CN207961462U - A kind of shafting locking mechanism - Google Patents

Abstract

The utility model relates to a shaft system locking structure, which comprises a shaft, a lock nut, and a locking piece. The lock nut is installed on the shaft and the bearing is pressed against the step of the shaft. A lock piece is set between the lock nut and the inner ring of the bearing. Two symmetrical lugs and an annular skirt are set on the lock piece. Several axial notches are arranged on the outer diameter of the lock nut, and the annular skirt on the lock plate is deformed and stuck in the axial notches of the lock nut. The utility model only uses one locking plate to realize mechanical locking, has a simple structure, good locking effect, and can be reused at the same time with low cost.

Description

A shaft locking structure

technical field

The utility model relates to a locking structure, in particular to a shaft system locking structure, which realizes the locking of the shaft system and prevents the matched parts in the shaft system from moving.

Background technique

During the operation of the transmission mechanism, the external working environment and internal gear transmission will generate shock and vibration. Although many methods are used to minimize the shock and vibration, the vibration is inevitable. The essence of locking is to prevent relative rotation between thread pairs. There are many locking methods, which are mainly divided into the following three categories in terms of their working principles: friction locking, mechanical locking, and permanent locking by destroying the thread pair relationship. The effect is not good; mechanical locking relies on the interaction between parts, and the locking effect is good, but the structure is more complicated; while destroying the relationship between thread pairs and locking, it destroys the shape characteristics of thread pairs to achieve locking and locking effect Good, but not reusable and costly.

Contents of the invention

The purpose of the utility model is to provide a shaft system locking structure, which has the characteristics of good locking effect, simple structure, reusability and low use cost.

The specific technical solution of the utility model is that the shafting locking structure includes a shaft, a lock nut, and a lock plate, the shaft is installed through a bearing, the inner ring of the bearing is matched with the shaft, one end of the shaft is provided with threads, and two symmetrical Distributed axial grooves, the lock nut is installed on the shaft and the bearing is pressed against the step of the shaft to achieve axial positioning, and a lock plate is set between the lock nut and the inner ring of the bearing, and the inner diameter of the lock plate is on the There are two symmetrical lugs extending towards the bearing direction, the two lugs are located in the two axial grooves on the shaft, and the outer diameter of the locking plate is provided with an annular skirt extending towards the lock nut On the other hand, the lock nut is a round nut with several axial notches on its outer diameter, and the annular skirt on the lock plate is deformed and stuck in the axial notches of the lock nut.

The locking piece of the utility model is provided with lugs, and is arranged in the groove of the shaft, so that the locking piece cannot rotate in the circumferential direction. In the gap, and then lock the nut, so as to realize the locking of the shafting. The utility model only uses one locking plate to realize mechanical locking, has a simple structure, good locking effect, and can be reused at the same time with low cost.

Description of drawings

Fig. 1 is the structural representation of this patent;

Fig. 2 is the structural representation of lock plate;

Fig. 3 is a side view of Fig. 2;

Fig. 4 is a schematic diagram of the structure of the locking nut.

Detailed ways

As shown in the figure, the shaft system locking structure includes a shaft 1, a lock nut 2, and a lock plate 3. The shaft 1 is installed through a bearing 4. The inner ring of the bearing 4 cooperates with the shaft 1. One end of the shaft 1 is provided with a thread. And two symmetrically distributed axial grooves, the lock nut 2 is installed on the shaft 1 and the bearing 4 is pressed against the step of the shaft 1 to achieve axial positioning, and the lock nut 2 and the inner ring of the bearing 4 are arranged The locking piece 3, the inner diameter of the locking piece 3 is provided with two symmetrical lugs 31 extending toward the direction of the bearing 4, the two lugs 31 are located in the two axial grooves on the shaft 1, the lock The outer diameter of the sheet 3 is provided with an annular skirt 32 extending toward the locking nut 2, the locking nut 2 is a round nut, and several axial notches 21 are arranged on the outer diameter, the locking sheet 3 The annular skirt 32 on the top is deformed and stuck in the axial notch 21 of the lock nut 2 .

Claims (1)

1. A shafting locking structure, characterized in that, the structure comprises a shaft (1), a lock nut (2), a lock plate (3), the shaft (1) is installed through a bearing 4, and the bearing (4) The inner ring fits with the shaft (1). One end of the shaft (1) is provided with threads and two symmetrically distributed axial grooves. The lock nut (2) is installed on the shaft (1) and presses the bearing (4) Leaning on the step of the shaft (1) to achieve axial positioning, a locking piece (3) is set between the lock nut (2) and the inner ring of the bearing 4, and the inner diameter of the locking piece (3) is provided with a bearing ( 4) Two symmetrical lugs (31) extending in the direction, the two lugs (31) are located in the two axial grooves on the shaft (1), and the outer diameter of the locking piece (3) is set There is an annular skirt (32) extending toward the lock nut (2), the lock nut (2) is a round nut, and several axial notches (21) are arranged on the outer diameter, and the lock plate The annular skirt (32) on (3) is stuck in the axial gap (21) of the lock nut (2) after being deformed.