Steel structure movable threshold double-leaf air-tight door

Abstract

The utility model discloses a steel structure movable doorsill double-leaf air-tight door which comprises two symmetrically-arranged door plates, fixing columns are symmetrically installed on one sides of the top end faces and one sides of the bottom end faces of the door plates, fixing sleeves are arranged outside the fixing columns in a sleeved mode, and handles are installed on the edges of the middles of the surfaces of the door plates. A lubricating assembly is arranged at the bottom of the surface of the side edge of the door plate and comprises an oil injection groove formed in the bottom of the surface of the side edge of the door plate, and oil conveying holes are formed in the surface of the bottom of the inner side of the oil injection groove at equal angles. Through the designed lubricating assembly, a worker can conveniently add lubricating oil between the fixing column and the fixing sleeve regularly, operation is simple and easy, the friction force between the fixing column and the fixing sleeve can be reduced, force output can be conveniently reduced when people rotate the airtight door, and practicability is good. And through the designed sealing assembly, the sealing performance of the air-tight door during closing can be improved conveniently, so that the protection function of the air-tight door can be further improved, and the practical effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of airtight doors for protection, and particularly to a double-leaf airtight door with a movable sill made of steel structure. Background Art

[0002] The airtight door for protection is arranged on the outermost side of the entrance and exit, and has two functions of blocking shock waves and isolating poisonous agents. The double-leaf airtight door with a movable sill made of steel structure is the main protection equipment for subway evacuation channels and fire channels, and is an integral part of the entire subway civil air defense project. Its main function is to isolate the inside and outside of the door to achieve airtightness, impermeability to poison, and prevention of radioactive dust from entering the door. The Chinese patent discloses a double-leaf airtight door with a movable sill made of steel structure (publication number CN211287250U), and the double-leaf airtight door has been elaborated in detail in this patent, so it will not be elaborated here. However, the existing double-leaf airtight door with a movable sill made of steel structure still has the following problems when in use: the weight of the door panel is relatively heavy, and the friction force between the fixed column and the fixed sleeve will increase after long-term use, which is not convenient for people to rotate the airtight door, and there are inconveniences during use, and there is certain room for improvement. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a double-leaf airtight door with a movable sill made of steel structure to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A double-leaf airtight door with a movable sill made of steel structure, including two symmetrically arranged door panels. On one side of the top surface and one side of the bottom surface of the door panel, fixed columns are symmetrically installed. The outside of the fixed column is sleeved with a fixed sleeve. A handle is installed at the middle edge of the surface of the door panel. A lubricating component is arranged at the bottom of the side surface of the door panel.

[0005] The lubricating component includes an oil injection groove opened at the bottom of the side surface of the door panel. Oil delivery holes are equally angled and opened on the inner bottom surface of the oil injection groove. One end opening of the oil delivery hole faces the top surface of the fixed sleeve. A sealing plug is arranged at the opening of the oil injection groove.

[0006] As a further preferred of this technical solution, a limiting ring groove is opened on the top surface of the two fixed sleeves at the bottom of the two door panels. The width of the opening of the limiting ring groove is greater than the inner diameter of one end opening of the oil delivery hole.

[0007] As a further preferred of this technical solution, a limiting sleeve ring is sleeved on the outside of the fixed column at the bottom of the door panel. A sponge strip is arranged inside the limiting sleeve ring. The limiting sleeve ring is located at the bottom of the fixed sleeve.

[0008] As a further preference of the technical solution, the inner diameter of the opening at one end of the limiting collar is equal to the surface diameter of the end of the fixed column, and the inner diameter of the opening at the other end of the limiting collar is greater than the surface diameter of the end of the fixed column.

[0009] As a further preference of the technical solution, a sealing assembly is provided at the connection of the two door panels. The sealing assembly includes mounting grooves symmetrically opened at the connection of the two door panels. An installation plate is arranged inside the mounting groove. Sealing strips are installed on the surfaces of the two installation plates. The surfaces of the two sealing strips are closely attached. Fixed grooves are symmetrically opened on the outer surfaces of the two door panels. A connection screw hole is opened on one inner wall of the fixed groove. An adjusting bolt is arranged inside the connection screw hole. One end of the adjusting bolt is connected to the installation plate.

[0010] As a further preference of the technical solution, sealing grooves are opened on the surfaces of the two sealing strips, and the sealing grooves are arranged in a staggered manner.

[0011] The utility model provides a double-leaf airtight door with a steel structure movable sill, which has the following beneficial effects:

[0012] 1. Through the designed lubrication assembly of the utility model, it is convenient for workers to regularly add lubricating oil between the fixed column and the fixed sleeve. It is simple and easy to operate, which can reduce the friction between the fixed column and the fixed sleeve, and is convenient for people to reduce the output of force when rotating the airtight door, and has good practicability.

[0013] 2. Through the designed sealing assembly of the utility model, it is convenient to improve the sealing performance of the airtight door when it is closed, so as to further improve the protection function of the sealed door, and has good practical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is a schematic diagram of the installation structure of the lubrication assembly in the utility model;

[0016] Figure 3 is Figure 2 an enlarged schematic diagram of area A in

[0017] Figure 4 is a schematic diagram of the installation structure of the sealing assembly in the utility model;

[0018] In the figure: 1, door panel; 2, fixed column; 3, fixed sleeve; 4, handle; 5, oil delivery hole; 6, limit ring groove; 7, sealing plug; 8, oil injection groove; 9, sponge strip; 10, limiting collar; 11, installation plate; 12, sealing strip; 13, fixed groove; 14, connection screw hole; 15, adjusting bolt; 16, installation groove. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0020] The technical solution provided by the present utility model is as follows: As Figure 1 、 Figure 2 and Figure 3 shown, in this embodiment, a double-leaf airtight door with a steel structure movable sill includes two symmetrically arranged door panels 1. On one side of the top surface and one side of the bottom surface of the door panel 1, fixed columns 2 are symmetrically installed. A fixed sleeve 3 is sleeved outside the fixed column 2. A handle 4 is installed at the middle edge of the surface of the door panel 1. A lubrication assembly is arranged at the bottom of the side surface of the door panel 1. The lubrication assembly includes an oil injection groove 8 opened at the bottom of the side surface of the door panel 1. Oil delivery holes 5 are equiangularly opened on the inner bottom surface of the oil injection groove 8. One end opening of the oil delivery hole 5 faces the top surface of the fixed sleeve 3. A limit ring groove 6 is opened on the top surface of the two fixed sleeves 3 at the bottom of the two door panels 1. The width of the opening of the limit ring groove 6 is greater than the inner diameter of the one end opening of the oil delivery hole 5. A sealing plug 7 is arranged at the opening of the oil injection groove 8. A limit sleeve ring 10 is sleeved outside the fixed column 2 at the bottom of the door panel 1. A sponge strip 9 is arranged inside the limit sleeve ring 10. The limit sleeve ring 10 is at the bottom of the fixed sleeve 3. The inner diameter of one end opening of the limit sleeve ring 10 is equal to the surface diameter of the end of the fixed column 2. The inner diameter of the other end opening of the limit sleeve ring 10 is greater than the surface diameter of the end of the fixed column 2, which is convenient for workers to add lubricating oil between the fixed sleeve 3 and the fixed column 2 for lubrication, can reduce the friction between the fixed column 2 and the fixed sleeve 3, is convenient for workers to rotate the airtight door, so that workers can reduce the output of force when pushing the airtight door, and has good practicability.

[0021] As Figure 1 and Figure 4 shown, a sealing assembly is arranged at the connection of the two door panels 1. The sealing assembly includes installation grooves 16 symmetrically opened at the connection of the two door panels 1. An installation plate 11 is arranged inside the installation groove 16. Sealing strips 12 are installed on the surfaces of the two installation plates 11. Sealing grooves are opened on the surfaces of the two sealing strips 12, and the sealing grooves are arranged in a staggered manner. The surfaces of the two sealing strips 12 are closely attached. Fixed grooves 13 are symmetrically opened on the outer surfaces of the two door panels 1. A connection screw hole 14 is opened on one inner wall of the fixed groove 13. An adjusting bolt 15 is arranged inside the connection screw hole 14. One end of the adjusting bolt 15 is connected to the installation plate 11, which is convenient for improving the sealing performance of the airtight door when it is closed, can further improve the protection function of the airtight door during use, and has good practical effects.

[0022] The utility model provides a double-leaf airtight door with a movable threshold made of steel structure, and the specific working principle is as follows: When the utility model needs to add lubricating oil between the fixed sleeves 3, first take out the sealing plug 7 from the opening of the oil injection groove 8, and then add lubricating oil into the interior of the oil injection groove 8. After the interior of the oil injection groove 8 is filled with an appropriate amount of lubricating oil, the sealing plug 7 can be plugged at the opening of the oil injection groove 8. At the same time, the lubricating oil inside the oil injection groove 8 will flow through the oil delivery hole 5 into the interior of the limit ring groove 6 on the top surface of the fixed sleeve 3 at the bottom of the door panel 1. At this time, the lubricating oil can flow into the interior of the fixed sleeve 3 and lubricate the surface of the fixed column 2, thereby reducing the friction between the surface of the fixed column 2 and the inner wall of the fixed sleeve 3 and facilitating people to rotate the two door panels 1. When the lubricating oil on the surface of the fixed column 2 slides off, the sponge strip 9 inside the limit sleeve ring 10 can absorb the sliding lubricating oil to avoid waste of lubricating oil, and the practicability is good. When the utility model needs to improve the sealing performance when the airtight door is closed, first insert the finger into the interior of the fixed groove 13 and hold one end of the adjusting bolt 15, so that the adjusting bolt 15 rotates inside the connecting screw hole 14. At the same time, the adjusting bolt 15 will push the mounting plate 11 to move inside the mounting groove 16 until the surfaces of the two sealing strips 12 are closely attached. At the same time, the sealing grooves formed on the surfaces of the two sealing strips 12 are arranged in a staggered manner, which is convenient for further improving the sealing performance when the airtight door is closed and also improves the protection function of the airtight door, and the practical effect is good.

[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-leaf closed door with a steel structure movable threshold, comprising two symmetrically arranged door panels (1), wherein fixing columns (2) are symmetrically mounted on one side of the top end surface and one side of the bottom end surface of the door panels (1), wherein a fixing sleeve (3) is mounted on the outside of the fixing columns (2), and a handle (4) is mounted on the middle edge of the surface of the door panels (1), characterized in that: A lubrication component is provided at the bottom of the side surface of the door panel (1); The lubrication assembly comprises an oil filling groove (8) provided at the bottom of the side surface of the door panel (1), the inner bottom surface of the oil filling groove (8) is provided with oil delivery holes (5) at equal angles, one end of the oil delivery hole (5) is opened toward the top end surface of the fixing sleeve (3), and a sealing plug (7) is provided at the opening of the oil filling groove (8).

2. The double-leaf airtight door with a steel structure movable threshold according to claim 1, characterized in that: The top surfaces of the two fixing sleeves (3) at the bottom of the two door panels (1) are provided with limiting ring grooves (6), and the width of the opening of the limiting ring grooves (6) is greater than the inner diameter of the opening of one end of the oil delivery hole (5).

3. The double-leaf airtight door with a steel structure movable threshold according to claim 1 is characterized by: A limiting collar (10) is provided on the outside of the fixing column (2) at the bottom of the door panel (1), a sponge strip (9) is provided on the inside of the limiting collar (10), and the limiting collar (10) is located at the bottom of the fixing sleeve (3).

4. The double-leaf airtight door with a steel structure movable threshold according to claim 3 is characterized by: The inner diameter of the opening at one end of the limiting collar (10) is equal to the diameter of the end surface of the fixing column (2), and the inner diameter of the opening at the other end of the limiting collar (10) is greater than the diameter of the end surface of the fixing column (2).

5. The double-leaf airtight door with a steel structure movable threshold according to claim 1 is characterized by: A sealing assembly is provided at the connection of the two door panels (1), and the sealing assembly includes a mounting groove (16) symmetrically opened at the connection of the two door panels (1), a mounting plate (11) is provided inside the mounting groove (16), sealing strips (12) are installed on the surfaces of the two mounting plates (11), and the surfaces of the two sealing strips (12) are tightly fitted, and fixing grooves (13) are symmetrically opened on the outer surfaces of the two door panels (1), and a connecting screw hole (14) is opened on the inner wall of one side of the fixing groove (13), and an adjusting bolt (15) is provided inside the connecting screw hole (14), and one end of the adjusting bolt (15) is connected to the mounting plate (11).

6. The double-leaf airtight door with a steel structure movable threshold according to claim 5, characterized in that: The surfaces of the two sealing strips (12) are both provided with sealing grooves, and the sealing grooves are provided in a staggered manner.

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