Sunken ship salvage grab bucket

Abstract

The utility model relates to the technical field of ocean machinery, and discloses a sunken ship salvage grab bucket which comprises a top connecting piece, a plurality of bottom grab bucket sets and a lifting connecting structure, each bottom grab bucket set comprises a vertical connecting frame and two bucket valves symmetrically arranged on the two sides of the vertical connecting frame, one ends of the two bucket valves are hinged to the two sides of the bottom of the vertical connecting frame, and the other ends of the two bucket valves are hinged to the lifting connecting structure. The two bucket valves correspond to each other, the vertical connecting frame is connected with the lifting connecting structure, mounting grooves are formed in the opposite sides of the two bucket valves, and auxiliary fasteners are arranged in the two mounting grooves. After the two bucket petals are relatively closed, the abutting head can be pushed to be unfolded and tightly abut against the surface of a sunken ship body, so that the contact area and friction force between the bucket petals and the sunken ship are increased, and the grabbing stability of the sunken ship is improved. In addition, the distance between the two bucket valves can be reduced through the arrangement of the two abutting rods so as to adapt to ship bodies of different shapes and sizes.

Description

Technical Field

[0001] This utility model relates to the field of marine machinery technology, specifically a shipwreck salvage grab. Background Technology

[0002] Maritime accidents occur frequently, resulting in ships sinking to the seabed. For various reasons, it is necessary to salvage sunken ships and objects. Common methods for shipwreck salvage include: buoyancy salvage, floating dock salvage, dismantling salvage, underwater blasting, and grab salvage. Grab salvage requires a grab device.

[0003] A novel shipwreck salvage grab, disclosed in patent publication number CN218453895U, includes a top connector, a bottom grab assembly, and a lifting connection structure. The bottom grab assembly is installed below the top crossbeam assembly. Regardless of the number of bottom grab assemblies installed below the top crossbeam assembly, they can all be connected to a crane via a hook on the top connector. This means that only one crane is needed to simultaneously raise or lower all bottom grab assemblies, thereby achieving shipwreck salvage, reducing salvage costs, balancing the load on all bottom grab assemblies, and preventing damage to any one bottom grab assembly due to overload. All sliding pulleys are wound on the same connecting steel wire rope. The horizontal height of all sliding pulleys connected to the connecting steel wire rope can be adjusted by adjusting one side of the connecting steel wire rope, thereby adjusting the height of all bottom grab assemblies. The vertical connecting frame can be pulled upwards by shortening the length of the connecting steel wire rope, thereby pulling up the top of the grab and ultimately increasing the gripping force at the bottom of the grab.

[0004] However, the above-mentioned equipment still has the following problems in use: During the salvage process, the spacing of the grabs needs to be pre-adjusted according to the structure of the sunken ship (such as the cockpit), lacking dynamic adjustment capability, making it difficult to cope with sunken ships of different shapes or sizes. Furthermore, if the sunken ship structure is complex or the grab surface is irregular, it may lead to insufficient grabbing force or local stress concentration. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a shipwreck salvage grab bucket to solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shipwreck salvage grab, comprising a top connector, multiple bottom grab assemblies, and a lifting connection structure. The lifting connection structure is installed inside the top connector and is connected to all bottom grab assemblies via a hoisting rope. Each bottom grab assembly includes a vertical connecting frame and two symmetrically arranged grab petals on both sides of the vertical connecting frame. One end of each grab petal is hinged to the bottom sides of the vertical connecting frame, and the two grab petals correspond to each other. The vertical connecting frame is connected to the lifting connection structure. Each of the two grab petals has an installation groove on its opposite side, and each of the two installation grooves contains an auxiliary fastener. The auxiliary fastener includes an abutment rod, a drive assembly for driving the abutment rod to extend or retract, and a water spray assembly for cleaning the tip of the bottom of the grab petal. The top end of the abutment rod is hinged to the top of the installation groove. The drive assembly is installed inside the installation groove and fixedly connected to the abutment rod. The water spray assembly is installed below the drive assembly, and both ends of the water spray assembly are hinged to the back of the abutment rod and the side wall of the grab petal, respectively.

[0007] Furthermore, the bottom grab bucket assembly also includes two linear actuators symmetrically arranged on both sides of the vertical connecting frame. One end of the two linear actuators is hinged to the top two sides of the vertical connecting frame, and the other end of the two linear actuators is hinged to the corners of the two bucket segments respectively.

[0008] Furthermore, the abutment rod includes a hinge joint, a connecting rod, and an abutment head. The two ends of the hinge joint are fixed to the top of the mounting groove, the connecting rod is fixedly connected to the side wall of the hinge joint, and the abutment head is fixedly connected to the bottom of the connecting rod.

[0009] Furthermore, the drive assembly includes a bladder and a water pump. The water pump is disposed in the mounting groove. One side of the bladder is fixedly connected to one side of the connecting rod, and the other side of the bladder is fixed inside the mounting groove. The water pump is installed on the outer wall of the bucket petal, and the output end of the water pump extends through the bucket petal and into the inside of the bladder.

[0010] Furthermore, the water spray assembly includes a connector, two sets of hinged rods, and multiple nozzles. The connector is located below the bladder. One end of each of the two sets of hinged rods is hinged to the connector, and the other end of each set of hinged rods is hinged to the side wall of the connector and the side of the bucket located inside the mounting groove, respectively. The multiple nozzles are evenly arranged at the bottom of the connector, and the input end of each nozzle penetrates the bladder and extends into the interior of the bladder.

[0011] Furthermore, the contact head is a cylindrical protrusion, and an anti-slip layer is provided on the contact head.

[0012] Furthermore, the number of hinge rods in each group is set to two, and the two hinge rods in each group are symmetrically arranged at both ends of the connector.

[0013] Furthermore, the connection between the input end of all the nozzles and the bag is a sealed connection, and all the nozzles face the bottom tip of the bucket.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model, through the setting of auxiliary fasteners, can push the abutment head to unfold and tightly abut against the surface of the sunken ship after the two buckets are closed relative to each other, thereby increasing the contact area and friction between the buckets and the sunken ship, improving the stability of the sunken ship's grabbing. In addition, the setting of two abutment rods can reduce the gap between the two buckets to adapt to hulls of different shapes and sizes. At the same time, since the abutment head unfolds by pushing the abutment rod to rotate through the expansion of the bladder, the position and angle of the abutment head can be dynamically adjusted according to the shape of the sunken ship, further improving adaptability.

[0016] 2. The water spray component of this utility model can spray water to clean the tip of the bottom of the bucket, so as to prevent impurities from affecting the closing effect of the bucket, avoid the problem of poor bucket closure caused by impurities, improve the stability and reliability of the salvage operation, and reduce the picking up of garbage and impurities. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a shipwreck salvage grab according to this utility model;

[0018] Figure 2 This is a schematic diagram of the bottom grab bucket assembly of this utility model;

[0019] Figure 3 This is a cross-sectional view of the auxiliary fastener of this utility model;

[0020] Figure 4 This is a partial structural diagram of the auxiliary fastener of this utility model;

[0021] Figure 5 for Figure 4 A schematic diagram of the connection structure between the abutment rod and the hinge rod.

[0022] In the diagram: 1. Top connector; 2. Bottom grab bucket assembly; 3. Lifting connection structure; 4. Vertical connecting frame; 5. Bucket flaps; 6. Linear actuator; 7. Auxiliary fasteners; 8. Mounting slot;

[0023] 71. Abutment rod; 72. Drive assembly; 73. Spray assembly; 74. Hinge joint; 75. Connecting rod; 76. Abutment head; 77. Bag; 78. Water pump; 79. Connector; 80. Hinge rod; 81. Nozzle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figures 1 to 5 This utility model provides a shipwreck salvage grab, including a top connector 1, multiple bottom grab assemblies 2, and a lifting connection structure 3. The lifting connection structure 3 is installed inside the top connector 1 and is connected to all the bottom grab assemblies 2 via a hoisting rope. The bottom grab assemblies 2 include a vertical connecting frame 4 and two symmetrically arranged grab petals 5 on both sides of the vertical connecting frame 4. One end of each grab petal 5 is hinged to the bottom sides of the vertical connecting frame 4, and the two grab petals 5 correspond to each other. The vertical connecting frame 4 is connected to the lifting connection structure 3. The bottom grab assemblies 2 also include two symmetrically arranged linear actuators 6 on both sides of the vertical connecting frame 4. One end of each linear actuator 6 is hinged to the top sides of the vertical connecting frame 4, and the other end of each linear actuator 6 is hinged to the corner of each grab petal 5.

[0026] Furthermore, each of the two bilobes 5 has an installation groove 8 on one side opposite to the other, and each of the two installation grooves 8 is provided with an auxiliary fastener 7. The auxiliary fastener 7 includes an abutment rod 71, a drive assembly 72 for driving the abutment rod 71 to expand or retract, and a water spray assembly 73 for cleaning the tip of the bottom of the bilobe 5. The top of the abutment rod 71 is hinged to the top of the inside of the installation groove 8. The drive assembly 72 is installed inside the installation groove 8 and is fixedly connected to the abutment rod 71. The water spray assembly 73 is installed below the drive assembly 72, and both ends of the water spray assembly 73 are hinged to the back of the abutment rod 71 and the side wall of the bilobe 5, respectively.

[0027] The top connector 1, bottom grab bucket assembly 2, and lifting connection structure 3 in this utility model are similar in structure to those in a novel shipwreck salvage grab bucket provided in patent publication number CN218453895U. Both involve connecting the top connector 1 to a crane, activating the linear actuator 6 to open the two bucket segments 5 relative to each other, then activating the crane to lower multiple bottom grab bucket assemblies 2 until the multiple bucket segments 5 are at the width of the shipwreck, then activating the linear actuator 6 to close the two bucket segments 5 relative to each other, thus gripping the shipwreck, and finally activating the crane to pull up the bucket segments 5, thereby achieving the overall salvage of the shipwreck. However, during the salvage process, the spacing of the bucket segments 5 needs to be pre-adjusted according to the shipwreck structure, lacking dynamic adjustment capability, making it difficult to handle shipwrecks of different shapes or sizes. Furthermore, if the shipwreck structure is complex or the grab surface is irregular, it may lead to insufficient grabbing force or localized stress concentration.

[0028] Therefore, in order to solve the above problems, the present invention provides auxiliary fasteners 7 on the opposite side of each of the two lobes 5. When the two lobes 5 are closed relative to each other, if the volume of the sunken ship is small or the sunken ship is overturned, the gap between the two lobes 5 and the sunken ship held inside is large, which will lead to the unstable gripping of the sunken ship. At this time, by activating the drive mechanism, the drive component 72 includes a bag 77 and a water pump 78. The water pump 78 is set in the mounting groove 8. One side of the bag 77 is fixedly connected to one side of the connecting rod 75, and the other side of the bag 77 is fixed inside the mounting groove 8. The water pump 78 is installed on the outer wall of the lobes 5, and the output end of the water pump 78 extends into the bag 77 after passing through the lobes 5.

[0029] External water is pumped into the bag 77 by water pump 78, which increases the internal volume of the bag 77. When the internal volume of the bag 77 increases, it expands. The expansion of the bag 77 can push the abutment rod 71 to rotate along the hinge point, so that the bottom end of the abutment rod 71 unfolds towards the outside of the shipwreck. The abutment rod 71 includes a hinge joint 74, a connecting rod 75 and an abutment head 76. The two ends of the hinge joint 74 are fixed to the top of the inside of the mounting groove 8. The connecting rod 75 is fixedly connected to the side wall of the hinge joint 74. The abutment head 76 is fixedly connected to the bottom of the connecting rod 75 until the two abutment rods 71 ​​abut against the two sides of the shipwreck.

[0030] Once deployed, the contact head 76 can closely press against the surface of the sunken ship, thereby increasing the contact area and friction between the flapper 5 and the sunken ship, and improving the stability of the wreck grab. Furthermore, the two contact rods 71 ​​reduce the distance between the two flapper 5 to accommodate hulls of different shapes and sizes. Also, since the contact head 76 is deployed by the expansion of the bladder 77 pushing the contact rods 71 ​​to rotate, the position and angle of the contact head 76 can be dynamically adjusted according to the shape of the sunken ship, further enhancing adaptability.

[0031] In addition, the contact head 76 is a cylindrical protrusion, and an anti-slip layer is provided on the contact head 76.

[0032] The anti-slip layer increases the friction between the contact head 76 and the surface of the sunken ship, ensuring that it is not easy to slip during the lifting process. At the same time, the anti-slip layer can also play a certain role in cushioning. The contact head 76 can also distribute the gripping force, which helps to maintain the integrity of the sunken ship's surface and avoid damage to the sunken ship's structure during the gripping process due to local stress concentration.

[0033] When the two abutment rods 71 ​​rotate to abut the sunken ship, the water jet assembly 73 is activated. The water jet assembly 73 includes a connector 79, two sets of hinged rods 80 and multiple nozzles 81. The connector 79 is located below the bladder 77. One end of each of the two sets of hinged rods 80 is hinged to the connector 79, and the other end of each set of hinged rods 80 is hinged to the side wall of the connecting rod 75 and the side of the bucket 5 located inside the mounting groove 8, respectively. Multiple nozzles 81 are evenly arranged at the bottom of the connector 79, and the input end of the nozzle 81 penetrates the bladder 77 and extends into the interior of the bladder 77.

[0034] The number of hinge rods 80 in each group is set to two, and the two hinge rods 80 in each group are symmetrically arranged at both ends of the connector 79.

[0035] All nozzles 81 have a sealed connection at the input end to the bag 77, and all nozzles 81 face the bottom tip of the bucket 5.

[0036] When the bag 77 inflates, it pushes the connector 79 at its bottom downwards, thereby driving the two sets of hinge rods 80 hinged at both ends of the connector 79 to rotate and unfold. When the two sets of hinge rods 80 unfold, the nozzle 81 at the bottom of the connector 79 is exposed and sprays water to clean the tip of the bottom of the bucket petal 5, so as to prevent impurities from affecting the closing effect of the bucket petal 5, avoiding the problem of poor closure of the bucket petal 5 due to impurities, improving the stability and reliability of the salvage operation, and also reducing the picking up of garbage and impurities.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wrecking grab comprising a top connecting element (1), a plurality of bottom grab sets (2) and a lifting connecting structure (3), said lifting connecting structure (3) being installed inside the top connecting element (1) and said lifting connecting structure (3) being connected with all bottom grab sets (2) by means of a hoisting rope transmission, characterized in that: The bottom grab bucket group (2) comprises a vertical connecting frame (4) and two bucket petals (5) symmetrically arranged on both sides of the vertical connecting frame (4), one end of each of the two bucket petals (5) is hingedly connected to the bottom of the vertical connecting frame (4) on both sides, and the two bucket petals (5) correspond to each other, the vertical connecting frame (4) is connected with the lifting connecting structure (3), and the opposite sides of the two bucket petals (5) are each provided with a mounting groove (8), and an auxiliary fastener (7) is arranged in each of the two mounting grooves (8), the auxiliary fastener (7) comprises a resisting rod (71), a driving assembly (72) for driving the resisting rod (71) to expand or contract, and a water spraying assembly (73) for cleaning the tip of the bottom of the bucket petal (5), the top end of the resisting rod (71) is hingedly connected to the inside top end of the mounting groove (8), the driving assembly (72) is mounted in the mounting groove (8) and is fixedly connected with the resisting rod (71), and the water spraying assembly (73) is mounted below the driving assembly (72) and is hingedly connected to the back of the resisting rod (71) and the side wall of the bucket petal (5) at two ends.

2. A wrecking grab according to claim 1, characterised in that The bottom grab bucket group (2) further comprises two linear actuators (6) symmetrically arranged on both sides of the vertical connecting frame (4), one end of each of the two linear actuators (6) is hingedly connected to the top of the vertical connecting frame (4) on both sides, and the other end of each of the two linear actuators (6) is hingedly connected to the corner of each of the two bucket petals (5).

3. A wrecking grab according to claim 1, characterised in that, The resisting rod (71) comprises a hinge joint (74), a connecting rod (75) and a resisting head (76), the two ends of the hinge joint (74) are fixedly connected to the inside top end of the mounting groove (8), the connecting rod (75) is fixedly connected to the side wall of the hinge joint (74), and the resisting head (76) is fixedly connected to the bottom of the connecting rod (75).

4. A wrecking grab according to claim 3, wherein, The driving assembly (72) comprises a bag (77) and a water pump (78), the water pump (78) is arranged in the mounting groove (8), one side of the bag (77) is fixedly connected to one side of the connecting rod (75), the other side of the bag (77) is fixedly connected to the inside of the mounting groove (8), the water pump (78) is mounted on the outside wall of the bucket petal (5), and the output end of the water pump (78) extends to the inside of the bag (77) through the bucket petal (5).

5. A wrecking grab according to claim 3, wherein The water spraying assembly (73) comprises a connecting head (79), two groups of hinge rods (80) and a plurality of spray heads (81), the connecting head (79) is located below the bag (77), one end of each of the two groups of hinge rods (80) is hingedly connected to the connecting head (79), the other end of each of the two groups of hinge rods (80) is hingedly connected to the side wall of the connecting rod (75) and the side of the bucket petal (5) inside the mounting groove (8), respectively, and the plurality of spray heads (81) are uniformly arranged at the bottom of the connecting head (79), and the input end of the spray head (81) penetrates the bag (77) and extends to the inside of the bag (77).

6. A wrecking grab according to claim 3, wherein The resisting head (76) is a cylindrical protrusion, and an anti-skid layer is arranged on the resisting head (76).

7. A wrecking grab according to claim 5, wherein, The number of the articulated rods (80) in each group is two, and the two articulated rods (80) in each group are symmetrically arranged at the two ends of the connecting head (79).

8. A wrecking grab according to claim 5, wherein, The input end of each of the spray heads (81) is in sealed connection with the connecting part of the bag (77), and all the spray heads (81) are directed to the bottom tip of the bucket valve (5).

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