CN-224229550-U - Pipeline weld joint flaw detection robot suitable for different pipe diameters

CN224229550UCN 224229550 UCN224229550 UCN 224229550UCN-224229550-U

Abstract

The utility model discloses a pipeline weld joint flaw detection robot suitable for different pipe diameters, which comprises a detection mechanism and two support frames which are arranged at intervals, wherein two groups of wheel frames with adjustable intervals are connected between the two support frames through a first adjusting mechanism, two support frames with adjustable assembly angles are assembled at the bottoms of the wheel frames through a second adjusting mechanism, a moving mechanism is assembled on the support frames, the detection mechanism is positioned at a position between the two groups of wheel frames and is assembled on the two support frames, and the moving mechanism comprises a magnetic attraction wheel which is rotatably assembled on a support rod and a third motor which is assembled on the support rod and is used for driving the magnetic attraction wheel to rotate. The two adjusting mechanisms are arranged to adjust the distance between the two groups of moving mechanisms respectively, and the arrangement angle of each group of moving mechanisms is adjusted, so that the travelling surface of the magnetic attraction wheel is always in contact with the pipe wall on pipes with different pipe diameters, and further the detecting mechanism can detect the pipeline welding seams with different pipe diameters in an axial direction and a radial direction.

Inventors

YAN SHUANGSHENG
LI YUNTAO
LIU TAILI
HOU BING
WANG JINCHAO
TIAN WEIQIAN
WAN BENLI
GAO HAITAO
NONG ZHENYU

Assignees

中国特种设备检测研究院

Dates

Publication Date: 20260512
Application Date: 20250609

Claims (7)

1. The utility model provides a pipeline weld seam inspection detection robot suitable for different pipe diameters, includes detection mechanism (1), its characterized in that still includes two support frames (2) of interval arrangement, two be connected with two sets of interval adjustable wheel carrier (4) between support frame (2) through first adjustment mechanism, the bottom of wheel carrier (4) is equipped with two assembly angle adjustable bracing pieces (6) through second adjustment mechanism all, be equipped with moving mechanism (7) on bracing piece (6); The detection mechanism (1) is arranged at a position between the two groups of wheel frames (4) and is assembled on the two supporting frames (2), and the moving mechanism (7) comprises a magnetic attraction wheel (71) rotatably assembled on the supporting rod (6) and a third motor (72) assembled on the supporting rod (6) and used for driving the magnetic attraction wheel (71) to rotate.
2. The robot for detecting the weld joint of the pipeline, which is applicable to different pipe diameters, according to claim 1, characterized in that the first adjusting mechanism comprises adjusting grooves (31) respectively formed on the adjacent surfaces of the two supporting frames (2), and adjusting blocks (32) arranged at two ends of the wheel frame (4), the two adjusting blocks (32) are respectively inserted into the two adjusting grooves (31) one by one and can slide along the length direction of the adjusting grooves (31), the two adjusting blocks (32) in one adjusting groove (31) are connected through screw rods (33) which are connected in a screwed mode, the screw rods (33) are opposite in screw tooth directions of threads corresponding to the positions of the two adjusting blocks (32), the screw rods (33) are connected with the adjusting grooves (31) through first bearings, one ends of the screw rods extend out of the adjusting grooves (31) and are connected with first motors (34) through splines, the first motors (34) are fixed on the supporting frames (2) provided with the screw rods (33), and the screw rods (33) are formed through screw rods (33) in a hole.
3. The pipeline weld joint flaw detection robot suitable for different pipe diameters according to claim 1, wherein the second adjusting mechanism comprises a mounting groove (51) formed in the bottom of the wheel frame (4), a worm (52) is assembled in the mounting groove (51) through a second bearing, a driven gear (53) is sleeved in the middle of the worm (52), spiral teeth are arranged at positions close to two ends of the worm, the directions of the spiral teeth of the two spiral teeth are opposite, a transmission rod (54) is fixed on the support rod (6), the transmission rod (54) is assembled in the mounting groove (51) through a third bearing, a worm wheel (55) meshed with the spiral teeth is arranged on the transmission rod (54), a second motor (56) is arranged at the top of the wheel frame (4), a driving gear (57) meshed with the driven gear (53) is fixed on a power output shaft of the second motor (56), and a hole for allowing the power output shaft to pass through is formed in the wheel frame (4).
4. A pipeline weld inspection robot suitable for different pipe diameters according to any one of claims 1-3, characterized in that the inspection mechanism (1) comprises a central support (11) fixed on two support frames (2) at the same time, a longitudinal support (12) is arranged on the central support (11), a probe mounting frame (13) is arranged on the longitudinal support (12) through a third adjusting mechanism, and an inspection probe (14) is arranged on the probe mounting frame (13).
5. The robot for detecting the flaw detection of the pipeline weld joints applicable to different pipe diameters according to claim 4, wherein a plurality of probe mounting holes and locking holes which are communicated with the probe mounting holes one by one are formed in the probe mounting frame (13), the flaw detection probe (14) is arranged in the probe mounting holes in an insertable mode, and a locking knob (15) which abuts against the flaw detection probe (14) is connected in the locking holes in an internal mode.
6. The robot for detecting the weld joints of the pipelines applicable to different pipe diameters according to claim 5, wherein the third adjusting mechanism comprises a sliding groove (81) formed in the longitudinal support (12), a sliding block arranged on the probe mounting frame (13) and an electric push rod (82) arranged in the sliding block, and the sliding block is detachably inserted into the sliding groove (81) and connected with the telescopic end of the electric push rod (82).
7. The pipeline weld inspection robot suitable for different pipe diameters according to any one of claims 5-6, wherein a visual probe (9) is further arranged on the wheel frame (4).

Description

Pipeline weld joint flaw detection robot suitable for different pipe diameters Technical Field The utility model relates to the technical field of pipeline weld joint flaw detection, in particular to a pipeline weld joint flaw detection robot applicable to different pipe diameters. Background The pipeline welding seam is mostly an annular welding seam or a strip welding seam, and the pipelines connected at two ends are connected into a whole through welding so as to continuously prolong the pipeline. In addition to the requirements of welding technology and welding process, welding quality detection is also an important part of quality management of welded structures, and safe and reliable operation of welded products is ensured by detecting welding quality. The welding quality detection modes which are common at present comprise ultrasonic detection, magnetic particle inspection and the like. In the prior art, the patent of the utility model with the authority of the publication number CN220894176U discloses a pipeline welding quality detection robot based on X rays, which comprises an arc-shaped rail frame, a movable frame, a flaw detector main body and a bottom plate, wherein the movable frame is slidably arranged on the arc-shaped rail frame, the bottom plate is fixed at the bottom end of the arc-shaped rail frame, the bottom surface of the bottom plate is provided with universal wheels, the robot further comprises a threaded column, a positive hexagonal nut, an electric push rod and a stable push plate, a fixed disc is fixed on the flaw detector main body, the threaded columns are fixed on the top surface and the bottom surface of the movable frame and penetrate through the fixed disc, the flaw detector main body can be arranged at the top end or the bottom end of the movable frame according to requirements, so that welding seam detection is conveniently carried out from the inner side or the outer side of a pipeline, the detection accuracy is greatly improved, the quality of the welding seam of the pipeline is facilitated to be fully closed, and the electric push rod is controlled to be abutted against the outer wall or the inner wall of the pipeline, and the stability of the detection robot is further improved. However, the technical scheme cannot carry out transverse and annular continuous detection along the path of the welding seam, meanwhile cannot be suitable for pipeline detection of different pipe diameters, has limited detection range, reduces detection efficiency, and therefore, the crawling robot suitable for pipeline welding seam flaw detection of different pipe diameters is provided. Disclosure of utility model The utility model provides a pipeline weld joint flaw detection robot applicable to different pipe diameters. In order to achieve the above purpose, the utility model adopts the following technical scheme: The pipeline weld joint flaw detection robot suitable for the different pipe diameters comprises a detection mechanism, and further comprises two supporting frames which are arranged at intervals, wherein two groups of wheel frames with adjustable intervals are connected between the two supporting frames through a first adjusting mechanism, two supporting rods with adjustable assembly angles are arranged at the bottoms of the wheel frames through a second adjusting mechanism, a moving mechanism is arranged on each supporting rod, the detection mechanism is located at a position between the two groups of wheel frames and is arranged on the two supporting frames, each moving mechanism comprises a magnetic attraction wheel which is rotatably arranged on each supporting rod, and a third motor which is arranged on each supporting rod and is used for driving the corresponding magnetic attraction wheel to rotate. When the pipeline axial detection is required, the arrangement angle of the moving mechanism can be changed by adjusting the assembly angles of the two support rods, so that the advancing surface of the magnetic attraction wheel can be adapted to be always in contact with the pipeline wall of the pipeline, and further the detection mechanism can carry out radial and axial flaw detection on pipeline welds of different pipe diameters. Preferably, the first adjusting mechanism comprises adjusting grooves formed in adjacent surfaces of the two supporting frames respectively, and adjusting blocks arranged at two ends of the wheel frames, wherein the two adjusting blocks are respectively inserted into the two adjusting grooves one by one and can slide along the length direction of the adjusting grooves, the two adjusting blocks in one adjusting groove are connected through screw rods connected in a screwed mode, the screw rods correspond to screw threads of the two adjusting block parts, the screw rods are connected with the adjusting grooves through first bearings, one ends of the screw rods extend out of the adjusting grooves and are connected with first motors through splines, the