CN106629396A - Electro-hydraulic union speed adjustment rotary system for crane and control method - Google Patents
Electro-hydraulic union speed adjustment rotary system for crane and control method Download PDFInfo
- Publication number
- CN106629396A CN106629396A CN201611205576.7A CN201611205576A CN106629396A CN 106629396 A CN106629396 A CN 106629396A CN 201611205576 A CN201611205576 A CN 201611205576A CN 106629396 A CN106629396 A CN 106629396A
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- pressure
- valve
- damper
- hydraulic
- handle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses an electro-hydraulic union speed adjustment rotary system for a crane and a control method. The electro-hydraulic union speed adjustment rotary system comprises a hydraulically controlled handle, an adjustment and control system, a rotary control valve, a rotary motor and a cargo boom. The rotary work is adjusted and controlled through steps of detecting the state of the hydraulically controlled handle and comparing output pressure of the hydraulically controlled handle with a set value of a pressure relay. The electro-hydraulic union speed adjustment rotary system is obvious in effect, convenient and practical; when the handle is quickly pressed or reset, impact caused by sudden start and stop can be effectively reduced, and the operation comfortableness is improved; shaking of a heavy object in sudden start and stop is reduced, and the safety is improved; the shaking of the heavy object is reduced, so that the load impact is reduced, and the service life of the whole machine is prolonged.
Description
Technical field
The present invention relates to a kind of rotary system, belong to engineering machinery field, specifically a kind of crane is with electro-hydraulic joint speed governing
Rotary system and control method.
Background technology
At present medium and small tonnage crane generally adopts all-hydraulic pilot control mode, has compared with large-tonnage electrically controlled manipulation
The advantages of low cost, simple control, reliability and high servicing ease.But, according to marketing users to operating precision and behaviour
The continuous lifting that vertical comfortableness is required, also reflects some shortcomings：Because hydraulic control pilot handle is manually controlled entirely, control mode
More single, controlling curve adjustment is difficult, controls dumb；It is first for special applications demand and the different occasions for manipulating custom
Leading operating system cannot meet.During revolution action, handle quickly returns middle bit manipulation, and action stops very fast and causes car load to rock,
Affect to manipulate ride comfort, comfortableness and security.
The content of the invention
For the problem that above-mentioned prior art is present, the present invention provides a kind of crane electro-hydraulic joint speed governing rotary system
And control method, with the impact that reduces pressure when revolution action quickly starts and stops, improving crane rotation action start and stop and put down
It is pliable.
To achieve these goals, the technical solution used in the present invention is：A kind of crane is turned round with electro-hydraulic joint speed governing
System, including hydraulic control handle, the input of the hydraulic control handle is connected with hydraulic oil container, and the output end of hydraulic control handle is by regulation and control
System is connected with rotary control valve, and the rotary control valve is connected to crane arm by rotary motor；The regulator control system includes
The pressure switch of hydraulic control handle output end is connected to, the pressure switch is connected with the defeated of proportional pressure-reducing valve by check valve
Enter end, the proportional pressure-reducing valve is connected to rotary control valve, and the backflow end of the proportional pressure-reducing valve is connected to liquid by damper
Force feed case；Oil circuit residing for the check valve is also parallel with damper, and described damper one end is connected to pressure switch, the other end
It is connected to the input of proportional pressure-reducing valve.
Further, the hydraulic control handle includes handle controller I and handle controller II, and the pressure switch includes pressure
Power relay I and pressure switch II, proportional pressure-reducing valve includes proportional pressure-reducing valve I and proportional pressure-reducing valve II, and check valve includes single
To valve I and check valve II, damper includes damper I, damper II, damper III and damper IV；The handle controller I
And the input of handle controller II connects hydraulic oil container, output end is respectively connecting to pressure switch I and pressure switch II；
Pressure switch I is connected to the input of proportional pressure-reducing valve I by check valve I, and the output end of proportional pressure-reducing valve I is connected to revolution control
The input I of valve processed；Pressure switch II is connected to the input of proportional pressure-reducing valve II, proportional pressure-reducing valve II by check valve II
Output end is connected to the input II of rotary control valve.
A kind of crane control method of electro-hydraulic joint speed governing rotary system, comprises the steps：
A, detection hydraulic control handle working condition：
When hydraulic control handle is in quick pressure, handle output pressure increases rapidly, into step B1；
When hydraulic control handle resets, handle output pressure is reduced rapidly, into step B2；
B1, contrast hydraulic control handle depressed state output pressure and pressure switch setting value：
When detecting output pressure of the hydraulic control handle in depressed state and hydraulic control handle and being less than pressure switch setting value, liquid
The output pressure of control handle continues to increase；
When detecting output pressure of the hydraulic control handle in depressed state and hydraulic control handle and being more than pressure switch setting value, control
The electric current of device control proportional pressure-reducing valve processed increases according to constant speed, while the control cavity pressure of rotary control valve is proportionally
The increase speed increase of pressure-reducing valve electric current, and then revolution is slowly started；
B2, contrast hydraulic control handle reset state output pressure and pressure switch setting value：
When detecting output pressure of the hydraulic control handle in reset state and hydraulic control handle and being more than pressure switch setting value, than
Example pressure-reducing valve still in electricity condition, the hydraulic oil of rotary control valve control chamber will be through damper III and/or damper IV
Oil return after throttling action, limits oil return speed so that rotary control valve control chamber pressure regulation by damper III and/or damper IV
Power decrease speed is reduced, so as to reduce the seating velocity of rotary control valve；
When detecting output pressure of the hydraulic control handle in reset state and hydraulic control handle and being less than pressure switch setting value, control
Device processed controls proportional pressure-reducing valve dead electricity, and the hydraulic oil of rotary control valve control chamber will be through damper I and/or the section of damper II
Oil return after stream effect, limits oil return speed so that rotary control valve control chamber pressure regulation power by damper I and/or damper II
Decrease speed is reduced, so as to reduce the seating velocity of rotary control valve；
The invention has the beneficial effects as follows：When handle is quickly pressed or resetted, can effectively reduce when starting suddenly and stopping
Impact, improves operation comfort；Rocking for weight when starting suddenly and stopping is reduced, security is improve；Reduce weight
Rock, load shock is reduced then, heightened the service life of whole machine.
Description of the drawings
Fig. 1 is the asphalt principle schematic diagram of prior art；
Fig. 2 is the asphalt principle schematic diagram of the present invention.
In figure：1st, hydraulic control handle, 1.1, handle controller I, 1.2, handle controller II,（2、3）, damper, 2.1, resistance
Buddhist nun's device I, 2.2, damper II, 3.1, damper III, 3.2, damper IV, 4, rotary control valve, 5, rotary motor, 6, lifting
Arm, 7, pressure switch, 7.1, pressure switch I, 7.2, pressure switch II, 8, proportional pressure-reducing valve, 8.1, proportional pressure-reducing valve
I, 8.2, proportional pressure-reducing valve II, 9, check valve, 9.1, check valve I, 9.2, check valve II, 10, hydraulic oil container.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described.
As shown in Fig. 2 a kind of crane is with electro-hydraulic joint speed governing rotary system, including hydraulic control handle 1, the hydraulic control handle
1 input is connected with hydraulic oil container 10, and the output end of hydraulic control handle 1 is connected with rotary control valve 4 by regulator control system, described
Rotary control valve 4 is connected to crane arm 6 by rotary motor 5；The regulator control system includes being connected to the output end of hydraulic control handle 1
Pressure switch 7, the pressure switch 7 is connected with the input of proportional pressure-reducing valve 8, the ratio decompression by check valve 9
Valve 8 is connected to rotary control valve 4, and the backflow end of the proportional pressure-reducing valve 8 is connected to hydraulic oil container 10 by damper 2；It is described
Oil circuit residing for check valve 9 is also parallel with damper 3, and the one end of the damper 3 is connected to pressure switch 7, and the other end is connected to
The input of proportional pressure-reducing valve 8.
Further, the hydraulic control handle 1 includes handle controller I 1.1 and handle controller II 1.2, the pressure relay
Device 7 includes pressure switch I 7.1 and pressure switch II 7.2, and proportional pressure-reducing valve 8 includes that proportional pressure-reducing valve I 8.1 and ratio subtract
Pressure valve II 8.2, check valve 9 includes check valve I 9.1 and check valve II 9.2, damper（2、3）Including damper I 2.1, damper
II 2.2, damper III 3.1 and damper IV 3.2；The input of the handle controller I 1.1 and handle controller II 1.2 connects
Hydraulic oil container 10 is connect, output end is respectively connecting to pressure switch I 7.1 and pressure switch II 7.2；Pressure switch I 7.1 leads to
The input that check valve I 9.1 is connected to proportional pressure-reducing valve I 8.1 is crossed, the output end of proportional pressure-reducing valve I 8.1 is connected to rotary control valve
4 input I, the backflow end of the proportional pressure-reducing valve I 8.1 is connected to hydraulic oil container 10 by damper I 2.1, described unidirectional
Valve I 9.1 is also parallel with damper III 3.1, and the one end of the damper III 3.1 is connected to pressure switch I 7.1, other end connection
To the input of proportional pressure-reducing valve I 8.1；Pressure switch II 7.2 is connected to proportional pressure-reducing valve II 8.2 by check valve II 9.2
Input, the output end of proportional pressure-reducing valve II 8.2 is connected to the input II of rotary control valve 4, the proportional pressure-reducing valve II 8.2
Backflow end hydraulic oil container 10 is connected to by damper II 2.2, the check valve II 9.2 is also parallel with damper IV 3.2, institute
State the one end of damper IV 3.2 and be connected to pressure switch II 7.2, the other end is connected to the input of proportional pressure-reducing valve II 8.2.
Operation principle of the present invention is：
1）Electro-hydraulic joint speed governing revolution starts control principle
When handle controller I 1.1 are quickly pressed, handle output pressure can increase rapidly.Handle output pressure reach pressure after
During the setting pressure of electrical equipment I 7.1, the electric current of controller control proportional pressure-reducing valve I 8.1 increases according to constant speed, due to than
The depressurization of example pressure-reducing valve I 8.1, the control cavity pressure of rotary control valve 4 will not increase rapidly, but according to constant speed
Increase, and then the commutating speed of rotary control valve 4 is controlled, reach the gentle purpose for starting of revolution.Handle controller II 2.1 return
Turn to start control principle ibid.
2）Electro-hydraulic joint speed governing revolution stops control principle
When I 1.1 Rapid reset of handle controller, the output pressure of handle can be reduced quickly.Do not have in the delivery outlet pressure of handle
Before having the setting pressure for dropping to pressure switch I 7.1, proportional pressure-reducing valve I 8.1 is in obtain electricity condition, the control of rotary control valve 4
The hydraulic oil in chamber processed will the oil return after the throttling action of damper III 3.1.When the delivery outlet pressure of handle, pressure relay is dropped to
When below the pressure set points of device I 7.1, the dead electricity of proportional pressure-reducing valve I 8.1, the hydraulic oil of the control chamber of rotary control valve 4 will be passed through
Oil return after the throttling action of damper I 2.1.Under the throttling action of damper I 2.1 and damper III 3.1, oil return speed is obtained
Limit, the pressure drop speed of the control chamber of rotary control valve 4 is reduced, and then reduce the seating velocity of rotary control valve 4,
So that revolution stopping is buffered.The revolution of handle controller II 2.1 stops control principle ibid.
A kind of crane control method of electro-hydraulic joint speed governing rotary system, comprises the steps：
A, detection hydraulic control handle working condition：
When hydraulic control handle is in quick pressure, handle output pressure increases rapidly, into step B1；
When hydraulic control handle resets, handle output pressure is reduced rapidly, into step B2；
B1, contrast hydraulic control handle depressed state output pressure and pressure switch setting value：
When detecting output pressure of the hydraulic control handle in depressed state and hydraulic control handle and being less than pressure switch setting value, liquid
The output pressure of control handle continues to increase；
When detecting output pressure of the hydraulic control handle in depressed state and hydraulic control handle and being more than pressure switch setting value, control
The electric current of device control proportional pressure-reducing valve processed increases according to constant speed, while the control cavity pressure of rotary control valve is proportionally
The increase speed increase of pressure-reducing valve electric current, and then revolution is slowly started；
B2, contrast hydraulic control handle reset state output pressure and pressure switch setting value：
When detecting output pressure of the hydraulic control handle in reset state and hydraulic control handle and being more than pressure switch setting value, than
Example pressure-reducing valve still in electricity condition, the hydraulic oil of rotary control valve control chamber will be through damper III and/or damper IV
Oil return after throttling action, limits oil return speed so that rotary control valve control chamber pressure regulation by damper III and/or damper IV
Power decrease speed is reduced, so as to reduce the seating velocity of rotary control valve；
When detecting output pressure of the hydraulic control handle in reset state and hydraulic control handle and being less than pressure switch setting value, control
Device processed controls proportional pressure-reducing valve dead electricity, and the hydraulic oil of rotary control valve control chamber will be through damper I and/or the section of damper II
Oil return after stream effect, limits oil return speed so that rotary control valve control chamber pressure regulation power by damper I and/or damper II
Decrease speed is reduced, so as to reduce the seating velocity of rotary control valve.
In sum, effect of the present invention is substantially, convenient and practical, when handle is quickly pressed or resetted, can effectively reduce
Impact when starting suddenly and stopping, improves operation comfort；Rocking for weight when starting suddenly and stopping is reduced, is improved
Security；Reduce weight to rock, load shock is reduced then, heighten the service life of whole machine.
Claims (3)
1. a kind of crane is with electro-hydraulic joint speed governing rotary system, including hydraulic control handle（1）, the hydraulic control handle（1）Input
End is connected with hydraulic oil container（10）, hydraulic control handle（1）Output end rotary control valve is connected with by regulator control system（4）, it is described
Rotary control valve（4）By rotary motor（5）It is connected to crane arm（6）；Characterized in that, the regulator control system includes being connected to
Hydraulic control handle（1）The pressure switch of output end（7）, the pressure switch（7）By check valve（9）Connect proportional decompression
Valve（8）Input, the proportional pressure-reducing valve（8）It is connected to rotary control valve（4）, the proportional pressure-reducing valve（8）Backflow end
By damper（2）It is connected to hydraulic oil container（10）；The check valve（9）Residing oil circuit is also parallel with damper（3）, the resistance
Buddhist nun's device（3）One end is connected to pressure switch（7）, the other end is connected to proportional pressure-reducing valve（8）Input.
2. a kind of crane according to claim 1 is with electro-hydraulic joint speed governing rotary system, it is characterised in that the hydraulic control
Handle（1）Including handle controller I（1.1）And handle controller II（1.2）, the pressure switch（7）Including pressure relay
Device I（7.1）And pressure switch II（7.2）, proportional pressure-reducing valve（8）Including proportional pressure-reducing valve I（8.1）And proportional pressure-reducing valve II
（8.2）, check valve（9）Including check valve I（9.1）And check valve II（9.2）, damper（2、3）Including damper I（2.1）, resistance
Buddhist nun's device II（2.2）, damper III（3.1）And damper IV（3.2）；The handle controller I（1.1）And handle controller II
（1.2）Input connection hydraulic oil container（10）, output end is respectively connecting to pressure switch I（7.1）And pressure switch II
（7.2）；Pressure switch I（7. 1）By check valve I（9.1）It is connected to proportional pressure-reducing valve I（8.1）Input, ratio subtracts
Pressure valve I（8.1）Output end is connected to rotary control valve（4）Input I, the proportional pressure-reducing valve I（8.1）Backflow end pass through
Damper I（2.1）It is connected to hydraulic oil container（10）, the check valve I（9.1）Also it is parallel with damper III（3.1）, the damping
Device III（3.1）One end is connected to pressure switch I（7.1）, the other end is connected to proportional pressure-reducing valve I（8.1）Input；Pressure
Relay II（7.2）By check valve II（9.2）It is connected to proportional pressure-reducing valve II（8.2）Input, proportional pressure-reducing valve II
（8.2）Output end is connected to rotary control valve（4）Input II, the proportional pressure-reducing valve II（8.2）Backflow end by resistance
Buddhist nun's device II（2.2）It is connected to hydraulic oil container（10）, the check valve II（9.2）Also it is parallel with damper IV（3.2）, the damping
Device IV（3.2）One end is connected to pressure switch II（7.2）, the other end is connected to proportional pressure-reducing valve II（8.2）Input.
3. the crane control method of electro-hydraulic joint speed governing rotary system, it is characterised in that usage right require 1 or 2 in institute
A kind of crane stated is comprised the following steps with electro-hydraulic joint speed governing rotary system：
A, detection hydraulic control handle working condition：
When hydraulic control handle is in quick pressure, handle output pressure increases rapidly, into step B1；
When hydraulic control handle resets, handle output pressure is reduced rapidly, into step B2；
B1, contrast hydraulic control handle depressed state output pressure and pressure switch setting value：
When detecting output pressure of the hydraulic control handle in depressed state and hydraulic control handle and being less than pressure switch setting value, liquid
The output pressure of control handle continues to increase；
When detecting output pressure of the hydraulic control handle in depressed state and hydraulic control handle and being more than pressure switch setting value, control
The electric current of device control proportional pressure-reducing valve processed increases according to constant speed, while the control cavity pressure of rotary control valve is proportionally
The increase speed increase of pressure-reducing valve electric current, and then revolution is slowly started；
B2, contrast hydraulic control handle reset state output pressure and pressure switch setting value：
When detecting output pressure of the hydraulic control handle in reset state and hydraulic control handle and being more than pressure switch setting value, than
Example pressure-reducing valve still in electricity condition, the hydraulic oil of rotary control valve control chamber will be through damper III and/or damper IV
Oil return after throttling action, limits oil return speed so that rotary control valve control chamber pressure regulation by damper III and/or damper IV
Power decrease speed is reduced, so as to reduce the seating velocity of rotary control valve；
When detecting output pressure of the hydraulic control handle in reset state and hydraulic control handle and being less than pressure switch setting value, control
Device processed controls proportional pressure-reducing valve dead electricity, and the hydraulic oil of rotary control valve control chamber will be through damper I and/or the section of damper II
Oil return after stream effect, limits oil return speed so that rotary control valve control chamber pressure regulation power by damper I and/or damper II
Decrease speed is reduced, so as to reduce the seating velocity of rotary control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205576.7A CN106629396B (en) | 2016-12-23 | 2016-12-23 | A kind of crane electro-hydraulic joint speed governing rotary system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205576.7A CN106629396B (en) | 2016-12-23 | 2016-12-23 | A kind of crane electro-hydraulic joint speed governing rotary system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106629396A true CN106629396A (en) | 2017-05-10 |
| CN106629396B CN106629396B (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611205576.7A Active CN106629396B (en) | 2016-12-23 | 2016-12-23 | A kind of crane electro-hydraulic joint speed governing rotary system and control method |
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Citations (7)
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| CN101704480A (en) * | 2009-11-05 | 2010-05-12 | 卢宇 | Mounting electrically and hydraulically operated rotation control valve for hydraulically-controlled crane |
| CN103010980A (en) * | 2012-12-10 | 2013-04-03 | 徐州重型机械有限公司 | Rotary control hydraulic system and crane |
| CN103112792A (en) * | 2013-03-01 | 2013-05-22 | 中国海洋石油总公司 | Integrated control valve of logging winch and logging winch system |
| CN103640975A (en) * | 2013-12-03 | 2014-03-19 | 中联重科股份有限公司 | Hydraulic control handle system |
| CN104709834A (en) * | 2013-12-11 | 2015-06-17 | 北汽福田汽车股份有限公司 | Revolution speed regulation control system and crane |
| KR101625681B1 (en) * | 2009-12-23 | 2016-05-30 | 두산인프라코어 주식회사 | Sudden Turning Prevention System for Construction Machinery |
| CN105805064A (en) * | 2016-04-25 | 2016-07-27 | 北汽福田汽车股份有限公司 | Engineering machine and rotation mechanism hydraulic system thereof |
-
2016
- 2016-12-23 CN CN201611205576.7A patent/CN106629396B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704480A (en) * | 2009-11-05 | 2010-05-12 | 卢宇 | Mounting electrically and hydraulically operated rotation control valve for hydraulically-controlled crane |
| KR101625681B1 (en) * | 2009-12-23 | 2016-05-30 | 두산인프라코어 주식회사 | Sudden Turning Prevention System for Construction Machinery |
| CN103010980A (en) * | 2012-12-10 | 2013-04-03 | 徐州重型机械有限公司 | Rotary control hydraulic system and crane |
| CN103112792A (en) * | 2013-03-01 | 2013-05-22 | 中国海洋石油总公司 | Integrated control valve of logging winch and logging winch system |
| CN103640975A (en) * | 2013-12-03 | 2014-03-19 | 中联重科股份有限公司 | Hydraulic control handle system |
| CN104709834A (en) * | 2013-12-11 | 2015-06-17 | 北汽福田汽车股份有限公司 | Revolution speed regulation control system and crane |
| CN105805064A (en) * | 2016-04-25 | 2016-07-27 | 北汽福田汽车股份有限公司 | Engineering machine and rotation mechanism hydraulic system thereof |
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|---|---|
| CN106629396B (en) | 2018-05-18 |
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