阅读说明：本技术 一种基于高精度平面桁架的低含钢量超大跨度钢结构系统 (Low-steel-content super-large-span steel structure system based on high-precision planar truss ) 是由 耿彪 于 2021-09-18 设计创作，主要内容包括：本发明公开一种基于高精度平面桁架的低含钢量超大跨度钢结构系统,通过预制组件,现场吊装,钢丝绳替代一部分桁架,大大的提高了安装效率,同时能满足超大跨度的要求；多个跨架平行等距分布,纵向连接架垂直于跨架设置,多个纵向连接架等间距设置与跨架配合形成双层的方形网格结构,纵向连接架的结构与跨架结构相似,纵向连接架的上、下杆为直杆,上、下杆两端与跨架的上弦杆和下弦杆固定连接,上、下杆之间也设置有零杆和腹杆；方形网格结构的上侧通过交叉的斜拉杆连接,方形网格结构的下侧通过交叉的柔性钢丝绳结构连接在一起；导轨平行于跨架设置,且多根导轨等间距纵向设置在跨架顶部,相邻的两个导轨之间设置有膜。(The invention discloses a low-steel-content super-large-span steel structure system based on a high-precision plane truss, wherein a steel wire rope replaces a part of the truss through prefabricating components and hoisting on site, so that the installation efficiency is greatly improved, and meanwhile, the requirement of super-large span can be met; the plurality of the cross frames are distributed in parallel at equal intervals, the longitudinal connecting frames are perpendicular to the cross frames and are arranged at equal intervals to be matched with the cross frames to form a double-layer square grid structure, the structure of the longitudinal connecting frames is similar to that of the cross frames, the upper rods and the lower rods of the longitudinal connecting frames are straight rods, the two ends of the upper rods and the two ends of the lower rods are fixedly connected with the upper chord members and the lower chord members of the cross frames, and zero rods and web members are also arranged between the upper rods and the lower rods; the upper sides of the square grid structures are connected through crossed diagonal draw bars, and the lower sides of the square grid structures are connected together through crossed flexible steel wire rope structures; the guide rails are arranged in parallel to the cross frame, the guide rails are longitudinally arranged at the top of the cross frame at equal intervals, and a film is arranged between every two adjacent guide rails.)

1. The low-steel-content ultra-large-span steel structure system based on the high-precision planar truss is characterized by comprising a span frame (1), a longitudinal connecting frame (2), a flexible steel wire rope structure (4), a movable mounting seat (5), a guide rail (7) and a membrane (8), wherein the span frame (1) is distributed in parallel and equidistant mode, the span frame (1) comprises an upper chord (11), a lower chord (12), a zero rod (13), web members (14) and a flange connecting plate (15), the upper chord (11) and the lower chord (12) are arranged in parallel, the upper chord (11) is positioned right above the lower chord (12), the upper chord (11) and the lower chord (12) are fixedly connected through a plurality of web members (14) or web members (14) which are arranged in an inclined mode or the web members (14) which are arranged vertically are fixedly connected, and the corresponding two ends of the upper chord (11) and the lower chord (12) are fixedly connected through the zero rod (13), the two ends of the upper chord (11) and the lower chord (12) are respectively fixedly provided with a flange connecting plate (15), the flange connecting plates (15) are respectively fixedly connected with a movable mounting base (5), and the movable mounting bases (5) are fixedly connected to foundation bolts of the concrete ground pile through ear plate structures (6);

the vertical connecting frames (2) are perpendicular to the spanning frame (1), the plurality of vertical connecting frames (2) are arranged at equal intervals and matched with the spanning frame (1) to form a double-layer square grid structure, the structure of the vertical connecting frames (2) is similar to that of the spanning frame (1), the upper rods and the lower rods of the vertical connecting frames (2) are straight rods, the two ends of the upper rods and the lower rods are fixedly connected with the upper chord (11) and the lower chord (12) of the spanning frame (1), and zero rods (13) and web members (14) are also arranged between the upper rods and the lower rods;

the upper sides of the square grid structures are connected through crossed diagonal draw bars (3), and the lower sides of the square grid structures are connected together through crossed flexible steel wire rope structures (4);

guide rail (7) are on a parallel with and stride a setting (1), and many guide rail (7) equidistant vertical setting is striding a (1) top, adjacent two be provided with membrane (8) between guide rail (7), the structure of guide rail (7) is: the guide rail comprises a guide rail body (71), the guide rail body (71) is of an arc-shaped structure and distributed along the arch direction of a steel structure plane truss, the cross section of the guide rail body (71) is in a flat 8 shape, guide holes (73) are formed in the guide rail body (71) along the direction of the guide rail body (71), two guide holes (73) are symmetrically formed in the guide rail body (71), narrow slits (72) are formed in two ends of the guide rail body (71), the narrow slits (72) are also formed along the direction of the guide rail body (71), the narrow slits (72) are communicated with the adjacent guide holes (73), a distance is reserved between the two guide holes (73), a blind hole (74) is formed in the upper side of the guide rail body (1) between the two guide holes (73), and the guide rail body (1) is fixed on the steel structure plane truss by installing self-tapping screws (75) at the bottom of the blind hole (74) in the guide rail body (71), the guide holes (73) of two adjacent guide rail bodies (71) are used for inserting the film (8).

2. The high-precision plane truss-based low-steel-content ultra-large-span steel structure system is characterized in that a closing-up structure (76) is arranged on the upper side of the blind hole (74), the closing-up structure (76) enables the opening size of the blind hole (74) to be smaller than the size of an inner cavity of the blind hole (74), sealing strips (77) are filled in the upper portion of the blind hole (74) and the closing-up structure (76), and the closing-up structure (76) can be matched with the sealing strips (77) to clamp the sealing strips (77) to prevent the sealing strips (77) from falling off.

3. The high-precision plane truss-based low-steel-content ultra-large-span steel structure system is characterized in that the guide rail body (71) is of an integrally formed sheet metal structure.

4. The high-precision planar truss-based low-steel-content ultra-large-span steel structure system as claimed in claim 1, wherein the flexible steel wire rope structure (4) comprises flexible steel wire ropes (41), flexible steel wire rope fixing ends (42), wire tighteners (43) and flexible supporting connecting plates (44), the flexible supporting connecting plates (44) are fixed on adjacent main members (45), the flexible steel wire rope fixing ends (42) are arranged at both ends of each flexible steel wire rope (41), the flexible steel wire rope fixing ends (42) at both ends of each flexible steel wire rope (41) are respectively fixed on the flexible supporting connecting plates (44) on the adjacent main members (45), the wire tighteners (43) are arranged on the flexible steel wire ropes (41), and tension between the adjacent main members (45) is adjusted through the wire tighteners (43).

5. The high-precision plane truss-based low-steel-content ultra-large-span steel structure system as claimed in claim 1, wherein the lug plate structure (6) comprises an adjusting positioning plate (61) and lug plates (62), the adjusting positioning plate (61) is a plate-shaped structure, adjusting positioning holes (63) are transversely and symmetrically arranged on two sides of the adjusting positioning plate (61), the adjusting positioning holes (63) are half-open slot hole structures, the adjusting positioning holes (63) are used for adapting to and correcting the installation angle of the adjusting positioning plate (61), the lug plates (62) are longitudinally and symmetrically arranged on the adjusting positioning plate (61), the lug plates (62) are perpendicular to the adjusting positioning plate (61) and are located between the adjusting positioning holes (63) on two sides of the adjusting positioning plate (61), lug plate holes (64) are transversely arranged on the adjusting positioning plate (61), two between the otic placode (62) through on the otic placode hole (64) cartridge round pin axle (65) with truss bottom movable mounting seat (5) swing joint together for movable mounting seat (5) can rotate around round pin axle (65) and adapt to the different installation angle of truss.

6. The high-precision plane truss-based low-steel-content ultra-large span steel structure system as claimed in claim 1, wherein reinforcing ribs (67) are transversely arranged between the two ear plates (62) and on the adjusting and positioning plates (61) outside the ear plates (62).

7. The high-precision plane truss-based low-steel-content ultra-large-span steel structure system as claimed in claim 1, wherein a groove (8) used as a positioning mark is arranged at the highest point of the lug plate (2), and the groove (8) is used for positioning and adjusting the relative height of the positioning plate (1).

8. The high-precision plane truss-based low-steel-content ultra-large-span steel structure system is characterized in that a sleeve (9) is sleeved on an upper rod of the longitudinal connecting frame (2), and the sleeve (9) is used for converting sliding friction into rolling friction when a film (8) is pulled.

9. The high-precision plane truss-based low-steel-content ultra-large span steel structure system is characterized in that the edges of the guide rail bodies (71) on two sides of the narrow slits (72) are provided with rubber coatings, and the rubber coatings are used for protecting the film (8) and preventing the film (8) from being worn when being stretched.

10. The high-precision plane truss-based low-steel-content ultra-large span steel structure system as claimed in claim 1, wherein a positioning groove (79) is formed in the middle of the bottom side of the blind hole (74), and the positioning groove (79) is used for installing a self-tapping screw (75) for reference positioning.

Technical Field

The invention discloses a low-steel-content ultra-large-span steel structure system based on a high-precision planar truss, and belongs to the technical field of steel structure planar trusses.

Background

Along with the application scenes of the truss structure are wider and wider, the span of the truss is also larger and larger, so that the construction process is more and more difficult, the requirement of the super-large span is hardly met by the traditional construction mode, and even if the construction mode can be realized, the installation process is more and more careless.

Disclosure of Invention

The invention overcomes the defects in the prior art, provides the low-steel-content super-large-span steel structure system based on the high-precision planar truss, and the steel wire rope replaces a part of the truss through prefabricating the assembly and hoisting on site, thereby greatly improving the installation efficiency and simultaneously meeting the requirement of super-large span.

In order to solve the technical problems, the invention adopts the technical scheme that: a low-steel-content ultra-large-span steel structure system based on a high-precision plane truss comprises a span frame, a longitudinal connecting frame, a flexible steel wire rope structure, a movable mounting seat, a guide rail and a film, wherein a plurality of the span frames are distributed in parallel and equidistantly, the straddle comprises an upper chord, a lower chord, a zero bar, a web member and a flange connecting plate, the upper chord and the lower chord are arranged in parallel, the upper chord is positioned right above the lower chord, a plurality of or obliquely arranged web members are arranged between the upper chord and the lower chord, or the vertically arranged web members are connected and fixed, and the corresponding two ends of the upper chord member and the lower chord member are connected and fixed through zero rods, the two ends of the upper chord and the lower chord are both fixedly provided with flange connecting plates, the flange connecting plates are both fixedly connected with movable mounting seats, the movable mounting base is fixedly connected to a foundation bolt of the concrete ground pile through an ear plate structure;

the longitudinal connecting frames are perpendicular to the spanning frame, a plurality of longitudinal connecting frames are arranged at equal intervals and matched with the spanning frame to form a double-layer square grid structure, the structure of each longitudinal connecting frame is similar to that of the spanning frame, the upper rods and the lower rods of each longitudinal connecting frame are straight rods, the two ends of each upper rod and the two ends of each lower rod are fixedly connected with the upper chord and the lower chord of the spanning frame, and zero rods and web members are also arranged between the upper rods and the lower rods;

the upper sides of the square grid structures are connected through crossed diagonal draw bars, and the lower sides of the square grid structures are connected together through crossed flexible steel wire rope structures;

the guide rail is on a parallel with and strides a setting, and many the equidistant vertical setting of guide rail is striding a top, adjacent two be provided with the membrane between the guide rail, the structure of guide rail is: including the guide rail body, the guide rail body is the arc structure, moves towards the distribution along steel construction plane truss arch, the cross-section of guide rail body is "8" font of lying flat, this internal trend along the guide rail body of guide rail sets up the guide hole, just the symmetry is provided with two guide holes on the guide rail body, the both ends of guide rail body all are provided with the slot, the slot also sets up along the trend of guide rail body, slot and adjacent guide hole intercommunication, two leave the distance between the guide hole, two guide rail body upside between the guide hole is provided with the blind hole, the guide rail body is fixed the guide rail body on steel construction plane truss through installing self-tapping screw in the blind hole bottom, adjacent two be used for alternating the membrane between the guide hole of guide rail body.

The blind hole upside is provided with binding off structure, binding off structure makes the opening size of blind hole be less than the size of blind hole inner chamber, blind hole upper portion and binding off structure intussuseption are equipped with the sealing strip, what the binding off structure can match blocks the sealing strip, prevents that the sealing strip from droing.

The guide rail body is of an integrally formed sheet metal structure.

The flexible steel wire rope structure comprises a flexible steel wire rope, flexible steel wire rope fixing ends, a wire tightener and flexible supporting connecting plates, the flexible supporting connecting plates are fixed on adjacent main components, the flexible steel wire rope fixing ends are arranged at the two ends of the flexible steel wire rope, the flexible supporting connecting plates at the two ends of the flexible steel wire rope are respectively fixed on the adjacent main components, the wire tightener is arranged on the flexible steel wire rope, and the tension between the adjacent main components is adjusted through the wire tightener.

The otic placode structure is including adjusting locating plate and otic placode, it is platelike structure to adjust the locating plate, the horizontal symmetry in both sides of adjusting the locating plate is provided with the regulation locating hole, the regulation locating hole is half open-ended slot hole structure, it is used for adapting to the installation angle who adjusts the locating plate with the correction to adjust the locating plate to adjust the locating hole, the vertical symmetry of otic placode sets up on adjusting the locating plate, just the otic placode perpendicular to is adjusted the locating plate and is located between the regulation locating hole of adjusting the locating plate both sides, all transversely be provided with the otic placode hole on adjusting the locating plate, two through the movable mounting seat swing joint of cartridge round pin axle and truss bottom in the otic placode hole together, make movable mounting seat can rotate the different installation angle of adaptation truss around the round pin axle.

And reinforcing rib plates are transversely arranged between the two ear plates and on the adjusting positioning plates at the outer sides of the ear plates.

The highest point of the ear plate is provided with a groove used as a positioning mark, and the groove is used for positioning and adjusting the relative height of the positioning plate.

The upper rod of the longitudinal connecting frame is sleeved with a sleeve, and the sleeve is used for converting sliding friction into rolling friction when a film is pulled.

The edge of the guide rail body on the two sides of the narrow slit is provided with rubber coating, and the rubber coating is used for protecting a film and preventing the film from being worn during stretching.

And a positioning groove is formed in the middle of the bottom side of the blind hole and used for reference positioning of installing the tapping screw.

Compared with the prior art, the invention has the following beneficial effects.

1. When the prestress between the main components changes, the flexible steel wire rope can be adjusted through the wire grip, the prestress between the main components is corrected, the adjusting process is simple, the working efficiency is greatly improved, the stress adjusting result can be visually seen through the tension meter, and the adjustment is accurate.

2. According to the invention, the adjusting positioning hole on the adjusting positioning plate is provided with the long-hole structure, so that when the foundation bolt on the concrete pile deviates, the adjusting positioning plate can be rotated or moved, the installation of the adjusting positioning plate is not influenced, the reinforcing rib plates support the lug plates from two sides, the structural strength of the lug plates is improved, the groove of the positioning mark is arranged on the top of the lug plate, the subsequent positioning through a tool is facilitated, and the azimuth angle and the relative height of the adjusting positioning plate are confirmed.

3. The straddle disclosed by the invention adopts a double-layer structure, so that ground assembly and batch production are facilitated, the mounting efficiency is improved, and the mounting risk is reduced.

4. According to the invention, narrow slits are arranged at two ends of the 8-shaped guide rail body and are communicated with the respective guide holes to form a pull-off prevention guide rail structure with a large belly bag small outlet, two sides of the membrane are correspondingly inserted into the guide holes of the two adjacent guide rail bodies, the membrane is pulled to move from one end of the guide rail body to the other end of the guide rail body along the direction of the guide holes to complete membrane covering, high-altitude operation and rivets are not needed, the guide rail body is fixed on a steel structure plane truss only through self-tapping screws, the membrane covering efficiency is greatly improved, and the high-altitude operation risk is reduced.

5. The blind hole is arranged to reduce the dead weight of the guide rail body, the wall thickness of the tapping screw is reduced, the blind hole is convenient to install, the sealing strip is clamped on the blind hole to prevent the blind hole from being drenched by rain in rainy days, and the tapping screw is protected to prevent rusting.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the ear plate structure of the present invention.

Fig. 3 is a top sectional view of the ear plate structure of the present invention.

Fig. 4 is a schematic view of the structure of a flexible steel cord according to the invention.

FIG. 5 is a schematic structural view of the straddle of the present invention.

Fig. 6 is a schematic structural view of the guide rail of the present invention.

Fig. 7 is a schematic structural view of the guide rail mounting weather strip of the present invention.

Fig. 8 is a view showing a state of use of the guide rail of the present invention.

Fig. 9 is a schematic structural view of the longitudinal connecting frame mounting sleeve of the present invention.

In the figure: the device comprises a span frame 1, an upper chord 11, a lower chord 12, a zero rod 13, a web member 14, a flange connecting plate 15, a longitudinal connecting frame 2, a diagonal pulling rod 3, a flexible steel wire rope structure 4, a flexible steel wire rope 41, a flexible steel wire rope fixed end 42, a wire tightener 43, a flexible supporting connecting plate 44, a main component 45, a movable mounting seat 5, an ear plate structure 6, an adjusting positioning plate 61, an ear plate 62, an adjusting positioning hole 63, an ear plate hole 64, a pin shaft 65, a reinforcing rib plate 67, a groove 68, a guide rail 7, a guide rail body 71, a narrow slit 72, a guide hole 73, a blind hole 74, a self-tapping screw 75, a closing-in structure 76, a sealing strip 77, a positioning groove 79, a membrane 8 and a sleeve 9.

Detailed Description

As shown in fig. 1 to 9, the low-steel-content ultra-large-span steel structure system based on the high-precision planar truss comprises a span 1, a longitudinal connecting frame 2, a flexible steel wire rope structure 4, a movable mounting seat 5, a guide rail 7 and a membrane 8, wherein a plurality of the span 1 are distributed in parallel and equidistantly, the span 1 comprises an upper chord 11, a lower chord 12, a zero member 13, web members 14 and flange connecting plates 15, the upper chord 11 and the lower chord 12 are arranged in parallel, the upper chord 11 is positioned right above the lower chord 12, the upper chord 11 and the lower chord 12 are connected and fixed through a plurality of or obliquely arranged web members 14 or vertically arranged web members 14, corresponding two ends of the upper chord 11 and the lower chord 12 are connected and fixed through the zero member 13, the two ends of the upper chord 11 and the lower chord 12 are both fixedly provided with the flange connecting plates 15, the movable mounting seat 5 is connected and fixed on the flange connecting plates 15, the movable mounting base 5 is fixedly connected to a foundation bolt of the concrete ground pile through an ear plate structure 6;

the longitudinal connecting frames 2 are perpendicular to the spanning frame 1, the plurality of longitudinal connecting frames 2 are arranged at equal intervals and matched with the spanning frame 1 to form a double-layer square grid structure, the structure of the longitudinal connecting frames 2 is similar to that of the spanning frame 1, the upper rods and the lower rods of the longitudinal connecting frames 2 are straight rods, the two ends of the upper rods and the two ends of the lower rods are fixedly connected with the upper chord 11 and the lower chord 12 of the spanning frame 1, and the zero rods 13 and the web members 14 are also arranged between the upper rods and the lower rods;

the upper sides of the square grid structures are connected through crossed diagonal draw bars 3, and the lower sides of the square grid structures are connected together through crossed flexible steel wire rope structures 4;

the guide rail 7 is on a parallel with and strides 1 setting, and many guide rail 7 equidistant vertical setting is striding 1 top, adjacent two be provided with membrane 8 between the guide rail 7, the structure of guide rail 7 is: including guide rail body 71, guide rail body 71 is the arc structure, moves towards the distribution along steel construction plane truss arch, guide rail body 71's cross-section is the "8" font of lying flat, set up guide hole 73 along guide rail body 71's trend in guide rail body 71, just the symmetry is provided with two guide holes 73 on guide rail body 71, the both ends of guide rail body 71 all are provided with slot 72, slot 72 also sets up along guide rail body 71's trend, slot 72 and adjacent guide hole 73 intercommunication, two leave the distance between the guide hole 73, two guide rail body 1 upside between the guide hole 73 is provided with blind hole 74, guide rail body 71 is fixed guide rail body 1 on steel construction plane truss through installing self-tapping screw 75 in blind hole 74 bottom, and adjacent two be used for interlude membrane 8 between guide hole 73 of guide rail body 71.

Blind hole 74 upside is provided with binding off structure 76, binding off structure 76 makes the opening size of blind hole 74 be less than the size of blind hole 74 inner chamber, blind hole 74 upper portion and binding off structure 76 are filled with sealing strip 77, what binding off structure 76 can match blocks sealing strip 77, prevents that sealing strip 77 from droing.

The guide rail body 71 is of an integrally formed sheet metal structure.

Flexible wire rope structure 4 includes flexible wire rope 41, flexible wire rope stiff end 42, turn-buckle 43 and flexible support connecting plate 44, flexible support connecting plate 44 is fixed on adjacent principal component 45, flexible wire rope 41's both ends all are provided with flexible wire rope stiff end 42, the flexible wire rope stiff end 42 at flexible wire rope 41 both ends is fixed respectively at the flexible support connecting plate 44 on adjacent principal component 45, be provided with turn-buckle 43 on the flexible wire rope 41, through tension between the adjacent principal component 45 of turn-buckle 43 adjustment.

Ear plate structure 6 is including adjusting locating plate 61 and otic placode 62, it is platelike structure to adjust locating plate 61, the horizontal symmetry in both sides of adjusting locating plate 61 is provided with adjusting positioning hole 63, adjusting positioning hole 63 is half open-ended slot hole structure, adjusting positioning hole 63 is used for adapting to adjust and rectifies the installation angle who adjusts locating plate 61, the vertical symmetry of otic placode 62 sets up on adjusting locating plate 61, just locating plate 61 is adjusted and is located between the adjusting positioning hole 63 of adjusting locating plate 61 both sides to otic placode 62 perpendicular to, all transversely be provided with otic placode hole 64 on adjusting locating plate 61, two through 5 swing joint of cartridge pin 65 and the movable mounting seat of truss bottom together on the otic placode hole 64 between the otic placode 62, make movable mounting seat 5 can rotate around round pin 65 and adapt to the different installation angle of truss.

Reinforcing ribs 67 are transversely arranged between the two ear plates 62 and on the adjusting and positioning plate 61 at the outer side of the ear plates 62.

The highest point of the ear plate 2 is provided with a groove 8 used as a positioning mark, and the groove 8 is used for positioning and adjusting the relative height of the positioning plate 1.

The upper rod of the longitudinal connecting frame 2 is sleeved with a sleeve 9, and the sleeve 9 is used for converting sliding friction into rolling friction when the film 8 is pulled.

The edges of the guide rail bodies 71 on two sides of the narrow slits 72 are provided with rubber coatings, and the rubber coatings are used for protecting the film 8 and preventing the film 8 from being worn when being stretched.

The bottom side of the blind hole 74 is provided with a positioning groove 79 in the middle, and the positioning groove 79 is used for installing the reference positioning of the tapping screw 75.

When the prestress between the main components changes, the flexible steel wire rope can be adjusted through the wire grip, the prestress between the main components is corrected, the adjusting process is simple, the working efficiency is greatly improved, the stress adjusting result can be visually seen through the tension meter, and the adjustment is accurate.

According to the invention, the adjusting positioning hole on the adjusting positioning plate is provided with the long-hole structure, so that when the foundation bolt on the concrete pile deviates, the adjusting positioning plate can be rotated or moved, the installation of the adjusting positioning plate is not influenced, the reinforcing rib plates support the lug plates from two sides, the structural strength of the lug plates is improved, the groove of the positioning mark is arranged on the top of the lug plate, the subsequent positioning through a tool is facilitated, and the azimuth angle and the relative height of the adjusting positioning plate are confirmed.

The straddle disclosed by the invention adopts a double-layer structure, so that ground assembly and batch production are facilitated, the mounting efficiency is improved, and the mounting risk is reduced.

According to the invention, narrow slits are arranged at two ends of the 8-shaped guide rail body and are communicated with the respective guide holes to form a pull-off prevention guide rail structure with a large belly bag small outlet, two sides of the membrane are correspondingly inserted into the guide holes of the two adjacent guide rail bodies, the membrane is pulled to move from one end of the guide rail body to the other end of the guide rail body along the direction of the guide holes to complete membrane covering, high-altitude operation and rivets are not needed, the guide rail body is fixed on a steel structure plane truss only through self-tapping screws, the membrane covering efficiency is greatly improved, and the high-altitude operation risk is reduced.

The blind hole is arranged to reduce the dead weight of the guide rail body, the wall thickness of the tapping screw is reduced, the blind hole is convenient to install, the sealing strip is clamped on the blind hole to prevent the blind hole from being drenched by rain in rainy days, and the tapping screw is protected to prevent rusting.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.