A telescopic safety fence for a drop-off

Abstract

The utility model discloses a telescopic safety guardrail for edge opening relates to construction protection technical field, solves the problem that the guardrail structure of prior art can not improve the adaptive adjustment of scheme height. The utility model discloses a stand column unit and guardrail screen, the stand column unit includes the base, is equipped with retractable stand column on the base and is fixed, and the fixed end lateral wall and retractable end lateral wall of retractable stand column all are fixedly arranged with the connecting seat, the guardrail screen includes a plurality of parallelly arranged crossbeam, and the both ends of crossbeam are respectively with the corresponding connecting seat of adjacent stand column unit can detachable connection, and the crossbeam is connected through the folding fence frame. Through setting up the stand column unit with retractable stand column, cooperate the design of folding fence frame, make the height of guardrail can be adjusted flexibly, and perfect adaptation different size's edge opening, solved the poor applicability of traditional fixed size guardrail. Through setting up crossbeam, can bear folding fence frame, improve the bearing and protection intensity.

Description

Technical Field

[0001] This utility model relates to the field of construction protection technology, and in particular to a telescopic safety guardrail for use at openings near edges. Background Technology

[0002] With the increasing number of high-rise and super high-rise buildings in cities, the economic, human, and technological investment required for safety protection during construction, particularly regarding "three safety measures, four openings, and five edges," has significantly increased. During construction, all open edges in work areas require safety protection to prevent workers from falling from heights, thus avoiding worker injuries and unnecessary losses. Traditional construction safety railings, constructed from steel pipes and various fasteners, are crudely made, lack stability, and fail to meet increasingly stringent safety requirements. Furthermore, the large quantity of steel pipes and fasteners used results in high costs, occupies space, and hinders access to work surfaces. During installation, protruding steel pipes obstruct passage and increase the risk of collisions and injuries. To improve installation efficiency and meet standardized protection requirements, prefabricated edge protection railings are gradually being developed and used.

[0003] Chinese invention patent CN117188327A discloses a prefabricated edge guardrail structure suitable for installation on the embedded reinforcement bars of beams and slabs on a construction bridge deck. The structure includes: a protective net, a base, connecting components, and columns. The base has a plug-in cylinder in the middle, with support beams extending outwards on both sides of the plug-in cylinder. Reinforcing steel fasteners are installed inside the support beams, and these fasteners have a hook structure. The base is suitable for fixing to the embedded reinforcement bars of the beams and slabs using the reinforcing steel fasteners. The columns are plugged and fixed into the plug-in cylinder of the base. Installation beams extend outwards from the side walls of the columns. The protective net has a frame structure with a grid mesh structure inside. Multiple protective nets are provided, spaced apart along both sides of the construction bridge deck. Connecting components are fixed to the edges of the protective nets and have installation recesses facing downwards, matching the installation beams. Columns can be used to support and fix two adjacent protective nets through the installation recesses, or to support and fix one protective net at the end of the construction bridge deck.

[0004] The proposed solution presents a prefabricated guardrail structure. However, the structure has a fixed size and cannot be adapted to different edge opening sizes and protection height requirements. This results in poor adaptability and makes it difficult to relocate or reuse the guardrail. Utility Model Content

[0005] To address the shortcomings in the aforementioned background technology, this utility model proposes a telescopic safety guardrail for near openings, which solves the problem that the existing guardrail structure cannot adaptively adjust the protection height.

[0006] The technical solution of this utility model is implemented as follows: a telescopic safety guardrail for near openings includes a post unit and a guardrail mesh panel. The post unit includes a base, on which a telescopic post is fixedly mounted. A connecting seat is fixedly mounted on both the fixed end sidewall and the telescopic end sidewall of the telescopic post. The guardrail mesh panel includes several parallel horizontal beams. The two ends of the horizontal beams are detachably connected to the corresponding connecting seats of adjacent post units. The horizontal beams are connected by a folding guardrail frame.

[0007] Preferably, the telescopic column includes a sleeve fixedly mounted on a base, and at least one inner cylinder section capable of sliding out axially is nested inside the sleeve. The inner cylinder is provided with a locking structure for locking the extension length. The locking structure includes a set bolt threaded onto the sleeve or the inner cylinder, the inner end of which engages with the outer wall of the inner cylinder.

[0008] Preferably, the connecting seats are arranged in pairs on the inner cylinder and the sleeve, the end of the crossbeam is provided with an opening groove, the connecting seat is provided at the opening groove, and the end of the crossbeam and the connecting seat are respectively provided with connecting holes, and a pin for locking the position of the crossbeam and the connecting seat is inserted in the connecting hole.

[0009] Preferably, the connecting seats are welded and fixed to the upper side wall of the inner cylinder and the middle side wall of the sleeve, respectively. The connecting seats are fixedly connected to the inner cylinder by welding, achieving a stable connection.

[0010] Preferably, a rotating ring is rotatably provided on the inner cylinder, and the connecting seat is welded and fixed to the rotating ring. The rotating ring provides a rotatable support base for the connecting seat, thereby facilitating the connection arrangement requirements at corners.

[0011] Preferably, the folding railing includes several X-shaped hinge frames, with two pairs of sliding grooves corresponding to two adjacent crossbeams, and the ends of the X-shaped hinge frames are slidably hinged to the corresponding sliding grooves.

[0012] Preferably, the base has a through hole for a connector to pass through. The connector is an expansion bolt, a pin, or an anchor bolt. The connector allows the base to be connected to the ground, meeting the requirements for protection and fixation.

[0013] Preferably, the base is a C-shaped base, and a push rod is threadedly connected to the C-shaped base. By setting the C-shaped base, a connection with the opening can be achieved, and the threaded push rod can lock the position with the opening.

[0014] The beneficial effects of this utility model are as follows: By setting up a column unit with telescopic uprights and combining it with a folding railing design, the height of the guardrail can be flexibly adjusted to perfectly adapt to openings of different sizes, solving the problem of poor applicability of traditional fixed-size guardrails. The addition of crossbeams provides support for the folding railing, improving load-bearing and protective strength, while also enabling folding and height adjustment to meet the protection needs of different height scenarios. In this embodiment, the guardrail's vertical dimensions and shape can be flexibly adjusted according to actual needs, it is easy to assemble and disassemble, and can be reused at different locations without additional modifications, reducing material waste and construction costs, aligning with the concept of green construction. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partially enlarged structural schematic diagram of the present invention; Figure 3 This is a structural diagram of the present invention when the base is a C-shaped base; Figure 4 This is a schematic diagram of the telescopic column of this utility model in a two-section configuration; In the diagram: 1: base, 2: telescopic column, 3: connecting seat, 4: crossbeam, 5: folding railing, 21: sleeve, 22: inner cylinder, 23: set bolt, 31: opening slot, 32: pin, 24: rotating ring, 51: X-type hinge frame, 52: slide groove, 11: connector, 12: top rod. Detailed Implementation

[0017] 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.

[0018] like Figure 1 , 2As shown in Embodiment 1, a telescopic safety guardrail for edge openings includes a post unit and a guardrail mesh panel. The post unit includes a base 1, on which a telescopic post 2 is fixedly mounted. Connecting seats 3 are fixedly mounted on both the fixed and telescopic side walls of the telescopic post 2. By using telescopic posts in conjunction with a folding guardrail design, the height of the guardrail can be flexibly adjusted, perfectly adapting to the protection needs of edge openings of different sizes, thus solving the problem of poor applicability of traditional fixed-size guardrails. The guardrail mesh panel includes several parallel horizontal beams 4. The horizontal beams 4 can support the folding guardrail, improving load-bearing and protective strength. Both ends of the horizontal beams 4 are detachably connected to the corresponding connecting seats 3 of adjacent post units. The horizontal beams 4 are connected by folding guardrails 5, enabling folding and height adjustment to meet the protection needs of different height scenarios.

[0019] In practical use, during construction, workers first select the number of post units and railing mesh panels based on the size and shape of the opening. The base 1 of the post unit is then fixed at a fixed width position. Next, both ends of the crossbeam are connected to the connecting seats 3 on the telescopic post. Finally, the height of the telescopic post 2 is adjusted, thereby synchronously adjusting the folding degree of the folding railing under the connection, and thus adjusting the vertical protection height of the entire railing mesh panel to match the required protection height of the opening. In this embodiment, the guardrail's vertical dimensions and shape can be flexibly adjusted according to actual needs. It is easy to assemble and disassemble, and can be reused at different locations without additional modifications, reducing material waste and construction costs, aligning with the concept of green construction.

[0020] Example 2, as Figure 1 , 4 As shown, based on Embodiment 1, the telescopic column 2 includes a sleeve 21 fixedly mounted on the base 1. At least one inner cylinder 22, capable of sliding out axially, is nested within the sleeve 21. The inner cylinder 22 has a locking structure for locking the extension length. In this embodiment, depending on the protection requirements, the number of inner cylinders can be selected as one or two sections to meet the needs of different protection scenarios, such as... Figure 1 The diagram shows a configuration with two inner cylinder sections. Figure 4 To design a structural form with an inner cylinder section.

[0021] Specifically, in this embodiment, the locking structure includes a set bolt 23 threaded onto the sleeve 21 or the inner cylinder 22, with the inner end of the set bolt 23 engaging with the outer wall of the inner cylinder 22. When adjusting the height of the telescopic post, first loosen the set bolt 23, pull the inner cylinder 22 outward to the target height, and then lock it with the set bolt. This solves the cumbersome problem of traditional guardrails requiring cutting and welding adjustments in scenarios requiring different heights, thus improving installation efficiency.

[0022] In addition, connecting seats 3 are arranged in pairs on the inner cylinder 22 and the sleeve 21. The end of the crossbeam 4 is provided with an opening groove 31, and the connecting seat 3 is located at the opening groove 31. Corresponding connecting holes are opened on the end of the crossbeam 4 and the connecting seat 3. A pin 32 for locking the position of the crossbeam 4 and the connecting seat 3 passes through the connecting hole. Specifically, in this embodiment, one of the connecting holes at both ends of the crossbeam is a round hole, and the other is an elongated hole, which is set along the length of the crossbeam. Thus, by adjusting the length and cooperating with the pin, the connection position can be finely adjusted to adapt to the installation error in the spacing direction of different column units during installation.

[0023] As a further specific implementation, the connector 3 provides two installation methods: direct welding or welding through the rotating ring 24, to adapt to different angle installation and connection requirements.

[0024] As a first alternative, the connecting seat 3 is welded and fixed to the upper side wall of the inner cylinder 22 and the middle side wall of the sleeve 21, respectively. The connecting seat is fixedly connected to the inner cylinder by welding, achieving a stable connection.

[0025] As an alternative, a rotating ring 24 is rotatably mounted on the inner cylinder 22, and the connecting seat 3 is welded and fixed to the rotating ring 24. In this embodiment, each pair of connecting seats is connected to two rotating rings respectively, and the two rotating rings are arranged side by side along the axial direction. The rotating rings provide a rotatable support base for the connecting seats, thereby facilitating the connection arrangement requirements of the column units at the corner.

[0026] In Example 3, based on Example 2, the folding railing 5 includes several X-shaped hinge frames 51. Two pairs of sliding grooves 52 are correspondingly provided on two adjacent crossbeams 4. The sliding grooves 52 are opened along the length direction of the crossbeams, and the ends of the X-shaped hinge frames 51 are slidably hinged to the corresponding sliding grooves 52. When adjusting the height of the telescopic posts, the folding railing, connected to the crossbeams and connecting seats, unfolds or folds with the height adjustment of the telescopic posts. During unfolding and folding, the hinge angle of the X-shaped hinge frames and the hinge angle between the X-shaped hinge frames and the crossbeams adaptably change. Simultaneously, the ends of the X-shaped hinge frames can adaptably adjust along the length direction of the crossbeams within the sliding grooves, thereby achieving adjustment of the protective height. In this example, two pairs of sliding grooves are provided on the crossbeam located in the middle position, and one pair of sliding grooves are provided on the crossbeams located at the top and bottom to meet the connection requirements of the X-shaped hinge frames.

[0027] In addition, to achieve connection with different ground or floor slabs, two optional solutions are provided in this embodiment.

[0028] As a first option, the base 1 has a through hole for a connector 11 to pass through. The connector allows the base to be connected to the ground, meeting the requirements for protection and fixation. In this embodiment, the connector 11 is an expansion bolt, pin, or anchor bolt, which connects to the opening in the ground at its lower end to fix the base.

[0029] As a second option, such as Figure 3 As shown, the base is a C-shaped base, and a top rod 12 is threadedly connected to the C-shaped base. By setting the C-shaped base, it is possible to connect with the floor slab at the opening, and the threaded top rod can lock the position of the base with the opening. In actual use, first, the C-shaped base is secured to the opening of the floor slab, and then the top rod is rotated so that the end of the top rod abuts against the wall, thereby locking the position of the base.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A retractable safety guardrail for openings near edges, characterized in that: The system includes a column unit and a railing mesh. The column unit includes a base (1), on which a telescopic column (2) is fixed. A connecting seat (3) is fixedly provided on both the fixed end side wall and the telescopic end side wall of the telescopic column (2). The railing mesh includes several parallel horizontal beams (4). The two ends of the horizontal beams (4) are detachably connected to the corresponding connecting seats (3) of the adjacent column units. The horizontal beams (4) are connected to each other by a folding railing (5).

2. The telescopic safety guardrail for openings near edges as described in claim 1, characterized in that: The telescopic column (2) includes a sleeve (21) fixedly mounted on the base (1). The sleeve (21) is fitted with at least one inner cylinder (22) that can slide out along the axial direction. The inner cylinder (22) is provided with a locking structure for locking the extension length.

3. The telescopic safety guardrail for openings near edges as described in claim 2, characterized in that: The locking structure includes a set bolt (23) threaded onto the sleeve (21) or the inner cylinder (22), with the inner end of the set bolt (23) engaging with the outer wall of the inner cylinder (22).

4. The telescopic safety guardrail for openings near edges as described in claim 2 or 3, characterized in that: The connecting seats (3) are provided in pairs on the inner cylinder (22) and the sleeve (21). The end of the crossbeam (4) is provided with an opening groove (31). The connecting seats (3) are located at the opening groove (31). The end of the crossbeam (4) and the connecting seats (3) are respectively provided with connecting holes. A pin (32) for locking the position of the crossbeam (4) and the connecting seats (3) is inserted in the connecting holes.

5. The telescopic safety guardrail for openings near edges as described in claim 4, characterized in that: The connecting seat (3) is welded and fixed to the upper side wall of the inner cylinder (22) and the middle side wall of the sleeve (21), respectively.

6. The telescopic safety guardrail for openings near edges as described in claim 4, characterized in that: The inner cylinder (22) is provided with a rotating ring (24), and the connecting seat (3) is welded and fixed on the rotating ring (24).

7. The telescopic safety guardrail for openings near edges according to any one of claims 1 to 3, 5, and 6, characterized in that: The folding railing (5) includes several X-shaped hinge frames (51), and two pairs of sliding grooves (52) are provided on two adjacent crossbeams (4). The ends of the X-shaped hinge frames (51) are slidably hinged to the corresponding sliding grooves (52).

8. The telescopic safety guardrail for openings near edges as described in claim 7, characterized in that: The base (1) has a through hole for inserting a connector (11).

9. The telescopic safety guardrail for openings near edges as described in claim 8, characterized in that: The connector (11) is an expansion bolt, a pin, or an anchor bolt.

10. The telescopic safety guardrail for openings near edges as described in claim 7, characterized in that: The base is a C-shaped base, and a top rod (12) is threaded onto the C-shaped base.

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