A device for measuring the diagonal length of a door opening of a civil air defense project

Abstract

The utility model relates to diagonal line measurement technical field, and disclose a kind of civil air defence engineering door hole diagonal line length measuring device, including civil air defence door hole body, the first installation angle plate is installed in civil air defence door hole body inner bottom, two first installation blocks are fixedly installed in the first installation angle plate upper surface, one No. Rotatably installed between two first installation blocks is No. The surface of No. No. One No. One mounting seat is fixedly installed in the first installation block. By clamping installation protection mechanism in mounting seat side, the elastic protection pad in the protection mechanism is used to protect the reflecting block and laser range finder lens, to avoid scratch on their surface in the transportation process, influence diagonal line measurement, protective shell can seal reflecting block and laser range finder, avoid dust in door hole pollution reflector and laser range finder, influence measurement accuracy, while silica gel drying bag can absorb water vapor, to avoid water vapor cause laser range finder circuit damage, to increase the service life of laser range finder.

Description

Technical Field

[0001] This utility model relates to the field of diagonal measurement technology, specifically a device for measuring the diagonal length of a doorway in a civil defense project. Background Technology

[0002] The dimensions of the door opening of a civil defense airtight door are related to the sealing and strength of the door installation. The dimensions of the door opening need to be tested, and the diagonal length is an important test indicator related to the squareness of the door opening.

[0003] Currently, the diagonal length of entrances to civil defense projects is generally measured using a measuring tape or by handheld laser rangefinders. However, when using a handheld laser rangefinder, hand tremors may affect the measurement results. In addition, most existing diagonal length measuring devices do not have portable protective mechanisms for the laser rangefinder and reflector. This means that when the equipment is moved and transported within the civil defense project, the laser rangefinder and reflector may collide with other instruments, causing scratches on the reflector surface or damage to the laser rangefinder, thus affecting the measurement work. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for measuring the diagonal length of doorways in civil defense engineering projects. This device offers advantages such as more accurate measurement and a longer service life, thus solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a device for measuring the diagonal length of a civil defense engineering doorway, comprising a civil defense doorway body, a first mounting angle plate installed on the inner bottom surface of the civil defense doorway body, two No. 1 mounting blocks fixedly installed on the upper surface of the first mounting angle plate, a No. 1 rotating shaft rotatably installed between the two No. 1 mounting blocks, a No. 1 mounting seat fixedly installed on the surface of the No. 1 rotating shaft, a laser rangefinder fixedly installed on one side of the No. 1 mounting seat, a second protective mechanism snapped onto the same side of the No. 1 mounting seat, a second mounting angle plate installed on the inner top surface of the civil defense doorway body, two No. 2 mounting blocks fixedly installed on the lower end surface of the second mounting angle plate, a No. 2 rotating shaft rotatably installed between the two No. 2 mounting blocks, a No. 2 mounting seat fixedly installed on the surface of the No. 2 rotating shaft, a reflector fixedly installed on one side of the No. 2 mounting seat, a first protective mechanism snapped onto the same side of the No. 2 mounting seat, and a driving mechanism fixedly installed on one side of both the No. 1 and No. 2 rotating shafts.

[0006] As a preferred embodiment of the present invention, the driving mechanism includes a first housing, a drive motor is fixedly installed on one side of the first housing, and a coupling is fixedly installed at the output end of the drive motor.

[0007] As a preferred embodiment of this utility model, a storage battery is snapped into the interior of the first outer casing, and a snap-fit ​​plate is snapped into the upper surface of the first outer casing.

[0008] As a preferred technical solution of this utility model, the first protective mechanism includes a first protective shell, a first elastic protective pad is fixedly installed on the inner rear wall of the first protective shell, and a first snap-fit ​​block is fixedly installed on the front end face of the first protective shell.

[0009] As a preferred embodiment of the present invention, the second protective mechanism includes a second protective shell, a second elastic protective pad is fixedly installed on the inner rear wall of the second protective shell, and a second snap-fit ​​block is fixedly installed on the front end face of the second protective shell.

[0010] As a preferred technical solution of this utility model, two limiting blocks are fixedly installed on the inner walls of both sides of the second protective shell, and a silica gel drying bag is snapped between each pair of the multiple limiting blocks, and a limiting plate is snapped onto the front end face of the multiple limiting blocks.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This device for measuring the diagonal length of a doorway in a civil defense project involves mounting a reflector and a laser rangefinder on two rotating shafts. The shafts are driven to rotate by a drive mechanism. The drive motor rotates the first shaft to adjust the angle of the laser rangefinder, ensuring it faces the diagonal of the doorway. The drive motor then rotates the second shaft to adjust the angle of the reflector, allowing it to reflect the laser pulses emitted by the laser rangefinder back. This process completes the measurement of the diagonal length of the doorway. This design avoids the impact of manual hand tremors on the measurement results and enables the device to quickly locate and measure the diagonal of the doorway, reducing errors caused by manual positioning.

[0012] 2. This diagonal length measuring device for the entrance of the civil defense project uses a protective mechanism that is snapped onto one side of the mounting base. The elastic protective pad inside the protective mechanism protects the reflector and the laser rangefinder lens, preventing scratches on their surfaces during transportation that could affect the diagonal measurement. The protective shell seals the reflector and laser rangefinder, preventing dust inside the entrance from contaminating them and affecting measurement accuracy. At the same time, the silica gel desiccant absorbs moisture, preventing damage to the laser rangefinder circuitry and thus increasing the lifespan of the laser rangefinder. Attached Figure Description

[0013] Figure 1 This is an isometric schematic diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the first mounting angle plate of this utility model; Figure 3 This is a schematic cross-sectional view of the second mounting angle plate of this utility model; Figure 4 This is a cross-sectional schematic diagram of the drive mechanism of this utility model; Figure 5 This is a cross-sectional schematic diagram of the first protective mechanism of this utility model. Figure 6 This is a cross-sectional schematic diagram of the second protective mechanism of this utility model.

[0014] In the diagram: 1. Air raid shelter door body; 2. First mounting corner plate; 3. Second mounting corner plate; 4. Drive mechanism; 5. First protection mechanism; 6. Second protection mechanism; 7. Mounting block No. 1; 8. Laser rangefinder; 9. Mounting base No. 1; 10. Rotating shaft No. 1; 11. Reflector block; 12. Mounting block No. 2; 13. Rotating shaft No. 2; 14. Mounting base No. 2; 401. Outer shell No. 1; 402. Battery; 403. Clip-on plate; 404. Drive motor; 405. Coupling; 501. Protective shell No. 1; 502. Elastic protective pad No. 1; 503. Clip-on block No. 1; 601. Protective shell No. 2; 602. Limiting block; 603. Silica gel drying bag; 604. Elastic protective pad No. 2; 605. Limiting plate; 606. Clip-on block No. 2. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-6 A device for measuring the diagonal length of a civil defense engineering doorway includes a civil defense doorway body 1. A first mounting angle plate 2 is installed on the bottom inner surface of the civil defense doorway body 1. Two No. 1 mounting blocks 7 are fixedly installed on the upper end surface of the first mounting angle plate 2. A No. 1 rotating shaft 10 is rotatably installed between the two No. 1 mounting blocks 7. A No. 1 mounting seat 9 is fixedly installed on the surface of the No. 1 rotating shaft 10. A laser rangefinder 8 is fixedly installed on one side of the No. 1 mounting seat 9. A second protection mechanism 6 is snapped onto the same side of the No. 1 mounting seat 9. A second mounting angle plate 3 is installed on the top inner surface of the civil defense doorway body 1. Two No. 2 mounting blocks 12 are fixedly installed on the lower end surface of the second mounting angle plate 3. A No. 2 rotating shaft 13 is rotatably installed between the two No. 2 mounting blocks 12. A No. 2 mounting seat 14 is fixedly installed on the surface of the No. 2 rotating shaft 13. A reflective block 11 is fixedly installed on one side of the No. 2 mounting seat 14. A first protection mechanism 5 is snapped onto the same side of the No. 2 mounting seat 14. A drive mechanism 4 is fixedly installed on one side of both the No. 1 rotating shaft 10 and the No. 2 rotating shaft 13. In the above structure, the laser rangefinder 8 and the reflector 11 are installed on the diagonal of the air-raid shelter door body 1 using the first mounting angle plate 2 and the second mounting angle plate 3. At the same time, the first rotating shaft 10 and the second rotating shaft 13 can be driven to rotate by the drive mechanism 4 to change the angle of the laser rangefinder 8 and the reflector 11. Initially, the drive mechanism 4 drives the first rotating shaft 10 to rotate, thereby changing the angle of the laser rangefinder 8 so that the laser pulse emitted by the laser rangefinder 8 is aligned with the diagonal of the doorway. Then, the drive mechanism 4 drives the second rotating shaft 13 to rotate, thereby changing the angle of the reflector 11 so that the reflector 11 can reflect the laser pulse back to the laser rangefinder 8 along the original path, thus completing the measurement of the diagonal length of the air-raid shelter door body 1. When moving and transporting the measuring device, the first protective mechanism 5 and the second protective mechanism 6 are needed to seal and protect the reflector 11 and the laser rangefinder 8 to prevent them from being damaged during transportation and affecting the accuracy of the diagonal measurement.

[0017] In a preferred embodiment, the drive mechanism 4 includes a first housing 401, a drive motor 404 is fixedly installed on one side of the first housing 401, a coupling 405 is fixedly installed at the output end of the drive motor 404, a storage battery 402 is snapped inside the first housing 401, and a snap-fit ​​plate 403 is snapped on the upper surface of the first housing 401. In the above structure, the rotating shaft is connected by the coupling 405, so that the rotating shaft can rotate under the drive of the drive motor 404. The battery 402 is used to power the drive motor 404. When the battery 402 is low in power, it can be replaced by opening the snap plate 403.

[0018] In a preferred embodiment, the first protective mechanism 5 includes a first protective shell 501, a first elastic protective pad 502 fixedly installed on the inner rear wall of the first protective shell 501, and a first snap-fit ​​block 503 fixedly installed on the front end face of the first protective shell 501. In the above structure, the first protective mechanism 5 can be snapped and fixed onto the second mounting base 14 by the first snap-fit ​​block 503, thereby sealing the reflector block 11. At the same time, the first elastic protective pad 502 protects the reflector block 11. This can prevent the reflector block 11 from being scratched by collisions during transportation, which would affect the measurement results, and can also prevent dust from accumulating on the surface of the reflector block 11 and affecting the measurement accuracy. In a preferred embodiment, the second protective mechanism 6 includes a second protective shell 601, a second elastic protective pad 604 fixedly installed on the rear inner wall of the second protective shell 601, a second snap-fit ​​block 606 fixedly installed on the front face of the second protective shell 601, two limiting blocks 602 fixedly installed on the inner walls of both sides of the second protective shell 601, a silica gel drying bag 603 snapped between each pair of multiple limiting blocks 602, and a limiting plate 605 snapped onto the front face of multiple limiting blocks 602; In the above structure, the second protective mechanism 6 is snapped and fixed to the first mounting base 9 by the second snap-fit ​​block 606, thereby sealing the laser rangefinder 8. It works in conjunction with the second elastic protective pad 604 to protect the laser rangefinder 8. This can prevent the laser rangefinder 8 from being deformed and damaged by collisions during transportation. At the same time, a silicone desiccant pack 603 is also snapped and installed on the inner wall of the second protective shell 601. The silicone desiccant pack 603 can keep the laser rangefinder 8 dry during transportation, preventing moisture from damaging the circuit of the laser rangefinder 8, thereby increasing the service life of the measuring device.

[0019] Working principle: The laser rangefinder 8 and reflector 11 are mounted diagonally on the main body 1 of the air-raid shelter door using the first mounting angle plate 2 and the second mounting angle plate 3. Simultaneously, the first rotating shaft 10 and the second rotating shaft 13 are connected by a coupling 405, allowing the shafts to rotate under the drive of the drive motor 404. The battery 402 powers the drive motor 404. When the battery 402's power is low, it can be replaced by opening the snap-fit ​​plate 403. Initially, the drive motor 404 rotates the first rotating shaft 10 to change the angle of the laser rangefinder 8, ensuring the laser pulse emitted by the laser rangefinder 8 is aligned with the diagonal of the doorway. Then, the drive motor 404 rotates the second rotating shaft 13 to change the angle of the reflector 11. This allows the reflector 11 to reflect the laser pulse back to the laser rangefinder 8 along its original path, thereby completing the diagonal length measurement of the main body 1 of the air-raid shelter. When moving and transporting the measuring device, the first protective mechanism 5 and the second protective mechanism 6 are respectively snapped and fixed onto the second mounting base 14 and the first mounting base 9. The reflector 11 and the laser rangefinder 8 are sealed and protected by the protective shell and elastic protective pad to prevent them from being deformed and damaged during transportation, which would affect the accuracy of the diagonal measurement. At the same time, a silicone desiccant pack 603 is also snapped and installed on the inner wall of the second protective shell 601. The silicone desiccant pack 603 can keep the laser rangefinder 8 dry during transportation, preventing moisture from damaging the circuit of the laser rangefinder 8, thereby increasing the service life of the measuring device.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the diagonal length of a civil defense project entrance, comprising a civil defense entrance body (1), characterized in that: The bottom inner surface of the air-raid shelter doorway body (1) is equipped with a first mounting angle plate (2). Two No. 1 mounting blocks (7) are fixedly installed on the upper surface of the first mounting angle plate (2). A No. 1 rotating shaft (10) is rotatably installed between the two No. 1 mounting blocks (7). A No. 1 mounting seat (9) is fixedly installed on the surface of the No. 1 rotating shaft (10). A laser rangefinder (8) is fixedly installed on one side of the No. 1 mounting seat (9). A second protection mechanism (6) is snapped onto the same side of the No. 1 mounting seat (9). A second protection mechanism (6) is installed on the top inner surface of the air-raid shelter doorway body (1). The second mounting angle plate (3) has two second mounting blocks (12) fixedly mounted on its lower end face. A second rotating shaft (13) is rotatably mounted between the two second mounting blocks (12). A second mounting seat (14) is fixedly mounted on the surface of the second rotating shaft (13). A reflector block (11) is fixedly mounted on one side of the second mounting seat (14). A first protection mechanism (5) is snapped onto the same side of the second mounting seat (14). A drive mechanism (4) is fixedly mounted on one side of both the first rotating shaft (10) and the second rotating shaft (13).

2. The device for measuring the diagonal length of a civil defense engineering entrance according to claim 1, characterized in that: The drive mechanism (4) includes a first housing (401), a drive motor (404) is fixedly installed on one side of the first housing (401), and a coupling (405) is fixedly installed at the output end of the drive motor (404).

3. The device for measuring the diagonal length of a civil defense engineering entrance opening according to claim 2, characterized in that: A battery (402) is snapped into the inside of the first outer casing (401), and a snap-fit ​​plate (403) is snapped into the upper surface of the first outer casing (401).

4. The device for measuring the diagonal length of a civil defense engineering entrance according to claim 1, characterized in that: The first protective mechanism (5) includes a first protective shell (501), a first elastic protective pad (502) is fixedly installed on the inner rear wall of the first protective shell (501), and a first snap-fit ​​block (503) is fixedly installed on the front end face of the first protective shell (501).

5. A device for measuring the diagonal length of a civil defense engineering entrance according to claim 1, characterized in that: The second protective mechanism (6) includes a second protective shell (601), a second elastic protective pad (604) is fixedly installed on the inner rear wall of the second protective shell (601), and a second snap-fit ​​block (606) is fixedly installed on the front end face of the second protective shell (601).

6. A device for measuring the diagonal length of a civil defense engineering entrance according to claim 5, characterized in that: Two limiting blocks (602) are fixedly installed on the inner walls of both sides of the second protective shell (601). A silica gel drying bag (603) is snapped between each pair of the multiple limiting blocks (602). A limiting plate (605) is snapped onto the front end face of the multiple limiting blocks (602).

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