Embedded towrope limiting device

Abstract

The utility model discloses an embedded type towing cable limiting device which comprises a guide plate, a mounting shaft and a plurality of shackles, a limiting groove is formed in a ship deck area, the guide plate is mounted in the limiting groove through the mounting shaft, and the guide plate can rotate along the mounting shaft and is integrally arranged in the limiting groove to form a storage state. One rotating end extends out of the limiting groove to form a working state, the multiple shackles are movably connected in sequence, and the shackle at the head of the multiple shackles is movably connected into a connecting hole in one end of the guide plate; the device further comprises a towing cable connecting piece, the towing cable connecting piece is movably connected to the shackle at the tail of the shackles, an open hole is formed in the towing cable connecting piece, a roller part capable of rotating is arranged on the open hole, the towing cable is arranged between the open hole and the roller part in a penetrating mode, and the roller part is matched with the open hole to press the towing cable. First base plates are arranged between the two sides of the guide plate and the limiting grooves correspondingly. Second base plates are arranged between the two sides of the connecting hole in one end of the guide plate and the shackles respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of ship structures, in particular to an embedded towing cable limiting device. Background Art

[0002] Ship towing is a routine operation in marine engineering. Ship towing capabilities are required in areas such as ship salvage, cargo transportation, port entry and exit, and shipbuilding.

[0003] When a ship is towing, the towing cable's limiting device can restrict the towing cable to move within a certain angle, which not only ensures the stability of the cable's force direction, but also protects the ship's crew.

[0004] Under normal circumstances, in order to meet the limit requirements, the towline is usually limited by welding a ship shackle or an eye plate directly on the deck surface.

[0005] This protruding limit device arranged on the deck surface not only affects the flatness of the deck surface and the safety of crew operations, but also limits the longitudinal position of the cable and has a poor effect on the lateral position of the cable.

[0006] Therefore, in order to reduce the above-mentioned impact, an embedded tow cable limiting device is needed to solve the above-mentioned defects.

[0007] For example, publication number CN202186488U discloses a towline limiter for an anchor-handling tugboat, comprising a first shackle, a limiter body, a storage recess, a mounting pin, and a second shackle; the limiter body has a rectangular cross-section, the storage recess has a rectangular open recess, is arranged on the centerline of the main deck of the tugboat, and is 1 / 5-1 / 20 of the length of the tugboat from the stern, and the length and width of the storage recess match the length and width of the limiter body; the limiter body is installed in the storage recess by a mounting pin, and the mounting pin is a rotating shaft; the first shackle is movably connected to the limiter body, the second shackle is movably connected to the first shackle, and the towing wire rope is connected to the second shackle.

[0008] In the above-mentioned tow rope limiter, the limiter body is installed in the storage recess through the installation pin, and the first shackle is directly connected to the limiter body. For the position connected to the tow rope, the tow rope is also directly connected through the second shackle.

[0009] In actual use, the towed object will be affected by wind and waves, and will have a movement tendency inconsistent with the tugboat, so that the towline will also swing left and right (relative to the port and starboard of the tugboat) and reciprocate, which can drive the limiter body to move along the mounting pin and frequently abut and rub against the storage recess. In addition, due to the frequent movement and friction between the first shackle and the limiter body, the reciprocating towline will also repeatedly rub against the second shackle.

[0010] The frequent friction may affect or even destroy the structural strength of the above components, thereby reducing the reliability and service life of the entire limiter.

[0011] Furthermore, the limiter body is made directly from thick steel plate, and its primary load direction is single (i.e., it can only withstand towline loads in a direction parallel to the main body surface, and is less effective in resisting towline loads in the direction of the plate thickness). Therefore, the aforementioned towline limiter installation method can only limit the left-right swaying of the towline, but the longitudinal tensile loads generated by towline operations such as retrieval, release, and towing will directly damage the limiter body. Utility Model Content

[0012] In view of the above-mentioned technical problems existing in the existing towline limiters, the purpose of the utility model is to provide an embedded towline limit device, which can reduce friction by arranging a roller part to press the towline so that the roller part can roll when the towline moves back and forth; the limiting guide plate adopts a customized triangular eye plate type, and pads are respectively provided between the guide plate and the limiting groove and the shackle, which can not only avoid the guide plate from directly and repeatedly rubbing against the limiting groove and the shackle, causing damage, but also can effectively transfer the lateral load borne by the limiting guide plate to the hull reinforcement structure, thereby greatly improving the reliability of the limiting device.

[0013] In order to achieve the above-mentioned object, the utility model provides an embedded towing cable limiting device, comprising a guide plate, a mounting shaft, and a plurality of shackles. The ship deck area is provided with a limiting groove, the guide plate is installed in the limiting groove via the mounting shaft, and the guide plate can be rotated along the mounting shaft and placed as a whole in the limiting groove to form a storage state, and can be extended out of the limiting groove by rotating one end to form a working state. The plurality of shackles are movably connected in sequence, and the shackle at the head of the plurality of shackles is movably connected to the connecting hole at one end of the guide plate;

[0014] The invention is characterized in that it further comprises a towline connecting member, wherein the towline connecting member is movably connected to a shackle at the tail end of the plurality of shackles, the towline connecting member is provided with an opening, the opening is provided with a rotatable roller portion, the towline is passed through the opening and the roller portion, and the roller portion cooperates with the opening to compress the towline;

[0015] A first pad is provided between the two sides of the guide plate and the limiting groove;

[0016] Second pads are respectively provided between the two sides of the connecting hole at one end of the guide plate and the shackle.

[0017] Furthermore, the guide plate includes a first connecting part and a second connecting part. The first connecting part is a sleeve structure. The axial length of the first connecting part is less than the axial length of the mounting shaft. The first connecting part is sleeved on the mounting shaft, and the first connecting part can move axially along the mounting shaft and rotate relative to the mounting shaft. The second connecting part is a triangular plate structure and is provided with a connecting hole for connecting to the shackle.

[0018] Furthermore, the two first pads are respectively sleeved on the mounting shaft and located on both sides of the first connecting portion, and can block the gap between the first connecting portion and the limiting groove to limit the axial movement of the first connecting portion relative to the mounting shaft.

[0019] Furthermore, the direction of the central through hole of the first connecting part in the guide plate is perpendicular to the midship line, the direction of the connecting hole in the second connecting part is parallel to the midship line, the direction of the opening of the tow cable connector is the same as the direction of the central through hole of the first connecting part, and the opening can be used for the tow cable to pass through, so that the direction of the tow cable is perpendicular to the direction of the connecting hole of the second connecting part.

[0020] Furthermore, the several shackles have the same structure, all consisting of a U-shaped ring and a cross bar, the cross bar is connected to the open end of the U-shaped ring, the cross bar of the shackle at the head can be movably inserted into the connecting hole of the second connecting part, and the two second pads are respectively mounted on the two ends of the cross bar and are located between the U-shaped ring and the second connecting part, which can block the gap between the second connecting part and the U-shaped ring to limit the movement of the cross bar along the connecting hole.

[0021] Furthermore, a positioning recess is provided on the circumference of the surface of the roller portion. The positioning recess is an arc-shaped structure and is adapted to the towline. The towline is passed through the positioning recess.

[0022] Furthermore, a sunken cover plate is provided at the notch of the limiting groove.

[0023] Furthermore, a drain outlet is provided inside the limiting groove.

[0024] The embedded towing cable limiting device provided by the utility model is provided with a roller part that is pressed against the towing cable so that the roller part can roll when the towing cable moves back and forth, thereby reducing friction. Pads are provided between the guide plate and the limiting groove and the shackle respectively to avoid the guide plate directly and repeatedly rubbing against the limiting groove and the shackle, causing damage, thereby greatly improving the reliability of the limiting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of the embedded tow cable limiting device provided by the utility model when it is actually used;

[0027] Figure 2 This is a schematic diagram of the overall structure of the embedded tow cable limiting device provided by the utility model;

[0028] Figure 3 for Figure 2 Schematic diagram of the A direction;

[0029] Figure 4 This is a schematic structural diagram of the guide plate in the first direction of the embedded tow cable limiting device provided by the utility model;

[0030] Figure 5 This is a schematic structural diagram of the second direction of the guide plate in the embedded tow cable limiting device provided by the present invention;

[0031] Figure 6 A schematic diagram of a sunken cover plate and a drain outlet in the embedded tow cable limiting device provided by the present invention;

[0032] Figure 7 This is a schematic structural diagram from a first perspective of a tow cable connector in the embedded tow cable limiting device provided by the present invention;

[0033] Figure 8 This is a schematic structural diagram from a second perspective of the tow cable connector in the embedded tow cable limiting device provided by the present invention.

[0034] Illustration:

[0035] Guide plate 100, mounting shaft 200, shackle 300, towline connector 400, limiting groove 500, towline 600, first pad 700, second pad 800;

[0036] The first connecting portion 110 , the central through hole 111 , the second connecting portion 120 , the connecting hole 121 , the sunken cover 130 , the drain outlet 140 , the U-shaped ring 310 , the cross bar 320 , the opening 410 , the roller portion 420 , and the positioning recess 421 . DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0038] See also Figures 1-8 , which is a schematic structural diagram of the embedded tow cable 600 limiting device provided by the present invention.

[0039] The limiting device provided by the present invention is applied to the towline 600 to limit the movement of the towline 600 within a certain angle, and the limiting device is buried under the deck to ensure that the deck surface is flat.

[0040] As can be seen from the figures, the embedded tow cable 600 limiting device provided by the present invention includes four components: a guide plate 100, a mounting shaft 200, a plurality of shackles 300, and a tow cable connector 400.

[0041] A limiting groove 500 is provided in the deck area of the ship, and the guide plate 100 is installed in the limiting groove 500 via the installation shaft 200. The guide plate 100 can rotate along the installation shaft 200 and be placed as a whole in the limiting groove 500 to form a storage state, and can extend one end out of the limiting groove 500 by rotating to form a use state. A plurality of shackles 300 are movably connected in sequence, and the shackle 300 at the head of the plurality of shackles 300 is movably connected to the connection hole 121 at one end of the guide plate 100.

[0042] like Figure 7 ,like Figure 8 The towline connector 400 is movably connected to the tail shackle 300 among the plurality of shackles 300. The towline connector 400 is provided with an opening 410. The opening 410 is provided with a rotatable roller portion 420. The towline 600 is passed between the opening 410 and the roller portion 420. The roller portion 420 cooperates with the opening 410 to compress the towline 600.

[0043] First pads 700 are respectively provided between the two sides of the guide plate 100 and the limiting groove 500 ; second pads 800 are respectively provided between the two sides of the connecting hole 121 at one end of the guide plate 100 and the shackle 300 .

[0044] The first pad 700 and the second pad 800 may be marine steel plates of sufficient thickness, or may be nylon plates that are more wear-resistant and corrosion-resistant.

[0045] Compared with the prior art, the limiter body is installed in the storage recess by means of a mounting pin and the towing cable is directly connected to the shackle. Due to the movement, the limiter body and the storage recess, as well as the towing cable and the shackle, frequently rub against each other, resulting in reduced structural strength or even damage.

[0046] The limiting device provided by the present invention is provided with a towline connector 400 to connect with the towline 600, and the roller portion 420 in the towline connector 400 is pressed against the towline 600, so that the roller portion 420 can roll when the towline 600 moves back and forth, thereby reducing friction, and a first pad 700 and a second pad 800 are respectively provided between the guide plate 100 and the limiting groove 500 and the shackle 300, so as to prevent the guide plate 100 from directly and repeatedly rubbing against the limiting groove 500 and the shackle 300, thereby preventing damage.

[0047] Specifically, the limiting groove 500 is a square groove, which is larger than the guide plate 100 and is used to accommodate the guide plate 100 .

[0048] Furthermore, the guide plate 100 is installed in the limiting groove 500 through the installation shaft 200. In this embodiment, the installation shaft 200 is preferably a shaft pin. The installation shaft 200 is fixed in the limiting groove 500 to support the guide plate 100.

[0049] This solution does not limit the connection method between the installation shaft 200 and the limiting groove 500, which can be determined according to actual needs. For example, in this embodiment, a detachable connection method such as bolt connection is preferably adopted.

[0050] like Figure 4 , Figure 5 The guide plate 100 includes a first connecting portion 110 and a second connecting portion 120 . The first connecting portion 110 is used to cooperate with the mounting shaft 200 , and the second connecting portion 120 is used to cooperate with the shackle 300 .

[0051] The first connecting part 110 is a sleeve structure, and the diameter of its central through hole 111 is adapted to the diameter of the mounting shaft 200. The axial length of the first connecting part 110 is smaller than the axial length of the mounting shaft 200. The first connecting part 110 is sleeved on the mounting shaft 200, and the first connecting part 110 can move axially along the mounting shaft 200 and rotate relative to the mounting shaft 200.

[0052] The second connecting portion 120 is a triangular plate structure and is provided with a connecting hole 121 for connecting with the shackle 300 .

[0053] The guide plate 100 of such a structure cooperates with the first pad 700, as shown in FIG. Figure 3 The two first pads 700 are respectively sleeved on the mounting shaft 200 and located on both sides of the first connecting portion 110, and can block the gap between the first connecting portion 110 and the limiting groove 500 to limit the axial movement of the first connecting portion 110 relative to the mounting shaft 200;

[0054] The above structure not only avoids direct friction between the first connecting portion 110 and the limiting groove 500 to improve the reliability and service life of the component, but also allows the lateral load of the tow cable 600 to be transferred to the limiting groove 500 through the first pad 700, thereby increasing the lateral load of the limiting device.

[0055] Further, if Figure 1In this example, the central through hole 111 of the first connecting portion 110 of the guide plate 100 is oriented perpendicular to the amidships line, the connecting hole 121 of the second connecting portion 120 is oriented parallel to the amidships line, the plurality of shackles 300 are movably connected in sequence, and the cross-sections of adjacent shackles 300 are perpendicular to each other. The opening 410 of the towline connector 400 is oriented in the same direction as the central through hole 111 of the first connecting portion 110, and the opening 410 allows the towline 600 to pass through, such that the direction of the towline 600 is perpendicular to the direction of the connecting hole 121 of the second connecting portion 120.

[0056] In actual use of the limiter device with this arrangement, after the load of the towline 600 is transferred to the guide plate 100 via the towline connector 400 and the shackle 300, the transverse load can be transferred to the limiter groove 500 and the hull reinforcement structure via the first pad 700, and the longitudinal load can be transferred to the limiter groove 500 and the hull reinforcement structure via the mounting shaft 200. The load of the towline 600 can be effectively transferred to the hull reinforcement structure, greatly improving the reliability of the limiter device.

[0057] Further, if Figure 1 , several shackles 300 have the same structure, and are all composed of a U-shaped ring 310 and a cross bar 320. The cross bar 320 is connected to the open end of the U-shaped ring. The cross bar 320 of the shackle 300 at the head is movably inserted into the connecting hole 121 of the second connecting part 120;

[0058] like Figure 1 , Figure 2 The two second pads 800 are respectively mounted on both ends of the cross bar 320 and are located between the U-shaped ring 310 and the second connecting portion 120. They can block the gap between the second connecting portion 120 and the U-shaped ring 310 to limit the movement of the cross bar 320 along the connecting hole 121. The effects and functions thereof are the same as those of the above-mentioned first pad 700 and will not be elaborated here.

[0059] This solution does not limit the number of shackles 300 , and a corresponding number of shackles 300 can be provided as needed to ensure the limiting effect.

[0060] The roller portion 420 is rotatably disposed in the opening 410 of the streamer connector 400 for rotating and sliding friction to reduce wear on the streamer 600 .

[0061] This solution does not limit the specific connection structure between the roller part 420 and the opening 410, which can be determined according to actual needs. For example, the roller part 420 can be mounted and fixed on a pin shaft, and both ends of the pin shaft are arranged in the opening 410 through a bearing assembly. In this way, the pin shaft can follow the inner ring of the bearing assembly to rotate axially relative to the outer ring, thereby causing the roller part 420 fixed on the pin shaft to rotate.

[0062] In order to further improve the stability of the streamer 600 connected to the streamer connector 400, as shown in FIG. Figure 8 A positioning recess 421 is provided on the circumferential surface of the roller portion 420 . The positioning recess 421 is an arc-shaped structure and is adapted to the towline 600 . The towline 600 is passed through the positioning recess 421 . The positioning recess 421 can guide and limit the towline 600 .

[0063] Further, if Figure 6 In order to ensure the flatness of the deck, a sunken cover plate 130 is provided at the notch of the limiting groove 200 so that the notch of the limiting groove 200 is flush with the deck. The sunken cover plate 130 is preferably connected to the deck with bolts;

[0064] Furthermore, in order to ensure that there is no water accumulation in the limiting groove 200 of the limiting device in a marine operating environment, a drain outlet 140 is provided inside the limiting groove 200 to ensure that the accumulated water in the limiting groove 200 can be drained at any time.

[0065] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An embedded towline limiting device, comprising a guide plate, a mounting shaft, and a plurality of shackles. A limiting groove is provided on the deck area of the vessel, and the guide plate is mounted in the limiting groove via the mounting shaft. The guide plate can rotate along the mounting shaft and be integrally positioned in the limiting groove to form a stored state, and can rotate one end to extend out of the limiting groove to form an operating state. The plurality of shackles are movably connected in sequence, and the first shackle among the plurality of shackles is movably connected to a connecting hole at one end of the guide plate. It is characterized by: The towline connector is movably connected to a shackle at the tail end of the plurality of shackles. The towline connector is provided with an opening, and a rotatable roller is provided on the opening. The towline is passed through the opening and the roller, and the roller cooperates with the opening to tighten the towline. A first pad is provided between the two sides of the guide plate and the limiting groove; Second pads are respectively provided between the two sides of the connecting hole at one end of the guide plate and the shackle.

2. The embedded tow cable limiting device according to claim 1, characterized in that: The guide plate includes a first connecting part and a second connecting part. The first connecting part is a sleeve structure. The axial length of the first connecting part is less than the axial length of the mounting shaft. The first connecting part is sleeved on the mounting shaft, and the first connecting part can move axially along the mounting shaft and rotate relative to the mounting shaft. The second connecting part is a triangular plate structure and is provided with a connecting hole for connecting to the shackle.

3. The embedded tow cable limiting device according to claim 2, characterized in that: The two first pads are respectively sleeved on the installation shaft and located on both sides of the first connection part, and can block the gap between the first connection part and the limiting groove to limit the axial movement of the first connection part relative to the installation shaft.

4. The embedded tow cable limiting device according to claim 2, characterized in that: The direction of the central through hole of the first connecting part in the guide plate is perpendicular to the midship line, the direction of the connecting hole in the second connecting part is parallel to the midship line, the direction of the opening of the tow cable connector is the same as the direction of the central through hole of the first connecting part, and the opening can be used for the tow cable to pass through, so that the direction of the tow cable is perpendicular to the direction of the connecting hole of the second connecting part.

5. The embedded tow cable limiting device according to claim 1, characterized in that: The several shackles have the same structure and are all composed of a U-shaped ring and a cross bar. The cross bar is connected to the open end of the U-shaped ring. The cross bar of the shackle at the head can be movably inserted into the connecting hole of the second connecting part. The two second pads are respectively mounted on the two ends of the cross bar and are located between the U-shaped ring and the second connecting part. They can block the gap between the second connecting part and the U-shaped ring to limit the movement of the cross bar along the connecting hole.

6. The embedded tow cable limiting device according to claim 1, characterized in that: The roller portion is provided with a positioning recess in the circumference thereof. The positioning recess is an arc-shaped structure and is adapted to the towline. The towline is passed through the positioning recess.

7. The embedded tow cable limiting device according to claim 1, characterized in that: A sunken cover plate is provided at the notch of the limiting groove.

8. The embedded tow cable limiting device according to claim 1, characterized in that: A drainage outlet is arranged inside the limiting groove.

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