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CN-224203120-U - Nondestructive testing device for civil engineering

CN224203120UCN 224203120 UCN224203120 UCN 224203120UCN-224203120-U

Abstract

The utility model relates to a nondestructive testing device for civil engineering, and belongs to the technical field of civil engineering. The utility model ensures that the detection mechanism stably moves along the circumferential direction of a pipeline welding seam through the linkage design of the arc guide rails and the annular racks, avoids detection errors caused by unstable distance of the traditional handheld probe, obviously improves detection precision and reliability, adopts a worm turbine driving mechanism, can synchronously adjust the opening and closing of the arc guide rails at two sides through rotating a hand wheel, realizes quick clamping and disassembly, greatly improves detection efficiency, and adopts the spring support design of a plurality of groups of limiting mechanisms, wherein a support block is automatically attached to the outer wall of the pipeline under the action of a spring, ensures that a clamping center line coincides with the center line of the pipeline, avoids detection errors caused by clamping eccentricity, and simultaneously, a limiting nut can flexibly adjust clamping force, thereby being suitable for different pipe diameters.

Inventors

  • YANG YUEXIA
  • YU FUYING
  • YANG LONGFEI
  • ZENG YUHONG
  • XU SHIWEI
  • HE BOWEN
  • Xiao Mingze

Assignees

  • 云南楚天工程检测有限公司

Dates

Publication Date
20260505
Application Date
20250506

Claims (6)

  1. 1. A nondestructive testing device for civil engineering is characterized by comprising a mounting seat (1), a half-hoop (2), an arc-shaped guide rail (3), a detection mechanism (4), an annular rack (5), a limiting mechanism (6) and a driving mechanism (7), wherein the driving mechanism (7) is mounted on the mounting seat (1), the driving mechanism (7) comprises a worm (701), a turbine (702), a hand wheel (703) and a connecting shaft (704), two vertical connecting shafts (704) are mounted on the mounting seat (1), the turbine (702) is arranged on the connecting shaft (704), the worm (401) meshed with the two turbines (402) is mounted on the mounting seat (1) through a bearing, one end of the worm (401) penetrates through the mounting seat (1) and is provided with the hand wheel (403), the end face of the turbine (702) is provided with the openable arc-shaped guide rail (3), the end part of the half-hoop (2) is provided with the annular rack (5), the arc-shaped guide rail (3) is provided with the worm (401) meshed with the annular rack (5), the detection mechanism (4) is uniformly arranged along the semi-circumference (6) of the limiting mechanism (601), and the limiting mechanism (6) is uniformly arranged along the limiting direction (601) The support rod (602), the spring (603), the limit nut (604), the supporting shoe (605), be provided with the spacing section of thick bamboo (601) of external screw thread along radial on half hoop (2), threaded connection has limit nut (604) on spacing section of thick bamboo (601), bracing piece (602) slidable mounting is in spacing section of thick bamboo (601), supporting shoe (605) are installed to its bottom, the top runs through half hoop (2) and is connected with the nut, spring (603) cover is established on bracing piece (602), its bottom supports tightly with supporting shoe (605), the top supports tightly with limit nut (604).
  2. 2. The nondestructive testing device for civil engineering according to claim 1, wherein the testing mechanism (4) comprises a motor (401), a sliding block (402), a gear (403), a connecting rod (404), a testing probe (405) and a limiting screw (406), the motor (401) is slidably mounted on the arc-shaped guide rail (3) through the sliding block (402), the gear (403) meshed with the annular rack (5) is mounted on the output shaft of the motor (401), a fixed cylinder (4021) is arranged on the sliding block (402), the connecting rod (404) is slidably mounted in the fixed cylinder (4021) and locked through the limiting screw (406), and the testing probe (405) opposite to the outer wall of the pipeline is mounted at the bottom end of the connecting rod (404).
  3. 3. The nondestructive testing device for civil engineering according to claim 1 or 2, wherein the bottom surface of the supporting block (605) is provided with an anti-skid rubber pad, and the surface of the anti-skid rubber pad is provided with protruding lines distributed in a staggered manner.
  4. 4. A nondestructive inspection apparatus for civil engineering according to claim 1 or 2, wherein the engagement surface of the worm (701) and the worm wheel (702) is a helical gear structure, and the lead angle of the worm (701) is 5 DEG or less.
  5. 5. A nondestructive testing device for civil engineering according to claim 2, wherein the connecting rod (404) is provided with scale marks for adjusting the contact distance between the detecting probe (405) and the outer wall of the pipeline.
  6. 6. A nondestructive inspection apparatus for civil engineering according to claim 1 or 2, wherein the cross section of the bottom of the slider (402) is of a T-shaped groove structure, and the side wall of the arc-shaped guide rail (3) is provided with a T-shaped protruding block (301) matched with the T-shaped protruding block.

Description

Nondestructive testing device for civil engineering Technical Field The utility model belongs to the technical field of civil engineering, and particularly relates to a nondestructive testing device for civil engineering. Background Pressure pipelines are used as key facilities for industrial production and energy transportation, and the weld quality of the pressure pipelines is directly related to the safety and reliability of the pipelines. Since pressure pipes are often in high temperature, high pressure and corrosive medium environments, weld defects such as cracks, air holes, slag inclusions and the like can cause leakage and even explosion accidents, and therefore nondestructive detection of the weld is particularly important. However, in the traditional detection method, an operator holds a magnetized probe to move along the outer wall of a pipeline, and because the welded part of the pipeline is circular, a worker is difficult to ensure that the magnetized probe always keeps a proper distance from a welding point when scanning, so that detection errors are caused, and when the welding line at the lower part of the pipeline is detected, the operation and observation are inconvenient due to the restriction of position restriction. Disclosure of utility model In order to overcome the problems that in the prior art, an operator holds a magnetized probe to move along the outer wall of a pipeline in a handheld manner, due to the fact that a welding part of the pipeline is circular, a worker is difficult to ensure that a proper distance is kept between the magnetized probe and a welding spot all the time when scanning is performed, detection errors are caused, when detecting a welding line at the lower part of the pipeline, the operation and observation are inconvenient due to the limitation of position constraint, most of existing detection devices are troublesome in operation in the clamping process, the length of each screw rod needs to be adjusted for clamping the outer wall of the pipeline for many times, the center line of a clamping piece is difficult to coincide with the position of the center line of the pipeline, and the detection effect is influenced. The nondestructive testing device for civil engineering mainly comprises a mounting seat, a half hoop, an arc-shaped guide rail, a detection mechanism, an annular rack, a limiting mechanism and a driving mechanism, wherein the driving mechanism is mounted on the mounting seat and comprises a worm, a turbine, a hand wheel and a connecting shaft, two vertical connecting shafts are mounted on the mounting seat, the turbine is arranged on the connecting shaft, the worm meshed with the two turbines is mounted on the mounting seat through a bearing, one end of the worm penetrates through the mounting seat and is provided with the hand wheel, the arc-shaped guide rail capable of opening and closing is mounted on the end face of the turbine, a half hoop is mounted on the arc-shaped guide rail, the end part of the half hoop is provided with the annular rack, the detection mechanism linked with the annular rack is mounted on the arc-shaped guide rail, a plurality of groups of limiting mechanisms are uniformly arranged on the half hoop along the circumferential direction, each limiting mechanism comprises a limiting cylinder, a supporting rod, a spring, a limiting nut and a supporting block, the limiting cylinder is radially provided with external threads, the limiting nut is connected to the limiting cylinder through threads, the supporting rod is slidably mounted in the limiting cylinder, the supporting rod, the supporting block is mounted at the bottom end of the supporting rod, the supporting block penetrates through the half hoop and is tightly abutted against the supporting nut, and is tightly abutted against the supporting nut. The detection mechanism comprises a motor, a sliding block, a gear, a connecting rod, a detection probe and a limit screw, wherein the motor is slidably arranged on an arc-shaped guide rail through the sliding block, the gear meshed with the annular rack is arranged on an output shaft of the motor, a fixed cylinder is arranged on the sliding block, the connecting rod is slidably arranged in the fixed cylinder and locked through the limit screw, and the bottom end of the connecting rod is provided with the detection probe which is opposite to the outer wall of the pipeline. The bottom surface of the supporting block is provided with an anti-skid rubber pad, and the surface of the anti-skid rubber pad is provided with protruding lines which are distributed in a staggered way. The meshing surface of the worm and the turbine is of a helical gear structure, and the spiral angle of the worm is less than or equal to 5 degrees. The connecting rod on be equipped with the scale mark that is used for adjusting the contact distance of test probe and pipeline outer wall. The cross section of the bottom of the sliding block is of a T-shaped g