JP2000272493A - Brake device of twin rear axle car - Google Patents
Brake device of twin rear axle carInfo
- Publication number
- JP2000272493A JP2000272493A JP11084153A JP8415399A JP2000272493A JP 2000272493 A JP2000272493 A JP 2000272493A JP 11084153 A JP11084153 A JP 11084153A JP 8415399 A JP8415399 A JP 8415399A JP 2000272493 A JP2000272493 A JP 2000272493A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- axle
- wheel
- air pressure
- output side
- 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
- Hydraulic Control Valves For Brake Systems (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、従動軸である後後
軸の軸重を駆動軸である後前軸に移動可能な軸重移動装
置を備えた後２軸車のブレーキ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake device for a rear two-axle vehicle provided with an axle load moving device capable of moving an axle load of a rear rear shaft as a driven shaft to a rear front shaft as a drive shaft.
【０００２】[0002]
【従来の技術】従来から、車両の後輪を２軸とした後２
軸車が主にトラック等で用いられてきている。この種の
後２軸車には、後前軸を駆動軸とし、後後軸を従動軸と
した方式のものがある。この方式では、荷が積まれてい
ない空車時や低μ路あるいは急坂における走行時に、後
前軸の軸重が小さくなるため十分な駆動力が得られなく
なることがある。2. Description of the Related Art Conventionally, a rear wheel having two rear wheels is used.
Axles are mainly used in trucks and the like. Among such rear two-axle wheels, there is a type in which a rear front shaft is used as a drive shaft and a rear rear shaft is used as a driven shaft. In this method, when the vehicle is running empty or when traveling on a low μ road or a steep slope, no sufficient driving force may be obtained because the axle weight of the rear front shaft is reduced.
【０００３】そこで、駆動側の車軸となる後前軸に加わ
る軸重を可変可能に構成した軸重移動装置が提案されて
いる。例えば特開平８−１９７９２８号公報には、トラ
ニオン方式サスペンションにおける軸重移動装置の詳細
が示されている。この装置は、車軸と車体フレームとの
間に伸縮可能なゴム製のエアスプリング（空気袋）を介
装し、空車時など駆動軸が空転するおそれのある場合
に、エアスプリングへ圧縮エアを供給して、エアスプリ
ングの作動により、従動軸である後後軸に加わっていた
軸重を駆動軸である後前軸へ移動させて、後前軸の分担
荷重を増加させようとするものである。[0003] Therefore, there has been proposed an axle load moving device configured to be able to change the axle load applied to the rear front axle, which is the driving axle. For example, JP-A-8-197928 discloses details of an axle load moving device in a trunnion type suspension. This device interposes a rubber air spring (air bag) that can expand and contract between the axle and the body frame, and supplies compressed air to the air spring when there is a risk that the drive shaft idles when the vehicle is idle. Then, by operating the air spring, the axial load applied to the rear rear shaft, which is the driven shaft, is moved to the rear front shaft, which is the drive shaft, so as to increase the shared load of the rear front shaft. .
【０００４】また、別方式であるエアサスペンションで
は、軸重移動装置は例えば図４に示すように構成され
る。すなわち本装置は、駆動軸としての後前軸４１と従
動軸としての後後軸４２にエアスプリング４３、４４を
それぞれ配置し、このエアスプリング４３、４４にエア
通路４５を介してエアタンク４７からエア圧を供給す
る。エアスプリング４３側のエア通路にはエアプレッシ
ャーセンサー４８が設けられ、またエアスプリング４４
側のエア通路にはエアプレッシャーセンサー４９及び軸
重調製Ｍ／Ｖ５０が設けられる。軸重の移動を行う場合
は、軸重移動ＳＷ５１をオンとする。これにより電子制
御装置（ＥＣＵ）５２は、エアプレッシャーセンサー４
８、４９を介してエアスプリング４３側及び４４側のエ
ア通路のエア圧を検出し、軸重調製Ｍ／Ｖ５０を制御し
てエアスプリング４３と４４のエア圧力バランスを変化
させ、積載量に応じて軸重を後前軸４１に移動させる。In another type of air suspension, the axle load moving device is configured as shown in FIG. 4, for example. That is, in the present apparatus, air springs 43 and 44 are arranged on a rear front shaft 41 as a drive shaft and a rear rear shaft 42 as a driven shaft, respectively, and air is supplied from the air tank 47 to the air springs 43 and 44 via an air passage 45. Supply pressure. An air pressure sensor 48 is provided in an air passage on the side of the air spring 43.
An air pressure sensor 49 and an axle load adjustment M / V 50 are provided in the air passage on the side. To move the axle load, the axle load movement SW 51 is turned on. As a result, the electronic control unit (ECU) 52 controls the air pressure sensor 4
The air pressure in the air passages on the air spring 43 side and the 44 side is detected through 8 and 49, and the axle load adjustment M / V 50 is controlled to change the air pressure balance between the air springs 43 and 44, and according to the load capacity. The shaft weight is moved to the rear front shaft 41.
【０００５】[0005]
【発明が解決しようとする課題】このような軸重移動装
置を備えた後２軸車では、軸重移動により、後前軸の軸
重が後後軸の軸重に比べて大きくなる。このため、アン
チロックブレーキシステム（ＡＢＳ）を装着した車両の
場合、後２軸に等しい制動力をかけると、後後軸が低減
速度でロックしやすくなり、制動時の車両安定性が損な
われるおそれがある。In a rear two-axle equipped with such an axle load moving device, the axle load of the rear front axle becomes larger than that of the rear axle due to the axle load movement. For this reason, in the case of a vehicle equipped with an anti-lock brake system (ABS), if the same braking force is applied to the rear two axes, the rear rear axis is likely to lock at a reduced speed, and vehicle stability during braking may be impaired. There is.
【０００６】これを防止するためには、後後軸のみにロ
ードセンシングバルブ（ＬＳＶ）を設け、このＬＳＶを
作動して後後軸の制動力を抑制し、これによって後後軸
における早期ロックの発生を回避することが考えられ
る。しかしながら、ＡＢＳにより後軸の左右輪の独立制
御を行うには、左右輪用にそれぞれ１つずつの計２つの
高価なＬＳＶを設置する必要がある。さらに、発進時及
び加速時等の車輪のスリップを制御するアンチスリップ
レギュレーション（ＡＳＲ）の付加されたブレーキ装置
では、上述の２つのＬＳＶに加えてＡＳＲ作動時に後後
軸車輪への制動作動圧を遮断するＡＳＲカットオフバル
ブを各ＬＳＶに直列にそれぞれ１つずつ計２つ配置しな
ければならないという問題がある。In order to prevent this, a load sensing valve (LSV) is provided only on the rear rear shaft, and the LSV is operated to suppress the braking force on the rear rear shaft. It is possible to avoid occurrence. However, in order to perform independent control of the rear left and right wheels by the ABS, it is necessary to install two expensive LSVs, one each for the left and right wheels. Further, in a brake device to which anti-slip regulation (ASR) for controlling the slip of the wheels at the time of starting and acceleration, etc., in addition to the two LSVs described above, the braking operation pressure to the rear rear axle wheels at the time of ASR operation is controlled. There is a problem that a total of two ASR cutoff valves to be shut off must be arranged in series with each LSV.
【０００７】従って本発明の目的は、上述のような問題
点を解決し、低コストで制動時の車両安定性を確保でき
る後２軸車のブレーキ装置を提供することにある。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a brake device for a rear two-axle vehicle which can solve the above-mentioned problems and can secure vehicle stability at the time of braking at low cost.
【０００８】[0008]
【課題を解決するための手段】上記目的は、ブレーキバ
ルブからの信号圧に応じてエアタンクからのエア圧をホ
イルシリンダ側に出力するリレーバルブと、リレーバル
ブの出力側と後前軸右側車輪のホイルシリンダとの間、
および上記リレーバルブの出力側と後前軸左側車輪のホ
イルシリンダとの間に各々介装され、車両の状態に応じ
て後軸側のホイルシリンダへの供給エア圧を制御するＡ
ＢＳバルブと、リレーバルブの出力側の圧力を車両の積
載状況に応じて制御し後後軸側に供給するロードセンシ
ングバルブと、後後軸車輪の左右に各々設けられ、左右
各々のＡＢＳバルブの出力側とロードセンシングバルブ
の出力側とが入力接続されて、入力されるエア圧の低い
側を選択して後後軸車輪のホイルシリンダに供給する弁
装置とから構成した後２軸車のブレーキ装置により、達
成される。SUMMARY OF THE INVENTION It is an object of the present invention to provide a relay valve for outputting air pressure from an air tank to a wheel cylinder in accordance with a signal pressure from a brake valve, a relay valve output side and a rear front axle right wheel. Between the wheel cylinder,
A which is interposed between the output side of the relay valve and the wheel cylinder of the rear left front wheel and controls the air pressure supplied to the rear wheel cylinder in accordance with the state of the vehicle.
A BS valve, a load sensing valve that controls the pressure on the output side of the relay valve in accordance with the loading situation of the vehicle and supplies the rear rear axle side, and a left and right ABS valve respectively provided on the left and right of the rear rear axle wheel. An output side and an output side of a load sensing valve are input-connected, and a valve device for selecting a side having a low input air pressure and supplying the selected air pressure to a wheel cylinder of a rear rear axle wheel. This is achieved by the device.
【０００９】また、ＡＳＲの付加されたブレーキ装置の
場合は、入力側がエアタンクに接続され車両の状態に応
じて開閉制御されるＡＳＲバルブと、リレーバルブの出
力側とＡＳＲバルブの出力側とが入力接続されて、入力
される圧力の高い側を選択してホイルシリンダ側に供給
するダブルチェックバルブとを、上述の構成に付加す
る。この場合、ＡＢＳバルブは、このダブルチェックバ
ルブの出力側と後前軸車輪のホイルシリンダとの間に介
装される。このように構成することにより、ＡＢＳによ
る後後軸の左右輪の独立制御を１つのＬＳＶを用いて行
うことができ、また、ＡＳＲの付加されたブレーキ装置
では、従来のようなＡＳＲカットオフバルブも省略でき
るので、後２軸車のブレーキ装置における制動時の車両
安定性を低コストで実現することができる。In the case of a brake device having an ASR, an ASR valve whose input side is connected to an air tank and which is opened / closed according to the state of the vehicle, an output side of a relay valve and an output side of the ASR valve are input. A double check valve that is connected and selects the high input pressure side and supplies it to the wheel cylinder side is added to the above-described configuration. In this case, the ABS valve is interposed between the output side of the double check valve and the wheel cylinder of the rear front axle wheel. With such a configuration, independent control of the left and right wheels of the rear rear axle by the ABS can be performed using one LSV. In a brake device to which an ASR is added, a conventional ASR cut-off valve is provided. Therefore, vehicle stability during braking in the brake device of the rear two-axle vehicle can be realized at low cost.
【００１０】[0010]
【発明の実施の形態】図１は、本発明に係る後２軸車の
ブレーキ装置の一実施例を示す図である（尚、前輪のブ
レーキラインは省略）。本実施例では、図のように、後
前軸車輪のホイルシリンダ１、２は、それぞれＡＢＳバ
ルブ（ＡＢＳ／Ｖ）３、４、リレーバルブ５を介してエ
アタンク７に接続され、後後軸車輪のホイルシリンダ
８、９は、それぞれダブルカットオフバルブ（Ｄ．Ｃ．
Ｏ／Ｖ）１０、１１、ＡＢＳバルブ３、４又はロードセ
ンシングバルブ（ＬＳＶ）１２、リレーバルブ５を介し
てエアタンク７に接続される。FIG. 1 is a view showing an embodiment of a brake device for a rear two-axle vehicle according to the present invention (a brake line for front wheels is omitted). In this embodiment, the wheel cylinders 1 and 2 of the rear front axle are connected to an air tank 7 via ABS valves (ABS / V) 3 and 4 and a relay valve 5, respectively. Wheel cylinders 8 and 9 are respectively provided with double cut-off valves (D.C.
O / V) 10, 11, ABS valves 3, 4 or load sensing valve (LSV) 12, and relay valve 5 are connected to air tank 7.
【００１１】本実施例の動作は次のとおりである。ま
ず、ブレーキペダルが踏み込まれると、ブレーキバルブ
６からの信号圧に応じてエアタンク７からのエア圧がリ
レーバルブ５を介してＡＢＳバルブ３、４に流入したの
ち、下流のホイルシリンダ１側に供給される。ＬＳＶ１
２は、リレーバルブ５の出力側の圧力を車両の積載状況
に応じて制御し後後軸側に供給する。Ｄ．Ｃ．Ｏ／Ｖ１
０、１１は、後後軸車輪の左右にそれぞれ設けられる弁
装置であって、一方の入力口がＬＳＶ１２の出力側に接
続され、もう一方の入力口が左右各々のＡＢＳバルブ
３、４の出力側に接続されており、両入力口のエア圧の
低い側を選択して後後軸車輪のホイルシリンダ８、９に
供給する。The operation of this embodiment is as follows. First, when the brake pedal is depressed, the air pressure from the air tank 7 flows into the ABS valves 3 and 4 via the relay valve 5 in accordance with the signal pressure from the brake valve 6 and is then supplied to the downstream wheel cylinder 1 side. Is done. LSV1
2 controls the pressure on the output side of the relay valve 5 according to the loading condition of the vehicle and supplies the pressure to the rear axle side. D. C. O / V1
Numerals 0 and 11 denote valve devices provided on the left and right of the rear rear axle wheel, respectively. One input port is connected to the output side of the LSV 12 and the other input port is the output of each of the left and right ABS valves 3 and 4. Side, and the side with the lower air pressure of both input ports is selected and supplied to the wheel cylinders 8, 9 of the rear rear axle wheels.
【００１２】図２は、Ｄ．Ｃ．Ｏ／Ｖ１０、１１の構成
例を示す断面図である。このバルブは、図に示すよう
に、２つの入力口２１、２２と１つの出力口２３を有す
る。バルブ内部には、部材２４、２５が両者を連結する
部材２６とともに２つの入力口の左右方向に移動可能に
配置されている。例えば、いま、入力口２１側のエア圧
が入力口２２側のエア圧よりも高い場合、両者の圧力差
によって、エア圧の高い入力口２１側の部材２４が図の
右側に移動し、これに伴いエア圧の低い入力口２２側の
部材２５が図の右側に移動する。これにより、部材２５
と入力口２２の内壁との間に隙間が生じ、図中の破線で
示すように、この隙間を介して入力口２２側のエア圧が
出力口２３に供給される。このようにして、Ｄ．Ｃ．Ｏ
／Ｖ１０、１１は、両入力口のエア圧の低い側を選択し
て出力する。FIG. C. It is sectional drawing which shows the example of a structure of O / V10,11. This valve has two input ports 21 and 22 and one output port 23 as shown in the figure. Inside the valve, members 24 and 25 are arranged movably in the left-right direction of the two input ports together with a member 26 connecting the two. For example, if the air pressure on the input port 21 side is higher than the air pressure on the input port 22 side, the member 24 on the input port 21 side with a high air pressure moves to the right side in the drawing due to the pressure difference between them. Accordingly, the member 25 on the side of the input port 22 having a low air pressure moves to the right side in the drawing. Thereby, the member 25
A gap is formed between the input port 22 and the inner wall of the input port 22, and the air pressure on the input port 22 side is supplied to the output port 23 through the gap as shown by a broken line in the drawing. In this way, D.I. C. O
/ V10 and / V11 select and output the lower air pressure side of both input ports.
【００１３】このように構成することにより、ＡＢＳ非
作動時には、後前軸車輪のホイルシリンダ１、２にはブ
レーキバルブエア圧が直接流れるのに対して、後後軸車
輪のホイルシリンダ８、９にはＤ．Ｃ．Ｏ／Ｖ１０、１
１を通してＬＳＶ１２により減圧したエア圧を流すこと
ができる。したがって、ＡＢＳを装着した車両の場合で
も、高価なＬＳＶの設置は最小限の１つだけで、空車時
や低μ路あるいは急坂における走行時に、後後軸のみエ
ア圧を減少させることが可能となる。これにより、後後
軸車輪が低減速度でロックされることがなくなり、制動
時の安定性を確保することができる。また、ＡＢＳ作動
時においても、ＡＢＳバルブ３、４による減圧されたエ
ア圧もしくはＬＳＶ１２により減圧されたエア圧の圧力
の低い方がＤ．Ｃ．Ｏ／Ｖ１０、１１により選択され常
に低い側の圧力が後後軸車輪に作用するため、後後軸車
輪の早期ロックが抑制される。尚、この場合には、ＡＢ
Ｓバルブ出口側の圧力がＬＳＶ１２の出口側圧力よりも
低い場合のみ、後後軸車輪がＡＢＳの機能を果すことと
なる。本実施例では、Ｄ．Ｃ．Ｏ／Ｖが２つ設置される
が、ＬＳＶの設置数が半減するため全体として低コスト
となる。With this configuration, when the ABS is not operated, the brake valve air pressure flows directly to the wheel cylinders 1 and 2 of the rear front axle wheels, whereas the wheel cylinders 8 and 9 of the rear rear axle wheels. D. C. O / V10, 1
1 allows the air pressure reduced by the LSV 12 to flow. Therefore, even in the case of a vehicle equipped with ABS, it is possible to reduce the air pressure of only the rear rear axle when the vehicle is idle, running on a low μ road or on a steep slope with only one minimum installation of an expensive LSV. Become. As a result, the rear rear axle wheel is not locked at the reduced speed, and stability during braking can be secured. Also, during the ABS operation, the lower of the air pressure reduced by the ABS valves 3 and 4 or the air pressure reduced by the LSV 12, the lower the D.V. C. Since the low pressure always selected by the O / Vs 10 and 11 acts on the rear rear axle, early locking of the rear rear axle is suppressed. In this case, AB
Only when the pressure on the outlet side of the S valve is lower than the pressure on the outlet side of the LSV 12, the rear rear axle wheel performs the function of the ABS. In this embodiment, D.E. C. Although two O / Vs are installed, the number of LSVs is reduced by half, so that the cost is reduced as a whole.
【００１４】図３は、本発明に係る後２軸車のブレーキ
装置の他の実施例を示す図である。本実施例はアンチス
リップレギュレーション（ＡＳＲ）の付加されたブレー
キ装置に関するものであり、図示のとおり、ＡＳＲバル
ブ（ＡＳＲ／Ｖ）３３と、ダブルチェックバルブ（Ｄ．
Ｃ／Ｖ）３１とが設けられる。ＡＳＲバルブ３３は入力
側がエアタンク７に接続されている。またＤ．Ｃ／Ｖ３
１は、リレーバルブ５の出力側とＡＳＲバルブ３３の出
力側とが入力されて圧力の高い方を選択してホイルシリ
ンダ側に供給する。ＡＢＳバルブ３、４は、Ｄ．Ｃ／Ｖ
３１の出力側と後前軸車輪のホイルシリンダとの間に介
装される。その他の構成は、図１の構成と同様である。FIG. 3 is a diagram showing another embodiment of the brake device for a rear two-axle vehicle according to the present invention. This embodiment relates to a brake device to which anti-slip regulation (ASR) is added, and as shown, an ASR valve (ASR / V) 33 and a double check valve (D.R.
C / V) 31 are provided. The input side of the ASR valve 33 is connected to the air tank 7. D. C / V3
In 1, the output side of the relay valve 5 and the output side of the ASR valve 33 are input and the higher pressure is selected and supplied to the wheel cylinder side. ABS valves 3 and 4 are C / V
31 and the wheel cylinder of the rear front axle. Other configurations are the same as those in FIG.
【００１５】本実施例の動作は次のとおりである。ま
ず、ブレーキペダルが踏み込まれると、ブレーキバルブ
６からの信号圧に応じてエアタンク７からのエア圧がリ
レーバルブ５を介して出力される。ここでＤ．Ｃ／Ｖ３
１は、リレーバルブ５の出力とＡＳＲバルブ３３の出力
を入力し、両者のうち圧力の高い方を選択してＡＢＳバ
ルブ３、４を介してホイルシリンダ１、２に供給する。
一方、ＬＳＶ１２はリレーバルブ５の出力側の圧力を車
両の積載状況に応じて制御し後後軸側に供給する。Ｄ．
Ｃ．Ｏ／Ｖ１０、１１は、ＬＳＶ１２の出力とＡＢＳバ
ルブ３、４の出力を入力し、両入力口のエア圧の低い側
を選択して後後軸車輪のホイルシリンダ８、９に供給す
る。本実施例では、このように構成することにより、Ａ
ＳＲ機能が付加された場合においても、図１の実施例と
同様な効果を得ることができるとともに、ＡＳＲの付加
に伴い左右にそれぞれ設けられるＡＳＲカットオフバル
ブを省略することができる。ここでは、Ｄ．Ｃ．Ｏ／Ｖ
が２つとＤ．Ｃ／Ｖが１つ設置されるが、ＬＳＶの設置
数が半減し且つＡＳＲカットオフバルブの設置が不要と
なるため、全体として低コストとなる。The operation of this embodiment is as follows. First, when the brake pedal is depressed, the air pressure from the air tank 7 is output via the relay valve 5 in accordance with the signal pressure from the brake valve 6. Here, D. C / V3
1 inputs the output of the relay valve 5 and the output of the ASR valve 33, selects the higher one of the two, and supplies it to the wheel cylinders 1 and 2 via the ABS valves 3 and 4.
On the other hand, the LSV 12 controls the pressure on the output side of the relay valve 5 according to the loading condition of the vehicle and supplies the pressure to the rear axle side. D.
C. The O / Vs 10 and 11 receive the output of the LSV 12 and the outputs of the ABS valves 3 and 4 and select the low air pressure side of both input ports to supply to the wheel cylinders 8 and 9 of the rear rear axle wheels. In the present embodiment, with this configuration, A
Even when the SR function is added, the same effect as that of the embodiment of FIG. 1 can be obtained, and the ASR cut-off valves provided on the left and right with the addition of the ASR can be omitted. Here, D. C. O / V
Are two and D. Although one C / V is installed, the number of LSVs is reduced by half and the installation of an ASR cut-off valve is not required, so that the cost is reduced as a whole.
【００１６】[0016]
【発明の効果】本発明によれば、低コストでかつ制動時
の車両安定性を確保できる後２軸車のブレーキ装置を得
ることができる。According to the present invention, it is possible to obtain a brake device for a rear two-axle vehicle which is low in cost and can secure vehicle stability during braking.
【図１】本発明に係る後２軸車のブレーキ装置の一実施
例を示す図である。FIG. 1 is a diagram showing an embodiment of a brake device for a rear two-axle vehicle according to the present invention.
【図２】ダブルカットオフバルブの構成例を示す断面図
である。FIG. 2 is a cross-sectional view illustrating a configuration example of a double cut-off valve.
【図３】本発明に係る後２軸車のブレーキ装置の他の実
施例を示す図である。FIG. 3 is a view showing another embodiment of a brake device for a rear two-axle vehicle according to the present invention.
【図４】軸重移動装置を備えたエアサスペンションの一
例を示す概略図である。FIG. 4 is a schematic view showing an example of an air suspension provided with an axle load moving device.
１、２、８、９ ホイルシリンダ ３、４ ＡＢＳバルブ ５ リレーバルブ ６ ブレーキバルブ ７ エアタンク １０、１１ ダブルカットオフバルブ １２ロードセンシングバルブ 1, 2, 8, 9 Wheel cylinder 3, 4 ABS valve 5 Relay valve 6 Brake valve 7 Air tank 10, 11 Double cut-off valve 12 Load sensing valve
Claims (2)
る後前軸に移動可能な軸重移動装置を備えた後２軸車の
ブレーキ装置であって、ブレーキバルブからの信号圧に
応じてエアタンクからのエア圧をホイルシリンダ側に出
力するリレーバルブと、リレーバルブの出力側と後前軸
右側車輪のホイルシリンダとの間、および上記リレーバ
ルブの出力側と後前軸左側車輪のホイルシリンダとの間
に各々介装され、車両の状態に応じて後軸側のホイルシ
リンダへの供給エア圧を制御するＡＢＳバルブと、リレ
ーバルブの出力側の圧力を車両の積載状況に応じて制御
し後後軸側に供給するロードセンシングバルブと、後後
軸車輪の左右に各々設けられ、左右各々のＡＢＳバルブ
の出力側とロードセンシングバルブの出力側とが入力接
続されて、入力されるエア圧の低い側を選択して後後軸
車輪のホイルシリンダに供給する弁装置と、から構成し
たことを特徴とするブレーキ装置。1. A brake device for a rear two-axle vehicle equipped with an axle load moving device capable of moving an axle load of a rear rear shaft as a driven shaft to a rear front shaft as a drive shaft, wherein a signal from a brake valve is provided. A relay valve that outputs the air pressure from the air tank to the wheel cylinder according to the pressure, between the output side of the relay valve and the wheel cylinder of the right wheel on the rear front shaft, and between the output side of the relay valve and the left side on the rear front shaft An ABS valve that is interposed between the wheel cylinders of the wheels and controls the air pressure supplied to the wheel cylinders on the rear axle side according to the state of the vehicle, and the pressure on the output side of the relay valve changes the loading condition of the vehicle. A load sensing valve that is controlled and supplied to the rear rear axle side, and is provided on each of the left and right sides of the rear rear axle wheel. The output side of each of the left and right ABS valves and the output side of the load sensing valve are input connected. Is And a valve device for selecting a low air pressure side and supplying the selected air pressure to a wheel cylinder of a rear rear axle wheel.
る後前軸に移動可能な軸重移動装置を備えた後２軸車の
ブレーキ装置であって、ブレーキバルブからの信号圧に
応じてエアタンクからのエア圧をホイルシリンダ側に出
力するリレーバルブと、入力側がエアタンクに接続され
車両の状態に応じて開閉制御されるＡＳＲバルブと、リ
レーバルブの出力側とＡＳＲバルブの出力側とが入力接
続されて、入力されるエア圧力の高い側を選択してホイ
ルシリンダ側に供給するダブルチェックバルブと、ダブ
ルチェックバルブの出力側と後前軸右側車輪のホイルシ
リンダとの間、および上記ダブルチェックバルブの出力
側と後前軸左側車輪のホイルシリンダとの間に各々介装
され、車両の状態に応じて後軸側のホイルシリンダへの
供給エア圧を制御するＡＢＳバルブと、リレーバルブの
出力側の圧力を車両の積載状況に応じて制御し後後軸側
に供給するロードセンシングバルブと、後後軸車輪の左
右に各々設けられ、左右各々のＡＢＳバルブの出力側と
ロードセンシングバルブの出力側とが入力接続されて、
入力されるエア圧の低い側を選択して後後軸車輪のホイ
ルシリンダに供給する弁装置と、から構成したことを特
徴とするブレーキ装置。2. A brake device for a rear two-axle vehicle having an axle load moving device capable of moving an axle weight of a rear rear axle as a driven shaft to a rear front axle as a drive shaft, wherein a signal from a brake valve is provided. A relay valve that outputs the air pressure from the air tank to the wheel cylinder according to the pressure, an ASR valve whose input side is connected to the air tank and that is opened and closed according to the state of the vehicle, an output side of the relay valve and an output of the ASR valve The double check valve is connected to the input side and the side with the higher input air pressure is selected and supplied to the wheel cylinder side, and between the output side of the double check valve and the wheel cylinder of the rear front right shaft wheel, And between the output side of the double check valve and the wheel cylinder of the rear left front wheel, to control the air pressure supplied to the rear wheel cylinder in accordance with the state of the vehicle. An ABS valve, a load sensing valve that controls the pressure on the output side of the relay valve in accordance with the loading condition of the vehicle and supplies the rear rear axle side, and an ABS valve provided on each of the left and right rear axle wheels. Is connected to the output side of the load sensing valve.
A valve device for selecting a low input air pressure side and supplying the selected air pressure to a wheel cylinder of a rear rear axle wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08415399A JP3726542B2 (en) | 1999-03-26 | 1999-03-26 | Rear 2-axle car brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08415399A JP3726542B2 (en) | 1999-03-26 | 1999-03-26 | Rear 2-axle car brake device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000272493A true JP2000272493A (en) | 2000-10-03 |
| JP3726542B2 JP3726542B2 (en) | 2005-12-14 |
Family
ID=13822573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08415399A Expired - Lifetime JP3726542B2 (en) | 1999-03-26 | 1999-03-26 | Rear 2-axle car brake device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3726542B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100456536B1 (en) * | 2001-12-26 | 2004-11-10 | 현대자동차주식회사 | The control method and the same method of brake oil pressure in according to oil pressure in pusher axle |
| CN107771141A (en) * | 2015-04-22 | 2018-03-06 | 克诺尔商用车制动***有限公司 | Automobile-use parking and braking mechanism |
-
1999
- 1999-03-26 JP JP08415399A patent/JP3726542B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100456536B1 (en) * | 2001-12-26 | 2004-11-10 | 현대자동차주식회사 | The control method and the same method of brake oil pressure in according to oil pressure in pusher axle |
| CN107771141A (en) * | 2015-04-22 | 2018-03-06 | 克诺尔商用车制动***有限公司 | Automobile-use parking and braking mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3726542B2 (en) | 2005-12-14 |
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