CN105439007A - Super-lifting device of crane, adjusting method of super-lifting device and crane - Google Patents
Super-lifting device of crane, adjusting method of super-lifting device and crane Download PDFInfo
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- CN105439007A CN105439007A CN201510996325.4A CN201510996325A CN105439007A CN 105439007 A CN105439007 A CN 105439007A CN 201510996325 A CN201510996325 A CN 201510996325A CN 105439007 A CN105439007 A CN 105439007A
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- hoisting crane
- lifting device
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- crane
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 181
- 230000000694 effects Effects 0.000 abstract description 5
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- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003637 basic solution Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to the field of cranes and discloses a super-lift device of a crane, an adjusting method of the super-lift device and the crane. The super lifting device of the crane comprises: the device comprises a super-lifting support (4), a first traction mechanism (3), a second traction mechanism (5), and an adjusting mechanism (6) capable of adjusting the length of the second traction mechanism to adjust the tensioning degree of the second traction mechanism. The super-lifting device of the crane can flexibly and effectively adjust the tensioning degree of the second traction mechanism through the adjusting mechanism, improve the effect of the super-lifting device and further improve the lifting performance of the crane.
Description
Technical field
The present invention relates to crane field, particularly, relate to the method for adjustment of the super lifting device of a kind of super lifting device of hoisting crane, hoisting crane and hoisting crane.
Background technology
Hoisting crane is a kind of important construction machinery and equipment material being carried out to lifting, handling.Along with the development of the industries such as building, chemical industry, hoisting capacity and the operation height of hoisting crane also constantly increase, the arm quality of hoisting crane is increasing and length is more and more longer, makes the distortion of arm in crane job process comparatively large, affects the load-carrying ability of hoisting crane.
In tradition, on arm, usually increase super lifting device to change stress form and the state of arm, surpassing strut, surpassed drag-line, having surpassed arm-tie and arm and form the stability that two three-legged structure strengthens arm of super lifting device, improves the lifting capacity of arm.But, the length having surpassed arm-tie of the super lifting device in tradition is fixed, when hoisting arm expansion is to target brachium, surpassed strut vertical with arm or be in certain special angle time, owing to having surpassed drag-line, having surpassed the Gravitative Loads of strut, make to have surpassed arm-tie and be in relaxed state, in the operation process of hoisting crane, the distortion of arm need first offset the relaxed length having surpassed arm-tie, surpass drag-line cannot normally play a role, this weakens super lifting device effect operationally greatly, causes the lifting performance of hoisting crane to decline.Although be usually provided with the pre-tensioner oil cylinder for having surpassed drag-line described in tensioning on super lifting device, too small owing to having surpassed tensioning hydro-cylinder tensile force, the relaxed state having surpassed arm-tie cannot be changed.
Therefore, wish that a kind of super lifting device can overcome or at least alleviate the above-mentioned defect of prior art.
Summary of the invention
The object of this invention is to provide a kind of super lifting device of hoisting crane, the super lifting device of this hoisting crane can improve the action effect of the super lifting device of hoisting crane.
To achieve these goals, the invention provides a kind of super lifting device of hoisting crane, this super lifting device comprises: surpassed support, and this first end having surpassed support is for being arranged on the arm of hoisting crane; First draw-off mechanism, the first end of this first draw-off mechanism is arranged on described the second end place having surpassed support, and the second end of described first draw-off mechanism is for being arranged on the first end place of described arm; Second draw-off mechanism, the first end of this second draw-off mechanism is arranged on described the second end place having surpassed support, second end of described second draw-off mechanism is for installing the second end place be arranged on hoisting crane of described arm, or, second end of described second draw-off mechanism is for being arranged on the turntable of hoisting crane, described super lifting device also comprises adjusting mechanism, and this adjusting mechanism can adjust the length of described second draw-off mechanism to adjust the tensioning degree of described second draw-off mechanism.
Preferably, described second draw-off mechanism comprises first installing mechanism at the first end place being arranged on described second draw-off mechanism, the second installing mechanism being arranged on the second end place of described second draw-off mechanism and the tractive main body be connected between described first installing mechanism and described second installing mechanism, and described adjusting mechanism can adjust the length of described tractive main body.
Preferably, described adjusting mechanism is arranged between described tractive main body and described first installing mechanism.
Preferably, described adjusting mechanism is arranged between described tractive main body and described second installing mechanism.
Preferably, described tractive main body is rope row or arm-tie.
Preferably, the described support vertical that surpassed is installed in described arm.
Preferably, described adjusting mechanism is hydraulic ram, and described hydraulic ram is connected to first end and/or the second end place of described second draw-off mechanism, adjusts the length of described second draw-off mechanism with the stroke by adjusting described hydraulic ram.
According to another aspect of the present invention, a kind of hoisting crane, this hoisting crane comprises turntable and is arranged on the crane system on described turntable, described hoisting crane also comprises the super lifting device according to hoisting crane mentioned above, wherein, the first end having surpassed support is arranged on the arm of crane boom system, and the second end of described first draw-off mechanism is arranged on the first end place of described arm, and the first end of described second draw-off mechanism is arranged on described turntable.
According to a further aspect of the invention, a kind of method of adjustment of super lifting device of hoisting crane is provided, described hoisting crane comprises turntable, be arranged on crane system on described turntable and super lifting device, and described super lifting device comprises: surpassed support, and this first end having surpassed support is arranged on described arm; First draw-off mechanism, the first end of this first draw-off mechanism is arranged on described the second end place having surpassed support, and the second end of described first draw-off mechanism is for being arranged on the first end place of described arm; Second draw-off mechanism, the first end of this second draw-off mechanism is arranged on described the second end place having surpassed support, second end of described second draw-off mechanism is for being arranged on the second end place being arranged on hoisting crane of described arm, or, second end of described second draw-off mechanism is for being arranged on the turntable of hoisting crane, when the lifting performance of hoisting crane depends on the stability of the crane system of hoisting crane, extend the length of described second draw-off mechanism, to reduce described first draw-off mechanism to the pulling force of described arm; When the lifting performance of hoisting crane depends on the intensity of the crane system of hoisting crane, shorten the length of described second draw-off mechanism, to increase described first draw-off mechanism to the pulling force of described arm.
Preferably, described arm is telescoping boom.
By technique scheme, the super lifting device of hoisting crane disclosed in this invention by the tensioning degree that adjusting mechanism is flexible, actv. adjusts the second draw-off mechanism, can improve the action effect of super lifting device, and then improves the lifting performance of hoisting crane.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of the super lifting device of hoisting crane according to one embodiment of the present invention.
Description of reference numerals
1 turntable; 2 arms;
The first end of 21 arms; Second end of 22 arms;
3 first draw-off mechanisms; 4 surpass support;
41 surpass the first end of support; 42 surpass the second end of support;
5 second draw-off mechanisms; 6 adjusting mechanisms.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
According to an aspect of the present invention, provide a kind of super lifting device of hoisting crane, shown in Figure 1, this super lifting device comprises: surpassed support 4, and this first end 41 having surpassed support 4 is for being arranged on the arm 2 of hoisting crane; First draw-off mechanism 3, the first end of this first draw-off mechanism 3 is arranged on the second end 42 place having surpassed support 4, and the second end of the first draw-off mechanism 3 is for being arranged on first end 21 place of arm 2; Second draw-off mechanism 5, the first end of this second draw-off mechanism 5 is arranged on the second end 42 place having surpassed support 4, second end of the second draw-off mechanism 5 is for installing second end 22 place be arranged on hoisting crane of arm 2, or, second end of the second draw-off mechanism 5 is for being arranged on the turntable 1 of hoisting crane, described super lifting device also comprises adjusting mechanism 6, and this adjusting mechanism 6 can adjust the length of described second draw-off mechanism 5 to adjust the tensioning degree of the second draw-off mechanism 5.
The moment that the pulling force of the first draw-off mechanism 3 pairs of arms 2 produces is contrary with the moment direction that the lift heavy of hoisting crane produces, by the first draw-off mechanism 3 produce the moment that moment and lift heavy produce and offset, thus the moment reduced suffered by arm 2, reduce the structural stress of arm 2, improve the lifting performance determined by the intensity of the crane system of hoisting crane.The super lifting device of above-mentioned hoisting crane can by the tensioning degree that adjusting mechanism 6 is flexible, actv. adjusts the second draw-off mechanism 5, can when needs first draw-off mechanism 3 produces larger torque tensioning second draw-off mechanism 5, when needs first draw-off mechanism produces low-force square, loosen the second draw-off mechanism 5, improve the action effect of super lifting device, and then improve the lifting performance of hoisting crane.
Second draw-off mechanism 5 structure and type can select suitable type according to actual needs, preferably, second draw-off mechanism 5 comprises first installing mechanism at the first end place being arranged on the second draw-off mechanism 5, the second installing mechanism being arranged on the second end place of the second draw-off mechanism 5 and the tractive main body be connected between described first installing mechanism and described second installing mechanism, the installation that above-mentioned first installing mechanism and the second installing mechanism are convenient to the second draw-off mechanism is fixed, and the concrete mechanism of the first installing mechanism and the second installing mechanism can carry out suitable selection according to actual needs.Adjusting mechanism 6, by adjusting the length of described tractive main body, to adjust the entire length of described second draw-off mechanism 5, and then adjusts the tensioning degree of the second draw-off mechanism 5.
Suitable selection can be carried out according to actual needs in the position of adjusting mechanism 6, such as, and the middle part of the second draw-off mechanism 5 or other suitable position.Preferably, adjusting mechanism 6 is arranged between described tractive main body and described first installing mechanism, or adjusting mechanism 6 is arranged between described tractive main body and described second installing mechanism.The end making adjusting mechanism 6 close on the second draw-off mechanism 5 is arranged, and is convenient to driving and the installation of adjusting mechanism.
Described tractive main body can carry out suitable selection according to actual needs, such as, and hauling rope etc.Preferably, described tractive main body is rope row or arm-tie, makes the second draw-off mechanism 5 have enough intensity can produce enough pulling force.
The setting angle and the mounting means that have surpassed support 4 can carry out suitable selection according to actual needs, preferably, have surpassed support 4 and have installed perpendicular to arm 2, make the stability having surpassed support 4 higher.
The type of adjusting mechanism 6 can select suitable mechanism according to actual needs, the length of the second draw-off mechanism 5 can be changed, comprise and the second draw-off mechanism 5 is generated heat length continually varying or make the structure of length stepped change of the second draw-off mechanism 5, such as, connecting rod mechanism, pinion and rack, ratchet device etc.Preferably, adjusting mechanism 6 is hydraulic ram, described hydraulic ram is connected to first end and/or the second end place of the second draw-off mechanism 5, the length of the second draw-off mechanism 5 is adjusted with the stroke by adjusting described hydraulic ram, realize the continuous setup of the length of the second draw-off mechanism 5, and the fine setting of the length of the second draw-off mechanism 5 can be realized.Wherein, described hydraulic ram can be connected between described tractive main body and described first installing mechanism and/or the second installing mechanism as mentioned above, also can be connected to surpassed between the second end 42 of support 4 and the first installing mechanism and/or be connected between the second end 22 of arm 2 and the second installing mechanism, user can carry out suitable selection according to actual needs.
Wherein, whether the tensioning degree of the second draw-off mechanism 5 completes tensioning by arranging corresponding testing agency to detect, also by making hydraulic ram have suitable oil pressure, after suitable pulling force can being produced make the second draw-off mechanism 5 tensioning to make the second draw-off mechanism 5, user demand can be met.
According to another aspect of the present invention, additionally provide a kind of hoisting crane, the crane system that this hoisting crane comprises turntable 1 and is arranged on turntable 1, described hoisting crane also comprises the super lifting device according to hoisting crane mentioned above, wherein, the first end 41 having surpassed support 4 is arranged on the arm 2 of the crane system of hoisting crane, and the second end of the first draw-off mechanism 3 is arranged on first end 21 place of arm 2, the first end of the second draw-off mechanism 5 is arranged on turntable 1, to improve the stability of crane system further.Be understandable that, the second end of the second draw-off mechanism 5 also can other appropriate location on erecting crane.
According to a further aspect of the invention, a kind of method of adjustment of super lifting device of hoisting crane is provided, described hoisting crane comprises turntable 1, be arranged on crane system on described turntable 1 and super lifting device, described super lifting device comprises: surpassed support 4, and this first end 41 having surpassed support 4 is arranged on arm 2; First draw-off mechanism 3, the first end of this first draw-off mechanism 3 is arranged on the second end 42 place having surpassed support 4, and the second end of the first draw-off mechanism 3 is for being arranged on first end 21 place of arm 2; Second draw-off mechanism 5, the first end of this second draw-off mechanism 5 is arranged on the second end 42 place having surpassed support 4, second end of the second draw-off mechanism 5 is for being arranged on second end 22 place being arranged on hoisting crane of arm 2, or, second end of the second draw-off mechanism 5 is for being arranged on the turntable 1 of hoisting crane, when the lifting performance of hoisting crane depends on the stability of the crane system of hoisting crane, extend the length of the second draw-off mechanism 5, to reduce the pulling force of the first draw-off mechanism 3 pairs of arms 2, and then reduce the axle pressure of arm 2, what arm 2 was fallen in raising is stability; When the lifting performance of hoisting crane depends on the intensity of the crane system of hoisting crane, shorten the length of the second draw-off mechanism 5, to increase the pulling force of the first draw-off mechanism 3 pairs of arms 2, and then reduce the distortion that arm 2 produces due to the gravity of material.
By arranging adjusting mechanism 6 on super lifting device, make the variable-length of the second draw-off mechanism 5, when the lifting performance of this hoisting crane be determine due to crane system intensity time, the length of the second draw-off mechanism 5 can be reduced, the first draw-off mechanism 3 that basic solution second draw-off mechanism 5 causes due to the first draw-off mechanism 3, second draw-off mechanism 5 and the Gravitative Loads that surpassed support 4 and the second draw-off mechanism 5 initial lax, solve the problem that too small the caused super lifting device of the first draw-off mechanism 3 pulling force cannot normally play a role, improve the lifting performance of hoisting crane; When the lifting performance of this hoisting crane is the monolithic stability decision due to crane system, the length of the second draw-off mechanism 5 can be increased, reduce the pulling force of the first draw-off mechanism 3, and then reduce the component that the first draw-off mechanism 3 acts on the axis of arm 2, and then the problem avoiding due to excessive the caused crane system instability of the axial compression of arm 2, improve the lifting performance of hoisting crane.
Preferably, arm 2 is telescoping boom.The Applicable scope of telescoping boom is more extensively also more convenient for using, and due to arm 2 scalable, act on the impact that the stability of the axle pressure on arm 2 on arm produces also just larger, more need the pulling force of adjustment first draw-off mechanism 3 pairs of arms 2.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive 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.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a super lifting device for hoisting crane, this super lifting device comprises:
Surpassed support (4), this first end (41) having surpassed support (4) is for being arranged on the arm (2) of hoisting crane;
First draw-off mechanism (3), the first end of this first draw-off mechanism (3) is arranged on described the second end (42) place having surpassed support (4), and the second end of described first draw-off mechanism (3) is used for first end (21) place being arranged on described arm (2);
Second draw-off mechanism (5), the first end of this second draw-off mechanism (5) is arranged on described the second end (42) place having surpassed support (4), second end of described second draw-off mechanism (5) is for installing the second end (22) place be arranged on hoisting crane of described arm (2), or, second end of described second draw-off mechanism (5) is for being arranged on the turntable (1) of hoisting crane
It is characterized in that, described super lifting device also comprises adjusting mechanism (6), and this adjusting mechanism (6) can adjust the length of described second draw-off mechanism (5) to adjust the tensioning degree of described second draw-off mechanism (5).
2. the super lifting device of hoisting crane according to claim 1, it is characterized in that, described second draw-off mechanism (5) comprises first installing mechanism at the first end place being arranged on described second draw-off mechanism (5), the second installing mechanism being arranged on the second end place of described second draw-off mechanism (5) and the tractive main body be connected between described first installing mechanism and described second installing mechanism, and described adjusting mechanism (6) can adjust the length of described tractive main body.
3. the super lifting device of hoisting crane according to claim 2, is characterized in that, described adjusting mechanism (6) is arranged between described tractive main body and described first installing mechanism.
4. the super lifting device of hoisting crane according to claim 2, is characterized in that, described adjusting mechanism (6) is arranged between described tractive main body and described second installing mechanism.
5. the super lifting device of hoisting crane according to claim 2, is characterized in that, described tractive main body is rope row or arm-tie.
6. the super lifting device of hoisting crane according to claim 1, is characterized in that, the described support (4) that surpassed is installed perpendicular to described arm (2).
7. according to the super lifting device of the hoisting crane in claim 1-6 described in any one, it is characterized in that, described adjusting mechanism (6) is hydraulic ram, described hydraulic ram is connected to first end and/or the second end place of described second draw-off mechanism, adjusts the length of described second draw-off mechanism with the stroke by adjusting described hydraulic ram.
8. a hoisting crane, the crane system that this hoisting crane comprises turntable (1) and is arranged on described turntable (1), it is characterized in that, described hoisting crane also comprises the super lifting device according to the hoisting crane in claim 1-7 described in any one, wherein, the first end (41) having surpassed support (4) is arranged on the arm (2) of crane boom system, second end of described first draw-off mechanism (3) is arranged on first end (21) place of described arm (2), the first end of described second draw-off mechanism (5) is arranged on described turntable (1).
9. a method of adjustment for the super lifting device of hoisting crane, described hoisting crane comprises turntable (1), be arranged on crane system on described turntable (1) and super lifting device, and described super lifting device comprises:
Surpassed support (4), this first end (41) having surpassed support (4) is arranged on described arm (2);
First draw-off mechanism (3), the first end of this first draw-off mechanism (3) is arranged on described the second end (42) place having surpassed support (4), and the second end of described first draw-off mechanism (3) is used for first end (21) place being arranged on described arm (2);
Second draw-off mechanism (5), the first end of this second draw-off mechanism (5) is arranged on described the second end (42) place having surpassed support (4), second end of described second draw-off mechanism (5) is used for the second end (22) place being arranged on hoisting crane being arranged on described arm (2), or, second end of described second draw-off mechanism (5) is for being arranged on the turntable (1) of hoisting crane
It is characterized in that, when the lifting performance of hoisting crane depends on the stability of the crane system of hoisting crane, extend the length of described second draw-off mechanism (5), to reduce described first draw-off mechanism (3) to the pulling force of described arm (2);
When the lifting performance of hoisting crane depends on the intensity of the crane system of hoisting crane, shorten the length of described second draw-off mechanism (5), to increase described first draw-off mechanism (3) to the pulling force of described arm (2).
10. the method for adjustment of the super lifting device of hoisting crane according to claim 9, is characterized in that, described arm (2) is telescoping boom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996325.4A CN105439007A (en) | 2015-12-28 | 2015-12-28 | Super-lifting device of crane, adjusting method of super-lifting device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996325.4A CN105439007A (en) | 2015-12-28 | 2015-12-28 | Super-lifting device of crane, adjusting method of super-lifting device and crane |
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| Publication Number | Publication Date |
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| CN105439007A true CN105439007A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510996325.4A Pending CN105439007A (en) | 2015-12-28 | 2015-12-28 | Super-lifting device of crane, adjusting method of super-lifting device and crane |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4976361A (en) * | 1988-03-23 | 1990-12-11 | Liebherr-Werk Ehingen Gmbh | Mobile crane comprising a telescopic boom |
| CN201301180Y (en) * | 2008-10-29 | 2009-09-02 | 徐州重型机械有限公司 | Super-lifting gear for telescopic booms and telescopic boom crane |
| CN101857176A (en) * | 2010-07-05 | 2010-10-13 | 三一汽车起重机械有限公司 | Super hoisting device and telescopic-boom hoisting equipment with same |
| CN102602827A (en) * | 2012-03-14 | 2012-07-25 | 中联重科股份有限公司 | Super-lifting device of crane and crane |
| CN203946815U (en) * | 2014-07-02 | 2014-11-19 | 中联重科股份有限公司 | Super-lifting device of crane and crane |
-
2015
- 2015-12-28 CN CN201510996325.4A patent/CN105439007A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4976361A (en) * | 1988-03-23 | 1990-12-11 | Liebherr-Werk Ehingen Gmbh | Mobile crane comprising a telescopic boom |
| CN201301180Y (en) * | 2008-10-29 | 2009-09-02 | 徐州重型机械有限公司 | Super-lifting gear for telescopic booms and telescopic boom crane |
| CN101857176A (en) * | 2010-07-05 | 2010-10-13 | 三一汽车起重机械有限公司 | Super hoisting device and telescopic-boom hoisting equipment with same |
| CN102602827A (en) * | 2012-03-14 | 2012-07-25 | 中联重科股份有限公司 | Super-lifting device of crane and crane |
| CN203946815U (en) * | 2014-07-02 | 2014-11-19 | 中联重科股份有限公司 | Super-lifting device of crane and crane |
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Application publication date: 20160330 |