Chain block of hoisting equipment
By fixing the cable inside the main body of the hand-pulled hoist and installing the hook body in the middle of the cable, the limit rod and torsion spring mechanism ensure the stability of the hook, and combining the hand zipper to drive the ratchet rotation, the cable shrinkage and cargo Lifting solves the problems of cable breakage and complicated installation caused by single-line fixation at the existing hand-pulled hoist hooks, and achieves higher stability and convenience.
Patent Information
- Application Number
- CN202420295202.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-18
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-18
AI Technical Summary
The existing hand-pulled hoists are fixedly installed in a single line at the hook, which makes it easy to cause the traction cable to break when lifting goods beyond the bearing range, and the goods cannot be hooked, and the installation methods are complicated.
A hand-pulled hoist is designed to ensure the stability of the hook by fixing and installing the cable inside the main body and installing the hook body in the middle of the cable, using the limit rod and torsion spring mechanism, and combining the hand zipper to drive the ratchet to rotate, the cable is realized Shrinkage and lifting of goods.
It effectively avoids cable breakage, simplifies the process of cargo hooking, reduces the need for bundling, and improves the stability and convenience of use of hooks.
Smart Images
Figure CN222476024U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lifting and transportation, and in particular relates to a hand chain hoist of lifting equipment. Background Art
[0002] Hand chain hoist is also called fairy gourd, chain hoist, fall chain, never fall, manual hoist. It is a manual lifting machinery that is simple to use and easy to carry. It is also called "chain hoist" or "fall chain".
[0003] It is suitable for short-distance lifting of small equipment and goods. The lifting weight generally does not exceed 10T, and the maximum can reach 20T. The lifting height generally does not exceed 6m. The shell material of the hand chain hoist is high-quality alloy steel, which is strong and wear-resistant with high safety performance. When the hand chain hoist lifts the heavy object upward, pull the manual chain clockwise to rotate the hand chain wheel. When descending, pull the hand chain counterclockwise, the brake seat separates from the brake pad, the ratchet wheel stops under the action of the pawl, and the five-tooth long shaft drives the lifting sprocket wheel to run in the opposite direction, so as to smoothly lower the heavy object. The hand chain hoist generally adopts a ratchet friction plate one-way brake, which can brake itself under load. The pawl engages with the ratchet wheel under the action of the spring, so that the brake works safely.
[0004] Since the existing hand chain hoist is installed with a single wire at the hook, the single wire is subjected to greater force when in use. When lifting goods beyond the bearing range, it is easy to cause the traction cable to break and cause losses. At the same time, when the goods cannot be hooked, the goods need to be tied up and then hooked, and the installation method is relatively complicated. Utility Model Content
[0005] The utility model aims at the problem that in the prior art, the existing hand chain hoist is fixedly installed with a single line at the hook. When in use, the single line is subjected to greater force when fixed. When lifting goods beyond the bearing range, it is easy to cause the traction cable to break, resulting in losses. At the same time, when the goods cannot be hooked, the goods need to be bundled, and the installation method is relatively complicated when the goods are hooked. The utility model proposes the following technical scheme: a hand chain hoist of a lifting equipment, comprising a main body, a ratchet is rotatably installed inside the main body, a hook is rotatably installed on the top of the main body, a limit rod is rotatably installed inside the hook, a torsion spring is fixedly installed at the rotation point, a groove is opened inside the top of the hook, the end of the limit rod can be inserted into the inside of the groove, a lifting device is provided on the main body, and the lifting device can drive the goods to move up and down.
[0006] As a preferred embodiment of the above technical solution, the lifting device includes a hand chain, and the hand chain transmission is installed inside the main body. When the hand chain rotates, it can drive the ratchet wheel inside the main body to rotate.
[0007] As a preferred embodiment of the above technical solution, a cable is provided inside the main body, two ends of the cable are respectively fixedly mounted on the inner walls at both ends of the main body, and the middle of the cable is rotatably mounted on the ratchet.
[0008] As a preferred embodiment of the above technical solution, a hook body is provided on the cable, a hook is rotatably installed on the bottom end of the hook body, a limiting rod 2 is rotatably installed inside the hook, a torsion spring is fixedly installed at the rotating position, a groove 2 is opened inside the top end of the hook, and the end of the limiting rod 2 can be inserted into the inside of the groove 2.
[0009] As a preferred embodiment of the above technical solution, a sliding groove is provided inside the hook body, and the cable is slidably installed inside the sliding groove.
[0010] As a preferred embodiment of the above technical solution, a roller is rotatably installed inside the sliding groove, both ends of the roller pass through the outer wall of the hook body, and a limit block is fixedly installed on one end of the roller passing through the hook body.
[0011] The beneficial effects of the utility model are:
[0012] By fixing both ends of the cable inside the main body and installing the hook body in the middle part of the cable, the hand chain is pulled to drive the ratchet inside the main body to rotate, thereby driving the cable to retract and lift the goods. When the goods need to be tied, the other end of the cable is connected to the outside of the goods to transport the goods up and down. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 Shown is a schematic diagram of the structure;
[0014] Figure 2 What is shown is the schematic diagram of the connection structure of the main body;
[0015] Figure 3 Shown is a schematic diagram of the connection structure of the hook body;
[0016] Figure 4 Shown is a cross-sectional view of the hook body.
[0017] In the figure: 1. main body; 2. hook; 3. limit rod 1; 4. hand chain; 5. cable; 6. hook main body; 7. sliding groove; 8. roller; 9. limit block; 10. hook; 11. limit rod 2. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.
[0019] Example
[0020] The utility model provides a hand chain hoist for lifting equipment, such as Figure 1 As shown, it includes a main body 1, a ratchet is rotatably installed inside the main body 1, a hook 2 is rotatably installed on the top of the main body 1, a limit rod 3 is rotatably installed inside the hook 2, a torsion spring is fixedly installed at the rotation point, a groove 1 is opened inside the top of the hook 2, the end of the limit rod 3 can be inserted into the inside of the groove 1, and a lifting device is provided on the main body 1, which can drive the goods to move up and down.
[0021] First, before use, the main body 1 is hung at a high place through the hook 2. When the hook 2 is hung at a high place, first press the limit rod 3 inward to hang the hook 2 at a high place, and then release the limit rod 3. The limit rod 3 will be restored to its original position by the action of the torsion spring. When the limit rod 3 is restored to its original position, the end of the limit rod 3 will be inserted into the inside of the groove 1, thereby forming a closed ring with the hook 2, so that the hook 2 can be stably hung at a high place to prevent the hook 2 from falling off.
[0022] like Figure 2-4 As shown, the lifting device includes a hand chain 4, which is transmission-mounted inside the main body 1. When the hand chain 4 rotates, it can drive the ratchet inside the main body 1 to rotate. A cable 5 is provided inside the main body 1. The two ends of the cable 5 are respectively fixedly mounted on the inner walls at both ends of the main body 1. The middle of the cable 5 is rotatably mounted on the ratchet. A hook body 6 is provided on the cable 5. A hook 10 is rotatably mounted on the bottom end of the hook body 6. A limit rod 11 is rotatably mounted inside the hook 10, and a torsion spring is fixedly mounted at the rotation point. A groove 2 is provided inside the top of the hook 10, and the end of the limit rod 11 can be inserted into the inside of the groove 2. A sliding groove 7 is provided inside the hook body 6. The cable 5 is slidably mounted inside the sliding groove 7. A roller 8 is rotatably mounted inside the sliding groove 7. Both ends of the roller 8 pass through the outer wall of the hook body 6, and the roller 8 passes through one end of the hook body 6 and is fixedly mounted with a limit block 9.
[0023] When lifting is needed, first observe whether the goods can be hung. When the goods can be hung, move the hook body 6 close to the hanging point, press the limit rod 2 11 inward, to hang the hook 10 on the hanging point, and then release the limit rod 2 11. The limit rod 2 11 will be restored to its original position by the action of the torsion spring. When the limit rod 2 11 is restored to its original position, the end of the limit rod 2 11 will be inserted into the inside of the groove 2, thereby forming a closed ring with the hook 10, so that the hook 10 can be stably hung on the hanging point to prevent the hook 10 from falling off, and then pull the hand pull chain 4 to drive the ratchet inside the main body 1 to rotate, so as to drive the cable 5 to retract, so as to lift the goods. When it cannot be hung, the cable 5 at the end without the hook body 10 is wrapped around the outer wall of the goods, and the hand pull chain 4 is pulled in the opposite direction to retract the cable 5 to lift the goods.
[0024] Working principle: before use, hang the main body 1 at a high place through the hook 2. When the hook 2 is hung at a high place, first press the limit rod 3 inward to hang the hook 2 at a high place, and then release the limit rod 3. The limit rod 3 will be restored to its original position by the torsion spring. When the limit rod 3 is restored to its original position, the end of the limit rod 3 will be inserted into the inside of the groove 1, so that the hook 2 forms a closed ring, so that the hook 2 can be stably hung at a high place to prevent the hook 2 from falling off. When lifting is required, first observe whether the goods can be hung. When the goods can be hung, move the hook body 6 close to the hanging point, press the limit rod 2 11 inward, and hang the hook 10 on the hanging point. When the cargo is not able to be hung, the cable 5 at the end without the hook body 10 is wound around the outer wall of the cargo, and the hand chain 4 is pulled in the reverse direction to retract the cable 5, so that the cargo can be lifted or lowered.
[0025] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.
Claims
1. A hand chain hoist for lifting equipment, comprising a main body (1), a ratchet wheel rotatably mounted inside the main body (1), a hook (2) rotatably mounted on the top of the main body (1), a limit rod (3) rotatably mounted inside the hook (2), a torsion spring fixedly mounted at the rotation point, a groove (1) formed inside the top of the hook (2), an end of the limit rod (3) being insertable into the groove (1), characterized in that: The main body (1) is provided with a lifting device, and the lifting device can drive the cargo to move up and down; The lifting device comprises a hand chain (4), wherein the hand chain (4) is transmission-mounted inside the main body (1), and when the hand chain (4) rotates, it can drive the ratchet wheel inside the main body (1) to rotate; A cable (5) is provided inside the main body (1), two ends of the cable (5) are respectively fixedly mounted on the inner walls at both ends of the main body (1), and the middle of the cable (5) is rotatably mounted on a ratchet wheel; The cable (5) is provided with a hook body (6), the bottom end of which is rotatably mounted with a hook (10), a second limiting rod (11) is rotatably mounted inside the hook (10), a torsion spring is fixedly mounted at the rotating position, a second groove is provided inside the top end of the hook (10), and the end of the second limiting rod (11) can be inserted into the inside of the second groove.
2. A hand chain hoist for lifting equipment according to claim 1, characterized in that: A sliding groove (7) is provided inside the hook body (6), and the cable (5) is slidably installed inside the sliding groove (7).
3. A hand chain hoist for lifting equipment according to claim 2, characterized in that: A roller (8) is rotatably mounted inside the sliding groove (7), both ends of the roller (8) penetrate the outer wall of the hook body (6), and a limit block (9) is fixedly mounted on one end of the roller (8) that penetrates the hook body (6).