Giant embryo overhaul rotary ladder

Abstract

The application provides a giant embryo overhaul rotating ladder, which comprises a mounting base, a rotating base plate rotatable by 90 degrees on the mounting base, a ladder frame on the rotating base plate, upper handrails on both sides of the ladder frame, two guide frames, guide wheels on the two guide frames, and a movable ladder, wherein the bottom end of the movable ladder is provided with an inverted tooth buckle which can be clamped on a buckle locking rod between the two guide frames and fixed on the front side of the platform, and the front side of each of the two guide frames is provided with a lower handrail for walking and holding the movable ladder. The overhaul rotating ladder can be rotated above the center of the giant embryo, effectively preventing the collapse or deformation of the giant embryo, and the upper handrails and the lower handrails can effectively prevent falling accidents, so that the safety performance is high, the structure is simple, the manufacturing and maintenance are easy, and the manufacturing cost is low.

Description

Technical Field

[0001] This invention relates to a ladder for inspecting and repairing embryos, specifically a giant rotating ladder for inspecting and repairing embryos. Background Technology

[0002] As the load capacity of construction machinery increases, the size of the tires used also increases, resulting in large-scale tires for heavy-duty trucks and large construction machinery equipment, known as giant tires, which generally have a diameter of more than 2 meters and a load capacity of more than 100 tons.

[0003] Currently, after the giant tire forming machine is completed, the tire blank is unloaded and placed in the equipment pit for inspection to determine its quality. The current inspection method is as follows: the inspection personnel first step onto the tire blank, insert a portable ladder into the inside of the 2.5-meter-high tire blank (the tire blank is designed to be 4 meters in diameter, with a stop diameter of 1600mm and a height of 2.5 meters), and climb down the ladder to the bottom of the tire blank for inspection and repair. This inspection method has the following drawbacks: First, since the inspection personnel can only insert the portable ladder by stepping on the tire blank, the tire blank is very prone to collapse or even deformation during the stepping process; second, the portable ladder is high and has no handrails, which also poses a great risk of falling for the inspection personnel while walking, resulting in significant safety hazards. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rotating ladder for the maintenance of giant tire blanks. This rotating ladder can rotate to a position above the center of the giant tire blank, effectively preventing the collapse or even deformation of the giant tire blank. The upper and lower handrails effectively prevent falls and safety accidents. It has high safety performance and a simple structure, making it easy to manufacture and maintain, and also has low manufacturing costs.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A giant tire blank inspection rotating ladder includes a mounting base with a rotating chassis that can rotate 90° on it. A ladder frame is mounted on the rotating chassis. The ladder frame includes a staircase on the mounting base and a rectangular platform at the top of the staircase. Upper handrails are provided on both sides of the ladder frame. Guide frames are provided on both sides of the front of the platform. The two guide frames are vertically arranged and each guide frame has guide wheels along its length. A movable ladder that can move up and down along the guide wheels is provided between the two guide frames. A reverse-toothed latch is provided at the bottom of the movable ladder, including a latch that is fixed to the movable ladder. A fixed block is provided, and a movable buckle is hinged to the fixed block. A spring is also provided at the hinge point between the movable buckle and the fixed block. When the movable buckle is not subjected to external force, it is perpendicular to the fixed block. A triangular long lever is provided on one side of the front end of the movable buckle, and a hook is provided on the other side of the front end of the movable buckle. An inclined plane is provided between the long lever and the hook. A buckle locking rod is provided between the two guide frames and fixed to the front side of the platform. The buckle locking rod is located on the rear side of the movable ladder, and the movable buckle can be snapped into the buckle locking rod. Both guide frames are provided with lower handrails for grabbing when walking on the movable ladder.

[0007] As a preferred technical solution, in order to prevent maintenance personnel from slipping off the platform and causing safety accidents when adjusting the moving ladder up and down, and to further improve the safety performance of the maintenance spiral ladder, a safety door is provided between the two upper handrails and above the two guide frames. One side of the safety door is hinged to one of the upper handrails, and the other side is connected to the other upper handrail through a pin.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] 1. This maintenance spiral ladder features a ladder frame mounted on a rotating chassis, allowing the ladder frame to rotate to a position above the center of the giant tire blank. This eliminates the need for stepping on the tire blank, effectively preventing collapse or deformation. Secondly, the ladder frame is equipped with an upper handrail, and the two guide frames have lower handrails, providing maintenance personnel with a stable grip during the maintenance process and preventing falls due to missteps or loss of balance. This ensures high safety performance. Furthermore, this maintenance spiral ladder has a simple structure, making it easy to manufacture and maintain, and also has low manufacturing costs.

[0010] 2. A safety door is also installed between the two handrails to prevent maintenance personnel from slipping off the platform and causing a safety accident when adjusting the moving ladder up and down, thus further improving the safety performance of this maintenance spiral ladder. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 Assembly drawing of the two guide frames and platform;

[0014] Figure 3 This is a schematic diagram of the reverse-toothed snap fastener structure;

[0015] Figure 4 This is a diagram illustrating the installation process of the present invention.

[0016] Reference numerals: 1. Mounting base, 2. Rotating chassis, 3. Ladder frame, 3-1. Stairs, 3-2. Platform, 4. Upper handrail, 5. Guide frame, 6. Guide frame mounting frame, 7. Guide wheel, 8. Movable ladder, 9. Reverse toothed buckle, 9-1. Buckle fixing block, 9-2. Movable buckle piece, 9-2-1. Long locking rod, 9-2-2. Hook, 9-2-3. Inclined plane, 10. Buckle locking rod, 11. Lower handrail, 12. Safety door, 13. Pin, 14. Pit, 15. Cylinder, 16. Giant embryo. Detailed Implementation

[0017] like Figure 1The present invention provides a specific embodiment of a giant tire blank inspection rotating ladder, including a mounting base 1. In this embodiment, the mounting base 1 is cast on the side of a pit 14. The mounting base 1 is provided with a rotating chassis 2 that can rotate 90° on it. In this embodiment, the rotating chassis 2 is connected to the mounting base 1 via a vertical rotating shaft. The rotating chassis 2 is provided with a cylinder 15. The cylinder end of the cylinder 15 is hinged to the mounting base 1, and the piston rod end of the cylinder 15 is hinged to the rotating chassis 2. The rotating chassis 2 can rotate 90° forward or backward on the mounting base 1 by extending or shortening the piston rod of the cylinder 15. The rotating chassis 2 is provided with a ladder frame 3, which includes a staircase 3-1 provided on the mounting base 1 and a ladder frame 3-1 provided on the staircase. The platform 3-2, shaped like a rectangle at the top of the ladder frame 3-1, has upper handrails 4 on both sides. Guide frames 5 are located on both front sides of the platform 3-2. In this embodiment, guide frame mounting brackets 6 are bolted to both front sides of the platform 3-2, with each guide frame 5 fixedly mounted on one of the guide frame mounting brackets 6. The guide frames 5 are vertically aligned with the platform, and each guide frame 5 has guide wheels 7 along its length. To effectively control the manufacturing cost of the entire spiral ladder, facilitate processing and manufacturing, and allow the movable ladder 8 to slide flexibly up and down, this embodiment has a guide wheel 7 staggered on both sides of the two guide frames 5, and two guide wheels 7 located on the same horizontal line at the top of the two guide frames 5. A movable ladder 8, which can move up and down along the guide wheels 7, is provided between the two guide frames 5. To ensure flexible control of the movable ladder 8's movement along the guide wheels 7, its weight should be as light as possible while maintaining its strength. In this embodiment, the movable ladder 8 is made of aluminum. A snap fastener 9 is provided at the bottom of the movable ladder 8. The snap fastener 9 includes a fastener fixing block 9-1 fixed to the bottom of the movable ladder 8. A movable fastener 9-2 is hinged to the fastener fixing block 9-1. A spring is also provided at the hinge point between the movable fastener 9-2 and the fastener fixing block 9-1. Therefore, the movable fastener 9-2 can rotate up and down around the fastener fixing block 9-1, and when not subjected to external force, the movable fastener 9-2 is perpendicular to the fastener fixing block 9-1. When the movable latch 9-2 is under force, it will rotate counterclockwise or clockwise along the hinge. A triangular long latch 9-2-1 is provided on one side of the front end of the movable latch 9-2, and a hook 9-2-2 is provided on the other side. An inclined plane 9-2-3 is provided between the long latch 9-2-1 and the hook 9-2-2, so the long latch 9-2-1 and the hook 9-2-2 are not in contact and have a spatial gap. A latching rod 10 is fixed to the front side of the platform 3-2 between the two guide frames 5. The latching rod 10 is perpendicular to the two guide frames 5. In this embodiment, the latching rod 10 is fixedly connected to the two guide frames 5 through two connecting rods. The latching rod 10 is located on the rear side of the movable ladder 8.Furthermore, the movable buckle 9-2 can be engaged with the buckle locking rod 10. When the movable buckle 9-2 is engaged with the buckle locking rod 10, the movable ladder 8 is locked, and vice versa. Both guide frames 5 have lower handrails 11 on their front sides for gripping while the movable ladder 8 is in motion. In this embodiment, the two lower handrails 11 are curved forward in an arc shape. For ease of control and automation, the cylinder 15 can be connected to an intelligent controller. The intelligent controller can then extend or shorten the piston rod of the cylinder 15, thereby rotating the chassis 2 90 degrees clockwise or counterclockwise.

[0018] A safety door 12 is provided between the two upper handrails 4 and above the two guide frames 5. One side of the safety door 12 is hinged to one of the upper handrails 4, and the other side is connected to the other upper handrail 4 through a pin 13. This prevents maintenance personnel from slipping from the platform 3-2 and causing a safety accident when adjusting the moving ladder 8 to move up and down, and further improves the safety performance of the maintenance spiral ladder.

[0019] When using this invention: Install this maintenance rotating ladder on the side of the pit 14, as follows. Figure 4 As shown, the cylinder 15 extends the piston rod, thereby causing the rotating chassis 2 to rotate 90 degrees clockwise, so that the platform is exactly above the through hole of the giant tire blank 16. At this time, the reverse-toothed buckle 9 is engaged with the buckle locking rod 10. The maintenance personnel walk from the stairs 3-1, holding onto the upper handrail, to the platform 3-2, and lift the movable ladder 8 to disengage the reverse-toothed buckle 9 from the buckle locking rod 10. After the movable buckle 9-2 is no longer under force and is in a perpendicular state to the buckle fixing block 9-1, the movable ladder 8 is lowered in the opposite direction and moves down along the guide wheels 7 on the two guide frames 5. When the movable buckle 9-2 moves down to the buckle locking rod 10, it touches the rod, causing the movable buckle 9-2 to rotate upward, so that the movable ladder 8 continues to slide down to the center of the giant tire blank 16. After the movable ladder 8 is placed and fixed, pull open the latch 13 and open the safety door 12. The maintenance personnel can hold onto the lower handrail 11 and walk up the movable ladder 8 to the bottom of the giant blank 16 for inspection or repair. After the inspection or repair is completed, hold onto the lower handrail 11 and walk up the movable ladder 8 back to the platform 3-2. To ensure safety, first insert the latch 13 and lock the safety door 12, then lift the movable ladder 8 up until the movable buckle 9-2 touches the buckle locking rod 10. At this time, stop moving the movable ladder 8 up and insert the movable buckle 9-2 into the buckle locking rod 10. The hook 9-2-2 and the long buckle 9-2-1 can fix the reverse tooth buckle 9 onto the buckle locking rod 10, that is, to stabilize the movable ladder 8 on the two guide frames 5.

[0020] Of course, the above description of preferred embodiments of the present invention is only in conjunction with the accompanying drawings and is not intended to limit the scope of the present invention. All equivalent changes made in accordance with the principles, construction and structure of the present invention should be covered within the protection scope of the present invention.

Claims

1. A giant tire inspection rotary ladder, characterized in that: The system includes a mounting base (1), on which a rotating base (2) is provided that can rotate 90°. A ladder frame (3) is provided on the rotating base (2). The ladder frame (3) includes a staircase (3-1) on the mounting base (1) and a platform (3-2) at the top of the staircase (3-1). Both sides of the ladder frame (3) are provided with upper handrails (4). Both sides of the front of the platform (3-2) are provided with guide frames (5). The two guide frames (5) are vertically arranged, and both guide frames (5) are provided with guide wheels (7) along their length. A movable ladder (8) that can move up and down along the guide wheels (7) is provided between the two guide frames (5). The bottom end of the movable ladder (8) is provided with a snap fastener (9). The snap fastener (9) includes a snap fastener fixing block (9-1) fixed to the bottom end of the movable ladder (8). A movable... The movable fastener (9-2) and the fastener fixing block (9-1) are hinged together by a spring. When the movable fastener (9-2) is not subjected to external force, it is perpendicular to the fastener fixing block (9-1). A triangular long lever (9-2-1) is provided on one side of the front end of the movable fastener (9-2), and a hook (9-2-2) is provided on the other side of the front end of the movable fastener (9-2). An inclined plane (9-2-3) is provided between 2-1) and the hook (9-2-2). A buckle locking rod (10) is fixed on the front side of the platform (3-2) between the two guide frames (5). The buckle locking rod (10) is located on the rear side of the movable ladder (8), and the movable buckle (9-2) can be snapped into the buckle locking rod (10). The front side of both guide frames (5) is provided with a lower handrail (11) for walking and holding on the movable ladder (8).

2. The giant embryo repair rotary ladder according to claim 1, characterized in that: A safety door (12) is provided between the two upper handrails (4) and above the two guide frames (5). One side of the safety door (12) is hinged to one of the upper handrails (4), and the other side is connected to the other upper handrail (4) through a pin (13).

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