CN217502110U - Hydraulic control system of multi-cylinder cone crusher - Google Patents
Hydraulic control system of multi-cylinder cone crusher Download PDFInfo
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- CN217502110U CN217502110U CN202221234264.XU CN202221234264U CN217502110U CN 217502110 U CN217502110 U CN 217502110U CN 202221234264 U CN202221234264 U CN 202221234264U CN 217502110 U CN217502110 U CN 217502110U
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Abstract
The utility model discloses a multi-cylinder cone crusher hydraulic control system, including the sensitive variable pump of load, release circuit, locking circuit and bin outlet hydraulic pressure adjustment return circuit are parallelly connected with the sensitive variable pump oil-out of load, are provided with the control oil circuit on the sensitive variable pump of load, are provided with highest load feedback shuttle valve on the control oil circuit, and release circuit is connected to highest load feedback shuttle valve one side oil inlet, and locking circuit and bin outlet hydraulic pressure adjustment return circuit are connected respectively to the opposite side oil inlet. The utility model discloses a release circuit, locking circuit, bin outlet hydraulic pressure adjustment return circuit's pressure oil gets the sensitive variable pump of highest pressure feedback to load through highest feedback shuttle valve, and the sensitive variable pump of load provides required pressure oil according to the load actual demand, and the system does not have the throttle loss.
Description
Technical Field
The utility model belongs to the mining equipment field, concretely relates to multi-cylinder cone crusher hydraulic control system.
Background
The hydraulic system of the multi-cylinder cone crusher mainly provides hydraulic power required by a release cylinder tensioning force, a locking cylinder locking force and a discharge port adjusting motor for a main machine. The conventional system adopts a quantitative gear pump to supply oil to the system, so that the system has high energy consumption and large heat generation. When the release cylinder performs cavity cleaning action, high pressure in the energy accumulator flows back to the oil tank quickly, and energy loss is large. After the system is overloaded, oil of the energy accumulator is quickly charged back to the release cylinder, so that the upper frame and the lower frame of the multi-cylinder cone crusher knock to damage a contact surface.
Disclosure of Invention
An object of the utility model is to provide a multi-cylinder cone crusher hydraulic control system can provide required pressure oil according to the load actual demand by the oil pump, makes whole hydraulic control system not have the throttling loss.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a hydraulic control system of a multi-cylinder cone crusher comprises a load sensitive variable pump, a release loop, a locking loop and a discharge port hydraulic adjusting loop, wherein the release loop, the locking loop and the discharge port hydraulic adjusting loop are connected with an oil outlet of the load sensitive variable pump in parallel, a control oil path is arranged on the load sensitive variable pump, a highest load feedback shuttle valve is arranged on the control oil path, an oil inlet on one side of the highest load feedback shuttle valve is connected with the release loop, and an oil inlet on the other side of the highest load feedback shuttle valve is connected with the locking loop and the discharge port hydraulic adjusting loop respectively.
Further, the releasing loop comprises a releasing cylinder, a rod cavity oil way connected with a rod cavity of the releasing cylinder, a rodless cavity oil way connected with a rodless cavity of the releasing cylinder and a releasing oil return oil way, the rod cavity oil way and the rodless cavity oil way are connected with an oil outlet of the load sensitive variable displacement pump through releasing electro-hydraulic valves, the releasing oil return oil way is respectively connected with the releasing electro-hydraulic valves and an oil tank, the rod cavity oil way and the rodless cavity oil way are connected through releasing cylinder load shuttle valves, and the oil outlet of the releasing cylinder load shuttle valves is connected with an oil inlet of the highest load feedback shuttle valves.
Furthermore, a release pressure control oil path is branched at the connection position of the oil outlet of the load shuttle valve of the release cylinder and the oil inlet of the highest load feedback shuttle valve, the release pressure control oil path is connected with an oil tank, and a release overflow valve is arranged on the release pressure control oil path.
Furthermore, a one-way throttle valve and a safety valve are sequentially arranged on a rodless cavity oil path between the release cylinder load shuttle valve and the release cylinder, an oil inlet of the safety valve is connected with a rod cavity of the release cylinder, a hydraulic control one-way valve, a small energy accumulator and a large energy accumulator are sequentially arranged on a rod cavity oil path between the release cylinder load shuttle valve and the release cylinder, a hydraulic control oil path is arranged on the hydraulic control one-way valve and connected with the rodless cavity oil path, and the inflation pressure of the large energy accumulator is greater than that of the small energy accumulator.
Furthermore, a rod cavity oil way between the hydraulic control one-way valve and the small energy accumulator and a rodless cavity oil way between the one-way throttle valve and the safety valve are connected through a differential electromagnetic valve.
Furthermore, a manual pressure relief oil way is arranged on a branch of the oil way with the rod cavity between the differential electromagnetic valve and the hydraulic control one-way valve and connected with the oil tank, and a first pressure sensor, a first pressure gauge and a first throttle valve are sequentially arranged on the manual pressure relief oil way.
Furthermore, the locking loop comprises a locking oil cylinder, a locking working oil path and a locking oil supplementing path, the locking working oil path is respectively connected with the load sensitive variable pump and the locking oil cylinder, a locking throttle valve, a locking solenoid valve and a locking one-way valve are sequentially arranged on the locking working oil path, the locking oil supplementing path is respectively connected with the locking solenoid valve and the oil tank, a locking control oil path is arranged on a branch of the working oil path between the locking solenoid valve and the locking one-way valve, a locking oil cylinder feedback shuttle valve is arranged on the locking control oil path, an oil outlet of the locking oil cylinder feedback shuttle valve is connected with an oil inlet of the highest load feedback shuttle valve, a locking pressure control oil path is arranged on a branch of the locking control oil path, the locking pressure control oil path is connected with the oil tank, and a locking overflow valve is arranged on the locking pressure control oil path.
Furthermore, a locking oil return path is arranged on a branch of the locking working oil path between the locking one-way valve and the locking oil cylinder, the locking oil return path is connected with an oil tank, and a locking oil return electromagnetic valve and a locking oil return overflow valve are sequentially arranged on the locking oil return path.
Furthermore, a locking pressure maintaining oil way is arranged on a branch of the locking working oil way between the locking oil return oil way and the locking one-way valve and connected with an oil tank, and a second pressure gauge, a second pressure sensor, a pressure relief electromagnetic valve, a pressure maintaining energy accumulator and a second throttle valve are sequentially arranged on the locking pressure maintaining oil way.
Furthermore, the discharge port hydraulic pressure adjusting loop comprises a hydraulic motor, a motor left side working oil path connected with a left side oil port of the hydraulic motor, a motor right side working oil path connected with a right side oil port of the hydraulic motor, an adjusting electro-hydraulic valve, a hydraulic working oil path and an adjusting oil return path which are respectively connected with the adjusting electro-hydraulic valve and an oil outlet of the load sensitive variable pump, the motor left side working oil path and the motor right side working oil path are connected with the adjusting electro-hydraulic valve, the adjusting electro-hydraulic valve is connected with the oil outlet of the load sensitive variable pump through the hydraulic working oil path, the adjusting oil return path is respectively connected with the adjusting electro-hydraulic valve and an oil tank, and a third pressure gauge and a third pressure sensor are arranged on the hydraulic working oil path.
Furthermore, a motor speed-regulating oil way is arranged on the hydraulic working oil way branch and is connected with a hydraulic motor oil drain port, a speed-regulating electromagnetic valve is arranged on the motor speed-regulating oil way, a speed-regulating oil return way is arranged on the speed-regulating electromagnetic valve, and the speed-regulating oil return way is connected with an oil tank through the speed-regulating oil return way.
Furthermore, the hydraulic adjusting loop of the discharge port further comprises a balance valve, and the working oil path on the left side of the motor is connected with the working oil path on the right side of the motor through the balance valve.
Furthermore, a hydraulic brake is further arranged on the hydraulic motor, a hydraulic control oil path is arranged on the hydraulic brake, a hydraulic control shuttle valve is arranged at an oil inlet of the hydraulic control oil path, two oil inlets of the hydraulic control shuttle valve are respectively connected with a left working oil path of the motor and a right working oil path of the motor, and a branch of the hydraulic control oil path is connected with an oil inlet of a feedback shuttle valve of the locking oil cylinder.
Furthermore, an oil inlet of the load-sensitive variable pump is provided with an oil absorption filter, and an oil outlet of the load-sensitive variable pump is sequentially provided with a high-pressure filter and an oil supply one-way valve.
Compared with the prior art, the utility model discloses following beneficial effect has: 1. the pressure oil of the release loop, the locking loop and the discharge port hydraulic adjusting loop is fed back to the load sensitive variable pump by taking the highest pressure through the highest feedback shuttle valve, the load sensitive variable pump provides the required pressure oil according to the actual load requirement, and the system has no throttling loss. 2. The release cylinder loop adopts differential control, so that the cavity cleaning action time is saved, and meanwhile, the energy of the release cylinder energy accumulator can be recovered, so that the energy-saving effect is better. A differential electromagnetic valve is additionally arranged between a rodless cavity and a rod cavity of the release cylinder, so that time control during cavity cleaning of the release cylinder can be realized, and the cavity cleaning is quicker. Meanwhile, high-pressure oil of the energy accumulator can be used for cleaning the cavity, so that energy recycling is realized. 3. The high-low speed of the hydraulic motor for adjusting the discharge hole is controllable, the high-low speed switching during the adjustment of the discharge hole can be realized, and the motor can rotate rapidly when the lining plate or other parts are replaced, so that the adjustment time can be saved. When the discharge opening is close to the requirement, the motor can rotate at a low speed, so that the control is more accurate. 4. The energy accumulator of the release oil cylinder is matched with the large energy accumulator and the small energy accumulator, so that the impact caused by resetting after the upper frame and the lower frame are overloaded can be prevented. The charging pressure of the large energy accumulator is overload protection pressure and is higher than that of the small energy accumulator. After overload, the big energy accumulator can quickly supplement oil when the machine frame is reset, after the oil in the big energy accumulator is discharged, the small energy accumulator can continuously discharge oil at a low speed, the upper machine frame and the lower machine frame are slowly contacted to prevent mutual impact, and the service life of parts can be prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. oil suction filter, 2 load sensitive variable pump, 3 high pressure filter, 4 oil supply one-way valve, 5 third pressure gauge, 6 third pressure sensor, 7 adjusting electrohydraulic valve, 8 speed regulating solenoid valve, 9 balance valve, 10 hydraulic control shuttle valve, 11 locking throttle valve, 12 locking overflow valve, 13 locking solenoid valve, 14 locking oil cylinder feedback shuttle valve, 15 locking one-way valve, 16 locking oil return solenoid valve, 17 locking oil return overflow valve, 18 solenoid valve, 19 second pressure sensor, 20 second pressure gauge, 21 pressure maintaining accumulator, 22 second throttle valve, 23 releasing electrohydraulic valve, 24 releasing overflow valve, 25 highest load feedback shuttle valve, 26 releasing cylinder load shuttle valve, 27 hydraulic control one-way valve, 28 one-way throttle valve, 29 first throttle valve, 30 large accumulator, 31 small accumulator, 32. The hydraulic control system comprises a first pressure sensor, 33, a first pressure gauge, 34, a hydraulic motor, 35, a locking oil cylinder, 36, a differential electromagnetic valve, 37, a safety valve and 38, and a release cylinder
Detailed Description
Referring to fig. 1, the hydraulic control system of the multi-cylinder cone crusher comprises a load sensitive variable pump 2, a release loop, a locking loop and a discharge port hydraulic adjusting loop, wherein the release loop, the locking loop and the discharge port hydraulic adjusting loop are connected with an oil outlet of the load sensitive variable pump 2 in parallel, a control oil path is arranged on the load sensitive variable pump 2, a highest load feedback shuttle valve 25 is arranged on the control oil path, an oil inlet at one side of the highest load feedback shuttle valve 25 is connected with the release loop, and an oil inlet at the other side is respectively connected with the locking loop and the discharge port hydraulic adjusting loop. The pressure oil of the release loop, the locking loop and the hydraulic adjusting loop of the discharge port is fed back to the load sensitive variable pump 2 by taking the highest pressure through the highest feedback shuttle valve 25, the load sensitive variable pump 2 provides the required pressure oil according to the actual load requirement, and the system has no throttling loss.
Further, the release loop comprises a release cylinder 38, a rod cavity oil path connected with a rod cavity of the release cylinder 38, a rodless cavity oil path connected with a rodless cavity of the release cylinder 38, and a release oil return path, wherein the rod cavity oil path and the rodless cavity oil path are connected with an oil outlet of the load sensitive variable pump 2 through a release electro-hydraulic valve 23, the release oil return path is respectively connected with the release electro-hydraulic valve 23 and an oil tank, the rod cavity oil path and the rodless cavity oil path are connected through a release cylinder load shuttle valve 26, and an oil outlet of the release cylinder load shuttle valve 26 is connected with an oil inlet of a highest load feedback shuttle valve 25. The hydraulic oil is supplied to the release cylinder through the load sensitive variable displacement pump 2, and the hydraulic oil is switched to enter a rod cavity oil circuit or a rodless cavity oil circuit through the release electro-hydraulic valve 23, so that the tensioning and cavity cleaning actions of the release cylinder 38 are controlled. And when the release cylinder 38 works, the load pressure oil of the release cylinder 38 is taken by the release cylinder load shuttle valve 26 and fed back to the highest load feedback shuttle valve 25, and then the highest load pressure oil of the whole system is taken by the highest load feedback shuttle valve 25 and fed back to the load-sensitive variable displacement pump 2.
Further, a release pressure control oil path is branched at the connection position of the oil outlet of the release cylinder load shuttle valve 26 and the oil inlet of the highest load feedback shuttle valve 25, the release pressure control oil path is connected with an oil tank, and a release overflow valve 24 is arranged on the release pressure control oil path. The relief valve 24 is used to set the maximum pressure of the relief circuit, and when the maximum pressure of the relief circuit exceeds a set value, hydraulic oil automatically overflows back to the tank, thereby reducing the relief circuit pressure.
Further, a one-way throttle valve 28 and a safety valve 37 are sequentially arranged on a rodless cavity oil path between the release cylinder load shuttle valve 26 and the release cylinder 38, an oil inlet of the safety valve 37 is connected with a rod cavity of the release cylinder 38, a hydraulic control one-way valve 27, a small energy accumulator 31 and a large energy accumulator 30 are sequentially arranged on a rod cavity oil path between the release cylinder load shuttle valve 26 and the release cylinder 38, a hydraulic control oil path is arranged on the hydraulic control one-way valve 27 and connected with a rodless cavity oil path, and the charging pressure of the large energy accumulator 30 is greater than that of the small energy accumulator 31. Wherein, the load shuttle valve 26 of the release cylinder takes the load pressure oil of the release cylinder 38 and feeds the load pressure oil back to the highest load feedback shuttle valve 25; the hydraulic control one-way valve 27 is used for locking pressure oil of a rod cavity oil circuit of the release cylinder 38; the one-way throttle valve 28 enables hydraulic oil to rapidly enter the rodless cavity of the release cylinder 38, the speed is controllable when the hydraulic oil flows out, and the rack is stable when the rack is reset; the relief valve 37 is used to set the maximum relief pressure at which the release cylinder 38 is tightened; the large accumulator 30 provides protection for system overload; the small accumulator 31 maintains the pressure of the rod cavity loop of the release cylinder 38; after overload, the big energy accumulator 30 can quickly supply oil when the machine frame is reset, after the oil of the big energy accumulator 30 is discharged, the small energy accumulator 31 can continuously discharge the oil at a low speed, the upper machine frame and the lower machine frame are in slow contact, so that mutual impact is prevented, and the service life of parts can be prolonged.
Further, a rod chamber oil passage between the pilot operated check valve 27 and the small accumulator 31 and a rodless chamber oil passage between the check throttle valve 28 and the relief valve 37 are connected by a differential electromagnetic valve 36. The differential electromagnetic valve 36 is connected with a rod cavity oil way and a rodless cavity oil way to realize differential control when the cavity of the release cylinder 38 is cleaned;
further, a manual pressure relief oil path is branched from the rod cavity oil path between the differential electromagnetic valve 36 and the pilot operated check valve 27, the manual pressure relief oil path is connected to the oil tank, and the manual pressure relief oil path is sequentially provided with a first pressure sensor 32, a first pressure gauge 33 and a first throttle valve 29. The first throttle valve 29 is used for locking a rod cavity loop of the release cylinder 38 to realize manual pressure release; first pressure sensor 32 is used to communicate the pressure of rod chamber circuit of release cylinder 38; the first pressure gauge 33 reads the pressure of the rod cavity loop of the release cylinder 38;
further, the locking loop comprises a locking oil cylinder 35, a locking working oil path and a locking oil supplementing path, the locking working oil path is respectively connected with the load sensitive variable pump 2 and the locking oil cylinder 35, the locking working oil path is sequentially provided with a locking throttle valve 11, a locking electromagnetic valve 13 and a locking one-way valve 15, the locking oil supplementing path is respectively connected with the locking electromagnetic valve 13 and the oil tank, a locking control oil path is arranged on a branch of the working oil path between the locking electromagnetic valve 13 and the locking one-way valve 15, a locking oil cylinder feedback shuttle valve 14 is arranged on the locking control oil path, an oil outlet of the locking oil cylinder feedback shuttle valve 14 is connected with an oil inlet of the highest load feedback shuttle valve 25, a locking pressure control oil path is arranged on a branch of the locking control oil path, the locking pressure control oil path is connected with the oil tank, and a locking overflow valve 12 is arranged on the locking pressure control oil path. The locking solenoid valve 13 controls oil supplement to the locking oil cylinder 35, so that the locking cylinder 35 locks the fixed cone to prevent the fixed cone from rotating during production of the conical strip. The locking throttle valve 11 can adjust the oil quantity of the locking loop; the locking overflow valve 12 is used for setting the highest pressure of the locking loop, and when the pressure exceeds the highest pressure; the locking overflow valve 12 automatically overflows and releases pressure; and when the locking cylinder 35 is operated, the locking cylinder feedback shuttle valve 14 takes the load oil pressure and feeds back to the highest load feedback shuttle valve 25.
Furthermore, a locking oil return path is branched from the locking working oil path between the locking one-way valve 15 and the locking oil cylinder 35 and is connected with an oil tank, and a locking oil return electromagnetic valve 18 and a locking oil return overflow valve 17 are sequentially arranged on the locking oil return path. The locking oil return electromagnetic valve 18 is used for unloading the pressure of a locking loop when the hydraulic motor 3 rotates, so that the fixed cone can rotate, and the function of adjusting a discharge port is realized; the locking oil return relief valve 17 is used for setting the pressure of the locking circuit when the hydraulic motor 34 rotates;
furthermore, a locking pressure maintaining oil path is arranged on a branch of the locking working oil path between the locking oil return path and the locking one-way valve 15, the locking pressure maintaining oil path is connected with an oil tank, and a second pressure gauge 20, a second pressure sensor 19, a pressure relief electromagnetic valve 16, a pressure maintaining energy accumulator 21 and a second throttle valve 22 are sequentially arranged on the locking pressure maintaining oil path. The pressure maintaining accumulator 21 maintains the pressure of the locking loop; a second pressure sensor 19 for transmitting the pressure of the locking circuit; the second pressure gauge 20 is used for reading the pressure of the locking loop; the second throttle valve 22 is used for locking the circuit and manually relieving pressure; the pressure relief solenoid valve 16 is used for cutting off the high-pressure oil of the pressure maintaining accumulator 21 when the hydraulic motor 34 rotates;
further, the discharge port hydraulic pressure adjusting loop comprises a hydraulic motor 34, a motor left side working oil path connected with a left side oil port of the hydraulic motor 34, a motor right side working oil path connected with a right side oil port of the hydraulic motor 34, an adjusting electro-hydraulic valve 7, a hydraulic working oil path and an adjusting oil return path respectively connected with the adjusting electro-hydraulic valve 7 and an oil outlet of the load sensitive variable pump 2, the motor left side working oil path and the motor right side working oil path are connected with the adjusting electro-hydraulic valve 7, the adjusting electro-hydraulic valve 7 is connected with the oil outlet of the load sensitive variable pump 2 through the hydraulic working oil path, the adjusting oil return path is respectively connected with the adjusting electro-hydraulic valve 7 and an oil tank, and a third pressure gauge 5 and a third pressure sensor 6 are arranged on the hydraulic working oil path.
Furthermore, a motor speed-regulating oil way is arranged on the hydraulic working oil way branch and is connected with an oil drain port of the hydraulic motor 34, a speed-regulating electromagnetic valve 8 is arranged on the motor speed-regulating oil way, a speed-regulating oil return way is arranged on the speed-regulating electromagnetic valve 8, and the speed-regulating oil return way is connected with an oil tank through the speed-regulating oil return way. The speed regulating electromagnetic valve 8 switches the leakage oil to return to the oil tank or the oil to enter the hydraulic motor 34, so that the high-speed and low-speed switching of the hydraulic motor 34 is realized.
Furthermore, the hydraulic adjusting loop of the discharge port further comprises a balance valve 9, and the working oil path on the left side of the motor is connected with the working oil path on the right side of the motor through the balance valve 9. The balancing valve 9 serves to prevent reverse rotation of the hydraulic motor 34.
Further, a hydraulic brake is arranged on the hydraulic motor 34, a hydraulic control oil path is arranged on the hydraulic brake, a hydraulic control shuttle valve 10 is arranged at an oil inlet of the hydraulic control oil path, two oil inlets of the hydraulic control shuttle valve 10 are respectively connected with a left working oil path of the motor and a right working oil path of the motor, and a branch of the hydraulic control oil path is connected with an oil inlet of a feedback shuttle valve 14 of the locking oil cylinder. The hydraulic control shuttle valve 10 is started by taking pressure oil on the oil inlet side of the hydraulic motor 34 to control a brake, so that the hydraulic motor 34 brakes when the hydraulic motor 34 rotates in a reversing way, the pressure on the oil inlet side of the hydraulic motor 34 is fed back to the locking cylinder feedback shuttle valve 14 through the hydraulic control shuttle valve 10, and the pressure is fed back to the highest load feedback shuttle valve 25 through the locking cylinder feedback shuttle valve 14.
Further, an oil inlet of the load-sensitive variable pump 2 is provided with an oil absorption filter 1, and an oil outlet of the load-sensitive variable pump 2 is sequentially provided with a high-pressure filter 3 and an oil supply one-way valve 4. The oil absorption filter 1 and the high-pressure filter 3 provide clean hydraulic oil for the whole system, so that the hydraulic elements behind are protected, the service life of the hydraulic elements is prolonged, the oil supply one-way valve 4 can prevent the hydraulic oil in the system from flowing backwards, and the filter and the oil pump can be conveniently maintained.
The utility model discloses a hydraulic system mainly has the bin outlet and transfers big, the bin outlet transfers little, locking return circuit and release jar have pole chamber return circuit pressurization, release jar clear chamber these several actions.
When the crusher normally works, the locking cylinder 35 needs to be kept within a certain pressure range, when the pressure of the second pressure sensor 19 is detected to be lower than the requirement, the electric control system starts a control program, the load sensitive variable pump 2 is started, the locking electromagnet 13 is electrified to pressurize the loop of the locking cylinder 35, and the pressurizing is stopped when the pressure requirement of the locking loop is met.
When the crusher works normally, the rodless cavity of the release cylinder 38 needs to be ensured to be kept in a certain pressure range, and when the pressure of the first pressure sensor 32 is detected to be lower than the requirement, the electric control system starts a control program, starts the load-sensitive variable pump 2 and energizes the release electro-hydraulic valve 23. The release cylinder rodless chamber circuit is pressurized and when pressure is required, the pressurization is stopped.
The discharge opening of the MC multi-cylinder cone crusher is adjusted by a hydraulic motor 34, and the initial state of the discharge opening needs to be calibrated by a calibration procedure. When the calibration program is operated, the electric control system starts a control program, the load-sensitive variable pump 2 is started, the electro-hydraulic valve 7 is adjusted to be electrified, the hydraulic motor 34 starts to rotate clockwise, the discharge port starts to decrease, when the lining plate is in contact, the third pressure sensor 6 is detected to increase to a certain value, the discharge port at the position is judged to be 0, the action of decreasing the discharge port is stopped, then the electro-hydraulic valve 7 is adjusted to be electrified, the hydraulic motor 34 starts to rotate anticlockwise, when the discharge port increases to a required value, the action of increasing the discharge port is stopped, the load-sensitive variable pump 2 is stopped, and the calibration program is completed.
When the discharge port is manually adjusted, a button needs to be manually operated to start the load-sensitive variable pump 2, and the electromagnet for the discharge port action is firstly reduced or increased to be electrified. When the discharging is required to be rapidly increased or reduced, the speed regulating electromagnetic valve 8 needs to be electrified, so that the displacement of the hydraulic motor 34 is in a small position, the rotating speed of the hydraulic motor 34 is increased, and the adjustment of a discharging opening is accelerated.
When cleaning the cavity, a button needs to be manually operated to start the load-sensitive variable pump 2 and electrify the release electro-hydraulic valve 23, so that the cavity cleaning operation is realized. During rapid cavity cleaning, the differential electromagnetic valve 36 needs to be powered, so that the release cylinder forms a differential loop, and meanwhile, oil of the energy accumulator can also enter the release cylinder, so that the cavity cleaning speed is accelerated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A multi-cylinder cone crusher hydraulic control system is characterized in that: the hydraulic control system comprises a load sensitive variable pump, a release circuit, a locking circuit and a discharge port hydraulic adjusting circuit, wherein the release circuit, the locking circuit and the discharge port hydraulic adjusting circuit are connected with an oil outlet of the load sensitive variable pump in parallel, a control oil circuit is arranged on the load sensitive variable pump, a highest load feedback shuttle valve is arranged on the control oil circuit, an oil inlet on one side of the highest load feedback shuttle valve is connected with the release circuit, and an oil inlet on the other side of the highest load feedback shuttle valve is respectively connected with the locking circuit and the discharge port hydraulic adjusting circuit.
2. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 1, wherein: the release loop comprises a release cylinder, a rod cavity oil way connected with a rod cavity of the release cylinder, a rodless cavity oil way connected with a rodless cavity of the release cylinder and a release oil return oil way, the rod cavity oil way and the rodless cavity oil way are connected with an oil outlet of the load sensitive variable displacement pump through release electro-hydraulic valves, the release oil return oil way is respectively connected with the release electro-hydraulic valves and an oil tank, the rod cavity oil way and the rodless cavity oil way are connected through release cylinder load shuttle valves, and the oil outlet of the release cylinder load shuttle valves is connected with an oil inlet of the highest load feedback shuttle valve.
3. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 2, wherein: and a release pressure control oil path is branched at the connection part of the oil outlet of the load shuttle valve of the release cylinder and the oil inlet of the highest load feedback shuttle valve, the release pressure control oil path is connected with an oil tank, and a release overflow valve is arranged on the release pressure control oil path.
4. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 3, wherein: the hydraulic control system is characterized in that a one-way throttle valve and a safety valve are sequentially arranged on a rodless cavity oil path between a release cylinder load shuttle valve and a release cylinder, an oil inlet of the safety valve is connected with a rod cavity of the release cylinder, a hydraulic control one-way valve, a small energy accumulator and a large energy accumulator are sequentially arranged on a rod cavity oil path between the release cylinder load shuttle valve and the release cylinder, a hydraulic control oil path is arranged on the hydraulic control one-way valve, the hydraulic control oil path is connected with a rodless cavity oil path, and the inflation pressure of the large energy accumulator is greater than that of the small energy accumulator.
5. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 4, wherein: a rod cavity oil way between the hydraulic control one-way valve and the small energy accumulator and a rodless cavity oil way between the one-way throttle valve and the safety valve are connected through a differential electromagnetic valve; a manual pressure relief oil way is arranged on a branch of an oil way of the rod cavity between the differential electromagnetic valve and the hydraulic control one-way valve and connected with an oil tank, and a first pressure sensor, a first pressure gauge and a first throttle valve are sequentially arranged on the manual pressure relief oil way.
6. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 5, wherein: the locking loop comprises a locking oil cylinder, a locking working oil path and a locking oil supplementing path, the locking working oil path is respectively connected with a load sensitive variable pump and the locking oil cylinder, a locking throttle valve, a locking electromagnetic valve and a locking one-way valve are sequentially arranged on the locking working oil path, the locking oil supplementing path is respectively connected with the locking electromagnetic valve and an oil tank, a locking control oil path is arranged on a branch of the working oil path between the locking electromagnetic valve and the locking one-way valve, a locking oil cylinder feedback shuttle valve is arranged on the locking control oil path, an oil outlet of the locking oil cylinder feedback shuttle valve is connected with an oil inlet of the highest load feedback shuttle valve, a locking pressure control oil path is arranged on a branch of the locking control oil path, the locking pressure control oil path is connected with the oil tank, and a locking overflow valve is arranged on the locking pressure control oil path.
7. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 6, wherein: the locking oil return line is arranged on a locking working oil line between the locking one-way valve and the locking oil cylinder in a branching mode, the locking oil return line is connected with the oil tank, the locking oil return solenoid valve and the locking oil return overflow valve are sequentially arranged on the locking oil return line, the locking pressure maintaining oil line is arranged on a locking working oil line between the locking oil return line and the locking one-way valve in a branching mode, the locking pressure maintaining oil line is connected with the oil tank, and the locking pressure maintaining oil line is sequentially provided with a second pressure gauge, a second pressure sensor, a pressure relief solenoid valve, a pressure maintaining energy accumulator and a second throttle valve.
8. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 7, wherein: the discharge port hydraulic adjusting loop comprises a hydraulic motor, a motor left side working oil path connected with a left side oil port of the hydraulic motor, a motor right side working oil path connected with a right side oil port of the hydraulic motor, an adjusting electro-hydraulic valve, a hydraulic working oil path and an adjusting oil return path, wherein the hydraulic working oil path and the adjusting oil return path are respectively connected with an oil outlet of the adjusting electro-hydraulic valve and an oil outlet of the load sensitive variable pump, the adjusting electro-hydraulic valve is connected with the oil outlet of the load sensitive variable pump through the hydraulic working oil path, the adjusting oil return path is respectively connected with the adjusting electro-hydraulic valve and an oil tank, and a third pressure gauge and a third pressure sensor are arranged on the hydraulic working oil path.
9. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 8, wherein: the hydraulic working oil circuit branch is provided with a motor speed-regulating oil circuit, the motor speed-regulating oil circuit is connected with a hydraulic motor oil drain port, the motor speed-regulating oil circuit is provided with a speed-regulating electromagnetic valve, and the speed-regulating electromagnetic valve is provided with a speed-regulating oil return circuit which is connected with an oil tank through the speed-regulating oil return circuit.
10. The hydraulic control system of a multi-cylinder cone crusher as claimed in claim 9, wherein: the hydraulic adjusting loop of the discharge port further comprises a balance valve, a working oil path on the left side of the motor is connected with a working oil path on the right side of the motor through the balance valve, a hydraulic brake is further arranged on the hydraulic motor, a hydraulic control oil path is arranged on the hydraulic brake, a hydraulic control shuttle valve is arranged at an oil inlet of the hydraulic control oil path, two oil inlets of the hydraulic control shuttle valve are respectively connected with the working oil path on the left side of the motor and the working oil path on the right side of the motor, and a branch of the hydraulic control oil path is connected with an oil inlet of a feedback shuttle valve of a locking oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221234264.XU CN217502110U (en) | 2022-05-23 | 2022-05-23 | Hydraulic control system of multi-cylinder cone crusher |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221234264.XU CN217502110U (en) | 2022-05-23 | 2022-05-23 | Hydraulic control system of multi-cylinder cone crusher |
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| CN217502110U true CN217502110U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221234264.XU Active CN217502110U (en) | 2022-05-23 | 2022-05-23 | Hydraulic control system of multi-cylinder cone crusher |
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| Country | Link |
|---|---|
| CN (1) | CN217502110U (en) |
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2022
- 2022-05-23 CN CN202221234264.XU patent/CN217502110U/en active Active
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