CN205244808U - Self -lubricating bearing is with lubricated oil mass on -line measuring , warning and control system - Google Patents
Self -lubricating bearing is with lubricated oil mass on -line measuring , warning and control system Download PDFInfo
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- CN205244808U CN205244808U CN201520962932.4U CN201520962932U CN205244808U CN 205244808 U CN205244808 U CN 205244808U CN 201520962932 U CN201520962932 U CN 201520962932U CN 205244808 U CN205244808 U CN 205244808U
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Abstract
The utility model discloses a self -lubricating bearing is with lubricated oil mass on -line measuring, warning and control system, including the oil storage chamber, with food tray that the oil storage chamber links to each other, locate oil pump, flow sensor, bearing and the cooler of resistant oil on the food tray, wherein, the oil storage chamber is gone into to treat lubricatedly through a food tray, a flow sensor pump lubricating oil through an oil pump on the bearing, flow through the lubricating oil of bearing through cooler cooling back backward flow extremely the oil storage intracavity, a flow sensor and a controller signal are connected, reserve batch oil tank, reserve batch oil tank links to each other through a reserve oil circuit, still be equipped with on the reserve oil circuit one the solenoid valve that controller control can be opened or close down. The utility model discloses it is very convenient to use, and degree of automation is high, and maneuverability is good, and the modern design has greatly improved self -lubricating bearing stability, avoids the damage because lubricating oil supplies with not enoughly, and then improves whole mechanical system's stability, easily promotes and implements.
Description
Technical field
The utility model relates to and detects control technology field, relates in particular to that a kind of self-lubricating bearing lubricants capacity detects online, warning and control system.
Background technology
Traditional self-lubricating bearing is without Automatic Warning And Control System, when the lubricating oil of self-lubricating bearing former thereby while reducing owing to revealing etc., oil pocket interior oil potential drop is low, cause the food tray band oil mass of self-lubricating bearing sharply to reduce, self-lubricating bearing is because the cooling and lubrication that lacks lubricating oil breaks down.
Utility model content
The purpose of this utility model be to overcome the deficiency of above-mentioned prior art and provide that a kind of self-lubricating bearing lubricants capacity detects online, warning and control system, the utility model can detect the band oil mass of the described food tray of the described bearing of self-lubricating automatically, when detecting that food tray band oil mass reduces, can not meet self-lubricating bearing demand time, control system provides lubricating oil automatically, guarantee that bearing can normally move within a certain period of time, and and alarm.
For achieving the above object, a kind of self-lubricating bearing lubricants capacity that the utility model provides detects online, warning and control system, comprising:
The food tray, the oil pump of being located at oil resistant on described food tray, flow sensor, bearing and the cooler that are contained with the shoe cream room of lubricating oil, are connected with described shoe cream room, wherein, described shoe cream room is pumped into lubricating oil on described bearing to be lubricated through a food tray, a flow sensor by an oil pump, and the lubricating oil of the described bearing of flowing through is back in described shoe cream room after a cooler is cooling;
Described flow sensor is connected with a controller signals;
Fuel reserve tank for subsequent use, described fuel reserve tank for subsequent use is connected by an oil circuit for subsequent use, is also provided with a magnetic valve that can open or close under described controller control on described oil circuit for subsequent use;
The parameter that is back to described controller when described flow sensor is during lower than predetermined threshold value, now described controller is judged to be the low on fuel in described shoe cream room, described in described controller control, magnetic valve is opened, lubricating oil in described fuel reserve tank for subsequent use flows on described bearing through described magnetic valve, lubricating oil to described bearing be lubricated, cooling after in described cooler flows back into described fuel reserve tank; Until the parameter that described flow sensor returns is while being not less than described predetermined threshold value, closed electromagnetic valve described in described controller control.
Preferably, described flow sensor is connected with a controller signals by first communication device.
Preferably, described controller is connected with described magnetic valve signal by secondary communication device.
Preferably, described secondary communication device is a radio communication device.
Preferably, also comprise that one in order to measure the temperature element of described bearing temperature, described temperature element is electrically connected with described controller, measured temperature parameter is back to described controller by described temperature element, described controller compares described temperature parameter and default temperature threshold, when temperature parameter is during higher than default temperature threshold, the pump oil mass of the described oil pump that described controller control is electrically connected with it increases, and trigger electrical connection with it simultaneously can the alarm of release alarm signal in order to cause that staff notes.
Preferably, the use of described flow sensor one is located to a liquid level sensor in shoe cream room and that be electrically connected with controller to be substituted, described liquid level sensor is for measuring the level height of described shoe cream room and liquid level being back in described controller, when liquid level lower than default in controller oil level lower limit time, described controller triggers described magnetic valve makes described magnetic valve in open mode.
Preferably, be also provided with one in order to measure the second liquid level sensor of level height in described fuel reserve tank for subsequent use on described fuel reserve tank for subsequent use, described the second liquid level sensor is electrically connected with described controller and institute's measured value is returned.
Preferably, when described liquid level sensor, the second liquid level sensor are back to liquid level in described controller all lower than lower limit, described controller sends Equations of The Second Kind alarm signal to described alarm, occurs leaking oil condition in order to total oil mass of pointing out staff likely to occur in shoe cream room and fuel reserve tank for subsequent use lower than preset value, shoe cream room and or reserve fuel tank.
Preferably, on described shoe cream room, being also connected with can be to a manual injection system of bearing lubrication degree deficiency described in manually injecting lubricating oil in described shoe cream room and then can making up when described fuel reserve tank for subsequent use and or the solenoid valve failure, and described manual injection system is electrically connected with described alarm.
Preferably, described temperature element is an armoured Pt thermal resistance;
Described controller is a MCU controller able to programme;
The lubricating oil holding in described shoe cream room and described fuel reserve tank for subsequent use is same specification;
On described cooler, be also provided with some radiating fins;
Between described fuel reserve tank and described oil pump, be also provided with the screen pack that at least one filtering solid impurity is used.
The beneficial effects of the utility model are: the utility model can detect the band oil mass of the described food tray of the described bearing of self-lubricating automatically, when detecting that food tray band oil mass reduces, can not meet self-lubricating bearing demand time, control system provides lubricating oil automatically, guarantee that bearing can normally move within a certain period of time, and and alarm. by being set, flow sensor whether meets preset value in order to the amount of measuring the lubricating oil of supplying with described bearing, by controller being set in order to comparison and computing function to be provided to the utility model, by oil pump being set in order to the lubricating oil in shoe cream room is pumped on bearing, by arrange cooler in order to give lowered the temperature by the lubricating oil of described bearing heating, make the cooling of heated lubricating oil and then realization that the caloric value of described bearing is delivered to the external world, by liquid level sensor being set in order to measure level height, and then assist to judge whether level height meets preset value, when level height is during lower than preset value, controller triggers magnetic valve charging-up lubricant oil. by described alarm being set in order to provide alarm signal, described alarm signal can be sound and light alarm signal, described alarm can also be connected with server by radio, in order to realize remote measurement, in the time that shoe cream room is damaged, the make-up oil that described fuel reserve tank for subsequent use can be emergent, avoid bearing running hot and damage, and send alarm signal simultaneously, in the time that the lubricating oil in fuel reserve tank for subsequent use is also not enough, also can sends alarm signal prompting staff and fill into lubricating oil in fuel reserve tank for subsequent use. the utility model uses very convenient, automaticity is high, operability is good, good stability, practicality is good, modern design, improve greatly the coefficient of stability of self-lubricating bearing, avoid damaging because of lubricating oil undersupply, and then improve the stability of whole mechanical system, be easy to promotion and implementation.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model the first embodiment;
Fig. 2 is the structured flowchart of the utility model the second embodiment;
Fig. 3 is the structured flowchart of the utility model the 3rd embodiment;
Fig. 4 is the structured flowchart of the utility model the 4th embodiment;
Fig. 5 is the structured flowchart of the utility model the 5th embodiment;
Reference numeral:
Shoe cream room 10;
Self-checking system 1;
Oil pump 20;
Food tray 30;
Liquid level sensor 401;
Flow sensor 402;
The second liquid level sensor 403;
Bearing 50;
Temperature element 51;
Cooler 60;
Controller 70;
Alarm 71;
First communication device 72;
Manually injection system 73;
Fuel reserve tank 80 for subsequent use;
Secondary communication device 81;
Magnetic valve 82;
Overflow valve 821;
Self-checking system 2 83.
Realization, functional characteristics and the advantage of the utility model object, in connection with embodiment, are described further with reference to accompanying drawing.
Detailed description of the invention
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish. Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of instructions such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals. For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
Referring to figs. 1 through Fig. 5, Fig. 1 is the structured flowchart of the utility model the first embodiment; Fig. 2 is the structured flowchart of the utility model the second embodiment; Fig. 3 is the structured flowchart of the utility model the 3rd embodiment; Fig. 4 is the structured flowchart of the utility model the 4th embodiment; Fig. 5 is the structured flowchart of the utility model the 5th embodiment.
This embodiment is best embodiment, the embodiment of so-called the best is the most preferred embodiment that a kind of utility model people of overall merit claims, this comprehensive analysis cost, the one that the various factors such as effect form is judged, and can not think that more complicated technically scheme is just more conducive to implement, this most preferred embodiment is as described below: as Fig. 1, a kind of self-lubricating bearing 50 use lubricants capacities that the utility model provides detect online, report to the police, control system, comprise the shoe cream room 10 that is contained with lubricating oil, the food tray 30 being connected with described shoe cream room 10, be located at the oil pump 20 of oil resistant on described food tray 30, flow sensor 402, bearing 50 and cooler 60, wherein, described shoe cream room 10 by an oil pump 20 by lubricating oil through a food tray 30, one flow sensor 402 is pumped on described bearing 50 to be lubricated, the lubricating oil of described bearing 50 of flowing through is back in described shoe cream room 10 after a cooler 60 is cooling, described flow sensor 402 is connected with controller 70 signals, fuel reserve tank 80 for subsequent use, described fuel reserve tank 80 for subsequent use is connected by an oil circuit for subsequent use, is also provided with a magnetic valve 82 that can open or close under described controller 70 is controlled on described oil circuit for subsequent use, the parameter that is back to described controller 70 when described flow sensor 402 is during lower than predetermined threshold value, now described controller 70 is judged to be the low on fuel in described shoe cream room 10, described controller 70 controls that described magnetic valve 82 is opened, lubricating oil in described fuel reserve tank 80 for subsequent use flows on described bearing 50 through described magnetic valve 82, and lubricating oil is lubricated, flows back in described fuel reserve tank through described cooler 60 after cooling described bearing 50, until the parameter that described flow sensor 402 returns is while being not less than described predetermined threshold value, described controller 70 controls described magnetic valve 82 and cuts out.
As an embodiment of the present utility model, as shown in Figure 1, described flow sensor 402 is connected with controller 70 signals by first communication device 72.
As an embodiment of the present utility model, described controller 70 is connected with described magnetic valve 82 signals by secondary communication device 81.
As an embodiment of the present utility model, described secondary communication device 81 is radio communication devices. This radio communication device should be the wireless communication apparatus that meets existing home control network communication protocol, as Bluetooth protocol, as 802.11b/g/n wireless protocols etc., adopts which kind of wireless communication apparatus specifically to determine according to concrete enforcement scene.
As an embodiment of the present utility model, also comprise that one in order to measure the temperature element 51 of described bearing 50 temperature, described temperature element 51 is electrically connected with described controller 70, measured temperature parameter is back to described controller 70 by described temperature element 51, described controller 70 compares described temperature parameter and default temperature threshold, when temperature parameter is during higher than default temperature threshold, described controller 70 is controlled the pump oil mass of the described oil pump 20 of electrical connection with it to be increased, and simultaneously trigger with it electrical connection can the alarm 71 of release alarm signal in order to cause that staff notes.
Concrete, to implement armoured Pt thermal resistance and also replaced by armouring copper thermistor, this is conducive to save manufacturing cost.
As an embodiment of the present utility model, the use of described flow sensor 402 one is located to a liquid level sensor 401 in shoe cream room 10 and that be electrically connected with controller 70 to be substituted, described liquid level sensor 401 is for measuring the level height of described shoe cream room 10 and liquid level being back in described controller 70, when liquid level lower than default in controller 70 oil level lower limit time, described controller 70 triggers described magnetic valve 82 makes described magnetic valve 82 in open mode.
As an embodiment of the present utility model, on described fuel reserve tank for subsequent use 80, be also provided with one in order to measure the second liquid level sensor 403 of described fuel reserve tank for subsequent use 80 interior level height, described the second liquid level sensor 403 is electrically connected with described controller 70 and institute's measured value is returned.
As an embodiment of the present utility model, when described liquid level sensor 401, the second liquid level sensor 403 are back to liquid level in described controller 70 all lower than lower limit, described controller 70 sends Equations of The Second Kind alarm signal to described alarm 71, occurs leaking oil condition in order to total oil mass of pointing out staff likely to occur in shoe cream room 10 and fuel reserve tank for subsequent use 80 lower than preset value, shoe cream room 10 He or reserve fuel tank.
As an embodiment of the present utility model, on described shoe cream room 10, being also connected with can be to the interior manual injection lubricating oil of described shoe cream room 10 and then a manual injection system of bearing 50 degree of lubrication deficiencies described in can making up when described fuel reserve tank 80 He for subsequent use or magnetic valve 82 fault, and described manual injection system is electrically connected with described alarm 71.
As an embodiment of the present utility model, described temperature element 51 is armoured Pt thermal resistances; Described controller 70 is MCU controllers 70 able to programme; Described shoe cream room 10 is same specification with interior the held lubricating oil of described fuel reserve tank 80 for subsequent use; On described cooler 60, be also provided with some radiating fins; Between described fuel reserve tank and described oil pump 20, be also provided with the screen pack that at least one filtering solid impurity is used.
Concrete, described oil pump 20 is gear pump or oil resistant gear pump, the concrete model of institute's employing pump, can according to required pump oil mass number carry out concrete lectotype selection.
Concrete, it is refrigerant that described cooler 60 adopts water.
In sum, the utility model can detect the band oil mass of the described food tray 30 of the described bearing 50 of self-lubricating automatically, be with oil mass to reduce when food tray 30 being detected, can not meet self-lubricating bearing 50 demand time, control system provides lubricating oil automatically, guarantee that bearing 50 can normally move within a certain period of time, and and alarm. by being set, flow sensor 402 whether meets preset value in order to the amount of measuring the lubricating oil of supplying with described bearing 50, by controller 70 being set in order to comparison and computing function to be provided to the utility model, by oil pump 20 being set in order to the grease pump in shoe cream room 10 20 is entered to bearing 50, by cooler 60 being set in order to lower the temperature to the lubricating oil being heated by described bearing 50, make the cooling of heated lubricating oil and then realization that the caloric value of described bearing 50 is delivered to the external world, by liquid level sensor 401 being set in order to measure level height, and then assist to judge whether level height meets preset value, when level height is during lower than preset value, controller 70 triggers magnetic valve 82 charging-up lubricant oils. by described alarm 71 being set in order to provide alarm signal, described alarm signal can be sound and light alarm signal, described alarm 71 can also be connected with server by radio, in order to realize remote measurement, in the time that shoe cream room 10 is damaged, the emergent make-up oil of described fuel reserve tank for subsequent use 80 meeting, avoid bearing 50 overheated and damage, and send alarm signal simultaneously, in the time that the lubricating oil in fuel reserve tank 80 for subsequent use is also not enough, also can sends alarm signal prompting staff and fill into lubricating oil in fuel reserve tank 80 for subsequent use. the utility model uses very convenient, automaticity is high, operability is good, good stability, practicality is good, modern design, improve greatly the coefficient of stability of self-lubricating bearing 50, avoid damaging because of lubricating oil undersupply, and then improve the stability of whole mechanical system, be easy to promotion and implementation.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description. In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example. And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, amendment, replacement and modification.
Claims (10)
- Self-lubricating bearing with lubricants capacity detect online, warning and a control system, it is characterized in that, comprising:The food tray, the oil pump of being located at oil resistant on described food tray, flow sensor, bearing and the cooler that are contained with the shoe cream room of lubricating oil, are connected with described shoe cream room, wherein, described shoe cream room is pumped into lubricating oil on described bearing to be lubricated through a food tray, a flow sensor by an oil pump, and the lubricating oil of the described bearing of flowing through is back in described shoe cream room after a cooler is cooling;Described flow sensor is connected with a controller signals;Fuel reserve tank for subsequent use, described fuel reserve tank for subsequent use is connected by an oil circuit for subsequent use, is also provided with a magnetic valve that can open or close under described controller control on described oil circuit for subsequent use;The parameter that is back to described controller when described flow sensor is during lower than predetermined threshold value, now described controller is judged to be the low on fuel in described shoe cream room, described in described controller control, magnetic valve is opened, lubricating oil in described fuel reserve tank for subsequent use flows on described bearing through described magnetic valve, lubricating oil to described bearing be lubricated, cooling after in described cooler flows back into described fuel reserve tank; Until the parameter that described flow sensor returns is while being not less than described predetermined threshold value, closed electromagnetic valve described in described controller control.
- Self-lubricating bearing according to claim 1 with lubricants capacity detect online, warning and control system, it is characterized in that, described flow sensor is connected with a controller signals by first communication device.
- Self-lubricating bearing according to claim 1 with lubricants capacity detect online, warning and control system, it is characterized in that, described controller is connected with described magnetic valve signal by secondary communication device.
- Self-lubricating bearing according to claim 3 with lubricants capacity detect online, warning and control system, it is characterized in that, described secondary communication device is a radio communication device.
- 5. self-lubricating bearing according to claim 1 detects online with lubricants capacity, report to the police and control system, it is characterized in that, also comprise that one in order to measure the temperature element of described bearing temperature, described temperature element is electrically connected with described controller, measured temperature parameter is back to described controller by described temperature element, described controller compares described temperature parameter and default temperature threshold, when temperature parameter is during higher than default temperature threshold, the pump oil mass of the described oil pump that described controller control is electrically connected with it increases, and simultaneously trigger with it electrical connection can the alarm of release alarm signal in order to cause that staff notes.
- Self-lubricating bearing according to claim 1 with lubricants capacity detect online, warning and control system, it is characterized in that, the use of described flow sensor one is located to a liquid level sensor in shoe cream room and that be electrically connected with controller to be substituted, described liquid level sensor is for measuring the level height of described shoe cream room and liquid level being back in described controller, when liquid level lower than default in controller oil level lower limit time, described controller triggers described magnetic valve makes described magnetic valve in open mode.
- Self-lubricating bearing according to claim 6 with lubricants capacity detect online, warning and control system, it is characterized in that, on described fuel reserve tank for subsequent use, be also provided with one in order to measure the second liquid level sensor of level height in described fuel reserve tank for subsequent use, described the second liquid level sensor is electrically connected with described controller and institute's measured value is returned.
- Self-lubricating bearing according to claim 7 with lubricants capacity detect online, warning and control system, it is characterized in that, when described liquid level sensor, the second liquid level sensor are back to liquid level in described controller all lower than lower limit, described controller sends Equations of The Second Kind alarm signal to alarm, occurs leaking oil condition in order to total oil mass of pointing out staff likely to occur in shoe cream room and fuel reserve tank for subsequent use lower than preset value, shoe cream room and or reserve fuel tank.
- Self-lubricating bearing according to claim 8 with lubricants capacity detect online, warning and control system, it is characterized in that, on described shoe cream room, being also connected with can be to a manual injection system of bearing lubrication degree deficiency described in manually injecting lubricating oil in described shoe cream room and then can making up when described fuel reserve tank for subsequent use and or the solenoid valve failure, and described manual injection system is electrically connected with described alarm.
- Self-lubricating bearing according to claim 5 with lubricants capacity detect online, warning and control system, it is characterized in that,Described temperature element is an armoured Pt thermal resistance;Described controller is a MCU controller able to programme;The lubricating oil holding in described shoe cream room and described fuel reserve tank for subsequent use is same specification;On described cooler, be also provided with some radiating fins;Between described fuel reserve tank and described oil pump, be also provided with the screen pack that at least one filtering solid impurity is used.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962932.4U CN205244808U (en) | 2015-11-26 | 2015-11-26 | Self -lubricating bearing is with lubricated oil mass on -line measuring , warning and control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520962932.4U CN205244808U (en) | 2015-11-26 | 2015-11-26 | Self -lubricating bearing is with lubricated oil mass on -line measuring , warning and control system |
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| CN205244808U true CN205244808U (en) | 2016-05-18 |
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| CN201520962932.4U Active CN205244808U (en) | 2015-11-26 | 2015-11-26 | Self -lubricating bearing is with lubricated oil mass on -line measuring , warning and control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801780A (en) * | 2015-11-26 | 2017-06-06 | 湖南崇德工业科技有限公司 | A kind of self-lubricating bearing lubricants capacity on-line checking, alarm and control system |
| CN106931148A (en) * | 2017-04-28 | 2017-07-07 | 湖南省库塔科技有限公司 | Gear-box lubricating oil loading system and unmanned plane |
| CN108712509A (en) * | 2018-06-20 | 2018-10-26 | 上海庆科信息技术有限公司 | System, method and device for monitoring residual oil amount of oil injection pump of mechanical equipment and server |
| CN109937319A (en) * | 2016-10-18 | 2019-06-25 | 鲁贝株式会社 | The flow regime management system of fluid |
| CN110953474A (en) * | 2019-12-23 | 2020-04-03 | 北京海纳川汽车部件股份有限公司 | Soap liquid adding device for wheel assembly and control method |
-
2015
- 2015-11-26 CN CN201520962932.4U patent/CN205244808U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801780A (en) * | 2015-11-26 | 2017-06-06 | 湖南崇德工业科技有限公司 | A kind of self-lubricating bearing lubricants capacity on-line checking, alarm and control system |
| CN109937319A (en) * | 2016-10-18 | 2019-06-25 | 鲁贝株式会社 | The flow regime management system of fluid |
| CN106931148A (en) * | 2017-04-28 | 2017-07-07 | 湖南省库塔科技有限公司 | Gear-box lubricating oil loading system and unmanned plane |
| CN108712509A (en) * | 2018-06-20 | 2018-10-26 | 上海庆科信息技术有限公司 | System, method and device for monitoring residual oil amount of oil injection pump of mechanical equipment and server |
| CN110953474A (en) * | 2019-12-23 | 2020-04-03 | 北京海纳川汽车部件股份有限公司 | Soap liquid adding device for wheel assembly and control method |
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Address after: 411101 No.9, Chayuan Road, high tech Zone, Xiangtan City, Hunan Province Patentee after: Hunan Chongde Technology Co., Ltd Address before: 411101 Hunan Province, Xiangtan Shuangma Industrial Park Yuetang Hunan Chongde Industry Technology Co Ltd Patentee before: HUNAN SUND INDUSTRIAL AND TECHNOLOGICAL Co.,Ltd. |