CN102659033A - Crane jib and crane - Google Patents
Crane jib and crane Download PDFInfo
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- CN102659033A CN102659033A CN201210144392XA CN201210144392A CN102659033A CN 102659033 A CN102659033 A CN 102659033A CN 201210144392X A CN201210144392X A CN 201210144392XA CN 201210144392 A CN201210144392 A CN 201210144392A CN 102659033 A CN102659033 A CN 102659033A
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- arm
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- crane
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Abstract
The invention discloses a crane jib and a crane with the same. The crane jib comprises a jib main body (1) and a jib head (2), wherein a pulley mechanism (3) is arranged in the jib head (2); and the jib head (2) is rotatably arranged at the end of the jib main body (1). Through the technical scheme, the jib head can rotate relative to the jib main body and can drive a pulley arranged in the jib head to move together, so that when a lifted object is not positioned under the jib head, the jib head and the pulley can adaptively rotate to a position suitable for guiding a steel wire rope, and the steel wire rope is prevented from being separated from the pulley.
Description
Technical field
The present invention relates to the arm of hoisting crane, particularly, relate to a kind of crane arm and the hoisting crane that comprises this crane arm.
Background technology
As shown in Figure 1, crane arm generally includes arm main body 1 and arm head 2, and the pulley 3a of guiding steel rope S is installed in the arm head 2.In the prior art, arm head 2 is fixed on the end of arm main body 1 usually, for example directly arm head 2 is welded on the arm main body 1 usually.On the one hand, this integral type arm size is bigger, is unfavorable for installation, attended operation.On the other hand, when the weight that lifts by crane is not under arm head 2, be equivalent to arm through the oblique weight that lifts of steel rope S; As shown in Figure 2, in this case, steel rope S breaks away from the guiding of pulley 3a easily; Rope promptly occurs taking off, cause safety problem and influence hoisting crane working on.
Summary of the invention
The purpose of this invention is to provide a kind of crane arm, this crane arm can conveniently install, safeguard, and can be according to the direction-adaptive ground adjusting position of steel rope, pulley is adjusted to the position of the steel rope that is suitable for leading, avoids taking off rope.
To achieve these goals; The present invention provides a kind of crane arm, and this crane arm comprises arm main body and arm head, in the said arm head pulley mechanism is installed; Wherein, Said arm head is rotatably installed in the end of said arm main body, and wherein, the rotation axis of said arm head is arranged essentially parallel to the bearing of trend of said arm main body.
Preferably; Said crane arm comprises S. A., and said S. A. extends to the inside of said arm head from the inside of said arm main body, in the inside of said arm main body; Said S. A. is connected to said arm main body through clutch shaft bearing; Thereby said S. A. can be rotated with respect to said arm main body, and in the inside of said arm head, said S. A. is captiveed joint with said arm head.
Preferably, the outside of said S. A. is arranged with axle sleeve, and said clutch shaft bearing is connected to said arm main body between said axle sleeve and said S. A. and through said axle sleeve.
Preferably, said axle sleeve is fixed in the said arm main body through first stay bearing plate.
Preferably; Said arm main body comprises first end face; Said arm head comprises and cooresponding second end face of said first end face, is provided with between said first end face and said second end face and allows said first end face and counterrotating second bearing of said second end face.
Preferably, said second bearing is a surface bearing.
Preferably; The end of said arm main body is provided with second stay bearing plate that connects said S. A. and said arm main body; The end of said arm head is provided with the 3rd stay bearing plate that connects said S. A. and said arm head, and said second bearing installation is between said second stay bearing plate and said the 3rd stay bearing plate.
Preferably, said pulley mechanism comprises pulley and bearing pin, and said pulley is installed in the said arm head through said bearing pin and is positioned at said S. A. below.
The present invention also provides a kind of hoisting crane, and wherein, this hoisting crane comprises crane arm of the present invention.
Through technique scheme, the arm head can move thereby can drive the pulley that is installed in the arm head with respect to the rotation of arm main body together.Thereby when lifting article not under the arm head time, arm head and pulley can rotate to the position of the steel rope that is suitable for leading adaptively, avoid steel rope disengaging pulley.
Other features and advantages of the present invention will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification sheets, is used to explain the present invention with the following specific embodiment, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the crane arm of explanation prior art;
Fig. 2 is that the crane arm of explanation prior art carries out the oblique structural representation that lifts;
Fig. 3 is the cutaway view of annexation of arm main body and arm head of a kind of embodiment of explanation crane arm of the present invention;
Fig. 4 is that the crane arm of instruction diagram 3 carries out the oblique structural representation that lifts.
Description of reference numerals
1: arm main body 2: the arm head
3: pulley mechanism 3a: pulley 3b: bearing pin 4: S. A.
5: axle sleeve 6: 8: the second bearings of 7: the first stay bearing plates of clutch shaft bearing
10: the three stay bearing plate S of 9: the second stay bearing plates: steel rope
The specific embodiment
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.Should be understood that the specific embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
In the present invention, do not doing under the situation of opposite explanation, the noun of locality of use typically refers to reference to upper and lower, left and right shown in the drawings like " upper and lower, left and right "; " inside and outside " is meant inside and outside with respect to the profile of each parts itself.
According to an aspect of the present invention; A kind of crane arm is provided, and this crane arm comprises arm main body 1 and arm head 2, in the said arm head 2 pulley mechanism 3 is installed; Wherein, said arm head 2 is rotatably installed in the end of said arm main body 1.
Use crane arm of the present invention; As required; Arm head 2 can move thereby can drive the pulley structure 3 that is installed in the arm head 2 with respect to 1 rotation of arm main body together, thereby when the lifting article are not under arm head 2; Arm head 2 and pulley mechanism 3 are rotated to adaptively make and avoid steel rope to take off rope in pulley mechanism 3 position of guiding steel wire rope well.
Wherein, the rotation axis of said arm head 2 can be arranged essentially parallel to the bearing of trend of said arm main body 1, that is, when carrying out the self adaptation rotation, arm head 2 can that kind as shown in Figure 4 be swung around rotation axis with pulley mechanism 3.Among Fig. 4, solid line is depicted as initial position, and dotted line is depicted as self adaptation and rotates adjusted position.
Among the present invention, arm head 2 can be installed to arm main body 1 through various suitable modes and structure.Preferably, as shown in Figure 3, said crane arm can comprise S. A. 4; Said S. A. 4 extends to the inside of said arm head 2 from the inside of said arm main body 1; In the inside of said arm main body 1, said S. A. 4 is connected to said arm main body 1 through clutch shaft bearing 6, thereby said S. A. 4 can be rotated with respect to said arm main body 1; In the inside of said arm head 2, said S. A. 4 is captiveed joint with said arm head 2.
Preferably, as shown in Figure 3, the outside of said S. A. 4 can be arranged with axle sleeve 5, and said clutch shaft bearing 6 is connected to said arm main body 1 between said axle sleeve 5 and said S. A. 4 and through said axle sleeve 5.Particularly; Can be respectively mounting groove be set at the correspondence position of axle sleeve 5 and S. A. 4; To limit the installation site; Thereby can clutch shaft bearing 6 be installed in the mounting groove on the one hand, can limit the relative position of axle sleeve 5 and S. A. 4 on the other hand, prevent axial the relatively moving along S. A. 4 of S. A. 4 and axle sleeve 5 through said mounting groove and clutch shaft bearing 6.
In addition, preferably, said axle sleeve 5 can be fixed in the said arm main body 1 through first stay bearing plate 7.Thus, can strengthen being connected of axle sleeve 5 and arm main body 1 through first stay bearing plate 7.In addition, can also axle sleeve 5 and S. A. 4 be arranged on position suitable in the arm main body 1 through different size and design-calculated first stay bearing plate 7.Particularly, first stay bearing plate 7 can be various suitable structures and form, as long as can captive joint axle sleeve 5 and arm main body 1.For example, first stay bearing plate 7 can comprise two relative clamps, and arm main body 1 is fixed in the upper end of each clamp, and the clamp middle part has the mounting hole of clamping axle sleeve 1.Have the mounting hole of differing heights or the clamp of different size through design, can regulate the position of axle sleeve 5 and S. A. 4.
In addition, under running condition, because first stay bearing plate 7 only bears usually and upwards pressure, therefore the lower end of first stay bearing plate 7 need not to be connected to arm main body 1.In other words, as shown in Figure 3, first stay bearing plate 7 can only be connected in the inboard top of arm main body 1, thus can saving in material and be convenient to install.
In addition; Said arm main body 1 comprises first end face; Said arm head 2 comprises and cooresponding second end face of first end face, preferably, can be provided with between said first end face and said second end face and allow said first end face and counterrotating second bearing 8 of said second end face.Thus, can rotatably engage said first end face and second end face, avoid first end face and second end face because of relatively rotating the wearing and tearing that cause through second bearing 8.
Wherein, said second bearing 8 can be various types of surface bearings, as long as first end face and second end face are rotatably engaged.
Preferably; As shown in Figure 3; The end of said arm main body 1 can be provided with second stay bearing plate 9 that connects said S. A. 4 and said arm main body 1; The end of said arm head 2 can be provided with the 3rd stay bearing plate 10 that connects said S. A. 4 and said arm head 2, and said second bearing 8 is installed between said second stay bearing plate 9 and said the 3rd stay bearing plate 10.Wherein, second stay bearing plate 9 can be strengthened being connected of S. A. 4 and arm main body 1, and the 3rd stay bearing plate 10 can be strengthened being connected of S. A. 4 and arm head 2.In addition, second stay bearing plate 9 and the 3rd stay bearing plate 10 can be used as the installation basis of second bearing 8, and have strengthened being connected of arm main body 1 and arm head 2 through second bearing 8.
In addition, pulley mechanism 3 can be installed to any appropriate location in the arm head 2 through various suitable modes.For example, as shown in Figure 4, said pulley mechanism 3 can comprise pulley 3a and bearing pin 3b, and said pulley 3a can be installed in the said arm head 2 and is positioned at said S. A. 4 belows through said bearing pin 3b.
According to a further aspect in the invention, a kind of hoisting crane is provided, wherein, this hoisting crane comprises crane arm of the present invention.Use hoisting crane of the present invention; As required; Arm head 2 can move thereby can drive the pulley structure 3 that is installed in the arm head 2 with respect to 1 rotation of arm main body together, thereby when the lifting article are not under arm head 2; Arm head 2 and pulley mechanism 3 are rotated to adaptively make and avoid steel rope to take off rope in pulley mechanism 3 position of guiding steel wire rope well.
More than combine accompanying drawing to describe preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned embodiment; In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention equally.
Claims (9)
1. crane arm; This crane arm comprises arm main body (1) and arm head (2); Pulley mechanism (3) is installed in the said arm head (2), it is characterized in that, said arm head (2) is rotatably installed in the end of said arm main body (1); Wherein, the rotation axis of said arm head (2) is arranged essentially parallel to the bearing of trend of said arm main body (1).
2. crane arm according to claim 1; Wherein, Said crane arm comprises S. A. (4), and said S. A. (4) extends to the inside of said arm head (2) from the inside of said arm main body (1), in the inside of said arm main body (1); Said S. A. (4) is connected to said arm main body (1) through clutch shaft bearing (6); Thereby said S. A. (4) can be rotated with respect to said arm main body (1), and in the inside of said arm head (2), said S. A. (4) is captiveed joint with said arm head (2).
3. crane arm according to claim 2; Wherein, The outside of said S. A. (4) is arranged with axle sleeve (5), and said clutch shaft bearing (6) is positioned between said axle sleeve (5) and the said S. A. (4) and is connected to said arm main body (1) through said axle sleeve (5).
4. crane arm according to claim 3, wherein, said axle sleeve (5) is fixed in the said arm main body (1) through first stay bearing plate (7).
5. crane arm according to claim 2; Wherein, Said arm main body (1) comprises first end face; Said arm head (2) comprises and cooresponding second end face of said first end face, is provided with between said first end face and said second end face and allows said first end face and counterrotating second bearing of said second end face (8).
6. crane arm according to claim 5, wherein, said second bearing (8) is a surface bearing.
7. according to claim 5 or 6 described crane arms; Wherein, The end of said arm main body (1) is provided with second stay bearing plate (9) that connects said S. A. (4) and said arm main body (1); The end of said arm head (2) is provided with the 3rd stay bearing plate (10) that connects said S. A. (4) and said arm head (2), and said second bearing (8) is installed between said second stay bearing plate (9) and said the 3rd stay bearing plate (10).
8. according to any described crane arm among the claim 1-6; Wherein, Said pulley mechanism (3) comprises pulley (3a) and bearing pin (3b), and said pulley (3a) is installed in the said arm head (2) through said bearing pin (3b) and is positioned at said S. A. (4) below.
9. a hoisting crane is characterized in that, this hoisting crane comprises according to any described crane arm among the claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210144392XA CN102659033A (en) | 2012-05-10 | 2012-05-10 | Crane jib and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210144392XA CN102659033A (en) | 2012-05-10 | 2012-05-10 | Crane jib and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102659033A true CN102659033A (en) | 2012-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210144392XA Pending CN102659033A (en) | 2012-05-10 | 2012-05-10 | Crane jib and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102659033A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343458A (en) * | 1979-05-18 | 1982-08-10 | Francois Simon | Supports of boom end sheaves or similar for a lifting and/or handling machine |
| JPS5983887U (en) * | 1982-11-27 | 1984-06-06 | 株式会社多田野鉄工所 | Crane swinging sheave device |
| JP2004067353A (en) * | 2002-08-09 | 2004-03-04 | Tadano Ltd | Retracting device for crane hook |
| JP2004155544A (en) * | 2002-11-06 | 2004-06-03 | Tadano Ltd | Wire re-wrapping mechanism for jib tip pulley |
-
2012
- 2012-05-10 CN CN201210144392XA patent/CN102659033A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343458A (en) * | 1979-05-18 | 1982-08-10 | Francois Simon | Supports of boom end sheaves or similar for a lifting and/or handling machine |
| JPS5983887U (en) * | 1982-11-27 | 1984-06-06 | 株式会社多田野鉄工所 | Crane swinging sheave device |
| JP2004067353A (en) * | 2002-08-09 | 2004-03-04 | Tadano Ltd | Retracting device for crane hook |
| JP2004155544A (en) * | 2002-11-06 | 2004-06-03 | Tadano Ltd | Wire re-wrapping mechanism for jib tip pulley |
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Application publication date: 20120912 |