Foundation pit guardrail

Abstract

The utility model belongs to the field of building construction, and discloses a foundation pit guardrail which comprises a main body device used for protection and blocking and further comprises stand column devices symmetrically arranged at the two ends of the main body device and used for connecting and fixing, and reinforcing devices used for unfolding pitched roofs to form triangular supports to enhance stress are installed behind the stand column devices in a sliding and rotating mode. The reinforcing device is contained in the stand column device. The stand column device comprises a stand column frame, the stand column frame is in a rectangular frame shape with an opening in the back, two limiting sliding grooves are symmetrically formed in the two sides of the stand column frame, and positioning grooves are formed in the bottoms of the limiting sliding grooves in an upwards-inclined mode. The reinforcing device comprises an extension frame which is in a rectangular frame shape with an opening in the top face, a first rotating shaft is arranged at one end of the extension frame, and an inclined strut assembly is rotationally installed at the end, away from the first rotating shaft, of the extension frame. According to the foundation pit guardrail, the reinforcing devices can be completely contained in the stand columns, and space is saved during transportation; during unfolding, automatic locking can be achieved only by pulling and overturning, tools are not needed in operation, and time and labor are saved.

Description

Technical Field

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

[0002] Pit guardrails are important safety protection facilities used around construction site pits, primarily to prevent personnel, vehicles, or materials from accidentally falling into the pit and ensuring construction safety. They are typically made of steel, steel pipes, or other high-strength materials, featuring a stable structure and easy installation. During construction, pit guardrails not only isolate dangerous areas but also help regulate site order and reduce accidents. To ensure long-term effectiveness, pit guardrails must have good corrosion resistance; some products undergo hot-dip galvanizing or powder coating processes to enhance durability. Regular inspection and maintenance are also crucial for ensuring the safety performance of pit guardrails.

[0003] Comparing with Chinese Patent No. CN221236528U, a construction pit guardrail is disclosed, including a guardrail and uprights. The guardrail uses multiple pointed ends to prevent unauthorized personnel from climbing over it. Then, the guardrail is rotated 180 degrees upwards to make it vertical. The elastic force of a spring drives the insert rod to move inwards into the inner cavity of the guardrail to limit and fix it. At this time, the guardrail is located above the pointed ends to protect it and prevent the pointed ends from accidentally injuring others during transportation. The insert rod has two parts, one above the other, which can limit and fix the guardrail in the open and one in the retracted state respectively, improving the safety of the device.

[0004] However, the aforementioned patent requires the diagonal bracing rod to be placed separately during storage, which increases the waste of transportation space, makes it easy to lose, and is not convenient for quick assembly and disassembly. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of this utility model is to provide a foundation pit guardrail to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A foundation pit guardrail includes a main body for protection and obstruction, and symmetrically arranged column devices at both ends of the main body for connection and fixation. A reinforcing device for expanding an inclined top to form a triangular support and enhance load-bearing capacity is slidably mounted on the rear of each column device. The reinforcing device is housed inside the column device. Fixed anchors are installed on both the column device and the reinforcing device, forming a triangular fixation on the ground. Each column device includes a column frame, which is a rectangular frame with an opening at the rear. A base is provided at the bottom of the column frame. Two connecting components are evenly arranged at the front of the column frame. Two limiting grooves are symmetrically arranged on both sides of the column frame, and positioning grooves are provided at the bottom of the limiting grooves at an upward inclination. Each reinforcing device includes an extension frame, which is a rectangular frame with an opening at the top. A first rotating shaft is provided at one end of the extension frame, and the first rotating shaft is rotatably connected to the bottom of the column frame. A diagonal brace is rotatably mounted on the end of the extension frame away from the first rotating shaft, and the diagonal brace slides along the limiting groove at the end away from the extension frame.

[0008] Furthermore: the main device includes a guardrail frame, four connecting ears are evenly distributed on both sides of the guardrail frame, and a guardrail mesh is fixedly installed inside the guardrail frame.

[0009] Furthermore: a guardrail plate is riveted to the bottom of the guardrail mesh, and reflective stickers are affixed to the surface of the guardrail plate.

[0010] Furthermore: two first through holes are symmetrically arranged on the base, and a second through hole is provided on the end of the extension frame near the diagonal brace assembly.

[0011] Furthermore, the connecting assembly includes a horizontally arranged fixing plate, with two connecting studs symmetrically arranged at both ends of the fixing plate, and a locking nut installed on the connecting stud.

[0012] Furthermore, the base and the fixing plate are respectively welded to the column frame.

[0013] Furthermore: the diagonal brace assembly includes a diagonal brace rod, and two second rotating shafts are symmetrically arranged at both ends of the diagonal brace rod. The second rotating shaft at the bottom of the diagonal brace rod is rotatably connected to the extension frame.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] 1. The reinforcing device can be completely stored inside the column, saving space during transportation; when unfolded, it can be automatically locked by simply pulling and flipping (the diagonal brace inserts into the positioning slot), and no tools are required for operation, saving time and effort; it is especially suitable for occasions such as construction sites where guardrails need to be frequently installed / removed;

[0016] 2. The second pivot at the top of the diagonal brace moves along the preset slide groove to ensure accurate unfolding trajectory, and finally locks into the inclined positioning groove to achieve self-locking and prevent the support from loosening; all unfolding steps can be reversed, which is convenient for temporary disassembly or reuse.

[0017] 3. The rigid triangular support formed by the deployable reinforcement device (extension frame + diagonal brace) and the column device significantly improves the overall resistance to lateral impact, making it suitable for scenarios where the edge of the foundation pit is susceptible to external impact. The column base and the extension frame are fixed to the ground by anchors, forming a triangular fixing system of "ground-column-diagonal brace" to prevent the guardrail from overturning. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a foundation pit guardrail according to the present invention;

[0019] Figure 2 This is a schematic diagram of the main device of the foundation pit guardrail described in this utility model;

[0020] Figure 3 This is an axonometric view of the column device for a foundation pit guardrail as described in this utility model;

[0021] Figure 4 This is a rear axonometric view of the column device for a foundation pit guardrail as described in this utility model;

[0022] Figure 5 This is an axonometric view of the reinforcing device for a foundation pit guardrail as described in this utility model;

[0023] Figure 6 This is a rear axonometric view of the reinforcing device for a foundation pit guardrail described in this utility model.

[0024] In the attached diagram, the following are the reference numerals: 101, guardrail frame; 102, connecting ear; 103, guardrail mesh; 104, guardrail panel; 105, reflective sticker; 201, column frame; 202, base; 203, first through hole; 204, limiting slide groove; 205, positioning groove; 206, fixing plate; 207, connecting stud; 208, locking nut; 301, extension frame; 302, first rotating shaft; 303, diagonal brace; 304, second rotating shaft; 305, second through hole; 4, fixing anchor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-6 A foundation pit guardrail includes a main body device for protection and isolation, and a column device symmetrically arranged at both ends of the main body device for connection and fixation. A reinforcing device for unfolding the inclined top to form a triangular support to enhance the load-bearing capacity is slidably installed behind the column device. The reinforcing device is housed inside the column device. Fixing anchors 4 are respectively installed on the column device and the reinforcing device to form a triangular fixation on the ground.

[0027] In this embodiment: the main device includes a guardrail frame 101, four connecting ears 102 are evenly distributed on both sides of the guardrail frame 101, and a guardrail mesh 103 is fixedly installed inside the guardrail frame 101; a guardrail plate 104 is riveted to the bottom of the guardrail mesh 103, and a reflective sticker 105 is pasted on the surface of the guardrail plate 104; the guardrail frame 101 is fixedly connected to the column frame 201 through the connecting ears 102, the guardrail mesh 103 in the middle of the guardrail frame 101 ensures protection and isolation, the guardrail plate 104 at the bottom of the guardrail mesh 103 prevents rolling stones from entering the foundation pit, and the reflective sticker 105 increases the warning effect;

[0028] In this embodiment: the column device includes a column frame 201, which is a rectangular frame with an opening at the rear. A base 202 is provided at the bottom of the column frame 201. Two connecting components are evenly arranged at the front of the column frame 201. Two limiting grooves 204 are symmetrically arranged on both sides of the column frame 201. The bottom of the limiting grooves 204 is provided with a positioning groove 205 that is inclined upward. Two first through holes 203 are symmetrically arranged on the base 202. The connecting components include a horizontally arranged fixing plate 206. Two connecting studs 207 are symmetrically arranged at both ends of the fixing plate 206. Locking nuts 208 are installed on the connecting studs 207. The base 202 and the fixing plate 206 are welded to the column frame 201 respectively. The column is then connected to the base frame 201. The frame 201 is moved to the set position and the column frame 201 is fixed to the ground by passing the first through hole 203 on the base 202 with the fixing anchor 4. The limiting slide groove 204 is used to limit the movement direction of the second rotating shaft 304 at the top of the diagonal brace 303. The positioning groove 205 is used to fix and hold the second rotating shaft 304 at the top of the diagonal brace 303. The column frame 201 is connected to the guardrail frame 101 through the connecting stud 207 on the fixing plate 206. The connecting ears 102 on both sides of the guardrail frame 101 are inserted into the connecting stud 207 on the fixing plate 206 of the two column frames 201 respectively. Finally, the locking nut 208 on the connecting stud 207 is tightened to press the connecting ears 102 and fix the guardrail frame 101.

[0029] In this embodiment: the reinforcing device includes an extension frame 301, which is a rectangular frame with an open top surface. A first rotating shaft 302 is provided at one end of the extension frame 301, and the first rotating shaft 302 is rotatably connected to the bottom of the column frame 201. A diagonal brace assembly is rotatably mounted at the end of the extension frame 301 away from the first rotating shaft 302, and the end of the diagonal brace assembly away from the extension frame 301 slides along a limiting groove 204. A second through hole 305 is provided at the end of the extension frame 301 near the diagonal brace assembly. The diagonal brace assembly includes a diagonal brace rod 303, with two second rotating shafts 304 symmetrically arranged at both ends of the diagonal brace rod 303. The second pivot 304 at the bottom of the rod 303 is rotatably connected to the extension frame 301. The extension frame 301 is pulled out from behind the column frame 201 and unfolded around the first pivot 302. At the same time, the extension frame 301 pulls the diagonal brace 303 through the second pivot 304 and moves along the limiting groove 204 under the limitation of the second pivot 304 at the top. When the bottom surface of the extension frame 301 is close to the ground, the second pivot 304 at the top of the diagonal brace 303 is locked into the positioning groove 205 and fixed to form a triangular support. When storing, the reinforcing device can be stored in the column device by reversing the above steps.

[0030] Working principle: During installation, first move the column frame 201 to the set position, and fix the column frame 201 to the ground by passing the fixing anchor 4 through the first through hole 203 on the base 202. Then, pull out the extension frame 301 from the back of the column frame 201, and flip it open around the first rotating shaft 302. At the same time, the extension frame 301 pulls the diagonal brace 303 through the second rotating shaft 304. Under the limit of the second rotating shaft 304 at the top, it moves along the limiting slide groove 204. When the bottom surface of the extension frame 301 is close to the ground, the second rotating shaft 304 at the top of the diagonal brace 303 is locked into the positioning groove 205 and fixed, forming a triangular support. Then, use the fixing anchor 4 through the first through hole 203 on the extension frame 301 to fix it to the ground. The second through hole 305 fixes the outer frame 301 to the ground, forming a triangular fixation. When storing, simply reverse the above steps. Then, move the guardrail frame 101 between the two column frames 201, and insert the connecting ears 102 on both sides of the guardrail frame 101 into the connecting studs 207 on the fixing plates 206 of the two column frames 201 respectively. Finally, tighten the locking nuts 208 on the connecting studs 207 to press the connecting ears 102 and fix the guardrail frame 101. The guardrail mesh 103 in the middle of the guardrail frame 101 ensures protection and isolation. The guardrail plate 104 at the bottom of the guardrail mesh 103 prevents rolling stones from entering the pit, while the reflective sticker 105 increases the warning effect.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foundation pit guardrail, comprising a main body device for protection and obstruction, characterized in that: It also includes column devices symmetrically arranged at both ends of the main body for connection and fixation. A reinforcing device for unfolding the inclined top to form a triangular support to enhance the force is slidably installed behind the column device. The reinforcing device is housed inside the column device. Fixed anchors (4) are installed on the column device and the reinforcing device respectively to form a triangular fixation on the ground. The column device includes a column frame (201), which is a rectangular frame with an opening at the rear. A base (202) is provided at the bottom of the column frame (201). Two connecting components are evenly arranged at the front of the column frame (201). Two limiting grooves (204) are symmetrically arranged on both sides of the column frame (201). The bottom of the limiting groove (204) is provided with a positioning groove (205) that is inclined upward. The strengthening device includes an extension frame (301), which is a rectangular frame with an open top surface. A first rotating shaft (302) is provided at one end of the extension frame (301). The first rotating shaft (302) is rotatably connected to the bottom of the column frame (201). A diagonal brace assembly is rotatably installed at the end of the extension frame (301) away from the first rotating shaft (302). The diagonal brace assembly slides along the limiting groove (204) at the end away from the extension frame (301).

2. The foundation pit guardrail according to claim 1, characterized in that: The main device includes a guardrail frame (101), four connecting ears (102) are evenly distributed on both sides of the guardrail frame (101), and a guardrail mesh (103) is fixedly installed inside the guardrail frame (101).

3. A foundation pit guardrail according to claim 2, characterized in that: The bottom of the guardrail mesh (103) is riveted with a guardrail plate (104), and the surface of the guardrail plate (104) is covered with reflective stickers (105).

4. A foundation pit guardrail according to claim 1, characterized in that: The base (202) has two first through holes (203) symmetrically arranged, and the extension frame (301) has a second through hole (305) near the end of the diagonal brace assembly.

5. A foundation pit guardrail according to claim 1, characterized in that: The connecting assembly includes a horizontally arranged fixing plate (206), and two connecting studs (207) are symmetrically arranged at both ends of the fixing plate (206). Locking nuts (208) are installed on the connecting studs (207).

6. A foundation pit guardrail according to claim 5, characterized in that: The base (202) and the fixing plate (206) are respectively welded to the column frame (201).

7. A foundation pit guardrail according to claim 1, characterized in that: The diagonal bracing assembly includes a diagonal brace (303), and two second rotating shafts (304) are symmetrically arranged at both ends of the diagonal brace (303). The second rotating shaft (304) at the bottom of the diagonal brace (303) is rotatably connected to the extension frame (301).

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