CN203306947U - Luffing mechanism of luffing jib tower crane and luffing jib tower crane - Google Patents
Luffing mechanism of luffing jib tower crane and luffing jib tower crane Download PDFInfo
- Publication number
- CN203306947U CN203306947U CN2013203366754U CN201320336675U CN203306947U CN 203306947 U CN203306947 U CN 203306947U CN 2013203366754 U CN2013203366754 U CN 2013203366754U CN 201320336675 U CN201320336675 U CN 201320336675U CN 203306947 U CN203306947 U CN 203306947U
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- luffing
- arm
- tie
- tower crane
- jib
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Abstract
The utility model relates to a luffing mechanism of a luffing jib tower crane and a luffing jib tower crane. According to the utility model, the axial force of a boom can be effectively reduced in a luffing process and the whole luffing mechanism can be simplified. The luffing mechanism of the luffing jib tower crane comprises a luffing pull plate, wherein the tail end of the luffing pull plate is articulated to the boom of the crane; a luffing oil cylinder is arranged between the luffing pull plate and a stand of the crane; the luffing pull plate is capable of swinging under the action of the luffing oil cylinder; the luffing pull plate, the boom of the crane, the stand of the crane and the luffing oil cylinder form a quadrilateral frame structure. The luffing jib tower crane comprises the stand, the boom mounted on the stand, and the luffing mechanism mounted between the stand and the boom, wherein the luffing mechanism is the luffing mechanism provided by the utility model.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of arm tower crane luffing mechanism.The utility model also 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, on Shears, the relative complete machine in luffing fixed pulley locus fixedly causes, and 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.
The utility model content
The utility model purpose has been to provide a kind of arm tower crane luffing mechanism, can realize in amplitude changing process effectively reducing jib axle power and simplifying whole luffing mechanism.
Another purpose of the present utility model is to provide a kind of arm tower crane that comprises above-mentioned arm tower crane luffing mechanism.
To achieve these goals, the technical solution adopted in the utility model 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, between the board of luffing arm-tie and hoisting crane, be provided with amplitude oil cylinder, 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 form 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 whole amplitude changing process between luffing arm-tie and jib is fixed.
The utility model also provides a kind of arm tower crane, comprises board, is installed on the jib on board, and be installed on the luffing mechanism between board and jib, and luffing mechanism is above-mentioned luffing mechanism.
The utility model principle of work:
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 amplitude oil cylinder in whole amplitude changing process be subjected to all the time pulling force, and the angle of luffing arm-tie and jib remains unchanged simultaneously, thereby effectively reduces significantly jib axle power.
The utility model beneficial effect:
The utility model can be realized in arm tower crane luffing operation process, reduces jib axle power, simplifies simultaneously luffing mechanism, reduces the complete machine cost.
The accompanying drawing explanation
Fig. 1 is structural representation front elevation of the present utility model.
In 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
Referring now to Figure of description, illustrate selected embodiment of the present utility model, the following explanation of embodiment of the present utility model is only exemplary, is not in order to limit scheme of the present utility model.
With reference to accompanying drawing 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, between the board 2 of luffing arm-tie 9 and hoisting crane, be provided with amplitude oil cylinder 7, 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 form 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 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 hinged with jib 1 end of hoisting crane.
In the present embodiment, luffing arm-tie 9 length are fixed, and the angle in whole amplitude changing process between luffing arm-tie 9 and 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, 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, be connected by the second bearing pin 8, the lower link point of amplitude oil cylinder 7 is connected by the first bearing pin 4 with the board 2 at hoisting crane, and front strut 5 upper link points are connected by the 4th bearing pin 6 with the board 2 at hoisting crane.
In the present embodiment, also has Shears 3.
A kind of arm tower crane, comprise board 2, be installed on the jib 1 on board 2, and be installed on the luffing mechanism between board 2 and 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 in whole amplitude changing process, amplitude oil cylinder 7 is subjected to pulling force all the time.
Groundwork of the present utility model and advantage have more than been described.The utility model is not restricted to the described embodiments, and in the prerequisite that does not break away from the utility model scope, those skilled in the art can do many changes and improvements as required.The utility model protection domain 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, between the board (2) of luffing arm-tie (9) and hoisting crane, be provided with amplitude oil cylinder (7), 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) form the quadrilateral frame shelf structure.
2. arm tower crane luffing mechanism according to claim 1 is characterized in that: also include front strut (5), it is upper that front strut (5) one ends are articulated in the board (2) of hoisting crane, and its other end is articulated on luffing arm-tie (9).
3. arm tower crane luffing mechanism according to claim 1 is characterized in that: it is upper 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. arm tower crane luffing mechanism according to claim 1, it is characterized in that: luffing arm-tie (9) is hinged with jib (1) end of hoisting crane.
5. 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 the described arm tower crane luffing mechanism of claim 1 to 5 any one, it is characterized in that: luffing arm-tie (9) length is fixed, and the angle in whole amplitude changing process between luffing arm-tie (9) and jib (1) is fixed.
7. arm tower crane, comprise board (2), be installed on the jib (1) on board (2), and be installed on the luffing mechanism between board (2) and 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 |
|---|---|---|---|
| CN2013203366754U CN203306947U (en) | 2013-06-13 | 2013-06-13 | Luffing mechanism of luffing jib tower crane and luffing jib tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203366754U CN203306947U (en) | 2013-06-13 | 2013-06-13 | Luffing mechanism of luffing jib tower crane and luffing jib tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203306947U true CN203306947U (en) | 2013-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203366754U Expired - Lifetime CN203306947U (en) | 2013-06-13 | 2013-06-13 | Luffing mechanism of luffing jib tower crane and luffing jib tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203306947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303825A (en) * | 2013-06-13 | 2013-09-18 | 山东丰汇设备技术有限公司 | Amplitude variation type mechanism of movable arm tower type crane and movable arm tower type crane |
-
2013
- 2013-06-13 CN CN2013203366754U patent/CN203306947U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303825A (en) * | 2013-06-13 | 2013-09-18 | 山东丰汇设备技术有限公司 | Amplitude variation type mechanism of movable arm tower type crane and movable arm tower type crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |