Safety protection mechanism for construction of deep foundation pit safety passage

Abstract

This invention relates to the field of building construction and discloses a protective mechanism for construction of safety passages in deep foundation pits. The mechanism includes a detachable safety passage fixed to the upper end of the foundation pit. The safety passage comprises a fixed guardrail fixed to the upper end of the foundation pit, a ladder installed on the fixed guardrail and extending into the foundation pit, and a protective unit that can be raised and lowered on the ladder. The protective unit includes a movable guardrail installed on the ladder and located below the fixed guardrail, and fixed seats slidably connected to a fixed track on the side of the ladder and located on both sides of the movable guardrail. A limiting unit is installed on the fixed guardrail and the movable guardrail. A power unit is installed on the ladder and connected to the movable guardrail. The movable guardrail of this invention can adjust its height in real time according to the location of personnel, forming a comprehensive and dynamic protective barrier for construction workers, effectively preventing accidental falls and greatly improving the safety of deep foundation pit operations.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a protective mechanism for the construction of safety passages in deep foundation pits. Background Technology

[0002] In the construction industry, deep foundation pit operations are a common and somewhat dangerous task. Deep foundation pits are typically quite deep, requiring construction workers to frequently enter and exit them for various tasks, such as foundation construction, rebar tying, and formwork installation. However, existing safety access routes for deep foundation pits present numerous safety hazards and inconveniences.

[0003] The existing equipment has the following drawbacks: there are no reliable protective devices to prevent workers from falling accidentally when entering or exiting the foundation pit, especially when climbing ladders. Once a fall occurs, it often results in serious injuries or fatalities, causing huge losses to construction companies and their families.

[0004] Therefore, this application proposes a protective mechanism for the construction of safety passages in deep foundation pits to solve the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a protective mechanism for the construction of safety passages in deep foundation pits, so as to solve the problem of the lack of reliable protective devices to prevent personnel from accidentally falling.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a protective mechanism for construction of a safety passage in a deep foundation pit, comprising a safety passage that can be detachably fixed to the upper end of the foundation pit: The safety passage includes a fixed guardrail fixed to the upper end of the foundation pit, a ladder set on the fixed guardrail and extending into the foundation pit, and a protective unit that can be raised and lowered on the ladder; the protective unit includes a movable guardrail set on the ladder and located below the fixed guardrail, and a fixed seat slidably connected to a fixed track on the side of the ladder and located on both sides of the movable guardrail. A limiting unit is provided on the fixed guardrail and the movable guardrail to limit the installation position of the movable guardrail; A power unit, mounted on the ladder and connected to the movable guardrail, is used to control the movement of the movable guardrail on the ladder.

[0007] The limiting unit includes: Limiting components are symmetrically arranged on the movable guardrail and abut against the fixed guardrail, used to fix the movable guardrail and the fixed guardrail. A support member, disposed on the fixed guardrail and connected to the limiting member, is used to support the component; The first gear is mounted on the support and connected to the limiting member, and is used to transmit kinetic energy; An adjusting component, disposed on the fixed guardrail and connected to the first gear, is used to adjust the installation position of the limiting component.

[0008] The limiting member includes: A support base is provided on the movable guardrail to support the limiting component; A support rail is provided at the upper end of the support base; The second rack is slidably connected to the support rail and a limit block is provided at the position where it is connected to the support rail. The second rack is meshed with the first gear, and the lower end of the second rack abuts against the fixed guardrail.

[0009] The support member includes: A fixing block is fixed to the inside of the movable guardrail to support the component; The mounting plate is fixed to the upper end of the fixing block; A mounting shaft is fixed to the mounting plate, and the first gear is sleeved on the mounting shaft to support the first gear.

[0010] The adjusting element includes: A lifting block is slidably connected to the movable guardrail. The fixed guardrail is provided with a connecting rail for supporting the lifting block. The lifting block is provided with a connecting groove at the position corresponding to the connecting rail for the connecting rail to move. The first rack is mounted on the lifting block and meshes with the first gear.

[0011] The power unit includes: The top plate is fixed to the fixed base; A motor, located at the upper end of the top plate, is used to provide power for raising and lowering the movable guardrail; A rotating shaft is located at the power output end of the motor; The second gear, fixed on the rotating shaft, is used to transmit kinetic energy; The third rack is fixed to the ladder and meshes with the second gear.

[0012] The lifting block has a magnetic block on the side away from the first rack for fixing the two lifting blocks, and the lifting block has a control button for controlling the operation of the motor.

[0013] The upper end of the lifting block is equipped with a traction rope for attaching the lifting block to the neck of the worker.

[0014] The fixed base is equipped with a fall arrestor, which is slidably connected to the fixed track.

[0015] The security passage includes: A fixed base is attached to the upper end of the pit to secure the protective mechanism to the pit. The protective door can be flipped up and installed at an opening on one side of the fixed guardrail.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a height-adjustable protective unit design, enabling the movable guardrail to move flexibly on the ladder. During the process of construction workers climbing the ladder to enter and exit the foundation pit, the movable guardrail can adjust its height in real time according to the workers' location, forming a comprehensive and dynamic protective barrier. This effectively prevents accidental falls and greatly improves the safety of deep foundation pit operations. Compared to the traditional method of fixing the entire ladder with fixed guardrails, this movable guardrail can move according to the workers' positions, making the device more cost-effective and reducing blind spots. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention; Figure 2 This is a schematic diagram of the protective mechanism in one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the protective unit moving on the ladder in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the limiting unit and the power unit in one embodiment of the present invention; Figure 5 This is a schematic diagram of the limiting unit in one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the adjusting member driving the second rack in one embodiment of the present invention; Figure 7 This is a schematic diagram of a structure in one embodiment of the present invention where the support member is separated from the fixed guardrail; Figure 8 This is a schematic diagram of the connection between the fall arrestor and the fixed track in one embodiment of the present invention; Figure 9 This is a schematic diagram of the connection between the connecting rail and the adjusting component in one embodiment of the present invention; Figure 10 This is a schematic diagram of the connection between two lifting blocks in one embodiment of the present invention.

[0018] In the diagram: 1. Excavation pit; 2. Safety passage; 21. Fixed base; 22. Protective door; 23. Fixed guardrail; 24. Ladder; 241. Fixed track; 3. Protective unit; 31. Movable guardrail; 311. Connecting rail; 32. Fixed seat; 33. Fall arrestor; 4. Limiting unit; 41. Adjusting component; 411. Lifting block; 41101. Connecting groove; 412. First rack; 413. Magnetic block; 414. Traction rope; 415. Control button; 42. Support component; 421. Fixed block; 422. Mounting plate; 423. Mounting shaft; 43. First gear; 44. Second rack; 441. Limiting block; 45. Support seat; 451. Support rail; 5. Power unit; 51. Top plate; 52. Motor; 53. Rotating shaft; 54. Second gear; 55. Third rack. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-10 This invention provides a technical solution: a protective mechanism for construction of a safety passage in a deep foundation pit, comprising a safety passage 2 detachably fixed to the upper end of the foundation pit 1; the safety passage 2 includes a fixed guardrail 23 fixed to the upper end of the foundation pit 1, a ladder 24 set on the fixed guardrail 23 and extending into the foundation pit 1, and a protective unit 3 that can be raised and lowered on the ladder 24; the protective unit 3 includes a movable guardrail 31 set on the ladder 24 and located below the fixed guardrail 23, and fixed seats 32 slidably connected to the side of the ladder 24 on a fixed track 241 and located on both sides of the movable guardrail 31; a limiting unit 4 set on the fixed guardrail 23 and the movable guardrail 31, used to limit the installation position of the movable guardrail 31; and a power unit 5 set on the ladder 24 and connected to the movable guardrail 31, used to control the movement of the movable guardrail 31 on the ladder 24.

[0021] It should be noted that during operation, the safety passage 2 is fixed to the upper end of the pit 1, and the ladder 24 is extended into the pit 1 and fitted against its inner wall. The ladder 24 is then fixed to the side wall of the pit 1 with bolts. Workers then climb from the top of the pit 1 onto the ladder 24, securing their safety belts to the movable guardrail 31. The workers then manually adjust the limit unit 4 to separate the movable guardrail 31 from the fixed guardrail 23. As the ladder 24 moves up and down, the workers use control elements to drive the power unit 5, thereby controlling the movable guardrail 31 to descend with them on the ladder 24. In the event of a slippage, the workers can use the control elements to stop the power unit 5. The movable guardrail 31 will be fixed on the ladder 24, and the construction workers can be stably fixed in a set position on the ladder 24 under the protection of the movable guardrail 31. This application uses the design of the liftable protective unit 3 to make the movable guardrail 31 move flexibly on the ladder 24. During the process of construction workers climbing the ladder 24 to enter and exit the foundation pit 1, the movable guardrail 31 can adjust its height in real time according to the position of the personnel, forming an all-round and dynamic protective barrier for the construction workers, effectively preventing personnel from falling accidentally, and greatly improving the safety of deep foundation pit operations. Compared with the traditional method of fixing the entire ladder 24 with fixed guardrail 23, the movable guardrail 31 can move according to the position of the construction workers. This device is more cost-effective and can reduce blind spots.

[0022] In one embodiment, the limiting unit 4 includes: a limiting member symmetrically disposed on the movable guardrail 31 and abutting against the fixed guardrail 23, for fixing the movable guardrail 31 and the fixed guardrail 23; a supporting member 42 disposed on the fixed guardrail 23 and connected to the limiting member, for supporting the component; a first gear 43 disposed on the supporting member 42 and connected to the limiting member, for transmitting kinetic energy; and an adjusting member 41 disposed on the fixed guardrail 23 and connected to the first gear 43, for adjusting the installation position of the limiting member.

[0023] This design is for reference. Figure 4 The construction worker holds the adjusting piece 41 and pulls it downward to separate the adjusting piece 41 from the fixed guardrail 23. During the downward movement of the adjusting piece 41, it will drive the first gear 43 to rotate on the support piece 42. During the rotation of the first gear 43, it will drive the limiting piece to move away from the fixed guardrail 23 and then detach from the upper end of the fixed guardrail 23, releasing the fixed guardrail 23 from restricting the movable guardrail 31. Then the movable guardrail 31 can move on the ladder 24 under the drive of the power unit 5.

[0024] In one embodiment, the limiting member includes: a support base 45, disposed on the movable guardrail 31, for supporting the limiting member; a support rail 451, disposed on the upper end of the support base 45; a second rack 44, slidably connected to the support rail 451, and a limiting block 441 is provided at the position where it is connected to the support rail 451, the second rack 44 meshing with the first gear 43, and the lower end of the second rack 44 abutting against the fixed guardrail 23.

[0025] This design is for reference. Figure 4-7 By setting the limiting component, the movable guardrail 31 can be fixed to the fixed guardrail 23 when not in use. When construction personnel need to go down into the pit 1, the driving adjustment component 41 is moved down. When the adjustment component 41 moves down, the first gear 43 rotates on the support component 42, thereby driving the second rack 44 on the support rail 451 to move away from the fixed guardrail 23. Thus, the second rack 44 separates from the fixed guardrail 23, releasing the restriction between the fixed guardrail 23 and the movable guardrail 31, so that the movable guardrail 31 can move on the ladder 24.

[0026] In one embodiment, the support member 42 includes: a fixing block 421, fixed to the inner side of the movable guardrail 31, for supporting the component; a mounting plate 422, fixed to the upper end of the fixing block 421; and a mounting shaft 423, fixed to the mounting plate 422 and with the first gear 43 sleeved on the mounting shaft 423, for supporting the first gear 43.

[0027] This design is for reference. Figure 4-7 ,as well as Figure 9 The fixing block 421 is fixed inside the movable guardrail 31, providing a solid foundation for the entire support component 42. The mounting plate 422 is fixed on the upper end of the fixing block 421, and the mounting shaft 423 is fixed on the mounting plate 422, forming a multi-layer support structure that can provide stable support for the first gear 43.

[0028] In one embodiment, the adjusting member 41 includes: a lifting block 411, which is slidably connected to the movable guardrail 31; a connecting rail 311 for supporting the lifting block 411 is provided on the fixed guardrail 23; and a connecting groove 41101 for the connecting rail 311 to move is provided at the position of the lifting block 411 corresponding to the connecting rail 311; and a first rack 412, which is disposed on the lifting block 411 and meshes with the first gear 43.

[0029] This design is for reference. Figure 5-6 ,as well as Figure 9-10The worker holds the side of the lifting block 411 and pulls it downward. As the first rack 412 moves downward, it meshes with the first gear 43, causing the first gear 43 to rotate on the mounting shaft 423. The connecting rail 311 on the fixed guardrail 23 can restrict the lifting block 411, so that the lifting block 411 can only move up and down along the connecting rail 311, thereby improving the stability of the connection between the first rack 412 and the first gear 43.

[0030] In one embodiment, the power unit 5 includes: a top plate 51 fixed on a fixed base 32; a motor 52 disposed at the upper end of the top plate 51 for providing power for the lifting and lowering of the movable guardrail 31; a rotating shaft 53 disposed at the power output end of the motor 52; a second gear 54 fixed on the rotating shaft 53 for transmitting kinetic energy; and a third rack 55 fixed on the ladder 24 and meshing with the second gear 54.

[0031] This design is for reference. Figure 1-4 After the fixed guardrail 23 is separated from the movable guardrail 31, the construction workers descend the ladder 24. At this time, the workers can turn on the motor 52 through the control equipment, so that the motor 52 drives the rotating shaft 53 to rotate. Then the second gear 54 meshes with the third rack 55, thereby driving the second gear 54 to move up and down on the third rack 55, so that the fixed seat 32 slides on the fixed track 241, thereby driving the movable guardrail 31 to move up and down on the ladder 24, providing safety protection for the descending construction workers.

[0032] In one embodiment, a magnetic block 413 for fixing the two lifting blocks 411 is provided on the side of the lifting block 411 away from the first rack 412, and a control button 415 for controlling the operation of the motor 52 is provided on the lifting block 411.

[0033] This design is for reference. Figure 6 ,as well as Figure 10 When the two lifting blocks 411 are removed from the connecting rail 311, the two magnetic blocks 413 are connected to each other, so that the magnetic blocks 413 are magnetically attracted and fixed, thereby merging the two lifting blocks 411 into a whole. Multiple control buttons 415 are provided on the lifting blocks 411 to control the opening and closing of the motor 52, the rotation speed and the rotation direction, thereby controlling the moving direction, moving speed, stopping and moving of the movable guardrail 31 on the ladder 24.

[0034] In one embodiment, the upper end of the lifting block 411 is provided with a traction rope 414 for hanging the lifting block 411 around the neck of the worker.

[0035] This design is for reference. Figure 9 ,as well as Figure 10To facilitate the storage of the lifting blocks 411 by construction workers, a traction rope 414 is installed at the upper end of the lifting blocks 411. After the two lifting blocks 411 are fixed, the two traction ropes 414 are tied together, and then the traction rope 414 is hung around the neck of the construction workers to facilitate carrying the lifting blocks 411.

[0036] In one embodiment, a fall arrestor 33 is provided on the fixed base 32, and the fall arrestor 33 is slidably connected to the fixed track 241.

[0037] This design is for reference. Figure 8 In the construction scenario of foundation pit 1, equipment such as movable guardrail 31 may be at risk of accidental fall due to various emergencies, such as motor 52 failure or loose connecting parts. The fall arrestor 33 is slidably connected to the fixed track 241. When the movable guardrail 31 has a tendency to fall, the fall arrestor 33 will quickly lock the fixed track 241 to prevent it from falling further, providing reliable safety for construction personnel and equipment, greatly reducing the possibility of fall accidents, and effectively protecting the safety of personnel and equipment property.

[0038] In one embodiment, the safety passage 2 includes: a fixed base 21, fixed to the upper end of the pit 1, used to fix the protective mechanism to the pit 1; and a protective door 22, which can be flipped and installed at the opening on one side of the fixed guardrail 23.

[0039] This design is for reference. Figure 1-3 The fixed base 21 is fixed to the upper end of the pit 1, providing a solid and reliable foundation for the entire safety passage 2. The protective door 22, which can be flipped and installed at the opening on one side of the fixed guardrail 23, can effectively isolate the pit 1 from the external area when needed. When the protective door 22 is closed, it can prevent unauthorized personnel from entering the pit 1 and avoid accidents such as accidental falls.

[0040] Furthermore, if the embodiments involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relation to the specification. The significance or implied number of the indicated technical features is not specified. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

Claims

1. A protective mechanism for construction of safety passages in deep foundation pits, characterized in that, Includes a detachable safety passage (2) fixed to the upper end of the foundation pit (1): The safety passage (2) includes a fixed guardrail (23) fixed to the upper end of the pit (1), a ladder (24) set on the fixed guardrail (23) and extending into the pit (1), and a protective unit (3) that can be raised and lowered on the ladder (24); the protective unit (3) includes a movable guardrail (31) set on the ladder (24) and located below the fixed guardrail (23), and a fixed seat (32) slidably connected to the fixed track (241) on the side of the ladder (24) and located on both sides of the movable guardrail (31). A limiting unit (4) is provided on the fixed guardrail (23) and the movable guardrail (31) to limit the installation position of the movable guardrail (31); A power unit (5) is installed on the ladder (24) and connected to the movable guardrail (31) for controlling the movement of the movable guardrail (31) on the ladder (24).

2. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 1, characterized in that: The limiting unit (4) includes: Limiting components are symmetrically arranged on the movable guardrail (31) and abut against the fixed guardrail (23) to fix the movable guardrail (31) and the fixed guardrail (23); A support member (42) is provided on the fixed guardrail (23) and connected to the limiting member, for supporting the component; The first gear (43) is disposed on the support (42) and connected to the limiting member, and is used to transmit kinetic energy; An adjusting member (41) is provided on the fixed guardrail (23) and connected to the first gear (43) for adjusting the installation position of the limiting member.

3. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 2, characterized in that: The limiting component includes: A support base (45) is provided on the movable guardrail (31) to support the limiting component; A support rail (451) is provided at the upper end of the support base (45); The second rack (44) is slidably connected to the support rail (451) and a limit block (441) is provided at the position where it is connected to the support rail (451). The second rack (44) meshes with the first gear (43) and the lower end of the second rack (44) abuts against the fixed guardrail (23).

4. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 2, characterized in that: The support member (42) includes: A fixing block (421) is fixed to the inside of the movable guardrail (31) to support the component; Mounting plate (422) is fixed to the upper end of the fixing block (421); Mounting shaft (423) is fixed on mounting plate (422) and the first gear (43) is sleeved on mounting shaft (423) for supporting the first gear (43).

5. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 2, characterized in that: The adjusting member (41) includes: The lifting block (411) is slidably connected to the movable guardrail (31). The fixed guardrail (23) is provided with a connecting rail (311) for supporting the lifting block (411). The lifting block (411) is provided with a connecting groove (41101) at the position corresponding to the connecting rail (311) for the connecting rail (311) to move. The first rack (412) is mounted on the lifting block (411) and meshes with the first gear (43).

6. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 5, characterized in that: The power unit (5) includes: The top plate (51) is fixed on the fixed base (32); A motor (52) is installed at the upper end of the top plate (51) to provide power for the lifting and lowering of the movable guardrail (31); A rotating shaft (53) is located at the power output end of the motor (52); The second gear (54) is fixed on the rotating shaft (53) and is used to transmit kinetic energy; The third rack (55) is fixed on the ladder (24) and meshes with the second gear (54).

7. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 6, characterized in that: A magnetic block (413) for fixing the two lifting blocks (411) is provided on the side away from the first rack (412). A control button (415) for controlling the operation of the motor (52) is provided on the lifting block (411).

8. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 7, characterized in that: The upper end of the lifting block (411) is provided with a traction rope (414) for hanging the lifting block (411) around the neck of the worker.

9. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 1, characterized in that: A fall arrestor (33) is provided on the fixed base (32), and the fall arrestor (33) is slidably connected to the fixed track (241).

10. The protective mechanism for construction of a safety passage in a deep foundation pit according to claim 1, characterized in that: The security passage (2) includes: A fixed base (21) is fixed to the upper end of the pit (1) to fix the protective mechanism to the pit (1); The protective door (22) can be flipped and installed at the opening on one side of the fixed guardrail (23).

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