CN206144965U

CN206144965U - Wearability bent axle

Info

Publication number: CN206144965U
Application number: CN201621102485.6U
Authority: CN
Inventors: 钟海志
Original assignee: WENLING XINDU MACHINERY Co Ltd
Current assignee: WENLING XINDU MACHINERY Co Ltd
Priority date: 2016-10-08
Filing date: 2016-10-08
Publication date: 2017-05-03
Anticipated expiration: 2026-10-08

Abstract

The utility model provides a wearability bent axle belongs to machine parts technical field. It has been solved current bent axle stress concentration phenomenon and serious problem has appeared. This wearability bent axle, including the main crank, left side axle journal and right axle journal, the both ends of main crank link to each other with left axle journal and right axle journal respectively, left side axle journal is connected with the positioning end through left crank, right side axle journal is connected with the driving end through right crank, the diameter of main crank is greater than the diameter of left axle journal, the degree of depth H that the junction of main crank and left axle journal set up to circular structure and circular arc is 0.15 millimeter, length L is 1 millimeter, radius R is 0.8 millimeter, the main crank is the same with being connected with left axle journal of right axle journal, the positioning end, left side crank, left side axle journal, the main crank, right side axle journal, right crank and driving end structure as an organic whole. The utility model has the advantages of life is longer.

Description

A kind of wearability bent axle

Technical field

This utility model belongs to mechanical fitting technical field, is related to a kind of bent axle, more particularly to a kind of wearability bent axle.

Background technology

Bent axle is the main rotary gadget of engine, and after loading onto connecting rod, the up and down motion that can accept connecting rod becomes shuttling movement, Mainly it is made up of carbon structural steels or spheroidal graphite cast-iron, bears power that connecting rod transmits and be transformed into torque and exported simultaneously by bent axle Other adnexaes are driven to work, bent axle is subject to centrifugal force, the gas inertia power of mechanical periodicity and the reciprocal inertia force of gyrating mass Collective effect, makes bent axle bear the effect of flexion torsion load, therefore typically requires that bent axle has enough strength and stiffness, axle journal Surface needs wear-resisting, the uniform, balance that works good.

As bent axle stress is complicated, geometric cross section shape matching is special, and going back neither one when bent axle is designed so far can be complete Be all-trans reflect objective reality theoretical formula it is generally applicable.Therefore, current bent axle be mainly designed to rely on Experience Design, i.e., using being permitted Then the statistics of more existing crankshaft structure and size, the basic size so as to primarily determining that bent axle carry out CONSTRUCTED SPECIFICATION Design, intensity compound nucleus and sampling test, finally determine the structure and size of bent axle.

At present as bent axle on the market is complex-shaped, during life-time service, stress concentration phenomenon occurs very tight Weight, is especially particularly protruded with the arc transition area stress concentration phenomenon of crank in axle journal.

The content of the invention

The purpose of this utility model is for the above-mentioned problems in the prior art, there is provided one kind effectively can be reduced There is the bent axle for increasing its wearability in stress concentration phenomenon.

The purpose of this utility model can be realized by following technical proposal：A kind of wearability bent axle, including main crank, a left side Axle journal and right axle neck, the two ends of the main crank are connected with left axle neck and right axle neck respectively, and described left axle neck passes through left crank Be connected with positioning end, described right axle neck is connected with driving end by right crank, it is characterised in that the main crank it is straight Diameter of the footpath more than left axle neck, the junction of described main crank and left axle neck are set to the depth H of arc structure and circular arc and are 0.15 millimeter, length L is 1 millimeter, and radius R is 0.8 millimeter, and the connection of described main crank with right axle neck is identical with left axle neck, Described positioning end, left crank, left axle neck, main crank, right axle neck, right crank and driving end are structure as a whole.

In a kind of above-mentioned wearability bent axle, described driving end center offers axis hole, the top of the driving end Hemispheric groove is offered above axis hole.

In a kind of above-mentioned wearability bent axle, the diameter D of the groove is 16 millimeters.

In a kind of above-mentioned wearability bent axle, described main crank is streamlined structure.

In a kind of above-mentioned wearability bent axle, its material is QT600-3 spheroidal graphite cast-iron.

The advantage of this wearability bent axle is：By the diameter that the diameter of main crank is set greater than axle journal, can be effective Prevent the connecting rod being sheathed on axle journal from inwardly offseting in transmission process, furthermore this bent axle is by the circular arc to main crank and axle journal Transition region is improved, and can effectively reduce stress concentration phenomenon increases its wearability.

Compared with prior art, this wearability bent axle has the advantages that service life is longer.

Description of the drawings

Fig. 1 is the structural representation of this wearability bent axle.

Fig. 2 is the schematic enlarged-scale view in Fig. 1 at A.

In figure, 1, main crank；2nd, left axle neck；3rd, right axle neck；4th, left crank；5th, positioning end；6th, right crank；7th, driving end； 8th, axis hole；9th, groove.

Specific embodiment

The following is specific embodiment of the utility model and combine accompanying drawing, further is made to the technical solution of the utility model Description, but this utility model is not limited to these embodiments.

As shown in Figure 1 and Figure 2, this wearability bent axle, including main crank 1, left axle neck 2 and right axle neck 3, the two ends of main crank 1 It is connected with left axle neck 2 and right axle neck 3 respectively, left axle neck 2 is connected with positioning end 5 by left crank 4, right axle neck 3 passes through right song Handle 6 is connected with driving end 7, and the diameter with diameter greater than left axle neck 2 of main crank 1, main crank 1 are set with the junction of left axle neck 2 The depth H for being set to arc structure and circular arc is 0.15 millimeter, and length L is 1 millimeter, and radius R is 0.8 millimeter, main crank 1 and right axle The connection of neck 3 is identical with left axle neck 2, positioning end 5, left crank 4, left axle neck 2, main crank 1, right axle neck 3, right crank 6 and transmission End 7 is structure as a whole.

Further describe in detail, 7 center of driving end offers axis hole 8, the top of driving end 7 is located above axis hole 8 and offers half Spherical groove 9, the diameter D of groove 9 is 16 millimeters, and main crank 1 is streamlined structure, and the material of the bent axle is QT600-3 balls Black cast iron.

Specific embodiment described herein is only explanation for example to this utility model spirit.This utility model institute Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment Mode substitute, but without departing from it is of the present utility model spirit or surmount scope defined in appended claims.

Although more used herein main crank 1, left axle neck 2, right axle neck 3, left crank 4, positioning end 5, right crank 6, The terms such as driving end 7, axis hole 8, groove 9, but it is not precluded from the probability using other terms.The use of these terms is only to be Essence of the present utility model described and explained more easily；Being construed as any additional restriction is all and this reality It is contrary with new spirit.

Claims

1. a kind of wearability bent axle, including main crank（1）, left axle neck（2）With right axle neck（3）, the main crank（1）Two ends point Not with left axle neck（2）With right axle neck（3）It is connected, described left axle neck（2）By left crank（4）With positioning end（5）It is connected, institute The right axle neck stated（3）By right crank（6）With driving end（7）It is connected, it is characterised in that the main crank（1）Diameter it is big In left axle neck（2）Diameter, described main crank（1）With left axle neck（2）Junction be set to the depth of arc structure and circular arc Degree H is 0.15 millimeter, and length L is 1 millimeter, and radius R is 0.8 millimeter, described main crank（1）With right axle neck（3）Connection with Left axle neck（2）Identical, described positioning end（5）, left crank（4）, left axle neck（2）, main crank（1）, right axle neck（3）, right crank （6）And driving end（7）It is structure as a whole.

2. a kind of wearability bent axle according to claim 1, it is characterised in that described driving end（7）Center offers Axis hole（8）, the driving end（7）Top be located at axis hole（8）Top offers hemispheric groove（9）.

3. a kind of wearability bent axle according to claim 2, it is characterised in that the groove（9）Diameter D be 16 milli Rice.

4. a kind of wearability bent axle according to claim 1, it is characterised in that described main crank（1）For streamlined knot Structure.

5. a kind of wearability bent axle according to claim 1, it is characterised in that the material of the bent axle is QT600-3 spheroidal graphites Cast iron.