Locking device for maintenance window of large civil air defense door

Abstract

The utility model discloses a locking device for a maintenance window of a large civil air defense door, and belongs to the field of civil air defense doors. Comprising a maintenance window arranged on the civil air defense door; the closing plate is used for closing the maintenance window; the locking assembly is arranged on the closing plate; the locking assembly comprises a speed reducer seat and a right-angle speed reducer which are fixedly arranged on the closing plate, the right-angle speed reducer is provided with a driving shaft and two output shafts which are located on the two sides of the driving shaft and are perpendicular to the driving shaft, the two output shafts are coaxially arranged, and lock heads are arranged on the two output shafts; the civil air defense door is fixedly connected with locking seats located on the two sides of the maintenance window, and the locking seats are provided with locking grooves allowing the lock heads to be inserted therein. The locking device for the maintenance window of the large civil air defense door has the beneficial effect that the locking device for the maintenance window of the large civil air defense door is convenient to open and close.

Description

Technical Field

[0001] The present application relates to the field of civil air defense doors, and in particular, to a locking device for inspection windows of large civil air defense doors. Background Art

[0002] Civil air defense doors are measures to seal the openings of building structures used for the protection and sealing of civil air defense basements. For some extra-large and super-large civil air defense doors, they are heavy and have a huge structure, and the opening and closing of the door leaves requires a lot of manpower, material resources and time. In wartime, when the door leaves are closed, if personnel need to enter and exit the civil air defense hole, they need to reopen the civil air defense door, which requires a lot of time, manpower and material resources to open and close, which is extremely inconvenient. In order to solve this problem, civil air defense door inspection windows are designed on large civil air defense doors, but at the same time, the inspection windows also need to have protective and airtight performance, so a civil air defense locking system specifically for inspection windows is designed. Under the existing inspection windows, multiple locking devices are usually required to be installed on the windows to ensure the protective and airtight requirements, which makes opening and closing inconvenient.

[0003] The structure of the product can refer to the Chinese patent document announcement number: CN212927579U disclosed a civil air defense door with a multi-functional window, including a door frame and a civil air defense door leaf, the door frame is embedded in the wall, the civil air defense door leaf is installed in the door frame, and the civil air defense door leaf is provided with a multi-functional window, the multi-functional window includes a door leaf opening, a blocking plate for covering the door leaf opening, and a driving device for controlling the movement of the blocking plate, the blocking plate is movably connected in the civil air defense door leaf, and the blocking plate includes a transparent plate, a filter plate and a sealing plate arranged at intervals along the thickness direction of the civil air defense door leaf.

[0004] In the above structure, opening a window requires opening all the transparent plate, the filter plate and the sealing plate, which leads to the problem of inconvenience in opening the window.

[0005] Therefore, a locking device for the inspection window of a large civil air defense door which is easy to open and close is needed. Utility Model Content

[0006] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0007] In order to solve the technical problems mentioned in the above background technology part, some embodiments of the present application provide a locking device for the inspection window of a large civil air defense door, including: an inspection window, which is opened on the civil air defense door; a closing plate, which is used to close the inspection window; a locking assembly, which is arranged on the closing plate; the locking assembly includes: a reducer seat and a right-angle reducer fixedly arranged on the closing plate, the right-angle reducer having a drive shaft and two output shafts located on both sides of the drive shaft and perpendicular to the drive shaft, and the two output shafts are coaxially arranged; the output shaft has a screw section, the screw section is sleeved with a double ear sleeve, the double ear sleeve is threadedly connected to the screw section, two first connecting rods are hinged on the double ear sleeve, a second connecting rod is hinged between a pair of adjacent first connecting rods hinged on the two double ear sleeves, and a lock head is fixedly connected to the second connecting rod; a locking seat located on both sides of the inspection window is fixedly connected to the civil air defense door, and a lock groove for inserting the lock head is provided on the locking seat; an operating handle is detachably connected to the drive shaft.

[0008] Furthermore, the locking seat is provided with two limit members located on both sides of the lock slot, and the limit members include: a first limit rod, one end of which is hinged on the locking seat, and the other end is hinged to the limit block; a sliding ring, which is slidably arranged at the lock slot opening along the lock head insertion direction; a second limit rod, one end of which is hinged on the sliding ring, and the other end is hinged to the limit block.

[0009] Furthermore, limiting grooves for the limiting blocks to be embedded in are provided on both sides of the lock head, and rubber pads are arranged in the limiting grooves.

[0010] Furthermore, a flange for pushing the sliding ring is fixedly arranged on the lock head.

[0011] Furthermore, two first bearing seats are fixedly connected to the closing plate, one end of the output shaft extends into the first bearing seat, a bearing is arranged in the first bearing seat, the inner ring of the bearing is sleeved on the output shaft, and the outer ring is fixedly arranged on the first bearing seat; two second bearing seats are also fixed on the closing plate, the two output shafts pass through the two second bearing seats respectively, a bearing is also arranged in the second bearing seat, the inner ring of the bearing is sleeved on the output shaft, and the outer ring is fixedly arranged on the second bearing seat.

[0012] Furthermore, a retaining ring is fixedly connected to the output shaft, and the retaining ring is located at both ends of the screw rod segment.

[0013] Furthermore, the inner wall of the lock groove has an inclined surface which gradually approaches the human defense along the insertion direction of the lock head.

[0014] Furthermore, the edge of the closing plate is covered with a sealing rubber ring.

[0015] The beneficial effect of the present application is that it provides a locking device for the inspection window of a large civil air defense door which is easy to open and close. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0017] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0018] In the attached picture:

[0019] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure of the locking seat and the lock head in the embodiment;

[0021] Figure 3 yes Figure 1 A cross-sectional view of a locking seat in an embodiment;

[0022] Figure 4 yes Figure 1 A partial enlarged view of the drive shaft and the operating handle in the embodiment.

[0023] Reference numerals:

[0024] 100. Inspection window; 101. Closing plate; 102. Right-angle reducer; 103. Double earmuffs; 104. First connecting rod; 105. Second connecting rod; 106. Locking head; 107. Locking seat; 108. Reducer seat; 109. Drive shaft; 110. Output shaft; 111. Operating handle; 112. Screw rod section; 113. Locking groove; 114. Connecting hole; 115. Connecting head; 116. Limiting piece; 117. First limiting rod; 118. Sliding ring; 119. Second limiting rod; 120. Limiting block; 121. Limiting groove; 122. Flange; 123. First bearing seat; 124. Second bearing seat; 125. Retaining ring. DETAILED DESCRIPTION

[0025] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0026] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0027] It should be noted that the concepts such as "first" and "second" 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.

[0028] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0029] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] Reference Figure 1-4 The locking device for the inspection window of a large civil air defense door comprises: an inspection window 100, a closing plate 101, a right angle reducer 102, a double earmuff 103, a first connecting rod 104, a second connecting rod 105, a lock head 106, and a locking seat 107. The inspection window 100 is provided on the civil air defense door, and the closing plate 101 is used to close the inspection window 100. The edge of the closing plate 101 is covered with a sealing rubber ring to ensure the air tightness of the inspection window 100 and improve the gas protection of the civil air defense door.

[0031] A reducer seat 108 is fixedly arranged on the closing plate 101, and the right-angle reducer 102 is fixedly arranged on the reducer seat 108. The right-angle reducer 102 has a driving shaft 109 and two output shafts 110 located on both sides of the driving shaft 109 and perpendicular to the driving shaft 109, and the two output shafts 110 are coaxially arranged. An operating handle 111 is detachably connected to the driving shaft 109. The output shaft 110 has a screw rod section 112, and the screw rod section 112 has a thread. The double ear sleeve 103 is sleeved on the screw rod section 112 and is threadedly connected to the screw rod section 112. The first connecting rod 104 is provided with two groups respectively arranged on the two double ear sleeves 103, wherein each group of the first connecting rods 104 has two, and one end of the two first hinged rods 104 is respectively hinged on the double ear sleeves 103, wherein the other ends of the two adjacent first connecting rods 104 in the two groups of the first connecting rods 104 are hinged to the second connecting rod 105. The lock head 106 is fixedly connected and arranged at both ends of the second connecting rod 105, and is arranged perpendicular to the second connecting rod 105. The locking seat 107 is fixedly arranged on the civil air defense door, and is located on one side of the lock head 106. By rotating the operating handle 111, the two output shafts 110 are driven to rotate through the right-angle reducer 102. Under the action of the first connecting rod 104 and the second connecting rod 105, the lock head 106 moves and has a first state of being inserted into the lock slot 113 and a second state of being out of the lock slot 113.

[0032] In one embodiment, a connecting hole 114 extending in the axial direction is provided on the driving shaft 109. A connecting head 115 inserted into the connecting hole 114 is provided at one end of the operating handle 111, a key slot is provided on the side wall of the connecting hole 114, and a positioning key inserted into the key slot is provided on the connecting head 115. It is usually disassembled to further save space.

[0033] The locking seat 107 is provided with a lock slot 113 for inserting the lock head 106, and the locking seat 107 is provided with two limit members 116 located on both sides of the lock slot 113. The limit members 116 include: a first limit rod 117, a sliding ring 118, and a second limit rod 119. One end of the first limit rod 117 is hinged on the locking seat 107, and the other end is hinged to the limit block 120. The sliding ring 118 is slidably arranged at the opening of the lock slot 113 along the insertion direction of the lock head 106. One end of the second limit rod 119 is hinged on the sliding ring 118, and the other end is hinged to the limit block 120. Limit slots 121 for the limit block 120 to be embedded are provided on both sides of the lock head 106, and rubber pads are arranged in the limit slots 121. A flange 122 for pushing the sliding ring 118 is fixedly arranged on the lock head 106. When the lock head 106 is inserted into the lock groove 113 , the flange 122 pushes the sliding ring 118 , and under the action of the first limiting rod 117 and the second limiting rod 119 , the limiting block 120 is embedded in the limiting groove 121 , squeezing the rubber pad to clamp the lock head 106 .

[0034] Two first bearing seats 123 are fixedly connected to the closing plate 101. One end of the output shaft 110 extends into the first bearing seat 123. A bearing is arranged in the first bearing seat 123. The inner ring of the bearing is sleeved on the output shaft 110, and the outer ring is fixedly arranged on the first bearing seat 123. Two second bearing seats 124 are also fixed on the closing plate. The two output shafts 110 pass through the two second bearing seats 124 respectively. A bearing is also arranged in the second bearing seat 124. The inner ring of the bearing is sleeved on the output shaft, and the outer ring is fixedly arranged on the second bearing seat.

[0035] A retaining ring 125 is fixedly connected to the output shaft 110 , and the retaining ring 125 is located at both ends of the screw rod section 112 .

[0036] The inner wall of the lock slot 113 has an inclined surface gradually approaching the civil air defense door along the insertion direction of the lock head 106. When the lock head 106 is inserted into the lock slot 113, under the action of the inclined surface, the closing plate 101 is closely attached to the civil air defense door, thereby improving the gas protection of the civil air defense door.

[0037] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A locking device for the inspection window of a large civil air defense door, characterized in that: include: Inspection window, opened on the civil air defense door; A closing plate for closing the inspection window; A locking assembly disposed on the closing plate; The locking assembly comprises: A reducer seat and a right-angle reducer are fixedly arranged on the closing plate, wherein the right-angle reducer has a driving shaft and two output shafts located on both sides of the driving shaft and perpendicular to the driving shaft, and the two output shafts are coaxially arranged; The output shaft has a screw rod section, the screw rod section is sleeved with a double ear sleeve, the double ear sleeve is threadedly connected to the screw rod section, two first connecting rods are hinged on the double ear sleeve, a second connecting rod is hinged between a pair of adjacent first connecting rods hinged on the two double ear sleeves, and a lock is fixedly connected to the second connecting rod; The civil air defense door is fixedly connected with a locking seat located on both sides of the inspection window, and the locking seat is provided with a lock slot for inserting a lock head; An operating handle is detachably connected to the driving shaft.

2. The locking device for the inspection window of a large civil air defense door according to claim 1 is characterized in that: The locking seat is provided with two limiting members located on both sides of the locking groove, and the limiting members include: A first limiting rod, one end of which is hinged to the locking seat, and the other end of which is hinged to the limiting block; A sliding ring is slidably arranged at the opening of the lock slot along the insertion direction of the lock head; The second limiting rod has one end hinged on the sliding ring and the other end hinged on the limiting block.

3. The locking device for the inspection window of a large civil air defense door according to claim 2 is characterized in that: Limiting grooves for the limiting blocks to be embedded in are provided on both sides of the lock head, and rubber pads are arranged in the limiting grooves.

4. The locking device for the inspection window of a large civil air defense door according to claim 3 is characterized in that: The lock head is fixedly provided with a flange for pushing the sliding ring.

5. The locking device for the inspection window of a large civil air defense door according to claim 4 is characterized in that: Two first bearing seats are fixedly connected to the closing plate, one end of the output shaft extends into the first bearing seat, a bearing is arranged in the first bearing seat, the inner ring of the bearing is sleeved on the output shaft, and the outer ring is fixedly arranged on the first bearing seat; two second bearing seats are also fixed on the closing plate, the two output shafts pass through the two second bearing seats respectively, a bearing is also arranged in the second bearing seat, the inner ring of the bearing is sleeved on the output shaft, and the outer ring is fixedly arranged on the second bearing seat.

6. The locking device for the inspection window of a large civil air defense door according to claim 5, characterized in that: A retaining ring is fixedly connected to the output shaft, and the retaining ring is located at both ends of the screw rod segment.

7. The locking device for the inspection window of a large civil air defense door according to claim 6, characterized in that: The inner wall of the lock groove has an inclined surface which gradually approaches the human defense along the insertion direction of the lock head.

8. The locking device for the inspection window of a large civil air defense door according to claim 7, characterized in that: The edge of the closing plate is covered with a sealing rubber ring.

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