Double-machine double-hook chain hoist

Abstract

The utility model belongs to the technical field of hoisting equipment, and relates to a double-machine double-hook chain hoist, which comprises a main hoist, an auxiliary hoist, a main sports car and an auxiliary sports car, the main hoist and the auxiliary hoist are distributed left and right, the main hoist and the auxiliary hoist are driven by a lifting motor, and the lifting motor is in transmission connection with a main chain wheel shaft of the main hoist. The main chain wheel shaft is in transmission connection with one end of a connecting shaft through a main coupler, the other end of the connecting shaft is in transmission connection with an auxiliary chain wheel shaft through an auxiliary coupler, a main chain is wound on the main chain wheel shaft, the lower end of the main chain is connected with a main lifting hook, an auxiliary chain is wound on the auxiliary chain wheel shaft, and the lower end of the auxiliary chain is connected with an auxiliary lifting hook. The main sports car is driven by a running motor, and the main sports car and the auxiliary sports car are synchronously connected through a sports car plate. The double-machine double-hook chain hoist provided by the utility model adopts a double-machine structure, respectively drives one lifting hook to lift a heavy object, and has the advantages of simple structure, low equipment requirement, good synchronism and convenience in installation and debugging.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting equipment, and relates to a double-machine double-hook chain hoist. Background Technology

[0002] Electric chain hoists are increasingly widely used in the lifting industry due to their small size, simple structure, and accurate positioning. Traditional chain hoists have only one sprocket, which drives a single chain to move up and down, allowing only a single hook to lift heavy objects. When lifting large objects, the single-hook structure is insufficient, necessitating the use of double-hook chain hoists.

[0003] For example, Chinese utility model patent CN221521939U (publication date: August 13, 2024) discloses a low-headroom double-hook chain hoist, including a bracket, a trolley connected to the top of the bracket, and a double-hook chain electric hoist disposed below the bracket. The double-hook chain electric hoist is centrally located and includes a first sprocket and a second sprocket driven synchronously by a motor. A first chain and a second chain are respectively wound on the first sprocket and the second sprocket. A first lower hook and a second lower hook are disposed on both sides of the bottom of the bracket. The first chain is connected to the first lower hook through a first guide structure, and the second chain is connected to the second lower hook through a second guide structure.

[0004] The aforementioned equipment employs a single hoist structure, using a complex guiding system to simultaneously drive two hooks up and down to lift large and long objects. This type of equipment places high demands on the hoist, and the installation and debugging of the guiding system are also quite complex. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a double-machine double-hook chain hoist. It adopts a double-machine structure, with each machine driving a hook to lift heavy objects. It has the advantages of simple structure, low equipment requirements, good synchronization, and convenient installation and debugging.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0007] A double-machine, double-hook chain hoist includes a main hoist and an auxiliary hoist distributed on the left and right, and a main trolley and an auxiliary trolley distributed on the left and right. The main hoist and the auxiliary hoist are driven by a hoisting motor, which is connected to the main sprocket shaft of the main hoist. The main sprocket shaft is connected to one end of a connecting shaft via a main coupling, and the other end of the connecting shaft is connected to the auxiliary sprocket shaft via a secondary coupling. A main chain is wound on the main sprocket shaft, and a main hook is connected to the lower end of the main chain. An auxiliary chain is wound on the auxiliary sprocket shaft, and an auxiliary hook is connected to the lower end of the auxiliary chain. The main trolley is driven by a running motor, and the main trolley and the auxiliary trolley are connected synchronously via a trolley plate.

[0008] In the aforementioned double-machine double-hook chain hoist, the main hoist is located directly below the main trolley, the auxiliary hoist is located directly below the auxiliary trolley, the lifting motor is located on one side of the main hoist, and the running motor is located on one side of the main trolley.

[0009] In the aforementioned double-machine double-hook chain hoist, the main sprocket shaft is located inside the main gearbox, the auxiliary sprocket shaft is located inside the auxiliary gearbox, the hoisting motor is located outside the main gearbox, the main gearbox is provided with a main gearbox cover inside the main gearbox, the main gearbox cover is provided with a through hole for the connecting shaft to pass through, the auxiliary gearbox is provided with an auxiliary gearbox baffle inside the auxiliary gearbox, the auxiliary gearbox baffle is provided with a through hole for the connecting shaft to pass through, and the auxiliary gearbox is provided with an auxiliary gearbox cover outside the auxiliary gearbox.

[0010] In the aforementioned double-machine double-hook chain hoist, a running motor is installed on the front side of the main trolley and a main electrical control box is installed on the rear side, while a secondary electrical control box is installed on the rear side of the auxiliary trolley.

[0011] In the aforementioned double-machine double-hook chain hoist, the running motor is connected to the driving roller of the main trolley via gear transmission, the driven roller of the main trolley is driven by the driving roller, and the auxiliary trolley is driven by the main trolley.

[0012] In the aforementioned double-machine double-hook chain hoist, the carriage plate comprises two parallel and spaced-apart plates, which are connected as one unit by a number of connecting bolts, which are staggered vertically.

[0013] In the aforementioned double-machine double-hook chain hoist, the main hoist is suspended between the two plates of the carriage plate via a main lifting ring, and the auxiliary hoist is suspended between the two plates of the carriage plate via an auxiliary lifting ring. The main lifting ring and the auxiliary lifting ring are located at both ends of the carriage plate.

[0014] In the aforementioned double-machine double-hook chain hoist, the main trolley and the auxiliary trolley are respectively connected to the two ends of the trolley plate. The main trolley shaft of the main trolley passes through the two plates of the trolley plate in a vertical direction and is fastened to them. The auxiliary trolley shaft of the auxiliary trolley passes through the two plates of the trolley plate in a vertical direction and is fastened to them.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] This utility model provides a double-machine, double-hook chain hoist, employing a dual-machine structure with a main hoist and an auxiliary hoist. The main hoist serves as the overall lifting output, while the auxiliary hoist acts as the driven lifting device, maintaining synchronization with the main body. In this utility model, both ends of the connecting shaft are connected to the sprocket shafts of the main hoist and the auxiliary hoist respectively via couplings, achieving synchronization between the main and auxiliary hoists. The dual-machine structure can evenly distribute the load, reducing pressure on a single hook, while ensuring synchronous, stable, and safe lifting. Furthermore, this utility model utilizes a dual-car structure with a main trolley and an auxiliary trolley. The main trolley serves as the overall operating output, while the auxiliary trolley serves as the driven operating output, with a trolley plate ensuring synchronized operation of both trolleys. In summary, this utility model uses a drive motor and a reduction gearbox to drive the main sprocket, with the main and auxiliary sprockets connected by a transmission shaft. Synchronous rotation moves the lifted load up and down synchronously, offering advantages such as simple structure, low equipment requirements, good synchronization, and convenient installation and debugging. It is convenient, efficient, and applicable to a wider range of situations. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is the front view of this utility model;

[0019] Figure 3 This is a top view of the present invention;

[0020] Figure 4 This is a perspective view of the transmission structure of this utility model;

[0021] Reference numerals: 1. Main hoist; 2. Auxiliary hoist; 3. Main trolley; 4. Auxiliary trolley; 5. Lifting motor; 6. Main sprocket shaft; 7. Main coupling; 8. Connecting shaft; 9. Auxiliary coupling; 10. Auxiliary sprocket shaft; 11. Main chain; 12. Main hook; 13. Auxiliary chain; 14. Auxiliary hook; 15. Running motor; 16. Trolley plate; 17. Main gearbox; 18. Auxiliary gearbox; 19. Main gearbox cover; 20. Auxiliary gearbox baffle; 21. Auxiliary gearbox cover; 22. Connecting bolt; 23. Main lifting eye; 24. Auxiliary lifting eye; 25. Main trolley shaft; 26. Auxiliary trolley shaft. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 :

[0023] A double-machine, double-hook chain hoist includes a main hoist 1 and an auxiliary hoist 2 distributed on the left and right, and a main trolley 3 and an auxiliary trolley 4 distributed on the left and right. The main hoist 1 and the auxiliary hoist 2 are driven by a lifting motor 5. The lifting motor 5 is connected to the main sprocket shaft 6 of the main hoist 1. The main sprocket shaft 6 is connected to one end of a connecting shaft 8 via a main coupling 7. The other end of the connecting shaft 8 is connected to the auxiliary sprocket shaft 10 via a secondary coupling 9. A main chain 11 is wound on the main sprocket shaft 6, and a main hook 12 is connected to the lower end of the main chain 11. An auxiliary chain 13 is wound on the auxiliary sprocket shaft 10, and an auxiliary hook 14 is connected to the lower end of the auxiliary chain 13. The main trolley 3 is driven by a running motor 15. The main trolley 3 and the auxiliary trolley 4 are connected synchronously via a trolley plate 16.

[0024] In this embodiment, the two ends of the long, heavy object are respectively hung on the main hook 12 and the auxiliary hook 14. Then, the hoisting motor 5 is started, driving the main sprocket shaft 6 to rotate. The main sprocket shaft 6, through the transmission of the main coupling 7, the connecting shaft 8, and the auxiliary sprocket shaft 10, drives the auxiliary sprocket shaft 10 to rotate synchronously. When the main sprocket shaft 6 and the auxiliary sprocket shaft 10 rotate synchronously, they drive the main chain 11 and the auxiliary chain 13 to wind synchronously, thereby driving the main hook 12 and the auxiliary hook 14 to move synchronously, lifting the heavy object. Then, the running motor 15 is started, driving the main trolley 3 to move along the main beam. The auxiliary trolley 4 moves synchronously with it through the connection of the trolley plate 16, thereby driving the main hoist 1, the auxiliary hoist 2, and the heavy object to move. Through the above method, this embodiment achieves: a drive motor and a reduction gearbox drive the main sprocket, and the main and auxiliary sprockets are connected by a transmission shaft, rotating synchronously to move the lifted heavy object up and down synchronously.

[0025] The specific layout of this embodiment is as follows: the main hoist 1 is located directly below the main carriage 3, the auxiliary hoist 2 is located directly below the auxiliary carriage 4, the lifting motor 5 is located on one side of the main hoist 1, and the running motor 15 is located on one side of the main carriage 3.

[0026] Furthermore, to achieve better balance and make the equipment operate more stably, the main sprocket shaft 6 is installed inside the main gearbox 17, the secondary sprocket shaft 10 is installed inside the secondary gearbox 18, the lifting motor 5 is installed outside the main gearbox 17, the main gearbox 17 is provided with a main gearbox cover 19 on the inner side, the main gearbox cover 19 is provided with a through hole for the connecting shaft 8 to pass through, the secondary gearbox 18 is provided with a secondary gearbox baffle 20 on the inner side, the secondary gearbox baffle 20 is provided with a through hole for the connecting shaft 8 to pass through, and the secondary gearbox 18 is provided with a secondary gearbox cover 21 on the outer side.

[0027] Furthermore, the main carriage 3 is equipped with a running motor 15 at the front and a main electrical control box at the rear, while the auxiliary carriage 4 is equipped with an auxiliary electrical control box at the rear.

[0028] The drive structure of the sports car mechanism in this embodiment is as follows: the running motor 15 is connected to the driving roller of the main sports car 3 through gear transmission. The driven roller of the main sports car 3 is driven by the driving roller. The auxiliary sports car 4 is driven by the main sports car 3. After the running motor 15 is started, it drives the driving roller of the main sports car 3 to rotate through the gear, thereby driving the driven roller of the main sports car 3 and the roller of the auxiliary sports car 4 to rotate.

[0029] In this embodiment, the sports car plate 16 adopts a double plate structure. Specifically, the sports car plate 16 includes two plates that are parallel and spaced apart. The two plates are connected together by a number of connecting bolts 22. The connecting bolts 22 are staggered vertically, and the connecting bolts 22 ensure both the spacing between the plates and the stability of the connection.

[0030] The hoist installation structure in this embodiment is as follows: the main hoist 1 is suspended between the two plates of the carriage plate 16 by the main lifting ring 23, and the auxiliary hoist 2 is suspended between the two plates of the carriage plate 16 by the auxiliary lifting ring 24. The main lifting ring 23 and the auxiliary lifting ring 24 are located at both ends of the carriage plate 16.

[0031] The sports car mounting structure of this embodiment is as follows: the main sports car 3 and the auxiliary sports car 4 are respectively connected to the two ends of the sports car plate 16. The main sports car shaft 25 of the main sports car 3 passes through the two plates of the sports car plate 16 in a vertical direction and is fastened to them. The auxiliary sports car shaft 26 of the auxiliary sports car 4 passes through the two plates of the sports car plate 16 in a vertical direction and is fastened to them.

[0032] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A double machine double shackle chain hoist, characterized in that, The invention relates to a lifting device, which comprises left and right main hoist (1) and auxiliary hoist (2), left and right main trolley (3) and auxiliary trolley (4), the main hoist (1) and auxiliary hoist (2) are driven by lifting motor (5), the lifting motor (5) is in transmission connection with main sprocket shaft (6) of main hoist (1), the main sprocket shaft (6) is in transmission connection with one end of connecting shaft (8) through main coupling (7), the other end of connecting shaft (8) is in transmission connection with auxiliary sprocket shaft (10) through auxiliary coupling (9), the main sprocket shaft (6) is wound with main chain (11), the lower end of main chain (11) is connected with main hook (12), the auxiliary sprocket shaft (10) is wound with auxiliary chain (13), the lower end of auxiliary chain (13) is connected with auxiliary hook (14), the main trolley (3) is driven by running motor (15), the main trolley (3) and auxiliary trolley (4) are connected and synchronized through trolley plate (16).

2. A double machine double hook link chain hoist according to claim 1, characterized in that, The main hoist (1) is arranged directly below the main trolley (3), the auxiliary hoist (2) is arranged directly below the auxiliary trolley (4), the lifting motor (5) is arranged on one side of the main hoist (1), and the running motor (15) is arranged on one side of the main trolley (3).

3. A double machine double hook chain hoist according to claim 2, characterized in that, The main sprocket shaft (6) is arranged in the main gear box (17), the auxiliary sprocket shaft (10) is arranged in the auxiliary gear box (18), the lifting motor (5) is arranged outside the main gear box (17), the inside of the main gear box (17) is provided with main gear box cover (19), the main gear box cover (19) is provided with through hole for the connecting shaft (8), the inside of the auxiliary gear box (18) is provided with auxiliary gear box baffle (20), the auxiliary gear box baffle (20) is provided with through hole for the connecting shaft (8), and the outside of the auxiliary gear box (18) is provided with auxiliary gear box cover (21).

4. A double machine double hook link chain hoist according to claim 1, characterized in that, The trolley plate (16) comprises two plate bodies arranged in parallel and spaced apart, and the two plate bodies are connected into one body through a plurality of connecting bolts (22), and the connecting bolts (22) are arranged alternately up and down.

5. A double machine double hook link chain hoist according to claim 4, characterized in that, The main hoist (1) is hung between the two plate bodies of the trolley plate (16) through the main lifting ring (23), the auxiliary hoist (2) is hung between the two plate bodies of the trolley plate (16) through the auxiliary lifting ring (24), and the main lifting ring (23) and the auxiliary lifting ring (24) are located at the two ends of the trolley plate (16).

6. A double machine double hook link chain hoist according to claim 4, characterized in that, The main trolley (3) and the auxiliary trolley (4) are connected at the two ends of the trolley plate (16) respectively, the main trolley shaft (25) of the main trolley (3) penetrates the two plate bodies of the trolley plate (16) in the vertical direction and is fastened and connected therewith, and the auxiliary trolley shaft (26) of the auxiliary trolley (4) penetrates the two plate bodies of the trolley plate (16) in the vertical direction and is fastened and connected therewith.

Images