SU642041A1 - Apparatus for straightening welded plates by tensioning - Google Patents

Description

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The invention relates to the processing of metals by pressure, in particular to devices for dressing.

A device for dressing is known, which contains front and rear clamping cookers located on the base of the drive from the drive and with locking mechanisms l.

QjHfiKO known device provides a relatively low quality straightening of possible cracks and ruptures along the weld seam and does not provide an opportunity to edit on it plates with stiffeners along the entire perimeter.

The purpose of the invention is to improve the quality of the straightening and ensure the straightening of slabs with stiffeners along the entire perimeter.

For this, the device is equipped with a lifting platform mounted on the frame with a mechanism for moving it in a plane, perpendicular to the straightening axis, and a frame mounted on it, made in the form of the upper and lower parts, connected by clamps, and a vibrator located in the upper part of the frame, and mounted The frame is not moved by mechanisms of movement in a direction parallel to the axis of the straightening of the rear clamping {head and lifting platform, while the upper honor of the frame is provided with clips for fastening the straightened welded splices to it.

FIG. 1 shows the device, general view; 2 - enlarged view of the node I on g, 1; in fig. 3 is a section A-A in FIG. 2; in fig. 4 - view B of FIG. 3

On the frame frame 1, the front 2 and rear 3 clamps are installed; the heads with gripping mechanisms in which the machined plate 4 is attached. The front clamping head 2 moves through lever transmission 5 by means of a power cylinder 6. On a lifting platform 7 a frame 8 is installed, consisting of two parts of the upper 9 and lower Yu, K of the upper part of the 9 frame attached vibrator 11 and clamps 12, having the ability to rotate on the axis 13, To the lower part of the frame 1O attached on the axis x 14 of the clamps 15, and it is located loose laziness using fix The ditch 16 on the platform 7, rigidly connected to the power cylinder 17. For longitudinal movement of the rear clamping head 3 and the lifting platform 7, when readjusting to another size of the pile, as well as for transporting the processed plate 4 to the storage location, on the base 1, the power cylinder 18 has been installed screw 19 , elektrotal 2O and monorail 21. The device operates as follows. The plate 4 being processed, which is located at the storage site, attached 12 to the upper part 9 of the frame 8, is then transported by an electric hoist 2 O along the monorail 21 to the place where it is lowered and then clamped in the gripping mechanisms of the front 2 and rear 3 clamping heads . At the end of the clamp, the livdra 17 and the platform 7 lift the lower part 1O of the frame 8 up to touch the plate 4. At the same time, the actuators 16 center the position of the lower part 1O of the frame B relative to the lifting platform 7. Then turn the clamps 15 and squeeze between the upper 9 and lower 10 parts of the frame 8, thereby creating a strong attachment of the frame 8 to the plate 4. After attaching the plate 4 to the frame 8, lower the hydraulic cylinder 17 to the lifting platform 7 together with the retainer 16 and then turn on the power cylinder 6 and stretch the plate 4 to ex. 5O-60% of yield strength. Simultaneously with the stretching, the plates 4 turn on the vibrator 11 and create vibration loads close to the resonant frequency. Simultaneous stretching and vibrating of the plate 4 ensures its high quality correction. At the end of the processing, the plates 4 turn off the vibrator 11 and the power cylinder 6, lift the lifting platform 7 with the help of hydrocyles 17 together with the latches-16, loosen and push the clamps 15 to the side, lower the lifting platform 7 together with the bottom of the frame 8, detach The plate 4 1 from the front 2 and rear 3 clamping heads and the electric hoist 2O together with the upper part 9 of the frame 8 and the vibrator 11 lift the plate upwards. Then, the straightened plate 4 along the monorail 21 by electric hoist 20 is transported to the storage place and disconnected there from the upper part 9 of the frame 8 by rotating the clamps 12 relative to their axes 13. When aligning the plates 4 of another size, the rear clamping head 3 is screwed The cylinder 17 is moved with the help of the power cylinder 18 relative to the base to the position that secures the plate 4 in the gripping mechanisms of the front 2 and rear 3 clamping heads, as well as the vibrator 11 in the middle of the span between the clamping heads. The design of the device provides high-quality editing plates with stiffeners around the perimeter. 1. An apparatus for straightening welded plates with a stretch containing front and rear movable drive heads with gripping mechanisms located on a frame, characterized in that, in order to improve the quality of straightening and ensure straightening of plates with stiffeners along the entire perimeter, equipped with a lifting platform mounted on the frame with a mechanism for moving it in a plane, perpendicular to the straightening axis, and a frame mounted on it, made in the form of the upper and lower parts connected with clamps, and the same vibrator, located on the upper part of the frame, and mounted on the frame by movement mechanisms in a direction parallel to the axis of the straightening of the rear clamping head and the lifting platform. 2. The device according to claim 1, wherein the upper part of the frame is provided with clips for fastening straightened welded plates to it. Sources of information taken into account during the examination: 1. Copyright certificate № 422497, В 21 D 3/12, 1972 ..

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