CN106337846B - The pile press machine clip pile hydraulic system and control method and clip pile sequence control valve of achievable sequence clip pile - Google Patents
The pile press machine clip pile hydraulic system and control method and clip pile sequence control valve of achievable sequence clip pile Download PDFInfo
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- CN106337846B CN106337846B CN201610890308.7A CN201610890308A CN106337846B CN 106337846 B CN106337846 B CN 106337846B CN 201610890308 A CN201610890308 A CN 201610890308A CN 106337846 B CN106337846 B CN 106337846B
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
A kind of the pile press machine clip pile hydraulic system and clip pile sequence control valve of achievable sequence clip pile, including clip pile sequence control valve, the clip pile sequence control valve are equipped with P mouthfuls of hydraulic fluid port, A mouthfuls, B mouthfuls, K1 mouthfuls of K mouthfuls of control mouth and control mouth, wherein：P mouthfuls are connected to K1 mouthfuls in inside；P mouthfuls are connected to by pipeline with reversal valve high pressure transformation chamber hydraulic fluid port when clip pile state by pipeline and hydraulic control one-way valve forward direction outlet, hydraulic control one-way valve forward direction entrance；A mouthfuls are connected to by pipeline with the big chamber of oil cylinder for the unilateral clip pile oil cylinder group for controlling unilateral moving jaw；B mouthfuls are connected to by pipeline with the big chamber of oil cylinder of the bilateral clip pile oil cylinder group of control bilateral activities jaw；K mouthfuls are connected to by pipeline with reversal valve oil return transformation chamber hydraulic fluid port when clip pile state and all small chambers of clip pile oil cylinder.The present invention on clip pile oil circuit by installing clip pile sequence control valve additional, and realization sequence clip pile solves the problems, such as unilateral fixation, the clip pile frame mode of three side moving jaws is easy folder bad stake.
Description
Technical field
The present invention relates to a kind of pile press machine clip pile hydraulic systems of achievable sequence clip pile and control method and clip pile sequence
Control valve.
Background technology
Hydraulic static pile pressing machine is a kind of construction of prefabricated piles machinery with China's characteristic.Its operation principle is：In hydraulic pressure
Under force effect, piling oil cylinder acts on pile driving pressure on pile clamping box, then pile driving pressure is transmitted to prefabricated pile via pile-clamp, makes
Prefabricated pile can overcome soil resistance and insert into stratum.Pile holding mechanism realizes clip pile and transmits the function of pile driving pressure, and performance is to pressure
Quality of pile has significant impact.
Present clip pile machine includes four side moving jaw formula Pile holding mechanisms, double-side fastening jaw type Pile holding mechanism and unilateral fixation
Jaw type Pile holding mechanism, four side moving jaw formula Pile holding mechanism flexibilities are too big, and to stake difficulty, and production cost is higher.And it is double
Side regular jaw formula Pile holding mechanism is tight by pile holder there are side jaw and the moving jaw of the other side will stake when pressing from both sides square pile
Push the process of regular jaw to, easily by stake damaged surfaces.Unilateral regular jaw formula Pile holding mechanism has cost relatively low, flexible suitable
The advantages that middle, comprehensive performance are preferable.But existing unilateral regular jaw formula Pile holding mechanism is in clip pile, due to each clip pile oil cylinder
The manufacture of itself and rigging error, the movement of pile-clamp is simultaneously asynchronous, bilateral activities jaw easily occurs by stake edgexAxis direction pushes away
Go out clip pile center, when unilateral moving jaw clip pile again, stake is caused to be destroyed because of local pressure.Therefore sequence how is realized
Clip pile, ensure clip pile it is reliable and stable be our urgent problems to be solved.
Invention content
It is reliable and stable that the present invention provides a kind of at low cost, good combination property, clip pile in view of the deficiencies of the prior art
The pile press machine clip pile hydraulic system and control method and clip pile sequence control valve of a kind of achievable sequence clip pile.
The present invention adopts the following technical scheme that realization：A kind of pile press machine clip pile hydraulic system of achievable sequence clip pile, institute
It includes valve body 14, spool 20, first end cover 15, second end cover 23, first throttle adjusting rod 18, the to state clip pile sequence control valve 13
Two flow restriction control bars 22 and resetting spring 19, the clip pile sequence control valve 13 are equipped with P mouthfuls of hydraulic fluid port, A mouthfuls, B mouthfuls, K mouthfuls of control mouth
With K1 mouthfuls of control mouth, wherein P mouthfuls is connected to K1 mouthfuls in the inside of the clip pile sequence control valve 13；P mouthfuls by fluid pressure line with
The positive outlet of hydraulic control one-way valve 12, the positive entrance of hydraulic control one-way valve 12 by fluid pressure line with clip pile state when commutate
The high pressure transformation chamber hydraulic fluid port of valve 10 is connected to；A mouthfuls pass through fluid pressure line and the unilateral clip pile oil cylinder group 25 for controlling unilateral moving jaw
Oil cylinder big chamber connection；The B mouthfuls of big chambers of oil cylinder by fluid pressure line and the bilateral clip pile oil cylinder group 26 of control bilateral activities jaw
It communicates；K mouthfuls by fluid pressure line and when clip pile state the oil return transformation chamber hydraulic fluid port of reversal valve 10 and unilateral clip pile oil cylinder group 25 and
The small chamber connection of oil cylinder of bilateral clip pile oil cylinder group 26；
The spool 20 slides in valve body 14, by controlling A mouthfuls and B mouthfuls of opening degree sizes, realizes suitable to cylinder movement
The control of sequence；It is provided with K mouthfuls of control mouth in the first end cover 15 and places the duct of first throttle adjusting rod 18, second end cover
It is provided with the duct of installation resetting spring and adjusting knob on 23, but does not open control mouth；Control mouth K1 is provided with inside the spool 20
Mouth is communicated with right side control oil pocket；The resetting spring 19 is located at spool both ends, and the first throttle adjusting rod 18 is for adjusting
The movement travel of spool 20 to the left, to which control is when spool 20 is located at left end, B mouthfuls of formation restriction sizes；Second throttling
Adjusting rod 22 can adjust the movement travel of spool 20 to the right, and to which control is when spool is located at right end, A mouthfuls of formation restrictions are big
It is small.
A kind of control method of achievable sequence clip pile, when the P mouths of the clip pile sequence control valve are with K mouthfuls of logical oil returns, institute
It states clip pile sequence control valve and is in middle position state, P mouthfuls at this time, A mouthfuls, B mouthfuls of open connections under action of reset spring；
When reversal valve is in left position working condition, P mouthfuls of logical high pressure oils, K mouthfuls of logical oil returns, under K1 mouthfuls of pressure oil effect
Clip pile sequence control valve is in right position working condition, at this time P mouthfuls with A mouthfuls it is unblocked be connected to, P mouthfuls with B mouthful then by restriction
It is connected, realizes that unilateral clip pile oil cylinder group piston clip pile movement velocity is faster than bilateral clip pile oil cylinder group piston clip pile movement velocity；
When reversal valve is in right position working condition, P mouthfuls of logical oil returns, K mouthfuls of logical high pressure oils press from both sides under K mouthfuls of pressure oil effect
Stake sequence control valve be in left position working condition, at this time P mouthfuls with B mouthfuls it is unblocked be connected to, P mouthfuls with A mouthfuls then by restriction phase
Connection, realizes that bilateral clip pile oil cylinder group piston pine stake movement velocity is faster than unilateral clip pile oil cylinder group piston pine stake movement velocity.
The size of the clip pile sequence control valve restriction by control clip pile sequence control valve valve core movement stroke come
It adjusts.
A kind of clip pile sequence control valve, including valve body, spool, first end cover, second end cover, first throttle adjusting rod,
Two flow restriction control bars and resetting spring, the valve body are equipped with P mouthfuls, A mouthfuls and B mouthfuls totally three hydraulic fluid ports；The spool is sliding in valve body
It is dynamic, by controlling A mouthfuls and B mouthfuls of opening degree sizes, realize the control to cylinder movement sequence；Control is provided in the first end cover
K mouthfuls of donsole and the duct for placing first throttle adjusting rod are provided with the duct of installation resetting spring and adjusting knob in second end cover,
But do not open control mouth；The valve core inside is provided with K1 mouthfuls of control mouth and is communicated with right side control oil pocket；The resetting spring is located at valve
Core both ends, the first throttle adjusting rod is for adjusting the movement travel of spool to the left, to control when spool is located at left end
When, the restriction size of B mouthfuls of formation；Second flow restriction control bar can adjust the movement travel of spool to the right, to which spool is worked as in control
When positioned at right end, the restriction size of A mouthfuls of formation.
The first throttle adjusting rod is connect with first end cover by sealing plug, the sealing plug and first end cover it
Between sealed by the first O-ring seal, the external screw thread of the sealing plug engage with the internal thread of first end cover, and compression first
O-ring seal；The internal thread of the sealing plug is engaged with the external screw thread of first throttle adjusting rod, by rotating first throttle tune
Pole, it can be achieved that first throttle adjusting rod along the axial movement of its axis direction, the second flow restriction control bar and second end cover
Connection it is identical as the connection type of first throttle adjusting rod and first end cover.
The valve body is sealed with first end cover and second end cover joint face by the second O-ring seal.
The valve body is bolted into an entirety with first end cover and second end cover by connecting.
The spool uses the form of V-groove type restriction.
The present invention on clip pile oil circuit by installing clip pile sequence control valve, in clip pile process, unilateral moving jaw additional
Movement velocity is faster than the movement velocity of bilateral activities jaw, is faster than in the opening speed that loose stake process is bilateral activities jaw unilateral
The opening speed of moving jaw, therefore, it can be achieved that unilateral moving jaw always first clip pile, bilateral activities jaw always after clip pile it is suitable
Sequence requirement solves list the problem of being easy to press from both sides bad stake when avoiding clip pile after bilateral activities jaw elder generation clip pile, unilateral moving jaw
Intrinsic problem existing for the regular jaw formula Pile holding mechanism scheme of side, keeps the clip pile organization plan practical.It lives relative to four sides
Movable clamp port formula Pile holding mechanism scheme reduces what side moving jaw needed using unilateral regular jaw formula Pile holding mechanism scheme
Clip pile oil cylinder, cost reduction, the clip pile hydraulic system of hydraulic static pile pressing machine suitable for pile foundation construction.
Description of the drawings
Fig. 1 is the vertical view complete section schematic diagram of unilateral regular jaw Pile holding mechanism.
Fig. 2 is the hydraulic schematic diagram of clip pile hydraulic system of the present invention.
Fig. 3 is the full sectional view of clip pile sequence control valve of the present invention.
Fig. 4 is clip pile sequence control valve left view of the present invention.
Fig. 5 is clip pile sequence control valve partial enlarged view of the present invention.
In attached drawing, the unilateral moving jaws of 1-, 2- bilateral activities jaws, the prefabricated cylinder pile piles of 4-, 5- pile clamping boxes, 6- grips pincers
Mouthful, 7- hydraulic pumps, 8- check valves, the first overflow valves of 9-, 10- reversal valves, the second overflow valves of 11-, 12- hydraulic control one-way valves, 13- folders
Stake sequence control valve, 14- valve bodies, 15- first end covers, the first O-ring seals of 16-, 17- sealing plugs, 18- first throttles are adjusted
Bar, 19- resetting springs, 20- spools, the second O-ring seals of 21-, the second control handles of 22-, 23- second end covers, 24- connection spiral shells
Bolt, the unilateral clip pile oil cylinder groups of 25-, the bilateral clip pile oil cylinder groups of 26-.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
As shown in Fig. 2, a kind of pile press machine clip pile hydraulic system of achievable sequence clip pile, relative to traditional hydraulic static
Pile press machine clip pile hydraulic system is mounted with a clip pile sequence control valve 13 on clip pile oil circuit.The clip pile sequence control valve
For spring reset liquid controlled reversing three-position three-way valve.When P and K leads to oil return, the clip pile sequence control valve 13 is in action of reset spring
It is in middle position state down, P, A, B open are connected at this time；When P mouthfuls of logical high pressure oils, K mouthfuls of logical oil returns, acted in K1 mouthfuls of pressure oils
Lower clip pile sequence control valve 13 is in right position working condition, at this time P mouthfuls with A mouthfuls it is unblocked be connected to, and P mouthfuls are then passed through with B mouthfuls
Throttling is connected, and the size of the restriction can be adjusted by controlling the valve core movement stroke of clip pile sequence control valve 13；P
When the logical oil return of mouth, K mouthfuls of logical high pressure oils, clip pile sequence control valve 13 is in left position working condition under K mouthfuls of pressure oils effect, this
When P mouthfuls with B mouthfuls it is unblocked be connected to, and P mouthfuls are then connected by restriction with A mouthfuls, and the size of the restriction can pass through
The valve core movement stroke of clip pile sequence control valve 13 is controlled to adjust.The P mouths of the clip pile sequence control valve pass through fluid pressure line
With the positive outlet of hydraulic control hydraulic control one-way valve 12；The A mouthfuls of big chambers of oil cylinder by fluid pressure line and unilateral clip pile oil cylinder group 25
Connection；B mouthfuls are connected to by fluid pressure line with the big chamber of oil cylinder of bilateral clip pile oil cylinder group 26；K mouthfuls pass through fluid pressure line and clip pile shape
The high pressure transformation chamber hydraulic fluid port connection of reversal valve 10 when state；The positive entrance of hydraulic control one-way valve 12 passes through fluid pressure line and clip pile state
When reversal valve 10 high pressure transformation chamber hydraulic fluid port connection；Unilateral clip pile oil cylinder group 25, bilateral 26 small chamber of clip pile oil cylinder group pass through hydraulic pressure
Pipeline is connected to the oil return transformation chamber hydraulic fluid port of reversal valve 10 when clip pile state；The reversal valve 10 is used to control the fortune of clip pile oil cylinder
Dynamic direction, the high pressure hydraulic fluid port of reversal valve 10 pass through the positive outlet of fluid pressure line and check valve 8, the oil return opening of reversal valve 10
It is connect with the total oil return of system, position unloading port is connected by the remote control mouth of fluid pressure line and the first overflow valve 9 in one of reversal valve 10
Logical, position unloading port is directly connected to oil return box by fluid pressure line in another of reversal valve 10；The forward direction of the check valve 8 enters
Mouth passes through fluid pressure line and 7 high pressure oil outlet of hydraulic pump；First overflow valve 9 for regulating system oil pressure and with commutation
The middle position unloading control mouth of valve 10 coordinates, and realizes position off-load in hydraulic system, oil inlet is by pipeline and is connecing check valve 8 just
To outlet, oil return opening is connected to the oil return of hydraulic system by fluid pressure line, and remote control mouth passes through fluid pressure line and commutation
Position unloading port is connected in one of valve 10；Second overflow valve 11 is for adjusting maximum clip pile pressure, oil inlet and clip pile
The high pressure transformation chamber hydraulic fluid port connection of reversal valve 10, oil return opening are connected to by fluid pressure line with the oil return of hydraulic system when state.
As shown in Fig. 3,4,5, a kind of clip pile sequence control valve, including valve body 14, spool 20, first end cover 15, second end
Lid 23, first throttle adjusting rod 18, the second flow restriction control bar 22 and resetting spring 19, the valve body 14 are equipped with P mouthfuls, A mouthfuls and B mouthfuls
Totally three hydraulic fluid ports；The spool 20 slides in valve body 14, by controlling A mouthfuls and B mouthfuls of opening degree sizes, realizes to cylinder movement
The control of sequence；The duct of control mouth K and first throttle adjusting rod 18 are provided in the first end cover 15, in second end cover 23
It is provided with the duct of installation resetting spring and adjusting knob, but does not open control mouth；Duct K1 and right side are provided with inside the spool 20
Control oil pocket communicates；The resetting spring 19 is located at spool both ends, the first throttle adjusting rod 18 for adjust spool 20 to
Left movement travel, to which control is when spool 20 is located at left end, the restriction size of B mouthfuls of formation；Second flow restriction control bar
The movement travel of 22 adjustable spools 20 to the right, to which control is when spool is located at right end, the restriction size of A mouthfuls of formation.
The first throttle adjusting rod 18 is connect with first end cover 15 by sealing plug 17, the sealing plug 17 and an end cap 15 it
Between sealed by the first O-ring seal 16, the external screw thread of the sealing plug 17 engages with the internal thread of end cap 15, and compression the
One O-ring seal 16；The internal thread of the sealing plug 17 is engaged with the external screw thread of first throttle adjusting rod 18, passes through rotation the
One flow restriction control bar 18, it can be achieved that first throttle adjusting rod 18 along the axial movement of its axis direction, second flow restriction control
The connection of bar 22 and second end cover 23 is identical as the connection type of first throttle adjusting rod 18 and first end cover 15.The valve body
14 are sealed with first end cover 15 and 23 joint face of second end cover by the second O-ring seal 21.The valve body 14 and first end cover
15 and second end cover 23 by connect bolt 24 connect into an entirety.The spool 20 uses the form of V-groove type restriction.
The unilateral regular jaw formula Pile holding mechanism composition figure of hydraulic static pile pressing machine is as shown in Figure 1.In Fig. 1, unilateral activity
Jaw 1 is driven by unilateral clip pile oil cylinder group 25；Bilateral activities jaw 2 is driven by bilateral clip pile oil cylinder group 26 respectively；Regular jaw 6
It is linked together with clip pile babinet 5, vertical direction positioning action is played to stake during clip pile.
It is unilateral into when clip pile process, that is, P mouthfuls of logical pressure oils, K mouthfuls of logical oil returns when reversal valve 10 is in left position working condition
The small chamber of clip pile oil cylinder group 25 and bilateral clip pile oil cylinder group 26 leads to oil return, and clip pile sequence control valve 13 leads to high pressure oil because of K1 control mouths
And be in right position working condition, at this time A mouthful with P mouthfuls it is unblocked be connected to, and between B mouthfuls and P mouthfuls throttle be connected to.Therefore pressure oil
From P mouthfuls of unblocked entrance A chambers, the big chamber of unilateral clip pile oil cylinder group 25 is entered back into, and pressure oil enters B from P mouthfuls by throttling
Mouthful, bilateral clip pile oil cylinder group 26 is entered back into, by controlling the movement travel of clip pile sequential control valve core, device restriction is adjusted
Size, then realize that 25 piston clip pile movement velocity of unilateral clip pile oil cylinder group is faster than bilateral 26 piston clip pile of clip pile oil cylinder group fortune
Dynamic speed.
It is unilateral when into loose stake process, that is, P mouthfuls of logical oil returns, K mouthfuls of logical high pressure oils when reversal valve 10 is in right position working condition
Clip pile oil cylinder group 25 and bilateral 26 small chamber of clip pile oil cylinder group lead to high pressure oil, and clip pile sequence control valve 13 leads to high pressure oil because of K control mouths
And be in left position working condition, at this time B mouthful with P mouthfuls it is unblocked be connected to, and throttle and be connected between A mouthfuls and P mouthfuls, therefore unilateral folder
The big chamber oil return of stake oil cylinder group 25 enters P mouthfuls from A mouthfuls by throttling, and the big chamber oil return of bilateral clip pile oil cylinder group 26 is smooth from B mouthfuls
It is logical without hindrance into P mouthfuls, then realize that 26 piston pine stake movement velocity of bilateral clip pile oil cylinder group is faster than unilateral clip pile oil cylinder group 25 and lives
The loose stake movement velocity of plug.
Pass through above-mentioned control, it can be ensured that any state can realize the first clip pile of unilateral moving jaw 1 and bilateral activities jaw 2
Clip pile function afterwards.
Pile holding mechanism according to the present invention includes the various forms stakes such as folder square pile, cylinder pile pile, square prismatic stake, sheet pile
Pile holding mechanism.Pile holding mechanism according to the present invention includes the Pile holding mechanism of the forms such as four cylinder formula of single layer and the double-deck eight cylinder formulas.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The present invention can not
It is restricted to the described embodiments, the above embodiments and description only illustrate the principle of the present invention, is not departing from this
Under the premise of spirit and range, various changes and improvements may be made to the invention, these changes and improvements both fall within requirement and protect
In the scope of the invention of shield.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (8)
1. a kind of pile press machine clip pile hydraulic system of achievable sequence clip pile, including clip pile sequence control valve（13）, feature exists
In：The clip pile sequence control valve (13) includes valve body（14）, spool（20）, first end cover（15）, second end cover（23）, first
Flow restriction control bar（18）, the second flow restriction control bar（22）And resetting spring（19）, the clip pile sequence control valve（13）Equipped with oil
K1 mouthfuls of P mouthfuls of mouth, A mouthfuls, B mouthfuls, K mouthfuls of control mouth and control mouth, wherein P mouthfuls with K1 mouthfuls in the clip pile sequence control valve（13）It is interior
Portion is connected to；P mouthfuls pass through fluid pressure line and hydraulic control one-way valve（12）Positive outlet, hydraulic control one-way valve（12）Positive entrance
Pass through reversal valve when fluid pressure line and clip pile state（10）High pressure transformation chamber hydraulic fluid port connection；A mouthfuls pass through fluid pressure line and control
The unilateral clip pile oil cylinder group of unilateral moving jaw（25）Oil cylinder big chamber connection；B mouthfuls pass through fluid pressure line and control bilateral activities
The bilateral clip pile oil cylinder group of jaw（26）The big chamber of oil cylinder communicate；K mouthfuls pass through reversal valve when fluid pressure line and clip pile state（10）
Oil return transformation chamber hydraulic fluid port and unilateral clip pile oil cylinder group（25）With bilateral clip pile oil cylinder group（26）Oil cylinder small chamber connection；
The spool（20）In valve body（14）Middle sliding is realized suitable to cylinder movement by controlling A mouthfuls and B mouthfuls of opening degree sizes
The control of sequence；The first end cover（15）On be provided with K mouthfuls of control mouth and place first throttle adjusting rod（18）Duct, second
End cap（23）On be provided with the duct of installation resetting spring and adjusting knob, but do not open control mouth；The spool（20）Inside is provided with
K1 mouthfuls of control mouth is communicated with right side control oil pocket；The resetting spring（19）Positioned at spool both ends, the first throttle adjusting rod
（18）For adjusting spool（20）Movement travel to the left, to which spool is worked as in control（20）When positioned at left end, the section of B mouthfuls of formation
Head piece size；Second flow restriction control bar（22）Adjustable spool（20）Movement travel to the right, to control when spool is located at most
When right end, the restriction size of A mouthfuls of formation.
2. a kind of control method of achievable sequence clip pile, special using pile press machine clip pile hydraulic system described in claim 1
Sign is：The clip pile sequence control valve（13）P mouths and when K mouthfuls of logical oil returns, the clip pile sequence control valve（13）It is resetting
Spring effect is lower to be in middle position state, P mouthfuls at this time, A mouthfuls, B mouthfuls of open connections；
Work as reversal valve（10）When in left position working condition, P mouthfuls of logical high pressure oils, K mouthfuls of logical oil returns, under K1 mouthfuls of pressure oil effect
Clip pile sequence control valve（13）In right position working condition, at this time P mouthfuls with A mouthfuls it is unblocked be connected to, P mouthfuls with B mouthfuls then through celebrating a festival
Head piece is connected, and realizes unilateral clip pile oil cylinder group（25）Piston clip pile movement velocity is faster than bilateral clip pile oil cylinder group（26）Piston clip
Stake movement velocity；
Work as reversal valve（10）In right position working condition, P mouthfuls of logical oil returns, K mouthfuls of logical high pressure oils press from both sides under K mouthfuls of pressure oil effect
Stake sequence control valve（13）In left position working condition, at this time P mouthfuls with B mouthfuls it is unblocked be connected to, P mouthfuls with A mouthful then by throttlings
Mouth is connected, and realizes bilateral clip pile oil cylinder group（26）Piston pine stake movement velocity is faster than unilateral clip pile oil cylinder group（25）Piston pine stake
Movement velocity.
3. the control method of achievable sequence clip pile according to claim 2, it is characterised in that：The clip pile sequential control
Valve（13）The size of restriction is by controlling clip pile sequence control valve（13）Valve core movement stroke adjust.
4. a kind of clip pile sequence control valve, using in pile press machine clip pile hydraulic system described in claim 1, feature exists
In：Including valve body（14）, spool（20）, first end cover（15）, second end cover（23）, first throttle adjusting rod（18）, second section
Flow adjusting rod（22）And resetting spring（19）, the valve body（14）Equipped with P mouthfuls, A mouthfuls and B mouthfuls totally three hydraulic fluid ports；The spool
（20）In valve body（14）Middle sliding realizes the control to cylinder movement sequence by controlling A mouthfuls and B mouthfuls of opening degree sizes；It is described
First end cover（15）On be provided with K mouthfuls of control mouth, the first end cover（15）On be additionally provided with place first throttle adjusting rod
（18）Duct, second end cover（23）On be provided with the duct of installation resetting spring and adjusting knob, but do not open control mouth；The valve
Core（20）Inside is provided with K1 mouthfuls of control mouth and is communicated with right side control oil pocket；The resetting spring（19）It is described positioned at spool both ends
First throttle adjusting rod（18）For adjusting spool（20）Movement travel to the left, to which spool is worked as in control（20）Positioned at left end
When, the restriction size of B mouthfuls of formation；Second flow restriction control bar（22）Adjustable spool（20）Movement travel to the right, to control
System is when spool is located at right end, the restriction size of A mouthfuls of formation.
5. clip pile sequence control valve according to claim 4, it is characterised in that：The first throttle adjusting rod（18）With
One end cap（15）Pass through sealing plug（17）Connection, the sealing plug（17）With first end cover（15）Between it is O-shaped by first
Sealing ring（16）Sealing, the sealing plug（17）External screw thread and first end cover（15）Internal thread engagement, and compress the first O
Type sealing ring（16）；The sealing plug（17）Internal thread and first throttle adjusting rod（18）External screw thread engagement, pass through rotation
Turn first throttle adjusting rod（18）, it can be achieved that first throttle adjusting rod（18）Along the axial movement of its axis direction, described second
Flow restriction control bar（22）And second end cover（23）Connection and first throttle adjusting rod（18）And first end cover（15）Connection side
Formula is identical.
6. clip pile sequence control valve according to claim 5, it is characterised in that：The valve body（14）With first end cover（15）
And second end cover（23）Joint face passes through the second O-ring seal（21）Sealing.
7. clip pile sequence control valve according to claim 6, it is characterised in that：The valve body（14）With first end cover（15）
And second end cover（23）By connecting bolt（24）Connect into an entirety.
8. clip pile sequence control valve according to claim 6, it is characterised in that：The spool（20）Using V-groove type section
The form of head piece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610890308.7A CN106337846B (en) | 2016-10-12 | 2016-10-12 | The pile press machine clip pile hydraulic system and control method and clip pile sequence control valve of achievable sequence clip pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610890308.7A CN106337846B (en) | 2016-10-12 | 2016-10-12 | The pile press machine clip pile hydraulic system and control method and clip pile sequence control valve of achievable sequence clip pile |
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| CN106337846A CN106337846A (en) | 2017-01-18 |
| CN106337846B true CN106337846B (en) | 2018-08-17 |
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| WO2014204925A1 (en) * | 2013-06-18 | 2014-12-24 | Eaton Corporation | Fluid controller with load sense and flow amplification |
| CN203670338U (en) * | 2014-01-13 | 2014-06-25 | 常德中联重科液压有限公司 | Sequence valve and corresponding hydraulic control loop |
| CN204003700U (en) * | 2014-07-02 | 2014-12-10 | 徐州重型机械有限公司 | Oil cylinder sequentially-operating hydraulic control system and engineering mechanical device |
| CN204436906U (en) * | 2015-01-30 | 2015-07-01 | 陕西凯拓自动化工程有限公司 | A kind of hydraulic system |
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2016
- 2016-10-12 CN CN201610890308.7A patent/CN106337846B/en active Active
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