Safety hoisting tool for ship

Abstract

The invention relates to the technical field of hoisting, in particular to a marine safety type hoisting tool. Comprising a connecting sleeve, the upper end of a lifting hook is elastically and slidably arranged in the connecting sleeve, one side of the lifting hook below the connecting sleeve is rotatably connected with a first gear, one side of the first gear is provided with a first rack, the first rack is meshed with the first gear, the first rack is fixed to the connecting sleeve, and a first connecting rod is fixed to the first gear; a vertical sliding rod is slidably arranged on the other side of the lifting hook in the vertical direction, a bottom plate is fixed to the lower end of the sliding rod, a second rack parallel to the sliding rod is fixed to the sliding rod, a second gear is rotationally connected to the lifting hook on one side of the second rack, the second rack is meshed with the second gear, and a second connecting rod is fixed to the second gear. When the lifting rope is located in the lifting hook and lifts, the lifting hook descends under the gravity action of an object, the first connecting rod rotates and prevents the lifting rope in the lifting hook from being separated from the lifting hook, and the situation that unhooking occurs due to the fact that the shaking amplitude of the object is too large can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting, and in particular to a safe hoisting tool for ships. Background Art

[0002] The lifting hook is the most common lifting tool in lifting machinery. In the field of marine lifting tools, due to the influence of the working environment, the objects being lifted are prone to swing greatly during the lifting process, so the anti-unhooking function of the marine lifting tools needs to be strengthened during operation. At the same time, it is necessary to improve its convenience of use, such as having an automatic unhooking function. When the object is lifted to the designated location, the marine lifting tools with automatic unhooking do not need manual unhooking, which can greatly improve the convenience of use. However, some existing marine lifting tools use conventional anti-unhooking structures, which require manual unhooking and do not have an automatic unhooking function, making them inconvenient to use.

[0003] Some existing hooks are generally provided with an anti-hook plate at the opening of the hook, one end of the anti-hook plate is rotatably connected to the hook through a rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is tightly against the anti-hook plate, the other end of the torsion spring is tightly against the hook, and the other end of the anti-hook plate is tightly against the inner side of the hook end of the hook. When the rope is hung on the hook, the rope can move into the hook, and the rope can push the anti-hook plate to rotate. When the rope passes over the anti-hook plate and enters the hook, the anti-hook plate is restored, and the rope is stabilized in the hook at this time. Under the blocking effect of the anti-hook plate, the rope cannot be withdrawn from the hook, so it can achieve the purpose of anti-hook. However, this structure needs to be manually unhooked. When unhooking, the anti-hook plate needs to be rotated into the hook, and then the rope is pulled out of the hook. Automatic unhooking is not possible.

[0004] The patent document with the authorization announcement number CN116199102B discloses a hook structure of a crane, comprising: a hook body, which can be used to hoist a suspended object, the hook body is provided with a notch, and the hook body can pass through the hoisting part of the suspended object through the notch; a locking mechanism, which is connected to the hook body, and the locking mechanism can lock the hoisting part of the suspended object, and the locking mechanism comprises a movable part, a first locking part and a second locking part, the first locking part and the second locking part have a first state and a second state, when the first locking part and the second locking part are in the first state, the tops of the first locking part and the second locking part are open, the bottoms of the first locking part and the second locking part are upwardly tilted, and the suspended object is locked from the first locking part. After the fixed part and the second locking part enter the opening at the top, the movable part is pushed downward by gravity, and the movable part pushes the bottom of the first locking part and the second locking part, so that the first locking part and the second locking part rotate, and the top of the first locking part and the second locking part are closed to form a second state of locking the suspended object. The locking mechanism also includes a reset component connected to the movable part, and the reset component can drive the movable part to reset when the movable part is not subject to force, so as to release the locking of the first locking part and the second locking part on the hanging part of the suspended object. The reset component includes a guide member, which passes through the bottom of the hook body and is connected to a connecting arm. The connecting arm is connected to the hook body with a first elastic part, and the first elastic part can reset the movable part The locking mechanism further comprises two mounting seats connected to the inner bottom side of the hook body, the first locking portion and the second locking portion being rotatably connected to the two mounting seats respectively, and a torsion spring is connected between the first locking portion and the second locking portion and the two mounting seats, the torsion spring being used to drive the first locking portion and the second locking portion to change from the second state to the first state when the first locking portion and the second locking portion are not subject to force; a sealing mechanism is connected between the locking mechanism and the hook body, the sealing mechanism can perform secondary locking on the hanging part of the hanging object, the sealing mechanism comprises a sealing portion, the sealing portion can be flipped and the notch can be sealed, the sealing mechanism further comprises a supporting seat connected to the notch, the supporting seat is rotatably connected to the first rotating portion The cam is connected to the first rotating shaft, and the sealing part can be flipped around the first rotating shaft as the axis. A driving assembly is connected between the first rotating shaft and the movable part. The movable part can drive the driving assembly to operate so that the first rotating shaft rotates, thereby providing power for the flipping of the sealing part. The driving assembly includes a first collecting and releasing disk rotatably connected to the first rotating shaft, a second rotating shaft rotatably connected to the hook body, and a toothed plate connected to the movable part. The second rotating shaft is rotatably connected to the second collecting and releasing disk, a connecting rope is arranged between the second collecting and releasing disk and the first collecting and releasing disk, and the second rotating shaft is also connected to a gear, the toothed plate is meshed with the gear, and the toothed plate can drive the gear to rotate, so that the driving assembly operates.Before hoisting the suspended object, the movable part is in an initial state, and the first locking part and the second locking part are in a first state. At this time, the hook body is passed through the hoisting position of the suspended object through the notch, and the crane is started to hoist the suspended object upward through the hook body. At this time, the movable part contacts the hoisting position of the suspended object, and the distance between the movable part and the inner bottom side of the hook body gradually decreases. At the same time, the movable part pushes the ends of the first locking part and the second locking part that are close to each other to flip downward at the same time, so that the ends of the first locking part and the second locking part that are away from each other are tilted, forming a second state of limiting the hoisting position of the suspended object. When the movable part is close to the inner bottom side of the hook body, the length of the guide member extending out of the bottom of the hook body becomes longer, driving The connecting arm is away from the hook body and stretches the first elastic part. At the same time, the movable part drives the tooth plate to mesh with the gear, so that the second retractable disk reels the connecting rope, and the first retractable disk releases the connecting rope, thereby driving the first rotating shaft to rotate, so that the sealing part flips over and closes the gap of the hook body. When the suspended object is put down, the bottom of the suspended object contacts the top of the support. At this time, the hook body continues to move downward, and the suspended object no longer applies force to the movable part. The movable part is reset under the drive of the reset component, and the first locking part and the second locking part are transformed into the first state. At the same time, the movable part drives the driving component to operate, so that the sealing part is reset and the gap is opened, so that the hook body can be removed. The hook structure requires the opening of an inner cavity and a first retractable disk and a second retractable disk on the hook body. The processing cost of the hook body is high, and the load-bearing capacity of the hook body is low. Summary of the invention

[0005] The main purpose of the present invention is to provide a marine safety lifting tool which has anti-unhooking function and automatic unhooking function and is easy to use.

[0006] In order to achieve the above object, the technical solution provided by the present invention is:

[0007] The gear train is connected to the gear of the lifting gear of the lifting gear, and the gear train is connected to the gear of the lifting gear by the spring, and the gear train is connected to the gear of the lifting gear by the spring, so that the lifting gear of the lifting gear can be effectively prevented from slipping out of the lifting gear by the spring.

[0008] Specifically, a hole stopper is fixed inside the lower end of the connecting sleeve, the upper end of the hook passes through the hole stopper and is located inside the connecting sleeve, a stop ring is fixed to the upper end of the hook, a spring is arranged between the stop ring and the hole stopper, the upper end of the spring is tightly against the stop ring, and the lower end of the spring is tightly against the hole stopper.

[0009] Specifically, a fixing block is fixed to the upper end of the hole stopper, and after the hook moves downward, the upper end of the fixing block can tightly abut against the lower end of the stop ring.

[0010] Specifically, a stopper is fixed to the upper end of the slide rod.

[0011] Specifically, a plurality of balls are installed at the lower end of the bottom plate.

[0012] Specifically, the axes of the first gear and the second gear are parallel, and the second gear is located below the first gear.

[0013] Specifically, the bottom plate is located below the hook.

[0014] Specifically, a lifting lug is fixed on the upper end of the connecting sleeve.

[0015] When in use, the crane lowers the hook, and then the staff hangs the lifting rope into the hook from the opening of the hook. The crane then drives the hook to move upward, and lifts the object as the hook moves upward. After the object is lifted, under the action of the gravity of the object, the hook compresses the spring and moves downward. Under the action of the engagement of the first gear and the first rack, the first gear and the first connecting rod rotate. After the first connecting rod rotates, the opening of the hook is blocked. Under the blocking action of the first connecting rod, the lifting rope can be prevented from falling out of the hook during the process of the hook driving the object to move.

[0016] After the object is hoisted to the designated location, the crane moves the hook downward. When the hook is not under force, the spring makes the hook move upward as a whole. When the hook is restored upward, the first connecting rod is restored, and the first connecting rod no longer blocks the rope in the hook. When the bottom plate contacts the hoisted object, the hook continues to move downward, the sliding rod and the second gear will move upward relative to the hook, the second gear and the second connecting rod rotate, and the second connecting rod can pull out the rope in the hook when it rotates, thereby realizing automatic unhooking operation.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the lifting rope is in the hook and is lifted, the hook moves downward under the gravity of the object, and the first connecting rod rotates to prevent the lifting rope in the hook from coming out of the hook, thereby preventing the object from shaking too much and coming off the hook.

[0019] 2. After the object is hoisted to the designated location, the hook is lowered. When the hook is not under force, the spring restores the upper end of the hook in the connecting sleeve. At the same time, the first connecting rod is restored, and the first connecting rod no longer blocks the rope in the hook. When the bottom plate contacts the hoisted object, the hook is lowered, and the slide bar and the second gear will move upward relative to the hook, and the second gear and the second connecting rod will rotate. When the second connecting rod rotates, the rope in the hook can be pulled out, thereby realizing automatic unhooking operation.

[0020] 3. By arranging a fixing block in the connecting sleeve, the upper end of the fixing block can block the retaining ring, so that the spring can be prevented from being over-compressed when the hook lifts the object, and the spring can be effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the front view of this lifting tool.

[0022] Figure 2 A 3D view of this lifting tool.

[0023] Figure 3 This is a cross-sectional view of this lifting tool.

[0024] Figure 4 This is a schematic diagram of the object after the hook lifts it.

[0025] Figure 5 It is a schematic diagram of the connection between the second gear and the second connecting rod.

[0026] Figure 6 It is a schematic diagram of the cooperation between the sliding rod and the second rack.

[0027] Figure 7 This is a schematic diagram of the lifting tool being automatically unhooked.

[0028] The names of the parts in the accompanying drawings are: 1. lifting ear; 2. connecting sleeve; 3. first rack; 4. first gear; 5. first connecting rod; 6. hook; 7. sliding rod; 8. bottom plate; 9. ball; 10. stopper; 11. second gear; 12. second connecting rod; 13. second rack; 14. fixing block; 15. spring; 16. lifting rope. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] The main purpose of the present invention is to provide a marine safety lifting tool with anti-unhooking function and automatic unhooking function, which is convenient to use. The marine safety lifting tool has an anti-unhooking function, which can prevent the lifting rope 16 from falling out of the hook 6 when lifting objects and causing safety accidents. At the same time, it has an automatic unhooking function after the object is lifted, which is convenient to use.

[0031] like Figure 1-Figure 7 As shown, a marine safety lifting tool comprises a connecting sleeve 2, and a lifting lug 1 is fixed on the upper end of the connecting sleeve 2.

[0032] The upper end of the hook 6 is elastically slidably arranged in the connecting sleeve 2, and the hook 6 can slide in the axial direction of the connecting sleeve 2. A hole stopper is fixed in the lower end of the connecting sleeve 2, and the upper end of the hook 6 passes through the hole stopper and is located in the connecting sleeve 2. A stopper ring is fixed on the upper end of the hook 6, and a spring 15 is arranged between the stopper ring and the hole stopper, and the upper end of the spring 15 is tightly against the stopper ring, and the lower end of the spring 15 is tightly against the hole stopper.

[0033] The upper end of the hole block is fixed with a fixing block 14, and the upper end of the fixing block 14 can be tightly against the lower end of the blocking ring after the hook 6 moves downward. By arranging the fixing block 14 in the connecting sleeve 2, the upper end of the fixing block 14 can block the blocking ring, and the spring 15 can be prevented from being overly compressed when the hook 6 lifts an object, which can effectively protect the spring 15.

[0034] One side of the hook 6 below the connecting sleeve 2 is rotatably connected to the first gear 4, and a vertical first rack 3 is provided on one side of the first gear 4. The first rack 3 is meshed with the first gear 4, and the first rack 3 is fixed on the connecting sleeve 2. A first connecting rod 5 is fixed on the first gear 4. After the hook 6 is forced to move downward, the first connecting rod 5 rotates and prevents the lifting rope 16 in the hook 6 from escaping from the hook 6.

[0035] A vertical slide bar 7 is slidably provided in the vertical direction on the other side of the hook 6 below the connecting sleeve 2, and a stopper 10 is fixed on the upper end of the slide bar 7. The stopper 10 can limit the slide bar 7 and prevent the slide bar 7 from separating from the hook 6. A bottom plate 8 is fixed at the lower end of the slide bar 7, and the bottom plate 8 is located below the hook 6. A plurality of balls 9 are installed at the lower end of the bottom plate 8. A second rack 13 parallel to the slide bar 7 is fixed, and a second gear 11 is rotatably connected to the hook 6 on one side of the second rack 13. The axes of the first gear 4 and the second gear 11 are parallel, and the second gear 11 is located below the first gear 4. The second rack 13 is meshed with the second gear 11, and a second connecting rod 12 is fixed on the second gear 11. When the bottom plate 8, the slide bar 7 and the second rack 13 go up, the second gear 11 drives the second connecting rod 12 to rotate and can pull the rope 16 in the hook 6 out of the hook 6.

[0036] When in use, the crane lowers the hook 6, and then the staff hangs the lifting rope 16 from the opening of the hook 6. The crane then drives the hook 6 to move upward, and the hook 6 lifts the object when moving upward. After the object is lifted, under the action of the gravity of the object, the hook 6 compresses the spring 15 and moves downward. Under the action of the engagement of the first gear 4 and the first rack 3, the first gear 4 and the first connecting rod 5 rotate. After the first connecting rod 5 rotates, the opening of the hook 6 is blocked. Under the blocking action of the first connecting rod 5, the lifting rope 16 can be prevented from falling out of the hook 6 during the process of the hook 6 driving the object to move.

[0037] After the object is lifted to the designated position, the crane moves the hook 6 downward. When the hook 6 is not subjected to force, the spring 15 moves the hook 6 upward as a whole. When the hook 6 is restored upward, the first connecting rod 5 is restored, and the first connecting rod 5 no longer blocks the lifting rope 16 in the hook 6.

[0038] When the bottom plate 8 contacts the object to be lifted, the hook 6 below continues to move downward under the action of gravity of the hook 6, and the slide bar 7 and the second gear 11 move upward relative to the hook 6, and the second gear 11 and the second connecting rod 12 rotate. When the second connecting rod 12 rotates, the rope 16 in the hook 6 can be pulled out, thereby realizing automatic unhooking operation.

[0039] In this embodiment, by arranging the ball bearings 9 at the lower end of the bottom plate 8, after the ball bearings 9 on the bottom plate 8 come into contact with the object being hoisted, the bottom plate 8 is facilitated to move on the object being hoisted, and after the crane swings its arm, the hook 6 is facilitated to move away from the hoisting rope 16, and when the hook 6 is lifted, the hook can be prevented from hooking the hoisting rope 16 again. The bottom plate 8 comes into contact with the object being hoisted through the ball bearings 9, and the bottom plate 8 can be prevented from scratching the object being hoisted when the object is moving.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A marine safety lifting tool, comprising a connecting sleeve (2), characterized in that: The upper end of the hook (6) is elastically slidably arranged in the connecting sleeve (2), and the hook (6) can slide in the axial direction of the connecting sleeve (2). One side of the hook (6) below the connecting sleeve (2) is rotatably connected to a first gear (4), and a vertical first rack (3) is arranged on one side of the first gear (4). The first rack (3) meshes with the first gear (4), and the first rack (3) is fixed on the connecting sleeve (2). A first connecting rod (5) is fixed on the first gear (4). After the hook (6) is forced downward, the first connecting rod (5) rotates and prevents the lifting rope (16) in the hook (6) from falling out of the hook (6). The hook below the connecting sleeve (2) A vertical slide bar (7) is slidably arranged in the vertical direction on the other side, a bottom plate (8) is fixed at the lower end of the slide bar (7), a second rack (13) parallel to the slide bar (7) is fixed on the slide bar (7), a second gear (11) is rotatably connected to the hook (6) on one side of the second rack (13), the second rack (13) is meshed with the second gear (11), a second connecting rod (12) is fixed on the second gear (11), when the bottom plate (8), the slide bar (7) and the second rack (13) move upward, the second gear (11) drives the second connecting rod (12) to rotate and can pull the lifting rope (16) in the hook (6) out of the hook (6).

2. A marine safety lifting tool according to claim 1, characterized in that: A hole stopper is fixed inside the lower end of the connecting sleeve (2), the upper end of the hook (6) passes through the hole stopper and is located inside the connecting sleeve (2), a stop ring is fixed to the upper end of the hook (6), a spring (15) is arranged between the stop ring and the hole stopper, the upper end of the spring (15) is tightly against the stop ring, and the lower end of the spring (15) is tightly against the hole stopper.

3. A marine safety lifting tool according to claim 1, characterized in that: A fixing block (14) is fixed to the upper end of the hole stopper, and after the hook (6) moves downward, the upper end of the fixing block (14) can tightly abut against the lower end of the stop ring.

4. A marine safety lifting tool according to claim 1, characterized in that: A stopper (10) is fixed to the upper end of the slide rod (7).

5. A marine safety lifting tool according to claim 1, characterized in that: A plurality of balls (9) are installed at the lower end of the bottom plate (8).

6. A marine safety lifting tool according to claim 1, characterized in that: The axes of the first gear (4) and the second gear (11) are parallel, and the second gear (11) is located below the first gear (4).

7. A marine safety lifting tool according to claim 1, characterized in that: The bottom plate (8) is located below the hook (6).

8. A marine safety lifting tool according to claim 1, characterized in that: A lifting ear (1) is fixed to the upper end of the connecting sleeve (2).

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