Guardrail for road and bridge construction

Abstract

The application discloses a guardrail for road and bridge construction, which comprises a fixed guardrail and a movable guardrail, a butt joint groove is formed in the right end of the fixed guardrail, a fixed gear is fixedly installed in the middle of the butt joint groove through screws, the movable guardrail is placed on the right side of the fixed guardrail, a baffle, a through groove, a fixed rack and an L-shaped support are arranged on the movable guardrail, the baffle is integrally connected to the upper and lower sides of the left end of the movable guardrail and is nested in the butt joint groove, the through groove is formed in the left side of the front end of the movable guardrail, the fixed rack is fixedly installed in the middle of the left side of the inside of the movable guardrail through screws, and the L-shaped support is placed on the left end of the inside of the movable guardrail. The guardrail can be easily lifted during the construction and maintenance of the road and bridge.

Description

Technical Field

[0001] This invention relates to a guardrail for road and bridge construction, belonging to the field of road and bridge guardrail technology. Background Technology

[0002] Road and bridge guardrails can easily divide roads into left and right sections, facilitating vehicle passage. However, the guardrails currently in use are fixed installations. When road construction vehicles need to use the road, the guardrails must be removed and then replaced later, which not only affects construction efficiency but also significantly increases construction costs. To solve these problems, a new technical solution is provided. Summary of the Invention

[0003] The purpose of this invention is to provide a guardrail for road and bridge construction to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a guardrail for road and bridge construction, comprising a fixed guardrail and a movable guardrail. The fixed guardrail has a connecting groove at its right end, and a fixed gear is fixedly installed in the middle of the connecting groove by screws. The movable guardrail is placed to the right of the fixed guardrail and is provided with a baffle, a through groove, a fixed rack, and an L-shaped bracket. The baffle is integrally formed and connected to the upper and lower left ends of the movable guardrail, and the baffle is nested in the connecting groove. The through groove is opened on the left side of the front end of the movable guardrail. The fixed rack is fixedly installed in the upper middle left side of the movable guardrail by screws. The L-shaped bracket is placed at the left end of the movable guardrail.

[0005] Preferably, the left end of the L-shaped bracket is placed to the left of the fixed gear. The L-shaped bracket is provided with a first rack, a support frame and a U-shaped frame. The first rack is fixed to the top of the L-shaped bracket by screws and is meshed with the fixed gear. The support frame is symmetrically fixed to the front and rear ends of the right side of the L-shaped bracket by screws. The U-shaped frame is placed above the right side of the L-shaped bracket.

[0006] Preferably, a movable gear is connected to the upper inner side of the support frame via a bearing through an interference fit. The movable gear meshes with a fixed rack. The main shaft of the movable gear passes through the support frame and extends into the through slot. A first hexagonal hole is provided in the middle of the main shaft of the movable gear.

[0007] Preferably, the inner top wall of the U-shaped frame is slidably connected to the top wall of the fixed rack, and a second rack is fixedly installed on the inner bottom of the U-shaped frame by screws, and the second rack is meshed with the movable gear.

[0008] Preferably, a power frame is placed on the outside of the through groove. The power frame is fixedly connected to the outer wall of the movable guardrail by screws. The upper and lower ends of the power frame are integrally formed with rails. A T-shaped slide groove is opened at the front end of the rails, and a T-shaped slider is slidably connected on the T-shaped slide groove.

[0009] Preferably, the front end of the T-shaped slider is integrally connected to a transmission frame, the transmission frame is provided with a locking frame and a transmission shaft, the locking frame is welded to the upper front end of the transmission frame, a positioning pin is slidably connected in the middle of the locking frame, and the transmission shaft is interference-fitted to the middle of the transmission frame through a bearing.

[0010] Preferably, the drive shaft is provided with positioning teeth and a second hexagonal hole. The positioning teeth are integrally formed and connected to the outer side of the front end of the drive shaft, and the second hexagonal hole is opened in the middle of the drive shaft.

[0011] Preferably, the second hexagonal hole is symmetrical in size and position to the first hexagonal hole, and a hexagonal prism is nested on the second hexagonal hole, with a crank handle fixed to the outer end of the hexagonal prism by screws.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: A crank handle is fixed to the outer end of the hexagonal column by screws, allowing the hexagonal column to rotate easily; a positioning tooth is integrally formed and connected to the outer front end of the drive shaft, which can cooperate with a positioning pin to lock the drive shaft; a T-shaped slider is slidably connected to the T-shaped groove, allowing the T-shaped slider to slide easily left and right along the T-shaped groove; a movable gear meshes with a fixed rack, allowing the movable gear to move along the fixed rack; In summary, the present invention allows for easy lifting of guardrails during road and bridge construction and maintenance. Attached Figure Description

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

[0014] Figure 2 This is a schematic diagram of the fixed guardrail structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the movable guardrail structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the transmission frame structure of the present invention;

[0017] In the diagram: 1-Fixed guardrail; 2-Modible guardrail; 3-Connecting groove; 4-Fixed gear; 5-Baffle; 6-Through groove; 7-Fixed rack; 8-L-shaped bracket; 9-First rack; 10-Support frame; 11-U-shaped frame; 12-Modible gear; 13-First hexagonal hole; 14-Second rack; 15-Power frame; 16-Rail; 17-T-shaped slide; 18-T-shaped slider; 19-Transmission frame; 20-Locking frame; 21-Transmission shaft; 22-Positioning pin; 23-Positioning tooth; 24-Second hexagonal hole; 25-Hexagonal column; 26-Handle. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] like Figure 1-4 As shown, a guardrail for road and bridge construction includes a fixed guardrail 1 and a movable guardrail 2. The fixed guardrail 1 has a connecting groove 3 at its right end, and a fixed gear 4 is fixedly installed inside the connecting groove 3 by screws. The movable guardrail 2 is placed to the right of the fixed guardrail 1. The movable guardrail 2 is equipped with a baffle 5, a through groove 6, a fixed rack 7, and an L-shaped bracket 8. The baffle 5 is integrally formed and connected to the upper and lower left ends of the movable guardrail 2, and the baffle 5 is nested within the connecting groove 3. The through groove 6 is located on the left front end of the movable guardrail 2. The fixed rack 7 is fixedly installed inside the movable guardrail 2 at the upper middle left side by screws. The L-shaped bracket 8 is placed inside the movable guardrail 2. At the left end of the L-shaped bracket 8, the left end is placed to the left of the fixed gear 4. The L-shaped bracket 8 is equipped with a first rack 9, a support frame 10, and a U-shaped frame 11. The first rack 9 is fixed to the top of the L-shaped bracket 8 with screws, and the first rack 9 meshes with the fixed gear 4. The support frame 10 is symmetrically fixed to the front and rear ends of the right side of the L-shaped bracket 8 with screws. The U-shaped frame 11 is placed above the right side of the L-shaped bracket 8. A movable gear 12 is interference-fitted to the upper inner side of the support frame 10 via a bearing. The movable gear 12 meshes with the fixed rack 7. The main shaft of the movable gear 12 passes through the support frame 10 and extends into the through groove 6. The main shaft of the movable gear 12 has a first hexagonal hole 13 in the middle. The inner top wall of the U-shaped frame 11 is slidably connected to the top wall of the fixed rack 7. The inner bottom of the U-shaped frame 11 is fixed with a second rack 14 by screws. The second rack 14 is meshed with the movable gear 12. A power frame 15 is placed on the outside of the through groove 6. The power frame 15 is fixedly connected to the outer wall of the movable guardrail 2 by screws. The upper and lower ends of the power frame 15 are integrally connected to the rail 16. The front end of the rail 16 has a T-shaped slide groove 17. A T-shaped slider 18 is slidably connected to the T-shaped slide groove 17. The front end of the T-shaped slider 18 is integrally connected to the transmission frame 19. A locking frame 20 and a drive shaft 21 are provided on the 9. The locking frame 20 is welded to the upper front end of the drive frame 19. A positioning pin 22 is slidably connected in the middle of the locking frame 20. The drive shaft 21 is interference-fitted to the middle of the drive frame 19 through a bearing. The drive shaft 21 is provided with a positioning tooth 23 and a second hexagonal hole 24. The positioning tooth 23 is integrally formed and connected to the outer side of the front end of the drive shaft 21. The second hexagonal hole 24 is opened in the middle of the drive shaft 21. The size and position of the second hexagonal hole 24 are symmetrical with those of the first hexagonal hole 13. A hexagonal prism 25 is nested in the second hexagonal hole 24. A crank 26 is fixed to the outer end of the hexagonal prism 25 by screws.

[0020] Specific usage: When the movable guardrail 2 needs to be lifted, insert the hexagonal pin 25 into the second hexagonal hole 24 and the first hexagonal hole 13 in sequence. Then, rotate the hexagonal pin 25 by cranking the handle 26. The rotation of the hexagonal pin 25 causes the second hexagonal hole 24 and the first hexagonal hole 13 to rotate simultaneously. The rotation of the second hexagonal hole 24 causes the positioning tooth 23 to rotate, and the rotation of the first hexagonal hole 13 causes the movable gear 12 to rotate. The rotation of the movable gear 12 causes the U-shaped bracket 11 on the second rack 14 to move outward along the fixed rack 7. At the same time, the rotation of the movable gear 12 moves to the right along the fixed rack 7. The rightward movement of the movable gear 12 causes the L-shaped bracket 8 to move to the right. The rightward movement of the L-shaped bracket 8 causes the first rack 9 to flip downward around the fixed gear 4. The downward flip of the first rack 9 causes the movable guardrail 2 to flip upward and be lifted. When the movable guardrail 2 is lifted to the designated position, insert the positioning pin 22 into the corresponding positioning tooth 23. At this time, the position of the movable guardrail 2 is locked.

[0021] The above description represents a preferred embodiment of the present invention. For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of the present invention, based on the teachings of the present invention, still fall within the protection scope of the present invention.

Claims

1. A guardrail for road and bridge construction, comprising a fixed guardrail (1) and a movable guardrail (2), characterized in that: The fixed guardrail (1) has a docking groove (3) on its right end. A fixed gear (4) is fixed inside the docking groove (3) by screws. The movable guardrail (2) is placed on the right side of the fixed guardrail (1). The movable guardrail (2) is provided with a baffle (5), a through groove (6), a fixed rack (7), and an L-shaped bracket (8). The baffle (5) is integrally formed and connected to the upper and lower left ends of the movable guardrail (2), and the baffle (5) is nested in the docking groove (3). The through groove (6) is opened on the left side of the front end of the movable guardrail (2). The fixed rack (7) is fixed to the upper left side of the movable guardrail (2) by screws. The L-shaped bracket (8) is placed at the left end of the movable guardrail (2). The left end of the L-shaped bracket (8) is placed to the left of the fixed gear (4). The L-shaped bracket (8) is provided with a first rack (9), a support frame (10) and a U-shaped frame (11). The first rack (9) is fixed to the top of the L-shaped bracket (8) by screws, and the first rack (9) is meshed with the fixed gear (4). The support frame (10) is fixed to the top of the L-shaped bracket (8) by screws. The nails are symmetrically installed and fixed at the front and rear ends of the right side of the L-shaped bracket (8), and the U-shaped bracket (11) is placed above the right side of the L-shaped bracket (8); the upper inner side of the support frame (10) is connected to a movable gear (12) by an interference fit bearing, the movable gear (12) meshes with the fixed rack (7), the main shaft of the movable gear (12) passes through the support frame (10) and extends into the through groove (6), and a first hexagonal hole (13) is opened in the middle of the main shaft of the movable gear (12); the top wall of the inner side of the U-shaped bracket (11) is connected to the top of the fixed rack (7). The wall is slidably connected. A second rack (14) is fixed to the bottom of the inner side of the U-shaped frame (11) by screws. The second rack (14) is meshed with the movable gear (12). A power frame (15) is placed on the outside of the through groove (6). The power frame (15) is fixed to the outer wall of the movable guardrail (2) by screws. The upper and lower ends of the power frame (15) are integrally connected to the track (16). A T-shaped slide groove (17) is opened at the front end of the track (16). A T-shaped slider (18) is slidably connected on the T-shaped slide groove (17).

2. The guardrail for road and bridge construction according to claim 1, characterized in that: The front end of the T-shaped slider (18) is integrally connected to the transmission frame (19). The transmission frame (19) is provided with a locking frame (20) and a transmission shaft (21). The locking frame (20) is welded to the front end of the transmission frame (19). A positioning pin (22) is slidably connected in the middle of the locking frame (20). The transmission shaft (21) is interference-fitted to the middle of the transmission frame (19) through a bearing.

3. A guardrail for road and bridge construction according to claim 2, characterized in that: The drive shaft (21) is provided with a positioning tooth (23) and a second hexagonal hole (24). The positioning tooth (23) is integrally formed and connected to the outer side of the front end of the drive shaft (21), and the second hexagonal hole (24) is opened in the middle of the drive shaft (21).

4. A guardrail for road and bridge construction according to claim 3, characterized in that: The second hexagonal hole (24) is symmetrical to the first hexagonal hole (13), and a hexagonal column (25) is nested on the second hexagonal hole (24). A crank (26) is fixed to the outer end of the hexagonal column (25) by screws.

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