CN202575785U - Portal crane and four-connecting-rod system thereof - Google Patents
Portal crane and four-connecting-rod system thereof Download PDFInfo
- Publication number
- CN202575785U CN202575785U CN 201220160473 CN201220160473U CN202575785U CN 202575785 U CN202575785 U CN 202575785U CN 201220160473 CN201220160473 CN 201220160473 CN 201220160473 U CN201220160473 U CN 201220160473U CN 202575785 U CN202575785 U CN 202575785U
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- hinge
- jib
- pull
- point
- arm frame
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Abstract
The utility model provides a portal crane and a four-connecting-rod system thereof, wherein the four-connecting-rod system comprises a pull rod structure, an elephant nose bridge structure, an arm frame structure and a draw-off mechanism, wherein the two ends of the pull rod structure are respectively provided with a pull rod upper articulated point and a pull rod lower articulated point; one end of the elephant nose bridge structure is articulated with the pull rod upper articulated point; two ends of the arm frame structure are respectively provided with an arm frame upper articulated point and an arm frame lower articulated point; the arm frame upper articulated point is articulated with the main body part of the elephant nose bridge structure; an amplitude variation steering pulley block is arranged at the lower articulated point; the arm frame upper articulated point part is provided with a bearing pulley block; amplitude variation steel wire ropes are wound on the amplitude variation steering pulley block and the bearing pulley block; the amplitude variation steel wire ropes pull the arm frame structure and rotates by taking the arm frame lower articulated point as a base point; the arm frame upper articulated point drives the elephant nose bridge structure and moves by taking the pull rod upper articulated point as a base point; and the pull rod structure rotates taking the pull rod lower articulated point as a base point. The portal crane and the four-connecting-rod system thereof provided by the utility model are beneficial to lowering the structure complexity.
Description
Technical field
The utility model relates to a kind of high pedestal jib crane and four push and pull system thereof.
Background technology
Four traditional push and pull system high pedestal jib cranes adopt the tooth bar luffing, and are stressed in order to reduce tooth bar, adopted balanced system.Fig. 1 shows a kind of four push and pull system of the prior art, comprising: jib structure 11; End pivotally attached trunk girder construction 12 with jib structure 11; End pivotally attached Tiebar structure 13 with trunk girder construction 12; Luffing structure 14; Balanced system 15.Owing to adopted balanced system 15, so the above part-structure of rotational structure is complicated, and requires accurately to calculate four connecting rods and balanced system 15 each parts center-of-gravity position, extrapolate system balancing power, luffing power, calculation of complex.
The utility model content
The technical matters that the utility model will solve provides a kind of high pedestal jib crane and four push and pull system thereof, can reduce structure complexity.
For solving the problems of the technologies described above, the utility model provides a kind of four push and pull system, comprising:
Tiebar structure, its two ends have on the pull bar hinge under the hinge and pull bar respectively;
The trunk girder construction, hinge is hinged on one of which end and the said pull bar;
Jib structure, its two ends have on the jib hinge under the hinge and jib respectively, and the main part of hinge and said trunk girder construction is hinged on the said jib;
The hinge place is provided with luffing changed course assembly pulley under the said pull bar; The hinge place is provided with the carrying assembly pulley on the said jib; Said luffing changed course assembly pulley is wound with the luffing steel rope with carrying on the assembly pulley; Said four push and pull system also comprise draw-off mechanism; The said luffing steel rope of tractive is that basic point rotates to spur said jib structure with hinge under the said jib, and to drive said trunk girder construction be the basic point motion with hinge on the said pull bar to hinge on the said jib, and said Tiebar structure is that basic point rotates with hinge under the said pull bar.
The utility model also provides a kind of high pedestal jib crane, comprises above-mentioned each described four push and pull system.
Compared with prior art, the utlity model has following advantage:
In four push and pull system of the utility model embodiment, the hinge place is provided with luffing changed course assembly pulley under pull bar, and the hinge place is provided with the carrying assembly pulley on jib; Luffing changed course assembly pulley and carrying assembly pulley and luffing steel rope are used and replace traditional tooth bar luffing mechanism to realize the luffing function; Cancelled balanced system, structure stress is simpler, has optimized dead load; It is more steady to rotate above part-structure operation, makes that the high pedestal jib crane complete machine is more stable.
Description of drawings
Fig. 1 is the structural representation of a kind of four push and pull system in the prior art;
Fig. 2 is the structural representation of four push and pull system of the utility model embodiment.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is described further, but should limit the protection domain of the utility model with this.
Four push and pull system of present embodiment are as shown in Figure 2, comprising: jib structure 21, trunk girder construction 22, Tiebar structure 23, draw-off mechanism 24, luffing steel rope 25, luffing changed course assembly pulley 26, carrying assembly pulley 27, hoisting drum 28 and switching reel 29.
Wherein, the two ends of Tiebar structure 23 have on the pull bar hinge 232 under hinge 231 and the pull bar respectively, and hinge 231 is hinged on an end of trunk girder construction 22 and the pull bar.
The two ends of jib structure 21 have on the jib hinge 212 under hinge 211 and the jib respectively, and wherein, the point of connection on the jib on the main part of hinge 211 and trunk girder construction 22 is hinged.
Luffing changed course assembly pulley 26 is arranged on hinge 232 places under the pull bar, carries assembly pulley 27 and is arranged on hinge 211 places on the jib, and luffing steel rope 25 is walked around luffing changed course assembly pulley 26 and carried assembly pulley 27 and link to each other with draw-off mechanism 24.
24 pairs of luffing steel ropes of draw-off mechanism 25 carry out tractive; Thereby pulling jib structure 21 is that basic point rotates with hinge under the jib 212; And then hinge 212 drive trunk girder constructions 22 are the basic point motion with hinge on the pull bar 231 on the jib; Tiebar structure 23 is that basic point rotates with hinge under the pull bar 232 simultaneously, realizes the luffing function.Four push and pull system of present embodiment adopt rope luffing to replace conventional tooth bar luffing, have cancelled balanced system, and structure is simpler, moves more steady.
In the present embodiment, draw-off mechanism 24 is specially reel.In addition, jib structure 21 is stressed simple in four push and pull system of present embodiment, thereby its version can change truss structure into by traditional body structure, to alleviate the deadweight of jib structure 21.
Can also comprise hoisting drum 28 in the present embodiment, open and close, two in the reel 29 or not comprise that hoisting drum 28 can be used for lifting cargo with switching reel 29.
Present embodiment also provides a kind of high pedestal jib crane, adopts four push and pull system shown in Figure 2, owing to cancelled balanced system, structure stress is simple, thereby the complete machine of high pedestal jib crane is more stable.
Though the utility model with preferred embodiment openly as above; But it is not to be used for limiting the utility model; Any those skilled in the art are in spirit that does not break away from the utility model and scope; Can make possible change and modification, so the protection domain of the utility model should be as the criterion with the scope that the utility model claim is defined.
Claims (5)
1. push and pull system comprises:
Tiebar structure, its two ends have on the pull bar hinge under the hinge and pull bar respectively;
The trunk girder construction, hinge is hinged on one of which end and the said pull bar;
Jib structure, its two ends have on the jib hinge under the hinge and jib respectively, and the main part of hinge and said trunk girder construction is hinged on the said jib;
It is characterized in that,
The hinge place is provided with luffing changed course assembly pulley under the said pull bar; The hinge place is provided with the carrying assembly pulley on the said jib; Said luffing changed course assembly pulley is wound with the luffing steel rope with carrying on the assembly pulley; Said four push and pull system also comprise draw-off mechanism; The said luffing steel rope of tractive is that basic point rotates to spur said jib structure with hinge under the said jib, and to drive said trunk girder construction be the basic point motion with hinge on the said pull bar to hinge on the said jib, and said Tiebar structure is that basic point rotates with hinge under the said pull bar.
2. four push and pull system according to claim 1 is characterized in that, said draw-off mechanism is a reel.
3. four push and pull system according to claim 1 is characterized in that, also comprise the hoisting drum that is used for lifting cargo and/or open and close reel.
4. four push and pull system according to claim 1 is characterized in that, the version of said jib structure is truss-like.
5. a high pedestal jib crane is characterized in that, comprises each described four push and pull system in the claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220160473 CN202575785U (en) | 2012-04-16 | 2012-04-16 | Portal crane and four-connecting-rod system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220160473 CN202575785U (en) | 2012-04-16 | 2012-04-16 | Portal crane and four-connecting-rod system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202575785U true CN202575785U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220160473 Withdrawn - After Issue CN202575785U (en) | 2012-04-16 | 2012-04-16 | Portal crane and four-connecting-rod system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202575785U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103287996A (en) * | 2012-04-16 | 2013-09-11 | 上海振华重工(集团)股份有限公司 | Portal crane and four-bar linkage system thereof |
| CN103303796A (en) * | 2013-07-08 | 2013-09-18 | 北京中船信息科技有限公司 | Gantry crane attitude monitoring system and method based on beidou satellite positioning system |
| CN103332596A (en) * | 2013-07-08 | 2013-10-02 | 北京中船信息科技有限公司 | GPS-based gantry crane attitude monitoring system and method thereof |
| CN104609319A (en) * | 2015-02-10 | 2015-05-13 | 青岛海西重机有限责任公司 | Method for repairing all hinged points of gantry crane and four-rod mechanism |
-
2012
- 2012-04-16 CN CN 201220160473 patent/CN202575785U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103287996A (en) * | 2012-04-16 | 2013-09-11 | 上海振华重工(集团)股份有限公司 | Portal crane and four-bar linkage system thereof |
| CN103303796A (en) * | 2013-07-08 | 2013-09-18 | 北京中船信息科技有限公司 | Gantry crane attitude monitoring system and method based on beidou satellite positioning system |
| CN103332596A (en) * | 2013-07-08 | 2013-10-02 | 北京中船信息科技有限公司 | GPS-based gantry crane attitude monitoring system and method thereof |
| CN103303796B (en) * | 2013-07-08 | 2015-01-14 | 北京中船信息科技有限公司 | Gantry crane attitude monitoring system and method based on beidou satellite positioning system |
| CN103332596B (en) * | 2013-07-08 | 2015-05-27 | 北京中船信息科技有限公司 | Method for GPS-based gantry crane attitude monitoring system |
| CN104609319A (en) * | 2015-02-10 | 2015-05-13 | 青岛海西重机有限责任公司 | Method for repairing all hinged points of gantry crane and four-rod mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20141105 |
|
| RGAV | Abandon patent right to avoid regrant |