Unloading device and dynamic compaction machine

Abstract

The invention relates to an unloading device. The unloading device comprises a telescopic mechanism and a speed adjusting mechanism; the telescopic mechanism comprises a first portion and a second portion capable of stretching out and drawing back relative to the first portion; the second portion is connected to the speed adjusting mechanism; the speed adjusting mechanism adjusts resistance borne by the second portion during stretching out along with stretching out of the second portion; a dynamic compaction machine comprises a machine body, a lifting hook, a heavy hammer and the unloading device; the lifting hook, the heavy hammer and the unloading device are arranged on the machine body; the heavy hammer can be separated out of or hung on a lifting appliance of the unloading device. The unloading device adjusts the stretching-out resistance of the second portion through the speed adjusting mechanism, force for heavy hammer suspension by the second portion is gradually reduced, tension force of a steel wire rope for heavy hammer suspension can be gradually reduced, releasing of the heavy hammer is converted into slow putting down, and impact of the releasing of the heavy hammer to a system is reduced; meanwhile, the adjustment of resistance by the speed adjusting mechanism is automatic along with stretching out of the second portion, and a method is simple, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to an unloading device and a dynamic compaction machine. Background technique [0002] Dynamic tamping impact machines rely on the high-altitude release of heavy hammers, and use the kinetic energy of the heavy hammers to impact and compact the ground. In order to lift the weight of tens of tons to an altitude of tens of meters and release it suddenly, the existing dynamic compaction machine often uses a winch equipped with a mechanical uncoupling device to achieve this operation requirement. [0003] The mechanical uncoupling device uses the self-locking mechanism to lock the weight, and is lifted to a height of tens of meters by the lifting action of the hoist. The connecting rod of the mechanical uncoupling device is pulled by the wire rope to instantly change the stable state of the mechanism of the mechanical uncoupling device, thereby releasing the weight instant...

AI Technical Summary

Problems solved by technology

When this device is used, the tens of tons of heavy hammers are instantly disengaged from the lifting mechanism, and the potential energy stored in the hoist is released immediately, causing severe vibrations in the system. Under strong impact, the dynamic tamping machine is prone to violent rebound and backward tilting, and the hoisting wire ropes are disordered. Ropes, hooks hit the jib and other dangerous situations, and frequent violent impacts can easily cause structural fatigue

In addition, under the gravity of dozens of tons of heavy hammers, the tension required by the wire rope to pull the connecting rod of the mechanical uncoupling device cannot be ignored. This tension is also the factor that causes the hook to sway and hit the boom

[0004] There is a huge vertical upward impact force at the moment of unloading and the lateral pulling force of the pulling decoupler is a significant defect in the application of the current mechanical decoupler

Images