CN116638246A - Simple positioning method for installing steel pipe arch truss arch rib bracket - Google Patents
Simple positioning method for installing steel pipe arch truss arch rib bracket Download PDFInfo
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- CN116638246A CN116638246A CN202310838794.8A CN202310838794A CN116638246A CN 116638246 A CN116638246 A CN 116638246A CN 202310838794 A CN202310838794 A CN 202310838794A CN 116638246 A CN116638246 A CN 116638246A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 129
- 239000010959 steel Substances 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000009434 installation Methods 0.000 claims abstract description 21
- 238000002360 preparation method Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000005441 aurora Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
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- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The application discloses a simple positioning method, in particular discloses a simple positioning method for installing a steel pipe arch truss arch rib bracket, and belongs to the technical field of design and manufacture of construction process equipment of steel structure bridge engineering structures. The simple positioning method for installing the bracket of the arch rib of the steel pipe arch truss can be used for directly and accurately preassembling the bracket to the corresponding position on the steel truss. The simple positioning method comprises arch rib preparation and bracket steel tube preparation, wherein a laser alignment instrument is installed in the bracket steel tube which is qualified in preparation, measuring light rays of the laser alignment instrument coincide with the axial center line of the bracket steel tube, measuring light rays emitted by the laser alignment instrument are aligned Ji Shiqian on the left arch rib or the right arch rib which is qualified in placement, cross lines are installed on the steel tube marked by the left arch rib or the right arch rib, and finally the bracket steel tube is welded on the left arch rib or the right arch rib in a positioning mode to finish positioning and installation work of the bracket steel tube.
Description
Technical Field
The application relates to a simple positioning method, in particular to a simple positioning method for installing a steel pipe arch truss arch rib bracket, and belongs to the technical field of construction technology of steel structure bridge engineering structures.
Background
The steel structure has the characteristics of light dead weight, high assembly and construction speed and the like, and more large-scale venues and steel pipe arch bridge projects adopt pipe truss structures. In the manufacturing and installation of steel structure pipe trusses, the connection between each pipe truss is mostly connected by bracket. The mounting point and the angle of bracket are accurately controlled, the bracket and the connection pipe can be aligned, the butt joint seam is ensured to be aligned, the seam width meets the welding design requirement, and the welding quality and the stress condition of the supporting structure can be ensured. The positioning of the bracket is difficult due to the large distance between each pipe truss and the large angle of the connecting pipe.
The conventional mounting and positioning method of the bracket is to spot-weld the bracket and the connecting pipe together, then to hoist and position the bracket in a trial-installation state and firmly spot-weld the bracket to the corresponding position of the pipe truss, then to cut and discharge the connecting pipe, and to weld the bracket. The process method occupies long time of hoisting equipment, has influence on appearance quality of welding surfaces, increases procedures of assembly spot welding and cutting, has lower assembly efficiency, is unfavorable for saving electric energy, welding materials and cutting gas, and increases safety risks.
The existing pipe truss installation and positioning technology, namely the positioning method marked on the main rod piece is adopted in CN 103389081B of the positioning method of the intersecting opening space of the secondary rod of the pipe truss, is applicable to the condition that the secondary rod piece is directly connected without a bracket, and cannot be used for determining the installation angle of the connecting bracket of the overlong rod piece.
Disclosure of Invention
The technical problems to be solved by the application are as follows: the simple positioning method for installing the bracket of the arch rib of the steel pipe arch truss can be used for directly and accurately preassembling the bracket to the corresponding position on the steel truss.
The technical scheme adopted for solving the technical problems is as follows: a simple positioning method for installing a steel pipe arch truss arch rib bracket comprises arch rib preparation and bracket steel pipe preparation, wherein a laser alignment instrument is installed in a bracket steel pipe which is qualified in preparation, measuring light rays of the laser alignment instrument coincide with the axial center line of the bracket steel pipe, measuring light rays emitted by the laser alignment instrument are aligned on a left arch rib or a right arch rib which is qualified in placement, a cross line is installed on the steel pipe marked by the left arch rib or the right arch rib by alignment Ji Shiqian, and finally the bracket steel pipe is welded on the left arch rib or the right arch rib in a positioning mode to finish positioning and installing work of the bracket steel pipe.
Further, when the bracket steel tube is prepared, intersecting lines are cut at the end parts of which are welded with the left arch rib or the right arch rib, and when the intersecting lines are aligned on the left arch rib or the right arch rib which are qualified in placement and the steel tube is installed by measuring light rays, the four azimuth mark lines at one end of the bracket steel tube, which are cut with the intersecting lines, are aligned with the intersecting lines on the corresponding arch ribs respectively except for the coincidence of center points.
The preferable mode of above-mentioned scheme is, laser alignment counterpoint appearance be a laser instrument, the laser instrument is through the coaxial installation of adjustable simple and easy mounting bracket measuring light and bracket steel pipe in the preparation qualified bracket steel pipe.
Further, the simple and easy mounting bracket with adjustable is including supporting dead lever subassembly and simple and easy adjustment mechanism, and the laser alignment counterpoint appearance is through simple and easy adjustment mechanism measuring light and the overlapping of bracket steel pipe's axial central line under the cooperation of supporting the dead lever subassembly and is arranged in the bracket steel pipe.
The preferred mode of the scheme is that the supporting and fixing rod assembly comprises three groups of self-supporting and fixing rod groups, and each group of self-supporting and fixing rod groups uniformly distributed along the circumferential direction can reciprocate along the length direction and are movably connected with the simple adjusting mechanism; the free ends of the self-holding supporting fixed rod groups of each group which are adjusted to be in position are supported on the inner side walls of the ends of the bracket steel pipes which need to be installed.
Further, each group of self-supporting fixed rod group comprises a self-supporting seat, a supporting connecting rod and a movable adjusting piece, the movable adjusting piece is axially arranged on the supporting connecting rod, the supporting connecting rod which is adjusted to be in place by the movable adjusting piece under the cooperation of a simple adjusting mechanism is detachably and fixedly connected with the inner side wall of the end part of the bracket steel tube to be installed through the self-supporting seat,
the self-holding supporting seat is composed of a disc-shaped magnet, a protective steel shell is coated on the outer side of the disc-shaped magnet, and the free end of the supporting connecting rod is fixedly connected with the disc-shaped magnet.
The preferred mode of above-mentioned scheme is, and simple and easy adjustment mechanism includes mounting bracket and the simple and easy adjustment subassembly of self-adaptation, and the simple and easy adjustment subassembly of self-adaptation is arranged in the geometric center department in the mounting bracket, and laser alignment counterpoint appearance is arranged on the simple and easy adjustment subassembly of self-adaptation, and the support connecting rod is through removing adjusting piece and the simple adjustment subassembly of self-adaptation and follow the axial reciprocating motion's of cooperation at the mounting bracket and arrange on simple and easy adjustment mechanism.
Further, the mounting bracket comprises a mounting sealing plate and a shell, the side wall of the shell is provided with a plurality of through holes corresponding to the number of the support connecting rods, the shell is covered on the mounting sealing plate, the self-adaptive simple adjusting assembly is arranged in a mounting cavity formed by the shell and the mounting sealing plate through the mounting sealing plate, the laser alignment contraposition instrument is arranged on one end part of the self-adaptive simple adjusting assembly, which penetrates out of the shell from the end face, and the two ends of the support connecting rods extend out of the through holes and are movably connected with the self-adaptive simple adjusting assembly in the mounting cavity through parts.
The preferred mode of above-mentioned scheme is, the simple and easy adjusting part of self-adaptation includes a set of antifriction bearing at least, an installation axle and a pair of adjusting gear, adjusting gear passes through the installation axle to be adorned admittedly on antifriction bearing's inner circle, antifriction bearing passes through the outer lane to be installed on installing the shrouding, remove the regulating part and be a set of rack along axial arrangement on one side of support connecting rod, the rack of each support connecting rod meshes with the epaxial adjusting gear of installation respectively under the cooperation of casing simultaneously, the laser alignment counterpoint appearance is arranged on the installation axle from the end of terminal surface wearing out the casing.
Further, the three support connecting rods comprise a solid rod and two slotting rods, the cross section area of the two slotting rods is equal to that of the solid rod, the slotted holes formed in the two slotting rods are gradually enlarged, the three support connecting rods arranged along the circumferential direction are inserted into the slotting rod with the relatively smaller slotted holes according to the solid rod, the slotting rod with the relatively smaller slotted holes is inserted into the slotted holes, the through hole of the slotting rod with the relatively larger slotted holes passes through the shell,
the top of the mounting shaft is also provided with a rolling limit bearing, and the top of the mounting shaft is supported on the end face of the shell through the rolling limit bearing.
The beneficial effects of the application are as follows: the technical scheme provided by the application is based on the manufactured arch rib and bracket steel tube, firstly, a laser alignment aligner is arranged in the bracket steel tube which is qualified to manufacture, the measuring light of the laser alignment aligner is overlapped with the axial center line of the bracket steel tube, then, the measuring light emitted by the laser alignment aligner is aligned on the left arch rib or the right arch rib which is qualified to be placed, the cross line is arranged on the steel tube marked by the left arch rib or the right arch rib by alignment Ji Shiqian, and finally, the steel tube is welded on the left arch rib or the right arch rib in a positioning way to finish the positioning and the installation work of the bracket steel tube. When the bracket steel pipes are independently arranged on the arch ribs which are required to be butted, the two groups of steel pipes with the connection relationship are aligned by the laser alignment aligner. Therefore, the current situation that spot welding butt joint between bracket steel pipes and connecting pieces is needed in the prior art, then the bracket steel pipes are installed in the pre-installed state of an arch rib and spot welded, finally the bracket steel pipes are welded to corresponding positions of the arch rib after the connecting pieces are removed is changed, laser alignment counterpoint instruments are directly installed in two groups of bracket steel pipes which need to be in butt joint, and then alignment and counterpoint are carried out through the laser alignment counterpoint instruments when the corresponding bracket steel pipes are installed to the corresponding positions of the arch rib, namely the butt spot welding of the bracket steel pipes and the connecting pieces is omitted, the subsequent dismantling work is omitted, the purpose that the bracket can be directly pre-installed to the corresponding positions on the arch rib of the steel truss is achieved, the assembly speed is improved, and the assembly quality can be effectively guaranteed.
Drawings
FIG. 1 is a schematic diagram of a laser alignment aligner installed in bracket steel according to the present application for a simple positioning method for installing a steel pipe arch truss rib bracket;
FIG. 2 is a schematic three-dimensional view of a simple positioning method for installing a steel pipe arch truss arch rib bracket according to the present application, which involves an adjustable simple mounting bracket for installing a laser alignment aligner;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a schematic three-dimensional view of a simple positioning method for installing a steel pipe arch truss arch rib bracket of the application, which involves removing a shell from an adjustable simple mounting frame for installing a laser alignment aligner;
fig. 5 is a front view of fig. 4.
Marked in the figure as: bracket steel pipe 1, laser alignment counterpoint appearance 2, adjustable simple and easy mounting bracket 3, support dead lever subassembly 4, simple and easy adjustment mechanism 5, self-sustaining support dead lever group 6, self-sustaining supporting seat 7, support connecting rod 8, remove adjusting part 9, mounting bracket 10, self-adaptation simple and easy adjustment subassembly 11, installation shrouding 12, casing 13, pass hole 14, rolling support bearing 15, installation axle 16, adjusting gear 17, rolling limit bearing 18.
Detailed Description
The simple positioning method for installing the bracket of the arch rib of the steel pipe arch truss, which is provided by the application, can be used for directly preassembling the bracket to the corresponding position on the steel truss accurately, as shown in fig. 1, 2, 3, 4 and 5. The simple positioning method comprises arch rib preparation and bracket steel tube preparation, wherein the simple positioning method comprises the steps of firstly installing a laser alignment aligner 2 in a bracket steel tube 1 which is qualified in preparation, enabling measuring light rays of the laser alignment aligner 2 to coincide with the axial center line of the bracket steel tube 1, then aligning Ji Shiqian on a steel tube marked by a left arch rib or a right arch rib through measuring light rays emitted by the laser alignment aligner 2, and finally positioning and welding the bracket steel tube 1 on the left arch rib or the right arch rib to finish positioning and installation work of the bracket steel tube 1. The technical scheme provided by the application is based on the manufactured arch rib and bracket steel tube, firstly, a laser alignment aligner is arranged in the bracket steel tube which is qualified to manufacture, the measuring light of the laser alignment aligner is overlapped with the axial center line of the bracket steel tube, then, the measuring light emitted by the laser alignment aligner is aligned on the left arch rib or the right arch rib which is qualified to be placed, the cross line is arranged on the steel tube marked by the left arch rib or the right arch rib by alignment Ji Shiqian, and finally, the steel tube is welded on the left arch rib or the right arch rib in a positioning way to finish the positioning and the installation work of the bracket steel tube. When the bracket steel pipes are independently arranged on the arch ribs which are required to be butted, the two groups of steel pipes with the connection relationship are aligned by the laser alignment aligner. Therefore, the current situation that spot welding butt joint between bracket steel pipes and connecting pieces is needed in the prior art, then the bracket steel pipes are installed in the pre-installed state of an arch rib and spot welded, finally the bracket steel pipes are welded to corresponding positions of the arch rib after the connecting pieces are removed is changed, laser alignment counterpoint instruments are directly installed in two groups of bracket steel pipes which need to be in butt joint, and then alignment and counterpoint are carried out through the laser alignment counterpoint instruments when the corresponding bracket steel pipes are installed to the corresponding positions of the arch rib, namely the butt spot welding of the bracket steel pipes and the connecting pieces is omitted, the subsequent dismantling work is omitted, the purpose that the bracket can be directly pre-installed to the corresponding positions on the arch rib of the steel truss is achieved, the assembly speed is improved, and the assembly quality can be effectively guaranteed.
Correspondingly, according to the process flow, in order to improve the assembly efficiency and reduce auxiliary procedures of a device process, when the bracket steel tube 1 is prepared, intersecting lines of welding connection of the end part and the left arch rib or the right arch rib are cut at the same time, when the steel tube is aligned on the left arch rib or the right arch rib which is qualified to be placed and the cross lines are arranged on the right arch rib by measuring light rays, the four azimuth mark lines of one end of the bracket steel tube 1 cut with the intersecting lines are aligned with the cross lines on the corresponding arch ribs respectively except the coincidence of center points. In combination with the prior art, in order to use the existing standard component as far as possible, the laser alignment instrument 2 is a laser, and the laser is coaxially arranged in the bracket steel tube 1 which is qualified in preparation by measuring light rays through the adjustable simple mounting frame 3. The adjustable simple mounting frame 3 comprises a supporting and fixing rod assembly 4 and a simple adjusting mechanism 5, and the laser alignment aligner 2 is arranged in the bracket steel tube 1 by overlapping measuring light rays and the axial center line of the bracket steel tube 1 through the simple adjusting mechanism 5 under the cooperation of the supporting and fixing rod assembly 4. The supporting and fixing rod assembly 4 comprises three groups of self-supporting and fixing rod groups 6, and each group of self-supporting and fixing rod groups 6 uniformly distributed along the circumferential direction can reciprocate along the length direction and are movably connected with the simple adjusting mechanism 5; the free ends of the set of self-supporting support fixing rod sets 6 which are adjusted in position are supported on the inner side walls of the ends of the bracket steel pipes which need to be installed. Each group of self-supporting fixed rod groups 6 comprises a self-supporting seat 7, supporting connecting rods 8 and movable adjusting pieces 9, the movable adjusting pieces 9 are axially arranged on the supporting connecting rods 8, the supporting connecting rods 8 which are adjusted to be in place through the movable adjusting pieces 9 under the cooperation of the simple adjusting mechanisms 5 are detachably and fixedly connected with the inner side walls of the ends of the bracket steel pipes which need to be installed through the self-supporting seats 7,
furthermore, according to the characteristic that the steel pipe trusses are all made of steel materials, in order to facilitate the arrangement of the laser into the bracket steel pipe 2 through the adjustable simple mounting frame 3, the self-supporting seat 7 is composed of a disc-shaped magnet, the outer side of the disc-shaped magnet is coated with a protective steel shell, and the free end of the supporting connecting rod 8 is fixedly connected with the disc-shaped magnet. At this time, the simple and easy adjusting mechanism 5 of the present application includes a mounting frame 10 and an adaptive simple adjusting component 11, the adaptive simple adjusting component 11 is disposed at the geometric center in the mounting frame 10, the laser alignment aligner 2 is disposed on the adaptive simple adjusting component 11, and the support connecting rod 8 is disposed on the simple adjusting mechanism 5 in a manner of being capable of moving reciprocally along the axial direction by the cooperation of the moving adjusting member 9 and the adaptive simple adjusting component 11 on the mounting frame 10. Correspondingly, the mounting frame 10 comprises a mounting sealing plate 12 and a shell 13, the side wall of the shell 13 is provided with through holes 14 the number of which is equivalent to that of the supporting connecting rods 8, the shell 13 is covered on the mounting sealing plate 12, the self-adaptive simple adjusting assembly 11 is arranged in a mounting cavity formed by the shell 13 and the mounting sealing plate 12 through the mounting sealing plate 12, the laser alignment aligner 2 is arranged at one end part of the self-adaptive simple adjusting assembly 11, which penetrates out of the shell 13 from the end surface, and the supporting connecting rods 8 of which the two ends extend out of the through holes 14 are movably connected with the part of the self-adaptive simple adjusting assembly 11, which is positioned in the mounting cavity, through the movable adjusting piece 9. The self-adaptive simple adjusting assembly 11 at least comprises a set of rolling support bearings 15, a mounting shaft 16 and a pair of adjusting gears 17, wherein the adjusting gears 17 are fixedly arranged on the inner rings of the rolling support bearings 15 through the mounting shaft 16, the rolling support bearings 15 are arranged on the mounting sealing plates 12 through the outer rings, the moving adjusting piece 9 is a group of racks axially arranged on one side face of the support connecting rod 8, the racks of each support connecting rod 8 are respectively engaged with the adjusting gears 17 on the mounting shaft 16 under the matching of the shell 13, and the laser alignment aligner 2 is arranged on one end of the mounting shaft 16 penetrating out of the shell 13 from the end face. Meanwhile, in order to ensure that each group of self-supporting and fixing rod groups 6 is symmetrical as much as possible in terms of weight, and avoid inaccurate position detection caused by weight in use, the three supporting and fixing rod groups 8 of the application comprise a solid rod and two slotted rods, the cross-sectional areas of the two slotted rods are equal to that of the solid rod, slotted holes formed in the two slotted rods are gradually enlarged, three supporting and fixing rods arranged along the circumferential direction are inserted into the slotted rod with relatively smaller slotted holes according to the solid rod, the slotted rod with relatively smaller slotted holes is inserted into the slotted rod with relatively larger slotted holes, the shell passes through the through hole 14, the rolling limit bearing 18 is further arranged at the top of the mounting shaft 16, and the top of the mounting shaft 16 is supported on the end face of the shell 13 through the rolling limit bearing 18.
In summary, compared with the traditional method and the prior art, the simple positioning method provided by the application is mainly used for accurately aligning assembly points by bidirectional aurora, and meanwhile, a circular magnetic attraction device and a synchronous telescopic support rod are adopted, multiple technologies ensure that the device aurora is parallel to the bracket and is positioned in the center of the bracket circular tube, and the simple positioning method is simple and convenient to mount and dismount, easy to use and capable of realizing accurate positioning and mounting of connecting brackets. The connecting pipe and the bracket are pre-spliced and welded and cut again when the bracket is installed in a workshop, so that the driving occupation is reduced, the man-hour occupation, the production mechanical appliance occupation and the auxiliary material consumption are reduced, the effects of improving the production efficiency and saving energy and reducing emission are achieved, a simple and reliable positioning method is provided for the bracket to be installed on site, and the installation quality of the pipe truss is ensured.
The technical scheme of the application is further described by the following specific examples:
in the manufacturing and construction process of the steel structure pipe trusses, most of the connection between each pipe truss adopts a connecting pipe to be in butt joint with the bracket. The bracket assembly is conventionally completed in a workshop generally, but for a large pipe truss, the overall dimension of the large pipe truss often reaches the transportation limit, and the large pipe truss cannot be transported after being installed, so that the bracket can only be assembled on site. The bracket is assembled and positioned in a workshop, the bracket and the connecting pipe are temporarily welded and segmented, the working procedure, the energy consumption and auxiliary materials are increased, the quality of the butt joint groove surface is also affected by segmentation, and the manufacturing safety is affected. The positioning accuracy of the bracket is more difficult to guarantee under the condition that the bracket is assembled on site without workshop assembly equipment. In order to solve the technical problem, a method for installing, positioning and connecting the pipe truss connecting bracket is developed.
The cake-shaped magnetic attraction supporting leg is externally covered with iron shells with the same shape for protection; a strut with a rack; a fixing piece at the top end of the supporting rod; a cylindrical housing having a rectangular hole; two end sealing plates with a laser mounting base and a bearing mounting base; the gear roll shaft is matched with the support rod rack; and a matched bearing.
When the magnetic steel pipe is specifically installed and used, the pipe joint to be installed is firstly placed horizontally, the support rod feet are retracted to a proper length, the support rod is firstly magnetically attracted to the topmost position of the steel pipe, and is extended along the self gravity of the support rod until the other two support legs are magnetically attracted to the inner wall of the steel pipe. This further ensures that the device is positioned on the vertical section of the steel pipe, ensuring that the laser line is parallel to the steel pipe.
Example 1
Hereinafter, the direction in which the rod advances and retreats is referred to as the front and rear of the rod, the side of the rod in contact with the rotor is referred to as the right side of the rod, and the directions of the other two surfaces of the rod are referred to as the up and down directions of the rod.
1. The 3 support rods are combined with 1 rotor to form a combination of 3 support rods which are advanced and retracted in a common mode, so that the advancing and retracting lengths of the three support rods are kept consistent, and the distances from the center point of the device to all directions of the wall of the steel pipe are equal. From the definition of the circle, it can thus be determined that the device is located on a vertical section of the tube. The tooth distance between the upper part of the support rod and the rotor is 0.5-2 mm, the too small tooth distance can cause large forward and backward advancing resistance and slow speed of the support rod, and the too large tooth distance can cause the reduction of precision.
2. The feet of the supporting rod are round cake magnets, and iron shells are coated outside the magnets to prevent collision and damage, so that the supporting rod can be conveniently magnetically attracted on the wall of the steel pipe. The contact point of the discus-shaped magnet and the pipe wall is always 2 points on the pipe wall, and the 2 points are always positioned on the vertical section of the steel pipe, so that the device is further ensured to be positioned on the vertical section of the steel pipe. The size and specification of the 3 cake-shaped magnets are the same.
3. The support rod is vertically and fixedly connected with the round cake-shaped magnet shell surface, and the eccentric distance is equal to the distance from the support rod to the axle center.
4. The 3 supporting rods are staggered up and down symmetrically, so that the rotor is kept balanced up and down when in force transmission, and the eccentric force of up and down is avoided. The first supporting rod passes through the upper and lower centers of the second supporting rod, the second supporting rod passes through the upper and lower centers of the third supporting rod, a gap of 1-2mm is reserved between the first supporting rod and the third supporting rod, and friction influence is avoided between the first supporting rod and the second supporting rod. The cross-sectional areas of the 3 struts are equal, so that the weights of the 3 struts are the same. And one end of the second and third supporting rods is fixed with the magnet shell through an elliptical iron sheet with the thickness of 1-2mm, so that the distance between the second and third supporting rods is fixed.
5. The rotor is divided into a gear and a shaft, is a whole, and is provided with a thread in the middle hollow core for installing the double-head laser. The length of the gear is level with the third supporting rod or slightly exceeds 1-2mm. The diameter and the length of the shaft are matched with the inner diameter of the bearing and are fixedly connected with the inner ring of the bearing.
6. The bearing outer ring is fixed with the fixed cylinder. The bearings on the upper side and the lower side of the rotor are symmetrically arranged.
7. The side fixed cylinder is 1-2mm thick, has better rigidity, and the corresponding 3 branch positions are opened and are had the rectangular hole with branch cross-section size assorted, and the hole size has 3mm clearance more than branch. A small roll shaft with the diameter of 3mm is arranged on the upper side and the lower side of the opening, and the small roll shaft is used for clamping the supporting rod from the upper surface and the lower surface and the surface without the rack 3 without obstructing the advance and retreat of the supporting rod.
8. The center of the rotor is hollow, and the inner side of the rotor is provided with threads for installing the double-head laser. The whole rotor and the fixed cylinder are kept vertical to the supporting rods in space, so that the aurora is vertical to the plane determined by 3 supporting rods after the laser is installed.
9. When the magnetic force type support rod is used, the pipe joint to be installed is placed horizontally, the support rod feet are retracted to a proper length, the topmost part of the steel pipe is magnetically attracted, the support rod is elongated along the self weight of the magnetic force type support rod, and the other two support legs are magnetically attracted to the inner wall of the steel pipe. This further ensures that the device is positioned on the vertical section of the steel pipe, ensuring that the laser line is parallel to the steel pipe.
Claims (10)
1. A simple positioning method for installing a steel pipe arch truss arch rib bracket comprises arch rib preparation and bracket steel pipe preparation, and is characterized in that: the simple positioning method comprises the steps of firstly installing a laser alignment aligner (2) in a qualified bracket steel pipe (1), enabling measuring light rays of the laser alignment aligner (2) to coincide with the axial center line of the bracket steel pipe (1), then aligning Ji Shiqian on a left arch rib or a right arch rib marked by the left arch rib or the right arch rib through measuring light rays emitted by the laser alignment aligner (2), and finally positioning and welding the bracket steel pipe (1) on the left arch rib or the right arch rib to finish positioning and installing work of the bracket steel pipe (1).
2. The easy positioning method for installing a steel pipe arch truss rib bracket according to claim 1, wherein the easy positioning method comprises the following steps: when the bracket steel tube (1) is prepared, intersecting lines with the ends welded with the left arch rib or the right arch rib are cut at the same time, and when the alignment steel tube is aligned on the left arch rib or the right arch rib which is qualified to be placed by measuring light rays, the four azimuth mark lines of one end of the bracket steel tube (1) cut with the intersecting lines are aligned with the cross lines on the corresponding arch ribs at the same time except for the coincidence of center points.
3. The easy positioning method for installing arch rib brackets of steel tube arch truss according to claim 1 or 2, wherein the easy positioning method comprises the following steps: the laser alignment aligner (2) is a laser, and the laser is coaxially arranged in the bracket steel tube (1) qualified in preparation by measuring light rays through the adjustable simple mounting frame (3).
4. A simple positioning method for installing a steel pipe arch truss rib bracket according to claim 3, wherein: the adjustable simple mounting frame (3) comprises a supporting fixing rod assembly (4) and a simple adjusting mechanism (5), and the laser alignment aligner (2) is arranged in the bracket steel tube (1) by the simple adjusting mechanism (5) under the cooperation of the supporting fixing rod assembly (4) in a manner that the axial center line of the measuring light and the bracket steel tube (1) coincide.
5. The method for easy positioning for installing steel tube arch truss rib brackets according to claim 4, wherein the method comprises the following steps: the supporting and fixing rod assembly (4) comprises three groups of self-supporting and fixing rod groups (6), and each group of self-supporting and fixing rod groups (6) uniformly distributed along the circumferential direction can reciprocate along the length direction and are movably connected with the simple adjusting mechanism (5); the free ends of the self-holding supporting and fixing rod groups (6) which are adjusted to be in position are supported on the inner side walls of the ends of the bracket steel pipes which need to be installed.
6. The method for easy positioning for installing steel tube arch truss rib brackets according to claim 5, wherein the method comprises the following steps: each group of self-supporting fixed rod groups (6) comprises a self-supporting seat (7), a supporting connecting rod (8) and a movable adjusting piece (9), wherein the movable adjusting piece (9) is axially arranged on the supporting connecting rod (8), the supporting connecting rod (8) which is in place is adjusted by the movable adjusting piece (9) under the cooperation of the simple adjusting mechanism (5) and is detachably and fixedly connected with the inner side wall of the end part of the bracket steel tube to be installed through the self-supporting seat (7),
the self-holding supporting seat (7) is composed of a disc-shaped magnet, a protective steel shell is coated on the outer side of the disc-shaped magnet, and the free end of the supporting connecting rod (8) is fixedly connected with the disc-shaped magnet.
7. The easy positioning method for installing a steel pipe arch truss rib bracket according to claim 6, wherein: simple and easy adjustment mechanism (5) are including mounting bracket (10) and the simple and easy adjustment subassembly of self-adaptation (11), and geometric center department in mounting bracket (10) is arranged in simple and easy adjustment subassembly of self-adaptation (11), and laser alignment counterpoint appearance (2) are arranged on simple and easy adjustment subassembly of self-adaptation (11), and support connecting rod (8) are through removing adjusting part (9) and simple and easy adjustment subassembly of self-adaptation (11) and follow axial reciprocating motion's arrangement on simple and easy adjustment mechanism (5) at the cooperation of mounting bracket (10).
8. The easy positioning method for installing steel pipe arch truss rib brackets according to claim 7, wherein: the mounting frame (10) comprises mounting sealing plates (12) and a shell (13), the side wall of the shell (13) is provided with a plurality of through holes (14) corresponding to the supporting connecting rods (8), the shell (13) is covered on the mounting sealing plates (12), the self-adaptive simple adjusting assembly (11) is arranged in a mounting cavity formed by the shell (13) and the mounting sealing plates (12) through the mounting sealing plates (12), the laser alignment instrument (2) is arranged on one end part of the self-adaptive simple adjusting assembly (11) penetrating out of the shell (13) from the end surface, and the two ends of the supporting connecting rods (8) extending out of the through holes (14) are movably connected with the part of the self-adaptive simple adjusting assembly (11) located in the mounting cavity through moving adjusting pieces (9).
9. The easy positioning method for installing a rib bracket of a steel pipe arch truss according to claim 8, wherein the easy positioning method comprises the following steps: the self-adaptive simple adjusting assembly (11) at least comprises a set of rolling support bearing (15), an installation shaft (16) and a pair of adjusting gears (17), the adjusting gears (17) are fixedly arranged on the inner ring of the rolling support bearing (15) through the installation shaft (16), the rolling support bearing (15) is arranged on the installation sealing plate (12) through the outer ring, the movable adjusting piece (9) is a group of racks which are axially arranged on one side face of the support connecting rod (8), and the racks of the support connecting rods (8) are respectively meshed with the adjusting gears (17) on the installation shaft (16) under the matching of the shell (13) at the same time, and the laser alignment instrument (2) is arranged on one end of the installation shaft (16) penetrating out of the shell (13) from the end face.
10. The easy positioning method for installing steel tube arch truss rib brackets according to claim 9, wherein: the three support connecting rods (8) comprise a solid rod and two slotting rods, the cross-sectional areas of the two slotting rods are equal to that of the solid rod, the slotted holes formed in the two slotting rods are gradually enlarged, the three support connecting rods arranged along the circumferential direction are inserted into the slotting rod with the relatively smaller slotted holes according to the solid rod, the slotting rod with the relatively smaller slotted holes is inserted into the slotted holes, the slotting rod with the relatively larger slotted holes passes through the shell from the passing hole (14),
a rolling limit bearing (18) is further arranged at the top of the mounting shaft (16), and the top of the mounting shaft (16) is supported on the end face of the shell (13) through the rolling limit bearing (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310838794.8A CN116638246A (en) | 2023-07-10 | 2023-07-10 | Simple positioning method for installing steel pipe arch truss arch rib bracket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310838794.8A CN116638246A (en) | 2023-07-10 | 2023-07-10 | Simple positioning method for installing steel pipe arch truss arch rib bracket |
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| CN116638246A true CN116638246A (en) | 2023-08-25 |
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|---|---|---|---|
| CN202310838794.8A Pending CN116638246A (en) | 2023-07-10 | 2023-07-10 | Simple positioning method for installing steel pipe arch truss arch rib bracket |
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| Country | Link |
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| CN (1) | CN116638246A (en) |
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- 2023-07-10 CN CN202310838794.8A patent/CN116638246A/en active Pending
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