JPH0147328B2 - - Google Patents
Info
- Publication number
- JPH0147328B2 JPH0147328B2 JP56024195A JP2419581A JPH0147328B2 JP H0147328 B2 JPH0147328 B2 JP H0147328B2 JP 56024195 A JP56024195 A JP 56024195A JP 2419581 A JP2419581 A JP 2419581A JP H0147328 B2 JPH0147328 B2 JP H0147328B2
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- trailer
- tractor
- hydraulic pump
- pump
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of fluid gearing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
- Motor Power Transmission Devices (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Description
【発明の詳細な説明】
この発明は軟弱地や不整地などから容易に脱出
可能なトレーラの油圧駆動装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic drive system for a trailer that can easily escape from soft or uneven ground.
従来トレーラの油圧駆動装置としては例えば特
公昭47−10647号公報などに記載されたものが公
知である。 As a conventional hydraulic drive system for a trailer, the system described in, for example, Japanese Patent Publication No. 10647/1983 is well known.
上記従来の油圧駆動装置は、エンジンにより駆
動される１個の可変容量型液体ポンプを備え、こ
の液圧ポンプにより吐出される液圧により、トラ
クタ及びトレーラにそれぞれ設けられた２個の液
圧モータを駆動するようにしたもので、トラクタ
側の液圧モータ及びトレーラ側の液圧モータによ
り駆動される車輪の一方がスリツプしても他方の
車輪で駆動力を発揮できるようになつている。 The above-mentioned conventional hydraulic drive device includes one variable displacement liquid pump driven by an engine, and the hydraulic pressure discharged by this hydraulic pump drives two hydraulic motors respectively installed on the tractor and trailer. The system is designed so that even if one of the wheels driven by the hydraulic motor on the tractor side and the hydraulic motor on the trailer side slips, the other wheel can exert driving force.
しかし上記従来の油圧駆動装置では大型の可変
容量型液圧ポンプを使用しているため、液圧ポン
プ自体が高価であると共に、この液圧ポンプが故
障した場合走行が困難となるため、緊急移動によ
る危険の回避や、修理工場などへの自力移動がで
きないほどの不具合があつた。 However, since the conventional hydraulic drive system described above uses a large variable displacement hydraulic pump, the hydraulic pump itself is expensive, and if this hydraulic pump breaks down, it will be difficult to drive, so emergency transportation is required. The problem was such that he was unable to avoid the danger caused by the accident or move to a repair shop on his own.
この発明は上記不具合を改善する目的でなされ
たもので、大きな駆動力を必要とするとき駆動さ
れる定容量油圧ポンプと車輪が軟弱地に取られ脱
出が困難となつたり、主ポンプ側が故障して走行
が困難となつた場合に使用する緊急用油圧ポンプ
を備えたトレーラの油圧駆動装置を提供して、軟
弱地からの脱出や、緊急移動による危険回避、修
理工場などへの移動が容易に行えるようにしたも
のである。 This invention was made for the purpose of improving the above-mentioned problems, and when a large driving force is required, the fixed-capacity hydraulic pump and wheels that are driven are stuck on soft ground, making it difficult to escape, or the main pump side breaks down. We provide a hydraulic drive system for trailers equipped with emergency hydraulic pumps that can be used in the event that driving becomes difficult, making it easier to escape from soft ground, avoid danger through emergency movement, and move to repair shops. It has been made possible to do so.
以下この発明の一実施例を図面を参照して詳述
すると、図において１はトラクタ側油圧回路、そ
して２はトレーラ側油圧回路で、両者の間はスイ
ベルジヨイント３により接続されている。上記ト
ラクタ側油圧回路１にはエンジン１２によりトラ
ンスフア装置４を介して駆動される定容量油圧ポ
ンプ５を有しており、この油圧ポンプ５は平時は
トランスフア装置４内に設けられた図示しないク
ラツチによりエンジンとの間が遮断されていて停
止している。上記油圧ポンプ５はトレーラの前進
時は管路６側に、また後進時には管路７側に夫々
油圧が吐出されるようになつており、管路６へ吐
出された油圧はパイロツト切換え弁８の中立ポジ
シヨン８2及び管路６ａを通つてスイベルジヨイ
ント３に達し、トレーラ側油圧回路２の管路９へ
流入すると共に、管路７へ吐出された油圧はパイ
ロツト切換え弁１０の中立ポジシヨン１０2及び
管路７ａを通つてスイベルジヨイント３に達し、
トレーラ側油圧回路２の管路１１へ流入する。ま
たトラクタ側油圧回路１には上記エンジン１２に
より常時回転される緊急用油圧ポンプ１３とチヤ
ージポンプ１４が設けられており、緊急用油圧ポ
ンプ１３の吐出圧は平時は切換え弁１５の中立ポ
ジシヨン１５2を通つてタンク１６にドレンされ
ていると共に、上記切換え弁１５を前進ポジシヨ
ン１５1へ操作すると、パイロツト切換え弁８の
ポジシヨン８1により管路６ａ側へ流入され、切
換え弁１５を後進ポジシヨン１５3へ操作すると
パイロツト切換え弁１０のポジシヨン１０1より
管路７ａへ流入されるようになつており、さらに
チヤージポンプ１４の吐出圧は上記管路６ａ，７
ａへ流入して、リークなどにより不足した油の補
充と、閉回路中の油の劣化を防止する作用をなし
ている。 An embodiment of the present invention will be described below in detail with reference to the drawings. In the drawings, 1 is a tractor-side hydraulic circuit, 2 is a trailer-side hydraulic circuit, and the two are connected by a swivel joint 3. The tractor-side hydraulic circuit 1 has a constant displacement hydraulic pump 5 driven by an engine 12 via a transfer device 4, and this hydraulic pump 5 is normally installed in the transfer device 4 (not shown). The clutch shuts off the connection to the engine, causing it to stop. The hydraulic pump 5 is configured to discharge hydraulic pressure to the pipe line 6 side when the trailer is moving forward, and to the pipe line 7 side when the trailer is moving backwards, and the hydraulic pressure discharged to the pipe line 6 is transferred to the pilot switching valve 8. The hydraulic pressure reaches the swivel joint 3 through the neutral position 8 2 and the pipe 6a, flows into the pipe 9 of the trailer side hydraulic circuit 2, and the hydraulic pressure discharged to the pipe 7 moves to the neutral position 10 2 of the pilot switching valve 10. and reaches the swivel joint 3 through the conduit 7a,
It flows into the pipe line 11 of the trailer side hydraulic circuit 2. Further, the tractor-side hydraulic circuit 1 is provided with an emergency hydraulic pump 13 and a charge pump 14 which are constantly rotated by the engine 12, and the discharge pressure of the emergency hydraulic pump 13 is maintained at the neutral position 15 2 of the switching valve 15 during normal times. When the switching valve 15 is operated to the forward position 151, the pilot switching valve 8 moves to the position 81 and flows into the conduit 6a , and the switching valve 15 is moved to the reverse position 153 . When operated, the flow is made to flow into the pipe line 7a from the position 101 of the pilot switching valve 10, and the discharge pressure of the charge pump 14 is adjusted to the above-mentioned pipe lines 6a, 7.
It flows into the oil tank a to replenish the oil that is insufficient due to leakage, etc., and to prevent the oil from deteriorating in the closed circuit.
一方上記トレーラ側油圧回路２の管路９または
１１に流入された油圧は分流弁１７または１８に
より２路に分流され、一方は前後輪１９を駆動す
る定容量油圧モータ２０に、そして他方は後後輪
２１を駆動する定容量油圧モータ２２に流入され
て、これら油圧モータ２０，２２によりクラツチ
２３，２４を介して前後輪１９及び後後輪２１が
駆動されるようになつている。また上記管路９及
び１１の間にはフラツシユ弁２５が設けられてい
て、戻り油の一部を流量制限用の圧力制御弁２６
を介してドレン回路２７へドレンするようになつ
ている。 On the other hand, the hydraulic pressure flowing into the pipe line 9 or 11 of the trailer-side hydraulic circuit 2 is divided into two paths by the diverter valve 17 or 18, one path is connected to the constant displacement hydraulic motor 20 that drives the front and rear wheels 19, and the other path is connected to the rear wheel 19. The fluid flows into a constant displacement hydraulic motor 22 that drives the rear wheels 21, and these hydraulic motors 20, 22 drive the front and rear wheels 19 and the rear wheels 21 via clutches 23, 24. Further, a flush valve 25 is provided between the pipes 9 and 11, and a part of the return oil is transferred to a pressure control valve 26 for restricting the flow rate.
The water is drained to the drain circuit 27 via the drain circuit 27.
しかして平常走行時にはトランスフア装置４内
のクラツチが遮断されているため、油圧モータ５
は駆動されず、従つてトレーラはトラクタの動力
により牽引されて走行する。次に不整地や坂路の
走行に際してトラクタ側の牽引力が不足する場合
は、トランスフア装置４内のクラツチを接続して
油圧ポンプ５を駆動する。これにより油圧ポンプ
５より吐出された油圧がパイロツト切換え弁８、
管路６ａ、スイベルジヨイント３及び管路９を介
して油圧モータ２０，２２に流入されて各油圧モ
ータ２０，２２がトレーラ側の前後輪１９及び後
後輪２１を同時に駆動するため、トラクタの牽引
力とトレーラの牽引力で不整地などを容易に通過
することができる。 However, during normal driving, the clutch in the transfer device 4 is disconnected, so the hydraulic motor 5
is not driven, and therefore the trailer is driven by the power of the tractor. Next, if the tractive force on the tractor side is insufficient when traveling on uneven ground or on a slope, the clutch in the transfer device 4 is connected to drive the hydraulic pump 5. As a result, the hydraulic pressure discharged from the hydraulic pump 5 is transferred to the pilot switching valve 8,
The water flows into the hydraulic motors 20, 22 through the pipe 6a, the swivel joint 3, and the pipe 9, and each hydraulic motor 20, 22 simultaneously drives the front and rear wheels 19 and rear wheels 21 on the trailer side. It can easily cross rough terrain with its traction power and trailer traction.
一方不整地や軟弱地などを走行した際トラクタ
側の車輪が軟弱地などに取られてトラクタ側の走
行が不能となつた場合、切換え弁１５を中立ポジ
シヨン１５2より前進または後進ポジシヨン１５
１，１５3へ切換える。これによつていままでタン
ク１６へドレンされていた緊急用油圧ポンプ１３
の油圧がパイロツト切換え弁８または１０を介し
て管路６ａ，７ａに流入し、さらにトレーラ側の
管路９または１１より各油圧モータ２０，２１へ
供給されるため、トレーラ側の牽引力によりトラ
クタ側を軟弱地などから脱出させることができ
る。さらに大きな牽引力を必要とする場合は、緊
急用油圧ポンプ１３の吐出圧を油圧ポンプ５の吐
出圧へ合流させてトレーラ側へ合流させる。これ
によつてトレーラ側の牽引力がトラクタ側のそれ
を上まわり、トレーラ側がトラクタ側を押圧して
牽引力が増大するようになる。 On the other hand, when traveling on rough or soft ground, if the wheels on the tractor side are caught in the soft ground and the tractor side becomes unable to travel, switch the switching valve 15 from the neutral position 152 to the forward or reverse position 15.
Switch to 1 , 15 3 . Due to this, the emergency hydraulic pump 13, which had been drained to the tank 16,
The hydraulic pressure flows into the pipes 6a, 7a via the pilot switching valve 8 or 10, and is further supplied to each hydraulic motor 20, 21 from the pipe line 9 or 11 on the trailer side, so that the tractive force on the trailer side causes the hydraulic pressure on the tractor side to can be used to escape from soft ground. If a larger tractive force is required, the discharge pressure of the emergency hydraulic pump 13 is merged with the discharge pressure of the hydraulic pump 5, and the discharge pressure is merged into the trailer side. As a result, the traction force on the trailer side exceeds that on the tractor side, and the trailer side presses the tractor side, increasing the traction force.
なおこの場合トレーラ側が過度にトラクタ側を
押圧しないように流量を設定することは勿論であ
る。また上記実施例ではトレーラ側の車軸が２軸
の場合を説明したが、単軸でも多軸でも同様に実
施することができるものである。 In this case, it goes without saying that the flow rate should be set so that the trailer side does not press the tractor side excessively. Further, in the above embodiment, the case where the axle on the trailer side is two axles has been described, but the present invention can be similarly implemented with a single axle or with multiple axles.
この発明は以上詳述したように、軟弱地や不整
地走行の場合にトレーラ側車輪を駆動してより強
力な牽引力が得られるようにしたことから、軟弱
地などにトラクタまたはトレーラが車輪を取られ
ても容易に脱出できるようになる。また主ポンプ
側が駆動不能になつても緊急用ポンプによりトレ
ーラ側車輪を駆動できるため、トレーラ側でトラ
クタ側を軟弱地などから脱出させることができる
と共に、トラクタ側及びトレーラ側に定容量ポン
プ及びモータを使用したので、従来の可変容量ポ
ンプを用いたものに比べてポンプ及びモータの小
型軽量化が図れると共に、速度を同期させる制御
系なども必要としないので、構成が簡単で安価に
提供することもできる。 As described in detail above, this invention enables a stronger traction force to be obtained by driving the wheels on the trailer side when traveling on soft or uneven ground. You will be able to escape easily even if you are attacked. In addition, even if the main pump becomes unable to drive, the emergency pump can drive the wheels on the trailer side, allowing the trailer side to pull the tractor out of soft ground, etc., as well as providing fixed displacement pumps and motors on the tractor and trailer sides. Because it uses a conventional variable displacement pump, the pump and motor can be made smaller and lighter, and there is no need for a control system to synchronize the speed, so the configuration is simple and inexpensive. You can also do it.
図面はこの発明の一実施例を示す回路図であ
る。
５は定容量油圧ポンプ、８，１０はパイロツト
切換え弁、１３は緊急用油圧ポンプ、１５は切換
え弁、１９，２１は車輪、２０，２２は定容量油
圧モータ。
The drawing is a circuit diagram showing an embodiment of the present invention. 5 is a constant displacement hydraulic pump, 8 and 10 are pilot switching valves, 13 is an emergency hydraulic pump, 15 is a switching valve, 19 and 21 are wheels, and 20 and 22 are constant displacement hydraulic motors.
Claims (1)
クタ側動力により駆動される定容量油圧ポンプ５
と、常時トラクタ側動力により駆動され、緊急時
切換え弁１５及びパイロツト切換え弁８，１０を
介して上記油圧ポンプ５に吐出圧が合流される緊
急用油圧ポンプ１３と、上記トラクタ側の油圧ポ
ンプ５と閉回路により接続されたトレーラ側の定
容量油圧モータ２０，２２とを具備し、上記油圧
モータ２０，２２によりトレーラ側車輪１９，２
１を駆動するようになるトレーラの油圧駆動装
置。1 Constant displacement hydraulic pump 5 which is stopped during normal driving and is driven by tractor side power as necessary.
, an emergency hydraulic pump 13 that is always driven by tractor-side power and whose discharge pressure is combined with the hydraulic pump 5 via the emergency switching valve 15 and the pilot switching valves 8 and 10; and the tractor-side hydraulic pump 5. and fixed capacity hydraulic motors 20 and 22 on the trailer side connected by a closed circuit, and the hydraulic motors 20 and 22 drive the trailer side wheels 19 and 2.
Hydraulic drive system of the trailer that comes to drive 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2419581A JPS57140228A (en) | 1981-02-23 | 1981-02-23 | Hydraulic driving device for trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2419581A JPS57140228A (en) | 1981-02-23 | 1981-02-23 | Hydraulic driving device for trailer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57140228A JPS57140228A (en) | 1982-08-30 |
| JPH0147328B2 true JPH0147328B2 (en) | 1989-10-13 |
Family
ID=12131537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2419581A Granted JPS57140228A (en) | 1981-02-23 | 1981-02-23 | Hydraulic driving device for trailer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57140228A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108583682B (en) * | 2018-05-22 | 2019-08-13 | 中冶宝钢技术服务有限公司 | Emergency vehicle steering system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS538638U (en) * | 1976-07-07 | 1978-01-25 |
-
1981
- 1981-02-23 JP JP2419581A patent/JPS57140228A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57140228A (en) | 1982-08-30 |
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