CN115849216A - Crane boom device and crane - Google Patents
Crane boom device and crane Download PDFInfo
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- CN115849216A CN115849216A CN202211640266.3A CN202211640266A CN115849216A CN 115849216 A CN115849216 A CN 115849216A CN 202211640266 A CN202211640266 A CN 202211640266A CN 115849216 A CN115849216 A CN 115849216A
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Abstract
The invention relates to a crane boom device and a crane, wherein the crane boom device comprises a crane boom (1), a pulling plate and a waist rope assembly, the crane boom (1) is used for lifting heavy objects, the crane boom (1) comprises a first connecting part and a second connecting part, the pulling plate is connected between a supporting part of the crane and a boom head of the crane boom (1), the pulling plate comprises a third connecting part and a fourth connecting part, the waist rope assembly is connected between the crane boom (1) and the pulling plate, the waist rope assembly comprises a first pulley (2), a second pulley (3) and a connecting rope (4), the connecting rope (4) is matched with the first pulley (2) and the second pulley (3), two ends of the connecting rope (4) are respectively connected with the first connecting part and the second connecting part, and the first pulley (2) and the second pulley (3) are respectively connected with the third connecting part and the fourth connecting part. The crane comprises the crane boom device.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a crane boom device and a crane.
Background
With the development of crawler cranes, in large mechanical construction sites, the working conditions of the ultra-long arm are more and more widely applied, but the working conditions of the ultra-long arm all face the problems of overlarge boom deflection and limited performance.
In order to improve the deflection of the whole arm support and improve the performance of the arm support, a method of adding a waist rope device is often adopted, and the pull plate/pull rope is connected with the dangerous section of the arm support by the waist rope device, so that the stress of the arm support can be improved. However, in consideration of cost and installation convenience, there are several problems in the related art: (1) The problem of interference between the balance beam and the arm support and the steel wire rope cannot be effectively solved; (2) The problem that the length compensation of the waist rope is insufficient due to the overlong arm frame cannot be solved; (3) The problem of different waist rope forces on two sides caused by the fact that the lengths of the waist rope chains are different and the assembly heights of the two sides of the pulling plate are different cannot be solved, and side loading is easily caused.
It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention 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.
Disclosure of Invention
The invention provides a crane boom device and a crane, which can avoid the phenomenon of side loading of a crane boom.
According to an aspect of the invention, there is provided a crane boom apparatus comprising:
the crane boom is used for lifting a heavy object and comprises a first connecting part and a second connecting part;
the pulling plate is connected between the supporting part of the crane and the boom head of the crane boom and comprises a third connecting part and a fourth connecting part; and
waist rope assembly connects between jib loading boom and arm-tie, and waist rope assembly includes first pulley, second pulley and connects the rope, connects rope and first pulley and the cooperation of second pulley, and connects the both ends of rope and be connected with first connecting portion and second connecting portion respectively, and first pulley and second pulley are connected with third connecting portion and fourth connecting portion respectively.
In some embodiments, a distance between the first connection portion and the second connection portion is greater than a distance between the third connection portion and the fourth connection portion.
In some embodiments, a line connecting the first connection portion, the second connection portion, the third connection portion, and the fourth connection portion forms an isosceles trapezoid.
In some embodiments, the waist rope assembly further comprises a length adjusting member, the length adjusting member is connected between one end of the connecting rope and the crane arm, or the length adjusting member is connected in series between two adjacent rope segments of the connecting rope, and the length of the length adjusting member in the extending direction of the connecting rope is adjustable.
In some embodiments, the length of the length-adjusting member varies with the force applied to the length-adjusting member itself in the extending direction of the connecting cord.
In some embodiments, the waist cord assembly further comprises a first connecting member connected between the first pulley and the third connecting portion and a second connecting member connected between the second pulley and the fourth connecting portion.
In some embodiments, the first connector is hinged to the third connector; the second connecting piece is hinged with the fourth connecting part.
In some embodiments, the waist cord assembly further comprises a third connecting member connected between one end of the connecting cord and the first connecting portion, and a fourth connecting member connected between the other end of the connecting cord and the second connecting portion.
In some embodiments, the third connector includes a shackle connected to the first connector and the fourth connector includes a shackle connected to the second connector.
According to another aspect of the invention, a crane is provided, which comprises the crane boom device.
Based on the technical scheme, the waist rope assembly connected between the crane boom and the pulling plate is arranged, the deflection of the crane boom can be reduced, the performance of the crane boom can be effectively improved, and the tension of the rope section of the connecting rope between the first connecting part and the third connecting part and the tension of the rope section between the second connecting part and the fourth connecting part are always kept consistent according to the principle that the fixed pulley only changes the direction of force and does not change the magnitude of force by matching the connecting rope with the first pulley and the second pulley, namely the first connecting part and the second connecting part of the crane boom are subjected to equal tension, so that the phenomenon of side load of the crane boom can be effectively avoided, and the working reliability and stability of the crane boom are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention.
In the drawings:
FIG. 1 is a schematic diagram of a boom and wale assembly of an embodiment of a crane boom assembly of the present invention;
FIG. 2 is a schematic diagram of a configuration of a wale assembly in an embodiment of the crane boom apparatus of the present invention;
fig. 3 shows a schematic structural diagram of a waist rope assembly in another embodiment of the crane boom device of the invention.
In the figure:
1. a cargo boom; 2. a first pulley; 3. a second pulley; 4. connecting ropes; 5. a length adjustment member; 6. a first connecting member; 7. a second connecting member; 8. a third connecting member; 9. and a fourth connecting piece.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.
Referring to fig. 1 and 2, in some embodiments of the crane boom assembly provided by the present invention, the crane boom assembly includes a boom 1, a pulling plate, and a wale assembly. The crane boom 1 is used for lifting a heavy object, the crane boom 1 comprises a first connecting part and a second connecting part, the pulling plate is connected between the supporting part of the crane and the boom head of the crane boom 1, the pulling plate comprises a third connecting part and a fourth connecting part, the waist rope assembly is connected between the crane boom 1 and the pulling plate, the waist rope assembly comprises a first pulley 2, a second pulley 3 and a connecting rope 4, the connecting rope 4 is matched with the first pulley 2 and the second pulley 3, two ends of the connecting rope 4 are respectively connected with the first connecting part and the second connecting part, and the first pulley 2 and the second pulley 3 are respectively connected with the third connecting part and the fourth connecting part.
Through the waist rope assembly connected between the crane boom 1 and the pull plate, the deflection of the crane boom 1 can be reduced, and the performance of the crane boom 1 is effectively improved.
In the above embodiment, the connection rope 4 is a flexible rope, the first pulley 2 and the second pulley 3 are fixed pulleys, and the connection rope 4 is matched with the first pulley 2 and the second pulley 3, so that the tension of the rope section of the connection rope 4 between the first connection part and the third connection part and the tension of the rope section of the connection rope 4 between the second connection part and the fourth connection part are always consistent according to the principle that the fixed pulleys only change the direction of force and do not change the magnitude of force, that is, the first connection part and the second connection part of the boom 1 are subjected to equal tension, thereby effectively avoiding the side load phenomenon of the boom 1 and improving the working reliability and stability of the boom 1.
The arrangement positions of the first connecting part and the second connecting part of the crane boom 1 and the third connecting part and the fourth connecting part of the pull plate are selected in various ways, so long as the stress condition of the crane boom 1 can be improved, the deflection of the crane boom 1 can be reduced, and the waist rope assembly is ensured not to interfere with the related structures of the crane boom 1 and the pull plate.
In some embodiments, the width of the pulling plate is smaller than that of the boom 1, the first connecting portion and the second connecting portion are respectively disposed on the trusses on both sides of the boom 1 in the width direction, the third connecting portion and the fourth connecting portion are respectively disposed on both ends of the pulling plate in the width direction, and as shown in fig. 1, the distance between the first connecting portion and the second connecting portion is larger than the distance between the third connecting portion and the fourth connecting portion.
Referring to fig. 1, in some embodiments, a line connecting the first connection portion, the second connection portion, the third connection portion, and the fourth connection portion forms an isosceles trapezoid.
In the above-described embodiment, the line between the first connecting portion and the second connecting portion is parallel to the line between the third connecting portion and the fourth connecting portion, and since the connecting cord 4 can slide relative to the first pulley 2 and the second pulley 3, the length of the cord section of the connecting cord 4 between the first connecting portion and the third connecting portion and the length of the cord section of the connecting cord 4 between the second connecting portion and the fourth connecting portion can be always kept the same under the force.
From mechanical structure analysis, the force from the connecting rope 4 on the first pulley 2 and the second pulley 3 can be decomposed into a vertical force and a horizontal force, wherein the vertical force can be balanced with the pulling force applied by the third connecting part and the fourth connecting part, and the horizontal forces on the first pulley 2 and the second pulley 3 are equal in magnitude and opposite in direction, so that self-balance can be realized. Similarly, the stress at other positions of the isosceles trapezoid structure can be analyzed by the above method, so that the isosceles trapezoid structure can realize self-balanced stress, and a stable force system is formed, thereby having strong structural stability.
Referring to fig. 3, in some embodiments, the waist rope assembly further includes a length adjusting member 5, the length adjusting member 5 is connected between one end of the connecting rope 4 and the boom 1, or the length adjusting member 5 is connected in series between two adjacent rope segments of the connecting rope 4, and the length of the length adjusting member 5 in the extending direction of the connecting rope 4 is adjustable.
The length of the connecting rope 4 can be changed by arranging the length adjusting piece 5, namely changing the length of the length adjusting piece 5, so that the waist rope component can adapt to the changes of working conditions such as the change of the relative position between the pulling plate and the crane boom 1, the change of the length of the crane boom 1 and the like, and the crane boom device can be applied to different construction environments and meet the construction requirements of different working conditions.
In the above embodiment, the length adjusting member 5 may be a pulling plate, a pulling cable, a spring member, a chain, a damper, an oil cylinder or an air cylinder, or other devices capable of changing the length.
In some embodiments, the length of the length-adjusting member 5 varies with the force applied to it in the extending direction of the connecting string 4.
The length of the length adjusting piece 5 is set to change along with the change of the self-stress, so that the self-adjusting and self-balancing effects are achieved, the crane boom 1 can be always in a safe and stable state in the working process, and the working reliability of the crane boom device is effectively improved.
Referring to fig. 2, in some embodiments, the waist belt assembly further comprises a first link 6 and a second link 7, the first link 6 being connected between the first pulley 2 and the third connecting portion, and the second link 7 being connected between the second pulley 3 and the fourth connecting portion.
Through setting up first connecting piece 6 and second connecting piece 7 and being connected the third connecting portion and the fourth connecting portion of waist rope subassembly and arm-tie, be convenient for through installing and removing, remove first connecting piece 6 and second connecting piece 7 and realize the adjustment of waist rope subassembly for the position of arm-tie, be favorable to carrying on operations such as maintenance, the change of waist rope subassembly.
In some embodiments, the first connection 6 is hinged to the third connection; the second connecting piece 7 is hinged with the fourth connecting part.
By arranging the first connecting piece 6 and the second connecting piece 7 to be hinged with the third connecting part and the fourth connecting part respectively, when the stress condition of the waist rope assembly changes, the first connecting piece 6 and the second connecting piece 7 can rotate relative to the pull plate, so that the crane boom device provided by the invention is favorably adjusted to a new balance position, and the damage of bending, cracking and the like caused by stress change among all the parts can be effectively avoided.
In some embodiments, the waist belt assembly further comprises a third connecting member 8 and a fourth connecting member 9, the third connecting member 8 being connected between one end of the connecting rope 4 and the first connecting portion, and the fourth connecting member 9 being connected between the other end of the connecting rope 4 and the second connecting portion.
The waist rope assembly is connected with the first connecting part and the second connecting part of the crane boom 1 through the third connecting part 8 and the fourth connecting part 9, so that the position of the waist rope assembly relative to the crane boom 1 can be adjusted conveniently by assembling, disassembling and moving the third connecting part 8 and the fourth connecting part 9, and the operation of maintenance, replacement and the like of the waist rope assembly is facilitated.
The structural form of the third connecting piece 8 and the fourth connecting piece 9 can be selected in many ways, as long as the stability of connection and the convenience of assembly and disassembly are ensured.
Referring to fig. 2, in some embodiments, the third connector 8 comprises a shackle connected to the first connector and the fourth connector 9 comprises a shackle connected to the second connector.
The following describes a specific structure of an embodiment of the crane boom device of the present invention:
referring to fig. 1 to 3, the crane boom device of the present invention includes a crane boom 1, a pulling plate and a waist rope assembly, wherein the crane boom 1 includes a first connecting portion and a second connecting portion, the pulling plate includes a third connecting portion and a fourth connecting portion, and the waist rope assembly includes a first pulley 2, a second pulley 3, a connecting rope 4, a length adjusting member 5, a first connecting member 6, a second connecting member 7, a third connecting member 8 and a fourth connecting member 9.
In this embodiment, the third connecting member 8 and the fourth connecting member 9 are shackles, and the length adjusting member 5 may be an adjusting pulling plate, a pulling cable, a spring member, a chain, a damper, an oil cylinder or an air cylinder.
First connecting piece 6 is connected with the third connecting portion of first pulley 2 and arm-tie through the round pin axle, second connecting piece 7 is connected with the fourth connecting portion of second pulley 3 and arm-tie through the round pin axle, first pulley 2 and 3 homoenergetic free rotation of second pulley, it passes first pulley 2 and second pulley 3 respectively to connect rope 4, the one end of connecting rope 4 is connected with length adjustment spare 5, length adjustment spare 5 is connected with the first connecting portion of jib loading boom 1 through breaking out, the other end of connecting rope 4 is connected with the second connecting portion of jib loading boom 1 through breaking out.
Through the description of the embodiments of the crane jib device according to the invention, it can be seen that the crane jib device according to the invention has at least the following advantages:
(1) The waist rope assembly connected between the crane boom and the pull plate is arranged, so that the deflection of the crane boom can be reduced, and the performance of the crane boom is effectively improved;
(2) The connecting rope in the waist rope assembly is matched with the fixed pulley, so that the first connecting part and the second connecting part of the crane boom are always subjected to equal tension, the side load phenomenon of the crane boom can be effectively avoided, and the working reliability and stability of the crane boom are improved;
(3) The length adjusting piece is arranged, so that the waist rope assembly can adapt to the change of different working conditions, and the self-adjusting and self-balancing effects are achieved, so that the crane boom device can be applied to different construction environments, and the construction requirements of different working conditions are met.
Based on the crane boom device, the invention further provides a crane, and the crane comprises the crane boom device. The positive technical effects of the crane boom device in the above embodiments are also applicable to cranes, and are not described herein again.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made without departing from the principles of the invention, and these modifications and equivalents are intended to be included within the scope of the claims.
Claims (10)
1. A crane boom apparatus, comprising:
the crane boom (1) is used for lifting heavy objects, and the crane boom (1) comprises a first connecting part and a second connecting part;
the pulling plate is connected between a supporting part of the crane and the boom head of the crane boom (1), and comprises a third connecting part and a fourth connecting part; and
waist rope assembly, connect in jib loading boom (1) with between the arm-tie, waist rope assembly includes first pulley (2), second pulley (3) and connects rope (4), connect rope (4) with first pulley (2) with second pulley (3) cooperation, just connect the both ends of rope (4) respectively with first connecting portion with the second connecting portion are connected, first pulley (2) with second pulley (3) respectively with third connecting portion with the fourth connecting portion are connected.
2. The crane jib apparatus of claim 1, wherein a distance between the first connection and the second connection is greater than a distance between the third connection and the fourth connection.
3. The crane jib apparatus of claim 1 or 2, wherein a line connecting the first connection portion, the second connection portion, the third connection portion, and the fourth connection portion forms an isosceles trapezoid.
4. The crane jib device according to claim 1, wherein the waist rope assembly further comprises a length adjuster (5), the length adjuster (5) is connected between one end of the connecting rope (4) and the crane boom (1), or the length adjuster (5) is connected in series between two adjacent rope segments of the connecting rope (4), and the length of the length adjuster (5) in the extending direction of the connecting rope (4) is adjustable.
5. A crane jib arrangement as claimed in claim 4, wherein the length of the length adjuster (5) in the extension direction of the connecting rope (4) varies as a function of the force applied to it.
6. Crane jib arrangement according to claim 1 or 2, wherein the wale assembly further comprises a first connection member (6) and a second connection member (7), the first connection member (6) being connected between the first pulley (2) and the third connection portion, the second connection member (7) being connected between the second pulley (3) and the fourth connection portion.
7. The crane jib device according to claim 6, wherein the first connection member (6) is hinged with the third connection member; the second connecting piece (7) is hinged with the fourth connecting part.
8. Crane jib arrangement according to claim 1 or 2, wherein the wale rope assembly further comprises a third connection member (8) and a fourth connection member (9), the third connection member (8) being connected between one end of the connection rope (4) and the first connection portion, the fourth connection member (9) being connected between the other end of the connection rope (4) and the second connection portion.
9. Crane jib arrangement according to claim 8, wherein the third connection member (8) comprises a shackle connected to the first connection member and the fourth connection member (9) comprises a shackle connected to the second connection member.
10. A crane comprising a crane boom arrangement as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211640266.3A CN115849216A (en) | 2022-12-20 | 2022-12-20 | Crane boom device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211640266.3A CN115849216A (en) | 2022-12-20 | 2022-12-20 | Crane boom device and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115849216A true CN115849216A (en) | 2023-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211640266.3A Pending CN115849216A (en) | 2022-12-20 | 2022-12-20 | Crane boom device and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115849216A (en) |
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2022
- 2022-12-20 CN CN202211640266.3A patent/CN115849216A/en active Pending
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