Movable doorsill structure of civil air defense door

Abstract

The movable doorsill structure comprises an installation block, an insertion block is fixedly connected to the middle of the bottom wall of the installation block, an installation groove is formed in the middle of the top wall of the installation block and the middle of the top wall of the insertion block, and multiple sets of evenly-distributed openings are formed in the bottoms of the front wall and the rear wall of the inner side of the installation groove. The middle of the bottom wall of the mounting groove is fixedly connected with multiple sets of evenly-distributed fixing blocks, the middle of the top wall of each fixing block is fixedly connected with a connecting rod, the front end and the rear end of each connecting rod are fixedly connected with connecting plates, and the connecting rods penetrate through and are slidably connected to the middle of the side walls, close to each other, of the front movable cavity and the rear movable cavity. According to the movable doorsill structure of the civil air defense door, when the movable doorsill does not need to be used, the top plate is pulled out upwards to enable the positioning block and the lower pressing block to be pulled away from the inner side of the mounting groove, so that the two sets of clamping blocks get close to each other under the cooperation of the connecting plate and the spring, the clamping blocks are pulled out of the clamping grooves, the movable doorsill dismounting operation is completed, and the dismounting difficulty of the movable doorsill is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense doors, in particular to a movable threshold structure of a civil air defense door. Background Art

[0002] Civil defense doors are the doors at the entrances and exits of people's defense projects. There are distinct classifications of civil defense doors, including ordinary single-leaf and double-leaf protective closed doors and closed doors, movable thresholds of single-leaf and double-leaf protective closed doors and closed doors, and other civil defense equipment. The movable threshold of the civil defense door is characterized by the fact that the threshold is not installed at ordinary times, the ground is flat, and it is convenient for people and vehicles to pass. The threshold can be quickly installed in time of war to meet the requirements of protection and sealing functions, and quickly realize the conversion of peacetime and wartime functions.

[0003] In the prior art, the movable threshold of a traditional civil air defense door frame is connected to the civil air defense door frame with bolts before being embedded in the door frame. Since the movable threshold of the civil air defense door frame needs to be disassembled and placed up at ordinary times to meet the needs of normal traffic, the current movable threshold is connected to the door frame with bolts and many bolts need to be disassembled. Since the air in the basement is relatively humid, the bolts are likely to rust over a long period of time, affecting later maintenance. In addition, this method brings more inconvenience to the disassembly of the movable threshold, and the conversion time between peacetime and wartime is longer. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a movable threshold structure of a civil air defense door, comprising an embedded block, characterized in that a quick installation mechanism is arranged on the top of the embedded block;

[0006] The quick installation mechanism includes a mounting block, a plug block is fixedly connected to the middle of the bottom wall of the mounting block, a mounting groove is provided in the middle of the mounting block and the top wall of the plug block, a plurality of groups of evenly distributed openings are provided at the bottom of the front and rear walls inside the mounting groove, a plurality of groups of evenly distributed fixing blocks are fixedly connected to the middle of the bottom wall of the mounting groove, a connecting rod is fixedly connected to the middle of the top wall of the fixing block, a connecting plate is fixedly connected to the front and rear ends of the connecting rod, the connecting rod passes through and is slidably connected to the middle of a side wall close to the front and rear groups of active cavities, the active cavities are arranged in the middle of the block, and a spring is fixedly connected to the middle of a side wall of the connecting plate close to the connecting rod.

[0007] As a preferred technical solution of the utility model, the blocks are slidably connected to the inner side of the opening, and the other ends of the springs are fixedly connected to the middle of one side wall close to the inner sides of the front and rear groups of active cavities.

[0008] As a preferred technical solution of the utility model, a slide groove is arranged in the middle of the top wall of the embedded block, and evenly distributed clamping grooves are arranged on the lower sides of the front and rear walls of the slide groove.

[0009] As a preferred technical solution of the utility model, the clamping blocks are all clearance-matched with the clamping slots, and a positioning block is slidably connected to the upper side of the interior of the installation slot.

[0010] As a preferred technical solution of the utility model, a plurality of groups of evenly distributed downward pressing blocks are fixedly connected to the middle of the bottom wall of the positioning block, and a top plate is fixedly connected to the top of the positioning block.

[0011] As an optimal technical solution of the utility model, the front and rear sides of the bottom of the lower pressure block are provided with arc surfaces, the middle part of the bottom wall of the lower pressure block is provided with a connecting groove, the connecting groove is loosely matched with the connecting rod, and the connecting groove is located directly above the connecting rod.

[0012] As a preferred technical solution of the utility model, bolts are arranged at the four corners of the top plate, and the pressing blocks are located between the front and rear groups of clamping blocks.

[0013] The beneficial effects of the utility model are:

[0014] The movable threshold structure of the civil air defense door is characterized in that when the threshold needs to be used, the embedded block is embedded in the required installation position, the insert block is inserted downward into the inner side of the slide groove, and after the installation block is located on the upper side of the embedded block, the positioning block is moved to the upper side of the installation groove and inserted downward into the installation groove, so that the pressing block moves downward between the two groups of clamping blocks and applies a thrust to the clamping block to move outward, so that the clamping block is inserted into the clamping groove during the outward movement, and the installation operation of the movable threshold is completed, which reduces the difficulty of installing the movable threshold and improves the practicality of the movable threshold.

[0015] The movable threshold structure of this type of civil air defense door is such that when the movable threshold is not needed, the top plate is pulled upwards to allow the positioning block and the pressing block to be withdrawn from the inner side of the installation groove, so that the two groups of clamping blocks are close to each other with the cooperation of the connecting plate and the spring, so that the clamping blocks are pulled out from the inside of the clamping groove, completing the disassembly operation of the movable threshold and reducing the difficulty of disassembly of the movable threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of a movable threshold structure of a civil air defense door of the utility model from a top view;

[0018] Figure 2 It is a schematic diagram of the installation structure of a movable threshold structure of a civil air defense door of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation block structure of a movable threshold structure of a civil air defense door of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the engaging structure of a movable threshold structure of a civil air defense door.

[0021] In the figure: 1. embedded block; 2. quick installation mechanism; 3. slot; 4. mounting block; 5. mounting slot; 6. plug-in block; 7. opening; 8. block; 9. connecting rod; 10. connecting plate; 11. movable cavity; 12. fixing block; 13. spring; 14. top plate; 15. positioning block; 16. pressing block; 17. connecting slot; 18. arc surface; 19. bolt; 20. slide slot. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figure 1-4 As shown, the utility model is a movable threshold structure of a civil air defense door, comprising an embedded block 1, and a quick installation mechanism 2 is arranged on the top of the embedded block 1;

[0024] The quick installation mechanism 2 includes a mounting block 4, which will be blocked by the top of the embedded block 1 during the process of inserting the plug block 6 into the slide groove 20. The middle of the bottom wall of the mounting block 4 is fixedly connected with the plug block 6. The middle of the top wall of the mounting block 4 and the plug block 6 is provided with a mounting groove 5. The bottom of the front and rear walls inside the mounting groove 5 are provided with multiple groups of evenly distributed openings 7. The openings 7 are provided so that the card block 8 can slide back and forth inside it, and at the same time, it can play a certain limiting role on the card block 8. The middle of the bottom wall of the mounting groove 5 is fixedly connected with multiple groups of evenly distributed fixed The fixed block 12 and the middle part of the top wall of the fixed block 12 are fixedly connected with a connecting rod 9, and the connecting rod 9 is fixed by the fixed block 12, so as to limit the positions of the two groups of card blocks 8. The front and rear ends of the connecting rod 9 are fixedly connected with connecting plates 10, and the connecting rods 9 pass through and are slidably connected to the middle part of one side wall close to the front and rear groups of active cavities 11, and the active cavities 11 are arranged in the middle part of the card block 8. The connecting plate 10 is fixedly connected with a spring 13 in the middle part of the side wall close to the connecting rod 9, and the spring 13 can play a certain pulling effect on the card block 8.

[0025] Among them, the card blocks 8 are slidably connected to the inner side of the opening 7, and the other ends of the springs 13 are fixedly connected to the inner sides of the front and rear groups of active cavities 11 close to the middle of one side wall. The card blocks 8 slide back and forth inside the opening 7 and can be inserted into the inner side of the card slot 3 to fix the mounting block 4 on the top of the embedded block 1.

[0026] Among them, a slide groove 20 is set in the middle of the top wall of the embedded block 1, and evenly distributed card grooves 3 are set on the lower sides of the front and rear walls of the slide groove 20. The slide groove 20 is set so that the insertion block 6 can be inserted into it and the card block 8 is aligned with the card groove 3.

[0027] The clamping blocks 8 are all in clearance fit with the clamping slots 3 , and a positioning block 15 is slidably connected to the upper side of the installation slot 5 . When the positioning block 15 is inserted into the installation slot 5 , the pressing block 16 moves between the two groups of clamping blocks 8 .

[0028] Among them, a plurality of groups of evenly distributed pressing blocks 16 are fixedly connected to the middle of the bottom wall of the positioning block 15 , and a top plate 14 is fixedly connected to the top of the positioning block 15 .

[0029] Among them, arc surfaces 18 are provided on the front and rear sides of the bottom of the lower pressing block 16, and connecting grooves 17 are provided in the middle of the bottom wall of the lower pressing block 16. The connecting grooves 17 are clearance-matched with the connecting rod 9, and the connecting grooves 17 are located directly above the connecting rod 9.

[0030] Among them, bolts 19 are arranged at the four corners of the top plate 14 , the lower pressing blocks 16 are located between the front and rear groups of clamping blocks 8 , and the top plate 14 is fixed to the top of the mounting block 4 by the bolts 19 .

[0031] Working principle: when the threshold needs to be used, the embedded block 1 is embedded in the required installation position, the insertion block 6 is inserted downward into the inner side of the slide groove 20, and after the mounting block 4 is located on the upper side of the embedded block 1, the positioning block 15 is moved to the upper side of the mounting groove 5 and inserted downward into the mounting groove 5, so that the lower pressing block 16 moves down between the two groups of blocks 8 and applies a thrust to the blocks 8 to move outward, so that the blocks 8 are inserted into the slot 3 during the outward movement, and the installation operation of the movable threshold is completed, which reduces the difficulty of installing the movable threshold. When the movable threshold is not needed, the top plate 14 is pulled upward to pull the positioning block 15 and the lower pressing block 16 away from the inner side of the mounting groove 5, so that the two groups of blocks 8 are close to each other under the cooperation of the connecting plate 10 and the spring 13, so that the blocks 8 are pulled out from the inside of the slot 3, and the disassembly operation of the movable threshold is completed.

[0032] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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.

[0034] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A movable threshold structure of a civil air defense door, comprising an embedded block (1), characterized in that: A quick installation mechanism (2) is provided on the top of the embedded block (1); The quick installation mechanism (2) comprises a mounting block (4), a plug block (6) is fixedly connected to the middle of the bottom wall of the mounting block (4), a mounting groove (5) is arranged in the middle of the top wall of the mounting block (4) and the plug block (6), a plurality of groups of evenly distributed openings (7) are arranged at the bottom of the front and rear walls inside the mounting groove (5), a plurality of groups of evenly distributed fixing blocks (12) are fixedly connected to the middle of the bottom wall of the mounting groove (5), a connecting rod (9) is fixedly connected to the middle of the top wall of the fixing block (12), the front and rear ends of the connecting rod (9) are fixedly connected to connecting plates (10), the connecting rods (9) are penetrated and slidably connected to the middle of one side wall close to the front and rear groups of active cavities (11), the active cavities (11) are arranged in the middle of the clamping block (8), and the connecting plate (10) is fixedly connected to the middle of the side wall close to the connecting rod (9).

2. The movable threshold structure of a civil air defense door according to claim 1 is characterized in that: The clamping blocks (8) are slidably connected to the inner side of the opening (7), and the other ends of the springs (13) are fixedly connected to the inner sides of the front and rear groups of active cavities (11) close to the middle of one side wall.

3. The movable threshold structure of a civil air defense door according to claim 1 is characterized in that: A slide groove (20) is provided in the middle of the top wall of the embedded block (1), and evenly distributed clamping grooves (3) are provided on the lower sides of both the front and rear walls of the slide groove (20).

4. The movable threshold structure of a civil air defense door according to claim 1 is characterized in that: The clamping blocks (8) are all clearance-matched with the clamping slots (3), and a positioning block (15) is slidably connected to the upper side of the interior of the installation slot (5).

5. The movable threshold structure of a civil air defense door according to claim 4 is characterized in that: A plurality of groups of evenly distributed downward pressing blocks (16) are fixedly connected to the middle of the bottom wall of the positioning block (15), and a top plate (14) is fixedly connected to the top of the positioning block (15).

6. The movable threshold structure of a civil air defense door according to claim 5, characterized in that: The bottom of the lower pressing block (16) is provided with curved surfaces (18) on both the front and rear sides, and the middle of the bottom wall of the lower pressing block (16) is provided with a connecting groove (17), the connecting groove (17) is loosely matched with the connecting rod (9), and the connecting groove (17) is located directly above the connecting rod (9).

7. The movable threshold structure of a civil air defense door according to claim 5, characterized in that: Bolts (19) are provided at the four corners of the top plate (14), and the lower pressing blocks (16) are located between the front and rear groups of clamping blocks (8).

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