A temporary guardrail for municipal bridge construction and its installation method

Abstract

The present invention discloses a temporary guardrail for municipal bridge construction, comprising a guardrail surface and a column. The column is provided with an elongated hole that cooperates with the guardrail surface to allow the guardrail surface to pass through. A stop block is provided in the elongated hole. A stop portion is provided at the first end of the guardrail surface to restrict the first end of the guardrail surface from passing through the elongated hole. The guardrail also includes a fixing portion for fixing the first and second ends of the guardrail surface to corresponding columns. The columns can be moved to a predetermined position using universal wheels and fixed to pre-embedded components. The temporary guardrail of the present invention facilitates the movement of the columns and guardrail surface, facilitates installation, improves installation efficiency, and reduces labor intensity.

Description

Technical Field

[0001] The present invention relates to a temporary guardrail for municipal bridge construction and also relates to an installation method of the temporary guardrail. Background Art

[0002] During the construction of municipal bridges, temporary guardrails need to be set up to ensure the safety of construction workers. Temporary guardrails are also a type of edge protection and their safety requirements need to be ensured. In the existing technology, setting up temporary guardrails includes laying out lines and measuring on the bridge, and moving the columns and guardrail surfaces to the predetermined positions according to the predetermined intervals. Since it is impossible to accurately place the materials in the corresponding positions during transportation, they usually need to be transferred to manual transfer in the later stage. After being transferred to the appropriate position, they are fixed with the embedded components on the bridge to fix the guardrail surface on the columns. In order to ensure the protection requirements, the guardrail surface generally includes a metal frame and a metal wire protective net. It is heavy. During installation, workers need to lift the guardrail to the predetermined position and keep it for a period of time for interface docking and fixing. Therefore, its construction speed is slow and the work intensity of the staff is high. Chinese invention patent publication number CN114856306A discloses a guardrail for municipal road and bridge construction. By setting a servo motor to drive the folding frame to unfold, it achieves the functions of easy carrying and installation. However, the internal gap of this folding frame is large after unfolding. The folding frame is not a rigid connection commonly used for isolation. Its safety protection capability is insufficient. It requires a power supply and usually cannot set up a long guardrail, which limits its use. Summary of the Invention

[0003] The purpose of the present invention is to provide a temporary guardrail for municipal bridge construction that is easy to install. The purpose of the present invention is also to provide an installation method for the above-mentioned temporary guardrail.

[0004] To this end, the present invention provides a temporary guardrail for municipal bridge construction, including a guardrail surface and a column. The column is provided with a long hole that cooperates with the guardrail surface to allow the guardrail surface to pass through. A limit block is provided in the long hole. The first end of the guardrail surface is provided with a limit portion, and the limit portion can limit the first end of the guardrail surface from passing through the long hole. The guardrail also includes a fixing portion, which is used to fix the first and second ends of the guardrail surface to the corresponding column. The column can be moved to a predetermined position under the use of a universal wheel belt and fixed to the embedded component.

[0005] Furthermore, it also includes a slide rail, which connects the long holes of adjacent columns in such a way that the guardrail surface can pass through the long holes of multiple columns along the rail.

[0006] Furthermore, balls are provided at the bottom of the slide rail and the long hole.

[0007] The bottom of the guardrail surface includes a slide groove, a slider that can slide in the slide groove, and a spring connected to the slider. The slider is hinged to the connecting rod, and the connecting rod is hinged to the rod body of the support rod. One end of the support rod is hinged to the bottom of the guardrail surface, and the other end is connected to the universal wheel. In this way, when the support rod contacts the bottom of the long hole, the support rod is retracted into the slide groove so that the guardrail surface passes through the long hole.

[0008] Furthermore, the fixing part includes a card slot provided on the first end and the second end of the guardrail surface and a sleeve sleeved on the outer wall of the column. The sleeve is provided with a card block that cooperates with the card slot. The sleeve can move along the axial direction of the column so that the card block is inserted into the card slot to fix the guardrail surface.

[0009] Furthermore, the limiting portion is a limiting strip on the end face of the first end of the guardrail surface, and the limiting strips are respectively arranged on both sides of the end face width direction of the first end, and the limiting strip is movably connected to the end face through a dovetail groove or an I-shaped groove. A rotary block is provided on the end face of the first end, and the rotation of the rotary block is used to move the limiting block to both sides of the end face and cooperate with the limiting block to limit one end of the guardrail surface to pass through the long hole.

[0010] Furthermore, the guardrail surface includes a frame, a protective net and an anti-kick plate arranged in the frame. The height of the long hole matches the height of the frame. The anti-kick plate is movably connected to the frame so that the anti-kick plate can be tightly attached to the protective net or folded to the bottom of the frame. The sum of the thickness of the protective net and the anti-kick plate is not greater than the thickness of the frame.

[0011] Furthermore, the column is provided with a fixing plate cooperating with the anti-kick plate, and the anti-kick plate can be fixed on the fixing plate.

[0012] The present invention also includes a method for installing a temporary guardrail for municipal bridge construction, comprising the above-mentioned temporary guardrail, comprising the following steps:

[0013] S1: Lay out the lines to locate the position of the first column and fix the first column to the embedded component;

[0014] S2: Move the columns to the rough positions on both sides of the bridge, press the prefabricated slide rails into the reserved slots in the long holes to fix the slide rails to the columns, and use the length of the slide rails to determine the distance between adjacent columns. Complete the installation of all columns and slide rails in sequence.

[0015] S3: Place the guardrail surface into the slide rail and move the guardrail surface forward. After the first guardrail surface passes through the long hole, connect the tail of the first care surface with the front of the second guardrail surface and continue to move the guardrail surface forward until the first guardrail surface moves to the front of the predetermined column.

[0016] S4: Adjust the rotary blocks in sequence to expand the limit strips, continue to move the guardrail surface so that the limit strips on each guardrail surface are evenly matched with the limit blocks, move the sleeve so that the card block fits into the card slot, and fix the sleeve and the column together with the embedded component;

[0017] S5: Flip the kick plate to the bottom of the frame and use bolts to fix the kick plate to the fixing plate one by one to complete the installation of the temporary guardrail.

[0018] The beneficial technical effects of the present invention are:

[0019] (1) In a specific embodiment of the present invention, rollers are provided on the columns to facilitate movement of the columns. The prefabricated tracks are matched with the length of the guardrail surface, so that the position of the columns can be located when the tracks are installed, which is convenient for movement and installation. After being moved into place, the columns are fixed with pre-embedded components to ensure the supporting strength of the columns. The guardrail surface is accurately moved to the predetermined position by the slide rail, which is convenient for installation and reduces labor intensity.

[0020] (2) The cooperation between the rotary block and the limit strip allows the guardrail surface to pass through multiple columns, making it easier for the guardrail surface to be transferred on the slide rail. When the guardrail surface is moved to the predetermined position, the limit strip is unfolded by the rotary block. When one of the guardrail surfaces is moved again, the other guardrail surfaces connected to each other can be driven to move to the correct position. The column and the guardrail surface are fixed together by the movable sleeve, which also facilitates construction and reduces labor intensity.

[0021] (3) The reversible anti-kick plate can be set to be thinner, and can pass through the long hole of the column and be fixed to the column, thereby enhancing the firmness of the guardrail surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic front view of the connection between the column and the slide rail in Example 1 of the present invention;

[0023] Figure 2 A schematic side view of a column and a sleeve;

[0024] Figure 3 It is a schematic diagram of the main view of the guardrail surface;

[0025] Figure 4 is a schematic side view of the first end of the guardrail surface;

[0026] Figure 5 Schematic diagram of the connection plate and steel bar fixation;

[0027] Figure 6 This is a schematic front view of the guardrail surface of Example 2;

[0028] Figure 7 Schematic diagram of the support rod in Example 2;

[0029] Figure 8 Schematic diagram of the kick plate before and after flipping;

[0030] Figure 9 Schematic diagram of the movable base and columns.

[0031] Explanation of the accompanying reference numerals: 1. Guardrail surface; 101. First end; 102. Second end; 103. Limiting bar; 104. Dovetail groove; 105. Rotating block; 106. Card slot; 107. Protective net; 108. Anti-kick plate; 109. Slide groove; 110. Slider; 111. Spring; 112. Connecting rod; 113. Support rod; 2. Column; 201. Long hole; 202. Limiting block; 203. Fixed plate; 3. Sleeve; 301. Card block; 4. Universal wheel; 5. Slide rail; 6. Ball bearing; 7. Connecting plate; 8. Embedded component; 9. Metal hook; 10. Mobile base. DETAILED DESCRIPTION

[0032] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0033] Reference Figures 1 to 6As shown, a temporary guardrail for municipal bridge construction of the present invention includes a guardrail surface 1 and a column 2. The column 2 is provided with a long hole 201 that cooperates with the guardrail surface 1 so that the guardrail surface 1 passes through. A limit block 202 is provided in the long hole 201. The first end 101 of the guardrail surface 1 is provided with a limit portion, which can limit the first end 101 of the guardrail surface 1 from passing through the long hole 201. The guardrail also includes a fixing portion, which is used to fix the first end 101 and the second end 102 of the guardrail surface 1 to the corresponding column 2. The column 2 can be moved to a predetermined position under the use of the universal wheel 4 and fixed to the embedded component 8. In embodiment 1 of the present invention, the column 2 can be a cylinder or a square column, the long hole 201 is a square hole, the two ends of the square hole have different widths, and the step surface between the hole of smaller width and the hole of larger width constitutes a limit block 202, the limit block includes a first end 101 of the guardrail surface 1, and a limit strip 103 is provided on the end face thereof in a mirror-symmetrical manner in the width direction, an I-shaped groove or a dovetail groove 104 is provided on the end face, the limit strip 103 is inserted into the dovetail groove 104 or the I-shaped groove and is movable, and a rotary block 105 is provided between the relative limit strips 103, and the rotary block 105 is an elongated strip as a whole and The long end and the short end are connected by an arc. When the rotary block 105 is rotated so that the long end is perpendicular to the limit bar 103, the limit bar 103 can be stretched, so that the limit bar 103 moves to both sides of the end face and cooperates with the limit block 202 to limit the first end 101 of the guardrail surface 1 to pass through the long hole 201. The columns 2 are connected by a slide rail 5 that cooperates with the guardrail surface 1. The slide rail 5 can be prefabricated with a fixed length. The bottom of the long hole of the column 2 can be provided with a groove. The slide rail 5 is connected to the column 2 by being inserted into the groove of the long hole 201. Of course, it can also be screwed by bolts or screw holes.During installation, first determine the position of the first column 2, then move the column 2 to a rough position driven by the universal wheel 4, and locate the position of the column 2 by installing the slide rail 5 into the column 2. After the column 2 and the slide rail 5 are installed in place one by one, put the column 2 at the starting section into the guardrail surface 1, and the first end 101 of the guardrail surface 1 passes through the long hole 201 at the front and the second end 102 at the back. In order to facilitate the movement of the guardrail surface 1, balls 6 are provided on the surface of the slide rail 5 and the long hole 201. When the first guardrail surface 1 is moved to the appropriate position, the second guardrail surface 1 is connected end to end with the first guardrail surface 1. The connection method can include existing methods such as hook rope and clamping. Continue to move the first and second guardrail surfaces, repeat the above process, and move the multi-sided guardrail surface 1 forward. If the temporary guardrail is long, the guardrail surface 1 can be moved to the corresponding position in multiple batches. When the guardrail surface 1 is about to move to the target column 2 for fixation, first stretch the limit bar 103 of each guardrail surface 1, and continue to move the guardrail surface 1 until the limit bar 103 cooperates with the limit block 202. Each guardrail surface 1 is completed with the corresponding column 2, and the end guardrail surface 1 is fixed to the column 2. When the matching accuracy is high, after the end guardrail surface 1 is fixed, the other guardrail surfaces 1 and columns 2 can be accurately matched. When the accuracy is insufficient, it can be matched by disconnecting the connection between adjacent guardrail surfaces 1 and making certain adjustments. In order to facilitate movement, a handle can be fixed on the guardrail surface 1, and the handle can be stored in a storage slot to prevent the handle from obstructing the guardrail surface from passing through the long hole.

[0034] In the above embodiment, referring to Figure 2 and Figure 3 As shown, the fixing portion includes a slot 106 provided on the first end 101 and the second end 102 of the guardrail surface 1 and a sleeve 3 sleeved on the outer wall of the column 2. The sleeve 3 is provided with a block 301 that cooperates with the slot 106. The sleeve 3 can move along the axial direction of the column 2 so that the block 301 is inserted into the slot 106 to fix the guardrail surface 1. In this embodiment, a hole can also be provided in the slot 106, and the block 301 is provided with a telescopic rod that cooperates with the hole, such as a spring 111 connected to the rod. When the block 301 is inserted into the slot 106 and in place, the telescopic rod is inserted into the hole. The telescopic rod can be ejected by a button for removal. Since the push-type buckle is a prior art, it will not be described here. In this embodiment, a connecting plate 7 can be provided below the sleeve 3 and at the bottom of the column 2. The sleeve 3 can be provided with a groove at the position of the connecting plate 7 of the column 2 to facilitate the extension of the connecting plate 7 of the column. Figure 5As shown, the connecting plate of the column 2 and the connecting plate of the sleeve 3 can be combined together, with a hole in the middle. The embedded part is usually the steel bar on the bridge. The metal hook 9 is placed on the steel bar, and the tail rod passes through the connecting plate 7 to fasten the column 2 and the sleeve 3 with bolts to complete the fixation of the column 2. Of course, this embodiment can also use existing technologies such as anchor bolts and bases to fix the sleeve and column to the bridge deck. The surface of the column 2 can be provided with a circle of protrusions to cooperate with the inner wall of the sleeve 3 so that the sleeve 3 can be connected to the top of the column 2. By applying a force, the sleeve 3 overcomes the friction resistance and fixes the guardrail surface 1.

[0035] In the above embodiment, the guardrail surface 1 includes a frame, a protective net 107 and an anti-kick plate 108 arranged in the frame. The protective net 107 is usually a metal net, and the anti-kick plate 108 is a metal plate. Since the anti-kick plate 108 is arranged at the bottom of the frame, in order to facilitate the movement with the ball 6, the anti-kick plate 108 needs to be set to a certain width or made into an L-shape or concave shape. Although the L-shape or concave shape is lighter than a solid plate, when it is used to cooperate with the ball 6, it needs to support the entire guardrail surface 1 and also needs a certain degree of support. Therefore, it cannot be made too thin, because it is heavy and difficult to carry, especially when it is installed manually. Figure 8 As shown, the height of the long hole 201 matches the height of the frame, and the anti-kick plate 108 is movably connected to the frame so that the anti-kick plate 108 can be closely attached to the protective net 107 or flipped under the frame. The sum of the thickness of the protective net 107 and the anti-kick plate 108 is not greater than the thickness of the frame. Figure 8 The left side is a schematic diagram of the anti-kick plate 108 being attached to the protective net 107. The anti-kick plate can be fixed to the protective net 107 by means of existing methods such as buckles. Figure 9 The right side shows the flipped version. In this embodiment, the kick plate 108 can be made thinner and not used to support the guardrail surface 1. Once the guardrail is in place, the kick plate 108 is flipped over and installed. The column 2 can be provided with a fixing plate 203 that mates with the kick plate 108. The kick plate 108 and the fixing plate 203 can be provided with matching screw holes, and the kick plate 108 can be fixed to the fixing plate 203 using bolts.

[0036] Reference Figure 6 and Figure 7 As shown, embodiment 2 of the present invention is basically the same as embodiment 1, with the only difference being that the slide rail 5 is not provided in embodiment 2, but the bottom of the guardrail surface 1 includes a slide groove 109, a slider 110 that can slide in the slide groove 109, and a spring 111 connected to the slider 110, the slider 110 is hinged to the connecting rod 112, the connecting rod 112 is hinged to the rod body of the support rod 113, one end of the support rod 113 is hinged to the bottom of the guardrail surface 1, and the other end is connected to the universal wheel 4, in such a way that when the support rod 113 contacts the bottom of the long hole 201, the support rod 113 is retracted into the slide groove 109 so that the guardrail surface 1 passes through the long hole 201.

[0037] The present invention also includes the method for installing the temporary guardrail of embodiment 1, comprising the following steps:

[0038] S1: Laying out the lines to locate the position of the first column 2, and fixing the first column 2 to the embedded component 8;

[0039] S2: Move the columns 2 to the rough positions on both sides of the bridge, press the prefabricated slide rails 5 into the grooves in the long holes 201, fix the slide rails 5 to the columns 2, and use the length of the slide rails 5 to determine the distance between adjacent columns 2. Complete the installation of all columns 2 and slide rails 5 in sequence.

[0040] S3: Place the guardrail surface 1 into the slide rail 5 and move the guardrail surface 1 forward. After the first guardrail surface passes through the long hole 201, connect the rear end of the first guardrail surface with the front end of the second guardrail surface 1 and continue to move the guardrail surface 1 forward until the first guardrail surface 1 moves to the front of the predetermined column 2.

[0041] S4: Adjust the rotary block 105 in sequence to expand the limit bar 103, continue to move the guardrail surface 1, so that the limit bar 103 of each guardrail surface 1 is evenly matched with the limit block 202, move the sleeve 3 so that the clamping block 301 is clamped into the clamping groove 106, and fix the sleeve 3 and the column 2 together with the embedded component 8;

[0042] S5: Flip the anti-kick plate 108 to the bottom of the frame, and use bolts to fix the anti-kick plate 108 to the fixing plate 203 one by one to complete the installation of the temporary guardrail.

[0043] The installation method of the temporary guardrail of Example 2 of the present invention is different from the installation method of the temporary guardrail of Example 1. The limit strip 103 in Example 2 is usually fixed and cannot be adjusted. During installation, the second end 102 of the first guardrail surface 1 is first passed through the long hole 201 of the column 2 and fixed to the end column 2. The end column 2 is moved so that the limit strip 103 of the second end 102 of the first guardrail surface 1 cooperates with the corresponding limit block 202 of the column 2. The first end 101 of the second guardrail surface 1 is then passed through a column 2 and connected to the first end 101 of the first guardrail surface 1. The above process is repeated. In this process, the movement of multiple columns 2 and guardrail surfaces 1 can be achieved by continuously moving the end column 2. After moving into place, the columns 2 and guardrail surface 1 are fixed, as well as the columns 2 and the embedded components 8 are fixed. In the above Example 2, referring to Figure 9 As shown, it can also include a mobile base, and the column 2 can be detachably fixed on the mobile base for movement to prevent the narrow column 2 and guardrail from tipping over during movement. When the column 2 is moved into place, the mobile base 10 can be removed and fixed.

[0044] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A temporary guardrail for municipal bridge construction, comprising a guardrail surface and columns, characterized in that: The column is provided with a long hole that cooperates with the guardrail surface so that the guardrail surface passes through, and a limit block is provided in the long hole. The first end of the guardrail surface is provided with a limit portion, and the limit portion can limit the first end of the guardrail surface from passing through the long hole. The guardrail also includes a fixing portion, which is used to fix the first and second ends of the guardrail surface to the corresponding column. The column can be moved to a predetermined position under the use of a universal wheel belt and fixed to the embedded component; The fixing portion includes a clamping groove provided on the first and second ends of the guardrail surface and a sleeve sleeved on the outer wall of the column. The sleeve is provided with a clamping block that cooperates with the clamping groove. The sleeve can move along the axial direction of the column so that the clamping block is clamped into the clamping groove to fix the guardrail surface. The limiting portion is a limiting strip on the end surface of the first end of the guardrail surface, the limiting strips are respectively provided on both sides of the end surface width direction of the first end, the limiting strip and the end surface are movably connected through a dovetail groove or an I-shaped groove, and a rotary block is provided on the end surface of the first end, and the rotary block is rotated to move the limiting block to both sides of the end surface to cooperate with the limiting block to limit one end of the guardrail surface from passing through the long hole; Also comprising a slide rail, said slide rail connecting the long holes of adjacent posts in such a manner that the guardrail surface can pass through the long holes of a plurality of posts along the rail; or The bottom of the guardrail surface includes a slide groove, a slider that can slide in the slide groove, and a spring connected to the slider. The slider is hinged to the connecting rod, and the connecting rod is hinged to the rod body of the support rod. One end of the support rod is hinged to the bottom of the guardrail surface, and the other end is connected to the universal wheel. In this way, when the support rod contacts the bottom of the long hole, the support rod is retracted into the slide groove so that the guardrail surface passes through the long hole.

2. A temporary guardrail for municipal bridge construction according to claim 1, characterized in that: Ball bearings are provided at the bottom of the slide rail and the long hole.

3. A temporary guardrail for municipal bridge construction according to claim 1 or 2, characterized in that: The guardrail surface includes a frame, a protective net and an anti-kick plate arranged in the frame. The height of the long hole matches the height of the frame. The anti-kick plate is movably connected to the frame so that the anti-kick plate can be tightly attached to the protective net or folded to the bottom of the frame. The sum of the thickness of the protective net and the anti-kick plate is not greater than the thickness of the frame.

4. A temporary guardrail for municipal bridge construction according to claim 3, characterized in that: The upright column is provided with a fixing plate matched with the anti-kick plate, and the anti-kick plate can be fixed on the fixing plate.

5. A method for installing a temporary guardrail for municipal bridge construction, comprising the temporary guardrail according to claim 4, characterized in that: The following steps are involved: S1: Lay out the lines to locate the position of the first column and fix the first column to the embedded component; S2: Move the columns to the rough positions on both sides of the bridge, press the prefabricated slide rails into the reserved slots in the long holes to fix the slide rails to the columns, and use the length of the slide rails to determine the distance between adjacent columns. Complete the installation of all columns and slide rails in sequence. S3: Place the guardrail surface into the slide rail and move the guardrail surface forward. After the first guardrail surface passes through the long hole, connect the tail of the first care surface with the front of the second guardrail surface and continue to move the guardrail surface forward until the first guardrail surface moves to the front of the predetermined column. S4: Adjust the rotary blocks in sequence to expand the limit strips, continue to move the guardrail surface so that the limit strips on each guardrail surface are evenly matched with the limit blocks, move the sleeve so that the card block fits into the card slot, and fix the sleeve and the column together with the embedded component; S5: Flip the kick plate to the bottom of the frame and use bolts to fix the kick plate to the fixing plate one by one to complete the installation of the temporary guardrail.

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