CN102267039A - Manufacturing method for radial arm of crane - Google Patents
Manufacturing method for radial arm of crane Download PDFInfo
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- CN102267039A CN102267039A CN2011101573435A CN201110157343A CN102267039A CN 102267039 A CN102267039 A CN 102267039A CN 2011101573435 A CN2011101573435 A CN 2011101573435A CN 201110157343 A CN201110157343 A CN 201110157343A CN 102267039 A CN102267039 A CN 102267039A
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Abstract
The invention provides a manufacturing method for the radial arm of a crane, wherein a long-shaped main body member (21a) is formed along an opening in the length direction (L). The opening part of the main body member (21a) is welded with a long board member (21b) so as to form the long hollow bearing part (21) of the radial arm (2) of a crane. According to the manufacturing method, in a preassembling process, the main body member (21a) and the long board member (21b) are prewelded and preassembled into bearing parts (21); In a bending process, the two bearing parts (21) are bent in a mutually restricting way in the direction opposite to the assumed deformation direction due to the welding process; In a formal welding process, the two bearing parts (21) are formally welded under the mutually restricting state.
Description
Technical field
The present invention relates to be used to make the crane spiral arm manufacture method of crane spiral arm.
Background technology
For example, in the deck crane, anchor post is provided with the swinging strut that can rotate.Swinging strut is provided with the crane spiral arm.The crane spiral arm constitutes by two supports of lengthwise shape are connected to each other.Two supports are arranged to each cardinal extremity and are supported on swinging strut and can swing up and down.And the crane spiral arm is by being arranged on pitching on the swinging strut with the coiling of the cable that capstan winch carried out or emit and carry out pitching (for example, with reference to patent documentation 1).
Patent documentation 1: Japanese kokai publication hei 10-101292 communique
Yet, as the deck crane of record in the above-mentioned patent documentation 1, the crane spiral arm that is made of two supports need make the support lightweight for pitching, and need have rigidity, therefore the pair of support parts that constitutes the crane spiral arm usually is the structure of hollow, thereby realizes lightweight and high rigidization.
The support of this hollow lengthwise shape is made by a plurality of members of solder joints, but after the welding, owing to the thermal contraction of welding position produces distortion, the support of lengthwise shape occurs bending and deformation.Therefore, in the past, employing limited support or welded with the state that applies reversible deformation, suppress the diastrophic manufacture method of support, but still occur bending and deformation, therefore after the welding, by gas burner support is heated, and proofread and correct by water cooling.In this case, after the formation of support, need the correction operation of proofreading and correct.Consequently, when making the crane spiral arm, need a lot of time, manufacturing cost uprises.
Summary of the invention
The present invention is used to solve the above problems, and its purpose is to provide a kind of crane spiral arm manufacture method that can make the crane spiral arm easily.
In order to reach above-mentioned purpose, in the crane spiral arm manufacture method of the present invention, for sidepiece alongst opening and the main component of the lengthwise shape that forms, weld the board member of lengthwise shape at the opening portion of this main component, form the support of the lengthwise shape hollow that constitutes the crane spiral arm thus, described crane spiral arm manufacture method is characterised in that, comprising: described main component and described board member are carried out pre-welding and the pre-pre-assembling procedure of assembling described support; Be set up in parallel two described supports after the pre-assembling, and apply under the crooked state, the bending operation that two described supports are limited each other at rightabout to the imagination distortion that causes by formal welding; Carry out formal welding sequence simultaneously for the formal welding of described two supports under the restriction state.
According to this crane spiral arm manufacture method, under the state of pre-assembling support, the rightabout of the imagination distortion that causes towards formal welding applies bending in advance to support, therefore can fully absorb the distortion that the thermal contraction after the formal welding causes.And, owing to be set up in parallel two supports after the pre-assembling each support is applied bending, therefore can apply bending comparably to two supports that constitute spiral arm.And, by two supports are carried out formal welding simultaneously, can produce the rightabout distortional stress that thermal contraction causes comparably to two supports, compare with the situation that each support is welded, can far form linearity, the distortion of each support after lifting restrictions can be produced and suppress to be Min..Consequently, can make the crane spiral arm easily.
In addition, crane spiral arm manufacture method of the present invention is characterised in that, behind described formal welding sequence, makes the support rotation under the state that keeps restriction, then carries out the formal welding of other welding position of described two supports simultaneously.
According to this crane spiral arm manufacture method,, other welding position can be configured to the position of formally welding easily by under the state that keeps restriction, making the support rotation.Therefore, can carry out formal weld job easily.Consequently, can make the crane spiral arm easily.
The invention effect
According to the present invention, can make the crane spiral arm easily.
Description of drawings
Fig. 1 is the concise and to the point side view with deck crane of the crane spiral arm that embodiments of the present invention relate to.
Fig. 2 is the concise and to the point vertical view of deck crane shown in Figure 1.
Fig. 3 is the concise and to the point stereogram of the cable of expression deck crane shown in Figure 1.
Fig. 4 is the concise and to the point cutaway view (the A-A cross section enlarged drawing of Fig. 2) of the crane spiral arm that relates to of expression embodiments of the present invention.
Fig. 5 is the sketch of the manufacturing process of the crane spiral arm that relates to of expression embodiments of the present invention.
Fig. 6 is the sketch of the manufacturing process of the crane spiral arm that relates to of expression embodiments of the present invention.
Fig. 7 is the sketch of the manufacturing process of the crane spiral arm that relates to of expression embodiments of the present invention.
Fig. 8 is the sketch of the manufacturing process of the crane spiral arm that relates to of expression embodiments of the present invention.
Fig. 9 is the sketch of the manufacturing process of the crane spiral arm that relates to of expression embodiments of the present invention.
Figure 10 is the sketch of other manufacture method of the crane spiral arm that relates to of expression embodiments of the present invention.
Symbol description:
2 crane spiral arms (spiral arm)
21 supports
The 21a main component
The 21b board member
10 welding (formal welding)
11 pre-weldings
12 distance pieces
100 maintaining bodies
110 maintaining parts
120 rotating parts
121 rotation pallets
122 driven gears
123 motor
The 123a driven wheel
200 level jack
201 restriction anchor clamps
300 multi-electrode welders
The length direction of L support
The specific embodiment
Below, based on drawing, explain the embodiment that the present invention relates to.Need to prove, be not to limit the present invention by this embodiment.And, comprise in the inscape of following embodiment that those skilled in the art can and replace or identical in fact parts easily.
Fig. 1 is the concise and to the point side view with deck crane of the crane spiral arm that present embodiment relates to, and Fig. 2 is the concise and to the point vertical view of deck crane shown in Figure 1, and Fig. 3 is the concise and to the point stereogram of the cable of expression deck crane shown in Figure 1.
As shown in Figures 1 and 2, in deck crane, swinging strut 1 is provided with crane spiral arm (below, abbreviate spiral arm as) 2.Swinging strut 1 is arranged to and can be rotated around axle center S with respect to the anchor post 4 that is fixed on the deck 3.This swinging strut 1 is rotated around axle center S by not shown drive mechanism.
And, be provided with pitching with capstan winch 5 and roll with capstan winch 6 at the downside of swinging strut 1.In addition, be provided with five pulley 7a～7e in the upper end of swinging strut 1.
In addition, the upper front end at spiral arm 2 is provided with five pulley 7f～7j.And, be provided with a pulley 7k in the middle upper portion of spiral arm 2.
As shown in Figure 3, be wrapped in pitching and be erected in turn with the cable 8a on the capstan winch 5 on the pulley 7k of pulley 7c, spiral arm 2 medial side of pulley 7g, swinging strut 1 side of pulley 7b, spiral arm 2 front of swinging strut 1 side, and front end is fixed in swinging strut 1.And by utilizing pitching with capstan winch 5 coiling cable 8a, and cable 8a is stretched, with the pulley 7g of the front of spiral arm 2 and the pulley 7k pull-up of medial side.Therefore, spiral arm 2 is that swing upward at the center with axle 2a, and front end rises.On the other hand, emit cable 8a by utilizing pitching with capstan winch 5, and cable 8a is lax, the pulley 7g of the front of spiral arm 2 and the pulley 7k of medial side hang and fall.Therefore, spiral arm 2 is that swing downwards at the center with axle 2a, and front end descends.Like this, the cable 8a's that carried out with capstan winch 5 by pitching of spiral arm 2 rolls or emits and carry out pitching.
As shown in Figure 3, be wrapped in lifting with the cable 8b on the capstan winch 6 be erected at the pulley 7f of pulley 7a, spiral arm 2 front of swinging strut 1 side in turn, on the pulley 7h of the pulley 7d of the pulley 7i of the pulley 7e of the pulley 7j of the pulley 9a that is provided with on the lift component 9 that constitutes by suspension hook etc., spiral arm 2 front, swinging strut 1 side, spiral arm 2 front, swinging strut 1 side, spiral arm 2 front, and front end is fixed in swinging strut 1.And by utilizing lifting capstan winch 6 coiling cable 8b, cable 8b is stretched, with pulley 9a pull-up.Therefore, at spiral arm 2 front end downsides, lift component 9 rises.On the other hand, emit cable 8b by utilizing lifting with capstan winch 6, cable 8b is lax, and pulley 9a hangs and falls.Therefore, at spiral arm 2 front end downsides, lift component 9 descends.Like this, the cable 8b's that carried out with capstan winch 6 by lifting of lift component 9 rolling or emitting and lifting.That is, by goods (not shown) being installed and can being made the goods lifting at lift component 9.
And,, the goods that is installed on the lift component 9 is moved by the rotation of above-mentioned swinging strut 1, the pitching of spiral arm 2, the lifting of lift component 9.Need to prove, among the control cabinl pulpit 1a on being arranged at swinging strut 1, operate the rotation of swinging strut 1, the pitching of spiral arm 2, the lifting of lift component 9 by the operator.
Fig. 4 is the concise and to the point cutaway view (the A-A cross section enlarged drawing of Fig. 2) of the crane spiral arm that relates to of expression present embodiment.As shown in Figure 4, roughly the main component 21a of the lengthwise shape of コ font and the board member 21b of lengthwise shape constitute two supports 21 that constitute spiral arm 2 opening and the cross section that forms along its length by sidepiece, wherein, the board member 21b of lengthwise shape is fixed in the opening portion of main component 21a.By such formation, support 21 forms lengthwise shape hollow, can realize the lightweight and the high rigidization of spiral arm 2.
For board member 21b is fixed in main component 21a, at the openend of main component 21a groove is set, with board member 21b welding 10 in this groove part.Yet when by welding 10 when board member 21b is fixed on the sidepiece of main component 21a, because of welding the cooling after 10, the sidepiece of main component 21a shrinks and produces distortion, bends to arcuation to the side.Especially because support 21 for example be a lengthwise shape about 30m, so the modified difference about front end and central portion generation 300mm.
Therefore, the crane spiral arm manufacture method of present embodiment is the method that is used to revise above-mentioned distortion and forms support 21 simultaneously easily.Fig. 5～Fig. 9 is the sketch of the manufacturing process of the crane spiral arm that relates to of expression present embodiment.
At first, as shown in Figure 5, main component 21a and board member 21b are assembled in advance (pre-assembling procedure) by pre-welding 11.Afterwards, prepare two supports 21 after the pre-assembling.
Then, as shown in Figure 6, two supports 21 after assembling in advance are set up in parallel in the opposite mode of board member 21b side, and the rightabout that the imagination that causes towards the formal welding 10 by the back simultaneously is out of shape applies bending (reversible deformation) (bending operation) to support 21.In this bending operation, use maintaining body 100 and level jack 200.
Maintaining body 100 is configured on the job platform, and the maintaining part 110 of end of pre-assembled each support 21 with the setting of keeping abreast of is so that the rotating part 120 of the form that spins upside down of each support 21 that is set up in parallel rotation.Maintaining part 110 keeps support 21 by the end that clips support 21.Rotating part 120 possesses: rotation pallet 121, its with maintaining part 110 supporting for can be with axle center rotation along the level of the length direction L of support 21; Be arranged on the driven gear 122 on the maintaining part 110; Motor 123, wherein, the driven wheel 123a of motor 123 and driven gear 122 are connected by chain.This rotating part 120 makes maintaining part 110 rotation under the driving of motor 123, make spinning upside down of each support 21 of being kept by maintaining part 110 thus.
The form that the end of support 21 is inserted or extracted need to prove that preferred maintaining body 100 is when keeping support 21, so that can be arranged on the job platform movably along the length direction L of support 21.
Then, as shown in Figure 7, two supports 21 are carried out together the formal welding 10 (formal welding sequence) of main component 21a and board member 21b along the length direction L of support 21.In this formal welding sequence, use multi-electrode welder 300.
For multi-electrode welder 300, one of multi-electrode welding is a purpose with the high efficiency of MAG welding, possesses a plurality of (being two in the present embodiment) welding torch, advances along the welding position of each adjacent support 21, and produces electric arc simultaneously.This multi-electrode welder 300 can be configured in alongst on the track of L (not shown) movably, and alongst L formally welds 10 continuously.That is, by multi-electrode welder 300 is moved to position shown in Figure 7 from position shown in Figure 6, thereby alongst L formally welds 10 synchronously to each support 21.A pair of welding torch can move along the width with length direction L-orthogonal, moves welding along the welding position of each support 21.
In this formal welding sequence, after the formal welding 10 of the welding position that the length direction L along support 21 stipulates, as shown in Figure 8, make 21 rotations of each support by maintaining body 100, similarly carry out along the formal welding 10 of other welding position of the length direction L of each support 21 with Fig. 7.As shown in Figure 4, in the support 21, lateral margin (welding position of regulation) and lower lip (other welding position) fixed head member 21b on the opening portion of main component 21a.Therefore, carry out main component 21a on after the formal welding 10 of lateral margin, need make each support 21 spin upside down (Rotate 180 degree).Therefore, the rotating part 120 by maintaining body 100 makes each support 21 rotation.
Afterwards, after the formal welding 10 of having carried out whole welding positions, take off level jack 200.Therefore, as shown in Figure 9, because of the distortion that the thermal contraction of each support 21 causes, the back-flexing of the bending in bending operation, thereby the alongst L shaped linearity that becomes of each support 21.Need to prove, in this case, the maintenance of 100 pairs of each supports 21 of maintaining body is removed, and formed the degree that supports each support 21 by maintaining body 100.
Yet, in the above-described embodiment, pre-assembled two supports 21 are set up in parallel in the opposite mode of board member 21b side, and the rightabout of the imagination distortion that causes of rearward-facing formal welding 10 simultaneously applies bending to support 21, and formally weld 10, but be not limited to this.
Figure 10 is the sketch of other manufacture method of the crane spiral arm that relates to of expression present embodiment.As shown in figure 10, in bending operation, also two supports 21 after assembling in advance can be set up in parallel in the right mode in board member 21b side, and the rightabout of the imagination distortion that causes of rearward-facing formal welding 10 simultaneously applies bending (reversible deformation) to support 21.In this case, limit the central portion of each support 21 by restriction anchor clamps 201, and, extend by making this level jack 200 at both ends configuration level jack 200, be held mechanism 100 and keep the end of each support 21 of end oppositely to separate, this each support 21 is applied bending.Need to prove,, can replace above-mentioned level jack 200, the gap keeper is sandwiched the both ends that are arranged on two supports 21 though do not express among the figure.In a word, vacate the gap, and limit with gapless state (perhaps, folder is established the state of distance piece 12) for the central portion that makes two supports 21 is approaching at the both ends of 21 of two supports.The restriction of two supports, 21 central portions under this situation can be by being arranged on two supports 21 the restriction anchor clamps 201 of central portion fixing, perhaps sandwich two board member 21b fixing each other by anchor clamps (not shown).
In addition, for pre-assembling procedure and formal welding sequence, with above-mentioned same.
Need to prove that in Figure 10, the parts that are configured in the middle body of length direction L between pre-assembled each support 21 that is set up in parallel are distance pieces 12, it is used to the damage that prevents that board member 21b from contacting with each other and causing.
Need to prove, illustrated that main component 21a is illustrated as the roughly situation of コ font of cross section, but be not limited to this.Main component 21a is the member of the lengthwise shape that forms of side mouth, and at this opening portion fixed head member 21b, thereby lightweight and the high rigidization of realizing spiral arm 2 get final product.For example, main component 21a also can be cross section U font or cross section C word shape etc. roughly roughly.In addition, board member 21b also can not be dull and stereotyped, and cross sectional shape also can bending or flexing.
As mentioned above, the crane spiral arm manufacture method of present embodiment is a crane spiral arm manufacture method as follows, promptly, for sidepiece L opening and the main component 21a of the lengthwise shape that forms along its length, at the board member 21b of the opening portion of this main component 21a welding lengthwise shape, form the support 21 of the lengthwise shape hollow that constitutes crane spiral arm 2 thus.And, comprising: main component 21a and board member 21b are carried out pre-welding and assemble the pre-assembling procedure of support 21 in advance; Be set up in parallel two supports 21 after the pre-assembling, apply under the crooked state, the bending operation that two supports 21 are limited each other at the rightabout of the imagination distortion that causes towards formal welding 10; The formal welding sequence of the formal welding of two supports 21 of the state of execution restriction simultaneously.Need to prove, comprise the operation of two supports 21 being carried out together the formal welding 10 of main component 21a and board member 21b along the length direction of support 21 in the formal welding sequence.
According to this crane spiral arm manufacture method, under the state of pre-assembling support 21, the rightabout of the imagination distortion that causes towards formal welding 10 applies bending in advance to support 21, therefore can fully absorb the distortion that the thermal contraction after the formal welding 10 causes.And,, therefore can apply bending comparably to two supports 21 that constitute spiral arm 2 owing in two supports 21 after being set up in parallel pre-assembling each support 21 is applied bending.And, by two supports 21 being carried out simultaneously formal welding 10, can produce the rightabout distortional stress that thermal contraction causes comparably to two supports 21, compare with the situation that each support 21 is welded, can far form linearity, the distortion of each support 21 after lifting restrictions can be produced and suppress to be Min..Consequently, can make the crane spiral arm easily.
In addition, in the crane spiral arm manufacture method of present embodiment, behind formal welding sequence, under the state that keeps restriction, make support 21 rotations, then, carry out the formal welding of other welding position of two supports 21 simultaneously.Promptly, in formal welding sequence, comprise following operation: after the formal welding 10 of the welding position that the length direction L along each support 21 stipulates, under the form of each support 21 that keeps abreast of setting, make each support 21 rotation, and carry out the formal welding 10 of other welding position along the length direction L of each support 21 by the maintaining body 100 that is configured on the job platform.
According to this crane spiral arm manufacture method, formally weld 10 position easily by under the state that keeps restriction, making support 21 rotations, other welding position can being configured to.Therefore, can formally weld 10 operation easily.Consequently, can make the crane spiral arm easily.Need to prove, keep each support 21, and make support 21 rotations by this maintaining body 100 simultaneously, formally weld 10 position easily thereby other welding position can be configured to by utilizing maintaining body 100.Therefore, can carry out formal weld job easily.And, be arranged on the maintaining body 100 that keeps each support 21 on the job platform by being suitable for, needn't sling by crane etc. and make support 21 rotations, can carry out formal weld job easily.Consequently, can make the crane spiral arm easily.
Need to prove, in the crane spiral arm manufacture method of above-mentioned embodiment,, be illustrated as an example with deck crane as crane with spiral arm 2, but be not limited to this, also be applicable to whole cranes with the spiral arm 2 that constitutes by support 21.
Industrial applicibility
As shown above, the crane spiral arm manufacture method that the present invention relates to is suitable for making easily the crane spiral arm.
Claims (2)
1. crane spiral arm manufacture method, for sidepiece alongst opening and the main component of the lengthwise shape that forms,, form the support of the lengthwise shape hollow that constitutes the crane spiral arm thus at the board member of the opening portion welding lengthwise shape of this main component, it is characterized in that, comprising:
Pre-assembling procedure in this pre-assembling procedure, carries out pre-welding and the described support of pre-assembling with described main component and described board member;
Bending operation in this bending operation, is set up in parallel two described supports after the pre-assembling, and applies under the crooked state at the rightabout to the imagination distortion that is caused by formal welding, and two described supports are limited each other;
Formal welding sequence in this formal welding sequence, is carried out the formal welding that is in described two supports under the restriction state simultaneously.
2. crane spiral arm manufacture method according to claim 1 is characterized in that,
Behind described formal welding sequence, under the state that keeps restriction, make the support rotation, then carry out the formal welding of other welding position of described two supports simultaneously.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010130265A JP2011255986A (en) | 2010-06-07 | 2010-06-07 | Method for manufacturing crane jib |
| JP2010-130265 | 2010-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102267039A true CN102267039A (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101573435A Pending CN102267039A (en) | 2010-06-07 | 2011-06-07 | Manufacturing method for radial arm of crane |
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| Country | Link |
|---|---|
| JP (1) | JP2011255986A (en) |
| CN (1) | CN102267039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699497A (en) * | 2012-05-07 | 2012-10-03 | 河南省矿山起重机有限公司 | Crane main beam welding machine |
| CN102837161A (en) * | 2012-09-04 | 2012-12-26 | 南阳二机石油装备(集团)有限公司 | Manufacturing method and positioning and clamping device of telescopic boom body of crane |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101626791B1 (en) * | 2014-09-26 | 2016-06-02 | 한국고벨(주) | Jig for crane girder and girder manufacture |
| CN110482420A (en) * | 2019-08-16 | 2019-11-22 | 南通振华重型装备制造有限公司 | A kind of floating crane truss-type cantilever crane integral constructing method |
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| JPH10201547A (en) * | 1997-01-24 | 1998-08-04 | Astec Irie:Kk | Production of rack for storehouse |
| JP2000016763A (en) * | 1998-06-26 | 2000-01-18 | Tadano Ltd | Crane boom |
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| CN2128628Y (en) * | 1992-05-11 | 1993-03-24 | 陶鹤龄 | Thin-wall curved combination beam for crane |
| JPH10101292A (en) * | 1996-09-30 | 1998-04-21 | Tsuji Sangyo Kk | Deck crane for stevedoring |
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| CN101125400A (en) * | 2007-09-28 | 2008-02-20 | 天津二十冶建设有限公司 | Welding anti-distortion processing method for iron component |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102699497A (en) * | 2012-05-07 | 2012-10-03 | 河南省矿山起重机有限公司 | Crane main beam welding machine |
| CN102699497B (en) * | 2012-05-07 | 2014-09-24 | 河南省矿山起重机有限公司 | Crane main beam welding machine |
| CN102837161A (en) * | 2012-09-04 | 2012-12-26 | 南阳二机石油装备(集团)有限公司 | Manufacturing method and positioning and clamping device of telescopic boom body of crane |
| CN102837161B (en) * | 2012-09-04 | 2015-04-22 | 南阳二机石油装备(集团)有限公司 | Manufacturing method and positioning and clamping device of telescopic boom body of crane |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011255986A (en) | 2011-12-22 |
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