A human cabin door locking device

Abstract

The utility model discloses a man cabin door locking device, including man cabin door body and rotary lock body, the surface installation of man cabin door body has rotary lock body, still include the change block mechanism and the pressure receiving mechanism, the change block mechanism includes the concave compression block, T shaped reinforcing bar and L shaped pressing plate, the concave compression block is integrally formed at the inward rotation body of rotary lock body, is provided change block mechanism at the rotary lock body of man cabin door body, and sets up the pressure receiving mechanism and is installed in the cabin body near the man cabin door body place matched spinning pressure, and change block mechanism adopts the detachable design of T shaped reinforcing bar and bolt combination, and L shaped pressing plate is as direct wearing piece after being damaged, only need to spin bolt and can draw change, and the concave receiving strip of pressure receiving mechanism can spin bolt and individually detach and replace after wearing, and the maintenance complexity of locking device at man cabin door body is reduced greatly.

Description

Technical Field

[0001] This utility model relates to the field of human cabin door technology, and in particular to a human cabin door locking device. Background Technology

[0002] The personnel cabin is a crucial safety feature of the tunnel boring machine (TBM), primarily used for the pressurized entry of personnel during tunneling. As a manned pressure vessel, the cabin requires high airtightness. Leaks during pressurization or pressure maintenance will endanger the safety of personnel inside. Significant leaks during pressurized entry can disrupt the pressure balance at the tunnel face, leading to serious accidents such as collapses and water inrushes. These not only endanger the lives of personnel but can also cause ground subsidence or even collapse. Furthermore, the cabin door seal is one of the largest sealing areas within the pressure transition chamber, demanding even higher reliability.

[0003] Existing manned hatch locking devices use a type of handle-clamping locking mechanism. By rotating the handle, a cam-shaped pressure block presses against the cover to achieve self-locking. However, repeated rotation and pressing of the pressure block against the hatch body causes wear, which accumulates over time and reduces the locking force of the hatch, affecting its sealing performance. Furthermore, replacing the pressure block and the pressure points on the hatch after damage is cumbersome, making the manned hatch locking device inconvenient to maintain. Therefore, we propose a new manned hatch locking device. Utility Model Content

[0004] The main objective of this invention is to provide a locking device for a passenger cabin door. By setting a replacement mechanism at the rotating lock body of the passenger cabin door and a pressure-bearing mechanism installed near the passenger cabin door for matching rotation pressure, the replacement mechanism adopts a detachable design combining T-shaped guide ribs and bolts. The L-shaped pressure plate, as a directly worn part, can be replaced simply by unscrewing the bolts after damage. The concave strip of the pressure-bearing mechanism can be removed and replaced separately after wear by unscrewing the bolts. This significantly reduces the maintenance complexity of the locking device at the passenger cabin door and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A manhole door locking device includes a manhole door body and a rotary lock body. The rotary lock body is mounted on the surface of the manhole door body. The device also includes a block-changing mechanism and a pressure-bearing mechanism. The block-changing mechanism includes a concave pressure block, a T-shaped guide rib, and an L-shaped pressure plate. A concave pressure block is integrally formed on the inner rotating part of the rotary lock body, and a T-shaped guide groove for engaging the T-shaped guide rib is provided on the concave pressure block. The T-shaped guide rib is integrally formed on the concave stepped surface of the L-shaped pressure plate, and the L-shaped pressure plate and the concave pressure block are locked together by bolts. The pressure-bearing mechanism includes a concave receiving strip, a U-shaped clamp, a central magnetic block, a guide bolt, a flange nut, and a spring. An L-shaped pressure plate is pressed into the concave surface of the concave receiving strip, and an edge plate is fixed to the outer side of the concave receiving strip away from the L-shaped pressure plate. A U-shaped clamp is integrally formed on the surface of the edge plate, and a central magnetic block that magnetically attracts the L-shaped pressure plate is fitted into the cavity of the U-shaped clamp. A guide bolt for screwing the flange nut passes through the central magnetic block and the U-shaped clamp, and springs are fitted at the guide bolts on both sides of the U-shaped clamp.

[0006] Furthermore, mounting holes are provided between the concave pressure blocks and L-shaped pressure plates on both sides of the T-shaped guide rib, and bolts are screwed into the mounting holes of the concave pressure blocks and L-shaped pressure plates. By adopting the above technical solution, the T-shaped guide rib, the outer concave pressure block, and the L-shaped pressure plate have mounting holes that can be screwed on with bolts for locking.

[0007] Furthermore, the concave receiving strip has an arc groove centered on its surface for the L-shaped pressure plate to rotate and press in, and the concave receiving strip has symmetrical perforations on its surface away from the arc groove. By adopting the above technical solution, the concave receiving strip enters the groove to receive the L-shaped pressure plate as it rotates and is pressed in. At the same time, there is a through hole in the strip body of the concave receiving strip so that bolts can pass through.

[0008] Furthermore, a T-shaped hole is recessed on the surface of the block facing the L-shaped pressure plate of the central hole magnetic block, and the head of the guide bolt is inserted into the T-shaped hole of the central hole magnetic block. By adopting the above technical solution, after the guide bolt body passes through the T-shaped hole of the central magnetic block, the head of the guide bolt can be hidden inside the T-shaped hole, so that the central magnetic block can make magnetic contact with the L-shaped pressure plate.

[0009] Furthermore, a guide hole is provided through the central seat plate of the U-shaped clamp, and a threadless bolt with a guide bolt is inserted into the guide hole of the U-shaped clamp. By adopting the above technical solution, the guide bolt body can pass through the guide hole of the U-shaped clamp and be guided to move at the guide hole.

[0010] Furthermore, a nut block is screwed onto the outer bolt body of the guide bolt away from the spring and the flange nut, and the diameter of the spring coil is smaller than the diameter of the flange nut disc and the block of the central hole magnetic block; By adopting the above technical solution, the guide bolt passes through the central magnetic block, one set of spring bodies, U-shaped clamp, another set of spring bodies, and is screwed into the flange nut. It can also continuously screw into the nut block for rotational support, so that the hollow magnetic block can be guided and moved to change position within the U-shaped clamp, and can be elastically reset with the help of the spring.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This utility model sets a replacement block mechanism at the rotating lock body of the passenger compartment door and sets a pressure-bearing mechanism at the compartment near the passenger compartment door for matching rotation pressure. The replacement block mechanism adopts a detachable design with a combination of T-shaped guide ribs and bolts. The L-shaped pressure plate is a directly worn part. After it is damaged, it can be replaced simply by unscrewing the bolt. The concave support strip of the pressure-bearing mechanism can be unscrewed and disassembled and replaced separately after it is worn. This greatly reduces the maintenance complexity of the locking device at the passenger compartment door. Furthermore, the central magnetic block of the pressure-bearing mechanism, in conjunction with the spring and guide bolt, can elastically adapt to the position and magnetically limit the movement when the L-shaped pressure plate rotates and presses. The magnetic attraction assistance and elastic reset design of the central magnetic block make the locking process of the hatch body smoother, further improving the sealing reliability and operational safety of the hatch in long-term use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a passenger compartment door locking device according to the present invention.

[0013] Figure 2 This is an exploded view of the pressure mechanism of a passenger compartment door locking device according to this utility model.

[0014] Figure 3 This is an exploded view of the block changing mechanism of a passenger compartment door locking device according to this utility model.

[0015] In the diagram: 1. Passenger hatch body; 2. Rotary lock body; 3. Block changing mechanism; 4. Concave pressure block; 5. T-shaped guide groove; 6. T-shaped guide rib; 7. L-shaped pressure plate; 8. Pressure-bearing mechanism; 9. Concave pressure bar; 10. Side plate; 11. U-shaped clamp; 12. Center hole magnetic block; 13. Guide bolt; 14. Flange nut; 15. Spring; 16. Nut block. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figure 1-3As shown, a manned cabin door locking device includes a manned cabin door body 1 and a rotary lock body 2. The rotary lock body 2 is installed on the surface of the manned cabin door body 1. It also includes a block-changing mechanism 3 and a pressure-bearing mechanism 8. The block-changing mechanism 3 includes a concave pressure block 4, a T-shaped guide rib 6, and an L-shaped pressure plate 7. The concave pressure block 4 is integrally formed at the inward rotating part of the rotary lock body 2, and a T-shaped guide groove 5 for engaging the T-shaped guide rib 6 is provided at the concave pressure block 4. The T-shaped guide rib 6 is integrally formed on the concave stepped surface of the L-shaped pressure plate 7, and the L-shaped pressure plate 7 is locked to the concave pressure block 4 by bolts. The pressure-bearing mechanism 8 includes a concave... The concave receiving strip 9, U-shaped clamp 11, central hole magnetic block 12, guide bolt 13, flange nut 14, and spring 15 are included. An L-shaped pressure plate 7 is pressed into the concave surface of the concave receiving strip 9, and an edge plate 10 is fixed to the outer side of the concave receiving strip 9 away from the L-shaped pressure plate 7. The surface of the edge plate 10 is integrally formed with a U-shaped clamp 11, and a central hole magnetic block 12 that magnetically attracts the L-shaped pressure plate 7 is installed in the seat cavity of the U-shaped clamp 11. A guide bolt 13 for screwing the flange nut 14 passes through between the central hole magnetic block 12 and the U-shaped clamp 11, and springs 15 are sleeved at the guide bolts 13 on both sides of the U-shaped clamp 11.

[0018] Among them, mounting holes are provided between the concave pressure blocks 4 and L-shaped pressure plates 7 on both sides of the T-shaped guide rib 6, and bolts are screwed into the mounting holes of the concave pressure blocks 4 and L-shaped pressure plates 7. By adopting the above technical solution, there are mounting holes at the T-shaped guide rib 6, the outer concave pressure block 4, and the L-shaped pressure plate 7, which can be screwed on with bolts for locking.

[0019] Among them, the concave receiving strip 9 has an arc groove in the center of its strip surface for the L-shaped pressure plate 7 to rotate and press in, and the concave receiving strip 9 has symmetrical perforations on its strip surface away from the arc groove. By adopting the above technical solution, the concave receiving strip 9 enters the groove to receive the L-shaped pressure plate 7 as it rotates and is pressed in. At the same time, there is a through hole in the strip of the concave receiving strip 9 so that a bolt can pass through.

[0020] The central hole magnetic block 12 has a T-shaped hole recessed on the block surface facing the L-shaped pressure plate 7, and the head of the guide bolt 13 is inserted into the T-shaped hole of the central hole magnetic block 12. By adopting the above technical solution, after the guide bolt 13 passes through the T-shaped hole of the central hole magnetic block 12, the head of the guide bolt 13 can be hidden in the T-shaped hole, so that the central hole magnetic block 12 can magnetically contact the L-shaped pressure plate 7.

[0021] The U-shaped clamp 11 has a through hole at the center of the seat plate, and a threadless bolt 13 is inserted into the through hole of the U-shaped clamp 11. By adopting the above technical solution, the bolt body of the guide bolt 13 can pass through the guide hole of the U-shaped clamp 11 and be guided to move at the guide hole.

[0022] Wherein, the guide bolt 13 is screwed with a nut block 16 at the outer bolt body away from the spring 15 and the flange nut 14, and the diameter of the spring coil of the spring 15 is smaller than the diameter of the disc of the flange nut 14 and the block of the central hole magnetic block 12. By adopting the above technical solution, the guide bolt 13 passes through the central magnetic block 12, a set of spring bodies of the spring 15, the U-shaped clamp 11, another set of spring bodies of the spring 15, and is screwed into the flange nut 14. It can also be continuously screwed into the nut block 16 for screw-stop support, so that the hollow magnetic block 12 can be guided to move and change position within the U-shaped clamp 11, and can be elastically reset with the help of the spring 15.

[0023] It should be noted that this utility model is a manhole door locking device. By setting a block changing mechanism 3 at the rotating lock body 2 of the manhole door 1, and setting a pressure receiving mechanism 8, which can be installed in the cabin near the manhole door 1 to receive the block changing mechanism 3 for matching rotation and pressing, the concave pressure block 4 of the block changing mechanism 3 is integrally formed in the inner side block of the rotating lock block 2. The L-shaped pressure plate 7 is guided and clamped in the T-shaped guide groove 5 of the concave pressure block 4 by the T-shaped guide rib 6. Then, the L-shaped pressure plate 7 and the concave pressure block 4 are locked by bolts. Next, a concave retaining strip 9 is placed on one side of the cabin of the L-shaped pressure plate 7. A bolt is screwed into the cabin through the through hole of the concave retaining strip 9. The installation hole can be pre-drilled in the cabin. Then, the central hole magnetic block 12 can press a set of spring bodies of the spring 15 and be inserted into the U-shaped clamp 11. Subsequently, the guide bolt 13 passes through the central hole magnetic block 12, a set of spring bodies of the spring 15, the U-shaped clamp 11, and another set of spring bodies of the spring 15 and is screwed into the flange nut 14. The nut block 16 can be continuously screwed in for rotation stop support. When the handle of the rotating lock body 2 on the outside of the manhole door 1 is held by a person and rotated, the L-shaped pressure plate 7 can rotate into the concave retaining strip 9 for pressing. At the same time, the central hole magnetic block 12 can elastically change position with the help of the spring 15 and the guide bolt 13, thereby adapting to the rotating L-shaped pressure plate 7 for magnetic attraction limit, ensuring that the manhole door 1 can be firmly locked in the cabin. When the L-shaped pressure plate 7 and the concave strip 9 are damaged by friction, causing the cabin door 1 to be unable to lock, simply unscrew the bolt at the L-shaped pressure plate 7 to remove the L-shaped pressure plate 7 from the concave pressure block 4 for replacement. At the same time, the concave strip 9 can also be unscrewed from the cabin after the bolt is removed, thus making the concave strip 9 easy to replace.

[0024] It should be noted that this utility model is a locking device for a passenger cabin door. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A manhole door locking device, comprising a manhole door body (1) and a rotary lock body (2), wherein the rotary lock body (2) is mounted on the surface of the manhole door body (1), characterized in that: It also includes a block-changing mechanism (3) and a pressure-bearing mechanism (8). The block-changing mechanism (3) includes a concave pressure block (4), a T-shaped guide rib (6), and an L-shaped pressure plate (7). The concave pressure block (4) is integrally formed on the inner rotating body of the rotating lock body (2), and a T-shaped guide groove (5) for clamping the T-shaped guide rib (6) is provided on the concave pressure block (4). The T-shaped guide rib (6) is integrally formed on the concave step surface of the L-shaped pressure plate (7), and the plate of the L-shaped pressure plate (7) and the concave pressure block (4) are locked together by bolts. The pressure-bearing mechanism (8) includes a concave support bar (9), a U-shaped clamp (11), a central hole magnetic block (12), and a guide bolt (13). The flange nut (14) and spring (15) are provided. An L-shaped pressure plate (7) is pressed into the concave surface of the concave strip (9), and an edge plate (10) is fixed on the outer side of the concave strip (9) away from the L-shaped pressure plate (7). A U-shaped clamp (11) is integrally formed on the surface of the edge plate (10), and a central hole magnetic block (12) that magnetically attracts the L-shaped pressure plate (7) is installed in the seat cavity of the U-shaped clamp (11). A guide bolt (13) for screwing the flange nut (14) is passed through between the central hole magnetic block (12) and the U-shaped clamp (11), and springs (15) are sleeved at the guide bolts (13) on both sides of the U-shaped clamp (11).

2. The passenger compartment door locking device according to claim 1, characterized in that: Mounting holes are provided between the concave pressure blocks (4) and L-shaped pressure plates (7) on both sides of the T-shaped guide rib (6), and bolts are screwed into the mounting holes of the concave pressure blocks (4) and L-shaped pressure plates (7).

3. The passenger compartment door locking device according to claim 1, characterized in that: The concave receiving strip (9) has an arc groove in the center of its surface for the L-shaped pressure plate (7) to rotate and press in, and the concave receiving strip (9) has symmetrical perforations on its surface away from the arc groove.

4. The passenger compartment door locking device according to claim 1, characterized in that: The central hole magnetic block (12) has a T-shaped hole recessed on the surface of the block facing the L-shaped pressure plate (7), and the head of the guide bolt (13) is inserted into the T-shaped hole of the central hole magnetic block (12).

5. The passenger compartment door locking device according to claim 1, characterized in that: The U-shaped clamp (11) has a guide hole through the central seat plate, and a threadless bolt (13) is inserted into the guide hole of the U-shaped clamp (11).

6. The passenger compartment door locking device according to claim 1, characterized in that: The guide bolt (13) is screwed with a nut block (16) at the outer bolt body away from the spring (15) and the flange nut (14), and the diameter of the spring coil of the spring (15) is smaller than the diameter of the disc of the flange nut (14) and the block of the central hole magnetic block (12).

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