CN113833613A

CN113833613A - Tower section of thick bamboo welding seam equipment of detecting a flaw

Info

Publication number: CN113833613A
Application number: CN202111072719.2A
Authority: CN
Inventors: 张后禅; 郑睿; 王艳冬
Original assignee: Shanghai Electric Research Concrete Mulei Construction Technology Co ltd
Current assignee: Shanghai Electric Research Concrete Mulei Construction Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2021-12-24

Abstract

The invention discloses tower drum welding seam flaw detection equipment which comprises a base, wherein a lifting rod is fixedly arranged at the central position of the upper surface of the base, a lifting assembly is movably arranged on the lifting rod, a scanning motor is arranged in the lifting assembly, an output shaft is connected to the output shaft of the scanning motor in a transmission manner, a telescopic mechanism used for adjusting the length of a scanning path is detachably arranged at one end, away from the lifting assembly, of the output shaft, and flaw detectors can be detachably arranged at two ends of the telescopic assembly. The invention adopts a mode of combining lifting adjustment and contraction adjustment, realizes the height adjustment and the extension length adjustment of the telescopic threaded rod, can be adjusted according to the size of the welding line of the tower, meets the requirement of flaw detection on the welding lines of the towers with different inner diameters, not only reduces the difficulty of flaw detection of the welding line of the tower, but also improves the efficiency of flaw detection of the tower, and has the characteristics of simple structure and convenient operation.

Description

Tower section of thick bamboo welding seam equipment of detecting a flaw

Technical Field

The invention relates to the field of flaw detection equipment, in particular to tower drum weld joint flaw detection equipment.

Background

The wind power tower barrel is a tower pole of wind power generation, and mainly plays a supporting role in a wind generating set and absorbs the vibration of the set. The production process flow of the wind power tower is generally as follows: blanking by a numerical control cutting machine, beveling a thick plate, performing spot welding and positioning after the plate is rolled and formed by a plate rolling machine, welding an inner longitudinal seam and an outer longitudinal seam after confirmation, performing secondary rounding if a problem exists after roundness inspection, performing group spot welding on a roller frame by adopting a hydraulic group after welding a single-section barrel, welding an inner circular seam and an outer circular seam, performing tolerance inspection such as straightness and the like, performing nondestructive flaw detection and flatness inspection of a welding seam after welding a flange, performing sand blasting and paint spraying treatment, and after internal part installation and finished product inspection, transporting to an installation site.

At present, the manual flaw detection is often adopted after the welding of the welding seam of the wind power tower drum, so that the efficiency is not high, the time and the labor are wasted, and certain defects exist.

Disclosure of Invention

The invention aims to provide a tower drum weld joint flaw detection device, which is used for comprehensively detecting weld joints of wind power towers with different inner diameters and improving the flaw detection efficiency of the weld joints of the wind power towers.

In order to solve the technical problem, the invention provides a tower drum welding seam flaw detection device which comprises a base, wherein a lifting rod is fixedly installed at the central position of the upper surface of the base, a lifting assembly is movably installed on the lifting rod, a scanning motor is installed in the lifting assembly, an output shaft of the scanning motor is in transmission connection with an output shaft, a telescopic mechanism used for adjusting the length of a scanning path is detachably installed at one end, away from the lifting assembly, of the output shaft, and flaw detectors can be detachably installed at two ends of the telescopic assembly.

Furthermore, the lifting component comprises a mounting seat which is slidably mounted on the lifting rod, the scanning motor is internally mounted in the mounting seat, a driving lead screw is mounted on the mounting seat in a threaded manner, the bottom end of the driving lead screw is connected with a lifting motor through a worm and gear assembly in a transmission manner, and the lifting motor is fixedly mounted on the base.

Further, the worm gear subassembly is including fixed setting up transmission case on the base, movable mounting has drive worm and the transmission worm wheel that the meshing is connected in the transmission case, the drive worm with the elevator motor transmission is connected, the transmission worm wheel with drive lead screw fixed connection.

Furthermore, the scanning motor and the lifting motor both adopt stepping motors.

Further, telescopic machanism is including demountable installation in the epaxial installation cover of output, the installation is sheathe in and is rotated the installation and is had the storage cylinder, storage cylinder inner wall both ends are provided with and revolve to opposite connecting thread, threaded installation has two flexible threaded rods on the connecting thread, just appearance demountable installation of detecting a flaw is in on the flexible threaded rod, flexible threaded rod with be provided with between the output shaft and be used for the location flexible threaded rod linear motion's spacing subassembly.

Furthermore, spacing subassembly includes through spacing fixed mounting in the epaxial locating frame of output, just flexible threaded rod slides and sets up inside the locating frame, the vertical locating pin that is provided with on the locating frame inner wall, just be provided with on the flexible threaded rod with locating pin assorted location movable slot.

Furthermore, a loading sleeve is arranged on the side face of the installation sleeve, the loading sleeve is sleeved on the output shaft, a locking hole penetrates through the loading sleeve and the output shaft, and a limiting pin is detachably arranged in the locking hole.

Further, install the universal wheel on the base bottom surface, base edge carries out the chamfer and handles.

Furthermore, a clamping bolt is arranged on the positioning frame, and a conical clamping block matched with the positioning movable groove is arranged at the bottom end of the clamping bolt.

Compared with the prior art, the invention at least has the following beneficial effects:

the invention adopts a mode of combining lifting adjustment and contraction adjustment, realizes the height adjustment and the extension length adjustment of the telescopic threaded rod, can be adjusted according to the size of the welding line of the tower, meets the requirement of flaw detection on the welding lines of the towers with different inner diameters, not only reduces the difficulty of flaw detection of the welding line of the tower, but also improves the efficiency of flaw detection of the tower, and has the characteristics of simple structure and convenient operation.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a tower weld inspection apparatus according to the present invention;

FIG. 2 is a schematic structural diagram of a worm gear assembly of the tower weld inspection apparatus of the present invention;

FIG. 3 is a schematic structural view of a storage barrel of the tower welding seam flaw detection equipment of the present invention;

FIG. 4 is a schematic view of a clamping bolt structure of the tower weld inspection equipment of the present invention.

Detailed Description

While the tower weld inspection apparatus of the present invention will be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the present invention are shown, it is to be understood that those skilled in the art may modify the invention described herein while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1 to 4, an embodiment of the invention provides a tower drum weld seam flaw detection device, which includes a base 1, wherein a lifting rod 2 is fixedly installed at a central position of an upper surface of the base 1, a lifting assembly 3 is movably installed on the lifting rod 2, a scanning motor 4 is installed in the lifting assembly 3, an output shaft 5 is connected to an output shaft of the scanning motor 4 in a transmission manner, a telescopic mechanism 6 for adjusting the length of a scanning path is detachably installed at one end of the output shaft 5, which is far away from the lifting assembly 3, and flaw detectors 7 are detachably installed at two ends of the telescopic assembly 6.

Lifting unit 3 includes slidable mounting and is in mount pad 8 on the lifter 2, just scanning motor 4 is built-in to be installed in mount pad 8, drive lead screw 9 is installed to the screw thread on the mount pad 8, just 9 bottoms of drive lead screw are connected with elevator motor 10 through worm gear subassembly transmission, just elevator motor 10 fixed mounting be in on the base 1. In this embodiment, under the drive of the lifting motor 10, the driving screw 9 rotates, the mounting base 8 in threaded connection with the driving screw 9 cannot rotate along with the driving screw 9 due to the limiting effect of the lifting rod 2, the mounting base 8 can only move up and down along the length direction of the lifting rod 2, the ascending or descending of the mounting base 8 is controlled by the rotation direction of the lifting motor 10, when the mounting base 8 ascends to a preset position, the lifting motor 10 stops working, at this time, due to the self-locking effect of the worm and gear assembly, the mounting base 8 is stably kept at the current position, and at this time, the flaw detection of the welding seam of the tower can be performed.

The worm gear assembly is in including fixed setting transmission case 11 on the base 1, movable mounting has drive worm 12 and transmission worm wheel 13 that the meshing is connected in the transmission case 11, drive worm 12 with elevator motor 10 transmission is connected, transmission worm wheel 13 with drive lead screw 9 fixed connection. In this embodiment, in the worm gear assembly, a unidirectional self-locking is generated between the driving worm 12 and the transmission worm wheel 13, that is, the driving worm 12 can drive the transmission worm wheel 13 to move, and the transmission worm wheel 13 cannot drive the driving worm 12 to rotate, and the mounting base 8 is locked after reaching a predetermined position, so that the mounting base 8 is stably kept at the current position, and the welding seam of the tower can be stably measured.

The scanning motor 4 and the lifting motor 10 both adopt stepping motors. In this embodiment, the stepping motor is a motor that converts an electric pulse signal into a corresponding angular displacement or linear displacement. The rotor rotates an angle or one step before inputting a pulse signal, the output angular displacement or linear displacement is proportional to the input pulse number, and the rotating speed is proportional to the pulse frequency. After the stepping motor is adopted, the height of the mounting base 8 can be accurately adjusted, the rotating angle of the flaw detector 7 is accurately controlled, and then the welding seam of the tower can be accurately detected.

Telescopic machanism 6 is including demountable installation at installation cover 14 on output shaft 5, it has storage cylinder 15 to rotate on the

installation cover

14, 15 inner walls both ends of storage cylinder are provided with and revolve to opposite connecting thread 16, two flexible threaded rod 17 are installed to the last screw thread of connecting thread 16, just 7 demountable installation of flaw detector is in on the flexible threaded rod 17, flexible threaded rod 17 with be provided with between the output shaft 5 and be used for fixing a position flexible threaded rod 17 linear motion's spacing subassembly. In this embodiment, the storage barrel 15 is rotated, the telescopic threaded rod 17 cannot rotate together with the storage barrel 15 due to the fact that the telescopic threaded rod 17 is limited by the limiting assembly, the telescopic threaded rod 17 can only move along the length direction of the telescopic threaded rod, the connecting threads 16 on the inner wall of the storage barrel 15 are opposite in rotating direction, in the rotating process of the storage barrel 15, the two telescopic threaded rods 17 can contract or extend in the same direction, and comprehensive flaw detection on a welding seam of a tower barrel is facilitated.

The limiting assembly comprises a positioning frame 19 fixedly mounted on the output shaft 5 through a limiting frame 18, the telescopic threaded rod 17 is slidably arranged inside the positioning frame 19, a positioning pin 20 is vertically arranged on the inner wall of the positioning frame 19, and a positioning movable groove 21 matched with the positioning pin 20 is formed in the telescopic threaded rod 17. In this embodiment, because locating pin 20 is to the limiting displacement of flexible threaded rod 17 for flexible threaded rod 17 removes along its length direction, thereby realizes the regulation of 7 rotation diameters of flaw detector, and then can detect the detection of detecting a flaw to the tower section of thick bamboo welding seam of equidimension internal diameter not.

The side surface of the mounting sleeve 14 is provided with a loading sleeve 22, the loading sleeve 22 is sleeved on the output shaft 5, a locking hole 23 penetrates through the loading sleeve 22 and the output shaft 5, and a limiting pin 24 is detachably arranged in the locking hole 23. In this embodiment, after the loading sleeve 22 is sleeved on the installation output shaft 5, the locking hole 23 on the loading sleeve 22 and the output shaft 5 is aligned, and the limit pin 24 is inserted to complete the installation of the telescopic mechanism 6, so that the telescopic mechanism 6 is convenient to detach and is convenient to store.

Install universal wheel 25 on the base 1 bottom surface, base 1 edge carries out the chamfer and handles. In this embodiment, the setting of universal wheel 25 conveniently removes the inspection equipment, forms smooth plane after base 1 edge carries out the chamfer and handles simultaneously, has avoided base 1 edge sharp-pointed part to cause the injury to operating personnel.

The positioning frame 19 is provided with a clamping bolt 26, and the bottom end of the clamping bolt 26 is provided with a conical clamping block 27 matched with the positioning movable groove 21. In this embodiment, after the position of the telescopic threaded rod 17 is adjusted, the position of the telescopic threaded rod 17 can be limited by screwing the clamping bolt 26, so that the smooth operation of the flaw detection work of the tower welding seam is ensured.

While the preferred embodiments of the tower seam testing apparatus are illustrated below for clarity of description of the present invention, it should be understood that the present invention is not limited to the following embodiments, and other modifications made by conventional means of ordinary skill in the art are within the scope of the present invention.

The embodiment of the invention provides a using method of tower drum weld joint flaw detection equipment, which comprises the following steps: firstly, moving the flaw detection equipment to the position of a tower drum welding seam, determining the telescopic length of a telescopic threaded rod 17 according to the size of the tower drum welding seam, then opening a lifting motor 10, driving the mounting seat 8 to move up and down under the driving of the lifting motor 10, closing the lifting motor 10 when the central axis of an output shaft 5 is positioned at the central position of the tower drum welding seam, keeping the mounting seat 8 stably at the current position under the self-locking action of a worm and gear assembly, finally rotating a containing cylinder 15, enabling the telescopic threaded rod 17 to rotate along the length direction of the containing cylinder 15 because the telescopic threaded rod 17 is limited by a limiting assembly, enabling the telescopic threaded rod 17 to move along the length direction of the connecting threaded rod 16 on the inner wall of the containing cylinder 15 due to opposite rotation directions, enabling the two telescopic threaded rods 17 to contract or extend in the same direction in the rotating process of the containing cylinder 15, and enabling the flaw detection diameter of the flaw detector 7 to be matched with the tower drum welding seam, the rotation of the storage barrel 15 is stopped and the jam bolt 26 is screwed, and at this time, the overall adjustment of the flaw detection apparatus is completed. When the flaw detection of the tower drum welding seam is required, the flaw detector 7 is moved to the tower drum welding seam, the scanning motor 4 is started, and circumferential scanning flaw detection can be carried out on the tower drum welding seam through the flaw detector 7.

In conclusion, the height adjustment and the extension length adjustment of the telescopic threaded rod are realized by adopting a mode of combining lifting adjustment and contraction adjustment, the adjustment can be carried out according to the size of the welding line of the tower, the flaw detection of the welding lines of the towers with different inner diameters is met, the difficulty of the flaw detection of the welding line of the tower is reduced, the flaw detection efficiency of the tower is improved, and the telescopic threaded rod has the characteristics of simple structure and convenience in operation.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a tower section of thick bamboo welding seam equipment of detecting a flaw, its characterized in that, includes the base, base upper surface central point department of putting fixed mounting has the lifter, movable mounting has a lifting unit on the lifter, lifting unit embeds installs scanning motor, the transmission connection has the output shaft on the scanning motor output shaft, the output shaft is kept away from lifting unit one end demountable installation has the telescopic machanism who is used for adjusting scanning path length, the equal demountable installation in telescopic machanism both ends has the appearance of detecting a flaw.

2. The tower weld inspection apparatus of claim 1, wherein the lifting assembly includes a mounting base slidably mounted on the lifting rod, the scanning motor is mounted in the mounting base, a driving screw is threadedly mounted on the mounting base, a lifting motor is connected to a bottom end of the driving screw through a worm and gear assembly, and the lifting motor is fixedly mounted on the base.

3. The tower weld seam flaw detection apparatus of claim 2, wherein the worm gear assembly includes a transmission case fixedly disposed on the base, a driving worm and a transmission worm wheel are movably mounted in the transmission case, the driving worm is in transmission connection with the lifting motor, and the transmission worm wheel is fixedly connected with the driving screw rod.

4. The tower weld inspection apparatus of claim 1, wherein the scanning motor and the lift motor are stepper motors.

5. The tower welding seam flaw detection device of claim 1, wherein the telescopic mechanism comprises a mounting sleeve detachably mounted on the output shaft, a receiving cylinder is rotatably mounted on the mounting sleeve, connecting threads with opposite rotation directions are arranged at two ends of the inner wall of the receiving cylinder, two telescopic threaded rods are threadedly mounted on the connecting threads, the flaw detector is detachably mounted on the telescopic threaded rods, and a limiting assembly for positioning linear motion of the telescopic threaded rods is arranged between the telescopic threaded rods and the output shaft.

6. The tower welding seam flaw detection device of claim 5, wherein the limiting component comprises a positioning frame fixedly mounted on the output shaft through a limiting frame, the telescopic threaded rod is slidably disposed inside the positioning frame, a positioning pin is vertically disposed on an inner wall of the positioning frame, and a positioning movable groove matched with the positioning pin is disposed on the telescopic threaded rod.

7. The tower weld seam flaw detection apparatus of claim 5, wherein a loading sleeve is disposed on a side surface of the mounting sleeve, the loading sleeve is sleeved on the output shaft, a locking hole is formed through the loading sleeve and the output shaft, and a limiting pin is detachably disposed in the locking hole.

8. The tower weld inspection apparatus of claim 1, wherein universal wheels are mounted on a bottom surface of the base, and edges of the base are chamfered.

9. The tower weld seam flaw detection apparatus of claim 6, wherein the positioning frame is provided with a clamping bolt, and a tapered clamping block matched with the movable positioning slot is arranged at the bottom end of the clamping bolt.