JPS5881233A - Negative type brake apparatus - Google Patents
Negative type brake apparatusInfo
- Publication number
- JPS5881233A JPS5881233A JP56178542A JP17854281A JPS5881233A JP S5881233 A JPS5881233 A JP S5881233A JP 56178542 A JP56178542 A JP 56178542A JP 17854281 A JP17854281 A JP 17854281A JP S5881233 A JPS5881233 A JP S5881233A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- piston
- oil
- oil chamber
- spring
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
- F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
- F16D55/36—Brakes with a plurality of rotating discs all lying side by side
- F16D55/40—Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or one the brake
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、ブレーキ用ピストンに圧油を供給してブレ
ーキ板による制動を解き、その圧油を排除してばね力に
よりブレーキ用ピストンをｍ麹させてブレーキ板による
制動を行わせるように構成したネガティブ式ブレーキ装
置に関するものである０
まず、この種の従来のネガティブ式ブレーキの一例を畠
１図ないし菖５図により説明する〇減速機がわのケーシ
ングｌと油圧モータがわのケーシング２とはボルト３に
よりたがいに結合されており、ケーシング２は油圧モー
タがわにポルト４により結合されている。油圧モータの
出力軸５とビニオイ７を設けた減速機の回転軸６との相
対向する端部は、カップリング器によりたがいに連結さ
れている。ピニオｙ７は他の軸に取付けた歯車９とかみ
合っている。Detailed Description of the Invention This invention supplies pressurized oil to the brake piston to release the braking by the brake plate, removes the pressure oil, and causes the brake piston to become koji due to spring force, thereby causing the brake plate to stop braking. 0 First, an example of this type of conventional negative type brake will be explained with reference to Figures 1 to 5. Casing l next to the reducer and hydraulic motor The casings 2 are connected to each other by bolts 3, and the casing 2 is connected to the hydraulic motor by a port 4. Opposing ends of the output shaft 5 of the hydraulic motor and the rotating shaft 6 of the speed reducer provided with the speed reducer 7 are connected to each other by a coupling device. Pinio Y7 meshes with gear 9 attached to another shaft.
ケーシングｌ、ケーシング２、カップ１Ｊンゲ８にかこ
まれた室には、軸方向に摺動できるようにブレーキ用ピ
ストン１０がおさめられており、ブレーキ用ピストン１
０の一端面とケーシング五に設けたばね受は部との間に
は、ブレーキ用ピストン１０を介して為−ブレーキ板１
２および感二ブレーキ板１３を押圧する板ばね１１が職
付けられている。纂−ブレーキ板１２、謳ニブレーキ板
１３は複数枚交互に配置されており、前者の外局に形成
したスプライン部はケーシング２に設ケタスプライン溝
２１にはめこまれて右り、後者の内周に形成したスプラ
イン部はカップリング８の外周に設けたスプライン溝８
！にはめこまれている。A brake piston 10 is housed in a chamber surrounded by the casing 1, the casing 2, and the cup 1J so as to be able to slide in the axial direction.
A brake piston 10 is interposed between one end surface of the brake plate 1 and the spring bearing provided on the casing 5.
2 and a leaf spring 11 that presses the brake plate 13. A plurality of the brake plates 12 and the brake plates 13 are arranged alternately, and the spline part formed on the outer part of the former is fitted into the spline groove 21 provided in the casing 2, and the spline part formed on the inner part of the latter The spline portion formed in the spline groove 8 formed on the outer periphery of the coupling 8
! It's stuck in.
ブレーキ用ピストン１０のケーシング２の内周面に対す
る小径部１０ ｂ、大径部１０Ｍの摺動面部には、それ
ぞれ０リング１４．１５が取付けられている。ブレーキ
用ピストン１０の大径部１０ｍの一端面とケーシング２
の内側面との間には油室１６Ａが設けられており、その
油室１６Ａはケーシン１２に設けた油路１７を介してケ
ーシング２に設けた基準圧油入口１８につらなっている
。O-rings 14 and 15 are attached to the sliding surfaces of the small diameter portion 10b and large diameter portion 10M of the brake piston 10 against the inner peripheral surface of the casing 2, respectively. One end surface of the large diameter portion 10m of the brake piston 10 and the casing 2
An oil chamber 16A is provided between the inner surface of the casing 12 and the oil chamber 16A, and the oil chamber 16A is connected to a reference pressure oil inlet 18 provided in the casing 2 via an oil passage 17 provided in the casing 12.
４４図、纂５図は油圧モータＭのブレーキ装置Ｂの油圧
回路を示し、油嵐１６Ａは２ボ一ト２位置切替弁１９の
作動ポートに接続されており、切替弁１９は油圧ポンプ
２０、油タン々２１に接続されている。44 and 5 show the hydraulic circuit of the brake device B of the hydraulic motor M, the oil storm 16A is connected to the operating port of the 2-bot 2-position switching valve 19, and the switching valve 19 is connected to the hydraulic pump 20, It is connected to oil tanks 21.
切替弁１９を菖４図の位置に切替えて油室１６人を油タ
ンク２１に接続させれば、ブレーキ用ピストン１０が板
ばね１１により右方に押し鋤かされ、ブレーキ板１２．
１３が圧着させられ、出力軸５の回転を抑止する制動力
が発生する。ｚ２図はその状態を表わす。When the switching valve 19 is switched to the position shown in Fig. 4 to connect the oil chamber 16 to the oil tank 21, the brake piston 10 is pushed to the right by the leaf spring 11, and the brake plate 12.
13 is crimped, and a braking force that suppresses the rotation of the output shaft 5 is generated. Diagram z2 represents this state.
制動を解く際には、切替弁１９を纂ｓｗＡに示す位置に
切替え、圧油入口１８から油路１７を通して油室１６Ａ
に基準圧油を供給する。これによりブレーキ用ピストン
１０が板ばね１１に抗してばねがわに押し動かされ、編
３図に示すようにブレーキ板１２．１３が離間し、制動
が解かれる。When releasing the brake, switch the switching valve 19 to the position shown in swA, and connect the pressure oil inlet 18 to the oil chamber 16A through the oil passage 17.
Supply standard pressure oil to. As a result, the brake piston 10 is pushed against the leaf spring 11, and as shown in Figure 3, the brake plates 12 and 13 are separated and the brake is released.
上述した従来のネガティブ式ブレーキ装置は、基準油圧
が異常に低下したときでも、ばね力により油圧モータの
回転を長時間にわたり停止させておくためのパーキング
用ブレーキ装置としては適しているが、下記のような欠
点がある。すなわち、回転している出力軸５を停止させ
るためには。The conventional negative brake device described above is suitable as a parking brake device that uses spring force to stop the rotation of the hydraulic motor for a long time even when the reference oil pressure drops abnormally. There are some drawbacks. That is, in order to stop the rotating output shaft 5.
制動力はモータ駆動力以上でなければならないゆえ、ば
ね力を大きくする必要がある。そのため。Since the braking force must be greater than the motor driving force, it is necessary to increase the spring force. Therefore.
ばね１１が強大なものとなり、ブレーキ室も大きくナリ
、重量も増し、したがって敗付ける場所が限られる。ま
た、制御解除のためには、ブレーキ用ピストンの受圧面
積を大きくするか、従来の基準油圧より高圧の油圧にす
るかしなければならず、ブレーキ室を大形にし、もしく
はブレーキ用ピストン１０とケーシング２との摺動面の
シールを油密性、耐久性の高いものにする必要があり、
原価高になる。The spring 11 becomes stronger, the brake chamber becomes larger, and the weight increases, so the places where it can fail are limited. In addition, in order to release the control, it is necessary to increase the pressure receiving area of the brake piston or use a higher pressure than the conventional standard hydraulic pressure, and the brake chamber must be made larger or the brake piston 10 must be increased in size. The seal on the sliding surface with casing 2 must be oil-tight and highly durable.
The cost will be high.
との斃明は、上記の欠点を除くためのもので、ブレーキ
用ピストンの両側面部に圧油を供給する油室を形成し、
両油室を切替弁に接続したことを特徴とする。The purpose of this is to eliminate the above drawbacks, and forms oil chambers that supply pressure oil on both side surfaces of the brake piston.
The feature is that both oil chambers are connected to a switching valve.
つぎに、この発明の一実施態様を纂６図ないし纂９図に
より説明する。それらの図において、謳１図ないし謳５
図と同じ符号をつけたものは、同じもの、もしくは相当
するものを表わす。Next, one embodiment of the present invention will be explained with reference to Figures 6 to 9. In those figures, hymn 1 to hymn 5 are
Items with the same reference numerals as in the figure represent the same or equivalent items.
ブレーキ用ピストン１０の大径部１０ａの油室１６Ａと
反対がわの側面にも油室１６Ｂが設けられており、この
油室１６１１はケーシング１に設けた油路２２につらな
っている。諷８図および纂９図に示すように、油室１６
Ａ、１６Ｂは、それぞれ４ポ一ト２位置切替弁２３の作
動ポートに接続されている。ケーシングｌの内周面ヲ５
ｌｌＩＩするピストン１０の小径部の外周面部にも０リ
ング２４が設けられている。その他の構造はさきに説明
した従来のブレーキ装置と同様である。An oil chamber 16B is also provided on the opposite side of the large diameter portion 10a of the brake piston 10 from the oil chamber 16A, and this oil chamber 1611 is connected to an oil passage 22 provided in the casing 1. As shown in Fig. 8 and Fig. 9, the oil chamber 16
A and 16B are connected to operating ports of the four-point/two-position switching valve 23, respectively. Inner peripheral surface of casing l 5
An O-ring 24 is also provided on the outer peripheral surface of the small diameter portion of the piston 10. The rest of the structure is similar to the conventional brake device described above.
制動を解く愕には、切替弁２３を感９図の位置に切替え
、圧油を油室１６Ａに供給するとともに、油室１６Ｂの
圧油を油タンク２１に排出させる。これにより、ブレー
キ用ピストン１Ｇが左方向に押し動かされ、制動が解か
れる。編フ図はその状態を表わす。When the brake is released, the switching valve 23 is switched to the position shown in Fig. 9 to supply pressurized oil to the oil chamber 16A and to discharge the pressurized oil in the oil chamber 16B to the oil tank 21. As a result, the brake piston 1G is pushed to the left and the brake is released. The compilation diagram shows the state.
制動をかける時には、切替弁２３を纏８図の位置に切替
え、圧油を油室１６Ｂに供給するとともに、油室１６Ａ
の圧油を油タンク２１に排出させる。したか７て、ばね
１１の力Ｓよびブレーキ用ピストン１０の受圧面積と基
準圧油の圧力との積の力によりブレーキ用ピストン１０
が右方向に押しｍかされる。これ区より、ブレーキ［１
２，１３が圧着させられ、１転中出力軸５を停止させる
だけの制動力を発生する。なお、この発明によるブレー
キ装置におけるばね１１は、出力軸５を停止させた才ま
保持できるだけの制動力を発生するのに十分な程度のば
ね力のものとする。When applying braking, the switching valve 23 is switched to the position shown in Fig. 8 to supply pressurized oil to the oil chamber 16B, and also to supply pressure oil to the oil chamber 16A.
Pressure oil is discharged into the oil tank 21. Therefore, the brake piston 10 is moved by the force S of the spring 11 and the product of the pressure receiving area of the brake piston 10 and the pressure of the reference pressure oil.
is pushed to the right. From this area, the brake [1
2 and 13 are pressed together to generate a braking force sufficient to stop the output shaft 5 during one revolution. The spring 11 in the brake device according to the present invention has a spring force sufficient to generate enough braking force to keep the output shaft 5 stopped.
編１０図は油室１６Ａ、１６Ｂをそれぞれ４ポ一ト３位
置Ａ１３Ｒ接続の切替弁２５の作動ボートに接続したこ
の発明の他の実施態様を示す。この実施態様によれば、
ばね１１によるパーキング用制動力の緩やかな制動と、
瞬時出力軸５の回転を停止し得るような強大な制動との
二段階の制動を選択できる〇
以上説明したこの発明によれば下記の効果が得られる。Figure 10 shows another embodiment of the present invention in which the oil chambers 16A and 16B are each connected to an operating boat of a switching valve 25 with 4 points and 3 positions A13R connection. According to this embodiment:
gentle braking of the parking braking force by the spring 11;
Two-stage braking can be selected, including strong braking that can stop the rotation of the instantaneous output shaft 5. According to the invention described above, the following effects can be obtained.
（１）制動用のばねは、モータの出力軸の回転を停止さ
せて保持するに足る必要最小限のばね力のものですむ。(1) The braking spring only needs to have the minimum spring force necessary to stop and hold the rotation of the output shaft of the motor.
したがって、小さいばねを使用でき、ブレーキ室を小形
、軽量にすることができ、かつ、制動解除のための油圧
力が低くてすみ、ブレーキ用ピストンの摺ＩＩＩ面の圧
油の対圧が容易になる（２）パーキングの制動と通常の
制動とを、同一のブレーキ機構で行うことができ、原価
を低減できる。Therefore, a small spring can be used, the brake chamber can be made small and lightweight, the hydraulic pressure for releasing the brake can be low, and the counterpressure of the pressure oil on the sliding surface of the brake piston can be easily controlled. (2) Parking braking and normal braking can be performed by the same brake mechanism, reducing cost.
ａｌｌａ！ｌないし＃Ｉ３図は従来のネガティブ式ブレ
ーキ装置を示す断面側面図、纂４図および１１５１ａは
従来のネガティブ式ブレーキ装置の油圧回路を示す図、
為６図および１に７８！；はこの発明によるネガティブ
式ブレーキ装置の一実論態様を示す断面側面図、纂８図
ないし謳１０図はこの発明によるネガティブ式ブレーキ
装置の油圧回路を示す図である。
１・・ケーシング、 ２・・ケーシング。
５・・出力軸、 ６・・回転軸、 ７ｄ・ビニオン
、 ８・−カップリング、 ９＠・歯車、
１０・・ブレーキ用ピストン、１０畠・・大径部、
１０ｂ・・小径部、１１・・板ばね、 １２−
＠謳−ブレーキ板、１３・・纂ニブレーキ板、
１６Ａ、１６Ｂ＠・油室、 １７・偕油路、１８＠
・基準圧油入口、 Ｍ・・油圧モータ、２０・・油圧
ポンプ、 ２１・ｅ油タンク、２２・―油路、
２３・・４ポ一ト２位置切替弁、 ２４・・Ｏりン
グ、 ２５・＠４４ポ一ト３置ムＢＲ接続の切替弁Alla! Figures 1 to #I3 are cross-sectional side views showing a conventional negative brake device, Figures 4 and 1151a are diagrams showing a hydraulic circuit of a conventional negative brake device,
For 6 figures and 1 to 78! ; is a sectional side view showing one practical aspect of the negative type brake device according to the present invention, and Figures 8 to 10 are diagrams showing the hydraulic circuit of the negative type brake device according to the present invention. 1...Casing, 2...Casing. 5. Output shaft, 6. Rotating shaft, 7d. Binion, 8.-Coupling, 9@. Gear,
10...Brake piston, 10...Large diameter part,
10b... Small diameter part, 11... Leaf spring, 12-
@Song-Brake plate, 13...Yuuni brake plate, 16A, 16B@・Oil chamber, 17.Kai oil road, 18@
- Standard pressure oil inlet, M... Hydraulic motor, 20... Hydraulic pump, 21 - e oil tank, 22 - Oil path,
23...4-point, 2-position switching valve, 24...O-ring, 25, @44-point, 3-position switching valve with BR connection
Claims (1)
ンを押圧するばねとブレーキ用ピストンを介して作ｌｌ
ｌ１させるブレーキ板とをおさめ、ブレーキ用ピストン
に対してばねの力に抗してブレーキ用ピストンを軸方向
に摺動させる油室を形成し、油室に圧油を供給してブレ
ーキ用ピストンを摺動させることによりブレーキ板によ
る制動を解き、油室の圧油を排除することによりばね力
によりブレーキ震ピストンを介してブレーキ板による制
動を行わせるネガティブ式ブレーキ装置において、ブレ
ーキ用ピストンの前記油室の反対がわに、ばねの抑圧方
向にブレーキピストンをｌ１ｌｌＩｌサセル油塞を形成
し、両油室を切替弁に接続したことを特徴とするネガテ
ィブ式ブレーキ装置。A brake piston is installed inside the casing, a spring that presses the brake piston, and a brake piston.
An oil chamber is formed in which the brake plate is moved axially against the brake piston against the force of the spring, and pressure oil is supplied to the oil chamber to move the brake piston. In a negative brake device, the braking by the brake plate is released by sliding, and the pressure oil in the oil chamber is removed, and the brake plate performs braking via the brake vibration piston by spring force. A negative type brake device characterized in that, on the opposite side of the chamber, a brake piston is formed with a sacell oil block in the direction in which the spring is depressed, and both oil chambers are connected to a switching valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56178542A JPS5881233A (en) | 1981-11-06 | 1981-11-06 | Negative type brake apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56178542A JPS5881233A (en) | 1981-11-06 | 1981-11-06 | Negative type brake apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5881233A true JPS5881233A (en) | 1983-05-16 |
Family
ID=16050295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56178542A Pending JPS5881233A (en) | 1981-11-06 | 1981-11-06 | Negative type brake apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5881233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010025312A (en) * | 2008-07-24 | 2010-02-04 | Kayaba Ind Co Ltd | Fluid pressure brake device |
-
1981
- 1981-11-06 JP JP56178542A patent/JPS5881233A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010025312A (en) * | 2008-07-24 | 2010-02-04 | Kayaba Ind Co Ltd | Fluid pressure brake device |
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