Positioning device for surfacing inside natural gas pipeline

Abstract

A positioning device for surfacing inside a natural gas pipeline comprises a bottom plate, a first supporting frame and a second supporting frame are installed on the bottom plate, a first ring body is fixedly installed on the first supporting frame through a plurality of fixing rods, a second ring body is rotatably installed on the second supporting frame through a plurality of sliding rails, and a pressing claw is rotatably installed on the first ring body. Pressing parts are installed at the ends of the pressing claws, a plurality of sliding grooves are formed in the second ring body, guide rails are installed in the sliding grooves in a sliding mode, connecting shafts are installed in the guide rails in a sliding mode, and the connecting shafts are rotationally connected with the middles of the pressing claws to form a structure for rotating the second ring body to enable the pressing claws to rotate; according to the high device, the second ring body is rotated, so that the pressing claws and the pressing parts on the pressing claws can flexibly move to the outer side of a to-be-fixed pipeline, the pressing claws are tightly pressed on the pipeline through the pressing parts, and therefore rapid and accurate pipeline positioning is achieved; and the pressing claws are connected with the second ring body through the sliding rails and the connecting shafts, so that the device can adapt to pipelines with different diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline cladding, in particular to a positioning device for internal cladding of a natural gas pipeline. Background Art

[0002] As an economical and fast process for modifying the surface of materials, cladding is widely used in the manufacture and repair of parts in various industrial sectors. In the natural gas pipeline industry, anti-corrosion cladding is particularly important because it reduces the production cost of workpieces, shortens production time, and improves the mechanical properties of workpieces by cladding metals with good anti-corrosion properties (such as stainless steel, duplex steel, etc.) on ordinary steel.

[0003] When the pipeline is processed by the surfacing method, such as the application number: CN202022006594.0, the patent name is a utility model patent for a precise positioning device for pipeline surfacing clamping, which discloses a precise positioning device for pipeline surfacing clamping, including a base, a support plate is fixedly connected to the top of the base, a cover plate is arranged on one side of the support plate, and a first groove is provided on the plate wall of the support plate close to the cover plate. The beneficial effects of the utility model are: the precise positioning device for pipeline surfacing clamping of the utility model is simple in structure and easy to use. The spiral disk located in the first groove is driven to rotate by the rotating shaft. When the spiral disk rotates, it can synchronously drive the four meshing blocks to move toward each other. The four meshing blocks respectively drive the arc clamping blocks to clamp the four sides of the pipeline through four transmission blocks. This is to prevent the pipeline from shaking during the welding process, resulting in poor welding effect. However, the diameter of the steel pipe that can be positioned is limited, and it cannot be used for the positioning of various steel pipes.

[0004] Therefore, a positioning device for internal cladding of natural gas pipelines is needed to solve this problem. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a positioning device for internal cladding of a natural gas pipeline, which effectively solves the above problems.

[0006] The technical solution is as follows: the utility model comprises a base plate, a first support frame and a second support frame are mounted on the base plate, a first ring body is fixedly mounted on the first support frame via a plurality of fixing rods, a second ring body is rotatably mounted on the second support frame via a plurality of slide rails, a pressure claw is rotatably mounted on the first ring body, a pressing portion is mounted on the end of the pressure claw, a plurality of slide grooves are provided on the second ring body, guide rails are slidably mounted in the slide grooves, a connecting shaft is slidably mounted in the guide rails, the connecting shaft is rotatably connected to the middle part of the pressure claw, forming a structure for rotating the second ring body to rotate the pressure claw.

[0007] Furthermore, the pressing part includes a bracket, one end of which is rotatably mounted on the end of the pressing claw, and the other end of the bracket is mounted with an arc-shaped pressing plate, the concave surface of the arc-shaped pressing plate is provided with a friction layer, and the inner side of the pressing claw is also provided with a tension spring, and the end of the tension spring is connected to the convex surface of the arc-shaped pressing plate.

[0008] Furthermore, the pressing part is a rotating roller whose peripheral side surface is a friction surface, and the pressing claw is also provided with an adjusting motor for driving the rotating roller to rotate.

[0009] Furthermore, limiting protrusions are provided on both sides of the guide rail.

[0010] Furthermore, a fixing plate is provided at the lower end of the base plate, which is fixedly connected to the base plate via a connecting rod. A rotatably fixed lead screw is provided on the base plate, and the end of the lead screw points to the outer side surface of the second ring body.

[0011] Furthermore, the number of the lead screws is greater than or equal to two.

[0012] Furthermore, an incomplete internal gear ring is provided on the inner side surface of the second ring body, a driving motor is provided on the first support frame or the second support frame, and a gear meshing with the incomplete internal gear ring is installed on the rotating shaft of the driving motor.

[0013] The beneficial effects of the utility model are:

[0014] 1. By rotating the second ring body, the pressing claw and the pressing part thereon can be flexibly moved to the outside of the pipe to be fixed, and the pressing part is tightly pressed on the pipe, thereby realizing fast and accurate pipe positioning;

[0015] 2. Since the pressing claw is connected to the second ring body through the slide rail and the connecting shaft, it can adapt to pipes of different diameters. In addition, the design of the arc-shaped pressing plate and the elasticity of the tension spring enable the pressing part to automatically adapt to the shape of the pipe, providing a more stable fixing effect;

[0016] 3. The device is designed with a rotating screw and a driving motor, which can easily adjust the position of the pressing claw and the pressing part, and fix the position of the second ring. At the same time, the universal wheel with brake at the lower end of the fixed plate allows the device to be easily moved to the position where it needs to be positioned, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the utility model from another viewing angle.

[0019] Figure 3 The utility model Figure 1 A is an enlarged view of the middle image. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0021] Example:

[0022] Depend on Figures 1 to 3 The utility model includes a base plate 1, on which a first support frame 2 and a second support frame 3 are installed, a first ring body 5 is fixedly installed on the first support frame 2 through a plurality of fixing rods 4, a second ring body 7 is rotatably installed on the second support frame 3 through a plurality of slide rails 6, a pressure claw 8 is rotatably installed on the first ring body 5, a pressing portion 9 is installed at the end of the pressure claw 8, a plurality of slide grooves are provided on the second ring body 7, a guide rail 10 is slidably installed in the slide groove, a connecting shaft 11 is slidably installed in the guide rail 10, the connecting shaft 11 is rotatably connected to the middle part of the pressure claw 8, forming a structure for rotating the second ring body 7 to rotate the pressure claw 8, and when the pressure claw 8 rotates, the pressing portion 9 can be driven to press on the outer side surface of the pipe to be fixed, and then the pipe body is fixed by fixing the second ring body 7.

[0023] The pressing portion 9 includes a bracket 12, one end of which is rotatably mounted on the end of the pressing claw 8, and an arc-shaped pressing plate 13 is installed on the other end of the bracket 12. The concave surface of the arc-shaped pressing plate 13 is provided with a friction layer, and the friction layer can be a rubber layer. A tension spring 14 is also provided on the inner side of the pressing claw 8, and the end of the tension spring 14 is connected to the convex surface of the arc-shaped pressing plate 13. The tension spring 14 can keep the pressing portion 9 in a state where it can contact the outer side surface of the pipe to be positioned with the friction layer at any time.

[0024] In order to facilitate the adjustment of the angle of the pipeline, the pressing part 9 is a rotating roller with a friction surface on the peripheral side. The pressing claw 8 is also provided with an adjusting motor for driving the rotating roller to rotate, so that the pipeline to be inspected can be rotated, which is convenient for surfacing welding on the working area.

[0025] Limiting protrusions are provided on both sides of the guide rail 10 to ensure the sliding state of the guide rail 10 and the second ring body 7 and prevent them from falling out of the sliding groove.

[0026] A fixing plate 15 is also provided at the lower end of the base plate 1 , and the fixing plate 15 is fixedly connected to the base plate 1 via a connecting rod. A screw 16 is rotatably mounted and fixed on the base plate 1 , and the end of the screw 16 points to the outer side of the second ring body 7 .

[0027] The number of the lead screws 16 is greater than or equal to two.

[0028] An incomplete inner gear ring 17 is provided on the inner side surface of the second ring body 7 , and a driving motor is provided on the first support frame 2 or the second support frame 3 . A gear meshing with the incomplete inner gear ring 17 is installed on the rotating shaft of the driving motor.

[0029] It should be noted that when the length of the tested pipe is long, in order to improve the stability of the pipe body positioning, two or more devices can be used to position the different ends of the tested pipe respectively. In order to achieve this goal, a universal wheel with a brake can be installed at the lower end of the fixed plate 15 to facilitate the adjustment of the position of the device.

[0030] When the utility model is in use, the lead screw 16 is rotated to make the second ring body 7 active, and the second ring body 7 is rotated to make the pressing claw 8 contracted. When the pipe to be positioned is placed in the inner space between the second ring body 7 and the first ring body 5 by a crane, the second ring body 7 is driven to rotate by a motor or manually, so that the pressing claw 8 extends inward and the pressing part 9 is pressed against the outer side surface of the pipe to be positioned. After the pressing part 9 is squeezed, the lead screw 16 is rotated so that the end of the lead screw 16 squeezes the outer side surface of the second ring body 7, thereby fixing the position of the second ring body 7 and completing the positioning of the pipe body.

[0031] The beneficial effects of the utility model are:

[0032] 1. By rotating the second ring body, the pressing claw and the pressing part thereon can be flexibly moved to the outside of the pipe to be fixed, and the pressing part is tightly pressed on the pipe, thereby realizing fast and accurate pipe positioning;

[0033] 2. Since the pressing claw is connected to the second ring body through the slide rail and the connecting shaft, it can adapt to pipes of different diameters. In addition, the design of the arc-shaped pressing plate and the elasticity of the tension spring enable the pressing part to automatically adapt to the shape of the pipe, providing a more stable fixing effect;

[0034] 3. The device is designed with a rotating screw and a driving motor, which can easily adjust the position of the pressing claw and the pressing part, and fix the position of the second ring. At the same time, the universal wheel with brake at the lower end of the fixed plate allows the device to be easily moved to the position where it needs to be positioned, thereby improving work efficiency.

[0035] The above-mentioned specific implementation modes / embodiments are specific implementation modes of the utility model, which are used to illustrate the concept of the utility model, are explanatory and exemplary, and should not be interpreted as limiting the implementation modes of the utility model and the scope of the utility model. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application. These technical solutions include technical solutions that make any obvious replacements and modifications to the embodiments described herein, which are within the scope of protection of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A positioning device for internal cladding of a natural gas pipeline, comprising a base plate (1), characterized in that: A first support frame (2) and a second support frame (3) are mounted on the bottom plate (1); a first ring body (5) is fixedly mounted on the first support frame (2) via a plurality of fixing rods (4); a second ring body (7) is rotatably mounted on the second support frame (3) via a plurality of slide rails (6); a pressure claw (8) is rotatably mounted on the first ring body (5); a pressing portion (9) is mounted at the end of the pressure claw (8); a plurality of slide grooves are provided on the second ring body (7); guide rails (10) are slidably mounted in the slide grooves; a connecting shaft (11) is slidably mounted in the guide rail (10); the connecting shaft (11) is rotatably connected to the middle portion of the pressure claw (8), thereby forming a structure for rotating the second ring body (7) to rotate the pressure claw (8).

2. A positioning device for internal cladding of a natural gas pipeline according to claim 1, characterized in that: The pressing portion (9) comprises a bracket (12), one end of which is rotatably mounted on the end of the pressing claw (8), and the other end of the bracket (12) is mounted with an arc-shaped pressing plate (13), the concave surface of the arc-shaped pressing plate (13) is provided with a friction layer, and a tension spring (14) is also provided on the inner side of the pressing claw (8), and the end of the tension spring (14) is connected to the convex surface of the arc-shaped pressing plate (13).

3. A positioning device for internal cladding of a natural gas pipeline according to claim 1, characterized in that: The pressing part (9) is a rotating roller whose peripheral side surface is a friction surface, and the pressing claw (8) is also provided with an adjusting motor for driving the rotating roller to rotate.

4. A positioning device for internal cladding of a natural gas pipeline according to any one of claims 1 to 3, characterized in that: Limiting protrusions are provided on both sides of the guide rail (10).

5. A positioning device for internal cladding of a natural gas pipeline according to claim 2, characterized in that: A fixing plate (15) is also provided at the lower end of the base plate (1), and the fixing plate (15) is fixedly connected to the base plate (1) via a connecting rod. A screw (16) is rotatably mounted and fixed on the base plate (1), and the end of the screw (16) points to the outer side surface of the second ring body (7).

6. A positioning device for internal cladding of a natural gas pipeline according to claim 5, characterized in that: The number of the lead screws (16) is greater than or equal to two.

7. A positioning device for internal cladding of a natural gas pipeline according to claim 2, characterized in that: An incomplete internal gear ring (17) is provided on the inner side surface of the second ring body (7), a driving motor is provided on the first support frame (2) or the second support frame (3), and a gear meshing with the incomplete internal gear ring (17) is installed on the rotating shaft of the driving motor.

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