CN205578486U

CN205578486U - Step axle

Info

Publication number: CN205578486U
Application number: CN201620319236.6U
Authority: CN
Inventors: 王勇根
Original assignee: BAOJI TOP OF TITANIUM INDUSTRY Co Ltd
Current assignee: BAOJI TOP OF TITANIUM INDUSTRY Co Ltd
Priority date: 2016-04-15
Filing date: 2016-04-15
Publication date: 2016-09-14
Anticipated expiration: 2026-04-15

Abstract

The utility model provides a step axle. Step axle includes the body and the key body, the body includes the axle body, locates axle body double -phase the first axle body and the second axle body to the tip, locate the first axle body and keep away from the first shaft shoulder of axle body one end, locate the second axle body and keep away from the second shaft shoulder of axle body one end and locate the first shaft shoulder and keep away from the spindle nose of axle body one end, the spindle nose includes the keyway, the key body install in in the keyway, the spindle nose still includes a plurality of fixed orificess and dead lever, the key body include with fixed hole position puts relatively and the same through -hole of quantity, the dead lever insert in in the fixed orifices and run through the through -hole. The utility model discloses step axle passes through the spindle nose sets up fixed orifices and dead lever, the key body set up with fixed hole position puts relatively and the same through -hole of quantity, through the dead lever insert in in the fixed orifices and run through the through -hole has increased the stability of the key body with the body to guaranteed that the stable of step axle uses.

Description

Step Shaft

Technical field

This utility model relates to a kind of rotating shaft, more specifically, it relates to a kind of Step Shaft.

Background technology

In prior art, the kind of shaft forgings is a lot, and the most most of rotating shafts are both provided with keyway, uses In installing key and being made by key to produce torsion between the part such as gear being arranged in rotating shaft etc. and rotating shaft Square, and when great majority install retaining element by key, owing to needs ensure part at rotation process not Sliding, this just requires that the gap between key and part is the least, i.e. there is pretightning force between part and key.

Existing structure keyway is little with the installation contact area of key, and therefore lifting surface area is little, is pacified by key During dress retaining element, exist and come off or the unstable situation such as slip.

Therefore, it is necessary to provide a kind of new Step Shaft.

Utility model content

The deficiency existed for prior art, the purpose of this utility model is to provide a kind of Step Shaft, To solve the problems referred to above.

The technical solution of the utility model is as follows:

A kind of Step Shaft, described Step Shaft includes body and key body, and described body includes axle body, is located at The first axle body and the second axle body of described axle body two opposed end, it is located at the first axle body away from described axle body First shaft shoulder of one end, it is located at the second axle body and away from second shaft shoulder of described axle body one end and is located at first The shaft shoulder is away from the spindle nose of described axle body one end, and it is described that described spindle nose includes that keyway, described key body are installed on In keyway, it is fixing with described that described spindle nose also includes that some fixing holes and fixing bar, described key body include The through hole that hole site is relative and quantity is identical, described fixing bar is inserted in described fixing hole and runs through institute State through hole.

Preferably, described fixing hole and fixing bar quantity are three.

Preferably, described fixing hole runs through described spindle nose, and the length of described fixing bar is not more than described solid Determine the length in hole.

Preferably, also include that centre bore, described centre bore run through described body.

Preferably, the sidewall extending perpendicularly to described key body of described fixing hole.

Preferably, described the first axle body and the diameter less than axle body of the second axle body, more than described first The shaft shoulder and the diameter of second shaft shoulder.

Preferably, described body is formed in one.

Preferably, described Step Shaft be structural alloy steel, bearing steel, mould steel, carbon tool steel, Any one in titanium or titanium alloy is made.

Preferably, two opposing end surfaces of described fixing bar are identical with the radian of described spindle nose outer wall.

The beneficial effects of the utility model are: this utility model Step Shaft is by arranging at described spindle nose Fixing hole and fixing bar, described key body is arranged and the described through hole that fixing hole position is relative and quantity is identical, In being inserted in described fixing hole by fixing bar and run through described through hole, add the steady of key body and body Qualitative, thus ensure that the stable use of Step Shaft.

Accompanying drawing explanation

Fig. 1 is the planar structure schematic diagram of this utility model Step Shaft；

Fig. 2 is the cross-sectional view of this utility model Step Shaft.

Detailed description of the invention

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.

Please refer to Fig. 1 and Fig. 2, the open a kind of Step Shaft 1 of this utility model, described Step Shaft 1 Including body and key body 10.

Described body includes axle body 11, centre bore 19, is located at the of described 11 liang of opposed ends of axle body One axis body 12 and the second axle body 13, it is located at the first axle body 11 away from the first of described axle body 11 one end The shaft shoulder 14, it is located at the second axle body 13 and away from second shaft shoulder 15 of described axle body 11 one end and is located at One shaft shoulder 14 is away from the spindle nose 16 of described axle body 11 one end；Described centre bore 19 runs through described body.

The middle part of described spindle nose 16 includes that keyway 161, described key body 10 are installed on described keyway 161 In, described spindle nose 16 also includes that some fixing holes 162 and fixing bar 163, described key body 10 include Relative with described fixing hole 162 position and that quantity is identical through hole 101, described fixing bar 163 inserts In described fixing hole 162 and run through described through hole 101.

In the present embodiment, described fixing hole 162 and fixing bar 163 quantity are three.

Described fixing hole 162 runs through described spindle nose 16, and the length of described fixing bar 163 is not more than described The length of fixing hole 162；Concrete, two opposing end surfaces of described fixing bar 163 and described spindle nose 16 The radian of outer wall is identical, and this structure does not affect the job stability of described Step Shaft 1.

The sidewall extending perpendicularly to described key body 10 of described fixing hole 162.

Described the first axle body 12 and the diameter less than axle body 11 of the second axle body 13, more than described first The shaft shoulder 14 and the diameter of second shaft shoulder 15；Described body is formed in one.

Described Step Shaft 1 be structural alloy steel, bearing steel, mould steel, carbon tool steel, titanium and Any one in titanium alloy is made.

Above-described is only embodiment of the present utility model, it should be noted here that for this area Those of ordinary skill for, without departing from this utility model create design on the premise of, it is also possible to do Go out to improve, but these belong to protection domain of the present utility model.

Claims

1. a Step Shaft, described Step Shaft includes body and key body, and described body includes axle body, sets In described axle body two opposed end the first axle body and the second axle body, be located at the first axle body away from described axle First shaft shoulder of body one end, it is located at the second axle body and away from second shaft shoulder of described axle body one end and is located at One shaft shoulder is away from the spindle nose of described axle body one end, and described spindle nose includes that keyway, described key body are installed on institute State in keyway, it is characterised in that described spindle nose also includes some fixing holes and fixing bar, described key body Including with the described through hole that fixing hole position is relative and quantity is identical, described fixing bar is inserted in described solid In determining hole and run through described through hole.

Step Shaft the most according to claim 1, it is characterised in that: described fixing hole and fixing bar Quantity is three.

Step Shaft the most according to claim 1, it is characterised in that: described fixing hole runs through described Spindle nose, the length of described fixing bar is not more than the length of described fixing hole.

Step Shaft the most according to claim 1, it is characterised in that: the two of described fixing bar are relative End face is identical with the radian of described spindle nose outer wall.

Step Shaft the most according to claim 1, it is characterised in that: also include centre bore, described Centre bore runs through described body.

Step Shaft the most according to claim 1, it is characterised in that: the extension side of described fixing hole To the sidewall being perpendicular to described key body.

Step Shaft the most according to claim 1, it is characterised in that: described the first axle body and second The diameter less than axle body of axis body, more than described first shaft shoulder and the diameter of second shaft shoulder.

Step Shaft the most according to claim 1, it is characterised in that: described body is formed in one.

Step Shaft the most according to claim 1, it is characterised in that: described Step Shaft is alloy knot Any one in structure steel, bearing steel, mould steel, carbon tool steel, titanium or titanium alloy is made.