Hole safety device

Abstract

This invention belongs to the field of shipbuilding safety technology and discloses a hole safety device, including a blocking unit, a reset unit, and a locking unit. The blocking unit includes a blocking plate assembly and a top support module. The top support module is fixed inside the hole, and the blocking plate assembly is rotatably mounted on the top support module. The reset unit includes a reset elastic element and a reset connector. The reset elastic element is configured to maintain the blocking plate assembly in a closed state. The locking unit includes a locking slider and a locking elastic element. The locking elastic element is configured to maintain the locking slider in a locked state. This device not only fixes the blocking plate assembly through the top support module but also automatically restores the blocking plate assembly to a closed state using the reset elastic element and ensures that the blocking plate assembly remains locked to the hole under the action of the locking slider when not in use. This avoids risks caused by human error and risks such as displacement or slippage of the blocking plate assembly, exhibiting high reliability and safety.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding safety technology, and in particular to a hole safety device. Background Technology

[0002] During the construction phase of a ship, unfinished sections of the ship contain various unsealed openings, such as hatches, access passages, and stairwells. Due to the construction sequence, these openings may remain unsealed for a period of time, during which these open but unprotected openings pose certain safety risks.

[0003] The commonly used control method is to cover every hole, which involves temporarily placing grid panels or similar materials in places where holes exist. However, this method not only poses risks such as displacement and slippage, but also has significant safety hazards due to the possibility of forgetting to put the grid panels back in during repeated entry and exit.

[0004] Therefore, there is an urgent need for a hole safety device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a hole safety device with reset and self-locking functions, which is reliable and highly safe.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A hole safety device is provided, the hole safety device comprising:

[0008] A shielding unit, comprising a shielding plate assembly and a top support module, wherein the top support module is fixed inside the hole and is used to support the shielding plate assembly, and the shielding plate assembly is rotatably mounted on the top support module to realize the switching between an open state and a closed state;

[0009] A reset unit includes a reset elastic element and a reset connector. The reset connector is connected to both ends and the middle section of the reset elastic element. The reset connectors at both ends of the reset elastic element are connected to the top support module, and the reset connectors at the middle section of the reset elastic element are connected to the baffle plate assembly. The reset elastic element is configured to maintain the baffle plate assembly in the closed state.

[0010] A locking unit, the locking unit includes a latch slider and a locking elastic member. A chute is provided on a side of the baffle group facing away from the top support module. The latch slider is slidably disposed in the chute to achieve the conversion between the locked state and the unlocked state. One end of the locking elastic member is connected to the baffle group, and the other end is connected to the latch slider. The locking elastic member is configured to make the latch slider always maintain the movement tendency of the locked state.

[0011] Optionally, the top support module includes a plurality of fixing members and a connecting pipe group. The plurality of fixing members are fixedly connected in a "pin" shape distribution in the hole. The connecting pipe group is connected between two adjacent fixing members. The baffle group is rotatably disposed on the fixing member located between the two connecting pipe groups.

[0012] Optionally, the top support module further includes a fixed shaft sleeve. The fixed shaft sleeve is connected to the fixing member located between the two connecting pipe groups. The baffle group includes a closing plate, a first shaft sleeve and a rotating shaft. The rotating shaft is rotatably inserted into the fixed shaft sleeve. The chute is provided on the closing plate. Two spaced first shaft sleeves are connected to a side of the closing plate facing away from the chute. The two first shaft sleeves are sleeved on the rotating shaft and are located on both sides of the fixed shaft sleeve.

[0013] Optionally, a plurality of uniformly distributed through holes are provided on the closing plate.

[0014] Optionally, the hole safety device further includes a stopping unit. The stopping unit includes a stopping member, a second shaft sleeve and a T-shaped stopping pin. The stopping member includes a first abutting surface and a second abutting surface. Two spaced second shaft sleeves are provided at the junction of the first abutting surface and the second abutting surface. The second shaft sleeve is sleeved on the rotating shaft and is located on a side of the first shaft sleeve facing away from the fixed shaft sleeve. The first abutting surface always abuts against the surface of the closing plate facing the top support module and is provided with a plugging hole communicating with the through hole. When the closing plate is in the open state, the T-shaped stopping pin passes through the through hole and is inserted into the plugging hole to keep the closing plate in the open state. The second abutting surface abuts against the fixing member connected with the fixed shaft sleeve when the closing plate is in the closed state.

[0015] Optionally, the connecting pipe group includes a central pipe and a connecting pipe. The two ends of the central pipe are provided with internally threaded portions with opposite helix directions. The connecting pipe is inserted at both ends of the central pipe. The connecting pipe is provided with an externally threaded portion with a helix direction adapted to the corresponding internally threaded portion. The side of the connecting pipe facing away from the central pipe is connected to the fixing member.

[0016] Optionally, the connecting pipe assembly further includes a support sleeve, which is fitted onto the central pipe to support the baffle assembly.

[0017] Optionally, the locking unit further includes an end plate, a sliding guide rod, an unlocking rod, and a sliding sleeve. The end plates are respectively connected to both sides of the sliding groove along the sliding direction of the latch slider. The sliding guide rod is connected between the two end plates. The sliding sleeve is slidably fitted onto the sliding guide rod. The latch slider is connected to the side of the sliding sleeve facing the hole. The unlocking rod is connected to the other side of the sliding sleeve away from the latch slider. The locking elastic element is fitted onto the sliding guide rod and is connected to the sliding sleeve and the end plate respectively.

[0018] Optionally, the shielding plate assembly further includes a handle connected to the outer surface of the sealing plate opposite to the hole.

[0019] Optionally, the shield assembly further includes a handrail connected to the inner surface of the enclosure facing the opening.

[0020] The beneficial effects of this invention are:

[0021] This invention provides a hole safety device. A top support module is installed inside the hole, and a flip-up baffle assembly is mounted on the top support module. The opening and closing of the hole is achieved by flipping the baffle assembly, and the top support module secures the baffle assembly, preventing displacement or slippage. A reset elastic element, connected to the baffle assembly and the top support module by a reset connector, ensures the baffle assembly maintains a closed position. Even if the operator forgets to reset the baffle assembly during entry or exit, the device automatically restores it to a closed state using the reset elastic element, mitigating human-caused risks. Furthermore, a locking slider controlled by a locking elastic element is installed on the baffle assembly, ensuring it remains locked to the hole when not in use. Therefore, this hole safety device not only has reset and self-locking functions but also provides reliable fixation and high safety. Attached Figure Description

[0022] Figure 1 This is a front structural view of the hole safety device provided by the present invention;

[0023] Figure 2 This is a rear structural view of the hole safety device provided by the present invention;

[0024] Figure 3 This is a schematic diagram of the shielding plate assembly in the hole safety device provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the top support module in the hole safety device provided by the present invention;

[0026] Figure 5 This is a schematic diagram of the reset unit in the hole safety device provided by the present invention;

[0027] Figure 6 This is an exploded view of the locking unit in the hole safety device provided by the present invention;

[0028] Figure 7 This is a schematic diagram of the stop unit in the hole safety device provided by the present invention.

[0029] In the picture:

[0030] 1. Shielding unit; 11. Shielding plate assembly; 111. Enclosing plate; 1111. Slide groove; 1112. Through hole; 1113. Round tube; 112. First bushing; 113. Rotating shaft; 114. Connecting pin; 115. Handle; 116. Handrail; 12. Top support module; 121. Fixing component; 122. Connecting pipe assembly; 1221. Central tube; 1222. Connecting pipe; 1223. Support sleeve; 1224. Enclosing ring piece; 123. Connecting bolt; 124. Fixing bushing;

[0031] 2. Reset unit; 21. Reset elastic element; 22. Reset connector;

[0032] 3. Locking unit; 31. Locking slider; 311. Connecting part; 312. Locking part; 32. Locking elastic element; 33. End plate; 34. Sliding guide rod; 35. Unlocking rod; 36. Sliding sleeve;

[0033] 4. Stop unit; 41. Stop component; 42. Second bushing; 43. T-type stop pin. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0038] During the construction phase of a ship, unfinished sections of the ship contain various unsealed openings, such as hatches, access passages, and stairwells. Due to the construction sequence, these openings may remain unsealed for a period of time, during which these open but unprotected openings pose certain safety risks.

[0039] The commonly used control method is to cover every hole, which involves temporarily placing grid panels or similar materials where holes exist. However, this method not only poses risks such as displacement and slippage, but also carries significant safety hazards due to the possibility of forgetting to put the grid panels back during repeated entry and exit.

[0040] Therefore, in order to reduce the risks of use and safety hazards, this embodiment provides a hole safety device.

[0041] like Figures 1 to 7As shown, the hole safety device includes a shielding unit 1, a reset unit 2, and a locking unit 3. The shielding unit 1 includes a shielding plate assembly 11 and a top support module 12. The top support module 12 is fixed inside the hole and is used to support the shielding plate assembly 11. The shielding plate assembly 11 is rotatably mounted on the top support module 12 to achieve the switching between an open state and a closed state. The reset unit 2 includes a reset elastic element 21 and a reset connecting element 22. The reset connecting element 22 is respectively connected to both ends and the middle section of the reset elastic element 21. The reset connecting elements 22 located at both ends of the reset elastic element 21 are connected to the top support module 12. The middle section reset connector 22 is connected to the baffle assembly 11. The reset elastic member 21 is configured to keep the baffle assembly 11 in a closed state. The locking unit 3 includes a locking slider 31 and a locking elastic member 32. The baffle assembly 11 has a groove 1111 on the side away from the top support module 12. The locking slider 31 is slidably disposed in the groove 1111 to realize the switching between the locked state and the unlocked state. One end of the locking elastic member 32 is connected to the baffle assembly 11, and the other end is connected to the locking slider 31. The locking elastic member 32 is configured to keep the locking slider 31 in a locked state.

[0042] By installing a top support module 12 inside the hole and a flip-up baffle assembly 11 on the top support module 12, the hole can be opened and closed by flipping the baffle assembly 11. The top support module 12 fixes the baffle assembly 11, avoiding the risk of displacement or slippage of the baffle assembly 11. Furthermore, a reset elastic element 21 connected by a reset connector 22 is installed between the baffle assembly 11 and the top support module 12, thereby ensuring that the baffle assembly 11 always has a tendency to remain in a closed state. Even if the operator forgets to reset the shield assembly 11 when entering or exiting, the device can automatically restore the shield assembly 11 to a closed state using the reset elastic element 21, avoiding risks caused by human error. Furthermore, by providing a locking slider 31 controlled by the locking elastic element 32 on the shield assembly 11, the shield assembly 11 remains locked to the opening under the action of the locking slider 31 when the device is not in use. Therefore, this opening safety device not only has reset and self-locking functions, but is also reliably fixed and highly safe. In this embodiment, the reset elastic element 21 is a spring, the reset connector 22 is a hollow ring, and the reset connector 22 is welded to the top support plate assembly and the shield assembly 11.

[0043] Optionally, such as Figure 2 and Figure 4As shown, the top support module 12 includes a plurality of fixing members 121 and a connecting pipe group 122. The plurality of fixing members 121 are fixedly connected in the holes in a "pin" shape distribution. A connecting pipe group 122 is connected between two adjacent fixing members 121. The baffle plate group 11 is rotatably arranged on the fixing member 121 located between the two connecting pipe groups 122. By fixedly connecting the plurality of fixing members 121 in the holes in a "pin" shape distribution and connecting a connecting pipe group 122 between two adjacent fixing members 121, a triangular layout with high stability is formed, ensuring that the top support module 12 has high structural strength and the stability after the connection of the top support module 12, and avoiding the risk of slippage and displacement.

[0044] In this embodiment, the top support module 12 further includes a connecting bolt 123. The connecting bolt 123 is connected to the structural member in the hole by passing through the fixing member 121, thus facilitating the disassembly and assembly of the top support module 12 and improving the convenience of use. Among them, in order to facilitate subsequent connection and considering the manufacturing cost, the fixing member 121 is made of angle steel and is provided with a through hole for the connecting bolt 123 to pass through.

[0045] Optionally, as Figure 2 and Figure 4 shown, the top support module 12 further includes a fixed bushing 124. The fixed bushing 124 is connected to the fixing member 121 located between the two connecting pipe groups 122. The baffle plate group 11 includes a closing plate 111, a first bushing 112 and a rotating shaft 113. The rotating shaft 113 is rotatably inserted into the fixed bushing 124. A sliding groove 1111 is formed on the closing plate 111. Two spaced first bushings 112 are connected to the side of the closing plate 111背离滑槽1111. The two first bushings 112 are sleeved on the rotating shaft 1 and are located on both sides of the fixed bushing 124.

[0046] By rotatably inserting the rotating shaft 113 into the fixed bushing 124 and sleeving the first bushing 1 inserted on the closing plate 111 on the rotating shaft 113, the flipping function of the closing plate 111 is realized. And because the two first bushings 112 connected to the closing plate 111 are located on both sides of the fixed bushing 124, the fixed bushing 124 also has a limiting function, thus avoiding the displacement of the closing plate 111 along the axial direction of the rotating shaft 113.

[0047] Optionally, as Figure 3As shown, the sealing plate 111 has multiple evenly distributed through holes 1112. By creating multiple evenly distributed through holes 1112 on the sealing plate 111, the sealing plate 111 can both seal the holes and ensure smooth airflow within the holes. In this embodiment, to increase the structural reliability of the sealing plate 111 when sealing the holes, a circular tube 1113 is welded around the sealing plate 111 as a perimeter.

[0048] Optionally, such as Figure 2 , Figure 7 As shown, the hole safety device also includes a stop unit 4. The stop unit 4 includes a stop member 41, a second bushing 42, and a T-shaped stop pin 43. The stop member 41 includes a first abutting surface and a second abutting surface. Two spaced second bushings 42 are provided at the junction of the first abutting surface and the second abutting surface. The second bushings 42 are sleeved on the rotating shaft 113 and are located on the side of the first bushing 112 away from the fixed bushing 124. The first abutting surface always abuts against the surface of the sealing plate 111 facing the top support module 12 and has an insertion hole communicating with the through hole 1112. When the sealing plate 111 is in the open state, the T-shaped stop pin 43 passes through the through hole 1112 and is inserted into the insertion hole to keep the sealing plate 111 in the open state. When the sealing plate 111 is in the closed state, the second abutting surface abuts against the fixing member 121 connected to the fixed bushing 124.

[0049] Because the safety device for the hole is equipped with a reset elastic element 21 to reset the closed plate 111, if the closed plate 111 is in the open state, the operator needs to hold the closed plate 111 at all times to keep it in the open state. Therefore, by setting a stop unit 4 composed of a stop element 41, a second bushing 42 and a T-shaped stop pin 43, when the closed plate 111 needs to be kept in the open state, the T-shaped stop pin 43 is inserted through the through hole 1112 on the closed plate 111 into the insertion hole of the stop element 41, and the other end of the T-shaped stop pin 43 is locked on the external structure, so that the closed plate 111 can be kept in the open state, thus facilitating the operation.

[0050] In this embodiment, the baffle assembly 11 further includes a connecting pin 114, and the rotating shaft 113 and the second bushing 42 are connected by the connecting pin 114. The stop member 41 is a quarter-cylinder, and the first abutment surface and the second abutment surface are respectively two planes of the stop member 41 that connect to the arc surface.

[0051] Optionally, such as Figure 4As shown, the connecting pipe assembly 122 includes a central pipe 1221 and connecting pipes 1222. The central pipe 1221 has internal threads with opposite directions at both ends, and connecting pipes 1222 are inserted into both ends of the central pipe 1221. Each connecting pipe 1222 has an external thread that matches the corresponding internal thread direction. The side of the connecting pipe 1222 facing away from the central pipe 1221 is connected to the fixing member 121. By providing internal threads with opposite directions at both ends of the central pipe 1221 and matching external threads on the connecting pipes 1222, the lengthening or shortening of the connecting pipes 1222 can be achieved by screwing the central pipe 1221, thereby adjusting the distance between the fixing members 121 to accommodate holes of different sizes, thus expanding the applicability of this hole safety device. In this embodiment, the connecting pipe 1222 is welded to the fixing member 121.

[0052] Optionally, such as Figure 4 As shown, the connecting pipe assembly 122 also includes a support sleeve 1223, which is fitted onto the central pipe 1221 to support the baffle assembly 11. By providing the support sleeve 1223, the outer diameter of the central pipe 1221 is increased, which facilitates the support of the sealing plate 111 on the one hand, and allows the central pipe 1221 to be screwed on the other hand through the support sleeve 1223.

[0053] In this embodiment, the connecting pipe assembly 122 further includes a sealing ring plate 1224, which is disposed at both ends of the support sleeve 1223 to seal the gap between the support sleeve 1223 and the central pipe 1221, so as to prevent external humid air from entering between the support sleeve 1223 and the central pipe 1221 and causing corrosion.

[0054] Optionally, such as Figure 2 , Figure 3 , Figure 6 As shown, the locking unit 3 also includes an end plate 33, a sliding guide rod 34, an unlocking rod 35, and a sliding sleeve 36. The end plates 33 are connected to both sides of the sliding groove 1111 along the sliding direction of the locking slider 31. The sliding guide rod 34 is connected between the two end plates 33. The sliding sleeve 36 is slidably fitted onto the sliding guide rod 34. The locking slider 31 is connected to the side of the sliding sleeve 36 facing the hole. The unlocking rod 35 is connected to the other side of the sliding sleeve 36 away from the locking slider 31. The locking elastic element 32 is fitted onto the sliding guide rod 34 and connected to both the sliding sleeve 36 and the end plate 33. By connecting the unlocking rod 35 and the locking slider 31 to both sides of the sliding sleeve 36, the operator can easily use the unlocking rod 35 to control the sliding sleeve 36 to drive the locking slider 31 to slide on the sliding guide rod 34, thereby achieving locking and unlocking between the sealing plate 111 and the hole. This ensures that when not in use, the sealing plate 111 and the hole are locked in a closed state, preventing accidental opening of the sealing plate 111.

[0055] In this embodiment, the sliding guide rod 34 is a rectangular rod, and the sliding sleeve 36 is a hollow rectangular square tube. The unlocking rod 35 and the locking slider 31 are welded to the sliding sleeve 36. To achieve the locking function of the locking slider 31, the locking slider 31 includes a connecting part 311 and a locking part 312. The locking part 312 is a right-angled triangle, and the connecting part 311 is connected to one of the right-angled sides of the locking part 312. The hypotenuse of the locking part 312 faces the hole side, and the locking elastic element 32 is a spring.

[0056] Optionally, such as Figure 1 As shown, the baffle assembly 11 also includes a handle 115, which is connected to the outer surface of the sealing plate 111 facing away from the hole. By providing a handle 115 on the outer surface of the sealing plate 111 facing away from the hole, it is convenient for the operator to lift the sealing plate 111 from outside the hole. In this embodiment, the handle 115 is made of bent steel pipe and welded to the side of the sealing plate 111 where the locking unit 3 is provided, so that the sealing plate 111 can be lifted while unlocking, making the operation more convenient.

[0057] Optionally, such as Figure 2 As shown, the shielding plate assembly 11 also includes a handrail 116, which is connected to the inner surface of the enclosed plate 111 facing the opening. By providing the handrail 116 on the inner surface of the enclosed plate 111 facing the opening, it is convenient for operators to hold the enclosed plate 111 inside the opening. In this embodiment, the handrail 116 is made of bent steel pipe, and the number of handrails 116 can be freely set according to needs. In this embodiment, four handrails are provided on the enclosed plate 111, arranged symmetrically in pairs on both sides of the enclosed plate 111.

[0058] When installing the hole safety device, first, according to the size of the hole, screw the support sleeve 1223 so that the connecting pipes 1222 connected to both sides of the central pipe 1221 can move the fixing component 121. After the adjustment is completed, use bolts to fix the fixing component 121 to the inner wall of the hole.

[0059] After installation, the sealing plate 111 is in a closed state. When it is necessary to open the sealing plate 111 to enter or exit the hole, first pull the unlocking rod 35 towards the top support module 12 to compress the locking elastic element 32. This causes the sliding sleeve 36 connected to the unlocking rod 35 to drive the locking slider 31 to slide along the sliding guide rod 34 until the locking slider 31 disengages from the upper wall of the hole. Then, keep the unlocking rod 35 in its current position and the operator pulls the handle 115 with the other hand to open the sealing plate 111. At this time, the reset elastic element 21 is in a stretched state, and the locking elastic element 32 returns to its original state. If it is necessary to keep the sealing plate 111 open, insert the stop pin through the through hole 1112 on the sealing plate 111 into the insertion hole of the stop element 41, and make the other end of the stop pin engage externally. Structurally, the enclosure plate 111 is fixed, allowing the operator to enter the hole for work. After the work is completed, the operator leaves the hole, holds the handle 115 with one hand, and removes the stop pin with the other. At this time, since the reset elastic element 21 is in a stretched state after opening, the enclosure plate 111 flips from the open state to the closed state under the action of the reset elastic element 21's own elastic force. At this time, the inclined edge on the locking part 312 of the locking slider 31 contacts the inner edge of the hole. Under the action of gravity, the locking part 312 moves in the direction of compressing the locking elastic element 32 until the locking part 312 is completely inside the hole. The compressed locking elastic element 32 drives the locking slider 31 to reset under its own elastic force, thus locking the enclosure plate 111 and the hole.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A hole safety device, characterized in that, The described hole safety device includes: A shielding unit (1), the shielding unit (1) includes a shielding plate group (11) and a top support module (12), the top support module (12) is fixed inside the hole and is used to carry the shielding plate group (11), the shielding plate group (11) is rotatably arranged on the top support module (12) to realize the conversion between the open state and the closed state; A reset unit (2), the reset unit (2) includes a reset elastic member (21) and a reset connecting member (22), the reset connecting member (22) is respectively connected to both ends and the middle section of the reset elastic member (21), the reset connecting members (22) located at both ends of the reset elastic member (21) are connected to the top support module (12), the reset connecting member (22) located in the middle section of the reset elastic member (21) is connected to the shielding plate group (11), and the reset elastic member (21) is configured to make the shielding plate group (11) always maintain the movement trend of the closed state; A locking unit (3), the locking unit (3) includes a lock catch slider (31) and a locking elastic member (32), a chute (1111) is opened on one side of the shielding plate group (11)背离 the top support module (12), the lock catch slider (31) is slidably arranged in the chute (1111) to realize the conversion between the locked state and the unlocked state, one end of the locking elastic member (32) is connected to the shielding plate group (11), and the other end is connected to the lock catch slider (31), and the locking elastic member (32) is configured to make the lock catch slider (31) always maintain the movement trend of the locked state; The top support module (12) includes a plurality of fixing members (121) and a connecting pipe group (122), the plurality of fixing members (121) are distributed in a "pin" shape and fixedly connected inside the hole, the connecting pipe group (122) is connected between adjacent two of the fixing members (121), and the shielding plate group (11) is rotatably arranged on the fixing member (121) located between the two connecting pipe groups (122); The top support module (12) further includes a fixed shaft sleeve (124), the fixed shaft sleeve (124) is connected to the fixing member (121) located between the two connecting pipe groups (122), the shielding plate group (11) includes a closing plate (111), a first shaft sleeve (112) and a rotating shaft (113), the rotating shaft (113) is rotatably inserted into the fixed shaft sleeve (124), the chute (1111) is opened on the closing plate (111), two spaced first shaft sleeves (112) are connected to the side of the closing plate (111)背离 the chute (1111), and the two first shaft sleeves (112) are sleeved on the rotating shaft (113) and are located on both sides of the fixed shaft sleeve (124).

2. The hole safety device according to claim 1, characterized in that, A plurality of uniformly distributed through holes (1112) are opened on the closing plate (111).

3. The hole safety device according to claim 2, characterized in that, The hole safety device further includes a stop unit (4), which includes a stop member (41), a second bushing (42), and a T-shaped stop pin (43). The stop member (41) includes a first abutment surface and a second abutment surface. Two second bushings (42) are provided at the junction of the first abutment surface and the second abutment surface. The second bushings (42) are sleeved on the rotating shaft (113) and located on the side of the first bushing (112) away from the fixed bushing (124). The first abutment surface always abuts against the shaft. The T-shaped stop pin (43) is inserted into the plug hole through the through hole (1112) on the surface of the closed plate (111) facing the top support module (12) and has a plug hole communicating with the through hole (1112). When the closed plate (111) is in the open state, the T-shaped stop pin (43) passes through the through hole (1112) and is inserted into the plug hole to keep the closed plate (111) in the open state. When the closed plate (111) is in the closed state, the second abutting surface abuts against the fixing member (121) connected to the fixing bushing (124).

4. The hole safety device according to claim 1, characterized in that, The connecting pipe assembly (122) includes a central pipe (1221) and a connecting pipe (1222). The two ends of the central pipe (1221) are provided with internal threads of opposite directions. The connecting pipe (1222) is inserted into both ends of the central pipe (1221). The connecting pipe (1222) is provided with external threads that are adapted to the corresponding internal thread direction. The side of the connecting pipe (1222) away from the central pipe (1221) is connected to the fixing member (121).

5. The hole safety device according to claim 4, characterized in that, The connecting pipe assembly (122) also includes a support sleeve (1223), which is fitted onto the central pipe (1221) to support the baffle assembly (11).

6. The hole safety device according to claim 1, characterized in that, The locking unit (3) further includes an end plate (33), a sliding guide rod (34), an unlocking rod (35), and a sliding sleeve (36). The end plate (33) is connected to both sides of the sliding groove (1111) along the sliding direction of the locking slider (31). The sliding guide rod (34) is connected between the two end plates (33). The sliding sleeve (36) is slidably fitted on the sliding guide rod (34). The locking slider (31) is connected to the side of the sliding sleeve (36) facing the hole. The unlocking rod (35) is connected to the other side of the sliding sleeve (36) away from the locking slider (31). The locking elastic element (32) is fitted on the sliding guide rod (34) and is connected to the sliding sleeve (36) and the end plate (33) respectively.

7. The hole safety device according to claim 1, characterized in that, The shielding plate assembly (11) also includes a handle (115) connected to the outer surface of the sealing plate (111) opposite to the hole.

8. The hole safety device according to claim 1, characterized in that, The shielding panel assembly (11) also includes a handrail (116) connected to the inner surface of the enclosure (111) facing the hole.

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