CN114263270A - Spatial grid ultra-large span bolt ball assembly based on bolt ball - Google Patents
Spatial grid ultra-large span bolt ball assembly based on bolt ball Download PDFInfo
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- CN114263270A CN114263270A CN202111588424.0A CN202111588424A CN114263270A CN 114263270 A CN114263270 A CN 114263270A CN 202111588424 A CN202111588424 A CN 202111588424A CN 114263270 A CN114263270 A CN 114263270A
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Abstract
The invention relates to the technical field of space net racks, in particular to a space grid ultra-large span bolt ball assembly based on bolt balls, wherein the surfaces of the bolt balls are provided with tangent planes, sleeves are arranged on the outer sides of the tangent planes, steel pipes are arranged on the outer sides of the sleeves, the steel pipes are fixedly connected with the bolt balls through high-strength bolts, the high-strength bolts penetrate through the sleeves, the high-strength bolts are fixedly connected with the sleeves through fastening screws, threaded holes are formed in the positions, corresponding to the high-strength bolts, of the surfaces of the tangent planes of the bolt balls and the positions, corresponding to the fastening screws, of the surfaces of the sleeves, and the front ends of the steel pipes are provided with conical heads or sealing plates, the invention provides a space grid assembly which can solve the problems of design, processing, production and installation of a space structure net rack in China and in the world, and can greatly promote the large development of the space structure net rack industry, the bottleneck problem of super-large span is solved, and the industrial milestone significance is achieved.
Description
Technical Field
The invention relates to the technical field of space net racks, in particular to a spatial grid ultra-large span bolt ball assembly based on bolt balls.
Background
The space truss structure is a reticular space rod system structure which is formed by a plurality of rod pieces through nodes according to a certain rule, can be divided into a flat plate truss and a curved surface truss according to the appearance, is widely applied to various industrial and civil building structures, and particularly belongs to the steel structure industry pillar industry at home in large-span gymnasiums, public large-scale gymnasiums and environment-friendly closed dry coal sheds.
The space truss structure is a space rod system structure, has the characteristic of three-dimensional stress, can bear the action in all directions, is generally a high-order hyperstatic structure, and can be readjusted by internal force only once hyperstatic times if one rod is partially failed, so that the whole structure is generally not failed, and has higher safety reserve; the rods intersected in the air are both stressed rods and supporting rods, and are mutually supported and cooperatively work during working, so that the integrated combined type vibration damping device has the advantages of good integrity, good stability and large space rigidity, can effectively bear asymmetric load, concentrated load and dynamic load, and has better vibration damping performance; meanwhile, under the action of node load, each rod piece mainly bears axial tension and pressure, so that the strength of the material can be fully exerted, and steel is saved; the grid structure combination is regular, a large number of nodes and rod pieces have the same shape and size, the rod pieces and the nodes have fewer specifications, the production is convenient, the product quality is high, the field assembly is easy, and the construction speed can be improved; the large-span structure is built by utilizing the rod pieces with smaller specifications, the occupied space of the structure is smaller, and the space can be effectively utilized.
At present, the largest matched bolt of the domestic bolt ball net rack node component is M85, the span of the engineering project related to the standard can only reach about 150 meters, and when the span is exceeded, a welded ball or a pipe truss frame needs to be superposed, so that a series of inconveniences are brought to the processing, the production and the installation, and the construction cost is increased.
Disclosure of Invention
The invention aims to provide a spatial grid ultra-large span bolt ball assembly based on bolt balls, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
space net super large span bolt ball subassembly based on bolt ball, including the bolt ball, the surface of bolt ball all is provided with the tangent plane, the outside of tangent plane is provided with the sleeve, telescopic outside is provided with the steel pipe, the steel pipe passes through high strength bolt and bolt ball fixed connection, high strength bolt runs through in telescopic inside, high strength bolt passes through fastening screw and sleeve fixed connection.
Preferably, the section surface of the bolt ball and the position corresponding to the high-strength bolt and the surface of the sleeve and the position corresponding to the fastening screw are provided with threaded holes.
Preferably, the front end of the steel pipe is provided with a conical head or a sealing plate.
Preferably, the surface of the high-strength bolt is provided with a groove at a position corresponding to the fastening screw.
Preferably, the high-strength bolt has the size of M100, M120, M130, M150 and M165 manufactured by GB.
Preferably, the bolt ball and the sleeve are both made of No. 45 steel materials.
Preferably, the high-strength bolt is made of 40Cr or 42CrMo materials.
Preferably, the conical head and the sealing plate are both made of 355B materials.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the component data is embedded in software related to Zhejiang MSTCAD, Beijing cloud SFCAD and Tongji 3D3SCAD to establish a large-span space grid model, the stress analysis and calculation of typical rod pieces of bolts of various specifications and the analysis and calculation of equal-strength tensile strength and sleeve compression resistance stress of bolts of corresponding specifications are carried out to realize the design of the bolt ball component, the performance test is carried out on the bolt ball component, the test results meet the design requirements, the design requirements of bolt ball grid frames of 200 and 600 meters in China and abroad can be solved, the condition that welding balls or pipe trusses need to be overlapped after the upper limit of the existing 150-meter structure is avoided, the installation difficulty and the construction cost are reduced, the large development of the industry of the space structure grid frame can be greatly promoted, the bottleneck problem of the ultra-large span is solved, and the industry milestone significance is achieved.
Drawings
FIG. 1 is an axial view of a bolted ball based spatial grid ultra-large span bolted ball assembly of the present invention;
FIG. 2 is a cross-sectional view of a bolted ball based spatial grid ultra-large span bolted ball assembly of the present invention;
FIG. 3 is an exploded view of a bolted ball based spatial grid ultra-large span bolted ball assembly of the present invention;
FIG. 4 is a hemispherical spatial grid of a bolted ball based spatial grid ultra-large span bolted ball assembly of the present invention;
FIG. 5 is a stress analysis calculation diagram of a typical rod MSTCAD of a high-strength bolt M100 of a spatial grid ultra-large span bolt-ball assembly based on a bolt ball;
FIG. 6 is a force analysis calculation chart of a high-strength bolt M100 equal-strength tensile and sleeve compression resistant MSTCAD of the spatial grid ultra-large span bolt-ball assembly based on the bolt ball;
FIG. 7 is a stress analysis calculation diagram of a typical rod MSTCAD of a high-strength bolt M120 of a spatial grid ultra-large span bolt-ball assembly based on a bolt ball;
FIG. 8 is a stress analysis calculation chart of a high-strength bolt M120 equal-strength tensile and sleeve compression resistant MSTCAD of the spatial grid ultra-large span bolt-ball assembly based on the bolt ball;
FIG. 9 is a stress analysis calculation diagram of a typical rod MSTCAD of a high-strength bolt M130 of a spatial grid ultra-large span bolt-ball assembly based on bolt balls;
FIG. 10 is a force analysis calculation chart of a high-strength bolt M130 with equal strength tensile strength and sleeve compression resistance MSTCAD of the spatial grid super-large span bolt-ball assembly based on the bolt ball;
FIG. 11 is a stress analysis calculation diagram of a typical rod MSTCAD of a high-strength bolt M150 of a spatial grid ultra-large span bolt-ball assembly based on bolt balls;
FIG. 12 is a force analysis calculation chart of a high-strength bolt M150 equal-strength tensile and sleeve compression resistant MSTCAD of the spatial grid super-large span bolt-ball assembly based on the bolt ball;
FIG. 13 is a stress analysis calculation diagram of a typical rod MSTCAD of a high-strength bolt M165 of a spatial grid ultra-large span bolt-ball assembly based on a bolt ball according to the invention;
FIG. 14 is a force analysis calculation chart of a high-strength bolt M165 equal-strength tensile and sleeve compression MSTCAD of the spatial grid super-large span bolt-ball assembly based on the bolt ball;
FIG. 15 is a table of high strength bolt specifications for a spatial grid ultra large span bolt ball assembly of the present invention based on bolt balls;
FIG. 16 is a table of high strength bolt performance grade and materials for a spatial grid very large span bolted ball assembly based on bolted balls according to the present invention;
FIG. 17 is a mechanical property table of a material test piece of the spatial grid ultra-large span bolt ball assembly based on the bolt ball of the invention;
FIG. 18 is a high-strength bolt physical mechanical property table of the spatial grid ultra-large span bolt ball assembly based on the bolt ball of the invention;
FIG. 19 is a sample drawing of the specification and dimensions of the sleeve of the spatial grid ultra-large span bolted ball assembly based on bolted balls of the present invention;
FIG. 20 is a table of the specifications of the sleeves of the spatial grid very large span bolted ball assembly based on bolted balls of the present invention;
fig. 21 is a table showing the bottom thickness of the sealing plate or the conical head of the spatial grid ultra-large span bolt-ball assembly based on the bolt ball and the length of the high-strength bolt screwed into the ball.
FIG. 22 is a sample drawing of the specification and size of the cone head of the spatial grid ultra-large span bolted ball assembly based on bolted balls according to the invention;
FIG. 23 is a table of dimensions of the cone head of the bolted ball based spatial grid ultra large span bolted ball assembly of the present invention.
In the figure: 1. a bolt ball; 2. cutting into noodles; 3. a sleeve; 4. a steel pipe; 5. a high-strength bolt; 6. fastening screws; 7. a conical head; 8. closing the plate; 9. and (4) a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-23, the present invention provides a technical solution:
a space grid ultra-large span bolt ball assembly based on a bolt ball is shown in figures 1-3 and comprises a bolt ball 1, wherein tangent planes 2 are arranged on the surface of the bolt ball 1, sleeves 3 are arranged on the outer sides of the tangent planes 2, steel pipes 4 are arranged on the outer sides of the sleeves 3, the steel pipes 4 are fixedly connected with the bolt ball 1 through high-strength bolts 5, the high-strength bolts 5 penetrate through the sleeves 3, the high-strength bolts 5 are fixedly connected with the sleeves 3 through fastening screws 6, threaded holes are formed in the surfaces of the tangent planes 2 of the bolt ball 1 and the positions corresponding to the high-strength bolts 5 and the surfaces of the sleeves 3 and the positions corresponding to the fastening screws 6, the bolt ball and the steel pipes are connected with each other through the sleeves matched with the high-strength bolts, and the space grid is built, and the hemispherical space grid is shown in figure 4.
In this embodiment, referring to fig. 2, the front end of the steel pipe 4 is provided with a conical head 7 or a sealing plate 8, so as to meet the actual connection requirement.
In this embodiment, referring to fig. 2, a groove 9 is formed in a position on the surface of the high-strength bolt 5 corresponding to the fastening screw 6, so that the fastening bolt is fixed and limited, the structural strength is enhanced, and the structural stability is ensured.
In this embodiment, the high-strength bolt 5 has the size of M100, M120, M130, M150 and M165 manufactured by GB, and meets the design and construction requirements of 200-300M bolt ball net racks at home and abroad.
In this embodiment, the bolt ball 1 and the sleeve 3 are made of 45 # steel material, the high-strength bolt 5 is made of 40Cr or 42CrMo material, and the conical head 7 and the seal plate 8 are made of 355B material, so as to ensure the structural strength of each component.
Please refer to fig. 5-14, which are the stress analysis and calculation graphs of the built-in Zheda MSTCAD software of the typical rod of the adaptive steel pipe 4 with the high-strength bolts 5 of each specification and the built-in Zheda MSTCAD software of the equal-strength tensile adaptive sleeve with the high-strength bolts 5 of each specification.
Please refer to fig. 15, which is a table of the dimensional parameters of the high-strength bolts 5 of each specification.
Please refer to fig. 16, which is a table of performance grade and material parameter of the high-strength bolt 5 of each specification.
Referring to fig. 17, which is a table of parameters for specifying mechanical properties of material test pieces, after heat treatment (the process is the same as that of a bolt object) of the material in the present application, tensile test pieces were prepared according to the specification of GB/T2281, and tensile tests were performed, and the results were all in accordance with the specification in the table.
Please refer to fig. 18, which is a table of the mechanical performance parameters of the high-strength bolts 5 of various specifications.
Please refer to fig. 19, which is a table of specification and dimension parameters of the adaptive socket 3 for each specification of the high-strength bolt 5
Please refer to fig. 20, which is a table showing the bottom thickness of the sealing plate 8 or the conical head 7, the length parameter of the high strength bolt 5 screwed into the bolt ball 1, and the pipe diameter of the adaptive steel pipe 4.
Example 1
The high-strength bolt 5 is M100, the bolt ball 1 is R175, the sleeve 3 is M130 and s170, the thickness of the conical head 7/the sealing plate 8 is 70mm, and the adaptive steel pipe 4 is phi 325.
Example 2
The high-strength bolt 5 adopts M100, the bolt ball 1 adopts R175, the sleeve 3 adopts M130 and s170, the thickness of the conical head 7/the seal plate 8 adopts 70mm, and the adaptive steel pipe 4 is phi 351.
Example 3
The high-strength bolt 5 adopts M100, the bolt ball 1 adopts R175, the sleeve 3 adopts M130 and s170, the thickness of the conical head 7/the seal plate 8 adopts 70mm, and the adaptive steel pipe 4 is phi 377.
Example 4
The high-strength bolt 5 is M100, the bolt ball 1 is R175, the sleeve 3 is M130 and s170, the thickness of the conical head 7/the seal plate 8 is 70mm, and the adaptive steel pipe 4 is phi 402.
Example 5
The high-strength bolt 5 is M120, the bolt ball 1 is R175, the sleeve 3 is M130 and s200, the thickness of the conical head 7/the sealing plate 8 is 70mm, and the adaptive steel pipe 4 is phi 351.
Example 6
The high-strength bolt 5 is M120, the bolt ball 1 is R200, the sleeve 3 is M130 and s200, the thickness of the conical head 7/the seal plate 8 is 70mm, and the adaptive steel pipe 4 is phi 351.
Example 7
The high-strength bolt 5 is M120, the bolt ball 1 is R200, the sleeve 3 is M130 and s190, the thickness of the conical head 7/the seal plate 8 is 70mm, and the adaptive steel pipe 4 is phi 377.
Example 8
The high-strength bolt 5 is M120, the bolt ball 1 is R200, the sleeve 3 is M130 and s190, the thickness of the conical head 7/the seal plate 8 is 70mm, and the adaptive steel pipe 4 is phi 402.
Example 9
The high-strength bolt 5 is M130, the bolt ball 1 is R200, the sleeve 3 is M130 and s200, the thickness of the conical head 7/the sealing plate 8 is 70mm, and the adaptive steel pipe 4 is phi 351.
Example 10
The high-strength bolt 5 is M130, the bolt ball 1 is R200, the sleeve 3 is M130 and s200, the thickness of the conical head 7/the seal plate 8 is 70mm, and the adaptive steel pipe 4 is phi 377.
Example 11
The high-strength bolt 5 is M130, the bolt ball 1 is R200, the sleeve 3 is M130 and s200, the thickness of the conical head 7/the seal plate 8 is 70mm, and the adaptive steel pipe 4 is phi 402.
Example 12
The high-strength bolt 5 is M130, the bolt ball 1 is R200, the sleeve 3 is M130 and s200, the thickness of the conical head 7/the seal plate 8 is 70mm, and the adaptive steel pipe 4 is phi 426.
Example 13
The high-strength bolt 5 is M150, the bolt ball 1 is R225, the sleeve 3 is M150 and s220, the thickness of the conical head 7/the sealing plate 8 is 80mm, and the adaptive steel pipe 4 is phi 402.
Example 14
The high-strength bolt 5 is M150, the bolt ball 1 is R225, the sleeve 3 is M150 and s220, the thickness of the conical head 7/the sealing plate 8 is 80mm, and the adaptive steel pipe 4 is phi 426.
Example 15
The high-strength bolt 5 is M150, the bolt ball 1 is R225, the sleeve 3 is M150 and s220, the thickness of the conical head 7/the sealing plate 8 is 80mm, and the adaptive steel pipe 4 is phi 450.
Example 16
The high-strength bolt 5 is M150, the bolt ball 1 is R225, the sleeve 3 is M150 and s220, the thickness of the conical head 7/the sealing plate 8 is 80mm, and the adaptive steel pipe 4 is phi 480.
Example 17
The high-strength bolt 5 is M165, the bolt ball 1 is R250, the sleeve 3 is M150 and s240, the thickness of the conical head 7/the sealing plate 8 is 80mm, and the adaptive steel pipe 4 is phi 426.
Example 18
The high-strength bolt 5 is M165, the bolt ball 1 is R250, the sleeve 3 is M150 and s240, the thickness of the conical head 7/the sealing plate 8 is 80mm, and the adaptive steel pipe 4 is phi 450.
Example 19
The high-strength bolt 5 is M165, the bolt ball 1 is R250, the sleeve 3 is M150 and s240, the thickness of the conical head 7/the sealing plate 8 is 80mm, and the adaptive steel pipe 4 is phi 480.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Spatial grid super large span bolt ball subassembly based on bolt ball includes bolt ball (1), its characterized in that: the bolt is characterized in that a tangent plane (2) is arranged on the surface of the bolt ball (1), a sleeve (3) is arranged on the outer side of the tangent plane (2), a steel pipe (4) is arranged on the outer side of the sleeve (3), the steel pipe (4) is fixedly connected with the bolt ball (1) through a high-strength bolt (5), the high-strength bolt (5) penetrates through the inside of the sleeve (3), and the high-strength bolt (5) is fixedly connected with the sleeve (3) through a fastening screw (6).
2. The bolted ball based spatial grid very large span bolted ball assembly of claim 1, characterized in that: threaded holes are formed in the surfaces of the tangent plane (2) of the bolt ball (1) and the positions corresponding to the high-strength bolt (5) and the surfaces of the sleeves (3) and the positions corresponding to the fastening screws (6).
3. The bolted ball based spatial grid very large span bolted ball assembly of claim 1, characterized in that: the front end of the steel pipe (4) is provided with a conical head (7) or a sealing plate (8).
4. The bolted ball based spatial grid very large span bolted ball assembly of claim 1, characterized in that: and a groove (9) is formed in the surface of the high-strength bolt (5) and in the position corresponding to the fastening screw (6).
5. The bolted ball based spatial grid very large span bolted ball assembly of claim 1, characterized in that: the high-strength bolt (5) is made of GB M100, M120, M130, M150 and M165.
6. The bolted ball based spatial grid very large span bolted ball assembly of claim 1, characterized in that: the bolt ball (1) and the sleeve (3) are both made of No. 45 steel materials.
7. The bolted ball based spatial grid very large span bolted ball assembly of claim 1, characterized in that: the high-strength bolt (5) is made of 40Cr or 42CrMo materials.
8. The bolted-ball based spatial grid very large span bolted ball assembly of claim 3, characterized in that: the conical head (7) and the sealing plate (8) are both made of 355B materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111588424.0A CN114263270A (en) | 2021-12-23 | 2021-12-23 | Spatial grid ultra-large span bolt ball assembly based on bolt ball |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111588424.0A CN114263270A (en) | 2021-12-23 | 2021-12-23 | Spatial grid ultra-large span bolt ball assembly based on bolt ball |
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| CN114263270A true CN114263270A (en) | 2022-04-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492259A (en) * | 2022-10-10 | 2022-12-20 | 无锡周博建筑设计有限公司 | Cyclic assembly type steel pipe net rack node |
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2021
- 2021-12-23 CN CN202111588424.0A patent/CN114263270A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492259A (en) * | 2022-10-10 | 2022-12-20 | 无锡周博建筑设计有限公司 | Cyclic assembly type steel pipe net rack node |
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