JPS6277221A - Traveling speed changer - Google Patents

Traveling speed changer

Info

Publication number
JPS6277221A
JPS6277221A JP21769185A JP21769185A JPS6277221A JP S6277221 A JPS6277221 A JP S6277221A JP 21769185 A JP21769185 A JP 21769185A JP 21769185 A JP21769185 A JP 21769185A JP S6277221 A JPS6277221 A JP S6277221A
Authority
JP
Japan
Prior art keywords
speed
transmission
clutch
hydraulic
change
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.)
Granted
Application number
JP21769185A
Other languages
Japanese (ja)
Other versions
JPH0378286B2 (en
Inventor
Teruo Minami
照男 南
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP21769185A priority Critical patent/JPS6277221A/en
Publication of JPS6277221A publication Critical patent/JPS6277221A/en
Publication of JPH0378286B2 publication Critical patent/JPH0378286B2/ja
Granted legal-status Critical Current

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  • Arrangement Of Transmissions (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

PURPOSE:To improve operability of a traveling speed changer by providing a controlling valve for a hydraulic clutch at the auxiliary speed changer side to be interlocked with a change-over mechanism of a mechanical clutch mechanism. CONSTITUTION:An auxiliary speed change gear 16 has a low speed gear mechanism 3 capable of changing speed due to the selective turning-in and-out operation of hydraulic clutches 6a, 6b and a high speed gear mechanism 5 capable of turning-in and-out by a mechanical clutch mechanism 4. And a 4-position change-over controlling valve 25 for hydraulic clutches 6a, 6b is provided in a change-over mechanism 33 interposed in a pressurized oil supply circuit and including an auxiliary speed change switching lever 24. Said valve 25 can be changed over to low and middle speed positions by changing over the clutch mechanism 4. Thus, only by operating the change-over mechanism can be turned-in and-out the high speed gear mechanism 5 while the hydraulic clutches 6a, 6b can be turned-in and-out.

Description

【発明の詳細な説明】 [産業上の利用分野〕 本発明は例えばコンバイン等に搭載されて使用されるも
ので、詳しくは複数個の常咬式ギヤ機構に対して夫々設
けられた複数個の油圧クラッチに対して択一的に圧油を
供給して複数段の変速操作が可能な主変速装置と、複数
段に変速可能な副変速装置とを直列に設けてある走行変
速装置に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention is used, for example, by being mounted on a combine harvester. The present invention relates to a traveling transmission in which a main transmission capable of performing multi-speed gear shifting operations by selectively supplying pressure oil to a hydraulic clutch and a sub-transmission capable of multi-stage shifting are provided in series.

〔従来の技術] この種の走行変速装置において、従来は、副変速装置を
構成するに、8つのギヤ部を有するギヤ式シフトスリー
ブとこのギヤ式シフトスリーブに択一的に咬合する8つ
のギヤを同一伝動軸上に設けていた(例えば実開昭59
−131321号公報)。
[Prior Art] Conventionally, in this type of traveling transmission, the auxiliary transmission includes a gear type shift sleeve having eight gear parts and eight gears that selectively mesh with the gear type shift sleeve. were installed on the same transmission shaft (for example,
-131321 publication).

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、低速走行状態にある作業走行時には作業者に要
求される操作が走行変速操作だけでなく、コンバイン等
であれば脱穀・刈取りラッチ操作及び刈取部の昇降操作
をも含んでいる為に、操作が煩雑になっていた。 その
上に、作業走行時における副変速の切換操作は、副変速
がシフトスリーブを介して切換伝動するようになってい
るので、主クラッチを切操作し乍らの変速操作にならざ
るを得す、一層操作を煩雑にしていた。
However, when traveling for work at low speeds, the operations required of the operator are not only to change the travel gear, but also to operate the threshing and reaping latch in the case of a combine harvester, as well as to raise and lower the reaping section. was becoming complicated. In addition, the switching operation of the auxiliary gear while driving for work requires the main clutch to be disengaged as the auxiliary gear transmits the switching transmission through the shift sleeve. , which made the operation even more complicated.

更に、この副変速装置を変速操作するには主クラッチを
切操作しなければならず、しかも、副変速装置の低速域
では作業走行速度として路上走行速度に比べて低速に設
定されているので、クラッチ操作をする毎に瞬間的に機
体が停止する状態になシ、再度クラッチが継ったときに
変速走行速度に戻ることになり、その間の速度差が大で
変速ショックが大きくなっていた。
Furthermore, in order to shift the sub-transmission, the main clutch must be disengaged, and furthermore, in the low-speed range of the sub-transmission, the working speed is set to be lower than the road speed. Every time the clutch was operated, the aircraft would momentarily stop, and when the clutch was engaged again, it would return to the geared traveling speed, and the speed difference between them was large, resulting in a large gearshift shock.

本発明の目的はクラッチ機構の変更によって、変速操作
を容易迅速にかつショック少なく変速操作を行なえるも
のを、より安全性を高めた状態で設けるとともに、操作
系と圧力制御系との兼用構成によって構造の簡素化を図
れるものを提供する点にある。
The purpose of the present invention is to provide a gear shifting operation that can be performed easily, quickly, and with less shock by changing the clutch mechanism, and with improved safety. The point is to provide something that can simplify the structure.

〔問題点を解決するための手段〕 本発明による特徴構成は前記副変速装置を、機械式クラ
ッチ機構によって入切可能な高速ギヤ機構と、複数個の
油圧クラッチに対して択一的に圧油を供給して複数段の
変速操作が可能な常咬式の低速ギヤ機構とで構成すると
ともに、副変速装置側の油圧クラッチに対する制御バル
ブを、前記機械式クラッチ機構の切換操作機構に連動さ
せてある点にあり、その作用効果は次の通りである。
[Means for Solving the Problems] The characteristic configuration according to the present invention is that the sub-transmission device includes a high-speed gear mechanism that can be turned on and off by a mechanical clutch mechanism, and a hydraulic oil clutch that can be selectively connected to a plurality of hydraulic clutches. and a constant-bit type low-speed gear mechanism that is capable of performing multi-speed gear change operations by supplying a constant speed gear, and a control valve for the hydraulic clutch on the sub-transmission side is linked to the switching operation mechanism of the mechanical clutch mechanism. There are certain points, and its effects are as follows.

〔作 用〕[For production]

つまシ、副変速装置を作業走行時に対応した複数段の低
速ギヤ機構と路上走行に対応した高速ギヤ機構とに分離
して、低速ギヤ機構に対して油圧クラッチ機構を採用す
ることによって、低速走行状態である作業走行時であっ
てもノンクラッチ変速操作が可能であるから、変速ショ
ックを十分に抑えたものにでき、かつ、その為の変速操
作も変速操作レバーを操作するだけのワンタッチ操作で
よい。
By separating the auxiliary transmission into a multi-stage low-speed gear mechanism suitable for work driving and a high-speed gear mechanism suitable for road driving, and by adopting a hydraulic clutch mechanism for the low-speed gear mechanism, low-speed driving is possible. Since non-clutch gear shifting is possible even when driving under the condition of work, gear shifting shock can be sufficiently suppressed, and gear shifting can be done with one-touch operation by simply operating the gear shifting lever. good.

しかも、路上走行等の高速走行に変速操作する場合には
、高速ギヤ機構を入切するに機械式クラッチ機構を操作
しなければならないので、低速状態から高速状態に或い
は反対状態に切換える場合には主クラッチを一旦切った
状態で入切操作しなければならない。 従って、この高
速状態への移行に際しては操作は煩雑になるが作業者の
明確な意識を要求することになるので、不測な高速状態
への移行を防止できる、一方、機械式クラッチ機構を操
作する切換操作機構が高速ギヤ機構を入切する際に変速
操作方向に正逆作動するシフトフォーク等の部材を有し
ている点に着目して、この切換操作機構と低速ギヤ機構
に対する油圧クラッチへの制御バルブへの操作系とを連
動させることによって、この切換操作機構を操作するだ
けで高速ギヤ機構の入切と同時に油圧クラッチの入切も
同時に行なえる。
Moreover, when changing gears for high-speed driving such as on the road, a mechanical clutch mechanism must be operated to engage and disengage the high-speed gear mechanism, so when changing from a low-speed state to a high-speed state or vice versa, The main clutch must be turned off before turning on and off. Therefore, when shifting to this high-speed state, the operation is complicated, but requires clear awareness from the operator, so it is possible to prevent an unexpected shift to the high-speed state.On the other hand, it is difficult to operate the mechanical clutch mechanism. Focusing on the fact that the switching operation mechanism has members such as a shift fork that operate in forward and reverse directions in the shifting operation direction when switching on and off the high-speed gear mechanism, we developed a hydraulic clutch for this switching operation mechanism and the low-speed gear mechanism. By linking the control valve with the operating system, it is possible to simultaneously turn on and off the high-speed gear mechanism and the hydraulic clutch simply by operating this switching operation mechanism.

(発明の効果」 その結果、伝動系における作業走行速度に対応した低速
度域に対しては油圧クラッチを介装して操作容易迅速化
を図るとともに、高速度域に対しては機械式クラッチ機
構を採用して誤操作の防止を図シ乍ら安全性を確保しで
ある。
(Effects of the invention) As a result, a hydraulic clutch was installed in the transmission system for the low speed range corresponding to the working speed, making it easier and faster to operate, and a mechanical clutch mechanism was used for the high speed range. This is to ensure safety while preventing erroneous operation.

そして、前記制御バルブの操作機構と切換操作機構とを
連動させることによって、制御バルブの操作機構と別体
構成したものに比べて、制御バルブに対する操作レバー
等のものが省略できて、機器構成が簡素化できるととも
に、それだけ設置スペースが省略できる。 しかも、操
作レバーを持ちかえる手間がいらず、かつ、−回の操作
でよいので操作性が良好になる。
By linking the control valve operation mechanism and the switching operation mechanism, compared to a case where the control valve operation mechanism is configured separately, the operation lever for the control valve can be omitted, and the equipment configuration can be simplified. It can be simplified and the installation space can be saved accordingly. In addition, there is no need to change the operating lever, and only -times of operation are required, resulting in good operability.

し実施例] コンバインに使用される走行変速装置を説明する。Examples] A traveling transmission device used in a combine harvester will be explained.

第1図は伝動系の概略を示し、走行車体に搭載したエン
ジン(8)からの出力は、脱穀装置(2)への伝動系と
走行用及び刈取部駆動用の伝動系に分岐される。 後者
の分岐出力は、走行ミッションケース(9)の入力軸Q
Qにテンジョンクラッチ式の走行うラッチQl)を介し
てベルト伝達されたのち、更に走行系と刈取部伝動系と
に分岐されるO つまり、入力軸αりの動力の一部は、ギヤ変速装&(2
)を介してPTO軸03に取出され、ここからテンショ
ンクラッチ式の刈取りラッチQ4)’fr介して刈取部
(7)の入力軸−にベルト伝達される。
FIG. 1 shows an outline of the transmission system, and the output from the engine (8) mounted on the traveling vehicle body is branched into a transmission system to the threshing device (2) and a transmission system for traveling and driving the reaping section. The latter branch output is connected to the input shaft Q of the traveling mission case (9).
After being transmitted to Q via a tension clutch-type traveling latch Ql), the power is further branched to the traveling system and the reaping section transmission system. Sou & (2
) is taken out to the PTO shaft 03, and from there is transmitted to the input shaft of the reaping section (7) by a belt via a tension clutch type reaping latch Q4)'fr.

又、ミッションケース入力軸QOの動力の一部は、3段
の副変速装置cte、前進3段後進1段の主変速装置α
η及び操向クラッチ(ト)、(至)を経て左右の車軸0
1.四に伝達されるようになっている。
In addition, a part of the power of the mission case input shaft QO is supplied to a 3-speed auxiliary transmission CTE and a main transmission α with 3 forward speeds and 1 reverse speed.
η and steering clutch (G), (to) left and right axle 0
1. It is designed to be transmitted to four people.

主変速装置aηは、各変速段をなす常咬式ギヤ機構−の
伝動系に多板式油圧クラッチ(goa)。
The main transmission device aη has a multi-disc hydraulic clutch (GOA) in the transmission system of the regular gear mechanism that forms each gear stage.

(20b)、(20c)、(20d)を夫々組込み、こ
れら油圧クラッチ(20a) 、 (20b)・・に、
ミッションケース(9)のPTO@l]o3に連動連結
された油圧ポンプ翰からの圧油を、択一的に供給して、
所望の変速段での伝動を行う油圧操作式走行変速装置に
構成されている。
(20b), (20c), (20d) are respectively incorporated into these hydraulic clutches (20a), (20b)...
Alternatively, pressurized oil is supplied from the hydraulic pump handle connected to PTO@l]o3 of the mission case (9),
It is configured as a hydraulically operated traveling transmission that performs transmission at a desired gear position.

この主変速装置αηの操作は、第2図に示す、クラッチ
操作用油圧回路(a)に組込んだ制御弁(財)の操作の
みによって行う。
The main transmission αη is operated only by operating a control valve incorporated in the clutch operating hydraulic circuit (a) shown in FIG.

つまり、主変速用操作レバー(7)によって、制御弁ぐ
υ管(Fx )、(F2)、(F3)及び四)のポジシ
ョンに切換えることによって、前進1速用油圧クラツチ
(20a)、前進2速用油圧クラッチ(20b)、前進
3速用油圧クラッチ(20c)及び後進用油圧クラッチ
(20d)に、油圧ポンプに)からの圧油を択一的に供
給して、クラッチ入り状態の伝動系の変速状態が得られ
、かつ、制御弁Q1Jを(Nのポジションに切換えるこ
とで全油圧クラッチ(20m)。
That is, by switching the control valves to the positions of the control valves υ pipes (Fx), (F2), (F3) and Pressure oil from the hydraulic pump is selectively supplied to the forward speed hydraulic clutch (20b), the forward third speed hydraulic clutch (20c), and the reverse hydraulic clutch (20d), and the transmission system is in a clutch engaged state. By switching the control valve Q1J to the (N position), a fully hydraulic clutch (20 m) can be obtained.

(20b)・・の圧油を抜いて伝動を断ちきって中立停
止状態が得られるのである。 又、前記制御弁?υの一
次側にはモジュレーティングバルブ(2)が接続されて
いて、中立位置から変速操作されたときのクラッチ作動
圧の急激な上昇を抑制して、発進のショック緩和が図ら
れている。
By removing the pressure oil from (20b)..., the transmission is cut off and a neutral stopped state is obtained. Also, the control valve mentioned above? A modulating valve (2) is connected to the primary side of υ, which suppresses the sudden increase in clutch operating pressure when the gear is shifted from the neutral position, thereby alleviating the shock of starting.

副変速装置αQについて詳述する。 第1図に示すよう
に、前記入力軸αQとこの入力軸αQに対向する第1伝
動軸(1)との間に、油圧クラッチ(6m) 、 (6
b)の択−入切作動によって二段に変速可能な常咬式の
低速ギヤ機構(3)と機械式クラッチ機構(4)として
のクラッチスリーブによって入切可能な高速ギヤ機構(
5)とを設けてある1、 前記クラッチスリーブ(4)
は前記入力軸QQに遊嵌された高速ギヤ(5a)と2つ
のギヤ部を有する低速ギヤ(8a)との間に位置し、副
変速切換レバー■の切換操作に連動して、前記低速ギヤ
(s&)と咬合する中・低速状態、高低速ギヤ(3Jl
)、(5m)何れにも咬合しない中立状態、高速ギヤ(
5&)と咬合する高速状態に切換わるべく入力軸oQ上
を摺動作動する。 そして、前記クラッチスリーブ(4
)を中・低速に切換えることによって、前記油圧ポンプ
脅から制御弁eυへの圧油供給回路内に介装された4位
置切換制御バルブ(至)を低・中速位置に切換えること
ができる。 ただし、前記4位置切換バルブμsは中速
位置例と高速位置(H)との間に絞υ機構を設けた中立
位置(N)を設け、この中立位ff1cN)で油圧クラ
ッチ(6B) 、 (6b)の圧油を解放するとともに
、モジュレーティングバルブ(財)の圧油を解放するよ
うにしである。
The sub-transmission device αQ will be explained in detail. As shown in FIG. 1, hydraulic clutches (6 m), (6
Choice b) - A permanent low-speed gear mechanism (3) that can be shifted into two stages by turning on and off, and a high-speed gear mechanism (4) that can be turned on and off using a clutch sleeve as a mechanical clutch mechanism (4).
5) and 1, said clutch sleeve (4).
is located between the high speed gear (5a) which is loosely fitted on the input shaft QQ and the low speed gear (8a) having two gear parts, and is connected to the switching operation of the auxiliary gear changeover lever (■). Medium/low speed state meshing with (s&), high/low speed gear (3Jl
), (5m) Neutral state without interlocking with anything, high-speed gear (
It slides on the input shaft oQ in order to switch to the high speed state where it engages with the input shaft oQ. Then, the clutch sleeve (4
) can be switched to the low/medium speed position, the 4-position switching control valve (to) interposed in the pressure oil supply circuit from the hydraulic pump to the control valve eυ can be switched to the low/medium speed position. However, the 4-position switching valve μs has a neutral position (N) with a throttle υ mechanism provided between the medium speed position and the high speed position (H), and at this neutral position ff1cN), the hydraulic clutch (6B), ( At the same time as releasing the pressure oil of 6b), the pressure oil of the modulating valve is also released.

前記4位置切換制御バルブ(7)は前記副変速切換レバ
ー(ハ)を含む切換操作機構□□□内に設けられておシ
、その詳細な構造は次の通シである。
The four-position switching control valve (7) is provided in the switching operation mechanism □□□ including the sub-shift switching lever (c), and its detailed structure is as follows.

第8図及び第4図に示すように、副変速切換レバー(ハ
)を横軸心(3)周りで上下揺動可能に枢支するととも
に、縦軸心(ト)周りで水平揺動可能なリンク機構gf
jを介してシフトフォーク(ロ)を摺動操作するように
副変速切換レバー■と連係しである。 このシフトフォ
ーク(財)にビン(至)を介して連動連結され、かつミ
ッションケース(9)壁厚内にシフトフォーク翰の摺動
方向に沿った方向に摺動可能なスプール(ハ)を支承す
るとともに、スプール(ト)との相対摺動部(b)であ
るミッションケース(9)壁内に油路(9@)を形成し
て、前記4位置切換制御バルブ(7)を構成しである。
As shown in Figures 8 and 4, the auxiliary gear change lever (c) is pivoted so that it can swing vertically around the horizontal axis (3), and can swing horizontally around the vertical axis (g). link mechanism gf
The shift fork (b) is linked to the auxiliary gear changeover lever (■) so as to slide the shift fork (b) through the lever (j). A spool (c) is interlocked with this shift fork (goods) via a pin (to) and supports a spool (c) that is slidable in a direction along the sliding direction of the shift fork blade within the wall thickness of the mission case (9). At the same time, an oil passage (9@) is formed in the wall of the mission case (9), which is a relative sliding part (b) with the spool (T), to constitute the four-position switching control valve (7). be.

 前記4位置切換制御バルブ(イ)のボートは、図示す
るように、第1タンクボート(T1)、中速用油圧クラ
ッチ(6a)へのボート…、ポンプボート(P)、低速
用油圧クラッチ(6いへのボート(2)、第2タンクボ
ー ) (T2)の順に形成され、前記シフトフォーク
@と連動連結されたスプール(ハ)によって連通切換可
能に構成されている。
As shown in the figure, the boats for the 4-position switching control valve (A) include a first tank boat (T1), a boat for the medium-speed hydraulic clutch (6a), a pump boat (P), and a low-speed hydraulic clutch ( A second tank boat (2) and a second tank boat (T2) are formed in this order, and are configured to be able to be communicated and switched by a spool (c) that is interlocked with the shift fork.

尚、図中(2)はモジュレーティングバルブ翰への連通
ボートである。
Note that (2) in the figure is a communication boat to the modulating valve wire.

c別実施例〕 ■ 第5図及び第6図に示すように、前記4位置切換バ
ルブ曽は、前記縦軸心(1)周りで水平揺動可能なリン
ク機構(1)内に設けてもよい。
c Different embodiment] ■ As shown in FIGS. 5 and 6, the 4-position switching valve may be provided in a link mechanism (1) that is horizontally swingable around the vertical axis (1). good.

つまり、縦軸四に対して円板状のスプール(至)を嵌着
するとともに、このスプール(至)K対して相対摺動す
るカバ一体6υに前記したボート(Tl)、中、 fP
) 、低、 (T2)を設けて4位置切換バルブ(7)
を構成しである。
That is, a disc-shaped spool (to) is fitted to the vertical axis 4, and the above-mentioned boat (Tl), middle, fP is attached to the cover integrally 6υ that slides relative to this spool (to) K.
), low, (T2) and 4-position switching valve (7)
It consists of:

@ 上記構成のものはコンバイン以外の他の農用作業車
、又は、−膜束に適用可能である。
@ The above structure can be applied to other agricultural vehicles other than combines, or to membrane bundles.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明に係る走行変速装置の実施例を示し、第1
図は全体構成図、第2図は油圧回路図、第3図は制御バ
ルブの断面図、第4図は機械式クラッチ機構に対する切
換操作機構を示す斜視図、第5図及び第6図は夫々第3
図、第4図に対応する別実施例を示すもので、制御バル
ブの断面図、及び、機械式クラッチ機構に対する切換操
作機構を示す斜視図である。 (3)・・・・・・低速ギヤ機構、(4)・・・・・機
械式クラッチ機構、(5)・・・・・・高速ギヤ機構、
(6a)・油圧クラッチ、qe・・・・・・副変速装置
、CI力・・・・・・主変速装置、(20a)・・・・
・油圧クラッチ、@・・・・・・制御バルブ、Q・・・
・・切換操作機構、(ロ)・・・・・・ギヤ機構、fb
)・・・・・相対摺動部。 代理人  弁理士   北  村     修票 2 
図 笥 3(2) t!J4@
The drawings show an embodiment of the traveling transmission according to the present invention, and the first
The figure is an overall configuration diagram, Figure 2 is a hydraulic circuit diagram, Figure 3 is a sectional view of a control valve, Figure 4 is a perspective view showing a switching mechanism for a mechanical clutch mechanism, Figures 5 and 6 are respectively Third
FIG. 4 shows another embodiment corresponding to FIG. 4, and is a sectional view of a control valve and a perspective view showing a switching operation mechanism for a mechanical clutch mechanism. (3)...Low speed gear mechanism, (4)...Mechanical clutch mechanism, (5)...High speed gear mechanism,
(6a) Hydraulic clutch, qe... Sub-transmission, CI force... Main transmission, (20a)...
・Hydraulic clutch, @... Control valve, Q...
...Switching operation mechanism, (b)...Gear mechanism, fb
)...Relative sliding part. Agent Patent Attorney Shusei Kitamura 2
Illustration 3 (2) t! J4@

Claims (1)

【特許請求の範囲】[Claims] 複数個の常咬式ギヤ機構(34)に対して夫々設けられ
た複数個の油圧クラッチ(20a)・・・に対して択一
的に圧油を供給して複数段の変速操作が可能な主変速装
置(17)と、複数段に変速可能な副変速装置(16)
とを直列に設けてある走行変速装置において、前記副変
速装置(16)を、機械式クラッチ機構(4)によつて
入切可能な高速ギヤ機構(5)と、複数個の油圧クラッ
チ(6a)、(6b)に対して択一的に圧油を供給して
複数段の変速操作が可能な常咬式の低速ギヤ機構(3)
とで構成するとともに、副変速装置側の油圧クラッチ(
6a)、(6b)に対する制御バルブ(25)を、前記
機械式クラッチ機構(4)の切換操作機構(33)に連
動させてある走行変速装置。
Pressure oil is selectively supplied to a plurality of hydraulic clutches (20a) provided respectively to a plurality of permanent-bite gear mechanisms (34), thereby enabling multi-stage speed change operation. Main transmission (17) and sub-transmission (16) that can be shifted to multiple stages
A traveling transmission in which the auxiliary transmission (16) is connected to a high-speed gear mechanism (5) that can be turned on and off by a mechanical clutch mechanism (4), and a plurality of hydraulic clutches (6a ) and (6b), a permanent-bit type low-speed gear mechanism (3) that can selectively supply pressure oil to perform multi-speed gear shifting operations.
It consists of a hydraulic clutch on the sub-transmission side (
A traveling transmission in which control valves (25) for 6a) and 6b are interlocked with a switching mechanism (33) of the mechanical clutch mechanism (4).
JP21769185A 1985-09-30 1985-09-30 Traveling speed changer Granted JPS6277221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21769185A JPS6277221A (en) 1985-09-30 1985-09-30 Traveling speed changer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21769185A JPS6277221A (en) 1985-09-30 1985-09-30 Traveling speed changer

Publications (2)

Publication Number Publication Date
JPS6277221A true JPS6277221A (en) 1987-04-09
JPH0378286B2 JPH0378286B2 (en) 1991-12-13

Family

ID=16708207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21769185A Granted JPS6277221A (en) 1985-09-30 1985-09-30 Traveling speed changer

Country Status (1)

Country Link
JP (1) JPS6277221A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010004855A1 (en) 2008-07-10 2010-01-14 株式会社 日立メディコ Mobile x-ray apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50121021A (en) * 1974-02-28 1975-09-22
JPS5651374A (en) * 1979-10-01 1981-05-08 Ricoh Co Ltd Printing pressure control device
JPS5654102U (en) * 1979-10-04 1981-05-12
JPS57194948U (en) * 1981-06-05 1982-12-10
JPS5890832U (en) * 1981-12-15 1983-06-20 ヤンマーディーゼル株式会社 Agricultural tractor gearbox
JPS60103727U (en) * 1983-12-20 1985-07-15 株式会社 神崎高級工機製作所 Hydraulic clutch transmission

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50121021A (en) * 1974-02-28 1975-09-22
JPS5651374A (en) * 1979-10-01 1981-05-08 Ricoh Co Ltd Printing pressure control device
JPS5654102U (en) * 1979-10-04 1981-05-12
JPS57194948U (en) * 1981-06-05 1982-12-10
JPS5890832U (en) * 1981-12-15 1983-06-20 ヤンマーディーゼル株式会社 Agricultural tractor gearbox
JPS60103727U (en) * 1983-12-20 1985-07-15 株式会社 神崎高級工機製作所 Hydraulic clutch transmission

Also Published As

Publication number Publication date
JPH0378286B2 (en) 1991-12-13

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