Civil air defense door locking device convenient for filling lubricating grease

Abstract

The civil air defense door locking device comprises a locking shaft sleeve, a locking head, a locking head driving mechanism and a lubricating grease filling mechanism arranged on the locking shaft sleeve, the locking shaft sleeve is arranged on the edge of the inner side of a door leaf of a civil air defense door, the locking head driving mechanism is arranged on the inner side of the door leaf of the civil air defense door, and the lubricating grease filling mechanism is arranged on the locking shaft sleeve. One end of the locking head is connected with the locking head driving mechanism, the other end of the locking head is inserted into the locking shaft sleeve, a door pocket hinged to a door leaf of the civil defense door is provided with a lock hole corresponding to the locking shaft sleeve, and the locking shaft sleeve is provided with a lubricating grease filling port communicated with an inner cavity of the locking shaft sleeve. During maintenance, lubricating grease is filled into the inner cavity of the locking shaft sleeve through the lubricating grease filling mechanism so as to lubricate the locking shaft sleeve and the locking head, operation is convenient and fast, the trouble that a grease gun is carried for filling the lubricating grease is avoided, and the maintenance efficiency is improved. Maintenance is more convenient, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense door locking devices, and particularly relates to a civil air defense door locking device convenient for filling grease. Background Technique

[0002] The civil air defense door is the door of the entrance and exit of the civil air defense project, mainly including a door frame and a door leaf. The civil air defense door is mostly used at the entrances and exits of underground shopping malls, hospitals, underground parking lots and civil air defense command posts. The civil air defense door is mainly made of concrete and metal materials, has good sealing performance and anti-impact ability, and can effectively prevent harmful substances in the external environment from entering the interior of the civil air defense project to ensure the safety of the civil air defense project.

[0003] The civil air defense door locking device is a lock installed on the civil air defense door for locking the civil air defense door. During the use of the civil air defense door, the door leaf should be in an open state for a long time. However, during daily maintenance, it is necessary to regularly open and close the door leaf and the locking device, and regularly fill the locking device with grease for lubrication to prevent rust and ensure its normal function. At present, when maintaining the existing civil air defense door locking device, it is generally manually carried with a grease gun to fill the grease separately. Each time the grease is filled, it is necessary to repeatedly install and disassemble the grease gun with the grease filling port of each locking device, which is inconvenient to operate, the maintenance is not convenient enough, and the work efficiency is low. Content of the Utility Model

[0004] In view of this, it is necessary to provide a civil air defense door locking device convenient for filling grease to solve the technical problems of inconvenient operation and inconvenient maintenance when maintaining the locking device in the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A civil air defense door locking device convenient for filling grease is arranged on the door leaf of the civil air defense door for locking the civil air defense door, and includes a locking shaft sleeve, a locking head, a locking head driving mechanism and a grease filling mechanism arranged on the locking shaft sleeve. The locking shaft sleeve is arranged at the inner edge of the door leaf of the civil air defense door, and the locking head driving mechanism is arranged inside the door leaf of the civil air defense door. One end of the locking head is connected to the locking head driving mechanism, and the other end of the locking head is inserted into the locking shaft sleeve. A lock hole corresponding to the locking shaft sleeve is arranged on the door frame hinged to the door leaf of the civil air defense door. The locking head driving mechanism drives the locking head to extend into the lock hole along the locking shaft sleeve to lock the civil air defense door. A grease filling port communicated with its inner cavity is arranged on the locking shaft sleeve. The extrusion port of the grease filling mechanism is hermetically connected to the grease filling port and communicated with each other, and can fill grease into the inner cavity of the locking shaft sleeve through the grease filling port to lubricate the locking shaft sleeve and the locking head.

[0007] Preferably, the grease filling mechanism includes a grease storage cylinder, a pressing piston, a pressing rod and a handle. The grease storage cylinder is arranged on the locking bushing. The extrusion port of the grease storage cylinder is hermetically connected to and communicated with the grease filling port. The pressing piston is arranged in the grease storage cylinder and is hermetically fitted with the inner side wall of the grease storage cylinder. The pressing rod is threadedly connected to one end of the grease storage cylinder away from its extrusion port, and one end of the pressing rod extends into the grease storage cylinder and is rotatably connected to the pressing piston, and the other end extends outward along the axial direction of the grease storage cylinder. The handle is arranged at the end of the pressing rod extending outward. By rotating the pressing rod, the pressing piston can be pushed to move towards the extrusion port of the grease storage cylinder, so as to squeeze the grease in the grease storage cylinder into the inner cavity of the locking bushing.

[0008] Preferably, a detachable cylinder cover is arranged at one end of the grease storage cylinder away from its extrusion port, and the pressing rod is threadedly connected with the cylinder cover.

[0009] Preferably, the locking bushing is arranged horizontally, the grease filling port is arranged at the upper end or the lower end of the locking bushing and is located in the middle of the locking bushing. The grease storage cylinder is arranged longitudinally on the locking bushing and is correspondingly connected to the grease filling port.

[0010] Preferably, a fixing plate is arranged on the outer side wall of the grease storage cylinder, and the fixing plate is fixedly connected to the locking bushing.

[0011] Preferably, the locking head driving mechanism includes a handwheel, a driving disc and a connecting rod. The driving disc is rotatably arranged on the inner side wall of the door leaf of the civil air defense door, and the axial direction of the driving disc is perpendicular to the inner side wall of the door leaf of the civil air defense door. The handwheel is rotatably arranged on the outer side of the door leaf of the civil air defense door, and the shaft end of the handwheel penetrates through the door leaf of the civil air defense door and is shaft-connected to the driving disc. An eccentric shaft is arranged on the shaft surface of the driving disc away from the handwheel. One end of the connecting rod is rotatably sleeved on the eccentric shaft, and the other end of the connecting rod is pin-connected to the shaft end of the locking head. By driving the driving disc to rotate through the handwheel, the locking head is pushed to move axially along the locking bushing by using the connecting rod, so that the locking head extends into the lock hole or retracts into the locking bushing.

[0012] Preferably, there are two locking bushings, symmetrically arranged at the opposite two side edges on the inner side of the door leaf of the civil air defense door. There are two locking heads, respectively inserted into the two locking bushings. On both sides of the door frame hinged to the door leaf of the civil air defense door, there are lock holes corresponding to the two locking bushings. The driving disc is arranged between the two locking bushings. There are two eccentric shafts, symmetrically arranged on both sides of the axial surface of the driving disc. One ends of the two connecting rods are respectively sleeved on the two eccentric shafts, and the other ends of the two connecting rods are respectively pin-connected to the axial ends of the locking heads facing the driving disc. By rotating the handwheel to drive the driving disc to rotate, the rotation of the disc drives the two connecting rods to move synchronously in opposite directions, so as to push the two locking heads to move telescopically along the two locking bushings respectively. There are two grease filling mechanisms, correspondingly arranged on the two locking bushings.

[0013] As can be seen from the above technical solution, the civil air defense door locking device facilitating grease filling provided by this application includes a locking bushing, a locking head, a locking head driving mechanism and a grease filling mechanism arranged on the locking bushing. The locking bushing is arranged at the inner edge of the door leaf of the civil air defense door. The locking head driving mechanism is arranged on the inner side of the door leaf of the civil air defense door. One end of the locking head is connected to the locking head driving mechanism, and the other end of the locking head is inserted into the locking bushing. A grease filling port communicated with its inner cavity is arranged on the locking bushing. The extrusion port of the grease filling mechanism is hermetically connected to the grease filling port and communicates with each other. During maintenance, grease can be directly filled into the inner cavity of the locking bushing through the grease filling mechanism to lubricate the locking bushing and the locking head. The operation is convenient and fast, avoiding the trouble of carrying a grease gun to fill grease, making the maintenance more convenient and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic assembly structure diagram of this utility model.

[0015] Figure 2 It is a schematic assembly structure diagram of this utility model from another angle.

[0016] Figure 3 It is a schematic diagram of the state where the locking head retracts into the locking bushing.

[0017] Figure 4 It is a schematic structure diagram of the grease filling mechanism.

[0018] In the figure: door leaf 1, door frame 2, lock hole 21, locking bushing 3, grease filling port 31, locking head 4, locking head driving mechanism 5, handwheel 51, driving disc 52, connecting rod 53, eccentric shaft 54, grease filling mechanism 6, grease storage cylinder 61, extrusion piston 62, extrusion rod 63, handle 64, cylinder cover 65, fixing plate 66, extrusion port 67. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required in the embodiments. Obviously, the attached drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0020] Please refer to Figure 1 and Figure 4 , the embodiments of the present utility model provide a civil air defense door locking device that facilitates the filling of grease. It is arranged on the door leaf 1 of the civil air defense door and is used to lock the door leaf 1 of the civil air defense door. The civil air defense door locking device that facilitates the filling of grease includes a locking shaft sleeve 3, a locking head 4, a locking head driving mechanism 5, and a grease filling mechanism 6 arranged on the locking shaft sleeve 3. The locking shaft sleeve 3 is horizontally arranged at the inner edge of the door leaf 1 of the civil air defense door. A lock hole 21 corresponding to the locking shaft sleeve 3 is arranged on the inner side wall of the door frame 2 hinged to the door leaf 1 of the civil air defense door. The locking head driving mechanism 5 is arranged inside the door leaf 1 of the civil air defense door and is parallel to the locking shaft sleeve 3. One end of the locking head 4 is connected to the locking head driving mechanism 5, and the other end of the locking head 4 is inserted into the locking shaft sleeve 3. The locking head driving mechanism 5 drives the locking head 4 to extend into the corresponding lock hole 21 along the locking shaft sleeve 3 for locking the door leaf 1 of the civil air defense door. A grease filling port 31 communicating with its inner cavity is arranged on the locking shaft sleeve 3. The extrusion port 67 of the grease filling mechanism 6 is hermetically connected to the grease filling port 31 by means of threaded connection or socket connection and is mutually communicated. The grease filling mechanism 6 is filled with grease, and the grease filling mechanism 6 can fill grease into the inner cavity of the locking shaft sleeve 3 through the grease filling port 31 to lubricate and maintain the locking shaft sleeve 3 and the locking head 4.

[0021] Specifically, the grease filling mechanism 6 includes a grease storage cylinder 61, a pressing piston 62, a pressing rod 63 and a handle 64. The locking bushing 3 is horizontally arranged, and the grease filling port 31 is arranged at the upper or lower end of the locking bushing 3 and is located in the middle of the locking bushing 3. A fixing plate 66 is arranged on the outer wall of the grease storage cylinder 61. The grease storage cylinder 61 is longitudinally fixed in the middle of the locking bushing 3 through the fixing plate 66. The fixing plate 66 is fixed to the locking bushing 3 by bolts. One end of the grease storage cylinder 61 facing the locking bushing 3 is provided with an extrusion port 67. The extrusion port 67 is hermetically connected to the grease filling port 31 of the locking bushing 3 and is interconnected. The grease storage cylinder 61 is filled with grease. The pressing piston 62 is arranged in the grease storage cylinder 61, is hermetically matched with the inner side wall of the grease storage cylinder 61, and can freely move along the axial direction of the grease storage cylinder 61. The pressing rod 63 is arranged at the end of the grease storage cylinder 61 far from its extrusion port 67, is in threaded fit connection with the end of the grease storage cylinder 61, and one end of the pressing rod 63 extends into the grease storage cylinder 61 and is rotatably connected to the pressing piston 62, and the other end extends outward along the axial direction of the grease storage cylinder 61. The handle 64 is fixedly arranged at the end of the pressing rod 63 extending outward. When maintaining the air defense door locking device, the staff can manually rotate the handle 64, drive the pressing rod 63 to rotate through the handle 64, and use the pressing rod 63 to push the pressing piston 62 to move towards the extrusion port 67 of the grease storage cylinder 61, so as to squeeze the grease filled in the grease storage cylinder 61 into the inner cavity of the locking bushing 3. Each time when maintaining, the staff can rotate the pressing rod 63 towards the extrusion port 67 of the grease storage cylinder 61 by the handle 64 for several turns to complete the maintenance operation. The operation is convenient and fast, avoiding the trouble of carrying a grease gun to fill grease, making the maintenance more convenient and improving the work efficiency.

[0022] Please continue to refer to Figure 4 Furthermore, in order to facilitate filling grease into the grease storage cylinder 61, a detachable cylinder cover 65 is arranged at the end of the grease storage cylinder 61 far from its extrusion port 67. The cylinder cover 65 is in threaded fit connection with the grease storage cylinder 61. The pressing rod 63 is in threaded fit connection with the cylinder cover 65. When filling grease, the cylinder cover 65 can be detached, the pressing rod 63 and the pressing piston 62 can be taken out together, and after filling grease, the cylinder cover 65 is fixed again.

[0023] Please refer to Figure 1 and Figure 2, the locking head driving mechanism 5 includes a handwheel 51, a driving disk 52 and a connecting rod 53. The driving disk 52 is rotatably arranged on the inner side wall of the door leaf 1 of the civil air defense door, inside the locking shaft sleeve 3, parallel to the locking shaft sleeve 3, and the axial direction of the driving disk 52 is perpendicular to the inner side wall of the door leaf 1 of the civil air defense door. The handwheel 51 is rotatably arranged on the outer side of the door leaf 1 of the civil air defense door, and the shaft end of the handwheel 51 penetrates through the door leaf 1 of the civil air defense door and is axially connected to the driving disk 52. An eccentric shaft 54 is arranged on the axial surface of the driving disk 52 away from the handwheel 51. One end of the connecting rod 53 is rotatably sleeved on the eccentric shaft 54, and the other end of the connecting rod 53 is pin-connected to the shaft end of the locking head 4 facing the driving disk 52. By driving the driving disk 52 to rotate through the handwheel 51, the connecting rod 53 is driven to reciprocate through the eccentric shaft 54 on the driving disk 52, and the locking head 4 is pushed to move axially along the locking shaft sleeve 3 by using the connecting rod 53, so that the locking head 4 extends into the lock hole 21 or retracts into the locking shaft sleeve 3 to realize the locking operation of the civil air defense door.

[0024] Please continue to refer to Figure 1 or Figure 3 , in a preferred embodiment, there are two locking shaft sleeves 3, symmetrically arranged at the opposite two side edges of the inner side of the door leaf 1 of the civil air defense door. There are two locking heads 4, respectively inserted into the two locking shaft sleeves 3. Lock holes 21 corresponding to the two locking shaft sleeves 3 are respectively arranged on the two opposite side walls of the inner side of the door frame 2 hinged to the door leaf 1 of the civil air defense door. The driving disk 52 is arranged between the two locking shaft sleeves 3. There are two eccentric shafts 54, symmetrically arranged on both sides of the axial surface of the driving disk 52. One ends of the two connecting rods 53 are respectively sleeved on the two eccentric shafts 54, and the other ends of the two connecting rods 53 are respectively pin-connected to the shaft ends of the locking heads 4 facing the driving disk 52. By driving the driving disk 52 to rotate through the handwheel 51, the two connecting rods 53 are driven to move synchronously and oppositely through the rotation of the disk, so as to push the two locking heads 4 to move axially along the two locking shaft sleeves 3 respectively, so as to lock the two sides of the door leaf 1 to the two sides of the door frame 2 at the same time, improving the protection effect. There are two grease filling mechanisms 6, correspondingly arranged on the two locking shaft sleeves 3, so as to realize the lubrication and maintenance of each locking shaft sleeve 3 and the locking head 4.

[0025] The civil air defense door locking device convenient for grease filling is applicable to various models of civil air defense doors and can be assembled in multiple groups according to the size or requirements of the civil air defense door. For example, as Figure 3 shown, two groups can be arranged side by side up and down on the door leaf 1 of a civil air defense door. Each locking shaft sleeve 3 of each group of civil air defense door locking devices is provided with an independent grease filling mechanism 6. During maintenance, independent operations can be carried out, which is convenient and fast, avoiding the trouble of carrying a grease gun to fill grease into each locking shaft sleeve 3 and the locking head 4 one by one, making the maintenance more convenient and improving the work efficiency.

[0026] The above-disclosed is only the preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A locking device for civil air defense door that is convenient for filling with grease, which is arranged on the door leaf of the civil air defense door and is used to lock the civil air defense door, and is characterized in that: The invention comprises a locking sleeve, a locking head, a locking head driving mechanism and a grease filling mechanism arranged on the locking sleeve, wherein the locking sleeve is arranged at the inner edge of the door leaf of the civil air defense door, the locking head driving mechanism is arranged on the inner side of the door leaf of the civil air defense door and is parallel to the locking sleeve, one end of the locking head is connected to the locking head driving mechanism, and the other end of the locking head is inserted in the locking sleeve, and a lock hole corresponding to the locking sleeve is arranged on the inner wall of the door frame hinged to the door leaf of the civil air defense door. The locking head driving mechanism drives the locking head to extend into the lock hole along the locking sleeve to lock the civil air defense door, and a grease filling port connected to its inner cavity is arranged on the locking sleeve, and the extrusion port of the grease filling mechanism is tightly connected to the grease filling port and connected to each other, and grease can be added to the inner cavity of the locking sleeve through the grease filling port to lubricate the locking sleeve and the locking head.

2. The grease-filled civil defense door locking device according to claim 1, characterized in that: The grease filling mechanism includes a grease storage barrel, an extrusion piston, an extrusion rod and a handle. The grease storage barrel is arranged on the locking sleeve. The extrusion port of the grease storage barrel is tightly connected with the grease filling port and are communicated with each other. The extrusion piston is arranged in the grease storage barrel and tightly cooperates with the inner side wall of the grease storage barrel. The extrusion rod is threadedly connected and arranged at one end of the grease storage barrel away from the extrusion port thereof, and one end of the extrusion rod extends into the grease storage barrel and is rotatably connected to the extrusion piston, and the other end thereof extends outwardly along the axial direction of the grease storage barrel. The handle is arranged at the end of the extrusion rod extending outwardly, and the extrusion piston can be pushed to move toward the extrusion port of the grease storage barrel by rotating the extrusion rod, so as to squeeze the grease in the grease storage barrel into the inner cavity of the locking sleeve.

3. The grease-filled civil defense door locking device according to claim 2, characterized in that: A detachable cylinder cover is arranged at one end of the grease storage cylinder away from the extrusion port thereof, and the extrusion rod is threadably connected with the cylinder cover.

4. The grease-filled civil defense door locking device according to claim 3, characterized in that: The locking sleeve is arranged transversely, the grease filling port is arranged at the upper end or the lower end of the locking sleeve and is located in the middle of the locking sleeve, and the grease storage cylinder is arranged longitudinally on the locking sleeve and is connected to the grease filling port accordingly.

5. The grease-filled civil defense door locking device according to claim 4, characterized in that: A fixing plate is arranged on the outer side wall of the grease storage cylinder, and the fixing plate is fixedly connected to the locking sleeve.

6. The grease-filled civil defense door locking device according to claim 5, characterized in that: The locking head driving mechanism includes a handwheel, a driving disk and a connecting rod. The driving disk is rotatably arranged on the inner side wall of the door leaf of the civil air defense door. The axial direction of the driving disk is perpendicular to the inner side wall of the door leaf of the civil air defense door. The handwheel is rotatably arranged on the outer side of the door leaf of the civil air defense door. The axial end of the handwheel passes through the door leaf of the civil air defense door and is connected with the driving disk shaft. An eccentric shaft is arranged on the axial surface of the driving disk away from the handwheel end. One end of the connecting rod is rotatably sleeved on the eccentric shaft, and the other end of the connecting rod is pin-connected with the axial end of the locking head. The driving disk is driven to rotate by the handwheel, and the connecting rod is used to push the locking head to telescopically move along the locking sleeve so that the locking head can be extended into the lock hole or retracted into the locking sleeve.

7. The grease-filled civil defense door locking device according to claim 6, characterized in that: There are two locking sleeves, which are symmetrically arranged at the opposite side edges of the inner side of the door leaf of the civil air defense door. There are two locking heads, which are respectively inserted in the two locking sleeves. Lock holes corresponding to the two locking sleeves are respectively arranged on the two side walls opposite to the inner side of the door frame hinged to the door leaf of the civil air defense door. The driving disk is arranged between the two locking sleeves. There are two eccentric shafts, which are symmetrically arranged on both sides of the axial surface of the driving disk. One end of the two connecting rods is respectively sleeved on the two eccentric shafts, and the other ends of the two connecting rods are respectively pinned to the axial end of the locking head facing the driving disk. The driving disk is rotated by the hand wheel, and the two connecting rods are driven to move synchronously in opposite directions through the rotation of the disk, so as to push the two locking heads to telescopically move along the two locking sleeves respectively. There are two grease filling mechanisms, which are correspondingly arranged on the two locking sleeves.

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