Turnover guardrail for temporary steel bridge

Abstract

The utility model discloses a turnover guardrail for a temporary steel bridge, which comprises a stand column assembly and a plurality of stand column bodies which are in one-to-one correspondence with cross beams of the temporary steel bridge and are detachably mounted on the cross beams through first connecting assemblies. The transverse assembly comprises a plurality of transverse penetrating pipes which are perpendicularly connected to the multiple stand column bodies and spliced end to end through second connecting assemblies. The end plug assembly comprises an end stand column detachably installed on the stand column body located at the end of the guardrail through a third connecting assembly, traditional rigid connection is converted into hinged connection, welding and fire operation is not needed for installation, a traditional method of large welding work amount is changed, construction efficiency is improved, safety is enhanced, and the safety of the guardrail is improved. And the use cost is reduced, and certain popularization value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a rotatable guardrail for a steel temporary bridge. Background Art

[0002] In the construction of traditional steel temporary bridge guardrails, the columns are generally welded to the bridge deck or beam, and the transverse steel pipes are spot welded to the columns or directly connected and welded to the transverse pipes to ensure the overall stability and use function of the guardrail. This construction requires a large amount of welding work and low construction efficiency. The material turnover rate is extremely low after dismantling, which increases the construction cost. In addition, the rigid connection between the column and the transverse steel pipe, and between the steel pipes, is very easy to be damaged under dynamic load conditions, which increases the use cost. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a rotatable guardrail for a steel temporary bridge, which transforms the traditional rigid connection into a hinged connection and can be disassembled after use, thereby reducing the use cost and improving the construction efficiency.

[0004] In order to achieve the above technical effects, the utility model provides a rotatable guardrail for a steel temporary bridge, which includes:

[0005] The column assembly includes a plurality of column bodies corresponding to the steel temporary bridge cross beams one by one and detachably mounted on the cross beams through a first connecting assembly;

[0006] A transverse assembly, comprising a plurality of transverse tubes vertically connected to the plurality of column bodies and spliced ​​end to end with each other through a second connecting assembly;

[0007] The end plug assembly includes an end column detachably mounted on a column body located at the end of the guardrail through a third connecting assembly.

[0008] Preferably, the first connecting assembly includes a sleeve fixedly mounted on the bottom of the column body, and a slot is formed on the sleeve for inserting the wing plate of the steel temporary bridge beam.

[0009] Preferably, a hole is provided on the side of the sleeve facing away from the column body, and a sleeve bolt is inserted into the hole to cooperate with a sleeve nut, and to fix the column body and the steel temporary bridge beam to be fixedly connected after the wing plate is inserted into the slot.

[0010] Preferably, each of the column bodies is provided with a corresponding first through hole for the cross-tube to pass through, and the second connecting assembly includes a cross-tube connecting pipe and a retaining ring fixedly installed on the outer circumference of the cross-tube connecting pipe, and the two ends of the cross-tube connecting pipe along the length direction form a sleeve portion for the two adjacent cross-tubes to be sleeved and connected.

[0011] Preferably, the outer diameter of the sleeve portion is smaller than the inner diameter of the transverse tube, and the diameter of the retaining ring is larger than the outer diameter of the transverse tube.

[0012] Preferably, a plurality of the transverse components are evenly spaced along the height direction of the column body, each group of the transverse components includes a plurality of the transverse tubes spliced ​​end to end, and each column body has a plurality of the first through holes for the plurality of the transverse tubes to pass through.

[0013] Preferably, a plurality of second through holes are correspondingly provided on the end column and the column body located at the end of the guardrail, and the third connecting component includes an end bolt inserted in the second through hole and used to cooperate with an end nut to fix the end column to the column body located at the end of the guardrail.

[0014] Preferably, an end plug is fixedly mounted on the end column, and a side of the end plug facing away from the end column abuts against the cross pipe located at the end of the guardrail.

[0015] Due to the adoption of the above technical solution, the technical effects achieved by the utility model are:

[0016] 1) In order to solve the problems that the welding workload of steel temporary bridge guardrails constructed by traditional technology is large, the construction efficiency is low, the material turnover rate after later dismantling is extremely low, which increases the construction cost, and the rigid connection between the column and the transverse steel pipe and between the steel pipes under dynamic load conditions is very easy to be damaged, which increases the use cost, etc., the self-designed rotatable guardrail column assembly, cross pipe connection assembly, and end plug assembly are connected by bolts or space sleeve conversion to form a rotatable guardrail for steel temporary bridges;

[0017] 2) The rotatable guardrail is simple, using bolts and space sleeves for conversion connection, and can be disassembled after use. Excluding damage during use, the turnover rate can reach 100%, reducing construction costs;

[0018] 3) Move the hot work to the processing plant before entering the site, so there is no need for hot work on site, changing the traditional construction process with large welding workload and great safety hazards, improving construction efficiency and enhancing safety;

[0019] 4) Use bolts or space sleeve conversion connection to transform the traditional rigid connection into a hinged connection, which is more suitable for long-term dynamic load conditions, and the maintenance and use costs are greatly reduced;

[0020] 5) The components are universal and do not require professional personnel to operate. Ordinary workers can construct them. They are flexible, convenient, recyclable, economical and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The utility model is a flow chart of the construction method of the rotatable guardrail for the steel temporary bridge.

[0023] Figure 2 This is a schematic diagram of the assembly of the center column assembly of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the card set in the utility model.

[0025] Figure 4 It is a schematic diagram of the state in which the center column assembly of the utility model is installed to the cross beam of the steel temporary bridge.

[0026] Figure 5 It is a schematic diagram of the state after the cross-through tube is inserted into the center column assembly of the utility model.

[0027] Figure 6 It is a schematic diagram of the installation of the second connecting component in the utility model.

[0028] Figure 7 It is a schematic diagram of the connection between the transverse pipes in the utility model.

[0029] Figure 8 It is a schematic diagram of the disassembled structure assembly of the end plug assembly in the utility model.

[0030] Fig. 9 This is a schematic diagram of the installation of the end plug assembly to the column assembly in the utility model.

[0031] Fig.10 This is a schematic diagram of the state in which the rotatable guardrail for a steel temporary bridge according to an embodiment of the utility model is installed.

[0032] The corresponding relationship of the numbers in the accompanying drawings is as follows:

[0033] 1-crossbeam; 101-wing plate; 2-column body; 3-cross pipe; 4-first connecting component; 41-clamp; 42-slot; 5-clamp nut; 6-clamp bolt; 7-first through hole; 8-second connecting component; 9-cross pipe connecting pipe; 10-third connecting component; 11-end plug; 12-end nut; 13-end bolt; 14-end column. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figures 1 to 10 As shown, an embodiment of the utility model provides a rotatable guardrail for a temporary steel bridge, including a column assembly, a transverse assembly and an end plug assembly. The column assembly includes a plurality of column bodies 2 which correspond one-to-one to the temporary steel bridge beam 1 and are detachably mounted on the beam 1 through a first connecting assembly 4. The first connecting assembly includes a sleeve 41 fixedly mounted on the bottom of the column body 2. A slot 42 is formed on the sleeve 41 for inserting a wing plate 101 of the beam 1. Preferably, a hole is provided on the side of the sleeve 41 facing away from the column body 2. A sleeve nut 5 is inserted into the hole to cooperate with a sleeve bolt 6 for fixing the column body 2 to the beam 1 after the wing plate 101 is inserted into the slot 42. It should be noted that in this embodiment, the sleeve 41 is welded with steel plates as shown in the figure. Figure 3 The shape shown in the figure is convenient for penetrating into the wing plate 101 on the beam 1. The sleeve nut 5 is welded to the through hole reserved on the connection part of the sleeve 41 with an M12 nut. The column body 2, the sleeve 41, and the sleeve nut 5 are connected together by welding before leaving the factory. During on-site construction, the assembly consisting of the column body 2, the sleeve 41, and the sleeve nut 5 is fixed to the wing plate 101 of the I-beam of the beam 1 by the sleeve bolt 6. The traditional rigid connection is transformed into a hinged connection through bolt connection, which reduces the phenomenon of re-repair caused by concentrated influence under dynamic load conditions, saves maintenance costs, is better suitable for dynamic load conditions, and puts hot work in advance to ensure that there is no hot work during the installation of the guardrail, thereby enhancing construction safety.

[0036] See also Figures 5 to 7 As shown, the transverse component includes a plurality of transverse tubes 3 vertically connected to a plurality of column bodies 2 and spliced ​​end to end through a second connecting component 8, each column body 2 is provided with a corresponding first through hole 7 for the transverse tube 3 to pass through, the second connecting component includes a transverse tube connecting tube 9 and a retaining ring fixedly installed on the outer periphery of the transverse tube connecting tube 9, and the two ends of the transverse tube connecting tube 9 along the length direction form a sleeve portion for sleeves and connection of two adjacent transverse tubes 3, preferably, in this embodiment, the outer diameter of the sleeve portion is smaller than the inner diameter of the transverse tube 3, and the diameter of the retaining ring is larger than the outer diameter of the transverse tube 3.

[0037] Furthermore, in this embodiment, multiple groups of transverse components are evenly spaced along the height direction of the column body 2, and each group of transverse components includes multiple transverse tubes 3 spliced ​​end to end, and each column body 2 is provided with multiple first through holes 7 for the multiple transverse tubes 3 to pass through. It should be noted that in this embodiment, the first through hole 7 on the column body 2 is completed in the factory before entering the site, and the aperture is 1 cm larger than the transverse tube 3 to facilitate free movement under dynamic loads and avoid stress concentration. The retaining ring is a hollow annular steel cylinder, and the transverse tube connecting pipe 9 is welded in the factory before entering the site. It changes the rigid connection between the traditional transverse tubes 3 into a hinged connection, reduces the phenomenon of re-repair due to concentrated influence under dynamic load conditions, and saves maintenance costs.

[0038] See also Figures 8 to 10 As shown, the end plug assembly includes an end column 14 detachably mounted on the column body 1 located at the end of the guardrail through a third connecting assembly 10, and a plurality of second through holes are correspondingly opened on the end column 14 and the column body 1 located at the end of the guardrail. The third connecting assembly includes an end bolt 13 inserted in the second through hole and used to cooperate with the end nut 12 to fix the end column 14 to the column body 1 located at the end of the guardrail. Preferably, an end plug 11 is also fixedly mounted on the end column 14, and the side of the end plug 11 facing away from the end column 14 abuts against the cross pipe 3 located at the end of the guardrail. It should be noted that, in this embodiment, the end plug 11 is made of round steel bars with a diameter of 20 mm and solid annular steel plates (the diameter is more than 1.5 cm larger than the cross-pipe), and is welded with the end column 14 in the factory before entering the site. After the on-site guardrail is installed, the components consisting of the end plug 11 and the end column 14 are hinged and fixed to the installed rotatable guardrail column assembly using end nuts 12 and end bolts 13. It changes the rigid connection between traditional cross-pipes into a hinged connection, reduces the phenomenon of re-repairs caused by concentrated influences under dynamic load conditions, saves maintenance costs, and can be repeatedly used without welding, thereby improving construction efficiency.

[0039] The construction method of the rotatable guardrail for a steel temporary bridge of the utility model comprises the following steps:

[0040] Installation of guardrail posts → Perforation of cross-pipes → Installation of cross-pipe connecting pipes → Installation of end plugs.

[0041] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rotatable guardrail for a temporary steel bridge, characterized in that: include: The column assembly includes a plurality of column bodies corresponding to the steel temporary bridge cross beams one by one and detachably mounted on the cross beams through a first connecting assembly; A transverse assembly, comprising a plurality of transverse tubes vertically connected to the plurality of column bodies and spliced ​​end to end with each other through a second connecting assembly; The end plug assembly includes an end column detachably mounted on a column body located at the end of the guardrail through a third connecting assembly.

2. The rotatable guardrail for a temporary steel bridge according to claim 1, characterized in that: The first connecting component includes a sleeve fixedly installed at the bottom of the column body, and a slot for inserting the wing plate of the steel temporary bridge beam is formed on the sleeve.

3. The rotatable guardrail for a temporary steel bridge according to claim 2, characterized in that: A hole is provided on the side of the sleeve facing away from the column body, and a sleeve nut is inserted into the hole to cooperate with the sleeve bolt, which is used to fix the column body and the steel temporary bridge beam after the wing plate is inserted into the slot.

4. The rotatable guardrail for a temporary steel bridge according to claim 1, characterized in that: A first through hole for the cross-tube to pass through is correspondingly opened on each of the column bodies. The second connecting assembly includes a cross-tube connecting pipe and a retaining ring fixedly installed on the outer circumference of the cross-tube connecting pipe. The two ends of the cross-tube connecting pipe along the length direction form a sleeve portion for the two adjacent cross-tubes to be sleeved and connected.

5. The rotatable guardrail for a temporary steel bridge according to claim 4, characterized in that: The outer diameter of the sleeve portion is smaller than the inner diameter of the transverse tube, and the diameter of the retaining ring is larger than the outer diameter of the transverse tube.

6. The rotatable guardrail for a temporary steel bridge according to claim 4, characterized in that: The transverse components are evenly spaced in a plurality of groups along the height direction of the column body, each group of the transverse components includes a plurality of the transverse tubes connected end to end, and each column body is provided with a plurality of the first through holes for the plurality of the transverse tubes to pass through.

7. The rotatable guardrail for a temporary steel bridge according to claim 1, characterized in that: A plurality of second through holes are correspondingly provided on the end column and the column body located at the end of the guardrail, and the third connecting component includes an end bolt inserted in the second through hole and used to cooperate with the end nut to fix the end column to the column body located at the end of the guardrail.

8. The rotatable guardrail for a temporary steel bridge according to claim 1, characterized in that: An end plug is fixedly mounted on the end column, and a side of the end plug facing away from the end column abuts against the cross pipe located at the end of the guardrail.

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