Safety protection device for building deep foundation pit excavation

Abstract

The utility model discloses a safety protection device for building deep foundation pit excavation, and belongs to the technical field of constructions.The safety protection device comprises a plurality of sets of supports arranged at the lower end of a transverse frame and a movable assembly arranged on the transverse frame, and a driving box and a protection mechanism are arranged at the lower end of the movable assembly; the protection mechanism comprises a rope arranged at the lower end of the driving box, a fixing plate connected through the rope, a fixing frame arranged at the lower end of the assembling plate and protection racks symmetrically arranged on the two sides of the fixing frame. The fixing plate and the assembling plate are connected through a plurality of sets of fixing chains. The head end of a rope wound on a wire roller in a driving box is fixed to the upper end of a fixing plate, then a work platform is composed of a fixing frame, a positioning plate and an assembling plate, the work platform is connected with the assembling plate on the work platform through a fixing chain, and when an emergency occurs, the work platform is used for carrying workers in a deep foundation pit to be separated from the deep foundation pit.

Description

Technical Field

[0001] This application relates to the field of construction technology, and specifically, it is a safety protection device for the excavation of deep building foundations. Background Art

[0002] The main function of a safety protection device is to protect personnel or important equipment and facilities from being damaged. When construction workers excavate deep building foundations, a protection device is required to protect the safety of the construction workers and prevent emergencies during work that may pose a threat to the personal safety of the construction workers.

[0003] The Chinese utility model patent with the publication number CN216766864U discloses a safety protection device for the excavation of deep building foundations. Through the self-locking property of the meshing of the worm and the worm wheel, it avoids the situation of the wire loosening during the wire winding process, thus ensuring that the worker can be safely lifted.

[0004] This solution lifts the worker out of the deep pit to ensure the safety of the worker. However, after the worker is lifted, he is above the center of the deep pit. Since there is a certain distance between the worker and the edge of the deep pit and the worker cannot move himself out of the range of the deep pit, staying in the suspended state for a long time will cause physical discomfort to the worker and there are also certain safety hazards.

[0005] Therefore, this application provides a safety protection device for the excavation of deep building foundations to solve the above problems. Utility Model Content

[0006] This application provides a safety protection device for the excavation of deep building foundations, aiming to solve the problem in the background art that the existing safety protection device can only lift the worker and there are safety hazards.

[0007] To achieve the above object, this application provides the following technical solution: A safety protection device for the excavation of deep building foundations, including several groups of brackets arranged at the lower end of a cross frame and a movable component arranged on the cross frame, and a driving box and a protection mechanism are arranged at the lower end of the movable component;

[0008] The protection mechanism includes a rope arranged at the lower end of the driving box, a fixing plate connected by the rope, a fixing frame arranged at the lower end of the assembly plate, and protection platform frames symmetrically arranged on both sides of the fixing frame. The fixing plate and the assembly plate are connected by several groups of fixing chains, the fixing frame and the assembly plate are connected by a positioning plate, and the rope is fixed to the fixing plate and connected to the four corners of the assembly plate by four groups of fixing chains at the lower end of the fixing plate, which is used to strengthen the stability during the lifting process of the assembly plate and the protection platform frames when the rope is wound in, and avoid rotation.

[0009] Preferably, the movable component includes a threaded rod disposed inside the horizontal frame and a movable plate sleeved on the threaded rod. A limiting groove for slidably connecting with the movable plate is formed inside the horizontal frame. One end of the horizontal frame is provided with a servo motor, and the output end of the servo motor is fixedly connected to one end of the threaded rod. The movable plate is slidably connected inside the horizontal frame, and at the same time, the movable plate is threadedly sleeved on the threaded rod. When the servo motor is started, it will drive the movable plate to move along the horizontal frame, and the protective platform for workers can approach the edge of the foundation pit, allowing the workers to fall to the ground.

[0010] Preferably, the drive box is fixedly connected to the lower end of the movable plate by bolts.

[0011] Preferably, a plurality of fixed seats are symmetrically arranged at the upper end of the fixed frame, and anti-detachment ropes are fixedly connected to the fixed seats. One end of the anti-detachment rope away from the fixed seat is fixedly connected to a safety hook. Before the worker stands on the protective platform and leaves the foundation pit, the safety hook locked on the limit ring can be opened and locked with the safety buckle on the safety clothing, which is used to play a role of secondary protection.

[0012] Preferably, a connecting rod is installed on the fixed frame, and a plurality of positioning seats corresponding to the fixed seats are fixedly sleeved on the connecting rod. Limit rings corresponding to the safety hooks are installed on both sides of the positioning seat.

[0013] Preferably, support seats are fixedly connected to the lower ends of the protective platforms, and the support seats at the lower ends of the two protective platforms are connected by a reinforcing rod.

[0014] In this safety protection device, by installing the drive box below the movable plate, relying on the fact that the head end of the rope wound on the wire roller inside the drive box is fixedly connected to the upper end of the fixed plate, and then a working platform is composed of a fixed frame, a positioning plate and an assembly plate, and is connected to the assembly plate on the working platform by a fixed chain. In case of an emergency, this working platform is used to carry the workers in the deep foundation pit out of the deep foundation pit. Compared with the traditional method of only lifting the workers, this working platform has a place where the workers can rest their feet and stand, and at the same time, multiple people can be transported out of the foundation pit at one time, with higher safety performance. During normal operation, the waste soil excavated in the foundation pit can be lifted and transported through the working platform, and it has a wide range of applicability.

[0015] In this safety protection device, by installing a connecting rod on the fixed frame and installing a plurality of fixed seats with anti-detachment ropes at the upper end of the assembly plate, when the worker stands on the protective platform and leaves the foundation pit, the safety hook locked on the limit ring can be opened and locked with the safety buckle on the safety clothing, which is used to play a role of anti-detachment protection and increase the safety of the worker when leaving the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a safety protection device for the excavation of deep building foundation pits;

[0017] Figure 2 It is a schematic diagram of the structure of the protective stand;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0019] In the figure:

[0020] 1. Bracket;

[0021] 2. Horizontal frame;

[0022] 21. Limiting groove; 22. Movable plate; 23. Threaded rod; 24. Servo motor;

[0023] 3. Drive box;

[0024] 31. Rope; 32. Fixing plate; 33. Fixing chain; 34. Assembly plate;

[0025] 4. Fixed frame;

[0026] 41. Protective stand; 42. Connecting rod; 43. Support seat; 44. Reinforcement rod; 45. Positioning plate;

[0027] 5. Fixed seat;

[0028] 51. Anti-slip rope; 52. Positioning seat; 53. Limiting ring; 54. Safety hook. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] This embodiment provides a safety protection device for deep foundation pit excavation. Figures 1-3 As shown, the safety protection device includes a plurality of brackets 1 arranged at the lower end of a horizontal frame 2 and a movable assembly arranged on the horizontal frame 2, and a driving box 3 and a protection mechanism are arranged at the lower end of the movable assembly;

[0031] The protection mechanism includes a rope 31 arranged at the lower end of the driving box 3 and a fixed plate 32 connected by the rope 31, a fixed frame 4 arranged at the lower end of the assembly plate 34, and a protection stand 41 symmetrically arranged on both sides of the fixed frame 4, the fixed plate 32 and the assembly plate 34 are connected by a plurality of sets of fixed chains 33, and the fixed frame 4 and the assembly plate 34 are connected by a positioning plate 45.

[0032] Specifically, a wire roller and a motor are provided inside the driving box 3, which mainly play the role of winding and releasing the rope 31, and the device is an existing technology. The rope 31 is fixed to the fixed plate 32 and connected to the four corners of the assembly plate 34 by four sets of fixed chains 33 at the lower end of the fixed plate 32, which are used to reinforce the stability of the assembly plate 34 and the protective stand 41 during the lifting process when the rope 31 is wound up to avoid rotation. The upper end of the fixed frame 4 is fixedly connected to the lower end of the assembly plate 34 by a positioning plate 45 and bolts, and the fixed frame 4 can be disassembled and removed independently for regular maintenance at a later time.

[0033] The movable component includes a threaded rod 23 arranged on the inner side of the cross frame 2 and a movable plate 22 mounted on the threaded rod 23. A limit groove 21 for sliding connection with the movable plate 22 is opened on the inner side of the cross frame 2. A servo motor 24 is installed at one end of the cross frame 2, and the output end of the servo motor 24 is fixedly connected to one end of the threaded rod 23.

[0034] More specifically, by opening a limit groove 21 on the inner side of the cross frame 2, a movable plate 22 is slidably connected to the inner side of the cross frame 2, and the movable plate 22 and the threaded rod 23 are threadedly mounted. When the servo motor 24 is started, the movable plate 22 is driven to move along the cross frame 2, so that the protective platform 41 carrying workers can approach the edge of the foundation pit, allowing the workers to fall to the ground and escape from the dangerous range of the foundation pit.

[0035] The driving box 3 is fixedly connected to the lower end of the movable plate 22 by bolts.

[0036] A plurality of sets of fixing seats 5 are symmetrically arranged on the upper end of the fixing frame 4, and the fixing seats 5 are all fixedly connected with anti-slip ropes 51, and one end of the anti-slip rope 51 away from the fixing seat 5 is fixedly connected with a safety hook 54, a connecting rod 42 is installed on the fixing frame 4, and a plurality of sets of positioning seats 52 corresponding to the fixing seats 5 are fixedly sleeved on the connecting rod 42, and limiting rings 53 corresponding to the safety hooks 54 are installed on both sides of the positioning seats 52.

[0037] It should be noted that before the workers stand on the protective platform 41 and leave the foundation pit, they can open the safety hook 54 locked on the limit ring 53 and lock it with the safety buckle on the safety suit to play a secondary protection role and increase the safety of the workers when leaving the foundation pit. When the safety hook 54 is not in use, the safety hook 54 can be locked on the limit ring 53 to prevent the safety hook 54 from being shaken and injuring the workers.

[0038] The lower ends of the protection racks 41 are fixedly connected with support seats 43 , and the support seats 43 at the lower ends of the two groups of protection racks 41 are connected via a reinforcing rod 44 .

[0039] It is worth mentioning that the support seats 43 at the lower ends of the two groups of protective gantries 41 are connected by inserting the reinforcing rods 44, which is used to strengthen the stability between the two protective gantries 41 and improve the load-bearing strength of the protective gantry 41.

[0040] During use, the servo motor 24 drives the movable plate 22 to move directly above the foundation pit, and the motor inside the drive box 3 drives the rope 31 to lower the protective gantry 41 into the foundation pit. The drive box 3 is installed below the movable plate 22. Relying on the fact that the head end of the rope 31 wound around the wire roller inside the drive box 3 is fixed to the upper end of the fixed plate 32, a working platform is formed by the fixed frame 4, the positioning plate 45 and the assembly plate 34 respectively, and is connected to the assembly plate 34 on the working platform through the fixed chain 33. In case of an emergency, the workers gather on the protective gantry 41, open the safety hook 54 locked on the limit ring 53 and lock it to the safety buckle on the safety suit. Finally, the motor inside the drive box 3 drives the rope 31 to take in the line again, hoist the protective gantry 41 to the top of the foundation pit, and then the servo motor 24 drives the movable plate 22 to move along the cross frame 2, so that the protective gantry 41 carrying the workers can approach the edge of the foundation pit, allowing the workers to fall to the ground and get out of the dangerous range of the foundation pit.

[0041] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and its concept of the present application, makes equivalent substitutions or changes, and should be covered by the protection scope of the present application.

Claims

1. A safety protection device for deep foundation pit excavation, comprising a plurality of brackets (1) arranged at the lower end of a horizontal frame (2) and a movable assembly arranged on the horizontal frame (2), wherein a driving box (3) and a protection mechanism are arranged at the lower end of the movable assembly; Features: The protection mechanism comprises a rope (31) arranged at the lower end of the driving box (3) and a fixing plate (32) connected by the rope (31), a fixing frame (4) arranged at the lower end of the assembly plate (34), and a protection stand (41) symmetrically arranged on both sides of the fixing frame (4); the fixing plate (32) and the assembly plate (34) are connected by a plurality of sets of fixing chains (33); and the fixing frame (4) and the assembly plate (34) are connected by a positioning plate (45).

2. The safety protection device for deep foundation pit excavation of a building according to claim 1 is characterized in that: The movable assembly comprises a threaded rod (23) arranged on the inner side of a cross frame (2) and a movable plate (22) sleeved with the threaded rod (23); a limit groove (21) for slidingly connecting with the movable plate (22) is provided on the inner side of the cross frame (2); a servo motor (24) is installed at one end of the cross frame (2), and an output end of the servo motor (24) is fixedly connected to one end of the threaded rod (23).

3. The safety protection device for deep foundation pit excavation of a building according to claim 1 is characterized in that: The drive box (3) is fixedly connected to the lower end of the movable plate (22) by means of bolts.

4. The safety protection device for deep foundation pit excavation of a building according to claim 1 is characterized in that: A plurality of groups of fixing seats (5) are symmetrically arranged on the upper end of the fixing frame (4), and each fixing seat (5) is fixedly connected with an anti-slip rope (51), and one end of the anti-slip rope (51) away from the fixing seat (5) is fixedly connected with a safety hook (54).

5. The safety protection device for deep foundation pit excavation of a building according to claim 1 is characterized in that: A connecting rod (42) is installed on the fixing frame (4), and a plurality of groups of positioning seats (52) corresponding to the fixing seats (5) are fixedly sleeved on the connecting rod (42), and limiting rings (53) corresponding to the safety hooks (54) are installed on both sides of the positioning seats (52).

6. The safety protection device for deep foundation pit excavation of a building according to claim 1 is characterized in that: The lower ends of the protection racks (41) are fixedly connected to support seats (43), and the support seats (43) at the lower ends of the two groups of protection racks (41) are connected via a reinforcing rod (44).

Images