EP2617469A2 - Einfaches Feuerwehrfahrzeug mit leichter Bewegung - Google Patents

Einfaches Feuerwehrfahrzeug mit leichter Bewegung Download PDF

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Publication number
EP2617469A2
EP2617469A2 EP12003574.6A EP12003574A EP2617469A2 EP 2617469 A2 EP2617469 A2 EP 2617469A2 EP 12003574 A EP12003574 A EP 12003574A EP 2617469 A2 EP2617469 A2 EP 2617469A2
Authority
EP
European Patent Office
Prior art keywords
pump
lubricating water
chamber
unit
protrusion
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.)
Withdrawn
Application number
EP12003574.6A
Other languages
English (en)
French (fr)
Other versions
EP2617469A3 (de
Inventor
Sung-Wang Kno
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.)
JM motors Co Ltd
Original Assignee
JM motors Co 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 JM motors Co Ltd filed Critical JM motors Co Ltd
Publication of EP2617469A2 publication Critical patent/EP2617469A2/de
Publication of EP2617469A3 publication Critical patent/EP2617469A3/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C27/00—Fire-fighting land vehicles
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/06—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0096—Heating; Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049—Equalization of pressure pulses

Definitions

  • the present invention relates to a simple fire truck with easy movement, and more particularly, to a simple fire truck that easily moves to a narrow fire occurred spot difficult for a car to enter by using a transfer wheel driven by a motor separately from a pump driven by an engine, prevents a damage of a sealing unit by depressurizing a pressure transferred to the sealing unit by forming a groove between a chamber and a suction unit formed inside a pump, and improves durability of a positive-displacement pump through lubrication and cooling by using a lubricating water suction unit provided at a pump suction unit during an initial activation.
  • an extinguish system is activated by mobilizing many manpower to prevent and extinguish a fire.
  • the forest fire is not effectively extinguished since very elementary and primitive tools and methods, such as a method of covering the fire with dirt by using a shovel or a pitchfork, are used as firefighting equipments, and only a spray type manual fire extinguisher is used to put out a smoldering fire.
  • Korean Patent Registration No. 1015060 a sealing unit is damaged as a pressure is increased between a chamber and a suction unit, efficiency of a pump is decreased and thus a negligence accident is occurred as a flow rate changes as time passes, and a lifespan of the pump is decreased as durability of a valve and subsidiary apparatus is deteriorated due to a donut phenomenon according to flow resistance.
  • the present invention provides a simple fire truck with easy movement, which easily moves to a narrow fire occurred spot difficult for a car to enter by using a transfer wheel driven by a motor separately from a pump driven by an engine, prevents a damage of a sealing unit by depressurizing a pressure transferred to the sealing unit by forming a groove between a chamber and a suction unit formed inside a pump, and improves durability of a positive-displacement pump through lubrication and cooling by using a lubricating water suction unit provided at a pump suction unit during an initial activation.
  • a simple fire truck that easily moves to a narrow fire occurred spot difficult for a car to enter by using a transfer wheel driven by a motor separately from a pump driven by an engine
  • the simple fire truck including: a depressurization groove that is formed between a chamber where a sealing unit receiving pressure of the pump is provided, and a suction hole, so as to depressurize a pressure of the chamber; a lubricating water supply unit for improving durability through lubrication and cooling by supplying lubricating water to an inlet of the chamber according to a vacuum pressure generated during an initial activation of the pump; and a rotor unit having a first protrusion at an end of a side of a rotor provided inside the chamber, and a second protrusion at a periphery of a shaft hole through which a rotation shaft penetrates.
  • the lubricating water supply unit may include: a lubricating water tank provided to be located above a chamber; a nozzle unit enabling the lubricating water to free-fall according to gravity by being provided at a bottom of the lubricating water tank; a supply valve provided at a top of the housing so as to supply or block the lubricating water to the suction hole; and a filter provided between the lubricating water tank and the nozzle unit.
  • FIG. 1 is a perspective view showing an overall appearance of a simple fire truck with easy movement, according to an embodiment of the present invention
  • FIG. 2 is a view showing a structure for depressurizing a pressure inside a chamber shown in FIG. 1
  • FIG. 3 is a magnified view of a portion A of FIG. 2
  • FIG. 4 is a graph showing pressures applied to sealing units of a general rotary displacement type pump and of a rotary displacement type pump of the present invention including a groove
  • FIG. 5 is a cross-sectional view for explaining an installation structure of a lubricating water supply unit according to an embodiment of the present invention
  • FIG. 6 is a perspective view of a structure of a rotor, according to an embodiment of the present invention.
  • FIG. 1 is the perspective view of the overall appearance of the simple fire truck with each movement, wherein a brake unit 700 that controls rotation of a transfer wheel 500 driven by receiving power from a motor 400 operated by receiving power of a battery is provided at a plate member 300 on which a pump 200 operated by being connected to an engine 100 that integrally includes a fuel tank and operates the pump 200 by generating power is provided, and a frame member 600 including a handle for steering a direction of the transfer wheel 500 is provided.
  • a depressurization groove 200-6 is formed between suction hole 200-1 a and a chamber 200-1 to which a sealing unit 200-5 receiving pressure of the pump 200 is provided, and the depressurization groove 200-6 depressurizes pressure of the chamber 200-1.
  • a lubricating water supply unit 230 for improving durability through lubrication and cooling by supplying lubricating water according to a vacuum pressure generated during an initial activation of the pump 200 is provided at the suction hole 200-1 a of the chamber 200-1.
  • a rotor 220 provided inside the chamber 200-1 has a structure where a first protrusion 220-1 is formed at a side end, and a second protrusion 220-2 is formed at a periphery of a shaft hole through which a rotation shaft penetrates.
  • the lubricating water supply unit 230 includes a lubricating water tank 230-1 provided at a top of the chamber 200-1, a nozzle unit 230-2 enabling the lubricating water to free-fall according to gravity by being provided at a bottom of the lubricating water tank 230-1, a supply valve 230-3 provided at the top of the chamber 200-1 to supply or block the lubricating water to the suction hole 200-1a, and a filter 230-4 provided between the lubricating water tank 230-1 and the nozzle unit 230-2.
  • the lubricating water tank 230-1 is a storage container for storing predetermined lubricating water, and stores an amount of lubricating water required at least to initially activate the pump 200. Also, since the amount of lubricating water during the initial activation differs according to capacity of the pump 200, the lubricating water tank 230-1 having a suitable size for the capacity of the pump 200 may be provided.
  • the nozzle unit 230-2 is provided at the bottom of the lubricating water tank 230-1 so that the lubricating water is discharged outside the lubricating water tank 230-1 by gravity and vacuum pressure in the suction hole 200-1 a. Since an amount of lubricating water during an initial activation of the nozzle unit 230-2 also differs according to the capacity of the pump 200 like the lubricating water tank 230-1, the nozzle unit 230-2 having a suitable discharge amount for the capacity of the pump 200 may be provided.
  • the simple fire truck with easy movement having such a structure according to the present invention is to move to an ignition point or to a point to spray and supply water by using the pump 200
  • the motor 400 provided at the plate member 300 integrally formed with the frame member 600 is operated to rotate the transfer wheel 500 connected to the motor 400
  • the simple fire truck is moved by driving the simple fire truck by using the handle for steering the direction of the transfer wheel 500, and the brake unit 700.
  • the engine 100 and the pump 200 are operated so as to point the flexible hose toward a direction to spray and supply water, and then water is sprayed and supplied.
  • the fluid of high pressure gathered at the discharge hole is moved into the chamber 200-1 due to a change of volume inside the chamber 200-1 generated by the rotation of the rotor 220, and then vacuum pressure is applied to the fluid of high pressure below an abrasion plate 200-4.
  • sealing unit 200-5 high pressure generated by the rotation of the rotor 220 pressurizes the sealing unit 200-5 by leaking between the abrasion plate 200-4 and the rotation shaft, and the abrasion plate 200-4 formed of a metal is not deformed whereas the sealing unit 200-5 formed of a rubber material is compressed and deformed.
  • the sealing unit 200-5 is compressed and deformed, removal of the sealing unit 200-5 inside the chamber 200-1 is prevented by the abrasion plate 200-4.
  • pressure of about 2.0 ⁇ 0.2 MPa is measured at a point where the sealing unit 200-5 is provided in a conventional rotary displacement type pump where the depressurization groove 200-6 is not formed between the chamber 200-1 and the suction hole 200-1a, but pressure of about 1.2 ⁇ 0.12 MPa is measured in the pump 200 of the present invention.
  • the sealing unit 200-5 usable at maximum pressure of 1.5 MPa i.e., an inexpensive sealing unit, may be used while considering a safety factor.
  • seal force (hermetic force) is decreased when the first protrusion 220-1 is worn away by friction between the abrasion plate 200-4 and the first protrusion 220-1 as the rotor 220 rotates for a long time, and thus it is difficult to maintain airtightness for a long time as high pressure is formed at a shaft sealing member.
  • the first protrusion 220-1 and the abrasion plate 200-4 may be damaged as a foreign substance inevitably flowed in during suction of the pump 200 is inserted between the first protrusion 220-1 and the abrasion plate 200-4 while the first protrusion 220-1 rotates.
  • the second protrusion 220-2 is formed near a shaft (a center of a circle) in a circumferential direction besides the first protrusion 220-1, and thus even if the first protrusion 220-1 having a quick circumferential speed is worn away or short-circuited by the foreign substance, the second protrusion 220-2 functions as a sealing member, thereby excellently maintaining seal force.
  • the first protrusion 220-1 is directly exposed to the foreign substance flowed into the pump 200 according to the rotation of the rotor 220, and the foreign substance generates a short circuit of the first protrusion 220-1 or abrasion and short circuit of the abrasion plate 200-4 by being inserted between the first protrusion 220-1 and the abrasion plate 200-4 during rotation. Also, the first protrusion 220-1 is relatively quickly worn away than the second protrusion 220-2 since the first protrusion 220-1 has a quick circumferential speed by being disposed at an outermost periphery (edge) in a circumferential direction.
  • the second protrusion 220-2 functions as a sealing member for a long time as an abrasion speed of the second protrusion 220-2 is delayed since the second protrusion 220-2 is closer to a rotation center than the first protrusion 220-1, and thus has a relatively slower circumferential speed (1/2 to 1/3 of the first protrusion 220-1).
  • the lubricating water supply unit 230 is activated before an initial activation of the pump 200.
  • the lubricating water is pre-filled in the lubricating water tank 230-1 before a positive-displacement pump is driven.
  • the supply valve 230-3 is opened to activate the positive-displacement pump. Accordingly, vacuum pressure is formed inside, i.e., in a space portion, of the positive-displacement pump according to the rotation of the rotor 220. The vacuum pressure sucks the lubrication water to the suction hole 220-1 a through the nozzle unit 230-2. Then, the lubricating water is continuously supplied from the suction hole 200-1 a to the rotor 220 as shown in a silver line of FIG. 5 . At this time, the lubricating water is discharged from the lubricating water tank 230-1 to the suction hole 200-1 a by the vacuum pressure and gravity.
  • the lubricating water is supplied to the space portion along a bottom of the suction hole 200-1 a and sucked between the suction hole 200-1 a and the rotor 220 to function as a priming water. Also, the lubricating water not only prevents pressure in the positive-displacement pump from externally leaking but also cools down frictional heat between the rotor 220 and the space portion.
  • the lubricating water supply unit 230 is configured such that a small amount of lubricating water is supplied to a housing by vacuum pressure of an inlet, thereby performing cooling and lubrication between the housing and the rotor 220. Accordingly, durability of the positive-displacement pump is improved.
  • the present invention may be used in firefighting equipment for extinguishing fire.
  • the simple fire truck with easy movement according to the present invention has following effects.
  • the simple fire truck can easily move to a small fire occurred spot difficult for a car to enter, by using a transfer wheel driven by using a motor separate from a pump driven by an engine.
  • a damage of a sealing unit can be prevented by depressurizing pressure transferred to the sealing unit by forming a groove between a suction unit and a chamber formed inside the pump.
  • durability of a positive-displacement pump can be improved through lubrication and cooling by using a lubricating water suction unit provided at a pump suction unit during an initial activation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Handcart (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Rotary Pumps (AREA)
EP12003574.6A 2012-01-19 2012-05-08 Einfaches Feuerwehrfahrzeug mit leichter Bewegung Withdrawn EP2617469A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120006244A KR101318409B1 (ko) 2012-01-19 2012-01-19 이동이 용이한 간이 소방차

Publications (2)

Publication Number Publication Date
EP2617469A2 true EP2617469A2 (de) 2013-07-24
EP2617469A3 EP2617469A3 (de) 2013-08-07

Family

ID=46147229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12003574.6A Withdrawn EP2617469A3 (de) 2012-01-19 2012-05-08 Einfaches Feuerwehrfahrzeug mit leichter Bewegung

Country Status (5)

Country Link
EP (1) EP2617469A3 (de)
JP (1) JP5364815B2 (de)
KR (1) KR101318409B1 (de)
CN (1) CN103212176A (de)
WO (1) WO2013108964A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107485809A (zh) * 2017-06-16 2017-12-19 许培成 一种复合式森林灭火一体车

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105317545A (zh) * 2014-07-13 2016-02-10 徐建宁 双连杆液压发动机
KR20160090488A (ko) 2015-01-22 2016-08-01 태일엔지니어링 주식회사 사륜형 이륜 다목적 소형 소방차
KR102218525B1 (ko) * 2019-01-31 2021-02-24 주식회사 덕양에코 이동형 방수포의 탑재가 가능한 가압펌프차
KR102401979B1 (ko) * 2019-08-30 2022-05-25 주식회사 덕양에코 이동형 소방모듈을 구비한 가압펌프소방차
KR102546605B1 (ko) 2021-05-06 2023-06-22 김상섭 무한궤도 간이 소방차

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107485809A (zh) * 2017-06-16 2017-12-19 许培成 一种复合式森林灭火一体车
CN107485809B (zh) * 2017-06-16 2021-02-02 许培成 一种复合式森林灭火一体车

Also Published As

Publication number Publication date
WO2013108964A1 (ko) 2013-07-25
JP5364815B2 (ja) 2013-12-11
CN103212176A (zh) 2013-07-24
KR20130085234A (ko) 2013-07-29
JP2013146527A (ja) 2013-08-01
EP2617469A3 (de) 2013-08-07
KR101318409B1 (ko) 2013-10-16

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