An ultrasonic scanner supporting device for tomographic imaging of ancient building columns

Abstract

The present invention discloses an ultrasonic scanner supporting device for tomographic imaging of columns of ancient buildings, which solves the technical problem that ultrasonic low-frequency tomographic imaging scanners are inconvenient to use when measuring columns of ancient buildings. The present invention comprises a movable support, a telescopic rod is arranged on the movable support, a detachable support ring is arranged at the upper end of the telescopic rod, a track is arranged on the support ring, a driving unit is matched with the track, the driving unit is connected to the ultrasonic scanner, the driving unit is connected to the controller, and the controller is connected to a power supply. The present invention is not only easy to move and reliable in support and positioning, but also can adapt to the surrounding scanning of each cross section of the total height range of the indoor columns of the ancient buildings through the telescopic rod, without any fixation on the indoor floor of the ancient buildings and the column body, thereby avoiding damage to the ancient buildings to the greatest extent.

Description

Technical Field

[0001] The invention relates to the technical field of ancient building pillar measurement, in particular to an ultrasonic scanner supporting device for tomographic imaging of ancient building pillars. Background Art

[0002] The preliminary investigation work of ancient building repair is very important, which can effectively avoid the potential safety hazards in the repair process and prevent irreversible impact on the structure of ancient buildings. Among them, the measurement of wooden load-bearing columns of ancient buildings is an important part. Ultrasonic low-frequency tomography scanner is a multifunctional ultrasonic non-destructive testing instrument. Through a sensor matrix of 48 (4×12) ceramic wear-resistant low-frequency broadband shear wave dry point contact, it uses pulse dial-back technology and synthetic aperture focusing technology to combine detection, and performs internal imaging of concrete, reinforced concrete, stone and wood to detect internal inclusions, cavities, cracks, fissures, honeycombs, pre-buried pipes, etc. It can also be used to measure thickness and evaluate the strength of concrete. The thickness can be measured up to 2 meters. At present, this ultrasonic array non-destructive testing instrument is widely used in the preliminary investigation and research of ancient buildings, focusing on scanning and exploring the internal situation of wooden beam and column structures, providing reliable data support for possible wooden building diseases, and guiding the subsequent adoption of corresponding preventive protection measures.

[0003] However, the internal clearance of ancient buildings is relatively high, and the height of wooden columns can range from several meters to more than ten meters. In addition, the columns have tapers and side feet, are not perpendicular to the ground, and have different diameters at all heights. In daily ultrasonic testing, it is found that since ultrasonic testing equipment has no reliable fixing device, the use of ultrasonic low-frequency tomography scanners is limited, so they must be hand-held and lifted to the corresponding height by staff. However, due to the limitation that scaffolding cannot be set up arbitrarily inside ancient buildings, the detection of wooden columns can only be limited to a certain height range and is limited by the convenience of measuring the tapers and side feet of the columns. Therefore, a supporting device that can expand the use of the instrument is needed to meet its measurement work within the total height range of ancient building columns. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes an ultrasonic scanner supporting device for tomographic imaging of ancient building columns, which solves the technical problem that ultrasonic low-frequency tomographic imaging scanners are inconvenient to use when measuring ancient building columns.

[0005] The technical solution of the present invention is implemented as follows: an ultrasonic scanner supporting device for tomographic imaging of ancient building columns includes a movable support, a telescopic rod is provided on the movable support, a detachable support ring is provided at the upper end of the telescopic rod, a track is provided on the support ring, the track is equipped with a driving unit, the driving unit is connected to the ultrasonic scanner, the driving unit is connected to the controller, and the controller is connected to a power supply.

[0006] Furthermore, the track is arranged on the inner side of the support ring, the driving unit includes a gear ring arranged in the track, the gear ring includes at least two sections of detachable arc-shaped racks, the ultrasonic scanner is connected to the gear ring, and a driving mechanism meshing with the gear ring is arranged on the support ring, and the driving mechanism is connected to the controller.

[0007] Furthermore, the driving mechanism includes a stepper motor arranged on the supporting ring, the stepper motor is connected to the controller, the stepper motor is connected to a driving shaft, and a driving gear meshing with a gear ring is arranged on the driving shaft.

[0008] Furthermore, the stepper motor is fixedly mounted on the support ring via a mounting seat, a first bearing is arranged between the mounting seat and the rotating shaft of the stepper motor, and a second bearing is arranged between the end of the drive shaft and the support ring.

[0009] Furthermore, the ultrasonic scanner is connected to the gear ring via an electric push rod, a pressure sensor is provided on the surface where the ultrasonic scanner is released from the column of the ancient building, and the pressure sensor and the electric push rod are both connected to the controller.

[0010] Furthermore, the telescopic rod is an electric telescopic rod or a mechanical telescopic rod, and the electric telescopic rod is connected to the controller.

[0011] Furthermore, the movable support includes a left seat and a right seat that are detachably connected, and an inner hole larger than a column of the ancient building is provided between the left seat and the right seat.

[0012] Furthermore, a wheel set and adjustable supporting feet are arranged below the movable support.

[0013] Furthermore, the wheel set includes two universal wheels arranged under the left seat and two fixed wheels arranged under the right seat.

[0014] Furthermore, the adjustable supporting foot comprises a bolt threadably matched with the left seat and / or the right seat, and a supporting foot is arranged at the bottom end of the bolt.

[0015] The present invention is not only easy to move and reliable in supporting and positioning, but also can perform circumferential scanning of all cross sections of the indoor columns of ancient buildings through the telescopic rod, without any fixing on the internal ground of the ancient building and the column body, thus avoiding damage to the ancient building to the greatest extent. Before measuring, the support ring is firstly installed on the periphery of the column of the ancient building through disassembly and assembly, and then the telescopic rod is controlled to rise and fall, and the stepping motor is controlled to drive the ultrasonic scanner to rotate in the support ring, so as to perform full-circle scanning and measurement of the column of the ancient building. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of a partial cross-section of the support ring of the present invention;

[0018] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0019] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0020] Figure 4 for Figure 1 A top view of the movable support;

[0021] Figure 5 for Figure 1 Top view of the middle support ring. DETAILED DESCRIPTION

[0022] 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.

[0023] An ultrasonic scanner supporting device for tomographic imaging of ancient building columns, such as Figure 1 and Figure 4 As shown, it includes a movable support, which includes a detachably connected left seat 7 and a right seat 8, and an inner hole 9 larger than the column of the ancient building is provided between the left seat 7 and the right seat 8. A wheel set and an adjustable support foot are provided below the movable support, and the wheel set includes two universal wheels 10 provided below the left seat 7 and two directional wheels 11 provided below the right seat 8. The adjustable support foot includes a screw rod 12 threadably matched with the left seat 7 and the right seat 8, and a support foot 13 is provided at the bottom end of the screw rod 12.

[0024] When in use, the movable support can be conveniently moved to the side of the ancient building column by the universal wheel 10 and the directional wheel 11, and the ancient building column can be sleeved in the inner hole 9 by disassembling and reassembling the left seat 7 and the right seat 8. The connection method of the left seat 7 and the right seat 8 can be bolt connection, can be clamped, or can be other methods that are easy to disassemble. In the working state, the left seat 7 and the right seat 8 can be lifted by adjusting the screw rod 12 to avoid the influence of the slight sliding of the universal wheel 10 and the directional wheel 11 on the test data.

[0025] like Figure 1 and Figure 4 As shown, the movable support is provided with a mounting hole 14, and a telescopic rod 1 is fixedly provided on the movable support through the mounting hole 14. The telescopic rod 1 is an electric telescopic rod or a mechanical telescopic rod. If it is an electric telescopic rod, a controller is connected to control the lifting and lowering of the telescopic rod 1 through the controller, and the telescopic rod 1 can be extended or retracted to different heights. A detachable support ring 2 is provided at the upper end of the telescopic rod 1, such as Figure 5 As shown, the telescopic rod 1 includes a left support section 21 and a right support section 22, which are connected into a ring shape through a connecting plate 23 and a bolt group 24. Before the telescopic rod 1 is raised or lowered, the left support section 21 and the right support section 22 are disassembled so that the support ring 2 is sleeved around the ancient building column, and then connected and fixed through the connecting plate 23 and the bolt group 24.

[0026] like Figure 3 As shown, the support ring 2 is fixedly connected to the upper end of the telescopic rod 1 via a connecting assembly, and the connecting assembly includes a fixing plate 21 welded and fixed to the support ring 2 , and the fixing plate 21 is fixedly connected to the telescopic rod 1 via bolts 22 .

[0027] like Figure 2 As shown, a track 3 is arranged on the inner side of the support ring 2, and the track 3 is equipped with a driving unit, and the driving unit is connected to an ultrasonic scanner 5, and the driving unit is connected to the controller, and the controller is connected to a power supply. The power supply can be external or built in a movable support, and those skilled in the art can freely choose the installation position of the controller and the power supply, so the position of the controller and the power supply is not shown in the accompanying drawings. The controller controls the driving unit to work, and then drives the ultrasonic scanner 5 to rotate relative to the support ring 2. The ultrasonic scanner 5 can perform circumferential scanning of the columns of the ancient building as the telescopic rod 1 rises and falls.

[0028] like Figure 3As shown, the driving unit includes a gear ring 4 arranged in the track 3, and the gear ring 4 includes at least two sections of detachable arc-shaped racks, which are assembled synchronously when the support ring 2 is assembled. The ultrasonic scanner 5 is connected to the gear ring 4, and a driving mechanism meshing with the gear ring 4 is provided on the support ring 2, and the driving mechanism is connected to the controller. The driving mechanism includes a stepper motor 6 arranged on the support ring 2, and the stepper motor 6 is connected to the controller. The rotating shaft of the stepper motor 6 is connected to a driving shaft 61 through a coupling, and a driving gear 62 meshing with the gear ring 4 is provided on the driving shaft 61. The controller controls the stepper motor 6 to rotate, and the stepper motor 6 drives the driving gear 62 to rotate, and the driving gear 62 drives the gear ring 4 to rotate, and then the gear ring 4 drives the ultrasonic scanner 5 to rotate synchronously.

[0029] Furthermore, the stepper motor 6 is fixedly mounted on the support ring 2 via a mounting seat 63, a first bearing 64 is disposed between the mounting seat 63 and the rotating shaft of the stepper motor 6, and a second bearing 65 is disposed between the end of the drive shaft 61 and the support ring 2. The first bearing 64 and the second bearing 65 fully ensure the reliability and stability of the drive gear ring 4.

[0030] Furthermore, the ultrasonic scanner 5 is connected to the gear ring 4 via an electric push rod 66, and a pressure sensor 67 is provided on the surface of the ultrasonic scanner 5 in contact with the column of the ancient building, and the pressure sensor 67 and the electric push rod 66 are both connected to the controller. The controller can control the extension of the electric push rod 66 according to the dynamic value detected by the pressure sensor 67, thereby making the ultrasonic scanner 5 fit closely with the outer peripheral surface of the column of the ancient building.

[0031] The ultrasonic scanner 5 is a product available on the market, such as the A1040 MIRA portable ultrasonic tomography scanner, which has the advantages of being light, shockproof, able to work independently, and not requiring an external power supply or computer. Memory sponges 52 can be attached to the upper and lower positions of the phase antenna array sensor 51 of the instrument, which can effectively reduce the contact and collision between the columns of the ancient building and the instrument body, increase a certain buffering capacity, and prevent damage to the instrument.

[0032] After the ultrasonic scanner 5 starts measuring, the telescopic rod 1 is in a standby state, and the extension speed of the telescopic rod 1 is determined according to the time for the gear ring 4 to rotate one circle. Based on this, the full cross-sectional movement of the ultrasonic scanner 5 around the column at different heights can be satisfied. During the rising process of the ultrasonic scanner 5, the pressure sensor 67 detects the contact pressure between the instrument body and the column of the ancient building in real time. If the pressure between the two is lower than or greater than a certain threshold, the electric push rod 66 will be adjusted in real time to ensure that the ultrasonic scanner 5 is in close contact with the column of the ancient building. After completing the measurement work of the set height, the telescopic rod 1 begins to lower and the scanning work ends. The ultrasonic scanner 5 will automatically store data and reconstruct the cross-sectional image to produce a 3D image reproduction of the internal structure of the object being measured.

[0033] The details not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic scanner supporting device for tomographic imaging of ancient building columns, characterized in that: Used for measuring columns of ancient buildings with tapered and side feet, comprising a movable support, the movable support is provided with a telescopic rod (1), the upper end of the telescopic rod (1) is provided with a detachable support ring (2), the support ring (2) is provided with a track (3), the track (3) is matched with a driving unit, the driving unit is connected to an ultrasonic scanner (5), the driving unit is connected to a controller, and the controller is connected to a power supply; The support ring (2) comprises a left support segment (21) and a right support segment (22), and the left support segment (21) and the right support segment (22) are connected to form a ring shape via a connecting plate (23) and a bolt group (24); The track (3) is arranged on the inner side of the support ring (2); the drive unit comprises a gear ring (4) arranged in the track (3); the gear ring (4) comprises at least two sections of detachable arc-shaped racks; the ultrasonic scanner (5) is connected to the gear ring (4); a drive mechanism meshing with the gear ring (4) is arranged on the support ring (2); and the drive mechanism is connected to the controller; The driving mechanism comprises a stepper motor (6) arranged on the support ring (2), the stepper motor (6) being connected to the controller, the stepper motor (6) being connected to a driving shaft (61), and the driving shaft (61) being provided with a driving gear (62) meshing with the gear ring (4); The stepper motor (6) is fixedly mounted on the support ring (2) via a mounting seat (63); a first bearing (64) is arranged between the mounting seat (63) and the rotating shaft of the stepper motor (6); and a second bearing (65) is arranged between the end of the drive shaft (61) and the support ring (2); The ultrasonic scanner (5) and the gear ring (4) are connected via an electric push rod (66); a pressure sensor (67) is provided on the surface of the ultrasonic scanner (5) in contact with the column of the ancient building; the pressure sensor (67) and the electric push rod (66) are both connected to the controller; the controller controls the extension of the electric push rod (66) according to the dynamic value detected by the pressure sensor (67), thereby making the ultrasonic scanner (5) closely fit the outer peripheral surface of the column of the ancient building; The telescopic rod (1) is an electric telescopic rod or a mechanical telescopic rod, and the electric telescopic rod is connected to the controller; The movable support comprises a left seat (7) and a right seat (8) which are detachably connected, and an inner hole (9) larger than a column of the ancient building is provided between the left seat (7) and the right seat (8); After the ultrasonic scanner (5) starts measuring, the telescopic rod (1) is in a standby state, and the extension speed of the telescopic rod (1) is determined according to the time it takes for the toothed ring (4) to rotate one circle; based on this, the ultrasonic scanner (5) is able to move around the column at different heights in the entire cross section; during the ascending process of the ultrasonic scanner (5), the pressure sensor (67) detects the contact pressure between the instrument body and the column of the ancient building in real time; if the pressure between the two is lower than or greater than a threshold, the electric push rod (66) is extended and adjusted in real time to ensure that the ultrasonic scanner (5) is in close contact with the column of the ancient building; after completing the measurement work at the set height, the telescopic rod (1) begins to descend, and the scanning work ends; the ultrasonic scanner (5) automatically stores the data and reconstructs the cross-sectional image to generate a 3D image reproduction of the internal structure of the measured object.

2. The ultrasonic scanner supporting device for tomographic imaging of ancient building columns according to claim 1 is characterized in that: A wheel set and an adjustable supporting foot are arranged below the movable support.

3. The ultrasonic scanner supporting device for tomographic imaging of ancient building columns according to claim 2 is characterized in that: The wheel set comprises two universal wheels (10) arranged below the left seat (7) and two fixed wheels (11) arranged below the right seat (8).

4. The ultrasonic scanner supporting device for tomographic imaging of ancient building columns according to claim 2 or 3, characterized in that: The adjustable support foot comprises a screw rod (12) threadably matched with the left seat (7) and / or the right seat (8), and a support foot (13) is provided at the bottom end of the screw rod (12).

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