JPS5840368Y2 - High/low speed switching device for vehicle running - Google Patents
High/low speed switching device for vehicle runningInfo
- Publication number
- JPS5840368Y2 JPS5840368Y2 JP6032978U JP6032978U JPS5840368Y2 JP S5840368 Y2 JPS5840368 Y2 JP S5840368Y2 JP 6032978 U JP6032978 U JP 6032978U JP 6032978 U JP6032978 U JP 6032978U JP S5840368 Y2 JPS5840368 Y2 JP S5840368Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- planetary
- output shaft
- switching device
- hydraulic clutch
- 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
Links
Landscapes
- Arrangement Of Transmissions (AREA)
Description
【考案の詳細な説明】
本考案は、トラクタ等の車輌における走行用高低速切換
装置に関し、高負荷時に車速を減速してエンジンストッ
プを防止するようにしたものである。[Detailed Description of the Invention] The present invention relates to a high/low speed switching device for traveling in a vehicle such as a tractor, and is designed to reduce the vehicle speed during high loads to prevent engine stoppage.
トラクタ等の車輌では、走行系とは別にＰＴＯ系を備え
、これら両動力系を１個の搭載エンジンで夫々駆動する
ようにしているので、例えば走行状態で作業機を駆動す
る場合等、作業形態によってはエンジンに高負荷が加わ
りやすく、不測にエンジンストップを招くと云う欠点が
あった。Vehicles such as tractors are equipped with a PTO system separate from the drive system, and both of these power systems are driven by a single onboard engine, so it is possible to change the working mode, such as when driving a work machine while the vehicle is running. Depending on the type of engine, a high load is likely to be applied to the engine, which may cause the engine to stop unexpectedly.
本考案はこのような従来の問題点を解消したものであっ
て、その特徴とするところは、走行系中に変速装置を備
えた車輌において、走行系中に、遊星減速機を備えた高
低速切換装置を前記変速装置とは別に設け、遊星減速機
は遊星キャリヤに支持された遊星ギヤーと連動する連動
ギヤーを出力軸に接続するための高速用油圧クラッチと
、遊星キャリヤを出力軸に接続するための低速用油圧ク
ラッチとを備え、この両者油圧クラッチを遊星キャリヤ
の内部に収めかつ軸方向に並設した点にある。The present invention solves these conventional problems, and its feature is that in vehicles equipped with a transmission in the running system, high-low speed transmission with a planetary reducer in the running system A switching device is provided separately from the transmission device, and the planetary reducer includes a high-speed hydraulic clutch for connecting an interlocking gear that interlocks with a planetary gear supported by a planetary carrier to an output shaft, and a high-speed hydraulic clutch for connecting the planetary carrier to the output shaft. Both hydraulic clutches are housed inside the planetary carrier and are arranged side by side in the axial direction.
以下、図示の実施例について本考案を詳述すると、第１
図はダブルクラッチ式トラクタのミッション系を示し、
同図において、１はエンジン、２はＰＴＯクラッチ、３
は走行うラッチで、これらクラッチ２，３は所謂ダブル
クラッチ構造となっており、ＰＴＯクラッチ２はＰＴＯ
系軸４．ＰＴＯ変速装置５を介してＰＴＯ軸６に連動し
、また走行うラッチ３はＰＴＯ系軸４に相対回転自在に
外嵌する走行系軸７を介して主変速装置８に連動する。Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
The figure shows the mission system of a double clutch tractor.
In the same figure, 1 is the engine, 2 is the PTO clutch, and 3 is the engine.
is a running latch, and these clutches 2 and 3 have a so-called double clutch structure, and PTO clutch 2
System axis 4. The running latch 3 is linked to the PTO shaft 6 via the PTO transmission 5 and linked to the main transmission 8 via the running shaft 7 which is fitted onto the PTO shaft 4 so as to be relatively rotatable.
なお主変速装置８は副変速装置９、デフ装置１０等を介
して後輪に連動する。The main transmission 8 is interlocked with the rear wheels via an auxiliary transmission 9, a differential gear 10, and the like.
走行系軸７には第２図に示す如く遊星減速機１１を利用
した高低速切換装置１２が組込まれている。As shown in FIG. 2, a high/low speed switching device 12 using a planetary reduction gear 11 is incorporated in the traveling system shaft 7.
即ち第２図に示す如く走行系軸１は筒軸であって、入力
軸１３と出力軸１４とに前後２分割されており、その入
力軸１３と出力軸１４との間に減速機１１が組込まれて
いる。That is, as shown in FIG. 2, the traveling system shaft 1 is a cylindrical shaft, and is divided into two, front and rear, into an input shaft 13 and an output shaft 14, and a reducer 11 is installed between the input shaft 13 and the output shaft 14. Built-in.
減速機１１は入力軸１３の後端部に固定された太陽ギヤ
ー１５と、出力軸１４側に支持された遊星キャリヤ１６
と、この遊星キャリヤ１６に遊星軸１７を介して軸支さ
れた周方向複数個の遊星ギヤー１８と、クラッチハウジ
ング１９とミッションケース２０との間の遮断隔壁２１
側に設けられた内歯ギヤー２２とを備えて成る。The reducer 11 includes a sun gear 15 fixed to the rear end of the input shaft 13 and a planetary carrier 16 supported on the output shaft 14 side.
, a plurality of circumferentially circumferential planetary gears 18 pivotally supported by the planetary carrier 16 via a planetary shaft 17 , and a blocking partition 21 between the clutch housing 19 and the transmission case 20 .
It is equipped with an internal gear 22 provided on the side.
遊星キャリヤ１６は出力軸１４に遊転自在に套嵌される
と共に、ミッションケース２０の支持壁部２３にボール
軸受２４を介して支持されている。The planet carrier 16 is fitted onto the output shaft 14 so as to be freely rotatable, and is supported by a support wall 23 of the mission case 20 via a ball bearing 24.
遊星ギヤー１８は太陽ギヤー１５及び内歯ギヤー２２に
咬合する小径ギヤー１８ａと、これよりも大径の大径ギ
ヤー１８ｂとを備えた２連ギヤーであって、その大径ギ
ヤー１８ｂに咬合する連動ギヤー２５は出力軸１４の前
端部に遊転自在に套嵌されている。The planetary gear 18 is a double gear that includes a small diameter gear 18a that meshes with the sun gear 15 and the internal gear 22, and a large diameter gear 18b that is larger than the small diameter gear 18a, and is an interlocking gear that meshes with the large diameter gear 18b. The gear 25 is fitted around the front end of the output shaft 14 so as to freely rotate.
遊星キャリヤ１６と連動ギヤー２５は油圧クラッチ２６
．２７により出力軸１４に選択結合されるのであり、そ
の油圧クラッチ２６．２７はピストン２８．２９により
ディスクを挟圧する湿式多板クラッチとされ、また両ピ
ストン２８．２９は出力軸１４に固設された支持体３０
の両側面に設けられている。The planetary carrier 16 and the interlocking gear 25 are connected to a hydraulic clutch 26
．． The hydraulic clutches 26 and 27 are wet-type multi-disc clutches that pinch a disk with pistons 28 and 29, and both pistons 28 and 29 are fixedly connected to the output shaft 14. support 30
are provided on both sides of the
なお各油圧クラッチ２６．２７に対する作動油は、支持
体３０に形成された油路を通り、出力軸１４側の油路（
図示省略）から供給するようになっている。Note that the hydraulic oil for each hydraulic clutch 26, 27 passes through an oil passage formed in the support body 30, and passes through an oil passage (
(not shown).
次に作用を説明する。Next, the action will be explained.
通常の作業時には油圧クラッチ２７を接続しておくので
あるが、この場合、入力軸４が第３図ａ矢示方向に回転
すると、この入力軸４と一体回転する太陽ギヤー１５を
介して遊星ギヤー１８はその小径ギヤー１８ａが内歯ギ
ヤー２２と咬合状態にあるので、ｂ矢示方向へ自転しな
がら遊星キャリヤ１６と共にａ矢示方向へと公転し、ま
た遊星キャリヤ１６は低速回転する。During normal work, the hydraulic clutch 27 is connected, but in this case, when the input shaft 4 rotates in the direction of the arrow a in FIG. Since the small-diameter gear 18a is in mesh with the internal gear 22, the planet carrier 18 revolves in the direction of the arrow A together with the planet carrier 16 while rotating in the direction of the arrow B, and the planet carrier 16 rotates at a low speed.
一方遊星ギヤ−１８の大径ギヤー１８ｂには連動ギヤー
２５が咬合状態にあるので、遊星ギヤー１８が回転する
と、連動ギヤー２５はａ矢示方向へと回転し、その動力
が油圧クラッチ２７を介して出力軸１４へと伝達されて
行き、従って出力軸１４は高速回転状態になり、トラク
タは主変速装置８及び副変速装置９で変速した車速で走
行する。On the other hand, the interlocking gear 25 is engaged with the large diameter gear 18b of the planetary gear 18, so when the planetary gear 18 rotates, the interlocking gear 25 rotates in the direction indicated by the arrow a, and the power is transmitted through the hydraulic clutch 27. The output shaft 14 rotates at a high speed, and the tractor runs at the vehicle speed changed by the main transmission 8 and the auxiliary transmission 9.
このような状態での作業中にエンジン１負荷が高くなる
と、油圧クラッチ２７を切断し、油圧クラッチ２６を接
続して、出力軸１４を高速から約３０％程度低下させた
低速状態で回転させるのであり、これによって主変速装
置８及び副変速装置９側を何等操作することなくトラク
タの車速を落し、エンジン１の負荷を軽減して、エンジ
ンストップを防止することができる。When the load on the engine 1 increases during work in such conditions, the hydraulic clutch 27 is disconnected, the hydraulic clutch 26 is connected, and the output shaft 14 is rotated at a low speed that is about 30% lower than the high speed. As a result, the vehicle speed of the tractor can be reduced without any operation on the main transmission device 8 and the auxiliary transmission device 9 side, the load on the engine 1 can be reduced, and engine stoppage can be prevented.
即ち、遊星キャリヤ１６と連動ギヤー２５との間では連
動ギヤー２５側が高速であり、高速時には前述の如く該
連動ギヤー２５を油圧クラッチ２７で出力軸１４に結合
していたが、低速時には遊星キャリヤ１６を油圧クラッ
チ２６で出力軸１４に結合し、該遊星キャリヤ１６側か
ら出力軸１４へと動力を伝達するので、出力軸１４は低
速回転状態となり、従ってトラクタの車速か低下する。That is, between the planetary carrier 16 and the interlocking gear 25, the interlocking gear 25 side is at high speed, and at high speeds, the interlocking gear 25 is connected to the output shaft 14 by the hydraulic clutch 27 as described above, but at low speeds, the interlocking gear 25 side is connected to the output shaft 14. is connected to the output shaft 14 by the hydraulic clutch 26, and power is transmitted from the planetary carrier 16 side to the output shaft 14, so the output shaft 14 is in a low speed rotation state, and therefore the vehicle speed of the tractor is reduced.
なお減速率は各部のギヤー比によって適宜決定できるが
、トラクタのエンジンストップ防止上は３０％程度が適
当である。The deceleration rate can be appropriately determined by the gear ratio of each part, but approximately 30% is appropriate in order to prevent the tractor engine from stopping.
なお高低速切換装置１２は主変速装置８と副変速装置９
との間等に介装しても良いが、図例のように設ければ、
トルクを小さくできる利点がある。Note that the high/low speed switching device 12 is connected to the main transmission 8 and the auxiliary transmission 9.
It may be installed between the
This has the advantage of reducing torque.
以上実施例に詳述したように本考案によれば、走行系中
に変速装置８，９を備えた車輌において、走行系中に、
遊星減速機１１を備えた高低速切換装置１２を前記変速
装置８，９とは別に設け、遊星減速機１１は遊星キャリ
ヤ１６に支持された遊星ギヤー１８と連動する連動ギヤ
ー２５を出力軸１４に接続するための高速用油圧クラッ
チ２１と、遊星キャリヤ１６を出力軸１４に接続するた
めの低速用油圧クラッチ２６とを備えているので、通常
、高速用油圧クラッチ２７を接続して高速状態としてお
き、エンジン負荷の増大時に、油圧クラッチ２７を切っ
て低速用油圧クラッチ２６を接続すれば、他の変速装置
８，９の煩わしい変速操作をすることなく車速を落して
エンジン負荷を軽減することができ、不測のエンジンス
トップを防止できる。As described above in detail in the embodiments, according to the present invention, in a vehicle equipped with the transmission devices 8 and 9 in the running system, in the running system,
A high-low speed switching device 12 equipped with a planetary reducer 11 is provided separately from the transmission devices 8 and 9, and the planetary reducer 11 has an interlocking gear 25 on the output shaft 14 that interlocks with a planetary gear 18 supported by a planetary carrier 16. Since it is equipped with a high-speed hydraulic clutch 21 for connecting the planetary carrier 16 to the output shaft 14 and a low-speed hydraulic clutch 26 for connecting the planetary carrier 16 to the output shaft 14, the high-speed hydraulic clutch 27 is normally connected to maintain the high-speed state. When the engine load increases, by disengaging the hydraulic clutch 27 and connecting the low-speed hydraulic clutch 26, it is possible to reduce the vehicle speed and reduce the engine load without having to perform troublesome gear shifting operations on the other transmission devices 8 and 9. , can prevent unexpected engine stop.
また油圧クラッチ２６．２７は遊星キャリヤ１６の内部
に収めかつ軸方向に並設しているので、全体をコンパク
トにでき、しかも各油圧クラッチ２６．２７に対する油
路を形成する際の加工等を容易にすることができる。Furthermore, since the hydraulic clutches 26 and 27 are housed inside the planetary carrier 16 and are arranged in parallel in the axial direction, the entire structure can be made compact, and processing when forming oil passages for each hydraulic clutch 26 and 27 is easy. It can be done.
図面は本考案の一実施例を示し、第１図はトラクタミッ
ションの構成図、第２図は要部の断面図、第３図は動作
説明図である。
１・・・・・・エンジン、１１・・・・・・遊星減速機
、１２・・・・・・高低速切換装置、１３・・・・・・
入力軸、１４・・・・・・出力軸、１６・・・・・・遊
星キャリヤ、１８・・・・・・遊星ギヤ、２５・・・・
・・連動ギヤー ２６．２７・・・・・・油圧クラッチ
。The drawings show an embodiment of the present invention; FIG. 1 is a configuration diagram of a tractor transmission, FIG. 2 is a cross-sectional view of the main parts, and FIG. 3 is an explanatory diagram of the operation. 1...Engine, 11...Planetary reducer, 12...High/low speed switching device, 13...
Input shaft, 14... Output shaft, 16... Planet carrier, 18... Planet gear, 25...
...Interlocking gear 26.27...Hydraulic clutch.
Claims (1)
系中に、遊星減速機１１を備えた高低切換装置１２を前
記変速装置８，９とは別に設け、遊星減速機１１は遊星
キャリヤ１６に支持された遊星ギヤー１８と連動する連
動ギヤー２５を出力軸１４に接続するための高速用油圧
クラッチ２７と、遊星キャリヤ１６を出力軸１４に接続
するための低速用油圧クラッチ２６とを備え、この両者
油圧クラッチ２６．２７を遊星キャリヤ１６の内部に収
めかつ軸方向に並設したことを特徴とする車輌の走行用
高低速切換装置。In a vehicle equipped with a transmission 8.9 in the running system, a height switching device 12 equipped with a planetary reduction gear 11 is provided in the running system separately from the transmissions 8 and 9, and the planetary reduction gear 11 is connected to a planetary carrier. A high-speed hydraulic clutch 27 for connecting an interlocking gear 25 interlocking with the planetary gear 18 supported by the planetary gear 16 to the output shaft 14, and a low-speed hydraulic clutch 26 for connecting the planetary carrier 16 to the output shaft 14. A high-low speed switching device for running a vehicle, characterized in that both hydraulic clutches 26 and 27 are housed inside the planetary carrier 16 and are arranged side by side in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6032978U JPS5840368Y2 (en) | 1978-05-04 | 1978-05-04 | High/low speed switching device for vehicle running |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6032978U JPS5840368Y2 (en) | 1978-05-04 | 1978-05-04 | High/low speed switching device for vehicle running |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54161875U JPS54161875U (en) | 1979-11-13 |
| JPS5840368Y2 true JPS5840368Y2 (en) | 1983-09-10 |
Family
ID=28960757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6032978U Expired JPS5840368Y2 (en) | 1978-05-04 | 1978-05-04 | High/low speed switching device for vehicle running |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5840368Y2 (en) |
-
1978
- 1978-05-04 JP JP6032978U patent/JPS5840368Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54161875U (en) | 1979-11-13 |
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