Angle adjustable hoisting device and method

Abstract

The application discloses an angle-adjustable hoisting device and method, and designs the hoisting device including a lifting ring, a positioning rod, a lifting hook and a nut for a crossbeam part. The lifting ring contains at least one sleeve joint hole and multiple adjustment holes. The lifting ring is sleeved on the outside of the part to be hoisted through the sleeve joint hole. The minimum inner diameter of the sleeve joint hole is greater than the maximum outer diameter of the part to be hoisted. The multiple adjustment holes are distributed on a closed curve outside the sleeve joint hole. A part of the positioning rod is inserted into the adjustment hole of the lifting ring. The end of the positioning rod further includes an outer thread section with an outer diameter smaller than the inner diameter of the adjustment hole. The nut is connected with the outer thread section on the positioning rod. When the crossbeam part is subjected to chromic acid anodization, the lifting ring, the positioning rod and the nut are assembled on the crossbeam part first, then the lifting hook is inserted into the adjustment holes at different positions through a lifting device at intervals, the crossbeam part is hoisted and turned over, and the internal bubbles are discharged. The application is simple in operation, can timely discharge the bubbles generated in the chromic acid anodization, and ensures the normal generation of the oxide film.

Description

Technical Field

[0001] The invention belongs to the field of aero-engine manufacturing technology, specifically relating to a lifting device with an adjustable angle for a component beam and a method for using the lifting device. Background Technology

[0002] like Figure 1 The image shows a symmetrical crossbeam, composed of cavities of various sizes and shapes. One manufacturing process for the crossbeam is chromic anodizing, where the crossbeam is placed in a chromic acid bath. However, during chromic anodizing, numerous small bubbles are generated on the surface of the crossbeam. Some of these bubbles become trapped on the surface of the cavities due to obstruction from the internal structure of the part, hindering the formation of the oxide film and severely impacting the product's processing quality. Summary of the Invention

[0003] The present invention aims to provide an angle-adjustable hoisting device and method, which is suitable for adjusting the placement angle of crossbeam parts during the chromic acid anodizing surface treatment process. By rotating the angle, small bubbles in the internal cavity of the crossbeam part automatically rise and detach from the surface of the part, thereby completing the formation of an oxide film and meeting the process requirements.

[0004] The technical solution of the present invention is as follows:

[0005] Angle-adjustable hoisting device, including,

[0006] A lifting ring, which includes at least one sleeve hole and multiple adjustment holes, is fitted onto the outside of the part to be lifted through the sleeve hole. The minimum inner diameter of the sleeve hole is greater than the maximum outer diameter of the part to be lifted, and the multiple adjustment holes are distributed on a closed curve on the outside of the sleeve hole.

[0007] The positioning rod, a portion of which is inserted into the adjustment hole of the lifting ring, and the end of the positioning rod also includes an externally threaded section with an outer diameter smaller than the inner diameter of the adjustment hole;

[0008] The hook has two ends, one of which is a hook detachably connected to an adjustment hole, and the other is a connecting section connected to a lifting device.

[0009] A nut, which is connected to the external threaded section on the positioning rod.

[0010] Furthermore, the shape of the socket on the lifting ring is consistent with the outer contour shape of a cross section perpendicular to the length direction on the part to be lifted.

[0011] Furthermore, the length of the positioning rod is two-thirds of the length of the part to be hoisted.

[0012] Furthermore, the outer contour shape of the lifting ring is a rounded rectangle.

[0013] The hoisting method using the aforementioned hoisting device includes,

[0014] Step 1: Place the two lifting rings on the outside of the part to be lifted, with a gap between them;

[0015] Step 2: Place at least two positioning rods parallel between the two lifting rings, with both ends of the positioning rods passing through the adjustment holes of the two lifting rings and connected to nuts;

[0016] Step 3: Connect the hooks of the two hooks to the adjustment holes at different positions on different lifting rings, and then connect the connecting sections of the two hooks to the lifting equipment.

[0017] Alternatively, in step one, the two lifting rings are respectively inserted into and brought together from both ends of the length direction of the part to be lifted, and the center of gravity of the part to be lifted is located between the two lifting rings.

[0018] Compared with the prior art, the present invention has the following characteristics:

[0019] (1) The hoisting device is extremely easy to install and remove on the crossbeam. Simply put the hoisting ring on the left and right ends of the part, separate it with the positioning rod in the middle, and hook the hoisting ring to complete the process.

[0020] (2) According to the process design requirements, by hooking the adjustment holes at different positions of the lifting ring with two hooks, the rotation angle of the part can be changed at will. The operation is very convenient and safe, and the air bubbles in the cavities at different positions on the part can be discharged.

[0021] (3) When the two lifting rings are exactly the same, they can be used to adjust the angle of symmetrical beam parts with equal cross sections. When the two lifting rings are not exactly the same, they can be used to adjust the angle of asymmetrical beam parts with non-equal cross sections. That is, according to the cross section shape of the beam parts, the corresponding socket shape is made and one lifting ring corresponds to one cross section. Attached Figure Description

[0022] Figure 1 A schematic diagram of a beam component that requires chromate anodizing.

[0023] Figure 2 and Figure 3 These are schematic diagrams showing different hoisting angles of the crossbeam;

[0024] Figure 4 Diagram of the hoisting device;

[0025] Figure 5 This is a structural diagram of the lifting ring;

[0026] Figure 6 Here is a structural diagram of the positioning rod;

[0027] Figure 7This is a structural diagram of the hook;

[0028] In the diagram, 1-lifting ring, 2-positioning rod, 3-lifting hook, 4-nut. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0030] To address the problem of small air bubbles obstructing oxide film formation during the chromate anodizing process of the component beam, the basic solution of this invention is: based on the shape characteristics of the component beam, design an adjustable-angle (0~360°) hoisting device, by changing the hanging points at different positions, such as... Figure 2 and Figure 3 As shown, the cavity notches in the crossbeam of the part are tilted upwards. During the surface treatment process, the small bubbles generated by chromic acid anodizing will automatically rise and be discharged from various cavities under the action of buoyancy, avoiding obstruction of oxide film formation. During the chemical reaction in the bath solution, an oxide film is automatically formed on the surface of the part, achieving the process requirements.

[0031] The hoisting device for the crossbeam of the parts, such as Figure 4 As shown, it mainly consists of four parts: two lifting rings (1), two hooks (3), two positioning rods, and four nuts (4).

[0032] The structure of the lifting ring 1 is as follows Figure 5 As shown. The shape of the inner ring (i.e., the socket hole) of the lifting ring 1 is determined according to the cross-sectional shape of the lifting position of the part; while the outer ring of the lifting ring 1 is designed to be rectangular or square with rounded corners. This design makes it easier and safer to load and unload parts.

[0033] The design concept of the lifting ring 1 is applicable to parts that need to rotate during hoisting. For example, for parts of a certain length, the outer contour of the cross section can be conical, arc-shaped, curved, etc. As long as the inner ring shape of the lifting ring 1 is similar in size (slightly larger) to the cross section shape of the hoisting position, it is sufficient.

[0034] The design concept of the lifting ring 1 is also applicable to asymmetrical structures where the cross-sectional shapes and sizes at both ends of the part's length are different. When designing, the inner ring shape of the lifting ring 1 should be similar in size (slightly larger) to the cross-sectional shape of the lifting position.

[0035] Positioning rod 2 as Figure 6As shown. The positioning rod 2 is made of bar stock, with a diameter larger than the adjustment hole diameter of the lifting ring 1, and its length equal to two-thirds of the part's length. The positioning rod 2 separates the two lifting rings 1 by a certain distance, ensuring the part achieves stability and safety during the lifting process.

[0036] Hook 3 Figure 7 As shown. The material of the hook 7 is bar stock, the diameter of its lower end is smaller than the diameter of the adjustment hole of the lifting ring 1, and its upper end is bent into a circle or other shape so that it can be hooked into the hook of the crane.

[0037] The specific manufacturing process and features of the hoisting device for the component beam are described below:

[0038] 1. Hanging ring 1 Figure 5 As shown, steel plate is selected as the material. The shape of the inner ring fitting hole is determined according to the cross-sectional shape of the part to be lifted, and its size is slightly larger for easy loading and unloading. The outer ring is rectangular or square with rounded corners. A Φ30 adjustment hole is drilled evenly between the inner and outer rings. The thickness of the lifting ring 1 is determined according to the weight of the part to be lifted. If the weight is ≤50kg, the thickness is 3mm. The heavier the weight, the larger the outer ring, thickness, and adjustment hole size should be.

[0039] 2. Positioning rod 2 as follows Figure 6 As shown. The thread size of the screws at both ends of the positioning rod 2 is slightly smaller than the diameter of the adjustment hole of the lifting ring 1. The diameter of the middle part of the positioning rod 2 is larger than the diameter of the adjustment hole. The lifting ring 1 and the positioning rod 2 are joined together by four hexagonal nuts 4. The length of the positioning rod 2 is also determined according to the length of the part, and the selection principle is: the length of the positioning rod 2 = two-thirds of the length of the part.

[0040] 3. As shown in the figure, the selection principle for hook 3 is: the heavier the weight, the larger the diameter.

[0041] When the crossbeam parts are immersed in the chromic acid anodizing bath, two lifting rings 1 are first fitted onto different cross-sectional positions along the length of the crossbeam parts. Then, a positioning rod 2 is inserted into the adjustment hole on the lifting ring 1, and a nut 4 is used to lock the positioning rod 2 and the lifting ring 1 from the outside. After a period of time, a lifting device with a hook 3 is used to insert into the adjustment hole at different positions on the lifting ring 1 to flip the crossbeam parts so that the cavities at different positions face upwards, expelling the air bubbles generated during chromic acid anodizing, thus completing the formation of an oxide film on the surface of the crossbeam parts.

[0042] Contents not described in detail in this specification are prior art known to those skilled in the art. Although illustrative specific embodiments of the invention have been described above to facilitate understanding by those skilled in the art, it should be understood that the invention is not limited to the scope of the specific embodiments. Various modifications are readily apparent to those skilled in the art as long as they fall within the spirit and scope of the invention as defined and determined by the appended claims, and all inventions utilizing the concept of this invention are protected.

Claims

1. A hoisting method, characterized in that: The device used for adjusting the placement angle of crossbeam parts during the chromic acid anodizing surface treatment process involves rotating the crossbeam part to allow small air bubbles inside the part to automatically rise and detach from the surface, thus completing the formation of the oxide film. The lifting device includes: The lifting ring (1) includes at least one sleeve hole and multiple adjustment holes. The lifting ring (1) is sleeved on the outside of the part to be lifted through the sleeve hole. The minimum inner diameter of the sleeve hole is greater than the maximum outer diameter of the part to be lifted. The multiple adjustment holes are distributed on a closed curve on the outside of the sleeve hole. Positioning rod (2), a part of which is inserted into the adjustment hole of the lifting ring (1), and the end of the positioning rod (2) also includes an external thread section with an outer diameter smaller than the inner diameter of the adjustment hole; The hook (3) has two ends, which are hooks that are detachably connected to the adjustment hole and connecting sections that are connected to the lifting equipment, respectively. Nut (4), which is connected to the external thread section on the positioning rod (2); Lifting methods include, Step 1: Place the two lifting rings (1) on the outside of the part to be lifted at intervals; Step 2: At least two positioning rods (2) are arranged in parallel between the two lifting rings (1), and the two ends of the positioning rods (2) pass through the adjustment holes of the two lifting rings (1) and are connected to the nuts (4); Step 3: Connect the hooks of the two hooks (3) to the adjustment holes at different positions on the different lifting rings (1), and then connect the connecting sections of the two hooks (3) to the lifting equipment. After a period of time, use the lifting equipment in conjunction with the hooks (3) to insert into the adjustment holes at different positions on the lifting rings (1), flip the crossbeam parts so that the cavities at different positions face upwards, and discharge the bubbles generated by chromic acid anodizing, thus completing the formation of the oxide film on the surface of the crossbeam parts.

2. The hoisting method according to claim 1, characterized in that: The shape of the sleeve hole on the lifting ring (1) is consistent with the outer contour shape of a cross section perpendicular to the length direction on the part to be lifted.

3. The hoisting method according to claim 1, characterized in that: The length of the positioning rod (2) is two-thirds of the length of the part to be hoisted.

4. The hoisting method according to claim 1, characterized in that: The outer contour of the lifting ring (1) is a rounded rectangle.

5. The hoisting method according to claim 1, characterized in that: In step one, the two lifting rings (1) are respectively inserted into and brought together from both ends of the length direction of the part to be lifted, and the center of gravity of the part to be lifted is between the two lifting rings (1).

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