A jointing device for a steel tube tower

Abstract

The utility model relates to steel structure processing equipment technical field discloses a kind of jointing devices of steel pipe tower, the clamping assembly of this device, through single hydraulic rod is connected through connecting plate and third connecting block, drive first rotating ring and second rotating ring synchronous rotation, to thereby linkage multiple clamping plates hinged on fixed ring synchronous inwardly tighten, each clamping plate end is equipped with self-adapting component, this component contains first and second rotating plate by third rotating shaft rotation connection and can relatively slide, so that final clamping claw can self-adapting local out-of-roundness of tower wall.The utility model effectively solves the technical problem of uneven clamping force and unable to adapt to workpiece deviation, with the significant advantages of simplified structure, reliable operation, uniform synchronous clamping force, high jointing precision.

Description

Technical Field

[0001] This utility model relates to the field of steel structure processing equipment technology, and in particular to a jointing device for steel pipe towers. Background Technology

[0002] Steel pipe towers are widely used in power transmission, communication base stations, and wind power generation due to their structural stability, high load-bearing capacity, and aesthetically pleasing appearance. During the manufacturing process, thick steel plates are typically rolled into conical or cylindrical tower sections, forming a longitudinal seam at the opening. Before the final longitudinal weld, this seam must be precisely closed using external force; this process is called "seam closing." The quality of the seam closing directly determines the success or failure of subsequent welding and the structural precision and strength of the entire tower section.

[0003] In current production practices, the jointing operation is typically accomplished by arranging multiple independent jacks or hydraulic clamps around the circumference of the steel pipe tower segment. However, this method has revealed several shortcomings in practical applications. First, because the multiple drive sources are independent of each other, even with a synchronous control system, it is extremely difficult to ensure that the output force, drive speed, and action time of each clamping point are completely consistent. This inherent asynchrony in drive leads to uneven distribution of circumferential pressure applied to the steel pipe tower segment. Some areas experience excessive stress, while others experience insufficient stress, which can easily cause misalignment and warping at the edges of the joint, and even deformation of the entire tower segment's pipe wall, severely affecting the accuracy of the jointing.

[0004] Furthermore, rolled steel pipe tower segments are not ideal, perfect cylinders or cones; their surfaces inevitably exhibit localized dimensional deviations and non-roundness. Traditional clamps are typically rigid structures whose clamping surfaces cannot adapt to such irregular surfaces, only contacting a few protruding points on the tower wall during clamping. This not only concentrates the clamping force at these points, easily causing indentations or damage to the tower wall, but more importantly, it fails to apply effective pressure to concave or flat areas, resulting in joints that cannot close evenly and tightly along their entire length.

[0005] In addition, the steel pipe tower segments are huge in size and incredibly heavy, making the loading and positioning process before the jointing operation extremely difficult. It requires large lifting equipment and manual assistance for repeated adjustments, which is not only time-consuming and labor-intensive with low production efficiency, but also carries the risk of damaging the workpiece during handling and alignment. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a jointing device for steel pipe towers, which aims to improve the problems existing in the jointing device of steel pipe towers, such as uneven circumferential clamping force and difficulty in synchronizing actions due to the use of multi-point independent drive, and the inability of rigid clamps to adapt to local non-roundness of the tower wall, resulting in low jointing accuracy and easy damage to the workpiece.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a jointing device for steel pipe towers, comprising: a frame, a base, and a clamping assembly; the clamping assembly includes a fixing ring, a hydraulic rod, a first rotating ring, a second rotating ring, a clamping plate, and an adaptive assembly.

[0008] The hydraulic rod is connected to the first rotating ring via a connecting plate, and the first rotating ring and the second rotating ring are linked together via a third connecting block.

[0009] Furthermore, the clamping plate is hinged to the fixed ring via a second rotating shaft, and connected to the first rotating ring and the second rotating ring via a first rotating shaft; the adaptive component is disposed at the end of the clamping plate, and includes a fixed plate, a first rotating plate, a second rotating plate and a clamping claw fixed to the clamping plate. The first rotating plate and the second rotating plate are rotatably connected via a third rotating shaft and are relatively slidably disposed within the fixed plate. The clamping claw is finally disposed on the second rotating plate.

[0010] Preferably, a roller is provided on the upper part of the frame, and the roller is mounted on the frame via a first connecting block and a second connecting block.

[0011] Preferably, a sliding sleeve is fitted onto the first rotating shaft, and the sliding sleeve is connected to the clamping plate.

[0012] Preferably, the connecting plate is a linkage structure, with one end hinged to the telescopic end of the hydraulic rod and the other end hinged to the outer edge of the first rotating ring.

[0013] Preferably, the third connecting block is a rigid connecting rod, with its two ends hinged to the first rotating ring and the second rotating ring, respectively.

[0014] Preferably, the gripping claws are covered with a flexible rubber layer on the outer wall of the steel pipe tower.

[0015] Preferably, the frame is supported on the base by columns.

[0016] Preferably, as a specific embodiment, the first rotating plate can slide on the inner wall of the fixed plate, and the second rotating plate can slide on the inner wall of the first rotating plate.

[0017] This utility model has the following beneficial effects: In this invention, a ring-shaped synchronous transmission mechanism driven by a single hydraulic rod is set up. This mechanism links multiple clamping plates to tighten inward synchronously, which solves the problems of complex control, uneven clamping force, and asynchronous action caused by multi-point independent drive in the prior art. It achieves the effects of simplifying the drive source, ensuring uniform and consistent ring clamping force, and improving the overall stability and reliability of the device.

[0018] In this invention, by setting an adaptive component at the end of each clamping plate, the component has multiple sliding and rotating plates inside to connect the final clamping claws. This solves the problem that existing jointing devices cannot fully fit when facing local non-roundness or dimensional deviations of steel pipe tower segments, resulting in low clamping accuracy and easy warping or misalignment of the pipe wall. It achieves the effect of enabling the clamping claws to adaptively adjust their posture and fit tightly against the tower wall, thereby significantly improving the jointing accuracy and quality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a jointing device for a steel pipe tower proposed in this utility model; Figure 2 This is a schematic diagram of the fixing ring part of the jointing device for a steel pipe tower proposed in this utility model; Figure 3 This is a schematic diagram of the clamping plate portion of the jointing device for a steel pipe tower proposed in this utility model. Figure 4 This is a schematic diagram of the clamping claw part of the jointing device for a steel pipe tower proposed in this utility model.

[0020] Legend: 1. Frame; 2. Roller; 3. First connecting block; 4. Base; 5. Clamping assembly; 501. Hydraulic rod; 502. Connecting plate; 503. Fixing ring; 504. First rotating ring; 505. Clamping plate; 506. First rotating shaft; 507. Second rotating shaft; 508. Second rotating ring; 509. Sliding sleeve; 510. Third connecting block; 6. Second connecting block; 7. Column; 8. Adaptive assembly; 801. Fixing plate; 802. Third rotating shaft; 803. First rotating plate; 804. Second rotating plate; 805. Clamping claw. Detailed Implementation

[0021] 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.

[0022] Please refer to Figures 1 to 4 This utility model provides a jointing device for steel pipe towers, which aims to solve the technical problems of uneven force, difficult positioning, and easy damage to the tower wall when jointing steel pipe towers in the prior art.

[0023] like Figure 1 As shown, the jointing device of the steel pipe tower includes a frame 1, a base 4, and a clamping assembly 5 set on the frame 1. The frame 1 is supported on the base 4 by a column 7. A roller 2 is set on the upper part of the frame 1. The roller 2 is installed on the frame 1 through a first connecting block 3 and a second connecting block 6.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3 The clamping assembly 5 includes a fixed ring 503, a hydraulic rod 501, a first rotating ring 504, a second rotating ring 508, and clamping plates 505 evenly distributed around the circumference. The hydraulic rod 501 is connected to the first rotating ring 504 through a connecting plate 502. Specifically, the connecting plate 502 is a connecting rod structure, with one end hinged to the telescopic end of the hydraulic rod 501 and the other end hinged to the outer edge of the first rotating ring 504. The first rotating ring 504 and the second rotating ring 508 are connected through a third connecting block 510. The third connecting block 510 is a rigid connecting rod, with both ends hinged to the first rotating ring 504 and the second rotating ring 508, respectively. Each clamping plate 505 is hinged to the fixed ring 503 through a second rotating shaft 507 and connected to the first rotating ring 504 and the second rotating ring 508 through a first rotating shaft 506. A sliding sleeve 509 is sleeved on the first rotating shaft 506, and the sliding sleeve 509 is connected to the clamping plate 505.

[0025] Please refer to Figure 3 and Figure 4 Each clamping plate 505 has an adaptive component 8 at its end. The adaptive component 8 includes a fixed plate 801, a first rotating plate 803, a second rotating plate 804, and a clamping claw 805. The fixed plate 801 is fixedly connected to the end of the clamping plate 505. The first rotating plate 803 is slidably disposed on the inner wall of the fixed plate 801. The second rotating plate 804 is slidably disposed on the inner wall of the first rotating plate 803. The first rotating plate 803 and the second rotating plate 804 are rotatably connected through a third rotating shaft 802. The clamping claw 805 is disposed on the second rotating plate 804, and the outer wall of the clamping claw 805 facing the center of the steel pipe tower is covered with a flexible rubber layer.

[0026] As a preferred embodiment of this utility model, the roller 2 enables the heavy steel pipe tower segment to move and position itself on the frame 1 in a labor-saving and stable manner by using rolling friction instead of sliding friction; the first connecting block 3 and the second connecting block 6 provide a stable mounting base for the roller 2.

[0027] As a preferred embodiment of this utility model, the sliding sleeve 509 allows the first rotating shaft 506 to slide within a small range within the pre-set connection hole of the clamping plate 505 when the first rotating shaft 506 drives the clamping plate 505 to swing, thereby compensating for the geometric position deviation generated during the movement of the mechanism and ensuring the smoothness of the transmission.

[0028] In a preferred embodiment of this utility model, the connecting plate 502 adopts a linkage structure, which can efficiently convert the linear motion output by the hydraulic rod 501 into the rotational motion of the first rotating ring 504.

[0029] In a preferred embodiment of this utility model, the third connecting block 510 serves as a rigid connecting rod, ensuring that the rotation angle and speed of the first rotating ring 504 and the second rotating ring 508 remain consistent, thereby achieving synchronous linkage of the entire ring transmission mechanism.

[0030] As a preferred embodiment of this utility model, the flexible rubber layer increases the static friction coefficient between the clamping claw 805 and the outer wall of the steel pipe tower, preventing relative slippage under huge clamping force. On the other hand, it plays a buffering role, preventing the hard clamping claw 805 from causing indentations or scratches on the surface of the steel pipe tower.

[0031] In a preferred embodiment of this utility model, the column 7 raises the working frame 1 and clamping assembly 5 of the entire device to a suitable operating height and provides stable vertical support for the entire device.

[0032] In a preferred embodiment of this utility model, the sliding of the first rotating plate 803 on the inner wall of the fixed plate 801 and the sliding of the second rotating plate 804 on the inner wall of the first rotating plate 803 together provide the clamping claw 805 with two dimensions of translational freedom, enabling it to adapt to the radial dimension deviation of the steel pipe tower segment.

[0033] Working principle: When a steel pipe tower needs to be joined, the steel pipe tower segment to be joined is first placed on the roller 2 on the frame 1. Through the rolling support of the roller 2, the steel pipe tower segment can be smoothly moved along its axial direction into the working area of ​​the clamping assembly 5. After the steel pipe tower segment is positioned, the hydraulic rod 501 is activated. The extension and retraction of the hydraulic rod 501 is transmitted to the first rotating ring 504 through the connecting plate 502, causing it to rotate. Since the first rotating ring 504 is rigidly connected to the second rotating ring 508 through the third connecting block 510, the second rotating ring 508 rotates synchronously with the first rotating ring 504. With the synchronous rotation of the first rotating ring 504 and the second rotating ring 508, the first rotating shaft 506 drives all the circumferentially distributed clamping plates 505 to the second rotating shaft that is hinged to the fixed ring 503. Using 507 as the fulcrum, the clamping plates tighten inward synchronously. During the tightening process, the clamping claws 805 at the ends of the clamping plates 505 gradually contact and press against the outer wall of the steel pipe tower. At this time, the adaptive component 8 begins to function. The sliding of the first rotating plate 803 on the inner wall of the fixed plate 801, the sliding of the second rotating plate 804 on the inner wall of the first rotating plate 803, and the rotational cooperation between the two through the third rotating shaft 802, together enable the clamping claws 805 to automatically adjust their own posture to closely fit the local non-roundness or dimensional deviation of the outer wall of the steel pipe tower. At the same time, the flexible rubber layer on its surface increases the friction while protecting the tower wall from damage. Finally, driven by a single hydraulic source, the device applies a uniform and adaptive radial clamping force to the steel pipe tower segment, thereby accurately closing its longitudinal joint and preparing for subsequent welding.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A jointing device for a steel pipe tower, comprising a frame (1), a base (4), and a clamping assembly (5) disposed on the frame (1); characterized in that, The clamping assembly (5) includes a fixed ring (503), a hydraulic rod (501), a first rotating ring (504), a second rotating ring (508), and circumferentially distributed clamping plates (505). The hydraulic rod (501) is connected to the first rotating ring (504) via a connecting plate (502); The first rotating ring (504) and the second rotating ring (508) are connected by a third connecting block (510); The clamping plate (505) is hinged to the fixing ring (503) via the second rotating shaft (507), and is connected to the first rotating ring (504) and the second rotating ring (508) via the first rotating shaft (506); An adaptive component (8) is provided at the end of the clamping plate (505). The adaptive component (8) includes a fixed plate (801), a first rotating plate (803), a second rotating plate (804), and a clamping claw (805) fixed to the clamping plate (505). The first rotating plate (803) is slidably disposed within the fixed plate (801), and the second rotating plate (804) is slidably disposed within the first rotating plate (803). The first rotating plate (803) and the second rotating plate (804) are rotatably connected by a third rotating shaft (802). The clamping claw (805) is disposed on the second rotating plate (804).

2. The jointing device for a steel pipe tower according to claim 1, characterized in that: The upper part of the frame (1) is provided with a roller (2), which is mounted on the frame (1) through a first connecting block (3) and a second connecting block (6).

3. The jointing device for a steel pipe tower according to claim 1, characterized in that: A sliding sleeve (509) is fitted on the first rotating shaft (506), and the sliding sleeve (509) is connected to the clamping plate (505).

4. The jointing device for a steel pipe tower according to claim 1, characterized in that: The connecting plate (502) is a linkage structure, with one end hinged to the telescopic end of the hydraulic rod (501) and the other end hinged to the outer edge of the first rotating ring (504).

5. The jointing device for a steel pipe tower according to claim 1, characterized in that: The third connecting block (510) is a rigid connecting rod, with its two ends hinged to the first rotating ring (504) and the second rotating ring (508) respectively.

6. The jointing device for a steel pipe tower according to claim 1, characterized in that: The clamping claw (805) is covered with a flexible rubber layer on the outer wall of the steel pipe tower.

7. The jointing device for a steel pipe tower according to claim 1, characterized in that: The frame (1) is supported on the base (4) by the column (7).

8. The jointing device for a steel pipe tower according to claim 1, characterized in that: The first rotating plate (803) can slide on the inner wall of the fixed plate (801), and the second rotating plate (804) can slide on the inner wall of the first rotating plate (803).

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