JP3859292B2 - Hydraulic equipment drive system for fire engine - Google Patents

Hydraulic equipment drive system for fire engine Download PDF

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Publication number
JP3859292B2
JP3859292B2 JP05437997A JP5437997A JP3859292B2 JP 3859292 B2 JP3859292 B2 JP 3859292B2 JP 05437997 A JP05437997 A JP 05437997A JP 5437997 A JP5437997 A JP 5437997A JP 3859292 B2 JP3859292 B2 JP 3859292B2
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Prior art keywords
oil
hydraulic pump
hydraulic
driven
engine
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JPH10248953A (en
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和広 荒井
幸一 武内
清 大熊
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Nihon Kikai Kogyo Co Ltd
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Nihon Kikai Kogyo Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20523—Internal combustion engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F15B2211/20592—Combinations of pumps for supplying high and low pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、消防車の油圧器具を駆動させる消防車の油圧器具駆動システムに関するものである。
【０００２】
【従来の技術】
消防車には各種の油圧器具、例えば火災家屋から人を救助する際に、中に入るのに障害となるものを切断するカッターなどの救助器具が装備してあり、出動時には必要に応じて取り出し使用している。そして、それらの油圧器具の動力源には、車両エンジンの出力軸に結合して駆動する油圧ポンプや、車両に搭載してきたエンジン式油圧ポンプ、電動式油圧ポンプ、あるいは手動式油圧ポンプなどが使用されている。
【０００３】
【発明が解決しようとする課題】
ところで、上記の動力源のうち、車両エンジンで駆動する油圧ポンプを用いる場合は、消火作業中の車両エンジンの出力軸には、この他にも発電機、クレーン、ウインチなども接続されてそれらの動力源も兼ねており、このためエンジン出力が常時変動するので、当該油圧ポンプを常時一定回転に保つことができず、油圧器具の駆動を不安定なものとし不具合を発生させていた。このことは、特に上記の救助器具を使用しているような場合には、救助に遅れを生じるという事態にもなりかねず、車両エンジンを動力源とする場合でも、安定して使用できるようにしたいとの要請が強まっている。
【０００４】
この発明は上記に鑑み提案されたもので、油圧器具を車両エンジンを動力源として駆動させる場合に、安定して使用することができる消防車の油圧器具駆動システムを提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するために、この発明の消防車の油圧器具駆動システムは、消防車に装備してある油圧器具を駆動させる消防車の油圧器具駆動システムにおいて、消防車の車両エンジンから取り出した出力軸で低圧油圧ポンプを駆動し、その低圧油圧ポンプはその低圧駆動性のゆえにエンジン回転変動による影響をキャンセルして低圧で一定圧一定流量のオイルを供給し、その低圧油圧ポンプによる一定圧一定流量オイルで駆動したオイルモータで高圧油圧ポンプを駆動し、その高圧油圧ポンプによるオイルで油圧器具を駆動させるとともに、上記オイルモータに対するオイル出入り口配管に、アンロードバルブをオイルモータと並列に設けた、ことを特徴としている。
【０００６】
【発明の実施の形態】
以下にこの発明の実施の形態を図面に基づいて詳細に説明する。
図１はこの発明の消防車の油圧器具駆動システムの全体構成を示す図である。図において、消防車の油圧器具駆動システム１００は、消防車に装備してある油圧器具７を駆動させるためのものであり、消防車の車両エンジン１１から取り出した出力軸１７で低圧油圧ポンプ１を駆動し、その低圧油圧ポンプ１による一定圧一定流量オイルで駆動したオイルモータ２で高圧油圧ポンプ３を駆動し、その高圧油圧ポンプ３によるオイルで油圧器具７を駆動させるようにした、ことを特徴としている。
【０００７】
上記の出力軸１７は、車両エンジン１１のトランスミッション１９側のサイドＰＴＯ（パワーテイクオフ）１３、クラッチ機構２１ｂ、ギヤケース１５およびクラッチ機構２１ｄを介して取り出してあり、この出力軸１７に低圧油圧ポンプ１が接続してある。
【０００８】
なお、この車両エンジン１１には、発電機１４が、フルパワーＰＴＯ１２およびクラッチ機構２１ａを介して、またウインチやクレーンを駆動させるための油圧ポンプ１６が、サイドＰＴＯ１３、クラッチ機構２１ｂ、ギヤケース１５およびクラッチ機構２１ｃを介して、それぞれ接続してある。
【０００９】
低圧油圧ポンプ１が車両エンジン１１の出力軸１７によって回転駆動すると、低圧油圧ポンプ１は、オイルタンク５のオイル（例えば粘度＃１５程度の作動油）を吸い込んで低圧力で一定圧一定流量のオイルをオイルモータ２に吐出する。オイルモータ２は、供給されたオイルで回転駆動し、クラッチ２２を介して高圧油圧ポンプ３を駆動させるとともに、オイルを吐出してオイルタンク５に戻す。
【００１０】
高圧油圧ポンプ３がオイルモータ２によって回転駆動すると、高圧油圧ポンプ３は、オイルタンク６のオイルを吸い込んで高圧力でオイルを操作パネル４に吐出する。操作パネル４には、使用しようとする油圧器具７、例えば救助器具としてのカッターが接続してあり、油圧器具７は、操作パネル４に供給されたオイルによって駆動し、所定の動作を行う。オイルはその後オイルタンク６に戻る。
【００１１】
上記のオイルモータ２に対するオイル出入り口配管には、アンロードバルブ８がオイルモータ２と並列に設けてあり、油圧器具７を使用しない無負荷時には、手動で若しくは自動的にこのアンロードバルブ８を開放することで、低圧油圧ポンプ１から吐出されたオイルは、オイルタンク５にそのまま回収されるようになっている。これにより、油圧器具７を使用していないときには、オイルはオイルモータ２、高圧油圧ポンプ３を通過せず、したがって、非使用時の油温上昇を防止することができる。
【００１２】
上記構成の消防車の油圧器具駆動システム１００において、車両エンジン１１の出力軸１７に低圧油圧ポンプ１を接続し駆動させるようにしているので、車両エンジン１１が回転変動を起こしても、低圧油圧ポンプ１はその低圧駆動性のゆえに、エンジン回転変動による影響をキャンセルし、低圧で一定圧、一定流量のオイルを供給することができ、オイルモータ２および高圧油圧ポンプ３を安定して駆動させることとなる。したがって、高圧油圧ポンプ３は高圧で油圧器具が必要とする流量のオイルを安定して吐出し、油圧器具７も車両エンジン１１の回転変動を受けずに駆動することとなるので、油圧器具７を安定して使用することができ、油圧器具使用に対する信頼性を向上させることができる。
【００１３】
【発明の効果】
以上説明したように、この発明の消防車の油圧器具駆動システムによれば、車両エンジンの出力軸に低圧油圧ポンプを接続し、その低圧油圧ポンプからオイルを供給するようにしたので、車両エンジンが回転変動を起こしても、低圧油圧ポンプはその低圧駆動性のゆえに、エンジン回転変動による影響をキャンセルでき、その結果、高圧油圧ポンプを安定して駆動させることとなり、油圧器具も車両エンジンの回転変動を受けずに駆動できるので、油圧器具を安定して使用することができ、油圧器具使用に対する信頼性を向上させることができる。この効果は、油圧器具として救助器具を使用する場合、速やかな救助につながるので、特に重要となる。
【００１４】
また、オイルモータに対するオイル出入り口配管に、アンロードバルブをオイルモータと並列に設けたので、油圧器具を使用しない無負荷時には、このアンロードバルブを開放することで、低圧油圧ポンプから吐出されたオイルは、そのまま回収され、したがって油圧器具を使用していないときには、オイルはオイルモータおよび高圧油圧ポンプを通過せず、非使用時の油温上昇を防止することができる。
【図面の簡単な説明】
【図１】この発明の消防車の油圧器具駆動システムの全体構成を示す図である。
【符号の説明】
１ 低圧油圧ポンプ
２ オイルモータ
３ 高圧油圧ポンプ
４ 操作パネル
５，６ オイルタンク
７ 油圧器具
８ アンロードバルブ
１１ 車両エンジン
１２ フルパワーＰＴＯ
１３ サイドＰＴＯ
１４ 発電機
１５ ギヤボックス
１６ ウインチ・クレーン用の油圧ポンプ
１７ 車両エンジンの出力軸
１９ トランスミッション
２１ａ，２１ｂ，２１ｃ，２１ｄ クラッチ機構
２２ クラッチ
１００ 消防車の油圧器具駆動システム[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire engine hydraulic device drive system for driving a fire engine hydraulic device.
[0002]
[Prior art]
Fire engines are equipped with various types of hydraulic equipment, such as a cutter that cuts out obstacles that can get inside when rescue people from a fire house. I use it. The power source of these hydraulic devices is a hydraulic pump that is coupled to the output shaft of the vehicle engine, an engine hydraulic pump, an electric hydraulic pump, or a manual hydraulic pump that has been installed in the vehicle. Has been.
[0003]
[Problems to be solved by the invention]
By the way, when using a hydraulic pump driven by a vehicle engine among the power sources described above, a generator, a crane, a winch, and the like are also connected to the output shaft of the vehicle engine during a fire fighting operation. Since it also serves as a power source, the engine output constantly fluctuates. Therefore, the hydraulic pump cannot always be kept at a constant rotation, and the drive of the hydraulic device becomes unstable, causing a problem. This can lead to a delay in rescue, especially when using the rescue equipment described above, so that it can be used stably even when the vehicle engine is used as a power source. The demand to do so is growing.
[0004]
The present invention has been proposed in view of the above, and an object of the present invention is to provide a hydraulic equipment drive system for a fire engine that can be used stably when the hydraulic equipment is driven using a vehicle engine as a power source.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a fire engine hydraulic device drive system according to the present invention is a fire engine hydraulic device drive system for driving a hydraulic device installed in a fire engine. A low-pressure hydraulic pump is driven by the shaft, and the low-pressure hydraulic pump cancels the influence of engine rotation fluctuations due to its low-pressure drivability, and supplies oil at a constant pressure and constant flow at low pressure. The high pressure hydraulic pump is driven by the oil motor driven by oil, the hydraulic equipment is driven by the oil from the high pressure hydraulic pump , and an unload valve is provided in parallel with the oil motor in the oil inlet / outlet piping for the oil motor. It is characterized by.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing the overall configuration of a hydraulic equipment drive system for a fire engine according to the present invention. In the figure, a fire engine hydraulic device drive system 100 is for driving a hydraulic device 7 mounted on the fire engine. The low pressure hydraulic pump 1 is connected to the output shaft 17 taken out from the vehicle engine 11 of the fire engine. The high pressure hydraulic pump 3 is driven by the oil motor 2 driven by the low pressure hydraulic pump 1 and driven by the constant pressure and constant flow rate oil, and the hydraulic device 7 is driven by the oil from the high pressure hydraulic pump 3. It is said.
[0007]
The output shaft 17 is taken out via a side PTO (power take-off) 13 on the transmission 19 side of the vehicle engine 11, a clutch mechanism 21 b, a gear case 15, and a clutch mechanism 21 d, and the low-pressure hydraulic pump 1 is connected to the output shaft 17. Connected.
[0008]
The vehicle engine 11 includes a generator 14 via a full power PTO 12 and a clutch mechanism 21a, and a hydraulic pump 16 for driving a winch and a crane, a side PTO 13, a clutch mechanism 21b, a gear case 15 and a clutch. Each is connected via the mechanism 21c.
[0009]
When the low-pressure hydraulic pump 1 is rotationally driven by the output shaft 17 of the vehicle engine 11, the low-pressure hydraulic pump 1 sucks the oil in the oil tank 5 (for example, hydraulic oil having a viscosity of about # 15) and is low pressure and constant pressure and constant flow rate oil. Is discharged to the oil motor 2. The oil motor 2 is rotationally driven by the supplied oil, drives the high-pressure hydraulic pump 3 via the clutch 22, discharges the oil, and returns it to the oil tank 5.
[0010]
When the high pressure hydraulic pump 3 is rotationally driven by the oil motor 2, the high pressure hydraulic pump 3 sucks the oil in the oil tank 6 and discharges the oil to the operation panel 4 at a high pressure. The operation panel 4 is connected to a hydraulic instrument 7 to be used, for example, a cutter as a rescue instrument, and the hydraulic instrument 7 is driven by oil supplied to the operation panel 4 and performs a predetermined operation. The oil then returns to the oil tank 6.
[0011]
An unload valve 8 is provided in parallel with the oil motor 2 in the oil inlet / outlet pipe for the oil motor 2 described above, and the unload valve 8 is opened manually or automatically when no load is applied when the hydraulic device 7 is not used. As a result, the oil discharged from the low-pressure hydraulic pump 1 is collected in the oil tank 5 as it is. Thereby, when the hydraulic instrument 7 is not used, the oil does not pass through the oil motor 2 and the high-pressure hydraulic pump 3, and therefore, the oil temperature can be prevented from rising when not in use.
[0012]
In the fire engine hydraulic device drive system 100 configured as described above, the low pressure hydraulic pump 1 is connected to the output shaft 17 of the vehicle engine 11 and driven. Therefore, even if the vehicle engine 11 undergoes rotational fluctuation, the low pressure hydraulic pump 1 is capable of canceling the influence due to fluctuations in engine rotation due to its low-pressure drivability, supplying a constant pressure and a constant flow of oil at a low pressure, and driving the oil motor 2 and the high-pressure hydraulic pump 3 stably. Become. Accordingly, the high-pressure hydraulic pump 3 stably discharges oil at a high pressure and a flow rate required by the hydraulic instrument, and the hydraulic instrument 7 is driven without being subjected to rotational fluctuations of the vehicle engine 11. It can be used stably, and the reliability with respect to hydraulic equipment use can be improved.
[0013]
【The invention's effect】
As described above, according to the hydraulic appliance drive system for a fire engine of the present invention, the low-pressure hydraulic pump is connected to the output shaft of the vehicle engine, and the oil is supplied from the low-pressure hydraulic pump. Even if rotation fluctuation occurs, the low-pressure hydraulic pump can cancel the influence of engine rotation fluctuation because of its low-pressure drive performance, and as a result, the high-pressure hydraulic pump can be driven stably, and the hydraulic equipment also changes the rotation speed of the vehicle engine. Therefore, the hydraulic instrument can be used stably, and the reliability for using the hydraulic instrument can be improved. This effect is particularly important when a rescue device is used as a hydraulic device because it leads to a quick rescue.
[0014]
In addition, since an unload valve is provided in parallel with the oil motor in the oil inlet / outlet piping for the oil motor, the oil discharged from the low pressure hydraulic pump can be opened by opening this unload valve when no load is used without using hydraulic equipment. Is recovered as it is, and therefore, when the hydraulic apparatus is not used, the oil does not pass through the oil motor and the high-pressure hydraulic pump, thereby preventing the oil temperature from rising when not in use.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of a hydraulic appliance drive system for a fire engine according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Low pressure hydraulic pump 2 Oil motor 3 High pressure hydraulic pump 4 Operation panel 5, 6 Oil tank 7 Hydraulic instrument 8 Unload valve 11 Vehicle engine 12 Full power PTO
13 Side PTO
14 Generator 15 Gearbox 16 Hydraulic pump for winch crane 17 Output shaft 19 of vehicle engine Transmission 21a, 21b, 21c, 21d Clutch mechanism 22 Clutch 100 Hydraulic appliance drive system for fire engine

Claims (1)

消防車に装備してある油圧器具を駆動させる消防車の油圧器具駆動システムにおいて、
消防車の車両エンジンから取り出した出力軸で低圧油圧ポンプを駆動し、その低圧油圧ポンプはその低圧駆動性のゆえにエンジン回転変動による影響をキャンセルして低圧で一定圧一定流量のオイルを供給し、その低圧油圧ポンプによる一定圧一定流量オイルで駆動したオイルモータで高圧油圧ポンプを駆動し、その高圧油圧ポンプによるオイルで油圧器具を駆動させるとともに、
上記オイルモータに対するオイル出入り口配管に、アンロードバルブをオイルモータと並列に設けた、
ことを特徴とする消防車の油圧器具駆動システム。In the fire engine hydraulic equipment drive system that drives the hydraulic equipment installed in the fire engine,
The low pressure hydraulic pump is driven by the output shaft taken out from the vehicle engine of the fire engine, and the low pressure hydraulic pump cancels the influence of engine rotation fluctuations due to its low pressure drivability and supplies oil at a constant pressure and constant flow rate at low pressure. The high pressure hydraulic pump is driven by an oil motor driven by constant pressure and constant flow rate oil by the low pressure hydraulic pump , and the hydraulic equipment is driven by oil by the high pressure hydraulic pump ,
In the oil inlet / outlet piping for the oil motor, an unload valve was installed in parallel with the oil motor.
A hydraulic appliance drive system for fire trucks.
JP05437997A 1997-03-10 1997-03-10 Hydraulic equipment drive system for fire engine Expired - Lifetime JP3859292B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05437997A JP3859292B2 (en) 1997-03-10 1997-03-10 Hydraulic equipment drive system for fire engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05437997A JP3859292B2 (en) 1997-03-10 1997-03-10 Hydraulic equipment drive system for fire engine

Publications (2)

Publication Number Publication Date
JPH10248953A JPH10248953A (en) 1998-09-22
JP3859292B2 true JP3859292B2 (en) 2006-12-20

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JP05437997A Expired - Lifetime JP3859292B2 (en) 1997-03-10 1997-03-10 Hydraulic equipment drive system for fire engine

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Publication number Priority date Publication date Assignee Title
JP2018089345A (en) * 2016-11-25 2018-06-14 日本機械工業株式会社 Fire pump vehicle with strong water sucking capacity

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