CN201592286U - Hydraulic drive circuit of inclined throat shear - Google Patents
Hydraulic drive circuit of inclined throat shear Download PDFInfo
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- CN201592286U CN201592286U CN2010200102464U CN201020010246U CN201592286U CN 201592286 U CN201592286 U CN 201592286U CN 2010200102464 U CN2010200102464 U CN 2010200102464U CN 201020010246 U CN201020010246 U CN 201020010246U CN 201592286 U CN201592286 U CN 201592286U
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Abstract
A hydraulic drive circuit of an inclined throat shear, which belongs to technical field of steel plate processing, and is suitable for hydraulic drive of shears in a rolling production line or experimental line. The hydraulic drive circuit comprises a high-pressure pump source, an accumulator controller, a shear cylinder controller, a shear blade adjusting controller and a pressure plate cylinder controller, wherein a pressure oil port K1 is respectively connected with a pressure oil port K3, a pressure oil port K4, a pressure oil port K11 and a pressure oil port K14; a pressure oil port K2, a pressure oil port K7, a pressure oil port K10 and a pressure oil port K15 are connected with an oil tank; a working oil port K6 is connected with a rodless side of a shear cylinder through a hydraulic hose; a working oil port K5 is connected with one side with rod of the shear cylinder through a cylinder hose; a working oil port K9 is connected with the rodless side of the shear cylinder through a hydraulic hose; a working oil port K8 is connected with the side with rod of the shear cylinder through a cylinder hose; a working oil port 13 is connected with a rodless side of a pressure plate cylinder through a hydraulic hose; and a working oil port 12 is connected with one side with rod of the pressure plate cylinder through a cylinder hose.
Description
Technical field:
The utility model belongs to the iron and steel sheet and plate processing technique field, particularly relates to a kind of hydraulic drive circuit of inclined throat shears, is applicable to the hydraulic drive of rolling line or experiment wire shearing.
Background technology:
On output strip line or band steel experiment line, cutter is to use one of single devices very widely, is mainly used to the band steel is carried out tack, back-end crop or cuts off processing.The cutter that is widely used at present is a crank block structure shown in Figure 1, and when shearing oil cylinder and release, push rod travels forward under the drive of shearing oil cylinder and drives connecting rod and lower link travels forward.At this moment, lower scissor blade place frame moves upward under the constraint of guide rail, after waiting that cutting the band steel is compressed by pressure plate cylinder, shears oil cylinder and continues to move ahead, and makes the piston rod withdrawal of pressure plate cylinder, can will wait that cutting the band steel cuts off along with the continuation of lower scissor blade is up.When shearing the oil cylinder withdrawal, push rod and upward also withdrawal thereupon of connecting rod, lower link, it is descending to drive lower scissor blade, finishes shear action one time.As can be seen, shearing oil cylinder and pressure plate cylinder is the central core component of cutter equipment.Therefore, the whether reasonable performance that is directly connected to cutter of hydraulic cutter loop design.Because it is all very big to shear the volume of oil cylinder, for realizing the purpose of unloaded F.F., need all come into operation accumulator and hydraulic pump in the middle of shear history in existing hydraulic cutter loop; Treat that pressure plate cylinder compresses and wait to cut the band steel, enter and shear the worker when advancing, the hydraulic oil in the middle of the accumulator has consumed most, makes that to shear work speed limited, and shear ability incurs loss; If when guaranteeing unloaded F.F., guarantee that again the THE ADIABATIC SHEAR IN worker advances, need to select jumbo accumulator, this has just increased equipment cost and equipment volume.
The utility model content:
At existing hydraulic cutter loop if when guaranteeing unloaded F.F., guarantee that again the THE ADIABATIC SHEAR IN worker advances, need to select jumbo accumulator, increased the problem of equipment cost and equipment volume, the utility model provides a kind of hydraulic transmission loop of diagonal cutter shearing machine, this loop realizes shearing advancing fast of oil cylinder by the hydraulic differential loop when zero load, need not devote oneself to work by accumulator; Treat that pressure plate cylinder compresses and wait to cut the band steel that enter and shear the worker when advancing, accumulator is devoted oneself to work, and shears the oil cylinder rodless side and advances hydraulic oil, and the oil return of bar side joint is arranged, and realizes shearing the high active force output of oil cylinder, and has guaranteed high shearing work speed.
To achieve these goals, the utility model adopts following technical scheme, and a kind of hydraulic transmission loop of diagonal cutter shearing machine comprises high pressure pumping source, accumulator control device, shearing oil cylinder control device, cutting edge adjustment control device and pressure plate cylinder control device; The pressure hydraulic fluid port K1 of high pressure pumping source adjusts the pressure hydraulic fluid port K11 of control device with the pressure hydraulic fluid port K3 of accumulator control device, the pressure hydraulic fluid port K4 that shears the oil cylinder control device, cutting edge respectively and the pressure hydraulic fluid port K14 of pressure plate cylinder control device is connected; The oil return opening K2 of accumulator control device, the oil return opening K7 that shears the oil cylinder control device, cutting edge adjust the oil return opening K10 of control device and the oil return opening K15 of pressure plate cylinder control device is connected with fuel tank; The actuator port K6 that shears the oil cylinder control device is connected with the no bar side of shearing oil cylinder by the 3rd hydralic hose, and the actuator port K5 that shears the oil cylinder control device is connected with the bar side that has of shearing oil cylinder by the 4th hydralic hose; The actuator port K9 that cutting edge is adjusted control device is connected with the no bar side of shearing oil cylinder by the 3rd hydralic hose, and the actuator port K8 that cutting edge is adjusted control device is connected with the bar side that has of shearing oil cylinder by the 4th hydralic hose; The actuator port K13 of pressure plate cylinder control device is connected with the no bar side of pressure plate cylinder by first hydralic hose, and the actuator port K12 of pressure plate cylinder control device is connected with the bar side that has of pressure plate cylinder by second hydralic hose.
Described high pressure pumping source comprises first check valve, fuel tank, electromagnetic relief valve, the 4th Pressure gauge, hydraulic pump and is attached thereto the motor that connects by shaft coupling; The inlet port of hydraulic pump is connected with fuel tank, oil-out is connected with the inlet P of electromagnetic relief valve, the inlet A and the 4th Pressure gauge of first check valve respectively, the outlet T of electromagnetic relief valve is connected with fuel tank, and the outlet B of first check valve is connected with the pressure hydraulic fluid port K1 of high pressure pumping source.
Described accumulator control device comprises first hydraulic control one-way valve, second hydraulic control one-way valve, stop valve, accumulator, second pressure switch, the 3rd pressure switch and the 3rd Pressure gauge; The inlet A of first hydraulic control one-way valve is connected with the pressure hydraulic fluid port K3 of accumulator control device, the outlet B of first hydraulic control one-way valve is connected with an end of outlet B, second pressure switch, the 3rd pressure switch, the 3rd Pressure gauge and the stop valve of second hydraulic control one-way valve respectively, and the other end of stop valve is connected with accumulator; The inlet A of second hydraulic control one-way valve is connected with the oil return opening K2 of accumulator control device; The control mouth X of first hydraulic control one-way valve, second hydraulic control one-way valve is connected with an actuator port of two different pilot valves respectively.Described pilot valve can be multi-form for two-bit triplet solenoid directional control valve, two four-way electromagnetic reversing valves or two-bit triplet electromagnetic switch seat valve etc., controlled the On/Off of first hydraulic control one-way valve, second hydraulic control one-way valve respectively by pilot valve.
Described shearing oil cylinder control device comprises first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve, and it has two kinds of connected modes.First kind of connected mode is: the inlet A of the 4th inserted valve is connected with the pressure hydraulic fluid port K4, the inlet A of the 3rd inserted valve that shear the oil cylinder control device respectively, the inlet A of first inserted valve is connected with the oil return opening K7, the inlet A of second inserted valve that shear the oil cylinder control device respectively, the outlet B of first inserted valve is connected with the outlet B of the 3rd inserted valve, the actuator port K6 of shearing oil cylinder control device respectively, and the outlet B of second inserted valve is connected with the outlet B of the 4th inserted valve, the actuator port K5 of shearing oil cylinder control device respectively; The control mouth X of first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve is connected with an actuator port of four different pilot valves respectively.Described pilot valve can be multi-form for two-bit triplet solenoid directional control valve, two four-way electromagnetic reversing valves or two-bit triplet electromagnetic switch seat valve etc., controlled the On/Off of first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve respectively by above-mentioned four pilot valves.Second kind of connected mode is: the inlet A of the 4th inserted valve is connected with the actuator port K5, the inlet A of the 3rd inserted valve that shear the oil cylinder control device respectively, the inlet A of first inserted valve is connected with the actuator port K6, the inlet A of second inserted valve that shear the oil cylinder control device respectively, the outlet B of first inserted valve is connected with the outlet B of the 3rd inserted valve, the oil return opening K7 of shearing oil cylinder control device respectively, and the outlet B of second inserted valve is connected with the outlet B of the 4th inserted valve, the pressure hydraulic fluid port K4 of shearing oil cylinder control device respectively; The control mouth X of first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve is connected with an actuator port of four different pilot valves respectively.Described pilot valve can be multi-form for two-bit triplet solenoid directional control valve, two four-way electromagnetic reversing valves or two-bit triplet electromagnetic switch seat valve etc., controlled the On/Off of first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve respectively by above-mentioned four pilot valves.
Described cutting edge is adjusted control device and is comprised second pressure-reducing valve, second Pressure gauge and 3-position 4-way solenoid directional control valve, the inlet B of second pressure-reducing valve is connected with the pressure hydraulic fluid port K11 that cutting edge is adjusted control device, the outlet A of second pressure-reducing valve is connected with the oil inlet P of second Pressure gauge and 3-position 4-way solenoid directional control valve respectively, and the drain tap of second pressure-reducing valve is connected with the oil return opening K10 that the oil return inlet T and the cutting edge of 3-position 4-way solenoid directional control valve are adjusted control device respectively; The actuator port A of 3-position 4-way solenoid directional control valve or B are connected with the actuator port K8 that cutting edge is adjusted control device, and another actuator port of 3-position 4-way solenoid directional control valve is connected with the actuator port K9 that cutting edge is adjusted control device.
Described pressure plate cylinder control device comprises first pressure-reducing valve, second check valve, the first two four-way electromagnetic reversing valves, overflow valve, first pressure switch and first Pressure gauge, the inlet B of first pressure-reducing valve is connected with the pressure hydraulic fluid port K14 of pressure plate cylinder control device, the outlet A of first pressure-reducing valve is connected with the inlet A of second check valve, the drain tap of first pressure-reducing valve respectively with the oil return inlet T of the first two four-way electromagnetic reversing valves, the outlet T of overflow valve and the oil return opening K15 of pressure plate cylinder control device are connected, and the outlet B of second check valve is connected with the oil inlet P of the first two four-way electromagnetic reversing valves; The actuator port A or the B one tunnel of first two four-way electromagnetic reversing valves are connected with the no bar side of pressure plate cylinder through first hydralic hose, and another road is connected with the inlet P of first Pressure gauge, first pressure switch and overflow valve respectively; Another actuator port of the first two four-way electromagnetic reversing valves is connected with the bar side that has of pressure plate cylinder through second hydralic hose.
Described shearing oil cylinder is become by F.F. that the worker advance to be by the state variation decision of first pressure switch.
The course of work of hydraulic drive circuit of the present utility model is as follows:
1, the working method of high pressure pumping source: motor drives hydraulic pump running, the inlet port of hydraulic pump oil suction in the fuel tank, from the oil-out of hydraulic pump fluid is discharged then.The electromagnetic relief valve of hydraulic pump oil-out be the working method of electric boost, when promptly the electromagnet 10DT of electromagnetic relief valve must not electricity, the pressure of hydraulic pump outlet was zero; When electromagnet 10DT gets when electric, the operating pressure of hydraulic pump outlet is determined by the set pressure (being the operating pressure of system) of electromagnetic relief valve.Its force value shows by the 4th Pressure gauge; The fluid of hydraulic pump outlet enters from the inlet A of first check valve, pushes the pressure hydraulic fluid port K1 that arrives the high pressure pumping source behind first check valve by its outlet B open.
2, the oil-filled control of accumulator: when the pressure in the accumulator is lower than the setting of second pressure switch, the microswitch J2 of second pressure switch separately, this moment, electromagnet 10DT got electricly, hydraulic pump begins in accumulator oil-filled; When the pressure in the accumulator is higher than the setting of the 3rd pressure switch, the microswitch J3 closure of the 3rd pressure switch, this moment electromagnet 10DT dead electricity, hydraulic pump outlet off-load stops in accumulator oil-filled.By the work characteristics of cutter as can be known, electromagnetic relief valve most of the time of hydraulic pump outlet all is to be in the dead electricity unloading condition, has reached purpose of energy saving.
3, the position adjustment of lower scissor blade: the 3-position 4-way solenoid directional control valve is mainly used to carry out the position adjustment of lower scissor blade.The latus rectum of 3-position 4-way solenoid directional control valve is less, and hydraulic oil reduces through the second decompression downstream pressure, and the action at a slow speed that can realize shearing oil cylinder can determine first near the switch and second position near switch according to the cutting edge action request thus easily.In addition, can adjust the cutting edge position easily according to the maintenance requirement.The energising of electromagnet 2DT and 3DT, the outage can realize shearing oil cylinder action at a slow speed, stop.
4, the switching process of inserted valve: when the control mouth X that controls this inserted valve when the pilot valve of inserted valve connect hydraulic oil, inserted valve was in closed condition; When the control mouth X that controls this inserted valve when the pilot valve of inserted valve takes back oil, if any one among two actuator port A of this inserted valve and the B connects hydraulic oil or pressure raises, the main valve plug of this inserted valve is pushed in the capital open, make two actuator port A of this inserted valve be communicated with B, inserted valve is in open mode.
5, the control of hydraulic control one-way valve: when the control mouth X that controls this hydraulic control one-way valve when the pilot valve of hydraulic control one-way valve connect hydraulic oil, hydraulic oil can two-wayly pass through hydraulic control one-way valve; When the control mouth X that controls this hydraulic control one-way valve when the pilot valve of hydraulic control one-way valve takes back oil, hydraulic oil can only flow into from the inlet A of hydraulic control one-way valve, flow out from the outlet B of hydraulic control one-way valve, and can not oppositely pass through hydraulic control one-way valve, promptly hydraulic control one-way valve is in reverse blocking state.
6, shear history: after waiting to cut the band steel and entering into clipped position, the operator triggers and shears instruction, and hydraulic drive circuit of the present utility model can be finished F.F., pressing plate, shearing worker automatically and advance, retreats and stop so complete course of action.
First kind of connected mode for shearing oil cylinder control device: at first, control that the 3rd inserted valve and the 4th inserted valve are opened, first hydraulic control one-way valve is in reverse blocking state, hydraulic oil enters from the actuator port A of the 3rd inserted valve, actuator port B and the 3rd hydralic hose by the 3rd inserted valve enters the no bar side of shearing oil cylinder successively, and shearing oil cylinder has bar side fluid to flow out under the promotion of piston.At this moment, the 3-position 4-way solenoid directional control valve is in meta, and its actuator port B is in cut-off state; Therefore, shearing oil cylinder has the fluid of bar side can only pass through actuator port B, the A of the 4th hydralic hose, the 4th inserted valve successively, actuator port A, the B of the 3rd inserted valve, and the 3rd hydralic hose flows into the no bar side of shearing oil cylinder, thereby the formation differential circuit realizes that the unloaded sky fast of shearing oil cylinder advances.Shear cylinder action and cross the Cheng Qian, the inlet A of first hydraulic control one-way valve is basic identical with the pressure of outlet B; When shearing cylinder action, the inlet A pressure of first hydraulic control one-way valve can reduce; Because first hydraulic control one-way valve is in reverse blocking state, so the hydraulic oil of its outlet B side can not flow to its inlet A side.Before address, first pressure-reducing valve inlet B is connected to hydraulic oil, hydraulic oil arrives the outlet A of first pressure-reducing valve and the inlet A of second check valve through reducing pressure after, push open behind second check valve by it and export the oil inlet P that B enters the first two four-way electromagnetic reversing valves; Since electromagnet 1DT not electric, so the oil inlet P of the first two four-way electromagnetic reversing valves is communicated with actuator port A, actuator port B is communicated with oil return inlet T; The no bar side that actuator port A, first hydralic hose of fluid by the first two four-way electromagnetic reversing valves enters pressure plate cylinder.Pressure plate cylinder the bar side is arranged through second hydralic hose, the actuator port B of the first two four-way electromagnetic reversing valves and the oil return opening K15 that oil return inlet T is connected to the pressure plate cylinder control device, therefore, pressure plate cylinder is in the state of stretching out before pressing plate.Along with shearing constantly stretching out of oil cylinder piston bar, pressure plate cylinder moves upward with lower scissor blade, and after the pressing plate for the treatment of the pressure plate cylinder piston rod end will be waited to cut the band steel and compress, the piston rod of shearing oil cylinder continued to stretch out; Pressure plate cylinder cylinder bucket continues to move upward, and the piston rod of pressure plate cylinder is withdrawn with respect to the cylinder bucket under external force, under the atmospheric pressure effect, fluid has a repairing of bar side through what oil return inlet T, actuator port B and second hydralic hose of the oil return opening K15 of pressure plate cylinder control device, the first two four-way electromagnetic reversing valves entered pressure plate cylinder.The fluid that pressure plate cylinder does not have the bar side flows out under the promotion of piston rod and since second check valve oppositely by effect, pressure plate cylinder does not have the fluid of bar side can only be by flowing back to fuel tank behind first hydralic hose, the overflow valve.At this moment, the pressure that pressure plate cylinder does not have the bar side is the setting pressure of overflow valve, is higher than the setting pressure of first pressure-reducing valve, and triggers the action of first pressure switch, its microswitch J1 adhesive.PLC thinks later on that at the signal of receiving the J1 adhesive shearing condition possesses, automatically send the shearing worker and advance instruction, controlling the 4th inserted valve closes, second inserted valve is opened, first hydraulic control one-way valve is opened, hydraulic oil in the accumulator can flow to its inlet A from the outlet B of first hydraulic control one-way valve, thereby pool together with the hydraulic oil that flows out from the pressure hydraulic fluid port K1 of high pressure pumping source, pass through the actuator port A of the 4th inserted valve more successively, the actuator port A of the 3rd inserted valve, B and the 3rd hydralic hose enter the no bar side of shearing oil cylinder, promoting piston rod continues to stretch out, piston rod has bar side fluid to flow out under the promotion of piston rod, through arriving the actuator port B of second inserted valve behind the 4th hydralic hose, back down the main valve plug of second inserted valve, flow out from the actuator port A of second inserted valve, and finally flow back to fuel tank.There is the pressure of bar side very low because shear oil cylinder this moment, so it is very big to shear the power of oil cylinder output; Because advancing to be discharged in the process the shearing worker, the hydraulic oil in the middle of the accumulator shears the no bar side of oil cylinder again, thus also guaranteed higher shear rate, thus guarantee finishing smoothly of shear action.When the moving-member that is consolidated with frame is triggered to second during near switch, second sends a signal to PLC near switch, PLC thinks and steel plate is cut off, and send the shearing oil cylinder automatically and return instruction, control that the 3rd inserted valve and second inserted valve are closed, first inserted valve and the 4th inserted valve is opened, first hydraulic control one-way valve oppositely ends, at this moment, fluid can not flow to its inlet A from the outlet B of first hydraulic control one-way valve.In addition, because the 4th inserted valve is opened, hydraulic oil flow through enter behind actuator port A, the B of the 4th inserted valve and the 4th hydralic hose shear oil cylinder the bar side arranged, it is descending to promote piston rod withdrawal drive lower scissor blade, shearing oil cylinder rodless side fluid flows out under the promotion of piston rod, enter the actuator port B of first inserted valve through the 3rd hydralic hose, and push the main valve plug of first inserted valve open, also finally flow back to fuel tank from the actuator port A outflow of first inserted valve.At this moment, the cylinder bucket of pressure plate cylinder moves down with lower scissor blade, and its piston rod stretches out with respect to the cylinder bucket under the effect of no bar side oil pressure, until stretching out fully.When the moving-member that is consolidated with frame is triggered to first during near switch, first sends a signal to PLC near switch, PLC thinks and finishes a complete shear action, send the shearing halt instruction, control first inserted valve and the 4th inserted valve is closed, shear the oil cylinder stop motion, wait for next arrival of shearing instruction.
The course of work for second kind of connected mode shearing the oil cylinder control device, only be control procedure with the difference of first kind of connected mode shearing the oil cylinder control device to four inserted valves, after the operator triggers the shearing instruction, at first control second inserted valve, the 4th inserted valve is opened, form differential circuit, realize that the unloaded sky fast of shearing oil cylinder advances; After pressure plate cylinder will be waited to cut band steel compress, by control second inserted valve, the 3rd inserted valve is opened to finish and is treated the shearing of cutting the band steel; After judging that wait to cut the band steel is cut off, control first inserted valve, the 4th inserted valve is opened, and realizes shearing returning of oil cylinder.
The beneficial effects of the utility model:
Hydraulic cutter of the present utility model loop is compared with existing shear loop has following advantage:
1, the utility model can realize easily that unloaded F.F., THE ADIABATIC SHEAR IN worker advance, and under the condition of identical accumulator volume and high pressure pumping source power consumption, can effectively improve the shear ability of hydraulic shearing machine;
2, the utility model has taken into full account the service intermittent characteristics of hydraulic shearing machine, and under the state, the hydraulic pump outlet is in unloading condition, reaches purpose of energy saving usually;
3, the utility model can be realized the automatic liquid feeding of accumulator, the automaticity height.
Description of drawings:
Fig. 1 is the structural representation of existing slide crank block structured cutter;
Fig. 2 is the hydraulic schematic diagram that shearing oil cylinder control device of the present utility model adopts first kind of connected mode;
Fig. 3 is the hydraulic schematic diagram that shearing oil cylinder control device of the present utility model adopts second kind of connected mode;
Fig. 4 is that shearing oil cylinder control device of the present utility model adopts first kind of connected mode, is the hydraulic schematic diagram of the embodiment of pilot valve with the two-position four-way solenoid directional control valve;
Fig. 5 is that shearing oil cylinder control device of the present utility model adopts second kind of connected mode, is the hydraulic schematic diagram of the embodiment of pilot valve with the two-position four-way solenoid directional control valve;
Among the figure: the 1-fuel tank, the 2-motor, the 3-hydraulic pump, the 4-electromagnetic relief valve, 5-the 4th Pressure gauge, 6-first check valve, 7-second hydraulic control one-way valve, 8-the 3rd Pressure gauge, 9-the 3rd pressure switch, 10-second pressure switch, the 11-stop valve, the 12-accumulator, 13-first hydraulic control one-way valve, 14-the 4th inserted valve, 15-second inserted valve, 16-the 3rd inserted valve, 17-the 4th hydralic hose, 18-shears oil cylinder, 19-the 3rd hydralic hose, 20-first inserted valve, 21-second pressure-reducing valve, 22-3-position 4-way solenoid directional control valve, 23-second Pressure gauge, 24-first pressure-reducing valve, 25-second hydralic hose, 26-first hydralic hose, the 27-pressure plate cylinder, 28-first Pressure gauge, 29-first pressure switch, the first two four-way electromagnetic reversing valves of 30-, 31-second check valve, the 32-overflow valve, 33-lower link, the last connecting rod of 34-, the 35-frame, the 36-lower scissor blade, 37-piston rod, 38-wait to cut the band steel, the 39-upper scissor blade, the 40-push rod, the 7 two four-way electromagnetic reversing valve of 41-, the 6 two four-way electromagnetic reversing valve of 42-, the 5 two four-way electromagnetic reversing valve of 43-, 44-the 4th control cover plate, the 3 two four-way electromagnetic reversing valve of 45-, the 46-second control cover plate, the 4 two four-way electromagnetic reversing valve of 47-, 48-the 3rd control cover plate, the second two four-way electromagnetic reversing valves of 49-, the 50-first control cover plate, 51-second is near switch, 52-first is near switch, and x-controls the control mouth of cover plate, the oil return opening of y-control cover plate, the electromagnet code name of 1DT～9DT-solenoid directional control valve, the electromagnet code name of 10DT-electromagnetic relief valve, the electrical node code name of J1～J3-pressure switch, I-high pressure pumping source, II-accumulator control device, III-shears the oil cylinder control device, and the IV-cutting edge is adjusted control device, V-pressure plate cylinder control device, the pressure hydraulic fluid port of K1-high pressure pumping source, the oil return opening of K2-accumulator control device, the pressure hydraulic fluid port of K3-accumulator control device, K4-shears the pressure hydraulic fluid port of oil cylinder control device, K5, K6-shears the actuator port of oil cylinder control device, K7-shears the oil return opening of oil cylinder control device, K8, the K9-cutting edge is adjusted the actuator port of control device, and the K10-cutting edge is adjusted the oil return opening of control device, the K11-cutting edge is adjusted the pressure hydraulic fluid port of control device, K12, the actuator port of K13-pressure plate cylinder control device, the pressure hydraulic fluid port of K14-pressure plate cylinder control device, the oil return opening of K15-pressure plate cylinder control device.
The specific embodiment:
Embodiment 1:
Is example with two four-way electromagnetic reversing valves as the pilot valve of inserted valve and hydraulic control one-way valve, its hydraulic principle as shown in Figure 4,
A kind of hydraulic transmission loop of diagonal cutter shearing machine comprises high pressure pumping source I, accumulator control device II, shears oil cylinder control device III, cutting edge adjustment control device IV and pressure plate cylinder control device V.The pressure hydraulic fluid port K1 of high pressure pumping source I adjusts the pressure hydraulic fluid port K11 of control device IV with the pressure hydraulic fluid port K3 of accumulator control device II, the pressure hydraulic fluid port K4 that shears oil cylinder control device III, cutting edge respectively and the pressure hydraulic fluid port K14 of pressure plate cylinder control device V is connected; The oil return opening K2 of accumulator control device II, the oil return opening K7 that shears oil cylinder control device III, cutting edge adjust the oil return opening K10 of control device IV and the oil return opening K15 of pressure plate cylinder control device V is connected with fuel tank 1; The actuator port K6 that shears oil cylinder control device III is connected with the no bar side of shearing oil cylinder 18 by the 3rd hydralic hose 19, and the actuator port K5 that shears oil cylinder control device III is connected with the bar side that has of shearing oil cylinder 18 by the 4th hydralic hose 17; The actuator port K9 that cutting edge is adjusted control device IV is connected with the no bar side of shearing oil cylinder 18 by the 3rd hydralic hose 19, and the actuator port K8 that cutting edge is adjusted control device IV is connected with the bar side that has of shearing oil cylinder 18 by the 4th hydralic hose 17; The actuator port K13 of pressure plate cylinder control device V is connected with the no bar side of pressure plate cylinder 27 by first hydralic hose 26, and the actuator port K12 of pressure plate cylinder control device V is connected with the bar side that has of pressure plate cylinder 27 by second hydralic hose 25.
Described high pressure pumping source I comprises first check valve 6, fuel tank 1, electromagnetic relief valve 4, the 4th Pressure gauge 5, hydraulic pump 3 and is attached thereto the motor 2 that connects by shaft coupling.The inlet port of hydraulic pump 3 is connected with fuel tank 1, oil-out is connected with the inlet P of electromagnetic relief valve 4, the inlet A and the 4th Pressure gauge 5 of first check valve 6 respectively, the outlet T of electromagnetic relief valve 4 is connected with fuel tank 1, and the outlet B of first check valve 6 is connected with the pressure hydraulic fluid port K1 of high pressure pumping source I.
Described accumulator control device II comprises first hydraulic control one-way valve 13, second hydraulic control one-way valve 7, stop valve 11, accumulator 12, second pressure switch 10, the 3rd pressure switch 9, the 3rd Pressure gauge the 8, the 6 two four-way electromagnetic reversing valve 42 and the 7 two four-way electromagnetic reversing valve 41.The 6 two four-way electromagnetic reversing valve 42 is as the pilot valve of first hydraulic control one-way valve 13, the 7 two four-way electromagnetic reversing valve 41 is as the pilot valve of second hydraulic control one-way valve 7, the inlet A of first hydraulic control one-way valve 13 is connected with the pressure hydraulic fluid port K3 of accumulator control device II, the outlet B of first hydraulic control one-way valve 13 respectively with the outlet B of second hydraulic control one-way valve 7, second pressure switch 10, the 3rd pressure switch 9, one end of the 3rd Pressure gauge 8 and stop valve 11 is connected, the other end of stop valve 11 is connected with accumulator 12, and the inlet A of second hydraulic control one-way valve 7 is connected with the oil return opening K2 of accumulator control device II; The control mouth X of second hydraulic control one-way valve 7 is connected with the actuator port A of the 7 two four-way electromagnetic reversing valve 41, the oil return inlet T of the 7 two four-way electromagnetic reversing valve 41 is connected with the oil return inlet T of the oil return inlet T of the 5 two four-way electromagnetic reversing valve 43, the oil return inlet T of the 6 two four-way electromagnetic reversing valve 42, the 3 two four-way electromagnetic reversing valve 45 and the actuator port A of second inserted valve 15 respectively, and the oil inlet P of the 7 two four-way electromagnetic reversing valve 41 is connected with the outlet B of second hydraulic control one-way valve 7; The oil inlet P of the 6 two four-way electromagnetic reversing valve 42 is connected with the outlet B of first hydraulic control one-way valve 13, and the actuator port B of the 6 two four-way electromagnetic reversing valve 42 is connected with the control mouth X of first hydraulic control one-way valve 13.
Described shearing oil cylinder control device III comprises first inserted valve 20, second inserted valve 15, the 3rd inserted valve 16, the 4th inserted valve 14, the second two the 49, the 3 two four-way electromagnetic reversing valves of four-way electromagnetic reversing valve the 45, the 4 two four-way electromagnetic reversing valve 47 and the 5 two four-way electromagnetic reversing valves 43; The second two four-way electromagnetic reversing valve the 45, the 4 two four-way electromagnetic reversing valves 47 of the 49, the 3 two four-way electromagnetic reversing valve and the 5 two four-way electromagnetic reversing valve 43 are respectively as the pilot valve of first inserted valve 20, second inserted valve 15, the 3rd inserted valve 16 and the 4th inserted valve 14.The inlet A of the 4th inserted valve 14 is connected with the pressure hydraulic fluid port K4, the inlet A of the 3rd inserted valve 16 that shear oil cylinder control device III respectively, the inlet A of first inserted valve 20 is connected with the oil return opening K7, the inlet A of second inserted valve 15 that shear oil cylinder control device III respectively, the outlet B of first inserted valve 20 is connected with the outlet B of the 3rd inserted valve 16, the actuator port K6 of shearing oil cylinder control device III respectively, and the outlet B of second inserted valve 15 is connected with the outlet B of the 4th inserted valve 14, the actuator port K5 of shearing oil cylinder control device III respectively; The second two four-way electromagnetic reversing valves 49, the 3 two four-way electromagnetic reversing valve 45, the actuator port A of the 4 two four-way electromagnetic reversing valve 47 and the 5 two four-way electromagnetic reversing valve 43 respectively with first inserted valve 20, second inserted valve 15, the control mouth X of the 3rd inserted valve 16 and the 4th inserted valve 14 is connected, the oil inlet P of the second two four-way electromagnetic reversing valves 49 and the 4 two four-way electromagnetic reversing valve 47 all is connected (promptly being communicated with hydraulic oil) with the actuator port A of the 3rd inserted valve 16, the oil return inlet T of the second two four-way electromagnetic reversing valves 49 and the 4 two four-way electromagnetic reversing valve 47 all be connected with the actuator port A of first inserted valve 20 (promptly being communicated with oil return).
Described cutting edge is adjusted control device IV and is comprised second pressure-reducing valve 21, second Pressure gauge 23 and 3-position 4-way solenoid directional control valve 22.The inlet B of second pressure-reducing valve 21 is connected with the pressure hydraulic fluid port K11 that cutting edge is adjusted control device IV, the outlet A of second pressure-reducing valve 21 is connected with the oil inlet P of second Pressure gauge 23 and 3-position 4-way solenoid directional control valve 22 respectively, the drain tap of second pressure-reducing valve 21 is connected with the oil return opening K10 that the oil return inlet T and the cutting edge of 3-position 4-way solenoid directional control valve 22 are adjusted control device IV respectively, the actuator port A of 3-position 4-way solenoid directional control valve 22 is connected with the actuator port K9 that cutting edge is adjusted control device IV, and the actuator port B of 3-position 4-way solenoid directional control valve 22 is connected with the actuator port K8 that cutting edge is adjusted control device IV.
Described pressure plate cylinder control device V comprises first pressure-reducing valve 24, second check valve 31, the first two four-way electromagnetic reversing valves 30, overflow valve 32, first pressure switch 29 and first Pressure gauges 28.The inlet B of first pressure-reducing valve 24 is connected with the pressure hydraulic fluid port K14 of pressure plate cylinder control device V, the outlet A of first pressure-reducing valve 24 is connected with the inlet A of second check valve 31, the drain tap of first pressure-reducing valve 24 is connected with oil return inlet T, the outlet T of overflow valve 32 and the oil return opening K15 of pressure plate cylinder control device V of the first two four-way electromagnetic reversing valves 30 respectively, and the outlet B of second check valve 31 is connected with the oil inlet P of the first two four-way electromagnetic reversing valves 30; The actuator port B of the first two four-way electromagnetic reversing valves 30 is connected with the bar side that has of pressure plate cylinder 27 through second hydralic hose 25, the actuator port A one tunnel of the first two four-way electromagnetic reversing valves 30 is connected with the no bar side of pressure plate cylinder 27 through first hydralic hose 26, and another road is connected with the inlet P of first Pressure gauge 28, first pressure switch 29 and overflow valve 32 respectively.
Embodiment 2:
Is example with two four-way electromagnetic reversing valves as the pilot valve of inserted valve and hydraulic control one-way valve, its hydraulic principle as shown in Figure 5,
The structure composition of the high pressure pumping source I of present embodiment, accumulator control device II, cutting edge adjustment control device IV and pressure plate cylinder control device V and the course of work thereof and embodiment 1 are identical, and difference from Example 1 mainly is to shear the connected mode of oil cylinder control device III.
Its connected mode is: the inlet A of the 4th inserted valve 14 respectively with the actuator port K5 that shears oil cylinder control device III, the inlet A of the 3rd inserted valve 16 is connected, the inlet A of first inserted valve 20 respectively with the actuator port K6 that shears oil cylinder control device III, the inlet A of second inserted valve 15 is connected, the outlet B of first inserted valve 20 respectively with the outlet B of the 3rd inserted valve 16, the oil return opening K7 that shears oil cylinder control device III is connected, the outlet B of second inserted valve 15 respectively with the outlet B of the 4th inserted valve 14, the pressure hydraulic fluid port K4 that shears oil cylinder control device III is connected, the second two four-way electromagnetic reversing valves 49, the 3 two four-way electromagnetic reversing valve 45, the actuator port A of the 4 two four-way electromagnetic reversing valve 47 and the 5 two four-way electromagnetic reversing valve 43 respectively with first inserted valve 20, second inserted valve 15, the control mouth X of the 3rd inserted valve 16 and the 4th inserted valve 14 is connected, the second two four-way electromagnetic reversing valves 49, the 3 two four-way electromagnetic reversing valve 45, the oil inlet P of the 4 two four-way electromagnetic reversing valve 47 and the 5 two four-way electromagnetic reversing valve 43 all is connected (promptly being communicated with hydraulic oil) with the pressure hydraulic fluid port K4 that shears oil cylinder control device III, the second two four-way electromagnetic reversing valves 49, the 3 two four-way electromagnetic reversing valve 45, the oil return inlet T of the 4 two four-way electromagnetic reversing valve 47 and the 5 two four-way electromagnetic reversing valve 43 all be connected (promptly being communicated with oil return) with the oil return opening K7 that shears oil cylinder control device III.
Claims (8)
1. a hydraulic transmission loop of diagonal cutter shearing machine is characterized in that comprising high pressure pumping source, accumulator control device, shearing oil cylinder control device, cutting edge adjustment control device and pressure plate cylinder control device; The pressure hydraulic fluid port K1 of high pressure pumping source adjusts the pressure hydraulic fluid port K11 of control device with the pressure hydraulic fluid port K3 of accumulator control device, the pressure hydraulic fluid port K4 that shears the oil cylinder control device, cutting edge respectively and the pressure hydraulic fluid port K14 of pressure plate cylinder control device is connected; The oil return opening K2 of accumulator control device, the oil return opening K7 that shears the oil cylinder control device, cutting edge adjust the oil return opening K10 of control device and the oil return opening K15 of pressure plate cylinder control device is connected with fuel tank; The actuator port K6 that shears the oil cylinder control device is connected with the no bar side of shearing oil cylinder by the 3rd hydralic hose, and the actuator port K5 that shears the oil cylinder control device is connected with the bar side that has of shearing oil cylinder by the 4th hydralic hose; The actuator port K9 that cutting edge is adjusted control device is connected with the no bar side of shearing oil cylinder by the 3rd hydralic hose, and the actuator port K8 that cutting edge is adjusted control device is connected with the bar side that has of shearing oil cylinder by the 4th hydralic hose; The actuator port K13 of pressure plate cylinder control device is connected with the no bar side of pressure plate cylinder by first hydralic hose, and the actuator port K12 of pressure plate cylinder control device is connected with the bar side that has of pressure plate cylinder by second hydralic hose.
2. a kind of hydraulic transmission loop of diagonal cutter shearing machine according to claim 1 is characterized in that described high pressure pumping source comprises first check valve, fuel tank, electromagnetic relief valve, the 4th Pressure gauge, hydraulic pump and is attached thereto the motor that connects by shaft coupling; The inlet port of hydraulic pump is connected with fuel tank, oil-out is connected with the inlet P of electromagnetic relief valve, the inlet A and the 4th Pressure gauge of first check valve respectively, the outlet T of electromagnetic relief valve is connected with fuel tank, and the outlet B of first check valve is connected with the pressure hydraulic fluid port K1 of high pressure pumping source.
3. a kind of hydraulic transmission loop of diagonal cutter shearing machine according to claim 1 is characterized in that described accumulator control device comprises first hydraulic control one-way valve, second hydraulic control one-way valve, stop valve, accumulator, second pressure switch, the 3rd pressure switch and the 3rd Pressure gauge; The inlet A of first hydraulic control one-way valve is connected with the pressure hydraulic fluid port K3 of accumulator control device, the outlet B of first hydraulic control one-way valve is connected with an end of outlet B, second pressure switch, the 3rd pressure switch, the 3rd Pressure gauge and the stop valve of second hydraulic control one-way valve respectively, and the other end of stop valve is connected with accumulator; The inlet A of second hydraulic control one-way valve is connected with the oil return opening K2 of accumulator control device; The control mouth X of first hydraulic control one-way valve, second hydraulic control one-way valve is connected with an actuator port of two different pilot valves respectively.
4. a kind of hydraulic transmission loop of diagonal cutter shearing machine according to claim 1, it is characterized in that described shearing oil cylinder control device comprises first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve, the inlet A of the 4th inserted valve respectively with the pressure hydraulic fluid port K4 that shears the oil cylinder control device, the inlet A of the 3rd inserted valve is connected, the inlet A of first inserted valve respectively with the oil return opening K7 that shears the oil cylinder control device, the inlet A of second inserted valve is connected, the outlet B of first inserted valve respectively with the outlet B of the 3rd inserted valve, the actuator port K6 that shears the oil cylinder control device is connected, the outlet B of second inserted valve respectively with the outlet B of the 4th inserted valve, the actuator port K5 that shears the oil cylinder control device is connected; The control mouth X of first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve is connected with an actuator port of four different pilot valves respectively.
5. a kind of hydraulic transmission loop of diagonal cutter shearing machine according to claim 1, it is characterized in that described shearing oil cylinder control device comprises first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve, the inlet A of the 4th inserted valve respectively with the actuator port K5 that shears the oil cylinder control device, the inlet A of the 3rd inserted valve is connected, the inlet A of first inserted valve respectively with the actuator port K6 that shears the oil cylinder control device, the inlet A of second inserted valve is connected, the outlet B of first inserted valve respectively with the outlet B of the 3rd inserted valve, the oil return opening K7 that shears the oil cylinder control device is connected, the outlet B of second inserted valve respectively with the outlet B of the 4th inserted valve, the pressure hydraulic fluid port K4 that shears the oil cylinder control device is connected; The control mouth X of first inserted valve, second inserted valve, the 3rd inserted valve and the 4th inserted valve is connected with an actuator port of four different pilot valves respectively.
6. a kind of hydraulic transmission loop of diagonal cutter shearing machine according to claim 1, it is characterized in that described cutting edge adjustment control device comprises second pressure-reducing valve, second Pressure gauge and 3-position 4-way solenoid directional control valve, the inlet B of second pressure-reducing valve is connected with the pressure hydraulic fluid port K11 that cutting edge is adjusted control device, the outlet A of second pressure-reducing valve is connected with the oil inlet P of second Pressure gauge and 3-position 4-way solenoid directional control valve respectively, and the drain tap of second pressure-reducing valve is connected with the oil return opening K10 that the oil return inlet T and the cutting edge of 3-position 4-way solenoid directional control valve are adjusted control device respectively; The actuator port A of 3-position 4-way solenoid directional control valve or B are connected with the actuator port K8 that cutting edge is adjusted control device, and another actuator port of 3-position 4-way solenoid directional control valve is connected with the actuator port K9 that cutting edge is adjusted control device.
7. a kind of hydraulic transmission loop of diagonal cutter shearing machine according to claim 1, it is characterized in that described pressure plate cylinder control device comprises first pressure-reducing valve, second check valve, the first two four-way electromagnetic reversing valves, overflow valve, first pressure switch and first Pressure gauge, the inlet B of first pressure-reducing valve is connected with the pressure hydraulic fluid port K14 of pressure plate cylinder control device, the outlet A of first pressure-reducing valve is connected with the inlet A of second check valve, the drain tap of first pressure-reducing valve respectively with the oil return inlet T of the first two four-way electromagnetic reversing valves, the outlet T of overflow valve and the oil return opening K15 of pressure plate cylinder control device are connected, and the outlet B of second check valve is connected with the oil inlet P of the first two four-way electromagnetic reversing valves; The actuator port A or the B one tunnel of first two four-way electromagnetic reversing valves are connected with the no bar side of pressure plate cylinder through first hydralic hose, and another road is connected with the inlet P of first Pressure gauge, first pressure switch and overflow valve respectively; Another actuator port of the first two four-way electromagnetic reversing valves is connected with the bar side that has of pressure plate cylinder through second hydralic hose.
8. a kind of hydraulic transmission loop of diagonal cutter shearing machine according to claim 1 is characterized in that described shearing oil cylinder is become by F.F. that the worker advance to be by the state variation decision of first pressure switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200102464U CN201592286U (en) | 2010-01-14 | 2010-01-14 | Hydraulic drive circuit of inclined throat shear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200102464U CN201592286U (en) | 2010-01-14 | 2010-01-14 | Hydraulic drive circuit of inclined throat shear |
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| CN201592286U true CN201592286U (en) | 2010-09-29 |
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| CN2010200102464U Expired - Fee Related CN201592286U (en) | 2010-01-14 | 2010-01-14 | Hydraulic drive circuit of inclined throat shear |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774042B (en) * | 2010-01-14 | 2012-07-18 | 东北大学 | Hydraulic transmission loop of diagonal cutter shearing machine |
| CN104929171A (en) * | 2015-05-27 | 2015-09-23 | 徐工集团工程机械股份有限公司科技分公司 | High-position discharging lifting moving arm energy-saving control system |
| CN107186264A (en) * | 2017-06-27 | 2017-09-22 | 中冶赛迪装备有限公司 | A kind of hydraulic system of hydraulic shear |
| CN107906069A (en) * | 2017-12-12 | 2018-04-13 | 南京钢铁股份有限公司 | Circumference combines high-quality special steel new small billet withdrawal straightening machine hydraulic valve platform and control method |
| CN109210022A (en) * | 2018-10-26 | 2019-01-15 | 广州宝力特液压密封有限公司 | A kind of hydraulic system for lid maker |
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2010
- 2010-01-14 CN CN2010200102464U patent/CN201592286U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774042B (en) * | 2010-01-14 | 2012-07-18 | 东北大学 | Hydraulic transmission loop of diagonal cutter shearing machine |
| CN104929171A (en) * | 2015-05-27 | 2015-09-23 | 徐工集团工程机械股份有限公司科技分公司 | High-position discharging lifting moving arm energy-saving control system |
| CN107186264A (en) * | 2017-06-27 | 2017-09-22 | 中冶赛迪装备有限公司 | A kind of hydraulic system of hydraulic shear |
| CN107906069A (en) * | 2017-12-12 | 2018-04-13 | 南京钢铁股份有限公司 | Circumference combines high-quality special steel new small billet withdrawal straightening machine hydraulic valve platform and control method |
| CN107906069B (en) * | 2017-12-12 | 2024-01-09 | 南京钢铁股份有限公司 | Hydraulic valve table of square and round combined small square billet withdrawal and straightening machine and control method |
| CN109210022A (en) * | 2018-10-26 | 2019-01-15 | 广州宝力特液压密封有限公司 | A kind of hydraulic system for lid maker |
| CN109210022B (en) * | 2018-10-26 | 2024-03-08 | 广州宝力特液压技术有限公司 | Hydraulic system for cover making machine |
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