CN204963835U - Crack depth automatic checkout device - Google Patents

Abstract

The utility model relates to a crack depth automatic checkout device belongs to detection area. Crack depth automatic checkout device, which comprises a bracket, the support comprises left end support, right -hand member support, fore -stock and after -poppet, be equipped with transmission and displacement sensor on the support, transmission includes transducer support, slide rail, hold -in range and gear, displacement sensor is including the acquisition circuit, encoder, the encoder axle that connect gradually, the slide rail erects between left end support and right -hand member support, a transducer seat cover is established on the slide rail, the front end of transducer support passes through the rackwork and is connected with the hold -in range, 1 is installed in the inboard of fore -stock through 2 gears to the hold -in range the geared sleeve is established at the encoder epaxially. The utility model discloses measuring accuracy height, design compactness, easy operation, high, the wide applicability of work efficiency.

Description

A crack depth automatic detection device

technical field

The utility model relates to a detection device, in particular to a crack depth automatic detection device, which belongs to the detection field.

Background technique

Most of the existing crack depth detection measures the distance between the transducers using simple measuring tools such as a ruler after testing the ultrasonic signal. There are also simple professional measuring devices, as shown in Figure 1, the initial distance between the transmitting transducer and the receiving transducer on this device in the prior art is 50mm, and the step distance is also 50mm, that is to say, the transmitting transducer The transducer and the receiving transducer can only move symmetrically, and the distance between them can only be one of 50, 100, 150, 200mm, not any distance. For example, Chinese patent 201220521827.3 discloses a landslide crack measuring device, which includes a landslide crack measuring ruler and a landslide crack measuring identification nail. The top surface of the steel nail is provided with a cross wire, and an annular groove is provided at the bottom of the top surface of the steel nail; its disadvantages are: a measuring ruler is used, which is easy to cause reading errors, inaccurate measurement, and low work efficiency.

Utility model content

The purpose of the utility model is to provide an automatic detection device for crack depth with simple operation, high test precision, high work efficiency and wide application in view of the deficiencies in the prior art.

The technical scheme for solving the problem of the utility model is: provide an automatic detection device for crack depth, including a bracket, the bracket is composed of a left end bracket, a right end bracket, a front bracket and a rear bracket, and a transmission device and a displacement sensor are arranged on the bracket , the transmission device includes a transducer support, a slide rail, a synchronous belt and a gear, the displacement sensor includes an acquisition circuit, an encoder, and an encoder shaft connected in sequence, and the slide rail is installed between the left end bracket and the right end bracket Between, the transducer support is sleeved on the slide rail, the front end of the transducer support is connected with the timing belt through the rack mechanism, and the timing belt is installed on the inner side of the front bracket through 2 gears, 1 The two gears are sleeved on the encoder shaft.

Further, the rear bracket is provided with several ball-ball screws, which are used to stop the transducer support at several fixed positions, and are used when the time-distance method is used for detection.

Preferably, the number of the ball screw is four.

Further, the bracket is provided with 3 positioning nails, one of which is set at the bottom end of the left end bracket, and the other two positioning nails are set at the bottom end of the right end bracket, and the positioning nails are used to support The entire test frame is in contact with the surface of the component under test. Since the surface of the component under test is uneven, a structure of three positioning nails is used to ensure good contact between the bracket and the surface of the component under test.

Further, the encoder is provided with an encoder cover, and the encoder cover is used to protect the encoder.

Further, there are two slide rails, two horizontal through holes parallel to each other are provided on the transducer support, and each of the two slide rails passes through one horizontal through hole.

Further, the slide rail is cylindrical, the horizontal through hole is a circular hole, and the diameter of the circular hole is larger than the outer diameter of the slide rail, which facilitates the transducer support to slide on the slide rail.

Further, the transducer support is used for installing the transducer.

Further, the detection devices are used in pairs, the left end brackets of the two detection devices are relatively fixed on both sides of the crack to be measured by positioning nails, and the transducer supports of the two detection devices are installed There is a transducer, and the transducer and the displacement sensor are respectively connected with the acquisition instrument.

The beneficial effects of the utility model are:

1. High test accuracy: The distance between the transducers of the utility model is continuously adjusted, which overcomes the limitation that the distance in the prior art cannot be any value; The error improves the test accuracy;

2. Compact design, simple operation and high work efficiency: only need to move the transducer to realize automatic calculation of measurement, abandoning the defect of manual reading and calculation in the prior art, significantly shortening the measurement time and significantly improving work efficiency ;

3. Wide range of application: The transducer in the utility model can not only move continuously through the transducer support, but also can be positioned through the bead screw, and can be detected by both the time-distance method and the reverse-phase method.

Description of drawings

Fig. 1 is the crack depth detecting device in the prior art;

Fig. 2 is a top view of the crack depth automatic detection device described in the utility model;

Fig. 3 is the bottom view of the crack depth automatic detection device shown in Fig. 2;

Fig. 4 is a left view of the crack depth automatic detection device shown in Fig. 2;

Fig. 5 is a schematic diagram of the combined use state of the crack depth automatic detection device shown in Fig. 2;

In the figure: 1-bracket, 11-left end bracket, 12-right end bracket, 13-front bracket, 14-rear bracket; 2-transmission device, 21-transducer support, 22-slide rail, 23-synchronous belt, 24-gear; 3-displacement sensor, 31-encoder shaft, 32-encoder cover; 4-bead screw; 5-positioning nail; 6-transducer; 7-collector; 8-crack to be measured.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

As shown in Fig. 2-Fig. 4, a kind of crack depth automatic detection device comprises bracket 1, and described bracket 1 is made up of left end bracket 11, right end bracket 12, front bracket 13 and rear bracket 14, and described bracket 1 is provided with Transmission device 2 and displacement sensor 3, described transmission device 2 comprises transducer support 21, slide rail 22, synchronous belt 23 and gear 24, and described displacement sensor 3 comprises the acquisition circuit (not shown in the figure) connected in sequence, An encoder (not shown in the figure), an encoder shaft 31, the slide rail 22 is erected between the left end support 11 and the right end support 12, the transducer support 21 is sleeved on the slide rail 22, the transducer The front end of the energy device support 21 is connected with the synchronous belt 23 through a rack mechanism (not shown in the figure), and the synchronous belt 23 is installed on the inner side of the front bracket 13 through two gears 24, and one of the gears 24 is sleeved on the Encoder shaft 31.

The rear bracket 14 is provided with several wave ball screws 4 .

The number of the wave bead screws 4 is four.

The bracket 1 is provided with three positioning nails 5 , one positioning nail 5 is arranged at the bottom of the left end bracket 11 , and the other two positioning nails 5 are arranged at the bottom of the right end bracket 12 .

The encoder is provided with an encoder cover 32 .

There are two slide rails 22 , and two horizontal through holes parallel to each other are provided on the transducer support 21 , and each of the two slide rails 22 passes through one horizontal through hole.

The slide rail 22 is cylindrical, and the horizontal through hole is a circular hole, and the diameter of the circular hole is larger than the outer diameter of the slide rail 22 .

The transducer support 21 is used for installing the transducer 6 .

As shown in Figure 5, the detection devices are used in pairs, the left end brackets 11 of the two detection devices are relatively fixed on both sides of the crack 8 to be measured by positioning nails 5, and the energy conversion of the two detection devices A transducer 6 is installed in the instrument support 21, and the transducer 6 and the displacement sensor 3 are respectively connected with the acquisition instrument 7.

The working process of the present utility model is:

The 2 crack depth automatic detection devices described in the present utility model are relatively spliced together, and the splicing edges of the two detection devices, that is, the positioning nails of the left end brackets of the two detection devices are stuck on both sides of the crack to be measured , and then move the transducer supports on the two test devices in opposite directions. When the transducer supports slide left and right on the slide rail, it will drive the timing belt, and the timing belt will drive the gear and the encoder shaft to rotate, and the encoder shaft will rotate. When the pulse signal is generated by the encoder, the acquisition instrument converts it into a displacement signal and uploads it to the host computer. The host computer calculates the depth value of the crack in real time according to the collected ultrasonic signal and displacement signal, so as to realize the automatic measurement of the crack depth.

The utility model is not limited to the above-mentioned embodiments. Without departing from the essential content of the utility model, any deformation, improvement and replacement conceivable by those skilled in the art all fall within the protection scope of the utility model.

Claims (9)

1. A kind of crack depth automatic detection device, comprises support, it is characterized in that, described support is made up of left end support, right end support, front support and rear support, described support is provided with transmission device and displacement sensor, and described transmission device It includes a transducer support, a slide rail, a synchronous belt and a gear. The displacement sensor includes an acquisition circuit, an encoder, and an encoder shaft connected in sequence. The slide rail is erected between the left end bracket and the right end bracket. The transducer support is set on the slide rail, the front end of the transducer support is connected with the timing belt through the rack mechanism, the timing belt is installed on the inner side of the front bracket through two gears, and one of the gear sleeve on the encoder shaft. 2. The crack depth automatic detection device according to claim 1, characterized in that, the rear bracket is provided with several ball-bead screws. 3. The crack depth automatic detection device according to claim 2, characterized in that, the number of said wave bead screws is four. 4. The crack depth automatic detection device according to claim 1, characterized in that, the bracket is provided with 3 positioning nails, one of which is arranged at the bottom of the left end bracket, and the other 2 positioning nails. The nail is arranged at the bottom end of the right end bracket. 5. The crack depth automatic detection device according to claim 1, characterized in that the encoder is provided with an encoder cover. 6. The crack depth automatic detection device according to claim 1, characterized in that there are two slide rails, two horizontal through holes parallel to each other are provided on the transducer support, and the two horizontal through holes are parallel to each other. Each slide rail passes through a horizontal through hole. 7. The crack depth automatic detection device according to claim 6, wherein the slide rail is cylindrical, the horizontal through hole is a round hole, and the diameter of the round hole is larger than the outer diameter of the slide rail. 8. The crack depth automatic detection device according to claim 1, characterized in that, the transducer support is used for installing a transducer. 9. The crack depth automatic detection device according to claim 1, characterized in that, the detection devices are used in pairs, and the left end brackets of the two detection devices are relatively fixed on both sides of the crack to be measured by positioning nails , Transducers are installed in the transducer supports of the two detection devices, and the transducers and displacement sensors are respectively connected with the acquisition instrument.