CN115533442A - Connecting pipe assembly welding fixing device - Google Patents

Abstract

The invention relates to the technical field of contact pipe assembly welding, and provides a connecting pipe assembly welding fixing device which comprises an elbow clamping seat; the elbow clamping seat comprises two elbow clamping bodies which are detachably connected, and a positioning cavity with openings at two ends is formed between the two elbow clamping bodies; the positioning cavity comprises an elbow section positioned in the middle and straight pipe sections positioned at two ends of the elbow section; and an elbow welding hole is formed in the position, which is opposite to the connection position of the elbow section and the straight pipe section, on the elbow clamping body. By arranging the elbow clamping seat, after the straight pipe and the elbow are assembled, the straight pipe and the elbow can be fixed in the positioning cavity of the elbow clamping seat, so that the assembly quality of the straight pipe and the elbow is ensured; through setting up elbow welding hole on the elbow card body, can make the welding seam between straight tube and the elbow expose in the elbow welding hole, just so can be under the positioning action of elbow cassette, with the welding seam welding between straight tube and the elbow together in elbow welding hole, prevent that the welding from producing angular deformation, and then improved the welding quality of connecting pipe.

Description

Welding and fixing device for connecting pipe group

technical field

The invention relates to the technical field of connecting pipe assembly welding, in particular to a connecting pipe assembly welding fixing device.

Background technique

Blast furnace stave structure, including multi-stage staves, each stave wall is equipped with multiple cooling pipes, the lower end of each cooling pipe is the water inlet, and the upper end is the water outlet, and the water inlet and water outlet are located outside the stave. The furnace shell of the blast furnace, the cooling pipes of the adjacent upper and lower staves are connected sequentially through connecting pipes to form multiple cooling channels from bottom to top. The connecting pipe is a U-shaped structure welded by straight pipes and elbows; the number of connecting pipes is large, the arrangement is tight, and the installation space is small, so the requirements for the welding quality of the connecting pipe are relatively high.

At present, the straight pipe and the elbow are often paired and spot welded together manually, and then the straight pipe and the elbow are welded to make a connecting pipe. Due to the small size of the straight pipe and the elbow, not only is it easy to change the position of the straight pipe and the elbow due to external vibration or collision during spot welding, resulting in poor alignment accuracy; The case of angular deformation leads to poor welding quality of the connecting pipe.

Contents of the invention

The technical problem to be solved by the present invention is to provide a connecting pipe assembly welding fixing device to improve the welding quality of the connecting pipe.

The technical solution adopted by the present invention to solve the technical problem is: the connecting pipe welding fixing device, including the elbow holder; the elbow holder includes two detachably connected elbow holders, and the two elbows A positioning cavity with openings at both ends is formed between the card bodies; the positioning cavity includes an elbow section in the middle and a straight pipe section at both ends of the elbow section; The position is provided with elbow welding holes.

Further, the two elbow card bodies are detachably connected through a bolt structure.

Further, it also includes a straight tube holder; the straight tube holder includes two detachably connected straight tube clamp bodies, and a straight tube cavity with two ends open is formed between the two straight tube clamp bodies; the straight tube clamp body The pipe clip body is provided with a straight pipe welding hole.

Further, one side of the two straight pipe clamping bodies is rotationally connected by a pin, and the other side of the two straight pipe clamping bodies is connected by bolts.

Further, it also includes a card holder bracket; the card holder bracket includes a mounting frame and a support plate fixed on the mounting frame; the support plate is in the shape of a strip, and its upper surface is a downwardly concave arc surface; A pressing device is arranged above the support plate.

Further, the pressing device includes a vertically arranged installation sleeve, a compression rod arranged in the installation sleeve and threadedly connected with the installation sleeve; the installation sleeve is connected to the support plate through a support frame.

Further, the pressing device further includes a pressing block arranged under the installation sleeve; the lower surface of the pressing block is an upwardly concave arc surface.

Further, it is characterized in that the lower end of the pressing rod is movably connected with the pressing block.

Further, there are two pressing devices; the two pressing devices are arranged at intervals along the length direction of the support plate.

Further, it also includes a measuring link; the measuring link includes a telescopic rod and connectors installed at both ends of the telescopic rod; the connector is a cylindrical structure.

The beneficial effects of the present invention are: the connecting pipe assembly welding fixing device provided by the embodiment of the present invention can be fixed in the positioning cavity of the elbow holder after the straight pipe and the elbow are assembled by setting the elbow holder. Avoid the change of the relative position between the straight pipe and the elbow, and ensure the quality of the combination of the straight pipe and the elbow; through the elbow welding hole set on the elbow card body, the weld between the straight pipe and the elbow can be made It is exposed in the welding hole of the elbow, so that under the positioning of the elbow holder, the weld seam between the straight pipe and the elbow can be welded together in the welding hole of the elbow to prevent angular deformation caused by welding, thereby improving The welding quality of the connecting pipe has been improved.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art; obviously, the accompanying drawings in the following description are only These are some embodiments described in the present invention, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of connecting pipe;

Fig. 2 is a perspective view of the elbow holder;

Fig. 3 is the front view of elbow holder;

Fig. 4 is a schematic diagram of the structure after the straight pipe and the elbow are assembled through the elbow holder;

Fig. 5 is a perspective view of a straight tube holder;

Fig. 6 is the front view of the straight pipe holder;

Figure 7 is a top view of the straight tube holder;

Fig. 8 is a schematic diagram of the structure of two sections of straight pipes assembled through the straight pipe holder;

Fig. 9 is a schematic structural view of the deck bracket;

Fig. 10 is a structural schematic view of fixing the straight pipe on the holder bracket;

Figure 11 is a perspective view of the measuring connecting rod;

Fig. 12 is a structural schematic diagram of connecting the measuring connecting rod, the elbow holder and the straight pipe holder together;

Fig. 13 is a structural schematic diagram of connecting the connecting pipe and the cooling pipe through the straight pipe holder.

The reference signs in the figure are: 1-elbow holder, 2-elbow holder, 3-positioning cavity, 4-elbow section, 5-straight pipe section, 6-elbow welding hole, 7-straight pipe holder , 8-straight tube card body, 9-straight tube cavity, 10-straight tube welding hole, 11-cassette bracket, 12-installation frame, 13-support plate, 14-pressing device, 15-installation sleeve, 16 - Compression rod, 17- support frame, 18- measuring connecting rod, 19- telescopic rod, 20- connecting head, 21- connecting pipe, 22- straight pipe, 23- elbow, 24- cooling pipe, 25- connecting ear Plate, 26-connecting bolt, 27-connecting nut, 28-pin shaft, 29-fixed ear plate, 30-fixed bolt, 31-fixed nut, 32-press block.

detailed description

In order to make those skilled in the art better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. In the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.

Referring to FIG. 1 , the connecting pipe 21 is roughly U-shaped, mainly composed of three sections of straight pipes 22 and two elbows 23 butt welded, and is used to connect the water inlet and water outlet of adjacent cooling pipes 24 . The connecting pipe assembly welding fixture provided by the embodiment of the present invention is used to assist workers to assemble and weld the straight pipe 22 and the elbow 23 together, so as to improve the welding quality of the connecting pipe 21 .

Referring to Fig. 2 and Fig. 3, the connecting pipe assembly welding fixture provided by the embodiment of the present invention includes an elbow holder 1; the elbow holder 1 includes two detachably connected elbow holders 2, and A positioning cavity 3 with openings at both ends is formed between two elbow card bodies 2; the positioning cavity 3 includes an elbow section 4 in the middle and straight pipe sections 5 at both ends of the elbow section 4; on the elbow card body 2 An elbow welding hole 6 is provided at the position where the elbow section 4 is connected to the straight pipe section 5 .

The elbow holder 1 is used to fix the straight pipes and elbows that are grouped together. Referring to Fig. 2, the elbow card holder 1 includes two elbow card bodies 2, one of which is arranged outside the other elbow card body 2; the two elbow card bodies 2 are detachably connected, And a positioning cavity 3 with both ends open is formed between them.

The two elbow card bodies 2 are detachably connected through a bolt structure. Specifically, the bolt structure includes connecting ear plates 25 respectively arranged on the two elbow card bodies 2, and the connecting ear plates 25 on the two elbow card bodies 2 are in one-to-one correspondence, passing through the corresponding two in turn. A connecting bolt 26 connecting the ear plate 25 is screwed on a connecting nut 27 at the end of the connecting bolt 26 . Preferably, two ends of each elbow card body 2 are respectively provided with two connecting ear plates 25 arranged on both sides of the positioning cavity 3 .

Referring to Fig. 3, the positioning cavity 3 includes an elbow section 4 in the middle and straight pipe sections 5 at both ends along its extending direction; the elbow section 4 is used for positioning the elbow 23; the straight pipe section 5 is used for For positioning the straight pipe 22. The position of aa' line and bb' line in Figure 3 is the position where the elbow section 4 is connected to the straight pipe section 5; the position of the elbow card body 2 facing the aa' line and bb' line is provided with an elbow welding hole 6. Preferably, the elbow welding hole 6 is an elongated hole extending along the circumferential direction of the positioning cavity 3 . Further, an elbow welding hole 6 is also provided between the two elbow card bodies 2 facing the aa' line and the bb' line.

The combination welding process of the straight pipe 22 and the elbow 23 will be described below with reference to FIG. 4 . Referring to Fig. 4, first place the elbow 23 in the elbow section 4 between the two elbow card bodies 2, and then place the two straight pipes 22 in the straight pipe section 5 between the two elbow card bodies 2 After adjusting the gap between the straight pipe 22 and the elbow 23, the two elbow clamp bodies 2 are connected together through the bolt structure, and then the straight pipe 22 and the elbow 23 are clamped by the two elbow clamp bodies 2 Fixed; at this time, the butt weld between the straight pipe 22 and the elbow 23 is facing the position of the aa' line and the bb' line, so that the butt weld between the straight pipe 22 and the elbow 23 is partially exposed to the elbow In the welding hole 6, the worker first welds the part of the weld so that the straight pipe 22 and the elbow 23 are connected together to prevent the relative position between them from changing, then remove the elbow holder 1, and then put the straight pipe 22 Weld together with the rest of the butt weld between the elbows 23.

The connecting pipe assembly welding fixing device provided by the embodiment of the present invention, by setting the elbow holder 1, when the straight pipe 22 and the elbow 23 are paired, they can be fixed in the positioning cavity 3 of the elbow holder 1, avoiding straight The relative position of the pipe 22 and the elbow 23 changes, which ensures the pairing quality of the straight pipe 22 and the elbow 23; through the elbow welding hole 6 arranged on the elbow card body 2, the straight pipe 22 and the elbow can be The welding seam between 23 is exposed in the elbow welding hole 6, so that the welding seam between the straight pipe 22 and the elbow 23 can be welded in the elbow welding hole 6 under the positioning of the elbow holder 1 Together, it prevents angular deformation of the welding, thereby improving the welding quality of the connecting pipe.

The straight pipe 22 in the connecting pipe 21 can be a spliced structure; when the straight pipe 22 is welded by multiple sections, in order to improve the welding quality of the straight pipe 22, refer to Fig. 5 to Fig. 7, the connecting pipe group provided by the embodiment of the present invention The welding and fixing device also includes a straight pipe holder 7; the straight pipe holder 7 includes two detachably connected straight pipe holders 8, and a straight pipe with openings at both ends is formed between the two straight pipe holders 8 Cavity 9; the straight pipe clamp body 8 is provided with a straight pipe welding hole 10.

The straight pipe holder 7 is used to fix the straight pipes 22 that are grouped together with the straight pipes 22 . Referring to FIG. 5 , the straight tube holder 7 includes two straight tube clamp bodies 8 ; the two straight tube clamp bodies 8 are detachably connected, and a straight tube chamber 9 with both ends open is formed between them. Referring to FIG. 6 , the shape of the straight tube lumen 9 is adapted to the shape of the straight tube 22 for positioning the straight tube 22 . Referring to Fig. 5 and Fig. 7, the straight pipe clamping body 8 is provided with a straight pipe welding hole 10, and the straight pipe welding holes 10 on the two straight pipe clamping bodies 8 correspond to each other. Preferably, the straight tube welding hole 10 is an elongated hole extending along the circumference of the straight tube lumen 9 .

The two straight tube clamping bodies 8 are detachably connected, for example, one side of the two straight tube clamping bodies 8 is rotationally connected by a pin, and the other side of the two straight tube clamping bodies 8 is connected by bolts. Specifically, referring to FIG. 6 , the straight tube clamping body 8 is roughly arc-shaped, and the right sides of the two straight tube clamping bodies 8 are connected by a pin shaft 28 so that the two straight tube clamping bodies 8 can rotate relatively around the pin shaft 28 , the left sides of the two straight tube clamp bodies 8 are provided with fixed ear plates 29, and the fixed bolts 30 are connected with the fixed nuts 31 after passing through the through holes on the two fixed ear plates 29 in turn.

The welding process of the straight pipe 22 and the combination of the straight pipe 22 will be described below with reference to FIG. 8 . Referring to Figure 8, first open the two straight tube clamps 8, place the two straight tubes 22 in the straight tube cavity 9 between the two straight tube clamps 8, and adjust the gap between the two straight tubes 22 , and make the butt welding seam between the two straight pipes 22 face the straight pipe welding hole 10, connect the two straight pipe clamping bodies 8 together by bolts, and then connect the two straight pipe clamping bodies 8 through the two straight pipe clamping bodies 8 The pipe 22 is clamped and fixed. At this time, the part of the butt welding seam between the two straight pipes 22 is exposed in the straight pipe welding hole 10. The worker first welds this part of the seam so that the two straight pipes 22 are connected together. , to prevent the relative position between them from changing, then remove the straight tube holder 7, and then weld the rest of the butt weld between the two straight tubes 22 together.

The connecting pipe assembly welding fixing device provided by the embodiment of the present invention, by setting the straight pipe holder 7, when the two straight pipes 22 are paired, they can be fixed in the straight pipe cavity 9 of the straight pipe holder 7 for positioning, The relative position of the two straight pipes 22 is avoided from changing, and the pairing quality of the two straight pipes 22 is ensured; The weld seam is exposed in the straight pipe welding hole 10, so that under the positioning effect of the straight pipe holder 7, the weld seam between the two straight pipes 22 can be welded together in the straight pipe welding hole 10 to prevent welding from occurring. Corner deformation, thereby improving the welding quality of the straight pipe 22.

Referring to Fig. 9, the connecting pipe assembly welding and fixing device provided by the embodiment of the present invention also includes a deck bracket 11; the deck bracket 11 includes a mounting frame 12 and a support plate 13 fixed on the mounting frame 12; the support plate 13 is an elongated structure, and its upper surface is a downwardly concave arc surface; above the support plate 13, a pressing device 14 is arranged. The support plate 13 is used to support the straight pipe 22 , and the pressing device 14 is used to compress the straight pipe 22 placed on the support plate 13 . In order to compress the two straight pipes 22 at the same time, preferably, there are two compression devices 14 ; the two compression devices 14 are arranged at intervals along the length direction of the support plate 13 .

Referring to Fig. 9, the pressing device 14 includes a vertically arranged installation sleeve 15, a compression rod 16 which is arranged in the installation sleeve 15 and is threadedly connected with the installation sleeve 15; the installation sleeve 15 is supported by The frame 17 is connected to the support plate 13 . An internal thread section is provided in the installation sleeve 15, an external thread section is provided on the pressing rod 16, the compression rod 16 passes through the installation sleeve 15, and is threadedly connected with the installation sleeve 15, By rotating the pressing rod 16 , the pressing rod 16 can be moved downward, and then the straight pipe 22 is pressed against the support plate 13 by the lower end of the pressing rod 16 . Preferably, the pressing rod 16 is a bolt. The pressing device 14 also includes a pressing block 32 arranged below the installation sleeve 15; match. Preferably, the lower end of the compression rod 16 is movably connected with the compression block 32, so that the compression rod 16 can rotate relatively with the compression block 32; this not only connects the compression rod 16 with the compression block 32, but also prevents the compression from occurring. In the case that the tight block 32 is lost, and when the pressing bar 16 drives the pressing block 32 to move downward, the pressing block 32 can be controlled not to rotate.

The assembly and welding process of the connecting pipe 21 will be described below with reference to FIG. 10 . Referring to Fig. 10, first use the elbow holder 1 to group the straight pipe 22 and the elbow 23 together, and use the straight pipe holder 7 to group the two straight pipes 22 together; The straight pipe 22 is placed on one end of the support plate 13, and the straight pipe 22 is pressed against the support plate 13 by one of the pressing devices 14; One end, utilize another pressing device 14 to compress this straight pipe 22 on the support plate 13; At the same time, in the welding process, the pressing device 14 can also be controlled to adjust the angle of the straight pipe 22, so as to realize the circular circumferential welding operation of the weld seam, so as to achieve multiple position welding operations after one positioning, and prevent Welding produces angular distortion.

Referring to Fig. 11, the connecting pipe assembly welding fixture provided by the embodiment of the present invention also includes a measuring connecting rod 18; the measuring connecting rod 18 includes a telescopic rod 19 and connectors 20 installed at both ends of the telescopic rod 19; the connector 20 is a cylindrical structure. The outer diameter of the connector 20 is equal to the outer diameter of the straight pipe 22 . By setting the measuring connecting rod 18, it can cooperate with the elbow holder 1 and the straight pipe holder 7 to measure the actual length of the straight pipe 22 in the connecting pipe 21, so as to prevent the straight pipe 22 from being cut out according to the design size and cause it to be different from the straight pipe 22. Actual size does not match.

The measurement process of the length of the straight pipe 22 in the connecting pipe 21 will be described below with reference to FIG. 12 . Referring to Fig. 12, three measuring connecting rods 18, two elbows 23, two elbow holders 1, and two straight pipe holders 7 are provided; The measuring connecting rod 18 is paired with the elbow 23, and is fixedly connected by the elbow holder 1; It is fixedly connected; then record the length of the measuring connecting rod 18, and blank the replaced straight pipe 22 according to the length of the measuring connecting rod 18, so that the actual length of the straight pipe 22 in the connecting pipe 21 can be accurately obtained.

Referring to Fig. 13, after the welding of the connecting pipe 21 is completed, the straight pipe 22 at both ends of the connecting pipe 21 can be combined with the cooling pipe 24, and they can be fixed together by the straight pipe holder 7, and then the straight pipe can be welded in the hole Weld the weld seam within 10 to ensure the welding quality.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. The connecting pipe assembly welding fixing device is characterized by comprising an elbow clamping seat (1); the elbow clamping seat (1) comprises two elbow clamping bodies (2) which are detachably connected, and a positioning cavity (3) with openings at two ends is formed between the two elbow clamping bodies (2); the positioning cavity (3) comprises an elbow section (4) positioned in the middle and straight pipe sections (5) positioned at two ends of the elbow section (4); and an elbow welding hole (6) is formed in the elbow clamping body (2) at the position opposite to the connection position of the elbow section (4) and the straight pipe section (5).

2. The connecting tube assembly welding fixing device of claim 1, wherein the two elbow clamping bodies (2) are detachably connected through a bolt structure.

3. The connecting tube assembly welding fixing device of claim 1, further comprising a straight tube clamping seat (7); the straight pipe clamping seat (7) comprises two detachably connected straight pipe clamping bodies (8), and a straight pipe cavity (9) with two open ends is formed between the two straight pipe clamping bodies (8); the straight pipe clamping body (8) is provided with a straight pipe welding hole (10).

4. The connecting pipe assembly welding fixing device as claimed in claim 3, wherein one side of the two straight pipe clamping bodies (8) is rotatably connected through a pin shaft, and the other side of the two straight pipe clamping bodies (8) is connected through a bolt.

5. The connecting pipe installing and welding fixing device of claim 1, further comprising a clamping seat support (11); the clamping seat support (11) comprises a mounting frame (12) and a supporting plate (13) fixed on the mounting frame (12); the supporting plate (13) is of a long strip-shaped structure, and the upper surface of the supporting plate is a downward-sunken arc-shaped surface; a pressing device (14) is arranged above the supporting plate (13).

6. The connecting pipe assembly welding fixing device of claim 5, wherein the pressing device (14) comprises a vertically arranged mounting sleeve (15), and a pressing rod (16) which is arranged in the mounting sleeve (15) and is in threaded connection with the mounting sleeve (15); the mounting sleeve (15) is connected with the support plate (13) through a support frame (17).

7. The connecting tube assembly welding fixture of claim 6, characterized in that the hold-down device (14) further comprises a hold-down block (32) disposed below the mounting sleeve (15); the lower surface of the pressing block (32) is an arc-shaped surface which is concave upwards.

8. The connecting tube assembly welding fixture of claim 7, characterized in that the lower end of the hold-down bar (16) is movably connected with a hold-down block (32).

9. The connecting tube assembly welding fixture of claim 5, 6, 7 or 8, wherein the number of said pressing means (14) is two; the two pressing devices (14) are arranged at intervals along the length direction of the supporting plate (13).

10. The tie tube assembly welding fixture of claim 3, further comprising a measuring link (18); the measuring connecting rod (18) comprises a telescopic rod (19) and connecting heads (20) arranged at two ends of the telescopic rod (19); the connector (20) is of a cylindrical structure.

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