Opening aligning tool for small-gap tube row

Abstract

The utility model discloses an aligning tool for a small-gap pipe row, which comprises a pipeline to be aligned and is characterized by comprising a screw rod, square steel, a semi-arc groove, a steel wire rope and angle steel, the screw rod penetrates through the square steel and is in threaded fit with the square steel, the upper end of the screw rod is connected with a driving structure, and the lower end of the screw rod is connected with the angle steel. The square steel is further connected with a steel wire rope, the steel wire rope forms two U-shaped structures below the square steel, the angle steel penetrates through the two U-shaped structures formed by the steel wire rope, the to-be-aligned pipeline penetrates through the two U-shaped structures respectively, and the upper portion of the to-be-aligned pipeline is tightly attached to the lower portion of the angle steel and tightly attached to the steel wire rope. And the instability of manual alignment of operators is overcome, and the phenomena of misalignment and folding caused by manual alignment are completely eradicated. The special tool is low in manufacturing cost and flexible in use, and the special tool can be used for completing opening alignment work for the distance larger than 6 mm between the pipelines. The problem that no tool can be used when the pipe row gap in the boiler is small is solved.

Description

Technical Field

[0001] The utility model relates to a matching tool, in particular to a matching tool for small-gap pipe rows. Background Art

[0002] The existing thermal power unit boiler has a small gap in the internal superheater tube row and insufficient space. As a result, the weld joints often have misalignment and discounts during the tube row maintenance and replacement welding process. It cannot meet the quality requirements of the welding process. The existing matching tools on the market are relatively large in size and are only used for positions with large spaces for single pipes. They cannot be used in the case of small gaps on the heating surface tube rows. The use of matching calipers requires that the tube row gap or the pipe periphery must be more than 40mm before it can be used. It cannot be used when the gap between the tube rows on the heating surface of the boiler is only 10mm. The matching pliers use the lever principle to connect the pliers on both sides through an axle pin, and the gap at the axle pin connection will directly affect the misalignment of the pipe weld. The excessive axle pin gap leads to an increase in the misalignment of the matching, and the too small gap affects the flexible use of the matching pliers. In summary, the matching pliers cannot meet the matching welding maintenance work during the maintenance and replacement of the small gap tube row on the heating surface of the boiler. Utility Model Content

[0003] The utility model aims to provide a tool for matching small-gap tube banks, so as to solve the shortcomings of the prior art that the gaps between the superheater tube banks in the boiler are small and the space is insufficient, resulting in the inability to effectively match the tube banks.

[0004] The utility model is implemented by adopting the following technical scheme: a docking tool for small-gap pipe rows, including pipes to be docked, characterized in that it includes a screw rod, square steel, a semicircular arc groove, a wire rope, and an angle steel, the screw rod passes through the square steel and cooperates with the square steel thread, the upper end of the screw rod is connected to a driving structure, the lower end of the screw rod is connected to an angle steel, and the square steel is also connected to a wire rope, the wire rope forms two U-shaped structures below the square steel, the angle steel passes through the two U-shaped structures formed by the wire rope, the pipes to be docked pass through the two U-shaped structures respectively, and the upper part of the pipes to be docked is close to the lower part of the angle steel and close to the wire rope.

[0005] Furthermore, the driving structure connected to the upper end of the screw rod comprises a fixed sleeve and a ratchet wrench, the fixed sleeve is fixed to the upper end of the screw rod, and the ratchet wrench cooperates with the fixed sleeve.

[0006] Furthermore, the angle steel is installed in a direction with one side at a right angle facing downward, and the upper side is connected to the lower end of the screw rod through a bearing.

[0007] Furthermore, the bearing is a thrust bearing.

[0008] Furthermore, both ends of the steel wire rope are fixedly connected to the square steel through a steel wire rope lock.

[0009] Furthermore, a semi-circular arc groove is provided on one side of the square steel, and the steel wire rope is hung on the semi-circular arc groove, so that two U-shaped structures are formed below the square steel when the steel wire rope droops naturally.

[0010] Furthermore, a tube through hole is opened in the center of the square steel, a nut is welded in the hole, and the screw rod is threadedly matched with the nut on the square steel.

[0011] The utility model discloses a tool for matching pipes with small gaps, and its beneficial effects include: effectively improving the quality of pipe matching, enhancing work efficiency, and saving time. It overcomes the instability of manual matching by operators, and eliminates the occurrence of misalignment and folding of the edges that occur in manual matching. It has low production cost and flexibility in use. For pipes with a spacing greater than 6 mm, this special tool can be used to complete the matching work. It solves the problem that there are no tools available for matching when the gap between pipes inside the boiler is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0013] Figure 1 A schematic diagram of a docking tool for small gap tube rows;

[0014] Figure 2 This is a schematic diagram of one side of the semicircular arc groove of the square steel;

[0015] Figure 3 It is a lateral schematic diagram of a butt-jointing tool used for a pipe row with a small gap during butt-jointing operation;

[0016] In the figure, 1-ratchet wrench, 2-fixed sleeve, 3-screw rod, 4-square steel, 5-semicircular arc groove, 6-wire rope, 7-wire rope lock, 8-bearing, 9-angle steel, 10-pipe to be matched. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 As shown, a tool for matching small gap pipe rows includes a ratchet wrench 1, a fixed sleeve 2, a screw rod 3, a square steel 4, a semicircular arc groove 5, a wire rope 6, a wire rope lock 7, a bearing 8, and an angle steel 9. The square steel 4 is provided with a threaded hole, and the screw rod 3 passes through the threaded hole on the square steel 4. The upper end of the screw rod 3 is fixedly connected with a fixed sleeve 2, and the fixed sleeve 2 cooperates with the ratchet wrench 1. The screw rod 3 is rotated by the ratchet wrench 1, and then the screw rod 3 is relatively moved with the square steel 4 in the axial direction. The lower end of the screw rod 3 is connected to the angle steel 9 through the bearing 8, and the right-angled side of the angle steel 9 is downward, so that when the angle steel 9 is close to the pipe 10 to be matched, the angle steel 9 will not rotate with the screw rod 3, and at the same time, the two right-angled sides of the angle steel 9 can ensure that the two pipes 10 to be matched are coaxial, avoiding the occurrence of misalignment and stop.

[0020] Two wire rope locks 7 are arranged on the square steel 4, and both ends of the wire rope 6 are fixedly connected to the two wire rope locks 7 respectively. A semicircular arc groove 5 is arranged on one side of the square steel 4, and the wire rope 6 is hung on the semicircular arc groove 5 so that two U-shaped structures are formed when the wire rope 6 droops naturally. The angle steel 9 passes through the two U-shaped structures formed by the wire rope 6.

[0021] When the docking operation is required, the two pipes 10 to be docked are respectively passed through the two U-shaped structures formed by the steel wire rope 6, and then the ratchet wrench 1 is operated to move the angle steel 9 downward, and the steel wire rope 6 provides an upward reaction force to the pipes 10 to be docked, so that the angle steel 9 is close to the pipes 10 to be docked, ensuring that the two pipes 10 to be docked are coaxial. Since the diameter of the steel wire rope 6 is small, it can adapt to the situation where the spacing between the pipes is small, solving the problem of no tools available for docking when the gap between the pipes inside the boiler is small.

[0022] The above embodiments describe the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the changes and modifications made by the technicians in this field shall be within the scope of protection of the claims attached to the utility model.

Claims

1. A tool for matching small gap pipe banks, comprising a pipe to be matched (10), characterized in that: The invention comprises a screw rod (3), a square steel (4), a semicircular arc groove (5), a steel wire rope (6), and an angle steel (9). The screw rod (3) passes through the square steel (4) and is threadedly matched with the square steel (4). The upper end of the screw rod (3) is connected to a driving structure. The lower end of the screw rod (3) is connected to the angle steel (9). The square steel (4) is also connected to a steel wire rope (6). The steel wire rope (6) forms two U-shaped structures below the square steel (4). The angle steel (9) passes through the two U-shaped structures formed by the steel wire rope (6). The pipes to be matched (10) pass through the two U-shaped structures respectively, and the upper part of the pipes to be matched (10) is closely attached to the angle steel (9) and the lower part is closely attached to the steel wire rope (6).

2. A tool for matching small gap pipe rows according to claim 1, characterized in that: The driving structure connected to the upper end of the screw rod (3) comprises a fixed sleeve (2) and a ratchet wrench (1); the fixed sleeve (2) is fixed to the upper end of the screw rod (3); and the ratchet wrench (1) cooperates with the fixed sleeve (2).

3. The tool for matching small gap tube banks according to claim 1, characterized in that: The angle steel (9) is installed in a direction with one side at a right angle facing downwards, and the upper side is connected to the lower end of the screw rod (3) via a bearing (8).

4. A matching tool for small gap tube arrays according to claim 3, characterized in that: The bearing (8) is a thrust bearing.

5. The matching tool for small gap tube array according to claim 1, characterized in that: Both ends of the steel wire rope (6) are fixedly connected to the square steel (4) via steel wire rope locks (7).

6. A tool for matching small gap tube banks according to claim 5, characterized in that: A semicircular arc groove (5) is provided on one side of the square steel (4), and the steel wire rope (6) is hung on the semicircular arc groove (5), so that two U-shaped structures are formed below the square steel (4) when the steel wire rope (6) droops naturally.

7. The tool for matching small gap tube banks according to claim 1, characterized in that: The square steel (4) has a through hole at its center, a nut is welded in the hole, and the screw rod (3) is threadedly matched with the nut on the square steel (4).

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