Deep sea pipe cable buoyancy block clamp clamping installation device

Abstract

The utility model relates to a deep sea pipe cable buoyancy block clamp clamping installation device which comprises a cylinder body assembly, a buoyancy block clamp, a right clamping jaw assembly, a left clamping jaw assembly and a center pin shaft. The center pin shaft penetrates through hinge support holes in the right clamping jaw assembly and the left clamping jaw assembly and is fixed through fixing nuts, the fixed end of the cylinder body assembly is movably connected to the tail of the left clamping jaw assembly, and the telescopic end of the cylinder body assembly is movably connected to the tail of the right clamping jaw assembly. According to the utility model, the situation that local bolts exceed the outer arc of the fixture body to interfere with the installation of external floating blocks during installation can be avoided, and the fixing effect is good.

Description

Technical Field

[0001] The utility model relates to the field of marine cables, in particular to a deep-sea cable buoyancy block clamp clamping and installation device. Background Art

[0002] With the development of deep-sea resources around the world, various deep-sea floating structures have been used on a large scale. Since deep-sea equipment requires an operating platform on water or land to provide power and control signals, and to feed back the collected data to the operating platform, a large number of pipes and cables need to be connected between the deep-sea equipment and the water platform. Since the floating structure and the fixed section of the seabed need to adapt to the rise and fall and overcome the effects of waves and currents, the connection of pipes and cables cannot be achieved by using a rigid fixation method, and dynamic flexible pipes and cables are generally used for connection. In deep-water environments, the distance between the flexible pipes and cables connecting the underwater deep-sea equipment and the floating equipment on the surface is very long, resulting in a large weight of pipes and cables in the water. In order to reduce the connection force at the end of the pipes and cables and avoid the sharp increase in costs caused by overcoming environmental factors during the manufacturing process of the pipes and cables, the underwater installation of pipes and cables usually adopts an S-shaped underwater layout. The weight of the pipes and cables in the water is reduced by installing buoyancy blocks on the outside of the pipes and cables to avoid the excessive weight in the water pulling off the joint position.

[0003] In many deep-water dynamic flexible pipe and cable connection sites, an integral buoyancy module is generally used. The buoyancy material is made into two half-tiles and fixed with fastening bolts at the position where the flexible pipe and cable need buoyancy. With this type of installation method, there will be no contact between the float and the outer wall of the pipe and cable, so it is necessary to rely on a strong clamp to fix it so that the float structure can clamp the clamp and there will be no movement to cause buoyancy changes. Generally, the clamp is clamped to the outside of the pipe and cable by bolts and clasps. Since the float is wrapped on the outside, the bolts must be very short, otherwise the bolts will press against the external float and cannot be installed. The installation position accuracy also needs to be strictly controlled during on-site installation. However, when the existing card is installed in a dark turn, long bolts are generally used. The bolts will exceed the card, and the excess part needs to be cut, which makes the installation steps cumbersome and prone to unstable installation. Utility Model Content

[0004] The utility model aims to provide a deep-sea cable buoyancy block clamp installation device, which can prevent local bolts from exceeding the inner arc of the clamp body to interfere with the installation of external buoyancy blocks during installation, and has a good fixing effect.

[0005] To achieve the above object, the utility model provides the following technical solution: a clamping and installation device for a buoyancy block fixture of a deep-sea pipe cable, which includes a cylinder block assembly, a buoyancy block fixture, a right jaw assembly, a left jaw assembly and a central pin shaft. Hinged support holes are provided in the middle positions of the right jaw assembly and the left jaw assembly. The central pin shaft passes through the hinged support holes on the right jaw assembly and the left jaw assembly and is fixed by a fixing nut. The fixed end of the cylinder block assembly is movably connected to the tail of the left jaw assembly, and the telescopic end of the cylinder block assembly is movably connected to the tail of the right jaw assembly.

[0006] Further, the left jaw assembly includes an upper left jaw and a lower left jaw, which are fixed by a first short-section steel pipe.

[0007] Further, the right jaw assembly includes an upper right jaw and a lower right jaw, which are fixed by a second short-section steel pipe.

[0008] Further, the upper left jaw, the lower left jaw, the upper right jaw and the lower right jaw are all steel plates with a T-shaped frame structure, and arc-shaped grooves are provided on the inner side of the front parts of the upper left jaw, the lower left jaw, the upper right jaw and the lower right jaw.

[0009] Further, the cylinder block assembly is a hydraulic cylinder.

[0010] Further, the fixed end of the cylinder block assembly is movably connected to the tail of the left jaw assembly by a first screw, and the telescopic end of the cylinder block assembly is movably connected to the tail of the right jaw assembly by a second screw.

[0011] Further, the distance between the upper left jaw and the lower left jaw is larger than the distance between the upper right jaw and the lower right jaw.

[0012] Further, the central pin shaft is a stepped shaft part with threads at both ends.

[0013] Further, the buoyancy block fixture includes multiple card bodies and steel belts. Grooves for placing the steel belts are provided on the outer sides of the card bodies. Clamping hoops are fixed at both ends of the steel belt. A cross-section is provided on the side where the clamping hoop is located. Mounting holes through which connecting screws can pass are provided at the upper and lower ends of the clamping hoop. The connecting screws are fixed on the clamping hoop by locking nuts.

[0014] Further, a groove is provided on the inner surface of the card body, and an anti-slip card pad block is arranged in the groove.

[0015] Advantages of the present utility model: The present utility model uses left and right jaws in the form of a scissors fork driven by a hydraulic cylinder to clamp the clamping hoop. The hydraulic oil pressure extends the cylinder to push the left and right jaws to clamp, so that the steel belt connected to the clamping hoop clamps the outside of the clamping body of the buoyancy block fixture. Then, the connecting screw is passed through the mounting hole of the clamping hoop from the outside clearance of the device, and after passing through, the locking nut is tightened to reach the required torque, completing the installation of the fixture. Through such a dedicated clamping device, the clamping hoop is pre-clamped before installing the connecting screw, preventing the local connecting screws from protruding beyond the inner arc of the buoyancy block fixture and interfering with the installation of the external floating block. The overall structure is compact, and the installation can be completed without using long connecting screws, eliminating the on-site cutting and trimming work after installing the long bolts. The hydraulic force can increase slowly, enabling continuous clamping of the outside of the fixture, ensuring uniform clamping in the circumferential direction of the pipe cable, with good fixing effect, fast installation and construction, and stable and reliable long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present application;

[0017] Figure 2 is a front view of the present application;

[0018] Figure 3 is a schematic structural diagram of the present application when clamping the clamping hoop;

[0019] Figure 4 is a top view of the present application when clamping the clamping hoop.

[0020] Wherein: 1. Right jaw assembly; 11. Upper right jaw, 12. Lower right jaw, 13. Second short-section steel pipe, 2. Left jaw assembly; 21. Upper left jaw, 22. Lower left jaw, 23. First short-section steel pipe, 3. Central pin shaft; 4. Fixed nut; 5. First screw; 6. Hydraulic cylinder; 61. Telescopic end; 62. Fixed end; 7. Buoyancy block fixture; 71. Clamping body, 72. Clamping hoop, 73. Locking nut, 74. Connecting screw, 75. Steel belt, 76. Groove body, 8. Anti-slip clamping pad, 9. Second screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described below with reference to the accompanying drawings. (For better understanding, the orientation of the present utility model is described according to the orientation shown in the drawings and should not be construed as a limitation to the present application; the following terms "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying relative importance.)

[0022] Please refer to Figures 1 to 4, this utility model provides an embodiment: a clamping and installation device for a deep - sea pipe - cable buoyancy block fixture, which includes a cylinder body assembly, a buoyancy block fixture 7, a right jaw assembly 1, a left jaw assembly 2, and a central pin 3. Hinge support holes are provided in the middle positions of both the right jaw assembly 1 and the left jaw assembly 2. The central pin 3 passes through the hinge support holes on the right jaw assembly 1 and the left jaw assembly 2 and is fixed by a fixing nut 4. The fixed end 62 of the cylinder body assembly is movably connected to the tail of the left jaw assembly 2, and the telescopic end 61 of the cylinder body assembly is movably connected to the tail of the right jaw assembly 1. The hinge support holes in the middle of the right jaw assembly 1 and the left jaw assembly 2 are concentrically installed. The swinging of the jaws is realized through the support of the central pin 3. Openings are provided at the tails to meet the connection with the threaded holes of the telescopic end 61 and the fixed end 62 of the cylinder body assembly, and they are fixed together by a first screw 5 and a second screw 9 without being screwed in completely, leaving an appropriate gap to play the role of a shaft pin. Through the installation device of the present application, the clamping hoop 72 outside the buoyancy block fixture 7 can clamp the outside of the clamping body 71 of the buoyancy block fixture 7.

[0023] Please continue to refer to Figure 1 , Figure 3 As shown, in an embodiment of the present utility model, the left jaw assembly 2 includes an upper left jaw 21 and a lower left jaw 22, and the upper left jaw 21 and the lower left jaw 22 are fixed by a first short - section steel pipe 23. The upper left jaw 21 and the lower left jaw 22 can simultaneously clamp the upper and lower ends of the clamping hoop 72 on the left side.

[0024] Please continue to refer to Figure 1 , Figure 3 As shown, in an embodiment of the present utility model, the right jaw assembly 1 includes an upper right jaw 11 and a lower right jaw 12, and the upper right jaw 11 and the lower right jaw 12 are fixed by a second short - section steel pipe 13. The upper right jaw 11 and the lower right jaw 12 can simultaneously clamp the upper and lower ends of the clamping hoop 72 on the right side and can form sufficient clamping force.

[0025] Please continue to refer to Figure 1 , Figure 3As shown in the figure, in one embodiment of the present utility model, the upper left claw 21, the lower left claw 22, the upper right claw 11 and the lower right claw 12 are all steel plates with a T-shaped frame structure. An arc-shaped groove is provided on the inner side of the front part of the upper left claw 21, the lower left claw 22, the upper right claw 11 and the lower right claw 12. The left and right claws in the form of a scissors fork driven by the hydraulic cylinder 6 clamp the clamping hoop 72 of the buoyancy block fixture 7. The oil cylinder is extended by the oil pressure to push the left and right claws to clamp, so that the clamping hoop 72 clamps the outside of the clamping body 71 of the buoyancy block fixture 7. Then, the connecting screw 74 is inserted into the mounting hole of the clamping hoop 72 from the outside neutral gear of the device, and after passing through, the locking nut 73 is tightened to reach the required torque, completing the installation of the fixture. Through such a special clamping device, the clamping hoop 72 is pre-clamped and then the connecting screw 74 is installed, so that there will be no interference with the installation of the external floating block due to the local bolt exceeding the outer arc of the clamping body 71. The overall structure is compact, and the installation can be completed without using long bolts, eliminating the on-site cutting and trimming work after the installation of long bolts. The hydraulic force can be increased slowly and evenly tightened, and the fixing effect is good.

[0026] Please continue to refer to Figure 1 、 Figure 3 As shown in the figure, in one embodiment of the present utility model, the cylinder block assembly is the hydraulic cylinder 6. The hydraulic cylinder 6 is a double-acting cylinder, and the extension or retraction of the telescopic end 61 of the cylinder is realized by injecting oil into different oil ports through a hydraulic pump station. The structural form is a cylinder with a piston rod similar to the front-end connecting earring form, mainly divided into the telescopic end 61 and the fixed end 62 of the piston rod. Injecting oil into the rodless cavity makes the 6.1 - piston rod assembly extend, and vice versa. Different from the general hydraulic cylinder 6, there are mounting seats on the telescopic end 61 and the fixed end 62 that meet the connection of the right claw assembly 1 and the left claw assembly 2, and a hinged fixation is formed by fixing with the first screw 5 and the second screw 9.

[0027] Please continue to refer to Figure 1 、 Figure 3 As shown in the figure, in one embodiment of the present utility model, the fixed end 62 of the cylinder block assembly is movably connected to the tail of the left claw assembly 2 through the first screw 5, and the telescopic end 61 of the cylinder block assembly is movably connected to the tail of the right claw assembly 1 through the second screw 9. The screws are stainless steel screws with internal hexagons or external hexagons, and are screwed into the threaded holes of the telescopic end 61 and the fixed end 62 of the hydraulic cylinder 6 to fix the tail of the right claw assembly 1 to the threaded hole of the telescopic end 61 of the cylinder block assembly, and the left claw assembly 2 to the threaded hole of the fixed end 62.

[0028] Please continue to refer to Figure 2. In one embodiment of the present utility model, the distance between the upper left claw 21 and the lower left claw 22 is larger than the distance between the upper right claw 11 and the lower right claw 12.

[0029] Please continue to refer to Figures 1 to 4As shown, in an embodiment of the present utility model, the central pin shaft 3 is a stepped shaft piece with threads at both ends. The central pin shaft 3 is a stepped shaft piece with threads at both ends, and the threads at both ends are adapted to be connected to the fixing nuts 4. The whole passes through the hinge support holes of the right and left jaws, forming a rotating shaft for the swinging of the jaws on both sides. The left and right jaws swing in a scissor form to realize the clamping and loosening of the clamping hoop 72. The fixing nut 4 is a stainless steel nut with an anti-loosening function, which is tightened at the end of the central pin shaft 3 to fix the left jaw assembly 2 and the right jaw assembly 1 together to realize swinging along the central pin shaft 3.

[0030] Please continue to refer to Figure 3 As shown, in an embodiment of the present utility model, the buoyancy block fixture 7 includes a plurality of clamping bodies 71 and a steel belt 75. Grooves 76 for placing the steel belt 75 are formed on the outer sides of the clamping bodies 71. Clamping hoops 72 are fixed at both ends of the steel belt 75. A cross-section is formed on the side where the clamping hoop 72 is located. Mounting holes through which connecting screws 74 can pass are formed at the upper and lower ends of the clamping hoop 72. The connecting screws 74 are fixed to the clamping hoop 72 through locking nuts 73.

[0031] Please continue to refer to Figure 3 As shown, in an embodiment of the present utility model, a groove is formed on the inner surface of the clamping body 71, and an anti-slip clamping pad 8 is arranged in the groove. The anti-slip clamping pad 8 has a fixing and anti-slip effect.

[0032] The working principle of the present utility model is as follows: According to the installation dimensions of the buoyancy block fixture and the requirements of the clamping force, combined with the dimensions of the cylindrical platform of the clamping hoop, the installation device of the present utility model is designed. The design and manufacture of the right claw assembly, the left claw assembly, and the central pin are completed. The right claw assembly is embedded in the middle of the left claw assembly, and the central pin passes through the middle hole of the T-shaped arm and is locked at both ends with fixing nuts to form a scissor-type claw structure. The hydraulic cylinder is connected to the upper part of the scissor-type claw. The opening at the tail of the right claw assembly is connected to the threaded hole at the telescopic end of the hydraulic cylinder and fixed together by the second screw. The second screw is not screwed in completely, leaving an appropriate gap to achieve the effect of a shaft pin. The opening at the tail of the left claw assembly is connected to the threaded hole on the fixed end of the hydraulic cylinder by the first screw. The first screw is not screwed in completely, leaving an appropriate gap to achieve the effect of a middle pin. Through such an installation combination, the manufacture of the clamping installation device is completed. At the position where the buoyancy block fixture needs to be installed, the clamping installation device is prepared in advance, the pipeline of the hydraulic pump station is connected to the oil inlet and outlet of the hydraulic cylinder, and the equipment is tested to operate normally. The pre-installed buoyancy block fixture is sleeved on the cable, and the multiple clamping bodies are adjusted to be aligned and the upper parts are kept flush. The right claw assembly 1 and the left claw assembly are respectively clamped on the grooves on both sides of the clamping hoop. The hydraulic pump station is operated to make the telescopic end of the hydraulic cylinder extend, and the right claw assembly and the left claw assembly are tightened against each other to exert a tightening force on the clamping hoop. Since the steel strip of the clamping hoop surrounds the outside of the clamping body, the clamping hoop clamps the multiple clamping bodies, and there is no need for long bolts to realize the clamping of the cable by the multiple clamps. Keep the clamping force of the installation device, insert a connecting screw respectively from the upper and lower parts of the clamping hoop into the holes of the connecting columns at both ends of the clamping hoop, then screw in the locking nut and tighten it to the required torque to complete the installation of the clamping hoop. After checking without errors, the telescopic end of the hydraulic cylinder retracts, and the installation device of the present utility model is removed to complete the installation of the buoyancy block fixture.

[0033] The above are only the preferred embodiments of the present utility model, and should not be construed as limiting the present application. Any equivalent changes and modifications made in accordance with the scope of the patent application of the present utility model shall fall within the scope covered by the present utility model.

Claims

1. A deep-sea cable buoyancy block clamping and installation device, characterized in that: It includes a cylinder assembly, a buoyancy block clamp, a right claw assembly, a left claw assembly and a center pin shaft. The middle positions of the right claw assembly and the left claw assembly are each provided with a hinge support hole. The center pin shaft passes through the hinge support holes on the right claw assembly and the left claw assembly and is fixed by a fixing nut. The fixed end of the cylinder assembly is movably connected to the tail of the left claw assembly, and the telescopic end of the cylinder assembly is movably connected to the tail of the right claw assembly.

2. A deep-sea cable buoyancy block clamping and installation device according to claim 1, characterized in that: The left clamping jaw assembly comprises an upper left clamping jaw and a lower left clamping jaw, and the upper left clamping jaw and the lower left clamping jaw are fixed by a first short section of steel pipe.

3. A deep-sea cable buoyancy block clamping and installation device according to claim 2, characterized in that: The right clamping jaw assembly comprises an upper right clamping jaw and a lower right clamping jaw, and the upper right clamping jaw and the lower right clamping jaw are fixed by a second short section of steel pipe.

4. A deep-sea cable buoyancy block clamping and installation device according to claim 3, characterized in that: The upper left clamping jaw, the lower left clamping jaw, the upper right clamping jaw and the lower right clamping jaw are all steel plates of T-shaped frame structure, and an arc groove is opened on the inner side of the front part of the upper left clamping jaw, the lower left clamping jaw, the upper right clamping jaw and the lower right clamping jaw.

5. A deep-sea cable buoyancy block clamping and installation device according to claim 1, characterized in that: The cylinder assembly is a hydraulic cylinder.

6. A deep-sea cable buoyancy block clamping and installation device according to claim 1, characterized in that: The fixed end of the cylinder assembly is movably connected to the tail of the left clamping claw assembly through a first screw, and the telescopic end of the cylinder assembly is movably connected to the tail of the right clamping claw assembly through a second screw.

7. A deep-sea cable buoyancy block clamping and installation device according to claim 4, characterized in that: The distance between the upper left clamping claw and the lower left clamping claw is greater than the distance between the upper right clamping claw and the lower right clamping claw.

8. A deep-sea cable buoyancy block clamping and installation device according to claim 1, characterized in that: The central pin is a stepped shaft with threads at both ends.

9. A deep-sea cable buoyancy block clamping and installation device according to claim 1, characterized in that: The buoyancy block clamp includes multiple clamp bodies and steel belts. The outer sides of the clamp bodies are provided with grooves for placing the steel belts. Both ends of the steel belts are fixed with clamping hoops. A cross-section is provided on one side where the clamping hoops are located. The upper and lower ends of the clamping hoops are provided with mounting holes for passing connecting screws. The connecting screws are fixed to the clamping hoops by locking nuts.

10. A deep-sea cable buoyancy block clamping and installation device according to claim 9, characterized in that: A groove is formed on the inner surface of the card body, and an anti-skid card pad is arranged in the groove.

Images