CN105805064A - Engineering machine and rotation mechanism hydraulic system thereof - Google Patents
Engineering machine and rotation mechanism hydraulic system thereof Download PDFInfo
- Publication number
- CN105805064A CN105805064A CN201610262667.8A CN201610262667A CN105805064A CN 105805064 A CN105805064 A CN 105805064A CN 201610262667 A CN201610262667 A CN 201610262667A CN 105805064 A CN105805064 A CN 105805064A
- Authority
- CN
- China
- Prior art keywords
- hydraulic system
- slew gear
- pressure
- brake
- directional control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
-
- 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
Abstract
The invention discloses a rotation mechanism hydraulic system. The rotation mechanism hydraulic system comprises a rotation motor, a motor brake, a hydraulic-control reversing valve used for controlling the working state of the rotation motor and a brake controller used for controlling the motor brake to be started and stopped. The rotation mechanism hydraulic system further comprises a time delay controller in communication connection with the brake controller, and two pressure detectors used for detecting the pressure of the two hydraulic-control ends of the hydraulic-control reversing valve correspondingly. When the pressure of the hydraulic-control ends is higher than the preset pressure, the pressure detectors send electric signals to the time delay controller, and the time delay controller enables the brake controller to control the motor brake to stop braking after the preset time passes. Thus, stable actions of a rotation mechanism are achieved, and the influences of the technological level of an operator on stability of the actions are reduced. The invention further discloses an engineering machine comprising the rotation mechanism hydraulic system.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of slew gear hydraulic system.Moreover, it relates to a kind of engineering machinery including above-mentioned slew gear hydraulic system.
Background technology
The engineering machinery with slew gear is widely used in job site, and its slew gear generally comprises rotary motor and motor brake, it is necessary to when turning round, and controls hydraulic oil by slewing directional control valve and enters rotary motor realization revolution, starts motor brake simultaneously.But, if motor brake opening time and rotary motor inlet pressure set up time irreversibility, then can cause revolution shake.
In the prior art, revolution is realized by control crank, time synchronized is made by damping adjusting size, but owing to the aperture size of handle and the action maneuver of operator all can affect pivotal movement time to a certain extent, and then can not be Tong Bu with the opening time of motor brake, it is impossible to eliminate revolution shake.
Therefore, how providing a kind of slew gear hydraulic system that can eliminate revolution shake is that those skilled in the art are presently required and solve the technical problem that.
Summary of the invention
It is an object of the invention to provide a kind of slew gear hydraulic system, it is possible to eliminate revolution shake and then make slew gear smooth working.It is a further object of the present invention to provide a kind of engineering machinery including above-mentioned slew gear hydraulic system, it is possible to eliminate revolution shake and then make slew gear smooth working.
For solving above-mentioned technical problem, the present invention provides a kind of slew gear hydraulic system, including rotary motor, motor brake, for controlling the pilot operated directional control valve of described rotary motor duty and for controlling the brake controller of described motor brake start and stop, the delay controller that also includes communicating to connect described brake controller and for detecting two pressure detectors of described pilot operated directional control valve two hydraulic control end pressure respectively, when described hydraulic control end pressure is higher than preset pressure, described pressure detector sends the signal of telecommunication to described delay controller, described delay controller makes described brake controller control the stopping braking of described motor brake through Preset Time.
Preferably, described motor brake is specially liquid braking device, and described brake controller includes the first solenoid electric valve entering described liquid braking device for controlling hydraulic oil, and described delay controller communicates to connect described first solenoid electric valve.
Preferably, described delay controller is specially time-delay relay, and described pressure detector is specially pressure switch.
Preferably, described first solenoid electric valve is specially two-bit triplet solenoid directional control valve, connects oil-in and described liquid braking device when described two-bit triplet solenoid directional control valve obtains electric, connects oil return opening and described liquid braking device during described two-bit triplet solenoid directional control valve dead electricity.
Preferably, it is provided with one-way throttle valve between described two-bit triplet solenoid directional control valve and described liquid braking device.
Preferably, the second solenoid electric valve for controlling described rotary motor two working hole connected state is also included.
Preferably, described second solenoid electric valve is specially 2/2-way solenoid directional control valve.
Preferably, also include for make described first solenoid electric valve and described second solenoid electric valve simultaneously electric hand switch.
The present invention also provides for a kind of engineering machinery, and including slew gear hydraulic system, described slew gear hydraulic system is specially the slew gear hydraulic system described in above-mentioned any one.
Preferably, described engineering machinery is specially crane.
Slew gear hydraulic system provided by the invention, including rotary motor, motor brake, pilot operated directional control valve and brake controller, wherein, pilot operated directional control valve is used for controlling rotary motor duty, and brake controller is used for controlling motor brake start and stop.Also including delay controller and two pressure detectors, wherein delay controller communication connection brake controller, two pressure detectors are for detection pilot operated directional control valve two hydraulic control end pressure respectively.
When needs turn round, high pressure pilot pressure oil can enter the side hydraulic control end of pilot operated directional control valve, when pressure is higher than preset pressure, it is positioned at the pressure detector of this side and can export the signal of telecommunication to delay controller, make brake controller control motor brake through Preset Time and stop braking, now, due to the injection that high pressure pilot pressure before is oily, pilot operated directional control valve has been positioned at relevant work position, hydraulic oil is at rotary motor oil-in build-up pressure, rotary motor starts, and mates with the opening time of motor brake, starts to turn round action.
The unlatching of motor brake is controlled by the control pressure at pilot operated directional control valve two ends, by adjusting the opening time of delay controller control brake controller, make motor brake open to match with rotary motor oil-in foundation startup pressure time, thus realizing slew gear smooth motion, reduce the impact on operation stability of operator's technical merit.
The present invention also provides for a kind of engineering machinery including above-mentioned hydraulic system, and owing to above-mentioned hydraulic system has above-mentioned technique effect, above-mentioned engineering machinery also should have same technique effect, is no longer discussed in detail at this.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of a kind of detailed description of the invention of slew gear hydraulic system provided by the present invention.
Detailed description of the invention
The core of the present invention is to provide a kind of slew gear hydraulic system, it is possible to eliminates revolution shake and then makes slew gear smooth working.Another core of the present invention is to provide a kind of engineering machinery including above-mentioned slew gear hydraulic system, it is possible to eliminates revolution shake and then makes slew gear smooth working.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Refer to the hydraulic schematic diagram of a kind of detailed description of the invention that Fig. 1, Fig. 1 are slew gear hydraulic system provided by the present invention.
The slew gear hydraulic system that the specific embodiment of the invention provides, including rotary motor 1, motor brake 2, pilot operated directional control valve 3 and brake controller 4.Wherein, pilot operated directional control valve 3 is used for controlling rotary motor 1 duty, namely controls whether rotary motor 1 rotates and rotation direction by hydraulic oil, and brake controller 4 is used for controlling motor brake 2 start and stop.Being additionally provided with delay controller and two pressure detectors 5, wherein delay controller communication connection brake controller 4, two pressure detectors 5 are for detection 3 liang of hydraulic control end pressures of pilot operated directional control valve respectively.
Delay controller can be time-delay relay, it is possible to the control for being provided with timer switchs, and after receiving the signal of telecommunication, timer starts timing, after Preset Time, controls switch open and carries out corresponding actions；Pressure detector 5 can be pressure switch, it is possible to the control for being provided with pressure transducer switchs, and detects when pressure reaches preset pressure, controls switch open and carries out corresponding actions.Above-mentioned various mode is all within protection scope of the present invention.
When needs turn round, high pressure pilot pressure oil is entered the side hydraulic control end of liquid reversal valve 3 by a mouth or b mouth, when pressure is higher than preset pressure, it is positioned at the pressure detector 5 of this side and can export the signal of telecommunication to delay controller, make brake controller 4 control motor brake 2 through Preset Time and stop braking, now, due to the injection that high pressure pilot pressure before is oily, pilot operated directional control valve 3 has been positioned at relevant work position, hydraulic oil is at rotary motor 1 oil-in build-up pressure, rotary motor 1 starts, and mates with the opening time of motor brake 2, starts to turn round action.
Specifically, motor brake 2 is specially liquid braking device, and brake controller 4 includes the first solenoid electric valve 41 entering liquid braking device for controlling hydraulic oil, and delay controller communicates to connect the first solenoid electric valve 41.Pressure detector 5 can export the signal of telecommunication to delay controller, through Preset Time, the first solenoid electric valve 41 is made to obtain electric, connection oil-in and liquid braking device, pilot pressure oil enters liquid braking device so that it is stopping braking, motor brake 2 is opened pressure and provided by the guide's oil circuit independent of working connection, pressure is steady, not by slew gear load change fluctuation.Also other modes of braking can be taked, as used motor to control, all within protection scope of the present invention.
Wherein, the first solenoid electric valve 41 is specially two-bit triplet solenoid directional control valve, connects oil-in and liquid braking device when two-bit triplet solenoid directional control valve obtains electric, connects oil return opening and liquid braking device during two-bit triplet solenoid directional control valve dead electricity.In order to improve stability, one-way throttle valve 42 can be set between two-bit triplet solenoid directional control valve and liquid braking device.May be used without other kinds of valve, all within protection scope of the present invention.
The unlatching of motor brake 2 is controlled by the control pressure at pilot operated directional control valve 3 two ends, by adjusting the opening time of delay controller control brake controller 4, make motor brake 2 open to match with rotary motor 1 oil-in foundation startup pressure time, thus realizing slew gear smooth motion, reduce the impact on operation stability of operator's technical merit.
In the hydraulic system that above-mentioned each detailed description of the invention provides; second solenoid electric valve 6 also can be set; for controlling 1 liang of working hole connected state of rotary motor; when the second solenoid electric valve 6 obtains electric work; make the first solenoid electric valve 41 simultaneously electric work; motor brake 2 is opened while making the connection of rotary motor 1 two ends; under arm and load conduct oneself with dignity lateral force effect, arm is rocked to directly over suspension hook; protection arm is not impaired by excessive side load, makes slew gear have free sliding and automatic centering function.
Specifically; second solenoid electric valve 6 is 2/2-way solenoid directional control valve; and connect a hydraulic control connection reversal valve; when 2/2-way solenoid directional control valve obtains electric; hydraulic oil enters hydraulic control connection reversal valve; it is made to connect the two ends of rotary motor 1, it is possible to adopt other kinds of valve, all within protection scope of the present invention.
For the ease of realizing automatic centering, hand switch can be set, make the first solenoid electric valve 41 and the second solenoid electric valve 6 simultaneously when pressing electric, it is simple to manipulation, it is possible to according to practical situation realize automatization arrange.In the hydraulic system that the specific embodiment of the invention provides, also in order to improve result of use, the valves such as overflow valve, check valve, choke valve and shuttle valve can be increased, all within protection scope of the present invention.
Except above-mentioned slew gear hydraulic system, the specific embodiment of the present invention also provides for a kind of engineering machinery including above-mentioned slew gear hydraulic system, and the structure of these other each several parts of engineering machinery refer to prior art, repeats no more herein.
Specifically, above-mentioned engineering machinery can be crane.
Above engineering machinery provided by the present invention and slew gear hydraulic system thereof are described in detail.Principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to the present invention carries out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
Claims (10)
1. a slew gear hydraulic system, including rotary motor (1), motor brake (2), for controlling the pilot operated directional control valve (3) of described rotary motor (1) duty and being used for controlling the brake controller (4) of described motor brake (2) start and stop, it is characterized in that, also include the delay controller communicating to connect described brake controller (4) and two pressure detectors (5) being used for detecting respectively described pilot operated directional control valve (3) two hydraulic control end pressure, when described hydraulic control end pressure is higher than preset pressure, described pressure detector (5) sends the signal of telecommunication to described delay controller, described delay controller makes described brake controller (4) control described motor brake (2) stopping braking through Preset Time.
2. slew gear hydraulic system according to claim 1, it is characterised in that described delay controller is specially time-delay relay, and described pressure detector (5) is specially pressure switch.
3. slew gear hydraulic system according to claim 1, it is characterized in that, described motor brake (2) is specially liquid braking device, described brake controller (4) includes the first solenoid electric valve (41) entering described liquid braking device for controlling hydraulic oil, and described delay controller communicates to connect described first solenoid electric valve (41).
4. slew gear hydraulic system according to claim 3, it is characterized in that, described first solenoid electric valve (41) is specially two-bit triplet solenoid directional control valve, connect oil-in and described liquid braking device when described two-bit triplet solenoid directional control valve obtains electric, during described two-bit triplet solenoid directional control valve dead electricity, connect oil return opening and described liquid braking device.
5. slew gear hydraulic system according to claim 4, it is characterised in that be provided with one-way throttle valve (42) between described two-bit triplet solenoid directional control valve and described liquid braking device.
6. the slew gear hydraulic system according to claim 2 to 5 any one, it is characterised in that also include the second solenoid electric valve (6) for controlling described rotary motor (1) two working hole connected state.
7. slew gear hydraulic system according to claim 6, it is characterised in that described second solenoid electric valve (6) is specially 2/2-way solenoid directional control valve.
8. slew gear hydraulic system according to claim 7, it is characterised in that also include for make described first solenoid electric valve (41) and described second solenoid electric valve (6) simultaneously electric hand switch.
9. an engineering machinery, including slew gear hydraulic system, it is characterised in that described slew gear hydraulic system is specially the slew gear hydraulic system described in claim 1 to 8 any one.
10. engineering machinery according to claim 9, it is characterised in that described engineering machinery is specially crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610262667.8A CN105805064B (en) | 2016-04-25 | 2016-04-25 | Engineering machinery and its swing mechanism hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610262667.8A CN105805064B (en) | 2016-04-25 | 2016-04-25 | Engineering machinery and its swing mechanism hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105805064A true CN105805064A (en) | 2016-07-27 |
| CN105805064B CN105805064B (en) | 2018-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610262667.8A Active CN105805064B (en) | 2016-04-25 | 2016-04-25 | Engineering machinery and its swing mechanism hydraulic system |
Country Status (1)
| Country | Link |
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| CN (1) | CN105805064B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629396A (en) * | 2016-12-23 | 2017-05-10 | 徐州重型机械有限公司 | Electro-hydraulic union speed adjustment rotary system for crane and control method |
| CN108005988A (en) * | 2018-01-29 | 2018-05-08 | 徐工集团工程机械有限公司 | Delay braking control valve, hydraulic system and excavator |
| CN108757613A (en) * | 2018-06-20 | 2018-11-06 | 徐州重型机械有限公司 | Rotary control valve group, rotary control system and crane |
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| CN105351276A (en) * | 2015-12-03 | 2016-02-24 | 徐州重型机械有限公司 | Rotation hydraulic control system and method and crane |
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| JP2001027202A (en) * | 1999-07-15 | 2001-01-30 | Hitachi Constr Mach Co Ltd | Brake circuit device for turning hydraulic motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629396A (en) * | 2016-12-23 | 2017-05-10 | 徐州重型机械有限公司 | Electro-hydraulic union speed adjustment rotary system for crane and control method |
| CN106629396B (en) * | 2016-12-23 | 2018-05-18 | 徐州重型机械有限公司 | A kind of crane electro-hydraulic joint speed governing rotary system and control method |
| CN108005988A (en) * | 2018-01-29 | 2018-05-08 | 徐工集团工程机械有限公司 | Delay braking control valve, hydraulic system and excavator |
| CN108005988B (en) * | 2018-01-29 | 2023-12-08 | 江苏徐工工程机械研究院有限公司 | Delay brake control valve, hydraulic system and excavator |
| CN108757613A (en) * | 2018-06-20 | 2018-11-06 | 徐州重型机械有限公司 | Rotary control valve group, rotary control system and crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105805064B (en) | 2018-08-07 |
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Effective date of registration: 20200930 Address after: No.202 Xuanfu street, Xuanhua District, Zhangjiakou, Hebei Province Patentee after: Hebei Leisa Heavy Construction Machinery Co., Ltd Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
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