CN112252805A - YT type cross section sectional material and transmission tower or emergency repair tower adopting same - Google Patents
YT type cross section sectional material and transmission tower or emergency repair tower adopting same Download PDFInfo
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- CN112252805A CN112252805A CN202011030647.0A CN202011030647A CN112252805A CN 112252805 A CN112252805 A CN 112252805A CN 202011030647 A CN202011030647 A CN 202011030647A CN 112252805 A CN112252805 A CN 112252805A
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- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
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Abstract
The invention provides a YT-shaped section bar and a transmission tower or an emergency repair tower adopting the YT-shaped section bar, which comprises: the anti-falling self-locking device comprises a main limb (1), a web plate (2) and a wing plate (3), wherein the web plate (2) and the wing plate (3) are of plate-shaped structures, the cross section of the main limb (1) is of an arc-shaped or right-angle structure, any point or right-angle vertex on the arc of the main limb (1) is fixed with the web plate (2) to form a Y-shaped section, the web plate (2) and the wing plate (3) are fixed to form a T-shaped section to participate in axial tension and compression bearing of a component, and the wing plate (3) is connected with an anti-falling self-locking device or a construction holding pole; through increasing T type device, improved the minimum axle radius of gyration of cross-section and cross-section around the weak axis bearing capacity, still through T type device, can directly install the track or the workman equipment of climbing the tower of preventing falling self-locking ware or holding pole on T type device, reduced component weight, simplified the structure, improved material utilization and security, realized the multi-functional design of structure.
Description
Technical Field
The invention relates to a section bar, in particular to a YT-shaped section bar and a transmission tower or an emergency repair tower adopting the YT-shaped section bar.
Background
The power transmission line iron tower is divided into an angle steel tower and a steel pipe tower according to the section type of a main material component, wherein the angle steel tower adopts a section with an equal-corner section, the application history is longest, the range is widest, and the width of the largest-size angle steel limb reaches 300mm at present. The main materials of the steel tube tower are connected by steel tubes and flanges, and the steel tube tower is mainly used in a large span tower or a line with a same extra-high voltage alternating current tower and double loops. The equilateral angle steel or steel pipe is used as a main stressed member of the power transmission tower, particularly a main material, and is usually controlled by pressure. The section of the angle steel and the section of the steel pipe are combined with the figure 1 and the figure 2. The metal member is widely applied to a plurality of steel structures such as a power transmission line iron tower, a building structure, a bridge, a communication tower and the like as a common stressed member. When a component is stressed, the design calculation of the component is usually governed by stability, i.e. the component failure manifests itself as an overall bending instability, the load bearing capacity of which is determined by the stability conditions. The actual bearing capacity of the axial compression member is directly related to the sectional form. With reference to fig. 1, the maximum axis of the turning radius of the bending-resistant section of the angle steel is an axis x0-x0, the minimum axis of the turning radius of the bending-resistant section of the angle steel is an axis y0-y0, the two mutually perpendicular main axes directly influence the axial pressure bearing performance of the section, the angle steel member calculates the pressure bearing capacity, and the calculation is carried out according to the turning radius of the minimum axis y0-y 0. Referring to fig. 2, the circle section is symmetrical, and the radius of gyration of all the main shafts is the same.
The anti-falling device mainly comprises three parts, namely a self-locking device, a rope, a rail and a rope, wherein the self-locking device is connected with a worker and used for locking and braking the worker with the rail to prevent the worker from falling when the worker has an accident; the rail is matched with the self-locking device to lock falling personnel; and the connecting plate and the bolt are used for installing and fixing the rail on the main material of the iron tower. The installation of the anti-falling guide rail increases the additional structure of the tower material and does not participate in the stress of the iron tower.
The existing angle steel main material structure has three places which need to be improved and optimized, firstly, the section attribute of the angle steel is different, the turning radius of a maximum shaft and a minimum shaft is different, the design calculation can be carried out only according to the minimum shaft, and the materials cannot be fully utilized; secondly, the anti-falling device is installed, the cost is high, the installation is complex, certain potential safety hazard exists, and related structures are only used for preventing personnel from falling and do not participate in the bearing stress of the iron tower; thirdly, small materials need to be lifted, workers climb the tower during construction, and small holding poles for lifting heavy objects and positions or rails where worker climbing equipment is not installed and fixed are arranged.
Disclosure of Invention
Aiming at the problems that materials in the prior art cannot be fully utilized or an anti-falling track is installed, the cost is high, the installation is complex, and certain potential safety hazards exist, the invention provides a YT-type section bar which comprises the following components:
a main limb (1), a web plate (2) and a wing plate (3);
the web plate (2) and the wing plate (3) are of plate-shaped structures;
the cross section of the main limb (1) is of an arc or right-angle structure, and any point or right-angle vertex on the arc of the main limb (1) is fixed with the web plate (2) to form a Y-shaped section;
the web (2) and the wing plate (3) are fixed to form a T-shaped section and participate in axial tension and compression bearing of the member;
the wing plate (3) is connected with a falling-proof self-locking device or a construction holding pole or a climbing tower device.
Preferably, the main limb (1) and the web plate (2) as well as the web plate (2) and the wing plate (3) are welded or integrally formed;
wherein the integrally forming comprises extruding, hot rolling, cold rolling or pultrusion.
Preferably, the web (2) is connected to the wing (3) at a midline position.
Preferably, the thickness of the side, connected with the web plate (2), of the wing plate (3) is gradually thickened from two ends of the wing plate (3) to the connection part with the web plate (2);
the other side of the wing plate (3) connected with the web plate (2) is a plane;
the anti-falling self-locking device or the construction holding pole or the tower climbing equipment is sheathed and buckled on the wing plate (3).
Preferably, the radius of gyration of the YT-shaped section bar around the section symmetry axis is equal to or close to the radius of gyration vertical to the symmetry axis.
Preferably, both sides of the main limb (1) and the web plate (2) are provided with included angles.
Preferably, when the cross section of the main limb (1) is of an arc structure, the main limb (1) is in a straight tube shape, and the axis of the main limb (1) is parallel to the wing plate (3).
Preferably, the two ends of the main limb (1) are arranged in a set proportion.
Based on the same inventive concept, the invention also provides a transmission tower, which comprises a plurality of supporting legs, main materials and cross arms, wherein the supporting legs, the main materials and the cross arms adopt the YT section profiles.
Based on the same inventive concept, the invention also provides a power transmission first-aid repair tower which comprises a plurality of tower sections, wherein the main material of each tower section adopts the YT section profile.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a YT-type section bar, which comprises: the anti-falling self-locking device comprises a main limb (1), a web plate (2) and a wing plate (3), wherein the web plate (2) and the wing plate (3) are of plate-shaped structures, the cross section of the main limb (1) is of an arc-shaped or right-angle structure, any point or right-angle vertex on the arc of the main limb (1) is fixed with the web plate (2) to form a Y-shaped section, the web plate (2) and the wing plate (3) are fixed to form a T-shaped section to participate in axial tension and compression bearing of a component, and the wing plate (3) is connected with an anti-falling self-locking device or a construction holding pole; according to the invention, the T-shaped device is added on the body, so that the turning radiuses of the maximum shaft and the minimum shaft are the same, materials are fully utilized, and the cost is reduced.
2. The T-shaped device is additionally arranged on the body, so that the minimum axial turning radius of the section and the bearing capacity of the section around the weak axis are improved, and the anti-falling self-locking device can be directly arranged on the T-shaped device through the T-shaped device, so that the weight of components is reduced, the structure is simplified, and the material utilization rate and the safety are improved.
3. According to the invention, by changing the structure of the supporting leg of the transmission tower, the bearing capacity of the transmission tower is effectively enhanced, the structure is more stable, and the safety of constructors is ensured.
Drawings
FIG. 1 is a schematic cross-sectional structure view of a main material of an angle steel;
FIG. 2 is a schematic cross-sectional view of a steel pipe;
FIG. 3 is a schematic view of the YT-type sharp-angled section bar structure of the present invention;
FIG. 4 is a schematic structural view of a YT-type rounded section profile of the present invention;
FIG. 5 is a schematic view of the Y-shaped and T-shaped portions and a schematic view of a cross-sectional spindle structure shown in FIG. 3;
FIG. 6 shows the T-shaped rail positively coupled to the tower;
FIG. 7 shows the T-shaped guide rail and the tower body connected in reverse;
fig. 8 shows the T-shaped rail attached to the crank arm.
Detailed Description
Example 1
With reference to fig. 3 and 4, the present invention provides a YT-type section bar, comprising:
main limbs 1, webs 2 and wing plates 3;
the web 2 and the wing plate 3 are of plate-shaped structures;
the cross section of the main limb 1 is of an arc or right-angle structure, and any point or right-angle vertex on the arc of the main limb 1 and the web 2 are fixed to form a Y-shaped section;
the web 2 and the wing plate 3 are fixed to form a T-shaped section and participate in the axial tension and compression bearing of the member;
the wing plate 3 is connected with a falling-proof self-locking device or a construction holding pole or a climbing tower device.
The main limb 1 and the web plate 2 as well as the web plate 2 and the wing plate 3 are welded or integrally formed;
wherein integrally forming comprises extruding, hot rolling, cold rolling or pultrusion.
The web 2 is attached to the wing 3 at a mid-line position.
The thickness of one side of the wing plate 3 connected with the web plate 2 is gradually thickened from the two ends of the wing plate 3 to the connection part with the web plate 2;
the other side of the wing plate 3 connected with the web plate 2 is a plane;
the anti-falling self-locking device or the construction holding pole or the tower climbing equipment is sheathed and buckled on the wing plate 3.
The radius of gyration of the YT-shaped section bar around the section symmetry axis is equal to or close to the radius of gyration vertical to the symmetry axis.
Both sides of the main limb 1 and the web 2 are provided with included angles.
When the cross section of the main limb 1 is of an arc structure, the main limb 1 is in a straight pipe shape, and the axis of the main limb 1 is parallel to the wing plate 3.
The two ends of the main limb 1 are arranged in a set proportion.
Based on the same invention concept, the invention also provides a transmission tower which comprises a plurality of supporting legs, main materials and cross arms, wherein YT section profiles are adopted by the supporting legs, the main materials and the cross arms.
Based on the same inventive concept, the invention also provides a power transmission first-aid repair tower which comprises a plurality of tower sections, wherein YT section profiles are adopted as main materials of the tower sections.
Example 2
The YT-shaped section for the main material of the power transmission tower, disclosed by the invention, is combined with a figure 3, and comprises 1 main limb 1, 2 web plates 2 and 3 wing plates 3, wherein the section disclosed by the invention can be integrally formed by extrusion molding, or hot rolling molding, or can be combined to form, firstly, the 2 web plate 2 is welded with the 1 main limb 1 formed by hot rolling, and the 2 web plate 2 is welded with the 3 wing plates 3; secondly, the extruded or hot-rolled T-shaped section comprises 2 webs 2 and 3 flanges 3 which are welded with the extruded or hot-rolled 1 main limb 1.
1, the main limb 1 is used as a main bearing structure and is also used for connecting an iron tower diagonal material; the 2 web plates 2 are used for connecting 1 main limb 1 and 3 wing plates 3, and the 3 wing plates 3 and the 2 web plates 2 are vertical and have an included angle of 90 degrees. 1 the main limbs 1 and 2 web plates 2 are Y-shaped, 2 web plates 2 and 3 wing plates 3 are T-shaped, and the figure 4 is combined.
The Y-shaped part is a main bearing part of the main material and is connected with the inclined material; the T-shaped part is used as a part of the YT section and can participate in the axial tension and compression bearing of the member, the turning radius of the whole section rotating around the axis y0-y0 is increased when the member is bent, so that the turning radius of the whole section rotating around the axis x0-x0 is approximate to or equal to the turning radius of the section rotating around the axis x0-x0, and the stress characteristic of the section can be improved and the material can be fully utilized as shown in figure 5.
The T-shaped portion may serve as a track for attaching a fall arrest self-lock, as shown in figures 6, 7 and 8.
The novel structure type of the YT-shaped section bar comprises a Y-shaped part and a T-shaped part. The Y-shaped part consists of an angle section bar and a web plate 2, and the web plate 2 is positioned on one side of the limb back of the angle section bar; the T-shaped part is formed by connecting a web plate 2 and a wing plate 3, the web plate 2 and the wing plate 3 are mutually vertical, the web plate 2 is positioned at the central line position of the wing plate 3, and the web plate 2 is a Y-shaped part and is shared with the T-shaped part;
the included angles of the web plate 2 and the two outer skins of the angle section bar can be the same or different, and the angle range is 30-135 degrees.
When the main limb 1 is an angle section, the main limb 1 is equilateral, YT limb width is multiplied by limb thickness, such as YT140 multiplied by 14, which means that the main limb 1 is a YT-type section with limb width of 140mm and limb thickness of 14 mm; when the main limb 1 is not equilateral, YT limb width is 1X limb width is 2X limb thickness, for example YT 125X 100X 10, which means that the main limb 11 limb width is 125mm, the main limb 1 width is 100mm, and the limb thickness is 10 mm.
When the main stressed material is a round tube, the OT tube diameter x wall thickness, for example, OT168 x 12, means a section bar with T-shaped structure with an outer diameter of 168mm and a wall thickness of 12 mm; when the main stress material is a channel steel, the height CT multiplied by the leg width multiplied by the wall thickness, for example, CT140 multiplied by 60 multiplied by 8, represents a section with a T-shaped structure with the channel steel height of 140mm, the leg width of 60mm and the wall thickness of 8 mm;
the section form of the main limb 1 of the invention comprises but is not limited to 90-degree equilateral angle steel, 90-degree unequal angle steel, 60-degree angle steel and other structural angle profiles comprising the section structures of the two limbs, and the included angle ranges from 30 degrees to 270 degrees.
The main limb 1 can also be a round pipe structure, a cold-bending section, a hot-rolling section and the like, and is matched with a T-shaped structure.
The length of the part of the bolt which penetrates through the ribbed plate and is exposed is 0 mm-100 mm.
The section bar comprises integral extrusion molding, integral hot rolling molding, continuous welding of an extruded material and a hot rolled material, spot welding of the extruded material and the hot rolled material and plate welding molding.
The section bar of the invention comprises but is not limited to aluminum alloy, alloy steel, high-strength low-alloy steel, carbon steel, stainless steel, aluminum alloy, copper and the like.
The invention is used and installed
The YT profile has the same design, processing, construction and installation as the traditional angle steel method.
The YT section bar has the function of an anti-falling guide rail, and the use and installation of the self-locking device are the same as those of the existing method for installing the self-locking device on the T-shaped guide rail.
THE ADVANTAGES OF THE PRESENT INVENTION
1, the geometrical property of the YT section is optimized, the minimum shaft turning radius of the section is improved, the bearing capacity of the section rotating around a weak shaft is improved, and the turning radius of a main shaft of a symmetry shaft is the same as or similar to that of another main shaft, so that the optimization is achieved. Compared with the most common angle steel which can only be designed and calculated according to the weakest main shaft, the novel angle steel improves the material utilization rate, has the same length of the component, reduces the slenderness ratio, improves the bearing capacity of the component under pressure, improves the material utilization rate and reduces the weight of the component;
2, YT cross-section bar can direct mount prevent falling from the auto-lock ware, need not install and prevent falling guide rail, guide rail connecting plate, connecting bolt etc. has avoided purchase and processing to prevent falling guide rail, connecting plate and bolt, has reduced processing, material cost, has reduced construction cost, has simplified the structure, has improved iron tower overall reliability, has improved constructor's security.
Example 3
The material is an aluminum alloy material, the section of the section is integrally extruded and formed, the main alloy components are Zn, Mg and Cu, the specification is YT140 multiplied by 14, the width of the main limb 1 is 140mm, and the thickness is 14 mm; the length of the web 2 is 50mm, and the thickness is 10 mm; the width of the wing plate 3 is 36mm, the average thickness is 6mm, the wing plate is used as a main material of a transmission tower, and the whole section participates in design calculation of tension compression bending. The inclined material of the iron tower is connected to the two main limbs 1 through bolts and gusset plates; the joints of the main materials are connected with the outer flitch through inner package angle steel. When a constructor climbs the tower, the anti-falling self-locking device is connected to the T-shaped part, and then the tower climbing construction operation can be carried out.
The YT section is made of low alloy steel Q345B, the section angle type main limb 1 is a hot-rolled section, the web plate 2 and the wing plate 3 are T-shaped hot-rolled sections, the two parts are welded and connected according to the structure of the YT section, the specification is YT200 multiplied by 20, the width of the main limb 1 is 200mm, and the thickness is 20 mm; the length of the web plate 2 is 100mm, and the thickness is 8 mm; the width of the wing plate 3 is 50mm, the thickness is 6mm, the wing plate is used as a main material of a transmission tower, and the whole section participates in design calculation of tension, compression and bending. The inclined material of the iron tower is connected to the two main limbs 1 through bolts and gusset plates; the joints of the main materials are connected with the outer flitch through inner package angle steel. When a constructor climbs the tower, the anti-falling self-locking device is connected to the T-shaped part, and then the tower climbing construction operation can be carried out.
The YT section is made of low alloy steel Q235B, the section angle type main limb 1 is a hot-rolled section, the web 2 and the wing plate 3 are steel plates, and the web 2 is welded with the limb back of the hot-rolled main limb 1 and forms an included angle of 135 degrees with the outer skin; the web 2 and the wing plate 3 are vertically welded, and the welding seam is positioned at the central line position of the wing plate 3 to form a T-shaped structure. The specification is YT100 is multiplied by 10, the width of the main limb 1 is 100mm, and the thickness is 10 mm; the length of the web plate 2 is 60mm, and the thickness is 6 mm; the width of the wing plate 3 is 40mm, the thickness is 6mm, the wing plate is used as a main material of a transmission tower, and the whole section participates in design calculation of tension, compression and bending. The inclined material of the iron tower is connected to the two main limbs 1 through bolts and gusset plates; the joints of the main materials are connected with the outer flitch through inner package angle steel. When a constructor climbs the tower, the anti-falling self-locking device is connected to the T-shaped part, and then the tower climbing construction operation can be carried out.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (10)
1. A YT-type section bar, comprising: a main limb (1), a web plate (2) and a wing plate (3);
the web plate (2) and the wing plate (3) are of plate-shaped structures;
the cross section of the main limb (1) is of an arc or right-angle structure, and any point or right-angle vertex on the arc of the main limb (1) is fixed with the web plate (2) to form a Y-shaped section;
the web (2) and the wing plate (3) are fixed to form a T-shaped section and participate in axial tension and compression bearing of the member;
the wing plate (3) is connected with a falling-proof self-locking device or a construction holding pole or a climbing tower device.
2. YT-section profile according to claim 1, characterized in that the main limbs (1) and the webs (2) and the wings (3) are welded or formed in one piece;
wherein the integrally forming comprises extruding, hot rolling, cold rolling or pultrusion.
3. YT-section profile according to claim 2, characterized in that the web (2) is connected to the wing (3) at the midline.
4. A YT-section profile according to claim 1, characterized in that the thickness of the side of the wing (3) connected to the web (2) is gradually increased from the two ends of the wing (3) to the connection with the web (2);
the other side of the wing plate (3) connected with the web plate (2) is a plane;
the anti-falling self-locking device or the construction holding pole or the tower climbing equipment is sheathed and buckled on the wing plate (3).
5. A YT-section profile according to claim 1, characterized in that the radius of gyration around the symmetry axis of the section and the radius of gyration perpendicular to the symmetry axis of the YT-section profile are equal or close.
6. YT-section profile according to claim 1, characterized in that both sides of the main limb (1) are provided with an angle with the web (2).
7. YT-section profile according to claim 1, characterized in that when the cross-section of the main limb (1) is of an arc-shaped structure, the main limb (1) is of a straight tube shape, and the axis of the main limb (1) is parallel to the wing plate (3).
8. YT-section profile according to claim 1, characterized in that the main limbs (1) are arranged with a set ratio of their ends.
9. A transmission tower is characterized by comprising a plurality of supporting legs, main materials and cross arms, wherein the supporting legs, the main materials and the cross arms adopt YT section profiles as claimed in any one of claims 1-8.
10. A power transmission first-aid repair tower is characterized by comprising a plurality of tower sections, wherein the main material of the tower sections adopts a YT section profile as claimed in any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030647.0A CN112252805A (en) | 2020-09-27 | 2020-09-27 | YT type cross section sectional material and transmission tower or emergency repair tower adopting same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011030647.0A CN112252805A (en) | 2020-09-27 | 2020-09-27 | YT type cross section sectional material and transmission tower or emergency repair tower adopting same |
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| CN112252805A true CN112252805A (en) | 2021-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236640A (en) * | 2021-12-06 | 2022-03-25 | 中国电建集团贵州电力设计研究院有限公司 | Method for selecting steel for icing high-altitude meteorological ice observation test tower |
-
2020
- 2020-09-27 CN CN202011030647.0A patent/CN112252805A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236640A (en) * | 2021-12-06 | 2022-03-25 | 中国电建集团贵州电力设计研究院有限公司 | Method for selecting steel for icing high-altitude meteorological ice observation test tower |
| CN114236640B (en) * | 2021-12-06 | 2024-03-26 | 中国电建集团贵州电力设计研究院有限公司 | Method for selecting tower steel for repeated ice high-altitude meteorological ice observation test |
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