Protective fence for roadbed construction

Abstract

The utility model provides a protective fence for roadbed construction, which solves the problems that time and labor are wasted and the construction efficiency is influenced in the process that the conventional protective fence needs to be integrally dismantled for multiple times and then reinstalled and fixed along with gradual filling and rising of a roadbed due to structure solidification. The screws are embedded in the gravel layer, the protective fence is installed on the screws through the connecting corner connectors and the connecting pieces, and the screws are matched with the double nuts (the first adjusting nut and the second adjusting nut), so that the vertical position of the connecting pieces can be directly adjusted, the protective fence is synchronously lifted along with lifting of the filling layer, overall disassembly is not needed, and the construction efficiency is improved. And through non-destructive height adjustment, the bottom of the fence is always higher than a filling layer, the pouring stage can be spanned without dismantling, and subgrade protection interruption is avoided.

Description

Technical Field

[0001] This utility model relates to the field of roadbed construction technology, and in particular to a protective fence for roadbed construction. Background Technology

[0002] A roadbed is the foundation of a track or road surface, and is an earthwork structure formed through excavation or filling. The main function of a roadbed is to provide the necessary conditions for the laying of tracks or roads and the operation of trains or vehicles, and to bear the static and dynamic loads of tracks, locomotives, rolling stock, roads, and traffic loads. At the same time, it transfers and diffuses the loads deep into the foundation to ensure the overall stability of the engineering structure.

[0003] During roadbed construction, the exposed work surface and frequent movement of machinery can easily lead to safety hazards if outsiders accidentally enter. Therefore, protective fences are widely used as temporary isolation facilities on construction sites. They achieve standardized management of the work area through physical barriers, reduce the risk of external interference, and play an irreplaceable role in construction safety protection.

[0004] During the dynamic construction process of layered filling of the roadbed (such as the gradual hardening of concrete subbase → base course → surface course), the roadbed elevation continues to rise as the project progresses. However, most traditional protective fences adopt a fixed buried structure. As the roadbed is gradually filled and raised, the protective fences need to be dismantled and reinstalled multiple times. This process is time-consuming and labor-intensive, and it also affects the construction efficiency. Utility Model Content

[0005] To address the problem in the background art that traditional protective fences, due to their solidified structure, require multiple complete dismantling and reinstallation as the roadbed is gradually filled and raised, a process that is time-consuming, labor-intensive, and impacts construction efficiency, this utility model proposes a protective fence for roadbed construction.

[0006] The technical solution of this utility model is: a protective fence for roadbed construction, comprising multiple protective fences, which are arranged at intervals along the left and right directions;

[0007] The connecting corner bracket is fixedly installed at the corner of the joint end of two adjacent protective fences. The connecting corner bracket has a second through hole that is open at both the top and bottom.

[0008] The connector extends in the left and right direction and is located between two adjacent connecting corner brackets. Both ends of the connector have a first through hole that is vertically open and corresponds vertically to the second through hole. The first through hole on the connector and the second through hole on the connecting corner bracket are connected by fasteners. The middle part of the connector has a third through hole that is vertically open.

[0009] The screw rod passes through the third through hole in the middle of the lower connector. The bottom end of the screw rod is inserted into the sand and gravel layer of the roadbed. The screw rod is threaded with a first adjusting nut and a second adjusting nut. The connector is located between the first adjusting nut and the second adjusting nut to clamp and fix the connector.

[0010] Preferably, the first through hole of the connector is an elongated hole extending in the left-right direction.

[0011] Preferably, the bottom end of the screw is fixedly provided with a ground anchor, which includes an anchor rod extending downward in the same direction as the screw and a helical blade fixedly provided at the bottom end of the anchor rod.

[0012] Preferably, the bottom end of the second adjusting nut is fixedly provided with a downwardly extending sleeve, which is sleeved on the screw and the bottom end of the sleeve abuts against the roadbed surface.

[0013] Preferably, a horizontally positioned pad is provided between the sleeve and the roadbed, and the pad is fixed at the bottom end of the sleeve.

[0014] Preferably, a baffle is fixedly provided on the bottom front side of the protective fence.

[0015] Preferably, the front side of the baffle is coated with a reflective coating.

[0016] Advantages of this utility model: This utility model pre-embeds screw rods in the sand and gravel layer and installs the protective fence on the screw rods through connecting brackets and connectors. Through the cooperation of the screw rods and double nuts (first adjusting nut and second adjusting nut), the vertical position of the connectors can be directly adjusted, so that the protective fence rises synchronously with the filling layer without the need for overall disassembly, thus improving construction efficiency. Through non-destructive height adjustment, the bottom of the fence is always higher than the filling layer, and it can cross the pouring stage without dismantling, thus avoiding interruption of roadbed protection. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure below the adjacent protective fences of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure above the adjacent protective fences of this utility model.

[0021] In the diagram: 1. Protective fence; 101. Baffle; 2. Connecting bracket; 201. Second through hole; 3. Connector; 301. First through hole; 302. Third through hole; 4. Fastener; 5. Screw; 501. First adjusting nut; 502. Second adjusting nut; 503. Sleeve; 6. Ground anchor; 601. Anchor rod; 602. Spiral blade; 7. Pad. Detailed Implementation

[0022] 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.

[0023] Example 1: A protective fence for roadbed construction, such as Figure 1-3 As shown, the system includes multiple protective fences 1 arranged at intervals along the left and right directions. A baffle 101 is fixedly installed on the bottom front side of each protective fence 1. The baffle 101 is used to prevent splashes generated during construction from passing through the protective fence 1. The front side of the baffle 101 is coated with a reflective coating, which can enhance visibility at night or in low light conditions and reduce the risk of accidental collisions with vehicles. An L-shaped connecting bracket 2 is fixedly installed at the corner of the joint end of two adjacent protective fences 1. A connector 3 is provided between two adjacent connecting brackets 2. The connector 3 is a metal plate extending along the left and right directions. Both ends of the connector 3 have a first through hole 301 that is open vertically. The connecting bracket 2 has a second through hole 201 that is open vertically and corresponds vertically to the first through hole 301. The first through hole 301 on the connector 3 and the second through hole 201 on the connecting bracket 2 are connected by a fastener 4. The fastener 4 is a bolt equipped with a lock nut, so that the two adjacent protective fences 1 are connected and fixed to the connector 3 through the connecting bracket 2.

[0024] like Figure 2As shown, the connector 3 has a third through hole 302 in the middle, which is open at both the top and bottom. A screw 5 that can slide up and down and extends in the vertical direction is inserted into the third through hole 302 on the lower connector 3. The bottom end of the screw 5 is inserted into the gravel layer of the roadbed. A first adjusting nut 501 and a second adjusting nut 502 are threaded on the screw 5 respectively. The first adjusting nut 501 is located above the second adjusting nut 502. The connector 3 is located between the first adjusting nut 501 and the second adjusting nut 502. The first adjusting nut 501 and the second adjusting nut 502 together clamp and fix the connector 3 to the screw 5 to fix the protective fence 1. Through the cooperation of the screw 5 and the double nuts (the first adjusting nut 501 and the second adjusting nut 502), the vertical position of the connector 3 can be directly adjusted, so that the protective fence 1 rises synchronously with the filling layer without the need for overall disassembly, thus improving construction efficiency.

[0025] like Figure 3 As shown, the first through hole 301 is an elongated hole extending in the left and right direction, which allows the connector 3 to be adjusted in a certain width in the left and right direction through the second through hole 201, so that the protective fence 1 can be adjusted in a small range in the left and right direction to accommodate the positional installation deviation of the screw 5.

[0026] Compared to traditional fences that need to be removed before the fill layer is poured to prevent the bottom of the fence from being embedded in the concrete, which would result in a lack of effective protection during the roadbed construction, this protective fence 1 can be raised during the fill layer pouring process by using screws 5 and double nuts (first adjusting nut 501 and second adjusting nut 502). Through non-destructive height adjustment, the bottom of the fence is always higher than the fill layer, allowing it to skip the pouring stage without removal and avoiding interruption of roadbed protection. Before the surface layer is laid, the protective fence 1 is not needed. The screws 5 can be cut off, and the top of the screws 5 can be buried inside the road surface layer to avoid affecting road use. At the same time, cutting off the screws 5 allows for quick recovery and dismantling of the protective fence 1, improving construction efficiency.

[0027] like Figure 2 As shown, a ground anchor 6 is fixedly provided at the bottom end of the screw 5. The ground anchor 6 includes an anchor rod 601 extending downward in the same direction as the screw 5 and a spiral blade 602 fixed at the bottom end of the anchor rod 601. This can increase the anchoring length and pull-out strength of the screw 5, and at the same time make it easy to insert the bottom end of the screw 5 into the sand and gravel layer.

[0028] like Figure 2As shown, the bottom end of the second adjusting nut 502 is fixedly provided with a downwardly extending sleeve 503. The sleeve 503 is sleeved on the screw 5, and the bottom end of the sleeve 503 abuts against the roadbed surface, which can support the second adjusting nut 502, reduce the load on the second adjusting nut 502 from the weight of the protective fence 1, and at the same time make the connecting piece 3 and the protective fence 1 a certain height from the roadbed surface, so that the protective fence 1 can be used on uneven roadbeds.

[0029] like Figure 2 As shown, a horizontally arranged pad 7 is provided between the sleeve 503 and the roadbed. The pad 7 is fixed at the bottom of the sleeve 503. The pad 7 is a circular steel plate structure. The pad 7 is attached to the surface of the roadbed. The pad 7 and the screw 5 are arranged perpendicularly to each other. The pad 7 can enhance the anti-twisting performance of the screw 5.

[0030] Working principle: Multiple screws 5 are screwed into the sand and gravel layer at predetermined intervals through the spiral blades 602 of the ground anchor 6. The connector 3 is sleeved on the screw 5 through the third through hole 302, and the connector 3 is fixed by the first adjusting nut 501 and the second adjusting nut 502. The adjacent protective fence 1 is connected to the connector 3 through the L-shaped connecting angle bracket 2. The left and right extension characteristics of the first through hole 301 as an elongated hole are used to compensate for the deviation of the pre-embedded position of the screw 5. The fastener 4 is used to pass through the first through hole 301 and the second through hole 201 and then lock it, so as to realize the installation and fixation of multiple protective fences 1.

[0031] Before the filling layer is constructed, loosen the first adjusting nut 501 and the second adjusting nut 502, slide the connecting piece 3 along the screw 5 to the target height, and then tighten the nut to raise the bottom of the fence and keep it above the filling layer; before the road surface layer is constructed, cut the top of the screw 5, disassemble the protective fence 1 and the connecting piece 3 to achieve rapid recycling.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A protective fence for roadbed construction, characterized in that: It includes multiple protective fences (1), which are arranged at intervals in the left and right directions; The connecting corner bracket (2) is fixedly installed at the corner of the docking end of two adjacent protective fences (1). The connecting corner bracket (2) has a second through hole (201) that is open from top to bottom. The connector (3) extends in the left and right direction and is located between two adjacent connecting corner brackets (2). Both ends of the connector (3) are provided with first through holes (301) that are open from top to bottom and correspond to the second through hole (201) from top to bottom. The first through hole (301) on the connector (3) and the second through hole (201) on the connecting corner bracket (2) are connected by fasteners (4). The middle part of the connector (3) is provided with a third through hole (302) that is open from top to bottom. The screw (5) is inserted into the third through hole (302) in the middle of the connector (3) located below. The bottom end of the screw (5) is inserted into the sand and gravel layer of the roadbed. The screw (5) is threaded with a first adjusting nut (501) and a second adjusting nut (502). The connector (3) is located between the first adjusting nut (501) and the second adjusting nut (502) to clamp and fix the connector (3).

2. The protective fence for roadbed construction according to claim 1, characterized in that: The first through hole (301) of the connector (3) is an elongated hole extending in the left-right direction.

3. The protective fence for roadbed construction according to claim 1, characterized in that: The bottom end of the screw (5) is fixedly provided with a ground anchor (6), which includes an anchor rod (601) extending downward in the same direction as the screw (5) and a spiral blade (602) fixedly provided at the bottom end of the anchor rod (601).

4. A protective fence for roadbed construction according to claim 1, characterized in that: The bottom end of the second adjusting nut (502) is fixed with a downwardly extending sleeve (503), which is sleeved on the screw (5) and the bottom end of the sleeve (503) abuts against the roadbed surface.

5. A protective fence for roadbed construction according to claim 4, characterized in that: A horizontal pad (7) is provided between the sleeve (503) and the roadbed, and the pad (7) is fixed at the bottom of the sleeve (503).

6. A protective fence for roadbed construction according to claim 1, characterized in that: A baffle (101) is fixedly installed on the bottom front side of the protective fence (1).

7. A protective fence for roadbed construction according to claim 6, characterized in that: The front side of the baffle (101) is coated with a reflective coating.

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