Steel structure net rack for gymnasium roof

Abstract

The invention discloses a steel structure net rack for a gymnasium roof, and relates to the technical field of roof steel structures, the steel structure net rack comprises a net rack main body and an adjusting mechanism; the net rack main body comprises a vertical main body supporting rod, a transverse main body supporting rod and a supporting structure; the adjusting mechanism comprises a first electric sliding rail, a second electric sliding rail, a first ceiling structure and a second ceiling structure. The first electric sliding rail and the second electric sliding rail control the second ceiling structure to coincide with the first ceiling structure, the roof of the gymnasium is opened, ventilation in the gymnasium is assisted, illumination can be enhanced in the daytime, the second ceiling structure is combined with the first ceiling structure, the roof of the gymnasium is closed to prevent rainwater from invading, and the using effect of the gymnasium is improved. The air pump, the high-pressure airflow channel and the air outlet are matched to control the sealing strip to be separated from the first electric sliding rail and the second electric sliding rail, abrasion of the sealing strip is reduced, the sealing strip is reset when the air pump is closed, and the effective waterproof effect is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of roof steel structures, in particular to a steel structure grid used for a gymnasium roof. Background Art

[0002] A gymnasium is a large-scale building facility specially used for sports activities and events. The steel grid structure of the gymnasium roof is a complex spatial structure. The steel grid structure is a grid-like spatial bar system structure composed of bars according to a certain pattern. It has high rigidity and stability. It has the advantages of light weight, high rigidity, excellent seismic performance, easy factory production, and convenient installation. This structure is suitable for buildings of various spans, such as gymnasiums, theaters, canteens, restaurants and other public buildings, and can also be used in industrial buildings such as industrial plant workshop roofs.

[0003] The existing steel structure grid of the gymnasium roof has certain disadvantages when in use. When the existing steel structure grid of the gymnasium roof is in use, the top of the gymnasium steel structure grid is usually fixed as closed or open, and the state of the roof cannot be changed according to the actual use needs on site. When it is hot in summer, the closed steel structure roof is not conducive to heat dissipation. If the roof is fixed and designed to be open, although it is convenient for ventilation, it is easy to cause rainwater to invade when it rains, so that the venue can only be used in clear weather, which reduces the use effect of the gymnasium and cannot meet people's needs. Summary of the invention

[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a steel structure grid for a gymnasium roof.

[0005] A steel structure grid for a gymnasium roof, comprising a grid body arranged on the gymnasium roof and an adjustment mechanism arranged on the grid body; wherein the grid body comprises a plurality of groups of vertical main body support rods, transverse main body support rods vertically connected to the vertical main body support rods, and a plurality of groups of support structures arranged between the vertical main body support rods and the transverse main body support rods; the adjustment mechanism comprises a first electric slide rail detachably mounted on the upper end of the transverse main body support rod, a second electric slide rail arranged on one side of the first electric slide rail, a first ceiling structure detachably fixedly arranged below the first electric slide rail and the second electric slide rail, and a first ceiling structure movably arranged between the first electric slide rail and the second electric slide rail The second ceiling structure is arranged between the slide rails; the first ceiling structure can be arranged to overlap or be combined with the second ceiling structure. When the first ceiling structure can be arranged to overlap with the second ceiling structure, the gymnasium roof is in an open state, which can assist ventilation inside the venue and enhance light during the day. When the gymnasium roof needs to be closed, the first electric slide rail and the second electric slide rail are controlled respectively so that the second ceiling structure is located between the first ceiling structure, so that the first ceiling structure and the second ceiling structure are combined to cover the roof and prevent rainwater from intrusion, so that the first ceiling structure and the second ceiling structure can cooperate to achieve the effect of freely opening and closing the gymnasium roof.

[0006] As a further solution of the present invention: the first ceiling structure comprises a first ceiling connecting frame detachably installed between two groups of horizontal main support rods, a second ceiling connecting frame arranged on one side of the first ceiling connecting frame, and a first ceiling board layer detachably installed on the upper ends of the first ceiling connecting frame and the second ceiling connecting frame, wherein the first ceiling board layer is composed of several groups of cover boards.

[0007] As a further solution of the present invention: the first electric slide rail and the second electric slide rail are both provided with slide rail grooves, the slide rail groove on the first electric slide rail is provided with a first slider detachably connected to the second ceiling structure, the slide rail groove on the second electric slide rail is provided with a second slider detachably connected to the second ceiling structure, and the first slider and the second slider can both slide and move in the slide rail grooves.

[0008] As a further solution of the present invention: the second ceiling structure includes a first connecting frame arranged between several groups of the first sliding blocks, a second connecting frame arranged between several groups of the second sliding blocks, and a second ceiling board layer respectively laid on the upper end of the first connecting frame and the upper end of the second connecting frame, the second ceiling board layer is composed of several groups of cover plates, the first sliding block is detachably connected to the first connecting frame, the second sliding block is detachably connected to the second connecting frame, the first sliding block and the second sliding block can respectively drive the two groups of second ceiling board layers to move, the second ceiling board layer is set as a hard ceiling, the second ceiling board layer can be movably arranged above the first ceiling board layer, several groups of the second ceiling board layers and several groups of the first ceiling board layers can be installed at an angle, so that rainwater can roll down in the inclined direction to avoid entering the interior through the gaps.

[0009] As a further solution of the present invention: a sealing assembly is provided on both the first electric slide rail and the second electric slide rail, and the sealing assembly includes a sealing strip movably arranged on the top surface of the inner side of the slide rail groove, a plurality of groups of high-pressure airflow channels respectively installed in the first electric slide rail and the second electric slide rail, an air outlet arranged on one side of the sealing strip and connected to the high-pressure airflow channel, and a plurality of groups of air pumps respectively detachably installed at the lower ends of the first electric slide rail and the second electric slide rail and conveying gas to the high-pressure airflow channel, one end of the high-pressure airflow channel is connected to the air pump, and the air pump conveys high-pressure gas through the high-pressure airflow channel and the air outlet.

[0010] As a further solution of the present invention: the two ends of the second ceiling plate layer extend into the inner sides of the first electric slide rail and the second electric slide rail respectively, the lower end surface of the sealing strip is detachably connected to the upper end surface of the second ceiling plate layer, the sealing strip gradually moves away from the interior of the first electric slide rail and the second electric slide rail along the height direction, and the thickness gradually decreases, the air outlet is obliquely aligned with the upper end of the sealing strip, the sealing strip is set to an elastic material, the air pump separates the sealing strip from the inner top surface of the slide rail groove through the high-pressure airflow channel and the air outlet, the air pump delivers high-pressure gas to squeeze the opposite sealing strip outward, that is, to separate the end of the sealing strip from the inner top surface of the electric slide rail, thereby reducing the wear of the sealing strip and extending the service life of the sealing strip; when the air pump is closed, the free end of the sealing strip will abut against the inner top surface of the electric slide rail under the action of its own elastic force, preventing external rainwater from entering from the side, thereby achieving an effective waterproof effect.

[0011] As a further solution of the present invention: a sealing belt is provided on the upper end surface of the second ceiling board layer on the second connecting frame, and the sealing belt is connected to the lower end surface of the second ceiling board layer on the first connecting frame. The sealing belt is sealed at the upper and lower overlapping areas of the two to prevent the problem of rainwater entering in reverse from the overlapping area during heavy rainfall.

[0012] As a further solution of the present invention: the support structure includes a first oblique support rod obliquely cross-arranged on the inner side of the grid body and a first vertical rod vertically arranged in the grid body, the two ends of the first oblique support rod are respectively fixedly connected to two groups of transverse main body support rods, the top end of the first vertical rod is vertically connected to the transverse main body support rod, and the bottom end of the first vertical rod is fixedly connected to the first oblique support rod, thereby improving the stability between the transverse main body support rods and the vertical main body support rods.

[0013] As a further solution of the present invention: the support structure also includes several groups of second vertical rods arranged between the first oblique support rod and the transverse main support rod below the vertical main support rod, and second oblique support rods arranged between the first oblique support rod and the first vertical rod, two groups of second vertical rods and two groups of second oblique support rods are respectively arranged on both sides of the first vertical rod, the top end of the second vertical rod is fixedly connected to the first oblique support rod, and the bottom end of the second vertical rod is vertically fixed to the transverse main support rod.

[0014] As a further solution of the present invention: a third oblique support rod is installed on one side of the second vertical rod, and the other end of the third oblique support rod is fixedly connected to the transverse main support rod. Two groups of the third oblique support rods are symmetrically arranged on both sides of the first vertical rod. The first oblique support rod, the first vertical rod, the second vertical rod, the second oblique support rod and the third oblique support rod divide the internal structure between the transverse main support rod and the vertical main support rod into a number of triangles. The triangular support can disperse the force of each rod, improve the load-bearing capacity and increase stability.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention provides a grid body and an adjustment mechanism, a first ceiling connecting frame, a second ceiling connecting frame and a first ceiling board layer to form a first ceiling structure, and the first connecting frame, the second connecting frame and the second ceiling board layer are assembled into a second ceiling structure. The first electric slide rail, the second electric slide rail, the first slider and the second slider control the second ceiling structure to overlap with the first ceiling structure, so as to open the roof of the gymnasium, which can assist ventilation inside the venue and enhance light during the day. When the second ceiling structure is combined with the first ceiling structure, the roof of the gymnasium is closed to prevent rainwater from intruding, thereby improving the use effect of the gymnasium. The sealing strip can pass through the two groups of second ceiling board layers to improve the sealing performance. The air pump, the high-pressure air flow channel and the air outlet can cooperate to control several groups of sealing strips to separate from the first electric slide rail and the second electric slide rail respectively, thereby reducing the wear of the sealing strips. When the air pump is turned off, the sealing strips are reset, which has an effective waterproof effect.

[0017] (2) An overall frame is formed by vertical main support rods and horizontal main support rods, and the frame is initially supported by the first oblique support rod and the first vertical rod to improve its stability. The first oblique support rod is supported by the second vertical rod, and the second oblique support rod and the third oblique support rod are respectively connected to the first oblique support rod and the second vertical rod, thereby dividing the internal structure into a number of triangles. The triangular support can disperse the force of each rod, improve the load-bearing capacity, and increase stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a partial structural diagram of the grid body in the present invention.

[0020] Figure 3 It is a partial structural diagram of the supporting structure in the present invention.

[0021] Figure 4 It is a partial structural diagram of the regulating mechanism in the present invention.

[0022] Figure 5 It is a partial structural diagram of the sealing component in the present invention.

[0023] Figure 6 It is a partial structural diagram of the adjustment mechanism and the sealing assembly in the present invention.

[0024] In the figure: 1. vertical main body support rod; 2. horizontal main body support rod; 3. first oblique support rod; 4. first vertical rod; 5. second vertical rod; 6. second oblique support rod; 7. third oblique support rod; 8. first electric slide rail; 9. slide rail groove; 10. first slider; 11. first connecting frame; 12. second electric slide rail; 13. second slider; 14. second connecting frame; 15. first ceiling connecting frame; 16. second ceiling connecting frame; 17. second ceiling board layer; 18. sealing belt; 19. high-pressure air flow channel; 20. air outlet; 21. air pump; 22. sealing strip. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] See also Figure 1 - Figure 2 and Figure 4The present application provides a steel structure grid for a gymnasium roof, comprising a grid body arranged on the gymnasium roof and an adjustment mechanism arranged on the grid body; wherein the grid body comprises a plurality of groups of vertical main body support rods 1, transverse main body support rods 2 vertically connected to the vertical main body support rods 1 and a plurality of groups of support structures arranged between the vertical main body support rods 1 and the transverse main body support rods 2, wherein the plurality of groups of vertical main body support rods 1 and the plurality of groups of transverse main body support rods 2 are assembled into an integral frame; the adjustment mechanism comprises a first electric slide rail 8 detachably mounted on the upper end of the transverse main body support rod 2, a second electric slide rail 12 arranged on one side of the first electric slide rail 8, and a third electric slide rail 8 detachably fixedly arranged below the first electric slide rail 8 and the second electric slide rail 12 A ceiling structure and a second ceiling structure movably arranged between a first electric slide rail 8 and a second electric slide rail 12; the first ceiling structure can be arranged to overlap or be combined with the second ceiling structure. When the first ceiling structure can be arranged to overlap with the second ceiling structure, the gymnasium roof is in an open state, which can assist ventilation inside the venue and enhance light during the day. When the gymnasium roof needs to be closed, the first electric slide rail 8 and the second electric slide rail 12 are controlled respectively so that the second ceiling structure is located between the first ceiling structure, so that the first ceiling structure and the second ceiling structure are combined to cover the roof and prevent rainwater from intruding, so that the first ceiling structure and the second ceiling structure can cooperate to achieve the effect of freely opening and closing the gymnasium roof.

[0028] The first ceiling structure in the present invention comprises a first ceiling connecting frame 15 detachably mounted between two groups of transverse main support rods 2, a second ceiling connecting frame 16 arranged on one side of the first ceiling connecting frame 15, and a first ceiling board layer detachably mounted on the upper ends of the first ceiling connecting frame 15 and the second ceiling connecting frame 16, wherein the first ceiling board layer is composed of a plurality of groups of cover boards.

[0029] In the present invention, both the first electric slide rail 8 and the second electric slide rail 12 are provided with a slide rail groove 9, the slide rail groove 9 on the first electric slide rail 8 is provided with a first slider 10 detachably connected to the second ceiling structure, and the slide rail groove 9 on the second electric slide rail 12 is provided with a second slider 13 detachably connected to the second ceiling structure, and both the first slider 10 and the second slider 13 can slide and move in the slide rail groove 9.

[0030] The second ceiling structure in the present invention includes a first connecting frame 11 arranged between several groups of first sliders 10, a second connecting frame 14 arranged between several groups of second sliders 13, and a second ceiling board layer 17 laid on the upper ends of the first connecting frame 11 and the upper ends of the second connecting frame 14, respectively. The second ceiling board layer 17 is composed of several groups of cover plates. The first slider 10 is detachably connected to the first connecting frame 11, and the second slider 13 is detachably connected to the second connecting frame 14. The first slider 10 and the second slider 13 can respectively drive the two groups of second ceiling board layers 17 to move. The second ceiling board layer 17 is set as a hard ceiling. The second ceiling board layer 17 can be movably arranged above the first ceiling board layer. Several groups of second ceiling board layers 17 and several groups of first ceiling board layers can be installed at an angle, so that rainwater can roll down in the inclined direction to avoid entering the interior through the gap.

[0031] In summary, the cover plates are laid on the first ceiling connecting frame 15 and the second ceiling connecting frame 16 to form the first ceiling plate layer, and the cover plates are laid on the first connecting frame 11 and the second connecting frame 14 to form the second ceiling plate layer 17. The positions of the second ceiling plate layer 17 on the first connecting frame 11 and the second connecting frame 14 can be controlled by the first electric slide rail 8 and the second electric slide rail 12 respectively. The first electric slide rail 8 and the second electric slide rail 12 are started to make the first slider 10 and the second slider 13 slide in the slide rail slot 9, so that the first slider 10 drives the first connecting frame 11 and the second connecting frame 14 to move. 11 moves, and the second slider 13 drives the second connecting frame 14 to move, so that the first connecting frame 11 and the second connecting frame 14 control the second ceiling board layer 17 to move. When the second ceiling board layer 17 overlaps with the first ceiling board layer, the roof of the gymnasium is in an open state, which can assist ventilation inside the venue and enhance light during the day. When the second ceiling board layer 17 and the first ceiling board layer are combined to cover the roof, the roof of the gymnasium is in a closed state, which can prevent rainwater from intruding and make the rainwater roll down in the inclined direction to avoid entering the interior through the gap.

[0032] Embodiment 2

[0033] Reference Figure 4 - Figure 6 , which is the second embodiment of the present invention, wherein the first electric slide rail 8 and the second electric slide rail 12 are both provided with sealing components, and the sealing components include a sealing strip 22 movably arranged on the top surface of the inner side of the slide rail groove 9, a plurality of groups of high-pressure airflow channels 19 respectively installed in the first electric slide rail 8 and the second electric slide rail 12, an air outlet 20 arranged on one side of the sealing strip 22 and connected to the high-pressure airflow channel 19, and a plurality of groups of air pumps 21 respectively detachably installed at the lower ends of the first electric slide rail 8 and the second electric slide rail 12 and conveying gas to the high-pressure airflow channel 19, one end of the high-pressure airflow channel 19 is communicated with the air pump 21, and the air pump 21 conveys high-pressure gas through the high-pressure airflow channel 19 and the air outlet 20.

[0034] The two ends of the second ceiling plate layer 17 in the present invention extend into the inner sides of the first electric slide rail 8 and the second electric slide rail 12 respectively, and the lower end surface of the sealing strip 22 is detachably connected to the upper end surface of the second ceiling plate layer 17, and the sealing strip 22 gradually moves away from the interior of the first electric slide rail 8 and the second electric slide rail 12 along the height direction, and the thickness gradually decreases, and the air outlet 20 is obliquely aligned with the upper end of the sealing strip 22, and the sealing strip 22 is set to be an elastic material, and the air pump 21 separates the sealing strip 22 from the inner top surface of the slide rail groove 9 through the high-pressure air flow channel 19 and the air outlet 20. The air pump 21 delivers high-pressure gas to squeeze the facing sealing strip 22 outward, that is, to separate the end of the sealing strip 22 from the inner top surface of the electric slide rail, reduce the wear of the sealing strip 22, and extend the service life of the sealing strip 22. When the air pump 21 is closed, the free end of the sealing strip 22 will abut against the inner top surface of the electric slide rail under the action of its own elastic force, preventing external rainwater from entering from the side, thereby achieving an effective waterproof effect.

[0035] In the present invention, a sealing belt 18 is provided on the upper end surface of the second ceiling board layer 17 on the second connecting frame 14, and the sealing belt 18 is connected to the lower end surface of the second ceiling board layer 17 on the first connecting frame 11. The sealing belt 18 is sealed at the upper and lower overlapping areas of the two to prevent the problem of rainwater entering in reverse from the overlapping area in heavy rainfall weather.

[0036] In summary, when the first electric slide rail 8 and the second electric slide rail 12 are started, the first slider 10 and the second slider 13 drive the two groups of second ceiling panels 17 to move, so that the sealing belt 18 moves, and the air pump 21 is started, so that the air pump 21 delivers high-pressure gas through the high-pressure air flow channel 19 and discharges it through the air outlet 20, and squeezes the opposite sealing strip 22 outward, that is, the end of the sealing strip 22 is separated from the inner top surface of the first electric slide rail 8 and the second electric slide rail 12, so that the first slider 10 and the second slider 13 drive the second ceiling panel 17 to move, so as to avoid the sealing strip 22 on the second ceiling panel 17 from rubbing against the first electric slide rail 8 and the second electric slide rail 12 respectively, thereby extending the service life of the sealing strip 22; when the first electric slide rail 8 and the second electric slide rail 12 are closed, the air pump 21 is closed, and the free end of the sealing strip 22 will abut against the inner top surface of the slide rail groove 9 under the action of its own elastic force, preventing external rainwater from entering from the side, thereby achieving an effective waterproof effect.

[0037] Embodiment 3

[0038] Reference Figure 1 - Figure 3, which is the second embodiment of the present invention, wherein the support structure in the present invention includes a first oblique support rod 3 obliquely and cross-arranged on the inner side of the grid body and a first vertical rod 4 vertically arranged in the grid body, the two ends of the first oblique support rod 3 are respectively fixedly connected to the two groups of transverse main support rods 2, the top end of the first vertical rod 4 is vertically connected to the transverse main support rod 2, and the bottom end of the first vertical rod 4 is fixedly connected to the first oblique support rod 3, thereby improving the stability between the transverse main support rod 2 and the vertical main support rod 1.

[0039] The supporting structure in the present invention also includes several groups of second vertical rods 5 arranged between the first oblique support rod 3 and the transverse main support rod 2 below the vertical main support rod 1, and second oblique support rods 6 arranged between the first oblique support rod 3 and the first vertical rod 4. The two groups of second vertical rods 5 and the two groups of second oblique support rods 6 are respectively arranged on both sides of the first vertical rod 4, the top end of the second vertical rod 5 is fixedly connected to the first oblique support rod 3, and the bottom end of the second vertical rod 5 is vertically fixed to the transverse main support rod 2.

[0040] In the present invention, a third oblique support rod 7 is installed on one side of the second vertical rod 5, and the other end of the third oblique support rod 7 is fixedly connected to the transverse main support rod 2. Two groups of third oblique support rods 7 are symmetrically arranged on both sides of the first vertical rod 4. The first oblique support rod 3, the first vertical rod 4, the second vertical rod 5, the second oblique support rod 6 and the third oblique support rod 7 divide the internal structure between the transverse main support rod 2 and the vertical main support rod 1 into a plurality of triangles. The triangular support can disperse the force of each rod, improve the load-bearing capacity, and increase the stability, so that the adjustment mechanism can operate safely.

[0041] In summary, the lower parts of the two groups of vertical main support rods 1 and the two ends of the transverse main support rods 2 are fixedly connected, the first oblique support rod 3 and the second vertical rod 5 are both installed on the transverse main support rod 2, the two ends of the third oblique support rod 7 are respectively fixedly connected to the transverse main support rod 2 and the first oblique support rod 3, one end of the first vertical rod 4 is installed on the first oblique support rod 3, and the two ends of the other group of transverse main support rods 2 are installed to the upper parts of the two groups of vertical main support rods 1, so that the transverse main support rod 2 is respectively fixedly connected to the first oblique support rod 3 and the first vertical rod 4, and the other vertical main support rods 1, transverse main support rods 2, first oblique support rods 3, first vertical rods 4, second vertical rods 5, second oblique support rods 6 and third oblique support rods 7 are fixedly installed in turn, and the first oblique support rod 3, first vertical rod 4, second vertical rod 5, second oblique support rod 6 and third oblique support rod 7 divide the internal structure between the transverse main support rod 2 and the vertical main support rod 1 into several triangles.

[0042] Embodiment 4

[0043] Reference Figure 1 - Figure 6, combining Example 1 and Example 2 to obtain this embodiment.

[0044] The vertical main support rod 1, the transverse main support rod 2, the first oblique support rod 3, the first vertical rod 4, the second vertical rod 5, the second oblique support rod 6 and the third oblique support rod 7 are fixedly installed to form a grid body, the first ceiling connecting frame 15, the second ceiling connecting frame 16 and the first ceiling plate layer form a first ceiling structure, the first connecting frame 11, the second connecting frame 14 and the second ceiling plate layer 17 are assembled into a second ceiling structure, and the first electric slide rail 8, the second electric slide rail 12, the first slider 10 and the second slider 13 control the second ceiling structure. When the shed structure overlaps with the first ceiling structure, the gymnasium roof is opened; when the second ceiling structure is combined with the first ceiling structure, the gymnasium roof is closed; the sealing belt 18 can pass through the sealing performance between the two groups of second ceiling panels 17; the air pump 21, the high-pressure air flow channel 19 and the air outlet 20 cooperate to control several groups of sealing strips 22 to separate from the first electric slide rail 8 and the second electric slide rail 12 respectively, thereby reducing the wear of the sealing strip 22; when the air pump 21 is turned off, the sealing strip 22 is reset, thereby achieving an effective waterproof effect.

[0045] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A steel structure grid for gymnasium roof, characterized in that: It includes a grid body arranged on the roof of a gymnasium and an adjusting mechanism arranged on the grid body; The grid body comprises a plurality of groups of vertical main body support rods (1), transverse main body support rods (2) vertically connected to the vertical main body support rods (1), and a plurality of groups of support structures arranged between the vertical main body support rods (1) and the transverse main body support rods (2); The adjustment mechanism comprises a first electric slide rail (8) detachably mounted on the upper end of the transverse main body support rod (2), a second electric slide rail (12) arranged on one side of the first electric slide rail (8), a first ceiling structure detachably fixedly arranged below the first electric slide rail (8) and the second electric slide rail (12), and a second ceiling structure movably arranged between the first electric slide rail (8) and the second electric slide rail (12); The first ceiling structure may be arranged to overlap or be combined with the second ceiling structure.

2. The steel structure grid for gymnasium roof according to claim 1, characterized in that: The first ceiling structure comprises a first ceiling connecting frame (15) detachably mounted between two groups of transverse main body support rods (2), a second ceiling connecting frame (16) arranged on one side of the first ceiling connecting frame (15), and a first ceiling board layer detachably mounted on the upper ends of the first ceiling connecting frame (15) and the second ceiling connecting frame (16).

3. The steel structure grid for gymnasium roof according to claim 2, characterized in that: The first electric slide rail (8) and the second electric slide rail (12) are both provided with a slide rail slot (9); the slide rail slot (9) on the first electric slide rail (8) is provided with a first slider (10) detachably connected to the second ceiling structure; and the slide rail slot (9) on the second electric slide rail (12) is provided with a second slider (13) detachably connected to the second ceiling structure.

4. The steel structure grid for gymnasium roof according to claim 3 is characterized in that: The second ceiling structure comprises a first connecting frame 1 (1) arranged between a plurality of groups of the first sliding blocks (10), a second connecting frame (14) arranged between a plurality of groups of the second sliding blocks (13), and a second ceiling board layer (17) respectively laid on the upper end of the first connecting frame (11) and the upper end of the second connecting frame (14); the second ceiling board layer (17) can be movably arranged above the first ceiling board layer, and a plurality of groups of the second ceiling board layers (17) and a plurality of groups of the first ceiling board layers can be installed in an inclined manner.

5. The steel structure grid for gymnasium roof according to claim 4, characterized in that: The first electric slide rail (8) and the second electric slide rail (12) are both provided with a sealing assembly, the sealing assembly comprising a sealing strip (22) movably arranged on the inner top surface of the slide rail groove (9), a plurality of groups of high-pressure airflow channels (19) respectively installed in the first electric slide rail (8) and the second electric slide rail (12), an air outlet (20) arranged on one side of the sealing strip (22) and connected to the high-pressure airflow channel (19), and a plurality of groups of air pumps (21) respectively detachably installed at the lower ends of the first electric slide rail (8) and the second electric slide rail (12) and transporting gas to the high-pressure airflow channel (19).

6. The steel structure grid for gymnasium roof according to claim 5, characterized in that: The two ends of the second ceiling plate layer (17) extend into the inner side of the first electric slide rail (8) and the second electric slide rail (12) respectively; the lower end surface of the sealing strip (22) is detachably connected to the upper end surface of the second ceiling plate layer (17); the sealing strip (22) gradually moves away from the inside of the first electric slide rail (8) and the second electric slide rail (12) along the height direction, and the thickness gradually decreases; the air outlet (20) is tiltedly aligned with the upper end of the sealing strip (22); the sealing strip (22) is configured to be made of elastic material; the air pump (21) separates the sealing strip (22) from the inner top surface of the slide rail groove (9) through the high-pressure air flow channel (19) and the air outlet (20).

7. The steel structure grid for gymnasium roof according to claim 6, characterized in that: A sealing belt (18) is provided on the upper end surface of the second ceiling board layer (17) on the second connecting frame (14), and the sealing belt (18) is connected to the lower end surface of the second ceiling board layer (17) on the first connecting frame (11).

8. The steel structure grid for gymnasium roof according to claim 1, characterized in that: The support structure comprises a first oblique support rod (3) obliquely and cross-arranged on the inner side of the grid body and a first vertical rod (4) vertically arranged in the grid body, the two ends of the first oblique support rod (3) are respectively fixedly connected to two groups of transverse main body support rods (2), the top end of the first vertical rod (4) is vertically connected to the transverse main body support rod (2), and the bottom end of the first vertical rod (4) is fixedly connected to the first oblique support rod (3).

9. The steel structure grid for gymnasium roof according to claim 8, characterized in that: The support structure further comprises a plurality of groups of second vertical rods (5) arranged between the first oblique support rod (3) and the transverse main support rod (2) below the vertical main support rod (1), and a plurality of second oblique support rods (6) arranged between the first oblique support rod (3) and the first vertical rod (4); two groups of the second vertical rods (5) and two groups of the second oblique support rods (6) are respectively arranged on both sides of the first vertical rod (4); the top ends of the second vertical rods (5) are fixedly connected to the first oblique support rod (3), and the bottom ends of the second vertical rods (5) are vertically fixed to the transverse main support rod (2).

10. The steel structure grid for gymnasium roof according to claim 9, characterized in that: A third oblique support rod (7) is installed on one side of the second vertical rod (5). The other end of the third oblique support rod (7) is fixedly connected to the transverse main support rod (2). The two groups of third oblique support rods (7) are symmetrically arranged on both sides of the first vertical rod (4).

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