JPS6254598A - Supporting device for angle pipe or the like in tentative assembly for butt welding of piping - Google Patents

Abstract

PURPOSE:To permit the easy tentative assembly of butt welding by clamping and fixing the end of an angle pipe, etc. which is perpendicular to the axis of a straight pipe onto a supporting base and finely and manually adjusting the height and position of the angle pipe, etc. by using screws, springs, etc. CONSTITUTION:Both end sides of the straight pipe 15 are respectively imposed on the V-shaped free bearings 17 on a supporting stand 16 and the height of the supporting stand 16 is adjusted to horizontally support the straight pipe 15. The angle pipe 2 with the aperture side at the end thereof faced downward is placed on the supporting base 1 and a clamp 7 is moved in an opposite direction by rotating a screw shaft of a handle 8 to grasp and fix the end of the angle pipe 2. The height of a base plate frame 9 is then adjusted by a handle 10 to adjust the height position, etc. of the base 1 so that the height and axial direction of the aperture face at the straight pipe 15 side end of the angle pipe 2 are aligned to the straight pipe 15. The space between the straight pipe 15 and the angle pipe 2 is further adjusted correctly by means of a jig, etc. The position of the angle pipe 2 is then manually and finely adjusted by utilizing compression coil springs of deformed columnar bodies 12. The tentative assembly work for butt welding is thus easily executed.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to butt welding of L-shaped pipes and T-shaped pipes that are butt welded to T-straight pipes in the temporary assembly of butt welding of piping. The present invention relates to a support device for an L-shaped tube, etc., for centering and maintaining proper spacing at the same time.

(Prior art and its problems) In the temporary assembly of butt welding of piping, it is necessary to center the L-shaped pipe or T-shaped pipe to be butt welded to the straight pipe and at the same time set the proper spacing. The conventional method for holding the pipe is one in which one worker holds the L-shaped pipe or the like in their hands and supports it at an appropriate position relative to the straight pipe, and another worker holds the L-shaped pipe, etc.
), As shown in (b), temporary assembly is carried out by directly temporary welding the base metals together, or by temporarily welding a flat steel piece to the outer periphery of both base metals.

However, with such conventional methods, it is very difficult to maintain accurate centering and proper spacing, and therefore, after the above-mentioned temporary welding, the end opening surface of the L-shaped tube in the right angle direction is aligned with the zenith direction. Level gauges were applied to the opening surface in two directions at right angles, and adjustments were made by hammering.

The above method was extremely difficult and required not only skill, but also two to three workers, and was time consuming.

Attempts have also been made to properly support L-shaped pipes, etc. with support stands, but all previous attempts have attempted to support them rigidly, so the support stand is based on An adjustment mechanism is required for each degree of freedom, which not only complicates the device but also complicates operation, which is impractical.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned conventional problems, and will be described below based on examples.

In FIGS. 1 to 4 corresponding to the embodiment, reference numeral 1 is a support stand, and this support stand 1 has a clamp device 4 on the upper side for fixing the end of the L-shaped tube 2 or the T-shaped tube 3. will be established. The illustrated clamping device 4 includes threaded portions 5 having opposite threads on both sides,
5' is mounted on the support stand 1, and female threaded parts formed on clamp members 7, 7 partially protruding above the support stand are screwed into these threaded parts 5. The ends of the rectangular tube 2 are fixed by moving the respective clamp members 7, 7 in opposite directions and backward directions by rotating the screw shaft 6 using a handle 8 or the like. In addition, any suitable clamping mechanism may be applied to the clamping device 4 as long as it is configured to fix the end portion of the rectangular tube 2 and the like. Next, reference numeral 9 denotes a base frame, and the base frame 9 is configured to be height adjustable by an appropriate mechanism. Reference numeral 10 is a height adjustment handle. Accordingly, the present invention is such that the support stand 1 is supported above the base frame 9 by an appropriate number of deformable columns 12 which are made up of compression coil springs 11. In the illustrated example, reference numeral 13 is a cover, and 14 is a support bolt with play on the base frame 9 side, and these are the compression coil springs 11 simply interposed between the support base 1 and the base frame 9. However, the compression coil spring 11 can be installed in any appropriate manner. For example, if both ends of the compression coil spring 11 are fixed to the support base 1 and the base frame 9, these can be prevented. It does not need to be provided.

(Function) In the above configuration, the present invention will now be described in detail along with an example of a temporary assembly operation when butt welding the L-shaped pipe 2 to the straight pipe 15.

First, as shown in FIG. 4, both ends of the straight pipe 15 are placed on free bearings 17 arranged in a V-shape on the upper part of the support stands 16, and the height of these support stands 16 is adjusted. By adjusting, this straight pipe 15 is supported horizontally. (In FIG. 4, the apparatus of the present invention is shown enlarged for convenience.) Next, the L-shaped V 2 to be welded to the straight pipe 15 is placed with its end opening facing down. It is placed on the support stand 1 of the support device, and the clamp members 7, 7 are moved in opposite directions by rotation of the screw shaft 6 by the handle 8 or the like, and the ends of the curvilinear tube 2 are clamped and fixed.

Thereafter, the height of the base frame 9 is adjusted using the handle 10, and the height of the support base 1 is adjusted, and the position etc. are also adjusted so that the end opening on the straight pipe 15 side of the rectangular tube 2 is adjusted. The height and axial direction of the surfaces are aligned with the straight pipe 15, and an appropriate gap maintaining jig (not shown) is inserted between the straight pipe 15 and the L-shaped pipe 2 to appropriately adjust the interval. And while adjusting like this,
The two are connected and held together using a pipe inner clamp or the like disclosed in the specification and drawings of other applications filed by the applicant, such as Japanese Patent Application No. 64783 of 1983, and welding is performed in this state.

However, even with just the above adjustment, there is usually a slight error between the bevel surface of the straight pipe 15 and the bevel surface of the L-shaped pipe 2, so it is necessary to connect the two using the pipe inner clamp, etc. Such errors must be corrected prior to support. However, the error is 6 in the three-dimensional orthogonal coordinate system.
Since all degrees of freedom are possible, the support 1 supporting the L-shaped tube 2 must be adjustable in all six such degrees of freedom, and the support 1 must be rigid. If it were to be supported, an adjustment mechanism would be required for each of the six degrees of freedom of the three-dimensional orthogonal coordinate system, which would not only complicate the device but also complicate the operation, which is impractical.

However, in the present invention, the support stand 1 is supported above the base frame 9 by an appropriate number of deformable deformable columns 12 formed by compression coil springs 11.
The support stand 1 can freely move in each of the six degrees of freedom as partially shown in FIGS. The L-tube 2 can be finely adjusted by simply moving the L-tube 1 by hand, thus eliminating the need for another worker to hold the L-tube 2 and move it as specified, reducing human labor. Good centering and proper spacing can be achieved using the visual, auditory, and muscular strength of the personnel. In addition, for example, welding may be applied to other applications of the applicant,
That is, it can be carried out using the support device etc. disclosed in the specification and drawings of Patent Wi (1) filed on September 2, 1985. Furthermore, although the above describes the temporary assembly work when butt welding the L-shaped pipe 2 to the straight pipe 15, the support device of the present invention can also be used for the T-shaped pipe 3 as shown in Fig. 3 (c).
) can of course be applied.

(Effects of the Invention) As described above, the present invention is based on a support base provided with a clamp device for fixing the end of an L-shaped pipe or the like on the upper side, by an appropriate number of deformable deformable pillars made of compression coil springs. By supporting the underframe above, it is possible to move freely in each of the 6 degrees of freedom by simply moving the support stand. Temporary butt welding work can be carried out with the pipe fixed to the top of the support base, so there is no need for other workers to hold the L-shaped pipe and move it as specified, and it saves human labor. This has the effect of allowing the worker to maintain proper centering and proper spacing using his or her vision, hearing, and muscle strength. Furthermore, since the present invention does not require an adjustment mechanism for each of the six degrees of freedom of a three-dimensional orthogonal coordinate system, which is necessary when rigidly supporting the support base, the configuration is not complicated and can be configured at low cost. It has the advantage that it is very easy to obtain and operate.

[Brief explanation of the drawing]

1 to 4 correspond to embodiments of the present invention, where FIG. 1 is an explanatory perspective view of the whole, and FIG. 2 (a). (b) is an explanatory plan view, an explanatory side view, and Fig. 3 (a), respectively.
), (b), and (c) are explanatory side views showing a part of the operation, FIG. 4 is an explanatory perspective view of the state of use, and FIG.
Figures (a) and (b) are explanatory perspective views of the conventional method, respectively. Reference numerals 1... Support stand, 2... L-shaped tube, 3... T-shaped tube, 4... Clamp device, 5... Threaded portion, 6... Threaded shaft. 7... Clamp member, 8... Handle, 9... Base frame. 10...Handle, 11...Compression coil spring. 12... Deformed column body, 13... Cover, 14... Support bolt, 15... Straight pipe, 16... Support stand,
17. ...Free bearing.

Claims (1)

[Claims] A support stand provided with a clamp device for fixing the end of an L-shaped pipe or the like on the upper side is supported above a base frame by an appropriate number of deformable deformable columns made of compression coil springs. Support device for L-shaped pipes, etc. during temporary assembly of butt welding of piping