CN207406621U - High-strength ductile cast iron bent axle - Google Patents
High-strength ductile cast iron bent axle Download PDFInfo
- Publication number
- CN207406621U CN207406621U CN201721473177.9U CN201721473177U CN207406621U CN 207406621 U CN207406621 U CN 207406621U CN 201721473177 U CN201721473177 U CN 201721473177U CN 207406621 U CN207406621 U CN 207406621U
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- China
- Prior art keywords
- bent axle
- annulus
- diameter section
- cast iron
- ductile cast
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- 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
This high-strength ductile cast iron bent axle includes bent axle body, bent axle body one end is with input terminal, the other end is output terminal, the bent axle body output terminal includes the enlarged diameter section set gradually from input terminal to output terminal, middle diameter segment and reduced diameter section, it is connected between enlarged diameter section and middle diameter segment by annulus inclined-plane, middle diameter segment has annulus convex surface close to one end of reduced diameter section, there is annulus concave surface close to one end of middle diameter segment in reduced diameter section, the tangent connection in annulus convex surface and annulus concave surface, the annulus crowning radius is the 1/3 of annulus concave, it is 1 2.5mm to be respectively equipped with quenching layer and the depth of hardening in the circumferential surface of middle diameter segment circumferential surface and reduced diameter section；Gear is arranged on reduced diameter section, and axle sleeve is equipped between the gear and reduced diameter section, the flange outwards dug is equipped in one end of axle sleeve.
Description
Technical field
The utility model belongs to bent axle technical field more particularly to a kind of high-strength ductile cast iron bent axle.
Background technology
Due to the difference of power, cause the structural strength of bent axle needs in varying degrees.
For example, in more than 5KW generating sets, lawn machine and water pump assembly etc. is applied to, its output terminal of existing bent axle
Intensity can not meet the requirement of above-mentioned machinery.
Secondly, many cogged bent axles of band, the fixation of gear are relatively complicated.
For example, Chinese patent literature discloses, and a kind of bent axle, [application number:201620788054.3], including front end axis,
Rod journal, crank, trunnion, balance weight, rear axle are equipped with the eccentric bushing being connected with connecting rod at rod journal, partially
Heart set axis is rotated around rod journal；Eccentric bushing includes two panels bearing shell, and every bearing shell is equipped with to connect the circular hole of connecting rod, eccentric
The quantity of circular hole on axis is covered for 12, is arranged along the circumference of eccentric bushing by the order of 2-1-2-1-2-1-2-1, bearing shell both ends point
Not She You oilhole, the boss that two bearing shells are threadedly coupled is equipped on the outside of bearing shell, boss is equipped with location hole.Pass through eccentric bushing
Connecting rod stroke is adjusted, shortens compression travel, increases instroke, engine efficiency is improved and performance falls.
Above-mentioned scheme although above-mentioned plurality of advantages, still, the program does not solve the technical issues of above-mentioned thoroughly.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, providing a kind of junction structure intensity height and being more easily assembled high-strength
Spend ductile iron crankshaft.
In order to achieve the above objectives, the utility model employs following technical proposal：This high-strength ductile cast iron bent axle includes
Bent axle body, bent axle body one end are with input terminal, and the other end is output terminal, which is included from input terminal to output
Enlarged diameter section, middle diameter segment and the reduced diameter section set gradually is held, passes through annulus inclined-plane between enlarged diameter section and middle diameter segment
Connection, middle diameter segment have annulus convex surface close to one end of reduced diameter section, have in reduced diameter section close to one end of middle diameter segment
Annulus concave surface, the tangent connection in the annulus convex surface and annulus concave surface, the annulus crowning radius are annulus concave
1/3, it is respectively equipped with quenching layer in the circumferential surface of middle diameter segment circumferential surface and reduced diameter section and the depth of hardening is
1-2.5mm；
Gear is arranged on reduced diameter section, and axle sleeve is equipped between the gear and reduced diameter section, the one of axle sleeve
End is equipped with the flange outwards dug.Flange plays the role of axially position.
By design quench layer, structural strength can be improved, avoid power output not in time and output stability
The technical problems such as difference.
The annulus concave surface of design, the technique that once-forming grinding can be used to circular sliding slopes position eliminate processing institute
The internal stress of generation, structure is simpler and further improves the structural strength of junction.Connecting rod neck root annulus convex surface,
The roughness of fillet is promoted, reduces existing stress when fillet is processed, promotes the bending fatigue strength of fillet.
The mechanical performance of existing universal machine ductile iron crankshaft, can only substantially meet the standard of QT700-5, i.e. tension is strong
Degree >=700MPa, elongation percentage >=5% are widely used in the engine of below 5KW, but to power requirement up to more than 5KW and right
Alternating load changes the considerably less of engine application greatly.
The axle sleeve collaboration turnup structure of design, can further improve packaging efficiency.
In above-mentioned high-strength ductile cast iron bent axle, the annulus concave is not less than 6.
In above-mentioned high-strength ductile cast iron bent axle, the annulus crowning radius is not less than 2.
In above-mentioned high-strength ductile cast iron bent axle, the reduced diameter section is equipped with locating slot, in the inner wall of axle sleeve
Equipped with the flat key inserted in the locating slot.
In above-mentioned high-strength ductile cast iron bent axle, the axle sleeve outer wall is equipped with external splines, in the endoporus of gear
Equipped with internal spline, the external splines and internal spline are meshed.
In above-mentioned high-strength ductile cast iron bent axle, the bent axle body output terminal end is equipped with connecting screw hole.
In above-mentioned high-strength ductile cast iron bent axle, it is equipped at the outer aperture of the connecting screw hole and is oriented to reaming.
In above-mentioned high-strength ductile cast iron bent axle, the axle sleeve is metal axle sleeve.
Compared with prior art, it is the advantages of this high-strength ductile cast iron bent axle：
1st, layer is quenched by designing, structural strength can be improved, avoid stablizing not in time with output for power output
The technical problems such as property difference.
2nd, the annulus concave surface of design, the technique that once-forming grinding can be used to circular sliding slopes position, eliminates processing
Generated internal stress, structure is simpler and further improves the structural strength of junction.Connecting rod neck root annulus convex surface,
It promotes the roughness of fillet, existing stress when reducing fillet processing, promotes the bending fatigue strength of fillet.
3rd, spheroidal graphite cast-iron manufactures, intensity higher.
4th, the axle sleeve collaboration turnup structure of design, can further improve packaging efficiency.
Description of the drawings
Fig. 1 is structure diagram provided by the utility model.
Fig. 2 is the structure diagram after increase gear provided by the utility model.
In figure, bent axle body 1, annulus protrusion 10, convex block 101, enlarged diameter section 11, middle diameter segment 12, reduced diameter section 13, positioning
Slot 131, annulus inclined-plane 14, annulus convex surface 15, annulus concave surface 16, quenching layer 17, connecting screw hole 18, be oriented to reaming 19, gear 2,
Conical nose 20, thread head 201, axle sleeve 3, flange 31.
Specific embodiment
It is the specific embodiment of utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, this high-strength ductile cast iron bent axle includes bent axle body 1,1 one end of bent axle body is with input terminal, separately
One end is output terminal.
1 output terminal of bent axle body includes the enlarged diameter section 11 from input terminal to output terminal, 12 and of middle diameter segment that are set gradually from
Reduced diameter section 13 is connected between enlarged diameter section 11 and middle diameter segment 12 by annulus inclined-plane 14, and middle diameter segment 12 is close to small straight
One end of footpath section 13 has annulus convex surface 15, has annulus concave surface 16, institute close to one end of middle diameter segment 12 in reduced diameter section 13
The 16 tangent connection of annulus convex surface 15 and annulus concave surface stated, 15 radius of annulus convex surface are the 1/3 of 16 radius of annulus concave surface.
Specifically, 16 radius of annulus concave surface is not less than 6.
Secondly, 15 radius of annulus convex surface is not less than 2.
Quenching layer 17 is respectively equipped in the circumferential surface of middle 12 circumferential surface of diameter segment and reduced diameter section 13 and described is quenched
17 depth of fire bed is 1-2.5mm；Case hardness is HRC50-55.
As shown in Figs. 1-2, gear 2 is arranged on reduced diameter section 13, and is set between the gear 2 and reduced diameter section 13
There is axle sleeve 3, axle sleeve 3 is metal axle sleeve.The flange 31 outwards dug is equipped in one end of axle sleeve 3.
The length of axle sleeve 3 is the 1/4 of 13 length of reduced diameter section, and axle sleeve 3 and 13 circumferentially fixed connection of reduced diameter section.
Axle sleeve 3 and 2 circumferentially fixed connection of gear.
Specifically, locating slot 131 is equipped on reduced diameter section 13, is equipped in the inner wall of axle sleeve 3 and inserts in the locating slot
Flat key 32 in 131.
External splines is equipped in 3 outer wall of axle sleeve, internal spline, the external splines and internal spline are equipped in the endoporus of gear 2
It is meshed.
In addition, it is equipped with connecting screw hole 18 in 1 output terminal end of bent axle body.
It is equipped at 18 outer aperture of connecting screw hole and is oriented to reaming 19.
Have at the middle part of bent axle body 1 there are two symmetrically arranged annulus protrusion 10, and close to the annulus of 1 input terminal of bent axle body
Convex block 101 is connected on protrusion 10.
There is conical nose 20 in 1 input terminal of bent axle body and be connected to the thread head 201 of conical nose end.
Arc groove is equipped on conical nose 20.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (8)
1. a kind of high-strength ductile cast iron bent axle, including bent axle body (1), bent axle body (1) one end is with input terminal, and the other end is
Output terminal, which is characterized in that described bent axle body (1) output terminal includes the enlarged diameter section set gradually from input terminal to output terminal
(11), middle diameter segment (12) and reduced diameter section (13) pass through annulus inclined-plane between enlarged diameter section (11) and middle diameter segment (12)
(14) connect, middle diameter segment (12) has annulus convex surface (15) close to one end of reduced diameter section (13), is leaned in reduced diameter section (13)
One end of diameter segment (12) has annulus concave surface (16), the annulus convex surface (15) and annulus concave surface (16) tangent company near
It connects, described annulus convex surface (15) radius is the 1/3 of annulus concave surface (16) radius, in middle diameter segment (12) circumferential surface and small straight
The circumferential surface of footpath section (13) is respectively equipped with quenching layer (17) and described quenching layer (17) depth is 1-2.5mm；
Gear (2) is arranged on reduced diameter section (13), and axle sleeve is equipped between the gear (2) and reduced diameter section (13)
(3), the flange (31) outwards dug is equipped in one end of axle sleeve (3).
2. high-strength ductile cast iron bent axle according to claim 1, which is characterized in that described annulus concave surface (16) radius
To be not less than 6.
3. high-strength ductile cast iron bent axle according to claim 1, which is characterized in that described annulus convex surface (15) radius
To be not less than 2.
4. high-strength ductile cast iron bent axle according to claim 1, which is characterized in that set on the reduced diameter section (13)
There is locating slot (131), the flat key (32) inserted in the locating slot (131) is equipped in the inner wall of axle sleeve (3).
5. high-strength ductile cast iron bent axle according to claim 4, which is characterized in that described axle sleeve (3) outer wall is equipped with
External splines is equipped with internal spline in the endoporus of gear (2), and the external splines and internal spline are meshed.
6. high-strength ductile cast iron bent axle according to claim 1, which is characterized in that described bent axle body (1) output terminal
End is equipped with connecting screw hole (18).
7. high-strength ductile cast iron bent axle according to claim 6, which is characterized in that described connecting screw hole (18) exit orifice
It is equipped at mouthful and is oriented to reaming (19).
8. high-strength ductile cast iron bent axle according to claim 1, which is characterized in that the axle sleeve (3) is metal shaft
Set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473177.9U CN207406621U (en) | 2017-11-07 | 2017-11-07 | High-strength ductile cast iron bent axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473177.9U CN207406621U (en) | 2017-11-07 | 2017-11-07 | High-strength ductile cast iron bent axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207406621U true CN207406621U (en) | 2018-05-25 |
Family
ID=62318352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721473177.9U Expired - Fee Related CN207406621U (en) | 2017-11-07 | 2017-11-07 | High-strength ductile cast iron bent axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207406621U (en) |
-
2017
- 2017-11-07 CN CN201721473177.9U patent/CN207406621U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180525 Termination date: 20201107 |