Hydraulic control valve for multi-cylinder cone crusher

Abstract

The utility model discloses a hydraulic control valve for a multi-cylinder cone crusher, which comprises a locking oil way and a driving oil way, the locking oil way is connected with a locking cylinder, the driving oil way comprises a main oil way and an auxiliary oil way, the main oil way is connected with a main driving pump, the auxiliary oil way is connected with an auxiliary driving pump, and the auxiliary driving pump is connected with a hydraulic cylinder. The main driving pump and the auxiliary driving pump are connected with the same output shaft, driving electromagnetic valves are arranged on the main oil channel and the auxiliary oil channel, the driving oil channel comprises a hydraulic motor and a release cylinder, and the main oil channel and the auxiliary oil channel are connected with the hydraulic motor. According to the hydraulic control valve for the multi-cylinder cone crusher, the multi-stage control effect can be achieved, meanwhile, the integration level of the whole control valve can be improved, and operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crusher technical field especially relates to a kind of hydraulic control valve for multi-cylinder cone crusher. BACKGROUND

[0002] For example, the publication number "CN221921516U" discloses "an integrated system for controlling multiple multi-cylinder cone crushers", comprising integrated oil station and multiple-way valve matched with the number of multi-cylinder cone crushers, each multi-cylinder cone crusher is controlled by a corresponding multiple-way valve, multiple-way valve is used to control the action of the execution element of multi-cylinder cone crusher, the integrated oil station includes hydraulic oil cavity and lubricating oil cavity, integrated oil station provides hydraulic oil and lubricating oil for all multi-cylinder cone crushers;It also includes action switch valve, the multiple-way valve is provided with control oil port for providing hydraulic oil for the execution element of multi-cylinder cone crusher, the control oil port on each multiple-way valve is independently controlled by corresponding action switch valve, and the action switch valve is connected with the oil outlet of working pump.But in actual application, this kind of structure cannot achieve hierarchical control, control is more cumbersome, and the integration degree is poor. SUMMARY

[0003] In view of the poor integration and the inability to control hierarchically of the prior art mentioned in the background art, the utility model provides a kind of hydraulic control valve for multi-cylinder cone crusher, can realize the control effect of multiple stages, simultaneously can improve the integration degree of entire control valve, and it is convenient to operate.

[0004] To achieve the above object, the utility model adopts the following technical scheme.

[0005] The utility model provides a hydraulic control valve for multi -cylinder cone crusher, including locking oil circuit and drive oil circuit, locking cylinder is connected to the locking oil circuit, drive oil circuit includes main oil channel and auxiliary oil channel, main oil channel connects main drive pump, auxiliary oil channel is connected with auxiliary drive pump, main drive pump and auxiliary drive pump connect same output shaft, drive solenoid valve is provided on main oil channel and auxiliary oil channel, drive oil circuit includes hydraulic motor and release cylinder, main oil channel and auxiliary oil channel are connected hydraulic motor, in the application, three oil circuits are provided, and they are locking oil circuit and main oil channel, auxiliary oil channel, wherein main oil channel and auxiliary oil channel are drive oil circuit, three oil circuits are connected with corresponding pump, wherein locking oil circuit is connected with locking cylinder, and drive oil circuit is connected with hydraulic motor and release cylinder, locking cylinder can be controlled through solenoid valve on locking oil circuit and drive oil circuit respectively, thereby controlling the operation of different working conditions of equipment, wherein because main oil channel and auxiliary oil channel are connected with hydraulic motor, so the oil pressure on main oil channel and auxiliary oil channel can be delivered to hydraulic motor, because drive solenoid valve is provided on main oil channel and auxiliary oil channel, so drive solenoid valve can independently control the on-off control of oil delivery on main oil channel and auxiliary oil channel, because main drive pump and auxiliary drive pump are connected on the same output shaft, so in the working process, the oil inlet of hydraulic motor can be controlled by only controlling the on-off control of drive solenoid valve on main oil channel and auxiliary oil channel, when only drive solenoid valve on main oil channel is opened, the oil pressure on main oil channel drives hydraulic motor to work, at this time, hydraulic motor is low operation, when drive solenoid valve on auxiliary oil channel is opened, the oil pressure on auxiliary oil channel also enters hydraulic motor to drive, so that hydraulic motor can be driven by the oil pressure on main oil channel and auxiliary oil channel simultaneously, thereby realizing high speed motion, so that the step control of hydraulic motor can be realized, the flexibility in construction process is improved, hydraulic motor can be adjusted to the appropriate state according to actual construction demand, so that the construction efficiency can be improved, and because drive solenoid valve on main oil channel and auxiliary oil channel is relatively independent control unit, so main oil channel and auxiliary oil channel can independently drive hydraulic motor, so that the control effect of hydraulic motor is more stable, when one way of oil appears driving failure, the other way of oil can also continuously deliver, ensuring that hydraulic motor can continuously work.

[0006] As preferred, the main oil channel and the auxiliary oil channel are both connected with the release cylinder. Connecting the main oil channel and the auxiliary oil channel with the release cylinder, so that the main oil channel and the auxiliary oil channel can control the release cylinder, thereby improving the driving flexibility of the release cylinder, and providing two drive oil circuits, avoiding that the release cylinder cannot work stably due to the failure of one drive oil circuit.

[0007] As preferred, the main oil passage is provided with a first reversing solenoid valve, which is arranged between the hydraulic motor and the drive solenoid valve. The first reversing solenoid valve is arranged on the main oil passage, and the first reversing solenoid valve is provided with two inlet and outlet circuits, which can provide opposite oil supply, so as to control the hydraulic motor to rotate forward and reverse, so that the construction is more flexible.

[0008] As preferred, the main oil passage is provided with a second reversing solenoid valve, which is arranged between the release cylinder and the drive solenoid valve. The second reversing solenoid valve arranged on the main oil passage also has two inlet and outlet circuits, which can provide opposite oil supply, so as to make the oil supply of the release cylinder more flexible, realize the cylinder cleaning (piston up), pressurization (piston down), pressure maintaining, pressure relief (oil return above the piston) and other operations of the release cylinder, so as to make the control of the release cylinder more flexible, improve the work efficiency, and adapt to different use conditions.

[0009] As preferred, the auxiliary oil passage is communicated with the main oil passage, and the drive solenoid valves on the main oil passage and the auxiliary oil passage are arranged in parallel on the side away from the hydraulic motor of the first reversing solenoid valve. The auxiliary oil passage is communicated with the main oil passage, so that the oil in the auxiliary oil passage can also pass through the first reversing solenoid valve, and since the main oil passage and the auxiliary oil passage are parallel on the side away from the hydraulic motor of the first reversing solenoid valve, the main oil passage and the auxiliary oil passage can independently control the hydraulic motor, and can also synchronously control the hydraulic motor, and both pass through the first reversing solenoid valve, which can produce reversing effect.

[0010] As preferred, the auxiliary oil passage is communicated with the main oil passage, and the drive solenoid valves on the main oil passage and the auxiliary oil passage are arranged in parallel on the side away from the release cylinder of the second reversing solenoid valve. The auxiliary oil passage is communicated with the main oil passage, so that the oil in the auxiliary oil passage can also pass through the second reversing solenoid valve, and since the main oil passage and the auxiliary oil passage are parallel on the side away from the release cylinder of the second reversing solenoid valve, the main oil passage and the auxiliary oil passage can independently control the release cylinder, and can also synchronously control the release cylinder, and both pass through the second reversing solenoid valve, which can produce reversing effect.

[0011] As preferred, the release cylinder comprises a lower oil inlet line and an upper oil inlet line, and a hydraulic control check valve is arranged between the upper oil inlet line and the second reversing electromagnetic valve. The release cylinder comprises a lower oil inlet line and an upper oil inlet line, wherein the upper oil inlet line and the lower oil inlet line are respectively arranged at the upper and lower positions of the piston of the release cylinder, so that the upper and lower sides of the piston can be respectively supplied with oil and returned, thereby enabling different actions of the upper oil inlet line and the lower oil inlet line to generate different working conditions of the release cylinder, so that the release cylinder can realize multiple operations and improve the flexibility of the release cylinder; wherein the hydraulic control check valve is a valve that can enable reverse flow by controlling fluid pressure. This valve plays an important role in the hydraulic support equipment of coal mine machinery. The hydraulic control check valve is different from the ordinary check valve in that it has an additional control oil path. When the control oil path is not connected to the pressure oil, the hydraulic control check valve works like an ordinary check valve, and the pressure oil only flows from the inlet to the outlet, and cannot flow in the opposite direction. When the control oil path has a control pressure input, the piston rod moves to the right under the action of the pressure oil, opens the check valve with the rod, and connects the inlet and outlet. If the outlet is greater than the inlet, the oil can flow in the opposite direction. Therefore, in this application, the hydraulic control check valve can be opened as needed to realize the flow of the oil path in the forward and reverse directions.

[0012] As preferred, the locking oil path is provided with a locking return oil path, the locking return oil path is provided with a return oil line and a pressure maintaining line between the locking cylinder, the return oil line and the pressure maintaining line are arranged in parallel, the locking return oil path is provided with a locking return oil electromagnetic valve, and the pressure maintaining line is provided with a locking pressure maintaining electromagnetic valve. The locking oil path is provided with a locking return oil path, and the oil in the locking oil path is collected by the locking return oil path. The locking return oil path is provided with two lines, i.e., a return oil line and a pressure maintaining line, between the locking cylinder. The return oil line and the pressure maintaining line are arranged in parallel. The pressure maintaining line is arranged close to the locking cylinder, and the return oil line is arranged close to the locking return oil path. The return oil line and the pressure maintaining line are provided with electromagnetic valves, respectively. The return and pressure maintaining are controlled by the opening and closing of the electromagnetic valves. The pressure maintaining line is connected to an accumulator, and the pressure of the accumulator can be locked by the locking pressure maintaining electromagnetic valve, so that the next time the pressure of the locking cylinder is reduced.

[0013] As preferred, the pressure maintaining line and the return oil line are provided with a pressure maintaining pressure relief valve, the locking oil path is provided with a locking electromagnetic valve, the locking oil path is provided with a locking pressure relief valve close to the locking electromagnetic valve, and the pressure relief pressure of the pressure maintaining pressure relief valve is higher than that of the locking pressure relief valve. The pressure maintaining pressure relief valve is arranged between the pressure maintaining line and the return oil line, and the locking pressure relief valve is arranged close to the locking electromagnetic valve on the locking oil path. The pressure relief pressure of the pressure maintaining pressure relief valve is greater than that of the locking pressure relief valve, so that the pressure maintaining pressure relief valve does not work during the working period of the locking pressure relief valve, and only the oil in the pressure maintaining line is discharged from the pressure maintaining pressure relief valve after being impacted during the pressure maintaining process, thereby improving the protection of the entire oil path.

[0014] As preferred, a main drive relief valve is arranged on the main oil passage, and an auxiliary drive relief valve is arranged on the auxiliary oil passage, and the relief pressure of the auxiliary drive relief valve is less than the relief pressure of the main drive relief valve.

[0015] As preferred, the release cylinder is connected with a release return oil passage, and the release return oil passage comprises a plurality of parallel return oil units. The plurality of parallel return oil units are arranged on the release return oil passage, so that the oil can be returned through each return oil unit under different conditions, and the return oil units include but are not limited to electric control relief, hydraulic control relief, passive relief, etc.

[0016] The beneficial effects of the utility model are as follows:

[0017] (1) The multi-stage control effect can be realized, the integration of the entire control valve can be improved, and the operation is convenient.

[0018] (2) The hydraulic motor and the release cylinder can be controlled quickly, slowly and independently, so that the flexibility and stability of the entire control valve are improved.

[0019] (3) By changing the positive and negative supply of oil, various action controls of the hydraulic motor and the release cylinder can be realized, and the flexibility of the device is improved.

[0020] (4) The stability of the entire control valve in operation can be ensured by arranging various relief units. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The hydraulic oil passage in the static state of the utility model is shown.

[0022] Figure 2 The hydraulic oil passage in the locking cylinder pressurized state of the utility model is shown.

[0023] Figure 3 The hydraulic oil passage in the locking cylinder pressure maintaining state of the utility model is shown.

[0024] Figure 4 The hydraulic oil passage in the locking cylinder pressure releasing state of the utility model is shown.

[0025] Figure 5 The hydraulic oil passage in the rotating state of the hydraulic motor of the utility model is shown.

[0026] Figure 6 The hydraulic oil passage in the accelerated rotating state of the hydraulic motor of the utility model is shown.

[0027] Figure 7The hydraulic oil path under the release cylinder cavity releasing state is shown.

[0028] Figure 8 The hydraulic oil path under the release cylinder pressure state is shown.

[0029] Figure 9 The hydraulic oil path under the release cylinder pressure maintaining state is shown.

[0030] Figure 10 The hydraulic oil path under the release cylinder electric control pressure releasing state is shown.

[0031] Figure 11 The hydraulic oil path under the release cylinder hydraulic pressure releasing state is shown.

[0032] In the figure,

[0033] 1 locking oil path, 11 locking cylinder, 12 locking return oil path, 13 return oil line, 131 locking return oil electromagnetic valve, 14 pressure maintaining line, 141 locking pressure maintaining electromagnetic valve, 15 pressure maintaining pressure releasing valve, 16 locking electromagnetic valve, 17 locking pressure releasing valve, 18 accumulator, 19 locking throttle valve;

[0034] 2 driving oil path, 21 main oil channel, 211 main driving pump, 22 auxiliary oil channel, 221 auxiliary driving pump, 23 driving electromagnetic valve, 24 hydraulic motor, 25 release cylinder, 251 lower oil inlet line, 252 upper oil inlet line, 26 first reversing electromagnetic valve, 27 second reversing electromagnetic valve, 28 hydraulic control check valve, 29 release return oil path, 291 return oil unit;

[0035] 3 pressure sensor. DETAILED DESCRIPTION

[0036] The utility model will be further described below in combination with the drawings and specific embodiments.

[0037] Embodiment 1:

[0038] As Figure 1As shown, a hydraulic control valve for a multi-cylinder cone crusher, including a locking oil circuit 1 and a drive oil circuit 2, the locking oil circuit 1 is connected with a locking cylinder 11, the drive oil circuit 2 includes a main oil way 21 and an auxiliary oil way 22, the main oil way 21 is connected with a main drive pump 211, the auxiliary oil way 22 is connected with an auxiliary drive pump 221, the main drive pump and the auxiliary drive pump 221 are connected with the same output shaft, the main oil way 21 and the auxiliary oil way 22 are both provided with a drive electromagnetic valve 23, the drive oil circuit 2 includes a hydraulic motor 24 and a release cylinder 25, the main oil way 21 and the auxiliary oil way 22 are both connected with the hydraulic motor 24. In this application, three oil circuits are provided, which are the locking oil circuit 1 and the main oil way 21 and the auxiliary oil way 22, among which the main oil way 21 and the auxiliary oil way 22 are the drive oil circuit 2, the three oil circuits are connected with corresponding pumps respectively, among which the locking oil circuit 1 is connected with the locking cylinder 11, and the drive oil circuit 2 is connected with the hydraulic motor 24 and the release cylinder 25, the locking cylinder 11 can control the operation of different working conditions of the equipment by controlling the electromagnetic valves on the locking oil circuit 1 and the drive oil circuit 2 respectively, among which the main oil way 21 and the auxiliary oil way 22 are both connected with the hydraulic motor 24, so the oil pressure on the main oil way 21 and the auxiliary oil way 22 can be delivered to the hydraulic motor 24, and the drive electromagnetic valve 23 on the main oil way 21 and the auxiliary oil way 22 can be independently controlled, and because the main drive pump and the auxiliary drive pump 221 are connected on the same output shaft, only the drive electromagnetic valve 23 on the main oil way 21 and the auxiliary oil way 22 needs to be controlled during the working process, which can control the oil inlet of the hydraulic motor 24, when only the drive electromagnetic valve 23 on the main oil way 21 is opened, the oil pressure on the main oil way 21 drives the hydraulic motor 24 to work, at this time the hydraulic motor 24 is in low-speed operation, when the drive electromagnetic valve 23 on the auxiliary oil way 22 is opened, the oil pressure on the auxiliary oil way 22 also enters the hydraulic motor 24 to drive, so that the hydraulic motor 24 can be driven by the oil pressure on the main oil way 21 and the auxiliary oil way 22 at the same time, thereby realizing high-speed motion, so as to realize the step control of the hydraulic motor 24, improve the flexibility in the construction process, and adjust the hydraulic motor 24 to the appropriate state according to the actual construction demand, thereby improving the construction efficiency; at the same time, because the drive electromagnetic valves 23 on the main oil way 21 and the auxiliary oil way 22 are relatively independent control units, the main oil way 21 and the auxiliary oil way 22 can independently drive the hydraulic motor 24, so that the control effect of the hydraulic motor 24 is more stable, when one of the oil circuits fails, the other oil circuit can continue to deliver oil, ensuring that the hydraulic motor 24 can continue to work.

[0039] As Figure 1As shown, the main oil passage 21 and the auxiliary oil passage 22 are both connected to the release cylinder 25. Connecting the main oil passage 21 and the auxiliary oil passage 22 to the release cylinder 25 enables the main oil passage 21 and the auxiliary oil passage 22 to control the release cylinder 25, thereby improving the driving flexibility of the release cylinder 25 and providing two driving oil paths 2 to avoid the failure of one of the driving oil paths 2 to cause the release cylinder 25 to fail to work stably.

[0040] As shown, the main oil passage 21 is provided with a first reversing solenoid valve 26, which is arranged between the hydraulic motor 24 and the driving solenoid valve 23. The first reversing solenoid valve 26 is arranged on the main oil passage 21 and is provided with two inlet and outlet circuits, which can provide opposite oil supplies, thereby enabling the hydraulic motor 24 to be controlled to rotate forward and reverse, making the construction more flexible. Figure 5

[0041] As shown, the main oil passage 21 is provided with a second reversing solenoid valve 27, which is arranged between the release cylinder 25 and the driving solenoid valve 23. The second reversing solenoid valve 27 arranged on the main oil passage 21 also has two inlet and outlet circuits, which can provide opposite oil supplies, thereby enabling the oil supply to the release cylinder 25 to be more flexible and variable, realizing the cylinder cleaning (piston up), pressurization (piston down), pressure maintaining, pressure relief (oil return above the piston), and other operations of the release cylinder 25, thereby making the control of the release cylinder 25 more flexible, improving the work efficiency, and being able to adapt to various different use conditions. Figure 6

[0042] As shown, the auxiliary oil passage 22 is communicated with the main oil passage 21, and the driving solenoid valves 23 on the main oil passage 21 and the auxiliary oil passage 22 are arranged in parallel on the side of the first reversing solenoid valve 26 away from the hydraulic motor 24. The auxiliary oil passage 22 is communicated with the main oil passage 21, so that the oil inlet in the auxiliary oil passage 22 can also pass through the first reversing solenoid valve 26. Since the main oil passage 21 and the auxiliary oil passage 22 are arranged in parallel on the side of the first reversing solenoid valve 26 away from the hydraulic motor 24, the main oil passage 21 and the auxiliary oil passage 22 can independently control the hydraulic motor 24, can synchronously control the hydraulic motor 24, and both pass through the first reversing solenoid valve 26 to produce a reversing effect. Figure 5

[0043] Figure 6 ​​​​As shown, the auxiliary oil passage 22 is communicated with the main oil passage 21, and the driving electromagnetic valves 23 on the main oil passage 21 and the auxiliary oil passage 22 are arranged in parallel on the side of the second reversing electromagnetic valve 27 away from the release cylinder 25. The auxiliary oil passage 22 is communicated with the main oil passage 21, so that the oil in the auxiliary oil passage 22 can also pass through the second reversing electromagnetic valve 27, and because the main oil passage 21 and the auxiliary oil passage 22 are in parallel on the side of the second reversing electromagnetic valve 27 away from the release cylinder 25, the main oil passage 21 and the auxiliary oil passage 22 can independently control the release cylinder 25, can also synchronously control the release cylinder 25, and both pass through the second reversing electromagnetic valve 27, which can produce a reversing effect.

[0044] As shown in Figure 7 , 8 , the release cylinder 25 includes a lower oil inlet line 251 and an upper oil inlet line 252, and a hydraulic control check valve 28 is arranged between the upper oil inlet line 252 and the second reversing electromagnetic valve 27. The release cylinder 25 includes the lower oil inlet line 251 and the upper oil inlet line 252, and the upper oil inlet line 252 and the lower oil inlet line 251 are respectively located at the upper and lower positions of the piston of the release cylinder 25, so that the upper and lower sides of the piston can be respectively transported and returned by oil, thereby different actions of the upper oil inlet line 252 and the lower oil inlet line 251 can be performed to produce different working conditions of the release cylinder 25, so that the release cylinder 25 can realize various operations and improve the flexibility of the release cylinder 25.

[0045] As shown in Figure 2 , 3 , 4, the locking oil circuit 1 is provided with a locking return oil circuit 12, and the locking return oil circuit 12 is provided with a return oil line 13 and a pressure maintaining line 14 between the locking cylinder 11, the return oil line 13 and the pressure maintaining line 14 are arranged in parallel, the locking return oil electromagnetic valve 131 is arranged on the return oil line 13, and the locking pressure maintaining electromagnetic valve 141 is arranged on the pressure maintaining line 14. The locking oil circuit 1 is provided with the locking return oil circuit 12, and the oil in the locking oil circuit 1 is collected by the locking return oil circuit 12, wherein two lines are arranged between the locking return oil circuit 12 and the locking cylinder 11, which are the return oil line 13 and the pressure maintaining line 14, and the return oil line 13 and the pressure maintaining line 14 are arranged in parallel, the pressure maintaining line 14 is arranged close to the locking cylinder 11, and the return oil line 13 is arranged close to the locking return oil circuit 12, wherein the electromagnetic valves are arranged on the return oil line 13 and the pressure maintaining line 14, and the control of the return and pressure maintaining is realized by the on-off of the electromagnetic valves, the accumulator 18 is connected to the pressure maintaining line 14, and the pressure of the accumulator 18 can be locked by the locking pressure maintaining electromagnetic valve 141, so that the next time of the locking cylinder 11 is reduced.

[0046] As shown in Figure 2 , 3As shown in Figure 4, a pressure-holding relief valve 15 is installed between the pressure-holding line 14 and the return oil line 13. A locking solenoid valve 16 is installed on the locking oil circuit 1, and a locking relief valve 17 is installed on the side of the locking oil circuit 1 near the locking solenoid valve 16. The pressure relief pressure of the pressure-holding relief valve 15 is higher than that of the locking relief valve 17. By controlling the pressure relief valve 15 to be greater than that of the locking relief valve 17, the pressure-holding relief valve 15 does not operate during the operation of the locking relief valve 17. Only during the pressure-holding process, after an impact, does the oil in the pressure-holding line 14 discharge from the pressure-holding relief valve 15, thus improving the protection of the entire oil circuit.

[0047] A main drive pressure relief valve is installed on the main oil passage 21, and an auxiliary drive pressure relief valve is installed on the auxiliary oil passage 22. The pressure relief pressure of the auxiliary drive pressure relief valve is less than that of the main drive pressure relief valve.

[0048] like Figure 9 , 10 As shown in Figure 11, the release cylinder 25 is connected to a release return oil passage 29, which includes several parallel return oil units 291. By setting multiple parallel return oil units 291 on the release return oil passage 29, oil can be returned through each return oil unit 291 under different conditions. The return oil units 291 include, but are not limited to, electrically controlled pressure relief, hydraulically controlled pressure relief, and passive pressure relief. By setting different components, pressure relief under different operating conditions can be achieved, ensuring the stability of the return oil.

[0049] The locking cylinder 11 is mainly used to lock the adjusting nut at the discharge port of the multi-cylinder cone crusher. When the crusher is running, the release cylinder 25 maintains a certain pressure to prevent the adjusting nut from loosening.

[0050] The hydraulic motor 24 is mainly used to rotate the discharge port adjusting nut to increase or decrease the discharge port size. The hydraulic motor 24 is prohibited from running when the locking cylinder 11 is locked. The hydraulic motor 24 is only allowed to run when the pressure of the locking cylinder 11 is lower than a certain value.

[0051] The release cylinder 25 is mainly used to pull the upper frame down during the operation of the multi-cylinder cone crusher, maintaining a certain pressure. This is similar to the locking cylinder 11. However, the release cylinder 25 also needs to have the function of pushing upward to clear the cavity, while the locking cylinder 11 only needs to satisfy the clamping in one direction. Therefore, the working principles of the release cylinder 25 and the locking cylinder 11 are different, and they have different flow channels.

[0052] Figure 1 When stationary, the hydraulic motor is not running and there is no hydraulic oil output.

[0053] Figure 2 Locking cylinder 11 pressurized state, motor driven triplex pump operation, locking solenoid valve 16 work (the solenoid valve in the figure is set with color block for solenoid valve work, the following content is synchronized), locking oil way 1 on the pump output hydraulic oil filled locking cylinder 11 and accumulator 18, the current flow channel real-time pressure condition can connect pressure sensor or pressure gauge to monitor. If the pressure exceeds the set pressure, hydraulic oil will flow from the locking relief valve 17. Drive oil way 2 corresponding to the drive solenoid valve 23 is not running, the corresponding hydraulic element hydraulic motor 24 and release cylinder 25 will not act.

[0054] Figure 3 Locking cylinder 11 pressure holding state, motor stop, hydraulic oil is locked in the flow channel, if the locking cylinder 11 is impacted at this time, hydraulic oil will be released from the pressure relief valve 15, the pressure relief valve 15 of the locking relief valve 17, so that the pressure relief valve 15 in Figure 1 State does not work.

[0055] Figure 4 Locking cylinder 11 pressure relief, motor stop, locking return solenoid valve 131 work, hydraulic oil from the locking return solenoid valve 131 back to the tank. If the solenoid valve can not be started, the locking choke valve 19 can also be used to put the hydraulic oil into the tank.

[0056] Figure 5 Hydraulic motor 24 rotation, hydraulic motor operation, locking oil way 1 and auxiliary oil way in the corresponding locking solenoid valve 16 and drive solenoid valve 23 does not work, only the main oil way 21 in the corresponding drive solenoid valve 23 work, as shown in the figure, one end of the first reversing solenoid valve 26 work hydraulic motor 24 to one direction, the other end of the first reversing solenoid valve 26 work hydraulic motor 24 movement is contrary. Locking return solenoid valve 131 work is to unload the pressure of locking cylinder 11, the locking cylinder 11 of multi-cylinder cone crusher will be stuck when there is a certain pressure. Locking pressure holding solenoid valve 141 run is to lock the pressure of accumulator 18, so that the locking cylinder 11 quickly unload pressure, and quickly supplement the pressure after the hydraulic motor 24 adjustment is completed.

[0057] Figure 6 Hydraulic motor 24 acceleration rotation, Figure 6 And Figure 5 The difference is that the auxiliary oil way 22 participates in the work of hydraulic motor 24, so as to provide greater flow for hydraulic motor 24, so as to achieve the effect of accelerating the operation of hydraulic motor 24.

[0058] Figure 7When the release cylinder 25 is cleared, the motor runs, and the hydraulic pumps in the locking oil passage and auxiliary oil passage 22 do not participate in oil supply. The drive solenoid valve 23 and the second reversing solenoid valve 27 on the main oil passage 21 are working. Hydraulic oil enters from below the release cylinder 25 and lifts the release cylinder 25. Hydraulic return oil returns from above the hydraulic cylinder. At the same time, there is a hydraulic control check valve 28 here, which can only be opened when the release cylinder 25 is cleared, so that the hydraulic oil can return smoothly.

[0059] Figure 8 The release cylinder 25 is pressurized, and Figure 7 Similarly, the other end of the second reversing solenoid valve 27 opens, and the release cylinder 25 is pressed down. The hydraulic control check valve 28 in the figure is used to better maintain the pressure of the release cylinder 25. When the multi-cylinder cone crusher is running, the release cylinder 25 must be kept at a certain pressure. Here, the oil can be guaranteed to flow upward through the hydraulic control check valve 28.

[0060] Figure 9 The release cylinder 25 maintains pressure, and the hydraulic oil fills the upper oil pipe of the release cylinder 25 and flows out from the upper oil inlet line 252. Its pressure can be observed by connecting a pressure sensor or a pressure switch.

[0061] Figure 10 To electrically depressurize the release cylinder 25, one of the return oil units 291 in the release return oil circuit 29 is opened. In this embodiment, the return oil unit 291 equipped with a solenoid valve and a throttle valve is opened. The hydraulic oil depressurized by the release cylinder 25 flows out from the upper oil inlet line 252 of the release cylinder 25, releasing the pressure. This is different from the clearing of the release cylinder 25, which would lift the release cylinder 25, while depressurization keeps the release cylinder 25 stationary.

[0062] Figure 11 To release pressure in hydraulic mode in cylinder 25, in the absence of electricity, the throttle valve on the second return oil unit 291 (the return oil unit 291 equipped with a throttle valve) can be opened directly to achieve the effect of pressure relief.

Claims

1. A hydraulic control valve for a multi-cylinder cone crusher, characterized in that, The locking oil circuit is connected with a locking cylinder, the driving oil circuit includes a main oil channel and an auxiliary oil channel, the main oil channel is connected with a main driving pump, the auxiliary oil channel is connected with an auxiliary driving pump, the main driving pump and the auxiliary driving pump are connected with the same output shaft, the main oil channel and the auxiliary oil channel are both provided with a driving electromagnetic valve, the driving oil circuit includes a hydraulic motor and a release cylinder, and the main oil channel and the auxiliary oil channel are both connected with the hydraulic motor.

2. A hydraulic control valve for a multi-cylinder cone crusher as claimed in claim 1, characterized in that The main oil channel and the auxiliary oil channel are both connected with the release cylinder.

3. A hydraulic control valve for a multi-cylinder cone crusher as claimed in claim 1, characterized in that The main oil channel is provided with a first reversing electromagnetic valve, and the first reversing electromagnetic valve is arranged between the hydraulic motor and the driving electromagnetic valve.

4. A hydraulic control valve for a multi-cylinder cone crusher as claimed in claim 1, characterized in that The main oil channel is provided with a second reversing electromagnetic valve, and the second reversing electromagnetic valve is arranged between the release cylinder and the driving electromagnetic valve.

5. A hydraulic control valve for a multi-cylinder cone crusher as claimed in claim 3, characterized in that, The auxiliary oil channel is communicated with the main oil channel, and the driving electromagnetic valves on the main oil channel and the auxiliary oil channel are arranged in parallel on the side, away from the hydraulic motor, of the first reversing electromagnetic valve.

6. A hydraulic control valve for a multi-cylinder cone crusher as claimed in claim 4, characterized in that The auxiliary oil channel is communicated with the main oil channel, and the driving electromagnetic valves on the main oil channel and the auxiliary oil channel are arranged in parallel on the side, away from the release cylinder, of the second reversing electromagnetic valve.

7. A hydraulic control valve for a multi-cylinder cone crusher as claimed in claim 4, characterized in that The release cylinder includes a lower oil inlet line and an upper oil inlet line, and a hydraulic control check valve is arranged between the upper oil inlet line and the second reversing electromagnetic valve.

8. A hydraulic control valve for a multi-cylinder cone crusher according to any of claims 1 - 7, characterized in that, The locking oil circuit is provided with a locking return oil circuit, a return oil line and a pressure maintaining line are arranged between the locking return oil circuit and the locking cylinder, the return oil line and the pressure maintaining line are arranged in parallel, a locking return oil electromagnetic valve is arranged on the return oil line, and a locking pressure maintaining electromagnetic valve is arranged on the pressure maintaining line.

9. A hydraulic control valve for a multi-cylinder cone crusher as claimed in claim 8, characterized in that A pressure maintaining and pressure releasing valve is arranged between the pressure maintaining line and the return oil line, a locking electromagnetic valve is arranged on the locking oil circuit, a locking pressure releasing valve is arranged on the side, close to the locking electromagnetic valve, of the locking oil circuit, and the pressure releasing pressure of the pressure maintaining and pressure releasing valve is higher than the pressure releasing pressure of the locking pressure releasing valve.

10. A hydraulic control valve for a multi-cylinder cone crusher according to any of claims 1 - 7, characterized in that, The release cylinder is connected with a release return oil circuit, and the release return oil circuit includes a plurality of parallel return oil units.

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