Double-chain-wheel double-chain anti-falling metallurgical chain hoist

Abstract

The utility model belongs to the technical field of electric hoists, and relates to a double-chain-wheel double-chain anti-falling metallurgy chain hoist which comprises a motor, a first connecting box, a second connecting box and a gear box which are sequentially arranged, a motor shaft of the motor is in transmission connection with an output shaft, and the output shaft is in transmission connection with a chain wheel shaft through a gear assembly in the gear box. A first chain wheel arranged on the chain wheel shaft in a sleeving mode is arranged in the first connecting box, a second chain wheel arranged on the chain wheel shaft in a sleeving mode is arranged in the second connecting box, a first chain is assembled on the first chain wheel, and a second chain is assembled on the second chain wheel. The tail ends of the first chain and the second chain respectively extend into the lower lifting hook shell and are fixedly connected with the lower lifting hook shell, a lifting hook is arranged at the bottom of the lower lifting hook shell, and the first chain and the second chain are distributed left and right and are symmetrically arranged by taking the axis of the lifting hook as a symmetry axis. According to the double-chain-wheel double-chain anti-falling metallurgical chain hoist provided by the utility model, an electric hoist has better safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric hoists and relates to a double-sprocket double-chain anti-fall metallurgical chain hoist. Background Art

[0002] Electric hoists are increasingly used in various industries that require lifting due to their small size, simple structure, and accurate positioning. Different industries have different needs for electric hoists. In the metallurgical industry, due to the large lifting weight and high-temperature molten metal, the most important concern of users is the safety of electric hoists. During the lifting process, due to the strength and life limitations of the chain itself, or the impact of high-temperature molten metal splashing on the chain, there is a risk of chain breakage causing the hoisted object to fall, which can cause extremely serious safety accidents. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a double-sprocket double-chain anti-fall metallurgical chain hoist, so that the electric hoist has better safety.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0005] A double-sprocket double-chain anti-fall metallurgical chain hoist, including a sports car and an electric hoist, the electric hoist including a motor, a first connecting box, a second connecting box and a gear box arranged in sequence, the motor shaft of the motor is drivingly connected to the output shaft, the output shaft is drivingly connected to the sprocket shaft through a gear assembly in the gear box, the first connecting box is provided with a first sprocket sleeved on the sprocket shaft, the second connecting box is provided with a second sprocket sleeved on the sprocket shaft, the first sprocket is equipped with a first chain, the second sprocket is equipped with a second chain, the ends of the first chain and the second chain respectively extend into a lower hook shell and are fixedly connected thereto, a hook is provided at the bottom of the lower hook shell, the first chain and the second chain are distributed left and right and are symmetrically arranged with the hook axis as the symmetry axis, the motor drives the first sprocket and the second sprocket to rotate synchronously, and drives the first chain and the second chain to rise and fall synchronously.

[0006] In the above-mentioned double-sprocket double-chain anti-fall metallurgical chain hoist, a sprocket retaining ring is arranged between the first sprocket and the second sprocket.

[0007] In the above-mentioned double-sprocket double-chain anti-fall metallurgical chain hoist, a hoist body baffle is arranged below the electric hoist, the hoist body baffle covers the horizontal projection surface of the electric hoist, and the hoist body baffle is provided with a through slot for the first chain and the second chain to pass through. Further, a pair of brackets are arranged on the hoist body baffle, and the two ends of the electric hoist are respectively mounted on the brackets and fixedly connected to the brackets.

[0008] In the above-mentioned double-sprocket double-chain anti-fall metallurgical chain hoist, a lower baffle is arranged below the lower hook shell, and the lower baffle covers the horizontal projection surface of the first chain and the second chain on the hanging side. Further, the lower baffle is fixed to the bottom of the lower hook shell.

[0009] In the above-mentioned double-sprocket double-chain anti-fall metallurgical chain hoist, a chain barrel is fixed to the bottom of the hoist body baffle, and the chain barrel is located on one side of the lower hook shell, and the chain on the non-hanging side is stored in the chain barrel.

[0010] In the above-mentioned double-sprocket double-chain anti-fall metallurgical chain hoist, a motor bottom plate is arranged between the motor and the first connecting box, a connecting box bottom plate is arranged between the first connecting box and the second connecting box, and a gear box bottom plate is arranged between the second connecting box and the gear box.

[0011] In the above-mentioned double-sprocket double-chain anti-fall metallurgical chain hoist, the motor base plate, the connecting box base plate and the gear box base plate are provided with lifting ears, and a connecting rod is passed through the lifting ears. The sports car is connected to the electric hoist through a lifting ring, and the lifting ring includes a transverse connecting part and a pair of vertical connecting parts. The transverse connecting part is fixedly connected to the sports car axle of the sports car, and the vertical connecting part is fixedly connected to the connecting rod and corresponds to the first connecting box and the second connecting box respectively.

[0012] In the above-mentioned double-sprocket double-chain anti-fall metallurgical chain hoist, the sprocket shaft is a hollow shaft, the output shaft is inserted into the sprocket shaft and loosely matched with it, one end of the output shaft is connected to the motor shaft by a spline, and the other end is meshed with the helical gear for transmission, the helical gear is mounted on the gear shaft, the gear shaft is meshed with the output gear for transmission, the output gear is connected to the sprocket shaft by a spline, and the first sprocket and the second sprocket are connected to the sprocket shaft by a spline.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model provides a chain hoist specially used in the metallurgical industry, which is provided with a double-sprocket double-chain single hook structure, and the two chains are independently fixed on the lower hook shell. When working, the motor drives the two sprockets to rotate at the same time, and the two sprockets drive the two chains to move up and down at the same time. The two chains are lifted at the same time, with good strength and life and high safety. When one chain breaks, there is another chain to fix the lower hook shell, and the other chain can still work normally through the sprocket, and the hook will not fall, which plays a role in safety and anti-falling, greatly improving the safety of use.

[0015] 2. The utility model can prevent molten iron from splashing and protect the hoist motor and chain by arranging the hoist body baffle and the lower baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the transmission structure of the utility model;

[0019] Figure numerals: 1. sports car; 2. electric hoist; 3. motor; 4. first connecting box; 5. second connecting box; 6. gear box; 7. motor shaft; 8. output shaft; 9. sprocket shaft; 10. first sprocket; 11. second sprocket; 12. first chain; 13. second chain; 14. lower hook shell; 15. hook; 16. hoist body baffle; 17. lower baffle; 18. chain barrel; 19. motor bottom plate; 20. connecting box bottom plate; 21. gear box bottom plate; 22. lifting ear; 23. connecting rod; 24. lifting ring; 25. bevel gear; 26. gear shaft; 27. output gear. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings. Figure 1-3 :

[0021] A double-sprocket double-chain anti-fall metallurgical chain hoist, comprising a sports car 1 and an electric hoist 2, wherein the electric hoist 2 comprises a motor 3, a first connecting box 4, a second connecting box 5 and a gear box 6 arranged in sequence, wherein a motor shaft 7 of the motor 3 is transmission-connected to an output shaft 8, and the output shaft 8 is transmission-connected to a sprocket shaft 9 through a gear assembly in the gear box 6, wherein a first sprocket 10 sleeved on the sprocket shaft 9 is arranged in the first connecting box 4, and a second sprocket 11 sleeved on the sprocket shaft 9 is arranged in the second connecting box 5, wherein the first A first chain 12 is mounted on the sprocket 10, and a second chain 13 is mounted on the second sprocket 11. The ends of the first chain 12 and the second chain 13 extend into a lower hook shell 14 and are fixedly connected thereto. A hook 15 is disposed at the bottom of the lower hook shell 14. The first chain 12 and the second chain 13 are distributed left and right and are symmetrically disposed with the axis of the hook 15 as the axis of symmetry. The motor 3 drives the first sprocket 10 and the second sprocket 11 to rotate synchronously, and drives the first chain 12 and the second chain 13 to rise and fall synchronously.

[0022] Compare with Figure 1 and attached Figure 2When working, the motor 3 is started, the motor shaft 7 drives the output shaft 8 to rotate, and the output shaft 8 drives the sprocket shaft 9 to rotate after the reduction transmission of the gear assembly, and the first sprocket 10 and the second sprocket 11 mounted on the sprocket shaft 9 rotate synchronously, and the first sprocket 10 and the second sprocket 11 respectively drive the first chain 12 and the second chain 13 mounted on the first sprocket 10 and the second sprocket 11 to rise or fall synchronously, and the first chain 12 and the second chain 13 act on the lower hook shell 14 at the same time and drive it to rise or fall, thereby lifting the heavy object. After that, the sports car 1 drives the electric hoist 2 to run along the track. When one of the first chain 12 or the second chain 13 breaks, the other chain can still hold the heavy object, and the heavy object will not fall and cause a safety accident.

[0023] A sprocket retaining ring is provided between the first sprocket 10 and the second sprocket 11 , and the sprocket retaining ring can separate the first sprocket 10 and the second sprocket 11 and simultaneously perform axial positioning.

[0024] In order to better install each box, a motor bottom plate 19 is provided between the motor 3 and the first connection box 4 , a connection box bottom plate 20 is provided between the first connection box 4 and the second connection box 5 , and a gear box bottom plate 21 is provided between the second connection box 5 and the gear box 6 .

[0025] In this embodiment, the connection structure between the sports car 1 and the electric hoist 2 is: the motor bottom plate 19, the connection box bottom plate 20 and the gear box bottom plate 21 are provided with lifting ears 22, and the lifting ears 22 are provided with connecting rods 23, and the sports car 1 and the electric hoist 2 are connected through a lifting ring 24, and the lifting ring 24 includes a transverse connecting part and a pair of vertical connecting parts, the transverse connecting part is fixedly connected to the sports car axle of the sports car 1, and the vertical connecting part is fixedly connected to the connecting rod 23 and corresponds to the first connecting box 4 and the second connecting box 5 respectively. By setting a connection structure corresponding to the double sprocket, this embodiment can make the operation of the sports car 1 and the electric hoist 2 more stable.

[0026] Compare with Figure 3 The driving structure of this embodiment is as follows: the sprocket shaft 9 is a hollow shaft, the output shaft 8 is inserted into the sprocket shaft 9 and is loosely matched therewith, one end of the output shaft 8 is splined to the motor shaft 7, and the other end is meshed with the bevel gear 25 for transmission, the bevel gear 25 is sleeved on the gear shaft 26, the gear shaft 26 is meshed with the output gear 27 for transmission, the output gear 27 is splined to the sprocket shaft 9, and the first sprocket 10 and the second sprocket 11 are splined to the sprocket shaft 9. This embodiment adopts a primary reduction transmission structure from the output shaft 8 to the bevel gear 25 and a secondary reduction transmission structure from the gear shaft 26 to the output gear 27.

[0027] To further improve safety and prevent molten iron splashing:

[0028] A hoist body baffle 16 is provided below the electric hoist 2, and the hoist body baffle 16 covers the horizontal projection surface of the electric hoist 2. The hoist body baffle 16 is provided with a through slot for the first chain 12 and the second chain 13 to pass through, and the hoist body baffle 16 can prevent molten iron from splashing onto the electric hoist 2 and affecting the normal operation of the motor 3. Further, a pair of brackets are provided on the hoist body baffle 16, and the two ends of the electric hoist 2 are respectively mounted on the brackets and fixedly connected to the brackets.

[0029] A lower baffle plate 17 is provided below the lower hook housing 14, and the lower baffle plate 17 covers the horizontal projection plane of the first chain 12 and the second chain 13 on the hanging side, and the lower baffle plate 17 can prevent the molten iron from splashing onto the chain and affecting the strength of the chain. Further, the lower baffle plate 17 is fixed to the bottom of the lower hook housing 14.

[0030] A chain barrel 18 is fixed to the bottom of the hoist body baffle 16 . The chain barrel 18 is located on one side of the lower hook housing 14 , and the chain on the non-hanging side is stored in the chain barrel 18 .

[0031] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-sprocket double-chain anti-fall metallurgical chain hoist, comprising a sports car (1) and an electric hoist (2), characterized in that: The electric hoist (2) comprises a motor (3), a first connection box (4), a second connection box (5) and a gear box (6) which are arranged in sequence; the motor shaft (7) of the motor (3) is transmission-connected to an output shaft (8); the output shaft (8) is transmission-connected to a sprocket shaft (9) via a gear assembly in the gear box (6); a first sprocket (10) sleeved on the sprocket shaft (9) is arranged in the first connection box (4); a second sprocket (11) sleeved on the sprocket shaft (9) is arranged in the second connection box (5); a first chain ( 12), a second chain (13) is mounted on the second sprocket (11), the ends of the first chain (12) and the second chain (13) respectively extend into a lower hook shell (14) and are fixedly connected thereto, a hook (15) is arranged at the bottom of the lower hook shell (14), the first chain (12) and the second chain (13) are distributed on the left and right and are symmetrically arranged with the axis of the hook (15) as the symmetry axis, the motor (3) drives the first sprocket (10) and the second sprocket (11) to rotate synchronously, and drives the first chain (12) and the second chain (13) to rise and fall synchronously.

2. A double-sprocket double-chain anti-fall metallurgical chain hoist according to claim 1, characterized in that: A hoist body baffle (16) is arranged below the electric hoist (2), the hoist body baffle (16) covers the horizontal projection surface of the electric hoist (2), and the hoist body baffle (16) is provided with a through groove for the first chain (12) and the second chain (13) to pass through.

3. A double-sprocket double-chain anti-fall metallurgical chain hoist according to claim 2, characterized in that: A lower baffle plate (17) is provided below the lower hook shell (14), and the lower baffle plate (17) covers the horizontal projection plane of the first chain (12) and the second chain (13) on the hanging side.

4. A double-sprocket double-chain anti-fall metallurgical chain hoist according to claim 2, characterized in that: A chain barrel (18) is fixed to the bottom of the hoist body baffle (16), and the chain barrel (18) is located on one side of the lower hook shell (14), and the chain on the non-hanging side is stored in the chain barrel (18).

5. The double-sprocket double-chain anti-fall metallurgical chain hoist according to claim 1, characterized in that: A motor bottom plate (19) is provided between the motor (3) and the first connection box (4), a connection box bottom plate (20) is provided between the first connection box (4) and the second connection box (5), and a gear box bottom plate (21) is provided between the second connection box (5) and the gear box (6).

6. A double-sprocket double-chain anti-fall metallurgical chain hoist according to claim 5, characterized in that: The motor bottom plate (19), the connection box bottom plate (20) and the gear box bottom plate (21) are provided with lifting ears (22), and a connecting rod (23) is inserted into the lifting ears (22). The sports car (1) and the electric hoist (2) are connected via a lifting ring (24), and the lifting ring (24) includes a transverse connecting part and a pair of vertical connecting parts. The transverse connecting part is fixedly connected to the sports car axle of the sports car (1), and the vertical connecting part is fixedly connected to the connecting rod (23) and corresponds to the first connection box (4) and the second connection box (5) respectively.

7. The double-sprocket double-chain anti-fall metallurgical chain hoist according to claim 1, characterized in that: The sprocket shaft (9) is a hollow shaft. The output shaft (8) is inserted into the sprocket shaft (9) and is loosely matched therewith. One end of the output shaft (8) is connected to the motor shaft (7) via a spline, and the other end is meshed with a helical gear (25) for transmission. The helical gear (25) is sleeved on a gear shaft (26). The gear shaft (26) is meshed with an output gear (27) for transmission. The output gear (27) is connected to the sprocket shaft (9) via a spline. The first sprocket (10) and the second sprocket (11) are connected to the sprocket shaft (9) via a spline.

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