CN105485504A - Distributed automatic equal-distance lubrication system and method applicable to multiple pulley blocks - Google Patents
Distributed automatic equal-distance lubrication system and method applicable to multiple pulley blocks Download PDFInfo
- Publication number
- CN105485504A CN105485504A CN201610045658.3A CN201610045658A CN105485504A CN 105485504 A CN105485504 A CN 105485504A CN 201610045658 A CN201610045658 A CN 201610045658A CN 105485504 A CN105485504 A CN 105485504A
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- China
- Prior art keywords
- lubrication
- lubricating
- main line
- laddering
- double
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
- F16N7/40—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems in a closed circulation system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/14—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the lubricant being conveyed from the reservoir by mechanical means
- F16N7/26—Splash lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
- F16N2021/005—Modular units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
- F16N2039/065—Arrangements for conditioning of lubricants in the lubricating system by filtration inlet foot filter
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
A distributed automatic equal-distance lubrication system applicable to multiple pulley blocks comprises a power-driven fixed pump station, main lubrication pipelines, branch lubrication pipelines, increment type two-line distributors and lubrication nozzles, wherein the power-driven fixed pump station is connected with the main lubrication pipelines, a grease filter is arranged on each main lubrication pipeline, a lubrication system program controller is mounted on the power-driven fixed pump station, each main lubrication pipeline is connected with the corresponding increment type two-line distributor which is connected with the corresponding branch lubrication pipeline, and the branch lubrication pipelines are connected with the lubrication nozzles. The distributed automatic equal-distance lubrication system and method applicable to the multiple pulley blocks solve the problems of surface damage, failure and the like of rolling bearings of the pulley blocks due to non-ideal lubrication during lifting and dropping of a ship lift.
Description
Technical field
A kind of distributed automatic equidistant lubrication system and method that can be used for many sheave block of the present invention, relates generally to ship lift distributed bearing maintenance technical field.
Background technique
Rolling bearing is able to extensive use with advantages such as its starting torque are little, easy for installation, composite structure is simple in industrial and mining enterprise.Along with dynamic power machine is to the development of speed up and maximization, the bearing capacity of bearing, service condition are had higher requirement.Improve bearing capacity, the transmission efficiency of bearing and have number of ways working life, wherein reasonable lubrication is one of key measure.Surface failure and the inefficacy of rolling bearing are closely bound up with lubrication effect, and practice shows, if when can form true lubrication during rolling bearing stand under load, contact fatigue life at least can double.Therefore in the routine work of rolling bearing, all to consume every day and need supplementary a certain amount of dry oil lubrication grease, so can supplement according to actual consumption situation the core that corresponding lubricant grease becomes rolling bearing lubrication maintenance in time.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of distributed automatic equidistant lubrication system and the method that can be used for many sheave block, when solving ship lift lifting, owing to lubricating not in place and problems such as the surface failure of sheave block rolling bearing that causes and inefficacy.
For solving the problem, the technical solution adopted in the present invention is:
Can be used for the distributed automatic equidistant lubrication system of many sheave block, comprise electronic fixed pumping plant, lubrication main line, lubrication branch pipeline, laddering Double-wire distributor, lubricating nozzle, electronic fixed pumping plant connects lubrication main line, lubrication main line is provided with filter fat device, electronic fixed pumping plant is provided with lubrication system program controller, lubrication main line connects laddering Double-wire distributor, and laddering Double-wire distributor connects lubrication branch pipeline, and lubrication branch pipeline connects lubricating nozzle.
Lubricating pipe is arranged symmetrically with, and lubrication main line is equal to the distance of laddering Double-wire distributor; The lubrication branch pipeline that laddering Double-wire distributor connects is equal to the distance of lubricating nozzle on landing group seat.
Described lubrication main line is all equidistant to the lubricating point of many each rolling bearings of sheave block.
The lubricating point of each rolling bearing is provided with pipe joint, and pipe joint is with lubricating nozzle.
Described electronic fixed pumping plant comprises electronic lubricating pump, heater, mixing pump, oil drum, and electronic lubricating pump connects lubrication system program controller, is provided with mixing pump, is provided with heater below oil drum in oil drum.
Described lubrication main line, lubrication branch pipeline are stainless steel pipeline.
A kind of distributed automatic equidistant lubrication system for many sheave block of the present invention and method, technique effect is as follows:
1), owing to adding filter fat device on lubrication main line, solve because grease lines is usually longer, the pressure of required greasing is also relatively large, make the oil sealing on close together bearing often because pressure is excessive and damaged, cause close together bearing to lubricate and grease waste and the undesirable condition of befouling environment.
2), solve generally due to electric lubricating pump station from each lubricating point distance not etc., easily form bearing stuffing that is excessive apart near bearing stuffing, distance not enough, the thus problem of the stuffing amount inequality of the lubricating point of each rolling bearing.
3), solve because distance electric lubricating pump station is comparatively far away, make the travel time of grease in pipeline longer, causing the oil quality of distant lubricating point to decline affects the undesirable condition of lubrication.
4), continual and steady self oiling is realized, after programming controller is set, electronic lubricating pump can be made to run under automatic operation mode, after the interval time of setting, electronic lubricating pump starts lubrication automatically, automatically stops after lubrication, again after the interval time of setting, electronic lubricating pump starts lubrication again automatically, so goes round and begins again, automatic operation.
5), at low temperature season, when lubricating grease viscosity is excessive, heater, slosh pump can be started, fat to be lubricated rare thick after fuel feeding again.
Accompanying drawing explanation
Fig. 1 is automatic equidistant lubricating method schematic diagram of the present invention;
Fig. 2 is rough package drawing of the present invention;
Fig. 3 is lubricating utensil layout plan (plan view) of the present invention;
Fig. 4 is lubricating utensil layout plan (side view) of the present invention;
Fig. 5 is electronic lubricating pump structural representation of the present invention;
Fig. 6 is filter fat device structural representation of the present invention;
Fig. 7 is laddering Double-wire distributor structural representation of the present invention.
Wherein: the electronic fixed pumping plant of 1-, 2-lubricates main line, and 3-filters fat device, and 4-lubricates branch pipeline, the laddering Double-wire distributor of 5-, 6-lubricating nozzle, 7-sheave block 8-sheave block concrete bearing;
1001-electronic lubricating pump, 1002-hydraulicchange-over valve, 1003-heater, 1004-mixing pump, 1005-oil drum, 1006-lubrication system program controller.
Embodiment
As shown in Fig. 1 ~ Fig. 7, can be used for the distributed automatic equidistant lubrication system of many sheave block, comprise electronic fixed pumping plant 1, lubrication main line 2, lubrication branch pipeline 4, laddering Double-wire distributor 5, lubricating nozzle 6.
Electronic fixed pumping plant 1 connects lubrication main line 2, lubrication main line 2 is provided with filter fat device 3, electronic fixed pumping plant 1 is provided with lubrication system program controller 1006, lubrication main line 2 connects laddering Double-wire distributor 5, laddering Double-wire distributor 5 connects lubrication branch pipeline 4, and lubrication branch pipeline 4 connects lubricating nozzle 6.
Lubricating pipe is arranged symmetrically with, because ship lift lifting requires that load should evenly be issued, therefore sheave block is equidistant being arranged symmetrically with under normal circumstances, therefore for guaranteeing that lubricating grease is equidistant to each sheave block rolling bearing, the path of lubricating pipe should be planned from lubricating nozzle before installation, until electronic fixed pumping plant 1, thus guarantee that lubricating pipe is arranged symmetrically with.Lubrication main line 2 is equal to the distance of laddering Double-wire distributor 5; The lubrication branch pipeline 4 that laddering Double-wire distributor 5 connects is equal to the distance of lubricating nozzle 6 on landing group seat.
Described lubrication main line 2 is all equidistant to the lubricating point of many each rolling bearings of sheave block.
The lubricating point of each rolling bearing is provided with pipe joint, and pipe joint is with lubricating nozzle 6.
Described electronic fixed pumping plant 1 comprises electronic lubricating pump 1001, heater 1003, mixing pump 1004, oil drum 1005, electronic lubricating pump 1001 connects lubrication system program controller 1006, mixing pump 1004 is installed in oil drum 1005, below oil drum 1005, is provided with heater 1003.
Described lubrication main line 2, lubrication branch pipeline 4 are stainless steel pipeline.
Can be used for the distributed automatic equidistant lubricating method of many sheave block, comprise the following steps:
The first step: electronic fixed pumping plant 1, lubrication main line 2, filter fat device 3, lubrication branch pipeline 4, laddering Double-wire distributor 5, lubricating nozzle 6 are arranged on mattess and landing group seat; Lubrication system program controller 1006 is arranged on electronic fixed pumping plant 1;
Second step: should be arranged symmetrically with when lubricating pipe is arranged, make lubrication main line 2 equal to the distance of laddering Double-wire distributor 5, the lubrication branch pipeline 4 that laddering Double-wire distributor 5 connects is equal to the distance of lubricating nozzle 6 on landing group seat;
3rd step: the work times of length interval time of adjustment lubrication system program controller 1006, system every day;
4th step: according to the viscosity situation of lubricating grease, starts the heater 1003 in electronic fixed Lubricating pump station 1, slosh pump 1004;
5th step: initiating switchup electronic lubricating pump 1001, disconnects lubrication branch pipeline 4, and whether observation lubrication branch pipeline 4 is fuel-displaced;
6th step: start lubrication system program controller 1006, carries out order lubrication to each rolling bearing lubrication point of many sheave block automatically.
A kind of distributed automatic equidistant lubrication system for many sheave block of the present invention and method, realize continual and steady self oiling, after being set by lubrication system program controller 1006, electronic lubricating pump 1001 can be made to run under automatic operation mode, after the interval time of setting, electronic lubricating pump 1001 starts lubrication automatically, automatically stop after lubrication, then after the interval time of setting, electronic lubricating pump 1001 starts lubrication again automatically, so go round and begin again, automatic operation.Solve generally due to electronic fixed pumping plant 1 from each lubricating point distance not etc., easily form the situation of the bearing stuffing deficiency of, distance excessive apart near bearing stuffing, the thus problem of the stuffing amount inequality of each lubricating point.
Owing to adding filter fat device 3 on lubrication main line 2, solve because grease lines is usually longer, the pressure of required greasing is also relatively large, make the oil sealing on close together bearing often because pressure is excessive and damaged, cause close together bearing to lubricate and grease waste and the undesirable condition of befouling environment.Solve because distance is comparatively far away due to electric lubricating pump station 1, make the travel time of grease in pipeline longer, causing the oil quality of distant lubricating point to decline affects the undesirable condition of lubrication.
At low temperature season, when lubricating grease viscosity is excessive, heater 1003, slosh pump 1004 can be started, fat to be lubricated rare thick after fuel feeding again.The invention solves the problems such as surface failure and inefficacy of ship lift sheave block rolling bearing, contact fatigue life can be made at least can to double.
Claims (7)
1. can be used for the distributed automatic equidistant lubrication system of many sheave block, comprise electronic fixed pumping plant (1), lubrication main line (2), lubrication branch pipeline (4), laddering Double-wire distributor (5), lubricating nozzle (6), it is characterized in that, electronic fixed pumping plant (1) connects lubrication main line (2), lubrication main line (2) is provided with filter fat device (3), electronic fixed pumping plant (1) is provided with lubrication system program controller (1006), lubrication main line (2) connects laddering Double-wire distributor (5), laddering Double-wire distributor (5) connects lubrication branch pipeline (4), lubrication branch pipeline (4) connects lubricating nozzle (6).
2. can be used for the distributed automatic equidistant lubrication system of many sheave block according to claim 1, it is characterized in that, lubricating pipe is arranged symmetrically with, and lubrication main line (2) is equal to the distance of laddering Double-wire distributor (5); In the lubrication branch pipeline (4) that laddering Double-wire distributor (5) connects to landing group seat, the distance of lubricating nozzle (6) is equal.
3. can be used for the distributed automatic equidistant lubrication system of many sheave block according to claim 1, it is characterized in that, described lubrication main line (2) is all equidistant to the lubricating point of many each rolling bearings of sheave block.
4. can be used for the distributed automatic equidistant lubrication system of many sheave block according to claim 3, it is characterized in that, the lubricating point of each rolling bearing is provided with pipe joint, and pipe joint is with lubricating nozzle (6).
5. can be used for the distributed automatic equidistant lubrication system of many sheave block according to claim 1, it is characterized in that, described electronic fixed pumping plant (1) comprises electronic lubricating pump (1001), heater (1003), mixing pump (1004), oil drum (1005), electronic lubricating pump (1001) connects lubrication system program controller (1006), be provided with mixing pump (1004) in oil drum (1005), oil drum (1005) below is provided with heater (1003).
6. can be used for the distributed automatic equidistant lubrication system of many sheave block according to claim 1, it is characterized in that, described lubrication main line (2), lubrication branch pipeline (4) are stainless steel pipeline.
7. can be used for the distributed automatic equidistant lubricating method of many sheave block, it is characterized in that comprising the following steps:
The first step: electronic fixed pumping plant (1), lubrication main line (2), filter fat device (3), lubrication branch pipeline (4), laddering Double-wire distributor (5), lubricating nozzle (6) are arranged on mattess and landing group seat; Lubrication system program controller (1006) is arranged on electronic fixed pumping plant (1);
Second step: should be arranged symmetrically with when lubricating pipe is arranged, make lubrication main line (2) equal to the distance of laddering Double-wire distributor (5), in the lubrication branch pipeline (4) that laddering Double-wire distributor (5) connects to landing group seat, the distance of lubricating nozzle (6) is equal;
3rd step: length interval time of adjustment lubrication system program controller (1006), the work times of system every day;
4th step: according to the viscosity situation of lubricating grease, starts the heater (1003) in electronic fixed Lubricating pump station (1), slosh pump (1004);
5th step: initiating switchup electronic lubricating pump (1001), disconnects lubrication branch pipeline (4), and whether observation lubrication branch pipeline (4) is fuel-displaced;
6th step: start lubrication system program controller (1006), carries out order lubrication to each rolling bearing lubrication point of many sheave block automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610045658.3A CN105485504A (en) | 2016-01-25 | 2016-01-25 | Distributed automatic equal-distance lubrication system and method applicable to multiple pulley blocks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610045658.3A CN105485504A (en) | 2016-01-25 | 2016-01-25 | Distributed automatic equal-distance lubrication system and method applicable to multiple pulley blocks |
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|---|---|
| CN105485504A true CN105485504A (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610045658.3A Pending CN105485504A (en) | 2016-01-25 | 2016-01-25 | Distributed automatic equal-distance lubrication system and method applicable to multiple pulley blocks |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393067A (en) * | 2016-10-31 | 2017-02-15 | 苏州立源信智能科技有限公司 | Automatically-lubricating truss robot |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201982937U (en) * | 2011-04-14 | 2011-09-21 | 西安煤矿机械有限公司 | Centralized lubricating system of coal mining machine |
| CN102494236A (en) * | 2011-11-30 | 2012-06-13 | 烟台华顺机械工程设备有限公司 | Electric control system for oil-gas lubrication |
| CN202580564U (en) * | 2012-03-14 | 2012-12-05 | 安徽海森科技集团有限公司 | Manual centralized lubricating system for automatic nail making machine |
| CN202992592U (en) * | 2012-12-17 | 2013-06-12 | 南京贝奇尔机械有限公司 | Centralized lubricating system for engraving machine |
| CN103343869A (en) * | 2013-07-22 | 2013-10-09 | 上海大众汽车有限公司 | Automatic monitoring system of refueling station |
| CN103712045A (en) * | 2012-09-28 | 2014-04-09 | 林肯工业公司 | Variable speed stepper motor driving a lubrication pump system |
| CN204300659U (en) * | 2014-12-05 | 2015-04-29 | 南京贝奇尔机械有限公司 | A kind of two line lubrication system |
| CN204534076U (en) * | 2015-02-12 | 2015-08-05 | 北京机电研究所 | Laddering centralized lubrication system |
| CN205316013U (en) * | 2016-01-25 | 2016-06-15 | 中国葛洲坝集团三峡建设工程有限公司 | Distributed automatic equidistance lubricating system who can be used to many assembly pulleys |
-
2016
- 2016-01-25 CN CN201610045658.3A patent/CN105485504A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201982937U (en) * | 2011-04-14 | 2011-09-21 | 西安煤矿机械有限公司 | Centralized lubricating system of coal mining machine |
| CN102494236A (en) * | 2011-11-30 | 2012-06-13 | 烟台华顺机械工程设备有限公司 | Electric control system for oil-gas lubrication |
| CN202580564U (en) * | 2012-03-14 | 2012-12-05 | 安徽海森科技集团有限公司 | Manual centralized lubricating system for automatic nail making machine |
| CN103712045A (en) * | 2012-09-28 | 2014-04-09 | 林肯工业公司 | Variable speed stepper motor driving a lubrication pump system |
| CN202992592U (en) * | 2012-12-17 | 2013-06-12 | 南京贝奇尔机械有限公司 | Centralized lubricating system for engraving machine |
| CN103343869A (en) * | 2013-07-22 | 2013-10-09 | 上海大众汽车有限公司 | Automatic monitoring system of refueling station |
| CN204300659U (en) * | 2014-12-05 | 2015-04-29 | 南京贝奇尔机械有限公司 | A kind of two line lubrication system |
| CN204534076U (en) * | 2015-02-12 | 2015-08-05 | 北京机电研究所 | Laddering centralized lubrication system |
| CN205316013U (en) * | 2016-01-25 | 2016-06-15 | 中国葛洲坝集团三峡建设工程有限公司 | Distributed automatic equidistance lubricating system who can be used to many assembly pulleys |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393067A (en) * | 2016-10-31 | 2017-02-15 | 苏州立源信智能科技有限公司 | Automatically-lubricating truss robot |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160413 |