Ultrasonic detection probe fixing device

Abstract

The invention relates to the technical field of ultrasonic nondestructive testing, and discloses an ultrasonic testing probe fixing device which comprises a round tray and further comprises a round base threaded hole and a fixing assembly, a supporting round base is arranged on the round tray, the top of the supporting round base is fixedly connected with a connecting circular ring side column, a probe body is arranged in the round tray, and the probe body is fixedly connected with the fixing assembly. The round base threaded hole is formed in the supporting round base, the interior of the round base threaded hole is in threaded connection with a balance weight rod, and a balance weight ring is arranged outside the balance weight rod. The balance weight rods are evenly connected to the round base threaded holes in the supporting round base in a threaded mode, the number of the balance weight rings is distributed according to the requirement of the device for pressing balance weights, the balance weight rings are evenly fixed to the outer portions of the balance weight rods to achieve pressing of the device, stable pressing force is provided through multiple balance weight design and a standardized connecting structure, and therefore the balance weight rods are fixed to the round base threaded holes in the supporting round base. It is ensured that the probe is tightly attached to the detection face, the influence of human factors on the detection result is reduced, and therefore the reliability and accuracy of the detection result are improved.

Description

Technical Field

[0001] The invention relates to the field of ultrasonic nondestructive testing, and in particular to a fixing device for an ultrasonic testing probe. Background Art

[0002] As one of the key technologies in the field of non-destructive testing, ultrasonic testing technology has been widely used in the characterization of internal defects in key fields such as industrial equipment, composite materials, and aerospace.

[0003] In the prior art, the core technology of the device lies in analyzing the acoustic impedance change characteristics of the ultrasonic waveform in the medium propagation, and the mechanical coupling state between the probe and the object under test directly affects the reliability of signal acquisition. Traditional contact ultrasonic testing mainly relies on manual operation. The tester needs to continuously apply moderate pressure to keep the probe and the workpiece tightly coupled. Too low contact pressure can easily lead to an increase in the thickness of the coupling medium layer, causing sound energy attenuation and signal distortion; and excessive pressure will change the resonance characteristics of the ultrasonic transducer, causing the time domain characteristics of the detection signal to shift, thereby significantly reducing the reliability and repeatability of the detection results. Therefore, it is necessary to improve an ultrasonic detection probe fixing device to solve the above problems. Summary of the invention

[0004] In order to overcome the problem that too low contact pressure of the ultrasonic detection probe fixing device can easily lead to an increase in the thickness of the coupling medium layer, causing sound energy attenuation and signal distortion; and excessive pressure will change the resonance characteristics of the ultrasonic transducer, causing the time domain characteristics of the detection signal to shift, thereby significantly reducing the reliability and repeatability of the detection results.

[0005] The technical solution of the present invention is: an ultrasonic detection probe fixing device, including a circular tray, and also including a circular base threaded hole and a fixing assembly, a supporting circular base is arranged on the circular tray, a connecting circular ring side column is fixedly connected to the top of the supporting circular base, a probe body is arranged inside the circular tray, the circular base threaded hole is opened inside the supporting circular base, a counterweight rod is threadedly connected to the internal thread of the circular base threaded hole, and a counterweight ring is arranged outside the counterweight rod.

[0006] Preferably, the lower end of the counterweight rod has a thread matching the supporting round base, and the counterweight rod is vertically fixed to the threaded hole of the supporting round base by means of a threaded connection.

[0007] Preferably, the inner diameter of the counterweight ring matches the outer diameter of the counterweight rod, and the number of counterweight rings can be increased or decreased as needed to adjust the center of gravity and stability of the entire device.

[0008] Preferably, a plurality of counterweight rods are provided, and the plurality of counterweight rods are evenly threadedly connected to the inside of the threaded hole of the round base.

[0009] Preferably, the fixing assembly includes a circular ring side column threaded hole, which is arranged inside the connecting circular ring side column, and the internal thread of the circular ring side column threaded hole is connected with a hexagon socket head screw.

[0010] Preferably, the connecting circular ring side column has a plurality of circular ring side column threaded holes evenly distributed along the circumference, and the hexagon socket cylindrical head screw is threadedly connected inside the circular ring side column threaded holes of the connecting circular ring side column.

[0011] The beneficial effects of the present invention are as follows: relative to an ultrasonic detection probe fixing device which cannot control the clamping force, the counterweight rod is evenly threadedly connected to the threaded hole of the round base inside the supporting round base, the number of counterweight rings is allocated according to the need for the device to clamp the counterweight, and the counterweight rings are evenly fixed to the outside of the counterweight rod to achieve compression of the device. Through the multiple counterweight design and standardized connection structure, a stable clamping force is provided to ensure that the probe fits tightly to the detection surface, reduce the influence of human factors on the detection results, thereby improving the reliability and accuracy of the detection results, and effectively preventing the problem of unstable probe clamping force and poor reliability of detection results due to manual pressure in traditional contact ultrasonic detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an implementation mode of the ultrasonic detection probe fixing device of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the central connecting ring side column and related connections; Figure 3 for Figure 1 Schematic diagram of the structure of the central support circular base and related connections; Figure 4 for Figure 1 Schematic diagram of the structure of the middle counterweight rod.

[0013] Explanation of the reference numerals: 1. round tray; 2. supporting round base; 3. connecting circular ring side column; 4. probe body; 801. threaded hole of circular ring side column; 802. hexagon socket head screw; 901. threaded hole of round base; 902. counterweight rod; 903. counterweight ring. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] See also Figure 1 - Figure 4The present invention provides an embodiment: an ultrasonic detection probe fixing device, including a circular tray 1, and also including a circular base threaded hole 901 and a fixing component, a supporting circular base 2 is arranged on the circular tray 1, a connecting circular ring side column 3 is fixedly connected to the top of the supporting circular base 2, a probe body 4 is arranged inside the circular tray 1, the circular base threaded hole 901 is opened inside the supporting circular base 2, a counterweight rod 902 is threadedly connected inside the circular base threaded hole 901, and a counterweight ring 903 is arranged outside the counterweight rod 902, the supporting circular base 2 and the connecting circular ring side column 3 arranged on the circular tray 1 play a supporting role on the internal structure, the connecting circular ring side column 3 is used to detect the unit to be detected, the counterweight rod 902 is evenly threadedly connected to the circular base threaded hole 901 inside the supporting circular base 2, the number of counterweight rings 903 is allocated according to the need of the device to compress the counterweight, and the counterweight ring 903 is evenly fixed to the outside of the counterweight rod 902 to achieve compression of the device.

[0016] See also Figure 3 - Figure 4 In this embodiment, the counterweight rod 902 has a thread matching the supporting round base 2 at the lower end, and the counterweight rod 902 is vertically fixed to the round base threaded hole 901 of the supporting round base 2 by threaded connection. The counterweight rod 902 is vertically fixed to the supporting round base 2 by threaded connection, and is evenly distributed on the threaded holes along the circumference. The counterweight rod 902 is made of metal, can provide basic counterweight and serve as a mounting carrier for the counterweight ring 903 to form a rigid support structure. The inner diameter of the counterweight ring 903 matches the outer diameter of the counterweight rod 902, and the counterweight ring 903 can be adjusted as needed. Increase or decrease the number to adjust the center of gravity and stability of the entire device. The detachable stainless steel counterweight ring 903 is a high-density, corrosion-resistant annular metal part, whose inner diameter matches the outer diameter of the counterweight rod 902. It is freely sleeved on the rod body by gravity and does not require fixings. Balance is achieved by adjusting the number of sleeves to meet the stability and durability requirements of different detection scenarios. There are several counterweight rods 902, and several counterweight rods 902 are evenly threadedly connected to the inside of the round base threaded hole 901. By setting up several counterweight rods 902, the device is more stable when tightened.

[0017] See also Figure 2In this embodiment, the fixing assembly includes a circular side column threaded hole 801, and the circular side column threaded hole 801 is opened inside the connecting circular side column 3. The internal thread of the circular side column threaded hole 801 is connected with a hexagon socket head screw 802. The probe body 4 is placed in the interior of the round tray 1. The hexagon socket head screw 802 is twisted under the condition that the hexagon socket head screw 802 is threadedly connected to the connecting circular side column 3, so that the end of the hexagon socket head screw 802 is in contact with the probe body 4 to achieve the probe body 4. Fixation, by twisting the four hexagon socket head screws 802, the probe body 4 can be evenly fixed to achieve the stability of the probe body 4 fixation, the connecting ring side column 3 has four ring side column threaded holes 801 evenly distributed along the circumference, the hexagon socket head screws 802 are threadedly connected to the inside of the ring side column threaded holes 801 of the connecting ring side column 3, and a number of counterweight rods 902 are evenly distributed on the ring side column 3 through threaded connections, arranged symmetrically in a ring, and each screw can be screwed in or out to achieve the clamping and loosening of the probe, and ensure that the probe is perpendicular to the detection surface.

[0018] When working, put the probe body 4 into the inside of the round tray 1, and twist the hexagon socket head screw 802 under the condition that the hexagon socket head screw 802 is threadedly connected to the connecting ring side column 3, so that the end of the hexagon socket head screw 802 contacts the probe body 4 to fix the probe body 4, and the four hexagon socket head screws 802 are twisted to evenly fix the probe body 4 to achieve the stability of the fixation of the probe body 4, and the counterweight rod 902 is evenly threadedly connected to the round base threaded hole 901 inside the supporting round base 2, and the number of counterweight rings 903 is allocated according to the need of the device to compress the counterweight, and the counterweight ring 903 is evenly fixed to the outside of the counterweight rod 902 to achieve compression of the device, and the connecting ring side column 3 is used to detect the units that need to be detected.

[0019] Through the above steps, the counterweight rod 902 is evenly threadedly connected to the round base threaded hole 901 inside the supporting round base 2, the number of counterweight rings 903 is allocated according to the need of the device to compress the counterweight, and the counterweight rings 903 are evenly fixed to the outside of the counterweight rod 902 to achieve compression of the device, so as to solve the problem that too low contact pressure of the ultrasonic detection probe fixing device can easily lead to an increase in the thickness of the coupling medium layer, causing sound energy attenuation and signal distortion; and excessive pressure will change the resonance characteristics of the ultrasonic transducer, causing the time domain characteristics of the detection signal to shift, thereby resulting in a significant reduction in the reliability and repeatability of the detection results.

Claims

1. An ultrasonic detection probe fixing device, comprising a round tray (1), characterized in that: It also includes a circular base threaded hole (901) and a fixing assembly, a circular support base (2) is arranged on the circular tray (1), a connecting circular ring side column (3) is fixedly connected to the top of the circular support base (2), a probe body (4) is arranged inside the circular tray (1), the circular base threaded hole (901) is opened inside the circular support base (2), a counterweight rod (902) is threadedly connected inside the circular base threaded hole (901), and a counterweight ring (903) is arranged outside the counterweight rod (902).

2. The ultrasonic detection probe fixing device according to claim 1, characterized in that: The counterweight rod (902) has a thread matching the supporting round base (2) at its lower end, and the counterweight rod (902) is vertically fixed to the round base threaded hole (901) of the supporting round base (2) by means of a threaded connection.

3. The ultrasonic detection probe fixing device according to claim 1, characterized in that: The inner diameter of the counterweight ring (903) matches the outer diameter of the counterweight rod (902), and the number of counterweight rings (903) can be increased or decreased as needed to adjust the center of gravity and stability of the entire device.

4. The ultrasonic detection probe fixing device according to claim 1, characterized in that: A plurality of counterweight rods (902) are provided, and the plurality of counterweight rods (902) are evenly threadedly connected to the inside of the threaded hole (901) of the round base.

5. The ultrasonic detection probe fixing device according to claim 1, characterized in that: The fixing assembly comprises a circular side column threaded hole (801), the circular side column threaded hole (801) is arranged inside the connecting circular side column (3), and the internal thread of the circular side column threaded hole (801) is connected with a hexagon socket head screw (802).

6. The ultrasonic detection probe fixing device according to claim 5, characterized in that: The connecting circular ring side column (3) has a plurality of circular ring side column threaded holes (801) evenly distributed along the circumference, and the hexagon socket head screws (802) are threadedly connected inside the circular ring side column threaded holes (801) of the connecting circular ring side column (3).

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