CN203614473U - Hydraulic system for large brake type plate shearing machine - Google Patents
Hydraulic system for large brake type plate shearing machine Download PDFInfo
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- CN203614473U CN203614473U CN201320847559.9U CN201320847559U CN203614473U CN 203614473 U CN203614473 U CN 203614473U CN 201320847559 U CN201320847559 U CN 201320847559U CN 203614473 U CN203614473 U CN 203614473U
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Abstract
The utility model provides a hydraulic system for a large brake type plate shearing machine. The hydraulic system comprises an oil cylinder, an oil tank, a hydraulic power part and a hydraulic control valve, wherein the oil cylinder, the oil tank, the hydraulic power part and the hydraulic control valve are connected with a knife rest. The oil cylinder comprises a main oil cylinder and a secondary oil cylinder. A rod existing cavity of the main oil cylinder and a no-rod cavity of the secondary oil cylinder are connected to form a series-connection oil cylinder synchronously driving the knife rest to vertically move. The hydraulic system further comprises balancing oil cylinders connected to the end portion of the knife rest and used for supporting the knife rest. The number of the balancing oil cylinders is two. Oil openings of the balancing oil cylinders and an energy accumulator are connected to form closed space filled with hydraulic oil with certain pressure, wherein the hydraulic oil is used for balancing the gravity of the knife rest. The hydraulic system is suitable for the large brake type plate shearing machine, and the design of the main oil cylinder and the secondary oil cylinder ensures that the hydraulic system has sufficient shearing force in the shearing process; two power units for shearing can be used at the same time or individually, and energy consumption of the hydraulic system is effectively lowered due to the flexible selection mode; a safety circuit of the energy accumulator ensures the operation and maintenance safety of the energy accumulator.
Description
Technical field
The utility model relates to hydraulic press technical field, especially relates to a kind of large-scale lock formula hydraulic system of cutting machine.
Background technique
Guillotine shear is divided into mechanical type guillotine shear and hydraulic type guillotine shear, and the steel plate thickness that mechanical type shear function is sheared is generally below 10mm, and hydraulic type guillotine shear is used for shearing steel plate more than 6mm.Hydraulic type guillotine shear is divided into again swing-type plate shears and lock formula guillotine shear, and lock formula guillotine shear is compared with swing-type plate shears, has advantages of that shear precision is high, shearing inclination is adjustable, cutting edge long service life.In order to meet the special requirements of industry to metal blank Shearing machine such as steel structure, vehicle, engineering machinery, boats and ships, the specification of hydraulic gate type guillotine shear is also increasing.Along with shearing the increase of sheet thickness and shearing width, knife rest is large and heavy gradually, wants to realize the steadily lifting action fast of knife rest of tens tons of weighing, and the design of plate cutting hydraulic system becomes key.
Publication number is the hydraulic control system that discloses a kind of lock formula guillotine shear in the utility application of CN202129497, this control system comprises the oil cylinder that is connected with upper tool post, fuel tank, the oil pump being connected with fuel tank, drives the drive motor of oil pump and be located at solenoid directional control valve and the cartridge valve in hydraulic pipe line, accumulator is connected with oil cylinder cavity of resorption, as the power source of tool rest return stroke.In the time shearing, power unit, except overcoming operating load, also needs the stored energy of tool rest return stroke in accumulator.The advantage of this system is the auxiliary power source of accumulator as hydraulic control system, in short time, supply with the certain pressure oil of hydraulic control system, in the time that hydraulic system breaks down, still can guarantee the oil cylinder safe operation of hydraulic control system, increased the Security of system, but in the time shearing, power unit is except overcoming operating load, also need the stored energy of tool rest return stroke in accumulator, this mode is only applicable on small-sized guillotine shear.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming existing in prior art, and a kind of large-scale lock formula guillotine shear hydraulic system is provided, can realize plate compression, unclamp; Shearing, the backhaul of guillotine shear knife rest quick and stable; The adjusting of angle of shear α, and the topping up of balancing cylinder accumulator, the technological scheme of employing is: a kind of large-scale lock formula hydraulic system of cutting machine, comprises the oil cylinder, fuel tank, hydraulic power part and the hydraulic control valve that are connected with knife rest.Described oil cylinder comprises master cylinder, auxiliary oil cylinder and balancing cylinder, the rod chamber of described master cylinder is synchronizeed and is driven knife rest to move up and down with formation serial oil cylinders after the connection of auxiliary oil cylinder rodless cavity, it is characterized in that: described hydraulic system also comprise be connected to knife rest end, for supporting the balancing cylinder of knife rest, described balancing cylinder is two, hydraulic fluid port and the accumulator of balancing cylinder are connected to form confined space, in this confined space, be filled with certain pressure, for the hydraulic oil of balance tool holder gravity.
Technical characteristics of the present utility model also has: described hydraulic power part comprises power unit I and power unit II, power unit I and power unit II are under the control of hydraulic control valve, both can in master cylinder and auxiliary oil cylinder, pump into hydraulic oil, also can pump into hydraulic oil by one of them power unit separately simultaneously.
Technical characteristics of the present utility model also has: on the hydraulic pipe line between power unit I and power unit II, be provided with the one-way valve being made up of direction control plug-in unit and damper.
Technical characteristics of the present utility model also has: described hydraulic system also comprises compression control loop, described compression control loop comprises: for compressing the binder oil cylinder of plate, binder oil cylinder is connected with direction control plug-in unit III with direction control plug-in unit II, direction control plug-in unit II is also connected to described fuel tank and connects, and direction control plug-in unit III is also connected with direction control plug-in unit I, direction control plug-in unit V; While compressing plate, the energising of solenoid directional control valve II, direction control plug-in unit II is closed, and pressure oil enters binder oil cylinder through direction control plug-in unit III, and plate is compressed; In the time that pressure reaches the value of pressure relay setting, pressure relay sends signal, and electrical system confirms that plate compresses.One-way valve I and shuttle valve guarantee plate reliably to compress.
Technical characteristics of the present utility model also has: described compression control loop also comprises one-way valve I and shuttle valve.
Technical characteristics of the present utility model also has: described accumulator topping up is by solenoid directional control valve V and the control of one-way valve II, and is provided with the accumulator safety circuit of relief valve, ball valve and pressure measuring tie-in composition.
Technical characteristics of the present utility model also has: described hydraulic system also comprises angle of shear α control loop, and described angle of shear α control loop comprises the solenoid directional control valve and the Pilot operated check valve that are connected with auxiliary oil cylinder.
The beneficial effects of the utility model are: the utility model is applicable to large-scale lock formula guillotine shear, and the design of balancing cylinder has guaranteed that in shear history, hydraulic system has more sufficient shearing force; The use of major and minor oil cylinder provides minimal support force for knife rest, shear history intermediate slide can not fall voluntarily, can the extra larger resistance of the descending generation of cutter setting frame yet, and can absorb plate in breaking moment due to the load shock and vibration that produce that suddenly disappear; In shearing, two cover power units both can use simultaneously, also can be used alone, and selection mode effectively reduces hydraulic system energy consumption flexibly; Arranging of accumulator safety circuit guaranteed accumulator operation and maintenance safety.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model schematic diagram, wherein 1, power unit I; 2, power unit II; 3, air-strainer; 4, binder oil cylinder; 5, balancing cylinder I; 6 knife rests; 7, master cylinder; 8, auxiliary oil cylinder; 9, venting gas appliance; 10, balancing cylinder II; 11, accumulator; 12, ball valve I; 13, relief valve I; 14, ball valve II; 15, pressure measuring tie-in I; 16 relief valve II; 17, pressure measuring tie-in II; 18, pressure measuring tie-in III; 19, pressure measuring tie-in IV; 20, pressure measuring tie-in V; 21, pressure control plug-in unit I; 22, damper I; 23, damper II; 24, relief valve III; 25, solenoid directional control valve I; 26, damper III; 27, direction control plug-in unit I; 28, direction control plug-in unit II; 29, pressure relay; 30, one-way valve I; 31, direction control plug-in unit III; 32, damper IV; 33, solenoid directional control valve II; 34, solenoid directional control valve III; 35, direction control plug-in unit IV; 36, damper V; 37, electro-hydraulic reversing valve; 38, Pilot operated check valve; 39, solenoid directional control valve IV; 40, one-way valve II; 41, solenoid directional control valve V; 42, direction control plug-in unit V; 43, damper VI; 44, pressure control plug-in unit II; 45, damper VII; 46, damper VIII; 47, relief valve IV; 48, relief valve V; 49, solenoid directional control valve VI; 50, shuttle valve.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.According to Fig. 1, the pressure control plug-in unit pressure control plug-in unit I 21 that hydraulic system comprises is connected with power unit I 1, and be connected with fuel tank by T2 hydraulic fluid port, with damper I 22, solenoid directional control valve II 33, relief valve III 24, solenoid directional control valve I 25 mineralization pressure control loops, solenoid directional control valve I 25 can be controlled building of power unit I 1 and press and off-load.The one-way valve that direction control plug-in unit I 27 and damper III 26 form, prevents that power unit II 2 from impacting power unit I 1, and this fault state in power unit I 1 seems particularly important.Pressure control plug-in unit II 44 is connected with power unit II 2, and be connected with fuel tank by T1 hydraulic fluid port, with damper VII 45, damper VIII 46, relief valve IV 47, relief valve V 48, solenoid directional control valve VI 49 mineralization pressure control loops, solenoid directional control valve VI 49 can be controlled building of power unit II 2 and press and off-load, and can carry out the switching of high low pressure.The one-way valve that direction control plug-in unit V 42 and damper VI 43 form, prevents that power unit I 1 from impacting power unit II 2.In addition be provided with pressure measuring tie-in V 20, pressure measuring tie-in III 18.
Binder oil cylinder 4 is connected with direction control plug-in unit III 31 with direction control plug-in unit II 28, and direction control plug-in unit II 28 is also connected to T4 mouth and is connected with fuel tank, and direction control plug-in unit III 31 is also connected with direction control plug-in unit I 27, direction control plug-in unit V 42.While compressing plate, solenoid directional control valve II 33 is switched on, and direction control plug-in unit II 28 is closed, and enters binder oil cylinder 4 from the pressure oil of power unit through direction control plug-in unit III 31, and plate is compressed.In the time that pressure reaches the value that pressure relay 29 sets, pressure relay sends signal, and electrical system confirms that plate compresses.One-way valve I 30 and shuttle valve 50 guarantee plate reliably to compress, even if at knife rest to down cut but be also like this while also not contacting plate.
Master cylinder 7 rod chambers are connected with auxiliary oil cylinder 8 rodless cavities, and master cylinder 7 rodless cavities are connected with the A mouth of electro-hydraulic reversing valve 37, and are connected with direction control plug-in unit IV 35, and direction control plug-in unit IV 35 connects fuel tank by T3 mouth; Auxiliary oil cylinder 8 rodless cavities connect the B mouth of Pilot operated check valve 38 and electro-hydraulic reversing valve 37, control electro-hydraulic reversing valve 37 and solenoid directional control valve III 34 and can make master cylinder and auxiliary oil cylinder synchronously move up and down; Control solenoid directional control valve IV 39, can fill fluid to the rodless cavity of auxiliary oil cylinder 8, and emit the fluid of auxiliary oil cylinder 8 rod chambers, auxiliary oil cylinder 8 is moved downward, realize reducing of angle of shear α.Otherwise angle of shear α increases.Be provided with in addition venting gas appliance 9, for the gas in closing pipe line is discharged.Pressure measuring tie-in IV 19 can be used for measuring master cylinder rodless cavity internal pressure.
Accumulator 11 is divided into two groups, is connected respectively, and is connected with one-way valve II 40 with A5 mouth by A4 through ball valve I 12 with balancing cylinder I 5 and balancing cylinder II 10, and with relief valve I 13, relief valve II 16, ball valve II 14 connects.By controlling solenoid directional control valve V 41, can be respectively filled with the hydraulic oil of certain pressure to balancing cylinder I 5 and balancing cylinder II 10, with the gravity of balance tool holder 6.
Claims (7)
1. one kind large-scale lock formula hydraulic system of cutting machine, comprise the oil cylinder being connected with knife rest, fuel tank, hydraulic power part and hydraulic control valve, described oil cylinder comprises master cylinder and auxiliary oil cylinder, the rod chamber of described master cylinder is synchronizeed and is driven knife rest to move up and down with formation serial oil cylinders after the connection of auxiliary oil cylinder rodless cavity, it is characterized in that: described hydraulic system also comprises and is connected to knife rest end, for supporting the balancing cylinder of knife rest, described balancing cylinder is two, hydraulic fluid port and the accumulator of balancing cylinder are connected to form confined space, in this confined space, be filled with certain pressure, for the hydraulic oil of balance tool holder gravity.
2. according to large-scale lock formula hydraulic system of cutting machine claimed in claim 1, it is characterized in that: described hydraulic power part comprises power unit I and power unit II, power unit I and power unit II are under the control of hydraulic control valve, both can in master cylinder and auxiliary oil cylinder, pump into hydraulic oil, also can pump into hydraulic oil by one of them power unit separately simultaneously.
3. according to large-scale lock formula hydraulic system of cutting machine claimed in claim 2, it is characterized in that: on the hydraulic pipe line between power unit I and power unit II, be provided with the one-way valve being formed by direction control plug-in unit and damper.
4. according to large-scale lock formula hydraulic system of cutting machine claimed in claim 1, it is characterized in that: described hydraulic system also comprises compression control loop, described compression control loop comprises: for compressing the binder oil cylinder of plate, binder oil cylinder is connected with direction control plug-in unit III with direction control plug-in unit II, direction control plug-in unit II is also connected to described fuel tank and connects, and direction control plug-in unit III is also connected with direction control plug-in unit I, direction control plug-in unit V; While compressing plate, the energising of solenoid directional control valve II, direction control plug-in unit II is closed, and pressure oil enters binder oil cylinder through direction control plug-in unit III, and plate is compressed; In the time that pressure reaches the value of pressure relay setting, pressure relay sends signal, and electrical system confirms that plate compresses; One-way valve I and shuttle valve guarantee plate reliably to compress.
5. according to large-scale lock formula hydraulic system of cutting machine claimed in claim 4, it is characterized in that: described compression control loop also comprises one-way valve I and shuttle valve.
6. according to large-scale lock formula hydraulic system of cutting machine claimed in claim 1, it is characterized in that: described accumulator topping up is by solenoid directional control valve V and the control of one-way valve II, and be provided with the accumulator safety circuit of relief valve, ball valve and pressure measuring tie-in composition.
7. according to large-scale lock formula hydraulic system of cutting machine claimed in claim 2, it is characterized in that: described hydraulic system also comprises angle of shear α control loop, described angle of shear α control loop comprises the solenoid directional control valve and the Pilot operated check valve that are connected with auxiliary oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847559.9U CN203614473U (en) | 2013-12-21 | 2013-12-21 | Hydraulic system for large brake type plate shearing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847559.9U CN203614473U (en) | 2013-12-21 | 2013-12-21 | Hydraulic system for large brake type plate shearing machine |
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| Publication Number | Publication Date |
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| CN203614473U true CN203614473U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320847559.9U Expired - Fee Related CN203614473U (en) | 2013-12-21 | 2013-12-21 | Hydraulic system for large brake type plate shearing machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644152A (en) * | 2013-12-21 | 2014-03-19 | 山东力丰重型机床有限公司 | Hydraulic system of large-scale gate type plate shearing machine |
| CN105499684A (en) * | 2016-02-03 | 2016-04-20 | 江苏龙胜机床制造有限公司 | Hydraulic system of plate shearing machine |
| CN105889166A (en) * | 2014-12-18 | 2016-08-24 | 无锡锡锻机床有限公司 | Series synchronous hydraulic system of numerical control right-angle shearing machine |
| CN107420357A (en) * | 2017-07-21 | 2017-12-01 | 广西柳工机械股份有限公司 | Closed type hydraulic system |
-
2013
- 2013-12-21 CN CN201320847559.9U patent/CN203614473U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644152A (en) * | 2013-12-21 | 2014-03-19 | 山东力丰重型机床有限公司 | Hydraulic system of large-scale gate type plate shearing machine |
| CN103644152B (en) * | 2013-12-21 | 2016-04-27 | 山东力丰重型机床有限公司 | A kind of large-scale gate type hydraulic system of cutting machine |
| CN105889166A (en) * | 2014-12-18 | 2016-08-24 | 无锡锡锻机床有限公司 | Series synchronous hydraulic system of numerical control right-angle shearing machine |
| CN105499684A (en) * | 2016-02-03 | 2016-04-20 | 江苏龙胜机床制造有限公司 | Hydraulic system of plate shearing machine |
| CN107420357A (en) * | 2017-07-21 | 2017-12-01 | 广西柳工机械股份有限公司 | Closed type hydraulic system |
| CN107420357B (en) * | 2017-07-21 | 2019-01-01 | 广西柳工机械股份有限公司 | Closed type hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180118 Address after: 251717 Li Zhen happy Zheng Village of Huimin County, Huimin County, Binzhou, Shandong Patentee after: Huimin County ripling Technology Services Limited Address before: 251700 Xinyong Xinxin road in Huimin County Economic Development Zone, Binzhou, Shandong Patentee before: SHANDONG ACL HEAVY MACHINE TOOL CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20191221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |