CN105221502A - Load sensitive system and hoisting system protecting against shock controlling method - Google Patents
Load sensitive system and hoisting system protecting against shock controlling method Download PDFInfo
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- CN105221502A CN105221502A CN201410599098.7A CN201410599098A CN105221502A CN 105221502 A CN105221502 A CN 105221502A CN 201410599098 A CN201410599098 A CN 201410599098A CN 105221502 A CN105221502 A CN 105221502A
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Abstract
The invention discloses a kind of load sensitive system and hoisting system protecting against shock controlling method, relate to engineering machinery field, in order to fundamentally to reduce the impact that load-sensitive hoisting system starting and stopping operation exists.This load sensitive system comprises: variable displacement pump, variable displacement pump oil-feed path, load feedback path, way to cycle oil and pressure compensator.Pressure compensator has filler opening, oil outlet, the first control port, the second control port and control spring.Filler opening and variable displacement pump oil-feed communication, oil outlet is communicated with way to cycle oil, the first control port and load feedback communication, the second control port also with variable displacement pump oil-feed communication.Wherein, control spring and the first control port are positioned at same one end of pressure compensator, and the setting pressure of control spring is greater than the pressure reduction of variable displacement pump.The load sensitive system that technique scheme provides, fundamentally can reduce hoisting system starting and stopping compression shock.
Description
Technical field
The present invention relates to engineering machinery field, be specifically related to a kind of load sensitive system and hoisting system protecting against shock controlling method.
Background technique
Load sensitive system: load pressure signal is fed back to hydraulic system, system automatic pressure regulation and flow parameter can meet system job demand.
Variable displacement pump load sensitive system, with its higher combination property, has a wide range of applications in runabout crane design.Pressure signal needed for load can be fed back to variable displacement pump by this system, variable displacement pump realizes discharge capacity by automatic adjustment swash plate pivot angle and changes, and flows match needed for the flow moment that variable displacement pump is exported and system, so there is no too much spill losses, good energy saving property, and there is good manipulation system energy.
Function is closed because load sensitive system main valve meta P mouth adopts, when the stage that main valve valve port opens and closes, flow is closed with load connected sum suddenly, and hoisting mechanism startup and stopping exist effect of inertia in addition, and this system inevitably exists starting and stopping compression shock.
This impact can impact the smoothness of hoisting system, be mainly manifested in following two aspects: 1, the incipient stage of elevator falling motion, open pilot pressure due to equilibrium valve and take from motor whereabouts mouth, therefore can cause the opening that equilibrium valve is larger, make weight accelerate.Due to unexpected whereabouts, now motor filler opening flow can not meet falling speed, and the of short duration suction of motor is empty, and balance valve is closed instantaneously.Show and manoeuvring performance is: weight falls suddenly, stop suddenly again producing larger shake.2, when elevator stop motion, too high compression shock can affect the break shut-in time, causes break to control not mate with system manipulation, produces the phenomenons such as friction and abnormal sound.
At present for reducing compression shock to the impact of hoisting system smoothness, the general equilibrium valve needing design more complicated controls end cap.Such a process increases design cost, although alleviate the impact of compression shock on manoeuvring performance to a certain extent, fundamentally cannot reduce compression shock.
Inventor finds, at least there is following problems in prior art: adopt complicated equilibrium valve to control end cap to reduce the starting and stopping compression shock of hoisting mechanism in prior art, design cost is high, and regulating parameter is many, and specialty requires high.In addition, the impact that load-sensitive hoisting system starting and stopping operation exists can not fundamentally be reduced.
Summary of the invention
One of them object of the present invention proposes a kind of load sensitive system and hoisting system protecting against shock controlling method, in order to fundamentally to reduce the impact that load-sensitive hoisting system starting and stopping operation exists.
For achieving the above object, the invention provides following technological scheme:
The invention provides a kind of load sensitive system, comprising: variable displacement pump, variable displacement pump oil-feed path, load feedback path, way to cycle oil and pressure compensator;
Described pressure compensator has filler opening, oil outlet, the first control port, the second control port and control spring;
Described filler opening and described variable displacement pump oil-feed communication, described oil outlet is communicated with described way to cycle oil, described first control port and described load feedback communication, described second control port also with described variable displacement pump oil-feed communication;
Wherein, described control spring and described first control port are positioned at same one end of described pressure compensator, and the setting pressure of described control spring is greater than the pressure reduction of described variable displacement pump.
Load sensitive system as above, preferably, described control spring is adjustable spring.
Load sensitive system as above, preferably, described pressure compensator is three-way pressure compensating device.
The present invention reoffers a kind of hoisting system protecting against shock controlling method, comprises the following steps:
The cracking pressure of the pressure compensator of the load sensitive system be connected with hoisting system is set, and makes the cracking pressure of described pressure compensator be greater than the variable displacement pump pressure of load sensitive system and the difference of induced pressure;
Start hoisting system.
Hoisting system protecting against shock controlling method as above, preferably, the cracking pressure of the pressure compensator of the load sensitive system that described setting is connected with hoisting system, and the difference of the variable displacement pump pressure and induced pressure that make the cracking pressure of described pressure compensator be greater than load sensitive system comprises:
By the variable displacement pump oil-feed communication of the filler opening of described pressure compensator and load sensitive system, the way to cycle oil of the oil outlet of described pressure compensator with described load sensitive system is communicated with, by the first control port of described pressure compensator and described load feedback communication, by the second control port of described pressure compensator also with described variable displacement pump oil-feed communication; Wherein, described control spring and described first control port are positioned at same one end of described pressure compensator, and the setting pressure of described control spring is greater than the pressure reduction of described variable displacement pump.
Hoisting system protecting against shock controlling method as above, preferably, described control spring is adjustable spring.
Hoisting system protecting against shock controlling method as above, preferably, described pressure compensator is three-way pressure compensating device.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
Above-mentioned load sensitive system, the setting pressure of control spring is greater than the pressure reduction of variable displacement pump.When the hoisting system at load sensitive system place normally works, pressure compensator is in the normal state, i.e. closed condition.Now pressure compensator can not affect the working state of miscellaneous part in load sensitive system.In the moment (impact corresponding to the initiation pressure in Fig. 2, stop compression shock) that hoisting system starts and closes, pressure in variable displacement pump oil-feed path can increase instantaneously, with the setting pressure making the pressure reduction in variable displacement pump oil-feed path and load feedback path be greater than control spring, pressure compensator conducting, be communicated with way to cycle oil to make variable displacement pump oil-feed path, realize pressure release, thus reduce compression shock.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The principle schematic of the load sensitive system that Fig. 1 provides for the embodiment of the present invention;
The pressure history of variable displacement pump in the load sensitive system that Fig. 2 provides for the embodiment of the present invention.
Reference character:
1, variable displacement pump; 2, variable displacement pump oil-feed path; 3, load feedback path;
4, way to cycle oil; 5, pressure compensator; 51, filler opening;
52, oil outlet; 53, the first control port; 54, the second control port;
55, control spring; 6, variable displacement pump differential pressure control valve; 7, hoist motor;
8, main valve.
Embodiment
Below in conjunction with the elaboration that Fig. 1 ~ Fig. 2 carries out specifically to technological scheme provided by the invention, arbitrary technological means provided by the invention is carried out replace or all should within protection scope of the present invention by the technological scheme that two or more technological means or technical characteristics carry out mutually combining and obtain provided by the invention arbitrarily.
The embodiment of the present invention provides a kind of load sensitive system, comprising: variable displacement pump 1, variable displacement pump oil-feed path 2, load feedback path 3, way to cycle oil 4 and pressure compensator 5.Pressure compensator 5 has filler opening 51, oil outlet 52, first control port 53, second control port 54 and control spring 55.Filler opening 51 is communicated with variable displacement pump oil-feed path 2, and oil outlet 52 is communicated with way to cycle oil 4, and the first control port 53 is communicated with load feedback path 3, and the second control port 54 is also communicated with variable displacement pump oil-feed path 2.Wherein, control spring 55 and the first control port 53 are positioned at same one end of pressure compensator 5, and the setting pressure of control spring 55 is greater than the pressure reduction of variable displacement pump 1.
The pressure reduction when pressure reduction of variable displacement pump 1 refers to and normally works in (stabilization sub stage corresponding in Fig. 2) variable displacement pump oil-feed path 2 and load feedback path 3.Above-mentioned load sensitive system, the setting pressure of control spring 55 is greater than the pressure reduction of variable displacement pump 1.When the hoisting system at load sensitive system place normally works, pressure compensator 5 is in the normal state, i.e. closed condition.Now pressure compensator 5 can not affect the working state of miscellaneous part in load sensitive system.In the moment (impact corresponding to the initiation pressure in Fig. 2, stop two stages of compression shock) that hoisting system starts and closes, pressure in variable displacement pump oil-feed path 2 can increase instantaneously, with the setting pressure making the pressure reduction in variable displacement pump oil-feed path 2 and load feedback path 3 be greater than control spring 55, pressure compensator 5 conducting, be communicated with way to cycle oil 4 via pressure compensator 5 to make variable displacement pump oil-feed path 2, realize pressure release, thus fundamentally reduce compression shock, even can eliminate compression shock.
Above-mentioned load sensitive system, has installed pressure compensator 5, and during system worked well, the setting pressure of control spring 55 is greater than the pressure reduction of variable displacement pump 1 and induced pressure, is in closed condition, and system is not shunted.When hoisting system starting and stopping operation causes compression shock excessive instantaneously, pressure compensator 5 by-pass port is opened, and the high pressure oil moment pressure release of variable displacement pump P mouth, compression shock reduces, and improves the smoothness of Dynamic System.
Further, control spring 55 is adjustable spring.Can the cracking pressure of setting pressure compensator 5 by this spring.
Herein, pressure compensator 5 specifically can adopt three-way pressure compensating device.
The load sensitive system that technique scheme provides, adds pressure compensator 5.This pressure compensator 5 has three paths, connects load feedback path 3, variable displacement pump oil-feed path 2 and way to cycle oil 4 respectively.This pressure compensator 5 has adjustable spring, for adjusting starting differential pressure Δ P, such as when adjustable spring setting pressure reduction is 30bar, when now the difference of variable displacement pump P mouth pressure and induced pressure needs to be greater than 30bar, pressure compensator 5 could open bypass pressure release, otherwise pressure compensator 5 is in closed condition.Variable displacement pump differential pressure control valve 6 is for setting the difference Δ P1 of normal work variations per hour pump P mouth and induced pressure, and the present invention is by pressure compensator 5 pressure differential resetting for being greater than load-reacting pump 1 pressure reduction, and system normal time pressure compensator 5 can not be opened.In the moment that system starts and closes, pressure compensator 5 is opened, to reduce the impact that hoisting system is subject to.
Load sensitive system: load pressure signal is fed back to hydraulic system, system automatic pressure regulation and flow parameter can meet system job demand.
Three-way pressure compensating device 5: have three hydraulic fluid port paths, can, according to induced pressure automatic adjustment system bypass flow, make pressure and loading demand adapt.
The working procedure of above-mentioned load sensitive system is as follows:
Hoist motor 7 is connected with main valve 8, when hoist motor 7 starts action, motor pressure is fed back to variable displacement pump 1 by load feedback path 3 by main valve 8, now variable displacement pump 1 adjusting oil pump displacement automatically, along with the increase variable displacement pump P mouth pressure of oil pump capacity also increases thereupon, when to be increased to the difference of load feedback pressure be Δ P1 to variable displacement pump P mouth pressure, oil pump stops variable.Be illustrated in figure 2 variable displacement pump P mouth pressure change procedure curve, start and stop phase in system, the fluctuation of variable displacement pump P mouth pressure is comparatively large, and pressure compensator 5 understands conductings, to reduce system shock in these two stages.After stable, variable displacement pump P mouth pressure=induced pressure+Δ P1, due to Δ P> Δ P1, pressure compensator 5 can not be opened, therefore the normal running of not influential system.System reach stable before, variable displacement pump P mouth pressure there will be larger impact overshoot, when overshoot makes variable displacement pump P mouth pressure-induced pressure > Δ P, the now valve rod commutation of pressure compensator 5, variable displacement pump P mouth directly communicates with return opening, P mouth pressure reduces instantaneously, can prevent large impact.
In like manner, when hoist motor 7 stops, the valve rod meta due to variable displacement pump 1 is closed pattern, and the control lag of variable displacement pump 1 flow, in the adjustment of valve rod, thus there will be compression shock equally, and this pressure compensator 5 also can play bypass off-load, reduces the effect impacted.
The load sensitive system that technique scheme provides, fundamentally can reduce hoisting system starting and stopping compression shock, improves elevator and handles smoothness.Further, without the need to carrying out particular design to the control end cap of equilibrium valve, system cost is reduced, convenient for maintaining.
The embodiment of the present invention reoffers a kind of hoisting system protecting against shock controlling method, and the method preferably adopts the above embodiment of the present invention to provide the realization of load sensitive system, and the method comprises the following steps:
The cracking pressure of the pressure compensator 5 of the load sensitive system be connected with hoisting system is set, and makes the cracking pressure of pressure compensator 5 be greater than the variable displacement pump pressure of load sensitive system and the difference of induced pressure;
Start hoisting system.
Further, the cracking pressure of the pressure compensator 5 of the load sensitive system be connected with hoisting system is set, and the difference of the variable displacement pump pressure and induced pressure that make the cracking pressure of pressure compensator 5 be greater than load sensitive system comprises:
The filler opening 51 of pressure compensator 5 is communicated with the variable displacement pump oil-feed path 2 of load sensitive system, is communicated with the way to cycle oil 4 of load sensitive system by the oil outlet 52 of pressure compensator 5, first control port 53 of pressure compensator 5 is communicated with load feedback path 3, the second control port 54 of pressure compensator 5 is also communicated with variable displacement pump oil-feed path 2; Wherein, control spring 55 and the first control port 53 are positioned at same one end of pressure compensator 5, and the setting pressure of control spring 55 is greater than the pressure reduction of variable displacement pump 1.
Hold above-mentioned, control spring 55 is adjustable spring.
Preferably, pressure compensator 5 is three-way pressure compensating device.
In describing the invention; it will be appreciated that; term " orientation or the position relationship of the instruction such as " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be only for ease of describing the present invention and simplified characterization; instead of indicate or infer the device of indication or element must have specific orientation, be specific azimuth configuration and operation, thus can not be interpreted as restriction the present invention being protected to content.
If employ the word such as " first ", " second " herein to limit component, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe the present invention and simplified characterization, as do not stated in addition, the implication that above-mentioned word is not special.
Finally should be noted that: above embodiment is only in order to illustrate that technological scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technological scheme scope of request of the present invention protection.
Claims (7)
1. a load sensitive system, is characterized in that, comprising: variable displacement pump (1), variable displacement pump oil-feed path (2), load feedback path (3), way to cycle oil (4) and pressure compensator (5);
Described pressure compensator (5) has filler opening (51), oil outlet (52), the first control port (53), the second control port (54) and control spring (55);
Described filler opening (51) is communicated with described variable displacement pump oil-feed path (2), described oil outlet (52) is communicated with described way to cycle oil (4), described first control port (53) is communicated with described load feedback path (3), and described second control port (54) is also communicated with described variable displacement pump oil-feed path (2);
Wherein, described control spring (55) and described first control port (53) are positioned at same one end of described pressure compensator (5), and the setting pressure of described control spring (55) is greater than the pressure reduction of described variable displacement pump (1).
2. load sensitive system according to claim 1, is characterized in that, described control spring (55) is adjustable spring.
3., according to the arbitrary described load sensitive system of claim 1-2, it is characterized in that, described pressure compensator (5) is three-way pressure compensating device.
4. a hoisting system protecting against shock controlling method, is characterized in that, comprises the following steps:
The cracking pressure of the pressure compensator of the load sensitive system be connected with hoisting system is set, and makes the cracking pressure of described pressure compensator be greater than the variable displacement pump pressure of load sensitive system and the difference of induced pressure;
Start hoisting system.
5. hoisting system protecting against shock controlling method according to claim 4, it is characterized in that, the cracking pressure of the pressure compensator of the load sensitive system that described setting is connected with hoisting system, and the difference of the variable displacement pump pressure and induced pressure that make the cracking pressure of described pressure compensator be greater than load sensitive system comprises:
By the variable displacement pump oil-feed communication of the filler opening of described pressure compensator and load sensitive system, the way to cycle oil of the oil outlet of described pressure compensator with described load sensitive system is communicated with, by the first control port of described pressure compensator and described load feedback communication, by the second control port of described pressure compensator also with described variable displacement pump oil-feed communication; Wherein, described control spring and described first control port are positioned at same one end of described pressure compensator, and the setting pressure of described control spring is greater than the pressure reduction of described variable displacement pump.
6. hoisting system protecting against shock controlling method according to claim 5, is characterized in that, described control spring is adjustable spring.
7., according to the arbitrary described hoisting system protecting against shock controlling method of claim 4-6, it is characterized in that, described pressure compensator is three-way pressure compensating device.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410599098.7A CN105221502A (en) | 2014-10-30 | 2014-10-30 | Load sensitive system and hoisting system protecting against shock controlling method |
| BR112017008921-1A BR112017008921B1 (en) | 2014-10-30 | 2015-10-30 | Crane hydraulic system and system control method |
| US15/522,105 US20180319634A1 (en) | 2014-10-30 | 2015-10-30 | Crane hydraulic system and controlling method of the system |
| PCT/CN2015/093293 WO2016066126A1 (en) | 2014-10-30 | 2015-10-30 | Crane hydraulic system and control method based on system |
| US17/228,005 US20210229962A1 (en) | 2014-10-30 | 2021-04-12 | Crane hydraulic system and controlling method of the system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410599098.7A CN105221502A (en) | 2014-10-30 | 2014-10-30 | Load sensitive system and hoisting system protecting against shock controlling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105221502A true CN105221502A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410599098.7A Pending CN105221502A (en) | 2014-10-30 | 2014-10-30 | Load sensitive system and hoisting system protecting against shock controlling method |
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| Country | Link |
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| CN (1) | CN105221502A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005899A (en) * | 2019-12-30 | 2020-04-14 | 徐州重型机械有限公司 | Load-sensitive hydraulic system with controllable oil pump limit displacement, control method and engineering machinery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220724A (en) * | 1997-03-27 | 1999-06-23 | 胡斯可国际股份有限公司 | Hydraulic control valve system with split pressure compensator |
| CN103062144A (en) * | 2012-12-30 | 2013-04-24 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Load sensitive multi-way valve with anti-saturation function |
| CN103717911A (en) * | 2011-03-17 | 2014-04-09 | 派克汉尼芬公司 | Electro-hydraulic system for controlling multiple functions |
| CN104047917A (en) * | 2014-06-23 | 2014-09-17 | 柳州柳工液压件有限公司 | Flow distributor for construction machine |
| CN203879826U (en) * | 2014-05-12 | 2014-10-15 | 三一汽车制造有限公司 | Boom hydraulic system and concrete pumping equipment |
-
2014
- 2014-10-30 CN CN201410599098.7A patent/CN105221502A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220724A (en) * | 1997-03-27 | 1999-06-23 | 胡斯可国际股份有限公司 | Hydraulic control valve system with split pressure compensator |
| CN103717911A (en) * | 2011-03-17 | 2014-04-09 | 派克汉尼芬公司 | Electro-hydraulic system for controlling multiple functions |
| CN103062144A (en) * | 2012-12-30 | 2013-04-24 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Load sensitive multi-way valve with anti-saturation function |
| CN203879826U (en) * | 2014-05-12 | 2014-10-15 | 三一汽车制造有限公司 | Boom hydraulic system and concrete pumping equipment |
| CN104047917A (en) * | 2014-06-23 | 2014-09-17 | 柳州柳工液压件有限公司 | Flow distributor for construction machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005899A (en) * | 2019-12-30 | 2020-04-14 | 徐州重型机械有限公司 | Load-sensitive hydraulic system with controllable oil pump limit displacement, control method and engineering machinery |
| CN111005899B (en) * | 2019-12-30 | 2022-06-07 | 徐州重型机械有限公司 | Load-sensitive hydraulic system with controllable oil pump limit displacement, control method and engineering machinery |
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Application publication date: 20160106 |