A light support device and tool for shaft part flaw detection

Abstract

The utility model provides a kind of light support device for shaft parts flaw detection, comprising: spherical bearing, bearing pedestal, lifting screw rod, screw rod pedestal, support leg. At least 3 support legs are provided below screw rod pedestal;Lifting screw rod is provided above screw rod pedestal, bearing pedestal is provided above lifting screw rod;Two spherical bearings are provided on bearing pedestal;Spherical bearing includes ball and ball seat, ball is clamped in ball seat and can rotate freely in ball seat. To be detected shaft parts are placed above spherical bearing, and tangent to the ball of spherical bearing. A kind of light support tool for shaft parts flaw detection is also provided, at least contains 2 light support devices for shaft parts flaw detection, each support device in tool is distributed along the length direction of shaft parts, and interval is determined according to the length of shaft parts. The utility model structure light weight, does not need hoisting equipment, flaw detection efficiency, accuracy is improved, adapts to different diameter shaft parts, and versatility is strong.

Description

Technical Field

[0001] This utility model belongs to the field of non-destructive testing auxiliary devices for marine anchor winch equipment, and relates to a lightweight support device and tooling for flaw detection of shaft parts. Background Technology

[0002] With the development of the shipping industry, the quality requirements for marine products are becoming increasingly stringent. For the marine anchor winches produced by our company, the main component—the drive shaft—requires non-destructive testing (NDT) after machining, typically using magnetic particle testing or penetrant testing. Regardless of the type of testing, the testing solvent must be sprayed onto the part's surface, and then inspectors visually assess the surface condition. These shaft components are quite heavy, generally weighing 200-600 kg, making manual handling impossible. Therefore, during testing, the part is usually laid horizontally on a parts rack, and the testing agent is applied to its surface. However, only the upward-facing half of the surface area can be tested at this stage; the downward-facing area cannot be tested. Therefore, after inspecting the upward-facing side, the part must be rotated 180 degrees using lifting equipment before testing the other half. This rotation process is time-consuming and requires the use of lifting equipment, resulting in significant waste.

[0003] Patent CN103217477B provides a radial ultrasonic automatic flaw detection device and control method for axles. The flaw detection device includes a bed, an axle rotation support unit, a gantry unit, at least one flaw detection unit, an ultrasonic generator and receiver, a motor driver unit, a control unit, and an interactive operation unit. Using the ultrasonic automatic flaw detection device and control method of this invention, a radial ultrasonic automatic flaw detection device for axles that is adaptable to different axle types and program-controlled is realized. However, the disadvantages of this device and control method are: complex structure, high maintenance cost, high requirements for installation and debugging, limited adaptability to some scenarios, and high initial investment cost. Utility Model Content

[0004] Based on the shortcomings of the existing technology, the purpose of this utility model is to provide a lightweight support device and tooling for flaw detection of shaft parts, so as to maximize the level of automation and reduce production costs.

[0005] The technical solution of this utility model is as follows: A lightweight support device for flaw detection of shaft parts includes: a ball bearing, a bearing base, a lifting screw, a screw base, and support legs.

[0006] At least three support legs are provided below the screw base; a lifting screw is provided above the screw base, and a bearing base is provided above the lifting screw; two spherical bearings are provided on the bearing base; each spherical bearing includes a ball and a ball seat, with the ball held in the ball seat and able to rotate freely within it. The spherical bearings are used to support the shaft-like parts to be tested; the surface of the shaft-like parts to be tested is tangent to the balls of the spherical bearings.

[0007] Furthermore, the spherical bearing is made of high-precision wear-resistant material to ensure minimal wear when rotating or moving the shaft parts to be tested. It is selected from any of the bearing steel or ceramic materials, or it can be reinforced with a surface coating to enhance its wear resistance. Preferred materials include: GCr15 bearing steel, 440C stainless steel, silicon nitride ceramic materials, zirconium oxide ceramic materials, Al2O3 / Al metal matrix composite materials, PTFE+bronze self-lubricating composite materials, etc. Other commercially available materials not listed can be used to make bearings and are not used to limit the inventiveness of this utility model. Furthermore, the bearing base includes a central planar portion and adjustable wings on both sides, with the adjustable wings positioned above the planar portion; the angle between the adjustable wings and the horizontal direction is 0-60°, and not 0°; by changing this angle, the distance between the two ball bearings is changed, thereby changing the radius of the shaft-type parts to which the support device is adapted.

[0008] In some specific embodiments, the adjustment method for the angle between the adjustable wing and the horizontal direction is as follows: Arc-shaped threaded adjustment grooves are opened on both sides of the flat portion of the bearing base. A threaded post is provided at the bottom of the adjustable wing. The threaded post passes through the arc-shaped threaded adjustment groove and is locked by a nut. When the nut is rotated, the threaded post moves along the arc-shaped groove, causing the adjustable wing to rotate around the connection point, achieving fine angle adjustment from 0-60° (excluding 0°). The angle scale is marked next to the adjustment groove, and the minimum adjustment accuracy can reach 1°. The angle is kept fixed by the self-locking characteristic of the thread, accurately adapting to shaft parts of different radii. This adjustment method is only one available method. In practical applications, there are other methods that can be used to adjust the angle between the adjustable wing and the horizontal direction. This adjustment method is not a core technical feature of this solution and cannot be used to limit the inventiveness of this utility model.

[0009] Furthermore, two spherical bearings are respectively mounted on the adjustable wings on both sides, and the ball seats of the spherical bearings are stably and firmly connected to the upper side of the adjustable wings; the stably and firmly connected connection can be integrally formed, welded, threaded, etc.

[0010] Furthermore, there is lubricant between the ball and the ball seat of the spherical bearing to ensure that the ball can rotate freely and smoothly 360°.

[0011] Furthermore, the lifting screw adopts a trapezoidal thread or ball screw structure; the effective stroke H = 100-500 mm, and the lifting accuracy ±0.5 mm; Furthermore, the screw base is made of cast steel or cast iron and is round or square in shape; a threaded hole is provided in the center of the top to cooperate with the lifting screw; and more than three support leg mounting holes are evenly distributed on the lower side.

[0012] Furthermore, the bottom of the support leg is provided with an anti-slip rubber pad or an adjustable foot.

[0013] The second technical solution of the present invention provides a lightweight support fixture for flaw detection of shaft parts. The fixture includes at least two lightweight support devices for flaw detection of shaft parts. Each support device in the fixture is evenly distributed along the length direction of the shaft part, and the spacing is determined according to the length of the shaft part.

[0014] Furthermore, the height difference between adjacent support devices is ≤5 mm, ensuring that the levelness of shaft parts is ≤0.5°.

[0015] The working principle is as follows: The shaft part to be inspected is placed above two spherical bearings and tangent to the rotatable spherical surface; the height is adjusted by rotating the lifting screw to align the center line of the shaft part with the flaw detection equipment; the shaft part can be freely rotated on the spherical bearings by manual pushing or with the help of external force (such as motor drive) to achieve full circumferential flaw detection.

[0016] Compared with the prior art, the present invention has at least the following improvements and beneficial effects: The technical solution of this utility model adopts a lightweight support device design and uses ball bearings, allowing the part to be tested to rotate and move freely, and also to a certain extent to lift and lower. Using this lightweight support device can effectively reduce the number of lifting operations, save costs, and improve safety.

[0017] (1) The structure is lightweight and the weight of a single support device is small, making it easy to transport and install; (2) No lifting equipment is required; a single person can operate the shaft parts to rotate freely 360°, thus improving the efficiency of flaw detection. (3) The spherical bearing has a small support contact surface, which reduces the obstruction of the inspection surface and improves the detection accuracy; (4) Spherical bearings are adaptable to shaft parts of different diameters and have strong versatility; (5) The support tooling is modularly designed, and the number of support devices can be flexibly configured according to the length of shaft parts. Attached Figure Description

[0018] Figure 1 A simplified diagram of the structure and operation of a lightweight support device for non-destructive testing; Figure label: 1. Shaft-type parts to be inspected; 2. Ball bearing; 3. Bearing base; 4. Lifting screw; 5. Screw base; 6. Support leg. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to specific embodiments. It should be noted that the following embodiments will help those skilled in the art to further understand this utility model, but do not limit this utility model in any way. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model. These all fall within the protection scope of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example 1 1. Assembly of support device S1. Fix the ball bearing 2 to the mounting position of the bearing base 3 using bolts or set screws; S2. Connect the lifting screw 4 to the center position at the bottom of the bearing base 3 by bolting (or welding); S3. Screw the lifting screw 4 into the threaded hole of the screw base 5; S4. Three support legs 6 are evenly distributed below the screw base 5 by bolts (or welding) to form a stable triangular support structure.

[0022] 2. Assembly of supporting fixtures S1. First, arrange at least two of the above devices in a straight line according to the length of the shaft part 1 to be tested. The length of the arrangement should be less than the length of the shaft part 1 to be tested. S2. Hoist the shaft part to be inspected 1 to the top of the support device; S3. Rotate the two lifting screws 4 to the height that lifts the shaft part 1 to be inspected; S4. Adjust the width of the ball bearing 2 on the bearing base 3 so that the ball bearing 2 can just contact the shaft part 1 to be tested.

[0023] 3. Flaw Detection Operation Procedure S1. Hoist the shaft part 1 to be inspected onto the support device, making its axis perpendicular to the length direction of the bearing base 3; S2. Rotate the lifting screw 4 to adjust the height of the shaft part 1 to be inspected to the optimal inspection position of the flaw detection equipment; S3. Spray the flaw detection agent onto the surface of the shaft part 1 to be inspected, and slowly rotate the shaft part manually to complete the full circumferential flaw detection; after the upper surface is inspected, rotate any end of the shaft part 1 to be inspected by 180 degrees, so that the surface that was originally facing down turns to face up; finally, spray the flaw detection agent again for inspection. S4. After the flaw detection is completed, rotate the lifting screw 4 in the opposite direction to lower the height of the shaft part and remove the part.

[0024] Because it is a ball bearing, the shaft part to be tested can also move axially, making part of the shaft part to be tested protrude and easier to observe.

[0025] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A lightweight support device for flaw detection of shaft parts, characterized in that, include: Sphere bearing (2), bearing base (3), lifting screw (4), screw base (5), support leg (6); At least three support legs (6) are provided below the screw base (5); a lifting screw (4) is provided above the screw base (5), and a bearing base (3) is provided above the lifting screw (4); two ball bearings (2) are provided on the bearing base (3); the ball bearing (2) includes a ball and a ball seat, the ball is locked in the ball seat and can rotate freely in the ball seat, and the ball bearing (2) is used to support the shaft part (1) to be tested.

2. The lightweight support device for flaw detection of shaft parts according to claim 1, characterized in that, The ball bearing (2) is made of high-precision wear-resistant material, selected from bearing steel or ceramic material.

3. A lightweight support device for flaw detection of shaft parts according to claim 1, characterized in that, The bearing base (3) includes a central planar portion and two adjustable wings on both sides, with the adjustable wings positioned above the planar portion; the angle between the adjustable wings and the horizontal direction is 0-60° and not 0°.

4. A lightweight support device for flaw detection of shaft parts according to claim 3, characterized in that, Two ball bearings (2) are respectively installed on the adjustable wings on both sides, and the ball seat of the ball bearing (2) is stably and firmly connected to the upper side of the adjustable wing; the stably and firmly connected connection is any one of integral molding, welding or threaded connection.

5. A lightweight support device for flaw detection of shaft parts according to claim 1, characterized in that, There is lubricant between the ball and the ball seat of the ball bearing (2).

6. A lightweight support device for flaw detection of shaft parts according to claim 1, characterized in that, The lifting screw (4) adopts a trapezoidal thread or ball screw structure; the effective stroke H=100-500 mm, and the lifting accuracy is -0.5~0.5 mm.

7. A lightweight support device for flaw detection of shaft parts according to claim 1, characterized in that, The screw base (5) is made of cast steel or cast iron and is round or square in shape; a threaded hole is provided in the center of the upper part of the screw base (5) to cooperate with the lifting screw (4); more than 3 support leg mounting holes are evenly distributed on the lower side of the screw base (5).

8. A lightweight support device for flaw detection of shaft parts according to claim 1, characterized in that, The bottom of the support leg (6) is equipped with an anti-slip rubber pad or an adjustable foot.

9. A lightweight support fixture for flaw detection of shaft-type parts, characterized in that, The fixture includes at least two lightweight support devices for flaw detection of shaft parts as described in any one of claims 1 to 8. Each support device in the fixture is evenly distributed along the length direction of the shaft part (1), and the spacing is determined according to the length of the shaft part (1).

10. A lightweight support fixture for flaw detection of shaft parts according to claim 9, characterized in that, The height difference between adjacent support devices should be ≤5 mm, and the levelness of shaft parts should be ≤0.5°.

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