A turnover mechanism for a heavy mass cast iron flywheel

Abstract

The utility model discloses a kind of turnover mechanism of high-quality cast iron flywheel, it is related to the technical field of machining auxiliary equipment.The turnover mechanism includes fixed frame, turnover frame and two pairs of moving frame.Turnover frame is rotatably connected in the bearing seat on fixed frame by the turnover shaft of both sides;Moving frame is slidably connected in the guide rail slot of turnover frame by moving wheel, its inner side is equipped with the linear guide rail of the "eight" type distribution, and the spacing of slider and L-shaped limiting plate thereon is driven by hand screw adjustment.This utility model is adapted to cast iron flywheel of different diameters by adjustable bidirectional limiting structure, effectively suppresses radial runout and inertial impact in turnover process;Flexible clamping is realized by cooperating rubber block, to avoid damaging flywheel surface;The whole machine is equipped with universal wheel to facilitate movement, and hand wheel realizes stable manual turnover.The turnover mechanism has the characteristics of stable structure, simple operation and high safety, and is suitable for efficient turnover operation of heavy castings.

Description

Technical Field

[0001] This utility model relates to the technical field of flywheel processing, specifically to a flipping mechanism for a large-mass cast iron flywheel. Background Technology

[0002] In the manufacturing and maintenance of heavy machinery, large-mass cast iron flywheels, as key components of engines and gearboxes, often require double-sided machining or inspection. Therefore, a safe and stable 180° tilting operation is essential. Traditional tilting methods rely heavily on manual adjustment of the orientation after hoisting by a crane, which presents the following prominent problems: First, there is a lack of effective positioning and limiting devices. During the flipping process, the flywheel is prone to radial offset or axial movement, especially when the center of gravity is unstable or the rotation speed is uneven, which can cause violent shaking or even impact. This not only affects operational safety, but may also damage the flywheel disc or external gear ring due to inertial impact, reducing the workpiece accuracy and service life.

[0003] Secondly, they lack versatility. Most existing fixtures are designed with fixed dimensions, making it difficult to adapt to different flywheel models (such as flywheel disc diameter and external gear ring size, which vary greatly). This forces companies to configure a variety of special tooling, increasing production costs and warehousing burdens.

[0004] Secondly, protective measures are insufficient. The metal clamps are in direct contact with the surface of the cast iron flywheel, which can easily cause mechanical damage such as scratches and indentations, affecting the quality of subsequent processing or assembly performance.

[0005] Therefore, there is an urgent need to design a manual flipping mechanism that is simple in structure, highly adjustable, and safe, so as to reliably clamp, smoothly flip, and protect the surface of large cast iron flywheels of different specifications, thereby improving work efficiency and safety. Utility Model Content

[0006] The purpose of this invention is to provide a flipping mechanism for a large-mass cast iron flywheel to solve the aforementioned defects caused by the prior art.

[0007] A tilting mechanism for a large-mass cast iron flywheel includes a fixed frame, a tilting frame, and two pairs of movable frames. The tilting frame is located above the fixed frame, and a pair of tilting shafts are coaxially connected to its two sides. A pair of bearing seats are symmetrically installed on both sides of the fixed frame, and the tilting shafts are rotatably connected to the bearing seats on the same side. The two pairs of movable frames are symmetrically distributed on the upper and lower sides of the tilting frame. Two rows of movable wheels are rotatably connected to both sides of the movable frames. Two pairs of guide rail grooves are symmetrically installed on both sides of the tilting frame, and the movable wheels are rotatably connected to the guide rail grooves on the same side. A pair of linear guide rails arranged in a figure-eight pattern are symmetrically connected to the inner side of the movable frames. A slider is slidably connected to the linear guide rails, and an L-shaped limiting plate is connected to the side of the slider. A mounting plate is vertically connected to the outer end of the linear guide rails, and a hand-tightening screw is rotatably connected to the mounting plate. The inner end of the hand-tightening screw is threadedly connected to the adjacent limiting plate.

[0008] Preferably, a number of casters are evenly installed on the bottom of the fixed frame.

[0009] Preferably, the outer end of the flipping shaft is connected to a hand crank via a key.

[0010] Preferably, a pair of industrial fasteners are provided between the moving frame and the flipping frame.

[0011] Preferably, a rubber block is fixedly connected to the corner of the limiting plate.

[0012] Compared with the prior art, the present invention has the following advantages: 1. High adaptability and adjustability: Through the "eight"-shaped linear guide rail and the slider-limit plate structure driven by the hand-tightening screw, the distance between the upper and lower limit plates can be flexibly adjusted to adapt to flywheel discs and external gear rings of different diameters, realizing multiple uses in one machine and reducing tooling costs.

[0013] 2. Excellent stability and safety: The upper and lower bidirectional L-shaped limiting plates envelop the outer edge of the flywheel and combine with industrial buckles to firmly lock the moving frame to the flipping frame, effectively preventing the flywheel from axially falling off and radially moving during the flipping process, suppressing inertial impact, and ensuring operational safety.

[0014] 3. Effective protection of workpiece surface: Rubber protective blocks are set at the corners of the limit plate to achieve flexible contact with the flywheel surface, avoiding scratches, indentations and other damage caused by hard collisions, thus ensuring workpiece quality. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the overall front view of this utility model.

[0017] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention.

[0018] Figure 4 This is a schematic diagram of the cast iron flywheel in this utility model.

[0019] in: 10-Fixed frame; 11-Universal wheel; 12-Flip frame; 13-Flip shaft; 14-Bearing seat; 15-Hand crank; 16-Moving frame; 17-Moving wheel; 18-Guide rail groove; 19-Industrial buckle; 20-Linear guide rail; 21-Slider; 22-Limit plate; 23-Rubber block; 24-Mounting plate; 25-Hand screw; 30-Cast iron flywheel; 31-Flywheel disc; 32-External gear ring. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 4 As shown, a tilting mechanism for a large-mass cast iron flywheel includes a fixed frame 10, a tilting frame 12, and two pairs of movable frames 16. The tilting frame 12 is located above the fixed frame 10, and a pair of tilting shafts 13 are coaxially connected to its two sides. A pair of bearing seats 14 are symmetrically installed on both sides of the fixed frame 10, and the tilting shafts 13 are rotatably connected to the bearing seats 14 on the same side. The two pairs of movable frames 16 are symmetrically distributed on the upper and lower sides of the tilting frame 12. Two rows of movable wheels 17 are rotatably connected to both sides of the movable frames 16. Two pairs of guide rail grooves 18 are symmetrically installed. The moving wheel 17 is rotatably connected to the guide rail groove 18 on the same side. A pair of linear guide rails 20 arranged in a figure-eight pattern are symmetrically connected to the inner side of the moving frame 16. A slider 21 is slidably connected to the linear guide rail 20. An L-shaped limiting plate 22 is connected to the side of the slider 21. A mounting plate 24 is vertically connected to the outer end of the linear guide rail 20. A hand-tightening screw 25 is rotatably connected to the mounting plate 24. The inner end of the hand-tightening screw 25 is threaded to the adjacent limiting plate 22. According to the diameter of the flywheel disc 31 and the outer gear ring 32 on the cast iron flywheel 30, the distance between the upper and lower limiting plates 22 can be adjusted by turning the corresponding hand-tightening screw 25 to reduce the large radial movement of the cast iron flywheel 30 during the flipping process and reduce the large inertial impact that could damage the surface of the cast iron flywheel 30.

[0022] In this embodiment, a plurality of casters 11 are evenly installed on the bottom of the fixed frame 10. The casters 11 are used to move the entire machine.

[0023] In this embodiment, a hand crank 15 is connected to the outer end of the flipping shaft 13 via a key. The hand crank 15 is used to manually drive the flipping frame 12 to rotate.

[0024] In this embodiment, a pair of industrial fasteners 19 are provided between the movable frame 16 and the flip frame 12. The industrial fasteners 19 are used to fix the movable frame 16 to the flip frame 12 before rotating the flip frame 12.

[0025] In this embodiment, a rubber block 23 is fixedly connected to the corner of the limiting plate 22. The rubber block 23 is used to prevent damage to the surface of the cast iron flywheel 30 when the rotating flip frame 12 is rotated.

[0026] The working process of a tilting mechanism for a large-mass cast iron flywheel is as follows: 1. Preparation stage: Open the upper industrial buckle 19, slide the upper pair of movable frames 16 outward along the guide rail groove 18 and separate them; at the same time, fasten the lower industrial buckle 19 to fix the lower pair of movable frames 16 onto the flip frame 12.

[0027] 2. Size adjustment: According to the specific model of the cast iron flywheel 30 to be flipped, measure the diameter of its flywheel disc 31 and outer gear ring 32, and adjust the distance between the upper and lower limit plates 22 by turning the corresponding hand screws 25 so that they match the outer edge contour of the flywheel and leave an appropriate gap to achieve flexible contact.

[0028] 3. Mount the flywheel: Using hoisting equipment, place the cast iron flywheel 30 face up and centered on the lower limiting plate 22. Ensure the flywheel's center of gravity is on the rotation axis to avoid uneven loading.

[0029] 4. Closed clamping: The industrial fastener 19 is fastened to secure the pair of movable frames 16 to the flipping frame 12. At this time, the upper limiting plates 22 are evenly distributed on the upper side of the flywheel, forming a bidirectional limiting mechanism to prevent the flywheel from moving axially and radially during flipping.

[0030] 5. Perform the flip: The operator slowly turns the hand crank 15, driving the flipping frame 12 to rotate 180° at a constant speed around the flipping axis 13. Throughout the flipping process, the limiting plate 22 and the rubber block 23 remain in contact with the outer edge of the flywheel, absorbing vibration, suppressing shaking, and ensuring a smooth transition of the flywheel.

[0031] 6. Unloading stage: After the flipping is completed, open the industrial buckle 19 on top, slide the pair of moving frames 16 on top outward along the guide rail groove 18 and separate them, and use hoisting equipment to smoothly lift the cast iron flywheel 30 with the reverse side facing up away, thus completing the flipping operation.

[0032] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A turnover mechanism for a heavy mass cast iron flywheel, characterized in that, The system includes a fixed frame (10), a flip frame (12), and two pairs of movable frames (16). The flip frame (12) is located above the fixed frame (10), and a pair of flip shafts (13) are coaxially connected to its two sides. A pair of bearing seats (14) are symmetrically installed on both sides of the fixed frame (10). The flip shafts (13) are rotatably connected to the bearing seats (14) on the same side. The two pairs of movable frames (16) are symmetrically distributed on the upper and lower sides of the flip frame (12). Two rows of movable wheels (17) are rotatably connected to both sides of the movable frames (16). Two pairs of guide rails are symmetrically installed on both sides of the flip frame (12). The groove (18) is where the movable wheel (17) is tumbled and connected to the guide rail groove (18) on the same side. A pair of linear guide rails (20) arranged in a figure-eight pattern are symmetrically connected to the inner side of the movable frame (16). A slider (21) is slidably connected to the linear guide rail (20). An L-shaped limiting plate (22) is connected to the side of the slider (21). An mounting plate (24) is vertically connected to the outer end of the linear guide rail (20). A hand screw (25) is rotatably connected to the mounting plate (24). The inner end of the hand screw (25) is threadedly connected to the adjacent limiting plate (22).

2. A turnover mechanism for a heavy mass cast iron flywheel as claimed in claim 1, wherein, Several casters (11) are evenly installed on the bottom of the fixed frame (10).

3. A mechanism for inverting a large mass cast iron flywheel as defined in claim 1 wherein, The outer end of the flipping shaft (13) is connected to a hand crank (15) via a key.

4. The tilting mechanism of a large-mass cast iron flywheel according to claim 1, characterized in that, A pair of industrial fasteners (19) are provided between the movable frame (16) and the flip frame (12).

5. The tilting mechanism of a large-mass cast iron flywheel according to claim 1, characterized in that, A rubber block (23) is fixedly connected to the corner of the limiting plate (22).

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