A guardrail for road and bridge construction

Abstract

A guardrail for road and bridge construction relates to a guardrail used during road and bridge construction. It is primarily designed to address issues such as the cumbersome installation of existing guardrails requiring additional weight. It comprises two support frames, with a support plate connected between the bottoms of the two support frames. A weight bag is fixed to the support plate at its bottom. The weight bag has an opening at its top and a drain port at its bottom. An extrusion roller is provided below the opening of the weight bag. The support frame has a vertical slide rail, a slide frame is mounted on the vertical slide rail, a slider is provided on the horizontal slide rail of the slide frame, a spring is fixed to the slide frame and the slider, and the extrusion roller is fixed to the slider on the slide frame. A screw is provided on one support frame, a nut is fixed to the slide frame, a wheel is fixed to the upper end of the screw, and a guardrail assembly is provided above the weight bag. Several crossbars are connected between the two scissor-type telescopic mechanisms of the guardrail assembly. The lower end of the scissor-type telescopic mechanism is connected to the slide frame, and the upper end is fixed to the top of the support frame. The advantage is that weight addition is easy.

Description

Technical Field

[0001] The present invention relates to the field of bridge construction, in particular to a guardrail used in road and bridge construction. Background Art

[0002] Bridge and road maintenance is the primary method for maintaining normal road use. Damaged road surfaces are repaired to ensure normal road use and extend their lifespan. During bridge and road construction, to protect the repaired area after completion, multiple guardrails are placed around the repaired area. This prevents vehicles and pedestrians from entering the repaired road and causing damage, while also ensuring driving safety.

[0003] Since guardrails need to be carried and placed everywhere, in order to facilitate transportation and movement, the weight of guardrails is generally light. At present, guardrails are generally cone-shaped structures or iron railing structures. Although both can play a role in reminding passers-by and ensuring their safety, there are still certain defects in use. Cone-shaped guardrails are generally made of plastic and are too light in weight, while iron guardrails are guardrail structures welded together by several iron rods. When used in rainy and snowy weather, both are easily blown away or dumped by the wind, causing them to deviate from the area where warning is required and fail to play a warning role. In order to increase the weight of the two, guardrails are generally placed on the cone-shaped guardrails. Cement mortar is poured into the guardrail to increase its weight. Although this method can play a fixing role, the cost of obtaining cement mortar is relatively high, and the cement mortar in the conical guardrail needs to be cleaned after the construction is completed, which increases the burden of the operation; and the iron guardrail is generally installed in the pre-drilled holes by drilling holes in the pre-installed ground, so that it is fixed to the ground through fixing parts. Although this method can play a fixing role, it will cause damage to the ground, and the installation is relatively cumbersome and inefficient. When pedestrians and vehicles collide with the guardrail in the above two fixing methods, they will cause greater damage to pedestrians and vehicles. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a guardrail for road and bridge construction, which can avoid the guardrail from being offset in windy weather, resulting in the guardrail being unable to protect the construction area. At the same time, the offset guardrail will affect the safety of pedestrians and vehicles, causing safety hazards.

[0005] The purpose of the present invention is achieved as follows: it includes two support frames arranged in the left and right directions, the two support frames are arranged in a mirror-symmetrical state, a support plate is connected between the bottoms of the two support frames, a weight-gaining bag is arranged between the two support frames, the bottom plate of the weight-gaining bag is fixed on the support plate, the top of the weight-gaining bag has an opening, the bottom of the weight-gaining bag is provided with a drain port, a valve is installed on the drain port, the weight-gaining bag is a telescopic tube structure, the weight-gaining bag is used to load liquid and to increase the weight of the two support frames; squeezing rollers are respectively provided on the front and rear sides below the opening of the weight-gaining bag.

[0006] The two supporting frames are provided with vertical slide rails in the up and down directions on the opposite sides of the two supporting frames, and two sliding frames with the same structure are respectively arranged on the vertical slide rails of the two supporting frames, and the two sliding frames are slidably matched with the two vertical slide rails respectively. The two sliding frames are fixed with horizontal slide rails arranged in the front and back directions on the opposite sides of the two sliding frames, and two sliders are slidably installed on the horizontal slide rails of each sliding frame. One end of the two springs is fixed to the front end face and the rear end face of the sliding frame respectively, and the other ends of the two springs are fixed to the two sliders respectively. The left ends of the two squeezing rollers are respectively fixed to the two sliders on the sliding frame on the left, and the right ends of the two squeezing rollers are respectively fixed to the two sliders on the sliding frame on the right. Under the action of the springs, the two squeezing rollers abut against each other to seal the weight-increasing bag below the opening.

[0007] A screw rod is provided on one of the support frames, and the lower end of the screw rod is connected to the bottom of the support frame through a bearing. A nut that is installed in conjunction with the screw rod is fixed on the sliding frame on the support frame. The upper end of the screw rod is exposed from the support frame and is fixed with a rotating wheel. Rotating the rotating wheel can drive the sliding frame to move up and down in the vertical slide rail. The up and down movement of the sliding frame can expand or shrink the weight-gaining bag.

[0008] A guardrail assembly is installed between the two support frames above the weight-gaining bags. The guardrail assembly includes two scissor-type telescopic mechanisms, with several equally spaced horizontal bars arranged vertically between them. The lower ends of the two scissor-type telescopic mechanisms are connected to the tops of the sliding frames of the two support frames, respectively, and the upper ends of the two scissor-type telescopic mechanisms are fixed to the tops of the two support frames via pins. When the sliding frames slide downward, the multiple horizontal bars are evenly spaced apart. When the sliding frames move upward, the multiple horizontal bars are evenly spaced together.

[0009] The scissor-type telescopic mechanism is composed of several hinged connecting rod assemblies. Each connecting rod assembly includes two connecting rods. The middle parts of the two connecting rods cross and are hinged together to form an X shape. The ends of the two connecting rods of two adjacent connecting rod assemblies are hinged together. The left and right ends of each cross bar are respectively connected to the hinge points in the middle parts of the two connecting rods of each corresponding connecting rod assembly.

[0010] A telescopic frame is provided outside the weight-gaining bag. The telescopic frame includes a fixed plate, the left and right ends of which are respectively connected to the sliding frames of the two support frames. A square hole is provided in the middle of the fixed plate. The fixed plate is provided with a plurality of downwardly extending telescopic legs. The telescopic legs include sleeves, the top of which is fixed to the lower surface of the fixed plate. Each sleeve contains a column that slides in contact with the inner wall of the sleeve, and the lower end of the column is fixed to the bottom plate of the weight-gaining bag. The telescopic frame is sleeved outside the weight-gaining bag, that is, it confines the weight-gaining bag to the internal area formed by the telescopic legs of the telescopic frame. The fixed plate of the telescopic frame is located below the two squeezing rollers, and the top of the weight-gaining bag extends out of the square hole of the fixed plate.

[0011] The middle parts of the two squeezing rollers are both provided with an annular groove.

[0012] The advantages of the present invention are: the guardrail is fixed by filling liquid in the weight-increasing bag, thereby increasing the weight of the two support frames, thereby increasing the weight of the guardrail itself, reducing the possibility of the guardrail being blown away by strong winds in rainy and snowy weather, and increasing the stability of the guardrail at the construction site; the liquid filled in the weight-increasing bag can be used as a fire water source in an emergency situation at the construction site, and it can be used as a backup water source. At the same time, since the liquid is only used to increase the weight of the guardrail, the quality requirements of the water source are extremely low, and any form of wastewater can be used to increase the weight of the guardrail. It can better utilize the wastewater, and the wastewater can be reused, which is beneficial to environmental protection; the liquid filled in the weight-increasing bag can play a good buffering role, reducing the harm caused by collision between pedestrians and vehicles and the guardrail, protecting the site while also helping to protect the safety of pedestrians and vehicles, and reducing the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0015] Figure 3 It is a left-side structural schematic diagram of the present invention;

[0016] Figure 4 It is a schematic diagram of the connection state of two support frames in the present invention;

[0017] Figure 5 It is a structural schematic diagram of the weight-increasing bag of the present invention;

[0018] Figure 6 It is a schematic diagram of the connection state of two squeezing rollers and a sliding frame in the present invention;

[0019] Figure 7 It is a structural schematic diagram of the telescopic frame of the present invention;

[0020] Figure 8 This is a schematic diagram of the connection between the weight-added bag, the squeezing roller and the telescopic frame in the present invention;

[0021] Figure 9 It is a structural schematic diagram of the guardrail assembly of the present invention;

[0022] Figure 10 yes Figure 9 Schematic diagram of the structure at point A. DETAILED DESCRIPTION

[0023] The following combination Figure 1-10 The present invention is further described;

[0024] It includes two support frames 1 arranged in the left and right directions, and the two support frames are arranged in a mirror-symmetrical state. A support plate 2 is connected between the bottoms of the two support frames. A weight-added bag 3 is arranged between the two support frames. The bottom plate of the weight-added bag is fixed on the support plate. The top of the weight-added bag has an opening 3-1, and the bottom of the weight-added bag is provided with a drainage port 3-2. A valve is installed on the drainage port. The weight-added bag is a telescopic tube structure. The weight-added bag is used to load liquid and to increase the weight of the two support frames; squeezing rollers 4 are respectively provided on the front and rear sides below the opening of the weight-added bag.

[0025] The opposite sides of the two support frames 1 are provided with vertical slide rails 1-1 in the up and down directions, and two sliding frames 5 with the same structure are respectively arranged on the vertical slide rails of the two support frames, and the two sliding frames are slidably matched with the two vertical slide rails respectively. The opposite sides of the two sliding frames are fixed with horizontal slide rails 5-1 set in the front and back directions, and two sliders 5-2 are slidably installed on the horizontal slide rails of each sliding frame. One end of the two springs 5-3 is fixed to the front end face and the rear end face of the sliding frame respectively, and the other ends of the two springs are fixed to the two sliders respectively. The left ends of the two squeezing rollers 4 are respectively fixed to the two sliders on the sliding frame on the left, and the right ends of the two squeezing rollers are respectively fixed to the two sliders on the sliding frame on the right. Under the action of the springs, the two squeezing rollers abut against each other to seal the weight-gaining bag below the opening.

[0026] A screw rod 1-2 is provided on one of the support frames, and the lower end of the screw rod is connected to the bottom of the support frame through a bearing. A nut that is installed in conjunction with the screw rod is fixed on the sliding frame on the support frame. The upper end of the screw rod is exposed from the support frame and is fixed with a turntable 1-3. Rotating the turntable can drive the sliding frame to move up and down in the vertical slide rail. The up and down movement of the sliding frame can expand or shrink the weight-increasing bag.

[0027] After the support frame moves to the construction area that needs to be protected, the wheel is rotated to drive the weight bag to expand along the vertical direction of the support frame through the sliding frame. After the expansion is completed, liquid is poured into the weight bag. The liquid is preferably water. Compared with the existing method of filling cement mortar in the guardrail or drilling holes in the ground to fix the guardrail, it is most convenient to find a water source at the construction site, and the cost of filling is low. The area expanded by the weight bag is filled with the poured liquid. The more liquid is poured into the weight bag, the heavier the weight bag is, thereby increasing the dead weight of the guardrail itself, reducing the possibility of the guardrail being blown away by strong winds in rainy and snowy weather, and increasing the stability of the guardrail at the construction site. At the same time, the liquid filled in the weight bag can be used as a fire water source in an emergency at the construction site, and can also be used as a backup water source. At the same time, since the liquid is only used to increase The guardrail is heavy, so it has extremely low requirements for the quality of the water source. Any form of wastewater can be used to increase the weight of the guardrail, which can make better use of wastewater, and the wastewater can be reused, which is beneficial to environmental protection. After the operation is completed, open the valve on the drain port, turn the wheel, and drive the weight bag to shrink through the sliding frame. While shrinking the weight bag, the liquid in the weight bag can be discharged faster. Due to the discharge of the liquid, the weight of the guardrail is reduced, which facilitates the handling and transportation of the guardrail. At the same time, the shrinking weight bag makes the guardrail easier to store. In extreme cases, when pedestrians and vehicles collide with the guardrail, the liquid in the weight bag can play a better buffering role, reducing the harm caused by the collision between pedestrians and vehicles and the guardrail, protecting the scene while also helping to protect the safety of pedestrians and vehicles and reduce the occurrence of safety accidents.

[0028] Through the elastic contact between the two squeezing rollers, the two squeezing rollers can seal the lower part of the opening of the weight bag, preventing the water inside from flowing out. When a vehicle or pedestrian collides with the weight bag, causing the weight bag to be subjected to a large pressure impact, the water flow pushes the opening of the weight bag open as the pressure increases. At this time, the spring is compressed, causing the two squeezing rollers to slide away from each other along the second slide rail. The two squeezing rollers move away from each other, allowing the weight bag to slowly release liquid, thus effectively acting as a buffer, reducing the damage caused by pedestrians and vehicles colliding with the guardrail, protecting the scene while also helping to protect pedestrians and vehicles. When the pressure decreases, the two squeezing rollers move closer together under the power of the spring reset, and once again abut each other.

[0029] Due to the setting of the weight bag, when the weight bag is not unfolded, there is a blank area between the top of the weight bag and the top of the support frame. This area cannot play a protective role for the construction area. Therefore, the weight bag cannot serve as a basic guardrail when it is not unfolded. Therefore, we set a guardrail assembly 6 between the two support frames above the weight bag. The guardrail assembly includes two scissor-type telescopic mechanisms 6-1. A number of horizontal bars 6-2 arranged at equal intervals are connected between the two scissor-type telescopic mechanisms. The lower ends of the two scissor-type telescopic mechanisms are respectively connected to the top of the sliding frames of the two support frames, and the upper ends of the two scissor-type telescopic mechanisms are fixed to the top of the two support frames through pins. When the sliding frame slides downward, multiple horizontal bars are unfolded at equal intervals. When the sliding frame moves upward, multiple horizontal bars are approached at equal intervals.

[0030] The scissor-type telescopic mechanism is composed of several hinged connecting rod assemblies. Each connecting rod assembly includes two connecting rods 6-1-1. The middle parts of the two connecting rods cross and are hinged together to form an X shape. The ends of the two connecting rods of two adjacent connecting rod assemblies are hinged together. The left and right ends of each cross bar are respectively connected to the hinge points in the middle parts of the two connecting rods of each connecting rod assembly.

[0031] The up and down movement of the sliding frame drives the two scissor-type telescopic mechanisms to lengthen or shorten, thereby driving the movement of multiple cross bars, so that the multiple cross bars can be spread out or approached at equal intervals during movement, so that the multiple cross bars of the guardrail assembly can match the area expanded due to the contraction of the weight-added bags driven by the sliding frame, so that when the weight-added bags are not expanded, the cross bars can serve as basic guardrails, thereby protecting the construction area, and can also serve the purpose of protection in construction areas without increasing weight, thereby improving the adaptability of the guardrail.

[0032] Since the weight bag is a tubular structure and can be expanded or retracted along the vertical direction of the support frame, it does not have good support. When there is too much liquid in the weight bag, it may fall due to its own weight, thereby affecting the filling of the weight bag with liquid and the efficiency of fixing the guardrail. Therefore, a telescopic frame 7 is set outside the weight bag, and the telescopic frame includes a fixed plate 7-1, the left and right ends of the fixed plate are respectively connected to the sliding frames of the two support frames, a square hole 7-2 is opened in the middle of the fixed plate, and a plurality of telescopic legs 7-3 extending downward are provided on the fixed plate. The telescopic legs include a sleeve, the top of the sleeve is fixed to the lower surface of the fixed plate, and each sleeve has a column in sliding contact with the inner wall of the sleeve, and the lower end of the column is fixed to the bottom plate of the weight bag. The telescopic frame is set outside the weight bag, that is, the weight bag is confined to the internal area formed by the telescopic legs of the telescopic frame. The fixed plate of the telescopic frame is located below the two squeezing rollers, and the top of the weight bag extends out of the square hole of the fixed plate. As the fixed plate moves driven by the sliding frame, the telescopic legs extend or retract with the movement of the fixed plate. Furthermore, because the multiple telescopic legs surround the weight bag, the side walls of the weight bag can rest against the telescopic legs. These legs provide support for the weight bag, preventing the expanded weight bag from tipping over due to excessive liquid, thereby improving the stability of the guardrail.

[0033] An annular groove 4-1 is provided in the middle of the two squeezing rollers. Through the setting of the annular grooves on the two squeezing rollers, a gap is left between the two squeezing rollers for liquid or pipe to pass through. Through this gap, the pipe can be extended from the opening of the weighted bag into the weighted bag to fill the liquid without pulling the squeezing rollers, and the annular groove is convenient for fixing the end of the pipe passing into the weighted bag. At the same time, due to the small gap, it will not affect the water storage function of the weighted bag, so that when it shakes, it will not cause a large amount of liquid inside the weighted bag to flow out.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A guardrail for road and bridge construction, comprising two support frames (1) arranged in left and right directions, characterized in that: A support plate (2) is connected between the bottoms of the two support frames, a weight-gaining bag (3) is provided between the two support frames, a bottom plate of the weight-gaining bag is fixed to the support plate, an opening (3-1) is provided at the top of the weight-gaining bag, a drainage port (3-2) is provided at the bottom of the weight-gaining bag, a valve is installed on the drainage port, and the weight-gaining bag is a telescopic tube structure; squeezing rollers (4) are provided on the front and rear sides below the opening of the weight-gaining bag respectively; The two supporting frames are provided with vertical slide rails (1-1) in the up-down direction on the opposite sides thereof. Two sliding frames (5) of the same structure are respectively arranged on the vertical slide rails of the two supporting frames. The two sliding frames are respectively slidably matched with the two vertical slide rails. The two sliding frames are fixed with horizontal slide rails (5-1) arranged in the front-back direction on the opposite sides thereof. Two sliders (5-2) are slidably mounted on the horizontal slide rails of each sliding frame. One end of the two springs (5-3) is respectively fixed to the front end face and the rear end face of the sliding frame. The other ends of the two springs are respectively fixed to the two sliders. The left ends of the two squeezing rollers (4) are respectively fixed to the two sliders on the sliding frame on the left side. The right ends of the two squeezing rollers are respectively fixed to the two sliders on the sliding frame on the right side. Under the action of the springs, the two squeezing rollers abut against each other to seal the weight-added bag below the opening. A screw rod (1-2) is provided on one of the support frames, the lower end of the screw rod is connected to the bottom of the support frame via a bearing, a nut that cooperates with the screw rod is fixed on a sliding frame on the support frame, and the upper end of the screw rod is exposed from the support frame and is fixed with a rotating wheel (1-3); A guardrail assembly (6) is provided between the two support frames above the weight-gaining bag. The guardrail assembly includes two scissor-type telescopic mechanisms (6-1). A plurality of horizontal bars (6-2) arranged vertically and at equal intervals are connected between the two scissor-type telescopic mechanisms. The lower ends of the two scissor-type telescopic mechanisms are respectively connected to the tops of the sliding frames of the two support frames. The upper ends of the two scissor-type telescopic mechanisms are fixed to the tops of the two support frames via pins. A telescopic frame (7) is arranged outside the weight-gaining bag, and the telescopic frame includes a fixed plate (7-1), the left end and the right end of the fixed plate are respectively connected to the sliding frames of the two support frames, a square hole (7-2) is opened in the middle of the fixed plate, and a plurality of telescopic legs (7-3) extending downward are arranged on the fixed plate, and the telescopic legs include sleeves, the top of the sleeves is fixed to the lower surface of the fixed plate, each sleeve has a column in sliding contact with the inner wall of the sleeve, and the lower end of the column is fixed to the bottom plate of the weight-gaining bag; the telescopic frame is sleeved outside the weight-gaining bag, the fixed plate of the telescopic frame is located below the two squeezing rollers, and the top of the weight-gaining bag extends out of the square hole of the fixed plate.

2. The road and bridge construction guardrail according to claim 1, characterized in that: The scissor-type telescopic mechanism is composed of several hinged connecting rod assemblies, each of which includes two connecting rods (6-1-1). The middle parts of the two connecting rods cross and are hinged together to form an X shape. The ends of the two connecting rods of two adjacent connecting rod assemblies are hinged together. The left and right ends of each crossbar are respectively connected to the hinge points in the middle parts of the two connecting rods of the corresponding connecting rod assemblies.

3. The guardrail for road and bridge construction according to claim 1 is characterized by: An annular groove (4-1) is provided in the middle of the two squeezing rollers.

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