Height-adjustable civil air defense door threshold

Abstract

The utility model relates to a height-adjustable civil air defense door threshold, which belongs to the field of civil air defense door thresholds and comprises a civil air defense door frame body, and a U-shaped frame is fixed on the bottom wall of an inner cavity of the civil air defense door frame body. According to the civil air defense door threshold with the adjustable height, when the civil air defense door threshold is adjusted, a sealing plate on the front face of the civil air defense door frame body can be detached through bolts, and then a shifting piece in the frame body is pushed leftwards through a fixing opening; then the spring telescopic rod is compressed and drives the outer side of the right side of the clamping rod to move out of the interior of the clamping groove in the left side, the height of the civil air defense door threshold can be adjusted, after the height of the civil air defense door threshold is adjusted, stirring of the fixing rod is stopped, and the clamping rod is slidably inserted into the clamping groove in the right side under the action of the reset elastic force of the spring telescopic rod; and at the moment, the sealing plate is fixed to the front face of the civil defense door frame body through bolts and located on the outer side of the fixing opening, so that the height of the civil defense door threshold is conveniently adjusted, and practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of civil air defense door threshold, specifically to a height -adjustable civil air defense door threshold. BACKGROUND

[0002] The civil air defense door threshold refers to the bottom part of the door for civil air defense engineering, which is usually wide and solid, and is designed to provide additional security and protection to prevent unauthorized personnel from entering or escaping from the civil air defense facilities.

[0003] For example, Chinese patent CN217813040U discloses a civil air defense door threshold lifting structure, which relates to the field of civil air defense doors, and includes a threshold body, which includes a base and a lifting plate. The upper end surface of the base is provided with a lifting groove for inserting the lifting plate. The opposite sides of the lifting plate are provided with sliding blocks. The opposite inner side walls of the lifting groove are provided with adjusting grooves for sliding blocks to be inserted and slid in the vertical direction. Limiting lead screws are arranged in the adjusting grooves in the vertical direction. The lower end of the limiting lead screw is rotationally connected to the inner side wall of the adjusting groove. The sliding block is provided with an adjusting hole for the limiting lead screw to pass through. The adjusting hole is threadedly connected with the limiting lead screw. The upper end surface of the base is provided with a limiting hole for the upper end of the limiting lead screw to extend out. The end of the limiting lead screw extending out of the limiting hole is provided with a limiting block. When a vehicle needs to pass through the civil air defense door, the limiting block is rotated, which drives the limiting lead screw to rotate, and the limiting lead screw drives the limiting block to move down, so that the lifting plate can be lowered into the lifting groove, and the operation is simple.

[0004] Although the above-mentioned patent can make the lifting plate lower into the lifting groove and the operation is simple, the lifting plate in the patent cannot be adjusted to any height in the base. Since the construction environment of civil air defense doors is variable, it is inevitable that the construction size will not match the design size, which can easily lead to difficulties in installing the civil air defense door and poor sealing performance. UTILITY MODEL CONTENTS

[0005] In view of the shortcomings of the prior art, the utility model provides a height-adjustable civil air defense door threshold, which has the advantages of being able to adjust the height of the civil air defense door threshold arbitrarily, reducing the difficulties in installing the civil air defense door and poor sealing performance caused by the mismatch between the construction size and the design size, and solving the problem that the lifting plate in the base cannot be adjusted to any height. Since the construction environment of civil air defense doors is variable, it is inevitable that the construction size will not match the design size, which can easily lead to difficulties in installing the civil air defense door and poor sealing performance.

[0006] To achieve the above object, the utility model provides the following technical scheme: A height -adjustable civil air defence door threshold, including civil air defence door frame body, the bottom wall of the civil air defence door frame body inner chamber is fixed with the U type frame, the front of U type frame is equipped with fixed mouth, the bottom wall of U type frame inner chamber is equipped with adjusting mechanism, the front of U type frame and the outside of fixed mouth are fixed with sealing plate through bolt,

[0007] The adjusting mechanism includes a fixed frame, a threaded cylinder, a threaded rod, a connecting block, two limiting grooves, two limiting blocks, and a connecting assembly. The fixed frame is fixed to the bottom wall of the inner cavity of the U-shaped frame. The threaded cylinder is rotatably connected to the bottom wall of the inner cavity of the fixed frame through a bearing. The threaded rod is screw-connected to the inside of the threaded cylinder. The bottom end of the connecting block is fixedly connected to the top end of the threaded rod. The two limiting grooves are both formed on the left and right side walls of the inner cavity of the fixed frame. The limiting blocks are slidably connected to the inside of the limiting grooves. The opposite sides of the limiting blocks on the left and right sides are both fixedly connected to the left and right sides of the connecting block.

[0008] By adopting the technical scheme, the civil air defence door threshold can be adjusted to any height, reducing the difficulty of installing the civil air defence door and the poor sealing performance caused by the inconsistency between the construction size and the design size.

[0009] Further, the limiting blocks move linearly up and down in the limiting grooves.

[0010] By adopting the technical scheme, the stability of the lifting block moving up and down can be improved through the limiting blocks and the limiting grooves on the left and right sides.

[0011] Further, the threaded cylinder is located on the longitudinal center axis of the fixed frame.

[0012] By adopting the technical scheme, the stability of the threaded cylinder rotating is improved.

[0013] Further, the connecting assembly includes a lifting block, a fixed ring, not less than two clamping grooves, two fixed rods, a clamping rod, a frame body, a spring telescopic rod, and a pushing piece. The bottom end of the lifting block is fixedly connected to the top end of the connecting block. The fixed ring is fixed to the outside of the threaded cylinder. The not less than two clamping grooves are both formed on the outside of the fixed ring. The two fixed rods are both fixed to the left and right sides of the fixed ring. The frame body is fixed to the left side wall of the inner cavity of the fixed frame. The spring telescopic rod is fixed to the left side wall of the inner cavity of the fixed frame. The right side of the clamping rod is fixedly connected to the left side of the clamping rod. The clamping rod is slidably connected to the inside of the frame body. The pushing piece is fixed to the front of the clamping rod. The outside of the right side of the clamping rod is slidably inserted into the inside of the left clamping groove.

[0014] By adopting the technical scheme, the not less than two clamping grooves are evenly distributed on the outside of the fixed ring. The connecting block can drive the lifting block to move up and down in the U-shaped frame.

[0015] Further, the spring telescopic rod and the push piece are located inside the frame body.

[0016] By adopting the technical scheme, the spring telescopic rod has elasticity to be contracted.

[0017] Further, the spring telescopic rod comprises a first sliding rod, a second sliding rod is slidably connected inside the first sliding rod, and a spring is movably sleeved outside the first sliding rod.

[0018] By adopting the technical scheme, the outer side of the clamping rod right side can be slidably inserted into the left side clamping groove through the reset elastic force of the spring telescopic rod.

[0019] Further, the clamping rod moves linearly left and right inside the frame body.

[0020] By adopting the technical scheme, the clamping rod is slidably connected inside the frame body, and the stability of the left and right movement of the clamping rod is improved.

[0021] Further, the outer diameter of the clamping rod is matched with the inner diameter of the clamping groove, and the clamping rod moves linearly left and right inside the clamping groove.

[0022] By adopting the technical scheme, the threaded cylinder can be limited through the cooperation between the clamping rod and the left side clamping groove.

[0023] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0024] When the height of the civil defense door threshold is adjusted, the sealing plate on the front of the civil defense door frame body can be disassembled through the bolt, the push piece inside the frame body is pushed left through the fixing port, the spring telescopic rod is compressed and drives the outer side of the clamping rod right side to move out of the inside of the left side clamping groove, the fixed rod is pushed, the threaded rod moves up and down to drive the connecting block and the lifting block to move up and down inside the U-shaped frame, and the height of the civil defense door threshold can be adjusted. After the height of the civil defense door threshold is adjusted, the clamping rod is slidably inserted into the inside of the right side clamping groove through the reset elastic force of the spring telescopic rod, the sealing plate is fixed on the front of the civil defense door frame body and located outside the fixing port through the bolt, and the height of the civil defense door threshold can be conveniently adjusted, thereby improving the practicability. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the present application;

[0026] Figure 2 It is a schematic view of the adjusting mechanism of the present application;

[0027] Figure 3The utility model discloses a lifting block's three-dimensional schematic view.

[0028] In the drawing: 1, the civil air defence door frame body; 2, U type frame; 3, fixed mouth; 4, adjusting mechanism; 41, fixed frame; 42, threaded cylinder; 43, threaded rod; 44, connecting block; 45, limit slot; 46, limit block; 47, connecting assembly; 471, lifting block; 472, fixed ring; 473, clamping groove; 474, fixed rod; 475, clamping rod; 476, frame body; 477, spring telescopic rod; 478, actuating piece; 5, sealing plate. DETAILED DESCRIPTION

[0029] The utility model discloses an embodiment of the utility model will combine with the drawing in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment only is a part of embodiment of the utility model, but is not all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skill in the art obtains without making the creative labor are within the range of the utility model protection.

[0030] Please refer to Figure 1 The utility model discloses a kind of height-adjustable civil air defence door door sill in the embodiment, including civil air defence door frame body 1, the bottom wall of the inner chamber of civil air defence door frame body 1 is fixed with U type frame 2, fixed mouth 3 is set in the front of U type frame 2, the bottom wall of the inner chamber of U type frame 2 is equipped with adjusting mechanism 4, adjusting mechanism 4 can be arbitrarily height-adjusted to civil air defence door door sill, reduce the difficulty of installation and the poor sealing performance of civil air defence door caused by that construction size is not in accordance with design size, sealing plate 5 is fixed by bolt on the front of U type frame 2 and located the outside of fixed mouth 3.

[0031] Please refer to Figures 2-3 In order to be arbitrarily height-adjusted to civil air defence door door sill, reduce the difficulty of installation and the poor sealing performance of civil air defence door caused by that construction size is not in accordance with design size, in the embodiment, adjusting mechanism 4 includes fixed frame 41, threaded cylinder 42, threaded rod 43, connecting block 44, two limit slots 45, two limit blocks 46 and connecting assembly 47, fixed frame 41 is fixed in the bottom wall of the inner chamber of U type frame 2, threaded cylinder 42 is rotatably connected in the bottom wall of the inner chamber of fixed frame 41 by bearing, threaded rod 43 is screw-connected in the inside of threaded cylinder 42, the bottom end of connecting block 44 is fixedly connected with the top end of threaded rod 43, two limit slots 45 are all set in the left and right two side walls of the inner chamber of fixed frame 41, limit block 46 is slidably connected in the inside of limit slot 45, and the opposite side of left and right limit blocks 46 is fixedly connected with the left and right sides of connecting block 44.

[0032] In the embodiment, the limiting block 46 moves linearly up and down inside the limiting groove 45, the threaded cylinder 42 is located on the longitudinal central axis of the fixed frame 41, the connecting assembly 47 comprises a lifting block 471, a fixed ring 472, not less than two clamping grooves 473, two fixed rods 474, a clamping rod 475, a frame body 476, a spring telescopic rod 477 and a pushing piece 478, the bottom end of the lifting block 471 is fixedly connected with the top end of the connecting block 44, the fixed ring 472 is fixed outside the threaded cylinder 42, and the not less than two clamping grooves 473 are all formed in the outer side of the fixed ring 472.

[0033] In the embodiment, the fixed ring 472 and the threaded cylinder 42 are driven to rotate by rotating the fixed rod 474, the threaded rod 43 threaded in the threaded cylinder 42 moves up and down under the cooperation of the left and right limiting grooves 45 and the limiting block 46, the connecting block 44 and the lifting block 471 move up and down in the U-shaped frame 2 under the action of the threaded rod 43, and the lifting block 471 comprises a block body, and sealing rubber layers are fixed to the left and right sides of the block body.

[0034] In the embodiment, the two fixed rods 474 are fixed to the left and right sides of the fixed ring 472, the frame body 476 is fixed to the left side wall in the inner cavity of the fixed frame 41, the spring telescopic rod 477 is fixed to the left side wall in the inner cavity of the fixed frame 41, the right side of the spring telescopic rod 477 is fixedly connected with the left side of the clamping rod 475, the clamping rod 475 is slidingly connected in the frame body 476, and the pushing piece 478 is fixed to the front of the clamping rod 475.

[0035] In the embodiment, when the threshold of the civil defense door is adjusted, the sealing plate 5 on the front of the civil defense door frame body 1 can be disassembled through a bolt, the pushing piece 478 in the frame body 476 is pushed to the left through the fixing port 3, and then the spring telescopic rod 477 is compressed and drives the outside of the right side of the clamping rod 475 to move out of the left clamping groove 473.

[0036] In the embodiment, the outside of the right side of the clamping rod 475 is slidingly inserted into the left clamping groove 473, the spring telescopic rod 477 and the pushing piece 478 are located in the frame body 476, the spring telescopic rod 477 comprises a first sliding rod, a second sliding rod is slidingly connected in the first sliding rod, and a spring is movably sleeved outside the first sliding rod, the clamping rod 475 moves linearly left and right in the frame body 476, the outer diameter of the clamping rod 475 is matched with the inner diameter of the clamping groove 473, and the clamping rod 475 moves linearly left and right in the clamping groove 473.

[0037] It needs to be explained that the height of the threshold of the civil air defense door can be adjusted, after the height of the threshold of the civil air defense door is adjusted, stop the fixed rod 474 and the clamping rod 475 is inserted in the right side of the clamping groove 473 under the reset elastic force of the spring telescopic rod 477, at this time, the sealing plate 5 is fixed on the front of the civil air defense door frame body 1 and outside the fixed port 3 through the bolt, and then the height of the threshold of the civil air defense door is adjusted to improve the practicability.

[0038] The working principle of the above embodiment is:

[0039] When the threshold of the civil air defense door is adjusted, the sealing plate 5 on the front of the civil air defense door frame body 1 can be disassembled through the bolt, then the pushing piece 478 in the frame body 476 is pushed to the left through the fixed port 3, then the spring telescopic rod 477 is compressed and drives the clamping rod 475 to move out of the left side of the clamping groove 473, at this time, the fixed ring 472 and the threaded cylinder 42 are rotated by rotating the fixed rod 474, the threaded rod 43 in the threaded cylinder 42 is moved up and down under the cooperation of the left and right side limiting grooves 45 and the limiting blocks 46, the connecting block 44 and the lifting block 471 are moved up and down in the U-shaped frame 2, and then the height of the threshold of the civil air defense door can be adjusted, after the height of the threshold of the civil air defense door is adjusted, stop the fixed rod 474 and the clamping rod 475 is inserted in the right side of the clamping groove 473 under the reset elastic force of the spring telescopic rod 477, at this time, the sealing plate 5 is fixed on the front of the civil air defense door frame body 1 and outside the fixed port 3 through the bolt, and then the height of the threshold of the civil air defense door is adjusted to improve the practicability.

Claims

1. An adjustable height blast door threshold comprising a blast door frame body (1), characterized in that: The bottom wall of the inner cavity of the human air defense door frame body (1) is fixed with a U-shaped frame (2), the front surface of the U-shaped frame (2) is provided with a fixed opening (3), and the bottom wall of the inner cavity of the U-shaped frame (2) is provided with an adjusting mechanism (4); the front surface of the U-shaped frame (2) and the outer side of the fixed opening (3) are fixedly provided with a sealing plate (5) through bolts. The adjusting mechanism (4) comprises a fixed frame (41), a threaded cylinder (42), a threaded rod (43), a connecting block (44), two limiting grooves (45), two limiting blocks (46) and a connecting assembly (47); the fixed frame (41) is fixed to the bottom wall of the inner cavity of the U-shaped frame (2); the threaded cylinder (42) is rotatably connected to the bottom wall of the inner cavity of the fixed frame (41) through a bearing; the threaded rod (43) is threadedly connected to the inside of the threaded cylinder (42); the bottom end of the connecting block (44) is fixedly connected to the top end of the threaded rod (43); the two limiting grooves (45) are both formed in the left and right side walls of the inner cavity of the fixed frame (41); the limiting blocks (46) are slidably connected to the inside of the limiting grooves (45); and the opposite sides of the left and right limiting blocks (46) are fixedly connected to the left and right sides of the connecting block (44).

2. The height-adjustable blast door sill of claim 1, wherein: The limiting blocks (46) move linearly up and down in the limiting grooves (45).

3. The height-adjustable blast door sill of claim 1, wherein: The threaded cylinder (42) is located on the longitudinal central axis of the fixed frame (41).

4. The height-adjustable blast door sill of claim 1, wherein: The connecting assembly (47) comprises a lifting block (471), a fixed ring (472), a plurality of clamping grooves (473), two fixed rods (474), a clamping rod (475), a frame body (476), a spring telescopic rod (477) and a pushing piece (478); the bottom end of the lifting block (471) is fixedly connected to the top end of the connecting block (44); the fixed ring (472) is fixed to the outside of the threaded cylinder (42); the plurality of clamping grooves (473) are all formed in the outside of the fixed ring (472); the two fixed rods (474) are both fixed to the left and right sides of the fixed ring (472); the frame body (476) is fixed to the left side wall of the inner cavity of the fixed frame (41); the spring telescopic rod (477) is fixed to the left side wall of the inner cavity of the fixed frame (41); the right side of the spring telescopic rod (477) is fixedly connected to the left side of the clamping rod (475); the clamping rod (475) is slidably connected to the inside of the frame body (476); the pushing piece (478) is fixed to the front surface of the clamping rod (475); and the outside of the right side of the clamping rod (475) is slidably inserted into the inside of the left clamping groove (473).

5. A height adjustable blast door sill according to claim 4, wherein: The spring telescopic rod (477) and the pushing piece (478) are both located in the inside of the frame body (476).

6. The height-adjustable blast door sill of claim 4, wherein: The spring telescopic rod (477) comprises a first sliding rod, a second sliding rod is slidably connected to the inside of the first sliding rod, and a spring is movably sleeved to the outside of the first sliding rod.

7. The height-adjustable blast door sill of claim 4, wherein: The clamping rod (475) moves linearly left and right in the inside of the frame body (476).

8. The height-adjustable blast door sill of claim 4, wherein: The outer diameter of the clamping rod (475) is matched with the inner diameter of the clamping groove (473), and the clamping rod (475) moves linearly left and right in the inside of the clamping groove (473).

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