Device for detecting air tightness of civil defense door

Abstract

The utility model relates to a device for detecting air tightness of a civil defense door, which comprises a bottom plate and a connecting frame, a connecting rod is fixed on the lower surface of the connecting frame, an electromagnet is fixed on the bottom surface of the connecting rod, and a bottom box is fixed on the lower surface of the bottom plate; the adjusting assembly is arranged in the bottom box; the bearing assembly is arranged on the top surface of the bottom plate, the bearing assembly comprises four detection boxes which are fixed to the top surface of the bottom plate and are distributed at equal intervals, supporting plates are fixed to the inner circumferential walls of the detection boxes, and inserting holes are formed in the positions, away from the circle center of the bottom plate, of the four detection boxes. According to the device for detecting the air tightness of the civil air defense door, the adjusting assembly is arranged, the detection box is provided with four stations, four civil air defense doors can be detected at the same time, the detection efficiency is improved, the situation that multiple detection devices need to be purchased in a traditional mode is avoided, the detection efficiency is guaranteed, and the cost for detecting the civil air defense door by an enterprise is reduced; and the purpose of saving expenses is achieved for enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense engineering, in particular to a device for detecting the air tightness of a civil air defense door. Background Art

[0002] Civil air defense projects (abbreviated as civil air defense projects) refer to underground protective buildings built separately to ensure the sheltering of personnel and materials, civil air defense command, and medical rescue in wartime, as well as basements that can be used for air defense in wartime built in combination with ground buildings; and civil air defense doors are the doors at the entrances and exits of civil air defense projects. The classification of civil air defense doors is relatively clear, and there are ordinary single-leaf and double-leaf protective closed doors, as well as single-leaf and double-leaf protective closed doors with movable thresholds, and other types and specifications. Civil air defense doors must meet the requirements of protection and sealing. Therefore, civil air defense doors must be tested for air tightness after production is completed, which is generally achieved through air tightness detection devices.

[0003] For example, in the Chinese utility model patent: announcement number CN220039749U, an air tightness detection device for a civil air defense door is disclosed, and its technical solution is as follows: it includes a detection box, a support assembly, a first annular sealing gasket and a color-changing paper, the side wall of the detection box is provided with an air outlet and a water inlet, the air outlet is lower than the water inlet, the air outlet is connected to a vacuum pump, and the water inlet is connected to a water source, the support assembly is used to support the civil air defense door, the support assembly is arranged in the detection box and is located between the air outlet and the water inlet, the support assembly includes a plurality of annular support frames, and the plurality of annular support frames are detachably connected in sequence from the edge to the center of the detection box to change the frame opening area of ​​the plurality of annular support frames, the civil air defense door is placed at the frame opening of the annular support frame, the first annular sealing gasket is arranged between the civil air defense door and the annular support frame to block the gap between the two, the color-changing paper is arranged in the detection box, and the downward projection of the civil air defense door falls entirely on the color-changing paper.

[0004] The applicant has found through searching that there are still some problems in the above technical scheme that need to be improved. For example, in the process of air tightness detection of civil air defense doors, by setting up a detection box, only one civil air defense door can be detected at a time. When a large number of civil air defense doors need to be tested for air tightness, more equipment needs to be purchased to test the civil air defense doors to ensure the efficiency of the detection. However, enterprises will waste more financial resources if they purchase more testing equipment, and also need to waste more human resources to test the equipment, which makes it necessary to spend more financial resources when testing a large number of civil air defense doors. For this reason, we propose a device for detecting the air tightness of civil air defense doors to solve the above problems, thereby achieving the purpose of saving the expenses required for air tightness detection for enterprises. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a device for detecting the air tightness of civil air defense doors, which has the advantage of reducing the detection cost of the enterprise and solves the problem that one device can only detect one civil air defense door at a time, resulting in low detection efficiency.

[0006] To achieve the above object, the utility model provides the following technical solution: a device for detecting the air tightness of a civil air defense door, comprising a bottom plate and a connecting frame, a connecting rod is fixed to the lower surface of the connecting frame, an electromagnet is fixed to the bottom surface of the connecting rod, and a bottom box is fixed to the lower surface of the bottom plate;

[0007] Adjustment component: the adjustment component is arranged inside the bottom box;

[0008] Bearing assembly: the bearing assembly is arranged on the top surface of the bottom plate;

[0009] The bearing assembly includes four equidistantly distributed detection boxes fixed on the top surface of the base plate, a support plate is fixed to the inner wall of the detection box, the four detection boxes are provided with sockets away from the center of the base plate, the interiors of the four sockets are slidably connected with a disassembly plate, positioning blocks are fixed at both ends of the disassembly plate, two handles are fixed on the disassembly plate away from the center of the base plate, and a test paper is provided inside the disassembly plate.

[0010] Furthermore, mounting holes are provided at both ends of the detection box, and observation glasses are installed inside the mounting holes. The detection box is a box body with a hollow interior and a missing top surface, and the upper surface of the support plate is placed with a human defense door body.

[0011] Furthermore, a water inlet pipe is fixed on the side of the detection box, a water outlet pipe is fixed near the center of the bottom plate of the detection box, and control valves are fixed on the outer surfaces of the water inlet pipe and the water outlet pipe.

[0012] Furthermore, the ends of the two jacks facing away from each other are connected with positioning holes, and the two positioning blocks are respectively located inside the positioning holes and are slidably connected thereto.

[0013] Furthermore, a placement hole is provided in the disassembly plate, a detection hole is provided on the top surface of the disassembly plate, the diameter of the placement hole is larger than the detection hole, one end of the placement hole away from the center of the bottom plate passes through the disassembly plate, and the test paper is located inside the placement hole.

[0014] Furthermore, the adjustment component includes a servo motor fixed to the bottom wall of the inner cavity of the bottom box, a rotating shaft is fixed to the output end of the servo motor, a driving sprocket is fixed to the outer surface of the rotating shaft, a transmission chain is transmission-connected to the outer surface of the driving sprocket, an end of the transmission chain away from the driving sprocket is transmission-connected to a driven sprocket, a rotating rod is fixed to the inner circumferential wall of the driven sprocket, and a cylinder is fixed to the upper surface of the rotating rod.

[0015] Furthermore, the output end of the cylinder is fixed to the bottom surface of the connecting frame, the outer surface of the cylinder is rotatably connected to the bottom box through a bearing, and the bottom end of the cylinder is located inside the bottom box.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] 1. The device for detecting the air tightness of civil air defense doors sets the detection box to four workstations by setting the adjustment components, so that four civil air defense doors can be detected at the same time, which improves the detection efficiency, avoids the need to purchase multiple detection equipment in the traditional way to ensure the detection efficiency, reduces the cost of enterprises for detecting civil air defense doors, and brings the purpose of saving expenses for enterprises.

[0018] 2. The device for detecting the air tightness of civil air defense doors is equipped with a bearing component. When detecting the civil air defense doors, civil air defense doors that fail to meet the air tightness requirements will leak water, thereby wetting the test paper. The setting of the bearing component allows the staff to quickly replace the test paper, thereby achieving the purpose of improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the detection box of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the load-bearing assembly of the utility model;

[0022] Figure 4 It is a schematic diagram of the planar structure inside the bottom box of the utility model.

[0023] In the figure: 1. bottom plate; 2. connecting frame; 3. connecting rod; 4. electromagnet; 5. bottom box; 6. detection box; 7. support plate; 8. disassembly plate; 9. positioning block; 10. handle; 11. test paper; 12. servo motor; 13. rotating shaft; 14. driving sprocket; 15. transmission chain; 16. driven sprocket; 17. rotating rod; 18. cylinder. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1In this embodiment, a device for detecting the air tightness of a civil air defense door includes a base plate 1 and a connecting frame 2, a connecting rod 3 is fixed to the lower surface of the connecting frame 2, an electromagnet 4 is fixed to the bottom surface of the connecting rod 3, and a bottom box 5 is fixed to the lower surface of the base plate 1; an adjusting component: the adjusting component is arranged inside the bottom box 5; a bearing component: the bearing component is arranged on the top surface of the base plate 1.

[0026] See also Figure 2 and Figure 3 In order to replace the wetted test paper 11, in this embodiment, the bearing assembly includes four equidistantly distributed detection boxes 6 fixed on the top surface of the bottom plate 1, and mounting holes are opened at both ends of the detection box 6. An observation glass is installed inside the mounting hole. The detection box 6 is a box body with a hollow interior and a missing top surface. A water inlet pipe is fixed on the side of the detection box 6, and a water outlet pipe is fixed on the detection box 6 near the center of the bottom plate 1. Control valves are fixed on the outer surfaces of the water inlet pipe and the water outlet pipe. A support plate 7 is fixed on the inner peripheral wall of the detection box 6. The upper surface of the support plate 7 is placed on the main body of the air defense door. The four detection boxes 6 are away from the bottom. There are jacks at the center of the plate 1, and the ends opposite to each other are connected with positioning holes. The insides of the four jacks are slidably connected with a disassembly plate 8, and a placement hole is provided in the disassembly plate 8. A detection hole is provided on the top surface of the disassembly plate 8. The diameter of the placement hole is larger than the detection hole. The end of the placement hole away from the center of the bottom plate 1 passes through the disassembly plate 8. Positioning blocks 9 are fixed at both ends of the disassembly plate 8. The two positioning blocks 9 are respectively located inside the positioning holes and are slidably connected with them. Two handles 10 are fixed on the disassembly plate 8 away from the center of the bottom plate 1. A test paper 11 is provided inside the disassembly plate 8, and the test paper 11 is located inside the placement hole.

[0027] By setting up the bearing assembly as mentioned above, when testing the civil air defense door, the civil air defense door that does not meet the air tightness requirements will leak water, thereby wetting the test paper 11. The setting of the bearing assembly allows the staff to quickly replace the test paper 11, thereby achieving the purpose of improving the detection efficiency.

[0028] When the wetted test paper 11 needs to be replaced, first, the disassembly plate 8 is moved out of the detection box 6 through the two handles 10, and the test paper 11 is further pulled out from the insertion hole to achieve the purpose of disassembling the test paper 11, and the test paper 11 to be replaced is further inserted into the disassembly plate 8 through the insertion hole, and the test paper 11 is inserted into the top of the insertion hole through the detection hole on the disassembly plate 8, so as to achieve the replacement of the test paper 11, and the disassembly plate 8 is reinserted into the detection box 6 by further aligning the positioning block 9 with the positioning hole.

[0029] See also Figure 4In order to simultaneously perform air tightness detection on the civil air defense door bodies on four workstations, the present embodiment includes a servo motor 12 fixed on the bottom wall of the inner cavity of the bottom box 5, and a rotating shaft 13 is fixed on the output end of the servo motor 12, and a driving sprocket 14 is fixed on the outer surface of the rotating shaft 13. The outer surface of the driving sprocket 14 is transmission-connected with a transmission chain 15, and the end of the transmission chain 15 away from the driving sprocket 14 is transmission-connected with a driven sprocket 16, and a rotating rod 17 is fixed on the inner circumferential wall of the driven sprocket 16, and a cylinder 18 is fixed on the upper surface of the rotating rod 17, and the output end of the cylinder 18 is fixed to the bottom surface of the connecting frame 2, and the outer surface of the cylinder 18 is rotationally connected to the bottom box 5 through a bearing, and the bottom end of the cylinder 18 is located inside the bottom box 5.

[0030] By setting the adjustment component, the detection box 6 is set to four stations, and four civil air defense doors can be tested at the same time, which improves the efficiency of the test, avoids the need to purchase multiple testing equipment in the traditional way to ensure the test efficiency, reduces the cost of the enterprise to test the civil air defense door, and brings the purpose of saving expenses for the enterprise.

[0031] During operation, when the civil air defense door needs to be placed in the four detection boxes 6 respectively, the civil air defense door is firstly adsorbed by the electromagnet 4, and then the servo motor 12 is started. When the output shaft of the servo motor 12 rotates, it will drive the rotating shaft 13 to rotate. During the rotation of the rotating shaft 13, the driving sprocket 14 fixed on the outer surface of the rotating shaft 13 will be driven to rotate. During the rotation of the driving sprocket 14, the driving sprocket 14 will drive the driven sprocket 16 to rotate through the transmission chain 15 set outside it. During the rotation of the driven sprocket 16, it will drive The rotating rod 17 fixed to the driving and driven sprockets 16 rotates, further driving the cylinder 18 to rotate, and the cylinder 18 is moved to the corresponding positions of the four detection boxes 6 respectively. Through the action of the cylinder 18, the civil defense door is driven to be placed in the detection box 6, and further under the action of the electromagnet 4, the electromagnet stops adsorbing the civil defense door, so that the civil defense door is placed on the upper surface of the support plate 7, and water is further injected into the detection box 6 through the water inlet pipe. When the detection box 6 is filled with water, the state on the test paper 11 is observed through the observation glass to judge whether the air tightness of the civil defense door is qualified or not.

[0032] It should be noted that setting the support plate 7 to be inclined so as to facilitate drainage in the detection box 6 is a well-known technology to those skilled in the art, and the angle of the support plate 7 will not be described in detail in this application.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the air tightness of a civil air defense door, characterized in that: It comprises a bottom plate (1) and a connecting frame (2), a connecting rod (3) being fixed to the lower surface of the connecting frame (2), an electromagnet (4) being fixed to the bottom surface of the connecting rod (3), and a bottom box (5) being fixed to the lower surface of the bottom plate (1); Adjustment component: the adjustment component is arranged inside the bottom box (5); Bearing assembly: the bearing assembly is arranged on the top surface of the bottom plate (1); The bearing assembly comprises four equidistantly distributed detection boxes (6) fixed on the top surface of the bottom plate (1), a support plate (7) being fixed to the inner peripheral wall of the detection box (6), a plug hole being provided at a position away from the center of the bottom plate (1) at each of the four detection boxes (6), a disassembly plate (8) being slidably connected inside the four plug holes, positioning blocks (9) being fixed at both ends of the disassembly plate (8), two handles (10) being fixed at a position away from the center of the bottom plate (1), and a test paper (11) being provided inside the disassembly plate (8).

2. The device for detecting air tightness of a civil air defense door according to claim 1, characterized in that: Both ends of the detection box (6) are provided with mounting holes, and observation glasses are installed inside the mounting holes. The detection box (6) is a box body with a hollow interior and a missing top surface, and the upper surface of the support plate (7) is placed with a human air defense door body.

3. The device for detecting air tightness of civil air defense door according to claim 1, characterized in that: A water inlet pipe is fixed on the side of the detection box (6), and a water outlet pipe is fixed near the center of the bottom plate (1) of the detection box (6). Control valves are fixed on the outer surfaces of the water inlet pipe and the water outlet pipe.

4. The device for detecting air tightness of civil air defense door according to claim 1, characterized in that: The ends of the two jacks facing away from each other are also connected to a positioning hole, and the two positioning blocks (9) are respectively located inside the positioning holes and are slidably connected thereto.

5. The device for detecting air tightness of civil air defense door according to claim 1, characterized in that: A placement hole is provided in the disassembly plate (8), and a detection hole is provided on the top surface of the disassembly plate (8). The diameter of the placement hole is larger than the detection hole. An end of the placement hole away from the center of the bottom plate (1) passes through the disassembly plate (8), and the test paper (11) is located inside the placement hole.

6. The device for detecting air tightness of civil air defense door according to claim 1, characterized in that: The adjustment assembly comprises a servo motor (12) fixed to the bottom wall of the inner cavity of the bottom box (5); a rotating shaft (13) is fixed to the output end of the servo motor (12); a driving sprocket (14) is fixed to the outer surface of the rotating shaft (13); a transmission chain (15) is transmission-connected to the outer surface of the driving sprocket (14); an end of the transmission chain (15) away from the driving sprocket (14) is transmission-connected to a driven sprocket (16); a rotating rod (17) is fixed to the inner circumferential wall of the driven sprocket (16); and a cylinder (18) is fixed to the upper surface of the rotating rod (17).

7. The device for detecting air tightness of civil air defense door according to claim 6, characterized in that: The output end of the cylinder (18) is fixed to the bottom surface of the connecting frame (2), the outer surface of the cylinder (18) is rotatably connected to the bottom box (5) via a bearing, and the bottom end of the cylinder (18) is located inside the bottom box (5).

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