Foundation pit protection device

Abstract

The utility model belongs to the field of foundation pit protection, and particularly relates to a foundation pit protection device. A guardrail is hinged between the two supporting rods, a bottom box with a forward opening is fixed to the bottom of each supporting rod, a storage box capable of entering and exiting from the box opening is independently arranged in each bottom box in a penetrating mode, an inner rod is horizontally fixed to the inner rear side wall of each bottom box, an outer sleeve is independently arranged on each inner rod in a sleeving mode, and each outer sleeve is fixed to the corresponding storage box. A blocking assembly is arranged between the inner rod and the outer sleeve. Local materials are used according to the environment of a construction site, water, sand, soil, stones and other objects can be added into the storage box to serve as counter weights, and workers do not need to carry specific counter weights. The storage box is pulled out of the bottom box, the storage box is lifted upwards, the storage box swings by an angle, the counter weight is poured out of the box opening of the storage box at a time, then the storage box is pushed into the bottom box again, and therefore a worker can pour the counter weight in the storage box more conveniently and rapidly, and the working efficiency is improved.

Description

Technical Field

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

[0002] An excavation pit is a temporary pit excavated during building construction for the construction of foundations or underground structures. It carries a risk of collapse and requires graded protection based on geological conditions and the surrounding environment. Its construction involves complex geological and hydrological conditions and has potential impacts on adjacent buildings and pipelines, necessitating specific safety measures. Excavation pit protection netting is a protective facility installed at the edge of the excavation pit. Its core function is to prevent people and objects from falling and to isolate the construction area, reducing the hazards of collapses or falling objects. Typical designs include red and white / yellow and black warning colors and are equipped with a detachable base. This facility is widely used in building, pipeline, and road projects, serving as a fundamental safety barrier on construction sites.

[0003] However, the bases of existing foundation pit protection nets mostly use solid counterweights or water tank counterweights. Solid bases are heavy and therefore inconvenient to move. While water tank bases are easy to move after the counterweight is emptied, they can only hold water for counterweight, so a sufficient water source must be carried at all times during installation. In addition, to prevent water from leaking out of the water tank base, the water inlet on the water tank base is usually small, making it slow and inconvenient to empty the water tank base during relocation. Utility Model Content

[0004] The purpose of this utility model is to provide a foundation pit protection device that can load various types of counterweights and is more convenient and quick to tilt.

[0005] The aforementioned pit protection device includes two vertically arranged support rods, with a guardrail hinged between the two support rods. Each support rod has a bottom box with an opening facing forward fixed to its bottom. A storage box that can enter and exit through the box opening is independently installed inside the bottom box. An inner rod is horizontally fixed on the inner rear side wall of the bottom box. An outer sleeve is independently fitted on the inner rod and fixed to the storage box. A blocking component is provided between the inner rod and the outer sleeve to limit the distance the storage box extends out of the bottom box opening.

[0006] Furthermore, the blocking assembly includes a slider, which is detachably fixed to the outer side wall of the inner rod. The inner side wall of the outer sleeve is provided with a groove for sliding the slider, and the inner side wall of the outer sleeve is provided with an arc-shaped groove, which communicates with the end of the groove facing into the bottom box.

[0007] Furthermore, a handle is fixed to the side wall of the storage box facing the outside of the bottom box opening.

[0008] Furthermore, the inner wall of the storage box near the inner rod is inclined.

[0009] Furthermore, a freely swinging baffle is fixed to the opening of the bottom box by screws. When the swinging end of the baffle swings to a vertical downward position, it is used to block the storage box.

[0010] Furthermore, all the bottom boxes have several anti-slip grooves.

[0011] Furthermore, warning strips are installed on the outer wall of all support rods.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Based on the environment of the construction site, local materials such as water, sand, soil, and stones can be added to the storage box as counterweights. There is no need for staff to carry specific counterweights. After the storage box is pushed into the bottom box, the box wall of the bottom box can cover the opening of the storage box to prevent the counterweight from leaking out.

[0014] 2. When it is necessary to dismantle or move the foundation pit protection device, pull the storage box out of the bottom box, lift the storage box upwards, and swing the storage box to pour the counterweight out from the opening of the storage box in one go. Then push the storage box back into the bottom box, so that the workers can more conveniently and quickly empty the counterweight in the storage box to improve work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged cross-sectional view of section AA in the middle;

[0017] Figure 3 for Figure 2 Enlarged view of region a in the middle;

[0018] Figure 4 for Figure 2 Sectional view at point BB;

[0019] Figure 5 for Figure 4 Enlarged view of region b in the middle;

[0020] Figure 6 This is a perspective view of the present utility model;

[0021] Figure 7 This is an exploded view of the present invention;

[0022] Figure 8 for Figure 7 Enlarged view of region c in the middle;

[0023] The components in the diagram are named as follows: 1. Support rod; 2. Guardrail; 3. Base box; 4. Storage box; 5. Inner rod; 6. Outer sleeve; 7. Slider; 8. Slide groove; 9. Arc groove; 10. Baffle. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this 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 within the protection scope of the present invention. Example

[0025] The foundation pit protection device described in this embodiment, such as Figure 1 , Figure 6 and Figure 7 As shown, it includes two vertically arranged support rods 1, which are distributed at a distance from left to right. Warning stripes are provided on the outer wall of all support rods 1. The warning stripes are reflective bright strips, which can attract the attention of outsiders and make them clearly aware that this is a dangerous area.

[0026] A guardrail 2 is hinged between the two support rods 1, such as Figure 1 , Figure 6 and Figure 7 As shown, two support rods 1 are hinged to the left and right ends of the guardrail 2 via pivots, allowing the guardrail 2 to swing at the hinge point; the guardrail 2 is used to prevent people and objects from falling and to isolate the pit.

[0027] Each support rod 1 has a base box 3 with its opening facing forward fixed at its bottom, such as Figure 1 , Figure 2 and Figure 6 As shown, the bottom of the support rod 1 is fixed to the top of the bottom box 3. The bottom box 3 is a rectangular box with the opening facing forward.

[0028] All the bottom boxes 3 have several anti-slip grooves. The anti-slip grooves can increase the friction between the bottom of the bottom box 3 and the ground, making the bottom box 3 less likely to move.

[0029] Inside the base box 3, there is an independent storage box 4 that can be entered and exited through the opening. The storage box 4 is a rectangular box with the opening facing upwards. There is a gap between the storage box 4 and the inner wall of the base box 3, which allows the storage box 4 to move inside the base box 3 and enter and exit through the opening of the base box 3. When the storage box 4 is pulled out of the base box 3, the staff can add water, sand, soil, stones and other items as counterweights to the storage box 4. These items are common items on the construction site and can be obtained locally, so the staff do not need to carry extra counterweights. In addition, the opening of the storage box 4 is large, which makes it easier to add or pour counterweights into the storage box 4, making it easier for the staff to move it.

[0030] The inner wall of storage box 4 near the inner rod 5 is inclined, such as... Figure 7 As shown, when the storage box 4 swings upward to a vertical position, the inclined inner wall makes it easier to pour out the counterweights inside, thus preventing counterweights from remaining inside the storage box 4.

[0031] A handle is fixed to the side wall of storage box 4 facing the opening of bottom box 3, such as... Figure 2 and Figure 6 As shown, staff can hold the handle to push, pull, or swing the storage box 4, making the operation more convenient and labor-saving.

[0032] An inner rod 5 is horizontally fixed on the inner rear side wall of the base box 3, such as... Figure 1 , Figure 4 and Figure 7 As shown, the inner rod 5 is located inside the bottom box 3 on the side near the guardrail 2;

[0033] The inner rod 5 is independently fitted with an outer sleeve 6, such as Figure 2 As shown, there is a gap between the inner rod 5 and the inner wall of the outer sleeve 6, allowing the outer sleeve 6 to move along the inner rod 5; the outer sleeve 6 is a circular sleeve, and the inner rod 5 is a circular rod, allowing the outer sleeve 6 to rotate on the inner rod 5;

[0034] The outer sleeve 6 is fixed to the storage box 4 and to the side wall of the storage box 4 facing the guardrail 2. When the storage box 4 is pulled out from the opening of the bottom box 3, the storage box 4 will drive the outer sleeve 6 to move along the inner rod 5. After the storage box 4 is completely removed from the bottom box 3, the storage box 4 can be lifted up, so that the storage box 4 drives the outer sleeve 6 to rotate on the inner rod 5. The storage box 4 can swing around the inner rod 5 as the center. Swinging the storage box 4 upward to a vertical position makes it easier for the staff to pour out the counterweight inside the storage box 4. After the storage box 4 is restored to a horizontal position, with the cooperation of the outer sleeve 6 and the inner rod 5, the staff does not need to spend too much time aligning the storage box 4 with the opening of the bottom box 3. When the outer sleeve 6 moves on the inner rod 5, it can guide the storage box 4, allowing the staff to push the storage box 4 into the bottom box 3 more conveniently and quickly.

[0035] To elaborate further, such as Figure 2 , Figure 3 and Figure 5As shown, this embodiment preferably includes a slider 7, which is detachably fixed to the outer wall of the inner rod 5. The slider 7 is fixed to the end of the inner rod 5 near the box opening by screws, which facilitates the assembly and disassembly of the slider 7. A sliding groove 8 for sliding the slider 7 is provided on the inner wall of the outer sleeve 6. The sliding groove 8 is provided along the length of the outer sleeve 6. When the storage box 4 moves the outer sleeve 6 along the inner rod 5, the slider 7 will move along the sliding groove 8. When the storage box 4 is pulled out of the bottom box 3, the slider 7 will move to the rear end of the sliding groove 8. The sliding groove 8 limits the movement distance of the storage box 4, and the cooperation between the inner rod 5 and the outer sleeve 6 can guide the storage box 4, making it easy for the storage box 4 to enter and exit the bottom box 3. An arc-shaped groove 9 is provided on the inner wall of the outer sleeve 6, and the arc-shaped groove 9 communicates with the end of the sliding groove 8 facing the bottom box 3. Figure 2 and Figure 5 As shown, when the storage box 4 is completely removed from the bottom box 3 and swings upward, the slider 7 will move along the inside of the arc groove 9. The arc groove 9 will prevent the slider 7 from being moved, allowing the storage box 4 to swing upward normally. This solution constitutes a blocking component to limit the distance of the storage box 4 from the opening of the bottom box 3. Of course, the blocking component can also be a positioning pin. The inner rod 5 has a mounting hole for the positioning pin. A spring is installed in the mounting hole and is located between the positioning pin and the bottom of the hole. The outer sleeve 6 has a through groove along the circumferential direction. When the storage box 4 is pulled out of the bottom box 3, one end of the positioning pin will be pushed into the through groove by the spring. When the storage box 4 swings, the positioning pin will move along the through groove. When it is necessary to push the storage box 4 into the bottom box 3, the positioning pin can be pushed into the mounting hole so that the entire positioning pin is inserted into the mounting hole, thereby releasing the obstruction of the outer sleeve 6.

[0036] A freely swinging baffle 10 is fixed to the opening of the bottom box 3 by screws. When the baffle 10 swings to a vertical position, it blocks the storage box 4. Figure 2 , Figure 6 and Figure 8 As shown, the baffle 10 is fixed to the end face of the opening end of the bottom box 3 by screws. The friction intensity between the baffle 10 and the bottom box 3 can be adjusted by the screws. When the baffle 10 swings vertically downward, the swing end of the baffle 10 can block the storage box 4 and prevent the storage box 4 from falling out of the bottom box 3. When the storage box 4 needs to be pulled out of the bottom box 3, the baffle 10 swings upward to contact the blockage of the storage box 4. The friction can also position the baffle 10 after the swing angle.

[0037] In practical use, the foundation pit protection device is placed on the ground around the foundation pit, with the bottoms of the two base boxes 3 flush with the ground. Then, the storage box 4 is pulled out from the opening of the base box 3. Depending on the construction site environment, water, sand, soil, stones, etc., are collected as counterweights and added to the storage box 4. Afterward, the storage box 4 is pushed back into the base box 3, with the base box 3 covering the counterweights inside the storage box 4 to prevent leakage. The swing baffle 10 blocks and locks the storage box 4, completing the setup. This foundation pit protection device can adapt to different construction environments. Using locally sourced materials as counterweights eliminates the need for workers to carry specific counterweights. When disassembling or moving the pit protection device, the storage box 4 is pulled out of the bottom box 3, and the storage box 4 is lifted upwards, causing it to swing at an angle. This allows the counterweight to be poured out of the storage box 4 at once. The storage box 4 is then returned to a horizontal position and pushed back into the bottom box 3. The swing baffle 10 blocks and locks the storage box 4, making it easier and faster for workers to empty the counterweight from the storage box 4 when disassembling or moving the pit protection device, thus improving work efficiency.

Claims

1. A foundation pit protection device, comprising two vertically arranged support rods (1), a guardrail (2) being hingedly connected between the two support rods (1), characterized in that: Each support rod (1) has a bottom box (3) with the opening facing forward fixed at its bottom. A storage box (4) that can enter and exit from the box opening is independently installed inside the bottom box (3). An inner rod (5) is horizontally fixed on the inner rear side wall of the bottom box (3). An outer sleeve (6) is independently fitted on the inner rod (5). The outer sleeve (6) is fixed on the storage box (4). A blocking component is provided between the inner rod (5) and the outer sleeve (6) to limit the distance of the storage box (4) from the box opening of the bottom box (3).

2. The excavation shield of claim 1, wherein: The blocking assembly includes a slider (7), which is detachably fixed on the outer side wall of the inner rod (5). The inner side wall of the outer sleeve (6) is provided with a sliding groove (8) for sliding the slider (7). The inner side wall of the outer sleeve (6) is provided with an arc groove (9), which communicates with one end of the arc groove (9) and the sliding groove (8) facing into the bottom box (3).

3. The excavation shield of claim 1, wherein: The storage box (4) has a handle fixed on the side wall facing the opening of the bottom box (3).

4. A foundation pit protection device according to claim 3, wherein: The inner wall of the storage box (4) near the inner rod (5) is inclined.

5. The excavation shield of claim 1, wherein: The bottom box (3) has a freely swinging baffle (10) fixed at the opening by screws. When the swing end of the baffle (10) swings to vertical downward, it is used to block the storage box (4).

6. The excavation shield of claim 1, wherein: All the bottom boxes (3) have several anti-slip grooves on the bottom.

7. The excavation shield of claim 1, wherein: Warning strips are provided on the outer wall of all support rods (1).

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