CN102826464B - Crawler crane mobile counterweight device and crawler crane - Google Patents
Crawler crane mobile counterweight device and crawler crane Download PDFInfo
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- CN102826464B CN102826464B CN201210313136.9A CN201210313136A CN102826464B CN 102826464 B CN102826464 B CN 102826464B CN 201210313136 A CN201210313136 A CN 201210313136A CN 102826464 B CN102826464 B CN 102826464B
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Abstract
The invention discloses a crawler crane mobile counterweight device and a crawler crane with the same. The mobile counterweight device comprises a mobile counterweight unit, a first connecting device and a second connecting device, wherein one end of the first connecting device is connected with the mobile counterweight unit, while the other end is used for being detachably connected with a platform beam of a free end of a crane platform; and one end of the second connecting device is connected with the mobile counterweight unit, while the other end is used for being detachably and respectively connected with a platform left longitudinal beam and a platform right longitudinal beam of the platform, which are close to the free end. According the invention, the mobile counterweight device is connected with the platform and is convenient for disassembly and assembly; the mobile counterweight device is arranged at the outer side of the free end of the platform, and a conventional counterweight hanging point can be reserved so as to realize the selective matching of the mobile counterweight device and a conventional counterweight; and the mobile counterweight device is completely arranged on the platform without influencing super-up counterweight mounting and can be simultaneously used with a super-up counterweight to provide a larger stable moment.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of movable weight counterbalance apparatus and be equiped with the crawler crane of this movable weight counterbalance apparatus.
Background technology
The rear counterweight of tradition crawler crane is bundled in platform afterbody provides fixing-stable moment values to complete machine, and in the time of complete machine work or lift arm, the larger complete machine of moment is more stable; In complete engine set installation or when dismounting, moment too conference causes the tipping backwards of complete machine, and now the less complete machine of moment is more stable.Therefore,, for complete machine, the moment that fixing rear counterweight provides, with two-sidedness, can not be adjusted size by demand in good time.
At present, in order to meet the stability of complete machine under different operating modes, crawler crane generally adopts movable weight counterbalance apparatus.But existing movable weight counterbalance apparatus complicated structure, Assembly &Disassembly difficulty, can not realize the apolegamy function of hoisting crane at conventional counterweight and mobile counterweight; In addition, the installation of existing mobile counterweight is fixing need to use the arm-tie that has surpassed mast, if adopt mobile counterweight, super-starting balance weight can not use, thereby can not reach the lifting function of super-starting balance weight.
Summary of the invention
In view of this, the present invention proposes a kind of movable weight counterbalance apparatus of crawler crane and is equiped with the crawler crane of this movable weight counterbalance apparatus, with solve existing mobile counterweight dismounting difficulty and can not with the problem of conventional counterweight and super-starting balance weight compatibility.
On the one hand, the invention provides a kind of movable weight counterbalance apparatus of crawler crane, comprise mobile counterweight unit, the first connecting device, the second connecting device; Described first connecting device one end connects described mobile counterweight unit, and the other end is for removably connecting with the free-ended platform crossbeam of hoisting crane platform; Described second connecting device one end connects described mobile counterweight unit, and the other end is for removably connecting near the left longeron of free-ended platform, platform right vertical beam with described platform respectively.
Further, described mobile counterweight unit comprises: U-shaped framework, and described U-shaped framework is for being arranged on the free end outside of described platform and the free end of described platform being surrounded; The closed end that described U-shaped framework is relative with its open end is used for removably connecting by described the first connecting device and described platform crossbeam; The left beam of described U-shaped framework, the right beam of U-shaped framework are for removably connecting with the left longeron of described platform, described platform right vertical beam respectively by described the second connecting device; Move left parts, the parts that move right, counterweight pallet; The described parts that move left are arranged on the left beam of U-shaped framework movably, described in the parts that move right be arranged on movably on the left beam of U-shaped framework, described counterweight pallet with described in move left parts and the parts that move right are connected; Left drive element, right drive element, described left drive element with described in move left parts and be connected, described in being used for driving, move left parts moves on the left beam of described U-shaped framework, described right drive element with described in the parts that move right be connected, move on the right beam of described U-shaped framework for the parts that move right described in driving.
Further, described the first connecting device is two truss structure connecting devices, and described the second connecting device is two pipe links.
Further, described left drive element, right drive element comprise respectively: left oil cylinder, right oil cylinder, described left oil cylinder one end with described in move left parts and be connected, the other end is connected with the left beam of described U-shaped framework, described right oil cylinder one end with described in the parts that move right be connected, the other end is connected with the right beam of described U-shaped framework.
Further, describedly move left parts, the parts that move right also comprise respectively: the kinetoplast that rolls left, right rolling body, one end of described left oil cylinder, described right oil cylinder respectively with corresponding described in roll left kinetoplast, described right rolling body hinged, the other end is hinged with the corresponding left beam of described U-shaped framework, the right beam of U-shaped framework respectively.
Further, roll left described in kinetoplast, described right rolling body also comprises respectively: left cylinder bracket, right cylinder bracket; One end of described left oil cylinder, described right oil cylinder is hinged with corresponding described left cylinder bracket, right cylinder bracket respectively, and the other end is hinged with the corresponding left beam of described U-shaped framework, the right beam of U-shaped framework respectively.
Further, described mobile counterweight unit also comprises the first detecting device, for detection of the synchronous situation of described left oil cylinder and described right oil cylinder; First control device, the detection signal of described the first detecting device outputs to described first control device, the control signal of described first control device outputs to described left oil cylinder, described right oil cylinder, for control described left oil cylinder with described right oil cylinder in synchronizeing.
Further, on described left oil cylinder, described right oil cylinder, be equipped with balance cock.
In technical scheme provided by the invention, the first connecting device, the second connecting device are connected to described movable weight counterbalance apparatus of crawler crane the free end of crawler crane platform, the technique effect reaching has: first, described mobile inking device is connected on crawler crane platform by the first connecting device, the second connecting device, make the Assembly &Disassembly of described mobile inking device all very convenient, while not needing described movable weight counterbalance apparatus, only need lower described first, second connecting device of dismounting, just described movable weight counterbalance apparatus can be separated with described platform; Secondly, described movable weight counterbalance apparatus is connected on the free-ended crossbeam of platform and longeron of crawler crane, described movable weight counterbalance apparatus is positioned at the platform outside of crawler crane, do not affect the reservation of conventional counterweight hanging point on described platform, meet the apolegamy requirement of described movable weight counterbalance apparatus and conventional counterweight.Because described movable weight counterbalance apparatus is positioned at described platform outside, facilitate maintenance and the maintenance of described movable weight counterbalance apparatus and described platform simultaneously; Again, described movable weight counterbalance apparatus integral installation and being supported on described platform, does not affect the installation of super-starting balance weight, can use with super-starting balance weight simultaneously, and larger balancing torque can be provided.
On the other hand, the present invention also provides a kind of crawler crane that is equiped with this movable weight counterbalance apparatus.
Further, described crawler crane also comprises: second detection device, for detection of the displacement of described movable weight counterbalance apparatus; Calculate read out instrument, receive detected value and the default lifting load value of described second detection device, calculate described hoisting crane margin of stability and show; Second controller, receives the signal from described read out instrument, controls the flexible of described left and right oil cylinder.
This crawler crane has all advantages and the technique effect that described movable weight counterbalance apparatus has, and repeats no more herein.
Brief description of the drawings
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the movable weight counterbalance apparatus of crawler crane of the specific embodiment of the invention and the scheme of installation of crawler crane platform;
Fig. 2 is the perspective view of the movable weight counterbalance apparatus of crawler crane of the specific embodiment of the invention;
Fig. 3 is the perspective view of the first connecting device in the movable weight counterbalance apparatus of crawler crane of the specific embodiment of the invention;
Fig. 4 is the perspective view of rolling body in the movable weight counterbalance apparatus of crawler crane of the specific embodiment of the invention;
Fig. 5 is crawler crane schematic diagram provided by the present invention;
Fig. 6 is the working state schematic representation of crawler crane provided by the present invention during with super-starting balance weight.
Description of reference numerals
1 crawler crane platform 3 mobile counterweight unit
The U-shaped framework 36 counterweight pallets of 21 first connecting device 22 second connecting device 31
The U-shaped framework closed end of the right beam 313 of the U-shaped framework of the left beam 312 of 311 U-shaped framework
The 321 right rolling bodys of kinetoplast 322 that roll left
The right oil cylinder of 331 left oil cylinder 332
The right cylinder bracket of 341 left cylinder bracket 342
351 move left parts 352 parts that move right
Detailed description of the invention
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Basic thought of the present invention is: in order to solve movable weight counterbalance apparatus of crawler crane Assembly &Disassembly inconvenience, can not match with conventional counterweight, can not with the problem such as super-starting balance weight uses simultaneously, the invention provides a kind of movable weight counterbalance apparatus of crawler crane and be equiped with this crawler crane that moves inking device.This movable weight counterbalance apparatus of crawler crane adopts connecting device to be connected with crawler crane platform free end, facilitates dismounting and the installation of described movable weight counterbalance apparatus; Described movable weight counterbalance apparatus is arranged on described platform free end outside, does not affect the reservation of conventional counterweight hanging point on described platform, can realize the apolegamy of described movable weight counterbalance apparatus and conventional counterweight; Described movable weight counterbalance apparatus is arranged on described platform completely, does not affect the installation of super-starting balance weight, can use with super-starting balance weight simultaneously, and larger balancing torque can be provided.
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in further detail:
Shown in Fig. 1, movable weight counterbalance apparatus of crawler crane provided by the present invention comprises: mobile counterweight unit 3, the first connecting device 21, the second connecting devices 22; First connecting device 21 one end connect mobile counterweight unit 3, and the free-ended platform crossbeam 13 of the other end and hoisting crane platform 1 removably connects; Second connecting device 22 one end connect mobile counterweight unit 3, and the other end removably connects near the left longeron 11 of free-ended platform, platform right vertical beam 12 with platform 1 respectively.The first connecting device 21, the second connecting device 22 are not limited to be independent of states the self-existent connecting device in mobile counterweight unit 3, can be also a part for mobile counterweight unit 3, equally within protection scope of the present invention.In addition, specific constructive form and the quantity of the first connecting device 21 and the second connecting device 22, be intended to realize the stable and stress equalization of mobile counterweight unit 3 and platform 1 and link together, and do not limit herein.The first connecting device 21, the second connecting device 22 can be connected by bearing pin, bolt, clamp etc. with platform; object makes movable weight counterbalance apparatus be installed to fast, easily on platform 1 or from platform 1 dismounting, the thinkable connection mode that other can realize this object of those skilled in the art is also within protection scope of the present invention.
Fig. 2-4 are the preferred embodiment accompanying drawing of mobile counterweight unit 3 and associated components in movable weight counterbalance apparatus provided by the present invention.
As shown in Figure 2: mobile counterweight unit 3 comprises: U-shaped framework 31, left and right driving parts, left and right moving-member, counterweight pallet 36; U-shaped framework 31 is for being arranged on the free end outside of platform 1 and the free end of platform 1 being surrounded; U-shaped framework 31 closed end 313 relative with its open end is for removably connecting with platform crossbeam 13 by the first connecting device 21; The left beam 311 of U-shaped framework, the right beam 312 of U-shaped framework are for removably connecting with the left longeron 11 of platform, platform right vertical beam 12 respectively by the second connecting device 22; Moving left parts 351 is arranged on the left beam 311 of U-shaped framework movably, the parts 352 that move right are arranged on the left beam 312 of U-shaped framework movably, counterweight pallet 36 with move left parts 351 and the parts 352 that move right are connected, left drive element with move left parts 351 and be connected, move left parts 351 for driving moves on the left beam 311 of U-shaped framework, right drive element is connected with the parts 352 that move right, and moves on the right beam 312 of U-shaped framework for the parts that move right described in driving.
In technique scheme, the Main Function of U-shaped framework 31 is that fixed drive parts and connecting device are installed.Left and right driving parts provide mobile propulsive effort for mobile counterweight unit, the propulsive effort that left and right moving-member produces left and right driving parts is delivered to counterweight pallet 36, along with the movement of counterweight pallet 36, the anti-tilting moment of hoisting crane can be adjusted at any time, thereby realizes the function that different moment is provided in different occasions.
Preferably, the first connecting device 21 is two truss structure connecting devices, as shown in Figure 3.This truss structure is projected as isosceles triangular structure in the plane vertical with U-shaped framework, and its drift angle is connected with U-shaped framework as a coupling end, and two base angles are connected with platform crossbeam 13 as another coupling end.If because truss structure has neither one or the more deformation of member in the time being subject to external force, the feature that total can not be out of shape, the first connecting device 21 can bear the load that mobile counterweight unit 3 produces well; And two of layouts have the first connecting devices 21 of truss structure, and at first connecting device 21 of the each layout in the both ends of platform crossbeam 13, make the connection of mobile counterweight unit 3 and platform 1 more stable, certainly, it is also feasible that first connecting device 21 is set, now need the first connecting device 21 to strengthen along the size in its direction vertical with platform closure, avoid mobile counterweight unit 3 to produce tilting moment along the first connecting device 21.The second connecting device 22 is for being connected U-shaped framework left and right side with the left and right longeron of corresponding platform, the second connecting device 22 is owing to not needing the load that carrying is larger, can meet the demands with the connecting device of the version such as pipe link or box beam, make movable weight counterbalance apparatus simple in structure.
Preferably, left drive element, right drive element comprise respectively: left oil cylinder 331, right oil cylinder 332, left oil cylinder 331 one end with move left parts 351 and be connected, the other end is connected with the left beam 311 of U-shaped framework, right oil cylinder 332 one end are connected with the parts 352 that move right, and the other end is connected with the right beam 312 of U-shaped framework.Flexible by left oil cylinder 331, right oil cylinder 332, can drive and move left accordingly parts 351, the parts 352 that move right move, thereby makes the counterweight pallet 36 being connected with moving-member produce corresponding movement, and the anti-tilting moment of hoisting crane is adjusted.
Preferably, move left parts, the parts that move right also comprise respectively: the kinetoplast 321 that rolls left, right rolling body 322, one end of left oil cylinder 331, right oil cylinder 332 is hinged with the corresponding kinetoplast 321 that rolls left, right rolling body 322 respectively, and the other end is hinged with the corresponding left beam 311 of U-shaped framework, the right beam 312 of U-shaped framework respectively; By increase rolling body between oil cylinder and moving-member, change the cliding friction between oil cylinder and moving-member into friction of rolling, friction force is less, the travelling performance of movable weight counterbalance apparatus is better, the stroke of oil cylinder can rapid reaction to counterweight pallet, can adjust faster the anti-tilting moment of crawler crane.
Preferably, roll left kinetoplast 321, right rolling body 322 also comprises respectively left cylinder bracket 341, right cylinder bracket 342; One end of left oil cylinder 331, right oil cylinder 332 is hinged with corresponding left cylinder bracket 341, right cylinder bracket 342 respectively, and the other end is hinged with the corresponding left beam 311 of U-shaped framework, the right beam 312 of U-shaped framework respectively.When oil cylinder is directly connected with rolling body and U-shaped framework, because oil cylinder stroke is certain, need to, by the Design of length long enough of U-shaped framework left and right side, adopt after cylinder bracket, can shorten the length of U-shaped framework left and right side, the weight of U-shaped framework.
Preferably, mobile counterweight unit 3 also comprises the first detecting device, the synchronous situation for detection of left oil cylinder 331 with described right oil cylinder 332; The detection signal of the first detecting device outputs to first control device, and the control signal of first control device outputs to left oil cylinder 331, right oil cylinder 332, for control left oil cylinder 331 with right oil cylinder 332 in synchronizeing.Laser is installed on mobile counterweight unit 3, infrared or whether other detecting devices synchronous for detection of left oil cylinder 331 and right oil cylinder 332, in the time detecting that left oil cylinder 331 is asynchronous with right oil cylinder 332, send and adjust signal to first control device, first control device enters left oil cylinder 331 or right oil cylinder 332 oil mass by adjustment, realizes both synchronous.Preferably, on left oil cylinder 331, right oil cylinder 332, balance cock is set, realizes locking and the pressure holding function of left and right oil cylinder, make movable weight counterbalance apparatus more reliable and more stable.
On the other hand, the invention provides a kind of crawler crane, this crawler crane is equiped with movable weight counterbalance apparatus of crawler crane provided by the present invention.Preferably, crawler crane also comprises: second detection device, for detection of the displacement of movable weight counterbalance apparatus; Calculate read out instrument, receive detected value and the default lifting load value of second detection device, calculate complete machine margin of stability and show; Second controller, receives the signal from read out instrument, controls the flexible of left and right oil cylinder.
In technique scheme, the stroke of setting left and right oil cylinder is L, the displacement of movable weight counterbalance apparatus obtains by second detection device (as sensor or apomecometer), the weight of movable weight counterbalance apparatus is T,: when oil cylinder is retracted to stroke the most in short-term, be that movable weight counterbalance apparatus is nearest from revolution center of gravity, now movable weight counterbalance apparatus provides balancing torque M1; When oil cylinder is elongated to stroke when the longest, from revolution center of gravity farthest, now counterweight provides balancing torque M2 to movable weight counterbalance apparatus; Movable weight counterbalance apparatus is that crawler crane increases moment: △ M=M2-M1=LT.Because tilting moment is fixed value in one timing of lifting load, only needing increases balancing torque by mobile inking device, makes complete machine margin of stability K≤0.75, and (K is complete machine margin of stability, for tilting moment and the ratio of balancing torque), crawler crane does not just have the danger of tumbling.In whole hoisting process, lifting load has been pre-entered in read out instrument, it is a fixed value that tilting moment lifts load relatively, the real-time displacement of the mobile counterweight that only second detection device need be detected is input to read out instrument, read out instrument just shows complete machine margin of stability K in real time, in the time of K>0.75, the stroke of adjusting oil cylinder by second control device increases, to meet complete machine margin of stability K≤0.75.When installing/dismounting main frame, the moment that movable weight counterbalance apparatus provides can change the tilting moment that causes negative effect into, now shrinks by second control device control oil cylinder, can reach balance, make complete machine margin of stability K≤0.75, crawler crane does not have the danger of tumbling.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a movable weight counterbalance apparatus of crawler crane, is characterized in that, comprises mobile counterweight unit (3), the first connecting device (21) and the second connecting device (22); Described the first connecting device (21) one end connects described mobile counterweight unit (3), and the other end is for removably connecting with the free-ended platform crossbeam of hoisting crane platform (1) (13); Described the second connecting device (22) one end connects described mobile counterweight unit (3), and the other end is for removably connecting near the left longeron of free-ended platform (11), platform right vertical beam (12) with described platform (1) respectively;
Wherein, described mobile counterweight unit (3) comprising:
U-shaped framework (31), described U-shaped framework (31) is outside and the free end of described platform (1) is surrounded for being arranged on the free end of platform (1) of hoisting crane; The described U-shaped framework U-shaped framework closed end (313) relative with its open end is for removably connecting by described the first connecting device (21) and platform crossbeam (13); The left beam of U-shaped framework (311), the right beam of U-shaped framework (312) are for removably connecting with the left longeron of platform (11), platform right vertical beam (12) respectively by described the second connecting device (22);
Move left parts (351), the parts that move right (352) and counterweight pallet (36); The described parts (351) that move left are arranged on the left beam of U-shaped framework (311) movably, it is upper that the described parts that move right (352) are arranged on the right beam of U-shaped framework (312) movably, described counterweight pallet (36) with described in move left parts (351) and the parts that move right (352) are connected;
Left drive element and right drive element; Described left drive element with described in move left parts (351) and be connected, described in being used for driving, move left parts (351) upper mobile at the left beam of described U-shaped framework (311), described right drive element with described in the parts (352) that move right be connected, upper mobile at the right beam of described U-shaped framework (312) for the parts that move right described in driving.
2. movable weight counterbalance apparatus of crawler crane according to claim 1, is characterized in that, described the first connecting device (21) is two truss structure connecting devices, and described the second connecting device (22) is two pipe links.
3. movable weight counterbalance apparatus of crawler crane according to claim 1, is characterized in that, described left drive element, right drive element comprise respectively: left oil cylinder (331), right oil cylinder (332); Described left oil cylinder (331) one end with described in move left parts (351) and be connected, the other end is connected with the left beam of described U-shaped framework (311), described right oil cylinder (332) one end with described in the parts (352) that move right be connected, the other end is connected with the right beam of described U-shaped framework (312).
4. movable weight counterbalance apparatus of crawler crane according to claim 3, is characterized in that, described in move left parts, the parts that move right also comprise respectively: the kinetoplast that rolls left (321), right rolling body (322),
One end of described left oil cylinder (331), described right oil cylinder (332) respectively with corresponding described in roll left kinetoplast (321), described right rolling body (322) hinged, the other end is hinged with the corresponding left beam of described U-shaped framework (311), the right beam of U-shaped framework (312) respectively.
5. movable weight counterbalance apparatus of crawler crane according to claim 4, it is characterized in that, described in roll left kinetoplast (321), described right rolling body (322) also comprise respectively: left cylinder bracket (341), right cylinder bracket (342);
One end of described left oil cylinder (331), described right oil cylinder (332) is hinged with corresponding described left cylinder bracket (341), right cylinder bracket (342) respectively, and the other end is hinged with the corresponding left beam of described U-shaped framework (311), the right beam of U-shaped framework (312) respectively.
6. movable weight counterbalance apparatus of crawler crane according to claim 5, it is characterized in that, described mobile counterweight unit (3) also comprises: the first detecting device, the synchronous situation for detection of described left oil cylinder (331) with described right oil cylinder (332); First control device, the detection signal of described the first detecting device outputs to described first control device, the control signal of described first control device outputs to described left oil cylinder (331), described right oil cylinder (332), for control described left oil cylinder (331) with described right oil cylinder (332) in synchronizeing.
7. movable weight counterbalance apparatus of crawler crane according to claim 6, is characterized in that, on described left oil cylinder (331), described right oil cylinder (332), is equipped with balance cock.
8. a crawler crane, is characterized in that, comprises the movable weight counterbalance apparatus of crawler crane as described in claim 1-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210313136.9A CN102826464B (en) | 2012-08-29 | 2012-08-29 | Crawler crane mobile counterweight device and crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210313136.9A CN102826464B (en) | 2012-08-29 | 2012-08-29 | Crawler crane mobile counterweight device and crawler crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102826464A CN102826464A (en) | 2012-12-19 |
| CN102826464B true CN102826464B (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210313136.9A Expired - Fee Related CN102826464B (en) | 2012-08-29 | 2012-08-29 | Crawler crane mobile counterweight device and crawler crane |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195128A (en) * | 2013-04-17 | 2013-07-10 | 鼎盛重工机械有限公司 | Breakout force balancing system of loader |
| CN103964317A (en) * | 2014-04-24 | 2014-08-06 | 浙江三一装备有限公司 | Tracked crane |
| DE202014007894U1 (en) * | 2014-09-29 | 2014-10-22 | Liebherr-Werk Ehingen Gmbh | Crane, preferably derrick crane |
| CN104326383B (en) * | 2014-10-14 | 2017-03-01 | 太原重工股份有限公司 | Crane and its moment self balancing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4083459A (en) * | 1977-04-21 | 1978-04-11 | Caterpillar Tractor Co. | Mounting apparatus for a counterweight assembly |
| CN102020210A (en) * | 2009-08-06 | 2011-04-20 | 马尼托瓦克起重机有限责任公司 | Lift crane with moveable counter weight |
| CN201952140U (en) * | 2011-01-19 | 2011-08-31 | 上海三一科技有限公司 | Movable rear counterweight device of crawler crane |
| CN102491200A (en) * | 2011-12-22 | 2012-06-13 | 上海三一科技有限公司 | Movable counter weight structure of crawler crane and crane comprising movable counter weight structure |
| CN102515041A (en) * | 2011-10-28 | 2012-06-27 | 上海三一科技有限公司 | Movable weight counterbalance apparatus of crawler crane and crane containing apparatus thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056009A (en) * | 2001-08-20 | 2003-02-26 | Shin Caterpillar Mitsubishi Ltd | Swing-out type counterweight construction for motor vehicle |
-
2012
- 2012-08-29 CN CN201210313136.9A patent/CN102826464B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4083459A (en) * | 1977-04-21 | 1978-04-11 | Caterpillar Tractor Co. | Mounting apparatus for a counterweight assembly |
| CN102020210A (en) * | 2009-08-06 | 2011-04-20 | 马尼托瓦克起重机有限责任公司 | Lift crane with moveable counter weight |
| CN201952140U (en) * | 2011-01-19 | 2011-08-31 | 上海三一科技有限公司 | Movable rear counterweight device of crawler crane |
| CN102515041A (en) * | 2011-10-28 | 2012-06-27 | 上海三一科技有限公司 | Movable weight counterbalance apparatus of crawler crane and crane containing apparatus thereof |
| CN102491200A (en) * | 2011-12-22 | 2012-06-13 | 上海三一科技有限公司 | Movable counter weight structure of crawler crane and crane comprising movable counter weight structure |
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| CN102826464A (en) | 2012-12-19 |
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