WO2020098525A1 - Dispositif de test d'ascenseur de type sans charge - Google Patents

Dispositif de test d'ascenseur de type sans charge Download PDF

Info

Publication number
WO2020098525A1
WO2020098525A1 PCT/CN2019/115427 CN2019115427W WO2020098525A1 WO 2020098525 A1 WO2020098525 A1 WO 2020098525A1 CN 2019115427 W CN2019115427 W CN 2019115427W WO 2020098525 A1 WO2020098525 A1 WO 2020098525A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
counterweight
water supply
supply tank
bladder
Prior art date
Application number
PCT/CN2019/115427
Other languages
English (en)
Chinese (zh)
Inventor
张强
米豪鼎
田莹
冯辉
谢飞
Original Assignee
山东科技大学
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 山东科技大学 filed Critical 山东科技大学
Publication of WO2020098525A1 publication Critical patent/WO2020098525A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing

Definitions

  • the invention belongs to the technical field of mechanical engineering, and in particular relates to an elevator test and testing device in a no-load form.
  • the existing measurement method needs to carry the standard weights of the elevator car manually or by machine according to different loading ratios, and it takes a long time for the inspection personnel to wait, which is time-consuming and laborious.
  • a new method of formal test without elevator load is required.
  • the technical problem solved by the present invention is to provide an elevator test and test device in the form of no load, which can realize the completion of the elevator by replacing the load with water without the need to manually carry the counterweight Detection.
  • the present invention provides a no-load elevator test and testing device, including:
  • the counterweight water bladder part is placed in the elevator car to be tested and used to load different weights to the elevator;
  • the water supply part is connected to the counterweight water bladder part, and is used for adding water to the counterweight water bladder part and pumping out the water in the counterweight water bladder part;
  • the switch control part is respectively connected to the counterweight water bladder part and the water supply part, and is used for controlling the water supply part to add or extract water to the counterweight water bladder part according to the water quantity of the counterweight water bladder part.
  • the counterweight water sac portion includes a counterweight water sac for holding water, a liquid level gauge placed on the outer wall of the counterweight water sac and used for observing the liquid level height in the counterweight water sac
  • the rubber vacuum suction cup can be used to stabilize the counterweight water bladder.
  • the air in the rubber vacuum chuck at the bottom of the counterweight water bladder is squeezed out under the action of gravity, making the inside of the rubber vacuum chuck
  • the vacuum area is formed, and under the influence of the external atmospheric pressure, the weight water sac is absorbed in the elevator car.
  • the counterweight water bladder portion further includes a buffer placed at the water inlet of the counterweight water bladder;
  • the shape of the buffer is a spherical container, and the interior of the spherical container has a mesh structure, which is used to reduce the impact of water flow on the internal structure of the counterweight water bladder.
  • the buffer can prevent the water flow velocity from being larger when the water flows into the counterweight water bladder and damage the counterweight water bladder.
  • the water supply part includes a water supply tank, a water outlet valve for opening and closing the water outlet of the water supply tank, a one-way valve for preventing backflow of water in the counterweight water bladder, and Pump the counterweight water bladder and pump the water back to the water supply tank.
  • the water supply tank includes a main water supply tank and a standby water supply tank
  • the water pump includes a main water pump and a standby water pump that are respectively matched with the main water tank and the standby water tank;
  • the water outlet valve includes a first water outlet valve and a second water outlet valve respectively responsible for opening and closing the water outlets of the main water supply tank and the standby water supply tank;
  • the one-way valve includes a first one-way valve and a second one-way valve respectively placed in the outlet lines of the main water supply tank and the standby water supply tank, the first one-way valve and the second one-way valve are respectively It is installed under the first water outlet valve and the second water outlet valve, and is used to prevent the water from flowing backward during the water supply process.
  • a main booster pump and a standby booster pump are also provided in the outlet pipes of the main water supply tank and the standby water supply tank, respectively, for accelerating the water filling speed;
  • a third one-way valve and a fourth one-way valve are also provided in the inlet pipes of the main water supply tank and the standby water supply tank, respectively, and the third one-way valve and the fourth one-way valve are respectively installed in the main pumping In the pumping circuit of the water pump and the standby pump, it is used to prevent water from flowing back into the counterweight water bladder.
  • the main water supply tank and the backup water supply tank respectively have a first float valve and a second float valve;
  • the first float ball valve and the second float ball valve have the same structure, and each includes a float ball on the water surface, a connecting rod located below the float ball, and a connecting rod connected to the connecting rod and used to open and close the water supply tank Piston pad for water outlet.
  • the liquid level of the water supply tank can be controlled through the float valve to prevent the water supply tank from entering excessive water.
  • the switch control part includes:
  • the humidity sensor is installed on the outer wall of the counterweight water bladder, and is used to convert the external environment humidity signal of the counterweight water bladder into an electrical signal;
  • a liquid level sensor connected to the liquid level gauge and measuring the static pressure in the liquid level gauge, for converting the static pressure into an electrical signal
  • Solenoid valve for opening and closing the water inlet of the counterweight water bladder
  • the PLC controller is respectively connected to the liquid level sensor, the humidity sensor and the solenoid valve, and is used for outputting a signal for controlling the on-off of the solenoid valve through the electric signals output by the liquid level sensor and the humidity sensor.
  • the switch control part further includes a buzzer connected to the humidity sensor, which is used to give an alarm prompt when the outer end of the counterweight water sac is damaged or leaked.
  • the unloaded elevator test and test device of the present invention can be directly placed in the elevator car for water injection through the weight water sac during the test, and the weight water sac is stabilized by the rubber vacuum suction cup device, and the elevator is tested After the end, the weight water bladder can be placed under compression.
  • a buffer is installed in the counterweight water sac to buffer the water entering the counterweight water sac.
  • a liquid level gauge is installed outside the counterweight water sac to observe the liquid level in the counterweight water sac. The liquid level gauge is connected to the liquid level sensor and the liquid level sensor
  • the humidity sensor uses a PLC controller as a relay station, and the signal is output to the solenoid valve to control the opening and closing of the solenoid valve.
  • a main water supply tank and a backup water supply tank are installed on the transport vehicle.
  • the water supply tank has a built-in float valve.
  • the float valve controls the water inlet and outlet of the water supply tank.
  • a valve is connected under the water outlet and a one-way valve under the valve to prevent water from flowing back. Equipped with a booster pump for boosting water and quickly filling the counterweight water bladder.
  • a water pump is connected under the water inlet of the water supply tank to take away the water in the counterweight water bladder.
  • a one-way valve is installed under the pump To prevent backflow of water.
  • the test device of the present invention can realize the weighting of the elevator by replacing the load with water, shorten the detection time, reduce the input of manpower and material resources, thereby improving the degree of automation of the detection and effectively improving the work efficiency.
  • FIG. 1 is a schematic view of the overall structure of the elevator test and test device in the form of no load according to the present invention
  • FIG. 2 is a schematic diagram of connection of a humidity sensor, a PLC controller and a buzzer of an elevator test and test device in a no-load form of the present invention
  • FIG. 3 is a schematic structural view of a float valve of an elevator test and test device in a no-load form of the present invention
  • FIG. 4 is a schematic structural view of a rubber vacuum chuck of an elevator test and test device in a no-load form of the present invention.
  • the elevator test and testing device of the present invention in a no-load form includes a counterweight water bladder part, a water supply part, and a switch control part, wherein the counterweight water bladder part is placed in the elevator car to be tested for
  • the elevator is loaded with different weights;
  • the water supply part is connected to the weighted water bladder part for adding water to the weighted water bladder part and pumping out the water in the weighted water bladder part;
  • the switch control part is separately The heavy water bladder part and the water supply part are connected for controlling the water supply part to add or draw water to the weight water bladder part according to the water amount of the weight water bladder part.
  • the weight water sac portion includes the weight water sac 1, which has good plasticity, and is easy to sort and recycle before and after the test.
  • the lower part of the weight water sac 1 is equipped with a rubber vacuum suction cup 26, which is used to stabilize the weight water sac 1, when When the weight water bladder 1 is filled with water, under the action of gravity, the air in the rubber vacuum suction cup 26 at the bottom of the weight water bladder 1 is squeezed out, so that a vacuum area is formed inside the rubber vacuum suction cup 26, under the influence of the external atmospheric pressure,
  • the counterweight water bladder 1 is absorbed in the elevator car.
  • the counterweight water bladder 1 is provided with a buffer 17 therein.
  • the buffer 17 has a mesh structure inside, which can effectively reduce the impact of water flow on the internal structure of the counterweight water bladder 1.
  • the buffer 17 is placed at the water inlet of the counterweight water bladder 1.
  • the A buffer 17 is installed at the water inlet of the heavy water bladder.
  • the shape of the buffer can be a spherical container.
  • the spherical container is equipped with a mesh structure.
  • the water Before entering the counterweight water bladder 1, the water first enters the spherical container to buffer, and then can flow into the counterweight water bladder. 1. Effectively slow down the buffering of the inner wall structure of the counterweight water bladder 1 and play a certain protective role.
  • the outer wall of the counterweight water bladder 1 is provided with a liquid level gauge 15, which has corresponding scales and buoys, which can reflect the height of the liquid level in the counterweight water bladder 1 from the scale indicated by the external buoy.
  • the bottom 15 is connected to the inside of the counterweight water bladder, and the two form a connector structure. The amount of water inside the counterweight water bladder can be observed through the indication corresponding to the external buoy.
  • the water supply part of the present invention includes a water supply tank, a water outlet valve for opening and closing the water outlet of the water supply tank, a one-way valve for preventing backflow of water in the counterweight water bladder, and for pumping water from the counterweight water bladder and The water is pumped back to the pump in the water supply tank.
  • a water supply tank there are two water supply tanks, one is the main water supply tank 2 and the other is the standby water supply tank 3, both of which are placed on the transport vehicle to facilitate mobile operations.
  • the main water supply tank 2 on the transport vehicle supplies water to the counterweight water bladder 1.
  • the standby water supply tank 3 is started to supply water.
  • the pump includes a main pump 11 and a backup pump 12 respectively matched with the main water tank 2 and the backup water tank 3.
  • the main pump 11 and the backup pump 12 can pump water into two water tanks for storage .
  • the water outlet valve includes a first water outlet valve 4 and a second water outlet valve 5 respectively responsible for opening and closing the water outlets of the main water supply tank 2 and the standby water supply tank 3, which are used to control the flow of water;
  • the first one-way valve 9 and the second one-way valve 10 in the outlet lines of the main water supply tank 2 and the standby water supply tank 3, the first one-way valve 9 and the second one-way valve 10 are respectively installed in Below the first water outlet valve 4 and the second water outlet valve 5 are used to prevent backflow of water during the water supply process.
  • the main water supply tank 2 and the backup water supply tank 3 are respectively provided with a main booster pump 13 and a backup booster pump 14 for accelerating the water filling speed and turning on the main booster pump 13 and the backup booster pump 14.
  • the weight water bladder 1 can be quickly filled with water.
  • a third one-way valve 7 and a fourth one-way valve 8 are also provided in the inlet pipes of the main water supply tank 2 and the standby water supply tank 3, respectively, and the third one-way valve 7 and the fourth one-way valve 8 are respectively It is installed in the pumping circuit of the main pump 11 and the backup pump 12 to prevent water from flowing back into the counterweight water bladder. Through the joint action of the four one-way valves 7, 8, 9, 10, the inlet and outlet water of the counterweight water bladder 1 and the water supply tank are guaranteed.
  • the main water supply tank 2 and the backup water supply tank 3 respectively have a first float ball valve 19 and a second float ball valve 20.
  • the structures of the first float ball valve 19 and the second float ball valve 20 are the same,
  • the floating ball 23 includes a floating ball on the water surface, a connecting rod 24 located under the floating ball 23, and a piston pad 25 connected to the connecting rod 24 and used to open and close the water outlet of the water supply tank.
  • the floating ball valves 19 and 20 are composed of a floating ball 23, a connecting rod 24, and a piston pad 25.
  • the floating ball 23 floats on the water surface of the water supply tanks 2 and 3. When the counterweight water bag 1 is supplied with water, The float 23 follows the water level and drives the connecting rod 24.
  • the connecting rod 24 pulls up the piston pad 25 and opens the outlet of the water supply tank.
  • the float 23 gradually rises with the rise of the water surface, driving the connecting rod 24, which connects the piston pad 25 to the outlet of the water tank Water stopped entering the water supply tank.
  • the floating ball 23 exists in the water supply tanks 2 and 3, and the floating ball always floats on the water surface. When the water surface rises, the floating ball also rises, and the floating ball rises to drive the connecting rod to rise.
  • the connecting rod is connected to the valve at the other end. When it rises to a certain position, the connecting rod presses the rubber piston pad 25 against the outlet of the water supply tank, and the water stops entering the water supply tank. When the water level drops, the floating ball 23 also drops, and the connecting rod 24 drives the piston pad 25 to open.
  • the liquid level of the water supply tank can be controlled through the float valve to prevent the water supply tank from entering excessive water.
  • the switch control part in the present invention includes a liquid level sensor 16, a humidity sensor 21, a PLC controller 18, a solenoid valve 6 and a buzzer 22.
  • the liquid level sensor 16 is connected with a liquid level gauge 15 to measure the liquid level
  • the static pressure in the gauge 15 converts the static pressure signal of the water in the level gauge 15 into an electrical signal
  • the humidity sensor 21 is installed on the outer wall of the counterweight water bladder 1 for detecting the humidity of the outer end of the counterweight water bladder 1,
  • the external environment humidity parameter signal of the counterweight water bladder 1 is converted into an electrical signal.
  • the PLC controller 18 is a bridge connecting the liquid level sensor 16, the humidity sensor 21 and the solenoid valve 6, and outputs an electrical signal through the liquid level sensor 16 and the humidity sensor 21 To the PLC controller 18, the output controls the on and off of the solenoid valve 6 to prevent the elevator from malfunctioning due to the leakage of the weight water bladder.
  • the solenoid valve 6 is a valve switch that controls the flow of water into the counterweight water bladder 1. It is responsible for opening and closing the water inlet of the counterweight water bladder 1, and automatically opens and closes the water inlet of the counterweight water bladder according to the required water load of the counterweight water bladder. The water inlet switch of the weight water sac that occurs when the weight water sac leaks and affects the elevator safety setting.
  • the buzzer 22 is connected to the humidity sensor 21, and performs an alarm function through the electrical signal output by the humidity sensor 21. When the outer end of the counterweight water bladder 1 is damaged or leaked, an alarm prompt is given.
  • the water by opening the inlet valve of the counterweight water bladder 1 and the outlet valve of the water supply tank, the water enters the counterweight water bladder 1 through the booster pump and the buffer 17 to complete the rapid increase of the elevator load.
  • the water By turning on the pump, the water is pumped into the water supply tank through the check valve to complete the unloading of the elevator.
  • the outer end of the counterweight water bladder is connected through the humidity sensor 21, and the signal is input to the PLC controller 18 to output a solenoid valve control signal to control the on-off of the solenoid valve 6.
  • the signal from the liquid level sensor 16 is input to the PLC controller 18, and the solenoid valve control signal is output to control the on and off of the solenoid valve 6, thereby satisfying the needs of the counterweight and realizing water supply and pumping.
  • the liquid level gauge 15 in the counterweight water sac 1 displays 0 at this time, the liquid level sensor 16 inputs a signal to the PLC controller 18, and the PLC controller 18 outputs a solenoid valve 6 Turn on the signal, open the solenoid valve 6, by opening the first outlet valve 4 of the main water supply tank 2 and the second outlet valve 5 of the standby water supply tank 3, and if necessary, the booster pumps 13, 14 are opened. After being buffered by the buffer 17, the water enters the counterweight water bladder 1, which realizes an increase in the counterweight of the elevator. When the water level in the counterweight tank 1 rises to the expected counterweight water level, a signal is input to the PLC controller 18 through the liquid level sensor 16 to control and close the solenoid valve 6.
  • the outlet valves 4, 5 and booster pumps 13 and 14 are closed, and the pumps 11 and 12 are turned on.
  • the water is drawn into the water supply tank through the bottom pipe of the counterweight water bladder 1, with the water level of the water supply tank.
  • Ascending when the water in the weight water bladder 1 is all pumped away, the water supply tank is just full, and under the action of the float valve, the water outlet of the water supply tank is closed. At this time, the pumps 11 and 12 are turned off to stop pumping.
  • the humidity sensor 21 always works, and the converted current signal is input into the PLC controller 18 and the buzzer 22, and the solenoid valve control signal and the alarm signal are output, which effectively plays the role of fault diagnosis and processing .
  • the unloaded elevator test and test device of the present invention can automatically adjust the water level according to the counterweight demand, and can be used to test the elevator in the form of water instead of the load, which solves the traditional elevator test needs to be manually carried according to different requirements of the counterweight The problem with weights.
  • the water tank and related devices are loaded by the transport vehicle, and the weight water sac is filled with water instead of lifting the weight of the elevator during the inspection, which shortens the inspection time .

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

L'invention concerne un dispositif de test d'ascenseur de type sans charge comprenant : une partie poche d'eau de contrepoids (1), disposée dans la cabine d'un ascenseur à tester, et utilisée pour charger l'ascenseur avec différents contrepoids ; une partie d'alimentation en eau, reliée à la partie poche d'eau de contrepoids (1), et utilisée pour ajouter de l'eau dans la partie poche d'eau de contrepoids (1) et aspirer de l'eau depuis la partie poche d'eau de contrepoids (1) ; et une partie de commande de commutateur, utilisée pour commander à la partie d'alimentation en eau d'ajouter de l'eau dans la partie poche d'eau de contrepoids (1) ou d'aspirer de l'eau depuis cette dernière en fonction de la quantité d'eau dans la partie poche d'eau de contrepoids (1). La présente invention réalise un test d'ascenseur grâce à l'eau plutôt qu'à une charge, ce qui résout le problème selon lequel, dans un test d'ascenseur classique, des poids doivent être transportés manuellement en fonction de différentes exigences de contrepoids. Le test d'ascenseur est réalisé par le chargement d'un réservoir d'alimentation en eau et des dispositifs associés au moyen d'un véhicule de transport, puis par le remplissage d'eau dans la poche d'eau de contrepoids (1) au lieu de porter les poids, de telle sorte que le temps de test est raccourci, et que la poche d'eau de contrepoids (1) peut être utilisée de manière pratique et peut être récupérée facilement après le test d'ascenseur, ce qui permet d'économiser le travail et d'augmenter l'efficacité de travail.
PCT/CN2019/115427 2018-11-16 2019-11-04 Dispositif de test d'ascenseur de type sans charge WO2020098525A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811369153.8 2018-11-16
CN201811369153.8A CN109470503A (zh) 2018-11-16 2018-11-16 一种无载荷形式的电梯试验测试装置

Publications (1)

Publication Number Publication Date
WO2020098525A1 true WO2020098525A1 (fr) 2020-05-22

Family

ID=65673887

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/115427 WO2020098525A1 (fr) 2018-11-16 2019-11-04 Dispositif de test d'ascenseur de type sans charge

Country Status (2)

Country Link
CN (1) CN109470503A (fr)
WO (1) WO2020098525A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109470503A (zh) * 2018-11-16 2019-03-15 辽宁工程技术大学 一种无载荷形式的电梯试验测试装置
CN110044650A (zh) * 2019-05-23 2019-07-23 重庆迈高电梯有限公司 一种用于电梯载荷试验的加载系统及加载方法
CN110411772B (zh) * 2019-08-02 2021-03-23 广州特种机电设备检测研究院 电梯无载静态曳引试验检测方法及装置
CN113287651B (zh) * 2021-04-28 2022-11-25 山东源泉食品有限公司 一种用于冻肉刨片机上的配重进给机构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2465578A (en) * 2008-11-20 2010-05-26 Water Weights Ltd Load test apparatus
CN204612203U (zh) * 2015-05-13 2015-09-02 皖西学院 一种太阳能热水器上水装置
CN205257694U (zh) * 2015-12-14 2016-05-25 江苏大学 一种基于水箱的电梯载重校验装置
CN106315351A (zh) * 2016-08-24 2017-01-11 浙江三永机械有限公司 一种改进的电梯空轨检测装置的配重结构
CN207649918U (zh) * 2017-12-25 2018-07-24 郑州恺德尔科技发展有限公司 用于起重设备载重检验的便携式水袋
CN207908180U (zh) * 2018-03-21 2018-09-25 陈传斌 一种水砝码
CN109470503A (zh) * 2018-11-16 2019-03-15 辽宁工程技术大学 一种无载荷形式的电梯试验测试装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09208148A (ja) * 1996-02-06 1997-08-12 Toshiba Corp エレベータ用油圧ユニットの負荷シミュレータ
CN103482455B (zh) * 2013-09-25 2016-02-10 吴江骏达电梯部件有限公司 一种自动调节对重的电梯系统
CN106698128B (zh) * 2016-11-30 2020-09-08 四川省特种设备检验研究院 无载荷电梯超载测量系统及方法
CN207280708U (zh) * 2017-05-04 2018-04-27 仲润泽 漏水监测装置及系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2465578A (en) * 2008-11-20 2010-05-26 Water Weights Ltd Load test apparatus
CN204612203U (zh) * 2015-05-13 2015-09-02 皖西学院 一种太阳能热水器上水装置
CN205257694U (zh) * 2015-12-14 2016-05-25 江苏大学 一种基于水箱的电梯载重校验装置
CN106315351A (zh) * 2016-08-24 2017-01-11 浙江三永机械有限公司 一种改进的电梯空轨检测装置的配重结构
CN207649918U (zh) * 2017-12-25 2018-07-24 郑州恺德尔科技发展有限公司 用于起重设备载重检验的便携式水袋
CN207908180U (zh) * 2018-03-21 2018-09-25 陈传斌 一种水砝码
CN109470503A (zh) * 2018-11-16 2019-03-15 辽宁工程技术大学 一种无载荷形式的电梯试验测试装置

Also Published As

Publication number Publication date
CN109470503A (zh) 2019-03-15

Similar Documents

Publication Publication Date Title
WO2020098525A1 (fr) Dispositif de test d'ascenseur de type sans charge
CN101694437A (zh) 水套及应用该水套的水压试验装置
CN106525358A (zh) 阀门压力测试系统及方法
CN110057431A (zh) 一种带翻转平台的混合气体充填装置及方法
CN103033426A (zh) 一种脉冲检测系统及测试方法
CN206158987U (zh) 一种真空泵性能测试系统
CN110409565A (zh) 蓄水压力罐自动加气系统及其实现方法
CN111765145A (zh) 一种电液动高压测试系统及测试装置
CN106443030A (zh) 气瓶自动化试验系统
CN207114366U (zh) 一种水泥基浆体水下抗分散性能测试装置
CN208283015U (zh) 水泵电机气密性检测装置
CN208476504U (zh) 一种净水器动压测试仪
CN210339983U (zh) 一种电梯载荷试验装置
CN209727365U (zh) 用于灭火器气密性检测的检查头及检查罩
CN106289997A (zh) 一种压力试验检测装置
CN107202735B (zh) 一种液罐强度的检测方法
CN206930415U (zh) 阀门压力测试设备
CN201517983U (zh) 水套及应用该水套的水压试验装置
CN220851787U (zh) 一种用于水下密闭舱的排水设备
CN117734902B (zh) 一种压载舱强度试验设备及试验方法
CN220525258U (zh) 一种单流阀漏失量测定装置
CN104062112A (zh) 一种多功能检测台
CN220063680U (zh) 一种钢瓶水套试验机
CN221123517U (zh) 一种无接触体积测量装置
CN219870726U (zh) 一种浮球阀壳体强度的试验设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19885401

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19885401

Country of ref document: EP

Kind code of ref document: A1