Quick-assembly type movable doorsill structure of civil air defense door

Abstract

The utility model discloses a quick-assembly type civil air defense door movable doorsill structure, and relates to the technical field of civil air defense engineering, the quick-assembly type civil air defense door movable doorsill structure comprises a fixed doorsill pre-buried underground, the upper surface of the fixed doorsill is flush with the ground, two ends of the fixed doorsill are rotatably connected with movable doorsills, and the upper surface of the fixed doorsill is provided with a clamping structure. Through cooperative arrangement of the limiting holes, the solenoids, the magnetic insertion rods, the sliding blocks and other structures, after the movable threshold is rotated to be parallel to the fixed threshold, the magnetic insertion rods are aligned to the limiting holes and are inserted into the limiting holes in a sliding mode under the action of self gravity, and at the moment, a user electrifies the coil to form an electrified solenoid structure together with the round pipe; the magnetic field opposite to the magnetism of the bottom of the magnetic insertion rod is generated at the end of the round pipe, the magnetic insertion rod is tightly attracted under the action of magnetic force, the magnetic insertion rod is locked and fixed, then the movable doorsill can be installed, and the problems that in an existing mode, the movable doorsill is screwed to the fixed doorsill through bolts, and the installation efficiency is low are solved as much as possible.

Description

Technical Field

[0001] The present application relates to the technical field of civil air defense engineering, and in particular to a quick-install movable threshold structure for a civil air defense door. Background Art

[0002] The characteristic of the movable threshold of the civil air defense door is that the threshold is not installed in normal times, the ground is flat, and it is convenient for people and vehicles to pass through. The threshold can be quickly installed in time of war to meet the requirements of protection and sealing functions and quickly realize functional conversion.

[0003] In the existing method of fixing the movable threshold of the civil air defense door, bolts are generally used to screw the movable threshold to the fixed threshold. In order to ensure a stable connection, multiple connection points are often set. When connecting, multiple bolts need to be screwed in sequence for fixing, which seriously affects the installation efficiency of the movable threshold. Utility Model Content

[0004] The utility model aims to solve or at least alleviate the problem of low installation efficiency in the prior art of screwing a movable threshold to a fixed threshold by bolts.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A quick-install movable threshold structure for a civil air defense door comprises a fixed threshold which is pre-buried in the ground and whose upper surface is flush with the ground, wherein both ends of the fixed threshold are rotatably connected with movable thresholds, a clamping structure is provided on the upper surface of the fixed threshold, and a locking structure is provided inside the movable threshold, the clamping structure comprises a plurality of limiting holes formed on the upper surface of the fixed threshold, and solenoids are embedded in the bottom walls of the plurality of limiting holes, and the locking structure comprises a plurality of accommodating cavities corresponding to the limiting holes formed inside the movable threshold, a slider is slidably connected in the inner cavity of the accommodating cavity, a magnetic plug rod is fixedly connected to the lower surface of the slider, and the bottom end of the magnetic plug rod penetrates through the bottom wall of the accommodating cavity and is then inserted into the inner cavity of the limiting hole.

[0007] By adopting the above technical scheme, when the movable threshold needs to be fixed in wartime, the movable threshold can be rotated to be parallel to the fixed threshold, and the power supply of the electromagnet is turned off. At this time, the slider loses its adsorption effect and slides down under its own gravity, pushing the magnetic rod to be inserted into the inner cavity of the limit hole opened on the upper surface of the fixed threshold. Then the user energizes the coil. The energized coil and the round tube together form an energized solenoid structure, so that the end of the round tube generates a magnetic field opposite to the magnetic bottom of the magnetic rod. Under the action of magnetic force, the magnetic rod is tightly adsorbed and locked to complete the installation of the movable threshold. The device has a simple structure and is quick and convenient to install. It tries to avoid the problem of low installation efficiency in the existing method of screwing the movable threshold to the fixed threshold by bolts.

[0008] Optionally, a fixing seat is welded at the bottom of the fixed threshold, the top cross-section of the fixing seat is a trapezoidal structure, the top width of the fixing seat is the same as the width of the fixed threshold, and the bottom width of the fixing seat is greater than the width of the fixed threshold.

[0009] By adopting the above technical solution, a fixing seat with a trapezoidal structure is provided for pre-buried underground to fix the fixed threshold, thereby greatly improving the stability of the connection between the fixed threshold and the ground.

[0010] Optionally, a pin is fixedly connected to the bottom wall of the two movable thresholds at one end away from each other, the pin passes through the fixed threshold and is rotatably connected to the fixed threshold, and the total length of the two movable thresholds is equal to the length of the fixed threshold.

[0011] By adopting the above technical solution, a pin is set to rotatably connect the ends of the two movable thresholds that are away from each other with the two ends of the fixed threshold through the pin, so that the user can rotate the two movable thresholds to be perpendicular to the fixed threshold in non-wartime, making it convenient for vehicles and pedestrians to pass over the fixed threshold.

[0012] Optionally, adjacent ends of the two movable door sills are fixedly connected with a first sealing plate made of a flexible rubber material.

[0013] By adopting the above technical solution, the first sealing plates made of flexible material are fixedly connected to the adjacent ends of the two movable thresholds, so that when the two movable thresholds are rotated to be parallel to the fixed thresholds, the two first sealing plates can be squeezed and tightly fitted to each other, thereby sealing the adjacent ends of the two movable thresholds.

[0014] Optionally, the solenoid includes a round tube made of metal material and a coil wound around the outer surface of the round tube, and two ends of the coil are electrically connected to the positive and negative poles of an external power source respectively.

[0015] By adopting the above technical solution, the coil and the metal round tube are energized to form an energized solenoid structure, so that the end of the round tube generates a magnetic field force to attract the magnetic rod and lock the magnetic rod. When the movable threshold needs to be opened after the alarm is lifted, the current direction of the coil can be changed, thereby changing the direction of the magnetic field at the end of the round tube. At this time, the magnetism of the end of the round tube is the same as that of the bottom end of the magnetic rod. The magnetic rod can be pushed out of the limit hole under the action of the magnetic field force, and the user can rotate the movable threshold along the pin shaft to open the movable threshold.

[0016] Optionally, the slider is made of a material that can be adsorbed by a magnetic material, and an electromagnet for adsorbing and fixing the slider is fixedly connected to the top wall of the inner cavity of the accommodating cavity.

[0017] By adopting the above technical solution, when the movable threshold is not in use, the electromagnet can be energized to generate a magnetic field force and adsorb the slider, so that the magnetic insertion rod is completely hidden inside the movable threshold.

[0018] Optionally, a second sealing plate is fixedly connected to the upper surface of the fixed threshold and the lower surface of the movable threshold, and adjacent sides of the two second sealing plates are provided with inclined surfaces with the same inclination angle.

[0019] By adopting the above technical solution, two second sealing plates are provided to seal the gap between the fixed threshold and the movable threshold, and the inclined surface is provided to increase the contact surface between the two second sealing plates, thereby improving the sealing effect of the second sealing plates.

[0020] In summary, the beneficial effects of this application are as follows:

[0021] The present application coordinates the structures such as the limit hole, the solenoid, the magnetic plug rod and the slider. After the movable threshold is rotated to be parallel to the fixed threshold, the magnetic plug rod is aligned with the limit hole and slides into the limit hole under the action of its own gravity. At this time, the user energizes the coil to form an energized solenoid structure together with the round tube, so that the end of the round tube generates a magnetic field opposite to the magnetic properties of the bottom of the magnetic plug rod. Under the action of the magnetic force, the magnetic plug rod is tightly adsorbed and locked to complete the installation of the movable threshold. The existing method of screwing the movable threshold to the fixed threshold by bolts is avoided as much as possible, which leads to low installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the overall structure of this application;

[0023] Figure 2 It is a side view of the overall structure of this application;

[0024] Figure 3 It is a schematic diagram of the connection structure of the solenoid of the present application.

[0025] Explanation of the reference numerals: 1. fixed threshold; 2. fixed seat; 3. movable threshold; 4. pin shaft; 5. first sealing plate; 6. limiting hole; 7. round tube; 8. coil; 9. accommodating chamber; 10. electromagnet; 11. slider; 12. magnetic plug rod; 13. second sealing plate. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 This application is described in further detail.

[0027] See also Figure 1-3 A quick-install civil air defense door movable threshold structure includes a fixed threshold 1 pre-buried in the ground and with the upper surface flush with the ground. The upper surface of the fixed threshold 1 is set flush with the ground, which does not affect vehicles and pedestrians passing over the fixed threshold 1 to enter the civil air defense project, and is convenient for normal use.

[0028] Both ends of the fixed threshold 1 are rotatably connected with movable thresholds 3. Normally, the user can rotate the movable threshold 3 along the position where the movable threshold 3 is connected to the fixed threshold 1, and rotate the two movable thresholds 3 to be perpendicular to the fixed threshold 1 to prevent the movable threshold 3 from obstructing the passage of vehicles and pedestrians.

[0029] A snap-fit ​​structure is provided on the upper surface of the fixed threshold 1, and a locking structure is provided inside the movable threshold 3. When in war, the user can rotate the movable threshold 3 to be parallel to the fixed threshold 1. At this time, the movable threshold 3 is inserted into the snap-fit ​​structure provided on the fixed threshold 1 through the locking structure to fix the movable threshold 3.

[0030] The clamping structure includes a plurality of limiting holes 6 formed on the upper surface of the fixed threshold 1 , and solenoids are embedded in the bottom walls of the plurality of limiting holes 6 .

[0031] The locking structure includes a plurality of accommodating cavities 9 corresponding to the limiting holes 6 opened inside the movable threshold 3, a slider 11 is slidably connected in the inner cavity of the accommodating cavity 9, a magnetic plug rod 12 is fixedly connected to the lower surface of the slider 11, and the bottom end of the magnetic plug rod 12 penetrates the bottom wall of the accommodating cavity 9 and is inserted into the inner cavity of the limiting hole 6. When the magnetic plug rod 12 is inserted into the limiting hole 6, the solenoid can be energized to form an energized solenoid structure, so that the end of the solenoid generates a magnetic field opposite to the magnetic field of the bottom end of the magnetic plug rod 12, and the magnetic plug rod 12 is tightly adsorbed by the magnetic field force, and the magnetic plug rod 12 is locked in the fixed threshold 1, thereby realizing the quick installation and fixation of the movable threshold 3 and the fixed threshold 1.

[0032] Reference Figure 2 A fixing seat 2 is welded at the bottom of the fixed threshold 1, and the top section of the fixing seat 2 is a trapezoidal structure. The top width of the fixing seat 2 is the same as the width of the fixed threshold 1, and the bottom width of the fixing seat 2 is greater than the width of the fixed threshold 1. The fixing seat 2 with a trapezoidal structure is used to be pre-buried underground to fix the fixed threshold 1, thereby greatly improving the stability of the connection between the fixed threshold 1 and the ground.

[0033] Reference Figure 1 The bottom walls of the two movable thresholds 3 at the ends away from each other are fixedly connected with a pin shaft 4, the pin shaft 4 penetrates the fixed threshold 1 and is rotatably connected to the fixed threshold 1, and the total length of the two movable thresholds 3 is equal to the length of the fixed threshold 1. The pin shaft 4 is provided to rotatably connect the ends of the two movable thresholds 3 away from each other with the two ends of the fixed threshold 1 through the pin shaft 4, so that the user can rotate the two movable thresholds 3 to be perpendicular to the fixed threshold 1 in non-wartime, so as to facilitate the passage of vehicles and pedestrians above the fixed threshold 1.

[0034] Reference Figure 1The adjacent ends of the two movable thresholds 3 are fixedly connected with a first sealing plate 5 made of a flexible rubber material. The first sealing plates 5 made of a flexible material are fixedly connected to the adjacent ends of the two movable thresholds 3, so that when the two movable thresholds 3 are rotated to be parallel to the fixed threshold 1, the two first sealing plates 5 can be squeezed and tightly fitted with each other to seal the adjacent ends of the two movable thresholds 3.

[0035] Reference Figure 2 and Figure 3 The solenoid comprises a round tube 7 made of metal material and a coil 8 wound on the outer surface of the round tube 7, and the two ends of the coil 8 are electrically connected to the positive and negative poles of the external power supply respectively. When the coil 8 and the round tube 7 made of metal material are energized, an energized solenoid structure is formed, so that the end of the round tube 7 generates a magnetic field force to attract the magnetic plug 12 and lock the magnetic plug 12. When the alarm is lifted and the movable threshold 3 needs to be opened, the current direction of the coil 8 can be changed, so that the direction of the magnetic field at the end of the round tube 7 is changed. At this time, the magnetic properties of the end of the round tube 7 are the same as those of the bottom of the magnetic plug 12, and the magnetic plug 12 can be pushed out of the limit hole 6 under the action of the magnetic field force, and the user can rotate the movable threshold 3 along the pin 4 to open the movable threshold 3.

[0036] Reference Figure 3 The slider 11 is made of a material that can be adsorbed by a magnetic material, and an electromagnet 10 for adsorbing and fixing the slider 11 is fixedly connected to the top wall of the inner cavity of the accommodating cavity 9. When the movable threshold 3 is not in use, the electromagnet 10 can be energized to generate a magnetic field force and adsorb the slider 11, so that the magnetic rod 12 is completely hidden inside the movable threshold 3.

[0037] Reference Figure 2 The upper surface of the fixed threshold 1 and the lower surface of the movable threshold 3 are both fixedly connected with a second sealing plate 13, and the adjacent sides of the two second sealing plates 13 are provided with inclined surfaces with the same inclination angle. The two second sealing plates 13 are provided to seal the gap between the fixed threshold 1 and the movable threshold 3, and the inclined surfaces are provided to increase the contact surface between the two second sealing plates 13, thereby improving the sealing effect of the second sealing plates 13.

[0038] The implementation principle of the present application is as follows: when the movable threshold 3 needs to be fixed in wartime, the movable threshold 3 can be rotated to be parallel to the fixed threshold 1, and the power supply of the electromagnet 10 can be turned off. At this time, the slider 11 loses its adsorption effect and slides down under its own gravity, pushing the magnetic rod 12 to be inserted into the inner cavity of the limiting hole 6 opened on the upper surface of the fixed threshold 1. Then the user energizes the coil 8. The energized coil 8 and the round tube 7 together form an energized solenoid structure, so that the end of the round tube 7 generates a magnetic field opposite to the magnetic field at the bottom of the magnetic rod 12. Under the action of magnetic force, the magnetic rod 12 is tightly adsorbed and locked and fixed, thereby completing the installation of the movable threshold 3. The present device has a simple structure and is quick and convenient to install. It tries to avoid the problem of low installation efficiency in the existing method of screwing the movable threshold to the fixed threshold 1 by bolts.

[0039] 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 quick-installed movable threshold structure for a civil air defense door, comprising a fixed threshold (1) pre-buried in the ground and having an upper surface flush with the ground, wherein both ends of the fixed threshold (1) are rotatably connected to movable thresholds (3), a clamping structure is provided on the upper surface of the fixed threshold (1), and a locking structure is provided inside the movable threshold (3), characterized in that: The clamping structure comprises a plurality of limiting holes (6) formed on the upper surface of the fixed threshold (1), and a solenoid is embedded in the bottom walls of the plurality of limiting holes (6). The locking structure comprises a plurality of accommodating cavities (9) formed inside the movable threshold (3) and corresponding to the limiting holes (6), a slider (11) being slidably connected in the inner cavity of the accommodating cavity (9), a magnetic plug rod (12) being fixedly connected to the lower surface of the slider (11), and a bottom end of the magnetic plug rod (12) passing through the bottom wall of the accommodating cavity (9) and then being inserted into the inner cavity of the limiting hole (6).

2. The quick-install movable threshold structure of a civil air defense door according to claim 1, characterized in that: A fixing seat (2) is welded to the bottom of the fixed threshold (1); the top cross-section of the fixing seat (2) is a trapezoidal structure; the top width of the fixing seat (2) is the same as the width of the fixed threshold (1); and the bottom width of the fixing seat (2) is greater than the width of the fixed threshold (1).

3. The quick-install movable threshold structure of a civil air defense door according to claim 1, characterized in that: A pin shaft (4) is fixedly connected to the bottom wall of the two movable thresholds (3) at one end away from each other. The pin shaft (4) passes through the fixed threshold (1) and is rotatably connected to the fixed threshold (1). The total length of the two movable thresholds (3) is equal to the length of the fixed threshold (1).

4. The quick-install movable threshold structure of a civil air defense door according to claim 1, characterized in that: Adjacent ends of the two movable door sills (3) are fixedly connected with a first sealing plate (5) made of a flexible rubber material.

5. The quick-install movable threshold structure of a civil air defense door according to claim 1, characterized in that: The solenoid comprises a round tube (7) made of a metal material and a coil (8) wound around the outer surface of the round tube (7), and two ends of the coil (8) are electrically connected to the positive and negative poles of an external power source respectively.

6. The quick-install movable threshold structure of a civil air defense door according to claim 1, characterized in that: The slider (11) is made of a material that can be adsorbed by a magnetic material, and an electromagnet (10) for adsorbing and fixing the slider (11) is fixedly connected to the top wall of the inner cavity of the accommodating cavity (9).

7. The quick-install movable threshold structure of a civil air defense door according to claim 1, characterized in that: A second sealing plate (13) is fixedly connected to the upper surface of the fixed threshold (1) and the lower surface of the movable threshold (3), and adjacent sides of the two second sealing plates (13) are provided with inclined surfaces having the same inclination angle.

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