Fixing device and engineering machine

Abstract

An embodiment of the invention provides a fixing device and an engineering machine, and relates to the field of engineering machinery. The fixing device comprises a connecting piece, a first fixing part, a second fixing part and a third fixing part. A first connecting portion and a second connecting portion are arranged at the two opposite ends of the connecting piece. The first fixing part is connected with the first connecting portion and used for fixing the first connecting portion. The second fixing part is connected with the third fixing part and used for fixing the third fixing part. Thesecond connecting portion stretches into the second fixing part and is connected with the third fixing part. The third fixing part is used for fixing the second connecting portion. The connecting piece is used for being connected with a first assembly part. At least one of the first fixing part and the second fixing part is used for being connected with a second assembly part. By the adoption ofthe fixing device and the engineering machine, the fixing quality of the connection position can be guaranteed, the fixing stability is guaranteed advantageously, and therefore the service life and the reliability are guaranteed, and the usage safety is guaranteed.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a fixing device and construction machinery. Background technique [0002] Existing engineering mechanical equipment, such as grabs and excavators, are connected to the lug and the grab through a pin, the pin is connected to the lug, and the grab can rotate relative to the pin and the lug. Current grabbers, excavators, etc. have adopted the anti-rotation bellcrank connection or the combination of the limit block and the lug plate to limit the axial movement and radial rotation of the pin shaft. However, in actual work, the screws at the position of the baffle or the limit block are often broken by the cargo during grabbing or digging operations, or due to long-term mechanical vibration, the screws are loosened and then sheared, resulting in the failure of the pin shaft. Axial movement and radial rotation, work failure. Contents of the invention [0003] The purpose of the...

AI Technical Summary

Problems solved by technology

However, in actual work, the screws at the position of the baffle or the limit block are often broken by the cargo during grabbing or digging operations, or due to long-term mechanical vibration, the screws are loosened and then sheared, resulting in the failure of the pin shaft. Axial movement and radial rotation, work failure

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