Excitator for detecting internal defects of concrete by elastic wave CT method

Abstract

The utility model relates to the technical field of civil engineering nondestructive testing, and discloses an exciter for detecting internal defects of concrete by adopting an elastic wave CT (Computed Tomography) method, which comprises a bottom plate, a supporting mechanism is arranged on one side of the bottom plate and comprises a limiting rod, a limiting plate, a rotating block, a threaded plate and a threaded rod, and the outer wall of the limiting rod is fixedly connected with the inner wall of the limiting plate. One end of the limiting rod is fixedly connected with one side of the rotating block, and one side of the bottom plate is fixedly connected with one end of a threaded plate. The device can be better supported and fixed, and the problems that in actual use and in work, three slender exciter adjusting rods are used for supporting, and the contact area between the adjusting rods and the ground is limited, so that equipment shakes easily in severe weather such as wind blowing, and potential safety hazards exist are solved. Therefore, the detection accuracy of the exciter is improved, the working efficiency is improved, and the device is practical and suitable for being widely popularized and used.

Description

Technical Field

[0001] The utility model belongs to the technical field of nondestructive testing of civil engineering, and in particular relates to an exciter for detecting internal defects of concrete by using an elastic wave CT method. Background Art

[0002] In the detection of internal defects in concrete, impact elastic waves are often used as the medium, with wave velocity and signal amplitude as the calculation basis. The object to be inspected is scanned in all directions through cross-measurement lines, and the structural quality distribution image that can truly reflect the internal situation of the structure is obtained by inversion and reconstruction of the collected data, so as to achieve the purpose of detecting the internal quality of the structure.

[0003] A search of CN217180721U disclosed an exciter and a detection device for detecting internal defects of concrete using the elastic wave CT method. The exciter and the detection device for detecting internal defects of concrete using the elastic wave CT method, through the overall structure of the equipment, enable the acceleration sensor to be adjusted in level, length and angle according to different on-site conditions, thereby facilitating adaptation to different on-site working conditions.

[0004] When the exciter is in use, the detection work inside the concrete is realized through the structures such as the exciter adjusting rod, the exciting hammer, and the acceleration sensor. However, in actual use, during work, it is supported by three slender exciter adjusting rods, and the contact area between the adjusting rods and the ground is limited. Therefore, in bad weather such as windy, it is easy to cause the equipment to shake, posing a safety hazard, thereby reducing the accuracy of the exciter detection.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] An exciter for detecting internal defects of concrete by elastic wave CT method comprises a bottom plate, a support mechanism is arranged on one side of the bottom plate, the support mechanism comprises a limit rod, a limit plate, a rotating block, a threaded plate, and a threaded rod, the outer wall of the limit rod is fixedly connected to the inner wall of the limit plate, one end of the limit rod is fixedly connected to one side of the rotating block, one side of the bottom plate is fixedly connected to one end of the threaded plate, the inner wall of the threaded plate is threadedly connected to the outer wall of the threaded rod, the inner side of the bottom plate is rotatably connected to the support plate, and one side of the support plate is fixedly installed with an anti-slip plate;

[0008] An adjusting mechanism is arranged above the bottom plate.

[0009] As a preferred embodiment of the utility model, the adjustment mechanism includes a mounting plate, a motor, a rotating rod, a placement block, and an electric telescopic rod. One side of the mounting plate is fixedly connected to one end of the motor, the output end of the motor is fixedly connected to one end of the rotating rod, the outer wall of the rotating rod is fixedly connected to the inner wall of the placement block, the top of the placement block is fixedly connected to the bottom of the electric telescopic rod, an activator body is fixedly installed on the top of the electric telescopic rod, and a display is provided on the top of the base plate.

[0010] As a preferred embodiment of the utility model, the number of the limit rods is four, and the limit rods are symmetrically distributed on the inner side of the bottom plate, the number of the limit plates is four, and the limit plates are symmetrically distributed on the outer walls of the four limit rods, and a placement groove is opened on the inner side of the bottom plate, so that the support plate can be better limited, the support plate can be better adjusted, and the device can be better supported.

[0011] As a preferred embodiment of the utility model, a spring is installed between one side of the limit plate and the inner wall of the placement groove, the number of the springs is four, and the springs are symmetrically distributed on one side of the four limit plates, a threaded hole is opened on the outside of the rotating block, and one end of the threaded rod is threadedly connected to the inner wall of the threaded hole, so that the support plate can be better limited and fixed, and can be better adjusted, thereby improving work efficiency.

[0012] As a preferred embodiment of the utility model, the mounting plate is U-shaped, one end of the rotating rod is rotatably connected to the inner side of the mounting plate through a bearing, and there are two displays, which are symmetrically distributed on the top of the base plate, so that the activator body can be better adjusted, effectively improving the working range of the activator and making it more convenient for operators to use.

[0013] As a preferred embodiment of the present utility model, the inner wall of the base plate is movably connected to the outer wall of the limiting rod, and the top of the base plate is fixedly connected to the bottom of the mounting plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model realizes better support and fixation of the device through the support mechanism installed on one side of the base plate, solves the problem that in actual use, during work, the device is supported by three slender stimulator adjustment rods, and the contact area between the adjustment rods and the ground is limited, so the equipment is easily caused to shake in bad weather such as wind, posing a safety hazard. The accuracy of stimulator detection is improved, and work efficiency is improved.

[0016] The utility model realizes the ability to quickly and conveniently adjust the angle and height of the stimulator body through the adjustment mechanism installed above the bottom plate, so that the stimulator can better detect the inside of the concrete and is more convenient for operators to make adjustments.

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the support mechanism structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the regulating mechanism of the utility model.

[0023] In the figure: 1. base plate; 3. supporting mechanism; 301. limiting rod; 302. limiting plate; 303. rotating block; 304. threaded plate; 305. threaded rod; 306. supporting plate; 307. anti-skid plate; 4. adjusting mechanism; 401. mounting plate; 402. motor; 403. rotating rod; 404. placing block; 405. electric telescopic rod; 406. activator body; 407. display. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0025] Embodiment 1:

[0026] like Figures 1 to 4 As shown, an exciter for detecting internal defects of concrete by elastic wave CT method comprises a bottom plate 1, a support mechanism 3 is arranged on one side of the bottom plate 1, the support mechanism 3 comprises a limit rod 301, a limit plate 302, a rotating block 303, a threaded plate 304, and a threaded rod 305, the outer wall of the limit rod 301 is fixedly connected to the inner wall of the limit plate 302, one end of the limit rod 301 is fixedly connected to one side of the rotating block 303, one side of the bottom plate 1 is fixedly connected to one end of the threaded plate 304, the inner wall of the threaded plate 304 is threadedly connected to the outer wall of the threaded rod 305, a support plate 306 is rotatably connected to the inner side of the bottom plate 1, and an anti-slip plate 307 is fixedly installed on one side of the support plate 306;

[0027] In this embodiment, there are four limit rods 301, which are symmetrically distributed on the inner side of the bottom plate 1, and four limit plates 302, which are symmetrically distributed on the outer walls of the four limit rods 301. A placement groove is provided on the inner side of the bottom plate 1, so that the support plate 306 can be better limited, and the support plate 306 can be better adjusted to better support the device;

[0028] Furthermore, a spring is installed between one side of the limit plate 302 and the inner wall of the placement groove. There are four springs, which are symmetrically distributed on one side of the four limit plates 302. A threaded hole is opened on the outside of the rotating block 303, and one end of the threaded rod 305 is threadedly connected to the inner wall of the threaded hole, so that the support plate 306 can be better limited and fixed, and can be better adjusted, thereby improving work efficiency.

[0029] Embodiment 2:

[0030] An adjustment mechanism 4 is provided above the bottom plate 1;

[0031] The adjustment mechanism 4 includes a mounting plate 401, a motor 402, a rotating rod 403, a placement block 404, and an electric telescopic rod 405. One side of the mounting plate 401 is fixedly connected to one end of the motor 402, the output end of the motor 402 is fixedly connected to one end of the rotating rod 403, the outer wall of the rotating rod 403 is fixedly connected to the inner wall of the placement block 404, the top of the placement block 404 is fixedly connected to the bottom of the electric telescopic rod 405, an exciter body 406 is fixedly installed on the top of the electric telescopic rod 405, and a display 407 is provided on the top of the bottom plate 1;

[0032] In this embodiment, the shape of the mounting plate 401 is U-shaped, one end of the rotating rod 403 is rotatably connected to the inner side of the mounting plate 401 through a bearing, and there are two displays 407, which are symmetrically distributed on the top of the bottom plate 1, so that the exciter body 406 can be better adjusted, effectively improving the working range of the exciter, and making it more convenient for operators to use;

[0033] Furthermore, the inner wall of the bottom plate 1 is movably connected to the outer wall of the limiting rod 301 , and the top of the bottom plate 1 is fixedly connected to the bottom of the mounting plate 401 .

[0034] The implementation principle of the exciter of this embodiment that uses the elastic wave CT method to detect internal defects of concrete is as follows: when it is needed to be used, the operator places the device to the required position. When the support plate 306 needs to be opened for auxiliary support placement, the threaded rod 305 is rotated to move the threaded rod 305 on the threaded plate 304. The threaded rod 305 can pull out the rotating block 303. At this time, the rotating block 303 can be rotated to drive the limit plate 302 to rotate, and the rotating block 303 can be pulled to drive the limit rod 301 to move. The limit rod 301 moves and drives the limit plate 302 to move. As the limit plate 302 moves, it can squeeze The spring is compressed, and the limit fixation of the support plate 306 can be cancelled at this time. At this time, the support plate 306 can contact the ground, and the limit plate 302 is now in a flat side that is pressed and contacted with one side of the support plate 306. Repeating the above steps can fix the support plate 306, thereby assisting the bottom plate 1 in supporting and fixing, and the anti-slip plate 307 can increase the friction between the support plate 306 and the ground, so that it can be used better. When the support plate 306 needs to be retracted, repeat the above steps. After the support plate 306 is retracted, the inclined side of the limit plate 302 is pressed and contacted with one side of the support plate 306, thereby completing the fixation;

[0035] After the device is fixed and placed, the inside of the concrete can be inspected by starting the stimulator body 406. At this time, the inspection data and results can be displayed on the display 407 for the operator to observe. When it is necessary to adjust the angle of the stimulator body 406, the motor 402 is started to drive the rotating rod 403 to rotate, and the rotating rod 403 is rotated to drive the placement block 404 to rotate. As the placement block 404 rotates, the stimulator body 406 can be driven to rotate, thereby adjusting the angle of the stimulator body 406. When it is necessary to adjust the height of the stimulator body 406, the electric telescopic rod 405 is started to drive the stimulator body 406 to move, thereby adjusting the height of the stimulator body 406, making it more convenient for the stimulator body 406 to detect concrete, and effectively improving the scope of use of the stimulator body 406.

Claims

1. An exciter for detecting internal defects of concrete using elastic wave CT method, comprising a bottom plate (1), characterized in that: A support mechanism (3) is provided on one side of the base plate (1), and the support mechanism (3) comprises a limit rod (301), a limit plate (302), a rotating block (303), a threaded plate (304), and a threaded rod (305); the outer wall of the limit rod (301) is fixedly connected to the inner wall of the limit plate (302); one end of the limit rod (301) is fixedly connected to one side of the rotating block (303); one side of the base plate (1) is fixedly connected to one end of the threaded plate (304); the inner wall of the threaded plate (304) is threadedly connected to the outer wall of the threaded rod (305); a support plate (306) is rotatably connected to the inner side of the base plate (1); and an anti-slip plate (307) is fixedly installed on one side of the support plate (306); An adjustment mechanism (4) is arranged above the bottom plate (1), and the adjustment mechanism (4) comprises a mounting plate (401), a motor (402), a rotating rod (403), a placement block (404), and an electric telescopic rod (405); one side of the mounting plate (401) is fixedly connected to one end of the motor (402), and the output end of the motor (402) is fixedly connected to one end of the rotating rod (403).

2. The exciter for detecting internal defects of concrete using elastic wave CT method according to claim 1 is characterized in that: The outer wall of the rotating rod (403) is fixedly connected to the inner wall of the placement block (404), the top of the placement block (404) is fixedly connected to the bottom of the electric telescopic rod (405), the top of the electric telescopic rod (405) is fixedly mounted with an activator body (406), and the top of the bottom plate (1) is provided with a display (407).

3. The exciter for detecting internal defects of concrete using elastic wave CT method according to claim 1, characterized in that: The number of the limiting rods (301) is four, and the limiting rods (301) are symmetrically distributed on the inner side of the bottom plate (1); the number of the limiting plates (302) is four, and the limiting plates (302) are symmetrically distributed on the outer walls of the four limiting rods (301); and a placement groove is provided on the inner side of the bottom plate (1).

4. The exciter for detecting internal defects of concrete using elastic wave CT method according to claim 1, characterized in that: A spring is installed between one side of the limit plate (302) and the inner wall of the placement groove. The number of the springs is four and the springs are symmetrically distributed on one side of the four limit plates (302). A threaded hole is opened on the outer side of the rotating block (303), and one end of the threaded rod (305) is threadedly connected to the inner wall of the threaded hole.

5. The exciter for detecting internal defects of concrete using elastic wave CT method according to claim 2, characterized in that: The mounting plate (401) is U-shaped, one end of the rotating rod (403) is rotatably connected to the inner side of the mounting plate (401) via a bearing, and there are two displays (407), which are symmetrically distributed on the top of the bottom plate (1).

6. The exciter for detecting internal defects of concrete using elastic wave CT method according to claim 1, characterized in that: The inner wall of the base plate (1) is movably connected to the outer wall of the limiting rod (301), and the top of the base plate (1) is fixedly connected to the bottom of the mounting plate (401).

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