Pipe holding device driven by single push rod

Abstract

The utility model discloses a pipe holding device driven by a single push rod. The pipe holding device comprises a push rod assembly, a sliding rail box body connected with the push rod assembly, two crank mechanisms arranged on the two sides of the sliding rail box body and mechanical arms connected with the crank mechanisms. A sliding block movably connected with the sliding rail box body is arranged at the end of the push rod assembly, and connecting plates penetrating through the side faces of the sliding rail box body are arranged on the two sides of the sliding block. One end of the crank mechanism is rotationally connected with a connecting plate on the sliding block, and the other end of the crank mechanism is rotationally connected with the end part of the sliding rail box body; the tail end of the mechanical arm is arranged on the crank mechanism, and a roller assembly is arranged on the inner side of the front end of the mechanical arm. The marine riser holding device is simple and compact in structure, safe and reliable, and can hold a marine riser with the diameter of 200-500mm, so that the positions of the marine riser in the X-axis direction and the Y-axis direction are relatively fixed in the operation process, and the maintenance or installation operation of the marine riser is completed.

Description

Technical Field

[0001] This utility model relates to the field of marine engineering equipment technology, and more specifically, to a single push rod driven pipe-holding device. Background Technology

[0002] With the rapid advancement of marine engineering technology and the widespread application of technologies such as drilling platforms, subsea production systems, and subsea pipelines, solid technical support has been provided for the development of offshore oil and gas resources. Among these, the marine riser, as a key link connecting the sea surface and the seabed, occupies an important position in the entire marine engineering structure system. During operation, the marine riser carries high-temperature and high-pressure oil and gas resources while withstanding the impact of waves and ocean currents. Its safety and reliability are directly related to the smooth transportation of oil and gas and the safety of the marine ecosystem.

[0003] Given the harsh operating environment of marine risers and the difficulty of installation, inspection, and maintenance, especially the complex and variable stress conditions they must withstand during operation, including internal fluid pressure, external environmental loads, and the effects of ship waves, marine risers may experience slippage in the X and Y axes and rotation around the Z axis. To ensure safe and efficient operation, a pipe clamping device must be used to stabilize the riser and keep it relatively stationary during operation.

[0004] Therefore, the development of a high-efficiency pipe-holding device driven by a single push rod aims to simplify the installation and maintenance process of marine risers, and improve their economy, safety, reliability and stability. This has not only profound economic significance, but also immeasurable value for ensuring the smooth progress of marine oil and gas projects and the sustainable development of the marine environment. Utility Model Content

[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a single push rod driven pipe-holding device with a simple and compact structure, safe and reliable, capable of holding marine risers with a diameter of 200mm to 500mm, keeping their position relatively fixed in the X and Y axes during operation, and completing the maintenance or installation of marine risers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a single push rod driven tube clamping device, including a push rod assembly, a slide rail housing connected to the push rod assembly, two crank mechanisms disposed on both sides of the slide rail housing, and a mechanical arm connected to the crank mechanisms;

[0008] The end of the push rod assembly is provided with a slider that is movably connected to the slide rail housing, and the slider is provided with connecting plates passing through the side of the slide rail housing on both sides;

[0009] One end of the crank mechanism is rotationally connected with the connecting plate on the slider, and the other end is rotationally connected with the end of the slide rail box body;

[0010] The end of the mechanical arm is arranged on the crank mechanism, and the inner side of the front end arm claw of the mechanical arm is provided with a roller assembly.

[0011] Preferably, the push rod assembly comprises a push rod frame arranged in the slide rail box body, a push rod arranged on the push rod frame and a slider connected with the top end of the push rod; the push rod is driven by a hydraulic oil cylinder or a motor, and the push rod is connected with the slider through a first pin shaft; the slider moves along the slide rail box body under the action of the push rod.

[0012] Preferably, notches for the connecting plate to pass through are formed on the two sides of the slide rail box body; a slide rail for the slider to move is arranged in the slide rail box body, and the end of the slide rail box body away from the push rod assembly is provided with a pin hole for mounting the crank mechanism.

[0013] Preferably, the crank mechanism comprises a connecting rod rotationally connected with the connecting plate and a crank connected with the connecting rod; the connecting rod is rotationally connected with the connecting plate through a second pin shaft; one end of the crank is rotationally connected with the connecting rod through a third pin shaft, and the other end of the crank is rotationally connected with the slide rail box body through a fourth pin shaft.

[0014] Preferably, the end of the mechanical arm is arranged on the crank of the crank mechanism, and the inner side of the front end arm claw of the mechanical arm is provided with a trapezoidal groove for mounting the roller assembly.

[0015] Preferably, the roller assembly comprises roller frames symmetrically arranged in the trapezoidal groove at the front end of the mechanical arm and rollers arranged on the roller frames.

[0016] Preferably, the rollers are provided with elastic shock-absorbing gaskets.

[0017] The utility model discloses the beneficial effects are as follows:

[0018] 1. The utility model discloses simple and compact structure, safe and reliable can hold the diameter 200mm~500mm's marine riser, makes it keep the position relative fixed in the X and Y axle direction in the operation process, completes the maintenance or installation operation of marine riser;

[0019] 2. The utility model discloses the installation and maintenance process of marine riser are simplified, and the economy, safety, reliability and stability of its operation are improved, not only have far -reaching economic significance, but also have inestimable value to guarantee the smooth progress of marine oil and gas engineering and the sustainable development of marine environment. DRAWINGS

[0020] Figure 1The utility model discloses a single push rod driven pipe holding device's structure schematic drawing.

[0021] Figure 2 The utility model discloses a single push rod driven pipe loosening structure schematic drawing.

[0022] Figure 3 The utility model discloses a single push rod driven pipe holding structure schematic drawing.

[0023] In the drawing, 1, push rod assembly, 101, push rod, 102, first pin shaft, 103, sliding block, 104, push rod frame, 105, connecting plate, 2, slide rail box, 201, crank mechanism, 202, second pin shaft, 203, connecting rod, 204, crank, 205, third pin shaft, 206, fourth pin shaft, 207, second pin shaft, 208, connecting rod, 209, crank, 210, third pin shaft, 211, fourth pin shaft, 3, mechanical arm, 4, roller assembly, 401, roller frame, 402, roller, 5, vertical pipe. DETAILED DESCRIPTION

[0024] In order to better understand the above technical scheme of the utility model, the technical scheme of the utility model will be further explained in combination with the drawings and embodiments below.

[0025] In combination with the drawings, Figure 1 The utility model discloses a single push rod driven pipe holding device, including push rod assembly 1, with the push rod assembly 1 connection's slide rail box 2, set up in the both sides of slide rail box 2 two crank mechanisms 201 and with crank mechanism 201 connection's mechanical arm 3. The end of push rod assembly 1 is equipped with with slide rail box 2 swing joint's sliding block 103, and the both sides of this sliding block 103 are equipped with through the connecting plate 105 of slide rail box 2 side. The one end of crank mechanism 201 is rotatably connected with the connecting plate 105 on the sliding block 103, and the other end is rotatably connected with the end of slide rail box 2. The mechanical arm 3 end is set on the crank mechanism 201, and the inside of the front end of this mechanical arm 3 is equipped with roller assembly 4. The utility model can hold the vertical pipe action, and push rod assembly pushes the sliding block 103 along the slide rail box 2 and slides to the side close to the mechanical arm 3, drives the rotation of crank mechanism 201, thereby makes two mechanical arms 3 close and hold the vertical pipe 5. The utility model can loosen the vertical pipe action, and push rod assembly pushes the sliding block 103 along the slide rail box 2 and slides to the side away from the mechanical arm 3, drives the rotation of crank mechanism 201, thereby makes two mechanical arms 3 separate, and loosens the vertical pipe 5.

[0026] In combination with the drawings, Figure 1 , Figure 2As shown, the push rod assembly 1 includes a push rod frame 104 arranged on the slide rail box 2, a push rod 101 arranged on the push rod frame 104, and a sliding block 103 connected to the top end of the push rod 101; the push rod 101 is driven by a hydraulic cylinder or a motor, and the push rod 101 is connected to the sliding block 103 through a first pin shaft 102; the hydraulic cylinder or the motor drives the push rod 101 to act, and the push rod 101 is connected to the sliding block 103 through the first pin shaft 102, and the sliding block 103 moves along the slide rail of the slide rail box 2 under the action of the push rod 101.

[0027] As shown in Figure 1 , Figure 2 As shown, the slide rail box 2 is provided with a slot through which the connecting plate 105 passes on both sides; the slide rail box 2 is internally provided with a slide rail for the movement of the sliding block 103, and the end of the slide rail box 2 away from the push rod assembly 1 is provided with a pin hole for mounting the crank mechanism 201.

[0028] As shown in Figure 1 , Figure 2 As shown, the connecting plate 105 is welded on the sliding block 103 through the slot on the side of the slide rail box 2, and the connecting plate 105 is provided with a pin hole connected with the crank mechanism 201.

[0029] As shown in Figure 1 , Figure 2 As shown, the two crank mechanisms 201 are symmetrically arranged on both sides of the slide rail box 2, and the crank mechanism 201 includes a connecting rod rotatably connected with the connecting plate 105 and a crank connected with the connecting rod; the connecting rod is rotatably connected with the connecting plate 105 through a second pin shaft 202; one end of the crank 204(209) is rotatably connected with the connecting rod 203(208) through a third pin shaft 205(210), and the other end of the crank 204(209) is rotatably connected with the slide rail box 2 through a fourth pin shaft 206(211).

[0030] As shown in Figure 1 , Figure 2 As shown, the end of the mechanical arm 3 is welded on the crank 204(209) of the crank mechanism 201; the inner side of the front end arm claw of the mechanical arm 3 is provided with a trapezoidal groove for mounting the roller assembly 4. The roller assembly 4 includes a roller frame 401 symmetrically arranged in the trapezoidal groove at the front end of the mechanical arm 3 and a roller 402 arranged on the roller frame 401; wherein the roller frame 401 is welded with the trapezoidal groove at the front end of the mechanical arm 3 as a whole, so as to ensure the overall stability of the structure of the mechanical arm 3. The roller 402 is mounted on the roller frame 401, and the roller 402 is provided with an elastic shock absorbing gasket.

[0031] As shown in Figure 2 , Figure 3 As shown, the roller plays the following roles in the operation process:

[0032] (1)Support and limit: when the two mechanical arms 3 are folded, the marine riser 5 is always in contact with the rollers, providing support and limiting for it, ensuring that the marine riser remains stable during the operation process, avoiding x, y axial displacement or rotation caused by external forces.

[0033] (2)Self-adaptive marine riser sway: the rollers can rotate around their own shafts, and this design enables the rollers to adapt to the sway of the marine riser 5; when the marine riser 5 sways, the rollers can quickly adjust their positions and always adhere to the two sides of the marine riser 5, thereby ensuring the stability and reliability of the single-push-rod-driven pipe holding device.

[0034] (3)Elastic shock absorption: the rollers can also be equipped with elastic shock absorption pads, which can effectively absorb the impact received by the marine riser 5, further enhancing the reliability of the operation. When the marine riser is impacted by external forces, the elastic shock absorption pads can quickly disperse and absorb the impact force, thereby protecting the marine riser from damage.

[0035] The single-push-rod-driven pipe holding device of the utility model is divided into two different actions of "holding the riser" and "releasing the riser" according to the operation process, and the specific working process is as follows:

[0036] (I) Holding the riser

[0037] As shown in Figure 3 combination, the push rod 101 pushes the sliding block 103 to move along the X-axis negative direction on the internal slide rail of the slide rail box body 2, along with the movement of the connecting plates 105 on both sides of the sliding block 103 along the X-axis negative direction, the connecting rod 203 is driven to rotate counterclockwise around the second pin shaft 202, the connecting rod 208 is driven to rotate clockwise around the second pin shaft 207, at the same time, the connecting rod 203 drives the crank 204 to rotate counterclockwise around the fourth pin shaft 206, and the connecting rod 208 drives the crank 209 to rotate clockwise around the fourth pin shaft 211, so that the arm claws of the two mechanical arms 3 are folded and hold the riser 5.

[0038] (II) Releasing the riser

[0039] As shown in Figure 2 combination, the push rod 101 pushes the sliding block 103 to move along the X-axis positive direction on the internal slide rail of the slide rail box body 2, along with the movement of the connecting plates 105 on both sides of the sliding block 103 along the X-axis positive direction, the connecting rod 203 is driven to rotate clockwise around the second pin shaft 202, the connecting rod 208 is driven to rotate counterclockwise around the second pin shaft 207, at the same time, the connecting rod 203 drives the crank 204 to rotate clockwise around the fourth pin shaft 206, and the connecting rod 208 drives the crank 209 to rotate counterclockwise around the fourth pin shaft 211, so that the arm claws of the two mechanical arms 3 are separated and release the riser 5.

[0040] In summary, the single-push-rod-driven pipe holding device has simple and compact structure, is safe and reliable, can hold the marine riser with a diameter of 200-500 mm, keeps the position of the marine riser in X and Y axial directions relatively fixed during operation, and completes the maintenance or installation operation of the marine riser; when the operation object is a marine riser with other pipe diameter sizes, the pipe holding size can be adjusted by replacing the mechanical arm and the roller assembly.

[0041] Those skilled in the art of the present technology should recognize that the above embodiments are only used to illustrate the present utility model, and are not used as a limitation on the present utility model, and as long as the changes and variations of the above described embodiments are within the scope of the spirit of the present utility model, they will fall within the scope of the claims of the present utility model.

Claims

1. A single-push-rod driven pipe-holding device, characterized in that, It includes a push rod assembly, a slide rail housing connected to the push rod assembly, two crank mechanisms located on both sides of the slide rail housing, and a robotic arm connected to the crank mechanisms; The end of the push rod assembly is provided with a slider that is movably connected to the slide rail housing, and the slider is provided with connecting plates passing through the side of the slide rail housing on both sides; One end of the crank mechanism is rotatably connected to the connecting plate on the slider, and the other end is rotatably connected to the end of the slide rail housing. The end of the robotic arm is mounted on the crank mechanism, and a roller assembly is provided on the inner side of the front end gripper of the robotic arm.

2. The single-push-rod driven pipe-holding device according to claim 1, characterized in that: The push rod assembly includes a push rod frame disposed inside the slide rail housing, a push rod disposed on the push rod frame, and a slider connected to the top end of the push rod; the push rod is driven by a hydraulic cylinder or a motor, and the push rod is connected to the slider via a first pin. The slider moves along the slide rail box under the action of the push rod.

3. The single-push-rod driven pipe-holding device according to claim 1, characterized in that: The slide rail housing has slots on both sides for the connecting plate to pass through; the slide rail housing has a slide rail for the slider to move inside, and the end of the slide rail housing away from the push rod assembly has a pin hole for mounting the crank mechanism.

4. The single-push-rod driven pipe-holding device according to claim 1, characterized in that: The crank mechanism includes a connecting rod rotatably connected to the connecting plate and a crank connected to the connecting rod; the connecting rod is rotatably connected to the connecting plate via a second pin; one end of the crank is rotatably connected to the connecting rod via a third pin, and the other end of the crank is rotatably connected to the slide rail housing via a fourth pin.

5. The single-push-rod driven pipe-holding device according to claim 1, characterized in that: The end of the robotic arm is disposed on the crank of the crank mechanism, and the inner side of the front end claw of the robotic arm is provided with a trapezoidal groove for mounting the roller assembly.

6. The single-push-rod driven pipe-holding device according to claim 5, characterized in that: The roller assembly includes a roller frame symmetrically arranged in a trapezoidal groove at the front end of the robotic arm and rollers arranged on the roller frame.

7. The single-push-rod driven pipe-holding device according to claim 6, characterized in that: The roller is equipped with elastic shock-absorbing pads.

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