High-strength anti-explosion civil air defense door

Abstract

The high-strength anti-explosion civil air defense door comprises a door frame, a hinge support and a door body, a first groove is formed in the bottom side of the door body, a clamping rod is fixedly connected in the first groove, a first clamping sleeve is connected to the clamping rod in a sleeved mode, a second clamping sleeve is connected to the bottom side of the first clamping sleeve in a sleeved mode, and a connecting frame is fixedly connected to the bottom end of the second clamping sleeve. A connecting frame is arranged on the bottom side of the door body, a supporting wheel is rotationally connected into the connecting frame through a rotating shaft, recesses are formed in the two sides of the supporting wheel, a limiting rod is fixedly connected to the upper end of the connecting frame, a spring is connected to the limiting rod in a sleeved mode, a protrusion is connected to the limiting rod in a sleeved mode, and the protrusion is fixedly connected to the bottom side of the first clamping sleeve. Movable support is provided for the side, away from the hinge support, of the door body, the friction force between the door body and the hinge support is reduced, therefore, the falling phenomenon of the door body is reduced, the opening and closing effect of the door body is improved, and meanwhile maintenance can be conveniently provided through the connecting frame and the supporting wheels which can be detached and replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of civil air defense, specifically relates to a high strength anti -explosion civil air defense door. BACKGROUND

[0002] The high strength civil air defense door is a civil air defense door with high strength and anti -explosion performance, usually installed at the entrance and exit of civil air defense engineering, and is used for resisting external explosion, shock wave and other dangerous factors, and guaranteeing people's life and property safety.

[0003] According to the "high strength concrete civil air defense door" of Chinese patent publication No. CN220955325U, the main description is that the connecting column is fixed on the frame, so that the connecting column can be poured together in the concrete when pouring concrete, the recess is formed on the door frame, the fixed column is fixedly arranged in the recess, the connecting column is sleeved on the fixed column, compared with the traditional hinge, the connecting mode improves the connecting strength between the door body and the door frame, helps to increase the overall structural strength of the concrete civil air defense door, is not prone to deformation after long time use, through the gear box, the driving gear and the driven gear can be protected from the solidification of concrete when pouring concrete, so that they can normally operate, the first shaft and the second shaft pass through the first pipeline and the second pipeline respectively, so that the first shaft and the second shaft are prevented from solidifying when pouring concrete.

[0004] The structure between the hinge support and the door body of the common civil air defense door will gradually rust under the influence of external environment after long time use, when the length of the door body is too long, the side of the door body away from the hinge support will produce the phenomenon of falling under the influence of the gravity of the door body, which affects the opening and closing of the door body.

[0005] Therefore, a high strength anti -explosion civil air defense door is proposed to solve the problem that part of the civil air defense door will produce the phenomenon of falling under the influence of the gravity of the door body after long time use, which leads to the aggravation of the friction between the door body and the hinge support and affects the opening and closing of the door body. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problem that part of the civil air defense door will produce the phenomenon of falling under the influence of the gravity of the door body after long time use, which leads to the aggravation of the friction between the door body and the hinge support and affects the opening and closing of the door body, and therefore proposes a high strength anti -explosion civil air defense door.

[0007] The utility model discloses a technical scheme that solves technical problems is: a kind of high-strength explosion-proof civil air defence door, including door frame, hinge support and door body, the first recess is set in the door body bottom side, the first recess is fixedly connected with clamping rod, the first recess is fixedly connected with the first clamping sleeve of clamping rod, the first clamping sleeve bottom side is sleeved with the second clamping sleeve, the second clamping sleeve bottom end is fixedly connected with the link frame, the link frame is rotatably connected with support wheel through the shaft in, the support wheel both sides are all set with recess, the link frame upper end is fixedly connected with the limiting rod, the limiting rod is sleeved with spring, the limiting rod is sleeved with protrusion, the protrusion is fixedly connected in the first clamping sleeve bottom side.

[0008] As a preferred technical scheme of the utility model, the link frame both sides are contacted with slide ball, the slide ball is contacted with the first recess, by setting slide ball, reduce the friction between link frame and the first recess when link frame is disassembled and installed.

[0009] As a preferred technical scheme of the utility model, the link frame upper end is threadedly connected with support rod, the support rod upper end is fixedly connected with link plate, the link plate is contacted with the first recess, by setting link plate and support rod, increase the stability that link frame is in the first recess.

[0010] As a preferred technical scheme of the utility model, the first recess is provided with adjusting ring, the adjusting ring is fixedly connected on the first clamping sleeve upper side, the section of the first clamping sleeve is triangular structure, by setting adjusting ring, can overlap first clamping sleeve and second clamping sleeve by the way of pressing, to facilitate the disassembly of link frame.

[0011] As a preferred technical scheme of the utility model, the link frame inner side is rotatably connected with link roller, the link roller is contacted with recess upper side, by setting link roller, can increase the contact with support wheel, disperse load, promote the stability when support wheel rotates.

[0012] The utility model has the following advantages: by setting the link frame and support wheel that can be installed and disassembled in the door body bottom side, mobile support is provided on the side of the door body away from the hinge support, the friction between the door body and the hinge support is reduced, thereby reducing the downward phenomenon of the door body, improving the opening and closing effect of the door body, and the link frame and support wheel can be disassembled and replaced, which can facilitate maintenance. ACCURACY OF DRAWINGS

[0013] Figure 1 It is a kind of high-strength explosion-proof civil air defence door's three-dimensional structure schematic diagram of preferred embodiment of the utility model;

[0014] Figure 2 It is the door body place front view structure schematic diagram of preferred embodiment of the utility model of a kind of high-strength explosion-proof civil air defence door;

[0015] Figure 3 This is a three-dimensional structural diagram of the connecting frame of a high-strength explosion-proof air defense door according to a preferred embodiment of the present invention;

[0016] Figure 4 This is an enlarged structural diagram of point A of a high-strength explosion-proof air defense door according to a preferred embodiment of the present invention;

[0017] Figure 5 This is a side sectional view of the connecting frame of a high-strength explosion-proof air defense door according to a preferred embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Door frame; 2. Hinge support; 3. Door body; 4. First groove; 5. Connecting frame; 6. Locking rod; 7. First locking sleeve; 8. Second locking sleeve; 9. Support wheel; 10. Connecting roller; 11. Limiting rod; 12. Sliding ball; 13. Support rod; 14. Connecting plate; 15. Adjusting ring. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Please refer to the following: Figures 1-5 The high-strength explosion-proof air-raid shelter door shown includes a door frame 1, a hinge support 2, and a door body 3. A first groove 4 is formed on the bottom side of the door body 3, and a locking rod 6 is fixedly connected within the first groove 4. Two locking rods 6 are provided to increase the stability of the connecting frame 5. The locking rod 6 connects with a first retaining sleeve 7, and in conjunction with the first groove 4, further increases the stability of the connecting frame 5. A first retaining sleeve 7 is sleeved on the locking rod 6, and a second retaining sleeve 8 is sleeved on the bottom side of the first retaining sleeve 7. Under the action of a limiting rod 11 and a spring, the first retaining sleeve 7 and the second retaining sleeve 8 can be moved away from each other. Combined with the locking rod 6, this allows the connecting frame 5 to engage with the door body. The connection between the body 3 is achieved by fixing a connecting frame 5 at the bottom of the second sleeve 8. A support wheel 9 is rotatably connected inside the connecting frame 5 via a pivot. By setting the support wheel 9 on the bottom side of the door body 3, the stability of the side of the door body 3 away from the hinge support 2 can be improved, preventing the door body 3 from falling under gravity. Recesses are provided on both sides of the support wheel 9. A limit rod 11 is fixedly connected to the upper end of the connecting frame 5. A spring is sleeved on the limit rod 11, and a protrusion is sleeved on the limit rod 11. The protrusion is fixedly connected to the bottom side of the first sleeve 7, which also makes the connecting frame 5 easy to disassemble and improves the convenience of maintenance.

[0021] The connecting frame 5 has a slider 12 on both sides, and the slider 12 contacts the first groove 4. By setting the slider 12, the adaptability of the connecting frame 5 is improved, and the friction between the first groove 4 and the connecting frame 5 is reduced when the connecting frame 5 is installed and disassembled.

[0022] The support rod 13 is threadedly connected to the upper end of the connecting frame 5, and the connecting plate 14 is fixedly connected to the upper end of the support rod 13 and is in contact with the first groove 4.

[0023] The adjusting ring 15 is arranged in the first groove 4 and is fixedly connected to the upper side of the first sleeve 7, and the cross section of the first sleeve 7 is triangular.

[0024] The connecting roller 10 is rotatably connected to the inner side of the connecting frame 5 and is in contact with the upper side of the recess, and the connecting roller 10 increases the contact points of the supporting wheel 9 and improves the stability of the rotation of the supporting wheel 9.

[0025] The working principle is that the first groove 4 is formed in the bottom side of the door body 3, the connecting frame 5 is installed in the first groove 4, the supporting wheel 9 is stably in contact with the ground under the action of the spring, the limiting rod 11 and the support rod 13, the door body 3 is supported on the side away from the hinge support 2 during rotation, the friction between the hinge support 2 and the door body 3 is reduced, the stability of the door body 3 during rotation is improved, and when the supporting wheel 9 or the connecting frame 5 is damaged, the first sleeve 7 and the second sleeve 8 are overlapped by pressing the adjusting ring 15, the connecting plate 14 is moved downward by reversely rotating the support rod 13, and the connecting frame 5 is moved out by the external force pushing mode, so that the door body 3 is easily disassembled, repaired and replaced.

[0026] The above is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the present application, and these improvements and refinements should also be regarded as the protection range of the present application.

[0027] The other parts not described in the present application are all prior art, and therefore will not be described here.

[0028] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-strength anti-explosion civil air defense door, comprising a door frame (1), a hinge support (2) and a door body (3), characterized in that, The door body (3) is provided with a first recess (4) on the bottom side, the first recess (4) is fixedly connected with a clamping rod (6), the clamping rod (6) is sleeved with a first clamping sleeve (7), the first clamping sleeve (7) is sleeved with a second clamping sleeve (8) on the bottom side, the second clamping sleeve (8) is fixedly connected with a connecting frame (5) at the bottom end, the connecting frame (5) is rotatably connected with a supporting wheel (9) through a rotating shaft in the connecting frame (5), the supporting wheel (9) is provided with a recess on both sides, the connecting frame (5) is fixedly connected with a limiting rod (11) at the upper end, the limiting rod (11) is sleeved with a spring, the limiting rod (11) is sleeved with a protrusion, and the protrusion is fixedly connected to the bottom side of the first clamping sleeve (7).

2. The high-strength blast door of claim 1, wherein, The connecting frame (5) is in contact with a sliding ball (12) on both sides, and the sliding ball (12) is in contact with the first recess (4).

3. The high-strength blast door of claim 2, wherein, The connecting frame (5) is threadedly connected with a supporting rod (13) at the upper end, the supporting rod (13) is fixedly connected with a connecting plate (14) at the upper end, and the connecting plate (14) is in contact with the first recess (4).

4. The high-strength blast door of claim 3, wherein, The first recess (4) is provided with an adjusting ring (15), the adjusting ring (15) is fixedly connected to the upper side of the first clamping sleeve (7), and the cross section of the first clamping sleeve (7) is in a triangular structure.

5. The high-strength blast door of claim 3, wherein, The connecting frame (5) is rotatably connected with a connecting roller (10) on the inner side, and the connecting roller (10) is in contact with the upper side of the recess.

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