Concrete ultrasonic-rebound comprehensive detection survey area positioning device

Abstract

The application discloses a concrete ultrasonic rebound comprehensive detection measuring area positioning device and belongs to the technical field of bridge test detection. The device aims at the problem that the accurate positioning effect of a detection measuring area is poor when the sound velocity frequency value of a highway bridge concrete prefabricated member is measured, which leads to deviation of the detection result and consumption of a large amount of manpower and material resources. The device comprises two placement tracks which are in parallel distribution, the top surfaces of the two placement tracks are slidably connected with receiving frames, and the two side inner walls of the receiving frames are slidably penetrated with extension frames. Through the mutual cooperation of the extension mechanism, the unfolding mechanism, the moving mechanism and the turnover mechanism, the isohypse symmetrical positioning treatment of the laser transducer probe is realized. Through the reverse driving of the extension mechanism, the two sides of the laser transducer probe are in contact with and pressed against the concrete prefabricated member. The sound velocity frequency value is measured through the ultrasonic instrument, the positioning precision is greatly improved, the accuracy of the detection result is effectively ensured, and the degree of automation is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge test detection, and particularly relates to a concrete ultrasonic rebound comprehensive detection measurement area positioning device. BACKGROUND

[0002] The ultrasonic rebound comprehensive method refers to measuring sound and rebound values in the same measurement area of a component concrete by using an ultrasonic instrument and a rebound instrument, and then calculating the concrete strength in the measurement area by using an established strength formula. Compared with the single rebound method or the ultrasonic method, the ultrasonic rebound comprehensive method has the advantages of small influence of concrete age and water content, high test precision, wide application range, and the ability to comprehensively reflect the actual quality of structural concrete. At present, the ultrasonic rebound comprehensive method generally adopts three detection methods, namely, opposite measurement, angle measurement and plane measurement, which generally include the determination of the rebound value of the rebound instrument on the concrete and the determination of the sound speed frequency value by the ultrasonic instrument.

[0003] The ultrasonic rebound comprehensive detection is a common detection method for highway bridges at present. In order to ensure the detection accuracy of highway bridges, the opposite detection method is usually used to determine the sound speed frequency value. The left and right sides of the concrete prefabricated component need to be positioned in parallel to ensure that the two sides are in a symmetrical state to better guarantee the accuracy of the detection result. However, since the concrete prefabricated component cannot see the opposite side when determining the sound speed frequency value, it needs to be measured and calibrated in advance by manual measurement of the detection measurement area, and then the detection measurement area is selected. Then, two workers hold the laser transducer probe respectively, and position and fit the surface of the concrete prefabricated component in a parallel and symmetrical manner. Finally, the sound speed frequency value is determined by the ultrasonic instrument. The manual parallel determination of the sound speed frequency value generally has the following problems:

[0004] (1) When determining the sound speed frequency value of the concrete prefabricated component, the detection measurement area needs to be positioned and divided by the template line in advance, which consumes a lot of manpower and material resources. Moreover, when measuring, the workers on both sides of the concrete prefabricated component cannot see the opposite side, so it is difficult to ensure synchronization and accurate positioning when they perform parallel and symmetrical fitting test on the laser transducer probe in the detection measurement area, which may lead to large errors in detection and measurement, and thus result in deviation of the detection result.

[0005] (2) When the prefabricated component of the highway bridge is measured by the ultrasonic rebound comprehensive method, it is usually supported by sleepers, and there is a certain gap at the bottom. In order to improve the detection accuracy, an auxiliary tool can be used to pass through the gap between the sleepers. The workers on both sides of the concrete prefabricated component can measure the laser transducer probe in the detection measurement area synchronously, so as to improve the synchronization performance of the operation of the laser transducer probe and the accuracy of the positioning thereof. However, the workers on both sides still need to cooperate synchronously, and the requirement for the tacit understanding of the operation and cooperation is high.

[0006] Therefore, a concrete ultrasonic rebound comprehensive detection measurement area positioning device is needed to solve the problem of poor precision positioning effect of the detection measurement area when measuring the sound velocity frequency value of the highway bridge concrete prefabricated component in the prior art, resulting in deviation of the detection result and consumption of a large amount of manpower and material resources. SUMMARY

[0007] The present application aims to provide a concrete ultrasonic rebound comprehensive detection measurement area positioning device to solve the problems raised in the background art.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a concrete ultrasonic rebound comprehensive detection measurement area positioning device, comprising two parallel placement tracks, the top surface of the two placement tracks is slidably connected with a receiving frame, the two side inner walls of the receiving frame are slidably penetrated with extension frames, the bottom surface of the receiving frame is provided with an extension mechanism matched with the two extension frames, the two side walls of the two extension frames are rotatably connected with rotating discs, the end surfaces of the receiving frame are rotatably connected with rotating cover plates, the inner wall of the rotating disc close to the rotating cover plate is rotatably connected with an electric push rod, the output end of the electric push rod is fixed with a mounting block, the inner wall of the mounting block is provided with a laser transducer probe, the inner wall of the receiving frame is provided with an unfolding mechanism matched with the two electric push rods, the top surface outside of the two extension frames is provided with a limiting slot, each limiting slot is provided with a plug-in mechanism matched with the rotating cover plate, and the outer wall of one of the extension frames is provided with a turnover mechanism matched with the two rotating discs.

[0009] It should be noted in the scheme that the extension mechanism comprises an installation frame fixed at the center of the bottom surface of the receiving frame, the top surface of the installation frame is provided with a driving motor, the bottom surface of the receiving frame is slidably connected with two parallel extension rack rods, an extension gear coaxially fixed with the output end of the driving motor is arranged between the two extension rack rods, the two ends of the extension gear are respectively meshed with the two extension rack rods, the end portions of the two extension rack rods are fixed with moving push rods, and the outer side wall center of the moving push rod is fixed with an L-shaped rod between the bottom surface of the adjacent extension frame.

[0010] Further worth mentioning is that the unfolding mechanism comprises two guide sleeves in staggered distribution, the inner wall of each guide sleeve is slidably connected with a push rack rod, an unfolding gear is coaxially fixed with the output end of the driving motor between the two push rack rods, the two ends of the unfolding gear are respectively meshed with the two push rack rods, the end of each push rack rod is fixed with a moving block, the outer side wall of the moving block is fixed with a fixed sleeve, one end of the electric push rod is provided with a limiting rod fixed with the inner side wall of the rotating disc, the outer surface of the limiting rod is slidably sleeved with a push block, the outer surface of one end of the push block is hingedly connected with an unfolding frame with the outer surface of the rod body of the electric push rod, the inner side wall of the push block is matched with a guide slider movably connected with the limiting rod, the inner side wall of the guide slider is fixed with a fixed rod extending into the inside of the fixed sleeve, and the inside of the fixed sleeve is provided with a tension spring fixed with the opposite surfaces of the fixed rod and the moving block.

[0011] Further need to be explained is that the plug-in mechanism comprises a pulling block slidingly penetrating the limiting groove, one side of the rotating cover plate is provided with a plug-in groove matched with the pulling block, the top surface and the bottom surface of the storage frame are provided with arc-shaped grooves, the inside of each arc-shaped groove is provided with a stand column fixed with the surface of the rotating cover plate, the inner side of the rotating cover plate is provided with a clamping sleeve block matched with the stand column, and the clamping sleeve block is fixed with the outer end surface of the storage frame.

[0012] As a preferred embodiment, the turnover mechanism comprises two limit sleeves in symmetrical distribution, the top inner wall of the extension frame is fixed with the two limit sleeves, the inner wall of the limit sleeve is rotatably connected with a rotating shaft sleeve, the inside of the rotating shaft sleeve is inserted with a cylindrical rod, the outer end of the cylindrical rod is fixed with the inner surface of the rotating disc, the inner end outer surface of the two cylindrical rods is commonly slidably sleeved with a positioning sleeve rod, the outer surface of the guide slider is provided with a sector-shaped groove matched with the limiting rod, the outer surface of one of the rotating discs is fixed with a sector-shaped tooth disc, the outer side of the sector-shaped tooth disc is provided with a servo motor, the output end of the servo motor is coaxially fixed with a transmission gear, and the transmission gear is meshed with the sector-shaped tooth disc.

[0013] As a preferred embodiment, the lower side of the rotating cover plate is provided with a rotating mechanism matched with the extension rack rod, the rotating mechanism comprises rotating gears corresponding to and coaxially fixed with the two rotating cover plates, the inner end of each rotating gear is meshed with a moving rack rod, and the end of the moving rack rod is fixed with the adjacent moving push rod.

[0014] As a preferred implementation form, the upper part of the positioning sleeve rod is provided with a lifting mechanism matched with the two extension frames, the lifting mechanism comprises two symmetrically distributed slope blocks, the slope blocks are fixed with the side surfaces of the adjacent extension frames, the bottom outer surfaces of the two slope blocks are provided with jacking blocks in a fit manner, the top surface of the receiving frame is slidably penetrated by two symmetrically distributed lifting rods, the bottom ends of the two lifting rods are fixed with the top surface of the jacking block, the top ends of the two lifting rods are fixed with a lifting block, and the outer surface of the lifting rod is provided with a jacking spring fixed with the opposite surfaces of the jacking block and the receiving frame.

[0015] As a preferred implementation form, the vertical section of the jacking block is arranged in an isosceles trapezoidal shape, the contact surface of the jacking block and the slope block is arranged in a matching inclined surface, the lifting block comprises a lifting area at the central part and a resisting area at both ends, and the projection area of the resisting area is greater than that of the lifting area.

[0016] As a preferred implementation form, the track groove of the placement track is provided with a supporting sliding block fixed with the bottom surface of the receiving frame in a fit manner, the vertical section of the bottom of the supporting sliding block is arranged in an isosceles trapezoidal shape, a moving mechanism matched with the receiving frame is arranged between the two supporting sliding blocks, the moving mechanism comprises two symmetrically distributed L-shaped blocks, the two L-shaped blocks are fixed with the bottom surface of the receiving frame, the inner side wall of the placement track is provided with a moving groove matched with the L-shaped block, the outer wall of one end of the receiving frame close to the servo motor is fixed with a supporting block, the top surface of the supporting block is provided with a reduction motor, the output end of the reduction motor is coaxially fixed with a moving gear, the outer side wall of the placement track close to the reduction motor is fixed with a fixed rack rod, and the moving gear and the fixed rack rod are in meshing connection.

[0017] As a preferred implementation form, the top surface of the L-shaped block and the supporting sliding block is provided with a groove, and the vertical section length of the groove is matched with the sum of the vertical section lengths of the moving push rod and the moving rack rod.

[0018] Compared with the prior art, the positioning device for the concrete ultrasonic rebound comprehensive detection measurement area provided by the present application has at least the following beneficial effects:

[0019] (1) Through the synchronous cooperation of the extension mechanism, the unfolding mechanism and the moving mechanism, the synchronous extension opening of the two extension frames, the rotation opening of the two rotating cover plates and the synchronous horizontal rotation unfolding of the two electric push rods are carried out synchronously, and then the electric push rods at both ends are rotated into the limiting grooves through the turnover mechanism, so that the isometric symmetric positioning processing of the laser transducer probe is completed, finally the reverse driving of the extension mechanism makes the two laser transducer probes contact and press the concrete prefabricated part, and the determination of the sound velocity frequency value is completed through the ultrasonic instrument, which greatly improves the positioning precision, effectively guarantees the accuracy of the detection result, has high automation degree, and does not need to calibrate the detection area of the concrete prefabricated part in advance, effectively reduces the operation steps of the sound velocity frequency value determination, saves time and effort, and when positioning the laser transducer probe, two workers are not needed to be distributed on both sides of the concrete prefabricated part, which effectively reduces the labor consumption and greatly reduces the task amount of the workers.

[0020] (2) Through the setting of the moving mechanism, the concrete prefabricated part is automatically moved for sound velocity frequency value determination, so that multiple detection areas are accurately positioned and determined, further improving the automation degree, greatly shortening the time consumption of the workers in determining the sound velocity frequency value of multiple detection areas, and greatly improving the measurement efficiency.

[0021] (3) Through the setting of the lifting mechanism, the lifting block is lifted to facilitate the lifting and transferring of the storage frame, greatly improving the convenience of carrying and transferring, in addition, the slope block removes the slope extrusion of the jacking block, so that the top surface of the lifting block abuts against the bottom surface of the concrete prefabricated part, thereby improving the stability of the placement track and the storage frame placed between the sleeper gaps, and facilitating the subsequent determination of the sound velocity frequency value of the concrete prefabricated part. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of the present application;

[0023] Figure 2 It is the structure schematic diagram of the extension mechanism of the present application;

[0024] Figure 3 It is the local structure schematic diagram of the plug-in mechanism of the present application;

[0025] Figure 4 It is the local structure schematic diagram of the lifting mechanism of the present application;

[0026] Figure 5 It is the Figure 4 It is the enlarged structure schematic diagram of area A in the present application;

[0027] Figure 6The schematic view of the L-shaped block and the local structure of the moving groove of the application;

[0028] Figure 7 The schematic view of the Figure 6 The schematic view of the B area amplification structure of the application;

[0029] Figure 8 The schematic view of the Figure 6 The schematic view of the C area amplification structure of the application;

[0030] Figure 9 The schematic view of the local split structure of the limiting groove of the application;

[0031] Figure 10 The schematic view of the Figure 9 The schematic view of the D area amplification structure of the application;

[0032] Figure 11 The schematic view of the local structure of the tensioning spring of the application.

[0033] In the figure: 1, placement track; 2, storage frame; 3, extension frame; 4, extension mechanism; 41, mounting frame; 42, drive motor; 43, extension rack rod; 44, extension gear; 45, moving push rod; 46, L-shaped rod; 5, rotating disc; 6, rotating cover plate; 7, electric push rod; 8, mounting block; 9, laser transducer probe; 10, unfolding mechanism; 101, guide sleeve; 102, push rack rod; 103, unfolding gear; 104, moving block; 105, fixed sleeve; 106, limiting rod; 107, push block; 108, unfolding frame; 109, guide sliding block; 1010, fixed rod; 1011, tensioning spring; 11, limiting groove; 12, plug-in mechanism; 121, pulling block; 122, plug groove; 123, arc-shaped groove; 124, stand column; 125, clamping sleeve block; 13, overturning mechanism; 131, limiting sleeve; 132, rotating shaft sleeve; 133, cylindrical rod; 134, fan-shaped slot; 135, fan-shaped toothed disc; 136, servo motor; 137, transmission gear; 138, positioning sleeve rod; 14, rotating mechanism; 141, rotating gear; 142, moving rack rod; 15, pulling mechanism; 151, slope block; 152, jacking block; 153, pulling rod; 154, pulling block; 155, jacking spring; 16, supporting sliding block; 17, moving mechanism; 171, L-shaped block; 172, moving groove; 173, supporting block; 174, speed reducer; 175, moving gear; 176, fixed rack rod. DETAILED DESCRIPTION

[0034] The application will be further described below in conjunction with examples.

[0035] Example one: please refer to Figures 1-11The application provides a concrete ultrasonic rebound comprehensive detection measurement area positioning device, which comprises two parallel placement tracks 1, the top surfaces of the two placement tracks 1 are slidably connected with receiving frames 2, the inner walls of the two sides of the receiving frame 2 are slidably penetrated with extension frames 3, and the bottom surface of the receiving frame 2 is provided with extension mechanisms 4 matched with the two extension frames 3, wherein the extension mechanisms 4 are used for synchronously extending the two extension frames 3 outward in the receiving frame 2, so that the device is suitable for the determination of the sound velocity frequency value of concrete precast members with different thicknesses, and the practicability is improved.

[0036] The two sides of the two extension frames 3 are rotatably connected with rotating discs 5, the end surfaces of the receiving frame 2 are rotatably connected with rotating cover plates 6, the inner wall of the rotating disc 5 close to the rotating cover plate 6 is rotatably connected with an electric push rod 7, the output end of the electric push rod 7 is fixed with a mounting block 8, the inner wall of the mounting block 8 is provided with a laser transducer probe 9, and the inner wall of the receiving frame 2 is provided with unfolding mechanisms 10 matched with the two electric push rods 7, wherein the extension frame 3 close to the rotating cover plate 6 is provided with a through hole for the connection line of the laser transducer probe 9 to pass through, so that the electric wire connection process with the ultrasonic instrument is facilitated, the unfolding mechanisms 10 are arranged to be synchronously moved with the extension mechanisms 4, the electric push rod 7 is synchronously moved in the extension frame 3 while the extension frame 3 is extended, and the electric push rod 7 is horizontally rotated and unfolded in the process of gradually opening the rotating cover plate 6.

[0037] The outer sides of the top surfaces of the two extension frames 3 are provided with limiting grooves 11, and each limiting groove 11 is provided with a plug-in mechanism 12 matched with the rotating cover plate 6, wherein the extension frame 3 is arranged in a U shape, the rotating cover plate 6 is limited by the plug-in mechanism 12, the opening position of the extension frame 3 is closed, so that the receiving frame 2 and the extension frame 3 are in a relatively closed state when not in use, and the carrying process is facilitated.

[0038] The outer wall of one of the extension frames 3 is provided with a turnover mechanism 13 matched with the two rotating discs 5, wherein the turnover mechanism 13 is arranged to rotate the two rotating discs 5 and the electric push rod 7 in the vertical plane, so that the two laser transducer probes 9 are synchronously distributed on the two sides of the concrete precast member and are arranged in a symmetrical distribution at the same height, and the detection accuracy of the sound velocity frequency value is improved.

[0039] Specifically, when the concrete prefabricated part is measured for the sound velocity frequency value, the staff releases the plug-in limiting action of the plug-in mechanism 12 on the rotating cover plate 6, and then the laser transducer probe 9 is connected with the ultrasonic instrument through the connecting line, and then the placement track 1 is placed in the gap between the sleepers and the two placement tracks 1 are placed on both sides of the concrete prefabricated part, so that the centers of the two placement tracks 1 are located in the same position as the center of the concrete prefabricated part, thereby completing the positioning and installation of the placement track 1.

[0040] Further as shown in Figure 2 、 Figure 3 and Figure 8 , specifically, the extension mechanism 4 includes an installation frame 41 fixed at the center of the bottom surface of the receiving frame 2, the top surface of the installation frame 41 is provided with a driving motor 42, the bottom surface of the receiving frame 2 is slidably connected with two parallel extension rack rods 43, an extension gear 44 coaxially fixed with the output end of the driving motor 42 is arranged between the two extension rack rods 43, the two ends of the extension gear 44 are respectively meshed with the two extension rack rods 43, a moving push rod 45 is fixed at the end of each of the two extension rack rods 43, and an L-shaped rod 46 is fixed between the center of the outer side wall of the moving push rod 45 and the bottom surface of the adjacent extension frame 3, wherein the driving motor 42 is driven to drive the extension gear 44 to rotate synchronously, and then the extension gear 44 and the extension rack rod 43 are reversely meshed and transmitted synchronously, so that the two extension frames 3 are synchronously extended outward in the receiving frame 2, so that the ends of the extension frames 3 are located outside the concrete prefabricated part, thereby facilitating the subsequent measurement of the sound velocity frequency value.

[0041] Further as shown in Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 and Figure 10As shown, it is worth noting that the expansion mechanism 10 includes two misaligned guide sleeves 101, the inner wall of each guide sleeve 101 is slidably connected with a push rack rod 102, a expansion gear 103 is coaxially fixed with the output end of the drive motor 42 and arranged between the two push rack rods 102, the two ends of the expansion gear 103 are meshingly connected with the two push rack rods 102 respectively, the end of each push rack rod 102 is fixed with a moving block 104, the outer side wall of the moving block 104 is fixed with a fixed sleeve 105, one end of the electric push rod 7 is provided with a limiting rod 106 fixed with the inner side wall of the rotating disc 5, the outer surface of the limiting rod 106 is slidably sleeved with a push block 107, the outer surface of one end of the push block 107 is hingedly connected with the outer surface of the rod body of the electric push rod 7, the inner side wall of the push block 107 is abuttingly provided with a guide sliding block 109 movably connected with the limiting rod 106, the inner side wall of the guide sliding block 109 is fixed with a fixed rod 1010 extending into the inside of the fixed sleeve 105, and the inside of the fixed sleeve 105 is provided with a tension spring 1011 fixed with the opposite faces of the fixed rod 1010 and the moving block 104.

[0042] It is worth noting that the power sources of the expansion gear 103 and the extension gear 44 are both transmitted by the drive motor 42, and since the pitch circle diameter of the expansion gear 103 is obviously smaller than that of the extension gear 44, the displacement speed of the extension rack rod 43 on the same side is obviously smaller than that of the push rack rod 102, in addition, when the extension rack rod 43 drives the extension frame 3, the electric push rod 7, the limiting rod 106 and the fixed rod 1010 to move outward synchronously, it exerts an outward stretching force on the tension spring 1011, while when the push rack rod 102 drives the moving block 104 and the fixed sleeve 105 to move outward synchronously, it drives the tension spring 1011 to move outward as a whole and generates a certain degree of compression treatment, since the moving speed of the push rack rod 102 is obviously greater than that of the extension rack rod 43, at this time the push rack rod 102 drives the moving block 104, the fixed sleeve 105, the fixed rod 1010, the guide sliding block 109 and the push block 107 to slide on the outer surface of the limiting rod 106, so that the push block 107 gradually reduces the distance between the rotating disc 5, so that the electric push rod 7 rotates horizontally outward on the rotating disc 5 through the inclined transmission of the expansion frame 108, so that the electric push rod 7 drives the mounting block 8 and the laser transducer probe 9 to rotate horizontally and expand from the extension frame 3.

[0043] Further as Figure 3 , Figure 8 and Figure 10As shown, it is worth noting that the plug-in mechanism 12 includes a pull block 121 sliding through the limiting slot 11, one side of the rotating cover plate 6 is provided with a plug-in slot 122 matched with the pull block 121, and the top and bottom surfaces of the receiving frame 2 are provided with arc-shaped grooves 123, the inside of each arc-shaped groove 123 is provided with a stand column 124 fixed to the surface of the rotating cover plate 6, the inner side of the rotating cover plate 6 is provided with a sleeve block 125 matched with the stand column 124, and the sleeve block 125 is fixed to the outer end surface of the receiving frame 2, wherein the pull block 121 is plugged with the plug-in slot 122, so that the rotating cover plate 6 is limited, thereby completing the relative closed shielding of the extension frame 3, and the arrangement of the arc-shaped groove 123 and the stand column 124 enables the rotating cover plate 6 to be in full contact with the arc-shaped groove 123 when the extension frame 3 is closed, thereby improving the stability of the rotating cover plate 6 during the closing process to a certain extent, and the arrangement of the sleeve block 125 enables the stand column 124 to be rotated with the rotating cover plate 6, so that the rotating cover plate 6 is limited when it is vertically distributed with the end surface of the receiving frame 2, thereby preventing the rotating cover plate 6 from rotating.

[0044] Further as Figure 1 、 Figure 3 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 11 As shown, it is worth noting that the flip mechanism 13 includes two limiting sleeves 131 symmetrically distributed, the two limiting sleeves 131 are respectively fixed to the top inner wall of the extension frame 3, the inner wall of the limiting sleeve 131 is rotatably connected with a rotating shaft sleeve 132, the inside of the rotating shaft sleeve 132 is plugged with a cylindrical rod 133, the outer end of the cylindrical rod 133 is fixed to the inner surface of the rotating disc 5, the inner end and outer surface of the two cylindrical rods 133 are commonly slidingly sleeved with a positioning sleeve rod 138, the outer surface of the guide sliding block 109 is provided with a sector-shaped slot 134 matched with the limiting rod 106, and the outer surface of one of the rotating discs 5 is fixed with a sector-shaped tooth disc 135, the outer side of the sector-shaped tooth disc 135 is provided with a servo motor 136, the output end of the servo motor 136 is coaxially fixed with a transmission gear 137, and the transmission gear 137 is meshingly connected with the sector-shaped tooth disc 135, wherein the transmission gear 137 is driven to rotate by the servo motor 136, and the transmission gear 137 is meshingly connected with the sector-shaped tooth disc 135, so that the connected rotating disc 5 drives the electric push rod 7 to rotate in the vertical plane, and the positioning sleeve rod 138 is connected, so that the rotating cylindrical rod 133 drives the other cylindrical rod 133 to rotate in the limiting sleeve 131 through the rotating shaft sleeve 132, thereby driving the other rotating disc 5 to synchronously rotate, thereby effectively reducing the power source of the rotating disc 5.

[0045] It is worth noting that when the extension mechanism 4 drives the two extension frames 3 to move outward in the storage frame 2, the cylindrical rods 133 at both ends slide outward in the rotating shaft sleeve 132, and the inner ends of the two cylindrical rods 133 move synchronously in the positioning sleeve rod 138 to the two sides, thereby improving the stability of the two extension frames 3 during synchronous reverse outward movement to some extent; when the turnover mechanism 13 performs vertical direction turnover movement, the limiting rod 106 and the pushing block 107 in the unfolding mechanism 10 rotate to the bottom end in the fan-shaped groove 134 on the guide sliding block 109, so that the rotating disc 5 drives the electric push rod 7 to perform vertical rotation without interference from the unfolding mechanism 10.

[0046] Example two: on the basis of example one, according to Figure 2 As shown, it is worth noting that the lower part of the rotating cover plate 6 is provided with a rotating mechanism 14 matched with the extension rack rod 43, the rotating mechanism 14 includes rotating gears 141 corresponding to the two rotating cover plates 6 and coaxially fixed, the inner ends of the two rotating gears 141 are all engaged with the moving rack rod 142, and the end of the moving rack rod 142 is fixed with the adjacent moving push rod 45, wherein when the extension frame 3 is fully extended in the storage frame 2, the moving rack and the rotating gear 141 are sequentially in the state of moving away, engaging transmission and approaching non-engaging, thereby ensuring that the rotating cover plate 6 is in a vertical ninety-degree open state when the extension frame 3 is not fully extended.

[0047] It is worth noting that after the plug-in mechanism 12 removes the limiting effect on the rotating cover plate 6, the moving rack rod 142 moves synchronously with the extension rack rod 43 and is in meshing transmission with the rotating gear 141, compared with the end of the electric push rod 7 in example one being pressed to open the rotating cover plate 6 during horizontal rotation, at this time the opening degree of the rotating cover plate 6 is less than ninety degrees, the setting of the rotating mechanism 14 effectively combines the opening of the rotating cover plate 6 with the movement of the extension mechanism 4, so that the rotating cover plate 6 is rotated and opened through the stand 124 and the sleeve block 125, thereby ensuring the opening stability of the rotating cover plate 6; when the extension frame 3 moves synchronously and reversely inward, the moving rack rod 142 and the rotating gear 141 are in close non-engaging state when the laser transducer probe 9 contacts and presses the surface of the concrete prefabricated part, thereby avoiding that the rotating cover plate 6 of the concrete prefabricated part is not reversely rotated and separated from the sleeve block 125 when the sound speed frequency value is measured.

[0048] Example three: on the basis of example one, according to Figure 5 , Figure 6 and Figure 8As shown, and particularly described, the upper of the positioning sleeve rod 138 is provided with a lifting mechanism 15 matched with the two extension frames 3, the lifting mechanism 15 includes two symmetrically distributed slope blocks 151 fixed with the side surface of the adjacent extension frame 3, the bottom outer surface of the two slope blocks 151 is abutted with a jacking block 152, the top surface of the receiving frame 2 is slidably penetrated by two symmetrically distributed lifting rods 153, the bottom end of the two lifting rods 153 is fixed with the top surface of the jacking block 152, the top end of the two lifting rods 153 is commonly fixed with a lifting block 154, the outer surface of the lifting rod 153 is provided with a jacking spring 155 fixed with the opposite surface of the jacking block 152 and the receiving frame 2, the vertical section of the jacking block 152 is arranged in isosceles trapezoidal shape, the contact surface of the jacking block 152 and the slope block 151 is arranged in a matching inclined surface, the lifting block 154 includes a lifting area at the central position and a resisting area at both ends, the projection area of the resisting area is larger than that of the lifting area, wherein, since the extension frame 3 is in a relatively closed state through the plug-in mechanism 12, the slope block 151 performs inclined extrusion on the jacking block 152, so that the jacking spring 155 is in a stretched state and stably placed in the receiving frame 2, at this time, the lifting block 154 is lifted, so as to facilitate lifting and transferring the receiving frame 2, greatly improving the convenience of carrying and transferring, in addition, when the extension frame 3 is completely extended and opened, the slope block 151 releases the inclined extrusion on the jacking block 152, so that the jacking spring 155 is reset by the elastic force, so that the jacking block 152 drives the lifting rod 153 and the lifting block 154 to move upward synchronously, so that the top surface of the lifting block 154 abuts against the bottom surface of the concrete prefabricated part, thereby improving the stability of the placement track 1 and the receiving frame 2 placed between the sleeper gaps, and facilitating the subsequent determination of the sound speed frequency value of the concrete prefabricated part.

[0049] Embodiment four: on the basis of embodiment three, according to Figure 1 、 Figure 3 、 Figure 5 and Figure 11As shown, it is worth pointing out that the track groove of the placing track 1 is provided with a support sliding block 16 fixed with the bottom surface of the receiving frame 2, the vertical section of the bottom of the support sliding block 16 is isosceles trapezoidal, a moving mechanism 17 cooperating with the receiving frame 2 is arranged between the two support sliding blocks 16, the moving mechanism 17 includes two symmetrically distributed L-shaped blocks 171, both of which are fixed with the bottom surface of the receiving frame 2, the inner side wall of the placing track 1 is provided with a moving groove 172 matched with the L-shaped block 171, the outer wall of one end of the receiving frame 2 close to the servo motor 136 is fixed with a support block 173, the top surface of the support block 173 is installed with a speed reducer 174, the output end of the speed reducer 174 is coaxially fixed with a moving gear 175, the outer side wall of the placing track 1 close to the speed reducer 174 is fixed with a fixed rack rod 176, the moving gear 175 and the fixed rack rod 176 are meshed and connected, wherein, the arrangement of the moving mechanism 17, after the electric push rod 7 and the laser transducer probe 9 are horizontally unfolded and vertically turned over, the receiving frame 2 is driven by the speed reducer 174 and is smoothly moved on the placing track 1 through the meshing transmission of the moving gear 175 and the fixed rack rod 176, so as to facilitate the positioning and measurement of different detection areas.

[0050] Further as shown in Figure 1 、 Figure 2 and Figure 3 , it is worth pointing out that the top surface of the L-shaped block 171 and the support sliding block 16 is provided with a groove, the vertical section length of the groove is matched with the sum of the vertical section length of the moving push rod 45 and the moving rack rod 142, wherein, the arrangement of the groove makes the moving push rod 45 and the moving rack rod 142 drive the extension frame 3 to move, and the groove has a certain guiding and limiting effect, thereby further improving the stability of the extension frame 3 in the receiving frame 2.

[0051] The method has the following working process: when the concrete prefabricated part is measured, first, the pulling block 121 is pulled out of the slot 122 until it is fully opened, the limiting action of the rotating cover plate 6 is released, and the connecting wire of the laser transducer probe 9 is connected with the ultrasonic instrument, then the thickness of the concrete prefabricated part is measured by the ruler, then the two placement tracks 1 are passed under the sleeper gap until the centers of the two placement tracks 1 are aligned with the center of the concrete prefabricated part, at this time, the driving motor 42 is driven to drive the extension frames 3 on both sides to move synchronously in the opposite direction until the ends of the extension frames 3 are located on both sides of the concrete prefabricated part, when the extension frames 3 are fully extended, the rotating cover plates 6 at both ends are opened synchronously by 90 degrees, and the unfolding mechanism 10 moves synchronously with the extension mechanism 4, at the same time when the rotating cover plates 6 are opened, the electric push rods 7 and the laser transducer probes 9 are fully opened in the horizontal direction, then the driving of the turnover mechanism 13 drives the electric push rods 7 and the laser transducer probes 9 at both ends to rotate synchronously, so that the ends of the electric push rods 7 are rotated into the limiting grooves 11, thereby completing the synchronous and symmetrical positioning of the laser transducer probes 9 at both ends, finally, the driving motor 42 is reversely rotated, the extension frames 3 on both sides move synchronously in the opposite direction, the push rack rods 102, the moving blocks 104 and the fixed sleeves 105 in the unfolding mechanism 10 are reset, at this time, the moving blocks 104 drive the tension springs 1011 to stretch inward, and the limiting grooves 11 limit the electric push rods 7, at this time, the unfolding frames 108 and the push blocks 107 are in the stable position of the limiting rods 106, at this time, the laser transducer probes 9 on the electric push rods 7 are still perpendicular to the top surface of the storage frame 2, at this time, the probe of the laser transducer is pressed against the surface of the concrete prefabricated part, and the ultrasonic instrument can measure the sound velocity frequency value, and the rebound value of the concrete prefabricated part is measured by the rebound instrument, thereby completing the concrete ultrasonic comprehensive detection process.

[0052] In addition, the two electric push rods 7 are provided, which are synchronously driven to adjust the height of the laser transducer probe 9 on the rotating disc 5, thereby adaptively adjusting the detection area of the concrete prefabricated part, greatly improving the applicability, and the movement mechanism 17 is provided to automatically move the concrete prefabricated part to accurately position and measure multiple detection areas.

[0053] According to the above working process can be known: by removing the plug-in mechanism 12 on the rotating cover plate 6 limiting effect, after connecting the laser transducer probe 9 and ultrasonic instrument, through the center positioning processing of the placement track 1, then through the synchronous action of the extension mechanism 4, unfolding mechanism 10 and moving mechanism 17, the synchronous extension of the two extension frame 3, the rotation of the two rotating cover plate 6 and the synchronous horizontal rotation of the two electric push rod 7 are carried out synchronously, and then the two ends of the electric push rod 7 are rotated to the limiting groove 11 by the turnover mechanism 13, so as to complete the equal-height symmetrical positioning processing of the laser transducer probe 9, finally the reverse drive of the extension mechanism 4 makes the two sides of the laser transducer probe 9 contact and press the concrete prefabricated part, and the ultrasonic instrument is used to complete the determination of the sound velocity frequency value, which greatly improves the positioning accuracy, effectively guarantees the accuracy of the detection result, has high automation degree, and does not need to detect the concrete prefabricated part in advance. The calibration of the detection area effectively reduces the operation steps of the sound velocity frequency value determination, saves time and effort, and when positioning the laser transducer probe 9, two workers are not needed to be distributed on both sides of the concrete prefabricated part, which effectively reduces the labor consumption and greatly reduces the task amount of the workers.

[0054] The setting of the moving mechanism 17 makes the concrete prefabricated part automatically move during the sound velocity frequency value determination, so as to accurately position and determine multiple detection areas, further improve the automation degree, greatly shorten the time consumed by the workers in measuring the sound velocity frequency value of multiple detection areas, and greatly improve the measurement efficiency.

[0055] The electric push rod 7, the drive motor 42, the servo motor 136 and the reduction motor 174 can be purchased in the market, and the electric push rod 7, the drive motor 42, the servo motor 136 and the reduction motor 174 are all equipped with power supply, which belongs to mature technology in the field and has been fully disclosed, so the description will not be repeated.

Claims

1. A concrete ultrasonic rebound integrated testing area positioning device, comprising two parallel placement tracks (1), wherein a storage frame (2) is slidably connected to the top surface of the two placement tracks (1), characterized in that, The storage frame (2) has extension frames (3) that slide through its inner walls on both sides. The bottom surface of the storage frame (2) is provided with an extension mechanism (4) that cooperates with the two extension frames (3). The two side walls of the two extension frames (3) are rotatably connected to a rotating disk (5). The two end faces of the storage frame (2) are rotatably connected to a rotating cover plate (6). The rotating disk (5) is rotatably connected to an electric push rod (7) near the inner wall of the rotating cover plate (6). The output end of the electric push rod (7) is fixed with a mounting block (8). The inner wall of the mounting block (8) is provided with a laser transducer probe (9), the inner wall of the storage frame (2) is provided with an unfolding mechanism (10) that cooperates with two electric push rods (7), the outer side of the top surface of the two extension frames (3) is provided with a limiting groove (11), each limiting groove (11) is provided with a plugging mechanism (12) that cooperates with the rotating cover plate (6), and the outer wall of one of the extension frames (3) is provided with a flipping mechanism (13) that cooperates with the two rotating disks (5). The extension mechanism (4) includes a mounting frame (41) fixed at the center of the bottom surface of the storage frame (2), and a drive motor (42) is mounted on the top surface of the mounting frame (41). The unfolding mechanism (10) includes two staggered guide sleeves (101). Each guide sleeve (101) has a push rack rod (102) slidably connected to its inner wall. An unfolding gear (103) is provided between the two push rack rods (102) and is coaxially fixed to the output end of the drive motor (42). The two ends of the unfolding gear (103) are respectively meshed with the two push rack rods (102). A moving block (104) is fixed to the end of each of the two push rack rods (102). A fixing sleeve (105) is fixed to the outer wall of the moving block (104). One end of the electric push rod (7) is fixed to the inner wall of the rotating disk (5). A fixed limiting rod (106) is provided, and a pushing block (107) is slidably sleeved on the outer surface of the limiting rod (106). An unfolding frame (108) is hinged between the outer surface of one end of the pushing block (107) and the outer surface of the rod body of the electric push rod (7). A guide slider (109) is fitted to the inner side wall of the pushing block (107) and is movably connected to the limiting rod (106). A fixing rod (1010) extending into the inside of the fixing sleeve (105) is fixed on the inner side wall of the guide slider (109). A tension spring (1011) is provided inside the fixing sleeve (105) and is fixed to the opposite face of the fixing rod (1010) and the moving block (104). The flipping mechanism (13) includes two symmetrically distributed limiting sleeves (131). The two limiting sleeves (131) are respectively fixed to the top inner wall of the extension frame (3). The inner wall of the limiting sleeve (131) is rotatably connected to a rotating shaft sleeve (132). A cylindrical rod (133) is inserted into the inside of the rotating shaft sleeve (132). The outer end of the cylindrical rod (133) is fixed to the inner surface of the rotating disk (5). The outer surfaces of the inner ends of the two cylindrical rods (133) slide together. A positioning sleeve rod (138) is provided. The outer surface of the guide slider (109) is provided with a fan-shaped groove (134) that cooperates with the limiting rod (106). A fan-shaped gear disk (135) is fixed on the outer surface of one of the rotating disks (5). A servo motor (136) is provided on the outer side of the fan-shaped gear disk (135). A transmission gear (137) is coaxially fixed at the output end of the servo motor (136). The transmission gear (137) is meshed with the fan-shaped gear disk (135).

2. The concrete ultrasonic rebound integrated testing and measurement area positioning device according to claim 1, characterized in that: The extension mechanism (4) also includes two parallel extension racks (43), which are slidably disposed on the bottom surface of the storage frame (2). An extension gear (44) is provided between the two extension racks (43) and is coaxially fixed to the output end of the drive motor (42). The two ends of the extension gear (44) are respectively meshed with the two extension racks (43). A movable push rod (45) is fixed at the end of each of the two extension racks (43). An L-shaped rod (46) is fixed between the center of the outer side wall of the movable push rod (45) and the bottom surface of the adjacent extension frame (3).

3. The concrete ultrasonic rebound integrated testing and measurement area positioning device according to claim 2, characterized in that: The insertion mechanism (12) includes a pull block (121) that slides through the limiting groove (11). A slot (122) that cooperates with the pull block (121) is provided on one side of the rotating cover plate (6). An arc-shaped groove (123) is provided on the top and bottom surfaces of the storage frame (2). A column (124) that is fixed to the surface of the rotating cover plate (6) is provided inside each arc-shaped groove (123). A sleeve block (125) that cooperates with the column (124) is provided on the inner side of the rotating cover plate (6). The sleeve block (125) is fixed to the outer end face of the storage frame (2).

4. The concrete ultrasonic rebound integrated testing and measurement area positioning device according to claim 2, characterized in that: Below the rotating cover plate (6) is a rotating mechanism (14) that cooperates with the extended rack rod (43). The rotating mechanism (14) includes rotating gears (141) that correspond one-to-one with the two rotating cover plates (6) and are fixed coaxially. The inner ends of the two rotating gears (141) are meshed with movable rack rods (142). The end of the movable rack rod (142) is fixed to the adjacent movable push rod (45).

5. The concrete ultrasonic rebound integrated testing and measurement area positioning device according to claim 4, characterized in that: Above the positioning sleeve (138) is a lifting mechanism (15) that cooperates with the two extension frames (3). The lifting mechanism (15) includes two symmetrically distributed slope blocks (151). The slope blocks (151) are fixed to the side of the adjacent extension frames (3). The bottom outer surfaces of the two slope blocks (151) are fitted with lifting blocks (152). The top surface of the storage frame (2) is slidably connected to two symmetrically distributed lifting rods (153). The bottom ends of the two lifting rods (153) are fixed to the top surface of the lifting blocks (152). The top ends of the two lifting rods (153) are jointly fixed with lifting blocks (154). The outer surface of the lifting rods (153) is provided with lifting springs (155) that are fixed to the opposite surfaces of the lifting blocks (152) and the storage frame (2).

6. The concrete ultrasonic rebound integrated testing and measurement area positioning device according to claim 5, characterized in that: The vertical cross section of the lifting block (152) is arranged in an isosceles trapezoidal shape. The contact surface between the lifting block (152) and the slope block (151) is arranged in a matching inclined plane. The lifting block (154) includes a lifting area located in the center and a contact area located at both ends. The projected area of ​​the contact area is larger than the projected area of ​​the lifting area.

7. The concrete ultrasonic rebound integrated testing and measurement area positioning device according to claim 4, characterized in that: The placement track (1) has a support slider (16) fitted into the track groove and fixed to the bottom surface of the storage frame (2). The bottom vertical cross section of the support slider (16) is an isosceles trapezoid. A moving mechanism (17) cooperating with the storage frame (2) is provided between the two support sliders (16). The moving mechanism (17) includes two symmetrically distributed L-shaped blocks (171). Both L-shaped blocks (171) are fixed to the bottom surface of the storage frame (2). The inner sidewall of the placement track (1) has a groove that is fitted into the storage frame (2). The L-shaped block (171) is adapted to the moving slot (172). The storage frame (2) is fixed with a support block (173) on the outer wall of one end near the servo motor (136). A reduction motor (174) is installed on the top surface of the support block (173). A moving gear (175) is coaxially fixed at the output end of the reduction motor (174). A fixed rack rod (176) is fixed on the outer wall of the placement track (1) near the reduction motor (174). The moving gear (175) and the fixed rack rod (176) are meshed together.

8. The concrete ultrasonic rebound integrated testing and measurement area positioning device according to claim 7, characterized in that: The top surfaces of the L-shaped block (171) and the supporting slider (16) are both provided with grooves, and the vertical cross-sectional length of the grooves is adapted to the sum of the vertical cross-sectional lengths of the movable push rod (45) and the movable rack rod (142).

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