Multi-cylinder cone crusher hydraulic system and control method thereof

Abstract

The present invention relates to a multi-cylinder cone crusher hydraulic system, comprising a main oil circuit and three branch oil circuits: a locking cylinder circuit, a hydraulic motor circuit, and a release cylinder circuit. The locking cylinder circuit is provided with a locking cylinder circuit metering pump, which connects the locking cylinder to the main oil circuit; the hydraulic motor circuit is provided with a hydraulic motor circuit metering pump, which connects the hydraulic motor to the main oil circuit; and the release cylinder circuit is provided with a release cylinder circuit metering pump, which connects the release cylinder to the main oil circuit. In the present invention, the locking cylinder circuit, the hydraulic motor circuit, and the release cylinder circuit can be supplied with oil independently or can draw oil from the main oil circuit.

Description

Technical Field

[0001] The invention belongs to the field of hydraulic technology and relates to a hydraulic system of a multi-cylinder cone crusher. Background Art

[0002] Typically, the hydraulic system of a multi-cylinder cone crusher is supplied by a single oil pump or by multiple oil pumps that separately supply oil to the locking, regulating, and release circuits. The flow rate of each circuit is not adjustable, and fast or slow speed adjustment is impossible. Each oil circuit branches off from the main oil circuit, and its operating pressure is the same as the main oil circuit. This results in throttling pressure loss in the oil circuit, significant energy loss, and low operating efficiency. When each oil pump supplies oil to each branch oil circuit independently, it is impossible for each pump to simultaneously supply oil to the main oil circuit. Summary of the Invention

[0003] In order to resolve the contradiction that a single oil circuit can work independently and each oil pump can supply oil to the main oil circuit at the same time, and at the same time improve the working efficiency of the system, the present invention provides a multi-cylinder cone crusher hydraulic system, which adopts multiple quantitative pumps and multiple solenoid valves to realize the oil supply of each oil circuit. The oil supply of each branch oil circuit takes precedence over the main oil circuit, and the flow of each branch oil circuit can realize multiple flow control.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a multi-cylinder cone crusher hydraulic system, including a main oil circuit and three branch oil circuits: a locking cylinder circuit, a hydraulic motor circuit, and a release cylinder circuit. The locking cylinder circuit is provided with a locking cylinder circuit metering pump, and the locking cylinder circuit connects the locking cylinder and the main oil circuit. The hydraulic motor circuit is provided with a hydraulic motor circuit metering pump, and the hydraulic motor circuit connects the hydraulic motor and the main oil circuit. The release cylinder circuit is provided with a release cylinder circuit metering pump, and the release cylinder circuit connects the release cylinder and the main oil circuit.

[0005] More specifically, the locking cylinder circuit also includes a locking cylinder circuit solenoid valve I, a locking cylinder circuit solenoid valve II, and a locking cylinder circuit solenoid valve III. The oil outlet of the locking cylinder circuit metering pump is connected to the locking cylinder circuit pressure gauge II, the oil outlet of the locking cylinder circuit metering pump is connected to the locking cylinder circuit overflow valve I and the oil inlet of the locking cylinder circuit solenoid valve I, the first working oil port of the locking cylinder circuit solenoid valve I is connected to the main oil circuit, the second working oil port of the locking cylinder circuit solenoid valve I is connected to the oil outlet of the locking cylinder circuit solenoid valve II and the oil inlet of the locking cylinder circuit solenoid valve III, and the return oil port of the locking cylinder circuit solenoid valve I is connected to the return oil Box; the oil inlet of the locking cylinder circuit solenoid valve II is connected to the main oil circuit, and the oil outlet of the locking cylinder circuit solenoid valve II is connected to the oil inlet of the locking cylinder circuit solenoid valve III; the oil return port of the locking cylinder circuit solenoid valve III is connected back to the oil tank, the working oil port of the locking cylinder circuit solenoid valve III is connected to the locking cylinder circuit hydraulic control one-way valve and the locking cylinder circuit relief valve II, the locking cylinder circuit hydraulic control one-way valve is connected to the locking cylinder accumulator, the locking cylinder circuit relief valve II is connected to the oil tank, the stop valve, and the locking cylinder circuit relief valve III, the stop valve is connected to the locking cylinder circuit pressure sensor, and the locking cylinder circuit relief valve III is connected to the locking cylinder and the locking cylinder circuit pressure gauge I.

[0006] More specifically, the locking cylinder circuit solenoid valve I is provided with an electromagnet SQL1 for controlling the first working oil port and an electromagnet SQL2 for controlling the second working oil port, the locking cylinder circuit solenoid valve II is provided with an electromagnet SQL7, and the locking cylinder circuit solenoid valve III is provided with an electromagnet SQL10 and an electromagnet SQL11 for controlling the two working oil ports.

[0007] More specifically, the hydraulic motor circuit includes a hydraulic motor circuit solenoid valve I, a hydraulic motor circuit solenoid valve II, a hydraulic motor circuit solenoid valve III, and a hydraulic motor circuit overflow valve. The oil outlet of the hydraulic motor circuit metering pump is connected to the hydraulic motor circuit pressure gauge, and the oil outlet of the hydraulic motor circuit metering pump is connected to the hydraulic motor circuit overflow valve and the oil inlet of the hydraulic motor circuit solenoid valve I; the first working oil port of the hydraulic motor circuit solenoid valve I is connected to the main oil circuit, the second working oil port of the hydraulic motor circuit solenoid valve I is connected to the oil outlet of the hydraulic motor circuit solenoid valve II, the oil inlet of the hydraulic motor circuit solenoid valve III and the hydraulic motor pressure sensor, and the return oil port of the hydraulic motor circuit solenoid valve I is connected to the return oil tank; the oil inlet of the hydraulic motor circuit solenoid valve II is connected to the main oil circuit, and the oil outlet of the hydraulic motor circuit solenoid valve II is connected to the oil inlet of the hydraulic motor circuit solenoid valve III; the working oil port of the hydraulic motor circuit solenoid valve III is connected to the hydraulic motor and the shuttle valve, and the return oil port of the hydraulic motor circuit solenoid valve III is connected to the return oil tank.

[0008] More specifically, the hydraulic motor circuit solenoid valve I is provided with an electromagnet SQL3 for controlling the first working oil port and an electromagnet SQL4 for controlling the second working oil port, the hydraulic motor circuit solenoid valve II is provided with an electromagnet SQL8, and the hydraulic motor circuit solenoid valve III is provided with an electromagnet SQL12 and an electromagnet SQL13 for controlling the two working oil ports.

[0009] More specifically, the release cylinder circuit includes a release cylinder circuit solenoid valve Ⅰ, a release cylinder circuit solenoid valve Ⅱ, a release cylinder circuit solenoid valve Ⅲ, and a release cylinder circuit overflow valve Ⅲ; the release cylinder circuit metering pump is connected to the motor, the oil outlet of the release cylinder circuit metering pump is connected to the release cylinder circuit pressure gauge Ⅱ, the oil outlet of the release cylinder circuit metering pump is connected to the release cylinder circuit overflow valve Ⅲ and the oil inlet of the release cylinder circuit solenoid valve Ⅰ; the first working oil port of the release cylinder circuit solenoid valve Ⅰ is connected to the main oil circuit, the second working oil port of the release cylinder circuit solenoid valve Ⅰ is connected to the oil outlet of the release cylinder circuit solenoid valve Ⅱ and the oil inlet of the release cylinder circuit solenoid valve Ⅲ, and the return oil port of the release cylinder circuit solenoid valve Ⅰ is connected to the oil tank; the oil inlet of the release cylinder circuit solenoid valve Ⅱ Connect the main oil circuit, the oil outlet of the release cylinder circuit solenoid valve II is connected to the oil inlet of the release cylinder circuit solenoid valve III; the return oil port of the release cylinder circuit solenoid valve III is connected to the return oil tank, one working oil port of the release cylinder circuit solenoid valve III is connected to the oil inlet end of the release cylinder and the release cylinder accumulator, the other working oil port of the release cylinder circuit solenoid valve III is connected to the release cylinder circuit hydraulic control one-way valve and the release cylinder circuit overflow valve II, the release cylinder circuit hydraulic control one-way valve is connected to the return oil end of the release cylinder, the release cylinder circuit overflow valve II is connected to the return oil tank and the release cylinder circuit overflow valve I and the release cylinder circuit stop valve, the release cylinder circuit stop valve is connected to the release cylinder pressure sensor, and the release cylinder circuit overflow valve I is connected to the return oil end of the release cylinder and the release cylinder circuit pressure gauge I.

[0010] More specifically, the release cylinder circuit solenoid valve I is provided with an electromagnet SQL5 for controlling the first working oil port and an electromagnet SQL6 for controlling the second working oil port, the release cylinder circuit solenoid valve II is provided with an electromagnet SQL9, and the release cylinder circuit solenoid valve III is provided with an electromagnet SQL14 and an electromagnet SQL15 for controlling the two working oil ports.

[0011] The technical effect of the present invention is as follows: the oil supply of each oil circuit is realized by multiple solenoid valves and pumps, the oil supply of each branch oil circuit takes precedence over the main oil circuit, and the flow of each branch oil circuit can realize multiple flow control. The locking cylinder is used to lock the fixed cone of the multi-cylinder cone crusher, the hydraulic motor is used to adjust the discharge port of the multi-cylinder cone crusher, and the release cylinder is used to lock the upper frame and clear the cavity. When the electromagnet SOL1, electromagnet SOL3, and electromagnet SOL5 are energized, each oil pump can supply oil to the locking cylinder circuit, hydraulic motor adjustment circuit, and release cylinder circuit respectively; when the electromagnet SOL2, electromagnet SOL4, and electromagnet SOL6 are energized, each oil pump can supply oil to the main oil circuit at the same time. The locking cylinder circuit can draw oil from the main oil circuit through the locking cylinder circuit solenoid valve II, the hydraulic motor adjustment circuit can draw oil from the main oil circuit through the hydraulic motor circuit solenoid valve II, and the release cylinder circuit can draw oil from the main oil circuit through the release cylinder circuit solenoid valve II. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a hydraulic principle diagram of the present invention.

[0013] Including: 1. Locking cylinder; 2. Locking cylinder accumulator; 3. Stop valve; 4. Locking cylinder pressure sensor; 5. Locking cylinder circuit overflow valve III; 6. Locking cylinder circuit pressure gauge I; 7. Shuttle valve; 8. Hydraulic motor; 9. Release cylinder accumulator; 10. Release cylinder; 11. Release cylinder pressure sensor; 12. Release cylinder circuit pressure gauge I; 13. Release cylinder circuit overflow valve I; 14. Release cylinder circuit stop valve; 15. Release cylinder circuit hydraulic control one-way valve; 16. Release cylinder circuit overflow valve II; 17. Release cylinder circuit solenoid valve III; 18. Release cylinder circuit solenoid valve II; 19. Release cylinder circuit solenoid valve I; 20. Hydraulic motor circuit solenoid valve I; 21. Release cylinder circuit overflow valve III; 22. Motor; 2 3. Release cylinder circuit metering pump; 24. Release cylinder circuit pressure gauge II; 25. Hydraulic motor circuit overflow valve; 26. Hydraulic motor circuit metering pump; 27. Hydraulic motor circuit pressure gauge; 28. Locking cylinder circuit overflow valve I; 29. ​​Locking cylinder circuit metering pump; 30. Filter; 31. Locking cylinder circuit pressure gauge II; 32. Locking cylinder circuit solenoid valve I; 33. Main oil circuit pressure gauge; 34. Main oil circuit pressure sensor; 35. Locking cylinder circuit solenoid valve II; 36. Locking cylinder circuit solenoid valve III; 37. Locking cylinder circuit overflow valve II; 38. Locking cylinder circuit hydraulic control one-way valve; 39. Hydraulic motor circuit solenoid valve III; 40. Hydraulic motor circuit solenoid valve II; 41. Hydraulic motor pressure sensor. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings:

[0015] like Figure 1As shown, the hydraulic system of the multi-cylinder cone crusher of the present invention includes a main oil circuit and three branch oil circuits: a locking cylinder circuit, a hydraulic motor circuit, and a release cylinder circuit. A main oil circuit pressure gauge 33 and a main oil circuit pressure sensor 34 are installed at the oil outlet of the main oil circuit, and a filter 30 is installed on the oil return port of the oil tank.

[0016] The locking cylinder circuit includes a locking cylinder circuit metering pump 29, a locking cylinder circuit solenoid valve I32, a locking cylinder circuit solenoid valve II35, a locking cylinder circuit solenoid valve III36, a locking cylinder circuit overflow valve I28, etc. The locking cylinder circuit solenoid valve I32 is provided with an electromagnet SQL1 for controlling the first working oil port and an electromagnet SQL2 for controlling the second working oil port. The locking cylinder circuit solenoid valve II35 is provided with an electromagnet SQL7. The locking cylinder circuit solenoid valve III36 is provided with an electromagnet SQL10 and an electromagnet SQL11 for controlling the two working oil ports. The oil outlet of the locking cylinder circuit metering pump 29 is connected to the locking cylinder circuit pressure gauge II31. The oil outlet of the locking cylinder circuit metering pump 29 is connected to the oil inlet of the locking cylinder circuit overflow valve I28 and the locking cylinder circuit solenoid valve I32. The first working oil port of the locking cylinder circuit solenoid valve I32 is connected to the main oil circuit, and the second working oil port of the locking cylinder circuit solenoid valve I32 is connected to the oil outlet of the locking cylinder circuit solenoid valve II35. The oil inlet of the locking cylinder circuit solenoid valve Ⅲ36 and the oil return port of the locking cylinder circuit solenoid valve Ⅰ32 are connected to the oil tank; the oil inlet of the locking cylinder circuit solenoid valve Ⅱ35 is connected to the main oil circuit, and the oil outlet of the locking cylinder circuit solenoid valve Ⅱ35 is connected to the oil inlet of the locking cylinder circuit solenoid valve Ⅲ36; the oil inlet of the locking cylinder circuit solenoid valve Ⅲ36 is connected to the oil outlet of the locking cylinder circuit solenoid valve Ⅱ35 and the second working oil port of the locking cylinder circuit solenoid valve Ⅰ32, and the locking cylinder circuit solenoid valve Ⅲ The return oil port of 36 is connected to the oil tank, the working oil port of the locking cylinder circuit solenoid valve III 36 is connected to the locking cylinder circuit hydraulic control one-way valve 38 and the locking cylinder circuit overflow valve II 37, the locking cylinder circuit hydraulic control one-way valve 38 is connected to the locking cylinder accumulator 2, the locking cylinder circuit overflow valve II 37 is connected to the oil tank, the stop valve 3, and the locking cylinder circuit overflow valve III 5, the stop valve 3 is connected to the locking cylinder circuit pressure sensor 4, and the locking cylinder circuit overflow valve III 5 is connected to the locking cylinder 1 and the locking cylinder circuit pressure gauge I 6.

[0017] The hydraulic motor circuit includes a hydraulic motor circuit metering pump 26, a hydraulic motor circuit solenoid valve I20, a hydraulic motor circuit solenoid valve II40, a hydraulic motor circuit solenoid valve III39, and a hydraulic motor circuit overflow valve 25. The hydraulic motor circuit solenoid valve I20 is provided with an electromagnet SQL3 for controlling the first working oil port and an electromagnet SQL4 for controlling the second working oil port. The hydraulic motor circuit solenoid valve II40 is provided with an electromagnet SQL8. The hydraulic motor circuit solenoid valve III39 is provided with an electromagnet SQL12 and an electromagnet SQL13 for controlling the two working oil ports. The oil outlet of the hydraulic motor circuit metering pump 26 is connected to the hydraulic motor circuit pressure gauge 27. The oil outlet of the hydraulic motor circuit metering pump 26 is connected to the hydraulic motor circuit overflow valve 25 and the oil inlet of the hydraulic motor circuit solenoid valve I20. The oil inlet of the hydraulic motor circuit solenoid valve I20 is connected to the hydraulic motor circuit metering pump 26, the oil outlet of the hydraulic motor circuit solenoid valve I20 is connected to the main oil circuit, the second working oil port of the hydraulic motor circuit solenoid valve I20 is connected to the oil outlet of the hydraulic motor circuit solenoid valve II40, the oil inlet of the hydraulic motor circuit solenoid valve III39 and the hydraulic motor pressure sensor 41, and the oil return port of the hydraulic motor circuit solenoid valve I20 is connected back to the oil tank; the oil inlet of the hydraulic motor circuit solenoid valve II40 is connected to the main oil circuit, and the oil outlet of the hydraulic motor circuit solenoid valve II40 is connected to the oil inlet of the hydraulic motor circuit solenoid valve III39; the oil inlet of the hydraulic motor circuit solenoid valve III39 is connected to the oil outlet of the hydraulic motor circuit solenoid valve II40 and the second working oil port of the hydraulic motor circuit solenoid valve I20, the working oil port of the hydraulic motor circuit solenoid valve III39 is connected to the hydraulic motor 8 and the shuttle valve 7, and the oil return port of the hydraulic motor circuit solenoid valve III39 is connected back to the oil tank.

[0018] The release cylinder circuit includes a release cylinder circuit quantitative pump 23, a release cylinder circuit solenoid valve I19, a release cylinder circuit solenoid valve II18, a release cylinder circuit solenoid valve III17, and a release cylinder circuit overflow valve III21; the release cylinder circuit solenoid valve I19 is provided with an electromagnet SQL5 for controlling the first working oil port and an electromagnet SQL6 for controlling the second working oil port, the release cylinder circuit solenoid valve II18 is provided with an electromagnet SQL9, and the release cylinder circuit solenoid valve III17 is provided with an electromagnet SQL14 and an electromagnet SQL15 for controlling the two working oil ports. The quantitative pump 23 of the release cylinder circuit is connected to the motor 22, the oil outlet of the quantitative pump 23 of the release cylinder circuit is connected to the pressure gauge Ⅱ24 of the release cylinder circuit, the oil outlet of the quantitative pump 23 of the release cylinder circuit is connected to the oil inlet of the relief valve Ⅲ21 of the release cylinder circuit and the solenoid valve Ⅰ19 of the release cylinder circuit; the oil inlet of the solenoid valve Ⅰ19 of the release cylinder circuit is connected to the oil outlet of the quantitative pump 23 of the release cylinder circuit, the first working oil port of the solenoid valve Ⅰ19 of the release cylinder circuit is connected to the main oil circuit, and the second working oil port of the solenoid valve Ⅰ19 of the release cylinder circuit is connected to the oil outlet of the solenoid valve Ⅱ18 of the release cylinder circuit and the release cylinder circuit. The oil inlet of the solenoid valve Ⅲ17 and the oil return port of the release cylinder circuit solenoid valve Ⅰ19 are connected back to the oil tank; the oil inlet of the release cylinder circuit solenoid valve Ⅱ18 is connected to the main oil circuit, and the oil outlet of the release cylinder circuit solenoid valve Ⅱ18 is connected to the oil inlet of the release cylinder circuit solenoid valve Ⅲ17; the oil inlet of the release cylinder circuit solenoid valve Ⅲ17 is connected to the oil outlet of the release cylinder circuit solenoid valve Ⅱ18 and the second working oil port of the release cylinder circuit solenoid valve Ⅰ19, the oil return port of the release cylinder circuit solenoid valve Ⅲ17 is connected back to the oil tank, and one working oil port of the release cylinder circuit solenoid valve Ⅲ17 is connected to the release cylinder 10 and the release cylinder accumulator 9, the other working oil port of the release cylinder circuit solenoid valve III17 is connected to the release cylinder circuit hydraulic control one-way valve 15 and the release cylinder circuit overflow valve II16, the release cylinder circuit hydraulic control one-way valve 15 is connected to the return oil end of the release cylinder 10, the release cylinder circuit overflow valve II16 is connected to the return oil tank and the release cylinder circuit overflow valve I13 and the release cylinder circuit stop valve 14, the release cylinder circuit stop valve 14 is connected to the release cylinder pressure sensor 11, and the release cylinder circuit overflow valve I13 is connected to the return oil end of the release cylinder 10 and the release cylinder circuit pressure gauge I12.

[0019] Referring to Table 1, when electromagnet SOL1 of locking cylinder circuit solenoid valve I32 is energized, the first working oil port of locking cylinder circuit solenoid valve I32 is blocked, while the second working oil port is connected. Locking cylinder circuit metering pump 29 can independently supply oil to the locking cylinder circuit at a flow rate of Q1. When electromagnet SOL3 of hydraulic motor circuit solenoid valve I20 is energized, the first working oil port of hydraulic motor circuit solenoid valve I20 is blocked, while the second working oil port is connected. Hydraulic motor circuit metering pump 26 can independently supply oil to the hydraulic motor circuit at a flow rate of Q2. When electromagnet SOL5 of release cylinder circuit solenoid valve I19 is energized, the first working oil port of release cylinder circuit solenoid valve I19 is blocked, while the second working oil port is connected. Release cylinder circuit metering pump 23 can independently supply oil to the release cylinder circuit at a flow rate of Q3. Specific control modes are shown in Table 1, which can control six flow rates for each circuit.

[0020] When the electromagnet SOL2 of the locking cylinder circuit solenoid valve Ⅰ32 is energized, the first working oil port of the locking cylinder circuit solenoid valve Ⅰ32 is connected, and the locking cylinder circuit metering pump 29 can supply oil to the main oil circuit. When the electromagnet SOL4 of the hydraulic motor circuit solenoid valve Ⅰ20 is energized, the first working oil port of the hydraulic motor circuit solenoid valve Ⅰ20 is connected, and the hydraulic motor circuit metering pump 26 can supply oil to the main oil circuit. When the electromagnet SOL6 of the release cylinder circuit solenoid valve Ⅰ19 is energized, the first working oil port of the release cylinder circuit solenoid valve Ⅰ19 is connected, and the release cylinder circuit metering pump 23 can supply oil to the main oil circuit.

[0021] When the locking cylinder circuit solenoid valve Ⅱ35 is energized, the locking cylinder circuit draws oil from the main oil circuit; when the hydraulic motor circuit solenoid valve Ⅱ40 is energized, the hydraulic motor circuit draws oil from the main oil circuit; when the release cylinder circuit solenoid valve Ⅱ18 is energized, the release cylinder circuit draws oil from the main oil circuit.

[0022] The locking cylinder circuit relief valve I 28 and locking cylinder circuit pressure gauge II 31 are connected to the oil outlet of the locking cylinder circuit metering pump 29 to adjust and read the outlet pressure of the locking cylinder circuit metering pump 29. The hydraulic motor circuit relief valve 25 and hydraulic motor circuit pressure gauge 27 are used to adjust and read the outlet pressure of the hydraulic motor circuit metering pump 26. The release cylinder circuit relief valve III 21 and release cylinder circuit pressure gauge II 24 are connected to the oil outlet of the release cylinder circuit metering pump 23 to adjust and read the outlet pressure of the release cylinder circuit metering pump 23. The locking cylinder circuit solenoid valve III 36 controls the operation of the locking cylinder circuit, the hydraulic motor circuit solenoid valve III 39 controls the operation of the hydraulic motor circuit, and the release cylinder circuit solenoid valve III 17 controls the operation of the release cylinder circuit. The main oil circuit pressure gauge 3 is used to read the system pressure of the main oil circuit. The locking cylinder circuit relief valve II 37 adjusts the maximum pressure of the locking cylinder, and the locking cylinder circuit relief valve III 5 sets the safety pressure of the locking cylinder. The release cylinder circuit overflow valve II 16 is used to adjust the maximum pressure of the release cylinder, and the release cylinder circuit overflow valve I 13 is used to set the safety pressure of the release cylinder. The locking cylinder accumulator 2 is used to maintain the pressure of the locking cylinder, and the release cylinder accumulator 9 is used to maintain the pressure of the release cylinder.

[0023] The control of 6 flow rates in each circuit can be achieved through the action control of each electromagnet. The electromagnet actions are as follows, and the corresponding flow rates of each circuit are shown in the following table, where Q1 represents the flow rate output by the locking cylinder circuit metering pump 29, Q2 represents the flow rate output by the hydraulic motor circuit metering pump 26, and Q3 represents the flow rate output by the release cylinder circuit metering pump 23.

[0024] Table 1

[0025]

[0026] Solenoid valve III36 in the locking cylinder circuit controls the action of locking cylinder 1, while electromagnet SOL11 locks the fixed cone and electromagnet SOL10 releases it. Solenoid valve III39 in the hydraulic motor circuit controls the action of hydraulic motor 8, while electromagnet SOL12 decreases the discharge opening and electromagnet SOL13 increases it. Solenoid valve III17 in the release cylinder circuit controls the action of release cylinder 10, while electromagnet SOL15 locks the upper frame and electromagnet SOL14 clears the cavity. Combined with the actions of SOL1-SOL9, various speeds can be controlled for each circuit, enabling rapid adjustment of the discharge opening, rapid cavity clearing, and rapid locking. At the same time, precise adjustment of the discharge opening and slow locking at low speeds can be achieved to minimize impact.

[0027] During operation, the locking cylinder pressure sensor 4 checks the pressure in the locking cylinder 1. The program automatically controls the charging of the locking cylinder accumulator 2 to ensure the locking of the multi-cylinder cone. The release cylinder pressure sensor 11 checks the pressure in the release cylinder 10. The program automatically controls the charging of the release cylinder accumulator 9 to ensure the locking of the multi-cylinder cone upper frame. The hydraulic motor pressure sensor 41 detects the operating pressure of the hydraulic motor. When the operating pressure exceeds a certain value, the discharge opening is determined to be zero. The discharge opening can be automatically calibrated by monitoring the value of the hydraulic motor pressure sensor 41.

[0028] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the present invention. A person skilled in the art will understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A multi-cylinder cone crusher hydraulic system, characterized by: It includes three branch oil circuits: the main oil circuit and the locking cylinder circuit, the hydraulic motor circuit, and the release cylinder circuit. The locking cylinder circuit is provided with a locking cylinder circuit metering pump, which connects the locking cylinder and the main oil circuit. The hydraulic motor circuit is provided with a hydraulic motor circuit metering pump, which connects the hydraulic motor and the main oil circuit. The release cylinder circuit is provided with a release cylinder circuit metering pump, which connects the release cylinder and the main oil circuit. The metering pumps of the locking cylinder circuit, the hydraulic motor circuit, and the release cylinder circuit are switched by solenoid valves, and can be selected to supply oil to the branch circuit independently or to supply oil to the main oil circuit in coordination.

2. The multi-cylinder cone crusher hydraulic system according to claim 1, characterized in that: The locking cylinder circuit also includes a locking cylinder circuit solenoid valve I, a locking cylinder circuit solenoid valve II, and a locking cylinder circuit solenoid valve III. The oil outlet of the locking cylinder circuit quantitative pump is connected to the locking cylinder circuit pressure gauge II, the oil outlet of the locking cylinder circuit quantitative pump is connected to the locking cylinder circuit overflow valve I and the oil inlet of the locking cylinder circuit solenoid valve I, the first working oil port of the locking cylinder circuit solenoid valve I is connected to the main oil circuit, the second working oil port of the locking cylinder circuit solenoid valve I is connected to the oil outlet of the locking cylinder circuit solenoid valve II and the oil inlet of the locking cylinder circuit solenoid valve III, and the oil return port of the locking cylinder circuit solenoid valve I is connected to the oil tank; The oil inlet of the locking cylinder circuit solenoid valve II is connected to the main oil circuit, and the oil outlet of the locking cylinder circuit solenoid valve II is connected to the oil inlet of the locking cylinder circuit solenoid valve III; the oil return port of the locking cylinder circuit solenoid valve III is connected to the oil tank, the working oil port of the locking cylinder circuit solenoid valve III is connected to the locking cylinder circuit hydraulic control one-way valve and the locking cylinder circuit relief valve II, the locking cylinder circuit hydraulic control one-way valve is connected to the locking cylinder accumulator, the locking cylinder circuit relief valve II is connected to the oil tank, the stop valve, and the locking cylinder circuit relief valve III, the stop valve is connected to the locking cylinder circuit pressure sensor, and the locking cylinder circuit relief valve III is connected to the locking cylinder and the locking cylinder circuit pressure gauge I.

3. The multi-cylinder cone crusher hydraulic system according to claim 2, characterized in that: The locking cylinder circuit solenoid valve I is provided with an electromagnet SQL1 for controlling the first working oil port and an electromagnet SQL2 for controlling the second working oil port. The locking cylinder circuit solenoid valve II is provided with an electromagnet SQL7. The locking cylinder circuit solenoid valve III is provided with an electromagnet SQL10 and an electromagnet SQL11 for controlling the two working oil ports.

4. The multi-cylinder cone crusher hydraulic system according to claim 1, characterized in that: The hydraulic motor circuit includes a hydraulic motor circuit solenoid valve I, a hydraulic motor circuit solenoid valve II, a hydraulic motor circuit solenoid valve III, and a hydraulic motor circuit overflow valve. The oil outlet of the hydraulic motor circuit metering pump is connected to the hydraulic motor circuit pressure gauge, and the oil outlet of the hydraulic motor circuit metering pump is connected to the hydraulic motor circuit overflow valve and the oil inlet of the hydraulic motor circuit solenoid valve I; the first working oil port of the hydraulic motor circuit solenoid valve I is connected to the main oil circuit, the second working oil port of the hydraulic motor circuit solenoid valve I is connected to the oil outlet of the hydraulic motor circuit solenoid valve II, the oil inlet of the hydraulic motor circuit solenoid valve III and the hydraulic motor pressure sensor, and the return oil port of the hydraulic motor circuit solenoid valve I is connected to the return oil tank; the oil inlet of the hydraulic motor circuit solenoid valve II is connected to the main oil circuit, and the oil outlet of the hydraulic motor circuit solenoid valve II is connected to the oil inlet of the hydraulic motor circuit solenoid valve III; the working oil port of the hydraulic motor circuit solenoid valve III is connected to the hydraulic motor and the shuttle valve, and the return oil port of the hydraulic motor circuit solenoid valve III is connected to the return oil tank.

5. The multi-cylinder cone crusher hydraulic system according to claim 4, characterized in that: the hydraulic motor The circuit solenoid valve I is provided with an electromagnet SQL3 for controlling the first working oil port and an electromagnet SQL4 for controlling the second working oil port. The hydraulic motor circuit solenoid valve II is provided with an electromagnet SQL8. The hydraulic motor circuit solenoid valve III is provided with an electromagnet SQL12 and an electromagnet SQL13 for controlling the two working oil ports.

6. The multi-cylinder cone crusher hydraulic system according to claim 1, characterized in that: The release cylinder circuit includes a release cylinder circuit solenoid valve I, a release cylinder circuit solenoid valve II, a release cylinder circuit solenoid valve III, and a release cylinder circuit overflow valve III; the release cylinder circuit quantitative pump is connected to the motor, the oil outlet of the release cylinder circuit quantitative pump is connected to the release cylinder circuit pressure gauge II, the oil outlet of the release cylinder circuit quantitative pump is connected to the release cylinder circuit overflow valve III and the oil inlet of the release cylinder circuit solenoid valve I; the first working oil port of the release cylinder circuit solenoid valve I is connected to the main oil circuit, the second working oil port of the release cylinder circuit solenoid valve I is connected to the oil outlet of the release cylinder circuit solenoid valve II and the oil inlet of the release cylinder circuit solenoid valve III, the return oil port of the release cylinder circuit solenoid valve I is connected to the oil tank; the oil inlet of the release cylinder circuit solenoid valve II is connected In the main oil circuit, the oil outlet of the release cylinder circuit solenoid valve II is connected to the oil inlet of the release cylinder circuit solenoid valve III; the return oil port of the release cylinder circuit solenoid valve III is connected to the return oil tank, one working oil port of the release cylinder circuit solenoid valve III is connected to the oil inlet end of the release cylinder and the release cylinder accumulator, the other working oil port of the release cylinder circuit solenoid valve III is connected to the release cylinder circuit hydraulic control one-way valve and the release cylinder circuit overflow valve II, the release cylinder circuit hydraulic control one-way valve is connected to the return oil end of the release cylinder, the release cylinder circuit overflow valve II is connected to the return oil tank and the release cylinder circuit overflow valve I and the release cylinder circuit stop valve, the release cylinder circuit stop valve is connected to the release cylinder pressure sensor, and the release cylinder circuit overflow valve I is connected to the return oil end of the release cylinder and the release cylinder circuit pressure gauge I.

7. The multi-cylinder cone crusher hydraulic system according to claim 6, characterized in that: The release cylinder circuit solenoid valve I is provided with an electromagnet SQL5 for controlling the first working oil port and an electromagnet SQL6 for controlling the second working oil port, the release cylinder circuit solenoid valve II is provided with an electromagnet SQL9, and the release cylinder circuit solenoid valve III is provided with an electromagnet SQL14 and an electromagnet SQL15 for controlling the two working oil ports.

8. A method for controlling a hydraulic system of a multi-cylinder cone crusher according to claim 7, characterized in that: The locking cylinder circuit solenoid valve I is provided with an electromagnet SQL1 for controlling the first working oil port and an electromagnet SQL2 for controlling the second working oil port, the locking cylinder circuit solenoid valve II is provided with an electromagnet SQL7, and the locking cylinder circuit solenoid valve III is provided with an electromagnet SQL10 and an electromagnet SQL11 for controlling the two working oil ports; the hydraulic motor circuit solenoid valve I is provided with an electromagnet SQL3 for controlling the first working oil port and an electromagnet SQL4 for controlling the second working oil port, the hydraulic motor circuit solenoid valve II is provided with an electromagnet SQL8, and the hydraulic motor circuit solenoid valve III is provided with an electromagnet SQL12 and an electromagnet SQL13 for controlling the two working oil ports; locking is achieved through the action control of the electromagnets of each solenoid valve The cylinder circuit, hydraulic motor circuit, and release cylinder circuit each control six flow rates, of which Q1 represents the flow rate output by the locking cylinder circuit's metering pump, Q2 represents the flow rate output by the hydraulic motor circuit's metering pump, and Q3 represents the flow rate output by the release cylinder circuit's metering pump. The electromagnet's action control method is shown in Table 1. The solenoid valve combination mode is selected according to the crusher's operating conditions, and the flow rate of each circuit is controlled by the solenoid valve on-off logic shown in Table 1. When the maximum main oil circuit flow rate is required, the SOL2+SOL4+SOL6 energization combination is used to coordinate the flow rates of the three pumps Q1+Q2+Q3 to supply the main oil circuit. When the release cylinder needs to act quickly, the SOL5+SOL9 energization combination is used to enable Q3 to supply oil to the release cylinder circuit alone. Table 1 。

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