CN-121805424-B - Ultrasonic C scanning device with U-shaped structure

CN121805424BCN 121805424 BCN121805424 BCN 121805424BCN-121805424-B

Abstract

The invention relates to the technical field of ultrasonic C scanning, and discloses an ultrasonic C scanning device of a U-shaped structure, which comprises two nozzles and corresponding mounting seats which are oppositely arranged, wherein a U-shaped supporting unit is formed by connecting two rigid supporting arms through a flexible connecting pipe, a pipeline channel is formed inside the U-shaped supporting unit, a locking structure comprises a ball head assembly, a column head assembly and a locking assembly, the ball head assembly, the column head assembly and the locking assembly comprise sliding lock tongues, inner supporting rods, connectors and joint arms with radial lock holes and axial lock holes, the connectors of the ball head assembly can rotate in multiple directions and are fixed with one rigid supporting arm, the connectors of the column head assembly can rotate in one direction and are fixed with the other rigid supporting arm, the locking assembly comprises locking screw rods with opposite rotation directions at two ends and two locking nuts, and the inner supporting rods are driven to jack the lock tongues to fix the connectors when the locking screw rods are rotated, and the two assemblies are bonded and locked. According to the invention, the three rotary joints are locked through a single rotary action, so that the relative postures of the two nozzles are directly fixed, the operation action is simplified, and the operation efficiency is improved.

Inventors

CHEN YU
LIU JIALIN
PAN XIAOSONG
CHEN LING
CHEN JIAN

Assignees

成都联科航空技术有限公司

Dates

Publication Date: 20260512
Application Date: 20260310

Claims (9)

1. The ultrasonic C scanning device with the U-shaped structure comprises two nozzles which are oppositely arranged, and the two nozzles are respectively connected to corresponding mounting seats; The U-shaped supporting unit is formed by connecting two hollow rigid supporting arms through flexible connecting pipes, two ends of the U-shaped supporting unit are respectively connected with corresponding mounting seats, and the inside of the U-shaped supporting unit is used as a pipeline channel; the locking structure comprises a ball head assembly, a column head assembly and a locking assembly, wherein the ball head assembly and the column head assembly comprise: One end of the joint arm is provided with a radial lock hole, the other end is provided with an axial lock hole; The lock tongue is arranged in the axial lock hole in a sliding way; the end part of the lock tongue is provided with an eccentric lock hole with an axis deviating from the center, one end of the inner support rod is propped against the bottom of the eccentric lock hole, and the other end of the inner support rod extends into the radial lock hole; The ball head component comprises a ball head component, a connecting head component, a column head component and a locking head component, wherein the ball head component is fixedly connected with one rigid supporting arm, and the other rigid supporting arm is fixedly connected with the other rigid supporting arm; The locking assembly comprises a locking screw rod with threads at two ends and opposite in rotation directions and two locking nuts, and the two locking nuts are respectively arranged in a radial lock hole of one joint arm in a sliding manner and are matched with the locking screw rod; the locking nut is characterized in that a locking inclined plane is arranged on one end side wall of the locking nut, a first limiting inclined plane which is abutted against the corresponding locking inclined plane is arranged at the end part of an inner supporting rod in the ball head assembly, a second limiting inclined plane which is abutted against the corresponding locking inclined plane is arranged at the end part of the inner supporting rod in the column head assembly, so that when the screw rod is rotated to enable the two locking nuts to move in opposite directions, the two inner supporting rods are driven to abut against the lock tongue to fix the connector, and the ball head assembly and the column head assembly are mutually attached and locked.
2. The ultrasonic C scanning device with the U-shaped structure according to claim 1, wherein the connector is provided with a spherical connecting part in the ball head assembly, the lock tongue and the cover body are provided with spherical holes matched with the spherical connecting part, the connector is provided with a round connecting part in the column head assembly, the lock tongue and the cover body are provided with flat holes matched with the round connecting part, and the axis of the round connecting part is perpendicular to the axis of the lock tongue.
3. The ultrasonic C-scanning device with the U-shaped structure according to claim 1, wherein the locking assembly further comprises a locking knob, one end of the locking screw rod is provided with a hexagonal head, and the locking knob is sleeved on the locking screw rod and is provided with a hexagonal hole matched with the hexagonal head.
4. The ultrasonic C-scan apparatus of a U-shaped structure according to any one of claims 1 to 3, wherein the nozzle is connected to the mounting base by a quick-change structure, the quick-change structure comprises a lock plate, a pawl and a lock post, the lock post is fixedly provided on the nozzle, the lock plate is rotatably connected to the mounting base, a spiral lock groove is provided on one side of the lock plate, the lock groove is provided with a notch communicating with an outer circumferential surface so that the lock post can be installed inside the lock groove, the lock plate can be compressed when rotated in one direction, a ratchet is provided on the outer circumferential surface of the lock plate, and the pawl is provided on one side of the lock plate and connected to the mounting base so as to limit the reverse rotation of the lock plate by cooperation of the pawl and the ratchet when the lock post is compressed.
5. The ultrasonic C-scanning device with the U-shaped structure according to claim 4, wherein the ratchet covers part of the outer peripheral surface of the lock disc, and a limit block capable of abutting against two ends of the pawl is arranged at a part of the outer peripheral surface of the lock disc, which is free of the ratchet.
6. The ultrasonic C scanning device with the U-shaped structure according to claim 4, wherein the installation seat is fixedly provided with a rotating shaft, the lock disc is sleeved on the rotating shaft, two annular grooves are axially arranged on the rotating shaft at intervals, a spring plunger capable of being matched with the annular grooves is arranged inside the lock disc, the ratchet is matched with the pawl when the spring plunger stretches into one annular groove, and the ratchet is dislocated with the pawl when the spring plunger stretches into the other annular groove.
7. An ultrasonic C-scan apparatus of U-shaped configuration according to any one of claims 1-3, wherein the front end of the nozzle is provided with an anti-collision ring.
8. An ultrasonic C-scan apparatus of U-shaped construction according to any one of claims 1-3, wherein one side of the nozzle is connected with a universal bamboo joint tube for blowing air.
9. An ultrasonic C-scan device of U-shaped configuration according to any of claims 1-3, wherein said flexible connection tube is a bellows.

Description

Ultrasonic C scanning device with U-shaped structure Technical Field The invention relates to the technical field of ultrasonic C scanning, in particular to an ultrasonic C scanning device with a U-shaped structure. Background Ultrasonic C-scan detection is one of the key technologies for detecting internal defects of materials in the industrial field. The ultrasonic penetration method uses one probe to transmit ultrasonic waves, and the other probe receives signals penetrating through a detected workpiece, so that the ultrasonic penetration method has remarkable advantages for detecting composite materials with larger attenuation coefficients (such as aviation composite material components), and can effectively evaluate defects of layering, degumming, porosity and the like in the materials. In order to meet the requirement of automatic detection, at present, a mechanical scanning arm is often adopted to carry a double-nozzle structure to realize the opposite penetration detection, wherein one nozzle is provided with an ultrasonic transmitting probe, the other nozzle is provided with an ultrasonic receiving probe, the two nozzles are respectively arranged at two sides of a detected workpiece, an ultrasonic coupling channel is formed by spraying water columns, and the movement of the mechanical scanning arm is matched to complete global C scanning imaging. In the ultrasonic C scanning device in the prior art, an obvious efficiency short plate exists in the attitude locking link of the nozzles, specifically, in order to ensure the accuracy of detection signals and imaging quality, two probes must be accurately kept neutral (namely, the coaxiality of the two nozzles), and the distance between the probes needs to be flexibly adjusted according to the thickness of a workpiece. The main current solution is to mount the two nozzles on separate adjusting mechanisms, which are usually only movable in two perpendicular directions. The structure needs to position and fasten the two nozzles respectively, and indirectly locks the relative posture of the two nozzles, so that the operation efficiency is low, and the overall efficiency of the detection operation is restricted. Disclosure of Invention The invention aims to provide an ultrasonic C-scanning device with a U-shaped structure, so as to solve the defects in the prior art. The invention is realized by the following technical scheme: The ultrasonic C scanning device with the U-shaped structure comprises two nozzles which are oppositely arranged, wherein the two nozzles are respectively connected to corresponding mounting seats, and the ultrasonic C scanning device also comprises a U-shaped supporting unit and a locking structure; The U-shaped supporting unit is formed by connecting two hollow rigid supporting arms through flexible connecting pipes, two ends of the U-shaped supporting unit are respectively connected with corresponding mounting seats, and the inside of the U-shaped supporting unit is used as a pipeline channel; the locking structure comprises a ball head assembly, a column head assembly and a locking assembly, wherein the ball head assembly and the column head assembly comprise: One end of the joint arm is provided with a radial lock hole, the other end is provided with an axial lock hole; The lock tongue is arranged in the axial lock hole in a sliding way; The inner stay bar is penetrated in the joint arm, one end of the inner stay bar is propped against the lock tongue, and the other end of the inner stay bar extends into the radial lock hole; The ball head component comprises a ball head component, a connecting head component, a column head component and a locking head component, wherein the ball head component is fixedly connected with one rigid supporting arm, and the other rigid supporting arm is fixedly connected with the other rigid supporting arm; The locking assembly comprises a locking screw rod with threads at two ends and opposite in rotation directions and two locking nuts, and the two locking nuts are respectively arranged in a radial lock hole of one joint arm in a sliding manner and are matched with the locking screw rod; The locking nuts are abutted with the corresponding inner supporting rods through inclined planes, so that when the screw rod is rotated to enable the two locking nuts to move in opposite directions, the two inner supporting rods are driven to push against the lock tongue to fix the connector, and the ball head assembly and the column head assembly are mutually attached and locked. Further, in the ball head assembly, the connector is provided with a spherical connecting part, the lock tongue and the cover body are provided with spherical holes matched with the spherical connecting part, in the column head assembly, the connector is provided with a round connecting part, the lock tongue and the cover body are provided with flat holes matched with the round connecting part, and the axis of the round connecting part is