Grab bucket special for underwater accurate fishing

Abstract

The invention relates to the technical field of underwater salvage, and discloses a special underwater accurate salvage grab bucket which comprises a multi-stage air cylinder, the output end of the multi-stage air cylinder is fixedly connected with a mounting shell, a first motor is mounted on the inner side of the mounting shell, and the output end of the first motor penetrates through the mounting shell to be fixedly connected with a mounting plate; the lower end of the mounting plate is fixedly connected with a connecting shell, an opening mechanism is arranged on the outer side of the connecting shell, a grabbing and clamping mechanism is arranged at the lower end of the connecting shell, the opening mechanism comprises four supporting plates, one end of each supporting plate is fixedly connected with a rotating plate, and the four rotating plates can be combined into a drill bit. The grab bucket has the advantages that parts clamped in stone piles can be conveniently fished, meanwhile, the surfaces of the parts can be prevented from being scraped by stones in the fishing and moving-out process, and the grab bucket integrates crushing and fishing, so that the grab bucket is more efficient in fishing.

Description

Technical Field

[0001] The invention relates to the technical field of underwater salvage, in particular to a grab bucket specially used for underwater precision salvage. Background Art

[0002] An underwater salvage grab is a tool specially used for underwater salvage operations, usually used in conjunction with a crane ship. It takes the form of a mechanical arm and uses mechanical traction to grab and drag objects. When in use, it is necessary to determine the location of the target object and make appropriate preparations. Then the grab is placed above the target object to grab and lift it, and finally the object is fixed to the ship or shore. It is mainly used to salvage sunken ships, sunken objects, and parts that have fallen from the ship.

[0003] When salvaging ship parts that have fallen into seabed crevices or are stuck in seabed rock piles, it is difficult to remove the parts because they are stuck in the rock piles, and the stones will scratch and wear the parts during the grabbing and lifting process, causing significant damage to the surface of the parts. For this reason, we propose a special grab for underwater precision salvage. Summary of the invention

[0004] The present invention adopts the following technical scheme to solve the above-mentioned technical problems: a special grab for underwater precision salvage is provided, comprising a multi-stage cylinder, the output end of the multi-stage cylinder is fixedly connected to a mounting shell, a first motor is installed on the inner side of the mounting shell, the output end of the first motor is fixedly connected to a mounting plate through the mounting shell, the lower end of the mounting plate is fixedly connected to a connecting shell, an opening mechanism is arranged on the outer side of the connecting shell, a clamping mechanism is arranged on the lower end of the connecting shell, the opening mechanism comprises four groups of support plates, one end of the support plate is fixedly connected to a rotating plate, the four groups of rotating plates can be combined into a drill bit, a connecting rod assembly is commonly arranged between the support plate and the connecting shell, the connecting rod assembly comprises a fixed block one, a fixed block two, and a fixed block three, one end of each of the fixed block one, the fixed block two, and the fixed block three is commonly fixedly connected to the connecting shell.

[0005] Preferably, a groove is provided at the upper end of the support plate, and a connecting groove is provided on the inner side of the support plate, and the groove and the inner side of the connecting groove are rotatably connected to a second rotating rod, and a cone block is fixedly connected to the outer side of the second rotating rod, and the cone block is movably connected to the inner side of the groove, and a column gear is fixedly connected to the outer side of the second rotating rod, and the column gear is rotatably connected to the inner side of the connecting groove, and a first tooth plate is slidably connected to the inner side of the connecting groove, and the first tooth plate is meshed with the column gear.

[0006] Preferably, a slide groove 1 is provided at the lower end of the support plate, and the slide groove 1 is communicated with the inner side of the connecting groove, the front end of the fixed block 1 is rotatably connected to the first rotating block, the outer side of the first rotating block is fixedly connected to a pull rod, one end of the pull rod is fixedly connected to the second rotating block, the rear end of the second rotating block is rotatably connected to a slider, and the upper end of the slider passes through the slide groove 1 and is fixedly connected to the first tooth plate.

[0007] Preferably, the front end of the fixed block two is rotatably connected to the third rotating block, the outer side of the third rotating block is fixedly connected to an electric push rod one, the output end of the electric push rod one is fixedly connected to the connecting block one, the front end of the connecting block one is rotatably connected to the first support rod, the front end of the first support rod is rotatably connected to the connecting block two, the outer side of the connecting block two is fixedly connected to the second support rod, one end of the second support rod is fixedly connected to the connecting block three, and the inner side of the connecting block three is rotatably connected to the rotating rod one.

[0008] Preferably, the outer side of the rotating rod one is rotatably connected to a connecting block four, the connecting block four is located at the front end of the connecting block three, the outer side of the connecting block four is fixedly connected to a third support rod, one end of the third support rod is fixedly connected to a fourth rotating block, the rear end of the fourth rotating block is rotatably connected to a fixed block four, the upper end of the fixed block four is fixedly connected to the support plate, the outer side of the rotating rod one is rotatably connected to a connecting block five, the connecting block five is located at the front end of the connecting block four, the outer side of the connecting block five is fixedly connected to a fourth support rod, one end of the fourth support rod is fixedly connected to a fifth rotating block, and the front end of the fifth rotating block is rotatably connected to the fixed block three.

[0009] Preferably, one end of the first support rod is fixedly connected to a sixth rotating block, the rear end of the sixth rotating block is rotatably connected to a fixed block five, the upper end of the fixed block five is fixedly connected to the support plate, the other end of the first support rod is fixedly connected to a seventh rotating block, the rear end of the seventh rotating block is rotatably connected to a fixed block six, and one side of the fixed block six is ​​fixedly connected to the connecting shell.

[0010] Preferably, the gripping mechanism includes a second motor, which is mounted on the lower end of the mounting plate, the output end of the second motor is fixedly connected to a threaded rod, the outer side of the threaded rod is threadedly connected to a movable plate one, the lower end of the movable plate one is fixedly connected to two groups of movable plates two, the two groups of movable plates two are fixedly connected to slide plates on opposite sides, a slide groove two is provided on the inner side of the connecting shell, the slide plate is slidably connected to the inner side of the slide groove two, the lower ends of the two groups of movable plates two are commonly fixedly connected to a fixed plate one, and the lower end of the fixed plate one is fixedly connected to two groups of fixed plates two.

[0011] Preferably, the lower ends of the two groups of fixed plates II are commonly fixedly connected with a connecting plate, a cross groove is provided on the inner side of the connecting plate, an electric push rod II is installed on the lower end of the fixed plate I, the output end of the electric push rod II is fixedly connected with a moving rod, the outer side of the moving rod is fixedly connected with a second tooth plate, the second tooth plate is movably connected to the inner side of the cross groove, the lower end of the connecting plate is fixedly connected with a slot plate, the inner side of the slot plate is fixedly connected with a fixed rod I, the outer side of the fixed rod I is rotatably connected with a first rotating drum, the outer side of the first rotating drum is fixedly connected with a half gear, and the half gear is meshed with the second tooth plate.

[0012] Preferably, two groups of first connecting rods are fixedly connected to the outer side of the first rotating drum, a fixing rod two is commonly fixedly connected between the two groups of the first connecting rods, a fixing rod three is fixedly connected to the inner side of the groove plate, the outer side of the fixing rod three is rotatably connected to the second rotating drum, two groups of second connecting rods are fixedly connected to the outer side of the second rotating drum, a fixing rod four is commonly fixedly connected between the two groups of the second connecting rods, a third connecting rod is rotatably connected to the outer side of the fixing rod four and the fixing rod two, one end of the third connecting rod is fixedly connected to a grab rod, and a rubber pad is provided at one end of the grab rod.

[0013] Compared with the prior art, the present invention provides a special grab bucket for underwater precision salvage, which has the following beneficial effects: 1. When the underwater precision salvage special grab is used to salvage ship parts stuck in the rock pile on the seabed, the multi-stage cylinder is started to move the opening mechanism and the clamping mechanism down to the rock pile area where the parts are stuck, and then the electric push rod 1 is started. The output end of the electric push rod 1 pushes the first support rod to deflect, and then the support plate begins to move. At the same time, through the connection of the third support rod, the fourth support rod also begins to deflect, and under the support of the fourth support rod, the support plate and the rotating plate are unfolded. During the unfolding process, the stones around the required salvaged parts can be spread open, and then the parts can be salvaged out through the clamping mechanism, which is convenient for salvaging the parts stuck in the rock pile, and can avoid scratches on the surface of the parts by the stones during the salvage and removal process, thereby avoiding damage to the parts.

[0014] 2. The underwater precision salvage special grab, when salvaging ship parts that have fallen into the cracks in the seabed, because the cracks are relatively narrow, when the grab enters the cracks to salvage the parts and then moves upward, the opening mechanism and the clamping mechanism are both in an expanded state by grabbing the parts. After grabbing the parts, they cannot move up through the cracks. At this time, the support plate is in a semi-expanded state, and the cone block will also be deflected from the inner side of the groove through the meshing of the first tooth plate and the column gear, and the cone block is deflected upward and has a certain angle with the support plate. Then, the multi-stage cylinder is started to start the first motor during the process of moving the grab upward for recovery, and the opening mechanism is rotated through the connection between the mounting plate and the connecting shell, thereby rotating multiple groups of cone blocks and crushing the cracks, so that the grab can salvage the ship parts that have fallen into the cracks. The grab integrates crushing and salvage, making the grab salvage more efficient.

[0015] 3. When salvaging a sunken ship, the special grab for underwater precision salvage can penetrate the deck through the drill composed of four sets of rotating plates, so that the grab can be moved to the bottom of the salvaged ship. At this time, it is only necessary to start the electric push rod to output one to deflect the first support rod. Under the action of the connecting rod assembly, the support plate is fully expanded from a vertical state to a horizontal state under the sunken ship. At the same time, through the engagement of the first tooth plate and the column gear, the cone block is moved out from the inner side of the groove, so that the cone block is perpendicular to the support plate. Subsequently, during the recovery process of the multi-stage cylinder, the support plate and the cone block are moved up at the same time, and the cone block will penetrate into the lower end of the sunken ship to be salvaged for fixation. Subsequently, under the support of the support plate, the sunken ship is salvaged more stably. The grab is multifunctional and suitable for the salvage of various objects and scenes, which improves the utilization rate of the grab. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The opening mechanism of the present invention is shown in FIG. Figure 1 ; Figure 3 The opening mechanism of the present invention is cut away Figure 1 ; Figure 4 The opening mechanism of the present invention is cut away Figure 2 ; Figure 5 The opening mechanism of the present invention is shown in FIG. Figure 2 ; Figure 6 The opening mechanism of the present invention is shown in FIG. Figure 3 ; Figure 7 Schematic diagram of the clamping mechanism of the present invention Figure 1 ; Figure 8 Schematic diagram of the clamping mechanism of the present invention Figure 2 ; Fig. 9 An exploded view of the connecting plate structure of the present invention; Fig.10 An exploded view of the grab bar structure of the present invention; Fig.11 The opening mechanism of the present invention is shown in FIG. Figure 4 ; Fig.12 The opening mechanism of the present invention is shown in FIG. Figure 5 .

[0017] In the figure: 1, multi-stage cylinder; 2, mounting shell; 3, first motor; 4, mounting plate; 5, connecting shell; 6, opening mechanism; 61, support plate; 62, rotating plate; 63, connecting rod assembly; 631, fixed block 1; 632, fixed block 2; 633, fixed block 3; 634, first rotating block; 635, pull rod; 636, second rotating block; 637, slider; 638, third rotating block; 639, electric push rod 1; 6310, connecting rod Connecting block 1; 6311, first support rod; 6312, connecting block 2; 6313, second support rod; 6314, connecting block 3; 6315, rotating rod 1; 6316, connecting block 4; 6317, third support rod; 6318, fourth rotating block; 6319, fixed block 4; 6320, connecting block 5; 6321, fourth support rod; 6322, fifth rotating block; 6323, sixth rotating block; 6324, fixed block 5 ; 6325, seventh rotating block; 6326, fixed block six; 64, groove; 65, connecting groove; 66, rotating rod two; 67, cone block; 68, column gear; 69, first tooth plate; 610, slide groove one; 7, clamping mechanism; 71, second motor; 72, moving plate one; 73, moving plate two; 74, slide plate; 75, slide groove two; 76, threaded rod; 77, fixed plate one; 78, fixed plate two; 79, connecting plate; 71 0. Cross slot; 711. Electric push rod 2; 712. Moving rod; 713. Second tooth plate; 714. Slot plate; 715. Fixed rod 1; 716. First rotating drum; 717. Half gear; 718. First connecting rod; 719. Fixed rod 2; 720. Fixed rod 3; 721. Second rotating drum; 722. Second connecting rod; 723. Fixed rod 4; 724. Third connecting rod; 725. Grab rod; 726. Rubber pad. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1 - Fig.12A special grab for underwater precision salvage, including a multi-stage cylinder 1, the output end of the multi-stage cylinder 1 is fixedly connected with a mounting shell 2, the inner side of the mounting shell 2 is installed with a first motor 3, the output end of the first motor 3 passes through the mounting shell 2 and is fixedly connected with a mounting plate 4, the lower end of the mounting plate 4 is fixedly connected with a connecting shell 5, an opening mechanism 6 is arranged on the outer side of the connecting shell 5, and a gripping mechanism 7 is arranged at the lower end of the connecting shell 5, the opening mechanism 6 includes four groups of support plates 61, one end of the support plate 61 is fixedly connected with a rotating plate 62, and the four groups of rotating plates 62 can be combined into a drill bit, a connecting rod assembly 63 is commonly arranged between the support plate 61 and the connecting shell 5, and the connecting rod assembly 63 includes a fixing block 1 631, a fixing block 2 632, and a fixing block 3 633, and one end of the fixing block 1 631, the fixing block 2 632, and the fixing block 3 633 is commonly fixedly connected to the connecting shell 5.

[0020] In this embodiment, a groove 64 is provided at the upper end of the support plate 61, and a connecting groove 65 is provided on the inner side of the support plate 61. The groove 64 and the inner side of the connecting groove 65 are rotatably connected to a second rotating rod 66. A cone block 67 is fixedly connected to the outer side of the second rotating rod 66. The cone block 67 is movably connected to the inner side of the groove 64. A column gear 68 is fixedly connected to the outer side of the second rotating rod 66. The column gear 68 is rotatably connected to the inner side of the connecting groove 65. The inner side of the connecting groove 65 is slidably connected to a first toothed plate 69. The first toothed plate 69 is slidably connected to the inner side of the connecting groove 65. 9 is meshed with the column gear 68, a slide groove 610 is provided at the lower end of the support plate 61, and the slide groove 610 is communicated with the inner side of the connecting groove 65, the front end of the fixed block 631 is rotatably connected to the first rotating block 634, the outer side of the first rotating block 634 is fixedly connected to the pull rod 635, one end of the pull rod 635 is fixedly connected to the second rotating block 636, the rear end of the second rotating block 636 is rotatably connected to the slider 637, and the upper end of the slider 637 passes through the slide groove 610 and is fixedly connected to the first tooth plate 69.

[0021] Specifically, during the process of the support plate 61 expanding and moving, since the support plate 61 is deflected outward and the length of the pull rod 635 remains unchanged, during the process of the support plate 61 expanding outward, the pull rod 635 is connected through the slider 637, and the first tooth plate 69 will slide on the inner side of the connecting groove 65, thereby engaging the column gear 68 to rotate it, and through the connection of the rotating rod 66, the cone block 67 can be moved out from the inner side of the groove 64, and the rock cracks can be broken by the cone block 67. When the sunken ship is salvaged, the lower end of the sunken ship can also be fixed by the cone block 67.

[0022] In this embodiment, the front end of the fixed block 2 632 is rotatably connected to the third rotating block 638, the outer side of the third rotating block 638 is fixedly connected to the electric push rod 1 639, the output end of the electric push rod 1 639 is fixedly connected to the connecting block 1 6310, the front end of the connecting block 1 6310 is rotatably connected to the first support rod 6311, the front end of the first support rod 6311 is rotatably connected to the connecting block 2 6312, the outer side of the connecting block 2 6312 is fixedly connected to the second support rod 6313, one end of the second support rod 6313 is fixedly connected to the connecting block 3 6314, the inner side of the connecting block 3 6314 is rotatably connected to the rotating rod 1 6315, the outer side of the rotating rod 1 6315 is rotatably connected to the connecting block 4 6316, and the connecting block 4 63 16 is located at the front end of the connecting block three 6314, the outer side of the connecting block four 6316 is fixedly connected with the third support rod 6317, one end of the third support rod 6317 is fixedly connected with the fourth rotating block 6318, the rear end of the fourth rotating block 6318 is rotatably connected with the fixed block four 6319, the upper end of the fixed block four 6319 is fixedly connected to the support plate 61, the outer side of the rotating rod one 6315 is rotatably connected with the connecting block five 6320, the connecting block five 6320 is located at the front end of the connecting block four 6316, the outer side of the connecting block five 6320 is fixedly connected with the fourth support rod 6321, one end of the fourth support rod 6321 is fixedly connected with the fifth rotating block 6322, and the front end of the fifth rotating block 6322 is rotatably connected with the fixed block three 633.

[0023] Specifically, the electric push rod 639 is started, and the output end of the electric push rod 639 begins to output. Under the connection between the connecting block 1 6310 and the seventh rotating block 6325, the first support rod 6311 begins to deflect, and under the connection between the sixth rotating block 6323 and the fixed block 5 6324, it starts to move with the support plate 61. Moreover, when the support plate 61 starts to move under the force, under the connection between the fourth rotating block 6318 and the fixed block 4 6319, the third support rod 6317 will be driven to move. Then, the third support rod 6317 will simultaneously pull the second support rod 6313 and the fourth support rod 6321 to deflect through the connection between the connecting block 4 6316 and the rotating rod 1 6315, and under the support of the fourth support rod 6321, the support plate 61 is gradually expanded. During the expansion of the support plate 61, the rotating plate 62 simultaneously spreads out the surrounding stones, so as to facilitate the salvage of the parts stuck in the stone pile.

[0024] In this embodiment, one end of the first support rod 6311 is fixedly connected to the sixth rotating block 6323, the rear end of the sixth rotating block 6323 is rotatably connected to the fixed block five 6324, the upper end of the fixed block five 6324 is fixedly connected to the support plate 61, the other end of the first support rod 6311 is fixedly connected to the seventh rotating block 6325, the rear end of the seventh rotating block 6325 is rotatably connected to the fixed block six 6326, and one side of the fixed block six 6326 is fixedly connected to the connecting shell 5.

[0025] Specifically, the output of the electric push rod 639 is started to deflect the first support rod 6311, and under the action of the connecting rod assembly 63, the support plate 61 is fully expanded from a vertical state to a horizontal state under the sunken ship. At the same time, through the engagement of the first gear plate 69 and the column gear 68, the cone block 67 is moved out from the inner side of the groove 64, so that the cone block 67 is perpendicular to the support plate 61, and then during the recovery process of the multi-stage cylinder 1, the support plate 61 and the cone block 67 are moved up at the same time, and the cone block 67 will penetrate into the lower end of the sunken ship to be salvaged, and then under the support of the support plate 61, the sunken ship is salvaged and more stable.

[0026] In this embodiment, the clamping mechanism 7 includes a second motor 71, which is installed at the lower end of the mounting plate 4. The output end of the second motor 71 is fixedly connected with a threaded rod 76, and the outer side of the threaded rod 76 is threadedly connected with a movable plate 1 72. The lower end of the movable plate 1 72 is fixedly connected with two groups of movable plates 2 73, and the opposite sides of the two groups of movable plates 2 73 are fixedly connected with a slide plate 74. A slide groove 2 75 is provided on the inner side of the connecting shell 5, and the slide plate 74 is slidably connected to the inner side of the slide groove 2 75. The lower ends of the two groups of movable plates 2 73 are commonly fixedly connected with a fixed plate 1 77, and the lower end of the fixed plate 1 77 is fixedly connected with two groups of fixed plates 2 78.

[0027] Specifically, when salvaging ship parts that have fallen into the cracks in the rocks on the seabed, the grab bucket enters the cracks to salvage the parts and then moves them upward. At this time, the opening mechanism 6 and the clamping mechanism 7 are both in an expanded state by grabbing the parts. After grabbing the parts, they can no longer move up through the cracks. At this time, the cone block 67 is deflected upward and has a certain angle with the support plate 61. Then, the multi-stage cylinder 1 is started to start the first motor 3 during the process of moving the grab bucket upward for recovery. The opening mechanism 6 is rotated through the connection between the mounting plate 4 and the connecting shell 5, thereby causing the multiple groups of cone blocks 67 to rotate and break the cracks, so that the grab bucket can salvage the ship parts that have fallen into the cracks.

[0028] In this embodiment, the lower ends of the two groups of fixed plates 78 are commonly fixedly connected with a connecting plate 79, and a cross groove 710 is opened on the inner side of the connecting plate 79. An electric push rod 711 is installed at the lower end of the fixed plate 77. The output end of the electric push rod 711 is fixedly connected with a moving rod 712, and the outer side of the moving rod 712 is fixedly connected with a second tooth plate 713. The second tooth plate 713 is movably connected to the inner side of the cross groove 710. The lower end of the connecting plate 79 is fixedly connected with a slot plate 714, and the inner side of the slot plate 714 is fixedly connected with a fixed rod 715. The outer side of the fixed rod 715 is rotatably connected with a first rotating drum 716, and the outer side of the first rotating drum 716 is fixedly connected with a half gear 717. The half gear 717 and the second tooth plate 713 are meshed with each other, two groups of first connecting rods 718 are fixedly connected to the outer side of the first rotating cylinder 716, and a fixing rod 2 719 is fixedly connected between the two groups of first connecting rods 718, a fixing rod 3 720 is fixedly connected to the inner side of the slot plate 714, and the outer side of the fixing rod 3 720 is rotatably connected to the second rotating cylinder 721, two groups of second connecting rods 722 are fixedly connected to the outer side of the second rotating cylinder 721, and a fixing rod 4 723 is fixedly connected between the two groups of second connecting rods 722, and a third connecting rod 724 is rotatably connected to the fixed rod 4 723 and the outer side of the fixing rod 2 719, one end of the third connecting rod 724 is fixedly connected to a grab rod 725, and a rubber pad 726 is provided at one end of the grab rod 725.

[0029] Specifically, the electric push rod 2 711 is started, and the output end of the electric push rod 2 711 pushes the second tooth plate 713 to move downward. During the downward movement of the second tooth plate 713, it will mesh with the half gear 717, thereby causing the first rotating drum 716 to rotate and drive the first connecting rod 718 to deflect upward. At the same time, under the connection of the fixed rod 2 719, the third connecting rod 724 will be driven to move, thereby separating the multiple groups of grabbing rods 725 from each other, and then the second motor 71 is started, and the second motor 71 causes the threaded rod 76 to rotate, and then the movable plate 1 72 and the movable plate 2 73 can be moved downward through the screw principle, thereby moving the grabbing rod 725 to the outside of the parts to be salvaged, and then the electric push rod 2 711 only needs to be started again to recover, so that the second tooth plate 713 moves upward, and then the half gear 717 rotates back, thereby prompting the multiple groups of grabbing rods 725 to move back and clamp the parts to be salvaged.

[0030] When in use, the opening mechanism 6 on the grab is adjusted to the merged state, and the grab is placed above the ship parts that need to be grabbed, and then the multi-stage cylinder 1 is started, and the output end of the multi-stage cylinder 1 pushes the mounting shell 2, the opening mechanism 6, and the clamping mechanism 7 to move down into the water at the same time, and move down to the rock pile area where the parts are stuck. At this time, the rotating plate 62 and the parts to be salvaged are in the rock pile at the same time, and then the electric push rod 1 639 is started, and the output end of the electric push rod 1 639 starts to output, and under the connection between the connecting block 1 6310 and the seventh rotating block 6325, the first support rod 6311 begins to deflect, and under the connection between the sixth rotating block 6323 and the fixed block 5 6324, it starts to move with the support plate 61, and at the same time when the support plate 61 starts to move under force, Under the connection between the fourth rotating block 6318 and the fixed block four 6319, the third support rod 6317 will be driven to move, and then the third support rod 6317 will simultaneously pull the second support rod 6313 and the fourth support rod 6321 to deflect through the connection block four 6316 and the rotating rod one 6315, and under the support of the fourth support rod 6321, the support plate 61 will gradually unfold, and during the unfolding process of the support plate 61, the surrounding stones will be spread apart together with the rotating plate 62, and then the electric push rod 2 711 will be started, and the output end of the electric push rod 2 711 will push the second tooth plate 713 downward, and during the downward movement of the second tooth plate 713, it will mesh with the half gear 717, thereby causing the first rotating drum 716 to rotate, and driving the first connecting rod 718 to deflect upward, and at the same time, the fixed rod When the second motor 719 is connected, the third connecting rod 724 will be driven to move, thereby separating the multiple grab bars 725 from each other, and then the second motor 71 is started. The second motor 71 causes the threaded rod 76 to rotate, and then the movable plate 1 72 and the movable plate 2 73 can move downward through the screw principle, thereby moving the grab bars 725 to the outside of the parts to be salvaged, and then it is only necessary to start the electric push rod 2 711 again to recover, so that the second tooth plate 713 moves up, and then the half gear 717 rotates back, thereby prompting the multiple grab bars 725 to move back and clamp the parts to be salvaged, and then start the multi-stage cylinder 1 to recover and move the grabbed parts out of the water. However, when salvaging a sunken ship, the opening mechanism 6 on the grab bucket is also adjusted to the merged state. Then, the grab is placed above the deck of the sunken ship, and the multi-stage cylinder 1 is output and the first motor 3 is started at the same time, so that the mounting plate 4 can drive the opening mechanism 6 to rotate, and the deck is penetrated by the drill composed of four sets of rotating plates 62, so that the grab moves to the bottom of the salvaged ship. At this time, it is only necessary to start the output of the electric push rod 639 to deflect the first support rod 6311, and then the operation steps are the same as above, with the output of the electric push rod 639, until the support plate 61 is expanded from a vertical state to a horizontal state under the sunken ship. At the same time, in the process of the expansion and movement of the support plate 61, since the support plate 61 is deflected outward, and the length of the pull rod 635 is unchanged, the first tooth plate 69 will slide on the inner side of the connecting groove 65 in the process of the support plate 61 expanding outward.The column gear 68 is meshed to rotate, and the cone block 67 is moved out from the inner side of the groove 64 through the connection of the second rotating rod 66, so that the cone block 67 is perpendicular to the support plate 61. Then, during the recovery process of the multi-stage cylinder 1, the support plate 61 and the cone block 67 move up at the same time, and the cone block 67 will penetrate into the lower end of the sunken ship to be salvaged. Then, under the support of the support plate 61, the sunken ship is salvaged.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grab bucket for underwater precision salvage, comprising a multi-stage cylinder (1), characterized in that: The output end of the multi-stage cylinder (1) is fixedly connected to a mounting shell (2), a first motor (3) is mounted on the inner side of the mounting shell (2), the output end of the first motor (3) passes through the mounting shell (2) and is fixedly connected to a mounting plate (4), the lower end of the mounting plate (4) is fixedly connected to a connecting shell (5), an opening mechanism (6) is arranged on the outer side of the connecting shell (5), a clamping mechanism (7) is arranged at the lower end of the connecting shell (5), and the opening mechanism (6) comprises four sets of support plates (6) 1), one end of the support plate (61) is fixedly connected to a rotating plate (62), four groups of the rotating plates (62) can be combined into a drill bit, a connecting rod assembly (63) is commonly provided between the support plate (61) and the connecting shell (5), the connecting rod assembly (63) comprises a fixing block 1 (631), a fixing block 2 (632), and a fixing block 3 (633), and one end of the fixing block 1 (631), the fixing block 2 (632), and the fixing block 3 (633) are commonly fixedly connected to the connecting shell (5).

2. The underwater precision salvage grab according to claim 1, characterized in that: A groove (64) is formed at the upper end of the support plate (61), and a connecting groove (65) is formed on the inner side of the support plate (61). The groove (64) and the inner side of the connecting groove (65) are rotatably connected to a second rotating rod (66). A cone block (67) is fixedly connected to the outer side of the second rotating rod (66). The cone block (67) is movably connected to the inner side of the groove (64). A column gear (68) is fixedly connected to the outer side of the second rotating rod (66). The column gear (68) is rotatably connected to the inner side of the connecting groove (65). A first tooth plate (69) is slidably connected to the inner side of the connecting groove (65). The first tooth plate (69) is meshed with the column gear (68).

3. The underwater precision salvage grab according to claim 2, characterized in that: A slide groove (610) is provided at the lower end of the support plate (61), and the slide groove (610) is communicated with the inner side of the connecting groove (65); the front end of the fixed block (631) is rotatably connected to the first rotating block (634); the outer side of the first rotating block (634) is fixedly connected to a pull rod (635); one end of the pull rod (635) is fixedly connected to the second rotating block (636); the rear end of the second rotating block (636) is rotatably connected to a slider (637); the upper end of the slider (637) passes through the slide groove (610) and is fixedly connected to the first tooth plate (69).

4. The underwater precision salvage grab according to claim 3, characterized in that: The front end of the fixed block 2 (632) is rotatably connected to the third rotating block (638), the outer side of the third rotating block (638) is fixedly connected to the electric push rod 1 (639), the output end of the electric push rod 1 (639) is fixedly connected to the connecting block 1 (6310), the front end of the connecting block 1 (6310) is rotatably connected to the first support rod (6311), the front end of the first support rod (6311) is rotatably connected to the connecting block 2 (6312), the outer side of the connecting block 2 (6312) is fixedly connected to the second support rod (6313), one end of the second support rod (6313) is fixedly connected to the connecting block 3 (6314), and the inner side of the connecting block 3 (6314) is rotatably connected to the rotating rod 1 (6315).

5. The underwater precision salvage grab according to claim 4, characterized in that: The outer side of the rotating rod 1 (6315) is rotatably connected to a connecting block 4 (6316), the connecting block 4 (6316) is located at the front end of the connecting block 3 (6314), the outer side of the connecting block 4 (6316) is fixedly connected to a third support rod (6317), one end of the third support rod (6317) is fixedly connected to a fourth rotating block (6318), the rear end of the fourth rotating block (6318) is rotatably connected to a fixed block 4 (6319), the fixed block 4 (6319) The upper end is fixedly connected to the support plate (61), the outer side of the rotating rod one (6315) is rotatably connected to the connecting block five (6320), the connecting block five (6320) is located at the front end of the connecting block four (6316), the outer side of the connecting block five (6320) is fixedly connected to the fourth support rod (6321), one end of the fourth support rod (6321) is fixedly connected to the fifth rotating block (6322), and the front end of the fifth rotating block (6322) is rotatably connected to the fixed block three (633).

6. The underwater precision salvage grab according to claim 4, characterized in that: One end of the first support rod (6311) is fixedly connected to a sixth rotating block (6323), a rear end of the sixth rotating block (6323) is rotatably connected to a fixed block five (6324), an upper end of the fixed block five (6324) is fixedly connected to the support plate (61), the other end of the first support rod (6311) is fixedly connected to a seventh rotating block (6325), a rear end of the seventh rotating block (6325) is rotatably connected to a fixed block six (6326), and one side of the fixed block six (6326) is fixedly connected to the connecting shell (5).

7. The underwater precision salvage grab according to claim 1, characterized in that: The gripping mechanism (7) comprises a second motor (71), the second motor (71) being mounted at the lower end of the mounting plate (4), the output end of the second motor (71) being fixedly connected to a threaded rod (76), the outer side of the threaded rod (76) being threadedly connected to a movable plate 1 (72), the lower end of the movable plate 1 (72) being fixedly connected to two groups of movable plates 2 (73), the two groups of movable plates 2 (73) being fixedly connected to a slide plate (74) on opposite sides thereof, the inner side of the connecting shell (5) being provided with a slide groove 2 (75), the slide plate (74) being slidably connected to the inner side of the slide groove 2 (75), the lower ends of the two groups of movable plates 2 (73) being fixedly connected to a fixed plate 1 (77), the lower end of the fixed plate 1 (77) being fixedly connected to two groups of fixed plates 2 (78).

8. The underwater precision salvage grab according to claim 7, characterized in that: The lower ends of the two groups of fixed plates (78) are commonly fixedly connected to a connecting plate (79), the inner side of the connecting plate (79) is provided with a cross groove (710), the lower end of the fixed plate (77) is provided with an electric push rod (711), the output end of the electric push rod (711) is fixedly connected to a moving rod (712), the outer side of the moving rod (712) is fixedly connected to a second tooth plate (713), the second tooth plate (713) is movably connected to the inner side of the cross groove (710), the lower end of the connecting plate (79) is fixedly connected to a slot plate (714), the inner side of the slot plate (714) is fixedly connected to a fixed rod (715), the outer side of the fixed rod (715) is rotatably connected to a first rotating drum (716), the outer side of the first rotating drum (716) is fixedly connected to a half gear (717), and the half gear (717) is meshed with the second gear plate (713).

9. The underwater precision salvage grab according to claim 8, characterized in that: Two groups of first connecting rods (718) are fixedly connected to the outer side of the first rotating cylinder (716), and a second fixing rod (719) is fixedly connected between the two groups of the first connecting rods (718). A third fixing rod (720) is fixedly connected to the inner side of the slot plate (714), and the outer side of the third fixing rod (720) is rotatably connected to the second rotating cylinder (721). Two groups of second connecting rods (722) are fixedly connected to the outer side of the second rotating cylinder (721), and a fourth fixing rod (723) is fixedly connected between the two groups of the second connecting rods (722). The fourth fixing rod (723) and the outer side of the second fixing rod (719) are rotatably connected to a third connecting rod (724), and one end of the third connecting rod (724) is fixedly connected to a grabbing rod (725), and one end of the grabbing rod (725) is provided with a rubber pad (726).

Images