SU1375430A1 - Stand for rotating articles - Google Patents

Abstract

The invention relates to repair equipment, mainly for the repair of centralizers of electric pipe welders. The aim of the invention is to improve the performance and quality of repairs. Expansion of the functions of the stand is achieved by increasing the accuracy of product scrutiny and alignment of the relative position of the elements, parts and assemblies of the centralizer with respect to the axis of its rotation. The tailstock is rotatably rotatable by the hydraulic cylinder through 90 ° in the vertical plane, which reduces the time and improves the quality of assembly, disassembly and adjustment of parts and assemblies inside the centralizer housing. At the stand, disassembly, assembly of parts and assemblies, surfacing of worn working surfaces of clamping shoes and subsequent machining with chisels, as well as checking the relative position of elements, parts and assemblies and their subsequent adjustment are performed. 2 Il.

Description

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The invention relates to the field of repair, and more specifically to equipment for the maintenance and repair of welding units.

The aim of the invention is an increase in productivity and better inspection and repair of centralizers of electric pipe welding units on one universal stand with less manual labor and without using a bridge crane.

FIG. 1 shows a stand for rotating a centralizer during repair, a general view; in fig. 2 - the same, top view.

The stand for rotating articles contains a frame 1, which in the area of product placement, for example, centralizer 2, has a U-shaped cross-section with side posts 3 and 4. On the base 1 it is axially displaceable from drive 5 (for example, screw) A frame 6 is installed, on which in the rolling bearings 7 a faceplate 8 is mounted with its rotational drive 9. On the other side of the frame 1 with the help of pins 10 and sliding bearings 11, the back headstock 12 is installed, the body 13 of which is pivotally connected through the lever 14 to the hydraulic cylinder rod 15. The latter is mounted on the base 1 by means of pins 16 and bearings 17. A beam 18 is installed on the rack 3 with the reference plane 19 parallel to the axis of rotation of the drive plate 8. On the stand 4 there is mounted a cutting head 20 with a drive 21 axially displaced. In the area where the centralizer 2 is located on the bed 1 in the plane perpendicular to its longitudinal axis, wedge prisms with screw mechanisms are installed. For the convenience of inspection and repair of the centralizer 2, the stand has a service platform 22, which, for safety, is rigidly connected with a beam 23 to the frame 1. The centralizer 2 is mounted on the faceplate 8 and the tailstock 12 using bolts 24, pins 25 and provided for the centralizer 2 reference ska 26.

The stand works as follows.

In the initial position, the frame 6 is retracted to the leftmost position by means of the actuator 5, and the axis of the tailstock 12 is horizontal and coincides with the axis of rotation of the faceplate 8. The centralizer 2 is inserted into the hole of the tailstock 12 with the right-hand crane (not shown). and with its supporting cylindrical surfaces on wedge prisms. Next, using the drive 5, the frame 6 with the faceplate 8 is moved to the right until it stops at the end of the centralizer 2. If the axis of the opening of the faceplate 8 does not coincide with the axis of the centralizer 2,

then, using screw mechanisms, the necessary raising or lowering of the centralizer 2 is carried out. Then, using bolts 24 and pins 25, the centralizer 2 is rigidly fastened both with the plate 8 and with the back headstock 12. The centralizer is ready for inspection, disassembly and subsequent assembly parts and assemblies located outside the centralizer 2. If necessary, using the actuator 9, the required rotation of the centralizer 2 around the axis is carried out. Using the base plane 19 of the beam 18, the radial runout of the working cylindrical surfaces A of the clamping baskets and other elements of the centralizer 2 can be checked and their exhibition with a high degree of accuracy can be made. If the working surfaces A are significantly worn, they can be directed and then machined using a cutting head 20. To dismantle (and install) hydraulic cylinders and other elements placed inside the case of centralizer 2, its left edge is freed from bolts 24 and pins 25, face plate 8 is retracted to the left. In the rod end of the hydraulic cylinder 15

 from the hydraulic system of the device (not shown), the working fluid is supplied under pressure. The centralizer 2, secured by its right-hand side in the tailstock 12, rotates with it by 90 ° in the vertical ri: ioc- bone. However, in this case, inspection, disassembly and assembly of parts and components located inside centralizer 2 is carried out from the service platform. To return the centralizer 2 to the horizontal position of the rod of the hydraulic cylinder 15, it is connected to the drain, and the working pressure is applied to the piston.

The proposed stand makes it possible to improve the quality and productivity of the repair of centralizers of pipe electric welding equipment.

Claims (1)

Invention Formula A stand for rotating articles, mainly in the repair of a centralizer, containing a frame, an iaibu plan and a turntable drive in a vertical plane, characterized in that, in order to improve the performance and quality of repairs, the stand is equipped with a drive cutting head and a bar with a base surface parallel to the axis rotation of the faceplate, while the faceplate is installed on the frame with the possibility of moving along the axis of rotation, the frame in the area of the product is made U-shaped, and the cutting head and the beam are placed on opposite side housing posts. H :. tr: 3 CTl