CN201980913U - Electronic anti-hyperextension device of crane cylinder with single cylinder bolt-type telescopic arm - Google Patents
Electronic anti-hyperextension device of crane cylinder with single cylinder bolt-type telescopic arm Download PDFInfo
- Publication number
- CN201980913U CN201980913U CN2011200246588U CN201120024658U CN201980913U CN 201980913 U CN201980913 U CN 201980913U CN 2011200246588 U CN2011200246588 U CN 2011200246588U CN 201120024658 U CN201120024658 U CN 201120024658U CN 201980913 U CN201980913 U CN 201980913U
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- oil cylinder
- cylinder
- controller
- arm
- arm position
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Abstract
The utility model discloses an electronic anti-hyperextension device of a crane cylinder with a single cylinder bolt-type telescopic arm, belonging to the technical field of engineering mechanical telescopic arms. The utility model comprises a controller, a cylinder arm position detection switch, a cylinder arm position detection block, a display and an electrical proportional valve, wherein the cylinder arm position detection switch is fixed at the tail part of the cylinder, the cylinder arm position detection switch is electrically connected with the input end of the controller, the cylinder arm position detection block is fixed at the tail part of the tail section arm of the telescopic arm of a crane, the communication interface of the controller is connected with the display, and the output port of the controller is electrically connected with the electrical proportional valve. The utility model has the beneficial effects that the electric control means is used to prevent the cylinder from continuously extending forwards to crush an arm head structure, the waste to the hydraulic energy and the wear to a mechanical structure can be avoided, and an operator is reminded of the cylinder position by an acousto-optic alarm.
Description
Technical field
The utility model relates to the anti-hyperextension device of a kind of hoist cylinder, specifically is the anti-hyperextension device of a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics, belongs to the engineering machinery telescopic arm technical field.
Background technology
For guaranteeing safety and the reliability of each arm joint at telescopic process, development along with full ground hoisting crane and big brachium technology, the application of single-cylinder bolt telescoping mechanism on telescopic arm support more and more widely, this mechanism adopts built-in interlock system, after the spring driving cylinder pin pin of adorning on the telescopic oil cylinder was decided telescopic boom, just machinery discharged being connected of this joint arm and other joint arms; In other words, have only certain joint telescopic boom and telescopic oil cylinder could discharge this joint arm after the locking mutually and save the connection of arm, with safety, the reliability of guaranteeing hoisting arm expansion with other.In telescopic process, operate certain joint during arm when needs, telescoping cylinder is extended this joint arm, regain arm pin, release cylinder pin and get final product and should save arm and stretch out or regain.Yet, because the telescoping cylinder stroke is longer, reach 10 usually surplus rice, and contractility is bigger; If maloperation or control system occur when malfunctioning, will produce that crane arm maintains static and misoperation that telescoping cylinder unrestrictedly protracts, and then oil cylinder external part and the end collision of arm joint, cause the accident of device damage and construction delay.
The oil cylinder of single cylinder bolt-type telescoping mechanism may exist oil cylinder to exceed the desired location when seeking the arm position and the situation of pushing up bad arm head, early stage this situation can only be avoided by operator's judgement, and utility model " telescopic hoist boom and have the hoisting crane of this arm " (notification number: 201406290) be a kind of device that stops this dangerous play by mechanical means.
Can exist control mechanism still carrying out expanding-contracting action when in fact stoping by mechanical means, oil cylinder still is subjected to propulsive effort forward.Can cause the waste of hydraulic pressure energy and the wearing and tearing of physical construction like this, owing to do not have controller, telltale to participate in, the operator can not obtain alarm simultaneously.
Summary of the invention
Problem at above-mentioned prior art existence, the utility model provides a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics to prevent the hyperextension device, stop oil cylinder to continue when protracting, to break the arm head structure by electrical control means, and remind operator's oil cylinder position by sound and light alarm.
To achieve these goals, the technical solution adopted in the utility model is: a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics is prevented the hyperextension device, comprise controller, oil cylinder arm position detector switch, the detection of oil cylinder arm position piece, telltale and electric proportional valve, oil cylinder arm position detector switch is fixed on the oil cylinder afterbody, the input end of arm position detector switch and controller electrically connects, oil cylinder arm position is detected piece and is fixed on telescopic crane boom minor details arm afterbody, the communication interface of controller links to each other with telltale, and output port and electric proportional valve electrically connect.
Further, controller is a Programmable Logic Controller.
Further, telltale uses CANOPEN agreement and controller exchange message.
Further, display interior is integrated with Programmable Logic Controller, buzzer phone and LED lamp.
Further, oil cylinder arm position is detected the block length computing formula and is: L=C-(A+D),
Wherein, A is the distance that piece mounting center and oil cylinder top are detected in oil cylinder arm position, and C is that the distance of piece mounting center position to arm head detected in oil cylinder arm position, and D is after cylinder system detects the oil cylinder hyperextension, the oil cylinder head is to the distance of minor details arm head portion, and L is that block length is detected in oil cylinder arm position.
Further, the distance D computing formula is: D=vt,
Wherein, v is the flexible maximum speed of oil cylinder, and t is that controller sends and cuts off the instructing to the oil cylinder institute's elapsed time that stops to protract of electric proportional valve action.
The beneficial effects of the utility model are: stop oil cylinder to continue to break the arm head structure when protracting by electrical control means, avoided the waste of hydraulic pressure energy and the wearing and tearing of physical construction, and remind operator's oil cylinder position by sound and light alarm.
Description of drawings
Fig. 1 is a functional block diagram of the present utility model
Fig. 2 is that scheme drawing is detected in minor details arm of the present utility model position
Among the figure: 1, telescopic crane boom minor details arm, 2, oil cylinder arm position detector switch, 3, oil cylinder arm position detects piece, 4, oil cylinder, 5, controller, 6, telltale, 7, apportioning valve, the distance at piece mounting center and oil cylinder top is detected in A, oil cylinder arm position, the distance of piece mounting center position to arm head detected in C, oil cylinder arm position, after D, cylinder system detected the oil cylinder hyperextension, the oil cylinder head was to the distance of minor details arm head portion, and block length is detected in L, oil cylinder arm position.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics is prevented the hyperextension device, comprises controller 5, oil cylinder arm position detector switch 2, the detection of oil cylinder arm position piece 3, telltale 6 and electric proportional valve 7.
Oil cylinder arm position detector switch 2 is fixed on oil cylinder 4 afterbodys, and electrically connect with the input end of controller 5, it and oil cylinder arm position are detected piece 3 and are used, and have a high level output when its upright position arrival detects piece 3, are leaving this high level disappearance of detection piece 3 backs.
Oil cylinder arm position is detected piece 3 and is fixed on telescopic crane boom minor details arm 1 afterbody, is used with oil cylinder arm position detector switch 2.Piece 3 length computation formula are detected in oil cylinder arm position: L=C-(A+D)
Wherein, A is the distance that piece mounting center and oil cylinder top are detected in oil cylinder arm position, and C is that the distance of piece mounting center position to arm head detected in oil cylinder arm position, and D is after cylinder system detects the oil cylinder hyperextension, the oil cylinder head is to the distance of minor details arm head portion, and L is that block length is detected in oil cylinder arm position.
Telltale 6 is installed in operator's compartment inside, with controller 5 communication interface link to each other, chaufeur can conveniently be observed.Telltale 6 uses CANOEN agreement and controller exchange message.Telltale 6 inside are integrated with Programmable Logic Controller, buzzer phone and LED lamp.Can be achieved as follows logic: buzzer phone and LED lantern festival are made visual cue and audible alarm behind the oil cylinder hyperextension signal that receives controller 5 transmission.
Electric proportional valve 7 electrically connects with the mouth of controller 5, and electric proportional valve 7 is controlled the speed of semi-girder by the spool aperture.The spool aperture of electric proportional valve 7 is by driving the size of current decision of this valve.Controller 5 can be exported particular current to electric proportional valve by program.
Distance D is after cylinder system detects the oil cylinder hyperextension, and the oil cylinder head is to the distance of minor details arm head portion, and distance D must be enough greatly to guarantee after the electromagnetic valve controlled device is cut off output, because the overhang of inertia is all the time less than it.Therefore the distance D computing formula is: D=vt
Wherein, v is the flexible maximum speed of oil cylinder 4, and t is that controller 5 sends and cuts off the instructing to the oil cylinder 4 institute's elapsed time that stops to protract of electric proportional valve 7 actions.
Oil cylinder arm position detector switch 2 can be exported high level signal when detecting oil cylinder arm position detection piece 3, this signal passes to controller 5 through cable, and controller 5 goes out oil cylinder 4 by logic determines and is in which position, arm position.In the semi-girder process, controller 5 close supervision minor details arm position signals change when detecting minor details arm position signal, when this signal suddenly disappears (Fig. 2 dotted line position), illustrate that oil cylinder 4 has stretched out normal scope.This moment, controller 5 sent the instruction of cutting off electric proportional valve 7 actions, the electric current that is added in after instruction is carried out on the electric proportional valve 7 can reduce to zero according to the instruction of controller 5, to guarantee oil cylinder 4 after instruction is carried out since inertia to the distance of protracting less than D, by the CAN bus hyperextension signal is passed to telltale 6 simultaneously, do the prompting alert operator that is out of order by telltale 6.Thereby avoided oil cylinder 4 to continue when protracting, to break the arm head structure by electrical control means.
Claims (6)
1. a single-cylinder plug type telescopic jib crane oil cylinder electronics is prevented the hyperextension device, it is characterized in that comprising controller (5), oil cylinder arm position detector switch (2), the detection of oil cylinder arm position piece (3), telltale (6) and electric proportional valve (7), oil cylinder arm position detector switch (2) is fixed on oil cylinder (4) afterbody, arm position detector switch (2) electrically connects with the input end of controller (5), oil cylinder arm position is detected piece (3) and is fixed on telescopic crane boom minor details arm (1) afterbody, the communication interface of controller (5) links to each other with telltale (6), and output port and electric proportional valve (7) electrically connect.
2. a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics according to claim 1 is prevented the hyperextension device, it is characterized in that described controller (5) is a Programmable Logic Controller.
3. a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics according to claim 1 is prevented the hyperextension device, it is characterized in that described telltale (6) uses CANOPEN agreement and controller (5) exchange message.
4. according to claim 1 or the anti-hyperextension device of 3 described a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics, it is characterized in that described telltale (6) inside is integrated with Programmable Logic Controller, buzzer phone and LED lamp.
5. a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics according to claim 1 is prevented the hyperextension device, it is characterized in that described oil cylinder arm position detection piece (3) length computation formula is: L=C-(A+D),
Wherein, A is the distance that piece mounting center and oil cylinder top are detected in oil cylinder arm position, and C is that the distance of piece mounting center position to arm head detected in oil cylinder arm position, and D is after cylinder system detects the oil cylinder hyperextension, the oil cylinder head is to the distance of minor details arm head portion, and L is that block length is detected in oil cylinder arm position.
6. a kind of single-cylinder plug type telescopic jib crane oil cylinder electronics according to claim 5 is prevented the hyperextension device, it is characterized in that described distance D computing formula is: D=vt,
Wherein, v is the flexible maximum speed of oil cylinder (4), and t is that controller (5) sends and cuts off the instructing to oil cylinder (4) the institute's elapsed time that stops to protract of electric proportional valve (7) action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200246588U CN201980913U (en) | 2011-01-26 | 2011-01-26 | Electronic anti-hyperextension device of crane cylinder with single cylinder bolt-type telescopic arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200246588U CN201980913U (en) | 2011-01-26 | 2011-01-26 | Electronic anti-hyperextension device of crane cylinder with single cylinder bolt-type telescopic arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201980913U true CN201980913U (en) | 2011-09-21 |
Family
ID=44608377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200246588U Expired - Lifetime CN201980913U (en) | 2011-01-26 | 2011-01-26 | Electronic anti-hyperextension device of crane cylinder with single cylinder bolt-type telescopic arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201980913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180416A (en) * | 2011-01-26 | 2011-09-14 | 徐州赫思曼电子有限公司 | Electronic hyperextension-proof device of single cylinder bolt type telescopic boom crane oil cylinder |
-
2011
- 2011-01-26 CN CN2011200246588U patent/CN201980913U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180416A (en) * | 2011-01-26 | 2011-09-14 | 徐州赫思曼电子有限公司 | Electronic hyperextension-proof device of single cylinder bolt type telescopic boom crane oil cylinder |
| CN102180416B (en) * | 2011-01-26 | 2013-04-24 | 徐州赫思曼电子有限公司 | Electronic hyperextension-proof device of single cylinder bolt type telescopic boom crane oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110921 Effective date of abandoning: 20130424 |
|
| RGAV | Abandon patent right to avoid regrant |