Auxiliary device for diagonal detection of civil air defense door
By fixing a positioning frame and a rangefinder on the air-raid shelter door, the operation is simplified and the diagonal measurement is efficient, solving the problems of complex structure and high labor cost in the existing technology, and realizing efficient measurement by a single person.
Patent Information
- Application Number
- CN202422555389.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The existing diagonal detection device for air-raid shelter doors has a complex structure, is cumbersome to operate, requires two people to operate, has low measurement efficiency, and has high labor costs.
Design an auxiliary device for detecting the diagonal of a civil defense door. It uses two sets of positioning frames and a rangefinder body. By fixing them at two opposite corners of the civil defense door, the rangefinder measures the diagonal dimensions, enabling single-person operation.
It simplifies the structure, improves measurement efficiency, reduces labor costs, and ensures measurement accuracy and consistency.
Smart Images

Figure CN223500352U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air defense door detection technology, specifically an auxiliary device for detecting the diagonal of an air defense door. Background Technology
[0002] Civil defense doors are the entrances and exits of civil defense projects. They are generally made of sturdy materials such as steel and can withstand significant impact. After the civil defense doors are manufactured, quality inspection is required. Diagonal inspection is one of the important steps to ensure the quality of civil defense doors. The consistency of the diagonal length reflects whether the rectangular shape of the door is regular and ensures that the door can fit tightly against the door frame when closed, thus providing good protection.
[0003] A search revealed that Chinese Patent Publication No. CN210719031 U discloses a diagonal detection device for a civil defense door leaf. The device includes a mounting bracket with a square mounting column. One side of the mounting column is called a contact surface, and a first through groove is formed on the contact surface. A positioning plate is fixedly connected to the mounting column, and a positioning plate is connected to each of the two vertical sides of the contact surface. The two positioning plates are perpendicular to each other. A square second through groove is formed on the bottom surface of the first through groove. The planes containing the two positioning plates intersect, and the intersecting line is called the boundary line, which is located within the second through groove. A vertical guide column is fixedly installed on the bottom surface of the first through groove, and a lifting block is slidably installed on the guide column. A detection rod is fixedly installed on the lifting block, and the axis of the detection rod coincides with the boundary line. This device is less affected by accessories installed on the surface of the civil defense door leaf during measurement, making it convenient for people to measure the length of the diagonal of the civil defense door leaf.
[0004] However, this device also has the following drawbacks:
[0005] The device has a complex structure and is relatively cumbersome to operate. When measuring large-sized air-raid shelter doors, it requires two people to pull the two ends of the measuring tape to measure the door, resulting in low measurement efficiency and high labor costs. The device does not solve this problem. Utility Model Content
[0006] The purpose of this utility model is to provide an auxiliary device for detecting the diagonal of a civil defense door. By setting two sets of positioning frames, the rangefinder body and the measuring plate can be fixed at two opposite corners of the civil defense door body. The diagonal size of the civil defense door can be obtained by measuring the distance between the rangefinder body and the measuring plate, which greatly improves the measurement efficiency and can be operated by a single person, thereby solving the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] An auxiliary device for detecting the diagonal of a civil defense door includes two sets of positioning components, each of which includes a positioning frame.
[0009] It also includes a fixing component, which includes two sets of abutment plates and a limiting plate. The abutment plates are disposed on one side of the positioning frame, and the limiting plates are fixedly connected to the other side of the positioning frame.
[0010] It also includes a connecting rod, one end of which is fixedly connected to a corner on one side of the positioning frame, and the other end of which is rotatably mounted with a rotating seat;
[0011] It also includes a measuring component, which includes a rangefinder body and a measuring plate. The rangefinder body is fixedly mounted on a mounting base, the mounting base is fixedly connected to a rotating base, and the measuring plate is fixedly connected to another set of rotating bases.
[0012] Preferably, the positioning frame is L-shaped, and the inner wall of the positioning frame is attached to the two adjacent sides at the corner of the main body of the air-raid shelter door.
[0013] Preferably, an anti-slip pad is glued to one side of the abutment plate, and an adjusting screw is rotatably installed on the other side of the abutment plate.
[0014] Preferably, a rotating handle is fixedly installed on one side of the adjusting screw, and a fixing plate is provided between the rotating handle and the clamping plate.
[0015] Preferably, the adjusting screw is threaded into the fixing plate, and the two sets of fixing plates are respectively fixedly connected to the positioning frame.
[0016] Preferably, the rotating seat is threaded with a clamping screw, the bottom of which abuts against the surface of the connecting rod.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] This utility model features a simple and convenient structure with two sets of positioning frames. The rangefinder body and measuring plate can be fixed at two opposite corners of the air-raid shelter door. The diagonal dimension of the air-raid shelter door can be obtained by measuring the distance between the rangefinder body and the measuring plate. This greatly improves measurement efficiency and allows for single-person operation, reducing labor costs. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the main structure of the rangefinder;
[0021] Figure 3 This is a schematic diagram of the measuring plate structure.
[0022] In the diagram: 1. Positioning frame; 2. Clamping plate; 3. Limiting plate; 4. Connecting rod; 5. Rotating seat; 6. Rangefinder body; 7. Measuring plate; 8. Mounting seat; 9. Air defense door body; 10. Anti-slip pad; 11. Adjusting screw; 12. Rotating handle; 13. Fixing plate; 14. Clamping screw. Detailed Implementation
[0023] 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.
[0024] Please see Figures 1-3 This utility model provides a technical solution:
[0025] An auxiliary device for detecting the diagonal of a civil defense door includes two sets of positioning components. The positioning components include a positioning frame 1, which is L-shaped. The inner wall of the positioning frame 1 is attached to the two adjacent sides at the corner of the main body 9 of the civil defense door. The device also includes a fixing component, which includes two sets of abutment plates 2 and a limiting plate 3. The abutment plate 2 is located on one side of the positioning frame 1, and the limiting plate 3 is fixedly connected to the other side of the positioning frame 1. An anti-slip pad 10 is glued to one side of the abutment plate 2, and an adjusting screw 11 is rotatably installed on the other side of the abutment plate 2. A rotating handle 12 is fixedly installed on one side of the adjusting screw 11. A fixing plate 13 is provided between the rotating handle 12 and the abutment plate 2. The adjusting screw 11 is threadedly engaged with the fixing plate 13, and the two sets of fixing plates 13 are respectively fixedly connected to the positioning frame 1.
[0026] By setting the adjusting screw 11, the adjusting screw 11 can be rotated by rotating the handle 12, thereby pushing the clamping plate 2 to press against the body 9 of the air defense door. When used with the positioning frame 1, the measuring component can be fixed at the two opposite corners of the body 9 of the air defense door, which is convenient for measuring the diagonal of the body 9 of the air defense door. After the measuring component is fixed, it can be operated by a single person, which reduces the labor cost of measurement.
[0027] It also includes a connecting rod 4, one end of which is fixedly connected to the corner of the positioning frame 1. The central axis of the connecting rod 4 is perpendicular to the corner of the positioning frame 1. The other end of the connecting rod 4 is rotatably mounted with a rotating seat 5. The surface of the rotating seat 5 is threaded with a clamping screw 14, and the bottom of the clamping screw 14 abuts against the surface of the connecting rod 4.
[0028] By setting the connecting rod 4, the measuring component can be supported and kept away from other accessories on the surface of the air-raid shelter door body 9, avoiding obstruction by other accessories during measurement and reducing the difficulty of measurement. By setting the rotating seat 5, the angle of the rangefinder body 6 and the measuring plate 7 can be adjusted, thereby improving the accuracy of measurement. By setting the clamping screw 14, the angle of the rangefinder body 6 and the measuring plate 7 can be fixed after adjustment to prevent deviation during measurement and thus ensure the accuracy of measurement.
[0029] It also includes a measuring component, which includes a rangefinder body 6 and a measuring plate 7. The rangefinder body 6 is fixedly installed on the mounting base 8. The measuring reference point of the rangefinder body 6 is on the same straight line as the central axis of the connecting rod 4. The mounting base 8 is fixedly connected to the rotating base 5. The measuring plate 7 is fixedly connected to another set of rotating bases 5. The center point of the measuring plate 7 is on the same straight line as the central axis of the other set of connecting rods 4.
[0030] By setting up a rangefinder body 6 and a measuring plate 7, the distance between the rangefinder body 6 and the measuring plate 7 can be measured, thereby obtaining the diagonal dimension of the air defense door body 9. This makes it easier for operators to judge whether the rectangular shape of the air defense door body 9 is regular, ensuring that the air defense door body 9 can fit tightly against the door frame during use, thus playing a good protective role.
[0031] In practical use, move the device to the designated position, move the two sets of positioning frames 1 to the two opposite corners of the main body 9 of the air-raid shelter door, and attach the inner wall of the positioning frame 1 to the two adjacent side surfaces of the main body 9 of the air-raid shelter door. At this time, the corners of the main body 9 of the air-raid shelter door are attached to the corners of the inner wall of the positioning frame 1. Then, rotate the rotating handle 12 in sequence to clamp the clamping plate 2 and the limiting plate 3 on both sides of the main body 9 of the air-raid shelter door, thereby fixing the two sets of positioning frames 1 at the two opposite corners of the main body 9 of the air-raid shelter door. Then, rotate the two sets of rotating seats 5 to rotate the rangefinder body 6 and the measuring plate 7 to the opposite position, and the light spot emitted by the rangefinder body 6 can hit the center of the measuring plate 7. Rotate the two sets of clamping screws 14 to fix the angle between the rangefinder body 6 and the measuring plate 7. By measuring the distance between the rangefinder body 6 and the measuring plate 7, the diagonal dimension of the main body 9 of the air-raid shelter door can be obtained.
[0032] 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. An auxiliary device for detecting the diagonal of a civil defense door, characterized in that: It includes two sets of positioning components, each of which includes a positioning frame (1); It also includes a fixing component, which includes two sets of abutting plates (2) and a limiting plate (3). The abutting plates (2) are disposed on one side of the positioning frame (1), and the limiting plate (3) is fixedly connected to the other side of the positioning frame (1). It also includes a connecting rod (4), one end of which is fixedly connected to the corner of the positioning frame (1), and the other end of which is rotatably mounted with a rotating seat (5); It also includes a measuring component, which includes a rangefinder body (6) and a measuring plate (7). The rangefinder body (6) is fixedly mounted on a mounting base (8). The mounting base (8) is fixedly connected to a rotating base (5). The measuring plate (7) is fixedly connected to another set of rotating bases (5).
2. The auxiliary device for detecting the diagonal of a civil defense door according to claim 1, characterized in that: The positioning frame (1) is L-shaped, and the inner wall of the positioning frame (1) is attached to the two adjacent sides at the corner of the main body (9) of the air defense door.
3. The auxiliary device for detecting the diagonal of a civil defense door according to claim 1, characterized in that: One side of the abutment plate (2) is glued with an anti-slip pad (10), and the other side of the abutment plate (2) is rotatably mounted with an adjusting screw (11).
4. The auxiliary device for detecting the diagonal of a civil defense door according to claim 3, characterized in that: A rotating handle (12) is fixedly installed on one side of the adjusting screw (11), and a fixing plate (13) is provided between the rotating handle (12) and the abutment plate (2).
5. An auxiliary device for detecting the diagonal of a civil defense door according to claim 4, characterized in that: The adjusting screw (11) is threaded into the fixing plate (13), and the two sets of fixing plates (13) are respectively fixedly connected to the positioning frame (1).
6. The auxiliary device for detecting the diagonal of a civil defense door according to claim 1, characterized in that: The rotating seat (5) is threaded with a clamping screw (14), the bottom of which abuts against the surface of the connecting rod (4).
Citation Information
Patent Citations
Diagonal detection device for civil air defense door leaf
CN210719031U