Welding device for aligning flange and elbow of large-diameter pipeline

Abstract

The welding device comprises a base, stand columns, a flange fixing frame and transverse rods, the stand columns are installed on the two sides of the base, the two ends of the flange fixing frame are connected with the stand columns in a sliding mode, the transverse rods are installed at the two ends of the stand columns, and the welding device further comprises transmission screws. One end of the transmission screw is connected with the flange fixing frame, the other end of the transmission screw penetrates through the locking nut and the cross rod, the locking nut is located on the lower side of the cross rod, a flange is fixed to the flange fixing frame, and an elbow to be aligned is placed on the base. The device is simple in structure, low in cost and convenient to use.

Description

Technical Field

[0001] The utility model relates to a welding device, in particular to a welding device used for butting large-diameter pipeline flanges and elbows. Background Art

[0002] In the prior art, transmission adjustment screws are mostly installed on both sides of the flange fixing device. When welding the flange and elbow of a large-diameter pipe, it is inconvenient for the operator to manually align the flanges. In particular, when aligning the large-diameter pipe and the elbow, in the process of adjusting the height and verticality, two people are required to simultaneously perform the lifting and lowering adjustments through the adjustment screws on both sides, or a single person is required to perform the adjustments twice. The operation is inconvenient during the adjustment process, there is asynchrony, the adjustment time is long, the adjustment accuracy is not high, and the work efficiency is low. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a welding device for large-diameter pipe flanges and elbows, which has a simple structure, low cost and is easy to use.

[0004] The technical solution adopted in this utility model is:

[0005] A welding device for connecting large-diameter pipe flanges and elbows includes a base, a column, a flange fixing frame and a cross bar. The columns are installed on both sides of the base, the two ends of the flange fixing frame are slidably connected to the columns, and the cross bar is installed at both ends of the column. It also includes a transmission screw, one end of the transmission screw is connected to the flange fixing frame, and the other end passes through a locking nut and a cross bar. The locking nut is located on the lower side of the cross bar. The flange is fixed on the flange fixing frame, and the elbow to be connected is placed on the base.

[0006] Preferably, the flange is fixed to the flange fixing frame by fixing screws, flat washers, spring washers and nuts.

[0007] Preferably, the flange fixing frame is a T-shaped structure, and an adjusting screw 8 is installed at the lower end thereof for fine-tuning the verticality of the flange.

[0008] Preferably, it further comprises an adjusting hand wheel, wherein the adjusting hand wheel is connected with the thread on the top end of the transmission screw rod through a threaded hole.

[0009] Preferably, a guide seat is installed at the rear of the flange fixing frame, and the guide seat passes through the column so that the flange fixing frame can only move in the vertical direction.

[0010] Preferably, the transmission screw is connected to the flange fixing frame and the midpoint of the cross bar.

[0011] Preferably, the columns are made of DN65 seamless steel pipes.

[0012] Preferably, the flange fixing frame and the base are both welded from No. 10 channel steel.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the device of the present invention is easy to operate, that is, a single person can adjust the height by adjusting the hand wheel, and by adjusting the screws, the fixing points of the flange fixing frame and the flange are increased, thereby improving the matching accuracy; the device of the present invention can help operators to match during the welding process of flanges and elbows, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an axonometric view of a large-diameter pipe flange and elbow butt welding device provided by the utility model.

[0015] Figure 2 The utility model provides a front view of a large-diameter pipe flange and elbow butt welding device.

[0016] Figure 3 The utility model provides a left side view of a large-diameter pipe flange and elbow butt welding device.

[0017] Figure 4 The utility model provides a top view of a large-diameter pipeline flange and elbow butt welding device.

[0018] Figure 5 The utility model provides a schematic diagram of the method of using a flange fixing frame of a large-diameter pipe flange and elbow butt welding device.

[0019] Figure 6 The utility model provides a welding schematic diagram of a large-diameter pipe flange and elbow butt welding device.

[0020] Description of the drawings: 1 base, 2 column, 3 flange fixing frame, 4 cross bar, 5 transmission screw, 6 adjusting handwheel, 7 locking nut, 8 adjusting screw, 9 flange, 10 fixing screw, 11 flat washer, 12 spring washer, 13 nut, 14 guide seat, 15 elbow. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] like Figures 1 to 6As shown, a welding device for connecting large-diameter pipe flanges and elbows includes a base 1, a column 2, a flange fixing frame 3, a crossbar 4, a drive screw 5, an adjustment handwheel 6, a lock nut 7, and an adjustment screw 8. The column 2 is vertically fixedly mounted on the base 1, and the flange fixing frame 3 is slidably mounted on the column 2. The crossbar 4 is horizontally fixedly mounted on the top of the column 2. One end of the drive screw 5 is fixedly mounted on the flange fixing frame 3, and the flange fixing frame 3 can be adjusted in height up and down through the drive screw 5. The adjustment handwheel 6 is mounted on the drive screw 5. The lock nut 7 is mounted on the drive screw 6. The adjustment screw 8 is mounted on the lower end of the flange fixing frame 3. In this embodiment, the flange fixing frame 3 is drilled with mounting holes for the flange 9, and the flange 9 is fixed to the flange fixing frame 3 with a fixing screw 10, a flat washer 11, a spring washer 12, and a nut 13. The elbow 15 to be connected is placed on the base 1.

[0023] like Figure 5 As shown, the elbow is placed on the base 1, and the flange 9 is fixed on the flange fixing frame 3, so that the flange 9 remains vertical to the elbow 15 during installation; the flange 9 and the elbow 15 are first spot-welded and fixed, and then argon-filled welded.

[0024] The flange fixing frame 3 is welded from 10# channel steel and has a T-shaped structure.

[0025] The flange fixing frame 3 can be raised and lowered; one end of the transmission screw 5 is fixedly mounted on the flange fixing frame 3, and the other end extends out of the cross bar 4; the adjustment hand wheel 6 is located at the upper part of the cross bar 4 and is mounted on the transmission screw 5; the locking nut 7 is located at the lower part of the cross bar 4 and is mounted on the transmission screw 5.

[0026] The adjustment handwheel 6 has three evenly spaced handles on its exterior, with a threaded hole in the center. This threaded hole mates with the threads of the drive screw 5. The operator rotates the adjustment handwheel 6, causing the drive screw 5 to move the flange mount 3 vertically. When the flange 9 on the flange mount 3 is aligned with the center height of the elbow 15, the lock nut 7 is tightened, locking the flange mount 3 in place and allowing batch welding to proceed.

[0027] A guide seat 14 is installed at the rear of the flange fixing frame 3; the guide seat 14 passes through the column 2, thereby limiting the flange fixing frame 3 to move only in the vertical direction.

[0028] The adjusting screw 8 is installed at the lower end of the flange fixing frame 3 and is used to adjust the verticality of the flange 6.

[0029] The column 2 is made of DN65 seamless steel pipe.

[0030] The base 1 is welded with 10# channel steel.

[0031] The utility model improves the existing butt welding device, has accurate alignment, and greatly improves work efficiency.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0033] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A welding device for connecting large-diameter pipe flanges and elbows, comprising a base (1), a column (2), a flange fixing frame (3) and a crossbar (4), wherein the column (2) is mounted on both sides of the base (1), the two ends of the flange fixing frame (3) are slidably connected to the column (2), and the crossbar (4) is mounted on both ends of the column (2), characterized in that: The invention also includes a transmission screw (5), one end of which is connected to the flange fixing frame (3), and the other end of which passes through a locking nut (7) and a cross bar (4), wherein the locking nut (7) is located on the lower side of the cross bar (4), the flange (9) is fixed on the flange fixing frame (3), and the elbow (15) to be matched is placed on the base (1).

2. A welding device for large-diameter pipe flanges and elbows according to claim 1, characterized in that: The flange (9) is fixed to the flange fixing frame (3) by means of fixing screws (10), flat washers (11), spring washers (12) and nuts (13).

3. A welding device for large-diameter pipe flanges and elbows according to claim 2, characterized in that: The flange fixing frame (3) is a T-shaped structure, and an adjusting screw (8) is installed at the lower end thereof.

4. The welding device for large-diameter pipe flanges and elbows according to claim 1, characterized in that: It also includes an adjusting hand wheel (6), which is connected to the threaded portion of the top end of the transmission screw rod (5) through a threaded hole.

5. The welding device for large-diameter pipe flanges and elbows according to claim 1, characterized in that: A guide seat (14) is installed at the rear of the flange fixing frame (3), and the guide seat (14) passes through the column (2), so that the flange fixing frame (3) can only move in the vertical direction.

6. A welding device for large-diameter pipe flanges and elbows according to claim 5, characterized in that: The transmission screw (5) is connected to the midpoint of the flange fixing frame (3) and the cross bar (4).

7. The welding device for large-diameter pipe flanges and elbows according to claim 1, characterized in that: The upright column (2) is made of DN65 seamless steel pipe.

8. The welding device for large-diameter pipe flanges and elbows according to claim 1, characterized in that: The flange fixing frame (3) and the base (1) are both welded from No. 10 channel steel.

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