Steel structure building fireproof door convenient to open and close

Abstract

The utility model discloses a steel structure building fireproof door convenient to open and close, belongs to the technical field of steel structure building equipment, and is convenient to open and close. According to the technical scheme, the top end of the front side of a door frame is fixedly connected with a horizontally-placed supporting plate, a hydraulic cylinder is arranged above the supporting plate, the rear end of a cylinder body of the hydraulic cylinder is connected with a vertical rotating shaft, the lower end of the rotating shaft is rotationally connected with the supporting plate, and the front end of a hydraulic push rod of the hydraulic cylinder is connected with a vertical door body push rod; a mounting plate is arranged on the upper portion of the rear end of the door frame, the rear ends of a plurality of buffer sleeves are fixedly connected with the plate face of the mounting plate, springs are mounted in the buffer sleeves, the front ends of the springs are connected with buffer columns, and the front ends of the buffer columns extend out of the buffer sleeves to be opposite to the door body. The fireproof door is simple in structure, the door body can be opened or closed through the hydraulic cylinder, people can quickly escape or rescue, and meanwhile the fireproof door is not prone to deformation or even collapse due to impact.

Description

Technical Field

[0001] The utility model relates to a steel structure fireproof door used in steel structure buildings, belonging to the technical field of steel structure building equipment. Background Art

[0002] Steel structure building is a new type of building structure, breaking through the industry boundaries between real estate, construction and metallurgy, and becoming a new industrial system. Compared with traditional concrete buildings, steel structure buildings use steel plates or steel sections to replace reinforced concrete, which has higher strength and better earthquake resistance. This new steel structure building is generally favored by people in many industries.

[0003] Steel structure fire doors are needed in steel structure buildings. The existing steel structure fire doors have the following shortcomings in actual use: First, when a fire occurs, the fire door will be burned by the fire, resulting in a high temperature of the fire door, so that people cannot push the door to escape in the first time or rescue personnel cannot rescue in the first time, which poses a certain threat to people's safety; second, the existing fire doors use heavy steel structures. When a fire occurs, it is easy to explode in the building, making the fire door easy to bear a large impact force, thus causing the fire door to collapse as a whole. Therefore, it is very necessary to improve the existing steel structure fire doors. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a steel structure building fire door which is convenient to open and close. The fire door can be opened or closed automatically, so that people or rescue workers can escape or enter the room at the first time and be rescued in time when a fire occurs. At the same time, the fire door can absorb and reduce the impact force on the door body, avoid deformation or even collapse of the fire door due to impact, and increase the service life of the fire door.

[0005] The technical solution to solve the above technical problems is:

[0006] A steel structure building fireproof door which is convenient to open and close, comprising a door frame and a door body. The door frame is a rectangular frame, which is installed in a passage, and is fixedly connected to the four walls of the passage. The door body is a steel plate frame structure, and the door body and the door frame are rotatably connected by an upper rotating shaft and a lower rotating shaft. The improvement is that a horizontally placed supporting plate is fixedly connected to the top of the front side of the door frame, and a hydraulic cylinder is arranged above the supporting plate. The rear end of the cylinder body of the hydraulic cylinder is connected to the vertical rotating shaft, and the lower end of the rotating shaft is rotatably connected to the supporting plate. The front end of the hydraulic push rod of the hydraulic cylinder is connected to the vertical door The door body is connected to the push rod, the lower end of the door body push rod is rotatably connected to the connecting block, the rear end of the connecting block is fixed at the front of the door body, and there is a mounting plate on the upper rear end of the door frame. The mounting plate is a rectangular plate, and the plate surface of the mounting plate is vertical. The two ends of the mounting plate in the length direction are respectively fixedly connected to the two sides of the door frame, and there are multiple buffer sleeves between the plate surface of the mounting plate and the back of the door body. The rear end of the buffer sleeve is fixedly connected to the plate surface of the mounting plate, and a spring is installed in the buffer sleeve. The front end of the spring is connected to the buffer column, and the front end of the buffer column extends out of the buffer sleeve and is opposite to the rear surface of the door body.

[0007] The above-mentioned steel structure building fire door which is easy to open and close has a vertical rotating shaft hole at the rear of the support plate at the top end of the front side of the door frame, the diameter of the rotating shaft connected to the rear end of the hydraulic cylinder body matches the diameter of the rotating shaft hole, the bottom surface of the rotating shaft hole is closed, the lower part of the rotating shaft is inserted into the rotating shaft hole of the support plate, the lower part of the rotating shaft is rotatably matched with the rotating shaft hole, the lower end surface of the rotating shaft contacts the bottom surface of the rotating shaft hole, and the rotating shaft is supported by the bottom surface of the rotating shaft hole.

[0008] The above-mentioned steel structure building fire door which is easy to open and close has a vertical rotating hole on the connecting block, and the door body push rod connected to the front end of the hydraulic push rod of the hydraulic cylinder is a straight rod. The diameter of the door body push rod matches the diameter of the rotating hole of the connecting block, and the lower part of the door body push rod is inserted into the rotating hole of the connecting block, and the lower part of the door body push rod is rotatably matched with the rotating hole.

[0009] The above-mentioned steel structure building fire door which is easy to open and close, the buffer sleeve is a sleeve with a closed rear end, the front end of the buffer sleeve is connected with an annular clamping ring, the inner hole diameter of the clamping ring is smaller than the inner hole diameter of the buffer sleeve, a spring and a buffer column are placed in the inner cavity of the buffer sleeve, the rear end of the spring is against the bottom surface of the buffer sleeve, the buffer column is placed at the front end of the spring, the buffer column is composed of a cylinder and a bottom plate, the bottom plate is connected to the rear end of the cylinder, the diameter of the bottom plate matches the inner hole diameter of the buffer sleeve, the diameter of the cylinder matches the inner hole diameter of the clamping ring, the bottom plate is located in the inner cavity of the buffer sleeve, the upper edge of the bottom plate is against the rear end of the clamping ring, the front end of the cylinder extends out of the inner hole of the clamping ring, and the front end face of the cylinder is opposite to the rear surface of the door body.

[0010] The above-mentioned steel structure building fire door which is easy to open and close, the door body is composed of a steel rectangular frame and a steel plate, the steel plates are welded to the front and back of the door body frame respectively, a support frame is arranged inside the door body frame, the two ends of the support frame are respectively welded to the inner side of the door body frame, and the two side surfaces of the support frame are respectively welded to the steel plates at the front and back of the door body.

[0011] The beneficial effects of the utility model are:

[0012] The front top support plate of the door frame of the utility model is rotatably connected with the rear end of the hydraulic cylinder, and the hydraulic cylinder can rotate an angle on the support plate to push the door body to rotate; the front end of the hydraulic push rod of the hydraulic cylinder is rotatably connected with the connecting block on the door body, and the hydraulic push rod can be extended to open the door body through the connecting block; multiple buffer sleeves are installed at the upper end of the door frame, and the buffer columns at the front ends of the springs in the multiple buffer sleeves extend out of the buffer sleeves and face the rear of the door body. When the door body is closed, the buffer columns and the springs play a buffering role on the door body.

[0013] The utility model has a simple structure and is easy to use. The door body can be opened or closed by a hydraulic cylinder, so that when a fire occurs, people or rescue workers in the passage can escape or enter the passage at the first time, so that people can be rescued at the first time; at the same time, the buffer device can absorb and reduce the impact force on the fire door when an explosion occurs in the passage, so that the fire door is not easily deformed or even collapsed by the impact, thereby increasing the service life of the fire door and protecting people's safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 A partial enlarged view of

[0016] Figure 3 Schematic diagram of the structure of the buffer sleeve;

[0017] Figure 4 yes Figure 1 Rear view of

[0018] Figure 5 yes Figure 1 A top view of a cross section;

[0019] Figure 6 It is a schematic diagram of the support frame structure inside the door body.

[0020] The markings in the figure are as follows: door frame 1, door body 2, upper rotating shaft 3, lower rotating shaft 4, support plate 5, hydraulic cylinder 6, hydraulic push rod 7, rotating shaft 8, connecting block 9, door body push rod 10, mounting plate 11, buffer sleeve 12, retaining ring 13, spring 14, buffer column 15, cylinder 16, base plate 17, support frame 18, door lock 19. DETAILED DESCRIPTION

[0021] The utility model is composed of a door frame 1, a door body 2, an upper rotating shaft 3, a lower rotating shaft 4, a supporting plate 5, a hydraulic cylinder 6, a hydraulic push rod 7, a rotating shaft 8, a connecting block 9, a door body push rod 10, a mounting plate 11, a buffer sleeve 12, a supporting frame 18 and a door lock 19.

[0022] Figure 1 , 2 6 show that the door frame 1 is a steel rectangular frame, which is installed in the passage and fixedly connected to the four walls of the passage. The door body 2 is composed of a steel rectangular frame and a steel plate. The steel plates are welded to the front and back of the frame of the door body 2 respectively. The door body 2 and the door frame 1 are rotatably connected by the upper rotating shaft 3 and the lower rotating shaft 4. There is a support frame 18 in the frame of the door body 2. The two ends of the support frame 18 are respectively welded to the inner side of the frame of the door body 2, and the two side surfaces of the support frame 18 are respectively welded to the steel plates in the front and back of the door body 2. A door lock 19 is also installed on the door body 1.

[0023] Figure 1 , 2 It is shown that a horizontally placed support plate 5 is fixedly connected to the top of the front side of the door frame 1, and a hydraulic cylinder 6 is arranged above the support plate 5. The rear end of the cylinder body of the hydraulic cylinder 6 is connected to a vertical rotating shaft 8, and the lower end of the rotating shaft 8 is rotatably connected to the support plate 5. A vertical rotating shaft hole is arranged at the rear of the support plate 5. The diameter of the rotating shaft 8 connected to the rear end of the cylinder body of the hydraulic cylinder 6 matches the diameter of the rotating shaft hole. The bottom surface of the rotating shaft hole is closed. The lower part of the rotating shaft 8 is inserted into the rotating shaft hole of the support plate 5. The lower part of the rotating shaft 8 is rotatably matched with the rotating shaft hole. The lower end surface of the rotating shaft 8 is in contact with the bottom surface of the rotating shaft hole, and the rotating shaft 8 is supported by the bottom surface of the rotating shaft hole. The rotating shaft 8 rotates in the rotating shaft hole of the support plate 5, which can drive the hydraulic cylinder 6 to swing with the rotating shaft 8 as the fulcrum. The support plate 5 supports the hydraulic cylinder 6.

[0024] Figure 1 , 2 It is shown that the front end of the hydraulic push rod 7 of the hydraulic cylinder 6 is connected to the vertical door push rod 10, the lower end of the door push rod 10 is rotatably connected to the connecting block 9, and the rear end of the connecting block 9 is fixed in front of the door body 2. There is a vertical rotation hole on the connecting block 9, the door push rod 10 is a straight rod, the diameter of the door push rod 10 matches the diameter of the rotation hole of the connecting block 9, the lower part of the door push rod 10 is inserted into the rotation hole of the connecting block 9, and the lower part of the door push rod 10 is rotatably matched with the rotation hole. When the hydraulic push rod 7 of the hydraulic cylinder 6 is extended, the door body 2 can be pushed to rotate outward through the connecting block 9 to open the door body 2.

[0025] Figure 3 , 45 shows that a mounting plate 11 is provided at the upper rear end of the door frame 1. The mounting plate 11 is a rectangular plate, the plate surface of the mounting plate 11 is vertical, and the two ends of the mounting plate 11 in the length direction are fixedly connected to the two sides of the door frame 1. There are a plurality of buffer sleeves 12 between the plate surface of the mounting plate 11 and the rear of the door body 2. The rear end of the buffer sleeve 12 is fixedly connected to the plate surface of the mounting plate 11, and the front end of the buffer sleeve 12 is opposite to the rear surface of the door body 2. When the door body 2 is closed, the buffer sleeve 12 plays a buffering role for the door body 2.

[0026] Figure 3 It is shown that the front end of the buffer sleeve 12 is connected with an annular snap ring 13, the inner hole diameter of the snap ring 13 is smaller than the inner hole diameter of the buffer sleeve 12, and the snap ring 13 is welded or bolted to the front end face of the buffer sleeve 12. A spring 14 and a buffer column 15 are placed in the inner cavity of the buffer sleeve 12, the rear end of the spring 14 is pressed against the bottom surface of the buffer sleeve 12, and the buffer column 15 is placed at the front end of the spring 14. The buffer column 15 is composed of a cylinder 16 and a bottom plate 17, the bottom plate 17 is connected to the rear end of the cylinder 16, the diameter of the bottom plate 17 matches the inner hole diameter of the buffer sleeve 12, the diameter of the cylinder 16 matches the inner hole diameter of the snap ring 13, the bottom plate 17 is located in the inner cavity of the buffer sleeve 12, the upper edge of the bottom plate 17 is pressed against the rear end of the snap ring 13, the front end of the cylinder 16 extends out of the inner hole of the snap ring 13, and the front end face of the cylinder 16 is opposite to the rear surface of the door body 2.

[0027] The use process of the utility model is as follows:

[0028] When the door body 2 needs to be opened, the hydraulic cylinder 6 is started, and the hydraulic push rod 7 of the hydraulic cylinder 6 extends forward, pushing the connecting block 9 forward, and the connecting block 9 drives the door body 2 to rotate, and the door body 2 begins to open. At this time, the hydraulic push rod 7 also gives the hydraulic cylinder 6 a reverse action, and the hydraulic cylinder 7 rotates a certain angle with the rotating shaft 8 on the supporting plate 4 as the fulcrum, so that the hydraulic push rod 7 further drives the connecting block 9 to move to the left front, so that the door body 2 rotates and opens;

[0029] When the door body 2 needs to be closed, the hydraulic cylinder 6 is reversed, and the hydraulic push rod 7 of the hydraulic cylinder 6 is retracted, so that the door body 2 is rotated and closed;

[0030] When an explosion occurs, the impact force will be transmitted to the support frame 19 through the door body 2, so that part of the impact force can be absorbed, and the remaining impact force is transmitted to the buffer sleeve 12. The buffer column 15 of the buffer sleeve 12 moves backward to squeeze the spring 14 to produce elastic deformation, thereby generating a reaction force and offsetting the impact force, so that most of the impact force is absorbed, thereby reducing the impact force on the fire door, making it less likely for the fire door to be deformed or even collapsed by the impact, thereby increasing the service life of the fire door and protecting people's safety.

[0031] An embodiment of the present utility model is as follows:

[0032] The thickness of door frame 1 is 90mm, the external height is 2050mm, the width is 950mm, the internal height is 2005mm, and the width is 905mm;

[0033] The length of the door body 2 is 2000 mm, the width is 900 mm, and the thickness is 22 mm;

[0034] The diameter of the upper rotating shaft 3 and the lower rotating shaft 4 is 3 mm and the length is 100 mm;

[0035] The support plate 5 has a length of 120 mm, a width of 80 mm, a thickness of 20 mm, a diameter of the rotating shaft hole of 40 mm, and a length of 20 mm;

[0036] The model of hydraulic cylinder 6 is XDHA12-1000;

[0037] The diameter of the rotating shaft 8 is 39 mm and the length is 60 mm;

[0038] The length of the connecting block 9 is 80 mm, the width is 50 mm, the thickness is 40 mm, and the diameter of the rotating hole is 40 mm;

[0039] The door push rod 10 has a diameter of 39 mm and a length of 100 mm;

[0040] The length of the mounting plate 11 is 2005 mm, the width is 100 mm, and the thickness is 20 mm;

[0041] The buffer sleeve 12 has an outer diameter of 40 mm, an inner diameter of 37 mm, and a length of 40 mm;

[0042] The inner diameter of the clamping ring 13 is 31 mm and the thickness is 3 mm;

[0043] The spring 14 has a diameter of 1 mm and a length of 36 mm;

[0044] The diameter of the cylinder 16 of the buffer column 15 is 36 mm and the length is 40 mm. The diameter of the bottom plate 17 is 36 mm and the thickness is 3 mm.

Claims

1. A fireproof door for a steel structure building which is convenient to open and close, comprising a door frame (1) and a door body (2), wherein the door frame (1) is a rectangular frame, the door frame (1) is installed in a passage, the door frame (1) is fixedly connected to the four walls of the passage, the door body (2) is a steel plate frame structure, the door body (2) and the door frame (1) are rotatably connected by an upper rotating shaft (3) and a lower rotating shaft (4), and is characterized in that: A horizontally placed support plate (5) is fixedly connected to the top of the front side of the door frame (1), a hydraulic cylinder (6) is provided above the support plate (5), a rear end of the cylinder body of the hydraulic cylinder (6) is connected to a vertical rotating shaft (8), a lower end of the rotating shaft (8) is rotatably connected to the support plate (5), a front end of a hydraulic push rod (7) of the hydraulic cylinder (6) is connected to a vertical door push rod (10), a lower end of the door push rod (10) is rotatably connected to a connecting block (9), a rear end of the connecting block (9) is fixed to the front of the door body (2), a mounting plate (11) is provided at the upper portion of the rear end of the door frame (1), and a mounting plate (11) is provided at the upper portion of the rear end of the door frame (1). The mounting plate (11) is a rectangular plate. The plate surface of the mounting plate (11) is vertical. The two ends of the mounting plate (11) in the length direction are respectively fixedly connected to the two sides of the door frame (1). A plurality of buffer sleeves (12) are arranged between the plate surface of the mounting plate (11) and the rear of the door body (2). The rear end of the buffer sleeve (12) is fixedly connected to the plate surface of the mounting plate (11). A spring (14) is installed in the buffer sleeve (12). The front end of the spring (14) is connected to the buffer column (15). The front end of the buffer column (15) extends out of the buffer sleeve (12) and faces the rear surface of the door body (2).

2. The steel structure building fire door that is easy to open and close according to claim 1 is characterized by: A vertical rotation axis hole is provided at the rear of the support plate (5) at the top end of the front side of the door frame (1); the diameter of the rotation axis (8) connected to the rear end of the cylinder body of the hydraulic cylinder (6) matches the diameter of the rotation axis hole; the bottom surface of the rotation axis hole is closed; the lower part of the rotation axis (8) is inserted into the rotation axis hole of the support plate (5); the lower part of the rotation axis (8) is rotationally matched with the rotation axis hole; the lower end surface of the rotation axis (8) contacts the bottom surface of the rotation axis hole; and the rotation axis (8) is supported by the bottom surface of the rotation axis hole.

3. The steel structure building fire door that is easy to open and close according to claim 1 is characterized by: The connecting block (9) is provided with a vertical rotation hole. The door push rod (10) connected to the front end of the hydraulic push rod (7) of the hydraulic cylinder (6) is a straight rod. The diameter of the door push rod (10) matches the diameter of the rotation hole of the connecting block (9). The lower part of the door push rod (10) is inserted into the rotation hole of the connecting block (9), and the lower part of the door push rod (10) is rotationally matched with the rotation hole.

4. The steel structure building fire door that is easy to open and close according to claim 1 is characterized by: The buffer sleeve (12) is a sleeve with a closed rear end. The front end of the buffer sleeve (12) is connected to an annular clamping ring (13). The inner diameter of the clamping ring (13) is smaller than the inner diameter of the buffer sleeve (12). A spring (14) and a buffer column (15) are placed in the inner cavity of the buffer sleeve (12). The rear end of the spring (14) is pressed against the bottom surface of the buffer sleeve (12). The buffer column (15) is placed on the front end of the spring (14). The buffer column (15) is composed of a cylindrical body (16) and a bottom plate (17). The bottom plate (17) is connected to the rear end of the cylinder (16), the diameter of the bottom plate (17) matches the inner diameter of the buffer sleeve (12), the diameter of the cylinder (16) matches the inner diameter of the clamping ring (13), the bottom plate (17) is located in the inner cavity of the buffer sleeve (12), the upper edge of the bottom plate (17) is against the rear end of the clamping ring (13), the front end of the cylinder (16) extends out of the inner hole of the clamping ring (13), and the front end surface of the cylinder (16) is opposite to the rear surface of the door body (2).

5. The steel structure building fire door that is easy to open and close according to claim 1 is characterized by: The door body (2) is composed of a steel rectangular frame and steel plates. The steel plates are welded to the front and rear of the frame of the door body (2). A support frame (18) is arranged inside the frame of the door body (2). The two ends of the support frame (18) are respectively welded to the inner side of the frame of the door body (2). The two side surfaces of the support frame (18) are respectively welded to the steel plates at the front and rear of the door body (2).

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