JPS6078661U - Negative brake control device for hydraulically driven vehicles - Google Patents
Negative brake control device for hydraulically driven vehiclesInfo
- Publication number
- JPS6078661U JPS6078661U JP1983170088U JP17008883U JPS6078661U JP S6078661 U JPS6078661 U JP S6078661U JP 1983170088 U JP1983170088 U JP 1983170088U JP 17008883 U JP17008883 U JP 17008883U JP S6078661 U JPS6078661 U JP S6078661U
- Authority
- JP
- Japan
- Prior art keywords
- brake
- hydraulic
- control device
- valve
- hydraulically driven
- 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
Landscapes
- Braking Systems And Boosters (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の実施例を示すもので、第１図は回路図、
第２図はブレーキ作動弁の一部破断説明図である。
２は油圧ポンプ、３は油圧モータ、４，５は閉回路、６
は出力軸、７はブレーキ、１０はパイロットバイパス弁
、１１は電気・油圧サーボ弁、１２は制御装置、１３は
変速レバー、１４はブレーキペダル、１５ａ、１５ｂは
ポテンショメータ、１６はブレーキ作動弁、１６ａはド
レン位置、１６ｂは連通位置、１７は油圧源。The drawings show an embodiment of the present invention, and FIG. 1 is a circuit diagram;
FIG. 2 is a partially cutaway explanatory view of the brake operating valve. 2 is a hydraulic pump, 3 is a hydraulic motor, 4 and 5 are closed circuits, 6
is an output shaft, 7 is a brake, 10 is a pilot bypass valve, 11 is an electric/hydraulic servo valve, 12 is a control device, 13 is a gear shift lever, 14 is a brake pedal, 15a, 15b are potentiometers, 16 is a brake operating valve, 16a is the drain position, 16b is the communication position, and 17 is the hydraulic source.
Claims (1)
る可変形の油圧ポンプ２とを閉回路４゜５にて接続し、
油圧モータ３の出力軸６側に、ばね力にて作動し、油圧
力にて解除するネガティブ形のブレーキ７を設け、また
上記閉回路４，５間に、パイロットバイパス弁１０を介
装した油圧駆動車において、上記ブレーキ７の油圧力作
用部とパイロットバイパス弁１０のパイロット圧作用部
とを、ドレン位置１６ａと連通位置１６ｂとを有し、か
つ電磁力にて切換作動されるブレーキ作動弁１６を介し
て油圧源１７に接続し、また変速レバー１３とブレーキ
ペダル１４の各操作支点にポテンショメータ１５ａ、１
５ｂを設け、この各ポテンショメータ１５ａ、１５ｂを
制御装置１２を介して上記ブレーキ作動弁１６及び電気
・油圧サーボ弁１１の各電磁作動部に接続し、さらに上
記ブレーキ作動弁１６のスプールとブレーキペダル１４
とを、ブレーキペダル１４を所定踏込み角以上傾動した
ときに両者が連結するようにした機械的リンケージを介
して連結したことを特徴とする油圧駆動車のネガティブ
ブレーキの制御装置。A hydraulic motor 3 and a variable hydraulic pump 2 controlled by an electric/hydraulic servo valve 11 are connected through a closed circuit 4°5.
A negative type brake 7 is provided on the output shaft 6 side of the hydraulic motor 3 and is actuated by a spring force and released by hydraulic pressure, and a pilot bypass valve 10 is interposed between the closed circuits 4 and 5. In the drive vehicle, a brake operating valve 16 which connects the hydraulic pressure acting part of the brake 7 and the pilot pressure acting part of the pilot bypass valve 10, has a drain position 16a and a communication position 16b, and is switched and operated by electromagnetic force. It is connected to the hydraulic power source 17 via
5b, each potentiometer 15a, 15b is connected to each electromagnetic actuating part of the brake operating valve 16 and the electric/hydraulic servo valve 11 via the control device 12, and the spool of the brake operating valve 16 and the brake pedal 14 are connected to each other.
A negative brake control device for a hydraulically driven vehicle, characterized in that the two are connected via a mechanical linkage which connects the two when the brake pedal 14 is tilted by a predetermined depression angle or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983170088U JPS6078661U (en) | 1983-11-04 | 1983-11-04 | Negative brake control device for hydraulically driven vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983170088U JPS6078661U (en) | 1983-11-04 | 1983-11-04 | Negative brake control device for hydraulically driven vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6078661U true JPS6078661U (en) | 1985-06-01 |
| JPH0313408Y2 JPH0313408Y2 (en) | 1991-03-27 |
Family
ID=30371404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983170088U Granted JPS6078661U (en) | 1983-11-04 | 1983-11-04 | Negative brake control device for hydraulically driven vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6078661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235134A (en) * | 1987-03-23 | 1988-09-30 | Yutani Heavy Ind Ltd | Travelling speed changeover device of hydraulic travelling vehicle |
-
1983
- 1983-11-04 JP JP1983170088U patent/JPS6078661U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235134A (en) * | 1987-03-23 | 1988-09-30 | Yutani Heavy Ind Ltd | Travelling speed changeover device of hydraulic travelling vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0313408Y2 (en) | 1991-03-27 |
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