Shifting transmission device

A technology of variable speed transmission and variable speed section, which is applied to transmission devices, gear transmission devices, fluid transmission devices, etc., can solve problems such as unstable speed change action, and achieve the effect of high speed change performance and output performance, and it is not easy to change speed.

Active Publication Date: 2009-05-13
KUBOTA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, even if some clutches are switched to a predetermined operating state, but other clutches are not switched to a predetermined operating state, sometimes the first speed appears before the shift output part is switched to the operating state in which the second speed range or the third speed range appears. range or four-speed range operating conditions where erratic shifting action occurs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] FIG. 1 is a line diagram of a variable speed transmission 3 according to Embodiment 1. As shown in FIG. The speed change transmission device 3 of the first embodiment is mounted on a travel transmission device provided in a work vehicle such as a tractor.

[0071] The traveling transmission includes the main clutch 2 into which the output from the output shaft 1a of the engine 1 is input, the input shaft 21 and the above-mentioned speed change transmission 3 linked with the output shaft 2a of the main clutch 2, the input shaft 31 and the transmission gear 4a, 4b and The forward and reverse switching device 30 linked by the output shaft 70 of the speed change transmission device 3, the rear wheel differential mechanism 5 linked by the input gear 5a and the output shaft 32 of the forward and reverse switching device 30, and the above-mentioned forward and reverse via transmission gears 6a and 6b. The output shaft 7 for front wheels interlocked with the output shaft 32 of ...

Embodiment 2

[0104] FIG. 6 is a line diagram of the speed change transmission device 103 of the second embodiment. Here, the same reference numerals are used for the same components as those in Embodiment 1, and the description will not be repeated basically. The speed change transmission device 103 of the second embodiment is equipped on a travel transmission device provided in a tractor. This travel transmission includes a main clutch 2 into which the output from the output shaft 1 a of the engine 1 is input, the above-mentioned speed change transmission 103 into which the output from the main clutch 2 is input, and a forward drive coupled with the output shaft 170 of the speed change transmission 103 . The reverse switching device 30 , the rear wheel differential mechanism 5 interlocked with the output shaft 32 of the forward and reverse switching device 30 , and the front wheel differential mechanism 9 interlocked with the output shaft 32 of the forward and reverse switching device 30 ...

Embodiment 3

[0130] FIG. 10 is a line diagram of the speed change transmission 3 of the third embodiment. This traveling transmission includes a main clutch 2 into which the output from the output shaft 1a of the engine 1 is input, the above-mentioned speed change transmission 3 into which the output from the main clutch 2 is input, and an output rotating body which is the output of the speed change transmission 3 . The forward-backward switching device 30 linked with the shaft 70, the rear wheel differential mechanism 5 linked with the output shaft 32 of the forward-backward switching device 30, and the front wheel differential mechanism 9 linked with the output shaft 32 of the forward-backward switching device 30 .

[0131] Comparing the traveling transmission equipped with the speed change transmission 3 of Example 3 with the traveling transmission equipped with the speed change transmission 3 of Example 2, it is found that the main clutch 2, the forward / reverse switching device 30, and...

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PUM

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Abstract

A shifting and power transmission device having a hydrostatic stepless shifting section (20) into which the output of an engine (1) is inputted; a planetary power transmission section (3a) having planetary power transmission mechanisms (PF, PR) for combining drive force outputted from the hydrostatic stepless shifting section (20) and engine drive force not subjected to a shifting action by the hydrostatic stepless shifting section (20) and also having output members (41, 42); and a shifting and output section (3b) having an output shaft (70) and outputting the combined drive force, outputted from the output members (41, 42), in multiple speed ranges from the output shaft (70). The shifting and output section (3b) has power transmission mechanisms (71-74) arranged between the output shaft (70) and the output members (41, 42) and also has clutches (CL1-CL4) arranged corresponding to the power transmission mechanisms, respectively.

Description

technical field [0001] The present invention relates to a variable speed transmission device. The variable speed transmission device comprises: a hydrostatic continuously variable transmission unit into which the output of an engine is input; a planetary transmission unit having a plurality of planetary transmission mechanisms and a plurality of output members, the a planetary transmission mechanism for synthesizing the driving force output from the hydrostatic continuously variable transmission part and the engine driving force not subjected to the shifting action of the above hydrostatic continuously variable transmission part; Combined drive forces output from the plurality of output members are output from the output shaft in a plurality of speed ranges. Background technique [0002] In order to illustrate the advantages of the present invention and compare it with the present invention, the structure of the invention of Japanese application No. 2005-286073 filed by the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H47/04
CPCF16H2200/2007F16H2037/0886F16H2200/0043F16H2200/201F16H47/04F16H3/006B60K17/28F16H2200/0004B60K17/02F16H3/76
Inventor 上田吉弘片山良行森田慎一
Owner KUBOTA CORP
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