Mounting and hoisting device for steel guardrails at transition sections of zoning roads and bridges in expressways and construction method of mounting and hoisting device

Abstract

The invention discloses an expressway zoning road and bridge transition section steel guardrail mounting and hoisting device and a construction method.The steel guardrail mounting and hoisting device comprises a bottom plate, a first support and a hanging bracket, a limiting hole is formed in the left end of the bottom plate, a supporting column is inserted into the limiting hole, and a guide frame is arranged at the left end of the supporting column; a displacement base is slidably connected to the upper portion of the bottom plate and located above the limiting hole, a first support is rotatably connected to the upper portion of the displacement base, a first wire guide wheel is arranged below the front end of the first support, a pull rope is arranged on the first wire guide wheel, and a hanging bracket is arranged at the left end of the pull rope. The lifting frame is arranged on the first support, corrugated plates in a warehouse can be rapidly lifted to the outside of the warehouse, the guide frame is arranged at the left end of the supporting column, workers can conveniently and rapidly convey the corrugated plates to the ground, the working efficiency is improved, the personnel investment is reduced, the construction period is shortened, use is convenient, and operation is easy.

Description

Technical Field

[0001] The invention relates to a corrugated plate hoisting device, in particular to a construction method for installing a steel guardrail hoisting device in a highway median bridge transition section, and belongs to the technical field of road guardrail installation. Background Art

[0002] The highway corrugated guardrail is a continuous structure made of corrugated steel guardrail panels spliced ​​together and supported by main columns. It uses the deformation of the soil foundation, columns, and beams to absorb collision energy, and forces out-of-control vehicles to change direction and return to their normal driving direction, preventing vehicles from running off the road, thereby protecting vehicles and passengers and reducing losses caused by accidents. The highway corrugated guardrail is both steel and flexible, has a strong ability to absorb collision energy, has a good line of sight induction function, can be coordinated with the road line shape, and has a beautiful appearance.

[0003] When replacing the guardrails on the highway, it is necessary to first remove the original two 13m corrugated beam guardrails, and then install a 3m wing-free wall, an 8m corrugated beam guardrail, and a 2m TRB transition plate. The two ends of the guardrail are respectively connected to the roadbed guardrail and the bridge guardrail, and a continuous structure supported by columns is formed to protect vehicles and passengers and reduce injuries caused by accidents. When installing the existing guardrails, manual transportation is often used to move the guardrails from the cargo hold of the vehicle to the installation location. This method is time-consuming, labor-intensive, inefficient, and requires a large amount of manpower during construction, which not only increases the construction cost, but also prolongs the construction period. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a steel guardrail installation and lifting device and a construction method for the transition section of the median bridge of a highway, which is convenient for work to quickly move the corrugated plate guardrail to the installation position, reduce manpower input, improve work efficiency, and is easy to use and simple to operate.

[0005] The technical solution adopted by the present invention to solve the technical problem is: A device for installing and hoisting a steel guardrail in a transition section of a highway median bridge comprises a base plate, a first bracket and a hanger. A limiting hole is arranged at the left end of the base plate, a pillar is inserted in the limiting hole, a guide rack is arranged at the left end of the pillar, a displacement base is slidably connected to the top of the base plate, and the displacement base is located above the limiting hole, a first bracket is rotatably connected to the top of the displacement base, a first guide wheel is arranged below the front end of the first bracket, a pull rope is arranged on the first guide wheel, and a hanger is arranged at the left end of the pull rope.

[0006] The support column is fixedly connected with the limiting hole through bolts, and the left end of the support column is connected with the limiting screw rod through threads.

[0007] The displacement base is distributed in a U-shape, displacement tracks are arranged on both sides of the bottom plate, and the displacement base is slidably connected with the displacement tracks through a slider.

[0008] A through hole is dug in the middle of the first bracket, a second wire pulley is arranged below the through hole, the second wire pulley is fixed in the middle of the right side of the first bracket, the right end of the pull rope passes through the through hole and is wound around the outside of the second wire pulley.

[0009] The hanger consists of a second bracket, a connecting column, a first displacement sleeve and a hook. A connecting column is provided at the lower end of the second bracket. Two first displacement sleeves are slidably connected to the connecting column, and a tightening bolt is provided on the first displacement sleeve. A hook is connected to the bottom of the first displacement sleeve through an extension column.

[0010] A plug hole is dug at the left end of the bottom plate, a plug plate is inserted into the plug hole, a tightening bolt is arranged at the bottom of the plug plate, and the plug plate is fixedly connected with the bottom plate through the bolt.

[0011] The guide rack is composed of a second displacement sleeve, a guide plate and a roller. The second displacement sleeve is sleeved on the pillar and fixedly connected to the pillar by bolts. Guide plates are respectively arranged on both sides of the second displacement sleeve, and a support plate is arranged between the two guide plates. A roller is arranged at the bottom of the right end of the guide plate, and a guide wheel is arranged on the upper end surface of the guide plate.

[0012] The construction method of the steel guardrail installation hoisting device for the transition section of the highway median bridge comprises the following steps: S1. Prepare the tools needed for construction, dismantle the original two corrugated guardrails and columns, and remove the columns by pulling them out. Do not use brute force or cutting when dismantling the center guardrail; S2. According to the pile number of the construction site and the requirements of the design drawings, determine the position and height of the steel pipe column based on the center line and elevation data, and measure and locate it using bridges, etc. At the same time, investigate whether there are underground pipeline facilities at the location of the column; S3. Check whether the longitudinal, transverse and vertical sections of the column meet the requirements; the column located on the earth roadbed shall be constructed by driving method, and a scale indicating the driving depth shall be marked on the surface of the column; after the column is installed in place, its horizontal and vertical directions shall form a smooth line, and the end of the column shall not have obvious deformation or damage; S4. Load the corrugated plates to be installed onto the truck and install the lifting device in the middle of the cargo hold. First, place the bottom plate in the middle of the cargo hold, and pull the plug plate at the left end of the bottom plate to clamp the plug plate at the left end of the cargo hold, and finally fix it to the bottom of the cargo hold with the tightening bolts. S5. Insert a support column into the limiting hole and fix it with bolts outside the limiting hole; then install the left end of the support column to the rack, and install a limiting screw at the end of the support column; S6. The truck moves slowly along the construction section. At the same time, the corrugated sheet in the truck is lifted by the hanger and sent to the guide rack. Finally, the corrugated sheet moves down to the ground along the guide wheel on the top of the guide rack. S7. The ground staff lifts the corrugated plate and prepares for the next step of installation. When installing the guardrail plate, it is connected to each other through splicing bolts. The overlapping direction of the guardrail plate should be consistent with the driving direction. And install the anti-blocking block between the guardrail plate and the column. S8. According to the construction requirements, mark the installation position of the contour mark on the corrugated plate and install the contour mark. After the installation is completed, remove the garbage generated during the construction; S9. Stick reflective film on the pillars. The color and spacing of the reflective film on the pillars should be consistent with the contour marks. The dimensions are 200mm high and 100mm wide. The height of the bottom of the reflective film from the road surface is 224mm.

[0013] The positive beneficial effects of the present invention are: 1. The present invention can assist workers to quickly lift and move the corrugated plates to the construction site by installing a lifting device in the cargo hold of the traveling crane, and complete the lowering construction of the corrugated plates along the way as the traveling crane moves, thereby improving work efficiency, reducing manpower input, and reducing construction costs.

[0014] 2. The present invention is equipped with a displacement base that is slidably connected to the bottom plate. In combination with the use of a hanger, the corrugated plate in the vehicle can be lifted and moved to the outside of the cargo hold. At the same time, guide wheels are provided on the top of the corrugated plate to facilitate the movement of the corrugated plate. Rollers are provided at the bottom of the guide plate to facilitate the movement of the guide rack as the vehicle travels. The present invention is easy to use and simple to operate.

[0015] 3. The present invention sets a pull rope outside the first guide wheel and the second guide wheel, and the corrugated plate can be lifted and lowered by pulling the pull rope. By setting two first displacement sleeves on the connecting column, the distance between the two first displacement sleeves can be freely adjusted according to the width of the corrugated plate, which is convenient for accurately grabbing the corrugated plate and ensuring the safety and stability of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a usage state diagram of the present invention; Figure 2 It is a structural schematic diagram of the bottom plate and the hanger of the present invention; Figure 3 It is a structural schematic diagram of the guide rack of the present invention; Among them: 1-bottom plate, 2-jack, 3-plug plate, 4-tightening bolt, 5-displacement base, 6-first bracket, 7-first wire wheel, 8-second wire wheel, 9-through hole, 10-pull rope, 11-second bracket, 12-connecting column, 13-first displacement sleeve, 14-extension column, 15-hook, 16-limiting hole, 17-pillar, 18-limiting screw, 19-second displacement sleeve, 20-guide plate, 21-support plate, 22-roller, 23-wire wheel, A-cargo warehouse, B-corrugated plate. DETAILED DESCRIPTION

[0017] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings: Embodiment 1, a lifting device for installing a steel guardrail in a transition section of a highway median bridge, comprises a base plate 1, a first bracket 6 and a hanger, a limiting hole 16 is provided at the left end of the base plate 1, a pillar 17 is inserted in the limiting hole 16, a guide rack is provided at the left end of the pillar 17, a displacement base 5 is slidably connected above the base plate 1, and the displacement base 5 is located above the limiting hole 16, a first bracket 6 is rotatably connected above the displacement base 5, a first wire wheel 7 is provided below the front end of the first bracket 6, a pull rope 10 is provided on the first wire wheel 7, and a hanger is provided at the left end of the pull rope 10.

[0018] The support column 17 is fixedly connected to the limiting hole 16 by bolts, and a limiting screw rod 18 is threadedly connected to the left end of the support column 17 .

[0019] The displacement base 5 is distributed in a U-shape, and displacement tracks are arranged on both sides of the bottom plate 1 . The displacement base 5 is slidably connected with the displacement tracks through a slider.

[0020] A through hole 9 is dug in the middle of the first bracket 6, and a second wire pulley 8 is arranged below the through hole 9. The second wire pulley 8 is fixed in the middle of the right side of the first bracket 6. The right end of the pull rope 10 passes through the through hole 9 and is wrapped around the outside of the second wire pulley 8.

[0021] The hanger consists of a second bracket 11, a connecting column 12, a first displacement sleeve 13 and a hook 15. A connecting column 12 is provided at the lower end of the second bracket 11. Two first displacement sleeves 13 are slidably connected to the connecting column 12, and a tightening bolt is provided on the first displacement sleeve 13. The hook 15 is connected to the lower part of the first displacement sleeve 13 through an extension column 14.

[0022] A plug hole 2 is dug at the left end of the bottom plate 1, and a plug plate 3 is inserted into the plug hole 2. A tightening bolt is provided at the bottom of the plug plate 3, and the plug plate 3 is fixedly connected to the bottom plate 1 through the bolt.

[0023] The guide rack is composed of a second displacement sleeve 19, a guide plate 20 and a roller 22. The second displacement sleeve 19 is sleeved on the pillar 17, and the second displacement sleeve 19 is fixedly connected to the pillar 17 by bolts. Guide plates 20 are respectively arranged on both sides of the second displacement sleeve 19, and a support plate 21 is arranged between the two guide plates 20. A roller 22 is arranged at the bottom of the right end of the guide plate 20, and a guide wheel 23 is arranged on the upper end surface of the guide plate 20.

[0024] In the above description, the displacement base is distributed in a U-shape, the displacement base can move horizontally along the bottom plate, and the displacement base is higher than the limiting hole and is located above the limiting hole.

[0025] In the above description, a tightening bolt is arranged on the outside of the first displacement sleeve for fixing the first displacement sleeve and the connecting column.

[0026] In the above description, a support is provided on the top of the displacement base, the first bracket is rotatably connected to the support, and the first bracket is distributed in an L shape, a first wire wheel is provided at the front end of the first bracket, and a second wire wheel is provided on the right side of the middle of the first bracket, and the pull rope is passed around the first wire wheel and the second wire wheel in turn.

[0027] In the above description, the top of the hook is hinged to the extension column, and the two hooks are symmetrically distributed.

[0028] In the above description, a threaded hole is dug at the left end of the support column, and the limiting screw is connected to the threaded hole through a thread.

[0029] Embodiment 2, the construction method of the above-mentioned highway median bridge transition section steel guardrail installation hoisting device comprises the following steps: S1. Prepare the tools needed for construction, dismantle the original two corrugated guardrails and columns, and remove the columns by pulling them out. Do not use brute force or cutting when dismantling the center guardrail; S2. According to the pile number of the construction site and the requirements of the design drawings, determine the position and height of the steel pipe column based on the center line and elevation data, and measure and locate it using bridges, etc. At the same time, investigate whether there are underground pipeline facilities at the location of the column; S3. Check whether the longitudinal, transverse and vertical sections of the column meet the requirements; the column located on the earth roadbed shall be constructed by driving method, and a scale indicating the driving depth shall be marked on the surface of the column; after the column is installed in place, its horizontal and vertical directions shall form a smooth line, and the end of the column shall not have obvious deformation or damage; S4, load the corrugated sheet to be installed on the truck, and install the lifting device in the middle of the cargo hold, first place the bottom plate 1 in the middle of the cargo hold, and pull the plug plate 3 at the left end of the bottom plate 1, and clamp the plug plate 3 at the left end of the cargo hold, and finally fix it to the bottom of the cargo hold by tightening bolts 4; S5, insert the support 17 into the limiting hole 16, and fix it with bolts outside the limiting hole 16; then install the left end of the support 17 to the rack, and install the limiting screw 18 at the end of the support 17; S6. The truck moves slowly along the construction section. At the same time, the corrugated sheet in the truck is lifted by the hanger and sent to the guide rack. Finally, the corrugated sheet moves down to the ground along the guide wheel on the top of the guide rack. S7. The ground staff lifts the corrugated plate and prepares for the next step of installation. When installing the guardrail plate, it is connected to each other through splicing bolts. The overlapping direction of the guardrail plate should be consistent with the driving direction. And install the anti-blocking block between the guardrail plate and the column. S8. According to the construction requirements, mark the installation position of the contour mark on the corrugated plate and install the contour mark. After the installation is completed, remove the garbage generated during the construction; S9. Stick reflective film on the pillars. The color and spacing of the reflective film on the pillars should be consistent with the contour marks. The dimensions are 200mm high and 100mm wide. The height of the bottom of the reflective film from the road surface is 224mm.

[0030] In the above description, after the guardrail panels are replaced and the line shape is adjusted, all guardrail panel ancillary facilities should be completed, and the necessary guardrail ancillary facilities (bolts, contour marks and reflective film) must not be missing; the replaced guardrail panels should have smooth lines and consistent color.

[0031] In the above description, the height of the corrugated beam guardrail should meet the requirements of the specification: the center height of the two-corrugated beam is 600mm, the center height of the three-corrugated beam is not less than 697mm or other heights required by the design documents.

[0032] In the above description, the guardrail beam height refers to the height of the guardrail center from the design reference line, with the intersection of the guardrail surface and the road surface as the design reference line. If there is a curb near the direction of traffic flow on the guardrail surface, and the left side of the curb does not overlap with the guardrail surface, the beam height should also add the height of the curb.

[0033] In the above description, the overlapping direction of the corrugated beam guardrail plate should be correct, the overlapping should be smooth, the washers should be complete, and the bolts should be tightened.

[0034] The present invention can quickly hoist the corrugated plate in the cargo hold to the outside of the cargo hold by arranging a hanger on the first bracket, and can facilitate workers to quickly transport the corrugated plate to the ground by arranging a guide rack at the left end of the pillar, thereby improving work efficiency, reducing manpower input, shortening the construction period, and being easy to use and simple to operate.

Claims

1. A device for installing and hoisting a steel guardrail at a transition section of a highway median bridge, comprising a base plate (1), a first bracket (6) and a hanger, characterized in that: A limiting hole (16) is provided at the left end of the bottom plate (1), a pillar (17) is inserted into the limiting hole (16), a guide rack is provided at the left end of the pillar (17), a displacement base (5) is slidably connected to the top of the bottom plate (1), and the displacement base (5) is located above the limiting hole (16), a first bracket (6) is rotatably connected to the top of the displacement base (5), a first guide wheel (7) is provided below the front end of the first bracket (6), a pull rope (10) is provided on the first guide wheel (7), and a hanger is provided at the left end of the pull rope (10).

2. The installation and hoisting device for the steel guardrail of the highway median bridge transition section according to claim 1 is characterized by: The support column (17) is fixedly connected to the limiting hole (16) via bolts, and the left end of the support column (17) is threadedly connected to the limiting screw rod (18).

3. The installation and hoisting device for the steel guardrail of the highway median bridge transition section according to claim 1 is characterized by: The displacement base (5) is distributed in a U-shape, displacement tracks are arranged on both sides of the bottom plate (1), and the displacement base (5) is slidably connected to the displacement tracks via a slider.

4. The installation and hoisting device for the steel guardrail of the highway median bridge transition section according to claim 1 is characterized by: A through hole (9) is dug in the middle of the first bracket (6), a second wire pulley (8) is arranged below the through hole (9), the second wire pulley (8) is fixed in the middle of the right side of the first bracket (6), the right end of the pull rope (10) passes through the through hole (9) and is wound around the outside of the second wire pulley (8).

5. The installation and hoisting device for steel guardrail of the highway median bridge transition section according to claim 1 is characterized by: The hanger is composed of a second bracket (11), a connecting column (12), a first displacement sleeve (13) and a hook (15); a connecting column (12) is provided at the lower end of the second bracket (11); two first displacement sleeves (13) are slidably connected to the connecting column (12); a tightening bolt is provided on the first displacement sleeve (13); and a hook (15) is hingedly connected to the lower part of the first displacement sleeve (13) via an extension column (14).

6. The installation and hoisting device for the steel guardrail of the highway median bridge transition section according to claim 1 is characterized by: A plug hole (2) is dug at the left end of the bottom plate (1), a plug plate (3) is inserted into the plug hole (2), a tightening bolt is provided at the bottom of the plug plate (3), and the plug plate (3) is fixedly connected to the bottom plate (1) by the bolt.

7. The installation and hoisting device for the steel guardrail of the highway median bridge transition section according to claim 1 is characterized by: The guide rack is composed of a second displacement sleeve (19), a guide plate (20) and a roller (22); the second displacement sleeve (19) is sleeved on the pillar (17), and the second displacement sleeve (19) is fixedly connected to the pillar (17) by bolts; guide plates (20) are respectively arranged on both sides of the second displacement sleeve (19), and a support plate (21) is arranged between the two guide plates (20); a roller (22) is arranged at the bottom of the right end of the guide plate (20), and a guide wheel (23) is arranged on the upper end surface of the guide plate (20).

8. The construction method of the steel guardrail installation hoisting device for the transition section of the highway median bridge according to any one of claims 1 to 7 is characterized in that: The steps include: S1. Prepare the tools needed for construction, dismantle the original two corrugated guardrails and columns, and remove the columns by pulling them out. Do not use brute force or cutting when dismantling the center guardrail; S2. According to the pile number of the construction site and the requirements of the design drawings, determine the position and height of the steel pipe column based on the center line and elevation data, and measure and locate it using bridges, etc. At the same time, investigate whether there are underground pipeline facilities at the location of the column; S3. Check whether the longitudinal, transverse and vertical sections of the column meet the requirements; the column located on the earth roadbed shall be constructed by driving method, and a scale indicating the driving depth shall be marked on the surface of the column; after the column is installed in place, its horizontal and vertical directions shall form a smooth line, and the end of the column shall not have obvious deformation or damage; S4. Load the corrugated sheet to be installed onto the truck and install the lifting device in the middle of the cargo hold. First, place the bottom plate (1) in the middle of the cargo hold, pull the plug plate (3) at the left end of the bottom plate (1), and clamp the plug plate (3) at the left end of the cargo hold. Finally, fix it to the bottom of the cargo hold by tightening bolts (4); S5, inserting a support (17) into the limiting hole (16) and fixing it with a bolt outside the limiting hole (16); then installing the left end of the support (17) to the rack, and installing a limiting screw (18) at the end of the support (17); S6. The truck moves slowly along the construction section. At the same time, the corrugated sheet in the truck is lifted by the hanger and sent to the guide rack. Finally, the corrugated sheet moves down to the ground along the guide wheel on the top of the guide rack. S7. The ground staff lifts the corrugated plate and prepares for the next step of installation. When installing the guardrail plate, it is connected to each other through splicing bolts. The overlapping direction of the guardrail plate should be consistent with the driving direction. And install the anti-blocking block between the guardrail plate and the column. S8. According to the construction requirements, mark the installation position of the contour mark on the corrugated plate and install the contour mark. After the installation is completed, remove the garbage generated during the construction; S9. Stick reflective film on the pillars. The color and spacing of the reflective film on the pillars should be consistent with the contour marks. The dimensions are 200mm high and 100mm wide. The height of the bottom of the reflective film from the road surface is 224mm.

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