CN111271430A - Mechanical hydraulic coupling transmission stepless speed changing box, transmission system and tractor - Google Patents
Mechanical hydraulic coupling transmission stepless speed changing box, transmission system and tractor Download PDFInfo
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- CN111271430A CN111271430A CN202010090682.5A CN202010090682A CN111271430A CN 111271430 A CN111271430 A CN 111271430A CN 202010090682 A CN202010090682 A CN 202010090682A CN 111271430 A CN111271430 A CN 111271430A
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- 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
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
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Abstract
The invention discloses a mechanical hydraulic coupling transmission stepless gearbox, a transmission system and a tractor, which comprise a hydrostatic transmission device, wherein the hydrostatic transmission device is provided with a transmission shaft and an output shaft, the transmission shaft is fixedly connected with a power output transmission shaft, the power output transmission shaft transmits power to an auxiliary gearbox, and a mechanical transmission driving gear is arranged on the periphery of the transmission shaft; the output shaft is fixedly connected with a sun gear shaft, a sun gear is arranged on the periphery of the sun gear shaft and is in meshed transmission with the planetary gear, and a large gear ring is also arranged on the periphery of the sun gear shaft and is simultaneously connected with a mechanical transmission driving gear and the planetary gear.
Description
Technical Field
The utility model belongs to the technical field of tractor gearbox, concretely relates to mechanical hydraulic coupling transmission continuously variable transmission and transmission system and tractor.
Background
When the tractor operates in the field, the conditions that the power of an engine is insufficient due to the fact that the gearbox works at a high gear, and the load is too light due to the fact that the gearbox works at a low gear often occur.
In order to fully utilize the power of an engine, the gear number of a gearbox can only be greatly increased, the operation is complex, and the agricultural machinery walking gearbox in the prior art is used for changing the speed through a gear shifting fork; at present, domestic stepless speed change is mainly applied to automobiles and field operation stepless speed change tractors to find a difficult trail.
Disclosure of Invention
The present disclosure aims to overcome the above disadvantages of the prior art, and provides a mechanical hydraulic coupling transmission stepless transmission case, a transmission system and a tractor; the stepless speed changing box can solve the current situation that the multi-gear operation of a small and medium-sized tractor is too complicated, has simple structure and ensures that the tractor realizes stepless speed regulation.
The first invention of this disclosure is to propose a kind of mechanical hydraulic coupling transmission stepless speed changing box, in order to achieve the above-mentioned purpose, this disclosure adopts the following technical scheme:
a mechanical hydraulic coupling transmission stepless gearbox comprises a hydrostatic transmission device, wherein the hydrostatic transmission device is provided with a transmission shaft and an output shaft, the transmission shaft is fixedly connected with a power output transmission shaft, the power output transmission shaft transmits power to a secondary gearbox, and a mechanical transmission driving gear is arranged on the periphery of the transmission shaft; the output shaft is fixedly connected with a sun gear shaft, a sun gear is arranged on the periphery of the sun gear shaft and is in meshed transmission with the planetary gear, and a large gear ring is also arranged on the periphery of the sun gear shaft and is simultaneously connected with a mechanical transmission driving gear and the planetary gear.
As a further technical scheme, the large gear ring comprises an outer gear portion and an inner ring portion which are connected, the outer gear portion is provided with an outer gear which is in meshing transmission with the mechanical transmission driving gear, and the inner ring portion is provided with an inner gear which is in meshing transmission with the planet gear.
As a further technical solution, the outer gear portion and the inner ring gear portion are integrally molded.
As a further technical scheme, the planet gear is connected with a planet carrier, and the planet carrier is arranged on a sun gear shaft.
As a further technical scheme, the periphery of the sun wheel shaft is also provided with a power transmission driving gear, the periphery of the power output transmission shaft is provided with a power transmission driven gear, and the power transmission driving gear is in meshing transmission with the power transmission driven gear.
As a further technical scheme, the transmission shaft and the output shaft are arranged in parallel.
As a further feature, the hydrostatic transmission also has an input shaft, which is connected to the engine input shaft.
As a further technical scheme, the engine input shaft is connected with a power output shaft of a tractor.
A second object of the present disclosure is to propose a variable speed drive system for a tractor comprising a mechanical-hydraulic coupling drive continuously variable transmission as described above.
A third object of the present disclosure is to propose a tractor comprising a variable speed transmission system as described above.
The beneficial effect of this disclosure does:
the stepless speed change box disclosed by the invention provides a technical scheme of stepless speed change of a tractor, and under the condition of not changing the main transmission structure of the original tractor speed change box, stepless speed change is realized by additionally arranging mechanical and hydraulic elements, so that the tractor can easily deal with complex working conditions under the condition of not shifting gears, and the output power can meet the operation requirement.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of an overall structure of a continuously variable transmission disclosed in one embodiment;
in the figure, 1 engine input shaft, 2 hydrostatic transmission input shaft, 3 hydrostatic transmission, 4 hydrostatic transmission output shaft, 5 hydrostatic transmission shaft, 6 sun gear shaft, 7 sun gear, 8 mechanical transmission driving gear, 9 large gear ring, 10 planetary gear, 11 planet carrier, 12 power transmission driven gear, 13 power transmission driving gear, 14 power transmission shaft, 15 power output transmission shaft and 16 auxiliary gearboxes.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate description of the disclosure and simplify description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the disclosure.
As described in the background of the invention, the prior art has disadvantages, and in order to solve the above technical problems, the present application provides a mechanical hydraulic coupling transmission stepless transmission, a transmission system and a tractor.
The application provides a mechanical hydraulic coupling transmission stepless gearbox, which comprises a hydrostatic transmission device, wherein the hydrostatic transmission device is provided with a transmission shaft and an output shaft, the transmission shaft is fixedly connected with a power output transmission shaft, the power output transmission shaft transmits power to a secondary gearbox, and a mechanical transmission driving gear is arranged on the periphery of the transmission shaft; the output shaft is fixedly connected with a sun gear shaft, a sun gear is arranged on the periphery of the sun gear shaft and is in meshed transmission with the planetary gear, and a large gear ring is also arranged on the periphery of the sun gear shaft and is simultaneously connected with a mechanical transmission driving gear and the planetary gear.
Example 1
The continuously variable transmission disclosed in the present embodiment will be further described with reference to fig. 1;
referring to the attached figure 1, the mechanical hydraulic coupling transmission stepless speed changing box for the tractor comprises an engine input shaft 1, a hydrostatic transmission input shaft 2, a hydrostatic transmission 3, a hydrostatic transmission output shaft 4, a hydrostatic transmission shaft 5, a sun gear shaft 6, a sun gear 7, a mechanical transmission driving gear 8, a large gear ring 9, a planetary gear 10, a planet carrier 11, a power transmission driven gear 12, a power transmission driving gear 13, a shaft sleeve 14, a power output transmission shaft 15 and an auxiliary speed changing box 16;
one end of an engine input shaft 1 is connected with a power output shaft of the tractor, and the other end of the engine input shaft is connected with a hydrostatic transmission input shaft 2 through a splined connection shaft sleeve so as to transmit power; the input shaft 2 of the hydraulic transmission device is connected with the hydrostatic transmission device 3, and the output power of the hydrostatic transmission device 3 is divided into two paths: one path is that a hydrostatic transmission shaft 5 is arranged, the periphery of the hydrostatic transmission shaft 5 is connected with a mechanical transmission driving gear 8 through a shaft sleeve, the hydrostatic transmission shaft 5 is connected with a power output transmission shaft 15, the periphery of the power output transmission shaft 15 is connected with a power transmission driven gear 12 through a shaft sleeve 14, and the power output transmission shaft 15 transmits power to an auxiliary gearbox 16; the other path is provided with a hydrostatic transmission output shaft 4, the hydrostatic transmission output shaft 4 and a hydrostatic transmission shaft 5 are arranged in parallel, the hydrostatic transmission output shaft 4 is connected with a sun gear shaft 6 through a spline sleeve to transmit power, the periphery of the sun gear shaft 6 is connected with a sun gear 7 through a shaft sleeve, the sun gear 7 is in meshing transmission with a planetary gear 10, the planetary gear 10 is connected with a planet carrier 11, the planet carrier 11 and a power transmission driving gear 13 are both arranged on the sun gear shaft 6, the power transmission driving gear 13 is in meshing transmission with a power transmission driven gear 12, a large gear ring 9 is arranged on the periphery of the sun gear shaft 6 and is connected with the sun gear shaft 6 through a bearing, and the large gear ring 9 is simultaneously connected with a mechanical transmission.
The bull gear 9 comprises two parts: the outer gear part and the inner ring part are integrally formed, the outer gear part is in a gear form and is provided with an outer gear which is in meshing transmission with the mechanical transmission driving gear 8, and the inner ring part is in a ring gear form and is provided with an inner gear which is in meshing transmission with the planet gear 10.
The working principle of the continuously variable transmission disclosed by the invention is as follows:
the engine input shaft 1 is connected with a power output shaft of the tractor, is connected with the hydrostatic transmission input shaft 2 through a splined connection shaft sleeve, and transmits the power of the tractor to the hydrostatic transmission 3; the hydrostatic transmission device 3 divides power into two paths for output through internal pressure conversion: one way transmits power to a sun gear shaft 6 through an output shaft 4 of a hydrostatic transmission device, the sun gear shaft 6 drives a sun gear 7 to rotate, the sun gear 7 is meshed with a planetary gear 10, the planetary gear 10 is installed on a planet carrier 11, a large gear ring 9 is respectively meshed with the planetary gear 10 and a mechanical transmission driving gear 8, and the mechanical transmission driving gear 8 is installed on a power output rotating shaft 15, so that the power is transmitted to a gearbox of the tractor; the other path of output: the sun wheel shaft 6 is provided with a power transmission driving gear 13, the power transmission driving gear 13 is meshed with a power transmission driven gear 12, and the power transmission driven gear 12 is arranged on a power output rotating shaft 15 and transmits power to a tractor gearbox. When the stepless speed change device works, the hydrostatic transmission device is adjusted by controlling the rotating speed of the engine and then the pedal, so that stepless speed change is realized.
The disclosure also provides a variable speed transmission system for a tractor, which comprises the mechanical hydraulic coupling transmission continuously variable transmission.
The present disclosure also provides a tractor comprising a variable speed drive system as described above.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A mechanical hydraulic coupling transmission stepless gearbox is characterized by comprising a hydrostatic transmission device, wherein the hydrostatic transmission device is provided with a transmission shaft and an output shaft, the transmission shaft is fixedly connected with a power output transmission shaft, the power output transmission shaft transmits power to a secondary gearbox, and a mechanical transmission driving gear is arranged on the periphery of the transmission shaft; the output shaft is fixedly connected with a sun gear shaft, a sun gear is arranged on the periphery of the sun gear shaft and is in meshed transmission with the planetary gear, and a large gear ring is also arranged on the periphery of the sun gear shaft and is simultaneously connected with a mechanical transmission driving gear and the planetary gear.
2. The mechanical-hydraulic coupling transmission continuously variable transmission of claim 1, wherein the large ring gear comprises an outer gear portion and an inner ring portion which are connected, the outer gear portion has an outer gear to mesh with the mechanical transmission driving gear for transmission, and the inner ring portion has an inner gear to mesh with the planetary gear for transmission.
3. The mechanical-hydraulic coupling transmission continuously variable transmission of claim 2, wherein the outer gear portion and the inner race portion are integrally formed.
4. The mechanical hydraulic coupling transmission continuously variable transmission of claim 1, wherein the planetary gear is connected with a planetary carrier, and the planetary carrier is mounted on a sun gear shaft.
5. The mechanical hydraulic coupling transmission stepless speed changing box according to claim 1, wherein a power transmission driving gear is further arranged on the periphery of the sun wheel shaft, a power transmission driven gear is arranged on the periphery of the power output transmission shaft, and the power transmission driving gear is in meshing transmission with the power transmission driven gear.
6. The electro-hydraulic coupling transmission continuously variable transmission of claim 1, wherein the transmission shaft and the output shaft are arranged in parallel.
7. The electro-hydraulic coupling transmission continuously variable transmission of claim 1, wherein the hydrostatic transmission further comprises an input shaft, the input shaft being connected to the engine input shaft.
8. The electro-hydraulic coupling transmission continuously variable transmission of claim 7, wherein the engine input shaft is connected to a tractor power output shaft.
9. A variable speed drive system for a tractor comprising a mechanical hydraulic coupling transmission continuously variable transmission as claimed in any one of claims 1 to 8.
10. A tractor comprising the variable speed drive system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010090682.5A CN111271430A (en) | 2020-02-13 | 2020-02-13 | Mechanical hydraulic coupling transmission stepless speed changing box, transmission system and tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010090682.5A CN111271430A (en) | 2020-02-13 | 2020-02-13 | Mechanical hydraulic coupling transmission stepless speed changing box, transmission system and tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111271430A true CN111271430A (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010090682.5A Pending CN111271430A (en) | 2020-02-13 | 2020-02-13 | Mechanical hydraulic coupling transmission stepless speed changing box, transmission system and tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111271430A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877424A (en) * | 2020-08-14 | 2020-11-03 | 北方重工集团有限公司 | Active carry scraper |
| CN113175515A (en) * | 2021-06-10 | 2021-07-27 | 温岭市明华齿轮有限公司 | Tractor gearbox |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000351332A (en) * | 1999-06-10 | 2000-12-19 | Kanzaki Kokyukoki Mfg Co Ltd | Transmission for running of vehicle |
| JP2003130174A (en) * | 2001-10-22 | 2003-05-08 | Yanmar Agricult Equip Co Ltd | Transmission system of working vehicle |
| CN2606219Y (en) * | 2003-03-13 | 2004-03-10 | 桑恭 | Hydrostatic transmission of nonpolarized speed variable tractor |
| CN101612889A (en) * | 2009-08-12 | 2009-12-30 | 叶大林 | Hydrostatic drive stepless speed changing tractor |
| EP2319720A1 (en) * | 2008-08-29 | 2011-05-11 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Travelling system transmission structure for vehicle |
| CN202326970U (en) * | 2011-11-14 | 2012-07-11 | 一拖（黑龙江）东方红工业园有限公司 | Planetary gear train drive device of rice transplanting machine |
-
2020
- 2020-02-13 CN CN202010090682.5A patent/CN111271430A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000351332A (en) * | 1999-06-10 | 2000-12-19 | Kanzaki Kokyukoki Mfg Co Ltd | Transmission for running of vehicle |
| JP2003130174A (en) * | 2001-10-22 | 2003-05-08 | Yanmar Agricult Equip Co Ltd | Transmission system of working vehicle |
| CN2606219Y (en) * | 2003-03-13 | 2004-03-10 | 桑恭 | Hydrostatic transmission of nonpolarized speed variable tractor |
| EP2319720A1 (en) * | 2008-08-29 | 2011-05-11 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Travelling system transmission structure for vehicle |
| CN101612889A (en) * | 2009-08-12 | 2009-12-30 | 叶大林 | Hydrostatic drive stepless speed changing tractor |
| CN202326970U (en) * | 2011-11-14 | 2012-07-11 | 一拖（黑龙江）东方红工业园有限公司 | Planetary gear train drive device of rice transplanting machine |
Non-Patent Citations (2)
| Title |
|---|
| 王均刚著: "《行星轮系与多级齿轮传动系统动态性能与传动设计优化研究》", 31 August 2018, 合肥工业大学出版社 * |
| 胜帆，罗志骏编: "《液压技术基础》", 30 September 1985, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877424A (en) * | 2020-08-14 | 2020-11-03 | 北方重工集团有限公司 | Active carry scraper |
| CN113175515A (en) * | 2021-06-10 | 2021-07-27 | 温岭市明华齿轮有限公司 | Tractor gearbox |
| WO2022257188A1 (en) * | 2021-06-10 | 2022-12-15 | 温岭市明华齿轮有限公司 | Tractor transmission |
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Application publication date: 20200612 |
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| RJ01 | Rejection of invention patent application after publication |