A nondestructive testing device for reinforced concrete structure defects

Abstract

The present invention relates to the technical field of concrete detection, and specifically to a nondestructive detection device for reinforced concrete structural defects, comprising a detection base, a detection component and a deceleration component, wherein the detection component is fixedly arranged on the top of the detection base for equally spaced detection of reinforced concrete, and the deceleration component is fixedly arranged on the top of the detection base for decelerating the downward movement of the detection component. Defect detection is performed on a large reinforced concrete casting by pushing the device to move, and at the same time, during the movement of the device, the detection component continuously pushes the ultrasonic detection probe upward, so that during the movement of the device, it is ensured that the bottom of the ultrasonic detection probe does not rub against the upper end of the reinforced concrete casting, thereby avoiding damage to the ultrasonic detection probe.

Description

Technical Field

[0001] The invention relates to the technical field of concrete detection, in particular to a nondestructive detection device for reinforced concrete structural defects. Background Art

[0002] Ultrasonic testing uses the characteristics of sound waves propagating in concrete to detect defects and hidden dangers in concrete structures. When ultrasonic waves pass through concrete, they will be affected by the internal structure of concrete. For example, defects will cause sound waves to be reflected, refracted and scattered. Therefore, the quality and defects of the concrete structure can be judged by detecting the characteristics of sound waves.

[0003] According to a Chinese patent with application publication number CN119064455A, a non-destructive detection device for reinforced concrete structural defects is disclosed. By setting a veneer receiving plate, the reflected signal received will not be disturbed by other sounds transmitted from the ground, thereby ensuring the accuracy of the detection work. This detection device is difficult to apply to the detection of reinforced concrete castings with larger volumes. At the same time, when the device switches the detection position, the probe is prone to friction with the concrete surface. Over time, it is easy to cause damage to the probe. For this reason, we propose a non-destructive detection device for reinforced concrete structural defects to solve the above technical problems. Summary of the invention

[0004] The present invention provides the following technical solution: a nondestructive detection device for reinforced concrete structure defects, comprising:

[0005] Detection base;

[0006] The detection component is fixed on the top of the detection base and is used for equal spacing detection of reinforced concrete;

[0007] The deceleration component is fixed on the top of the detection base and is used to decelerate the downward movement of the detection component.

[0008] As a preferred solution of the present invention, the detection component includes:

[0009] The bearing seat is fixedly installed on the top of the detection base symmetrically front and back;

[0010] A connecting plate, fixedly mounted on the top of the bearing seat, and the number is two;

[0011] A transverse plate, fixedly mounted on one end of the two connecting plates;

[0012] Linear bearings, front and rear distributed and fixedly mounted on the top of the horizontal plate;

[0013] The telescopic rods are slidably mounted inside the linear bearing, and the number of the telescopic rods is two;

[0014] An assembly seat is fixedly mounted on the bottom of the two telescopic rods, and a thread hole is formed through the bottom of the assembly seat, and the thread hole is located between the two telescopic rods;

[0015] The ultrasonic detection probe is installed inside the tooth hole by threaded fastening.

[0016] As a preferred solution of the present invention, the detection component also includes:

[0017] A fastening block is fixedly mounted on the upper outer wall of the two telescopic rods and is located at the bottom of the transverse plate;

[0018] The driven shaft is rotatably mounted between the front and rear bearing seats through bearings;

[0019] The rocker arm is fixedly mounted symmetrically front and rearward on the middle of the outer wall of the driven shaft;

[0020] The derivation wheel is rotatably mounted between the front and rear rocker arms and away from one end of the driven shaft, and the position of the derivation wheel corresponds to the position of the fastening block.

[0021] As a preferred solution of the present invention, the detection component also includes:

[0022] The driving wheel shaft is rotatably mounted inside the front and rear bearing seats through bearings and is arranged parallel to the driven shaft. The driving wheel shaft is located at the bottom of the driven shaft and movably passes through the front and back sides of the two bearing seats.

[0023] A small pulley is fixedly mounted on the outer wall of the driving wheel shaft and close to one end of one of the bearing seats;

[0024] The large pulley is fixedly mounted on the outer wall of the driven shaft and corresponds to the position of the small pulley;

[0025] The toothed belt is sleeved on the periphery of the small pulley and the large pulley;

[0026] The traveling wheels are fixedly mounted on both ends of the outer wall of the driving wheel shaft.

[0027] As a preferred solution of the present invention, the deceleration component comprises:

[0028] The retarder cylinder is fixedly mounted on the top of the detection base in front and back distribution and is concentric with the center of the telescopic rod. The telescopic rod slides through the interior of the retarder cylinder, and the interior of the retarder cylinder is filled with damping oil;

[0029] A deceleration piston is fixedly mounted on the outer wall of the telescopic rod, and the outer wall of the deceleration piston is slidably connected to the inner wall of the deceleration cylinder;

[0030] A conical oil-draining hole is provided at the top of the deceleration piston and extends through to the bottom of the deceleration piston, and the number of the conical oil-draining hole is at least one;

[0031] The conical flow limiting valve block is movably arranged inside the conical oil drain hole, and the specification is adapted to the specification of the conical oil drain hole;

[0032] A guide frame, fixedly mounted on the bottom of the retarder piston;

[0033] The No. 1 spring is fixedly installed between the top of the guide frame and the bottom of the conical oil-draining hole.

[0034] As a preferred solution of the present invention, the deceleration component further includes:

[0035] A guide hole is formed through the top of the guide frame and is concentric with the center of the conical flow limiting valve block;

[0036] The guide rod is slidably mounted inside the guide hole and penetrates the interior of the No. 1 spring. The top of the guide rod is fixedly connected to the bottom of the conical flow limiting valve block.

[0037] As a preferred solution of the present invention, the deceleration component further includes:

[0038] The second spring is fixedly arranged on the periphery of the telescopic rod, and the second spring is fixedly installed between the bottom of the transverse plate and the top of the fastening block.

[0039] As a preferred solution of the present invention, a protective shell is fixedly installed on the top of the detection base, and the protective shell is located outside the detection component and the deceleration component.

[0040] As a preferred solution of the present invention, a computer is fixedly mounted on one side of the protective housing, the output end of the computer is wirelessly connected to the input end of the ultrasonic detection probe via a local area network, and the ultrasonic detection probe is powered by a built-in power supply.

[0041] As a preferred solution of the present invention, a speed limiter is fixedly installed on the top of the detection base, and the inner wall of the output shaft of the speed limiter is fixedly connected to the outer wall of the driving wheel shaft.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. In the present invention, defect detection is performed on a large reinforced concrete casting by pushing the equipment to move. At the same time, during the movement of the equipment, the detection component continuously pushes the ultrasonic detection probe upward, so that during the movement of the equipment, it is ensured that the bottom of the ultrasonic detection probe does not rub against the upper end of the reinforced concrete casting, thereby avoiding damage to the ultrasonic detection probe.

[0044] 2. In the present invention, during the upward movement of the detection component, the damping oil located inside the retarder cylinder flows in through the top of the conical oil drain hole, and then flows out from the bottom of the conical oil drain hole into the interior of the retarder cylinder located in the area at the bottom of the retarder cylinder. The conical flow limiting valve block moves downward inside the conical oil drain hole under the action of oil pressure, compressing the No. 1 spring, and the conical flow limiting valve block moves downward, causing the gap channel between the inner wall of the conical oil drain hole and the outer wall of the conical flow limiting valve block to become larger, which makes it easier for the damping oil to quickly pass through the conical oil drain hole and be discharged to the area at the bottom of the retarder piston, making the retarder piston move upward more smoothly, and facilitating the upward movement of the detection component.

[0045] 3. In the present invention, during the downward movement of the detection component, the rebound force of the No. 1 spring pushes the conical flow limiting valve block to move upward on the top of the conical oil drain hole, causing the gap between the inner wall of the conical oil drain hole and the outer wall of the conical flow limiting valve block to become smaller, that is, the channel for the damping oil to flow upward becomes narrower, resulting in a slow flow of the damping oil, which causes the speed of the retarding piston to move downward to slow down, that is, the speed of the telescopic rod moving downward is slowed down, and then the assembly seat drives the ultrasonic detection probe to move slowly downward, ensuring that there is no collision when the bottom of the ultrasonic detection probe contacts the upper end of the reinforced concrete casting body, thereby avoiding damage to the bottom of the ultrasonic detection probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of the present invention;

[0047] Figure 2 The structure of the detection component and the deceleration component in the present invention is shown in FIG. Figure 1 ;

[0048] Figure 3 The structure of the detection component and the deceleration component in the present invention is shown in FIG. Figure 2 ;

[0049] Figure 4 Detailed structural diagram of the detection component in the present invention Figure 1 ;

[0050] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of part A;

[0051] Figure 6 Detailed structural diagram of the detection component in the present invention Figure 2 ;

[0052] Figure 7 Detailed structural diagram of the detection component in the present invention Figure 3 ;

[0053] Figure 8 It is a structural schematic diagram of the retarding piston in the present invention;

[0054] Fig. 9 It is a schematic diagram of the side section structure of the retarding piston in the present invention.

[0055] In the figure: 100, detection base; 101, protective shell; 200, detection component; 201, bearing seat; 202, connecting plate; 203, horizontal plate; 204, linear bearing; 205, telescopic rod; 206, assembly seat; 207, tooth hole; 208, ultrasonic detection probe; 209, fastening block; 2010, driven shaft; 2011, rocker arm; 2012, derivation wheel; 2013, driving wheel Shaft; 2014, small pulley; 2015, large pulley; 2016, toothed belt; 2017, walking wheel; 300, retarding component; 301, retarding cylinder; 302, retarding piston; 303, conical oil drain hole; 304, conical flow limiting valve block; 305, guide frame; 306, guide hole; 307, guide rod; 308, spring No. 1; 309, spring No. 2; 400, computer; 500, speed limiter. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] See also Figures 1 to 9 The technical solution provided by the present invention specifically includes the following embodiments:

[0058] A nondestructive testing device for reinforced concrete structural defects includes a testing base 100, a testing component 200 and a deceleration component 300. The testing component 200 is fixedly arranged on the top of the testing base 100 and is used for equal-interval testing of reinforced concrete. The deceleration component 300 is fixedly arranged on the top of the testing base 100 and is used for decelerating the downward movement of the testing component 200.

[0059] For further details, please refer to Figure 2 to Figure 7 As shown:

[0060] The detection component 200 includes a bearing seat 201, a connecting plate 202, a horizontal plate 203, a linear bearing 204, a telescopic rod 205, an assembly seat 206, a tooth hole 207, an ultrasonic detection probe 208, a fastening block 209, a driven shaft 2010, a rocker arm 2011, a derivation wheel 2012, a driving wheel shaft 2013, a small pulley 2014, a large pulley 2015, a toothed belt 2016 and a walking wheel 2017. The bearing seat 201 is fixedly mounted on the top of the detection base 100 symmetrically in front and back, and the connecting plate 202 is fixedly mounted on the top of the bearing seat 201. The transverse plate 203 is fixedly mounted on one end of the two connecting plates 202, the linear bearings 204 are fixedly mounted on the top of the transverse plate 203 and are distributed front and rear, the telescopic rods 205 are slidably mounted inside the linear bearings 204, and the number is two, the assembly seat 206 is fixedly mounted on the bottom of the two telescopic rods 205, and the bottom of the assembly seat 206 is penetrated with a tooth hole 207, the tooth hole 207 is located between the two telescopic rods 205, the ultrasonic detection probe 208 is fastened to the inside of the tooth hole 207 by threading, and the fastening block 209 is fixed The driven shaft 2010 is rotatably mounted between the front and rear bearing seats 201 through a bearing, and the rocker arm 2011 is symmetrically fixedly mounted on the middle of the outer wall of the driven shaft 2010. The guide wheel 2012 is rotatably mounted between the front and rear rocker arms 2011 and away from one end of the driven shaft 2010. The position of the guide wheel 2012 corresponds to the position of the fastening block 209. The driving wheel shaft 2013 is rotatably mounted inside the front and rear bearing seats 201 through a bearing, and is fixedly mounted on the driven shaft 2010 with the rocker arm 2011 symmetrically fixedly mounted on the middle of the outer wall of the driven shaft 2010. The driven shaft 2010 is arranged in parallel, the driving wheel shaft 2013 is located at the bottom of the driven shaft 2010, and movably passes through the front and back sides of the two bearing seats 201, the small pulley 2014 is fixedly installed on the outer wall of the driving wheel shaft 2013, and is close to one end of one of the bearing seats 201, the large pulley 2015 is fixedly installed on the outer wall of the driven shaft 2010, and corresponds to the position of the small pulley 2014, the toothed belt 2016 is sleeved on the periphery of the small pulley 2014 and the large pulley 2015, and the walking wheel 2017 is fixedly installed at both ends of the outer wall of the driving wheel shaft 2013.

[0061] Specifically, the staff pushes the equipment to move slowly and uniformly on the upper end of the reinforced concrete casting body. When inspecting a larger concrete casting body, the two walking wheels 2017 are subjected to the thrust and roll, thereby driving the driving wheel shaft 2013 to rotate inside the front and rear bearing seats 201. The rotation of the driving wheel shaft 2013 then drives the small pulley 2014 to rotate together, and further drives the large pulley 2015 together with the driven shaft 2010 to rotate inside the front and rear bearing seats 201 under the connection action of the toothed belt 2016. The rotation of the driven shaft 2010 drives the two rocker arms 211 together with the guide wheel 2012 to rotate counterclockwise. When the guide wheel 2012 rotates to the bottom wall of the fastening block 209, as the guide wheel 2012 continues to rotate, the fastening block 209 is moved upward. The fastening block 209 is lifted up, driving the two telescopic rods 205 to move upward along the inner walls of the two linear bearings 204, and the two No. 2 springs 309 are compressed and stored. At the same time, the two telescopic rods 205 move upward and also drive the assembly seat 206 and the ultrasonic detection probe 208 to move upward. As the derivation wheel 2012 continues to rotate counterclockwise and separates from the bottom of the fastening block 209, the rebound force of the two No. 2 springs 309 pushes the fastening block 209, the two telescopic rods 205, the assembly seat 206 and the ultrasonic detection probe 208 downward, so that the bottom of the ultrasonic detection probe 208 fits with the top of the reinforced concrete casting, and ultrasonic detection is performed on the reinforced concrete casting, thereby discovering defects inside the reinforced concrete casting.

[0062] For further details, please refer to Figure 7 to Figure 9 As shown:

[0063] The deceleration component 300 includes a deceleration cylinder 301, a deceleration piston 302, a conical oil-draining hole 303, a conical flow-limiting valve block 304, a guide frame 305, a guide hole 306, a guide rod 307, a No. 1 spring 308 and a No. 2 spring 309. The deceleration cylinder 301 is fixedly installed on the top of the detection base 100 in a front-to-back distribution and is concentric with the center of the telescopic rod 205. The telescopic rod 205 slides through the interior of the deceleration cylinder 301. The interior of the deceleration cylinder 301 is filled with damping oil. The deceleration piston 302 is fixedly installed on the outer wall of the telescopic rod 205. The outer wall of the deceleration piston 302 is slidably connected to the inner wall of the deceleration cylinder 301. The conical oil-draining hole 303 is opened at the top of the deceleration piston 302 and extends through to the bottom of the deceleration piston 302. The number of the conical oil-draining holes 303 is at least One, the conical flow limiting valve block 304 is movably arranged inside the conical oil-draining hole 303, and its specifications are compatible with those of the conical oil-draining hole 303. The guide frame 305 is fixedly installed at the bottom of the slow-down piston 302. The No. 1 spring 308 is fixedly installed between the top of the guide frame 305 and the bottom of the conical oil-draining hole 303. The guide hole 306 is opened through the top of the guide frame 305 and is concentric with the center of the conical flow limiting valve block 304. The guide rod 307 is slidably installed inside the guide hole 306 and passes through the inside of the No. 1 spring 308. The top of the guide rod 307 is fixedly connected to the bottom of the conical flow limiting valve block 304. The No. 2 spring 309 is fixedly arranged on the periphery of the telescopic rod 205, and the No. 2 spring 309 is fixedly installed between the bottom of the horizontal plate 203 and the top of the fastening block 209.

[0064] Specifically, the telescopic rod 205 moves upward and also drives the slow piston 302 connected thereto to slide upward along the inner wall of the slow cylinder 301. The slow piston 302 moves upward to squeeze the damping oil inside the slow cylinder 301. At the same time, the slow piston 302 moves upward and drives the conical flow limiting valve block 304, the guide frame 305, the guide rod 307 and the No. 1 spring 308 to move upward together. The damping oil inside the slow cylinder 301 flows in through the top of the conical oil-draining hole 303, and then flows out from the bottom of the conical oil-draining hole 303 into The interior of the retarder cylinder 301 is located in the area at the bottom of the retarder cylinder 301. During this period, the conical flow limiting valve block 304 is moved downward in the conical oil-draining hole 303 by the oil pressure, compressing the No. 1 spring 308, and the conical flow limiting valve block 304 moves downward, causing the gap channel between the inner wall of the conical oil-draining hole 303 and the outer wall of the conical flow limiting valve block 304 to become larger, which makes it easier for the damping oil to quickly pass through the conical oil-draining hole 303 to the area at the bottom of the retarder piston 302, making the retarder piston 302 move upward more smoothly. When the No. 2 spring 308 is pressed, the retarder piston 302 will move upward more smoothly. 09's elastic force pushes the fastening block 209 and the two telescopic rods 205 to move downward, and the telescopic rod 205 moves downward, driving the deceleration piston 302 to move together. At this time, the damping oil located in the bottom area of ​​the deceleration piston 302 flows in through the bottom of the conical oil-draining hole 303, and then is discharged from the top of the conical oil-draining hole 303 to the top area of ​​the deceleration piston 302. During this period, the action of the oil and the rebound force of the No. 1 spring 308 push the conical flow limiting valve block 304 to move upward at the top of the conical oil-draining hole 303, causing The gap between the inner wall of the tapered oil-draining hole 303 and the outer wall of the tapered flow-limiting valve block 304 becomes smaller, that is, the channel for the damping oil to flow upward becomes narrower, resulting in a slow flow of the damping oil, which causes the speed of the retarding piston 302 to move downward to slow down, that is, the speed of the telescopic rod 205 moving downward to slow down, so that the assembly seat 206 drives the ultrasonic detection probe 208 to move slowly downward, ensuring that there is no collision when the bottom of the ultrasonic detection probe 208 contacts the upper end of the reinforced concrete casting body, thereby avoiding damage to the bottom of the ultrasonic detection probe 208.

[0065] It should be additionally explained that a speed limiter 500 is fixedly installed on the top of the detection base 100 , and the inner wall of the output shaft of the speed limiter 500 is fixedly connected to the outer wall of the driving wheel shaft 2013 .

[0066] When the inspector pushes the equipment to move, the speed limiter 500 limits the speed of the driving wheel shaft 2013, so that the driving wheel shaft 2013 is always rotating at the maximum speed limit of the speed limiter 500, and the speed limit size is adaptively set to the deceleration component 300. That is to say, when the deceleration component 300 acts on the ultrasonic detection probe 208 to move to the lowest position, the derivation wheel 2012 just rotates to the bottom of the fastening block 209 again, and as the equipment continues to move, the ultrasonic detection probe 208 is pushed upward again, so that during the movement of the equipment, it is ensured that the bottom of the ultrasonic detection probe 208 will not rub against the upper end of the reinforced concrete casting body.

[0067] For further details, please refer to Figure 1 As shown:

[0068] A protective shell 101 is fixedly mounted on the top of the detection base 100 , and the protective shell 101 is located outside the detection component 200 and the deceleration component 300 .

[0069] Specifically, by providing the protective shell 101, the detection component 200 and the deceleration component 300 are protected to prevent the detection component 200 and the deceleration component 300 from being dusted, thereby ensuring the smooth operation and service life of the detection component 200 and the deceleration component 300.

[0070] For further details, please refer to Figure 1 As shown:

[0071] A computer 400 is fixedly mounted on one side of the protective housing 101 . The output end of the computer 400 is wirelessly connected to the input end of the ultrasonic detection probe 208 via a local area network. The ultrasonic detection probe 208 is powered by a built-in power supply.

[0072] Specifically, ultrasonic detection is performed on the reinforced concrete casting body through the ultrasonic detection probe 208, and the detection result is transmitted to the computer 400 through the transmission method of the wireless local area network, and the detection data is displayed on the display screen of the computer 400 to facilitate observation by the detection personnel. The setting of the wireless local area network eliminates the need for wiring between the ultrasonic detection probe 208 and the computer 400, thereby improving the cleanliness of the interior of the equipment.

[0073] When the nondestructive testing equipment for reinforced concrete structure defects of the present scheme is working, the staff holds the two handles on one side of the protective shell 101 with both hands to push the equipment to move slowly and uniformly on the upper end of the reinforced concrete casting body. For the inspection of larger concrete casting bodies, the two walking wheels 2017 are subjected to the thrust and roll, thereby driving the driving wheel shaft 2013 to rotate inside the front and rear bearing seats 201. The rotation of the driving wheel shaft 2013 then drives the small pulley 2014 to rotate together, and further drives the large pulley 2015 together with the driven shaft 2010 to rotate inside the front and rear bearing seats 201 under the connection action of the toothed belt 2016. The rotation of the driven shaft 2010 drives the two rocker arms 211 together with the derivation wheel 2012 to rotate counterclockwise. When the derivation wheel 2012 rotates to the bottom wall of the fastening block 209, as the pushing The guide wheel 2012 continues to rotate, pushing up the fastening block 209, and the fastening block 209 is pushed up and drives the two telescopic rods 205 to move upward along the inner walls of the two linear bearings 204, and the two No. 2 springs 309 are compressed and stored. At the same time, the two telescopic rods 205 move upward and also drive the assembly seat 206 and the ultrasonic detection probe 208 to move upward. As the derivation wheel 2012 continues to rotate counterclockwise and separates from the bottom of the fastening block 209, the rebound force of the two No. 2 springs 309 pushes the fastening block 209, the two telescopic rods 205, the assembly seat 206 and the ultrasonic detection probe 208 downward, so that the bottom of the ultrasonic detection probe 208 fits with the top of the reinforced concrete casting body, and the reinforced concrete casting body is ultrasonically detected, so as to find defects inside the reinforced concrete casting body;

[0074] When the telescopic rod 205 moves upward, it also drives the connected deceleration piston 302 to slide upward along the inner wall of the deceleration cylinder 301. The deceleration piston 302 moves upward to squeeze the damping oil inside the deceleration cylinder 301. At the same time, the upward movement of the deceleration piston 302 drives the conical flow limiting valve block 304, the guide frame 305, the guide rod 307 and the No. 1 spring 308 to move upward together. The damping oil inside the deceleration cylinder 301 flows in through the top of the conical oil drain hole 303, and then flows out from the bottom of the conical oil drain hole 303 into the interior of the deceleration cylinder 301 in the area at the bottom of the deceleration cylinder 301. During this period, the conical flow limiting valve block 304 is acted upon by the oil pressure inside the conical oil drain hole 303. The spring 308 is compressed when the conical limiting valve block 304 moves downward, causing the gap channel between the inner wall of the conical oil drain hole 303 and the outer wall of the conical limiting valve block 304 to become larger, which makes it easier for the damping oil to quickly pass through the conical oil drain hole 303 to be discharged to the bottom area of ​​the slow piston 302, making the slow piston 302 move upward more smoothly. When the elastic force of the No. 2 spring 309 pushes the fastening block 209 together with the two telescopic rods 205 to move downward, the telescopic rod 205 moves downward and drives the slow piston 302 to move together. At this time, the damping oil located in the bottom area of ​​the slow piston 302 flows in through the bottom of the conical oil drain hole 303, and is immediately discharged from the top of the conical oil drain hole 303. The top area of ​​the deceleration piston 302 is reached. During this period, the action of the oil and the rebound force of the No. 1 spring 308 push the conical flow limiting valve block 304 to move upward at the top of the conical oil drain hole 303, causing the gap between the inner wall of the conical oil drain hole 303 and the outer wall of the conical flow limiting valve block 304 to become smaller. In other words, the channel for the damping oil to flow upward becomes narrower, resulting in a slow flow of the damping oil, which causes the deceleration piston 302 to move downward at a slower speed. In other words, the telescopic rod 205 moves downward at a slower speed, thereby causing the assembly seat 206 to drive the ultrasonic detection probe 208 to move slowly downward, ensuring that there is no collision when the bottom of the ultrasonic detection probe 208 contacts the upper end of the reinforced concrete casting, thereby avoiding over-pressure. The bottom of the ultrasonic detection probe 208 is damaged. At the same time, when the inspector pushes the equipment to move, the speed limiter 500 limits the speed of the driving wheel shaft 2013, so that the driving wheel shaft 2013 is always in the maximum speed limit of the speed limiter 500, and the speed limit size is adaptively set to the deceleration component 300. That is to say, when the deceleration component 300 acts on the ultrasonic detection probe 208 to move to the lowest position, the derivation wheel 2012 just rotates to the bottom of the fastening block 209 again, and as the equipment continues to move, the ultrasonic detection probe 208 is pushed upward again, so that during the movement of the equipment, it is ensured that the bottom of the ultrasonic detection probe 208 will not rub against the upper end of the reinforced concrete casting body.

[0075] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A nondestructive testing device for reinforced concrete structure defects, characterized by: include: detectBase(100); The detection component (200) is fixedly arranged on the top of the detection base (100) and is used for equal spacing detection of reinforced concrete. The detection component (200) comprises: The bearing seat (201) is fixedly mounted on the top of the detection base (100) symmetrically front and rear; Two connecting plates (202) are fixedly mounted on the top of the bearing seat (201); A transverse plate (203) fixedly mounted on one end of the two connecting plates (202); Linear bearings (204) are fixedly mounted on the top of the transverse plate (203) in a front-to-rear distribution; Two telescopic rods (205) are slidably mounted inside the linear bearing (204); An assembly seat (206) is fixedly mounted on the bottom of the two telescopic rods (205), and a thread hole (207) is formed through the bottom of the assembly seat (206), and the thread hole (207) is located between the two telescopic rods (205); An ultrasonic detection probe (208) is installed inside the tooth hole (207) by threaded fastening; The deceleration component (300) is fixedly arranged on the top of the detection base (100) and is used to decelerate the downward movement of the detection component (200). The deceleration component (300) comprises: The retarder cylinder (301) is fixedly mounted on the top of the detection base (100) in a front-to-back distribution and is concentric with the center of the telescopic rod (205). The telescopic rod (205) slides through the interior of the retarder cylinder (301). The interior of the retarder cylinder (301) is filled with damping oil. A deceleration piston (302) is fixedly mounted on the outer wall of the telescopic rod (205), and the outer wall of the deceleration piston (302) is slidably connected to the inner wall of the deceleration cylinder (301); A conical oil-draining hole (303) is formed on the top of the deceleration piston (302) and extends through to the bottom of the deceleration piston (302). The number of the conical oil-draining hole (303) is at least one; A conical flow limiting valve block (304) is movably arranged inside the conical oil-draining hole (303) and has specifications matching those of the conical oil-draining hole (303); A guide frame (305) is fixedly mounted on the bottom of the retarding piston (302); A first spring (308) is fixedly mounted between the top of the guide frame (305) and the bottom of the conical oil-draining hole (303); A guide hole (306) is formed through the top of the guide frame (305) and is concentric with the center of the conical flow limiting valve block (304); A guide rod (307) is slidably mounted inside the guide hole (306) and penetrates the interior of the first spring (308), and the top of the guide rod (307) is fixedly connected to the bottom of the conical flow limiting valve block (304); The second spring (309) is fixedly arranged on the periphery of the telescopic rod (205), and the second spring (309) is fixedly installed between the bottom of the transverse plate (203) and the top of the fastening block (209).

2. The nondestructive testing equipment for reinforced concrete structure defects according to claim 1 is characterized by: The detection component (200) further comprises: A fastening block (209) is fixedly mounted on the upper portion of the outer wall of the two telescopic rods (205) and is located at the bottom of the transverse plate (203); The driven shaft (2010) is rotatably mounted between the front and rear bearing seats (201) via a bearing; The rocker arm (2011) is symmetrically fixedly mounted on the middle part of the outer wall of the driven shaft (2010); The guide wheel (2012) is rotatably mounted between the front and rear rocker arms (2011) and is away from one end of the driven shaft (2010). The position of the guide wheel (2012) corresponds to the position of the fastening block (209).

3. The nondestructive testing equipment for reinforced concrete structure defects according to claim 2 is characterized in that: The detection component (200) further includes: A driving wheel shaft (2013) is rotatably mounted inside the front and rear bearing seats (201) via bearings and is arranged parallel to the driven shaft (2010); the driving wheel shaft (2013) is located at the bottom of the driven shaft (2010) and movably passes through the front and back sides of the two bearing seats (201); A small pulley (2014) is fixedly mounted on the outer wall of the driving wheel shaft (2013) and is close to one end of one of the bearing seats (201); The large pulley (2015) is fixedly mounted on the outer wall of the driven shaft (2010) and corresponds to the position of the small pulley (2014); A toothed belt (2016) is sleeved around the small pulley (2014) and the large pulley (2015); The walking wheels (2017) are fixedly mounted on both ends of the outer wall of the driving wheel shaft (2013).

4. The nondestructive testing equipment for reinforced concrete structure defects according to claim 3 is characterized by: A protective shell (101) is fixedly mounted on the top of the detection base (100), and the protective shell (101) is located outside the detection component (200) and the deceleration component (300).

5. The nondestructive testing equipment for reinforced concrete structure defects according to claim 4 is characterized by: A computer (400) is fixedly mounted on one side of the protective housing (101); an output end of the computer (400) is wirelessly connected to an input end of an ultrasonic detection probe (208) via a local area network; and the ultrasonic detection probe (208) is powered by a built-in power supply.

6. The nondestructive testing equipment for reinforced concrete structure defects according to claim 5 is characterized by: A speed limiter (500) is fixedly mounted on the top of the detection base (100), and the inner wall of the output shaft of the speed limiter (500) is fixedly connected to the outer wall of the driving wheel shaft (2013).

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