JP2001247030A - Braking device for tractor/trailer connecting vehicle - Google Patents

Braking device for tractor/trailer connecting vehicle

Info

Publication number
JP2001247030A
JP2001247030A JP2000063202A JP2000063202A JP2001247030A JP 2001247030 A JP2001247030 A JP 2001247030A JP 2000063202 A JP2000063202 A JP 2000063202A JP 2000063202 A JP2000063202 A JP 2000063202A JP 2001247030 A JP2001247030 A JP 2001247030A
Authority
JP
Japan
Prior art keywords
parking
driven
brake
compressed air
air
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
Application number
JP2000063202A
Other languages
Japanese (ja)
Other versions
JP3815939B2 (en
Inventor
Tatsuo Sawada
辰生 澤田
Katsu Hayama
克 端山
Shigeru Ito
茂 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hino Motors Ltd filed Critical Hino Motors Ltd
Priority to JP2000063202A priority Critical patent/JP3815939B2/en
Publication of JP2001247030A publication Critical patent/JP2001247030A/en
Application granted granted Critical
Publication of JP3815939B2 publication Critical patent/JP3815939B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Braking Systems And Boosters (AREA)
  • Regulating Braking Force (AREA)
  • Safety Valves (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce consumption of compressed air and to reduce capacity of an air tank or the like. SOLUTION: A driven side control valve 16 supplies/discharges compressed air within the air tank 12 for parking to a driven side service brake 13 based on air pressure of a signal port 16a and a parking brake control valve 18 delivers compressed air within the air tank 12 for parking to the signal port 16a based on manipulated variable of a parking brake lever 18a. A protection valve 21 for delivering compressed air of maximum pressure from the air tank 12 for parking to the signal port 16a when the parking brake lever 18a is released and allowing a part of compressed air to remain in the signal port 16a at the time of a maximum operation of the parking brake lever 18a is provided on a driven side parking signal pipe line. The driven side control valve 16 discharges compressed air of the driven side service brake 13 when the parking brake lever 18a is released and supplies compressed air of necessary minimum pressure when the driven side parking brake 13 is used to the driven side service brake 13.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、トラクタ・トレー
ラ連結車のトレーラ(従動)側のブレーキ装置に関する
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trailer (driven) brake device for a tractor / trailer coupled vehicle.

【0002】[0002]

【従来の技術】従来、この種のブレーキ装置として、図
4に示すように、駐車用エアタンク2と従動側サービス
ブレーキ3との間に設けられた従動側制御弁6が従動側
サービスブレーキ3に給排される駐車用エアタンク2内
の圧縮エアの圧力を信号ポート6aのエア圧に基づいて
制御し、駐車用エアタンク2と信号ポート6aとの間に
設けられた駐車ブレーキ制御弁8が駐車ブレーキレバー
8aの操作量に応じ駐車用エアタンク2内の圧縮エアを
所定圧に制御して信号ポート6aに送出するように構成
されたエアブレーキシステム1が知られている(特開平
9−58442号公報の明細書の従来技術)。
2. Description of the Related Art Conventionally, as a brake device of this type, as shown in FIG. 4, a driven control valve 6 provided between a parking air tank 2 and a driven service brake 3 is provided to the driven service brake 3. The pressure of the compressed air in the parking air tank 2 to be supplied / discharged is controlled based on the air pressure of the signal port 6a, and the parking brake control valve 8 provided between the parking air tank 2 and the signal port 6a controls the parking brake. There is known an air brake system 1 configured to control compressed air in a parking air tank 2 to a predetermined pressure in accordance with an operation amount of a lever 8a and to send the compressed air to a signal port 6a (Japanese Patent Laid-Open No. 9-58442). Of the prior art).

【0003】このエアブレーキシステム1では、サービ
ス用エアタンク4と従動側制御弁6との間にサービスブ
レーキ制御弁7が設けられ、この制御弁7はブレーキペ
ダル7aの踏込み量に応じサービス用エアタンク4内の
圧縮エアを所定圧に制御して従動側制御弁6に送出する
ように構成される。更に従動側制御弁6は駐車ブレーキ
制御弁8による従動側制御弁6から従動側サービスブレ
ーキ3への圧力と、サービスブレーキ制御弁7による従
動側制御弁6から従動側サービスブレーキ3への圧力の
うち、大きい方の圧力の圧縮エアを選択して従動側サー
ビスブレーキ3に供給するように構成される。
In the air brake system 1, a service brake control valve 7 is provided between the service air tank 4 and the driven side control valve 6, and the control valve 7 operates according to the amount of depression of a brake pedal 7a. The compressed air inside is controlled to a predetermined pressure and sent to the driven control valve 6. Further, the driven control valve 6 controls the pressure of the parking brake control valve 8 from the driven control valve 6 to the driven service brake 3 and the pressure of the service brake control valve 7 from the driven control valve 6 to the driven service brake 3. Among them, the compressed air having the larger pressure is selected and supplied to the driven service brake 3.

【0004】具体的には、図3の破線で示すように、駐
車用エアタンク2の内圧を0.85MPaとした場合、
駐車ブレーキレバー8aを解除して信号ポート6aに
0.85MPaの圧縮エアが送出されると、従動側制御
弁6は従動側サービスブレーキ3から圧縮エアを排出し
て従動側サービスブレーキ3の圧力を0MPaにし、駐
車ブレーキレバー8aを最大操作して信号ポート6aか
ら圧縮エアを排出して信号ポート6aの圧力を0MPa
にすると、従動側制御弁6は従動側サービスブレーキ3
に駐車用エアタンク2の圧縮エアに近い圧力(0.75
MPa)の圧縮エアを供給するように構成される。
More specifically, as shown by a broken line in FIG. 3, when the internal pressure of the parking air tank 2 is set to 0.85 MPa,
When the parking brake lever 8a is released and compressed air of 0.85 MPa is sent to the signal port 6a, the driven side control valve 6 discharges compressed air from the driven side service brake 3 to reduce the pressure of the driven side service brake 3. 0 MPa, the parking brake lever 8a is operated to the maximum, and the compressed air is discharged from the signal port 6a to reduce the pressure of the signal port 6a to 0 MPa.
, The driven control valve 6 is driven by the driven service brake 3
The pressure near the compressed air in the parking air tank 2 (0.75
(MPa).

【0005】このように構成されたエアブレーキシステ
ム1では、駐車ブレーキレバー8aを解除すると、駐車
用エアタンク2から信号ポート6aに駐車用エアタンク
2内圧と同圧の圧縮エアが送出される(0.85MP
a)ので、従動側制御弁6は従動側サービスブレーキ3
の圧縮エアを排出する。連結車が走行している状態でブ
レーキペダル7aを踏込むと、サービスブレーキ制御弁
7がブレーキペダル7aの踏込み量に応じサービス用エ
アタンク4内の圧縮エアを所定圧に制御して従動側制御
弁6に送出するので、上記サービス用エアタンク4内の
エア圧と略同圧の圧縮エアが従動側サービスブレーキ3
に供給される(0.75MPa)。この結果、連結車は
減速する。一方、連結車を駐車場に停止して駐車ブレー
キレバー8aを最大操作すると、信号ポート6aの圧縮
エアが排出されるので(0MPa)、従動側制御弁6は
駐車用エアタンク2内圧に近い圧力(0.75MPa)
の圧縮エアを従動側サービスブレーキ3に供給する。こ
の結果、従動側サービスブレーキ3が従動側駐車ブレー
キとして機能する。
In the air brake system 1 configured as described above, when the parking brake lever 8a is released, compressed air having the same pressure as the internal pressure of the parking air tank 2 is sent from the parking air tank 2 to the signal port 6a (0. 85MP
a), the driven control valve 6 is connected to the driven service brake 3
Discharge compressed air. When the brake pedal 7a is depressed in a state where the connected vehicle is traveling, the service brake control valve 7 controls the compressed air in the service air tank 4 to a predetermined pressure in accordance with the amount of depression of the brake pedal 7a, thereby controlling the driven side control valve. , The compressed air having substantially the same pressure as the air pressure in the service air tank 4 is supplied to the driven service brake 3.
(0.75 MPa). As a result, the connected vehicle decelerates. On the other hand, when the connected vehicle is stopped in the parking lot and the parking brake lever 8a is operated to the maximum, the compressed air of the signal port 6a is discharged (0 MPa), so that the driven control valve 6 applies a pressure close to the internal pressure of the parking air tank 2 (0 MPa). 0.75MPa)
Is supplied to the driven side service brake 3. As a result, the driven service brake 3 functions as a driven parking brake.

【0006】[0006]

【発明が解決しようとする課題】しかし、図4に示され
た従来のエアブレーキシステムでは、駐車ブレーキレバ
ーを最大操作して連結車を駐車するときに、駐車用エア
タンク内圧と略同圧の圧縮エアが従動側サービスブレー
キに供給される、即ち必要以上に大きな圧力の圧縮エア
が従動側サービスブレーキに供給されるため、駐車用エ
アタンク内の圧縮エアの消費量が多い不具合があった。
本発明の目的は、圧縮エアの消費量を低減することがで
き、エアタンク等のエア機器の容量を小さくすることが
できる、トラクタ・トレーラ連結車のブレーキ装置を提
供することにある。
However, in the conventional air brake system shown in FIG. 4, when the parking brake lever is operated to the maximum and the connected vehicle is parked, the same pressure as that in the parking air tank is compressed. Since the air is supplied to the driven service brake, that is, the compressed air having an unnecessarily large pressure is supplied to the driven service brake, there is a problem in that the consumption of the compressed air in the parking air tank is large.
An object of the present invention is to provide a brake device for a tractor / trailer coupled vehicle that can reduce the consumption of compressed air and reduce the capacity of air equipment such as an air tank.

【0007】[0007]

【課題を解決するための手段】請求項1に係る発明は、
図1に示すように、駐車用エアタンク12と従動側サー
ビスブレーキ13とを連通接続する従動側駐車管路14
に設けられ従動側サービスブレーキ13に給排される駐
車用エアタンク12内の圧縮エアの圧力を信号ポート1
6aのエア圧に基づいて制御する従動側制御弁16と、
駐車用エアタンク12と上記信号ポート16aとを連通
接続する従動側駐車信号管路17に設けられ駐車ブレー
キレバー18aの操作量に応じ駐車用エアタンク12内
の圧縮エアを所定圧に制御して信号ポート16aに送出
する駐車ブレーキ制御弁18とを備えたトラクタ・トレ
ーラ連結車のブレーキ装置の改良である。その特徴ある
構成は、駐車ブレーキレバー18aの解除時に駐車用エ
アタンク12から信号ポート16aに駐車用エアタンク
12内圧と同圧の圧縮エアを送出しかつ駐車ブレーキレ
バー18aの最大操作時に信号ポート16aに上記圧縮
エアの一部を残留させるプロテクションバルブ21が従
動側駐車信号管路に設けられたところにある。
The invention according to claim 1 is
As shown in FIG. 1, a driven parking line 14 that connects and connects the parking air tank 12 and the driven service brake 13 is provided.
The pressure of the compressed air in the parking air tank 12 supplied to and discharged from the driven side service brake 13 provided at the
Driven side control valve 16 for controlling based on the air pressure of 6a,
The compressed air in the parking air tank 12 is controlled to a predetermined pressure in accordance with the operation amount of the parking brake lever 18a, which is provided in a driven side parking signal line 17 that connects the parking air tank 12 and the signal port 16a. This is an improvement of the brake device of the tractor / trailer combination vehicle provided with the parking brake control valve 18 to be sent to 16a. The characteristic configuration is that when the parking brake lever 18a is released, compressed air having the same pressure as the internal pressure of the parking air tank 12 is sent from the parking air tank 12 to the signal port 16a when the parking brake lever 18a is fully operated, and The protection valve 21 for leaving a part of the compressed air is provided in the driven-side parking signal line.

【0008】この請求項1に記載されたトラクタ・トレ
ーラ連結車のブレーキ装置では、駐車ブレーキレバー1
8aの解除時に従動側制御弁16が従動側サービスブレ
ーキ13の圧縮エアを排出し、駐車ブレーキレバー18
aの最大操作時に従動側制御弁16が駐車用エアタンク
12内圧より低くかつ従動側サービスブレーキ13の従
動側駐車ブレーキとしての使用時に必要な最小圧力の圧
縮エアを従動側サービスブレーキ13に供給する。この
結果、圧縮エアの消費量を低減することができ、エアタ
ンク等のエア機器の容量を小さくすることができる。
In the brake device for a tractor / trailer coupled vehicle according to the first aspect, the parking brake lever 1
8a, the driven control valve 16 discharges the compressed air of the driven service brake 13 and the parking brake lever 18
During the maximum operation of a, the driven-side control valve 16 supplies the driven-side service brake 13 with compressed air that is lower than the internal pressure of the parking air tank 12 and has the minimum pressure required when the driven-side service brake 13 is used as the driven-side parking brake. As a result, the consumption of compressed air can be reduced, and the capacity of air equipment such as an air tank can be reduced.

【0009】[0009]

【発明の実施の形態】次に本発明の実施の形態を図面に
基づいて説明する。図1に示すように、トラクタ・トレ
ーラ連結車のブレーキ装置11は駐車用エアタンク12
と従動側サービスブレーキ13とを連通接続する従動側
駐車管路14に設けられた従動側制御弁16と、駐車用
エアタンク12と従動側制御弁16の信号ポート16a
とを連通接続する従動側駐車信号管路17に設けられた
駐車ブレーキ制御弁18とを備える。従動側サービスブ
レーキ13は圧縮エアの給排と内蔵スプリング(図示せ
ず)の弾性力によりプランジャ19aがケース19bか
ら出没する従動側ブレーキチャンバ19と、プランジャ
19aの出没により従動側ブレーキドラム(図示せず)
に圧接され或いは従動側ブレーキドラムから離脱する従
動側ブレーキシュー(図示せず)とを有する。従動側ブ
レーキチャンバ19に圧縮エアが供給されると、プラン
ジャ19aがケース19bから突出して従動側ブレーキ
シューが従動側ブレーキドラムに圧接される。また従動
側ブレーキチャンバ19から圧縮エアが排出されると、
プランジャ19aがケース19bに引込んで従動側ブレ
ーキシューが従動側ブレーキドラムから離脱するように
構成される。従動側制御弁16は従動側ブレーキチャン
バ19に給排される駐車用エアタンク12内の圧縮エア
の圧力を従動側制御弁16の信号ポート16aのエア圧
に基づいて制御し、駐車ブレーキ制御弁18は駐車ブレ
ーキレバー18aの操作量に応じ駐車用エアタンク12
内の圧縮エアを所定圧に制御して信号ポート16aに送
出するように構成される。
Embodiments of the present invention will now be described with reference to the drawings. As shown in FIG. 1, a brake device 11 of a tractor / trailer coupled vehicle includes a parking air tank 12.
And a driven control valve 16 provided in a driven parking line 14 that connects the driven service brake 13 with the driven air, a signal port 16a of the parking air tank 12 and the driven control valve 16
And a parking brake control valve 18 provided in a driven-side parking signal conduit 17 that communicates with the vehicle. The driven service brake 13 includes a driven brake chamber 19 in which a plunger 19a protrudes and retracts from a case 19b by the supply and discharge of compressed air and the elastic force of a built-in spring (not shown), and a driven brake drum (not shown) which protrudes and retracts the plunger 19a. Z)
And a driven-side brake shoe (not shown) that is pressed into contact with or separated from the driven-side brake drum. When the compressed air is supplied to the driven brake chamber 19, the plunger 19a protrudes from the case 19b, and the driven brake shoe is pressed against the driven brake drum. When the compressed air is discharged from the driven side brake chamber 19,
The plunger 19a is retracted into the case 19b, and the driven brake shoe is detached from the driven brake drum. The driven control valve 16 controls the pressure of the compressed air in the parking air tank 12 supplied to and discharged from the driven brake chamber 19 based on the air pressure at the signal port 16 a of the driven control valve 16. Is the parking air tank 12 according to the operation amount of the parking brake lever 18a.
It is configured to control the compressed air in the inside to a predetermined pressure and send it to the signal port 16a.

【0010】駐車ブレーキ制御弁18と従動側制御弁1
6との間の従動側駐車信号管路17にはプロテクション
バルブ21が設けられる。このプロテクションバルブ2
1は図2に示すように、内部に弁体収容室22aが形成
されたバルブケース22と、弁体収容室22aに摺動可
能に収容された弁体23とを有する。バルブケース22
の一方の側面には弁体収容室22aと駐車ブレーキ制御
弁18とを連通する第1通孔22bが形成され、バルブ
ケース22の下面には弁体収容室22aと信号ポート1
6aとを連通する第2通孔22cが形成される。また弁
体収容室22aには第1通孔22bと第2通孔22cと
を遮断する方向に弁体23を付勢する圧縮コイルばね2
4が収容される。図1に戻って、上記プロテクションバ
ルブ21は駐車ブレーキレバー18aの解除時に駐車用
エアタンク12から信号ポート16aに駐車用エアタン
ク12内圧と同圧の圧縮エアを送出し、かつ駐車ブレー
キレバー18aの最大操作時に信号ポート16aに上記
圧縮エアの一部を残留させるように構成される。
The parking brake control valve 18 and the driven side control valve 1
6 is provided with a protection valve 21 in the driven side parking signal line 17. This protection valve 2
As shown in FIG. 2, 1 has a valve case 22 in which a valve body housing chamber 22a is formed, and a valve body 23 slidably housed in the valve body housing chamber 22a. Valve case 22
A first through hole 22b is formed on one side of the valve body 22 to communicate the valve body housing chamber 22a and the parking brake control valve 18, and the valve body housing chamber 22a and the signal port 1 are formed on the lower surface of the valve case 22.
A second through hole 22c communicating with the second through hole 6a is formed. A compression coil spring 2 for urging the valve body 23 in a direction of blocking the first through hole 22b and the second through hole 22c is provided in the valve body housing chamber 22a.
4 are accommodated. Returning to FIG. 1, the protection valve 21 sends out compressed air having the same pressure as the internal pressure of the parking air tank 12 from the parking air tank 12 to the signal port 16a when the parking brake lever 18a is released, and the maximum operation of the parking brake lever 18a. At times, a portion of the compressed air is left in the signal port 16a.

【0011】また駐車ブレーキレバー18aの解除時に
は従動側制御弁16は従動側ブレーキチャンバ19の圧
縮エアを排出し、駐車ブレーキレバー18aの最大操作
時には従動側制御弁16は駐車用エアタンク12内圧よ
り低くかつ従動側ブレーキチャンバ19の従動側駐車ブ
レーキとしての使用時に必要な最小圧力の圧縮エアを従
動側ブレーキチャンバ19に供給するように構成され
る。具体例で説明すれば、図3の実線で示すように、駐
車用エアタンク12の内圧を0.85MPaとした場
合、駐車ブレーキレバー18aを解除して信号ポートに
0.85MPaの圧縮エアが送出されると、従動側制御
弁16は従動側ブレーキチャンバ19から圧縮エアを排
出して従動側ブレーキチャンバ19の圧力を0MPaに
し、駐車ブレーキレバー18aを最大操作して信号ポー
ト16aに0.40MPaの圧縮エアが送出されると、
従動側制御弁16は従動側ブレーキチャンバ19に0.
35MPaの圧縮エアを供給するように構成される。
When the parking brake lever 18a is released, the driven control valve 16 discharges the compressed air in the driven brake chamber 19, and when the parking brake lever 18a is fully operated, the driven control valve 16 is lower than the internal pressure of the parking air tank 12. Further, compressed air having a minimum pressure required when the driven brake chamber 19 is used as a driven parking brake is supplied to the driven brake chamber 19. Specifically, as shown by the solid line in FIG. 3, when the internal pressure of the parking air tank 12 is set to 0.85 MPa, the parking brake lever 18a is released and compressed air of 0.85 MPa is sent to the signal port. Then, the driven-side control valve 16 discharges compressed air from the driven-side brake chamber 19 to reduce the pressure of the driven-side brake chamber 19 to 0 MPa, and operates the parking brake lever 18a to the maximum to compress 0.40 MPa to the signal port 16a. When the air is delivered,
The driven-side control valve 16 has a 0.
It is configured to supply compressed air of 35 MPa.

【0012】また従動側制御弁16には従動側サービス
管路27を介してサービス用エアタンク26が連通接続
され、この従動側サービス管路27にはサービスブレー
キ制御弁28が設けられる。この制御弁28はブレーキ
ペダル28aの踏込み量に応じサービス用エアタンク2
6内の圧縮エアを所定圧に制御して従動側制御弁16に
送出するように構成される。従動側制御弁16は駐車ブ
レーキ制御弁18による従動側制御弁16から従動側ブ
レーキチャンバ19への圧力と、サービスブレーキ制御
弁28による従動側制御弁16から従動側ブレーキチャ
ンバ19への圧力のうち、大きい方の圧力の圧縮エアを
選択して従動側ブレーキチャンバ19に供給するように
構成される。
A service air tank 26 is connected to the driven side control valve 16 via a driven side service line 27, and a service brake control valve 28 is provided in the driven side service line 27. The control valve 28 controls the service air tank 2 according to the amount of depression of the brake pedal 28a.
It is configured to control the compressed air in 6 to a predetermined pressure and send it to the driven control valve 16. The driven control valve 16 includes a pressure from the driven control valve 16 to the driven brake chamber 19 by the parking brake control valve 18 and a pressure from the driven control valve 16 to the driven brake chamber 19 by the service brake control valve 28. , The compressed air having the larger pressure is selected and supplied to the driven brake chamber 19.

【0013】一方、駐車用エアタンク12は駆動側駐車
管路31を介して駆動側駐車ブレーキ32に連通接続さ
れ、駆動側駐車管路31には駆動側駐車リレーバルブ3
3が設けられる。駆動側駐車リレーバルブ33には信号
ポート33aが設けられ、この信号ポート33aは駆動
側駐車信号管路34を介して駐車ブレーキ制御弁18に
連通接続される。駆動側駐車リレーバルブ33は駐車ブ
レーキ制御弁18からの信号圧に基づいて駆動側駐車ブ
レーキ32に駐車用エアタンク12内の圧縮エアを給排
するように構成される。また駆動側駐車ブレーキ32は
圧縮エアの給排と内蔵スプリング(図示せず)の弾性力
によりプランジャ36aがケース36bから出没する駆
動側駐車ブレーキチャンバ36と、プランジャ36aの
出没により駆動側駐車ブレーキドラム(図示せず)に圧
接され或いは駆動側駐車ブレーキドラムから離脱する駆
動側駐車ブレーキシュー(図示せず)とを有する。
On the other hand, the parking air tank 12 is connected to a driving side parking brake 32 through a driving side parking line 31, and the driving side parking relay valve 3 is connected to the driving side parking line 31.
3 are provided. The driving side parking relay valve 33 is provided with a signal port 33a, and the signal port 33a is connected to the parking brake control valve 18 via a driving side parking signal line 34. The driving side parking relay valve 33 is configured to supply and discharge the compressed air in the parking air tank 12 to the driving side parking brake 32 based on the signal pressure from the parking brake control valve 18. The driving-side parking brake 32 includes a driving-side parking brake chamber 36 in which a plunger 36a protrudes and retracts from a case 36b by supply and discharge of compressed air and the elastic force of a built-in spring (not shown), and a driving-side parking brake drum by protruding and retracting the plunger 36a. (Not shown) or a driving-side parking brake shoe (not shown) that is released from the driving-side parking brake drum.

【0014】駐車ブレーキレバー18aの解除時には、
駐車用エアタンク12から駆動側駐車リレーバルブ33
の信号ポート33aに駐車用エアタンク12内圧と同圧
の圧縮エアが送出され、これにより駆動側駐車ブレーキ
チャンバ36に圧縮エアが供給され、プランジャ36a
がケース36bに引込んで駆動側駐車ブレーキシューが
駆動側駐車ブレーキドラムから離脱するように構成され
る。また駐車ブレーキレバー18aの最大操作時には、
駆動側駐車リレーバルブ33の信号ポート33aの圧縮
エアが排出され、これにより駆動側駐車ブレーキチャン
バ36の圧縮エアが排出され、プランジャ36aがケー
ス36bから突出して駆動側駐車ブレーキシューが駆動
側駐車ブレーキドラムに圧接されるように構成される。
この駆動側駐車ブレーキ32はトラクタの駐車ブレーキ
としてのみ使用され、トラクタを制動するサービスブレ
ーキとしては使用されない。即ち、トラクタを制動する
サービスブレーキは図示しないが別に設けられる。
When releasing the parking brake lever 18a,
From the parking air tank 12 to the driving side parking relay valve 33
Compressed air having the same pressure as the internal pressure of the parking air tank 12 is sent to the signal port 33a, thereby supplying compressed air to the driving side parking brake chamber 36, and the plunger 36a
Is drawn into the case 36b so that the driving side parking brake shoe is separated from the driving side parking brake drum. Also, at the time of the maximum operation of the parking brake lever 18a,
The compressed air of the signal port 33a of the driving side parking relay valve 33 is discharged, whereby the compressed air of the driving side parking brake chamber 36 is discharged, the plunger 36a protrudes from the case 36b, and the driving side parking brake shoe is driven. It is configured to be pressed against the drum.
The driving side parking brake 32 is used only as a parking brake of the tractor, and is not used as a service brake for braking the tractor. That is, a service brake for braking the tractor is provided separately, not shown.

【0015】このように構成されたトラクタ・トレーラ
連結車のブレーキ装置の動作を前述した具体例に基づい
て説明する。エンジンを始動して暖機運転が完了し、駐
車ブレーキレバー18aを解除すると、駐車用エアタン
ク12から従動側制御弁16の信号ポート16aに駐車
用エアタンク12内圧と同圧(0.85MPa)の圧縮
エアが送出されるので、従動側制御弁16は従動側ブレ
ーキチャンバ19の圧縮エアを排出し、プランジャ19
aがケース19bに引込んで従動側ブレーキシューが従
動側ブレーキドラムから離脱する。同時に駐車用エアタ
ンク12から駆動側駐車リレーバルブ33の信号ポート
33aに駐車用エアタンク12内圧と同圧の圧縮エアが
送出されるので、駆動側駐車リレーバルブ33が駆動側
駐車ブレーキチャンバ36に圧縮エアを供給し、プラン
ジャ36aがケース36bに引込んで駆動側駐車ブレー
キシューが駆動側駐車ブレーキドラムから離脱する。
The operation of the brake device for a tractor / trailer coupled vehicle constructed as described above will be described based on the above-described specific example. When the engine is started and the warm-up operation is completed, and the parking brake lever 18a is released, the compression (0.85 MPa) of the same pressure as the internal pressure of the parking air tank 12 is applied from the parking air tank 12 to the signal port 16a of the driven control valve 16. Since the air is delivered, the driven control valve 16 discharges the compressed air in the driven brake chamber 19 and the plunger 19
a is drawn into the case 19b, and the driven brake shoe is separated from the driven brake drum. Simultaneously, compressed air having the same pressure as the internal pressure of the parking air tank 12 is sent from the parking air tank 12 to the signal port 33a of the driving side parking relay valve 33, so that the driving side parking relay valve 33 sends compressed air to the driving side parking brake chamber 36. The plunger 36a is retracted into the case 36b, and the driving side parking brake shoe is separated from the driving side parking brake drum.

【0016】従動側サービスブレーキ13からの圧縮エ
アの排出により、従動側サービスブレーキ13は不作動
になり、駆動側駐車ブレーキチャンバ36への圧縮エア
の供給により、駆動側駐車ブレーキ32が不作動になる
ので、アクセルペダル(図示せず)を踏込むと連結車は
走行し始める。連結車が走行している状態でブレーキペ
ダル28aを踏込むと、サービスブレーキ制御弁28が
ブレーキペダル28aの踏込み量に応じサービス用エア
タンク26内の圧縮エアを所定圧に制御して従動側制御
弁16に送出するので、上記サービス用エアタンク26
内のエア圧と略同圧の圧縮エアが従動側サービスブレー
キ13に供給される。この結果、連結車は減速する。
The discharge of the compressed air from the driven side service brake 13 causes the driven side service brake 13 to be deactivated, and the supply of the compressed air to the driving side parking brake chamber 36 deactivates the driving side parking brake 32. Therefore, when the accelerator pedal (not shown) is depressed, the connected vehicle starts running. When the brake pedal 28a is depressed while the connected vehicle is traveling, the service brake control valve 28 controls the compressed air in the service air tank 26 to a predetermined pressure in accordance with the amount of depression of the brake pedal 28a, thereby controlling the driven side control valve. 16 to the service air tank 26
The compressed air having substantially the same pressure as the internal air pressure is supplied to the driven side service brake 13. As a result, the connected vehicle decelerates.

【0017】一方、連結車を駐車場に停止して駐車ブレ
ーキレバー18aを最大操作すると、従動側制御弁16
の信号ポート16aに上記圧縮エアの一部が残留するた
め(信号ポート16aの圧力:0.4MPa)、従動側
制御弁16が駐車用エアタンク12内圧より低くかつ従
動側サービスブレーキ13の従動側駐車ブレーキとして
の使用時に必要な最小圧力(0.35MPa)の圧縮エ
アを従動側ブレーキチャンバ19に供給する。この結
果、従動側サービスブレーキ19が従動側駐車ブレーキ
として機能する。また従動側ブレーキチャンバ19に供
給される圧縮エアの量は比較的少ないので(従動側駐車
ブレーキとして機能するために必要な最小圧の圧縮エ
ア)、圧縮エアの消費量を低減することができる。この
結果、駐車用エアタンク12,コンプレッサ(図示せ
ず),エアドライヤ(図示せず)等のエア機器の容量を
小さくできる、即ち駐車用エアタンク12等のエア機器
を小型化することができる。
On the other hand, when the connected vehicle is stopped in the parking lot and the parking brake lever 18a is fully operated, the driven control valve 16
(Particular pressure of the signal port 16a: 0.4 MPa), the driven control valve 16 is lower than the internal pressure of the parking air tank 12 and the driven service brake 13 is driven. Compressed air of a minimum pressure (0.35 MPa) required for use as a brake is supplied to the driven brake chamber 19. As a result, the driven service brake 19 functions as a driven parking brake. Further, since the amount of compressed air supplied to the driven side brake chamber 19 is relatively small (the minimum pressure of compressed air required to function as the driven side parking brake), the consumption of compressed air can be reduced. As a result, the capacity of the air equipment such as the parking air tank 12, the compressor (not shown), and the air dryer (not shown) can be reduced, that is, the air equipment such as the parking air tank 12 can be downsized.

【0018】[0018]

【発明の効果】以上述べたように、本発明によれば、駐
車ブレーキレバーの解除時に駐車用エアタンクから従動
側制御弁の信号ポートに駐車用エアタンク内圧と同圧の
圧縮エアを送出しかつ駐車ブレーキレバーの最大操作時
に上記信号ポートに上記圧縮エアの一部を残留させるプ
ロテクションバルブを従動側駐車信号管路に設けたの
で、駐車ブレーキレバーの解除時に従動側制御弁が従動
側サービスブレーキの圧縮エアを排出し、駐車ブレーキ
レバーの最大操作時に従動側制御弁が駐車用エアタンク
内圧より低くかつ従動側サービスブレーキの従動側駐車
ブレーキとしての使用時に必要な最小圧力の圧縮エアを
従動側サービスブレーキに供給する。この結果、圧縮エ
アの消費量を低減することができるので、エアタンク等
のエア機器の容量を小さくできる、即ちエアタンク等の
エア機器を小型化することができる。
As described above, according to the present invention, when the parking brake lever is released, the compressed air having the same pressure as the internal pressure of the parking air tank is sent from the parking air tank to the signal port of the driven control valve and the parking is performed. A protection valve that allows a part of the compressed air to remain in the signal port when the brake lever is fully operated is provided in the driven side parking signal line, so that when the parking brake lever is released, the driven side control valve compresses the driven side service brake. When the parking brake lever is fully operated, the driven control valve is lower than the parking air tank internal pressure and the compressed air with the minimum pressure required when the driven service brake is used as the driven parking brake is released to the driven service brake. Supply. As a result, the consumption of the compressed air can be reduced, so that the capacity of the air device such as the air tank can be reduced, that is, the size of the air device such as the air tank can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明実施形態トラクタ・トレーラ連結車のブ
レーキ装置のエア回路構成図。
FIG. 1 is an air circuit configuration diagram of a brake device of a tractor / trailer coupled vehicle according to an embodiment of the present invention.

【図2】そのプロテクションバルブの断面図。FIG. 2 is a sectional view of the protection valve.

【図3】発明の実施の形態のブレーキ装置及び従来例の
ブレーキ装置における、信号ポートのエア圧変化に対す
る従動側ブレーキチャンバのエア圧変化を示す図。
FIG. 3 is a diagram showing a change in air pressure of a driven brake chamber with respect to a change in air pressure of a signal port in the brake device according to the embodiment of the invention and the brake device according to the related art.

【図4】従来例を示す図1に対応するエア回路構成図。FIG. 4 is an air circuit configuration diagram corresponding to FIG. 1 showing a conventional example.

【符号の説明】[Explanation of symbols]

11 ブレーキ装置 12 駐車用エアタンク 13 従動側サービスブレーキ 14 従動側駐車管路 16 従動側制御弁 16a 信号ポート 17 従動側駐車信号管路 18 駐車ブレーキ制御弁 18a 駐車ブレーキレバー 21 プロテクションバルブ Reference Signs List 11 brake device 12 parking air tank 13 driven service brake 14 driven parking line 16 driven control valve 16a signal port 17 driven parking signal line 18 parking brake control valve 18a parking brake lever 21 protection valve

───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 茂 東京都日野市日野台3丁目1番地1 日野 自動車株式会社内 Fターム(参考) 3D046 AA04 BB00 BB15 CC03 EE02 LL03 LL14 LL19 LL26 LL29 3D048 AA02 BB57 BB59 CC44 HH05 HH22 HH24 HH37 HH44 HH48 HH59 QQ12 3H059 AA05 BB40 CD05 EE13 FF03 FF13 FF16  ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Shigeru Ito 3-1-1, Hinodai, Hino-shi, Tokyo Hino Motor Co., Ltd. F-term (reference) 3D046 AA04 BB00 BB15 CC03 EE02 LL03 LL14 LL19 LL26 LL29 3D048 AA02 BB57 BB59 CC44 HH05 HH22 HH24 HH37 HH44 HH48 HH59 QQ12 3H059 AA05 BB40 CD05 EE13 FF03 FF13 FF16

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 駐車用エアタンク(12)と従動側サービス
ブレーキ(13)とを連通接続する従動側駐車管路(14)に設
けられ前記従動側サービスブレーキ(13)に給排される前
記駐車用エアタンク(12)内の圧縮エアの圧力を信号ポー
ト(16a)のエア圧に基づいて制御する従動側制御弁(16)
と、前記駐車用エアタンク(12)と前記信号ポート(16a)
とを連通接続する従動側駐車信号管路(17)に設けられ駐
車ブレーキレバー(18a)の操作量に応じ前記駐車用エア
タンク(12)内の圧縮エアを所定圧に制御して前記信号ポ
ート(16a)に送出する駐車ブレーキ制御弁(18)とを備え
たトラクタ・トレーラ連結車のブレーキ装置において、 前記駐車ブレーキレバー(18a)の解除時に前記駐車用エ
アタンク(12)から前記信号ポート(16a)に前記駐車用エ
アタンク(12)内圧と同圧の圧縮エアを送出しかつ前記駐
車ブレーキレバー(18a)の最大操作時に前記信号ポート
(16a)に前記圧縮エアの一部を残留させるプロテクショ
ンバルブ(21)が前記従動側駐車信号管路(17)に設けら
れ、 前記駐車ブレーキレバー(18a)の解除時に前記従動側制
御弁(16)が前記従動側サービスブレーキ(13)の圧縮エア
を排出し、 前記駐車ブレーキレバー(18a)の最大操作時に前記従動
側制御弁(16)が前記駐車用エアタンク(12)内圧より低く
かつ前記従動側サービスブレーキ(13)の従動側駐車ブレ
ーキとしての使用時に必要な最小圧力の圧縮エアを前記
従動側サービスブレーキ(13)に供給するように構成され
たことを特徴とするトラクタ・トレーラ連結車のブレー
キ装置。
1. A parking system which is provided in a driven parking line (14) for connecting and connecting a parking air tank (12) and a driven service brake (13) and is supplied to and discharged from the driven service brake (13). Driven control valve (16) that controls the pressure of compressed air in the air tank (12) based on the air pressure at the signal port (16a)
And the parking air tank (12) and the signal port (16a)
The compressed air in the parking air tank (12) is controlled to a predetermined pressure in accordance with the operation amount of the parking brake lever (18a) provided in the driven side parking signal conduit (17) that communicates the A parking brake control valve (18) for delivering to the tractor / trailer coupled vehicle (16), wherein the parking air tank (12) is released from the signal port (16a) when the parking brake lever (18a) is released. The compressed air tank (12) sends compressed air having the same pressure as the internal pressure to the parking air tank (12), and the signal port is operated when the parking brake lever (18a) is operated at the maximum.
A protection valve (21) for allowing a part of the compressed air to remain in (16a) is provided in the driven-side parking signal line (17), and when the parking brake lever (18a) is released, the driven-side control valve (16 ) Discharges the compressed air of the driven side service brake (13), and when the parking brake lever (18a) is in maximum operation, the driven side control valve (16) is lower than the internal pressure of the parking air tank (12) and the driven A tractor / trailer coupled vehicle characterized in that compressed air having a minimum pressure required when the side service brake (13) is used as a driven side parking brake is supplied to the driven side service brake (13). Brake device.
JP2000063202A 2000-03-08 2000-03-08 Brake device for tractor / trailer connected vehicle Expired - Lifetime JP3815939B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000063202A JP3815939B2 (en) 2000-03-08 2000-03-08 Brake device for tractor / trailer connected vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000063202A JP3815939B2 (en) 2000-03-08 2000-03-08 Brake device for tractor / trailer connected vehicle

Publications (2)

Publication Number Publication Date
JP2001247030A true JP2001247030A (en) 2001-09-11
JP3815939B2 JP3815939B2 (en) 2006-08-30

Family

ID=18583105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000063202A Expired - Lifetime JP3815939B2 (en) 2000-03-08 2000-03-08 Brake device for tractor / trailer connected vehicle

Country Status (1)

Country Link
JP (1) JP3815939B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105329229A (en) * 2015-11-25 2016-02-17 北汽福田汽车股份有限公司 Car and braking system of car
CN110304032A (en) * 2019-05-31 2019-10-08 东风商用车有限公司 A kind of main trailer parking control system and its control method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103072561B (en) * 2013-02-07 2015-04-29 郭玉 Parking braking releasing device for automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105329229A (en) * 2015-11-25 2016-02-17 北汽福田汽车股份有限公司 Car and braking system of car
CN110304032A (en) * 2019-05-31 2019-10-08 东风商用车有限公司 A kind of main trailer parking control system and its control method

Also Published As

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