Cylindrical workpiece circle setting tool

Abstract

The utility model discloses a cylindrical workpiece circle fixing tool which comprises a mandrel located in the center of a cylindrical workpiece, the outer wall of the mandrel is fixedly connected with a plurality of spokes, and the spokes are distributed in a central radial mode with the mandrel as the center. The outer ring piece is connected with at least 12 sliding sleeves in a sliding mode, the outer end of each sliding sleeve is fixedly connected with a threaded sleeve, a threaded rod is in threaded connection with the interior of each threaded sleeve, the tail end of each threaded rod is fixedly connected with a top plate, and the top plates abut against the inner wall of the cylindrical workpiece. According to the utility model, a sufficient number of supporting rods are adopted, and the position of each supporting rod can be adjusted, so that fulcrums can be flexibly selected according to the deformation part of the cylindrical workpiece, the roundness of the cylindrical workpiece is ensured, the installation of internal accessories of a tower is facilitated, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylindrical container manufacturing and relates to a cylindrical workpiece circle fixing tool. Background Art

[0002] In the petrochemical industry, towers are equipment used to perform physical processes such as separation or absorption, altering the composition of complex gas or liquid mixtures. These towers, also known as "tower equipment," have a large height-to-diameter ratio and are equipped with various internal and external accessories. For example, distillation towers and hydrolysis towers are large cylindrical structures. Internal accessories include trays, grids, baffles, and other partitions, which divide the tower interior into multiple layers. When welding these partitions, the clearance between the partitions and the tower inner wall is small, necessitating the maintenance of the tower's internal roundness for easy installation. Traditional construction methods utilize internal support mechanisms to maintain the inner roundness of cylindrical workpieces. For example, patent publication number CN219617076U, "Internal Support Device for Large Tank Production," presents several challenges: first, the limited number of support points supporting the inner wall of the cylindrical workpiece makes it difficult to ensure roundness; second, the position of each support point is fixed or its adjustment is limited, preventing flexible adjustment of the support position. This makes it difficult to maintain clearance between the cylinder wall and the partitions, making installation of these partitions difficult. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a cylindrical workpiece circular positioning tool, the purpose of which is to use a sufficient number of support rods, and the position of the support rods can be adjusted so that the support points can be flexibly selected according to the deformation parts of the cylindrical workpiece to ensure the roundness of the cylindrical workpiece, thereby facilitating the installation of accessories inside the tower and improving production efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A cylindrical workpiece circular positioning tool comprises a core shaft located at the center of the cylindrical workpiece, a plurality of spokes fixedly connected to the outer wall of the core shaft, and the plurality of spokes are distributed radially with the core shaft as the center; the outer ring member is slidably connected to at least 12 sliding sleeves, the outer end of each sliding sleeve is fixedly connected to a screw sleeve, a screw rod is threaded in the screw sleeve, and the end of the screw rod is fixedly connected to a top plate, which supports the inner wall of the cylindrical workpiece.

[0006] As a further optimization, the cross-section of the outer ring member is elliptical; the sleeve can be slidably mounted on the outer ring member, and a notch is provided corresponding to the spoke to avoid interference with the spoke when the sleeve slides; the screw sleeve is fixedly connected to the other end of the sleeve away from the notch.

[0007] As a further optimization, the outer ring member is provided with a plurality of circumferentially evenly distributed insertion holes; the sliding sleeve is provided with pin holes corresponding to the insertion holes, which are used to fix the sliding sleeve when the pin member passes through the pin holes and is inserted into the insertion hole.

[0008] As a further optimization, a handle ring is fixedly connected to the side wall of the screw near the top plate to drive the screw to rotate.

[0009] As a further optimization, a rubber pad is bonded to the outer end of the top plate.

[0010] The beneficial effects of the present invention are as follows: the present invention adopts a sufficient number of support rods, and the position of each support rod can be adjusted, so that the fulcrum can be flexibly selected according to the deformation position of the cylindrical workpiece to ensure the roundness of the cylindrical workpiece, thereby facilitating the installation of accessories inside the tower and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0012] Figure 2 This is a schematic diagram of a partial cross-sectional structure of a screw rod according to an embodiment of the present invention;

[0013] Figure 3 This is a structural diagram of an embodiment of the present invention when the sliding sleeves are unevenly distributed.

[0014] The correspondence between the technical features and the reference numerals in the figure is: core shaft 1; spoke 2; outer ring member 3; socket 31; sleeve 4; notch 41; pin hole 42; screw sleeve 5; screw 6; handle ring 61; top plate 7; rubber pad 71; cylindrical workpiece 8. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Example 1, please refer to Figure 1-3 The present invention provides a cylindrical workpiece circular positioning tool, which is used when installing partitions for dividing the tower into multiple layers, including a core shaft 1 located at the center of the cylindrical workpiece 8, and a plurality of spokes 2 are fixedly connected to the outer wall of the core shaft 1. In this embodiment, 8 spokes 2 are taken as an example. The plurality of spokes 2 are distributed radially with the core shaft 1 as the center, and the outer ends of the spokes 2 are fixedly connected to the inner side of the outer ring member 3; the outer ring member 3 is slidably connected to at least 12 sliding sleeves 4, and the outer end of each sliding sleeve 4 is fixedly connected to a screw sleeve 5, and a screw 6 is threadedly connected in the screw sleeve 5. The end of the screw 6 is fixedly connected to a top plate 7, and the top plate 7 supports the inner wall of the cylindrical workpiece 8.

[0017] To use, first rotate all screws 6 back and forth. Then, place the fixture inside the cylindrical workpiece 8. Select at least three screws 6 and rotate them out until the top plate 7 pushes against the cylindrical wall, pre-fixing the fixture. Next, place the partition plate inside the cylindrical workpiece 8. Since the partition plate itself is circular, it can be used as a tool to measure roundness. A uniform gap between its perimeter and the cylindrical wall indicates acceptable roundness. Based on the size of this gap, gradually adjust the position of the remaining sleeves 4 and the extension of each screw 6 until the gap is uniform. At this point, the screws 6 push out, exerting a reaction force on the sleeves 4, which then presses against the outer ring 3, securing them in place. Then, maintain the fixture stationary while welding is performed at the gap to install the partition plate.

[0018] It can be seen that the more the number of sliding sleeves 4 is, the more the number of supporting points is, which is more conducive to ensuring the roundness. This embodiment takes 12 as an example, and it can also be 18 or 24. Figure 3 As shown, the multiple sleeves 4 are unevenly distributed, with more at the upper and lower ends and fewer at the left and right ends, so as to adapt to the situation where the cylindrical workpiece 8 is placed horizontally and the cylinder wall collapses and tends to be elliptical. By adjusting the position of the support point through the uneven distribution of the sleeves 4, the ellipse is corrected to a circle.

[0019] In an exemplary sliding connection, the outer ring member 3 has an elliptical cross-section. The sliding sleeve 4 is slidably mounted on the outer ring member 3 and has notches 41 corresponding to the spokes 2 to prevent interference with the spokes 2 during sliding. The spiral sleeve 5 is fixed to the sleeve 4 at the end away from the notch 41. In another embodiment, the spiral sleeve 5 can be fixed to the side of the sleeve 4, achieving the same function.

[0020] To more securely secure the sleeve 4, the outer ring 3 is equipped with multiple circumferentially distributed insertion holes 31. The sleeve 4 is equipped with pin holes 42 corresponding to the insertion holes 31. When a pin passes through the pin holes 42 and is inserted into the insertion hole 31, the sleeve 4 is secured. As can be seen, the insertion holes 31 are densely distributed on the outer ring 3, allowing for flexible positioning of the sleeve 4.

[0021] In order to facilitate the rotation of the screw 6, a handle ring 61 is fixedly connected to the side wall of the screw 6 near the top plate 7 for driving the rotation of the screw 6. More preferably, there are two handle rings 61, which are symmetrically distributed on the left and right, so that they are convenient for grasping with both hands.

[0022] In order to avoid excessive support of the cylinder wall and thus causing damage to the cylinder wall, a rubber pad 71 is bonded to the outer end of the top plate 7 to play a buffering role.

[0023] In summary, this embodiment uses a sufficient number of support rods, and the position of each support rod can be adjusted so that the support point can be flexibly selected according to the deformation location of the cylindrical workpiece to ensure the roundness of the cylindrical workpiece, thereby facilitating the installation of accessories inside the tower and improving production efficiency.

[0024] The parts not described in detail in this utility model are prior art. For those skilled in the art, the technical features of the above embodiments can be combined in any way. To keep the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cylindrical workpiece circular fixture, characterized by: The invention comprises a core shaft (1) located at the center of the cylindrical workpiece (8), the outer wall of the core shaft (1) is fixedly connected to a plurality of spokes (2), the plurality of spokes (2) are radially distributed with the core shaft (1) as the center, and the outer ends of the spokes (2) are fixedly connected to the inner side of the outer ring member (3); the outer ring member (3) is slidably connected to at least 12 sleeves (4), the outer end of each sleeve (4) is fixedly connected to a screw sleeve (5), the screw sleeve (5) is threadedly connected to a screw rod (6), the end of the screw rod (6) is fixedly connected to a top plate (7), and the top plate (7) supports the inner wall of the cylindrical workpiece (8).

2. The cylindrical workpiece circular positioning fixture according to claim 1, characterized in that: The cross section of the outer ring member (3) is elliptical; the sliding sleeve (4) is slidably mounted on the outer ring member (3) and is provided with a notch (41) corresponding to the spoke (2) for avoiding interference with the spoke (2) when the sliding sleeve (4) slides; The spiral sleeve (5) is fixedly connected to the other end of the sliding sleeve (4) away from the notch (41).

3. The cylindrical workpiece circular positioning fixture according to claim 1, characterized in that: The outer ring member (3) is provided with a plurality of circumferentially evenly distributed insertion holes (31); the sliding sleeve (4) is provided with a pin hole (42) corresponding to the insertion hole (31), which is used to fix the sliding sleeve (4) when the pin member passes through the pin hole (42) and is inserted into the insertion hole (31).

4. The cylindrical workpiece circular positioning fixture according to claim 1, characterized in that: A handle ring (61) is fixedly connected to the side wall of the screw rod (6) near the top plate (7) and is used to drive the screw rod (6) to rotate.

5. The cylindrical workpiece circular positioning fixture according to claim 1, characterized in that: A rubber pad (71) is bonded to the outer end of the top plate (7).

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