CN106337846A - Piling machine pile clamping hydraulic system and control method capable of achieving sequential pile clamping and pile clamping sequence control valve - Google Patents
Piling machine pile clamping hydraulic system and control method capable of achieving sequential pile clamping and pile clamping sequence control valve Download PDFInfo
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- CN106337846A CN106337846A CN201610890308.7A CN201610890308A CN106337846A CN 106337846 A CN106337846 A CN 106337846A CN 201610890308 A CN201610890308 A CN 201610890308A CN 106337846 A CN106337846 A CN 106337846A
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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
-
- 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
The invention discloses a piling machine pile clamping hydraulic system capable of achieving sequential pile clamping and a pile clamping sequence control valve. The piling machine pile clamping hydraulic system comprises the pile clamping sequence control valve which is provided with an oil port P, an oil port A, an oil port B, a control port K and a control port K1, wherein the oil port P communicates with the control port K1 inside the pile clamping sequence control valve; the oil port P communicates with a forward outlet of a hydraulic control one-way valve through a pipeline; a forward inlet of the hydraulic control one-way valve communicates with an oil port of a high-pressure variable pressure cavity of a reversing valve in a pile clamping state through a pipeline; the oil port A communicates with an oil cylinder large cavity of a unilateral pile clamping oil cylinder set for controlling a unilateral movable jaw through a pipeline; the oil port B communicates with an oil cylinder large cavity of a bilateral pile clamping oil cylinder set for controlling a bilateral movable jaw through a pipeline; and a control port K communicates with an oil port of an oil return variable pressure cavity of the reversing valve in the pile clamping state and both pile clamping oil cylinder small cavities through pipelines. According to the piling machine pile clamping hydraulic system capable of achieving sequential pile clamping and the pile clamping sequence control valve, the pile clamping sequence control valve is additionally installed on a pile clamping oil line, so that sequential pile clamping is achieved, and the problems that a pile is prone to being damaged by clamping in the pile clamping structure mode that unilateral fixing is conducted and trilateral movable jaws are provided.
Description
Technical field
The present invention relates to a kind of pile press machine clip pile hydraulic system of achievable order clip pile and control method and clip pile order
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 power effect, piling oil cylinder acts on pile driving pressure on pile clamping box, then via pile-clamp, pile driving pressure is delivered to prefabricated pile, makes
Prefabricated pile can overcome soil resistance and insert into stratum.Pile holding mechanism realizes clip pile and the function of transmission pile driving pressure, and its performance is to pressure
Quality of pile has significant impact.
Clip pile machine includes four side moving jaw formula Pile holding mechanisms, double-side fastening jaw type Pile holding mechanism and monolateral fixation now
Jaw type Pile holding mechanism, four side moving jaw formula Pile holding mechanism flexibilities are too big, difficult to stake, and production cost is higher.And it is double
Side regular jaw formula Pile holding mechanism, when pressing from both sides square pile, has that side jaw will be tight for pile holder and the moving jaw of opposite side will stake
Push the process of regular jaw to, easily by stake damaged surfaces.It is relatively low, flexible suitable that monolateral regular jaw formula Pile holding mechanism has cost
Middle the advantages of, combination property is preferable.But existing monolateral 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 motion of pile-clamp is simultaneously asynchronous, bilateral activities jaw easily and pushes away stake along the x-axis direction
Go out clip pile center, when monolateral moving jaw clip pile again, lead to stake to destroy because of local pressure.Therefore how to realize order
Clip pile it is ensured that clip pile reliable and stable be our problem demanding prompt solutions.
Content of the invention
The present invention is directed to the deficiencies in the prior art and provides a kind of low cost, good combination property, clip pile reliable and stable
A kind of pile press machine clip pile hydraulic system of achievable order clip pile and control method and clip pile sequence control valve.
The present invention adopts the following technical scheme that a kind of realization: pile press machine clip pile hydraulic system of achievable order clip pile, bag
Include clip pile sequence control valve, described clip pile sequence control valve is provided with hydraulic fluid port p mouth, a mouth, b mouth, control mouth k mouth and control mouth k1 mouth,
Wherein p mouth is connected in the inside of described clip pile sequence control valve with k1 mouth；P mouth passes through the forward direction of fluid pressure line and hydraulic control one-way valve
Outlet, the positive entrance of hydraulic control one-way valve is passed through fluid pressure line and is connected with the high pressure transformation chamber hydraulic fluid port of reversal valve during clip pile state
Logical；A mouth is passed through fluid pressure line and is connected with the big chamber of oil cylinder of the monolateral clip pile oil cylinder group controlling monolateral moving jaw；B mouth passes through liquid
Pressure pipe road is communicated with the big chamber of oil cylinder of the bilateral clip pile oil cylinder group controlling bilateral activities jaw；K mouth passes through fluid pressure line and clip pile
During state, the oil return transformation chamber hydraulic fluid port of reversal valve and monolateral clip pile oil cylinder group connect with the oil cylinder loculus of bilateral clip pile oil cylinder group.
When a kind of control method of achievable order clip pile, the p mouth of described clip pile sequence control valve and k mouth lead to oil return, institute
State clip pile sequence control valve and be in middle position state under action of reset spring, now p mouth, a mouth, the connection of b mouth open；
When reversal valve is in left position working condition, p mouth leads to hydraulic oil, k mouth leads to oil return, under the pressure oil of k1 mouth acts on
Clip pile sequence control valve is in right position working condition, and now p mouth is unblocked with a mouth connects, and p mouth and b mouth are then through restriction
It is connected, realize monolateral clip pile oil cylinder group piston clip pile movement velocity and be faster than bilateral clip pile oil cylinder group piston clip pile movement velocity；
When reversal valve is in right position working condition, p mouth leads to oil return, k mouth leads to hydraulic oil, presss from both sides under the pressure oil effect of k mouth
Stake sequence control valve is in left position working condition, and now p mouth is unblocked with b mouth connects, and p mouth and a mouth are then through restriction phase
Connection, realizes bilateral clip pile oil cylinder group piston pine stake movement velocity and is faster than monolateral clip pile oil cylinder group piston pine stake movement velocity.
The size of described clip pile sequence control valve restriction by control clip pile sequence control valve valve core movement stroke Lai
Adjust.
A kind of clip pile sequence control valve, including valve body, valve element, the first end cap, the second end cap, first throttle adjusting rod,
Two flow restriction control bars and back-moving spring, described valve body is provided with p mouth, a mouth and b mouth totally three hydraulic fluid ports；Described valve element is sliding in valve body
Dynamic, by controlling a mouth and b mouth opening degree size, realize the control to cylinder movement order；It is provided with control on described first end lid
Donsole k and the duct of first throttle adjusting rod, the second end cap have the duct installing back-moving spring and adjusting knob, but do not open
Control mouth；Described valve core inside has duct k1 and controls oil pocket to communicate with right side；Described back-moving spring is located at valve element two ends, described
First throttle adjusting rod is used for adjusting valve element movement travel to the left, thus controlling when valve element is located at high order end, b mouth is formed
Restriction size；Second throttling adjusting rod can adjust valve element movement travel to the right, thus controlling when valve element is located at low order end,
The restriction size that a mouth is formed.
Described first throttle adjusting rod is connected by sealing plug with the first end cap, between described sealing plug and an end cap
Sealed by an o type sealing ring, the external screw thread of described sealing plug is engaged with the female thread of end cap, and it is close to compress an o type
Seal；The female thread of described sealing plug is engaged with the external screw thread of first throttle adjusting rod, by rotating first throttle adjusting rod,
Achievable first throttle adjusting rod is along the axially-movable of its axis direction, the connection of described second throttling adjusting rod and the second end cap
Identical with the connected mode of first throttle adjusting rod and the first end cap.
Described valve body and the first end cap and the second end cap joint face pass through the 2nd o type sealing ring sealing.
Described valve body and the first end cap and the second end cap connect into an entirety by connecting bolt.
Described valve element is in the form of V-shaped grooved restriction.
The present invention passes through to install clip pile sequence control valve on clip pile oil circuit additional, in clip pile process, monolateral moving jaw
Movement velocity is faster than the movement velocity of bilateral activities jaw, is faster than monolateral in the opening speed that loose stake process is bilateral activities jaw
The opening speed of moving jaw, therefore, can achieve monolateral moving jaw all the time first clip pile, bilateral activities jaw all the time after clip pile suitable
Sequence requires, it is to avoid easily presss from both sides the problem of bad stake after bilateral activities jaw elder generation clip pile, monolateral moving jaw during clip pile, solves list
The intrinsic problem that side regular jaw formula Pile holding mechanism scheme exists, makes this clip pile organization plan practical.Live with respect to four sides
Movable clamp port formula Pile holding mechanism scheme, using monolateral regular jaw formula Pile holding mechanism scheme, decreases what side moving jaw needed
Clip pile oil cylinder, cost reduce it is adaptable in pile foundation construction hydraulic static pile pressing machine clip pile hydraulic system.
Brief description
Fig. 1 is the vertical view complete section schematic diagram of monolateral 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 drawing of the present invention.
In accompanying drawing, the monolateral moving jaw of 1-, 2- bilateral activities jaw, 4- prefabricated cylinder pile tube, 5- pile clamping box, 6- fixation clamps
Mouthful, 7- hydraulic pump, 8- check valve, 9- first overflow valve, 10- reversal valve, 11- second overflow valve, 12- hydraulic control one-way valve, 13- presss from both sides
Stake sequence control valve, 14- valve body, 15- first end cap, 16- the o type sealing ring, 17- sealing plug, 18- first throttle is adjusted
Bar, 19- back-moving spring, 20- valve element, 21- the 2nd o type sealing ring, 22- second control handle, 23- second end cap, 24- connects spiral shell
Bolt, 25- monolateral clip pile oil cylinder group, 26- bilateral clip pile oil cylinder group.
Specific embodiment
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 order clip pile, with respect 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.Described clip pile sequence control valve
For spring reset liquid controlled reversing three-position three-way valve.When p and k leads to oil return, described clip pile sequence control valve 13 is in action of reset spring
Under be in middle position state, now p, a, b open connection；When p mouth leads to hydraulic oil, k mouth leads to oil return, in the pressure oil effect of k1 mouth
Lower clip pile sequence control valve 13 is in right position working condition, and now p mouth is unblocked with a mouth connects, and p mouth is then passed through with b mouth
Throttling is connected, and the big I of this restriction is adjusted by controlling the valve core movement stroke of clip pile sequence control valve 13；p
When the logical oil return of mouth, k mouth lead to hydraulic oil, under the pressure oil effect of k mouth, clip pile sequence control valve 13 is in left position working condition, this
When p mouth is unblocked with b mouth connects, and p mouth is then connected through restriction with a mouth, and the big I of this restriction is passed through
The valve core movement stroke controlling clip pile sequence control valve 13 is adjusting.The p mouth of described clip pile sequence control valve passes through fluid pressure line
Positive outlet with hydraulic control hydraulic control one-way valve 12；A mouth passes through the big chamber of oil cylinder of fluid pressure line and monolateral clip pile oil cylinder group 25
Connection；B mouth is connected with the big chamber of oil cylinder of bilateral clip pile oil cylinder group 26 by fluid pressure line；K mouth passes through fluid pressure line and clip pile shape
The high pressure transformation chamber hydraulic fluid port connection of reversal valve 10 during state；The positive entrance of hydraulic control one-way valve 12 passes through fluid pressure line and clip pile state
When reversal valve 10 the connection of high pressure transformation chamber hydraulic fluid port；Monolateral clip pile oil cylinder group 25, bilateral clip pile oil cylinder group 26 loculus pass through hydraulic pressure
Pipeline is connected with the oil return transformation chamber hydraulic fluid port of reversal valve 10 during clip pile state；Described reversal valve 10 is used for controlling the fortune of clip pile oil cylinder
Dynamic direction, the high pressure hydraulic fluid port of reversal valve 10 passes through the positive outlet of fluid pressure line and check valve 8, the oil return opening of reversal valve 10
Oil return total with system is connected, and a middle position unloading port of reversal valve 10 passes through fluid pressure line and the remote control mouth of the first overflow valve 9 connects
Logical, another middle position unloading port of reversal valve 10 is directly connected with oil sump tank by fluid pressure line；The forward direction of described check valve 8 enters
Mouth is by fluid pressure line and hydraulic pump 7 hydraulic oil outlet；Described first overflow valve 9 be used for regulating system oil pressure and with commutation
The middle position unloading control mouth cooperation of valve 10, realizes hydraulic system middle position off-load, its oil-in passes through pipeline and just connecing check valve 8
To outlet, its oil return opening connects the oil return of hydraulic system by fluid pressure line, and its remote control mouth passes through fluid pressure line and commutation
One middle position unloading port connection of valve 10；Described second overflow valve 11 is used for adjusting maximum clip pile pressure, its oil-in and clip pile
The high pressure transformation chamber hydraulic fluid port connection of reversal valve 10 during state, its oil return opening is connected with the oil return of hydraulic system by fluid pressure line.
As shown in Fig. 3,4,5, a kind of clip pile sequence control valve, including valve body 14, valve element 20, the first end cap 15, the second end
Lid 23, first throttle adjusting rod 18, second throttling adjusting rod 22 and back-moving spring 19, described valve body 14 is provided with p mouth, a mouth and b mouth
Totally three hydraulic fluid ports；Described valve element 20 slides in valve body 14, by controlling a mouth and b mouth opening degree size, realizes to cylinder movement
The control of order；Control mouth k and the duct of first throttle adjusting rod 18 are provided with described first end cap 15, on the second end cap 22
Have the duct installing back-moving spring and adjusting knob, but do not open control mouth；Duct k1 and right side is had inside described valve element 20
Oil pocket is controlled to communicate；Described back-moving spring 19 is located at valve element two ends, described first throttle adjusting rod 18 be used for adjusting valve element 20 to
Left movement travel, thus controlling when valve element 20 is located at high order end, the restriction size that b mouth is formed；Second throttling adjusting rod
22 adjustable valve element 20 movement travels to the right, thus controlling when valve element is located at low order end, the restriction size that a mouth is formed.
Described first throttle adjusting rod 18 is connected by sealing plug 17 with the first end cap 15, described sealing plug 17 and an end cap 15 it
Between sealed by an o type sealing ring 16, the external screw thread of described sealing plug 17 is engaged with the female thread of end cap 15, and compresses
One o type sealing ring 16；The female thread of described sealing plug 17 is engaged with the external screw thread of first throttle adjusting rod 18, by rotation the
One flow restriction control bar 18, achievable first throttle adjusting rod 18 is along the axially-movable of its axis direction, described second flow restriction control
Bar 22 is identical with the connected mode of first throttle adjusting rod 18 and the first end cap 15 with the connection of the second end cap 23.Described valve body 14
Sealed by the 2nd o type sealing ring 21 with the first end cap 15 and the second end cap 23 joint face.Described valve body 14 and the first end cap 15
With the second end cap 23, an entirety is connected into by connecting bolt 24.Described valve element 20 is in the form of V-shaped grooved restriction.
The monolateral regular jaw formula Pile holding mechanism composition figure of hydraulic static pile pressing machine is as shown in Figure 1.In Fig. 1, monolateral activity
Jaw 1 is driven by monolateral 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 connected as a single entity with clip pile casing 5, during clip pile, stake is risen with vertical direction positioning action.
When reversal valve 10 is in left position working condition, when entrance clip pile process is that p mouth leads to pressure oil, k mouth leads to oil return, monolateral
The loculus 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 hydraulic oil because of k1 control mouth
And it is in right position working condition, now a mouth is unblocked with p mouth connects, and between b mouth and p mouth, throttling connects.Therefore pressure oil
From p mouth unblocked entrance a chamber, enter back into the big chamber of monolateral clip pile oil cylinder group 25, and pressure oil enters b from p mouth through throttling
Mouthful, enter back into bilateral clip pile oil cylinder group 26, by controlling the movement travel of clip pile sequential control valve core, scalable device restriction
Size, then realize monolateral clip pile oil cylinder group 25 piston clip pile movement velocity and be faster than bilateral clip pile oil cylinder group 26 piston clip pile fortune
Dynamic speed.
When reversal valve 10 is in right position working condition, when the loose stake process of entrance is that p mouth leads to oil return, k mouth leads to hydraulic oil, monolateral
Clip pile oil cylinder group 25 and bilateral clip pile oil cylinder group 26 loculus lead to hydraulic oil, and clip pile sequence control valve 13 leads to hydraulic oil because of k control mouth
And it is in left position working condition, now b mouth is unblocked with p mouth connects, and between a mouth and p mouth, throttling connects, therefore monolateral folder
The big chamber oil return of stake oil cylinder group 25 enters p mouth from a mouth through throttling, and the big chamber oil return of bilateral clip pile oil cylinder group 26 is smooth from b mouth
Lead to without hindrance entrance p mouth, then realize bilateral clip pile oil cylinder group 26 piston pine stake movement velocity and be faster than monolateral clip pile oil cylinder group 25 work
The loose stake movement velocity of plug.
By above-mentioned control it can be ensured that any state can realize the first clip pile of monolateral moving jaw 1 and bilateral activities jaw 2
Clip pile function afterwards.
Pile holding mechanism involved in the present invention comprises to press from both sides the various forms stakes such as square pile, cylinder pile tube, square prismatic stake, sheet pile
Pile holding mechanism.Pile holding mechanism involved in the present invention comprises the Pile holding mechanism of the form such as monolayer four cylinder formula and double-deck eight cylinder formulas.
Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The present invention can not
It is restricted to the described embodiments, merely illustrating the principles of the invention described in above-described embodiment and description, without departing from this
On the premise of spirit and scope, the present invention also has various changes and modifications, and these changes and improvements both fall within requirement and protect
In the scope of the invention of shield.Claimed scope is by appending claims and its equivalent thereof.
Claims (8)
1. a kind of pile press machine clip pile hydraulic system of achievable order clip pile, including clip pile sequence control valve (13), its feature exists
Be provided with hydraulic fluid port p mouth, a mouth, b mouth, control mouth k mouth and control mouth k1 mouth in: described clip pile sequence control valve (13), wherein p mouth with
K1 mouth connects in the inside of described clip pile sequence control valve (13)；P mouth passes through the forward direction of fluid pressure line and hydraulic control one-way valve (12)
Outlet, the positive entrance of hydraulic control one-way valve (12) passes through the high pressure transformation of fluid pressure line and reversal valve (10) during clip pile state
Chamber hydraulic fluid port connection；A mouth is passed through fluid pressure line and is connected with the big chamber of oil cylinder of monolateral clip pile oil cylinder group (25) controlling monolateral moving jaw
Logical；B mouth is communicated with the big chamber of oil cylinder of bilateral clip pile oil cylinder group (26) controlling bilateral activities jaw by fluid pressure line；K mouth leads to
Cross fluid pressure line and the oil return transformation chamber hydraulic fluid port of reversal valve (10) and monolateral clip pile oil cylinder group (25) and bilateral folder during clip pile state
The oil cylinder loculus connection of stake oil cylinder group (26).
2. a kind of control method of achievable order clip pile, using the pile press machine clip pile hydraulic system described in claim 1, it is special
Levy and be: when the p mouth of described clip pile sequence control valve (13) and k mouth lead to oil return, described clip pile sequence control valve (13) is resetting
It is in middle position state, now p mouth, a mouth, the connection of b mouth open under spring effect；
When reversal valve (10) is in left position working condition, p mouth leads to hydraulic oil, k mouth leads to oil return, under the pressure oil of k1 mouth acts on
Clip pile sequence control valve (13) is in right position working condition, and now p mouth is unblocked with a mouth connects, and p mouth and b mouth are then through celebrating a festival
Head piece is connected, and realizes monolateral clip pile oil cylinder group (25) piston clip pile movement velocity and is faster than bilateral clip pile oil cylinder group (26) piston clip
Stake movement velocity；
When reversal valve (10) is in right position working condition, p mouth leads to oil return, k mouth leads to hydraulic oil, presss from both sides under the pressure oil effect of k mouth
Stake sequence control valve (13) is in left position working condition, and now p mouth is unblocked with b mouth connects, and p mouth and a mouth are then through throttling
Mouth is connected, and realizes bilateral clip pile oil cylinder group (26) piston pine stake movement velocity and is faster than monolateral clip pile oil cylinder group (25) piston pine stake
Movement velocity.
3. achievable order clip pile method according to claim 2 it is characterised in that: described clip pile sequence control valve (13)
The size of restriction is adjusted by controlling the valve core movement stroke of clip pile sequence control valve (13).
4. a kind of clip pile sequence control valve, applies in the pile press machine clip pile hydraulic system described in claim 1, its feature exists
In: include valve body (14), valve element (20), the first end cap (15), the second end cap (23), first throttle adjusting rod (18), second section
Stream adjusting rod (22) and back-moving spring (19), described valve body (14) is provided with p mouth, a mouth and b mouth totally three hydraulic fluid ports；Described valve element
(20) slide in valve body (14), by controlling a mouth and b mouth opening degree size, realize the control to cylinder movement order；Described
Control mouth k and the duct of first throttle adjusting rod (18) are provided with the first end cap (15), the second end cap has installation on (22)
Back-moving spring and the duct of adjusting knob, but do not open control mouth；Have duct (k1) inside described valve element (20) to control with right side
Oil pocket communicates；Described back-moving spring (19) is located at valve element two ends, and described first throttle adjusting rod (18) is used for adjusting valve element (20)
Movement travel to the left, thus controlling when valve element (20) is located at high order end, the restriction size that b mouth is formed；Second throttling is adjusted
Pole (22) can adjust valve element (20) movement travel to the right, thus controlling when valve element is located at low order end, the throttling that a mouth is formed
Mouth size.
5. clip pile sequence control valve according to claim 4 it is characterised in that: described first throttle adjusting rod (18) and the
One end cap (15) passes through sealing plug (17) and connects, and passes through an o type close between described sealing plug (17) and an end cap (15)
Seal (16) seals, and the external screw thread of described sealing plug (17) is engaged with the female thread of end cap (15), and compresses an o type sealing
Circle (16)；The female thread of described sealing plug (17) is engaged with the external screw thread of first throttle adjusting rod (18), by rotating first
Flow restriction control bar (18), achievable first throttle adjusting rod (18) is adjusted along the axially-movable of its axis direction, described second throttling
Pole (22) is identical with the connected mode of first throttle adjusting rod (18) and the first end cap (15) with the connection of the second end cap (23).
6. clip pile sequence control valve according to claim 5 it is characterised in that: described valve body (14) and the first end cap (15)
Pass through the 2nd o type sealing ring (21) sealing with the second end cap (23) joint face.
7. clip pile sequence control valve according to claim 6 it is characterised in that: described valve body (14) and the first end cap (15)
With the second end cap (23), an entirety is connected into by connecting bolt (24).
8. clip pile sequence control valve according to claim 6 it is characterised in that: described valve element (20) adopt V-shaped grooved section
The form of head piece.
Priority Applications (1)
| 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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| 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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| CN106337846B CN106337846B (en) | 2018-08-17 |
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| 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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| CN106337846B (en) | 2018-08-17 |
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