Adjustable three-point straightening device

Abstract

The application discloses a three-point straightening device, which comprises a mounting rod, two first straightening mechanisms, at least one first straightening mechanism being movable relative to the mounting rod to change a first distance between the two first straightening mechanisms, a second straightening mechanism being connected with the mounting rod and located between the two first straightening mechanisms, and being movable relative to the mounting rod along a height direction to adjust a second distance between the second straightening mechanism and a target pipe placed on the first straightening mechanism. Each first straightening mechanism comprises a connecting piece connected with the mounting rod, a first front fork connected with the connecting piece, and a first straightening wheel connected with the first front fork. The first front fork comprises two first front fork components and a fixing piece connecting the two first front fork components. At least one first front fork component can change an assembly position on the fixing piece to change a third distance between the two first front fork components. In this way, the straightening device can be suitable for straightening pipe pieces of different specifications.

Description

Technical Field

[0001] This application relates to the field of pipeline processing technology, specifically to an adjustable three-point straightening device. Background Technology

[0002] In the manufacturing process of underwater umbilical cables, steel pipes are often twisted together with cables, fiber optic pipes, hydraulic pipes, etc., in multiple layers. The steel pipes wound on the reel will have an initial bending radius. If they are not straightened, the steel pipes cannot maintain straightness and will cause misalignment when twisted or cabled with other components (fiber optics, cables, hoses, etc.). Bending the steel pipes will directly and adversely affect the geometry of the finished umbilical cable, thereby affecting the overall structure of the cable.

[0003] When the steel pipe is wound on the coil, the neutral layer near the inner side is under compression, while the neutral layer near the outer side is under tension. Therefore, residual stress will still exist after the steel pipe is removed from the coil. Thus, eliminating residual stress is extremely important for the cable-making effect.

[0004] Currently, methods for eliminating residual stress are broadly categorized into heat treatment and mechanical straightening. Heat treatment is the most thorough way to eliminate residual stress, but it affects the properties of the steel pipe material, thus irreversibly impacting the lifespan of the umbilical cable. Mechanical straightening, on the other hand, is a fast, controllable, and most effective method that does not alter the internal properties of the material. Mechanical straightening devices are mainly classified as roller-type, three-point type, and multi-point type. However, the most efficient device in actual production is the three-point type.

[0005] Currently, the three-point straightening devices used in actual production are all fixed, typically consisting of two support points and one pressure point. However, these devices are mostly designed for pipe fittings of specific specifications (such as a specific outer diameter). When it is necessary to straighten pipe fittings of different specifications, it is often necessary to replace the entire device or key components (such as straightening wheels, clamps, etc.). This is not only cumbersome and time-consuming, increasing production preparation time and reducing efficiency, but also increasing the purchase and maintenance costs of the equipment.

[0006] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Utility Model Content

[0007] The purpose of this application is to provide an adjustable three-point straightening device with a reasonable structure, convenient adjustment, and applicable to various pipe fittings.

[0008] The purpose of this application is to achieve the following technical solution: An adjustable three-point straightening device suitable for multi-specification pipe fittings, comprising: Mounting rod; Two first straightening mechanisms are provided, each consisting of two first straightening components mounted at both ends of the mounting rod and configured for placement of the target pipe fitting; at least one first straightening mechanism is movable relative to the mounting rod to change the first distance between the two first straightening mechanisms; and The second straightening mechanism is connected to the mounting rod and located between the two first straightening mechanisms. The second straightening mechanism can move relative to the mounting rod in the height direction to adjust the second distance between the second straightening mechanism and the target pipe placed on the first straightening mechanism. Each of the first straightening mechanisms includes a connector connected to the mounting rod, a first fork connected to the connector, and a first straightening wheel connected to the first fork. The first fork includes two first fork components and a fixing member connecting the two first fork components. At least one first fork component can change its assembly position on the fixing member to change the third spacing between the two first fork components.

[0009] In one embodiment, the fastener has a plurality of first mounting portions, each of the first mounting portions being configured for assembling the first fork assembly to connect with the fastener; At least one of the first fork assemblies may be selectively mounted on either of the first assembly to change the third spacing between the two first fork assemblies.

[0010] In one embodiment, at least one of the first fork components is provided with a plurality of second assembly portions, the second assembly portions being configured to be able to be installed and engaged with the first assembly portions. One of the first assembly parts can be selectively assembled with any one of the second assembly parts to change the third spacing between the two first fork assemblies.

[0011] In one embodiment, the mounting rod has a plurality of first mounting portions, and the connector can be selectively connected to any one of the first mounting portions to change the first spacing between the two first straightening mechanisms.

[0012] In one embodiment, the connector has a plurality of second mounting portions that mate with the first mounting portion; One of the first mounting parts is fixedly connected to any one of the second mounting parts by a fastener to change the first distance between the two first straightening mechanisms.

[0013] In one embodiment, the connector includes a connector body connected to the fastener and a bent body connected to the connector body, and the second mounting portion is disposed on the bent body.

[0014] In one embodiment, the second straightening mechanism includes a rotary drive member rotatably connected to the mounting rod, a second front fork connected to the rotary drive member, and a second straightening wheel mounted on the second front fork.

[0015] In one embodiment, the second fork includes two second fork assemblies and an assembly connecting the two second fork assemblies; The assembly is provided with a plurality of third assembly parts, and at least one of the second fork components can be selectively connected to the third assembly part to change the fourth spacing between the two second fork components.

[0016] In one embodiment, at least one of the second fork components is provided with a plurality of fourth assembly parts that cooperate with the third assembly part for installation. One of the third assembly parts can be selectively assembled with any of the fourth assembly parts to change the fourth spacing between the two first fork assemblies.

[0017] In one embodiment, both the first straightening wheel and the second straightening wheel include a wheel body; The wheel has a groove that fits the target pipe, and the center of the groove has a shortest distance h between it and the outer end of the wheel. The ratio of the shortest distance h to the radius r of the groove is 1 / 8.

[0018] Compared with the prior art, this application has the following advantages: by setting an adjustable first straightening mechanism with an adjustable first spacing, an adjustable second straightening mechanism with an adjustable second spacing (height), and an adjustable third spacing first fork, the length, diameter, and straightening support position of the target pipe fitting are fully adjustable, which greatly improves the versatility of the adjustable three-point straightening device and can adapt to the straightening needs of various specifications of target pipe fittings; in addition, the entire adjustable three-point straightening device has a compact structure, flexible adjustment, and convenient operation, making it very suitable for straightening operations of small and medium batches and multiple varieties of target pipe fittings. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the adjustable three-point straightening device of this application; Figure 2 yes Figure 1 A schematic diagram of the structure of the mounting components; Figure 3 yes Figure 1 A partial structural diagram of the First Central Military Academy's directly affiliated institutions; Figure 4 yes Figure 3 A partial structural diagram; Figure 5 yesFigure 1 A partial structural diagram; Figure 6 yes Figure 1 A schematic diagram of the structure of the first or second straightening wheel in the middle.

[0020] Figure label: 1. Mounting rod; 11. First mounting part; 2. First straightening mechanism; 21. Connector; 211. Connector body; 212. Bending body; 213. Second mounting part; 22. First front fork; 221. First front fork assembly; 2211. Second assembly part; 222. Fixing member; 2221. First assembly part; 23. First straightening wheel; 231. Wheel body; 232. Groove; 3. Second straightening mechanism; 31. Rotary drive component; 32. Second front fork; 321. Second front fork assembly; 3211. Fourth assembly part; 322. Assembly part; 3221. Third assembly part; 33. Second straightening wheel; 4. Target fittings. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0022] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Please see Figures 1 to 6As shown, this application discloses an adjustable three-point straightening device, which can straighten the target pipe 4. The target pipe 4 is a steel pipe that has just been separated from the cable reel, and it will have a large bending deformation. Therefore, it is necessary to straighten the steel pipe on a large scale.

[0025] Specifically, the adjustable three-point straightening device includes a mounting rod 1, two first straightening mechanisms 2, and a second straightening mechanism 3. In this embodiment, the mounting rod 1 is elongated, and its length can be set according to the length of the specific target pipe fitting 4; this application does not impose a specific limitation.

[0026] In existing technologies, the connections between the first and second straightening mechanisms and the mounting rod are fixed, meaning they cannot be disassembled. However, in actual production, the target pipe fittings come in various specifications. When using existing straightening devices to straighten pipe fittings of different specifications, the straightening devices need to be frequently changed, resulting in significant production waste.

[0027] To address the aforementioned technical issues, in this embodiment, two first straightening mechanisms 2 are respectively installed at both ends of the mounting rod 1. The mounting rod 1 has multiple sets of first mounting portions 11 along its length; in this embodiment, these first mounting portions 11 are through mounting holes. At least one connecting piece 21 of the first straightening mechanism 2 (described in detail below) can be connected to different first mounting portions 11 to change its position on the mounting rod 1, thereby adjusting the first distance L1 between the two first straightening mechanisms 2. The other first straightening mechanism 2 can be fixed at one end, or both can be adjustable, thereby increasing flexibility and facilitating adaptation to target pipe fittings 4 of different specifications.

[0028] Each first straightening mechanism 2 includes a connector 21, a first fork 22, and a first straightening wheel 23. The connector 21 includes a connecting body 211 and a bending body 212, the bending body 212 having multiple second mounting portions 213 (also through holes). The connector 21 is fixed to the mounting rod 1 by passing bolts or other fasteners through selected first mounting portions 11 and second mounting portions 213 and locking them with nuts. The first fork 22 is connected to the connecting body 211 of the connector 21 via its fastener 222 (e.g., via bolts). The fastener 222 has multiple first mounting portions 2221 (e.g., threaded holes) arranged along its length. The two first fork components 221 each have multiple sets of second mounting portions 2211 (e.g., elongated holes or series holes). By passing a bolt through a selected second mounting portion 2211 on the first fork assembly 221 and screwing it into a selected first mounting portion 2221 on the retainer 222, the third distance L3 between the two first fork assemblies 221 can be changed to accommodate target tubes 4 of different diameters. The first straightening wheel 23 is mounted on the end of the first fork assembly 221 via a shaft.

[0029] The second straightening mechanism 3 is located between the two first straightening mechanisms 2. It includes a rotary drive component 31 (such as a hydraulic cylinder, bolt, drive motor, etc., which is not specifically limited here and depends on the actual situation). The rotary drive component 31 is threadedly connected to the middle of the mounting rod 1, and the end of the rotary drive component 31 is hinged to the mounting part 322 of the second front fork 32. The second front fork 32 consists of two second front fork components 321 and a mounting part 322. The mounting part 322 is provided with multiple third mounting parts 3221 (such as threaded holes). Each second front fork component 321 is provided with multiple sets of fourth mounting parts 3211 (such as elongated holes or series holes). By bolting the selected third mounting parts 3221 and fourth mounting parts 3211, the fourth distance L4 between the two second front fork components 321 can be adjusted. The second straightening wheel 33 is mounted on the end of the second front fork component 321 via a shaft. When the rotary drive 31 is activated, it will drive the entire second front fork 32 and the second straightening wheel 33 to swing up and down relative to the mounting rod 1 in the height direction, thereby changing the vertical distance (second gap) between the second straightening wheel 33 and the target tube 4 placed on the first straightening wheel 23, so as to achieve the clamping and straightening of the tube.

[0030] Both the first straightening wheel 23 and the second straightening wheel 33 have grooves 232 on their wheel bodies 231 for accommodating and guiding the target pipe 4. These grooves 232 are preferably arc-shaped grooves to fit the shape of the target pipe 4. The shortest distance h from the center of the groove 232 to the outermost circumferential surface of the wheel body 231 is 1 / 8 of the radius r of the groove 232 itself (for a V-shaped groove, this can refer to the radius of its theoretical enclosing circle). That is, h / r = 1 / 8. This design ensures that the groove depth is moderate, providing stable support for the pipe and preventing lateral movement of the target pipe 4 during pressing, while also ensuring that the wheel rim has sufficient thickness to withstand the straightening force.

[0031] The implementation process of the adjustable three-point alignment device in this embodiment is as follows: Based on the length of the target pipe fitting 4 to be straightened, adjust the position of at least one first straightening mechanism 2 on the mounting rod 1 to determine a suitable support point distance (first spacing L1).

[0032] According to the diameter of the target tube 4, the third distance L3 between the first fork components 221 of the two first straightening mechanisms 2 is adjusted to match the diameter of the target tube 4, so that the two first straightening wheels 23 can stably support the tube.

[0033] Similarly, based on the diameter of the target tube 4, the fourth distance L4 between the second front fork components 321 of the second straightening mechanism 3 is adjusted so that the second straightening wheel 33 is also adapted to the diameter of the target tube 4, thereby enabling it to make stable contact with the target tube 4.

[0034] Place the target pipe 4 on the two first straightening rollers 23.

[0035] The rotary drive 31 is activated, driving the second straightening wheel 33 to move downwards, contacting and applying pressure to the target pipe 4. By controlling the pressure magnitude and application time, the bent portion of the target pipe 4 is straightened.

[0036] After straightening is completed, the rotary drive component 31 retracts, the second straightening wheel 33 is lifted, and the straightened target pipe component 4 is removed.

[0037] In summary, by setting up a first straightening mechanism 2 with an adjustable first spacing, a second straightening mechanism 3 with an adjustable second spacing (height), and a first front fork 22 with an adjustable third spacing, the length, diameter, and straightening support position of the target pipe fitting are fully adjustable, greatly improving the versatility of the adjustable three-point straightening device and enabling it to adapt to the straightening needs of various specifications of target pipe fittings. Furthermore, the entire adjustable three-point straightening device has a compact structure, flexible adjustment, and convenient operation, making it very suitable for straightening operations in the production of small to medium batches of various types of target pipe fittings.

[0038] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An adjustable three-point straightening device suitable for multi-specification pipe fittings, characterized in that, include: Mounting rod; Two first straightening mechanisms are provided, each installed at one end of the mounting rod and configured to accommodate the target pipe fitting; at least one first straightening mechanism is movable relative to the mounting rod to change the first distance between the two first straightening mechanisms. as well as The second straightening mechanism is connected to the mounting rod and located between the two first straightening mechanisms. The second straightening mechanism can move relative to the mounting rod in the height direction to adjust the second distance between the second straightening mechanism and the target pipe placed on the first straightening mechanism. Each of the first straightening mechanisms includes a connector connected to the mounting rod, a first fork connected to the connector, and a first straightening wheel connected to the first fork. The first fork includes two first fork components and a fixing member connecting the two first fork components. At least one first fork component can change its assembly position on the fixing member to change the third spacing between the two first fork components.

2. The adjustable three-point straightening device as described in claim 1, characterized in that, The fastener has a plurality of first assembly portions, each of which is configured to assemble the first fork assembly to connect with the fastener. At least one of the first fork assemblies may be selectively mounted on either of the first assembly to change the third spacing between the two first fork assemblies.

3. The adjustable three-point straightening device as described in claim 2, characterized in that, At least one of the first fork components is provided with a plurality of second assembly portions, the second assembly portions being configured to be installed and engaged with the first assembly portions; One of the first assembly parts can be selectively assembled with any one of the second assembly parts to change the third spacing between the two first fork assemblies.

4. The adjustable three-point straightening device as described in any one of claims 1 to 3, characterized in that, The mounting rod has a plurality of first mounting portions, and the connector can be selectively connected to any one of the first mounting portions to change the first distance between the two first straightening mechanisms.

5. The adjustable three-point straightening device as described in claim 4, characterized in that, The connector has a plurality of second mounting portions that cooperate with the first mounting portion for installation. One of the first mounting parts is fixedly connected to any one of the second mounting parts by a fastener to change the first distance between the two first straightening mechanisms.

6. The adjustable three-point straightening device as described in claim 5, characterized in that, The connector includes a connector body connected to the fastener and a bent body connected to the connector body, and the second mounting part is disposed on the bent body.

7. The adjustable three-point straightening device as described in any one of claims 1 to 3, characterized in that, The second straightening mechanism includes a rotary drive component rotatably connected to the mounting rod, a second front fork connected to the rotary drive component, and a second straightening wheel mounted on the second front fork.

8. The adjustable three-point straightening device as described in claim 7, characterized in that, The second fork includes two second fork assemblies and an assembly connecting the two second fork assemblies; The assembly is provided with a plurality of third assembly parts, and at least one of the second fork components can be selectively connected to the third assembly part to change the fourth spacing between the two second fork components.

9. The adjustable three-point straightening device as described in claim 8, characterized in that, At least one of the second fork components is provided with a plurality of fourth assembly parts that cooperate with and are installed with the third assembly part; One of the third assembly parts can be selectively assembled with any of the fourth assembly parts to change the fourth spacing between the two first fork assemblies.

10. The adjustable three-point straightening device as described in claim 7, characterized in that, Both the first straight wheel and the second straight wheel include a wheel body; The wheel has a groove that fits the target pipe, and the center of the groove has a shortest distance h between it and the outer end of the wheel. The ratio of the shortest distance h to the radius r of the groove is 1 / 8.

Images