US 12,723,379 B2Granted

Stable connection system for fixing worn part of excavation equipment and assembly method thereof

AssigneeNingbo Heshun New Materials Co., Ltd.

InventorsMeikang Ren, Hui Li

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Abstract

A stable connection system for fixing a worn part of an excavation equipment and an assembly method thereof are provided, the connection system includes a worn part, a lip plate, a backrest component, and a rotating locking pin; a fitting part is provided on the backrest component or lip plate, the fitting part is provided with a second parallel thread; the rotating locking pin includes a connection portion providing with a first parallel thread on a lower and a taper portion on an upper; the rotating locking pin is provided between the backrest component and the lip plate, the connection portion and the fitting part are connected in an insertion manner and twisted in a thread manner; the rotating locking pin rotates and moves axially. The taper portion compresses the backrest component and the lip plate so as to fix the worn part on the lip plate.

Claims9

Dependent claims

A stable connection system for fixing a worn part of an excavation equipment, comprising:

a worn part, a lip plate body, a front-rest component, a backrest component, and a rotating locking pin;
the worn part is provided with a connection groove with a rear opening and a first hole extending up and down;
the lip plate body is provided with a second hole extending up and down, an axis direction of the second hole is the same as that of the first hole;
a front end of the lip plate body extends into the connection groove;
the second hole forms a hole portion in the first hole;
the front-rest component and the backrest component are provided in the hole portion and form a pin channel between the two;
the rotating locking pin comprises a connection portion providing with a first parallel thread and a taper portion with an outer diameter gradually decreasing from a top to a bottom;
a rear of the front-rest component is provided with a fitting part, which is provided with a second parallel thread;
the rotating locking pin is provided in the pin channel through the hole portion, the connection portion and the fitting part are connected in an insertion manner and twisted in a thread manner;
the rotating locking pin rotates and moves axially in the pin channel, the taper portion compresses the front-rest component and backrest component so that front-rest component abuts forward against the lip plate body and the backrest component abuts backward against the worn part, thereby fixing the worn part on the lip plate body,
wherein the fitting part is provided with a threaded hole with the second parallel thread;
the connection portion is a cylindrical component, the first parallel thread is provided on an outer circumferential surface of the cylindrical component, or
the fitting part is provided with a cylindrical component, the second parallel thread is provided on an outer circumferential surface of the cylindrical component, the connection portion is the threaded hole with the first parallel thread at a lower end of the rotating locking pin.

10 more elements

An assembly method of a stable connection system for fixing a worn part of an excavation equipment:

wherein an assemble object comprises a worn part, a lip plate, a backrest component, and a rotating locking pin;
the worn part is provided with a connection groove with a rear opening and a first installation hole extending up and down, the lip plate is provided with a second installation hole extending up and down;
the rotating locking pin comprises a connection portion provided with a first parallel thread at a lower side and a taper portion with an outer diameter gradually decreasing from a top to a bottom;
a fitting part is provided on the backrest component or the lip plate, the fitting part is provided with a fine-tuning component for adjusting a movement range;
the fine-tuning component is provided with a second parallel thread that matches the first parallel thread;
an outer circumference of the taper portion of the rotating locking pin is distributed with multiple strip-shaped concave grooves extending longitudinally, a protruding elastic locking buckle is provided on a front side of the backrest component;
an assembly step comprises:
step S1:
inserting a front end of the lip plate into the connection groove, placing the second installation hole in the first installation hole;
step S2:
the backrest component passing through the first installation hole and second installation hole, the backrest component being positioned at rear parts of the first installation hole and the second installation hole, a pin channel being formed between the backrest component and a hole wall of the second installation hole of the lip plate, the fitting part being positioned at a lower part of the pin channel;
step S3:
the rotating locking pin passing through the first installation hole and the second installation hole and being provided in the pin channel in a way that the connection portion is provided at a lower;
the connection portion and the fine-tunning component of the fitting part being adaptively inserted and twisted in a thread manner;
step S4:
the rotating locking pin rotating and moving axially, the taper portion compressing the backrest component and the lip plate due to an expansion of a taper, an elastic locking buckle entering a strip-shaped concave groove and switching between different strip-shaped concave grooves with a rotation of the elastic locking buckle;
the worn part being fixed on the lip plate.

14 more elements

Dependencies are inferred from the claim text.