CN2233923Y - Four-lever type combined jib frame jibbing mechanism - Google Patents
Four-lever type combined jib frame jibbing mechanism Download PDFInfo
- Publication number
- CN2233923Y CN2233923Y CN 94225508 CN94225508U CN2233923Y CN 2233923 Y CN2233923 Y CN 2233923Y CN 94225508 CN94225508 CN 94225508 CN 94225508 U CN94225508 U CN 94225508U CN 2233923 Y CN2233923 Y CN 2233923Y
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- CN
- China
- Prior art keywords
- guide rail
- frame
- pull bar
- utility
- bar
- 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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Abstract
The utility model relates to a four-lever type combined jib frame derricking mechanism with draw rods and guide rails, belonging to a component for a crane used for loading and unloading operation. The utility model is characterized in that the mechanism is composed of a draw rod, a main arm frame and a jib frame which are hinged together, the lower fulcrum of the main arm frame is also is hinged, and the lower fulcrum and the middle fulcrum of the draw rod are respectively provided with guide rollers rolling along curved guide rails. The utility model has the advantages that the track of the end point of the jib frame can keep absolute level in the process of amplitude in theory, general arrangement is easy in practical design, the size selecting range of rods is wide, design can be simplified, self-weight and cost can be reduced, productivity is increased, etc.
Description
A kind of pull bar guide rail four-bar combination jib luffing mechanism belongs to the hoisting crane technical field, is mainly used in loading and unloading operation.
Hoisting crane in order to reduce the driving power of luffing mechanism, requires goods to move along horizon when carrying out loading and unloading operation.The combination boom system is exactly wherein a kind of compensating device.The combination boom system that adopts has three kinds of patterns at present: 1. straight line trunk frame pull bar makes up boom system.During luffing, its trunk frame end locus of points is the part of double leaf curve.Only in effective breadth, its track is near horizontal linear.2. curve trunk frame drag-line makes up boom system.Its torsional property is poor, and work speed is lower.3. double link jib in parallelogram system.General layout is restricted, and machine gravity is higher.
The utility model purpose is to overcome the shortcoming in the above-mentioned prior art, and a kind of simple and easy to do compensation mechanism is provided.When this mechanism can make hoisting crane carry out loading and unloading operation, can guarantee that theoretically trunk frame end point moves along horizon, and general layout is easy, design simplification, easily manufactured, the boom system torsional property improves simultaneously, thereby can improve rotative speed, and then enhance productivity.
Pull bar guide rail four-bar combination jib luffing mechanism described in the utility model, constitute by principal arm frame [1], pull bar [2] and trunk frame [3], it is characterized in that above-mentioned principal arm frame [1], pull bar [2] and trunk frame [3] are each other for hinged, and also be hinged between principal arm frame [1] lower fulcrum O and the frame, pull bar [2] lower fulcrum O
1Being equipped with can be along the guide roller [7] of guide rail [8] rolling, pull bar [2] intermediate support O
2Also being equipped with can be along the guide roller of guide rail [5] rolling.
Above-mentioned guide rail [5] and [8] are curve, and also wherein a guide rail is a straight line.
Above-mentioned guide rail [5] and [8], when the end points that only needs trunk frame [3] was similar to away horizon, these two guide rails [5] and [8] all can be straight line.
Above-mentioned guide rail [5] and [8] are and direction is installed on two rail bracketses that are connected as a single entity with the hoisting crane Shears on the contrary.
The utility model has the advantages that: the track of trunk frame end point in amplitude changing process can guarantee abswolute level theoretically; In actual design, each rod member size Selection scope is big, and the shape of curvilinear guide changes with the different of position of the fulcrum with rod member length is different; The general layout of complete machine is easy; Owing to increase a rolling bearing in the middle of the pull bar, and roller structure can bear transverse force again, thereby improved the force-bearing situation of boom system; Improve the rigidity of boom system, can make hoisting crane select higher luffing speed and rotative speed, thereby improved the loading and unloading capacity rating, reduced operating cost.
Accompanying drawing 1 is one of the utility model most preferred embodiment integral structure scheme drawing.
Accompanying drawing 2 is pull bar guide rail four-bar combination jib luffing mechanism scheme of installations on span winch.
1 principal arm frame among the figure, 2 pull bars, 3 trunk framves, 4 Shearves, 5 and 8 are curvilinear guide, and 6 and 7 are roller, 9 luffing driver trains, 11 portal gantries, 12 columns, 13 rotation platforms.
In conjunction with the accompanying drawings with most preferred embodiment with architectural feature of the present utility model, especially the installation of this luffing mechanism on hoisting crane is summarized as follows: with 10 tons of harbor portal cranes is example, the scantling of structure of former luffing mechanism is: long 24 meters of principal arm frame, long 22.4 meters of pull bar, long 13.5 meters of trunk frame.30 meters of amplitude peaks, 8.5 meters of minimum radiuses.After adopting pull bar guide rail four-bar combination jib luffing mechanism, 24 meters of principal arm frame 1 length, 18 meters of pull bar 2 length reduce 4.4 meters.13.5 meters of trunk frame 3 length.3.5 meters of lower curve guide rail 8 length, 4 meters of intermediate curve guide rail 5 length.Amplitude peak is 30 meters, and minimum radius is 8 meters, reduces 0.5 meter.As shown in Figure 2: the turntable 13 of band column 12 is housed on portal gantry 11, and driver's cab, machine room and Shears then are fixed on the turntable; The hinged point in principal arm frame 1 lower end is fixed on turntable 13 front ends; The following hinge of pull bar 2 moves along guide rail 8 with roller 7; The roller 6 of pull bar 2 intermediate supports is hinged with luffing driver train 9, and can move along guide rail 5, and guide rail 5 and guide rail 8 all are fixed on the Shears 4.
Claims (4)
1, a kind of pull bar guide rail four-bar combination jib luffing mechanism, constitute by principal arm frame [1], pull bar [2] and trunk frame [3], above-mentioned principal arm frame [1], pull bar [2] and the trunk frame [3] of being characterised in that of the present utility model is each other for hinged, and also be hinged between principal arm frame [1] lower fulcrum O and the frame, pull bar [2] lower fulcrum O
1Being equipped with can be along the guide roller [7] of guide rail [8] rolling, pull bar [2] intermediate support O
2Also being equipped with can be along the guide roller [6] of guide rail [5] rolling.
2, pull bar guide rail four-bar combination jib luffing mechanism according to claim 1 is characterized in that above-mentioned guide rail [5] and [8] are curve, and also wherein a guide rail is a straight line.
3, according to claim 1 and 2 described pull bar guide rail four-bar combination jib luffing mechanisms, it is characterized in that above-mentioned guide rail [5] and [8], when the end points that only needs trunk frame [3] was similar to away horizon, these two guide rails [5] and [8] all can be straight line.
4, according to claim 1 and 2 described pull bar guide rail four-bar combination jib luffing mechanisms, it is characterized in that above-mentioned guide rail [5] and [8], be inclination and direction and be installed on the contrary on two rail bracketses that are connected as a single entity with the hoisting crane Shears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225508 CN2233923Y (en) | 1994-01-03 | 1994-01-03 | Four-lever type combined jib frame jibbing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225508 CN2233923Y (en) | 1994-01-03 | 1994-01-03 | Four-lever type combined jib frame jibbing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2233923Y true CN2233923Y (en) | 1996-08-28 |
Family
ID=33838685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94225508 Expired - Fee Related CN2233923Y (en) | 1994-01-03 | 1994-01-03 | Four-lever type combined jib frame jibbing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2233923Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317195A (en) * | 2009-02-11 | 2012-01-11 | V&M德国有限公司 | Be used for lashing and reinforce the pull bar of jib boom |
| CN113336135A (en) * | 2021-03-22 | 2021-09-03 | 上海亿锤机械科技有限公司 | But vertical lift telescopic boom fork truck |
-
1994
- 1994-01-03 CN CN 94225508 patent/CN2233923Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317195A (en) * | 2009-02-11 | 2012-01-11 | V&M德国有限公司 | Be used for lashing and reinforce the pull bar of jib boom |
| CN102317195B (en) * | 2009-02-11 | 2013-07-31 | V&M德国有限公司 | Traction rod for bracing a crane jib |
| CN113336135A (en) * | 2021-03-22 | 2021-09-03 | 上海亿锤机械科技有限公司 | But vertical lift telescopic boom fork truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |