CN216766968U - Steel construction for coal storage shed - Google Patents
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- CN216766968U CN216766968U CN202123204259.2U CN202123204259U CN216766968U CN 216766968 U CN216766968 U CN 216766968U CN 202123204259 U CN202123204259 U CN 202123204259U CN 216766968 U CN216766968 U CN 216766968U
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Abstract
The invention relates to a steel structure for a coal storage shed, which comprises a supporting foundation and a truss structure arranged on the supporting foundation, wherein the truss structure comprises N1 arched trusses and N2 longitudinal trusses, and the longitudinal trusses and the arched trusses are welded to form N1N 2 connection points ZH; the left lower part and the right lower part of the arch truss are respectively provided with a steel cable connecting node ZG, the adjacent steel cable connecting nodes ZG are connected through a side main steel cable, and the left lower end and the right lower end are respectively provided with a steel cable connecting node ZD; the adjacent connecting nodes ZH form a rectangular array A, the adjacent connecting nodes ZH and the steel cable connecting nodes ZG form a rectangular array B, and the adjacent steel cable connecting nodes ZG and the steel cable connecting nodes ZD form a rectangular array C; the opposite angles of each matrix are connected through a diagonal steel cable; the 1 st arch truss and the N1 th arch truss are connected with the supporting foundation through a plurality of steel cables in a diagonal drawing way. The steel structure of the technical scheme is matched with the PVC membrane cloth for use, the structural stability is good, the manufacturing cost is low, and the construction period is short.
Description
Technical Field
The invention relates to the technical field of steel structures, in particular to a steel structure for a coal storage shed.
Background
In order to meet the requirement of environmental protection, coal mining sites need to be sealed and stored, and correspondingly, closed coal mining sites need to be built.
Coal storage sheds in the prior art generally have two forms, one is steel structure type, and the other is air film type.
Both of the above structures have their own drawbacks:
(1) the steel construction is traditional architectural steel structure form, because the restriction of shrouding production specification, the beam column sets up densely, and the cost is high, and the period is long, and the maintenance cost is high.
(2) The gas film type coal storage shed needs to continuously inflate the gas film, needs to be provided with a special air compressor and a power supply, has large resource consumption, has short service life and is easy to be damaged accidentally, needs to be replaced after the gas film is aged or damaged, and has high maintenance and replacement cost.
Therefore, a coal storage shed with stable structure, short construction period, low cost and high reliability is urgently needed in coal yards.
Disclosure of Invention
The invention aims to solve the technical problem of making up the defects of the prior art and provides a steel structure for a coal storage shed.
To solve the technical problems, the technical scheme of the invention is as follows:
a steel structure for a coal storage shed comprises a supporting foundation and a truss structure, wherein the truss structure is arranged on the supporting foundation through a connecting structure;
the truss structure comprises N1 arched trusses and N2 longitudinal trusses, wherein N1 arched trusses are sequentially arranged from front to back at a certain interval, N2 longitudinal trusses are arranged from left to right at a certain interval, and each longitudinal truss is welded with N1 arched trusses to form N1N 2 connection points ZH;
the left lower parts and the right lower parts of the N1 arched trusses are respectively provided with a steel cable connecting node ZG, and the adjacent steel cable connecting nodes ZG are connected through a side main steel cable; the steel cable connecting node ZG at the lower left part of the arched truss is positioned between the lower left end of the arched truss and the 1 st longitudinal truss; the steel cable connecting node ZG at the lower right part of the arched truss is positioned between the lower right end of the arched truss and the Nth 2 th longitudinal truss;
the left lower ends and the right lower ends of the N1 arched trusses are respectively provided with a steel cable connecting node ZD;
the adjacent connecting nodes ZH form a rectangular array A, the adjacent connecting nodes ZH and the steel cable connecting nodes ZG form a rectangular array B, and the adjacent steel cable connecting nodes ZG and the steel cable connecting nodes ZD form a rectangular array C; the opposite angles of the rectangular array A, the rectangular array B and the rectangular array C are connected through a diagonal steel cable;
the 1 st arched truss is connected with the support foundation through a plurality of front longitudinal steel cables, and the connection point of the front longitudinal steel cables and the support foundation is positioned in front of the 1 st arched truss; the N1 th arched truss is connected with the support foundation through a plurality of rear longitudinal steel cables, and the connection point of the rear longitudinal steel cables and the support foundation is positioned behind the N1 th arched truss.
Furthermore, the truss structure further comprises a pair of streamline trusses arranged behind the N1 th arch truss, the pair of streamline trusses are symmetrically arranged relative to the bilateral symmetry plane of the arch truss, the top ends of the streamline trusses are welded with the N1 th arch truss, and the bottom ends of the streamline trusses are arranged on the supporting base through the connecting structure.
Furthermore, a lower strengthening truss and an upper strengthening truss are welded between the streamline truss and the Nth 1 th arch truss, and a connecting truss is welded between the strengthening truss and the upper strengthening truss.
Further, the connection structure is: the connection parts of the truss structures and the supporting foundation are provided with anti-seismic supports, the anti-seismic supports are fixedly connected with embedded steel plates, and the embedded steel plates are pre-embedded in the supporting foundation.
Furthermore, the anti-seismic support comprises an upper support plate, a stainless steel plate, a planar sliding plate, a spherical lining plate, a spherical sliding plate and a lower support plate, wherein a conical groove with a lower opening is formed in the bottom of the upper support plate, the opening of the conical groove is small in diameter, and the top of the conical groove is large in diameter; the upper support plate is matched with the lower support plate through a conical surface; the spherical lining plate is arranged between the upper support plate and the lower support plate; the plane sliding plate is arranged between the top of the spherical lining plate and the top of the conical groove of the upper support plate, and the lower part of the plane sliding plate is embedded into the spherical lining plate; the stainless steel plate is arranged between the top of the spherical lining plate and the top of the conical groove of the upper support plate, surrounds the periphery of the planar sliding plate and is fixedly connected with the spherical lining plate; the spherical sliding plate is arranged between the spherical lining plate and the lower support plate, and part of the spherical sliding plate is embedded into the lower support plate; the planar sliding plate and the spherical sliding plate are both made of modified ultrahigh molecular weight polyethylene.
Furthermore, the supporting foundation comprises a ring beam and a plurality of concrete columns for supporting the ring beam, concrete is poured into a whole at the joint J of the ring beam and the concrete columns, the ring beam comprises a front part of the ring beam, a rear part of the ring beam, a left part of the ring beam and a right part of the ring beam, the embedded steel plates are arranged at the corresponding joint J, and a coal blocking wall or an entrance and an exit are arranged between the adjacent concrete columns.
Further, the connection mode of the front longitudinal steel cable and the rear longitudinal steel cable with the supporting foundation is as follows: the lower ends of the front longitudinal steel cable and the rear longitudinal steel cable are hinged with an ear plate A through a cable joint A, and the ear plate A is welded and fixed on the embedded steel plate; the connection mode of the diagonal steel cable and the truss structure is as follows: the two ends of the diagonal steel cable are hinged with the ear plates B through cable joints B, and the ear plates B are welded on the truss structure.
Furthermore, the arched trusses and the longitudinal trusses are formed by welding pipes.
Further, the number N1 of the arched trusses is 6, and the number N2 of the longitudinal trusses is 3.
Furthermore, the left lower end and the right lower end of the 1 st arch truss are connected through a front transverse steel lock, the front longitudinal steel cable is divided into a front upper longitudinal steel cable and a front lower longitudinal steel cable, and the front upper longitudinal steel cable and the front lower longitudinal steel cable are connected with the front transverse steel lock.
The invention can achieve the following beneficial effects:
(1) the span between the arch trusses and the span between the longitudinal trusses are not limited by the production specification of covering materials, and can keep larger span under the condition of meeting the integral strength and rigidity, so that the construction cost is low, the construction workload is less, the construction period is short, and the reliability is high.
(2) The arrangement of the steel cables enables the structural stability of the whole steel cable truss to be better.
(3) The coal storage tank is matched with the PVC membrane cloth for use, is used for storing coal after being covered with the PVC membrane cloth, has better waterproofness and low maintenance cost.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a front view of an embodiment of the present invention;
FIG. 3 is a side view of an embodiment of the present invention;
FIG. 4 is a top view of an embodiment of the present invention;
FIG. 5 is a front view of an arched truss in an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of an arched truss and a longitudinal truss in an embodiment of the invention;
FIG. 7 is a schematic cross-sectional view of an embedded steel plate in a supporting base according to an embodiment of the present invention;
FIG. 8 is a schematic top view illustrating the pre-embedding of pre-embedded steel plates in a supporting foundation according to an embodiment of the present invention;
FIG. 9 is a schematic view of the connection of the arched truss to the support base in an embodiment of the present invention;
FIG. 10 is a front cross-sectional view of a seismic mount in an embodiment of the invention;
FIG. 11 is a top view of a seismic mount in an embodiment of the invention;
FIG. 12 is a main schematic view of the connection of the front and rear longitudinal cables to the support base according to the embodiment of the present invention;
FIG. 13 is a top view of the connection of the front and rear longitudinal cables to the support base in an embodiment of the present invention;
FIG. 14 is a schematic view of the connection between the stayed cables and the truss structure according to the embodiment of the invention;
FIG. 15 is a top view of the connection between the stayed cables and the truss structure according to the embodiment of the present invention;
FIG. 16 is a schematic view of the connection of the front upper longitudinal cable, the front lower longitudinal cable and the front cross steel lock according to the embodiment of the present invention;
in the figure: 1-concrete column, 2-concrete cross brace, 3-concrete diagonal brace, 4-ring beam left part, 5-left longitudinal truss, 6-side main steel cable, 7-diagonal steel cable, 8-rear arch truss, 9-streamline truss, 10-middle longitudinal truss, 11-front lower longitudinal steel cable, 12-front cross steel lock, 13-ring beam front part, 14-front arch truss, 15-middle arch truss, 16-lower reinforced truss, 17-connecting truss, 18-upper reinforced truss, 19-right longitudinal truss, 20-embedded steel plate, 21-steel bar and 22-shear resisting plate; 23-an anti-seismic support, 231-an upper support plate, 232-a stainless steel plate, 233-a plane sliding plate, 234-a spherical lining plate, 235-a spherical sliding plate and 236-a lower support plate; 24-socket A, 25-ear plate A, 26-front upper longitudinal steel cable, 27-rear longitudinal steel cable, 28-bolt, 29-nut, 30-ring beam right part, 31-ring beam rear part, 32-butt joint ear seat, 33-socket B, 34-ear plate B.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1 to 4, a steel structure for a coal storage shed comprises a supporting base and a truss structure, wherein the truss structure is arranged on the supporting base through a connecting structure, and the height from the top of the truss structure to the ground is 39 meters.
The supporting foundation comprises a ring beam and a plurality of concrete columns 1 for supporting the ring beam, the height of the ring beam from the ground is 10.5 m, a connecting joint J of the ring beam and the concrete columns 1 is formed by pouring concrete, and the ring beam comprises a ring beam front part 13, a ring beam rear part 31, a ring beam left part 4 and a ring beam right part 30; the peripheral dimension of the ring beam is 150 meters in length from front to back and 105 meters in width from left to right; the concrete diagonal bracing 3 is arranged on the outer side of the concrete column 1, the concrete cross brace 2 is arranged between the concrete column 1 and the concrete diagonal bracing 3, the concrete column 1, the concrete diagonal bracing 3 and the concrete cross brace 2 form a stable triangular support, so that the stability of a support foundation is better, and a coal blocking wall or an access is arranged between the adjacent concrete columns 1.
The truss structure comprises 6 arched trusses and 3 longitudinal trusses, wherein the arched trusses and the longitudinal trusses are formed by welding pipes, the front view of the arched trusses is shown in figure 5, and the sections of the arched trusses and the longitudinal trusses are shown in figure 6. The pipe wall of the steel pipe is generally thin, the turning radius of the cross section is large, so the pressure resistance and the torsion resistance are good, the material is saved, the contact surface area of the steel pipe and the atmosphere is small, the protection is easy, the rod pieces at the joints are directly welded, dead angles and grooves which are difficult to clean, paint, accumulate moisture and a large amount of dust do not exist, the maintenance is more convenient, and the interior of the pipe-shaped member is difficult to rust after the whole length and the end part of the pipe-shaped member are closed, thereby being beneficial to rust prevention and clean maintenance. The 6 arched trusses are sequentially arranged from front to back at an array distance of 21.5 meters, the 1 st arched truss is called a front arched truss 14, the 6 th arched truss is called a rear arched truss 8, and the middle 4 arched trusses are all called middle arched trusses 15; the 3 longitudinal trusses are arranged from left to right, the transverse distance is 22 meters, the 3 longitudinal trusses are a left longitudinal truss 5, a middle longitudinal truss 10 and a right longitudinal truss 19 respectively, and each longitudinal truss is welded with the 6 arched trusses to form 18 connecting points ZH.
The left lower part and the right lower part of each of the 6 arched trusses are respectively provided with a steel cable connecting node ZG, and adjacent steel cable connecting nodes ZG are connected through a side main steel cable 6; the steel cable connecting node ZG at the left lower part of the arched truss is positioned between the left lower end of the arched truss and the left longitudinal truss 5; the steel cable connecting node ZG at the right lower part of the arch truss is positioned between the right lower end of the arch truss and the right longitudinal truss 19;
the left lower end and the right lower end of each of the 6 arched trusses are respectively provided with a steel cable connecting node ZD;
the adjacent connecting nodes ZH form a rectangular array A, the adjacent connecting nodes ZH and the steel cable connecting nodes ZG form a rectangular array B, and the adjacent steel cable connecting nodes ZG and the steel cable connecting nodes ZD form a rectangular array C; the opposite angles of the rectangular array A, the rectangular array B and the rectangular array C are connected through a diagonal steel cable 7;
the front arched truss 14 is connected with the support foundation through a plurality of front longitudinal steel cables, and the connection point of the front longitudinal steel cables and the support foundation is positioned in front of the front arched truss 14; the left lower end and the right lower end of the front arched truss 14 are connected through a front transverse steel lock 12, the front longitudinal steel cable is divided into a front upper longitudinal steel cable 26 and a front lower longitudinal steel cable 11, the front upper longitudinal steel cable 26 and the front lower longitudinal steel cable 11 are both connected with the front transverse steel lock 12, the connecting structure is shown in fig. 16, a pair of butt-joint lug seats 32 are fixed on the front transverse steel lock 12 through bolts 28 and nuts 29 face to face, the lower end of the front upper longitudinal steel cable 26 and the upper end of the front lower longitudinal steel cable 11 are both hinged with the corresponding butt-joint lug seats 32, and the included angle between the front upper longitudinal steel cable 26 and the front lower longitudinal steel cable 11 is 152 degrees. The rear arched truss 8 is connected with the support foundation through a plurality of rear longitudinal steel cables 27, and the connection points of the rear longitudinal steel cables 27 and the support foundation are positioned behind the rear arched truss 8. The connection of the front and rear longitudinal cables 27 to the support foundation is shown in fig. 12 and 13: the lower ends of the front longitudinal steel cable and the rear longitudinal steel cable 27 are hinged with an ear plate A25 through a cable joint A24, and the ear plate A25 is welded and fixed on the embedded steel plate 20; the connection of the stayed cables 7 to the truss structure is shown in fig. 14 and 15: the two ends of the stayed cable 7 are hinged with the ear plate B34 through a cable joint B33, and the ear plate B34 is welded on the truss structure.
The truss structure further comprises a pair of streamline trusses 9 arranged behind the rear arch truss 8, the streamline trusses 9 are symmetrically arranged relative to the bilateral symmetry plane of the arch truss, the top ends of the streamline trusses 9 are welded with the rear arch truss 8, and the bottom ends of the streamline trusses 9 are arranged on a supporting base through the connecting structure; a lower strengthening truss 16 and an upper strengthening truss 18 are welded between the streamline truss 9 and the rear arch truss 8, and a connecting truss 17 is welded between the strengthening truss 16 and the upper strengthening truss 18. Due to the arrangement of the streamline truss 9, the windward resistance can be effectively reduced, so that the wind resistance of the truss structure is enhanced.
The connection structure specifically comprises: the joints of the truss structures and the supporting foundation are provided with anti-seismic supports 23, the anti-seismic supports 23 are welded and fixed with embedded steel plates 20, the embedded steel plates 20 are embedded in the supporting foundation, as shown in fig. 7 and 8, a plurality of J-shaped steel bars 21 are welded on the embedded steel plates 20, a plurality of shear resisting plates 22 are welded below the embedded steel plates 20, and the J-shaped steel bars 21 and the shear resisting plates 22 are poured in the supporting foundation. The embedded steel plates 20 are all arranged at the corresponding connection joints J.
The specific structure of the anti-seismic support 23 is shown in fig. 10 and 11: the steel wire truss structure comprises an upper support plate 231, a stainless steel plate 232, a plane sliding plate 233, a spherical lining plate 234, a spherical sliding plate 235 and a lower support plate 236, wherein the upper support plate 231 is fixedly connected with the steel wire truss structure, and the lower support plate 236 is fixedly connected with an embedded steel plate 20; the bottom of the upper support plate 231 is provided with a conical groove with a lower opening, the opening of the conical groove is small, and the top of the conical groove is large; the upper support plate 231 is matched with the lower support plate 236 through a conical surface; the spherical liner 234 is disposed between the upper seat plate 231 and the lower seat plate 236; the plane sliding plate 233 is arranged between the top of the spherical lining plate 234 and the top of the tapered slot of the upper support plate 231, and the lower part of the plane sliding plate 233 is embedded in the spherical lining plate 234; the stainless steel plate 232 is arranged between the top of the spherical lining plate 234 and the top of the tapered slot of the upper support plate 231, surrounds the periphery of the planar sliding plate 233, and is fixedly connected with the spherical lining plate 234; the spherical sliding plate 235 is arranged between the spherical lining plate 234 and the lower support plate 236, and a part of the spherical sliding plate 235 is embedded into the lower support plate 236; the planar sliding plate 233 and the spherical sliding plate 235 are both made of modified ultra-high molecular weight polyethylene, and the high molecular weight polyethylene has excellent self-lubricating property.
In the description of the present invention, words such as "inner", "outer", "upper", "lower", "front", "rear", etc., indicating orientations or positional relationships, are used for convenience in describing the present invention, and do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The above description is only one embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a steel construction for coal storage shed, characterized by: the truss structure is arranged on the supporting foundation through a connecting structure;
the truss structure comprises N1 arched trusses and N2 longitudinal trusses, wherein N1 arched trusses are sequentially arranged from front to back at a certain interval, N2 longitudinal trusses are arranged from left to right at a certain interval, and each longitudinal truss is welded with N1 arched trusses to form N1N 2 connection points ZH;
the left lower parts and the right lower parts of the N1 arched trusses are respectively provided with a steel cable connecting node ZG, and the adjacent steel cable connecting nodes ZG are connected through a side main steel cable (6); the steel cable connecting node ZG at the lower left part of the arched truss is positioned between the lower left end of the arched truss and the 1 st longitudinal truss; the steel cable connecting node ZG at the lower right part of the arched truss is positioned between the lower right end of the arched truss and the Nth 2 th longitudinal truss;
the left lower ends and the right lower ends of the N1 arched trusses are respectively provided with a steel cable connecting node ZD;
the adjacent connecting nodes ZH form a rectangular array A, the adjacent connecting nodes ZH and the steel cable connecting nodes ZG form a rectangular array B, and the adjacent steel cable connecting nodes ZG and the steel cable connecting nodes ZD form a rectangular array C; the opposite angles of the rectangular array A, the rectangular array B and the rectangular array C are connected through a diagonal steel cable (7);
the 1 st arched truss is connected with the support foundation through a plurality of front longitudinal steel cables, and the connection point of the front longitudinal steel cables and the support foundation is positioned in front of the 1 st arched truss; the N1 th arched truss is connected with the supporting foundation through a plurality of rear longitudinal steel cables (27), and the connection point of the rear longitudinal steel cables (27) and the supporting foundation is positioned behind the N1 th arched truss.
2. The steel structure for a coal storage shed as claimed in claim 1, wherein: the truss structure further comprises a pair of streamline trusses (9) arranged behind the N1 th arch truss, the streamline trusses (9) are symmetrically arranged relative to the bilateral symmetry plane of the arch truss, the top end of the streamline truss (9) is welded with the N1 th arch truss, and the bottom end of the streamline truss (9) is arranged on the supporting base through the connecting structure.
3. The steel structure for a coal storage shed as claimed in claim 2, wherein: a lower strengthening truss (16) and an upper strengthening truss (18) are welded between the streamline truss (9) and the Nth 1 th arch truss, and a connecting truss (17) is welded between the strengthening truss (16) and the upper strengthening truss (18).
4. The steel structure for a coal storage shed as claimed in claim 1 or 2, wherein: the connecting structure is as follows: the connection part of the truss structure and the supporting foundation is provided with an anti-seismic support (23), the anti-seismic support (23) is fixedly connected with an embedded steel plate (20), and the embedded steel plate (20) is embedded in the supporting foundation.
5. The steel structure for a coal storage shed as claimed in claim 4, wherein: the anti-seismic support (23) comprises an upper support plate (231), a stainless steel plate (232), a plane sliding plate (233), a spherical lining plate (234), a spherical sliding plate (235) and a lower support plate (236), wherein a conical groove with a lower opening is formed in the bottom of the upper support plate (231), the opening of the conical groove is small in diameter, and the top of the conical groove is large in diameter; the upper support plate (231) is matched with the lower support plate (236) through a conical surface; the spherical lining plate (234) is arranged between the upper support plate (231) and the lower support plate (236); the plane sliding plate (233) is arranged between the top of the spherical lining plate (234) and the top of the tapered slot of the upper support plate (231), and the lower part of the plane sliding plate (233) is embedded into the spherical lining plate (234); the stainless steel plate (232) is arranged between the top of the spherical lining plate (234) and the top of the tapered slot of the upper support plate (231), surrounds the periphery of the planar sliding plate (233), and is fixedly connected with the spherical lining plate (234); the spherical sliding plate (235) is arranged between the spherical lining plate (234) and the lower support plate (236), and one part of the spherical sliding plate (235) is embedded into the lower support plate (236); the planar sliding plate (233) and the spherical sliding plate (235) are both made of modified ultrahigh molecular weight polyethylene.
6. The steel structure for a coal storage shed as claimed in claim 4, wherein: the support basis includes a plurality of concrete columns (1) of ring beam and support ring beam, and the ring beam is concrete placement as an organic whole with the connected node J of concrete column (1), and the ring beam includes that ring beam is anterior (13), ring beam rear portion (31), ring beam left part (4) and ring beam right part (30), pre-buried steel sheet (20) all set up in corresponding connected node J department, are used for setting up between adjacent concrete column (1) and keep off coal wall or access & exit.
7. The steel structure for a coal storage shed as defined in claim 4, wherein: the connection mode of the front longitudinal steel cable and the rear longitudinal steel cable (27) with the supporting foundation is as follows: the lower ends of the front longitudinal steel cable and the rear longitudinal steel cable (27) are hinged with an ear plate A (25) through a cable joint A (24), and the ear plate A (25) is welded and fixed on the embedded steel plate (20); the connection mode of the diagonal steel cable (7) and the truss structure is as follows: two ends of the diagonal steel cable (7) are hinged with the ear plate B (34) through a cable joint B (33), and the ear plate B (34) is welded on the truss structure.
8. The steel structure for a coal storage shed as claimed in claim 1, wherein: the arched truss and the longitudinal truss are formed by welding pipes.
9. The steel structure for a coal storage shed as claimed in claim 1, wherein: the number N1 of the arched trusses is 6, and the number N2 of the longitudinal trusses is 3.
10. The steel structure for a coal storage shed as claimed in claim 1, wherein: the left lower extreme and the right lower extreme of 1 st arch truss link to each other through preceding horizontal steel lock (12), preceding indulge the cable wire divide into preceding upper vertical cable wire (26) and preceding lower vertical cable wire (11), preceding upper vertical cable wire (26) and preceding lower vertical cable wire (11) all link to each other with preceding horizontal steel lock (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123204259.2U CN216766968U (en) | 2021-12-20 | 2021-12-20 | Steel construction for coal storage shed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123204259.2U CN216766968U (en) | 2021-12-20 | 2021-12-20 | Steel construction for coal storage shed |
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| CN216766968U true CN216766968U (en) | 2022-06-17 |
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| CN202123204259.2U Active CN216766968U (en) | 2021-12-20 | 2021-12-20 | Steel construction for coal storage shed |
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| CN (1) | CN216766968U (en) |
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