CN103395706B - Hoisting crane and telescopic boom thereof - Google Patents

Hoisting crane and telescopic boom thereof Download PDF

Info

Publication number
CN103395706B
CN103395706B CN201310350360.XA CN201310350360A CN103395706B CN 103395706 B CN103395706 B CN 103395706B CN 201310350360 A CN201310350360 A CN 201310350360A CN 103395706 B CN103395706 B CN 103395706B
Authority
CN
China
Prior art keywords
thickness
arm
telescopic boom
joint arm
lower cover
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.)
Active
Application number
CN201310350360.XA
Other languages
Chinese (zh)
Other versions
CN103395706A (en
Inventor
张庆彬
王小强
宋昕迪
陈海敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuzhou Heavy Machinery Co Ltd
Original Assignee
Xuzhou Heavy Machinery Co Ltd
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.)
Filing date
Publication date
Application filed by Xuzhou Heavy Machinery Co Ltd filed Critical Xuzhou Heavy Machinery Co Ltd
Priority to CN201310350360.XA priority Critical patent/CN103395706B/en
Publication of CN103395706A publication Critical patent/CN103395706A/en
Application granted granted Critical
Publication of CN103395706B publication Critical patent/CN103395706B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The present invention discloses a kind of hoisting crane and telescopic boom thereof, telescopic boom comprises two joints joint arm nested successively above, each described joint arm includes upper cover plate and lower cover, in described joint arm except a joint arm, minor details arm, the thickness of the lap segment of lower cover described at least one described joint arm, is greater than the thickness of part beyond described lower cover lap segment.Design like this, in normal operation, the sheet material that usually can produce stress concentrated position has thicker thickness to the lower cover of joint arm; correspondingly, namely possess higher intensity, concentrate to avoid stress and damage joint arm; and then avoid the distortion of joint arm to produce amount of deflection, extend the service life of joint arm.And stress is concentrated and is then adopted the relatively thin sheet fabrication of thickness to form with the lower cover of external position.Therefore, this telescopic boom, by the optimal combination of thickness of slab, makes telescopic boom under the strength demand prerequisite meeting resistance to deformation, and can realize the overall lightweight of telescopic boom, production cost is also able to lower.

Description

Hoisting crane and telescopic boom thereof
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of hoisting crane and telescopic boom thereof.
Background technology
The main working parts of movable crane is crane arm, and crane arm is the main load parts participating in lift heavy operation.
The main composition part of crane arm is telescopic boom, and telescopic boom comprises some joint arms nested successively, and except joint arm (basic arm), each joint arm can relative telescopic, to change the length of telescopic boom, adapts to different duty requirements.For truss-like crane arm, the minor details arm of telescopic boom also can connect extension arm joint, to improve the crane capacity of crane arm further.
Telescopic boom is generally box type telescopic arm, and it respectively saves arm and generally includes arm tail, tubular arm body and arm head, and the structure of arm tail and arm head is comparatively complicated, and save the linking of arm for front and back or connect other framing members, tubular arm body is the main body of box type telescopic boom.
Along with the increase of telescopic boom length, telescopic boom weight is overweight, the easy influenced by deflection of serviceability, now, can only pass through to thicken wall thickness to improve intensity, but productive costs is higher.For this reason, in recent years, for the lightweight of box type telescopic arm and performance boost aspect, technical personnel has done very many-sided research.Such as, the cross sectional shape of joint arm, from initial quadrangle, progressively develops into hexagon, octagon, U-shaped, oval etc.; From steel plate materials is selected, along with the maturation of domestic and international high intensity levels sheet material, High Performance sheet material is progressively applied on telescopic boom; From production technology aspect, welding fabrication technology is further enhanced, the appearance of large-scale bending equipment, is all that the production of goliath telescopic boom provides necessary preparation, also improves properties of product to a certain extent simultaneously.
But along with the maturation gradually of technology, the research of above-mentioned aspect is difficult to there is larger breakthrough, wants the lightweight, the low cost that realize telescopic boom further, must look for another way.Therefore, how realizing the lightweight of telescopic boom, low cost further and improving performance is those skilled in the art's technical matterss urgently to be resolved hurrily at present.
Summary of the invention
For solving the problems of the technologies described above, object of the present invention is for providing a kind of hoisting crane and telescopic boom thereof.This telescopic boom can realize lightweight, the low cost of telescopic boom further.
Telescopic boom provided by the invention, comprise the joint arm that two joints are nested successively above, the arm body of each described joint arm includes upper cover plate and lower cover, in described joint arm except a joint arm, minor details arm, the thickness of the lap segment of lower cover described at least one described joint arm, is greater than the thickness of part beyond described lower cover lap segment.
Lap segment and stress concentrated position; design like this; the lower cover of joint arm in normal operation; the sheet material that usually can produce stress concentrated position has thicker thickness; correspondingly, namely possess higher intensity, concentrate to avoid stress and damage joint arm; and then avoid the distortion of joint arm to produce amount of deflection, extend the service life of joint arm.And stress is concentrated and is then adopted the relatively thin sheet fabrication of thickness to form with the lower cover of external position.Therefore, this telescopic boom, by the optimal combination of thickness of slab, makes telescopic boom under the strength demand prerequisite meeting resistance to deformation, and can realize the overall lightweight of telescopic boom, production cost is also able to lower.
Preferably, the described lower cover of described joint arm is the split-type structural of sectionally smooth join, comprises the overlap joint leading portion, lap segment and the overlap joint back segment that connect successively along telescopic direction, and the thickness of described lap segment is greater than the thickness of described overlap joint leading portion, described overlap joint back segment.
Preferably, the thickness of described overlap joint back segment is greater than the thickness of described overlap joint leading portion.
Preferably, the stage casing of a described joint arm is provided with the supporting seat supporting whole telescopic boom; The thickness in the described lower cover stage casing of a described joint arm, is greater than the thickness of part beyond described lower cover stage casing.
Preferably, the described lower cover of a described joint arm is the split-type structural of sectionally smooth join, comprise connect successively along telescopic direction leading portion, stage casing and back segment, the thickness in described stage casing is greater than the thickness of described leading portion, described back segment.
Preferably, in each described joint arm, the described upper cover plate of at least one is along telescopic direction, and the thickness of its leading portion is greater than the thickness of remainder.
Preferably, the described upper cover plate of described joint arm is the split-type structural of sectionally smooth join, comprises at least two the upper cover plate segmentations connected successively along telescopic direction, and the thickness of arbitrary described upper cover plate segmentation is greater than the thickness of the described upper cover plate segmentation being positioned at its rear.
Preferably, the arm body of described minor details arm is along its telescopic direction, and the thickness of its leading portion is greater than the thickness of remainder.
Preferably, the described upper cover plate of described minor details arm and described lower cover are the split-type structural of sectionally smooth join, comprise at least two the cover plate segmentations connected successively along telescopic direction, the thickness of arbitrary described cover plate segmentation is greater than the thickness of the described cover plate segmentation being positioned at its rear.
Preferably, the described upper cover plate of each described joint arm and described lower cover, along telescopic direction, the strength of material that the part that thickness is large adopts is greater than the little part of thickness.
The present invention also provides a kind of hoisting crane, and comprise chassis and be positioned at the telescopic boom on described chassis, described telescopic boom is the telescopic boom described in above-mentioned any one.Because above-mentioned telescopic boom has above-mentioned technique effect, the hoisting crane with this telescopic boom also has identical technique effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of specific embodiment of telescopic boom provided by the present invention;
Fig. 2 is the structural representation that in Fig. 1, telescopic boom is in the state of stretching out;
Fig. 3 is the structural representation of two joint arms in Fig. 1;
Fig. 4 is that the A-A of two joint arms in Fig. 3 is to cutaway view;
Fig. 5 is the structural representation of minor details arm in Fig. 1.
In Fig. 1-5:
10 1 joint arms, 101 1 upper cover plates, 102 1 lower covers, 11 1 arm heads, 12 1 arm tails, 13 supporting seats, 20 2 joint arms, 201 2 upper cover plates, 201a bis-upper cover plate leading portion, 201b bis-upper cover plate back segment, 202 2 lower covers, 202a bis-lower cover overlap joint leading portion, 202b bis-lower cover lap segment, 202c bis-lower cover overlap joint back segment, 21 2 arm heads, 22 2 arm tails, 30 3 joint arms, 31 3 arm heads, 301 3 upper cover plates, 302 3 lower covers, 40 minor details arms, 401 last upper cover plates, 401a end upper cover plate leading portion, 401b end upper cover plate back segment, 402 last lower covers, 402a end lower cover leading portion, 402b end lower cover back segment, 41 last arm heads, 42 last arm tails, 50 extension arm joints
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to the structural representation that Fig. 1-4, Fig. 1 is a kind of specific embodiment of telescopic boom provided by the present invention; Fig. 2 is the structural representation that in Fig. 1, telescopic boom is in the state of stretching out; Fig. 3 is the structural representation of two joint arms in Fig. 1; Fig. 4 is that the A-A of two joint arms in Fig. 3 is to cutaway view.
Telescopic boom in the present embodiment, comprises the joint arm that at least two joints are nested successively, and the joint arm 10 as basic arm is articulated with crane main body, and generally can arrange amplitude oil cylinder, amplitude oil cylinder is arranged between basic arm and crane main body, to drive telescopic boom luffing.The actual number of joint arm can be arranged according to requirement of engineering, to arrange four joint arms in Fig. 1, each arm joint of this telescopic boom is respectively a joint arm 10 (i.e. basic arm), two joint arms 20, three save arm 30, minor details arm 40 (four joint arms namely in Fig. 1).
Joint arm can comprise arm head, arm body and arm tail, arm head and arm tail are used for join dependency framing member, arm body is the base portion of joint arm, according to the name saving arm in the present embodiment, the arm head of each joint arm, arm tail can be called an arm head 11 and arm tail 12, two arm head 21 and two arm tail 22, three arm heads 31 and three arm tails, last arm head 41 and last arm tail 42.In Fig. 2, the last arm head 41 of minor details arm 40 is for connecting extension arm joint 50, and its 42, last arm tail can be used for connecting the oil cylinder driving it to stretch.
The arm body of each joint arm includes upper cover plate and lower cover, forms the arm body of box-shaped joint arm after upper and lower cover board closes, two joint arm 20 cross sections as shown in Figure 4.For ease of distinguishing, hereafter the upper and lower cover plate of each joint arm is called upper cover plate 101 and lower cover 102, two upper cover plate 201 and two lower cover 202, three upper cover plate 301 and three lower covers 302, last upper cover plate 401 and last lower covers 402.
This telescopic arm structure, in its joint arm except a joint arm 10 and minor details arm 40, the thickness of the lower cover lap segment of at least one joint arm, is greater than the thickness of part beyond lower cover lap segment, as shown in Figure 3.
Except a joint arm 10, all the other respectively save arm and all can stretch in the joint arm of overcoat, when a joint arm stretches out, the a certain position of this joint arm lower cover can be overlapped on the arm head place of outer hub arm, then save arm lower cover can produce stress concentrate near this position, generally, the position of overlap joint is not fixed, but one of lower cover section, be referred to as " lap segment " in full.As shown in Figure 2, one section, the centre of two joint arms 20 is overlapped in arm head 11 place of a joint arm 10, one section, the centres of three joint arms 30 are overlapped in two arm head 21 places of two joint arms 20, then three lower covers 302 that two lower covers 202, three of two joint arms 20 save arms 30 all certainly lead to stress in lap segment and concentrate.
Telescopic boom in the present embodiment, will except a joint arm 10 and minor details arm 40, and the lap segment thickness of at least one lower cover, is processed as the thickness being greater than part beyond lower cover lap segment.Comprise two lower covers overlap joint leading portion 202a, two lower cover lap segment 202b and two lower covers overlap joint back segment 202c for two lower covers 202 of two joint arms 20, two joint arms 20 in Fig. 3, its lap segment thickness is obviously greater than its overlap joint leading portion and overlaps the thickness of back segment.In fact, lap segment is close to the rear end of joint arm usually, therefore the length of overlap joint back segment is shorter.Based on this situation, suffered by overlap joint back segment entirety, stress exceedes overlap joint leading portion, therefore the thickness of overlap joint back segment can be greater than the thickness of overlap joint leading portion, as shown in Figure 3, two lower cover overlap joint leading portion 202a thickness of two lower covers 202 are less than the thickness of two lower cover overlap joint back segment 202c.
It should be noted that, " front " " afterwards " benchmark mentioned in literary composition be along minor details arm 40 to a joint arm 10 direction, near one joint arm 10 be after, near minor details arm 40 is front.
Design like this, in normal operation, the sheet material that usually can produce stress concentrated position has thicker thickness to the lower cover of joint arm; correspondingly, namely possess higher intensity, concentrate to avoid stress and damage joint arm; and then avoid the distortion of joint arm to produce amount of deflection, extend the service life of joint arm.And stress is concentrated and is then adopted the relatively thin sheet fabrication of thickness to form with the lower cover of external position.Therefore, this telescopic boom, by the optimal combination of thickness of slab, makes telescopic boom under the strength demand prerequisite meeting resistance to deformation, and can realize the overall lightweight of telescopic boom, production cost is also able to lower.
Obviously, under this effect instructs, optimum scheme is except minor details arm 40, saves arm 10, and other joint arms all design according to above-mentioned thickness of slab array mode.For the present embodiment, two joint arms 20, three of telescopic boom save arm 30 and all can arrange according to which.
Now, the lower cover of the joint arm designed in the manner described above can be split-type structural, comprise the overlap joint leading portion, lap segment and the overlap joint back segment that connect successively along telescopic direction, namely saving arm adopts sectionally smooth join to be formed, two lower covers 202 of two joint arms 20 as shown in Figure 2, it overlaps leading portion 202a, two lower cover lap segment 202b by two lower covers, two lower covers overlap back segment 202c sectionally smooth join and form.As mentioned above, the lap segment thickness of lower cover is thicker than other parts, then some pieces of sheet material docking of different-thickness can be adopted to form.Be appreciated that also can realize said structure by other means arranges, such as, arranges brace panel in the lap segment position of a monoblock sheet material, or adopts the sheet material etc. of thickness distribution inequality.But comparatively speaking, the split type set-up mode of sectionally smooth join is more convenient for forming this structure, and the advantage of saving sheet material is more obvious, and intensity is also reliable.During sectionally smooth join, by being welded to connect between each segmentation sheet material.
Be appreciated that overlap joint leading portion herein, lap segment and overlap joint back segment are also not defined in three pieces of overall plate bodys, each section also can be divided into more than one section.Then overall lower cover can be spliced by the splice plate of more than three sections, and the different segmentations of each section both can adopt uniform thickness board material splice to be formed, and also can adopt the sheet material of different-thickness.Such as, overlap joint leading portion is set to two sections, and its thickness of one section near lap segment can be thicker than the thickness of another section.Partially long in joint arm lengths, in the comparatively uniform situation of STRESS VARIATION, the length of each segmentation sheet material can being reduced, by increasing the mode of division number, making lower cover realize gradient thickness according to STRESS VARIATION situation, improving performance.In addition, when the bending shape device scarce capacity in actual production, the former designing requirement of bending length out of reach, or existing sheet material without designing requirement length time, segmentation docking mode can solve problems.
In addition, the stage casing of a joint arm 10 can arrange the supporting seat 13 supporting whole telescopic boom, drives the amplitude oil cylinder of telescopic boom luffing can be connected to this supporting seat 13.Now, based on supporting role, larger bearing force will be born in the stage casing of a joint arm 10, thus it is concentrated also to produce stress.Therefore the stage casing thickness of a lower cover 102 of a joint arm 10, can be designed as: the thickness being greater than part beyond lower cover stage casing.Consistent with above-mentioned principle, a joint arm 10 of so design can at the thicker sheet material of stress concentrated position applied thickness, and to meet strength demand, remainder sheet metal thickness is thinner, can realize the lightweight of telescopic boom further and reduce costs.
In like manner, a lower cover 102 of a joint arm 10 also can for by the split-type structural of sectionally smooth join, comprise connect successively along telescopic direction leading portion, stage casing and back segment.Its concrete segmented version and beneficial effect thereof can describe see above-mentioned joint arm segmentation, repeat no more herein.
In addition, in each joint arm, the upper cover plate of at least one can be set to along telescopic direction: the thickness of its leading portion can be greater than the thickness of remainder.Upper cover plate not identical with the stress concentrated position of lower cover, because the deadweight and hanging of telescopic boom is carried, the stress concentrated position of upper cover plate will be positioned at the leading portion of upper cover plate.Therefore upper cover plate leading portion thickness is set to the thickness being greater than remainder, be the optimal combination by different-thickness equally, to improve the intensity of joint arm, and realize the lightweight of telescopic boom entirety and the reduction of cost.
Now, the upper cover plate of joint arm also can be designed to the split-type structural of sectionally smooth join, and namely comprise at least two the upper cover plate segmentations connected successively along telescopic direction, the thickness of arbitrary upper cover plate segmentation is greater than the thickness of the upper cover plate segmentation being positioned at its rear.Two upper cover plates 201 of two joint arms 20 as shown in Figure 3, comprise two upper cover plate leading portion 201a, two upper cover plate back segment 201b, wherein, the thickness of two upper cover plate leading portion 201a is greater than the thickness of two upper cover plate back segment 201b.As mentioned above, the mode of sectionally smooth join is easy to the cover plate forming this kind of uneven thickness, and the advantage reduced costs is the most obvious.
Please continue to refer to the structural representation that Fig. 5, Fig. 5 are minor details arm 40 in Fig. 1.
For the various embodiments described above, the arm body of minor details arm 40, along its telescopic direction, can be set to: the thickness of its leading portion is greater than the thickness of remainder, in Fig. 5, the last upper cover plate 401 of minor details arm 40 comprises last upper cover plate leading portion 401a and last upper cover plate back segment 401b, and the former is greater than the latter by thickness; The last lower cover 402 of minor details arm 40 comprises last lower cover leading portion 402a and last lower cover back segment 402b, and the former thickness is also greater than the latter.Namely from general, minor details arm 40 leading portion thickness is greater than remainder thickness, but does not limit the thickness magnitude relationship of upper and lower cover plate corresponding part.
Generally, the last arm head 41 of telescopic boom minor details arm 40 can connect extension arm joint 50, and during lift heavy, hang loading point and be positioned at extension arm and save 50 front ends, like this, the last arm head 41 of minor details arm 40 will produce larger moment of flexure, and correspondingly, the leading portion of minor details arm 40 also can produce larger moment of flexure; And, be connected to save 50 with extension arm, the last arm head 41 of minor details arm 40 has larger rigidity, and the leading portion of minor details arm 40 is thin plate tubular (box type construction that the engaging of last upper cover plate 401, last lower cover 402 is formed), rigid phase is to poor, the leading portion of minor details arm 40 last arm head 41 to arm body so can be caused to there is rigidity sudden change, be unfavorable for the stability of structure.
In the present embodiment, the leading portion thickness of minor details arm 40 arm body is greater than remainder thickness, then leading portion has good intensity, rigidity, can bending resistance square effectively, extend minor details arm 40 service life, improve safety performance, by the optimal combination of different thickness of slab, also reduce productive costs; And, eliminate the rigidity sudden change that arm head described above is connected with leading portion, be conducive to structural stability.
On this basis, similar to the above-mentioned setting principle that other save arm, the last upper cover plate 401 of minor details arm 40 and last lower cover 402 all can be designed to the split-type structural of sectionally smooth join, comprise at least two the cover plate segmentations connected successively along telescopic direction, and the thickness of arbitrary cover plate segmentation is greater than the thickness of the cover plate segmentation being positioned at its rear.
For the various embodiments described above, the upper cover plate of each joint arm and lower cover, along telescopic direction, the strength of material that the part that thickness is large adopts can be greater than the little part of thickness.Namely for stress concentrated position, both thickeied its thickness, adopted again the material of more high strength, to increase its intensity.So, by the optimal combination of material, production cost can be reduced further.
As mentioned above, a lower cover 102 stage casing thickness of a joint arm 10 is greater than remainder thickness, then lower cover 102 stage casing can adopt the higher material of intensity to make, and remainder then can adopt the relatively little material of intensity to make.Except a joint arm 10, minor details arm 40, all the other joint arm lower cover lap segments can adopt intensity to make higher than the material of remainder, as in Fig. 3, two lower cover lap segment 202b strength of materials of two joint arms 20 can higher than the intensity of two lower cover overlap joint leading portion 202a, two lower cover overlap joint back segment 202c.For another example, the upper cover plate leading portion of each joint arm can adopt the material higher than upper cover plate remainder intensity to make, and as shown in Figure 3, two upper cover plate leading portion 201a strength of materials of two joint arms 20 are greater than the intensity of two upper cover plate back segment 201b.
Except above-mentioned telescopic boom, the present embodiment also provides a kind of hoisting crane, and comprise chassis and be positioned at the telescopic boom on chassis, described telescopic boom is the telescopic boom described in above-mentioned any embodiment.Because above-mentioned telescopic boom has above-mentioned technique effect, the hoisting crane with this telescopic boom also has identical technique effect.
Above a kind of hoisting crane provided by the present invention and telescopic boom thereof are all described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.

Claims (11)

1. a telescopic boom, comprise the joint arm that two joints are nested successively above, the arm body of each described joint arm includes upper cover plate and lower cover, it is characterized in that, in described joint arm except joint arm (10), minor details arm (40), the thickness of the lap segment of lower cover described at least one described joint arm, is greater than the thickness of described lower cover overlap joint leading portion and overlap joint back segment; Wherein, described lap segment is near the rear end of described joint arm.
2. telescopic boom as claimed in claim 1, it is characterized in that, the described lower cover of described joint arm is the split-type structural of sectionally smooth join, comprises the overlap joint leading portion, lap segment and the overlap joint back segment that connect successively along telescopic direction.
3. telescopic boom as claimed in claim 2, it is characterized in that, the thickness of described overlap joint back segment is greater than the thickness of described overlap joint leading portion.
4. telescopic boom as claimed in claim 1, is characterized in that, the stage casing of described joint arm (10) is provided with the supporting seat (13) supporting whole telescopic boom; The thickness in the described lower cover stage casing of described joint arm (10), is greater than the thickness of part beyond described lower cover stage casing.
5. telescopic boom as claimed in claim 4, it is characterized in that, the described lower cover of described joint arm (10) is the split-type structural of sectionally smooth join, comprise connect successively along telescopic direction leading portion, stage casing and back segment, the thickness in described stage casing is greater than the thickness of described leading portion, described back segment.
6. telescopic boom as claimed in claim 1, it is characterized in that, in each described joint arm, the described upper cover plate of at least one is along telescopic direction, and the thickness of its leading portion is greater than the thickness of remainder.
7. telescopic boom as claimed in claim 6, it is characterized in that, the described upper cover plate of described joint arm is the split-type structural of sectionally smooth join, comprise at least two the upper cover plate segmentations connected successively along telescopic direction, the thickness of arbitrary described upper cover plate segmentation is greater than the thickness of the described upper cover plate segmentation being positioned at its rear.
8. telescopic boom as claimed in claim 1, it is characterized in that, the arm body of described minor details arm (40) is along its telescopic direction, and the thickness of its leading portion is greater than the thickness of remainder.
9. telescopic boom as claimed in claim 8, it is characterized in that, the described upper cover plate of described minor details arm (40) and described lower cover are the split-type structural of sectionally smooth join, comprise at least two the cover plate segmentations connected successively along telescopic direction, the thickness of arbitrary described cover plate segmentation is greater than the thickness of the described cover plate segmentation being positioned at its rear.
10. the telescopic boom as described in any one of claim 1-9, is characterized in that, the described upper cover plate of each described joint arm and described lower cover, and along telescopic direction, the strength of material that the part that thickness is large adopts is greater than the little part of thickness.
11. 1 kinds of hoisting cranes, comprise chassis and be positioned at the telescopic boom on described chassis, it is characterized in that, described telescopic boom is the telescopic boom described in any one of claim 1-10.
CN201310350360.XA 2013-08-12 2013-08-12 Hoisting crane and telescopic boom thereof Active CN103395706B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310350360.XA CN103395706B (en) 2013-08-12 2013-08-12 Hoisting crane and telescopic boom thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310350360.XA CN103395706B (en) 2013-08-12 2013-08-12 Hoisting crane and telescopic boom thereof

Publications (2)

Publication Number Publication Date
CN103395706A CN103395706A (en) 2013-11-20
CN103395706B true CN103395706B (en) 2015-09-16

Family

ID=49559507

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310350360.XA Active CN103395706B (en) 2013-08-12 2013-08-12 Hoisting crane and telescopic boom thereof

Country Status (1)

Country Link
CN (1) CN103395706B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106395698A (en) * 2016-09-06 2017-02-15 浙江鼎力机械股份有限公司 Big arm with unequal thickness and aloft work platform

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201071269Y (en) * 2007-07-07 2008-06-11 徐州重型机械有限公司 Variable cross-section form elevator boom
CN101524804A (en) * 2009-03-27 2009-09-09 中建钢构有限公司 Steel member manufacturing method
CN202265376U (en) * 2011-09-05 2012-06-06 徐州重型机械有限公司 Fire engine and telescopic arm thereof
CN203486800U (en) * 2013-08-12 2014-03-19 徐州重型机械有限公司 Crane and telescopic boom thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4044425B2 (en) * 2002-11-27 2008-02-06 日立建機株式会社 Multi-stage telescopic arm and working machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201071269Y (en) * 2007-07-07 2008-06-11 徐州重型机械有限公司 Variable cross-section form elevator boom
CN101524804A (en) * 2009-03-27 2009-09-09 中建钢构有限公司 Steel member manufacturing method
CN202265376U (en) * 2011-09-05 2012-06-06 徐州重型机械有限公司 Fire engine and telescopic arm thereof
CN203486800U (en) * 2013-08-12 2014-03-19 徐州重型机械有限公司 Crane and telescopic boom thereof

Also Published As

Publication number Publication date
CN103395706A (en) 2013-11-20

Similar Documents

Publication Publication Date Title
EP2639196B1 (en) TOWER CRANE AND TIE ROD STRUCTURE of balance boom THEREOF, AND method for MOUNTING tie rod structure of balance boom
CN102267670B (en) Connecting frame, boom system with connecting frame, and lifting appliance
CN202245833U (en) Connection mechanism of flat-top tower crane head and boom
CN102659037B (en) Superlift device for crane and telescopic boom crane
WO2012009950A1 (en) Transition structure for boom frame of crane
CN103466472A (en) Auxiliary arm system and crawler crane
CN103395706B (en) Hoisting crane and telescopic boom thereof
CN203486800U (en) Crane and telescopic boom thereof
CN202346646U (en) Connection structure for balance arm pull rods and tower top
CN203545535U (en) Auxiliary arm and crane
CN206069245U (en) Crawler crane setting-up balance weight dismounts luffing device certainly
CN103434949A (en) Super-lift apparatus and crane
CN102020208B (en) Novel arm support system for crawler crane
CN105113692A (en) Strip-shaped steel pulling plate cable dome structure
WO2013139116A1 (en) Arm joint for truss arm, truss arm, and crane with truss arm
CN102398863A (en) Support structure capable of improving jib bearing capacity and crane with the support structure
CN103321202B (en) An arm method of boom hoisting, dynamic compaction machinery and dynamic compaction machinery
CN101792093A (en) Crawler crane and tension device thereof
CN202022677U (en) Wheeled crane and variable amplitude assistant arm thereof
CN205777000U (en) A kind of prestressed steel structure cable support node
CN206266133U (en) Setting-up arm assembly, super lifting device and crane
CN204983316U (en) Bar steel arm -tie cable dome structure
CN204847837U (en) Single beam bridge crane main girder structure
CN201161855Y (en) Elevator balance compensation chain suspension device
CN203428809U (en) Crane and cargo boom thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant