CN203428809U - Crane and cargo boom thereof - Google Patents
Crane and cargo boom thereof Download PDFInfo
- Publication number
- CN203428809U CN203428809U CN201320517678.8U CN201320517678U CN203428809U CN 203428809 U CN203428809 U CN 203428809U CN 201320517678 U CN201320517678 U CN 201320517678U CN 203428809 U CN203428809 U CN 203428809U
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- China
- Prior art keywords
- steel rope
- fixed part
- rope fixed
- crane arm
- steel wire
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Abstract
The utility model discloses a cargo boom, wherein end supporting plates used for supporting a main boom pulley block and a middle supporting plate which is arranged between the end supporting plates are arranged on the boom head of the cargo boom; a first steel wire rope fixing part is arranged on each end supporting plate; the cargo boom further comprises a second steel wire rope fixing rope which is arranged on the middle supporting plate. As the second steel wire rope fixing part is arranged between the first steel wire rope fixing parts at two ends, the horizontal distance between the second steel wire rope fixing part and a steel wire rope outlet point on a lifting hook is less than the horizontal distance between the first steel wire rope fixing part and the steel wire rope outlet point on the lifting hook; under the same lifting height, the tilt angle of the steel wire rope which is used for connecting the second steel wire rope fixing parts with a movable block on the lifting hook is reduced significantly, therefore, the interference between the steel wire rope and the pulley of the lifting body is avoided effectively, and consequently, the wear of the steel wire rope and the pulley block of the lifting hook is reduced. At the same time, the utility model further discloses a crane with the cargo boom.
Description
Technical field
The utility model relates to ground rigging technical field, more particularly, relates to a kind of hoisting crane and crane arm.
Background technology
Crane arm is the topmost working part of movable crane, and wherein telescopic boom is wherein modal a kind of.Along with super-tonnage crane develops to kiloton, require principal arm hoisting weight constantly to increase, in order to meet the demands, the multiplying power of the assembly pulley on crane arm requires also just more and more higher.
The multiplying power of the assembly pulley on crane arm is higher, pulley quantity on crane arm is also just more so, this just makes the arm head of crane arm minor details roomy, as shown in fig. 1, when carrying out lift heavy operation, load hook is often suspended on the steel rope of lifting mechanism 5 by means of parts such as assembly pulleys, steel rope is walked around arm head track adjusting wheel 4 successively, principal arm assembly pulley 2 and lifting hook pulley group 3 are rear fixing, wherein principal arm assembly pulley 2 is arranged on the arm head place of crane arm by a plurality of stay bearing plates, a plurality of stay bearing plates comprise the end portion supports plate at both ends on the arm head Width in crane arm, and the middle part stay bearing plate between described end portion supports plate, when the multiplying power of load hook is even number, steel rope finally need to be fixed on the steel rope fixed part 1 of arm head of crane arm.
On the arm head of the crane arm of super-tonnage crane, be only provided with two steel rope fixed parts 1 at present, and these two steel rope fixed parts 1 are separately positioned on two end portion supports plates, as shown in Figure 2, when adopting powerful suspension hook to carry out low range operation, larger for connecting the angle of inclination of steel rope of the movable pulley on steel rope fixed part 1 suspension hook on the arm head of crane arm, and the angle of inclination of this section of steel rope increases along with the increase of suspension hook lifting altitude, as shown in Figure 3, after this section of steel rope tilts to a certain degree, will interfere with the pulley of suspension hook itself, make steel rope and lifting hook pulley group 3 unstable wears.
Therefore, how can when adopting powerful suspension hook to carry out low range operation, avoid steel rope and lifting hook pulley group to interfere, be the technical matters that current those skilled in the art need solution badly.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of crane arm, when avoiding adopting powerful suspension hook to carry out low range operation, between steel rope and lifting hook pulley group, interfere, thus the wearing and tearing that alleviate steel rope and lifting hook pulley group;
Another object of the present utility model is to provide a kind of hoisting crane with above-mentioned crane arm.
For achieving the above object, the utility model provides following technical scheme:
A kind of crane arm, on the arm head of described crane arm, be provided with for supporting the end portion supports plate of principal arm assembly pulley and being arranged at the middle part stay bearing plate between described end portion supports plate, and on described end portion supports plate, be provided with the first steel rope fixed part, this crane arm also comprises the second steel rope fixed part being arranged on the stay bearing plate of described middle part.
Preferably, described the first steel rope fixed part and described the second steel rope fixed part include cross-under ear and are opened in the jack hole that can pass for head of steel wire rope on described cross-under ear, the cross-under ear of wherein said the first steel rope fixed part is arranged on described end portion supports plate and is coplanar with described end portion supports plate, and the cross-under ear of described the second steel rope fixed part is arranged on the stay bearing plate of described middle part and is coplanar with described middle part stay bearing plate.
Preferably, the cross-under ear of described the first steel rope fixed part and described end portion supports plate are integral type structure.
Preferably, the cross-under ear of described the second steel rope fixed part and described middle part stay bearing plate are integral type structure.
Preferably, the cross-under ear of described the first steel rope fixed part is dismantled and assembled connection with the cross-under ear of described end portion supports plate and described the second steel rope fixed part with described middle part stay bearing plate.
Preferably, the jack hole of described the second steel rope fixed part is greater than the radius of described principal arm assembly pulley middle pulley to the distance of the pivot shaft of described principal arm assembly pulley, and both differences are not less than 10cm.
Preferably, the spacing between described end portion supports plate and the middle part stay bearing plate adjacent with it is the first spacing, and the spacing between adjacent two middle part stay bearing plates is the second spacing, and described the first spacing equates with the second spacing.
From above-mentioned technical scheme, can find out, in the crane arm that the utility model provides, on end portion supports plate, be provided with the first steel rope fixed part, and set up the second steel rope fixed part on the middle part stay bearing plate between two end portion supports plates.
Like this, when adopting high magnification suspension hook to carry out low range operation, the end of steel rope can be fixed on the second steel rope fixed part, because the second steel rope fixed position is between the first steel rope fixed part at two ends, thereby second horizontal throw between steel rope rope stretching point on steel rope fixed part and suspension hook be less than the horizontal throw between the steel rope rope stretching point on the first steel rope fixed part and suspension hook, thereby in the situation that lifting altitude is identical, for connecting the angle of inclination of the steel rope of the movable pulley on the second steel rope fixed part and suspension hook, obviously reduce, this can effectively be avoided the pulley of steel rope and suspension hook itself to interfere, thereby reduce the wearing and tearing of steel rope and lifting hook pulley group.
The utility model also provides a kind of hoisting crane, comprises crane arm, and described crane arm is the as above crane arm described in any one.
Because above-mentioned crane arm has above-mentioned technique effect, therefore comprise that the hoisting crane of this crane arm also has above-mentioned technique effect, repeats no more in present specification.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The wiring schematic diagram of the steel rope of hoisting crane when Fig. 1 is lift heavy;
Fig. 2 is the structural representation of the arm head of crane arm in prior art;
The wiring schematic diagram of steel rope when Fig. 3 carries out low range operation for the powerful suspension hook of employing;
The structural representation of the arm head that Fig. 4 is the crane arm that provides in the utility model embodiment.
Wherein,
1 is steel rope fixed part, and 2 is principal arm assembly pulley, and 3 is lifting hook pulley group, and 4 is arm head track adjusting wheel, and 5 is lifting mechanism;
01 is end portion supports plate, and 02 for middle part stay bearing plate, 03 is the first steel rope fixed part, and 04 is the second steel rope fixed part.
The specific embodiment
Core of the present utility model is to provide a kind of crane arm, and the jib tip structure to this crane arm improves, when avoiding adopting powerful suspension hook to carry out low range operation, between steel rope and lifting hook pulley group, interfere, thus the wearing and tearing that alleviate steel rope and lifting hook pulley group;
Another core of the present utility model is to provide a kind of hoisting crane with above-mentioned crane arm.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 4, the structural representation of the arm head that Fig. 4 is the crane arm that provides in the utility model embodiment.
The crane arm providing in the present embodiment, the hoisting crane that can adapt to Multiple Type, be particularly useful for super-tonnage crane more than kiloton, this crane arm is mainly to have made improvement for the jib tip structure of crane arm, on the arm head of crane arm, be provided with for supporting the end portion supports plate 01 of principal arm assembly pulley and being arranged on the middle part stay bearing plate 02 between end portion supports plate 01, and on end portion supports plate 01, be provided with the first steel rope fixed part 03, with respect to prior art, the core improvement of the crane arm in the present embodiment is, also comprise the second steel rope fixed part 04 being arranged on the stay bearing plate 02 of middle part.
As shown in Figure 4, two middle part stay bearing plates 02 are provided between two end portion supports plates 01 in the accompanying drawing that provided herein, the wheel shaft of principal arm assembly pulley is arranged on end portion supports plate 01 and middle part stay bearing plate 02, on each end portion supports plate 01, be provided with a first steel rope fixed part 03, on each middle part stay bearing plate 02, be provided with a second steel rope fixed part 04, certainly, the quantity of middle part stay bearing plate 02 can also have multiple variation, this is relevant with the multiplying power that hoists of crane arm, the multiplying power that hoists is higher, the pulley quantity on crane arm is also just more, this just makes the arm head of crane arm minor details roomy, thereby need the more middle part of design stay bearing plate 02 to support principal arm assembly pulley.
Please also refer to Fig. 3 and Fig. 4, when adopting high magnification suspension hook to carry out low range operation, can be by the second steel rope fixed part 04 of the arm head of the fixing crane arm that provided in the present embodiment in the end of steel rope, because the second steel rope fixed part 04 is between the first steel rope fixed part 03 at two ends, thereby second horizontal throw between steel rope rope stretching point on steel rope fixed part 04 and suspension hook be less than the horizontal throw between the steel rope rope stretching point on the first steel rope fixed part 03 and suspension hook, thereby in the situation that lifting altitude is identical, for connecting the angle of inclination of the steel rope of the movable pulley on the second steel rope fixed part 04 and suspension hook, obviously reduce, this can effectively be avoided the pulley of steel rope and suspension hook itself to interfere, thereby reduce the wearing and tearing of steel rope and lifting hook pulley group.
The Main Function of the first steel rope fixed part 03 and the second steel rope fixed part 04 is fixing one end of steel rope, to make steel rope in the rotary course of lifting mechanism, weight be hung and be got, for fixing one end of steel rope, the first steel rope fixed part 03 and the second steel rope fixed part 04 can have multiple way of realization, for example the first steel rope fixed part 03 and the second steel rope fixed part 04 all can form by tapped bore with the bolt of larger end cap, steel rope is provided with the connecting bore that can pass for bolt, bolt passes connecting bore and tightens with tapped bore, thereby the end of steel rope is fixed.
But this fixed form dismounting is comparatively loaded down with trivial details, need to repeatedly tighten and looser a bolt, in actual job process, can take more production time, be unfavorable for the raising of production efficiency, the way of realization of another first steel rope fixed part 03 and the second steel rope fixed part 04 be provided in the present embodiment for this reason:
The jack hole that the first steel rope fixed part 03 and the second steel rope fixed part 04 include cross-under ear and be opened on cross-under ear and can pass for steel cord ends, wherein the cross-under ear of the first steel rope fixed part 03 is arranged on end portion supports plate 01 and is coplanar with end portion supports plate 01; The cross-under ear of the second steel rope fixed part 04 is arranged on the stay bearing plate 02 of middle part, and coplanar with middle part stay bearing plate 02, as shown in Figure 4.
Steel rope has U-shaped attaching parts for one end operated by rotary motion being connected with steel rope fixed part, after the jack hole at U-shaped attaching parts through the first steel rope fixed part 03 or the second steel rope fixed part 04, directly on U-shaped, inserts lock piece.
This connection mode makes the dismounting between steel rope and the first steel rope fixed part 03 or the second steel rope fixed part 04 become convenient and swift, can effectively save production time, increases work efficiency.
Cross-under ear in the first steel rope fixed part 03 can be integral type structure with end portion supports plate 01, can synchronously the first steel rope fixed part 03 be made like this in the process of 01 punching press of end portion supports plate or casting; Cross-under ear in certain the second steel rope fixed part 04 also can be designed to integral structure with middle part stay bearing plate 02, and as shown in Figure 4, it also has identical technique effect.
The first steel rope fixed part 03 and end portion supports plate 01, and second steel rope fixed part 04 be set to integral structure with middle part stay bearing plate 02, although can simplify the production process of crane arm, but its drawback of bringing is the not removable of the first steel rope fixed part 03 and the second steel rope fixed part 04, in actual job process, possible steel rope is on some the first steel rope fixed parts 03 or the second steel rope fixed part 04 fixedly time, and the existence of other steel rope fixed parts makes operation inconvenience.In order to eliminate this kind of drawback, the first steel rope fixed part 03 providing in the present embodiment and the second steel rope fixed part 04 are connected with middle part stay bearing plate 02 is dismantled and assembled with end portion supports plate 01 respectively, and for example bolt connects; Or be provided with fastener on end portion supports plate 01 and middle part stay bearing plate 02, on the cross-under ear of the first steel rope fixed part 03 and the second steel rope fixed part 04, be provided with the draw-in groove with fastener adaptation, the first steel rope fixed part 03 and the second steel rope fixed part 04 clamp and are connected with middle part stay bearing plate 02 with end portion supports plate 01 respectively.
Because the second steel rope fixed part 04 has been arranged on the stay bearing plate 02 of middle part, if thereby the jack hole on the second steel rope fixed part 04 and the distance between principal arm assembly pulley less, steel cord ends may and principal arm assembly pulley between interfere, for this reason, in the crane arm providing in the present embodiment, the jack hole of the second steel rope fixed part 04 is greater than the radius of principal arm assembly pulley middle pulley to the distance of the pivot shaft of principal arm assembly pulley, and minimal difference is between the two 10cm.
Distance between end portion supports plate 01 and the middle part stay bearing plate 02 that is adjacent is the first spacing, spacing between adjacent two middle part stay bearing plates 02 is the second spacing, in order to further facilitate the selection to steel rope fixed part in practical work process, the first spacing in the present embodiment equates with the second spacing.
The invention also discloses a kind of hoisting crane with above-mentioned crane arm, due to above-mentioned crane arm being installed on this hoisting crane, therefore have all technique effects of crane arm in above-described embodiment concurrently, repeat no more herein.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a crane arm, on the arm head of described crane arm, be provided with for supporting two end portion supports plates (01) of principal arm assembly pulley and being arranged at the middle part stay bearing plate (02) between two described end portion supports plates (01), and on described end portion supports plate (01), be provided with the first steel rope fixed part (03), it is characterized in that, also comprise the second steel rope fixed part (04) being arranged on described middle part stay bearing plate (02).
2. crane arm as claimed in claim 1, it is characterized in that, described the first steel rope fixed part (03) and described the second steel rope fixed part (04) include cross-under ear and are opened in the jack hole that can pass for head of steel wire rope on described cross-under ear, it is upper and coplanar with described end portion supports plate (01) that the cross-under ear of wherein said the first steel rope fixed part (03) is arranged at described end portion supports plate (01), and it is upper and coplanar with described middle part stay bearing plate (02) that the cross-under ear of described the second steel rope fixed part (04) is arranged at described middle part stay bearing plate (02).
3. crane arm as claimed in claim 2, is characterized in that, the cross-under ear of described the first steel rope fixed part (03) and described end portion supports plate (01) are integral type structure.
4. crane arm as claimed in claim 2, is characterized in that, the cross-under ear of described the second steel rope fixed part (04) and described middle part stay bearing plate (02) are integral type structure.
5. crane arm as claimed in claim 2, it is characterized in that, the cross-under ear of described the first steel rope fixed part (03) and described end portion supports plate (01), and the cross-under ear of described the second steel rope fixed part (04) is dismantled and assembled connection with described middle part stay bearing plate (02).
6. crane arm as claimed in claim 2, is characterized in that, the jack hole of described the second steel rope fixed part (04) is greater than the radius of described principal arm assembly pulley middle pulley to the distance of the pivot shaft of described principal arm assembly pulley, and both differences are not less than 10cm.
7. crane arm as claimed in claim 1, it is characterized in that, spacing between described end portion supports plate (01) and the middle part stay bearing plate (02) adjacent with it is the first spacing, spacing between adjacent two middle part stay bearing plates (02) is the second spacing, and described the first spacing equates with the second spacing.
8. a hoisting crane, comprises crane arm, it is characterized in that, described crane arm is the crane arm as described in claim 1-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320517678.8U CN203428809U (en) | 2013-08-22 | 2013-08-22 | Crane and cargo boom thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320517678.8U CN203428809U (en) | 2013-08-22 | 2013-08-22 | Crane and cargo boom thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203428809U true CN203428809U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320517678.8U Expired - Fee Related CN203428809U (en) | 2013-08-22 | 2013-08-22 | Crane and cargo boom thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203428809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829768A (en) * | 2016-12-14 | 2017-06-13 | 武汉船用机械有限责任公司 | A kind of pulley gear for crane |
-
2013
- 2013-08-22 CN CN201320517678.8U patent/CN203428809U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829768A (en) * | 2016-12-14 | 2017-06-13 | 武汉船用机械有限责任公司 | A kind of pulley gear for crane |
| CN106829768B (en) * | 2016-12-14 | 2019-04-02 | 武汉船用机械有限责任公司 | A kind of pulley gear for crane |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20200822 |