CN103982181B - A kind of coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system and control method - Google Patents
A kind of coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system and control method Download PDFInfo
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- CN103982181B CN103982181B CN201410227486.2A CN201410227486A CN103982181B CN 103982181 B CN103982181 B CN 103982181B CN 201410227486 A CN201410227486 A CN 201410227486A CN 103982181 B CN103982181 B CN 103982181B
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Abstract
The present invention discloses a kind of coalcutter high reliability mechanical electronic hydraulic short distance and cuts and cut transmission system, comprises cutting motor, hydraulic power actuating system, gear train assembly, cutting drum, controller, data collector and treater; The power of described cutting motor inputs cutting drum after hydraulic power actuating system, gear train assembly; Also disclose the control method that a kind of section is cut transmission system; The present invention adopts hydraulic power actuating system to transmit power, it is achieved that short distance transmission, can avoid because heavy duty rocking arm distortion produces to destroy, reliability height; Pulling speed and cutting drum rotating speed can be regulated by respectively, and cutting drum can be made to cut by reasonable thickness of cutting, given play to complete machine maximum cut the ability of effect of cutting; The relative conventional motors gear train assembly of its hydraulic power actuating system adopted has more preferably shock resistance; Many pumps multi-motor system that it adopts can fall power continuation work when certain element lost efficacy, and can avoid idle cost.
Description
Technical field
The present invention relates to coalcutter technical field, cut transmission system and control method in particular to cutting of a kind of coalcutter.
Background technology
At present, coalcutter cuts and cuts the principle that transmission system applies is all driven by motor mechanical gear transmission, amplifies transmission torque, it is achieved mining to cut and cut, existing coalcutter exists following main drawback:
One, the rocking arm of coalcutter is proposed very high requirement by the drive mechanism of existing winning machine cutting part, not only complex structure, difficulty of processing be big, production cost height to make rocking arm, and the stress deformation that the most important is rocking arm under heavy duty operating mode can bring gear train assembly to destroy, thus its reliability is caused to reduce.
Two, existing coalcutter is mainly by regulating pulling speed to make cutting power remain near setting power, and the rotating speed of cutting drum can not regulate. Practical work process to be made cutting drum cut by reasonable thickness of cutting in cutting course, what performance complete machine was maximum cuts the ability cutting effect, then pulling speed and cutting drum rotating speed need to keep certain relation, so the rotating speed of cutting drum needs to regulate according to pulling speed size.
Three, coalcutter loading conditions is relatively more severe, and often with strong shock and vibration, it is undesirable that existing coalcutter cuts the impact resistance cutting transmission system, and the transmission parts that work under strong shock and vibration operating mode for a long time easily damage.
Four, namely lose coal mining ability after certain transmission parts damages of coalcutter, cause stopping work so that coal mining enterprise suffers huge loss.
Therefore existing coalcutter cuts and cuts transmission system and face heavy duty rocking arm distortion, cutting drum can not speed governing, impact resistance is undesirable and parts damages cause the problem stopped work, fundamentally address these problems, it is necessary to transmission system is cut in a kind of novel section of design.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of coalcutter high reliability mechanical electronic hydraulic short distance to cut and cut transmission system and control method, to solve, existing winning machine cutting part transmission system is easily damaged in heavy duty operating mode rocking arm distortion situation, cutting drum can not speed governing, impact resistance be undesirable and parts damages cause the problems such as shut-down.
Coalcutter high reliability mechanical electronic hydraulic short distance of the present invention is cut and is cut transmission system, comprises cutting motor, hydraulic power actuating system, gear train assembly, cutting drum, controller, data collector and treater;
The power input hydraulic transmission system of described cutting motor, the power input gear transmission system of described hydraulic power actuating system, the power input cutting drum of described gear train assembly;
Described data collector comprises the drum rotational speed sensor of detection cutting drum rotating speed, the pressure transmitter of detection hydraulic power actuating system operating pressure and the velocity sensor of detection shearer haulage speed;
Described treater is electrically connected with controller, and treater is also electrically connected with drum rotational speed sensor, pressure transmitter and velocity sensor;
Described treater is used for: the cutting drum tachometer value that the hydraulic power actuating system operating pressure value detected according to described pressure transmitter and described drum rotational speed sensor detect, calculate winning machine cutting part real output value, and judge cutting unit real output value whether near setting power; The pulling speed value detected according to velocity sensor and pulling speed and cutting drum rotating speed best correspondence calculate best cutting drum tachometer value, and judge that whether cutting drum tachometer value that drum rotational speed sensor detects is close to the best cutting drum tachometer value calculated;
Described controller is used for the judged result according to described treater and controls described pulling speed and the speed of described cutting drum.
Further, described hydraulic power actuating system comprises master loop and subsidiary loop; Described master loop comprises the closed circuit being made up of pump group, quantitative groups of motors and control valve group; Described subsidiary loop comprises heat exchange loop and repairing loop, and described heat exchange loop is composed in series by back pressure valve, water cooler and back pressure check valve, and the part high-temperature oil liquid of described master loop is back to fuel tank through back pressure valve, water cooler, back pressure check valve; Repairing loop is made up of repairing motor, the motor-driven repairing pump of repairing, fuel tank, the coarse filter being arranged on repairing pump intake, the fine filter being arranged on repairing pump discharge, the repairing check valve being arranged in series in repairing loop and surplus valve.
Further, described gear train assembly comprises power coupling mechanism, first step planet circular system and second stage planet circular system; Described power coupling mechanism comprises a neutral gear and some individual peripheral gears with neutral gear external toothing; The sun gear of described first step planet circular system is coaxially fixedly connected with neutral gear, the planet carrier of described first step planet circular system is fixedly connected with the sun gear of second stage planet circular system, the planet carrier of described second stage planet circular system is connected with cutting drum, and the gear ring of described first step planet circular system and the 2nd planet circular system is fixedly installed; The Power output end of each quantitative motor of described quantitative groups of motors is coaxially fixedly connected with each peripheral gear respectively.
Further, described coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system and also comprise helper motor, the detector of detection helper motor electric current and detect the motor rotary speed sensor of quantitative motor rotary speed, described gear train assembly comprises power coupling mechanism, first step planet circular system and second stage planet circular system, and described power coupling mechanism comprises a planet circular system, the peripheral gear of some gear ring external toothings with planet circular system and the stopper of the mechanism's gear ring that is coupled for brake power;
The sun gear of described power coupling mechanism is fixedly connected with the rotor coaxial of helper motor, and each peripheral gear of described power coupling mechanism is coaxially fixedly connected with the Power output end of each quantitative motor of quantitative groups of motors;The planet carrier of described power coupling mechanism is fixedly connected with the sun gear of first step planet circular system, the planet carrier of described first step planet circular system is fixedly connected with the sun gear of second stage planet circular system, the planet carrier of described second stage planet circular system is connected with cutting drum, and the gear ring of described first step planet circular system and the 2nd planet circular system is fixedly installed;
Described treater also for: when hydraulic power actuating system normal operation, the force value that the tachometer value detected according to motor rotary speed sensor and pressure transmitter detect calculates hydraulic power actuating system real power, calculate helper motor real power according to the current value that detector detects, and calculate cutting unit real output value further;
Described treater also for: when hydraulic power actuating system lost efficacy, calculate the real power of helper motor according to the detected value of detector, and judge that the real power of helper motor is whether near setting power; Described controller was also for sending cut out signal when hydraulic power actuating system loses efficacy to cutting motor, and the judged result control helper motor according to treater runs with setting power.
Further, described coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system and also comprise assist motor, be arranged on fine filter and energy storage between repairing check valve, the constant pressure pressure-reducing valve being arranged between energy storage with repairing check valve, is arranged on the switch-valve being connected on assist motor and energy storage oil circuit and according to the pressure relay of pressure-controlling repairing motor in energy storage; The Power output end of described assist motor is coaxially fixedly connected with neutral gear.
Further, described pump group is variable volume pump group;
Further, described coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system and also comprise the frequency transformer for controlling cutting motor rotating speed, and described pump group is pump of constant delivery type group.
Further, described control valve group comprises some two-bit triplet liquid controlled reversing valves of each pump discharge oil circuit in control pump group, controls some two-bit triplet liquid controlled reversing valves of each quantitative motor inlet oil circuit in quantitative groups of motors and control two four-way electromagnetic reversing valves of each two-bit triplet liquid controlled reversing valve; Described two four-way electromagnetic reversing valves are electrically connected with described controller.
Further, in described control pump group, the two-bit triplet liquid controlled reversing valve of each pump discharge oil circuit is guiding valve or cartridge valve with the two-bit triplet liquid controlled reversing valve of each quantitative motor inlet oil circuit in the quantitative groups of motors of control.
The present invention's a kind of coalcutter high reliability mechanical electronic hydraulic short distance cuts the control method cutting transmission system, comprises the following steps:
The first step: by data collector acquired signal, and the signal input processor that will gather;
2nd step: the real output being calculated winning machine cutting part by treater according to the signal that data collector inputs, and judge real output whether near cutting unit setting power; The signal inputted according to data collector by treater and pulling speed and cutting drum rotating speed best correspondence calculate best cutting drum tachometer value, and judge that whether cutting drum tachometer value that drum rotational speed sensor detects is close to the best cutting drum tachometer value calculated;
3rd step: when the real output of winning machine cutting part is bigger than normal or less than normal in cutting unit setting power, controls shearer haulage mechanism by controller and regulates pulling speed, make the real output of winning machine cutting part remain near setting power; When the cutting drum tachometer value that drum rotational speed sensor detects bigger than normal or less than normal in the best cutting drum tachometer value calculated time, the discharge capacity of pump group or the rotating speed of cutting motor is controlled, so that cutting drum actual speed equals the best cutting drum rotating speed calculated by controller.
The useful effect of the present invention:
1, coalcutter high reliability mechanical electronic hydraulic short distance of the present invention is cut and is cut transmission system and control method, hydraulic power actuating system is adopted to transmit power, achieving short distance transmission, transmission system can be avoided because heavy duty rocking arm distortion produces to destroy, and its reliability is higher relative to conventional motors gear train assembly.
2, coalcutter high reliability mechanical electronic hydraulic short distance of the present invention is cut and is cut transmission system and control method, shearer haulage speed and cutting drum rotating speed can be regulated by respectively, the output rating of winning machine cutting part is made to remain near setting power, pulling speed and cutting drum rotating speed is made to remain near optimum proportion, cutting drum can be made to cut by reasonable thickness of cutting in cutting course, given play to complete machine maximum cut the ability of effect of cutting.
3, coalcutter high reliability mechanical electronic hydraulic short distance of the present invention is cut and is cut transmission system and control method, and the relative conventional motors gear train assembly of its hydraulic power actuating system adopted has more preferably shock resistance.
4, coalcutter high reliability mechanical electronic hydraulic short distance of the present invention is cut and is cut transmission system and control method, and many pumps multi-motor system that it adopts can fall power continuation work when certain element lost efficacy, and the reliability of transmission system improves further.
Accompanying drawing explanation
Fig. 1 is that in embodiment one, coalcutter high reliability mechanical electronic hydraulic short distance cuts the structural plan cutting transmission system;
Fig. 2 is the schematic diagram that in embodiment one, coalcutter high reliability mechanical electronic hydraulic short distance cuts the hydraulic efficiency system cutting transmission system;
Fig. 3 is the schematic diagram of pump in embodiment one;
Fig. 4 is the schematic diagram of embodiment one middle gear transmission system;
Fig. 5 is the structural representation of power coupling mechanism in embodiment one;
Fig. 6 is that in embodiment two, coalcutter high reliability mechanical electronic hydraulic short distance cuts the structural plan cutting transmission system;
Fig. 7 is the schematic diagram of embodiment two middle gear transmission system;
Fig. 8 is the structural representation of power coupling mechanism in embodiment two;
Fig. 9 is that in embodiment three, coalcutter high reliability mechanical electronic hydraulic short distance cuts the structural plan cutting transmission system;
Figure 10 is that in embodiment four, coalcutter high reliability mechanical electronic hydraulic short distance cuts the structural plan cutting transmission system;
Figure 11 is the schematic diagram that in embodiment five, coalcutter high reliability mechanical electronic hydraulic short distance cuts the hydraulic efficiency system cutting transmission system.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment one, as shown in Figure 1, a kind of coalcutter high reliability mechanical electronic hydraulic short distance of the present embodiment is cut and is cut transmission system, comprises cutting motor 2, hydraulic power actuating system, gear train assembly 7, cutting drum 6, controller 4.1, data collector and treater 4.2; In the present embodiment, cutting motor 2, hydraulic power actuating system and gear train assembly 7 are arranged in housing 12, and controller 4.1 and treater 4.2 are arranged in electric control box 4;
The power input hydraulic transmission system of described cutting motor 2, the power input gear transmission system 7 of described hydraulic power actuating system, the power input cutting drum 6 of described gear train assembly 7;
In the present embodiment, described data collector comprises the drum rotational speed sensor 8 of detection cutting drum rotating speed, the pressure transmitter 11 of detection hydraulic power actuating system operating pressure and the velocity sensor 5 of detection shearer haulage speed;
Described treater 4.2 is electrically connected with controller 4.1, and treater 4.2 is also electrically connected with drum rotational speed sensor 8, pressure transmitter 11 and velocity sensor 5;
Described treater 4.2 is for cutting drum tachometer value that the hydraulic power actuating system operating pressure value detected according to described pressure transmitter 11 and described drum rotational speed sensor 8 detect, calculate winning machine cutting part real output value, and judge cutting unit real output value whether near setting power; The pulling speed value detected according to velocity sensor 5 and pulling speed and cutting drum rotating speed best correspondence calculate best cutting drum tachometer value, and judge that whether cutting drum tachometer value that drum rotational speed sensor 8 detects is close to the best cutting drum tachometer value calculated;
Described controller 4.1 for controlling described pulling speed and the speed of described cutting drum according to the judged result of described treater 4.2.
In the present embodiment, described hydraulic power actuating system comprises master loop and subsidiary loop 1; Described master loop comprises the closed circuit being made up of pump group 13, quantitative groups of motors 9 and control valve group 10 (in the present embodiment, described pump group 13 is variable volume pump, it comprises two pumps 13.1,13.2, described quantitative groups of motors 9 comprises four quantitative motors 9.1,9.2,9.3,9.4, and in concrete enforcement, the quantity of pump and quantitative motor also can increase and decrease as required); Described subsidiary loop 1 comprises heat exchange loop and repairing loop, described heat exchange loop is composed in series by back pressure valve 1.8, water cooler 1.6 and back pressure check valve 1.5, the part high-temperature oil liquid of described master loop is back to fuel tank 1.4 through back pressure valve 1.8, water cooler 1.6, back pressure check valve 1.5, and heat-exchanging loop is for carrying out heat exchange to system; Repairing loop is made up of repairing motor 1.7, the motor-driven repairing pump 1.2 of repairing, fuel tank 1.4, the coarse filter 1.3 being arranged on repairing pump 1.2 entrance, the fine filter 1.10 being arranged on repairing pump discharge, the repairing check valve 1.9 being arranged in series in repairing loop and surplus valve 1.1; System is carried out repairing by repairing loop, and surplus valve 1.1 is for setting up the operating pressure of repairing pump 1.2.
In the present embodiment, described control valve group 10 comprises two two-bit triplet liquid controlled reversing valves 10.25 and 10.26 of each pump discharge oil circuit in control pump group 13, four the two-bit triplet liquid controlled reversing valves 10.21,10.22,10.23,10.24 controlling each quantitative motor inlet oil circuit in quantitative groups of motors 9 and six two four-way electromagnetic reversing valves 10.11,10.12,10.13,10.14,10.15,10.16 controlling each two-bit triplet liquid controlled reversing valve; Described each two-bit triplet liquid controlled reversing valve is guiding valve, and described two four-way electromagnetic reversing valves are electrically connected with described controller 4.1.
In the present embodiment, subsidiary loop 1 can be combined closely with the existing rocking arm hydraulic efficiency system of coalcutter, and in master loop, guide's pressure of control valve group 10 also can be provided by rocking arm hydraulic efficiency system, and X connects high pressure side, and Y connects oil return box.
In the present embodiment, described gear train assembly comprises power coupling mechanism, first step planet circular system 7.6 and second stage planet circular system 7.7; Described power coupling mechanism comprises a neutral gear 7.5 and four peripheral gear 7.1,7.2,7.3 and 7.4 with neutral gear external toothing; The sun gear of described first step planet circular system 7.6 is coaxially fixedly connected with neutral gear 7.5, the planet carrier of described first step planet circular system 7.6 is fixedly connected with the sun gear of second stage planet circular system 7.7, the planet carrier of described second stage planet circular system 7.7 is connected with cutting drum 6, and the gear ring of described first step planet circular system 7.6 and the 2nd planet circular system 7.7 is fixedly installed on housing 12; The Power output end of each quantitative motor of described quantitative groups of motors 9 is coaxially fixedly connected with each peripheral gear respectively.
The present embodiment coalcutter high reliability mechanical electronic hydraulic short distance cuts the control method cutting transmission system, comprises the following steps:
The first step: by data collector acquired signal, it is specially: drum rotational speed sensor 8 gathers the tach signal of cutting drum, pressure transmitter 11 gathers the operating pressure signal of hydraulic power actuating system and velocity sensor 5 gathers the pulling speed signal of coalcutter, and the signal input processor 4.2 that will gather;
2nd step: the tach signal of the cutting drum inputted according to data collector by treater 4.2 and pulling speed signal calculate the real output of winning machine cutting part, and judge real output whether near cutting unit setting power; The pulling speed signal inputted according to data collector by treater 4.2 and pulling speed and cutting drum rotating speed best correspondence calculate best cutting drum tachometer value, and judge that whether cutting drum tachometer value that drum rotational speed sensor detects is close to the best cutting drum tachometer value calculated;
3rd step: when the real output of winning machine cutting part is bigger than normal or less than normal in cutting unit setting power, controls shearer haulage mechanism 3 by controller 4.1 and regulate pulling speed, make the real output of winning machine cutting part remain near setting power; When the cutting drum tachometer value that drum rotational speed sensor 8 detects bigger than normal or less than normal in the best cutting drum tachometer value calculated time, the discharge capacity (becoming discharge capacity volumetric speed control) of pump group 13 is controlled, so that the actual speed of cutting drum 6 is close to the best cutting drum rotating speed calculated by controller 4.1.
The structure cutting transmission system and control method is cut from the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance, cutting in the present embodiment is cut transmission system and is adopted hydraulic power actuating system to transmit power, achieve short distance transmission, transmission system can be avoided because heavy duty rocking arm distortion produces to destroy, and its reliability is higher relative to conventional motors gear train assembly; Shearer haulage speed and cutting drum rotating speed can be regulated by respectively, can make that the output rating of winning machine cutting part remains near setting power, pulling speed and cutting drum rotating speed remain near optimum proportion, cutting drum can be made to cut by reasonable thickness of cutting in cutting course, given play to complete machine maximum cut the ability of effect of cutting; And the relative conventional motors gear train assembly of its hydraulic power actuating system adopted has more preferably shock resistance.
Being worth being pointed out that, the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system and control method, many pumps multi-motor system that it adopts, and sends signal control valve group 10 by controller 4.1 and disconnects contacting of failed element and hydraulic power actuating system; Meanwhile, controller 4.1, according to failed element power proportion corresponding adjustment cutting unit setting power value in working process, makes transmission system can fall power and continues to run, and the reliability of transmission system improves further. Such as pump 13.1 lost efficacy, controller 4.1 send signal make magnetic valve 10.15 electric thus make reversing valve 10.25 right position work, pump 13.1 oil outlet is directly connected with fuel tank 1.4, do not participate in work, it is that rated output 1/2nd is (under transmission system normal operation that controller 4.1 adjusts cutting unit setting power value, cutting unit setting power is its rated output value), namely system continues to run with the half value of rated output.
Embodiment two: the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and cut transmission system is in the structural improvement of embodiment one, is specially the present embodiment and cuts relative to the coalcutter high reliability mechanical electronic hydraulic short distance in embodiment one and cut transmission system and add helper motor 14, the detector 15 of detection helper motor electric current and detect the motor rotary speed sensor 16 of quantitative motor rotary speed; Described gear train assembly have also been made improvement relative to embodiment, being specially: described gear train assembly comprises power coupling mechanism, first step planet circular system 7.6 and second stage planet circular system 7.7, described power coupling mechanism comprises a planet circular system, the peripheral gear of some gear ring 7.12 external toothings with planet circular system and the stopper 7.8 of the mechanism's gear ring that is coupled for brake power;
The sun gear 7.10 of described power coupling mechanism is fixedly connected with the rotor coaxial of helper motor 14, and each peripheral gear of described power coupling mechanism is coaxially fixedly connected with the Power output end of each quantitative motor of quantitative groups of motors 9; The planet carrier 7.14 of described power coupling mechanism is fixedly connected with the sun gear of first step planet circular system 7.6, the planet carrier of described first step planet circular system 7.6 is fixedly connected with the sun gear of second stage planet circular system 7.7, the planet carrier of described second stage planet circular system 7.7 is connected with cutting drum 6, and the gear ring of described first step planet circular system 7.6 and the 2nd planet circular system 7.7 is fixedly installed on housing 12;
It is identical with embodiment that the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance cuts other structure cutting transmission system, does not repeat them here.
In the present embodiment, described treater 4.2 also for: when hydraulic power actuating system normal operation, the force value that the tachometer value detected according to motor rotary speed sensor 16 and pressure transmitter 11 detect calculates hydraulic power actuating system real power, the current value detected according to detector 15 calculates the real power of helper motor 14, and calculates the real output value of cutting unit further;
Described treater 4.2 also for: when hydraulic power actuating system lost efficacy, calculate the real power of helper motor 14 according to the detected value of detector 15, and judge that the real power of helper motor 14 is whether near setting power;
Described controller 4.1 was also for sending cut out signal when hydraulic power actuating system loses efficacy to cutting motor 2, and the judged result control helper motor 14 according to treater 4.2 runs with setting power.
The present embodiment coalcutter high reliability mechanical electronic hydraulic short distance cuts the control method cutting transmission system, comprises the following steps:
The first step: by data collector acquired signal, it is specially: motor rotary speed sensor 16 detects the tachometer value of quantitative motor, pressure transmitter 11 detects hydraulic power actuating system force value, detector 15 detect the current value of helper motor 14, and the signal input processor 4.2 that will gather;
2nd step: the tach signal of quantitative motor inputted according to data collector by treater 4.2 and the pressure signal of hydraulic power actuating system calculate the real power of hydraulic efficiency system, calculated the real power of helper motor 14 according to the electric current signal that data collector inputs by treater 4.2, draw the real output of cutting unit according to the above two calculation result simultaneously, and judge that the real output of cutting unit is whether near cutting unit setting power; The pulling speed signal inputted according to data collector by treater 4.2 and pulling speed and cutting drum rotating speed best correspondence calculate best cutting drum tachometer value, and judge that whether cutting drum tachometer value that drum rotational speed sensor 8 detects is close to the best cutting drum tachometer value calculated;
3rd step: when the real output of winning machine cutting part is bigger than normal or less than normal in cutting unit setting power, controls shearer haulage mechanism 3 by controller 4.1 and regulate pulling speed, make the real output of winning machine cutting part remain near setting power; When the cutting drum tachometer value that drum rotational speed sensor 8 detects bigger than normal or less than normal in the best cutting drum tachometer value calculated time, the discharge capacity (becoming discharge capacity volumetric speed control) of pump group 13 is controlled, so that the actual speed of cutting drum 6 is close to the best cutting drum rotating speed calculated by controller 4.1.
The system that the embodiment of the present application two provides, except having the control mode of tackling hydraulic component failures same with example one, also has the control mode tackling whole hydraulic system fails;If hydraulic efficiency system was because when the situation such as leakage of oil or oil contamination lost efficacy, send signal by controller 4.1 and close cutting motor 2, then, detector 15 detected value is processed and can be calculated the real power of helper motor 14 by treater 4.2, judge it whether near rated output, if actual value is less than normal, improve pulling speed, bigger than normal, reduce pulling speed, and then remain that helper motor 14 is with rated power operation; Therefore the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system except having the advantage identical with embodiment one, also add an operating mode driven by helper motor 14 when hydraulic system fails, further increase the reliability of system.
Embodiment three: the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and cut transmission system is in the structural improvement of embodiment one, it is specially the present embodiment to cut relative to the coalcutter high reliability mechanical electronic hydraulic short distance in embodiment one and cut transmission system and add assist motor 17, the energy storage 1.11 being arranged between fine filter 1.10 and repairing check valve 1.9, the constant pressure pressure-reducing valve 1.13 being arranged between energy storage 1.11 and repairing check valve 1.9, it is arranged on the switch-valve 1.14 connected on assist motor 17 and energy storage 1.11 oil circuit and the pressure relay 1.12 according to pressure-controlling repairing motor 1.7 in energy storage 1.11, the Power output end of described assist motor 17 is coaxially fixedly connected with neutral gear 7.5.
It is identical with embodiment one that the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance cuts other structure cutting transmission system, and this is no longer going to repeat them.
The present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system and set up assist motor 17 and mainly cut for coalcutter and provide power-assisted in short-term when cutting hard rock. When cutting unit runs into hard rock, be first that cutting unit provides auxiliarypower by assist motor 17, when assist motor 17 participate in work power also not enough time, close assist motor 17, then by regulating pulling speed, avoid system overcharge. The power of assist motor 17 comes from energy storage 1.11, control by switch-valve 1.14, the fluid of energy storage 1.11 comes from repairing pump 1.2, repairing pump 1.2 is controlled by pressure relay 1.12, ensureing that energy storage 1.11 remains on setting pressure scope, energy storage 1.11 also gives, by constant pressure pressure-reducing valve 1.13, the hydraulic closed-circuit repairing cutting and cutting in transmission system. In assist motor 17 closedown situation, it is identical with embodiment one that the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance cuts the control method cutting transmission system.
Embodiment four, the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and cut transmission system is in the structural improvement of embodiment one, it is specially the present embodiment to cut relative to the coalcutter high reliability mechanical electronic hydraulic short distance in embodiment one and cut transmission system and add the frequency transformer 18 for controlling cutting motor rotating speed 2, and described pump group 13 is pump of constant delivery type group; It is identical with embodiment one that the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance cuts other structure cutting transmission system, and this is no longer going to repeat them. The present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut the difference cutting the control method of transmission system and the control method of embodiment one and is: when the cutting drum tachometer value that drum rotational speed sensor 8 detects bigger than normal or less than normal in the best cutting drum tachometer value calculated time, by control frequency transformer 18, cutting motor 2 is carried out speed adjustment by controller 4.1, so that the actual speed of cutting drum 6 is close to the best cutting drum rotating speed calculated;Other step in control method is identical with embodiment one.
The present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system in working process except having the advantage identical with embodiment one, mainly achieve the change rotating speed volumetric speed control of hydraulic efficiency system, relatively becoming discharge capacity volumetric speed control, the hydraulic power actuating system efficiency under this kind of speed governing mode is higher.
Embodiment five: the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and cut transmission system is in the structural improvement of embodiment one, the two-bit triplet liquid controlled reversing valve being specially in the present embodiment to control each quantitative motor inlet oil circuit in the two-bit triplet liquid controlled reversing valve of each pump discharge oil circuit in pump group 13 and the quantitative groups of motors 9 of control changes to cartridge valve by the guiding valve in embodiment one, guide's oil path high-pressure end of control valve group 10 is connected with master loop, low pressure termination oil return box; It is identical with embodiment one that the present embodiment coalcutter high reliability mechanical electronic hydraulic short distance cuts other structure cut in transmission system, and its control method is also identical with embodiment one simultaneously.
The present embodiment coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system in working process except having the advantage identical with embodiment one, the main advantage also combining cartridge valve: through-flow ability is big, is applicable to coalcutter and cuts the occasion cutting transmission system high-pressure high-flow; Fast response time; The relatively better tightness of guiding valve, reveals little; It is easy to integrated, it is possible to greatly reduce the space that valve group occupies.
What finally illustrate is, above embodiment is only in order to illustrate the technical scheme of the present invention and unrestricted, although with reference to better embodiment to invention has been detailed explanation, it will be understood by those within the art that, the technical scheme of the present invention can be modified or equivalent replacement, and not departing from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of the right of the present invention.
Claims (10)
1. a coalcutter high reliability mechanical electronic hydraulic short distance is cut and is cut transmission system, it is characterised in that: comprise cutting motor, hydraulic power actuating system, gear train assembly, cutting drum, controller, data collector and treater;
The power input hydraulic transmission system of described cutting motor, the power input gear transmission system of described hydraulic power actuating system, the power input cutting drum of described gear train assembly;
Described data collector comprises the drum rotational speed sensor of detection cutting drum rotating speed, the pressure transmitter of detection hydraulic power actuating system operating pressure and the velocity sensor of detection shearer haulage speed;
Described treater is electrically connected with controller, and treater is also electrically connected with drum rotational speed sensor, pressure transmitter and velocity sensor;
Described treater is used for: the cutting drum tachometer value that the hydraulic power actuating system operating pressure value detected according to described pressure transmitter and described drum rotational speed sensor detect, calculate winning machine cutting part real output value, and judge cutting unit real output value whether near setting power; The pulling speed value detected according to velocity sensor and pulling speed and cutting drum rotating speed best correspondence calculate best cutting drum tachometer value, and judge that whether cutting drum tachometer value that drum rotational speed sensor detects is close to the best cutting drum tachometer value calculated;
Described controller is used for the judged result according to described treater and controls described pulling speed and described cutting drum rotating speed.
2. coalcutter high reliability mechanical electronic hydraulic short distance according to claim 1 is cut and is cut transmission system, it is characterised in that: described hydraulic power actuating system comprises master loop and subsidiary loop;Described master loop comprises the closed circuit being made up of pump group, quantitative groups of motors and control valve group; Described subsidiary loop comprises heat exchange loop and repairing loop, and described heat exchange loop is composed in series by back pressure valve, water cooler and back pressure check valve, and the part high-temperature oil liquid of described master loop is back to fuel tank through back pressure valve, water cooler, back pressure check valve; Repairing loop is made up of repairing motor, the motor-driven repairing pump of repairing, fuel tank, the coarse filter being arranged on repairing pump intake, the fine filter being arranged on repairing pump discharge, the repairing check valve being arranged in series in repairing loop and surplus valve.
3. coalcutter high reliability mechanical electronic hydraulic short distance according to claim 2 is cut and is cut transmission system, it is characterised in that: described gear train assembly comprises power coupling mechanism, first step planet circular system and second stage planet circular system; Described power coupling mechanism comprises a neutral gear and some individual peripheral gears with neutral gear external toothing; The sun gear of described first step planet circular system is coaxially fixedly connected with neutral gear, the planet carrier of described first step planet circular system is fixedly connected with the sun gear of second stage planet circular system, the planet carrier of described second stage planet circular system is connected with cutting drum, and the gear ring of described first step planet circular system and second stage planet circular system is fixedly installed; The Power output end of each quantitative motor of described quantitative groups of motors is coaxially fixedly connected with each peripheral gear respectively.
4. coalcutter high reliability mechanical electronic hydraulic short distance according to claim 1 is cut and is cut transmission system, it is characterized in that: also comprise helper motor, detect the detector of helper motor electric current and detect the motor rotary speed sensor of quantitative motor rotary speed, described gear train assembly comprises power coupling mechanism, first step planet circular system and second stage planet circular system, and described power coupling mechanism comprises a planet circular system, the peripheral gear of some gear ring external toothings with planet circular system and the stopper of the mechanism's gear ring that is coupled for brake power;
The sun gear of described power coupling mechanism is fixedly connected with the rotor coaxial of helper motor, and each peripheral gear of described power coupling mechanism is coaxially fixedly connected with the Power output end of each quantitative motor of quantitative groups of motors; The planet carrier of described power coupling mechanism is fixedly connected with the sun gear of first step planet circular system, the planet carrier of described first step planet circular system is fixedly connected with the sun gear of second stage planet circular system, the planet carrier of described second stage planet circular system is connected with cutting drum, and the gear ring of described first step planet circular system and second stage planet circular system is fixedly installed;
Described treater also for: when hydraulic power actuating system normal operation, the force value that the tachometer value detected according to motor rotary speed sensor and pressure transmitter detect calculates hydraulic power actuating system real power, calculate helper motor real power according to the current value that detector detects, and calculate cutting unit real output value further;
Described treater also for: when hydraulic power actuating system lost efficacy, calculate the real power of helper motor according to the detected value of detector, and judge that the real power of helper motor is whether near setting power; Described controller was also for sending cut out signal when hydraulic power actuating system loses efficacy to cutting motor, and the judged result control helper motor according to treater runs with setting power.
5. coalcutter high reliability mechanical electronic hydraulic short distance according to claim 3 is cut and is cut transmission system, it is characterized in that: also comprise assist motor, be arranged on fine filter and energy storage between repairing check valve, the constant pressure pressure-reducing valve that is arranged between energy storage with repairing check valve, it is arranged on the switch-valve being connected on assist motor and energy storage oil circuit and according to the pressure relay of pressure-controlling repairing motor in energy storage, the Power output end of described assist motor is coaxially fixedly connected with neutral gear.
6. coalcutter high reliability mechanical electronic hydraulic short distance according to claim 2 is cut and is cut transmission system, it is characterised in that: described pump group is variable volume pump group.
7. coalcutter high reliability mechanical electronic hydraulic short distance according to claim 2 is cut and is cut transmission system, it is characterised in that: also comprise the frequency transformer for controlling cutting motor rotating speed; Described pump group is pump of constant delivery type group.
8. coalcutter high reliability mechanical electronic hydraulic short distance according to claim 2 is cut and is cut transmission system, it is characterised in that: described control valve group comprises some two-bit triplet liquid controlled reversing valves of each pump discharge oil circuit in control pump group, controls some two-bit triplet liquid controlled reversing valves of each quantitative motor inlet oil circuit in quantitative groups of motors and control two four-way electromagnetic reversing valves of each two-bit triplet liquid controlled reversing valve; Described two four-way electromagnetic reversing valves are electrically connected with described controller.
9. coalcutter high reliability mechanical electronic hydraulic short distance according to claim 8 is cut and is cut transmission system, it is characterised in that: in described control pump group, the two-bit triplet liquid controlled reversing valve of each pump discharge oil circuit is guiding valve or cartridge valve with the two-bit triplet liquid controlled reversing valve of each quantitative motor inlet oil circuit in the quantitative groups of motors of control.
10. described in a claim 2, coalcutter high reliability mechanical electronic hydraulic short distance cuts the control method cutting transmission system, it is characterised in that: comprise the following steps:
The first step: by data collector acquired signal, and the signal input processor that will gather;
2nd step: the real output being calculated winning machine cutting part by treater according to the signal that data collector inputs, and judge real output whether near cutting unit setting power; The signal inputted according to data collector by treater and pulling speed and cutting drum rotating speed best correspondence calculate best cutting drum tachometer value, and judge that whether cutting drum tachometer value that drum rotational speed sensor detects is close to the best cutting drum tachometer value calculated;
3rd step: when the real output of winning machine cutting part is bigger than normal or less than normal in cutting unit setting power, controls shearer haulage mechanism by controller and regulates pulling speed, make the real output of winning machine cutting part remain near setting power; When the cutting drum tachometer value that drum rotational speed sensor detects bigger than normal or less than normal in the best cutting drum tachometer value calculated time, the discharge capacity of pump group or the rotating speed of cutting motor is controlled, so that cutting drum actual speed equals the best cutting drum rotating speed calculated by controller.
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| CN104455224A (en) * | 2014-11-13 | 2015-03-25 | 重庆大学 | Coal cutter infinitely-variable-speed cutting transmission system based on rotation speed coupling |
| CN104695957B (en) * | 2015-02-15 | 2016-06-15 | 山东科技大学 | A kind of coal mining machine roller Automatic Height-Adjusting System and method of work thereof |
| CN105422094B (en) * | 2015-11-16 | 2017-12-19 | 中国矿业大学 | A kind of direct drive type hydraulic transmission coal-winning machine cutting drum height-adjusting system and method |
| CN105738103B (en) * | 2016-02-26 | 2018-08-17 | 重庆大学 | A kind of advanced cutting transmission system exploitation test platform of drum shearer |
| CN105863632B (en) * | 2016-06-14 | 2018-02-02 | 株洲中车时代电气股份有限公司 | A kind of control method and system of the frequency converter fluid drive of boom-type roadheader cut |
| CN106089202B (en) * | 2016-08-22 | 2018-03-16 | 西安科技大学 | Coal mining machine in full-mechanized mining face Automatic Height-Adjusting method based on current monitoring |
| CN106351656A (en) * | 2016-10-21 | 2017-01-25 | 南京六合佳源矿山设备有限公司 | Cutting part of stepless speed changing coal cutter based on hydraulic closed transmission system |
| CN108952711B (en) * | 2018-08-23 | 2024-05-28 | 江苏中机矿山设备有限公司 | Coal cutter capable of smoothly cutting hard coal rock and coal mining method |
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Effective date of registration: 20210609 Address after: 402460 No.288, Rongdian Road, Guangshun street, Rongchang District, Chongqing Patentee after: CHONGQING YONGRONG MACHINERY MANUFACTURING Co.,Ltd. Address before: 400044 No. 174 Sha Jie street, Shapingba District, Chongqing Patentee before: Chongqing University |