Adjustable corrugated beam guardrail and resetting device

Abstract

The adjustable wave-shaped beam guardrail and resetting device comprises a stand column, a bracket, a wave-shaped breast board and a fastener, and at least two first connecting holes are formed in the upper end of the stand column; the bracket comprises a U-shaped frame body, and a wing plate is arranged on the side, close to the road, of the U-shaped frame body. An adjusting groove and a second connecting hole are formed in the U-shaped frame body, and the wave-shaped breast board is installed on one side of the wing plate; and the fasteners are used for connecting and fastening the brackets and the upright posts as well as the brackets and the wave-shaped breast boards. The construction limitation that a traditional guardrail can only be installed after pavement hardening is broken through, installation of the guardrail body is completed in advance before pavement hardening, a sufficient roadside operation space can be provided for construction equipment only by moving the bracket to the preset avoiding position along the adjusting groove, and the construction efficiency is improved. Potential quality hazards such as insufficient installation precision and infirm structure fixation caused by assault construction are avoided, and meanwhile the timeliness of road traffic is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of highway guardrail technology, specifically relating to an adjustable corrugated beam guardrail and a reset device. Background Technology

[0002] Corrugated beam guardrails, as an indispensable safety protection facility in modern highway traffic infrastructure, are widely used on the roadside and median strips of highways at all levels. Their core function is to absorb collision energy through deformation when a vehicle experiences an out-of-control collision, effectively preventing the vehicle from running off the road or entering the oncoming lane, thus reducing casualties and property damage. They are of paramount importance for ensuring highway traffic safety and maintaining traffic order. With the rapid development of highway construction in my country, higher requirements have been placed on the construction quality, efficiency, and adaptability of corrugated beam guardrails.

[0003] In highway engineering construction, corrugated beam guardrail projects are typically completed later in the project lifecycle. Constrained by the overall project schedule, they generally face the prominent problems of short construction periods and high schedule pressure. The bracket design and supporting construction techniques of traditional roadside corrugated beam guardrails further exacerbate the contradiction of tight schedules, creating a passive situation of "inability to construct in the early stages and forced rushing in the later stages," which seriously affects the construction quality of guardrail projects and the overall project delivery efficiency.

[0004] According to highway engineering specifications, the inner surface of the corrugated guardrail must be flush with the inner surface of the curbstone to ensure the protective effectiveness, aesthetic regularity, and smooth traffic flow. This specification imposes strict constraints on the precision and workflow of guardrail construction. The current standard construction process for corrugated guardrails is as follows: Figure 1 As shown, the guardrail post 1 is first vertically fixed to the roadside foundation by a pile driver. After the asphalt paving and hardening of the road surface are completed, the corrugated guardrail 3 is then installed, bolted and adjusted.

[0005] The aforementioned construction process presents a significant conflict: the asphalt paving and subsequent hardening of the road surface require the use of large construction machinery such as pavers and rollers. These machines have a wide operating range and require ample space. If corrugated guardrails are installed before road construction, the large machinery is highly susceptible to collisions and scrapes with the guardrails during operation, which could damage the guardrails, affect construction accuracy, and potentially lead to mechanical failures and safety hazards. Therefore, for the sake of construction safety and road quality, the installation of corrugated guardrails must be postponed until after the road surface is fully hardened.

[0006] This procedural constraint prevents the core processes of installing guardrail panels and bolts before the road surface construction is completed. A large amount of construction work is concentrated within the limited timeframe after the road surface construction is finished. To meet the deadline, construction companies often resort to rushed construction methods, which easily leads to quality problems such as insufficient installation accuracy of the guardrail panels and inadequate bolt tightening, reducing the safety performance of the guardrails. At the same time, rushed construction may also increase labor and machinery costs and increase management difficulty. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adjustable corrugated beam guardrail and a reset device to solve the problem that traditional corrugated beam guardrails are limited by the interference of road construction machinery, making it impossible to achieve the early connection construction of guardrail posts and guardrail panels, resulting in a passive situation of "unable to construct in the early stage and forced to rush in the later stage", as well as the problem that the construction quality is difficult to guarantee.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: According to a first aspect of the present invention, an adjustable corrugated beam guardrail comprises: The column has at least two first connecting holes at its upper end; A bracket is installed on the upper end of a column. The bracket includes a U-shaped frame with a wing plate on the side of the U-shaped frame closest to the road. The U-shaped frame has an adjustment groove and a second connecting hole, with the left end of the adjustment groove and the second connecting hole being collinear in the vertical direction. A wave-shaped guardrail is installed on one side of the wing plate; Fasteners used to connect and secure brackets to posts, and brackets to corrugated guardrails; Before the road surface is hardened, slide the bracket along the adjustment groove to the side away from the road surface, install the fastener in the adjustment groove, and after the road surface is hardened, loosen the fastener in the adjustment groove, push the bracket along the adjustment groove to the side closer to the road surface, install another fastener in the second connection hole, and tighten both fasteners.

[0009] Furthermore, the horizontal distance between the two ends of the adjustment groove is between 100mm and 200mm, that is, the clearance distance 'a' between the corrugated guardrail and the inner side of the curbstone is equal to 100mm-200mm.

[0010] Furthermore, the adjusting groove is inclined downwards towards the side closer to the road surface, and when the bracket slides along the adjusting groove to the leftmost end, the lower edge of the U-shaped frame is flush with the upper end of the first connecting hole. After the bracket slides to the leftmost end, fasteners are installed in both the adjusting groove and the second connecting hole, wherein the fastener in the first connecting hole supports the lower edge of the U-shaped frame. After the road surface hardens, the fastener in the first connecting hole is removed, and the fastener in the adjusting groove is loosened. The bracket automatically resets under its own weight and the guiding action of the inclined adjusting groove, so that the second connecting hole is aligned with the first connecting hole. Then, the fastener is reinstalled in the aligned hole, and the fastener in the adjusting groove is tightened at the same time.

[0011] Furthermore, the U-shaped frame is provided with a first limiting plate on the side near the wing plate, and when the bracket moves to the leftmost end, the right side of the column is close to the first limiting plate; the U-shaped frame is provided with at least one second limiting plate on the side away from the wing plate, and when the bracket moves to the rightmost end, the left side of the column is close to the second limiting plate.

[0012] Furthermore, the column has a first screw on one side and a second screw on the other side, with a locking nut threaded onto one of the first and second screws; it also includes a filling frame, which is a box-shaped structure with an open bottom. The side wall of the filling frame has an opening groove adapted to the first and second screws. When the bracket moves to the leftmost end, the filling frame is fitted onto the outside of the first screw through the opening groove, and the locking nut is tightened onto the first screw to lock and fix the filling frame. At this time, the left end face of the filling frame abuts against the second limiting plate; when the bracket moves to the rightmost end, the filling frame is fitted onto the outside of the second screw through the opening groove, and the locking nut is tightened onto the second screw to lock and fix the filling frame. At this time, the right end face of the filling frame abuts against the first limiting plate; the upper end face of the filling frame is a slope.

[0013] Furthermore, the fastener includes a bolt, one end of which is a smooth arc surface, and a washer is provided on the bolt. A sleeve is provided on one side of the washer and coaxially sleeved outside the bolt. The other end of the bolt is threaded with a fastening nut, and the fastening nut is an octagonal nut or a pentagonal nut, so that the fastener constitutes an anti-theft structure.

[0014] Furthermore, a spring is fitted around the bolt, with one end of the spring abutting against a washer and the other end abutting against the fastening nut. After the fastening nut is tightened, the spring is in a compressed state and generates an elastic preload, which continuously acts on the fastening nut.

[0015] According to a second aspect of the present invention, a reset device is provided for the reset operation of the aforementioned adjustable corrugated beam guardrail, comprising a base placed on a curbstone, a fixing block provided on one side of the base, and a support leg threadedly connected to the fixing block, the support leg being used to level the base and enhance the stability of the base placement; The upper part of the base is equipped with a lifting cylinder, and the piston rod end of the lifting cylinder is connected to a lifting frame. The lower end of the corrugated guardrail is placed on the upper part of the lifting frame.

[0016] Furthermore, a fixed buckle plate is fixedly connected to one end of the base, and a movable buckle plate is provided on one side of the fixed buckle plate. The fixed buckle plate and the movable buckle plate are detachably connected by fastening bolts. The fixed buckle plate and the movable buckle plate together form a clamping cavity adapted to the column. The fixed buckle plate and the movable buckle plate are sleeved on the outside of the column and locked and fixed by fastening bolts.

[0017] Furthermore, the base has several guide slopes on both sides, and the inclination angle of the guide slopes is equal to the inclination angle of the adjustment groove. The guide slopes are provided with limiting grooves arranged along their extension direction. The lower part of the lifting frame is provided with moving wheels, which are embedded in the limiting grooves and can slide along them. The lower end of the cylinder seat of the lifting cylinder is pivotally connected to the base, and the upper end of the piston rod of the lifting cylinder is pivotally connected to the lower part of the lifting frame.

[0018] The beneficial effects of this invention are: (1) This invention breaks the construction limitation that guardrails can only be installed after the road surface is hardened. It realizes the installation of the main body of the guardrail before the road surface is hardened. The bracket only needs to be moved along the adjustment groove to the preset avoidance position to provide sufficient roadside working space for construction equipment. It solves the industry pain point of "the guardrail installation in the early stage hinders the road surface hardening and the guardrail is installed in a rush to meet the construction period in the later stage". It avoids the quality hazards such as insufficient installation accuracy and unstable structural fixation caused by rush construction, and at the same time ensures the timeliness of road opening.

[0019] (2) The adjustment groove is arranged at an angle. After the bracket slides to the leftmost end, the fastener in the first connecting hole supports the lower edge of the U-shaped frame, which improves the structural stability of the temporary installation of the guardrail. After the fastener in the first connecting hole is removed, the bracket automatically resets under its own weight and the tilt guide of the adjustment groove. There is no need for manual adjustment of the hole, which simplifies the operation steps, reduces the work intensity, and improves the construction efficiency of the formal fixing of the guardrail.

[0020] (3) By setting the first limiting plate and the second limiting plate, a rigid constraint is formed on the side of the column to avoid structural deformation or damage to the adjustment groove, connecting hole and fastener due to excessive displacement; by setting the position adjustable filling frame, and the filling frame abuts against the column and the first or second limiting plate and forms a rigid support for the bracket, the stability of the bracket installation is further guaranteed.

[0021] (4) The fastening nuts adopt non-standard octagonal or pentagonal structures and require special disassembly and assembly tools to operate. Compared with conventional hexagonal nuts, they can effectively prevent unauthorized personnel from disassembling the fasteners at will, avoid the failure of the installation structure of the guardrail due to human theft or damage, and ensure the structural integrity and protective effectiveness of the guardrail during the construction and formal use stages.

[0022] (5) A spring is installed on the outside of the bolt. The elastic restoring force of the spring forms a pre-tightening force that continuously acts on the fastening nut. This can effectively offset the bolt connection gap caused by road vehicle traffic, natural vibration, temperature deformation, etc., and prevent the fastening nut from loosening or stripping. This achieves long-term anti-loosening locking of the fastener and ensures the reliability of the connection structure of the guardrail during long-term use.

[0023] (6) When the resetting device of the present invention is in use, the piston rod of the lifting cylinder slowly retracts, driving the wave beam and bracket to slowly reset, avoiding the deformation of the adjusting groove caused by the impact force generated by the bracket's sudden and rapid reset due to its own weight, and preventing the column from shaking or tilting due to impact.

[0024] (7) By using fixed buckle plates and movable buckle plates to hug the column, the installation stability of the resetting device during operation is improved.

[0025] (8) Multiple guide slopes with the same inclination angle as the adjustment groove are set on both sides of the base. When the lifting cylinder extends and retracts, the lifting frame moves along the guide slope, and the moving displacement of the lifting frame is consistent with the moving displacement of the bracket. This not only avoids friction between the corrugated guardrail and the lifting frame, causing scratches on the paint surface of the corrugated guardrail, but also ensures the stability of the corrugated guardrail's reset. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an existing corrugated beam guardrail.

[0027] Figure 2 This is a schematic diagram of the adjustable corrugated beam guardrail and reset device of the present invention.

[0028] Figure 3 This is a schematic diagram of the assembly of the column and bracket.

[0029] Figure 4 This is a partial schematic diagram of the column.

[0030] Figure 5 This is a schematic diagram of one side of the bracket.

[0031] Figure 6 This is a schematic diagram of the other side of the bracket.

[0032] Figure 7 This is a schematic diagram of the filling rack.

[0033] Figure 8 This is a diagram showing the bracket moving to its rightmost extreme position.

[0034] Figure 9 This is a diagram showing the bracket moving to its leftmost extreme position.

[0035] Figure 10 This is a schematic diagram of the reset device.

[0036] Figure 11 This is a schematic diagram of the base structure.

[0037] Figure 12 This is a schematic diagram of the fastener structure.

[0038] Figure 13 This is a diagram showing the state of the bracket and wave-shaped guardrail before they are reset.

[0039] Figure 14 This is a diagram showing the state of the bracket and wave-shaped guardrail after they have been reset.

[0040] In the diagram, 1. Column; 11. First connecting hole; 12. First screw; 13. Second screw; 2. Bracket; 21. U-shaped frame; 22. Wing plate; 23. Adjustment groove; 24. Second connecting hole; 25. First limiting plate; 26. Second limiting plate; 3. Corrugated guardrail; 4. Fastener; 41. Bolt; 42. Fastening nut; 43. Sleeve; 44. Spring; 45. Washer; 5. Curbstone; 6. Filler frame; 61. Opening groove; 7. Base; 71. Guide slope; 72. Lifting cylinder; 73. Fixing block; 74. Outrigger; 75. Fixed buckle plate; 76. Movable buckle plate; 8. Lifting frame; 81. Moving wheel. Detailed Implementation

[0041] The following will be combined with the appendix Figures 1-14 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0043] like Figure 2, Figure 3 As shown, according to a first aspect of the present invention, an adjustable corrugated beam guardrail includes a post 1, a bracket 2, a corrugated guardrail panel 3, and fasteners 4, such as... Figure 4 As shown, the upper end of the column 1 is provided with at least two first connecting holes 11; the bracket 2 is installed on the upper end of the column 1, the bracket 2 includes a U-shaped frame 21, and the side of the U-shaped frame 21 near the road is provided with a wing plate 22; the U-shaped frame 21 is provided with an adjustment groove 23 and a second connecting hole 24, and the left end of the adjustment groove 23 and the second connecting hole 24 are collinear in the vertical direction; The corrugated guardrail 3 is installed on one side of the wing plate 22; the fastener 4 is used to connect and secure the bracket 2 to the column 1, and the bracket 2 to the corrugated guardrail 3; Before the road surface is hardened, slide the bracket 2 along the adjustment groove 23 to the side away from the road surface, install the fastener 4 in the adjustment groove 23, and after the road surface is hardened, loosen the fastener 4 in the adjustment groove 23, push the bracket 2 along the adjustment groove 23 to the side closer to the road surface, install another fastener 4 in the second connection hole 24, and tighten the two fasteners 4.

[0044] like Figure 13 As shown, the horizontal distance between the two ends of the adjustment groove 23 is between 100mm and 200mm, that is, the clearance distance a between the corrugated guardrail 3 and the inner side of the curbstone 5 is equal to 100mm-200mm; this clearance distance meets the construction space requirements of equipment such as pavers and rollers on the roadside, and avoids collisions or scratches between the equipment and the corrugated guardrail 3.

[0045] like Figure 5 , Figure 6 As shown, the adjusting groove 23 is arranged inclined towards the lower part of the side closer to the road surface, and when the bracket 2 slides along the adjusting groove 23 to the leftmost end, the lower edge of the U-shaped frame 21 is flush with the upper end of the first connecting hole 11. After the bracket 2 slides to the leftmost end, fasteners 4 are installed in both the adjusting groove 23 and the second connecting hole 24, as shown. Figure 13 As shown, the fastener 4 in the first connecting hole 11 supports the lower edge of the U-shaped frame 21; after the road surface is hardened, the fastener 4 in the first connecting hole 11 is removed, and the fastener 4 in the adjustment groove 23 is loosened. The bracket 2 automatically resets under its own weight and the guiding action of the tilt adjustment groove 23, so that the second connecting hole 24 is aligned with the first connecting hole 11. Then, the fastener 4 is reinstalled in the aligned hole, and the fastener 4 in the adjustment groove 23 is tightened at the same time.

[0046] In this solution, during the temporary installation phase, the rigid support of the lower edge of the U-shaped frame 21 by the fastener 4 in the first connecting hole 11, combined with the fixation of the fastener 4 in the adjustment groove 23, forms a double constraint, which improves the structural stability of the temporary installation of the guardrail. In addition, after the road surface is hardened, only the fastener 4 needs to be easily disassembled and reassembled, and the bracket 2 can automatically reset by its own weight and the tilting guidance of the adjustment groove 23. There is no need for manual adjustment of the hole alignment, which simplifies the operation steps, reduces the labor intensity, and improves the construction efficiency of the formal fixing of the guardrail.

[0047] like Figure 5 , Figure 8 As shown, the U-shaped frame 21 has a first limiting plate 25 on the side near the wing plate 22. When the bracket 2 moves to the leftmost end, the right side of the column 1 is pressed against the first limiting plate 25; Figure 6 , Figure 9 As shown, the U-shaped frame 21 is provided with at least one second limiting plate 26 on the side away from the wing plate 22. When the bracket 2 moves to the rightmost end, the left side of the column 1 is pressed against the second limiting plate 26.

[0048] The first limiting plate 25 and the second limiting plate 26 correspond to the leftmost and rightmost extreme positions of the bracket 2's movement, respectively. When the bracket 2 slides to the corresponding extreme position, the side of the column 1 is tightly fitted with the limiting plate, forming a rigid limiting constraint. This prevents the bracket 2 from exceeding the preset movement range due to construction disturbances, self-weight slippage, etc., and avoids structural deformation or damage to the adjusting groove 23, connecting hole, and fastener 4 due to excessive displacement. In addition, the limiting effect of the first limiting plate 25 and the second limiting plate 26 ensures the alignment accuracy between the second connecting hole 24 and the first connecting hole 11.

[0049] like Figure 4 As shown, the column 1 has a first screw 12 on one side and a second screw 13 on the other side, with a locking nut threaded onto one of the first screw 12 and the second screw 13; it also includes a filling frame 6, such as... Figure 7 As shown, the filling rack 6 is a box-type structure with an open bottom. The side wall of the filling rack 6 is provided with an opening slot 61 that matches the first screw 12 and the second screw 13. Figure 9 As shown, when the bracket 2 moves to the leftmost end, the filling frame 6 is fitted onto the outside of the first screw 12 through the opening slot 61, and the locking nut is tightened onto the first screw 12 to lock and fix the filling frame 6. At this time, the left end face of the filling frame 6 abuts against the second limiting plate 26; Figure 8As shown, when the bracket 2 moves to the rightmost end, the filling frame 6 is fitted onto the outside of the second screw 13 through the opening slot 61, and the locking nut is tightened onto the second screw 13 to lock and fix the filling frame 6. At this time, the right end face of the filling frame 6 abuts against the first limiting plate 25; the filling frame 6 abuts against the column 1 and the first limiting plate 25 or the second limiting plate 26 and forms a rigid support for the bracket 2, further ensuring the stability of the bracket 2 installation; the upper end face of the filling frame 6 is a slope, which facilitates the rapid discharge of rainwater and other dirt.

[0050] like Figure 12 As shown, the fastener 4 includes a bolt 41, one end of which is a smooth arc surface. A washer 45 is provided on the bolt 41. A sleeve 43 is coaxially sleeved on one side of the washer 45 outside the bolt 41. The other end of the bolt 41 is threadedly connected to a fastening nut 42. The fastening nut 42 is an octagonal nut or a pentagonal nut, so that the fastener 4 constitutes an anti-theft structure.

[0051] In this solution, the fastening nut 42 adopts a non-standard octagonal or pentagonal structure, which requires special disassembly and assembly tools to operate. Compared with the conventional hexagonal nut, it can effectively prevent unauthorized personnel from disassembling the fastener 4 at will, avoid the failure of the installation structure of the guardrail due to human theft or damage, and ensure the structural integrity and protective effectiveness of the guardrail during the construction and formal use stages.

[0052] like Figure 12 As shown, a spring 44 is sleeved on the outside of the bolt 41. One end of the spring 44 abuts against the washer 45, and the other end abuts against the fastening nut 42. After the fastening nut 42 is tightened, the spring 44 is in a compressed state and generates an elastic preload force, which continuously acts on the fastening nut 42.

[0053] The elastic restoring force of the spring 44 forms a preload that continuously acts on the fastening nut 42, which can effectively offset the gap in the bolt 41 connection caused by road vehicle traffic, natural vibration, temperature deformation, etc., and prevent the fastening nut 42 from loosening or stripping. This achieves long-term anti-loosening locking of the fastener 4 and ensures the reliability of the connection structure of the guardrail during long-term use.

[0054] like Figure 10 As shown, according to a second aspect of the present invention, a reset device is provided for resetting the aforementioned adjustable corrugated beam guardrail, comprising a base 7 placed on a curbstone 5, as shown. Figure 11 As shown, a fixing block 73 is provided on one side of the base 7, and a support leg 74 is threadedly connected to the fixing block 73. The support leg 74 is used to level the base 7 and enhance the stability of the base 7. The base 7 is equipped with a lifting cylinder 72 on its upper part. The piston rod end of the lifting cylinder 72 is connected to a lifting frame 8. The lower end of the corrugated guardrail 3 is placed on the upper part of the lifting frame 8. When the corrugated beam guardrail is reset, after removing the fastener 4 in the first connecting hole 11, the piston rod of the lifting cylinder 72 is controlled to slowly retract, which drives the corrugated beam and bracket 2 to slowly reset. This avoids the deformation of the adjusting groove 23 caused by the impact force generated by the bracket 2's sudden and rapid reset due to its own weight, and at the same time prevents the column 1 from shaking or tilting due to impact.

[0055] like Figure 11 As shown, a fixed buckle plate 75 is fixedly connected to one end of the base 7, and a movable buckle plate 76 is provided on one side of the fixed buckle plate 75. The fixed buckle plate 75 and the movable buckle plate 76 are detachably connected by fastening bolts 41. The fixed buckle plate 75 and the movable buckle plate 76 together form a clamping cavity that is adapted to the column 1. The fixed buckle plate 75 and the movable buckle plate 76 are sleeved on the outside of the column 1 and locked and fixed by fastening bolts 41, which further improves the installation stability of the resetting device during operation.

[0056] like Figure 11 As shown, the base 7 has several guide slopes 71 on both sides, and the inclination angle of the guide slopes 71 is equal to the inclination angle of the adjustment groove 23. The guide slopes 71 have limiting grooves arranged along their extension direction. The lower part of the lifting frame 8 is provided with a moving wheel 81, which is embedded in the limiting groove and can slide along it, thus preventing the lifting frame 8 from tipping over, derailing or deviating when it moves along the guide slopes 71, and ensuring the stability of the lifting frame 8's sliding. The lower end of the cylinder seat of the lifting cylinder 72 is pivotally connected to the base 7, and the upper end of the piston rod of the lifting cylinder 72 is pivotally connected to the lower part of the lifting frame 8. When the lifting cylinder 72 extends or retracts, the lifting frame 8 moves along the guide slopes 71, and the moving displacement of the lifting frame 8 is consistent with the moving displacement of the bracket 2, thus preventing friction between the corrugated guardrail 3 and the lifting frame 8 from causing scratches on the paint surface of the corrugated guardrail 3.

[0057] The principle of this invention is as follows: Before the road surface is hardened, the guardrail is temporarily installed. The U-shaped frame 21 of the bracket 2 is installed on the upper end of the column 1 and slids away from the road surface to the leftmost end along the inclined adjustment groove 23. At this time, the right side of the column 1 is tightly attached to the first limiting plate 25 on the bracket 2, realizing the rigid limitation of the bracket 2's movement. After the bracket 2 slides, it forms a clearance distance of 100mm-200mm, which meets the roadside working space of pavers, rollers and other road construction equipment, and avoids collision and scratching between the equipment and the corrugated guardrail 3.

[0058] Fasteners 4 are installed in the first connecting hole 11 of the column 1 and the adjusting groove 23 of the bracket 2 respectively. The fasteners 4 in the first connecting hole 11 directly support the lower edge of the U-shaped frame 21, and the fasteners 4 in the adjusting groove 23 are fixed together to form a double constraint on the bracket 2 to prevent the bracket 2 from slipping.

[0059] The filling frame 6 is fitted onto the outside of the first screw 12 of the column 1 through the side wall opening slot 61, and the locking nut is tightened to fix the filling frame 6. At this time, the left end face of the filling frame 6 abuts against the second limiting plate 26, forming a rigid fit with the column 1 and the bracket 2, further supporting the bracket 2 and completely eliminating the shaking and displacement of the bracket 2 caused by construction disturbance.

[0060] Fix the corrugated guardrail 3 to one side of the wing plate 22 of the bracket 2 to complete the temporary installation of the guardrail. At this time, the guardrail is in a position away from the road surface and will not affect the subsequent road hardening construction.

[0061] like Figure 13 As shown, after the road surface is hardened, the base 7 of the reset device is placed on the curb stone 5, and the support leg 74 on the fixing block 73 on one side of the base 7 is adjusted to complete the horizontal leveling of the base 7; then the fixed buckle plate 75 and the movable buckle plate 76 at one end of the base 7 are fitted together and placed on the outside of the column 1, and the fastening bolt 41 is tightened to complete the buckle plate locking, so that the reset device and the column 1 form an integrated rigid connection, preventing the base 7 from slipping or tipping over during hydraulic operation.

[0062] Remove the filling frame 6 from the outside of the first screw 12, and fit it onto the outside of the second screw 13 of the column 1. Tighten the locking nut to complete the fixation. At this time, the right end face of the filling frame 6 abuts against the first limiting plate 25, forming a rigid support for the bracket 2 at its formal installation position.

[0063] Loosen the fastener 4 in the adjusting groove 23 and remove the fastener 4 from the first connecting hole 11 on the column 1. Then, control the piston rod of the lifting cylinder 72 to slowly retract. Due to the double pivot design of the lifting cylinder 72, the lifting frame 8 slides smoothly along the guide slope 71 with the same inclination angle as the adjusting groove 23 when the piston rod retracts. Figure 14 As shown, the lower moving wheel 81 of the lifting frame 8 rolls along the limiting groove until the second connecting hole 24 of the bracket 2 is aligned with the first connecting hole 11 of the column 1. The fastener 4 is reinstalled in the aligned first connecting hole 11 and second connecting hole 24, and the fastener 4 in the adjusting groove 23 is tightened at the same time, forming a double fixation for the bracket 2 again. The preload of the spring 44 of the fastener 4 and the anti-theft function of the non-standard nut continue to be effective, ensuring the anti-loosening and anti-theft effect of the fastener 4 for long-term use.

[0064] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An adjustable corrugated beam guardrail, comprising: The column has at least two first connecting holes at its upper end; A bracket, installed on the upper end of a column, the bracket includes a U-shaped frame, and a wing plate is provided on the side of the U-shaped frame closer to the road; characterized in that the U-shaped frame is provided with an adjustment groove and a second connecting hole, and the left end of the adjustment groove and the second connecting hole are collinear in the vertical direction; A corrugated guardrail is installed on one side of the wing plate; Fasteners used to connect and secure brackets to posts, and brackets to corrugated guardrails; Before the road surface is hardened, slide the bracket along the adjustment groove to the side away from the road surface, install the fastener in the adjustment groove, and after the road surface is hardened, loosen the fastener in the adjustment groove, push the bracket along the adjustment groove to the side closer to the road surface, install another fastener in the second connection hole, and tighten both fasteners.

2. The adjustable corrugated beam guardrail according to claim 1, characterized in that, The horizontal distance between the two ends of the adjustment groove is between 100mm and 200mm, that is, the clearance distance 'a' between the corrugated guardrail and the inner side of the curbstone is equal to 100mm-200mm.

3. The adjustable corrugated beam guardrail according to claim 1, characterized in that, The adjustment groove is inclined towards the lower part of the side closer to the road surface, and when the bracket slides along the adjustment groove to the leftmost end, the lower edge of the U-shaped frame is flush with the upper end of the first connecting hole. After the bracket slides to the leftmost end, fasteners are installed in both the adjustment groove and the second connecting hole, wherein the fastener in the first connecting hole supports the lower edge of the U-shaped frame. After the road surface is hardened, remove the fasteners in the first connecting hole and loosen the fasteners in the adjustment groove. The bracket will automatically reset under its own weight and the guiding action of the tilt adjustment groove, so that the second connecting hole is aligned with the first connecting hole. Then, reinstall the fasteners in the aligned hole and tighten the fasteners in the adjustment groove at the same time.

4. An adjustable corrugated beam guardrail according to claim 3, characterized in that, The U-shaped frame has a first limiting plate on the side near the wing plate. When the bracket moves to the leftmost end, the right side of the column is close to the first limiting plate. The U-shaped frame has at least one second limiting plate on the side away from the wing plate. When the bracket moves to the rightmost end, the left side of the column is close to the second limiting plate.

5. An adjustable corrugated beam guardrail according to claim 4, characterized in that, The column has a first screw on one side and a second screw on the other side. A locking nut is threaded onto one of the first and second screws. It also includes a filling frame, which is a box-shaped structure with an open bottom. The side wall of the filling frame has an opening groove adapted to the first and second screws. When the bracket moves to the leftmost end, the filling frame is fitted onto the outside of the first screw through the opening groove, and the locking nut is tightened onto the first screw to lock and fix the filling frame. At this time, the left end face of the filling frame abuts against the second limiting plate. When the bracket moves to the rightmost end, the filling frame is fitted onto the outside of the second screw through the opening groove, and the locking nut is tightened onto the second screw to lock and fix the filling frame. At this time, the right end face of the filling frame abuts against the first limiting plate. The upper end face of the filling frame is a slope.

6. An adjustable corrugated beam guardrail according to claim 1, characterized in that, The fastener includes a bolt, one end of which is a smooth arc surface. A washer is provided on the bolt, and a sleeve is provided on one side of the washer and coaxially fitted outside the bolt. The other end of the bolt is threaded with a fastening nut, and the fastening nut is an octagonal nut or a pentagonal nut, so that the fastener constitutes an anti-theft structure.

7. An adjustable corrugated beam guardrail according to claim 6, characterized in that, A spring is fitted around the bolt. One end of the spring abuts against the washer, and the other end abuts against the fastening nut. After the fastening nut is tightened, the spring is in a compressed state and generates an elastic preload force, which continuously acts on the fastening nut.

8. A reset device for resetting the adjustable corrugated beam guardrail according to any one of claims 1-7, characterized in that, Includes a base, which is placed on a curbstone. A fixing block is provided on one side of the base, and a support leg is threadedly connected to the fixing block. The support leg is used to level the base and enhance the stability of the base. The upper part of the base is equipped with a lifting cylinder, and the piston rod end of the lifting cylinder is connected to a lifting frame. The lower end of the corrugated guardrail is placed on the upper part of the lifting frame.

9. A reset device according to claim 8, characterized in that, A fixed buckle plate is fixedly connected to one end of the base, and a movable buckle plate is provided on one side of the fixed buckle plate. The fixed buckle plate and the movable buckle plate are detachably connected by fastening bolts. The fixed buckle plate and the movable buckle plate together form a clamping cavity that fits the column. The fixed buckle plate and the movable buckle plate are sleeved on the outside of the column and locked and fixed by fastening bolts.

10. A reset device according to claim 8, characterized in that, The base has several guide slopes on both sides, and the inclination angle of the guide slopes is equal to the inclination angle of the adjustment groove. The guide slopes are provided with limiting grooves arranged along their extension direction. The lower part of the lifting frame is provided with moving wheels, which are embedded in the limiting grooves and can slide along them. The lower end of the cylinder seat of the lifting cylinder is pivotally connected to the base, and the upper end of the piston rod of the lifting cylinder is pivotally connected to the lower part of the lifting frame.

Images