JPH0472077U - - Google Patents
Info
- Publication number
- JPH0472077U JPH0472077U JP11695590U JP11695590U JPH0472077U JP H0472077 U JPH0472077 U JP H0472077U JP 11695590 U JP11695590 U JP 11695590U JP 11695590 U JP11695590 U JP 11695590U JP H0472077 U JPH0472077 U JP H0472077U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- oil
- piston
- small
- hydraulic
- 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.)
- Pending
Links
- 230000008602 contraction Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Harvester Elements (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Description
図面は本考案に係る作業車の走行操作構造の実
施例を示し、第１図は操作系統図、第２図は作動
状態を示す断面図、第３図はコンバインの前部の
側面図である。
７……クラツチ、８……ブレーキ、１０……油
圧シリンダ、１３……マスターシリンダ、１４…
…油圧ピストン、１４ａ……小径ピストン部、１
５……ピストンロツド、１６……シリンダ本体、
１６ａ……小径内筒部、１６ｂ……大径内筒部、
１７……弁機構、ｌ……油路、Ｓ……空間。
The drawings show an embodiment of the traveling operation structure for a working vehicle according to the present invention, and FIG. 1 is an operation system diagram, FIG. 2 is a sectional view showing the operating state, and FIG. 3 is a side view of the front part of the combine harvester. . 7...Clutch, 8...Brake, 10...Hydraulic cylinder, 13...Master cylinder, 14...
...Hydraulic piston, 14a...Small diameter piston part, 1
5... Piston rod, 16... Cylinder body,
16a...small diameter inner cylinder part, 16b...large diameter inner cylinder part,
17...Valve mechanism, l...oil passage, S...space.
Claims (1)
ラツチ７を切作動させ、前記油圧シリンダ１０の
引き続く駆動によつて摩擦式ブレーキ８を作動さ
せるよう構成してある作業車の走行操作構造であ
つて、前記油圧シリンダ１０を手動操作によるマ
スターシリンダ１３からの圧油により駆動するよ
う構成し、前記油圧シリンダ１０における収縮方
向にバネ付勢される油圧ピストン１４の圧油供給
口側を小径に形成するとともに、ピストンロツド
１５側を大径に形成して段付形状に構成し、かつ
、シリンダ本体１６の内筒部を前記油圧ピストン
１４の形状に対応した段付形状に設け、前記油圧
ピストン１４の小径ピストン部１４ａが前記シリ
ンダ本体１６の小径内筒部１６ａに嵌合した状態
で伸長作動することで、前記クラツチ７の切作動
を行い、前記小径ピストン部１４ａが前記小径内
筒部１６ａから抜け外れた位置から前記ブレーキ
８の作動を開始するよう移動ストロークを設定し
、前記クラツチ作動時に前記小径ピストン部１４
ａと大径内筒部１６ｂとの間に形成される空間Ｓ
に油を供給する油路ｌを設け、この油路ｌ中に前
記空間Ｓへの油の流入を許容するとともに、前記
空間Ｓの圧力が設定圧以上になると油の排出を阻
止する弁機構１７を介装し、前記設定圧をブレー
キ作動圧よりも低く、かつ、前記油圧ピストン１
４の収縮付勢力により生じる圧力よりも高く設定
してある作業車の走行操作構造。 This traveling operation structure for a working vehicle is configured such that the engagement type clutch 7 is disengaged by the extension drive of the hydraulic cylinder 10, and the friction type brake 8 is operated by the continuous drive of the hydraulic cylinder 10, The hydraulic cylinder 10 is configured to be driven by pressure oil from a manually operated master cylinder 13, and the pressure oil supply port side of the hydraulic piston 14 that is spring-biased in the direction of contraction in the hydraulic cylinder 10 is formed to have a small diameter. The piston rod 15 side is formed with a large diameter and configured in a stepped shape, and the inner cylindrical portion of the cylinder body 16 is provided in a stepped shape corresponding to the shape of the hydraulic piston 14, so that the small diameter piston portion of the hydraulic piston 14 is formed. 14a is fitted into the small-diameter inner cylindrical portion 16a of the cylinder body 16 and is extended, thereby disengaging the clutch 7, and the small-diameter piston portion 14a is disengaged from the small-diameter inner cylindrical portion 16a. The movement stroke is set so that the brake 8 starts operating from
A space S formed between a and the large diameter inner cylinder part 16b
A valve mechanism 17 is provided with an oil passage l for supplying oil to the oil passage l, allows oil to flow into the space S into the oil passage l, and prevents oil from being discharged when the pressure in the space S exceeds a set pressure. interposed, the set pressure is lower than the brake operating pressure, and the hydraulic piston 1
A traveling operation structure for a work vehicle in which the pressure is set higher than the pressure generated by the contraction biasing force in step 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11695590U JPH0472077U (en) | 1990-11-06 | 1990-11-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11695590U JPH0472077U (en) | 1990-11-06 | 1990-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0472077U true JPH0472077U (en) | 1992-06-25 |
Family
ID=31864816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11695590U Pending JPH0472077U (en) | 1990-11-06 | 1990-11-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0472077U (en) |
-
1990
- 1990-11-06 JP JP11695590U patent/JPH0472077U/ja active Pending
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