CN103663190A - Cantilever crane and crane - Google Patents

Cantilever crane and crane Download PDF

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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
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CN
China
Prior art keywords
jib
arm
cantilever
reinforcement
joint
Prior art date
Application number
CN201310690217.5A
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Chinese (zh)
Inventor
秦绪起
张扬
焦战方
Original Assignee
浙江三一装备有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 浙江三一装备有限公司 filed Critical 浙江三一装备有限公司
Priority to CN201310690217.5A priority Critical patent/CN103663190A/en
Publication of CN103663190A publication Critical patent/CN103663190A/en

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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

Jib and hoisting crane

Technical field

The present invention relates to engineering machinery field, particularly a kind of jib and hoisting crane.

Background technology

Hoisting crane is a kind of construction machinery and equipment that can carry out the operations such as material lifting, transportation and handling, be widely used in the fields such as building, traffic, harbour, the energy and irrigation and water conservancy, concrete as built bridge, install generating set, shipbuilding, setting up wind power generating set etc.

The compositions such as the common dynamic device of hoisting crane, operating mechanism, jib, turntable and running gear.Wherein jib mostly is truss arm structure, and its lower end is articulated with the platform on turntable, and top, by the suspension strut of variable-amplitude steel wire rope assembly pulley, can change its inclination angle.Existing jib generally includes: above save arm, lower joint arm and be located at lower joint arm and upper joint arm between at least one joint intermediate arm, conventionally by increase and decrease intermediate arm quantity regulate jib length and stability.

Jib is the key construction of hoisting crane, and its structure has material impact to the load-carrying capacity of hoisting crane.Existing jib adopts truss arm single armed form more, lifting along with crane output demand, for guaranteeing that jib sectional dimension is issued to load-carrying ability requirement in the prerequisite of super traffic limitation not, only from jib material specification and material aspect, promote, be difficult to realization.For addressing this problem, prior art has and on hoister in large tonnage, has adopted both arms frame system, adopts two cover jibs parallel or " people " font.But it is larger that this structure changes the design of conventional hoist turntable, make the complex structure of turntable, inconvenience is installed, be not suitable for large-tonnage crawler crane.

Summary of the invention

In view of this, the present invention proposes a kind of load capacity jib strong and applied widely and hoisting crane.

For achieving the above object, technical scheme of the present invention is achieved in that

On the one hand, the invention provides a kind of jib, comprising: jib main body and reinforcement jib; Described jib main body comprises: above save arm, lower joint arm, and the intermediate arm that saves at least one joint between arm and lower joint arm on described; Described reinforcement jib is installed on described jib main body both sides along its length symmetrically.

Further, the end of described reinforcement jib is installed on the both sides of described lower joint arm, or is installed on the both sides of the intermediate arm being connected with described lower joint arm.

Further, described reinforcement jib comprises: head end is strengthened arm, tail end is strengthened arm, and the middle arm of strengthening of strengthening at least one joint between arm and tail end reinforcement arm at described head end; Described tail end is strengthened arm and is installed on the both sides of described lower joint arm, or is installed on the both sides of the intermediate arm being connected with described lower joint arm.

Further, described head end is strengthened arm and is installed on the both sides of described upper joint arm, or is installed on the both sides of the intermediate arm being connected with described upper joint arm.

Further, the head end end face of described head end reinforcement arm is to strengthen to described tail end the inclined-plane that arm direction tilts; The distal end faces that described tail end is strengthened arm is that head-end is strengthened the inclined-plane that arm direction tilts.

Further, described reinforcement jib is connected by bearing pin with described jib main body.

Further, described reinforcement jib is truss arm structure or box beam structure; And/or described jib main body is truss arm connecting structure or box beam structure.

Further, the cross section of described reinforcement jib is rectangle or triangle.

Further, described reinforcement jib is steel-pipe welding structure; Or described reinforcement jib is angle steel, rectangular tube, square tube or steel plate bending structure.

The present invention also provides a kind of hoisting crane, and it is provided with the jib described in above-mentioned any one.

A kind of jib provided by the invention, the reinforcement jib that it comprises jib main body and is arranged at jib principal length direction both sides.On the one hand, strengthen the rigidity that can improve whole boom system of setting up of jib, due to the increase of jib rigidity, the force-bearing situation of jib improves, thereby improves the load capacity of hoisting crane.On the other hand, when jib is subject to wind, carry, during the affecting of the factor such as rotary braking, transverse grade, can make jib produce side force, jib main body and the formed rock-steady structure of reinforcement jib can bear side force effectively, thereby improve the lateral stability of whole boom system.

Therefore, with respect to prior art, the present invention, by reinforcement jib being set in jib main body both sides, improves rigidity, lateral stability and the resistance to bending of whole jib boom system, effectively improve stability and the stressing conditions of jib, thereby improve the load capacity of hoisting crane.

In addition, above-mentioned jib also has the following advantages: do not increase the height of former jib, can meet the requirement of shipping height.And, without changing turntable structure, easy for installation, can be applicable to different types of hoisting crane, range of use is wide.

Accompanying drawing explanation

The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

The perspective view of the jib that Fig. 1 provides for the embodiment of the present invention.

Description of reference numerals:

1 jib main body 11 times joint arm

12 intermediate arms 2 are strengthened jib

21 head ends are strengthened strengthening arm in the middle of arm 22

23 tail ends are strengthened arm

The specific embodiment

It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the present invention can combine mutually.Below in conjunction with accompanying drawing, each preferred embodiment of the present invention is described further:

Refer to Fig. 1, the figure shows the jib structure that the embodiment of the present invention provides, this jib comprises jib main body 1 and strengthens jib 2; Wherein,

Jib main body 1 comprises: above save arm (not shown), lower joint arm 11, and the intermediate arm 12 of at least one joint between upper joint arm and lower joint arm 11;

Strengthen jib 2 and be installed on symmetrically described jib main body 1 both sides along its length.

The jib that the present embodiment provides is on the basis of original jib (being above-mentioned jib main body 1), respectively adds one group strengthen jib 2 on the bilateral symmetry ground of its length direction.Length direction described in the application refers to along the vertical line of centers of jib to vertical direction, is the left and right sides of jib main body 1 shown in figure.The effect that above-mentioned reinforcement jib 2 is set is: improve rigidity, lateral stability and the resistance to bending of whole boom system, actv. improves stability and the stressing conditions of jib, thereby improves the load capacity of hoisting crane.For example: on the one hand, when hoisting crane hangs while carrying than the larger load of single jib main body, due to the increase of jib rigidity, the force-bearing situation of jib improves, thereby improves the load capacity of hoisting crane.On the other hand, when jib is subject to wind, carry, the impact of the factor such as rotary braking, transverse grade, can make jib produce side force, jib main body 1 and the formed rock-steady structure energy of reinforcement jib 2 actv. bear side force, thereby improve the lateral stability of whole boom system.

The structure of above-mentioned jib main body 1 can be same as the prior art, for example can be comprised of upper joint arm, lower joint arm 11 and a joint or more piece intermediate arm 12 these three parts between upper joint arm and lower joint arm 11, joint number those skilled in the art of intermediate arm 12 can select according to the type of hoisting crane and concrete operating mode.It should be noted that, above-mentioned reinforcement jib 2 can be arranged at the both sides of a part of in jib main body 1 or a plurality of parts, all can reach above-mentioned effect, also all within protection scope of the present invention.

In preferred version of the present invention, in order to improve further the lateral stability of jib, the both sides that the end of above-mentioned reinforcement jib 2 can be installed on lower joint arm 11 or the intermediate arm 12 that is connected with described lower joint arm 11 prolongs its length direction.For example: strengthening jib 2 can comprise: head end is strengthened arm 21, tail end is strengthened arm 23, and in the middle of at least one joint between head end reinforcement arm 21 and tail end reinforcement arm 23 strengthen arm 22; Above-mentioned tail end strengthens that arm 23 is installed on lower joint arm 11 or the intermediate arm 12 that is connected with lower joint arm 11 both sides along its length.Middle 22 joint numbers of arm of strengthening can regulate according to concrete operating mode.In order farthest to improve the rigidity of jib, in the middle of being preferably provided with, the both sides of the intermediate arm 12 of above-mentioned jib main body 1 strengthen arm 22.Now, head end is strengthened the both sides that upper joint arm that arm 21 is installed on jib main body 1 prolongs its length direction, or the both sides of the intermediate arm 12 being connected with upper joint arm.For strengthening arm 22 in the middle of certain altitude, those skilled in the art can realize above-mentioned effect by strengthening the joint number of arm 22 in the middle of arranging.

In the present embodiment, for when guaranteeing jib rigidity and lateral stability, reduce it and take up room, interfere avoiding with other parts, the head end in above-mentioned reinforcement jib 2 is strengthened the inclined-plane that the head end end face of arm 21 can tilt for caudad strengthening arm 23 directions; Similarly, tail end is strengthened the inclined-plane that the distal end faces of arm 23 is the 21 directions inclinations of head-end reinforcement arm.

In addition, for the ease of dismounting, above-mentioned reinforcement jib 2 can be connected by bearing pin with jib main body 1, for large-tonnage crawler crane, by strengthening jib 2, from jib main body 1 both sides, dismantle, in order to guarantee that jib main body 1 single-piece domestic shipping weight and dimensional standard meet transportation standard.Particularly, the each several part of above-mentioned reinforcement jib 2 can arrange the first connection otic placode in the side near jib main body 1, and the both sides of jib main body 1 arrange the second connection otic placode accordingly, and above-mentioned two connection otic placodes all arrange pin-and-hole, carry out dismounting thus by bearing pin.

It should be noted that, the jib main body 1 in above-mentioned jib can be truss arm connecting structure or box beam structure; Strengthening jib 2 can be truss arm structure or box beam structure.In the present embodiment, jib main body 1 and reinforcement jib 2 are truss arm structure.The cross section of strengthening jib 2 can be the shapes such as rectangle, triangle.Strengthening jib is steel-pipe welding structure, or is angle steel, rectangular tube, square tube or steel plate bending structure.In addition, the width of above-mentioned reinforcement jib 2 can be identical with jib main body 1, and the width of strengthening jib 2 also can be less than jib main body 1.Those skilled in the art can select according to concrete operating mode.

As shown in the above, the jib that the embodiment of the present invention provides, by reinforcement jib being set in jib main body both sides, improves rigidity, lateral stability and the resistance to bending of whole jib boom system, actv. improves stability and the stressing conditions of jib, thereby improves the load capacity of hoisting crane.In addition, it also has the following advantages: do not increase the height of jib, to meet the requirement of shipping height; Without changing turntable structure, easy for installation, can be applicable to different types of hoisting crane, range of use is wide.

The embodiment of the present invention also provides a kind of hoisting crane, such as crawler crane, car hosit etc.This project machinery is provided with above-mentioned any jib, and because above-mentioned any jib has above-mentioned technique effect, therefore, the construction machinery and equipment that is provided with this jib also should possess corresponding technique effect, and its specific implementation process is similar to the above embodiments, does not hereby repeat.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1. a jib, is characterized in that, comprising:
Jib main body (1) and reinforcement jib (2);
Described jib main body (1) comprising: above save arm, lower joint arm (11), and the intermediate arm (12) that is positioned at least one joint between described upper joint arm and lower joint arm (11);
Described reinforcement jib (2) is installed on described jib main body (1) both sides along its length symmetrically.
2. jib according to claim 1, is characterized in that, the end of described reinforcement jib (2) is installed on the both sides of described lower joint arm (11), or is installed on the both sides of the intermediate arm (12) being connected with described lower joint arm (11).
3. jib according to claim 2, it is characterized in that, described reinforcement jib (2) comprising: head end is strengthened arm (21), tail end is strengthened arm (23), and is positioned at the middle arm (22) of strengthening that described head end is strengthened at least one joint between arm (21) and tail end reinforcement arm (23); Described tail end is strengthened arm (23) and is installed on the both sides of described lower joint arm (11), or is installed on the both sides of the intermediate arm (12) being connected with described lower joint arm (11).
4. jib according to claim 3, is characterized in that, described head end is strengthened arm (21) and is installed on the both sides of described upper joint arm, or is installed on the both sides of the intermediate arm (12) being connected with described upper joint arm.
5. jib according to claim 3, is characterized in that, the head end end face that described head end is strengthened arm (21) is to strengthen to described tail end the inclined-plane that arm (23) direction tilts; The distal end faces that described tail end is strengthened arm (23) is that head-end is strengthened the inclined-plane that arm (21) direction tilts.
6. jib according to claim 1, is characterized in that, described reinforcement jib (2) is connected by bearing pin with described jib main body (1).
7. jib according to claim 1, is characterized in that, described reinforcement jib (2) is truss arm structure or box beam structure; And/or described jib main body (1) is truss arm connecting structure or box beam structure.
8. jib according to claim 1, is characterized in that, the cross section of described reinforcement jib (2) is rectangle or triangle.
9. jib according to claim 1, is characterized in that,
Described reinforcement jib (2) is steel-pipe welding structure; Or,
Described reinforcement jib (2) is angle steel, rectangular tube, square tube or steel plate bending structure.
10. a hoisting crane, is characterized in that, is provided with the jib described in claim 1 to 9 any one.
CN201310690217.5A 2013-12-13 2013-12-13 Cantilever crane and crane CN103663190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 Steeve
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
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 Steeve
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)

* Cited by examiner, † Cited by third party
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

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Application publication date: 20140326

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