CN115823468B - Automatic bearing lubricating device - Google Patents
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Abstract
The invention relates to the technical field of bearing lubrication, and provides an automatic bearing lubrication device which solves the problems of low production efficiency, small effective filling amount, sometimes high-altitude operation and the like when grease is filled in manual lubrication; the full-closed lubrication system is composed of an automatic oil pump station assembly, a high-pressure resin oil pipe, an oiling progressive distributor and pipeline accessories, wherein the progressive distributor respectively sends grease to each lubrication point according to the grease required quantity of each lubrication point so as to ensure accurate and sufficient lubrication of each point.
Description
Technical Field
The invention relates to the technical field of bearing lubrication, and provides an automatic bearing lubrication device.
Background
The outdoor common automatic lubrication maintenance system is mainly used for large-scale mechanical equipment, has certain requirements on grease and use environment, is started earlier, drives grease to be filled at fixed points through manual or high-pressure pumps, but the effective injection amount, injection frequency, blockage, leakage and other problems frequently occur, so that the popularization of the automatic bearing lubrication system of the pumping unit is restricted, and the bearing lubrication of the pumping unit is mainly divided into two main types at present: manual lubrication and automatic lubrication; manual lubrication refers to a lubrication mode of manually using a grease gun or a small booster pump to supply oil to a bearing part of an oil pumping unit point by point, and most of the current oil pumping unit bearing lubrication adopts the method, however, the defects of the manual lubrication are as follows: the machine is required to stop filling, the effective filling amount is small, the problem of high-altitude operation safety exists, the working is extremely inconvenient, and the equipment and the environment are polluted; aiming at the technical problems, the application provides a solution.
Disclosure of Invention
The invention discloses an automatic bearing lubricating device, which is a full-closed lubricating system consisting of an automatic oil pump station assembly outputting oil pressure of 10-15MPa, a high-pressure resin oil pipe, four independent adjustable quantitative oil injection progressive distributors and pipeline accessories, wherein high-pressure lubricating grease is supplied to the progressive distributors through a main pipeline by an automatic lubricating pump, the progressive distributors respectively send the grease to each lubricating point according to the required grease amount of each lubricating point so as to ensure accurate and sufficient lubrication of each point.
The aim of the invention can be achieved by the following technical scheme: the bearing automatic lubrication device is suitable for the oil pumping unit and comprises a pump station shell, the outer wall of the pump station shell is rotationally connected with a pump station box door, a support is fixedly arranged in the pump station shell, an automatic lubrication pump is fixedly arranged on the upper surface of the support, and the top end of the automatic lubrication pump is fixedly connected with an oil storage tank; the automatic lubrication pump is characterized in that the side wall of the automatic lubrication pump is communicated to the outside of the pump station shell through a pipeline, a progressive distributor is fixedly connected to the outside of the pump station shell, an oil inlet of the progressive distributor is connected with the pipeline extending out of the pump station shell, multiple groups of oil outlets on the outer wall of the progressive distributor are fixedly connected with oil pipelines, the oil pipelines are fixedly connected to the outer side of the shaft seal shell, the oil pipelines are communicated to the inside of the shaft seal shell, the shaft seal shell is distributed on one side of a central bearing of the pumping unit, one side of a tail seat bearing of the pumping unit and two sides of a connecting rod seat bearing of the pumping unit, the pump station shell is fixedly mounted at the bottom of the pumping unit, and the progressive distributor is fixedly mounted below the central bearing of the pumping unit.
As a preferred implementation mode of the invention, the inner wall of the pump station door is fixedly provided with a control assembly which is in communication connection with the oil storage tank, and the control assembly internally comprises a control module.
As a preferred embodiment of the present invention, the control module includes a central control platform, a pressure monitoring unit, a fault checking unit, an external communication unit and a consumable management unit, wherein the central control platform is in communication connection with the above units; the pressure monitoring unit is used for detecting the liquid pressure in the automatic lubrication pump, the oil outlet and the oil conveying pipeline, comparing and analyzing the pressure in the automatic lubrication pump, the oil outlet and the oil conveying pipeline with a preset pressure threshold value, judging whether the pressure in the automatic lubrication pump, the oil outlet and the oil conveying pipeline meets the normal working requirement according to an analysis result, generating a corresponding normal pressure signal or an abnormal pressure signal, and sending the normal pressure signal or the abnormal pressure signal to the central control platform; the fault checking unit is used for acquiring a pressure abnormal signal from the central control platform, generating checking detection signals after acquiring the pressure abnormal signal, controlling the progressive distributor to sequentially pump oil to the plurality of oil outlets, collecting the pressure and the oil output in the oil outlets in real time during oil pumping, analyzing the pressure and the oil output by the fault checking unit, generating a fault position signal, and transmitting the fault position signal to the central control platform; the consumable management unit is used for detecting the residual service time of consumable in the pump station shell, wherein the consumable is divided into oil quantity and pipe fittings, the residual available time of the oil quantity in the oil storage tank and the residual service life of the pipe fittings are calculated, and the consumable management unit generally plans a replacement route according to the residual service time of the consumable of the plurality of oil pumping units and sends the replacement route, the residual available time of the oil quantity and the residual service life of the pipe fittings to the central control unit; the external communication unit is used for sending the alternative route, the oil quantity remaining available time, the pipe remaining service life and the fault position signals in the central control unit to the manager equipment, and working according to the alternative route after confirmation by the manager.
As a preferred embodiment of the present invention, the troubleshooting unit analyzes the following: the fault elimination unit sequentially pressurizes and pumps the oil to the plurality of oil outlets, acquires real-time pressure and oil output in the oil outlets, and detects that the plurality of oil outlets are oilingThe pressure change data and the oil output data are made, the pressure change data of each oil outlet when the oil injection action is carried out are drawn into a time-pressure line diagram, wherein the abscissa is time t, the ordinate is pressure a, the pressure change line diagram of each oil outlet when the oil injection action is carried out is compared with the pressure change line diagram of the oil outlet when the oil injection action is carried out under the preset normal working condition, the abscissa of the pressure change line diagram under the normal working condition is time t, the ordinate is pressure A, and the pressure difference value corresponding to the time point ti is calculated
Calculating a curve deviation value X of the pressure change line graph at the oil outlet and the pressure change line graph under normal working conditions through a formula,
and comparing the curve deviation value X with a preset deviation threshold value X0, generating a fault position signal if the curve deviation value X is more than or equal to the deviation threshold value X0, marking an oil outlet corresponding to the curve and an oil pipeline connected with the oil outlet as a fault position, and transmitting the fault position signal and the marked fault position to a central control platform by the fault checking unit.
As a preferred embodiment of the present invention, the consumable management unit obtains the residual oil in the oil storage tank, calculates the number of times the residual oil in the oil storage tank can be pumped according to the oil output pumped by the progressive distributor for each oil injection, and obtains the available time for the residual oil according to the time interval of each butter pumping multiplied by the number of times of pumping; the consumable management unit obtains the time point of replacing the pipe fitting, the obtaining mode is manual input by an administrator, the timing is carried out after the pipe fitting is replaced, and the residual service life of the pipe fitting is obtained through the difference value between the service time of the pipe fitting and the preset service life of the pipe fitting.
As a preferred embodiment of the present invention, the consumable management unit obtains the remaining usage time of consumables of the plurality of pumping units, marks pumping units with consumable usage time less than a preset usage time as pumping units to be maintained, calculates shortest routes from a maintenance site through an exhaustion method and passing through all pumping units one by one, and marks the shortest routes as alternative routes.
Compared with the prior art, the invention has the beneficial effects that: in the invention, grease is injected into the shaft seal shell through the progressive distributor, so that lubrication and maintenance work is performed in the working state of the oil pumping unit, when new grease under pressure enters from the shaft seal shell, the bearing is in a rolling working state, at the moment, the millstone effect is quite obvious, namely, the new grease under pressure can replace dirty grease among all moving surfaces one by one and finally completely and then flows out from the other side, thereby effectively realizing clean and thorough lubrication.
In the invention, the automatic lubrication system is fully sealed, and the automatic lubrication pump is connected into a closed system through the progressive distributor with adjustable injection amount by a pipeline, so that the lubrication work is not affected by any external influence, and the cleaning of the lubrication work can be ensured no matter how severe the external condition is.
According to the invention, through the cooperative processing of the units in the control module, the service lives of the oil storage tank residual oil quantity, the rubber hose and other pipe fittings can be effectively monitored, meanwhile, the function of comprehensively monitoring the bearing automatic lubrication system in operation can be realized, and the system faults can be timely found, so that the frequency of manual inspection is reduced, and the automation level is further improved.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a control assembly of the present invention;
FIG. 3 is a schematic diagram of the installation position of the oil pipeline according to the present invention;
fig. 4 is a system block diagram of the present invention.
In the figure: 1. a pump station housing; 2. an oil storage tank; 3. a shaft seal housing; 4. an oil delivery pipeline; 5. a progressive dispenser; 6. an oil outlet; 7. an automatic lubrication pump; 8. a support; 9. pump station door; 10. a control assembly; 11. a central bearing of the pumping unit; 12. tail seat bearing of pumping unit; 13. and a connecting rod seat bearing of the pumping unit.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the oil pumping unit lubrication system starts earlier, grease fixed-point timing filling is driven by manual work or a high-pressure pump, but the problems of effective injection amount, injection frequency, blockage, leakage and the like frequently occur, so that the popularization of the oil pumping unit automatic bearing lubrication system is restricted, and the oil pumping unit bearing lubrication is mainly divided into two main categories at present: manual lubrication and automatic lubrication, in which manual lubrication has various drawbacks, therefore an automatic lubrication device is required to replace manual lubrication work.
Referring to fig. 1-4, the bearing automatic lubrication device is suitable for an oil pumping unit, and comprises a pump station shell 1, wherein the outer wall of the pump station shell 1 is rotationally connected with a pump station box door 9, a support 8 is fixedly arranged in the pump station shell 1 and used for supporting an automatic lubrication pump 7 from the ground, so that the automatic lubrication pump 7 is waterproof and moistureproof, the upper surface of the support 8 is fixedly provided with the automatic lubrication pump 7, and the top end of the automatic lubrication pump 7 is fixedly connected with an oil storage tank 2; the side wall of the automatic lubrication pump 7 is communicated to the outside of the pump station shell 1 through a pipeline, the progressive distributor 5 is fixedly connected to the outside of the pump station shell 1, for a common volumetric damping quantitative oil injector, the interior of the pump station shell is a rubber sliding friction soft seal, the temperature of an adaptive working environment is not wide, the pump station shell is extremely easy to wear, leakage is extremely easy, the service life is short, the oil injection precision is inaccurate, the progressive distributor 5 can solve the problems, an oil inlet of the progressive distributor 5 is connected with a pipeline extending from the pump station shell 1, a plurality of groups of oil outlets 6 of the outer wall of the progressive distributor 5 are fixedly connected with an oil pipeline 4, the oil pipeline 4 is a rubber hose, the oil pipeline 4 is fixedly connected to the outer side of the shaft seal shell 3, the oil pipeline 4 is communicated to the interior of the shaft seal shell 3, butter is conveyed to the interior of the shaft seal shell 3 through the oil pipeline 4, and pressed into working surface gaps of bearings, the shaft seal shell 3 is distributed on one side of a central bearing 11 of the oil pump, one side of a tail stock bearing 12 and two sides of a connecting rod stock bearing 13 of the oil pump, the bearings at the same time, the bearings at the positions play an automatic lubrication function, the shell 1 is fixedly mounted at the bottom of the oil pump station, a worker or the oil storage personnel is facilitated, the oil storage personnel is controlled to be filled into the oil tank 2, the oil distributor 5 is fixedly connected with the oil pump station shell 10, the oil tank 10 is fixedly connected with the oil tank 10, and the oil tank assembly is controlled to be in the inner pump 10, and the oil tank assembly is controlled.
In this embodiment, the device is a fully-closed constant-pressure timing and quantitative distribution system for grease, and the amount of grease supplied from the outlet of the adjustable quantitative progressive distributor 5 is constant and the pressure is equal. The system power is derived from an automatic lubrication pump 7, after the lubricating grease is pumped out from the pump, the lubricating grease is connected to a progressive distributor 5 through a main pipeline, the progressive distributor 5 supplies oil to each lubrication point according to a set amount, when a sufficient amount of new oil with high pressure enters into a bearing at work, the deteriorated dirty oil can be completely discharged along a shaft seal under the millstone effect, and the lubrication process is finished. The automatic lubrication pump 7 can drive the high-pressure grease with the timing output of 10-15MPa through the timing pulse electric energy, and the progressive distributor 5 outputs quantitative grease according to each stroke design, so that timing, quantitative and fixed-point supply is realized.
Embodiment two:
referring to fig. 1 to 4, the control module includes a central control platform, a pressure monitoring unit, a fault checking unit, an external communication unit and a consumable management unit, wherein the central control platform is in communication connection with the units; the pressure monitoring unit is used for detecting the liquid pressure inside the automatic lubrication pump 7, the oil outlet 6 and the oil delivery pipeline 4 and comparing the pressure inside the automatic lubrication pump 7, the oil outlet 6 and the oil delivery pipeline 4 with a preset pressure threshold valueThe ratio analysis is carried out, because the bearing automatic lubrication device is a constant pressure device, the pressure under normal operation has a constant value, whether the pressures in the automatic lubrication pump 7, the oil outlet 6 and the oil delivery pipeline 4 meet the normal operation requirement can be analyzed according to the difference result by judging the difference between the pressure and the constant value, a corresponding pressure normal signal or a pressure abnormal signal is generated, and the pressure monitoring unit sends the pressure normal signal or the pressure abnormal signal to the central control platform; the fault checking unit is used for acquiring a pressure abnormal signal from the central control platform, generating a checking detection signal after acquiring the pressure abnormal signal and sending the checking detection signal to the central control platform, controlling the pressure monitoring unit to monitor the pressure of the plurality of oil outlets 6 after the central control platform acquires the checking detection signal, controlling the progressive distributor 5 to sequentially pressurize the plurality of oil outlets 6 to pump oil, and collecting the oil outlet quantity in the oil outlets 6 in real time during oil pumping, wherein the fault checking unit analyzes the pressure and the oil outlet quantity, and the analysis process of the fault checking unit is as follows: the fault elimination unit sequentially pressurizes and pumps oil to a plurality of oil outlets 6, acquires real-time pressure and oil outlet quantity in the oil outlets 6, detects pressure change data and oil outlet quantity data of the plurality of oil outlets 6 when the oil injection is carried out, draws the pressure change data of each oil outlet 6 when the oil injection is carried out into a time-pressure line graph, wherein the abscissa is time t, the ordinate is pressure a, compares the pressure change line graph of each oil outlet 6 when the oil injection is carried out with the preset pressure change line graph of the oil outlet 6 when the oil injection is carried out under normal working conditions, the abscissa is time t, the ordinate is pressure A, and calculates a pressure difference value corresponding to the time point ti
Calculating a curve deviation value X of the pressure change line graph at the oil outlet 6 and the pressure change line graph under normal working conditions by a formula, and obtaining the deviation value X +.>
Wherein k is a coefficient, comparing the curve deviation value X with a preset deviation threshold value X0, if the curve deviation value X is more than or equal to the deviationWhen the threshold value X0 is exceeded, generating a fault position signal, marking an oil outlet 6 corresponding to the curve and an oil pipeline 4 connected with the oil outlet 6 as fault positions, transmitting the fault position signal and the marked fault positions to a central control platform by a fault troubleshooting unit, and transmitting the fault position signal and the marked fault positions to checking equipment of an administrator by the central control platform through an external communication unit; the consumable management unit is used for detecting the residual service time of consumable in the pump station shell 1, wherein the consumable is divided into residual oil in the oil storage tank 2 and a pipe fitting of the oil pipeline 4, the consumable management unit obtains the residual oil in the oil storage tank 2, the number of times the residual oil in the oil storage tank 2 can be pumped is calculated according to the oil output of pumping performed by the progressive distributor 5 each time, the time capable of being used for obtaining the residual oil is obtained according to the time interval of pumping butter each time multiplied by the number of times of pumping, the consumable management unit obtains the time point of pipe fitting replacement, the obtaining mode is manual input by an administrator and is timed after pipe fitting replacement, the residual service life of the pipe fitting is obtained through the difference between the service time of the pipe fitting and the service life of the preset pipe fitting, the consumable management unit obtains the residual service time of the plurality of pumping units, the consumable units are marked as pumping units to be maintained, the consumable management unit calculates the shortest route from a maintenance station through an exhaustion method and passes through all pumping units, the shortest route of the pumping units, the shortest route is marked as a replacement route, the working efficiency can be greatly shortened when the worker can walk for the maintenance station, the consumption of the pumping unit can be greatly shortened, the service cost can be saved when the maintenance unit is maintained, and the service life of the residual service unit can be replaced by the service life of the consumable unit is saved, and the service life of the consumable management unit can be used for maintenance unit is saved; the external communication unit is used for sending the alternative route, the oil quantity remaining available time, the pipe remaining service life and the fault position signals in the central control unit to the manager equipment, so that the manager equipment can conveniently check the signals, and the signals are confirmed by the manager and work according to the alternative route.
In the invention, the bearing automatic lubrication device is a full-closed lubrication system consisting of an automatic oil pump station assembly outputting oil pressure of 10-15MPa, a high-pressure resin oil pipe, four independent adjustable quantitative oil injection progressive distributor 5 and pipeline accessories, wherein high-pressure lubricating grease is supplied to the progressive distributor 5 through a main pipeline by an automatic lubrication pump 7, the progressive distributor 5 respectively sends grease to each lubrication point according to the required grease amount of each lubrication point so as to ensure accurate and sufficient lubrication of each point.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (3)
1. The bearing automatic lubrication device is suitable for an oil pumping machine and comprises a pump station shell (1), and is characterized in that the outer wall of the pump station shell (1) is rotationally connected with a pump station box door (9), a support (8) is fixedly arranged in the pump station shell (1), an automatic lubrication pump (7) is fixedly arranged on the upper surface of the support (8), and an oil storage tank (2) is fixedly connected to the top end of the automatic lubrication pump (7); the side wall of the automatic lubrication pump (7) is communicated to the outside of the pump station shell (1) through a pipeline, a progressive distributor (5) is fixedly connected to the outside of the pump station shell (1), an oil inlet of the progressive distributor (5) is connected with the pipeline extending out of the pump station shell (1), multiple groups of oil outlets (6) on the outer wall of the progressive distributor (5) are fixedly connected with oil pipelines (4), the oil pipelines (4) are fixedly connected to the outer side of the shaft seal shell (3), the oil pipelines (4) are communicated to the inside of the shaft seal shell (3), the shaft seal shell (3) is distributed on one side of a central bearing (11) of the pumping unit, one side of a tail stock bearing (12) of the pumping unit and two sides of a connecting rod stock bearing (13) of the pumping unit, the pump station shell (1) is fixedly arranged at the bottom of the pumping unit, and the progressive distributor (5) is fixedly arranged below the central bearing (11) of the pumping unit; the inner wall of the pump station box door (9) is fixedly provided with a control assembly (10), the control assembly (10) is in communication connection with the oil storage tank (2), and a control module is arranged in the control assembly (10); the control module comprises a central control platform, a pressure monitoring unit, a fault checking unit, an external communication unit and a consumable management unit, wherein the central control platform is in communication connection with the units; the pressure monitoring unit is used for detecting the liquid pressure inside the automatic lubrication pump (7), the oil outlet (6) and the oil delivery pipeline (4), comparing and analyzing the pressure inside the automatic lubrication pump (7), the oil outlet (6) and the oil delivery pipeline (4) with a preset pressure threshold value, judging whether the pressure inside the automatic lubrication pump (7), the oil outlet (6) and the oil delivery pipeline (4) meets the normal working requirement according to the analysis result, and generating the pressure comparison resultThe pressure monitoring unit sends the pressure normal signal or the pressure abnormal signal to the central control platform; the fault checking unit is used for acquiring a pressure abnormal signal from the central control platform, generating checking detection signals after acquiring the pressure abnormal signal, controlling the progressive distributor (5) to sequentially pressurize the plurality of oil outlets (6) to pump oil, and collecting the pressure and the oil output in the oil outlets (6) in real time during oil pumping, analyzing the pressure and the oil output by the fault checking unit, generating a fault position signal, and sending the fault position signal to the central control platform; the consumable management unit is used for detecting consumable residual use time in the pump station shell (1), wherein the consumable is divided into oil quantity and pipe fittings, the oil quantity residual use time and the pipe fitting residual use life in the oil storage tank (2) are calculated, and the consumable management unit generally plans a replacement route according to the consumable residual use time of the plurality of pumping units and sends the replacement route, the oil quantity residual use time and the pipe fitting residual use life to the central control unit; the external communication unit is used for sending the alternative route, the oil quantity remaining available time, the pipe remaining service life and the fault position signals in the central control unit to the manager equipment, and working according to the alternative route after confirmation by the manager; the analysis process of the fault checking unit is as follows: the fault checking unit sequentially pressurizes and pumps oil for a plurality of oil outlets (6), acquires real-time pressure and oil output in the oil outlets (6), detects pressure change data and oil output data of the plurality of oil outlets (6) when the oil injection action is carried out, draws the pressure change data of each oil outlet (6) when the oil injection action is carried out into a pressure change line graph, wherein the abscissa is time t, the ordinate is pressure a, compares the pressure change line graph of each oil outlet (6) when the oil injection action is carried out with the preset pressure change line graph of the oil outlet (6) under normal working conditions, the abscissa is time t, the ordinate is pressure A, and calculates a pressure difference value corresponding to the time point ti
Calculating a curve deviation value X and a +.A curve deviation value X of a pressure change line graph at the oil outlet (6) and a pressure change line graph under normal working conditions through a formula>
And (3) comparing the curve deviation value X with a preset deviation threshold value X0, if the curve deviation value X is more than or equal to the deviation threshold value X0, generating a fault position signal, marking an oil outlet (6) corresponding to the curve and an oil pipeline (4) connected with the oil outlet (6) as a fault position, and sending the fault position signal and the marked fault position to a central control platform by the fault checking unit. />
2. The automatic bearing lubrication device according to claim 1, wherein the consumable management unit obtains the residual oil amount in the oil storage tank (2), calculates the number of times the residual oil amount in the oil storage tank (2) can be pumped according to the oil amount pumped by the progressive distributor (5) for each oil injection, and obtains the residual oil amount available time according to the time interval of each butter pumping multiplied by the number of times of pumping; the consumable management unit obtains the time point of replacing the pipe fitting, the obtaining mode is manual input by an administrator, the timing is carried out after the pipe fitting is replaced, and the residual service life of the pipe fitting is obtained through the difference value between the service time of the pipe fitting and the preset service life of the pipe fitting.
3. The automatic bearing lubrication device according to claim 2, wherein the consumable management unit obtains consumable remaining use time of the plurality of pumping units, marks pumping units with consumable use time smaller than preset use time as pumping units to be maintained, calculates shortest routes from maintenance sites through an exhaustion method, and passes through all pumping units one by one, and marks the shortest routes as alternative routes.
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| JP2004230616A (en) * | 2003-01-29 | 2004-08-19 | Fanuc Ltd | Injection molding machine |
| JP2005042754A (en) * | 2003-07-23 | 2005-02-17 | Jfe Steel Kk | Monitoring method of fat and oil supply condition of lubricant |
| CN102679119B (en) * | 2012-05-25 | 2014-10-29 | 南京贝奇尔机械有限公司 | Balanced beam-pumping unit centralized lubricating system |
| CN207729219U (en) * | 2018-01-18 | 2018-08-14 | 东营市惠好科技开发有限责任公司 | Pumping unit for oil field centralized lubrication device |
| CN110610281B (en) * | 2019-11-18 | 2020-04-07 | 江苏中苏智能制造有限公司 | Intelligent pump station management platform |
| CN216556410U (en) * | 2021-11-25 | 2022-05-17 | 郑州奥特科技有限公司 | Centralized lubricating system |
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