Electric hoist with stable transmission efficiency

Abstract

The utility model discloses an electric hoist with stable transmission efficiency, and belongs to the field of electric hoists. The electric hoist with the stable transmission efficiency comprises a first connecting bottom plate, a connecting flange is arranged on the first connecting bottom plate, a motor is arranged on the connecting flange, the electric hoist further comprises a speed reducer, the speed reducer is arranged on one side of the first connecting bottom plate, and the motor is arranged on the speed reducer. A first fixing bottom plate is arranged at the end, away from the first connecting bottom plate, of the speed reducer. The electric hoist solves the problems that a lifting rope used by an existing electric hoist is generally a chain and only depends on the chain to lift heavy objects frequently and repeatedly for a long time, the chain can directly rub with a rotating roller on the electric hoist due to the fact that the surface of the chain is not provided with a sleeve layer, the surface of the chain is abraded, and the service life of the chain is prolonged. In addition, most of motors used by a traditional electric hoist are 220v and 320v, so that the cost of the electric hoist is also increased.

Description

Technical Field

[0001] The utility model relates to the field of electric hoists, and particularly relates to an electric hoist with stable transmission efficiency. Background Art

[0002] As is well known, an electric hoist is a device used to lift the height of heavy objects during the handling of heavy objects, and it is widely used in the field of lifting tools; the existing electric hoist includes an electric hoist body, a hook and a lifting rope are arranged at the output end of the electric hoist body, a connecting hole is arranged in the upper half area of the hook, and one end of the lifting rope passes through the connecting hole and is connected with the electric hoist body; when the existing electric hoist is in use, the hook is bent, and the user places the hanging end of the heavy object to be lifted inside the hook, and operates the electric hoist body to lift the heavy object to be lifted under the action of the lifting rope.

[0003] Chinese Patent with publication number CN208776240U discloses an electric hoist, which is difficult to fall off; convenient to rotate; including an electric hoist body, a hook and a lifting rope are arranged at the output end of the electric hoist body; also including a first gear, a second gear, a front connecting rod, a rear connecting rod, a rotating shaft, an upper fixing block, a lower fixing block, an upper baffle, a lower baffle, an upper snap ring, a lower snap ring, an upper bolt and a lower bolt, the front connecting rod and the rear connecting rod are respectively provided with a fifth fixing hole and a sixth fixing hole, and opposite tooth-shaped mechanisms are arranged on the outer side walls of the first gear and the second gear, and a seventh fixing hole and an eighth fixing hole are respectively arranged in the central areas of the first gear and the second gear; also including a pulley, a front fixing plate, a rear fixing plate, an upper pin and a lower pin, an annular groove is arranged on the outer side wall of the pulley, a first through hole is arranged in the central area of the pulley, and a second through hole and a third through hole are respectively arranged in the upper half areas of the front fixing plate and the rear fixing plate.

[0004] The lifting rope used in the electric hoist of the above patent is generally a chain, and only relies on the chain to lift heavy objects for a long time, frequently and repeatedly. Since there is no sheath on the surface of the chain, the chain will directly rub against the rotating roller on the electric hoist, causing wear on the surface of the chain, resulting in frequent replacement of the chain and increased costs. Moreover, most of the motors used in traditional electric hoists are 220v and 320v, which also increases the cost of the electric hoist. Content of the Utility Model

[0005] The purpose of the present utility model is to provide an electric hoist with stable transmission efficiency. By arranging an outer layer of steel wires on the surface of the aramid wear-resistant cloth, an inner layer of steel wires is arranged on the inner wall of the aramid wear-resistant cloth, and a chain is arranged in the inner layer of steel wires. During actual use, the arrangement of the outer layer of steel wires and the inner layer of steel wires not only increases the overall strength of the chain, enabling it to lift heavier objects without breaking, but also has the characteristic of anti-cutting. Moreover, the outer layer of steel wires and the aramid wear-resistant cloth isolate the chain from direct contact with the rotating roller, increasing the service life of the chain, thus solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions: An electric hoist with stable transmission efficiency, including a first connection bottom plate, a connection flange is arranged on the first connection bottom plate, a motor is arranged on the connection flange, and a speed reducer is further included. The speed reducer is arranged on one side of the first connection bottom plate. A first fixed bottom plate is arranged at one end of the speed reducer away from the first connection bottom plate. A rotating roller is arranged between the first connection bottom plate and the first fixed bottom plate. A chain is arranged on the rotating roller. An inner layer of steel wires is arranged on the outer surface of the chain, and an aramid wear-resistant cloth is arranged on the inner layer of steel wires.

[0007] Preferably, an outer layer of steel wires is arranged on the outer surface of the aramid wear-resistant cloth, and the outer layer of steel wires is woven and limitedly connected with the aramid wear-resistant cloth.

[0008] Preferably, a driven roller is arranged on the chain, and the driven roller is in contact with the chain.

[0009] Preferably, a second connection bottom plate is arranged on one side of the driven roller, and the second connection bottom plate is rotationally connected with the driven roller through a bearing.

[0010] Preferably, a second fixed bottom plate is arranged at one end of the driven roller away from the second connection bottom plate, and the second fixed bottom plate is rotationally connected with the driven roller through a bearing.

[0011] Preferably, a tensioning bolt is arranged on the second connection bottom plate at a position corresponding to the driven roller.

[0012] Preferably, a hook is arranged at the lower end of the second connection bottom plate.

[0013] Preferably, a fixing bolt is arranged on the first fixed bottom plate at a position corresponding to the rotating roller.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The utility model is provided with an outer layer of steel wires on the surface of the aramid wear-resistant cloth, and an inner layer of steel wires is arranged on the inner wall of the aramid wear-resistant cloth. And a chain is arranged in the inner layer of steel wires. During actual use, the arrangement of the outer layer of steel wires and the inner layer of steel wires not only increases the overall strength of the chain, enabling it to lift heavier objects without breaking, but also has the property of anti-cutting. The outer layer of steel wires and the aramid wear-resistant cloth isolate the chain from direct contact with the rotating roller, increasing the service life of the chain, effectively avoiding the problem that the lifting ropes used in existing electric hoists are generally chains and only rely on the chains to lift heavy objects frequently for a long time. Since there is no sheath layer on the surface of the chain, the chain will directly rub against the rotating roller on the electric hoist, causing wear on the surface of the chain, resulting in the need to frequently replace the chain, increasing the cost. And most of the motors used in traditional electric hoists are 220v and 320v, which also increases the cost of the electric hoist. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall external structure of the utility model;

[0017] Figure 2 is a schematic diagram of the overall front view structure of the utility model;

[0018] Figure 3 is a schematic diagram of the overall rear-end structure of the utility model;

[0019] Figure 4 is a schematic diagram of the aramid wear-resistant cloth structure of the utility model.

[0020] In the figure: 1. First connection bottom plate; 2. Connection flange; 3. Motor; 4. Reducer; 5. First fixed bottom plate; 6. Fixed bolt; 7. Rotating roller; 8. Aramid wear-resistant cloth; 9. Driven roller; 10. Second connection bottom plate; 11. Chain; 12. Second fixed bottom plate; 13. Tensioning bolt; 14. Hook; 15. Outer layer of steel wires; 16. Inner layer of steel wires. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] In order to solve the problem that in the prior art, the suspension ropes used by electric hoists are generally chains, and only rely on the chains to lift heavy objects frequently for a long time. Since there is no sheath layer on the surface of the chains, the chains will directly rub against the rotating rollers on the electric hoist, causing wear on the surface of the chains. As a result, the chains need to be frequently replaced, increasing the cost. In addition, most of the motors used in traditional electric hoists are 220v and 320v, which also increases the cost of the electric hoist. The present embodiment provides the following technical solutions:

[0023] An electric hoist with stable transmission efficiency, including a first connecting bottom plate 1, a connecting flange 2 is arranged on the first connecting bottom plate 1, a motor 3 is arranged on the connecting flange 2, and a speed reducer 4 is also included. The speed reducer 4 is arranged on one side of the first connecting bottom plate 1. A first fixing bottom plate 5 is arranged at the end of the speed reducer 4 away from the first connecting bottom plate 1. A rotating roller 7 is arranged between the first connecting bottom plate 1 and the first fixing bottom plate 5. A chain 11 is arranged on the rotating roller 7. An inner layer of steel wire 16 is arranged on the outer surface of the chain 11. An aramid wear-resistant cloth 8 is arranged on the inner layer of steel wire 16. An outer layer of steel wire 15 is arranged on the outer surface of the aramid wear-resistant cloth 8. The outer layer of steel wire 15 is woven and limitedly connected with the aramid wear-resistant cloth 8. A driven roller 9 is arranged on the chain 11. The driven roller 9 abuts against the chain 11. A second connecting bottom plate 10 is arranged on one side of the driven roller 9. The second connecting bottom plate 10 is rotationally connected to the driven roller 9 by a bearing. A second fixing bottom plate 12 is arranged at the end of the driven roller 9 away from the second connecting bottom plate 10. The second fixing bottom plate 12 is rotationally connected to the driven roller 9 by a bearing. A tensioning bolt 13 is arranged on the second connecting bottom plate 10 at a position corresponding to the driven roller 9. A hook 14 is arranged at the lower end of the second connecting bottom plate 10. A fixing bolt 6 is arranged on the first fixing bottom plate 5 at a position corresponding to the rotating roller 7;

[0024] In this embodiment, please refer to Figures 1-4 Figure, an outer layer of steel wire 15 is arranged on the surface of the aramid wear-resistant cloth 8, and an inner layer of steel wire 16 is arranged on the inner wall of the aramid wear-resistant cloth 8. And the chain 11 is arranged in the inner layer of steel wire 16. During actual use, the arrangement of the outer layer of steel wire 15 and the inner layer of steel wire 16 not only increases the overall strength of the chain 11, enabling it to lift heavier objects without breaking, but also has the characteristic of anti-cutting. The outer layer of steel wire 15 and the aramid wear-resistant cloth 8 isolate the direct contact between the chain 11 and the rotating roller 7, increasing the service life of the chain 11. Compared with the traditional electric hoist using an iron chain as a suspension rope, using the combination of the aramid wear-resistant cloth 8 and the chain 11 with a smaller diameter and weight as the suspension rope reduces the weight of the suspension rope, decreases the power consumption of the motor 3. In addition, the arrangement of the outer layer of steel wire 15 and the inner layer of steel wire 16 also enhances the strength of the suspension rope. The motor 3 also uses a low-power motor 3, reducing the manufacturing cost of the electric hoist compared with other electric hoists using 220v and 320v motors;

[0025] Working principle: An outer layer of steel wire 15 is provided on the surface of the aramid wear-resistant cloth 8, and an inner layer of steel wire 16 is provided on the inner wall of the aramid wear-resistant cloth 8. And a chain 11 is provided in the inner layer of steel wire 16. During actual use, the setting of the outer layer of steel wire 15 and the inner layer of steel wire 16 not only increases the overall strength of the chain 11 so that heavier objects can be lifted without breaking, but also has the property of anti-cutting. The outer layer of steel wire 15 and the aramid wear-resistant cloth 8 isolate the chain 11 from direct contact with the rotating roller 7, increasing the service life of the chain 11. And compared with the electric hoist that uses an iron chain as a lifting rope in the traditional way, using the combination of the aramid wear-resistant cloth 8 and the chain 11 with a smaller diameter and weight as the lifting rope reduces the weight of the lifting rope, reduces the power consumption of the motor 3, and the setting of the outer layer of steel wire 15 and the inner layer of steel wire 16 also enhances the strength of the lifting rope. And the motor 3 also uses a low-power motor 3, reducing the manufacturing cost of the electric hoist compared with other electric hoists that use 220v and 320v motors 3.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric hoist with stable transmission efficiency, comprising a first connecting bottom plate (1), a connecting flange (2) is arranged on the first connecting bottom plate (1), and a motor (3) is arranged on the connecting flange (2); It is characterized in that: It further comprises a speed reducer (4), the speed reducer (4) is arranged on one side of the first connecting bottom plate (1), a first fixed bottom plate (5) is arranged at one end of the speed reducer (4) far from the first connecting bottom plate (1), a rotating roller (7) is arranged between the first connecting bottom plate (1) and the first fixed bottom plate (5), a chain (11) is arranged on the rotating roller (7), an inner layer of steel wire (16) is arranged on the outer surface of the chain (11), and an aramid wear-resistant cloth (8) is arranged on the inner layer of steel wire (16).

2. The electric hoist with stable transmission efficiency according to claim 1, characterized in that: An outer layer of steel wire (15) is arranged on the outer surface of the aramid wear-resistant cloth (8), and the outer layer of steel wire (15) is woven and limitedly connected with the aramid wear-resistant cloth (8).

3. The electric hoist with stable transmission efficiency according to claim 2, characterized in that: A driven roller (9) is arranged on the chain (11), and the driven roller (9) abuts against the chain (11).

4. The electric hoist with stable transmission efficiency according to claim 3, characterized in that: A second connecting bottom plate (10) is arranged on one side of the driven roller (9), and the second connecting bottom plate (10) is rotationally connected with the driven roller (9) through a bearing.

5. The electric hoist with stable transmission efficiency according to claim 4, characterized in that: A second fixed bottom plate (12) is arranged at one end of the driven roller (9) far from the second connecting bottom plate (10), and the second fixed bottom plate (12) is rotationally connected with the driven roller (9) through a bearing.

6. The electric hoist with stable transmission efficiency according to claim 5, characterized in that: A tensioning bolt (13) is arranged on the second connecting bottom plate (10) at a position corresponding to the driven roller (9).

7. An electric hoist with stable transmission efficiency according to claim 6, characterized in that: A hook (14) is arranged at the lower end of the second connecting bottom plate (10).

8. The electric hoist with stable transmission efficiency according to claim 7, characterized in that: A fixing bolt (6) is arranged on the first fixed bottom plate (5) at a position corresponding to the rotating roller (7).

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