Engineering vehicle door hinge and manufacturing process thereof

Abstract

The invention discloses an engineering vehicle door hinge and a manufacturing process thereof. The hinge has the advantages of being reliable in structural strength and good in abrasion resistance. According to the main points of the technical scheme, the hinge comprises a first hinge piece, a second hinge piece and a rotating shaft, wherein first movable sleeves are arranged on one side of the first hinge piece, second movable sleeves are arranged on one side of the second hinge piece, the first movable sleeves and the second movable sleeves are all arranged on the rotating shaft and rotationally connected, an oil hole is formed in one end of the rotating shaft, an oil nozzle communicating with the oil hole is formed in the rotating shaft, a plurality of strip-shaped oil grooves are formed in the peripheral wall of the rotating shaft, the oil grooves are annularly distributed at equal intervals, oil guide holes communicating with the oil hole are formed in the bottoms of the oil grooves, sealing sleeves and steel rings are arranged in the oil grooves, the steel rings are arranged on the inner sides of the sealing sleeves, and the sealing sleeves are fixed in the oil grooves through the steel rings. The hinge and the method are suitable for the technical field of hinges.

Description

technical field [0001] The invention belongs to the technical field of hinges, in particular to an engineering vehicle door hinge and a manufacturing process thereof. Background technique [0002] The hinge is an important joint of the engineering car door. The hinge is usually composed of two hinge pieces and a rotating shaft. The hinge needs to be rotated frequently and needs to bear a certain force. Over time, the hinge is easy to be damaged or it is laborious to open and makes a harsh sound. , in the existing hinges, there is also a way to reduce wear by opening an oil groove on the surface of the rotating shaft and filling it with lubricant, but in actual use, the lubricant is easy to leak out, and the service life is short, which is not ideal, and the existing hinges are usually It is formed by electric welding of iron sheets, or by casting, resulting in insufficient structural strength. Therefore, this design adopts forging and improves on the traditional forging proc...

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Problems solved by technology

[0002] The hinge is an important joint of engineering car doors. The hinge is usually composed of two hinge pieces and a rotating shaft. The hinge needs to be rotated frequently and needs to bear a certain force. Over time, the hinge is easy to be damaged or it is laborious to open and makes a harsh sound. , in the existing hinges, there is also a way to reduce wear by opening an oil groove on the surface of the rotating shaft and filling it with lubricant, but in actual use, the lubricant is easy to leak out, and the service life is short, which is not ideal, and the existing hinges are usually It is welded by iron sheet, or formed by casting, resulting in insufficient structural strength, so this design adopts forging and improves on the traditional forging process

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