Air tightness detection device for civil air defense doors

Abstract

The present invention relates to the field of civil defense doors, and discloses a civil defense door air tightness detection device, comprising: a support for supporting the entire device, a sealed room installed on the upper surface of the support, a protective mechanism provided on the upper surface of the support, a locking assembly provided on the inner wall of the support, and a trigger assembly provided near the center of the upper surface of the support; the protective mechanism is used to prevent the civil defense door from opening, and the protective mechanism includes a blocking block, the blocking block passes through and is slidably connected to the upper surface of the support, and the blocking block is elastically connected to the inner wall of the support via a supporting spring. In the present invention, by providing a protective structure, when performing a test, when the air pressure inside the sealed room is high, the gas will push the piston plate to drive the extrusion block to move, and the extrusion block will squeeze the sliding block so that the sliding block is retracted into the interior of the blocking block. At this time, the sliding block will guide the locking block to retract into the interior of the blocking block through the guide groove.

Description

Technical Field

[0001] The present invention relates to the field of civil air defense doors, and in particular to an air tightness detection device for civil air defense doors. Background Art

[0002] Civil air defense doors are protective equipment at the entrances and exits of civil air defense projects. They are mainly used to prevent shock waves, shrapnel, toxic gases and other harmful substances from entering the interior of civil air defense projects during wars, air raids or other sudden disasters, to ensure the safety of personnel and materials in the projects. At the same time, they also have functions such as normal passage and protective sealing.

[0003] When leaving the factory, the performance of the civil air defense door needs to be tested, including air tightness testing. In the existing technology, the common method is to install the civil air defense door at a preset room opening, and then inject gas into the room. By continuously testing the air pressure inside the room, it can be determined whether the air tightness of the civil air defense door meets the standard. After the test is completed, the high-pressure gas inside the room needs to be released. If the air pressure value inside the room does not reach the safe value when the civil air defense door is opened, the door will suddenly open outward under the push of the high-pressure gas, which may cause personal injury. For this reason, a civil air defense door air tightness detection device is proposed to solve the above problem. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems raised in the above-mentioned background technology, and then propose an air tightness detection device for civil air defense doors. The present invention sets a protective structure. When the air pressure inside the sealed room is high during detection, the gas will push the piston plate to drive the extrusion block to move. The extrusion block will squeeze the sliding block so that the sliding block returns to the inside of the blocking block. At the same time, the sliding block will guide the locking block back to the inside of the blocking block through the guide groove. In this way, the support spring will push the blocking block to pop out. The pop-up of the blocking block will block the civil air defense door, preventing the operator from opening the civil air defense door at will. This can reduce the probability of personal injury and improve the safety of the detection work.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A device for detecting air tightness of a civil air defense door, comprising a support, the support being used to support the entire device, a sealing chamber being mounted on the upper surface of the support, a protective mechanism being provided on the upper surface of the support, a locking assembly being provided on the inner wall of the support, and a trigger assembly being provided near the center of the upper surface of the support;

[0007] The cam is fixedly provided with a protrusion at the front and rear ends of the support, and the inner wall of the support is elastically connected to the inner wall of the support by a supporting spring, and the front and rear ends of the protrusion are fixedly connected to the inner wall of the support. The inner wall of the support is provided with a sliding groove, and the protrusion slides on the inner wall of the sliding groove, and the rear end of the blocking block passes through and is slidably connected to the sliding plate. The rear end of the blocking block passes through and is slidably connected to the locking block, and the inner wall of the sliding groove is provided with a locking groove adapted to the locking block, the outer wall of the locking block is provided with a slider, the inner wall of the sliding plate is provided with a guide groove adapted to the slider, the sliding plate and the inner wall of the blocking block are elastically connected to the inner wall of the blocking block by a locking spring, and the upper surface of the blocking block is provided with an unlocking component;

[0008] The trigger assembly includes a piston plate, the piston of the piston plate is connected to the inner wall of the support, and the right end of the piston plate is fixedly connected to the extrusion block.

[0009] Preferably, the trigger assembly further comprises a piston block, which penetrates and is connected to the upper surface of the support, and the lower surface of the piston block is fixedly connected to a support frame, and the support frame and the piston plate are connected to each other via a hinge plate.

[0010] Preferably, the upper surface of the support is fixedly connected to a guide frame, the upper surface of the piston block is fixedly connected to an anti-slip plate, the anti-slip plate is slidably connected to the inner wall of the guide frame, and the anti-slip plate is elastically connected to the upper surface of the support via a reset spring.

[0011] Preferably, the unlocking assembly includes a pull rod, the lower end of which is fixedly connected to the upper end of the sliding plate, and the pull rod passes through and is slidably connected to the upper surface of the blocking block.

[0012] Preferably, the upper surface of the blocking block is rotatably connected to a handle, the inner wall of the handle is provided with a pull rod, and the pull rod slides on the inner wall of the accommodating groove.

[0013] Preferably, the locking assembly includes a support platform, the support platform is slidably connected to the inner wall of the support, and one end of the support frame close to the support platform is arranged to be inclined.

[0014] Preferably, the inner wall of the support is fixedly connected to a guide rod, and the support platform is slidably connected to the outer wall of the guide rod.

[0015] Preferably, a double-threaded rod is passed through and slidably connected to the inner wall of the support, the support platform is threadedly connected to the outer wall of the double-threaded rod, and the front and rear ends of the double-threaded rod are fixedly connected with a hexagonal head.

[0016] Preferably, both the front and rear ends of the support are fixedly connected to a protective frame, and the outer wall of the protective frame is rotatably connected to a cover plate.

[0017] Preferably, an air inlet pipe and an exhaust pipe are sequentially provided on the front surface of the sealed room from top to bottom, and an observation window is provided on the rear surface of the sealed room.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention sets a protective structure. When the air pressure inside the sealed room is high during detection, the gas will push the piston plate to drive the extrusion block to move. The extrusion block will squeeze the sliding block, causing the sliding block to return to the inside of the blocking block. At the same time, the sliding block will guide the locking block back to the inside of the blocking block through the guide groove. In this way, the support spring will push the blocking block to pop out. The popping out of the blocking block will block the civil air defense door to prevent the operator from opening the civil air defense door at will. This can reduce the probability of personal injury and improve the safety of the detection work.

[0020] 2. The present invention is provided with a locking spring. When the blocking block pops up upward under the action of the supporting spring, the locking spring will push the sliding plate to move it downward and reset. At this time, the sliding plate will drive the locking block to pop out again. In this way, no matter whether there is high pressure inside the sealed room, the operator must first unlock the protective mechanism before opening the civil air defense door. With this structure, the operator can be reminded that the door has been tested and has not been opened after the test. By reminding the operator, safety can be further improved.

[0021] 3. The present invention is provided with a trigger component. When the operator actively enters the interior of the device, the operator can trigger the protective mechanism by stepping on the anti-slip plate. In this way, the blocking block will block the civil air defense door and make it unable to close, thus preventing people from being accidentally trapped inside the device.

[0022] 4. The present invention is provided with a locking assembly. When protection is not needed, the support platform can be driven to move to the middle position of the device by rotating the double-headed threaded rod. In this way, the support frame can be supported by the support platform. At this time, the support frame will not be able to move downward, and the protection mechanism cannot be triggered by the trigger assembly, thereby preventing accidental locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the overall device of the present invention in an open state;

[0025] Figure 3 Schematic diagram of the three-dimensional structure cross section of the support in the present invention;

[0026] Figure 4Schematic diagram of the middle cross-section of the three-dimensional structure of the support in the present invention;

[0027] Figure 5 Schematic diagram of the three-dimensional structure of the blocking block in the present invention;

[0028] Figure 6 Schematic diagram of the three-dimensional structure of the blocking block in the present invention;

[0029] Figure 7 Schematic diagram of the three-dimensional structure cross section of the support platform in the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the double-threaded rod in the present invention.

[0031] in:

[0032] 1. Support;

[0033] 2. Sealed room; 21. Air inlet pipe; 22. Exhaust pipe; 23. Observation window;

[0034] 3. Protective mechanism; 31. Blocking block; 32. Bump; 33. Sliding plate; 34. Guide groove; 35. Sliding block; 36. Unlocking assembly; 361. Handle; 362. Pull rod; 363. Receiving groove; 37. Support spring; 38. Locking spring; 39. Locking groove; 310. Locking block; 311. Sliding groove;

[0035] 4. Trigger assembly; 41. Anti-skid plate; 42. Piston block; 43. Support frame; 44. Hinge plate; 45. Piston plate; 46. Extrusion block; 47. Guide frame; 48. Return spring;

[0036] 5. Locking assembly; 51. Guide rod; 52. Support platform; 53. Protective frame; 54. Cover plate; 55. Hexagonal head; 56. Double-ended threaded rod. DETAILED DESCRIPTION

[0037] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0038] like Figure 1 、 Figure 2 and Figure 5As shown, an embodiment of the present invention is: a civil defense door air tightness detection device, including a support 1, the support 1 is used to support the entire device, the upper surface of the support 1 is horizontal, and can be used to support a sealed room 2, the upper surface of the support 1 is installed with a sealed room 2, the left end, the right end and the lower end of the sealed room 2 are all open, and the operator can enter the interior of the sealed room 2 through the left and right openings. When testing, the civil defense door can be directly installed on the left and right ends of the sealed room 2, so that two groups of civil defense doors can be tested at the same time, the upper surface of the support 1 is provided with a protective mechanism 3 for blocking the civil defense door, the inner wall of the support 1 is provided with a locking component 5 for limiting the operation of the protective mechanism 3, and the upper surface of the support 1 is provided with a trigger component 4 near the center position, and the protective mechanism 3 is used to prevent the civil defense door from opening. When the door is opened, the protective mechanism 3 includes a blocking block 31 for directly blocking the civil defense door. The blocking block 31 passes through and is slidably connected to the upper surface of the support 1. The blocking block 31 can slide up and down on the inner wall of the support 1. The blocking block 31 is elastically connected to the inner wall of the support 1 by a supporting spring 37. The supporting spring 37 will always push the blocking block 31 upward. The front and rear ends of the blocking block 31 are fixedly connected with a protrusion 32 for limiting the moving range of the blocking block 31. The inner wall of the support 1 is provided with a sliding groove 311 for accommodating the protrusion 32. The protrusion 32 slides on the inner wall of the sliding groove 311. The sliding groove 311 can limit and guide the sliding of the protrusion 32. The lower end of the blocking block 31 passes through and is slidably connected with a sliding plate 33. The sliding plate 33 is set to be U-shaped, which can slide up and down on the inner wall of the blocking block 31.

[0039] like Figure 4-Figure 6 When the locking block 310 is in the locking groove 39, the blocking block 31 is restricted from moving up and down. The outer wall of the locking block 310 is provided with a slider 35 for driving the locking block 310 to move. The inner wall of the sliding plate 33 is provided with a guide groove 34 that is adapted to the slider 35. When the sliding plate 33 moves upward, it squeezes the slider 35 through the guide groove 34, so that the locking block 310 can be driven to move toward the inside of the sliding plate 33 through the slider 35. The sliding plate 33 is elastically connected to the inner wall of the blocking block 31 by a locking spring 38. The locking spring 38 will always support the sliding plate 33 downward. The upper surface of the blocking block 31 is provided with an unlocking component 36 for driving the sliding plate 33 to move. The trigger component 4 includes a piston plate 45 for driving the extrusion block 46 to move. The piston plate 45 is connected to the inner wall of the support 1. When the internal air pressure of the device is large, the gas can push the piston plate 45 to force it to move outward. The right end of the piston plate 45 is fixedly connected to the extrusion block 46. When the piston plate 45 moves outward, it will push the extrusion block 46 to squeeze the sliding plate 33, thereby driving the sliding plate 33 to move upward.

[0040] like Figure 3 、 Figure 4 and Figure 7 As shown, the trigger assembly 4 also includes a piston block 42, which penetrates and is connected to the upper surface of the support 1. When the piston block 42 is squeezed or pushed by gas, it can move downward. The lower surface of the piston block 42 is fixedly connected to a support frame 43. When the piston block 42 moves downward, it will drive the support frame 43 to move downward synchronously. The support frame 43 and the piston plate 45 are connected to each other through a hinge plate 44. One end of the hinge plate 44 is hinged to the inner wall of the support frame 43, and the other end is hinged to the end of the piston plate 45 close to the support frame 43. Therefore, when the support frame When 43 moves downward, it can push the piston plate 45 to move outward through the hinge plate 44. The upper surface of the support 1 is fixedly connected to a guide frame 47 for guiding the movement of the anti-slip plate 41. The upper surface of the piston block 42 is fixedly connected to the anti-slip plate 41. The anti-slip plate 41 is slidably connected to the inner wall of the guide frame 47. The anti-slip plate 41 can be used for the operator to stand. The anti-slip plate 41 is elastically connected to the upper surface of the support 1 through a reset spring 48. When the operator no longer steps on the anti-slip plate 41, the reset spring 48 will drive the anti-slip plate 41 to move upward and reset through its own elastic deformation.

[0041] like Figure 6 As shown, the unlocking assembly 36 includes a pull rod 362 for driving the sliding plate 33 to move. The lower end of the pull rod 362 is fixedly connected to the upper end of the sliding plate 33. When the pull rod 362 moves upward, it can drive the sliding plate 33 to move upward. The pull rod 362 passes through and is slidably connected to the upper surface of the blocking block 31. If manual unlocking is required, the sliding plate 33 can be driven to move upward by pulling the pull rod 362, thereby forcing the locking block 310 to be retracted into the interior of the blocking block 31. The upper surface of the blocking block 31 is rotatably connected to the handle 361, and the inner wall of the handle 361 is provided with a pull rod 362. The pull rod 362 slides on the inner wall of the accommodating groove 363. By toggling the handle 361, the handle 361 can be driven to rotate. The rotation of the handle 361 can pull the pull rod 362 through the accommodating groove 363, thereby driving the pull rod 362 to move upward.

[0042] like Figure 4 、 Figure 7 and Figure 8As shown, the locking assembly 5 includes a support platform 52 for supporting the support frame 43, and the support platform 52 is slidably connected to the inner wall of the support 1. By using the support platform 52 to support the bottom end of the support frame 43, the support frame 43 can be prevented from moving downward at will. The end of the support frame 43 close to the support platform 52 is set to an inclined shape. The inclined setting allows the support platform 52 to easily enter the bottom of the support frame 43. The inner wall of the support 1 is fixedly connected to a guide rod 51 for guiding the movement of the support platform 52, and the support platform 52 is slidably connected to the outer wall of the guide rod 51. The guide rod 51 can guide the support platform 52 to move horizontally. The inner wall of the support 1 is penetrated by and slidably connected with a double-headed threaded rod 56. The support platform 52 is threadedly connected to the outer wall of the double-headed threaded rod 56. By rotating the double-headed threaded rod 56, the support platform 52 can be driven to move forward and backward. The front and rear ends of the double-headed threaded rod 56 are fixedly connected with a hexagonal head 55. The front and rear ends of the support 1 are fixedly connected with a protective frame 53 for protecting the hexagonal head 55. The outer wall of the protective frame 53 is rotatably connected with a cover plate 54, and the cover plate 54 can protect the internal structure of the protective frame 53.

[0043] like Figure 1-Figure 3 As shown, the front surface of the sealed room 2 is provided with an air inlet pipe 21 and an exhaust pipe 22 from top to bottom. The air inlet pipe 21 can be connected to a high-pressure air pump to input high-pressure gas into the sealed room 2. The rear surface of the sealed room 2 is provided with an observation window 23 for the operator to observe the internal situation of the sealed room 2.

[0044] Working principle: During testing, the civil air defense door is installed at the opening of the sealed room 2, and gas is injected into the sealed room 2 through the air inlet pipe 21 to create a pressure environment. When the air pressure in the sealed room 2 increases, the gas pushes the piston plate 45 to move right, driving the extrusion block 46 to squeeze the sliding plate 33 upward, and the sliding plate 33 pushes the slider 35 and the locking block 310 to retract into the blocking block 31 through the guide groove 34. At this time, the elastic force of the support spring 37 is released, pushing the blocking block 31 to pop up upward, and the protrusion 32 slides along the slide groove 311 to limit the position. The pop-up blocking block 31 directly blocks the opening of the civil air defense door, realizing safety protection under high-pressure state; at the same time, the locking spring 38 pushes the sliding plate 33 to reset, driving the locking block 310 to re-enter the locking groove 39, so that the blocking block 31 remains extended, forming a "door cannot be opened if it is not unlocked" prompt mechanism.

[0045] If the operator enters the device and steps on the anti-skid plate 41, the anti-skid plate 41 drives the piston block 42 to move downward. Similarly, the support frame 43 can squeeze the hinged plate 44 to drive the piston plate 45 to move outward, triggering the blocking block 31 to pop out, thereby preventing the civil defense door from closing accidentally and trapping people.

[0046] When no protection is needed, the double-headed threaded rod 56 is rotated to drive the support platform 52 to move toward the middle. The support platform 52 supports the support frame 43 so that it cannot move downward, blocking the trigger component 4 from driving the protection mechanism 3 to avoid accidental locking; after the detection is completed, the handle 361 is used to pull the pull rod 362 to drive the sliding plate 33 to move upward, and the locking block 310 is retracted, and the blocking block 31 can be pressed down to unlock and open the civil defense door.

[0047] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are intended only to describe the present invention and do not require that the present invention must be constructed or operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense. For example, they can be connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0048] The above is a preferred operating mode of the present invention. The description of the specific operating mode is only for a better understanding of the concept of the present invention. For those skilled in the art, it is clear that several improvements or equivalent substitutions can be made according to the principles of the present invention, and these improvements or equivalent substitutions are also considered to fall within the scope of protection of the present invention.

Claims

1. A device for detecting air tightness of a civil air defense door, characterized in that: The invention comprises a support (1), wherein the support (1) is used to support the entire device, a sealed room (2) is installed on the upper surface of the support (1), a protective mechanism (3) is provided on the upper surface of the support (1), a locking component (5) is provided on the inner wall of the support (1), and a trigger component (4) is provided near the center of the upper surface of the support (1); The protective mechanism (3) is used to prevent the civil defense door from opening. The protective mechanism (3) includes a blocking block (31), the blocking block (31) passes through and is slidably connected to the upper surface of the support (1), the blocking block (31) is elastically connected to the inner wall of the support (1) through a support spring (37), the front and rear ends of the blocking block (31) are fixedly connected with a protrusion (32), the inner wall of the support (1) is provided with a slide groove (311), the protrusion (32) slides on the inner wall of the slide groove (311), and the lower end of the blocking block (31) passes through and is slidably connected to the slide groove (311). A movable plate (33), the rear end of the blocking block (31) passes through and is slidably connected to a locking block (310), the inner wall of the sliding groove (311) is provided with a locking groove (39) adapted to the locking block (310), the outer wall of the locking block (310) is provided with a slider (35), the inner wall of the sliding plate (33) is provided with a guide groove (34) adapted to the slider (35), the sliding plate (33) and the inner wall of the blocking block (31) are elastically connected via a locking spring (38), and an unlocking component (36) is provided on the upper surface of the blocking block (31); The trigger assembly (4) comprises a piston plate (45), the piston plate (45) cooperates with the inner wall of the support (1), and the right end of the piston plate (45) is fixedly connected to an extrusion block (46).

2. The air tightness detection device for civil air defense doors according to claim 1, characterized in that: The trigger assembly (4) further comprises a piston block (42), which is arranged through the upper surface of the support (1) and is tightly fitted with the support (1), and the lower surface of the piston block (42) is fixedly connected to a support frame (43), and the support frame (43) and the piston plate (45) are connected to each other via a hinge plate (44).

3. The air tightness detection device for civil air defense doors according to claim 2, characterized in that: The upper surface of the support (1) is fixedly connected to a guide frame (47), the upper surface of the piston block (42) is fixedly connected to an anti-slide plate (41), the anti-slide plate (41) is slidably connected to the inner wall of the guide frame (47), and the anti-slide plate (41) is elastically connected to the upper surface of the support (1) via a return spring (48).

4. The air tightness detection device for civil air defense doors according to claim 1, characterized in that: The unlocking assembly (36) includes a pull rod (362), the lower end of the pull rod (362) is fixedly connected to the upper end of the sliding plate (33), and the pull rod (362) passes through and is slidably connected to the upper surface of the blocking block (31).

5. The air tightness detection device for civil air defense doors according to claim 4, characterized in that: The upper surface of the blocking block (31) is rotatably connected to a handle (361), and the inner wall of the handle (361) is provided with a pull rod (362), and the pull rod (362) slides on the inner wall of the accommodating groove (363).

6. The air tightness detection device for civil air defense doors according to claim 2, characterized in that: The locking assembly (5) comprises a support platform (52), the support platform (52) is slidably connected to the inner wall of the support (1), and one end of the support frame (43) close to the support platform (52) is arranged in an inclined shape.

7. The air tightness detection device for civil air defense doors according to claim 6, characterized in that: The inner wall of the support (1) is fixedly connected to a guide rod (51), and the support platform (52) is slidably connected to the outer wall of the guide rod (51).

8. The air tightness detection device for civil air defense doors according to claim 7, characterized in that: A double-threaded rod (56) is passed through and slidably connected to the inner wall of the support (1); the support platform (52) is threadedly connected to the outer wall of the double-threaded rod (56); and the front and rear ends of the double-threaded rod (56) are fixedly connected to hexagonal heads (55).

9. The air tightness detection device for civil air defense doors according to claim 8, characterized in that: The front and rear ends of the support (1) are both fixedly connected to a protective frame (53), and the outer wall of the protective frame (53) is rotatably connected to a cover plate (54).

10. The air tightness detection device for civil air defense doors according to claim 1, characterized in that: An air inlet pipe (21) and an exhaust pipe (22) are sequentially provided on the front surface of the sealed room (2) from top to bottom, and an observation window (23) is provided on the rear surface of the sealed room (2).

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