BG696Y1 - Device for boring in situ of holes in front mirrors of large-sized drums - Google Patents

Abstract

The device can find application in industry, in particular in repair works of the drying drums for coal in the briquette production. It enables the works to be made in situ without any dismantling, and by it an unlimited number of holes can be treated on the front mirrors of the drums of unlimited diameters and lengths including the attainment of the required precision and smoothness prescribed in the technical documentation. The device comprises a revolving cutting tool (2) fitted to a spindle (3), receiving rotative movement from the driving mechanism (13) and nut (15), and mounted on a frame (9), comprising of cheeks (16 and 18) with adjustable bolts (7) and prismatic bodies (10 and 19). Frame (9) is mounted in a mobile manner on a supporting column, fixed into a hole of the front mirror (1) and comprising of body (4) fitted radially to the hole by means of wedges (6), axle (5) and nut (12), and axially fitted by means of nuts (8 and 11). Spindle (3) is resting on roller bearings (14) in cylinder (20), guided by means of a key (17) in the prismatic body (19) of frame (9), aligned to the front mirror of the drum by means of bolts (7).

Description

Technical field

The utility model relates to a device for scraping openings in the front mirrors of large-sized drums, which can be used in industry, and in particular for the repair of coal drying drums in the briquette industry.

BACKGROUND OF THE INVENTION

When it is necessary to repair openings in the front mirrors of large drums, there are certain difficulties with regard to their transfer in factory conditions, so it is preferable to have them repaired on site without dismantling.

SU 168581 A large-size machining device is known, including a central axis passing through a drum and mounted on two bearing bodies. Two disks are mounted on the axle and a cutting tool support on them, which, through two gear reducers, moves around the circumference and axially feeds to open the holes. The radial displacement of the caliper is done manually with a separate drive screw.

With the device, it is possible to tear a hole centrally located on the work bar assembled in the cavity of the empty drum. It is not technically possible to handle small diameter openings located on the front mirrors of a drum filled with a non-removable tube package with such a device. In addition, the device is very expensive and labor-intensive to make and requires a drum without a shaft or hollow shaft.

The technical nature of the utility model

The object of the utility model is to provide a device for scraping openings in the front mirrors of large-sized non-removable drums with a non-removable axle, which is small, easy to carry and does not install, and allows the processing of an unlimited number of openings in the front mirrors of drums with unlimited diameter and length.

The task was accomplished by creating a device for scraping openings in openings in the front mirrors of oversized drums, including a rotary cutting tool moved along the machining opening. According to the utility model, the cutting tool is attached to a spindle receiving rotary and reciprocating motion from the actuator and a nut and mounted on a frame consisting of pages with adjusting bolts and prismatic bodies. The frame is mounted removably on a support column fixed in the opening of the front mirror and consisting of a body fixed radially to the opening by means of wedges, a shaft and a nut and axially secured by nuts. The spindle is mounted by rolling bearings in a cylinder driven by a key in the prism body of the frame centered in the front mirror of the drum by means of screws.

The advantages of the utility model are that it is possible to recover by tearing openings in the mirrors of oversized drums without the need for a central axis of the equipment, and the holes in the front mirrors of the drums, regardless of their number, length and diameter of the drum. The device is relatively lightweight and can be installed and serviced by one worker. In addition, with a single installation it is possible to cover and process several openings. Fast and accurate alignment required to align the holes with the axis of the drum and the accuracy and smoothness of the torn hole prescribed in the technical documentation are provided. The device features low power consumption, safety and cleanliness at low noise.

Explanation of the annexed figures

An exemplary embodiment of the device for scraping openings in holes in the front mirrors of drums is shown in the accompanying figures, of which:

Figure 1 is an overview of the forthcoming drum;

FIG. 2 is a complete sectional view of the device mounted on the front mirror of the drum and ready to shred an opening; FIG.

3 is a cross-sectional view along the AB of FIG. 2; 5 is a C view of FIG. 2.

An example of a utility model

The device for scraping openings in the front mirrors of oversized drums includes a rotary cutting tool 2, which is moved along the treated opening. The cutting tool 2 is attached to a spindle 3 receiving rotary and reciprocating motion from a drive mechanism 13 and a nut 15 and mounted on a frame 9 consisting of pages 16 and 18 with adjusting bolts 7 and prismatic bodies 10 and 19. The frame 9 is movably mounted on a support column fixed in the opening of the front mirror 1 and consisting of a body 4, radially secured to the opening by means of wedges 6, axis 5 and nut 12 and axially secured by nuts 8 and 11. The spindle 3 is supported by rolling bearings 14 in a cylinder 20, guided by a key 17 in the prism body 19 of the frame 9, centered in the front mirror of the drum by means of screws 7.

Using the utility model

In one of the openings adjacent to the workpieces, the main support column is mounted, the body 4 being pressed radially to the opening by means of the wedges 6, the axis 5 and the nut 12 and fixed axially by the nut 8. The frame 9 is mounted on the stationary main column thus stationed. consisting of pages 16 and 18 and the adjusting bolts 7 together with the prismatic bodies 10 and 19, the frame 9 being fixed to the body 4 by a nut 11 and centered in the front mirror by means of the bolts 7. A cylinder 20 is mounted in the prism body 19 and key 17 in which by means of both rolling and bearing 14 bear the working spindle 3 carrying the cutting tool 2 and actuated by a drive mechanism 13. The opening of the opening is made by the cutting tool 2 by rotating the spindle 3 and the progressive movement of the cylinder 20 by a nut 15 together with the spindle 3. By repeated radial displacement. cutting tool 2 achieves the prescribed hole size. By unscrewing by means of the nut 11 and the bolts 7 and removing the spindle 3 from the range of the opening in the front mirror 1, the frame 9 with the working spindle 3 can be rotated about the body 4 of the supporting column and adjusted in the manner described above. to another opening within range of the device.

Claims (1)

Claims 1. A device for scraping openings in the front mirrors of oversized drums, including a rotary cutting tool, moved along the machining opening, characterized in that the cutting tool (2) is attached to a spindle (3) receiving rotatably and a progressive movement of the actuator (13) and nut (15) and mounted on a frame (9), consisting of pages (16 and 18) with adjusting bolts (7) and prismatic bodies (10 and 19), wherein the frame ( 9) is mounted movably on a support column fixed in the opening of the front mirror (1) consisting of a body (4) fixed radially to the opening by means of wedges (6), a shaft (5) and a nut (12) and axially secured by nuts (8 and 11), and the spindle (3) is supported by rolling bearings (14 ) into a cylinder (20) driven by a key (17) in the prism body (19) of the frame (9) centered in the front mirror of the drum by means of screws (7).