Corrosion-proof brushing mechanism for circumferential weld of pressure steel pipe

Abstract

The application relates to a pressure steel pipe circumferential weld anticorrosion brushing mechanism. The application is suitable for the technical field of water conservancy and hydropower engineering. The application aims to provide a pressure steel pipe circumferential weld anticorrosion brushing mechanism. The application adopts the technical scheme that the pressure steel pipe circumferential weld anticorrosion brushing mechanism comprises the following parts: a wheel disc which has two concentric coaxial arrangements and whose inner diameter is larger than the outer diameter of the pressure steel pipe; a radial adjusting mechanism which has at least three and is arranged between the two wheel discs and is uniformly distributed along the wheel disc; a roller which is arranged in one-to-one correspondence with the radial adjusting mechanism and is installed on the corresponding radial adjusting mechanism, the position of the roller in the radial direction of the wheel disc can be adjusted through the radial adjusting mechanism, and the roller axis is parallel to the wheel disc axis; and a driving mechanism which is used for driving the wheel disc to rotate around the pressure steel pipe.

Description

Technical Field

[0001] This utility model relates to a corrosion-resistant coating mechanism for the circumferential weld seam of pressure steel pipes. It is applicable to the field of water conservancy and hydropower engineering technology. Background Technology

[0002] The construction of long-distance pressurized water conveyance projects across river basins and regions is an effective way to alleviate the contradiction between water supply and demand in society. With the large-scale construction of long-distance water conveyance projects, the application of pressure steel pipes is becoming increasingly widespread. Pressure steel pipes are generally prefabricated in factories in sections of a certain length and then welded on site. The circumferential welds between each section and the anti-corrosion work are carried out on site. Furthermore, pressure steel pipes are generally buried underground or exposed in tunnels, resulting in poor maintenance conditions. Therefore, the quality of these sections is a controlling factor for the overall quality and long-term safe operation of the project.

[0003] Currently, corrosion protection at weld joints is generally done manually, resulting in poor appearance and quality control. This is mainly due to the uneven thickness of the anti-corrosion coating during manual application. Considering the high maintenance and repair costs during the later operation of the pressure steel pipe, measures should be taken during the construction phase to control the quality of corrosion protection at weld joints. Summary of the Invention

[0004] The technical problem to be solved by this utility model is: to provide a pressure steel pipe circumferential weld anti-corrosion coating mechanism in view of the above-mentioned problems.

[0005] The technical solution adopted in this utility model is: a corrosion protection coating mechanism for the circumferential weld of a pressure steel pipe, characterized in that it includes:

[0006] The wheel has two concentric and coaxially arranged discs, and the inner diameter of the disc is larger than the outer diameter of the pressure steel pipe.

[0007] The radial adjustment mechanism has at least three parts, which are disposed between the two discs and are evenly distributed along the circumference of the discs;

[0008] The rollers are paired with the radial adjustment mechanisms and installed on the corresponding radial adjustment mechanisms. The radial adjustment mechanisms can adjust the position of the rollers in the radial direction of the wheel. The axis of the rollers is parallel to the axis of the wheel.

[0009] A drive mechanism is used to drive the wheel to rotate around the pressure steel pipe.

[0010] The wheel is divided into at least two arc segments, which are connected by clamping pads and clamping screws.

[0011] The radial adjustment mechanism includes a waist hole and a waist rod, wherein the waist hole is arranged radially along the wheel, the waist rod is arranged parallel to the wheel axis and both ends of the waist rod are inserted into the waist hole, the waist rod can move radially along the wheel within the waist hole, and the waist rod can be equipped with a locking nut to lock it at any position within the waist hole, and the roller is mounted on the waist rod in a way that allows it to rotate around the waist rod.

[0012] The radial adjustment mechanism includes a mounting base, a cylinder, and a mounting frame. The cylinder is arranged radially along the wheel. The rodless end of the cylinder is connected to the wheel via the mounting base, and the rod end of the cylinder is mounted on the roller via the mounting frame. The rodless ends of the cylinders are connected in series via pipelines.

[0013] The drive mechanism is connected to the gears on the wheel, and the gears on the wheel are arranged concentrically and coaxially with the wheel.

[0014] The beneficial effects of this utility model are as follows: In this utility model, the wheel is fitted onto the pressure steel pipe, and the position of the roller is adjusted by the radial adjustment mechanism so that the roller presses against the outer side of the pressure steel pipe. When the wheel is rotated, the roller rotates and simultaneously moves in a circular motion around the outer surface of the steel pipe, so that the anti-corrosion coating is evenly applied to the weld position. This simplifies the process, ensures the anti-corrosion quality of the weld position, and saves investment.

[0015] This invention allows the roller to contact or separate from the pressure steel pipe via a radial adjustment mechanism, facilitating rapid repositioning of the coating mechanism, enabling repeated use, and saving investment. Attached Figure Description

[0016] Figure 1 This is a side view of the wheel in the embodiment.

[0017] Figure 2 This is an axial view of the wheel in the embodiment.

[0018] Figure 3 This is a front view of an embodiment.

[0019] Figure 4 This is a side view of an embodiment.

[0020] Figure 5 This is an axial view of an embodiment.

[0021] In the attached diagram, 1-wheel; 2-waist hole; 3-screw; 4-roller; 5-steel pipe; 6-clamping pad; 7-clamping screw; 8-clamping waist hole; Detailed Implementation

[0022] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0023] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0025] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0026] This embodiment provides a corrosion protection coating mechanism for the circumferential weld of a pressure steel pipe, including: a wheel, a radial adjustment mechanism, a roller, and a drive mechanism.

[0027] In this example, there are two discs, which are arranged concentrically and coaxially. The inner diameter of the disc is larger than the outer diameter of the pressure steel pipe, so that the disc can be coaxially mounted on the pressure steel pipe and can rotate around the pressure steel pipe.

[0028] In this embodiment, there are 6 radial adjustment mechanisms, all of which are arranged between the two wheels and are evenly distributed at 60° angles along the circumference of the wheels.

[0029] In this embodiment, there are six rollers, each paired with a radial adjustment mechanism, and mounted on a wheel disk via the corresponding radial adjustment mechanism. The roller axis is parallel to the wheel disk axis, and the roller can rotate around its own axis. In this example, the radial adjustment mechanism can adjust the position of the roller in the radial direction of the wheel disk to achieve contact or separation between the roller and the pressure steel pipe.

[0030] In this example, the drive mechanism is used to drive the wheel to rotate around the pressure steel pipe. The drive mechanism can be manual or electric. The wheel can be driven manually or by a geared electric motor. When driven by an electric motor, the electric motor is connected to the gear on the wheel. The gear on the wheel is arranged concentrically and coaxially with the wheel.

[0031] The working principle of this embodiment is as follows: The wheel is placed on the pressure steel pipe and moved to the circumferential weld position. The radial adjustment mechanism is used to adjust the radial position of the roller on the wheel so that the roller presses against the pressure steel pipe to ensure the coating quality of the roller. By driving the wheel to rotate around the pressure steel pipe, the roller rotates around the pressure steel pipe and at the same time rotates around its own axis. The roller achieves uniform and rapid coating of paint on the circumferential weld position. Then, the radial adjustment mechanism is used to adjust the radial position of the roller on the wheel so that the roller separates from the pressure steel pipe, making it easy to move to the next weld position.

[0032] In some specific embodiments, the wheel is composed of two semi-circular arc segments spliced ​​together. The arc segments are connected by clamping shims and clamping screws. Clamping screws are installed at both ends of the clamping shims. The clamping screws can be connected by clamping waist holes at the ends of the arc segments, thereby facilitating the installation of the wheel on the outside of the steel pipe.

[0033] In some specific embodiments, the radial adjustment mechanism includes a waist hole and a waist rod, wherein the waist hole is arranged radially along the wheel disk in the length direction, the waist rod is arranged parallel to the wheel disk axis, and the two ends of the waist rod pass through the corresponding waist holes on the two wheel disks and are connected to locking nuts. The waist rod can move radially along the wheel disk within the waist hole, and the waist rod can be locked at any position within the waist hole by tightening the locking nut.

[0034] In this embodiment, a roller is installed on the waist bar, and the waist bar and the roller are arranged coaxially. The roller is installed on the waist bar in a way that allows it to rotate around the waist bar.

[0035] In some specific embodiments, the radial adjustment mechanism includes a mounting base, a cylinder, and a mounting frame. The cylinder is arranged radially parallel to the wheel, with the rodless end of the cylinder facing outward and connected to the wheel via the mounting base. The rod end of the cylinder faces inward and is mounted on the roller via the mounting frame. The roller can rotate around its own axis on the mounting frame, and the radial position of the roller on the wheel can be adjusted by the cylinder.

[0036] In this embodiment, the rodless chambers of each cylinder are connected in series via pipelines and are also connected to the first charging / discharging pipeline; the rod chambers of each cylinder are connected in series via pipelines and are also connected to the second charging / discharging pipeline. When the cylinders press the rollers against the outer surface of the pressure steel pipe, the series connection of the rodless chambers of each cylinder ensures that the pressure of each roller on the pressure steel pipe is basically the same, thus ensuring the coating quality of each roller.

[0037] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A mechanism for applying anti-corrosion coating to the circumferential weld of a pressure steel pipe, characterized in that, include: The wheel has two concentric and coaxially arranged discs, and the inner diameter of the disc is larger than the outer diameter of the pressure steel pipe. The radial adjustment mechanism has at least three parts, which are disposed between the two discs and are evenly distributed along the circumference of the discs; The rollers are paired with the radial adjustment mechanisms and installed on the corresponding radial adjustment mechanisms. The radial adjustment mechanisms can adjust the position of the rollers in the radial direction of the wheel. The axis of the rollers is parallel to the axis of the wheel. A drive mechanism is used to drive the wheel to rotate around the pressure steel pipe.

2. The anti-corrosion coating mechanism for the circumferential weld of pressure steel pipe according to claim 1, characterized in that: The wheel is divided into at least two arc segments, which are connected by clamping pads and clamping screws.

3. The anti-corrosion coating mechanism for the circumferential weld of pressure steel pipe according to claim 1, characterized in that: The radial adjustment mechanism includes a waist hole and a waist rod, wherein the waist hole is arranged radially along the wheel, the waist rod is arranged parallel to the wheel axis and both ends of the waist rod are inserted into the waist hole, the waist rod can move radially along the wheel within the waist hole, and the waist rod can be equipped with a locking nut to lock it at any position within the waist hole, and the roller is mounted on the waist rod in a way that allows it to rotate around the waist rod.

4. The anti-corrosion coating mechanism for the circumferential weld of pressure steel pipe according to claim 1, characterized in that: The radial adjustment mechanism includes a mounting base, a cylinder, and a mounting frame. The cylinder is arranged radially along the wheel. The rodless end of the cylinder is connected to the wheel via the mounting base, and the rod end of the cylinder is mounted on the roller via the mounting frame. The rodless ends of the cylinders are connected in series via pipelines.

5. The anti-corrosion coating mechanism for the circumferential weld of pressure steel pipe according to claim 1, characterized in that: The drive mechanism is connected to the gears on the wheel, and the gears on the wheel are arranged concentrically and coaxially with the wheel.

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