CN102224782A - Speed changing box steering mechanism of crawler-type harvester - Google Patents
Speed changing box steering mechanism of crawler-type harvester Download PDFInfo
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- CN102224782A CN102224782A CN2011101382635A CN201110138263A CN102224782A CN 102224782 A CN102224782 A CN 102224782A CN 2011101382635 A CN2011101382635 A CN 2011101382635A CN 201110138263 A CN201110138263 A CN 201110138263A CN 102224782 A CN102224782 A CN 102224782A
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Abstract
The invention relates to a speed changing box steering mechanism of a crawler-type harvester. The speed changing box steering mechanism provided by the invention comprises a brake shaft, a central transmission gear with clutch teeth, a steering gear, a steering shifting fork, a return spring and a friction plate, wherein the central transmission gear is connected with a jaw clutch of the steering gear; the central transmission gear is thermally matched with the brake shaft; the steering shifting fork is arranged in a shifting fork groove of the steering gear; the return spring is arranged between the brake shaft and the steering gear; the friction plate is sheathed on the steering gear; the included angle between the connection part of the central transmission gear and the clutch teeth of the steering gear is 88 degrees; and the entrance angle of the clutch teeth of the central transmission gear is 30 degrees. The speed changing box steering mechanism of the crawler-type harvester provided by the invention has the advantages of novel structure, high brake shaft rigidity, good clutch performance and long service life.
Description
Technical field
The present invention relates to crawler type grain header gearbox steering mechanism, especially adopt the crawler type grain header gearbox steering mechanism of jaw clutch formula structure.
Background technology
The steering mechanism of crawler type grain header gearbox mainly adopts jaw clutch formula, differential type and steering cluth formula several at present.Adopt the form of jaw clutch mostly in the steering mechanism of the crawler type grain header gearbox of 130～228cm for swath, the steering mechanism of the form of existing employing jaw clutch is as follows: two splined shaft together support work the central driver gear that has the clutch tooth, left and right both sides are tooth sectors that the clutch tooth is arranged, central driver gear and tooth sector are by tooth embedding clutch, the problem of its existence is because the splined shaft cantilever is longer, rigidity is relatively poor, centering precision is poor, thereby influences the life-span and the clutch reliability of central driver gear gear and tooth sector; The endoporus that has the most common central driver gear now is of a size of
Brake axle and central driver gear cooperation place are of a size of
The equipped interference fit that adopts of central driver gear and brake axle, directly be press-fitted and finish by punch press, the magnitude of interference can only be controlled at 0.01～0.02mm, the tolerance of gear hole is 0～+ 0.025, the cylindrical tolerance of axle is easy to generate too pine or be press-fitted difficulty of cooperation in this scope, therefore the tolerance range of two products just requires quite strictness, fit dimension must be accurately, processing has increased very big difficulty to product, greatly reduces production efficiency, also very easily is press-fitted in the process at punch press simultaneously and causes workpiece to damage because of pressure is excessive, and because both magnitudes of interference are less than normal, greatly reduce the serviceability and the service life of sub-assembly, bearing capacity is poor simultaneously, also easily comes off.The angle angle of the clutch tooth junction of existing central driver gear and tooth sector is 90 °, because it is very frequent that the steering mechanism of grain header uses, the clutch tooth frequent in conjunction with separate, make the surface wear of junction of clutch tooth be exceedingly fast, and the clutch tooth side wearing and tearing near the end are faster, form an inclined-plane, central driver gear and tooth sector clutch tooth are thrown off, influenced walking performance; The entrance angle angle of central driver gear two ends clutch tooth is 20 °, and the problem of existence is that the entrance angle angle is less than normal, and the incision of clutch tooth has some setbacks, thereby influences the disengaging performance of steering mechanism.
Summary of the invention
The objective of the invention is in order to solve existing crawler type grain header gearbox steering mechanism above shortcomings, a kind of novel structure is provided, the rigidity of axle and the centering precision height of gear, the difficult disengagement of central driver gear and tooth sector clutch tooth, the crawler type grain header gearbox steering mechanism that disengaging performance is good.
In order to realize above-mentioned goal of the invention, the present invention has adopted following technical scheme:
Crawler type grain header gearbox steering mechanism, comprise brake axle, band clutch tooth central driver gear, tooth sector, turn to shift fork, return spring and friction plate, central driver gear is connected with tooth sector tooth embedding clutch, and central driver gear heat fits on the one whole brake axle; Turn to shift fork to be installed in the fork slot of tooth sector, return spring is installed between brake axle and the tooth sector, and friction plate is sleeved on the tooth sector; The angle angle of the clutch tooth junction of described central driver gear and tooth sector is 88 °, and the clutch tooth entrance angle angle of central driver gear is 30 °.
As preferably, the endoporus of described central driver gear is of a size of
Brake axle and central driver gear cooperation place are of a size of
The hot allotment of labor of central driver gear and brake axle plants as follows: central driver gear is heated to 170 ℃～180 ℃, be incubated 70 minutes～100 minutes, the endoporus heat expansion 0.05mm～0.07mm of central driver gear, brake axle is screwed in the endoporus of central driver gear, can finish heat fast and easily joins, and guarantee that heat joins the magnitude of interference, the quality and the working (machining) efficiency of product have been improved, the serviceability and the service life of central driver gear and brake axle sub-assembly have been improved, the good and mutual difficult drop-off of sub-assembly bearing capacity.
Adopted a kind of crawler type grain header gearbox steering mechanism of technique scheme, central driver gear vertically is assemblied on the one whole brake axle, has improved the rigidity of brake axle, the centering precision height of central driver gear gear and tooth sector.The angle angle of the clutch tooth junction of central driver gear and tooth sector is 88 °, makes central driver gear and tooth sector clutch tooth be difficult for disengagement and wear-resisting, thereby has prolonged the service life of gearbox.The clutch tooth entrance angle angle of central driver gear is 30 °, and the entrance angle angle is big, and the engagement of clutch tooth easily.In sum, the advantage of this crawler type grain header gearbox steering mechanism is a novel structure, the rigidity height of brake axle, and disengaging performance is good, long service life.
Description of drawings
Fig. 1: embodiments of the invention structural representation.
Fig. 2: the structural representation that turns to gear in the embodiments of the invention.
Fig. 3: the C-C generalized section among Fig. 2.
Fig. 4: the schematic diagram of central driver gear clutch tooth part of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, Fig. 2, Fig. 3 and Fig. 4 the present invention is described further.
Crawler type grain header gearbox steering mechanism as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise brake axle 1, band clutch tooth central driver gear 2, tooth sector 3, turn to shift fork 4, return spring 6 and friction plate 5.3 tooth embedding clutches are connected central driver gear 2 with tooth sector, central driver gear 2 heat fit on the one whole brake axle 1, be about to two original splined shafts and make single brake axle 1 into, improved the rigidity of brake axle 1, the centering precision height of central driver gear gear 2 and tooth sector 3.Turn to shift fork 4 to be installed in the fork slot of tooth sector 3, return spring 6 is installed between brake axle 1 and the tooth sector 3, and friction plate 5 is sleeved on the tooth sector 3.
The clutch tooth entrance angle B angle of central driver gear 2 is 30 °, with the entrance angle angle of existing central driver gear 2 clutch teeth is to change 30 ° into by 20 °, the entrance angle angle is big, the engagement of clutch tooth makes the clutch tooth incision of central driver gear 2 and tooth sector 3 be more prone to smooth and easy easily, thereby has improved the disengaging performance of steering mechanism.
The endoporus of central driver gear is of a size of
Brake axle and central driver gear cooperation place are of a size of
Matching allowance is 0.01mm～0.02mm.The hot allotment of labor of central driver gear and brake axle plants as follows: central driver gear is heated to 170 ℃～180 ℃, be incubated 70 minutes～100 minutes, the endoporus heat expansion 0.05mm～0.07mm of central driver gear screws in brake axle in the endoporus of central driver gear and brake axle and central driver gear heat can be made into one.This moment, the cooperation of central driver gear and brake axle was interference fits in fact, so do not need to be press-fitted with punch press, the endoporus of central driver gear gets final product only to need manually to rotate brake axle into hand, and heat is joined and is transformed into interference fit because of central driver gear cools off naturally after finishing.
Following table is the flow process and the effect explanation of hot allotment of labor's skill.
Claims (2)
1. crawler type grain header gearbox steering mechanism, comprise brake axle, band clutch tooth central driver gear, tooth sector, turn to shift fork, return spring and friction plate, it is characterized in that central driver gear is connected with tooth sector tooth embedding clutch, central driver gear heat fits on the one whole brake axle; Turn to shift fork to be installed in the fork slot of tooth sector, return spring is installed between brake axle and the tooth sector, and friction plate is sleeved on the tooth sector; The angle angle of the clutch tooth junction of described central driver gear and tooth sector is 88 °, and the clutch tooth entrance angle angle of central driver gear is 30 °.
2. crawler type grain header gearbox according to claim 1 steering mechanism is characterized in that the endoporus of described central driver gear is of a size of
Brake axle and central driver gear cooperation place are of a size of
The hot allotment of labor of central driver gear and brake axle plants as follows: central driver gear is heated to 170 ℃～180 ℃, be incubated 70 minutes～100 minutes, the endoporus heat expansion 0.05mm～0.07mm of central driver gear screws in brake axle in the endoporus of central driver gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101382635A CN102224782B (en) | 2011-05-26 | 2011-05-26 | Speed changing box steering mechanism of crawler-type harvester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101382635A CN102224782B (en) | 2011-05-26 | 2011-05-26 | Speed changing box steering mechanism of crawler-type harvester |
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| Publication Number | Publication Date |
|---|---|
| CN102224782A true CN102224782A (en) | 2011-10-26 |
| CN102224782B CN102224782B (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101382635A Active CN102224782B (en) | 2011-05-26 | 2011-05-26 | Speed changing box steering mechanism of crawler-type harvester |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103749021A (en) * | 2014-01-03 | 2014-04-30 | 广元市远通汽车配件制造有限公司 | Steering mechanism of tracked miniature rice and wheat combine harvester |
| CN103935399A (en) * | 2014-04-01 | 2014-07-23 | 江苏云马农机制造有限公司 | Steering brake device |
| CN104303618A (en) * | 2014-09-22 | 2015-01-28 | 浙江云洲科技有限公司 | Special gearbox steering clutch for crawler self-propelled rotary cultivator |
| CN107585209A (en) * | 2017-09-13 | 2018-01-16 | 张铁民 | A kind of automatic turning rice seedlings machine |
| CN110617289A (en) * | 2019-08-26 | 2019-12-27 | 重庆宏美科技有限公司 | Left-right steering control mechanism |
| CN114396433A (en) * | 2022-01-24 | 2022-04-26 | 西南大学 | Spacing seat, outer sleeve, clutch, left and right clutch brake device and gearbox |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0284110A (en) * | 1988-09-19 | 1990-03-26 | Iseki & Co Ltd | Speed change operation device for combine or the like |
| CN2395947Y (en) * | 1999-11-19 | 2000-09-13 | 浙江浦江齿轮有限公司 | Caterpillar running device steering mechanism |
| CN2512220Y (en) * | 2001-07-19 | 2002-09-25 | 安棋 | Driving bridge for crawler-type combine |
| JP2003200747A (en) * | 2002-01-07 | 2003-07-15 | Kubota Corp | Speed change operating device |
| CN202077406U (en) * | 2011-05-26 | 2011-12-21 | 浙江浦江齿轮有限公司 | Gear box steering mechanism of crawler type harvester |
-
2011
- 2011-05-26 CN CN2011101382635A patent/CN102224782B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0284110A (en) * | 1988-09-19 | 1990-03-26 | Iseki & Co Ltd | Speed change operation device for combine or the like |
| CN2395947Y (en) * | 1999-11-19 | 2000-09-13 | 浙江浦江齿轮有限公司 | Caterpillar running device steering mechanism |
| CN2512220Y (en) * | 2001-07-19 | 2002-09-25 | 安棋 | Driving bridge for crawler-type combine |
| JP2003200747A (en) * | 2002-01-07 | 2003-07-15 | Kubota Corp | Speed change operating device |
| CN202077406U (en) * | 2011-05-26 | 2011-12-21 | 浙江浦江齿轮有限公司 | Gear box steering mechanism of crawler type harvester |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103749021A (en) * | 2014-01-03 | 2014-04-30 | 广元市远通汽车配件制造有限公司 | Steering mechanism of tracked miniature rice and wheat combine harvester |
| CN103935399A (en) * | 2014-04-01 | 2014-07-23 | 江苏云马农机制造有限公司 | Steering brake device |
| CN104303618A (en) * | 2014-09-22 | 2015-01-28 | 浙江云洲科技有限公司 | Special gearbox steering clutch for crawler self-propelled rotary cultivator |
| CN107585209A (en) * | 2017-09-13 | 2018-01-16 | 张铁民 | A kind of automatic turning rice seedlings machine |
| CN110617289A (en) * | 2019-08-26 | 2019-12-27 | 重庆宏美科技有限公司 | Left-right steering control mechanism |
| CN114396433A (en) * | 2022-01-24 | 2022-04-26 | 西南大学 | Spacing seat, outer sleeve, clutch, left and right clutch brake device and gearbox |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102224782B (en) | 2012-11-14 |
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Address after: No. 618 Pujiang County Hengchang 322200 Avenue in Jinhua city in Zhejiang Province Patentee after: Zhejiang Feng an gear Limited by Share Ltd Address before: 322200 No. 29 Renmin West Road, Pujiang County, Zhejiang, Jinhua Patentee before: Zhejiang Pujiang Gear Co., Ltd. |