JPH0443560U - - Google Patents
Info
- Publication number
- JPH0443560U JPH0443560U JP8589090U JP8589090U JPH0443560U JP H0443560 U JPH0443560 U JP H0443560U JP 8589090 U JP8589090 U JP 8589090U JP 8589090 U JP8589090 U JP 8589090U JP H0443560 U JPH0443560 U JP H0443560U
- Authority
- JP
- Japan
- Prior art keywords
- brake
- port
- communicating
- pilot
- accumulator
- 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
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 239000011888 foil Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Braking Systems And Boosters (AREA)
Description
第１〜４図は本考案の作業用補助制動装置付全
油圧パワーブレーキ装置の実施例を示しており、
第１図は油圧回路の構成を示す略図、第２図はブ
レーキバルブの背面図、第３図は第２図のＡ−Ａ
断面図、第４図は制御回路を示す電気回路図であ
る。
１……オイルポンプ、２……油タンク、３……
逆止弁、４……アンロードリリーフバルブ、５…
…主送油管、６ａ……第一分岐送油管、６ｂ……
第二分岐送油管、７……ブレーキペダル、８……
パイロツトポート、９ａ，９ｂ……給油ポート、
１０……ブレーキバルブ、１１……逆止弁、１２
……常用ブレーキ用アキユムレータ、１３……補
助ブレーキ用アキユムレータ、１４……吐出ポー
ト、１５……分岐配管、１６……車輪、１７……
第三分岐送油管、１８……駐車ブレーキ用スプリ
ングブレーキ、１９……シリンダ室、２０……ば
ね、２１……レバー、２２……駐車ブレーキ用電
磁切換弁、２３……本体、２４……シリンダ空間
、２５……プライマリスプール、２６……セカン
ダリスプール、２７……フランジ部、２８……ロ
ーラ、２９……押圧筒、３０……スリーブ、３１
……ストツプリング、３２……圧縮ばね、３３…
…パイロツトシリンダ、３４……パイロツトプラ
ンジヤ、３５……座板、３６……大径部、３７…
…小通孔、３８……第四分岐送油管、３９……減
圧弁、４０……補助ブレーキ用電磁切換弁、４１
……リアクシヨンチヤンバ、４２……リアクシヨ
ンプランジヤ、４３……蓋体、４４……座板、４
５……圧縮ばね、４６，４７……小径部、４８…
…大径部、４９……小通孔、５０……リアクシヨ
ンチヤンバ、５１……リアクシヨンプランジヤ、
５２……ボルト、５３……圧縮ばね、５４……ス
リーブ、５５……円筒部、５６……小通孔、５７
……駐車ブレーキ用スイツチ、５８……駐車ブレ
ーキ用リレー、５９……駐車ブレーキ表示灯、６
０……補助ブレーキ用スイツチ、６１……補助ブ
レーキ表示灯、６２……排出通路。
Figures 1 to 4 show an embodiment of the fully hydraulic power brake device with an auxiliary braking device for work according to the present invention.
Figure 1 is a schematic diagram showing the configuration of the hydraulic circuit, Figure 2 is a rear view of the brake valve, and Figure 3 is A-A in Figure 2.
The sectional view and FIG. 4 are electrical circuit diagrams showing the control circuit. 1...Oil pump, 2...Oil tank, 3...
Check valve, 4... Unload relief valve, 5...
...Main oil pipe, 6a...First branch oil pipe, 6b...
Second branch oil pipe, 7... Brake pedal, 8...
Pilot port, 9a, 9b...Refueling port,
10... Brake valve, 11... Check valve, 12
...Accumulator for service brake, 13...Accumulator for auxiliary brake, 14...Discharge port, 15...Branch pipe, 16...Wheel, 17...
Third branch oil pipe, 18...Spring brake for parking brake, 19...Cylinder chamber, 20...Spring, 21...Lever, 22...Solenoid switching valve for parking brake, 23...Main body, 24...Cylinder Space, 25...Primary spool, 26...Secondary spool, 27...Flange portion, 28...Roller, 29...Press cylinder, 30...Sleeve, 31
...Stop spring, 32...Compression spring, 33...
...Pilot cylinder, 34...Pilot plunger, 35...Seat plate, 36...Large diameter section, 37...
... Small through hole, 38 ... Fourth branch oil pipe, 39 ... Pressure reducing valve, 40 ... Solenoid switching valve for auxiliary brake, 41
... Reaction chamber, 42 ... Reaction plunger, 43 ... Lid body, 44 ... Seat plate, 4
5...Compression spring, 46, 47...Small diameter portion, 48...
...Large diameter part, 49...Small through hole, 50...Reaction chamber, 51...Reaction plunger,
52... Bolt, 53... Compression spring, 54... Sleeve, 55... Cylindrical portion, 56... Small through hole, 57
... Parking brake switch, 58 ... Parking brake relay, 59 ... Parking brake indicator light, 6
0...Auxiliary brake switch, 61...Auxiliary brake indicator light, 62...Exhaust passage.
Claims (1)
る為の常用制動時に必要とされる圧油を保持して
おく常用ブレーキ用アキユムレータと、圧油を保
持しておく補助ブレーキ用アキユムレータと、上
記常用ブレーキ用アキユムレータに通じる給油ポ
ートと各車輪に設けたホイルシリンダに通じる吐
出ポートとを有し、ブレーキペダルの踏み込みに
よりシリンダ空間内でスプールを変位させ、上記
給油ポートと吐出ポートとを連通させるブレーキ
バルブと、このブレーキバルブの一部に設けられ
、上記シリンダ空間の一端部分に設けられたパイ
ロツトシリンダに連通するパイロツトポートと、
上記シリンダ空間の他端に設けられ、吐出ポート
部分と同じ油圧を導入されるリアクシヨンチヤン
バと、上記パイロツトポートと補助ブレーキ用ア
キユムレータとを連通する配管の途中に設けられ
、上記パイロツトポートを補助ブレーキ用アキユ
ムレータに連通させる状態とパイロツトポートを
油タンクに連通させる状態とを切り換える切換弁
とから成る、作業用補助制動装置付全油圧パワー
ブレーキ装置。 A pressure oil supply means, a service brake accumulator that holds pressure oil required during service braking to stop a running vehicle, an auxiliary brake accumulator that holds pressure oil, and the above. A brake that has a refueling port that communicates with a service brake accumulator and a discharge port that communicates with a foil cylinder provided on each wheel, and that when the brake pedal is depressed, a spool is displaced within the cylinder space, thereby communicating the refueling port and the discharge port. a pilot port provided in a portion of the brake valve and communicating with a pilot cylinder provided in one end portion of the cylinder space;
A reaction chamber is provided at the other end of the cylinder space and receives the same hydraulic pressure as the discharge port, and is provided in the middle of the piping that communicates the pilot port with the auxiliary brake accumulator to assist the pilot port. A fully hydraulic power brake device with an auxiliary braking device for work, consisting of a switching valve that switches between communicating with the brake accumulator and communicating the pilot port with the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990085890U JP2512475Y2 (en) | 1990-08-16 | 1990-08-16 | Full hydraulic power brake device with auxiliary braking device for work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990085890U JP2512475Y2 (en) | 1990-08-16 | 1990-08-16 | Full hydraulic power brake device with auxiliary braking device for work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0443560U true JPH0443560U (en) | 1992-04-14 |
| JP2512475Y2 JP2512475Y2 (en) | 1996-10-02 |
Family
ID=31635249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990085890U Expired - Lifetime JP2512475Y2 (en) | 1990-08-16 | 1990-08-16 | Full hydraulic power brake device with auxiliary braking device for work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2512475Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5163085U (en) * | 1974-11-13 | 1976-05-18 |
-
1990
- 1990-08-16 JP JP1990085890U patent/JP2512475Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5163085U (en) * | 1974-11-13 | 1976-05-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2512475Y2 (en) | 1996-10-02 |
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