CN107020755B

CN107020755B - Inspection mechanism for welding port of composite pipe

Info

Publication number: CN107020755B
Application number: CN201710306249.9A
Authority: CN
Inventors: 黄启航
Original assignee: Shenzhen Yuanhang Co ltd
Current assignee: Shenzhen Yuanhang Co ltd
Priority date: 2017-05-03
Filing date: 2017-05-03
Publication date: 2020-05-22
Anticipated expiration: 2037-05-03
Also published as: CN107020755A

Abstract

The invention relates to the field of welding, in particular to a composite material pipe welding port inspection mechanism which comprises a guide structure, a support rod, an annular guide rail and a flaw detection device, wherein the guide structure is arranged on the working table of a welding device; the utility model discloses a pipe welding port, including bracing piece, guide structure, bracing piece first end, bracing piece second end installation ring rail, this ring rail can open and encircle at the pipe welding port, the device of detecting a flaw can move along ring rail inner annular surface, and the face of detecting a flaw of the device of detecting a flaw towards the pipe welding port. The guide structure can enable the flaw detection device to slide on the guide structure and rotate relative to the guide structure, so that the flaw detection device can move to a pipe welding interface. Wherein the flaw detection device can be rotatably moved to surround the pipe welding interface or moved away, the operation can be convenient, and the flaw detection device, the pipe welding device and the pipe end planing tool are combined, so that the device can be easily integrated on the composite material pipe welding equipment.

Description

Inspection mechanism for welding port of composite pipe

Technical Field

The invention relates to the field of welding, in particular to a flaw detection device for welded material pipes.

Background

The welding of the PE pipe mainly comprises the following steps: the roundness of the pipe for welding the pipe fitting is higher than a standard value, and 10-20mm of cutting allowance is reserved during blanking. When the pipe joint is used for pipeline connection, two pipes to be welded are placed on a flat ground to clamp the pipes, a basic clamp is replaced according to the welded pipes, a proper slip is selected, and the welded pipe sections need to be clamped before cutting. Cutting: and impurities and an oxide layer on the end surfaces of the welded pipe sections are cut, so that the two joint end surfaces are smooth and clean. Centering: the smaller the misalignment between the two pairs of welded pipe sections, the better, if the misalignment is large, stress concentration will result, and the misalignment should not exceed 10% of the wall thickness. Heating: enough melt is ensured for the molecules to diffuse into each other during melt butt joint. Switching: the time from the end of heating to the beginning of fusion butt joint is a switching period, and in order to ensure the quality of fusion butt joint, the shorter the switching period, the better. Fusion butt joint: is the key of welding, and the fusion butt joint process should be carried out under the fusion pressure all the time. And (3) cooling: due to the poor thermal conductivity of plastic materials, the cooling rate is correspondingly slow. The contraction of the weld material and the formation of the structure are carried out at a slow speed for a long time. Therefore, the cooling of the weld must be carried out under a certain pressure.

In the prior art, quality detection of welded end faces of material pipes is always an important subject, and no device which can be designed for a device for welding the material pipes in multiple angles and can be used for timely inspection and flaw detection exists at present.

Disclosure of Invention

In order to solve the above problems, the present invention provides a composite material pipe welding port inspection mechanism, which can inspect the quality of welding of the pipe end in accordance with the material pipe in time.

In order to achieve the purpose, the invention adopts the technical scheme that:

a composite material pipe welding port inspection mechanism comprises a guide structure, a support rod, an annular guide rail and a flaw detection device, wherein the guide structure is arranged on a working table of a welding device; the utility model discloses a pipe welding port, including bracing piece, guide structure, bracing piece first end, bracing piece second end installation ring rail, this ring rail can open and encircle at the pipe welding port, the device of detecting a flaw can move along ring rail inner annular surface, and the face of detecting a flaw of the device of detecting a flaw towards the pipe welding port.

Preferably, the guide structure is a guide pillar with a circular cross section.

Preferably, the first end of the support rod is of an annular structure, and the first end of the support rod is sleeved on the outer annular surface of the guide pillar.

Preferably, the support rods include a first support rod, a second support rod and a third support rod, wherein a first end of the first support rod is connected to the guide structure, a second end of the first support rod is connected to a first end of the second support rod, a second end of the second support rod is connected to a first end of the third support rod, a second end of the third support rod is provided with an annular guide rail, the first support rod, the second support rod and the third support rod extend in the same plane, and the first support rod, the second support rod and the third support rod are combined to form a folded shape.

Preferably, one end of the annular guide rail is hinged with the support rod.

Preferably, the annular guide rail comprises a first half-ring structure and a second half-ring structure, wherein a first end of the first half-ring structure and a first end of the second half-ring structure are both hinged to the support rod, and a second end of the first half-ring structure and a second end of the second half-ring structure are movable and closed, so that the first half-ring structure and the second half-ring structure form an annular shape.

Preferably, the side of the annular guide rail is provided with a slide way, a part of the flaw detection device is embedded in the slide way, and the flaw detection device can slide along the slide way.

Preferably, the side surfaces of the first semi-ring structure and the second semi-ring structure are provided with slideways, and one flaw detection device is respectively arranged in the slideways of the first semi-ring structure and the second semi-ring structure.

Preferably, the slideway of the first semi-ring structure and the slideway of the second semi-ring structure are respectively positioned on two sides of the annular guide rail.

The beneficial effects of the invention are as follows:

this device passes through guide structure, can make the device of detecting a flaw slide and relative guide structure rotates on to guide structure for the device of detecting a flaw can move to pipe welding kneck, or move away from pipe welding kneck. Wherein the flaw detection device can be rotatably moved to surround the pipe welding interface or moved away, the operation can be convenient, and the flaw detection device, the pipe welding device and the pipe end planing tool are combined, so that the device can be easily integrated on the composite material pipe welding equipment.

Drawings

FIG. 1 is a schematic view of the overall structure of a tube angle positioning mechanism of a composite tube welding port inspection mechanism according to the present invention.

Fig. 2 is a schematic view of the composite pipe welding port inspection mechanism after the hoop assembly rotates.

Fig. 3 is a schematic top view of the hoop assembly of the inspection mechanism for welding ports of composite pipes according to the present invention after rotation.

FIG. 4 is a schematic view of a bottom view of a tube angle positioning mechanism of a composite tube welding port inspection mechanism according to the present invention.

FIG. 5 is a schematic side view of a hoop assembly of the inspection mechanism for a welding port of a composite pipe according to the present invention.

Fig. 6 is a diagram of a partial method a in fig. 1.

Fig. 7 is a partially enlarged view of portion B of fig. 4.

Fig. 8 is a schematic view of the overall structure of the inspection mechanism for the welding port of the composite material pipe according to the present invention.

Fig. 9 is an overall structural diagram of another perspective view of the inspection mechanism for the welding port of the composite pipe according to the present invention.

Fig. 10 is a partially enlarged view of portion C of fig. 8.

The reference numerals include:

10-tube angle positioning mechanism 20-welding mechanism 21-welding pad support

22-pad body 23-pad handle 24-handle connector

25-guide post 26-planing tool support 27-planing tool disk

28-Transmission Structure 2801-Power connection hole 29-planer handle

2901-safety bolt 30-control box 40-safety post

50-checking mechanism 51-embracing column 52-first supporting rod

53-second support bar 54-third support bar 55-first semi-ring structure

56-slideway 57-flaw detection device 58-second half-ring structure

100-bottom plate 210-power device 220-connecting block

230-first slide rail set 240-first slider set 310-hand wheel

320-screw rod seat 330-screw rod 340-locking handle

350-second slide rail set 360-second slide block set 410-mounting plate

420-rotating plate 430-hoop component 431-lower hoop

432-upper hoop 433-hinge 434-gasket

435-positioning handle 440-angle adjusting device 441-angle adjusting handle

442-Angle pointer 443-Angle Scale 500-distance marker

510-distance marking pointer 520-length scale

Detailed Description

The present invention is described in detail below with reference to the attached drawings.

The embodiment provides a composite material pipe welding port inspection mechanism, which comprises a guide structure, a support rod, an annular guide rail and a flaw detection device 57, wherein the guide structure is arranged on the working table of a welding device, and extends and spans the welding position of the welding device; the first end of bracing piece is connected and can follows the extending direction translation of guide structure with guide structure, and bracing piece second end installation ring rail, this ring rail can open and encircle at the pipe welding port, and flaw detection device 57 can move along ring rail inner annular surface, and flaw detection device 57's the face of detecting a flaw towards the pipe welding port. In this embodiment, the first end of the support rod is a cylindrical body 51.

As shown in fig. 8, the tube angle positioning mechanism 10, the welding mechanism 20, the control box 30, and the like, the inspection mechanism 50 in the present apparatus is installed at a position matching the tube angle positioning mechanism 10 and the welding mechanism 20, so that the inspection mechanism 50 can be integrated with the tube angle positioning mechanism 10 and the welding mechanism 20.

As shown in fig. 10, the flaw detection device 57 of the present embodiment is connected to the guide structure via a support rod, so that the flaw detection device 57 can slide on the guide structure and rotate relative to the guide structure, so that the flaw detection device 57 can be moved to or from the pipe welding interface. Wherein the inspection unit 57 is rotatably movable to and from surrounding the pipe welding interface to facilitate handling and coupling of the inspection unit 57 with the pipe welding unit and the pipe end planer. Wherein the ring rail may surround the pipe weld interface so that the flaw detection device 57 may detect the quality and internal condition of the pipe weld interface. The inspection mechanism 50 is easily removed or moved into position so that the present apparatus is easily integrated into composite pipe welding equipment.

Specifically, the guide structure is a guide pillar with a circular cross section. The first end of the supporting rod is of an annular structure, and the first end of the supporting rod is sleeved on the outer annular surface of the guide pillar. The principle of operation of the welding mechanism 20 is described in detail below.

In this embodiment, the support rods include a first support rod 52, a second support rod 53 and a third support rod 54, wherein a first end of the first support rod 52 is connected to the guide structure, a second end of the first support rod 52 is connected to a first end of the second support rod 53, a second end of the second support rod 53 is connected to a first end of the third support rod 54, a second end of the third support rod 54 is provided with an annular guide rail, the extending directions of the first support rod 52, the second support rod 53 and the third support rod 54 are in the same plane, and the first support rod 52, the second support rod 53 and the third support rod 54 are combined to form a folded shape, so as to avoid interference between the annular guide rail and other structures when the annular guide rail is rotated.

One end of the annular guide rail is hinged with the support rod. The ring guide comprises a first half-ring structure 55 and a second half-ring structure 58, wherein a first end of the first half-ring structure 55 and a first end of the second half-ring structure 58 are hinged to the support rods, and a second end of the first half-ring structure 55 and a second end of the second half-ring structure 58 are movable and closable such that the first half-ring structure 55 and the second half-ring structure 58 form a ring. In this embodiment, the ring rail is in a two-half ring configuration, so that the ring rail can easily surround the pipe welding interface.

The side of the ring-shaped guide rail is provided with a slide way 56, a part of the flaw detection device 57 is embedded in the slide way 56, and the flaw detection device 57 can slide along the slide way 56, which has the characteristic of easily realizing the movement of the flaw detection device 57 on the ring-shaped guide rail. In other embodiments, the ramps 56 may be disposed on the inner annular surface of the annular rail. In this embodiment, a small-sized motor and a driving wheel are mounted on a portion of the flaw detection device 57 fitted into the chute 56, so that the flaw detection device 57 can be self-driven.

As shown in fig. 8 and 9, the first half-ring structure 55 and the second half-ring structure 58 are provided with slide ways 56 on the side surfaces thereof, and one flaw detection device 57 is mounted in each of the slide ways 56 of the first half-ring structure 55 and the second half-ring structure 58. The runners 56 of the first half-ring structure 55 and the runners 56 of the second half-ring structure 58 are located on either side of the ring rail.

As shown in fig. 1 to 10, the embodiment provides a composite material pipe welding mechanism 20, which is installed at a side of a pipe corner positioning mechanism 10, the pipe corner positioning mechanism 10 includes a hoop assembly 430 for clamping two pipes to be welded, the composite material pipe welding mechanism 20 includes a guide structure horizontally arranged, a pad support 21 is installed on the guide structure, a first end of the pad support 21 is installed on the guide structure, and a pad main body 22 with an end face being a welding face is installed on the pad support 21 main body; the first end of the pad support 21 can translate along the guiding structure, and the pad support 21 can rotate around the guiding structure and drive the pad main body 22 to rotate between the two hoop assemblies 430.

As shown in fig. 8, the tube angle positioning mechanism 10 in the present mechanism can clamp two sections of tubes, and can properly adjust the included angle between the axes of the two tubes, so as to butt the two tubes at a moving angle. In the present embodiment, the guiding structure is installed horizontally in the welding mechanism 20, and the two ends of the guiding structure can cross over the two hoop assemblies 430 to clamp the end surface of the pipe, so that the welding mechanism 20 can move along the guiding structure to the appropriate end surface of the pipe. The guide mechanism in this embodiment is a linear guide post 25 with a circular cross-section. And the first end of the pad holder 21 is annular, and the first end of the pad holder 21 is sleeved on the guide post 25. I.e., in the direction in which the tube axis extends, the welding mechanism 20 is slidable in this direction. After moving to the proper position, the first end of the pad holder 21 can rotate around the guide post 25, so that the pad main body 22 moves to a position opposite to the end surface of the tube, in this embodiment, the pad main body 22 is in a disc-shaped structure, and the end surface of the pad main body 22 is a heating surface.

Preferably, a pad handle 23 for holding is mounted on the pad main body 22, and the pad handle 23 is mounted on a side surface of the pad main body 22 close to the tube corner positioning mechanism 10. The operator can move the pads into position by holding the pad handle 23. In this embodiment, a handle connecting body 24 is mounted on the lateral circumferential surface of the pad main body 22, and the handle connecting body 24 is located on the side close to the corner positioning mechanism 10.

After the certain angle of pipe skew, the pipe terminal surface can not dock, for solving above-mentioned problem, the combined material pipe welding mechanism 20 that this embodiment provided still includes the planer tool device, this planer tool device includes planer tool support 26 and terminal surface and is the planer tool dish 27 of knife face, the first end suit of planer tool support 26 is on guide pillar 25, planer tool dish 27 is installed on planer tool support 26, guide pillar 25 axial translation can be followed to planer tool support 26 first end, and planer tool support 26 can rotate around guide pillar 25 and drive planer tool dish 27 and remove between two staple bolt subassemblies.

As shown in fig. 9, the planing tool device and the welding mechanism 20 are similar to the pad holder 21, and the planing tool is driven by the planing tool holder 26 to move and rotate along the axial direction of the pipe, so that the pipe end can be aligned after being cut, and moved into the pad body 22 after the planing tool 27 is removed, so that the pipe end is welded. The present embodiment can be operated by hand with the planing tool handle 29 to slide the planing tool holder 26 on the guide post 25.

The planing tool assembly comprises a transmission structure 28 for transmitting power to the planing tool disk 27, the transmission structure 28 being mounted on the planing tool support 26, the transmission structure 28 having a power connection aperture 2801 for insertion into the rotating end of the planing tool. In this embodiment, a motor or other devices may be used as a power device, the rotating end of the power device is inserted into the power connection hole 2801, and the transmission structure 28 drives the cutter head 27 to rotate, so as to cut the pipe end without adding a transmission device.

The other side of the tube angle positioning mechanism 10 opposite to the guide post 25 is provided with a safety post 40; the planer tool assembly also has a safety latch 2901, and the safety latch 2901 is rotatable by the planer tool support 26 and is locked to the safety post 40. When the safety latch 2901 is disengaged from the safety post 40, the planer tool disk 27 stops rotating, so that the operator is prevented from being accidentally injured due to misoperation.

In the present embodiment, the bonding surface of the pad main body 22 is perpendicular to the axial direction of the guide post 25; the planing tool surface of the planing tool disc 27 is perpendicular to the axial direction of the guide post 25, so that the pipe cutting and welding angle can be conveniently adjusted.

As shown in fig. 10, the present apparatus provides an inspection mechanism 50, the inspection mechanism 50 is sleeved on the guide pillar 25 by a pillar 51, and a connecting member is formed by a first support rod 52, a second support rod 53 and a third support rod 54, on the connecting member, a first half-ring structure 55 and a second half-ring structure 58 are hinged, and the first half-ring structure 55 and the second half-ring structure 58 can rotate along the hinged position to form a ring structure. When the inspection mechanism 50 is not required, the first and second

half ring structures

55, 58 may be removed from the pipe welding end by rotating the two.

After the first half-ring structure 55 and the second half-ring structure 58 form a ring structure, a slideway 56 for the inspection device 57 to travel is formed, the inspection device 57 can slide along the slideway, in this embodiment, the first half-ring structure 55 and the second half-ring structure 58 are respectively provided with a slideway 56, each slideway 56 is provided with an inspection device 57, so that the two inspection devices 57 can slide along the slideway, in other embodiments, the first half-ring structure 55 and the second half-ring structure 58 can form a ring slideway 56, and only one interface of the inspection device 57 is required to travel in the ring slideway 56. In this embodiment, the control box 30 is used to provide electrical control and power to the device.

As shown in fig. 1-7, the present embodiment provides a pipe angle positioning mechanism 10, which includes a bottom plate 100, a power device 210, and two hoop assemblies 430 respectively clamping pipes to be welded, wherein the hoop assemblies 430 can be driven by a power end of the power device 210 to move in a first direction and make the end surfaces of the pipes contact; the hoop assembly 430 includes a rotation assembly that rotates the tubes relative to the base plate 100.

Specifically, the hoop assembly 430 mounted on the base plate 100 can slide relatively, in this embodiment, the first slide rail set 230 is mounted on the base plate 100, and the hoop assembly 430 can slide along the first slide rail set 230, in other embodiments, the hoop assembly 430 can also be implemented in various forms such as a transmission chain, a transmission belt, and the like. Staple bolt subassembly 430 has two, and wherein one is held tightly with the pipe to first staple bolt subassembly 430, and another pipe is held tightly to second staple bolt subassembly 430, and after two tip heating with the pipe is relative, staple bolt subassembly 430 relative movement makes the tip contact of two pipes, compresses tightly, and two pipes can accomplish the welding.

Wherein the rotating assembly among the hoop assembly 430 can make the pipe rotate a certain angle relative to the bottom plate 100, thereby realizing the welding of the pipe end, for example, after two hoop structures rotate the same angle to the same side, the axle center of two pipes is on the same straight line, then the cutting pipe corresponds the tip, makes the pipe end parallel to each other, can carry out follow-up technology, makes two pipe welding together. When the hoop assembly 430 is rotated to the same side by an angle through the lower rotating assembly, the structure as shown in fig. 2 and 3 is formed.

The hoop assembly 430 comprises a mounting plate 410 and a rotating plate 420, the bottom of which is connected with the mounting plate 410 through a rotating shaft; the rotating plate 420 is provided with a lower anchor ear 431 and an upper anchor ear 432 laterally hinged with the lower anchor ear 431, and when the lower anchor ear 431 and the upper anchor ear 432 are rotated to be in a closed and locked state, an annular structure tightly holding the pipe wall is formed inside.

As shown in fig. 1, the mounting plate 410 is a reference plate, a rotating shaft is disposed at a center position of the mounting plate 410, a rotating end of the rotating shaft extends upward, and the rotating plate 420 is mounted at the rotating end of the rotating shaft and can horizontally rotate around the rotating shaft relative to the mounting plate 410. The rotating plate 420 is provided with a frame body provided with a lower hoop 431, and the frame body comprises support legs, wherein the support legs are triangular and are arranged on one side of the frame body far away from the welding end face. The effect of stabilizer blade is when avoiding two pipe ends butt together, and staple bolt structure whole side direction deflects, can improve welding quality and welding precision. The lower hoop 431 in the embodiment is installed on the support, the upper hoop 432 is hinged to the lower hoop 431 through a hinged portion 433 on the side, the upper hoop 432 and the lower hoop 431 can be locked on the side opposite to the hinged portion 433, the locking structure in the embodiment is mechanical, namely the upper hoop 432 and the lower hoop 431 are rotationally clamped through a positioning handle 435, and after the upper hoop 432 and the lower hoop 431 are tightly held, the outer circumferential wall of the pipe can be tightly held. Each rotating plate 420 is provided with at least one hoop, and in the embodiment, each rotating plate 420 is provided with two hoops, so that the hoops cannot be vertically or horizontally deviated when the end faces of the pipes are compressed.

The staple bolt structure in this embodiment is after locking, and inside all can form the loop configuration who embraces the pipe outer wall tightly, and the loop configuration's of a plurality of staple bolts center all leads to a horizontal plane, no matter how the pipe rotates, the axle core of pipe all is in same straight line, can tentatively guarantee that the pipe welding back tip aligns.

Opposite to the upper anchor ear 432 and the lower anchor ear 431, the inner annular walls of the lower anchor ear 431 and the upper anchor ear 432 are provided with gaskets 434 made of elastic materials, and when the upper anchor ear 432 and the lower anchor ear 431 are in a closed and locked state, the gaskets 434 on the inner walls of the lower anchor ear 431 and the upper anchor ear 432 surround an elastic ring for extruding the pipe wall. The effect of elastic ring can avoid the hard position extrusion pipe wall of staple bolt structure to produce the defect, provides extra power of holding tightly to the pipe in addition, prevents that the pipe from skidding when the tip contacts. The gasket 434 in this embodiment is made of rubber material, but may be made of other organic elastic materials, such as silicone rubber.

Preferably, the shims 434 are provided with circumferentially spaced cutouts. In this embodiment, the spaced hollows in the spacer 434 can generate a smaller deformation when the spacer 434 extrudes the tube wall, so as to provide a holding force to the tube wall through its own elasticity, and the spaced hollows have an advantage of making the spacer 434 have a low weight.

As shown in fig. 1, the base plate 100 has a power unit 210 and a first rail set 230, one hoop assembly 430 is mounted on the rail, and a power end of the power unit 210 is connected to the hoop assembly 430 and can push the hoop assembly 430 to slide along the first rail set 230 to the other hoop assembly 430.

The first slide rail set 230 includes two slide rails extending along a first direction, the first slide block set 240 is mounted on the slide rails, and the hoop assembly 430 is mounted on the first slide block set 240, so that the hoop assembly 430 can follow the first slide block set 240 to move along the first direction. The hoop structure is a first hoop structure, the power end of the power device 210 is connected to the lower portion of the first hoop structure through the connecting block 220, and the power device 210 can drive the first hoop assembly 430 to slide by extending or retracting the power end.

The other hoop assembly 430 is a second hoop assembly 430, and the base plate 100 is provided with a longitudinal adjustment mechanism, which enables the one hoop assembly 430 to translate along a second direction perpendicular to the first direction. When the hoop assembly 430 is rotated and the ends of the tubes are cut, the ends may not be aligned, and the end positions of the tubes can be adjusted by the longitudinal adjustment mechanism so that the ends of the two tubes are aligned.

In this embodiment, the bottom plate 100 is mounted with a second slide rail set 350 and a second slider set 360 mounted on the second slide rail set 350, and the extending direction of the second slide rail set 350 is perpendicular to the extending direction of the first slide rail set 230.

Referring to fig. 1 and 7, in particular, the alignment adjustment mechanism includes a screw 330 having an axis perpendicular to the first direction, a screw seat 320 engaged with the screw 330, and a handwheel 310, wherein the screw seat 320 is mounted at the bottom of a hoop assembly 430, and the hoop assembly 430 is driven by the screw 330 to translate in the second direction. The second hoop assembly 430 and the first hoop assembly 430 are arranged in a mirror image mode, the bottom plate 100 in the second hoop assembly 430 is installed on the second sliding block set 360, when the screw rod 330 is rotated, the second hoop assembly 430 translates along the second sliding rail set 350, and the longitudinal position of the second hoop assembly 430 can be finely adjusted by adjusting the screw rod 330, so that the end portions of the two pipes are opposite. The screw 330 in this embodiment can be adjusted manually, and the hand wheel 310 is rotated to drive the screw 330 to rotate.

The alignment adjustment mechanism includes a locking mechanism for locking the hoop assembly 430 in translation along the lead screw. After the ends of the two tubes are aligned, the second hoop assembly 430 is prevented from translating in the second direction by depressing the locking handle 340, thereby avoiding errors caused by mis-operation or tube end extrusion. In other embodiments, the lead screw 330 can be driven and controlled by an electric control device.

The alignment adjustment mechanism comprises a distance marking pointer 510, a length scale 520 matched with the displacement length of the hoop assembly 430 along the second direction is mounted on the bottom plate 100, and the distance marking pointer 510 is matched with the length scale 520 in position. The side of the bottom plate 100 in this embodiment has a length scale 520, the second hoop assembly 430 is installed with a distance marking pointer 510, and after the second hoop assembly 430 translates, the translation distance of the second hoop assembly 430 can be obtained through the coordinate difference prompted on the length scale 520.

As shown in fig. 6, the angle adjusting device 440 includes an arc-shaped hollow on the rotating plate 420, a cylindrical angle indicator 442 is provided on the mounting plate 410, the angle indicator 442 is inserted into the hollow, and when the rotating plate 420 rotates relative to the mounting plate 410, the angle indicator 442 rotates along the hollow; the hollow-out part is provided with an angle scale 443 matched with the relative rotation angle of the rotating plate 420 and the mounting plate 410. For example, the included angle between the extension line of one section of pipe and the other section of pipe is thirty degrees, the first hoop component 430 rotates by 15 degrees, and the second hoop component 430 rotates by 15 degrees, so that the purpose can be achieved. The first hoop assembly 430 and the second hoop assembly 430 in this embodiment rotate at the same angle, so that the pipe end faces can be aligned after being cut. In this embodiment, the rotation of the hoop assembly 430 is that the rotating plate 420 rotates relative to the mounting plate 410, and an operator can manually rotate the hoop assembly 430 through the angle adjusting handle 441 and visually observe the rotation angle of the hoop assembly 430 through the angle scale 443.

The foregoing is only a preferred embodiment of the present invention, and many variations in the detailed description and the application range can be made by those skilled in the art without departing from the spirit of the present invention, and all changes that fall within the protective scope of the invention are therefore considered to be within the scope of the invention.

Claims

1. The utility model provides a combined material pipe welding port inspection mechanism which characterized in that: the device comprises a guide structure, a support rod, an annular guide rail and a flaw detection device, wherein the guide structure is arranged on the working table of the welding device, and the guide structure extends and spans the welding position of the welding device; the utility model discloses a pipe welding port, including bracing piece, guide structure, bracing piece first end, bracing piece second end installation ring rail, this ring rail can open and encircle at the pipe welding port, the device of detecting a flaw can move along ring rail inner annular surface, and the face of detecting a flaw of the device of detecting a flaw towards the pipe welding port.

2. The composite tube welding port inspection mechanism of claim 1, wherein: the guide structure is a guide pillar with a circular cross section.

3. The composite tube weld port inspection mechanism of claim 2, wherein: the first end of the supporting rod is of an annular structure, and the first end of the supporting rod is sleeved on the outer annular surface of the guide pillar.

4. The composite tube welding port inspection mechanism of claim 1, wherein: the support rods comprise a first support rod, a second support rod and a third support rod, wherein the first end of the first support rod is connected with the guide structure, the second end of the first support rod is connected with the first end of the second support rod, the second end of the second support rod is connected with the first end of the third support rod, the second end of the third support rod is provided with an annular guide rail, the extension directions of the first support rod, the second support rod and the third support rod are in the same plane, and the first support rod, the second support rod and the third support rod are combined to form a folded shape.

5. The composite tube welding port inspection mechanism of claim 1, wherein: one end of the annular guide rail is hinged with the support rod.

6. The composite tube welding port inspection mechanism of claim 5, wherein: the annular guide rail comprises a first semi-ring structure and a second semi-ring structure, wherein the first end of the first semi-ring structure and the first end of the second semi-ring structure are hinged with the support rod, and the second end of the first semi-ring structure and the second end of the second semi-ring structure can move and close, so that the first semi-ring structure and the second semi-ring structure form an annular structure.

7. The composite tube welding port inspection mechanism of claim 5, wherein: the side of the annular guide rail is provided with a slide way, a part of the flaw detection device is embedded in the slide way, and the flaw detection device can slide along the slide way.

8. The composite tube welding port inspection mechanism of claim 6, wherein: the side surfaces of the first semi-ring structure and the second semi-ring structure are provided with slideways, and a flaw detection device is respectively arranged in the slideways of the first semi-ring structure and the second semi-ring structure.

9. The composite tube welding port inspection mechanism of claim 8, wherein: the slideway of the first semi-ring structure and the slideway of the second semi-ring structure are respectively positioned on two side surfaces of the annular guide rail.