CN114087245A - Hydraulic control system of cone crusher and control method thereof - Google Patents
Hydraulic control system of cone crusher and control method thereof Download PDFInfo
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- CN114087245A CN114087245A CN202111436866.3A CN202111436866A CN114087245A CN 114087245 A CN114087245 A CN 114087245A CN 202111436866 A CN202111436866 A CN 202111436866A CN 114087245 A CN114087245 A CN 114087245A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to the technical field of cone crushers, in particular to a hydraulic control system of a cone crusher and a control method thereof, which are characterized in that: the hydraulic oil tank is used for converting hydraulic oil in the hydraulic oil tank into pressure oil and respectively supplying the pressure oil to the discharge hole adjusting circuit through a main oil inlet circuit, the upper frame lifting circuit and the wedge-shaped clamping circuit are connected with the hydraulic oil tank through main oil return circuits, the discharge hole adjusting circuit is used for controlling the action of the hydraulic motor, the upper frame lifting circuit is used for controlling the action of the hydraulic cylinder, and the wedge-shaped clamping circuit is used for controlling the action of the hydraulic cylinder. The cone crusher has the advantages of simpler overall structure, convenience in operation and lower failure rate, and effectively ensures the long-time stable operation of the cone crusher.
Description
Technical Field
The invention relates to the technical field of cone crushers, in particular to a hydraulic control system of a cone crusher and a control method thereof.
Background
In the working process of the cone crusher, the motor drives the eccentric cone to rotate through a triangular belt, a belt wheel, a bevel gear and other transmission devices. Because of the eccentric effect of eccentric cone, make the movable cone of cone crusher surround the central line and be close to occasionally, keep away from the fixed cone occasionally, the material constantly receives the impact in broken chamber, extrusion and bending action, thereby realize broken operation, current cone crusher mainly has the bowl shape tile cone crusher that floats, spiral cone crusher and the head cone crusher that floats, spiral cone crusher is also known as multicylinder cone crusher, because its current multicylinder cone crusher's hydraulic control system is comparatively complicated, break down easily and lead to equipment to shut down, the long-time reliable and stable operation of unable fine assurance multicylinder cone crusher.
Disclosure of Invention
The invention aims to provide a hydraulic control system of a cone crusher and a control method thereof, wherein the hydraulic control system has a simpler overall structure, is convenient to operate, has a lower failure rate, and effectively ensures long-time stable operation of the cone crusher.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a cone crusher's hydraulic control system, including hydraulic tank, the fuel feeding subassembly, the bin outlet control circuit, go up frame lift circuit, the wedge presss from both sides tight return circuit, press from both sides tight pneumatic cylinder, hydraulic cylinder and regulation hydraulic motor, the fuel feeding subassembly is used for changing the hydraulic oil in the hydraulic tank into pressure oil and supplies respectively to the bin outlet control circuit through main oil inlet way, go up frame lift circuit and wedge press from both sides tight return circuit, the bin outlet control circuit, go up frame lift circuit and wedge press from both sides tight return circuit and still all be connected with the hydraulic tank through main oil return way, the bin outlet control circuit is used for controlling the action of regulation hydraulic motor, go up frame lift circuit and be used for controlling hydraulic cylinder's action, wedge presss from both sides tight return circuit and is used for controlling the action of pressing from both sides tight pneumatic cylinder.
Furthermore, the discharge port regulating circuit comprises a first three-position four-way electromagnetic directional valve, the main oil inlet path is connected with an oil inlet of the first three-position four-way electromagnetic directional valve through a first branch oil inlet path, two oil outlets of the first three-position four-way electromagnetic directional valve are respectively connected with two oil ports of the regulating hydraulic motor through a first oil outlet path and a second oil outlet path, and an oil return port of the first three-position four-way electromagnetic directional valve is connected with the main oil return path through a first branch oil return path.
Furthermore, a brake is arranged on the adjusting hydraulic motor, a shuttle valve is connected between the first oil outlet oil way and the second oil outlet oil way, and an oil outlet of the shuttle valve is communicated with an oil inlet of the brake.
Furthermore, the upper frame lifting loop comprises a second three-position four-way electromagnetic directional valve, a plurality of lifting hydraulic cylinders are arranged in parallel, a main oil inlet path is connected with an oil inlet of the second three-position four-way electromagnetic directional valve through a second branch oil inlet path, two oil outlets of the second three-position four-way electromagnetic directional valve are respectively connected with a rodless cavity oil port and a rod cavity oil port on the lifting hydraulic cylinder through a third oil outlet path and a fourth oil outlet path, a first pilot-operated one-way valve is arranged on the third oil outlet path, the first pilot-operated one-way valve is connected with the fourth oil outlet path through a first throttle valve, a second pilot-operated one-way valve is arranged on the fourth oil outlet path, the second pilot-operated one-way valve is connected with the third oil outlet path through a second throttle valve, and an oil return port of the second three-position four-way electromagnetic directional valve is connected with the main oil return path through a second branch oil return path.
Furthermore, the upper frame lifting loop further comprises an energy accumulator, a first overflow valve and a first two-position on-off electromagnetic valve, wherein one energy accumulator is arranged between every two lifting hydraulic cylinders, the energy accumulator is connected with a fourth oil outlet path, the fourth oil outlet path is connected with the main oil return path through the first overflow valve, and the fourth oil outlet path is further connected with the main oil return path through the first two-position on-off electromagnetic valve.
Furthermore, the wedge-shaped clamping loop comprises a second two-position on-off solenoid valve, a third two-position on-off solenoid valve, a fourth two-position on-off solenoid valve, a first check valve and a second overflow valve, a main oil inlet path is connected with an oil inlet of the second two-position on-off solenoid valve through a third branch oil inlet path, a plurality of clamping hydraulic cylinders are connected in series through a first annular oil path, an oil outlet of the second two-position on-off solenoid valve is connected with a first annular oil path through a fifth oil outlet path, a first check valve is arranged on the fifth oil outlet path, the fifth oil outlet path is connected with a main oil return path through the third two-position on-off solenoid valve, and the fifth oil outlet path is further connected with the main oil return path through the fourth two-position on-off solenoid valve and the second overflow valve in sequence.
Furthermore, the wedge-shaped clamping loop further comprises a third overflow valve, and the fifth oil outlet oil way is further connected with the main oil return way through the third overflow valve.
Furthermore, the anti-rotation hydraulic motor is further included, two oil ports of the anti-rotation hydraulic motor are connected through a second annular oil way, a second one-way valve is arranged on the second annular oil way, a fourth overflow valve arranged in parallel with the second one-way valve is further connected onto the second annular oil way, the main oil inlet way is connected with the second annular oil way through a fourth branch oil inlet way, and a pressure reducing valve is arranged on the fourth branch oil inlet way.
Furthermore, a first filter is arranged on the main oil inlet path, a second filter is arranged on the main oil return path, the main oil inlet path is connected with the main oil return path through a fifth overflow valve, and the main oil inlet path is also connected with the main oil return path through a fifth two-position on-off solenoid valve.
A control method of a hydraulic control system of a cone crusher utilizes the hydraulic control system of any one of the circumference crushers, comprises the following steps of lifting control of an upper frame, size adjustment control of a discharge opening and iron passing release control of a crushing cavity:
lifting control of the upper frame:
controlling one side of the second three-position four-way electromagnetic directional valve to be electrified, communicating a second branch oil inlet path with a third oil outlet path, and communicating a fourth oil outlet path with a second branch oil return path, wherein at the moment, pressure oil provided by the oil supply assembly enters a rodless cavity of the lifting hydraulic cylinder, and meanwhile, the pressure oil in a rod cavity of the lifting hydraulic cylinder flows back to a hydraulic oil tank, and at the moment, the lifting hydraulic cylinder extends, so that the upper frame can ascend;
controlling the other side of the second three-position four-way electromagnetic directional valve to be electrified, communicating a second branch oil inlet path with a fourth oil outlet path, and communicating a third oil outlet path with a second branch oil return path, wherein at the moment, pressure oil provided by the oil supply assembly enters a rod cavity of the lifting hydraulic cylinder, and meanwhile, the pressure oil in a rodless cavity of the lifting hydraulic cylinder flows back to a hydraulic oil tank, and at the moment, the lifting hydraulic cylinder retracts, so that the upper frame can descend;
adjusting and controlling the size of a discharge opening:
before the cone crusher runs, controlling a third two-position on-off solenoid valve to be electrified and communicating a fifth oil outlet oil path with a main oil return path so as to reduce the pressure in a wedge-shaped clamping loop to zero, then controlling the electrification of a first three-position four-way electromagnetic reversing valve, supplying pressure oil provided by an oil supply assembly to a regulating hydraulic motor, rotating the regulating hydraulic motor to drive a filter cup to rotate, adjusting a gap between a lining plate of the filter cup and a lining plate of a movable cone so as to realize the size regulation of a discharge port, controlling the third two-position on-off solenoid valve to be deenergized and controlling a second two-position on-off solenoid valve to be electrified after the regulation is finished, so as to recharge a clamping hydraulic cylinder, and tightly jacking a locking ring so as to keep the size of the discharge port stable;
when the cone crusher runs, the fourth two-position on-off solenoid valve is controlled to be powered on, the fifth oil outlet oil path is communicated with the main oil return path through the second overflow valve, so that the pressure in the wedge-shaped clamping loop is kept at 62Bar, then the first three-position four-way electromagnetic reversing valve is controlled to be powered on, at the moment, pressure oil provided by the oil supply assembly is supplied to the regulating hydraulic motor, the regulating hydraulic motor is enabled to rotate, the filter cup is driven to rotate, the gap between the filter cup lining plate and the movable cone lining plate is adjusted, the size of the discharge port is adjusted, after the adjustment is completed, the fourth two-position on-off solenoid valve is controlled to be powered off, the second two-position solenoid valve is controlled to be powered on, so that the clamping hydraulic cylinder is recharged, and the locking ring is tightly pressed, so that the size of the discharge port is kept stable;
and (3) iron passing release control of the crushing cavity:
when uncrushable materials enter the crushing cavity, the energy accumulator absorbs impact, hydraulic oil in a rod cavity of the lifting hydraulic cylinder is pushed into the energy accumulator, at the moment, the lifting hydraulic cylinder extends and enables the upper frame to rise temporarily, so that the uncrushable materials are discharged, and then under the action of the energy accumulator, the lifting hydraulic cylinder retracts again and enables the upper frame to return to a normal position.
The hydraulic control system of the cone crusher has the advantages that the overall structure is simpler, the operation is convenient, the fault rate is lower, and the long-time stable operation of the cone crusher is effectively ensured; the first three-position four-way electromagnetic reversing valve can be conveniently controlled to be electrified, at the moment, pressure oil provided by the oil supply assembly is supplied to the regulating hydraulic motor and drives the regulating hydraulic motor to rotate forwards or backwards, and the filter cup is driven to rotate forwards or backwards through meshing transmission of the small gear and the large gear, so that the gap between the lining plate of the filter cup and the moving cone lining plate is increased or reduced, and the size of the discharge port is conveniently adjusted; when one side of the second three-position four-way electromagnetic reversing valve is controlled to be electrified, the second branch oil inlet circuit is communicated with the third oil outlet circuit, and the fourth oil outlet circuit is communicated with the second branch oil return circuit, pressure oil provided by the oil supply assembly enters the rodless cavity of the lifting hydraulic cylinder, meanwhile, the pressure oil in the rod cavity of the lifting hydraulic cylinder flows back to the hydraulic oil tank, at the same time, the lifting hydraulic cylinder extends, so that the upper frame can ascend, when the other side of the second three-position four-way electromagnetic reversing valve is controlled to be electrified, the second branch oil inlet circuit is communicated with the fourth oil outlet circuit, and the third oil outlet circuit is communicated with the second branch oil return circuit, at the same time, the pressure oil provided by the oil supply assembly enters the rod cavity of the lifting hydraulic cylinder, meanwhile, the pressure oil in the rodless cavity of the lifting hydraulic cylinder flows back to the hydraulic oil tank, at the same time, the lifting hydraulic cylinder retracts, thereby, the upper frame can be lowered; through the arrangement of the energy accumulator, the upper frame lifting loop also has the function of iron passing release, when uncrushable materials enter a crushing cavity of the cone crusher, the energy accumulator absorbs impact, hydraulic oil in a rod cavity of the lifting hydraulic cylinder is pushed into the energy accumulator, at the moment, the lifting hydraulic cylinder extends and enables the upper frame to rise temporarily, so that the uncrushable materials are discharged, and then, under the action of the energy accumulator, the lifting hydraulic cylinder retracts again and enables the upper frame to return to a normal position; through the setting of anti-rotation hydraulic motor, before the broken chamber is not fed and is broken, because the setting of second check valve, make hydraulic oil can't carry out anticlockwise flow in second annular oil circuit, make anti-rotation hydraulic motor can not rotate from this, in order to play the effect of stopper, and through corresponding coupling mechanism, thereby ensure to move the cone and can not rotate before the breakage begins, avoid moving the cone welt unnecessary wearing and tearing to appear, and in broken process, anti-rotation hydraulic motor will make the cone slowly clockwise rotation, anti-rotation hydraulic motor can follow and move the cone and carry out clockwise rotation promptly, and hydraulic oil will carry out the instantaneous flow in second annular oil circuit through the second check valve that opens.
Drawings
Fig. 1 is a schematic structural view of a hydraulic control system of a cone crusher according to the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.
Fig. 4 is a partially enlarged schematic view of C in fig. 1.
Fig. 5 is an enlarged partial view of fig. 1 at D.
Fig. 6 is a partially enlarged schematic view of fig. 1 at E.
Fig. 7 is a partially enlarged schematic view of F in fig. 1.
In the figure: 1-a hydraulic oil tank; 2-an oil supply assembly; 3-a discharge port regulating loop; 31-regulating the hydraulic motor; 32-a first three-position four-way electromagnetic directional valve; 33-a first branch oil inlet path; 34-a first oil outlet path; 35-a second oil outlet path; 36-first branch return; 37-a brake; 38-a shuttle valve; 4-an upper frame lifting loop; 41-a lifting hydraulic cylinder; 42-a second three-position four-way electromagnetic directional valve; 43-a second branch oil inlet; 44-a third oil outlet path; 45-a fourth oil outlet path; 461-first pilot operated check valve; 462-a first throttle valve; 463-a second pilot operated check valve; 464-a second throttle valve; 47-second branch return; 481 — an accumulator; 482-a first relief valve; 483-a first two-position on-off solenoid valve; 5-a wedge clamping loop; 51-a clamping hydraulic cylinder; 521-a second two-position on-off electromagnetic valve; 522-a third two-position on-off solenoid valve; 523-fourth two-position on-off solenoid valve; 53-a first one-way valve; 54-a second relief valve; 55-a third branch oil inlet path; 56-first annular oil passage; 57-a fifth oil outlet path; 58-third relief valve; 61-a main oil inlet path; 62-main return; 71-anti-rotation hydraulic motor; 72-second annular oil passage; 73-a second one-way valve; 74-a fourth overflow valve; 75-a fourth branch oil inlet path; 76-a pressure relief valve; 81-a first filter; 82-a second filter; 91-a fifth overflow valve; 92-fifth two-position on-off solenoid valve.
Detailed Description
The invention is further described below by means of specific embodiments.
As shown in fig. 1 to 7, the hydraulic control system of a cone crusher according to the present invention includes a hydraulic oil tank 1, an oil supply assembly 2, a discharge opening adjusting circuit 3, an upper frame lifting circuit 4, a wedge clamping circuit 5, a clamping hydraulic cylinder 51, a lifting hydraulic cylinder 41, and a regulating hydraulic motor 31, wherein the oil supply assembly 2 is configured to convert hydraulic oil in the hydraulic oil tank 1 into pressure oil and supply the pressure oil to the discharge opening adjusting circuit 3, the upper frame lifting circuit 4, and the wedge clamping circuit 5 through a main oil inlet path 61, the discharge opening adjusting circuit 3, the upper frame lifting circuit 4, and the wedge clamping circuit 5 are further connected to the hydraulic oil tank 1 through a main oil return path 62, the discharge opening adjusting circuit 3 is configured to control the operation of the regulating hydraulic motor 31, the upper frame lifting circuit 4 is configured to control the operation of the lifting hydraulic cylinder 41, the wedge clamping circuit 5 is used to control the action of the clamping hydraulic cylinder 51.
Specifically, the oil supply assembly 2 comprises a motor and a hydraulic pump, and the motor is in transmission connection with the hydraulic pump, so that stable oil supply is performed for the hydraulic control system.
As shown in fig. 1, 3 and 6, specifically, the discharge port adjusting circuit 3 includes a first three-position four-way electromagnetic directional valve 32, the main oil inlet path 61 is connected to an oil inlet of the first three-position four-way electromagnetic directional valve 32 through a first branch oil inlet path 33, two oil outlets of the first three-position four-way electromagnetic directional valve 32 are respectively connected to two oil ports of the adjusting hydraulic motor 31 through a first oil outlet path 34 and a second oil outlet path 35, an oil return port of the first three-position four-way electromagnetic directional valve 32 is connected to the main oil return path 62 through a first branch oil return path 36, by adopting this structure, the power on of the first three-position four-way electromagnetic directional valve 32 can be conveniently controlled, at this time, the pressure oil provided by the oil supply assembly 2 is supplied to the adjusting hydraulic motor 31 and drives the adjusting hydraulic motor 31 to rotate forward or backward, through the meshing transmission of pinion and gear wheel to the corotation or the reversal of drive filter cup, thereby increase or reduce the clearance between filter cup welt and the movable cone welt, in order to conveniently realize the regulation of bin outlet size of a dimension, preferably, the quantity of regulation hydraulic motor 31 is two.
As shown in fig. 3, a brake 37 is disposed on the adjusting hydraulic motor 31, and by the arrangement of the brake 37, when the adjusting hydraulic motor 31 does not rotate, a certain braking effect is achieved, so as to further ensure the stability of the size of the discharge port, a shuttle valve 38 is connected between the first oil outlet path 34 and the second oil outlet path 35, and an oil outlet of the shuttle valve 38 is communicated with an oil inlet of the brake 37, and by adopting this structure, no matter the pressure oil provided by the oil supply assembly 2 enters from the first oil outlet path 34 or the second oil outlet path 35, the pressure oil enters the brake 37 through the shuttle valve 38, so that the braking effect of the brake 37 can be released, so as to ensure the smooth rotation of the adjusting hydraulic motor 31, and achieve the smooth adjustment of the size of the discharge port.
As shown in fig. 1, 2 and 5, specifically, the upper frame lifting loop 4 includes the second three-position four-way electromagnetic directional valve 42, the plurality of lifting hydraulic cylinders 41 are arranged in parallel, the main oil inlet 61 is connected to an oil inlet of the second three-position four-way electromagnetic directional valve 42 through a second branch oil inlet 43, two oil outlets of the second three-position four-way electromagnetic directional valve 42 are respectively connected to an oil port of a rodless cavity and an oil port of a rod cavity on the lifting hydraulic cylinder 41 through a third oil outlet path 44 and a fourth oil outlet path 45, an oil return port of the second three-position four-way electromagnetic directional valve 42 is connected to the main oil return path 62 through a second branch oil return path 47, when one side of the second three-position four-way electromagnetic directional valve 42 is controlled to be powered, the second branch oil inlet 43 is communicated with the third oil outlet path 44, and the fourth oil outlet path 45 is communicated with the second branch oil return path 47, at this time, the pressure oil provided by the oil supply unit 2 will enter the rodless cavity of the hydraulic cylinder 41, and at the same time, the pressure oil in the rod cavity of the hydraulic cylinder 41 will flow back into the hydraulic oil tank 1, and at this time, the hydraulic cylinder 41 will extend, so that the upper frame can be raised, when the other side of the second three-position four-way electromagnetic directional valve 42 is controlled to be powered, and the second branch oil inlet path 43 is communicated with the fourth oil outlet path 45, and the third oil outlet path 44 is communicated with the second branch oil return path 47, at this time, the pressure oil provided by the oil supply unit 2 will enter the rod cavity of the hydraulic cylinder 41, and at the same time, the pressure oil in the rodless cavity of the hydraulic cylinder 41 will flow back into the hydraulic oil tank 1, and at this time, the hydraulic cylinder 41 will retract, so that the upper frame can be lowered, further, a first pilot check valve 461 is provided on the third oil outlet passage 44, the first pilot check valve 461 is connected to the fourth oil outlet passage 45 through a first throttle 462, a second pilot check valve 463 is provided on the fourth oil outlet passage 45, the second pilot check valve 463 is connected to the third oil outlet passage 44 through a second throttle 464, the first pilot check valve 461 and the second pilot check valve 463 are both provided on the pressure side, by adopting this structure, when the upper frame is not raised or lowered, the first pilot check valve 461 and the second pilot check valve 463 can hold pressure oil well in the upper frame raising/lowering circuit 4, by the provision of the second throttle 464, when pressure oil supplied from the oil supply unit 2 enters the third oil outlet passage 44, part of the pressure oil is supplied to the second pilot check valve 463 through the second throttle 464, and causes the second pilot type check valve 463 to open, thereby allowing the pressure oil in the rod chamber of the lift cylinder 41 to flow back into the hydraulic oil tank 1 through the fourth oil outlet passage 45, through the setting of the first throttle valve 462, when the pressure oil supplied from the oil supply unit 2 enters the fourth oil outlet passage 45, part of the pressure oil is supplied to the first pilot type check valve 461 through the first throttle valve 462, and the first pilot type check valve 461 is opened, thereby allowing the pressure oil in the rodless chamber of the hydraulic cylinder 41 to flow back into the hydraulic oil tank 1 through the third oil outlet passage 44, the orifice diameters of the first throttle valve 462 and the second throttle valve 464 are both 0.8mm, the provision of the first and second throttle valves 462, 464 also contributes to the reduction of vibrations and leakage.
As shown in fig. 1, 2 and 5, the upper frame lifting circuit 4 further includes an energy accumulator 481, a first relief valve 482 and a first two-position on-off solenoid valve 483, one energy accumulator 481 is disposed between every two lifting hydraulic cylinders 41, the energy accumulator 481 is connected to the fourth oil outlet path 45, and the energy accumulator 481 is disposed, so that the upper frame lifting circuit 4 further has an over-iron releasing function, when uncrushable material enters a crushing cavity of a cone crusher, the energy accumulator 481 absorbs impact, hydraulic oil in a rod cavity of the lifting hydraulic cylinder 41 is pushed into the energy accumulator 481, at this time, the lifting hydraulic cylinder 41 extends and raises the upper frame temporarily, so as to discharge uncrushable material, and then, under the action of the energy accumulator 481, the lifting hydraulic cylinder 41 retracts again and returns the upper frame to a normal position, normally, the air chamber of the accumulator 481 is pre-charged with nitrogen at 1900-.
As shown in fig. 2, in addition, the fourth oil outlet path 45 is connected to the main oil return path 62 through the first relief valve 482, the first relief valve 482 is set to 172Bar to protect the upper frame lifting circuit 4 when the energy accumulator 481 fails, the fourth oil outlet path 45 is further connected to the main oil return path 62 through the first two-position on-off solenoid valve 483, and when the cone crusher is stopped, the first two-position on-off solenoid valve 483 which is normally energized loses power, so that the oil charge of the energy accumulator 481 is cut off to clear the stored energy in the upper frame lifting circuit 4.
Furthermore, it is preferable that the number of the hydraulic lifting cylinders 41 is 10, and two hydraulic lifting cylinders are grouped, and correspondingly, the number of the accumulators 481 is 5.
As shown in fig. 1, 2 and 4, specifically, the wedge-shaped clamping loop 5 includes a second two-position on-off solenoid valve 521, a third two-position on-off solenoid valve 522, a fourth two-position on-off solenoid valve 523, a first check valve 53 and a second overflow valve 54, the main oil inlet 61 is connected to an oil inlet of the second two-position on-off solenoid valve 521 through a third branch oil inlet 55, the clamping hydraulic cylinders 51 are plural and connected in series through a first annular oil path 56, an oil outlet of the second two-position on-off solenoid valve 521 is connected to the first annular oil path 56 through a fifth oil outlet 57, the first check valve 53 is arranged on the fifth oil outlet 57, and by adopting this structure, after the size adjustment of the discharge port is completed, the second two-position on-off solenoid valve 521 can be controlled to be powered on, so as to refill the clamping hydraulic cylinders 51, and the pressure in the wedge-shaped clamping loop 5 is kept at 2850psi, the clamping hydraulic cylinder 51 extends and tightly presses the locking ring, the locking ring raises the filter cup to a high enough level to lock the filter cup nut, so that the adhesive force can be generated between the filter cup and the filter cup nut, and the filter cup is locked in place, thereby well keeping the size of the discharge port stable, in addition, a pressure switch is connected to the fifth oil outlet path 57 to continuously monitor the pressure in the wedge-shaped clamping loop 5, when the pressure is lower than 2700psi, the charging can be carried out again, and in addition, the first check valve 53 can well keep the pressure oil in the wedge-shaped clamping loop 5.
Furthermore, the number of clamping cylinders 51 is preferably 15.
As shown in fig. 2, in addition, the fifth oil outlet path 57 is connected to the main oil return path 62 through a third two-position on-off solenoid valve 522, before the cone crusher operates, the third two-position on-off solenoid valve 522 may be controlled to be powered on, and the fifth oil outlet path 57 is communicated with the main oil return path 62, so that the pressure in the wedge-shaped clamping loop 5 is reduced to zero, thereby facilitating the adjustment of the size of the discharge port, the fifth oil outlet path 57 is further connected to the main oil return path 62 through the fourth two-position on-off solenoid valve 523 and the second overflow valve 54 in sequence, during the operation of the cone crusher, the fourth two-position on-off solenoid valve 523 may be controlled to be powered on, and the fifth oil outlet path 57 is communicated with the main oil return path 62 through the second overflow valve 54, the second overflow valve 54 is set to be 62Bar, so that the pressure in the wedge-shaped clamping loop 5 is maintained at 62Bar, this is a half-pressure adjustment, which facilitates the adjustment of the size of the discharge opening of the cone crusher in the case of a load or a cavity, preferably in the case of a cavity.
As shown in fig. 2, the wedge-shaped clamping circuit 5 further includes a third relief valve 58, the third relief valve 58 is set to be 200Bar, the fifth oil outlet path 57 is further connected to the main oil return path 62 through the third relief valve 58, and the wedge-shaped clamping circuit 5 can be protected to a certain extent through the setting of the third relief valve 58.
As shown in fig. 1 and 7, in addition, the hydraulic control system of the cone crusher further comprises an anti-rotation hydraulic motor 71, two oil ports of the anti-rotation hydraulic motor 71 are connected through a second annular oil path 72, a second check valve 73 is arranged on the second annular oil path 72, by adopting the structure, before the crushing cavity is not fed and crushed, hydraulic oil cannot flow anticlockwise in the second annular oil path 72 due to the arrangement of the second check valve 73, so that the anti-rotation hydraulic motor 71 cannot rotate to function as a brake 37, and by adopting a corresponding connecting mechanism, the anti-rotation cone is ensured not to rotate before the crushing starts, unnecessary abrasion of a lining plate of the moving cone is avoided, and during the crushing process, the anti-rotation hydraulic motor 71 slowly rotates the moving cone clockwise, namely, the anti-rotation hydraulic motor 71 can rotate clockwise along with the moving cone, and hydraulic oil will flow instantaneously in said second annular oil passage 72 through said second check valve 73 being opened.
As shown in fig. 1 and 7, the second annular oil path 72 is further connected to a fourth relief valve 74 connected in parallel with the second check valve 73, the fourth relief valve 74 is set to 220Bar, so that when an operator inadvertently tries to reduce the size of the discharge opening to cause the abutment of the lining plate of the filter cup with the lining plate of the movable cone or cause a problem of the main bearing and generate overpressure, the anti-rotation hydraulic motor 71 is protected to a certain extent by the setting of the fourth relief valve 74, and further, the main oil inlet path 61 is connected to the second annular oil path 72 through a fourth branch oil inlet path 75, the fourth branch oil inlet path 75 is provided with a pressure reducing valve 76, and the pressure reducing valve 76 is set to 15Bar, so that when the second annular oil path 72 leaks, the pressure can be supplemented to the second annular oil path 72 through the pressure reducing valve 76.
As shown in fig. 1 and 2, in addition, a first filter 81 is disposed on the main oil inlet path 61, the first filter 81 may be a pressure filter with a visual pressure difference indicator, so as to filter the pressure oil provided by the oil supply assembly 2, ensure that the impurities in the hydraulic oil entering the hydraulic control system are less, and facilitate to improve the service life of the whole hydraulic control system, a second filter 82 is disposed on the main oil return path 62, the second filter 82 may be a filter with a bypass valve, so as to perform a certain filtering function on the hydraulic oil returned to the hydraulic oil tank 1, the main oil inlet path 61 is connected with the main oil return path 62 through a fifth overflow valve 91, the fifth overflow valve 91 is disposed as 210Bar, the main oil inlet path 61 is further connected with the main oil return path 62 through a fifth two-position electromagnetic valve on-off 92, therefore, the hydraulic control system can be protected to a certain extent.
A control method of a hydraulic control system of a cone crusher utilizes the hydraulic control system of the circumference crusher, comprises the following steps of lifting control of an upper frame, adjustment control of a discharge opening size and iron passing release control of a crushing cavity:
lifting control of the upper frame:
controlling one side of the second three-position four-way electromagnetic directional valve 42 to be electrified, communicating the second branch oil inlet path 43 with the third oil outlet path 44, and communicating the fourth oil outlet path 45 with the second branch oil return path 47, wherein at the moment, pressure oil provided by the oil supply assembly 2 enters a rodless cavity of the lifting hydraulic cylinder 41, and meanwhile, the pressure oil in a rod cavity of the lifting hydraulic cylinder 41 flows back to the hydraulic oil tank 1, and at the moment, the lifting hydraulic cylinder 41 extends, so that the lifting of the upper frame can be realized;
controlling the other side of the second three-position four-way electromagnetic directional valve 42 to be electrified, communicating the second branch oil inlet path 43 with the fourth oil outlet path 45, and communicating the third oil outlet path 44 with the second branch oil return path 47, wherein at the moment, the pressure oil provided by the oil supply assembly 2 enters the rod cavity of the lifting hydraulic cylinder 41, and meanwhile, the pressure oil in the rodless cavity of the lifting hydraulic cylinder 41 flows back to the hydraulic oil tank 1, and at the moment, the lifting hydraulic cylinder 41 retracts, so that the upper frame can descend;
adjusting and controlling the size of a discharge opening:
before the cone crusher runs, the third two-position on-off solenoid valve 522 is controlled to be powered on, the fifth oil outlet oil path 57 is communicated with the main oil return path 62, so that the pressure in the wedge-shaped clamping loop 5 is reduced to zero, then the first three-position four-way electromagnetic directional valve 32 is controlled to be powered on, at the moment, the pressure oil provided by the oil supply assembly 2 is supplied to the regulating hydraulic motor 31, the regulating hydraulic motor 31 is enabled to rotate, the filter cup is driven to rotate, the gap between the lining plate of the filter cup and the lining plate of the movable cone is adjusted, so that the size of the discharge port is adjusted, after the adjustment is completed, the third two-position on-off solenoid valve 522 is controlled to be powered off, the second two-position on-off solenoid valve 521 is controlled to be powered on, so that the clamping hydraulic cylinder 51 is refilled, and the locking ring is jacked, so that the size of the discharge port is kept stable;
when the cone crusher runs, when the fourth two-position on-off solenoid valve 523 is controlled to be powered on and the fifth oil outlet oil path 57 is communicated with the main oil return path 62 through the second overflow valve 54, so that the pressure in the wedge-shaped clamping loop 5 is kept at 62Bar, then the first three-position four-way electromagnetic directional valve 32 is controlled to be powered on, at the moment, the pressure oil provided by the oil supply assembly 2 is supplied to the adjusting hydraulic motor 31 and the adjusting hydraulic motor 31 rotates, so that the filter cup is driven to rotate, the gap between the lining plate of the filter cup and the movable cone lining plate is adjusted, so that the size of the discharge port is adjusted, and after the adjustment is completed, the fourth two-position on-off solenoid valve 523 is controlled to be powered off, the second two-position solenoid valve 521 is controlled to be powered on, so that the clamping hydraulic cylinder 51 is refilled, so that the locking ring is tightly pressed, and the size of the discharge port is kept stable;
and (3) iron passing release control of the crushing cavity:
when uncrushable materials enter the crushing cavity, the energy accumulator 481 absorbs impact, hydraulic oil in the rod cavity of the lifting hydraulic cylinder 41 is pushed into the energy accumulator 481, at the moment, the lifting hydraulic cylinder 41 extends and enables the upper frame to rise temporarily, so that the uncrushable materials are discharged, and then, under the action of the energy accumulator 481, the lifting hydraulic cylinder 41 retracts again and enables the upper frame to return to a normal position.
The above description is only a few specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by the design concept should fall within the scope of the present invention.
Claims (10)
1. The hydraulic control system of the cone crusher is characterized in that: including hydraulic tank, fuel feeding unit, bin outlet control circuit, go up frame lift circuit, wedge clamping loop, press from both sides tight pneumatic cylinder, hydraulic cylinder and regulation hydraulic motor, fuel feeding unit be used for with hydraulic oil in the hydraulic tank changes pressure oil into and supplies respectively to through main oil feed way go up frame lift circuit with the wedge presss from both sides tight circuit, the bin outlet control circuit go up frame lift circuit with the wedge presss from both sides tight circuit still all through main oil return way with hydraulic tank is connected, the bin outlet control circuit is used for control adjust hydraulic motor's action, it is used for control to go up frame lift circuit lift hydraulic cylinder's action, the wedge presss from both sides tight circuit and is used for control press from both sides the action of tight pneumatic cylinder.
2. The hydraulic control system of a cone crusher and the control method thereof according to claim 1, wherein: the bin outlet regulating circuit comprises a first three-position four-way electromagnetic directional valve, a main oil inlet path is connected with an oil inlet of the first three-position four-way electromagnetic directional valve through a first branch oil inlet path, two oil outlets of the first three-position four-way electromagnetic directional valve are respectively connected with two oil ports of the regulating hydraulic motor through a first oil outlet path and a second oil outlet path, and an oil return port of the first three-position four-way electromagnetic directional valve is connected with the main oil return path through a first branch oil return path.
3. The hydraulic control system of a cone crusher and the control method thereof according to claim 2, wherein: and a brake is arranged on the adjusting hydraulic motor, a shuttle valve is connected between the first oil outlet oil way and the second oil outlet oil way, and an oil outlet of the shuttle valve is communicated with an oil inlet of the brake.
4. The hydraulic control system of a cone crusher and the control method thereof according to claim 1, wherein: the upper frame lifting loop comprises a second three-position four-way electromagnetic directional valve, a plurality of lifting hydraulic cylinders are arranged in parallel, the main oil inlet path is connected with an oil inlet of the second three-position four-way electromagnetic directional valve through a second branch oil inlet path, two oil outlets of the second three-position four-way electromagnetic directional valve are respectively connected with a rodless cavity oil port and a rod cavity oil port on the lifting hydraulic cylinder through a third oil outlet oil way and a fourth oil outlet oil way, the third oil outlet channel is provided with a first pilot check valve which is connected with the fourth oil outlet channel through a first throttle valve, a second pilot check valve is arranged on the fourth oil outlet channel and is connected with the third oil outlet channel through a second throttle valve, and an oil return port of the second three-position four-way electromagnetic reversing valve is connected with the main oil return path through a second branch oil return path.
5. The hydraulic control system of a cone crusher and the control method thereof according to claim 4, wherein: the upper frame lifting loop further comprises an energy accumulator, a first overflow valve and a first two-position on-off electromagnetic valve, one energy accumulator is arranged between every two lifting hydraulic cylinders, the energy accumulator is connected with a fourth oil outlet path, the fourth oil outlet path is connected with the main oil return path through the first overflow valve, and the fourth oil outlet path is connected with the main oil return path through the first two-position on-off electromagnetic valve.
6. The hydraulic control system of a cone crusher and the control method thereof according to claim 1, wherein: the wedge-shaped clamping loop comprises a second two-position on-off solenoid valve, a third two-position on-off solenoid valve, a fourth two-position on-off solenoid valve, a first check valve and a second overflow valve, a main oil inlet path is connected with an oil inlet of the second two-position on-off solenoid valve through a third branch oil inlet path, a plurality of clamping hydraulic cylinders are connected in series through a first annular oil path, an oil outlet of the second two-position on-off solenoid valve is connected with the first annular oil path through a fifth oil outlet path, the first check valve is arranged on the fifth oil outlet path, the fifth oil outlet path is connected with the main oil path through the third two-position on-off solenoid valve, and the fifth oil outlet path is further connected with the main oil path through the fourth two-position on-off solenoid valve and the second overflow valve in sequence.
7. The hydraulic control system of a cone crusher and the control method thereof according to claim 6, wherein: the wedge-shaped clamping loop further comprises a third overflow valve, and the fifth oil outlet oil way is further connected with the main oil return way through the third overflow valve.
8. The hydraulic control system of a cone crusher and the control method thereof according to claim 1, wherein: the anti-rotation hydraulic motor is characterized by further comprising an anti-rotation hydraulic motor, two oil ports of the anti-rotation hydraulic motor are connected through a second annular oil way, a second one-way valve is arranged on the second annular oil way, a fourth overflow valve which is connected with the second one-way valve in parallel is further connected onto the second annular oil way, the main oil inlet way is connected with the second annular oil way through a fourth branch oil inlet way, and a pressure reducing valve is arranged on the fourth branch oil inlet way.
9. The hydraulic control system of a cone crusher and the control method thereof according to claim 1, wherein: the main oil inlet path is provided with a first filter, the main oil return path is provided with a second filter, the main oil inlet path is connected with the main oil return path through a fifth overflow valve, and the main oil inlet path is also connected with the main oil return path through a fifth two-position on-off solenoid valve.
10. A control method of a hydraulic control system of a cone crusher using the hydraulic control system of a peripheral crusher according to any one of claims 1 to 9, characterized in that: the method comprises the following steps of lifting control of an upper frame, size adjustment control of a discharge opening and iron passing release control of a crushing cavity:
lifting control of the upper frame:
controlling one side of the second three-position four-way electromagnetic directional valve to be electrified, communicating a second branch oil inlet path with a third oil outlet path, and communicating a fourth oil outlet path with a second branch oil return path, wherein at the moment, pressure oil provided by the oil supply assembly enters a rodless cavity of the lifting hydraulic cylinder, and meanwhile, the pressure oil in a rod cavity of the lifting hydraulic cylinder flows back to a hydraulic oil tank, and at the moment, the lifting hydraulic cylinder extends, so that the upper frame can ascend;
controlling the other side of the second three-position four-way electromagnetic directional valve to be electrified, communicating a second branch oil inlet path with a fourth oil outlet path, and communicating a third oil outlet path with a second branch oil return path, wherein at the moment, pressure oil provided by the oil supply assembly enters a rod cavity of the lifting hydraulic cylinder, and meanwhile, the pressure oil in a rodless cavity of the lifting hydraulic cylinder flows back to a hydraulic oil tank, and at the moment, the lifting hydraulic cylinder retracts, so that the upper frame can descend;
adjusting and controlling the size of a discharge opening:
before the cone crusher runs, controlling a third two-position on-off solenoid valve to be electrified and communicating a fifth oil outlet oil path with a main oil return path so as to reduce the pressure in a wedge-shaped clamping loop to zero, then controlling the electrification of a first three-position four-way electromagnetic reversing valve, supplying pressure oil provided by an oil supply assembly to a regulating hydraulic motor, rotating the regulating hydraulic motor to drive a filter cup to rotate, adjusting a gap between a lining plate of the filter cup and a lining plate of a movable cone so as to realize the size regulation of a discharge port, controlling the third two-position on-off solenoid valve to be deenergized and controlling a second two-position on-off solenoid valve to be electrified after the regulation is finished, so as to recharge a clamping hydraulic cylinder, and tightly jacking a locking ring so as to keep the size of the discharge port stable;
when the cone crusher runs, the fourth two-position on-off solenoid valve is controlled to be powered on, the fifth oil outlet oil path is communicated with the main oil return path through the second overflow valve, so that the pressure in the wedge-shaped clamping loop is kept at 62Bar, then the first three-position four-way electromagnetic reversing valve is controlled to be powered on, at the moment, pressure oil provided by the oil supply assembly is supplied to the regulating hydraulic motor, the regulating hydraulic motor is enabled to rotate, the filter cup is driven to rotate, the gap between the filter cup lining plate and the movable cone lining plate is adjusted, the size of the discharge port is adjusted, after the adjustment is completed, the fourth two-position on-off solenoid valve is controlled to be powered off, the second two-position solenoid valve is controlled to be powered on, so that the clamping hydraulic cylinder is recharged, and the locking ring is tightly pressed, so that the size of the discharge port is kept stable;
and (3) iron passing release control of the crushing cavity:
when uncrushable materials enter the crushing cavity, the energy accumulator absorbs impact, hydraulic oil in a rod cavity of the lifting hydraulic cylinder is pushed into the energy accumulator, at the moment, the lifting hydraulic cylinder extends and enables the upper frame to rise temporarily, so that the uncrushable materials are discharged, and then under the action of the energy accumulator, the lifting hydraulic cylinder retracts again and enables the upper frame to return to a normal position.
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