A protective clamp for installing large-scale high-precision offshore wind power cables

Abstract

The present invention relates to a protective clamp for installing large-scale high-precision offshore wind power submarine cables, which is applied in the field of cable installation. The protective clamp can provide a restrictive displacement space for the cable body when the wind blows by utilizing the cooperation of an arc-shaped part and an extrusion spring, thereby achieving a preliminary windproof protection effect. Afterwards, under the rotation of the fan blade part, the rotating rod is driven to rotate, thereby indirectly driving the slider to reciprocate on the surface of the guide rod. When the cable body is stretched and squeezed to extrude the arc-shaped part, the cable body is acted upon by the slider, so that the cable body can be in a cyclic retracted and extended state when stretched, thereby avoiding a long-term stretched state when encountering windy weather, thereby effectively protecting the service life of the cable body. In addition, in conjunction with the reciprocating retraction and extension of the cable body, the movable plugging piece in the rolling tube can be driven to rise and fall, thereby realizing the suction and replacement of the gas inside the rolling tube, and then realizing the continuous renewal of the heat exchange gas, thereby reducing the aging of the cable body caused by the heat generated when it is in frictional contact with the surface of the arc-shaped part.

Description

Technical Field

[0001] The invention relates to a protective clamp for wind power submarine cable installation, in particular to a protective clamp for large offshore high-precision wind power submarine cable installation applied in the field of cable installation. Background Art

[0002] During use, wind power submarine cables will be affected by wind force and swing repeatedly, which may cause the cable to break. Therefore, when installing wind power submarine cables, clamps are needed to limit the movement of the cables to protect their safety.

[0003] The specification of Chinese invention patent CN202210879595.7 discloses a windproof and anti-break device for transmission cables, which strengthens the cable structure in a targeted manner by designing terminal windproof components, supporting windproof components, etc., so as to achieve reliable protection against wind and breakage at key positions; improve the windproof and anti-breakage effect of the entire transmission line, and the terminal windproof component is installed on the assembly frame of the last transmission tower, and the supporting windproof component is installed on the assembly frame of the middle transmission tower; the terminal windproof component includes a wire clamp and a clamp; one end of the clamp is connected to the wire clamp, and the other end of the clamp is connected to the cable; the supporting windproof component includes a fixed clamp and a movable clamp, the fixed clamp is L-shaped, and the movable clamp is movably set on the horizontal plate of the fixed clamp through an adjustment mechanism, and the side surface of the horizontal plate of the fixed clamp is provided with a fixing device for fixing the adjustment mechanism.

[0004] When existing cables are installed, a section is reserved to form a downward bend in the middle of the cable. When the cable swings due to strong wind, the protective device will reel in both ends of the cable to straighten the middle part of the cable, thereby restraining the cable from swinging. However, in actual operation, the protective device continues to keep both ends of the cable taut during the wind, which will cause the surface of the cable to be in a stretched state for a long time, making it easy for the surface of the cable to crack during subsequent use, affecting the service life of the cable. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to provide an effective protective treatment when installing a wind power submarine cable to prevent the wind power submarine cable from remaining in a taut state for a long time when the wind power submarine cable swings due to wind force, thereby protecting the service life of the wind power submarine cable.

[0006] In order to solve the above problems, the present invention provides a protective clamp for installing a large offshore high-precision wind power submarine cable, comprising a base box and a matching upper cover box, wherein a cable body is installed in a sliding manner inside the base box, a bottom wall of the base box is provided with a point-symmetrically arranged moving groove, a support rod is slidably connected inside the moving groove, an arc-shaped member is fixedly sleeved on the outer side of the support rod, a point-symmetrically arranged extrusion spring is installed on the inner wall of the base box, and the tail ends of the two extrusion springs are respectively connected to the surfaces of the two arc-shaped members, and a point-symmetrically arranged crank rocker unit is installed on the bottom wall of the base box, and the two crank rocker units are respectively located on the outer sides of the two extrusion springs;

[0007] The crank rocker unit includes a guide rod fixedly connected to the bottom wall of the base box, the top of the guide rod is rotatably connected to the plug-in rod through a bearing, the surface of the plug-in rod is fixedly sleeved with a rotating rod, the tail end of the rotating rod is connected to a follower rod through a shaft, the tail end of the follower rod is connected to a slider through a shaft, and the bottom of the slider is slidably connected to the surface of the guide rod, and two point-symmetrically arranged fan blade members are installed through the top of the upper cover box, the bottom of the fan blade member is connected to a cross plate, and the top of the plug-in rod is provided with a plug-in groove matching the cross plate.

[0008] In the above-mentioned protective clamp for installing large-scale high-precision offshore wind power cables, when the wind power cables are installed, a crank rocker unit is used to prevent the wind power cables from being kept in a taut state for a long time when the wind power cables are swinging due to wind force, thereby protecting the service life of the wind power cables.

[0009] As a further improvement of the present application, the top of the guide rod fits with the bottom of the arc-shaped member, and the sum of the lengths of the follower rod and the rotating rod is smaller than the horizontal distance between the plug-in rod and the surface of the arc-shaped member, and the limit ring is made of a head-to-tail splicing structure.

[0010] As a further improvement of the present application, the cable body is wound around the surfaces of the two arc-shaped members, and both ends of the two arc-shaped members are chamfered.

[0011] As a further improvement of the present application, a limiting ring is fixedly sleeved on the surface of the cable body, and in an initial state, a horizontal gap exists between the limiting ring and the connection position between the cable body and the base box.

[0012] As a further improvement of the present application, matching bolts are installed on the outer surfaces of the upper cover box and the base box, and a sealing layer is bonded at the interlocking gap between the upper cover box and the base box after they are connected by bolts.

[0013] As a further improvement of the present application, the lengths of the guide rod, the follower rod and the rotating rod decrease successively, and the installation positions of the fan blade members and the crank rocker units correspond one to one.

[0014] As another improvement of the present application, an arc groove is provided at one end of the two arc-shaped members facing away from the extrusion spring, a rolling tube is fixedly connected inside the arc groove, a ventilation tube is connected to the top of the rolling tube, and the top of the ventilation tube extends to the top of the upper cover box, a linkage rod is installed inside the rolling tube, a screw area is provided on the surface of the linkage rod, a movable blocking piece is threadedly sleeved on the surface of the screw area, and the surface of the movable blocking piece is the same as the inner diameter of the rolling tube, the bottom of the linkage rod extends to the bottom of the rolling tube and is connected to the bottom wall of the base box through a constraint bearing, and a disc is sleeved on the surface of the linkage rod below the rolling tube.

[0015] As another improved supplement of the present application, the thickness of the cable body is greater than the height of the arc-shaped member, and the rolling tube is made of a heat-conducting material.

[0016] As another improvement supplement of the present application, the top of the ventilation pipe is provided with a plurality of air holes located above the upper cover box, and the top of the disc is installed with an arc-shaped outer moving plate located outside the rolling tube, and the arc-shaped outer moving plate and the disc are made of materials with the same friction coefficient.

[0017] To sum up, the present application utilizes the cooperation of the arc-shaped member and the extrusion spring to provide a restrictive displacement space for the cable body when the wind blows, thereby achieving a preliminary windproof protection effect. Afterwards, under the rotation of the fan blade member, the rotating rod is driven to rotate, and indirectly drives the slider to move back and forth on the surface of the guide rod. When the cable body is stretched and squeezes the arc-shaped member, it is acted upon by the slider so that the cable body is in a cyclic retraction and release state in the stretched state. Compared with the existing long-term taut state, the cable body of the present application can avoid the long-term stretched state when encountering windy weather, thereby effectively protecting the service life of the cable body. In addition, in conjunction with the reciprocating retraction and release of the cable body, the movable plug in the rolling tube can be driven to rise and fall, thereby realizing the suction and replacement of the gas inside the rolling tube, and then realizing the continuous renewal of the heat exchange gas, thereby reducing the aging of the cable body caused by the heat generated when it is in friction contact with the surface of the arc-shaped member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall appearance structure of the first and second implementation modes of the present application;

[0019] Figure 2 This is an exploded structural diagram of the base box and the upper cover box of the first embodiment of the present application;

[0020] Figure 3 A top view of a substrate box according to a first embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the crank rocker unit composition of the first embodiment of the present application;

[0022] Figure 5This is a schematic diagram of the installation of the substrate box, the moving groove and the guide rod according to the first embodiment of the present application;

[0023] Figure 6 This is a state diagram of the arc-shaped member of the first embodiment of the present application moving toward the direction of the extrusion spring;

[0024] Figure 7 This is a schematic diagram of the arc-shaped member of the first embodiment of the present application moving away from the direction of the extrusion spring under the push of the slider;

[0025] Figure 8 A top view of an arc-shaped member, a rolling tube, and a substrate box according to a second embodiment of the present application;

[0026] Fig. 9 This is a schematic diagram of the installation of the arc-shaped member, the ventilation pipe and the rolling pipe according to the second embodiment of the present application;

[0027] Fig.10 This is a schematic diagram of the internal structure of the rolling tube according to the second embodiment of the present application;

[0028] Fig.11 This is a schematic diagram of the second embodiment of the present application in which the movable blocking piece descends to drive external gas into the rolling tube.

[0029] Description of the numbers in the figure:

[0030] 1. Base box; 2. Upper cover box; 3. Fan blade; 4. Extrusion spring; 5. Crank rocker unit; 51. Guide rod; 52. Slider; 53. Follower rod; 54. Rotating rod; 55. Connecting rod; 6. Arc-shaped part; 7. Limiting ring; 8. Ventilation pipe; 9. Rolling pipe; 91. Linkage rod; 92. Movable blocking piece; 001. Cable body; 10. Arc-shaped outer moving piece; 11. Disc. DETAILED DESCRIPTION

[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1-3 and Figure 5A protective clamp for installing a large offshore high-precision wind power submarine cable is shown, comprising a base box 1 and a matching upper cover box 2, wherein a cable body 001 is installed in a sliding manner inside the base box 1, a bottom wall of the base box 1 is provided with a point-symmetrically arranged moving groove, a support rod is slidably connected inside the moving groove, an arc-shaped member 6 is fixedly sleeved on the outer side of the support rod, a point-symmetrically arranged extrusion spring 4 is installed on the inner wall of the base box 1, and the tail ends of the two extrusion springs 4 are respectively connected to the surfaces of the two arc-shaped members 6, a point-symmetrically arranged crank rocker unit 5 is installed on the bottom wall of the base box 1, and the two crank rocker units 5 are respectively located on the outer sides of the two extrusion springs 4;

[0034] Figure 4 The crank rocker unit 5 is shown to include a guide rod 51 fixedly connected to the bottom wall of the base box 1, a plug rod 55 is rotatably connected to the top of the guide rod 51 through a bearing, a rotating rod 54 is fixedly sleeved on the surface of the plug rod 55, a follower rod 53 is connected to the tail end of the rotating rod 54 through a shaft, a slider 52 is connected to the tail end of the follower rod 53 through a shaft, and the bottom of the slider 52 is slidably connected to the surface of the guide rod 51, two point-symmetrically arranged fan blade members 3 are installed through the top of the upper cover box 2, a cross plate is connected to the bottom of the fan blade member 3, and a plug groove matching the cross plate is provided on the top of the plug rod 55;

[0035] The surface of the cable body 001 is fixedly sleeved with a limiting ring 7, and in the initial state, there is a horizontal gap between the limiting ring 7 and the connection position between the cable body 001 and the base box 1, and the limiting ring 7 is made of an end-to-end splicing structure;

[0036] The top of the guide rod 51 fits with the bottom of the arc-shaped member 6 , and the sum of the lengths of the follower rod 53 and the rotating rod 54 is smaller than the horizontal distance between the plug-in rod 55 and the surface of the arc-shaped member 6 .

[0037] The lengths of the guide rod 51 , the follower rod 53 and the rotating rod 54 decrease in sequence, and the installation positions of the fan blade member 3 and the crank rocker unit 5 correspond one to one.

[0038] Specifically, when the present application is used to install the wind power submarine cable body 001, the base box 1 and the upper cover box 2 can be fastened first, and the cross plate can be plugged into the plug-in slot, and then the plug-in rod 55 can be driven to rotate synchronously when the fan blade member 3 rotates later;

[0039] Then, the cable body 001 is passed through the interior of the base box 1, and then the strip-shaped limiting ring 7 can be wound around the surface of the cable body 001, and the ends are connected. In this embodiment, the limiting ring 7 and the surface of the cable body 001 can be fixed with glue, and then cement is injected into the inside of the limiting ring 7. After the cement is cured, an effective solidified limiting structure can be formed to limit the overall displacement of the cable body 001;

[0040] In the initial state (i.e., the windless state), the arc-shaped member 6 is located in the center of the base box 1, and the cable body 001 is wound around the surfaces of the two arc-shaped members 6 in an S shape, and at this time, there is a distance between the two limiting rings 7 and the hole on the surface of the base box 1 for penetrating the cable body 001;

[0041] When the wind blows, the wind force will drive the part of the cable body 001 outside the base box 1 to swing, and at this time drive the cable body 001 inside the base box 1 to move outward, exerting a squeezing effect on the arc-shaped member 6 in contact with the winding (such as Figure 6 As shown), the extrusion spring 4 is forced to compress. At the same time, the fan blade 3 is rotated by the wind force, and drives the plug rod 55 engaged with it to rotate. As the plug rod 55 rotates, the rotating rod 54 is driven to rotate, and then the slider 52 is indirectly driven to reciprocate on the surface of the guide rod 51. As the cable body 001 moves out of the base box 1, the arc member 6 gradually approaches the surface of the slider 52. In the process of the reciprocating movement of the slider 52, the arc member 6 can be indirectly reciprocated (as shown in FIG. Figure 7 As shown), the cable body 001 in the taut state can be cyclically retracted and released, so that the cable body 001 can be prevented from being in a taut state for a long time when the wind is limited, thereby protecting the service life of the cable body 001.

[0042] The cable body 001 is wound around the surfaces of the two arc-shaped members 6 , and both ends of the two arc-shaped members 6 are chamfered.

[0043] Specifically, when the cable body 001 is squeezed by wind, it will come into squeeze contact with the surface of the arc-shaped member 6. In order to avoid friction damage to the cable body 001 caused by the right-angle design, the design is chamfered to reduce friction and wear.

[0044] Matching bolts are installed on the outer surfaces of the upper cover box 2 and the base box 1. After the upper cover box 2 and the base box 1 are connected by bolts, a sealing layer is bonded at the buckling gap between the two.

[0045] Specifically, after the upper cover box 2 and the base box 1 are connected by bolts, a sealing layer is arranged at the buckled position of the two, which can enhance the overall sealing inside the present application.

[0046] The second implementation method:

[0047] Figure 8-9It is shown that the ends of the two arc-shaped parts 6 facing away from the extrusion spring 4 are both provided with an arc-shaped groove, and a rolling tube 9 is fixedly connected inside the arc-shaped groove, and the top of the rolling tube 9 is connected to the ventilation tube 8, and the top of the ventilation tube 8 extends to the top of the upper cover box 2, and a linkage rod 91 is installed inside the rolling tube 9, and the surface of the linkage rod 91 is provided with a screw area, and the surface of the screw area is threadedly sleeved with a movable blocking piece 92, and the surface of the movable blocking piece 92 is the same as the inner diameter of the rolling tube 9, and the bottom of the linkage rod 91 extends to the bottom of the rolling tube 9 and is connected to the bottom wall of the base box 1 through a constraint bearing, and the surface of the linkage rod 91 located below the rolling tube 9 is sleeved with a disc.

[0048] The thickness of the cable body 001 is greater than the height of the arc-shaped member 6, and the rolling tube 9 is made of a heat-conducting material.

[0049] The top of the ventilation pipe 8 is provided with a plurality of air holes located above the upper cover box 2. The top of the disc 11 is provided with an arc-shaped outer moving plate 10 located outside the rolling tube 9. The arc-shaped outer moving plate 10 and the disc 11 are made of materials with the same friction coefficient.

[0050] Different from the first embodiment, this embodiment addresses the problem of heat generated when the cable body 001 and the arc-shaped member 6 are in contact and friction, so as to reduce the effect of friction heat on the aging of the surface layer of the cable body 001.

[0051] Specifically, since there is a difference between the diameter of the cable body 001 and the height of the arc-shaped member 6, when the cable body 001 is attached to the bottom wall of the base box 1, the surface of the cable body 001 is in contact with the disc 11 (due to the friction between the two, the non-smooth state, so it can play a driving effect), under the reciprocating pushing action of the slider 52, the arc-shaped member 6 is in a reciprocating pushing (and the constraint bearing is slidably connected to the bottom wall of the base box 1), thereby driving the disc 11 to rotate back and forth, driving the linkage rod 91 to rotate, and then driving the movable blocking piece 92 to move up and down on the surface of the screw area, thereby forming a suction effect (such as Figure 10-11 As shown), the gas inside the rolling tube 9 is replaced, thereby achieving effective heat exchange treatment, thereby reducing the aging effect of friction heat on the cable body 001, thereby comprehensively improving the protection effect of the cable body 001;

[0052] In this embodiment, the diameter of the disc 11 is larger than the diameter of the rolling tube 9, and the central angle corresponding to the arc-shaped outer movable plate 10 is smaller than the central angle corresponding to the chamfer at the other end of the arc-shaped member 6 (so that the arc-shaped outer movable plate 10 has a certain rotation space and will not hit the surface of the arc-shaped member 6 under the friction rotation caused by the retraction and extension of the cable body 001). Therefore, in the subsequent retraction and extension process of the cable body 001, it contacts the arc-shaped outer movable plate 10 and the disc 11 (due to the height limitation of the arc-shaped outer movable plate 10, there is still a fitting part between the cable body 001 and the rolling tube 9) and generates friction, so that the linkage rod 91 connected to the disc 11 rotates, completing the replacement of the gas inside the rolling tube 9, and thereby allowing the contact part of the cable body 001 with the rolling tube 9 to receive heat exchange treatment.

[0053] In summary, the present application utilizes the cooperation of the arc-shaped member 6 and the extrusion spring 4 to provide a restrictive displacement space for the cable body 001 when the wind blows, thereby achieving a preliminary windproof protection effect. Thereafter, under the rotation of the fan blade member 3, the rotating rod 54 is driven to rotate, thereby indirectly driving the slider 52 to reciprocate on the surface of the guide rod 51, and when the cable body 001 is stretched and squeezed to extrude the arc-shaped member 6, the slider 52 is acted upon, so that the cable body 001 is in a cyclic retraction and release state in the stretched state. Compared with the existing long-term tensioned state, the cable body 001 of the present application can prevent the cable body 001 from being in a long-term stretched state when encountering windy weather, thereby effectively protecting the service life of the cable body 001. In addition, in conjunction with the reciprocating retraction and release of the cable body 001, the movable plug 92 in the rolling tube 9 can be driven to rise and fall, thereby realizing the suction and replacement of the gas inside the rolling tube 9, and then realizing the continuous renewal of the heat exchange gas, thereby reducing the aging caused by the heat generated by the cable body 001 when it is in frictional contact with the surface of the arc-shaped member 6.

[0054] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A protective fixture for installing a large offshore high-precision wind power submarine cable, comprising a base box (1) and a matching upper cover box (2), wherein a cable body (001) is installed in a sliding manner through the base box (1). Features: The bottom wall of the substrate box (1) is provided with a point-symmetrically arranged movable groove, a support rod is slidably connected inside the movable groove, an arc-shaped member (6) is fixedly sleeved on the outside of the support rod, the inner wall of the substrate box (1) is provided with a point-symmetrically arranged extrusion spring (4), and the tail ends of the two extrusion springs (4) are respectively connected to the surfaces of the two arc-shaped members (6), and the bottom wall of the substrate box (1) is provided with a point-symmetrically arranged crank rocker unit (5), and the two crank rocker units (5) are respectively located on the outsides of the two extrusion springs (4); The crank rocker unit (5) comprises a guide rod (51) fixedly connected to the bottom wall of the base box (1); the top of the guide rod (51) is rotatably connected to a plug rod (55) via a bearing; the surface of the plug rod (55) is fixedly sleeved with a rotating rod (54); the tail end of the rotating rod (54) is connected to a follower rod (53) via a shaft; the tail end of the follower rod (53) is connected to a slider (52) via a shaft; and the bottom of the slider (52) is slidably connected to the surface of the guide rod (51); two point-symmetrically arranged fan blades (3) are installed through the top of the upper cover box (2); the bottom of the fan blades (3) is connected to a cross plate; the top of the plug rod (55) is provided with a plug groove matching the cross plate; the top of the guide rod (51) is in contact with the bottom of the arc-shaped member (6); and the cable member body (001) is wound around the surfaces of the two arc-shaped members (6).

2. A protective clamp for installing a large offshore high-precision wind power cable according to claim 1, Features: The sum of the lengths of the follower rod (53) and the rotating rod (54) is less than the horizontal distance between the plug-in rod (55) and the surface of the arc-shaped member (6).

3. A protective clamp for installing a large offshore high-precision wind power cable according to claim 1, Features: Both ends of the two arc-shaped parts (6) are chamfered.

4. A protective clamp for installing a large offshore high-precision wind power cable according to claim 1, Features: A limiting ring (7) is fixedly sleeved on the surface of the cable body (001), and in an initial state, a horizontal gap exists between the limiting ring (7) and the connection position between the cable body (001) and the base box (1), and the limiting ring (7) is made of an end-to-end spliced ​​structure.

5. A protective clamp for installing a large offshore high-precision wind power cable according to claim 1, Features: Matching bolts are installed on the outer surfaces of the upper cover box (2) and the base box (1); after the upper cover box (2) and the base box (1) are connected by bolts, a sealing layer is bonded at the buckling gap between the upper cover box (2) and the base box (1).

6. A protective clamp for installing a large offshore high-precision wind power cable according to claim 1, Features: The lengths of the guide rod (51), the follower rod (53) and the rotating rod (54) decrease in sequence, and the installation positions of the fan blade member (3) and the crank rocker unit (5) correspond one to one.

7. A protective clamp for installing a large offshore high-precision wind power cable according to claim 1, Features: The ends of the two arc-shaped members (6) facing away from the extrusion spring (4) are both provided with an arc-shaped groove, a rolling tube (9) is fixedly connected inside the arc-shaped groove, a ventilation tube (8) is connected to the top of the rolling tube (9), and the top of the ventilation tube (8) extends to the top of the upper cover box (2), a linkage rod (91) is installed inside the rolling tube (9), a screw area is provided on the surface of the linkage rod (91), a movable blocking piece (92) is threadedly sleeved on the surface of the screw area, and the surface of the movable blocking piece (92) has the same inner diameter as the rolling tube (9), the bottom of the linkage rod (91) extends to the bottom of the rolling tube (9) and is connected to the bottom wall of the base box (1) via a constraint bearing, and a disc (11) is sleeved on the surface of the linkage rod (91) located below the rolling tube (9).

8. A protective clamp for installing a large offshore high-precision wind power cable according to claim 7, Features: The thickness of the cable body (001) is greater than the height of the arc-shaped member (6), and the rolling tube (9) is made of a heat-conducting material.

9. A protective clamp for installing a large offshore high-precision wind power cable according to claim 7, Features: The top of the ventilation pipe (8) is provided with a plurality of air holes located above the upper cover box (2), and the top of the disc (11) is provided with an arc-shaped outer moving plate (10) located outside the rolling tube (9), and the arc-shaped outer moving plate (10) and the disc (11) are made of materials having the same friction coefficient.

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