JP2514407B2 - Pneumatic-hydraulic conversion brake cylinder device - Google Patents
Pneumatic-hydraulic conversion brake cylinder deviceInfo
- Publication number
- JP2514407B2 JP2514407B2 JP63234336A JP23433688A JP2514407B2 JP 2514407 B2 JP2514407 B2 JP 2514407B2 JP 63234336 A JP63234336 A JP 63234336A JP 23433688 A JP23433688 A JP 23433688A JP 2514407 B2 JP2514407 B2 JP 2514407B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pneumatic
- cylinder
- pressure
- hydraulic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、鉄道車両用のブレーキシリンダ装置に係
り、特に空気圧力を油圧力に変換，増圧してブレーキ力
を発生する空気圧−油圧変換ブレーキシリンダ装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake cylinder device for a railway vehicle, and more particularly to a pneumatic-hydraulic pressure conversion brake that converts air pressure into hydraulic pressure to generate a braking force. Regarding a cylinder device.
（従来の技術） 従来、空気圧−油圧変換ブレーキシリンダ装置は、車
両の台車上に設置されて各車軸ごとに設けられており、
通常１つの台車に２本の車軸が設けられているので、第
２図に示すように空気圧−油圧変換ブレーキシリンダ装
置は１台車に２台並列に設置されていた。(Prior Art) Conventionally, a pneumatic-hydraulic conversion brake cylinder device is installed on a bogie of a vehicle and provided for each axle,
Normally, one bogie is provided with two axles. Therefore, as shown in FIG. 2, two pneumatic-hydraulic conversion brake cylinder devices were installed in parallel in one bogie.
この従来装置は、中継弁１から圧力空気が供給される
空気圧シリンダ2,2と、この空気圧シリンダ2,2のピスト
ンロッド部3,3をピストンとするとともにピストンロー
ク始端及び終端位置近傍に供給口A,A及びB,Bを設けた油
圧シリンダ4,4と、この油圧シリンダ4,4の供給口A,Aに
接続するとともに供給口B,Bに油圧シリンダ4,4側を順方
向とする逆止弁5,5を介して接続した油タンク6,6と、こ
の油タンク6,6に接続した滑走防止弁7,7と、この滑走防
止弁7,7に接続するとともにこの滑走防止弁7,7の切換え
動作により油圧が給排される作動シリンダ8,8とから構
成されており、 あるブレーキ指令により中継弁１から空気圧シリンダ
2,2に圧力空気が供給されると、この圧力空気により空
気圧シリンダ2,2のピストンロッド部3,3が図中右動して
油圧シリンダ4,4に油圧を発生させ滑走防止弁7,7を介し
て作動シリンダ8,8のピストンを図中右動させてブレー
キ力を出力させる。このとき、作動シリンダ8,8のブレ
ーキ力により車輪が回転せずにレール上を滑るいわゆる
滑走状態が起こると図外の滑走検知器がこれを検知して
滑走防止弁7,7を作動（励磁）させ作動シリンダ8,8内の
油圧を油タンク6,6に逃がしてブレーキ力を緩める。そ
して滑走状態が解除されると滑走検知弁7,7が復帰（消
磁）し作動シリンダ8,8内の油圧が減少した分ピストン
ロッド部3,3がさらに図中右動して再び作動シリンダ8,8
に油圧を供給してブレーキ力を出力させるものである。
そして、ブレーキ力の解除時は、圧力空気が空気圧シリ
ンダ2,2から中継弁１を介して排出されピストンロッド
部3,3が戻しばね9,9により図中左動し、作動シリンダ8,
8内の油圧が減少してブレーキ力を解除させる。このと
き油圧シリンダ4,4は、ピストンロッド部3,3の図中左動
に伴って油タンク6,6内の油を供給路B,Bより逆止弁5,5
を介して補給されるとともにピストンロッド部3,3が供
給路A,Aを超えて図中左動するとこの供給路A,Aからも補
給され、次のブレーキ作動に備えるものである。This conventional device uses pneumatic cylinders 2 and 2 to which pressurized air is supplied from a relay valve 1 and piston rod portions 3 and 3 of the pneumatic cylinders 2 and 2 as pistons, and supply ports near the piston rooke start end and end positions. The hydraulic cylinders 4, 4 provided with A, A and B, B are connected to the supply ports A, A of the hydraulic cylinders 4, 4 and the supply ports B, B are connected to the hydraulic cylinders 4, 4 in the forward direction. Oil tanks 6,6 connected via check valves 5,5, antiskid valves 7,7 connected to the oil tanks 6,6, and antiskid valves connected to the antiskid valves 7,7 It is composed of operating cylinders 8 and 8 whose hydraulic pressure is supplied and discharged by switching operation of 7 and 7, and from a relay valve 1 to a pneumatic cylinder by a certain brake command.
When pressurized air is supplied to 2,2, this pressurized air causes the piston rod portions 3,3 of the pneumatic cylinders 2,2 to move to the right in the figure to generate hydraulic pressure in the hydraulic cylinders 4,4 to prevent the skid prevention valve 7,4. The pistons of the operating cylinders 8 and 8 are moved to the right in the figure via 7 to output the braking force. At this time, if a so-called sliding state occurs in which the wheels do not rotate and slide on the rail due to the braking force of the operating cylinders 8,8, a sliding detector (not shown) detects this and activates the anti-skid valves 7,7 (excitation). ) To release the hydraulic pressure in the operating cylinders 8 and 8 to the oil tanks 6 and 6 to loosen the braking force. Then, when the sliding state is released, the sliding detection valves 7 and 7 return (demagnetize) and the hydraulic pressure in the operating cylinders 8 and 8 decreases, and the piston rods 3 and 3 move further to the right in the figure and the operating cylinder 8 again. , 8
The hydraulic pressure is supplied to and the braking force is output.
When the braking force is released, the pressurized air is discharged from the pneumatic cylinders 2,2 via the relay valve 1, and the piston rod portions 3,3 are moved leftward in the figure by the return springs 9,9, so that the operating cylinders 8,
The hydraulic pressure in 8 decreases and the braking force is released. At this time, the hydraulic cylinders 4, 4 supply the oil in the oil tanks 6, 6 to the check valves 5, 5 from the supply paths B, B as the piston rods 3, 3 move left in the figure.
When the piston rod portions 3, 3 are moved to the left in the figure beyond the supply paths A, A, the supply is also supplied from the supply paths A, A to prepare for the next brake operation.
（発明が解決しようとする課題） しかしながら、上記従来装置はブレーキ時に車輪の滑
走状態が続いて発生し滑走防止弁7,7が何回も作動する
と、この滑走状態が解除される度にピストンロッド部3,
3が徐々に図中右動しながら油圧シリンダ4,4から作動シ
リンダ8,8内に油圧を供給するので、やがてピストンロ
ッド部3,3が全ストロークして新たに作動シリンダ8,8に
油圧を供給することができなくなり、ブレーキ力が得ら
れなくなる。このため、滑走防止弁7,7の作動回数を限
定してピストンロッド部3,3の全ストローク状態を防止
する手段が構じられていたが、滑走防止弁7,7の設定回
数を超えて滑走状態が起こってもこの滑走防止弁7,7が
作動しないので、滑走状態が続いて車輪踏面が傷んでし
まうという問題がある。(Problems to be solved by the invention) However, in the above-mentioned conventional device, when the skid state of the wheel continuously occurs during braking and the skid prevention valves 7 and 7 are operated many times, the piston rod is released every time the skid state is released. Part 3,
While 3 gradually moves to the right in the figure, the hydraulic pressure is supplied from the hydraulic cylinders 4, 4 into the working cylinders 8, 8, so that eventually the piston rod parts 3, 3 make a full stroke and the hydraulic pressure is newly supplied to the working cylinders 8, 8. Cannot be supplied, and the braking force cannot be obtained. For this reason, a means for preventing the full stroke state of the piston rod parts 3,3 by limiting the number of times of operation of the antiskid valves 7,7 has been constructed, but the number of times of operation of the antiskid valves 7,7 has been exceeded. Even if the skid condition occurs, the skid prevention valves 7 and 7 do not operate, so that there is a problem that the skid condition continues and the wheel tread is damaged.
そこで本発明は、車輪の滑走状態が何回起こっても常
に滑走防止弁を作動させてこの滑走状態を解除すること
ができる空気圧−油圧変換ブレーキシリンダ装置を提供
することを技術的課題とする。Therefore, it is a technical object of the present invention to provide a pneumatic-hydraulic conversion brake cylinder device that can always release the sliding condition by operating the anti-skid valve no matter how many times the sliding condition of the wheel occurs.
（課題を解決するための手段） 上記技術的課題を解決するための技術的手段は、ピス
トン部の全ストローク位置近傍に検知孔を有する第1,第
２の空気圧シリンダと、この第1,第２の空気圧シリンダ
のピストンロッド部をピストンとする第1,第２の油圧シ
リンダと、中継弁と接続し前記第1,第２の空気圧シリン
ダへの圧力空気の給排を切換える切換弁と、この切換弁
と第２の空気圧シリンダとの間に設け一方の入口側を前
記切換弁と接続するとともに他方の入口側を第１の空気
圧シリンダの検知孔に接続し出口側を第２の空気圧シリ
ンダに接続する第１の複式逆止弁と、この第１の複式逆
止弁の出口側に前記第２の空気圧シリンダとともに接続
し中継弁と第１の複式逆止弁とを連通する切換位置に前
記切換弁を切換える第１の空気パイロット部と，第２の
空気圧シリンダの検知孔に接続するとともにばね部材で
付勢され中継弁と第１の空気圧シリンダとを連通する切
換位置に前記切換弁を切換える第２の空気パイロット部
と、前記第1,第２の油圧シリンダの出口側を対向させて
入口側に接続する第２の複式逆止弁と、この第２の複式
逆止弁の出口側を分岐して第１の滑走防止弁を介して接
続した第１の作動シリンダと第２の滑走防止弁を介して
接続した第２の作動シリンダとから構成したことであ
る。(Means for Solving the Problems) The technical means for solving the above technical problems are the first and second pneumatic cylinders having detection holes near the full stroke position of the piston portion, and the first and second pneumatic cylinders. A first and a second hydraulic cylinder having a piston rod portion of the second pneumatic cylinder as a piston; and a switching valve connected to the relay valve for switching supply and discharge of the compressed air to the first and the second pneumatic cylinders. Provided between the switching valve and the second pneumatic cylinder, one inlet side is connected to the switching valve, the other inlet side is connected to the detection hole of the first pneumatic cylinder, and the outlet side is the second pneumatic cylinder. The first compound type check valve to be connected and the switching position for connecting the relay valve and the first compound type check valve to each other together with the second pneumatic cylinder on the outlet side of the first compound type check valve. A first air pilot section for switching the switching valve and A second air pilot portion connected to the detection hole of the second pneumatic cylinder and urged by a spring member to switch the switching valve to a switching position where the relay valve communicates with the first pneumatic cylinder; A second compound type check valve, which connects the outlet side of the second hydraulic cylinder to the inlet side, and an outlet side of the second compound type check valve are branched to form a first anti-skid valve. The first working cylinder is connected to the first working cylinder and the second working cylinder is connected via the second anti-skid valve.
（作用） 本発明による空気圧−油圧変換ブレーキシリンダ装置
は、第１の空気圧，油圧シリンダ及び第２の空気圧，油
圧シリンダのうちどちらか一方で２本の車軸に設けられ
た第1,第２の作動シリンダに油圧を供給する。(Operation) In the pneumatic-hydraulic conversion brake cylinder device according to the present invention, either one of the first pneumatic pressure, the hydraulic cylinder and the second pneumatic pressure, or the hydraulic cylinder is provided on two axles. Supply hydraulic pressure to the working cylinder.
すなわち、最初にばね部材の抗力により切換弁にて中
継弁と第１の空気圧シリンダとが連通されており、この
状態であるブレーキ指令により中継弁から圧力空気が供
給されるとこの圧力空気は第１の空気圧，油圧シリンダ
にて油圧に変換，増圧されこの油圧が第２の複式逆止弁
及び第1,第２の滑走防止弁を介して第1,第２の作動シリ
ンダに供給されブレーキ力を出力する。そして第1,第２
の滑走防止弁の作動により第１の空気圧シリンダのピス
トン部が移動して検知孔を超えると、中継弁からの圧力
空気はこの検知孔より第１の複式逆止弁の他方の入口側
を介して第１の空気パイロット部と第２の空気圧シリン
ダに供給される。すると第１の空気パイロット部が第２
の空気パイロット部のばね部材の抗力に反して切換弁を
切換え中継弁と第１の複式逆止弁の一方の入口側とを連
通させ、この中継弁からの圧力空気が第１の複式逆止弁
の一方の入口側より第１の空気パイロット部と第２の空
気圧シリンダに供給されて切換弁を切換位置に保持する
とともに第２の空気圧，油圧シリンダにて油圧に変換，
増圧され前述同様ブレーキ力を出力する。また、切換弁
の切換え動作により第１の空気圧シリンダは圧力空気が
排出されて復帰動作し、次のブレーキ作動に備えてい
る。そして第1,第２の滑走防止弁の作動により第２の空
気圧シリンダのピストン部が検知孔を超えると、中継弁
からの圧力空気はこの検知孔より第２の空気パイロット
部に供給される。このとき、第１の空気パイロット部に
も中継弁からの圧力空気が第１の複式逆止弁の一方の入
口側を介して供給されているが、第２の空気パイロット
部に設けられたばね部材の抗力により切換弁を切換え、
再び中継弁と第１の空気圧シリンダとを連通させて前述
同様ブレーキ力を出力させる。また、切換弁の切換動作
により第２の空気圧シリンダ及び第1,第２の空気パイロ
ット部の圧力空気が排出され、第２の空気圧シリンダが
復帰動作し、次のブレーキ作動に備える。That is, first, the relay valve and the first pneumatic cylinder are communicated with each other by the switching valve by the reaction force of the spring member, and when the pressure air is supplied from the relay valve by the brake command in this state, this pressure air is The air pressure of No. 1 is converted into an oil pressure by the hydraulic cylinder and increased, and this oil pressure is supplied to the first and second working cylinders via the second double check valve and the first and second anti-skid valves, and then braked. Output force. And the first and second
When the piston part of the first pneumatic cylinder moves and exceeds the detection hole due to the operation of the anti-skid valve, the pressure air from the relay valve passes through this detection hole through the other inlet side of the first double check valve. Are supplied to the first air pilot section and the second pneumatic cylinder. Then, the first air pilot section becomes the second
The switching valve is switched against the reaction force of the spring member of the air pilot portion of the relay valve and the relay valve is made to communicate with one inlet side of the first double check valve, and the pressure air from the relay valve causes the first double check valve. The first air pilot section and the second pneumatic cylinder are supplied from one inlet side of the valve to hold the switching valve at the switching position, and the second pneumatic pressure is converted into hydraulic pressure by the hydraulic cylinder.
The pressure is increased and the braking force is output as described above. Further, the first pneumatic cylinder releases the pressurized air by the switching operation of the switching valve and returns to the first pneumatic cylinder to prepare for the next brake operation. When the piston portion of the second pneumatic cylinder exceeds the detection hole due to the operation of the first and second skid prevention valves, the pressure air from the relay valve is supplied to the second air pilot portion through this detection hole. At this time, the pressure air from the relay valve is also supplied to the first air pilot portion through one inlet side of the first double check valve, but the spring member provided in the second air pilot portion is provided. The switching valve is switched by the drag force of
The relay valve and the first pneumatic cylinder are made to communicate with each other again to output the braking force as described above. In addition, the switching operation of the switching valve discharges the pressure air from the second pneumatic cylinder and the first and second air pilot portions, and the second pneumatic cylinder performs a return operation to prepare for the next brake operation.
このように、第１の空気圧，油圧シリンダ及び第２の
空気圧，油圧シリンダのうち常にどちらか一方を作動さ
せて、第1,第２の作動シリンダに油圧を供給し、前記第
１の空気圧，油圧シリンダ及び第２の空気圧，油圧シリ
ンダのどちらか一方が全ストロークする前に他方に切換
えるので車輪の滑走状態が何回起こっても常に滑走防止
弁を作動させてこの滑走状態を解除することができ、車
輪踏面を傷めることはない。In this way, one of the first air pressure, the hydraulic cylinder and the second air pressure, the hydraulic cylinder is always operated to supply the hydraulic pressure to the first and second operating cylinders, and the first air pressure, Since either the hydraulic cylinder, the second pneumatic pressure, or the hydraulic cylinder is switched to the other before the full stroke, it is possible to release the sliding condition by always operating the anti-skid valve regardless of the number of times the sliding condition of the wheel occurs. Yes, it does not damage the wheel tread.
（実施例） 以下本発明を適用した実施例を第１図に示す図面に基
づいて説明する。(Embodiment) An embodiment to which the present invention is applied will be described below with reference to the drawing shown in FIG.
図において空気圧−油圧変換ブレーキシリンダ装置
は、戻しばね9a,9bを有するとともに、ピストン部31a,3
1bの全ストローク位置近傍に検知孔10a,10bを有する第
1,第２の空気圧シリンダ2a,2bと、この空気圧シリンダ2
a,2bのピストンロッド部3a,3bをピストンとするととも
にピストンストローク始端及び終端位置近傍に供給口Ａ
およびＢを設けた第1,第２の油圧シリンダ4a,4bと、こ
れら第1,第２の油圧シリンダ4a,4bの供給口Ａに接続す
るとともに供給口Ｂに油圧シリンダ4a,4b側を順方向と
する逆止弁5a,5bを介して接続する油タンク６と、中継
弁１と第1,第２の空気圧シリンダ2a,2bとの間に設けこ
の第1,第２の空気圧シリンダ2a,2bへの圧力空気の給排
を切換える切換弁11と、この切換弁11と第２の空気圧シ
リンダ2bとの間に設け一方の入口側を前記切換弁11と接
続するとともに他方の入口側を第１の空気圧シリンダ2a
の検知孔10aと接続し出口側を第２の空気圧シリンダ2b
に接続する第１の複式逆止弁12と、この第１の複式逆止
弁12の出口側に前記第２の空気圧シリンダ2bとともに接
続し中継弁１と第１の複式逆止弁12の一方の入口側とを
連通する切換位置に切換弁11を切換える第１の空気パイ
ロット部11aと、第２の空気圧シリンダ2bの検知孔10bに
接続されるとともにばね部材11cで付勢され中継弁１と
第１の空気圧シリンダ2aとを連通する切換位置に切換弁
11を切換える第２の空気圧パイロット部11bと、前記第
1,第２の油圧シリンダ4a,4bの出口側を対向させて入口
側に接続する第２の複式逆止弁13と、この第２の複式逆
止弁13の出口側に接続するとともに油タンク６と接続し
第１の作動シリンダ8aへの油圧の給排を切換える第１の
滑走防止弁7aと第２の作動シリンダ8bへの油圧の給排を
切換える第２の滑走防止弁7bとから構成されている。第
１の作動シリンダ8aは一方の車軸に設けられた車輪にブ
レーキ力を出力し、第１の滑走防止弁7aはこの車輪が滑
走状態となると図外の滑走検知器により作動してこの滑
走状態を解除させる。第２の作動シリンダ8bは他方の車
軸に設けられた車輪にブレーキ力を出力し、第２の滑走
防止弁7bはこの車輪が滑走状態となると図外の滑走検知
器により作動してこの滑走状態を解除させるものであ
る。次にこの装置の作動について説明する。In the figure, the pneumatic-hydraulic conversion brake cylinder device has return springs 9a, 9b, and piston parts 31a, 3b.
1b with detection holes 10a and 10b near the full stroke position of 1b
1, the second pneumatic cylinder 2a, 2b and this pneumatic cylinder 2
Piston rods 3a and 3b of a and 2b are used as pistons, and a supply port A is provided near the start and end positions of the piston stroke.
And B are connected to the first and second hydraulic cylinders 4a and 4b and the supply ports A of these first and second hydraulic cylinders 4a and 4b, and the supply ports B are connected to the hydraulic cylinders 4a and 4b side in this order. Provided between the relay tank 1 and the first and second pneumatic cylinders 2a, 2b, and the oil tank 6 connected via the check valves 5a, 5b in the directional direction. A switching valve 11 for switching the supply and discharge of pressurized air to and from the switching valve 11 is provided between the switching valve 11 and the second pneumatic cylinder 2b. One inlet side is connected to the switching valve 11 and the other inlet side is 1 pneumatic cylinder 2a
Connected to the detection hole 10a of the second pneumatic cylinder 2b on the outlet side.
To the first compound type check valve 12 and one of the relay valve 1 and the first compound type check valve 12 connected to the outlet side of the first compound type check valve 12 together with the second pneumatic cylinder 2b. A first air pilot portion 11a that switches the switching valve 11 to a switching position that communicates with the inlet side of the relay valve 1 and a relay valve 1 that is connected to the detection hole 10b of the second pneumatic cylinder 2b and is biased by a spring member 11c. A switching valve at the switching position that communicates with the first pneumatic cylinder 2a
A second pneumatic pilot portion 11b for switching 11
A second compound check valve 13 in which the outlet sides of the first and second hydraulic cylinders 4a, 4b are opposed to each other and connected to the inlet side, and an oil tank which is connected to the outlet side of the second compound check valve 13 6, a first anti-skid valve 7a for switching the supply and discharge of hydraulic pressure to the first working cylinder 8a and a second anti-skid valve 7b for switching the supply and discharge of hydraulic pressure to the second working cylinder 8b. Has been done. The first actuating cylinder 8a outputs a braking force to the wheel provided on one axle, and the first anti-skid valve 7a is actuated by a slip detector (not shown) when the wheel is in the slipping state. To release. The second actuating cylinder 8b outputs a braking force to the wheel provided on the other axle, and the second anti-skid valve 7b is actuated by a slip detector (not shown) when the wheel is in the slipping state. Is to be released. Next, the operation of this device will be described.
最初に中継弁１から圧力空気が供給されていない場
合、ばね部材11cの抗力により切換弁11にて中継弁１と
第１の空気圧シリンダ2aとが連通されており、この状態
でブレーキ指令が発せられて中継弁１から圧力空気が供
給されるとこの圧力空気は第１の空気圧，油圧シリンダ
2a,4aにて油圧に変換，増圧されこの油圧が第２の複式
逆止弁13及び第1,第２の滑走防止弁7a,7bを介して第1,
第２の作動シリンダ8a,8bに供給され各車軸に設けられ
た車輪にブレーキ力を出力する。そして、このブレーキ
力により車輪が滑走状態となって第1,第２の滑走防止弁
7a,7bが作動すると第1,第２の作動シリンダ8a,8b内の油
圧を油タンク６内に逃がしてブレーキ力を緩め、滑走状
態の解除後再び第１の空気圧シリンダ2aのピストンロッ
ド部3aを図中右動して第1,第２の作動シリンダ8a,8bに
油圧を供給する。そして上記滑走状態が何回も起こりや
がて第１の空気圧シリンダ2aのピストン部31aが検知孔1
0aを超えると、中継弁１からの圧力空気はこの検知孔10
aより第１の複式逆止弁12の他方の入口側を介して第１
の空気パイロット部11aと第２の空気圧シリンダ2bに供
給される。すると第１の空気パイロット部11aがばね部
材11cの抗力に反して切換弁11を切換へ中継弁１と第１
の複式逆止弁12の一方の入口側とを連通させ、この中継
弁１からの圧力空気が第１の複式逆止弁12を介して第１
の空気パイロット部11aと第２の空気圧シリンダ2bに供
給されて切換弁11を切換位置に保持するとともに第２の
空気圧，油圧シリンダ2b,4bにて油圧に変換，増圧され
引き続き前述同様ブレーキ力を出力する。また、第１の
空気圧シリンダ2aは切換弁11から圧力空気が排出され戻
しばね9aの抗力により復帰動作し次のブレーキ作動に備
えている。First, when the pressurized air is not supplied from the relay valve 1, the relay valve 1 and the first pneumatic cylinder 2a are communicated by the switching valve 11 by the reaction force of the spring member 11c, and the brake command is issued in this state. When compressed air is supplied from the relay valve 1, the compressed air is supplied to the first air pressure hydraulic cylinder.
The oil pressure is converted into and increased by 2a and 4a, and this oil pressure is passed through the second double check valve 13 and the first and second skid prevention valves 7a and 7b to
The braking force is supplied to the wheels that are supplied to the second working cylinders 8a and 8b and are provided on each axle. The braking force causes the wheels to slide and the first and second anti-skid valves
When 7a and 7b operate, the hydraulic pressure in the first and second operating cylinders 8a and 8b is released into the oil tank 6 to relax the braking force, and after the sliding state is released, the piston rod portion 3a of the first pneumatic cylinder 2a is again released. To the right in the figure to supply hydraulic pressure to the first and second working cylinders 8a, 8b. Then, the sliding state occurs many times, and the piston portion 31a of the first pneumatic cylinder 2a is detected by the detection hole 1
When the pressure exceeds 0a, the pressure air from the relay valve 1 is detected by the detection hole 10
From a through the other inlet side of the first double check valve 12
Is supplied to the air pilot section 11a and the second pneumatic cylinder 2b. Then, the first air pilot portion 11a goes against the reaction force of the spring member 11c and switches the switching valve 11 to the switching state.
Of the double check valve 12 is communicated with one inlet side, and the pressure air from the relay valve 1 passes through the first double check valve 12 to the first side.
Is supplied to the air pilot section 11a and the second pneumatic cylinder 2b to hold the switching valve 11 at the switching position, and the second pneumatic pressure is converted to hydraulic pressure by the hydraulic cylinders 2b and 4b, and the pressure is continuously increased. Is output. In addition, the first pneumatic cylinder 2a prepares for the next brake operation by the compressed air discharged from the switching valve 11 and the return operation by the reaction force of the return spring 9a.
そして、第1,第２の滑走防止弁7a,7bの作動により第
２の空気圧シリンダ2bのピストン部31bが検知孔10bを超
えると、中継弁１からの圧力空気はこの検知孔10bより
第２の空気パイロット部11bに供給される。このとき、
第１の空気パイロット部11aにも中継弁１からの圧力空
気が第１の複式逆止弁12を介して供給されているが、第
２の空気パイロット部11bに設けられたばね部材11cの抗
力により切換弁11を切換え、再び中継弁１と第１の空気
圧シリンダ2aとを連通させて引き続き前述同様ブレーキ
力を出力させる。また、第２の空気圧シリンダ2bは切換
弁11から圧力空気が排出され戻しばね9bの抗力により復
帰動作し、第1,第２の空気パイロット部11a,11bの圧力
空気も切換弁11及び第２の空気圧シリンダ2bからそれぞ
れ排出され、次のブレーキ作動に備える。Then, when the piston portion 31b of the second pneumatic cylinder 2b exceeds the detection hole 10b due to the operation of the first and second skid prevention valves 7a and 7b, the pressure air from the relay valve 1 passes through the detection hole 10b to the second position. Is supplied to the air pilot section 11b. At this time,
The pressure air from the relay valve 1 is also supplied to the first air pilot portion 11a via the first double check valve 12, but due to the reaction force of the spring member 11c provided in the second air pilot portion 11b. The switching valve 11 is switched, the relay valve 1 and the first pneumatic cylinder 2a are made to communicate with each other again, and the braking force is continuously output as described above. Further, the second pneumatic cylinder 2b is returned by the pressure air discharged from the switching valve 11 and the reaction force of the return spring 9b, and the pressure air of the first and second air pilot portions 11a, 11b is also switched by the switching valve 11 and the second pneumatic cylinder 2b. Is discharged from each of the pneumatic cylinders 2b and prepared for the next brake operation.
上記のようにこの実施例によれば第１の空気圧，油圧
シリンダ2a,4a及び第２の空気圧，油圧シリンダ2b,4bの
うち常にどちらか一方で第1,第２の作動シリンダ8a,8b
に油圧を供給するとともに全ストロークする前に他方に
切換えるので車輪の滑走状態が何回起こっても常に第1,
第２の滑走防止弁7a,7bを作動させてこの滑走状態を解
除することができ、車輪踏面を傷めることはない。ま
た、第１の空気圧，油圧シリンダ2a,4a及び第２の空気
圧，油圧シリンダ2b,4bの全長を従来に較べて短かくす
ることができこれにより装置の軽量化を計ることができ
る。As described above, according to this embodiment, at least one of the first air pressure, the hydraulic cylinders 2a and 4a and the second air pressure and the hydraulic cylinders 2b and 4b is always used.
The hydraulic pressure is supplied to and the other is switched before the entire stroke, so no matter how many times the wheel slides,
This sliding state can be released by operating the second anti-skid valves 7a and 7b, and the wheel tread is not damaged. Further, the total length of the first pneumatic pressure, hydraulic cylinders 2a, 4a and the second pneumatic pressure, hydraulic cylinders 2b, 4b can be made shorter than in the conventional case, and the weight of the device can be reduced.
（発明の効果） 以上のように本発明による空気圧−油圧変換ブレーキ
シリンダ装置は、第１の空気圧，油圧シリンダ及び第２
の空気圧，油圧シリンダのうち常にどちらか一方を作動
させて第1,第２の作動シリンダに油圧を供給し、第１の
空気圧，油圧シリンダ及び第２の空気圧，油圧シリンダ
のどちらか一方が全ストロークする前に他方に切換える
ので車輪の滑走状態が何回起こっても常に第1,第２の滑
走防止弁を作動させてこの滑走状態を解除することがで
き、車輪踏面にフラット面を作ることが無いので、車両
の乗り心地が悪化することがない。また、第１の空気
圧，油圧シリンダ及び第２の空気圧，油圧シリンダの全
長を従来に較べて短かくすることができるから装置の軽
量化を計ることができる。(Effects of the Invention) As described above, the pneumatic-hydraulic conversion brake cylinder device according to the present invention includes the first pneumatic pressure, the hydraulic cylinder, and the second pneumatic cylinder.
One of the first air pressure, the hydraulic cylinder, the second air pressure, and the hydraulic cylinder is fully operated by operating either one of the air pressure and the hydraulic cylinder at all times to supply the hydraulic pressure to the first and second operating cylinders. Since it switches to the other before making a stroke, no matter how many times the wheel slides, the first and second anti-skid valves can always be activated to release this slide, creating a flat surface on the wheel tread. Since there is no, the ride comfort of the vehicle does not deteriorate. Further, since the total length of the first air pressure, the hydraulic cylinder and the second air pressure, the hydraulic cylinder can be made shorter than in the conventional case, the weight of the device can be reduced.
第１図は本発明による空気圧−油圧変換ブレーキシリン
ダ装置の全体図。 第２図は従来の空気圧−油圧変換ブレーキシリンダ装置
の全体図。 １……中継弁、2a……第１の空気圧シリンダ、2b……第
２の空気圧シリンダ、3a,3b……ピストンロッド部、31
a,31b……ピストン部、4a……第１の油圧シリンダ、4b
……第２の油圧シリンダ、7a……第１の滑走防止弁、7b
……第２の滑走防止弁、8a……第１の作動シリンダ、8b
……第２の作動シリンダ、10a,10b……検知孔、11……
切換弁、11a……第１の空気パイロット部、11b……第２
の空気パイロット部、11c……ばね部材、12……第１の
複式逆止弁、13……第２の複式逆止弁FIG. 1 is an overall view of a pneumatic-hydraulic conversion brake cylinder device according to the present invention. FIG. 2 is an overall view of a conventional pneumatic-hydraulic conversion brake cylinder device. 1 ... Relay valve, 2a ... First pneumatic cylinder, 2b ... Second pneumatic cylinder, 3a, 3b ... Piston rod part, 31
a, 31b …… Piston part, 4a …… First hydraulic cylinder, 4b
...... Second hydraulic cylinder, 7a ...... First anti-skid valve, 7b
...... Second anti-skid valve, 8a ...... First working cylinder, 8b
...... Second working cylinder, 10a, 10b ... Detection hole, 11 ...
Switching valve, 11a ... first air pilot section, 11b ... second
Air pilot section, 11c ... Spring member, 12 ... First double check valve, 13 ... Second double check valve
Claims (1)
孔を有する第1,第２の空気圧シリンダと、この第1,第２
の空気圧シリンダのピストンロッド部をピストンとする
第1,第２の油圧シリンダと、中継弁と接続し前記第1,第
２の空気圧シリンダへの圧力空気の給排を切換える切換
弁と、この切換弁と第２の空気圧シリンダとの間に設け
一方の入口側を前記切換弁と接続するとともに他方の入
口側を第１の空気圧シリンダの検知孔に接続し出口側を
第２の空気圧シリンダに接続する第１の複式逆止弁と、
この第１の複式逆止弁の出口側に前記第２の空気圧シリ
ンダとともに接続し中継弁と第１の複式逆止弁とを連通
する切換位置に前記切換弁を切換える第１の空気パイロ
ット部と，第２の空気圧シリンダの検知孔に接続すると
ともにばね部材で付勢され中継弁と第１の空気圧シリン
ダとを連通する切換位置に前記切換弁を切換える第２の
空気パイロット部と、前記第1,第２の油圧シリンダの出
口側を対向させて入口側に接続する第２の複式逆止弁
と、この第２の複式逆止弁の出口側を分岐して第１の滑
走防止弁を介して接続した第１の作動シリンダと第２の
滑走防止弁を介して接続した第２の作動シリンダとから
構成したことを特徴とする空気圧−油圧変換ブレーキシ
リンダ装置。1. A first and a second pneumatic cylinder having detection holes near the full stroke position of a piston portion, and the first and second pneumatic cylinders.
First and second hydraulic cylinders having a piston rod portion of the pneumatic cylinder as a piston, and a switching valve which is connected to a relay valve and switches between supply and discharge of pressurized air to and from the first and second pneumatic cylinders. Provided between the valve and the second pneumatic cylinder, one inlet side is connected to the switching valve, the other inlet side is connected to the detection hole of the first pneumatic cylinder, and the outlet side is connected to the second pneumatic cylinder. A first double check valve that:
A first air pilot portion which is connected to the outlet side of the first double check valve together with the second pneumatic cylinder and switches the switching valve to a switching position where the relay valve communicates with the first double check valve; A second air pilot portion connected to the detection hole of the second pneumatic cylinder and urged by a spring member to switch the switching valve to a switching position where the relay valve communicates with the first pneumatic cylinder; A second compound type check valve that connects the outlet side of the second hydraulic cylinder to the inlet side, and an outlet side of the second compound type check valve that branches off via the first anti-skid valve. A pneumatic-hydraulic conversion brake cylinder device, comprising a first working cylinder connected by means of a first working cylinder and a second working cylinder connected by way of a second anti-skid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234336A JP2514407B2 (en) | 1988-09-19 | 1988-09-19 | Pneumatic-hydraulic conversion brake cylinder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234336A JP2514407B2 (en) | 1988-09-19 | 1988-09-19 | Pneumatic-hydraulic conversion brake cylinder device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0281763A JPH0281763A (en) | 1990-03-22 |
| JP2514407B2 true JP2514407B2 (en) | 1996-07-10 |
Family
ID=16969396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63234336A Expired - Fee Related JP2514407B2 (en) | 1988-09-19 | 1988-09-19 | Pneumatic-hydraulic conversion brake cylinder device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514407B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4338204B2 (en) | 2005-03-30 | 2009-10-07 | Ｔｄｋ株式会社 | Soldering method, soldering apparatus, joining method and joining apparatus |
| CN104358807B (en) * | 2014-10-15 | 2017-06-23 | 中国石油集团西部钻探工程有限公司 | Band is stopped rig emergency stop (apparatus) |
-
1988
- 1988-09-19 JP JP63234336A patent/JP2514407B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0281763A (en) | 1990-03-22 |
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