JPS6424665U - - Google Patents
Info
- Publication number
- JPS6424665U JPS6424665U JP11888387U JP11888387U JPS6424665U JP S6424665 U JPS6424665 U JP S6424665U JP 11888387 U JP11888387 U JP 11888387U JP 11888387 U JP11888387 U JP 11888387U JP S6424665 U JPS6424665 U JP S6424665U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- plunger
- preload spring
- outlet
- valve
- 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
Links
- 239000012530 fluid Substances 0.000 claims 3
- 230000036316 preload Effects 0.000 claims 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Landscapes
- Hydraulic Control Valves For Brake Systems (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
第１，２図は、本考案の一実施例を示す図であ
る。
３……液圧制御弁、７……シリンダ装置、９…
…ポンプ、１０……アキユムレータ、３９……ピ
ストン、４０……制御室。
1 and 2 are diagrams showing an embodiment of the present invention. 3...Liquid pressure control valve, 7...Cylinder device, 9...
...pump, 10...accumulator, 39...piston, 40...control room.
Claims (1)
ーキ装置のホイールシリンダに至る配管系に、マ
スタシリンダ側の入口圧力に比較して所定圧力以
上でホイールシリンダ側の出口圧力を減圧制御す
る液圧制御弁を設け、この液圧制御弁が入口と出
口との間に設けた弁装置と、この弁装置を開閉す
べく移動可能なプランジヤと、このプランジヤを
前記弁装置が開弁する方向に付勢する予負荷ばね
とを有し、前記プランジヤが前記出口側の圧力を
前記予負荷ばねの付勢方向に対向して受圧するよ
うにするとともに、リフト用シリンダ装置からの
圧力を供給して前記予負荷ばねの前記プランジヤ
に対する付勢力を変化させるようにしたフオーク
リフト用ブレーキ液圧制御装置において、リフト
用シリンダ装置の圧力源の圧力の低下に応じて前
記液圧制御弁の調圧作用を無効化する機構を設け
たフオークリフト用ブレーキ液圧制御装置。 A hydraulic control valve is provided in the piping system leading from the brake master cylinder operated by the driver to the wheel cylinder of the brake device, which controls the outlet pressure on the wheel cylinder side to be reduced at a predetermined pressure or more compared to the inlet pressure on the master cylinder side, The hydraulic control valve includes a valve device provided between an inlet and an outlet, a plunger movable to open and close the valve device, and a preload spring that biases the plunger in a direction in which the valve device opens. and the plunger receives the pressure on the outlet side in a direction opposite to the biasing direction of the preload spring, and supplies pressure from a lift cylinder device to the biasing direction of the preload spring. A forklift brake fluid pressure control device that changes the biasing force against the plunger is provided with a mechanism that disables the pressure regulating action of the fluid pressure control valve in response to a decrease in the pressure of the pressure source of the lift cylinder device. Brake fluid pressure control device for forklifts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987118883U JPH0628367Y2 (en) | 1987-08-04 | 1987-08-04 | Break hydraulic pressure controller for forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987118883U JPH0628367Y2 (en) | 1987-08-04 | 1987-08-04 | Break hydraulic pressure controller for forklift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6424665U true JPS6424665U (en) | 1989-02-10 |
| JPH0628367Y2 JPH0628367Y2 (en) | 1994-08-03 |
Family
ID=31363622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987118883U Expired - Lifetime JPH0628367Y2 (en) | 1987-08-04 | 1987-08-04 | Break hydraulic pressure controller for forklift |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628367Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03142581A (en) * | 1989-10-27 | 1991-06-18 | Matsushita Electric Ind Co Ltd | Compact data terminal equipment with image input function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5367069A (en) * | 1976-11-26 | 1978-06-15 | Nippon Air Brake Co | Hydraulic control valve for hydraulic braking device |
| JPS6229395U (en) * | 1985-08-02 | 1987-02-21 |
-
1987
- 1987-08-04 JP JP1987118883U patent/JPH0628367Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5367069A (en) * | 1976-11-26 | 1978-06-15 | Nippon Air Brake Co | Hydraulic control valve for hydraulic braking device |
| JPS6229395U (en) * | 1985-08-02 | 1987-02-21 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03142581A (en) * | 1989-10-27 | 1991-06-18 | Matsushita Electric Ind Co Ltd | Compact data terminal equipment with image input function |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0628367Y2 (en) | 1994-08-03 |
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