CN110919085A

CN110919085A - Steel cutting device and ground steel structure construction method

Info

Publication number: CN110919085A
Application number: CN201911270675.7A
Authority: CN
Inventors: 杨爱国; 邱义平; 杨小罗
Original assignee: Guangdong Zhongye Construction Steel Structure Co ltd
Current assignee: Guangdong Zhongye Construction Steel Structure Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-03-27

Abstract

The invention discloses a steel cutting device and a ground steel structure construction method, relating to the technical field of steel structure construction, and the technical scheme has the following key points: including the landing slab, set up on the landing slab for support steel's strutting arrangement, setting are on a supporting bench, a measuring device for measuring steel's length, setting are on the landing slab, a fixing device for fixing steel, fixedly connected with is located the dipperstick of steel bottom on the landing slab, the zero scale one end of dipperstick is provided with the zero scale's of restriction steel tip alignment dipperstick spacing subassembly, is provided with the shearing mechanism who is used for cutting off steel on the landing slab. The invention solves the technical problems that when steel is cut after manual measurement by the tape measure, the length of the steel is long, the zero-scale end of the tape measure is easy to fall off or displacement is easy to cause measurement error, and further later installation is influenced, and has the advantage of higher measurement precision.

Description

Steel cutting device and ground steel structure construction method

Technical Field

The invention relates to the technical field of steel structure construction, in particular to a steel cutting device and a ground steel structure construction method.

Background

Steel structures are structures made of steel-made materials and are one of the main building structure types. The structure mainly comprises beam steel, steel columns, steel trusses and other members made of section steel, steel plates and the like, and rust removing and preventing processes such as silanization, pure manganese phosphating, washing drying, galvanization and the like are adopted.

The components or parts are usually connected by welding seams, bolts or rivets, so that the self weight is light, the construction is simple and convenient, and the method is widely applied to the fields of large-scale factory buildings, venues and super high-rise buildings.

The construction method of the steel structure comprises the steps of finding a reference point, placing a vertical line, arranging square and parallel lines and installing a ground steel structure.

The ground steel structure installation comprises steel structure column installation, steel structure longitudinal beam installation and steel structure platform installation.

The installation of the process of steel structure installation is the basis for installing other equipment in the later stage. In each step of steel structure installation, the size of later equipment installation needs to be considered, so the size of steel in the steel structure needs to be accurate.

Cut out steel among the prior art through tape measure manual measurement back, the length of steel is longer, and the tape measure appears zero scale end easily and drops or the displacement appears and causes measuring error, and then influences the installation in later stage.

Disclosure of Invention

The invention aims to: the utility model provides a device is tailor to steel lets the measuring error that steel was cuted less, and then lets the higher advantage of precision of the steel construction installation in later stage.

Above-mentioned technical purpose is realized through following technical scheme, a device is tailor to steel, including the landing slab, set up on the landing slab for support steel's strutting arrangement, setting are on a supporting bench, a measuring device for measuring steel's length, set up on the landing slab, a fixing device for fixed steel, fixedly connected with is located the dipperstick of steel bottom on the landing slab, the zero scale one end of dipperstick is provided with the zero scale's of restriction steel tip alignment dipperstick spacing subassembly, is provided with the shearing mechanism who is used for cutting off steel on the landing slab.

Through above-mentioned technical scheme, steel is placed on strutting arrangement, fixes it through fixing device, then pastes the tip of steel on the limiting plate, finds the scale of wanting to cut on the dipperstick, cuts off steel through shearing mechanism, because the dipperstick is fixed on the platform, so the tip of dipperstick can not drop can, it is more convenient, accurate to measure, and the size of the steel that the shearing obtained is more accurate.

Furthermore, a tape measure is arranged on the platform plate and comprises a tape measure strip and a tape measure shell, a tape containing groove for embedding the tape measure shell is formed in the platform plate, and a tape measure strip hole for the tape measure strip to penetrate out is formed in the side wall of the tape containing groove.

Through above-mentioned technical scheme, hold the chi inslot with tape measure shell embedding, can fix the tape measure shell, take out the tape measure shell from the tape measure is downthehole and can let the chi strip stretch out, measure, can measure through the tape measure when the range of dipperstick is not enough, because the one end of tape measure is not fixed, should not drop, so measure more accurately.

Furthermore, shearing mechanism includes the sliding plate of sliding connection on the workstation, rotates on the sliding plate and is connected with the support, rotates on the support and is connected with the sword of tailorring, be fixed with the motor that is used for controlling the rotation of sword of tailorring on the support.

Through above-mentioned technical scheme, through shearing mechanism's sliding connection, can let the sword of tailorring can be in the position of wanting to cut.

Further, fixing device includes two relative fixed plates of perpendicular fixed connection on the landing slab and two collinear threaded rods of axis of threaded connection on the fixed plate, the perpendicular fixedly connected with clamp plate of one end that two threaded rods are close to each other.

Through above-mentioned technical scheme, through the threaded connection of threaded rod and fixed plate, can adjust the displacement of the relative fixed plate of threaded rod, be close to each other through two threaded rods, steel is located between two threaded rods, can press from both sides steel clamp through two threaded rods and fix.

Furthermore, a support plate is vertically and fixedly connected to the sliding plate, and a bracket for embedding the shearing device is arranged on the support plate.

Through above-mentioned technical scheme, the rotating bracket can be placed on holding in the palm the groove, when needing to use shearing mechanism, rotates shearing mechanism ability and starter motor, cuts steel, convenient operation, under the non-operating condition, only need rotating bracket, place the support in holding in the palm the groove can.

Another object of the invention is: the ground steel structure construction method has the advantages that the steel shearing device is selected, so that the shearing precision of steel is higher, the size of the steel is accurate, and the steel is not prone to dislocation in installation.

A construction method of a steel structure comprises the following steps: s1, preparing steel 6; s2, mounting steel structure columns; s3, mounting a steel structure beam: s4, mounting steel structure longitudinal beams; s5, mounting a steel structure platform; s6, installation of steel structure stair, guardrail, its characterized in that: the preparation method of the steel comprises the steps of setting a construction drawing, cutting the steel according to the length and the number of the steel required by the construction drawing, and cutting the steel through a steel cutting device.

Through the technical scheme, the steel is cut by the steel cutting device, the cutting process can be more accurate, more accurate steel in size can be obtained, and the problem of difficulty in installation caused by insufficient size delicacy in the installation process of the steel structure stand column, the installation process of the steel structure beam and the installation process of the steel structure platform is solved.

Further, the steel shearing method comprises the following steps: keep flat steel on smooth rolling, the joint piece on the pulling tape measure shell, it stretches out to drive the chi strip, aim at the one end of steel with zero scale on the chi strip, mark shearing position on steel, remove steel, will tailor sword alignment mark department, the rotary drive palm, let the clamp plate press from both sides tight steel, starter motor, promote the pushing hands pole and cut steel, when the size of needs shearing is less than the range of dipperstick, prevent steel on smooth rolling, rotate the limiting plate, let the tip laminating of limiting plate and steel, sliding shearing mechanism on the landing slab, let tailorre the scale department that the sword is aimed at will shearing, starter motor, the rotary drive palm, cut steel, carry out the installation of steel construction after finishing shearing all required steel.

Through the technical scheme, because the tape measure shell is fixed on the platform board, when measuring, only need handheld joint piece, the position that makes the joint piece corresponds with the position that needs the shearing and carries out the mark, can let the position of mark more accurate, through making of strutting arrangement, steel slides on strutting arrangement, can let the removal of steel more convenient, obtains the steel of more accurate length after the shearing through adding shearing mechanism.

Further, the installation of the steel structure upright post comprises the following steps: s2-1, installing a base, drawing a central line of the position of an upright column on an installation ground according to a construction drawing, placing the upright column base on a central cross line, aligning the center of the base with a paying-off center, arranging a bolt hole on the base, drawing a positioning mark to the ground through the bolt hole on the base, selecting a corresponding impact drill according to the length and the diameter of a ground fixing bolt, aligning the ground mark to drill a hole vertically downwards, cleaning the bolt hole, placing the bolt, and installing and fixing the upright column base; s2-2, mounting the upright post on the base: when the upright post is installed, firstly, the adjusting bolt is installed at the bottom of the upright post, the adjusting bolt is hoisted from the top by using a forklift or other hoisting equipment, the bottom of the upright post slides in from the side edge of the base of the upright post or is directly inserted from the upper part of the base, a fastening bolt is threaded, a flat pad, an elastic pad and a nut are installed, the hoisting rope is loosened, and the verticality and elevation of the upright post are adjusted; s2-3, adjusting the elevation of the upright post, wherein the method for adjusting the elevation of the upright post comprises the following steps: the adjustment of the elevation of the upright post generally uses a level gauge to read the level, namely, the reference elevation (0 meter point) is led to the reference point of equipment to be installed, and the height difference is calculated and is equal to the designed elevation of the upright post when the length of the upright post is added.

Through above-mentioned technical scheme, can let the position when column mouting more advance accurately through drawing the central line earlier, be difficult for appearing the dislocation when installing afterwards, drill the hole after aiming at, carry out the bolt fastening again, can directly go into the screw peg ground to the loss of bolt through the settlement of elevation, it is more convenient to fix from side male mode, and it is more accurate to copy the level through the surveyor's level.

Further, S3-1, after the ground steel structure upright post is installed, installing a steel structure beam by using lifting equipment such as a forklift and a lifter, jacking the beam by using the forklift or the lifter for beam installation to exceed the height of the top of the upright post, moving the beam to be right above the upright post, aligning two ends of the beam as far as possible, and putting the beam downwards at the top end of the upright post; s3-2: respectively using a construction worker beside the two stand columns by using a climbing device, after the cross beam is stably placed, accurately adjusting the cross beam by using an iron hammer by two workers to align the center of the cross beam with the center of the stand column, and placing the cross beam in the middle along the length direction according to a drawing; s3-3: after fine adjustment is finished, fixing the steel plate by installing a splint; s3-4: whether the actual interval of inspection crossbeam accords with the drawing requirement after the installation is accomplished, if not to need to adjust the crossbeam interval, the modulation of splint fixed mode is to carrying out the reaming to needs adjustment direction on the stand roof, and the adjustment of welding connection mode is to beating spot welding position solder joint for the polisher, adjusts the crossbeam to needs adjustment direction, waits to adjust the completion with the bolt tightening and locking nut or with the full weld between crossbeam and the stand roof.

Through above-mentioned technical scheme, put after hoisting the crossbeam and accomplish again the fine tuning at the stand top and fix through the installation of splint, the installation is more stable.

Further, the specific mode of splint installation is: firstly, installing a clamping plate, placing the clamping plate above the bottom edge of the cross beam and aligning to a bolt hole of a top plate of the stand column, connecting the top plate of the stand column with the clamping plate by using a bolt, adding a flat pad and an elastic pad, fastening and installing a locking nut; if the connection mode is welding, the beam and the bottom plate of the upright post are fixed by spot welding.

Through above-mentioned technical scheme, through the splint installation, it is more firm to let fixed.

In conclusion, the invention has the following technical effects:

1. through the setting of the device is tailor to steel, can let the in-process of tailorring steel, can let the size of steel more accurate, for subsequent installation provides more convenient condition, be difficult to because the size is exquisite installation dislocation that leads to inadequately, and then influences the atress ability of installation progress and steel construction.

Drawings

FIG. 1 is a schematic structural diagram of a steel material cutting apparatus in an embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural view showing the extended state of the blade of the steel material cutting apparatus in the embodiment;

fig. 4 is a schematic structural diagram showing a limiting assembly in the embodiment.

Reference numerals: 1. a work table; 10. a platform plate; 11. a support leg; 12. a scale groove; 13. a ruler hole; 14. a sliding plate; 2. a fixing device; 20. a fixing plate; 21. a threaded rod; 22. a driving hand plate; 23. a clamping plate; 3. a measuring device; 30. measuring a scale; 31. a tape measure housing; 32. a ruler strip; 33. a clamping block; 40. a rotating shaft supporting plate; 41. rotating the connecting plate; 410. a support shaft; 42. a motor; 43. pushing the connecting plate; 44. a handle bar; 45. a cutting knife; 46. a protective shell; 5. a support device; 50. supporting the guard plate; 51. sliding and rolling; 52. a rolling groove; 6. steel material; 7. a support plate; 70. a bracket 8 and a limiting component; 80. a limiting plate; 81. a limiting column.

Detailed Description

The steel material cutting device comprises a workbench 1, a fixing device 2 arranged on the workbench 1, a measuring device 3 arranged on the workbench 1 and a shearing device arranged on the workbench 1 and used for shearing a steel material 6, wherein the fixing device is used for fixing the steel material on the workbench 1.

The workbench 1 comprises supporting legs 11 and a platform board 10, and with reference to fig. 2, the measuring device 3 comprises a measuring ruler 30 fixed on the platform board 10 and a ruler containing groove 12 arranged on the platform board 10 and located at one end of the measuring ruler 30, a measuring tape is embedded in the ruler containing groove 12, a measuring tape shell 31 is embedded in the ruler containing groove 12, and a ruler hole 13 is formed in the side wall of the ruler containing groove 12.

The end of the tape 32 which penetrates out of the tape hole 13 is provided with a clamping block 33 which is clamped with the tape hole 13.

A sliding plate 14 is slidably connected to the platform plate 10, and a sliding direction of the sliding plate 14 is a length direction of the measuring ruler 30.

Be connected with the support on sliding plate 14, the support includes two relative pivot backup pads 40, it rotates to be connected with between two pivot backup pads 40 and rotates connecting plate 41, the direction of rotation of rotating connecting plate 41 is perpendicular to the length direction of dipperstick 30, the shape on the surface of rotating connecting plate 41 is triangle-shaped, a summit of rotating connecting plate 41 rotates and connects between two pivot backup pads 40, both ends at the end of keeping away from pivot backup pad 40 of rotating connecting plate 41 are fixedly connected with motor 42 and back shaft 410 respectively, motor 42 is located and rotates connecting plate 41 and keeps away from steel one side, back shaft 410 is located and rotates connecting plate 41 and is close to one side of steel 6, it cuts sword 45 to rotate to be connected with on the back shaft 410, the output of motor 42 is cut sword 45 and is rotated around the axis of back shaft 410.

In order to prevent the cutting blade 45 from being accidentally injured by the user, a protective case 46 partially covering the cutting blade 45 is provided on the top of the outer side of the cutting blade 45.

Fixedly connected with between motor 42 and the rotation connecting plate 41 promotes connecting plate 43, promotes fixedly connected with push rod 44 on the connecting plate 43, and push rod 44 is the U type, and the equal fixed connection in both ends of push rod 44 is on the edge of keeping away from layer board 7 that promotes connecting plate 43.

The end, far away from the steel 6, of the rotating shaft supporting plate 40 is provided with a supporting plate 7 vertically and fixedly connected to the sliding plate 14, the supporting plate 7 is perpendicular to the rotating shaft supporting plate 40, the top of the supporting plate 7 is provided with a bracket 70, and the connecting plate 41 is rotated to embed the side edge of the connecting plate 41 into the bracket 70.

Four supporting devices 5 for supporting the steel material 6 are arranged along the length direction of the measuring ruler 30, and the supporting devices 5 include two supporting plates 50 vertically connected to the platform plate 10 and a slide roller 51 rotatably connected between the two supporting plates 50.

The steel material 6 is placed on the slide roller 51 so as to be slidable in the longitudinal direction of the measuring scale 30.

Combine fig. 2, four both ends that smooth 51 array orientation of rolling are provided with fixing device 2, fixing device 2 includes two relative fixed plates 20 of perpendicular fixed connection on landing slab 10, threaded connection has perpendicular to fixed plate 20 threaded rod 21 on the fixed plate 20, the axis collineation of two threaded rods 21, the one end fixedly connected with drive hand board 22 that two threaded rods 21 deviate from each other, drive hand board 22 is located two fixed plates 20 and deviates from one side each other, the perpendicular fixedly connected with pinch-off blades 23 of drive hand board 22 one end of keeping away from of threaded rod 21, rotate drive hand board 22, let threaded rod 21 relative fixed plate 20 along the axis direction motion of threaded rod 21, and then can let two pinch-off blades 23 be close to each other or keep away from, place steel on smooth 51, two pinch-off blades 23 are close to centre gripping steel 6 each other.

Referring to fig. 3, a rolling groove 52 into which the steel material 6 is inserted is recessed in the middle of the slider 51.

Combine fig. 4, landing slab 10 keeps away from holding chi groove 12 one side and is provided with spacing subassembly 8, and spacing subassembly 8 is including rotating the limiting plate 80 of connecting and keeping away from holding chi groove 12 one side at landing slab 10, rotates limiting plate 80 and can let limiting plate 80 be located the straight line at steel 6 place, and fixedly connected with spacing post 81 is gone up to landing slab 10, and limiting plate 80 rotates as to the tip laminating back of steel 6, and spacing post 81 is located limiting plate 80 bottom sprag limiting plate 80.

The steel material 6 is slid on the slide roller 51, the end of the steel material 6 is attached to the limit plate 80, and the zero scale of the measuring scale 30 is attached to the limit plate 80.

In the specific implementation process, the steel material 6 is placed on the sliding roller 51, the limiting plate 80 is rotated to enable the limiting plate 80 to be attached to the end portion of the steel material 6, the shearing device is slid on the platform plate 10, the cutting knife 45 is aligned to the corresponding scale on the measuring scale 30, the motor 42 is started, the shearing device is rotated to enable the shearing device to cut the steel material 6.

When the steel 6 to be cut exceeds the range of the measuring scale 30, the tape shell 31 is taken out from the tape groove 12 and is drawn out to the end far away from the measuring scale 30, the initial scale A on the upper surface of the ruler strip 32 is collinear with the maximum range B of the measuring scale 30 and has the same value, the highest scale of the measuring scale 30 can be continued, and the longer steel 6 can be measured. The position to be cut is marked on the steel material 6 by the marking pen, the limiting plate 80 is rotated to separate the limiting plate 80 from the end of the steel material 6, the steel material 6 is slid, and the cutting blade is aligned with the marked position to cut.

A construction method of a ground steel structure comprises the following steps:

s1: preparing steel material 6; s2, mounting steel structure columns; s3, mounting a steel structure beam: s4, mounting steel structure longitudinal beams; s5, mounting a steel structure platform; and S6, mounting steel structure stairs and guardrails.

S1: and (3) preparing steel materials 6, and shearing the steel materials 6 to the length required in the drawing according to the preparation of the drawing with proper length and proper quantity of the steel materials 6.

The specific shearing mode of the steel 6 comprises the following steps:

the steel 6 is flatly placed on the sliding roller 51, the clamping block 33 on the tape measure shell 31 is pulled to drive the ruler strip 32 to stretch out, the zero scale on the ruler strip 32 is aligned to one end of the steel 6, the shearing position is marked on the steel 6, the steel 6 is moved, the cutting knife 45 is aligned to the marked position, the hand plate 22 is rotationally driven, the clamping plate 23 is enabled to clamp the steel 6, the motor 42 is started, and the hand pushing rod 44 is pushed to shear the steel 6.

When the size that needs to be cuted is less than the range of dipperstick 30, prevent to roll steel 6 on the cunning, rotate limiting plate 80, let limiting plate 80 and the tip laminating of steel 6, the shearing mechanism that slides on landing slab 10 lets cut out cutter 45 and aim at the scale department that will cut, starter motor 42, rotary drive palm 22 cuts steel 6, carries out the installation of steel construction after finishing shearing all steel 6 that need.

S2, mounting the steel structure upright post, comprising the following steps:

the base is installed firstly, then the upright post is installed on the base, and the height adjustment bolt is utilized to adjust the elevation and the verticality of the upright post for full welding.

The concrete steps of the installation of the steel structure upright post are as follows:

s2-1, installing a base, drawing a central line of the position of the upright column according to a construction drawing on an installation ground, placing the base of the upright column on a central cross line, aligning the center of the base with a paying-off center, arranging a bolt hole on the base, drawing a positioning mark to the ground through the bolt hole on the base, selecting a corresponding impact drill according to the length and the diameter of a ground fixing bolt, aligning the ground mark to vertically drill a hole downwards, cleaning the bolt hole, placing the bolt, and installing and fixing the base of the upright column.

S2-2, mounting the upright post on the base: during the installation of the stand column, the adjusting bolts are firstly installed at the bottom of the stand column, a forklift or other hoisting equipment is used, a steel wire rope is used for hoisting from the top, the bottom of the stand column slides in from the side edge of the base of the stand column or is directly inserted from the upper side of the base, fastening bolts are worn and installed on a flat pad, an elastic pad and a nut, the hoisting ropes are loosely seen, and the verticality and elevation of the stand column are adjusted.

S2-3, adjusting the elevation of the upright post: the method for adjusting the elevation of the upright column comprises the following steps: the adjustment of the elevation of the upright post generally uses a level gauge to read the level, namely, the reference elevation (0 meter point) is led to the reference point of equipment to be installed, and the height difference is calculated and is equal to the designed elevation of the upright post when the length of the upright post is added.

The equipment for marking high demand is mainly a level gauge, the using method of the level gauge and how to lead the level gauge to an installation upright post from a design reference elevation value to realize an actual elevation value of the upright post, and the using working method is as follows:

the use steps of the level gauge comprise: the method comprises five steps of level setting, rough leveling, aiming, fine leveling and reading. The arrangement is that the instrument is arranged on a telescopic tripod and is arranged between two observation points. The tripod is first opened and the height is made moderate, the head is made approximately horizontal by visual estimation and the foot is checked for firmness, then the instrument box is opened and the levelling instrument is attached to the tripod by means of the attachment screw.

Rough leveling is to make the sight of the instrument roughly level, and the feet are used for placing circular leveling bubbles in the circular index ring. The specific method is implemented by using an instrument.

Aiming is to accurately aim the target with a telescope. Firstly, the telescope is turned to a bright background at a distance, and the eyepiece is rotated to focus the spiral to make the cross line clearest. Then the fixed screw is loosened, the telescope is rotated to make the connection between the sight and the sight align with the leveling rod, and the fixed screw is screwed down. And finally, rotating the objective lens to align the optical spiral to enable the leveling rod to clearly fall on the cross line plane, and then rotating the inching spiral to enable the image of the leveling rod to lean against one side of the cross vertical line.

The fine leveling is to make the sight of the telescope be exactly horizontal. The micro-inclination level is provided with a group of prisms on the upper part of a level tube, so that two ends of a bubble of the level tube can be refracted into a level observation window beside the mirror tube, and if the bubble is centered, the sight line level is indicated. If the image at the two ends of the bubble is not centered, the vision is not horizontal. The slightly inclined spiral can be rotated by hand to completely center the image at the two ends of the bubble.

The reading is taken by intercepting the reading on the leveling rod with a cross line. The prior level has a reverse telescope, and reading is carried out from top to bottom. The millimeter readings are estimated and reported.

S2-4, a method for adjusting the verticality of the pillar, which has the following two modes, in this embodiment, the mode 2 is selected:

mode 1, level bar adjustment verticality: the horizontal ruler is provided with three glass tubes, the transverse glass tube is used for measuring a horizontal plane, the vertical glass tube is used for measuring a vertical plane, the other glass tube is generally used for measuring a 45-degree angle, the three bubbles are used for measuring whether the measuring plane is horizontal or not, the bubbles are centered and horizontal, and the bubbles deviate from the center, so that the plane is not horizontal. When the horizontal ruler is vertical, the horizontal ruler is placed in parallel with the upright column on the north side, if the measured upright column deviates from the vertical, the bubble of the horizontal ruler deviates to the opposite direction, the bubble is jacked up by adjusting the bottom adjusting bolt on one side of the deviation direction of the upright column or is lifted up by adjusting the adjusting bolt in the opposite direction, and the other side is adjusted by the same method. This method is rarely used because the level has errors in the tube reading and is inherently too large.

Mode 2, magnetic plumb bob adjustment verticality: the verticality is adjusted by utilizing the free verticality of the plumb bob and the vertical distance between the upright post and the plumb line. Firstly, the plumb is sucked on one side of the stand column (generally, the height is more than two meters away from the ground), the bottom is ensured to be free of obstacles by pulling down the heavy hammer, after the heavy hammer is static, the distance between the stand column at the upper end and the plumb line is measured (the measuring tool is vertical to the stand column), the reading is set to be 6mm, the distance between the lower end is measured again, if the measured value is less than 6mm, the stand column deviates leftwards, the lifting is realized by adjusting the adjusting bolt on the left bottom adjusting bolt jack-up or the right side of the stand column, if the measured value is greater than 6mm, the stand column deviates rightwards, and the lifting is realized by adjusting the.

S3, mounting a steel structure beam:

the ground steel structure cross beam is supported by the tops of the stand columns, and installation is convenient. The top end of the beam and the top end of the upright post can be fixed by welding or clamping plates, and the clamping plates are selected and fixed in the embodiment.

S3-1, after the ground steel structure upright post is installed, a steel structure cross beam is installed by using lifting equipment such as a forklift and a lifter, the cross beam is jacked up to exceed the top height of the upright post by using the forklift or the lifter for installing the cross beam, the cross beam is moved right above the upright post, two ends of the cross beam are aligned as far as possible, and the cross beam is placed downwards at the top end of the upright post.

S3-2: the other constructor who uses equipment of ascending a height of two stands respectively, treat to put steady back with the crossbeam, two people carry out the accurate adjustment to the crossbeam with the iron hammer, make crossbeam center and stand center align, crossbeam length direction is put between two parties according to the drawing.

The adjustment mode is as follows: the hammer strikes the lower parts of the two sides of the beam, the mode can ensure that the moving distance of the beam is effective and safe,

s3-3: after the fine adjustment is finished, the fixing is carried out through the installation of a splint.

The specific mode of splint installation does: firstly, installing a clamping plate, placing the clamping plate above the bottom edge of the cross beam and aligning to a bolt hole of a top plate of the stand column, connecting the top plate of the stand column with the clamping plate by using a bolt, adding a flat pad and an elastic pad, fastening and installing a locking nut; if the connection mode is welding, the beam and the bottom plate of the upright post are fixed by spot welding.

S3-4: after the installation is finished, whether the actual distance between the cross beams meets the requirement of a drawing is checked, if the actual distance between the cross beams does not meet the requirement of adjusting, the distance between the cross beams is adjusted in a clamping plate fixing mode, and the top plate of the upright post is reamed towards the direction needing to be adjusted; and adjusting the welding connection mode, namely, polishing off welding spots of spot welding parts by using a grinding machine, and adjusting the beam to the direction needing to be adjusted. And after the adjustment is finished, screwing the bolt and locking the nut or fully welding the cross beam and the top plate of the upright post.

S4, mounting steel structure longitudinal beams;

the utility model discloses a steel construction longeron mounting means is for pegging graft in the middle of the crossbeam as the grafting roof beam, and the grafting roof beam is installed at two crossbeam vertical direction's roof beam, and the plane is unanimous with the crossbeam in the installation, and grafting roof beam mounting means has direct welding and bolted connection two kinds, and the direct welding is chooseed for use to this embodiment, and the grafting roof beam is because of unanimous with the last plane of crossbeam, and the bearing surface is big so easily platform, guardrail installation.

S5, mounting a steel structure platform;

modular platform formula is put at the crossbeam, longeron upper portion, support whole on the roof beam, the steel platform is than the crossbeam, the space between the longeron is big, the height that rises during modular platform installation will be higher than the last plane of roof beam, the fork truck lift mode is chooseed for use under the biggest stroke of fork truck is greater than the platform elevating height circumstances, load onto two longerons at first most marginal, then steel platform on the reuse fork truck, the steel platform is respectively had a constructor for the dual lifting means of steel platform, supplementary fork truck puts the platform upright, treat that the steel platform puts into the mounted position and take out behind the fork truck, constructor carries out the fine setting to the platform according to the drawing with iron hammer and sled stick, after the steel platform has been loaded into two, connect between two.

If the platform is higher, under the condition that the stroke of the forklift is insufficient, the longitudinal beam at one step can be completely installed firstly, the steel platform is lifted by the lifter, one side of the lifter is close to the longitudinal beam at the edge as much as possible when the steel platform ascends, the steel platform is pulled when the platform ascends to be flush with the upper plane of the beam, the steel platform is adjusted to be fixed in a fixing mode according to a picture, a platform close to the lifter is installed firstly, and then the steel platform is installed inwards gradually.

S6, mounting steel structure stairs and guardrails;

s6-1, the steel structure stairs are inclined stairs or straight stairs, and the inclined stairs are heavy generally and the straight stairs are light.

The inclined ladder is installed because of self is heavier, can hang a chain block in platform top department during the installation, puts ladder perpendicular and platform on the below subaerial that corresponds platform mounted position, and the calabash lower extreme is tied and is upwards drawn on ladder upper portion, waits to pull mounted position and adjusts the position, and upper portion and platform roof beam welding are beaten expansion bolts and are fixed to the lower part. Because the vertical ladder is light, the ladder can be pulled up by manpower during installation, the position is adjusted, the upper part is welded with the platform beam, and the lower part is fixed by an expansion bolt.

S6-2, installing the guardrail, namely installing the guardrail after the platform single span installation is finished, conveying the guardrail to the platform by a forklift or a lifter firstly because the guardrail gasket is light, conveying the guardrail to an installation position by constructors, installing the guardrail at the edge of the steel platform according to a graph connection mode, and completing the installation by welding fixation or bolt fixation.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A steel cutting device, characterized in that: comprising a platform plate (10), arranged on the platform plate (10), a support device (5) for supporting the steel (6), arranged on a support table, used for A measuring device (3) for measuring the length of the steel material (6), a fixing device (2) arranged on the platform plate (10) and used for fixing the steel material (6), the platform plate (10) is fixedly connected with a fixing device (2) located on the steel material (6). ) at the bottom of the measuring ruler (30), the zero-scale end of the measuring ruler (30) is provided with a limit component that restricts the end of the steel (6) to align with the zero-scale of the measuring ruler (30), on the platform plate (10) A shearing device for cutting the steel (6) is provided.

2. A steel cutting device according to claim 1, characterized in that: the platform plate (10) is provided with a tape measure, the tape measure comprises a ruler strip (32) and a tape measure shell (31), and the platform plate (10) is provided with a tape measure. There is a measuring slot (12) into which the tape measure shell (31) is embedded, and a measuring strip (32) hole (13) through which the measuring strip (32) passes is formed on the side wall of the measuring slot (12).

3. A steel cutting device according to claim 1, characterized in that: the cutting device comprises a sliding plate (14) slidably connected to the worktable (1), and the sliding plate (14) is rotatably connected with a sliding plate (14). A bracket, on which a cutting knife (45) is rotatably connected, and a motor (42) for controlling the rotation of the cutting knife (45) is fixed on the bracket.

4 . The steel cutting device according to claim 3 , wherein the fixing device ( 2 ) comprises two opposite fixing plates ( 20 ) vertically and fixedly connected to the platform plate ( 10 ) and a screw connection. 5 . Two threaded rods (21) with collinear axes on the fixing plate (20) are vertically fixedly connected with a clamping plate (23) at one end of the two threaded rods (21) close to each other.

5. A steel cutting device according to claim 4, characterized in that: the sliding plate (14) is vertically fixedly connected with a support plate (7), and the support plate (7) is provided with a cutting device for embedding bracket (70).

6. A ground steel structure construction method, comprising the following steps: S1: preparation of steel (6) 6; S2, steel structure column installation; S3, steel structure beam installation: S4, steel structure longitudinal beam installation; S5, steel structure Platform installation; S6, the installation of steel structure stairs and guardrails, characterized in that: the preparation method of the steel (6) is: setting construction drawings, cutting the steel (6) according to the length and quantity of the steel (6) required by the construction drawings, and passing the The steel cutting device cuts the steel (6).

7. The ground steel structure construction method according to claim 6, characterized in that: the step of shearing the steel (6) is: placing the steel (6) flat on the sliding roll (51), and pulling the tape measure shell (31) The snap-on block (33) on the upper part drives the ruler (32) to extend, align the zero scale on the ruler (32) with one end of the steel (6), mark the cutting position on the steel (6), and move Steel (6), align the cutting knife (45) with the mark, rotate the driving hand plate (22), let the clamping plate (23) clamp the steel (6), start the motor (42), and push the push lever (44) to The steel (6) is cut. When the size to be cut is smaller than the range of the measuring ruler (30), the steel (6) is prevented from sliding on the rolling (51), and the limit plate is rotated to let the limit plate and the steel (30). 6) Fit the ends, slide the shearing device on the platform plate (10), align the cutting knife (45) with the scale to be cut, start the motor (42), rotate the driving hand plate (22), and cut the steel. (6) Cut, and install the steel structure after cutting all the required steel (6).

8. The ground steel structure construction method according to claim 6, wherein the installation of the steel structure column comprises the following steps: S2-1, install the base, and draw the column position center line on the installation ground according to the construction drawing, Place the base of the column on the center cross line, the center of the base is aligned with the center of the pay-off line, the base is provided with bolt holes, draw positioning marks to the ground through the bolt holes on the base, and select the corresponding impact drill according to the length and diameter of the ground fixing bolts. Drill the hole vertically downward on the quasi-ground mark, clear the bolt hole, put in the bolt, and install the column base to fix it; S2-2, install the column on the base: when installing the column, first install the adjusting bolt into the bottom of the column, and lift it with a forklift or other The equipment is hoisted from the top with a wire rope, the bottom of the column is slid in from the side of the column base or inserted directly from the top of the base, put on the fastening bolts and install the flat washer, spring washer, and nut, loosen the hoisting rope, and face the column. Adjust the verticality and elevation; S2-3, column elevation adjustment: column elevation adjustment method: the adjustment of the column elevation generally uses a level to copy the level, which is to guide the datum elevation (0 m point) to the datum point of the equipment to be installed, and calculate the drop in Adding the length of the column is equal to the design elevation of the column.

9. The ground steel structure construction method according to claim 6 is characterized in that: S3-1, after the ground steel structure column is installed, use lifting equipment such as forklifts, elevators to install the steel structure beams, and the beams are installed with forklifts or elevators. The beam is lifted above the height of the top of the column, move the beam to the top of the column, try to align the two ends, and place it down on the top of the column; S3-2: Use a construction worker with climbing equipment next to the two columns. After the beam is stabilized, the two The person uses a hammer to precisely adjust the beam, so that the center of the beam is aligned with the center of the column, and the length of the beam is placed in the center according to the drawing; S3-3: After the fine adjustment is completed, it is fixed by the splint installation;

S3-4: After the installation is completed, check whether the actual spacing of the beams meets the requirements of the drawing. If it does not meet the requirements of the drawing, the spacing of the beams needs to be adjusted, and the fixing method of the splint is adjusted. Use a grinder to break off the welding points of the spot welding parts, and adjust the beam in the direction that needs to be adjusted. After the adjustment is completed, tighten the bolts and tighten the lock nut or fully weld the beam and the top plate of the column.

10. The construction method of ground steel structure according to claim 9 is characterized in that: the specific method of the splint installation is: first install the splint, place the splint above the bottom edge of the cross beam and align the bolt hole of the top plate of the column, and use the bolt to attach the column. Connect the top plate and the splint, add flat washers and spring washers, and tighten and install the lock nut; if the connection is by welding, first spot-weld the beam and the bottom plate of the column.