JPH0340157U - - Google Patents
Info
- Publication number
- JPH0340157U JPH0340157U JP9688189U JP9688189U JPH0340157U JP H0340157 U JPH0340157 U JP H0340157U JP 9688189 U JP9688189 U JP 9688189U JP 9688189 U JP9688189 U JP 9688189U JP H0340157 U JPH0340157 U JP H0340157U
- Authority
- JP
- Japan
- Prior art keywords
- oil
- movable member
- pressure
- braking
- oil chamber
- 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
- 239000003921 oil Substances 0.000 claims 5
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Description
図面は本考案に係る作業車のブレーキ構造の実
施例を示し、第１図は該構造の断面及び油圧回路
を表す図、第２図は油圧回路図、第３図はホイル
ローダの全体側面図であり、第４図はブレーキ構
造の比較例を表す断面図である。
１０……エンジン、１５……油圧ポンプ、３２
……制動部材、３４……可動部材、３５……ピス
トン、３７……油路、３８……弁機構、３９……
油室、Ｃ……加圧機構。
The drawings show an embodiment of the brake structure for a working vehicle according to the present invention, FIG. 1 is a cross-sectional view of the structure and a hydraulic circuit, FIG. 2 is a hydraulic circuit diagram, and FIG. 3 is an overall side view of a wheel loader. 4 is a sectional view showing a comparative example of the brake structure. 10...Engine, 15...Hydraulic pump, 32
... Braking member, 34 ... Movable member, 35 ... Piston, 37 ... Oil passage, 38 ... Valve mechanism, 39 ...
Oil chamber, C...pressure mechanism.
Claims (1)
せる可動部材３４と、エンジン駆動型の油圧ポン
プ１５からの圧油供給によつて、制動圧を解除す
る方向に前記可動部材３４を変位させるピストン
３５とでネガテイブ制動系を構成して成る作業車
のブレーキ構造であつて、前記ピストン３５と油
圧ポンプ１５との間の油路３７に対して開閉弁３
８を設けると共に、この開閉弁３８よりピストン
側の油路３７に分岐して作動油の貯留を行う油室
３９を設け、かつ、エンジン１０の停止状態にお
いて前記付勢力に抗して可動部材３４を制動解除
方向に変位させるため、前記開閉弁３８を閉じた
状態で前記油室３９に圧力を作用させる加圧機構
Ｃを有して成る作業車のブレーキ構造。 A movable member 34 that applies braking pressure to the braking member 32 by a biasing force, and a piston that displaces the movable member 34 in a direction to release the braking pressure by supplying pressure oil from an engine-driven hydraulic pump 15. 35 constitutes a negative braking system for a working vehicle.
8, an oil chamber 39 is provided which branches into an oil passage 37 on the piston side from this on-off valve 38 and stores hydraulic oil, and when the engine 10 is stopped, the movable member 34 resists the urging force. A brake structure for a working vehicle comprising a pressurizing mechanism C that applies pressure to the oil chamber 39 with the on-off valve 38 closed in order to displace the oil chamber 39 in the brake release direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9688189U JPH0340157U (en) | 1989-08-18 | 1989-08-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9688189U JPH0340157U (en) | 1989-08-18 | 1989-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0340157U true JPH0340157U (en) | 1991-04-17 |
Family
ID=31646057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9688189U Pending JPH0340157U (en) | 1989-08-18 | 1989-08-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0340157U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220369U (en) * | 1985-07-20 | 1987-02-06 |
-
1989
- 1989-08-18 JP JP9688189U patent/JPH0340157U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220369U (en) * | 1985-07-20 | 1987-02-06 |
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