CN213294541U

CN213294541U - Pipe lifting frame

Info

Publication number: CN213294541U
Application number: CN202021770241.1U
Authority: CN
Inventors: 齐兵兵; 曲有杰; 肖源彬; 齐芳芳
Original assignee: Shenzhen Offshore Oil Engineering Underwater Technology Co ltd
Current assignee: Cnooc Shenzhen Ocean Engineering Technology Service Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-05-28
Anticipated expiration: 2030-08-21

Abstract

The utility model relates to a pipe lifting frame, which comprises a frame, a driving mechanism arranged on the frame, a transmission mechanism arranged on the frame and connected with the driving mechanism and driven by the driving mechanism, and a hoisting assembly connected with the transmission mechanism and driven by the transmission mechanism to hoist or lower a pipeline under the driving of the driving mechanism; the driving mechanism comprises a handle for connecting and operating external equipment and a driving assembly which is connected with the handle and drives the driving through the handle, and the driving assembly is connected with the transmission mechanism. This pipe-lifting rack can support the sea pipe in the sea pipe maintenance process in order to guarantee that the pipe cutting operation normally accomplishes to the accessible external equipment replaces the manual work to go on, thereby can improve the sea pipe and carry the security of carrying and carrying support efficiency and sea pipe maintenance operation. The pipe lifting frame has the advantages of simple structure, accuracy, stability and wide application range.

Description

Pipe lifting frame

Technical Field

The utility model relates to a sea pipe maintenance technology, more specifically say, relate to a carry pipe rack.

Background

In recent years, the number of deepwater marine pipes is increasing, and accidents of marine pipe damage are more and more frequent due to long design and construction years, pipeline corrosion, trawler dragging and the like. The pipeline water depth of 3-1 gas field of the cultivated lychee bay in China reaches 1500 meters, and the water depth of 17-2 project of the developed cemetery reaches 1700 meters. Once the pipeline of the deepwater oil and gas field leaks, serious marine environmental pollution and huge economic loss can be caused, and the research on deepwater marine pipe emergency maintenance equipment is not slow.

When the submarine pipeline is damaged, two common maintenance modes are adopted, a small corrosion leak point can be maintained by directly installing a leaking stoppage pipe clamp, and the damaged section of the submarine pipeline needs to be cut off and then a mechanical connector needs to be butted with the damaged section of the submarine pipeline to complete the restoration of the submarine pipeline if the leaking stoppage pipe clamp cannot be simply installed. There are generally two methods involved in pipe cutting repair: a pit blowing method and a pipe lifting method. The blow-out method is that a diver or an underwater robot blows out a large pit on the seabed by using a mud suction pump so as to complete the subsequent cutting of the sea pipe and the replacement of the sea pipe joint. The hole blowing method has the advantages that the phenomenon of continuous accumulation of sludge can occur in the hole blowing process, so that the rework probability is high, the efficiency is not high, the project cost is not favorably saved, the method is only limited to the condition that soil is fine sand and stone, and the method is not suitable for a hard seabed. The pipe lifting method is that the sea pipe is lifted to a certain height from the seabed by utilizing a support, when the sea pipe is maintained in a shallow water area, a simple H-shaped frame is used for being provided with a lifting point and a chain block, a diver connects the chain block with a hanging strip surrounding the sea pipe, and the sea pipe is lifted from the seabed by operating the chain block; however, in deep-water marine pipe maintenance, a diver cannot be competent for the work, and an underwater robot is required to complete the whole process.

At present, there is a patent achievement in the domestic research on the technology of a marine pipe maintenance pipe lifting frame, a large hydraulic control type pipe lifting frame with 6 degrees of freedom is adopted, although the function is complete, the manufacturing cost is high, the processing difficulty is high, the pipe lifting frame is generally used under the complex maintenance situations that pipes need to be transversely moved and the like, and domestic processing and manufacturing capabilities are temporarily unavailable in China, only one pipe lifting device is purchased abroad, and for the light-weight maintenance operation of cutting small sections of marine pipes which is more frequently required, only a smaller, more compact and lighter pipe lifting tool is needed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in that, a pipe lifting frame for promoting the maintenance of the submarine pipe of being convenient for is provided.

The utility model provides a technical scheme that its technical problem adopted is: the pipe lifting frame comprises a rack, a driving mechanism arranged on the rack, a transmission mechanism arranged on the rack and connected with the driving mechanism and driven by the driving mechanism to transmit, and a hoisting assembly connected with the transmission mechanism and driven by the transmission mechanism to hoist or lower a pipeline under the driving of the driving mechanism;

the driving mechanism comprises a handle for connecting and operating external equipment and a driving assembly which is connected with the handle and drives the driving through the handle, and the driving assembly is connected with the transmission mechanism.

Preferably, the driving assembly comprises a transmission shaft driven by the handle to rotate and a driving wheel arranged at one end of the transmission shaft and driven by the transmission shaft to rotate;

the driving wheel is connected with the transmission mechanism.

Preferably, the driving assembly further comprises a driving wheel, a driven wheel and a transmission belt sleeved on the driving wheel and the driven wheel;

the driving wheel is connected with the handle and is driven by the handle to rotate;

the driven wheel is connected with one end, far away from the driving wheel, of the transmission shaft so as to be driven by the driving wheel to rotate and further drive the transmission shaft to rotate.

Preferably, the driving wheel is a first chain wheel;

the driven wheel is a second chain wheel;

the transmission belt is a chain sleeved on the first chain wheel and the second chain wheel.

Preferably, the transmission mechanism comprises a transmission screw rod longitudinally arranged on the rack, and a movable limiting disc sleeved on the transmission screw rod and in threaded connection with the transmission screw rod;

the driving wheel is connected with the movable limiting disc to drive the movable limiting disc to rotate so as to drive the transmission screw rod to reciprocate;

one end of the transmission screw rod is connected with the hoisting assembly so as to drive the hoisting assembly to hoist or lower the pipeline through reciprocating motion.

Preferably, the driving wheel is a first bevel gear;

the movable limiting disc comprises a threaded sleeve sleeved on the transmission screw rod and a second bevel gear sleeved on the outer peripheral wall of the threaded sleeve;

the second bevel gear is meshed with the first bevel gear.

Preferably, the hoisting assembly comprises a universal joint connected with the transmission mechanism and a hanging strip, one end of the hanging strip is fixedly connected with the universal joint, and the other end of the hanging strip forms a free end to be detachably connected with the universal joint;

the free end of the hanging strip is provided with a connecting structure detachably connected with the universal joint.

Preferably, the connecting structure comprises a hook arranged at one end of the hanging strip;

the universal joint is provided with a hanging hole matched with the hook;

the universal joint is connected with the transmission mechanism through a universal joint connecting piece.

Preferably, the rack comprises a beam and two support legs which are arranged at two ends of the beam and extend downwards;

the transmission mechanism is arranged on the cross beam;

the hoisting assembly is arranged between the two supporting legs.

Preferably, the frame is provided with a lifting lug.

Implement the utility model discloses a carry a tub frame has following beneficial effect: this carry pipe rack accessible external equipment to connect actuating mechanism's handle and drive this actuating mechanism's drive assembly drive mechanism through this handle of external equipment operation, and then drive the hoist and mount subassembly that is connected with this actuating mechanism and hang or transfer the pipeline, thereby can support the sea pipe in the sea pipe maintenance process and normally accomplish in order to guarantee to cut the pipe operation, and the accessible external equipment replaces the manual work to go on, thereby can improve the sea pipe and carry the security of carrying support efficiency and sea pipe maintenance operation. The pipe lifting frame has the advantages of simple structure, accuracy, stability and wide application range.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic view of a condition of use of a carrier according to some embodiments of the present invention;

fig. 2 is a schematic diagram of the construction of the riser rack shown in fig. 1;

fig. 3 is a schematic view of another angled configuration of the riser rack of fig. 2;

fig. 4 is a cross-sectional view of the riser rack shown in fig. 1.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 and 2 show some preferred embodiments of the inventive carrier. The pipe lifting frame is suitable for deep-water marine pipe lifting and supporting operation, stable and safe marine pipe lifting and supporting are achieved, and subsequent pipe cutting operation is facilitated. Support the sea pipe in order to guarantee to cut the normal completion of pipe operation at sea pipe maintenance in-process to accessible external equipment replaces artifical the going on, thereby can improve the sea pipe and carry out the security of supporting efficiency and sea pipe maintenance operation. The pipe lifting frame has the advantages of simple structure, accuracy, stability and wide application range. It should be noted that the external device in this application may be an ROV underwater robot, and the pipeline 100 may be a sea pipe, and it should be understood that in some other embodiments, the pipe lifting frame is not only suitable for a sea pipe, but also suitable for other pipelines 100.

As shown in fig. 1 and 2, the pipe carrier may include a frame 10, a driving mechanism 20, a transmission mechanism 30, and a hoisting assembly 40. The frame 10 can be used for mounting the driving mechanism 20 and the transmission mechanism 30. The driving mechanism 20 can be installed on the rack 10, and can be connected to the transmission mechanism 30 and an external device, and can be driven by the external device to drive the transmission mechanism 30 to transmit. The transmission mechanism 30 can be mounted on the frame 10 and can be connected to the driving mechanism 20, and can be driven by the driving mechanism 20 for transmission. The hoisting assembly 40 can be connected to the transmission mechanism 30, and can be driven by the transmission mechanism 30 to hoist or lower the pipeline 100 under the driving of the driving mechanism 20.

Further, in some embodiments, the frame 10 may include a beam 11 and support legs 12. The number of the support legs 12 may be two, and the two support legs 12 may be disposed at two ends of the cross beam 11 and respectively extend downward along a direction perpendicular to the cross beam 11. In some embodiments, the cross member 11 and the support legs 12 can be made of metal. The cross member 11 and the support legs 12 may be integrally formed by casting. In some embodiments, the frame 10 may be provided with two lifting lugs 13, and the lifting lugs 13 may be two. The two lifting lugs 13 may be disposed corresponding to the two support legs 12 one to one, and are located at the upper portions of the support legs 12, and may be used to connect a rigging, and be connected to a crane through the rigging, so that the crane can lower the whole pipe lifting frame to the seabed or lift the whole pipe lifting frame from the seabed.

As shown in fig. 2-3, further, in some embodiments, the driving mechanism 20 may include a handle 21 and a driving assembly 22, the handle 21 may be used for connecting with and operating the external device. In some embodiments, the handle 21 may be connected to a manipulator of the ROV underwater robot, and the hydraulic motor of the ROV underwater robot may rotate the manipulator rapidly, so as to rotate the handle 21 rapidly. The handle 21 can be connected to the driving component 22, and can drive the driving component 22 to drive through rotation. The driving assembly 22 can be disposed on one of the supporting legs 12 and the cross beam 11, and can be connected to the transmission mechanism 30. Of course, the handle 21 can drive the transmission mechanism 30 to transmit when rotating.

Further, in some embodiments, the drive assembly 22 may include a drive wheel 221, a driven wheel 222, a drive belt 223, a drive shaft 224, and a drive wheel 225. The driving wheel 221 is rotatably disposed on the supporting leg 12, and the driving wheel 221 may be a first sprocket. Of course, it is understood that in other embodiments, the drive wheel 221 may not be limited to a sprocket. The driven wheel 222 can be disposed on the support leg 12, and can be spaced apart from the driving wheel 221 in the longitudinal direction, and can be driven by the driving wheel 221 to rotate through the transmission jump 223, and in some embodiments, the driven wheel 222 can be a second chain wheel. It will be appreciated that in other embodiments, the driven pulley 222 may not be limited to a sprocket. The driving belt 223 can be disposed on the driving wheel 221 and the driven wheel 222. When the driving wheel 221 rotates, the transmission run-out 223 can rotate to drive the driven wheel 222 to rotate. In some embodiments, the driving belt 223 can be a chain, and the chain can be sleeved on the first and second sprockets. In some embodiments, the handle 21 can be connected to the driving wheel 221, which can drive the driving wheel 221 to rotate under the operation of an external device. The driven wheel 222 can be connected to the transmission shaft 224, and can be driven by the driving wheel 221 to drive the transmission shaft 224 to rotate. The drive shaft 224 is rotatably mounted to the cross member 11. The cross beam 11 may be provided with bearings at intervals around the transmission shaft 224 for facilitating the rotation of the transmission shaft 224. Of course, it will be appreciated that in other embodiments, the bearing may be omitted. The transmission shaft 224 can extend toward the transmission mechanism 30, and one end of the transmission shaft 224 can be connected to the driven wheel 222 and rotated by the handle 21, and the other end can be connected to the driving wheel 225 to rotate the driving wheel 225. In some embodiments, the driving wheel 225 can be disposed at an end of the transmission shaft 224 away from the driven wheel 222, and can be connected to the transmission mechanism 30, so as to drive the transmission mechanism 30 to transmit under the driving of the transmission shaft 224. In some embodiments, the drive wheel 225 may be a first bevel gear.

Further, in some embodiments, the transmission mechanism 30 may include a transmission screw 31 and a movable limiting disc 32, the transmission screw 31 may be disposed on the frame 10 along a longitudinal direction, specifically, it may protrude from the cross beam 11 and may be disposed between the two supporting legs 12, and one end of the transmission screw 31 may be connected to the hoisting component 40, specifically, one end of the transmission screw 31 extending downward may be connected to the hoisting component 40. The movable limiting plate 32 can be sleeved on the transmission screw rod 31 and can be screwed with the transmission screw rod 31. The driving wheel 225 can be connected to the movable limiting plate 32 to drive the movable limiting plate 32 to rotate. The movable limiting disc 32 rotates to drive the transmission screw rod 31 to reciprocate along the longitudinal direction, and then the hoisting assembly 40 can be driven to reciprocate, so that the pipeline 100 can be hoisted or lowered.

Further, in some embodiments, the active limiting disk 32 may include a threaded sleeve 321 and a second bevel gear 322. The screw sleeve 321 can be sleeved on the transmission screw rod 31 and can be rotatably disposed on the beam 11. The second bevel gear 322 can be sleeved on the outer peripheral wall of the threaded sleeve 321, can be engaged with the first bevel gear, and can be driven by the first bevel gear to rotate, so as to drive the threaded sleeve 321 to rotate. In some embodiments, the second bevel gear 322 can be integrally formed with the screw sleeve 321, and particularly, the second bevel gear 322 can be integrally formed with the screw sleeve 321 by injection molding.

As shown in fig. 2 to 4, further, the hoisting assembly 40 may include a universal joint 41, a hanging strip 42, a hook 43, and a universal joint connector 44. The universal joint 41 can be connected to the transmission mechanism 30 through a universal joint connector 44, and specifically, the universal joint 41 can be connected to the lower end of the transmission screw 31 and can be connected and fixed to the transmission screw 31 through the universal joint connector 44. The universal joint 41 may include a universal shaft 411, a suspension buckle 412 connected to the universal shaft 411, and a bracket 413, the bracket 413 may be connected to the lower end of the driving screw 31 through the universal joint connector 44, the universal shaft 411 may be rotatably disposed on the bracket 413, and the suspension buckle 412 may be connected to the suspension band 42. One end of the hanging strip 42 can be fixedly connected with the universal joint 41, and the other end can form a free end which is rotatably connected with the universal joint 41. In some embodiments, one end of the hanging strip 41 can be fixedly connected to the hanging buckle 412, and the other end can be provided with the hook 43, and the hanging buckle 412 can be detachably hung through the hook 43. Accordingly, the universal joint 41 may be disposed on the hanging hole 4121 for the hook 43 to engage, and specifically, the hanging hole 4121 may be disposed on the hanging buckle 412. The universal joint connector 44 may be a universal joint connecting screw, one end of which may be connected to the bracket 413 of the universal joint 41, and the other end of which may be inserted into the driving screw 31 to be screwed with the driving screw 31.

The pipe lifting frame can realize the operation of lowering and ROV by a crane to complete the hoisting and supporting process of the marine pipe in the process of deep-water marine pipe maintenance operation. The pipe lifting frame is one of important construction tools for deepwater sea pipe maintenance, and can lift and lower the sea pipe within the travel range according to the construction requirements of sea pipe laying and maintenance. Through designing into the loop wheel machine hoist and mount and transfer and ROV auxiliary operation use form, can be stable, convenient, safe lift by crane the support operation to multiple different pipe diameter marine pipes.

When the pipe lifting frame is adopted to carry out the hoisting and supporting operation of the sea pipes, the pipe lifting frame is firstly put down to the upper part of the sea pipes through a crane to be butted with the anti-sinking plate and is stabilized at a designated position, the ROV manipulator winds the hook 43 at one end of the hanging strip 42 around the sea pipe, hangs the hook on the hanging hole 4121 of the hanging buckle 412, and after the connection is determined to be stable, the ROV manipulator grasps the handle 21 at the end of the driving wheel 221, the hydraulic oil circuit is connected, the hydraulic motor drives the ROV manipulator to rotate rapidly and drives the driving wheel 221 to rotate rapidly through the handle 221, the driven wheel 223 is driven to rotate by the transmission chain so as to drive the transmission shaft 224 to rotate, the driving wheel 225 is driven to rotate by the rotation of the transmission shaft 224 and drives the second bevel gear 322 engaged with the driving wheel to rotate in a matching manner, the second bevel gear 322 is connected with the threaded sleeve 321 and drives the threaded sleeve 321 to rotate, and the transmission screw rod 31 connected with the threaded sleeve 321 makes a feeding motion along the lead direction. When the submarine pipeline is lifted or lowered, and needs to be constructed on a seabed with a certain gradient, the universal joint 41 can shift within a certain angle range, so that the center of gravity of the whole mechanism is approximately stable, and the risk of side turning is reduced.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A pipe lifting frame is characterized by comprising a frame (10), a driving mechanism (20) arranged on the frame (10), a transmission mechanism (30) which is arranged on the frame (10) and connected with the driving mechanism (20) and driven by the driving mechanism (20), and a hoisting assembly (40) which is connected with the transmission mechanism (30) and driven by the transmission mechanism (30) to hoist or lower a pipeline (100) under the driving of the driving mechanism (20);

the driving mechanism (20) comprises a handle (21) for connection operation of external equipment and a driving assembly (22) which is connected with the handle (21) and drives the driving through the handle (21), and the driving assembly (22) is connected with the transmission mechanism (30).

2. The tube lifting rack according to claim 1, wherein the driving assembly (22) comprises a transmission shaft (224) driven by the handle (21) to rotate, and a driving wheel (225) arranged at one end of the transmission shaft (224) and driven by the transmission shaft (224) to rotate;

the drive wheel (225) is connected to the transmission (30).

3. The tube lifting rack according to claim 2, characterized in that the driving assembly (22) further comprises a driving wheel (221), a driven wheel (222), and a transmission belt (223) sleeved on the driving wheel (221) and the driven wheel (222);

the driving wheel (221) is connected with the handle (21) and is driven by the handle (21) to rotate;

the driven wheel (222) is connected with one end of the transmission shaft (224) far away from the driving wheel (225) so as to be driven by the driving wheel (221) to rotate and further drive the transmission shaft (224) to rotate.

4. The riser rack of claim 3, wherein the drive wheel is a first sprocket;

the driven wheel (222) is a second chain wheel;

the transmission belt (223) is a chain sleeved on the first chain wheel and the second chain wheel.

5. The tube lifting frame according to claim 2, wherein the transmission mechanism (30) comprises a transmission screw rod (31) longitudinally arranged on the frame (10), and a movable limiting disc (32) sleeved on the transmission screw rod (31) and screwed with the transmission screw rod (31);

the driving wheel (225) is connected with the movable limiting disc (32) to drive the movable limiting disc (32) to rotate so as to drive the transmission screw rod (31) to reciprocate;

one end of the transmission screw rod (31) is connected with the hoisting assembly (40) so as to drive the hoisting assembly (40) to hoist or lower the pipeline (100) through reciprocating motion.

6. The riser rack according to claim 5, characterized in that the drive wheel (225) is a first bevel gear;

the movable limiting disc (32) comprises a threaded sleeve (321) sleeved on the transmission screw rod (31) and a second bevel gear (322) sleeved on the outer peripheral wall of the threaded sleeve (321);

the second bevel gear (322) is meshed with the first bevel gear.

7. A pipe lifting frame according to claim 1, characterized in that the hoisting assembly (40) comprises a universal joint (41) connected with the transmission mechanism (30), and a sling (42) having one end fixedly connected with the universal joint (41) and the other end forming a free end for detachable connection with the universal joint (41);

the free end of the hanging strip (42) is provided with a connecting structure (43) detachably connected with the universal joint (41).

8. The riser rack according to claim 7, characterized in that the connection structure (43) comprises a hook provided at one end of the hanging strip (42);

a hanging hole (4121) matched with the hook is formed in the universal joint (41);

the universal joint (41) is connected with the transmission mechanism (30) through a universal joint (41) connecting piece.

9. A pipe lifting frame according to claim 1, characterized in that the frame (10) comprises a cross beam (11) and two support legs (12) arranged at both ends of the cross beam (11) and extending downwards;

the transmission mechanism (30) is arranged on the cross beam (11);

the hoisting assembly (40) is arranged between the two supporting legs (12).

10. A pipe-lifting rack according to claim 1, characterized in that the rack (10) is provided with lifting lugs (13).