CN102581536B - Single boom section molding tool for crane booms and single boom section production technology - Google Patents

Single boom section molding tool for crane booms and single boom section production technology Download PDF

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Publication number
CN102581536B
CN102581536B CN201210060328.3A CN201210060328A CN102581536B CN 102581536 B CN102581536 B CN 102581536B CN 201210060328 A CN201210060328 A CN 201210060328A CN 102581536 B CN102581536 B CN 102581536B
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China
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joint
boom
armed
location
seat
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CN102581536A (en
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姚刚
张宏
郑鹏
韩冠军
丁剑
张中俊
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Abstract

The invention provides a single boom section molding tool for crane booms and single boom section production technology. The single boom section molding tool for crane booms includes a boom rack supporting portion and a joint positioning portion, wherein two lower chord members (106) which are used for supporting a boom section (100) of a crane boom face to surfaces of upper chord members (105) so as to support a boom rack, the boom section (100) consists of the boom rack, and the joint positioning portion is used for positioning various joints of the boom section (100). Upper planes of the lower chord members are used as positioning planes when the joints are installed and welded, accordingly, the single boom section molding tool resolves the problem that a positioning reference selected by a vertical positioning clamping device of a tool of the prior art does not conform to a designed reference of a product, positioning heights of the lower chord members with different sections do not need to be adjusted, and the single boom section molding tool is convenient in use.

Description

The single armed joint forming frock of crane arm and single armed save production technology
Technical field
The present invention relates to hoisting machinery field, more specifically, relate to single armed joint forming frock and the single armed joint production technology of crane arm.
Background technology
Along with social development, the manufacturing firm of derrick crane gets more and more, and compete more and more fierce, the production of derrick crane must to low cost, high production capacity, high efficiency develop, thus each parts in derrick crane field comprise cargo boom joint production technology and technology be faced with new challenges.
In prior art, the single armed joint production process of jib for tower crane is as follows:
1, lower boom welds with female joint by top-bottom chord frock.
2, upper and lower chord member welds with web member by upper entirety pendulum mounted welder 200 ', as shown in Figure 1, and wherein arm joint 100 ' only weldering one end female joint of crane arm.
Be connected two joint crane arm joints 100 ' as shown in Figure 2, are connected together, after regulating the linearity of two joint arm joints 100 ', upper set-back and play movement, join separately weldering male joint by 3, splice grafting head in order.
4, welding point, welds arm joint 100 ' the upper welding rotary tooling butt joint combining each corresponding joint.
5, close arm, as shown in Figure 3, each arm joint 100 ' is got up to be formed whole crane arm by pinned connection.
6, school arm, by cooling after flame heating, produces and shrinks, correct the linearity of crane arm, upper set-back and play movement.
7, tear zero open, the arm joint 100 ' of each crane arm after high-ranking officers' arm splits.
8, by the upper gathering chain of arm joint 100 ' after fractionation.
9, arm joint 100 ' is painted, form the final products of arm joint 100 '.
In above prior art, the single armed joint production technology of jib for tower crane has following shortcoming:
1, next joint arm to be waited to have saved and just can carry out conjunction bond process after the arm joint welding often saving crane arm completes, wait all arms of crane arm to save and just can carry out conjunction arm, make the semi-finished product that stock on production line is a large amount of, take a large amount of production spaces, shared place exceedes 40% of total amount.
2, the single armed joint complex manufacturing of crane arm, join soldered joint inconvenience, and structural member welding deformation problem is serious.
3, on single, the arm joint number amount of gathering chain is many, affects productive temp.
4, production line is long, and operating personnel's quantity is many, workman's amount of labour is large, intensity is high, production efficiency is low and product does not possess interchangeability.
The frock that in prior art, the single armed joint production technology of crane arm is equipped with has following shortcoming:
The diagonal of the quadrangle that the center, hole 1, saving four connector positioning seats of lower edge because of the arm of crane arm is formed requires isometric, the positional precision of four connector positioning seats of the frock that prior art is equipped with is by manually regulating when frock is installed, be difficult to reach Fixture Design requirement, so the male joint of cargo boom joint needs to join weldering when closing arm, close arm and join that weldering arm joint male joint work efficiency is low, occupied ground large and product does not possess interchangeability.
2, the positioning datum that frock perpendicular positioning clamping device is selected does not conform to product design benchmark, and design basis is plane on lower boom, and its positioning height difference of the lower boom of different cross section need regulate positioning height, uses inconvenience.
Summary of the invention
The object of the present invention is to provide a kind of the single armed joint forming frock and the single armed joint production technology that improve the production efficiency of cargo boom joint.
The invention provides a kind of single armed joint forming frock of crane arm, comprising: cantilever support portion, two lower booms saved by the arm supporting described crane arm support towards the surface of top boom the jib forming arm joint; Joint location portion, positions for each joint saved described arm.
Further, described joint location portion comprises: positioning seat bracing frame, and two described positioning seat bracing frames are relatively arranged; Joint location of winding up seat, multiple joint location seat that winds up is arranged on corresponding positioning seat bracing frame respectively, for locating the joint that winds up of the arm joint of crane arm; Lower edge joint location seat, multiple lower edge joint location seat is arranged on corresponding positioning seat bracing frame respectively, for locating the lower edge joint of described arm joint, the top of the joint location seat that winds up described in described lower edge joint location seat is positioned at.
Further, described single armed joint forming frock also comprises: pedestal, comprises first end and the second end; Two described positioning seat bracing frames are relatively arranged on first end and second end of described pedestal.
Further, described cantilever support portion is arranged on the lower boom limit assembly on each described lower edge joint location seat, and described lower boom limit assembly supports the respective end of the lower boom of described jib.
Further, described single armed joint forming frock also comprises jib positioning seat, and described jib positioning seat is used for the location of described jib being carried out to horizontal direction.
Further, described jib positioning seat comprises: supporter; Locating piece, is fixedly installed on above described supporter.
Further, described pedestal comprises locating groove, and described positioning seat bracing frame is positioned relative to described pedestal by corresponding locating groove.
Further, described pedestal is rectangle, comprise point four blocks of base stand location plates being located at described pedestal four bights, each described base stand location plate upwards forms positioning convex along the outer rim of the long side direction of described pedestal, two described positioning convex of the first end of described pedestal and two each self-formings of described positioning convex described draw-in groove of the second end; Described positioning seat bracing frame comprises base plate, and described base plate is positioned at corresponding described draw-in groove and arranges ordinatedly with corresponding draw-in groove.
Further, joint location of winding up described in each seat and each described lower edge joint location seat are fixed on corresponding positioning seat bracing frame, and are positioned relative to corresponding positioning seat bracing frame by alignment pin.
Further, joint location of winding up described in each seat and each described lower edge joint location seat comprise location seat board, the positioning sleeve that described location seat board comprises location trepanning and is arranged in the trepanning of described location, described positioning sleeve has pin shaft hole, by bearing pin, corresponding joint is connected on the seat board of described location.
Further, described positioning sleeve is selectively set to concentric locating cover or the eccentric positioning sleeve corresponding to location seat board.
Further, joint location of winding up described in seat comprises wind up bi-lug plate positioning seat and the monaural plate positioning seat that winds up; Described lower edge joint location seat comprises two lower edge male joint positioning seats and two lower edge female joint positioning seats.
Further, bi-lug plate of winding up described in positioning seat and described lower edge male joint positioning seat are arranged on a described positioning seat bracing frame; Described monaural plate positioning seat and the described lower edge female joint positioning seat of winding up is arranged on positioning seat bracing frame described in another.
Present invention also offers a kind of single armed joint production technology of crane arm, comprising: overall pendulum welder sequence, in entirety pendulum mounted welder, the required parts of overall pendulum weldering are to form the jib of the arm joint forming described crane arm; Single armed joint molding procedure, single armed joint forming frock connects described jib and forms the joint needed for described arm joint, described single armed joint forming frock for according to claim to according to any one of single armed joint forming frock.
Further, described jib comprises a top boom and two lower booms, and forming one end welding point of top boom of described jib, the other end is welding point not, is forming two ends all not welding points of two lower booms of described jib.
Further, in described entirety pendulum welder sequence, two described lower booms be close to locating surface with the end face of one end homonymy of described top boom welding point, and make described end face in single armed joint molding procedure and can weld seam be formed between corresponding joint.
Further, in described entirety pendulum welder sequence, the location basal plane that on four ends of the square tube of formation two described lower booms, plane puts the corresponding lower boom supporting seat of mounted welder to described entirety is respectively concordant.
Further, in described entirety pendulum welder sequence, the two pieces side brace connecting described top boom and top boom welding point one end of two described lower booms, be connected two described lower booms outermost end two pieces at the bottom of vertical web rod, the placement of the top boom not two pieces diagonal web member of welding point one end that connects described top boom and lower boom be all no more than the square tube end socket of corresponding lower boom.
Further, in described single armed joint molding procedure, make the joint at described top boom two ends relative to joint location seat centering of winding up accordingly, make the distance of the pin aperture centerline of respective two joints of two described lower booms equal.
Further, in described single armed joint molding procedure, make the lateral surface of four of the square tube of two described lower booms ends and the side towards top boom concordant with corresponding joint corresponding side surface.
According to the single armed joint forming frock of crane arm of the present invention, due to during assembly welding joint with plane on lower boom for plane of orientation, thus the problem that the positioning datum overcoming the selection of prior art frock perpendicular positioning clamping device does not conform to product design benchmark, and its positioning height of the lower boom of different cross section is without the need to regulating, easy to use.Crane arm single armed joint production technology in use single armed of the present invention save forming frock can also enhance productivity, improve arm joint quality, save make place, make arm save possess interchangeability.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and in the present invention, schematic description and description is for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of cargo boom joint in entirety pendulum mounted welder in prior art single armed joint production technology;
Fig. 2 is the structural representation of cargo boom joint when splice grafting head in prior art single armed joint production technology;
Fig. 3 is the structural representation of cargo boom joint when closing arm in prior art single armed joint production technology;
Fig. 4 is according to the structural representation of cargo boom joint when only bi-lug plate is winded up in installation in single armed joint production technology of the present invention;
Fig. 5 is according to the partial structurtes schematic diagram of cargo boom joint lower edge female joint side in entirety pendulum mounted welder in single armed joint production technology of the present invention;
Fig. 6 is the structural representation according to cargo boom joint lower edge female joint in single armed joint production technology of the present invention;
Fig. 7 is the plan structure schematic diagram of Fig. 6;
Fig. 8 is the structural representation according to cargo boom joint lower edge male joint in single armed joint production technology of the present invention;
Fig. 9 is the plan structure schematic diagram of Fig. 8;
Figure 10 saves the structural representation of the monaural plate that winds up according to cargo boom in single armed joint production technology of the present invention;
Figure 11 is according to the structural representation of cargo boom joint in single armed joint forming frock in single armed joint production technology of the present invention;
Figure 12 is the plan structure schematic diagram of Figure 11;
Figure 13 is that single armed joint production technology center tap according to the present invention assembles complete cargo boom joint structural representation;
Figure 14 is the plan structure schematic diagram of Figure 13;
Figure 15 is according to the structural representation of cargo boom joint in welding rotary tooling in single armed joint production technology of the present invention;
Figure 16 is the perspective view of the single armed joint forming frock according to crane arm of the present invention;
Figure 17 is the main TV structure schematic diagram of pedestal of the single armed joint forming frock according to crane arm of the present invention;
Figure 18 is the perspective view saving the connection supports frame of forming frock according to the single armed of crane arm of the present invention;
Figure 19 is the main TV structure schematic diagram saving the connection supports frame of forming frock according to the single armed of crane arm of the present invention;
Figure 20 is the plan structure schematic diagram of Figure 19; And
Figure 21 is the main TV structure schematic diagram saving the located lateral frame of forming frock according to the single armed of crane arm of the present invention.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
In the present embodiment, the flow process of the single armed joint production technology of crane arm is as follows: the blanking → entirety pendulum weldering → welding jib → shaping → welding point of single armed joint → upper gathering chain → paint.
Wherein, welding jib is weld the jib intermediate products after combining to pendulum to weld.
In welding point operation, as shown in figure 15, weld to form arm joint 100 by saving the butt joint of the joint of the arm after carrying out backing welding to jib and joint in molding procedure intermediate products feeding rotary soldering tool 400 at single armed.The process of welding point adopts existing welding rotary tooling 400, need control the center of welding rotary tooling 400 when welding rotary tooling 400 and designing well, utilizes and manually rotates arm joint 100 during welding point.
In upper gathering chain operation, the arm joint 100 after welding point is directly delivered to gathering chain.
Welding deformation separates by the single armed joint production technology of the present embodiment, operation is divided carefully, the arm of crane arm is made to save a single armed joint shaping, the shaping arm joint of namely cancelling of single armed joint closes bond process, crane arm arm joint weld complete after disposal molding, postwelding arm joint directly goes up gathering chain, paint, has cut splice grafting head, has closed arm, each operation of school arm, enhanced productivity.
Below the master operation " overall pendulum weldering " in the single armed joint production technology of the crane arm of the present embodiment and " single armed joint is shaping " are described in detail.
One, overall pendulum weldering
The object of overall pendulum welder sequence, for obtaining jib intermediate products, namely not yet completes the jib of welding.As shown in Figure 4, the jib of the present embodiment save 100 with finished product arm compared with only assembly welding to wind up bi-lug plate 101, and not assembly welding lower edge male joint 103, lower edge female joint 104 and the monaural plate 102 that winds up.Jib by a top boom 105, two lower booms 106, connect top boom 105 and lower boom 106 skew back web member 108, be connected bi-lug plate 101 of winding up and form with the side brace 107 of lower boom 106, the end vertical web rod 109 being connected two lower booms 106 and end diagonal web member 110 assembly welding.
After lower good cargo boom joint material requested, pendulum mounted welder 200 pendulum overall on each parts of composition jib is welded into assembly.
For utilizing existing frock, reduce the waste of existing frock, overall pendulum welder sequence adopts existing entirety pendulum mounted welder as shown in Figure 1, and the single armed joint production technology in order to adapt to the present embodiment, the adaptive improvement of part has been pretended to existing entirety pendulum welder.
As shown in Figure 5, in overall pendulum mounted welder 200, original lower boom supporting seat 240 is connected to landing nipple 261 by bearing pin 250, placed between the public access head end end face and the corresponding end-faces of landing nipple 261 of lower boom 106 and locate backing plate 262, backing plate 262 the face down surface of chord member 106 public access head end end face in location is locating surface.Thus the accurate location of the public access head end of two lower booms 106 can be realized, reserved joint welding accurately simultaneously.
In order to realize the accurate location of jib in longitudinal direction in follow-up single armed joint molding procedure, keep concordant with the overall location basal plane 241 putting the corresponding lower boom supporting seat 240 of mounted welder 200 and clamping and positioning as plane (namely towards the side of top boom 105) on four ends of two square tubes of lower boom 106.
In addition, in order to reduce welding deformation, in the present embodiment, the two pieces side brace 107 connecting top boom 105 and the bi-lug plate end that winds up of two lower booms 106, be connected two lower booms 106 outermost two pieces at the bottom of the placement of two pieces diagonal web member 108 of vertical web rod 109, the connection top boom 105 of the rightmost side and the monaural plate end that winds up of lower boom 106 be no more than the square tube end socket of lower boom 106.
Two, single armed joint is shaping
In single armed joint molding procedure, be equipped with special single armed joint forming frock 300, in the description of single armed joint molding procedure, only be illustrated the joint use procedure of forming frock 300 of involved single armed and corresponding construction, other concrete structure of single armed joint forming frock 300 is by description special later.
The main points point (i.e. four joints of lower boom connection and two otic placodes being connected with top boom) of major control cargo boom joint in single armed joint molding procedure.
The monaural plate 102 that winds up shown in lower edge male joint 103 shown in lower edge female joint 104 shown in jib shown in Fig. 4, Fig. 6 to Fig. 7, Fig. 8 to Fig. 9 and Figure 10 is inserted respectively the single armed joint forming frock 300 shown in Figure 11 to Figure 12, location is assembly welding jib and each joint also, and the complete arm shown in the final Figure 13 to Figure 14 that formed saves 100.In the present embodiment, the monaural plate 102 that winds up is arranged on the right side of top boom 105, and lower edge male joint 103 is arranged on the left of lower boom 106, and lower edge female joint 104 is arranged on the right side of lower boom 106.
Bi-lug plate of winding up 101 welds when welding jib, as shown in Figure 11 to Figure 12, by bearing pin, bi-lug plate 101 of winding up is fixed on single armed and saves winding up in bi-lug plate positioning seat 350 of forming frock 300, thus located in the position of length direction by jib.And jib relies on four the jib positioning seats 330 be arranged on pedestal 310 to realize in the location of transverse direction.
Bi-lug plate of winding up positioning seat 350 comprises the location seat board with through hole of pair of parallel setting, insert the eccentric positioning sleeve in the through hole of a pair location seat board respectively, bi-lug plate of winding up 101 is arranged between two eccentric positioning sleeves, and be connected on the seat board of location by bearing pin bi-lug plate 101 of winding up, thus achieve the centering of bi-lug plate 101 of winding up.There is gap if winded up between bi-lug plate 101 and eccentric positioning sleeve, voussoir can be used to assist and carry out centering.Wherein, eccentric positioning sleeve can adopt concentric locating cover to replace as required.By selecting eccentric positioning sleeve or concentric locating cover in varied situations, the needs of the arm joint of diverse location in crane arm can be adapted to.
The monaural plate positioning seat 370 that winds up comprises the location seat board with through hole of pair of parallel setting, insert the concentric locating cover in the through hole of a pair location seat board respectively, the monaural plate 102 that winds up is arranged between a pair location seat board, and with bearing pin will wind up monaural plate 102 be connected to location seat board on, a centering cushion block can be respectively inserted, the centering of monaural plate 102 thus realization is winded up in the space of the both sides of the monaural plate 102 that winds up.
Single armed joint forming frock 300 further comprises two lower edge female joint positioning seats 360 and two lower edge male joint positioning seats 340, by two lower edge female joint positioning seats 360 and two lower edge male joint positioning seats 340 to corresponding joint location, the distance that can realize the pin aperture centerline of respective two joints of two lower booms 106 is easily equal.
The present embodiment single armed joint forming frock 300 is adopted to overcome in prior art the problem must closed arm and join weldering male joint.Also without the need to passing through the linearity of school arm process control crane arm and upper set-back.
Lower edge female joint positioning seat 360 comprises the location seat board with through hole of pair of parallel setting, insert the positioning sleeve in the through hole of a pair location seat board respectively, lower edge female joint 104 is arranged between a pair location seat board, and lower edge female joint 104 be connected on the seat board of location with bearing pin, thus achieve the location of lower edge female joint 104.Lower edge female joint 104 lateral surface should be concordant with the lateral surface of the square tube of lower boom 106.The lower boom 106 of jib is carried out the location of above-below direction with lower boom limit assembly 380.
Connection and positioning mode between lower edge male joint 103 with lower edge male joint positioning seat 340 is identical with the connection and positioning mode between lower edge female joint 104 and lower edge female joint positioning seat 360, no longer describes at this.
It should be noted that, the positioning sleeve of lower edge male joint positioning seat 340 and lower edge female joint positioning seat 360 can according to the arm selected parts of different cross section with corresponding eccentric positioning sleeve or select concentric locating cover.The arm joint of different cross section controls the center, hole of winding up that cargo boom the saves distance to the upper plane of lower edge by matching eccentric positioning sleeve or concentric locating cover for the positioning seat of each lower edge joint.Wherein, it is different to center, lower edge hole that each cargo boom saves center, hole of winding up, but center, hole of winding up is identical to the distance of the upper plane of lower edge.
Known by describing above, due to during assembly welding joint with plane on lower boom for plane of orientation, thus the problem that the positioning datum overcoming the selection of prior art frock perpendicular positioning clamping device does not conform to product design benchmark, and its positioning height of the lower boom of different cross section is without the need to regulating, easy to use.
The arm joint intermediate products that not carrying out in single armed joint molding procedure after the combination that formed is welded also need to weld rotary tooling 400 to carry out winding up the welding of monaural plate 102, lower edge male joint 103, lower edge female joint 104, namely enters welding point operation.
Operation is divided carefully by the single armed joint production technology of the present embodiment, by the pendulum weldering of the jib of crane arm entirety and weld multistep molding.Disperseed by welding deformation, the welding deformation that cargo boom is saved is effectively controlled: the width being controlled crane arm by entirety pendulum welder sequence; Control the linearity of crane arm and upper set-back by single armed joint molding procedure, make two lower edges isometric; Reasonable arrangement assembly welding order and welding sequence; Anti-deformation and reversible deformation position are correctly set.Once realize single armed joint shaping, after welding point, directly go up gathering chain, paint, cut splice grafting head, close arm, school arm operation, improve the rate of coming into force.
Below with reference to Figure 16 to Figure 21, the single armed joint forming frock 300 of the present embodiment used in above single armed joint production technology is described.
As shown in figure 16, single armed joint forming frock 300 comprises rectangular pedestal 310, is separately positioned on the positioning seat bracing frame 320 at pedestal 310 two ends, is arranged at two lower edge male joint positioning seats 340 on left end positioning seat bracing frame 320 and bi-lug plate positioning seat 350 that winds up, is arranged at two lower edge female joint positioning seats 360 on right-hand member positioning seat bracing frame 320 and one and winds up monaural plate positioning seat 370 and four jib positioning seats 330 being arranged between two positioning seat bracing frames 320.Two lower edge male joint positioning seats 340 are positioned at above the bi-lug plate positioning seat 350 that winds up, and two lower edge female joint positioning seats 360 are positioned at above the monaural plate positioning seat 370 that winds up.In the square tube that arranging like this can make lower boom 106, plane is as locating surface, thus overcomes the problem that positioning datum that prior art frock perpendicular positioning clamping device selects do not conform to product design benchmark.Single armed joint forming frock 300 further comprises four lower boom limit assemblies 380 of four ends of two lower booms for difference supporting arm frame, also namely to position the above-below direction of jib lower boom 106.Wherein, each lower edge female joint positioning seat 360 and lower edge male joint positioning seat 340 all arrange a lower boom limit assembly 380.
As shown in figure 17, pedestal 310 is overall structure, comprise upper cover plate 313, lower cover 316, be arranged at longitudinal riser 312 between upper cover plate 313 and lower cover 316 and horizontal riser 315, be arranged at the base stand location plate 311 in upper cover plate 313 4 bights respectively, be arranged at the bedplate 314 of lower cover 316 bottom and to be arranged at respectively on upper cover plate 313 and between the base stand location plate 311 of two blocks, left side and seat boards in the middle of between the base stand location plate 311 of two blocks, right side two pieces.Wherein for objects such as saving materials, the middle part of upper cover plate 313 and lower cover 316 has hole, and correspondingly, the longitudinal riser 312 of polylith and horizontal riser 315 have the different length adapting to upper cover plate 313 and lower cover 316 shape.Wherein, four base stand location plates 311 have positioning convex upwards along the outer rim of the long side direction of pedestal 310, in figure left side two or two the base stand location plates 311 in right side positioning convex between form draw-in groove, draw-in groove be used for the positioning seat bracing frame 320 of corresponding side is positioned.
As shown in Figure 18 to 20, constitute the rectangular frame structure of a upper middle position with inverted trapezoidal breach by many supported rod erectings 324, cross bar 325, bracing diagonal 326 and knighthead 329.The facade arranging each positioning seat of frame structure is provided with support panel 321, and the relevant position on support panel 321 is provided with the screwed hole and dowel hole of installing each positioning seat.In the following description, before being claimed by the facade that each positioning seat is set of frame structure, the back side is called with relative one side above.The bottom surface of frame structure is provided with base plate 323.At the end face of frame structure, two pieces of top top boards 322 are set respectively.The end face of inverted trapezoidal indentation, there is also provided with middle part top board 327.The position be welded to each other between each rod member at the back side of frame structure is all provided with one piece of stiffener 328.
As shown in figure 16, after positioning seat bracing frame 320 is in place on pedestal 310, the limit in frame structure two sides of base plate 323 is stuck between the machined draw-in groove of positioning convex formation of corresponding two base stand location plates 311 just, thus can ensure that position and the depth of parallelism of positioning seat bracing frame 320.
After each joint location seat is installed on corresponding positioning seat bracing frame 320 by use alignment pin and screw, can by the position of the connecting hole on each otic placode of each joint location seat control cargo boom joint and joint.
Wherein, each lower edge male joint positioning seat 340 and lower edge female joint positioning seat 360 are provided with lower boom limit assembly 380, are secured by bolts in the bottom of corresponding location seat board.
Available machine finish ensures the positional precision of each positioning seat of single armed joint forming frock 300, each joint location seat adopts alignment pin location, support panel on the positioning seat bracing frame 320 at two ends adopts draw-in groove restriction, thus the positional precision of each joint location seat can be made to meet the designing requirement of single armed joint forming frock, ensure that the nipple orifice centre distance of two lower booms 106 is isometric.
As shown in figure 21, jib positioning seat 330, for carrying out the location of horizontal direction to jib, comprises supporter 331, the locating piece 332 be arranged on supporter 331.Wherein, the locating surface of each locating piece 332 of four jib positioning seats 330 is all arranged at the outside of corresponding lower boom 106.Jib positioning seat 330 controls the center of cargo boom joint 100 in single armed joint forming frock 300.
It should be noted that, above embodiment is not construed as limiting the present invention.In the embodiment that another is alternative, can after first blanking by overall pendulum welder sequence, form arm joint intermediate products not with any joint and otic placode, the more each corresponding joint of this arm joint intermediate products and upper and lower chord member or otic placode are carried out pendulum is soldered to be connect.Its technological process is; Blanking → integral assembly welding is assembly welding lower edge joint, the otic placode that winds up → welding jib intermediate products → upper single armed joint forming frock assembly welding joint → welding point → upper gathering chain → paint not.
As can be seen from the above description, the crane arm of the present embodiment single armed joint production technology compared with prior art its advantage is as follows:
The single armed joint production technology of the present embodiment goes out arm cycle time, and often finishing can above gathering chain once saving, and the cycle is short, and after prior art production technology will finish whole one arm, ability entirety go out arm, and the cycle is long;
The single armed joint production technology of the present embodiment can ensure product quality better, by cancelling conjunction arm, the school firer's sequence in prior art production technology, improve production efficiency, saved a large amount of site area, the shaping utilization of area rate of crane arm single-unit improves 62.5%;
The single armed joint production technology of the present embodiment follows " operation dispersion " principle, reduce the production time of crane arm production line, it is in units of saving that crane arm single armed joint molds the arm cycle, 6.67 minutes/joint, going out the arm cycle compared with prior art production technology is in units of bar, 1.6 hours/bar, shorten out the arm cycle greatly, decrease line stock;
The interchangeability 100% of the cargo boom joint that the single-unit utilizing the single armed of the present embodiment joint production technology to produce is shaping; The linearity of crane arm, upper set-back can reach 100% and meet work technological requirement;
In the single armed joint production technology of the present embodiment, single armed joint forming frock has self-checking function, and the off-dimension jib made for entirety pendulum welder sequence cannot put into single armed joint forming frock.Out-of-size otic placode and connector also cannot normal mounting;
The single armed joint production technology of the present embodiment, for the production technology of prior art, has disperseed welding deformation amount more equably, and utilizes special single armed joint forming frock to ensure that the relative position relation of main points point.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (20)

1. a single armed joint forming frock for crane arm, is characterized in that, comprising:
Cantilever support portion, when realizing assembly welding joint by two lower booms (106) supporting arm joint (100) of described crane arm towards the jib that the upper plane of top boom (105) supports composition arm joint (100) with the upper plane of described lower boom (106) for plane of orientation;
Joint location portion, for positioning each joint of described arm joint (100).
2. single armed joint forming frock according to claim 1, it is characterized in that, described joint location portion comprises:
Positioning seat bracing frame (320), two described positioning seat bracing frames (320) are relatively arranged;
Joint location of winding up seat (350,370), multiple joint location seat that winds up (350,370) is arranged on corresponding positioning seat bracing frame (320) respectively, for locating the joint that winds up of arm joint (100) of crane arm;
Lower edge joint location seat (340,360), multiple lower edge joint location seat (340,360) is arranged on corresponding positioning seat bracing frame (320) respectively, for locating the lower edge joint of described arm joint (100), the top of joint location seat (350,370) of winding up described in described lower edge joint location seat (340,360) is positioned at.
3. single armed joint forming frock according to claim 2, is characterized in that, described single armed joint forming frock also comprises:
Pedestal (310), comprises first end and the second end;
Two described positioning seat bracing frames (320) are relatively arranged on first end and second end of described pedestal (310).
4. single armed joint forming frock according to claim 2, it is characterized in that, described cantilever support portion is for being arranged on the lower boom limit assembly (380) on each described lower edge joint location seat (340,360), and described lower boom limit assembly (380) supports the respective end of the lower boom (106) of described arm joint.
5. single armed joint forming frock according to any one of claim 1 to 4, it is characterized in that, described single armed joint forming frock also comprises jib positioning seat (330), and described jib positioning seat (330) is for carrying out the location of horizontal direction to described jib.
6. single armed joint forming frock according to claim 5, it is characterized in that, described jib positioning seat (330) comprising:
Supporter (331);
Locating piece (332), is fixedly installed on described supporter (331) top.
7. single armed joint forming frock according to claim 3, it is characterized in that, described pedestal (310) comprises locating groove, and described positioning seat bracing frame (320) is positioned relative to described pedestal (310) by corresponding locating groove.
8. single armed joint forming frock according to claim 7, is characterized in that,
Described pedestal (310) is rectangle, comprise point four pieces of base stand location plates (311) being located at described pedestal (310) four bights, each described base stand location plate (311) upwards forms positioning convex along the outer rim of the long side direction of described pedestal (310), two described positioning convex of the first end of described pedestal (310) and two each self-formings of described positioning convex described draw-in groove of the second end;
Described positioning seat bracing frame (320) comprises base plate (323), and described base plate (323) is positioned at corresponding described draw-in groove and arranges ordinatedly with corresponding draw-in groove.
9. the single armed joint forming frock according to any one of claim 2 to 4, it is characterized in that, joint location of winding up described in each seat (350,370) and each described lower edge joint location seat (340,360) are fixed on corresponding positioning seat bracing frame (320), and are positioned relative to corresponding positioning seat bracing frame (320) by alignment pin.
10. single armed joint forming frock according to claim 9, it is characterized in that, joint location of winding up described in each seat (350,370) and each described lower edge joint location seat (340,360) comprise location seat board, the positioning sleeve that described location seat board comprises location trepanning and is arranged in the trepanning of described location, described positioning sleeve has pin shaft hole, by bearing pin, corresponding joint is connected on the seat board of described location.
11. single armed joint forming frocks according to claim 10, it is characterized in that, described positioning sleeve is selectively set to concentric locating cover or the eccentric positioning sleeve corresponding to location seat board.
12. according to any one of claim 2 to 4 single armed joint forming frock, it is characterized in that,
The described joint location seat that winds up (350,370) comprises wind up bi-lug plate positioning seat (350) and the monaural plate positioning seat (370) that winds up;
Described lower edge joint location seat (340,360) comprises two lower edge male joint positioning seats (340) and two lower edge female joint positioning seats (360).
13. single armed joint forming frocks according to claim 12, is characterized in that,
Described wind up bi-lug plate positioning seat (350) and described lower edge male joint positioning seat (340) are arranged on a described positioning seat bracing frame (320);
Described wind up monaural plate positioning seat (370) and described lower edge female joint positioning seat (360) are arranged on positioning seat bracing frame (320) described in another.
The single armed joint production technology of 14. 1 kinds of crane arms, is characterized in that, comprising:
Overall pendulum welder sequence, at the required parts of the upper overall pendulum weldering of entirety pendulum mounted welder (200) to form the jib of arm joint (100) forming described crane arm;
Single armed joint molding procedure, at the upper joint connecting described jib and formed needed for described arm joint (100) of single armed joint forming frock (300), described single armed joint forming frock (300) is the single armed joint forming frock according to any one of claim 1 to 13.
15. single armed joint production technologies according to claim 14, it is characterized in that, described jib comprises a top boom (105) and two lower booms (106), at one end welding point of the top boom (105) of the described jib of formation, the other end is welding point not, is forming two ends all not welding points of two lower booms (106) of described jib.
16. single armed joint production technologies according to claim 15, it is characterized in that, in described entirety pendulum welder sequence, two described lower booms (106) be close to locating surface with the end face of one end homonymy of described top boom (105) welding point, and make described end face single armed joint molding procedure in and can weld seam be formed between corresponding joint.
17. single armed joint production technologies according to claim 15, it is characterized in that, in described entirety pendulum welder sequence, on four ends forming the square tube of two described lower booms (106), put the location basal plane (241) of the corresponding lower boom supporting seat (240) of mounted welder (200) respectively with described entirety concordant for plane.
18. single armed joint production technologies according to claim 15, it is characterized in that, in described entirety pendulum welder sequence, connect the two pieces side brace (107) of top boom welding point one end of described top boom (105) and two described lower booms (106), connect vertical web rod (109) at the bottom of the two pieces of the outermost end of two described lower booms (106), the placement of the top boom connecting described top boom (105) and lower boom (106) the not two pieces diagonal web member (108) of welding point one end is all no more than the square tube end socket of corresponding lower boom (106).
19. single armed joint production technologies according to claim 15, it is characterized in that, in described single armed joint molding procedure, make the joint at described top boom (105) two ends relative to the joint location seat that winds up accordingly (350,370) centering, make the distance of the pin aperture centerline of respective two joints of two described lower booms (106) equal.
20. single armed joint production technologies according to claim 15, it is characterized in that, in described single armed joint molding procedure, make the lateral surface of four ends of the square tube of two described lower booms (106) and the side towards top boom (105) concordant with corresponding joint corresponding side surface.
CN201210060328.3A 2012-03-08 2012-03-08 Single boom section molding tool for crane booms and single boom section production technology Active CN102581536B (en)

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