CN103523687A - Supporting leg extension control method, controller and control system, and crane - Google Patents
Supporting leg extension control method, controller and control system, and crane Download PDFInfo
- Publication number
- CN103523687A CN103523687A CN201310449773.3A CN201310449773A CN103523687A CN 103523687 A CN103523687 A CN 103523687A CN 201310449773 A CN201310449773 A CN 201310449773A CN 103523687 A CN103523687 A CN 103523687A
- Authority
- CN
- China
- Prior art keywords
- supporting leg
- pressure
- gravity
- leg
- bears
- 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
Links
Images
Landscapes
- Jib Cranes (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a supporting leg extension control method, a supporting leg extension controller and a supporting leg extension control system, and a crane. The supporting leg extension control method comprises the following steps: according to pressure information detected by a unit for detecting pressures of an upper chamber and a lower chamber of a supporting leg, determining the gravity borne by the supporting leg; calculating the change rate of the gravity borne by the supporting leg, and the change rate of the gravity borne when the supporting leg extends out surpasses a first threshold, determining that the supporting leg extends out completely; and controlling the supporting leg to automatically retract for a given distance, and locking the extending action of the supporting leg. Through the supporting leg extension control method, the supporting leg extension controller and the supporting leg extension control system, a pressureout problem of the supporting leg can be prevented, detected or eliminated, thus avoiding inaccurate detection of a supporting leg strength caused by pressureout and facilitating safe control of a whole vehicle.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of landing leg stretching control method, controller, control system and hoisting crane.
Background technology
Generally speaking, in the epicoele and cavity of resorption of crane support, two different pressure sensors are set, the numerical value gathering by these two pressure sensors, determines the pressure that supporting leg bears.But when crane support reaches maxim, because rod chamber hydraulic oil is excluded entirely, rodless cavity pressure equals driving pressure, this will cause and build the pressure.And now, by upper and lower cavity pressure sensor calculate gravity be far smaller than the actual load-bearing of supporting leg, be unfavorable for thus car load safety control, and then impact lifting performance.
Summary of the invention
In view of this, the present invention proposes a kind of landing leg stretching control method, controller, control system and hoisting crane, occurs building the pressure preventing, and facilitates the safety control of car load.
First aspect, the invention discloses a kind of landing leg stretching control method, comprises the steps:, according to the pressure information of upper and lower chamber pressure of support leg detecting unit detection, to determine gravity that supporting leg bears; Calculate the rate of change that described supporting leg bears gravity, when the rate of change that bears gravity when described supporting leg when stretching out surpasses default first threshold, determine that described supporting leg stretches out completely; Control supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.
Further, in above-mentioned landing leg stretching control method, after control supporting leg automatic retraction is to set a distance, if when the gravity that supporting leg bears detecting by upper and lower chamber pressure of support leg detecting unit surpasses default Second Threshold, sending alarm message, there is supporting leg and builds the pressure in prompting.
Further, in above-mentioned landing leg stretching control method, when generation supporting leg builds the pressure, adopt manual operation mode, supporting leg is retracted, remove extend action locking, elimination builds the pressure.
Further, in above-mentioned landing leg stretching control method, the stretching out by the first solenoid control of described supporting leg; The retraction of described supporting leg is by the second solenoid control.
Further, in above-mentioned landing leg stretching control method, described pressure-detecting device is pressure sensor or strain gauge.
The prevention that supporting leg of the present invention builds the pressure, detection and removing method calculate by pressure sensing cell the Gravity changer rate that supporting leg bears, when the Gravity changer rate of bearing when supporting leg is done extend action surpasses certain value, can determine that supporting leg stretches out completely, at this moment, for fear of building the pressure, control supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.As can be seen here, a leg strength that can well prevent supporting leg to build the pressure to cause by the present invention detects inaccurate problem, facilitates the safety control of car load.
In addition,, after controlling supporting leg automatic retraction distance to a declared goal, if when the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears still surpasses Second Threshold, send alarm message, described alarm message is used for pointing out generation supporting leg to build the pressure.As can be seen here, by the present invention, can also detect and build the pressure easily, to facilitate, to building the pressure, eliminate.
In addition, when generation supporting leg builds the pressure, adopt M/C, supporting leg is retracted, remove extend action locking, elimination builds the pressure.As can be seen here, the present invention not only can prevent, detect and build the pressure, and can also solve and build the pressure, and further improves car load safety control performance.
Second aspect, the present invention also provides a kind of controller, the detection building the pressure for supporting leg and elimination, it comprises: computing module, Gravity changer rate computing module and automatic retraction and locking signal are sent module.Wherein, the pressure information of computing module for detecting according to upper and lower chamber pressure of support leg detecting unit, calculates the gravity that supporting leg bears; Gravity changer rate computing module is for calculating the rate of change that described supporting leg bears gravity, when the rate of change that bears gravity when described supporting leg when stretching out surpasses default first threshold, determines that described supporting leg stretches out completely; Automatic retraction and locking signal are sent module for controlling supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.
Further, above-mentioned controller also comprises: alarm message sends module, for after control supporting leg automatic retraction is to set a distance, when if the gravity that supporting leg bears detecting by upper and lower chamber pressure of support leg detecting unit surpasses default Second Threshold, send alarm message, described alarm message is used for pointing out generation supporting leg to build the pressure.
Further, above-mentioned controller also comprises that alarm message sends module, for after control supporting leg automatic retraction is to set a distance, when if the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears surpasses Second Threshold, send alarm message, described alarm message is used for pointing out generation supporting leg to build the pressure.
Controller of the present invention stretches out completely by calculating the Gravity changer rate judgement of bearing when supporting leg is done extend action supporting leg being no, if,, for fear of the problem building the pressure, send and control supporting leg automatic retraction to the control signal of set a distance, send the signal of the extend action of locking supporting leg simultaneously.As can be seen here, by the present invention, can well prevent supporting leg caused the leg strength that build the pressure to detect inaccurate problem, facilitate the safety control of car load.
In addition, can also in controller, increase alarm message and send module, for after controlling supporting leg automatic retraction distance to a declared goal, when if the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears still surpasses Second Threshold, send alarm message, described alarm message is used for pointing out generation supporting leg to build the pressure.As can be seen here, by the present invention, can also detect and build the pressure easily, to facilitate, to building the pressure, eliminate.
The third aspect, the present invention also provides a kind of control system, and the prevention building the pressure for supporting leg and detection, comprising: the first pressure sensing cell, the second pressure sensing cell, the first electromagnetic valve, the second electromagnetic valve and controller.Wherein, the first pressure sensing cell is for detection of epicoele pressure of support leg; The second pressure sensing cell is for detection of cavity of resorption pressure of support leg; The first electromagnetic valve is for controlling the operation of stretching out of supporting leg; The second electromagnetic valve is for controlling the retraction operation of supporting leg; Controller comprises first signal input end, secondary signal input end, first signal mouth and secondary signal mouth; Wherein, described first signal input end is connected with described the first pressure sensing cell data, and described secondary signal input end is connected with described the second pressure sensing cell data; Described first signal mouth is electrically connected to described the first electromagnetic valve; Described secondary signal mouth is electrically connected to described the second electromagnetic valve; And described controller is used for calculating according to the pressure information of described the first pressure sensing cell and described the second pressure sensing cell detection gravity that supporting leg bears, and calculates the rate of change of gravity that supporting leg bears; When the rate of change of the gravity bearing surpasses first threshold, determine that supporting leg stretches out completely when supporting leg is done extend action; Control described the second electromagnetic valve, make supporting leg automatic retraction to set a distance, control the extend action of described the first electromagnetic valve locking supporting leg simultaneously.
Further, in above-mentioned control system, described controller also comprises the 3rd signal output part; Described control system also comprises warning device, the signal input part of described warning device is connected with described the 3rd signal output part, for after control supporting leg automatic retraction is to set a distance, when if the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears still surpasses Second Threshold, send alerting signal, described alarm message is used for pointing out generation supporting leg to build the pressure.
Control system of the present invention detects the pressure of supporting leg upper and lower cavity by pressure sensing cell, by controller, calculate the Gravity changer rate that supporting leg bears, the Gravity changer rate of bearing when supporting leg is done extend action, when if this Gravity changer rate surpass to give surpasses certain value, can determine that supporting leg stretches out completely, at this moment, for fear of the problem building the pressure, control supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.As can be seen here, the problem that can well prevent supporting leg to build the pressure by the present invention, facilitates the safety control of car load.
In addition, control system can further include warning device, this warning device is for after controlling supporting leg automatic retraction distance to a declared goal, when if the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears still surpasses certain value, send alarm message, sound and light alarm signal for example, alarm message is used for pointing out and supporting leg occurs builds the pressure.As can be seen here, by the present invention, the phenomenon that builds the pressure can also be detected easily, to facilitate, to building the pressure, eliminate.
Fourth aspect, the invention also discloses a kind of hoisting crane, and this hoisting crane is provided with above-mentioned control system.Because control system has above-mentioned technique effect, so there is the hoisting crane of above-mentioned technique effect, also there is above-mentioned technique effect, the present invention does not repeat them here.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of steps of landing leg stretching control method the first embodiment of the present invention;
Fig. 2 is the flow chart of steps of landing leg stretching control method the second embodiment of the present invention;
Fig. 3 is the flow chart of steps of landing leg stretching control method the 3rd embodiment of the present invention
Fig. 4 is the structured flowchart of controller the first embodiment of the present invention;
Fig. 5 is the structured flowchart of controller the second embodiment of the present invention;
Fig. 6 is the structured flowchart of control system the first embodiment of the present invention;
Fig. 7 is the structured flowchart of control system the second embodiment of the present invention.
The specific embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
With reference to Fig. 1, Fig. 1 is the flow chart of steps of landing leg stretching control method embodiment of the present invention, and the method comprises the steps:
Step S01: the pressure information detecting according to upper and lower chamber pressure of support leg detecting unit, determine gravity that supporting leg bears;
Step S02: the rate of change that calculates gravity that supporting leg bears;
Step S03: judge that whether the rate of change that supporting leg bears gravity when stretching out surpasses default first threshold, determines that described supporting leg stretches out completely; If so, perform step S04; If not, perform step S05;
Step S04: determine that supporting leg stretches out completely; Control supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously;
Step S05: can continue to control supporting leg and carry out extend action.
Can find out, the prevention that the present embodiment supporting leg builds the pressure, detection and removing method calculate by pressure sensing cell the Gravity changer rate that supporting leg bears, when the Gravity changer rate of bearing when supporting leg is done extend action surpasses certain value, can determine that supporting leg stretches out completely, at this moment, for fear of the problem building the pressure, control supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.As can be seen here, by the present invention, can well prevent supporting leg caused the leg strength that build the pressure to detect inaccurate problem, facilitate the safety control of car load.
With reference to Fig. 2, Fig. 2 has provided another embodiment of landing leg stretching control method of the present invention.
Step S01: by upper and lower chamber pressure of support leg detecting unit, determine gravity that supporting leg bears;
Step S02: calculate the Gravity changer rate that supporting leg bears;
Step S03: judge whether the Gravity changer rate of bearing when supporting leg is done extend action surpasses predetermined first threshold; If so, perform step S04; If not, perform step S05;
Step S04: determine that supporting leg stretches out completely; Control supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously;
Step S05: can continue to control supporting leg and carry out extend action;
Step S06: after controlling supporting leg automatic retraction distance to a declared goal, if the gravity that the supporting leg detecting by upper and lower chamber pressure of support leg detecting unit bears judges whether to surpass Second Threshold? if so, perform step S07;
Step S07: send alarm message, this alarm message is used for pointing out generation supporting leg to build the pressure.
As can be seen here, by the present embodiment, can also detect and build the pressure easily, to facilitate, to building the pressure, eliminate.
Further, if when generation supporting leg builds the pressure, adopt M/C, supporting leg is retracted, remove extend action locking, elimination builds the pressure.
As can be seen here, the present embodiment, when building the pressure problem, by M/C, has solved the problem that supporting leg builds the pressure.Therefore, the present invention not only can prevent, detect and build the pressure, and can also solve and build the pressure, and further improves car load safety control performance.
With reference to Fig. 3, Fig. 3 is an embodiment of landing leg stretching control method of the present invention.Comprise the steps:
Carry out analysis, if can normal running, judge whether the Gravity changer rate K1 that supporting leg bears is greater than first threshold data1; The control signal that if so, the first electromagnetic valve (extend action electromagnetic valve) control signal is set is 0, the second electromagnetic valve (retract action electromagnetic valve) is 1.And, start time meter T1 and carry out timing, judge that T1 is greater than specified time data2? if not, continue timing; The control signal that if so, the first electromagnetic valve (extend action electromagnetic valve) control signal is set is 0, the second electromagnetic valve (retract action electromagnetic valve) is 0, and extend action is locked.Now, if the gravity G1 that supporting leg bears is greater than given Second Threshold data3, sends data flicker order and report to the police, meanwhile, adopt M/C, carry out supporting leg contracting action, and make supporting leg stretch action release.
In above-described embodiment, stretching out with the retract action of supporting leg of supporting leg can be controlled by electromagnetic valve.Pressure sensing cell can be pressure sensor, can be also strain gauge.
With reference to Fig. 4, the structured flowchart that Fig. 4 is controller of the present invention, comprising: computing module 40, Gravity changer rate computing module 41 and automatic retraction and locking signal are sent module 42.
Wherein, the pressure information of computing module 40 for detecting according to upper and lower chamber pressure of support leg detecting unit, calculates the gravity that supporting leg bears; Gravity changer rate computing module 41 bears the rate of change of gravity for calculating described supporting leg, when the rate of change that bears gravity when described supporting leg when stretching out surpasses first threshold, determine that described supporting leg stretches out completely; Automatic retraction and locking signal are sent module 42 for controlling supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.
The present embodiment controller stretches out completely by calculating the Gravity changer rate judgement of bearing when supporting leg is done extend action supporting leg being no, if, for fear of the problem building the pressure, send and control supporting leg automatic retraction to the control signal of set a distance, send the signal of the extend action of locking supporting leg simultaneously.As can be seen here, by the present invention, can well prevent supporting leg caused the leg strength that build the pressure to detect inaccurate problem, facilitate the safety control of car load.
With reference to Fig. 5, Fig. 5 is the structured flowchart of controller the second embodiment of the present invention, comprising: computing module 50, Gravity changer rate computing module 51, automatic retraction and locking signal is sent module 52 and alarm message sends module 53.
Wherein, the pressure information of computing module 50 for detecting according to upper and lower chamber pressure of support leg detecting unit, calculates the gravity that supporting leg bears; Gravity changer rate computing module 51 bears the rate of change of gravity for calculating described supporting leg, when the rate of change that bears gravity when described supporting leg when stretching out surpasses first threshold, determine that described supporting leg stretches out completely; Automatic retraction and locking signal are sent module 52 for controlling supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.Alarm message sends module 53 for after controlling supporting leg automatic retraction distance to a declared goal, when if the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears surpasses Second Threshold, send alarm message, alarm message is used for pointing out generation supporting leg to build the pressure.
Can find out, the present embodiment increases alarming information and sends module in controller, for after controlling supporting leg automatic retraction distance to a declared goal, when if the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears still surpasses Second Threshold, send alarm message, alarm message is used for pointing out generation supporting leg to build the pressure.As can be seen here, by the present invention, can also detect and build the pressure easily, to facilitate, to building the pressure, eliminate.
The third aspect, the present invention also provides a kind of embodiment of control system, the prevention building the pressure for supporting leg and detection.
With reference to Fig. 6, this embodiment control system comprises: the first pressure sensing cell 61, the second pressure sensing cell 62, the first electromagnetic valve 63, the second electromagnetic valve 64 and controller 60.
Wherein, the first pressure sensing cell 61 is for detection of epicoele pressure of support leg; The second pressure sensing cell 62 is for detection of cavity of resorption pressure of support leg; The first electromagnetic valve 63 is for controlling the operation of stretching out of supporting leg; The second electromagnetic valve 64 is for controlling the retraction operation of supporting leg; Controller 60 comprises first signal input end, secondary signal input end, first signal mouth and secondary signal mouth; Wherein, first signal input end is connected with the first pressure sensing cell 61 data, and secondary signal input end is connected with the second pressure sensing cell 62 data; First signal mouth is electrically connected to the first electromagnetic valve 63; Secondary signal mouth is electrically connected to the second electromagnetic valve 64; And controller 60 is for calculating by the first pressure sensing cell 61 and the second pressure sensing cell 62 gravity that supporting leg bears, and calculate the Gravity changer rate that supporting leg bears; When the Gravity changer rate of bearing surpasses first threshold, determine that supporting leg stretches out completely when supporting leg is done extend action; Control the second electromagnetic valve 64, make supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.
For easy to operate, controller is also connected with supporting leg operation integrated panel 65.
The present embodiment control system detects the pressure of supporting leg upper and lower cavity by pressure sensing cell, by controller, calculate the Gravity changer rate that supporting leg bears, the Gravity changer rate of bearing when supporting leg is done extend action, when if this Gravity changer rate surpasses given value, can determine that supporting leg stretches out completely, at this moment, for fear of the problem building the pressure, control supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.As can be seen here, the problem that can well prevent supporting leg to build the pressure by the present invention, facilitates the safety control of car load.
With reference to Fig. 7, Fig. 7 provides the second embodiment of control system.This control system embodiment comprises the first pressure sensing cell 71, the second pressure sensing cell 72, the first electromagnetic valve 73, the second electromagnetic valve 74, warning device 76 and controller 70.
Wherein, the first pressure sensing cell 71 is for detection of epicoele pressure of support leg; The second pressure sensing cell 72 is for detection of cavity of resorption pressure of support leg; The first electromagnetic valve 73 is for controlling the operation of stretching out of supporting leg; The second electromagnetic valve 74 is for controlling the retraction operation of supporting leg; Controller 70 comprises first signal input end, secondary signal input end, first signal mouth and secondary signal mouth; Wherein, first signal input end is connected with the first pressure sensing cell 71 data, and secondary signal input end is connected with the second pressure sensing cell 72 data; First signal mouth is electrically connected to the first electromagnetic valve 73; Secondary signal mouth is electrically connected to the second electromagnetic valve 74; And controller 70 is for calculating by the first pressure sensing cell 71 and the second pressure sensing cell 72 gravity that supporting leg bears, and calculate the Gravity changer rate that supporting leg bears; When the Gravity changer rate of bearing surpasses first threshold, determine that supporting leg stretches out completely when supporting leg is done extend action; Control the second electromagnetic valve 74, make supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.
And controller 70 also comprises the 3rd signal output part; Control system also comprises warning device 76, the signal input part of warning device 76 is connected with the 3rd signal output part, for after controlling supporting leg automatic retraction distance to a declared goal, when if the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears still surpasses Second Threshold, send alerting signal (as, sound and light signal), alerting signal is used for pointing out generation supporting leg to build the pressure.
For easy to operate, controller is also connected with supporting leg operation integrated panel 75, and warning device 76 also can be integrated on this supporting leg operation integrated panel 75.
As can be seen here, by the present invention, the phenomenon that builds the pressure can also be detected easily, to facilitate, to building the pressure, eliminate.
Fourth aspect, the invention also discloses a kind of hoisting crane, and this hoisting crane is provided with above-mentioned control system.Because control system has above-mentioned technique effect, so there is the hoisting crane of above-mentioned technique effect, also there is above-mentioned technique effect, the present invention does not repeat them here.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a landing leg stretching control method, is characterized in that, comprises the steps:
The pressure information detecting according to upper and lower chamber pressure of support leg detecting unit, determines gravity that supporting leg bears;
Calculate the rate of change that described supporting leg bears gravity, when the rate of change that bears gravity when described supporting leg when stretching out surpasses default first threshold, determine that described supporting leg stretches out completely;
Control supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.
2. landing leg stretching control method according to claim 1, is characterized in that,
After control supporting leg automatic retraction is to set a distance, if when the gravity that supporting leg bears detecting by upper and lower chamber pressure of support leg detecting unit surpasses default Second Threshold, send alarm message, there is supporting leg and build the pressure in prompting.
3. landing leg stretching control method according to claim 2, is characterized in that,
When generation supporting leg builds the pressure, adopt manual operation mode, supporting leg is retracted, remove extend action locking, elimination builds the pressure.
4. landing leg stretching control method according to claim 3, is characterized in that,
Stretching out by the first solenoid control of described supporting leg;
The retraction of described supporting leg is by the second solenoid control.
5. according to claim 4 landing leg stretching control method, it is characterized in that,
Described pressure-detecting device is pressure sensor or strain gauge.
6. a controller, the detection building the pressure for supporting leg and elimination, is characterized in that, comprising:
Computing module, for the pressure information detecting according to upper and lower chamber pressure of support leg detecting unit, calculates the gravity that supporting leg bears;
Gravity changer rate computing module, bears the rate of change of gravity for calculating described supporting leg, when the rate of change that bears gravity when described supporting leg when stretching out surpasses default first threshold, determine that described supporting leg stretches out completely;
Automatic retraction and locking signal are sent module, for controlling supporting leg automatic retraction to set a distance, lock the extend action of supporting leg simultaneously.
7. controller according to claim 6, is characterized in that, also comprises:
Alarm message sends module, for after control supporting leg automatic retraction is to set a distance, if when the gravity that supporting leg bears detecting by upper and lower chamber pressure of support leg detecting unit surpasses default Second Threshold, send alarm message, described alarm message is used for pointing out generation supporting leg to build the pressure.
8. a control system, the prevention building the pressure for supporting leg and detection, is characterized in that, comprising:
The first pressure sensing cell, for detection of epicoele pressure of support leg;
The second pressure sensing cell, for detection of cavity of resorption pressure of support leg;
The first electromagnetic valve, for controlling the operation of stretching out of supporting leg;
The second electromagnetic valve, for controlling the retraction operation of supporting leg;
Controller, comprises first signal input end, secondary signal input end, first signal mouth and secondary signal mouth; Wherein, described first signal input end is connected with described the first pressure sensing cell data, and described secondary signal input end is connected with described the second pressure sensing cell data; Described first signal mouth is electrically connected to described the first electromagnetic valve; Described secondary signal mouth is electrically connected to described the second electromagnetic valve;
And described controller is used for calculating according to the pressure information of described the first pressure sensing cell and described the second pressure sensing cell detection gravity that supporting leg bears, and calculates the rate of change of gravity that supporting leg bears; When the rate of change of the gravity bearing surpasses first threshold, determine that supporting leg stretches out completely when supporting leg is done extend action; Control described the second electromagnetic valve, make supporting leg automatic retraction to set a distance, control the extend action of described the first electromagnetic valve locking supporting leg simultaneously.
9. control system according to claim 8, is characterized in that,
Described controller also comprises the 3rd signal output part;
Described control system also comprises warning device, the signal input part of described warning device is connected with described the 3rd signal output part, for after control supporting leg automatic retraction is to set a distance, when if the gravity that the supporting leg obtaining by upper and lower chamber pressure of support leg detecting unit bears still surpasses Second Threshold, send alerting signal, described alarm message is used for pointing out generation supporting leg to build the pressure.
10. a hoisting crane, is characterized in that, described hoisting crane is provided with control system as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310449773.3A CN103523687B (en) | 2013-09-27 | 2013-09-27 | Control system and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310449773.3A CN103523687B (en) | 2013-09-27 | 2013-09-27 | Control system and crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103523687A true CN103523687A (en) | 2014-01-22 |
| CN103523687B CN103523687B (en) | 2016-08-17 |
Family
ID=49926118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310449773.3A Active CN103523687B (en) | 2013-09-27 | 2013-09-27 | Control system and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103523687B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437030A (en) * | 2018-12-10 | 2019-03-08 | 中联重科股份有限公司 | Engineering machinery anti-rollover control method and device and engineering machinery |
| CN109630833A (en) * | 2018-11-13 | 2019-04-16 | 韩超 | A kind of textile machinery support device |
| CN113223876A (en) * | 2021-04-14 | 2021-08-06 | 国网河北省电力有限公司保定供电分公司 | Switch control device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0797184A (en) * | 1993-09-30 | 1995-04-11 | Komatsu Mec Corp | Safety device for crane |
| JPH08188384A (en) * | 1994-12-28 | 1996-07-23 | Yutani Heavy Ind Ltd | Outrigger alarm device |
| JPH1072187A (en) * | 1996-08-29 | 1998-03-17 | Sumitomo Constr Mach Co Ltd | Turn over preventing device for mobile crane |
| JPH10230824A (en) * | 1997-02-18 | 1998-09-02 | Komatsu Ltd | Outrigger automatic stretching device of work vehicle and automatic stretching method |
| JPH11171476A (en) * | 1997-12-09 | 1999-06-29 | Tokimec Inc | Vehicle having detecting device for preventing overturning and outrigger |
| JPH11286391A (en) * | 1998-03-31 | 1999-10-19 | Aichi Corp | Jack supporting force detection device for work vehicle |
| JP2006282301A (en) * | 2005-03-31 | 2006-10-19 | Aichi Corp | Safety device for outrigger |
| CN102079298B (en) * | 2010-12-28 | 2013-06-05 | 三一重工股份有限公司 | Mobile engineering machine and control system of support leg thereof |
-
2013
- 2013-09-27 CN CN201310449773.3A patent/CN103523687B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0797184A (en) * | 1993-09-30 | 1995-04-11 | Komatsu Mec Corp | Safety device for crane |
| JPH08188384A (en) * | 1994-12-28 | 1996-07-23 | Yutani Heavy Ind Ltd | Outrigger alarm device |
| JPH1072187A (en) * | 1996-08-29 | 1998-03-17 | Sumitomo Constr Mach Co Ltd | Turn over preventing device for mobile crane |
| JPH10230824A (en) * | 1997-02-18 | 1998-09-02 | Komatsu Ltd | Outrigger automatic stretching device of work vehicle and automatic stretching method |
| JPH11171476A (en) * | 1997-12-09 | 1999-06-29 | Tokimec Inc | Vehicle having detecting device for preventing overturning and outrigger |
| JPH11286391A (en) * | 1998-03-31 | 1999-10-19 | Aichi Corp | Jack supporting force detection device for work vehicle |
| JP2006282301A (en) * | 2005-03-31 | 2006-10-19 | Aichi Corp | Safety device for outrigger |
| CN102079298B (en) * | 2010-12-28 | 2013-06-05 | 三一重工股份有限公司 | Mobile engineering machine and control system of support leg thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630833A (en) * | 2018-11-13 | 2019-04-16 | 韩超 | A kind of textile machinery support device |
| CN109437030A (en) * | 2018-12-10 | 2019-03-08 | 中联重科股份有限公司 | Engineering machinery anti-rollover control method and device and engineering machinery |
| CN113223876A (en) * | 2021-04-14 | 2021-08-06 | 国网河北省电力有限公司保定供电分公司 | Switch control device |
| CN113223876B (en) * | 2021-04-14 | 2023-03-21 | 国网河北省电力有限公司保定供电分公司 | Switch control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103523687B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9358966B2 (en) | Hydraulic accumulator pre-charge pressure detection for hydraulic braking system | |
| CN101457589B (en) | Construction machine | |
| US20140330481A1 (en) | Device and Method for Ascertaining and Monitoring an Assembled Counterweight on a Crane | |
| CN102383776B (en) | Drill rod with rod monitoring method, controller and system of drilling machine and drilling machine | |
| KR100921277B1 (en) | Air brake system and method for controlling the same | |
| CN103523687A (en) | Supporting leg extension control method, controller and control system, and crane | |
| CN207659025U (en) | A kind of automatic loading and unloading loading system based on unmanned fork lift | |
| CN102303800A (en) | Mine hoist disc brake detecting device and detecting method thereof | |
| EP2765028A3 (en) | System and method for preventing power head rollover during a dump operation by monitoring front struts | |
| JP5926820B2 (en) | Brake operation detection device and method for confirming operation of brake operation member of brake system | |
| CN203611660U (en) | Tire pressure monitoring device for vehicle and vehicle adopting same | |
| AU2022201617A1 (en) | Lubricant pumping system | |
| EP2905479B1 (en) | System and method of determining an accumulator status | |
| CN102343904A (en) | Alarm device of hydraulic brake system and alarm method | |
| US20130284532A1 (en) | Secondary steering system with margin pressure detection | |
| US10293797B2 (en) | Method for avoiding false excitations of a slip control system of a brake system of a vehicle | |
| CN103285549B (en) | Method, equipment and system for monitoring load of fire fighting truck and fire fighting truck | |
| CN105034441A (en) | Overload detection method for press machine | |
| CN111380505A (en) | Inclination detection device, inclination detection system and inclination detection method suitable for scaffold | |
| US20140306169A1 (en) | Thin jack device for bridge lifting | |
| CN103879881A (en) | Crane hook safe operation control method, device and system and crane | |
| CN106678127A (en) | Hydraulic extension rod with spring distance measurement function | |
| WO2012065769A3 (en) | System and method for detecting a brake circuit failure | |
| CN211712543U (en) | Fault early warning system for side forklift and jack | |
| CN203767870U (en) | Hanging weight limit system of hanger pin shaft sensor positioned on side surface of highway container |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |