CN114059669B - Self-rotating accumulated lifting method for large-span annular double-layer pipe truss - Google Patents
Self-rotating accumulated lifting method for large-span annular double-layer pipe truss Download PDFInfo
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- CN114059669B CN114059669B CN202111084821.4A CN202111084821A CN114059669B CN 114059669 B CN114059669 B CN 114059669B CN 202111084821 A CN202111084821 A CN 202111084821A CN 114059669 B CN114059669 B CN 114059669B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
Abstract
The invention discloses a self-rotating accumulated lifting method of a large-span annular double-layer pipe truss, which comprises the following steps of: step one, building a plurality of towers according to a preset shape; step two, sequentially and sequentially lifting the outer ring trusses between two adjacent towers to a first preset height and fixing the outer ring trusses; and step three, after the closure and unloading of all the outer ring trusses are finished. The invention provides a self-rotating accumulated lifting method of a large-span annular double-layer pipe truss, which comprises the steps of firstly lifting an outer ring truss to a first preset height along a tower frame, then mounting an overhanging truss at the bottom of the tower frame, mounting an inner ring truss on the overhanging truss on the ground, then carrying out split assembling and lifting rotation of a lower chord triangular area below the overhanging truss, then lifting the overhanging truss and the inner ring truss to a second preset height integrally, and carrying out accumulated lifting, so as to avoid building a supporting device for the overhanging truss and the inner ring truss.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a self-rotation accumulative lifting method of a large-span annular double-layer pipe truss.
Background
The top ring truss is positioned at the top of the lattice tower and is annularly connected with the tower to form a whole, the truss is 7m high, the elevation is 133 m-140 m, and a space structure system consisting of circular steel tubes is divided into an outer ring truss and an inner ring truss. The engineering load amounted to about 1600 tons.
Generally speaking, after the outer ring truss is firstly closed and unloaded, the inner ring truss is installed, because the cantilever truss connected with the inner ring truss is not a regular rectangle, and the lower chord triangular area of the cantilever truss needs to be assembled in pieces, a supporting device which needs to be built again is installed on the ground once, so that the installation steps of the cantilever truss are more complicated, and therefore, a self-rotation accumulative lifting method of a large-span annular double-layer pipe truss is needed to be provided, so as to at least partially solve the problems in the prior art.
Disclosure of Invention
A series of concepts in a simplified form are introduced in the summary section, which is described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to at least partially solve the problems, the invention provides a self-rotating accumulated lifting method of a large-span annular double-layer pipe truss, which comprises the following steps:
step one, building a plurality of towers according to a preset shape;
step two, sequentially lifting a plurality of outer ring trusses between two adjacent towers to a first preset height and fixing;
and step three, after the closure and the unloading of all the outer ring trusses are finished, the cantilever trusses are arranged on the inner side of the tower frame, the inner ring truss is installed between the two adjacent cantilever trusses, then the lower chord triangular area is split and assembled and lifted to rotate below the cantilever trusses, then the cantilever trusses and the inner ring truss are integrally lifted to a second preset height and lifted in an accumulated mode, finally the cantilever trusses and the inner ring truss are integrally lifted to the first preset height and then are in place, and finally the closure and the unloading of the inner ring truss are carried out.
According to the self-rotation accumulated lifting method of the large-span annular double-layer pipe truss, the lower chord triangular area comprises four single-piece trusses and seven scattered rods, the four single-piece trusses are respectively a first triangular single-piece truss, a second triangular single-piece truss, a double-V single-piece truss and a single-V single-piece truss, the first triangular single-piece truss and the second triangular single-piece truss are connected with a middle chord of the cantilever truss at intervals, the double-V single-piece truss is arranged at the front part of the lower chord triangular area and is respectively connected with the first triangular single-piece truss, the second triangular single-piece truss and the cantilever truss, the single-V single-piece truss is arranged at the rear part of the lower chord triangular area and is respectively connected with the first triangular single-piece truss, the second triangular single-piece truss and the cantilever truss, and the first triangular single-piece truss, the second triangular single-piece truss, the double-V single-piece truss and the single-V single-piece truss are connected with one another through the seven scattered rods.
According to the self-rotating accumulated lifting method of the large-span annular double-layer pipe truss, the segmented assembling, the lifting rotation and the accumulated lifting of the lower chord triangular space comprise the following steps:
step 1: after assembling the middle chord and the upper chord of the cantilever truss, performing ground assembling of four single trusses in a lower chord triangular area;
step 2: the first triangular single-piece truss and the second triangular single-piece truss are movably arranged on the upper chord of the cantilever truss respectively, and the double-V single-piece truss and the single-V single-piece truss are movably arranged on the middle chord of the cantilever truss respectively;
and 3, step 3: the inner ring truss and the cantilever truss are lifted, and at the moment, the four single trusses of the lower chord triangular area hung on the middle chord of the cantilever truss rotate along with the rods hung on the single trusses as shafts;
and 4, step 4: lifting is continued, and the four single-piece trusses continue to rotate along with the lifting until the four single-piece trusses in the lower chord triangular area leave the ground and become vertical;
then stopping lifting, locking lifting equipment, and simultaneously adopting a windproof measure to temporarily fix the cantilever truss; then adjusting the four single-piece trusses to the designed positions by adopting adjusting equipment;
and 5, step 5: installing the seven scattered rods, and then performing welding operation on a lower chord triangular area;
and 6, step 6: and when the welding line of the lower chord triangular area is qualified through flaw detection, continuing to lift.
According to the self-rotation accumulated lifting method of the large-span annular double-pipe truss, disclosed by the embodiment of the invention, all four single-piece trusses are rotationally connected with the cantilever truss through the plurality of hanging frame pieces.
According to the self-rotating accumulated lifting method of the large-span annular double-layer pipe truss, the hanging frame piece comprises an upper hanging part, two double-end connecting rods and a lower hanging part, the upper hanging part and the lower hanging part are respectively arranged at two ends of the double-end connecting rods, the upper hanging part is rotatably connected with a rod piece of the cantilever truss, the lower hanging part is rotatably connected with the rod piece of the single-piece truss, the upper hanging part comprises an upper hanging frame and an upper hanging seat, the upper hanging frame comprises a first hanging plate, a second hanging plate and a plurality of L-shaped upper hanging rods, the second hanging plate and the plurality of L-shaped upper hanging rods are arranged on the first hanging plate, the second hanging plate is located among the plurality of L-shaped upper hanging rods, the plurality of L-shaped upper hanging rods are connected with the upper hanging seat, and two first connecting pipes are arranged at the bottom of the first hanging plate; the lower hanging part comprises a U-shaped rod and a third hanging plate connected with the U-shaped rod, two second connecting pipes are arranged at the top of the third hanging plate, and the double-end connecting rod is in threaded connection with the first connecting pipe and the second connecting pipe respectively.
According to the self-rotating accumulative lifting method of the large-span annular double-layer pipe truss, the upper hanging seat comprises a seat body and a clamping mechanism, a first clamping groove and a first clamping cavity are formed in the seat body, the clamping mechanism comprises a clamping rod, a clamping top plate, a clamping inner plate, first springs, two bending fin plates and a braking module, the clamping rod is arranged in the first clamping cavity and penetrates into the first clamping groove, the clamping top plate is arranged at the outer end of the clamping rod, the two bending fin plates are respectively hinged to two sides of the outer end of the clamping rod, the bending fin plates are located on the inner side of the clamping top plate, the first springs are arranged in the first clamping cavity and abut against the clamping inner plate, the two braking modules are respectively arranged on two sides of the first clamping cavity, and the braking module is used for abutting against the clamping inner plate.
According to the self-rotating accumulated lifting method of the large-span annular double-layer pipe truss, the brake module comprises a wedge-shaped block, a first inner rod, a first inner rotating pipe, a first guide plate, a second spring, a second inner rod, a first guide wheel, a second guide wheel, a third inner rod, a second inner rotating pipe, a third spring, a second guide plate, a fourth inner rod and an outer rotating plate, the wedge-shaped block, the first inner rod, the first inner rotating pipe, the first guide plate, the second spring, the second inner rod, the first guide wheel and the second guide wheel are arranged in a second clamping cavity of the seat body, the second inner rod is rotatably arranged at the inner end of the second clamping cavity, the first inner rotating pipe is connected with the second inner rod, the second spring and the first guide plate are arranged in the first inner rotating pipe, one end of the first inner rod penetrates through the first inner rotating pipe and is connected with the first guide plate, the wedge-shaped block is connected with the other end of the first inner rod, the first guide wheel is arranged on the second inner rod, one end of the third inner rod is connected with the second guide wheel which is rotationally connected with the first guide wheel, the second internal rotating pipe, the third spring, the second guide plate and the fourth internal rod are arranged in a third clamping cavity of the seat body, the second internal rotating pipe is connected with the other end of the third inner rod, the third spring and the second guide plate are arranged in the second internal rotating pipe, one end of the fourth inner rod penetrates through the second inner rotating pipe and the third spring to be connected with the second guide plate, the outer rotating plate is arranged in the second clamping groove of the seat body and is connected with the other end of the fourth inner rod, and a plurality of clamping blocks are arranged on the outer rotating plate and correspond to the inner clamping grooves in the second clamping grooves.
According to the self-rotation accumulated lifting method of the large-span annular double-layer pipe truss disclosed by the embodiment of the invention, the upper hanging seat further comprises two auxiliary mechanisms, the two auxiliary mechanisms are arranged in the seat body and are positioned at two sides of the first clamping cavity, the auxiliary mechanisms comprise a stud, a guide rod, a third guide plate, a fourth spring, a fixed plate, a wire, a rotating plate, a brake block, a brake rod, a fourth guide plate, a fifth spring and a first handle rod, two fourth clamping cavities are arranged in the seat body, the two fourth clamping cavities are positioned at two sides of the first clamping cavity, the stud and the guide rod are arranged in the fourth clamping cavity in parallel, the fixed plate is arranged in the fourth clamping cavity, the stud and the guide rod are close to the first clamping groove, the third guide plate is arranged on the stud and the guide rod, the fourth spring is arranged between the fixed plate and the third guide plate, one end of the wire is connected with the bent fin, one end of the stud, the fixed plate, the guide rod and the fourth guide plate are connected with the third guide plate through the seat body and connected with the fourth spring guide plate, the rotating plate is arranged in the fourth clamping groove, one end of the rotating plate is connected with the fourth clamping groove, one end of the movable stud and is connected with the fourth clamping groove, one end of the brake block is arranged in the fourth clamping groove, one side of the movable clamping groove, and is arranged in the fourth clamping groove, one end of the fourth clamping groove, and is arranged in the fourth clamping groove, the movable clamping groove, one end of the stud and is arranged in the fourth clamping groove, and is arranged in the brake block, one side of the movable clamping groove, and is connected with the fourth clamping groove, and is arranged in the movable clamping groove, the brake block, and is arranged in the movable clamping groove, and the movable clamping groove, the brake block is arranged in the brake block, the brake block is arranged in the movable clamping groove, and is arranged in the movable clamping groove.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the invention provides a self-rotating accumulated lifting method of a large-span annular double-layer pipe truss, which comprises the steps of firstly lifting an outer ring truss to a first preset height along a tower frame, then mounting an overhanging truss at the bottom of the tower frame, mounting an inner ring truss on the overhanging truss on the ground, then carrying out split assembling and lifting rotation of a lower chord triangular area below the overhanging truss, and then lifting the overhanging truss and the inner ring truss to a second preset height integrally and lifting the overhanging truss and the inner ring truss in an accumulated manner, so that a supporting device for the overhanging truss and the inner ring truss is avoided being built, the large-span annular double-layer pipe truss is simple and convenient to install, and the installation cost is reduced.
Other advantages, objects, and features of the present invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the present invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic flow chart of the steps of the present invention.
FIG. 2 is a schematic flow chart of the steps of the lower chord trigone of the present invention.
Fig. 3 is a structural plan view of an outer ring truss according to the present invention.
Fig. 4 is a schematic view of the lifting of the inner ring truss at the tower of the present invention.
FIG. 5 is a schematic structural diagram of a first step of the lower chord trigone of the present invention.
FIG. 6 is a schematic structural diagram of the second step of the bottom chord trigone of the present invention.
FIG. 7 is a schematic structural diagram corresponding to step three of the lower chord triangular space in the present invention.
FIG. 8 is a schematic structural diagram corresponding to step four of the lower chord trigonal area of the present invention.
FIG. 9 is a schematic structural diagram corresponding to step five of the lower chord triangular space in the present invention.
FIG. 10 is a schematic structural diagram corresponding to the sixth step of the bottom chord trigone of the present invention.
FIG. 11 is a schematic view of the lower chord trigone of the present invention.
Fig. 12 is a schematic view showing the rotation of the single-piece truss during the lifting of the cantilever truss according to the present invention.
FIG. 13 is a schematic view of the structure of the hanging part of the present invention.
Fig. 14 is a schematic structural view of an upper hanger according to the present invention.
Fig. 15 is a schematic three-dimensional structure of the upper hanger according to the present invention.
Fig. 16 is a schematic structural view of the upper hanging seat of the present invention.
Fig. 17 is a schematic structural view of the click top plate in the present invention.
Fig. 18 is an enlarged structural view of a portion a in fig. 16 according to the present invention.
Fig. 19 is an enlarged structural view of a portion B of fig. 16 according to the present invention.
Fig. 20 is an enlarged view of the portion C of fig. 16 according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or combinations thereof.
As shown in fig. 1 to 10, the present invention provides a self-rotation cumulative lifting method for a large-span annular double-layer pipe truss, which includes the following steps:
step one, building a plurality of towers 100 according to a preset shape;
step two, sequentially lifting the plurality of outer ring trusses 101 between two adjacent towers 100 to a first preset height and fixing;
step three, after all the outer ring trusses 101 are closed and unloaded, the cantilever trusses 102 are arranged on the inner side of the tower 100, the inner ring truss 103 is installed between every two adjacent cantilever trusses 102, the lower chord triangular area 104 is split-assembled and lifted to rotate below the cantilever trusses 102, the cantilever trusses 102 are lifted to a second preset height and lifted in an accumulated mode, finally the cantilever trusses 102 and the inner ring truss 103 are lifted integrally to the first preset height and then are in place, and finally the inner ring truss 103 is closed and unloaded.
Here the first preset height is 140m and the second preset height is 7m.
The beneficial effects of the above technical scheme are that: through the design of the steps, the outer ring truss 101 is firstly lifted to a first preset height along the tower 100, then the cantilever truss 102 is installed at the bottom of the tower 100, the inner ring truss 103 is installed on the cantilever truss 102 on the ground, then the lower chord triangular area 104 is split and assembled and lifted to rotate below the cantilever truss 102, then the cantilever truss 102 and the inner ring truss 103 are integrally lifted to a second preset height and lifted in an accumulated mode, and therefore the supporting devices for the cantilever truss 102 and the inner ring truss 103 are avoided being built, the large-span annular double-layer pipe truss is simple and convenient to install, and installation cost is reduced.
In one embodiment, the lower chord triangular area 104 includes four single trusses and seven scattering rods 205, the four single trusses are a first triangular single truss 201, a second triangular single truss 202, a double V single truss 203 and a single V single truss 204, the first triangular single truss 201 and the second triangular single truss 202 are connected with the middle chord of the cantilever truss 102 at intervals, the double V single truss 203 is arranged at the front part of the lower chord triangular area 104 and is connected with the first triangular single truss 201, the second triangular single truss 202 and the cantilever truss 102, the single V single truss 204 is arranged at the rear part of the lower chord triangular area 104 and is connected with the first triangular single truss 201, the second triangular single truss 202 and the cantilever truss 102, and the first triangular single truss 201, the second triangular single truss 202, the double V single truss 203 and the single V single truss 204 are connected with each other through the seven scattering rods 205.
The working principle of the technical scheme is as follows: here, the total number of 27 rods in the lower-chord triangular area below the cantilever truss 102 results in a single triangular area weighing about 20 tons, and for convenience of installation, 27 rods are assembled in a pre-splitting manner in this embodiment, specifically, the 27 rods are divided into four single-piece trusses and seven scattered rods 205, that is, the lower-chord triangular area 104 includes four single-piece trusses and seven scattered rods 205, the four single-piece trusses are respectively a first triangular single-piece truss 201, a second triangular single-piece truss 202, a double-V single-piece truss 203 and a single-V single-piece truss 204, wherein the first triangular single-piece truss 201 and the second triangular single-piece truss 202 are connected with the middle chord of the cantilever truss 102 at intervals, the double-V single-piece truss 203 is installed in front of the lower-chord triangular area 104 and is connected with the first triangular single-piece truss 201, the second triangular single-piece truss 202 and the cantilever truss 102, the single-V single-piece truss 204 is installed in rear of the lower-chord triangular area 104 and is connected with the first triangular single-piece truss 201, the second triangular single-piece truss 202 and the double-V single-piece truss 205.
The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, provide the structure of lower chord triangular space in this embodiment, divide into four monolithic trusses and seven scattered poles 205 with lower chord triangular space to the convenient member of this lower chord triangular space of installing provides the installation effectiveness.
In one embodiment, the piece-wise assembling, lifting rotation and accumulated lifting of the lower triangular area 104 comprises the following steps:
step 1: after the assembly of the middle chord and the upper chord of the cantilever truss 102 is finished, the ground assembly of four single-piece trusses in the lower chord triangular area 104 is carried out;
step 2: the first triangular single-piece truss 201, the second triangular single-piece truss 202, the double-V single-piece truss 203 and the single-V single-piece truss 204 are movably arranged on the middle chord of the cantilever truss 102 respectively;
and 3, step 3: the inner ring truss 103 and the cantilever truss 102 are lifted, and at the moment, four single trusses of a lower chord triangular area 104 hung on a middle chord of the cantilever truss 102 rotate along with the hung rod piece as an axis;
and 4, step 4: lifting is continued, and the four single-piece trusses continue to rotate along with the lifting until the four single-piece trusses in the lower chord triangular area 104 leave the ground and become vertical; then stopping lifting, locking lifting equipment, and simultaneously adopting a windproof measure to temporarily fix the cantilever truss 102; then adjusting the four single-piece trusses to the designed positions by adopting adjusting equipment;
and 5, step 5: installing the seven scattered rods 205, and then performing welding operation on the lower chord triangular area 104;
and 6, step 6: and after the welding line of the lower chord triangular area 104 is qualified through flaw detection, the lifting is continued.
The beneficial effects of the above technical scheme are that: through the steps, installation of the lower chord triangular area by installation personnel can be facilitated, the lower chord triangular area at the bottom of the cantilever truss is specifically installed, the supporting device is prevented from being built, and the installation cost is reduced.
As shown in fig. 11-20, in one embodiment, four of the single-piece trusses are each pivotally connected to the cantilevered truss 102 by a plurality of hanger members 300.
Further, the hanging part 300 includes an upper hanging part, two double-end connecting rods 301, and a lower hanging part, the upper hanging part and the lower hanging part are respectively disposed at two ends of the double-end connecting rods 301, the upper hanging part is rotatably connected with the rod of the cantilever truss 102, the lower hanging part is rotatably connected with the rod of the single-piece truss, the upper hanging part includes an upper hanging rack 302 and an upper hanging seat, the upper hanging rack 302 includes a first hanging plate 303, a second hanging plate 304 and a plurality of L-shaped upper hanging rods 305, the second hanging plate 304 and the plurality of L-shaped upper hanging rods 305 are disposed on the first hanging plate 303, the second hanging plate 304 is located in the middle of the plurality of L-shaped upper hanging rods 305, the plurality of L-shaped upper hanging rods 305 are connected with the upper hanging seat, and two first connecting pipes 306 are disposed at the bottom of the first hanging plate 303; the lower hanging part comprises a U-shaped rod 307 and a third hanging plate 308 connected with the U-shaped rod 307, two second connecting pipes 309 are arranged at the top of the third hanging plate 308, and the double-end connecting rod 301 is connected with the first connecting pipe 306 and the second connecting pipe 309 in a threaded manner respectively.
The working principle and the beneficial effects of the technical scheme are as follows: in the embodiment, the structure of the hanging rack 300 is provided, by installing the hanging rack 300 on different single-piece trusses, when the overhanging truss is lifted, the different single-piece trusses gradually rotate to a vertical state below the overhanging truss through the hanging rack 300, that is, the first triangular single-piece truss 201, the second triangular single-piece truss 202, the double-V single-piece truss 203 and the single-V single-piece truss 204 can use the hanging rack 300 with different models according to actual needs;
specifically, the hanger 300 comprises an upper hanging part, two double-headed connecting rods 301 and a lower hanging part, wherein the upper hanging part and the lower hanging part are respectively arranged at two ends of the double-headed connecting rods 301, the upper hanging part is arranged on the rod 300a at the bottom of the cantilever truss, the lower hanging part is arranged on the rod at the bottom of the single-piece truss, and the middle part is provided with the two double-headed connecting rods 301;
the hanging rack 300 wraps a single truss up, the upper hanging part comprises an upper hanging rack 302 and an upper hanging seat, the upper hanging rack 302 comprises a first hanging plate 303, a second hanging plate 304 and a plurality of L-shaped upper hanging rods 305, the second hanging plate 304 and the plurality of L-shaped upper hanging rods 305 are installed on the first hanging plate 303, the second hanging plate 304 is positioned among the plurality of L-shaped upper hanging rods 305, the upper hanging seat is installed on a rod at the bottom of the cantilever truss, the upper hanging rack 302 is connected with the upper hanging seat through the plurality of L-shaped upper hanging rods 305, namely, the rod at the bottom of the cantilever truss is wrapped between the upper hanging seat and the upper hanging rack 302;
the lower hanging part comprises a U-shaped rod 307 and a third hanging plate 308 connected with the U-shaped rod 307, the U-shaped rod 307 is buckled on a rod piece at the bottom of the single-piece truss, the third hanging plate 308 is connected with the U-shaped rod 307 to wrap the rod piece, correspondingly, two first connecting pipes 306 are arranged at the bottom of the first hanging plate 303, two second connecting pipes 309 are arranged at the top of the third hanging plate 308, so that the double-head connecting rod 301 is in threaded connection with the first connecting pipe 306 and the second connecting pipe 309 respectively, other rod pieces in the single-piece truss are arranged between the two double-head connecting rods 301, namely, the rotation of the single-piece truss is realized through the rotation between the upper hanging part and the rod piece at the bottom of the cantilever truss, and the rod piece at the bottom of the single-piece truss is fixed by the lower hanging part, but the relative rotation cannot occur between the upper hanging part and the rod piece; the pylon component 300 thus provides mounting, guiding and securing for the various individual trusses throughout the process.
In one embodiment, the upper hanging seat comprises a seat body 310 and a clamping mechanism, a first clamping groove 311 and a first clamping cavity 312 are arranged on the seat body 310, the clamping mechanism comprises a clamping rod 313, a clamping top plate 314, a clamping inner plate 315, first springs 316, bent fins 317 and a braking module, the clamping rod 313 is arranged in the first clamping cavity 312 and penetrates into the first clamping groove 311, the clamping top plate 314 is arranged at the outer end of the clamping rod 313, the bent fins 317 are provided with two springs and hinged to two sides of the outer end of the clamping rod 313 respectively, the bent fins 317 are located on the inner side of the clamping top plate 314, the first springs 316 are arranged in the first clamping cavity 312 and abut against the clamping inner plate 315, the braking module is provided with two springs and abuts against two sides of the first clamping cavity 312 respectively, and the braking module is used for abutting against the clamping inner plate 315.
The working principle and the beneficial effects of the technical scheme are as follows: the embodiment provides a structure of an upper hanging seat, the upper hanging seat of the structure comprises a seat body 310 and a clamping mechanism, the clamping mechanism is installed on the seat body 310 and is matched with an upper hanging rack 302 to wrap a rod at the bottom of a cantilever truss, a plurality of first through holes 310a are designed on the seat body 310, a second through hole 305a is designed on an L-shaped upper hanging rod 305 in the upper hanging rack 302, the fixed connection between the upper hanging rack 102 and the seat body 300 is realized through the first through holes 310a, the second through holes 305a and an installation rod 310b, and the subsequent disassembly is also facilitated;
furthermore, a first clamping groove 311 and a first clamping cavity 312 are formed in the seat body 310, the mounting mechanism comprises a clamping rod 313, a clamping top plate 314, a clamping inner plate 315, a first spring 316, a bent fin plate 317 and a brake module, the first spring 316 and the clamping inner plate 315 are mounted in the first clamping cavity 312, the clamping inner plate 315 is connected with the inner end of the clamping rod 313, the outer end of the clamping rod 313 penetrates into the first clamping groove 311, the outer end of the clamping rod 313 is connected with the clamping top plate 314, the clamping top plate 314 is bent and matched with the outer wall of the rod piece, meanwhile, the two bent fin plates 317 are hinged to the outer end of the clamping rod 313, in the process that the cantilever truss is gradually lifted to a second preset height, the single truss rotates relative to the cantilever truss, the weight of the single truss can be gradually pressed onto the clamping top plate 314, the clamping top plate moves upwards and pushes the clamping rod 313 into the first clamping cavity 312 and presses the first spring 316, the outer wall of the two bent fin plates contacts the outer wall of the first clamping groove 315 to prevent the clamping inner plate 312 from being further clamped by the clamping rod 311, the clamping rod 312, the two bent fin plates from being further pressed against the inner wall of the first clamping groove 312, the first clamping rod 312, the inner plate 312, and the two sides of the first clamping inner plate 312 are further prevented from being clamped by the clamping rod 311, and the two bent and the two cantilever truss from being further supported by the clamping rod 312, and the first clamping rod 311, and the two bent inner plate 311.
In one embodiment, the brake module includes a wedge block 318, a first inner rod 319, a first inner rotating pipe 320, a first guide plate 321, a second spring 322, a second inner rod 323, a first guide wheel 324, a second guide wheel 325, a third inner rod 326, a second inner rotating pipe 327, a third spring 328, a second guide plate 329, a fourth inner rod 330, and a first rotating plate 331, the wedge block 318, the first inner rod 319, the first inner rotating pipe 320, the first guide plate 321, the second spring 322, the second inner rod 323, the first guide wheel 324, the second guide wheel 325 are disposed in a second clamping cavity 334 of the holder body 310, the second inner rod 323 is rotatably disposed at an inner end of the second clamping cavity 334, the first inner rotating pipe 320 is connected to the second inner rod 323, the second spring 322, the first guide plate 321 is disposed in the first inner rotating pipe 320, one end of the first inner rod 319 passes through the first inner rotating pipe 320 and is connected to the first guide plate 321, the wedge block 318 is connected to the other end of the first inner rod 319, the first guide wheel 324 is disposed on the second inner rod 323, one end of the third inner rod 326 is connected to the second guide wheel 325, the second guide wheel 325 is rotatably connected to the first guide wheel 324, the second inner rotating tube 327, the third spring 328, the second guide plate 329, and the fourth inner rod 330 are disposed in the third engaging cavity 332 of the holder body 310, the second inner rotating tube 327 is connected to the other end of the third inner rod 326, the third spring 328 and the second guide plate 329 are disposed in the second inner rotating tube 327, one end of the fourth inner rod 330 passes through the second inner rotating tube 327 and the third spring 328 to be connected to the second guide plate 329, the first rotating plate 331 is disposed in the second engaging groove 335 of the holder body 310, and the first rotating plate 331 is connected to the other end of the fourth inner rod 330, and a plurality of latch blocks 333 are provided on the first rotating plate 331, and the latch blocks 333 correspond to the inner latch grooves 336 in the second latch grooves 335.
The working principle and the beneficial effects of the technical scheme are as follows: the present embodiment provides a structure of a brake module, the brake module of the structure includes a wedge block 318, a first inner rod 319, a first inner rotating pipe 320, a first guide plate 321, a second spring 322, a second inner rod 323, a first guide wheel 324, a second guide wheel 325, a third inner rod 326, a second inner rotating pipe 327, a third spring 328, a second guide plate 329, a fourth inner rod 330, and a first rotating plate 331, the wedge block 318, the first inner rod 319, the first inner rotating pipe 320, the first guide plate 321, the second spring 322, the second inner rod 323, the first guide wheel 324, and the second guide wheel 325 are installed in a second clamping cavity 334 of the seat body 310, and the second inner rotating pipe 327, the third spring 328, the second guide plate 329, and the fourth inner rod 330 are installed in a third clamping cavity 332 of the seat body 310;
when the brake module is used, firstly, the wedge block 318 in the brake module needs to be operated, so that the first wedge wall of the wedge block 318 rotates to face the clamping inner plate 315, and both ends of the clamping inner plate 315 have corresponding second wedge walls 315a, so that when the clamping inner plate 315 is pushed by the clamping rod 313 to the inside of the first clamping cavity 312, the second wedge wall 315a of the clamping inner plate 315 contacts with the first wedge wall of the wedge block 318, and then the clamping inner plate 315 pushes the wedge block 318 to move into the second clamping cavity 334, so that the clamping inner plate 315 continues to move to the bottom of the first clamping cavity 312, then the wedge block 318 moves out under the action of the second spring 322 to block the clamping inner plate 315, specifically, an operator moves the first rotating plate 331 outwards, so that the clamping block 333 on the first rotating plate 331 comes out from the inner clamping groove 336 in the second clamping groove 335, and then rotates the first rotating plate 331, the first rotating plate 331 drives the fourth inner bar 330 to rotate, the fourth inner bar 330 also drives the second inner bar structure 327 to drive the second inner bar 326 or the inner bar structure 325 to rotate to drive the second inner bar 326, so that the second inner bar 324 and the second inner bar structure 325 rotate to rotate, and further to drive the second inner bar 324 to rotate the second inner bar 324, and to rotate the second clamping inner bar 324, so that the second clamping inner bar 326 or the second clamping inner bar 320 to rotate.
In one embodiment, the hanging seat further includes two auxiliary mechanisms, two auxiliary mechanisms are disposed in the seat body 310 and located at two sides of the first clamping cavity 312, the assist mechanism includes a stud 337, a guide bar 338, a third guide plate 339, a fourth spring 340, a fixed plate 341, a wire 342, a second rotating plate 343, a brake block 344, a brake lever 345, a fourth guide plate 346, a fifth spring 347, and a first handle lever 348, two fourth clamping cavities 349 are arranged in the holder body 310, the two fourth clamping cavities 349 are located at two sides of the first clamping cavity 312, the stud 337 and the guide bar 338 are arranged in parallel in the fourth clamping cavity 349, the fixing plate 341 is disposed in the fourth clamping cavity 349, the stud 337 and the guide bar 338 are located near the first clamping slot 311, the third guide plate 339 is disposed on the stud 337 and the guide bar 338, the fourth spring 340 is disposed between the fixing plate 341 and the third guide plate 339, one end of the wire 342 is connected to the bent fin 317, one end of the third guide plate 339 passes through the base body 310, the fixing plate 341 and the fourth spring 340 and is connected with the second guide plate 341, the second rotating plate 343 is disposed in the third clamping groove 350 of the holder body 310 and connected to the outer end of the stud 337, a fourth clamping groove 351 is formed at one side of the third clamping groove 350, the fifth spring 347 and the fourth guide plate 346 are arranged in the fourth clamping groove 351, one end of the brake lever 345 is inserted into the fourth clamping groove 351 and connected with the fourth guide plate 346, the brake block 344 is disposed at the other end of the brake lever 345 and is engaged with the upper concave-convex groove of the second rotating plate 343, the first handle bar 348 is disposed on the fourth guide 346 and movably connected to the fourth catching groove 351.
The working principle and the beneficial effects of the technical scheme are as follows: the upper hanging seat in this embodiment further includes two auxiliary mechanisms, the two auxiliary mechanisms are respectively disposed in the seat body 310 and located at two sides of the first clamping cavity 312, the bent fin plates 317 are connected through the auxiliary mechanisms to facilitate subsequent opening of the two bent fin plates 317, and the upper hanging seat is detached from the rod at the bottom of the cantilever truss;
specifically, the auxiliary mechanism includes a stud 337, a guide rod 338, a third guide plate 339, a fourth spring 340, a fixed plate 341, a wire 342, a second rotating plate 343, a brake block 344, a brake bar 345, a fourth guide plate 346, a fifth spring 347 and a first handle bar 348, and correspondingly, two fourth locking cavities 349 are formed in the seat body 310, and the two fourth locking cavities 349 are located at both sides of the first locking cavity 312, and the above structure is installed in the fourth locking cavities, wherein when the bar member at the bottom of the cantilever truss is installed between the two curved fin plates, an operator moves the first handle bar 348 toward the first locking cavity 312, and then drives the fourth guide plate 346 to press the fifth spring 347, and further drives the guide plates 345 and 344 to move away from the upper concave-convex groove of the brake block 343 through the fourth locking cavity 346, and then the operator rotates the second rotating plate 343a on the second rotating plate 343 in the third locking cavity 350, and then drives the brake bar 343a second handle bar 343a on the second rotating plate 343 in the third rotating plate 343 to rotate the stud 343, so that the second rotating plate 337 rotates, and drives the brake bar 337 and the third guide plate 339 to move the guide bar 343, and the bottom of the cantilever truss is moved away from the stud 317, and the guide bar 317, and then the bottom of the stud 337, and the suspension truss can be moved away from the guide bar 317, and the bottom of the suspension truss holder 317, and the stud 337, and the suspension truss can be opened along the stud 337, and the guide bar 317; then, the operator operates the above structure in the reverse direction, so that the two bent fins 317 wrap the rod, wherein the fourth spring 340 is arranged between the fixing plate 341 and the third guide plate 339 to pre-tighten the wire 342, thereby preventing the wire 342 from loosening after a long time.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (3)
1. A self-rotation accumulated lifting method of a large-span annular double-pipe truss is characterized by comprising the following steps:
step one, building a plurality of towers (100) according to a preset shape;
step two, sequentially lifting a plurality of outer ring trusses (101) between two adjacent towers (100) to a first preset height and fixing;
step three, after all the outer ring trusses (101) are closed and unloaded, the cantilever trusses (102) are arranged on the inner side of the tower (100), the inner ring truss (103) is installed between every two adjacent cantilever trusses (102), the lower chord triangular area (104) is split, assembled and lifted to rotate below the cantilever trusses (102), the cantilever trusses (102) are lifted to a second preset height and lifted in an accumulated mode, finally the cantilever trusses (102) and the inner ring truss (103) are lifted integrally to the first preset height and then are in place, and finally the inner ring truss (103) is closed and unloaded;
the lower chord triangular area (104) comprises four single trusses and seven scattered rods (205), the four single trusses are respectively a first triangular single truss (201), a second triangular single truss (202), a double V single truss (203) and a single V single truss (204), the first triangular single truss (201) and the second triangular single truss (202) are connected with a middle chord of the cantilever truss (102) at intervals, the double V single truss (203) is arranged at the front part of the lower chord triangular area (104) and is connected with the first triangular single truss (201), the second triangular single truss (202) and the cantilever truss (102) respectively, the single V single truss (204) is arranged at the rear part of the lower chord triangular area (104) and is connected with the first triangular single truss (201), the second triangular single truss (202) and the cantilever truss (102) respectively, and the first triangular single truss (201), the second triangular single truss (202), the double V single truss (203) and the single V single triangular single truss (204) are connected with one another through the seven scattered rods (205);
the split assembling, lifting rotation and accumulated lifting of the lower chord triangular area (104) comprise the following steps:
step 1: after the assembly of the middle chord and the upper chord of the cantilever truss (102) is finished, the ground assembly of four single trusses in a lower chord triangular area (104) is carried out;
step 2: the first triangular single-piece truss (201), the second triangular single-piece truss (202), the double-V single-piece truss (203) and the single-V single-piece truss (204) are movably arranged on the middle chord of the cantilever truss (102) respectively;
and 3, step 3: the inner ring truss (103) and the cantilever truss (102) are lifted, and at the moment, four single trusses of a lower chord triangular area (104) hung on a middle chord of the cantilever truss (102) rotate along with the hung rod piece as an axis;
and 4, step 4: the four single-chip trusses are continuously lifted, and the four single-chip trusses are continuously rotated along with the lifting until the four single-chip trusses in the lower chord triangular area (104) leave the ground and become vertical; then stopping lifting, locking lifting equipment, and simultaneously adopting a windproof measure to temporarily fix the cantilever truss (102); then adjusting the four single trusses to the designed positions by adopting adjusting equipment;
and 5, step 5: installing the seven scattered rods (205), and then performing welding operation on the lower chord triangular area (104);
and 6, step 6: after the welding line of the lower chord triangular area (104) is qualified through flaw detection, continuing to lift;
the four single-piece trusses are rotationally connected with the cantilever truss (102) through a plurality of hanging frame pieces (300);
the hanging rack piece (300) comprises an upper hanging part, two double-end connecting rods (301) and a lower hanging part, wherein the upper hanging part and the lower hanging part are respectively arranged at two ends of the double-end connecting rods (301), the upper hanging part is rotatably connected with a rod piece of the cantilever truss (102), the lower hanging part is rotatably connected with the rod piece of the single-piece truss, the upper hanging part comprises an upper hanging rack (302) and an upper hanging seat, the upper hanging rack (302) comprises a first hanging plate (303), a second hanging plate (304) and a plurality of L-shaped upper hanging rods (305), the second hanging plate (304) and the plurality of L-shaped upper hanging rods (305) are arranged on the first hanging plate (303), the second hanging plate (304) is positioned in the middle of the plurality of L-shaped upper hanging rods (305), the plurality of L-shaped upper hanging rods (305) are connected with the upper hanging seat, and two first connecting pipes (306) are arranged at the bottom of the first hanging plate (303); the lower hanging part comprises a U-shaped rod (307) and a third hanging plate (308) connected with the U-shaped rod (307), two second connecting pipes (309) are arranged at the top of the third hanging plate (308), and the double-end connecting rod (301) is in threaded connection with the first connecting pipe (306) and the second connecting pipe (309) respectively;
the upper hanging seat comprises a seat body (310) and a clamping mechanism, wherein a first clamping groove (311), a first clamping cavity (312) are formed in the seat body (310), the clamping mechanism comprises a clamping rod (313), a clamping top plate (314), a clamping inner plate (315), a first spring (316), a bent fin plate (317) and a braking module, the clamping rod (313) is arranged in the first clamping cavity (312) and penetrates into the first clamping groove (311), the clamping top plate (314) is arranged on the outer end of the clamping rod (313) and is matched with the outer wall of a rod piece, the bent fin plate (317) is provided with two parts which are respectively hinged to two sides of the outer end of the clamping rod (313), the bent fin plate (317) is positioned on the inner side of the clamping top plate (314), the first spring (316) is arranged in the first clamping cavity (312) and abuts against the clamping inner plate (315), the braking module is provided with two parts which are respectively positioned on two sides of the first clamping cavity (312) and is connected with the inner plate (315) and is used for gradually pushing the clamping inner plate (315) to push the clamping inner end of the clamping inner plate to the first clamping top plate to gradually move in the first clamping rod, so that the clamping rod (312) can be gradually pushed and can be lifted to the first clamping top plate to the first clamping rod and can be pushed to the first clamping top plate to move in the first clamping cavity and gradually in the first clamping rod, and gradually push the clamping rod (312) and can be pushed by the clamping rod, and can be pushed by the inner plate, and can be pushed to the inner end of the first clamping rod, and be pushed to the first clamping rod (312), and the outer walls of the two bent fin plates are in contact with the first clamping groove, and the groove walls of the first clamping groove are in a slope shape, so that the bent fin plates are in contact with the groove walls of the first clamping groove, and the two bent fin plates further wrap the rod piece of the cantilever truss from two sides.
2. The self-rotating accumulated lifting method of the large-span annular double-layer pipe truss as claimed in claim 1, wherein the brake module comprises a wedge block (318), a first inner rod (319), a first inner rotating pipe (320), a first guide plate (321), a second spring (322), a second inner rod (323), a first guide wheel (324), a second guide wheel (325), a third inner rod (326), a second inner rotating pipe (327), a third spring (328), a second guide plate (329), a fourth inner rod (330) and a first rotating plate (331), the wedge block (318), the first inner rod (319), the first inner rotating pipe (320), the first guide plate (321), the second spring (322), the second inner rod (323), the first guide wheel (324) and the second guide wheel (325) are arranged in a second clamping cavity (334) of the second clamping cavity (334), the second inner rod (323) is rotatably arranged at an inner end of the second clamping cavity (334), the first guide plate (320) is connected with the second inner rotating pipe (323), the first guide plate (320) is connected with the first inner rod (319), the other end of the first inner rotating pipe (321) is connected with the first inner rotating pipe (319), and the first rotating plate (320), the first guide wheel (324) is arranged on the second inner rod (323), one end of the third inner rod (326) is connected with the second guide wheel (325), the second guide wheel (325) is rotatably connected with the first guide wheel (324), the second inner rotating tube (327), the third spring (328), the second guide plate (329) and the fourth inner rod (330) are arranged in a third clamping cavity (332) of the holder body (310), the second inner rotating tube (327) is connected with the other end of the third inner rod (326), the third spring (328) and the second guide plate (329) are arranged in the second inner rotating tube (327), one end of the fourth inner rod (330) penetrates through the second inner rotating tube (327) and the third spring (328) to be connected with the second guide plate (329), the first rotating plate (331) is arranged in a second clamping groove (335) of the holder body (310), the first rotating plate (331) is connected with the other end of the fourth inner rod (330), and a plurality of clamping grooves (335) are formed in the holder body (336), and the plurality of clamping blocks (333) are arranged on the inner rotating plate (335).
3. The self-rotating cumulative lifting method of the large-span annular double-layer pipe truss according to claim 1, wherein the hanging seat further comprises two auxiliary mechanisms, the two auxiliary mechanisms are arranged in the seat body (310) and located at two sides of the first clamping cavity (312), the auxiliary mechanisms comprise a stud (337), a guide rod (338), a third guide plate (339), a fourth spring (340), a fixed plate (341), a wire (342), a second rotating plate (343), a brake block (344), a brake bar (345), a fourth guide plate (346), a fifth spring (347) and a first handle rod (348), the seat body (310) is internally provided with two fourth clamping cavities (349), the two fourth clamping cavities (349) are located at two sides of the first clamping cavity (312), the stud (337) and the guide rod (338) are arranged in the fourth clamping cavity (349) in parallel, the fixed plate (341) is arranged in the fourth clamping cavity (349), the guide plate (337) and the guide rod (338) are arranged close to the first clamping cavity (312), the stud (337) and the guide rod (338) are arranged near the first clamping cavity (341), the third guide rod (339) is arranged between the third guide plate (339) and the guide plate (339), the bent end of the guide plate (339) is connected to the third guide plate (317), one end of the brake lever passes through the base body (310), the fixing plate (341) and the fourth spring (340) and is connected with the third guide plate (339), the second rotating plate (343) is arranged in a third clamping groove (350) of the base body (310) and is connected with the outer end of the stud (337), a fourth clamping groove (351) is arranged on one side of the third clamping groove (350), the fifth spring (347) and the fourth guide plate (346) are arranged in the fourth clamping groove (351), one end of the brake lever (345) passes through the fourth clamping groove (351) and is connected with the fourth guide plate (346), the brake block (344) is arranged at the other end of the brake lever (345) and is clamped with an upper concave-convex groove of the second rotating plate (343), and the first handle lever (348) is arranged on the fourth guide plate (346) and is movably connected with the fourth clamping groove (351).
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| CN202111084821.4A CN114059669B (en) | 2021-09-16 | 2021-09-16 | Self-rotating accumulated lifting method for large-span annular double-layer pipe truss |
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| CN202111084821.4A CN114059669B (en) | 2021-09-16 | 2021-09-16 | Self-rotating accumulated lifting method for large-span annular double-layer pipe truss |
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| CN102704606A (en) * | 2012-04-04 | 2012-10-03 | 中国航空规划建设发展有限公司 | Method for regulating floor slab tension in overhanging steel-concrete composite floor |
| CN103628691A (en) * | 2013-12-12 | 2014-03-12 | 上海通用金属结构工程有限公司 | Large-span cantilever truss construction support process |
| CN108179816B (en) * | 2017-12-15 | 2019-12-20 | 浙江精工钢结构集团有限公司 | Deviation lifting sliding device and method |
| CN109235771B (en) * | 2018-11-16 | 2023-06-16 | 中建二局安装工程有限公司 | Large-span concave fish belly type combined light truss structure and mounting method thereof |
| CN111021779B (en) * | 2019-12-19 | 2023-03-31 | 中建钢构工程有限公司 | Integral descending and dismantling construction method for space net rack and auxiliary supporting mechanism |
| CN112779993A (en) * | 2021-01-25 | 2021-05-11 | 中建八局西南建设工程有限公司 | Large-span welding ball prestress net frame and twice-accumulated integral lifting construction method thereof |
| CN112942790A (en) * | 2021-04-08 | 2021-06-11 | 中国华西企业有限公司 | Cantilever climbing device and construction method of cantilever structure |
| CN113175089A (en) * | 2021-04-25 | 2021-07-27 | 中建科工集团有限公司 | Construction method of large-span heavy cantilever truss |
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