CN2777337Y - Computer programme-controlled lubricating device - Google Patents
Computer programme-controlled lubricating device Download PDFInfo
- Publication number
- CN2777337Y CN2777337Y CN 200420052179 CN200420052179U CN2777337Y CN 2777337 Y CN2777337 Y CN 2777337Y CN 200420052179 CN200420052179 CN 200420052179 CN 200420052179 U CN200420052179 U CN 200420052179U CN 2777337 Y CN2777337 Y CN 2777337Y
- Authority
- CN
- China
- Prior art keywords
- oil
- monitoring device
- lubricating
- electromagnetic valve
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 38
- 238000012806 monitoring device Methods 0.000 claims abstract description 35
- 238000004590 computer program Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 abstract description 81
- 238000005461 lubrication Methods 0.000 abstract description 10
- 239000010687 lubricating oil Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 238000005242 forging Methods 0.000 abstract description 2
- -1 mines Substances 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000004035 construction material Substances 0.000 abstract 1
- 239000004753 textile Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 6
- 230000005856 abnormality Effects 0.000 description 5
- 239000004519 grease Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000346 nonvolatile oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The utility model relates to a computer programme-controlled lubricating device which comprises an oil pump driven by an electric machine and an oil supply line connected between the oil pump and each oil filling point. A filter, a pressure monitoring device and an oil mass monitoring device are arranged on an oil passage outlet, wherein an electromagnetic valve is arranged on an oil supply pipe between the output end of the oil mass monitoring device and each oil filling point, and the electromagnetic valve is arranged by one-to-one corresponding to each oil filling point. A programme-controlled device is electrically connected with the electric machine, the pressure monitoring device, the oil mass monitoring device and each electromagnetic valve. The utility model can separately supply oil for a plurality of lubrication points at the same time and can adapt to various thick and thin lubricating oil or lubricating greases, and the utility model has the advantages of judging the operating state of each lubricating point in time, reducing labor intensity, etc. The utility model can fundamentally reduce the failure rate of lubricating systems and ensure the normal running of equipment, and the utility model can be widely used for the technical field of lubrication for transmission components related to equipment in industries, such as metallurgy, rubber, plastic, paper manufacture, construction material, mines, textile, forging and stamping, hoisting, electric power, chemical industries, etc.
Description
Technical Field
The utility model belongs to the lubricating arrangement field especially relates to one kind by program control device control, be used for from fixed oil tank in with lubricating oil supply machine or by lubricated piece within or on the centralized lubrication oil supply unit.
Background
Any part with mechanical friction is worn, and under the condition that the material selection and the processing precision of the friction part are certain, the service life of the equipment is the first determining factor of lubrication maintenance
At present, most of large and medium-sized or complete equipment transmission devices in the industries of metallurgy, mines, building materials, hoisting and the like are lubricated by using a traditional distributor type lubricating system, a multi-point direct supply type lubricating system or a manual oil injection mode.
The above lubrication method has the following disadvantages:
distributor-type lubrication system: the failure rate of the distributor is high, the inspection is difficult, and the maintenance is required to be carried out when the equipment is stopped;
multi-point direct supply type lubricating system: the lubrication mode is not intuitive, and particularly, the dry oil (grease) lubrication is easy to block and evacuate, so that the lubrication fault is caused and is difficult to find;
manual oiling mode: the method needs to be carried out in a shutdown state, the production efficiency and the lubricating effect of equipment are influenced, and the labor intensity of oil feeders is high and the personal safety of the oil feeders is difficult to be fully ensured in industries such as lifting, ports and the like.
A Chinese patent with publication date of 12 and 7 in 1994 and publication number of CN 2184844Y discloses a mechanical full-automatic timing and quantitative lubricating oil supply device, which comprises an oil storage tank, an oil pumping pipe fixed on the oil storage tank, and an oil pump controlled by a timing switch on the oil pumping pipe. The oil can be automatically supplied in fixed time and fixed quantity as long as the on-off time and the interval of the timing switch are set according to requirements. However, the oil pump has the limitation that the oil pump is frequently started and stopped and only can be suitable for one oil supply pipeline.
The Chinese patent with publication date of 1997, 4, 30 and publication number of CN 2253424Y discloses an electronic control timing and quantitative oiling device, which comprises: the electromagnetic valve and the control circuit 10 for controlling the opening and closing of the electromagnetic valve which are positioned at the lower part of the oil cup 1 are characterized in that the electromagnetic valve has the structure as follows: a valve cover 2 with a through hole in the electromagnetic valve is connected with the outlet of the oil cup 1, a pressure plate 3 and a valve core 5 are arranged below the valve cover 2, the lower end of the valve core 5 is fixedly connected with a steel ball 7, the valve core 5 is provided with a spring 6 in a through hole, the upper end of the spring 6 is supported in a pressure plate 3, the lower end is pressed on a steel ball 7, a valve seat 8 is arranged below the steel ball 7, a coil 4 is wound outside the valve core 5, the coil 4 is connected with a control circuit 10, the lubricating and supplying device adopts an electronic circuit to carry out timing and delay control, an electronic oscillator outputs pulse counting, the delay circuit is triggered when the set pulse counting is reached, then the current is enabled to pass through the coil 4 in the electromagnetic valve, the valve core 5 rises to be away from the valve seat 8, the electromagnetic valve is opened, the lubricating oil flows out, after the oil is added, the time delay circuit resets, the coil is powered off, the spring 6 in the electric valve core 5 enables the valve core 5 to reset downwards, the valve core and the valve seat 8 are closed, and the electromagnetic valve is closed. However, the lubricating grease can only control one oil adding point, can only adapt to the condition of using lubricating oil, and cannot be used in places using lubricating grease; for large or medium-sized equipment with dozens or even hundreds of oil filling points, the method is high in cost, and the problem that the normal operation of all the lubricating points cannot be guaranteed because the oil way fails to be found in time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a computer program-controlled lubricating device that does not have the distributor, can carry out the fuel feeding respectively to a plurality of lubricating points simultaneously, can adapt to various dry, rare lubricating oil or lubricating grease, can in time judge the operating condition of each lubricating point, can improve operational environment, alleviate intensity of labour.
The technical scheme of the utility model is that: the computer program-controlled lubricating device comprises an oil pump driven by a motor and an oil supply pipeline connected between the oil pump and each oil filling point, and is characterized in that a filter, a pressure monitoring device and an oil quantity monitoring device are arranged at an oil path outlet of the oil pump; an electromagnetic valve is arranged on an oil supply pipe between the output end of the oil quantity monitoring device and each oil filling point; setting a program control device; the electromagnetic valves are correspondingly arranged with each oil filling point in a one-to-one manner; one end of the electromagnetic valve is connected with the output end of the oil quantity monitoring device, and the other end of the electromagnetic valve is connected with a corresponding oil filling point through an oil supply pipe; the program control device is electrically connected with the motor, the pressure monitoring device, the oil quantity monitoring device and each electromagnetic valve. The pressure monitoring device is an electric contact pressure gauge, a pressure sensor, a pressure difference switch or a pressure transmitter.
The oil quantity monitoring device is a plunger type, piston type, worm and gear type or rotary vane type oil supply device.
The electromagnetic valve is an electromagnetic reversing valve and is a two-position single-way, two-position two-way, two-position three-way or two-position multi-way electromagnetic valve.
The program control device is a single chip microcomputer, a single board computer, a PLC programmable control device or a programmable industrial personal computer, an I/O interface of the program control device is correspondingly connected with signal output ends of the motor, the pressure monitoring device and the oil quantity monitoring device respectively, and the I/O interface of the program control device is correspondingly connected with control input ends of the electromagnetic valves respectively.
Compared with the prior art, the utility model has the advantages that:
1. the programmable control device automatically controls the action of the electromagnetic valve according to a program and supplies oil to each lubricating point as required, so that the automation and the intellectualization of lubrication are realized, and the oil supply of the system is stable and reliable;
2. in the lubricating process, the programmable control device monitors in real time, if a fault occurs, the fault point and the fault reason can be accurately indicated, the fault processing is fast, and the maintenance is convenient;
3. the lubricating points are intensively controlled one to one, the oil feeding amount is remotely controlled by a program according to actual requirements, the adjusting range is wide, and the oil feeding precision is high;
4. the control point number of the programmable control device can be freely expanded through program adjustment, and the expandability is good and the adaptability is strong;
5. the working environment can be improved, the labor intensity is reduced, the energy consumption is reduced, and the environment is not polluted;
6. because the distributor and corresponding accessories are not adopted, the whole device has simple structure and low maintenance and operation cost, can fundamentally reduce the failure rate of the lubricating system, ensure the normal operation of production, reduce the quantity of spare parts and the maintenance cost, and increase the economic benefit of enterprises.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic diagram of the connection between the I/O interface of the program control device and the external device.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
In fig. 1, a filter 3, a pressure monitoring device 4 and a fuel amount monitoring device 5 are provided at an outlet of an oil path of an oil pump 2 driven by a motor 1, a solenoid valve 7 is provided in an oil supply pipe 6 between an output end of the fuel amount monitoring device and each fuel filling point 8, the solenoid valve is provided corresponding to each fuel filling point 8 in a one-to-one manner, one end of the solenoid valve is connected to the output end of the fuel amount monitoring device, the other end thereof is connected to the corresponding fuel filling point through the oil supply pipe, and a program control device 9 is electrically connected to the motor, the pressure monitoring device, the fuel amount monitoring device and each solenoid valve.
The pressure monitoring device can adopt an electric contact pressure gauge, a pressure sensor, a pressure difference switch or a pressure transmitter.
The oil quantity monitoring device can adopt a plunger type, piston type, worm and gear type or rotary vane type oil supply device.
The electromagnetic valve is a two-position single-way, two-position two-way, two-position three-way or two-position multi-way electromagnetic directional valve.
The program control device can adopt a single chip microcomputer, a single board computer, a PLC programmable control device or a programmable industrial personal computer.
In fig. 2, INPUT ports INPUT 1-4 in an I/O interface of a program control device are respectively and correspondingly connected with signal output ends of an oil pump motor operation control device, a pressure monitoring device and an oil quantity monitoring device; OUTPUT ports OUTPUT 1-N in the I/O interface of the program control device are respectively and correspondingly connected with the control input end of each electromagnetic valve.
The selection of the program control device is related to the oil filling points to be controlled, when the number of controlled points is small (dozens or dozens of points), a common single chip microcomputer, a single board computer or a PLC programmable control device can be selected, and when the number of controlled points is large (reaching hundreds or thousands of points), a programmable industrial personal computer with a large number of I/O ports can be selected or the I/O ports of the program control device can be expanded to meet the requirements.
Because the single chip microcomputer, the PLC programmable control device or the programmable industrial personal computer can be selected from the available products, the system structure, the working process and the specific wiring mode are not described herein.
After the whole lubricating system is installed and debugged, as long as the power supply is switched on, the whole lubricating system runs under the control of the program instruction in the program control device, the oil pump is started, and according to the set sequence, the electromagnetic valves are controlled to be opened and closed circularly according to the set oil filling amount and the set interval time, and oil is filled to the oil filling points in sequence.
When the oil supply pump is abnormal (oil pressure abnormality, voltage abnormality, current abnormality or temperature abnormality) or the oil supply at a certain oil filling point is abnormal (overpressure or other abnormality), the program control device can send out a corresponding alarm signal and display the fault type and place.
The program control device can display the voltage, oil pressure and oil supply quantity to observe whether the voltage, oil pressure and oil supply quantity are normal or not at any time, can read the oil supply quantity of each point and the total oil supply quantity of each point within a period of working time and other data, and can also set additional functions of pressure limiting, overflow, motor protection or oil tank level alarm and the like according to the needs of users.
The utility model discloses in the device, got rid of indispensable distributor among the conventional multiple spot distribution oil supply unit and corresponding annex to reduce maintenance, spare part, the mouth of pipe that consequently brings and leaked a great deal of problem, reduced lubricated pipe-line system's fault rate, improved its operational reliability.
Because the utility model discloses a set up programmable control device and control in concentrated, the oil pump is concentrated and is exported the fuel feeding, correspond one to one with each oil filling point and set up the solenoid valve, structure such as ration fuel feeding, it can carry out the fuel feeding respectively to a plurality of lubricating points simultaneously to have, can adapt to various futilely, rare lubricating oil or lubricating grease, the operating condition of each lubricating point can in time be judged, can improve operational environment, alleviate advantages such as intensity of labour, whole device structure is succinct, manufacturing, maintain, the running cost is cheap, can fundamentally reduce lubricating system's fault rate, guarantee the normal clear of production, increase the economic benefits of enterprise.
The utility model discloses can extensively be used for the lubricated field of relevant equipment transmission part of trades such as metallurgy, rubber, plastics, papermaking, building materials, mine, weaving, forging and pressing, jack-up, electric power, chemical industry.
Claims (8)
1. The utility model provides a computer programme-controlled lubricating arrangement, includes by motor drive's oil pump and connects the oil feed line between oil pump and each oiling point, characterized by:
a filter, a pressure monitoring device and an oil quantity monitoring device are arranged at an oil path outlet of the oil pump;
an electromagnetic valve is arranged on an oil supply pipe between the output end of the oil quantity monitoring device and each oil filling point;
setting a program control device;
wherein,
the electromagnetic valves are correspondingly arranged with each oil filling point in a one-to-one way;
one end of the electromagnetic valve is connected with the output end of the oil quantity monitoring device, and the other end of the electromagnetic valve is connected with a corresponding oil filling point through an oil supply pipe; the program control device is electrically connected with the motor, the pressure monitoring device, the oil quantity monitoring device and each electromagnetic valve.
2. The computer program controlled lubricating apparatus of claim 1, wherein the pressure monitoring device is an electro-contact pressure gauge, a pressure sensor, a differential pressure switch or a pressure transducer.
3. The computer program controlled lubricating apparatus according to claim 1, wherein the oil amount monitoring device is a plunger, piston, worm or vane type oil supply.
4. The computer program controlled lubricating apparatus of claim 1, wherein the solenoid valve is a solenoid directional valve.
5. The computer program-controlled lubricating device according to claim 1, wherein the solenoid valve is a two-position single-pass, two-position two-pass, two-position three-pass or two-position multi-pass solenoid valve.
6. The computer program-controlled lubricating apparatus according to claim 1, wherein the program control device is a single chip microcomputer, a single board computer, a PLC programmable control device or a programmable industrial control computer.
7. The computer program-controlled lubricating apparatus according to claim 1, wherein the I/O interface of the program control device is connected to the signal output terminals of the motor, the pressure monitoring device, and the oil quantity monitoring device, respectively.
8. The computer program controlled lubricating apparatus of claim 1, wherein the I/O interface of the program control device is connected to the control input of each solenoid valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200420052179 CN2777337Y (en) | 2004-07-08 | 2004-07-08 | Computer programme-controlled lubricating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200420052179 CN2777337Y (en) | 2004-07-08 | 2004-07-08 | Computer programme-controlled lubricating device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2777337Y true CN2777337Y (en) | 2006-05-03 |
Family
ID=36744721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200420052179 Expired - Fee Related CN2777337Y (en) | 2004-07-08 | 2004-07-08 | Computer programme-controlled lubricating device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2777337Y (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101987478A (en) * | 2009-08-05 | 2011-03-23 | 宿迁市固丰管桩有限公司 | Automatic oil-feed lubricating device of centrifugal unit for steel cylinder concrete product molding |
CN102168800A (en) * | 2010-02-25 | 2011-08-31 | 北京中冶华润科技发展有限公司 | Dual-point oil supply oil feeder and oil feeder integration |
CN102734131A (en) * | 2011-04-11 | 2012-10-17 | 天津市七星精密机械有限公司 | Full-automatic oil injection system of high-pressure compressor |
CN102837439A (en) * | 2012-08-31 | 2012-12-26 | 山东福航新能源环保科技有限公司 | Stamping-type molding stick-making machine |
CN102878411A (en) * | 2012-10-26 | 2013-01-16 | 江苏智源科技创业园有限公司 | Plate type oil feeder |
CN102913733A (en) * | 2012-10-30 | 2013-02-06 | 陈亚 | Lubricating oil injection system used for engineering machinery |
CN103080628A (en) * | 2010-04-01 | 2013-05-01 | Skf公司 | Advanced lubrication system |
CN104235584A (en) * | 2014-08-29 | 2014-12-24 | 浙江德清莱恩斯涂装设备有限公司 | Automatic refueling device for chains |
CN105485508A (en) * | 2016-01-18 | 2016-04-13 | 西安瑞信铁路设备有限公司 | Automatic lubricating system for railway turnout |
CN105937700A (en) * | 2016-06-30 | 2016-09-14 | 金龙联合汽车工业(苏州)有限公司 | Centralization lubrication integrated control method |
CN107420726A (en) * | 2017-06-13 | 2017-12-01 | 皇氏集团股份有限公司 | A kind of intelligent automatic fuelling device |
CN107520252A (en) * | 2017-07-10 | 2017-12-29 | 首钢京唐钢铁联合有限责任公司 | Method and device for monitoring oil supply amount of electromagnetic oil supply system |
CN111076072A (en) * | 2019-12-30 | 2020-04-28 | 中国船舶重工集团公司第七一一研究所 | Oil-filling lubricating device between diesel engine air valve and valve seat |
-
2004
- 2004-07-08 CN CN 200420052179 patent/CN2777337Y/en not_active Expired - Fee Related
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101987478A (en) * | 2009-08-05 | 2011-03-23 | 宿迁市固丰管桩有限公司 | Automatic oil-feed lubricating device of centrifugal unit for steel cylinder concrete product molding |
CN102168800A (en) * | 2010-02-25 | 2011-08-31 | 北京中冶华润科技发展有限公司 | Dual-point oil supply oil feeder and oil feeder integration |
CN102168800B (en) * | 2010-02-25 | 2013-12-18 | 北京中冶华润科技发展有限公司 | Dual-point oil supply oil feeder and oil feeder integration |
CN103080628A (en) * | 2010-04-01 | 2013-05-01 | Skf公司 | Advanced lubrication system |
CN103080628B (en) * | 2010-04-01 | 2016-03-30 | Skf公司 | The lubrication system improved |
CN102734131A (en) * | 2011-04-11 | 2012-10-17 | 天津市七星精密机械有限公司 | Full-automatic oil injection system of high-pressure compressor |
CN102837439B (en) * | 2012-08-31 | 2016-03-30 | 山东福航新能源环保科技有限公司 | The shaping bar-producing machine of punching type |
CN102837439A (en) * | 2012-08-31 | 2012-12-26 | 山东福航新能源环保科技有限公司 | Stamping-type molding stick-making machine |
CN102878411A (en) * | 2012-10-26 | 2013-01-16 | 江苏智源科技创业园有限公司 | Plate type oil feeder |
CN102913733A (en) * | 2012-10-30 | 2013-02-06 | 陈亚 | Lubricating oil injection system used for engineering machinery |
CN102913733B (en) * | 2012-10-30 | 2015-08-12 | 浙江赛安电气科技有限公司 | Engineering machinery lubricant oil injecting systems |
CN104235584A (en) * | 2014-08-29 | 2014-12-24 | 浙江德清莱恩斯涂装设备有限公司 | Automatic refueling device for chains |
CN105485508A (en) * | 2016-01-18 | 2016-04-13 | 西安瑞信铁路设备有限公司 | Automatic lubricating system for railway turnout |
CN105937700A (en) * | 2016-06-30 | 2016-09-14 | 金龙联合汽车工业(苏州)有限公司 | Centralization lubrication integrated control method |
CN107420726A (en) * | 2017-06-13 | 2017-12-01 | 皇氏集团股份有限公司 | A kind of intelligent automatic fuelling device |
CN107520252A (en) * | 2017-07-10 | 2017-12-29 | 首钢京唐钢铁联合有限责任公司 | Method and device for monitoring oil supply amount of electromagnetic oil supply system |
CN111076072A (en) * | 2019-12-30 | 2020-04-28 | 中国船舶重工集团公司第七一一研究所 | Oil-filling lubricating device between diesel engine air valve and valve seat |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN2777337Y (en) | Computer programme-controlled lubricating device | |
CN101761772B (en) | Compressed liquefied gas charging system | |
US10626513B1 (en) | Water electrolysis hydrogen production plant with a pumpless water supply system and process flow method | |
CN2806953Y (en) | Grease lubricating device with digital centralized control system | |
CN202833367U (en) | Mortar pump hydraulic system and mortar pump | |
CN2725598Y (en) | High performance electrohydraulic servo controller | |
CN102352952A (en) | Intelligent multi-point centralized lubricating system with pipeline leak detection function | |
CN101303038B (en) | Intelligent air discharge system for hydraulic system pump front low-pressure end | |
CN116498875A (en) | Intelligent multipoint oiling method and system | |
CN203324769U (en) | Petroleum exploitation intelligent control system | |
CN216976464U (en) | Centralized lubrication intelligent control system | |
CN216046800U (en) | Intelligent grease distributor | |
CN202836939U (en) | Pressure-regulating valve pressure detection apparatus | |
CN214535615U (en) | Integrated electric pump station | |
CN212901557U (en) | Control device of scraper slag conveyor | |
CN210856361U (en) | Crust breaking and blanking device | |
CN202252771U (en) | Intelligent multi-point concentrated lubricating system with leakage detection function of pipeline | |
CN203305942U (en) | Vehicle chassis centralized lubrication device | |
CN102854899A (en) | Water tower water level monitoring system | |
CN107521746A (en) | A kind of bar bundling machine control system based on Profibus-DP | |
CN2152614Y (en) | Automatic sorting machine with spring | |
CN112173743A (en) | Automatic ore feeding device of magnetic separator and automatic ore feeding control method | |
CN202076666U (en) | Pneumatic electromagnetic valve for controlling wire burying machine to act | |
CN203305941U (en) | Vehicle chassis centralized lubrication device with progressive distributor | |
CN2839796Y (en) | Ultrasonic fog lubricating device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |