CN102877636B - Built-in truss used during installation of C-shaped plates and hoisting method for same - Google Patents
Built-in truss used during installation of C-shaped plates and hoisting method for same Download PDFInfo
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Abstract
The invention discloses a built-in truss used during installation of C-shaped plates and a hoisting method for the same. The built-in truss comprises a middle truss perpendicular to the ground, and a plurality of frame-shaped truss units are sequentially connected to form the middle truss; inclined struts are symmetrically arranged on two side surfaces of the middle truss; and a plurality of layers of working platforms parallel to the ground are arranged on the middle truss, each layer of working platforms is symmetrically arranged on two sides of the middle truss, one end of each working platform is fixed to the middle truss, and the working platforms are disposed above the inclined struts. The hoisting method includes that a traveling crane perpendicularly hoists the C-shaped plates; openings of the C-shaped plates face the middle truss; the traveling crane translates the C-shaped plates; and the C-shaped plates perpendicularly descend after being in contact with the corresponding working platforms, so that the C-shaped plates are fixedly installed. The built-in truss and the hoisting method have the advantages that influence of weights of the C-shaped plates is avoided, the C-shaped plates are stressed by lateral force for preventing the C-shaped plates from tipping, and requirements of the C-shaped plates on the rigidity and the strength of the truss are lowered; the difficult problem of high-altitude construction is solved; and installation cost is saved.
Description
Technical field
The present invention relates to frock field, especially relate to the hanging method of girder-embedded and C shape plate when C shape plate is installed.
Background technology
The C shape plate of large-scale drop press is the vitals of forging press.The installation of C shape plate is the key point that whole frame is installed, due to C shape plate be belong to thin-wall part, rod member that elongated and two is laid particular stress on, therefore by edge-on, C shape plate to stand up in process to setting that to control its distortion (referring to the elastic deformation of C shape plate and the direction of distortion) and control C shape plate standing up the impact that produces in center of gravity process and rocking are all difficult points of C shape plate installation.The distortion controlling C shape plate just ensure that the precision (gap of the binding face of C shape plate and other workpiece) that frame is installed afterwards, and control C shape plate was standing up the impact that produces in center of gravity process and rocking, the controllable operating of the installation realized.Long 36.19 meters, wide 4.65 meters, thick 0.35 meter of the C shape plate of the large-scale drop press of 800MN, weight 250 tons, quantity is 20 (totally 5000 tons), and C shape plate profile belongs to slender rod piece, and is the thin-wall part that two is laid particular stress on.How in its installation process, providing location, and prevent from tumbling, is the primary study content that press is installed.
The large press of this kind of structure is First at home, does not have ripe supporting way, and general employing arranges truss principal around press, is called for short external truss, this results in two problems:
Truss use amount is huge, through our primary Calculation, reach and both meet the stable requirement of strength of C shape plate, meet again the pinpoint rigidity requirement of C shape plate, need truss about 2200 tons, according to 30,000 yuan/ton of calculating, only stablizing truss one just needs frock expense about 6,600 ten thousand yuan; Because truss is arranged on around press, must arrange complicated heavy components hoisting passage, not only truss set-up technology requires high, also makes heavy components hoisting more complicated.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming above-mentioned prior art, the hanging method of girder-embedded and C shape plate when providing a kind of C shape plate to install, this girder-embedded and hanging method avoids supporting C-shaped plate own wt dexterously, force way transfers the lateral force preventing it from tumbling to, significantly reduces rigidity, the requirement of strength of the installation of C shape plate to truss; Efficiently solve high-altitude construction difficult problem; Saved installation cost, decrease the distortion of C shape plate in hoisting process, rocking of generation is little, and the clamping level of the C shape plate of same position is high.
Object of the present invention is achieved through the following technical solutions: C shape plate install time girder-embedded, comprise the intermediate truss perpendicular to ground, described intermediate truss is connected and composed successively by several frame-type unit framves, and frame-type unit frame is made up of some fastener for connection; Two Side symmetrical of intermediate truss are provided with diagonal brace, and diagonal brace one end and intermediate truss are fixed, and the other end and ground are fixed; Described intermediate truss is provided with some layers working platform parallel to the ground, every layer of working platform is symmetricly set on the both sides of intermediate truss, and working platform one end and intermediate truss are fixed, the other end is arranged on intermediate truss outside, and working platform is arranged on the top of diagonal brace.
Further, the bottom of described working platform is provided with some groups of support bars, and the two ends of support bar connect with corresponding working platform and intermediate truss respectively.
In the bottom of every one deck working platform, support bar is by bolt or other modes, be fixed on intermediate truss, compact in overall structure, utilize the firmness of truss to ensure the stable of working platform simultaneously, when installing, working platform due to the stressed excessive situation occurring bending or other distortion of local, can not ensure that the safety of use.
Further, described working platform comprises first floor working platform, second layer working platform, third layer working platform and the 4th layer of working platform, wherein the height of first floor working platform is all identical with the height of intermediate truss with the height of second layer working platform, and first floor working platform and second layer working platform are right-angled intersection arranges, second layer working platform and diagonal brace are arranged on the same side of intermediate truss.
Further, described third layer working platform is arranged between first floor working platform and diagonal brace, and third layer working platform and first floor working platform are arranged on the same side of intermediate truss, the sidewall that the sidewall of third layer working platform is corresponding with first floor working platform is arranged in same plane.
Further, described 4th layer of working platform is arranged between diagonal brace and third layer working platform, and the 4th layer of working platform and diagonal brace are arranged on same side, and the support bar below the 4th layer of working platform connects with corresponding diagonal brace.Because the area of working platform is large, and the partial pressure of C shape plate acts on working platform, operating personnel also can stand on working platform and carry out work, easily there is distortion in working platform, especially away from the region of intermediate truss, so adopt support bar to be supported the position away from intermediate truss, ensure the stability of working platform.
Further, the upper surface of described diagonal brace is provided with cat ladder, cat ladder towards with diagonal brace towards identical, and the two ends of cat ladder are connected with ground and intermediate truss respectively, and cat ladder is arranged on the below of the 4th layer of working platform.
Cat ladder is mounted on the upper surface of diagonal brace, and operating personnel's is upper and lower, and because the volume of equipment is large, operating personnel are many, creep up and down at intermediate truss if adopt, danger coefficient is high, consume one's strength large, and efficiency is slow, by cat ladder, the gradient is little, safe ready more of walking.
The hanging method of C shape plate, comprises the steps;
A () utilizes first floor working platform and second layer working platform to be divided into four parts separated respectively by girder-embedded, by driving by C shape plate vertical lifting, until C shape plate is vertical with level ground, there is certain distance on bottom and the ground of C shape plate, and the opening of C shape plate is towards intermediate truss, utilize driving by the translation of C shape plate, make the sidewall of the sidewall of C shape plate and first floor working platform in same level, control driving again, C shape plate level is moved, until the end face of C shape plate contacts with second layer working platform, with corresponding first floor working platform while of sidewall, third layer working platform contacts, after the opening inner side of C shape plate contacts with the 4th layer of working platform, C shape plate is vertically declined, snap in the mounted groove in girder-embedded bottom, realize fixing the installation of C shape plate,
B () repeats step (a), by girder-embedded other three the upper C shape plates of part lifting, the C shape plate of four parts, all towards intermediate truss, forms cross shape around first floor working platform and second layer working platform;
C () repeats step (a) and step (b), some blocks of C shape plates on girder-embedded four parts lift all successively, C shape plate in each part is fitted all successively, after the C shape plate of all parts has all lifted, then by bolt, the C shape plate in each part is fixed as overall structure.
During lifting C shape plate, due to length structure and the thickness of C shape plate, in order to prevent it to be out of shape, be all adopt to crouch to be placed on level ground, so usually adopt secondary method for turning when lifting.
Further, step (a) part in four parts is utilized first to lift good whole C shape plates when also C shape plate can be lifted, the end face of each C shape plate all contacts with second layer working platform, with corresponding first floor working platform while of sidewall, third layer working platform contacts, after the opening inner side of C shape plate contacts with the 4th layer of working platform, C shape plate is vertically declined, snap in the mounted groove in girder-embedded bottom, realize fixing the installation of C shape plate, by bolt the C shape plate in this part all penetrated again and be fixed as entirety, remaining three parts are all lifted according to above-mentioned action successively and fixes C shape plate, the C shape plate of each part is the C shape plate lifting other parts after adopting lifting to fix the C shape plate of this part again, complete the lifting work to all C shape plates.
In sum, the invention has the beneficial effects as follows:
(1) this girder-embeddedly avoids supporting C-shaped plate own wt dexterously, and force way transfers the lateral force preventing it from tumbling to, significantly reduces C shape plate and installs rigidity to truss, requirement of strength;
(2) this girder-embedded can built-in cat ladder, operating platform, efficiently solves high-altitude construction difficult problem;
(3) by scheme comparison, frock weight about 2000 tons saved by more external platform, calculates, escapable cost 60,000,000 by 30,000/ton;
(4) at hoisting process, decrease the frequency that C shape plate rocks, be more prone to location, because the center of gravity of C shape plate and the lifting center of C shape plate hoisting tool are on same vertical line, therefore just reach static balance when C shape plate winches to upright position and be applicable to installing.
Accompanying drawing explanation
Fig. 1 is girder-embedded schematic diagram of the present invention;
Fig. 2 is X-direction displacement-curve of load figure;
Fig. 3 is Y-direction displacement-curve of load figure.
Mark and corresponding component title in accompanying drawing: 1-diagonal brace; 2-cat ladder; 3-the four layer of working platform; 4-third layer working platform; 5-second layer working platform; 6-first floor working platform; 7-intermediate truss.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment 1:
As shown in Figure 1, C shape plate install time girder-embedded, comprise the intermediate truss 7 perpendicular to ground, described intermediate truss 7 is connected and composed successively by several frame-type unit framves, and frame-type unit frame is made up of some fastener for connection; Two Side symmetrical of intermediate truss 7 are provided with diagonal brace 1, and diagonal brace 1 one end and intermediate truss 7 are fixed, and the other end and ground are fixed; Described intermediate truss 7 is provided with some layers working platform parallel to the ground, every layer of working platform is symmetricly set on the both sides of intermediate truss 7, and working platform one end and intermediate truss 7 are fixed, it is outside that the other end is arranged on intermediate truss 7, and working platform is arranged on the top of diagonal brace 1.For convenience of describing, diagonal brace 1 being divided into left and right diagonal brace, considering that truss needs the effect of bearing C shape plate unbalance loading, and truss integral higher (height overall is 28.9m), in order to improve resistance to overturning, devise left and right inclined support structure.The bottom of intermediate truss 7 is connected with press ship template, is connected bottom left and right diagonal brace with ground.Therefore all degree of freedom of eight nodes bottom four, the bottom node of intermediate truss 7 and left and right diagonal brace are retrained.Adopt " girder-embedded ", need sub-truss about 200 tons, according to 30,000 yuan/ton of calculating, about need frock expense 6,000,000 yuan, considerably reduce frock expense, and do not need to arrange hoisting passage, simplify the hoisting of heavy components.
The bottom of described working platform is provided with some groups of support bars, and the two ends of support bar connect with corresponding working platform and intermediate truss 7 respectively.Support bar provides support working platform, and prevent in loading process, working platform is dip-parallel.
Described working platform comprises first floor working platform 6, second layer working platform 5, third layer working platform 4 and the 4th layer of working platform 3, wherein the height of first floor working platform 6 is all identical with the height of intermediate truss 7 with the height of second layer working platform 5, and first floor working platform 6 is arranged in right-angled intersection with second layer working platform 5, second layer working platform 5 and diagonal brace 1 are arranged on the same side of intermediate truss 7.
Described third layer working platform 4 is arranged between first floor working platform 6 and diagonal brace 1, and third layer working platform 4 and first floor working platform 6 are arranged on the same side of intermediate truss 7, the sidewall that the sidewall of third layer working platform 4 is corresponding with first floor working platform 6 is arranged in same plane.
Described 4th layer of working platform 3 is arranged between diagonal brace 1 and third layer working platform 4, and the 4th layer of working platform 3 is arranged on same side with diagonal brace 1, and the support bar below the 4th layer of working platform 3 connects with corresponding diagonal brace 1.
The load that under consideration the most unfavorable processing condition, truss is subject to is: bearing capacity, dead load suffered on the lateral force that 400 millimeters, C shape plate deviation of gravity center support edge produces, shock loading (consideration dynamic load factor), each working platform.
C shape plate lateral force is calculated as follows:
Static load:
F
s=GL
1/L
2
Dynamic loading:
F
d=K
dF
s
In formula: F
sfor the lateral force that C shape plate produces; G is the gravity of C shape plate; L
1for the arm of force of gravity G; L
2for F
sthe arm of force; F
dfor the shock loading that C shape plate produces; K
dfor dynamic load factor, get K
d=5.Calculate F
s=27.6kN, F
d=138kN.
Each working platform mainly bears workman, erecting tools, jack deadweight and jack operational forces.According to the effect of each platform, load distribution is as follows: first floor working platform 6, second layer working platform 5, third layer working platform 4 bear the load of 50kN separately, and the 4th layer of platform bears the load of 400kN.
Structure according to frock truss real work situation and ground limits, if asymmetric about designed trussed construction, so stressed stress state with the stressed generation in right side and deformation different on the left of truss, again according to different load combinations forms, the design condition of frock truss is divided into following four kinds and analyzes:
(1) be subject to lateral force on the left of truss under dead weight, consider each working platform bearing capacity, dead load;
(2) be subject to lateral force on the right side of truss under dead weight, consider each working platform bearing capacity, dead load;
(3) be subject to lateral force on the left of the lower truss of dynamic loading (consideration dynamic load factor) effect, consider each working platform bearing capacity, dead load;
(4) be subject to lateral force on the right side of the lower truss of dynamic loading (consideration dynamic load factor) effect, consider each working platform bearing capacity, dead load.
Carry out loading according to above four kinds of operating modes respectively to the FEM (finite element) model set up to solve, then respectively strength and distortion analyses is carried out to various operating mode.
(1) first operating mode maximum stress is 117.442MPa, is positioned at the 4th layer of working platform in right side and intermediate truss main chord junction.Maximum displacement is 8.303mm, is positioned on the side of the 4th layer of working platform in right side;
(2) second operating mode maximum stresses are 113.489MPa, are positioned at the 4th layer of working platform in left side and intermediate truss main chord junction.Maximum displacement is 7.967mm, is positioned on the side of the 4th layer of working platform in left side;
The position that (3) the 3rd operating mode maximum stresses produce is identical with the first operating mode, and stress value is 135.519MPa.Owing to considering shock loading, lateral force is increased to 5 times of the first operating mode, makes to produce moderate finite deformation herein, therefore the position producing maximum displacement changes, and appear at the side of first floor working platform, displacement is 16.697mm;
The position that (4) the 4th operating mode maximum stresses produce is identical with the second operating mode, and stress value is 132.205MPa.Maximum displacement is 16.078mm, and the 3rd operating mode is similar, is positioned in the respective side of first floor working platform lateral forces.
Frock truss material selects Q345A, and its allowable stress is calculated as follows:
[
]=
In formula:
for the yield limit of material,
=345MPa;
for safety factor, get
=1.7.Then allowable stress [
]=203MPa.
Frock truss maximum stress is
=135.519MPa< [
]=203MPa, therefore its intensity meets the demands.
The Allowable deflection of truss is calculated as follows:
[y]=L/350=26.3mm
In formula: L is right diagonal brace and the intermediate truss junction distance to first floor working platform, L=9200mm.
The maximum displacement of frock truss is y=16.697mm< [y]=26.3mm, therefore its rigidity also meets the demands.
Frock truss, by the effect of multi-load, belongs to bi-axial bending moment.Adopt nonlinear method to carry out stability analysis, its analysis principle is: increase load gradually, until reach some critical load numerical value, a very little load increment, just obtain a larger distortion, now structure becomes unstable.Finally can obtain the curve (displacement-load curves) of modal displacement with load change, thus draw Buckling Critical Load.
In order to can critical load be reached, the load of applying for: Y-direction (vertical direction) is 100 times of load added by static analysis above, and X-direction (horizontal direction) is 100 times of load added by static analysis above.
X-direction: as shown in Figure 2, when load is less, the substantially linear change of displacement and load, when load continues to become large, when arriving 34000N, curve has a sudden change, distortion sharply increases, after this, as long as load has a fractional increments, distortion all can increase a lot, and trussed construction also just loses stability.Therefore 34000N is exactly Buckling Critical Load.And this is the load of a node, X-direction is applied with altogether 20 nodal forcess, then the critical full payload of the flexing of X-direction is:
=20×34000N=680000N。
The most unfavorable processing condition load of static analysis is: single node 1380N, altogether
=27600N.
Check:
=
/
=24.6>
=8
In formula:
for X-direction working stability safety factor,
for buckling safety factor allowable.
Therefore stability is enough, and there is larger surplus.
As shown in Figure 2, in figure, negative sign only represents direction, and abscissa represents imposed load (N), and ordinate represents displacement (mm).
Y-direction: in like manner, can find out that from the curve Fig. 3 truss starts unstability when load is 106000N, namely the node Buckling Critical Load of Y-direction is:
=106000N.And the load under static analysis the most unfavorable processing condition, this node applied is
=1250N.
Check:
In formula:
for Y-direction working stability safety factor.Therefore stability is enough, and there is larger surplus.
The upper surface of described diagonal brace 1 is provided with cat ladder 2, cat ladder 2 towards with diagonal brace 1 towards identical, and the two ends of cat ladder 2 are connected with ground and intermediate truss 7 respectively, and cat ladder 2 is arranged on the below of the 4th layer of working platform 3.Cat ladder 2 is for the upper and lower passage of operating personnel, saves muscle power, raises labour efficiency.
Girder-embedded is important auxiliary equipment in 800MN large-scale drop press installation process, and the reasonability of trussed construction and security reliability are installed smoothly press ground and played conclusive effect.By setting up finite element analysis model, intensity, rigidity and stability analysis are carried out to the most unfavorable processing condition of frock truss.Finally checking computations assessment is carried out to Finite element analysis results, demonstrate reasonability and the security reliability of frock truss structural design.
The hanging method of C shape plate, comprises the steps;
A () utilizes first floor working platform 6 and second layer working platform 5 to be divided into four parts separated respectively by girder-embedded, by driving by C shape plate vertical lifting, until C shape plate is vertical with level ground, there is certain distance on bottom and the ground of C shape plate, and the opening of C shape plate is towards intermediate truss, utilize driving by the translation of C shape plate, make the sidewall of the sidewall of C shape plate and first floor working platform 6 in same level, control driving again, C shape plate level is moved, until the end face of C shape plate contacts with second layer working platform 5, with corresponding first floor working platform 6 while of sidewall, third layer working platform 4 contacts, after the opening inner side of C shape plate contacts with the 4th layer of working platform 3, C shape plate is vertically declined, snap in the mounted groove in girder-embedded bottom, realize fixing the installation of C shape plate,
B () repeats step (a), by girder-embedded other three the upper C shape plates of part lifting, the C shape plate of four parts, all towards intermediate truss, forms cross shape around first floor working platform 6 and second layer working platform 5;
C () repeats step (a) and step (b), some blocks of C shape plates on girder-embedded four parts lift all successively, C shape plate in each part is fitted all successively, after the C shape plate of all parts has all lifted, then by bolt, the C shape plate in each part is fixed as overall structure.
Every part in girder-embedded hang oneself dress C shape plate time, the C shape plate in every part fits tightly, and strains with bolt.
Girder-embedded support component when lifting as C shape plate, the setting of each working platform and the structure of C shape plate, to adaptation, all as the support in the face to C shape plate, according to above-mentioned result of calculation, can meet the hoisting process of C shape plate completely.
Adopt and lift in this way, four sides is samsara lifting C shape plate successively, and make the stressed all even of girder-embedded every side, the amplitude of change is little, and rocking of truss is little, and the amplitude of distortion is little, lifts more accurate.
The lifting of C shape plate have employed secondary upset hoisting technology, and secondary upset hoisting technology completes a kind of rotary hoisting method that whole hoisting process erect by workpiece after referring to and changing another fixed hinge fulcrum after a fixed hinge fulcrum lifting certain angle chosen by C shape plate workpiece when edge-on again.Take secondary to overturn hoisting technology and slow down the impact produced when suspension centre crosses workpiece position of centre of gravity in hoisting process to a great extent, control workpiece rocking in lifting process by fixed hinge fulcrum, enhance the safety of whole hoisting process.
First: adopt vertical method of hanging the translation of C shape plate to be lifted in secondary upset hole, secondary upset hole refers to the gap between left floor and right floor, C shape plate first fixed hinge fulcrum is put in pin-and-hole corresponding to C shape plate secondary upset frock, this pin-and-hole refers to the low groove of left low groove and the right side, carries out the preparation that C shape plate stands up.
Take to stand and hang the object that can realize translation simply and easily, take vertical hanging that the deadweight of the features of shape C shape plate of C shape plate self can be utilized automatically to adjust vertical workload of saving a heavy industry in C shape plate hoisting process, adopt the vertical method of hanging can control by the direction of C shape plate distortion towards favourable direction, the distortion realized in C shape plate hoisting process is controlled simultaneously.
Secondly: utilize the C shape plate secondary of design upset frock to carry out C shape plate and stand up process from horizontal level to upright position.It is as follows that it stands up main process: with the first fixed hinge fulcrum for C shape plate stands up fulcrum, utilizing 300 tons of travelling crane trucks operations and main hook to hoist stands up to 78 ° of positions by C shape plate from horizontal level, the fulcrum that now C shape plate stands up is transitioned into the second fixed hinge fulcrum by the first fixed hinge fulcrum is shock-free, completes the conversion of the fulcrum that C shape plate stands up smoothly.Using the fulcrum that the second fixed hinge fulcrum stands up as C shape plate, 300 tons of travelling crane trucks are utilized to run and main hook hoists and stands up C shape plate 78 ° of positions to upright position.
Last: utilize 300 tons drive a vehicle vertically hoist certain altitude the bearing pin of the second fixed hinge fulcrum is shifted out C shape plate secondary upset frock after be moved horizontally to installation site, complete the whole upset hoisting process of C shape plate.
Left floor and right floor can prevent C shape plate generation double swerve to be out of shape, the locating hole that second fixed hinge fulcrum and the first fixed hinge fulcrum are plugged on C shape plate by a bearing pin is formed, therefore, in first time upset frock process, the groove bottom of the low groove of groove bottom and the right side of low groove fits together the bearing pin of the first fixed hinge fulcrum with a left side all the time.In the process of second time upset C shape plate, the bearing pin of the second fixed hinge fulcrum fits together with the groove bottom of left high groove and the groove bottom of right high groove all the time, and now the bearing pin of the first fixed hinge fulcrum shifts out from the low groove of the low groove in a left side and the right side.Final step, adopts 300 tons of travelling crane trucks to carry out vertical lifting, is moved horizontally to installation site after the bearing pin of the second fixed hinge fulcrum being shifted out C shape plate secondary upset frock.
Embodiment 2:
Step (a) part in four parts is utilized first to lift good whole C shape plates during the lifting of C shape plate, the end face of each C shape plate all contacts with second layer working platform 5, with corresponding first floor working platform 6 while of sidewall, third layer working platform 4 contacts, after the opening inner side of C shape plate contacts with the 4th layer of working platform 3, C shape plate is vertically declined, snap in the mounted groove in girder-embedded bottom, realize fixing the installation of C shape plate, by bolt the C shape plate in this part all penetrated again and be fixed as entirety, remaining three parts are all lifted according to above-mentioned action successively and fixes C shape plate, the C shape plate of each part is the C shape plate lifting other parts after adopting lifting to fix the C shape plate of this part again, complete the lifting work to all C shape plates.
Because C shape plate is a kind of thin slice elongate in shape, easily be out of shape in installation process, by arrange girder-embedded after, can it be effectively prevented to be out of shape, supported by the upper part face of the working platform on truss to C shape plate, generally be all partly often employing five pieces of C shape plates laminatings, the C shape plate of every part all lift complete after, utilize the bayonet socket that C shape plate is upper and lower, bayonet socket put into by bolt, nut realizes drawing, five blocks of C shape plates are fixed as overall structure, then by three other parts according to above-mentioned action carry out lifting fix, adopt carry out in this way lifting fix, the stroke of driving can easily control, operating personnel can realize overall control, when the lifting of C shape plate carrying out other, rocking of the C shape intralamellar part of every part is little.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention, every according to technology of the present invention, method in fact to any simple modification, equivalent variations that above embodiment is done, all fall within protection scope of the present invention.
Claims (1)
- The hanging method of 1.C shape plate, is characterized in that, comprise the steps:A () utilizes first floor working platform (6) and second layer working platform (5) to be divided into four parts separated respectively by girder-embedded, by driving by C shape plate vertical lifting, until C shape plate is vertical with level ground, there is certain distance on bottom and the ground of C shape plate, and the opening of C shape plate is towards intermediate truss, utilize driving by the translation of C shape plate, make the sidewall of the sidewall of C shape plate and first floor working platform (6) in same level, control driving again, C shape plate level is moved, until the end face of C shape plate contacts with second layer working platform (5), with corresponding first floor working platform (6) while of sidewall, third layer working platform (4) contacts, after the opening inner side of C shape plate contacts with the 4th layer of working platform (3), C shape plate is vertically declined, snap in the mounted groove in girder-embedded bottom, realize fixing the installation of C shape plate,B () repeats step (a), by girder-embedded other three the upper C shape plates of part lifting, the C shape plate of four parts, all towards intermediate truss, forms cross shape around first floor working platform (6) and second layer working platform (5);C () repeats step (a) and step (b), some blocks of C shape plates on girder-embedded four parts lift all successively, C shape plate in each part is fitted all successively, after the C shape plate of all parts has all lifted, then by bolt, the C shape plate in each part is fixed as overall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405239.8A CN102877636B (en) | 2012-10-23 | 2012-10-23 | Built-in truss used during installation of C-shaped plates and hoisting method for same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405239.8A CN102877636B (en) | 2012-10-23 | 2012-10-23 | Built-in truss used during installation of C-shaped plates and hoisting method for same |
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| Publication Number | Publication Date |
|---|---|
| CN102877636A CN102877636A (en) | 2013-01-16 |
| CN102877636B true CN102877636B (en) | 2015-04-01 |
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| US4498556A (en) * | 1982-09-11 | 1985-02-12 | Access Engineering Ltd. | Vertically movable, road towable work platform |
| JP2002220921A (en) * | 2001-01-26 | 2002-08-09 | Taisei Corp | Mobile scaffold for roof |
| CN200978412Y (en) * | 2006-12-13 | 2007-11-21 | 中国水利水电科学研究院 | Sinking-proof easy leveling and dismounting large-scale at-sea wind-electricity basal bearing platform |
| CN101629456B (en) * | 2009-08-18 | 2010-10-13 | 北京城建精工钢结构工程有限公司 | Three-dimensional steel truss assembling support frame shaped like a Chinese character qie and construction method for assembling steel truss |
| CN202359504U (en) * | 2011-12-12 | 2012-08-01 | 海波重型工程科技股份有限公司 | Moveable detachable supporting device for assembling outward inclined segment of web of steel structure bridge |
| CN202804054U (en) * | 2012-10-23 | 2013-03-20 | 中国第二重型机械集团（德阳）万信工程设备有限责任公司 | Built-in truss based on providing support during process of installing C-shaped plate |
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| Title |
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| 基于有限元法的800MN模锻机工装桁架结构分析;崔宝祥;《起重运输机械》;20120120(第1期);第0-2节 * |
| 大型模锻液压机C形机架安装方案设计;陈俊;《重型机械》;20120520(第3期);第1小节 * |
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