CN114738340A - Rapid pile lifting potential energy regeneration system of static pile press and control method thereof - Google Patents
Rapid pile lifting potential energy regeneration system of static pile press and control method thereof Download PDFInfo
- Publication number
- CN114738340A CN114738340A CN202210529955.0A CN202210529955A CN114738340A CN 114738340 A CN114738340 A CN 114738340A CN 202210529955 A CN202210529955 A CN 202210529955A CN 114738340 A CN114738340 A CN 114738340A
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- pile
- pressure oil
- valve
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a rapid pile-lifting potential energy regeneration system of a static pile press and a control method thereof.A main pressure oil cylinder and an auxiliary pressure oil cylinder are fixed on a cross beam of a machine body, a pile clamping box is fixed with a piston rod ear of the main pressure oil cylinder through a pin shaft, the pile clamping box moves up and down along a guide rail in the stroke of the main pressure oil cylinder, and the pile clamping oil cylinder moves in the stroke of the oil cylinder around a precast pile in the pile clamping box; the inlet end of the hydraulic control oil drain valve of the main pressure oil cylinder is communicated with the rodless cavity of the main pressure oil cylinder, the inlet end of the hydraulic control oil drain valve of the auxiliary pressure oil cylinder is communicated with the rodless cavity of the auxiliary pressure oil cylinder, the inlet end of the reversing valve is communicated with the rodless cavity of the auxiliary pressure oil cylinder, the inlet end of the regeneration one-way valve is communicated with the outlet end of the reversing valve, the outlet end of the regeneration one-way valve is communicated with the rod cavity of the auxiliary pressure oil cylinder, and the inlet end of the overflow valve is communicated with the rodless cavity of the auxiliary pressure oil cylinder. The quick pile lifting potential energy regeneration system of the static pile press and the control method thereof have the advantages of quick response speed and operation speed and small pressure loss.
Description
Technical Field
The invention relates to control of an actuating element oil cylinder, in particular to a rapid pile lifting potential energy regeneration system of a static pile press, which is suitable for the fields of engineering machinery, machine tool equipment, equipment manufacturing, metallurgical mines and the like, and a control method of the rapid pile lifting potential energy regeneration system.
Background
As shown in fig. 1 and 2, the pile pressing part of the static pile pressing machine generally comprises a pile clamping box 13, a pair of main pressure cylinders 7 and a pair or more pairs of auxiliary pressure cylinders 8, the main pressure cylinders 7 and the auxiliary pressure cylinders 8 are fixed on a cross beam 12 of a machine body, the pile clamping box 13 is fixed with a piston rod ear ring of the main pressure cylinder through a pin shaft, the pile clamping box 13 moves up and down along a guide rail in the stroke of the main pressure cylinder 7, and the pile clamping cylinders 14 are arranged in the pile clamping box 13 around precast piles 15 and move in the stroke of the cylinders.
Pile pressing process:
firstly, a pile clamping box 13 clamps a precast pile 15 through a pile clamping oil cylinder 14;
secondly, the pile clamping box 13 is pressed down to the stroke of the oil cylinder from the initial position by the main oil cylinder 7;
thirdly, loosening the pile clamping box 13;
fourthly, the main oil cylinder 7 returns to the initial position (when the oil cylinder returns, oil enters from a rod cavity of the main oil cylinder, a hydraulic control oil drain valve of the main oil cylinder is opened, and oil in a rodless cavity of the main oil cylinder returns to an oil tank through the oil drain valve);
then repeating the steps of one, two, three and four 4;
when the main pressure oil cylinder 7 reaches the set pressure, the auxiliary pressure oil cylinder 8 participates in pile pressing, and the pile pressing step at the moment is as follows:
fifthly, clamping the precast pile 15 by the pile clamping box 13 through the pile clamping oil cylinder 14;
sixthly, the main pressure oil cylinder 7 and the auxiliary pressure oil cylinder 8 simultaneously press the pile clamping box 13 from the initial position to the stroke of the oil cylinders;
seventhly, loosening the pile clamping box 13;
eighthly, returning the main pressure oil cylinder 7, and passively returning the auxiliary pressure oil cylinder 8 under the driving of the pile clamping box 13 (when the oil cylinder returns, oil enters a rod cavity of the main pressure oil cylinder, a hydraulic control oil drain valve of the main pressure oil cylinder and a hydraulic control oil drain valve of the auxiliary pressure oil cylinder are opened, and oil in the rod-free cavity of the main pressure oil cylinder and the auxiliary pressure oil cylinder returns to the oil tank through the oil drain valves);
ninthly, returning the main pressure oil cylinder 7 and the auxiliary pressure oil cylinder 8 to the initial positions; and repeating the five, six, seven, eight and nine 5 steps until the preset bearing capacity is reached.
When the oil cylinder returns, pressure oil enters a rod cavity of the main pressure oil cylinder, the main pressure rodless cavity and the auxiliary pressure rodless cavity are communicated with the oil tank by opening a hydraulic control one-way valve of the main pressure oil cylinder and the auxiliary pressure oil cylinder, and the rest auxiliary pressure oil cylinders 8 are passively brought back by the main pressure oil cylinder 7.
Disclosure of Invention
The invention aims to provide a quick pile lifting potential energy regeneration system of a static pile press and a control method thereof, which have high response speed and operation speed and small pressure loss.
In order to achieve the above purpose, the solution of the invention is:
a rapid pile lifting potential energy regeneration system of a static pile press comprises a pilot operation valve, a multi-way valve, a main pressure cylinder hydraulic control oil drain valve, an auxiliary pressure cylinder hydraulic control oil drain valve, an overflow valve, a main pressure cylinder anti-expansion cylinder overflow valve, a main pressure cylinder, an auxiliary pressure cylinder anti-expansion cylinder overflow valve, a reversing valve, a regeneration one-way valve, a machine body cross beam, a pile clamping box, a pile clamping cylinder and a precast pile, wherein the main pressure cylinder and the auxiliary pressure cylinder are fixed on the machine body cross beam; the inlet end of the hydraulic control oil drain valve of the main pressure oil cylinder is communicated with the rodless cavity of the main pressure oil cylinder, the inlet end of the hydraulic control oil drain valve of the auxiliary pressure oil cylinder is communicated with the rodless cavity of the auxiliary pressure oil cylinder, the inlet end of the reversing valve is communicated with the rodless cavity of the auxiliary pressure oil cylinder, the inlet end of the regeneration one-way valve is communicated with the outlet end of the reversing valve, the outlet end of the regeneration one-way valve is communicated with the rod cavity of the auxiliary pressure oil cylinder, and the inlet end of the overflow valve is communicated with the rodless cavity of the auxiliary pressure oil cylinder.
The control method of the rapid pile lifting potential energy regeneration system of the static pile press comprises the following steps:
firstly, a pile clamping box clamps a precast pile through a pile clamping oil cylinder;
secondly, operating a first united pressure pile of a pilot operation valve, and controlling a main pressure oil cylinder of the multi-way valve to press a pile clamping box from an initial position to an oil cylinder stroke;
step three, loosening the pile clamping box;
operating a first combined lifting pile of the pilot operation valve, and controlling a main oil cylinder of the multi-way valve to return to an initial position;
when the oil cylinder returns, oil enters a rod cavity of the main oil cylinder, a hydraulic control oil drain valve of the main oil cylinder is opened, and oil in a rodless cavity of the main oil cylinder returns to an oil tank through the oil drain valve; then repeating the first step to the fourth step;
when the main pressure oil cylinder reaches the set pressure, the auxiliary pressure oil cylinder participates in pile pressing, and the pile pressing step at the moment is as follows:
step five, the pile clamping box clamps the precast pile through the pile clamping oil cylinder;
sixthly, simultaneously operating a first linkage pressure pile and a second linkage auxiliary pressure of a pilot operation valve, and controlling a multi-way valve, a main pressure oil cylinder and an auxiliary pressure oil cylinder to simultaneously press down a pile clamping box from an initial position to an oil cylinder stroke;
step seven, loosening the pile clamping box;
step eight, operating a first combined lifting pile of a pilot operation valve, and controlling a main oil cylinder of the multi-way valve to return to an initial position;
when the pilot operation valve is operated to lift the pile, the reversing valve is switched, the rod-free cavity of the auxiliary pressure oil cylinder can be communicated with the rod cavity in a one-way mode through the one-way valve of the auxiliary pressure oil cylinder, and return oil liquid in the rod-free cavity of the auxiliary pressure oil cylinder is supplemented to the rod cavity.
When the pilot operation valve is operated to lift the pile, opening a hydraulic control oil drain valve of the main pressure cylinder and a hydraulic control oil drain valve of the auxiliary pressure cylinder, and returning oil in a rodless cavity of the main pressure cylinder and the auxiliary pressure cylinder to an oil tank through the oil drain valves;
the main pressure oil cylinder returns, and the auxiliary pressure oil cylinder returns passively under the driving of the pile clamping box;
step nine, returning the main and auxiliary oil cylinders to the initial position; and then repeating the fifth step to the ninth step until the designed bearing capacity is achieved.
After the scheme is adopted, when the main pressure oil cylinder lifts the pile, the reversing valve is switched, the rodless cavity of the auxiliary pressure oil cylinder can be in one-way conduction with the rod cavity through the one-way valve of the auxiliary pressure oil cylinder, and return oil liquid in the rodless cavity of the auxiliary pressure oil cylinder is supplemented to the rod cavity; and opening a hydraulic control oil drain valve of the main pressure oil cylinder and a hydraulic control oil drain valve of the auxiliary pressure oil cylinder, and returning oil in a rodless cavity of the main pressure oil cylinder and the auxiliary pressure oil cylinder to an oil tank through the oil drain valves, so that air suction is reduced, noise and pause are reduced, the return speed of the auxiliary pressure oil cylinder is increased, and the integral operation speed of equipment is increased.
Drawings
Fig. 1 is a schematic structural view of a prior static pile press;
fig. 2 is a schematic view of a pile pressing of a prior art static pile pressing machine;
fig. 3 is a hydraulic schematic of the present invention.
Reference numerals:
1. a pilot operated valve; 2. a multi-way valve; 3. a hydraulic control oil drain valve of the main oil cylinder;
4. the auxiliary pressure oil cylinder hydraulically controls the oil drain valve; 5. a main overflow valve;
6. an overflow valve of the expansion prevention cylinder of the main pressure cylinder; 7. a main pressure oil cylinder;
8. an auxiliary pressure oil cylinder; 9. the secondary pressure oil cylinder prevents the overflow valve of the expansion cylinder;
10. a diverter valve; 11. a regenerative check valve; 12. a fuselage cross beam;
13. pile clamping box; 14. a pile clamping oil cylinder; 15. and (6) prefabricating the pile.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by the specific embodiment.
As shown in fig. 3, the invention provides a rapid pile-lifting potential energy regeneration system of a static pile press, which comprises a pilot operation valve 1, a multi-way valve 2, a main pressure cylinder hydraulic control oil drain valve 3, an auxiliary pressure cylinder hydraulic control oil drain valve 4, an overflow valve 5, a main pressure cylinder anti-expansion cylinder overflow valve 6, a main pressure cylinder 7, an auxiliary pressure cylinder 8, an auxiliary pressure cylinder anti-expansion cylinder overflow valve 9, a reversing valve 10, a regeneration one-way valve 11, a machine body cross beam 12, a pile clamping box 13, a pile clamping cylinder 14 and a precast pile 15, wherein the main pressure cylinder 7 and the auxiliary pressure cylinder 8 are fixed on the machine body cross beam 12, the pile clamping box 13 is fixed with a piston rod earring of the main pressure cylinder 7 through a pin shaft, the pile clamping box 13 moves up and down along a guide rail in the stroke of the main pressure cylinder 7, and the pile clamping cylinder 14 is arranged in the cylinder stroke to move around the precast pile 15 in the pile clamping box 13; the inlet end of the hydraulic control oil drain valve 3 of the main pressure oil cylinder is communicated with a rodless cavity of the main pressure oil cylinder 7, the inlet end of the hydraulic control oil drain valve 4 of the auxiliary pressure oil cylinder is communicated with a rodless cavity of the auxiliary pressure oil cylinder 8, the inlet end of the reversing valve 10 is communicated with a rodless cavity of the auxiliary pressure oil cylinder 8, the inlet end of the regeneration one-way valve 11 is communicated with the outlet end of the reversing valve 10, the outlet end of the regeneration one-way valve 11 is communicated with a rod cavity of the auxiliary pressure oil cylinder 8, and the inlet end of the overflow valve 5 is communicated with a rodless cavity of the auxiliary pressure oil cylinder 8.
The invention also provides a control method of the rapid pile lifting potential energy regeneration system of the static pile press, which can refer to the following steps:
firstly, a pile clamping box 13 clamps a precast pile 15 through a pile clamping oil cylinder 14;
secondly, operating the first pile pressing linkage of the pilot operation valve 1, and controlling a main oil cylinder 7 of the multi-way valve 2 to press the pile clamping box 13 from the initial position to the stroke of the oil cylinder;
thirdly, loosening the pile clamping box 13;
fourthly, operating the first combined lifting pile of the pilot operation valve 1 and controlling a main oil cylinder 7 of the multi-way valve 2 to return to the initial position;
when the oil cylinder returns, oil enters a rod cavity of the main oil cylinder 7, the hydraulic control oil drain valve 3 of the main oil cylinder is opened, and oil in a rodless cavity of the main oil cylinder returns to the oil tank through the oil drain valve; then repeating the steps of one, two, three and four 4;
when the main pressure oil cylinder 7 reaches the set pressure, the auxiliary pressure oil cylinder 8 participates in pile pressing, and the pile pressing step at the moment is as follows:
fifthly, clamping the precast pile 15 by the pile clamping box 13 through the pile clamping oil cylinder 14;
sixthly, simultaneously operating the first joint pile and the second joint auxiliary pressure of the pilot operation valve 1, and controlling the multi-way valve 2, the main pressure oil cylinder 7 and the auxiliary pressure oil cylinder 8 to simultaneously press the pile clamping box 13 from the initial position to the stroke of the oil cylinders;
seventhly, loosening the pile clamping box 13;
eighthly, operating the first combined lifting pile of the pilot operation valve 1 and controlling a main oil cylinder 7 of the multi-way valve 2 to return to the initial position;
when the pilot operation valve 1 is operated to lift the pile, the reversing valve 10 is switched, the rod-free cavity of the auxiliary pressure oil cylinder can be in one-way communication with the rod cavity through the auxiliary pressure oil cylinder one-way valve 11, and return oil liquid in the rod-free cavity of the auxiliary pressure oil cylinder is supplemented to the rod cavity.
When the pilot operation valve 1 is operated to lift the pile, a hydraulic control oil drain valve 3 of the main pressure oil cylinder and a hydraulic control oil drain valve 4 of the auxiliary pressure oil cylinder are opened, and oil in a rodless cavity of the main pressure oil cylinder and the auxiliary pressure oil cylinder returns to the oil tank through the oil drain valves;
the main pressure oil cylinder 7 returns, and the auxiliary pressure oil cylinder 8 returns passively under the drive of the pile clamping box 13;
ninthly, returning the main and auxiliary oil cylinders to the initial position; and repeating the five, six, seven, eight and nine 5 steps until the designed bearing capacity is reached.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the protection scope of the present invention.
Claims (2)
1. The utility model provides a quick pile lifting potential energy regeneration system of static pile driver which characterized in that: comprises a pilot operation valve (1), a multi-way valve (2), a main pressure cylinder hydraulic control oil drain valve (3), an auxiliary pressure cylinder hydraulic control oil drain valve (4), an overflow valve (5), a main pressure cylinder anti-expansion overflow valve (6), a main pressure cylinder (7), an auxiliary pressure cylinder (8), an auxiliary pressure cylinder anti-expansion overflow valve (9), a reversing valve (10), a regeneration one-way valve (11), a machine body cross beam (12), a pile clamping box (13), a pile clamping cylinder (14) and a precast pile (15), the pile clamping device comprises a main pressure oil cylinder (7) and an auxiliary pressure oil cylinder (8), wherein the main pressure oil cylinder and the auxiliary pressure oil cylinder are fixed on a cross beam (12) of a machine body, a pile clamping box (13) is fixed with a piston rod lug of the main pressure oil cylinder (7) through a pin shaft, the pile clamping box (13) moves up and down along a guide rail in the stroke of the main pressure oil cylinder (7), and a pile clamping oil cylinder (14) surrounds a precast pile (15) in the pile clamping box (13) and moves in the stroke of the oil cylinder; the inlet end of the main pressure oil cylinder hydraulic control oil drain valve (3) is communicated with a rodless cavity of the main pressure oil cylinder (7), the inlet end of the auxiliary pressure oil cylinder hydraulic control oil drain valve (4) is communicated with a rodless cavity of the auxiliary pressure oil cylinder (8), the inlet end of the reversing valve (10) is communicated with the rodless cavity of the auxiliary pressure oil cylinder (8), the inlet end of the regeneration one-way valve (11) is communicated with the outlet end of the reversing valve (10), the outlet end of the regeneration one-way valve (11) is communicated with a rod cavity of the auxiliary pressure oil cylinder (8), and the inlet end of the overflow valve (5) is communicated with the rodless cavity of the auxiliary pressure oil cylinder (8).
2. The control method of the rapid pile lifting potential energy regeneration system of the static pile press as claimed in claim 1, characterized by comprising the following steps:
firstly, a pile clamping box (13) clamps a precast pile (15) through a pile clamping oil cylinder (14);
secondly, operating a first combined pressure pile of the pilot operation valve (1) and controlling a main pressure oil cylinder (7) of the multi-way valve (2) to press a pile clamping box (13) from an initial position to an oil cylinder stroke;
thirdly, loosening the pile clamping box (13);
fourthly, operating a first combined lifting pile of the pilot operation valve (1) and controlling a main oil cylinder (7) of the multi-way valve (2) to return to an initial position;
when the oil cylinder returns, oil enters a rod cavity of the main oil cylinder (7), a hydraulic control oil drain valve (3) of the main oil cylinder is opened, and oil in a rodless cavity of the main oil cylinder returns to an oil tank through the oil drain valve; then repeating the first step to the fourth step;
when the main pressure oil cylinder (7) reaches the set pressure, the auxiliary pressure oil cylinder (8) participates in pile pressing, and the pile pressing step at the moment is as follows:
fifthly, clamping the precast pile (15) by the pile clamping box (13) through the pile clamping oil cylinder (14);
sixthly, simultaneously operating the pilot operation valve (1) to press the first combined pressure pile and the second combined auxiliary pressure pile, and controlling the multi-way valve (2), the main pressure oil cylinder (7) and the auxiliary pressure oil cylinder (8) to simultaneously press the pile clamping box (13) from the initial position to the stroke of the oil cylinder;
step seven, loosening the pile clamping box (13);
step eight, operating a first combined lifting pile of the pilot operation valve (1) and controlling a main oil cylinder (7) of the multi-way valve (2) to return to an initial position;
when the pilot operation valve (1) is operated to lift the pile, the reversing valve (10) is switched, the rod-free cavity of the auxiliary pressure oil cylinder can be communicated with the rod cavity in a one-way mode through the auxiliary pressure oil cylinder one-way valve (11), and return oil liquid in the rod-free cavity of the auxiliary pressure oil cylinder is supplemented to the rod cavity;
when the pilot operation valve (1) is operated to lift the pile, a hydraulic control oil drain valve (3) of the main pressure oil cylinder and a hydraulic control oil drain valve (4) of the auxiliary pressure oil cylinder are opened, and oil in a rodless cavity of the main pressure oil cylinder and the auxiliary pressure oil cylinder returns to an oil tank through the oil drain valves;
the main pressure oil cylinder (7) returns, and the auxiliary pressure oil cylinder (8) returns passively under the drive of the pile clamping box (13);
step nine, returning the main and auxiliary oil cylinders to the initial position; and then repeating the fifth step to the ninth step until the designed bearing capacity is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210529955.0A CN114738340A (en) | 2022-05-16 | 2022-05-16 | Rapid pile lifting potential energy regeneration system of static pile press and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210529955.0A CN114738340A (en) | 2022-05-16 | 2022-05-16 | Rapid pile lifting potential energy regeneration system of static pile press and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114738340A true CN114738340A (en) | 2022-07-12 |
Family
ID=82285671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210529955.0A Pending CN114738340A (en) | 2022-05-16 | 2022-05-16 | Rapid pile lifting potential energy regeneration system of static pile press and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114738340A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201206573Y (en) * | 2008-04-18 | 2009-03-11 | 梅张龙 | Pile pressing multiple-way valve |
| CN201221083Y (en) * | 2008-07-09 | 2009-04-15 | 赵黎明 | Final pressure stabilizing apparatus for hydraulic static pile-compressing machine |
| CN102605786A (en) * | 2012-04-09 | 2012-07-25 | 山河智能装备股份有限公司 | Pile pressing-in back stroke control system of static pile pressing-in machine and operation method of pile pressing-in back stroke control system |
| CN203428881U (en) * | 2013-08-21 | 2014-02-12 | 长沙中联消防机械有限公司 | Hydraulic control system of cantilever crane or ladder frame |
| CN211951018U (en) * | 2019-12-17 | 2020-11-17 | 杭州圣基建筑特种工程有限公司 | Intelligent pile pressing data monitoring system for pile foundation injection |
| CN212455012U (en) * | 2020-04-20 | 2021-02-02 | 长沙汽电汽车零部件有限公司 | Hydraulic lifting device, lifter and lift truck |
| CN212868045U (en) * | 2020-08-18 | 2021-04-02 | 湖南杰希重工有限公司 | Hydraulic system of aerial work platform |
| CN112943719A (en) * | 2021-01-25 | 2021-06-11 | 湖南三一快而居住宅工业有限公司 | Hydraulic control system of plate turnover machine and plate turnover machine |
-
2022
- 2022-05-16 CN CN202210529955.0A patent/CN114738340A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201206573Y (en) * | 2008-04-18 | 2009-03-11 | 梅张龙 | Pile pressing multiple-way valve |
| CN201221083Y (en) * | 2008-07-09 | 2009-04-15 | 赵黎明 | Final pressure stabilizing apparatus for hydraulic static pile-compressing machine |
| CN102605786A (en) * | 2012-04-09 | 2012-07-25 | 山河智能装备股份有限公司 | Pile pressing-in back stroke control system of static pile pressing-in machine and operation method of pile pressing-in back stroke control system |
| CN203428881U (en) * | 2013-08-21 | 2014-02-12 | 长沙中联消防机械有限公司 | Hydraulic control system of cantilever crane or ladder frame |
| CN211951018U (en) * | 2019-12-17 | 2020-11-17 | 杭州圣基建筑特种工程有限公司 | Intelligent pile pressing data monitoring system for pile foundation injection |
| CN212455012U (en) * | 2020-04-20 | 2021-02-02 | 长沙汽电汽车零部件有限公司 | Hydraulic lifting device, lifter and lift truck |
| CN212868045U (en) * | 2020-08-18 | 2021-04-02 | 湖南杰希重工有限公司 | Hydraulic system of aerial work platform |
| CN112943719A (en) * | 2021-01-25 | 2021-06-11 | 湖南三一快而居住宅工业有限公司 | Hydraulic control system of plate turnover machine and plate turnover machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20030032042A (en) | Controller for a hydraulic press and method for the operation thereof | |
| CN2869408Y (en) | Load feedback combination valve | |
| CN104948538B (en) | The servo hydraulic system and its construction method of a kind of plate bending machine | |
| CN203532390U (en) | Hydraulic cylinder quick motion loop and engineering machine | |
| CN106015135A (en) | Energy-saving type double-execution-unit hydraulic machine system and control method | |
| CN113027837A (en) | Bolt type hydraulic lifting platform control system and control method thereof | |
| KR19990035796A (en) | High speed safety circuit of hydraulic press | |
| CN114738340A (en) | Rapid pile lifting potential energy regeneration system of static pile press and control method thereof | |
| CN211039191U (en) | Hydraulic drive system | |
| CN202291180U (en) | Water pressure quick forging machine set | |
| CN101886645A (en) | Pneumatic and hydraulic linked cylinder | |
| CN114754035A (en) | Quick pile lifting electronic control system of static pile press and control method thereof | |
| CN114776651A (en) | Rapid pile lifting and oil return regeneration system of static pile press and control method thereof | |
| CN212127338U (en) | Multi-oil-cylinder sequential telescopic hydraulic control system | |
| CN201475079U (en) | Gas-liquid-linked hydraulic cylinder | |
| CN211202455U (en) | Section steel high-precision straightening electro-hydraulic proportional control loop | |
| CN111516858B (en) | Electric servo actuator | |
| CN210531300U (en) | Digital hydraulic cylinder suitable for rocker arm mechanism | |
| CN2721942Y (en) | Superhigh double-position and four-way solenoid reversing valve | |
| CN112590294A (en) | Multi-station servo extrusion hydraulic press | |
| CN211924593U (en) | Punching machine hydraulic system | |
| CN111439690A (en) | Multi-oil-cylinder sequential telescopic hydraulic system and control method | |
| CN218598498U (en) | Double-working hydraulic hammer forging machine | |
| CN217990555U (en) | Novel single high-pressure pump press | |
| CN213870490U (en) | Novel potential energy recovery control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |