Foundation pit safety box

Abstract

The utility model belongs to the field of foundation pit construction, and particularly relates to a foundation pit safety box which comprises a three-fold steel plate, the three-fold steel plate comprises a vertical plate, an upper plate and a lower plate, a plurality of threaded holes are formed in the upper plate, and the upper plate is fixed to the ground above a foundation pit through bolts penetrating through the threaded holes; two vertical plates are symmetrically welded to the lower plate, a plurality of adjusting threaded holes are formed in the vertical plates from top to bottom, a safety box is placed on the portion, between the two vertical plates, of the lower plate, a safety belt is placed in the safety box, adjusting bolts penetrate through the adjusting threaded holes and then abut against the outer side wall of the safety box, and the safety box is clamped through the adjusting bolts on the two sides of the vertical plates. The safety box is located above the top beam of the lower stair in the foundation pit, the side wall of the foundation pit does not need to be punched during installation, a safety belt or other safety articles are placed in the safety box, workers can take the safety belt from the safety box to enter the foundation pit for operation before entering the interior of the foundation pit, and time and physical strength are saved.

Description

Technical Field

[0001] This utility model belongs to the field of foundation pit construction, and in particular relates to a foundation pit safety box. Background Technology

[0002] As the on-site foundation pit construction enters the main stage, working at heights has become a daily part of the construction work. Currently, before workers can work inside the foundation pit, they need to go to a distant warehouse to get their safety belts, which wastes both time and energy. A device that makes it easier to retrieve safety belts is needed. Summary of the Invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a foundation pit safety box.

[0004] This invention is achieved through the following technical solution:

[0005] A foundation pit safety box includes a three-fold steel plate. The three-fold steel plate includes a vertical plate, with the upper edge of the vertical plate integrally and vertically connected to an upper plate outwards, and the lower edge of the vertical plate integrally and vertically connected to a lower plate inwards. The upper plate has several threaded holes, and the upper plate is fixed to the ground above the foundation pit by bolts passing through the threaded holes. Two vertical plates are symmetrically welded to the lower plate, with the vertical plates perpendicular to the vertical plates and the lower plate. The vertical plates have several adjusting threaded holes from top to bottom. A safety box is placed on the lower plate between the two vertical plates, and a safety belt is placed inside the safety box. Adjusting bolts pass through the adjusting threaded holes and abut against the outer wall of the safety box. The safety box is clamped by adjusting bolts on both sides of the vertical plates.

[0006] Preferably, the upper plate has L-shaped narrow plates fixed to both sides by bolts. The upper part of the L-shaped narrow plate extends outward from the upper plate. The part of the L-shaped narrow plate extending outward from the upper plate is fixed to the ground above the foundation pit by bolts. The lower part of the L-shaped narrow plate is parallel to the vertical plate. Several clamping threaded holes are provided on the lower part of the L-shaped narrow plate. The clamping bolts pass vertically through the clamping threaded holes and abut against the vertical plate.

[0007] Preferably, the distance between the lower part of the L-shaped narrow plate and the vertical plate is 1-3cm.

[0008] Preferably, the clamping bolt is a flathead hand-tightening bolt.

[0009] Preferably, the height of the upright plate is 20-30cm.

[0010] The safety box of this invention is located above the capping beam at the bottom of the stairs inside the foundation pit. The safety box contains safety belts or other safety items. Before entering the foundation pit, workers can stand on the capping beam, take the safety belt from the safety box, and go down the stairs to enter the foundation pit to work. This saves workers time and energy. Moreover, the installation of the safety box of this invention does not require drilling holes in the side wall of the foundation pit, and will not damage the side support structure of the foundation pit. It can also hold safety boxes of different sizes and can be easily moved as the construction site changes. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure after installation in this embodiment;

[0012] Figure 2 This is an enlarged structural diagram of the installed structure in this embodiment;

[0013] Figure 3 This is a schematic diagram of the overall structure of this embodiment;

[0014] Figure 4 This is a schematic diagram of the structure after the safety box has been removed in this embodiment;

[0015] Figure 5 This is a schematic diagram of the partial structure of this embodiment.

[0016] In the diagram, 1 is the crown beam, 2 is the vertical plate, 3 is the upper plate, 4 is the lower plate, 5 is the bolt, 6 is the vertical plate, 7 is the adjusting threaded hole, 8 is the safety box, 9 is the adjusting bolt, 10 is the L-shaped narrow plate, 11 is the clamping threaded hole, and 12 is the clamping bolt. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, but not all embodiments.

[0018] This embodiment includes a three-fold steel plate, which includes an upper plate 3, a vertical plate 2, and a lower plate 4. Both the upper plate 3 and the lower plate 4 are perpendicular to the vertical plate 2, but the bending directions of the upper plate 3 and the lower plate 4 are opposite. The upper plate 3 bends outward relative to the vertical plate 2, that is, the upper edge of the vertical plate 2 is integrally and vertically connected to the upper plate 3 outward. The lower plate 4 bends inward relative to the vertical plate 2, that is, the lower edge of the vertical plate 2 is integrally and vertically connected to the lower plate 4 inward. Here, "inward" refers to the side facing into the pit, and "outward" refers to the side away from the pit.

[0019] The upper plate 3 is provided with several threaded holes. The upper plate 3 is fixed to the ground above the foundation pit by bolts 5 passing through the threaded holes. There is no need to drill holes in the inner wall of the foundation pit, and the support structure inside the foundation pit will not be damaged.

[0020] Two vertical plates 6 are symmetrically welded onto the lower plate 4. The height of the vertical plates 6 is 20-30cm, and the vertical plates 6 are perpendicular to both the vertical plate 2 and the lower plate 4. A safety box 8 is placed on the lower plate 4 between the two vertical plates 6, and a safety belt is placed inside the safety box 8. Several adjusting threaded holes 7 are provided on the vertical plates 6 from top to bottom. Adjusting bolts 9 pass through the adjusting threaded holes 7 and abut against the outer wall of the safety box 8. The safety box 8 is clamped by the adjusting bolts 9 on both sides of the vertical plates 6.

[0021] Since the distance between the upper surface of some foundation pits and the capping beam 1 is far, to prevent slight swaying of the vertical plate 2 or the lower plate 4, preferably, L-shaped narrow plates 10 are provided on both sides of the upper plate 3. The L-shaped narrow plate 10 is composed of two long steel plates and can be fixed to the upper plate 3 by bolts 5. The upper part of the L-shaped narrow plate 10 extends outward from the upper plate 3, and the part of the L-shaped narrow plate 10 extending outward from the upper plate 3 is fixed to the ground above the foundation pit by bolts 5. The lower part of the L-shaped narrow plate 10 is parallel to the vertical plate 2, and the distance between the lower part of the L-shaped narrow plate 10 and the vertical plate 2 is 1-3 cm. Several clamping threaded holes 11 are provided from top to bottom on the lower part of the L-shaped narrow plate 10. The clamping bolts 12 pass vertically through the clamping threaded holes 11 and abut against the vertical plate 2 to prevent the vertical plate 2 from swaying and ensure the stability of the safety box 8. Preferably, the clamping bolts 12 are flathead hand-tightening bolts.

[0022] During construction, the device of this invention is installed on the side wall of the foundation pit above the capping beam 1 near the staircase leading down to the foundation cage. The upper plate 3 of the three-fold steel plate is fixed to the upper surface of the foundation pit. The bends of the upper plate 3 and the vertical plate 2 are engaged at the upper edge of the foundation pit, and the vertical plate 2 is tightly attached to the inner side wall of the foundation pit. A safety box 8 is placed between the two vertical plates 6 of the lower plate 4, and a safety belt is placed inside the safety box 8. The height of the vertical plate 2 is selected according to the distance between the capping beam 1 and the upper surface of the foundation pit, so that the safety box 8 can be reached by the workers standing on the capping beam 1. Preferably, the distance between the safety box 8 and the capping beam 1 is less than 1.5m. Then, the adjusting bolts 9 are turned so that the adjusting bolts 9 on both sides are tightly pressed against the outer wall of the safety box 8, and the safety box 8 is tightly clamped by the adjusting bolts 9 on both sides. Then, L-shaped narrow plates 10 are fixed to both sides of the three-fold steel plate. The L-shaped narrow plates 10 are fixed to the ground above the foundation pit using bolts 5. The L-shaped narrow plates 10 are also fixed to the upper plate 3 using bolts 5. Then, the tightening bolts 12 are hand-tightened to make the tightening bolts 12 press firmly against the vertical plate 2, making the vertical plate 2 more stable. In this way, before workers enter the foundation pit, they can open the safety box 8 on the capping beam 1 of the stairs leading down into the foundation pit to take out safety belts and enter the foundation pit to work.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can still be made to the technical solutions described in the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A foundation pit safety box, characterized in that: The structure includes a three-fold steel plate, which includes a vertical plate (2). The upper edge of the vertical plate (2) is vertically connected to the upper plate (3) outward, and the lower edge of the vertical plate (2) is vertically connected to the lower plate (4) inward. The upper plate (3) is provided with several threaded holes. The upper plate (3) is fixed to the ground above the pit by bolts (5) passing through the threaded holes. Two vertical plates (6) are symmetrically welded on the lower plate (4). The vertical plates (6) are perpendicular to the vertical plate (2) and the lower plate (4). The vertical plates (6) are provided with several adjusting threaded holes (7) from top to bottom. A safety box (8) is placed on the lower plate (4) between the two vertical plates (6). A safety belt is placed inside the safety box (8). The adjusting bolts (9) pass through the adjusting threaded holes (7) and abut against the outer wall of the safety box (8). The safety box (8) is clamped by the adjusting bolts (9) on both sides of the vertical plates (6).

2. The foundation pit safety box according to claim 1, characterized in that: The upper plate (3) has L-shaped narrow plates (10) fixed on both sides by bolts (5). The upper part of the L-shaped narrow plate (10) extends outward from the upper plate (3). The part of the L-shaped narrow plate (10) extending outward from the upper plate (3) is fixed on the ground above the pit by bolts (5). The lower part of the L-shaped narrow plate (10) is parallel to the vertical plate (2). Several clamping threaded holes (11) are provided on the lower part of the L-shaped narrow plate (10). The clamping bolts (12) pass vertically through the clamping threaded holes (11) and abut against the vertical plate (2).

3. The foundation pit safety box according to claim 2, characterized in that: The distance between the lower part of the L-shaped narrow plate (10) and the vertical plate (2) is 1-3cm.

4. The foundation pit safety box according to claim 2, characterized in that: The clamping bolt (12) is a slotted hand-tightening bolt.

5. The foundation pit safety box according to claim 1, characterized in that: The height of the upright plate (6) is 20-30cm.

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