Gearless mini lever block
By designing the repair window and sponge layer lubrication system in the hand-wire hoist, the problem of rust and inconvenient maintenance of the hand-wire hoist chain is solved, achieving a longer service life and lower maintenance costs.
Patent Information
- Application Number
- CN202420556063.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-21
AI Technical Summary
When used in harsh environments, the chain is prone to rust and inconvenient maintenance, resulting in wear and shortening of the service life of the parts.
A gearless mini hand hoist is designed, and a maintenance window consisting of a cover plate, connecting block, fixing block, lock block and threaded hole is designed to facilitate external repair and inspection. At the same time, by setting a sponge layer and filling port in the shell, lubricating oil is added to lubricate the chain to prevent rust.
It realizes maintenance and lubrication without disassembling the hand-wrench hoist, extends the service life of the chain, and reduces the maintenance and use costs.
Smart Images
Figure CN222593330U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lever hoists, in particular to a gearless mini lever hoist. Background Art
[0002] The lever hoist is a manual lifting tool that is simple to use and easy to carry. The lever hoist can be used for lifting, pulling, lowering and calibrating. The lifting capacity generally does not exceed 50 tons. It is widely used in equipment installation, object lifting, machine pulling, etc. in shipbuilding, electricity, transportation, construction, mining, post and telecommunications and other industries. The lever hoist is safe, reliable, durable, new and better, and small in size. The lever hoist is a clamp that uses the principle of lever to obtain a linear traction force matching the load by manually pulling the handle, and acts on the load in the movement in rotation to drive the load to run.
[0003] During the use of the lever hoist, due to the harsh environment and heavy load, the internal parts of the lever hoist will suffer from wear, damage and other faults after long-term use. It is inconvenient to repair it. The entire lever hoist needs to be disassembled and the internal parts need to be repaired. Secondly, the lever hoist is used in some dark and humid environments. The chain of the hoist is easily rusted due to repeated use and contact with humid air, which will have a great impact on the strength and service life of the chain. In addition, rust residue will enter the interior of the lever hoist and affect the operation of the internal parts. Therefore, a gearless mini lever hoist is proposed to address the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a gearless mini lever hoist to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A gearless mini lever hoist comprises a fixed shell, the top of the fixed shell is fixedly connected to a top hook, the outer side of the fixed shell is rotatably connected to a hand rod, a chain is provided between the two fixed shells, one end of the chain is fixedly connected to a hook, the outer side of the fixed shell is fixedly connected to a C-shaped fixed block, the fixed block is fixedly connected to a straight shaft inside, the outer side of the straight shaft is rotatably connected to a connecting block, one side of the connecting block is fixedly connected to a cover plate, the cover plate is fixedly connected to a locking block on a side away from the connecting block, a circular hole penetrating the locking block is provided on the outer side of the locking block, a sealing ring is fixedly connected to one side of the cover plate, a threaded hole is provided on the outer side of the fixed shell, an annular groove is provided on the outer side of the fixed shell, the bottom end of the fixed shell is fixedly connected to a shell, a sponge layer is provided inside the shell, a chain outlet penetrating the shell is provided at the bottom end of the shell, a filling port is provided on the outer side of the shell near the top, and a filling pipe is fixedly connected to the outer side of the filling port.
[0007] Preferably, the diameter of the cover plate is larger than the diameter of the maintenance opening on the fixed shell.
[0008] Preferably, the thickness of the sealing ring is smaller than the width of the annular groove, and the sealing ring fits tightly inside the annular groove.
[0009] Preferably, there are two chain outlets, which are symmetrically arranged at the bottom of the shell.
[0010] Preferably, there are two filling ports, which are symmetrically arranged on the outside of the shell.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. In the utility model, a maintenance window can be opened on the outside of the lever hoist by providing a cover plate, a connecting block, a fixing block, a locking block and a threaded hole. When the lever hoist needs to be repaired or inspected, the cover plate can be opened, and then the parts inside the lever hoist can be repaired, replaced and inspected. During maintenance, the lever hoist does not need to be disassembled as a whole, which reduces the difficulty of maintenance and reduces the maintenance time;
[0013] 2. In the utility model, the chain can be lubricated by the shell, sponge layer, chain outlet, filling port and filling pipe. When the use environment is harsh, the surface of the chain will not rust after lubrication. Moreover, the chain will reduce the damage to the inside of the hand hoist after lubrication, thereby increasing the service life of the chain and reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;
[0016] Figure 3 This is a schematic diagram of the cover structure of the utility model;
[0017] Figure 4 This is a schematic diagram of the annular groove structure position of the utility model.
[0018] In the figure: 1. fixed shell; 2. top hook; 3. hand lever; 4. chain; 5. hook; 6. fixed block; 7. straight shaft; 8. cover plate; 9. connecting block; 10. locking block; 11. round hole; 12. sealing ring; 13. shell; 14. sponge layer; 15. chain outlet; 16. filling port; 17. filling pipe; 18. threaded hole; 19. annular groove. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.
[0022] See also Figure 1-4 , the utility model provides a technical solution:
[0023] A gearless mini lever hoist comprises a fixed shell 1, a top hook 2 is fixedly connected to the top of the fixed shell 1, a hand lever 3 is rotatably connected to the outer side of the fixed shell 1, a chain 4 is arranged between the two fixed shells 1, a hook 5 is fixedly connected to one end of the chain 4, a C-shaped fixed block 6 is fixedly connected to the outer side of the fixed shell 1, a straight shaft 7 is fixedly connected to the inside of the fixed block 6, a connecting block 9 is rotatably connected to the outer side of the straight shaft 7, a cover plate 8 is fixedly connected to one side of the connecting block 9, a locking block 10 is fixedly connected to the side of the cover plate 8 away from the connecting block 9, a circular hole 11 penetrating the locking block 10 is arranged on the outer side of the locking block 10, a sealing ring 12 is fixedly connected to one side of the cover plate 8, a threaded hole 18 is arranged on the outer side of the fixed shell 1, an annular groove 19 is arranged on the outer side of the fixed shell 1, a shell 13 is fixedly connected to the bottom end of the fixed shell 1, a sponge layer 14 is arranged inside the shell 13, a chain outlet 15 penetrating the shell 13 is arranged at the bottom end of the shell 13, a filling port 16 is arranged on the outer side of the shell 13 near the top, and a filling pipe 17 is fixedly connected to the outer side of the filling port 16.
[0024] The diameter of the cover plate 8 is larger than the diameter of the maintenance port on the fixed shell 1; the thickness of the sealing ring 12 is smaller than the width of the annular groove 19, and the sealing ring 12 fits tightly inside the annular groove 19; there are two chain outlets 15, which are symmetrically arranged at the bottom of the shell 13; there are two filling ports 16, which are symmetrically arranged on the outside of the shell 13.
[0025] Working process: When the device is used, the top hook 2 on the top of the lever hoist is first hung in a suitable position, and fixed shells 1 are provided on both sides of the lever hoist. The hand lever 3 rotates on the outside of the fixed shell 1, and the chain 4 passes through the inside of the lever hoist. A hook 5 is fixedly connected to one end of the chain 4. When it is necessary to lift an object, after the top hook 2 is hung in a suitable position, the hand lever 3 is pulled to release the chain 4, and the hook 5 at one end of the chain 4 is hung on the hanging place of the object to be lifted. Then the hand lever 3 is pulled to lift the object. A fixed block 6 is fixedly connected to the outside of the fixed shell 1, and a straight shaft 7 is fixed to the outside of the fixed block 6. The cover plate 8 rotates on the outside of the straight shaft 7 through the connecting block 9. An annular groove 19 is provided on the outside of the fixed shell 1, and a sealing member 16 is fixedly connected to one side of the cover plate 8. Sealing ring 12, when the cover plate 8 is closed, the sealing ring 12 will be embedded in the annular groove 19 and fit tightly in the annular groove 19 to form a seal for the inside of the hand lever hoist, which can prevent external dust from entering the inside of the hand lever hoist and affecting the operation of the internal parts. A locking block 10 is fixedly connected to the side of the cover plate 8 away from the connecting block 9. A circular hole 11 is provided on the locking block 10. When the cover plate 8 is closed, the locking block 10 will be pressed on the outside of the threaded hole 18, and the circular hole 11 and the threaded hole 18 will be in a concentric state. The cover plate 8 can be fixed to the outside of the fixed shell 1 by bolts. The bolts pass through the circular hole 11 and the threaded hole 18 for threaded connection, so that the cover plate 8 can be firmly fixed to the outside of the fixed shell 1. When the hand lever hoist needs to be repaired or inspected, the bolts are tightened. The bolt is taken out from the threaded hole 18, the cover plate 8 can be turned around the straight axis 7 at a certain angle, and then the internal parts of the hand-operated hoist can be repaired and inspected. When the cover plate 8 is fixed to the outside of the fixed shell 1, the sealing ring 12 will fit in the annular groove 19. When the cover plate 8 is opened, the sealing ring 12 will separate from the annular groove 19 and move with the cover plate 8. A shell 13 is also provided at the bottom end of the fixed shell 1. A sponge layer 14 is provided inside the shell 13. The chain 4 passes through the sponge layer 14 and passes through the chain outlet 15 at the bottom of the shell 13. During the use of the hand-operated hoist, since the chain 4 passes through the sponge layer 14, the lubricating oil absorbed in the sponge layer 14 will lubricate the chain 4. The chain 4 lubricated with the lubricating oil will not rust, and When it contacts with other parts in the lever hoist, the friction can be reduced, and the excess lubricating oil can also lubricate the other parts it contacts. A filling port 16 is provided on the outside of the shell 13, and a filling pipe 17 is fixed on the outside of the filling port 16. When the lubricating oil in the sponge layer 14 is insufficient, the lubricating oil can be added to the sponge layer 14 through the filling pipe 17. Through the multiple filling pipes 17 on the outside of the shell 13, the lubricating oil can be added to different parts of the sponge layer 14 from multiple directions, so that the sponge layer 14 can continuously lubricate the chain 4 to maintain the lubrication effect. The chain 4 lubricated by the sponge layer 14 is not easy to rust, and the friction with other parts can be reduced, the service life of the chain 4 is increased, and the use cost and maintenance cost of the lever hoist are reduced.
[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A gearless mini lever hoist, comprising a fixed housing (1), characterized in that: The top of the fixed shell (1) is fixedly connected to a top hook (2), the outer side of the fixed shell (1) is rotatably connected to a hand lever (3), a chain (4) is provided between the two fixed shells (1), one end of the chain (4) is fixedly connected to a hook (5), the outer side of the fixed shell (1) is fixedly connected to a C-shaped fixed block (6), the interior of the fixed block (6) is fixedly connected to a straight shaft (7), the outer side of the straight shaft (7) is rotatably connected to a connecting block (9), one side of the connecting block (9) is fixedly connected to a cover plate (8), the side of the cover plate (8) away from the connecting block (9) is fixedly connected to a locking block (10), the locking block ( A circular hole (11) penetrating the locking block (10) is provided on the outer side of the cover plate (8), a sealing ring (12) is fixedly connected to one side of the cover plate (8), a threaded hole (18) is provided on the outer side of the fixed shell (1), an annular groove (19) is provided on the outer side of the fixed shell (1), a shell (13) is fixedly connected to the bottom end of the fixed shell (1), a sponge layer (14) is provided inside the shell (13), a chain outlet (15) penetrating the shell (13) is provided at the bottom end of the shell (13), a filling port (16) is provided on the outer side of the shell (13) near the top, and a filling pipe (17) is fixedly connected to the outer side of the filling port (16).
2. The gearless mini lever hoist according to claim 1, characterized in that: The diameter of the cover plate (8) is greater than the diameter of the maintenance opening on the fixed shell (1).
3. The gearless mini lever hoist according to claim 1, characterized in that: The thickness of the sealing ring (12) is smaller than the width of the annular groove (19), and the sealing ring (12) fits tightly inside the annular groove (19).
4. The gearless mini lever hoist according to claim 1, characterized in that: There are two chain outlets (15) which are symmetrically arranged at the bottom of the housing (13).
5. The gearless mini lever hoist according to claim 1, characterized in that: The number of the filling ports (16) is two, and they are arranged symmetrically on the outside of the housing (13).