Power supply equipment and construction machinery with load and release device

Abstract

The invention discloses power supply equipment of a loaded lowering device and engineering machinery, which are used for reducing the generation of phenomenon of involving a power supply cable into a hanging hook, prolonging the service life of the engineering machinery and improving the use safety of the engineering machinery. The power supply equipment comprises a first contact device connected with a control module of the loaded lowering device for controlling a weight to unhook and capable of being lifted along with the loaded lowering device, and a second contact device suspended on an engineering machinery bracket, positioned at the outer side of the first contact device, connected with a power supply, used for connecting with the first contact device to realize the power supply of the loaded lowering device when the first contact device is lifted to a set height along with the loaded lowering device, and used for disconnecting from the first contact device to realize the power failure of the loaded lowering device when the first contact device is lifted to other heights along with the loaded lowering device.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a power supply device with a load lowering device and an engineering machinery. Background technique [0002] Loading and lowering devices are widely used in the construction of industrial and civil buildings, warehouses, yards, docks, airports, roads and railway subgrades, etc. The basic principle is to lift heavy objects to a certain height, and then pass The free fall realizes the hammering on the ground. [0003] The on-load unloading device is equipped with electrical equipment to control the decoupling of the heavy object. After the heavy object is lifted to a certain height, it needs to be energized through the electrical equipment to realize the decoupling of the heavy object. Such as figure 1 as shown, figure 1 It is a schematic structural diagram of a construction machine with a load-discharging device in the prior art. In the prior art, an external lon...

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Problems solved by technology

like figure 1 as shown, figure 1 It is a schematic structural diagram of a construction machine with a load-discharging device in the prior art. In the prior art, an external long cable 01 is usually used to input electric energy and control signals to the electrical equipment 02. When the construction machinery of the device is in operation, the heavy object 03 is unhooked and falls, and the hook of the loading and unloading device will rebound violently with the boom due to inertia and hit the boom frame, and the cable may be involved in the hook and break the risk

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