CN108194446A - Multi-station hydraulic signal controls formula oil circuit conversion link - Google Patents
Multi-station hydraulic signal controls formula oil circuit conversion link Download PDFInfo
- Publication number
- CN108194446A CN108194446A CN201810148437.8A CN201810148437A CN108194446A CN 108194446 A CN108194446 A CN 108194446A CN 201810148437 A CN201810148437 A CN 201810148437A CN 108194446 A CN108194446 A CN 108194446A
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- Prior art keywords
- switch
- hydraulic
- valve
- oil
- switch valve
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Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 74
- 239000000446 fuel Substances 0.000 claims abstract description 44
- 230000009466 transformation Effects 0.000 claims abstract description 33
- 230000011664 signaling Effects 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 95
- 239000010720 hydraulic oil Substances 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003462 Bender reaction Methods 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
- F15B2211/783—Sequential control
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of multi-station hydraulic signals to control formula oil circuit conversion link, including several hydraulic cylinders, Remote Hydraulic signaling switch is provided on the piston rod stroke of hydraulic cylinder, a fuel path switch conversion control device control cylinder action is respectively arranged on each hydraulic cylinder, the fuel path switch conversion control device includes piggybacking switch valve and reversal valve, multiple switch valve state transformation interface, the delivery outlet connecting valve valve state transformation interface of Remote Hydraulic signaling switch are provided on piggybacking switch valve.The oil circuit conversion link of the present invention is based on fuel path switch conversion control device, by setting the multiple switch valve state transformation interface being connect with Remote Hydraulic signaling switch delivery outlet on fuel path switch conversion control device, the situation of different station and the action of multistation driving switch spool can be appeared in, so as to make to realize more complicated sequence of movement between multiple hydraulic cylinders.
Description
Technical field
The present invention relates to hydraulic control system field, particularly a kind of multi-station hydraulic signal control formula oil circuit conversion linkage
Device.
Background technology
The patent of invention of applicant's earlier application《A kind of linkage based on multiway hydraulic control valve》(Patent No.
201310413960.6) a kind of linkage applied on anglebender is disclosed, the linkage is with multipath hydraulic control
Based on valve processed, multiway hydraulic control valve has conversion spool and reversing valve core, and different hydraulic cylinders can be switched and carry out fuel feeding
And control hydraulic cylinder commutation, it can realize that the reinforcing bar of hydraulic control is bent automatically.But above-mentioned multiway hydraulic control valve is being controlled
During hydraulic cylinder action processed, it is necessary to which the switching of oil cylinder could be carried out (including commutation) by completing the entire motion flow of oil cylinder, it is impossible to
Coping with some has the sequence of movement of hydraulic cylinder the occasion of more complicated requirement.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of multi-station hydraulic signal control formula oil circuit conversion linkage dresses
It puts, can make to realize more complicated sequence of movement between multiple hydraulic cylinders, promote its using effect, while increase it using model
It encloses.
The technical solution adopted in the present invention is：
Multi-station hydraulic signal controls formula oil circuit conversion link, which is characterized in that including several hydraulic cylinders, hydraulic pressure
Remote Hydraulic signaling switch is provided on the piston rod stroke of oil cylinder, a fuel path switch is respectively arranged on each hydraulic cylinder
Conversion control device control cylinder acts,
The fuel path switch conversion control device includes piggybacking switch valve and reversal valve, the piggybacking switch valve and reversal valve
Valve chamber connected by the first oil duct,
Switch valve core is provided in the valve chamber of the piggybacking switch valve, hydraulic oil inlet and liquid are provided on piggybacking switch valve
Pressure oil exports, the hydraulic oil outlet of the hydraulic oil inlet connection oil pump or upper level fuel path switch conversion control device, described
Hydraulic oil outlet connects the hydraulic oil inlet of fuel tank or next stage fuel path switch conversion control device, and switch valve core action makes hydraulic pressure
Oil inlet switches connection between the first oil duct and hydraulic oil outlet,
Reversing valve core is provided in the valve chamber of the reversal valve, A oil duct junctions, B oil duct junctions and one are provided on reversal valve
A above unloading port, A oil duct junctions and B oil duct junctions connect two interfaces of hydraulic cylinder respectively, and reversing valve core action makes first
Oil duct switches connection between A oil duct junctions and B oil duct junctions, during any one first oil duct of connection of A oil duct junctions or B oil duct junctions,
Another connection unloading port,
Multiple switch valve state transformation interface, the switch valve state transformation interface are additionally provided on the piggybacking switch valve
It is arranged on switch valve core front and rear, the delivery outlet connecting valve valve state transformation interface of the Remote Hydraulic signaling switch.
The oil circuit conversion link of the present invention is converted based on fuel path switch conversion control device by fuel path switch
The multiple switch valve state transformation interface being connect on control device with Remote Hydraulic signaling switch delivery outlet, believes according to Remote Hydraulic
Number switch installation site, can appear in different station and multistation driving switch spool action situation, it is more so as to make
More complicated sequence of movement is realized between a hydraulic cylinder.
As a further improvement of the above technical scheme, push rod is provided in the valve chamber of the piggybacking switch valve, it is described to push away
Bar is located between two adjacent switch valve state transformation interfaces.The hydraulic fluid entered from switch valve state transformation interface can be with
Push rod is first pushed, then is acted by push rod pull switch spool.Multistation control can be easily realized using push rod, and push rod can be with
Switch valve core detaches, and reduces the production difficulty of switch valve core.
As a further improvement of the above technical scheme, the push rod is wholely set with switch valve core, reduces accessory.
As a further improvement of the above technical scheme, reversal valve state transformation interface is provided on the reversal valve, from
The hydraulic fluid forces reversing valve core action that reversal valve state transformation interface enters.
As a further improvement of the above technical scheme, the piggybacking switch valve and reversal valve are wholely set.
As a further improvement of the above technical scheme, the fuel path switch conversion control device includes single-way linkage arm,
Shaft is provided in the middle part of the single-way linkage arm, single-way linkage arm both ends correspond to the stretching of switch valve core and reversing valve core respectively
End.
As a further improvement of the above technical scheme, there are two long-range for setting on the piston rod stroke of each hydraulic cylinder
Hydraulic pressure signal switchs, and the Remote Hydraulic signaling switch is separately positioned on the both ends of piston rod stroke.
The beneficial effects of the invention are as follows：
The prior art is compared, multi-station hydraulic signal control formula oil circuit conversion link structure provided by the invention is simpler
It is single, and can make to realize more complicated sequence of movement between multiple hydraulic cylinders, its using effect is promoted, while increase it and be applicable in
Range.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a kind of internal oil passages schematic diagram of fuel path switch conversion control device.
Fig. 2 is the dimensional structure diagram of the fuel path switch conversion control device of Fig. 1.
Fig. 3 is a kind of connection diagram of currently preferred oil circuit conversion link.
Fig. 4 to Figure 11 is each working state schematic representation of oil circuit conversion link in Fig. 3.
Figure 12 is the oil circuit schematic diagram of the oil circuit conversion link applied to five elbow stirrup benders.
Figure 13 is the structure diagram of the stirrup bender of Figure 12.
Figure 14 is the internal oil passages schematic diagram of another fuel path switch conversion control device.
Specific embodiment
Embodiment the present invention provides multi-station hydraulic signal control formula oil circuit conversion link illustrates.
With reference to Fig. 1, Fig. 2, oil circuit conversion link of the invention is based on fuel path switch conversion control device, Fig. 1
A kind of preferred embodiment of fuel path switch conversion control device is provided with Fig. 2, including piggybacking switch valve 1 and reversal valve 2, piggybacking
Switch valve 1 is connected with the valve chamber of reversal valve 2 by the first oil duct 3, it is preferred that the piggybacking switch valve 1 and reversal valve 2 are integrally set
It puts.Switch valve core 11 is provided in the valve chamber of the piggybacking switch valve 1,12 He of hydraulic oil inlet is provided on piggybacking switch valve 1
Hydraulic oil outlet 13, the action of switch valve core 11 make hydraulic oil inlet 12 switch company between the first oil duct 3 and hydraulic oil outlet 13
It connects.Reversing valve core 21 is provided in the valve chamber of the reversal valve 2, A oil duct junctions, B oil duct junctions and one are provided on reversal valve 2
Above unloading port O, A oil duct junctions and B oil duct junctions connect two interfaces of hydraulic cylinder respectively, and the action of reversing valve core 21 makes first
Oil duct 3 switches connection between A oil duct junctions and B oil duct junctions, during any one first oil duct of connection of A oil duct junctions or B oil duct junctions,
Another connection unloading port O.
In the present embodiment, it is also set up on the piggybacking switch valve 1 there are three switch valve state transformation interface 14,15,16,
Wherein first switch valve state transformation interface 14 is arranged on 11 forepart of switch valve core, second switch valve state transformation interface 15 and
Three switch valve state transformation interfaces 16 are arranged on 11 rear portion of switch valve core.Further, 15 He of second switch valve state transformation interface
Push rod 17 is provided in valve chamber between third switch valve state transformation interface 16, is stayed between the push rod 17 and switch valve core 11
There is the gap of connection second switch valve state transformation interface 15.In the present embodiment, the push rod 17 and switch valve core 11 separate
Setting, in other embodiments, push rod 17 can be also integrally disposed upon in switch valve core 11.From first switch valve state transformation interface
14 hydraulic fluids entered can be retracted with pull switch spool 11, the flow of pressurized entered from second switch valve state transformation interface 15
Body can be stretched out with pull switch spool 11, and the hydraulic fluid entered from third switch valve state transformation interface 16 first pushes
Bar, then acted and stretched out by push rod pull switch spool.It, can be with by multiple switch valve state transformation interface 14,15,16 above
It realizes the action of multistation controlling switch valve core 11, is controlled so as to fulfill more complicated oil circuit.
Further, reversal valve state transformation interface 22 is provided on the reversal valve 2, from reversal valve state transformation interface 22
The hydraulic fluid forces reversing valve core 21 of entrance acts.
Further, single-way linkage arm 4, the single-way linkage arm 4 are additionally provided on the fuel path switch conversion control device
Middle part is provided with shaft 41, and 4 both ends of single-way linkage arm correspond to switch valve core 11 and reversing valve core 21 respectively.When switch valve core 11 is stretched
Ejection single-way linkage arm 4 rotates single-way linkage arm 4 when going out, and ejection reversing valve core 21 retracts the shape so as to change reversing valve core 21
State realizes linkage, can realize the linkage between piggybacking switch valve 1 and reversal valve 2 by single-way linkage arm 4, reduce the company of oil pipe
It connects, simplifies apparatus structure.
With reference to Fig. 3, Fig. 3 provides a kind of multi-station hydraulic signal control formula oil of simple version using two hydraulic cylinders
Road conversion link, for illustrating the course of work of the present invention.The oil circuit conversion link includes the first hydraulic cylinder
101 and second hydraulic cylinder 105, wherein there are two Remote Hydraulic signals for setting on the piston rod stroke of the first hydraulic cylinder 101
102,103 are switched, is also provided on the piston rod stroke of the second hydraulic cylinder 105 there are two Remote Hydraulic signaling switch 106,107,
Second hydraulic cylinder 105 connects the fuel path switch conversion control device 108 of the present embodiment, and the connection of the first hydraulic cylinder 1001 simplifies
The switch conversion control device 104 of version, oil circuit connection is with reference to Fig. 3.Wherein the hydraulic oil of fuel path switch conversion control device 108 into
The hydraulic oil outlet of mouth connection oil pump or upper level fuel path switch conversion control device, fuel path switch conversion control device 108
Hydraulic oil outlet connects the hydraulic oil inlet or fuel tank of next stage fuel path switch conversion control device, and oil circuit is controlled by switch valve core
The oil circuit trend of switch conversion control device 108, by reversal valve to 105 fuel feeding of the second hydraulic cylinder or piggybacking of connection
Hydraulic oil outlet carries out fuel feeding to switch conversion control device 104；Three switches of the fuel path switch conversion control device 108
Valve state transformation interface connects three Remote Hydraulic signaling switches respectively, can change switch valve core in the case of different station
State.
It is the schematic diagram of each working condition of oil circuit conversion link shown in Fig. 4 to Figure 11 with reference to Fig. 4 to Figure 11.Such as
Shown in Fig. 4, after oil circuit conversion link starts, oil pump is by fuel path switch conversion control device 108 first to the second hydraulic oil
105 fuel feeding of cylinder stretches out the piston rod of the second hydraulic cylinder 105.As shown in figure 5, the piston triggering of the second hydraulic cylinder 105 is remote
Journey hydraulic pressure signal switch 106, hydraulic oil is reached by Remote Hydraulic signaling switch 106 is located at fuel path switch conversion control device
The switch valve state transformation interface at 108 rear portions, changes the state of switch valve core, and passes through the commutation of 4 synchronous change of single-way linkage arm
The state of spool further changes the switch of switch conversion control device 104 by the hydraulic oil of Remote Hydraulic signaling switch 106
Spool state.As shown in fig. 6, oil pump piggybacking fuel path switch conversion control device 108 is to 104 fuel feeding of switch conversion control device,
The action of the first hydraulic cylinder 101 is driven to stretch out piston rod.Fig. 7 and Fig. 8 show the first hydraulic cylinder 101 triggering Remote Hydraulic
Signaling switch 102 makes the reversal valve of switch conversion control device 104 change state, 101 commutation action of the first hydraulic cylinder.Fig. 9
After showing the first hydraulic cylinder 101 triggering Remote Hydraulic signaling switch 103, switch conversion control device 104 and oil circuit are opened
The switch valve for closing conversion control device 108 changes state.Figure 10 show 105 commutation action of the second hydraulic cylinder and is resetted.
Figure 11 show triggering Remote Hydraulic signaling switch 107 after the second hydraulic cylinder 105 resets, and changes fuel path switch conversion control again
The switch valve state of device 108 processed, hydraulic oil can piggybacking fuel path switch conversion control device 108 and switch conversion controls successively
Device 104 carries out emptying or carries out fuel feeding to the switch conversion control device of next stage again.
It is shown by the working condition shown in Fig. 4 to Figure 11, multi-station hydraulic signal of the invention control formula oil circuit conversion
Linkage controls oil circuit by fuel path switch conversion control device, can make to realize more between multiple hydraulic cylinders
Complicated sequence of movement after the piston rod extending action of the second hydraulic cylinder 105 as shown, according to circumstances can be controlled first next
Grade cylinder action, then just resets the piston rod of the second hydraulic cylinder 105.Multipath hydraulic control in compared with prior art
Valve processed, the fuel path switch conversion control device structure that uses of the present invention is simpler, realization it is with better function, have wider
Application range.And the setting of wherein single-way linkage arm can reduce the connection of oil pipe as far as possible, be further simplified the structure of complete machine.
Above-mentioned Fig. 3 to Figure 11 only shows one of embodiment of the present invention, it may also be possible to apply the invention for using liquid
Pressure control system is carried out on the mechanical equipment of complex control, anglebender as shown in Figure 12 and Figure 13, in most of work
Occasion may replace expensive and relatively low stability electric-controlled mechanical equipment.As shown in figure 12, it is converted using multiple fuel path switchs
Control device is, it can be achieved that the action of the complicated sequence of five elbows, so as to which anglebender be made to be automatically performed all of reinforcing steel bar hoop bending
Action.
With reference to Figure 14, the present invention also provides another fuel path switch conversion control devices, are opened including integrated piggybacking
It closes valve 1 and reversal valve 2, piggybacking switch valve 1 is connected with the valve chamber of reversal valve 2 by the first oil duct 3.The piggybacking switch valve 1
Switch valve core 11 is provided in valve chamber, hydraulic oil inlet 12 and hydraulic oil outlet 13, switch valve core are provided on piggybacking switch valve 1
11 actions make hydraulic oil inlet 12 switch connection between the first oil duct 3 and hydraulic oil outlet 13.In the valve chamber of the reversal valve 2
Reversing valve core 21 is provided with, A oil duct junctions, B oil duct junctions and more than one unloading port O, A oil duct junctions are provided on reversal valve 2
Connect two interfaces of hydraulic cylinder respectively with B oil duct junctions, the action of reversing valve core 21 makes the first oil duct 3 in A oil duct junctions and B oil ducts
During any one first oil duct of connection of switching connection between mouthful, A oil duct junctions or B oil duct junctions, another connection unloading port O.This
Difference lies in also set up that there are five switch valve state transformation interfaces on the piggybacking switch valve 1 for embodiment and first embodiment
14th, 14 ', 15,15 ', 16 and two push rods 17,17 ', two push rods 17,17 ' are distributed in multistage, and the oil circuit shown in Figure 14 is opened
It closes conversion control device and compares fuel path switch conversion control device shown in FIG. 1, it can be achieved that the control of more multistation, so as to coordinate
Oil circuit conversion link realizes more powerful function.
The preferred embodiments of the present invention are these are only, as long as realizing the technical side of the object of the invention with essentially identical means
Case is belonged within protection scope of the present invention.
Claims (7)
1. multi-station hydraulic signal controls formula oil circuit conversion link, which is characterized in that including several hydraulic cylinders, hydraulic oil
Remote Hydraulic signaling switch is provided on the piston rod stroke of cylinder, a fuel path switch is respectively arranged on each hydraulic cylinder and is turned
The action of control device control cylinder is changed,
The fuel path switch conversion control device includes the valve of piggybacking switch valve and reversal valve, the piggybacking switch valve and reversal valve
Chamber is connected by the first oil duct,
Switch valve core is provided in the valve chamber of the piggybacking switch valve, hydraulic oil inlet and hydraulic oil are provided on piggybacking switch valve
The hydraulic oil outlet of outlet, the hydraulic oil inlet connection oil pump or upper level fuel path switch conversion control device, the hydraulic pressure
Oil export connects the hydraulic oil inlet of fuel tank or next stage fuel path switch conversion control device, switch valve core action make hydraulic oil into
Mouth switches connection between the first oil duct and hydraulic oil outlet,
Reversing valve core is provided in the valve chamber of the reversal valve, be provided on reversal valve A oil duct junctions, B oil duct junctions and one with
On unloading port, A oil duct junctions and B oil duct junctions connect two interfaces of hydraulic cylinder respectively, and reversing valve core action makes the first oil duct
It is another during any one first oil duct of connection of the switching connection between A oil duct junctions and B oil duct junctions, A oil duct junctions or B oil duct junctions
A connection unloading port,
Multiple switch valve state transformation interface, the switch valve state transformation interface setting are additionally provided on the piggybacking switch valve
In switch valve core front and rear, the delivery outlet connecting valve valve state transformation interface of the Remote Hydraulic signaling switch.
2. multi-station hydraulic signal according to claim 1 controls formula oil circuit conversion link, it is characterised in that：It is described
Push rod is provided in the valve chamber of piggybacking switch valve, the push rod is located between two adjacent switch valve state transformation interfaces.
3. multi-station hydraulic signal according to claim 2 controls formula oil circuit conversion link, it is characterised in that：It is described
Push rod is wholely set with switch valve core.
4. multi-station hydraulic signal according to claim 1 controls formula oil circuit conversion link, it is characterised in that：It is described
Reversal valve state transformation interface is provided on reversal valve, the hydraulic fluid forces reversal valve entered from reversal valve state transformation interface
Core acts.
5. multi-station hydraulic signal according to claim 1 controls formula oil circuit conversion link, it is characterised in that：It is described
Piggybacking switch valve and reversal valve are wholely set.
6. multi-station hydraulic signal according to claim 1 controls formula oil circuit conversion link, it is characterised in that：It is described
Fuel path switch conversion control device includes single-way linkage arm, and shaft, single-way linkage arm two are provided in the middle part of the single-way linkage arm
End corresponds to the external part of switch valve core and reversing valve core respectively.
7. multi-station hydraulic signal according to claim 1 controls formula oil circuit conversion link, it is characterised in that：Each
Remote Hydraulic signaling switch, the Remote Hydraulic signaling switch to be set respectively there are two settings on the piston rod stroke of hydraulic cylinder
It puts at the both ends of piston rod stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148437.8A CN108194446B (en) | 2018-02-13 | 2018-02-13 | Multi-station hydraulic signal control type oil way conversion linkage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810148437.8A CN108194446B (en) | 2018-02-13 | 2018-02-13 | Multi-station hydraulic signal control type oil way conversion linkage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108194446A true CN108194446A (en) | 2018-06-22 |
| CN108194446B CN108194446B (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810148437.8A Active CN108194446B (en) | 2018-02-13 | 2018-02-13 | Multi-station hydraulic signal control type oil way conversion linkage device |
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| Country | Link |
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| CN (1) | CN108194446B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114681994A (en) * | 2020-12-31 | 2022-07-01 | 台湾朴致股份有限公司 | Filter device and disassembling method thereof |
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| CN206647335U (en) * | 2017-02-16 | 2017-11-17 | 冯广建 | A kind of hydraulic control system of Stroke Control |
| CN107387473A (en) * | 2017-08-16 | 2017-11-24 | 冯广建 | Tandem piggybacking formula multipath hydraulic control device |
| CN107457334A (en) * | 2016-06-03 | 2017-12-12 | 冯广建 | Fluid pressure type wire rod automatic gauging cutting mechanism |
| CN208010687U (en) * | 2018-02-13 | 2018-10-26 | 冯广建 | Multi-station hydraulic signal controls formula oil circuit conversion link |
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2018
- 2018-02-13 CN CN201810148437.8A patent/CN108194446B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760312Y (en) * | 2004-11-10 | 2006-02-22 | 冯广建 | A combination valve with knocking type linkage for hydraulic bending machine |
| CN102620010A (en) * | 2011-01-31 | 2012-08-01 | 江苏正本净化节水科技实业有限公司 | Two-position multi-ported valve |
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| CN107457334A (en) * | 2016-06-03 | 2017-12-12 | 冯广建 | Fluid pressure type wire rod automatic gauging cutting mechanism |
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| CN108194446B (en) | 2024-03-19 |
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