CN104675783A - Rotary combined control valve, rotary system, crane and control method - Google Patents
Rotary combined control valve, rotary system, crane and control method Download PDFInfo
- Publication number
- CN104675783A CN104675783A CN201510101608.8A CN201510101608A CN104675783A CN 104675783 A CN104675783 A CN 104675783A CN 201510101608 A CN201510101608 A CN 201510101608A CN 104675783 A CN104675783 A CN 104675783A
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- Prior art keywords
- valve
- communicated
- rotary
- control valve
- electric proportional
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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
- 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
-
- 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
- B66C23/86—Slewing gear hydraulically actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a rotary combined control valve, comprising a valve body, a reversing valve and an electric proportional overflow valve; a rotary motor is provided with a first oil port and a second oil port, the first oil port and the second oil port are respectively communicated with a first working port and a second working port of the reversing valve by a first oil path and a second oil path, and the first working port and the second working port of the reversing valve are communicated with an return oil path via the electric proportional overflow valve; an oil inlet of the reversing valve is communicated with a main oil path. The invention also provides a rotary system, a crane and a control method. The stationarity of the rotary system in a whole process can be improved, and a free slip rotating function is provided.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of revolution combined control valve, rotary system, hoist and controlling method.
Background technique
Along with the development of medium and small tonnage hoist, more and more higher to the requirement of its rotary system stationarity and travelling comfort.Conventional hoist revolution combined control valve is that to realize system by a rotary valve with fixing buffer value steady, in it, configuration free skating rotary valve realizes rotary system free rotary function simultaneously, and the method has the advantage that system is simple, compact structure, level of integration are high and cost is low.But in order to meet the job requirement of car load turning course, the setting pressure of its buffer overflow valve is comparatively large, and stopped process mesohigh is at oil back chamber, and its compensator or trimmer pressure is general less, and rush relief valve and cannot open, its cushioning effect is poor.
Summary of the invention
The object of the present invention is to provide a kind of revolution combined control valve, rotary system, hoist and controlling method, to improve stationarity and the free rotary function of rotary system overall process.
The invention provides a kind of revolution combined control valve, comprise: valve body, selector valve, electric proportional pressure control valve, described rotary motor has the first hydraulic fluid port and the second hydraulic fluid port, described first hydraulic fluid port and the second hydraulic fluid port are communicated with the second actuator port with the first actuator port of described selector valve with the second oil circuit through the first oil circuit respectively, and the first return opening of described selector valve is communicated with oil return circuit via described electric proportional pressure control valve with the second return opening; The filler opening of described selector valve is communicated with working connection.
Further, rotary buffering valve, the first one-way valve and the second one-way valve is also comprised; Described rotary buffering valve is connected in parallel between described first oil circuit and the second oil circuit; The entrance of described first one-way valve is communicated with oil return circuit, and the outlet of described first one-way valve is communicated with the first actuator port of the first hydraulic fluid port of described rotary motor and described selector valve; Be communicated with oil return circuit with the entrance of described second one-way valve, and the outlet of described second one-way valve is communicated with the second actuator port of the second hydraulic fluid port of described rotary motor and described selector valve.
Further, also comprise the 3rd one-way valve and the 4th one-way valve, the described entrance of the 3rd one-way valve is communicated with the first return opening of described selector valve, and the outlet of described 3rd one-way valve is communicated with oil return circuit through described electric proportional pressure control valve; The described entrance of the 4th one-way valve is communicated with the second return opening of described selector valve, and the outlet of described 4th one-way valve is communicated with oil return circuit through described electric proportional pressure control valve.
Further, also comprise the first solenoid valve and the second solenoid valve, the actuator port of described first solenoid valve and the actuator port of the second solenoid valve control mouth with the left position of described selector valve with right position respectively and are communicated with, for controlling the commutation of described selector valve.
Further, the 3rd solenoid valve also comprising rotary motor break and be communicated with described rotary motor break, described valve body comprises motor braking hydraulic fluid port, and the actuator port of described 3rd solenoid valve is communicated with the rod chamber of described rotary motor break through described motor braking hydraulic fluid port.
Further, described valve body also comprises and controls return opening and control filler opening, the described return opening of the 3rd solenoid valve is communicated with the control return opening on described valve body, and the described filler opening of the 3rd solenoid valve is communicated with the control filler opening on described valve body; The filler opening of described first solenoid valve is communicated with the filler opening of described 3rd solenoid valve, and the return opening of described first solenoid valve is communicated with the control return opening of described valve body; The filler opening of described second solenoid valve is communicated with the control filler opening of described valve body, and the return opening of described second solenoid valve is communicated with the control return opening of described valve body.
The present invention is a kind of rotary system also, comprises above-mentioned revolution combined control valve.
The present invention is a kind of hoist also, comprises above-mentioned rotary system.
The present invention also provides a kind of controlling method of rotary system described above, comprising:
In revolution start-up course, make through described electric proportional pressure control valve current value from large to small, thus the force value controlling electric proportional pressure control valve is from large to small, and rotary system back pressure from large to small, realizes rotary system smooth starting;
In turning course, make the current value through described electric proportional pressure control valve keep constant, thus the force value controlling electric proportional pressure control valve is constant, realizes the steady of turning course;
In revolution stopped process, the current value through described electric proportional pressure control valve is changed from small to big, and the force value controlling electric proportional pressure control valve is changed from small to big, and impact when constantly response revolution stops, until steadily stop;
Further, when rotary system stops, making described electric proportional pressure control valve power-off, the first hydraulic fluid port of rotary motor and the direct oil sump tank of oil of the second hydraulic fluid port, to realize rotary system free rotary.
Revolution combined control valve of the present invention, makes buffer overflow valve only be placed on oil circuit, without the need to taking into account that oil path high-pressure affects it, adopts variable buffering relief valve simultaneously, achieves rotary system overall process steadily and free rotary function.
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:
Fig. 1 is the hydraulic diagram of a specific embodiment of revolution combined control valve of the present invention.
Embodiment
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Fig. 1 shows a specific embodiment of revolution combined control valve of the present invention.As shown in Figure 1, revolution combined control valve in the present embodiment, comprise: valve body, selector valve 4, electric proportional pressure control valve 5, described rotary motor 1 has the first hydraulic fluid port and the second hydraulic fluid port, described first hydraulic fluid port and the second hydraulic fluid port are communicated with the second actuator port with first actuator port of the second oil circuit with described selector valve 4 through the first oil circuit respectively, and the first return opening of described selector valve 4 is communicated with oil return circuit via described electric proportional pressure control valve 5 with the second return opening; The filler opening of described selector valve 4 is communicated with working connection.Selector valve meta makes rotary system two hydraulic fluid ports by the direct oil sump tank of electric proportional pressure control valve, makes it be placed on oil circuit, avoid the impact of in-line on its force value, effectively improve the rigidity of rotary system in revolution overall process.
For guaranteeing Security, also comprise rotary buffering valve 6, first one-way valve 7 and the second one-way valve 8; Described rotary buffering valve 6 is connected in parallel between described first oil circuit and the second oil circuit; The entrance of described first one-way valve 7 is communicated with oil return circuit, and the outlet of described first one-way valve 7 is communicated with the first hydraulic fluid port of described rotary motor 1 and the first actuator port of described selector valve 4; Be communicated with oil return circuit with the entrance of described second one-way valve 8, and the outlet of described second one-way valve 8 is communicated with the second hydraulic fluid port of described rotary motor 1 and the second actuator port of described selector valve 4, thus ensure that the pressure balance of described rotary motor hydraulic fluid port.
For preventing adverse current, the 3rd one-way valve 9 and the 4th one-way valve 10 is also comprised in the present embodiment, the entrance of described 3rd one-way valve 9 is communicated with the first return opening of described selector valve 4, and the outlet of described 3rd one-way valve 9 is communicated with oil return circuit through described electric proportional pressure control valve 5; The entrance of described 4th one-way valve 9 is communicated with the second return opening of described selector valve 4, and the outlet of described 4th one-way valve 9 is communicated with oil return circuit through described electric proportional pressure control valve 5.
In order to realize the commutation control to described selector valve 4, the first solenoid valve Y1 and the second solenoid valve Y2 is also comprised in the present embodiment, the actuator port of described first solenoid valve Y1 controls mouth with the left position of described selector valve 4 with right position respectively with the actuator port of the second solenoid valve Y2 and is communicated with, and commutates for controlling described selector valve 4.
In initial state, need to pressurize to rotary motor break 2, so that brake described rotary motor 1, therefore, the 3rd solenoid valve Y3 also comprising rotary motor break 2 in the present embodiment and be communicated with described rotary motor break 2, described valve body comprises motor braking hydraulic fluid port Br, and the actuator port of described 3rd solenoid valve Y3 is communicated with the rod chamber of described rotary motor break 2 through described motor braking hydraulic fluid port Br.
In addition, described valve body also comprises and controls oil return inlet T ' and control oil inlet P ', the described return opening of the 3rd solenoid valve Y3 and the control oil return inlet T on described valve body ' be communicated with, the described filler opening of the 3rd solenoid valve Y3 and the control oil inlet P on described valve body ' be communicated with; The filler opening of described first solenoid valve Y1 is communicated with the filler opening of described 3rd solenoid valve Y3, the described return opening of the first solenoid valve Y1 and the control oil return inlet T of described valve body ' be communicated with; The described filler opening of the second solenoid valve Y2 and the control oil inlet P of described valve body ' be communicated with, the described return opening of the second solenoid valve Y2 and the control oil return inlet T of described valve body ' be communicated with.
The present invention is a kind of rotary system also, comprises above-mentioned revolution combined control valve.
The present invention is a kind of hoist also, comprises above-mentioned rotary system.
The present invention also provides a kind of controlling method of rotary system described above, comprising:
In revolution start-up course, make through described electric proportional pressure control valve 5 current value from large to small, thus the force value controlling electric proportional pressure control valve 5 is from large to small, and rotary system back pressure from large to small, realizes rotary system smooth starting;
In turning course, make the current value through described electric proportional pressure control valve 5 keep constant, thus the force value controlling electric proportional pressure control valve 5 is constant, realizes the steady of turning course;
In revolution stopped process, the current value through described electric proportional pressure control valve 5 is changed from small to big, and the force value controlling electric proportional pressure control valve 5 is changed from small to big, and impact when constantly response revolution stops, until steadily stop;
Further, when rotary system stops, making the power-off of described electric proportional pressure control valve 5, the first hydraulic fluid port of rotary motor 1 and the direct oil sump tank of oil of the second hydraulic fluid port, to realize rotary system free rotary.
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 (10)
1. a revolution combined control valve, it is characterized in that, comprise: valve body, selector valve (4), electric proportional pressure control valve (5), described rotary motor (1) has the first hydraulic fluid port and the second hydraulic fluid port, described first hydraulic fluid port and the second hydraulic fluid port are communicated with the second actuator port with first actuator port of the second oil circuit with described selector valve (4) through the first oil circuit respectively, and the first return opening of described selector valve (4) is communicated with oil return circuit via described electric proportional pressure control valve (5) with the second return opening; The filler opening of described selector valve (4) is communicated with working connection.
2. turn round combined control valve as claimed in claim 1, it is characterized in that, also comprise rotary buffering valve (6), the first one-way valve (7) and the second one-way valve (8); Described rotary buffering valve (6) is connected in parallel between described first oil circuit and the second oil circuit; The entrance of described first one-way valve (7) is communicated with oil return circuit, and the outlet of described first one-way valve (7) is communicated with the first actuator port of the first hydraulic fluid port of described rotary motor (1) and described selector valve (4); Be communicated with oil return circuit with the entrance of described second one-way valve (8), and the outlet of described second one-way valve (8) is communicated with the second hydraulic fluid port of described rotary motor (1) and the second actuator port of described selector valve (4).
3. turn round combined control valve as claimed in claim 1, it is characterized in that, also comprise the 3rd one-way valve (9) and the 4th one-way valve (10), the entrance of described 3rd one-way valve (9) is communicated with the first return opening of described selector valve (4), and the outlet of described 3rd one-way valve (9) is communicated with oil return circuit through described electric proportional pressure control valve (5); The entrance of described 4th one-way valve (9) is communicated with the second return opening of described selector valve (4), and the outlet of described 4th one-way valve (9) is communicated with oil return circuit through described electric proportional pressure control valve (5).
4. turn round combined control valve as claimed in claim 1, it is characterized in that, also comprise the first solenoid valve (Y1) and the second solenoid valve (Y2), the actuator port of described first solenoid valve (Y1) controls mouth with the left position of described selector valve (4) with right position respectively with the actuator port of the second solenoid valve (Y2) and is communicated with, for controlling described selector valve (4) commutation.
5. turn round combined control valve as claimed in claim 4, it is characterized in that, the 3rd solenoid valve (Y3) also comprising rotary motor break (2) and be communicated with described rotary motor break (2), described valve body comprises motor braking hydraulic fluid port (Br), and the actuator port of described 3rd solenoid valve (Y3) is communicated with the rod chamber of described rotary motor break (2) through described motor braking hydraulic fluid port (Br).
6. turn round combined control valve as claimed in claim 5, it is characterized in that, described valve body also comprises and controls return opening (T ') and control filler opening (P '), the return opening of described 3rd solenoid valve (Y3) is communicated with the control return opening (T ') on described valve body, and the filler opening of described 3rd solenoid valve (Y3) is communicated with the control filler opening (P ') on described valve body; The filler opening of described first solenoid valve (Y1) is communicated with the filler opening of described 3rd solenoid valve (Y3), and the control return opening of the return opening of described first solenoid valve (Y1) and described valve body (T ') be communicated with; The control filler opening of the filler opening of described second solenoid valve (Y2) and described valve body (P ') is communicated with, and the control return opening of the return opening of described second solenoid valve (Y2) and described valve body (T ') be communicated with.
7. a rotary system, is characterized in that, comprises the revolution combined control valve of claim 1 ~ 6 described in any one.
8. a hoist, is characterized in that, comprises rotary system as claimed in claim 7.
9. a controlling method for rotary system as claimed in claim 7, is characterized in that, comprising:
In revolution start-up course, make through described electric proportional pressure control valve (5) current value from large to small, thus the force value controlling electric proportional pressure control valve (5) from large to small, rotary system back pressure from large to small, realizes rotary system smooth starting;
In turning course, make the current value through described electric proportional pressure control valve (5) keep constant, thus the force value controlling electric proportional pressure control valve (5) is constant, realizes the steady of turning course;
In revolution stopped process, the current value through described electric proportional pressure control valve (5) is changed from small to big, and the force value controlling electric proportional pressure control valve (5) is changed from small to big, and impact when constantly response revolution stops, until steadily stop.
10. controlling method as claimed in claim 9, it is characterized in that, also comprise: when rotary system stops, making the power-off of described electric proportional pressure control valve (5), first hydraulic fluid port of rotary motor (1) and the direct oil sump tank of oil of the second hydraulic fluid port, to realize rotary system free rotary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101608.8A CN104675783A (en) | 2015-03-04 | 2015-03-04 | Rotary combined control valve, rotary system, crane and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101608.8A CN104675783A (en) | 2015-03-04 | 2015-03-04 | Rotary combined control valve, rotary system, crane and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104675783A true CN104675783A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510101608.8A Pending CN104675783A (en) | 2015-03-04 | 2015-03-04 | Rotary combined control valve, rotary system, crane and control method |
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| Country | Link |
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| CN (1) | CN104675783A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107150966A (en) * | 2016-03-03 | 2017-09-12 | 利勃海尔工厂埃英根有限公司 | Hydraulic control circuit for crane rotation mechanism |
| CN109911772A (en) * | 2019-04-30 | 2019-06-21 | 安徽柳工起重机有限公司 | Dress receives Vehicular ceiling arm rotary control system and its control method on a kind of crane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0624688A (en) * | 1992-06-30 | 1994-02-01 | Tadano Ltd | Turning control device for crane |
| CN102155447A (en) * | 2011-03-15 | 2011-08-17 | 徐州重型机械有限公司 | Rotating hydraulic system of crane and rotating buffer valve thereof |
| CN102336370A (en) * | 2010-07-26 | 2012-02-01 | 徐州重型机械有限公司 | Rotating hydraulic system of crane and its control method |
| CN102515025A (en) * | 2011-12-29 | 2012-06-27 | 徐州重型机械有限公司 | Superstructure rotary hydraulic control system and crane with same |
| CN204572604U (en) * | 2015-03-04 | 2015-08-19 | 徐州重型机械有限公司 | Revolution combined control valve, rotary system and hoist |
-
2015
- 2015-03-04 CN CN201510101608.8A patent/CN104675783A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0624688A (en) * | 1992-06-30 | 1994-02-01 | Tadano Ltd | Turning control device for crane |
| CN102336370A (en) * | 2010-07-26 | 2012-02-01 | 徐州重型机械有限公司 | Rotating hydraulic system of crane and its control method |
| CN102155447A (en) * | 2011-03-15 | 2011-08-17 | 徐州重型机械有限公司 | Rotating hydraulic system of crane and rotating buffer valve thereof |
| CN102515025A (en) * | 2011-12-29 | 2012-06-27 | 徐州重型机械有限公司 | Superstructure rotary hydraulic control system and crane with same |
| CN204572604U (en) * | 2015-03-04 | 2015-08-19 | 徐州重型机械有限公司 | Revolution combined control valve, rotary system and hoist |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107150966A (en) * | 2016-03-03 | 2017-09-12 | 利勃海尔工厂埃英根有限公司 | Hydraulic control circuit for crane rotation mechanism |
| CN109911772A (en) * | 2019-04-30 | 2019-06-21 | 安徽柳工起重机有限公司 | Dress receives Vehicular ceiling arm rotary control system and its control method on a kind of crane |
| CN109911772B (en) * | 2019-04-30 | 2024-01-30 | 安徽柳工起重机有限公司 | Suspension arm rotation control system for crane loading and unloading vehicle and control method thereof |
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Application publication date: 20150603 |