A bracket for welding oil pipelines
By designing an adjustable clamp and movable seat for oil pipeline welding, the problem of existing clamps being unable to adapt to different pipe sizes has been solved, enabling flexible clamping and alignment of oil pipelines and improving welding efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA PETROLEUM FIRST CONSTR CORP
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-31
AI Technical Summary
Existing oil pipeline welding fixtures cannot be adapted to pipelines of different sizes, making welding and fixing difficult.
A bracket for welding oil pipelines was designed, which adopts an adjustable clamp and movable seat structure. It can clamp and align pipelines of different diameters and lengths through a V-shaped clamping groove and threaded rod system, and can be precisely positioned and fixed with the help of a motor drive.
It enables flexible clamping and alignment of oil pipelines of different diameters and lengths, improves welding efficiency, and avoids the impact of pipeline rotation on welding quality.
Smart Images

Figure CN224575037U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil pipeline welding technology, specifically a bracket for oil pipeline welding. Background Technology
[0002] During the transportation of oil, it is transported through oil pipelines, which are assembled from sections of pipe. During assembly, they are usually fixed by welding. Before welding, the two sections of oil pipeline need to be fixed with clamps to facilitate the subsequent welding operation.
[0003] A search revealed a patent document with publication number CN 222711347 U, which discloses a clamp for welding oil pipelines. The clamp includes a base and an oil pipeline body. Two mounting slots are respectively formed on the top side of the base, and mounting seats are movably installed in each slot. A machine chamber is formed inside the base, and the machine chamber is equipped with a proximity and translation drive mechanism for the two mounting seats. A first semi-circular pipe seat and a second semi-circular pipe seat are respectively fixedly installed on the top side of the mounting seats. This invention allows workers to rotate the clamped oil pipeline body between supporting rubber rollers, multiple first rubber rollers, multiple second rubber rollers, and multiple third rubber rollers by sequentially adjusting two insert plates to disengage from their corresponding slots. This enables the oil pipeline body to be flipped and rotated without needing to release the clamped oil pipeline body. The method described in this invention is very simple and fast, improving the efficiency of welding oil pipeline bodies.
[0004] In the aforementioned prior art, although the pipe can be rotated to facilitate welding, the fixed inner diameter of the semi-circular pipe seat makes it impossible to adapt to pipes of different sizes for welding clamping. Utility Model Content
[0005] The purpose of this utility model is to provide a bracket for welding oil pipelines to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A bracket for welding oil pipelines includes a base plate. Two movable seats are symmetrically arranged above the base plate. The top of each movable seat has an annular groove. A sliding ring adapted to each sliding groove is slidably connected to the groove. A support plate is fixedly connected to the inner side of each sliding ring. A placement notch is opened on both the support plate and the sliding ring. A support seat is symmetrically arranged on both sides of the placement notch and fixedly connected to the support plate. A clamp is symmetrically arranged between the support seats and adapted to each other. A V-shaped clamp groove is opened on each clamp. A guide rod is symmetrically slidably connected through the support seat. The guide rod is fixedly connected to the corresponding clamp. A first bidirectional threaded rod is rotatably connected to the support seats. The clamps are respectively threaded onto the positive and negative threads of the first bidirectional threaded rod. A rotating handle is fixedly connected to the top of the first bidirectional threaded rod.
[0008] As a further embodiment of this utility model: the movable seat is threadedly connected to the annular sliding groove, the threaded shank abuts against the outer wall of the sliding ring, the movable seat is provided with a notch for the installation of the threaded shank, and the notch is provided with a threaded hole for the threaded connection of the threaded shank.
[0009] As a further embodiment of this utility model: a slide rail is fixedly connected to the top surface of the base plate, a movable seat is slidably connected to the slide rail, a second bidirectional threaded rod is rotatably connected to the top surface of the base plate, the movable seat is threadedly connected to the positive and negative threads of the second bidirectional threaded rod respectively, a first motor is fixedly installed on the base plate corresponding to the end of the second bidirectional threaded rod, and the output end of the first motor is fixedly connected to the second bidirectional threaded rod.
[0010] As a further improvement of this utility model: two mounting seats are also slidably connected on the slide rail, the mounting seats corresponding to the movable seat and threadedly connected to the corresponding threads of the second bidirectional threaded rod.
[0011] As a further embodiment of this utility model: a second motor is fixedly installed on the mounting base, and a drive screw is fixedly connected to the output end of the second motor, with the drive screw rotatably mounted to the movable base.
[0012] As a further embodiment of this utility model: the drive screw is threadedly connected to an end seat, the end seat is slidably connected to the slide rail, and the center of the corresponding sliding ring of the end seat is rotatably connected to a positioning cone.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model uses a rotating handle to rotate the first bidirectional threaded rod, which drives the clamps to move closer together under the guidance of the guide rod. This allows the oil pipeline to be clamped and fixed through the V-shaped clamping groove. The spacing between the clamps is adjustable, making it convenient to clamp and fix oil pipelines of different diameters.
[0015] 2. This utility model locks the sliding ring by rotating the threaded shank, thus limiting the rotation and preventing the oil pipeline from rotating during welding, which would affect the welding process.
[0016] 3. This utility model uses a first motor to drive the second bidirectional threaded rod to rotate, which in turn drives the movable seat to slide along the slide rail, thereby causing the two clamped oil pipes to move closer together and align.
[0017] 4. This utility model can support and position the tail end of an oil pipeline by using an end seat in conjunction with a positioning cone. At the same time, the second motor drives the drive screw to rotate, which can drive the end seat to slide along the slide rail, thereby controlling the distance between the end seat and the moving seat, making it convenient to adapt to the support and positioning of the tail end of oil pipelines of different lengths. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a bracket for welding oil pipelines.
[0019] Figure 2 This is a diagram illustrating the movable seat in a welding bracket for oil pipelines.
[0020] Figure 3 This is a diagram illustrating the connection of a mid-end seat in a welding bracket for oil pipelines.
[0021] In the diagram: 1. Base plate; 2. Movable seat; 3. Annular groove; 4. Sliding ring; 5. Support plate; 6. Placement notch; 7. Support; 8. Clamp; 9. V-shaped clamp; 10. Guide rod; 11. First bidirectional threaded rod; 12. Threaded shank; 13. Slide rail; 14. Second bidirectional threaded rod; 15. First motor; 16. Mounting seat; 17. Second motor; 18. Drive screw; 19. End seat; 20. Positioning cone. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-3In this embodiment of the utility model, a bracket for welding oil pipelines includes a base plate 1. Two movable seats 2 are symmetrically arranged above the base plate 1. The top of the movable seat 2 is provided with an annular sliding groove 3. Sliding rings 4 that are adapted to each sliding groove 3 are slidably connected in the annular sliding groove 3. A support plate 5 is fixedly connected to the inner side of the sliding ring 4. A placement notch 6 is opened on both the support plate 5 and the sliding ring 4. The sliding ring 4 is provided with an anti-slip protrusion at the placement notch 6 to prevent slippage. Support seats 7 are symmetrically arranged on both sides of the placement notch 6 and fixedly connected to the support plate 5. Clamping seats 8 that are adapted to each other are symmetrically arranged between the support seats 7. V-shaped clamping grooves 9 are opened on each clamping seat 8. Guide rods 10 are symmetrically slidably connected through the support seats 7. The guide rods 10 are fixedly connected to the corresponding clamping seats 8. A first bidirectional threaded rod 11 is rotatably connected to the support seats 7. The clamping seats 8 are respectively threaded to the positive and negative threads of the first bidirectional threaded rod 11. A rotating handle is fixedly connected to the top of the first bidirectional threaded rod 11.
[0024] The first bidirectional threaded rod 11 is rotated by the handle, and under the guidance of the guide rod 10, the clamps 8 are driven to move closer to each other, thereby clamping and fixing the oil pipeline through the V-shaped clamping groove 9. The spacing of the clamps 8 is adjustable, so as to facilitate the clamping and fixing of oil pipelines of different diameters.
[0025] The movable seat 2 is threadedly connected to the annular sliding groove 3 with a threaded shank 12. The threaded shank 12 abuts against the outer wall of the sliding ring 4. The movable seat 2 is provided with a notch for installing the threaded shank 12, and the notch is provided with a threaded hole for threaded connection of the threaded shank 12.
[0026] By rotating the threaded shank 12, the sliding ring 4 can be locked, thus limiting the rotation and preventing the oil pipeline from rotating during welding, which would affect the welding process.
[0027] A slide rail 13 is fixedly connected to the top surface of the base plate 1 in parallel. The movable seat 2 is slidably connected to the slide rail 13. A second bidirectional threaded rod 14 is rotatably connected to the top surface of the base plate 1. The movable seat 2 is threadedly connected to the positive and negative threads of the second bidirectional threaded rod 14 respectively. A first motor 15 is fixedly installed on the base plate 1 corresponding to the end of the second bidirectional threaded rod 14. The output end of the first motor 15 is fixedly connected to the second bidirectional threaded rod 14.
[0028] The first motor 15 drives the second bidirectional threaded rod 14 to rotate, thereby driving the movable seat 2 to slide along the slide rail 13, which in turn causes the two clamped oil pipes to move closer together and align.
[0029] Two mounting seats 16 are also slidably connected to the slide rail 13. The mounting seats 16 correspond to the movable seat 2 and are threadedly connected to the corresponding threads of the second bidirectional threaded rod 14. The mounting seats 16 can slide along the slide rail 13 by being driven by the second bidirectional threaded rod 14, thereby achieving a synchronous movement effect with the movable seat 2.
[0030] A second motor 17 is fixedly mounted on the mounting base 16. A drive screw 18 is fixedly connected to the output end of the second motor 17. The drive screw 18 is rotatably mounted with the movable base 2.
[0031] The drive screw 18 is threadedly connected to an end seat 19, which is slidably connected to the slide rail 13. The center of the corresponding sliding ring 4 of the end seat 19 is rotatably connected to a positioning cone 20.
[0032] The end seat 19, in conjunction with the positioning cone 20, can support and position the tail end of the oil pipeline. At the same time, the second motor 17 drives the drive screw 18 to rotate, which can drive the end seat 19 to slide along the slide rail 13, thereby controlling the distance between the end seat 19 and the moving seat 2, making it convenient to adapt to the support and positioning of the tail end of oil pipelines of different lengths.
[0033] Both the first motor 15 and the second motor 17 are externally connected to a power source and a switch.
[0034] The working principle of this utility model is as follows:
[0035] In use, the position of the end seat 19 is adjusted according to the length of the oil pipeline. At this time, the second motor 17 is started to drive the drive screw 18 to rotate, thereby driving the end seat 19 to move along the slide rail 13 and controlling the distance between the end seat 19 and the moving seat 2. At this time, the oil pipeline is placed in the corresponding notch 6 so that the tail end of the oil pipeline abuts against the positioning cone 20. By rotating the first bidirectional threaded rod 11 with the handle, the clamping seats 8 are driven to move closer together under the guidance of the guide rod 10, thereby clamping and fixing the oil pipeline through the V-shaped clamping groove 9. At this time, the second bidirectional threaded rod 14 is further driven to rotate by the first motor 15. During the rotation of the second bidirectional threaded rod 14, the two moving seats 2 and the two mounting seats 16 can be driven to move along the slide rail 13, thereby driving the clamped and fixed oil pipeline to move closer together, which facilitates welding. During welding, the threaded handle 12 can be loosened, so that the sliding ring 4 can slide in the annular sliding groove 3 to realize the rotation of the oil pipeline and the switching between the front and rear sides, which facilitates comprehensive welding.
[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A carriage for welding of oil pipes comprising a base plate (1), characterised in that: Two movable seats (2) are symmetrically arranged above the base plate (1). The top of the movable seat (2) is provided with an annular sliding groove (3). A sliding ring (4) adapted to it is slidably connected in the annular sliding groove (3). A support plate (5) is fixedly connected to the inner side of the sliding ring (4). A placement notch (6) is opened on both the support plate (5) and the sliding ring (4). A support seat (7) is symmetrically arranged on both sides of the placement notch (6) and fixedly connected to the support plate (5). A clamp (8) adapted to each other is symmetrically arranged between the support seats (7). A V-shaped clamp groove (9) is opened on each clamp (8). A guide rod (10) is symmetrically slidably connected through the support seat (7). The guide rod (10) is fixedly connected to the corresponding clamp (8). A first bidirectional threaded rod (11) is rotatably connected to the support seat (7). The clamp (8) is threadedly connected to the positive and negative threads of the first bidirectional threaded rod (11). A rotating handle is fixedly connected to the top of the first bidirectional threaded rod (11).
2. A carrier for welding oil pipes according to claim 1, characterized in that: The movable seat (2) is threadedly connected to the annular sliding groove (3) with a threaded shank (12). The threaded shank (12) abuts against the outer wall of the sliding ring (4). The movable seat (2) has a notch for installing the threaded shank (12), and the notch has a threaded hole for threaded connection of the threaded shank (12).
3. A carrier for welding oil pipes according to claim 1, characterized in that: The top surface of the base plate (1) is fixedly connected to a slide rail (13), and the movable seat (2) is slidably connected to the slide rail (13). The top surface of the base plate (1) is rotatably connected to a second bidirectional threaded rod (14). The movable seat (2) is threadedly connected to the positive and negative threads of the second bidirectional threaded rod (14). A first motor (15) is fixedly installed on the base plate (1) at the end corresponding to the second bidirectional threaded rod (14). The output end of the first motor (15) is fixedly connected to the second bidirectional threaded rod (14).
4. A carrier for welding oil pipes according to claim 3, characterized in that: Two mounting seats (16) are also slidably connected on the slide rail (13). The mounting seats (16) correspond to the movable seat (2) and are threadedly connected to the corresponding threads of the second bidirectional threaded rod (14).
5. A carrier for welding oil pipes according to claim 4, characterized in that: A second motor (17) is fixedly installed on the mounting base (16). The output end of the second motor (17) is fixedly connected to a drive screw (18). The drive screw (18) is rotatably installed with the movable base (2).
6. A carrier for welding oil pipes according to claim 5, characterized in that: The drive screw (18) is threaded with an end seat (19), which is slidably connected to the slide rail (13). The center of the corresponding sliding ring (4) of the end seat (19) is rotatably connected to a positioning cone (20).