CN211856460U - Probe constant pressure spring draw-in groove instrument - Google Patents

Abstract

The utility model provides a probe constant pressure spring clamping groove tool, which is used on a probe for non-metal ultrasonic detection, and comprises a spring and a sleeve for accommodating the spring; the side wall of the sleeve is provided with a strip-shaped clamping groove; With scale ruler. In the probe constant pressure spring slotting tool of the utility model, one end of the spring is sleeved on the end of the probe. During the detection process, when the probe is in contact with the detection surface, the degree of compression of the spring is kept unchanged by the scale scale, so that the probe Constant pressure ensures the accuracy of ultrasonic detection.

Description

A probe constant pressure spring slotting tool

technical field

The utility model belongs to the technical field of non-metal ultrasonic detection, and relates to a probe constant pressure spring clamping tool for ultrasonic wave amplitude and frequency detection in non-metal ultrasonic detection.

Background technique

Non-metallic ultrasonic testing is widely used in concrete defect detection in the engineering field.

In the existing concrete defect detection, the detection of ultrasonic wave amplitude and frequency parameters is very important.

In the ultrasonic wave amplitude and frequency test, there is a layer of colloidal material between the coupling between the probe and the test surface, such as butter or Vaseline. When the same measuring point is detected, its amplitude and frequency value change with the pressure of the probe, because the ultrasonic wave will produce large attenuation and frequency change when it propagates in the colloidal material. This change is caused by the thickness of the colloidal material. Eliminating the thickness variation of this colloidal material reduces this chance error. The method to reduce the thickness change of the colloidal material is to keep the change of the pressure value of the probe small or constant. The material will be extruded more, and the thickness will become smaller. Keeping the same pressure, the thickness of the glue will be basically the same, which will reduce the change in the thickness of the glue material, which affects the detection accuracy of the amplitude and frequency parameters.

Therefore, it is necessary to provide a new constant pressure spring clamping tool for probes used in non-metal ultrasonic testing to provide constant pressure, thereby solving the above-mentioned technical problems.

Utility model content

In order to solve the above technical problems, the utility model provides a probe constant pressure spring clamping groove tool, which can keep the probe constant pressure, thereby effectively improving the detection accuracy of non-metal ultrasonic waves.

The constant pressure spring clamping groove tool for a probe of the utility model is used on a probe for non-metal ultrasonic testing, and comprises a spring and a sleeve for accommodating the spring; the side wall of the sleeve is provided with a strip-shaped clamping groove; the outer side of the sleeve is provided with a scale ruler. The graduated scale is used to measure the spring compression distance so that the spring compression force can be controlled according to the spring compression distance.

As a further improvement of the present invention, one end of the spring is fixedly connected to the bottom of the sleeve.

As a further improvement of the present invention, the bottom of the sleeve is provided with a screw hole, one end of the spring is sleeved on the bolt, and the bolt is locked in the screw hole. As a further improvement of the present utility model: a rod handle is connected to the bottom of the sleeve.

As a further improvement of the present utility model: the sleeve is made of transparent material. This makes it easier to observe the position of the compressed distance of the spring on the scale.

As a further improvement of the present utility model, the scale scale is pasted on the side wall of the sleeve through self-adhesive.

As a further improvement of the present utility model, there are two constant pressure spring clamping groove tools for the probe, which are respectively connected to the transmitting probe and the receiving probe.

beneficial effect

In the probe constant pressure spring slotting tool of the utility model, one end of the spring is sleeved on the end of the probe, and in the process of detection, when the probe contacts the detection surface, the compression degree of the spring is kept unchanged, so that the probe constant pressure, The ultrasonic detection accuracy is guaranteed.

Description of drawings

Fig. 1 is the structural schematic diagram of the constant pressure spring slotting tool of the probe of the present invention.

FIG. 2 is a schematic diagram of the combination of the probe constant pressure spring slotting tool and the probe according to the present invention.

reference number

Probe constant pressure spring clip tool 10, sleeve 1, clip slot 11, fixing bolt 12, spring 2, shank 3, scale scale 4, probe 20, probe terminal 22, probe lead 21.

Detailed ways

The technical solutions of the present utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

As shown in FIG. 1 , the probe constant pressure spring slotting tool 10 of the present invention is composed of a sleeve 1 , a spring 2 , a handle 3 and a scale 4 . Among them, the sleeve 1 is a cylindrical structure with one end open, the spring 2 is located in the sleeve 1, the bottom of the sleeve 1 is provided with a screw hole (not shown in the figure), and one end of the spring is sleeved on the top of the bolt 12 to be fixed, and then the bolt 12 is locked by the nut after passing through the screw hole, so as to realize the fixation of the spring and the sleeve. tight. In a specific embodiment, in the relaxed state, the spring 2 protrudes from the sleeve 1 . In some embodiments, in the relaxed state of the spring 2 , the length of the spring 2 is greater than twice the height of the sleeve 1 . In this way, when the spring 2 is compressed to a certain degree, it can also be ensured that the probe terminal 22 located in the spring 2 will not contact the sleeve 1 . In some embodiments, in the relaxed state, the length of the spring can be selected to be between 20mm-50mm. The lever handle 3 is connected to the outer wall of the bottom of the sleeve 1 and is used for hand-holding during operation. The scale scale 4 is fixed on the side wall of the sleeve 1, and its direction is parallel to the direction of the spring 2, and is used for measuring and marking the compressed distance of the spring 2. In a specific embodiment, the scale scale 4 is fixed on the side wall of the sleeve 1 by sticking with self-adhesive.

There is an elongated slot 11 on the side wall at the open end of the sleeve 2. When the probe constant pressure spring slot tool 10 is connected to the probe 20, the wire 21 connected to the probe can be removed from the spring 2 and the sleeve. The inside of the barrel 1 is located in the slot 11 , so that it does not affect the expansion and contraction of the spring 2 .

Usually, the compressed state of the spring 2 can be observed through the slot 11 of the sleeve 1, but in order to more conveniently correspond to the relationship between the compression distance of the spring 2 and the scale 4, the sleeve 1 can be made of transparent material.

In some embodiments, there are two probe constant pressure spring clamping groove tools 10 of the present invention, which are used together and are respectively connected to the transmitting probe and the receiving probe. Moreover, the material of the spring 20 is the same as that of the transmitting and receiving probes.

In specific use, as shown in FIG. 2 , the top of the spring 2 is sleeved on the tail of the probe 20 , that is, on the terminal 22 of the probe, so that the top of the spring 2 is against the probe 20 , and the wire 21 is placed in the slot of the sleeve 1 . within 11. When carrying out the test, first debug the spring pressure, observe the display of the test signal on the ultrasonic instrument, determine the appropriate pressure value, and write down the scale value of the compression amount of the spring 2 on the scale 4. After the test of each measuring point, let the spring 2 The amount of compression is maintained at this scale value of the scale 4 to ensure that the sound wave amplitude does not have errors due to changes in probe pressure during testing.

The above are only the embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and accompanying drawings of the present invention, or directly or indirectly applied to other Relevant technical fields are similarly included in the scope of patent protection of the present invention.

Claims (7)

1. A probe constant pressure spring slotting tool, used on the probe of non-metallic ultrasonic detection, is characterized in that: it comprises a spring and a sleeve that accommodates the spring; the side wall of the sleeve is provided with a strip slot; the sleeve There is a graduated scale on the outside. 2 . The probe constant pressure spring slotting tool according to claim 1 , wherein one end of the spring is fixedly connected to the bottom of the sleeve. 3 . 3. The probe constant pressure spring slotting tool according to claim 2, wherein the bottom of the sleeve is provided with a screw hole, one end of the spring is sleeved on the bolt, and the bolt is locked in the screw hole. 4 . The probe constant pressure spring slotting tool according to claim 1 , wherein a rod handle is connected to the bottom of the sleeve. 5 . 5 . The probe constant pressure spring slotting tool according to claim 1 , wherein the sleeve is made of transparent material. 6 . 6 . The probe constant pressure spring slotting tool according to claim 1 , wherein the scale scale is pasted on the side wall of the sleeve by self-adhesive. 7 . 7 . The probe constant pressure spring clipping tool according to claim 1 , wherein the probe constant pressure spring clipping tool is two, which are respectively connected to the transmitting probe and the receiving probe. 8 .

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