Internal locking device for marine steel doors

Abstract

The utility model discloses an internal locking device for a marine steel door, comprising a door frame and a steel door, wherein the steel door is rotatably installed inside the door frame, a first bevel gear is rotatably installed inside the steel door, a first connecting shaft is connected to one end of the first bevel gear, the first connecting shaft extends to the outside of one side of the steel door and is connected to a hand wheel, a second bevel gear is meshed with the first bevel gear, and a second connecting shaft is arranged at one end of the second bevel gear. In the utility model, the hand wheel is rotated to make the first connecting shaft drive the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, so that the second connecting shaft drives the worm to rotate, the worm drives the worm wheel to rotate, so that the arc groove cooperates with the sliding shaft, the insertion rod moves, thereby realizing the connection between the insertion rod and the door frame, realizing the purpose of closing and opening the steel door inside the cabin, and compared with the prior art, the utility model has a simple structure and is easy to operate, so as to ensure that the steel door can be opened as soon as possible in an emergency.

Description

Technical Field

[0001] The utility model relates to the technical field of ship steel doors, in particular to an internal locking device for ship steel doors. Background Art

[0002] The utility model with the publication number CN216588177U discloses an internal locking device for a marine steel door, comprising a steel door, an internal handle and a connecting rod, wherein a No. 1 clip is installed on the inner wall of the steel door, and one end of the pull rod is connected to the outer wall of a No. 1 rotating block, a No. 2 clip is installed on the outer wall of the No. 1 rotating block, a bent rod is installed on the inner wall of the steel door, a No. 2 rotating block is installed on the inner wall of the steel door, and a No. 3 clip is installed on the outer wall of the No. 2 rotating block. The utility model is provided with a positioning tube, a locking pin, a ring, an eye plate and a small chain, and after the internal locking, personnel can be prevented from opening and entering from the outside, and the utility model is simple, compact and reasonable, thereby improving safety.

[0003] The prior art has a complex structure and is cumbersome to operate. When people in the cabin need to escape urgently, the opening and closing operation of the steel door reduces the efficiency of emergency escape. Therefore, a marine steel door internal locking device is needed to meet the demand. Utility Model Content

[0004] The utility model aims to provide an internal locking device for a marine steel door to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a marine steel door internal locking device, comprising a door frame and a steel door, the steel door is rotatably installed inside the door frame, a first bevel gear is rotatably installed inside the steel door, a first connecting shaft is connected to one end of the first bevel gear, the first connecting shaft extends to one side of the steel door and is connected to a hand wheel, a second bevel gear is meshed with the first bevel gear, a second connecting shaft is arranged at one end of the second bevel gear, a worm is arranged at one end of the second connecting shaft, a worm is rotatably installed inside the steel door, the worm wheel and the worm are meshed with each other, two symmetrical arc grooves are provided on the worm wheel, sliding shafts are slidably adapted in the two arc grooves, a plug rod is arranged on one end of the two sliding shafts, the two plug rods are symmetrical to each other and are horizontally inserted in both sides of the door frame, and a handle is arranged on the side of the steel door away from the hand wheel.

[0006] Preferably, the door frame and the steel door are provided with a plurality of hinges on the same side of the hand wheel.

[0007] Preferably, a limiting frame is provided on the door frame on the side of the handle, the inner frame specification of the limiting frame is smaller than the outer frame specification of the steel door, and the handle side of the steel door is in contact with one side of the limiting frame.

[0008] Preferably, a first chamber, a second chamber and a third chamber are opened in the steel door, the first bevel gear and the second bevel gear are both located in the first chamber, the worm is located in the second chamber, the second connecting shaft is located between the second chamber and the first chamber, the worm wheel is located in the third chamber, and the third chamber is communicated with the second chamber.

[0009] Preferably, a guide groove is provided at one end of the third chamber, and both ends of the guide groove respectively penetrate to both sides of the steel door, and two insertion rods are slidably installed in the guide groove.

[0010] Preferably, a positioning shaft is rotatably installed in one end of the third chamber, and the positioning shaft is connected to the center of the worm gear.

[0011] Preferably, the inner walls on both sides of the door frame are provided with insertion holes, and the ends of the two insertion rods away from the sliding shaft are respectively inserted into the corresponding insertion holes.

[0012] The beneficial effects of the utility model are:

[0013] In the utility model, by rotating the hand wheel, the first connecting shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second connecting shaft drives the worm to rotate, the worm drives the worm wheel to rotate, the arc groove cooperates with the sliding shaft, the insertion rod moves, thereby realizing the connection between the insertion rod and the door frame, and achieving the purpose of closing and opening the steel door inside the cabin. Compared with the existing technology, the structure is simple and the operation is convenient, which ensures that the steel door can be opened as soon as possible in an emergency.

[0014] In the utility model, the worm and the worm wheel cooperate with each other to effectively prevent the worm wheel from rotating, thereby ensuring the stability of the plug-in connection of the plug rod and effectively preventing the problem of automatic locking of the steel door when no one is in the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the outer structure of an internal locking device for a marine steel door proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the inner structure of an internal locking device for a marine steel door proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of a partial structure of a hand wheel of an internal locking device for a marine steel door proposed by the utility model;

[0018] Figure 4 This is a partial structural schematic diagram of a rear cross-section of a worm gear of an internal locking device for a marine steel door proposed by the utility model;

[0019] Figure 5This is a schematic diagram of a top-view cross-sectional structure of an insertion rod of an internal locking device for a marine steel door proposed by the utility model;

[0020] Figure 6 The utility model is a schematic diagram of a side cross-sectional structure of an internal locking device for a marine steel door.

[0021] In the figure: 1. door frame; 2. steel door; 3. first bevel gear; 4. first connecting shaft; 5. hand wheel; 6. second bevel gear; 7. second connecting shaft; 8. worm; 9. worm wheel; 10. arc groove; 11. sliding shaft; 12. plug rod; 13. handle; 14. hinge; 15. limit frame; 16. first chamber; 17. second chamber; 18. third chamber; 19. guide groove; 20. positioning shaft; 21. socket. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-6 A marine steel door internal locking device comprises a door frame 1 and a steel door 2, the steel door 2 is rotatably installed inside the door frame 1, a first bevel gear 3 is rotatably installed inside the steel door 2, a first connecting shaft 4 is connected to one end of the first bevel gear 3, the first connecting shaft 4 extends to one side of the steel door 2 and is connected to a hand wheel 5, a second bevel gear 6 is meshed on the first bevel gear 3, a second connecting shaft 7 is arranged at one end of the second bevel gear 6, a worm 8 is arranged at one end of the second connecting shaft 7, a worm wheel 9 is rotatably installed inside the steel door 2, the worm wheel 9 and the worm 8 are meshed with each other, two symmetrical arc grooves 10 are provided on the worm wheel 9, a sliding shaft 11 is slidably adapted in the two arc grooves 10, a plug rod 12 is arranged on one end of the two sliding shafts 11, the two plug rods 12 are symmetrical to each other, and are horizontally inserted in both sides of the door frame 1, and a handle 13 is arranged on the side of the steel door 2 away from the hand wheel 5.

[0024] When the crew enters the cabin, they turn the steel door 2 to close the steel door 2, turn the hand wheel 5, and through the connection with the first connecting shaft 4, the first bevel gear 3 drives the second bevel gear 6 to rotate, and through the connection with the second connecting shaft 7, the worm 8 drives the worm wheel 9 to rotate, and the arc groove 10 follows the rotation, driving the sliding shaft 11 to move, and pushes the rod 12 from the inside of the steel door 2 to the door frame 1, thereby effectively limiting the rotation of the steel door 2 and achieving the purpose of locking the steel door 2. When the crew comes out of the cabin, they turn the hand wheel 5 in the opposite direction, so that the worm 8 drives the worm wheel 9 to rotate in the opposite direction, and the arc groove 10 and the driving sliding shaft 11 retract the rod 12 from the door frame 1, thereby releasing the restriction on the rotation of the steel door 2 and achieving the purpose of the steel door 2 being rotatable and open.

[0025] Specifically, in this embodiment, a plurality of hinges 14 are provided on the same side of the hand wheel 5 as the door frame 1 and the steel door 2, so that the steel door 2 can rotate toward the inside of the cabin when opened, thereby preventing the steel door 2 from occupying deck space when opened.

[0026] Specifically, in the present embodiment, a limit frame 15 is provided on one side of the door frame 1 located on the handle 13, and the inner frame specification of the limit frame 15 is smaller than the outer frame specification of the steel door 2. The steel door 2 is in contact with one side of the limit frame 15 on the handle 13 side. The limit frame 15 provides a limit for closing the steel door 2 and blocks the gap between the outer frame of the steel door 2 and the inner frame of the door frame 1, thereby preventing sea breeze from entering the cabin and preventing human damage to the insertion rod 12.

[0027] Specifically, in the present embodiment, a first chamber 16, a second chamber 17 and a third chamber 18 are provided in the steel door 2, the first bevel gear 3 and the second bevel gear 6 are both located in the first chamber 16, the worm 8 is located in the second chamber 17, the second connecting shaft 7 is located between the second chamber 17 and the first chamber 16, the worm wheel 9 is located in the third chamber 18, and the third chamber 18 is communicated with the second chamber 17.

[0028] Specifically, in this embodiment, a guide groove 19 is opened at one end of the third chamber 18, and both ends of the guide groove 19 respectively penetrate to the two sides of the steel door 2, and the two insertion rods 12 are slidably installed in the guide groove 19, which effectively guides the insertion rods 12 to move in the horizontal direction.

[0029] Specifically, in this embodiment, a positioning shaft 20 is rotatably installed in one end of the third chamber 18, and the positioning shaft 20 is connected to the center of the worm wheel 9, so that the worm wheel 9 always rotates at the same position, ensuring the engagement between the worm 8 and the worm wheel 9.

[0030] Specifically, in this embodiment, insertion holes 21 are opened on the inner walls on both sides of the door frame 1, and the ends of the two plug rods 12 away from the sliding shaft 11 are respectively inserted into the corresponding insertion holes 21, which is convenient for the insertion of the plug rods 12, thereby realizing the connection between the plug rods 12 and the door frame 1, thereby limiting the rotation of the steel door 2.

[0031] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A ship steel door internal locking device, comprising a door frame (1) and a steel door (2), characterized in that: The steel door (2) is rotatably mounted inside the door frame (1), a first bevel gear (3) is rotatably mounted inside the steel door (2), one end of the first bevel gear (3) is connected to a first connecting shaft (4), the first connecting shaft (4) extends to the outside of one side of the steel door (2) and is connected to a hand wheel (5), a second bevel gear (6) is meshed with the first bevel gear (3), one end of the second bevel gear (6) is provided with a second connecting shaft (7), and one end of the second connecting shaft (7) is provided with a worm (8) A worm wheel (9) is rotatably installed in the steel door (2), the worm wheel (9) and the worm (8) are meshed with each other, two symmetrical arc grooves (10) are provided on the worm wheel (9), and sliding shafts (11) are slidably adapted in the two arc grooves (10), and one end of the two sliding shafts (11) is provided with an insertion rod (12), the two insertion rods (12) are symmetrical to each other, and are horizontally inserted into the two sides of the door frame (1), and a handle (13) is provided on the side of the steel door (2) away from the hand wheel (5).

2. The internal locking device for a marine steel door according to claim 1, characterized in that: The door frame (1) and the steel door (2) are provided with a plurality of hinges (14) on the same side of the hand wheel (5).

3. The internal locking device for a marine steel door according to claim 1, characterized in that: The door frame (1) is provided with a limiting frame (15) on one side of the handle (13); the inner frame specification of the limiting frame (15) is smaller than the outer frame specification of the steel door (2); and the side of the steel door (2) on the handle (13) is in contact with one side of the limiting frame (15).

4. The internal locking device for a marine steel door according to claim 1, characterized in that: The steel door (2) is provided with a first chamber (16), a second chamber (17) and a third chamber (18); the first bevel gear (3) and the second bevel gear (6) are both located in the first chamber (16); the worm (8) is located in the second chamber (17); the second connecting shaft (7) is located between the second chamber (17) and the first chamber (16); the worm wheel (9) is located in the third chamber (18); and the third chamber (18) is communicated with the second chamber (17).

5. The internal locking device for a marine steel door according to claim 4, characterized in that: A guide groove (19) is provided at one end of the third chamber (18), and the two ends of the guide groove (19) respectively penetrate the two sides of the steel door (2), and the two insertion rods (12) are both slidably installed in the guide groove (19).

6. The internal locking device for a marine steel door according to claim 4, characterized in that: A positioning shaft (20) is rotatably mounted in one end of the third chamber (18), and the positioning shaft (20) is connected to the center of the worm wheel (9).

7. The internal locking device for a marine steel door according to claim 1, characterized in that: Insertion holes (21) are provided on the inner walls on both sides of the door frame (1), and the ends of the two insertion rods (12) away from the sliding shaft (11) are respectively inserted into the corresponding insertion holes (21).

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