Matching device for measuring opening angle of civil defense door

Abstract

The utility model discloses a matching device for measuring the opening angle of a civil air defense door, which comprises a bevel protractor composed of a rotating shaft and two telescopic rods, the end parts of the two telescopic rods are hinged with the rotating shaft, the bevel protractor is divided into a fixed telescopic rod and a rotating telescopic rod, two ends of the fixed telescopic rod are provided with magnetic fixing blocks, and the rotating telescopic rod is provided with magnetic fixing blocks. Common fixing blocks are arranged at the two ends of the rotating telescopic rod, and a distance measuring part and an angle displayer are further arranged on the rotating telescopic rod; the bevel protractor is made of the telescopic rod, compared with a traditional bevel protractor which cannot stretch out and draw back, the bevel protractor can be suitable for civil air defense doors of different models and sizes, and angle measurement is more convenient; compared with a traditional angle ruler which cannot overcome the problem that the door leaf and the door frame of the civil air defense door are connected through a hinge seat, the rotating shaft can be arranged at the hinge seat and perfectly attached to the door leaf and the door frame of the civil air defense door, and the opening angle of the civil air defense door can be measured more accurately.

Description

Technical Field

[0001] The utility model belongs to the field of civil air defense, and more specifically, the utility model relates to a matching device for measuring the opening angle of a civil air defense door. Background Art

[0002] The utility model is mainly used to measure the opening angle of civil air defense doors at construction sites. Civil air defense doors refer to doors specially built to protect important buildings in urban construction and have multiple functions such as anti-theft, fire prevention, and bulletproof. The opening angle of civil air defense doors should usually be kept at about 90 degrees, which can ensure that the door can be fully opened, and at the same time allow people to quickly enter and exit the door, facilitating emergency evacuation.

[0003] In addition, in some special situations, such as disasters such as earthquakes, people need to flee the house quickly. At this time, the opening angle of the civil defense door should be larger to allow faster escape through the door.

[0004] The existing equipment for measuring the opening angle of civil air defense doors is an angle ruler. There are two major drawbacks of traditional angle rulers for measuring the opening angle of civil air defense doors. First, the size of civil air defense doors varies. The large door leaf of a civil air defense door is about 3m wide, and the small door leaf of a civil air defense door is about 1m wide. The traditional angle rulers on the market cannot be extended or retracted, whether they are fixed rods or telescopic rods. Second, since the door leaf and the door frame of the civil air defense door are connected by a hinge seat, they are not tightly fitted together. The two are separated and misaligned. During the test, the fixed rod of the traditional angle ruler is attached to the door frame, and the rotating rod cannot be measured against the door leaf. The rotating rod can only be controlled to be roughly parallel to the door leaf by visual inspection or measuring the distance from the rotating rod to the door leaf surface with a tape measure. The first visual inspection method is difficult to ensure that the rotating rod of the angle ruler is parallel to the door leaf. Secondly, the method of measuring the distance from the rotating rod to the door leaf surface with a tape measure is cumbersome and requires repeated measurements many times. In addition, it is easy to produce human errors during measurement, and it is impossible to ensure that the rotating rod of the angle ruler is parallel to the door leaf, so it is impossible to accurately measure the opening angle of the civil air defense door. Utility Model Content

[0005] In view of the above problems, the utility model provides a matching device that can measure the opening angle of the civil air defense door. On the one hand, the matching device can adjust the side length of the angle ruler according to the size of the civil air defense door. On the other hand, the distance to the door leaf is measured by a laser rangefinder to ensure that the other side of the angle ruler is parallel to the door leaf. In this way, the opening angle of the civil air defense door can be measured directly and clearly.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A matching device for measuring the opening angle of a civil air defense door comprises an angle ruler consisting of a rotating shaft and two telescopic rods, both ends of the two telescopic rods are hinged to the rotating shaft, the angle ruler is divided into a fixed telescopic rod and a rotating telescopic rod, wherein both ends of the fixed telescopic rod are provided with magnetic fixing blocks, both ends of the rotating telescopic rod are provided with ordinary fixing blocks, and the rotating telescopic rod is also provided with a distance measuring part and an angle display.

[0008] The utility model discloses a matching device for measuring the opening angle of a civil air defense door. The distance measuring part comprises a slider and a laser distance meter. Two laser distance meters are provided. The slider is arranged between two common fixing blocks on the shaft of a rotating telescopic rod. The first laser distance meter and the second laser distance meter are respectively arranged in the common fixing block and the slider at one end of the rotating telescopic rod away from the rotating axis.

[0009] The utility model discloses a matching device for measuring the opening angle of a civil air defense door. The angle display is arranged on the surface of a common fixed block on a rotating telescopic rod close to one end of a rotating shaft.

[0010] The utility model discloses a matching device for measuring the opening angle of a civil air defense door. A distance scale is arranged between the rod bodies between two common fixing blocks of the rotating telescopic rod.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The telescopic rod is used to make the angle ruler. Compared with the traditional angle ruler that cannot be telescoped, this application can be applied to civil air defense doors of various models and sizes, making angle measurement more convenient.

[0013] 2. Compared with the traditional angle ruler, which cannot overcome the problem that the door leaf and door frame of the civil air defense door are connected through the hinge seat, the rotating shaft of the present application can be set at the hinge seat, perfectly fitting the door leaf and door frame, and can measure the opening angle of the civil air defense door more accurately.

[0014] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following is a brief description of the contents and symbols in the drawings of this specification:

[0016] Figure 1 It is a schematic diagram of the utility model;

[0017] The markings in the figure are: 1. Magnetic fixed block; 2. Telescopic rod; 3. Rotation axis; 4. Angle display; 5. Ordinary fixed block; 6. First laser rangefinder; 7. Second laser rangefinder; 8. Moving block; DETAILED DESCRIPTION

[0018] The following, with reference to the accompanying drawings, describes the embodiments and further explains the specific implementation methods of the utility model, such as the shapes and structures of the components involved, the relative positions and connection relationships between the components, the functions and working principles of the components, the manufacturing process and the operation and use methods, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model.

[0019] A matching device for measuring the opening angle of a civil air defense door comprises an angle ruler consisting of a rotating shaft 3 and two telescopic rods 2. Both ends of the two telescopic rods 2 are hinged to the rotating shaft 3. The angle ruler is divided into a fixed telescopic rod 2 and a rotating telescopic rod 2. Both ends of the fixed telescopic rod 2 are provided with magnetic fixing blocks 1, and both ends of the rotating telescopic rod 2 are provided with ordinary fixing blocks 5. The rotating telescopic rod 2 is also provided with a distance measuring part and an angle display 4.

[0020] The distance measuring part includes a slider 6 and a laser distance meter. Two laser distance meters are provided. The slider 6 is arranged on the shaft of the rotating telescopic rod 2 between two common fixed blocks 5. The first laser distance meter 7 and the second laser distance meter 8 are respectively arranged in the common fixed block 5 and the slider 6 at one end of the rotating telescopic rod 2 away from the rotating axis 3.

[0021] The laser distance meter used in the utility model is a one-dimensional laser distance meter, and the product is a LS series laser distance meter of the Keyence brand, which can be purchased directly, and the relevant procedures and installation are all known existing technologies.

[0022] The angle display 4 is arranged on the surface of a common fixing block 5 on the rotating telescopic rod 2 close to one end of the rotating shaft.

[0023] The angle display 4 used in the utility model is of DUCH brand, model AG168, and rated voltage is 220V. The product is purchased directly, and the related procedures and installation are all known prior art.

[0024] A distance scale is provided between the rod body between the two common fixing blocks 5 of the rotating telescopic rod 2.

[0025] Rotating the telescopic rod 2 to set the distance scale can, on the one hand, be used initially when the laser rangefinder fails, and on the other hand, can be used to detect whether the laser rangefinder has a large error that needs to be calibrated and whether the laser rangefinder fails.

[0026] Working principle and method

[0027] 1. According to the size of the civil air defense door, adjust the length of the two telescopic rods 2 respectively;

[0028] 2. Attach the magnetic fixing block 1 of the fixed telescopic rod 2 of the angle ruler to the lower sill of the door frame through magnetic attraction, and make it flush with one side of the lower sill of the door frame;

[0029] 3. Open the rotating telescopic rod 2 of the angle ruler to the direction of the door leaf opening, so that the rotating telescopic rod 2 of the angle ruler is roughly parallel to the door leaf (rough adjustment);

[0030] 4. Turn on the first laser rangefinder 6 and the second laser rangefinder 7 (the two laser rangefinders are flush), measure the distances from the two laser rangefinders to the door leaf surface respectively, and read the relevant data 1 and data 2;

[0031] 5. Fine-tune the opening angle of the rotating telescopic rod 2 of the angle ruler until the distance data 1 and data 2 from the first laser rangefinder 7 and the second laser rangefinder 8 to the door leaf surface are the same (accurate to mm). Data 1 and data 2 are the same, that is, the distances from the two laser rangefinders at both ends of the rotating telescopic rod to the surface of the civil air defense door are the same. According to the principle of two points being a straight line, the sameness of the two data indicates that the rotating telescopic rod is parallel to the surface of the civil air defense door.

[0032] 6. Fix the opening direction of the angle ruler, and the angle on the test angle display 4 is the opening angle of the door leaf. According to the principle of equal interior angles in mathematics, when the rotating telescopic rod is parallel to the surface of the civil air defense door leaf, the angle between the rotating telescopic rod and the fixed telescopic rod is the angle between the civil air defense door leaf and the fixed telescopic rod.

[0033] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A matching device for measuring the opening angle of a civil air defense door, characterized in that: The utility model comprises an angle ruler consisting of a rotating shaft and two telescopic rods. Both ends of the two telescopic rods are hingedly connected to the rotating shaft. The angle ruler is divided into a fixed telescopic rod and a rotating telescopic rod. Both ends of the fixed telescopic rod are provided with magnetic fixing blocks, and both ends of the rotating telescopic rod are provided with ordinary fixing blocks. The rotating telescopic rod is also provided with a distance measuring part and an angle display.

2. A matching device for measuring the opening angle of a civil air defense door according to claim 1, characterized in that: The distance measuring part includes a slider and a laser distance meter. Two laser distance meters are provided. The slider is arranged between two common fixing blocks on the rotating telescopic rod body. The first laser distance meter and the second laser distance meter are respectively arranged in the common fixing block and the slider at one end of the rotating telescopic rod away from the rotating axis.

3. The device for measuring the opening angle of a civil air defense door according to claim 1, characterized in that: The angle display is arranged on the surface of a common fixed block on the rotating telescopic rod close to one end of the rotating shaft.

4. The device for measuring the opening angle of a civil air defense door according to claim 2, characterized in that: A distance scale is arranged between the rod body between the two common fixing blocks of the rotating telescopic rod.

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