CN109367094A - A kind of large-tonnage portal frame type hydraulic press - Google Patents
A kind of large-tonnage portal frame type hydraulic press Download PDFInfo
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- CN109367094A CN109367094A CN201811430569.6A CN201811430569A CN109367094A CN 109367094 A CN109367094 A CN 109367094A CN 201811430569 A CN201811430569 A CN 201811430569A CN 109367094 A CN109367094 A CN 109367094A
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- 239000002828 fuel tank Substances 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000005242 forging Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 190
- 239000000446 fuel Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
- B30B15/041—Guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/166—Electrical control arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Presses (AREA)
Abstract
The invention discloses a kind of large-tonnage portal frame type hydraulic presses, belong to forging machine tool technical field.Portal frame type hydraulic press of the invention, including a left side, right column, upper beam, workbench and hydraulic system, the hydraulic system includes oil cylinder, oil pump and fuel tank, the piston of oil cylinder is fixedly linked with sliding block, the hydraulic system further includes three-position four-way valve, above-mentioned oil cylinder includes the first master cylinder, second master cylinder, first auxiliary oil cylinder and the second auxiliary oil cylinder, wherein, the oil inlet of oil pump is connected with fuel tank, its oil outlet is connected with the P of three-position four-way valve mouth, the A mouth of the three-position four-way valve is connected with the cavity of resorption of the first auxiliary oil cylinder and the second auxiliary oil cylinder, its B mouthfuls is connected by the way that four electromagnetic relief pressure valves are corresponding with the epicoele of four oil cylinders respectively.The present invention is optimized by the structure of distribution mode and hydraulic system to oil cylinder, so as to effectively improve the offset load resistance of hydraulic press, the use demand of unbalance stress when meeting work pieces process.
Description
Technical field
The invention belongs to hydraulic machinery technical fields, more specifically to a kind of large-tonnage portal frame type hydraulic press.
Background technique
Hydraulic press be it is a kind of using specific hydraulic fluid as working media, using hydraulic pump as power source, by pump
Active force makes hydraulic oil enter oily cylinder piston by fluid pressure line, and by check valve make hydraulic oil fuel tank circulation make oil cylinder/
Piston circular work, to complete certain mechanical action as a kind of machinery of productivity.Hydraulic press is widely used in automobile
The spare and accessory parts of industry are processed, sizing, trimming, the correction processing of every profession and trade multiple product, shoemaking, handbag, rubber, mold, axis class,
The processing technologys such as the press fitting of Model For The Bush-axle Type Parts, the bending of imprinting moulding and plate material parts, coining, set shape stretching.
The type of hydraulic press has very much, according to the needs of production, there is very big area in volume, structure and efficiency
Not.Wherein, frame gantry hydraulic press is a kind of common oil pressure unit, mainly includes upper beam, sliding block, column, underbeam and master
Cylinder, master cylinder are set at the top of upper beam, and the piston rod of master cylinder pushes band movable slider rapid decrease, sliding block slow pressurization again, pressure maintaining at
Then type passes through master cylinder band movable slider rapid increase.In the hydraulic press course of work, pressure controls most important, pressure control
System it is accurate whether directly affect the processing quality of product.But some workpiece are in process, and stress is not usually center
Symmetrically, some even can partially half of work, but the offset load resistance of existing hydraulic press is relatively poor, so as to cause to workpiece and setting
It is standby itself to damage.
Through retrieving, the application case that Chinese Patent Application No. is 200720170175.2 discloses a kind of pressure control of hydraulic press
Device processed specifically includes and is installed on hydraulic cylinder on crossbeam, and hydraulic cylinder is divided into three groups, every group two, equidistant respectively to be fixed on
On crossbeam；The piston rod of hydraulic cylinder is fixedly linked with sliding block, and hydraulic cylinder controls its pressure by valve, and three groups of hydraulic cylinders pass through same
One gross pressure valve and every group of partial pressure valve combination being separately configured are in each group oil cylinder；Gross pressure valve keeps maximum pressure not
Becoming, partial pressure valve is separately configured, and the pressure between every group oil cylinder individually controls, and it is non-interference, to a certain extent can
The offset load resistance of equipment is effectively improved, but it needs to be arranged multiple individual partial pressure valve groups and carries out list respectively to different oil cylinders
Solely control, structure is complex, at high cost, and its oil cylinder is distributed the limitation vulnerable to crossbeam mounting area.
Further, since the tonnage of portal frame type hydraulic press is larger, entire rack external form is big, but existing portal frame type oil
The length and width of press column raw material are difficult to meet the requirement of left and right pillar, this just needs to carry out existing raw material
Splicing is usually to be spliced by the way of welding in the prior art, and welding workload is big, and gained column installation and transportation are not
Just, distribution of force is poor, and mechanical performance needs to be further increased.
Summary of the invention
1. technical problems to be solved by the inivention
Offset load resistance is relatively poor when it is an object of the invention to overcome the shortcomings of the work of existing hydraulic press, provides one
Kind large-tonnage portal frame type hydraulic press.The present invention is optimized by the structure of distribution mode and hydraulic system to oil cylinder and is set
Meter, so as to effectively improve the offset load resistance of hydraulic press, the use demand of unbalance stress when meeting work pieces process.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of large-tonnage portal frame type hydraulic press of the invention, including left and right column, upper beam, workbench and hydraulic pressure system
System, left and right column, upper beam and workbench assemble the general frame to form hydraulic press, and the hydraulic system includes oil cylinder, oil pump
And fuel tank, piston and the sliding block of oil cylinder are fixedly linked, the hydraulic system further includes three-position four-way valve, and above-mentioned oil cylinder includes the
One master cylinder, the second master cylinder, the first auxiliary oil cylinder and the second auxiliary oil cylinder, wherein the oil inlet of oil pump is connected with fuel tank, fuel-displaced
Mouth is connected with the P of three-position four-way valve mouth, the cavity of resorption phase of the A mouth and the first auxiliary oil cylinder and the second auxiliary oil cylinder of the three-position four-way valve
Even, it is connected by the way that four electromagnetic relief pressure valves are corresponding with the epicoele of four oil cylinders respectively for B mouthfuls.
Further, first master cylinder, the second master cylinder, the first auxiliary oil cylinder and the second auxiliary oil cylinder are mounted on
It is interspersed on beam and according to diamond structure, and the first auxiliary oil cylinder and the second auxiliary oil cylinder are located at the first master cylinder, the second master cylinder
Line perpendicular bisector on；It is mounted on inductor on four oil cylinders, and the inductor and electromagnetic relief pressure valve are and hydraulic control
System control is connected.
Further, further include four hydraulic control one-way valves, the oil inlet of the hydraulic control one-way valve respectively with four oil cylinders
Epicoele be connected, oil outlet is connected with fuel tank respectively, and its oil-control mouth oil outlet phase through two-position four-way valve with oil pump respectively
Even.
Further, the column is spliced by multistage, is weldingly connected between adjacent two sections, and every section of column is equal
It is made of left jigsaw and right jigsaw, connecting plate, left jigsaw, right spelling is wherein equipped between the left jigsaw of top and bottom end, right jigsaw
It is fixedly linked between plate and connecting plate by square key and bolt.
Further, upper beam and workbench installation through-hole are machined in the middle part of the column, and through-hole periphery is equipped with
Inner reinforced plate；The stitching portion of adjacent two sections of columns corresponds to the perforation being machined with through column, is correspondingly provided with gusset, muscle in perforation
It is weldingly connected between plate and two sections column.
Further, the piston free end of the oil cylinder is fixed with clinching plate, and clinching plate passes through lower lifting screw and cunning
Block is fixedly linked, and circular arc cushion block is equipped between clinching plate and sliding block, the top of circular arc cushion block formation arcuate structure protruding upward,
The bottom of the clinching plate is processed as the inner concave arc surface to match with circular arc cushion block top.
Further, respectively corresponded at the top of the bottom of the clinching plate and circular arc cushion block be machined with first cool down slot,
Second cools down slot, and the first cool down slot, the second height for cooling down slot is 3-5mm；In the clinching plate under the end of lower lifting screw
Side is additionally provided with elastic disc spring.
Further, it is fixed with guide rail on the column, is respectively fixed with L-type wearing plate, L at four ends angle of sliding block
The two-sided of type wearing plate fits with the two mutually perpendicular planes on guide rail respectively.
Further, support base is installed on the column, guide rail is fixedly linked with support base, and corresponding on support base
It is machined with guide rail installation stepped groove；The wearing plate is fixedly installed on sliding block by connecting plate, and wearing plate and connecting plate
Between be additionally provided with adjustable plate.
Further, the T mouth of the three-position four-way valve is connected through inserted valve with fuel tank, the A mouth and oil pump of the inserted valve
Oil outlet be connected, oil-control mouth is connected through overflow valve with fuel tank；The epicoele of first auxiliary oil cylinder and the second auxiliary oil cylinder is also logical
Safety valve is crossed to be connected with fuel tank.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) a kind of large-tonnage portal frame type hydraulic press of the invention, hydraulic system include oil cylinder, oil pump, fuel tank and
Three-position four-way valve, wherein the oil cylinder includes the first master cylinder, the second master cylinder, the first auxiliary oil cylinder and the second auxiliary oil cylinder, this
Invention by setting four oil cylinders and the structure of hydraulic system is optimized, it can be achieved that because unbalance loading work cause oil cylinder by
The difference of power and carry out unbalance loading adjusting, so as to effectively improve the offset load resistance of hydraulic press.
(2) a kind of large-tonnage portal frame type hydraulic press of the invention, first master cylinder, the second master cylinder, first
Auxiliary oil cylinder and the second auxiliary oil cylinder are mounted on upper beam and are interspersed according to diamond structure, and the present invention passes through the distribution to oil cylinder
It optimizes, and the combination of hydraulic system is cooperated to adjust, so as to be further ensured that the offset load resistance of hydraulic press.
(3) a kind of large-tonnage portal frame type hydraulic press of the invention, since oil cylinder shape is circle, and the installation of upper beam
Face is small, and the present invention passes through the design that four oil cylinders misplace, and using effective upper beam mounting surface, two secondary cylinders is made to be mounted on two masters
The adjacent both sides of cylinder, while four cylinder force points can be made to become symmetrical quadrangle again, guarantee oil cylinder pair to also help
The operating pressure of sliding block front, rear, left and right is symmetrical, further increases the controllability of sliding block stress.
(4) a kind of large-tonnage portal frame type hydraulic press of the invention by the way that four oil cylinders are dislocatedly distributed, and utilizes two
The auxiliary oil cylinder of a small cylinder diameter drives down the fast of sliding block with return, and the cylinder diameter area of two auxiliary oil cylinders is relatively small, institute
It needs hydraulic oil less, therefore can effectively improve the up and down action speed of sliding block, and then improve work efficiency.
(5) a kind of large-tonnage portal frame type hydraulic press of the invention is mounted on inductor on four oil cylinders, and
The inductor and electromagnetic relief pressure valve are connected with hydraulic control system control, by four inductors can effectively detect because binder by
Power is uneven and tilts to the unbalance loading that sliding block generates, then feeds back to hydraulic control system, controls corresponding electromagnetism by hydraulic control system and subtracts
Pressure valve movement realizes anti-bias load work to play the role of oil sealing and decompression.
(6) a kind of large-tonnage portal frame type hydraulic press of the invention, the column are spliced by multistage, and adjacent two
It is weldingly connected between section, and every section of column is made of left jigsaw and right jigsaw, simultaneously by using above-mentioned two half of splicing constructions
It is assembled with screw joints, is then positioned by square key, since the born strength in left and right is small, splice point is few, to both facilitate fortune
Defeated lifting, and stress is not influenced, and raw material reasonable utilization used, it is vertical to reach rack required for being completed with least cost
Column.
(7) a kind of large-tonnage portal frame type hydraulic press of the invention, is optimized by the splicing construction of column and is set
Meter, especially by the cooperation of connecting plate, inner reinforced plate and gusset, so as to be further ensured that gained column structural strength and
Bearing capacity.
(8) a kind of large-tonnage portal frame type hydraulic press of the invention, oil cylinder piston and the entire binding face of clinching plate by
Power, clinching plate are bonded with the entire cambered surface of circular arc cushion block, and circular arc cushion block is all bonded with sliding block binding face, and three binding faces are unlikely to
It is generated a little or line stress because of processing or rigging error due to, to improve the uniformity of sliding block stress.
(9) a kind of large-tonnage portal frame type hydraulic press of the invention, wherein the guiding of sliding block is two-sided by four groups of wearing plates
It is bonded guide rail to run up and down, the support base of stress point is equipped with step, and welds with column, and any one side unbalance loading has two at least
Group guide rail guiding, has duplicate protection, therefore further improve the offset load resistance of hydraulic press, while can also pass through adjustable plate
To adjust the clearance fit of sliding block.
Detailed description of the invention
Fig. 1 is a kind of hydraulic system principle figure of large-tonnage portal frame type hydraulic press of the invention；
Fig. 2 is oil cylinder distribution schematic diagram of the invention；
Fig. 3 is a kind of schematic front view of large-tonnage portal frame type hydraulic press of the invention；
Fig. 4 is a kind of schematic side view of large-tonnage portal frame type hydraulic press of the invention；
Fig. 5 is cylinder slide block mounting structure schematic diagram of the invention；
Fig. 6 is the structural schematic diagram of circular arc cushion block of the invention；
Fig. 7 is the structural schematic diagram of clinching plate of the invention；
Fig. 8 is guide rail structure schematic diagram of the invention；
Fig. 9 is pillar construction schematic diagram of the invention.
Label declaration in schematic diagram:
1, oil filter；2, oil pump；3, motor；4, three-position four-way valve；5, hydraulic control one-way valve；6, electromagnetic relief pressure valve；7, two
Four-way valve；8, safety valve；9, inserted valve；10, overflow valve；11, solenoid valve；1201, the first master cylinder；1202, the second master cylinder；
1203, piston；1301, the first auxiliary oil cylinder；1302, the second auxiliary oil cylinder；14, sliding block；15, inductor；16, fuel tank；17, upper beam；
18, workbench；19, column；1901, left jigsaw；1902, right jigsaw；1903, square key；1904, bolt；1905, inner reinforced plate；
1906, gusset；1907, splicing line；1908, connecting plate；1909, foot gusset；20, clinching plate；2001, it first cools down slot；21, circle
Arc cushion block；2101, it second cools down slot；22, upper lifting screw；23, lower lifting screw；24, elastic disc spring；25, support base；26,
Guide rail；27, adjustable plate；28, wearing plate；29, connecting plate.
Specific embodiment
To further appreciate that the contents of the present invention, now in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, including left and right column 19, upper beam 17, workbench 18
And hydraulic system, left and right column 19, upper beam 17 and workbench 18 assemble the general frame for forming hydraulic press, as shown in Figure 1, institute
The hydraulic system stated includes oil cylinder, oil pump 2, fuel tank 16 and three-position four-way valve 4, the oil cylinder include the first master cylinder 1202,
Second master cylinder 1202, the first auxiliary oil cylinder 1301 and the second auxiliary oil cylinder 1302, wherein oil pump 2 is connected with the driving of motor 3, and its
Oil inlet is connected by oil filter 1 with fuel tank 16, and oil outlet is connected with the P of three-position four-way valve 4 mouth, the three-position four-way valve 4
A mouth be connected with the cavity of resorption of the first auxiliary oil cylinder 1301 and the second auxiliary oil cylinder 1302, B mouthfuls are distinguished by four electromagnetic relief pressure valves 6
Corresponding with the epicoele of four oil cylinders to be connected, T mouthfuls are connected through inserted valve 9 with fuel tank 16, the A mouth of the inserted valve 9 and going out for oil pump 2
Hydraulic fluid port is connected, and oil-control mouth is connected through overflow valve 10 with fuel tank 16.The oil-control mouth of the electromagnetic relief pressure valve 6 respectively with corresponding oil cylinder
Epicoele is connected, and the epicoele of the first auxiliary oil cylinder 1301 and the second auxiliary oil cylinder 1302 is connected by safety valve 8 with fuel tank.
The hydraulic system of the present embodiment further includes solenoid valve 11, and the P mouth of solenoid valve 11 is connected with the oil inlet of overflow valve 10,
Its T mouthfuls is connected with fuel tank 16.The epicoele of aforementioned four oil cylinder is also corresponding with the oil inlet of four hydraulic control one-way valves 5 respectively to be connected,
The oil outlet of hydraulic control one-way valve 5 is connected with fuel tank 16 respectively, and its oil-control mouth is fuel-displaced through two-position four-way valve 7 and oil pump 2 respectively
Mouth is connected.The present embodiment is arranged four oil cylinders and is optimized to the structure of hydraulic system, it can be achieved that because unbalance loading work is led
It causes the difference of cylinder force and carries out unbalance loading adjusting, so as to effectively improve the offset load resistance of hydraulic press.
Embodiment 2
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, substantially with embodiment 1, difference mainly exists structure
In: as shown in Fig. 2, first master cylinder 1202, the second master cylinder 1202, the first auxiliary oil cylinder 1301 and the second auxiliary oil cylinder 1302
It is mounted on upper beam 17 and is interspersed according to diamond structure, and the first auxiliary oil cylinder 1301 and the second auxiliary oil cylinder 1302 are located at the
One master cylinder 1202, the second master cylinder 1202 line perpendicular bisector on.The present embodiment is optimized by the distribution to oil cylinder, and
The combination of hydraulic system is cooperated to adjust, so as to be further ensured that the offset load resistance of hydraulic press.Simultaneously as oil cylinder shape
For circle, and the mounting surface of upper beam 17 is small, by being dislocatedly distributed for four oil cylinders, using effective 17 mounting surface of upper beam, makes two
Only secondary cylinder is mounted on two adjacent both sides of master cylinder, while four cylinder force points can be made to become symmetrical quadrangle again, thus
Advantageously ensure that oil cylinder is symmetrical to the operating pressure of 14 front, rear, left and right of sliding block, further increases the controllability of sliding block stress.Separately
Outside, the present embodiment drives down the fast of sliding block 14 using the auxiliary oil cylinder of two small cylinder diameters with return, the cylinder of two auxiliary oil cylinders
Diameter area is relatively small, and required hydraulic oil is less, therefore can effectively improve the up and down action speed of sliding block, and then improve
Working efficiency.
Inductor 15, and the inductor 15 and electromagnetic relief pressure valve 6 are mounted in the present embodiment on aforementioned four oil cylinder
It is connected with hydraulic control system control, can be effectively detected by four inductors 15 and sliding block is generated because of binder discontinuity
Unbalance loading inclination, then feed back to hydraulic control system, corresponding electromagnetic relief pressure valve 6 controlled by hydraulic control system and is acted, to play envelope
Anti-bias load work is realized in the effect of oil and decompression.Specifically, every two inductor is one group, each group compares sliding block 14 respectively
Working condition whether tilt, with feeding back to hydraulic control system and being regulated and controled according to testing result.It is not pressed because 14 sliding blocks act above and below
When workpiece, operation is not influenced by the unbalance loading of workpiece to sliding block 14 above and below, and being defined by 14 guide rail of sliding block steadily to transport
Row, but when the stress point of sliding block 14 at work is uneven, sliding block 14 is by disequilibrium, and at this moment four inductors 15 are examined respectively
The data of survey are different, control the electromagnetic relief pressure valve on corresponding oil cylinder by hydraulic control system under every group of comparison.
Embodiment 3
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure is with embodiment 2, when hydraulic press is in equipment
When " to the left " side works, technique is specifically controlled are as follows:
Under fast: YV2, the two-position four-way valve 7 of the YV1 of electromagnetic relief valve, three-position four-way valve 4 (3-position 4-way electro-hydraulic reversing valve)
YV8 and YV4, YV5, YV6, YV7 of electromagnetic relief pressure valve 6 obtain electric, Oil pump electrical machinery 3 drives oil pump 2 by oil filter 1 from oil at this time
16 oil suction of case, through three-position four-way valve 4 until the epicoele of four oil cylinders, another strand of control oil circuit is through 7 (two-position four-way of two-position four-way valve
Reversal valve) straight-through four hydraulic control one-way valves 5 control mouth, open hydraulic control one-way valve 5, it is oil-filled to 4 oil cylinders.Two secondary cylinder cavity of resorptions
Oil liquid realizes the movement of fast downlink through the direct oil return box of two-position four-way valve 7；
Under slow: YV4, YV5, YV6, YV7 of the YV1 of solenoid valve 11, the YV2 of three-position four-way valve 4 and electromagnetic relief pressure valve 6 are obtained
Electricity, Oil pump electrical machinery 3 drives oil pump 2 by oil filter 1 from 16 oil suction of fuel tank at this time, through three-position four-way valve 4 until four oil cylinders
Epicoele, another strand of control oil circuit lead directly to the control mouth of four hydraulic control one-way valves 5 through two-position four-way valve 7 (two-position four way change valve),
Hydraulic control one-way valve 5 is opened, it is oil-filled to 4 oil cylinders.The oil liquid of two secondary cylinder cavity of resorptions is through 4 oil return box of three-position four-way valve, under realizing at a slow speed
The movement of row pressing component.
Left avertence carry: after 14 downlink of sliding block is pressed onto workpiece, due to the left side by the resistance of workpiece and what the right did not stressed
When, sliding block 14 can be generated and is tilted to the right, and two inductors 15 being at this moment mounted on two master cylinders 1201,1202 are detected
To 14 position data of sliding block be the right it is bigger than the left side, feeding back to hydraulic control system makes the corresponding electromagnetic pressure-decreasing of the second master cylinder 1202
6 power loss of valve, at this moment the corresponding electromagnetic relief pressure valve 6 of the second master cylinder 1202 is in close state, and is stopped to the second master cylinder 1202
Fuel feeding, the oil liquid that oil pump 2 exports is through 4 fuel feeding of three-position four-way valve to the first master cylinder 1201 and two auxiliary oil cylinders band 14 unbalance loading of movable slider
It pushes, when 14 left side downlink of sliding block is consistent with the right, the electromagnetic relief pressure valve YV7 on the second master cylinder 1202 is at semi-open
State keeps steady downlink synchronous with the left side, plays the work of left side anti-bias load.
Backhaul: the YV1 of solenoid valve 11, the YV3 of three-position four-way valve 4 obtain it is electric, at this time Oil pump electrical machinery 3 drive oil pump 2 pass through filter
Oily device 1 is from 16 oil suction of fuel tank, through three-position four-way valve 4 until the cavity of resorption of two auxiliary oil cylinders 1301,1302, push two auxiliary oil cylinders 1301,
1302 band 14 uplinks of movable slider, while sliding block 14 also drives two master cylinders 1201,1202, another strand of control oil circuit is through two-position four-way
Reversal valve 7 leads directly to the control mouth of four hydraulic control one-way valves 5, opens hydraulic control one-way valve 5, prepares to 4 oil cylinder oil returns.Four oil
The oil liquid of cylinder epicoele flows back to fuel tank through hydraulic control one-way valve 5, realizes the movement of fast uplink.
Embodiment 4
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure is with embodiment 2, when hydraulic press is in equipment
When " to the right " side works, technique is specifically controlled are as follows:
Under fast: YV2, the two-position four-way valve 7 of the YV1 of electromagnetic relief valve, three-position four-way valve 4 (3-position 4-way electro-hydraulic reversing valve)
YV8 and YV4, YV5, YV6, YV7 of electromagnetic relief pressure valve 6 obtain electric, Oil pump electrical machinery 3 drives oil pump 2 by oil filter 1 from oil at this time
16 oil suction of case, through three-position four-way valve 4 until the epicoele of four oil cylinders, another strand of control oil circuit is through 7 (two-position four-way of two-position four-way valve
Reversal valve) straight-through four hydraulic control one-way valves 5 control mouth, open hydraulic control one-way valve 5, it is oil-filled to 4 oil cylinders.Two secondary cylinder cavity of resorptions
Oil liquid realizes the movement of fast downlink through the direct oil return box of two-position four-way valve 7；
Under slow: YV4, YV5, YV6, YV7 of the YV1 of solenoid valve 11, the YV2 of three-position four-way valve 4 and electromagnetic relief pressure valve 6 are obtained
Electricity, Oil pump electrical machinery 3 drives oil pump 2 by oil filter 1 from 16 oil suction of fuel tank at this time, through three-position four-way valve 4 until four oil cylinders
Epicoele, another strand of control oil circuit lead directly to the control mouth of four hydraulic control one-way valves 5 through two-position four-way valve 7 (two-position four way change valve),
Hydraulic control one-way valve 5 is opened, it is oil-filled to 4 oil cylinders.The oil liquid of two secondary cylinder cavity of resorptions is through 4 oil return box of three-position four-way valve, under realizing at a slow speed
The movement of row pressing component.
Right avertence carry: after 14 downlink of sliding block is pressed onto workpiece, due to the right by the resistance of workpiece and what the left side did not stressed
When, sliding block 14 can be generated and is tilted to the left, and two inductors 15 being at this moment mounted on two master cylinders 1201,1202 are detected
To 14 position data of sliding block be the right it is smaller than the left side, feeding back to hydraulic control system makes the corresponding electromagnetic pressure-decreasing of the first master cylinder 1201
6 power loss of valve, at this moment the corresponding electromagnetic relief pressure valve 6 of the first master cylinder 1201 is in close state, and is stopped to the first master cylinder 1201
Fuel feeding, the oil liquid that oil pump 2 exports is through 4 fuel feeding of three-position four-way valve to the second master cylinder 1202 and two auxiliary oil cylinders band 14 unbalance loading of movable slider
It pushes, when 14 the right downlink of sliding block is consistent with the left side, the electromagnetic relief pressure valve YV4 on the first master cylinder 1201 is at semi-open
State keeps steady downlink synchronous with the right, plays the right anti-bias load work.
Backhaul: the YV1 of solenoid valve 11, the YV3 of three-position four-way valve 4 obtain it is electric, at this time Oil pump electrical machinery 3 drive oil pump 2 pass through filter
Oily device 1 is from 16 oil suction of fuel tank, through three-position four-way valve 4 until the cavity of resorption of two auxiliary oil cylinders 1301,1302, push two auxiliary oil cylinders 1301,
1302 band 14 uplinks of movable slider, while sliding block 14 also drives two master cylinders 1201,1202, another strand of control oil circuit is through two-position four-way
Reversal valve 7 leads directly to the control mouth of four hydraulic control one-way valves 5, opens hydraulic control one-way valve 5, prepares to 4 oil cylinder oil returns.Four oil
The oil liquid of cylinder epicoele flows back to fuel tank through hydraulic control one-way valve 5, realizes the movement of fast uplink.
Embodiment 5
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure is with embodiment 2, when hydraulic press is in equipment
When " to the left, on the upper side " side works, under fast, lower and backhaul control technique is distinguished with embodiment 3 and essentially consists in unbalance loading control slowly
Technique is different, specific as follows:
Left, upper unbalance loading: after 14 downlink of sliding block is pressed onto workpiece, due to left, top by workpiece resistance and right side, below
It does not stress or when stress is less than normal, sliding block 14 can be to the right to inclination, two groups of inductors, 15 institute that is at this moment mounted on sliding block 14
The data of the slide position of detection are that the right is bigger than the left side, bigger than top below, are fed back by two groups of 15 data comparisons of inductor
To hydraulic control system, make electromagnetic relief pressure valve YV6, YV7 power loss of the second master cylinder 1202 and the second auxiliary oil cylinder 1302 or in half-open
State is opened, at this moment the electromagnetic relief pressure valve of the second master cylinder 1202 and the second auxiliary oil cylinder 1302 is in close state, and is stopped to second
1302 fuel feeding of master cylinder 1202 and the second auxiliary oil cylinder, the oil liquid that oil pump 2 exports give the first master cylinder through 4 fuel feeding of electro-hydraulic reversing valve
1201 and first auxiliary oil cylinder 1301 pushed with 14 unbalance loading of movable slider, when 14 left side of sliding block, top downlink and the right, it is following unanimously
When, electromagnetic relief pressure valve YV6, YV7 on the second master cylinder 1202 and the second auxiliary oil cylinder 1302 are at semi-open state, keep with
The left side, top synchronize steady downlink, play left, top anti-bias load work.
Embodiment 6
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure is with embodiment 2, when hydraulic press is in equipment
When " to the left, on the lower side " side works, under fast, lower and backhaul control technique is distinguished with embodiment 3 and essentially consists in unbalance loading control slowly
Technique is different, specific as follows:
Left, lower unbalance loading: after 14 downlink of sliding block is pressed onto workpiece, due to a left side, the below right side, top by the resistance of workpiece
Do not stress or when stress is less than normal, sliding block 14 can to the right, the inclination of upper direction, two groups of inductors, 15 institute being at this moment mounted on sliding block 14
The data of the slide position of detection are that the right is bigger than the left side, and top is bigger than following, are fed back by two groups of 15 data comparisons of inductor
To hydraulic control system, make electromagnetic relief pressure valve YV5, YV7 power loss of the second master cylinder 1202 and the first auxiliary oil cylinder 1301 or in half-open
State is opened, at this moment the second master cylinder 1202 is in close state with the electromagnetic relief pressure valve 6 on the first auxiliary oil cylinder 1301, is stopped to the
1301 fuel feeding of two master cylinders 1202 and the first auxiliary oil cylinder, the oil liquid that oil pump 2 exports give the first master cylinder through 4 fuel feeding of electro-hydraulic reversing valve
1201 and second auxiliary oil cylinder 1302 pushed with movable slider unbalance loading, when the sliding block left side, following downlink are consistent with the right, top, the
Electromagnetic relief pressure valve YV5, YV7 on two master cylinders 1202 and the first auxiliary oil cylinder 1301 are at semi-open state, keep with the left side,
Steady downlink is synchronized below, plays left, following anti-bias load work.
Embodiment 7
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure is with embodiment 2, when hydraulic press is in equipment
When " to the right, on the lower side " side works, under fast, lower and backhaul control technique is distinguished with embodiment 3 and essentially consists in unbalance loading control slowly
Technique is different, specific as follows:
Right, lower unbalance loading: after 14 downlink of sliding block is pressed onto workpiece, due to the right side, below a left side, top by the resistance of workpiece
Do not stress or when stress is less than normal, sliding block 14 can to the left, the inclination of upper direction, two groups of inductors, 15 institute being at this moment mounted on sliding block 14
The data of the slide position of detection are that the left side is bigger than the right, and top is bigger than following, are fed back to by two groups of sensor data comparisons
Hydraulic control system makes electromagnetic relief pressure valve YV5, YV4 power loss of the first master cylinder 1201 and the first auxiliary oil cylinder 1301 or in semi-open
State, at this moment the first master cylinder 1201 is in close state with the electromagnetic relief pressure valve on the first auxiliary oil cylinder 1301, is stopped to first
1301 fuel feeding of master cylinder 1201 and the first auxiliary oil cylinder, the oil liquid that oil pump 2 exports give the second master cylinder through 4 fuel feeding of electro-hydraulic reversing valve
1202 and second auxiliary oil cylinder 1302 pushed with 14 unbalance loading of movable slider, on the right of the sliding block, when following downlink is consistent with the left side, top,
Electromagnetic relief pressure valve YV5, YV4 on first master cylinder 1201 and the first auxiliary oil cylinder 1301 are at semi-open state, keep and the right side
Side synchronizes steady downlink below, plays right, following anti-bias load work.
Embodiment 8
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure is with embodiment 2, when hydraulic press is in equipment
When " to the right, on the upper side " side works, under fast, lower and backhaul control technique is distinguished with embodiment 3 and essentially consists in unbalance loading control slowly
Technique is different, specific as follows:
Right, upper unbalance loading: after 14 downlink of sliding block is pressed onto workpiece, due to right, top by workpiece resistance and left side, below
Do not stress or when stress is less than normal, sliding block 14 can generate to the left, the inclination of lower direction, two groups of inductor institutes being at this moment mounted on sliding block
The data of the slide position of detection are that the left side is bigger than the right, bigger than top below, are fed back to by two groups of sensor data comparisons
Hydraulic control system makes electromagnetic relief pressure valve YV6, YV4 power loss of the first master cylinder 1201 and the second auxiliary oil cylinder 1302 or in semi-open shape
State, at this moment the first master cylinder 1201 is in close state with the electromagnetic relief pressure valve 6 on the second auxiliary oil cylinder 1302, is stopped main to first
1302 fuel feeding of oil cylinder 1201 and the second auxiliary oil cylinder, the oil liquid that oil pump 2 exports give the second master cylinder 1202 through 4 fuel feeding of electro-hydraulic reversing valve
And first auxiliary oil cylinder 1301 pushed with 14 unbalance loading of movable slider, when the right of sliding block 14, top downlink and the left side, consistent below, the
Electromagnetic relief pressure valve YV6, YV4 on one master cylinder 1201 and the second auxiliary oil cylinder 1302 are at semi-open state, keep with the right,
Top synchronizes steady downlink, plays right, top anti-bias load work.
Embodiment 9
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure are essentially consisted in embodiment 2, difference:
As shown in figure 9, the column 19 is spliced by multistage, being weldingly connected between adjacent two sections, (1907 be welding splicing in figure
Line), and every section of column 19 is made of left jigsaw 1901 and right jigsaw 1902, wherein the left jigsaw 1901 of top and bottom end, right
It is equipped with connecting plate 1908 between jigsaw 1902, passes through square key 1903 between left jigsaw 1901, right jigsaw 1902 and connecting plate 1908
It is fixedly linked with bolt 1904.The middle part of the present embodiment central post 19 is machined with 18 installation through-hole of upper beam 17 and workbench, and
Through-hole periphery is equipped with inner reinforced plate 1905；The stitching portion correspondence of adjacent two sections of columns 19 is machined with the perforation through column 19,
It is correspondingly provided with gusset 1906 in perforation, is weldingly connected between gusset 1906 and two sections column 19.By using above-mentioned two
Half of splicing construction is simultaneously assembled with screw joints, is then positioned by square key, since the born strength in left and right is small, splice point
It is few, so that not only convenient transportation was lifted by crane, but also stress is not influenced, and raw material reasonable utilization used, reaches complete with least cost
At required framework pillar.Meanwhile being optimized by the splicing construction of column 19, especially by connecting plate
1908, the cooperation of inner reinforced plate 1905 and gusset 1906, so as to be further ensured that the structural strength and carrying of gained column 19
Ability.
Embodiment 10
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure are essentially consisted in embodiment 9, difference:
In conjunction with Fig. 5-Fig. 7,1203 free end of piston of the oil cylinder is fixed with clinching plate 20 by upper lifting screw 22, and clinching plate 20 is logical
It crosses down lifting screw 23 to be fixedly linked with sliding block 14, and is equipped with circular arc cushion block 21, circular arc cushion block between clinching plate 20 and sliding block 14
21 top formation arcuate structure protruding upward, the bottom of the clinching plate 20 are processed as and match at the top of circular arc cushion block 21
Inner concave arc surface.In the course of work, oil cylinder piston and the entire binding face stress of clinching plate, clinching plate and the entire cambered surface of circular arc cushion block are pasted
It closes, circular arc cushion block is all bonded with sliding block binding face, and three binding faces are unlikely to because processing or rigging error due to generates a little or line
Stress, to improve the uniformity of sliding block stress.The bottom of above-mentioned clinching plate 20 and the top of circular arc cushion block 21 respectively correspond
Be machined with first cool down slot 2001, second cool down slot 2101, the first cool down slot 2001, the second height for cooling down slot 2101 is 3-
5mm on the other hand can be with by the setting for slot of cooling down on the one hand convenient for the discharge of air between clinching plate 20 and circular arc cushion block 21
It effectively prevent because of mismachining tolerance, cushion block centre stress surrounding is emptied and cushion block is caused to shake；It is lower in the clinching plate 20 to lift spiral shell
It is additionally provided with elastic disc spring 24 below the end of silk 23, so as to prevent from directlying adopt what rigid connection generated sliding block 14
Positive action.
Embodiment 11
A kind of large-tonnage portal frame type hydraulic press of the present embodiment, structure are essentially consisted in embodiment 10, difference:
As shown in figure 8, being fixed with guide rail 26 on the column 19, L-type wearing plate 28, L is respectively fixed at four ends angle of sliding block 14
The two-sided of type wearing plate 28 fits with the two mutually perpendicular planes on guide rail 26 respectively.Specifically, being equipped on the column 19
Support base 25, guide rail 26 are fixedly linked with support base 25, and correspondence is machined with 26 installation stepped groove of guide rail on support base 25；Institute
It states wearing plate 28 to be fixedly installed on sliding block 14 by connecting plate 29, and is additionally provided with adjustable plate between wearing plate 28 and connecting plate 29
27.It is run up and down by the two-sided fitting guide rail of four groups of wearing plates and sliding block is oriented to, and the support base of stress point is equipped with platform
Rank, and welded with column, any one side unbalance loading has two groups of guide rail guiding at least, has duplicate protection, therefore further increase
The offset load resistance of hydraulic press, while can adjust the clearance fit of sliding block by adjustable plate.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of large-tonnage portal frame type hydraulic press, including left and right column (19), upper beam (17), workbench (18) and hydraulic
System, left and right column (19), upper beam (17) and workbench (18) assembling form the general frame of hydraulic press, the hydraulic pressure system
System includes oil cylinder, oil pump (2) and fuel tank (16), and piston and the sliding block (14) of oil cylinder are fixedly linked, it is characterised in that: the liquid
Pressure system further includes three-position four-way valve (4), and above-mentioned oil cylinder includes the first master cylinder (1202), the second master cylinder (1202), first
Auxiliary oil cylinder (1301) and the second auxiliary oil cylinder (1302), wherein the oil inlet of oil pump (2) is connected with fuel tank (16), oil outlet with
The P mouth of three-position four-way valve (4) is connected, the A mouth and the first auxiliary oil cylinder (1301) and the second auxiliary oil cylinder of the three-position four-way valve (4)
(1302) cavity of resorption is connected, and B mouthfuls are connected by the way that four electromagnetic relief pressure valves (6) are corresponding with the epicoele of four oil cylinders respectively.
2. a kind of large-tonnage portal frame type hydraulic press according to claim 1, it is characterised in that: first master cylinder
(1202), the second master cylinder (1202), the first auxiliary oil cylinder (1301) and the second auxiliary oil cylinder (1302) are mounted on upper beam (17)
And it is interspersed according to diamond structure, and the first auxiliary oil cylinder (1301) and the second auxiliary oil cylinder (1302) are located at the first master cylinder
(1202), on the line perpendicular bisector of the second master cylinder (1202)；Inductor (15) are mounted on four oil cylinders, and described
Inductor (15) and electromagnetic relief pressure valve (6) are connected with hydraulic control system control.
3. a kind of large-tonnage portal frame type hydraulic press stated according to claim 1, it is characterised in that: further include four hydraulic control lists
To valve (5), the oil inlet of the hydraulic control one-way valve (5) is connected with the epicoele of four oil cylinders respectively, oil outlet respectively with fuel tank
(16) it is connected, and its oil-control mouth is connected through two-position four-way valve (7) with the oil outlet of oil pump (2) respectively.
4. a kind of large-tonnage portal frame type hydraulic press according to any one of claim 1-3, it is characterised in that: described
Column (19) be spliced by multistage, be weldingly connected between adjacent two sections, and every section of column (19) is by left jigsaw (1901)
It is formed with right jigsaw (1902), connecting plate is wherein equipped between the left jigsaw (1901) of top and bottom end, right jigsaw (1902)
(1908), pass through square key (1903) and bolt (1904) between left jigsaw (1901), right jigsaw (1902) and connecting plate (1908)
It is fixedly linked.
5. a kind of large-tonnage portal frame type hydraulic press according to claim 4, it is characterised in that: the column (19)
Middle part is machined with upper beam (17) and workbench (18) installation through-hole, and through-hole periphery is equipped with inner reinforced plate (1905)；It is described adjacent
The stitching portion correspondence of two sections of columns (19) is machined with the perforation through column (19), and gusset (1906), muscle are correspondingly provided in perforation
It is weldingly connected between plate (1906) and two sections column (19).
6. a kind of large-tonnage portal frame type hydraulic press according to any one of claim 1-3, it is characterised in that: described
Piston (1203) free end of oil cylinder is fixed with clinching plate (20), and clinching plate (20) passes through lower lifting screw (23) and sliding block (14)
It is fixedly linked, and is equipped with circular arc cushion block (21) between clinching plate (20) and sliding block (14), the top of circular arc cushion block (21) is upward convex
Arcuate structure is formed out, and the bottom of the clinching plate (20) is processed as the inner concave arc surface to match with circular arc cushion block (21) top.
7. a kind of large-tonnage portal frame type hydraulic press according to claim 6, it is characterised in that: the clinching plate (20)
Bottom and circular arc cushion block (21) at the top of respectively correspond be machined with first cool down slot (2001), second cool down slot (2101),
One cool down slot (2001), the second height for cooling down slot (2101) is 3-5mm: lower lifting screw (23) in the clinching plate (20)
Elastic disc spring (24) are additionally provided with below end.
8. a kind of large-tonnage portal frame type hydraulic press according to any one of claim 1-3, it is characterised in that: described
It is fixed on column (19) guide rail (26), is respectively fixed with L-type wearing plate (28) at four ends angle of sliding block (14), L-type is wear-resisting
The two-sided of plate (28) fits with the two mutually perpendicular planes on guide rail (26) respectively.
9. a kind of large-tonnage portal frame type hydraulic press according to claim 8, it is characterised in that: on the column (19)
It is equipped with support base (25), guide rail (26) is fixedly linked with support base (25), and correspondence is machined with guide rail on support base (25)
(26) stepped groove is used in installation；The wearing plate (28) is fixedly installed on sliding block (14) by connecting plate (29), and wearing plate
(28) it is additionally provided between connecting plate (29) adjustable plate (27).
10. a kind of large-tonnage portal frame type hydraulic press according to any one of claim 1-3, it is characterised in that: institute
The T mouth for stating three-position four-way valve (4) is connected through inserted valve (9) with fuel tank (16), and the A mouth of the inserted valve (9) is fuel-displaced with oil pump (2)
Mouth is connected, and oil-control mouth is connected through overflow valve (10) with fuel tank (16)；First auxiliary oil cylinder (1301) and the second auxiliary oil cylinder
(1302) epicoele also passes through safety valve (8) and is connected with fuel tank.
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| CN201811430569.6A CN109367094B (en) | 2018-11-27 | 2018-11-27 | Large-tonnage portal frame type oil press |
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