CN204729456U - Engine crankshaft - Google Patents
Engine crankshaft Download PDFInfo
- Publication number
- CN204729456U CN204729456U CN201520499519.9U CN201520499519U CN204729456U CN 204729456 U CN204729456 U CN 204729456U CN 201520499519 U CN201520499519 U CN 201520499519U CN 204729456 U CN204729456 U CN 204729456U
- Authority
- CN
- China
- Prior art keywords
- engine crankshaft
- journal
- lightening hole
- main journal
- strengthening rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a kind of engine crankshaft.This engine crankshaft comprises: main journal, and its end face central authorities offer axially extended first lightening hole and form hollow structure, and this first lightening hole is cylindric, and centre is provided with strengthening rib; And rod journal, offer the second lightening hole in it and form hollow structure, this second lightening hole runs through the left and right sides end face of described rod journal.The main journal of this engine crankshaft and rod journal all adopt the light-weight design of hollow, make this engine crankshaft lightweight, reduce kinetic equation loss and cost, also improve the natural frequency of bent axle; In addition, this engine crankshaft leaves strengthening rib in the neutral position of main journal hollow, improves the structural strength of axle journal.
Description
Technical field
The utility model relates to engine art, particularly a kind of engine crankshaft.
Background technique
Engine crankshaft is the main rotary gadget of engine, and after loading onto connecting rod, upper and lower (back and forth) motion can accepting connecting rod becomes circulation (rotation) motion.Bent axle is the important parts on motor, and its material is made up of structural carbon steel or spheroidal graphite cast iron, has two significant points: main journal, rod journal, (also having other).Main journal is installed on cylinder body, and connecting rod neck is connected with crank pin end pore, and connecting rod small end hole is connected with steam-cylinder piston, is a typical slidercrank mechanism.The lubrication of bent axle mainly refers to and big end bearing shell and the lubrication of crank-shaft link neck and the lubrication of two immovable point. the rotation of bent axle is the power source of motor.Also be the driving source of whole mechanical system.
Available engine bent axle often uses solid crankshaft, and the main journal of bent axle and rod journal are solid, and bent axle is heavier, and kinetic equation loss is large, does not meet the trend of bent axle lightweight, energy-conserving and environment-protective.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present utility model, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Model utility content
The purpose of this utility model is to provide a kind of simple and reasonable engine crankshaft, the main journal of this engine crankshaft and rod journal all adopt the light-weight design of hollow, make this engine crankshaft lightweight, reduce kinetic equation loss and cost, also improve the natural frequency of bent axle.
For achieving the above object, provide a kind of engine crankshaft, comprising: main journal according to the utility model, its end face central authorities offer axially extended first lightening hole and form hollow structure, and this first lightening hole is cylindric, and centre is provided with strengthening rib; And rod journal, offer the second lightening hole in it and form hollow structure, this second lightening hole runs through the left and right sides end face of described rod journal.
Preferably, in technique scheme, the internal diameter of the first lightening hole is 0.2 to 0.7 times of described main journal external diameter.
Preferably, in technique scheme, the thickness of strengthening rib is 0.1 to 0.3 times of described main journal external diameter.
Preferably, in technique scheme, the second lightening hole is arc.
Preferably, in technique scheme, the internal diameter of the second lightening hole is 0.2 to 0.7 times of described rod journal external diameter.
Compared with prior art, the utility model has following beneficial effect: the main journal of this engine crankshaft and rod journal all adopt the light-weight design of hollow, make this engine crankshaft lightweight, reduce kinetic equation loss and cost, also improve the natural frequency of bent axle; In addition, this engine crankshaft leaves strengthening rib in the neutral position of main journal hollow, improves the structural strength of axle journal.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of engine crankshaft of the present utility model.
Fig. 2 is the broken section structural representation of engine crankshaft of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
As depicted in figs. 1 and 2, according to the main rotary gadget that the engine crankshaft of the utility model embodiment is engine, after loading onto connecting rod, upper and lower (back and forth) motion can accepting connecting rod becomes circulation (rotation) and moves, and is the important parts of on motor one.The rotation of bent axle is the power source of motor.Also be the driving source of whole mechanical system.The concrete structure of this engine crankshaft comprises: main journal 1 and rod journal 2, wherein, main journal 1 is installed on cylinder body, rod journal 2 is connected with crank pin end pore, connecting rod small end hole is connected with steam-cylinder piston, main journal and rod journal all adopt the light-weight design of hollow, make this engine crankshaft lightweight, reduce kinetic equation loss and cost, also improve the natural frequency of bent axle; In addition, this engine crankshaft leaves strengthening rib in the neutral position of main journal hollow, improves the structural strength of axle journal.
Specifically, as shown in Figure 2, main journal 1 is hollow structure, and namely the central authorities of main journal 1 offer axially extended first lightening hole 11, and preferably, this first lightening hole 11 is cylindric, and its internal diameter is about 0.2 to 0.7 times of main journal 1 external diameter.The centre of this first lightening hole 11 is provided with strengthening rib 12, and preferably, the thickness of strengthening rib 12 is about 0.1 to 0.3 times of main journal 1 diameter (external diameter).
As shown in Figure 2, rod journal 2 is hollow structure, namely offers the second lightening hole 21 in rod journal 2, this second lightening hole 21 runs through the left and right sides end face of rod journal 2, preferably, this second lightening hole 21 is arc, and its internal diameter is about 0.2 to 0.7 times of rod journal external diameter.
Preferably, the material of this engine crankshaft is cast iron, and main technique is casting.
To sum up, the main journal of this engine crankshaft and rod journal all adopt the light-weight design of hollow, make this engine crankshaft lightweight, reduce kinetic equation loss and cost, also improve the natural frequency of bent axle; In addition, this engine crankshaft leaves strengthening rib in the neutral position of main journal hollow, improves the structural strength of axle journal.
The aforementioned description to concrete exemplary of the present utility model is to illustrate and the object of illustration.These descriptions not want the utility model to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present utility model and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present utility model and various different selection and change.Scope of the present utility model is intended to limited by claims and equivalents thereof.
Claims (5)
1. an engine crankshaft, is characterized in that, comprising:
Main journal, its end face central authorities offer axially extended first lightening hole and form hollow structure, and this first lightening hole is cylindric, and centre is provided with strengthening rib; And
Rod journal, offer the second lightening hole in it and form hollow structure, this second lightening hole runs through the left and right sides end face of described rod journal.
2. engine crankshaft according to claim 1, is characterized in that, the internal diameter of described first lightening hole is 0.2 to 0.7 times of described main journal external diameter.
3. engine crankshaft according to claim 2, is characterized in that, the thickness of described strengthening rib is 0.1 to 0.3 times of described main journal external diameter.
4. engine crankshaft according to claim 2, is characterized in that, described second lightening hole is arc.
5. engine crankshaft according to claim 4, is characterized in that, the internal diameter of described second lightening hole is 0.2 to 0.7 times of described rod journal external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520499519.9U CN204729456U (en) | 2015-07-10 | 2015-07-10 | Engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520499519.9U CN204729456U (en) | 2015-07-10 | 2015-07-10 | Engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204729456U true CN204729456U (en) | 2015-10-28 |
Family
ID=54387811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520499519.9U Expired - Fee Related CN204729456U (en) | 2015-07-10 | 2015-07-10 | Engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204729456U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840645A (en) * | 2016-05-27 | 2016-08-10 | 隆鑫通用动力股份有限公司 | Light weight type crankshaft and engine thereof |
| CN106763121A (en) * | 2017-03-29 | 2017-05-31 | 青岛德盛机械制造有限公司 | A kind of engine crankshaft, engine and motorcycle |
| CN109611442A (en) * | 2019-02-15 | 2019-04-12 | 广西玉柴机器股份有限公司 | 10 cylinder diesel crankshaft of V-type |
| CN109611440A (en) * | 2019-02-15 | 2019-04-12 | 广西玉柴机器股份有限公司 | 18 cylinder diesel crankshaft of V-type |
| CN109654111A (en) * | 2019-02-15 | 2019-04-19 | 广西玉柴机器股份有限公司 | Engine crankshaft |
| CN111637146A (en) * | 2020-06-30 | 2020-09-08 | 广西玉柴机器股份有限公司 | Weight-reduced crankshaft and engine thereof |
| CN111637145A (en) * | 2020-06-30 | 2020-09-08 | 广西玉柴机器股份有限公司 | Weight-reduced cast iron crankshaft and casting method |
| US20210115540A1 (en) * | 2019-10-18 | 2021-04-22 | GM Global Technology Operations LLC | High-modulus, high-strength nodular iron and crankshaft |
| CN113931920A (en) * | 2021-11-05 | 2022-01-14 | 何占琦 | Crankshaft |
-
2015
- 2015-07-10 CN CN201520499519.9U patent/CN204729456U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840645A (en) * | 2016-05-27 | 2016-08-10 | 隆鑫通用动力股份有限公司 | Light weight type crankshaft and engine thereof |
| CN106763121A (en) * | 2017-03-29 | 2017-05-31 | 青岛德盛机械制造有限公司 | A kind of engine crankshaft, engine and motorcycle |
| CN109611442A (en) * | 2019-02-15 | 2019-04-12 | 广西玉柴机器股份有限公司 | 10 cylinder diesel crankshaft of V-type |
| CN109611440A (en) * | 2019-02-15 | 2019-04-12 | 广西玉柴机器股份有限公司 | 18 cylinder diesel crankshaft of V-type |
| CN109654111A (en) * | 2019-02-15 | 2019-04-19 | 广西玉柴机器股份有限公司 | Engine crankshaft |
| US20210115540A1 (en) * | 2019-10-18 | 2021-04-22 | GM Global Technology Operations LLC | High-modulus, high-strength nodular iron and crankshaft |
| US11618937B2 (en) * | 2019-10-18 | 2023-04-04 | GM Global Technology Operations LLC | High-modulus, high-strength nodular iron and crankshaft |
| CN111637146A (en) * | 2020-06-30 | 2020-09-08 | 广西玉柴机器股份有限公司 | Weight-reduced crankshaft and engine thereof |
| CN111637145A (en) * | 2020-06-30 | 2020-09-08 | 广西玉柴机器股份有限公司 | Weight-reduced cast iron crankshaft and casting method |
| CN113931920A (en) * | 2021-11-05 | 2022-01-14 | 何占琦 | Crankshaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20190710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |