Chain-retracting lifting device

Abstract

The utility model discloses a chain contraction formula elevating gear, including crossbeam, two crossbeams are equipped with, and two crossbeam end portions are fixedly connected through the fixed plate, and the crossbeam below is equipped with the cross connecting rod, and the cross connecting rod below is equipped with the mounting bracket, and the mounting bracket is equipped with a plurality of matrix arrangement's sucking disc, and one end of two crossbeams is equipped with motor, and the motor output end has inserted transmission rod, and the transmission rod one end in the crossbeam location is equipped with first sprocket, and the crossbeam is below one end close to motor and is equipped with two chains, and the crossbeam between motor and chain location is equipped with two second sprocket, and the crossbeam is located motor and is away from second sprocket one side and is equipped with third sprocket, and the crossbeam lower end both sides are equipped with the fixed frame. This kind of elevating gear simple structure, the stability is good in the lifting process, can promote the object of different not size, has effectively improved the practicality of elevating gear.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a chain retractable lifting device. Background Technology

[0002] Lifting devices are widely used in industrial production and daily life for tasks such as cargo handling and equipment installation. Existing lifting devices are diverse, including hydraulic and electric screw jacks, but these devices suffer from complex structures, high maintenance costs, and poor lifting stability. While chain-driven lifting devices simplify the structure to some extent, chain swaying during lifting can lead to instability and make it difficult to meet the lifting needs of objects of different shapes and sizes. Therefore, we propose a chain-retractable lifting device. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a chain-driven retractable lifting device. This invention solves the problem that existing lifting devices, such as hydraulic lifting devices and electric screw lifting devices, suffer from complex structures, high maintenance costs, and poor lifting stability. While chain-driven lifting devices simplify the structure to some extent, they are prone to chain swaying during lifting, leading to instability of the lifted object and difficulty in meeting the lifting needs of objects of different shapes and sizes.

[0004] This utility model discloses a chain-retractable lifting device, comprising two crossbeams, the ends of which are fixedly connected by a fixing plate. A cross connecting rod is located below the cross connecting rod, and a mounting frame is located below the cross connecting rod. The mounting frame has multiple suction cups arranged in a matrix. A motor is located at one end of each crossbeam, and a transmission rod is inserted into the output end of the motor. A first sprocket is located at the inner end of the transmission rod within the crossbeam. Two chains are located below the end of the crossbeam near the motor. Two second sprockets are located between the motor and the chains. A third sprocket is located on the side of the crossbeam away from the second sprockets. Fixing frames are located on both sides of the lower end of the crossbeam. A fourth sprocket is located below the end of the crossbeam away from the third sprocket. Four fifth sprockets are arranged in a matrix on the mounting frame. A counterweight plate is located below the side of the crossbeam near the motor, and three sixth sprockets are arranged at equal intervals on the counterweight plate.

[0005] In the above scheme, one end of each of the two cross connecting rods is movably connected to the cross beam and the mounting bracket respectively via a pin. A roller is provided on the side of the cross connecting rod away from the pin. Both the cross beam and the mounting bracket are provided with U-shaped limiting plates that match the rollers.

[0006] In the above scheme, the two cross connecting rods are connected by a shaft drive at their middle parts.

[0007] In the above solution, the suction cup is equipped with a connector.

[0008] In the above scheme, anti-collision blocks are provided at both ends of the fixing plate.

[0009] The advantages and beneficial effects of this utility model are as follows: This utility model provides a chain-retractable lifting device. When the lifting device is lifting, the motor drives the transmission rod and the first sprocket to rotate. The first sprocket moves the chain, and the mounting frame can be lifted by the chain. At the same time, under the gravity of the counterweight plate, the chain on the side of the motor located on the second sprocket is automatically tensioned. When the lifting device is descending, the motor rotates in the opposite direction, and the mounting frame can automatically fall under its own weight. During the lifting process, one end of the cross connecting rod rotates around the crossbeam and the mounting frame through a pin, and the other end of the cross connecting rod rolls inside the U-shaped limiting plate through a roller. The cross connecting rod effectively improves the stability of the mounting frame lifting. Multiple suction cups are provided, and the lifting device can lift workpieces of different sizes through suction. This lifting device has a simple structure, good stability during lifting, and can lift objects of different sizes, effectively improving the practicality of the lifting device. Attached Figure Description

[0010] 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.

[0011] Figure 1 This is a schematic diagram of the structure of the present invention after storage;

[0012] Figure 2 This is a schematic diagram of the unfolded structure of this utility model;

[0013] Figure 3 This is the main view of the present invention after storage;

[0014] Figure 4 This is the unfolded main view of this utility model;

[0015] Figure 5 This is a schematic diagram of Part A of the present invention;

[0016] In the diagram: 1. Crossbeam; 2. Fixing plate; 3. Cross connecting rod; 4. Mounting bracket; 5. Suction cup; 6. Motor; 7. Transmission rod; 8. First sprocket; 9. Chain; 10. Second sprocket; 11. Third sprocket.

[0017] 12. Fixing frame; 13. Fourth sprocket; 14. Fifth sprocket; 15. Counterweight plate; 16. Sixth sprocket; 17. Pin shaft; 18. U-shaped limit plate; 19. Roller; 20. Connector; 21. Shaft; 22. Anti-collision block. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] like Figure 1-5 As shown, this utility model is a chain-retractable lifting device, including two crossbeams 1. The ends of the two crossbeams 1 are fixedly connected by a fixing plate 2. A cross connecting rod 3 is provided below the cross connecting rod 3, and a mounting frame 4 is provided below the cross connecting rod 3. The mounting frame 4 is provided with multiple suction cups 5 arranged in a matrix. The suction cups 5 are multiple, and the lifting device can lift and lower workpieces of different sizes by adsorption. A motor 6 is provided at one end of each of the two crossbeams 1, and the output end of the motor 6 is plugged into... A transmission rod 7 is provided, with both ends of the transmission rod 7 movably connected to a crossbeam 1. A first sprocket 8 is located at one end of the transmission rod 7 inside the crossbeam 1. Two chains 9 are located below the end of the crossbeam 1 near the motor 6, with one end of each chain 9 fixedly connected to the crossbeam 1. Two second sprockets 10 are located between the motor 6 and the chains 9 on the crossbeam 1. A third sprocket 11 is located on the side of the crossbeam 1 away from the second sprockets 10 from the motor 6. Fixing frames 12 are located on both sides of the lower end of the crossbeam 1, with the end of each chain 9 away from the motor 6 fixedly connected to the fixing frame 12. Next, a fourth sprocket 13 is provided below the end of the crossbeam 1 away from the third sprocket 11. Four fifth sprockets 14 are arranged in a matrix on the mounting bracket 4. A counterweight plate 15 is provided below the side of the crossbeam 1 closest to the motor 6. Three sixth sprockets 16 are arranged at equal intervals on the counterweight plate 15. Each crossbeam 1 has two chains 9. One chain 9 on the crossbeam 1 passes sequentially through the sixth sprocket 16, the second sprocket 10, the first sprocket 8, the third sprocket 11, and the fifth sprocket 14 closest to the motor 6. The side fixing bracket 12 is fixedly connected, and another chain 9 on the crossbeam 1 is fixedly connected to the fixing bracket 12 on the side away from the motor 6 in sequence through the sixth sprocket 16, the second sprocket 10, the first sprocket 8, the fourth sprocket 13, and the fifth sprocket 14 on the side away from the motor 6. When the motor 6 is working, the motor 6 drives the transmission rod 7 to rotate, and the transmission rod 7 drives the first sprocket 8 to rotate. When the first sprocket 8 rotates, the first sprocket 8 moves the chain 9. Through the transmission of the chain 9, the mounting bracket 4 can reciprocate in the vertical direction.

[0020] One end of each of the two cross connecting rods 3 is movably connected to the crossbeam 1 and the mounting frame 4 respectively via a pin 17. A roller 19 is provided on the side of the cross connecting rod 3 away from the pin 17. Both the crossbeam 1 and the mounting frame 4 are provided with U-shaped limiting plates 18 that match the rollers 19. The rollers 19 can roll inside the U-shaped limiting plates 18. Through the cooperation between the rollers 19 and the U-shaped limiting plates 18, the cross connecting rods 3 can rotate stably. When the mounting frame 4 is raised or lowered, one end of the cross connecting rod 3 rotates around the crossbeam 1 and the mounting frame 4 respectively via the pin 17, and the other end of the cross connecting rod 3 rolls inside the U-shaped limiting plates 18 via the rollers 19. The setting of the cross connecting rods 3 effectively improves the stability of the lifting and lowering of the mounting frame 4.

[0021] The two cross-shaped connecting rods 3 are connected by a shaft 21 at their midpoints.

[0022] The suction cup 5 is provided with a connector 20, which allows the suction cup 5 to be connected to a negative pressure adsorption device.

[0023] Anti-collision blocks 22 are provided at both ends of the fixed plate 2.

[0024] Specifically, in this utility model, one chain 9 on the crossbeam 1 is fixedly connected to the fixing frame 12 on the side near the motor 6 via the sixth sprocket 16, the second sprocket 10, the first sprocket 8, the third sprocket 11, and the fifth sprocket 14 on the side near the motor 6. Another chain 9 on the crossbeam 1 is fixedly connected to the fixing frame 12 on the side away from the motor 6 via the sixth sprocket 16, the second sprocket 10, the first sprocket 8, the fourth sprocket 13, and the fifth sprocket 14 on the side away from the motor 6. When the lifting device lifts, the motor 6 drives the transmission rod 7 and the first sprocket 8 to rotate. The first sprocket 8 moves the chain 9, and through the drive of the chain 9, the mounting frame 4 can be lifted. As the lifting device rises, the chain 9 of the motor 6 located on the side of the second sprocket 10 is automatically tensioned under the gravity of the counterweight plate 15. When the lifting device descends, the motor 6 rotates in the opposite direction. Under the gravity of the mounting frame 4, the mounting frame 4 can automatically fall. During the lifting process, one end of the cross connecting rod 3 rotates around the crossbeam 1 and the mounting frame 4 through the pin shaft 17, and the other end of the cross connecting rod 3 rolls inside the U-shaped limiting plate 18 through the roller 19. The setting of the cross connecting rod 3 effectively improves the stability of the lifting of the mounting frame 4. Multiple suction cups 5 are provided. Through the adsorption of the suction cups 5, the lifting device can lift workpieces of different sizes.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chain-retractable lifting device, comprising a crossbeam (1), characterized in that, Two crossbeams (1) are provided, and the ends of the two crossbeams (1) are fixedly connected by a fixing plate (2). A cross connecting rod (3) is provided below the cross connecting rod (3), and a mounting bracket (4) is provided below the cross connecting rod (3). Multiple suction cups (5) are arranged in a matrix on the mounting bracket (4). A motor (6) is provided at one end of each of the two crossbeams (1). A transmission rod (7) is inserted into the output end of the motor (6). A first sprocket (8) is provided at one end of the transmission rod (7) inside the crossbeam (1). Two chains (9) are provided below the end of the crossbeam (1) near the motor (6). Two second sprockets (10) are provided between the motor (6) and the chain (9). A third sprocket (11) is provided on the side of the crossbeam (1) away from the second sprockets (10). Fixing brackets (12) are provided on both sides of the lower end of the crossbeam (1). A fourth sprocket (13) is provided below the end of the crossbeam (1) away from the third sprocket (11). Four fifth sprockets (14) are arranged in a matrix on the mounting bracket (4). A counterweight plate (15) is provided below the side of the crossbeam (1) close to the motor (6). Three sixth sprockets (16) are arranged at equal intervals on the counterweight plate (15).

2. The chain-retractable lifting device according to claim 1, characterized in that, One end of each of the two cross connecting rods (3) is movably connected to the cross beam (1) and the mounting bracket (4) respectively via a pin (17). A roller (19) is provided on the side of the cross connecting rod (3) away from the pin (17). A U-shaped limiting plate (18) matching the roller (19) is provided on both the cross beam (1) and the mounting bracket (4).

3. The chain-retractable lifting device according to claim 1, characterized in that, The two cross connecting rods (3) are connected in the middle by a shaft (21).

4. The chain-retractable lifting device according to claim 1, characterized in that, The suction cup (5) is provided with a connector (20).

5. A chain-retractable lifting device according to claim 1, characterized in that, Anti-collision blocks (22) are provided at both ends of the fixing plate (2).

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