WO2023002519A1 - 液圧機器監視システム - Google Patents
液圧機器監視システム Download PDFInfo
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- WO2023002519A1 WO2023002519A1 PCT/JP2021/026916 JP2021026916W WO2023002519A1 WO 2023002519 A1 WO2023002519 A1 WO 2023002519A1 JP 2021026916 W JP2021026916 W JP 2021026916W WO 2023002519 A1 WO2023002519 A1 WO 2023002519A1
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- Prior art keywords
- hydraulic
- control device
- monitoring system
- maintenance
- state
- Prior art date
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- 239000007788 liquid Substances 0.000 title claims abstract description 72
- 238000012544 monitoring process Methods 0.000 title claims abstract description 44
- 238000012423 maintenance Methods 0.000 claims abstract description 35
- 239000004973 liquid crystal related substance Substances 0.000 claims description 15
- 238000007562 laser obscuration time method Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 22
- 239000000428 dust Substances 0.000 description 15
- 238000004891 communication Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- 239000003566 sealing material Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
Images
Classifications
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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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
-
- 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/857—Monitoring of fluid pressure systems
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/87—Detection of failures
Definitions
- This invention relates to a hydraulic equipment monitoring system that monitors the state of hydraulic equipment.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2019-194484
- Patent Document 2 Japanese Patent Application Laid-Open No. 2018-054021
- Patent Document 3 Japanese Patent Application Laid-Open No. 2017-089668
- Patent Document 4 Japanese Patent Application Laid-Open No. 2016-045068
- a hydraulic equipment monitoring system includes a hydraulic equipment, a hydraulic pressure sensor for monitoring the hydraulic pressure inside the hydraulic equipment, a display device for displaying the state of the hydraulic equipment, and the display device. and a control device, wherein the control device is in any state of normal operation, maintenance, or out of use based on a signal obtained from the hydraulic pressure sensor. and a second step of displaying, on the display device, any of the normal operation state, the maintenance state, and the out-of-use state, based on the determination result of the first step. include.
- the display device has a normal operation lighting unit, a maintenance lighting unit, and a use stop lighting unit, and the control device controls the normal operation lighting unit, Either the maintenance lighting section or the use stop lighting section is turned on.
- the display device includes a liquid crystal display
- the control device displays the start time of the normal operation, the start date and time of the transition to the maintenance, and the start of the transition to the suspension of use on the liquid crystal display. Display date and time.
- a sounding device is further provided, and the control device operates the sounding device when it is determined that the maintenance is performed in the second step of the control device.
- control device operates the sound generating device when it is determined in the second step of the control device that the usage is stopped.
- control device makes different tones when the sounding device is operated when the maintenance is determined and when it is determined to be out of use.
- a plurality of the hydraulic devices including the hydraulic pressure sensors are included, and the control device controls the hydraulic pressure devices corresponding to the respective hydraulic devices based on signals obtained from the plurality of the hydraulic pressure sensors.
- the first step and the above second step are executed.
- signals are transmitted between the hydraulic pressure sensor and the control device by a wired system or a wireless system.
- an operation panel is provided outside, and signals are transmitted between the operation panel and the control device by a wired system or a wireless system.
- this hydraulic equipment monitoring system it is possible to provide a hydraulic equipment monitoring system that more accurately grasps the maintenance timing of the sealing material and prevents the occurrence of liquid leakage.
- FIG. 4 is a cross-sectional view showing a state in which the configuration of the liquid leakage detection unit employed in the hydraulic equipment monitoring system in the embodiment is assembled to the shaft;
- BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows schematic structure of the hydraulic equipment monitoring system in embodiment.
- 1 is a configuration diagram of a hydraulic device monitoring system according to an embodiment;
- FIG. It is a figure which shows the operation
- It is a figure which shows the display provided in the system main body of the hydraulic equipment monitoring system in embodiment.
- FIG. 10 is a cross-sectional view showing a state in which the configuration of a liquid leakage detection unit employed in a hydraulic device monitoring system according to another embodiment is assembled to a shaft; It is a figure which shows schematic structure of the hydraulic equipment monitoring system in other embodiment.
- a hydraulic equipment monitoring system will be described below with reference to the drawings.
- the scope of the present invention is not necessarily limited to the number, amount, etc., unless otherwise specified.
- the same reference numbers are given to the same parts and equivalent parts, and duplicate descriptions may not be repeated.
- the seal structure shown below is an example, and the liquid leakage detection unit and hydraulic device monitoring system described below can be applied to various other seal structures.
- FIG. 1 is a cross-sectional view showing a state in which a liquid leakage detection unit 100 using a liquid pressure sensor according to the present embodiment is attached to a shaft.
- this liquid leakage detection unit 100 is an assembly unit that is assembled to the shaft 21 of the hydraulic cylinder 20.
- Shaft 21 has a shape extending axially along central axis 101 .
- the shaft 21 is a movable shaft. In this embodiment, it is assumed that the shaft 21 is the shaft of the hydraulic cylinder 20 .
- the shaft 21 reciprocates in the axial direction of the central axis 101 .
- a housing 31 is provided on the outer circumference of the shaft 21 .
- the housing 31 has a cylindrical shape extending in the axial direction of the central axis 101 .
- a liquid side space 60 is defined on the outer circumference of the shaft 21 .
- the liquid side space 60 is filled with oil.
- the liquid side space 60 is provided as a hydraulic chamber to which oil for operating the shaft 21 is supplied.
- the liquid side space 60 is provided on one side of the housing 31 in the axial direction of the central axis 101 .
- An external space 70 is defined on the other side of the housing 31 in the axial direction of the central axis 101 .
- This liquid leak detection unit 100 has a first rod seal 23A as a primary seal, a second rod seal 23B as a secondary seal, and a deformed dust seal 26 as a tertiary seal.
- the first rod seal 23A, the second rod seal 23B, and the deformed dust seal 26 are closed annular sealing materials.
- the first rod seal 23A, the second rod seal 23B, and the deformed dust seal 26 are made of elastic material such as rubber.
- the first rod seal 23A, the second rod seal 23B, and the deformed dust seal 26 are provided on the outer peripheral surface 21a of the shaft 21. As shown in FIG.
- the first rod seal 23A, the second rod seal 23B, and the deformed dust seal 26 are spaced apart in the axial direction of the central axis 101 .
- the first rod seal 23A is provided on the liquid side space 60 side
- the deformed dust seal 26 is provided on the external space 70 side.
- the second rod seal 23B is arranged between the first rod seal 23A and the deformed dust seal 26. As shown in FIG.
- a first seal groove 38A, a second seal groove 38B, and a third seal groove 39 are formed in the housing 31.
- the first seal groove 38A, the second seal groove 38B, and the third seal groove 39 are recessed from the inner peripheral surface 31b of the housing 31 and have groove shapes that revolve around the central axis 101.
- the first seal groove 38A and the second seal groove 38B have rectangular cross sections.
- the third seal groove 39 has a rectangular cross section that opens toward the outer space 70 in the axial direction of the central axis 101 .
- the first rod seal 23A is housed in the first seal groove 38A
- the second rod seal 23B is housed in the second seal groove 38B
- the irregular dust seal 26 is housed in the third seal groove 39.
- An inter-seal space 65 is defined between the first rod seal 23A and the second rod seal 23B on the outer circumference of the shaft 21 .
- the first rod seal 23A has a sealing function of sealing the oil arranged in the liquid side space 60.
- the deformed dust seal 26 has a lip portion 27 (first lip portion), a lip portion 28 (second lip portion) and a base portion 29 as its constituent parts.
- the base 29 is installed in the third seal groove 39 .
- Lip portion 27 and lip portion 28 extend from base portion 29 toward shaft 21 and contact outer peripheral surface 21 a of shaft 21 .
- the lip portion 27 is provided on the seal-to-seal space 65 side, and the lip portion 28 is provided on the outer space 70 side.
- the second rod seal 23B has a function of sealing oil that has entered the inter-seal space 65 from the liquid side space 60 into the inter-seal space 65 when oil leaks from the first rod seal 23A.
- the deformed dust seal 26 has a function of preventing dust from entering from the outer space 70 to the inter-seal space 65 side with the lip portion 28 .
- a sealing material configuration is adopted in which the second rod seal 23B, which has the function of sealing oil, and the deformed dust seal 26, which has the function of preventing dust from entering, are separated. It is also possible to employ a configuration in which a single seal member is used as both the 23B and the deformed dust seal 26 .
- a recess 32 and a through hole 33 are formed in the housing 31 .
- the recess 32 and the through hole 33 are defined between the first rod seal 23A and the second rod seal 23B in the axial direction of the central axis 101.
- the recess 32 is recessed from the inner peripheral surface 31 b of the housing 31 and has a shape that revolves around the central axis 101 .
- the through hole 33 functions as a sensing port 33P.
- a first block 120 is connected to the housing 31 .
- a hole 120 ⁇ /b>P communicating with the through hole 33 of the housing 31 is provided in the first block 120 .
- a first liquid pressure sensor 110 as a first liquid information obtaining device for obtaining liquid information of the liquid positioned in the inter-seal space 65 through the sensing port 33P is provided in the outlet region of the hole 120P. The hydraulic pressure of the liquid located in the inter-seal space 65 measured by the first hydraulic pressure sensor 110 is sent to the controller 180 .
- a second block 170 is connected to the liquid side space 60 of the housing 31 .
- the second block 170 is provided with an application port 170P communicating with the liquid side space 60 .
- a hydraulic pressure applying device 160 and a second liquid pressure sensor 150 as a second liquid information acquiring device for obtaining liquid information of the liquid located in the liquid side space 60 are connected to the applying port 170P.
- the hydraulic pressure of the liquid located in the liquid side space 60 measured by the second hydraulic pressure sensor 150 is sent to the control device 180 .
- the liquid pressure in each space measured by the first liquid pressure sensor 110 and the second liquid pressure sensor 150 is analyzed by the control device 180 .
- the seal state of the shaft 21 of the hydraulic cylinder 20 provided with the liquid leak detection unit 100 is determined to be one of "normal operation”, “maintenance”, and “stopped use”.
- the discrimination is calculated based on the total usage time of the seal, the hydraulic pressure applied to the seal, the number of times of detection, and the hydraulic pressure of the liquid in the space.
- the content of the alert indicates the replacement level in the order of "SAFETY 'Normal Operation'" ⁇ 'EXCHANGE 'Maintenance'' ⁇ DANGER 'Discontinued''.
- SAFETY means that the sealing material can be used safely and securely.
- EXCHANGE 'maintenance' means that the sealing material can be used continuously, but maintenance should be performed from the start of maintenance preparation.
- DANGER 'out of use' means a state in which the equipment should be immediately stopped for maintenance.
- FIG. 2 is a diagram showing a schematic configuration of the hydraulic equipment monitoring system 1000
- FIG. 3 is a configuration diagram of the hydraulic equipment monitoring system 1000
- FIG. 4 is a diagram showing the operation contents of the hydraulic equipment monitoring system.
- the liquid pressure equipment monitoring system 1000 can have one channel or two or more channels of the liquid leak detection unit 100 .
- a hydraulic equipment monitoring system 1000 includes eight liquid leakage detection units 100, a system main body 200, and a terminal 400.
- the terminal 400 is externally attached in order to reduce the size of the housing of the system main body 200 .
- the terminal 400 may be accommodated inside the housing of the system main body 200 if the external capacity of the housing does not matter.
- the system body 200 has a control device 180, a power button 210, a channel selection button 220, an alert display light 230, a reset button (return button) 240, a liquid crystal display 250, a buzzer 260, a buzzer stop button 270, and an internal memory 280. .
- Signals from the first liquid pressure sensor 110 and the second liquid pressure sensor 150 of each of the eight liquid leak detection units 100 are input to the control device 180 via the terminal 400 .
- the controller 180 monitors the hydraulic equipment of each channel based on this input signal.
- the liquid pressure in each space measured by the first liquid pressure sensor 110 and the second liquid pressure sensor 150 and the number of detections are analyzed by the control device 180 . Based on the analysis result, the control device 180 determines whether the seal state of the shaft 21 provided with the liquid leak detection unit 100 in each channel is one of "normal operation”, “maintenance”, and "stopped use”. to discriminate.
- the controller 180 individually monitors a plurality of liquid leak detection units 100 as described above.
- the control device 180 transmits alerts corresponding to each channel step by step.
- the content of the alert includes changes in the alert display light 230 as a display device (green ⁇ yellow ⁇ red), display content on the liquid crystal display 250 (status and log of state changes), and a buzzer 260 as a sound generator (silent ⁇ intermittent sound ⁇ continuous sound).
- the alert display light 230 is displayed in blue (normal operation lighting portion), and the liquid crystal display 250 is displayed as follows.
- the display of "SAFTY” and the buzzer 260 are silent.
- the alert display light 230 displays yellow (maintenance lighting portion)
- the liquid crystal display 250 displays "EXCHANG”
- the buzzer 260 sounds intermittently.
- the alert display light 230 displays red (disabled lighting portion)
- the liquid crystal display 250 displays "DANGER”
- the buzzer 260 emits a continuous sound.
- the monitor can easily recognize the state of the channel by making the tone of the buzzer 260 different when it is determined to be in maintenance and when it is determined to be out of service.
- the buzzer sounds, the observer can turn off the sound by operating the buzzer stop button.
- alerts can be remotely monitored and alerts can be received by connecting the system main body 200 to an external control panel 300 and equipment monitoring room (not shown).
- the control device 180 determines whether the hydraulic equipment of the corresponding channel is in normal operation, maintenance, or out of service. It is determined in which state it is (first step). After that, based on the determination result of the first step, whether the hydraulic equipment of the corresponding channel is in normal operation, maintenance, or out of service state is displayed on the alert display light 230 and the liquid crystal display 250, which are display devices. Display (second step). Channel selection buttons 220 are used to switch the channels of the liquid crystal display 250 .
- the liquid crystal display 250 displays the start date of normal operation, the start date and time of transition to maintenance, and the start date and time of transition to suspension for each channel. Channels that are not connected, or channels that have no signal due to a failure or disconnection have no status display.
- Logs (recorded data of events) when an alert state occurs should be saved in the internal memory 280. This makes it possible to diagnose by extracting recorded data stored in the internal memory 280 through external access.
- the software of the system itself can be updated by external access.
- FIG. 6 is a cross-sectional view showing a state in which the configuration of the liquid leakage detection unit 100 employed in the hydraulic equipment monitoring system 1000A according to another embodiment is assembled to a shaft
- FIG. 7 shows the hydraulic equipment monitoring system 1000A. It is a figure which shows schematic structure.
- liquid leak detection unit 100 In the liquid leak detection unit 100 described above, signal transmission between the first hydraulic pressure sensor 110 and the control device 180 and between the second hydraulic pressure sensor 150 and the control device 180 is by wire. Even when the operation panel 300 was provided, signal transmission between the operation panel 300 and the control device 180 was by wire. On the other hand, the liquid leakage detection unit 100A uses a wireless system.
- wireless communication means for example, any one of Bluetooth (registered trademark), Zigbee (registered trademark), and wireless LAN may be applied.
- first hydraulic pressure sensor 110 and second hydraulic pressure sensor 150 and controller 180 that processes measurement data obtained from first hydraulic pressure sensor 110 and second hydraulic pressure sensor 150, Connected for two-way communication by wireless communication means, first hydraulic pressure sensor 110 and second hydraulic pressure sensor 150 measure based on a measurement start signal from control device 180, and these measurement data are sequentially transmitted to the control device. 180.
- control device 180 There are a plurality of wireless networks constructed by the control device 180 and the plurality of first hydraulic pressure sensors 110 and second hydraulic pressure sensors 150, and one control device 180 corresponds to each wireless network.
- Control device 180 specifies each first hydraulic pressure sensor 110 and second hydraulic pressure sensor 150 and communicates with each of first hydraulic pressure sensor 110 and second hydraulic pressure sensor 150. and a unit setting file.
- the control device 180 For each communication area where radio waves of wireless communication reach, the control device 180 detects the pressure from the first hydraulic pressure sensor 110 and the second hydraulic pressure sensor 150 existing in the wireless network constructed within the communication area. For each of the first hydraulic pressure sensor 110 and the second hydraulic pressure sensor 150 whose identifiers are obtained by the unit number setting function, as well as the unique identifiers assigned in advance to the first hydraulic pressure sensor 110 and the second hydraulic pressure sensor 150 , the set unit number and the identifier are associated with each other and saved in the unit setting file. Thereafter, for each communication area, the unit setting file is read, the unit number is specified, and the second It communicates with the first hydraulic pressure sensor 110 and the second hydraulic pressure sensor 150 .
- signal transmission between the operation panel 300 and the control device 180 is connected by wireless communication means so as to enable two-way communication.
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Abstract
Description
図1を参照して、液体漏れ検知ユニット100の構成について説明する。図1は、本実施の形態における液圧センサを用いた場合の液体漏れ検知ユニット100をシャフトに組み付けた状態を示す断面図である。
次に、図2から図4を参照して、液圧機器監視システム1000について説明する。図2は、液圧機器監視システム1000の概略構成を示す図、図3は液圧機器監視システム1000の構成図、図4は、液圧機器監視システムの動作内容を示す図である。
初めに、監視者が、電源ボタン210により電源をON状態にする。これにより、制御装置180は、監視開始する。制御装置180に接続しているチャネルより信号を受けると、ステータスを表示する。また、必要に応じてアラートを発信する。
図6および図7を参照して、他の実施の形態における液圧機器監視システム1000について説明する。図6は、他の実施の形態における液圧機器監視システム1000Aに採用される液体漏れ検知ユニット100の構成をシャフトに組付けた状態を示す断面図、図7は、液圧機器監視システム1000Aの概略構成を示す図である。
Claims (9)
- 液圧機器と、
前記液圧機器の内部の液圧を監視する液圧センサと、
前記液圧機器の状態を表示する表示装置と、
前記表示装置の状態を初期状態に戻す復帰装置と、
制御装置と、
を備え、
前記制御装置は、
前記液圧センサから得られる信号に基づいて、正常稼働、メンテナンス、および、使用停止のいずれの状態であるかを判断する第1ステップと、
前記第1ステップの判断結果に基づいて、前記表示装置に前記正常稼働、前記メンテナンス、および、前記使用停止のいずれの状態かを表示する第2ステップと、
を含む、液圧機器監視システム。 - 前記表示装置は、正常稼働点灯部、メンテナンス点灯部、および、使用停止点灯部を有し、
前記制御装置は、前記第2ステップの判断に基づき、前記正常稼働点灯部、前記メンテナンス点灯部、および、前記使用停止点灯部のいずれかを点灯させる、請求項1に記載の液圧機器監視システム。 - 前記表示装置は、液晶表示を含み、
前記制御装置は、前記液晶表示に、前記正常稼働の開始日、前記メンテナンスへの移行開始日時、および、前記使用停止への移行開始日時を表示する、請求項1または請求項2に記載の液圧機器監視システム。 - 発音装置をさらに備え、
前記制御装置は、前記制御装置の前記第2ステップにおいて、前記メンテナンスと判断した場合に、前記発音装置を作動させる、請求項3に記載の液圧機器監視システム。 - 前記制御装置は、前記制御装置の前記第2ステップにおいて、前記使用停止と判断した場合に、前記発音装置を作動させる、請求項4に記載の液圧機器監視システム。
- 前記制御装置は、前記メンテナンスと判断した場合と、前記使用停止と判断した場合との前記発音装置を作動させた場合の音色を異ならせる、請求項5に記載の液圧機器監視システム。
- 前記液圧センサを備える複数の前記液圧機器を含み、
前記制御装置は、複数の前記液圧センサから得られる信号に基づいて、各前記液圧機器に対応して、前記第1ステップおよび前記第2ステップを実行する、
請求項1から請求項6のいずれか1項に記載の液圧機器監視システム。 - 前記液圧センサと前記制御装置との間は、有線方式又は無線方式により信号の伝達が行なわれる、
請求項1から請求項7のいずれか1項に記載の液圧機器監視システム。 - 外部に操作盤が設けられ、
前記操作盤と前記制御装置との間は、有線方式又は無線方式により信号の伝達が行なわれる、
請求項1から請求項8のいずれか1項に記載の液圧機器監視システム。
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US18/570,383 US20240280119A1 (en) | 2021-07-19 | 2021-07-19 | Liquid pressure apparatus monitoring system |
DE112021007791.0T DE112021007791T5 (de) | 2021-07-19 | 2021-07-19 | Überwachungssystem für eine Flüssigkeitsdruckvorrichtung |
KR1020247000115A KR20240035786A (ko) | 2021-07-19 | 2021-07-19 | 액압 기기 감시 시스템 |
CN202180100737.9A CN117677776A (zh) | 2021-07-19 | 2021-07-19 | 液压设备监视系统 |
PCT/JP2021/026916 WO2023002519A1 (ja) | 2021-07-19 | 2021-07-19 | 液圧機器監視システム |
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- 2021-07-19 DE DE112021007791.0T patent/DE112021007791T5/de active Pending
- 2021-07-19 US US18/570,383 patent/US20240280119A1/en active Pending
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