formula. Compared with a single rebound method or an ultrasonic method, the ultrasonic rebound comprehensive method has the advantages of being less influenced by the age and the water content of the concrete, high in test precision, wide in application range, capable of comprehensively reflecting the actual quality of the structural concrete and the like.

When detecting the concrete structure strength of the road and bridge, because of the characteristics of the road and bridge, the ultrasonic detection should not adopt the angle measurement (as the position a of figure 1) and the opposite measurement (as the position b of figure 1), but suitably adopts the flat measurement (as the position c of figure 1), thereby when the flat measurement, the mesh detection area needs to be drawn or printed on the road surface firstly, then, when the rebound detection is carried out, five groups of data are detected in the mesh detection area, when the ultrasonic detection is carried out, a group of data are respectively detected at the positions of 100mm, 150mm and 200mm along the diagonal line of the mesh detection area, according to the five groups of data average value of the rebound detection and the three groups of data average value of the ultrasonic detection, the corresponding strength conversion value is searched in the concrete compression strength conversion table, and finally, the calculation is carried out according to the strength conversion value.

However, when the ultrasonic resilience comprehensive method is adopted to detect the concrete strength, the grid detection area needs to be drawn or printed out firstly, the ultrasonic detection points are drawn along the diagonal positions of the grid detection area, such as 100mm, 150mm and 200mm, and then resilience detection and ultrasonic detection are carried out in sequence, so that the detection efficiency is low, and at least two to three persons are required to operate, and the operation is complex.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a road and bridge concrete structure detection device and a detection method thereof, which can effectively solve the problems of low detection efficiency and complex detection operation in the prior art.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a road and bridge concrete structure detection device, includes organism, the ultrasonic testing unit and the swivelling unit of swing joint on the ultrasonic testing unit of slip in the organism, still be provided with the first elastic component to ultrasonic testing unit elastic action in the organism, ultrasonic testing unit includes the rack that sets up along organism diagonal and slides the activity plane transducer on the rack, rack end fixing has the fixed plane transducer with activity plane transducer complex, swivelling unit includes swing joint central siphon on the rack, be fixed with the trackpad on the central siphon, it has the resilience detecting unit to slide on the trackpad, central siphon and activity plane transducer transmission cooperation, make every central siphon rotate 90, activity plane transducer removes 50mm, and earlier with resilience detecting unit remove to the central siphon after shifting out the central siphon again in, then follow same direction of rotation again, rotate 90 with the central siphon at every turn, then activity plane transducer removes 50mm along the opposite direction and resets, is provided with the second elastic component of multiunit elastic action of pipe on the rack, presses the central siphon, makes the detection end contact of activity plane transducer, fixed plane transducer and organism detecting unit wear out and detection face.

Furthermore, a folding frame in sliding connection with the machine body is arranged on the rail frame, a second guide rod is fixed on the folding frame, a tray in contact with the rail plate is sleeved on the second guide rod, and a second elastic piece is sleeved on the second guide rod and plays an elastic role in the tray.

Furthermore, the movable planar transducer is fixedly connected with two parallel racks with different surfaces, the shaft tube is coaxially and slidably connected with a gear ring, and the gear ring can be switched between the two racks and meshed with the two racks.

Furthermore, be fixed with the slide bar on the ring gear, be provided with the joint unit to the slide bar joint on the central siphon, when resilience detecting element removed to the central siphon, enable the slide bar and remove along central siphon axis direction to carry out the joint with the joint unit of fixing on the central siphon, make the ring gear switch the meshing.

Furthermore, the clamping unit comprises a clamping frame and a third elastic piece for elastically acting on the clamping frame, a bayonet capable of being matched with the clamping frame clamping end in a clamping mode is formed in the sliding rod, a top block is further arranged in the machine body, and when the clamping frame contact end is in contact with the top block, the clamping frame clamping end is separated from the bayonet, and clamping and fixing of the sliding rod are relieved.

Furthermore, the rebound detection unit comprises a sliding ring with an I-shaped cross section and a rebound tester coaxially fixed on the sliding ring, the sliding ring is connected on the rail plate in a sliding manner, a wedge-shaped ring is arranged on one side of the sliding ring, and a wedge block capable of being matched with the wedge-shaped ring is fixed on the sliding rod.

Furthermore, the machine body comprises a machine body and a machine cover, wherein an arc groove body and a V-shaped guide opening for guiding the resiliometer are formed in the machine cover.

Furthermore, a knob is arranged at one end, penetrating out of the cover, of the pipe, a pointer is arranged on the knob, and scale marks are arranged on the cover.

A detection method of a road and bridge concrete structure is suitable for the detection device of the road and bridge concrete structure, and comprises the following steps:

s1, stably placing a machine body on concrete;

s2, pressing down the shaft tube until the rebound detection value and the ultrasonic detection value are stable, and loosening the shaft tube;

s3, rotating the shaft tube twice, rotating the shaft tube 90 degrees each time, and performing the step S2 once after each rotation;

s4, moving the springback detection unit to the shaft tube, and performing the step S2 again;

s5, after the axle tube is rotated by 90 degrees, the springback detection unit is moved out of the axle tube and moved to the end part of the rail plate, and then the step S2 is carried out again;

and S6, after the shaft tube is rotated by 90 degrees again, the step S2 is performed again.

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

according to the invention, through the transmission fit of the shaft tube and the movable plane transducer, each time the shaft tube rotates 90 degrees, the movable plane transducer moves 50mm, and after the rebound detecting unit is moved into the shaft tube and then out of the shaft tube, the shaft tube is rotated 90 degrees each time along the same rotating direction, the movable plane transducer moves 50mm in the opposite direction for resetting, so that a grid detecting area does not need to be drawn or printed, and meanwhile, only the shaft tube needs to be pressed, so that the detecting ends of the movable plane transducer, the fixed plane transducer and the rebound detecting unit are all contacted with a detecting surface for detecting, the rebound detection and the ultrasonic detection can be realized rapidly, the detection efficiency is high, and the operation is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic diagram of three ultrasonic testing modes;

FIG. 2 is a flow chart of the detection method of the present invention;

FIG. 3 is a schematic diagram of the structure of the detection site for ultrasonic detection and rebound detection in accordance with the present invention;

FIG. 4 is a schematic view of an overall first perspective structure of the present invention;

FIG. 5 is a schematic view of an overall second perspective structure of the present invention;

FIG. 6 is a schematic view of the present invention after removing the cover;

fig. 7 is a schematic view of the structure of the cover of the present invention;

FIG. 8 is a schematic view of the connection structure of the ultrasonic detection unit, the rotation unit, the rebound detection unit and the clamping unit according to the present invention;

FIG. 9 is an enlarged view of the structure at A in FIG. 8 according to the present invention;

FIG. 10 is a schematic structural diagram of an ultrasonic testing unit according to the present invention;

FIG. 11 is a schematic view of a rotary unit according to the present invention;

FIG. 12 is a schematic structural diagram of a rebound detecting unit according to the present invention;

FIG. 13 is a schematic view of a clamping unit according to the present invention;

FIG. 14 is a schematic structural view of the clamping unit with the half clamping seat removed according to the present invention;

the reference numerals in the drawings denote: 1. a body; 101. a body; 102. a machine cover; 103. a top block; 104. an arc-shaped groove body; 105. a V-shaped guide port; 106. scale lines; 107. a diagonal groove; 108. a first guide bar; 109. a rebound detection port; 110. a universal wheel; 111. a handle; 112. a butt strap; 2. an ultrasonic detection unit; 201. a rail frame; 202. a movable planar transducer; 203. a stationary planar transducer; 204. a second elastic member; 205. folding the frame; 206. a second guide bar; 207. a tray; 208. a rack; 209. a first guide groove; 210. a second guide groove; 211. a shaft hole; 212. detecting holes; 213. a slide plate; 214. a pulley; 3. a rotation unit; 301. an axle tube; 302. a rail plate; 303. a ring gear; 304. a slide bar; 305. a bayonet; 306. a wedge block; 307. a knob; 308. a pointer; 309. a limiting ring; 310. a notch; 311. an inner bracket; 312. a notch; 313. a support leg; 314. a fourth elastic member; 4. a first elastic member; 5. a springback detection unit; 501. a slip ring; 502. a resiliometer; 503. a wedge ring; 6. a clamping unit; 601. a clamping frame; 602. a third elastic member; 603. a card holder; 604. a roller; 605. a limiting block; 7. a battery; 8. and a controller.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all 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.

The present invention will be further described with reference to the following examples.

A road and bridge concrete structure detection device of this embodiment refers to 3-14: including organism 1, the ultrasonic detection unit 2 of slip in organism 1 and swing joint at the rotary unit 3 on ultrasonic detection unit 2, wherein, sliding connection has resilience detecting element 5 on rotary unit 3.

Specifically, referring to fig. 4-7, in the present technical solution, a housing specifically selected by the body 1 includes a body 101 and a cover 102 fixedly installed on an upper side (with fig. 4 as a reference direction, the same applies below) of the body 101, a storage battery 7 and a controller 8 electrically connected thereto are respectively and fixedly installed in the body 101, the controller 8 is electrically connected to a touch display screen fixed on the cover 102, the controller 8 is electrically connected to a movable planar transducer 202 and a fixed planar transducer 203 in the ultrasonic detection unit 2 and a resiliometer 502 in the resiliometer detection unit 5, the movable planar transducer 202 is matched with the fixed planar transducer 203, and transmits a detection signal to the controller 8 for processing, so as to obtain an ultrasonic detection value, and the resiliometer 502 processes the detected resiliometer detection value, and the ultrasonic detection value and the resiliometer detection value can be displayed on the touch display screen; meanwhile, a USB socket electrically connected to the controller 8 is disposed on the cover 102, so that data can be copied through a USB disk.

In order to facilitate moving and carrying the device, universal wheels 110 are rotatably connected to four corners of the body 101, and a handle 111 is rotatably connected to the body 101; wherein, two groups of universal wheels 110 at the rear side are provided with wheel brakes, and the handle 111 is provided with an access board 112; when the handle 111 is horizontally placed, the access board 112 is accessed on the pedal of the wheel brake, so as to form a support for the handle 111, and when detection is performed, the handle 111 is only needed to be pressed downwards, and the movement of the pedal of the wheel brake is simultaneously driven through the access board 112, so as to simultaneously brake the two groups of universal wheels 110 on the rear side.

A diagonal groove 107 for the ultrasonic detection unit 2 to slide is arranged in the body 101 along the diagonal line thereof; referring to fig. 8 to 10, the ultrasonic detection unit 2 includes a rail frame 201 sliding in the diagonal groove 107, folding frames 205 are symmetrically and fixedly mounted on the upper side of the rail frame 201, the folding frames 205 are in sliding fit with a first guide rod 108 fixed in the body 101, and meanwhile, a first elastic member 4 is sleeved on the first guide rod 108, so that the first elastic member 4 generates upward elastic force to the rail frame 201.

The fixed planar transducer 203 is fixed on the bottom side of the front end of the rail frame 201, and the movable planar transducer 202 slides on the bottom side of the rail frame 201; specifically, the first guide grooves 209 are symmetrically formed in the rail frame 201, the sliding plate 213 is fixedly mounted on the upper side of the movable planar transducer 202, and the side wall of the sliding plate 213 is rotatably connected with a plurality of groups of pulleys 214 matched with the first guide grooves 209, so that the movable planar transducer 202 can be guided to move, and the movable planar transducer 202 can only move along the diagonal of the body 101.

The middle of the rail frame 201 is provided with a shaft hole 211 for the rotation of the rotating unit 3; referring to fig. 6, 8, 11 and 12, the rotating unit 3 includes an axle tube 301, the axle tube 301 passes through and penetrates through the axle hole 211, a rail plate 302 perpendicular to the axle tube 301 is fixedly connected to the axle tube 301, the rail plate 302 is in an elongated circular shape, the rebounding detecting unit 5 slides on the rail plate 302, and a notch 310 is formed in one side of the axle tube 301 facing the rail plate 302, so that the rebounding detecting unit 5 can move into or out of the axle tube 301.

Referring to fig. 12, the rebound detecting unit 5 includes a sliding ring 501 sliding on the rail plate 302, the sliding ring 501 is coaxially fixed outside the resiliometer 502, and the cross section of the sliding ring 501 is an i-shaped structure, so that the resiliometer 502 can slide along the rail plate 302 and can rotate on the rail plate 302, and an inner bracket 311 capable of being matched with the sliding ring 501 is fixed in the shaft tube 301 to support the sliding ring 501.

Shaft tube 301 bottom is spacing through spacing ring 309, simultaneously on rail frame 201, carries out elastic support to shaft tube 301 through second elastic component 204 to make shaft tube 301 rotate on rail frame 201, and shaft tube 301 can move along its axis.

Specifically, the upper sides of the folding frames 205 are both fixed with second guide rods 206, the rail frame 201 is also fixed with second guide rods 206, wherein the angle between the second guide rods 206 on the rail frame 201 and the second guide rods 206 on the folding frames 205 is 90 °, the rail plate 302 is provided with support legs 313 corresponding to the second guide rods 206 one to one, the support legs 313 can be in sliding fit with the second guide rods 206, meanwhile, the second guide rods 206 are sleeved with trays 207, and the second elastic members 204 are sleeved on the second guide rods 206 and elastically support the trays 207; when the shaft tube 301 is not pressed, the top end of the second guide rod 206 does not penetrate into the sliding hole of the support leg 313, so that the tray 207 supports the shaft tube 301, and further forms a stable support for the rotation of the shaft tube 301; when the shaft tube 301 is rotated 90 degrees, at least two sets of the support legs 313 correspond to the second guide bar 206, so that when the shaft tube 301 is pressed downwards, the second guide bar 206 passes through the sliding holes of the support legs 313, thereby positioning the shaft tube 301, and ensuring that the shaft tube 301 is rotated 90 degrees each time, thereby ensuring that the movable planar transducer 202 moves 50mm (described later) each time.

Meanwhile, when the shaft tube 301 is pressed downwards, the second elastic piece 204 drives the rail frame 201 to move downwards, so that the resiliometer 502, the movable plane transducer 202 and the fixed plane transducer 203 all move downwards, when the movable plane transducer 202 and the fixed plane transducer 203 contact with a concrete detection surface, the shaft tube 301 moves downwards to continue moving the resiliometer 502 downwards, the resiliometer 502 can pass through the resiliometer detection port 109 formed in the body 101, or through a detection hole formed in the rail frame 201, or penetrate out of the body 101 from the shaft tube 301, and after the resiliometer 502 contacts with the concrete detection surface, the shaft tube 301 cannot be moved downwards continuously, so that the resiliometer 502, the movable plane transducer 202 and the fixed plane transducer 203 can be ensured to contact with the concrete detection surface, and the rebound detection value and the ultrasonic detection value of the concrete can be detected simultaneously; after waiting for the rebound detection value and the ultrasonic detection value to be stable, the shaft tube 301 is loosened, and then the rail frame 201 and the shaft tube 301 are respectively moved upwards to reset under the action of the first elastic member 4 and the second elastic member 204, so that the resiliometer 502, the movable plane transducer 202 and the fixed plane transducer 203 are respectively moved upwards to reset.

In order to improve the detection efficiency and avoid moving the movable planar transducer 202 after rotating the axle tube 301 every time, in the technical scheme, the axle tube 301 is in transmission fit with the movable planar transducer 202, so that the axle tube 301 rotates 90 degrees every time, the movable planar transducer 202 moves 50mm, and the rebound detection unit 5 is moved into the axle tube 301 and then moved out of the axle tube 301, then the axle tube 301 is rotated 90 degrees every time along the same rotation direction, and then the movable planar transducer 202 moves 50mm in the opposite direction to reset.

Specifically, the shaft tube 301 is in tooth transmission fit with the movable planar transducer 202; two parallel and different-surface racks 208 are fixed on the sliding plate 213, the racks 208 penetrate through the rail frame 201 through the second guide groove 210 and are located on the upper side of the rail frame 201, the outer side of the shaft tube 301 is coaxially connected with a gear ring 303 in a sliding manner, and the gear ring 303 can be switched between the two racks 208 and meshed with the two racks 303.

Specifically, notch 312 has been seted up to the central siphon 301 lateral wall, slide bar 304 has slided in the notch 312, slide bar 304 bottom respectively with ring gear 303 fixed connection, slide bar 304 top is fixed with wedge block 306, the sliding ring 501 bottom side is fixed with wedge ring 503, be provided with the arc type wedge face that can cooperate with wedge ring 503 on the wedge block 306, thereby when removing resilience detecting element 5 to central siphon 301 in, through the cooperation of wedge ring 503 with wedge block 306, can jack-up slide bar 304, and then make ring gear 303 rebound, mesh with a higher rack 208, realize the change of ring gear 303 meshing height, and then when rotating central siphon 301 with the syntropy once more, make movable planar transducer 202 along with the reverse direction removal of preceding removal.

Meanwhile, in the technical scheme, the distance between the two racks 208 is smaller than the height of the gear ring 303, so that the gear ring 303 is meshed with the two racks 208 simultaneously in the process of switching and meshing, and the movable planar transducer 202 is ensured to be relatively immobile.

Further, after the gear ring 303 switches the meshing height, in order to ensure that the gear ring 303 meshes with one of the racks 208 at the same meshing height, a clamping unit 6 capable of being clamped with the slide bar 304 is arranged outside the shaft tube 301 in the technical scheme.

Specifically, a bayonet 305 is formed on the sliding rod 304, referring to fig. 13 and 14, the clamping unit 6 includes a clamping seat 603 formed by fixing two half clamping seats, the clamping seat 603 is fixed on the outer side of the shaft tube 301, a slot cavity is formed in the clamping seat 603, a clamping frame 601 is slidably connected in the slot cavity, and a third elastic member 602 for applying an elastic force far away from the clamping seat 603 to the clamping frame 601 is arranged in the slot cavity; the card holder 601 is of an Arabic numeral 7-shaped structure, the clamping end and the contact end of the card holder penetrate through the card holder 603, the clamping end of the card holder can be clamped and matched with the card opening 305, and meanwhile, a limiting block 605 for limiting and guiding the card holder 601 is arranged in the groove cavity; after the sliding rod 304 moves upwards, the bayonet 305 corresponds to the clamping end of the clamping frame 601, and the clamping end of the clamping frame 601 is clamped into the bayonet 305 under the action of the third elastic member 602, so that clamping fixation of the sliding rod 304 is realized, and the gear ring 303 is stably positioned at a higher meshing height.

Meanwhile, in order to realize that the gear ring 303 moves down from a higher meshing height to a lower meshing height, the top block 103 is fixed on the machine cover 102, and a contact end of the clamping frame 601 is rotatably connected with a roller 604 in contact with the top block 103; after the shaft tube 301 rotates 360 degrees, the roller 604 contacts with the top block 103, the clamping frame 601 is jacked up, the clamping end of the clamping frame 601 is separated from the bayonet 305, and the gear ring 303 automatically moves downwards to reset under the action of gravity; to ensure that the toothed ring 303 moves down to engage with the lower rack 208, a fourth elastic member 314 is disposed in the notch 312 to apply a downward elastic force to the slide bar 304.

Further, in order to facilitate the control of the rotation of the shaft tube 301 by 90 ° each time, a knob 307 is fixed on the top end of the shaft tube 301, a pointer 308 is arranged on the knob 307, and the scale mark 106 is arranged on the upper side of the cover 102; meanwhile, an arc-shaped groove body 104 and a V-shaped guide opening 105 for guiding the resiliometer 502 are arranged on the cover 102.

For convenience of understanding, the ultrasonic detection point location and the resiliometer detection point location are embodied in an XY axis coordinate system, as shown in fig. 3, a black point is the ultrasonic detection point location, a blank point is the resiliometer detection point location, and the fixed planar transducer 203 is located at a (0, 0) point location; recording an ultrasonic detection point located in the interval (e, e) as a first ultrasonic point, recording an ultrasonic detection point located in the interval (f, f) and close to the point (100 ) as a second ultrasonic point, recording an ultrasonic detection point located in the interval (f, f) and close to the point (150 ) as a third ultrasonic point, wherein the distance between the first ultrasonic point and the point (0, 0) is 100mm, the distance between the second ultrasonic point and the point (0, 0) is 150mm, and the distance between the third ultrasonic point and the point (0, 0) is 200mm; meanwhile, the rebound detection points within the (g, g) interval, the (d, d) interval and the (g, d) interval are sequentially denoted as a first rebound point, a second rebound point, a third rebound point and a fifth rebound point, and the rebound detection point of the (100 ) point is denoted as a fourth rebound point.

During detection, the shaft tube 301 can be rotated clockwise or counterclockwise, and the shaft tube 301 is rotated counterclockwise in the embodiment; initially, the movable planar transducer 202 is located at the first ultrasonic point location, the resiliometer 502 is located at the first rebound point location, the shaft tube 301 is pressed at this time, the first ultrasonic point location is subjected to ultrasonic detection, and the first rebound point location is subjected to rebound detection.

After the axle tube 301 is loosened, the axle tube 301 is rotated by 90 degrees, the gear ring 303 is at a lower meshing height and is meshed with the lower rack 208, the movable planar transducer 202 moves to a second ultrasonic point position, the resiliometer 502 moves to a second rebound point position, then the axle tube 301 is pressed again, ultrasonic detection is performed on the second ultrasonic point position, and rebound detection is performed on the second rebound point position.

After the shaft tube 301 is loosened again, the shaft tube 301 is rotated by 90 degrees again, at this time, the gear ring 303 is still meshed with the lower rack 208, the movable planar transducer 202 is moved to the third ultrasonic point position, the resiliometer 502 is moved to the third rebound point position, the shaft tube 301 is pressed again, the third ultrasonic point position is subjected to ultrasonic detection, and the third rebound point position is subjected to rebound detection.

After axle tube 301 is loosened again, rebound detection unit 5 is moved into axle tube 301, resiliometer 502 is moved to a fourth rebound point position, and gear ring 303 is made to be at a higher meshing height, at this moment, movable planar transducer 202 is still at a third ultrasonic point position, axle tube 301 is pressed again, ultrasonic detection is performed on the third ultrasonic point position again, and rebound detection is performed on the fourth rebound point position.

Loosen central siphon 301 back once more, rotate central siphon 301 90 degrees once more, then make activity plane transducer 202 get back to second supersound point location, shift out central siphon 301 and remove to the board 302 tip of rail with resilience detecting element 5 again for resiliometer 502 removes to fifth resilience point location, presses central siphon 301 again, then carries out ultrasonic testing to second supersound point location once more, carries out resilience to fifth resilience point location and detects.

After shaft tube 301 is loosened again, shaft tube 301 is rotated 90 ° again so that active planar transducer 202 returns to the first ultrasonic point position, and resiliometer 502 returns to the first rebound point position, and ring gear 303 is reset to a lower mesh height; then, the shaft tube 301 can be pressed again or not pressed; if the axle tube 301 is pressed again, the first ultrasonic point location can be subjected to ultrasonic detection again, and springback detection is performed on the first springback point location, so that ultrasonic detection values of six groups of ultrasonic point locations and ultrasonic detection values of six groups of springback point locations are obtained, and thus compared with the situation that the axle tube is not pressed, the average value of the ultrasonic detection values of five groups of ultrasonic point locations and the average value of the ultrasonic detection values of five groups of springback point locations are obtained, the average value precision of the ultrasonic detection values of six groups of ultrasonic point locations is high, and similarly, the average value precision of the ultrasonic detection values of six groups of springback point locations is high, so that the precision of the concrete strength is effectively guaranteed.

The technical scheme also discloses a road and bridge concrete structure detection method, and with reference to fig. 2, the detection method comprises the following steps:

s1, stably placing a machine body 1 on concrete;

s2, pressing down the axle tube 301 until the rebound detection value and the ultrasonic detection value are stable, and then loosening the axle tube 301;

s3, rotating the shaft tube 301 twice, rotating the shaft tube 90 degrees each time, and performing the step S2 once after each rotation;

s4, moving the springback detection unit 5 to the shaft tube 301, and performing the step S2 again;

s5, after the shaft tube 301 is rotated by 90 degrees, the rebound detection unit 5 is moved out of the shaft tube 301 and moved to the end part of the rail plate 302, and then the step S2 is carried out again;

s6, after the shaft tube 301 is rotated by 90 degrees again, the step S2 is performed again.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a road and bridge concrete structure detection device which characterized in that: including organism (1), the ultrasonic testing unit (2) of slip in organism (1) and swing joint the rotary unit (3) on ultrasonic testing unit (2), still be provided with first elastic component (4) to ultrasonic testing unit (2) elastic action in organism (1), ultrasonic testing unit (2) are including rail frame (201) and the activity plane transducer (202) of slip on rail frame (201) that set up along organism (1) diagonal, rail frame (201) end fixing has fixed plane transducer (203) with activity plane transducer (202) complex, rotary unit (3) are including swing joint central siphon (301) on rail frame (201), be fixed with rail board (302) on central siphon (301), it has resilience detecting element (5) to slide on rail board (302), central siphon (301) and activity plane transducer (202) transmission cooperation, make every will, activity plane transducer (202) rotate 90, activity plane transducer (202) move 50mm, and resilience detecting unit (5) move out to the removal in the organism (1) and then the elastic component moves back along the elastic component (301) and the second is provided with the rotation central siphon (301) and then the elastic component (301) moves back along the central siphon (301) and move 50mm, then the elastic component (201), and pressing the axle tube (301) to enable the detection ends of the movable planar transducer (202), the fixed planar transducer (203) and the rebound detection unit (5) to penetrate out of the machine body (1) and to be in contact with the detection surface.

2. A road and bridge concrete structure detection device according to claim 1, characterized in that a folding frame (205) slidably connected with the machine body (1) is arranged on the rail frame (201), a second guide rod (206) is fixed on the folding frame (205), a tray (207) in contact with the rail plate (302) is sleeved on the second guide rod (206), and the second elastic member (204) is sleeved on the second guide rod (206) and performs an elastic action on the tray (207).

3. A road and bridge concrete structure detection device according to claim 1, characterized in that, two parallel and different-surface racks (208) are fixedly connected to the movable plane transducer (202), a gear ring (303) is coaxially and slidably connected to the shaft tube (301), and the gear ring (303) can be switched between the two racks (208) and meshed.

4. The road and bridge concrete structure detection device of claim 3, wherein a slide bar (304) is fixed on the gear ring (303), a clamping unit (6) for clamping the slide bar (304) is arranged on the shaft tube (301), and when the resilience detection unit (5) moves into the shaft tube (301), the slide bar (304) can move along the axial direction of the shaft tube (301) and is clamped with the clamping unit (6) fixed on the shaft tube (301), so that the gear ring (303) is engaged in a switching manner.

5. The road and bridge concrete structure detection device according to claim 4, wherein the clamping unit (6) comprises a clamping frame (601) and a third elastic member (602) having an elastic effect on the clamping frame (601), the sliding rod (304) is provided with a bayonet (305) capable of being clamped and matched with the clamping end of the clamping frame (601), the machine body (1) is further internally provided with a top block (103), and when the contact end of the clamping frame (601) is contacted with the top block (103), the clamping end of the clamping frame (601) is separated from the bayonet (305), so that clamping fixation of the sliding rod (304) is released.

6. The detection device for the concrete structure of the road and bridge as claimed in claim 4, wherein the rebound detection unit (5) comprises a slip ring (501) with an I-shaped cross section and a rebound tester (502) coaxially fixed on the slip ring (501), the slip ring (501) is slidably connected on the rail plate (302), a wedge ring (503) is arranged on one side of the slip ring (501), and a wedge block (306) capable of being matched with the wedge ring (503) is fixed on the slide rod (304).

7. The road and bridge concrete structure detection device of claim 6, wherein the machine body (1) comprises a machine body (101) and a machine cover (102), and an arc-shaped groove body (104) and a V-shaped guide opening (105) for guiding the resiliometer (502) are arranged on the machine cover (102).

8. The road and bridge concrete structure detection device according to claim 7, wherein a knob (307) is arranged at one end of the axle tube (301) penetrating out of the cover (102), a pointer (308) is arranged on the knob (307), and a scale mark (106) is arranged on the cover (102).

9. A detection method of a road and bridge concrete structure, which is suitable for the detection device of the road and bridge concrete structure of claim 1, and is characterized by comprising the following steps:

s1, stably placing a machine body (1) on concrete;

s2, pressing down the shaft tube (301) until the rebound detection value and the ultrasonic detection value are stable, and then loosening the shaft tube (301);

s3, rotating the shaft tube (301) twice, rotating the shaft tube 90 degrees each time, and performing the step S2 once after each rotation;

s4, moving the springback detection unit (5) to the shaft tube (301), and performing the step S2 again;

s5, after the axle tube (301) is rotated by 90 degrees, the springback detection unit (5) is moved out of the axle tube (301) and moved to the end part of the rail plate (302), and then the step S2 is carried out again;

s6, after the shaft tube (301) is rotated for 90 degrees again, the step S2 is performed again.