CN103663190A - Cantilever crane and crane - Google Patents
Cantilever crane and crane Download PDFInfo
- Publication number
- CN103663190A CN103663190A CN201310690217.5A CN201310690217A CN103663190A CN 103663190 A CN103663190 A CN 103663190A CN 201310690217 A CN201310690217 A CN 201310690217A CN 103663190 A CN103663190 A CN 103663190A
- Authority
- CN
- China
- Prior art keywords
- arm
- reinforcing
- boom
- cantilever
- crane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005452 bending Methods 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 74
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Jib Cranes (AREA)
Abstract
The invention discloses a cantilever crane and a crane. The cantilever crane comprises a cantilever crane body and two reinforced cantilever cranes, wherein the cantilever crane body comprises an upper cantilever, a lower cantilever and at least one middle cantilever; the middle cantilever is arranged between the upper cantilever and the lower cantilever; the reinforced cantilever cranes are symmetrically mounted on two sides of the cantilever crane body in the length direction. According to the invention, as the reinforced cantilever cranes are arranged on two sides of the cantilever crane body, the rigidity, the stability in the side direction and the resistance to bending of the entire cantilever crane system are improved, and the stability and the stress of the cantilever crane are effectively improved so as to improve the loading capacity of the crane; in addition, the height of the original cantilever crane is not increased, and the requirement of transportation height can be met; moreover, a rotary table structure is not required to be changed, so that the cantilever crane is convenient to mount, suitable for various cranes and wide in application range.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a boom and a crane.
Background
The crane is an engineering machine capable of carrying out operations such as material lifting, transportation, loading and unloading, and is widely applied to the fields of buildings, traffic, ports, energy sources, irrigation and water conservancy and the like, particularly, for example, bridge construction, power generation equipment installation, shipbuilding, wind generating set erection and the like.
The crane usually comprises a power device, a working mechanism, a boom, a rotary table, a traveling device and the like. The arm support is mostly a truss arm structure, the lower end of the arm support is hinged to a platform on the rotary table, and the top of the arm support is suspended and supported by a variable-amplitude steel wire rope pulley block, so that the inclination angle of the arm support can be changed. Existing booms typically include: the length and the stability of the arm support are usually adjusted by increasing or decreasing the number of the middle arms.
The arm support is a key bearing structure of the crane, and the structure of the arm support has important influence on the bearing capacity of the crane. The existing arm support mostly adopts a truss arm single-arm form, and along with the lifting of the lifting capacity requirement of a crane, in order to ensure that the section size of the arm support meets the lifting capacity requirement on the premise of not exceeding the transportation limit, the lifting is only carried out from the aspects of the material specification and the material of the arm support, which is difficult to realize. In order to solve the problem, a double-arm frame system is adopted on a large-tonnage crane in the prior art, namely two parallel or herringbone arm frames are adopted. However, the structure greatly changes the design of the rotary table of the traditional crane, so that the rotary table has a complex structure and is inconvenient to install and not suitable for large-tonnage crawler cranes.
Disclosure of Invention
In view of the above, the invention provides a boom and a crane with strong loading capacity and wide application range.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
in one aspect, the present invention provides an arm support, including: the arm support comprises an arm support main body and a reinforcing arm support; the arm support main body comprises: an upper knuckle arm, a lower knuckle arm, and at least one section of a middle arm located between the upper knuckle arm and the lower knuckle arm; the reinforcing arm supports are symmetrically arranged on two sides of the arm support main body along the length direction.
Furthermore, the tail ends of the reinforcing arm supports are arranged on two sides of the lower knuckle arm or two sides of a middle arm connected with the lower knuckle arm.
Further, the reinforcing arm support includes: the device comprises a head end reinforcing arm, a tail end reinforcing arm and at least one section of middle reinforcing arm positioned between the head end reinforcing arm and the tail end reinforcing arm; the tail end reinforcing arms are arranged on two sides of the lower section arm or arranged on two sides of a middle arm connected with the lower section arm.
Further, the head end reinforcing arms are mounted on two sides of the upper section arm, or mounted on two sides of a middle arm connected with the upper section arm.
Furthermore, the head end surface of the head end reinforcing arm is an inclined surface inclined towards the tail end reinforcing arm; the tail end face of the tail end reinforcing arm is an inclined plane inclined towards the head end reinforcing arm.
Furthermore, the reinforcing arm support is connected with the arm support main body through a pin shaft.
Further, the reinforced arm support is of a truss arm structure or a box-type beam structure; and/or the arm support main body is a truss arm connection structure or a box-type beam structure.
Further, the section of the reinforcing arm support is rectangular or triangular.
Further, the reinforcing arm support is of a steel pipe welding structure; or the reinforcing arm support is of an angle steel, rectangular pipe, square pipe or steel plate bending structure.
The invention also provides a crane which is provided with the arm support.
The invention provides an arm support which comprises an arm support main body and reinforcing arm supports arranged on two sides of the arm support main body in the length direction. On one hand, the rigidity of the whole boom system can be improved by additionally arranging the reinforcing boom, and the stress condition of the boom is improved due to the increase of the rigidity of the boom, so that the load capacity of the crane is improved. On the other hand, when the arm support is influenced by factors such as wind load, rotary braking, transverse gradient and the like, the arm support can generate lateral force, and a stable structure formed by the arm support main body and the reinforced arm support can effectively bear the lateral force, so that the lateral stability of the whole arm support system is improved.
Therefore, compared with the prior art, the reinforcing arm supports are arranged on the two sides of the arm support main body, so that the rigidity, the lateral stability and the bending resistance of the whole arm support system are improved, the stability and the stress condition of the arm support are effectively improved, and the load capacity of the crane is improved.
In addition, the arm support also has the following advantages: the height of the original arm support is not increased, and the requirement of the transport height can be met. And, need not to change revolving stage structure, simple to operate can be applicable to different kinds of cranes, and application range is wide.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic perspective view of an arm support according to an embodiment of the present invention.
Description of reference numerals:
1 lower arm of arm support main body 11
12 middle arm 2 reinforced arm support
21 head end reinforcing arm 22 middle reinforcing arm
23 tail end reinforcing arm
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. Preferred embodiments of the present invention will be further described with reference to the accompanying drawings in which:
referring to fig. 1, the figure shows an arm support structure provided in an embodiment of the present invention, where the arm support includes an arm support main body 1 and a reinforcing arm support 2; wherein,
the arm support main body 1 includes: an upper arm (not shown), a lower arm 11, and at least one intermediate arm 12 between the upper and lower arms 11;
the reinforcing arm supports 2 are symmetrically arranged on two sides of the arm support main body 1 along the length direction.
The arm support provided by the embodiment is characterized in that a group of reinforcing arm supports 2 are symmetrically and respectively arranged on two sides of the length direction of the original arm support (namely the arm support main body 1). The length direction refers to a direction perpendicular to the vertical center line of the arm support, and the length direction is shown as the left side and the right side of the arm support main body 1 in the figure. The function of the reinforcing arm support 2 is as follows: the rigidity, the lateral stability and the bending resistance of the whole boom system are improved, the stability and the stress condition of the boom are effectively improved, and the load capacity of the crane is improved. For example: on one hand, when the hoisting load of the crane is larger than that of a single boom main body, the stress condition of the boom is improved due to the increase of the stiffness of the boom, so that the load capacity of the crane is improved. On the other hand, when the arm support is influenced by factors such as wind load, rotary braking, transverse gradient and the like, the arm support can generate lateral force, and a stable structure formed by the arm support main body 1 and the reinforcing arm support 2 can effectively bear the lateral force, so that the lateral stability of the whole arm support system is improved.
The structure of the arm support body 1 may be the same as that of the prior art, and for example, the arm support body may be composed of three parts, i.e., an upper arm, a lower arm 11, and one or more intermediate arms 12 located between the upper arm and the lower arm 11, and the number of the intermediate arms 12 may be selected by those skilled in the art according to the type of the crane and the specific working conditions. It should be noted that the reinforcing arm support 2 may be disposed on two sides of one or more portions of the arm support body 1, and both the above effects can be achieved, and the present invention is also within the protection scope of the present invention.
In a preferred embodiment of the present invention, in order to further improve the lateral stability of the arm support, the end of the reinforcing arm support 2 may be mounted on the lower arm 11 or the middle arm 12 connected to the lower arm 11 along both sides of the length direction. For example: the reinforcing arm support 2 may include: a head end reinforcing arm 21, a tail end reinforcing arm 23, and at least one section of a middle reinforcing arm 22 located between the head end reinforcing arm 21 and the tail end reinforcing arm 23; the trailing end reinforcing arms 23 are attached to both sides of the lower link arm 11 or the intermediate arm 12 connected to the lower link arm 11 in the longitudinal direction thereof. The number of the joints of the middle reinforcing arm 22 can be adjusted according to specific working conditions. In order to improve the rigidity of the boom to the maximum extent, the two sides of the middle arm 12 of the boom main body 1 are preferably provided with middle reinforcing arms 22. At this time, the head end reinforcing arms 21 are attached to both sides of the upper arm of the arm frame body 1 in the longitudinal direction thereof, or both sides of the intermediate arm 12 connected to the upper arm. For a given height of the intermediate reinforcement arm 22, one skilled in the art can achieve this by setting the number of segments of the intermediate reinforcement arm 22.
In this embodiment, in order to ensure the rigidity and lateral stability of the boom and reduce the occupied space of the boom so as to avoid interference with other components, the head end surface of the head end reinforcing arm 21 in the reinforcing boom 2 may be an inclined surface inclined toward the tail end reinforcing arm 23; similarly, the end surface of the trailing end reinforcing arm 23 is a slope inclined toward the leading end reinforcing arm 21.
In addition, in order to facilitate disassembly and assembly, the reinforcing arm support 2 can be connected with the arm support main body 1 through a pin shaft, and for a large-tonnage crawler crane, the reinforcing arm support 2 is disassembled from two sides of the arm support main body 1 so as to ensure that the single transportation weight and size standards of the arm support main body 1 meet transportation standards. Specifically, each part of the reinforcing arm support 2 may be provided with a first connecting lug plate on one side close to the arm support main body 1, and two sides of the arm support main body 1 are correspondingly provided with a second connecting lug plate, and the two connecting lug plates are provided with pin holes, so that the arm support is disassembled and assembled through pin shafts.
It should be noted that the boom body 1 in the boom may be a truss arm connection structure or a box beam structure; the reinforcing boom 2 may be a truss arm structure or a box girder structure. In this embodiment, the boom main body 1 and the reinforcing boom 2 are both truss arm structures. The section of the reinforcing arm frame 2 can be rectangular, triangular and the like. The reinforcing arm frame is of a steel pipe welding structure, or an angle steel, rectangular pipe, square pipe or steel plate bending structure. In addition, the width of the reinforcing arm support 2 may be the same as that of the arm support main body 1, and the width of the reinforcing arm support 2 may also be smaller than that of the arm support main body 1. The selection may be made by one skilled in the art depending on the particular operating conditions.
As can be seen from the above, according to the boom provided by the embodiment of the invention, the reinforcing booms are arranged on the two sides of the boom main body, so that the rigidity, the lateral stability and the bending resistance of the whole boom system are improved, the stability and the stress condition of the boom are effectively improved, and the load capacity of the crane is improved. In addition, it has the following advantages: the height of the arm support is not increased so as to meet the requirement of the transportation height; the structure of the rotary table does not need to be changed, the installation is convenient, the crane can be suitable for different types of cranes, and the application range is wide.
The embodiment of the invention also provides a crane, such as a crawler crane, an automobile crane and the like. The engineering machinery is provided with any one of the arm supports, and the arm support has the technical effects, so the engineering machinery provided with the arm support also has the corresponding technical effects, and the specific implementation process is similar to that of the embodiment, which is not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An arm support, characterized by comprising:
the cantilever crane comprises a cantilever crane main body (1) and a reinforcing cantilever crane (2);
the arm support main body (1) comprises: an upper knuckle arm, a lower knuckle arm (11), and at least one intermediate arm (12) located between the upper knuckle arm and the lower knuckle arm (11);
the reinforcing arm supports (2) are symmetrically arranged on two sides of the arm support main body (1) along the length direction.
2. The boom according to claim 1, characterized in that the ends of the reinforcement boom (2) are mounted on both sides of the lower knuckle arm (11) or on both sides of a middle arm (12) connected to the lower knuckle arm (11).
3. The boom according to claim 2, characterized in that the reinforcement boom (2) comprises: a head end reinforcing arm (21), a tail end reinforcing arm (23), and at least one section of a middle reinforcing arm (22) positioned between the head end reinforcing arm (21) and the tail end reinforcing arm (23); the tail end reinforcing arms (23) are arranged on two sides of the lower-section arm (11) or on two sides of a middle arm (12) connected with the lower-section arm (11).
4. The boom according to claim 3, characterized in that the head end reinforcement arms (21) are mounted on both sides of the upper knuckle arm or on both sides of a middle arm (12) connected to the upper knuckle arm.
5. The arm support according to claim 3, characterized in that the head end surface of the head end reinforcing arm (21) is an inclined surface inclined towards the tail end reinforcing arm (23); the tail end face of the tail end reinforcing arm (23) is an inclined plane inclined towards the head end reinforcing arm (21).
6. The boom according to claim 1, characterized in that the reinforcing boom (2) is connected with the boom body (1) by a pin.
7. The boom according to claim 1, characterized in that the reinforcing boom (2) is a truss arm structure or a box beam structure; and/or the arm support main body (1) is a truss arm connection structure or a box-type beam structure.
8. The boom according to claim 1, characterized in that the cross-section of the reinforcing boom (2) is rectangular or triangular.
9. The boom of claim 1,
the reinforcing arm support (2) is of a steel pipe welding structure; or,
the reinforcing arm support (2) is of an angle steel, rectangular pipe, square pipe or steel plate bending structure.
10. A crane, characterized in that a boom according to any one of claims 1-9 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310690217.5A CN103663190A (en) | 2013-12-13 | 2013-12-13 | Cantilever crane and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310690217.5A CN103663190A (en) | 2013-12-13 | 2013-12-13 | Cantilever crane and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103663190A true CN103663190A (en) | 2014-03-26 |
Family
ID=50302124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310690217.5A Pending CN103663190A (en) | 2013-12-13 | 2013-12-13 | Cantilever crane and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103663190A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150378A (en) * | 2014-06-27 | 2014-11-19 | 浙江三一装备有限公司 | Truss arm structure and engineering machine |
| CN105347207A (en) * | 2015-12-09 | 2016-02-24 | 徐工集团工程机械股份有限公司 | Combined type cantilever crane |
| CN105600688A (en) * | 2015-11-17 | 2016-05-25 | 徐工集团工程机械股份有限公司 | Jib and crane |
| CN106115514A (en) * | 2016-08-31 | 2016-11-16 | 徐工集团工程机械股份有限公司 | Jib and crane |
| CN110626965A (en) * | 2019-10-12 | 2019-12-31 | 浙江三一装备有限公司 | Lattice type reducing assembly arm support and crane |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030029826A1 (en) * | 2000-01-19 | 2003-02-13 | Eberhard Schuffert | Ring lift crane |
| CN201132742Y (en) * | 2007-08-18 | 2008-10-15 | 梁志庭 | Suspension rod |
| EP2067737A1 (en) * | 2007-12-05 | 2009-06-10 | Liebherr-Werk Ehingen GmbH | Side bracing for a grid extension of a crane |
| CN102234074A (en) * | 2010-04-21 | 2011-11-09 | 株式会社神户制钢所 | Lattice boom |
| CN102249161A (en) * | 2010-05-21 | 2011-11-23 | 上海三一科技有限公司 | Multi-main-chord arm support for crane |
| CN102491195A (en) * | 2011-12-22 | 2012-06-13 | 上海三一科技有限公司 | Reinforcing jib frame structure of truss-jib crane and crane comprising reinforcing jib frame structure |
| CN202729659U (en) * | 2012-08-15 | 2013-02-13 | 泰州市腾达建筑工程机械有限公司 | Balance arm with powder plastic surface for tower crane |
| CN202766158U (en) * | 2012-07-17 | 2013-03-06 | 三一重工股份有限公司 | Intermediate arm, lower knuckle arm, boom and crane |
-
2013
- 2013-12-13 CN CN201310690217.5A patent/CN103663190A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030029826A1 (en) * | 2000-01-19 | 2003-02-13 | Eberhard Schuffert | Ring lift crane |
| CN201132742Y (en) * | 2007-08-18 | 2008-10-15 | 梁志庭 | Suspension rod |
| EP2067737A1 (en) * | 2007-12-05 | 2009-06-10 | Liebherr-Werk Ehingen GmbH | Side bracing for a grid extension of a crane |
| CN102234074A (en) * | 2010-04-21 | 2011-11-09 | 株式会社神户制钢所 | Lattice boom |
| CN102249161A (en) * | 2010-05-21 | 2011-11-23 | 上海三一科技有限公司 | Multi-main-chord arm support for crane |
| CN102491195A (en) * | 2011-12-22 | 2012-06-13 | 上海三一科技有限公司 | Reinforcing jib frame structure of truss-jib crane and crane comprising reinforcing jib frame structure |
| CN202766158U (en) * | 2012-07-17 | 2013-03-06 | 三一重工股份有限公司 | Intermediate arm, lower knuckle arm, boom and crane |
| CN202729659U (en) * | 2012-08-15 | 2013-02-13 | 泰州市腾达建筑工程机械有限公司 | Balance arm with powder plastic surface for tower crane |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150378A (en) * | 2014-06-27 | 2014-11-19 | 浙江三一装备有限公司 | Truss arm structure and engineering machine |
| CN105600688A (en) * | 2015-11-17 | 2016-05-25 | 徐工集团工程机械股份有限公司 | Jib and crane |
| CN105347207A (en) * | 2015-12-09 | 2016-02-24 | 徐工集团工程机械股份有限公司 | Combined type cantilever crane |
| CN106115514A (en) * | 2016-08-31 | 2016-11-16 | 徐工集团工程机械股份有限公司 | Jib and crane |
| CN110626965A (en) * | 2019-10-12 | 2019-12-31 | 浙江三一装备有限公司 | Lattice type reducing assembly arm support and crane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103663190A (en) | Cantilever crane and crane | |
| CN101880012A (en) | Transition structure for crane jib | |
| CN108946515A (en) | A kind of lifting equipment | |
| CN102774761B (en) | Arm section of truss arm, truss arm and crane | |
| CN103466472A (en) | Auxiliary arm system and crawler crane | |
| CN102020208B (en) | New Crawler Crane Boom System | |
| CN201087085Y (en) | Trussed-beam type lengthened auxiliary elevator boom with variable cross-section | |
| CN105366568A (en) | Combined type arm frame and hoisting equipment | |
| CN205312931U (en) | Modular cantilever crane and hoisting equipment | |
| CN210260906U (en) | Truss arm and crawler crane thereof | |
| CN204455858U (en) | A kind of hanger of large sections steel box-girder | |
| CN103641000A (en) | Crane and super-lifting device thereof | |
| CN202643169U (en) | Multiple arm frame truss type strengthening structure | |
| CN102674168B (en) | Reinforced boom and crane with reinforced boom | |
| CN213738325U (en) | Transition joint, truss arm and crawler crane | |
| CN201952137U (en) | Combined transition arm support | |
| CN215479346U (en) | Arm section splicing unit, arm section and tower crane | |
| CN116969351A (en) | Lifting equipment | |
| CN114212707A (en) | Cantilever crane rigidity lifting device and crane | |
| CN202766158U (en) | Intermediate arm, lower knuckle arm, boom and crane | |
| JP4745404B2 (en) | Cable or pipeline trolley for traveling along the transport rail | |
| CN116516827A (en) | A modular steel truss girder cable-stayed bridge girder crane | |
| CN202022677U (en) | Wheeled crane and variable amplitude assistant arm thereof | |
| CN210480692U (en) | Tower crane becomes vice structure and has its tower crane | |
| CN203715125U (en) | Crane as well as guying device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |