Engineering machinery and balance weight locking device

Abstract

The invention discloses a balance weight locking device for engineering machinery. The engineering machinery comprises a balance weight lifting base provided with a lift opening at the top; the balance weight locking device comprises a rocker arm (3) hinged on a rotary table (7) of the engineering machinery through a pin shaft (4); two end parts of the rocker arm (3) are respectively hinged with push rods (2); the tail ends of the two push rods (2) are respectively connected with locking components; and the rocker arm (3) rotates around the pin shaft (4) under the action of a power component to drive the two locking components to insert and separate from the lift opening. The invention also discloses the engineering machinery comprising the balance weight locking device. The engineering machinery and the balance weight locking device ensure that both sides of a balance weight are locked on the basis of reliably locking the balance weight.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a balancing weight locking device for construction machinery. In addition, the present invention also relates to a construction machine comprising the above-mentioned balance weight locking device. Background technique [0002] With the rapid development of my country's economic construction, the market demand for large-tonnage cranes is increasing. [0003] In the prior art, in order to ensure the stability of large-tonnage cranes when lifting heavy objects, a balance weight is generally installed on the crane; at the same time, in order to prevent the balance weight from sinking and ensure the safety of the crane when lifting heavy objects, a balance weight is also installed on the crane. Balance weight locking device. [0004] At present, the balance weight mechanical locking device is the most simple and reliable device for locking the balance weight. [000...

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the structure of the mechanical bolt-type locking device is very simple and can lock the balance weight well. However, when locking the balance weight, it is necessary to manually insert the horizontal locking pin 2' into the horizontal positioning hole 3' of the vertical plate 5' After completing the locking of the balance weight, when the balance weight is lowered, it is necessary to manually pull the horizontal locking pin 2' out of the horizontal positioning hole 3', which wastes a certain amount of manpower; There are horizontal locking pins 2' and vertical plates 5', so both the locking process and the unlocking process need to be manually operated on both sides, which is very inconvenient

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