CN109132896B - Auxiliary boom lifting device and crane - Google Patents
Auxiliary boom lifting device and crane Download PDFInfo
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- CN109132896B CN109132896B CN201811324648.9A CN201811324648A CN109132896B CN 109132896 B CN109132896 B CN 109132896B CN 201811324648 A CN201811324648 A CN 201811324648A CN 109132896 B CN109132896 B CN 109132896B
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- boom
- guide piece
- guide
- auxiliary
- traction
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- 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
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
- B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions
- B66C23/828—Bracing equipment acting at an inclined angle to vertical and horizontal directions where the angle is adjustable
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- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The application relates to the technical field of engineering machinery, especially, relate to an auxiliary boom raising device and hoist, include: the support mast, the first guide piece, the second guide piece, the third guide piece, the traction rope and the traction piece; one end of the supporting arm is hinged with the side surface of a cargo boom of the crane, the other end of the supporting arm is provided with the first guide piece, and the traction piece is arranged on the supporting arm; the second guide piece is arranged on a rotary table of the crane, the third guide piece is arranged at one end of the cargo boom far away from the rotary table, and the first guide piece, the second guide piece and the third guide piece are distributed in a triangular shape; one end of the traction rope is connected with the traction piece, and the other end of the traction rope sequentially bypasses the second guide piece, the first guide piece and the third guide piece and is connected to the support mast. The application provides an auxiliary boom raising device and a crane, which aim to solve the technical problem that a boom can not be raised by a luffing cylinder only after a boom is too heavy and particularly an overlong auxiliary boom is connected.
Description
Technical Field
The application relates to the technical field of engineering machinery, in particular to an auxiliary boom raising device and a crane.
Background
With the rapid development of economic construction in China, the market demand for large-tonnage cranes is increasing day by day. Particularly, in the process of building and maintaining new energy facilities such as wind power, nuclear power and the like, the function of the large-tonnage and even ultra-large-tonnage mobile crane is particularly prominent.
However, with the increase of the tonnage of the mobile crane, especially the requirement of wind power overhaul installation height and weight is met, the lifting capacity of the crane boom is enhanced, the length and the section of the crane boom are increased, and the weight of the crane boom is heavier; with the development of the current wind power market, the maintenance and installation heights of the fan are continuously increased, the length of the auxiliary arm connected with the main crane boom is also longer, and the crane boom and the auxiliary arm which are continuously increased in weight bring great difficulty to the crane boom.
In order to avoid the ultrahigh finished vehicle, the crane jib needs to be arranged on two sides of the jib when the crane jib is lifted by the thrust of the luffing cylinder of the main jib, but the regulation requires that the width of the finished vehicle cannot exceed 3m, that is, the larger the cross section of the jib is, the more limited the space for arranging the luffing cylinders of the main jib on two sides is, so that the cylinder diameter of the luffing cylinder of the main jib is limited, the luffing thrust provided by the luffing cylinder is limited, and the limitation is brought to the jib lifting. Particularly, in many occasions, the requirement of lifting height and lifting weight, such as wind power installation and maintenance, needs to be connected with an overlong auxiliary arm, but the connection of the overlong auxiliary arm causes that the crane arm is too heavy to lift.
Disclosure of Invention
The application provides an auxiliary boom raising device and a crane, which aim to solve the technical problem that a boom can not be raised by a luffing cylinder only after the boom is too heavy at present and is particularly connected with an overlong auxiliary boom.
In order to achieve the purpose, the following technical scheme is adopted in the application:
one aspect of the present application provides an auxiliary jib device for a crane, comprising: the support mast, the first guide piece, the second guide piece, the third guide piece, the traction rope and the traction piece;
one end of the supporting mast is used for being connected with a cargo boom of the crane, the other end of the supporting mast is provided with the first guide piece, and the traction piece is arranged on the supporting mast;
the second guide piece is used for being installed on a rotary table of the crane, the third guide piece is used for being installed at one end, far away from the rotary table, of the cargo boom, and the first guide piece, the second guide piece and the third guide piece are distributed in a triangular mode;
one end of the traction rope is connected with the traction piece, and the other end of the traction rope sequentially bypasses the second guide piece, the first guide piece and the third guide piece and is used for being connected with the support mast.
Preferably, the auxiliary boom raising device further comprises a super-lift pre-tightening oil cylinder, one end of the traction rope is connected with the traction piece, and the other end of the traction rope is connected with the super-lift pre-tightening oil cylinder.
The technical scheme has the beneficial effects that: before the auxiliary arm lifting device provided by the embodiment of the application performs auxiliary arm lifting work, the traction rope and the guide pieces are pre-tightened in a matching mode, and the problem that the traction rope and the guide pieces are separated due to the fact that the traction rope and the guide pieces are not tightly matched when the auxiliary arm lifting device works is solved.
Preferably, the super-lift pre-tightening oil cylinder is located between the first guide piece and the traction piece, and the super-lift pre-tightening oil cylinder is hinged to the support mast.
The technical scheme has the beneficial effects that: because the supporting mast is generally longer, the middle part of the crane boom can be partially not fully utilized, and the structure of the supporting mast can be fully utilized by installing the super-lift pre-tightening oil cylinder between the first guide piece and the traction piece.
This technical scheme is still a neotype super mechanism of rising, guarantees under the heavy property prerequisite of hanging of jib loading boom, can also improve the condition of stretching out the indiscriminate rope of arm in-process wire rope, because the interval undersize of traction piece and pulley, the rope declination is too big, easily arouses the rope skipping of stretching out the arm in-process, indiscriminate rope scheduling problem, increases behind the first guide, especially when this first guide is the direction fixed pulley, the rope declination reduces greatly.
Preferably, the transmission direction of the super-lifting pre-tightening oil cylinder is the length direction of the supporting mast.
The technical scheme has the beneficial effects that: the super-lift pre-tightening oil cylinder is guided and fixed, and the transmission rod of the super-lift pre-tightening oil cylinder can be prevented from extending out of the support mast, so that the accidents of collision and the like caused by contact with other parts of the crane are avoided.
Preferably, the support mast is articulated with the jib.
The technical scheme has the beneficial effects that: when the support mast is installed, the support mast is in a state of being lifted above the crane boom, and the super-lifting amplitude-variable oil cylinder is used for changing amplitude to a vertical state, so that the effect of the crane boom moment is optimal.
Preferably, the crane further comprises a super-lifting luffing cylinder, and two ends of the super-lifting luffing cylinder are respectively hinged with the supporting mast and the crane boom so as to drive the supporting mast to rotate relative to the crane boom.
The technical scheme has the beneficial effects that: through the setting of this super luffing cylinder, the convenient relative jib loading boom pivoted automatic control to the support mast to can also provide certain support to the support mast through this super luffing cylinder.
Preferably, the traction member comprises a reduction motor and a hoisting mechanism connected to each other.
The technical scheme has the beneficial effects that: the effect of increasing the moment and reducing the speed can be achieved through the speed reducing motor, the winding and unwinding of the traction rope can be achieved through the winding mechanism, and therefore good traction power is provided for the traction rope.
Preferably, the rotary table has a first connecting end and a second connecting end, the boom is used for being connected with the first connecting end, the second connecting end is an end of the rotary table, the end is far away from the boom, and the second guide member is used for being mounted on the second connecting end.
The technical scheme has the beneficial effects that: the second connecting end is preferably the end of the swivel that is furthest from the jib in the horizontal direction.
Preferably, the first guide, the second guide and the third guide are fixed pulleys.
The technical scheme has the beneficial effects that: only sliding friction is generated between the traction rope and the fixed pulley through the fixed pulley, so that the friction force borne by the traction rope is reduced to the maximum extent; and the price of the fixed pulley is relatively low, and the structure is simple and convenient to install.
Another aspect of the present application provides a crane, comprising a boom, a turntable, and the above-mentioned auxiliary boom apparatus.
The technical scheme provided by the application can achieve the following beneficial effects:
through the auxiliary jib lifting device and the crane provided by the embodiment of the application, the problem that the crane cannot lift the jib by the luffing cylinder alone due to the fact that the existing jib is heavy and especially connected with the overlong extension auxiliary jib is effectively solved.
Additional features of the present application and advantages thereof will be set forth in the description which follows, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It should be apparent that the drawings in the following description are embodiments of the present application and that other drawings may be derived from those drawings by a person of ordinary skill in the art without inventive step.
Fig. 1 is a schematic structural diagram of a crane provided in an embodiment of the present application;
FIG. 2 is a schematic structural view of the first guide member and the super lift device according to the present disclosure;
FIG. 3 is a schematic perspective view of a first guide member and a super lift apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic view of a connection structure between the turntable, the crane arm and the second guide member according to an embodiment of the present disclosure.
Reference numerals:
1-a traction rope;
2-a turntable;
21-a first connection end;
22-a second connection end;
3-main arm variable amplitude oil cylinder;
4-a crane boom;
41-main boom;
42-auxiliary boom;
51-a support mast;
52-a connector;
53-super amplitude cylinder;
54-super-lifting pre-tightening oil cylinder;
55-a traction member;
6-super-lifting a pulling plate;
7-a second guide;
8-a first guide;
9-third guide.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and 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 thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 to 4, one aspect of the present application provides an auxiliary boom apparatus for a crane, comprising: a support mast 51, a first guide 8, a second guide 7, a third guide 9, a pull rope 1 and a pull member 55;
one end of the support mast 51 is used for being connected with a crane arm 4 of a crane, the other end is provided with a first guide part 8, and a traction part 55 is arranged on the support mast 51;
the second guide part 7 is used for being installed on the rotary table 2 of the crane, the third guide part 9 is used for being installed at one end, far away from the rotary table 2, of the crane arm 4, and the first guide part 8, the second guide part 7 and the third guide part 9 are distributed in a triangular shape;
one end of the traction rope 1 is connected to the traction member 55, and the other end thereof passes around the second guide 7, the first guide 8, and the third guide 9 in this order and is used for connection to the support mast 51.
In particular, the hauling rope 1 may preferably be a steel rope; a superlift pulling plate 6 can be preferably connected between the support mast 51 and the rotary table 2; a connecting frame for mounting the third guide part 9 can be preferably arranged at one end of the crane arm 4 far away from the rotary table 2; when the boom 4 includes a main boom 41 connected to the turntable 2, and a sub boom 42 connected to the main boom 41, the support mast 51 is preferably installed on the main boom 41.
When the jib is lifted, the traction piece 55 of the auxiliary jib lifting device drives the traction rope 1 to assist the jib lifting process, after the jib 4 is lifted to a certain angle, the jib can be lifted independently by the jib luffing oil cylinder 3, and the traction piece 55 does not need to perform auxiliary work any more; after the hoisting task is completed, in the process of receiving the vehicle and dropping the boom, when the boom 4 drops the boom to a corresponding angle, the auxiliary boom raising device starts the traction piece 55 to start the auxiliary work until the boom 4 is dropped or the boom is groveled.
The auxiliary jib lifting device effectively solves the problem that the crane can not lift the jib by only depending on the main jib luffing cylinder 3 because the weight of the existing jib 4 is large.
In order to avoid the problem that before the auxiliary boom raising device provided by the embodiment of the application performs auxiliary boom raising, the traction piece 55 is not tightly matched with each guide piece due to the fact that the traction rope 1 is loose, and when the auxiliary boom raising is performed, the traction rope 1 is stressed and can slide relative to each guide piece to be separated, preferably, the auxiliary boom raising device further comprises a super-lift pre-tightening oil cylinder 54, one end of the traction rope 1 is connected with the traction piece 55, and the other end of the traction rope 1 is connected with the super-lift pre-tightening oil cylinder 54. Before the auxiliary arm lifting device provided by the embodiment of the application performs auxiliary arm lifting work, the traction rope 1 and each guide piece are pre-tightened in a matched mode, and therefore the problem that the traction rope 1 and each guide piece are separated due to the fact that the traction rope 1 and each guide piece are not tightly matched when the auxiliary arm lifting device works is avoided.
In order to make full use of the self structure of the support mast 51, preferably, the super-lift pre-tightening cylinder 54 is located between the first guide member 8 and the traction member 55, one end of the super-lift pre-tightening cylinder 54 is hinged to the support mast 51, the other end of the super-lift pre-tightening cylinder 54 is connected with the rope head of the traction rope 1, and when the traction rope 1 is a steel rope, the other end of the super-lift pre-tightening cylinder 54 is connected with the rope head of the steel rope. Since the support mast 51 is generally long and part of the middle part of the boom 4 is not fully utilized, the structure of the support mast 51 can be fully utilized by installing the super lift pretensioning cylinder 54 between the first guide member 8 and the pulling member 55.
Moreover, on the premise of ensuring the hoisting performance of the crane boom 5, the disorder of the steel wire rope in the boom extending process can be improved, the problems of rope skipping, disorder of the rope and the like in the boom extending process are easily caused due to the fact that the distance between the traction piece 55 and the pulley is too small and the rope deflection angle is too large, and after the first guide piece is added, particularly when the first guide piece 8 is the guide fixed pulley, the rope deflection angle is greatly reduced.
In order to provide sufficient space around the support mast 51 for other structures of the crane when the super-lift pre-tightening cylinder 54 is used, the transmission direction of the super-lift pre-tightening cylinder 54 is preferably the length direction of the support mast 51. The super-lift pre-tightening oil cylinder 54 is guided and fixed, and the driving rod of the super-lift pre-tightening oil cylinder 54 can be prevented from extending out of the support mast 51, so that accidents such as contact with other parts of the crane, collision and the like are avoided.
In order to properly adjust the magnitude of the jib lifting moment provided by the auxiliary jib lifting device provided in the embodiment of the present application, the support mast 51 is preferably hinged to the jib 4. When the support mast 51 is installed, the support mast is in a state of being lifted above the jib 4, and the jib-lifting moment effect is optimal by means of the amplitude variation of the super amplitude variation oil cylinder 53 to be in a vertical state.
In order to realize automatic control of rotation of the support mast 51 relative to the boom 4, preferably, the auxiliary boom raising device provided in the embodiment of the present application further includes a super-lift luffing cylinder 53, and two ends of the super-lift luffing cylinder 53 are respectively hinged to the support mast 51 and the boom 4 to drive the support mast 51 to rotate relative to the boom 4. Through the arrangement of the super-lifting luffing cylinder 53, the rotation of the supporting mast 51 relative to the crane boom 4 can be automatically controlled conveniently, and a certain support can be provided for the supporting mast 51 through the super-lifting luffing cylinder 53. Preferably, the support mast 51 is hinged on the jib 4 by means of a link 52.
In order for the auxiliary boom raising apparatus provided in the embodiment of the present application to provide traction power to the traction rope 1 through the traction member 55, preferably, the traction member 55 includes a reduction motor and a hoisting mechanism connected to each other. The effect of increasing the moment and reducing the speed can be achieved through the speed reducing motor, the winding and unwinding of the traction rope 1 can be achieved through the winding mechanism, and then better traction power is provided for the traction rope 1.
In order to increase the force arm corresponding to the force of the auxiliary boom unit acting on the boom 4 as much as possible, the turntable 2 preferably has a first connection end 21 and a second connection end 22, the boom 4 being intended to be connected to the first connection end 21, the second connection end 22 being the end of the turntable 2 located remote from the boom 4, and the second guide 7 being intended to be mounted on the second connection end 22. The second attachment end 22 is preferably the end of the turret 2 furthest from the jib 4 in the horizontal direction. The turntable 2 is preferably detachable, thereby facilitating transportation of the turntable 2.
In order to provide better guidance for the movement of the traction rope 1 and to reduce the friction experienced by the traction rope 1, the first guide 8, the second guide 7 and the third guide 9 are fixed pulleys. Only sliding friction is generated between the traction rope 1 and the fixed pulley through the fixed pulley, so that the friction force borne by the traction rope 1 is reduced to the maximum extent; and the price of the fixed pulley is relatively low, and the structure is simple and convenient to install.
Another aspect of the present application provides a crane comprising a boom 4, a turntable 2 and the above-mentioned auxiliary boom apparatus.
When the crane provided by the embodiment of the application uses the auxiliary boom raising device, the problem that the crane cannot raise the boom by only depending on the main boom luffing cylinder 3 due to the fact that the weight of the current boom 4 is large is effectively solved.
The auxiliary boom raising device in the embodiment of the present application includes a super-lift device, which includes at least a support mast 51, a connecting member 52, a towing member 55, a super-lift luffing cylinder 53, and a super-lift pretensioning cylinder 54.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Furthermore, those skilled in the art will appreciate that while some of the embodiments described above include some features included in other embodiments, rather than others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. Additionally, the information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (8)
1. Auxiliary jib device, characterized in that auxiliary jib device is used for the hoist, includes: the support mast, the first guide piece, the second guide piece, the third guide piece, the traction rope and the traction piece;
one end of the supporting mast is used for being connected with a cargo boom of the crane, the other end of the supporting mast is provided with the first guide piece, and the traction piece is arranged on the supporting mast;
the second guide piece is used for being installed on a rotary table of the crane, the third guide piece is used for being installed at one end, far away from the rotary table, of the cargo boom, and the first guide piece, the second guide piece and the third guide piece are distributed in a triangular mode;
the auxiliary arm lifting device also comprises a super-lifting pre-tightening oil cylinder, wherein one end of the traction rope is connected with the traction piece, and the other end of the traction rope sequentially bypasses the second guide piece, the first guide piece and the third guide piece and is used for being connected with the super-lifting pre-tightening oil cylinder;
the super-lift pre-tightening oil cylinder is located between the first guide piece and the traction piece, and the super-lift pre-tightening oil cylinder is hinged to the support mast.
2. The auxiliary boom apparatus of claim 1, wherein the transmission direction of the super lift pretension cylinder is the length direction of the support mast.
3. The auxiliary boom apparatus of claim 1, wherein said support mast is articulated with said boom.
4. The auxiliary boom raising device of claim 3, further comprising a super-lifting luffing cylinder, wherein two ends of the super-lifting luffing cylinder are respectively hinged to the support mast and the boom so as to drive the support mast to rotate relative to the boom.
5. The auxiliary boom apparatus of claim 1, wherein the traction member comprises a reduction motor and a hoisting mechanism connected to each other.
6. The auxiliary boom apparatus of claim 1, wherein the turntable has a first connection end and a second connection end, the boom is adapted to be connected to the first connection end, the second connection end is an end of the turntable located away from the boom, and the second guide is adapted to be mounted on the second connection end.
7. The auxiliary boom apparatus of claim 1, wherein the first guide, the second guide and the third guide are fixed pulleys.
8. Crane, characterized in that it comprises a boom, a turntable and an auxiliary boom device according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324648.9A CN109132896B (en) | 2018-11-08 | 2018-11-08 | Auxiliary boom lifting device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324648.9A CN109132896B (en) | 2018-11-08 | 2018-11-08 | Auxiliary boom lifting device and crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109132896A CN109132896A (en) | 2019-01-04 |
| CN109132896B true CN109132896B (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811324648.9A Active CN109132896B (en) | 2018-11-08 | 2018-11-08 | Auxiliary boom lifting device and crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111217255A (en) * | 2020-03-02 | 2020-06-02 | 三一汽车起重机械有限公司 | Crane upright post assembly and crane |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20020974U1 (en) * | 2000-12-12 | 2002-04-25 | Liebherr-Werk Ehingen Gmbh, 89584 Ehingen | mobile crane |
| JP2006206233A (en) * | 2005-01-27 | 2006-08-10 | Tadano Ltd | Telescopic boom horizontal deflection restricting device for travelling crane |
| CN203715125U (en) * | 2013-12-17 | 2014-07-16 | 徐州重型机械有限公司 | Crane as well as guying device thereof |
| DE102015002626A1 (en) * | 2015-03-03 | 2016-09-08 | Liebherr-Werk Ehingen Gmbh | Telescopic boom of a crane and method for its bracing, as well as for erecting telescopic extensions |
| CN106429905A (en) * | 2016-10-20 | 2017-02-22 | 太原重型机械集团工程技术研发有限公司 | Crane and superlift device thereof |
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