A temporary guardrail for bridge construction

Abstract

The utility model provides a temporary guardrail for bridge construction, which solves the problem that the existing temporary guardrail for bridges is easily tilted or even collapsed due to large forces on the side, posing a threat to the safety of construction workers. The utility model provides a tripod structure formed by a bottom bar, an inclined bar and the bottom bar itself at the bottom of the column, which can improve the stability of the column and enhance the load and pressure of the column from the middle side of the bridge in the horizontal direction, thereby preventing the column from tilting toward the edge of the bridge or even collapsing, posing a threat to the safety of construction workers.

Description

Technical Field

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

[0002] With the development of the times and the continuous construction and development of transportation, in order to facilitate the connection of roads on both sides of waters and valleys, or when roads need to pass through rivers, harbors, lakes, reservoirs, channels and other areas, in order to ensure smooth traffic, bridges need to be built. At the same time, prosperous urban areas sometimes need to build elevated roads composed of viaducts. These are all highway bridges. When building highway bridges, in order to ensure the safety of the construction area and prevent irrelevant personnel from entering the construction area, and at the same time avoid external interference in the construction area, it is often necessary to use temporary guardrails to isolate the construction area to ensure the normal construction of the staff.

[0003] Temporary guardrails for bridges are generally installed on the edges of both sides of the bridge to prevent construction workers from accidentally falling off the bridge. However, when existing temporary guardrails for bridges are subjected to large forces on the sides, such as wind pressure or external impact, they are prone to tilting or even collapse, posing a threat to the safety of construction workers. Utility Model Content

[0004] In order to solve the problem in the background technology that the existing temporary bridge guardrails are subjected to large forces on the sides, are prone to tilt or even collapse, and pose a threat to the safety of construction workers, the utility model proposes a temporary guardrail for bridge construction.

[0005] The technical solution of the utility model is: a temporary guardrail for bridge construction, comprising a plurality of columns arranged at intervals on the left and right, the columns are U-shaped steel with front openings, a guardrail can be detachably fixed between two adjacent columns, and the bottom of the column can be detachably fixed on the edge of the bridge.

[0006] The left and right sides of the bottom end of the column are hinged with bottom rods extending backward, the bottom of the bottom rod is against the surface of the bridge, the end of the bottom rod away from the column is hinged with an oblique rod, the oblique rod is tilted from top to bottom and from front to back, and a first through hole that is transparent to the left and right is opened at the end of the oblique rod away from the bottom rod, and the left and right sides of the column are opened with second through holes that are transparent to the left and right, the two first through holes correspond to the two second through holes front and back, and the two first through holes and the two second through holes are jointly penetrated by a second fastener, and the second fastener is used to fix the end of the oblique rod away from the bottom rod to the column.

[0007] Preferably, a first internally threaded sleeve with an upper opening structure is pre-embedded at the edge of the bridge, a first fixing plate is fixedly provided at the bottom of the column, a first bolt is passed through the first fixing plate, and the first bolt thread is inserted into the first internally threaded sleeve. The first bolt is used to tighten and fix the first fixing plate to the edge of the bridge through the first internally threaded sleeve.

[0008] Preferably, two mounting plates spaced apart up and down are fixedly provided at both ends of the guardrail, and two mounting slots spaced apart up and down and transparent left and right are provided on the left and right sides of the column, and the mounting plates are movably inserted in the mounting slots; a first mounting hole is provided on the mounting plate, and a second mounting hole corresponding to the first mounting hole in front and back is provided on the rear side of the column, and a first fastener is commonly penetrated through the first mounting hole and the second mounting hole corresponding to the front and back, and the mounting plate is used to fix the guardrail between two adjacent columns through the first fastener.

[0009] Preferably, the bottom rod is a long rod structure with an L-shaped cross section.

[0010] Preferably, third through holes that are transparent to the left and right are opened on both the left and right sides of the column, and the two third through holes correspond to each other on the left and right.

[0011] Preferably, a fixing rod is hinged inside the column, the fixing rod is tilted from top to bottom and from back to front, the top of the fixing rod is located in the upper and lower center of the column, the bottom end of the fixing rod is hinged with a hinge seat, a second fixing plate is fixed on the hinge seat, and the second fixing plate is detachably fixed on the bridge surface.

[0012] Preferably, a second bolt is fixedly provided on the second fixing plate, a plurality of second internally threaded sleeves are pre-embedded in the bridge, the second internally threaded sleeves are located in front of the first internally threaded sleeves, and the bottom end thread of the second bolt is inserted into the second internally threaded sleeves.

[0013] Preferably, the fixed rod includes a first rod member and a second rod member, the first rod member and the second rod member are staggered left and right, the top end of the first rod member is hinged to the column, the bottom end of the second rod member is hinged to the hinge seat, the top end of the second rod member and the bottom end of the first rod member are both provided with fourth through holes corresponding to the front and rear, and a hinge shaft is commonly passed through the two fourth through holes.

[0014] Preferably, the top end of the second rod and the bottom end of the first rod are both provided with fifth through holes corresponding to each other in the front and rear, and a pin is passed through the two fifth through holes.

[0015] Advantages of the utility model: The utility model provides a tripod structure formed by a bottom rod, an inclined rod and the bottom rod itself at the bottom of the column, which can improve the stability of the column and at the same time enhance the column's ability to withstand the load and pressure from the middle side of the bridge in the horizontal direction, thereby preventing the column from tilting toward the edge of the bridge or even collapsing, posing a threat to the safety of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 Schematic diagram of the structure of the center column;

[0019] Figure 3 For this utility model Figure 2 Another perspective structural diagram of;

[0020] Figure 4 For this utility model Figure 2 Schematic diagram of the structure of the fixed rod.

[0021] In the figure: 1, column; 2, first fixing plate; 3, first bolt; 4, mounting plate; 5, bottom rod; 6, diagonal rod; 7, second fastener; 8, third through hole; 9, fixing rod; 901, first rod member; 902, second rod member; 903, hinge shaft; 904, latch; 10, hinge seat; 11, second fixing plate; 12, second bolt; 13, guardrail. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1: A temporary guardrail for bridge construction, such as Figure 1-4As shown, it includes a plurality of columns 1 arranged at intervals on the left and right. Specifically, the column 1 is a U-shaped steel with a front opening. The bottom of the column 1 can be detachably fixed on the edge of the bridge. Specifically, the front of the column 1 faces the inner side of the bridge, and the rear of the column faces the edge of the bridge. A first internally threaded sleeve with an upper opening structure is pre-buried at the edge of the bridge. A first fixing plate 2 is fixedly provided at the bottom of the column 1. A first bolt 3 is passed through the first fixing plate 2. The first bolt 3 is threadedly inserted in the first internally threaded sleeve. The first bolt 3 is used to tighten and fix the first fixing plate 2 to the edge of the bridge through the first internally threaded sleeve, thereby fixing the column 1 to the edge of the bridge. By fixing the column 1 to the edge of the bridge in a pre-buried manner, compared with the traditional method of fixing the column 1 with a counterweight block, the stability of the column 1 at the edge of the bridge can be improved, the safety of the construction workers can be guaranteed, and compared with the traditional method of fixing with the first expanding bolt, the column 1 can be fixed without damaging the bridge structure.

[0024] A guardrail 13 is detachably fixed between two adjacent columns 1. Specifically, two mounting plates 4 spaced apart up and down are fixedly provided at both ends of the guardrail 13. Two mounting slots spaced apart up and down and transparent to the left and right are provided on the left and right sides of the column 1. The mounting plate 4 is movably inserted into the mounting slots. A first mounting hole is provided on the mounting plate 4. A second mounting hole corresponding to the first mounting hole in front and back is provided on the rear side of the column 1. A first fastener is commonly inserted into the first and second mounting holes corresponding to the front and back. The mounting plate 4 is used to fix the guardrail 13 between two adjacent columns 1 through the first fastener.

[0025] The left and right sides of the bottom end of the column 1 are hinged with bottom rods 5 extending backward. Specifically, the bottom of the bottom rod 5 is close to the surface of the bridge. The bottom rod 5 is a long rod structure with an L-shaped cross-section, which can increase the contact area between the bottom rod 5 and the bridge surface and improve the stability. The end of the bottom rod 5 away from the column 1 is hinged with an inclined rod 6. The inclined rod 6 is tilted from top to bottom and from front to back. The end of the inclined rod 6 away from the bottom rod 5 is provided with a first through hole that is transparent to the left and right. The left and right sides of the column 1 are provided with second through holes that are transparent to the left and right. The two first through holes correspond to the two second through holes front and back. The two A second fastener 7 is passed through the first through hole and the two second through holes. The second fastener 7 and the first fastener are both fasteners composed of bolts and nuts. The second fastener 7 is used to fix the end of the diagonal rod 6 away from the bottom rod 5 to the column 1, so that a tripod structure is formed between the bottom rod 5, the diagonal rod 6 and the bottom rod 5, which can improve the stability of the column 1 and enhance the load and pressure of the column 1 from the middle side of the bridge in the horizontal direction, so as to avoid the column 1 from tilting toward the edge of the bridge or even collapsing, which poses a threat to the safety of construction workers.

[0026] A third through hole 8 is provided on both sides of the column 1, and the two third through holes 8 correspond to each other on the left and right. The second fastener 7 can be inserted into the two third through holes 8 to fix the diagonal rod 6 on the third through holes 8, so that the bottom rod 5 and the diagonal rod 6 are vertically attached to the left and right sides of the column 1, reducing the space occupied and facilitating transportation and carrying.

[0027] A fixing rod 9 is hinged in the column 1. The fixing rod 9 is tilted from top to bottom and from back to front. The top of the fixing rod 9 is located in the upper and lower middle parts of the column 1. The bottom end of the fixing rod 9 is hinged with a hinge seat 10. A second fixing plate 11 is fixed on the hinge seat 10. A second bolt 12 is fixedly penetrated on the second fixing plate 11. A plurality of second internally threaded sleeves are pre-buried in the bridge. The second internally threaded sleeves are located in front of the first internally threaded sleeves. The bottom end of the second bolt 12 is threadedly inserted in the second internally threaded sleeves. The bottom end of the fixing rod 9 is connected to the second internally threaded sleeves through the second bolt 12 and the second internally threaded sleeves. Compared with the traditional method of fixing with the first expansion bolt, the method of fixing by pre-embedded second internal threaded sleeve in the bridge can fix the column 1 without damaging the bridge structure. At the same time, the fixing rod 9 fixed to the bridge can enhance the stability of the column 1, and at the same time increase the load and pressure on the column 1 in the horizontal front and rear directions, thereby preventing the sides of the column 1 and the guardrail 13 from tilting due to strong wind force, and preventing the column 1 from tilting toward the edge of the bridge or even collapsing when the construction workers mistakenly squeeze the column 1, posing a threat to the safety of the construction workers.

[0028] The fixing rod 9 includes a first rod member 901 and a second rod member 902. The first rod member 901 and the second rod member 902 are staggered left and right. The top end of the first rod member 901 is hinged to the column 1, and the bottom end of the second rod member 902 is hinged to the hinge seat 10. The top end of the second rod member 902 overlaps with the bottom end of the first rod member 901 front and back. The top end of the second rod member 902 and the bottom end of the first rod member 901 are both provided with fourth through holes corresponding to each other front and back. A hinge shaft 903 is commonly penetrated in the two fourth through holes. The hinge shaft 903 makes the connection between the first rod member 901 and the second rod member 902 hinged, so that the first rod member 901 and the second rod member 902 can be folded to overlap left and right and stored in the column 1, thereby reducing the space occupied and facilitating transportation and carrying.

[0029] The top end of the second rod 902 and the bottom end of the first rod 901 are both provided with fifth through holes corresponding to each other in the front and rear, and a latch 904 is passed through the two fifth through holes. The latch 904 can fix the first rod 901 and the second rod 902 to prevent the first rod 901 and the second rod 902 from rotating and twisting at their hinges when they support the column 1 tiltably.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A temporary guardrail for bridge construction, characterized in that: The bridge comprises a plurality of columns (1) arranged at intervals on the left and right, wherein the columns (1) are U-shaped steel with a front opening, and a guardrail (13) is detachably fixedly provided between two adjacent columns (1), and the bottom of the column (1) is detachably fixedly provided on the edge of the bridge. The left and right sides of the bottom end of the column (1) are both hinged with bottom rods (5) extending backwards, the bottom of the bottom rod (5) is in contact with the bridge surface, the end of the bottom rod (5) away from the column (1) is hinged with an inclined rod (6), the inclined rod (6) is arranged tilted from top to bottom and from front to back, the end of the inclined rod (6) away from the bottom rod (5) is provided with a first through hole that is transparent to the left and right, the left and right sides of the column (1) are both provided with a second through hole that is transparent to the left and right, the two first through holes correspond to the two second through holes in front and back, the two first through holes and the two second through holes are both penetrated with a second fastener (7), the second fastener (7) is used to fix the end of the inclined rod (6) away from the bottom rod (5) to the column (1).

2. A temporary guardrail for bridge construction according to claim 1, characterized in that: A first internally threaded sleeve with an upper opening structure is pre-buried at the edge of the bridge, a first fixing plate (2) is fixedly provided at the bottom of the column (1), a first bolt (3) is passed through the first fixing plate (2), the first bolt (3) is threadedly inserted in the first internally threaded sleeve, and the first bolt (3) is used to tighten and fix the first fixing plate (2) to the edge of the bridge through the first internally threaded sleeve.

3. A temporary guardrail for bridge construction according to claim 1, characterized in that: Two mounting plates (4) spaced apart from each other are fixedly provided at both left and right ends of the guardrail (13); two mounting slots spaced apart from each other and transparent from left to right are provided on both left and right sides of the column (1); the mounting plates (4) are movably inserted into the mounting slots; a first mounting hole is provided on the mounting plate (4); a second mounting hole corresponding to the first mounting hole is provided on the rear side of the column (1); a first fastener is inserted through the first and second mounting holes corresponding to each other; the mounting plate (4) is used to fix the guardrail (13) between two adjacent columns (1) via the first fastener.

4. A temporary guardrail for bridge construction according to claim 1, characterized in that: The bottom rod (5) is a long rod structure with an L-shaped cross section.

5. The temporary guardrail for bridge construction according to claim 1 is characterized by: A third through hole (8) which is transparent to the left and right is opened on both the left and right sides of the upright column (1), and the two third through holes (8) correspond to each other on the left and right sides.

6. A temporary guardrail for bridge construction according to claim 1, characterized in that: A fixing rod (9) is hingedly connected inside the column (1). The fixing rod (9) is tilted from top to bottom and from back to front. The top end of the fixing rod (9) is located at the upper and lower middle parts of the column (1). The bottom end of the fixing rod (9) is hingedly connected to a hinge seat (10). A second fixing plate (11) is fixedly provided on the hinge seat (10). The second fixing plate (11) is detachably fixed on the bridge surface.

7. A temporary guardrail for bridge construction according to claim 6, characterized in that: A second bolt (12) is fixedly inserted into the second fixing plate (11), a plurality of second internally threaded sleeves are pre-buried in the bridge, the second internally threaded sleeves are located in front of the first internally threaded sleeves, and the bottom end of the second bolt (12) is threadedly inserted into the second internally threaded sleeves.

8. A temporary guardrail for bridge construction according to claim 7, characterized in that: The fixing rod (9) comprises a first rod member (901) and a second rod member (902), the first rod member (901) and the second rod member (902) being staggered in left and right positions, the top end of the first rod member (901) being hinged to the column (1), the bottom end of the second rod member (902) being hinged to the hinge seat (10), the top end of the second rod member (902) and the bottom end of the first rod member (901) both being provided with fourth through holes corresponding to each other in the front and rear, and a hinge shaft (903) being passed through the two fourth through holes.

9. A temporary guardrail for bridge construction according to claim 8, characterized in that: The top end of the second rod (902) and the bottom end of the first rod (901) are both provided with fifth through holes corresponding to each other in the front and rear, and a latch pin (904) is inserted through both fifth through holes.

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