CN207128305U - Hydraulic press with compound cushion cylinder - Google Patents

Abstract

It the utility model is related to a kind of hydraulic press of the compound cushion cylinder of band, including left and right pillar and entablature, the center of entablature is provided with plunger case, master cylinder is installed at left and right sides of plunger case, the piston of master cylinder and plunger case is connected with sliding block, the left and right ends of entablature are symmetrically installed with compound cushion cylinder, the upper end open of cushion cylinder cylinder body, cushion cylinder piston is provided with the inner chamber of cushion cylinder cylinder body, the center of cushion cylinder piston is connected with the cushion cylinder piston rod extended downwardly, the lower end of cushion cylinder piston rod is stretched out from the center of cushion cylinder bottom, the lower end of cushion cylinder piston rod is connected with cylinder buffer block；The slide block buffers block stretched out laterally is symmetrically connected with left and right sides of sliding block, slide block buffers block is set in the bottom of cushion cylinder piston rod and positioned at the top of cylinder buffer block.Pooling feature can be achieved in the compound cushion cylinder of the hydraulic press, and and can participates in the quick return action of sliding block when not needing pooling feature.

Description

Hydraulic press with compound cushion cylinder

Technical field

A kind of hydraulic press is the utility model is related to, the hydraulic press of more particularly to a kind of compound cushion cylinder of band, belongs to liquid Press machine tool technology field.

Background technology

When carrying out the processes such as blanking, punching, trimming, due to Materials Fracture, resistance of deformation reduces hydraulic press suddenly, often Cause sizable impact shock, or even cause parts to damage.It is descending with sliding block during trimming, trimming punch with Workpiece starts to contact, if sliding block continues to decline, with flash relative motion shearing will occur for workpiece, until Materials Fracture, trimming power Steeply rise, be about equal in stroke at the 2/3 of flash thickness, trimming power reaches maximum, then in shorter impulse stroke Drastically decline again, until being zero.In order in Materials Fracture, make hydraulic press to lose load suddenly, generally in material bottom or cunning Buffer unit is installed in block both sides, when impulse stroke is slightly above material thickness 2/3, to increase the resistance of sliding block decline, hydraulic press is existed Load will not be lost during Materials Fracture suddenly, thus reduces impact shock.

Sidesway platform hydraulic press will be generally put on entablature due to being limited by effective table top and sidesway platform on cushion dashpot, bag Include two sets of independent buffering adjusting parts, the regulation of cushion stroke must two synchronizations and position it is accurate, each buffering regulation is logical Realized frequently with motor driving reductor in conjunction with screw rod swivel nut.The piston rod of cushion dashpot follows sliding block to move up and down, sliding When block pressure H enters buffer position, buffer cylinder piston rod and adjusting screw rod is in contact, produce cushioning effect.

Generally in the case where pump output flow is constant, reverberation matrix method contradicts again with opening speed, to realize big Opening speed then needs to reduce reverberation matrix method soon.With the aggravation of industry competition, user proposes more to the operating efficiency of hydraulic press Carry out higher requirement, the compression of production cost is realized by the lifting of efficiency, this requires the lathe speed of service to be lifted.

In usual lathe running, work is entered is with the power of motor of backhaul demands maximum, existing common practice： During work is entered, using the combination by piston cylinder and plunger case, using tonnage switch technology, realize that lathe worker enters stage speed Change from fast to slow, so as to realize that lathe worker enters the improved efficiency in stage.It is but existing in the improved efficiency in sliding block backhaul stage The way of technology is to balance part sliding block and mold weight power using pneumatic linear actuator or hydraulic cylinder balancing technique to realize, to reduce The tonnage of kicker cylinder, so as to realize that lathe sliding block in the case where installed capacity power is constant, obtains faster opening speed, with Realize that quick return improves hydraulic press operating efficiency.It is existing to be disadvantageous in that：1. in order to realize that quick return improves efficiency Reduce reverberation matrix method so that the mould that lathe uses has limitation；2. whether using pooling feature, damper piston bar is all with cunning Block moves, and loses part reverberation matrix method；3. entablature space is limited, cause layout difficult；4. accumulation of energy and servo-pump control are not used Technology, cause the waste of the energy.

Utility model content

The purpose of this utility model is, overcomes problems of the prior art, there is provided a kind of with compound buffering oil The hydraulic press of cylinder, you can realize pooling feature, and can participates in the quick return action of sliding block when not needing pooling feature.

To solve above technical problem, a kind of hydraulic press of the compound cushion cylinder of band of the present utility model, including left and right Column and the entablature being connected between left and right pillar top, the center of the entablature are provided with plunger case, the plunger case The left and right sides be symmetrically installed with master cylinder, the lower end of master cylinder piston and plunger case piston is fixedly connected with a slide block, the upper horizontal stroke The left and right ends of beam are symmetrically installed with compound cushion cylinder, and the compound cushion cylinder includes the cushion cylinder of upper end open Cylinder body, cushion cylinder piston is provided with the inner chamber of the cushion cylinder cylinder body, and the center connection of the cushion cylinder piston is oriented The cushion cylinder piston rod of lower extension, the lower end of the cushion cylinder piston rod is stretched out from the center of cushion cylinder bottom, described The lower end of cushion cylinder piston rod is connected with cylinder buffer block；It is symmetrically connected with left and right sides of the sliding block and stretches out laterally Slide block buffers block, the slide block buffers block is set in the bottom of the cushion cylinder piston rod and is located at the oil The top of cylinder buffer stopper.

Relative to prior art, the utility model achieves following beneficial effect：Compound cushion cylinder installs entablature On, cushion cylinder piston rod does not follow sliding block to act, and alleviates the weight to be moved up and down with sliding block；When under sliding block is fast, sliding block delays Block empty set is rushed to slide on cushion cylinder piston rod, when sliding block pressure H enters buffer position, the contact of slide block buffers block To cylinder buffer block, compound cushion cylinder now plays cushioning effect.During sliding block backhaul, pressure oil enters compound buffering oil The cavity of resorption of cylinder, cushion cylinder piston upwards, cushion cylinder piston rod hold up the sliding block of sliding block by cylinder buffer block upwards Buffer block, the weight of sliding block and mould is balanced, mitigate the load of backhaul, improve reverberation matrix method.

As improvement of the present utility model, the plunger case includes the plunger cylinder of upper end closed, and the plunger case is lived Plug is plugged in the inner chamber of the plunger cylinder, and plunger case epicoele hydraulic fluid port and post are respectively equipped with the top of the plunger cylinder Plug cylinder topping up interface, the lower circumference of the plunger cylinder are provided with axle of the plunger case cavity of resorption hydraulic fluid port along the plunger case piston Line is provided with the plunger case piston center hole extended from top to bottom, and small oil tank, the small oil are plugged with plunger case piston center hole The top of cylinder is stretched out from the roof centre bore of the plunger cylinder and is fixed on the plunger by small oil tank locking nut Realized respectively by seal on cylinder cylinder body, between the small oil tank and the plunger cylinder and plunger case piston center hole close Envelope, the small oil tank centre bore of insertion is provided with along the axis of the small oil tank；The plunger case topping up interface and the master cylinder fill Liquid mouth is connected by replenishing valve D0 with fuel tank respectively.It embedded in a small oil tank in plunger case piston, pressure oil is from small oil tank Centre bore enters in plunger case piston center hole, deadweight of the fast lower action of sliding block without relying on sliding block can be promoted, due to small The capacity of oil cylinder is small, and the hydraulic oil of same volume enables to small oil tank to promote the bigger stroke of plunger case piston-advance so that Faster, the operational efficiency of lathe is higher for speed when under sliding block is fast, while has the advantages of energy-conservation, low noise.

As further improvement of the utility model, the upper port of the cushion cylinder cylinder body is evenly distributed with cushion block, institute The top for stating cushion block is provided with cushion cylinder top cover, and the periphery of the cushion cylinder top cover is provided with the shirt rim extended downwardly, and screw is certainly It is upper and under through the screw of cushion cylinder top cover and the cushion block and be screwed in the upper port of the cushion cylinder cylinder body；It is described slow The lower end for rushing cylinder block is provided with cushion cylinder flange, and the cushion cylinder flange is resisted against the lower surface of the entablature, institute The upper end for stating cushion cylinder cylinder body is connected with cushion cylinder locknut, and the cushion cylinder locknut is pressed in the upper end of the entablature Face.Cushion cylinder flange and cushion cylinder locknut make compound cushion cylinder be positioned on entablature, and cushion block to buffer Oil cylinder top cover leaves the segment distance of upper port one of cushion cylinder cylinder body, is easy to the air above piston to discharge；Cushion cylinder top cover And its shirt rim covers in the upper port of cushion cylinder cylinder body, prevents foreign matter from entering.

As further improvement of the utility model, first gear pump P1 outlet is inserted by the first check valve D1 and first Dress valve C1 entrance is connected, and the first inserted valve C1 outlet passes through the second check valve D2 and the second inserted valve C2 and the 3rd inserted valve C3 entrance is connected, and the second inserted valve C2 outlet connected tank, the 3rd inserted valve C3 outlet passes through left pressure oil circuit G1 and position It is connected in the cavity of resorption of the compound cushion cylinder in left side；First inserted valve C1 hydraulic control mouth and the 4th solenoid directional control valve YV4 A mouths It is connected, the 4th solenoid directional control valve YV4 P mouths are connected with the first inserted valve C1 entrance, and the 4th solenoid directional control valve YV4 T mouths connect Fuel tank；Second inserted valve C2 hydraulic control mouth is connected with the first solenoid directional control valve YV1 A mouths, the first solenoid directional control valve YV1 B mouths It is connected with fuel tank, the second inserted valve C2 hydraulic control mouth also passes through the 3rd overflow valve F3 and the first solenoid directional control valve YV1 T mouth phases Even, the second inserted valve C2 hydraulic control mouth is also connected by the 4th overflow valve F4 with fuel tank；First solenoid directional control valve YV1 is middle-position machine It can be the three position four-way directional control valve of H types；3rd inserted valve C3 hydraulic control mouth is connected with the second solenoid directional control valve YV2 A mouths, and second Solenoid directional control valve YV2 P mouths are connected with the 3rd inserted valve C3 entrance, the second solenoid directional control valve YV2 T mouth connected tanks；Second Solenoid directional control valve YV2 and the 4th solenoid directional control valve YV4 is two position and four-way reversing valves.First gear pump P1 starts, the 4th electromagnetism Reversal valve YV4 obtain it is electric, the first inserted valve C1 open, pressure oil is through the first check valve D1, the first inserted valve C1 and the second check valve D2 enters left pressure oil circuit G1；First solenoid directional control valve YV1 right side coil YV1-1 obtains electric, and the second inserted valve C2 is closed, by the Three overflow valve F3 control left pressure oil circuit G1 in low pressure；Second solenoid directional control valve YV2 obtains electric, the 3rd inserted valve C3 openings, pressure Power oil enters the cavity of resorption of the compound cushion cylinder in left side, the initial position of adjustment left side cushion cylinder piston, left side cushion cylinder The first displacement transducer L1 that is displaced through of piston feeds back to control system.

As further improvement of the utility model, second gear pump P2 outlet is inserted by the 3rd check valve D3 and the 6th Dress valve C6 entrance is connected, and the 6th inserted valve C6 outlet passes through the 4th check valve D4 and the 7th inserted valve C7 and the 8th inserted valve C8 entrance is connected, the 7th inserted valve C7 outlet connected tank, and the 8th inserted valve C8 outlet passes through right pressure oil circuit G2 and position It is connected in the cavity of resorption of the compound cushion cylinder on right side；6th inserted valve C6 hydraulic control mouth and the tenth solenoid directional control valve YV10 A Mouth is connected, and the tenth solenoid directional control valve YV10 P mouths are connected with the 6th inserted valve C6 entrance, the tenth solenoid directional control valve YV10 T Mouth connected tank；7th inserted valve C7 hydraulic control mouth is connected with the 7th solenoid directional control valve YV7 A mouths, the 7th solenoid directional control valve YV7's B mouths are connected with fuel tank, and the 7th inserted valve C7 hydraulic control mouth also passes through the 7th overflow valve F7 and the 7th solenoid directional control valve YV7 T mouths It is connected, the 7th inserted valve C7 hydraulic control mouth is also connected by the 8th overflow valve F8 with fuel tank；7th solenoid directional control valve YV7 is middle position Function is the three position four-way directional control valve of H types；8th inserted valve C8 hydraulic control mouth is connected with the 8th solenoid directional control valve YV8 A mouths, the Eight solenoid directional control valve YV8 P mouths are connected with the 8th inserted valve C8 entrance, the 8th solenoid directional control valve YV8 T mouth connected tanks；The Eight solenoid directional control valve YV8 and the tenth solenoid directional control valve YV10 are two position and four-way reversing valves.Second gear pump P2 starts, the tenth electricity Magnetic reversal valve YV10 obtains electric, the 6th inserted valve C6 openings, and pressure oil is unidirectional through the 4th check valve D3, the 6th inserted valve C6 and the 4th Valve D4 enters right pressure oil circuit G2；7th solenoid directional control valve YV7 right side coil YV7-1 obtains electric, the 7th inserted valve C7 closings, by 7th overflow valve F7 controls right pressure oil circuit G2 in low pressure；8th solenoid directional control valve YV8 obtains electric, the 8th inserted valve C8 openings, Pressure oil enters the cavity of resorption of the compound cushion cylinder in right side, the initial position of adjustment right side cushion cylinder piston, right side buffering oil The second displacement sensor L2 that is displaced through of cylinder piston feeds back to control system, is consistent both sides.

As further improvement of the utility model, the right pressure oil circuit is connected with the 5th inserted valve C5 entrance, institute State left pressure oil circuit with the 5th inserted valve C5 outlet to be connected, the 5th inserted valve C5 hydraulic control mouth and the 6th solenoid directional control valve YV6 B mouths be connected, the 6th solenoid directional control valve YV6 is two position and four-way reversing valves, the 6th solenoid directional control valve YV6 P mouths and the first shuttle valve S1 outlet is connected, and the first shuttle valve S1 two side entrances are connected with the left pressure oil circuit, right pressure oil circuit respectively.The left and right sides Compound cushion cylinder can respectively be self-regulated buffer position, action process is as follows：First gear pump P1 and second gear pump P2 Each self-starting, the 6th solenoid directional control valve YV6 obtain the P mouths electric, the 5th inserted valve C5 hydraulic control mouth passes through the 6th solenoid directional control valve YV6 Be connected with the first shuttle valve S1 centre exit, no matter the left and right sides which compound cushion cylinder cavity of resorption pressure it is big, the first shuttle Valve S1 centre exit all builds pressure, the 5th inserted valve C5 is closed, the left pressure oil circuit G1 of the compound cushion cylinder in the left and right sides Cut off with right pressure oil circuit G2, can respective position of adjusting yoke and lower locking nut, guarantee left and right buffer position is same In height.When compound cushion cylinder plays pooling feature, the 6th solenoid directional control valve YV6 dead electricity, the 5th inserted valve C5 hydraulic control Mouth decompression, opens the 5th inserted valve C5, and the cavity of resorption of the compound cushion cylinder in the left and right sides is connected, so as to ensure the left and right sides The pressure of compound cushion cylinder cavity of resorption is equal, prevents unbalance loading.Now, the 3rd inserted valve C3 opens voluntarilies or the second electricity Magnetic reversal valve YV2 obtain it is electric open the 3rd inserted valve C3, the first solenoid directional control valve YV1 left side coil YV1-2 obtains electric, and second inserts Fill valve C2 to close, controlled left pressure oil circuit G1 in amount compensator or trimmer pressure by the 4th overflow valve F4.Similarly, the 7th electromagnetism on right side Reversal valve YV7 left side coil YV7-2 obtain it is electric, the 7th inserted valve C7 close, right pressure oil circuit G2 is controlled by the 8th overflow valve F8 System is in amount compensator or trimmer pressure.

As further improvement of the utility model, left pressure oil circuit G1 is connected with the 4th inserted valve C4 outlet, and the 4th Inserted valve C4 entrance connected tank, the 4th inserted valve C4 hydraulic control mouth are connected with the 5th solenoid directional control valve YV5 A mouths, the 5th electricity Magnetic reversal valve YV5 P mouths are connected with left pressure oil circuit G1, the 5th solenoid directional control valve YV5 T mouth connected tanks；Right pressure oil circuit G2 Outlet with the 9th inserted valve C9 is connected, the 9th inserted valve C9 entrance connected tank, the 9th inserted valve C9 hydraulic control mouth and the tenth One solenoid directional control valve YV11 A mouths are connected, and the 11st solenoid directional control valve YV11 P mouths are connected with right pressure oil circuit G2, and the 11st Solenoid directional control valve YV11 T mouth connected tanks；5th solenoid directional control valve YV5 and the 11st solenoid directional control valve YV11 is two-bit triplet Reversal valve.When sliding block is in descending, the 5th solenoid directional control valve YV5 obtains electric, the 4th inserted valve C4 openings；11st solenoid directional control valve YV11 obtains electric, the 9th inserted valve C9 openings, makes the cavity of resorption of the compound cushion cylinder in the left and right sides directly to tank drainback.

As further improvement of the utility model, the second check valve D2 outlet by the 3rd solenoid directional control valve YV3 with First accumulator AC1 entrance is connected, and first is provided between the 3rd solenoid directional control valve YV3 and the first accumulator AC1 entrance Pressure switch H1 and first pressure table B1, the first accumulator AC1 bottom lead to fuel tank by the first fuel outlet ball valve V1；4th is single Outlet to valve D4 is connected by the 9th solenoid directional control valve YV9 with the second accumulator AC2 entrance, the 9th solenoid directional control valve YV9 Second pressure relay H2 and second pressure gauge B2 are installed between the second accumulator AC2 entrance, the second accumulator AC2's Bottom leads to fuel tank by the second fuel outlet ball valve V2.In the period for removing sliding block backhaul, first gear pump P1 starts, the 4th electromagnetism Reversal valve YV4 obtains electric, and the first inserted valve C1 is opened, and pressure oil enters fuel feed pump through the second check valve D2；First solenoid directional control valve YV1 left side coil YV1-2 obtains electric, the second inserted valve C2 closings, is controlled left pressure oil circuit G1 in volume by the 4th overflow valve F4 Constant-pressure；The 3rd solenoid directional control valve YV3 is obtained electric simultaneously, and pressure oil is to the first accumulator AC1 topping ups, and supercharging pressure is by first pressure Relay H1 is controlled, and the first overflow valve F1 shows pressure as protection, first pressure table B1.Similarly, second gear pump P2 starts, Tenth solenoid directional control valve YV10 obtains electric, and the 6th inserted valve C6 is opened, and pressure oil enters fuel feed pump through the 4th check valve D4；7th electricity Magnetic reversal valve YV7 left side coil YV7-2 obtains electric, and the 7th inserted valve C7 is closed, by the 8th overflow valve F8 by right pressure oil circuit G2 Control is in rated pressure；The 9th solenoid directional control valve YV9 is obtained electric simultaneously, pressure oil to the second accumulator AC2 topping ups, supercharging pressure by Second pressure relay H2 is controlled, and the 5th overflow valve F5 shows pressure as protection, second pressure gauge B2.Now, the 6th electromagnetism Reversal valve YV6 dead electricity, the 5th inserted valve C5 open modes, the compound cushion cylinder in left and right are in intercommunication state.When sliding block backhaul When, first gear pump P1 start, the 4th solenoid directional control valve YV4 obtain it is electric, the first inserted valve C1 open, pressure oil is through the second check valve D2 enters fuel feed pump；First solenoid directional control valve YV1 left side coil YV7-1 obtains electric, the second inserted valve C2 closings, by the 4th overflow Valve F4 controls fuel feed pump in rated pressure；Second solenoid directional control valve YV2 obtain it is electric make the 3rd inserted valve C3 open, while the 3rd electricity Magnetic reversal valve YV3 obtains the cavity of resorption oil-feed of electric pressure oil cushion cylinder compound to the left in the first accumulator AC1, realizes and stores Can device auxiliary backhaul.Similarly, second gear pump P2 starts, and the tenth solenoid directional control valve YV10 obtains electric, the 6th inserted valve C6 openings, pressure Power oil enters fuel feed pump through the 4th check valve D4；7th solenoid directional control valve YV7 left side coil YV7-2 obtains electric, the 7th inserted valve C7 is closed, and is controlled fuel feed pump in rated pressure by the 8th overflow valve F8；8th solenoid directional control valve YV8, which is obtained, electric makes the 8th inserted valve C8 is opened, while the 9th solenoid directional control valve YV9 obtains electric, pressure oil in the second accumulator AC2 compound cushion cylinder to the right Cavity of resorption oil-feed, realize accumulator aid in backhaul.Now, the 6th solenoid directional control valve YV6 dead electricity, the 5th inserted valve C5 open shapes State, the compound cushion cylinder in left and right are in intercommunication state.

Brief description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and detailed description, accompanying drawing only provides ginseng Examine and used with explanation, be not used to limit the utility model.

Fig. 1 is the front view of the hydraulic press of the compound cushion cylinder of the utility model band.

Fig. 2 is the structural representation of compound cushion cylinder in Fig. 1.

Fig. 3 is the structural representation of plunger case in Fig. 1.

Fig. 4 is the hydraulic schematic diagram of the hydraulic press of the compound cushion cylinder of the utility model band.

In figure：1. column；2. entablature；3. sliding block；3a. slide block buffers blocks；4. master cylinder；5. compound cushion cylinder； 5a. cushion cylinder pistons；5b. cushion cylinder piston rods；5c. cushion cylinder top covers；5d. cushion blocks；5e. cushion cylinder bottoms；5f. Cushion cylinder flange；5g. cushion cylinder locknuts；5h. cylinder buffer blocks；6. plunger case；6a. plunger case epicoele hydraulic fluid ports；6b. plungers Cylinder topping up interface；6c. plunger case cavity of resorption hydraulic fluid ports；6d. plunger case piston center holes；7. small oil tank；7a. small oil tank centre bores；7b. Small oil tank locking nut；L1. the first displacement transducer；L2. second displacement sensor；B1. first pressure table；B2. second pressure Table；B3. the 3rd pressure gauge；BP1. first pressure sensor；BP2. second pressure sensor；BP3. the 3rd pressure sensor； AC1. the first accumulator；AC2. the second accumulator；H1. first pressure relay；H2. second pressure relay；V1. first drain the oil Ball valve；V2. the second fuel outlet ball valve；P1. first gear pump；P2. second gear pump；P3. Three gear pump；C1. the first inserted valve； C2. the second inserted valve；C3. the 3rd inserted valve；C4. the 4th inserted valve；C5. the 5th inserted valve；C6. the 6th inserted valve；C7. the 7th Inserted valve；C8. the 8th inserted valve；C9. the 9th inserted valve；C10. the tenth inserted valve；C11. the 11st inserted valve；C12. the ten two Inserted valve；D0. replenishing valve；D1. the first check valve；D2. the second check valve；D3. the 3rd check valve；D4. the 4th check valve；S1. First shuttle valve；S2. the second shuttle valve；G1. left pressure oil circuit；G2. right pressure oil circuit；F1. the first overflow valve；F2. the second overflow valve； F3. the 3rd overflow valve；F4. the 4th overflow valve；F5. the 5th overflow valve；F6. the 6th overflow valve；F7. the 7th overflow valve；F8. the 8th Overflow valve；F9. the 9th overflow valve；YV1. the first solenoid directional control valve；YV2. the second solenoid directional control valve；YV3. the 3rd electromagnetic switch Valve；YV4. the 4th solenoid directional control valve；YV5. the 5th solenoid directional control valve；YV6. the 6th solenoid directional control valve；YV7. the 7th electromagnetic switch Valve；YV8. the 8th solenoid directional control valve；YV9. the 9th solenoid directional control valve；YV10. the tenth solenoid directional control valve；YV11. the 11st electromagnetism Reversal valve；YV12. the 12nd solenoid directional control valve；YV13. the 13rd solenoid directional control valve；YV14. the 14th solenoid directional control valve； YV15. the 15th solenoid directional control valve；YV16. the 16th solenoid directional control valve.

Embodiment

As shown in figure 1, the hydraulic press of the compound cushion cylinder of the utility model band, including left and right pillar 1 and it is connected to a left side Entablature 2 between right column top, the center of entablature 2 are provided with plunger case 6, and the left and right sides of plunger case 6 is symmetrically installed There is a master cylinder 4, the lower end of master cylinder piston and plunger case piston is fixedly connected with sliding block 3, and the left and right ends of entablature 2 are symmetrically installed Have a compound cushion cylinder 5, compound cushion cylinder 5 includes the cushion cylinder cylinder body of upper end open, cushion cylinder cylinder body it is interior Cushion cylinder piston 5a is provided with chamber, cushion cylinder piston 5a center is connected with the cushion cylinder piston rod 5b extended downwardly, Cushion cylinder piston rod 5b lower end is stretched out from cushion cylinder bottom 5e center, and cushion cylinder piston rod 5b lower end spins There is cylinder buffer block 5h；The left and right sides of sliding block 3 is symmetrically connected with the slide block buffers block 3a stretched out laterally, slide block buffers gear Block 3a is set in cushion cylinder piston rod 5b bottom and positioned at cylinder buffer block 5h top.

On compound cushion cylinder installation entablature 2, cushion cylinder piston rod 5b does not follow sliding block 3 to act, alleviate with The weight that sliding block 3 moves up and down；When under sliding block 3 is fast, slide block buffers block 3a empty sets slide on cushion cylinder piston rod 5b, when When the pressure H of sliding block 3 enters buffer position, slide block buffers block 3a touches cylinder buffer block 5h, and compound cushion cylinder is now Play cushioning effect.During 3 backhaul of sliding block, pressure oil enters the cavity of resorption of compound cushion cylinder, and cushion cylinder piston 5a is transported upwards Dynamic, cushion cylinder piston rod 5b holds up the slide block buffers block 3a of sliding block 3 by cylinder buffer block 5h upwards, balances sliding block 3 And the weight of mould, mitigate the load of backhaul, improve reverberation matrix method.

The upper port of cushion cylinder cylinder body is evenly distributed with cushion block 5d, and cushion block 5d top is provided with cushion cylinder top cover 5c, Cushion cylinder top cover 5c periphery is provided with the shirt rim that extends downwardly, screw from top to bottom through cushion cylinder top cover 5c screw and Cushion block 5d and the upper port for being screwed in cushion cylinder cylinder body；The lower end of cushion cylinder cylinder body is provided with cushion cylinder flange 5f, buffering Cylinder flange 5f is resisted against the lower surface of entablature 2, and the upper end of cushion cylinder cylinder body is connected with cushion cylinder locknut 5g, buffering oil Cylinder locknut 5g is pressed in the upper surface of entablature 2.Cushion cylinder flange 5f and cushion cylinder locknut 5g make compound cushion cylinder exist Positioned on entablature 2, cushion block 5d causes cushion cylinder top cover 5c to leave the segment distance of upper port one of cushion cylinder cylinder body, just Air discharge above piston；Cushion cylinder top cover 5c and its shirt rim cover in the upper port of cushion cylinder cylinder body, prevent different Thing enters.

Plunger case 6 includes the plunger cylinder of upper end closed, and plunger case piston is plugged in the inner chamber of plunger cylinder, post Plunger case epicoele hydraulic fluid port 6a and plunger case topping up interface 6b, the lower circumference of plunger cylinder are respectively equipped with the top of plug cylinder cylinder body It is provided with axis of the plunger case cavity of resorption hydraulic fluid port 6c along plunger case piston and is provided with the plunger case piston center hole 6d extended from top to bottom, Small oil tank 7 is plugged with plunger case piston center hole 6d, the top of small oil tank 7 is stretched out from the roof centre bore of plunger cylinder And it is fixed on by small oil tank locking nut 7b in plunger cylinder, small oil tank 7 and plunger cylinder and plunger case piston centre Realized and sealed by seal respectively between the 6d of hole, the small oil tank centre bore 7a of insertion is provided with along the axis of small oil tank 7；Plunger case The implementation of port of topping up interface 6b and master cylinder 4 is connected by replenishing valve D0 with fuel tank respectively.

A small oil tank 7 is embedded in plunger case piston, pressure oil enters plunger case piston from small oil tank centre bore 7a In centre bore 6d, deadweight of the fast lower action of sliding block 3 without relying on sliding block 3, because the capacity of small oil tank 7 is small, phase can be promoted The hydraulic oil of co-content enables to small oil tank 7 to promote the bigger stroke of plunger case piston-advance so that speed when under sliding block 3 is fast Faster, the operational efficiency of lathe is higher, while has the advantages of energy-conservation, low noise for degree.

First gear pump P1 outlet is connected by the first check valve D1 with the first inserted valve C1 entrance, the first inserted valve C1 outlet is connected by the second check valve D2 with the second inserted valve C2 and the 3rd inserted valve C3 entrance, the second inserted valve C2's Connected tank is exported, the 3rd inserted valve C3 outlet passes through the cavity of resorption of compound cushion cylinders of the left pressure oil circuit G1 with being located at left side It is connected；First inserted valve C1 hydraulic control mouth is connected with the 4th solenoid directional control valve YV4 A mouths, the 4th solenoid directional control valve YV4 P mouths It is connected with the first inserted valve C1 entrance, the 4th solenoid directional control valve YV4 T mouth connected tanks；Second inserted valve C2 hydraulic control mouth with First solenoid directional control valve YV1 A mouths are connected, and the first solenoid directional control valve YV1 B mouths are connected with fuel tank, the second inserted valve C2 liquid Control mouth is also connected by the 3rd overflow valve F3 with the first solenoid directional control valve YV1 T mouths, and the second inserted valve C2 hydraulic control mouth also passes through 4th overflow valve F4 is connected with fuel tank；First solenoid directional control valve YV1 is the three position four-way directional control valve that Median Function is H types；3rd Inserted valve C3 hydraulic control mouth is connected with the second solenoid directional control valve YV2 A mouths, the second solenoid directional control valve YV2 P mouths and the 3rd inserting Valve C3 entrance is connected, the second solenoid directional control valve YV2 T mouth connected tanks；Second solenoid directional control valve YV2 and the 4th solenoid directional control valve YV4 is two position and four-way reversing valves.

Second gear pump P2 outlet is connected by the 3rd check valve D3 with the 6th inserted valve C6 entrance, the 6th inserted valve C6 outlet is connected by the 4th check valve D4 with the 7th inserted valve C7 and the 8th inserted valve C8 entrance, the 7th inserted valve C7's Connected tank is exported, the 8th inserted valve C8 outlet passes through the cavity of resorption of compound cushion cylinders of the right pressure oil circuit G2 with being located at right side It is connected；6th inserted valve C6 hydraulic control mouth is connected with the tenth solenoid directional control valve YV10 A mouths, the tenth solenoid directional control valve YV10 P Mouth is connected with the 6th inserted valve C6 entrance, the tenth solenoid directional control valve YV10 T mouth connected tanks；7th inserted valve C7 hydraulic control mouth It is connected with the 7th solenoid directional control valve YV7 A mouths, the 7th solenoid directional control valve YV7 B mouths are connected with fuel tank, the 7th inserted valve C7's Hydraulic control mouth is also connected by the 7th overflow valve F7 with the 7th solenoid directional control valve YV7 T mouths, and the 7th inserted valve C7 hydraulic control mouth is also logical The 8th overflow valve F8 is crossed with fuel tank to be connected；7th solenoid directional control valve YV7 is the three position four-way directional control valve that Median Function is H types；The Eight inserted valve C8 hydraulic control mouth is connected with the 8th solenoid directional control valve YV8 A mouths, and the 8th solenoid directional control valve YV8 P mouths and the 8th are inserted Dress valve C8 entrance is connected, the 8th solenoid directional control valve YV8 T mouth connected tanks；8th solenoid directional control valve YV8 and the tenth electromagnetic switch Valve YV10 is two position and four-way reversing valves.

Right pressure oil circuit is connected with the 5th inserted valve C5 entrance, the outlet phase of left pressure oil circuit and the 5th inserted valve C5 Even, the 5th inserted valve C5 hydraulic control mouth is connected with the 6th solenoid directional control valve YV6 B mouths, and the 6th solenoid directional control valve YV6 is two four Logical reversal valve, the 6th solenoid directional control valve YV6 P mouths are connected with the first shuttle valve S1 outlet, the first shuttle valve S1 two side entrances point It is not connected with left pressure oil circuit, right pressure oil circuit.

Left pressure oil circuit G1 is connected with the 4th inserted valve C4 outlet, the 4th inserted valve C4 entrance connected tank, and the 4th inserts Dress valve C4 hydraulic control mouth is connected with the 5th solenoid directional control valve YV5 A mouths, the 5th solenoid directional control valve YV5 P mouths and left pressure oil circuit G1 is connected, the 5th solenoid directional control valve YV5 T mouth connected tanks；Right pressure oil circuit G2 is connected with the 9th inserted valve C9 outlet, and the 9th Inserted valve C9 entrance connected tank, the 9th inserted valve C9 hydraulic control mouth are connected with the 11st solenoid directional control valve YV11 A mouths, and the tenth One solenoid directional control valve YV11 P mouths are connected with right pressure oil circuit G2, the 11st solenoid directional control valve YV11 T mouth connected tanks；5th Solenoid directional control valve YV5 and the 11st solenoid directional control valve YV11 is two-bit triplet reversal valve.

Second check valve D2 outlet is connected by the 3rd solenoid directional control valve YV3 with the first accumulator AC1 entrance, and the 3rd First pressure relay H1 and first pressure table B1 are installed between solenoid directional control valve YV3 and the first accumulator AC1 entrance, the One accumulator AC1 bottom leads to fuel tank by the first fuel outlet ball valve V1；4th check valve D4 outlet passes through the 9th electromagnetic switch Valve YV9 is connected with the second accumulator AC2 entrance, is installed between the 9th solenoid directional control valve YV9 and the second accumulator AC2 entrance There are second pressure relay H2 and second pressure gauge B2, the second accumulator AC2 bottom to lead to fuel tank by the second fuel outlet ball valve V2.

The compound cushion cylinder of the left and right sides can respectively be self-regulated buffer position, and action process is as follows：First gear pump P1 and each self-startings of second gear pump P2, the 6th solenoid directional control valve YV6 obtain electric, and the 5th inserted valve C5 hydraulic control mouth passes through the 6th electricity Magnetic reversal valve YV6 P mouths are connected with the first shuttle valve S1 centre exit, no matter the left and right sides which compound cushion cylinder cavity of resorption Pressure it is big, the first shuttle valve S1 centre exit all builds pressure, by the 5th inserted valve C5 close, the compound cushion cylinder in the left and right sides Left pressure oil circuit G1 and right pressure oil circuit G2 cut off, can respective position of adjusting yoke and lower locking nut, ensure or so Buffer position is on sustained height.

First gear pump P1 start, the 4th solenoid directional control valve YV4 obtain it is electric, the first inserted valve C1 open, pressure oil is through first Check valve D1, the first inserted valve C1 and the second check valve D2 enter left pressure oil circuit G1；First solenoid directional control valve YV1 right-hand line Circle YV1-1 obtains electric, the second inserted valve C2 closings, is controlled left pressure oil circuit G1 in low pressure by the 3rd overflow valve F3；Second electromagnetism Reversal valve YV2 obtains electric, the 3rd inserted valve C3 openings, and pressure oil enters the cavity of resorption of the compound cushion cylinder in left side, and adjustment left side is delayed Rush the initial position of oil cylinder piston, left side cushion cylinder piston to be displaced through the first displacement transducer L1 anti-to control system Feedback.

Second gear pump P2 start, the tenth solenoid directional control valve YV10 obtain it is electric, the 6th inserted valve C6 open, pressure oil is through the 4th Check valve D3, the 6th inserted valve C6 and the 4th check valve D4 enter right pressure oil circuit G2；7th solenoid directional control valve YV7 right-hand line Circle YV7-1 obtains electric, the 7th inserted valve C7 closings, is controlled right pressure oil circuit G2 in low pressure by the 7th overflow valve F7；8th electromagnetism Reversal valve YV8 obtains electric, the 8th inserted valve C8 openings, and pressure oil enters the cavity of resorption of the compound cushion cylinder in right side, and adjustment right side is delayed Rush the initial position of oil cylinder piston, right side cushion cylinder piston to be displaced through second displacement sensor L2 anti-to control system Feedback, is consistent both sides.

When compound cushion cylinder plays pooling feature：6th solenoid directional control valve YV6 dead electricity, the 5th inserted valve C5 hydraulic control Mouth decompression, opens the 5th inserted valve C5, and the cavity of resorption of the compound cushion cylinder in the left and right sides is connected, so as to ensure the left and right sides The pressure of compound cushion cylinder cavity of resorption is equal, prevents unbalance loading.Now, the 3rd inserted valve C3 opens voluntarilies or the second electricity Magnetic reversal valve YV2 obtain it is electric open the 3rd inserted valve C3, the first solenoid directional control valve YV1 left side coil YV1-2 obtains electric, and second inserts Fill valve C2 to close, controlled left pressure oil circuit G1 in amount compensator or trimmer pressure by the 4th overflow valve F4.Similarly, the 7th electromagnetism on right side Reversal valve YV7 left side coil YV7-2 obtain it is electric, the 7th inserted valve C7 close, right pressure oil circuit G2 is controlled by the 8th overflow valve F8 System is in amount compensator or trimmer pressure.

When compound cushion cylinder is as backhaul sliding block weight balancing function：In the period for removing sliding block backhaul, first Gear pump P1 starts, and the 4th solenoid directional control valve YV4 obtains electric, and the first inserted valve C1 is opened, and pressure oil enters through the second check valve D2 Fuel feed pump；First solenoid directional control valve YV1 left side coil YV1-2 obtains electric, the second inserted valve C2 closings, will by the 4th overflow valve F4 Left pressure oil circuit G1 controls are in rated pressure；The 3rd solenoid directional control valve YV3 is obtained electric simultaneously, and pressure oil fills to the first accumulator AC1 Liquid, supercharging pressure are controlled by first pressure relay H1, and the first overflow valve F1 shows pressure as protection, first pressure table B1. Similarly, second gear pump P2 starts, and the tenth solenoid directional control valve YV10 obtains electric, the 6th inserted valve C6 openings, and pressure oil is single through the 4th Enter fuel feed pump to valve D4；7th solenoid directional control valve YV7 left side coil YV7-2 obtains electric, the 7th inserted valve C7 closings, by the 8th Overflow valve F8 controls right pressure oil circuit G2 in rated pressure；The 9th solenoid directional control valve YV9 is obtained electric simultaneously, and pressure oil stores to second Energy device AC2 topping ups, supercharging pressure are controlled by second pressure relay H2, and the 5th overflow valve F5 is as protection, second pressure gauge B2 Show pressure.Now, the 6th solenoid directional control valve YV6 dead electricity, the 5th inserted valve C5 open modes, at the compound cushion cylinder in left and right In intercommunication state.

When sliding block is in descending, the 5th solenoid directional control valve YV5 obtains electric, the 4th inserted valve C4 openings；11st electromagnetic switch Valve YV11 obtains electric, the 9th inserted valve C9 openings, makes the cavity of resorption of the compound cushion cylinder in the left and right sides directly to tank drainback.

When sliding block backhaul, first gear pump P1 starts, and the 4th solenoid directional control valve YV4 obtains electric, the first inserted valve C1 openings, Pressure oil enters fuel feed pump through the second check valve D2；First solenoid directional control valve YV1 left side coil YV7-1 obtains electric, the second inserting Valve C2 is closed, and is controlled fuel feed pump in rated pressure by the 4th overflow valve F4；Second solenoid directional control valve YV2 obtain it is electric make the 3rd inserting Valve C3 is opened, while the 3rd solenoid directional control valve YV3 obtains electric, the pressure oil buffering oil compound to the left in the first accumulator AC1 The cavity of resorption oil-feed of cylinder, realize that accumulator aids in backhaul.Similarly, second gear pump P2 start, the tenth solenoid directional control valve YV10 obtain it is electric, 6th inserted valve C6 is opened, and pressure oil enters fuel feed pump through the 4th check valve D4；7th solenoid directional control valve YV7 left side coil YV7-2 obtains electric, the 7th inserted valve C7 closings, is controlled fuel feed pump in rated pressure by the 8th overflow valve F8；8th electromagnetic switch Valve YV8 obtain it is electric open the 8th inserted valve C8, while the 9th solenoid directional control valve YV9 obtains electric, the pressure oil in the second accumulator AC2 The cavity of resorption oil-feed of compound cushion cylinder to the right, realize that accumulator aids in backhaul.Now, the 6th solenoid directional control valve YV6 dead electricity, 5th inserted valve C5 open modes, the compound cushion cylinder in left and right are in intercommunication state.

Three gear pump P3 outlet is connected with the tenth inserted valve C10 entrance, the tenth inserted valve C10 outlet and small oil The hydraulic fluid port of cylinder 7 is connected, and the tenth inserted valve C10 hydraulic control mouth is connected with the second shuttle valve S2 outlet, the second shuttle valve S2 left entry Outlet with the tenth inserted valve C10 is connected, and the second shuttle valve S2 right entry is connected with the 12nd solenoid directional control valve YV12 A mouths, 12nd solenoid directional control valve YV12 P mouths are connected with the tenth inserted valve C10 entrance, the 12nd solenoid directional control valve YV12 T mouths Connected tank；Entrance of the tenth inserted valve C10 outlet also with the 11st inserted valve C11 is connected, the 11st inserted valve C11 outlet It is connected with the epicoele of plunger case；11st inserted valve C11 hydraulic control mouth is connected with the 13rd solenoid directional control valve YV13 A mouths, 13rd solenoid directional control valve YV13 P mouths are connected with the 11st inserted valve C11 entrance, the 13rd solenoid directional control valve YV13 T Mouth connected tank；P mouth of the Three gear pump P3 export pipeline also with the 15th solenoid directional control valve YV15 is connected, and the 15th electromagnetism changes To valve YV15 T mouth connected tanks, the 15th solenoid directional control valve YV15 B mouths are connected with each replenishing valve D0 hydraulic control mouth；11st P mouth of the inserted valve C11 outlet also with the 14th solenoid directional control valve YV14 is connected, the 14th solenoid directional control valve YV14 B mouths, T Mouth connected tank；12nd solenoid directional control valve YV12, the 13rd solenoid directional control valve YV13, the 14th solenoid directional control valve YV14 and the tenth Five solenoid directional control valve YV15 are two position and four-way reversing valves.

Three gear pump P3 outlet is connected with the 12nd inserted valve C12 entrance, and the 12nd inserted valve C12 outlet connects Fuel tank, the 12nd inserted valve C12 hydraulic control mouth are connected with the 16th solenoid directional control valve YV16 B mouths, the 16th solenoid directional control valve YV16 T mouth connected tanks；12nd inserted valve C12 hydraulic control mouth also passes through the 9th overflow valve F9 connected tanks.

When under sliding block is fast：Three gear pump P3 starts, and the 16th solenoid directional control valve YV16 obtains electric, the 12nd inserted valve C12 Close, the pressure oil of Three gear pump P3 outputs enters main fuel feed pump；12nd solenoid directional control valve YV12 obtains electric, makes the second shuttle valve S2 right side communicates with fuel tank, the tenth inserted valve C10 hydraulic control mouth decompression and open, hydraulic oil enters small oil tank 7, due to small oil The capacity of cylinder 7 is small, and the hydraulic oil of same volume enables to small oil tank 7 to promote the bigger stroke of master cylinder piston advance, is equipped with cunning Block deadweight cause sliding block it is fast under when speed faster；15th solenoid directional control valve YV15 obtains electric, and pressure oil enters each replenishing valve D0 hydraulic control mouth, each replenishing valve D0 is opened, the oil in fuel tank enters the epicoele of master cylinder 4 and plunger case by each replenishing valve D0.

When sliding block work is entered：Three gear pump P3 keeps operating, and the 16th solenoid directional control valve YV16 is kept as electricity, the 12nd electricity Magnetic reversal valve YV12 is kept as electricity, and the tenth inserted valve C10 is stayed open；13rd solenoid directional control valve YV13 obtain it is electric, the 11st insert Fill valve C11 to open, hydraulic oil into the epicoele and small oil tank 7 of plunger case, coordinates the master cylinder 4 of both sides to realize that the work of sliding block is entered simultaneously Action.

Sliding block pressurize and pre- pressure release：11st to the 16 equal dead electricity of solenoid directional control valve, Three gear pump P3 servomotor Shut down, hydraulic system enters packing state, and master cylinder epicoele keeps setting pressure, other equal no pressures in position, avoids height Long duration of action is pressed oil on Three gear pump P3；When seal internal leakage causes pressure, the pressure sensor inspection of master cylinder epicoele When measuring pressure value and being less than pressurize setting value, control system sends order-driven servomotor and slowly run, Three gear pump P3 Master cylinder epicoele repairing is given, maintains the relative constancy of pressure.Pressurize, which finishes, carries out pre- pressure release, and the 14th solenoid directional control valve YV14 is obtained Electricity, the epicoele of plunger case pass through the 14th solenoid directional control valve YV14 pressure releases.

Sliding block pressure release：Three gear pump P3 starts, and the 16th solenoid directional control valve YV16 obtains electric, the 12nd inserted valve C12 passes Close, the pressure oil of Three gear pump P3 outputs enters main fuel feed pump；The 15th solenoid directional control valve YV15 is obtained electric simultaneously, and pressure oil enters Enter each replenishing valve D0 hydraulic control mouth, each replenishing valve D0 is opened, the epicoele of master cylinder and plunger case is to tank drainback.

Sliding block backhaul：Three gear pump P3 keeps operating, the 15th solenoid directional control valve YV15 and the 16th solenoid directional control valve YV16 is kept as electricity, and each replenishing valve D0 is stayed open；13rd solenoid directional control valve YV13 obtains electric so that the 11st inserted valve C11 Open, small oil tank 7 passes through the 11st inserted valve C11 oil returns.

Second overflow valve F2 limits the maximum pressure of left side buffering oil circuit, to protect first gear pump P1；6th overflow valve F6 limits the maximum pressure of right side buffering oil circuit, to protect second gear pump P2；9th overflow valve F9 limits main fuel feed pump most High pressure, to protect Three gear pump P3.

First gear pump P1 outlet is provided with first pressure sensor BP1, and second gear pump P2 outlet is provided with Two pressure sensor BP2；The 3rd pressure sensor BP3 and the 3rd pressure gauge B3 is installed on the epicoele pipeline of plunger pump.First Accumulator AC1 bottom is provided with the first fuel outlet ball valve V1 and leads to fuel tank, and the second accumulator AC2 bottom is provided with second and drained the oil ball Valve V2 leads to fuel tank.

It the foregoing is only the preferable possible embodiments of the utility model, non-therefore limitation patent of the present utility model Protection domain.In addition to the implementation, the utility model can also have other embodiment.It is all to use equivalent substitution or equivalent change The technical scheme to be formed is changed, is all fallen within the protection domain of the requires of the utility model.Technology of the utility model without description is special Sign can be realized by or using prior art, will not be repeated here.

Claims (7)

1. a kind of hydraulic press of the compound cushion cylinder of band, including left and right pillar and the upper horizontal stroke that is connected between left and right pillar top Beam, the center of the entablature are provided with plunger case, are symmetrically installed with master cylinder at left and right sides of the plunger case, master cylinder piston and The lower end of plunger case piston is fixedly connected with a slide block, it is characterised in that：The left and right ends of the entablature are symmetrically installed with multiple Mould assembly cushion cylinder, the compound cushion cylinder include the cushion cylinder cylinder body of upper end open, the cushion cylinder cylinder body Cushion cylinder piston is provided with inner chamber, the center of the cushion cylinder piston is connected with the cushion cylinder piston rod extended downwardly, The lower end of the cushion cylinder piston rod is stretched out from the center of cushion cylinder bottom, the lower end rotation of the cushion cylinder piston rod It is connected to cylinder buffer block；The slide block buffers block stretched out laterally, the sliding block are symmetrically connected with left and right sides of the sliding block Buffer block is set in the bottom of the cushion cylinder piston rod and positioned at the top of the cylinder buffer block.

2. the hydraulic press of the compound cushion cylinder of band according to claim 1, it is characterised in that：The cushion cylinder cylinder body Upper port be evenly distributed with cushion block, the top of the cushion block is provided with cushion cylinder top cover, the periphery of the cushion cylinder top cover Provided with the shirt rim extended downwardly, screw through the screw of cushion cylinder top cover and the cushion block and is screwed in described slow from top to bottom Rush the upper port of cylinder block；The lower end of the cushion cylinder cylinder body is provided with cushion cylinder flange, and the cushion cylinder flange supports The lower surface of the entablature is leaned against, the upper end of the cushion cylinder cylinder body is connected with cushion cylinder locknut, the cushion cylinder Locknut is pressed in the upper surface of the entablature.

3. the hydraulic press of the compound cushion cylinder of band according to claim 1 or 2, it is characterised in that：First gear pump （P1）Outlet pass through the first check valve（D1）With the first inserted valve（C1）Entrance be connected, the first inserted valve（C1）Outlet lead to Cross the second check valve（D2）With the second inserted valve（C2）And the 3rd inserted valve（C3）Entrance be connected, the second inserted valve（C2）Go out Mouth connected tank, the 3rd inserted valve（C3）Outlet pass through left pressure oil circuit（G1）With under the compound cushion cylinder in left side Chamber is connected；First inserted valve（C1）Hydraulic control mouth and the 4th solenoid directional control valve（YV4）A mouths be connected, the 4th solenoid directional control valve （YV4）P mouths and the first inserted valve（C1）Entrance be connected, the 4th solenoid directional control valve（YV4）T mouth connected tanks；Second inserting Valve（C2）Hydraulic control mouth and the first solenoid directional control valve（YV1）A mouths be connected, the first solenoid directional control valve（YV1）B mouths and fuel tank phase Even, the second inserted valve（C2）Hydraulic control mouth also pass through the 3rd overflow valve（F3）With the first solenoid directional control valve（YV1）T mouths be connected, Second inserted valve（C2）Hydraulic control mouth also pass through the 4th overflow valve（F4）It is connected with fuel tank；First solenoid directional control valve（YV1）For in Median function is the three position four-way directional control valve of H types；3rd inserted valve（C3）Hydraulic control mouth and the second solenoid directional control valve（YV2）A mouths It is connected, the second solenoid directional control valve（YV2）P mouths and the 3rd inserted valve（C3）Entrance be connected, the second solenoid directional control valve（YV2）'s T mouth connected tanks；Second solenoid directional control valve（YV2）With the 4th solenoid directional control valve（YV4）It is two position and four-way reversing valves.

4. the hydraulic press of the compound cushion cylinder of band according to claim 3, it is characterised in that：Second gear pump（P2）'s Outlet passes through the 3rd check valve（D3）With the 6th inserted valve（C6）Entrance be connected, the 6th inserted valve（C6）Outlet pass through the 4th Check valve（D4）With the 7th inserted valve（C7）And the 8th inserted valve（C8）Entrance be connected, the 7th inserted valve（C7）Outlet connect oil Case, the 8th inserted valve（C8）Outlet pass through right pressure oil circuit（G2）With the cavity of resorption phase of the compound cushion cylinder positioned at right side Even；6th inserted valve（C6）Hydraulic control mouth and the tenth solenoid directional control valve（YV10）A mouths be connected, the tenth solenoid directional control valve（YV10） P mouths and the 6th inserted valve（C6）Entrance be connected, the tenth solenoid directional control valve（YV10）T mouth connected tanks；7th inserted valve （C7）Hydraulic control mouth and the 7th solenoid directional control valve（YV7）A mouths be connected, the 7th solenoid directional control valve（YV7）B mouths and fuel tank phase Even, the 7th inserted valve（C7）Hydraulic control mouth also pass through the 7th overflow valve（F7）With the 7th solenoid directional control valve（YV7）T mouths be connected, 7th inserted valve（C7）Hydraulic control mouth also pass through the 8th overflow valve（F8）It is connected with fuel tank；7th solenoid directional control valve（YV7）For in Median function is the three position four-way directional control valve of H types；8th inserted valve（C8）Hydraulic control mouth and the 8th solenoid directional control valve（YV8）A mouths It is connected, the 8th solenoid directional control valve（YV8）P mouths and the 8th inserted valve（C8）Entrance be connected, the 8th solenoid directional control valve（YV8）'s T mouth connected tanks；8th solenoid directional control valve（YV8）With the tenth solenoid directional control valve（YV10）It is two position and four-way reversing valves.

5. the hydraulic press of the compound cushion cylinder of band according to claim 4, it is characterised in that：The right pressure oil circuit with 5th inserted valve（C5）Entrance be connected, the left pressure oil circuit and the 5th inserted valve（C5）Outlet be connected, the 5th inserted valve （C5）Hydraulic control mouth and the 6th solenoid directional control valve（YV6）B mouths be connected, the 6th solenoid directional control valve（YV6）Commutated for two four-ways Valve, the 6th solenoid directional control valve（YV6）P mouths and the first shuttle valve（S1）Outlet be connected, the first shuttle valve（S1）Two side entrances point It is not connected with the left pressure oil circuit, right pressure oil circuit.

6. the hydraulic press of the compound cushion cylinder of band according to claim 4, it is characterised in that：Left pressure oil circuit（G1）With 4th inserted valve（C4）Outlet be connected, the 4th inserted valve（C4）Entrance connected tank, the 4th inserted valve（C4）Hydraulic control mouth with 5th solenoid directional control valve（YV5）A mouths be connected, the 5th solenoid directional control valve（YV5）P mouths and left pressure oil circuit（G1）It is connected, the Five solenoid directional control valves（YV5）T mouth connected tanks；Right pressure oil circuit（G2）With the 9th inserted valve（C9）Outlet be connected, the 9th insert Fill valve（C9）Entrance connected tank, the 9th inserted valve（C9）Hydraulic control mouth and the 11st solenoid directional control valve（YV11）A mouths be connected, 11st solenoid directional control valve（YV11）P mouths and right pressure oil circuit（G2）It is connected, the 11st solenoid directional control valve（YV11）T mouths connect Fuel tank；5th solenoid directional control valve（YV5）With the 11st solenoid directional control valve（YV11）It is two-bit triplet reversal valve.

7. the hydraulic press of the compound cushion cylinder of band according to claim 5, it is characterised in that：Second check valve（D2）'s Outlet passes through the 3rd solenoid directional control valve（YV3）With the first accumulator（AC1）Entrance be connected, the 3rd solenoid directional control valve（YV3）With First accumulator（AC1）Entrance between first pressure relay is installed（H1）With first pressure table（B1）, the first accumulator （AC1）Bottom pass through the first fuel outlet ball valve（V1）Logical fuel tank；4th check valve（D4）Outlet pass through the 9th solenoid directional control valve （YV9）With the second accumulator（AC2）Entrance be connected, the 9th solenoid directional control valve（YV9）With the second accumulator（AC2）Entrance it Between second pressure relay is installed（H2）And second pressure gauge（B2）, the second accumulator（AC2）Bottom drained the oil by second Ball valve（V2）Logical fuel tank.