阅读说明：本技术 一种煤矿带式输送机集中自动润滑装置 (Centralized automatic lubricating device for coal mine belt conveyor ) 是由 胡平 吕晨辉 刘新龙 李新 耿彬 黄青 宋清爽 高瑞云 于华 于 2021-08-20 设计创作，主要内容包括：本发明涉及一种煤矿带式输送机集中自动润滑装置,包括润滑油箱,其内设置有液位传感器,用以检测润滑油箱内的润滑油的油位高度,通过设置在润滑油箱上的泵将润滑油箱内的润滑油通过润滑管路传输至轴承室内部；润滑管路,其包括若干润滑管道,通过润滑管道上设置的压力传感器检测该润滑管路中的压力变化,润滑管道的末端设置有流量表,流量表用以对该润滑管道流出的润滑油进行检测；温度传感器,其设置在轴承一侧,用以检测轴承的实时温度；中控单元与液位传感器、泵、压力传感器、流量表和温度传感器连接,并控制泵的工作参数；通过逐步对加注速度进行调整,能够很好的降低工作劳动强度,进行精准加注,提高装置的加注效率。(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.)

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 is from the first filling time point to the second filling time point according to the adjusted acceleration speed, the central control unit 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;

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.

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 pressure sensor values received in real time as Ps1, Ps2, Ps3, … and Psn, wherein Ps1 represents a real-time pressure value of the first lubricating pipeline, Ps2 represents a real-time pressure value of the second lubricating pipeline, Ps3 represents a real-time pressure value of the third lubricating pipeline, and Psn represents a 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 be Vt, and the Vt is 0.95 multiplied by Vs;

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 is 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

where Vt denotes a speed of the belt conveyor determined by the pressure value, V0 denotes a preset speed, Ts denotes a bearing temperature measured in real time by the temperature sensor, T0 denotes a preset bearing temperature, Ls denotes a conveying distance of the belt conveyor, and L0 denotes a preset conveying distance.

4. The centralized automatic lubricating device for the coal mine belt conveyor, as claimed in claim 3, wherein lubricating parameter reference values r1, r2, r3, … and rn 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, … and Jn 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 not more than 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 t 1;

if r1 is larger than rs and is not larger than 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 t 2;

if r2 is larger than rs and is not larger than 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 t 3;

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 lubricating device for the coal mine belt conveyor, as claimed in claim 5, wherein when the device is in operation, the filling time ti is divided into n times on average, including ti1, ti2, ti3, … and tin, 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, the Jv is Qi/ti, the preset 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 ti1 to the ti2 according to the real-time filling amount from the filling start to the ti1 time point and the preset filling amount, sets the real-time filling amount from the filling start to the ti1 time point to be 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 is 0.95 × Jv;

if Qt11 is Qi/n, the central control unit determines that the filling speed from ti1 to ti2 is Jvt1, and Jvt1 is Jv;

if Qt11 < Qi/n, the central control unit adjusts the filling speed from ti1 to ti2 to Jvt1, Jvt1 being 1.05 × Jv.

7. The centralized automatic lubricating device for the coal mine belt conveyor, as claimed in 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 to 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 is 0.95 × Jvt 1;

if Qt12 is Qi/n, the central control unit determines that the filling speed from ti2 to ti3 is Jvt2, and Jvt2 is Jvt 1;

if Qt12 is less than Qi/n, the central control unit adjusts the filling speed from ti2 to ti3 to Jvt2, and Jvt2 is 1.05 × Jvt 1;

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 amount is not reached due to the previously completed filling time, 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, 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 the Qs is more than Qi/2 and less than or equal to 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 Qix 2/3 and less than or equal to Qi, the central control unit adjusts the filling speed to be 1.2 x Jvs and operates 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.

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

To the bearing lubrication of belt feeder cylinder in the pit, at present mainly rely on artifical regular filling grease to realize the lubrication of bearing, the problem that from this brings has: each time grease is filled, which for safety is also a standard indicator of filling, grease is filled into 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 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 is from the first filling time point to the second filling time point according to the adjusted acceleration speed, the central control unit 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;

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.

Further, 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 pressure sensor values received in real time as Ps1, Ps2, Ps3, … and Psn, wherein Ps1 represents a real-time pressure value of the first lubricating pipeline, Ps2 represents a real-time pressure value of the second lubricating pipeline, Ps3 represents a real-time pressure value of the third lubricating pipeline, and Psn represents a 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 be Vt, and the Vt is 0.95 multiplied by Vs;

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 is 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

where Vt denotes a speed of the belt conveyor determined by the pressure value, V0 denotes a preset speed, Ts denotes a bearing temperature measured in real time by the temperature sensor, T0 denotes a preset bearing temperature, Ls denotes a conveying distance of the belt conveyor, and L0 denotes a preset conveying distance.

Further, lubrication parameter reference values r1, r2, r3, … and 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, … and Jn 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 not more than 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 t 1;

if r1 is larger than rs and is not larger than 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 t 2;

if r2 is larger than rs and is not larger than 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 t 3;

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 is operated, the filling time ti is averagely divided into n times, including ti1, ti2, ti3, … and tin, 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 is 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 ti1 to the ti2 according to the real-time filling amount from the filling start to the ti1 time point and the preset filling amount, sets the real-time filling amount from the filling start to the ti1 time point to be 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 is 0.95 × Jv;

if Qt11 is Qi/n, the central control unit determines that the filling speed from ti1 to ti2 is Jvt1, and Jvt1 is Jv;

if Qt11 < Qi/n, the central control unit adjusts the filling speed from ti1 to ti2 to Jvt1, Jvt1 being 1.05 × Jv.

Further, 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, sets the real-time filling amount from ti1 to ti2 to 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 is 0.95 × Jvt 1;

if Qt12 is Qi/n, the central control unit determines that the filling speed from ti2 to ti3 is Jvt2, and Jvt2 is Jvt 1;

if Qt12 is less than Qi/n, the central control unit adjusts the filling speed from ti2 to ti3 to Jvt2, and Jvt2 is 1.05 × Jvt 1;

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.

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 Qi/2 and less than or equal to 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 Qix 2/3 and less than or equal to Qi, the central control unit adjusts the filling speed to be 1.2 x Jvs 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.

Furthermore, 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 a 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 speed of the adjusted belt conveyor, the temperature of a bearing 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 filling amount and the calculated initial filling speed, a central control unit adjusts the filling speed from the current 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, the filling speed is gradually adjusted, so that the working labor intensity can be well reduced, the accurate filling is carried out, and the filling 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 grease filling that this lubricating arrangement adopted is accurate oiling, and a small amount of is many times, has avoided effectively promoting roller bearing's life because of the bearing trouble that the grease filling is too little or too much arouses.

Furthermore, the lubricating device is convenient to install underground, simple to debug and operate, and effectively solves 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 principle 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 device comprises a lubricating pipeline 4, a pressure sensor 5 is arranged on the lubricating pipeline, 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 finished simultaneously, the central control unit 8 judges that the lubricating work is finished.

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 pressure sensor values received in real time as Ps1, Ps2, Ps3, … and Psn, wherein Ps1 represents a real-time pressure value of the first lubricating pipeline, Ps2 represents a real-time pressure value of the second lubricating pipeline, Ps3 represents a real-time pressure value of the third lubricating pipeline, and Psn represents a 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 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 be Vt, and the Vt is 0.95 multiplied by Vs;

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 is 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

where Vt denotes a speed of the belt conveyor determined by the pressure value, V0 denotes a preset speed, Ts denotes a bearing temperature measured in real time by the temperature sensor, T0 denotes a preset bearing temperature, Ls denotes a conveying distance of the belt conveyor, and L0 denotes 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, 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, …, 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, …, and 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 not more than 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 t 1;

if r1 is larger than rs and is not larger than 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 t 2;

if r2 is larger than rs and is not larger than 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 t 3;

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, … and tin, 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 is set to 1, 2, 3, … and n, n is a positive number, the initial filling speed is Jv, Jv is Qi/ti, and the preset filling 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, and sets the real-time filling amount from the filling start to the time point ti1 to 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 is 0.95 × Jv;

if Qt11 is Qi/n, the central control unit determines that the filling speed from ti1 to ti2 is Jvt1, and Jvt1 is Jv;

if Qt11 < Qi/n, the central control unit adjusts the filling speed from ti1 to ti2 to Jvt1, Jvt1 being 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 ti2 to ti3 time points according to the real-time filling amount from ti1 to ti2 time point and the preset filling amount, sets the real-time filling amount from ti1 to ti2 filling time point to 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 is 0.95 × Jvt 1;

if Qt12 is Qi/n, the central control unit determines that the filling speed from ti2 to ti3 is Jvt2, and Jvt2 is Jvt 1;

if Qt12 < Qi/n, the central control unit adjusts the filling speed from ti2 to ti3 to Jvt2, Jvt2 being 1.05 × Jvt 1.

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 lubricating pipeline has a fault;

if the Qs is more than Qi/2 and less than or equal to 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 Qix 2/3 and less than or equal to Qi, the central control unit adjusts the filling speed to be 1.2 x Jvs 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, a maximum value of the filling speed is preset in the central control unit as Jvmax, and a minimum value of the filling speed is preset as 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 taken 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 taken as a reference.

The lubricating oil tank that has in advance in the well accuse unit has the highest liquid level value and the minimum liquid level value of lubricating oil tank, sets for the liquid level height of the lubricating oil tank that level sensor measured in real time to be Hs, sets for the highest liquid level value to be Hmax, sets for the minimum liquid level value to be Hmin, when the liquid level height of the lubricating oil tank that measures in real time is less than the minimum liquid level value, well accuse unit sends the warning instruction, when the liquid level height of the lubricating oil tank that measures in real time is higher than the maximum liquid 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, the pump in the embodiment 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.