Temporary protective fence for box girder

Abstract

The utility model discloses a temporary protective fence for a box girder. The temporary protective fence for the box girder comprises two vertical pipes, two ropes and a protective net. The two vertical pipes are arranged in parallel, and vertical steel bars on the edge of the box girder extend into the vertical pipes from the bottom. The two ends of the two ropes are fixed to vertical steel bars on the edge of the box girder, and the two ropes are arranged in the axial direction of the vertical pipes in a spaced mode and connected to the two vertical pipes to define a protection area. The protection net is located in the protection area, and the four edges of the protection net are connected to the two vertical pipes and the two ropes correspondingly. According to the temporary protective fence for the box girder, constructors are effectively protected, and the hidden danger of high-altitude falling is eliminated.

Description

Technical Field

[0001] This application relates to safety or protection measures for personnel during construction, and in particular to a temporary protective fence for box girders. Background Technology

[0002] In bridge construction, after the precast box girders are hoisted, workers need to perform subsequent construction work at height. Due to the inherent characteristics of the box girder structure, the working area is relatively narrow and lacks fixed protective facilities, which poses a significant risk of falls from height to workers during critical processes such as wet joint pouring and prestressing tensioning. Especially under adverse weather conditions or at night, reduced visibility and complex working environments further increase safety hazards. Utility Model Content

[0003] This application provides a temporary protective fence for box girders, which solves the technical problem of the risk of construction workers falling from heights when carrying out subsequent construction work after the precast box girders have been hoisted. It effectively protects construction workers and eliminates the hidden danger of falling from heights.

[0004] The temporary protective fence for box girders provided in this application embodiment includes: two vertical pipes arranged in parallel, through which vertical reinforcing bars along the edge of the box girder extend from the bottom; two ropes, both ends of which are fixed to the vertical reinforcing bars along the edge of the box girder, the two ropes being spaced apart along the axial direction of the vertical pipes and connected to the two vertical pipes to form a protective area; and a protective net located in the protective area, with its four sides connected to the two vertical pipes and the two ropes respectively.

[0005] In one possible implementation, the riser has at least one slot, and when the vertical reinforcing bars along the edge of the box girder extend into the riser, the vertical reinforcing bars along the edge of the box girder cover the at least one slot; the temporary protective fence for the box girder also includes: a plurality of U-bolts, each of the slots is equipped with the U-bolts to fix the riser to the vertical reinforcing bars along the edge of the box girder.

[0006] In one possible implementation, the temporary protective fence for the box girder further includes: a mounting bracket detachably connected to the two risers; and an infrared alarm connected to the mounting bracket for triggering an alarm when a worker approaches the protective fence.

[0007] In one possible implementation, the mounting bracket includes a horizontal tube, a connector, and a support platform; both ends of the horizontal tube are detachably connected to the top ends of the two vertical tubes, the connector is slidably connected to the horizontal tube in a direction parallel to the axial direction of the vertical tube, and the support platform is connected to the connector; wherein the infrared alarm is mounted on the support platform.

[0008] In one possible implementation, the connector has a groove extending in a direction parallel to the axial direction of the riser, and the horizontal pipe has a mounting hole corresponding to the groove; the temporary protective fence for the box girder further includes a fastening assembly passing through the groove and the mounting hole to fix the connector and the horizontal pipe.

[0009] The technical solutions provided in this application embodiment have at least the following technical effects:

[0010] This application provides a temporary protective fence for box girders, which includes two vertical pipes, two ropes, and a protective net. After the precast box girder is hoisted, the temporary protective fence is installed on the vertical reinforcing bars along the edge of the box girder, and the two ropes secure the fence in place. The protective net prevents workers from entering the precast box girder area. Therefore, this temporary protective fence effectively protects construction workers and eliminates the risk of falls from heights. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a structural schematic diagram of the temporary protective fence for box girders provided in an embodiment of this application;

[0013] Figure 2 This is a schematic diagram of the riser structure provided in an embodiment of this application;

[0014] Figure 3 This is a schematic diagram of fixing the riser and vertical reinforcing bar with U-bolts, as provided in an embodiment of this application.

[0015] Reference numerals: 100-Riser; 110-Groove; 120-Fixing hole; 200-Rope; 300-Safety net; 400-U-bolt; 500-Mounting bracket; 510-Horizontal pipe; 520-Connector; 521-Slide groove; 530-Bearing platform; 600-Infrared alarm; 700-Fastening assembly; 800-Fastener; 900-Vertical reinforcing bar. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0018] This application provides a temporary protective fence for box girders, such as... Figure 1 As shown, the temporary protective fence for the box girder includes two risers 100, two ropes 200, and a protective net 300.

[0019] Specifically, two risers 100 are arranged in parallel, allowing the vertical reinforcing bars 900 along the edge of the box girder to extend from the bottom. Both ends of two ropes 200 are fixed to the vertical reinforcing bars 900 along the edge of the box girder. The two ropes 200 are spaced apart along the axial direction of the risers 100 and are connected to both risers 100, forming a protective area. A protective net 300 is located within the protective area, and its four sides are connected to the two risers 100 and the two ropes 200, respectively.

[0020] For example, the rope 200 is a steel wire rope, which is fixedly connected to the two risers 100 by fasteners 800.

[0021] After the precast box girder is hoisted, a temporary protective fence is installed along the vertical reinforcing bars 900 on the edge of the box girder, and two ropes 200 are used to secure the temporary protective fence. A protective net 300 effectively prevents workers from entering the precast box girder area. Therefore, this temporary protective fence effectively protects construction workers and eliminates the risk of falls from height.

[0022] like Figure 2 As shown, in this embodiment of the application, the riser 100 has at least one slot 110. When the vertical reinforcing bar 900 along the edge of the box girder extends into the riser 100, the vertical reinforcing bar 900 along the edge of the box girder covers the slot 110 on the riser 100. Figure 3 As shown, the temporary protective fence for the box girder also includes multiple U-bolts 400. Each slot 110 is equipped with a U-bolt 400 to fix the riser 100 to the vertical steel bar 900 on the edge of the box girder.

[0023] When installing the temporary protective fence for the box girder, firstly, the vertical reinforcing bars 900 along the edge of the box girder extend into the columns from the bottom of the two risers 100. Then, U-bolts 400 are used to fix the risers 100 and the vertical reinforcing bars 900 along the edge of the box girder through the slots 110. This structure allows the temporary protective fence to be more firmly connected to the box girder. Furthermore, after the wet joint pouring, prestressing tensioning, and other construction operations on the box girder are completed, when permanent protective structure construction is required, the U-bolts 400 can be removed and the ropes 200 can be removed from the vertical reinforcing bars 900 along the edge of the box girder, allowing the temporary protective fence to be recycled for future use.

[0024] Continue to refer to Figure 1 In this embodiment, the temporary protective fence for the box girder also includes a mounting bracket 500 and an infrared alarm 600. The mounting bracket 500 is detachably connected to two risers 100. The infrared alarm 600 is connected to the mounting bracket 500 and is used to sound an alarm when a worker approaches the protective netting 300.

[0025] The infrared alarm 600 can detect workers approaching the protective net 300 and issue an alarm to stop the workers from moving outwards, further ensuring the safety of construction workers.

[0026] Figure 1The specific structure of the mounting bracket 500 is shown. The mounting bracket 500 includes a horizontal tube 510, a connector 520, and a support platform 530. The two ends of the horizontal tube 510 are detachably connected to the top ends of two vertical tubes 100. The connector 520 is slidably connected to the horizontal tube 510 in a direction parallel to the axial direction of the vertical tubes 100. The support platform 530 is connected to the connector 520. The infrared alarm 600 is mounted on the support platform 530.

[0027] When installing the temporary protective fence on the box girder, firstly, extend the vertical steel bar 900 along the edge of the box girder into the riser 100 from the bottom of the riser 100. Secondly, fix both ends of the two ropes 200 to the vertical steel bar 900 along the edge of the box girder. Then, connect both ends of the horizontal pipe 510 to the top of the two risers 100. Slide the connector 520 to the horizontal pipe 510 in a direction parallel to the axial direction of the riser 100. Finally, install the infrared alarm 600 on the support platform 530.

[0028] When removing the temporary protective fence from the box girder, first remove the infrared alarm 600 from the support platform 530, then remove the two ends of the two ropes 200 from the vertical steel bars 900 along the edge of the box girder, then remove the two ends of the horizontal pipe 510 from the top of the two vertical pipes 100, and remove the connector 520 from the horizontal pipe 510. Finally, detach the bottom of the vertical pipe 100 from the vertical steel bars 900 along the edge of the box girder.

[0029] Since the connector 520 can be slidably connected to the horizontal pipe 510 in a direction parallel to the axial direction of the riser 100, when the temporary protective fence of the box girder is installed on the box girder, the installer can adjust the height of the connector 520 according to the height of the construction workers and the structure of the box girder, so that the infrared alarm 600 is in a position that can effectively detect workers approaching the protective net 300.

[0030] For example, the two ends of the horizontal tube 510 are connected to the top ends of the two vertical tubes 100 by bolts and nuts.

[0031] Furthermore, such as Figure 1 As shown, the connector 520 has a groove 521 extending in a direction parallel to the axial direction of the riser 100, and the horizontal pipe 510 has a mounting hole corresponding to the groove 521. The temporary protective fence for the box girder also includes a fastening assembly 700, which passes through the groove 521 and the mounting hole to fix the connector 520 and the horizontal pipe 510.

[0032] When it is necessary to adjust the height of the connector 520, first remove the fastening assembly 700 or operate the fastening assembly 700 to release the fixed state between the connector 520 and the horizontal tube 510, then move the connector 520 to the set height, and finally use the fastening assembly 700 to fix the connector 520 and the horizontal tube 510.

[0033] For example, the fastening assembly 700 includes a bolt and a wing nut, the bolt passing through a groove 521 and a mounting hole, and the wing nut being mounted on the bolt.

[0034] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0035] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A temporary protective fence for box girders, characterized in that, include: Two risers are arranged in parallel, allowing the vertical reinforcing bars along the edge of the box girder to extend from the bottom. Two ropes, both ends of which are fixed to the vertical reinforcing bars along the edge of the box girder, are spaced apart along the axial direction of the risers and are both connected to the two risers, forming a protective area; and A protective net is located in the protected area, and the four sides of the protective net are respectively connected to the two vertical pipes and the two ropes.

2. The temporary protective fence for box girders according to claim 1, characterized in that, The riser has at least one slot. When the vertical steel bar along the edge of the box girder extends into the riser, the vertical steel bar along the edge of the box girder covers the at least one slot. Also includes: Multiple U-bolts are installed in each of the slots to fix the riser to the vertical reinforcing bars along the edge of the box girder.

3. The temporary protective fence for box girders according to claim 1, characterized in that, Also includes: Mounting bracket, which is detachably connected to the two risers; An infrared alarm, connected to the mounting bracket, is used to sound an alarm when a worker approaches the protective net.

4. The temporary protective fence for box girders according to claim 3, characterized in that, The mounting bracket includes a horizontal tube, connectors, and a support platform; The two ends of the horizontal tube are detachably connected to the top of the two vertical tubes. The connector can be slidably connected to the horizontal tube in a direction parallel to the axial direction of the vertical tube. The support platform is connected to the connector. The infrared alarm is installed on the support platform.

5. The temporary protective fence for box girders according to claim 4, characterized in that, The connector has a sliding groove that extends in a direction parallel to the axial direction of the riser, and the horizontal pipe has a mounting hole corresponding to the sliding groove. Also includes: A fastening assembly passing through the groove and the mounting hole to secure the connector and the cross tube.

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