CN102943801A - Cantilever crane locking mechanism - Google Patents
Cantilever crane locking mechanism Download PDFInfo
- Publication number
- CN102943801A CN102943801A CN2012104902778A CN201210490277A CN102943801A CN 102943801 A CN102943801 A CN 102943801A CN 2012104902778 A CN2012104902778 A CN 2012104902778A CN 201210490277 A CN201210490277 A CN 201210490277A CN 102943801 A CN102943801 A CN 102943801A
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- CN
- China
- Prior art keywords
- hydraulic cylinder
- cantilever crane
- oil hydraulic
- locking mechanism
- piston rod
- 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.)
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Abstract
Provided is a cantilever crane locking mechanism. A hydraulic cylinder is fixed at the waist position of an upper plane of a lower cantilever crane, a double-head bolt is fixedly installed at the end of a position rod of the hydraulic cylinder, a compression spring is arranged on the piston rod between the double-head bolt and the hydraulic cylinder, a lock catch is respectively and fixedly installed on the bottom surface of an upper cantilever crane and the upper surface of the lower cantilever crane corresponding to the upper end and the lower end of the double-head bolt, when pressure oil is not led into the hydraulic cylinder, a piston rod of a piston cylinder extends outward naturally under the effect of a spring, and two ends of the double-end bolt are driven to be inserted into button holes of the lock catch naturally. The cantilever crane locking mechanism has the advantages that locking is safe and reliable, and the hydraulic cylinder is long in service life.
Description
Technical field
The present invention relates to the lifting engineering truck, be specifically related to the locking mechanism for arm support of lifting engineering truck, belong to lifting engineering truck technical field.
Background technique
As everyone knows, the lifting structure of lifting engineering truck generally is to save actively hinged forming of above folding arm head and the tail by two joints or two, in the course of the work, the folding arm that is hinged launches under the driving of oil hydraulic cylinder, in the transition process, folding arm alternatively will be folded and pack up, be beneficial to convenient transition, the lifting engineering truck is because the road conditions of travelling are generally relatively poor; Jolt generally also comparatively violent, so damage is easily thrown and caused to folding arm away, especially in the process of turning, because the effect of centrifugal force more easily causes this result.For this reason, generally be that the method that adopts iron wire to tie up between with folding arm is fixed in the process of transition, but, obviously there is trouble in this method, the defective that efficient is lower, and the operator consists of certain security threat to binding, although prior art is also relevant for the announcement of the locking mechanism for arm support of engineering truck, for example: China Patent No. is: 201020683260.0 patent names are " locking mechanism for arm support ", but, although this kind locking mechanism for arm support has solved the defective that artificial binding brings, but, the strength that produces during the jib motion directly is loaded on the piston rod of oil hydraulic cylinder, not only easily cause fractureing of piston rod, simultaneously, also easily cause the bad seals of oil hydraulic cylinder, work unreliable.
Summary of the invention
The object of the invention is to: for existing defects in the jib locking process of existing lifting engineering truck, the invention provides a kind of locking mechanism for arm support of novel lifting engineering truck, overcome existing defects in the jib locking process of existing lifting engineering truck.
The present invention realizes that the technological scheme that above-mentioned purpose adopts is: described a kind of locking mechanism for arm support, it is by upper jib, lower jib, oil hydraulic cylinder, Compress Spring, snap close, stacking adapter forms, it is characterized in that: by forming jib and lower jib behind the arm support folding that mutually is movably hinged from beginning to end, at the waist location on the upper plane of lower jib fixing a kind of oil hydraulic cylinder is installed, install in the end of the piston rod of oil hydraulic cylinder and to fix a stacking adapter, the up and down two ends of described stacking adapter are the structure of symmetrical " 7 " font, piston rod between stacking adapter and oil hydraulic cylinder arranges a Compress Spring, stacking adapter up and down two ends corresponding on jib the bottom surface and install respectively above the lower jib and fix a snap close, when oil hydraulic cylinder does not pass into pressure oil, the piston rod of piston cylinder is naturally protruding under the effect of spring, and the two ends of drive stacking adapter are plugged in the buttonhole of snap close naturally.
Beneficial effect: can be found out by working principle of the present invention, the present invention not only has the up and down function of jib of safely and reliably locking, simultaneously, because the up and down pulling force that produces and the impact force of jib and can't help to be loaded into above the piston rod, but born by snap close and stacking adapter, so the present invention has advantages of that locking is safe and reliable, oil hydraulic cylinder is long working life.
Description of drawings
Accompanying drawing 1 is plan view of the present invention;
Accompanying drawing 2 is A-A sectional views of accompanying drawing 1 with accompanying drawing 3;
Shown in the figure: 1, upper jib; 2, lower jib; 3, oil hydraulic cylinder; 4, Compress Spring; 5, snap close; 6, stacking adapter.
Embodiment
A kind of locking mechanism for arm support, comprise jib (1), lower jib (2), oil hydraulic cylinder (3), Compress Spring (4), snap close (5), stacking adapter (6), it is characterized in that: form behind the arm support folding that upper jib (1) and lower jib (2) are movably hinged mutually by head and the tail, at the waist location on the upper plane of lower jib (2) fixing a kind of oil hydraulic cylinder (3) is installed, install in the end of the piston rod of oil hydraulic cylinder (3) and to fix a stacking adapter (6), the up and down two ends of described stacking adapter (6) are the structure of symmetrical " 7 " font, piston rod between stacking adapter (6) and oil hydraulic cylinder (3) arranges a Compress Spring (4), stacking adapter (6) up and down the corresponding upper jibs in two ends (1) the bottom surface and install respectively above the lower jib (2) and fix a snap close (5), when the piston cavity of oil hydraulic cylinder (3) does not pass into pressure oil, the piston rod of piston cylinder (3) is naturally protruding under the effect of spring (4), and the two ends of drive stacking adapter (6) are plugged in the buttonhole of snap close (5) naturally.
Claims (1)
1. locking mechanism for arm support, it is characterized in that: at the waist location on the upper plane of lower jib (2) fixing a kind of oil hydraulic cylinder (3) is installed, install in the end of the piston rod of oil hydraulic cylinder (3) and to fix a stacking adapter (6), the up and down two ends of stacking adapter (6) are the structure of symmetrical " 7 " font, piston rod between stacking adapter (6) and oil hydraulic cylinder (3) arranges a Compress Spring (4), stacking adapter (6) up and down the corresponding upper jibs in two ends (1) the bottom surface and install respectively above the lower jib (2) and fix a snap close (5), when the piston cavity of oil hydraulic cylinder (3) does not pass into pressure oil, the piston rod of piston cylinder (3) is naturally protruding under the effect of spring (4), and the two ends of drive stacking adapter (6) are plugged in the buttonhole of snap close (5) naturally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104902778A CN102943801A (en) | 2012-11-28 | 2012-11-28 | Cantilever crane locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104902778A CN102943801A (en) | 2012-11-28 | 2012-11-28 | Cantilever crane locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102943801A true CN102943801A (en) | 2013-02-27 |
Family
ID=47726772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104902778A Pending CN102943801A (en) | 2012-11-28 | 2012-11-28 | Cantilever crane locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102943801A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909629A (en) * | 2016-06-24 | 2016-08-31 | 张家港市兰航机械有限公司 | Installation structure for air cylinder lock pin |
| CN110273905A (en) * | 2018-10-22 | 2019-09-24 | 瑞诗昊昱实业(上海)有限公司 | A kind of attachment device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131809A (en) * | 1980-03-18 | 1981-10-15 | Mitsubishi Electric Corp | Oil hydraulic cylinder for locking |
| CN2688839Y (en) * | 2004-04-29 | 2005-03-30 | 赵世丹 | Latch of sliding door and window |
| CN201634385U (en) * | 2010-01-22 | 2010-11-17 | 徐州海伦哲专用车辆股份有限公司 | Upper arm clamping device of aerial work platform |
| CN201902394U (en) * | 2010-12-28 | 2011-07-20 | 徐州海伦哲专用车辆股份有限公司 | Locking mechanism for arm support |
| CN102691466A (en) * | 2012-05-18 | 2012-09-26 | 刘韶怡 | Security door with internally-mounted padlock |
| CN202545492U (en) * | 2012-05-03 | 2012-11-21 | 冯世英 | Locking rope rod positioning pin |
| CN202971485U (en) * | 2012-11-28 | 2013-06-05 | 苏州蓝王机床工具科技有限公司 | Cantilever crane locking mechanism |
-
2012
- 2012-11-28 CN CN2012104902778A patent/CN102943801A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131809A (en) * | 1980-03-18 | 1981-10-15 | Mitsubishi Electric Corp | Oil hydraulic cylinder for locking |
| CN2688839Y (en) * | 2004-04-29 | 2005-03-30 | 赵世丹 | Latch of sliding door and window |
| CN201634385U (en) * | 2010-01-22 | 2010-11-17 | 徐州海伦哲专用车辆股份有限公司 | Upper arm clamping device of aerial work platform |
| CN201902394U (en) * | 2010-12-28 | 2011-07-20 | 徐州海伦哲专用车辆股份有限公司 | Locking mechanism for arm support |
| CN202545492U (en) * | 2012-05-03 | 2012-11-21 | 冯世英 | Locking rope rod positioning pin |
| CN102691466A (en) * | 2012-05-18 | 2012-09-26 | 刘韶怡 | Security door with internally-mounted padlock |
| CN202971485U (en) * | 2012-11-28 | 2013-06-05 | 苏州蓝王机床工具科技有限公司 | Cantilever crane locking mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909629A (en) * | 2016-06-24 | 2016-08-31 | 张家港市兰航机械有限公司 | Installation structure for air cylinder lock pin |
| CN110273905A (en) * | 2018-10-22 | 2019-09-24 | 瑞诗昊昱实业(上海)有限公司 | A kind of attachment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130227 |