Chain-jamming-preventing protection electric hoist capable of automatically oiling and lubricating

Abstract

The invention discloses a chain-jamming-preventing protection electric hoist capable of automatically oiling and lubricating. The chain-jamming-preventing protection electric hoist comprises a machineshell, a chain and a power source which is arranged in the machine shell and used for driving the chain to circularly enter and exit. The machine shell is provided with a chain inlet and a chain outlet which allow the chain to circularly enter and exit. An installation plate is installed on the outer wall of one side of the machine shell and provided with two connecting ends which are connected with a chain-jamming-preventing protection device and an oiling device respectively. The chain-jamming-preventing protection device is located below the machine shell. The chain can enter the chain inlet after smoothly passing through the chain-jamming-preventing protection device in advance. The chain-jamming-preventing protection device is provided with a limiting switch. The oiling device is located on the side portion of the machine shell and connected with an oil conveying pipe. One end, not connected with the oiling device, of the oil conveying pipe is inserted into the chain-jamming-preventing protection device and oils the chain-jamming-preventing protection device, and therefore the chain passing through the chain-jamming-preventing protection device is oiled and lubricated. According to the chain-jamming-preventing protection electric hoist, the chain is oiled, the surface smoothness of a chain ring is improved, and the probability of chain knotting is reduced; and meanwhile,for chain knotting, the chain knotting part is blocked outside the machine shell.

Description

technical field [0001] The invention relates to an electric hoist, in particular to an automatic lubricating anti-jamming chain protection electric hoist. Background technique [0002] Electric hoist is a kind of special lifting equipment, which is installed on the crane and gantry crane. The electric hoist has the characteristics of small size, light weight, simple operation and convenient use. When the electric hoist is lifting heavy objects, the chain often gets stuck, which affects the lifting of the heavy objects and affects the work. Therefore, an anti-jamming chain structure is set on the electric hoist to prevent the chain from knotting during use. For example, Publication No. CN108821148A discloses an anti-jamming chain upside-down side-out chain electric hoist, including a casing and a chain, a middle piece is provided in the middle of the casing, a vertical slot is provided above the middle piece, and a vertical slot is arranged in the vertical slot. There is an ...

AI Technical Summary

Problems solved by technology

[0003] This anti-jamming chain structure has defects: through the cooperation of the middle piece, the chain entry piece and the chain exit piece, there can be an arc-shaped transition section when the chain goes out of the chain, and the chain groove and the protrusion on the sprocket are used in the bumps. The point drives the chain to rotate to prevent the chain from getting stuck. This structure can only be used for the chain that passes through the place, and there is no guarantee for the chain that has not passed through. Especially during the lifting process, the items have weight and the lifting height is high, so workers cannot provide Auxiliary, because of the inertia brought by the item, the chain is knotted before it enters the place, so it cannot play a comprehensive anti-jamming effect

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