CN201165454Y - Arm support sequential telescopic security control apparatus - Google Patents
Arm support sequential telescopic security control apparatus Download PDFInfo
- Publication number
- CN201165454Y CN201165454Y CNU2008200692318U CN200820069231U CN201165454Y CN 201165454 Y CN201165454 Y CN 201165454Y CN U2008200692318 U CNU2008200692318 U CN U2008200692318U CN 200820069231 U CN200820069231 U CN 200820069231U CN 201165454 Y CN201165454 Y CN 201165454Y
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- jib
- arm
- extension
- length sensor
- sensor
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Abstract
The utility model relates to a jib stand telescopic control device of a construction vehicle, in particular to a safety control device for the sequential extension of a jib stand. A telescopic jib full-length sensor is installed on a basic jib, and the other end of the extension jib full-length sensor is connected with an apical node jib through a sensor rope; the extension jib full-length sensor is connected with a moment limiter host machine which is connected with a switchover magnet valve; a second jib length sensor is connected on the basic jib, and a jib extension detection switch and a jib retraction detection switch are arranged on a hydraulic pipeline; the second jib length sensor, the jib extension detection switch and the jib retraction detection switch are all connected with the moment limiter host machine. The safety control device has the advantages that the jib safety control device has simple structure; the jib can automatically perform the extension and retraction operation according to correct control flow sequence during the extension and retraction operation; the main jib and the extension cylinder are effectively protected, the bearing capacity of the main jib is ensured, the requirement of the hosting performance is met, and possible risks caused by manual operation are fundamentally prevented.
Description
Technical field
The utility model relates to a kind of engineering vehicle arm rest telescopic control device, particularly a kind of flexible in proper order safety control of jib of realizing that the car hosit arm stretches according to the order of setting.
Background technology
At present, the hoisting arm expansion mechanism of car hosit mostly adopts telescopic oil cylinder to add rope row's version, telescopic boom overall length sensor is installed on basic arm, the other end of telescopic boom overall length sensor is connected with the epimerite arm by the sensor rope, telescopic boom overall length sensor is connected with the limiter of moment main frame, limiter of moment host computer control switching solenoid valve, switching solenoid valve is that electromagnetic valve is selected in the work of two-stage telescopic oil cylinder, control 3,4 during energising, epimerite arm stretch, and control 2 joint arms are flexible during outage; In the joint number of telescopic boom is 4 joints when above, generally all adopts the two-stage telescopic oil cylinder to drive, and it is flexible that the one-level telescopic oil cylinder drives the 2nd joint arm, the secondary telescopic oil cylinder by rope row drive the 3rd, 4, epimerite arm synchronization telescope, realization adds synchronous mode in proper order.Normal flexible order is: should stretch 2 joint arms when stretching out arm earlier, stretch 3,4 after 2 joint arms stretch out entirely again, the epimerite arm; Contract 3,4 when contracting arm earlier, the epimerite arm, 3,4, the epimerite arm 2 joint arms that contract again after full reduced.The selection of secondary telescopic oil cylinder will be by the switch of manual control torque killer main frame realization to switching solenoid valve, can not be automatically according to the rules order stretch, when mistake appears in flexible order, then might cause telescopic oil cylinder core canal curvature, arm generation folding arm accident has a strong impact on crane job safety.
The utility model content
The purpose of this utility model is to provide a kind of car hosit arm at the safety control that can stretch in proper order according to the jib that automatic sequence is stretched when operating that stretches.
The purpose of this utility model is achieved in that telescopic boom overall length sensor is installed on basic arm, the other end of telescopic boom overall length sensor is connected with the epimerite arm by the sensor rope, telescopic boom overall length sensor is connected with the limiter of moment main frame, the limiter of moment main frame is connected with switching solenoid valve, connect two joint arm lengths sensors on basic arm, hold-down arm stretches out detector switch and arm withdrawal detector switch on hydraulic tubing; Two joint arm lengths sensors, arm stretch out detector switch and all are connected with the limiter of moment main frame with arm withdrawal detector switch.
Beneficial effect: owing to adopted such scheme, two linear transducers are installed on basic arm, two joint brachium sensors that are used for detecting 2 joint arm collapsing lengths have specially wherein been increased, stretch out state entirely in order to judge whether 2 joint telescopic booms are in, by the limiter of moment main frame difference of telescopic boom overall length sensor and two joint brachium length values that sensor is surveyed is judged 3,4, the epimerite arm is in full reduced state or stretches out state, gather the hydraulic system pressure on-off signal simultaneously, distinguish stretching of to carry out, steering contracts, control switching solenoid valve by the limiter of moment mainframe program on this basis, control stretching of telescopic oil cylinder or contract with this, selecting at this moment, 1 grade of telescopic oil cylinder still is 2 grades of telescopic oil cylinder work, thereby realize that automatically the flexible operation of 2 joint arms is with 3,4, the conversion and control of the flexible operation of epimerite arm, jib is stretched according to correct order, the risk of fundamentally having avoided manual operation to bring has reached the purpose of this utility model.Advantage: this jib safety control is simple in structure; arm can be automatically when flexible operation according to the operation of stretching of correct manipulation flow sequence; actv. has been protected principal arm and telescopic oil cylinder; guaranteed the load-carrying capacity of principal arm; satisfied the requirement of lifting performance, the risk of fundamentally having avoided manual operation to bring.
Description of drawings
Fig. 1 is a constructional drawing of the present utility model.
Fig. 2 is a control block diagram of the present utility model.
The specific embodiment
Embodiment 1: telescopic boom overall length sensor 1 is installed on basic arm, the other end of telescopic boom overall length sensor 1 is connected with epimerite arm 2-5 by the sensor rope, telescopic boom overall length sensor 1 is connected with the limiter of moment main frame, the limiter of moment main frame is connected with switching solenoid valve Y1, connect two joint arm lengths sensors 2 on basic arm 2-1, hold-down arm stretches out detector switch S1 and arm withdrawal detector switch S2 on hydraulic tubing; Two joint arm lengths sensors 2, arm stretch out detector switch S1 and all are connected with the limiter of moment main frame with arm withdrawal detector switch S2.
Described limiter of moment main frame is an existing function unit on the hoisting crane, is prior art.
Symbol and parameter related in the control process are as follows:
L1: telescopic crane boom integral telescopic length, detected by linear transducer in the limiter of moment system among Fig. 31; L2: hoisting crane 2 joint telescopic boom collapsing lengths, detected by the little length measurement sensor 2 that is installed among Fig. 3 on the basic arm; Two linear transducer differences of L=L1-L2; LA: the full reduced length of telescopic crane boom; LB: the maximum extension elongation of hoisting crane 2 joint telescopic booms; Y1: two-stage telescopic oil cylinder work switching solenoid valve, control 3 joint arm 2-3,4 joint arm 2-4, epimerite arm 2-5 stretch during energising, and control 2 joint arm 2-2 are flexible during outage; S1: stretch out the direction of operating detector switch, detect by the pressure relay that is installed on hydraulic tubing; S2: the retraction operation direction detection switch, detect by the pressure relay that is installed on hydraulic tubing.
Logic control principle and flow process:
1) if L2＜LB, Δ L=LA illustrate that 2 joint arms do not stretch entirely, and this moment is flexible can only select 2 joint arms, therefore controls switching solenoid valve Y1 outage, selects 2 joint arms to stretch;
2) if L2=LB, Δ L=LA illustrate that 2 save arms and stretch entirely, 3,4, the epimerite arm is in full reduced state.
If S1 energising, explanation will continue to stretch out 3,4, the epimerite arm, then controls the Y1 energising, selects 3,4, the epimerite arm is flexible, before switching solenoid valve Y1 energising,, avoid stretching entirely owing to the sensor measurement error causes 2 joint arms to be unrealized by limiter of moment programming control time-delay earlier 2 seconds.
The 2 joint arms if S2 energising, explanation will continue to withdraw are then controlled switching solenoid valve Y1 outage, select 2 joint arms flexible.
3) if L2=LB, Δ L＞LA illustrate that 2 save arms and stretch entirely, 3,4, the epimerite arm is in the state of stretching out.
If S1 energising, explanation will continue to stretch out 3,4, the epimerite arm, then control switching solenoid valve Y1 energising, select 3,4, the epimerite arm stretches out.
If S2 energising, explanation will continue the arm of withdrawing, and should contract 3,4 this moment earlier, the epimerite arm, then controls switching solenoid valve Y1 energising, selects 3,4, epimerite arm retraction.In the retraction process realize 3,4, when the epimerite arm is full reduced, should be by limiter of moment programming control time-delay outage in 2 seconds, with avoid 3,4, the epimerite arm fails to realize full reduced operation.
Δ L=LA still is that Δ L＞LA must be as the factor of logic determines when L2=LB, otherwise can't judge that 2 joint arms stretch under the condition 3,4 entirely, the epimerite arm is in full reduced state and still stretches out state.
If only adopt a linear transducer to detect the control sequence operation, because the detection error of sensor exists, then can not judge 3,4, whether the epimerite arm full reduced, if 3,4, the not full reduced 2 joint arms that just switch to of epimerite arm, when then carrying out operating second time, 2 save arms may not stretch entirely, later operation can cause 2 joint arms to stretch shorter and shorter, there is not accumulated error in said method owing to whether be in full reduced state by Δ L detection 3,4, epimerite arm, and the phenomenon that 2 joint arms are stretched shorter and shorter can not take place.The long advantage of the little survey of L2 is to detect that 2 joint arms are stretched entirely, full reduced state, except that being used for sequence control, also can be limiter of moment system performance table and switches foundation is provided.
Claims (1)
1, the flexible in proper order safety control of a kind of jib, it is characterized in that: telescopic boom overall length sensor is installed on basic arm, the other end of telescopic boom overall length sensor is connected with the epimerite arm by the sensor rope, telescopic boom overall length sensor is connected with the limiter of moment main frame, the limiter of moment main frame is connected with switching solenoid valve, connect two joint arm lengths sensors on basic arm, hold-down arm stretches out detector switch and arm withdrawal detector switch on hydraulic tubing; Two joint arm lengths sensors, arm stretch out detector switch and all are connected with the limiter of moment main frame with arm withdrawal detector switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200692318U CN201165454Y (en) | 2008-01-25 | 2008-01-25 | Arm support sequential telescopic security control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200692318U CN201165454Y (en) | 2008-01-25 | 2008-01-25 | Arm support sequential telescopic security control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201165454Y true CN201165454Y (en) | 2008-12-17 |
Family
ID=40190836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200692318U Expired - Lifetime CN201165454Y (en) | 2008-01-25 | 2008-01-25 | Arm support sequential telescopic security control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201165454Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723264B (en) * | 2009-12-09 | 2012-05-09 | 三一汽车制造有限公司 | Telescopic boom detecting device and a crane with same |
| CN103754768A (en) * | 2014-01-20 | 2014-04-30 | 安徽柳工起重机有限公司 | Free expansion control system of crane truck boom |
| CN104457654A (en) * | 2014-10-29 | 2015-03-25 | 中联重科股份有限公司 | Telescopic arm stretching and retracting combined state detecting method, device and system and engineering machine |
| CN104555736A (en) * | 2014-12-26 | 2015-04-29 | 徐州重型机械有限公司 | Method and device for identifying working condition of five-knuckle arm crane with wire ropes |
| ITUA20161449A1 (en) * | 2016-03-08 | 2017-09-08 | Fassi Gru S P A | Crane comprising an extendable arm and a device for measuring the extension of this extensible arm |
| CN109132894A (en) * | 2018-10-22 | 2019-01-04 | 徐州重型机械有限公司 | Lifting equipment |
| CN109335974A (en) * | 2018-12-24 | 2019-02-15 | 陈奕松 | A kind of telescoping boom and crane |
| CN110112532A (en) * | 2019-05-06 | 2019-08-09 | 中国电子科技集团公司第三十八研究所 | A kind of convertible antenna synchronous expansion system and control method |
| CN110775726A (en) * | 2019-10-30 | 2020-02-11 | 三一汽车起重机械有限公司 | Cable drum protection device and cable drum protection method |
| CN113063381A (en) * | 2021-03-12 | 2021-07-02 | 三一汽车起重机械有限公司 | Crane arm length measuring method and device, electronic equipment and storage medium |
| US11597635B2 (en) | 2016-12-05 | 2023-03-07 | Xuzhou Heavy Machinery Co., Ltd. | Active steering system for hoisting machinery and hoisting machinery |
-
2008
- 2008-01-25 CN CNU2008200692318U patent/CN201165454Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723264B (en) * | 2009-12-09 | 2012-05-09 | 三一汽车制造有限公司 | Telescopic boom detecting device and a crane with same |
| CN103754768A (en) * | 2014-01-20 | 2014-04-30 | 安徽柳工起重机有限公司 | Free expansion control system of crane truck boom |
| CN103754768B (en) * | 2014-01-20 | 2016-03-02 | 安徽柳工起重机有限公司 | Free expansion control system of crane truck boom |
| CN104457654A (en) * | 2014-10-29 | 2015-03-25 | 中联重科股份有限公司 | Telescopic arm stretching and retracting combined state detecting method, device and system and engineering machine |
| CN104457654B (en) * | 2014-10-29 | 2017-08-29 | 中联重科股份有限公司 | The flexible assembled state detection method of telescopic arm, equipment, system and engineering machinery |
| CN104555736A (en) * | 2014-12-26 | 2015-04-29 | 徐州重型机械有限公司 | Method and device for identifying working condition of five-knuckle arm crane with wire ropes |
| ITUA20161449A1 (en) * | 2016-03-08 | 2017-09-08 | Fassi Gru S P A | Crane comprising an extendable arm and a device for measuring the extension of this extensible arm |
| EP3216741A1 (en) * | 2016-03-08 | 2017-09-13 | FASSI GRU S.p.A. | Crane comprising an extending boom and a device for measuring the extension of said extending boom |
| US11597635B2 (en) | 2016-12-05 | 2023-03-07 | Xuzhou Heavy Machinery Co., Ltd. | Active steering system for hoisting machinery and hoisting machinery |
| CN109132894A (en) * | 2018-10-22 | 2019-01-04 | 徐州重型机械有限公司 | Lifting equipment |
| US11015663B2 (en) | 2018-10-22 | 2021-05-25 | Xuzhou Heavy Machinery Co., Ltd. | Lifting device |
| CN109335974A (en) * | 2018-12-24 | 2019-02-15 | 陈奕松 | A kind of telescoping boom and crane |
| CN110112532A (en) * | 2019-05-06 | 2019-08-09 | 中国电子科技集团公司第三十八研究所 | A kind of convertible antenna synchronous expansion system and control method |
| CN110775726A (en) * | 2019-10-30 | 2020-02-11 | 三一汽车起重机械有限公司 | Cable drum protection device and cable drum protection method |
| CN113063381A (en) * | 2021-03-12 | 2021-07-02 | 三一汽车起重机械有限公司 | Crane arm length measuring method and device, electronic equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081217 |
|
| CX01 | Expiry of patent term |