CN112096077B - Construction method for multi-point support of special-shaped irregular steel structure - Google Patents
Construction method for multi-point support of special-shaped irregular steel structure Download PDFInfo
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- CN112096077B CN112096077B CN202011028448.6A CN202011028448A CN112096077B CN 112096077 B CN112096077 B CN 112096077B CN 202011028448 A CN202011028448 A CN 202011028448A CN 112096077 B CN112096077 B CN 112096077B
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- E—FIXED CONSTRUCTIONS
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- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
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Abstract
The invention provides a construction method for multi-point support of a special-shaped irregular steel structure, which relates to the technical field of steel structure construction and specifically comprises the following steps: s1, splicing a steel structure: segmenting the steel structure into arc-shaped beams with different multi-section structures according to a design drawing, obtaining the arc-shaped beams by lofting, cutting and processing the arc-shaped beams, sequentially splicing the arc-shaped beams with the different multi-section structures end to end, and firmly connecting the two adjacent arc-shaped beams by welding to obtain a special-shaped irregular steel structure; the special-shaped irregular steel structure is placed on the special-shaped irregular steel structure multipoint support construction device, the special-shaped irregular steel structure is clamped through the construction device, the special-shaped irregular steel structure is lifted through the construction device, the special-shaped irregular steel structure is placed on the supports on the two sides, and the danger that the special-shaped irregular steel structure is held manually to climb up and down is avoided.
Description
Technical Field
The invention relates to the technical field of steel structure construction, in particular to a construction method for multi-point support of a special-shaped irregular steel structure.
Background
With the continuous development and development of the strength of the building industry in China, the urban appearances of all parts of the country are changed drastically, and new buildings such as bamboo shoots grow endlessly in spring after rain. Nowadays, by combining the aesthetic beauty of the buildings of modern people, building designers are ingenuous and specially designed to break through the previous thought constraint, and a batch of buildings with novel and unique shapes and increasingly diversified styles are designed and built, thereby reflecting the strong interest of the times. Especially, the modeling of curved surface buildings is increasingly applied to the modeling of a plurality of domestic and foreign buildings. In these buildings, a large number of irregular steel structures are used, which have been used only as individual units in building construction and are now widely applied to the whole building construction,
the special-shaped irregular steel structure is supported and fixed by adopting a multi-point supporting mode in the existing construction site, the multi-point supporting is favorable for improving the installation firmness of the special-shaped irregular steel structure, and the existing patent number CN201310357124.0 discloses a construction method of the special-shaped irregular steel structure, which comprises the following steps: 1) dividing the special-shaped irregular steel structure into two arc-shaped longitudinal beams and a combination beam connected between the two arc-shaped longitudinal beams in a segmented manner according to a design drawing; 2) lofting, cutting and assembling the steel plates, and processing to obtain the combined beam and the arc-shaped longitudinal beam; 3) firstly, respectively hoisting two arc-shaped longitudinal beams in place, and arranging temporary support columns below the two arc-shaped longitudinal beams; 4) hoisting the combined beam between the two arc-shaped longitudinal beams, and welding and fixing the combined beam and the two arc-shaped longitudinal beams; 5) and unloading the temporary support columns to finish the installation of the irregular steel structure. The construction method is reasonable and feasible, is convenient to operate, and successfully solves the difficult problems of machining and hoisting of the complex special-shaped steel structure. The hoisting mode of 'split hoisting and air combination' is adopted, so that the operation difficulty of operators is reduced, the mechanical operation cost is reduced, the working efficiency is improved, the construction quality and safety are ensured, and the construction period is shortened.
The construction method for the special-shaped irregular steel structure disclosed by the patent still has some defects in the actual construction process, and the specific defects are as follows:
due to the limitation of irregular shape of the profile of the irregular steel structure, the irregular steel structure is mostly manually held to be installed on a high-altitude support, or the irregular steel structure is manually placed on the high-altitude support through an auxiliary device, the wheel of the irregular steel structure is irregular in wheel fall, and the irregular steel structure is easily installed inaccurately in structural position through slow in high-altitude construction, so that the irregular steel structure is instable in installation, and the construction efficiency is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a multipoint support construction method for a special-shaped irregular steel structure, which solves the problem that the construction efficiency is influenced by irregular shape of the contour of the special-shaped irregular steel structure, the special-shaped irregular steel structure is often manually installed on a high-altitude support in a handheld manner, or the special-shaped irregular steel structure is manually placed on the high-altitude support through an auxiliary device, the irregular steel structure is irregular in wheelfall, and due to slow movement during manual construction in high altitude, the structural position is prone to be installed inaccurately in the sky, so that the installation of the special-shaped irregular steel structure is insecure. To a technical problem of (2).
The technical problem to be solved by the invention is realized by adopting the following technical scheme: a construction method for supporting multiple points of a special-shaped irregular steel structure lifts the special-shaped irregular steel structure and puts the special-shaped irregular steel structure on supports on two sides, and is characterized by comprising the following steps:
s1, splicing a steel structure: segmenting the steel structure into arc-shaped beams with different multi-section structures according to a design drawing, obtaining the arc-shaped beams by lofting, cutting and processing the arc-shaped beams, sequentially splicing the arc-shaped beams with the different multi-section structures end to end, and firmly connecting the two adjacent arc-shaped beams by welding to obtain a special-shaped irregular steel structure;
s2, device adjustment: adjusting the special-shaped irregular steel structure multipoint support construction device according to the obtained special-shaped irregular steel structure outline in the step S1 to ensure that the special-shaped irregular steel structure is firmly and reliably placed on the special-shaped irregular steel structure multipoint support construction device;
s3, preparation of release: stably and firmly placing the special-shaped irregular steel structure welded and fixed in the step S1 on the special-shaped irregular steel structure multipoint support construction device adjusted in the step S2;
s4, steel structure throwing: lifting the special-shaped irregular steel structure upwards through the special-shaped irregular steel structure multipoint support construction device in the step S3, and throwing the special-shaped irregular steel structure on the supports on the two sides;
s5, separating a steel structure from the device; separating the special-shaped irregular steel structure and the special-shaped irregular steel structure multi-point supporting construction device which are put on the supports on the two sides in the step S4, so that the special-shaped irregular steel structure is firmly placed on the supports on the two sides;
the steps S1-S5 are specifically completed by matching a special-shaped irregular steel structure multipoint support construction device, the special-shaped irregular steel structure multipoint support construction device comprises a chassis placed on the ground, universal wheels are arranged at the bottom of the chassis, a round-hole-shaped counter bore is formed in the middle of the top end of the chassis, a disc-shaped turntable is mounted at the top end of the chassis, two vertical telescopic arms are symmetrically mounted at the top end of the turntable, a V-shaped block-shaped sliding block is arranged at the bottom of each vertical telescopic arm, a sliding chute matched with the sliding block is formed in the top end of the chassis, the two vertical telescopic arms are symmetrically arranged on two sides of the sliding chute, a first holding claw is arranged at the top end of each vertical telescopic arm, and the first holding claws at the tops of the two telescopic arms are symmetrically held at the bottoms of two ends of the irregular special-shaped steel structure;
inner support rods are symmetrically hinged to the side walls of the telescopic arms on the two sides, each inner support rod is hinged to the side wall of the telescopic arm and close to the top end of the telescopic arm, a tension spring is hinged to the middle of each inner support rod upwards, the tension springs are symmetrically hinged to the side walls of the telescopic arms, the top end of each inner support rod is hinged to a semi-circular arc-shaped second holding claw, the semi-circular arc-shaped second holding claw is provided with an upward opening, and the second holding claws on the side walls of the telescopic arms on the two sides are held in the middle of the special-shaped irregular steel structure;
the middle part of the top end of the rotary disc is fixedly provided with a driving case which is arranged in the middle position of the telescopic arms at the two sides, a square hole-shaped transmission cavity is arranged in the middle of the driving case, a servo motor is fixedly arranged at the top end of the driving case, an output shaft extends out of the servo motor to the transmission cavity, a driving worm is arranged at the bottom end of the output shaft of the servo motor extending into the transmission cavity, the left side and the right side of the driving case are symmetrically provided with a first rotating joint through a bearing, one end of each first rotating joint on each side extends into a transmission cavity of the driving case through the bearing, the top end of each first rotating joint extending into the transmission cavity is provided with a driven worm gear, the driven worm wheels are in meshed transmission with the driving worm, and the driven worm wheels at the top ends of the first rotating joints at two sides extending into the transmission cavity are distributed at two sides of the driving worm in a staggered manner;
every side the splined hole has been seted up to the other end of a runner section, the splined hole of the other end of a runner section has No. two runner sections through the embedding of sliding fit mode, No. three runner sections are installed through the sliding fit mode to the other end of No. two runner sections, the other end of No. three runner sections passes through the bearing and stretches into in flexible arm.
As a preferred technical scheme of the invention, the telescopic arm comprises a bottom supporting arm arranged at the top end of the turntable, the slider is arranged at the bottom end of the bottom supporting arm, a first square-hole-shaped retraction cavity is formed in the top end of the bottom supporting arm, a first square-block-shaped telescopic arm is arranged at the top end of the first square-hole-shaped retraction cavity in a sliding fit manner, a second square-hole-shaped telescopic arm is arranged at the top end of the first square-block-shaped telescopic arm, a top telescopic arm is arranged at the top end of the second square-hole-shaped telescopic arm in a sliding fit manner, and the first holding claw is fixedly arranged at the top end of the top telescopic arm;
wherein, the bottom end of the bottom supporting arm is provided with a second transmission cavity, the second transmission cavity is arranged at the bottom of the first retraction cavity in a square hole shape, a supporting shaft cylinder is fixedly arranged in the second transmission cavity of the bottom supporting arm, the top of the supporting shaft cylinder is connected with a telescopic shaft lever through sliding, the top end of the telescopic shaft lever is fixedly provided with a pushing roller, the top end and the bottom end of one side of the inner wall of the second telescopic arm are symmetrically fixed with fixed pulleys, the bottom ends of the first telescopic arm, the second telescopic arm and the top telescopic arm are all communicated with each other,
one side of the inner wall of the second telescopic arm is fixedly provided with a first tension belt, the first tension belt sequentially penetrates through the top end of the pushing roller and is fixed at the bottom end of the inner wall of the first retraction cavity, one side of the inner wall of the first telescopic arm is fixedly provided with a second tension belt, the other end of the second tension belt sequentially penetrates through a fixed pulley at the top end of the second telescopic arm and a fixed pulley at the bottom end of the second telescopic arm in an S shape, the other end of the second tension belt is provided with a tension belt lock catch, and the other end of the second tension belt is fixedly connected with the first tension belt through the tension belt lock catch;
one side of the bottom of the top telescopic arm is fixedly provided with a fixed lock catch, and the bottom of the top telescopic arm is fixedly connected with a second tension belt through the fixed lock catch;
the other side of the third rotating joint extends into a second transmission cavity at the bottom end of the bottom supporting arm through a bearing, a driving gear is fixedly mounted at the top end of the third rotating joint extending into the second transmission cavity, a rack meshed with the driving gear is arranged on one side wall of the telescopic shaft rod in a sliding connection mode, and the driving gear is in sliding connection with the telescopic shaft rod in the supporting shaft cylinder.
As a preferred technical scheme of the invention, the first holding claw comprises two side limiting support plates, a U-shaped vibration reduction elastic sheet and an arc bending part, wherein the two side limiting support plates are respectively provided with an arc plate which is bent from two ends of the top to the middle part, the two side limiting support plates are symmetrically fixed at the top end of the telescopic arm, the middle parts of the two side limiting support plates are provided with the U-shaped vibration reduction elastic sheet with an upward opening, the bottom of the U-shaped vibration reduction elastic sheet is provided with an arc shape, and the two side edges of the U-shaped vibration reduction elastic sheet and the top close to the U-shaped vibration reduction elastic sheet are provided with the arc bending part which is bent outwards; the top ends of the arc bending parts at the two sides of the U-shaped vibration reduction elastic sheet are in sliding connection with the inner walls of the two side limiting support plates.
As a preferred technical scheme of the invention, triangular block-shaped shock absorption rubber teeth are bonded at equal intervals at the arc bottom of the U-shaped shock absorption elastic sheet, and each shock absorption rubber tooth is in a strip shape.
As a preferred technical scheme of the invention, the inner support rod comprises a first telescopic rod, a spring pin, a second telescopic rod and locking holes, the second telescopic rod is hinged to a telescopic arm, the first telescopic rod is hinged to the bottom of the second holding claw, a round hole-shaped sliding hole is formed in the top end of the second telescopic rod, the bottom end of the first telescopic rod is embedded into the sliding hole in a sliding fit manner, a plurality of through locking holes are formed in the outer wall of the second telescopic rod at equal intervals, the bottom of the first telescopic rod embedded into the sliding hole is provided with the spring hole, one end of the spring pin is embedded into the spring hole in a sliding fit manner, and a spring is arranged at the bottom end of the spring pin embedded into the spring hole.
As a preferred technical scheme of the invention, the tension spring can also be arranged into a telescopic rod with the length capable of being telescopically adjusted.
As a preferable technical proposal of the invention, a disc-shaped supporting base is fixed on the side wall of the telescopic arm, the supporting base comprises supporting feet, locking pins, foot sliding holes and locking holes, the middle part of the supporting base is provided with round hole-shaped foot sliding holes, the supporting bottom feet are arranged in the bottom foot sliding holes in a sliding fit mode and are of a disc structure, the bottom end of the inner supporting rod is hinged with a hinged support, the bottom end of the hinged support penetrates through the supporting base through a bearing and extends into the bottom foot sliding hole, the bottom end of the hinged support extending into the bottom foot sliding hole is fixed in the supporting bottom foot, the top surface of the supporting base is provided with a plurality of locking holes which are communicated in the bottom foot sliding holes at equal intervals, the middle part of the supporting bottom foot is provided with a round hole matched with the locking hole, and the locking pin sequentially penetrates through the corresponding locking hole and the round hole to fix the swinging angle of the hinged support.
Compared with the prior art, the invention has the beneficial effects that:
1. the special-shaped irregular steel structure is placed on the special-shaped irregular steel structure multipoint support construction device, the special-shaped irregular steel structure is clamped through the construction device, the special-shaped irregular steel structure is lifted through the construction device, the special-shaped irregular steel structure is placed on the supports on the two sides, and the danger that the special-shaped irregular steel structure is held manually to climb up and down is avoided. Place on ground through this construction equipment, special-shaped irregular steel structure holds up and upwards mentions through flexible arm, puts in special-shaped irregular steel structure on the support of high latitude, can remove the manual work from and climb the high altitude from, and the foot is stepped on the support and is trampled the danger disconnected with the support easily.
2. The special-shaped irregular steel structure multipoint support construction device of the invention enables the chassis to freely move on the ground to the vicinity of the steel structure through the universal wheels at the bottom of the chassis, is convenient for manually placing the special-shaped steel structure placed on the high-altitude support on the top end of the telescopic arms according to a set pendulum on the ground, the distance between the two telescopic arms at the top end of the turntable can be adjusted left and right through the sliding chute, the two telescopic arms are used for lifting up at the two ends of the bottom of the special-shaped irregular steel structure, so that the special-shaped irregular steel structure freely droops downwards by gravity according to the self profile structure, the special-shaped irregular steel structure after freely drooping is clamped and supported by the two holding claws at the two sides, the special-shaped irregular steel structure is stably placed at the top of the support arm and evenly stressed, and when the special-shaped irregular steel structure is placed on the high-altitude support, the special-shaped irregular steel structure is placed on the high-altitude support according to the set on the ground, the accuracy of the construction position of the irregular internal steel structure is improved.
3. The turntable can rotate at the top end of the base plate, and the turntable can be manually adjusted to rotate, so that the angle of the special-shaped irregular steel structure lifted upwards by the telescopic arm can be manually controlled in the ground to be placed in the high altitude, and the special-shaped irregular steel structure lifted upwards by the telescopic arm can conveniently bypass various complex obstacles in the high altitude, and the special-shaped irregular steel structure can be accurately placed in a high altitude support to be placed.
4. The middle positions of the two vertical telescopic arms are fixedly provided with the driving case, the driving case transmits power to the telescopic arms on the two sides through the first rotary joint, the second rotary joint and the third rotary joint on the two sides, the first rotary joint and the third rotary joint are axially stretched and transmit torque through the spline connection of the second rotary joint, so that the distance between the two telescopic arms is stably in transmission connection with the driving case through the axial stretching of the first rotary joint, the second rotary joint and the third rotary joint during adjustment, and the safety of the telescopic arms when lifting irregular steel structures downwards is improved.
5. According to the invention, the driving worm in the driving case is meshed with the driven worm wheels on the first rotating joints at two sides in a staggered manner, and the driving gears are meshed with the racks, so that the telescopic arm can be driven by controlling the servo motor to extend upwards to any height and can be self-locked, and further, the safety of the construction of the anisotropic irregular side steel structure is improved.
6. The first holding claws are symmetrically and fixedly arranged at the top ends of the telescopic arms at the two sides, and the openings of the first holding claws are upward, so that when the telescopic arms are lifted upwards to be higher than the top surface of the support, the telescopic arms retract downwards to place the irregular support on the support.
7. The U-shaped vibration reduction elastic sheet is arranged in the middle of the first holding claw, the opening of the U-shaped vibration reduction elastic sheet faces upwards, when a special-shaped irregular steel structure is placed on a support, the first holding claw is separated from the special-shaped irregular steel structure conveniently, the bottom of the U-shaped vibration reduction elastic sheet is provided with the arc shape, the special-shaped irregular steel structure is supported conveniently, the bottom surface of the U-shaped vibration reduction elastic sheet is attached to the outline of the special-shaped irregular steel structure, the position firmness of the special-shaped irregular steel structure placed at the top ends of the telescopic arms on the two sides is further improved, the arc bending portion is arranged at the top of the U-shaped vibration reduction elastic sheet, the top surface of the steel structure is clamped through the arc bending portion, and the special-shaped irregular steel structure is placed on the U-shaped vibration reduction elastic sheet to be supported more firmly.
8. According to the invention, the steel structure is guided by the arc-shaped bending parts which are bent outwards at two sides of the U-shaped vibration reduction elastic sheet, so that the special-shaped irregular steel structure is easier to clamp in the middle of the U-shaped vibration reduction elastic sheet, and is clamped and locked by the arc-shaped bending parts, the vibration reduction rubber teeth are adhered to the inner wall of the U-shaped vibration reduction elastic sheet at equal intervals, the hard contact between the surface of the special-shaped irregular steel structure and the inner wall of the U-shaped vibration reduction elastic sheet is reduced, the abrasion of the inner wall of the U-shaped vibration reduction elastic sheet on the surface profile of the special-shaped irregular steel structure is reduced, the vibration of the special-shaped irregular steel structure when the special-shaped irregular steel structure is placed on a support is reduced by the vibration reduction rubber teeth, and the accuracy of the installation position of the special-shaped irregular steel structure during construction is favorably improved.
9. According to the invention, the side limiting support plates are symmetrically fixed on two sides of the top end of the top telescopic arm, the arc-shaped bending parts on two sides of the U-shaped vibration-damping elastic sheet are supported by the side limiting plates, the structural strength of two sides of the U-shaped vibration-damping elastic sheet is improved, the holding force of the arc-shaped bending parts on the top surface of the irregular steel structure is improved, and the U-shaped vibration-damping elastic sheet can be prevented from supporting the irregular side steel structure when the U-shaped vibration-damping elastic sheet is seriously deformed by the side limiting supports on two sides, so that the irregular side steel structure is prevented from falling from high altitude.
The inner supporting rod arranged in the invention axially extends and retracts through the relative sliding between the first telescopic rod and the second telescopic rod, and the height of the second holding claw is adjusted, so that the second holding claw is adjusted according to the profile of the steel structure at the irregular side, the middle part of the steel structure at the irregular side is conveniently supported, and the position accuracy of the steel structure at the irregular side when the steel structure is placed on a high-rise support is improved. According to the invention, the bottom of the second telescopic rod is hinged on the hinged support, the hinged support is in sliding fit with the bottom foot sliding hole in the side wall of the telescopic arm through the support bottom foot, so that the inner support rod can swing freely on the side wall of the telescopic arm, and the second holding claw can be freely adjusted according to the profile of the irregular steel structure of different sex through the telescopic adjustment of the first telescopic rod and the second telescopic rod, so that the second holding claw is uniformly stressed when supporting the irregular steel structure of different sex, and the stability of supporting the irregular steel structure of different sex is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the construction method of the special-shaped irregular steel structure for multi-point support;
FIG. 2 is a schematic structural diagram of a front view of the special-shaped irregular steel structure multipoint support construction device;
FIG. 3 is a schematic cross-sectional front view of the extendable boom of the present invention;
FIG. 4 is a front sectional view of the telescopic arm of the present invention after retraction;
FIG. 5 is a schematic cross-sectional view of the engagement of the drive gear with the telescoping shaft within the bottom support arm of the present invention;
FIG. 6 is a left side view structural schematic diagram of the special-shaped irregular steel structure multipoint support construction device of the present invention;
FIG. 7 is a schematic cross-sectional view of a drive chassis according to the present invention;
FIG. 8 is a schematic cross-sectional view of the connection between the second rotary joint and the third rotary joint according to the present invention;
FIG. 9 is an enlarged view of a portion of FIG. 3 illustrating the present invention;
FIG. 10 is an enlarged view of a portion of FIG. 2 taken at B in the present specification;
FIG. 11 is a cross-sectional view of an inner support rod according to the present invention;
FIG. 12 is an enlarged partial view of FIG. 11 in FIG. C in accordance with the teachings of the present invention;
FIG. 13 is a schematic view of a special-shaped irregular steel structure of the work object of the present invention;
FIG. 14 is an enlarged fragmentary view at D of FIG. 2 in accordance with the teachings of the present invention;
FIG. 15 is a schematic structural view of the irregular steel structure of the present invention being placed on a support by the irregular steel structure multipoint supporting construction apparatus of the present invention;
in the figure: 1. telescopic arm 101, bottom support arm 102, support shaft cylinder 103, first retraction cavity 104, first tension band 105, first telescopic arm 106, pushing roller 107, second telescopic arm 108, second tension band 109, top telescopic arm 110, fixed pulley 111, tension band lock catch 112, fixed lock catch 113, telescopic shaft 114, slide block 2, rotary table 201, sliding chute, 3, first rotary joint 4, servo motor 5, universal wheel 6, second rotary joint 7, driven worm wheel 8, driving worm 9, third rotary joint 901, driving gear 10, driving case 11, first holding claw 1101, side limiting support plate 1102, U-shaped vibration damping shrapnel 1103, vibration damping rubber teeth 1104, arc bending part 12, chassis 13, inner brace 1301, first telescopic rod 1302, spring pin, telescopic rod 1303, second telescopic rod 1303, 1304. locking hole, 1305, sliding hole, 1306, spring hole, 1307, spring, 14, extension spring, 15, No. two gripper jaws, 16, support base 1601, support foot, 1602, locking pin, 1603, foot sliding hole, 1604, locking hole.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining with the specific drawings, and it is to be noted that the embodiments and the features in the embodiments can be combined with each other in the application without conflict.
Referring to fig. 1-15, a construction method of multi-point support for irregular steel structure is disclosed,
a construction method for supporting special-shaped irregular steel structure at multiple points lifts the special-shaped irregular steel structure and puts the special-shaped irregular steel structure on supports on two sides, and specifically comprises the following steps:
s1, splicing a steel structure: the method comprises the following steps of segmenting a steel structure into arc-shaped beams with different multi-section structures according to a design drawing, obtaining the arc-shaped beams through lofting, cutting and processing the arc-shaped beams, sequentially splicing the arc-shaped beams with different multi-section structures end to end, and firmly connecting two adjacent arc-shaped beams through welding to obtain the special-shaped irregular steel structure, wherein welding scars on the surface of the special-shaped irregular steel structure obtained through welding can be removed through polishing;
s2, device adjustment: adjusting the special-shaped irregular steel structure multipoint support construction device according to the obtained special-shaped irregular steel structure outline in the step S1 to ensure that the special-shaped irregular steel structure is firmly and reliably placed on the special-shaped irregular steel structure multipoint support construction device;
s3, preparation of release: the irregular steel structure welded and fixed in the step S1 is stably and firmly placed on the irregular steel structure multi-point support construction device adjusted in the step S2,
s4, steel structure throwing: lifting the special-shaped irregular steel structure upwards through the special-shaped irregular steel structure multipoint support construction device in the step S3, and throwing the special-shaped irregular steel structure on the supports on the two sides;
s5, separating a steel structure from the device; separating the special-shaped irregular steel structure and the special-shaped irregular steel structure multi-point support construction device which are put on the supports on the two sides in the step S4, firmly placing the special-shaped irregular steel structure on the supports on the two sides, and consolidating the installation firmness of the special-shaped irregular steel structure through welding;
the construction method of the special-shaped irregular steel structure multi-point support in the steps S1-S5 is specifically completed by matching a special-shaped irregular steel structure multi-point support construction device, the special-shaped irregular steel structure multipoint support construction device comprises a base plate 12 placed on the ground, wherein the base plate 12 is disc-shaped, universal wheels 5 are arranged at the bottom of the base plate 12, a round-hole-shaped counter bore is formed in the middle of the top end of the base plate 12, a disc-shaped rotary plate 2 is installed at the top end of the base plate 12, two vertical telescopic arms 1 are symmetrically installed at the top end of the rotary plate 2, a V-shaped block-shaped sliding block 114 is arranged at the bottom of each vertical telescopic arm 1, a sliding groove 201 matched with the sliding block 114 is formed in the top end of the base plate 12, the two vertical telescopic arms 1 are symmetrically arranged on two sides of the sliding groove 201, a first holding claw 11 is arranged at the top end of each vertical telescopic arm 1, and the first holding claws 11 at the tops of the two telescopic arms 1 are symmetrically held at the bottoms of two ends of the special-shaped irregular steel structure;
specifically, the special-shaped irregular steel structure is placed on the special-shaped irregular steel structure multipoint support construction device, the special-shaped irregular steel structure is clamped through the construction device, the special-shaped irregular steel structure is lifted through the construction device, the special-shaped irregular steel structure is placed on supports on two sides, and the danger that the special-shaped irregular steel structure is held manually to climb up and down is avoided. Place on ground through this construction equipment, special-shaped irregular steel structure holds up and upwards mentions through flexible arm 1, puts in special-shaped irregular steel structure on the support of high latitude, can remove the manual work from and climb the high altitude from, and the foot is stepped on the support and is trampled the danger disconnected with the support easily.
Specifically, the two vertical telescopic arms 1 are matched with the sliding block 114 through the sliding groove 201 on the rotary table 2, so that the distance between the two vertical telescopic arms 1 can be adjusted at will, and the adjustment can be conveniently carried out according to the lengths of the irregular steel structures with different structural outlines.
Inner supporting rods 13 are symmetrically hinged to the side walls of the telescopic arms 1 on the two sides, each inner supporting rod 13 is hinged to the side wall of the telescopic arm 1 and close to the top end of the telescopic arm 1, a tension spring 14 is hinged to the middle of each inner supporting rod 13 upwards, the tension springs 14 are symmetrically hinged to the side walls of the telescopic arms 1, a semi-arc-shaped second holding claw 15 is hinged to the top end of each inner supporting rod 13, the opening of the semi-arc-shaped second holding claw 15 faces upwards, and the second holding claws 15 located on the side walls of the telescopic arms 1 on the two sides are held in the middle of the special-shaped irregular steel structure;
specifically, the special-shaped irregular steel structure multipoint support construction device enables the chassis 12 to freely move to the vicinity of a steel structure on the ground through the universal wheels 5 at the bottom of the chassis 12, is convenient for manually placing the special-shaped steel structure placed on a high-altitude support on the top end of the telescopic arms 1 on the ground according to a set arrangement, the distance between the two telescopic arms 1 at the top end of the turntable 2 can be adjusted left and right through the sliding grooves 201, the two telescopic arms 1 are used for supporting the two ends of the bottom of the special-shaped irregular steel structure, so that the special-shaped irregular steel structure can freely droop downwards according to the self profile structure by utilizing gravity, the freely drooped special-shaped irregular steel structure is clamped and supported by the second holding claws 15 at the two sides, the special-shaped steel structure is stably placed at the top of the supporting arms and is uniformly stressed, and the special-shaped steel structure is favorably placed on the high-altitude support, the special-shaped irregular steel structure is placed on a high-altitude support according to the arrangement set on the ground, so that the accuracy of the construction position of the special-shaped irregular steel structure is improved.
The middle part of the top end of the rotary table 2 is fixedly provided with a driving case 10, the driving case 10 is arranged in the middle position of the telescopic arms 1 at two sides, the middle part of the driving case 10 is provided with a square hole-shaped transmission cavity, the top end of the driving case 10 is fixedly provided with a servo motor 4, the servo motor 4 extends out of the transmission cavity to form an output shaft, the bottom end of the output shaft of the servo motor 4 extending into the transmission cavity is provided with a driving worm 8, the left side and the right side of the driving case 10 are symmetrically provided with a first rotating joint 3 through a bearing, one end of each first rotating joint 3 at each side extends into the transmission cavity of the driving case 10 through the bearing, the top end of each first rotating joint 3 extending into the transmission cavity is provided with a driven worm wheel 7, the driven worm wheels 7 are in meshing transmission with the driving worm 8, and the driven worm wheels 7 extending into the top ends of the first rotating joints 3 at two sides in the transmission cavity are distributed at two sides of the driving worm 8 in a staggered manner;
spline hole has been seted up to the other end of a rotational joint 3 in every side, there is No. two rotational joints 6 through the embedding of sliding fit mode in the spline hole of the 3 other ends of a rotational joint, No. two rotational joints 6 set up to cylindric integral key shaft structure, No. three rotational joints 9 are installed through the sliding fit mode to the other end of No. two rotational joints 6, No. three rotational joints 9 have seted up the spline hole towards No. two rotational joints 6 directions, No. 6 the other end of rotational joint imbeds in the spline hole of No. two rotational joints 6 through the sliding fit mode, No. three rotational joints 9's the other end stretches into in flexible arm 1 through the bearing.
The telescopic arm 1 comprises a bottom supporting arm 101 arranged at the top end of the turntable 2, a sliding block 114 is arranged at the bottom end of the bottom supporting arm 101, a square hole-shaped first retraction cavity 103 is formed in the top end of the bottom supporting arm 101, a square block-shaped first telescopic arm 105 is arranged at the top end of the square hole-shaped first retraction cavity 103 in a sliding fit mode, a square hole-shaped second telescopic arm 107 is formed in the top end of the square block-shaped first telescopic arm 105, a top telescopic arm 109 is arranged at the top end of the square hole-shaped second telescopic arm 107 in a sliding fit mode, and a first holding claw 11 is fixedly arranged at the top end of the top telescopic arm 109;
wherein, the bottom end of the bottom supporting arm 101 is provided with a second transmission cavity, the second transmission cavity is arranged at the bottom of the first retraction cavity 103 with a square hole shape, a supporting shaft cylinder 102 is fixedly arranged in the second transmission cavity of the bottom supporting arm 101, the top of the supporting shaft cylinder 2 is connected with a telescopic shaft rod 113 through sliding, the top end of the telescopic shaft rod 113 is fixedly provided with a pushing roller 106, the top end and the bottom end of one side of the inner wall of the second telescopic arm 107 are symmetrically fixed with fixed pulleys 110, the bottom ends of the first telescopic arm 105, the second telescopic arm 107 and the top telescopic arm 109 are all communicated with each other,
a first tension belt 104 is fixed on one side of the inner wall of the second telescopic arm 107, the first tension belt 104 sequentially penetrates through the top end of a pushing roller 106 and is fixed at the bottom end of the inner wall of the first retraction cavity 103, a second tension belt 108 is fixed on one side of the inner wall of the first telescopic arm 105, the other end of the second tension belt 108 sequentially penetrates through a fixed pulley 110 at the top end of the second telescopic arm 107 and a fixed pulley 110 at the bottom end of the second telescopic arm 107 in an S shape, a tension belt lock catch 111 is arranged at the other end of the second tension belt 108, and the other end of the second tension belt 108 is fixedly connected with the first tension belt 104 through the tension belt lock catch 111;
one side of the bottom of the top telescopic arm 109 is fixedly provided with a fixed lock catch 112, and the bottom of the top telescopic arm 109 is fixedly connected with the second tension belt 108 through the fixed lock catch 112;
the other side of the third rotating joint 9 extends into a second transmission cavity at the bottom end of the bottom supporting arm 101 through a bearing, a driving gear 901 is fixedly mounted at the top end of the third rotating joint 9 extending into the second transmission cavity, a rack meshed with the driving gear 901 is arranged on one side wall of the telescopic shaft rod 113 in sliding connection, a yielding groove is formed in the position, located at the driving gear 901, of the side wall of the supporting shaft cylinder 102, and the driving gear 901 is in sliding connection with the telescopic shaft rod 113 in the supporting shaft cylinder 102.
Specifically, the driving case 10 is fixedly installed in the middle of the two vertical telescopic arms 1, the driving case 10 transmits power to the telescopic arms 1 on the two sides through the first rotary joint 3, the second rotary joint 6 and the third rotary joint 9 on the two sides, the first rotary joint 3 and the third rotary joint 9 are axially stretched and transmit torque through the spline connection of the second rotary joint 6, so that the distance between the two telescopic arms 1 is stably in transmission connection with the driving case 10 through the axial stretching of the first rotary joint 3, the second rotary joint 6 and the third rotary joint 9 during adjustment, and the safety of the telescopic arms 1 when lifting the irregular steel structure downwards is improved.
Specifically, the driving worm 8 in the driving case 10 is meshed with the driven worm wheels 7 on the first rotating joints 3 at two sides in a staggered mode, and the driving gear 901 is meshed with the rack, so that the telescopic arm 1 is driven by the servo motor 4 to extend upwards to any height and can be self-locked, and the safety of construction of the irregular side steel structure is improved.
Specifically, the first holding claws are symmetrically and fixedly arranged at the top ends of the telescopic arms 1 at the two sides, and the openings of the first holding claws are upward, so that when the telescopic arms 1 are lifted upwards to be higher than the top surface of the support, the telescopic arms 1 retract downwards to place the irregular support on the support.
The first holding claw 11 comprises side limiting support plates 1101, a U-shaped vibration reduction elastic sheet 1102 and arc-shaped bending parts 1104, wherein the side limiting support plates 1101 are provided with two pieces, the two side limiting support plates 1101 are both arc-shaped plates bent from two ends of the top to the middle part, the two side limiting support plates 1101 are symmetrically fixed at the top end of the telescopic arm 1, the U-shaped vibration reduction elastic sheet 1102 with an upward opening is installed in the middle of the two side limiting support plates 1101, the bottom of the U-shaped vibration reduction elastic sheet 1102 is arc-shaped, and the arc-shaped bending parts 1104 which are bent outwards are arranged on two side edges of the U-shaped vibration reduction elastic sheet 1102 and close to the top of the U-shaped vibration reduction elastic sheet 1102; the top ends of the arc-shaped bending parts 1104 at the two sides of the U-shaped vibration reduction elastic sheet 1102 are connected with the inner walls of the two side limiting support plates 1101 in a sliding manner.
Specifically, the side limiting support plates 1101 are symmetrically fixed on two sides of the top end of the top telescopic arm 109, the arc bending portions 1104 on two sides of the U-shaped vibration reduction elastic sheet 1102 are supported by the side limiting plates, the structural strength of two sides of the U-shaped vibration reduction elastic sheet 1102 is improved, the holding force of the arc bending portions 1104 on the top surface of the irregular steel structure is improved, and the U-shaped vibration reduction elastic sheet 1102 can be prevented from supporting the irregular side steel structure when the U-shaped vibration reduction elastic sheet 1102 is seriously deformed by the side limiting supports on two sides, so that the irregular side steel structure is prevented from falling from high altitude.
Specifically, the U-shaped damping elastic sheet 1102 is arranged in the middle of the first holding claw, the opening of the U-shaped damping elastic sheet 1102 is upward, the special-shaped irregular steel structure can be conveniently placed on a support, the first holding claw is separated from the special-shaped irregular steel structure, the bottom of the U-shaped damping elastic sheet 1102 is arc-shaped, the special-shaped irregular steel structure can be conveniently supported, the bottom surface of the U-shaped damping elastic sheet 1102 is attached to the outline of the special-shaped irregular steel structure, the position firmness of the special-shaped irregular steel structure placed at the top ends of the telescopic arms 1 on the two sides is further improved, the arc-shaped bending portion 1104 is arranged at the top of the U-shaped damping elastic sheet 1102, the top surface of the steel structure is clamped through the arc-shaped bending portion 1104, and the special-shaped irregular steel structure is placed on the U-shaped damping elastic sheet 1102 to be more firmly supported.
Triangular block-shaped damping rubber teeth 1103 are bonded to the arc bottom of the U-shaped damping elastic sheet 1102 at equal intervals, and each damping rubber tooth 1103 is arranged in a strip shape.
Specifically, the steel structure is guided by the arc bending parts 1104 bent outwards at two sides of the U-shaped vibration reduction elastic sheet 1102, so that the irregular steel structure is easier to clamp in the middle of the U-shaped vibration reduction elastic sheet 1102, the arc bending parts 1104 are used for clamping and locking, the damping rubber teeth 1103 are pasted on the inner wall of the U-shaped vibration reduction elastic sheet 1102 at equal intervals, the hard contact between the surface of the irregular steel structure and the inner wall of the U-shaped vibration reduction elastic sheet 1102 is reduced, the abrasion of the inner wall of the U-shaped vibration reduction elastic sheet 1102 on the surface profile of the irregular steel structure is reduced, the damping rubber teeth 1103 are pasted on the inner wall of the U-shaped vibration reduction elastic sheet 1102 at equal intervals, the vibration of the irregular steel structure placed on a support is reduced through the damping rubber teeth 1103, and the accuracy of the installation position of the irregular steel structure during construction is improved.
The inner support rod 13 comprises a first telescopic rod 1301, a spring pin 1302, a second telescopic rod 1303 and locking holes 1304, the second telescopic rod 1303 is hinged to the telescopic arm 1, the first telescopic rod 1301 is hinged to the bottom of the second holding claw 15, a round hole-shaped sliding hole 1305 is formed in the top end of the second telescopic rod 1303, the bottom end of the first telescopic rod 1301 is embedded into the sliding hole 1305 in a sliding fit mode, a plurality of through locking holes 1304 are formed in the outer wall of the second telescopic rod 1303 at equal intervals, a spring hole 1306 is formed in the bottom of the first telescopic rod 1301 embedded into the sliding hole 1305, one end of the spring pin 1302 is embedded into the spring hole 1306 in a sliding fit mode, and a spring 1307 is arranged at the bottom end of the spring pin 1302 embedded into the spring hole 1306.
Specifically, the inner supporting rod 13 provided by the invention axially extends and retracts through the relative sliding between the first telescopic rod 1301 and the second telescopic rod 1303, and the height of the second holding claw 15 is adjusted, so that the second holding claw 15 is adjusted according to the profile of the steel structure on the irregular side, the middle part of the irregular side steel structure is conveniently supported, and the position accuracy of the irregular side steel structure when the irregular side steel structure is placed on a high-rise support is improved. According to the invention, the bottom of the second telescopic rod 1303 is hinged on the hinged support, the hinged support is in sliding fit with the bottom foot sliding hole 1603 in the support bottom foot 1601 on the side wall of the telescopic arm 1, so that the inner support rod 13 can swing freely on the side wall of the telescopic arm 1, and the second holding claw 15 can be freely adjusted according to the contour of the irregular steel structure of the opposite sex through the telescopic adjustment of the first telescopic rod 1301 and the second telescopic rod 1303, so that the stress is uniform when the second holding claw 15 supports the irregular steel structure of the opposite sex, and the stability of the support of the irregular steel structure of the opposite sex is improved.
Wherein, upwards pull up inner support pole 13 through extension spring 14, make inner support pole 13 when supporting special-shaped irregular steel structure, reduce inner support pole 13's swing, wherein, extension spring 14 still can set up to the telescopic link that has the scalable regulation of length, and the telescopic link sets up to the telescopic link that stretches out and draws back to the equal auto-lock of arbitrary length, is favorable to improving the support to special-shaped irregular steel structure middle part.
A disc-shaped supporting base 16 is fixed on the side wall of the telescopic arm 1, the supporting base 16 comprises a supporting foot 1601 and a locking pin 1602, footing slide opening 1603, locking hole 1604, the footing slide opening 1603 of round hole form is seted up at the middle part of support base 16, install support footing 1601 through the sliding fit mode in footing slide opening 1603, support footing 1601 sets up to the disc structure, inner support rod 13 bottom articulates there is hinged support 1605, hinged support 1605 bottom passes through the bearing and supports base 16 and stretch into in footing slide opening 1603, stretch into hinged support 1605 bottom mounting in footing slide opening 1603 in supporting footing 1601, the top surface of supporting base 16 is equidistant to be seted up a plurality of and link up the locking hole 1604 in footing slide opening 1603, the middle part of supporting footing 1601 is seted up with locking hole 1604 matched with round hole, locking pin 1602 passes corresponding locking hole 1604 and the round hole is fixed with hinged support 1605's pivot angle end degree in proper order.
Specifically, the inner supporting rod 13 provided by the invention axially extends and retracts through the relative sliding between the first telescopic rod 1301 and the second telescopic rod 1303, and the height of the second holding claw 15 is adjusted, so that the second holding claw 15 is adjusted according to the profile of the steel structure on the irregular side, the middle part of the irregular side steel structure is conveniently supported, and the position accuracy of the irregular side steel structure when the irregular side steel structure is placed on a high-rise support is improved. According to the invention, the bottom of the second telescopic rod 1303 is hinged on the hinged support, the hinged support is in sliding fit with the bottom foot sliding hole 1603 in the support bottom foot 1601 on the side wall of the telescopic arm 1, so that the inner support rod 13 can swing freely on the side wall of the telescopic arm 1, and the second holding claw 15 can be freely adjusted according to the contour of the irregular steel structure of the opposite sex through the telescopic adjustment of the first telescopic rod 1301 and the second telescopic rod 1303, so that the stress is uniform when the second holding claw 15 supports the irregular steel structure of the opposite sex, and the stability of the support of the irregular steel structure of the opposite sex is improved.
In addition, the first holding claw of the invention has the following working principle:
according to the invention, the side limiting support plates 1101 are symmetrically fixed on two sides of the top end of the top telescopic arm 109, the arc-shaped bending parts 1104 on two sides of the U-shaped vibration reduction elastic sheet 1102 are supported by the side limiting plates, so that the structural strength of two sides of the U-shaped vibration reduction elastic sheet 1102 is improved, the holding force of the arc-shaped bending parts 1104 on the top surface of the irregular steel structure is improved, and the irregular side steel structure can be prevented from being supported when the U-shaped vibration reduction elastic sheet 1102 is seriously deformed by the side limiting supports on two sides, so that the irregular side steel structure is prevented from falling from high altitude.
The arc that bends through U-shaped damping shell fragment 1102 both sides outside 1104 that bends leads the steel construction, make irregular steel construction of dysmorphism change in the card and go into the middle part at U-shaped damping shell fragment 1102, and bend through the arc and carry out the chucking locking of portion 1104, it has the yielding rubber tooth 1103 to paste through the equidistant in the inner wall of U-shaped damping shell fragment 1102, reduce the surface of irregular steel construction and the rigid contact of U-shaped damping shell fragment 1102 inner wall, reduce the wearing and tearing of U-shaped damping shell fragment 1102 inner wall to irregular steel construction surface profile, paste at U-shaped damping shell fragment 1102 inner wall equidistant through the yielding rubber tooth 1103, slow down the vibration of irregular steel construction when placing on the support through the yielding rubber tooth 1103, the mounted position precision when being favorable to improving irregular steel construction.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A construction method for supporting multiple points of a special-shaped irregular steel structure lifts the special-shaped irregular steel structure and puts the special-shaped irregular steel structure on supports on two sides, and is characterized by comprising the following steps:
s1, splicing a steel structure: segmenting a steel structure into arc-shaped beams with different multi-section structures according to a design drawing, obtaining the arc-shaped beams through lofting, cutting and processing the arc-shaped beams, sequentially splicing the arc-shaped beams with the different multi-section structures end to end, and firmly connecting the two adjacent arc-shaped beams through welding to obtain a special-shaped irregular steel structure;
s2, device adjustment: adjusting the special-shaped irregular steel structure multipoint support construction device according to the obtained special-shaped irregular steel structure outline in the step S1 to ensure that the special-shaped irregular steel structure is firmly and reliably placed on the special-shaped irregular steel structure multipoint support construction device;
s3, preparation of release: the irregular steel structure welded and fixed in the step S1 is stably and firmly placed on the irregular steel structure multi-point support construction device adjusted in the step S2,
s4, steel structure throwing: lifting the special-shaped irregular steel structure upwards through the special-shaped irregular steel structure multipoint support construction device in the step S3, and throwing the special-shaped irregular steel structure on the supports on the two sides;
s5, separating a steel structure from the device; separating the special-shaped irregular steel structure and the special-shaped irregular steel structure multi-point supporting construction device which are put on the supports on the two sides in the step S4, so that the special-shaped irregular steel structure is firmly placed on the supports on the two sides;
the steps S1-S5 are specifically completed by matching a special-shaped irregular steel structure multipoint support construction device, the special-shaped irregular steel structure multipoint support construction device comprises a chassis placed on the ground, universal wheels are arranged at the bottom of the chassis, a round-hole-shaped counter bore is formed in the middle of the top end of the chassis, a disc-shaped turntable is mounted at the top end of the chassis, two vertical telescopic arms are symmetrically mounted at the top end of the turntable, a V-shaped block-shaped sliding block is arranged at the bottom of each vertical telescopic arm, a sliding chute matched with the sliding block is formed in the top end of the chassis, the two vertical telescopic arms are symmetrically arranged on two sides of the sliding chute, a first holding claw is arranged at the top end of each vertical telescopic arm, and the first holding claws at the tops of the two telescopic arms are symmetrically held at the bottoms of two ends of the irregular special-shaped steel structure;
inner support rods are symmetrically hinged to the side walls of the telescopic arms on the two sides, each inner support rod is hinged to the side wall of the telescopic arm and close to the top end of the telescopic arm, a tension spring is hinged to the middle of each inner support rod upwards, the tension springs are symmetrically hinged to the side walls of the telescopic arms, the top end of each inner support rod is hinged to a semi-circular arc-shaped second holding claw, the semi-circular arc-shaped second holding claw is provided with an upward opening, and the second holding claws on the side walls of the telescopic arms on the two sides are held in the middle of the special-shaped irregular steel structure;
the middle part of the top end of the rotary disc is fixedly provided with a driving case which is arranged in the middle position of the telescopic arms at the two sides, a square hole-shaped transmission cavity is arranged in the middle of the driving case, a servo motor is fixedly arranged at the top end of the driving case, an output shaft extends out of the servo motor to the transmission cavity, a driving worm is arranged at the bottom end of the output shaft of the servo motor extending into the transmission cavity, the left side and the right side of the driving case are symmetrically provided with a first rotating joint through a bearing, one end of each first rotating joint on each side extends into a transmission cavity of the driving case through the bearing, the top end of each first rotating joint extending into the transmission cavity is provided with a driven worm gear, the driven worm wheels are in meshed transmission with the driving worm, and the driven worm wheels at the top ends of the first rotating joints at two sides extending into the transmission cavity are distributed at two sides of the driving worm in a staggered manner;
the other end of the first rotating joint on each side is provided with a spline hole, a second rotating joint is embedded into the spline hole at the other end of the first rotating joint in a sliding fit mode, a third rotating joint is arranged at the other end of the second rotating joint in a sliding fit mode, and the other end of the third rotating joint extends into the telescopic arm through a bearing;
the inner support rod 13 comprises a first telescopic rod, a spring pin, a second telescopic rod and locking holes, the second telescopic rod is hinged to a telescopic arm, the first telescopic rod is hinged to the bottom of the second holding claw, a circular hole-shaped sliding hole is formed in the top end of the second telescopic rod, the bottom end of the first telescopic rod is embedded into the sliding hole in a sliding fit mode, a plurality of through locking holes are formed in the outer wall of the second telescopic rod at equal intervals, the bottom of the first telescopic rod embedded into the sliding hole is provided with the spring hole, one end of the spring pin is embedded into the spring hole in a sliding fit mode, and a spring is arranged at the bottom end of the spring pin embedded into the spring hole;
a disc-shaped supporting base is fixed on the side wall of the telescopic arm, the supporting base comprises supporting feet, locking pins, foot sliding holes and locking holes, the middle part of the supporting base is provided with a round hole-shaped footing sliding hole, a supporting footing is arranged in the footing sliding hole in a sliding fit mode, the supporting bottom feet are arranged in a disc structure, the bottom ends of the inner supporting rods are hinged with hinged supports, the bottom ends of the hinged supports penetrate through the supporting base through bearings and extend into the bottom foot sliding holes, the bottom ends of the hinged supports extending into the bottom foot sliding holes are fixed in the supporting bottom feet, the top surface of the supporting base is provided with a plurality of locking holes which are communicated in the bottom foot sliding holes at equal intervals, the middle part of the supporting bottom foot is provided with a round hole matched with the locking hole, and the locking pin sequentially penetrates through the corresponding locking hole and the round hole to fix the swinging angle of the hinged support.
2. The construction method of the special-shaped irregular steel structure multipoint support according to claim 1, characterized in that: the telescopic arm comprises a bottom supporting arm arranged at the top end of the turntable, the sliding block is arranged at the bottom end of the bottom supporting arm, a square hole-shaped first telescopic arm is arranged at the top end of the bottom supporting arm, a square block-shaped first telescopic arm is arranged at the top end of the square hole-shaped first telescopic arm in a sliding fit mode, a square hole-shaped second telescopic arm is arranged at the top end of the square block-shaped first telescopic arm, a top telescopic arm is arranged at the top end of the square hole-shaped second telescopic arm in a sliding fit mode, and the first holding claw is fixedly arranged at the top end of the top telescopic arm;
wherein, the bottom end of the bottom supporting arm is provided with a second transmission cavity, the second transmission cavity is arranged at the bottom of the first retraction cavity in a square hole shape, a supporting shaft cylinder is fixedly arranged in the second transmission cavity of the bottom supporting arm, the top of the supporting shaft cylinder is connected with a telescopic shaft lever through sliding, the top end of the telescopic shaft lever is fixedly provided with a pushing roller, the top end and the bottom end of one side of the inner wall of the second telescopic arm are symmetrically fixed with fixed pulleys, the bottom ends of the first telescopic arm, the second telescopic arm and the top telescopic arm are all communicated with each other,
one side of the inner wall of the second telescopic arm is fixedly provided with a first tension belt, the first tension belt sequentially penetrates through the top end of the pushing roller and is fixed at the bottom end of the inner wall of the first retraction cavity, one side of the inner wall of the first telescopic arm is fixedly provided with a second tension belt, the other end of the second tension belt sequentially penetrates through a fixed pulley at the top end of the second telescopic arm and a fixed pulley at the bottom end of the second telescopic arm in an S shape, the other end of the second tension belt is provided with a tension belt lock catch, and the other end of the second tension belt is fixedly connected with the first tension belt through the tension belt lock catch;
one side of the bottom of the top telescopic arm is fixedly provided with a fixed lock catch, and the bottom of the top telescopic arm is fixedly connected with a second tension belt through the fixed lock catch;
the other side of the third rotating joint extends into a second transmission cavity at the bottom end of the bottom supporting arm through a bearing, a driving gear is fixedly mounted at the top end of the third rotating joint extending into the second transmission cavity, a rack meshed with the driving gear is arranged on one side wall of the telescopic shaft rod in a sliding connection mode, and the driving gear is in sliding connection with the telescopic shaft rod in the supporting shaft cylinder.
3. The construction method for the multi-point support of the special-shaped irregular steel structure as claimed in claim 1, wherein the construction method comprises the following steps: the first holding claw comprises side limiting support plates, U-shaped vibration reduction elastic sheets and arc-shaped bending parts, wherein the side limiting support plates are provided with two pieces, the two side limiting support plates are both arc-shaped plates bent from two ends of the top to the middle part, the two side limiting support plates are symmetrically fixed at the top ends of the telescopic arms, the U-shaped vibration reduction elastic sheets with upward openings are arranged in the middle parts of the two side limiting support plates, the bottoms of the U-shaped vibration reduction elastic sheets are arranged into arc shapes, and the arc-shaped bending parts bent outwards are arranged on two side edges of the U-shaped vibration reduction elastic sheets and close to the tops of the U-shaped vibration reduction elastic sheets; the top ends of the arc bending parts at the two sides of the U-shaped vibration reduction elastic sheet are in sliding connection with the inner walls of the two side limiting support plates.
4. The construction method of the special-shaped irregular steel structure multipoint support according to claim 3, characterized in that: triangular block-shaped damping rubber teeth are bonded to the arc bottom of the U-shaped damping elastic sheet at equal intervals, and each damping rubber tooth is in a strip shape.
5. The construction method of the special-shaped irregular steel structure multipoint support according to claim 1, characterized in that: the extension spring still can set up to have the telescopic link of scalable regulation of length.
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Denomination of invention: A construction method for multi-point support of irregular steel structures with irregular shapes Effective date of registration: 20230711 Granted publication date: 20220503 Pledgee: Cangzhou Bank Co.,Ltd. Qinhuangdao Haigang Branch Pledgor: Qinhuangdao Jiuji Architectural Decoration Engineering Co.,Ltd. Registration number: Y2023980048019 |
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