CN101403217A - Hydraulic pile hammer gas-liquid control driving system for stepless regulation of impact energy and frequency - Google Patents
Hydraulic pile hammer gas-liquid control driving system for stepless regulation of impact energy and frequency Download PDFInfo
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- CN101403217A CN101403217A CNA2008101435946A CN200810143594A CN101403217A CN 101403217 A CN101403217 A CN 101403217A CN A2008101435946 A CNA2008101435946 A CN A2008101435946A CN 200810143594 A CN200810143594 A CN 200810143594A CN 101403217 A CN101403217 A CN 101403217A
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Abstract
The invention discloses a hydraulic pile hammer gas-liquid control drive system which can adjust impact energy and frequency in a stepless way, comprising an impact oil cylinder (2), an impact point signal acquisition valve (3), a main oil feeding conical valve (4), a main oil return conical valve (9) and a main control valve (13); wherein, the lower cavity of the impact oil cylinder (2) is communicated with the main oil feeding conical valve (4) and the main oil return conical valve (9), and the upper cavity the impact oil cylinder (2) is filled with nitrogen and communicated with the Ak3 control port of the main control valve (13); the output K2 port and K1 port of the main control valve (13) are respectively communicated with main oil feeding conical valve (4) and the control cavity of the main oil return conical valve (9), the control port Ak2 of the main control valve (13) is communicated with the K2 cavity, the control port AK is connected with controlling oil Pk, and the control port Ak1 is connected with the impact point signal acquisition valve (3). The invention is a hydraulic pile hammer gas-liquid control drive system which can adjust impact energy and frequency in a stepless way, wherein, the hydraulic pile hammer can not only achieve the purpose of large impact energy, but also realize the remote stepless adjusting of the impact energy and the impact frequency, thus meeting the adjusting requirements of actual construction on the impact energy and the impact frequency.
Description
Technical field
The present invention relates to pile foundation construction machinery, especially relate to a kind of pneumatic and hydraulic united controlled and the drive system of hydraulic pile hammer.
Background technology
In recent years, domestic some scientific research institutions technology of beginning to introduce external hydraulic pile hammer is tested, is studied.Mainly be that the hydraulic system of external several hydraulic pile hammers is carried out theoretical research, system emulation etc.,, improve system circuit according to experimental result.Its working method is exactly two kinds basically: a kind of is that one-way cylinder rises to the precalculated position to tup, discharges hydraulic coupling then, impacts downwards under action of gravity and realizes piling; Another kind is that the two-way cylinder cavity of resorption advances the logical oil return of hydraulic oil epicoele tup is risen to the precalculated position, and epicoele advances the logical oil return of hydraulic oil cavity of resorption then, impacts downwards under gravity and hydraulic coupling acting in conjunction and realizes piling.It is very big that the impact energy of first kind of mode can't reach, and can't long-range realization regulate impact energy and frequency of impact simultaneously, also just can't satisfy the adjusting requirement of practice of construction impact energy and frequency of impact; Though the second way can reach big impact energy, complex structure, and also can't long-range realization regulate impact energy and frequency of impact, also promptly can't satisfy the adjusting requirement of practice of construction impact energy and frequency of impact.
Summary of the invention
Problem to be solved by this invention provides and a kind ofly makes hydraulic pile hammer not only can reach big impact energy purpose but also can realize that remote stepless regulates impact energy and frequency of impact, but satisfy the practice of construction impact can and the stepless regulation of impact energy that requires of the adjusting of frequency of impact and the hydraulic pile hammer gas-liquid control driving system of frequency.
In order to solve the problems of the technologies described above, but the hydraulic pile hammer gas-liquid control driving system of stepless regulation of impact energy provided by the invention and frequency, comprise impact weights, impact oil cylinder, shock point signals collecting valve, main oil-feed cone valve, the first nothing stake and low pressure stop to impact control valve, depression signal is gathered valve, impact oil cylinder overload protection valve, empty Fill valve is inhaled in backhaul, main oil return cone valve, the second nothing stake and low pressure stop to impact control valve, oil-return accumulator, high pressure accumulator, main control valve, high frequency hangs down the impact energy pressure regulator valve, low frequency large impact energy pressure regulator valve, impact energy frequency of impact transfer valve, the control oil channel accumulator, there is not stake signals collecting valve, pile cover, P, O, Pk and T are respectively working connection hydraulic oil inlets, the working connection oil return opening, control oil-in and leakage oil return opening, impact the oil cylinder cavity of resorption and replace into hydraulic oil or oil return by main oil-feed cone valve and main oil return cone valve, the epicoele inflated with nitrogen also communicates with the Ak3 control mouthful (the pressure active area is Ak3) of main control valve; The control chamber of logical respectively main oil-feed cone valve of the output K2 mouth of main control valve and K1 mouth and main oil return cone valve, control its alternation switch, the logical K2 chamber of its control mouthful Ak2 (the pressure oil active area is Ak2), a control mouthful Ak (the pressure oil active area is Ak) meet the oily Pk of control, a control mouthful Ak1 (the pressure oil active area is Ak1) connects shock point signals collecting valve.
But adopt the stepless regulation of impact energy of technique scheme and the hydraulic pile hammer gas-liquid control driving system of frequency, impact weights move upward (abbreviation backhaul) drive, move downward (abbreviation stroke) by hydraulic coupling and unite to drive by epicoele nitrogen pressure and impact weights deadweight and produce powerful impact energy, backhaul commutation and relatively control main control valve by the epicoele nitrogen pressure of continuous increase and hydraulic pilot controlled pressure and commutate and realize, so remote adjustment hydraulic pilot controlled pressure gets final product the impact energy and the frequency of step-less adjustment pile hammer.The impact oil cylinder piston drives impact weights and moves upward when cavity of resorption advances hydraulic oil, impact oil cylinder epicoele nitrogen compress energy storage, nitrogen pressure Pq raises, when Pq makes the main control valve commutation during to the active force PkAk of master control valve core greater than controlled pressure Pk to the active force PqAk3 of master control valve core, and then close main oil-feed cone valve, open main oil return cone valve, impact the oil return of oil cylinder cavity of resorption so make, impact the piston and the impact weights of oil cylinder and under deadweight and nitrogen pressure effect, quicken to move downward impact pile cover realization piling, while shock point signals collecting valve events draws pressure oil makes its commutation to main control valve, closes main oil return cone valve and opens the commutation of main oil-feed cone valve realization stroke.Regulate the size that the Pk size can be regulated impact energy and frequency of impact.
Advantage of the present invention and technique effect are:
1, impacting the oil cylinder cavity of resorption is hydraulic fluid chamber, and epicoele is the nitrogen chamber of sealing, when cavity of resorption advances hydraulic oil, impacts the oil cylinder piston bar and drives the impact weights epicoele nitrogen compress energy storage simultaneously that moves upward; When impact oil cylinder cavity of resorption led to oil return, impact weights quickened to move downward the impact pile cover under the acting in conjunction of deadweight and nitrogen pressure.So relatively complete dependence gravity produces the pile hammer of impacting, the present invention can make the impact energy maximum of hydraulic pile driver improve more than 50%.
2, impacting oil cylinder backhaul commutation control principle is: impact the nitrogen pressure Pq rising that oil cylinder piston moves upward and makes its epicoele, until Pq the active force PqAk3 of master control valve core is made the main control valve commutation greater than controlled pressure Pk to the active force PkAk of master control valve core, realization backhaul commutation, therefore, change the size of Pk, the nitrogen pressure size in the impact oil cylinder nitrogen chamber in the time of can changing the main control valve commutation.Impact the oil cylinder stroke that moves upward because the nitrogen pressure in when commutation depends on, and the trip has determined impact energy and frequency of impact, therefore, step-less adjustment Pk size also with regard to step-less adjustment impact energy and frequency of impact.
In sum, the present invention a kind ofly makes hydraulic pile hammer not only can reach big impact energy purpose but also can realize that remote stepless regulates impact energy and frequency of impact, but satisfy the practice of construction impact can and the stepless regulation of impact energy that requires of the adjusting of frequency of impact and the hydraulic pile hammer gas-liquid control driving system of frequency.
Description of drawings
The present invention is further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is hydraulic pile hammer gas-liquid pressure-controlled of the present invention and driving principle figure (striking point position, the main valve heart do not commutate);
Fig. 2 is hydraulic pile hammer gas-liquid pressure-controlled of the present invention and driving principle figure (the main valve heart commutates, impact weights moves upward the position)
Among the figure: 1-impact weights 1; 2-impacts oil cylinder 2; 3-shock point signals collecting valve 3; 4-master's oil-feed cone valve 4,5-first does not have stake and low pressure stops to impact control valve 5, and the 6-depression signal is gathered valve 6; 7-impacts oil cylinder overload protection valve 7; empty Fill valve 8 is inhaled in the 8-backhaul, 9-master's oil return cone valve 9, and 10-second does not have stake and low pressure stops to impact control valve 10; 11-oil-return accumulator 11; 12-high pressure accumulator 12; 13-main control valve 13, the 14-high frequency hangs down impact energy pressure regulator valve 14,15-low frequency large impact energy pressure regulator valve 15; 16-impact energy frequency of impact transfer valve 16; 17-control oil channel accumulator 17,18-do not have a signals collecting valve 18,19-pile cover 19; P-working connection hydraulic oil inlet; O-working connection oil return opening, Pk-controls the oil-in, and T-leaks oil return opening
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, comprise impact weights 1, impact oil cylinder 2, shock point signals collecting valve 3, main oil-feed cone valve 4, the first nothing stake and low pressure stop to impact control valve 5, depression signal is gathered valve 6, impact oil cylinder overload protection valve 7, empty Fill valve 8 is inhaled in backhaul, main oil return cone valve 9, the second nothing stake and low pressure stop to impact control valve 10, oil-return accumulator 11, high pressure accumulator 12, main control valve 13, high frequency hangs down impact energy pressure regulator valve 14, low frequency large impact energy pressure regulator valve 15, impact energy frequency of impact transfer valve 16, control oil channel accumulator 17, there is not stake signals collecting valve 18, pile cover 19, P, O, Pk and T are respectively working connection hydraulic oil inlets, the working connection oil return opening, control oil-in and leakage oil return opening, impacting oil cylinder 2 cavity of resorptions is communicated with main oil-feed cone valve 4 and main oil return cone valve 9, impact oil cylinder 2 cavity of resorptions and replace into hydraulic oil or oil return, impact oil cylinder 2 epicoele inflated with nitrogen and control mouthful (the pressure active area is Ak3) communicating with the Ak3 of main control valve 13 by main oil-feed cone valve 4 and main oil return cone valve 9; The control chamber of logical respectively main oil-feed cone valve 4 of the output K2 mouth of main control valve 13 and K1 mouth and main oil return cone valve 9, control its alternation switch, the control mouth Ak2 of main control valve 13 (the pressure oil active area is Ak2) and K2 chamber communicate, control that a mouthful Ak (the pressure oil active area is Ak) meets the oily Pk of control, a control mouthful Ak1 (the pressure oil active area is Ak1) connects shock point signals collecting valve 3.
Main oil-feed cone valve 4, first does not have stake and low pressure stops to impact control valve 5, depression signal collection valve 6, impact oil cylinder overload protection valve 7, empty Fill valve 8, main oil return cone valve 9, the second nothing stake are inhaled in backhaul and low pressure stops to impact control valve 10 and main control valve 13 is integrated into an integral body (being called for short the pile-up valve group), oil cylinder 2 cavity of resorption connecting lines are short as far as possible with impacting, be that the pile-up valve group will be installed together with impact oil cylinder 2, same 3 accumulator oil-return accumulator 11, high pressure accumulator 12, control oil channel accumulator 17 also will be installed with the pile-up valve group is adjacent together; Shock point signals collecting valve 3 is installed and guarantee to be in right position when impact weights 1 striking point position, and impact weights 1 must position, a left side, place when moving upward; Do not have 18 installations of stake signals collecting valve and guarantee that the place is the next when whole pile hammer is pressed in the stake, it is upper not have signals collecting valve 18 place when not having a pile hammer to be sling by elevator; High frequency hangs down impact energy pressure regulator valve 14, low frequency large impact can pressure regulator valve 15, impact energy frequency of impact transfer valve 16 is installed in the drivers' cab pile hammer is carried out remote control.Be convenient control, guarantee that Ak equates substantially that with Ak3 Ak1 equates substantially with Ak2; The nitrogen initial pressure that impacts oil cylinder 2 nitrogen chambeies is fixed according to design, generally at 0.5～3MPa; High pressure accumulator 12 and oil-return accumulator 11 inflated with nitrogen pressure are fixed according to design, generally respectively at 10～18MPa and 0.3～1.5MPa; Low impact energy pressure regulator valve 14 pressure of high frequency are adjusted to than the high 0.5～4MPa of nitrogen chamber initial pressure, and the low frequency large impact can be adjusted to than the low impact energy pressure regulator valve 14 pressure regulation power height of high frequency by pressure regulator valve 15 pressure.
The operating principle of present embodiment is as follows:
(1) prepare: stake hangs in pile cover 19, whole pile hammer freely is pressed in the stake by pile cover 19, not having stake signals collecting valve 18 is in the next, since depression signal gather valve 6 under nitrogen pressure Pq effect, locate upper, so first do not have stake and low pressure and stop to impact control valve 5 left side controls mouthful and second and do not have stake and low pressure and stop to impact control valve 10 right controls mouthful by a depression signal collection valve 6 and a nothing signals collecting valve 18 leak T that removes heat by catharsis; Impact weights 1 is in the shock point position, right position, shock point signals collecting valve 3 places; Pressure oil enters high pressure hydraulic fluid port P; Ak2 communicates with its P by the K2 chamber in the main control valve 13, Ak1 communicates with the P oil circuit by shock point signals collecting valve 3, the logical oil cylinder 2 nitrogen chambeies of impacting of Ak3, control port this moment Pk does not have pressure control oil and enters, first does not have stake and low pressure stops to impact control valve 5, second and does not have stake and low pressure and stop to impact position, a left side, 10 fens other places of control valve and right, positions, a left side, main control valve 13 valve core places (Fig. 1 shows the position), main oil-feed cone valve 4 and main oil return cone valve 9 are all closed, and impact oil cylinder and are failure to actuate.
(2) enter circulation piling: Pk feeds controlled pressure oil (force value is Pk), under the Pk effect, the first nothing stake and low pressure stop to impact control valve 5, the second nothing stake and low pressure stop to impact control valve right position, 10 fens other places and left position, main control valve 13 valve cores are changed to right position (Fig. 2 shows the position) under the Pk effect, Ak2 leads to oil return O, the control chamber is by the logical oil return O in the K2 chamber of main control valve 13 on the main oil-feed cone valve 4, the control chamber is by the logical hydraulic oil P in the K1 chamber of main control valve 13 on the main oil return cone valve 9, main oil-feed cone valve 4 is opened, main oil return cone valve 9 cuts out, impact oil cylinder 2 cavity of resorptions and advance hydraulic oil, impacting oil cylinder 2 drive impact weights 1 moves upward, impact the compression of oil cylinder 2 epicoele nitrogen, nitrogen pressure raises, and shock point signals collecting valve 3 is located position, a left side under impact weights 1 effect, and Ak leads to oil return O, because Ak=Ak2, this moment, main control valve 13 was in certain equilibrium state by power PkAk-PqAk3 effect.When moving upward to a certain position, impact oil cylinder 2 make PkAk less than PqAk3, main control valve 13 is to left movement, the K2 of main control valve 13, Ak2 leads to hydraulic oil, K1 leads to oil return, the control chamber is by the logical hydraulic oil P in the K2 chamber of main control valve 13 on the main oil-feed cone valve 4, the control chamber is by the logical oil return O in the K1 chamber of main control valve 13 on the main oil return cone valve 9, main oil-feed cone valve 4 cuts out, main oil return cone valve 9 is opened, impact the logical oil return of oil cylinder 2 cavity of resorptions, impacting oil cylinder 2 moves downward at a high speed under impact weights 1 deadweight and the 2 epicoele nitrogen pressure effects of impact oil cylinder up to hitting pile cover 19 and entering ground by pile cover 19 driven piles, shock point signals collecting valve 3 enters right position simultaneously, hydraulic oil enters the Ak1 mouth of main control valve 13 by shock point signals collecting valve 3, and main control valve 13 valve cores move to right position (Fig. 1), enter next working cycles.
(3) do not have stake (or broken pile) air defense and play protection: when not having stake (or broken pile); control oil channel accumulator 17 places are upper; control oily Pk from control oil channel accumulator 17; depression signal is gathered valve 6 and is entered first and do not have stake and low pressure and stop to impact control valve 5 left side controls mouthful and second and do not have the right side that stake and low pressure stop to impact control valve 10 and control mouth; the first nothing stake and low pressure stop to impact position, a left side, control valve 5 places; the second nothing stake and low pressure stop to impact right position, control valve 10 places; main oil-feed cone valve 4; main oil return cone valve 9 cuts out; impact oil cylinder 2 cavity of resorption place closed states, impact oil cylinder 2 place's standstill state.
(4) nitrogen pressure is crossed low protection: it is low excessively to impact oil cylinder 2 epicoele nitrogen pressures; depression signal is gathered valve 6 place's cavity of resorptions; controlling oily Pk gathers valve 6 through depression signal and enters first and do not have stake and low pressure and stop to impact control valve 5 left side controls mouthful and second and do not have the right side that stake and low pressure stop to impact control valve 10 and control mouth; the first nothing stake and low pressure stop to impact position, a left side, control valve 5 places; the second nothing stake and low pressure stop to impact right position, control valve 10 places; main oil-feed cone valve 4, main oil return cone valve 9 are closed; impact oil cylinder 2 cavity of resorption place closed states, impact oil cylinder 2 place's standstill state.
Claims (1)
1, but the hydraulic pile hammer gas-liquid control driving system of a kind of stepless regulation of impact energy and frequency, comprise impact weights (1), impact oil cylinder (2), shock point signals collecting valve (3), main oil-feed cone valve (4), the first nothing stake and low pressure stop to impact control valve (5), depression signal is gathered valve (6), impact oil cylinder overload protection valve (7), empty Fill valve (8) is inhaled in backhaul, main oil return cone valve (9), the second nothing stake and low pressure stop to impact control valve (10), oil-return accumulator (11), high pressure accumulator (12), main control valve (13), high frequency hangs down impact energy pressure regulator valve (14), low frequency large impact energy pressure regulator valve (15), impact energy frequency of impact transfer valve (16), control oil channel accumulator (17), there is not stake signals collecting valve (18), pile cover (19), P, O, Pk and T are respectively working connection hydraulic oil inlets, the working connection oil return opening, control oil-in and leakage oil return opening, it is characterized in that: described impact oil cylinder (2) cavity of resorption is communicated with described main oil-feed cone valve (4) and main oil return cone valve (9), and described impact oil cylinder (2) epicoele inflated with nitrogen also mouthful communicates with the Ak3 of described main control valve (13) control; The output K2 mouth of described main control valve (13) and K1 mouth are communicated with the control chamber of described main oil-feed cone valve (4) and main oil return cone valve (9) respectively, and the control mouth Ak2 and the K2 chamber of described main control valve (13) communicates, controls that a mouthful Ak meets the oily Pk of control, a control mouthful Ak1 connects described shock point signals collecting valve (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101435946A CN101403217B (en) | 2008-11-14 | 2008-11-14 | Hydraulic pile hammer gas-liquid control driving system for stepless regulation of impact energy and frequency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101435946A CN101403217B (en) | 2008-11-14 | 2008-11-14 | Hydraulic pile hammer gas-liquid control driving system for stepless regulation of impact energy and frequency |
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| CN101403217A true CN101403217A (en) | 2009-04-08 |
| CN101403217B CN101403217B (en) | 2010-06-02 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102686819A (en) * | 2009-11-11 | 2012-09-19 | 株式会社水山重工业 | System for preventing idle blow and adjusting hitting power of breaker |
| CN102797902A (en) * | 2012-08-20 | 2012-11-28 | 中阀科技(长沙)阀门有限公司 | Hybrid driving system for water inlet valve of water turbine |
| CN107995934A (en) * | 2015-04-17 | 2018-05-04 | 桩腾公司 | method for piling |
| CN108757648A (en) * | 2018-05-21 | 2018-11-06 | 广东力源液压机械有限公司 | A kind of hydraulic pile hammer control method and its system |
| CN109469058A (en) * | 2018-10-15 | 2019-03-15 | 许慧保 | A kind of hydraulic excitation high frequency linear percussion mechanism |
| CN110944801A (en) * | 2017-07-24 | 2020-03-31 | 古河凿岩机械有限公司 | Hydraulic impact device |
| CN112160949A (en) * | 2019-12-06 | 2021-01-01 | 无锡市汉为液压气动有限公司 | Explosion-proof high-efficiency hydraulic pile hammer control system and pile driving method thereof |
| CN112539201A (en) * | 2019-09-23 | 2021-03-23 | 上海伦联机电设备有限公司 | High-frequency force loading electro-hydraulic system |
| CN113153853A (en) * | 2021-04-14 | 2021-07-23 | 中信重工机械股份有限公司 | Pipeline control device, valve body and liquid path control system for pile hammer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4028617C2 (en) * | 1990-09-08 | 1994-07-14 | Delmag Maschinenfabrik | Hydraulic bear |
| CN1049471C (en) * | 1996-02-02 | 2000-02-16 | 中南工业大学 | Hydraulic impact device for stepless independently regulating impact energy and impact frequency |
| CN2383958Y (en) * | 1999-07-24 | 2000-06-21 | 中南工业大学 | Hydraulic impactor |
| CN2464972Y (en) * | 2001-02-27 | 2001-12-12 | 王文丰 | Double-force cylinder oil feeder |
| GB2375319B (en) * | 2001-05-12 | 2004-10-13 | Baca Ltd | Power tool |
| CN2576797Y (en) * | 2002-10-23 | 2003-10-01 | 山东省泰安市装载机厂 | Impact-rammer boosted hydraulic device |
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- 2008-11-14 CN CN2008101435946A patent/CN101403217B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102686819A (en) * | 2009-11-11 | 2012-09-19 | 株式会社水山重工业 | System for preventing idle blow and adjusting hitting power of breaker |
| CN102686819B (en) * | 2009-11-11 | 2014-06-18 | 株式会社水山重工业 | System for preventing idle blow and adjusting hitting power of breaker |
| CN102797902A (en) * | 2012-08-20 | 2012-11-28 | 中阀科技(长沙)阀门有限公司 | Hybrid driving system for water inlet valve of water turbine |
| CN107995934A (en) * | 2015-04-17 | 2018-05-04 | 桩腾公司 | method for piling |
| CN110944801A (en) * | 2017-07-24 | 2020-03-31 | 古河凿岩机械有限公司 | Hydraulic impact device |
| CN110944801B (en) * | 2017-07-24 | 2023-06-30 | 古河凿岩机械有限公司 | Hydraulic impact device |
| CN108757648A (en) * | 2018-05-21 | 2018-11-06 | 广东力源液压机械有限公司 | A kind of hydraulic pile hammer control method and its system |
| CN109469058A (en) * | 2018-10-15 | 2019-03-15 | 许慧保 | A kind of hydraulic excitation high frequency linear percussion mechanism |
| CN112539201A (en) * | 2019-09-23 | 2021-03-23 | 上海伦联机电设备有限公司 | High-frequency force loading electro-hydraulic system |
| CN112539201B (en) * | 2019-09-23 | 2023-01-31 | 上海伦联机电设备有限公司 | High-frequency force loading electro-hydraulic system |
| CN112160949A (en) * | 2019-12-06 | 2021-01-01 | 无锡市汉为液压气动有限公司 | Explosion-proof high-efficiency hydraulic pile hammer control system and pile driving method thereof |
| CN113153853A (en) * | 2021-04-14 | 2021-07-23 | 中信重工机械股份有限公司 | Pipeline control device, valve body and liquid path control system for pile hammer |
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Assignee: HUNAN CHANGHE MACHINERY CO., LTD. Assignor: Central South University Contract record no.: 2011430000197 Denomination of invention: Hydraulic pile hammer gas-liquid control driving system for stepless regulation of impact energy and frequency Granted publication date: 20100602 License type: Exclusive License Open date: 20090408 Record date: 20111008 |
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