Civil air defense door locking structure

Abstract

The utility model discloses a civil air defense door locking structure which comprises a door body, a locking mechanism and a locking mechanism. The fixing frame is arranged in the mounting cavity; the first roller is arranged in the fixed frame; the rack is matched with the fixed frame; the locking rod is arranged at the end part of the rack; the limiting sleeve is matched with the locking rod; the rotating shaft is arranged on the inner wall of the mounting cavity; the gear is arranged on the rotating shaft and meshed with the rack; the handle is arranged at the end part of the rotating shaft; a lubricating device; the lubricating device comprises an oil storage box arranged on the door body, a push plate arranged in the oil storage box, a guide rod arranged on the inner wall of the oil storage box, a first elastic piece arranged on the guide rod in a sleeving mode, an oil conveying pipe matched with the oil storage box, an oil conveying pipe arranged on the oil conveying pipe, a push rod arranged on the push plate, a connecting plate arranged on the push rod and a telescopic plate arranged on the connecting plate. The fixed sleeve is arranged on the rotating shaft, the connecting rod is arranged on the fixed sleeve, the fixed ring plate is arranged on the connecting rod, and the push plate is arranged on the fixed ring plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of civil air defense door, especially a civil air defense door locking structure. BACKGROUND

[0002] Civil air defense door refers to the door of the entrance of people's air defense engineering, and the civil air defense door is usually provided with a locking device, and after being locked by the locking device, the civil air defense door cannot be easily opened.

[0003] Patent CN202222193860.4 discloses a civil air defense door locking device, which comprises two groups of end limiting sleeve columns which are mutually symmetrical and are fixedly installed on the outer wall body, a civil air defense door body located between the two groups of end limiting sleeve columns, a threaded sleeve fixedly installed at the center position of the front side of the civil air defense door body, a double-channel locking device provided in the civil air defense door body for being inserted into the end limiting sleeve column to lock and limit, a rectangular jack provided in the end limiting sleeve column and connected with the outside, and a first gear and a second gear which are mutually engaged with each other and are used for transmission, and the first gear and the second gear are rotatably connected with the front and rear plate bodies of the civil air defense door body through a rotating shaft.

[0004] In the above patent, the locking is realized by gear and rack transmission, and in order to ensure the convenience of opening and closing of the locking structure, the gear and the rack need to be lubricated. However, in the above patent, the gear and the rack are arranged in the door body, and it is very inconvenient to lubricate and maintain. SUMMARY

[0005] The summary part of the present application is used to introduce the concept in a brief form, and the concept will be described in detail in the specific embodiment part. The summary part of the present application is not intended to indicate the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] In order to solve the technical problems mentioned in the background part, some embodiments of the present application provide a civil air defense door locking structure, which comprises:

[0007] The door body is provided with a mounting cavity;

[0008] The fixed frame is arranged in the mounting cavity;

[0009] The first roller is arranged in the fixed frame;

[0010] The rack cooperates with the fixed frame;

[0011] The locking rod is arranged at the end of the rack;

[0012] The limiting sleeve cooperates with the locking rod;

[0013] A rotating shaft is arranged on the inner wall of the mounting cavity.

[0014] A gear is arranged on the rotating shaft and engaged with the rack.

[0015] A handle is arranged on the end of the rotating shaft.

[0016] A lubricating device is arranged on the door body.

[0017] The lubricating device comprises an oil storage box arranged on the door body, a push plate arranged in the oil storage box, a guide rod arranged on the inner wall of the oil storage box, a first elastic member sleeved on the guide rod, an oil delivery pipe matched with the oil storage box, a delivery pipe arranged on the oil delivery pipe, a push rod arranged on the push plate, a connecting plate arranged on the push rod, an extension plate arranged on the connecting plate, a fixing sleeve arranged on the rotating shaft, a connecting rod arranged on the fixing sleeve, a fixing ring plate arranged on the connecting rod, and a push plate arranged on the fixing ring plate.

[0018] Preferably, the lubricating device further comprises a mounting hole arranged on the side wall of the extension rod, a second elastic member arranged in the mounting hole, a jacking rod arranged on the end of the second elastic member, and a ball arranged on the end of the jacking rod.

[0019] Preferably, the extension plate is provided with a plurality of second rollers.

[0020] Preferably, the top of the oil storage box is provided with an oil filling pipe, and the end of the oil filling pipe is provided with a sealing cap.

[0021] Preferably, the end of the locking rod is provided with a third elastic member, and the end of the third elastic member is provided with a buffer plate.

[0022] Preferably, the door plate is provided with a circular hole through which the oil delivery pipe passes.

[0023] The application provides a civil air defense door locking structure which is convenient to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present application, so that other features, objects and advantages of the present application become more apparent. The illustrative embodiment drawings of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application.

[0025] In addition, throughout the drawings, the same or similar reference signs represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn according to the scale.

[0026] In the drawings:

[0027] Figure 1 The structure of the present application is shown in the schematic diagram.

[0028] Figure 2 Part structure diagram of the utility model.

[0029] Figure 3 For Figure 2 Enlarged view of A in the figure.

[0030] Figure 4 Internal structure diagram of the oil storage box of the utility model.

[0031] Figure 5 Cooperation diagram of the telescopic plate and the connecting plate of the utility model.

[0032] Figure 6 Structure diagram of the push plate of the utility model. DETAILED DESCRIPTION

[0033] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms, and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for exemplary purposes only, and are not intended to limit the scope of protection of the present disclosure.

[0034] In addition, it should be further noted that, for ease of description, only parts related to the invention are shown in the drawings. In the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0035] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0036] It should be noted that the modification of "one" or "multiple" in the present disclosure is illustrative rather than limiting, and those skilled in the art should understand that, unless otherwise explicitly stated in the context, it should be understood as "one or more".

[0037] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0038] As Figures 1-6As shown in the drawing, the human defense door locking structure comprises a door body 1, a fixed frame 2, a first roller 3, a rack 4, a locking rod 5, a limiting sleeve 6, a rotating shaft 7, a gear 8, a handle 71 and a lubricating device. The door body 1 is provided with an installation cavity. The fixed frame 2 is fixed in the installation cavity and can slide through the rack. The first roller 3 is rotatably connected to the fixed frame. The rack 4 passes through the fixed frame. The locking rod 5 is fixed on the end of the rack and can extend out of the door body. The limiting sleeve 6 is fixed on the wall and can be inserted by the locking rod. One end of the rotating shaft 7 is rotatably connected to the inner wall of the installation cavity and the other end extends out of the door body. The gear 8 is fixed on the rotating shaft and is engaged with the rack. The handle 71 is fixed on the end of the rotating shaft. Then, the locking rod can be inserted into the limiting sleeve by rotating the handle to drive the gear to rotate, thereby completing the locking.

[0039] Specifically, the lubricating device comprises an oil storage box 91, a push plate 92, a guide rod 93, a first elastic member 94, an oil conveying pipe 95, an oil feeding pipe 96, a push rod 97, a connecting plate 98, an expansion plate 99, a fixed sleeve 90, a connecting rod 10, a fixed ring plate 11 and a push plate 12. The oil storage box 91 is fixed on the door body. The push plate 92 is arranged in the oil storage box and can slide relative to the inner wall of the oil storage box. The guide rod 93 is fixed on the inner wall of the oil storage box at both ends. The push plate is provided with a hole through which the guide rod passes. The first elastic member 94 is a spring which is sleeved on the guide rod and one end of which is fixed on the push plate and the other end of which is fixed on the inner wall of the oil storage box. One end of the oil conveying pipe 95 is communicated with the oil storage box and the other end extends into the installation cavity. The door plate is provided with a circular hole through which the oil conveying pipe passes. One end of the oil feeding pipe 96 is connected with the oil conveying pipe and the other end is directed to the meshing position of the rack and the gear. One end of the push rod 97 is fixed on the push plate and the other end extends out of the oil storage box. The connecting plate 98 is fixed on the end of the push rod and is provided with a plug-in slot. The expansion plate 99 can be inserted into the plug-in slot and slides. The fixed sleeve 90 is fixed on the rotating shaft. The connecting plate 98 is fixed on the outer wall of the fixed sleeve. The fixed ring plate 11 is fixed on the connecting plate. The push plate 12 is annular and is fixed on the fixed ring plate. The push plate is provided with an inclined surface. In the circumferential direction of the push plate, the distance from the inclined surface of the push plate to the fixed ring plate gradually increases. When lubrication and maintenance are needed, the rotating shaft is rotated so that the lowest part of the inclined surface of the push plate is aligned with the expansion plate. Then, the expansion plate is pulled out a part so that the expansion plate is in contact with the push plate. Then, the rotating shaft is rotated. In the process of rotating the rotating shaft, the push plate extrudes the expansion plate, thereby pushing the push plate to move in the oil storage box to press out the lubricating oil in the oil storage box. The pressed-out lubricating oil will fall along the oil conveying pipe and the oil feeding pipe to the meshing position of the gear and the rack, thereby realizing lubrication. In the process of falling of the lubricating oil, the gear rotates, and the lubricating oil can be evenly dropped on the gear. When the gear rotates one round, the lubrication is completed.

[0040] In other embodiments, the lubricating device further comprises a mounting hole 13, a second elastic member 14, a top rod 15 and a ball 16, the mounting hole 13 is arranged on the side wall of the telescopic plate; the second elastic member 14 is a spring, one end of which is fixed on the bottom of the mounting hole; one end of the top rod 15 is fixed on the end of the second elastic member, and the top rod 15 can slide relative to the inner wall of the mounting hole; the ball 16 is rotatably connected to the end of the top rod; the side wall of the insertion slot is provided with a limiting slot for clamping the ball, and the limiting slot is provided with two limiting slots; when the telescopic plate is completely inserted into the insertion slot, the ball can be aligned with one limiting slot; when the telescopic plate is extended to the specified position of contacting the push plate, the ball is aligned with the other limiting slot, which can prevent the telescopic plate from moving out of the insertion slot automatically, and also prevent the insertion plate from moving back into the insertion slot during lubrication.

[0041] In other embodiments, a plurality of second rollers 991 are arranged on the telescopic plate 99, and the second rollers are rotatably connected to the telescopic plate, thereby reducing the friction between the push plate and the telescopic plate.

[0042] In other embodiments, the top of the oil storage box 91 is provided with an oil filling pipe 911, and a sealing cap 912 is screwed on the end of the oil filling pipe, which facilitates the replenishment of lubricating oil in the oil storage box.

[0043] In other embodiments, the end of the locking rod 5 is fixed with a third elastic member 51, and the end of the third elastic member is fixed with a buffer plate 52, which can reduce the impact of the locking rod and the limiting sleeve.

[0044] The above description is only some of the preferred embodiments of the present disclosure and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the application involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features and the technical features disclosed in the embodiments of the present disclosure (but not limited to) with similar functions are replaced with each other to form a technical solution.

Claims

1. A human defense door locking structure, comprising: a door body provided with a mounting cavity; a fixed frame arranged in the mounting cavity; a first roller arranged in the fixed frame; a rack matched with the fixed frame; a locking rod arranged at the end of the rack; a limiting sleeve matched with the locking rod; a rotating shaft arranged on the inner wall of the mounting cavity; a gear arranged on the rotating shaft and matched with the rack; a handle arranged on the end of the rotating shaft; a lubricating device; characterized in that the lubricating device comprises an oil storage box arranged on the door body, a push plate arranged in the oil storage box, a guide rod arranged on the inner wall of the oil storage box, a first elastic member sleeved on the guide rod, an oil delivery pipe matched with the oil storage box, a delivery pipe arranged on the oil delivery pipe, a push rod arranged on the push plate, a connecting plate arranged on the push rod, an extension plate arranged on the connecting plate, a fixing sleeve arranged on the rotating shaft, a connecting rod arranged on the fixing sleeve, a fixing ring plate arranged on the connecting rod, and a push plate arranged on the fixing ring plate, the push plate being provided with an inclined surface, the distance from the inclined surface of the push plate to the fixing ring plate gradually increasing, and the connecting plate being provided with a plug-in slot for the extension plate.

2. The civil defense door locking structure according to claim 1, wherein: The lubricating device further comprises a mounting hole arranged on the side wall of the extension rod, a second elastic member arranged in the mounting hole, a jacking rod arranged on the end of the second elastic member, and a ball arranged on the end of the jacking rod, and the side wall of the plug-in slot is provided with a limiting slot matched with the ball.

3. The door locking structure according to claim 1, characterized in that: A plurality of second rollers are arranged on the extension plate.

4. The civil defense door locking structure according to claim 1, wherein: The top of the oil storage box is provided with an oil injection pipe, and the end of the oil injection pipe is provided with a sealing cap.

5. The civil defense door locking structure according to claim 1, wherein: The end of the locking rod is provided with a third elastic member, and the end of the third elastic member is provided with a buffer plate.

6. The door closure structure according to claim 1, wherein: The door plate is provided with a circular hole through which the oil delivery pipe passes.

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