A construction device suitable for local rounding of the mouth of a pressure steel pipe

Abstract

A kind of construction device suitable for local rounding of pressure steel pipe mouth, including base, at least two tooling fixtures and a pressurizing device are provided on the base, and the pressurizing device is located between the two tooling fixtures;Tooling fixture is used to be detachably installed on pressure steel pipe.This tooling fixture is small and light, workers can manually install it to the specified site, such as steel pipe convex, then arrange the jack on the outside, otherwise concave, slightly adjust the jack, the roundness of steel pipe can be adjusted locally, the number of rounding tooling fixture installation can be adjusted according to the size of pipe section as needed.This rounding tooling fixture is simple in structure, simple to disassemble, small in occupied space, and can greatly improve production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary devices for rounding in the manufacturing process of pressure steel pipes, and specifically relates to a construction device suitable for local rounding of the pipe end of pressure steel pipes. Background Technology

[0002] The various processes in the fabrication of pressure steel pipes for hydropower stations are closely interconnected and mutually influential. Pipe rounding is an essential step, as the roundness of the pipe directly affects the progress of subsequent processes. During the rolling and welding of the pipe, slight localized deformation at the pipe end is inevitable. In such cases, the pipe does not require overall straightening. If the pipe is hoisted back to the rolling mill for re-rounding, this process is time-consuming and labor-intensive, impacting manufacturing efficiency and potentially damaging the base material. Furthermore, after welding the stiffening ring, the pipe cannot be returned to the rolling mill.

[0003] Therefore, there is an urgent need to design a new type of construction device for locally rounding the nozzle of a pressure steel pipe. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a construction device suitable for local rounding of the pipe end of a pressure steel pipe, which solves the problem of rounding the pipe end due to local deformation during the manufacturing process of pressure steel pipe, while also avoiding damage to the steel pipe during the manufacturing process, improving efficiency and reducing the consumption of auxiliary materials.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A construction device for local rounding of the nozzle of a pressure steel pipe includes a base, on which at least two tooling fixtures and a pressurizing device are provided, with the pressurizing device located between the two tooling fixtures; the tooling fixtures are for detachable installation on the pressure steel pipe.

[0007] Preferably, the pressurizing device is located in the middle of the two tooling fixtures.

[0008] Preferably, the tooling fixture includes a rod body, one end of which is provided with a hook plate, and the other end of which is provided with a tooling fixture connector; the tooling fixture connector is connected to the base, and the hook plate is used to hook onto the pressure steel pipe opening.

[0009] Preferably, the pressurizing device includes a jack, the fixed end of which is mounted on a base, and the telescopic end of which is equipped with a push plate.

[0010] Preferably, the pressurizing device includes a jack, the fixed end of which is mounted on a base, and the telescopic end of which is equipped with a pull plate.

[0011] Preferably, the hook plate has a beveled sidewall, the slope of which is used to match the curvature of the pressure steel pipe opening.

[0012] Preferably, the base includes a rectangular steel plate, which is welded or threaded to the tooling fixture connector.

[0013] Preferably, a reinforcing column is welded onto the base.

[0014] The present invention can achieve the following beneficial effects:

[0015] This tooling fixture is compact and lightweight, allowing workers to manually install it to designated positions. For example, if the steel pipe bulges outward, the jacks are positioned on the outer side; conversely, if it's concave, they are positioned on the inner side. Slight adjustments to the jacks allow for localized adjustments to the pipe's roundness. The number of rounding fixtures installed can be adjusted according to the pipe section size. This rounding fixture has a simple structure, is easy to disassemble, occupies little space, and can significantly improve production efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Fig. 1 This is a schematic diagram illustrating the working principle of this utility model.

[0018] Fig. 2 This is a structural diagram of the tooling fixture of this utility model;

[0019] Fig. 3 This is a structural diagram showing the connection between the base and the tooling fixture of this utility model.

[0020] In the diagram: 1. Base; 2. Fixture; 201. Rod; 202. Hook plate; 203. Fixture connector; 3. Pressurizing device; 4. Pressure steel pipe; 5. Reinforcing column. Detailed Implementation

[0021] Preferred solutions include Figs. 1 to 3 As shown, a construction device suitable for local rounding of the nozzle of a pressure steel pipe includes a base 1, on which at least two tooling fixtures 2 and a pressurizing device 3 are provided, with the pressurizing device 3 located between the two tooling fixtures 2; the tooling fixtures 2 are used for detachable installation on the pressure steel pipe 4.

[0022] The tooling fixture 2 is a steel structure grab arm. Specifically, the tooling fixture 2 includes a rod 201, with a hook plate 202 at one end and a tooling fixture connector 203 at the other end. The tooling fixture connector 203 is connected to the base 1, and the hook plate 202 is used to hook onto the pressure steel pipe opening. The tooling fixture 2 uses a 30mm thick steel plate, and the part that engages with the pressure steel pipe opening (i.e., the hook plate 202) is 50mm wide and 70mm deep, and the parameters can be adjusted according to the actual working conditions.

[0023] Specifically, the pressurizing device 3 is located in the middle of the two tooling fixtures 2. This is mainly to ensure that the force applied by the pressurizing device 3 is relatively uniform. The pressurizing device 3 includes a jack, the fixed end of which is mounted on the base 1, and the telescopic end of which is equipped with a push plate.

[0024] As a preferred embodiment, the hook plate 202 has a beveled sidewall, the slope of which is used to match the curvature of the pressure steel pipe opening. This increases the contact area between the hook plate 202 and the wall (outer or inner wall) of the pressure steel pipe opening, thereby reducing the pressure at local stress points.

[0025] Specifically, the base 1 includes a rectangular steel plate, which is welded to or threaded to the tooling fixture connector 203. Reinforcing columns are welded onto the base 1.

[0026] The installation process for this device is as follows:

[0027] (1) When the pipe section is hoisted into place, the inner support is hoisted into the steel pipe for installation;

[0028] (2) Use a template to check the roundness of the steel pipe, mark the places that need to be corrected, determine whether the steel pipe is concave or convex, and determine the direction of the clamp;

[0029] (3) Clamp the rounding fixture near the deformed area and use the fine-tuning jack to hold it in place;

[0030] (4) Adjust the jack and use a template to check the roundness. Repeat the operation until the requirements are met.

[0031] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A construction device suitable for local rounding of the nozzle of a pressure steel pipe, characterized in that: Includes a base (1), on which at least two tooling fixtures (2) and a pressurizing device (3) are provided, the pressurizing device (3) being located between the two tooling fixtures (2); the tooling fixtures (2) are used to be detachably installed on the pressure steel pipe (4).

2. The construction device for local rounding of the nozzle of a pressure steel pipe according to claim 1, characterized in that: The pressurizing device (3) is located in the middle of the two tooling fixtures (2).

3. The construction device for local rounding of the nozzle of a pressure steel pipe according to claim 1, characterized in that: The tooling fixture (2) includes a rod (201), one end of which is provided with a hook plate (202), and the other end of which is provided with a tooling fixture connector (203); the tooling fixture connector (203) is connected to the base (1), and the hook plate (202) is used to hang on the pressure steel pipe opening.

4. The construction device for local rounding of the nozzle of a pressure steel pipe according to claim 1, characterized in that: The pressurizing device (3) includes a jack, the fixed end of which is mounted on the base (1), and the telescopic end of which is equipped with a push plate.

5. The construction device for local rounding of the nozzle of a pressure steel pipe according to claim 1, characterized in that: The pressurizing device (3) includes a jack, the fixed end of which is mounted on the base (1), and the telescopic end of which is equipped with a pull plate.

6. The construction device for local rounding of the nozzle of a pressure steel pipe according to claim 3, characterized in that: The hook plate (202) has a bevel on its side wall, and the slope of the bevel is used to match the curvature of the pressure steel pipe opening.

7. A construction device for local rounding of the nozzle of a pressure steel pipe according to claim 6, characterized in that: A reinforcing column is welded onto the base (1).

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