CN111576732A - Ridge main beam fixing structure for refuge roof - Google Patents
Ridge main beam fixing structure for refuge roof Download PDFInfo
- Publication number
- CN111576732A CN111576732A CN202010429220.1A CN202010429220A CN111576732A CN 111576732 A CN111576732 A CN 111576732A CN 202010429220 A CN202010429220 A CN 202010429220A CN 111576732 A CN111576732 A CN 111576732A
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- China
- Prior art keywords
- roof
- plates
- sliding
- fixedly connected
- ridge
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses a ridge girder fixing structure for a refuge house roof, which comprises a ridge girder, wall plates, a first anti-seismic mechanism, a mounting plate, roof plates, vertical plates, reinforcing plates, a second anti-seismic mechanism and a protective mechanism, wherein the wall plates are fixedly connected to two ends of the bottom of the ridge girder, a plurality of first anti-seismic mechanisms are arranged between the ridge girder and the wall plates at equal intervals, the mounting plate with a cross-shaped structure is connected to two ends of the top of the ridge girder through screws, the invention has compact structure and strong practicability, can perform shock absorption treatment on the shaking generated between the ridge girder and the wall plates by arranging the anti-seismic mechanism between the wall plates and the wall plates, can perform shock absorption treatment on the shaking of the roof plates by arranging the roof mechanisms between the wall plates and the roof plates, and is provided with a rain blocking cover at the tops of the roof plates, can protect the screw that the shingle is connected, prevent that the rainwater from causing the erosion to it, and then influencing follow-up use.
Description
Technical Field
The invention belongs to the field of roof structures, and particularly relates to a ridge main beam fixing structure for a refuge roof.
Background
In the existing life, earthquake is a peculiar natural phenomenon, so that serious casualties are often caused, natural disasters such as fire disasters, flood disasters and the like can be caused, statistics shows that the earth generates more than five hundred and ten thousand times of earthquakes every year, China is taken as a multi-earthquake country and pays particular attention to disaster prevention and reduction work, and when the earthquake is prevented, most of response measures are taken to establish refuge.
However, most of the existing refugees are in a modularized form and need to be assembled for use, the roof structure is loose and has no good strength, meanwhile, the roof structure of the existing refugee is lack of an anti-seismic device, and the existing refugee is easy to shake after being impacted by an earthquake when being used, so that the roof of the refugee which is lack of the anti-seismic device is easy to damage and influence the use.
The invention content is as follows:
the present invention has been made to solve the above problems, and an object of the present invention is to provide a main ridge beam fixing structure for a shelter roof, which solves the problems mentioned in the background art.
In order to solve the above problems, the present invention provides a technical solution:
a ridge girder fixing structure for a refuge house roof comprises a ridge girder, wall plates, a first anti-seismic mechanism, a mounting plate, roof plates, vertical plates, reinforcing plates, a second anti-seismic mechanism and a protection mechanism, wherein the wall plates are fixedly connected to two ends of the bottom of the ridge girder, a plurality of first anti-seismic mechanisms are arranged at equal distances between the ridge girder and the wall plates, the mounting plate with an angle-shaped structure is connected to two ends of the top of the ridge girder through screws, the roof plates are connected to the top of the mounting plate through screws, the vertical plates are fixedly connected to the center of the top of the ridge girder, a plurality of reinforcing plates are fixedly connected between the outer sides of the vertical plates and the top of the ridge girder at equal intervals, and a plurality of second anti-seismic mechanisms are arranged between the top of the ridge girder, the bottom of the roof plates and the outer sides of the vertical plates and between two adjacent reinforcing plates, and a protection mechanism is arranged at the top of the vertical plate.
Preferably, the first anti-seismic mechanism comprises first sliding grooves, a plurality of first sliding grooves are uniformly arranged at two ends of the bottom of the ridge girder at equal intervals, first sliding rods are fixedly connected inside the first sliding grooves, first sliding blocks are slidably connected outside the first sliding rods, the first sliding blocks are slidably connected with the corresponding first sliding grooves, first return springs are fixedly connected between the outer sides of the first sliding blocks and the inner walls of the first sliding grooves and positioned outside the first sliding rods, first connecting rods are rotatably connected outside the first sliding blocks, second sliding grooves are respectively arranged on the inner walls of the wall boards and positioned below the first sliding grooves, second sliding rods are fixedly connected inside the second sliding grooves, second sliding blocks are slidably connected outside the second sliding rods and connected with the corresponding second sliding grooves, and one ends of the first connecting rods, far away from the first sliding blocks, are rotatably connected with the corresponding second sliding blocks, and a second return spring is fixedly connected between the outer side of the second sliding block and the inner wall of the second sliding chute and positioned on the outer side of the second sliding rod.
Preferably, the second anti-vibration mechanism comprises second connecting rods, a plurality of second connecting rods are rotatably connected to the bottom of the roof plate at equal intervals, a plurality of fixed plates are fixedly connected to two ends of the top of the ridge girder at equal intervals, a third slide rod is fixedly connected between each fixed plate and the outer side of the vertical plate, a third slide block is slidably connected to the outer side of each third slide rod, each third slide block is slidably connected to the top of the ridge girder, one end, away from the roof plate, of each second connecting rod is rotatably connected to the corresponding third slide block, and a third return spring is fixedly connected between the outer side of each third slide block and the outer side of the vertical plate and located on the outer side of each third slide rod.
Preferably, the protection mechanism comprises an installation block, the two sides of the top of the vertical plate are connected with the installation block through screws, the top of the roof plate extends into the corresponding installation block and is connected with the installation block through screws, the top of the roof plate and the outer side of the installation block are provided with limit grooves with long strip-shaped structures, the top of the vertical plate is fixedly connected with a plurality of limit posts at equal intervals, limit sleeves are sleeved on the outer sides of the limit posts, a rain cover is fixedly connected between the tops of the limit sleeves, and the two ends of the bottom of the rain cover extend into the corresponding limit grooves.
Preferably, the roof plate and the ridge main beam form a triangular structure.
Preferably, the angle of inclination of the top of the mounting plate is the same as the angle of inclination of the roof deck.
Preferably, the second connecting rods and the horizontal plane form an included angle of forty-five degrees.
Preferably, the ridge main beam, the roof plate, the vertical plate and the rain cover are all made of 304 stainless steel.
Preferably, the inner dimension of the mounting block is matched with the dimension of the roof plate.
The invention has the beneficial effects that: the anti-vibration mechanism is arranged between the ridge girder and the wall plate, so that the vibration of the ridge girder and the wall plate can be damped, the anti-vibration mechanism is also arranged between the wall plate and the roof plate, so that the vibration of the roof plate can be damped, and the rain cover is arranged at the top of the roof plate, so that the screws connected with the roof plate can be protected, the corrosion of rainwater to the roof plate can be prevented, and the subsequent use can be further influenced.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of the mounting plate construction of the present invention;
fig. 4 is an enlarged view of a portion a in fig. 2.
In the figure: 1. a roof main beam; 2. wall panels; 3. a first anti-seismic mechanism; 31. a first chute; 32. a first slide bar; 33. a first slider; 34. a first return spring; 35. a first connecting rod; 36. a second chute; 37. a second slide bar; 38. a second slider; 39. a second return spring; 4. mounting a plate; 5. a roof deck; 6. a vertical plate; 7. a reinforcing plate; 8. a second anti-seismic mechanism; 81. a second connecting rod; 82. a fixing plate; 83. a third slide bar; 84. a third slider; 85. a third return spring; 9. a protection mechanism; 91. mounting blocks; 92. a limiting groove; 93. a limiting column; 94. a limiting sleeve; 95. a rain cover.
The specific implementation mode is as follows:
as shown in fig. 1 to 4, the following technical solutions are adopted in the present embodiment:
example (b):
a ridge girder fixing structure for a refuge roof comprises a ridge girder 1, a wall plate 2, a first anti-seismic mechanism 3, a mounting plate 4, a roof plate 5, a vertical plate 6, a reinforcing plate 7, a second anti-seismic mechanism 8 and a protection mechanism 9, wall plates 2 are fixedly connected with both ends of the bottom of the ridge girder 1, a plurality of first anti-seismic mechanisms 3 are arranged between the ridge girder 1 and the wall plates 2 at equal distances, two ends of the top of the ridge main beam 1 are connected with a mounting plate 4 with an angle structure through screws, the top of the mounting plate 4 is connected with a roof plate 5 through screws, the center of the top of the ridge girder 1 is fixedly connected with a vertical plate 6, a plurality of reinforcing plates 7 are fixedly connected between the outer side of the vertical plate 6 and the top of the ridge main beam 1 at equal intervals, the reinforcing plate 7 is used for facilitating the better increase of the connection stability between the ridge main beam 1 and the vertical plate 6; and a plurality of second anti-seismic mechanisms 8 are arranged between the top of the ridge main beam 1, the bottom of the roof plate 5 and the outer side of the vertical plate 6 and between two adjacent reinforcing plates 7, and a protection mechanism 9 is arranged at the top of the vertical plate 6.
Wherein, the first anti-seismic mechanism 3 comprises a first sliding chute 31, a plurality of first sliding chutes 31 are drilled at equal distances at two ends of the bottom of the ridge girder 1, first sliding rods 32 are fixedly connected inside the first sliding chutes 31, first sliding blocks 33 are slidably connected outside the first sliding rods 32, the first sliding blocks 33 are slidably connected with the corresponding first sliding chutes 31, first return springs 34 are fixedly connected between the outside of the first sliding blocks 33 and the inner wall of the first sliding chutes 31 and outside the first sliding rods 32, first connecting rods 35 are rotatably connected outside the first sliding blocks 33, second sliding chutes 36 are drilled on the inner wall of the wall panel 2 and below the first sliding chutes 31, second sliding rods 37 are fixedly connected inside the second sliding chutes 36, second sliding blocks 38 are slidably connected outside the second sliding rods 37, and second sliding blocks 38 are slidably connected with the corresponding second sliding chutes 36, and the end of the first connecting rod 35 far away from the first sliding block 33 is rotatably connected with the corresponding second sliding block 38, a second return spring 39 is fixedly connected between the outer side of the second sliding block 38 and the inner wall of the second sliding groove 36 and positioned on the outer side of the second sliding rod 37, and the first anti-vibration mechanism 3 is used for better damping the vibration between the ridge main beam 1 and the wall plate 2.
Wherein, the second anti-seismic mechanism 8 comprises a second connecting rod 81, the bottom of the roof slab 5 is connected with a plurality of second connecting rods 81 in an equidistance manner, two ends of the top of the ridge girder 1 are fixedly connected with a plurality of fixing plates 82 in an equidistance manner, a third slide bar 83 is fixedly connected between each fixing plate 82 and the outer side of the vertical slab 6, a third slide block 84 is connected with the outer side of each third slide bar 83 in a sliding manner, each third slide block 84 is connected with the top of the ridge girder 1 in a sliding manner, one end of each second connecting rod 81 far away from the roof slab 5 is connected with the corresponding third slide block 84 in a rotating manner, a third return spring 85 is fixedly connected between the outer side of each third slide block 84 and the outer side of the vertical slab 6 and positioned on the outer side of each third slide bar 83, and the second anti-seismic mechanism 8 is convenient for better damping the shake among the ridge girder 1, the vertical slab 6 and the roof slab 5, thereby enhancing the structural stability of the roof panel 5.
Wherein the protection mechanism 9 comprises a mounting block 91, the two sides of the top of the vertical plate 6 are both connected with the mounting block 91 through screws, the roof panels 5 each have a top portion extending into the corresponding mounting block 91 and are screwed to the mounting block 91, the top of the roof plate 5 and the outer side of the mounting block 91 are all cut with a limiting groove 92 with a long strip-shaped structure, the top of the vertical plate 6 is fixedly connected with a plurality of limiting columns 93 at equal intervals, the outer sides of the limiting columns 93 are sleeved with limiting sleeves 94, a rain cover 95 is fixedly connected between the tops of the limiting sleeves 94, both ends of the bottom of the rain cover 95 extend into the corresponding limiting grooves 92, through the matching between the limiting sleeve 94 and the limiting column 93, the position of the top of the rain shield cover 95 is better limited, meanwhile, the limiting grooves 92 are used for limiting the positions of two ends of the bottom of the rain cover 95.
The roof plates 5 and the ridge main beams 1 form a triangular structure, so that the stability of the whole roof structure is improved better.
The inclination angle of the top of the mounting plate 4 is the same as that of the roof plate 5, and the mounting plate 4 is convenient for better mounting and fixing the bottom of the roof plate 5.
Wherein, the second connecting rod 81 all personally submits forty-five degree contained angle with the horizontal plane, and the better assurance of being convenient for can carry out the shock attenuation to the power that receives of second connecting rod 81 through the elasticity of third return spring 85.
The ridge main beam 1, the roof plate 5, the vertical plate 6 and the rain shielding cover 95 are all made of 304 stainless steel, so that the strength of the whole structure of the equipment is improved better.
The size of the inside of the mounting block 91 is matched with the size of the roof plate 5, so that the top of the roof plate 5 can be mounted and fixed through the mounting block 91.
The using state of the invention is as follows: firstly, the equipment is assembled according to the figure 1 and is installed at the top position of a designated refuge, when the equipment is used, the equipment shakes due to an earthquake, when the ridge girder 1 shakes, the first sliding block 33 slides in the first sliding groove 31, namely slides on the outer side of the first sliding rod 32 under the action of the first connecting rod 35, meanwhile, the sliding of the first sliding block 33 can be buffered under the action of the first return spring 34, meanwhile, the first connecting rod 35 drives the second sliding block 38 to slide in the second sliding groove 36, namely slides on the outer side of the second sliding rod 37, so that the sliding of the second sliding block 38 is buffered under the action of the second return spring 39, the aim of shock absorption is achieved, in addition, when the roof plate 5 shakes, the third sliding block 84 is pushed to slide on the outer side of the third sliding rod 83 through the second connecting rod 81, thereby through the effect of third return spring 85, carry out shock attenuation processing to the slip of third slider 84, and then guarantee the stability between shingle 5 and the ridge girder 1, when the external thunderstorm weather that takes place, can shelter from the rainwater through rain cover 95 simultaneously, prevent that the rainwater from corroding the screw in the installation piece 91 outside to the normal use of equipment has been guaranteed.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a ridge girder fixed knot constructs for shelter from house roof, a serial communication port, including ridge girder (1), wallboard (2), first antidetonation mechanism (3), mounting panel (4), shingle (5), vertical board (6), reinforcing plate (7), second antidetonation mechanism (8) and protection machanism (9), the equal fixedly connected with wallboard (2) in both ends of ridge girder (1) bottom, impartial distance is provided with first antidetonation mechanism (3) of a plurality of between ridge girder (1) and wallboard (2), the both ends at ridge girder (1) top all have mounting panel (4) of "angle" style of calligraphy structure through the screw connection, the top of mounting panel (4) all has roof board (5) through the screw connection, the center fixedly connected with vertical board (6) at ridge girder (1) top, equidistance fixedly connected with a plurality of between the outside of vertical board (6) and the top of ridge girder (1) strengthens a plurality of fixedly connected with The roof structure comprises plates (7), a plurality of second anti-seismic mechanisms (8) are arranged between the top of the ridge girder (1), the bottom of the roof plate (5) and the outer sides of the vertical plates (6) and between two adjacent reinforcing plates (7), and protection mechanisms (9) are arranged at the top of the vertical plates (6).
2. The ridge girder fixing structure for the refuge roof according to claim 1, wherein the first anti-seismic mechanism (3) comprises a first sliding groove (31), a plurality of first sliding grooves (31) are equally spaced and chiseled at both ends of the bottom of the ridge girder (1), a first sliding rod (32) is fixedly connected inside each first sliding groove (31), a first sliding block (33) is slidably connected at the outer side of each first sliding rod (32), each first sliding block (33) is slidably connected with the corresponding first sliding groove (31), a first return spring (34) is fixedly connected between the outer side of each first sliding block (33) and the inner wall of each first sliding groove (31) and positioned at the outer side of each first sliding rod (32), a first connecting rod (35) is rotatably connected at the outer side of each first sliding block (33), a second sliding groove (36) is chiseled at the inner wall of the wall plate (2) and positioned below the first sliding groove (31), the equal fixedly connected with second slide bar (37) in inside of second spout (36), the equal sliding connection in outside of second slide bar (37) has second slider (38), second slider (38) all with corresponding second spout (36) sliding connection, just the one end that first slider (33) were kept away from in head rod (35) all rotates with corresponding second slider (38) to be connected, just be located the equal fixedly connected with second return spring (39) in outside of second slide bar (37) between the outside of second slider (38) and the inner wall of second spout (36).
3. The structure of claim 1, wherein the second anti-seismic mechanism (8) comprises a second connecting rod (81), a plurality of second connecting rods (81) are rotatably connected to the bottom of the roof plate (5) at equal intervals, a plurality of fixing plates (82) are fixedly connected to both ends of the top of the roof main beam (1) at equal intervals, a third sliding rod (83) is fixedly connected between the fixing plates (82) and the outer sides of the vertical plates (6), a third sliding block (84) is slidably connected to the outer side of the third sliding rod (83), the third sliding block (84) is slidably connected to the top of the roof main beam (1), one end of the second connecting rod (81) far away from the roof plate (5) is rotatably connected to the corresponding third sliding block (84), and one end of the third sliding block (84) is fixedly connected between the outer side of the vertical plate (6) and the outer side of the third sliding rod (83) A third return spring (85) is connected.
4. A ridge main beam fixing structure for a shelter roof according to claim 1, it is characterized in that the protection mechanism (9) comprises an installation block (91), the two sides of the top of the vertical plate (6) are connected with the installation block (91) through screws, the top of each roof plate (5) extends to the inside of the corresponding mounting block (91) and is connected with the mounting block (91) through a screw, limiting grooves (92) with long strip structures are drilled in the top of the roof plate (5) and positioned on the outer sides of the mounting blocks (91), the top of the vertical plate (6) is fixedly connected with a plurality of limiting columns (93) at equal intervals, the outer sides of the limiting columns (93) are sleeved with limiting sleeves (94), rain shielding covers (95) are fixedly connected between the tops of the limiting sleeves (94), and the two ends of the bottom of the rain cover (95) extend into the corresponding limiting grooves (92).
5. A roof main beam fixing structure for shelter roofs as claimed in claim 1, wherein said roof plates (5) and roof main beam (1) form a triangular structure.
6. A ridge main beam fixing structure for shelter roofs as claimed in claim 1, wherein the angle of inclination of the top of the mounting plate (4) is the same as the angle of inclination of the roof plate (5).
7. The roof main beam fixing structure for the shelter roof as claimed in claim 3, wherein the second connecting rods (81) form an included angle of forty-five degrees with the horizontal plane.
8. A roof main beam fixing structure for shelter roof as claimed in claim 4, wherein said roof main beam (1), roof plates (5), vertical plates (6) and rain cover (95) are all made of 304 stainless steel.
9. A ridge main beam fixing structure for shelter roofs as claimed in claim 4, wherein the inside dimensions of said mounting blocks (91) are all matched to the dimensions of roof plates (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010429220.1A CN111576732B (en) | 2020-05-25 | 2020-05-25 | Ridge main beam fixing structure for refuge roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010429220.1A CN111576732B (en) | 2020-05-25 | 2020-05-25 | Ridge main beam fixing structure for refuge roof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111576732A true CN111576732A (en) | 2020-08-25 |
| CN111576732B CN111576732B (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010429220.1A Expired - Fee Related CN111576732B (en) | 2020-05-25 | 2020-05-25 | Ridge main beam fixing structure for refuge roof |
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| Country | Link |
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| CN (1) | CN111576732B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681640A (en) * | 2020-12-24 | 2021-04-20 | 郑州航空工业管理学院 | Shock absorption and isolation device for assembled building stairs |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203008402U (en) * | 2012-11-15 | 2013-06-19 | 北京筑福国际工程技术有限责任公司 | Steel frame roof protecting structure for single-storey flush gable roof purlin brickwork residence |
| CN206844777U (en) * | 2017-03-31 | 2018-01-05 | 青建集团股份公司 | A kind of roof Anti-seismic building structure |
| CN208379791U (en) * | 2018-06-08 | 2019-01-15 | 沈华明 | A kind of earthquake-proof energy-saving environment-friendly type box type movable board house |
| CN208934225U (en) * | 2018-08-29 | 2019-06-04 | 王帅民 | A kind of building roof shockproof structure |
| CN212453276U (en) * | 2020-05-25 | 2021-02-02 | 黄颖 | High-strength roof structure of refuge shelter |
-
2020
- 2020-05-25 CN CN202010429220.1A patent/CN111576732B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203008402U (en) * | 2012-11-15 | 2013-06-19 | 北京筑福国际工程技术有限责任公司 | Steel frame roof protecting structure for single-storey flush gable roof purlin brickwork residence |
| CN206844777U (en) * | 2017-03-31 | 2018-01-05 | 青建集团股份公司 | A kind of roof Anti-seismic building structure |
| CN208379791U (en) * | 2018-06-08 | 2019-01-15 | 沈华明 | A kind of earthquake-proof energy-saving environment-friendly type box type movable board house |
| CN208934225U (en) * | 2018-08-29 | 2019-06-04 | 王帅民 | A kind of building roof shockproof structure |
| CN212453276U (en) * | 2020-05-25 | 2021-02-02 | 黄颖 | High-strength roof structure of refuge shelter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681640A (en) * | 2020-12-24 | 2021-04-20 | 郑州航空工业管理学院 | Shock absorption and isolation device for assembled building stairs |
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| CN111576732B (en) | 2021-09-24 |
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