A foldable gadget suitable for various types of hole covers

Abstract

This utility model relates to the field of portable lifting equipment technology, and in particular to a foldable small hoist suitable for various types of manhole covers. The small hoist includes a fixed base, a support rod, a boom, a first adjusting rod, a second adjusting rod, and a connecting plate. The support rod is vertically mounted on the fixed base. One end of the boom is connected to the upper end of the support rod, and the other end is equipped with a pulley system. A winch on the support rod is connected to a hook via a cable. The first adjusting rod is connected to both sides of the fixed base via a first rotating shaft, and the other end of the first adjusting rod is connected to a second adjusting rod via a second rotating shaft. A connecting plate is installed on the inner side of the two second adjusting rods. Through the double-shaft rotation structure of the first and second adjusting rods, the distance between the two second adjusting rods can be flexibly adjusted without disassembly: when passing through, it retracts to its minimum width to adapt to narrow passages and warehouse doors; when working, it unfolds to the corresponding size to cover manhole covers of different specifications throughout the ship, achieving seamless switching between pushing and working states, and solving the contradiction of a small hoist being too wide to pass through or too narrow to be usable.

Description

Technical Field

[0001] This utility model relates to the field of portable hoisting equipment technology, and in particular to a foldable small hoist for miscellaneous items suitable for various types of hole covers. Background Technology

[0002] Oil tankers and bulk carriers are typically equipped with small cargo cranes for lifting miscellaneous items from the holds. These small cranes are usually stored in warehouses and are only pushed or moved to the hatch area for operation when needed.

[0003] A standard small cargo hoist, if it can fit various types of hatch covers on a ship, would be quite wide. However, the doorways of ship's warehouses and passageways are relatively narrow, making it difficult for a wider cargo hoist to pass through. Therefore, either the cargo hoist is made narrower for easy pushing, but cannot fit various types of hatch covers, or it is made wider to fit various types of hatch covers, but the crew would have to disassemble it before carrying it. Utility Model Content

[0004] To address the technical problem that existing small cargo hangers cannot simultaneously handle narrow passages and be compatible with various types of manhole covers, this utility model provides a foldable small cargo hanger suitable for a variety of manhole covers.

[0005] Therefore, the present invention provides the following technical solution: A foldable small hoist for various types of hole covers includes a fixed base, a support rod, and a boom. The support rod is vertically mounted on the fixed base. One end of the boom is connected to the upper end of the support rod, and a pulley block is installed at the other end of the boom. A winch is mounted on the support rod, and the cable on the winch passes sequentially around the fixed pulley and the movable pulley of the pulley block, with the end connected to a hook. The two sides of the fixed base are rotatably connected to a first adjusting rod via a first rotating shaft. The ends of the first adjusting rods away from the fixed base are rotatably connected to a second adjusting rod via a second rotating shaft. Connecting plates are installed on the opposite inner sides of the two second adjusting rods.

[0006] Furthermore, it also includes a limiting plate, a limiting block, and a limiting pin; limiting blocks are installed at both ends of the first adjusting rod, and limiting plates are installed at the ends of the fixed base and the second adjusting rod near the first adjusting rod, with the limiting plates located below the limiting blocks; limiting holes are provided on the limiting plates along a circumferential trajectory with the corresponding axes of the first and second rotating shafts as the center; a pin hole is provided on the limiting block, and the limiting pin passes through the pin hole and is inserted into the corresponding limiting hole.

[0007] Furthermore, the connecting plate has a first cover hole near the second adjusting rod, with two first cover holes located on both sides of the connecting plate. The connecting plate has a third cover hole away from the second adjusting rod, with two third cover holes located on both sides of the connecting plate. The connecting plate has a second cover hole between the first cover hole and the third cover hole, with two second cover holes located on both sides of the connecting plate.

[0008] Furthermore, a sleeve is vertically installed on the fixed base, and a support rod is inserted into the sleeve; a first bolt is provided on the sleeve, and the end of the first bolt abuts against the support rod.

[0009] Furthermore, a fixing block is installed on the support rod, and a first fixing eye plate and a second fixing eye plate are provided on the boom; one end of the fixing block is hinged to the connecting rod by a pin, and the other end of the connecting rod can be detachably connected to the first fixing eye plate or the second fixing eye plate by a pin.

[0010] Furthermore, a fixing cylinder is installed on each side of the fixing base, and a positioning rod is inserted into each of the two fixing cylinders. A second bolt is provided on the fixing cylinder, and the end of the second bolt is pressed against the positioning rod. The two positioning rods are on the same horizontal straight line, and the two ends of the two positioning rods that are far apart from each other are pressed against the inner sides of the two sides of the ship's clamp plate.

[0011] Furthermore, the boom is equipped with a handle block, and a handle rope is connected to the handle block.

[0012] Furthermore, wheels are installed at the bottom of the fixed base and the second adjusting rod.

[0013] Furthermore, the distance between the two first cover holes is greater than the distance between the two third cover holes, and the distance between the two second cover holes is equal to the distance between the two third cover holes.

[0014] A reinforcing rod is connected between the sleeve and the fixed base.

[0015] Advantages and positive effects of this utility model: This application utilizes a dual-shaft rotating structure with a first and second adjusting rod, allowing for flexible adjustment of the distance between the two second adjusting rods without disassembling any components. When passing through, it retracts to its minimum width to match the narrowest passageways and warehouse doors of a ship; when operating, it expands to the corresponding size to cover various sizes of openings throughout the ship, achieving seamless switching between pushing and operating modes. This completely resolves the contradiction of small cranes being too wide to pass through or too narrow to be usable.

[0016] The dual adjusting rods are connected by a rotating shaft. When unfolded, the fixed base and the two adjusting rods on both sides form a triangular support structure. Combined with the tight fit between the connecting plate and the hole cover, this can disperse lateral forces during hoisting and avoid the risk of tilting commonly seen in narrow-body hoists. In addition, it eliminates the need for frequent disassembly, reducing the probability of parts wear and loss, and lowering safety hazards caused by improper assembly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the foldable small utility hook suitable for various types of hole covers, provided by this utility model, in its usage state.

[0019] Figure 2 This is a front view of the folded state of a foldable small utility hook suitable for various types of hole covers, provided by this utility model.

[0020] Figure 3 This utility model provides a top view of a foldable small utility hook suitable for various types of hole covers, showing its usage status.

[0021] Figure 4 This utility model provides a top view of a foldable small utility hook suitable for various types of hole covers, in its folded state.

[0022] Figure 5 This utility model provides a top view of a foldable small utility hook suitable for various types of hole covers, showing its usage state for a third type of hole cover.

[0023] Figure 6 This utility model provides a top view of a foldable small utility hook suitable for various types of hole covers, showing its usage state for a second type of hole cover.

[0024] Figure 7 This utility model provides a top view of a foldable small utility hook suitable for various types of hole covers, showing its usage state for the first type of hole cover.

[0025] In the diagram: 1. Fixed base; 2. Second adjusting rod; 3. Connecting plate; 4. Wheel; 5. Limiting block; 6. Limiting plate; 7. Winch; 8. Positioning rod; 9. Cable; 10. Boom; 11. Hook; 12. Handle rope; 13. First fixing eye plate; 14. Connecting rod; 15. Support rod; 16. First adjusting rod; 17. Limiting hole; 18. Pin hole; 19. First cover hole; 20. Second cover hole; 21. Third cover hole; 22. Sleeve; 23. First bolt; 24. Fixing block; 25. Second fixing eye plate; 26. Fixing cylinder; 28. Handle block; 29. ​​Reinforcing rod. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] This utility model provides a foldable small hanging device suitable for various types of hole covers, such as... Figure 1 The system includes a fixed base 1, a support rod 15, and a boom 10. A sleeve 22 is vertically mounted on the fixed base 1, and the support rod 15 is inserted into the sleeve 22. A first bolt 23 is mounted on the sleeve 22, and the end of the first bolt 23 abuts against the support rod 15. Two symmetrically arranged reinforcing rods 29 are obliquely connected between the sleeve 22 and the fixed base 1. The two ends of the reinforcing rods 29 are detachably connected to the middle of the support rod 15 and the edge of the fixed base 1 by bolts, respectively, to enhance the bending resistance of the sleeve 22 when the boom 10 is under load. One end of the boom 10 is connected to the upper end of the support rod 15, and a pulley block is installed at the other end of the boom 10. A winch 7 is installed on the support rod 15, and the cable 9 on the winch 7 passes through the fixed pulley and the movable pulley of the pulley block in sequence, and the end is connected to the hook 11. The reinforcing rod 29 connects the support rod 15 and the fixed base 1.

[0028] When the winch 7 is working, the drive cable 9 drives the fixed and movable pulleys of the pulley block, raising and lowering the hook 11 connected to the end to achieve the lifting operation of debris. By adjusting the rotation angle of the support rod 15, the working position of the boom 10 and hook 11 can be changed to adapt to the lifting needs of different positions, while the power output of the winch 7 provides stable lifting and lowering power for the hook 11. The rotatable design of the support rod 15, combined with the fixing function of the first bolt 23, allows the boom 10 to flexibly adjust its working direction, breaking through the limitations of fixed-position lifting, and covering the debris lifting needs of different areas in the cabin without the need for frequent relocation of the entire unit.

[0029] like Figure 3 As shown, the two sides of the fixed base 1 are rotatably connected to the first adjusting rod 16 via the first rotating shaft. The end of the first adjusting rod 16 away from the fixed base 1 is rotatably connected to the second adjusting rod 2 via the second rotating shaft. Connecting plates 3 are installed on the inner sides of the two second adjusting rods 2 that are close to each other. It also includes a limiting plate 6, a limiting block 5, and a limiting pin; each end of the first adjusting rod 16 is equipped with a limiting block 5, and the fixed base and the ends of the second adjusting rod 2 near the first adjusting rod 16 are respectively equipped with a limiting plate 6, and the limiting plate 6 is located below the limiting block 5; the limiting plate 6 is provided with a limiting hole 17 along the circumferential trajectory with the axis of the corresponding first rotating shaft and the axis of the second rotating shaft as the center; the limiting block 5 is provided with a pin hole 18, and the limiting pin passes through the pin hole 18 and is inserted into the corresponding limiting hole 17.

[0030] like Figures 3-4 As shown, the first adjusting rods 16 on both sides of the fixed base 1 rotate via the first rotating shaft. The ends of the first adjusting rods 16 away from the fixed base 1 are connected to the second adjusting rods 2 via the second rotating shaft, allowing the second adjusting rods 2 to rotate as well, thereby changing the distance between the two second adjusting rods 2 and the overall unfolding angle. During the adjustment process, the limiting blocks 5 at both ends of the first adjusting rods 16 cooperate with the limiting plates 6 on the fixed base and the second adjusting rods 2. When the desired angle is reached, the limiting pin passes through the pin hole 18 on the limiting block 5 and is inserted into the limiting hole 17 on the limiting plate 6 corresponding to the circumferential trajectory, thus fixing the rotation angle of the first adjusting rods 16 and the second adjusting rods 2. This ensures that the connecting plates 3 on the inner sides of the two second adjusting rods 2 can be stably aligned with different specifications of hole covers, achieving precise docking with the hole covers. The rotational design of the first adjusting rods 16 and the second adjusting rods 2 allows for flexible adjustment of the distance between the two second adjusting rods 2. Combined with the connecting plate 3, it can adapt to various hole covers of different widths, solving the problem of limited adaptability due to the fixed width of traditional equipment. The combination of the limiting plate 6, the limiting block 5, and the limiting pin secures the adjusting rod at a set angle, preventing equipment swaying or the connecting plate 3 from detaching from the cover due to accidental rotation of the adjusting rod during operation, thus ensuring the safety of the hoisting operation. Angle fixing is achieved simply by rotating the adjusting rod and inserting the limiting pin, eliminating the need for complex disassembly and assembly steps, reducing the operational difficulty for crew members, saving time in adjusting the equipment, and improving operational efficiency.

[0031] like Figure 3As shown, a connecting plate 3 is installed on the inner side of the two second adjusting rods 2. The connecting plate 3 has a first cover hole 19 near the second adjusting rod 2. The two first cover holes 19 are located on both sides of the connecting plate 3. The connecting plate 3 has a third cover hole 21 away from the second adjusting rod 2. The two third cover holes 21 are located on both sides of the connecting plate 3. The connecting plate 3 has a second cover hole 20 between the first cover hole 19 and the third cover hole 21. The two second cover holes 20 are located on both sides of the connecting plate 3. The distance between the two first cover holes 19 is greater than the distance between the two third cover holes 21. The distance between the two second cover holes 20 is equal to the distance between the two third cover holes 21.

[0032] like Figures 5-7 As shown, when the first adjusting rod 16 and the second adjusting rod 2 are rotated and adjusted to the width of the fitting orifice cover, the connecting plate 3 aligns with the edge of the orifice cover. Depending on the specific specifications of the orifice cover, the corresponding first cover hole 19, second cover hole 20, or third cover hole 21 can be selected. The connecting plate 3 is then fixed to the orifice cover using bolts or other connecting components, thus achieving a stable connection between the equipment and orifice covers of different specifications, providing reliable support for subsequent hoisting operations. The three sets of cover holes on the connecting plate 3, combined with the width range adjusted by the first adjusting rod 16 and the second adjusting rod 2, can cover more orifice covers of different sizes. Specifically, the first cover hole 19 has a larger spacing, suitable for wide orifice covers; the third cover hole 21 has a smaller spacing, suitable for narrow orifice covers; and the second cover hole 20 serves as a supplementary intermediate specification, further enhancing the equipment's flexibility in adapting to orifice covers.

[0033] like Figure 2 As shown, a fixing block 24 is installed on the support rod 15, and a first fixing eye plate 13 and a second fixing eye plate 25 are provided on the boom 10. The fixing block 24 is hinged to one end of the connecting rod 14 by a pin, and the other end of the connecting rod 14 can be selectively connected to the first fixing eye plate 13 or the second fixing eye plate 25 by a pin. When the connecting rod 14 is connected to the first fixing eye plate 13, the boom 10 is supported to a suitable working angle and is in an extended working state, which can be used for hoisting miscellaneous objects; when the connecting rod 14 is connected to the second fixing eye plate 25, the boom 10 is pulled back and is in a retracted state, reducing the space occupied by the equipment.

[0034] like Figure 3As shown, a fixing cylinder 26 is installed on each side of the fixed base 1. A positioning rod 8 is inserted into each of the two fixing cylinders 26. A second bolt is mounted on each fixing cylinder 26, with the end of the second bolt abutting against the positioning rod 8. The two positioning rods 8 are on the same horizontal line, with their far ends abutting against the inner sides of the ship's clamping plate. During operation, by adjusting the extension length of the positioning rods 8 within the fixing cylinders 26, the far ends of the two positioning rods 8 are brought abutting against the inner sides of the ship's clamping plate. The reaction force of the ship's clamping plate firmly fixes the fixed base 1 in the working position, preventing displacement of the equipment during hoisting. The extension length of the positioning rods 8 can be adjusted simply by tightening or loosening the second bolts. The operation is simple, and the bolt fixing method ensures that the positioning rods 8 will not extend or retract on their own during operation, guaranteeing the durability of the fixing effect.

[0035] The boom 10 is equipped with a handle block 28, and a handle rope 12 is connected to the handle block 28. When the small crane is in the retraction state, the hook 11 is pulled by the handle rope 12 to prevent the hook 11 from swaying.

[0036] Wheels 4 are installed at the bottom of the fixed base 1 and the second adjusting rod 2. This allows for easy movement of the small crane.

[0037] Working principle: First, as Figure 2 As shown, the equipment moves to the working position using the wheels 4 at the bottom of the fixed base 1 and the second adjusting rod 2. Figure 3 As shown, the overall width is adjusted by rotating the first adjusting rod 16 and the second adjusting rod 2 according to the width of the passage. During the rotation, the angle of the adjusting rod is fixed by the limiting plate 6, the limiting block 5 and the limiting pin to ensure that the equipment can pass through the narrow passage smoothly. Upon reaching the vicinity of the hatch, as Figures 5-7 As shown, readjust the first adjusting rod 16 and the second adjusting rod 2 again, so that the connecting plate 3 inside the two second adjusting rods 2 is aligned with the hole cover. Select the corresponding first cover hole 19, second cover hole 20 or third cover hole 21 on the connecting plate 3 according to the hole cover specifications, and fix the connecting plate 3 to the hole cover using the connector. At the same time, adjust the positioning rods 8 inside the fixing cylinders 26 on both sides of the fixing base 1 so that their two ends are pressed against the inner sides of the ship clamp plate, and fix them with the second bolt to further stabilize the equipment. Subsequently, as Figure 1 As shown, adjust the angle of the support rod 15 inside the sleeve 22, tighten the first bolt 23 to fix it, and then connect the connecting rod 14 to the first fixed eye plate 13 on the boom 10 so that the boom 10 is at the working angle. Start the winch 7 on the support rod 15, and the cable 9 drives the hook 11 to rise and fall through the pulley block at the end of the boom 10 to realize the hoisting of debris. After completing the assignment, such as Figure 2 , Figure 4As shown, connect the connecting rod 14 to the second fixed eye plate 25, retract the boom 10, loosen the fixing of the connecting plate 3 to the hole cover and the positioning rod 8 to the boat clamp plate, adjust the first adjusting rod 16 and the second adjusting rod 2 to the folded state, and push the equipment back to the storage location.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A foldable small utility hook suitable for various types of hole covers, characterized in that, The system includes a fixed base (1), a support rod (15), and a boom (10). The support rod (15) is vertically mounted on the fixed base (1). One end of the boom (10) is connected to the upper end of the support rod (15), and a pulley block is installed at the other end of the boom (10). A winch (7) is installed on the support rod (15). The cable (9) on the winch (7) passes through the fixed pulley and the movable pulley of the pulley block in sequence, and the end is connected to the hook (11). The two sides of the fixed base (1) are respectively rotatably connected to the first adjusting rod (16) through the first rotating shaft. The end of the first adjusting rod (16) away from the fixed base (1) is rotatably connected to the second adjusting rod (2) through the second rotating shaft. Connecting plates (3) are installed on the opposite inner sides of the two second adjusting rods (2).

2. A foldable small utility hook suitable for various types of hole covers according to claim 1, characterized in that, It also includes a limiting plate (6), a limiting block (5), and a limiting pin; a limiting block (5) is installed at each end of the first adjusting rod (16), and a limiting plate (6) is installed at the end of the fixed seat and the second adjusting rod (2) near the end of the first adjusting rod (16), and the limiting plate (6) is located below the limiting block (5); a limiting hole (17) is provided on the limiting plate (6) with the axis of the corresponding first rotating shaft and the axis of the second rotating shaft as the center of the circle along the circumference; a pin hole (18) is provided on the limiting block (5), and the limiting pin passes through the pin hole (18) and is inserted into the corresponding limiting hole (17).

3. A foldable small utility hook suitable for various types of hole covers according to claim 1, characterized in that, The connecting plate (3) is provided with a first cover hole (19) near the second adjusting rod (2), and the two first cover holes (19) are located on both sides of the connecting plate (3). The connecting plate (3) is provided with a third cover hole (21) away from the second adjusting rod (2), and the two third cover holes (21) are located on both sides of the connecting plate (3). The connecting plate (3) is provided with a second cover hole (20) between the first cover hole (19) and the third cover hole (21), and the two second cover holes (20) are located on both sides of the connecting plate (3).

4. A foldable small utility hook suitable for various types of hole covers according to claim 1, characterized in that, A sleeve (22) is vertically installed on the fixed base (1), and a support rod (15) is inserted into the sleeve (22); a first bolt (23) is provided on the sleeve (22), and the end of the first bolt (23) abuts against the support rod (15).

5. A foldable small utility hook suitable for various types of hole covers according to claim 1, characterized in that, A fixing block (24) is installed on the support rod (15), and a first fixing eye plate (13) and a second fixing eye plate (25) are provided on the boom (10); the fixing block (24) is hinged to one end of the connecting rod (14) by a pin, and the other end of the connecting rod (14) can be selectively detachably connected to the first fixing eye plate (13) or the second fixing eye plate (25) by a pin.

6. A foldable small utility hook suitable for various types of hole covers according to claim 1, characterized in that, The fixed base (1) is equipped with a fixed cylinder (26) on each side. The two fixed cylinders (26) are respectively inserted with positioning rods (8). The fixed cylinders (26) are equipped with second bolts, and the ends of the second bolts are pressed against the positioning rods (8). The two positioning rods (8) are on the same horizontal straight line, and the two ends of the two positioning rods (8) that are far apart from each other are pressed against the inner sides of the two sides of the ship's clamp plate.

7. A foldable small utility hook suitable for various types of hole covers according to claim 1, characterized in that, The boom (10) is provided with a handle block (28), and a handle rope (12) is connected to the handle block (28).

8. A foldable small utility hook suitable for various types of hole covers according to claim 1, characterized in that, Wheels (4) are installed at the bottom of the fixed base (1) and the second adjusting rod (2).

9. A foldable small utility hook suitable for various types of hole covers according to claim 3, characterized in that, The distance between the two first cover holes (19) is greater than the distance between the two third cover holes (21), and the distance between the two second cover holes (20) is equal to the distance between the two third cover holes (21).

10. A foldable small utility hook suitable for various types of hole covers according to claim 4, characterized in that, A reinforcing rod (29) is connected between the sleeve (22) and the fixed base (1).

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