Double-leaf protective airtight door

Abstract

The utility model discloses a double-leaf protective air-tight door which comprises a door frame, two door plates which are symmetrically arranged left and right are hinged to the door frame, two U-shaped moving frames which are symmetrically arranged up and down are arranged on each door plate, a driving shaft which is rotationally connected to the door plates is arranged between the two U-shaped moving frames, a double-leaf cam is arranged on the driving shaft, and a hand wheel is arranged on the driving shaft. The U-shaped moving frame comprises a linkage rod extending left and right, the two ends of the linkage rod are each provided with a locking rod extending up and down, the locking rods are sleeved with guide sleeves which slide relatively and are arranged on the door plate, and one ends of the guide sleeves are provided with blocking pieces arranged on the locking rods. One end of the elastic piece abuts against the guide sleeve, the other end of the elastic piece abuts against the blocking piece, and a locking hole is formed in the door frame. According to the protective airtight door, the door frame is opened and closed through the two door plates which are symmetrically arranged left and right, the mass and the size of each door plate are reduced by half, opening and closing are more labor-saving and convenient, the overall function is complete, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense equipment, and more specifically, to a double-leaf protective closed door. Background Art

[0002] The protective closed door used in civil air defense equipment is large in size, and is made of a combination of concrete and steel structures. The door panel has a large mass. The protective closed door with a single door panel structure is difficult to open and close, and the overall effect is not good. Based on this, the utility model proposes a double-leaf protective closed door. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a double-leaf protective closed door.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model relates to a double-leaf protective closed door, including a door frame, two door panels symmetrically arranged in the left and right are hinged on the door frame, each of the door panels is provided with two U-shaped moving frames symmetrically arranged in the upper and lower parts, a driving shaft rotatably connected to the door panel is provided between the two U-shaped moving frames, a double-leaf cam for following is provided on the driving shaft, and a hand wheel for controlling the rotation is provided on the driving shaft;

[0005] The U-shaped movable frame includes a linkage rod extending left and right, and a locking rod extending up and down is respectively provided at both ends of the linkage rod. The locking rod is sleeved with a guide sleeve which slides relatively and is arranged on the door panel. The end of the guide sleeve close to the linkage rod is provided with a blocking member arranged on the locking rod. The locking rod is sleeved with an elastic member with one end abutting against the guide sleeve and the other end abutting against the blocking member. A locking hole for inserting the locking rod is opened on the door frame.

[0006] The utility model is further configured as follows: a positioning groove for partially embedding the double-leaf cam is provided on one side of the linkage rod facing the double-leaf cam.

[0007] The utility model is further configured as follows: the positioning groove is arranged at the central position of the linkage rod.

[0008] The utility model is further configured as follows: the locking rod and the linkage rod are an integrated structure.

[0009] The utility model is further configured as follows: the blocking member is in a circular ring shape, the blocking member is sleeved on the locking rod, and the blocking member is welded to the locking rod.

[0010] The utility model is further configured as follows: the elastic member is a compression spring.

[0011] To sum up, the utility model has the following beneficial effects: the double-leaf protective sealed door involved in the utility model adopts two double-leaf door panels arranged symmetrically on the left and right to open and close the door frame, the mass and volume of each door panel are halved, opening and closing are more labor-saving and convenient, the overall function is complete, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a partial structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0015] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0016] Example 1

[0017] See also Figure 1 and Figure 2 As shown, a double-leaf protective closed door involved in this embodiment includes a door frame 1, on which two door panels 2 are hingedly arranged in a left-right symmetrical manner, each of the door panels 2 is provided with two U-shaped moving frames symmetrically arranged in a top-bottom manner, and a driving shaft 3 rotatably connected to the door panels 2 is provided between the two U-shaped moving frames, and a double-leaf cam 4 for following is provided on the driving shaft 3, and a hand wheel 5 for controlling the rotation is provided on the driving shaft 3;

[0018] The U-shaped movable frame includes a linkage rod 6 extending left and right, and a locking rod 7 extending up and down is respectively provided at both ends of the linkage rod 6. A guide sleeve 8 is sleeved on the locking rod 7 and is provided on the door panel 1 for sliding relative to each other. The end of the guide sleeve 8 close to the linkage rod 6 is provided with a blocking member 9 provided on the locking rod. The blocking member 9 is in a circular ring shape and is sleeved on the locking rod 7. The blocking member 9 is welded to the locking rod 7. An elastic member 10 is sleeved on the locking rod 7, with one end abutting against the guide sleeve and the other end abutting against the blocking member. The elastic member 10 is a compression spring, and a locking hole 11 for inserting the locking rod is opened on the door frame 1.

[0019] Furthermore, the locking rod 7 and the linkage rod 6 are an integrated structure.

[0020] In this embodiment, first, the double-leaf cam 4 is as follows Figure 1 In the state shown, the U-shaped moving frame above the double-leaf cam 4 is in the lower position, the U-shaped moving frame below the double-leaf cam 4 is in the upper position, the locking rod 7 on the U-shaped moving frame is not inserted into the locking hole 11, and the door panel 2 is in the open state relative to the door frame 1. By holding the hand wheel 5 and rotating it 90°, the double-leaf cam 4 also rotates 90°, and the raised part of the cam pushes the two U-shaped moving frames sideways, the U-shaped moving frame above the double-leaf cam 4 moves up, and the U-shaped moving frame below the double-leaf cam 4 moves down, until the locking rod 7 is inserted into the locking hole 11, and the door panel 2 is in the closed state relative to the door frame 1.

[0021] The elastic member 10 cooperates with the blocking member 9 to realize automatic reset of the U-shaped movable frame.

[0022] Example 2

[0023] See also Figure 1 and Figure 2 As shown, the double-leaf protective closed door involved in this embodiment is further configured on the basis of Embodiment 1, wherein a positioning groove 12 for partially embedding the double-leaf cam is provided on the side of the linkage rod 6 facing the double-leaf cam 4; the positioning groove 12 is provided in the central position of the linkage rod 6.

[0024] In this embodiment, the positioning groove 12 is provided to play a role in positioning the double-leaf cam 4 after position conversion.

[0025] The double-leaf protective airtight door involved in the utility model adopts two double-leaf door panels which are arranged symmetrically on the left and right to open and close the door frame. The mass and volume of each door panel are halved, and the opening and closing are more labor-saving and convenient. The overall function is perfect and the practicability is strong.

[0026] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0027] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A double-leaf protective closed door, comprising a door frame, on which two door panels are hingedly arranged in a bilaterally symmetrical manner, characterized in that: Each of the door panels is provided with two U-shaped moving frames symmetrically arranged in an upper and lower manner, a driving shaft rotatably connected to the door panel is provided between the two U-shaped moving frames, a double-leaf cam for following movement is provided on the driving shaft, and a hand wheel for controlling rotation is provided on the driving shaft; The U-shaped movable frame includes a linkage rod extending left and right, and a locking rod extending up and down is respectively provided at both ends of the linkage rod. The locking rod is sleeved with a guide sleeve which slides relatively and is arranged on the door panel. The end of the guide sleeve close to the linkage rod is provided with a blocking member arranged on the locking rod. The locking rod is sleeved with an elastic member with one end abutting against the guide sleeve and the other end abutting against the blocking member. A locking hole for inserting the locking rod is opened on the door frame.

2. The double-leaf protective airtight door according to claim 1, characterized in that: A positioning groove for partially embedding the double-leaf cam is provided on one side of the linkage rod facing the double-leaf cam.

3. The double-leaf protective airtight door according to claim 2, characterized in that: The positioning groove is arranged at the central position of the linkage rod.

4. The double-leaf protective airtight door according to any one of claims 1 to 3, characterized in that: The locking rod and the linkage rod are an integrated structure.

5. The double-leaf protective airtight door according to claim 1, characterized in that: The blocking member is in a circular ring shape, is sleeved on the locking rod, and is welded to the locking rod.

6. The double-leaf protective airtight door according to claim 1, characterized in that: The elastic member is a compression spring.

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