CN218320443U - Crane boom and crane - Google Patents
Crane boom and crane Download PDFInfo
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- CN218320443U CN218320443U CN202122764439.XU CN202122764439U CN218320443U CN 218320443 U CN218320443 U CN 218320443U CN 202122764439 U CN202122764439 U CN 202122764439U CN 218320443 U CN218320443 U CN 218320443U
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Abstract
The utility model provides a crane boom and a crane, wherein the boom comprises a plurality of pin shafts, a multi-section bottom transition section, a uniform-section variable pin section and one or more sections top transition sections which are provided with boom main chords and are sequentially connected in front and back, and each boom main chord is provided with a joint matched with the pin shaft; the size of the cross section of the bottom end of each section of the bottom transition section is smaller than that of the cross section of the top end; the size of the top cross section of the front section of the bottom transition section is smaller than that of the bottom cross section of the rear section of the bottom transition section; the size of the cross section of the bottom end of each top transition section is larger than that of the cross section of the top end; the size of the top cross section of the front section top transition section is larger than that of the bottom cross section of the rear section top transition section; the outer diameter of the main chord of the front section of the arm support is larger than that of the main chord of the rear section of the arm support; the size of the pin shaft at the front section is larger than that of the pin shaft at the rear section. The utility model discloses can further lightweight crane boom, reduce manufacturing cost.
Description
Technical Field
The utility model relates to a crane jib and hoist belongs to crane jib technical field.
Background
With the rapid development of international energy and chemical engineering construction, the requirements for modularization, maximization and integrated hoisting in the engineering construction are continuously improved, and particularly high requirements are provided for the hoisting capacity and the hoisting moment of hoisting equipment. The arm support system of the hoisting equipment is used as a main bearing part, and the service performance and the hoisting performance of the whole machine are directly influenced by the characteristics of the structural form, the bearing capacity and the like of the arm support.
In terms of stress, the arm support belongs to a bidirectional bending component, namely, when the hoisting equipment is in hoisting operation, the arm support bears the action of axial force and bending moment in an amplitude variation plane and a rotation plane. The variable amplitude plane is a plane determined by the arm support and the variable amplitude pulling plate, and the arm support is used as a mechanical model with two simply-supported ends for analysis in the variable amplitude plane; the rotation plane is a plane parallel to the ground and perpendicular to the amplitude variation plane, and in the rotation plane, the arm support is used as a mechanical model with one fixed end and one free end for analysis. Therefore, from the analysis of the boom cross section, not only is a sufficient sectional area required to ensure the strength of the boom cross section so as to resist the action of the axial force, but also sufficient cross section width and height are required to ensure the inertia moment in two planes so as to improve the bending resistance.
Therefore, the bearing capacity of the arm support can be improved by increasing the specification of the main chord and the section size of the arm support, but the weight of the arm support is increased, and the manufacturing cost is too high. Therefore, a person skilled in the art should adopt different reinforcement methods for the arm supports at different positions, so that on the premise of ensuring the performance of the arm support, the arm support is designed to be lighter and has better economy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough among the prior art, provide a crane jib and hoist, can further lightweight crane jib.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
on the one hand, the utility model provides a crane boom, which comprises a boom body; the arm support body comprises a plurality of pin shafts, a multi-section bottom transition section, a uniform-section variable pin section and one or more sections of top transition sections;
each section of bottom transition section, each section of uniform-section variable pin section and each section of top transition section comprise an arm support main chord member, and each section of arm support main chord member is provided with a joint matched with the pin shaft;
the joints are sleeved one by one through pin shafts, and each bottom transition section, each uniform-section variable pin section and each top transition section are sequentially connected in front and back;
the size of the cross section of the bottom end of each section of the bottom transition section is smaller than that of the cross section of the top end; the size of the top cross section of the front section of the bottom transition section is smaller than that of the bottom cross section of the rear section of the bottom transition section;
the size of the cross section of the bottom end of each top transition section is larger than that of the cross section of the top end; the size of the top cross section of the front section of top transition section is larger than that of the bottom cross section of the rear section of top transition section;
the outer diameter of the main chord of the front section of the arm support is larger than that of the main chord of the rear section of the arm support;
the size of the pin shaft at the front section is larger than that of the pin shaft at the rear section.
Further, each pin shaft is arranged in an arc shape.
Further, the number of the bottom transition sections is 2.
Further, the arm support body comprises a bottom section arm; the bottom end of the bottom section arm is connected to a crane; the top end of the bottom section arm is connected with a bottom transition section.
Further, the arm support body comprises a top knuckle arm; the bottom end of the top knuckle arm is connected with a top transition knuckle; the top end of the top knuckle arm is freely arranged.
Further, the cross section of the arm support body is rectangular.
On the other hand, the utility model provides a crane, including foretell crane jib.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
the utility model realizes the change of the cross section of the arm support bottom section arm to the top section arm for many times by arranging the bottom transition section and the top transition section with different sizes of the cross sections at the bottom end and the top end, namely the change of the size of the cross section of the arm support from small to large and from large to small, thereby not only enhancing the bearing performance of the arm support, but also saving the cost as much as possible and reducing the weight increase of the arm support as much as possible;
the utility model discloses a set up the cantilever crane main chord member of different external diameters, realize reducing cantilever crane base node arm to the size of the cantilever crane main chord member of top node arm in proper order, can enough guarantee cantilever crane bearing performance, can also make the cantilever crane lightweight furthest to improve the economic nature of cantilever crane.
Drawings
Fig. 1 is a front view of a crane boom according to an embodiment of the present invention;
FIG. 2 is a front view of the structure of an embodiment of the constant cross section variable pin joint of the present invention;
fig. 3 is a front view of the front and rear connection of the crane boom according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of an embodiment of the boom main chord of the present invention;
in the figure: 1. a boom body; 11. a bottom knuckle arm; 13. a bottom transition section; 14. a variable pin joint with a uniform cross section; 15. a top transition section; 16. a top knuckle arm; 21. a pin shaft; 121. A boom main chord; 132. And (4) a joint.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1
In order to reduce the weight and the manufacturing cost of the crane boom, referring to fig. 1, the embodiment provides a crane boom, which includes a boom body 1; the arm support body 1 comprises a plurality of pin shafts 21, a multi-section bottom transition section 13, an equal-section variable pin section 14 and one or more sections of top transition sections 15; each section of bottom transition section 13, each section of uniform-section variable pin section 14 and each section of top transition section 15 comprise arm support main chords 121, and each section of arm support main chord 121 is provided with a joint 132 matched with the pin shaft 21; the pin shafts 21 are sleeved on the joints 132 one by one, and each bottom transition joint 13, each uniform-section variable pin joint 14 and each top transition joint 15 are sequentially connected in front and back.
The size of the cross section of the bottom end of each section of the bottom transition section 13 is smaller than that of the cross section of the top end; the size of the top cross section of the front section of the bottom transition section is smaller than that of the bottom cross section of the rear section of the bottom transition section; the cross section size of the bottom end of each top transition section 15 is larger than that of the top end; the size of the top cross section of the front section of top transition section is larger than that of the bottom cross section of the rear section of top transition section; the outer diameter of the front section of the main chord 121 is larger than that of the rear section of the main chord of the arm support; the size of the front section of pin shaft 21 is larger than that of the rear section of pin shaft.
In the application of the embodiment, referring to fig. 1, each bottom transition section 13, each equal-section variable pin section 14, and each top transition section 15 are all hexahedrons, and each transition section includes 4 arm support main chords 121, and each arm support main chord 121 is provided with a joint 132; the 4 arm support main chords 121 of the bottom transition section 13 are respectively arranged on the 4 long sides of the bottom transition section 13, and meanwhile, the 4 pin shafts 21 sleeved on the joints 132 of the 4 arm support main chords are the same in size; 4 arm support main chords 121 of the uniform-section variable pin joint 14 are respectively arranged on 4 long sides of the uniform-section variable pin joint 14, and meanwhile, 4 pin shafts 21 sleeved on joints 132 of the 4 arm support main chords are the same in size and smaller than the size of the pin shafts 21 sleeved on the joints 132 of the arm support main chords 121 of the bottom transition joint 13; the 4 boom main chords 121 of the top transition section 15 are respectively arranged on the 4 long sides of the top transition section 15, and meanwhile, the sizes of the 4 pin shafts 21 sleeved on the joints 132 of the 4 boom main chords are the same and smaller than the size of the pin shaft 21 sleeved on the joint 132 of the boom main chord 121 of the uniform-section variable-pin section 14.
The utility model realizes the change of the cross section size of the arm support body 1 from small to large and then from large to small by arranging the bottom transition section 13 and the top transition section 15 with different cross section sizes at the bottom end and the top end; the stepped decrease of the sizes of the main boom chords of the boom body 1 is realized by arranging the main boom chords of the boom with different diameters; the size change of the corresponding boom main chord member is matched by arranging the pin shafts 21 with different sizes; the arm support bearing performance can be guaranteed, and the arm support can be lightened to the greatest extent, so that the economical efficiency of the arm support is improved.
Example 2
On the basis of embodiment 1, each pin shaft 21 of this embodiment is arranged in an arc shape, and the cross section of the arm support body 1 is arranged in a rectangular shape. Referring to fig. 1, the boom body 1 includes a bottom knuckle arm 11; the bottom end of the bottom knuckle arm 11 is connected to a crane; the top end of the bottom section arm 11 is connected with a bottom transition section. The arm support body 1 comprises a top knuckle arm 16; the bottom end of the top section arm 16 is connected with the top transition section 15; the top end of the top arm 16 is freely arranged.
In this embodiment is used, end transition section 13 quantity is 2, including end transition section I and end transition section II, and end transition section II bottom is connected on I top of end transition section. Referring to fig. 1, the size of the cross section of the bottom end of the bottom transition section I is smaller than that of the cross section of the top end of the bottom transition section I; the size of the cross section of the bottom end of the bottom transition section II is larger than that of the cross section of the top end of the bottom transition section II.
Example 3
On the basis of embodiment 1, the number of the top transition sections 15 in this embodiment is 1. The bottom end of the bottom knuckle arm 11 is connected to a crane; the top end of the bottom section arm 11 is connected with the bottom end of the bottom transition section. The arm support body 1 comprises a top knuckle arm 16; the bottom end of the top section arm 16 is connected with the top end of the top transition section 15; the top end of the top arm 16 is freely arranged.
Real-time example 4
On the basis of embodiment 1, the number of top transition sections 15 of this embodiment is 2, including top transition section I and top transition section II, and top transition section I top is connected with top transition section II bottom.
In application, the size of the top cross section of the top transition section I is larger than that of the bottom cross section of the top transition section II; the outer diameter of the boom main chord 121 of the top transition section I is larger than that of the boom main chord 121 of the top transition section II.
Example 5
On the basis of the embodiment 1 or 2, the present embodiment provides a crane, which includes the crane boom described in the embodiment 1 or 2.
In conclusion, the cross section of the bottom arm and the top arm of the arm support is changed for many times, namely, the cross section is changed from small to large and then from large to small, so that the bearing performance of the arm support can be enhanced, the cost can be saved as much as possible, and the weight of the arm support is reduced as much as possible; the utility model can lighten the arm frame by reducing the size of the main chord member of the bottom section arm to the top section arm of the arm frame for many times; the utility model discloses a set up not unidimensional connection structure round pin axle, lightweight cantilever crane can further be realized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A crane boom is characterized by comprising a boom body (1); the arm support body (1) comprises a plurality of pin shafts (21), a multi-section bottom transition section (13), a uniform-section variable pin section (14) and one or more sections of top transition sections (15);
each section of bottom transition section (13), each section of uniform-section variable pin section (14) and each section of top transition section (15) comprise an arm support main chord (121), and each section of arm support main chord (121) is provided with a joint (132) matched with the pin shaft (21);
the joints (132) are sleeved one by one through pin shafts (21), and each section of bottom transition section (13), each section of uniform-section variable pin section (14) and each section of top transition section (15) are sequentially connected in front and back;
the size of the cross section of the bottom end of each section of the bottom transition section (13) is smaller than that of the cross section of the top end; the size of the top cross section of the front section of the bottom transition section is smaller than that of the bottom cross section of the rear section of the bottom transition section;
the cross section size of the bottom end of each top transition joint (15) is larger than that of the top end; the size of the top cross section of the front section of top transition section is larger than that of the bottom cross section of the rear section of top transition section;
the outer diameter of the front section of the main chord member (121) of the arm support is larger than that of the rear section of the main chord member of the arm support;
the size of the front section of pin shaft (21) is larger than that of the back section of pin shaft.
2. Crane jib according to claim 1, wherein each pin (21) is arranged in an arc.
3. Crane jib according to claim 1, wherein the number of bottom transition sections (13) is 2.
4. A crane jib according to claim 1, wherein the jib body (1) comprises a bottom knuckle arm (11); the bottom end of the bottom knuckle arm (11) is connected to a crane; the top end of the bottom section arm (11) is connected with a bottom transition section.
5. A crane jib according to claim 1, wherein the jib body (1) comprises a top knuckle arm (16); the bottom end of the top section arm (16) is connected with a top transition section (15); the top end of the top knuckle arm (16) is freely arranged.
6. The crane jib according to claim 1, wherein the cross section of the jib body (1) is rectangular.
7. A crane, comprising a crane jib according to any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122764439.XU CN218320443U (en) | 2021-11-12 | 2021-11-12 | Crane boom and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122764439.XU CN218320443U (en) | 2021-11-12 | 2021-11-12 | Crane boom and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218320443U true CN218320443U (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122764439.XU Active CN218320443U (en) | 2021-11-12 | 2021-11-12 | Crane boom and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218320443U (en) |
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2021
- 2021-11-12 CN CN202122764439.XU patent/CN218320443U/en active Active
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