Fold line type efficient multi-cutter shearing machine rapid liquid filling hydraulic system and control method

Abstract

The invention provides a broken line type efficient multi-cutter shearing machine rapid liquid filling hydraulic system and a control method, the broken line type efficient multi-cutter shearing machine rapid liquid filling hydraulic system comprises an oil pump motor set component system used for providing hydraulic energy, and the oil pump motor set component system is connected with a shearing oil cylinder used for executing shearing action and a control valve component system of the shearing oil cylinder; the oil pump motor set component system is connected with a material pressing oil cylinder used for executing the material pressing action and a control valve component system of the material pressing oil cylinder. The shearing oil cylinder and the control valve component system thereof and the pressing oil cylinder and the control valve component system thereof are simultaneously connected with the liquid filling component system; the liquid filling component system is connected with the air source component system; and the circulating cooling component system is connected with the main oil tank through an oil return pipe. The invention provides an auxiliary return stroke control system while overcoming the negative pressure liquid filling defect of a traditional liquid filling system. And the effective working efficiency of the gantry type scrap steel shearing machine is effectively improved. Therefore, the equipment capacity is improved, and the environment-friendly effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The invention relates to the field of scrap metal shearing equipment, in particular to a quick-liquid-filling hydraulic system and a control method for a folding-line high-efficiency multi-blade shearing machine. Background Art

[0002] The conventional traditional cartridge valve control hydraulic system requires more oil pump motor units to speed up, and the speed-up effect is not obvious; during the operation of the gantry scrap steel shearing machine, more than 60% of the stroke belongs to the fast-forward operation stage, and the rapid filling system is also the best choice. The traditional filling control system uses a fast cylinder single cylinder return, and the return pressure is small. It cannot return in the stuck state, and manpower is required to dismantle the equipment for troubleshooting. It not only invests a lot of manpower, material and financial resources, but also increases the probability of equipment maintenance, reducing the effective working efficiency of the gantry scrap steel shearing machine. Summary of the invention

[0003] The purpose of the present invention is to provide a quick filling hydraulic system and control method for a folding line type high-efficiency multi-blade shearing machine in view of the above problems. The present invention overcomes the negative pressure filling defects of the traditional filling system and provides an auxiliary return control system. The effective working efficiency of the gantry type scrap steel shearing machine is effectively improved. Thereby, the equipment production capacity is improved and the environmental protection effect of energy saving and emission reduction is achieved.

[0004] In order to realize the above-mentioned technical features, the object of the present invention is realized as follows: the fast filling hydraulic system of the zigzag high-efficiency multi-blade shearing machine includes an oil pump motor component system for providing hydraulic energy, the oil pump motor component system is connected to the shearing cylinder and its control valve component system for performing the shearing action, and the oil pump motor component system is also connected to the pressing cylinder and its control valve component system for performing the pressing action; the shearing cylinder and its control valve component system and the pressing cylinder and its control valve component system are simultaneously connected to the filling component system, and the filling component system is connected to the air source component system; it also includes a circulating cooling component system, and the circulating cooling component system is connected to the main oil tank through an oil return pipe.

[0005] Preferably, the oil pump motor component system includes a main oil tank, on which a liquid level controller and an oil temperature controller are installed; multiple groups of first oil pump motor groups are connected to the main oil tank; the second oil pump motor group is connected to the main oil tank; the outlets of the first oil pump motor group and the second oil pump motor group are connected to a pump port control valve group, the first oil outlet of the pump port control valve group is connected to the shear cylinder control valve group, and the second oil outlet of the pump port control valve group is connected to the press cylinder control valve group; the shear cylinder control valve group and the press cylinder control valve group are connected via a merging valve group.

[0006] Preferably, the oil pump motor unit component system further includes an external control valve unit connected to the outlet of the second oil pump motor unit, and also includes an accumulator and a valve assembly installed on the oil return pipe.

[0007] Preferably, the shear cylinder and its control valve component system are composed of three shear cylinders of the same specifications, a shear cylinder rodless chamber filling valve, a first filling valve control valve group, a first pressure sensor, a shear cylinder control valve group, a shear cylinder rod chamber return control valve group, a shear cylinder rod chamber filling valve and a shear cylinder stroke control laser sensor; the shear cylinder control valve group is connected to the first oil outlet after the oil pump motor group component system converges, the shear cylinder control valve group includes a first working oil port, a second working oil port and a third working oil port, and the first working oil port is connected to the shear cylinder The rodless chamber of the quick cylinder in the middle position, the second working oil port is connected to the rodless chamber of the auxiliary cylinder at the left and right positions of the shear cylinder, and at the same time, the rodless chamber of the auxiliary cylinder at the left and right positions of the shear cylinder is connected to the rodless chamber filling valve of the shear cylinder; the first oil port of the shear cylinder rod chamber return control valve group is connected to the first oil outlet, the third oil port of the shear cylinder rod chamber return control valve group is connected to the rod chamber of the auxiliary cylinder at the left and right positions of the shear cylinder, and at the same time, the rod chamber of the auxiliary cylinder at the left and right positions of the shear cylinder is connected to the rod chamber filling valve of the shear cylinder, and the first pressure sensor is installed at the first oil outlet of the shear cylinder control valve group.

[0008] Preferably, the pressurizing cylinder and its control valve component system are composed of three pressurizing cylinders of the same specifications, a rodless cavity filling valve of the pressurizing cylinder, a second filling valve control valve group, a second pressure sensor, a pressurizing cylinder control valve group, a rod cavity return control valve group of the pressurizing cylinder, a rod cavity filling valve of the pressurizing cylinder and a pressurizing cylinder stroke control laser sensor; the pressurizing cylinder control valve group is connected to the second oil outlet after the oil pump motor group converges, the pressurizing cylinder control valve group has a fourth working oil port, a fifth working oil port and a sixth working oil port, the fourth working oil port is connected to the middle position of the pressurizing cylinder The quick cylinder rodless chamber is arranged, the fifth working oil port is connected with the rodless chamber of the auxiliary cylinder at the left and right positions of the press cylinder, and at the same time, the rodless chamber of the auxiliary cylinder at the left and right positions of the press cylinder is connected with the rodless chamber filling valve of the press cylinder; the second oil port of the rod chamber return control valve group of the press cylinder is connected with the second oil outlet, the fourth oil port of the rod chamber return control valve group of the press cylinder is connected with the rod chamber of the auxiliary cylinder at the left and right positions of the press cylinder, and at the same time, the rod chamber of the auxiliary cylinder at the left and right positions of the press cylinder is connected with the rod chamber filling valve of the press cylinder, and the second pressure sensor is installed with the second oil outlet of the press cylinder control valve group.

[0009] Preferably, the liquid-filled component system consists of a pressurized liquid-filled oil tank, a liquid level controller, an oil temperature controller, a pressure sensor, a safety valve and various connecting oil ports connected thereto; the liquid level controller, the oil temperature controller, the pressure sensor and the safety valve are all installed on the top of the pressurized liquid-filled oil tank.

[0010] Preferably, the air source component system is composed of an air compressor, a pneumatic triplet and a two-way valve group; the first air outlet of the two-way valve group is connected to the top of the pressurized liquid-filled oil tank.

[0011] Preferably, the circulating cooling component system consists of an oil guide pump, a heat exchanger, a filter, a cooling tower and a connecting valve; the oil guide pump suction pipe is connected to the connecting port of the pressurized liquid-filled oil tank through the connecting valve, and the oil outlet of the oil guide pump passes through the heat exchanger and the filter to be connected to the main oil tank.

[0012] Preferably, the shear cylinder stroke control laser sensor and the press cylinder stroke control laser sensor are used for auxiliary control of the scrap steel shearing machine's fast-filling hydraulic system; The fast cylinder and the auxiliary cylinder of the shearing cylinder and the pressing cylinder have the same specifications and models, so as to reduce the differences in sealing and structure of the same type of cylinders.

[0013] Preferably, the control method of the fast filling hydraulic system of the folding line high-efficiency multi-blade shearing machine is: During the operation of the system, the corresponding solenoid valve of the pressure cylinder control valve group is energized, so that the first cartridge valve and the third cartridge valve are opened, forming a differential connection of the pressure cylinder fast cylinder, and at the same time, the solenoid valve of the second filling valve control valve group is energized, the rodless chamber filling valve of the pressure cylinder is opened, and the pressure cylinder fast cylinder moves downward rapidly with the differential movement, driving the pressure auxiliary cylinder to move downward, and the rodless chamber filling valve of the pressure cylinder fills the rodless chamber of the pressure auxiliary cylinder; when the pressure cylinder extends to the set position value of the pressure cylinder stroke control laser sensor or the second pressure sensor reaches the set pressure value, the corresponding solenoid valve loses power; the rodless chamber filling valve and the differential connection of the pressure cylinder are closed, and at the same time, the corresponding solenoid valve is energized, so that the second cartridge valve and the sixth cartridge valve are opened, the solenoid valve of the rod chamber return control valve group of the pressure cylinder is energized, the rod chamber filling valve of the pressure cylinder is opened, and the pressure cylinder moves forward to press the material; During the operation of the system, the corresponding solenoid valve of the shear cylinder control valve group is energized, the eleventh cartridge valve and the thirteenth cartridge valve are opened, forming a differential connection of the shear cylinder fast cylinder, and at the same time, the solenoid valve of the first filling valve control valve group is energized, the shear cylinder rodless chamber filling valve is opened, and the shear cylinder fast cylinder moves downward rapidly with the differential movement, driving the shear auxiliary cylinder to move downward, and the shear cylinder rodless chamber filling valve fills the shear auxiliary cylinder rodless chamber; when the shear cylinder extends to the position value set by the shear cylinder stroke control laser sensor or the first pressure sensor reaches the set pressure value, the corresponding solenoid valve loses power; the shear cylinder rodless chamber filling valve and the differential connection are closed, and at the same time, the corresponding solenoid valve of the shear cylinder control valve group is energized, the twelfth cartridge valve and the sixteenth cartridge valve are opened, the solenoid valve of the shear cylinder rod chamber return control valve group is energized, the shear cylinder rod chamber filling valve is opened, and the shear cylinder moves forward to shear the material; The opening and closing of the merging valve group can realize the connection between the first oil outlet and the second oil outlet, and realize the merging and splitting of flow, pressure and power; By setting up a high-position pressurized liquid filling oil tank, the pressurized liquid filling oil tank is filled with pure high-pressure air through the first air outlet through the air compressor, the pneumatic triplex and the two-way valve group, so that the pressurized liquid filling oil tank is always filled with the set pressure value, forming positive pressure filling; The solenoid valve and charging valve of the cartridge valve are controlled by a separate external control valve group and accumulator to improve the action efficiency of the cartridge valve and the charging valve; During the operation of the system, the corresponding solenoid valve of the shear cylinder control valve group is energized, so that the fourteenth cartridge valve and the fifteenth cartridge valve are opened, and the corresponding solenoid valve of the pressure cylinder control valve group is energized, so that the fourth cartridge valve and the fifth cartridge valve are opened, thereby realizing the pre-pressure relief of the high pressure when the shear cylinder and the pressure cylinder rodless chamber are working, and reducing the pressure shock when the filling valve is opened to return oil; During the operation of the system, the corresponding solenoid valve of the pressure cylinder control valve group is energized, so that the third cartridge valve, the fourth cartridge valve, and the fifth cartridge valve are opened. At the same time, the solenoid valve of the second filling valve control valve group is energized, and the solenoid valve of the rod chamber return control valve group of the pressure cylinder is energized, the rod chamber filling valve of the pressure cylinder is opened, and the rod chamber of the pressure cylinder fast cylinder is filled with oil, and the rodless chamber is discharged; the rod chamber of the pressure cylinder auxiliary cylinder absorbs oil through the rod chamber filling valve of the pressure cylinder, and the rodless chamber is discharged through the rodless chamber filling valve of the pressure cylinder, completing the rapid return of the pressure cylinder; During the operation of the system, the corresponding solenoid valve of the shear cylinder control valve group is energized, so that the thirteenth cartridge valve, the fourteenth cartridge valve, and the fifteenth cartridge valve are opened, and at the same time, the solenoid valve of the first filling valve control valve group is energized, and the solenoid valve of the shear cylinder rod chamber return control valve group is energized, the shear cylinder rod chamber filling valve is opened, the shear cylinder fast cylinder rod chamber is filled with oil, and the rodless chamber is discharged; the shear cylinder auxiliary cylinder rod chamber sucks oil through the shear cylinder rod chamber filling valve, and the rodless chamber is discharged through the shear cylinder rodless chamber filling valve, completing the shear cylinder's rapid return; During the return stroke of the pressing cylinder and the shearing cylinder, when the second pressure sensor and the first pressure sensor reach the upper limit of the pressure value set by the system, it is judged through the logical relationship that the return stroke of the pressing cylinder or the shearing cylinder is blocked, that is, the pressing head driven by the pressing cylinder is stuck or the scissors slide driven by the shearing cylinder is stuck. At this time, the rod chamber filling valve of the shearing cylinder and the rod chamber filling valve of the pressing cylinder are closed, and the eighth cartridge valve and the eighteenth cartridge valve are opened to complete the auxiliary return stroke of the auxiliary cylinder.

[0014] The present invention has the following beneficial effects: 1. The present invention overcomes the negative pressure filling defects of the traditional filling system and provides an auxiliary return control system, which effectively improves the effective working efficiency of the gantry type scrap steel shearing machine.

[0015] 2. The fast cylinder and auxiliary cylinder of the shearing cylinder and the pressing cylinder of the present invention have the same specifications and models, thereby reducing the differences in seals and structures of similar cylinders.

[0016] 3. In the present invention, the oil ports after the confluence of multiple oil pump motor groups are respectively connected to the shear cylinder control valve group and the press cylinder control valve group, and the shear cylinder control valve group and the press cylinder control valve group are connected by the converging valve group; the shear and press cylinders are a pressurized fast filling system in the form of three groups of cylinders, and the pressurized fast filling system is assisted by the air source system; the auxiliary return control valve groups are respectively connected to the rod chambers of the fast filling cylinders; the external control valve groups are respectively connected to the X ports of each control valve group, for providing a fast response of the control valve group.

[0017] 4. The present invention can achieve the connection between the first oil outlet and the second oil outlet by opening and closing the merging valve group, thereby realizing the merging and splitting of flow, pressure and power.

[0018] 5. In addition to the main oil tank that supplies the oil source to the oil pump motor unit, the present invention also sets up a high-position pressurized liquid filling tank; the pressurized liquid filling tank is filled with pure high-pressure air through the K1 port via the air compressor, the pneumatic triplet and the two-way valve group, so that the pressurized liquid filling tank is always filled with the set pressure value, forming positive pressure filling, overcoming the defect of negative pressure filling of the traditional filling system and improving the filling efficiency.

[0019] 6. The present invention provides a separate external control valve group and accumulator, through which the solenoid valve and the charging valve of the cartridge valve are controlled, thereby improving the operating efficiency of the cartridge valve and the charging valve, and effectively improving the working efficiency of the entire system.

[0020] 7. The system of the present invention can realize the pre-pressure relief of high pressure when the shearing cylinder and the pressing cylinder are working in the rodless chamber, and reduce the pressure shock when the filling valve is opened to return oil.

[0021] 8. The present invention overcomes the dry friction defect of the auxiliary oil cylinder of the traditional liquid filling system with a rod cavity without oil inflow, ensures the lubricated operation of the auxiliary oil cylinder of the pressing oil cylinder, reduces the risk of damage to the pressing oil cylinder; increases the service life of the seal after lubrication, and improves the reliability of the equipment.

[0022] 9. The present invention effectively solves the problem that the return force of a single oil cylinder in a traditional liquid filling system is small and cannot be returned in a stuck state, thereby avoiding the ineffective labor of disassembling equipment to troubleshoot.

[0023] 10. The auxiliary return process of the present invention uses the self-logical relationship judgment after the sensor reads the value, and is self-executed during the operation of the equipment stage process without additional human participation, thereby improving the automatic operation efficiency of the equipment, thereby increasing the equipment's production capacity and achieving the environmental protection effect of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] FIG. 1 is a schematic diagram of a fast-filling hydraulic system and an auxiliary return system of a zigzag-type high-efficiency multi-blade shearing machine according to the present invention.

[0026] FIG. 2 is a block diagram of the present invention. Figure 1 A partial enlarged view of the location of the Sinopec pump-motor unit component system.

[0027] FIG. 3 is a block diagram of the present invention. Figure 1 A partial enlarged view of the medium shear cylinder and its control valve component system.

[0028] FIG. 4 is a block diagram of the present invention. Figure 1 A partial enlarged view of the medium-pressure cylinder and its control valve component system.

[0029] FIG. 5 is a block diagram of the present invention. Figure 1 A partial enlarged view of the liquid-filled component system and the air source component system.

[0030] FIG. 6 is a block diagram of the present invention. Figure 1 A partial enlarged view of the medium-cycle cooling component system. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0032] Embodiment 1: See also Figure 1-6The fast-filling hydraulic system of the zigzag high-efficiency multi-blade shearing machine includes an oil pump motor component system 2 for providing hydraulic energy, the oil pump motor component system 2 is connected to the shearing cylinder and its control valve component system for performing the shearing action, and the oil pump motor component system 2 is also connected to the pressing cylinder and its control valve component system for performing the pressing action; the shearing cylinder and its control valve component system and the pressing cylinder and its control valve component system are simultaneously connected to the liquid filling component system 34, and the liquid filling component system 34 is connected to the air source component system; it also includes a circulating cooling component system, and the circulating cooling component system is connected to the main oil tank 3 through an oil return pipe. The fast filling hydraulic system of the present invention can mainly realize that the first oil outlet P1 and the second oil outlet P2 after the confluence of multiple oil pump motor groups are connected to the shear cylinder control valve group 22 and the pressure cylinder control valve group 14 respectively, and the shear cylinder control valve group 22 and the pressure cylinder control valve group 14 are connected by the confluence valve group 21; the shear and pressure cylinders are three groups of cylinders in the form of a pressurized fast filling system, and the pressurized fast filling system is assisted by the air source component system; the shear cylinder has a rod chamber return control valve group 28, and the pressure cylinder has a rod chamber return control valve group 20, which are respectively connected to the rod chamber of the fast filling cylinder; the external control valve group 8 is respectively connected to the X port of each control valve group, which is used to provide a fast response of the control valve group. The present invention provides an auxiliary return control system while overcoming the negative pressure filling defects of the traditional filling system. It effectively improves the effective working efficiency of the gantry scrap steel shearing machine. Thereby improving the equipment production capacity and achieving the environmental protection effect of energy saving and emission reduction.

[0033] Furthermore, the oil pump motor component system 2 includes a main oil tank 3, on which a liquid level controller and an oil temperature controller 5 are installed; multiple groups of first oil pump motor groups 4 are connected to the main oil tank 3; the second oil pump motor group 6 is connected to the main oil tank 3; the outlets of the first oil pump motor group 4 and the second oil pump motor group 6 are connected to the pump port control valve group 7, the first oil outlet P1 of the pump port control valve group 7 is connected to the shear cylinder control valve group 22, and the second oil outlet P2 of the pump port control valve group 7 is connected to the press cylinder control valve group 14; the shear cylinder control valve group 22 and the press cylinder control valve group 14 are connected through the merging valve group 21. The above-mentioned oil pump motor component system 2 can be used to provide hydraulic power during system operation.

[0034] Furthermore, the oil pump motor component system 2 also includes an external control valve group 8 connected to the outlet of the second oil pump motor group 6, and also includes an accumulator 9 and a valve assembly 1 installed on the oil return pipe. The solenoid valve and the charging valve of the cartridge valve are controlled by the external control valve group 8 and the accumulator 9, so as to improve the action efficiency of the cartridge valve and the charging valve, and effectively improve the working efficiency of the whole system.

[0035] Furthermore, the shear cylinder and its control valve component system are composed of three shear cylinders 25 of the same specifications, a shear cylinder rodless chamber filling valve 26, a first filling valve control valve group 24, a first pressure sensor 23, a shear cylinder control valve group 22, a shear cylinder rod chamber return control valve group 28, a shear cylinder rod chamber filling valve 27 and a shear cylinder stroke control laser sensor 35; the shear cylinder control valve group 22 is connected to the first oil outlet P1 after the oil pump motor group component system 2 converges, and the shear cylinder control valve group 22 includes a first working oil port A1-1, a second working oil port A1-2 and a third working oil port B1-1, and the first working oil port A1-1 is connected to the shear oil The fast cylinder rodless chamber in the middle position of the cylinder 25, the second working oil port A1-2 is connected to the rodless chamber of the auxiliary cylinder at the left and right positions of the shearing cylinder 25, and the rodless chamber of the auxiliary cylinder at the left and right positions of the shearing cylinder 25 is connected to the shearing cylinder rodless chamber filling valve 26; the first oil port P1-1 of the shearing cylinder rod chamber return control valve group 28 is connected to the first oil outlet P1, the third oil port P1-3 of the shearing cylinder rod chamber return control valve group 28 is connected to the rod chamber of the auxiliary cylinder at the left and right positions of the shearing cylinder 25, and the rod chamber of the auxiliary cylinder at the left and right positions of the shearing cylinder 25 is connected to the shearing cylinder rod chamber filling valve 27, and the first pressure sensor 23 is installed with the first oil outlet P1 of the shearing cylinder control valve group 22. The shearing operation of the material can be realized by the above-mentioned shearing cylinder and its control valve component system.

[0036] Furthermore, the pressurizing cylinder and its control valve component system are composed of three pressurizing cylinders 17 of the same specifications, a pressurizing cylinder rodless chamber filling valve 18, a second filling valve control valve group 16, a second pressure sensor 15, a pressurizing cylinder control valve group 14, a pressurizing cylinder rod chamber return control valve group 20, a pressurizing cylinder rod chamber filling valve 19 and a pressurizing cylinder stroke control laser sensor 36; the pressurizing cylinder control valve group 14 is connected to the second oil outlet P2 after the oil pump motor group converges, the pressurizing cylinder control valve group 14 has a fourth working oil port A2-1, a fifth working oil port A2-2 and a sixth working oil port B2-1, and the fourth working oil port A2-1 is connected to the pressurizing cylinder 17 The rodless cavity of the fast cylinder in the middle position, the fifth working oil port A2-2 is connected to the rodless cavity of the auxiliary cylinder at the left and right positions of the pressing cylinder 17, and the rodless cavity of the auxiliary cylinder at the left and right positions of the pressing cylinder 17 is connected to the filling valve 18 of the rodless cavity of the pressing cylinder; the second oil port P2-1 of the return control valve group 20 of the rod cavity of the pressing cylinder is connected to the second oil outlet P2, the fourth oil port P2-3 of the return control valve group 20 of the rod cavity of the pressing cylinder is connected to the rod cavity of the auxiliary cylinder at the left and right positions of the pressing cylinder 17, and the rod cavity of the auxiliary cylinder at the left and right positions of the pressing cylinder 17 is connected to the filling valve 20 of the rod cavity of the pressing cylinder, and the second pressure sensor 15 is installed with the second oil outlet P2 of the control valve group 14 of the pressing cylinder. The pressing operation of the material can be realized by the above-mentioned pressing cylinder and its control valve component system.

[0037] Furthermore, the liquid filling component system 34 is composed of a pressurized liquid filling oil tank 29, a liquid level controller 30, an oil temperature controller 31, a pressure sensor 32, a safety valve 33 and various connecting oil ports connected thereto; the liquid level controller 30, the oil temperature controller 31, the pressure sensor 32 and the safety valve 33 are all installed on the top of the pressurized liquid filling oil tank 29. The liquid filling operation of the hydraulic system can be realized through the above-mentioned liquid filling component system 34.

[0038] Furthermore, the air source component system is composed of an air compressor 37, a pneumatic triplet 38 and a two-way valve group 39; the first air outlet K1 of the two-way valve group 39 is connected to the top of the pressurized liquid filling tank 29. The air source component system can be used to provide pressure to the liquid filling component system 34 during operation. The pressurized liquid filling tank 29 is filled with pure high-pressure air through the air compressor 37, the pneumatic triplet 38 and the two-way valve group 39 through the K1 port, so that the pressurized liquid filling tank 29 is always filled with the set pressure value, forming positive pressure filling, overcoming the defect of negative pressure filling of the traditional liquid filling system, and improving the filling efficiency.

[0039] Furthermore, the circulating cooling component system is composed of an oil pump 10, a heat exchanger 40, a filter 11, a cooling tower 12 and a connecting valve 13; the oil suction pipe of the oil pump 10 is connected to the connecting port R6 of the pressurized liquid filling tank 29 through the connecting valve 13, and the oil outlet of the oil pump 10 passes through the heat exchanger 40 and the filter 11 and is connected to the main oil tank 3.

[0040] Furthermore, the shear cylinder stroke control laser sensor 35 and the press cylinder stroke control laser sensor 36 are used for auxiliary control of the scrap steel shearing machine's fast filling hydraulic system; Furthermore, the fast cylinders and auxiliary cylinders of the shear cylinder 25 and the press cylinder 17 have the same specifications and models, so as to reduce the differences in sealing and structure of similar cylinders.

[0041] Embodiment 2: Control method of fast filling hydraulic system of folding line high-efficiency multi-blade shearing machine: During the operation of the system, the corresponding solenoid valve of the pressure cylinder control valve group 14 is energized, so that the first cartridge valve C1 and the third cartridge valve C3 are opened, forming a differential connection of the pressure cylinder fast cylinder, and at the same time, the solenoid valve of the second filling valve control valve group 16 is energized, and the rodless chamber filling valve 18 of the pressure cylinder is opened, and the differential rapid downward movement of the pressure cylinder fast cylinder drives the pressure auxiliary cylinder to move downward, and the rodless chamber filling valve 18 of the pressure cylinder fills the rodless chamber of the pressure auxiliary cylinder; when the pressure cylinder 17 extends to the set position value of the pressure cylinder stroke control laser sensor 36 or the second pressure sensor 15 reaches the set pressure value, the corresponding solenoid valve loses power; the rodless chamber filling valve 18 of the pressure cylinder and the differential connection are closed, and at the same time, the corresponding solenoid valve is energized, so that the second cartridge valve C2 and the sixth cartridge valve C6 are opened, the solenoid valve of the rod chamber return control valve group 20 of the pressure cylinder is energized, the rod chamber filling valve 19 of the pressure cylinder is opened, and the pressure cylinder 17 moves forward to compact the material. Through the above operation process, the pressing cylinder 17 can achieve a rapid pressing operation on the material.

[0042] Embodiment 3: During the operation of the system, the corresponding solenoid valve of the shear cylinder control valve group 22 is energized, the eleventh cartridge valve C11 and the thirteenth cartridge valve C13 are opened, forming a differential connection of the shear cylinder fast cylinder, and at the same time, the solenoid valve of the first filling valve control valve group 24 is energized, the shear cylinder rodless chamber filling valve 26 is opened, and the shear cylinder fast cylinder moves downward rapidly with the differential movement, driving the shear auxiliary cylinder to move downward, and the shear cylinder rodless chamber filling valve 26 fills the shear auxiliary cylinder rodless chamber; when the shear cylinder 25 extends to the position value set by the shear cylinder stroke control laser sensor 35 or the first pressure sensor 23 reaches the set pressure value, the corresponding solenoid valve loses power; the shear cylinder rodless chamber filling valve 26 and the differential connection are closed, and at the same time, the corresponding solenoid valve of the shear cylinder control valve group 22 is energized, the twelfth cartridge valve C12 and the sixteenth cartridge valve C16 are opened, the solenoid valve of the shear cylinder rod chamber return control valve group 28 is energized, the shear cylinder rod chamber filling valve 27 is opened, and the shear cylinder 25 moves forward to shear the material. Through the above operation process, the shearing cylinder 25 can achieve rapid shearing of the material.

[0043] Embodiment 4: The opening and closing of the merging valve group 21 can realize the communication between the first oil outlet P1 and the second oil outlet P2, and realize the merging and splitting of flow, pressure and power.

[0044] Embodiment 5: In addition to the main oil tank 3 that supplies the oil source for the oil pump motor unit, this form also sets up a high-position pressurized liquid filling tank 29. The pressurized liquid filling tank 29 is filled with pure high-pressure air through the first air outlet K1 via the air compressor 37, the pneumatic triplet 38 and the two-way valve group 39, so that the pressurized liquid filling tank 29 is always filled with the set pressure value, forming positive pressure filling, overcoming the defect of negative pressure filling of traditional filling systems, and improving filling efficiency.

[0045] Embodiment 6: The solenoid valve and the charging valve of the cartridge valve are controlled by a separate external control valve group 8 and an accumulator 9 to improve the action efficiency of the cartridge valve and the charging valve, thereby effectively improving the working efficiency of the entire system.

[0046] Embodiment 7: During the operation of the system, the corresponding solenoid valves of the shear cylinder control valve group 22 are energized, so that the fourteenth cartridge valve C14 and the fifteenth cartridge valve C15 are opened, and the corresponding solenoid valves of the press cylinder control valve group 14 are energized, so that the fourth cartridge valve C4 and the fifth cartridge valve C5 are opened, thereby realizing the pre-pressure relief of the high pressure when the shear cylinder and the press cylinder are working in the rodless chamber, and reducing the pressure shock when the filling valve opens to return oil.

[0047] Embodiment 8: During the operation of the system, the corresponding solenoid valve of the pressure cylinder control valve group 14 is energized, so that the third cartridge valve C3, the fourth cartridge valve C4, and the fifth cartridge valve C5 are opened, and at the same time, the solenoid valve of the second filling valve control valve group 16 is energized, and the solenoid valve of the rod chamber return control valve group 20 of the pressure cylinder is energized, the rod chamber filling valve 19 of the pressure cylinder is opened, and the rod chamber of the pressure cylinder fast cylinder is filled with oil, and the rodless chamber is discharged; the rod chamber of the pressure cylinder auxiliary cylinder absorbs oil through the pressure cylinder rod chamber filling valve 19, and the rodless chamber is discharged through the pressure cylinder rodless chamber filling valve 18, completing the rapid return of the pressure cylinder 17; overcoming the dry friction defect of the auxiliary cylinder rod chamber without oil inflow in the traditional filling system, ensuring the lubrication operation of the auxiliary cylinder of the pressure cylinder 17, and reducing the risk of damage to the pressure cylinder.

[0048] Embodiment 9: During the operation of the system, the corresponding solenoid valve of the shear cylinder control valve group 22 is energized, so that the thirteenth cartridge valve C13, the fourteenth cartridge valve C14, and the fifteenth cartridge valve C15 are opened, and at the same time, the solenoid valve of the first filling valve control valve group 24 is energized, and the solenoid valve of the shear cylinder rod chamber return control valve group 28 is energized, and the shear cylinder rod chamber filling valve 27 is opened, and the shear cylinder fast cylinder rod chamber is filled with oil, and the rodless chamber is discharged; the shear cylinder auxiliary cylinder rod chamber sucks oil through the shear cylinder rod chamber filling valve 27, and the rodless chamber is discharged through the shear cylinder rodless chamber filling valve 26, completing the rapid return of the shear cylinder 25. The dry friction defect of the auxiliary cylinder rod chamber without oil in the traditional filling system is overcome, ensuring the lubricated operation of the shear cylinder 25 auxiliary cylinder, and reducing the risk of damage to the press cylinder.

[0049] Embodiment 10: During the return stroke of the pressing cylinder 17 and the shearing cylinder 25, when the second pressure sensor 15 and the first pressure sensor 23 reach the upper limit of the pressure value set by the system, it is determined through the logical relationship that the return stroke of the pressing cylinder 17 or the shearing cylinder 25 is blocked, that is, the pressing head driven by the pressing cylinder is stuck or the scissors slide driven by the shearing cylinder is stuck. At this time, the shearing cylinder rod cavity filling valve 27 and the pressing cylinder rod cavity filling valve 19 are closed, and the eighth cartridge valve C8 and the eighteenth cartridge valve C18 are opened to complete the auxiliary return stroke of the auxiliary cylinder. This effectively solves the problem that the return stroke force of a single cylinder in the traditional filling system is small and cannot be returned in the stuck state, and avoids the ineffective labor of disassembling equipment to troubleshoot.

Claims

1. The quick-filling hydraulic system of the folding-line high-efficiency multi-blade shearing machine is characterized by: The invention comprises an oil pump motor component system (2) for providing hydraulic energy, wherein the oil pump motor component system (2) is connected to a shearing cylinder and a control valve component system for performing a shearing action, and the oil pump motor component system (2) is simultaneously connected to a material pressing cylinder and a control valve component system for performing a material pressing action; the shearing cylinder and its control valve component system and the material pressing cylinder and its control valve component system are simultaneously connected to a liquid filling component system (34), and the liquid filling component system (34) is connected to an air source component system; and the invention also comprises a circulating cooling component system, which is connected to a main oil tank (3) via an oil return pipe.

2. According to claim 1, the quick-filling hydraulic system for a folding-line high-efficiency multi-blade shearing machine is characterized in that: The oil pump motor component system (2) comprises a main oil tank (3), on which a liquid level controller and an oil temperature controller (5) are installed; a plurality of first oil pump motor groups (4) are connected to the main oil tank (3); a second oil pump motor group (6) is connected to the main oil tank (3); outlets of the first oil pump motor group (4) and the second oil pump motor group (6) are connected to a pump port control valve group (7), a first oil outlet (P1) of the pump port control valve group (7) is connected to a shear cylinder control valve group (22), and a second oil outlet (P2) of the pump port control valve group (7) is connected to a press cylinder control valve group (14); the shear cylinder control valve group (22) and the press cylinder control valve group (14) are connected via a merging valve group (21).

3. According to claim 2, the quick-filling hydraulic system for a folding-line high-efficiency multi-blade shearing machine is characterized in that: The oil pump motor assembly component system (2) further comprises an external control valve assembly (8) connected to the outlet of the second oil pump motor assembly (6), and also comprises an accumulator (9) and a valve assembly (1) mounted on the oil return pipe.

4. According to claim 2, the quick-filling hydraulic system for a folding-line high-efficiency multi-blade shearing machine is characterized in that: The shear cylinder and its control valve component system are composed of three shear cylinders (25) of the same specification, a shear cylinder rodless chamber filling valve (26), a first filling valve control valve group (24), a first pressure sensor (23), a shear cylinder control valve group (22), a shear cylinder rod chamber return control valve group (28), a shear cylinder rod chamber filling valve (27) and a shear cylinder stroke control laser sensor (35); the shear cylinder control valve group (22) is connected to the first oil outlet (P1) after the oil pump motor group component system (2) is merged, and the shear cylinder control valve group (22) includes a first working oil port (A1-1), a second working oil port (A1-2) and a third working oil port (B1-1), and the first working oil port (A1-1) is connected to the shear cylinder ( The second working oil port (A1-2) is connected to the rodless chamber of the auxiliary cylinder at the left and right positions of the shearing cylinder (25), and the rodless chamber of the auxiliary cylinder at the left and right positions of the shearing cylinder (25) is connected to the shearing cylinder rodless chamber filling valve (26); the first oil port (P1-1) of the shearing cylinder rod chamber return control valve group (28) is connected to the first oil outlet (P1), the third oil port (P1-3) of the shearing cylinder rod chamber return control valve group (28) is connected to the rod chamber of the auxiliary cylinder at the left and right positions of the shearing cylinder (25), and the rod chamber of the auxiliary cylinder at the left and right positions of the shearing cylinder (25) is connected to the shearing cylinder rod chamber filling valve (27), and the first pressure sensor (23) is installed with the first oil outlet (P1) of the shearing cylinder control valve group (22).

5. According to claim 4, the quick-filling hydraulic system for a folding-line high-efficiency multi-blade shearing machine is characterized in that: The pressurizing cylinder and its control valve component system are composed of three pressurizing cylinders (17) of the same specification, a pressurizing cylinder rodless cavity filling valve (18), a second filling valve control valve group (16), a second pressure sensor (15), a pressurizing cylinder control valve group (14), a pressurizing cylinder rod cavity return control valve group (20), a pressurizing cylinder rod cavity filling valve (19) and a pressurizing cylinder stroke control laser sensor (36); the pressurizing cylinder control valve group (14) is connected to the second oil outlet (P2) after the oil pump motor group converges, the pressurizing cylinder control valve group (14) has a fourth working oil port (A2-1), a fifth working oil port (A2-2) and a sixth working oil port (B2-1), the fourth working oil port (A2-1) is connected to the middle of the pressurizing cylinder (17) The fifth working oil port (A2-2) is connected to the rodless chamber of the auxiliary cylinder at the left and right positions of the pressing cylinder (17), and the rodless chamber of the auxiliary cylinder at the left and right positions of the pressing cylinder (17) is connected to the rodless chamber filling valve (18) of the pressing cylinder; the second oil port (P2-1) of the return control valve group (20) of the rod chamber of the pressing cylinder is connected to the second oil outlet (P2), the fourth oil port (P2-3) of the return control valve group (20) of the rod chamber of the pressing cylinder is connected to the rod chamber of the auxiliary cylinder at the left and right positions of the pressing cylinder (17), and the rod chamber of the auxiliary cylinder at the left and right positions of the pressing cylinder (17) is connected to the rod chamber filling valve (20) of the pressing cylinder, and the second pressure sensor (15) is installed with the second oil outlet (P2) of the pressing cylinder control valve group (14).

6. The fast-filling hydraulic system for a folding-line high-efficiency multi-blade shearing machine according to claim 5, characterized in that: The liquid filling component system (34) is composed of a pressurized liquid filling oil tank (29), a liquid level controller (30), an oil temperature controller (31), a pressure sensor (32), a safety valve (33) and various connecting oil ports connected thereto; the liquid level controller (30), the oil temperature controller (31), the pressure sensor (32) and the safety valve (33) are all installed on the top of the pressurized liquid filling oil tank (29).

7. The fast-filling hydraulic system for a folding-line high-efficiency multi-blade shearing machine according to claim 6 is characterized in that: The air source component system is composed of an air compressor (37), a pneumatic triplet (38) and a two-way valve group (39); a first air outlet (K1) of the two-way valve group (39) is connected to the top of the pressurized liquid-filled oil tank (29).

8. The fast-filling hydraulic system for a folding-line high-efficiency multi-blade shearing machine according to claim 6 is characterized in that: The circulating cooling component system comprises an oil guide pump (10), a heat exchanger (40), a filter (11), a cooling tower (12), and a connecting valve (13); an oil suction pipe of the oil guide pump (10) is connected to a connecting port (R6) of a pressurized liquid-filled oil tank (29) via the connecting valve (13), and an oil outlet of the oil guide pump (10) passes through the heat exchanger (40) and the filter (11) and is connected to a main oil tank (3).

9. The fast-filling hydraulic system for a folding-line high-efficiency multi-blade shearing machine according to claim 6, characterized in that: The shear cylinder stroke control laser sensor (35) and the press cylinder stroke control laser sensor (36) are used for auxiliary control of the fast filling hydraulic system of the scrap steel shearing machine; The fast cylinder and the auxiliary cylinder of the shear cylinder (25) and the pressing cylinder (17) have the same specifications and models, so as to reduce the differences in sealing and structure of similar cylinders.

10. The control method of the fast-filling hydraulic system of the folding-line high-efficiency multi-blade shearing machine according to any one of claims 1 to 9, characterized in that: During the operation of the system, the corresponding solenoid valve of the material pressing cylinder control valve group (14) is energized, so that the first cartridge valve (C1) and the third cartridge valve (C3) are opened, forming a differential connection between the material pressing cylinder and the quick cylinder. At the same time, the solenoid valve of the second filling valve control valve group (16) is energized, and the filling valve (18) of the rodless cavity of the material pressing cylinder is opened. With the differential rapid downward movement of the quick cylinder of the material pressing cylinder, the material pressing auxiliary cylinder is driven downward, and the filling valve (18) of the rodless cavity of the material pressing cylinder fills the rodless cavity of the material pressing auxiliary cylinder. The material pressing cylinder (17) When the cylinder reaches the set position value of the stroke control laser sensor (36) or the second pressure sensor (15) reaches the set pressure value, the corresponding solenoid valve loses power; the rodless chamber filling valve (18) and the differential connection of the cylinder are closed, and the corresponding solenoid valve is energized, so that the second cartridge valve (C2) and the sixth cartridge valve (C6) are opened, the solenoid valve of the rod chamber return control valve group (20) of the cylinder is energized, the rod chamber filling valve (19) of the cylinder is opened, and the cylinder (17) moves forward to press the material; During the operation of the system, the corresponding solenoid valve of the shear cylinder control valve group (22) is energized, the eleventh cartridge valve (C11) and the thirteenth cartridge valve (C13) are opened, forming a differential connection between the shear cylinder and the quick cylinder. At the same time, the solenoid valve of the first filling valve control valve group (24) is energized, the shear cylinder rodless chamber filling valve (26) is opened, and the shear cylinder quick cylinder moves downward with the differential rapid movement, driving the shear auxiliary cylinder downward. The shear cylinder rodless chamber filling valve (26) fills the rodless chamber of the shear auxiliary cylinder. The shear cylinder (25) extends to the shear cylinder. When the stroke control laser sensor (35) sets the position value or the first pressure sensor (23) reaches the set pressure value, the corresponding solenoid valve loses power; the shear cylinder rodless chamber filling valve (26) and the differential connection are closed, and at the same time, the corresponding solenoid valve of the shear cylinder control valve group (22) is energized, the twelfth cartridge valve (C12) and the sixteenth cartridge valve (C16) are opened, the solenoid valve of the shear cylinder rod chamber return control valve group (28) is energized, the shear cylinder rod chamber filling valve (27) is opened, and the shear cylinder (25) moves forward to shear the material; The opening and closing of the merging valve group (21) can realize the communication between the first oil outlet (P1) and the second oil outlet (P2), and realize the merging and splitting of flow, pressure and power; By setting up a high-position pressurized liquid filling oil tank (29), the pressurized liquid filling oil tank (29) is filled with pure high-pressure air through the air compressor (37), the pneumatic triplet (38) and the two-way valve group (39) through the first air outlet (K1), so that the pressurized liquid filling oil tank (29) is always filled with a set pressure value, forming a positive pressure liquid filling; The solenoid valve and the charging valve of the cartridge valve are controlled by a separate external control valve group (8) and an accumulator (9) to improve the operating efficiency of the cartridge valve and the charging valve; During the operation of the system, the corresponding solenoid valve of the shear cylinder control valve group (22) is energized, so that the fourteenth cartridge valve (C14) and the fifteenth cartridge valve (C15) are opened, and the corresponding solenoid valve of the press cylinder control valve group (14) is energized, so that the fourth cartridge valve (C4) and the fifth cartridge valve (C5) are opened, thereby realizing the pre-pressure relief of the high pressure when the shear cylinder and the press cylinder are working without a rod, and reducing the pressure shock when the filling valve is opened to return oil; During the operation of the system, the corresponding solenoid valve of the pressure cylinder control valve group (14) is energized, so that the third cartridge valve (C3), the fourth cartridge valve (C4), and the fifth cartridge valve (C5) are opened, and at the same time, the solenoid valve of the second filling valve control valve group (16) is energized, and the solenoid valve of the pressure cylinder rod chamber return control valve group (20) is energized, the pressure cylinder rod chamber filling valve (19) is opened, and the pressure cylinder fast cylinder rod chamber is filled with oil, and the rodless chamber is discharged; the pressure cylinder auxiliary cylinder rod chamber sucks oil through the pressure cylinder rod chamber filling valve (19), and the rodless chamber is discharged through the pressure cylinder rodless chamber filling valve (18), completing the rapid return of the pressure cylinder (17); During the operation of the system, the corresponding solenoid valve of the shear cylinder control valve group (22) is energized, so that the thirteenth cartridge valve (C13), the fourteenth cartridge valve (C14), and the fifteenth cartridge valve (C15) are opened. At the same time, the solenoid valve of the first filling valve control valve group (24) is energized, and the solenoid valve of the shear cylinder rod chamber return control valve group (28) is energized, and the shear cylinder rod chamber filling valve (27) is opened, and the shear cylinder fast cylinder rod chamber is filled with oil, and the rodless chamber is discharged; the shear cylinder auxiliary cylinder rod chamber is sucked through the shear cylinder rod chamber filling valve (27), and the rodless chamber is discharged through the shear cylinder rodless chamber filling valve (26), completing the rapid return of the shear cylinder (25); During the return stroke of the pressing cylinder (17) and the shearing cylinder (25), when the second pressure sensor (15) and the first pressure sensor (23) reach the upper pressure value set by the system, it is determined through a logical relationship that the return stroke of the pressing cylinder (17) or the shearing cylinder (25) is blocked, that is, the pressing head driven by the pressing cylinder is stuck or the scissors slide driven by the shearing cylinder is stuck. At this time, the rod chamber filling valve (27) of the shearing cylinder and the rod chamber filling valve (19) of the pressing cylinder are closed, and the eighth cartridge valve (C8) and the eighteenth cartridge valve (C18) are opened to complete the auxiliary return stroke of the auxiliary cylinder.

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