CN201694761U - Main arm telescopic mechanism and automobile crane with same - Google Patents
Main arm telescopic mechanism and automobile crane with same Download PDFInfo
- Publication number
- CN201694761U CN201694761U CN2009202935268U CN200920293526U CN201694761U CN 201694761 U CN201694761 U CN 201694761U CN 2009202935268 U CN2009202935268 U CN 2009202935268U CN 200920293526 U CN200920293526 U CN 200920293526U CN 201694761 U CN201694761 U CN 201694761U
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- China
- Prior art keywords
- arm
- cylinder
- joint arm
- oil cylinder
- joint
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The utility model provides a main arm telescopic mechanism and an automobile crane with the same. The main arm telescopic mechanism comprises a base arm, four knuckle arms, a telescopic oil cylinder (12) and a mechanical lock (5), wherein a cylinder barrel of the telescopic oil cylinder (12) is fixed at the tail of the third knuckle arm (9); a cylinder rod of the telescopic oil cylinder is provided with a cylinder pin (14); a first cylinder pin hole (15) is arranged at the tail of the base arm (4); and a second cylinder pin hole (16) is arranged at the tail of the second knuckle arm (3). The main arm telescopic mechanism comprises a first steel rope (8), a second steel rope (10) and a third steel rope (2). The main arm telescopic mechanism optimizes the layout of the oil cylinder and the steel ropes and reduces the weight of the mechanism and the cost.
Description
Technical field
The utility model relates to a kind of principal arm telescoping mechanism and has the car hosit of this principal arm telescoping mechanism.
Background technology
The principal arm of car hosit is the core component of hoisting crane, is that car hosit hangs year most important load-bearing structural member of operation; The weight of principal arm, intensity, rigidity will directly influence the in-use performance of car hosit.In addition, the technology content of principal arm structure is the important symbol of car hosit product level, and design, manufacturing, the assembly quality that improves principal arm mechanism is the target that each hoisting crane producer is constantly pursued.Telescoping mechanism is the critical component of principal arm, and it is restricting the flexible and lift heavy load-carrying capacity of principal arm.
In the prior art, the principal arm telescoping mechanism mainly contains oil cylinder rope row and two kinds of patterns of single-cylinder bolt.At present, the medium and small tonnage car hosit in home and abroad mainly adopts oil cylinder rope row formula telescoping mechanism, and its stretch mode mainly contains order and adds the method for synchronization, the method for synchronization.Add synchronization telescope mechanism in proper order for five joints, now mainly be made up of two inversion telescopic oil cylinders and two groups of telescopic boom ropes, this conventional art is ripe.Yet for 50T on the market and above tonnage product, every of the quality of two telescopic oil cylinders all surpasses one ton, and it is numerous big and heavy that a whole set of crane arm seems.Therefore, if can develop a kind of stressed between a telescopic oil cylinder, each arm of reasonably optimizing, as to reduce the steel cable consumption novel five joint boom crane telescoping mechanisms that use, hang a year performance, reduce production costs with weight, the raising car load of realizing alleviating a whole set of arm, this will have very important significance.
The utility model content
The utility model is devoted to overcome the above-mentioned defective of prior art just and is made.The car hosit that the purpose of this utility model is a kind of principal arm telescoping mechanism is provided and has this principal arm telescoping mechanism, require this principal arm telescoping mechanism to use a telescopic oil cylinder, optimize distribution, reduce the steel cable consumption, thereby the weight, the raising car load that alleviate entire mechanism hang a year performance, reduce production costs.
For achieving the above object, the utility model provides a kind of principal arm telescoping mechanism, comprise: basic arm, the second joint arm, the 3rd joint arm, the 4th joint arm, the 5th joint arm and telescopic oil cylinder, especially, the principal arm telescoping mechanism also comprises the mechanical lock that is arranged between the second joint arm and the 3rd joint arm, wherein, the cylinder barrel of telescopic oil cylinder is fixed on the afterbody of the 3rd joint arm, the cylinder bar of telescopic oil cylinder is provided with the cylinder pin, and the afterbody of basic arm is provided with the first cylinder pin-and-hole, and the afterbody of the second joint arm is provided with the second cylinder pin-and-hole.
Described principal arm telescoping mechanism comprises: first steel cable, an end be fixed to second the joint arm afterbody, walk around the cylinder barrel head that is arranged on telescopic oil cylinder first pulley and the other end be fixed to the 4th the joint arm afterbody; Second steel cable, an end are fixed to the afterbody of the 3rd joint arm, walk around the 3rd pulley that is arranged on the second joint arm head portion and be arranged on second pulley of the 3rd joint arm afterbody and the other end is fixed on the 5th joint arm successively; And the 3rd steel cable, an end is fixed on the head of the 4th joint arm, walks around the 4th pulley that is arranged on the 5th joint arm afterbody and be arranged on the 5th pulley of the 4th joint arm head portion and the other end is fixed on the afterbody of the second joint arm successively.By such design plan, can optimize steel cable and arrange, make the steel cable consumption significantly reduce, thereby reduce gap between arm, reduce the loss of arm cross section, improve crane arm and hung a year performance.
Preferably, according to principal arm telescoping mechanism of the present utility model, wherein, the cylinder pin is arranged on the cylinder boom end of telescopic oil cylinder.By such design plan, can make to the layout of the hydraulic oil pipe of telescopic oil cylinder and cylinder pin oil cylinder fuel feeding conveniently, also be convenient to maintenance of equipment.
Preferably, according to principal arm telescoping mechanism of the present utility model, wherein, comprise the arm pin and the arm pin oil cylinder of the locking basic arm and the second joint arm.
Preferably, according to principal arm telescoping mechanism of the present utility model, wherein, arm pin and arm pin oil cylinder are arranged in the head of basic arm.By such design plan, be convenient to maintenance of equipment.
Preferably, according to principal arm telescoping mechanism of the present utility model, wherein, mechanical lock is an automatic mechanical lock.By such design plan, realize that second arm and the 3rd joint arm automatically lock and need not arrange oil cylinder and fuel feed pipe, thereby increase work efficiency.
In addition, the utility model also provides a kind of car hosit, and especially, this hoisting crane is provided with the principal arm telescoping mechanism with above-mentioned feature.
The utlity model has following technique effect:
At first, saved a telescopic oil cylinder, be crane arm loss of weight weight more than 1 ton at least, thereby alleviated complete vehicle weight according to principal arm telescoping mechanism of the present utility model; And because the reduction of crane arm deadweight, then not only reduced productive costs but also improved in long-armedly hang whole vehicle stability when carrying.Secondly, this principal arm telescoping mechanism has been optimized the steel cable layout, and the steel cable consumption is significantly reduced.In addition, because interior telescopic oil cylinder of arm and steel cable quantity reduce, then reduced the assembly difficulty of crane arm.
Should be appreciated that above generality is described and the following detailed description is all enumerated and illustrative, purpose is in order to provide further instruction to claimed the utility model.
Description of drawings
Accompanying drawing is formed the part of this specification sheets, with helping further understand the utility model, in the accompanying drawings:
Fig. 1 is the structural representation that shows according to the principal arm telescoping mechanism of the utility model preferred embodiment.
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing.It should be noted that hereinafter only the utility model feature unlike the prior art to be described,, just do not given unnecessary details here for the technical characterictic that can find in the prior art.
With reference to Fig. 1, be structural representation according to the principal arm telescoping mechanism of the utility model preferred embodiment.As can be seen from the figure, principal arm telescoping mechanism of the present utility model mainly comprises: basic arm 4, the second joint arm 3, the 3rd joint arm 9, the 4th joint arm 7, the 5th joint arm 1, telescopic oil cylinder 12, first steel cable (also can be called " stretching four steel cables ") 8, second steel cable (also can be called " five steel cables contract ") 10, the 3rd steel cable (also can be called " stretch five contract four steel cables ") 2 and mechanical lock 5, wherein telescopic oil cylinder 12 is used to control basic arm 4, the expanding-contracting action of the second joint arm 3 and the 3rd joint arm 9, and above-mentioned three steel cables are used to control the synchronization telescope action of the 4th joint arm 7 and the 5th joint arm 1.
Annexation to each parts is elaborated below, the cylinder barrel of telescopic oil cylinder 12 is fixed on the afterbody of the 3rd joint arm 9, the cylinder bar is provided with cylinder pin 14, and the afterbody of basic arm 4 is provided with the first cylinder pin-and-hole 15, the afterbody of the second joint arm 3 is provided with the second cylinder pin-and-hole 16, and cylinder pin 14 is realized respectively moving with the pin that plugs and unplugs of the first cylinder pin-and-hole 15 and the second cylinder pin-and-hole 16.In addition, the head design of basic arm 4 has an arm pin 13, realizes moving with the pin that plugs and unplugs of the second joint arm 3 by arm pin oil cylinder 11.Mechanical lock 5 is assemblied between the 3rd joint arm 9 and the second joint arm 3, be used to lock two, three joint arms, this mechanical lock 5 is an automatic mechanical lock in the present embodiment, and mechanical lock 5 is opened automatically when the cylinder pin on the telescopic oil cylinder 12 14 inserts the second cylinder pin-and-hole 16 of the second joint arm, 3 afterbodys.Reference number 6 among the figure is flexible pipe rotating disks, is telescopic oil cylinder 12 and cylinder pin oil cylinder 14 fuel feeding.
The layout of row rope is as described below: first steel cable, 8 one ends be fixed to the described second joint arm 3 afterbody, walk around the cylinder barrel head that is arranged on described telescopic oil cylinder 12 first pulley 17 and the other end is fixed to the afterbody of described the 4th joint arm 7, to realize stretching out synchronously of described the 4th joint arm 7 and described the 3rd joint arm 9; Second steel cable, 10 1 ends are fixed to the afterbody of described the 3rd joint arm 9, walk around the 3rd pulley 19 that is arranged on described second joint arm 3 heads and be arranged on second pulley 18 of described the 3rd joint arm 9 afterbodys and the other end is fixed on the afterbody (or head) of described the 5th joint arm 1 successively, to realize the synchronous retraction of described the 5th joint arm 1 and described the 3rd joint arm 9; And the 3rd steel cable 2 one ends are fixed on the head of described the 4th joint arm 7, walk around the 4th pulley 21 that is arranged on described the 5th joint arm 1 afterbody and be arranged on the 5th pulley 20 of described the 4th joint arm 7 heads and the other end is fixed on the afterbody of the described second joint arm 3 successively, to realize stretching out synchronously and the synchronous retraction of described the 4th joint arm 7 and described the 3rd joint arm 9 of described the 5th joint arm 1 and described the 3rd joint arm 9.
For ease of understanding, below the principle of work of stretching out according to principal arm telescoping mechanism of the present utility model is described: at first, the full reduced initial condition of principal arm telescoping mechanism, that is: the first cylinder pin-and-hole, 15 lock pins of the cylinder pin 14 of telescopic oil cylinder 12 and basic arm 4, arm pin 11 is opened, second, third joint arm of mechanical lock 5 lockings.When the rodless cavity oil-feed of telescopic oil cylinder 12, telescopic oil cylinder 12 stretches out, and drives second, third when stretching out, the 4th, the 5th joint arm integral body is stretched out.Stretch out put in place after, the arm pin 13 on basic arm 4 heads pins the second joint arm 3 by arm pin oil cylinder 11.And then, open with the cylinder pin 14 of basic arm 4 afterbodys locking, the rod chamber oil-feed of telescopic oil cylinder 12, the cylinder bar is recycled to the afterbody of the second joint arm 3, cylinder pin 14 engaged locking with the afterbody second cylinder pin-and-hole 16 of the second joint arm 3 after telescopic oil cylinder 12 retractions put in place, in the time of locking, automatic mechanical lock 5 is opened.When telescopic oil cylinder 12 stretches out once more, then drive the 3rd joint arm 9 and stretch out, simultaneously, realize that by first steel cable 8, the 3rd steel cable 2 the 4th, the 5th joint arm and the 3rd joint arm 9 stretch out synchronously, thereby finished the action of stretching out of principal arm telescoping mechanism.
The principle of work of principal arm telescoping mechanism withdrawal is as follows: at first, telescopic oil cylinder 12 retractions, the 3rd, the 4th, the 5th joint arm is withdrawn synchronously.After withdrawal put in place, cylinder pin 14 withdrawed from from the second cylinder pin-and-hole 16 of the second joint arm, 3 afterbodys, and mechanical lock 5 automatically locks second, third joint arm simultaneously.And then, telescopic oil cylinder 12 stretches out, stretch out put in place after, cylinder pin 14 engages locking with the first cylinder pin-and-hole 15 of basic arm 4 afterbodys.Then, the arm pin 13 on basic arm 4 heads is opened.Last telescopic oil cylinder 12 retractions are finished principal arm telescoping mechanism withdrawal action.
Should be pointed out that cylinder pin 14 is arranged on the cylinder boom end of telescopic oil cylinder 12, its purpose is, makes to the layout of the hydraulic oil pipe of telescopic oil cylinder 12 fuel feeding conveniently, equally also is convenient to maintenance of equipment.Arm pin 13 and arm pin oil cylinder 11 are arranged the outside of principal arm telescoping mechanism, specifically are arranged in the head of basic arm 4, are convenient to the layout and the maintenance of equipment of hydraulic oil pipe equally.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. principal arm telescoping mechanism comprises: basic arm (4), the second joint arm (3), the 3rd joint arm (9), the 4th joint arm (7), the 5th a joint arm (1) and a telescopic oil cylinder (12), it is characterized in that,
Described principal arm telescoping mechanism comprises the mechanical lock (5) that is arranged between described second joint arm (3) and the 3rd joint arm (9), wherein, the cylinder barrel of described telescopic oil cylinder (12) is fixed on the afterbody of described the 3rd joint arm (9), the cylinder bar of described telescopic oil cylinder (12) is provided with cylinder pin (14), and the afterbody of described basic arm (4) is provided with the first cylinder pin-and-hole (15), the afterbody of the described second joint arm (3) is provided with the second cylinder pin-and-hole (16)
Described principal arm telescoping mechanism comprises:
First steel cable (8), an end be fixed to described second the joint arm (3) afterbody, walk around the cylinder barrel head that is arranged on described telescopic oil cylinder (12) first pulley (17) and the other end be fixed to described the 4th the joint arm (7) afterbody;
Second steel cable (10), an end are fixed to the afterbody of described the 3rd joint arm (9), walk around the 3rd pulley (19) that is arranged on described second joint arm (3) head and be arranged on second pulley (18) of described the 3rd joint arm (9) afterbody and the other end is fixed on the described the 5th and saves on the arm (1) successively; And
The 3rd steel cable (2), an end are fixed on the head of described the 4th joint arm (7), walk around the 4th pulley (21) that is arranged on described the 5th joint arm (1) afterbody and be arranged on the 5th pulley (20) of described the 4th joint arm (7) head and the other end is fixed on described second afterbody that saves arm (3) successively.
2. principal arm telescoping mechanism according to claim 1 is characterized in that, described cylinder pin (14) is arranged on the cylinder boom end of described telescopic oil cylinder (12).
3. principal arm telescoping mechanism according to claim 1 is characterized in that, comprises the arm pin (13) and the arm pin oil cylinder (11) of locking described basic arm (4) and the described second joint arm (3).
4. principal arm telescoping mechanism according to claim 3 is characterized in that, described arm pin (13) and arm pin oil cylinder (11) are arranged in the head of described basic arm (4).
5. principal arm telescoping mechanism according to claim 1 is characterized in that, described mechanical lock (5) is an automatic mechanical lock.
6. a car hosit is characterized in that, is provided with according to each described principal arm telescoping mechanism among the claim 1-5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202935268U CN201694761U (en) | 2009-12-04 | 2009-12-04 | Main arm telescopic mechanism and automobile crane with same |
| PCT/CN2010/074709 WO2011066752A1 (en) | 2009-12-04 | 2010-06-29 | Main boom telescoping mechanism and vehicle crane with said main boom telescoping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202935268U CN201694761U (en) | 2009-12-04 | 2009-12-04 | Main arm telescopic mechanism and automobile crane with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201694761U true CN201694761U (en) | 2011-01-05 |
Family
ID=43396003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202935268U Expired - Fee Related CN201694761U (en) | 2009-12-04 | 2009-12-04 | Main arm telescopic mechanism and automobile crane with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201694761U (en) |
| WO (1) | WO2011066752A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285598A (en) * | 2011-06-22 | 2011-12-21 | 三一汽车起重机械有限公司 | Multi-section arm telescopic device and crane with same |
| CN102735172A (en) * | 2012-06-25 | 2012-10-17 | 三一重工股份有限公司 | Boom length measuring device, boom length measuring method and telescopic boom |
| CN103058077A (en) * | 2012-12-27 | 2013-04-24 | 三一重工股份有限公司 | A crane and a boom thereof |
| CN103466474A (en) * | 2013-08-26 | 2013-12-25 | 三一汽车起重机械有限公司 | Telescopic arm device and automobile crane |
| CN103964322A (en) * | 2014-05-06 | 2014-08-06 | 三一汽车起重机械有限公司 | Telescopic arm device and lifting equipment |
| CN105417410A (en) * | 2015-12-31 | 2016-03-23 | 徐州重型机械有限公司 | Telescoping arm structure with locking mechanism and crane |
| CN107021424A (en) * | 2016-01-29 | 2017-08-08 | 马尼托意大利有限责任公司 | Telescopic arm for self-propelled Work machine |
| CN110980555A (en) * | 2019-12-27 | 2020-04-10 | 三一汽车起重机械有限公司 | Telescopic arm of crane and crane |
| CN113086870A (en) * | 2021-03-26 | 2021-07-09 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| CN113086869A (en) * | 2021-03-26 | 2021-07-09 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| WO2021259254A1 (en) * | 2020-06-23 | 2021-12-30 | 三一汽车起重机械有限公司 | Crane telescopic boom and crane |
| WO2023159752A1 (en) * | 2022-02-22 | 2023-08-31 | 三一汽车起重机械有限公司 | Single-cylinder multi-section boom telescopic mechanism, boom and crane |
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| US4932176A (en) * | 1988-09-19 | 1990-06-12 | Gte Government Systems Corporation | Extendible and retractible mast system |
| JP2668524B2 (en) * | 1996-07-18 | 1997-10-27 | 株式会社タダノ | Simultaneous telescopic boom part with more than 5 steps |
| JP3594425B2 (en) * | 1996-10-28 | 2004-12-02 | 株式会社小松製作所 | Simultaneous telescopic boom with 4 or more steps |
| DE19921104A1 (en) * | 1999-05-04 | 2000-11-16 | Mannesmann Ag | Telescopic boom for cranes |
| JP4283385B2 (en) * | 1999-07-21 | 2009-06-24 | 株式会社タダノ | Simultaneous telescopic mechanism for N-stage telescopic boom |
| CN2714526Y (en) * | 2004-04-30 | 2005-08-03 | 长沙中联重工科技发展股份有限公司浦沅分公司 | Telescopic mechanism for crane |
| CN201214601Y (en) * | 2008-05-07 | 2009-04-01 | 长沙中联重工科技发展股份有限公司 | Main arm telescopic mechanism for crane |
| CN101575075A (en) * | 2009-06-05 | 2009-11-11 | 三一汽车制造有限公司 | Truck crane and multisection synchronous telescopic boom device thereof |
| CN101585491B (en) * | 2009-06-17 | 2011-04-13 | 三一汽车制造有限公司 | Automobile crane and device with multiple sections of telescopic jibs thereof |
-
2009
- 2009-12-04 CN CN2009202935268U patent/CN201694761U/en not_active Expired - Fee Related
-
2010
- 2010-06-29 WO PCT/CN2010/074709 patent/WO2011066752A1/en active Application Filing
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285598A (en) * | 2011-06-22 | 2011-12-21 | 三一汽车起重机械有限公司 | Multi-section arm telescopic device and crane with same |
| CN102735172A (en) * | 2012-06-25 | 2012-10-17 | 三一重工股份有限公司 | Boom length measuring device, boom length measuring method and telescopic boom |
| CN102735172B (en) * | 2012-06-25 | 2015-04-01 | 三一重工股份有限公司 | Boom length measuring device, boom length measuring method and telescopic boom |
| CN103058077B (en) * | 2012-12-27 | 2015-10-28 | 三一重工股份有限公司 | Hoisting crane and crane arm thereof |
| CN103058077A (en) * | 2012-12-27 | 2013-04-24 | 三一重工股份有限公司 | A crane and a boom thereof |
| CN103466474A (en) * | 2013-08-26 | 2013-12-25 | 三一汽车起重机械有限公司 | Telescopic arm device and automobile crane |
| CN103466474B (en) * | 2013-08-26 | 2015-10-14 | 三一汽车起重机械有限公司 | Telescopic boom device and car hosit |
| CN103964322A (en) * | 2014-05-06 | 2014-08-06 | 三一汽车起重机械有限公司 | Telescopic arm device and lifting equipment |
| CN103964322B (en) * | 2014-05-06 | 2015-10-14 | 三一汽车起重机械有限公司 | Telescopic boom device and weight-lifting equipment |
| CN105417410A (en) * | 2015-12-31 | 2016-03-23 | 徐州重型机械有限公司 | Telescoping arm structure with locking mechanism and crane |
| CN107021424A (en) * | 2016-01-29 | 2017-08-08 | 马尼托意大利有限责任公司 | Telescopic arm for self-propelled Work machine |
| CN107021424B (en) * | 2016-01-29 | 2019-09-03 | 马尼托意大利有限责任公司 | Telescopic arm for self-propelled Work machine |
| CN110980555A (en) * | 2019-12-27 | 2020-04-10 | 三一汽车起重机械有限公司 | Telescopic arm of crane and crane |
| WO2021259254A1 (en) * | 2020-06-23 | 2021-12-30 | 三一汽车起重机械有限公司 | Crane telescopic boom and crane |
| CN113086870A (en) * | 2021-03-26 | 2021-07-09 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| CN113086869A (en) * | 2021-03-26 | 2021-07-09 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| CN113086870B (en) * | 2021-03-26 | 2022-06-21 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| WO2023159752A1 (en) * | 2022-02-22 | 2023-08-31 | 三一汽车起重机械有限公司 | Single-cylinder multi-section boom telescopic mechanism, boom and crane |
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| WO2011066752A1 (en) | 2011-06-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20161204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |