CN205367536U - Swing crane and jib loading boom thereof - Google Patents
Swing crane and jib loading boom thereof Download PDFInfo
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- CN205367536U CN205367536U CN201620088943.9U CN201620088943U CN205367536U CN 205367536 U CN205367536 U CN 205367536U CN 201620088943 U CN201620088943 U CN 201620088943U CN 205367536 U CN205367536 U CN 205367536U
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Abstract
The utility model discloses a swing crane's jib loading boom, including arm festival main part and arm head, the end of arm head linking arm festival main part, the connection face upper end of arm head and arm festival main part is equipped with the loading pulley, the utility model is characterized in that, the central line of arm festival main part forms the obtuse angle with the central line of arm head is crossing, and the arm head downward sloping. The utility model also discloses a swing crane, jib loading boom end -to -end connection lifting hook, the jib loading boom adopts aforesaid jib loading boom. The utility model discloses a purlin rack structure and box body type structure combine together, when lifting by crane the heavy object, can increase the spatial distance between jib loading boom self structure and the lifting hook to the volume restricted problem of solution to lifting by crane the object extends the range of application of product, promotes the applicable field of product.
Description
Technical field
This utility model relates to a kind of crane arm for swing crane, further relates to a kind of swing crane adopting this crane boom head, belongs to crane technical field.
Background technology
Crane arm is the important component part of whipping crane, it connects the A cabinet frame of crane by drag-line, it is connected with suspension hook by steel wire rope, crane operationally utilizes crane arm to sling weight, crane arm bears the deadweight of jib and its upper-part and the load effect such as lift heavy, wind load and produces moment of flexure, pressure and shearing force, and force-bearing situation is complex.
The hoisting arm structure form of existing swing crane is relatively easy, as shown in Figure 1, crane arm includes arm joint main body 1 and arm head 2, arm joint main body 1 is hinged with the counter-jib of crane or upper bracket at arm root hinge 4 place, arm head 2 connects the end of arm joint main body 1, arm head 1 has suspension hook 3 by wire rope hanging, and suspension hook 3 is used for weight of slinging.The arm joint main body 1 of known existing crane arm and the centrage of arm head 2 are on same straight line, crane arm, the horizontal line composition right angled triangle of rings center line and counter-jib, when hoisting heavy, the elevation angle of crane arm is gradually increased, then rings center line tapers into the angle of crane arm, weight and crane boom head frame body distance are gradually reduced, but after weight exceedes cargo boom root hinge, weight even collides near contacting generation friction with crane boom head framework, the volume of hoisting heavy is limited because the space length between crane boom head self structure and suspension hook is too small；And same work range and the same crane arm elevation angle, required crane arm brachium length can be longer, and corresponding section bar makes consumption increase, thus adding cost of goods manufactured and not being used in the price competitiveness of product.
In sum, jib tip structure form of the prior art limits the volume of hoisting heavy, it is unfavorable for that as big in the weight under wind-powered electricity generation occasion, volume is big, sling height height, and operation under the operating mode requiring tower body to be stand alone type (attachment can not be played), reduce the suitable application area of swing crane product, reduce the using value of product.
The purpose of this utility model is in that to change hoisting arm structure, after hoisting heavy exceedes crane arm nasion hinge, increase the space length between crane arm self structure and gib head, thus solving the volumetric constraint problem to lifting object, expand the range of application of product, the suitable application area of improving product.
Utility model content
The purpose of this utility model is in that to overcome deficiency of the prior art, it is provided that a kind of crane arm for swing crane, solves the technical problem that the weight volume of crane loading in prior art is limited.
For solving above-mentioned technical problem, this utility model be the technical scheme is that a kind of crane arm for swing crane, and including arm joint main body and arm head, arm head connects the end of arm joint main body, and the joint face upper end of arm head and arm joint main body is provided with loading pulley；It is characterized in that, the described centrage of arm joint main body and the centrage of arm head are crossed to form obtuse angle, and arm head is downward-sloping.
Further, described arm joint main body is truss structure, and including main chord and the web member between main chord, and main chord is parallel to each other.
Further, described arm head is truss structure, including arm head chord member and the arm head web member between arm head chord member, between arm head chord member spacing be gradually reduced from bottom to top formation tower-like；Described arm head chord member is divided into top boom and lower boom, and top boom length is more than lower boom length.
Further, described arm head bottom is connected with the end of arm joint main body by link.
Further, the connecting end surface of described link is corresponding with the end of arm joint main body and arm head bottom, each angle of side connecting end surface and main chord just connect, and each angle of opposite side connecting end surface just connects with top boom and lower boom, and the upper side of link is located at by loading pulley.
Further, described link and lower boom junction are provided with wedge angle lobe plate, and the firm contact of link and lower boom is positioned on wedge angle lobe plate, it is possible to make to be positioned at and the outside of the firm contact of top boom with the firm contact of lower boom.
Further, described obtuse angle selection range is 150 °～170 °.
This utility model additionally provides a kind of swing crane, including crane arm, and its end connecting shackle, it is characterized in that, described crane arm is the crane arm being previously described for swing crane.
Compared with prior art, this utility model reaches to provide the benefit that: a kind of swing crane of this utility model offer and crane arm thereof, combined with box typed structure by truss structure, when hoisting heavy, the space length between crane arm self structure and suspension hook can be increased, thus solving the volumetric constraint problem to lifting object, expand the range of application of product, the suitable application area of improving product.Same work range and the same crane arm elevation angle, required crane arm brachium length can be less, and corresponding section bar makes consumption reduce, thus decreasing the price competitiveness of cost of goods manufactured and improving product.
Accompanying drawing explanation
Fig. 1 is the structural representation of crane arm in prior art；
Fig. 2 is the structural representation of this utility model crane arm；
Fig. 3 is structural representation during this utility model boom hoist weight；
Fig. 4 is the structural representation of this utility model A place arm joint main body and arm head junction.
In figure: 1, arm joint main body；1-1, main chord；1-2, web member；2, arm head；2-1, top boom；2-2, lower boom；2-3, arm head web member；3, suspension hook；4, arm root pin joint；5 loading pulleys；6, link；7, wedge angle lobe plate.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described.Following example are only for clearly illustrating the technical solution of the utility model, and can not limit protection domain of the present utility model with this.
As in Figure 2-4, a kind of crane arm for swing crane disclosed in this utility model, including arm joint main body 1 and arm head 2, arm head 2 connects the end of arm joint main body 1, and the joint face upper end of arm head 2 and arm joint main body 1 is provided with loading pulley 5；It is characterized in that, the centrage of described arm joint main body 1 and the centrage of arm head 2 are crossed to form obtuse angle, and arm head 2 is downward-sloping.
This utility model is for the crane arm of swing crane, the centrage of centrage Yu arm head 2 by arranging arm joint main body 1 is crossed to form angle, and arm head 2 is downward-sloping, arm head 2 top connecting shackle 3, when hoisting heavy, compared with prior art, as shown in Figure 3, under the elevation angle same case of crane arm, the angle theta that the arm head 2 of suspension hook 3 centrage and crane arm is formed ' the angle theta that is far longer than in prior art to be formed, therefore weight is bigger with the distance of the arm head frame body of crane arm, increase the space length between crane arm self structure and suspension hook, after exceeding cargo boom root hinge 4 particularly in weight, excess room is had between weight and arm head frame body, thus solving the volumetric constraint problem to lifting object, expand the range of application of product, the suitable application area of improving product.
Preferably, arm joint main body 1 is truss structure, and including main chord 1-1 and the web member 1-2 between main chord 1-1, and main chord 1-1 is parallel to each other.Arm head 2 is also truss structure, as shown in Figure 4, including arm head chord member and the arm head web member 2-3 between arm head chord member, between arm head chord member spacing be gradually reduced from bottom to top formation tower-like；Described arm head chord member is divided into top boom 2-1 and lower boom 2-2, and top boom 2-1 length is more than lower boom 2-2 length.Truss structure is under load action, and truss member is primarily subjected to axial tension or pressure, it is thus possible to make full use of the intensity of material, can save material when span is bigger, alleviates deadweight and increases rigidity.
Preferably, described arm head 2 bottom is connected with the end of arm joint main body 1 by link 6.The connecting end surface of link 6 is corresponding with the end of arm joint main body 1 and arm head 2 bottom, each angle of side connecting end surface and main chord 1-1 just connect, each angle of opposite side connecting end surface and top boom 2-1 and lower boom 2-2 just connect, and the upper side of link 6 is located at by loading pulley 5.Make arm joint main body 1 and arm head 2 more be fastenedly connected by link 6, compare and be only connected with arm head chord member by main chord 1-1, it is possible to the stability making crane arm is better, and safety is higher in operating with process.
Preferably, described link 6 and lower boom 2-2 junction are provided with wedge angle lobe plate 7, and the firm contact of link 6 and lower boom 2-2 is positioned on wedge angle lobe plate 7, it is possible to make to be positioned at and the outside of the firm contact of top boom 2-1 with the firm contact of lower boom 2-2.So can make top boom 2-1 and the lower boom 2-2 uniform force of arm head 2.
Preferably, the centrage of described arm joint main body 1 and the centrage of arm head 2 are crossed to form obtuse angle and range for 90 °～180 °, the best results when choosing 150 °～170 °.
This utility model additionally provides a kind of swing crane, including crane arm, and its end connecting shackle 3, it is characterized in that, described crane arm is the crane arm being previously described for swing crane.
A kind of swing crane of this utility model offer and crane arm thereof, combined with box typed structure by truss structure, increase the space length between crane arm self structure and suspension hook, thus solving the volumetric constraint problem to lifting object, expand the range of application of product, the suitable application area of improving product.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the premise without departing from this utility model know-why; can also making some improvement and deformation, these improve and deformation also should be regarded as protection domain of the present utility model.
Claims (8)
1., for a crane arm for swing crane, including arm joint main body and arm head, arm head connects the end of arm joint main body, and the joint face upper end of arm head and arm joint main body is provided with loading pulley；It is characterized in that, the described centrage of arm joint main body and the centrage of arm head are crossed to form obtuse angle, and arm head is downward-sloping.
2. the crane arm for swing crane according to claim 1, is characterized in that, described arm joint main body is truss structure, and including main chord and the web member between main chord, and main chord is parallel to each other.
3. the crane arm for swing crane according to claim 2, it is characterized in that, described arm head is truss structure, including arm head chord member and the arm head web member between arm head chord member, between arm head chord member spacing be gradually reduced from bottom to top formation tower-like；Described arm head chord member is divided into top boom and lower boom, and top boom length is more than lower boom length.
4. the crane arm for swing crane according to claim 3, is characterized in that, described arm head bottom is connected with the end of arm joint main body by link.
5. the crane arm for swing crane according to claim 4, it is characterized in that, the connecting end surface of described link is corresponding with the end of arm joint main body and arm head bottom, each angle of side connecting end surface and main chord just connect, each angle of opposite side connecting end surface just connects with top boom and lower boom, and the upper side of link is located at by loading pulley.
6. the crane arm for swing crane according to claim 5, is characterized in that, described link and lower boom junction are provided with the firm contact of wedge angle lobe plate, link and lower boom and are positioned on wedge angle lobe plate.
7. the crane arm for swing crane according to claim 1, is characterized in that, described obtuse angle selection range is 150 ° ~ 170 °.
8. a swing crane, including crane arm, its end connecting shackle, it is characterized in that, described crane arm is the crane arm for swing crane described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088943.9U CN205367536U (en) | 2016-01-28 | 2016-01-28 | Swing crane and jib loading boom thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088943.9U CN205367536U (en) | 2016-01-28 | 2016-01-28 | Swing crane and jib loading boom thereof |
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| Publication Number | Publication Date |
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| CN205367536U true CN205367536U (en) | 2016-07-06 |
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| CN201620088943.9U Active CN205367536U (en) | 2016-01-28 | 2016-01-28 | Swing crane and jib loading boom thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023274263A1 (en) * | 2021-06-30 | 2023-01-05 | 湖南三一中型起重机械有限公司 | Multi-working-condition lattice jib head and crane |
-
2016
- 2016-01-28 CN CN201620088943.9U patent/CN205367536U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023274263A1 (en) * | 2021-06-30 | 2023-01-05 | 湖南三一中型起重机械有限公司 | Multi-working-condition lattice jib head and crane |
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