CN107884124A - A kind of portable fire storage device stability automatic test equipment - Google Patents

A kind of portable fire storage device stability automatic test equipment Download PDF

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Publication number
CN107884124A
CN107884124A CN201711213799.2A CN201711213799A CN107884124A CN 107884124 A CN107884124 A CN 107884124A CN 201711213799 A CN201711213799 A CN 201711213799A CN 107884124 A CN107884124 A CN 107884124A
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CN
China
Prior art keywords
storage device
water
tiltable platform
portable fire
test equipment
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Granted
Application number
CN201711213799.2A
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Chinese (zh)
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CN107884124B (en
Inventor
朱瑞艳
陈中峰
陈现景
宋甲芳
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Shandong Institute for Product Quality Inspection
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Shandong Institute for Product Quality Inspection
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Priority to CN201711213799.2A priority Critical patent/CN107884124B/en
Publication of CN107884124A publication Critical patent/CN107884124A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00Testing static or dynamic balance of machines or structures
    • G01M1/12Static balancing; Determining position of centre of gravity
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention discloses a kind of portable fire storage device stability automatic test equipment, it is related to fire product detection technique field.The present invention includes tiltable platform, and the lower end of tiltable platform is provided with support meanss and wing drop device, and support meanss, wing drop device fix on the ground, and the front and back of tiltable platform are provided with vertical rod, and vertical rod is provided with monitoring camera;Also include water pump, the pump mouth of water pump connects water-storing device by pipeline, and the delivery port of water pump is connected with aqueduct;Also include controller, water pump, wing drop device, monitoring camera are electrically connected with the controller.Present invention manual operation during testing portable fire storage device stability is few, detection automaticity is high, detection quality and detection efficiency are to be fully ensured.

Description

A kind of portable fire storage device stability automatic test equipment
Technical field
The present invention relates to fire product detection technique field, more particularly, to a kind of portable fire storage device stability Automatic test equipment.
Background technology
Portable fire storage device be used for fire brigade fight a fire, rescue when storage using water as storage medium Water installations, such water storage device, which should sample, carries out stability test, and should reach water storage device full of should on 20 ° of inclined-planes after water Without slide, topple over, turn on one's side phenomena such as stability requirement.The stability test to water storage device is using artificial in the prior art Manually operated, labor intensity is big, potential safety hazard and artificial disturbance factor are more, detection quality and detection efficiency be not high, however, existing Portable fire storage device stability automatic test equipment is not exclusively used in technology, therefore, it is possible to design a kind of people The portable fire storage device stability automatic test equipment that member operates less, detection automaticity is high is very necessary.
The content of the invention
In order to make up the deficiencies in the prior art, the invention provides a kind of portable fire storage device stability to try automatically Experiment device.
The technical solution adopted by the present invention is:
A kind of portable fire storage device stability automatic test equipment, including tiltable platform, the tiltable platform Lower end is provided with support meanss and wing drop device, and the support meanss, wing drop device fix on the ground, described to incline The front and back of sloping platform are also equipped with vertical rod, and the vertical rod is provided with monitoring camera;Also include water pump, the water pump draws water Mouth connects water-storing device by pipeline, and the delivery port of the water pump is connected with aqueduct;Also include controller, the water pump, from Dynamic tilting gearing, monitoring camera are electrically connected with the controller.
Preferably, the support meanss have several, and are arranged at the left side of tiltable platform, the support meanss bag The platform axle bed for including the support axle bed fixed on the ground and being fixed on tiltable platform lower surface, the support axle bed with Platform axle bed is fixedly connected by connecting shaft.
Preferably, the wing drop device is arranged at the right side of tiltable platform, and the wing drop device includes The axle bed I fixed on the ground, the axle bed I are articulated and connected electrohydraulic cylinder by connecting shaft, the work of the electrohydraulic cylinder The collar is welded with stopper rod;The lower end of the tiltable platform is provided with axle bed II, and the collar and axle bed II are inserted with connecting shaft.
Preferably, in addition to touch talent for swimming inductive switch and magnetic valve II, the tactile talent for swimming inductive switch, magnetic valve II it is detachable On the steam vent of water storage device to be measured, the tactile talent for swimming inductive switch electrically connects with the input of controller, the electromagnetism Valve II electrically connects with the output end of controller.
Preferably, in addition to air pump, the air pump are connected with airway tube, and the airway tube is provided with magnetic valve III.
Preferably, the edge of the side of the tiltable platform is also welded with guardrail.
Preferably, the both sides of the guardrail are respectively welded with lacing wire, and the other end of lacing wire is welded on the edge of tiltable platform.
Preferably, the edge of the tiltable platform is additionally provided with water fender, and the water fender is provided with delivery port, it is described go out The mouth of a river is located at the top of the left side edge of tiltable platform.
Preferably, the water-storing device includes tank and the cistern being connected with tank, the cistern pass through pipe Road is connected with the pump mouth of water pump.
Compared with prior art, its advantage is the present invention:
1st, water storage device to be measured can be placed in the present invention on tiltable platform, then by water pump into water storage device to be measured Fetch water, when water reaches requirement, staff can make water pump be stopped, and operational control device control wing drop dress Work is put, tiltable platform inclination is inclined to horizontal sextant angle in 20 ° of fixed angles to water storage device to be measured inclined Stability on sloping platform is tested;
2nd, tactile talent for swimming inductive switch, magnetic valve II are installed on the steam vent of water storage device to be measured in the present invention, when water level connects When contacting tactile talent for swimming inductive switch, touching talent for swimming inductive switch and close automatically, controller is triggered, and controller control water pump is stopped, Control magnetic valve I and magnetic valve II to be turned off simultaneously, can both effectively improve the automaticity fetched water to water storage device to be measured, again Steam vent can be closed in time after water has been beaten into water storage device, prevented in test process, the water in water storage device is through row Stomata flows out;
3rd, air pump is provided with the present invention, air pump is connected with airway tube, and airway tube is provided with magnetic valve III, when portable fire-fighting to be measured When water storage device is folding water storage device, above-mentioned setting can be easy to be inflated to be opened up folding water storage device Open;
4th, the edge of the side of tiltable platform is also welded with guardrail in the present invention, and above-mentioned setting effectively can prevent water storage device from existing Situations such as toppling in test process, turning on one's side and dropped from platform and dangerous accident occur.
5th, the both sides of guardrail are respectively welded with lacing wire in the present invention, and the other end of lacing wire is welded on the edge of tiltable platform, on State the strength and stability for setting and can effectively improving guard bar structure.
6th, the edge of tiltable platform is additionally provided with water fender in the present invention, and water fender is provided with delivery port, in staff When carrying out Detection of Stability to water storage device to be measured, staff can when water storage device to be measured is placed on tiltable platform Make discharging valve on water storage device to be measured towards the water fender with delivery port, due to a left side for tiltable platform after to be detected Side is less than right side, and staff need to only open the discharging valve of water storage device, and water can flow to ground through the delivery port on water fender, Then flowed into through tank in cistern.
Brief description of the drawings
Fig. 1 is main view schematic diagram of the present invention;
Fig. 2 overlooks figure structure schematic representation for the present invention;
Fig. 3 is left view figure structure schematic representation of the present invention;
Fig. 4 is the main view schematic diagram under detection state of the present invention;
Fig. 5 is the sectional view at A in Fig. 1.
In figure:1st, tiltable platform, 2, support meanss, 3, wing drop device, 4, vertical rod, 5, monitoring camera, 6, water Pump, 7, pipeline, 8, water-storing device, 9, threeway, 10, aqueduct, 11, magnetic valve I, 12, water storage device, 13, controller, 14, branch Frame axle bed, 15, platform axle bed, 16, connecting shaft, 17, axle bed I, 18, electrohydraulic cylinder, 19, the collar, 20, axle bed II, 21, touch water Inductive switch, 22, magnetic valve II, 23, steam vent, 24, air pump, 25, airway tube, 26, magnetic valve III, 27, guardrail, 28, lacing wire, 29th, water fender, 30, delivery port, 31, tank, 32, cistern.
Embodiment
As shown in Fig. 1,2,3,4,5, a kind of portable fire storage device stability automatic test equipment, including tiltable Platform 1, the lower end of tiltable platform 1 are provided with support meanss 2 and wing drop device 3, and support meanss 2, wing drop device 3 are solid Determine on the ground, the front and back of tiltable platform 1 are also equipped with vertical rod 4, and vertical rod 4 is provided with monitoring camera 5;Also include water pump 6, the pump mouth of water pump 6 connects water-storing device 8 by pipeline 7, and the delivery port of water pump 6 is connected with threeway 9, and other the two of threeway 9 Individual joint is respectively connected with aqueduct 10, and magnetic valve I 11 is equipped with aqueduct 10, and the free end of aqueduct 10 connects two respectively The sample of water storage device 12 to be measured, two water storage devices 12 are placed along the length direction and width of tiltable platform 1 respectively; Also include controller 13, water pump 6, magnetic valve I 11, wing drop device 3, monitoring camera 5 electrically connect with controller 13.
Support meanss 2 have 3-4, and are arranged at the left side of tiltable platform 1, and support meanss 2 include being fixed on ground On support axle bed 14 and the platform axle bed 15 that is fixed on the lower surface of tiltable platform 1, support axle bed 14 and platform axle bed 15 are fixedly connected by connecting shaft 16.
Wing drop device 3 is arranged at the right side of tiltable platform 1, and wing drop device 3 includes fixing on the ground Axle bed I 17, axle bed I 17 is articulated and connected electrohydraulic cylinder 18 by connecting shaft 16, is welded with the piston rod of electrohydraulic cylinder 18 The collar 19;The lower end of tiltable platform 1 is provided with axle bed II 20, and the collar 19 and axle bed II 20 are inserted with connecting shaft 16.
Also include touching talent for swimming inductive switch 21 and magnetic valve II 22, touch the detachable peace of talent for swimming inductive switch 21, magnetic valve II 22 On the steam vent 23 of water storage device 12 to be measured, the lower section that talent for swimming inductive switch 21 is located at magnetic valve II 22 is touched, tactile water induction is opened Close 21 to electrically connect with the input of controller 13, magnetic valve II 22 electrically connects with the output end of controller 13.
Also include air pump 24, air pump 24 is connected with airway tube 25, and airway tube 25 is provided with magnetic valve III 26.
The edge of the side of tiltable platform 1 is also welded with guardrail 27;The both sides of guardrail 27 are respectively welded with lacing wire 28, lacing wire 28 The other end be welded on the edge of tiltable platform 1.
The edge of tiltable platform 1 is additionally provided with water fender 29, and water fender 29 is provided with delivery port 30, and delivery port 30 is located at can The top of the left side edge of sloping platform 1.
Water-storing device 8 includes tank 31 and the cistern 32 being connected with tank 31, cistern 32 pass through pipeline 7 and water The pump mouth of pump 6 is connected.
When staff is tested the stability of portable fire storage device using the present invention, staff needs Water storage device 12 to be measured is placed on tiltable platform 1, and makes discharging valve on water storage device 12 to be measured towards with going out The water fender 29 at the mouth of a river 30.
When water storage device 12 is the structure such as bellows and non-bellows and aeration ring, such water storage device foldable volume when anhydrous Small to be easy to carry, when to such folding portable fire storage device 12, staff needs first right using air pump 24 Water storage device 12 is inflated expansion, then the test button on restarting controller 13;If water storage device 12 is non-folding Portable fire storage device when, staff can directly initiate the test button on controller 13.
After starting the test button on controller 13, controller 13 controls water pump 6 to work, and controls magnetic valve I 11 to open, Water pump 6 is pumped the water in cistern 32 into two water storage devices 12 by pipeline 7, aqueduct 10 respectively, works as water storage device Liquid level in 12 rises to when being contacted with touching talent for swimming inductive switch 21, touches talent for swimming inductive switch 21 and closes automatically, and controller 13 is triggered, Controller 13 controls water pump 6 to be stopped, and controls tactile talent for swimming inductive switch 21, magnetic valve I 11, magnetic valve II 22 to be turned off, electricity Magnet valve II 22 blocks steam vent 23, while controller 13 also controls electrohydraulic cylinder 18 to work, the piston of electrohydraulic cylinder 18 It is that fixing axle rotates up to tiltable platform 1 and level that bar, which pushes up tiltable platform 1 with the connecting shaft 16 in support meanss 2, Angle is in 20 ° of fixed angles, and now, controller 13 controls electrohydraulic cylinder 18 to be stopped, and controller 13 is according to monitoring camera Whether the image of first 5 transmission is analyzed and made automatically has on the tiltable platform 1 that water storage device 12 is 20 ° at angle of inclination The conclusion that phenomena such as sliding, topple over, turning on one's side occurs.After off-test, the recovery that staff can start on controller 13 is pressed Button, controller 13 control the reverse operation of electrohydraulic cylinder 18, and it is extensive that the piston rod of electrohydraulic cylinder 18 pulls downward on tiltable platform 1 Again to horizontal level, then, the discharging valve that staff can be opened on water storage device 12 is discharged water, in water storage device 12 Water is flowed into tank 31 through the delivery port 30 on water fender 29, and then, the water in tank 31 can be then flowed into cistern 32, is realized The recycling of water.The device can be tested the stability of water storage device 12, the device reduces human users, reduced Labor intensity and artificial disturbance factor, eliminate hidden danger, improve detection automation, detection quality and efficiency.

Claims (9)

  1. A kind of 1. portable fire storage device stability automatic test equipment, it is characterised in that:It is described including tiltable platform The lower end of tiltable platform is provided with support meanss and wing drop device, and the support meanss, wing drop device are fixed on ground On face, the front and back of the tiltable platform are also equipped with vertical rod, and the vertical rod is provided with monitoring camera;Also include water pump, The pump mouth of the water pump connects water-storing device by pipeline, and the delivery port of the water pump is connected with aqueduct;Also include control Device, the water pump, wing drop device, monitoring camera are electrically connected with the controller.
  2. 2. portable fire storage device stability automatic test equipment according to claim 1, it is characterised in that:It is described Support meanss have several, and are arranged at the left side of tiltable platform, and the support meanss include the branch fixed on the ground Frame axle bed and the platform axle bed being fixed on tiltable platform lower surface, the support axle bed pass through connecting shaft with platform axle bed It is fixedly connected.
  3. 3. portable fire storage device stability automatic test equipment according to claim 1, it is characterised in that:It is described Wing drop device is arranged at the right side of tiltable platform, and the wing drop device includes the axle bed I fixed on the ground, The axle bed I is articulated and connected electrohydraulic cylinder by connecting shaft, and the collar is welded with the piston rod of the electrohydraulic cylinder;It is described can The lower end of sloping platform is provided with axle bed II, and the collar and axle bed II are inserted with connecting shaft.
  4. 4. portable fire storage device stability automatic test equipment according to claim 1, it is characterised in that:Also wrap Tactile talent for swimming inductive switch and magnetic valve II are included, the tactile talent for swimming inductive switch, magnetic valve II are removably mounted at water storage device to be measured Steam vent on, the tactile talent for swimming inductive switch electrically connects with the input of controller, the output of the magnetic valve II and controller End electrical connection.
  5. 5. portable fire storage device stability automatic test equipment according to claim 1, it is characterised in that:Also wrap Air pump is included, the air pump is connected with airway tube, and the airway tube is provided with magnetic valve III.
  6. 6. portable fire storage device stability automatic test equipment according to claim 1, it is characterised in that:It is described The edge of the side of tiltable platform is also welded with guardrail.
  7. 7. portable fire storage device stability automatic test equipment according to claim 6, it is characterised in that:It is described The both sides of guardrail are respectively welded with lacing wire, and the other end of lacing wire is welded on the edge of tiltable platform.
  8. 8. portable fire storage device stability automatic test equipment according to claim 1, it is characterised in that:It is described The edge of tiltable platform is additionally provided with water fender, and the water fender is provided with delivery port, and the delivery port is located at tiltable platform Left side edge top.
  9. 9. portable fire storage device stability automatic test equipment according to claim 1, it is characterised in that:It is described Water-storing device includes tank and the cistern being connected with tank, the cistern are connected by pipeline with the pump mouth of water pump Connect.
CN201711213799.2A 2017-11-28 2017-11-28 Automatic stability test device for mobile fire-fighting water storage device Active CN107884124B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711213799.2A CN107884124B (en) 2017-11-28 2017-11-28 Automatic stability test device for mobile fire-fighting water storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711213799.2A CN107884124B (en) 2017-11-28 2017-11-28 Automatic stability test device for mobile fire-fighting water storage device

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CN107884124B CN107884124B (en) 2024-02-06

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201701942U (en) * 2010-07-01 2011-01-12 昆山一恒仪器有限公司 Medicine stability test box
US20110038526A1 (en) * 2008-04-28 2011-02-17 Michael Czarnotta Method and Device for Testing Cigarette Packages Wound with Film
CN102175455A (en) * 2011-02-24 2011-09-07 潍柴动力股份有限公司 Engine inclination testing equipment and platform
KR20120066826A (en) * 2010-12-15 2012-06-25 한국건설기술연구원 Test channel device for revetment stability assessment
US20130205880A1 (en) * 2012-08-30 2013-08-15 Shell Oil Company Tilting system and method for testing engine lubricants
CN103278346A (en) * 2013-06-05 2013-09-04 北京空间飞行器总体设计部 Method for lander stability test
CN204142469U (en) * 2014-11-05 2015-02-04 公安部第一研究所 Warning lamp flash energy test macro
CN104569349A (en) * 2015-01-20 2015-04-29 东北大学 Analysis testing device for simulating influences of rainfall and moisture content on side slope stability
CN204690842U (en) * 2015-03-31 2015-10-07 王选明 Fire water box
CN106248410A (en) * 2016-07-14 2016-12-21 中国矿业大学 A kind of simulation goaf water storage dam stability test device and method
CN106950109A (en) * 2017-04-01 2017-07-14 山东省产品质量检验研究院 A kind of fire-fighting carries torque automatic test equipment with plough groove type pipe joint
CN208239017U (en) * 2017-11-28 2018-12-14 山东省产品质量检验研究院 A kind of movable type fire storage device stability automatic test equipment

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110038526A1 (en) * 2008-04-28 2011-02-17 Michael Czarnotta Method and Device for Testing Cigarette Packages Wound with Film
CN201701942U (en) * 2010-07-01 2011-01-12 昆山一恒仪器有限公司 Medicine stability test box
KR20120066826A (en) * 2010-12-15 2012-06-25 한국건설기술연구원 Test channel device for revetment stability assessment
CN102175455A (en) * 2011-02-24 2011-09-07 潍柴动力股份有限公司 Engine inclination testing equipment and platform
US20130205880A1 (en) * 2012-08-30 2013-08-15 Shell Oil Company Tilting system and method for testing engine lubricants
CN103278346A (en) * 2013-06-05 2013-09-04 北京空间飞行器总体设计部 Method for lander stability test
CN204142469U (en) * 2014-11-05 2015-02-04 公安部第一研究所 Warning lamp flash energy test macro
CN104569349A (en) * 2015-01-20 2015-04-29 东北大学 Analysis testing device for simulating influences of rainfall and moisture content on side slope stability
CN204690842U (en) * 2015-03-31 2015-10-07 王选明 Fire water box
CN106248410A (en) * 2016-07-14 2016-12-21 中国矿业大学 A kind of simulation goaf water storage dam stability test device and method
CN106950109A (en) * 2017-04-01 2017-07-14 山东省产品质量检验研究院 A kind of fire-fighting carries torque automatic test equipment with plough groove type pipe joint
CN208239017U (en) * 2017-11-28 2018-12-14 山东省产品质量检验研究院 A kind of movable type fire storage device stability automatic test equipment

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
MACIEJ J. LEWANDOWSKI-SZEWCZYK: "Stability analysis of steel tank for water storage in active fire protection system", 《REARCHGATE》 *
吕胜良: "消防员室内定位系统的测试及选型", 《消防科学与技术》 *
邹红, 《山东工业技术》 *

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