Quick liquid filling hydraulic system of broken line type efficient multi-cutter shearing machine

Abstract

The utility model provides a broken line type efficient multi-cutter shearing machine rapid liquid filling hydraulic system which 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 utility model provides an auxiliary return stroke control system while overcoming the negative pressure liquid filling defect of the 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 utility model relates to the technical field of scrap metal shearing equipment, in particular to a quick liquid-filling hydraulic system for a broken-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 increase the speed, 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 an optimal 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. Utility Model Content

[0003] The purpose of this utility model is to address the aforementioned issues by providing a rapid hydraulic filling system for a high-efficiency, multi-blade shearing machine. This system overcomes the negative pressure filling drawbacks of conventional filling systems while also providing an auxiliary return stroke control system. This effectively improves the operating efficiency of gantry-type scrap shears, thereby increasing equipment production capacity and achieving environmentally friendly energy conservation and emission reduction benefits.

[0004] In order to achieve the above-mentioned technical features, the purpose of the utility model is achieved as follows: the rapid filling hydraulic system of the zigzag type 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 a first 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 the 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 pressing cylinder control valve group; the shear cylinder control valve group and the pressing cylinder control valve group are connected through a merging valve group.

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

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

[0009] Preferably, the liquid-filled component system consists of a pressurized liquid-filled oil tank, a liquid level controller, a second oil temperature controller, a pressure sensor, a safety valve and various connecting oil ports connected thereto; the liquid level controller, the second 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 consists 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 suction pipe of the oil guide pump 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 and is 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;

[0013] The quick cylinder and 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 similar cylinders.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model overcomes the negative pressure filling defect of the traditional filling system and provides an auxiliary return control system, which effectively improves the working efficiency of the gantry type scrap steel shearing machine.

[0016] 2. The quick cylinder and auxiliary cylinder of the shearing cylinder and the pressing cylinder of the utility model have the same specifications and models, which reduces the differences in seals and structures of similar cylinders.

[0017] 3. The utility model is connected to the shear cylinder control valve group and the press cylinder control valve group respectively through the oil ports after the confluence of multiple oil pump motor groups, 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 cavity of the fast filling cylinder; 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.

[0018] 4. The utility model can realize the communication 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.

[0019] 5. In addition to the main oil tank that supplies the oil source for the oil pump motor unit, the utility model 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 through the air compressor, pneumatic triplex and 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 traditional liquid filling system and improving filling efficiency.

[0020] 6. The utility model provides a separate external control valve group and accumulator, which control the solenoid valve and charging valve of the cartridge valve through the external control valve group and accumulator, thereby improving the operating efficiency of the cartridge valve and the charging valve, and effectively improving the working efficiency of the entire system.

[0021] 7. The system of the utility model can realize the pre-pressure relief of high pressure when the rodless chamber of the shearing cylinder and the pressing cylinder is working, and reduce the pressure shock when the filling valve is opened to return oil.

[0022] 8. The utility model overcomes the dry friction defect of the auxiliary oil cylinder of the traditional liquid filling system with a rod cavity but no oil, 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.

[0023] 9. The utility model 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 the equipment to troubleshoot.

[0024] 10. The auxiliary return process of this utility model is self-executing during the operation of the equipment stage process by judging the logical relationship after the sensor reads the value, without the need for additional human participation, thereby improving the automatic operation efficiency of the equipment, thereby increasing the equipment production capacity and achieving the environmental protection effect of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] FIG1 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 of the present invention.

[0027] Figure 2 is a diagram of the present invention Figure 1 A partial enlarged view of the location of the PetroChina pump motor unit component system.

[0028] Figure 3 is a diagram of the present invention Figure 1 A partial enlarged view of the medium shear cylinder and its control valve component system.

[0029] Figure 4 is a diagram of the present invention Figure 1 A partial enlarged view of the medium-pressure material cylinder and its control valve component system.

[0030] Figure 5 is a diagram of the present invention Figure 1 A partial enlarged view of the liquid-filled component system and the air source component system.

[0031] Figure 6 is a diagram of the present invention Figure 1 A partial enlarged view of the medium-circulation cooling component system. DETAILED DESCRIPTION

[0032] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0033] Example 1:

[0034] See also Figure 1-6 The fast-filling hydraulic system of the zigzag-type high-efficiency multi-blade shearing machine includes an oil pump motor component system 2 for providing hydraulic energy, and 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 a return oil pipe. The utility model's rapid hydraulic filling system primarily connects the first and second oil outlets P1 and P2, after the confluence of multiple oil pump motors, to the shearing cylinder control valve group 22 and the pressing cylinder control valve group 14, respectively. The shearing cylinder control valve group 22 and the pressing cylinder control valve group 14 are connected by a converging valve group 21. The shearing and pressing cylinders form a three-group pressurized rapid filling system, assisted by an air source component system. The shearing cylinder has a rod chamber return control valve group 28, and the pressing cylinder has a rod chamber return control valve group 20, respectively connected to the rod chamber of the rapid filling cylinder. The external control valve group 8 is connected to the X port of each control valve group to provide a rapid response for the control valve group. While overcoming the negative pressure filling defects of conventional filling systems, the utility model also provides an auxiliary return control system. This effectively improves the effective working efficiency of the gantry-type scrap steel shearing machine, thereby increasing equipment production capacity and achieving the environmentally friendly effect of energy conservation and emission reduction.

[0035] Furthermore, the oil pump motor assembly system 2 includes a main oil tank 3, on which a liquid level controller and a first oil temperature controller 5 are installed; multiple 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; the 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, 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 pressure cylinder control valve group 14; the shear cylinder control valve group 22 and the pressure cylinder control valve group 14 are connected via a merging valve group 21. The above-mentioned oil pump motor assembly system 2 can be used to provide hydraulic power during system operation.

[0036] Furthermore, the oil pump motor assembly system 2 includes an externally controlled valve assembly 8 connected to the outlet of the second oil pump motor assembly 6, an accumulator 9 mounted on the oil return pipe, and a valve assembly 1. The externally controlled valve assembly 8 and accumulator 9 control the solenoid valve and charging valve of the cartridge valve, thereby improving the operating efficiency of the cartridge valve and charging valve, and effectively enhancing the operating efficiency of the entire system.

[0037] Furthermore, the shearing cylinder and its control valve component system are composed of three shearing cylinders 25 of the same specifications, a shearing cylinder rodless chamber filling valve 26, a first filling valve control valve group 24, a first pressure sensor 23, a shearing cylinder control valve group 22, a shearing cylinder rod chamber return control valve group 28, a shearing cylinder rod chamber filling valve 27 and a shearing cylinder stroke control laser sensor 35; the shearing 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 shearing 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 shearing oil The fast-acting rodless chamber in the middle of cylinder 25 and the second working oil port A1-2 are connected to the rodless chambers of the auxiliary cylinders in the left and right positions of shearing cylinder 25. The rodless chambers of the auxiliary cylinders in the left and right positions of shearing cylinder 25 are also connected to the rodless chamber filling valve 26 of the shearing cylinder. The first oil port P1-1 of the shearing cylinder rod chamber return control valve assembly 28 is connected to the first oil outlet P1. The third oil port P1-3 of the shearing cylinder rod chamber return control valve assembly 28 is connected to the rod chambers of the auxiliary cylinders in the left and right positions of shearing cylinder 25. The rod chambers of the auxiliary cylinders in the left and right positions of shearing cylinder 25 are also connected to the rod chamber filling valve 27 of the shearing cylinder. The first pressure sensor 23 is installed at the first oil outlet P1 of the shearing cylinder control valve assembly 22. The above-mentioned shearing cylinder and its control valve component system can achieve material shearing operations.

[0038] Furthermore, the pressing cylinder and its control valve component system are composed of three pressing cylinders 17 of the same specifications, a pressing cylinder rodless cavity filling valve 18, a second filling valve control valve group 16, a second pressure sensor 15, a pressing cylinder control valve group 14, a pressing cylinder rod cavity return control valve group 20, a pressing cylinder rod cavity filling valve 19 and a pressing cylinder stroke control laser sensor 36; the pressing cylinder control valve group 14 is connected to the second oil outlet P2 after the oil pump motor group converges, the pressing 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 pressing cylinder 17 The fifth working oil port A2-2 of the middle fast cylinder rodless chamber is connected to the rodless chamber of the auxiliary cylinder at the left and right positions of the pressing cylinder 17. The rodless chamber of the auxiliary cylinder at the left and right positions of the pressing cylinder 17 is also 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 pressing cylinder rod chamber is connected to the second oil outlet P2. The fourth oil port P2-3 of the return control valve group 20 of the pressing cylinder rod chamber is connected to the rod chamber of the auxiliary cylinder at the left and right positions of the pressing cylinder 17. The rod chamber of the auxiliary cylinder at the left and right positions of the pressing cylinder 17 is also connected to the rod chamber filling valve 19 of the pressing cylinder rod chamber. The second pressure sensor 15 is installed at the second oil outlet P2 of the pressing cylinder control valve group 14. The above-mentioned pressing cylinder and its control valve component system can achieve material compaction.

[0039] Furthermore, the liquid filling component system 34 comprises a pressurized liquid filling 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; the liquid level controller 30, oil temperature controller 31, pressure sensor 32, and safety valve 33 are all mounted on top of the pressurized liquid filling tank 29. The above-mentioned liquid filling component system 34 enables the hydraulic system to be filled.

[0040] Furthermore, the air source component system comprises an air compressor 37, a pneumatic triplet 38, and a two-way valve assembly 39; the first air outlet K1 of the two-way valve assembly 39 is connected to the top of the pressurized liquid filling tank 29. This 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 assembly 39 via the K1 port, constantly filling the pressurized liquid filling tank 29 to the set pressure value, creating positive pressure filling. This overcomes the negative pressure filling drawback of traditional liquid filling systems and improves filling efficiency.

[0041] Furthermore, the circulating cooling component system consists 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 connection 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.

[0042] 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;

[0043] Furthermore, the fast cylinders and auxiliary cylinders of the shearing 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.

[0044] Example 2:

[0045] Control method of fast filling hydraulic system of folding line high-efficiency multi-blade shearing machine:

[0046] 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 pressure cylinder rodless chamber filling valve 18 is opened. With the differential rapid downward movement of the pressure cylinder fast cylinder, the pressure auxiliary oil cylinder is driven downward, and the pressure cylinder rodless chamber filling valve 18 fills the pressure auxiliary oil cylinder rodless chamber; when the pressure cylinder 17 extends to the position value set by 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 pressure cylinder rodless chamber filling valve 18 and the differential connection 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 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 17 moves forward to press the material. Through the above operation process, the pressing cylinder 17 can achieve a rapid pressing operation on the material.

[0047] Example 3:

[0048] 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 set position value of 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 a rapid shearing operation on the material.

[0049] Example 4:

[0050] 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.

[0051] Example 5:

[0052] In addition to the main oil tank 3 that supplies oil to 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 liquid filling systems and improving filling efficiency.

[0053] Example 6:

[0054] 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, thereby effectively improving the working efficiency of the entire system.

[0055] Example 7:

[0056] 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 pressure 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 high-pressure pre-pressure relief when the shear cylinder and the pressure cylinder rodless chamber are working, and reducing the pressure shock when the filling valve opens to return oil.

[0057] Example 8:

[0058] 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. 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, the pressure cylinder fast cylinder rod chamber is filled with oil, and the rodless chamber is discharged with oil; the pressure cylinder auxiliary cylinder rod chamber 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 oil cylinder rod chamber of the traditional filling system without oil inflow, ensuring the lubricated operation of the auxiliary oil cylinder of the pressure cylinder 17, and reducing the risk of damage to the pressure cylinder.

[0059] Example 9:

[0060] During system operation, the corresponding solenoid valves of the shear cylinder control valve group 22 are energized, causing the thirteenth cartridge valve C13, the fourteenth cartridge valve C14, and the fifteenth cartridge valve C15 to open. Simultaneously, 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, opening the shear cylinder rod chamber filling valve 27. Oil enters the rod chamber of the shear cylinder's quick cylinder, while oil is discharged from the rodless chamber. The shear cylinder's auxiliary cylinder's rod chamber draws oil through the shear cylinder's rod chamber filling valve 27, while oil is discharged from the rodless chamber through the shear cylinder's rodless chamber filling valve 26, completing the quick return stroke of the shear cylinder 25. This overcomes the dry friction defect of the auxiliary cylinder rod chamber in conventional filling systems, ensuring lubricated operation of the shear cylinder 25's auxiliary cylinder and reducing the risk of damage to the press cylinder.

[0061] Example 10:

[0062] During the return stroke of the pressing cylinder 17 or shearing cylinder 25, if the second pressure sensor 15 or the first pressure sensor 23 reaches the upper pressure limit set by the system, a logical relationship will be used to determine that the return stroke of the pressing cylinder 17 or shearing cylinder 25 is blocked, i.e., the pressing head driven by the pressing cylinder is stuck or the shear 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 of the traditional filling system with a single cylinder having a small return force and being unable to return in the stuck state, and avoids the ineffective labor of disassembling the equipment for troubleshooting.

Claims

1. The fast 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 pressing cylinder and a control valve component system for performing a 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 a liquid filling component system (34), and the liquid filling component system (34) is connected to an air source component system; and further comprises a circulating cooling component system, which is connected to a main oil tank (3) via an oil return pipe.

2. The rapid liquid filling hydraulic system for a zigzag high-efficiency multi-blade shearing machine according to claim 1, characterized in that: The oil pump motor assembly component system (2) includes a main oil tank (3), on which a liquid level controller and a first 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. The rapid liquid filling hydraulic system for a zigzag high-efficiency multi-blade shearing machine according to claim 2, characterized in that: The oil pump motor assembly component system (2) further includes an external control valve assembly (8) connected to the outlet of the second oil pump motor assembly (6), and also includes an accumulator (9) and a valve assembly (1) installed on the oil return pipe.

4. The rapid liquid filling hydraulic system for a zigzag high-efficiency multi-blade shearing machine according to claim 2, characterized in that: The shearing cylinder and its control valve component system are composed of three shearing cylinders (25) of the same specifications, a shearing cylinder rodless cavity filling valve (26), a first filling valve control valve group (24), a first pressure sensor (23), a shearing cylinder control valve group (22), a shearing cylinder rod cavity return control valve group (28), a shearing cylinder rod cavity filling valve (27) and a shearing cylinder stroke control laser sensor (35); the shearing 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 shearing 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 shearing cylinder ( 25) The fast cylinder rodless chamber at the middle position, 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 at the same time, 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 at the same time, 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. The rapid liquid filling hydraulic system for a zigzag high-efficiency multi-blade shearing machine according to claim 4, characterized in that: The pressurizing oil cylinder and its control valve component system are composed of three pressurizing oil cylinders (17) of the same specifications, a pressurizing oil cylinder rodless cavity filling valve (18), a second filling valve control valve group (16), a second pressure sensor (15), a pressurizing oil cylinder control valve group (14), a pressurizing oil cylinder rod cavity return control valve group (20), a pressurizing oil cylinder rod cavity filling valve (19) and a pressurizing oil cylinder stroke control laser sensor (36); the pressurizing oil cylinder control valve group (14) is connected to the second oil outlet (P2) after the oil pump motor group converges, and the pressurizing oil 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 middle of the pressurizing oil cylinder (17). The fifth working oil port (A2-2) is connected to the rodless chamber of the left and right auxiliary cylinder of the pressing oil cylinder (17), and the rodless chamber of the left and right auxiliary cylinder of the pressing oil cylinder (17) is connected to the rodless chamber filling valve (18) of the pressing oil cylinder; the second oil port (P2-1) of the return control valve group (20) of the pressing oil cylinder rod chamber is connected to the second oil outlet (P2), the fourth oil port (P2-3) of the return control valve group (20) of the pressing oil cylinder rod chamber is connected to the rod chamber of the left and right auxiliary cylinder of the pressing oil cylinder (17), and the rod chamber of the left and right auxiliary cylinder of the pressing oil cylinder (17) is connected to the rod chamber filling valve (19) of the pressing oil cylinder, and the second pressure sensor (15) is installed with the second oil outlet (P2) of the pressing oil cylinder control valve group (14).

6. The rapid liquid filling hydraulic system for a zigzag 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 tank (29), a liquid level controller (30), a second oil temperature controller (31), a pressure sensor (32), a safety valve (33) and connecting oil ports thereof; the liquid level controller (30), the second oil temperature controller (31), the pressure sensor (32) and the safety valve (33) are all installed on the top of the pressurized liquid filling tank (29).

7. The rapid liquid filling hydraulic system for a zigzag high-efficiency multi-blade shearing machine according to claim 6, characterized in that: The air source component system consists 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-filled oil tank (29).

8. The rapid liquid filling hydraulic system for a zigzag high-efficiency multi-blade shearing machine according to claim 6, characterized in that: The circulating cooling component system consists of an oil guide 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 guide 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 guide pump (10) passes through the heat exchanger (40) and the filter (11) and is connected to the main oil tank (3).

9. The rapid liquid filling hydraulic system for a zigzag high-efficiency multi-blade shearing machine according to claim 6, characterized in that: The shear cylinder stroke control laser sensor (35) and the pressing cylinder stroke control laser sensor (36) are used for auxiliary control of the scrap steel shearing machine's rapid filling hydraulic system; The quick cylinders and auxiliary cylinders of the shearing 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.

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