CN103303825A - Amplitude variation type mechanism of movable arm tower type crane and movable arm tower type crane - Google Patents
Amplitude variation type mechanism of movable arm tower type crane and movable arm tower type crane Download PDFInfo
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- CN103303825A CN103303825A CN2013102329112A CN201310232911A CN103303825A CN 103303825 A CN103303825 A CN 103303825A CN 2013102329112 A CN2013102329112 A CN 2013102329112A CN 201310232911 A CN201310232911 A CN 201310232911A CN 103303825 A CN103303825 A CN 103303825A
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- luffing
- arm
- amplitude variation
- crane
- tie
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Abstract
The invention relates to an amplitude variation type mechanism of a movable arm tower type crane and the movable arm tower type crane, and aims to effectively reduce the axial force of an arm support in the amplitude variation process and simplify the whole amplitude variation type mechanism. The amplitude variation type mechanism of the movable arm tower type crane comprises a amplitude variation type pull plate, wherein the tail end of the amplitude variation type pull plate is hinged onto the arm support of the crane; an amplitude variation type oil cylinder is arranged between the amplitude variation type pull plate and a cabinet of the crane; under the action of the amplitude variation type oil cylinder, the amplitude variation type pull plate swings; the amplitude variation type pull plate, the arm support of the crane, the cabinet of the crane and the amplitude variation type oil cylinder form a quadrangular framework structure. The movable arm tower type crane comprises the cabinet, the arm support arranged on the cabinet, and an amplitude variation type mechanism body arranged between the cabinet and the arm support; the amplitude variation type mechanism body is the amplitude variation mechanism disclosed by the invention.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of arm tower crane luffing mechanism.The invention still further relates to a kind of arm tower crane that comprises above-mentioned luffing mechanism.
Background technology
Existing arm tower crane many by the luffing winch and be arranged in Shears and the luffing arm-tie between the luffing pulley block system realize the luffing motion of jib, this mode often needs high-performance luffing winch, causes the complete machine high cost; In addition, the relative complete machine in luffing fixed pulley locus fixedly causes on the Shears, along with amplitude increase luffing arm-tie and jib axis angle diminish, increases jib axle power, has accelerated to a certain extent the decay of far-end hoisting capacity.
Summary of the invention
The object of the invention has provided a kind of arm tower crane luffing mechanism, can realize effectively reducing jib axle power in the amplitude changing process and simplifying whole luffing mechanism.
Another object of the present invention provides a kind of arm tower crane that comprises above-mentioned arm tower crane luffing mechanism.
To achieve these goals, the technical solution used in the present invention is:
A kind of arm tower crane luffing mechanism, comprise the luffing arm-tie, luffing arm-tie end is articulated on the jib of hoisting crane, be provided with amplitude oil cylinder between the board of luffing arm-tie and hoisting crane, the luffing arm-tie is at the effect lower swing of amplitude oil cylinder, and the jib of luffing arm-tie, hoisting crane, the board of hoisting crane and amplitude oil cylinder consist of the quadrilateral frame shelf structure.
Preferably, also include front strut, front strut one end is articulated on the board of hoisting crane, and its other end is articulated on the luffing arm-tie.
Preferably, amplitude oil cylinder one end is hinged on the board of hoisting crane, and the other end is hinged on luffing arm-tie initiating terminal.
Preferably, the arm support tail end of luffing arm-tie and hoisting crane is hinged.
Preferably, front strut is a diagonal line of quadrilateral frame.
Preferably, luffing arm-tie length is fixed, and the angle in the whole amplitude changing process between luffing arm-tie and the jib is fixed.
The present invention also provides a kind of arm tower crane, comprises board, is installed on the jib on the board, and be installed on the luffing mechanism between board and the jib, and luffing mechanism is above-mentioned luffing mechanism.
Principle of work of the present invention:
When amplitude oil cylinder is stretched out, rely on jib deadweight and lift heavy, jib is around the hinge-point clickwise, and the rotation of drive luffing arm-tie, and the jib elevation angle reduces amplitude and increases; When the contraction of amplitude oil cylinder, overcome the moment that jib deadweight and lift heavy produce, jib is around the hinge-point left-hand revolution, and drives the rotation of luffing arm-tie, and increase amplitude in the jib elevation angle reduces; The luffing arm-tie plays tensioning function in this process, make that amplitude oil cylinder is subjected to pulling force all the time in the whole amplitude changing process, and the angle of luffing arm-tie and jib remains unchanged simultaneously, thereby effectively reduces significant jib axle power.
Beneficial effect of the present invention:
The present invention can realize in the arm tower crane luffing operation process, reduces jib axle power, simplifies simultaneously luffing mechanism, reduces the complete machine cost.
Description of drawings
Fig. 1 is structural representation front elevation of the present invention.
Among the figure: 1, jib, 2, board, 3, Shears, the 4, first bearing pin, 5, front strut, the 6, the 4th bearing pin, 7, amplitude oil cylinder, the 8, second bearing pin, 9, the luffing arm-tie, the 10, the 3rd bearing pin.
The specific embodiment
Illustrate selected embodiment of the present invention referring now to Figure of description, the following explanation of embodiments of the invention only is exemplary, the scheme that is not meant to limit the present invention.
With reference to the accompanying drawings 1, a kind of arm tower crane luffing mechanism, comprise luffing arm-tie 9, luffing arm-tie 9 ends are articulated on the jib 1 of hoisting crane, be provided with amplitude oil cylinder 7 between the board 2 of luffing arm-tie 9 and hoisting crane, luffing arm-tie 9 is at the effect lower swing of amplitude oil cylinder 7, and the jib 1 of luffing arm-tie 9, hoisting crane, the board 2 of hoisting crane and amplitude oil cylinder 7 consist of the quadrilateral frame shelf structure.
In the present embodiment, also include front strut 5, front strut 5 is a diagonal line of quadrilateral frame., front strut 5 one ends are articulated on the board 2 of hoisting crane, and its other end is articulated on the luffing arm-tie 9,
In the present embodiment, amplitude oil cylinder 7 one ends are hinged on the board 2 of hoisting crane, and the other end is hinged on luffing arm-tie 9 initiating terminals.
In the present embodiment, luffing arm-tie 9 is terminal hinged with the jib 1 of hoisting crane.
In the present embodiment, luffing arm-tie 9 length are fixed, and the angle in the whole amplitude changing process between luffing arm-tie 9 and the jib 1 is fixed.
In the present embodiment, the upper link point of luffing arm-tie 9 is connected by the 3rd bearing pin 10 with jib 1, be connected by the second bearing pin 8 between the upper link point of the lower link point of luffing arm-tie 9 and amplitude oil cylinder 7 and front strut 5 upper link points, the lower link point of amplitude oil cylinder 7 is connected by the first bearing pin 4 with board 2 at hoisting crane, and front strut 5 upper link points are connected by the 4th bearing pin 6 with board 2 at hoisting crane.
In the present embodiment, also has Shears 3.
A kind of arm tower crane comprises board 2, is installed on the jib 1 on the board 2, and is installed on the luffing mechanism between board 2 and the jib 1, and luffing mechanism is above-mentioned luffing mechanism, and other parts of this arm tower crane are prior art, repeat no more.
When amplitude oil cylinder 7 is stretched out, rely on jib 1 deadweight and lift heavy, jib 1 elevation angle reduces amplitude and increases; When the contraction of amplitude oil cylinder 7, overcome the moment that jib 1 deadweight and lift heavy produce, jib 1 elevation angle increase amplitude reduces, and amplitude oil cylinder 7 is subjected to pulling force all the time in the whole amplitude changing process.
Groundwork of the present invention and advantage have more than been described.The present invention is not restricted to the described embodiments, and in the prerequisite that does not break away from the scope of the invention, those skilled in the art can do many changes and improvements as required.Protection domain of the present invention should be defined by appending claims and equivalent thereof.
Claims (7)
1. arm tower crane luffing mechanism, it is characterized in that: comprise luffing arm-tie (9), luffing arm-tie (9) end is articulated on the jib (1) of hoisting crane, be provided with amplitude oil cylinder (7) between the board (2) of luffing arm-tie (9) and hoisting crane, luffing arm-tie (9) is at the effect lower swing of amplitude oil cylinder (7), and the jib (1) of luffing arm-tie (9), hoisting crane, the board (2) of hoisting crane and amplitude oil cylinder (7) consist of the quadrilateral frame shelf structure.
2. described arm tower crane luffing mechanism according to claim 1, it is characterized in that: also include front strut (5), front strut (5) one ends are articulated on the board (2) of hoisting crane, and its other end is articulated on the luffing arm-tie (9).
3. described arm tower crane luffing mechanism according to claim 1, it is characterized in that: amplitude oil cylinder (7) one ends are hinged on the board (2) of hoisting crane, and the other end is hinged on luffing arm-tie (9) initiating terminal.
4. described arm tower crane luffing mechanism according to claim 1, it is characterized in that: luffing arm-tie (9) is terminal hinged with the jib (1) of hoisting crane.
5. described arm tower crane luffing mechanism according to claim 2, it is characterized in that: front strut (5) is a diagonal line of quadrilateral frame.
6. according to claim 1 to the described arm tower crane luffing mechanism of 5 any one, it is characterized in that: luffing arm-tie (9) length is fixed, and the angle in the whole amplitude changing process between luffing arm-tie (9) and the jib (1) is fixed.
7. arm tower crane, comprise board (2), be installed on the jib (1) on the board (2), and be installed on luffing mechanism between board (2) and the jib (1), it is characterized in that: luffing mechanism is the described luffing mechanism of claim 1 to 6 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102329112A CN103303825A (en) | 2013-06-13 | 2013-06-13 | Amplitude variation type mechanism of movable arm tower type crane and movable arm tower type crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102329112A CN103303825A (en) | 2013-06-13 | 2013-06-13 | Amplitude variation type mechanism of movable arm tower type crane and movable arm tower type crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103303825A true CN103303825A (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102329112A Pending CN103303825A (en) | 2013-06-13 | 2013-06-13 | Amplitude variation type mechanism of movable arm tower type crane and movable arm tower type crane |
Country Status (1)
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| CN (1) | CN103303825A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6062405A (en) * | 1996-04-26 | 2000-05-16 | Manitowoc Crane Group, Inc. | Hydraulic boom hoist cylinder crane |
| US6481202B1 (en) * | 1997-04-16 | 2002-11-19 | Manitowoc Crane Companies, Inc. | Hydraulic system for boom hoist cylinder crane |
| JP2003040580A (en) * | 2001-07-25 | 2003-02-13 | Hitachi Constr Mach Co Ltd | Breakage prevention device of boom working machine |
| CN201411333Y (en) * | 2009-06-11 | 2010-02-24 | 山东丰汇设备技术有限公司 | Rail mounted combined arm long luffing tower crane |
| CN102491203A (en) * | 2011-12-13 | 2012-06-13 | 三一集团有限公司 | Crane and luffing mechanism thereof |
| CN202704873U (en) * | 2012-07-10 | 2013-01-30 | 中联重科股份有限公司 | Tower crane |
| CN203306947U (en) * | 2013-06-13 | 2013-11-27 | 山东丰汇设备技术有限公司 | Luffing mechanism of luffing jib tower crane and luffing jib tower crane |
-
2013
- 2013-06-13 CN CN2013102329112A patent/CN103303825A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6062405A (en) * | 1996-04-26 | 2000-05-16 | Manitowoc Crane Group, Inc. | Hydraulic boom hoist cylinder crane |
| US6481202B1 (en) * | 1997-04-16 | 2002-11-19 | Manitowoc Crane Companies, Inc. | Hydraulic system for boom hoist cylinder crane |
| JP2003040580A (en) * | 2001-07-25 | 2003-02-13 | Hitachi Constr Mach Co Ltd | Breakage prevention device of boom working machine |
| CN201411333Y (en) * | 2009-06-11 | 2010-02-24 | 山东丰汇设备技术有限公司 | Rail mounted combined arm long luffing tower crane |
| CN102491203A (en) * | 2011-12-13 | 2012-06-13 | 三一集团有限公司 | Crane and luffing mechanism thereof |
| CN202704873U (en) * | 2012-07-10 | 2013-01-30 | 中联重科股份有限公司 | Tower crane |
| CN203306947U (en) * | 2013-06-13 | 2013-11-27 | 山东丰汇设备技术有限公司 | Luffing mechanism of luffing jib tower crane and luffing jib tower crane |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |