CN210128051U

CN210128051U - Firm gear connecting structure

Info

Publication number: CN210128051U
Application number: CN201822172247.8U
Authority: CN
Inventors: 周华; 周爱鹏; 张仁勇; 陈建华; 于利龙; 刘向东; 周金珠; 郑海燕
Original assignee: YANCHENG JINGANGXING GEAR FACTORY
Current assignee: YANCHENG JINGANGXING GEAR FACTORY
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2020-03-06
Anticipated expiration: 2028-12-24

Abstract

A robust gear connection structure comprising: gear, main shaft and key, the gear body includes: tooth, tooth shoulder, centre shaft hole and first keyway, the second keyway has been seted up to main shaft department, and the cross sectional shape of key is the same with the alignment rectangle cross sectional shape of first keyway second keyway, and first keyway and second keyway are filled to the key, and the terminal surface of key is equipped with one to three screw, and every screw all is equipped with interference fit's screw in.

Description

Firm gear connecting structure

Technical Field

The utility model relates to a gear manufacturing correlation technique field especially relates to a closely firm gear connection structure.

Background

Gears are indispensable key components of any mechanical transmission and reduction machinery. The strength, the fit tolerance, the assembly precision and the like of the device have higher requirements. The existing connection between the gear and the main shaft generally adopts a key and a key groove to connect, and the main shaft and a central shaft hole of the gear are assembled and connected through the key and the key groove. This connection is still deficient in that, since a perfect dimensional fit is not possible during machining, cumulative tolerances can form between the gear, the spindle and the key, which not only affect the stability of the gear during the gear transmission, but also have a certain effect on the life of the gear and the spindle. May cause the gear to loosen.

The construction of side gears or long neck gears requires the connection of the half shaft or long neck to the gear, and the connection of the gear to the drive shaft, all requiring extremely high connection robustness and reliability. The applicant adopts the anti-loosening sheet arranged in the central shaft hole of the gear, so that the connection between the main shaft and the gear is tighter, the transmission is more stable, noise cannot be generated due to the existence of a gap in the transmission process, and meanwhile, the service life of the gear and the main shaft can be prolonged. But the anti-loosening piece arranged in the central shaft hole of the gear can influence the matching of the existing connecting shaft of the gear, and the excessive tightening or interference is difficult to avoid. Therefore, the prior art still has room for improvement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is, solves current technical problem, provides a firm and inseparable gear connection structure, and gear connection can the locking take off, can make the cooperation of gear and axle inseparabler, improves the reliability and the stability of its operation.

The utility model adopts the technical scheme that: the utility model provides a firm gear connection structure, characterized by includes gear, main shaft and key, the gear includes tooth, tooth shoulder, centre shaft hole and first keyway, the second keyway has been seted up with gear contact department to the main shaft, and the cross sectional shape of key is the same with the cross sectional shape who aims at into the rectangle of first keyway second keyway, and first keyway and second keyway are filled to the key, and the terminal surface of key is equipped with one to three screw, and every screw all is equipped with interference fit's screw in.

The utility model discloses an operating mechanism is, and first keyway and second keyway are filled to the key, and the terminal surface of key is equipped with one to three screw, and every screw all is equipped with (tight) sufficient complex screw in. The terminal surface of screw and key is equipped with one to the cooperation of the tension of three screw makes the key have certain inflation on the tapering face, makes the matching of key and keyway inseparabler, does not need the structure of locking piece, and simple structure all adopts the structure of standard part (all adopting the standard part like threaded screw) moreover, and the screw on the key also adopts the processing technology of standard part, and the cost is not high, can adopt when needs firm gear connection's structure the utility model discloses the structure.

Advantageous effect, the utility model provides a firm and inseparable gear connection structure, gear connection is firm and the gear is inseparabler with the cooperation of axle, improves the high reliability and the stability of its operation. The key and the key groove are matched more closely, the structure of the anti-loosening sheet is not needed, the structure is simple, and the cost is low.

Drawings

FIG. 1 is a schematic view of a connection structure of a locking gear of the present invention;

fig. 2 is a cross-sectional view of fig. 1 of the present invention.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

As shown in fig. 1, the components are labeled as follows: 1. gear body, 2, tooth, 3, tooth shoulder, 4, central shaft hole, 5, keyway, screw 6.

Firm gear connection structure includes: gear, main shaft and key, the gear body includes: tooth, tooth shoulder, centre shaft hole and first keyway, the second keyway has been seted up to main shaft department, and the cross sectional shape of key is the same with the alignment rectangle cross sectional shape of first keyway second keyway, and first keyway and second keyway are filled to the key, and the terminal surface of key is equipped with one to three screw, and every screw all is equipped with interference fit's screw in. After the key is matched and filled in the key slot, a screw 6 is screwed in the screw hole on the end face of the key and is tightly fixed.

The connection between the main shaft 8 and the central shaft hole 4 is tight and is not easy to loose.

The key has simple structure, a screw hole with a diameter of 3-4mm is arranged in the center of the end face of the key, a screw is screwed in the screw hole and is in interference fit with the screw hole, and if the screw is in interference fit with the screw hole, the size of the key can be expanded by 0.05-0.1 mm.

The above is only the embodiment of the present invention, not the scope of the present invention, all the equivalent structures or equivalent processes made by the contents of the specification and the drawings are utilized, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. The utility model provides a firm gear connection structure, characterized by includes gear, main shaft and key, the gear includes tooth, tooth shoulder, centre shaft hole and first keyway, the second keyway has been seted up with gear contact department to the main shaft, and the cross sectional shape of key is the same with the cross sectional shape who aims at into the rectangle of first keyway second keyway, and first keyway and second keyway are filled to the key, and the terminal surface of key is equipped with one to three screw, and every screw all is equipped with interference fit's screw in.

2. The firm gear connection structure as claimed in claim 1, wherein a screw hole of 3-4mm diameter is provided at the center of the end face of the key, and a screw is screwed into the screw hole.