Chain block for ship
By setting up waterproof and lubricating structures on the hand chain hoist, the problems of chain rust and jamming are solved, and the smooth operation and durability of the equipment are achieved.
Patent Information
- Application Number
- CN202422980555.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-12-04
AI Technical Summary
The chain of the existing hand chain hoist is easy to rust after being wetted by rain, causing it to get stuck during use, affecting the smoothness of the equipment.
A hand chain hoist with waterproof and lubrication structures is designed. The waterproof structure prevents water stains from adhering through the cooperation of arc plates, clamping blocks, trapezoidal blocks, springs and support rods; the lubrication structure applies lubricating oil to the chain surface through an oil collecting box, oil filling pipe, oil guide pipe and sponge pad to prevent rust.
It effectively prevents the chain from rusting, ensures the smooth use of the equipment, reduces the difficulty of disassembly and assembly, and improves the durability and service life of the equipment.
Smart Images
Figure CN223357292U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hand chain hoists, in particular to a hand chain hoist used for ships. Background Art
[0002] A hand chain hoist, also known as a magic hoist, chain hoist, chain hoist, chain hoist, or manual hoist, is a simple, portable, and manual lifting mechanism. It's also called a "ring chain hoist" or "chain hoist." It's suitable for lifting small equipment and cargo over short distances, with lifting capacities generally not exceeding 10 tons, though the largest can reach 20 tons. The lifting height generally does not exceed 6 meters. The chain hoist's casing is made of high-quality alloy steel, which is durable, wear-resistant, and highly safe. To lift an object, the hand chain is pulled clockwise, rotating the hand chain wheel. To lower the object, the hand chain is pulled counterclockwise, disengaging the brake seat from the brake pads. The ratchet wheel, activated by the pawl, stops, and the five-toothed shaft drives the lifting sprocket in the opposite direction, allowing for smooth lifting and lowering. Hand chain hoists are a common lifting device used in shipbuilding, ship repair, and cargo loading and unloading operations.
[0003] Since the hand chain of the existing hand chain hoist is exposed to the outside, it will rust when it is wet by rain, causing the chain to get stuck when the user pulls the chain. Therefore, a hand chain hoist for ships is proposed. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a hand chain hoist for ships.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a hand chain hoist for ships, comprising a mounting frame, a first hook is provided on the top of the mounting frame, a guide wheel is provided inside the mounting frame, a lifting chain is provided on the guide wheel, a second hook is provided at one end of the lifting chain, a cover is fixedly provided on one side of the mounting frame, a sprocket is provided inside the cover, a hand chain is provided on the sprocket, a waterproof structure is provided on the top of the cover, and a lubrication structure is provided inside the mounting frame.
[0006] As a further description of the above technical solution:
[0007] The waterproof structure includes a positioning box fixedly connected to the top of the cover shell, a pull rod is movably provided on the inner wall of one side of the positioning box, a clamping block is fixedly provided at one end of the pull rod, a support rod is inserted into the positioning box, a trapezoidal block is fixedly provided on one side of the support rod, an arc-shaped plate is fixedly provided on the top of the support rod, and two limit rods are fixedly provided on the bottom of the arc-shaped plate.
[0008] As a further description of the above technical solution:
[0009] The front and back sides of the positioning box are both fixedly provided with limiting blocks, the tops of the limiting blocks are provided with round holes, and the limiting rods are adapted to the round holes.
[0010] As a further description of the above technical solution:
[0011] The sides of the trapezoidal block and the clamping block that are close to each other are both provided with inclined surfaces, and the two inclined surfaces are parallel.
[0012] As a further description of the above technical solution:
[0013] A spring is sleeved on the pull rod, one end of the spring fits against the inner wall of one side of the positioning box, and the other end of the spring fits against one side of the clamping block. Two sliding rods are fixed on one side of the clamping block, and the two sliding rods are movably connected to the inner wall of one side of the positioning box.
[0014] As a further description of the above technical solution:
[0015] The lubrication structure includes an oil collecting box fixedly connected to the mounting frame, an oil filling pipe is provided on the top of the oil collecting box, a fixing seat is fixedly provided on one side of the oil collecting box, a sponge pad is provided on one side of the fixing seat, and an oil guide pipe is fixedly provided on one side of the oil collecting box, one end of the oil guide pipe passes through the fixing seat and fits with the sponge pad.
[0016] As a further description of the above technical solution:
[0017] The inner walls of the first hook and the second hook are both provided with rectangular grooves, and the depth of the rectangular grooves is five millimeters.
[0018] The utility model has the following beneficial effects:
[0019] 1. Compared with the existing technology, the hand chain hoist for ships can block water stains by setting an arc plate to prevent water stains from adhering to the hand chain, thereby reducing the probability of the hand chain rusting due to rain, ensuring the smooth use of the equipment, and also by setting a card block, trapezoidal block, spring and support rod, the arc plate can be quickly installed, reducing the difficulty of disassembly and assembly.
[0020] 2. Compared with the existing technology, the hand chain hoist for ships is equipped with an oil collecting box, an oil filling pipe, an oil guide pipe, a fixing seat and a sponge pad. When using the equipment, lubricating oil is added to the oil collecting box. The oil in the oil collecting box flows out through the oil guide pipe and is absorbed by the sponge pad. When the lifting chain moves, it will fit with the sponge pad. The oil adheres to the surface of the lifting chain to play a maintenance role and reduce the probability of the chain rusting. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a hand chain hoist for ships proposed by the utility model;
[0022] Figure 2 This is an exploded schematic diagram of a waterproof structure in a hand chain hoist for ships proposed by the present invention;
[0023] Figure 3 This is a first-perspective exploded schematic diagram of a lubrication structure in a hand chain hoist for ships proposed by the present invention;
[0024] Figure 4 This is a second perspective exploded schematic diagram of a lubrication structure in a hand chain hoist for ships proposed by the utility model.
[0025] Legend:
[0026] 1. Mounting frame; 2. First hook; 3. Guide wheel; 4. Lifting chain; 5. Second hook; 6. Cover; 7. Sprocket; 8. Hand chain; 9. Waterproof structure; 901. Positioning box; 902. Limit block; 903. Pull rod; 904. Block; 905. Sliding rod; 906. Spring; 907. Support rod; 908. Trapezoidal block; 909. Arc plate; 910. Limit rod; 10. Lubrication structure; 101. Oil collecting box; 102. Oil filling pipe; 103. Oil guide pipe; 104. Fixing seat; 105. Sponge pad. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0028] Reference Figures 1 to 4 The utility model provides a hand chain hoist for ships: it includes a mounting frame 1, a first hook 2 is provided on the top of the mounting frame 1, a guide wheel 3 is provided inside the mounting frame 1, a lifting chain 4 is provided on the guide wheel 3, and a second hook 5 is provided at one end of the lifting chain 4. The inner walls of the first hook 2 and the second hook 5 are both provided with a rectangular groove, the depth of the rectangular groove is five millimeters, and the setting of the rectangular groove can prevent the hook from being unhooked. A cover shell 6 is fixedly provided on one side of the mounting frame 1, a sprocket 7 is provided in the cover shell 6, and a hand chain 8 is provided on the sprocket 7;
[0029] In order to achieve the purpose of waterproofing, a waterproof structure 9 is provided on the top of the cover shell 6. The waterproof structure 9 includes a positioning box 901 fixedly connected to the top of the cover shell 6. A pull rod 903 is movably provided on the inner wall of one side of the positioning box 901. A clamping block 904 is fixed at one end of the pull rod 903. A spring 906 is sleeved on the pull rod 903. One end of the spring 906 fits against the inner wall of one side of the positioning box 901, and the other end of the spring 906 fits against one side of the clamping block 904. Two sliding rods 905 are fixed on one side of the clamping block 904. The two sliding rods 905 are movably connected to the inner wall of one side of the positioning box 901. A support rod 907 is inserted into the positioning box 901. A trapezoidal block 908 is fixed on one side of the support rod 907. The trapezoidal block 908 is close to the clamping block 904. One side is provided with an inclined surface, and the two inclined surfaces are parallel. A curved plate 909 is fixedly provided on the top of the support rod 907, and two limit rods 910 are fixedly provided on the bottom of the curved plate 909. The front and back sides of the positioning box 901 are fixedly provided with limit blocks 902. The top of the limit block 902 is provided with a round hole, and the limit rod 910 is adapted to the round hole. The setting of the limit block 902 and the limit rod 910 can achieve the purpose of rapid positioning. The curved plate 909 can prevent water stains from acting on the hand chain 8, thereby reducing the probability of rusting of the hand chain 8 due to rain, ensuring the smooth use of the equipment, and the coordinated use of the clamping block 904, the trapezoidal block 908, the spring 906 and the support rod 907 can achieve rapid installation of the curved plate 909 and reduce the difficulty of disassembly and assembly;
[0030] In order to achieve the purpose of lubrication, a lubrication structure 10 is provided in the mounting frame 1, and the lubrication structure 10 includes an oil collecting box 101 fixedly connected to the mounting frame 1, and an oil filling pipe 102 is provided on the top of the oil collecting box 101, and a fixing seat 104 is fixed on one side of the oil collecting box 101, and a sponge pad 105 is provided on one side of the fixing seat 104. An oil guide pipe 103 is fixed on one side of the oil collecting box 101, and one end of the oil guide pipe 103 passes through the fixing seat 104 and fits with the sponge pad 105. The oil in the oil collecting box 101 flows out through the oil guide pipe 103 and is absorbed by the sponge pad 105. When the lifting chain 4 moves, it will fit with the sponge pad 105. The oil attached to the surface of the lifting chain 4 can play a maintenance role and reduce the probability of the chain rusting.
[0031] Working principle: When in use, first install the curved plate 909 on the top of the cover 6, insert the support rod 907 and the two limit rods 910 into the circular holes on the top of the positioning box 901 and the limit block 902 respectively, and the support rod 907 drives the trapezoidal block 908 on one side, and the trapezoidal block 908 squeezes the card block 904. When the trapezoidal block 908 and the inclined surface on one side of the card block 904 are out of contact, the spring 906 drives the card block 904 to reset and get stuck on the top of the trapezoidal block 908, thereby realizing the positioning of the support rod 907. The curved plate 909 can prevent water stains from acting on the hand chain 8. Thereby, the probability of the hand chain 8 rusting due to rain can be reduced, and the smooth use of the equipment can be ensured. The coordinated use of the block 904, the trapezoidal block 908, the spring 906 and the support rod 907 can realize the rapid installation of the arc plate 909, reducing the difficulty of disassembly and assembly. Then, lubricating oil is added to the oil collecting box 101. The oil in the oil collecting box 101 flows out through the oil guide pipe 103 and is absorbed by the sponge pad 105. When the lifting chain 4 moves, it will fit with the sponge pad 105. The oil attached to the surface of the lifting chain 4 can play a maintenance role and reduce the probability of the chain rusting.
[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A hand chain hoist for a ship, comprising a mounting frame (1), characterized in that: A first hook (2) is provided on the top of the mounting frame (1), a guide wheel (3) is provided inside the mounting frame (1), a lifting chain (4) is provided on the guide wheel (3), a second hook (5) is provided at one end of the lifting chain (4), a cover (6) is fixedly provided on one side of the mounting frame (1), a sprocket (7) is provided inside the cover (6), a hand chain (8) is provided on the sprocket (7), a waterproof structure (9) is provided on the top of the cover (6), and a lubrication structure (10) is provided inside the mounting frame (1).
2. A hand chain hoist for ships according to claim 1, characterized in that: The waterproof structure (9) includes a positioning box (901) fixedly connected to the top of the cover shell (6), a pull rod (903) is movably provided on the inner wall of one side of the positioning box (901), a clamping block (904) is fixedly provided at one end of the pull rod (903), a support rod (907) is inserted into the positioning box (901), a trapezoidal block (908) is fixedly provided on one side of the support rod (907), an arc plate (909) is fixedly provided on the top of the support rod (907), and two limiting rods (910) are fixedly provided at the bottom of the arc plate (909).
3. The hand chain hoist for ships according to claim 2, characterized in that: The front and back sides of the positioning box (901) are both fixedly provided with limiting blocks (902), the top of the limiting blocks (902) is provided with a circular hole, and the limiting rod (910) is adapted to the circular hole.
4. The hand chain hoist for ships according to claim 2, characterized in that: The trapezoidal block (908) and the clamping block (904) are both provided with inclined surfaces on their adjacent sides, and the two inclined surfaces are parallel.
5. The hand chain hoist for ships according to claim 2, characterized in that: A spring (906) is sleeved on the pull rod (903), one end of the spring (906) is in contact with the inner wall of one side of the positioning box (901), and the other end of the spring (906) is in contact with one side of the clamping block (904). Two sliding rods (905) are fixed on one side of the clamping block (904), and the two sliding rods (905) are movably connected to the inner wall of one side of the positioning box (901).
6. The hand chain hoist for ships according to claim 1, characterized in that: The lubrication structure (10) comprises an oil collecting box (101) fixedly connected to the mounting frame (1), an oil filling pipe (102) being provided on the top of the oil collecting box (101), a fixing seat (104) being fixedly provided on one side of the oil collecting box (101), a sponge pad (105) being provided on one side of the fixing seat (104), an oil guide pipe (103) being fixedly provided on one side of the oil collecting box (101), one end of the oil guide pipe (103) passing through the fixing seat (104) and being in contact with the sponge pad (105).
7. The hand chain hoist for ships according to claim 1, characterized in that: The inner walls of the first hook (2) and the second hook (5) are both provided with rectangular grooves, and the depth of the rectangular grooves is five millimeters.