RU222128U1 - Clamp for dismantling the tap DN50 - Google Patents

Abstract

The utility model relates to hand tools in the field of mechanization of assembly processes and can be used for partial, complete dismantling and reassembly of pipeline fittings (Du50 taps) of candle pipelines, for example, gas air cooling units or dust collectors.

The technical result of using the proposed utility model is to simplify the dismantling of the DN50 crane.

The specified technical result from the use of the utility model is achieved by the fact that the clamp for dismantling a DN50 tap consists of four brackets, each of which is made of two rectangular plates with a pipe segment welded between them vertically located outward and has a cutout for the flange on the inside, while on On the inner surface of the rear brackets, two bushings with bolts and press washers are welded on each side of the pipe segment, the front brackets have threaded through holes located in accordance with the bolts of the rear brackets and loops on one side connecting the loops of the rear brackets, and the rear brackets are interconnected from the right and left edges with studs inserted into bushings welded to the inner surface of the rear brackets, and washers with nuts are installed on the studs.

Description

The utility model relates to hand tools in the field of mechanization of assembly processes and can be used for partial, complete dismantling and reassembly of pipeline fittings (Du50 taps) of candle pipelines, for example, gas air cooling units or dust collectors.

Currently, dismantling of cranes for maintenance and replacement of seals is carried out using lifting equipment to remove and install the spark plug pipeline located above the crane. This significantly complicates the work and increases its duration. Therefore, the problem of simplifying the dismantling of cranes is relevant.

There is a known analogue of the device “Device for centering flanges along holes” (Patent No. 119278 published on August 20, 2012), containing an assembly plug placed during centering in the hole of the base flange, additionally containing a stopper that limits the axial movement of the assembly plug in the hole of the base flange, made in in the form of a plate with an open slot that grips the assembly plug along the groove made in it. The disadvantages of the known device are the difficulty of use due to the need to use an assembly plug with a stopper to transfer the axial load from the weight of the plug and the impact of the centered flange on the base flange.

The “Clamp” device (Patent No. 2658182 published on June 19, 2018) is partially free from this drawback, where the clamping mechanism consists of four bolts secured with nuts in the holes of perforated profiles, the disadvantages of which are the inability to fix the flanges in the unclamped state.

Also known is the device closest to the proposed utility model, taken as the closest analogue of the “Positioning device for assembly equipment” (Patent No. 2684876 published on April 15, 2019), the clamp of which is made in the form of an elongated bracket with a collapsible clamping element, with an angle and a clamp fastened together by fastening elements with the ability to move in the longitudinal direction. The disadvantages of this device are the difficulty of dismantling and the inability to fix the flanges in the open state when exposed to significant axial loads.

A common disadvantage of the known devices is the difficulty of dismantling due to the complexity of the design associated with the wide functionality.

As a result of the information search, the closest analogue was not selected.

The technical problem solved by the proposed utility model is the creation of a clamp for dismantling a DN50 tap.

The technical result of using the proposed utility model is to simplify the dismantling of the DN50 crane.

The specified technical result from the use of the utility model is achieved by the fact that the clamp for dismantling a DN50 tap consists of four brackets, each of which is made of two rectangular plates with a pipe segment welded between them vertically located outward and has a cutout for the flange on the inside, while on On the inner surface of the rear brackets, two bushings with bolts and press washers are welded on each side of the pipe segment, the front brackets have threaded through holes located in accordance with the bolts of the rear brackets and loops on one side connecting the loops of the rear brackets, and the rear brackets are interconnected from the right and left edges with studs inserted into bushings welded to the inner surface of the rear brackets, and washers with nuts are installed on the studs.

The proposed utility model is illustrated by the following figures.

In fig. 1 shows a clamp for dismantling a DN50 tap.

In fig. Figure 2 shows an example of installing a clamp and its use for dismantling a DN50 valve of a spark plug pipeline.

Clamp for dismantling a DN50 tap (Fig. 1), consists of a rear upper bracket (1), a front upper bracket (2), a rear lower bracket (3), a front lower bracket (4), made from sheet metal plates with a thickness of 3-7 mm, 250-320 mm long and 120-160 mm wide with grooves 30-45 mm wide and 20-30 mm long, made according to a template corresponding to the profile of the pipe with a flange on which the clamp will be installed. In the middle part of the brackets (1-4) pipe segments (5-8) with a diameter of 55-70 mm and a length of 20-50 mm are welded. At a distance of 15-30 mm from the edge of the pipe segment (5-7), holes (27-34) with a diameter of 10-14 mm are drilled in the brackets (1-4). Any hinges (9,10) are welded to the brackets (1-4), bushings (11-14) 8-12 mm long and 10-14 mm in diameter are welded to the surface of the rear upper bracket (1), bushings (15-18), 8-12 mm long and 10-14 mm in diameter, welded to the rear bottom bracket (3). Bolts with press washers (19-26), for example, M8-M12 with a length of 40-80 mm, are welded with their press washers to the bushings (11-18). Threads corresponding to bolts (19-26) are cut into holes (27-34) in brackets (2,4). On both sides of the bracket (3), parallel to the outer edge, bushings (35.36) made of a metal pipe with a diameter of 12-15 mm and a length of 60-80 mm are welded. A pin (37), for example, Ml 2-M 14 with a length of 180-200 mm, is fixed in the sleeve (35) by welding. A corresponding nut (38) with a washer (39) is installed on the stud (37). In the sleeve (36) a pin (40), for example, M12-M14 with a length of 180-200 mm, is fixed by welding. A corresponding nut (41) with a washer (42) is installed on the stud (40). On both sides of the bracket (1), parallel to the outer edge, bushings (43.44) made of a metal pipe with a diameter of 12-15 mm and a length of 60-80 mm are welded.

The clamp for dismantling a DN50 tap works as follows (Fig. 1, 2)

At the first stage, a rear upper bracket (1) and a rear lower bracket (3) are installed on the lower flange (45) and upper flange (46) of the pipeline (47,48) with a DN50 tap (49), closing the loops (9,10) front upper bracket (2) and front lower bracket (4), align pipe segments (5-8) with pipelines, and holes (27-34) align with bushings (11-18). The bolts (19-26) are tightened in the threads of the aligned holes (27-34) in the brackets (2.4). Then the nuts (38, 41) are uniformly rotated on the studs (37,40) installed in the bushings (35,36), and the axial force is transmitted through the washers (39,42) to the bushings (43,44). As a result, the brackets (1-4) are moved apart to the distance required for dismantling the crane.

At the second stage, after installing the tap (49), the clamp is dismantled as follows: evenly unscrew the nuts (38,41) on the studs (37,40). The brackets (1-4) are moved towards each other until the flanges contact the valve body (49). Then unscrew the bolts (19-26) and remove the brackets (1-4) from the flanges (45,46) of the pipeline.

The proposed utility model makes it possible to simplify the dismantling of the DN50 tap without removing the spark plug pipeline. The device's brackets allow you to fix the flanges before disassembling the unit and leave their relative position unchanged. Studs with nuts installed on both sides of the brackets allow the flanges to be moved apart. Thus, the problem of the utility model is solved.

Claims (1)

Clamp for dismantling a DN50 tap, consisting of four brackets, each of which is made of two rectangular plates with a pipe segment vertically located outwardly welded between them and has a cutout for a flange on the inside, while on the inner surface of the rear brackets on each side of the pipe segment there is welded two bushings each with bolts and press washers, the front brackets have threaded through holes located corresponding to the bolts of the rear brackets and loops on one side connecting the loops of the rear brackets, and the rear brackets are connected to each other at the right and left edges by pins inserted into the bushings , welded to the inner surface of the rear brackets, and washers with nuts are installed on the studs.