CN103192466A - Control system for blade turning die and a tensioning device - Google Patents
Control system for blade turning die and a tensioning device Download PDFInfo
- Publication number
- CN103192466A CN103192466A CN2013100856686A CN201310085668A CN103192466A CN 103192466 A CN103192466 A CN 103192466A CN 2013100856686 A CN2013100856686 A CN 2013100856686A CN 201310085668 A CN201310085668 A CN 201310085668A CN 103192466 A CN103192466 A CN 103192466A
- Authority
- CN
- China
- Prior art keywords
- fluid port
- control system
- hydraulic fluid
- oil
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention provides a control system for a blade turning die and a tensioning device with the control system for the blade turning die. The control system for the blade turning die comprises an oil supply unit, a reversing valve, an oil tank and a plurality of oil cylinders, wherein the oil supply unit is connected with the reversing valve; pressure of hydraulic oil output by the oil supply unit is adjustable; and the reversing valve is connected with a plurality of oil cylinders and is used for controlling motion of the oil cylinders. Compared with the prior art, the control system for the blade turning die has the advantages that a hook type tensioning device can steadily and synchronously move during tensioning of an upper die and a lower die, and components such as the blade turning die and the oil cylinders can be stressed uniformly and have relatively small dynamic load; therefore, the control system for the blade turning die is favorable for improvement of the manufacturing quality of a blade; and moreover, the service life of relevant components in the blade turning die and the control system can be prolonged.
Description
Technical field
The present invention relates to Machine Manufacturing Technology, be specifically related to a kind of control system of blade upset mould.In addition, a kind of take-up device with control system of this blade upset mould is also proposed.
Background technology
At present, in the spare and accessory parts production process of a lot of engineering goods, all to use mould.Therefore, in the production process of these spare and accessory parts, whether rationally use mould that the quality of production and the production cost of these spare and accessory parts are had very important influence; Production with the blade of wind power generating set is example, because blade upset mould out-of-shape, blade upset mould generally includes upper die and lower die, during matched moulds, the gap of patrix and counterdie should not surpass 4mm, and the matched moulds process should be steadily, synchronously, otherwise blade profile, performance will be adversely affected.For guaranteeing that the gap between patrix and the counterdie is in zone of reasonableness, usually adopt a plurality of coupling type take-up devices that upper die and lower die are strained, as depicted in figs. 1 and 2, this take-up device comprises hook 3 and gag lever post 2, usually hook 3 is located on the counterdie 4, gag lever post 2 is located on the patrix 1, and the hook 3 in the tension process on the counterdie 4 tangles gag lever post 2 under the effect of oil cylinder 5, and requires a plurality of hooks 3 to strain simultaneously; Yet, in actual production process, jiggly phenomenon appears in the tension action of hook 3 easily, and nonsynchronous phenomenon appears between a plurality of hooks 3 easily, this can cause the workmanship of blade not high on the one hand, also easily parts such as mould, oil cylinder 5 are caused damage on the other hand, reduce the service life of these parts.
Summary of the invention
In view of this, the present invention proposes the control system of a kind of blade upset mould, utilizes the control system of this blade upset mould can effectively promote the workmanship of blade, can prolong the service life of blade upset mould and this control system associated components simultaneously.In addition, the present invention also proposes a kind of take-up device with control system of this blade upset mould, utilizes this take-up device also can promote the workmanship of blade.
On the one hand, the present invention proposes a kind of control system of blade upset mould, comprise oil supply unit, reversal valve, fuel tank and a plurality of oil cylinder; Described oil supply unit is connected with reversal valve, and the adjustable in pressure of the hydraulic oil of described oil supply unit output; Described reversal valve links to each other with a plurality of oil cylinders, is used for the motion of the described a plurality of oil cylinders of control.
Further, the control system of described blade upset mould also comprises accumulator, pressure switch and controller, and described accumulator, pressure switch all are communicated with the rodless cavity of oil cylinder, and described pressure switch is for detection of the pressure of described oil cylinder rodless cavity; Described controller can be controlled described reversal valve and oil supply unit according to the detected pressure of described pressure switch.
Further, described oil supply unit comprises hydraulic pump and pressure-control valve; Described pressure-control valve is connected with hydraulic pump, is used for the pressure of the oil-out of the described hydraulic pump of adjusting.
Further, described oil supply unit also comprises unloader, and described unloader is connected with hydraulic pump, is used for the off-load of control hydraulic pump.
Further, described pressure-control valve is proportional pressure valve, and the import of described proportional pressure valve is connected hydraulic pump and fuel tank respectively with outlet.
Further, described reversal valve has P hydraulic fluid port, T hydraulic fluid port, A hydraulic fluid port and B hydraulic fluid port, and wherein, the P hydraulic fluid port is communicated with oil supply unit, and the T hydraulic fluid port is communicated with fuel tank, and the A hydraulic fluid port is communicated with the rodless cavity of oil cylinder, and the B hydraulic fluid port is communicated with the rod chamber of oil cylinder; When first state: the P hydraulic fluid port is communicated with the A hydraulic fluid port, and the B hydraulic fluid port is communicated with the T hydraulic fluid port; When second state: the P hydraulic fluid port is communicated with the B hydraulic fluid port, and the A hydraulic fluid port is communicated with the T hydraulic fluid port; When the third state: A hydraulic fluid port, B hydraulic fluid port and T hydraulic fluid port are communicated with.
Further, the control system of described blade upset mould also comprises check valve; Described check valve is arranged on the oil circuit between hydraulic pump and the reversal valve.
Further, the control system of described blade upset mould also comprises Pressure gauge, and described Pressure gauge is arranged on the oil circuit between hydraulic pump and the reversal valve.
Further, the control system of described blade upset mould also comprises ball valve, and the rodless cavity of described oil cylinder is connected with fuel tank through ball valve.
Further, the control system of described blade upset mould also comprises hydraulic lock, and described hydraulic lock is arranged on the oil circuit between reversal valve and the oil cylinder.
The control system of the blade upset mould that the present invention proposes comprises oil supply unit, reversal valve, fuel tank and a plurality of oil cylinder; Described oil supply unit is connected with reversal valve, and the adjustable in pressure of the hydraulic oil of described oil supply unit output; Described reversal valve links to each other with a plurality of oil cylinders, is used for the motion of the described a plurality of oil cylinders of control.When using, the piston rod of the oil cylinder of the control system of this blade upset mould is connected with the hook of take-up device, the course of work of the control system of this blade upset mould is: when tension patrix and counterdie, the first step, oil supply unit is through the hydraulic oil of reversal valve to each oil cylinder output lower pressure, the piston rod that orders about each oil cylinder slowly moves, and orders about hook and cooperate with gag lever post closely; Second goes on foot, and progressively increases the pressure of the hydraulic oil of oil supply unit output, guarantees the stressed unanimity of each oil cylinder, thereby makes a plurality of hook synchronization actions.Compared with prior art, the control system of the blade upset mould that the present invention proposes can guarantee the coupling type take-up device the tension patrix during with counterdie action more steadily, more synchronous, blade overturn parts such as mould, oil cylinder stressed more balanced, dynamic load is littler; Therefore, utilize the control system of this blade upset mould to be conducive to improve the workmanship of blade, simultaneously, be conducive to improve the service life of associated components in this blade upset mould, this control system.
On the other hand, the present invention also proposes a kind of take-up device of blade upset mould turning mould tool, comprises the control system of gag lever post, hook and above-mentioned each described blade upset mould.Can more steady, more synchronously strain the upper die and lower die of blade upset mould in view of above-mentioned control system, therefore, utilize this take-up device to be conducive to promote the workmanship of blade.
Description of drawings
The accompanying drawing that constitutes a part of the present invention is used for proposing further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of coupling type take-up device under releasing orientation in the correlation technique;
Fig. 2 is the structural representation of coupling type take-up device under tension in the correlation technique;
One of schematic diagram of the control system of the blade upset mould that Fig. 3 proposes for the specific embodiment of the invention;
Two of the schematic diagram of the control system of the blade upset mould that Fig. 4 proposes for the specific embodiment of the invention;
Three of the schematic diagram of the control system of the blade upset mould that Fig. 5 proposes for the specific embodiment of the invention;
Four of the schematic diagram of the control system of the blade upset mould that Fig. 6 proposes for the specific embodiment of the invention.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the present invention can make up mutually.Be elaborated below in conjunction with 1 to 6 pair of specific embodiments of the invention of accompanying drawing.
Fig. 1 is the structural representation of coupling type take-up device under releasing orientation in the correlation technique; Fig. 2 is the structural representation of coupling type take-up device under tension in the correlation technique; One of schematic diagram of the control system of the blade upset mould that Fig. 3 proposes for the specific embodiment of the invention; Two of the schematic diagram of the control system of the blade upset mould that Fig. 4 proposes for the specific embodiment of the invention; Three of the schematic diagram of the control system of the blade upset mould that Fig. 5 proposes for the specific embodiment of the invention; Four of the schematic diagram of the control system of the blade upset mould that Fig. 6 proposes for the specific embodiment of the invention.
As shown in Figure 3, the control system of the blade upset mould of specific embodiment of the invention proposition comprises oil supply unit 8, reversal valve 6, fuel tank 7 and a plurality of oil cylinder 5; Oil supply unit 8 is connected with reversal valve 6, and the adjustable in pressure of the hydraulic oil of oil supply unit 8 outputs; Reversal valve 6 links to each other with a plurality of oil cylinders 5, is used for the motion of a plurality of oil cylinders 5 of control.When using, the piston rod of the oil cylinder 5 of the control system of this blade upset mould is connected with the hook 3 of take-up device.Now 1 set forth the course of work of the control system of this blades upset mould to accompanying drawing 3 by reference to the accompanying drawings: at tension patrix 1 during with counterdie 4, the first step, oil supply unit 8 is through the hydraulic oil of reversal valve 6 to each oil cylinder 5 output first predetermined pressure (force value is low relatively), the piston rod that orders about each oil cylinder 5 slowly moves, and order about the hook 3 consolidations tangle gag lever post 2; Second goes on foot, and progressively increases the pressure of the hydraulic oil of oil supply unit 8 outputs, guarantees the stressed unanimity of each oil cylinder 5, thereby makes a plurality of hook 3 synchronization actions.Compared with prior art, the control system of this blade upset mould can guarantee the coupling type take-up device tension patrix 1 during with counterdie 4 action more steadily, more synchronous, parts such as blade upset mould, oil cylinder 5 stressed more balanced, dynamic load is littler; Therefore, utilize the control system of this blade upset mould to be conducive to improve the workmanship of blade, simultaneously, be conducive to improve the service life of associated components in this blade upset mould, this control system.
In technique scheme, reversal valve 6 has P hydraulic fluid port, T hydraulic fluid port, A hydraulic fluid port and B hydraulic fluid port, and wherein, the P hydraulic fluid port is communicated with oil supply unit 8, and the T hydraulic fluid port is communicated with fuel tank 7, and the A hydraulic fluid port is communicated with the rodless cavity of oil cylinder 5, and the B hydraulic fluid port is communicated with the rod chamber of oil cylinder 5; When first state: the P hydraulic fluid port is communicated with the A hydraulic fluid port, and the B hydraulic fluid port is communicated with the T hydraulic fluid port; When second state: the P hydraulic fluid port is communicated with the B hydraulic fluid port, and the A hydraulic fluid port is communicated with the T hydraulic fluid port; When the third state: A hydraulic fluid port, B hydraulic fluid port and T hydraulic fluid port are communicated with.According to above-mentioned three states as can be known, this reversal valve 6 can be three position four-way directional control valve 6, also can be other hydraulic valve that can realize this function.
In technical scheme further, the control system of blade upset mould also comprises accumulator 11, pressure switch 12 and controller, accumulator 11, pressure switch 12 all are communicated with the rodless cavity of oil cylinder 5, and pressure switch 12 is for detection of the pressure of oil cylinder 5 rodless cavities; Controller can be according to pressure switch 12 detected pressure control reversal valve 6 and oil supply units 8.By accumulator 11, pressure switch 12 and controller are set, make the control system of this blade upset mould can control the whole process of tension automatically, its operation process is: after hook 3 formula take-up devices were in tension, controller control oil supply unit 8 promoted the pressure of hydraulic oil gradually; When the pressure of oil cylinder 5 rodless cavities reached second predetermined pressure, controller was controlled oil supply unit 8 fuel cut-offs and is made reversal valve 6 be in the third state, at this moment, utilizes 11 pairs of oil cylinders of accumulator 5 to carry out pressurize; When the pressure of oil cylinder 5 rodless cavities is lower than the 3rd predetermined pressure (being equal to or slightly less than second predetermined pressure), controller is controlled oil supply unit 8 fuel feeding and is made reversal valve 6 be positioned at first state, at this moment, oil supply unit 8 is given oil cylinder 5 and accumulator 11 fuel feeding, makes oil cylinder 5 maintain operation in the pressure stable scope all the time.
In technical scheme further, the control system of blade upset mould also comprises ball valve 13, and the rodless cavity of oil cylinder 5 is connected with fuel tank 7 through ball valve 13.By between the rodless cavity of oil cylinder 5 and fuel tank 7, ball valve 13 being set, can carry out pressure release to oil cylinder 5 and accumulator 11 easily.
In technique scheme, oil supply unit 8 comprises hydraulic pump 10, pressure-control valve 9 and unloader 15; Pressure-control valve 9 is connected with hydraulic pump 10, is used for the pressure of the oil-out of regulator solution press pump 10; Unloader 15 is connected with hydraulic pump 10, is used for 10 off-loads of control hydraulic pump.The form that specifically arranges of oil supply unit 8 has multiple, specifically can be with reference to figure 4 and Fig. 5.This oil supply unit 8 is closed unloader 15 when giving oil cylinder 5 fuel feeding, at this moment, hydraulic oil enters oil cylinder 5 from oil pump through reversal valve 6; When stopping to oil cylinder 5 fuel feeding, open unloader 15, hydraulic oil is through unloader 15 direct oil sump tanks 7, thereby hydraulic pump 10 is carried out the low pressure off-load.
In technique scheme, pressure-control valve 9 can be overflow valve, also can be proportional pressure valve; Preferably, pressure-control valve 9 is proportional pressure valve, and as shown in Figure 6, the import of proportional pressure valve is connected hydraulic pump 10 and fuel tank 7 respectively with outlet; The passing ratio pressure valve can be controlled the pressure in hydraulic pump 10 exits easily.
In technical scheme further, the control system of blade upset mould also comprises check valve 17; As shown in Figure 6, check valve 17 is arranged on the oil circuit between hydraulic pump 10 and the reversal valve 6.By being set, check valve 17 can prevent effectively that hydraulic oil from refluxing.
In technical scheme further, the control system of blade upset mould also comprises Pressure gauge 16, and as shown in Figure 6, Pressure gauge 16 is arranged on the oil circuit between hydraulic pump 10 and the reversal valve 6.By the oil circuit between hydraulic pump 10 and reversal valve 6 Pressure gauge 16 is set, can accurately measures the pressure of the hydraulic oil of oil supply unit 8 outputs.
In technical scheme further, the control system of blade upset mould also comprises hydraulic lock 14, and as shown in Figure 6, hydraulic lock 14 is arranged on the oil circuit between reversal valve 6 and the oil cylinder 5.By hydraulic lock 14 is set, can effectively reduce the leakage of oil of hydraulic jack 5.
Certainly, in order to clean hydraulic oil, 18 pairs of hydraulic oil of oil filter can be set at the oil circuit of oil sump tank filter.
On the other hand, the specific embodiment of the invention also proposes the take-up device of a kind of blade upset mould, comprises gag lever post 2, hook 3 and above-mentioned each the control system of blade upset mould.Can more steady, more synchronously strain patrix 1 and the counterdie 4 of blade upset mould in view of the control system of above-mentioned blade upset mould, therefore, utilize this take-up device to be conducive to promote the workmanship of blade.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the control system of a blade upset mould is characterized in that, comprises oil supply unit (8), reversal valve (6), fuel tank (7) and a plurality of oil cylinder (5); Described oil supply unit (8) is connected with reversal valve (6), and the adjustable in pressure of the hydraulic oil of described oil supply unit (8) output; Described reversal valve (6) links to each other with a plurality of oil cylinders (5), is used for the motion of the described a plurality of oil cylinders of control (5).
2. the control system of blade according to claim 1 upset mould, it is characterized in that, also comprise accumulator (11), pressure switch (12) and controller, described accumulator (11), pressure switch (12) all are communicated with the rodless cavity of oil cylinder (5), and described pressure switch (12) is for detection of the pressure of described oil cylinder (5) rodless cavity; Described controller can be controlled described reversal valve (6) and oil supply unit (8) according to the detected pressure of described pressure switch (12).
3. the control system of blade upset mould according to claim 2 is characterized in that described oil supply unit (8) comprises hydraulic pump (10) and pressure-control valve (9); Described pressure-control valve (9) is connected with hydraulic pump (10), is used for the pressure of the oil-out of the described hydraulic pump of adjusting (10).
4. the control system of blade upset mould according to claim 3 is characterized in that described oil supply unit (8) also comprises unloader (15), and described unloader (15) is connected with hydraulic pump (10), is used for the off-load of control hydraulic pump (10).
5. the control system of blade upset mould according to claim 4 is characterized in that described pressure-control valve (9) is proportional pressure valve, and the import of described proportional pressure valve is connected hydraulic pump (10) and fuel tank (7) respectively with outlet.
6. the control system of blade according to claim 5 upset mould, it is characterized in that, described reversal valve (6) has P hydraulic fluid port, T hydraulic fluid port, A hydraulic fluid port and B hydraulic fluid port, wherein, the P hydraulic fluid port is communicated with oil supply unit (8), the T hydraulic fluid port is communicated with fuel tank (7), and the A hydraulic fluid port is communicated with the rodless cavity of oil cylinder (5), and the B hydraulic fluid port is communicated with the rod chamber of oil cylinder (5);
When first state: the P hydraulic fluid port is communicated with the A hydraulic fluid port, and the B hydraulic fluid port is communicated with the T hydraulic fluid port;
When second state: the P hydraulic fluid port is communicated with the B hydraulic fluid port, and the A hydraulic fluid port is communicated with the T hydraulic fluid port;
When the third state: A hydraulic fluid port, B hydraulic fluid port and T hydraulic fluid port are communicated with.
7. according to the control system of each described blade upset mould of claim 3 to 6, it is characterized in that, also comprise check valve (17); Described check valve (17) is arranged on the oil circuit between hydraulic pump (10) and the reversal valve (6).
8. according to the control system of each described blade upset mould of claim 3 to 6, it is characterized in that, also comprise Pressure gauge (16), described Pressure gauge (16) is arranged on the oil circuit between hydraulic pump (10) and the reversal valve (6).
9. according to the control system of each described blade upset mould of claim 1 to 6, it is characterized in that also comprise ball valve (13), the rodless cavity of described oil cylinder (5) is connected with fuel tank (7) through ball valve (13).
10. according to the control system of each described blade upset mould of claim 1 to 6, it is characterized in that, also comprise hydraulic lock (14), described hydraulic lock (14) is arranged on the oil circuit between reversal valve (6) and the oil cylinder (5).
11. the take-up device of a blade upset mould comprises gag lever post (2) and hook (3), it is characterized in that, also comprises the control system of each described blade upset mould of claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100856686A CN103192466A (en) | 2013-03-18 | 2013-03-18 | Control system for blade turning die and a tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100856686A CN103192466A (en) | 2013-03-18 | 2013-03-18 | Control system for blade turning die and a tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103192466A true CN103192466A (en) | 2013-07-10 |
Family
ID=48715370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100856686A Pending CN103192466A (en) | 2013-03-18 | 2013-03-18 | Control system for blade turning die and a tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103192466A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106227138A (en) * | 2016-07-25 | 2016-12-14 | 三重型能源装备有限公司 | Fan blade mould tilting device synchronous control system and method |
| CN106228765A (en) * | 2016-08-30 | 2016-12-14 | 洛阳双瑞风电叶片有限公司 | A kind of wind-powered blade mold snap close intelligent monitoring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201225344Y (en) * | 2008-05-20 | 2009-04-22 | 上海建工（集团）总公司 | Building construction mould climbing jacking synchronous control system |
| CN201989265U (en) * | 2011-02-24 | 2011-09-28 | 三一电气有限责任公司 | Fan blade mold turnover device and hydraulic system thereof |
| CN202006534U (en) * | 2011-02-22 | 2011-10-12 | 三一电气有限责任公司 | Die for manufacturing blades of wind generating sets and tension device of die |
| CN202690347U (en) * | 2012-05-30 | 2013-01-23 | 三一重工股份有限公司 | Concrete pump swinging cylinder hydraulic system and concrete pumping device |
-
2013
- 2013-03-18 CN CN2013100856686A patent/CN103192466A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201225344Y (en) * | 2008-05-20 | 2009-04-22 | 上海建工（集团）总公司 | Building construction mould climbing jacking synchronous control system |
| CN202006534U (en) * | 2011-02-22 | 2011-10-12 | 三一电气有限责任公司 | Die for manufacturing blades of wind generating sets and tension device of die |
| CN201989265U (en) * | 2011-02-24 | 2011-09-28 | 三一电气有限责任公司 | Fan blade mold turnover device and hydraulic system thereof |
| CN202690347U (en) * | 2012-05-30 | 2013-01-23 | 三一重工股份有限公司 | Concrete pump swinging cylinder hydraulic system and concrete pumping device |
Non-Patent Citations (2)
| Title |
|---|
| 市川常雄，日比昭: "《液压工程学 第一版》", 31 December 1984 * |
| 章宏甲: "《金属切削机床液压传动 第一版》", 31 December 1985 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106227138A (en) * | 2016-07-25 | 2016-12-14 | 三重型能源装备有限公司 | Fan blade mould tilting device synchronous control system and method |
| CN106227138B (en) * | 2016-07-25 | 2019-07-12 | 三一重型能源装备有限公司 | Fan blade mould tilting device synchronous control system and method |
| CN106228765A (en) * | 2016-08-30 | 2016-12-14 | 洛阳双瑞风电叶片有限公司 | A kind of wind-powered blade mold snap close intelligent monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108150468B (en) | Hydraulic press hydraulic system capable of quickly and stably realizing local loading | |
| CN103192466A (en) | Control system for blade turning die and a tensioning device | |
| CN105538625A (en) | Injection molding machine synchronizing system and oil way control method thereof | |
| CN101758088A (en) | Cooling-bed hydraulic stepping and tread control device and control method thereof | |
| KR20090088930A (en) | Molding machine | |
| CN102179950A (en) | Novel oil press | |
| CN102336030A (en) | Sliding block deviation correction mechanism of hydraulic press | |
| CN205639153U (en) | Supercharging device , hydraulic system and mechanical equipment | |
| CN202116932U (en) | Hydraulic system of pulp package pressing machine | |
| CN208348187U (en) | A kind of hydraulic press hydraulic control system equipped with synchronized cylinder | |
| CN100577400C (en) | Controllable type rolling machine hydraulic system | |
| CN204003680U (en) | Novel master cylinder hydraulic circuit system | |
| CN204054552U (en) | Two plate hydraulic injection molding machine normal pressures, supercharging, high-voltage lock mould loop | |
| CN205173098U (en) | Heavy load lifting machine hydraulic control return circuit | |
| CN105522749A (en) | Sub-manifold block with adjustable pressing speed of hydraulic machine and speed adjusting method | |
| CN203604347U (en) | Hydraulic control system of pressing part of paper machine | |
| CN207921003U (en) | Counter balance pocket presses serial oil cylinders | |
| CN203155712U (en) | Hydraulic screw-down system of double-roller type roll casting machine | |
| CN204942119U (en) | Hydraulic synchronization closed-loop control device in hydraulic three-roller plate roll | |
| CN207673636U (en) | A kind of hydraulic system of intelligence multiface upsetting machine | |
| CN215521426U (en) | Hydraulic system with local pressurization and pressure maintaining functions and die casting machine | |
| CN206140594U (en) | Guide rail interval micromatic setting | |
| CN201143578Y (en) | Hydraulic circuit for preventing slide of saw bow | |
| CN203991956U (en) | The movable apical cap Level tune of forcing press control system | |
| CN202726047U (en) | Isostatic pressing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |