CN201531516U - Crank shaft capable of reducing overall weight - Google Patents
Crank shaft capable of reducing overall weight Download PDFInfo
- Publication number
- CN201531516U CN201531516U CN2009201647028U CN200920164702U CN201531516U CN 201531516 U CN201531516 U CN 201531516U CN 2009201647028 U CN2009201647028 U CN 2009201647028U CN 200920164702 U CN200920164702 U CN 200920164702U CN 201531516 U CN201531516 U CN 201531516U
- Authority
- CN
- China
- Prior art keywords
- weight
- crank
- loss
- connecting rod
- arc
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/08—Crankshafts made in one piece
Abstract
A crank shaft capable of reducing overall weight comprises a main shaft neck, a connecting rod neck and a crank connecting the main shaft neck and the connecting rod neck. Weight reducing zones symmetrically and inwardly concave along a connecting line of the axes of the main shaft neck and the connecting rod neck are respectively disposed on two lateral sides of the crank, each weight reducing zone at least comprises an arc concave zone, the arc concave zone and concave faces of the adjacent weight reducing zones are in smooth transition, and round-cornered smooth transition is disposed at the connecting position of the weight reducing zones and the lateral sides of the crank. Weight reducing grooves symmetrically and inwardly concave along the connecting line of the axes of the main shaft neck and the connecting rod neck are disposed on one face of the crank connected with the main shaft neck or the connecting rod neck. With reasonable crank shaft structure and optimal design of the dovetail grooves, the crank shaft is capable of maximumly reducing weight, increasing balance ratio, obtaining relatively low rotary inertia in running process of an overall machine, and reducing motor vibration and noise.
Description
Technical field
The utility model relates to motor, particularly the structural design of engine crankshaft loss of weight part.
Background technique
Bent axle is one of part of most critical in the motor, because bent axle is bearing pressure of explosion, reciprocal inertia force and centrifugal inertia force, the carrying situation is very complicated, the bending distortion is serious, the imbalance rotation and the vibration of bent axle are very obvious, so crankshaft counter balance can play an effect that keeps balance and reduce to turn round nonuniformity.
The design of existing crankshaft counter balance mostly is the planar design of rule, and do not have corresponding loss of weight design on the equilibrium block, be unfavorable for reducing the weight of bent axle like this, thereby increased the overall weight of motor, run counter to the motor miniaturization, light-weighted development trend.Simultaneously, because the increase of weight, strengthen the rotary inertia of bent axle, finally had influence on the dynamic balancing of motor,
Increase the vibration of motor and improved the noise of complete machine.
Summary of the invention
The utility model provides a kind of bent axle that alleviates overall weight, purpose is by rational crankshaft structure design, the quality of maximized minimizing bent axle improves the crankshaft counterbalance rate, solves the technical problem that bent axle weight is big, rotator inertia is big and dynamic balancing is bad in the prior art.Further with the loss of weight district along main journal and connecting rod neck axial connecting line symmetric arrangement, improve dynamic balance performance, and adopt the mode of rounding off in the loss of weight zone, reduce stress and concentrate, improve the technical solution of the utility model more.
The utility model for the scheme that provides is provided is, design a kind of bent axle that alleviates overall weight, comprise main journal, connecting rod neck and the crank that connects both, described crank dual-side is respectively equipped with along the loss of weight district of main journal and connecting rod neck axial connecting line symmetry indent, this loss of weight district comprises the recessed district of arc at least, the recessed district with adjacent loss of weight district recessed face of this arc is rounding off, and the joint of loss of weight district and crank side is the fillet smooth transition.
Further solution of the present utility model is: the recessed district of described arc comprises first arc and second arc of different curvature, and described first arc and the second arc joint are rounding off.
Further again solution of the present utility model is: described adjacent loss of weight district recessed face is the plane, and this plane recessed face is connected by fillet is smooth with the crank side.
Further solution of the present utility model is: the one side that described crank connects main journal or connecting rod neck is respectively equipped with along the loss of weight groove of main journal and connecting rod neck axial connecting line symmetry indent.
Further solution of the present utility model is: the joint in the described loss of weight groove between each face is the fillet smooth transition, and the joint on loss of weight groove and crank surface also is the fillet smooth transition.
The utility model is by the optimal design of rational crankshaft structure and dovetail groove, and the quality of maximized minimizing bent axle improves the crankshaft counterbalance rate, and in the complete machine operation process, obtains lower rotary inertia, reduces the vibration of motor, reduces noise.
Description of drawings
Fig. 1 is the utility model bent axle normal view;
Fig. 2 is the loss of weight design diagram of the utility model crankshaft counter balance;
Fig. 3 is that the utility model crankshaft counter balance dovetail groove is arranged schematic representation.
Number in the figure is: 1, first arc; 2, second arc; 3, loss of weight district plane recessed face; 4, loss of weight groove; 5, loss of weight district.
Embodiment
In conjunction with above-mentioned description of drawings specific embodiment of the utility model.
By among Fig. 1 and Fig. 2 as can be known, this bent axle that alleviates overall weight comprises main journal, connecting rod neck and the crank that connects both, described crank dual-side is respectively equipped with along the loss of weight district of main journal and connecting rod neck axial connecting line symmetry indent, this loss of weight district comprises the recessed district of arc at least, the recessed district with adjacent loss of weight district recessed face of this arc is rounding off, and the joint of loss of weight district and crank side is the fillet smooth transition.The recessed district of described arc comprises first arc and second arc of different curvature, and described first arc and the second arc joint are rounding off.Described adjacent loss of weight district recessed face is the plane, and this plane recessed face is connected by fillet is smooth with the crank side.The utility model is processing loss of weight district on crankshaft crank directly, utilize crank to carry out counterweight, and each line segment is tangent mutually in the loss of weight zone, one section irregular curved surface of composition, the maximized weight that alleviates bent axle.
By among Fig. 1 and Fig. 3 as can be known, the one side that described crank connects main journal or connecting rod neck is respectively equipped with along the loss of weight groove of main journal and connecting rod neck axial connecting line symmetry indent, joint in the described loss of weight groove between each face is the fillet smooth transition, and the joint on loss of weight groove and crank surface also is the fillet smooth transition.Each face in the loss of weight zone all adopts the mode of rounding off, reduces stress and concentrates, and improves the working life of bent axle.
Be the loss of weight design example of the new type crank equilibrium block on a kind of small displacement engine bent axle below, this bent axle adopts casting iron craft, be the full integral one-piece crankshaft that supports, support by five main journals, adopt eight equilibrium blocks, the thick 14mm～18mm of equilibrium block, the main journal diameter is 45mm～55mm, length is 21mm～26mm, and the diameter of connecting rod neck is 35mm～45mm, and length is 20mm～25mm.The rational irregular curved design that this crankshaft counterbalance block structure adopts, tangent mutually with first arc 1, second arc 2 and loss of weight district plane recessed face 3, one section irregular curved surface of composition; And dovetail loss of weight groove 4 structures that adopt, as shown in Figure 3, can reach the weight that reduces bent axle itself, reduce crankshaft imbalance, also reduced cost of production simultaneously.
Adopt the loss of weight design of this new type crank equilibrium block to reduce the uneven rotary inertia that bent axle produces in operation process, improved the crankshaft counterbalance rate, finally reduced the vibration of complete machine, reduced the noise of complete machine.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. the bent axle that can alleviate overall weight comprises main journal, connecting rod neck and the crank that connects both, it is characterized in that: described crank dual-side is respectively equipped with along the loss of weight district of main journal and connecting rod neck axial connecting line symmetry indent.
2. according to the described bent axle that alleviates overall weight of claim 1, it is characterized in that: described loss of weight district comprises the recessed district of arc at least, the recessed district with adjacent loss of weight district recessed face of this arc is rounding off, and the joint of loss of weight district and crank side is the fillet smooth transition.
3. according to the described bent axle that alleviates overall weight of claim 1, it is characterized in that: the recessed district of described arc comprises first arc and second arc of different curvature, and described first arc and the second arc joint are rounding off.
4. according to each described bent axle that alleviates overall weight in the claim 1 to 3, it is characterized in that: described adjacent loss of weight district recessed face is the plane, and this plane recessed face is connected by fillet is smooth with the crank side.
5. according to each described bent axle that alleviates overall weight in the claim 1 to 3, it is characterized in that: the one side that described crank connects main journal or connecting rod neck is respectively equipped with along the loss of weight groove of main journal and connecting rod neck axial connecting line symmetry indent.
6. according to the described bent axle that alleviates overall weight of claim 5, it is characterized in that: the joint in the described loss of weight groove between each face is the fillet smooth transition, and the joint on loss of weight groove and crank surface also is the fillet smooth transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201647028U CN201531516U (en) | 2009-09-29 | 2009-09-29 | Crank shaft capable of reducing overall weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201647028U CN201531516U (en) | 2009-09-29 | 2009-09-29 | Crank shaft capable of reducing overall weight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531516U true CN201531516U (en) | 2010-07-21 |
Family
ID=42526920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201647028U Expired - Lifetime CN201531516U (en) | 2009-09-29 | 2009-09-29 | Crank shaft capable of reducing overall weight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531516U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226964A (en) * | 2013-06-13 | 2014-12-24 | 通用汽车环球科技运作有限责任公司 | Method of simultaneously manufacturing a plurality of crankshafts |
| CN105864273A (en) * | 2016-05-31 | 2016-08-17 | 中国嘉陵工业股份有限公司（集团） | Crank of motorcycle engine with large discharge capacity and balance shaft |
| CN106662140A (en) * | 2014-07-16 | 2017-05-10 | 新日铁住金株式会社 | Crank shaft for reciprocating engine |
| CN110617268A (en) * | 2019-09-29 | 2019-12-27 | 重庆长安汽车股份有限公司 | Engine crankshaft and vehicle |
| CN114962428A (en) * | 2022-06-14 | 2022-08-30 | 桂林福达重工锻造有限公司 | Four-cylinder lightweight crankshaft |
-
2009
- 2009-09-29 CN CN2009201647028U patent/CN201531516U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226964A (en) * | 2013-06-13 | 2014-12-24 | 通用汽车环球科技运作有限责任公司 | Method of simultaneously manufacturing a plurality of crankshafts |
| CN106662140A (en) * | 2014-07-16 | 2017-05-10 | 新日铁住金株式会社 | Crank shaft for reciprocating engine |
| CN106662140B (en) * | 2014-07-16 | 2019-06-21 | 日本制铁株式会社 | The crankshaft of reciprocating engine |
| CN105864273A (en) * | 2016-05-31 | 2016-08-17 | 中国嘉陵工业股份有限公司（集团） | Crank of motorcycle engine with large discharge capacity and balance shaft |
| CN110617268A (en) * | 2019-09-29 | 2019-12-27 | 重庆长安汽车股份有限公司 | Engine crankshaft and vehicle |
| CN114962428A (en) * | 2022-06-14 | 2022-08-30 | 桂林福达重工锻造有限公司 | Four-cylinder lightweight crankshaft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201531516U (en) | Crank shaft capable of reducing overall weight | |
| CN102788114A (en) | Variable radius engine crankshaft balancing mechanism | |
| CN2931908Y (en) | Band axle | |
| CN201991728U (en) | Counterweight balance structure for crankshaft of refrigeration type compressor | |
| CN2937647Y (en) | Balance axle | |
| US6581495B2 (en) | Balancer shaft | |
| CN203560100U (en) | Rotary compressor and air conditioning equipment with rotary compressor | |
| CA2586981C (en) | Balancing shaft | |
| CN214092695U (en) | Engine crankshaft with good sudden load increase resistance capability | |
| CN201953907U (en) | Suspended damper for use in high-speed rotating machine | |
| CN205154952U (en) | Plum blossom resilient coupling | |
| CN104895907B (en) | Bent axle and compressor | |
| CN201661467U (en) | Anti-thrust assembly of rotary compressor | |
| CN211820353U (en) | Crankshaft, engine crank connecting rod mechanism and engine | |
| CN203809497U (en) | Crankshaft and compressor | |
| CN203516426U (en) | Crankshaft structure | |
| CN217328075U (en) | Gasoline engine crankshaft | |
| CN203978610U (en) | Twin cylinder engine connecting rod | |
| CN207715335U (en) | A kind of compressor balance block structure | |
| CN207893048U (en) | Balance shaft and engine with the balance shaft | |
| CN206000848U (en) | A kind of compressor crank shaft | |
| CN204451285U (en) | The open-core type servo main transmission mechanism of full electric servo NC turret punch machine | |
| CN205013246U (en) | Crankshaft counter balance mounting structure | |
| CN212004103U (en) | Engine and balance shaft thereof | |
| CN202867696U (en) | Crank shaft balance block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100721 |