JPS6021199A - Rotating, holding and pressing device for work - Google Patents

Abstract

PURPOSE:To provide a titled device which permits easy and stable welding and straightening without changing the preparatory plan for the operation by providing a mechanism which holds freely rotatably a main pipe or the like from both ends and drives rotationally said pipe and a mechanism for pressing the pipe. CONSTITUTION:A pin 22 or 23 fitting to the flange 2 of a main pipe 1 is usably prepared and the pipe 1 is hoisted with a crane to insert one end thereof onto the stepped shaft part 21 of a driving shaft 10. The pin is inserted into the hole of the flange 2. A mechanism 17 for supporting a driven shaft provided in the rear end position is then moved to insert the stepped shaft part 36 thereof to the other end of the pipe 1 and the mechanism 17 is fixed to a rail 16. A motor 27 is thereafter started to rotate a branch pipe 3 attached to the pipe 1 to the angle at which welding in a flat position is accomplished and a pressing mechanism 18 is moved to an adequate position. A pressing clamper 41 is lifted in this stage to press the pipe 1 and welding is performed in the state of applying reverse strain thereto. The pipe 1 is again rotated to an adequate angle after the welding a semicircle of the branch 3 and welding is performed in the state of applying the reverse strain to the pipe by the clamper 41 in the same way as before.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides a method for rotatably holding the main pipe and removing distortion of the main pipe caused by welding, for example, when welding a main pipe and a ramus constituting a connecting pipe in a fluid device. The present invention relates to a device for applying pressure.

When manufacturing a connecting pipe made by welding several branch pipes to a main pipe, the steps are shown in Figures 1 to 4! equipment is used. In other words, Fig. 2 shows a holding device during welding, in which (1) is the main pipe, flanges (2) are temporarily attached to both ends of the main pipe, and a plurality of branch pipes (3) are attached at appropriate locations along the entire length. are each temporarily attached. Note that (4) is a flange welded to the branch pipe. (5) is a support mechanism that supports the main pipe t1) from the left and right sides, and the base (
6) on which the pin (7) acts as a full fulcrum for tilting operation. Therefore, when welding the branch pipe (3) temporarily attached to the main pipe t1), first weld one side of the inclined side, then tilt it to the opposite side and weld the remaining half circumference.

Figures 8 and 4 show a device for removing strain generated in the connecting pipe after welding is completed, and the support mechanism (8) of the main pipe (1) is fixed oppositely on the surface plate (9). A thread αυ for level measurement is stretched across the top of the ball αQ with a magnet. In addition to the above-mentioned mechanism (8), a jack @ for correcting the bending of the pipe, a heater (13) for the distortion generating part, and a water sprinkler α◆ for cooling are provided.

As mentioned above, welding and strain relief have conventionally been performed using dedicated equipment, which requires time to transport and attach/detach the pipes, and it is extremely difficult and dangerous to reverse the pipes during welding, so a crane is required. In addition, the strain relief work requires heating and cooling operations, which is always dangerous.

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional art, and provides an apparatus that is equipped with a mechanism that can apply rotation for performing welding and pressurization for eliminating distortion while holding the main pipe. An embodiment of the present invention shown in FIGS. 5 to 10 will be described below.

In other words, this invention consists of a driving side support mechanism (to) mounted and fixed on one end of the 0 fathom bed, a driven side support mechanism αη that moves along a rail (16K) laid on the bed aa, and the above-mentioned surface support mechanism. Between mechanism (to) 99 and above rail αG
It consists of a pressurizing mechanism (to) that moves along the

By the way, in the drive side support mechanism 4, M is a drive shaft rotatably supported by a bearing (2) fixed on the bed 04, and a stepped shaft (B) is integrally provided at the inner end of the drive shaft. , it is possible to install and support a plurality of main pipes (1) of different sizes. (4)■゛(Foundation) is a bottle that fits into the hole of the flange (2) of the main pipe (1) and transmits rotational torque.
It is arranged vertically, and when not in use, it is designed to be stored using a groove and a hole provided in a portion of the corrugated shaft portion C21. (E) is a drive mechanism that transmits rotation to the drive shaft QQ, which includes a motor (A), a transmission (2), a sprocket blade,
It is derived from Cheno 01D. Note that (A) is a torque limiter which, when an external force acts on the main pipe (1) during rotation, causes the sprocket (2) to idle, thereby protecting the equipment.

The support mechanism ση on the driven side is such that the driven shaft (7) is rotatably supported by a bearing installed upright on the traveling truck, and the driven shaft (7) is supported at the inner end by a bearing installed on the drive shaft Q. A step shaft portion (to) with the same diameter and the same number as the step shaft portion is provided. This main pipe support mechanism 0 changes its position according to the length of the main pipe (1), and is firmly attached to the support mechanism Q5 on the driving side to completely support the main pipe [1]. A handle tightening tool (b) is provided to hold the handle in place.

The pressurizing mechanism (to) includes a traveling carriage (to), a hydraulic cylinder vertically supported at the center of its upper part via a support member (a), and a pressurizing mechanism that moves up and down by the movement of the rod of this hydraulic cylinder 9Q in and out. It is disconnected from the pressure clamper (roller). By the way, the pressure clamper (9) is equipped with second and eighth clamp holes (b) which are fitted onto the first clamper which is directly connected to the rond end, and which are used by fitting onto the main pipe (1).
) is used as appropriate depending on the diameter of the In addition, (a) in the figure shows the detent shaft of the pressure clamper (9), (4)
Q is a buffer support mechanism for the traveling bogie (7), and as shown in Fig. 8, the bearings supporting the wheels O'h are elastically The distance between the supporting body and the truck body can be changed using the axle as a guide. Therefore, when pushing up the pressurizing clamper to straighten the bend in the main pipe fl), the reaction force causes the main body of the truck to descend a little and come into contact with the upper surface of the rail Q19, and the reaction force acts on the wheel 17). It is prevented. Note that FIGS. 9 and 10 show the single structure of the pressure clamper (9), and in the figures, 611 is a bin for determining the position of each clamper.

Also, the eel is carbon for grounding during welding, and the main pipe support mechanism on the drive side q! 9 is connected to the appropriate place, and the ground wire) is led out from this. (B) is a hydraulic pump for pressurization, HA is a pendant switch for operation, HO is a hydraulic hose, and 6η is an operation panel that operates the motor (A).

The present invention has a structure as described above with respect to its embodiments, and when it is used, firstly, preparations are made so that a bottle or (roller) that fits the flange (2) of the main pipe (1) can be used, and then a crane is installed. Suspend the main pipe (1) at the
Insert the bottle into the hole. Then, move the support mechanism αη on the driven side, which has been retreated in advance, and insert the stepped shaft part (7) into the other end of the main pipe (1), and tighten the handle by operating the tool (b) to tighten the mechanism. αη is fixed to the rail αG′. Next, start the motor to rotate the branch pipe (8) temporarily attached to the main pipe [1] to an angle that allows welding in a downward position, and move the pressure mechanism to prevent welding distortion to the appropriate position. At this point, the hydraulic cylinder 11) is activated to push up the pressurizing clamper, and the main pipe 11) is pressurized and welding is performed in a state where a reverse strain is applied.

After half-circumferential welding of the branch pipe] 3), the main pipe is again rotated by an appropriate angle, and welding is performed while applying a reverse strain using the pressure clamper (2) as before. If distortion still occurs after welding is completed in this way, the distortion can be removed by repeating the rotation of the main pipe (1) and the operation of the pressure clamper (6). After removing the strain, measure and inspect the level of each flange (4) using thread 0.

In addition, although the case of welding and strain relief of connecting pipes was described in the example, it can be used as a device for other workpieces by changing the structure of the stepped shaft part of the drive shaft and driven shaft and the pressurizing clamper. Of course, if the reduction ratio of the speed gear is set to the welding speed, it is also possible to continuously weld, for example, the main pipe and the flange.

As described above, according to the present invention, the main pipe, etc. is rotatably held from both ends, and is equipped with a mechanism for rotationally driving this and a pressurizing mechanism, and welding and strain relief can be performed without changing the work setup. It is done easily and safely.

[Brief explanation of the drawing]

Figure 4 is a front view of a conventional welding holding device, Figure 2 is its side Ifi view, Figure 8 is a front view of a conventional strain relief device, and Figure 4 is a front view of a conventional welding holding device.
The figure is a side view, FIG. 5 is a plan view of the entire device showing one embodiment of the present invention, FIG. 6 is a partially sectional front view, and FIG. 7 is a longitudinal section of the pressurizing mechanism. 8 is an enlarged tfj view of the buffer support mechanism in FIG. 7, FIG. 9 is a front view of the pressure clamper, and FIG. 10 is a side view of the same. In the figure, Q4 is the bed, 0 o'clock is the support mechanism on the drive side,
tte is a rail, CIη is a supporting mechanism on the driven side, and (g) is a pressurizing mechanism. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa

Claims (1)

[Claims] A drive-side support mechanism that is mounted and fixed on one end of the bed and includes a drive mechanism and a drive shaft; a driven-side support mechanism that supports a driven shaft on a trolley that moves along a rail on the bed;
A workpiece rotation holding and pressurizing device comprising a pressurizing mechanism that is located between the surface support mechanisms and includes a truck that moves along a rail, a hydraulic cylinder, and a pressurizing clamper.