CN211122687U

CN211122687U - Ultrasonic transducer for detecting workpiece with special large wall thickness by TOFD

Info

Publication number: CN211122687U
Application number: CN201921642926.5U
Authority: CN
Inventors: 吕磊; 高云鹏; 田峰; 张艳飞; 张涛; 张雪超; 谢利明
Original assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Current assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-07-28
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a TOFD detects ultrasonic transducer of special big wall thickness work piece, including an axle I, be equipped with the mount pad on an axle I, an upper surface fixedly connected with probe of an axle I, an upper surface of an axle I is equipped with and sweeps the frame, sweep the last fixed surface of looking into the frame and be connected with the dismouting piece, the dismouting piece includes two spliced poles, the bottom of spliced pole and the last fixed surface who sweeps the frame are connected, the top fixedly connected with connecting plate of spliced pole, the upper surface of connecting plate has been seted up the through-hole and has been rotated through the through-hole is spacing, the fixed surface that is close to the bottom in the pivot I is connected with the worm wheel, the right side meshing of worm wheel has the worm. The utility model discloses, use through the cooperation between the above-mentioned structure, solved in the in-service use because the fixed mounting of scanning frame in the frame is not convenient enough, cause work efficiency to be difficult to improve in debugging the installation, waste time and energy, the problem of inconvenience is brought for the use.

Description

Ultrasonic transducer for detecting workpiece with special large wall thickness by TOFD

Technical Field

The utility model relates to an ultrasonic wave nondestructive test technical field specifically is an ultrasonic transducer of special large wall thickness work piece of TOFD detection.

Background

The ultrasonic diffraction time difference method is a method for detecting defects by means of diffraction energy obtained from the 'end angle' and 'end point' of the internal structure (mainly referring to the defects) of a test piece to be detected, and is used for detecting, quantifying and positioning the defects; the TOFD technology adopts a first-sending and a second-receiving broadband narrow pulse probe for detection, and the probes are symmetrically arranged relative to the center line of a welding seam. The transmitting probe generates non-focused longitudinal wave beams which are incident into a workpiece to be detected at a certain angle, wherein part of the beams are transmitted along the near surface and received by the receiving probe, and part of the beams are reflected by the bottom surface and received by the receiving probe. The receiving probe determines the position and the height of the defect by receiving the diffraction signal of the tip of the defect and the time difference of the diffraction signal; the traditional detection method adopts a single-probe pulse reflection method to carry out manual detection, the labor intensity of detection personnel is high, the detection efficiency is low, and the detection result is greatly influenced by the experience, familiarity and mental state of the detection personnel, so that a TOFD detection device is provided for the people, for example, an ultrasonic TOFD detection imaging method disclosed in Chinese patent CN102914593B comprises the following steps: firstly, two probes and an encoder are installed, the two probes are respectively arranged on two sides of an installation seat, one probe is used as a transmitting probe, the other probe is used as a receiving probe, the transmitting probe and the receiving probe are both attached to the surface of a shaft, and the transmitting probe, the receiving probe and the encoder are respectively connected with corresponding ports of an ultrasonic TOFD imaging detector; and then starting an ultrasonic TOFD imaging detector to detect the mounting base, wherein when the ultrasonic TOFD imaging detector detects the mounting base, the positions of a transmitting probe and a receiving probe are kept unchanged, a shaft rotates freely, the ultrasonic TOFD imaging detector records echo signals and position information thereof, and then the echo signals are subjected to imaging display. The invention can quickly, effectively and comprehensively detect the mounting seat, reduces the labor intensity, improves the detection efficiency, has simple and easy operation and is suitable for detecting solid shaft workpieces; however, in the actual use process, the fixed installation of the scanning frame on the rack is not convenient enough, so that the working efficiency is difficult to improve in debugging and installation, time and labor are wasted, and inconvenience is brought to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ultrasonic transducer of special big wall thickness work piece is detected to TOFD improves traditional device, has solved the problem among the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the ultrasonic transducer for detecting the workpieces with the special large wall thickness by the TOFD comprises a first shaft, wherein a mounting seat is arranged on the first shaft, a probe is fixedly connected to the upper surface of the first shaft, a scanning frame is arranged on the upper surface of the first shaft, and a dismounting part is fixedly connected to the upper surface of the scanning frame.

The disassembly and assembly part comprises two connecting columns, the bottoms of the connecting columns are fixedly connected with the upper surface of a scanning frame, the tops of the connecting columns are fixedly connected with a connecting plate, the upper surface of the connecting plate is provided with a through hole and is provided with a first rotating shaft in a limiting rotation mode through the through hole, the surface of the first rotating shaft close to the bottom is fixedly connected with a worm gear, the right side of the worm gear is meshed with a worm, the front end and the rear end of the worm are rotatably connected with a fixed seat through a pin shaft, the top of the fixed seat is fixedly connected with the lower surface of the connecting plate, the surface of the first rotating shaft close to the top is fixedly connected with a first gear, the two sides of the first gear are respectively meshed with a second gear, the inner wall of the second gear is fixedly connected with a second rotating shaft, the bottom of the second rotating shaft is in, the rear side of curb plate rotates through the round pin axle and is connected with the dwang, the one end fixedly connected with sliding block of dwang, the surface and the cylindrical lower surface sliding connection in inclined plane of sliding block, the other end fixedly connected with arm lock of dwang.

Preferably, the front end of the pin shaft on the worm is fixedly connected with a knob, and the surface of the knob is provided with anti-skid grains.

Preferably, the fixed surface of dwang is connected with the extension spring, keep away from the one end of dwang and the side fixed connection of curb plate on the extension spring.

Preferably, the sliding block is a spherical sliding block.

Preferably, the surface of the clamping arm is provided with an anti-skid bulge, and the anti-skid bulge is wrapped by a rubber layer.

Compared with the prior art, the beneficial effects of the utility model are as follows:

through the arrangement of the detachable piece, the installation between the scanning frame and the rack is more convenient and quicker, time and labor are saved, and the installation is firm enough;

the utility model drives the worm to rotate manually, and the worm wheel meshed with the worm drives the rotating shaft I to rotate in a limiting way on the connecting plate synchronously; the first gear rotates synchronously along with the rotating shaft, the two gears meshed with the first gear synchronously drive the second rotating shaft on the inner wall of the first gear to rotate, the inclined cylinder coaxially rotates along with the second rotating shaft after the second rotating shaft rotates, and after a flange surface on the lower surface of the inclined cylinder is contacted with the surface of the sliding block, the rotating rod can rotate on the side plate to enable the sliding block to be at the lowest position;

thirdly, the utility model discloses a cooperation between the above-mentioned structure is used, has solved because the fixed mounting of scanning frame in the frame is not convenient enough in the in-service use, causes work efficiency to be difficult to improve in debugging the installation, wastes time and energy, brings inconvenient problem for the use.

Drawings

Fig. 1 is a front view of the structure of the present invention;

fig. 2 is a front view of the first gear of the present invention.

In the figure: 1-shaft I, 2-mounting seat, 3-probe, 4-scanning frame, 5-dismounting part, 6-connecting column, 7-connecting plate, 8-rotating shaft I, 9-worm wheel, 10-worm, 11-fixing seat, 12-gear I, 13-gear II, 14-rotating shaft II, 15-inclined plane cylinder, 16-side plate, 17-rotating rod, 18-sliding block, 19-clamping arm, 20-knob and 21-tension spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: an ultrasonic transducer for TOFD detection of a workpiece with a special large wall thickness comprises a first shaft 1, wherein a mounting base 2 is arranged on the first shaft 1, a probe 3 is fixedly connected to the upper surface of the first shaft 1, the probe 3 comprises an ultrasonic transducer and a wedge block, the ultrasonic transducer is connected with the wedge block through a coupling agent, a scanning frame 4 is arranged on the upper surface of the first shaft 1, the scanning frame 4 is adsorbed on the first shaft 1 through a magnetic suction wheel on the bottom of the scanning frame, and the device is fully disclosed in a description of a reference file provided in the background technology, so that the description is omitted; the upper surface of the scanning frame 4 is fixedly connected with the dismounting part 5, and the mounting between the scanning frame 4 and the rack is more convenient and faster, time-saving and labor-saving and is sufficiently firm through the arrangement of the dismounting part 5.

The dismounting part 5 comprises two connecting columns 6, and the connecting columns 6 play a role in fixed connection; the bottom of the connecting column 6 is fixedly connected with the upper surface of the scanning frame 4, the top of the connecting column 6 is fixedly connected with a connecting plate 7, the upper surface of the connecting plate 7 is provided with a through hole and is limited to rotate through the through hole to form a rotating shaft I18, the surface, close to the bottom, of the rotating shaft I18 is fixedly connected with a worm wheel 9, the right side of the worm wheel 9 is meshed with a worm 10, the front end of a pin shaft on the worm 10 is fixedly connected with a knob 20, the surface of the knob 20 is provided with anti-skid grains, the pin shaft on the worm 10 is convenient to rotate and drive through the arrangement of the knob 20, and the anti-; the front end and the rear end of the worm 10 are rotatably connected with a fixed seat 11 through a pin shaft, the top of the fixed seat 11 is fixedly connected with the lower surface of the connecting plate 7, a first gear 12 is fixedly connected to the surface, close to the top, of the first rotating shaft 18, a second gear 13 is meshed with the two sides of the first gear 12, a second rotating shaft 14 is fixedly connected to the inner wall of the second gear 13, the worm 10 is driven to rotate manually, and a worm wheel 9 meshed with the worm 10 synchronously drives the first rotating shaft 18 to perform limiting rotation on the connecting plate 7; the first gear 12 rotates synchronously along with the first rotating shaft 18, the second gear 13 meshed with the first gear 12 drives the second rotating shaft 14 on the inner wall of the first gear to rotate synchronously along with the first rotating shaft 14, the inclined cylinder 15 rotates coaxially along with the second rotating shaft 14, when a flange surface on the lower surface of the inclined cylinder 15 is contacted with the surface of the sliding block 18, the rotating rod 17 rotates on the side plate 16 to enable the sliding block 18 to be at the lowest position, at the moment, the rack is clamped oppositely through the clamping arms 19 on the two rotating rods 17, because the worm 10 and the worm wheel 9 have a reverse locking effect, namely the worm wheel 9 cannot drive the worm 10 to rotate, when the two clamping arms 19 and the rack are clamped, the fixing between the scanning rack 4 and the rack is realized, and when the position is required to be disassembled for position adjustment, the worm 10 only needs to rotate reversely; the bottom of the second rotating shaft 14 is limited to rotate on the upper surface of the connecting plate 7, the top of the second rotating shaft 14 is fixedly connected with an inclined plane cylinder 15, the upper surface of the connecting plate 7 is fixedly connected with a side plate 16, the rear side of the side plate 16 is rotatably connected with a rotating rod 17 through a pin shaft, the surface of the rotating rod 17 is fixedly connected with a tension spring 21, one end, far away from the rotating rod 17, of the tension spring 21 is fixedly connected with the side surface of the side plate 16, through the arrangement of the tension spring 21, as shown in fig. 2, the concave edge surface on the inclined plane cylinder 15 is in contact with the surface of the sliding block 18, the rotating rod 17 can be reset to rotate under the elastic force action of; one end of the rotating rod 17 is fixedly connected with a sliding block 18, the sliding block 18 is a spherical sliding block, and the sliding of the sliding block 18 on the inclined surface cylinder 15 is smoother through the arrangement of the spherical sliding block; the surface of sliding block 18 and inclined plane cylinder 15's lower surface sliding connection, the other end fixedly connected with arm lock 19 of dwang 17, the surface of arm lock 19 is equipped with the non-skid stud, and all wraps up the rubber layer, through the non-skid stud's setting, can produce more area of contact with the frame, and the setting on rubber layer can increase frictional force on it, and then improves the anti-skidding effect, uses more safety and stability.

The working principle is as follows: when the ultrasonic transducer for detecting the workpiece with the special large wall thickness by the TOFD is used, the installation between the scanning frame 4 and the rack is more convenient and quicker, time-saving and labor-saving and is firm enough by the arrangement of the dismounting part 5; the worm 10 is driven to rotate manually, and the worm wheel 9 meshed with the worm 10 synchronously drives the first rotating shaft 18 to rotate on the connecting plate 7 in a limiting manner; the first gear 12 rotates synchronously along with the first rotating shaft 18, the second gear 13 meshed with the first gear 12 drives the second rotating shaft 14 on the inner wall of the first gear to rotate synchronously along with the first rotating shaft 14, the inclined cylinder 15 rotates coaxially along with the second rotating shaft 14, when a flange surface on the lower surface of the inclined cylinder 15 is contacted with the surface of the sliding block 18, the rotating rod 17 rotates on the side plate 16 to enable the sliding block 18 to be at the lowest position, at the moment, the rack is clamped oppositely through the clamping arms 19 on the two rotating rods 17, because the worm 10 and the worm wheel 9 have a reverse locking effect, namely the worm wheel 9 cannot drive the worm 10 to rotate, when the two clamping arms 19 and the rack are clamped, the fixing between the scanning rack 4 and the rack is realized, and when the position is required to be disassembled for position adjustment, the worm 10 only needs to rotate reversely; through the cooperation use between the above-mentioned structure, solved in the in-service use because the fixed mounting of scanning the frame in the frame is not convenient enough, cause work efficiency to be difficult to improve in debugging the installation, waste time and energy, the problem of inconvenience is brought for the use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an ultrasonic transducer of special big wall thickness work piece of TOFD, includes axle one (1), be equipped with mount pad (2) on axle one (1), the last fixed surface of axle one (1) is connected with probe (3), the upper surface of axle one (1) is equipped with scanning frame (4), its characterized in that: the upper surface of the scanning frame (4) is fixedly connected with a dismounting part (5);

the dismounting part (5) comprises two connecting columns (6), the bottom of each connecting column (6) is fixedly connected with the upper surface of the scanning frame (4), the top of each connecting column (6) is fixedly connected with a connecting plate (7), the upper surface of each connecting plate (7) is provided with a through hole and is provided with a first rotating shaft (8) in a limiting rotation mode through the through hole, the first rotating shaft (8) is fixedly connected with a worm wheel (9) close to the bottom, the right side of the worm wheel (9) is meshed with a worm (10), the front end and the rear end of the worm (10) are rotatably connected with a fixing seat (11) through a pin shaft, the top of the fixing seat (11) is fixedly connected with the lower surface of the connecting plate (7), the first rotating shaft (8) is fixedly connected with a first gear (12) close to the top, two sides of the first gear (12) are both meshed with a second gear (13), and the inner wall of, the bottom of pivot two (14) is in the spacing rotation of the upper surface of connecting plate (7), the top fixed connection of pivot two (14) has inclined plane cylinder (15), the last fixed surface of connecting plate (7) is connected with curb plate (16), the rear side of curb plate (16) is connected with dwang (17) through the round pin axle rotation, the one end fixedly connected with sliding block (18) of dwang (17), the surface of sliding block (18) and the lower surface sliding connection of inclined plane cylinder (15), the other end fixedly connected with arm lock (19) of dwang (17).

2. The ultrasonic transducer for TOFD detection of a workpiece with a special large wall thickness according to claim 1, wherein: the front end of the pin shaft on the worm (10) is fixedly connected with a knob (20), and anti-skid grains are arranged on the surface of the knob (20).

3. The ultrasonic transducer for TOFD detection of a workpiece with a special large wall thickness according to claim 1, wherein: the fixed surface of dwang (17) is connected with extension spring (21), the one end of keeping away from dwang (17) on extension spring (21) and the side fixed connection of curb plate (16).

4. The ultrasonic transducer for TOFD detection of a workpiece with a special large wall thickness according to claim 1, wherein: the sliding block (18) is a spherical sliding block.

5. The ultrasonic transducer for TOFD detection of a workpiece with a special large wall thickness according to claim 1, wherein: the surface of the clamping arm (19) is provided with anti-skid protrusions, and the rubber layer is wrapped on the anti-skid protrusions.