CN113753531B - Centralized automatic lubricating device for coal mine belt conveyor - Google Patents
Centralized automatic lubricating device for coal mine belt conveyor Download PDFInfo
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- CN113753531B CN113753531B CN202110959468.3A CN202110959468A CN113753531B CN 113753531 B CN113753531 B CN 113753531B CN 202110959468 A CN202110959468 A CN 202110959468A CN 113753531 B CN113753531 B CN 113753531B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/02—Lubricating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
- B65G2203/0291—Speed of the load carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
- B65G2203/042—Sensors
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Abstract
The invention relates to a centralized automatic lubricating device of a coal mine belt conveyor, which comprises a lubricating oil tank, wherein a liquid level sensor is arranged in the lubricating oil tank and used for detecting the oil level height of lubricating oil in the lubricating oil tank, and the lubricating oil in the lubricating oil tank is transmitted to the inside of a bearing chamber through a lubricating pipeline by a pump arranged on the lubricating oil tank; the lubricating pipeline comprises a plurality of lubricating pipelines, pressure change in the lubricating pipeline is detected through a pressure sensor arranged on the lubricating pipeline, and the tail end of the lubricating pipeline is provided with a flow meter which is used for detecting lubricating oil flowing out of the lubricating pipeline; the temperature sensor is arranged on one side of the bearing and used for detecting the real-time temperature of the bearing; the central control unit is connected with the liquid level sensor, the pump, the pressure sensor, the flow meter and the temperature sensor and controls working parameters of the pump; through gradually adjusting the filling speed, the work labor intensity can be well reduced, accurate filling is carried out, and the filling efficiency of the device is improved.
Description
Technical Field
The invention relates to the technical field of belt conveyors, in particular to a centralized automatic lubricating device of a coal mine belt conveyor.
Background
Bearing lubrication to belt feeder cylinder in the pit, at present mainly realize the lubrication of bearing by artifical regular filling lubricating grease, the problem that from this brings has: each time grease is added, which for safety is also a standard indicator of filling, grease is added to the bearing chamber until a new clean grease is spilled. The negative effects of this are two: one is that the grease filled each time is excessive, which causes huge waste of grease and also brings huge pollution to the environment; the excessive grease filling blocks the movement of the rolling elements and the retainer in the bearing, the rolling elements and the retainer also have the speed concept, excessive friction heat is generated with the grease, and the heat dissipation is influenced to cause the temperature of the bearing to rise. In the process of manually filling lubricating grease, due to the actual condition of the underground environment and the working condition of dust, the lubricating grease is very easy to be polluted, dust particles enter a bearing chamber, and the bearing fails in advance. It is theorized that about 56% of bearing failures are due to lubricant contamination. The underground belt conveyor has narrow space and large danger when the belt runs. The requirements on maintenance personnel are relatively high. If the thought is relaxed, the injury of the personnel is easily caused. The untimely manual grease filling can also cause the service life of the bearing to be shortened, so that the bearing fails in advance.
In conclusion, an automatic lubricating device which can perform lubricating work according to the conveying speed accuracy and the bearing temperature of the belt conveyor, adjust the lubricating speed in real time and improve the filling efficiency is still lacked in the prior art.
Disclosure of Invention
Therefore, the invention provides a centralized automatic lubricating device for a coal mine belt conveyor, which is used for overcoming the problem that an automatic lubricating device which can perform lubricating work according to the conveying speed accuracy and the bearing temperature of the belt conveyor, adjust the lubricating speed in real time and improve the filling efficiency is still lacked in the prior art.
In order to achieve the above object, the present invention provides a centralized automatic lubricating device for a coal mine belt conveyor, comprising,
the lubricating oil tank is internally provided with a liquid level sensor for detecting the oil level height of the lubricating oil in the lubricating oil tank, and the lubricating oil tank is provided with a pump which transmits the lubricating oil in the lubricating oil tank to the inside of the bearing chamber through a lubricating pipeline;
the lubricating pipeline comprises a plurality of lubricating pipelines, pressure sensors are arranged on the plurality of lubricating pipelines and used for detecting pressure changes in the lubricating pipeline, and a flow meter is arranged at the tail end of the lubricating pipeline and used for detecting lubricating oil flowing out of the lubricating pipeline;
the temperature sensor is arranged on one side of the bearing and used for detecting the real-time temperature of the bearing;
the central control unit is respectively connected with the liquid level sensor, the pump, the pressure sensor, the flow meter and the temperature sensor, and is used for receiving data transmitted by the liquid level sensor, the pump, the pressure sensor, the flow meter and the temperature sensor in real time and controlling working parameters of the pump;
in the operation process of the coal mine belt conveyor, the central control unit receives the real-time speed of the belt conveyor, which is detected by a speed sensor arranged on the belt conveyor, compares real-time pressure values, which are detected in real time according to a plurality of lubricating pipelines, with a preset pressure reference value, and adjusts the real-time conveying speed of the coal mine belt conveyor according to the comparison result;
the central control unit determines a lubricating parameter according to the speed of the belt conveyor determined by the pressure value and the bearing temperature measured by the temperature sensor in real time in combination with the conveying distance of the belt conveyor, compares the lubricating parameter calculated in real time with a lubricating parameter reference value, determines a filling parameter of the lubricating device, and performs filling work of lubricating oil according to the determined filling time, the filling amount and the calculated initial filling speed;
when the central control unit operates to a first filling time point according to the preliminarily determined filling speed, the central control unit compares the real-time filling amount from the filling start to the first filling time point with a preset filling amount, and adjusts the filling speed from the first filling time point to a second filling time point according to a comparison result;
when the central control unit adjusts the acceleration speed from a first filling time point to a second filling time point, the central control unit compares the real-time filling amount from the first filling time point to the second filling time point with a preset filling amount, and adjusts the filling speed from the second filling time point to a third filling time point according to a comparison result;
the central control unit adjusts the filling speed from the current filling time point to the next filling time point according to the comparison between the real-time filling amount from the last filling time point to the current filling time point and the preset filling amount until the filling amount and/or the filling time are/is finished;
if the filling time is finished and the filling amount is not reached, the central control unit adjusts the filling speed according to the difference value between the real-time filling amount and the preset filling amount until the filling of the filling amount is finished; if the filling amount is finished and the filling time is not up, the central control unit judges that the lubricating pipeline has a fault; and if the filling amount and the filling time are finished simultaneously, the central control unit judges that the lubricating work is finished.
Furthermore, the central control unit adjusts the conveying speed of the coal mine belt conveyor according to the real-time pressure values measured by the plurality of lubricating pipelines in real time;
the plurality of lubricating pipelines comprise a first lubricating pipeline, a second lubricating pipeline, a third lubricating pipeline and an nth lubricating pipeline; setting the pressure sensor values received in real time as Ps1, ps2, ps3, \8230andPsn, wherein Ps1 represents the real-time pressure value of the first lubricating pipeline, ps2 represents the real-time pressure value of the second lubricating pipeline, ps3 represents the real-time pressure value of the third lubricating pipeline, and Psn represents the real-time pressure value of the nth lubricating pipeline; setting the pressure reference value as P, the number of the real-time pressure values which are larger than the pressure reference value as X, and the speed of the belt conveyor which is measured in real time as Vs, then,
if the X/n is larger than or equal to 0.8, the central control unit judges that the coal mine belt conveyor has a fault;
if X/n is more than or equal to 0.5 and less than 0.8, the central control unit determines that the conveying speed of the coal mine belt conveyor is adjusted to Vt, and Vt =0.95 xVs;
and if X/n is less than 0.5, the central control unit determines that the conveying speed of the coal mine belt conveyor is Vt, and Vt = Vs.
Further, the central control unit determines a lubricating parameter according to the speed of the belt conveyor determined by the pressure value and the bearing temperature measured by the temperature sensor in real time in combination with the conveying distance of the belt conveyor, sets the lubricating parameter as r,
r＝Vt/V0+Ts/T0+Ls/L0
wherein Vt represents a speed of the belt conveyor determined by the pressure value, V0 represents a preset speed, ts represents a bearing temperature measured in real time by the temperature sensor, T0 represents a preset bearing temperature, ls represents a conveying distance of the belt conveyor, and L0 represents a preset conveying distance.
Furthermore, lubrication parameter reference values r1, r2, r3, \ 8230and rn are preset in the central control unit, wherein r1 represents a first lubrication parameter reference value, r2 represents a second lubrication parameter reference value, r3 represents a third lubrication parameter reference value, and rn represents an nth lubrication parameter reference value;
filling parameters J1, J2, J3, \8230andJn are preset in the central control unit, wherein J1 represents a first preset filling parameter, J2 represents a second preset filling parameter, J3 represents a third preset filling parameter, and Jn represents an nth preset filling parameter;
and (4) regarding the ith filling parameter Ji (Qi, ti), wherein Qi represents the ith preset filling quantity, and ti represents the ith preset filling time.
Further, the central control unit compares the real-time calculated lubrication parameter with the lubrication parameter reference value, determines the filling parameter of the lubrication device, sets the real-time calculated lubrication parameter as rs, and then,
if rs is less than or equal to r1, the central control unit determines that the filling parameter is J1, determines that the filling amount is Q1, and determines that the filling time is t1;
if r1 is larger than rs and is smaller than or equal to r2, the central control unit determines that the filling parameter is J2, determines that the filling amount is Q2, and determines that the filling time is t2;
if r2 is larger than rs and smaller than or equal to r3, the central control unit determines that the filling parameter is J3, determines that the filling amount is Q3, and determines that the filling time is t3;
and if r (n-1) < rs < rn, determining the filling parameter as Jn, determining the filling amount as Qn and determining the filling time as tn by the central control unit.
Further, when the device runs, the filling time ti is averagely divided into n times including ti1, ti2, ti3, \8230andtin, wherein ti1 represents a first filling time point, ti2 represents a second filling time point, ti3 represents a third filling time point, tin represents an nth filling time point, the filling time is ti, the filling quantity is Qi, the initial filling speed is Jv, jv = Qi/ti, the preset filling quantity from each filling time point to the next filling time point is Qi/n,
the central control unit adjusts the filling speed from the time point ti1 to the time point ti2 according to the real-time filling amount from the filling start to the time point ti1 and the preset filling amount, sets the real-time filling amount from the filling start to the time point ti1 as Qt11, then,
if Qt11 is greater than Qi/n, the central control unit adjusts the filling speed from ti1 to ti2 to be Jvt1, and Jvt1=0.95 × Jv;
if Qt11= Qi/n, the central control unit determines that the filling speed at the time points from ti1 to ti2 is Jvt1, and Jvt1= Jv;
if Qt11 < Qi/n, the central control unit adjusts the priming speed at time points ti1 to ti2 to Jvt1, jvt1=1.05 × Jv.
Further, the central control unit adjusts the filling speed at the time points ti2 to ti3 according to the real-time filling amount at the time points ti1 to ti2 and the preset filling amount, sets the real-time filling amount at the time points ti1 to ti2 as Qt12, and then,
if Qt12 is greater than Qi/n, the central control unit adjusts the filling speed from ti2 to ti3 to be Jvt2, and Jvt2=0.95 × Jvt1;
if Qt12= Qi/n, the central control unit determines that the filling speed from ti2 to ti3 is Jvt2, and Jvt2= Jvt1;
if Qt12 is less than Qi/n, the central control unit adjusts the filling speed from ti2 to ti3 to be Jvt2, and Jvt2=1.05 × Jvt1;
and the central control unit adjusts the filling speed from the current filling time point to the next filling time point according to the comparison between the real-time filling amount from the previous filling time point to the current filling time point and the preset filling amount until the filling amount and/or the filling time are/is finished.
Further, if the filling time is finished first and the filling amount is not reached, the central control unit adjusts the filling speed according to the difference between the real-time filling amount and the preset filling amount, sets the real-time filling amount to be Qs, sets the preset filling amount to be Qi, sets the real-time filling speed to be Jvs, sets the maximum value of the filling speed to be Jvmax,
if Qs is less than or equal to Qi/2, the central control unit judges that the lubricating pipeline has a fault;
if the Qs is more than or equal to Qix2/3 and more than or equal to Qi2Qs, the central control unit adjusts the filling speed to Jvmax and operates until the filling amount is reached;
if the Qs is more than Qix2/3 and less than or equal to Qi, the central control unit adjusts the filling speed to be 1.2 xJvs and operates until the filling amount is reached.
Further, if the filling amount is completed firstly and the filling time is not up, the central control unit judges that the lubricating pipeline has a fault;
and if the filling amount and the filling time are finished simultaneously, the central control unit judges that the lubricating work is finished.
Further, the maximum value of the filling speed is Jvmax, the minimum value of the filling speed is Jvmin, if the adjusted filling speed is greater than the maximum value of the filling speed, the maximum value of the filling speed is used as a reference, and if the adjusted filling speed is less than the minimum value of the filling speed, the minimum value of the filling speed is used as a reference.
Compared with the prior art, the centralized automatic lubricating device for the coal mine belt conveyor has the advantages that firstly, real-time pressure values measured in real time by the plurality of lubricating pipelines are compared with a preset pressure reference value, the real-time conveying speed of the coal mine belt conveyor is adjusted, secondly, lubricating parameters are determined according to the adjusted speed of the belt conveyor, the bearing temperature and the conveying distance of the conveyor, filling parameters of the lubricating device are determined, finally, when the device runs to a first filling time point according to the determined filling time, the determined filling amount and the calculated initial filling speed, the central control unit adjusts the filling speed from the current filling time point to the next filling time point according to the comparison between the real-time filling amount from the last filling time point to the current filling time point and the preset filling amount until the filling amount and/or the filling time is completed, and the filling speed is adjusted step by step, so that the working labor intensity can be well reduced, the precision is realized, and the efficiency of the device is improved.
Especially, lubricating arrangement can open with the interlocking of belt feeder operating system and stop, avoids causing the waste of grease, and the device possesses long-range and adjusts two kinds of modes on the spot, can open and stop by remote monitoring, also can monitor on the spot and open and stop, fine reduction the fault rate of equipment. The mode of the filling grease that this lubricating arrangement adopted is accurate refueling, and a small amount of many times has avoided because of the bearing trouble that grease filling is too little or too much arouses, has effectively promoted roller bearing's life.
Furthermore, the lubricating device is convenient to install underground, simple to debug and operate, and capable of effectively solving the problems that other systems are complex to operate and difficult to learn. The lubricating device has the characteristic of deep development, can be adjusted, can be deeply researched and developed according to market demands, and has good expandability and popularization.
Drawings
Fig. 1 is a schematic structural diagram of a centralized automatic lubricating device of a coal mine belt conveyor.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the invention provides a centralized automatic lubricating device for a belt conveyor in a coal mine, which comprises a lubricating oil tank 1, wherein a liquid level sensor 2 is arranged in the lubricating oil tank 1 and used for detecting the oil level height of lubricating oil in the lubricating oil tank 1, a pump 3 is arranged on the lubricating oil tank 1, and the lubricating oil in the lubricating oil tank 1 is transmitted to the inside of a bearing chamber through a lubricating pipeline 4 by the pump 3; the lubricating pipeline 4 comprises a plurality of lubricating pipelines, a pressure sensor 5 is arranged on the plurality of lubricating pipelines, the pressure sensor 5 is used for detecting pressure change in the lubricating pipeline 4, a flow meter 7 is arranged at the tail end of the lubricating pipeline, and the flow meter 7 is used for detecting lubricating oil flowing out of the lubricating pipeline; the temperature sensor 6 is arranged on one side of the bearing and used for detecting the real-time temperature of the bearing; and the central control unit 8 is respectively connected with the liquid level sensor 2, the pump 3, the pressure sensor 5, the flow meter 7 and the temperature sensor 6, and is used for receiving data transmitted by the liquid level sensor 2, the pump 3, the pressure sensor 5, the flow meter 7 and the temperature sensor 6 in real time and controlling working parameters of the pump 3.
Specifically, in the embodiment of the present invention, during the operation of the belt conveyor in the coal mine, the central control unit 8 receives the real-time speed of the belt conveyor detected by a speed sensor (not shown in the figure) disposed on the belt conveyor, and the central control unit 8 compares the real-time pressure values measured in real time by the plurality of lubricating pipelines with a preset pressure reference value, and adjusts the real-time conveying speed of the belt conveyor in the coal mine according to the comparison result.
Specifically, in the embodiment of the present invention, the central control unit 8 determines the lubrication parameter according to the speed of the belt conveyor determined by the pressure value and the bearing temperature measured by the temperature sensor 6 in real time in combination with the conveying distance of the belt conveyor, the central control unit 8 compares the lubrication parameter calculated in real time with the lubrication parameter reference value, determines the filling parameter of the lubricating device, and performs the filling operation of the lubricating oil according to the determined filling time and filling amount and the calculated initial filling speed.
Specifically, in the embodiment of the present invention, when the central control unit 8 operates to the first filling time point according to the preliminarily determined filling speed, the central control unit 8 compares the real-time filling amount from the filling start to the first filling time point with the preset filling amount, and adjusts the filling speed from the first filling time point to the second filling time point according to the comparison result.
Specifically, in the embodiment of the present invention, when the central control unit 8 changes from the first filling time point to the second filling time point according to the adjusted acceleration speed, the central control unit 8 compares the real-time filling amount from the first filling time point to the second filling time point with the preset filling amount, and adjusts the filling speed from the second filling time point to the third filling time point according to the comparison result.
Specifically, in the embodiment of the present invention, the central control unit 8 adjusts the filling speed from the current filling time point to the next filling time point according to the comparison between the real-time filling amount from the previous filling time point to the current filling time point and the preset filling amount until the filling amount and/or the filling time is completed.
Specifically, in the embodiment of the present invention, if the filling time is finished and the filling amount is not reached, the central control unit 8 adjusts the filling speed according to a difference between the real-time filling amount and a preset filling amount until the filling of the filling amount is finished; if the filling amount is finished and the filling time is not up, the central control unit 8 judges that the lubricating pipeline has a fault; and if the filling amount and the filling time are completed simultaneously, the central control unit 8 judges that the lubricating work is completed.
Specifically, in the embodiment of the invention, the central control unit adjusts the conveying speed of the coal mine belt conveyor according to the real-time pressure values measured by a plurality of lubricating pipelines in real time; the plurality of lubricating pipelines comprise a first lubricating pipeline, a second lubricating pipeline, a third lubricating pipeline and an nth lubricating pipeline; setting the pressure sensor values received in real time as Ps1, ps2, ps3, \8230andPsn, wherein Ps1 represents the real-time pressure value of the first lubricating pipeline, ps2 represents the real-time pressure value of the second lubricating pipeline, ps3 represents the real-time pressure value of the third lubricating pipeline, and Psn represents the real-time pressure value of the nth lubricating pipeline; setting the pressure reference value as P, setting n as a positive number, setting the number of the real-time pressure values which is larger than the pressure reference value as X, setting the speed of the belt conveyor which is measured in real time as Vs, then,
if the X/n is larger than or equal to 0.8, the central control unit judges that the coal mine belt conveyor has a fault;
if X/n is more than or equal to 0.5 and less than 0.8, the central control unit determines that the conveying speed of the coal mine belt conveyor is adjusted to Vt, and Vt =0.95 × Vs;
and if X/n is less than 0.5, the central control unit determines that the conveying speed of the coal mine belt conveyor is Vt, and Vt = Vs.
Specifically, in the embodiment of the invention, the pressure change of the pipeline can be detected in time through the real-time pressure values of the plurality of lubricating pipelines, so that the blocking state of each lubricating point can be known, if the number of the blocked lubricating pipelines accounts for the number of the total lubricating pipelines to exceed a preset value, the fault of the conveyor is judged, the machine needs to be stopped for maintenance, and if the number of the blocked lubricating pipelines is within a certain range, the speed of the conveyor is reduced for adjustment, so that lubricating oil can be better injected into the bearing, the oil injection amount is increased, and when the blocking number of the lubricating pipelines is lower than the preset value, the speed of the conveyor does not need to be adjusted, so that the lubricating and injecting effects are improved, and meanwhile, the conveying effect of the conveyor is improved.
Specifically, in the embodiment of the invention, the central control unit determines the lubrication parameter according to the speed of the belt conveyor determined by the pressure value and the bearing temperature measured by the temperature sensor in real time in combination with the conveying distance of the belt conveyor, sets the lubrication parameter as r,
r＝Vt/V0+Ts/T0+Ls/L0
wherein Vt represents a speed of the belt conveyor determined by the pressure value, V0 represents a preset speed, ts represents a bearing temperature measured in real time by the temperature sensor, T0 represents a preset bearing temperature, ls represents a conveying distance of the belt conveyor, and L0 represents a preset conveying distance.
Specifically, in the embodiment of the present invention, the preset conveying speed of the conveyor may be determined according to the type of the conveyor, in this embodiment, the value of V0 is 1.75m/s, the preset temperature of the bearing may be determined according to the type of the bearing, in this embodiment, the value of T0 is 60 ℃, the preset conveying distance may be a distance between the current roller bearing and the next roller bearing and may be a distance between the current roller bearing and the previous roller bearing.
Specifically, in the embodiment of the present invention, lubrication parameter reference values r1, r2, r3, \ 8230and rn are preset in the central control unit, where r1 represents a first lubrication parameter reference value, r2 represents a second lubrication parameter reference value, r3 represents a third lubrication parameter reference value, rn represents an nth lubrication parameter reference value, and n is set to be a positive number.
Specifically, in the embodiment of the present invention, filling parameters J1, J2, J3, \ 8230and Jn are preset in the central control unit, where J1 represents a first preset filling parameter, J2 represents a second preset filling parameter, J3 represents a third preset filling parameter, and Jn represents an nth preset filling parameter. And (4) regarding the ith filling parameter Ji (Qi, ti), wherein Qi represents the ith preset filling quantity, and ti represents the ith preset filling time.
Specifically, in the embodiment of the present invention, the central control unit compares the real-time calculated lubrication parameter with the reference value of the lubrication parameter, determines the filling parameter of the lubrication device, sets the real-time calculated lubrication parameter to rs, and then,
if rs is less than or equal to r1, the central control unit determines that the filling parameter is J1, determines that the filling amount is Q1, and determines that the filling time is t1;
if r1 is larger than rs and is smaller than or equal to r2, the central control unit determines that the filling parameter is J2, determines that the filling amount is Q2, and determines that the filling time is t2;
if r2 is larger than rs and smaller than or equal to r3, the central control unit determines that the filling parameter is J3, determines that the filling amount is Q3, and determines that the filling time is t3;
and if r (n-1) < rs < rn, determining the filling parameter as Jn, determining the filling amount as Qn and determining the filling time as tn by the central control unit.
Specifically, in the embodiment of the present invention, the lubricating device operates according to the determined filling time and filling amount and the calculated filling speed, the central control unit averagely divides the filling time ti into n times, including ti1, ti2, ti3, \8230andtin, where ti1 represents a first filling time point, ti2 represents a second filling time point, ti3 represents a third filling time point, tin represents an nth filling time point, the filling time is ti, the filling amount is Qi, i =1, 2, 3, \8230, and n, n is a positive number, the initial filling speed is Jv, and Jv = Qi/n, and the preset amount from each filling time point to the next filling time point is Qi/n.
Specifically, in the embodiment of the present invention, the central control unit adjusts the filling speed at the time points ti1 to ti2 according to the real-time filling amount from the filling start to the time point ti1 and the preset filling amount, sets the real-time filling amount from the filling start to the time point ti1 to be Qt11, and then,
if Qt11 is greater than Qi/n, the central control unit adjusts the filling speed from ti1 to ti2 to be Jvt1, and Jvt1=0.95 × Jv;
if Qt11= Qi/n, the central control unit determines that the filling speed at the time points from ti1 to ti2 is Jvt1, and Jvt1= Jv;
if Qt11 is less than Qi/n, the central control unit adjusts the filling speed at the time points ti1 to ti2 to be Jvt1, and Jvt1=1.05 × Jv.
Specifically, in the embodiment of the present invention, the central control unit divides the filling time into a plurality of times, specifically into a plurality of filling time points, based on specific implementation, for example, two hours of filling, may divide the filling time into four filling time points, for example, one minute of filling, may divide the filling time into two filling time points, and based on specific division, adjusts the next filling speed according to the real-time filling amount at the current filling time point, so that the filling speed fits the filling amount, the filling is performed uniformly, and the filling effect of the lubricating device is improved.
Specifically, in the embodiment of the present invention, the central control unit adjusts the filling speed at the time points ti2 to ti3 according to the real-time filling amount at the time points ti1 to ti2 and the preset filling amount, sets the real-time filling amount at the time points ti1 to ti2 to be Qt12, and then,
if Qt12 is greater than Qi/n, the central control unit adjusts the filling speed from ti2 to ti3 to be Jvt2, and Jvt2=0.95 × Jvt1;
if Qt12= Qi/n, the central control unit determines that the filling speed from ti2 to ti3 is Jvt2, and Jvt2= Jvt1;
if Qt12 is less than Qi/n, the central control unit adjusts the filling speed at the time points ti2 to ti3 to be Jvt2, and Jvt2=1.05 × Jvt1.
Specifically, in the embodiment of the present invention, the central control unit adjusts the filling speed from the current filling time point to the next filling time point according to the comparison between the real-time filling amount from the previous filling time point to the current filling time point and the preset filling amount until the filling amount and/or the filling time is completed.
Specifically, in the embodiment of the present invention, if the filling time is completed first and the filling amount is not reached, the central control unit adjusts the filling speed according to the difference between the real-time filling amount and the preset filling amount, sets the real-time filling amount to be Qs, sets the preset filling amount to be Qi, sets the real-time filling speed to be Jvs, sets the maximum value of the filling speed to be Jvmax,
if Qs is less than or equal to Qi/2, the central control unit judges that the lubrication pipeline has a fault;
if Qi/2 is greater than Qs and is not greater than Qi multiplied by 2/3, the central control unit adjusts the filling speed to Jvmax and operates until the filling amount is reached;
if the Qs is more than Qix2/3 and less than or equal to Qi, the central control unit adjusts the filling speed to be 1.2 xJvs and operates until the filling amount is reached.
Specifically, in the embodiment of the invention, the filling speed is adjusted to enable the filling amount to reach the standard, and in the filling process, if the filling amount is insufficient, the lubricating pipeline has a problem, the lubricating oil cannot be successfully injected into the bearing, and the filling pressure is adjusted by adjusting the filling speed, so that the blocked pipeline can be opened, and meanwhile, the filling efficiency of the device is improved. If the filling amount is completed firstly and the filling time is not up, the central control unit judges that the lubricating pipeline has a fault; and if the filling amount and the filling time are finished simultaneously, the central control unit judges that the lubricating work is finished.
Specifically, in the embodiment of the present invention, the maximum value of the filling speed preset in the central control unit is Jvmax, and the minimum value of the filling speed is Jvmin, where if the adjusted filling speed is greater than the maximum value of the filling speed, the maximum value of the filling speed is used as a reference, and if the adjusted filling speed is less than the minimum value of the filling speed, the minimum value of the filling speed is used as a reference.
The lubricating-oil tank's that has lubricating-oil tank highest level value and minimum level value in the well accuse unit in advance, the liquid level height of setting for the lubricating-oil tank that level sensor measured in real time is Hs, sets for highest level value and is Hmax, sets for minimum level value and is Hmin, when the liquid level height of the lubricating-oil tank that measures in real time is less than minimum level value, well accuse unit sends the alarm instruction, when the liquid level height of the lubricating-oil tank that measures in real time is higher than maximum level value, well accuse unit sends and overhauls the instruction.
The lubricating oil tank is further provided with an oil inlet, the oil inlet is used for injecting lubricating oil into the lubricating oil tank, the lubricating oil tank is connected with an oil suction port of the pump, in the embodiment, the pump can adopt a plunger pump, the plunger pump is driven by a motor to provide pressure, and the lubricating oil in the lubricating oil tank is delivered to the inside of the bearing chamber through a pipeline.
The invention can also be provided with a pressure automatic reversing valve, if the pressure of the current lubricating pipeline exceeds the preset value, the automatic reversing is carried out, namely, the lubricating oil is not transmitted to the lubricating management. And an air pump can be arranged on the lubricating oil tank for filling.
Specifically, in the embodiment of the invention, the lubricating device can be remotely controlled, can be locally adjusted, can be remotely monitored, started and stopped, and can be locally monitored, so that the failure rate of equipment is well reduced; the lubricating device is connected with the starting and stopping device of the belt conveyor needing to be lubricated and used for starting and stopping the belt conveyor at any time, so that the lubricating filling work is facilitated, and the filling efficiency of the lubricating device is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A centralized automatic lubricating device of a coal mine belt conveyor is characterized by comprising,
the lubricating oil tank is internally provided with a liquid level sensor for detecting the oil level height of the lubricating oil in the lubricating oil tank, and the lubricating oil tank is provided with a pump which transmits the lubricating oil in the lubricating oil tank to the inside of the bearing chamber through a lubricating pipeline;
the lubricating pipeline comprises a plurality of lubricating pipelines, pressure sensors are arranged on the plurality of lubricating pipelines and used for detecting pressure changes in the lubricating pipeline, and a flow meter is arranged at the tail end of the lubricating pipeline and used for detecting lubricating oil flowing out of the lubricating pipeline;
the temperature sensor is arranged on one side of the bearing and used for detecting the real-time temperature of the bearing;
the central control unit is respectively connected with the liquid level sensor, the pump, the pressure sensor, the flow meter and the temperature sensor, and is used for receiving data transmitted by the liquid level sensor, the pump, the pressure sensor, the flow meter and the temperature sensor in real time and controlling working parameters of the pump;
in the operation process of the coal mine belt conveyor, the central control unit receives the real-time speed of the belt conveyor detected by a speed sensor arranged on the belt conveyor, compares real-time pressure values measured in real time by the central control unit according to a plurality of lubricating pipelines with a preset pressure reference value, and adjusts the real-time conveying speed of the coal mine belt conveyor according to the comparison result;
the central control unit determines a lubricating parameter according to the speed of the belt conveyor determined by the pressure value and the bearing temperature measured by the temperature sensor in real time in combination with the conveying distance of the belt conveyor, compares the lubricating parameter calculated in real time with a lubricating parameter reference value, determines a filling parameter of the lubricating device, and performs filling work of lubricating oil according to the determined filling time, the filling amount and the calculated initial filling speed;
when the central control unit operates to a first filling time point according to the preliminarily determined filling speed, the central control unit compares the real-time filling amount from the filling start to the first filling time point with a preset filling amount, and adjusts the filling speed from the first filling time point to a second filling time point according to the comparison result;
when the central control unit adjusts the filling speed from a first filling time point to a second filling time point according to the adjusted filling speed, the central control unit compares the real-time filling amount from the first filling time point to the second filling time point with a preset filling amount, and adjusts the filling speed from the second filling time point to a third filling time point according to a comparison result;
the central control unit adjusts the filling speed from the current filling time point to the next filling time point according to the comparison between the real-time filling amount from the previous filling time point to the current filling time point and the preset filling amount until the filling amount and/or the filling time is completed;
if the filling time is finished and the filling amount is not reached, the central control unit adjusts the filling speed according to the difference value between the real-time filling amount and the preset filling amount until the filling of the filling amount is finished; if the filling amount is finished and the filling time is not up, the central control unit judges that the lubricating pipeline has a fault; and if the filling amount and the filling time are finished simultaneously, the central control unit judges that the lubricating work is finished.
2. The centralized automatic lubricating device for the coal mine belt conveyor according to claim 1, wherein the central control unit adjusts the conveying speed of the coal mine belt conveyor according to real-time pressure values measured by a plurality of lubricating pipelines in real time;
the plurality of lubricating pipelines comprise a first lubricating pipeline, a second lubricating pipeline, a third lubricating pipeline and an nth lubricating pipeline; setting the pressure sensor values received in real time as Ps1, ps2, ps3, \8230andPsn, wherein Ps1 represents the real-time pressure value of the first lubricating pipeline, ps2 represents the real-time pressure value of the second lubricating pipeline, ps3 represents the real-time pressure value of the third lubricating pipeline, and Psn represents the real-time pressure value of the nth lubricating pipeline; setting the pressure reference value as P, setting the number of the real-time pressure values larger than the pressure reference value as X, and setting the speed of the belt conveyor measured in real time as Vs,
if the X/n is larger than or equal to 0.8, the central control unit judges that the coal mine belt conveyor has a fault;
if X/n is more than or equal to 0.5 and less than 0.8, the central control unit determines that the conveying speed of the coal mine belt conveyor is adjusted to Vt, and Vt =0.95 × Vs;
and if X/n is less than 0.5, the central control unit determines that the conveying speed of the coal mine belt conveyor is Vt, and Vt = Vs.
3. The centralized automatic lubrication device for the coal mine belt conveyor according to claim 2, wherein the central control unit determines a lubrication parameter according to the speed of the belt conveyor determined by the pressure value and the bearing temperature measured by the temperature sensor in real time in combination with the conveying distance of the belt conveyor, sets the lubrication parameter as r,
r＝Vt/V0+Ts/T0+Ls/L0
wherein Vt represents a speed of the belt conveyor determined by the pressure value, V0 represents a preset speed, ts represents a bearing temperature measured in real time by the temperature sensor, T0 represents a preset bearing temperature, ls represents a conveying distance of the belt conveyor, and L0 represents a preset conveying distance.
4. The centralized automatic lubricating device for the coal mine belt conveyor according to claim 3, wherein lubricating parameter reference values r1, r2, r3, \8230andrn are preset in the central control unit, wherein r1 represents a first lubricating parameter reference value, r2 represents a second lubricating parameter reference value, r3 represents a third lubricating parameter reference value, and rn represents an nth lubricating parameter reference value;
filling parameters J1, J2, J3, \8230andJn are preset in the central control unit, wherein J1 represents a first preset filling parameter, J2 represents a second preset filling parameter, J3 represents a third preset filling parameter, and Jn represents an nth preset filling parameter;
and (4) regarding the ith filling parameter Ji (Qi, ti), wherein Qi represents the ith preset filling quantity, and ti represents the ith preset filling time.
5. The centralized automatic lubrication device for the coal mine belt conveyor according to claim 4, wherein the central control unit compares the real-time calculated lubrication parameter with a lubrication parameter reference value, determines the filling parameter of the lubrication device, sets the real-time calculated lubrication parameter to rs, and then,
if rs is less than or equal to r1, the central control unit determines that the filling parameter is J1, determines that the filling amount is Q1, and determines that the filling time is t1;
if r1 is larger than rs and is smaller than or equal to r2, the central control unit determines that the filling parameter is J2, determines that the filling amount is Q2, and determines that the filling time is t2;
if r2 is larger than rs and smaller than or equal to r3, the central control unit determines that the filling parameter is J3, determines that the filling amount is Q3, and determines that the filling time is t3;
and if r (n-1) < rs < rn, determining the filling parameter as Jn, determining the filling amount as Qn and determining the filling time as tn by the central control unit.
6. The centralized automatic lubrication device for the coal mine belt conveyor as claimed in claim 5, wherein when the device is in operation, the filling time ti is averagely divided into n times including ti1, ti2, ti3, \8230:andtin, wherein ti1 represents a first filling time point, ti2 represents a second filling time point, ti3 represents a third filling time point, tin represents an nth filling time point, the filling time is ti, the filling amount is Qi, the initial filling speed is Jv, jv = Qi/ti, the preset filling amount from each filling time point to the next filling time point is Qi/n,
the central control unit adjusts the filling speed from the time point ti1 to the time point ti2 according to the real-time filling amount from the filling start to the time point ti1 and the preset filling amount, sets the real-time filling amount from the filling start to the time point ti1 as Qt11, then,
if Qt11 is greater than Qi/n, the central control unit adjusts the filling speed from ti1 to ti2 to be Jvt1, and Jvt1=0.95 × Jv;
if Qt11= Qi/n, the central control unit determines that the filling speed at the time points from ti1 to ti2 is Jvt1, and Jvt1= Jv;
if Qt11 < Qi/n, the central control unit adjusts the priming speed at time points ti1 to ti2 to Jvt1, jvt1=1.05 × Jv.
7. The centralized automatic lubricating device for the coal mine belt conveyor according to claim 6, wherein the central control unit adjusts the filling speed from ti2 to ti3 according to the real-time filling amount from ti1 to ti2 and the preset filling amount, and sets the real-time filling amount from ti1 to ti2 as Qt12, then,
if Qt12 is greater than Qi/n, the central control unit adjusts the filling speed from ti2 to ti3 to be Jvt2, and Jvt2=0.95 × Jvt1;
if Qt12= Qi/n, the central control unit determines that the filling speed from ti2 to ti3 is Jvt2, and Jvt2= Jvt1;
if Qt12 is less than Qi/n, the central control unit adjusts the filling speed from ti2 to ti3 to be Jvt2, and Jvt2=1.05 × Jvt1;
and the central control unit adjusts the filling speed from the current filling time point to the next filling time point according to the comparison between the real-time filling amount from the last filling time point to the current filling time point and the preset filling amount until the filling amount and/or the filling time are/is finished.
8. The centralized automatic lubricating device for the coal mine belt conveyor according to claim 7, wherein if the filling time is completed first and the filling amount is not reached, the central control unit adjusts the filling speed according to the difference between the real-time filling amount and the preset filling amount, wherein the real-time filling amount is set to be Qs, the preset filling amount is set to be Qi, the real-time filling speed is set to be Jvs, and the maximum value of the filling speed is set to be Jvmax,
if Qs is less than or equal to Qi/2, the central control unit judges that the lubricating pipeline has a fault;
if Qi/2 is greater than Qs and is not greater than Qi multiplied by 2/3, the central control unit adjusts the filling speed to Jvmax and operates until the filling amount is reached;
if the Qs is more than Qix2/3 and less than or equal to Qi, the central control unit adjusts the filling speed to be 1.2 xJvs and runs until the filling amount is reached.
9. The centralized automatic lubricating device for the coal mine belt conveyor as claimed in claim 8, wherein if the filling amount is completed first and the filling time is not up, the central control unit determines that the lubricating pipeline is in failure; and if the filling amount and the filling time are finished simultaneously, the central control unit judges that the lubricating work is finished.
10. The centralized automatic lubricating device for the coal mine belt conveyor as claimed in claim 9, wherein the maximum value of the filling speed is Jvmax and the minimum value of the filling speed is Jvmin, which are preset in the central control unit, and the maximum value of the filling speed is used as the reference if the adjusted filling speed is greater than the maximum value of the filling speed, and the minimum value of the filling speed is used as the reference if the adjusted filling speed is less than the minimum value of the filling speed.
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