Foundation pit protection device for earth excavation in building construction

Abstract

The utility model discloses a foundation pit protection device for building construction earth excavation, and aims to solve the problem that in the prior art, according to the requirements of modern construction specifications, the foundation pit protection device for building construction earth excavation is manufactured along with the limitation of the use of a protection net along with the excavation depth or width of a foundation pit. The protection device is characterized by comprising a protection net, a mounting column, a protection device and a reinforcing device, the mounting column is arranged at the bottom of the protection net, the protection device is arranged on one side of the protection net and is in sliding connection with the protection net, a fastening device is fixedly arranged at the top of the protection net, and the protection net and the protection device are locked through the fastening device. The reinforcing device is fixedly arranged on the lower portion of the protective net, and the protective height of the protective net can be conveniently adjusted according to different excavation specifications of the foundation pit in the building construction process, so that construction requirements are better met, the use convenience and functionality of the protective net are improved, and the construction efficiency of excavation of the foundation pit is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit protection devices, in particular to a foundation pit protection device for earth excavation in construction. Background Art

[0002] The foundation pit protection device refers to the protective facilities installed around the foundation pit during the foundation pit excavation process in the construction process, so as to ensure the normal and safe progress of the excavation and reduce the occurrence of safety accidents.

[0003] Traditional foundation pit protection devices generally install protective nets on the ground around the foundation pit, thereby enclosing the entire foundation pit and isolating the foundation pit construction site, thereby improving construction efficiency. However, in actual use, it is found that according to the requirements of modern construction specifications, as the depth or width of the foundation pit excavation, that is, the change in specifications, new requirements will be made for the protective net, and the height of the protective net will be required to increase. At this time, it is necessary to replace the protective net with a higher specification. This method is very inconvenient and reduces work efficiency. At the same time, the use of protective nets has certain limitations.

[0004] With the development of my country's infrastructure, tunnels and tunnels are commonly seen in various water conservancy, highway, railway and other engineering projects. The inspection of the compressive strength of shotcrete is an essential quality inspection in the construction process of tunnels and tunnels. At various tunnels and tunnel construction sites, shotcrete test blocks will be made according to the specifications and placed at the construction site for maintenance. Utility Model Content

[0005] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a protective device for foundation pit excavation in construction, which solves the problem in the prior art that, according to the requirements of modern construction specifications, the use of protective nets has certain limitations as the depth or width of the foundation pit excavation increases. At this time, it is necessary to replace the protective nets with higher specifications, which causes great inconvenience and reduces work efficiency.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A protective device for an earth excavation pit during construction, characterized in that it comprises a protective net, a mounting column, a protecting device and a reinforcing device, wherein the mounting column is arranged at the bottom of the protective net, the protecting device is arranged at one side of the protective net and is slidably connected to the protective net, a fastening device is fixedly arranged on the top of the protective net, the protective net and the protecting device are locked by the fastening device, and the reinforcing device is fixedly arranged at the bottom of the protective net.

[0008] Furthermore, the protective device includes a protective plate, and a rotating shaft is provided on both sides of the lower part of the protective plate. A plurality of threaded grooves and reinforcement grooves arranged in a row are opened on the side of the protective plate corresponding to the protective net. The fastening device corresponds to the threaded grooves and the reinforcement grooves. Slide grooves are symmetrically provided on both sides of the protective net, and the rotating shaft is slidably arranged in the slide grooves.

[0009] Furthermore, the rotating shaft is rotatably connected to the protective plate, and a clamping mechanism is fixedly provided on the rotating shaft. By setting the clamping mechanism, the stability of the rotating shaft position is ensured after the protective plate determines the adjustment position, and the threaded groove is located between the two rows of reinforcement grooves.

[0010] Furthermore, the clamping mechanism includes a stabilizing plate, which is fixedly arranged on a side of the rotating shaft away from the protective plate. The stabilizing plate is provided with screws for fixing the protective net. Through the setting of the screws, the rotating shaft can be fixed by positioning the screws on the stabilizing plate at a position corresponding to the protective net after sliding, thereby ensuring the stability of the rotating shaft position.

[0011] Furthermore, the fastening device includes a mounting plate fixed to the top of the protective net, a bolt passes through the mounting plate and is threadedly connected to the thread groove, and a nut is provided on the side of the bolt close to the protective plate. Through the setting of the nut, when the bolt is threadedly connected to the thread groove, the bolt is not easy to rotate and is not easy to disengage from the thread groove, thereby ensuring the stable setting of the protective plate.

[0012] Furthermore, the fastening device also includes a rotating frame symmetrically fixed on the top of the protective net, and a reinforcement plate is arranged on the rotating frame, and the reinforcement plate is clamped with the reinforcement groove. Through the clamping setting of the reinforcement plate and the reinforcement groove, the protective net can better maintain stability when the protection height is adjusted, thereby improving the stability of the protective plate.

[0013] Furthermore, the reinforcement groove is fixedly provided with a reinforcement pad, which is a rubber pad. By providing the reinforcement pad, the friction force when the reinforcement plate is clamped in the reinforcement groove is further increased, so that the connection is more stable and the protection net is better kept stable.

[0014] Furthermore, the reinforcement device includes an assembly plate, which is fixedly arranged on the lower outer surface of the protective net. A reinforcement frame is inserted through the assembly plate. The reinforcement frame is U-shaped, and a screw is threadedly connected through the middle of the reinforcement frame, so that the installation of the protective net is more stable and firm, and it is not easy to shake, thereby improving the stability of the protective net and better protecting the excavation of the foundation pit.

[0015] Furthermore, a knob is fixedly provided at one end of the screw rod, and the other end is rotatably connected to the assembly plate. A plurality of anti-slip protrusions are provided on the surface of the knob. Through the setting of the knob, the screw rod can be rotated more conveniently and quickly, so that the reinforcement frame can be inserted into the ground more quickly, thereby improving the convenience of using the reinforcement device.

[0016] Furthermore, a bearing is fixedly provided on the upper surface of the middle part of the assembly plate, and the inner ring of the bearing is fixedly connected to the screw. Through the setting of the bearing, the screw is not easily damaged by excessive friction with the surface of the assembly plate during rotation, thereby ensuring the normal use of the screw.

[0017] The beneficial effects of the utility model are:

[0018] In the utility model, by setting the protection device, the protection height can be conveniently adjusted according to the different excavation specifications of the foundation pit; a rotating shaft is set in the protection device, which makes it more convenient and quick to adjust the height of the protection device; the tightening device set in the rotating shaft ensures the stability of the position of the rotating shaft after the rotating shaft slides; by setting the reinforcement device, the installation of the protection net is more stable and firm, and it is not easy to shake, which improves the stability of the protection net and better protects the excavation of the foundation pit; during the construction process, the protection net can quickly adjust the protection height through the device, so as to better adapt to the needs of construction, improve the convenience and functionality of the use of the protection net, and further improve the construction efficiency of the foundation pit excavation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the protection device of the utility model;

[0022] Figure 3 It is a schematic diagram of the side three-dimensional structure of the protection device of the utility model;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the reinforcement device of the utility model;

[0024] 1. Protective net; 2. Mounting column; 3. Protective device; 31. Rotating shaft; 32. Protective plate; 33. Threaded groove; 34. Mounting plate; 35. Bolt; 36. Rotating frame; 37. Reinforcement plate; 38. Reinforcement groove; 39. Reinforcement pad; 310. Stabilizing plate; 311. Screw; 312. Nut; 4. Reinforcement device; 41. Assembly plate; 42. Reinforcement frame; 43. Screw; 44. Knob; 45. Bearing; DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1, in this embodiment, as Figure 1 As shown, a protective device for earthwork excavation pit in construction, comprising a protective net 1, a mounting column 2, a protecting device 3 and a reinforcing device 4, wherein the mounting column 2 is arranged at the bottom of the protective net 1, and the mounting column 2 is two cylindrical bodies; the protecting device 3 is arranged on one side of the protective net 1 and is slidably connected to the protective net 1, so that the protective net 1 can conveniently adjust the protective height according to the different excavation specifications of the foundation pit during the construction process, so as to better adapt to the construction needs; a fastening device is fixedly arranged on the top of the protective net 1, and the protective net 1 and the protecting device 3 are locked by the fastening device, so that the protective net 1 can better maintain stability when the protective height is adjusted, thereby improving the stability of the protecting plate 32; the reinforcing device 4 is fixedly arranged at the lower part of the protective net 1, so that the installation of the protective net 1 is more stable and firm, and it is not easy to shake, thereby improving the stability of the protective net 1 and better protecting the excavation of the foundation pit.

[0027] On the basis of the above-mentioned embodiment, as a preferred embodiment, the protection device 3 includes a protection plate 32, and a rotating shaft 31 is provided on both sides of the lower part of the protection plate 32. A plurality of threaded grooves 33 arranged in a row and reinforcement grooves 38 arranged in a row are opened on the side of the protection plate 32 corresponding to the protective net 1. The fastening device corresponds to the threaded grooves 33 and the reinforcement grooves 38. Slide grooves are symmetrically provided on both sides of the protective net 1, and the rotating shaft 31 is slidably set in the slide grooves, so that the protection device can adjust the height according to needs.

[0028] On the basis of the above-mentioned embodiment, as a preferred embodiment, the rotating shaft 31 is rotatably connected to the protective plate 32 , a clamping mechanism is fixedly provided on the rotating shaft 31 , and the threaded groove 33 is located between two rows of reinforcement grooves 38 .

[0029] On the basis of the above-mentioned embodiment, as a preferred embodiment, the clamping mechanism includes a stabilizing plate 31, and the stabilizing plate 310 is fixedly arranged on the side of the rotating shaft 31 away from the protective plate 32. The stabilizing plate 310 is an L-shaped plate, and the gap between the L-shaped plate and the rotating shaft cooperates with the wall of the sliding groove. The stabilizing plate 310 is provided with a screw 311 for fixing the protective net 1. Through the setting of the screw 311, the rotating shaft 31 can be tightened against the protective net 1 by the screw 311 on the stabilizing plate 310 after sliding, thereby ensuring the stability of the position of the rotating shaft 31.

[0030] Embodiment 2 is further optimized on the basis of embodiment 1. In this embodiment, Figure 3 As shown, the fastening device includes a mounting plate 34 fixed to the top of the protective net 1, a bolt 35 passes through the mounting plate 34 and is threadedly connected to the thread groove 33, and a nut 312 is provided on the side of the bolt 35 close to the protective plate 32. Through the setting of the nut 312, when the bolt 35 is threadedly connected to the thread groove 33, the bolt 35 is not easy to rotate, and is not easy to separate from the thread groove 33, thereby ensuring the stable setting of the protective plate 32.

[0031] On the basis of the above-mentioned embodiment, as a preferred embodiment, the fastening device also includes a rotating frame 36 symmetrically fixed on the top of the protective net 1, and a reinforcement plate 37 is arranged on the rotating frame 36, and the reinforcement plate 37 is clamped with the reinforcement groove 38. Through the clamping setting of the reinforcement plate 37 and the reinforcement groove 38, the protective net 1 can better maintain stability when the protection height is adjusted, thereby improving the stability of the protective plate 32.

[0032] On the basis of the above-mentioned embodiment, as a preferred embodiment, the reinforcement groove 38 is fixedly provided with a reinforcement pad 39, and the reinforcement pad 39 can be set as a rubber pad, so that the friction force when the reinforcement plate 37 is clamped in the reinforcement groove 38 is further increased, thereby making the connection more stable and better maintaining the stability of the protective net 1.

[0033] Embodiment 3 is further optimized on the basis of embodiment 2. In this embodiment, the reinforcement device 4 includes an assembly plate 41, and the assembly plate 41 is fixedly arranged on the lower outer surface of the protective net 1. A reinforcement frame 42 is inserted through the assembly plate 41. The reinforcement frame 42 is U-shaped, and a screw 43 is threadedly connected to the middle of the reinforcement frame 42, so that the installation of the protective net 1 is more stable and firm, and it is not easy to shake, thereby improving the stability of the protective net 1 and better protecting the excavation of the foundation pit.

[0034] On the basis of the above-mentioned embodiment, as a preferred embodiment, a knob 44 is fixedly provided at one end of the screw rod 43, and the other end is rotatably connected to the assembly plate 41. A plurality of anti-slip protrusions are provided on the surface of the knob 44, which increases the friction force when rotating the screw rod 43, making the rotation of the screw rod 43 more labor-saving and quick.

[0035] On the basis of the above-mentioned embodiment, as a preferred embodiment, a bearing 45 is fixedly provided on the upper surface of the middle part of the assembly plate 41, and the inner ring of the bearing 45 is fixedly connected to the screw 43. Through the setting of the bearing 45, the screw 43 is not easily damaged by excessive friction with the surface of the assembly plate 41 during rotation, thereby ensuring the normal use of the screw 43.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective device for earthwork excavation pit in construction, characterized in that: The invention comprises a protective net (1), a mounting column (2), a protection device (3) and a reinforcement device (4), wherein the mounting column (2) is arranged at the bottom of the protective net (1), the protection device (3) is arranged at one side of the protective net (1) and is slidably connected to the protective net (1), a fastening device is fixedly arranged at the top of the protective net (1), the protective net (1) and the protection device (3) are locked by the fastening device, and the reinforcement device (4) is fixedly arranged at the bottom of the protective net (1).

2. A construction excavation pit protection device according to claim 1, characterized in that: The protection device (3) comprises a protection plate (32), and rotating shafts (31) are provided on both sides of the lower part of the protection plate (32). A plurality of thread grooves (33) arranged in a row and reinforcement grooves (38) arranged in a row are provided on the side of the protection plate (32) corresponding to the protection net (1). The fastening device corresponds to the thread grooves (33) and the reinforcement grooves (38). Slide grooves are symmetrically provided on both sides of the protection net (1), and the rotating shafts (31) are slidably arranged in the slide grooves.

3. A construction excavation pit protection device according to claim 2, characterized in that: The rotating shaft (31) is rotatably connected to the protective plate (32); a clamping mechanism is fixedly provided on the rotating shaft (31); and the threaded groove (33) is located between two rows of reinforcement grooves (38).

4. A construction excavation pit protection device according to claim 3, characterized in that: The clamping mechanism comprises a stabilizing plate (310), the stabilizing plate (310) being fixedly arranged on a side of the rotating shaft (31) away from the protective plate (32), and the stabilizing plate (310) being provided with screws (311) for fixing the protective net (1).

5. The protective device for earthwork excavation pit in construction according to claim 2, characterized in that: The fastening device comprises a mounting plate (34) fixed to the top of the protective net (1), a bolt (35) passing through the mounting plate (34) and being threadedly connected to the thread groove (33), and a nut (312) is provided on one side of the bolt (35) close to the protective plate (32).

6. A construction excavation pit protection device according to claim 5, characterized in that: The fastening device further comprises a rotating frame (36) symmetrically fixed to the top of the protective net (1), a reinforcing plate (37) being arranged on the rotating frame (36), and the reinforcing plate (37) being snap-connected with the reinforcing groove (38).

7. A construction excavation pit protection device according to claim 6, characterized in that: The reinforcement groove (38) is fixedly provided with a reinforcement pad (39), and the reinforcement pad (39) is a rubber pad.

8. The protective device for earthwork excavation pit in construction according to claim 1, characterized in that: The reinforcing device (4) comprises an assembly plate (41), the assembly plate (41) being fixedly arranged on the lower outer surface of the protective net (1), a reinforcing frame (42) being inserted through the assembly plate (41), the reinforcing frame (42) being U-shaped, and a screw rod (43) being threadedly connected through the middle of the reinforcing frame (42).

9. A construction excavation pit protection device according to claim 8, characterized in that: A knob (44) is fixedly provided at one end of the screw rod (43), and the other end is rotatably connected to the assembly plate (41), and a plurality of anti-slip protrusions are provided on the surface of the knob (44).

10. A construction excavation pit protection device according to claim 8 or 9, characterized in that: A bearing (45) is fixedly provided on the upper surface of the middle portion of the assembly plate (41), and the inner ring of the bearing (45) is fixedly connected to the screw rod (43).

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