Double-chain balance lifting mechanism of electric hoist

Abstract

The utility model relates to an electric hoist double-chain balance lifting mechanism which comprises a cross beam and a lifting hook support, a motor support is arranged on the cross beam, a motor is installed on the motor support, two third chain wheels are arranged at the output end of the motor, each third chain wheel is provided with a lifting assembly, and the lifting assemblies are driven by the motor to lift the lifting hooks. The third chain wheel drives the two lifting assemblies to operate synchronously. According to the technology, tension of the first chain and the second chain is dynamically distributed through the cross beam, even if the first chain and the second chain have tiny length errors, the load level can be effectively kept, and load inclination is avoided; the symmetrical design of the first chain and the second chain can counteract the swing effect of the chain on the single side, so that the precision and stability of a lifted workpiece are improved, the workpiece is kept to ascend stably in the lifting process, the deviation phenomenon caused by uneven stress of the single chain is avoided, and the problems of inclination, shaking and single-point failure of a traditional single chain hoist are solved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology and relates to an electric hoist double-chain balanced lifting mechanism. Background Technology

[0002] Single-chain hoists are widely used in industrial production and construction, mainly for the vertical lifting of goods and equipment. However, these hoists have some significant problems in actual use. First, single-chain hoists are prone to tilting when lifting heavy objects. Second, single-chain hoists are prone to swaying during the lifting process. Finally, the force-bearing points of single-chain hoists may fail during operation. Once a component malfunctions, the entire lifting process may be interrupted, affecting production progress. Utility Model Content

[0003] The purpose of this utility model is to provide a double-chain balanced lifting mechanism for electric hoists, which can solve the problems mentioned in the background art.

[0004] According to the technical solution provided by this utility model: an electric hoist double-chain balanced lifting mechanism includes a crossbeam and a hook bracket. A motor bracket is provided on the crossbeam, and a motor is installed on the motor bracket. Two sprockets are provided on the output end of the motor. Each sprocket is provided with a lifting component. Under the drive of the motor, the sprockets drive the two lifting components to run synchronously.

[0005] Preferably, one of the lifting components includes a second sprocket and a second chain; the second sprocket is rotatably connected to the motor bracket via a first rotating shaft, the second chain is engaged on the second sprocket, and the other end of the second chain is engaged with one of the third sprockets.

[0006] Preferably, another lifting component includes a movable support, a sprocket four, and a chain one; the movable support is provided on the crossbeam, the sprocket four is rotatably connected to the movable support through a rotating shaft two, the chain one is engaged on the sprocket four, and the other end of the chain one is engaged with another sprocket three.

[0007] Preferably, one end of chain one and chain two are respectively provided with hooks, which lift the hook bracket during operation, so that the hook bracket moves upward synchronously.

[0008] Preferably, the other ends of chain one and chain two pass through sprocket three and are provided with a counterweight.

[0009] Preferably, the movable support and the crossbeam are slidably connected. The crossbeam is equipped with a cylinder one, the output end of which is connected to the movable support. The crossbeam is also equipped with a cylinder two, the output end of which is equipped with a push shaft that contacts the chain one.

[0010] The positive and progressive effects of this application are as follows:

[0011] The electric hoist double-chain balanced lifting mechanism provided in this embodiment of the invention has the following advantages:

[0012] 1. This technology dynamically distributes the tension of chain one and chain two through the crossbeam. Even if there are slight length errors between chain one and chain two, it can effectively maintain the load level and avoid load tilting. The symmetrical design of chain one and chain two can counteract the swaying effect of one side of the chain, thereby improving the accuracy and stability of the suspended workpiece. It allows the workpiece to rise steadily during the lifting process, avoiding the deviation caused by uneven force on a single chain, and solving the problems of tilting, swaying and single-point failure of traditional single-chain hoists. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 This is a top view of the present invention.

[0015] Figure 3 This is a schematic diagram of the hook of this utility model.

[0016] Figure 4 This is a partial perspective view of the present invention.

[0017] Figure 5 This is a schematic diagram of the installation of cylinder one, cylinder two, and push shaft of this utility model.

[0018] In the diagram: 1. Crossbeam; 2. Hook bracket; 3. Motor bracket; 31. Moving bracket; 4. Sprocket 1; 41. Sprocket 2; 42. Sprocket 3; 43. Chain 1; 5. Chain 2; 51. Hook; 52. Motor; 6. Counterweight; 61. Cylinder 1; 7. Cylinder 2; 71. Push shaft; 72. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] like Figure 1-5 As shown, this utility model is an electric hoist double-chain balanced lifting mechanism, including a crossbeam 1 and a hook bracket 2. A motor bracket 3 is provided on the crossbeam 1, and a motor 6 is installed on the motor bracket 3. Two sprockets 42 are provided on the output end of the motor 6. Each sprocket 42 is provided with a lifting component. Under the drive of the motor 6, the sprockets 42 drive the two lifting components to run synchronously.

[0022] This technology dynamically distributes the tension of chain 5 and chain 2 51 through the crossbeam 1. Even if there are slight length errors in chain 5 and chain 2 51, it can effectively maintain the load level and avoid load tilting. The symmetrical design of chain 5 and chain 2 51 can counteract the swaying effect of the chain on one side, thereby improving the accuracy and stability of the suspended workpiece. It allows the workpiece to rise steadily during the lifting process, avoiding the deviation caused by uneven force on the single chain, and solving the problems of tilting, swaying and single-point failure of traditional single-chain hoists.

[0023] One of the lifting components includes a second sprocket 41 and a second chain 51; the second sprocket 41 is rotatably connected to the motor bracket 3 through a rotating shaft, and the second chain 51 is meshed on the second sprocket 41, and the other end of the second chain 51 is meshed with one of the third sprockets 42.

[0024] Another lifting component includes a movable support 31, a sprocket 43, and a chain 5; the movable support 31 is provided on the crossbeam 1, the sprocket 43 is rotatably connected to the movable support 31 through a rotating shaft 2, the chain 5 is meshed on the sprocket 43, and the other end of the chain 5 is meshed with another sprocket 32.

[0025] One end of chain 5 and chain 51 is respectively provided with hook 52. When working, hook 52 lifts hook bracket 2, so that hook bracket 2 moves upward synchronously.

[0026] The other ends of chain 1 5 and chain 2 51 pass through sprocket 3 42 and are jointly provided with a counterweight 61.

[0027] By combining a symmetrically arranged double-chain system with the control of motor 6, the load can be lifted smoothly, synchronously, and evenly. Specifically, the double-chain system is installed in a symmetrical arrangement to ensure that the two chains, chain 1 5 and chain 2 51, operate synchronously during the load lifting process, avoiding load imbalance caused by skewness or asynchrony, and ensuring that the load is lifted smoothly without vibration. At the same time, the operating states of chain 1 5 and chain 2 51 tend to be consistent, thereby ensuring that the load is lifted smoothly, synchronously, and evenly.

[0028] In this embodiment, as Figure 5 As shown: The movable support 31 and the crossbeam 1 are slidably connected. The crossbeam 1 is equipped with a cylinder 7, and the output end of the cylinder 7 is connected to the movable support 31. The crossbeam 1 is also equipped with a cylinder 71, and the output end of the cylinder 71 is equipped with a push shaft 72, which is in contact with the chain 5.

[0029] By cooperating with cylinder 71 and cylinder 72, the distance between the left hook 52 and the right hook 52 can be adjusted to accommodate different hook brackets 2.

[0030] When it is necessary to adjust the spacing of hooks 52, the moving bracket 31 is driven by cylinder 7 to slide along the direction of the crossbeam 1 to adjust the spacing between the left hook 52 and the right hook 52; at the same time, cylinder 71 pushes the chain 5 downward through the push shaft 72 at its output end to ensure precise alignment between hooks, so that the hook bracket 2 can flexibly adapt to various working conditions and meet the application requirements of different hook brackets 2.

[0031] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A double-chain balancing lifting mechanism for an electric hoist, characterized in that, It includes a crossbeam (1) and a hook bracket (2). The crossbeam (1) is equipped with a motor bracket (3), and a motor (6) is installed on the motor bracket (3). The output end of the motor (6) is equipped with two sprockets (42). Each sprocket (42) is equipped with a lifting component. Under the drive of the motor (6), the sprockets (42) drive the two lifting components to run synchronously.

2. The electric hoist double-chain balancing lifting mechanism as described in claim 1, characterized in that: One of the lifting components includes a second sprocket (41) and a second chain (51); the second sprocket (41) is rotatably connected to the motor bracket (3) through a first rotating shaft, and the second chain (51) is meshed on the second sprocket (41), and the other end of the second chain (51) is meshed with one of the third sprockets (42).

3. The electric hoist double-chain balancing lifting mechanism as described in claim 2, characterized in that: Another lifting component includes a movable support (31), a fourth sprocket (43) and a first chain (5); the movable support (31) is provided on the crossbeam (1), the fourth sprocket (43) is rotatably connected to the movable support (31) through a second rotating shaft, the first chain (5) is meshed on the fourth sprocket (43), and the other end of the first chain (5) is meshed with another third sprocket (42).

4. The electric hoist double-chain balancing lifting mechanism as described in claim 3, characterized in that: One end of chain one (5) and chain two (51) are respectively provided with hooks (52). When working, the hooks (52) lift the hook bracket (2) so that the hook bracket (2) moves upward synchronously.

5. The electric hoist double-chain balancing lifting mechanism as described in claim 4, characterized in that: The other ends of chain one (5) and chain two (51) pass through sprocket three (42) and are equipped with a counterweight (61).

6. The electric hoist double-chain balancing lifting mechanism as described in claim 5, characterized in that: The movable support (31) and the crossbeam (1) are slidably connected. The crossbeam (1) is equipped with a cylinder (7), and the output end of the cylinder (7) is connected to the movable support (31). The crossbeam (1) is also equipped with a cylinder (71), and the output end of the cylinder (71) is equipped with a push shaft (72), which is in contact with the chain (5).

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