Large-diameter rolled pipe body butt joint clamp

Abstract

The utility model discloses a large-diameter rolled pipe body butt joint clamp which comprises a portal frame, a fixing mechanism used for clamping and fixing a pipeline for butt joint is arranged at the upper end of the portal frame, the fixing mechanism comprises an electric hoist, a lifting rope, a lifting hook, a fixing plate, a connecting plate, a hydraulic cylinder, a clamp and a transmission rod, and the electric hoist is fixedly arranged at the upper end of the portal frame. A lifting rope is wound on the surface of a winding roller of the electric hoist, a lifting hook is fixedly arranged at the lower end of the lifting rope, a fixing plate is fixedly arranged at the lower end of the lifting hook, a connecting plate is arranged at the lower end of the fixing plate, and a hydraulic cylinder is fixedly arranged between the fixing plate and the connecting plate; and clamps are movably arranged on the two sides of the surface of the connecting plate through rotating shafts correspondingly, and transmission rods are movably arranged on the two sides of the fixing plate through rotating shafts correspondingly. The pipeline welding fixture is good in use effect, and can clamp and fix pipelines needing to be welded, so that the stability between the pipelines during initial welding can be ensured, and the welding quality can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of pipe body docking fixture technology, specifically a large-diameter rolled pipe body docking fixture. Background Technology

[0002] Large-diameter rolled pipes are pipes made by bending steel plates into a tubular shape and welding them together using a plate rolling process. They are widely used in water conservancy, energy, chemical and other fields.

[0003] When connecting large-diameter rolled pipes, it is often necessary to use lifting equipment to hoist the pipes and then slowly move them to align them, ensuring that the two sections of pipe to be connected are aligned. Finally, the hoisted pipes and the pipes to be installed are connected by welding or flange connection. In the existing technology, the two pipes are slowly aligned by hoisting. For pipes with flange connections, the pipes are simply inserted into the flange and they will naturally align. However, for welded pipes, the entire pipe needs to be stably fixed before the welding is completed to ensure the subsequent welding quality. Simply hoisting the pipes can easily affect the subsequent welding quality. Therefore, an improved large-diameter rolled pipe connecting fixture is needed to address this problem. Utility Model Content

[0004] The purpose of this invention is to provide a large-diameter rolled pipe body docking clamp to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a large-diameter rolled pipe docking clamp, comprising a gantry frame, wherein a fixing mechanism for clamping and fixing pipes for docking is provided at the upper end of the gantry frame, the fixing mechanism comprising an electric hoist, a lifting rope, a hook, a fixing plate, a connecting plate, a hydraulic cylinder, clamps, and a transmission rod. An electric hoist is fixedly installed at the upper end of the gantry frame, a lifting rope is wound around the surface of the winding drum of the electric hoist, a hook is fixedly installed at the lower end of the lifting rope, a fixing plate is fixedly installed at the lower end of the hook, a connecting plate is installed at the lower end of the fixing plate, a hydraulic cylinder is fixedly installed between the fixing plate and the connecting plate, clamps are movably installed on both sides of the surface of the connecting plate via rotating shafts, and transmission rods are movably installed on both sides of the fixing plate via rotating shafts.

[0006] Preferably, a connecting cable is fixedly installed on one side of the lower end of the electric hoist, and a control handle is fixedly installed at the lower end of the connecting cable. The control handle is electrically connected to the electric hoist through the connecting cable. The control handle can control the electric hoist to wind up the connecting cable, thereby driving the fixing mechanism to move up and down.

[0007] Preferably, the end of the transmission rod near the clamp is movably connected to the clamp via a rotating shaft. When the hydraulic cylinder extends and pushes the fixed plate upward, that is, when the fixed plate and the connecting plate move away from each other, the transmission rod can drive the two clamps to rotate towards each other and tighten, thereby firmly clamping and securing the pipe body.

[0008] Preferably, four clamps are provided, arranged in pairs on both sides of the connecting plate. One set of clamps holds the fixed pipe, while the other set of clamps holds the other pipe to be butt-welded. This ensures the stability between the pipes during the initial welding, thereby guaranteeing the welding quality.

[0009] Preferably, casters are movably installed at the four corners of the lower end of the gantry frame, which allows the entire device to be moved easily; thus, the position of the fixing mechanism can be easily adjusted.

[0010] Preferably, a limiting frame is fixedly provided at the lower end of the electric hoist. The limiting frame is sleeved on the outer surface of the hoisting rope, and the sway range of the hoisting rope can be limited by the limiting frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model involves placing clamps on the outer surface of the pipe and then extending them via a hydraulic cylinder. When the hydraulic cylinder extends and pushes the fixing plate upward, causing the fixing plate and connecting plate to move away from each other, the transmission rod can drive the two clamps to rotate and tighten, thereby firmly clamping and securing the pipe body. This method can clamp and fix two pipes that need to be welded, thus ensuring the stability between the two pipes during the initial welding process and guaranteeing the welding quality.

[0013] 2. This utility model can not only be used for pipe docking and clamping, but also as a lifting device. Simply change the clamping position to the middle of the pipe, clamp the middle of the pipe with two clamps at the same time, and then use an electric hoist to retract to drive the device to lift the pipe. In this way, when there is no large lifting equipment, this device can also be used as a lifting device, thus increasing the flexibility of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a large-diameter rolled pipe body docking clamp according to the present invention;

[0015] Figure 2 This is a side view of a large-diameter rolled tube docking clamp according to the present invention;

[0016] Figure 3 This utility model relates to a large-diameter rolled pipe body docking clamp. Figure 2 The front view.

[0017] In the diagram: 1. Gantry frame; 2. Electric hoist; 3. Lifting rope; 4. Hook; 5. Fixing plate; 6. Connecting plate; 7. Hydraulic cylinder; 8. Clamp; 9. Transmission rod; 10. Connecting cable; 11. Control handle; 12. Caster wheel; 13. Limit frame. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a large-diameter rolled pipe docking clamp, including a gantry frame 1. The upper end of the gantry frame 1 is provided with a fixing mechanism for clamping and fixing the pipe for docking. The fixing mechanism includes an electric hoist 2, a lifting rope 3, a hook 4, a fixing plate 5, a connecting plate 6, a hydraulic cylinder 7, clamps 8, and a transmission rod 9. The electric hoist 2 is fixedly installed at the upper end of the gantry frame 1. The lifting rope 3 is wound on the surface of the winding drum of the electric hoist 2. The hook 4 is fixedly installed at the lower end of the lifting rope 3. The fixing plate 5 is fixedly installed at the lower end of the hook 4. The connecting plate 6 is installed at the lower end of the fixing plate 5. The hydraulic cylinder 7 is fixedly installed between the fixing plate 5 and the connecting plate 6. Clamps 8 are movably installed on both sides of the surface of the connecting plate 6 through a rotating shaft. The transmission rod 9 is movably installed on both sides of the fixing plate 5 through a rotating shaft.

[0020] A connecting cable 10 is fixedly installed on one side of the lower end of the electric hoist 2. A control handle 11 is fixedly installed at the lower end of the connecting cable 10. The control handle 11 is electrically connected to the electric hoist 2 through the connecting cable 10. The electric hoist 2 can be controlled to rewind the connecting cable 10 through the control handle 11, thereby driving the fixing mechanism to move up and down.

[0021] The end of the transmission rod 9 near the clamp 8 is movably connected to the clamp 8 via a rotating shaft. When the hydraulic cylinder 7 extends and pushes the fixed plate 5 upward, that is, when the fixed plate 5 and the connecting plate 6 move away from each other, the transmission rod 9 can drive the two clamps 8 to rotate towards each other and tighten, thereby firmly clamping and securing the pipe body.

[0022] The clamps 8 are provided in four pairs, and are arranged in pairs on both sides of the connecting plate 6. One pair of clamps 8 clamps the fixed pipe, and the other pair of clamps 8 clamps the other pipe that needs to be welded. This can ensure the stability between the pipes during the initial welding, thereby ensuring the welding quality.

[0023] The gantry frame 1 is equipped with casters 12 at the four corners of its lower end, which allows the entire device to be moved easily and the position of the fixing mechanism to be adjusted.

[0024] The lower end of the electric hoist 2 is fixedly provided with a limiting frame 13, which is sleeved on the outer surface of the hoisting rope 3. The limiting frame 13 can limit the swing range of the hoisting rope 3.

[0025] Working principle: This device can be used in conjunction with lifting equipment. The lifting equipment is used to lift the pipes so that the two pipes are roughly aligned. Then, the clamps 8 are placed on the outer surface of the pipes. The hydraulic cylinder 7 extends. When the hydraulic cylinder 7 extends, it pushes the fixed plate 5 upward, which means that the fixed plate 5 and the connecting plate 6 move away from each other. Under the action of the transmission rod 9, the two clamps 8 can rotate and move closer to each other to tighten, thereby firmly clamping and fixing the pipe body. This can clamp and fix the two pipes that need to be welded, thereby ensuring the stability between the two pipes during the initial welding process and ensuring the welding quality.

[0026] It should be noted that the connecting plate 6 of this device blocks the welding position. At this time, the weld between the two clamps 8 can be welded first to complete most of the welding work. After most of the welding work is completed and the pipeline support structure is stable enough, the clamps 8 can be released. Then the workers can continue to weld the blocked position of the connecting plate 6.

[0027] In addition to being used for pipe docking and clamping, this device can also be used as a lifting device. Simply change the clamping position to the middle of the pipe, use two clamps 8 to clamp the middle of the pipe at the same time, and then use the electric hoist 2 to retract to drive the device to lift the pipe. In this way, when there is no large lifting equipment, this device can also be used as a lifting device, thus increasing the flexibility of the device.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A butt-joint clamp for large diameter rolled pipe bodies, comprising a gantry (1), characterized in that: The upper end of the gantry frame (1) is provided with a fixing mechanism for clamping and fixing pipes for docking. The fixing mechanism includes an electric hoist (2), a lifting rope (3), a hook (4), a fixing plate (5), a connecting plate (6), a hydraulic cylinder (7), a clamp (8), and a transmission rod (9). The upper end of the gantry frame (1) is fixedly provided with an electric hoist (2). The surface of the winding drum of the electric hoist (2) is wound with a lifting rope (3). The lower end of the lifting rope (3) is fixedly provided with a hook (4). The lower end of the hook (4) is fixedly provided with a fixing plate (5). The lower end of the fixing plate (5) is provided with a connecting plate (6). The fixing plate (5) and the connecting plate (6) are fixedly provided with a hydraulic cylinder (7). The two sides of the surface of the connecting plate (6) are movably provided with clamps (8) through a rotating shaft. The two sides of the fixing plate (5) are movably provided with transmission rods (9) through a rotating shaft.

2. A butt joint fixture for large diameter rolled pipe as defined in claim 1, wherein: A connecting cable (10) is fixedly installed on one side of the lower end of the electric hoist (2), and a control handle (11) is fixedly installed at the lower end of the connecting cable (10). The control handle (11) is electrically connected to the electric hoist (2) through the connecting cable (10).

3. A butt joint fixture for large diameter rolled pipe as defined in claim 1 wherein: The end of the transmission rod (9) near the clamp (8) is movably connected to the clamp (8) via a rotating shaft.

4. A butt joint fixture for large diameter rolled pipe as defined in claim 1 wherein: The clamps (8) are provided in four pairs, and are arranged in pairs on both sides of the connecting plate (6).

5. A large-diameter rolled pipe body docking clamp according to claim 1, characterized in that: The gantry frame (1) is equipped with casters (12) at the four corners of its lower end.

6. A butt joint fixture for large diameter rolled pipe as defined in claim 1 wherein: The lower end of the electric hoist (2) is fixedly equipped with a limit frame (13).

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