Municipal construction protective fence

Abstract

The utility model discloses a municipal construction protective fence which comprises a fence net, a fixing device and a winding device, by arranging the winding device, a person pulls the fence net leftwards to enable a ratchet wheel to rotate clockwise, and a pawl cannot limit and fix the ratchet wheel, so that the fence net can be smoothly pulled out and hung on a fixing buckle; a fixing shaft is arranged, the fixing effect on the fence net can be achieved, the fence net is not prone to falling off, the right end of the fence net is wound around the outer side of the fixing shaft, and the situation that the fence net falls off due to excessive pulling when a person pulls the fence net is avoided; when the fence netting needs to be wound, a person pulls the pull rod outwards, so that the pawl and the ratchet wheel are disconnected, the ratchet wheel rotates anticlockwise, and the fixing shaft is driven to rotate to wind the fence netting.

Description

Technical Field

[0001] The utility model relates to the technical field of construction equipment, and specifically relates to a municipal construction guardrail. Background Art

[0002] During the municipal construction process, construction workers often set up guardrails around the construction area to prevent passers-by from straying into the construction area and causing injuries. The existing construction guardrails are simply designed as vertical rectangular plate-shaped guard nets. There is no connection between the guardrails, making them easy to move. Moreover, the height of the existing construction guardrails is limited, resulting in splashed sediment during the construction process crossing the guardrails and polluting the nearby road surface. Simply increasing the height of the guardrails makes them inconvenient to carry.

[0003] [[ID=il]]When optimizing the existing municipal construction guardrail equipment, most of them are reflected in the fixing effect of the guardrail by the device. For example, the Chinese invention patent application with the publication number CN202311596559.0 discloses a "Building Construction Guardrail". This invention patent application sets up a fixed connection device, several mutually spliced unit rods, hooks arranged on the unit rods, a pull rope tied to the hooks, and a winding component for winding and unwinding the pull rope. When the hook is thrown to the surrounding fixed objects and an out-of-control person or vehicle hits the guardrail and pushes it to move, the trigger component applies an action to the throwing component, so that the throwing component throws the hook to the surrounding preselected fixed objects. The hook hooks tightly to the fixed objects and the pull rope is quickly pulled out. Since the length of the pull rope is limited, when the pull rope cannot be pulled out any further, the pull rope is in a taut state and the guardrail cannot move any further, thereby being able to stop the out-of-control person or vehicle, and thus improving the protection effect of the guardrail.

[0004] Although the above method has certain advantages in terms of improvement, it still has certain drawbacks: If the guard net is not wound up, when a vehicle needs to pass, it can only be moved as a whole by personnel, increasing the workload of the personnel. Summary of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a municipal construction guardrail, which solves the problems raised above.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the utility model is realized by the following technical solutions: A municipal construction guardrail, comprising a guardrail net, a fixing device and a winding device, wherein the guardrail net is movable inside the winding device, and the fixing device is fixedly installed on both sides of the guardrail net; the fixing device includes a hook and a fixing buckle, the hook is fixedly installed at the left end of the guardrail net, and the fixing buckle is fixedly installed on the right side of the winding device.

[0009] Preferably, the winding device includes a fixed shaft, a clockwork spring and a rotation limiter, the rotation limiter is fixedly installed at the upper end of the fixed shaft, and the clockwork spring is connected to the fixed shaft.

[0010] Preferably, the rotation limiter includes a pull rod, a pawl, a tension spring, a ratchet wheel and an engaging block, the pull rod is connected to the pawl, one end of the tension spring is fixedly connected to the pawl, the ratchet wheel meshes with the pawl, and the engaging block is fixedly connected to the ratchet wheel.

[0011] Preferably, the right end of the guardrail net is connected to the fixed shaft.

[0012] Preferably, multiple groups of the hooks and the fixing buckles are provided.

[0013] Preferably, two clockwork springs are provided, and the clockwork springs are arranged at the upper and lower ends of the fixed shaft.

[0014] Preferably, the clockwork spring is made of steel and has excellent elasticity and strength.

[0015] Preferably, the tension spring is made of alloy steel and has the characteristics of high strength and good toughness.

[0016] (III) Beneficial effects

[0017] The utility model provides a municipal construction guardrail. It has the following beneficial effects: By setting a winding device, when a person pulls the guardrail net to the left, the ratchet wheel rotates clockwise, and the pawl cannot limit and fix it, so that the guardrail net can be smoothly pulled out and hung on the fixing buckle, which can fix the guardrail net and prevent it from falling easily. Moreover, the right end of the guardrail net is wound around the outside of the fixed shaft, and when a person pulls it, the guardrail net will not fall off due to over-pulling; when the guardrail net needs to be wound up, by pulling the pull rod outward by a person, the pawl is disengaged from the ratchet wheel, the ratchet wheel rotates counterclockwise, and drives the fixed shaft to rotate to wind up the guardrail net. Description of the drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the municipal construction guardrail of the utility model;

[0019] Figure 2 is a planar structural schematic diagram of the municipal construction guardrail of the utility model;

[0020] Figure 3 is a schematic plan view of the fixing device of the present utility model;

[0021] Figure 4 is a schematic plan view of the retracting device of the present utility model;

[0022] Figure 5 is a schematic top view of the rotation limiter of the present utility model.

[0023] In the figure: guardrail net - 1, fixing device - 2, retracting device - 3, hook - 21, fixing buckle - 22, fixing shaft - 31, hairspring - 32, rotation limiter - 33, pull rod - 331, ratchet pawl - 332, tension spring - 333, ratchet wheel - 334, engaging block - 335. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1-2 , the present utility model provides a technical solution for a municipal construction guardrail: a municipal construction guardrail, including a guardrail net 1, a fixing device 2 and a retracting device 3. The guardrail net 1 is movable inside the retracting device 3, and the fixing device 2 is fixedly installed on both sides of the guardrail net 1; the right end of the guardrail net 1 is connected to the fixing shaft 31.

[0026] Please refer to Figure 3-4 , the present utility model provides a technical solution for a municipal construction guardrail: a municipal construction guardrail, the fixing device 2 includes a hook 21 and a fixing buckle 22. The hook 21 is fixedly installed at the left end of the guardrail net 1, and the fixing buckle 22 is fixedly installed on the right side of the retracting device 3; the retracting device 3 includes a fixing shaft 31, a hairspring 32 and a rotation limiter 33. The rotation limiter 33 is fixedly installed at the upper end of the fixing shaft 31, and the hairspring 32 is connected to the fixing shaft 31; there are multiple groups of hooks 21 and fixing buckles 22; there are two hairsprings 32, and the hairsprings 32 are arranged at the upper and lower ends of the fixing shaft 31; the hairspring 32 is made of steel and has excellent elasticity and strength.

[0027] Please refer to Figure 5, the present utility model provides a technical solution for a municipal construction guardrail: A municipal construction guardrail includes a rotation limiter 33, which includes a pull rod 331, a pawl 332, a tension spring 333, a ratchet wheel 334, and an engagement block 335. The pull rod 331 is connected to the pawl 332. One end of the tension spring 333 is fixedly connected to the pawl 332. The ratchet wheel 334 meshes with the pawl 332. The engagement block 335 is fixedly connected to the ratchet wheel 334; the tension spring 333 is made of alloy steel and has the characteristics of high strength and good toughness.

[0028] The working principle is as follows. By a person pulling the guardrail net 1 to the left, the ratchet wheel 334 rotates clockwise, and the pawl 332 cannot limit and fix it. Thus, the guardrail net 1 can be smoothly pulled out and hung on the fixed buckle 22, which can fix the guardrail net 1 and prevent it from falling easily. Moreover, the right end of the guardrail net 1 is wound around the outside of the fixed shaft 31, so that when a person pulls, the guardrail net 1 will not fall off due to over-pulling.

[0029] When it is necessary to wind up the guardrail net 1, by a person pulling the pull rod 331 outwards, the pawl 332 is disengaged from the ratchet wheel 334, the ratchet wheel 334 rotates counterclockwise, and drives the fixed shaft 31 to rotate to wind up the guardrail net 1.

[0030] The control mode of the present utility model is controlled by manually starting and closing a switch. The wiring diagram of the power element and the power supply are common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control mode and wiring layout of the present utility model will not be explained in detail.

[0031] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The power supply is also common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be explained in detail.

[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A municipal construction protective fence, comprising a guardrail net (1) and a winding device (3), wherein the guardrail net (1) is movable inside the winding device (3); It is characterized in that: It further includes a fixing device (2). The fixing device (2) is fixedly installed on both sides of the guardrail net (1). The fixing device (2) includes a hook (21) and a fixing buckle (22). The hook (21) is fixedly installed at the left end of the guardrail net (1), and the fixing buckle (22) is fixedly installed on the right side of the winding device (3); The winding device (3) includes a fixed shaft (31), a hairspring (32) and a rotation limiter (33). The rotation limiter (33) is fixedly installed at the upper end of the fixed shaft (31), and the hairspring (32) is connected to the fixed shaft (31); The rotation limiter (33) includes a pull rod (331), a pawl (332), a tension spring (333), a ratchet wheel (334) and an engaging block (335). The pull rod (331) is connected to the pawl (332). One end of the tension spring (333) is fixedly connected to the pawl (332). The ratchet wheel (334) is movably matched with the pawl (332), and the engaging block (335) is fixedly connected to the ratchet wheel (334).

2. The municipal construction guardrail according to claim 1, wherein: The right end of the guardrail net (1) is connected to the fixed shaft (31).

3. A municipal construction guardrail according to claim 1, characterized in that: There are multiple groups of the hook (21) and the fixing buckle (22).

4. A municipal construction guardrail according to claim 1, characterized in that: There are two hairsprings (32), and the hairsprings (32) are arranged at the upper and lower ends of the fixed shaft (31).

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