Engine speed limiting device, vehicle with same and lifting device

Abstract

The invention provides an engine speed limiting device, an automobile having the same, and a lifting device, comprising a blocking structure and a driving structure. Before the gear pump of the engine-driven lifting device is used to operate, the blocking structure is driven by the driving structure, so that the blocking structure is driven. In the first position, at this time, the blocking structure blocks the throttle valve of the engine so that it cannot be fully opened, thereby reducing the speed of the engine, thereby making the speed of the engine match the speed of the gear pump, and then starting the engine to drive the gear pump. Work to make the gear pump run at its nominal speed or the highest allowable speed, thus protecting the gear pump well. When there is no need to use the engine to drive the gear pump, the opening range of the throttle valve is adjusted by driving the blocking structure again through the driving structure, so that the throttle valve can be fully opened and the engine can work normally.

Description

technical field [0001] The invention relates to an engine speed limiting device, an automobile with the same and a lifting device, especially suitable for gasoline engine speed limiting, and belongs to the technical field of speed limiting devices. Background technique [0002] For the convenience of unloading, many small trucks now install a lifting device at the bottom of the cargo compartment used for loading. The bottom surface becomes a slope, and the cargo falls down from the slope under the action of its own gravity, thereby improving the unloading efficiency. [0003] The commonly used lifting device is a lifting oil cylinder. When unloading is required, the operator pushes the lifting handle to open the oil outlet of the reversing valve assembly. The hydraulic oil flows from the hydraulic oil tank into the gear pump, and the gear pump pressurizes the hydraulic oil The hydraulic oil is input into the lifting cylinder, and the pressurized hydraulic oil pushes the lif...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the gasoline engine in the prior art whose rotating speed is far greater than that of the gear pump, so that the gear pump often operates at a state higher than its maximum allowable rotating speed when driven by the engine, thus Easily damaged technical defects, so as to provide an engine speed limiting device that can reduce the gasoline engine speed and make the gear pump run below its nominal speed or the maximum allowable speed, thus protecting the gear pump from damage

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