High-pressure quick-change solenoid valve device with low-pressure signal

Abstract

The invention discloses a high-pressure quick-change solenoid valve device with a low-pressure signal, which comprises a main valve, the main valve is connected with a high-pressure pump, the main valve is connected with a through cut-off valve, the through cut-off valve is respectively connected with an oil tank and a three-position six-way valve, the three-position six-way valve is connected with a low-pressure pump, the three-position six-way valve is connected with a high-pressure quick-change connector, and the three-position six-way valve comprises a shell. A reversing valve element is arranged on the inner side of the shell, one end of the reversing valve element is connected with a pressure reducing valve, the two ends of the reversing valve element are both connected with reversing electromagnetic coils, the reversing electromagnetic coils are connected with reset springs, one end of the reversing valve element is connected with a one-way valve, and the one-way valve and the reversing valve element are both connected with a high-pressure quick-change connector. The three-position six-way valve is controlled to perform switching action, the operation process and action are simplified, the process originally needing auxiliary operation is simplified into the process only needing to operate the quick-change switch, and the functions of reducing the operation difficulty and improving the operation efficiency are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of excavator accessories, and in particular to a high-pressure quick-change solenoid valve device with a low-pressure signal. Background Art

[0002] When operating high-pressure quick-change connectors on some engineering machinery, additional operations are required to achieve quick-change operations, or additional low-pressure control valves are required to realize the movement of the quick-change connectors. However, the additional operations will increase the difficulty of operating the high-pressure quick-change connectors, making the operation cumbersome, which will increase the difficulty of operation and affect the efficiency of the operation.

[0003] Therefore, designing a device that reduces the difficulty of operation and improves operating efficiency is exactly the problem that the inventor wants to solve. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a high-pressure quick-change solenoid valve device with a low-pressure signal, which can reduce the difficulty of operation and improve the operating efficiency.

[0005] The technical solution adopted by the device of the present invention is: a high-pressure quick-change solenoid valve device with a low-pressure signal, comprising a main valve, the main valve is connected to a high-pressure pump, the main valve is connected to a center-through cut-off valve, the center-through cut-off valve is respectively connected to an oil tank and a three-position six-way valve, the three-position six-way valve is connected to a low-pressure pump, and the three-position six-way valve is connected to a high-pressure quick-change connector; The three-position six-way valve includes a shell, a reversing valve core is arranged on the inner side of the shell, one end of the reversing valve core is connected to a pressure reducing valve, both ends of the reversing valve core are connected to a reversing solenoid coil, the reversing solenoid coil is connected to a reset spring, one end of the reversing valve core is connected to a check valve, and the check valve and the reversing valve core are both connected to a high-pressure quick-change connector.

[0006] Furthermore, it also includes a quick-change switch, which is electrically connected to the three-position six-way valve.

[0007] Furthermore, the P2 port of the main valve is connected to the high-pressure pump, and the P3 port is connected to the P port of the three-position six-way valve.

[0008] Furthermore, the E port of the center disconnector is connected to the oil tank.

[0009] Furthermore, the C port of the three-position six-way valve is connected to the center-through cut-off valve, the B port of the three-position six-way valve is connected to the R port of the high-pressure quick-change connector, and the A port of the three-position six-way valve is connected to the H port of the high-pressure quick-change connector.

[0010] Furthermore, the one-way valve is connected to the H port of the high-pressure quick-change connector via the A port of the three-position six-way valve.

[0011] The beneficial effects of the device of the present invention are: 1. The present invention controls the three-position six-way valve to perform switching actions by operating the quick-change switch, thereby simplifying the operation process and actions, and simplifying the process that originally required auxiliary operations to only requiring the operation of the quick-change switch, thereby achieving the function of reducing the difficulty of operation and improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural view of the hydraulic system of the present invention.

[0013] Figure 2 It is a structural view of the release quick-change function state of the hydraulic system of the present invention.

[0014] Explanation of the reference numerals: 1-pressure reducing valve; 2-reversing valve core; 3-reversing solenoid coil; 4-reset spring; 5-check valve; 6-housing; 7-high-pressure quick-change connector; 8-center-through cut-off valve; 9-main valve; 10-piston rod; 11-high-pressure pump; 12-low-pressure pump; 13-oil tank. DETAILED DESCRIPTION

[0015] The following is a further description of the device of the present invention in conjunction with specific embodiments, which are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the device of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the claims attached to the application.

[0016] Example 1: See Figures 1 to 2 It is a structural view of the hydraulic system of the present invention, a structural view of the hydraulic system releasing quick-change function state, a high-pressure quick-change solenoid valve device with a low-pressure signal, including a main valve 9, the main valve 9 is connected to a high-pressure pump 11, the main valve 9 is connected to a middle-through cut-off valve 8, the middle-through cut-off valve 8 is respectively connected to an oil tank 13 and a three-position six-way valve, the three-position six-way valve is connected to a low-pressure pump 12, and the three-position six-way valve is connected to a high-pressure quick-change connector 7; The three-position six-way valve includes a shell 6, a reversing valve core 2 is arranged on the inner side of the shell 6, one end of the reversing valve core 2 is connected to a pressure reducing valve 1, both ends of the reversing valve core 2 are connected to a reversing solenoid coil 3, the reversing solenoid coil 3 is connected to a reset spring 4, one end of the reversing valve core 2 is connected to a check valve 5, and the check valve 5 and the reversing valve core 2 are both connected to a high-pressure quick-change connector 7.

[0017] The P2 port of the main valve 9 is connected to the high-pressure pump 11, the P3 port is connected to the P port of the three-position six-way valve, the E port of the center-through cut-off device is connected to the oil tank 13, the C port of the three-position six-way valve is connected to the center-through cut-off valve 8, the B port of the three-position six-way valve is connected to the R port of the high-pressure quick-change connector 7, the A port of the three-position six-way valve is connected to the H port of the high-pressure quick-change connector 7, and the one-way valve 5 is connected to the H port of the high-pressure quick-change connector 7 through the A port of the three-position six-way valve.

[0018] It also includes a quick-change switch, which is electrically connected to the three-position six-way valve.

[0019] When the customer operates the quick-change switch to perform the quick-change release function, a point signal is transmitted to the electromagnetic coil. After receiving the electrical signal, the electromagnetic coil generates an electromagnetic, and the reversing valve core 2 has a leftward force to move the valve core. After the reversing valve core 2 moves to the left, the pilot pump outputs low-pressure control oil through the pi port of the three-position six-way valve and the C port to the middle-through cut-off valve 8, so that the middle-through cut-off valve 8 moves left, and the E port of the middle-through cut-off valve 8 will be closed. At this time, the high-pressure oil of the high-pressure pump 11 flows through the P2 port and then through the P3 port to the P port of the three-position six-way valve, and distributes the oil to the oil inlet R port of the high-pressure quick-change connector 7 through the B port of the three-position six-way valve after the reversal. At this time, the quick-change cylinder is filled with high-pressure oil, and the piston rod 10 moves to the right to realize the quick-change cylinder release action.

[0020] When the customer operates the quick-change switch to perform the quick-change clamping function, a point signal is transmitted to the electromagnetic coil. After receiving the electrical signal, the electromagnetic coil generates an electromagnetic, and the reversing valve core 2 has a rightward force to move the valve core. After the reversing valve core 2 moves to the right, the pilot pump outputs low-pressure control oil through the pi port of the three-position six-way valve and the C port to the middle-through cut-off valve 8, so that the middle-through cut-off valve 8 moves left, and the E port of the middle-through cut-off valve 8 will be closed. At this time, the high-pressure oil of the high-pressure pump 11 flows through the P2 port and then through the P3 port to the P port of the three-position six-way valve, and distributes the oil to the oil inlet port H of the high-pressure quick-change connector 7 through the B port of the three-position six-way valve after the reversal. At this time, the quick-change cylinder is filled with high-pressure oil, and the piston rod 10 moves to the left, realizing the clamping action of the quick-change cylinder.

[0021] The present invention simplifies the operation process and actions by operating the quick-change switch to control the action of the three-position six-way valve to perform the switching action, and simplifies the process that originally required auxiliary operation to only requiring the operation of the quick-change switch, thereby achieving the function of reducing the operation difficulty and improving the operation efficiency.

Claims

1. A high-pressure quick-change solenoid valve device with a low-pressure signal, comprising a main valve, wherein the main valve is connected to a high-pressure pump, and characterized in that: The main valve is connected to a center-through cut-off valve, which is respectively connected to an oil tank and a three-position six-way valve, which is connected to a low-pressure pump, and which is connected to a high-pressure quick-change connector; The three-position six-way valve includes a shell, a reversing valve core is arranged on the inner side of the shell, one end of the reversing valve core is connected to a pressure reducing valve, both ends of the reversing valve core are connected to a reversing solenoid coil, the reversing solenoid coil is connected to a reset spring, one end of the reversing valve core is connected to a check valve, and the check valve and the reversing valve core are both connected to a high-pressure quick-change connector.

2. A high-pressure quick-change solenoid valve device with a low-pressure signal according to claim 1, characterized in that: It also includes a quick-change switch, which is electrically connected to the three-position six-way valve.

3. A high-pressure quick-change solenoid valve device with a low-pressure signal according to claim 1, characterized in that: The P2 port of the main valve is connected to the high-pressure pump, and the P3 port is connected to the P port of the three-position six-way valve.

4. A high-pressure quick-change solenoid valve device with a low-pressure signal according to claim 1, characterized in that: The E port of the center cut-off device is connected to the oil tank.

5. A high-pressure quick-change solenoid valve device with a low-pressure signal according to claim 1, characterized in that: The C port of the three-position six-way valve is connected to the center-through cut-off valve, the B port of the three-position six-way valve is connected to the R port of the high-pressure quick-change connector, and the A port of the three-position six-way valve is connected to the H port of the high-pressure quick-change connector.

6. A high-pressure quick-change solenoid valve device with a low-pressure signal according to claim 5, characterized in that: The one-way valve is connected to the H port of the high-pressure quick-change connector through the A port of the three-position six-way valve.

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