Construction operation platform of bridge concrete crash barrier

Abstract

This invention relates to a construction operation platform for a bridge concrete crash barrier. The platform includes a portal frame, with pulleys at the bottom to move it, a safety railing at the top, and a first ladder on the side. A U-shaped platform is mounted on the main frame, and a second ladder leading to the top of the main frame provides access to the first platform. This invention offers safe construction, low investment, low construction cost, fast construction speed, and simple operation. The trolley is moved and supported by pulleys on both sides, facilitating movement. It only needs to rest on the laid box girder, solving geographical limitations, saving on the use of large machinery, and reducing costs.

Description

Technical Field

[0001] This invention belongs to the technical field of bridge construction equipment, specifically relating to a construction operation platform for bridge concrete crash barriers. Background Technology

[0002] Currently, there are many equipment and methods used for the construction of concrete crash barriers on bridge superstructures, especially for the installation and removal of steel formwork on the sides of the crash barriers, cleaning, concrete pouring, painting and finishing, and the installation of other facilities. These include using cranes, mobile installation and dismantling vehicles, erecting work platforms, aerial work platforms, and large mobile suspended platforms for the installation, dismantling, cleaning, and painting of concrete crash barriers.

[0003] Using cranes or mobile installation / dismantling vehicles is often limited by terrain and traffic conditions. These devices are costly for bridge construction and have many drawbacks, such as difficulty in meeting construction needs when crossing rivers. Erecting work platforms requires high-quality foundations and a large amount of steel pipes or structural steel, and the erection and dismantling of these materials require a lot of time and manpower, resulting in high construction costs. Aerial work vehicles need to be grounded and are greatly restricted by local traffic conditions. Large mobile suspended platforms have slow movement speeds and poor maneuverability, all of which affect the construction efficiency of crash barriers. Summary of the Invention

[0004] The purpose of this invention is to provide a construction operation platform for bridge concrete crash barriers in order to solve the problems mentioned in the background art.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A construction operation platform for a bridge concrete crash barrier includes a portal frame, with pulleys at the bottom of the main frame to drive its movement, a safety guardrail at the top of the main frame, and a ladder on the side of the main frame.

[0007] The main frame is equipped with a U-shaped platform No. 1, and a second ladder leading to the top of the main frame for accessing and exiting the platform No. 1 is provided at the platform No. 1.

[0008] The No. 1 platform includes a load-bearing plate and two or more mounting plates that fix the load-bearing plate.

[0009] The mounting plate extends downward and has an opening facing upward for storing the anti-collision guardrail template. The top of the storage cabinet has two symmetrical slide rails for guiding the anti-collision guardrail template.

[0010] The mounting plate is provided with two rotating shafts that are parallel to the length direction of the crash barrier and correspond to the slide rail. Three adjusting blocks for adjusting the position of the crash barrier template are provided at equal intervals along the circumference of the rotating shafts.

[0011] Preferably, the slide rail is provided with two first lead screw and nut pairs, each first lead screw and nut pair including a first lead screw shaft and a first nut, and a first transmission mechanism is provided between the two first lead screw and nut pairs and the ends of the corresponding rotating shafts.

[0012] Preferably, the first transmission mechanism includes a first pulley located at both ends of the rotating shaft, a second pulley located on the first lead screw shaft, and a first synchronous belt located between the first pulley and the second pulley for driving them to rotate. The diameter of the first pulley is more than ten times the diameter of the second pulley.

[0013] Preferably, the storage cabinet is equipped with a piston plate and a first hydraulic cylinder, the first hydraulic cylinder being located at the bottom of the piston plate. The main frame is equipped with two or more second hydraulic cylinders corresponding to the pulleys. An oil pipe is provided between the first and second hydraulic cylinders. The pulley is equipped with a first gear that rotates concentrically with it. The second hydraulic cylinder is equipped with a second lead screw shaft. The second lead screw shaft is equipped with a second nut that forms a second lead screw nut pair with it. The end of the second lead screw shaft away from the corresponding second hydraulic cylinder is equipped with a second gear that meshes with the first gear. The diameter of the second gear is larger than that of the first gear. The pulley is equipped with a brake button.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention offers safe construction and features low investment, low construction cost, fast construction speed, and simple operation. The trolley is moved and supported by pulleys on both sides, making it easy to move. It only needs to be placed on the laid box girder, solving the problem of geographical limitations, saving the use of large machinery, and reducing costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0019] Figure 4 This is a top view of the present invention;

[0020] Figure 5 This is a schematic diagram of the main frame structure in this invention;

[0021] Figure 6 This is a schematic diagram showing the positional relationship between the adjusting block and the storage cabinet in this invention.

[0022] In the diagram: 1. Main frame; 2. Pulley; 3. Safety railing; 4. Ladder No. 1; 5. Platform No. 1; 6. Load-bearing plate; 7. Mounting plate; 8. Storage cabinet; 9. Slide rail; 10. Rotary shaft; 11. Adjusting block; 12. Lead screw and nut pair No. 1; 13. Transmission mechanism No. 1; 14. Piston plate; 15. Hydraulic cylinder No. 1; 16. Hydraulic cylinder No. 2; 17. Gear No. 1; 18. Lead screw shaft No. 2; 19. Nut No. 2; 20. Gear No. 2; a. Crash guardrail. Detailed Implementation

[0023] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Example 1

[0025] like Figure 1-6 As shown, a construction operation platform for a bridge concrete anti-collision guardrail a includes a main frame 1 with a portal frame structure. The bottom end of the main frame 1 is provided with a pulley 2 to drive the main frame 1 to move. The top end of the main frame 1 is provided with a safety guardrail 3. The side of the main frame 1 is provided with a ladder 4.

[0026] The main frame 1 is provided with a U-shaped platform 5, and a second ladder leading to the top of the main frame 1 for entering and exiting the platform 5 is provided at the platform 5.

[0027] The No. 1 platform 5 includes a load-bearing plate 6 and two or more mounting plates 7 for fixing the load-bearing plate 6.

[0028] The mounting plate 7 extends downward and has an upward-facing opening for storing the anti-collision guardrail template. The top of the storage cabinet 8 has two symmetrical slide rails 9 for guiding the anti-collision guardrail template.

[0029] The mounting plate 7 is provided with two rotating shafts 10 that are parallel to the length direction of the crash barrier and correspond to the slide rail 9. Three adjusting blocks 11 for adjusting the position of the crash barrier template are provided at equal intervals along the circumference of the rotating shafts 10.

[0030] In the above embodiment, the main frame 1 is placed outside the two guardrails a, and the pulleys 2 are used to move the main frame 1 along the extension direction of the guardrails a. Workers climb up to the top platform of the main frame 1 via ladder 4, and then enter platform 5 via ladder 2 to carry out construction work on the side of the guardrails a.

[0031] The removed guardrail templates are placed on slide rail 9 and lowered. When the guardrail templates slide to the bottom of slide rail 9, they enter the storage cabinet 8 for temporary storage. When the storage cabinet 8 can no longer hold the guardrail templates, the main frame 1 is moved to the unloading position to remove the guardrail templates stored in the storage cabinet 8 and then the dismantling of the guardrail templates continues.

[0032] If the guardrail template tilts during its descent, it will cause the guardrail templates inside the locker 8 to be placed haphazardly, thus reducing the storage efficiency of the locker 8 and affecting the retrieval of the guardrail templates. Multiple adjusting blocks 11 made of rubber are installed, and a counterweight is placed on the rotating shaft 10 so that one of the adjusting blocks 11 faces upwards and two face downwards, with one of the adjusting blocks 11 positioned along the trajectory of the guardrail template's descent. During its descent, the guardrail template contacts one of the adjusting blocks 11 near the slide rail 9, causing the guardrail template to rotate. The inertia of the adjusting block 11 itself will obstruct the movement of the guardrail template, slowing its movement. If the guardrail template tilts, the side that first contacts the adjusting block 11 will rotate under the adjusting action of the adjusting block 11, thus ensuring the guardrail template enters the locker 8 with a neat posture.

[0033] As a further embodiment of the present invention, the slide rail 9 is provided with two first lead screw nut pairs 12, each first lead screw nut pair 12 including a first lead screw shaft and a first nut, and a first transmission mechanism 13 is provided between the two first lead screw nut pairs 12 and the ends of the corresponding rotating shafts 10.

[0034] As a further embodiment of the present invention, the first transmission mechanism 13 includes a first pulley disposed at both ends of the rotating shaft 10, a second pulley disposed on the first lead screw shaft, and a first synchronous belt disposed between the first pulley and the second pulley for driving the two to rotate. The diameter of the first pulley is more than ten times the diameter of the second pulley.

[0035] In the above embodiment, when the adjusting block 11 rotates, it drives the rotating shaft 10 to rotate, which in turn drives the first pulley to rotate. The first pulley drives the second pulley to rotate via the first synchronous belt, and the second pulley drives the first lead screw shaft to rotate, thereby causing the first lead screw shaft to move along its axial direction. When the two first lead screw shafts extend, they can contact the side of the guardrail template, thus allowing for a second adjustment of the guardrail template while the adjusting block 11 is being adjusted, providing double assurance for the position adjustment of the guardrail template. The diameter of the first pulley is much larger than that of the second pulley, allowing the first lead screw shaft to rotate at a greater angle, thus ensuring that the travel of the first lead screw shaft is sufficient to adjust the guardrail template.

[0036] As a further embodiment of the present invention, the storage cabinet 8 is provided with a piston plate 14 and a first hydraulic cylinder 15. The first hydraulic cylinder 15 is located at the bottom of the piston plate 14. The main frame 1 is provided with two or more second hydraulic cylinders 16 corresponding to the pulley 2. An oil pipe is provided between the first hydraulic cylinder 15 and the second hydraulic cylinder 16. The pulley 2 is provided with a first gear 17 that rotates concentrically with it. The second hydraulic cylinder 16 is provided with a second lead screw shaft 18. The second lead screw shaft 18 is provided with a second nut 19 that forms a second lead screw nut pair with it. The end of the second lead screw shaft 18 away from the corresponding second hydraulic cylinder 16 is provided with a second gear 20 that meshes with the first gear 17. The diameter of the second gear 20 is larger than the diameter of the first gear 17. The pulley 2 is equipped with a brake button.

[0037] In the above embodiment, after storing a sufficient number of guardrail templates, the guardrail templates inside the storage cabinet 8 exert significant pressure on the piston plate 14, causing the piston plate 14 to move downwards, thereby compressing the first hydraulic cylinder 15. The first hydraulic cylinder 15 shortens under pressure, causing the second hydraulic cylinder 16 to extend. The second hydraulic cylinder 16 drives the second lead screw shaft 18 to extend, causing the second lead screw shaft 18 to rotate under the action of the second nut 19, thereby driving the second gear 20 and the first gear 17 to rotate, which in turn drives the pulley 2 to rotate. By utilizing the gravity of the guardrail templates to drive the pulley 2 to rotate, the operating platform can move automatically without additional energy or manual dragging, making the movement of the operating platform more convenient.

[0038] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A construction operations platform for a bridge concrete crash barrier, characterised in that: The main frame (1) includes a portal frame structure. The bottom end of the main frame (1) is provided with a pulley (2) to drive the main frame (1) to move. The top end of the main frame (1) is provided with a safety guardrail (3). The side of the main frame (1) is provided with a ladder (4). The main frame (1) is provided with a U-shaped platform (5), and a second ladder leading to the top of the main frame (1) is provided at the platform (5) for entering and exiting the platform (5). The No. 1 platform (5) includes a load-bearing plate (6) and an installation plate (7) for fixing the load-bearing plate (6). The mounting plate (7) extends downward and is provided with a storage cabinet (8) with an upward opening for storing the anti-collision guardrail template. The top of the storage cabinet (8) is provided with two symmetrical slide rails (9) for guiding the anti-collision guardrail template. The mounting plate (7) is provided with two rotating shafts (10) that are parallel to the length direction of the crash barrier and correspond to the slide rail (9). The rotating shafts (10) are provided with three adjusting blocks (11) at equal intervals along their circumference for adjusting the position of the crash barrier template. The slide rail (9) is provided with two first screw nut pairs (12), each first screw nut pair (12) includes a first screw shaft and a first nut, and a first transmission mechanism (13) is provided between the ends of the two first screw nut pairs (12) and the corresponding rotating shaft (10). The first transmission mechanism (13) includes a first pulley located at both ends of the rotating shaft (10), a second pulley located on the first lead screw shaft, and a first synchronous belt located between the first pulley and the second pulley for driving them to rotate. The diameter of the first pulley is more than ten times the diameter of the second pulley.

2. A construction work platform for a crash barrier of bridge concrete according to claim 1, characterized in that: The storage cabinet (8) is equipped with a piston plate (14) and a first hydraulic cylinder (15). The first hydraulic cylinder (15) is located at the bottom of the piston plate (14). The main frame (1) is equipped with two or more second hydraulic cylinders (16) corresponding to the pulley (2). An oil pipe is provided between the first hydraulic cylinder (15) and the second hydraulic cylinder (16). The pulley (2) is equipped with a first gear (17) that rotates concentrically with it. The second hydraulic cylinder (16) is equipped with a second lead screw shaft (18). The second lead screw shaft (18) is equipped with a second nut (19) that forms a second lead screw nut pair with it. The end of the second lead screw shaft (18) away from the corresponding second hydraulic cylinder (16) is equipped with a second gear (20) that meshes with the first gear (17). The diameter of the second gear (20) is greater than the diameter of the first gear (17). The pulley (2) is equipped with a brake button.

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