A jacking mechanism for seamless 3PE anticorrosion treatment of bent pipes
The lifting mechanism, consisting of a lifting frame, bearing housing, and hydraulic cylinder, solves the problem of heat damage to the conveyor rollers and coating after medium-frequency heating and powder spraying of the bent pipe, thus protecting the safety of the conveyor and the bent pipe and ensuring the stability of the production line.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO HUASHIDA MACHINERY
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-14
AI Technical Summary
After the tube is heated by medium frequency and powder sprayed, the heat can easily damage the conveyor's rubber rollers and may also damage the coating of the tube.
The lifting mechanism consists of a lifting frame, bearing housing, rubber-coated rollers, and hydraulic cylinders. The lifting of the lifting frame and rubber-coated rollers is controlled by hydraulic pressure to prevent the rubber-coated rollers from contacting the hot bending pipe and to protect the coating of the conveyor and the bending pipe.
It effectively prevents damage to the conveyor rollers and the coating of the bend pipe, adapts to various pipe diameters, and ensures the synchronization and consistency of the production line.
Smart Images
Figure CN224486465U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of 3PE anti-corrosion treatment technology for bent pipes, specifically a lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes. Background Technology
[0002] In pipeline construction, a large number of bends are required. To improve the service life of the pipeline, these bends need to undergo 3PE anti-corrosion treatment. During the 3PE production of the bends, they rotate around a rotation center on a conveyor line, undergoing a series of anti-corrosion processes including medium-frequency heating, powder spraying, and winding. Thrust arms at both ends of the bend propel it forward and correct its rotation direction. These thrust arms also move on the conveyor, and rubber rollers on the conveyor support the thrust arms.
[0003] However, after the tube is heated by medium frequency and powder sprayed, the heat on the tube can easily damage the conveyor's rubber rollers and cause the rubber rollers to damage the coating of the tube.
[0004] Therefore, we propose a lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes, preventing the heat on the bent pipe from damaging the conveyor's rubber rollers and preventing the rubber rollers from damaging the coating of the bent pipe.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes, comprising a lifting frame, bearing seats, adhesive rollers, a hydraulic cylinder, and a fixed base frame. The fixed base frame is installed on the ground, the hydraulic cylinder is fixedly installed on the fixed base frame, the lifting frame is fixedly installed on the upper end of the hydraulic cylinder, the bearing seats are fixedly installed on the lifting frame, and both ends of the adhesive rollers are rotatably installed on the bearing seats.
[0009] Preferably, a steel plate is fixedly connected to the top of the fixed base frame.
[0010] Preferably, a first flange is fixedly connected to the lower end of the hydraulic cylinder, and the lower end of the hydraulic cylinder is fixedly installed to the steel plate through the first flange.
[0011] Preferably, there are four hydraulic cylinders, which are arranged in a matrix on both sides of the lifting frame.
[0012] Preferably, support plates are fixedly connected to all four corners of the lifting frame.
[0013] Preferably, a second flange is fixedly connected to the upper end of the hydraulic cylinder, and the upper end of the hydraulic cylinder is fixedly installed to the support plate through the second flange.
[0014] Preferably, both ends of the lifting frame are fixedly connected to support seats, and the bearing seat is fixedly installed on the top of the support seat.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, the present invention provides a method with the following beneficial effects:
[0017] 1. This utility model, by setting up a lifting frame, bearing seat, adhesive roller, hydraulic cylinder, and fixed base frame, allows the thrust arms to be inserted at the front and rear positions of the bent pipe when it is placed on the 3PE conveyor line. The rotation center drives the front and rear thrust arms, and the bent pipe begins to move in a circular motion around the rotation center under the action of the front and rear thrust arms. Both the thrust arms and the bent pipe are supported by the adhesive roller on the conveyor. When the front thrust arm moves to the front and rear of the intermediate frequency chamber and the front and rear of the powder spraying chamber, the hydraulic cylinder, under the action of the hydraulic station, drives the lifting frame, bearing seat, and adhesive roller on it to rise, providing support for the front thrust arm and facilitating the circular motion of the thrust arm. As the thrust arm passes, the bend enters the medium-frequency heating system, which heats it to a suitable temperature. At this point, the hydraulic cylinder, under the action of the hydraulic station, drives the lifting frame, bearing seat, and adhesive rollers on it to descend, preventing the adhesive rollers from contacting the hot bend. After the bend is powder-coated, to prevent damage to the coating, the adhesive rollers on the conveyor after the powder spraying chamber also descend until the bend passes. When the rear thrust arm passes this point, the adhesive rollers on the conveyor rise again, thus preventing the heat from the bend from damaging the adhesive rollers on the conveyor and preventing the adhesive rollers from damaging the coating of the bend.
[0018] 2. This utility model can move its position and height according to the curvature radius of the bend, adapting to various pipe diameters and having higher compatibility. The hydraulically controlled lifting and lowering is fast and stable. The power-free design allows the entire production line to be powered by the rotating center, ensuring synchronization and consistency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;
[0021] Figure 3 This is a schematic diagram of the main structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the left-side structure of this utility model;
[0023] Figure 5 This is a top view of the structure of this utility model.
[0024] In the picture:
[0025] 1. Lifting frame; 11. Support plate; 12. Support base;
[0026] 2. Bearing housing;
[0027] 3. Rubber-coated idlers;
[0028] 4. Hydraulic cylinder; 41. First flange; 42. Second flange;
[0029] 5. Fixed base frame; 51. Steel plate. Detailed Implementation
[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0031] This utility model provides a technical solution:
[0032] Please see Figures 1-5 A lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes includes a lifting frame 1, bearing seats 2, adhesive-coated rollers 3, hydraulic cylinders 4, and a fixed base frame 5. On a 3PE bent pipe production line, the fixed base frame 5 is installed on the ground. When the diameter or curvature of the bent pipe changes, the position of the fixed base frame 5 can be moved according to the radius of curvature of the bent pipe. The hydraulic cylinders 4 are fixedly installed on the fixed base frame 5. The lifting frame 1 is fixedly installed on the upper end of the hydraulic cylinders 4. There are four hydraulic cylinders 4, which lift and lower together. The four hydraulic cylinders 4 are distributed in a matrix on both sides of the lifting frame 1. When the hydraulic cylinders 4 rise, they drive the lifting frame 1 to rise; when the hydraulic cylinders 4 fall, they drive the lifting frame 1 to fall. The bearing seats 2 are fixedly installed on the lifting frame 1. Both ends of the adhesive-coated rollers 3 are rotatably mounted on the bearing seats 2. The bent pipe or thrust arm is supported by the adhesive-coated rollers 3, ensuring rotation around the center. The adhesive-coated rollers 3 can rotate due to friction as the bent pipe or thrust arm moves forward.
[0033] By setting up a lifting frame 1, bearing seat 2, adhesive roller 3, hydraulic cylinder 4, and fixed base frame 5, when the bent pipe is placed on the 3PE conveyor line, the thrust arms are inserted into the front and rear positions of the bent pipe respectively. The rotation center drives the front and rear thrust arms, and the bent pipe also begins to move in a circle around the rotation center under the action of the front and rear thrust arms. Both the thrust arms and the bent pipe are supported by the adhesive roller 3 on the conveyor. When the front thrust arm moves to the front and rear of the intermediate frequency chamber and the front and rear of the powder spraying chamber, the hydraulic cylinder 4, under the action of the hydraulic station, drives the lifting frame 1, bearing seat 2, and adhesive roller 3 on it to rise, providing support for the front thrust arm and facilitating the circular movement of the thrust arm. As the thrust arm passes, the bent pipe enters the medium-frequency heating system, where the medium-frequency heating system heats the bent pipe to a suitable temperature. At this time, under the action of the hydraulic station, the hydraulic cylinder 4 drives the lifting frame 1, bearing seat 2, and adhesive roller 3 on it to descend, preventing the adhesive roller 3 from contacting the hot bent pipe. After the bent pipe is powder-coated, in order to avoid damage to the coating, the adhesive roller 3 on the conveyor after the powder spraying chamber also descends until the bent pipe passes. When the rear thrust arm passes this point, the adhesive roller 3 on the conveyor rises again, thereby preventing the heat on the bent pipe from damaging the adhesive roller 3 on the conveyor and preventing the adhesive roller 3 from damaging the coating of the bent pipe.
[0034] When the radius of curvature or the diameter of the bend changes, in order to ensure a unified center, all conveyors on the production line must be arranged according to the radius of curvature to adapt to the arc-shaped structure of the bend.
[0035] Specifically, a steel plate 51 is fixedly connected to the top of the fixed base frame 5, and support plates 11 are fixedly connected to the four corners of the lifting frame 1. A first flange 41 is fixedly connected to the lower end of the hydraulic cylinder 4, and the lower end of the hydraulic cylinder 4 is fixedly installed to the steel plate 51 through the first flange 41. A second flange 42 is fixedly connected to the upper end of the hydraulic cylinder 4, and the upper end of the hydraulic cylinder 4 is fixedly installed to the support plate 11 through the second flange 42.
[0036] Specifically, both ends of the lifting frame 1 are fixedly connected to support seats 12, and bearing seats 2 are fixedly installed on the top of the support seats 12. By setting the support seats 12, the bearing seats 2 can be supported and fixed.
[0037] In practical use, the working principle of this utility model is as follows:
[0038] First, on the 3PE pipe bending production line, the fixed base frame 5 is installed on the ground. When the pipe diameter or curvature changes, the position of the fixed base frame 5 can be moved according to the curvature radius of the pipe.
[0039] Next, when the bent pipe is placed on the 3PE conveyor line, the thrust arms are inserted at the front and rear positions of the bent pipe respectively. The rotation center drives the front and rear thrust arms, and the bent pipe also begins to move in a circle around the rotation center under the action of the front and rear thrust arms. Both the thrust arms and the bent pipe are supported by the rubber-coated rollers 3 on the conveyor. When the front thrust arm moves to the front and rear of the intermediate frequency chamber and the front and rear of the powder spraying chamber, the hydraulic cylinder 4, under the action of the hydraulic station, drives the lifting frame 1, bearing seat 2 and rubber-coated rollers 3 on it to rise, providing support for the front thrust arm and facilitating the circular motion of the thrust arm.
[0040] As the thrust arm passes, the bent pipe enters the medium-frequency heating system, where the medium-frequency heating system heats the bent pipe to a suitable temperature. At this time, under the action of the hydraulic station, the hydraulic cylinder 4 drives the lifting frame 1, bearing seat 2, and adhesive roller 3 on it to descend, preventing the adhesive roller 3 from contacting the hot bent pipe. After the bent pipe is powder-coated, in order to avoid damage to the coating, the adhesive roller 3 on the conveyor after the powder spraying chamber also descends until the bent pipe passes. When the rear thrust arm passes this point, the adhesive roller 3 on the conveyor rises again.
[0041] In summary, this lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes, through the setting of a lifting frame 1, bearing seat 2, adhesive roller 3, hydraulic cylinder 4, and fixed base frame 5, prevents the heat on the bent pipe from damaging the adhesive roller 3 of the conveyor and prevents the adhesive roller 3 from damaging the coating of the bent pipe. It can move its position and height according to the curvature radius of the bent pipe, adapting to various pipe diameters and having higher compatibility. The hydraulically controlled lifting and lowering is fast and smooth. The powerless design allows the entire production line to be uniformly powered by the rotating center, ensuring synchronization and consistency.
[0042] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.
Claims
1. A jacking mechanism for seamless 3PE anticorrosion treatment of bent pipes, comprising a lifting frame (1), a bearing seat (2), a glue hanging roller (3), a hydraulic oil cylinder (4) and a fixed chassis (5), characterized in that: The fixed base frame (5) is installed on the ground, the hydraulic cylinder (4) is fixedly installed on the fixed base frame (5), the lifting frame (1) is fixedly installed on the upper end of the hydraulic cylinder (4), the bearing seat (2) is fixedly installed on the lifting frame (1), and both ends of the adhesive roller (3) are rotatably installed on the bearing seat (2).
2. The jacking mechanism for seamless 3PE anticorrosion treatment of bent pipes according to claim 1, characterized in that: A steel plate (51) is fixedly connected to the top of the fixed base frame (5).
3. The lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes according to claim 2, characterized in that: The lower end of the hydraulic cylinder (4) is fixedly connected to a first flange (41), and the lower end of the hydraulic cylinder (4) is fixedly installed to the steel plate (51) through the first flange (41).
4. The lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes according to claim 1, characterized in that: There are four hydraulic cylinders (4), which are arranged in a matrix on both sides of the lifting frame (1).
5. A lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes according to claim 1, characterized in that: Support plates (11) are fixedly connected to the four corners of the lifting frame (1).
6. A lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes according to claim 5, characterized in that: The upper end of the hydraulic cylinder (4) is fixedly connected to a second flange (42), and the upper end of the hydraulic cylinder (4) is fixedly installed to the support plate (11) through the second flange (42).
7. A lifting mechanism for seamless 3PE anti-corrosion treatment of bent pipes according to claim 1, characterized in that: Both ends of the lifting frame (1) are fixedly connected to support seats (12), and the bearing seat (2) is fixedly installed on the top of the support seat (12).