CN106180861B - A kind of lock formula plate shearing machine hydraulic system - Google Patents
A kind of lock formula plate shearing machine hydraulic system Download PDFInfo
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- CN106180861B CN106180861B CN201610798743.7A CN201610798743A CN106180861B CN 106180861 B CN106180861 B CN 106180861B CN 201610798743 A CN201610798743 A CN 201610798743A CN 106180861 B CN106180861 B CN 106180861B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
- B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Shearing Machines (AREA)
Abstract
The invention discloses a kind of lock formula plate shearing machine hydraulic systems, belong to hydraulic press technical field.Its master cylinder, auxiliary oil cylinder and backhaul oil cylinders are connect with knife rest；The inlet port of oil pump connects fuel tank, and the import connection of oil outlet and sequence valve, the outlet of sequence valve is connect with master cylinder；The import of electromagnetic relief valve I and the oil outlet of oil pump connect, and the outlet of electromagnetic relief valve I connects fuel tank；The rod chamber of master cylinder is connected with the rodless cavity of auxiliary oil cylinder, and the oil outlet of oil pump is connected by switch valve, is provided with shut-off valve II on the pipeline that switch valve is connected with master cylinder；Accumulator is connect by shut-off valve I with the oil outlet of oil pump, and the rod chamber connection of accumulator and backhaul oil cylinders, the rodless cavity of backhaul oil cylinders is connected to air.The present invention is greatly simplified compared to existing hydraulic system, structure, reduces production cost, system run all right and is able to satisfy a variety of operational requirements, and binder movement can be controlled separately and pressure controllable, also maintenance convenient to overhaul.
Description
Technical field
The invention belongs to hydraulic press technical fields, more specifically to a kind of lock formula plate shearing machine hydraulic system.
Background technique
Plate shearing machine is to be done reciprocating linear motion to shear the machine of plate with relatively another blade of a blade, is borrowed in movement
Cutter and fixed bottom knife shearing force is applied to the sheet metal of various thickness, makes plate using reasonable gap blade
Material presses required size fracture separation.Plate shearing machine is divided into mechanical plate shearing machine and fluid pressure type plate shearing machine, mechanical shear function
The steel plate thickness of shearing is generally in 10mm hereinafter, and fluid pressure type plate shearing machine is chiefly used in shearing the steel plate of 6mm or more.Fluid pressure type shear
Machine is divided into swing-type plate shears and lock formula plate shearing machine again, and lock formula plate shearing machine has shear precision height, cuts compared with swing-type plate shears
The advantages of cutting adjustable angle, cutting edge long service life.
The hydraulic system of plate shearing machine is most important for its performance, but there is also very for the hydraulic system of existing lock formula plate shearing machine
More problems.In structure, existing hydraulic system is to meet various function needs, often complex, more using plate valve, multidigit
Three-way electromagnetic valve etc. is to make every effort to reach various functional requirements, but numerous and jumbled system will lead to the decline of system stability, hydraulic
Oil walks stroke increase in pipeline, component, and system noise increases, and leakage possibility increases, and the pressure loss is serious, and hydraulic
Oil heating is serious, and complicated hydraulic system, causes equipment heavy, high production cost, the later period is also difficult to safeguard.In function
On, existing lock formula plate shearing machine hydraulic system function is not comprehensive enough, various application environments is not adapted to, for example, binder movement is not
It can individually control, the binder pressure of binder oil cylinder is not adjustable, and realizes that binder, the sequence function of shearing are less reliable, in binder
When, if pressure-plate-force is inadequate, displacement will be generated in shear history by shear material, be especially displaced when shearing and ending more bright
It is aobvious, it can make to be increased by shear material dimensional discrepancy in this way；Make to be cut panel surface generation impression if pressure-plate-force is excessive, simultaneously also
Binder cylinder is increased to the load of rack and binder beam, in order to guarantee the strength and stiffness of rack and binder beam, only increase machine
The cross-sectional area of frame and binder beam increases the manufacturing cost of plate shearing machine to increase plate shearing machine overall weight；In addition,
Consider not comprehensive enough for situations such as later period system overhaul maintenance, causes system overhaul difficult in maintenance.
It is existing to the hydraulic system research of lock formula plate shearing machine many in the prior art, such as Chinese Patent Application No. are as follows:
201310709619.5, publication date are as follows: it is hydraulic to disclose a kind of large-scale gate type plate shearing machine for the patent document on March 19th, 2014
System, including oil cylinder, fuel tank, hydraulic power part and the hydraulic control valve connecting with knife rest, oil cylinder includes master cylinder and pair oil
The synchronous driving knife rest up and down motion of serial oil cylinders is formed after cylinder, the rod chamber of master cylinder and the connection of auxiliary oil cylinder rodless cavity；Further include
The balancing cylinder for being connected to knife rest end, being used to support knife rest, balancing cylinder are two, and the hydraulic fluid port and accumulator of balancing cylinder connect
Connect to form confined space, in the confined space filled with certain pressure, hydraulic oil for balance tool holder gravity.The program is only fitted
For large-scale gate type plate shearing machine, its structure is complicated, and equipment is heavy, and production and maintenance cost are high.
For another example, Chinese Patent Application No. are as follows: 200620158152.5, publication date are as follows: the patent text on October 31st, 2007
It offers, discloses a kind of hydraulic device of lock formula plate shearing machine, fix master cylinder and auxiliary oil cylinder respectively at tool-post structure both ends, master cylinder
Oil inlet pipe is connected to by solenoid directional control valve with bidirectional high-pressure shut-off valve, which connects with fuel feeding motor, filter screen respectively, filter screen
Oil inlet port reach in oil cylinder, and the another way of bidirectional high-pressure shut-off valve is by pilot operated compound relief valve and solenoid directional control valve,
Check valve is connected to the oil outlet of auxiliary oil cylinder, and the oil inlet of auxiliary oil cylinder is connected to the oil outlet of master cylinder, forms hydraulic circuit.The party
Case function is simple, and binder movement cannot be controlled individually, and system stability is poor, does not consider that repair and maintenance etc. operates.
Summary of the invention
1, it to solve the problems, such as
For existing lock formula plate shearing machine hydraulic system exist structure is complicated, cause equipment volume bulky and hulking, be produced into
This height reduces stabilization of equipment performance, and the problem of do not adapt to various operating environments, the present invention provides a kind of lock formula plate shearing machine liquid
Pressure system, compared to existing hydraulic system, structure is greatly simplified, and reduces production cost, system run all right and is able to satisfy
A variety of operational requirements, binder movement can be controlled separately and pressure controllable, also maintenance convenient to overhaul.
2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of lock formula plate shearing machine hydraulic system, including fuel tank, oil pump, electromagnetic relief valve I, switch valve, sequence valve, accumulation of energy
Device, backhaul oil cylinders, binder cylinder, master cylinder, auxiliary oil cylinder and check valve II；The master cylinder connects knife with the piston rod of auxiliary oil cylinder
Frame, for driving knife rest to move downward the shearing of completion plate, backhaul oil cylinders are connect with knife rest, for driving knife rest to return upwards
Cheng Yundong；For the oil pump by motor driven, the inlet port of oil pump connects fuel tank, and the import of oil outlet and sequence valve connects,
The outlet of sequence valve and the rodless cavity of master cylinder connect；The import of the electromagnetic relief valve I and the oil outlet of oil pump connect, electricity
The outlet of magnetic overflow valve I connects fuel tank；The rod chamber of the master cylinder is connected with the rodless cavity of auxiliary oil cylinder, and passes through switch
Valve connects the oil outlet of oil pump, is provided with shut-off valve II on the pipeline that switch valve is connected with master cylinder；The accumulator passes through
Shut-off valve I is connect with the oil outlet of oil pump, and the rod chamber connection of accumulator and backhaul oil cylinders, the rodless cavity of backhaul oil cylinders is connected to empty
Gas.
As a further improvement of the present invention, the binder cylinder is connected by the oil outlet of two-position two-way solenoid valve and oil pump
It connects, check valve II is connected in parallel on the both ends of two-position two-way solenoid valve.
As a further improvement of the present invention, it is provided on the pipeline between the binder cylinder and two-position two-way solenoid valve
One way pressure-reducing valve.
As a further improvement of the present invention, the one way pressure-reducing valve connects pressure gauge II by pressure meter switch II.
As a further improvement of the present invention, the accumulator connects pressure gauge I by pressure meter switch I.
As a further improvement of the present invention, electromagnetic relief valve II is set between the outlet and fuel tank of the sequence valve.
As a further improvement of the present invention, the oil pressure relief of the electromagnetic relief valve I is greater than the unlatching pressure of sequence valve
Power, less than the oil pressure relief of electromagnetic relief valve II.
As a further improvement of the present invention, oil filter, the oil outlet pipe of oil pump are set between the oil pump and fuel tank
Upper installation check valve I.
As a further improvement of the present invention, the fuel tank is equipped with liquidometer, and fuel tank passes through air cleaner and sky
Gas connection.
As a further improvement of the present invention, the accumulator is bladder type hydropneumatic accumulator.
3, beneficial effect
Compared with the prior art, the invention has the benefit that
(1) lock formula plate shearing machine hydraulic system of the present invention, compared to existing hydraulic system of cutting machine, structure is greatly simplified,
Pipeline arrangement is reduced, component can focus on an integrated valve block, and structure is more compact, whole compared with the plate shearing machine of same specification
Body weight can reduce by 2.4% or more, and plate shearing machine cost reduces at least 4%, and system acting is sensitive, No leakage, stable and reliable in work,
And control precision is high, since pipeline is few, hydraulic oil stroke is short, so the course of work is generated heat less, noise is small, system pressure is more steady
Fixed, the pressure loss can be reduced to minimum；In addition, function achieved by the system is more, including pre- binder, shearing, angle of shear tune
Section, trouble hunting etc. meet various work requirements；
(2) lock formula plate shearing machine hydraulic system of the present invention, binder cylinder are connected by the oil outlet of two-position two-way solenoid valve and oil pump
It connects, can individually control binder cylinder and carry out binder, and binder pressure adjustable, pressure value is shown on pressure gauge II, adapt to different
The compression demand of thickness plate, the use of sequence valve realize that binder, the sequence function of shearing are reliable；
(3) electromagnetic relief valve II is arranged in lock formula plate shearing machine hydraulic system of the present invention between the outlet and fuel tank of sequence valve, real
The overload protection of existing system, and the oil pressure relief of electromagnetic relief valve I is greater than the cracking pressure of sequence valve, is less than electromagnetic relief valve II
Oil pressure relief, control the opening sequence of each valve, guarantee that system operates normally；
(4) lock formula plate shearing machine hydraulic system of the present invention, is arranged oil filter, keeps away how sump oil enters system between oil pump and fuel tank
At the damage of each Hydraulic Elements, check valve I is installed in the oil outlet pipe of oil pump, avoid hydraulic oil flow backwards oil-feed pump and caused by damage
Wound；
(5) lock formula plate shearing machine hydraulic system of the present invention, fuel tank are equipped with liquidometer, and hydraulic oil is high in real-time monitoring fuel tank
Degree, prevents hydraulic shortage of oil, can be replenished in time, and fuel tank avoids dust sucking from causing by air cleaner and air communication
Hydraulic oil pollution；
(6) lock formula plate shearing machine hydraulic system of the present invention, accumulator use bladder type hydropneumatic accumulator, can stored energy, steady pressure,
Energy consumption is reduced, leakage loss is compensated, has many advantages, such as that inertia is small, be quick on the draw, be not easy gas leakage, being suitable as eliminating pulse, inflation
It is easy with maintenance, inflation also facilitates；
(7) lock formula plate shearing machine hydraulic system of the present invention, structure is simple, and design is rationally, easy to implement.
Detailed description of the invention
Fig. 1 is a kind of hydraulic schematic diagram of lock formula plate shearing machine hydraulic system of the present invention.
In figure: 1, fuel tank；2, liquidometer；3, air cleaner；4, oil filter；5, oil pump；6, motor；7, check valve I；8,
Electromagnetic relief valve I；9, shut-off valve I；10, switch valve；11, sequence valve；12, pressure meter switch I；13, pressure gauge I；14, accumulation of energy
Device；15, backhaul oil cylinders；16, binder cylinder；17, shut-off valve II；18, master cylinder；19, auxiliary oil cylinder；20, one way pressure-reducing valve；21, single
To valve II；22, two-position two-way solenoid valve；23, electromagnetic relief valve II；24, pressure meter switch II；25, pressure gauge II.
Specific embodiment
The present invention is further described below with attached drawing combined with specific embodiments below.
Embodiment 1
As shown in Figure 1, a kind of lock formula plate shearing machine hydraulic system of the present embodiment, including fuel tank 1, oil pump 5, electromagnetic relief valve
I 8, switch valve 10, sequence valve 11, accumulator 14, backhaul oil cylinders 15, binder cylinder 16, master cylinder 18, auxiliary oil cylinder 19 and check valve II
21.Wherein, the master cylinder 18 connects knife rest with the piston rod of auxiliary oil cylinder 19, completes plate for driving knife rest to move downward
Shearing, auxiliary oil cylinder 19 use plunger case, backhaul oil cylinders 15 are connect with knife rest, for driving knife rest to do drawback movement upwards.
The fuel tank 1 is equipped with liquidometer 2, and real-time monitoring liquid level prevents hydraulic shortage of oil, can mend in time
It fills, fuel tank 1 avoids dust sucking from causing hydraulic oil pollution by air cleaner 3 and air communication.The oil pump 5 passes through
Motor 6 drives, and the inlet port of oil pump 5 connects fuel tank 1 by oil filter 4, oil outlet by check valve I 7 and sequence valve 11 into
Mouth connection, the outlet of sequence valve 11 is connect with the rodless cavity of master cylinder 18；The import of the electromagnetic relief valve I 8 and oil pump 5
The outlet of oil outlet connection, electromagnetic relief valve I 8 connects fuel tank 1；Electricity is set between the outlet and fuel tank 1 of the sequence valve 11
Magnetic overflow valve II 23, and the oil pressure relief of electromagnetic relief valve I 8 is greater than the cracking pressure of sequence valve 11, is less than electromagnetic relief valve II
23 oil pressure relief.
In the present embodiment, the rod chamber of the master cylinder 18 is connected with the rodless cavity of auxiliary oil cylinder 19, and passes through switch
Valve 10 connects the oil outlet of oil pump 5, is provided with shut-off valve II 17 on the pipeline that switch valve 10 and master cylinder 18 connect；The storage
Can device 14 use bladder type hydropneumatic accumulator, can stored energy, steady pressure, reduce energy consumption, compensate leakage loss, have inertia it is small, reaction spirit
It is quick, be not easy gas leakage, be suitable as eliminate pulse the advantages that, inflation and maintenance be easy, inflation also facilitate, accumulator 14 by cut
Only valve I 9 is connect with the oil outlet of oil pump 5, and accumulator 14 is connect with the rod chamber of backhaul oil cylinders 15, the rodless cavity of backhaul oil cylinders 15
It is connected to air, accumulator 14 connects pressure gauge I 13 by pressure meter switch I 12, and cracking pressure table switch I 12 can pass through pressure
The pressure of I 13 real-time monitoring accumulator 14 of power table.
In the present embodiment, the binder cylinder 16 is connect by two-position two-way solenoid valve 22 with the oil outlet of oil pump 5, unidirectionally
Valve II 21 is connected in parallel on the both ends of two-position two-way solenoid valve 22, and sets on the pipeline between binder cylinder 16 and two-position two-way solenoid valve 22
It is equipped with one way pressure-reducing valve 20, one way pressure-reducing valve 20 connects pressure gauge II 25 by pressure meter switch II 24, can real-time monitoring binder
The pressure value of cylinder 16.
In the present embodiment, electromagnetic relief valve I 8 and electromagnetic relief valve II 23 use Rexroth model DBW30B-50/
The valve of 31.5NZ5L, operating voltage are DC 24V, and the oil pressure relief of electromagnetic relief valve I 8 is set as 23MPa, electromagnetic relief valve II
23 oil pressure relief is set as 28MPa；Shut-off valve I 9 and shut-off valve II 17 use the YJF-L20H of good source board；Switch valve 10 uses
Bosch switch valve 0810, operating voltage DC 24V；Using the DZ30-50/21Y of no tin oil power board, setting is opened presses sequence valve 11
Power is 8MPa；Pressure meter switch I 12 and pressure meter switch II 24 use the KF-L8/ of Nangong City Xinghua Filters manufactory
14E, pressure gauge I 13 and pressure gauge II 25 use the YN-60I-40MPA of Nangong City Xinghua Filters manufactory；Accumulator 14
Using the NXQ1-F40/31.5 of Wuhan Fu Taisheng mechanical & electronic equipment corporation, Ltd；One way pressure-reducing valve 20 uses Fu Lide hydraulic machinery
The JDF-B20H of producer's production.
In the present embodiment, the electromagnet of electromagnetic relief valve I 8 is expressed as YV0, and the electromagnet of switch valve 10 is expressed as YV1, and two
The electromagnet of position two-way electromagnetic valve 22 is expressed as YV2, and the electromagnet of electromagnetic relief valve II 23 is expressed as YV3.It is hydraulic to this below
Each holding function of system is described in detail.
1. system unloaded standby mode
YV0, YV1, YV2 and YV3 are powered off, and oil pump 5 starts, and pressure oil flows back to oil through check valve I 7 and electromagnetic relief valve I 8
Case 1, system are in off-load standby mode.
2. pre- binder control
YV0 obtains electric, and pressure oil successively passes through check valve I 7, check valve II 21 and one way pressure-reducing valve 20 enter binder cylinder 16,
16 piston downlink of binder cylinder compresses plate, can control the pressing force of binder cylinder 16 by adjusting one way pressure-reducing valve 20, at this point, even if
Oil pump 5 does not work or YV0 power-off, if YV2 not it is electric, it is motionless that binder cylinder 16 is in binder state, with locking function；When
YV2 obtains electric, and under the spring-force driven dual of binder cylinder 16 itself, hydraulic oil discharges oil return box 1 in binder cylinder 16, and binder cylinder 16 returns to
Dead point releases binder.Such mode can individually control binder cylinder 16 and carry out binder, and binder pressure adjustable, in pressure gauge II
Pressure value is shown on 25, adapts to the compression demand of different length and thickness plate, especially when overlength plate cutting is to line, this function
It can be highly useful.
3. shearing (knife rest downlink)
YV0, YV3 obtain electric, and pressure oil initially enters binder cylinder 16, and 16 piston downlink of binder cylinder compresses plate, when system pressure
Power is more than the setting pressure of sequence valve 11, i.e. 8MPa, pressure oil enters the rodless cavity of master cylinder 18 through sequence valve 11, due to main oil
The rod chamber of cylinder 18 is connected to the rodless cavity of auxiliary oil cylinder 19, so the driving knife rest downlink synchronous with auxiliary oil cylinder 19 of master cylinder 18,
And hydraulic oil is pressed into accumulator 14 in 15 rod chamber of backhaul oil cylinders, 15 rodless cavity of backhaul oil cylinders sucks air, accumulator 14
The interior air bag full of nitrogen is compressed, and is the backhaul accumulation of energy of knife rest.
4. backhaul (knife rest uplink)
YV2 obtains electric, other solenoid valve power-off, under the pulling force effect of 16 spring of binder cylinder, hydraulic oil quilt in binder cylinder 16
Oil return box 1 is discharged, plate is unclamped in 16 backhaul of binder cylinder；Meanwhile 18 rodless cavity of master cylinder is also opened to the channel of fuel tank 1, is stored
Nitrogen pressure release action in energy device 14, the hydraulic oil being gathered in accumulator 14 start to drive 15 rod chamber of backhaul oil cylinders living
Plug pushes knife rest uplink, and air is discharged for 15 rodless cavity of backhaul oil cylinders until top dead-centre.
5. the knife rest angle of shear reduces
YV0 and YV1 obtains electric, opening shut-off valve II 17, rod chamber and pair of the pressure oil through the entrance master cylinder 18 of switch valve 10
The rodless cavity of oil cylinder 19,19 piston of auxiliary oil cylinder start downlink, knife rest under the driving of auxiliary oil cylinder 19 and the angle of workbench gradually
Reduce；After YV0 and YV1 is powered off, master cylinder 18 and auxiliary oil cylinder 19 are locked, and the knife rest angle of shear is fixed, and close shut-off valve
II 17, complete angle of shear reduction movement.In actual use, shearing thin plate needs to reduce the angle of shear, is conducive to improve production effect
Rate.
6. the knife rest angle of shear increases
YV1 obtains electric, opening shut-off valve II 17, the quilt under the driving of backhaul oil cylinders 15 of the hydraulic oil in 19 rodless cavity of auxiliary oil cylinder
Fuel tank 1,19 piston stroking upward of auxiliary oil cylinder are pushed back, knife rest is gradually increased under the driving of auxiliary oil cylinder 19 with the angle of workbench；Work as YV1
Power-off, master cylinder 18 and auxiliary oil cylinder 19 are locked, and the knife rest angle of shear is fixed, and close shut-off valve II 17, complete the angle of shear and increase
Movement.In actual use, it when shearing thicker plate, needs to increase the angle of shear, improves shear ability.
7. accumulator filling liquid
YV0 obtains electric, and system establishes pressure, and the supercharging pressure of adjustment sequence valve 11 is 12~16MPa, opening stop valve I 9,
System pressure oil enters the grease chamber of accumulator 14 through shut-off valve I 9 at this time, and hydraulic fluid pressure becomes larger in backhaul oil cylinders 15, knife
Frame slowly rises under the active force of backhaul oil cylinders 15 until top dead-centre；After pressure reaches the supercharging pressure of the setting of sequence valve 11
Pressure value tends towards stability, at this time quick closedown shut-off valve I 9, terminates 14 filling liquid of accumulator, again the work pressure of setting up sequence valve 11
Power completes 14 filling liquid of accumulator to 8MPa.Such frame mode, it is convenient to overhaul when equipment breaks down.
8. oil cylinder filling liquid
Shut-off valve I 9 is opened, discharging the hydraulic oil in accumulator 14 makes knife rest fall to lower dead center, shut-off valve II 17 is opened,
The bleed screw at the top of auxiliary oil cylinder 19 is unclamped slightly again, starts oil pump 5, YV0 and YV1 obtain electric, and hydraulic oil enters main oil
In the rod chamber of cylinder 18 and the rodless cavity of auxiliary oil cylinder 19, bleed screw is monitored, begin with pause when oil liquid is overflowed from bleed screw
Liquid-filled operation continued liquid-filled operation after five minutes, was repeated several times the above operation, until exhaust outlet does not have gas discharge, i.e.,
It indicates to have been filled with oil liquid in oil cylinder, finally locks bleed screw.
Lock formula plate shearing machine hydraulic system of the invention, compared to existing hydraulic system of cutting machine, structure is greatly simplified, and is subtracted
Education and correction for juvenile offenders road arrangement, component can focus on an integrated valve block, and structure is more compact, whole compared with the plate shearing machine of same specification
Weight can reduce by 2.4% or more, and plate shearing machine cost reduces at least 4%, and system acting is sensitive, No leakage, stable and reliable in work, and
It is high to control precision, since pipeline is few, hydraulic oil stroke is short, so the course of work is generated heat less, noise is small, system pressure is more steady
Fixed, the pressure loss can be reduced to minimum.
Example of the present invention is only that preferred embodiments of the present invention will be described, not to present inventive concept and
Range is defined, and under the premise of not departing from design philosophy of the present invention, this field engineers and technicians are to technology of the invention
The various changes and improvements that scheme is made should all fall into protection scope of the present invention.
Claims (8)
1. a kind of lock formula plate shearing machine hydraulic system, including fuel tank (1), oil pump (5), electromagnetic relief valve I (8), backhaul oil cylinders (15),
Binder cylinder (16), master cylinder (18) and auxiliary oil cylinder (19)；The master cylinder (18) connects knife with the piston rod of auxiliary oil cylinder (19)
Frame, for driving knife rest to move downward the shearing of completion plate, backhaul oil cylinders (15) are connect with knife rest, for driving knife rest upward
Do drawback movement, it is characterised in that: further include switch valve (10), sequence valve (11), accumulator (14) and check valve II (21)；Institute
The oil pump (5) stated is driven by motor (6), and the inlet port of oil pump (5) connects fuel tank (1), oil outlet and sequence valve (11) into
Mouth connection, the outlet of sequence valve (11) is connect with the rodless cavity of master cylinder (18)；The import of the electromagnetic relief valve I (8) with
The oil outlet of oil pump (5) connects, and the outlet of electromagnetic relief valve I (8) connects fuel tank (1)；The rod chamber of the master cylinder (18)
It is connected with the rodless cavity of auxiliary oil cylinder (19), and passes through the oil outlet of switch valve (10) connection oil pump (5), switch valve (10) and master
Shut-off valve II (17) is provided on the pipeline of oil cylinder (18) connection；The accumulator (14) passes through shut-off valve I (9) and oil pump
(5) oil outlet connection, accumulator (14) are connect with the rod chamber of backhaul oil cylinders (15), the rodless cavity connection of backhaul oil cylinders (15)
Air；The binder cylinder (16) is connect by two-position two-way solenoid valve (22) with the oil outlet of oil pump (5), check valve II (21)
It is connected in parallel on the both ends of two-position two-way solenoid valve (22)；Pipeline between the binder cylinder (16) and two-position two-way solenoid valve (22)
On be provided with one way pressure-reducing valve (20).
2. a kind of lock formula plate shearing machine hydraulic system according to claim 1, it is characterised in that: the one way pressure-reducing valve
(20) pass through pressure meter switch II (24) connection pressure gauge II (25).
3. a kind of lock formula plate shearing machine hydraulic system according to claim 1 or 2, it is characterised in that: the accumulator
(14) pass through pressure meter switch I (12) connection pressure gauge I (13).
4. a kind of lock formula plate shearing machine hydraulic system according to claim 1 or 2, it is characterised in that: the sequence valve
(11) electromagnetic relief valve II (23) are set between outlet and fuel tank (1).
5. a kind of lock formula plate shearing machine hydraulic system according to claim 4, it is characterised in that: the electromagnetic relief valve I
(8) oil pressure relief is greater than the cracking pressure of sequence valve (11), is less than the oil pressure relief of electromagnetic relief valve II (23).
6. a kind of lock formula plate shearing machine hydraulic system according to claim 1, it is characterised in that: the oil pump (5) and oil
Oil filter (4) are set between case (1), check valve I (7) are installed in the oil outlet pipe of oil pump (5).
7. a kind of lock formula plate shearing machine hydraulic system according to claim 1, it is characterised in that: fuel tank (1) installation
Have liquidometer (2), fuel tank (1) passes through air cleaner (3) and air communication.
8. a kind of lock formula plate shearing machine hydraulic system according to claim 6 or 7, it is characterised in that: the accumulator
It (14) is bladder type hydropneumatic accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798743.7A CN106180861B (en) | 2016-08-31 | 2016-08-31 | A kind of lock formula plate shearing machine hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798743.7A CN106180861B (en) | 2016-08-31 | 2016-08-31 | A kind of lock formula plate shearing machine hydraulic system |
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| CN108443252A (en) * | 2018-04-23 | 2018-08-24 | 无锡锡锻机床有限公司 | The hydraulic system of multistation punching shear production line |
| CN108561348A (en) * | 2018-07-11 | 2018-09-21 | 中铁磁浮科技（成都）有限公司 | Magnetic-levitation train hydraulic support system and control method |
| CN108869414B (en) * | 2018-07-23 | 2020-01-14 | 武汉理工大学 | Energy-saving non-impact hydraulic shear |
| CN109322881B (en) * | 2018-11-23 | 2024-05-28 | 安徽东海机床制造有限公司 | Double-station horizontal plate shearing machine and hydraulic system and application thereof |
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| CN206028849U (en) * | 2016-08-31 | 2017-03-22 | 安徽省华夏机床制造有限公司 | Gate type plate shearing machine hydraulic system |
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| GB191220279A (en) * | 1912-09-05 | 1913-08-07 | Davy Brothers Ltd | Improvements in Power Operated Shears, Forging Presses and the like. |
| US3031950A (en) * | 1959-06-05 | 1962-05-01 | Cleveland Crane Eng | Hydraulic press |
| US3371569A (en) * | 1965-06-28 | 1968-03-05 | Pacific Press & Shear Corp | Shear machine or the like |
| CN200967103Y (en) * | 2006-11-09 | 2007-10-31 | 徐钊 | Hydraulic equipment of lock type plate shearing machine |
| CN201184331Y (en) * | 2008-04-14 | 2009-01-21 | 狄利中 | Brake type shearing machine hydraulic device |
| CN102198539A (en) * | 2011-05-16 | 2011-09-28 | 芜湖中能机械制造有限公司 | Digital control hydraulic brake type plate shearing machine |
| CN103586527B (en) * | 2013-11-26 | 2015-10-14 | 山东泰丰液压股份有限公司 | With safety guard lock formula plate shearing machine hydraulic control system |
| CN104475854B (en) * | 2014-11-19 | 2016-09-07 | 天水锻压机床(集团)有限公司 | A kind of lock formula plate shearing machine hydraulic control system with a magnetic valve |
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