CN102795564B - Device for preventing boom from backward tilting and crane - Google Patents
Device for preventing boom from backward tilting and crane Download PDFInfo
- Publication number
- CN102795564B CN102795564B CN201210328151.0A CN201210328151A CN102795564B CN 102795564 B CN102795564 B CN 102795564B CN 201210328151 A CN201210328151 A CN 201210328151A CN 102795564 B CN102795564 B CN 102795564B
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- jib
- angle
- pull bar
- bar
- hypsokinesis
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Abstract
The invention discloses a device for preventing a boom from backward tilting and a crane, belonging to the field of crawler crane control systems. The system comprises an angle sensing device and an angle display device, wherein the angle sensing device is connected with a boom; the angle display device is connected with the angle sensing device to display the angle of the boom, which is sensed by the angle sensing device; the system also comprises a backward tilting preventing rod with two ends respectively connected with the boom of the crawler crane and a loading platform of the crawler crane; a pull rod is also hinged between the backward tilting preventing rod and the boom and is provided with a retractable structure and a section easy to snap; and the section easy to snap is snapped when the two ends continuously endure tension after the pull rod reaches the maximum length. According to the technical scheme, the following beneficial effects are achieved: multiple prompt effects are achieved through an electrical control system and a mechanical structure, the boom can be effectively prevented from backward tilting, and accidents are avoided; and the device has a simple structure, is low cost, is safe and reliable, is easy to manufacture and install and can be applied without extra space for placement.
Description
Technical field
The present invention relates to a kind of crawler crane control system, relate in particular to a kind of device and hoisting crane that prevents jib tipping backwards.
Background technology
Crawler crane is in the time of installation or lifting work, often need to be by cocked jib to certain angle, if but operator improper or maloperation and jib is pulled when having exceeded maximum elevation to the power of a test of jib angle in operating process, jib meeting tipping backwards, cause device damage, even tumble, and the major accident of personal casualty.
Summary of the invention
The problems referred to above that exist for existing crawler crane, now provide a kind of device that prevents jib tipping backwards and hoisting crane that operator is provided while being intended to that crawler crane boom is cocked exceedes maximum angle prompting.
Concrete technical scheme is as follows:
Prevent a device for jib tipping backwards, wherein, comprise
With angle sensing equipment and the angle display device of described jib interlock, described angle display device is connected to show the angle of the described jib that described angle sensing equipment senses with described angle sensing equipment;
The anti-hypsokinesis bar that two ends are connected with the getting-on platform of crawler crane boom and crawler crane respectively, between described anti-hypsokinesis bar and described jib, be also hinged with a pull bar, described pull bar is provided with stretching structure, described stretching structure makes the length of described pull bar in the time of range be described jib in allow maximum layback angle time described in the extremely distance between described pull bar and described anti-hypsokinesis bar connecting portion of pull bar and described jib connecting portion, described pull bar comprises that one easily breaks section, the described section of easily breaking is pulled off when after described pull bar reaches extreme length, under tension is continued at two ends.
Preferably, described angle display device is to be placed in the telltale in crawler crane cab or to be arranged at the angle index on jib.
Preferably, described anti-hypsokinesis bar be provided with mainly formed by spring or hydraulic ram or cylinder longitudinally form the buffer structure of cushion effect along described anti-hypsokinesis bar.
Preferably, described anti-hypsokinesis bar one end and described jib are hinged, and the other end and is connected in the anti-hypsokinesis seat sliding block joint on the getting-on platform of crawler crane.
Preferably, described pull bar is mainly formed by top rod and lower link socket, and the part of described top rod and lower link socket forms described stretching structure, and the described section of easily breaking is formed on described top rod or lower link.
Preferably, described angle sensing equipment is arranged at described jib diversion section to respond to the layback angle of described jib.
Preferably, described angle sensing equipment is mainly formed by approach switch or angular transducer or position transduser.
Preferably, the buffer structure place that described angle sensing equipment is arranged at described anti-hypsokinesis bar is by the layback angle of the stroke induction jib of described buffer structure, or the stretching structure place that is arranged at described pull bar responds to the layback angle of described jib by the flexible stroke of described pull bar.
Preferably, also comprise a controller and an alarm device, preset the maximum layback angle value that described jib allows in described controller, described controller is connected respectively with described angle sensing equipment and described alarm device.
A kind of hoisting crane, is characterized in that, comprises the above-mentioned device that prevents jib tipping backwards.
The beneficial effect of technique scheme is:
Realize multi cue by sensitive electric control system and failure-free physical construction, can effectively prevent jib tipping backwards, avoid the generation of accident.
The simple connecting rod mechanism of physical construction utilization, simple in structure and safe and reliable, with low cost, be easy to manufacture and install, need not place by additional space, can realize application.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of a kind of device that prevents jib tipping backwards of the present invention;
Fig. 2 is the structural representation of the pull bar of the embodiment of a kind of device that prevents jib tipping backwards of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
As depicted in figs. 1 and 2, the embodiment of a kind of device that prevents jib tipping backwards of the present invention, wherein, comprise the angle sensing equipment 2 and the angle display device 21 that link with jib 1, described angle display device 21 is connected the angle of the jib 1 sensing with angles of display sensing device 2 with angle sensing equipment 2; Also comprise the anti-hypsokinesis bar 4 that two ends are connected with the jib 1 of crawler crane and the getting-on platform 3 of crawler crane respectively, between anti-hypsokinesis bar 4 and jib 1, be also hinged with a pull bar 5, pull bar 5 is provided with stretching structure 51, stretching structure 51 makes the length of pull bar 5 in the time of range be jib 1 in allow maximum layback angle time pull bar 5 and jib 1 connecting portion to the distance between pull bar 5 and anti-hypsokinesis bar 4 connecting portions, pull bar 5 comprises that one easily breaks section 52, easily breaks section 52 and is pulled off when under tension is continued at two ends after pull bar 5 reaches extreme length.
The principle of work of technique scheme is, the layback angle of the jib 1 that angle display device 21 senses angle sensing equipment shows, realize the prompting to operating personal, angle display device 21 can be the telltale being arranged in crawler crane cab, can be also the angle index being arranged on jib 1.Simultaneously, realize the hypsokinesis buffering of jib 1 by anti-hypsokinesis bar 4, in the time that the layback angle of jib 1 increases, between anti-hypsokinesis bar 4 and jib 1, the length of hinged pull bar 5 is elongated by the stretching, extension of stretching structure 51, until the length of pull bar 5 be maximum when the maximum layback angle of jib 1 in allowing, if now jib 1 continues layback, the two ends continuation under tension of pull bar 5 makes easily to break section 52 and is pulled off, thereby reminds operating personal can not after continuation, pull jib 1.Can also in pull bar 5 easily break the inductive means that section 52 arranges warning device or is connected with warning device, by the inductive means of easily breaking section 52 and being pulled off trigger alarm device or being connected with warning device, operating personal is sent to alarm signal.
On technique scheme basis, further, on anti-hypsokinesis bar 4, can arrange is mainly formed by spring or hydraulic ram or cylinder longitudinally form the buffer structure 41 of cushion effect along anti-hypsokinesis bar, thereby the buffering of realization to jib 1 hypsokinesis.Even, anti-hypsokinesis bar 4 one end and jib 1 are hinged, the other end can with anti-hypsokinesis seat 31 sliding block joints that are connected on the getting-on platform 3 of crawler crane, thereby the impact while reducing jib 1 hypsokinesis, getting-on platform 3 being produced.
On technique scheme basis, further, pull bar 5 can be mainly socketed and be formed by 53 top rods and lower link 54, and the part that top rod 53 and lower link 54 are socketed forms stretching structure 51, easily breaks section 52 and can be formed on top rod 53 or lower link 54.
On technique scheme basis, further, angle sensing equipment 2 can be arranged at the layback angle of jib 1 diversion section with induction jib 1, also can be arranged at buffer structure 41 places of anti-hypsokinesis bar 4 by the layback angle of the cushion stroke induction jib 1 of buffer structure 41, or stretching structure 51 places that can be arranged at pull bar 5 are by the layback angle of the flexible stroke induction jib 1 of pull bar 5.Preferably angle sensing equipment 2 can be mainly formed by approach switch or angular transducer or position transduser.
On technique scheme basis, further, also comprise a controller and an alarm device, in controller, preset the maximum layback angle value that jib 1 allows, controller 1 is connected respectively with angle sensing equipment 2 and alarm device.Controller is responded to the layback angle of jib 1 by the angle sensing equipment 2 linking with jib 1, in the time that the layback angle of jib 1 exceedes the maximum layback angle of permission preset in controller 1, controller is realized the warning to operating personal by controlling warning device warning.
In embodiments of the invention, also comprise a kind of hoisting crane, wherein, comprise the above-mentioned device that prevents jib tipping backwards.
The foregoing is only preferred embodiment of the present invention; not thereby limit embodiments of the present invention and protection domain; to those skilled in the art; the scheme that being equal to of should recognizing that all utilizations specification sheets of the present invention and diagramatic content done replaces and apparent variation obtains, all should be included in protection scope of the present invention.
Claims (9)
1. a device that prevents jib tipping backwards, is characterized in that, comprises
With angle sensing equipment and the angle display device of described jib interlock, described angle display device is connected to show the angle of the described jib that described angle sensing equipment senses with described angle sensing equipment;
The anti-hypsokinesis bar that two ends are connected with the getting-on platform of crawler crane boom and crawler crane respectively, between described anti-hypsokinesis bar and described jib, be also hinged with a pull bar, described pull bar is provided with stretching structure, described stretching structure makes the length of described pull bar in the time of range be described jib in allow maximum layback angle time described in the extremely distance between described pull bar and described anti-hypsokinesis bar connecting portion of pull bar and described jib connecting portion, described pull bar comprises that one easily breaks section, the described section of easily breaking is pulled off when after described pull bar reaches extreme length, under tension is continued at two ends, described pull bar is mainly formed by top rod and lower link socket, and the part of described top rod and lower link socket forms described stretching structure, and the described section of easily breaking is formed on described top rod or lower link.
2. the device that prevents as claimed in claim 1 jib tipping backwards, is characterized in that, described angle display device is to be placed in the telltale in crawler crane cab or to be arranged at the angle index on jib.
3. the device that prevents as claimed in claim 1 jib tipping backwards, is characterized in that, described anti-hypsokinesis bar be provided with mainly formed by spring or hydraulic ram or cylinder longitudinally form the buffer structure of cushion effect along described anti-hypsokinesis bar.
4. the device that prevents as claimed in claim 1 jib tipping backwards, is characterized in that, described anti-hypsokinesis bar one end and described jib are hinged, and the other end and is connected in the anti-hypsokinesis seat sliding block joint on the getting-on platform of crawler crane.
5. the device that prevents as claimed in claim 1 jib tipping backwards, is characterized in that, described angle sensing equipment is arranged at described jib diversion section to respond to the layback angle of described jib.
6. the device that prevents as claimed in claim 1 jib tipping backwards, is characterized in that, described angle sensing equipment is mainly formed by approach switch or angular transducer or position transduser.
7. prevent as claimed in claim 3 the device of jib tipping backwards, it is characterized in that, the buffer structure place that described angle sensing equipment is arranged at described anti-hypsokinesis bar is by the layback angle of the stroke induction jib of described buffer structure, or the stretching structure place that is arranged at described pull bar responds to the layback angle of described jib by the flexible stroke of described pull bar.
8. as prevented the device of jib tipping backwards as described in arbitrary in claim 1-7, it is characterized in that, also comprise a controller and an alarm device, in described controller, preset the maximum layback angle value that described jib allows, described controller is connected respectively with described angle sensing equipment and described alarm device.
9. a hoisting crane, is characterized in that, comprises the device as prevented jib tipping backwards as described in arbitrary in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328151.0A CN102795564B (en) | 2012-09-07 | 2012-09-07 | Device for preventing boom from backward tilting and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328151.0A CN102795564B (en) | 2012-09-07 | 2012-09-07 | Device for preventing boom from backward tilting and crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102795564A CN102795564A (en) | 2012-11-28 |
| CN102795564B true CN102795564B (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210328151.0A Expired - Fee Related CN102795564B (en) | 2012-09-07 | 2012-09-07 | Device for preventing boom from backward tilting and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102795564B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381359A (en) * | 2017-08-24 | 2017-11-24 | 安徽骏达起重机械有限公司 | The attitude monitoring system and method for the gib arm of crane |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003040580A (en) * | 2001-07-25 | 2003-02-13 | Hitachi Constr Mach Co Ltd | Breakage prevention device of boom working machine |
| CN101826246A (en) * | 2009-03-03 | 2010-09-08 | 武汉鼎超科技开发有限公司 | Wall crack warning device |
| CN201882832U (en) * | 2010-11-17 | 2011-06-29 | 上海三一科技有限公司 | Rearward tilting prevention device for main arm of crane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081285A (en) * | 2000-09-11 | 2002-03-22 | Nippon Sharyo Seizo Kaisha Ltd | Biaxial coaxial device |
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2012
- 2012-09-07 CN CN201210328151.0A patent/CN102795564B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003040580A (en) * | 2001-07-25 | 2003-02-13 | Hitachi Constr Mach Co Ltd | Breakage prevention device of boom working machine |
| CN101826246A (en) * | 2009-03-03 | 2010-09-08 | 武汉鼎超科技开发有限公司 | Wall crack warning device |
| CN201882832U (en) * | 2010-11-17 | 2011-06-29 | 上海三一科技有限公司 | Rearward tilting prevention device for main arm of crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102795564A (en) | 2012-11-28 |
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Granted publication date: 20140917 Termination date: 20160907 |