CN106946168A - A kind of new movable arm tower crane crane arm main chord structure - Google Patents
A kind of new movable arm tower crane crane arm main chord structure Download PDFInfo
- Publication number
- CN106946168A CN106946168A CN201710315758.8A CN201710315758A CN106946168A CN 106946168 A CN106946168 A CN 106946168A CN 201710315758 A CN201710315758 A CN 201710315758A CN 106946168 A CN106946168 A CN 106946168A
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- CN
- China
- Prior art keywords
- main chord
- crane
- twin adapter
- crane arm
- joint
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- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a kind of new movable arm tower crane crane arm main chord structure, including upper and lower two main chords（12）, single joint（11）And twin adapter（13）；Described main chord（12）For circular tube structure, and each main chord（12）Two ends assign respectively into single joint（11）And twin adapter（13）In tail end, and connection fixed thereto.Beneficial effect is not only convenient, fast in process of production, shortens production cycle and production cost, reduces welding difficulty, improves the craft precision of structure, reduces the deadweight of crane arm.
Description
Technical field
The present invention relates to a kind of main chord structure, more particularly to a kind of new movable arm tower crane crane arm main chord structure.
Background technology
Jib for tower crane main chord crane arm design relation to the Fixture Design of crane arm, processing cost,
In terms of material cost, tower crane general safety performance.Shown in Fig. 1-4, in existing design, the technique road of crane arm lower edge
Line is：Press forging wire cutting blanking-lower edge joint relevant surfaces and bearing pin are added to lower edge rod end surface processing groove type breach-machine
Hole-lower contact and lower edge main chord welding-lower boom；Crane arm winds up process route：Flame oxygen cutting stock sheet material hair
Base-pin shaft hole and adverse slope mouth-otic placode are processed and the main chord welding-top boom that winds up to blank.Lower edge joint is with single twin adapter
The form connection of pairing, single twin adapter inserts main chord two ends respectively, and carries out welding according to pre- allowance.In order to ensure crane arm
Wait strong everywhere, lower edge joint, which needs that in afterbody longer one section can be stayed, is used to inserting crane arm lower boom, crane arm lower boom can be
Four shaped grooved breach in face of joint are to increase weld seam, and all weld seams are plug welding.Due to objective factors such as personnel and environment
Influence, the weldquality of this connected mode is difficult to be guaranteed, and directly affects the performance of crane arm.Connect in production and processing lower edge
During head, smart machine dosage is big, production cycle length, cost are higher.
It can be seen that, existing whip-typed tower crane crane arm main chord high processing costs, there is Fixture Design precision will
Ask high, high defect is required to welding deformation sensitive, welder personnel level of skill, be specifically described as follows：1st, crane arm lower boom
There is potential safety hazard.The shaped grooved breach on lower edge main chord is needed, destruction to a certain extent is so caused to main chord, it is main
Chord member is plug welding with lower edge joint welding, and welding capacity is big, difficult forming, the ropy shortcoming of molded appearance.2nd, manufacturing procedure
Complicated, workpiece is more.Processing is required to lower edge joint, main chord from blank to the final lower edge main chord that is processed into, and
Lower edge joint tail partial outer face and inner surface are required to machine and added, and machine adds high cost.
3rd, larger, the lower boom length requirement of lower edge joint deadweight is higher., can be by under to ensure the intensity requirement of lower edge joint
String joint leaves longer one section of tail, and lower edge afterbody is processed into hollow loss of weight is handled, but still wall thickness is thicker, and deadweight is still
It is larger；Lower edge joint is inserts in main chord, and lower boom has step, can be higher to main chord length dimension required precision.
4th, weld amount of winding up is big, and deformation is big, requires high to frock size.Wind up otic placode position dimension and to open shelves necessary
Recruitment is put into row and ensured, requires high to frock, adds the difficulty of Fixture Design manufacture.Therefore be necessary to the tower lifting of movable arm type
Machine draw beam optimizes design.
The content of the invention
For above-mentioned existing technical problem, on the premise of crane arm security, reliability is ensured, and it can mitigate
Weighing arm overall weight, improves production efficiency, and the present invention provides a kind of new movable arm tower crane crane arm main chord structure, and purpose exists
In making crane arm reduce production cost and dependence and welding personnel skill set requirements to frock in process of manufacture, and
Ensure safe and reliable structure, humanization designing, integration, reduce production process, improve precision.
To achieve the above object, the present invention provides a kind of new movable arm tower crane crane arm main chord structure, including upper and lower
Two main chords, single joint and twin adapter；Described main chord is circular tube structure, and pipe more preferably, more saves material than square tube stress
Material.And the two ends of each main chord are assigned in single joint and twin adapter tail end respectively, and connection fixed thereto.
Further, fillet weld seam is used between described main chord and single joint and twin adapter, due to being angle welding,
It can be more guaranteed than groove profile weldquality and outward appearance shaping, reduce welding skill set requirements.
Further, described single joint and twin adapter use integral machine add-on type, and joint essence machine adds face to reduce shortening
Production cycle, reduce processing cost.
Main string is pipe main chord and single twin adapter composition above and below the present invention, crane arm joints structure form process is few,
With short production cycle, production cost is low in the whole process of crane arm, craft precision is high, will to frock and welding personnel technical ability
Ask lower.With following advantage：1st, eliminate safe hidden trouble.This lower edge joint form lower boom is shaped grooved not on main chord
Opening, is not damaged to main chord, it is to avoid because main chord unsafe influence that slot-type openings are caused.Weld seam is by groove profile
Weld seam is changed to angle welding, reduces appearance of weld difficulty, improves weldquality.
2nd, processing capacity reduces, and manufactures simpler.New-type lower edge joint polished surface is reduced, and processing cost is lower；
The processing of the grooved breach of main chord is reduced, the manufacturing procedure of main chord is reduced；Because main chord is to fill in lower edge joint
In, reduce the dimension precision requirement of main chord.
3rd, the weight reduction of main string joint.Due to winding up and lower edge is constituted using same manner, prior art winds up as plate
Material is welded with main string, and empirical evidence sheet material otic placode is below joint form at two aspects of stock utilization and deadweight.
4th, new-type main string is integral machine add-on type due to single twin adapter, and dimensional accuracy can more be protected than welding otic placode
Card.
Brief description of the drawings
Fig. 1 is the structural representation of derrick runway girder lower boom in the prior art；
Fig. 2 is Fig. 1 front view；
Fig. 3 is the structural representation of derrick runway girder top boom in the prior art；
Fig. 4 is Fig. 3 front view；
Fig. 5 is structural representation of the invention；
Fig. 6 is Fig. 5 front view；
In figure：1st, lower edge list joint, 2, lower edge main chord, 3, lower edge twin adapter, 4, wind up monaural plate, 5, wind up main chord, 6,
Wind up bi-lug plate, 11, single joint, 12, main chord, 13, twin adapter.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 5, Figure 6, the present invention includes upper and lower two main chords 12, single joint 11 and twin adapter 13；Described master
Chord member 12 is circular tube structure, and each the two ends of main chord 12 are assigned in single joint 11 and the tail end of twin adapter 13 respectively, and with
Use fillet weld seam fix, than groove profile weldquality and outward appearance shaping can more be guaranteed, reduce welding skill set requirements.
In above-described embodiment, described single joint 11 and twin adapter 13 use integral machine add-on type, and reduction is shortened
Production cycle.Joint have smart machine add face it is few, from heavy and light, more can guarantee that the security of crane arm, outward appearance more can be guaranteed
Advantage；During implementation, the blank containing single, double joint 11,13 is obtained first with cutting machine blanking, then to single, double joint 11,13
Processing is machined out, final single, double joint 11,13 with main chord 12 with docking welding into main string respectively, to solve existing skill
The defects such as the potential safety hazard that art welding capacity is big, deformation is big, main chord is present, reduce the size requirement to main string, craft precision
Height, it is convenient to use；By applying the technology, column foot crane arm main chord is not only convenient, fast in process of production, shortens
Production cycle and production cost, reduce welding difficulty, improve the craft precision of structure, reduce the deadweight of crane arm.
Meanwhile, there is important reference value and application value to the design of also other products.
Claims (3)
1. a kind of new movable arm tower crane crane arm main chord structure, it is characterised in that including upper and lower two main chords（12）,
Single joint（11）And twin adapter（13）；Described main chord（12）For circular tube structure, and each main chord（12）Two ends difference
Assign into single joint（11）And twin adapter（13）In tail end, and connection fixed thereto.
2. a kind of new movable arm tower crane crane arm main chord structure according to claim 1, it is characterised in that described
Main chord（12）With single joint（11）And twin adapter（13）Between use fillet weld seam.
3. a kind of new movable arm tower crane crane arm main chord structure according to claim 1 or 2, it is characterised in that institute
The single joint stated（11）And twin adapter（13）Use integral machine add-on type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710315758.8A CN106946168A (en) | 2017-05-08 | 2017-05-08 | A kind of new movable arm tower crane crane arm main chord structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710315758.8A CN106946168A (en) | 2017-05-08 | 2017-05-08 | A kind of new movable arm tower crane crane arm main chord structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106946168A true CN106946168A (en) | 2017-07-14 |
Family
ID=59478209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710315758.8A Pending CN106946168A (en) | 2017-05-08 | 2017-05-08 | A kind of new movable arm tower crane crane arm main chord structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106946168A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203033606U (en) * | 2012-11-28 | 2013-07-03 | 广州市京龙工程机械有限公司 | Standard knot main chord member structure |
| CN203065055U (en) * | 2012-11-14 | 2013-07-17 | 西安京龙工程机械有限公司 | Suspension arm lower chord device |
| CN203269410U (en) * | 2013-05-13 | 2013-11-06 | 湖南大力建设机械工程股份有限公司 | Shaft-end anti-disengaging device for cargo booms of tower crane |
| CN105480874A (en) * | 2015-10-30 | 2016-04-13 | 徐州建机工程机械有限公司 | Cargo boom main chord rod structure of tower crane with luffing boom |
-
2017
- 2017-05-08 CN CN201710315758.8A patent/CN106946168A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203065055U (en) * | 2012-11-14 | 2013-07-17 | 西安京龙工程机械有限公司 | Suspension arm lower chord device |
| CN203033606U (en) * | 2012-11-28 | 2013-07-03 | 广州市京龙工程机械有限公司 | Standard knot main chord member structure |
| CN203269410U (en) * | 2013-05-13 | 2013-11-06 | 湖南大力建设机械工程股份有限公司 | Shaft-end anti-disengaging device for cargo booms of tower crane |
| CN105480874A (en) * | 2015-10-30 | 2016-04-13 | 徐州建机工程机械有限公司 | Cargo boom main chord rod structure of tower crane with luffing boom |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170714 |
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| WD01 | Invention patent application deemed withdrawn after publication |