Automatic balance lifting chain block

Abstract

The utility model discloses an automatic balancing lifting chain block, which relates to the technical field of chain blocks and comprises a shell, a lifting chain and a hand zipper are mounted in the shell in a meshed manner, a telescopic rod is fixedly mounted at the bottom end of the shell, a mounting frame is fixedly mounted at the bottom end of the telescopic rod, and a chain wheel is rotatably mounted in the mounting frame. The chain wheel is meshed with the hand zipper, a first crank is fixedly installed at one end of a rotating shaft of the chain wheel, a threaded rod is rotatably installed at the bottom end of the shell, a worm gear is fixedly installed at the top end of the threaded rod, a threaded sleeve is fixedly installed on the back of the installation frame, and the threaded rod is inserted into the threaded sleeve in a threaded mode. The chain wheel drives the hand zipper to rotate and is matched with a series of transmission assemblies to complete cargo lifting, so that a traditional mode that the chain is pulled by hands is replaced, the palm is prevented from making direct contact with the hand zipper, the palm of a user is protected, time and labor are saved, and efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of manual chain hoist technology, specifically to an automatic balancing lifting manual chain hoist. Background Technology

[0002] A hand chain hoist is a simple and portable manual lifting tool. There are two main types: traditional hand chain hoists and limited-load hand chain hoists. Traditional hand chain hoists use a chain pull to rotate a handwheel, which in turn drives a long shaft, which in turn rotates the lifting assembly. This, in turn, lifts the load via the lifting chain. Limited-load hand chain hoists are safer than ordinary hand chain hoists because they have a load-limiting function. They are operated by manually pulling the chain, which rotates the handwheel, which in turn rotates the load-limiting assembly, which then drives the lifting chain. The shaft rotates, and the long shaft drives the lifting assembly to rotate, thereby lifting the goods by means of the lifting chain. When the lifting weight is overloaded, the power transmission between the hand chain wheel and the long shaft is disengaged by the load limiting component, and lifting cannot be achieved. Existing automatic balancing hand chain hoists use built-in balancing devices and sensors to sense the position and weight distribution of the load. When the load is unbalanced, the balancing device will automatically adjust the length or angle of the chain to restore the load to balance. This adjustment process is automatic and does not require manual intervention, thereby improving the safety and efficiency of lifting.

[0003] Chinese invention patent CN201420477522.6 discloses a chain-type hand chain hoist, comprising a housing 1 and a housing 2, with a long shaft disposed between the housing 1 and housing 2. One end of the long shaft is inside the housing 1, and the other end is inside the housing 2. A hand chain wheel, a brake seat, and a lifting sprocket are sequentially mounted on the long shaft. A bearing 1 is disposed between the lifting sprocket and housing 1, a bearing 2 is disposed between the lifting sprocket and the long shaft, a bearing 3 is disposed between the lifting sprocket and housing 2, and a bearing 4 is disposed between the long shaft and housing 2. This hand chain hoist of the patent completes the lifting of goods by pulling the chain in conjunction with a series of transmission components. However, when pulling the chain by hand, the chain rubs against the palm, causing discomfort to the palm, and is time-consuming, labor-intensive, and inefficient. To address the above problems, the inventor proposed an automatic balancing lifting hand chain hoist to solve the aforementioned issues. Utility Model Content

[0004] In order to solve the problem that existing hand chain hoists lift goods by pulling a chain in conjunction with a series of transmission components, but the chain rubs against the palm when pulled by hand, causing discomfort to the palm, and is time-consuming, labor-intensive and inefficient; the purpose of this utility model is to provide an automatic balancing lifting hand chain hoist.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an automatic balancing lifting hand chain hoist, including a housing, a lifting chain and a hand chain being meshed and installed inside the housing, a telescopic rod being fixedly installed at the bottom end of the housing, an installation frame being fixedly installed at the bottom end of the telescopic rod, a sprocket being rotatably installed inside the installation frame, and the sprocket meshing with the hand chain, and a first crank handle being fixedly installed at one end of the sprocket's shaft.

[0006] Preferably, a threaded rod is rotatably mounted on the bottom end of the housing, a worm gear is fixedly mounted on the top end of the threaded rod, a threaded sleeve is fixedly mounted on the back of the mounting frame, and the threaded rod is threadedly inserted into the threaded sleeve.

[0007] Preferably, a worm is fixedly installed at the bottom end of the housing, and the worm meshes with a worm wheel, and a second crank is fixedly installed at one end of the worm.

[0008] Preferably, baffles are hinged to both sides of the mounting frame, and bolts are inserted through both baffles. The bolts can be threaded into the mounting frame. A hook is fixedly installed at the top of the housing, and a lifting hook is fixedly installed at one end of the lifting chain.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. In this utility model, the first crank can be used to drive the sprocket to rotate, the sprocket drives the hand zipper to rotate, and a series of transmission components are used to complete the lifting of goods, thereby replacing the traditional method of pulling the chain by hand, avoiding direct contact between the palm and the hand zipper, which not only protects the user's palm, but also saves time and effort and is highly efficient.

[0011] 2. In this utility model, the second crank can be used to drive the worm gear to rotate according to the different user heights. The worm gear drives the worm wheel to rotate, the worm wheel drives the threaded rod to rotate, and the threaded rod drives the threaded sleeve and the mounting frame to be raised and lowered for adjustment, which greatly improves the applicability of the device. Attached Figure Description

[0012] 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;

[0015] Figure 3This is a schematic diagram of the cross-sectional structure of the mounting frame of this utility model;

[0016] Figure 4 This is a schematic diagram of the overall bottom view of the present invention;

[0017] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Housing; 2. Lifting chain; 3. Hand chain; 4. Hook; 5. Lifting hook; 6. Mounting frame; 7. First crank handle; 8. Telescopic rod; 9. Baffle; 10. Bolt; 11. Sprocket; 12. Threaded sleeve; 13. Threaded rod; 14. Worm gear; 15. Worm; 16. Second crank handle. Detailed Implementation

[0019] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Figure 1-5 As shown, this utility model provides an automatic balancing hand chain hoist, including a housing 1. A lifting chain 2 and a hand chain 3 are meshed and installed inside the housing 1. A series of transmission components are installed inside the housing 1. The hand chain hoist is existing technology. (The specific working principle is that the operator pulls the hand chain 3 to rotate the hand chain wheel, which in turn rotates the long shaft. The head gear of the long shaft rotates the sprocket, which in turn rotates the short shaft. The short shaft rotates the bore gear, which in turn rotates the lifting chain wheel. The lifting chain wheel then lifts the lifting chain, thereby lifting the goods. This is from a comparative case.) The automatic balancing hand chain hoist uses a built-in balancing device and sensors to sense the position and weight distribution of the load. When the load becomes unbalanced, the balancing device automatically adjusts the chain length. The device automatically adjusts the weight to a certain degree or angle to restore balance. This adjustment process is automatic and requires no manual intervention, thus improving the safety and efficiency of lifting. A telescopic rod 8 is fixedly installed at the bottom of the housing 1. The telescopic rod 8 is a multi-stage telescopic rod. A mounting frame 6 is fixedly installed at the bottom of the telescopic rod 8. A sprocket 11 is rotatably installed inside the mounting frame 6, and the sprocket 11 meshes with the hand zipper 3. A first crank 7 is fixedly installed at one end of the shaft of the sprocket 11. When using this device, the first crank 7 can be used to drive the sprocket 11 to rotate, and the sprocket 11 drives the hand zipper 3 to rotate. Together with a series of transmission components, the device completes the lifting of goods, thus replacing the traditional method of manually pulling the chain. This avoids direct contact between the palm and the hand zipper 3, protecting the user's palm and saving time, effort, and efficiency.

[0021] A threaded rod 13 is rotatably mounted on the bottom end of the housing 1, and a worm gear 14 is fixedly mounted on the top end of the threaded rod 13.

[0022] By adopting the above technical solution, the worm gear 14 can drive the threaded rod 13 to rotate according to the different user's height.

[0023] A threaded sleeve 12 is fixedly installed on the back of the mounting frame 6, and the threaded rod 13 is threadedly inserted into the threaded sleeve 12.

[0024] By adopting the above technical solution, the threaded rod 13 drives the threaded sleeve 12 and the mounting frame 6 to rise and fall and adjust.

[0025] A worm gear 15 is fixedly installed at the bottom of the housing 1, and the worm gear 15 meshes with the worm wheel 14. A second crank handle 16 is fixedly installed at one end of the worm gear 15.

[0026] By adopting the above technical solution, the second crank 16 drives the worm 15 to rotate, and the worm 15 drives the worm wheel 14 to rotate.

[0027] Both sides of the mounting frame 6 are hinged with baffles 9, and bolts 10 are inserted through both baffles 6, and the bolts 10 can be threaded into the mounting frame 6.

[0028] By adopting the above technical solution, opening the baffle 9 can disengage the zipper 3 from the sprocket 11, making it easier to adjust the height of the mounting frame 9. After adjustment, manually engage the zipper 3 onto the sprocket 11, close the baffle 9, and fix it with bolts 10. The baffle 9 ensures that the zipper 3 is always engaged with the sprocket 11 during use, preventing the zipper 3 from disengaging from the sprocket 11.

[0029] A hook 4 is fixedly installed at the top of the housing 1, and a lifting hook 5 is fixedly installed at one end of the lifting chain 2.

[0030] By adopting the above technical solution, the device is hung in a designated position using hook 4, and goods are hung using hook 5.

[0031] Working Principle: When using this device, first hang it in the designated position using hook 4. Then, according to the user's desired height, open the baffle 9 and manually disengage the hand chain 3 from the sprocket 11. Use the second crank 16 to rotate the worm gear 15, which in turn rotates the worm wheel 14. The worm wheel 14 then rotates the threaded rod 13, which in turn adjusts the threaded sleeve 12 and the mounting frame 6. The telescopic rod 8 extends and retracts along with the mounting frame 6, and it can be limited by the mounting frame 6 to prevent... The mounting frame 6 rotates with the threaded rod 13. After adjustment, manually engage the hand zipper 3 onto the sprocket 11 and close the baffle 9. Secure it with bolts 10, then hang the goods on the hook 5. Use the first crank 7 to drive the sprocket 11 to rotate, which in turn drives the hand zipper 3 to rotate. This, along with a series of transmission components, completes the lifting of the goods, thus replacing the traditional method of manually pulling the chain. This avoids direct contact between the palm and the hand zipper 3, protecting the user's hands and saving time, effort, and efficiency.

[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An automatically counterbalanced lifting hoist chain block comprising a housing (1), characterized in that: The shell (1) is provided with a lifting chain (2) and a hand chain (3) installed in engagement, the bottom end of the shell (1) is fixedly provided with an extension rod (8), the bottom end of the extension rod (8) is fixedly provided with a mounting frame (6), the mounting frame (6) is rotatably provided with a sprocket (11), the sprocket (11) is engaged with the hand chain (3), and one end of the rotating shaft of the sprocket (11) is fixedly provided with a first rocking handle (7).

2. An automatic balancing hoist hand operated lever hoist as claimed in claim 1 wherein, The bottom end of the shell (1) is rotatably provided with a threaded rod (13), and the top end of the threaded rod (13) is fixedly provided with a worm wheel (14).

3. An automatic balancing hoist hand operated lever hoist as claimed in claim 1 wherein, The back of the mounting frame (6) is fixedly provided with a threaded sleeve (12), and the threaded rod (13) is threadedly inserted into the threaded sleeve (12).

4. An automatic balancing hoist hand operated lever hoist as claimed in claim 1 wherein, The bottom end of the shell (1) is fixedly provided with a worm (15), and the worm (15) is engaged with the worm wheel (14).

5. An automatically balancing lifting hand chain hoist according to claim 4, characterized in that One end of the worm (15) is fixedly provided with a second rocking handle (16).

6. An automatic balancing hoist hand operated lever hoist as claimed in claim 1, characterized in that, The mounting frame (6) is hingedly provided with a baffle (9) on both sides.

7. An automatically balancing lifting hand chain hoist according to claim 6, characterized in that Bolts (10) are inserted through the two baffles (9), and the bolts (10) can be threadedly inserted into the mounting frame (6).

8. An automatic balancing hoist hand operated lever hoist as claimed in claim 1 wherein, The top end of the shell (1) is fixedly provided with a hook (4), and one end of the lifting chain (2) is fixedly provided with a lifting hook (5).

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