CN202643183U - Combined type multi-segment rod amplitude-varying system - Google Patents
Combined type multi-segment rod amplitude-varying system Download PDFInfo
- Publication number
- CN202643183U CN202643183U CN 201220194283 CN201220194283U CN202643183U CN 202643183 U CN202643183 U CN 202643183U CN 201220194283 CN201220194283 CN 201220194283 CN 201220194283 U CN201220194283 U CN 201220194283U CN 202643183 U CN202643183 U CN 202643183U
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- amplitude
- varying
- attaching parts
- bearing pin
- bar
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Abstract
The utility model provides a combined type multi-segment rod amplitude-varying system. Connecting rods are connected through pin shafts, length and angle can be adjusted according to different lengths and types of arm supports, one end of a big connecting part is connected with a base seat which is fixed on the upper portion of a hoisting arm support through the pin shaft, the other end of the big connecting part is connected with a short cross rod and an upper small connecting part which is connected with pulling plates through wear plates arranged on two sides, the adjacent pulling plates are connected through the wear plates, and then the pulling plates are connected to a lower small connecting part which is connected with a long cross rod and a triangle plate, the other end of the triangle plate is connected with an anchor block, an amplitude-varying steel strand or an amplitude-varying steel wire rope is fixed on the anchor block, the operation of the amplitude-varying system is driven through an amplitude-varying hydraulic cylinder or an amplitude-varying winding drum, and hoisting arm support stable amplitude variation is achieved. The combined type multi-segment rod amplitude-varying system is simple and reasonable in structure, convenient to process and manufacture, low in cost and suitable for amplitude variation of a large-scale arm support structure with a wide end down, and meanwhile imbalanced amplitude-varying force caused by additive factors such as wind load can be balanced, and accordingly stability and safety of hoist arm support amplitude variation can be guaranteed.
Description
Technical field
The utility model belongs to technical field of engineering machinery, relates to a kind of changing-breadth system of arm derrick crane, specifically a kind of compound type multistage bar changing-breadth system.
Background technology
Changing-breadth system is the important component part of arm derrick crane, plays a part very important in the working process of hoisting crane.Traditional elevator boom rack changing-breadth system is to adopt variable-amplitude steel wire rope to reel by assembly pulley to be connected to amplitude-changing drum realization luffing, but owing to reason is installed, probably occurs the phenomenon that a length of side is lacked on one side, causes certain potential safety hazard for the safety in production operation.In addition on the one hand, the compound type jib of both arms shelf structure is applied at some goliaths, and traditional luffing mode is also inapplicable, although the luffing mechanism of four link type is also arranged, but its luffing action is stable very poor, is subject to easily the additional factor interference such as wind carries.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and cleverly compound type multistage bar changing-breadth system of a kind of structure is provided.This compound type multistage bar changing-breadth system one is the combination by long and short cross bar, change " wide luffing " into by " narrow luffing ", improved the stability of luffing, the 2nd, by intermal force and the proportionality action of jointed connecting rod, guarantee the load equalization of pull bar and steel strand or steel rope during normal operation; The lateral loading effects such as wind-engaging carries, when jib lateral deformation and bearing pin joint gap were little, this system manager's opinion was analyzed and actual service test, can guarantee equally the load equalization of pull bar and steel strand or steel rope, and then realizes the safe luffing of crane arm support.
The utility model is achieved through the following technical solutions, whole compound type multistage bar changing-breadth system mainly comprises the main body that is closed trapezium structure, two large attaching partss and two pull devices, each junction all connects by bearing pin, the main body of described trapezium structure is by at the hyphen bar on horizontal upper strata, consist of at the long transverse lever of horizontal lower floor and two junctional complexs between the levels cross bar, and described two junctional complexs, two large attaching partss and two pull devices all are symmetric with respect to trapezoidal axis.Described junctional complex is connected in series successively by the little attaching parts of the little attaching parts on top, some cheater plate, some arm-ties, bottom and forms, between its medium and small attaching parts and the arm-tie and all be that cheater plate by both sides realizes being connected between the adjacent arm-tie.Described each large attaching parts one end is connected with the pedestal that is fixed on elevator boom rack top by bearing pin, and the other end is connected with the little attaching parts on hyphen bar, top by bearing pin simultaneously.Described each pull device comprises set square and two anchor blocks, and two anchor blocks are bonded to respectively the place, two base angles of the bottom of set square, and the top corner part of described set square links together by little attaching parts, the long transverse lever of bearing pin while with the bottom.In the compound type multistage bar changing-breadth system, be fixed with luffing steel strand or steel rope on the described anchor block, in order to be connected to luffing hydraulic actuating cylinder or reel, drive the changing-breadth system action by luffing hydraulic actuating cylinder or amplitude-changing drum, realize the steady luffing of elevator boom rack.
The utility model can be according to the length of large-scale jib and the quantity of height adjustment arm-tie and cheater plate, all is connected by bearing pin between hyphen bar, long transverse lever and the little attaching parts, plays the effect of supporting changing-breadth system.
The utility model is converted into " wide luffing " by the supporting role of hyphen bar and long transverse lever with " narrow luffing ", has improved the stability of large-scale combined elevator boom rack luffing.
The utility model can guarantee the load equalization of pull bar and steel strand or steel rope by the intermal force of jointed connecting rod and the proportionality action of set square during normal operation; The lateral loading effects such as wind-engaging carries, when jib lateral deformation and bearing pin joint gap were little, this system manager's opinion was analyzed and actual service test, can guarantee equally the load equalization of pull bar and steel strand or steel rope, and then realizes the safe luffing of crane arm support.
As further improvement of the utility model, described changing-breadth system also comprises the pedestal that is fixed on jib top, and large attaching parts is connected by bearing pin with pedestal, and so large attaching parts can rotate according to the luffing range of cantilever support angle.
The utility model structure is ingenious reasonable, practical, its compared with prior art, advantage is:
1. by hyphen bar and long transverse lever are set, become " narrow luffing " and be " wide luffing ", the width of the changing-breadth system of elevator boom rack is increased, stability and safety are better.
2. by intermal force and the proportionality action of jointed connecting rod, guarantee the load equalization of pull bar and steel strand or steel rope during normal operation; The lateral loading effects such as wind-engaging carries, when jib lateral deformation and bearing pin joint gap were little, this system manager's opinion was analyzed and actual service test, can guarantee equally the load equalization of pull bar and steel strand or steel rope, and then realizes the safe luffing of crane arm support.
3. simple and reasonable for structure, processing and fabricating is convenient, and effect is remarkable, and cost is also lower.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 part 1: the little attaching parts in top, hyphen bar and large attaching parts junction scheme drawing.
Fig. 3 is Fig. 1 part 2: set square, long transverse lever and bottom little attaching parts junction scheme drawing.
Number in the figure: 1 is large attaching parts, and 2 is the hyphen bar, and 3 is little attaching parts, and 4 is cheater plate, and 5 is arm-tie, and 6 is long transverse lever, and 7 is set square, and 8 is anchor block, and 9 is luffing steel strand or steel rope.
The specific embodiment
Below in conjunction with accompanying drawing technical solutions of the utility model are described further.
Such as Fig. 1, Fig. 2, shown in Figure 3: whole compound type multistage bar changing-breadth system mainly comprises the main body that is closed trapezium structure, two large attaching partss 1 and two pull devices, each junction all connects by bearing pin, the main body of described trapezium structure is by at the hyphen bar 2 on horizontal upper strata, consist of at the long transverse lever 6 of horizontal lower floor and two junctional complexs between the levels cross bar, and described two junctional complexs, two large attaching partss and two pull devices all are symmetric with respect to trapezoidal axis.
Described junctional complex is connected in series successively by the little attaching parts 3 of the little attaching parts 3 on top, some cheater plate 4, some arm-ties 5, bottom and forms, between its medium and small attaching parts and the arm-tie and all be that cheater plate by both sides realizes being connected between the adjacent arm-tie.
Described each large attaching parts 1 one end are connected with the pedestal (not shown) that is fixed on elevator boom rack top by bearing pin, and the other end is connected with the little attaching parts on hyphen bar, top by bearing pin simultaneously.
Described each pull device comprises that set square 7 and 8, two anchor blocks of two anchor blocks are bonded to respectively the place, two base angles of the bottom of set square, and the top corner part of described set square links together by little attaching parts, the long transverse lever of bearing pin while with the bottom.
In the compound type multistage bar changing-breadth system, be fixed with luffing steel strand or steel rope 9 on the described anchor block, in order to be connected to luffing hydraulic actuating cylinder or reel (not shown), drive the changing-breadth system action by luffing hydraulic actuating cylinder or amplitude-changing drum, realize the steady luffing of elevator boom rack.
Claims (1)
1. compound type multistage bar changing-breadth system, it is characterized in that, whole compound type multistage bar changing-breadth system mainly comprises the main body that is closed trapezium structure, two large attaching partss and two pull devices, each junction all connects by bearing pin, the main body of described trapezium structure is by at the hyphen bar on horizontal upper strata, consist of at the long transverse lever of horizontal lower floor and two junctional complexs between the levels cross bar, and described two junctional complexs, two large attaching partss and two pull devices all are symmetric with respect to trapezoidal axis;
Described junctional complex is connected in series successively by the little attaching parts of the little attaching parts on top, some cheater plate, some arm-ties, bottom and forms, between its medium and small attaching parts and the arm-tie and all be that cheater plate by both sides realizes being connected between the adjacent arm-tie;
Described each large attaching parts one end is connected with the pedestal that is fixed on elevator boom rack top by bearing pin, and the other end is connected with the little attaching parts on hyphen bar, top by bearing pin simultaneously;
Described each pull device comprises set square and two anchor blocks, and two anchor blocks are bonded to respectively the place, two base angles of the bottom of set square, and the top corner part of described set square links together by little attaching parts, the long transverse lever of bearing pin while with the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220194283 CN202643183U (en) | 2012-05-03 | 2012-05-03 | Combined type multi-segment rod amplitude-varying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220194283 CN202643183U (en) | 2012-05-03 | 2012-05-03 | Combined type multi-segment rod amplitude-varying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202643183U true CN202643183U (en) | 2013-01-02 |
Family
ID=47412320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220194283 Expired - Fee Related CN202643183U (en) | 2012-05-03 | 2012-05-03 | Combined type multi-segment rod amplitude-varying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202643183U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787688A (en) * | 2014-01-21 | 2015-07-22 | 武汉船用机械有限责任公司 | Diagonal connection apparatus |
-
2012
- 2012-05-03 CN CN 201220194283 patent/CN202643183U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787688A (en) * | 2014-01-21 | 2015-07-22 | 武汉船用机械有限责任公司 | Diagonal connection apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150503 |
|
| EXPY | Termination of patent right or utility model |