Solid solution fastening mechanism of pod U-shaped structure casting

Abstract

The utility model discloses a solid solution fastening mechanism of a pod U-shaped structure casting, which comprises a solid solution furnace storage basket, a plurality of mounting grooves are distributed at the bottom of the solid solution furnace storage basket, and water permeable grooves are distributed on the four walls of the solid solution furnace storage basket; the support plates are adjusted to be erected upwards and abut against the opposite inner walls of the U-shaped arm of the casting respectively, support plate bottom feet with enlarged sections are arranged at the bottoms of the support plates respectively, and the front ends and the rear ends of the support plate bottom feet are fixed to the bottom wall of the solid solution furnace storage basket through bottom foot bolts respectively; the fastening screws are connected between the two adjusting support plates, symmetrically located on the front side and the rear side of the U-shaped arm of the casting, penetrate through the through holes of the adjusting support plates respectively and are connected with support plate nuts in a screwed mode respectively, and the support plate nuts are pressed on the opposite inner walls of the adjusting support plates respectively; the pressing plates are located on the outer sides of the adjusting support plates respectively and pressed on the outer wall of the U-shaped arm of the casting, the fastening screws penetrate through the pressing plate through holes respectively, the outer ends of the fastening screws are connected with pressing plate nuts in a screwed mode respectively, and the pressing plate nuts are pressed on the outer walls of the pressing plates respectively.

Description

Technical Field

[0001] The utility model relates to a casting solid solution tooling, in particular to a solid solution fastening mechanism for a pod U-shaped structural casting, and belongs to the technical field of casting auxiliary equipment. Background Art

[0002] A pod is a streamlined nacelle section that is equipped with certain airborne equipment and suspended under the fuselage or wing. The U-shaped aluminum alloy casting is the main component of the pod and is assembled in the middle position. It mainly protects, supports and fixes the internal components. The casting accuracy of the entire component directly affects the processing accuracy of the product, thereby affecting the performance, accuracy and life of the pod.

[0003] The common ends of the U-shaped aluminum alloy parts are connected, and the two arms extend downward or upward. The wall thickness of the two arms is only 4-5mm. After casting, it needs to be solution treated. Traditionally, multiple castings are stacked in a frame, and the frame is heated into a solution furnace to a high temperature single-phase zone and kept at a constant temperature, so that the excess phase is fully dissolved into the solid solution. After being taken out, it is quickly cooled in water to obtain a supersaturated solid solution to improve the toughness and plasticity of the alloy casting.

[0004] Because castings follow thermal expansion and contraction, and the dendrite structure of the casting will change when the temperature reaches the solubility phase line, the structural change will be affected by the density of the dendrites inside the casting. The structural change of the denser part will be small, and the smaller part will be large, resulting in deformation. Especially after the U-shaped aluminum alloy parts are solution treated, the dimensional accuracy of the casting is difficult to guarantee. In particular, the U-shaped thin-walled arms with a thickness of less than 5mm have a greater risk of deformation, and the direction of deformation cannot be predicted. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification of this application and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above problems and / or the problems existing in the prior art, the present utility model is proposed.

[0007] The purpose of the utility model is to overcome the problems existing in the prior art and provide a solid solution fastening mechanism for a U-shaped structural casting of a nacelle, which can reduce the deformation risk of the U-shaped structural casting during the solid solution and cooling process of the nacelle U-shaped structural casting, improve the structural accuracy of the U-shaped structural casting, and ensure the quality of the casting.

[0008] In order to solve the above technical problems, the solid solution fastening mechanism of the nacelle U-shaped structural casting of the utility model comprises:

[0009] The solid solution furnace storage basket has an opening at the top, a plurality of mounting grooves evenly distributed on the bottom wall, and a plurality of water-permeable grooves evenly distributed on the four walls;

[0010] The support plate is adjusted to stand upright and respectively abut against the inner walls of the U-shaped arms of the casting, and the bottom is provided with support plate feet with enlarged cross-sections, and the front and rear ends of the support plate feet are respectively fixed to the bottom of the solution furnace storage basket by foot bolts;

[0011] A fastening screw is connected between the two adjusting bracket plates, symmetrically located at the front and rear sides of the U-shaped arm of the casting, passes through the through holes of the adjusting bracket plates respectively and is screwed with bracket plate nuts respectively, and each bracket plate nut is pressed against the inner wall facing the adjusting bracket plate respectively;

[0012] The pressure plates are respectively located on the outside of the adjustment bracket plates and are respectively pressed on the outer walls of the U-shaped arms of the castings. The fastening screws pass through the through holes of the pressure plates respectively. The outer ends of the fastening screws are respectively screwed with pressure plate nuts, and the pressure plate nuts are respectively pressed against the outer walls of the pressure plates.

[0013] Furthermore, two transverse pads are abutted against the bottom wall of the solid solution furnace storage basket, and the two transverse pads are respectively located below the front and rear ends of the bracket plate base, and transverse slits are respectively provided along the axes of the transverse pads. Each base bolt passes through the mounting groove of the bottom wall of the solid solution furnace storage basket and the transverse slit of the transverse pad, and the lower end is screwed on the base nut and locked.

[0014] Furthermore, there are four fastening screws distributed in a rectangular shape.

[0015] Furthermore, the top centers of the four walls of the solution furnace storage basket are respectively provided with lifting ears.

[0016] Compared with the prior art, the utility model has achieved the following beneficial effects: 1. The use of special solid solution tooling solves the problem of difficult clamping of U-shaped castings, making it easy to move them into the furnace for solid solution and put them into cooling water for rapid cooling after being moved out. The two U-shaped arms of the castings can be reliably clamped during the whole process, effectively reducing uncontrollable deformation during the solid solution process and the cooling process after solid solution;

[0017] 2. Use special solid solution tooling to make the operation process more standardized, avoid deformation of weak parts of castings caused by non-standard manual operation, and ensure the quality of castings;

[0018] 3. Since the two U-shaped arms are reliably fixed during the solution process, the difficulty of shaping after solution can be greatly reduced, the uncontrollable risks can be reduced, the production efficiency of castings can be improved, and the labor intensity of operators can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. The drawings are only provided for reference and explanation, not for limiting the present utility model. Among them:

[0020] Figure 1 This is a three-dimensional view of the U-shaped structural casting of the pod before being fastened and clamped;

[0021] Figure 2 This is a three-dimensional view of the U-shaped structural casting of the pod after being fastened and clamped;

[0022] Figure 3 A three-dimensional diagram of the working state of the utility model;

[0023] Figure 4 for Figure 3 Exploded diagram of

[0024] In the figure: 1. Adjustment bracket plate; 2. Bracket plate foot; 3. Pressure plate; 4. Fastening screw; 5. Bracket plate nut; 6. Pressure plate nut; 7. Solution furnace storage basket; 7a. Lifting ear; 8. Horizontal pad; 8a. Horizontal slit; 9. Foot bolt; 10. Washer; 11. Foot nut; 12. Nacelle U-shaped structure casting. DETAILED DESCRIPTION

[0025] In the following description of the utility model, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not mean that the device must have a specific direction.

[0026] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific figures. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] like Figures 1 to 4As shown, the solid solution fastening mechanism of the U-shaped structure casting of the pod of the utility model includes an adjustment bracket plate 1, a pressure plate 3, a fastening screw 4, a solid solution furnace storage basket 7 and a transverse pad 8. A plurality of mounting grooves are evenly distributed on the bottom wall of the solid solution furnace storage basket 7, a plurality of water-permeable grooves are evenly distributed on the four walls of the solid solution furnace storage basket 7, and a lifting ear 7a is respectively provided at the center of the upper edge of the four walls of the solid solution furnace storage basket 7. The common ends of the pod U-shaped structure casting 12 are connected, and the two U-shaped arms are parallel to each other and extend downward.

[0029] The adjusting bracket plate 1 is erected upward and respectively rests against the inner walls of the U-shaped arms of the U-shaped structural casting 12 of the nacelle. The bottom of the adjusting bracket plate 1 is provided with bracket plate feet 2 with enlarged cross-sections. The front and rear ends of the bracket plate feet 2 are respectively provided with foot fixing holes. The foot bolts 9 are inserted into the foot fixing holes to fix them on the solid solution furnace storage basket 7.

[0030] The two adjusting bracket plates 1 are connected to each other by fastening screws 4. There are four fastening screws 4 distributed in a rectangular shape. Two fastening screws 4 are located on the front side of the U-shaped arm of the nacelle U-shaped structure casting 12, and the other two fastening screws 4 are located on the rear side of the U-shaped arm. The fastening screws 4 pass through the through holes of the adjusting bracket plates respectively and are screwed with bracket plate nuts 5 respectively. Each bracket plate nut 5 is pressed on the facing inner walls of the adjusting bracket plates 1 to fix the inner walls of the two U-shaped arms.

[0031] Pressure plates 3 are provided on the outer sides of the adjusting bracket plates 1, and the two pressure plates 3 are pressed on the outer walls of the U-shaped arms respectively. The fastening screws 4 pass through the through holes of the pressure plates respectively. The outer ends of the fastening screws 4 are respectively screwed with pressure plate nuts 6, and the pressure plate nuts 6 are respectively pressed on the outer walls of the pressure plates 3 to fix the outer walls of the two U-shaped arms.

[0032] Two transverse pads 8 are abutted against the bottom wall of the solid solution furnace storage basket 7. The two transverse pads 8 are respectively located below the front and rear ends of the bracket plate base 2. Transverse slits 8a are respectively provided along the axes of the transverse pads 8 to facilitate adapting to the spacing between the two U-shaped arms; each base bolt 9 passes through the bottom wall mounting groove of the solid solution furnace storage basket 7 and the transverse slit 8a of the transverse pad 8, and the lower ends are respectively screwed on the base nuts 11 for locking, and a gasket 10 is provided above the base nut 11.

[0033] The material of the entire tooling is 0Cr17ni9Ti, which is subjected to a secondary annealing treatment. During the heating process, the expansion coefficient is close to that of the nacelle U-shaped structure casting 12, eliminating the influence of the tooling on the casting structure during the heat treatment process.

[0034] Tighten the bracket plate nut 5 and the pressure plate nut 6, and clamp the two U-shaped arms of the pod U-shaped structure casting 12 by adjusting the bracket plate 1 and the pressure plate 3, and then fix the bracket plate foot 2 on the solid solution furnace storage basket 7 through the foot bolts 9 and the foot nuts 11, and lift the solid solution furnace storage basket 7 as a whole through the lifting ears 7a, wherein the fixed pod U-shaped structure casting 12 and its fastening tooling are sent into the solid solution furnace as a whole to heat up, and then after the insulation reaches the set time, they are taken out and put into the cooling pool as a whole to cool down, and the cooling water quickly enters the basket from the water-permeable grooves on the four walls of the solid solution furnace storage basket 7 and the installation grooves on the bottom wall to quickly cool the pod U-shaped structure casting 12.

[0035] The above description is only the preferred feasible embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model, but does not limit the scope of patent protection of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. In addition to the above embodiments, the utility model can also have other implementation modes without departing from the spirit and scope of the utility model. The utility model will also have various changes and improvements. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents. The technical features not described in the utility model can be achieved by or using existing technologies, which will not be repeated here.

Claims

1. A solid solution fastening mechanism for a nacelle U-shaped structural casting, characterized in that: include: The solid solution furnace storage basket has an opening at the top, a plurality of mounting grooves evenly distributed on the bottom wall, and a plurality of water-permeable grooves evenly distributed on the four walls; The support plate is adjusted to stand upright and respectively abut against the inner walls of the U-shaped arms of the casting, and the bottom is provided with support plate feet with enlarged cross-sections, and the front and rear ends of the support plate feet are respectively fixed to the bottom of the solution furnace storage basket by foot bolts; A fastening screw is connected between the two adjusting bracket plates, symmetrically located at the front and rear sides of the U-shaped arm of the casting, passes through the through holes of the adjusting bracket plates respectively and is screwed with bracket plate nuts respectively, and each bracket plate nut is pressed against the inner wall facing the adjusting bracket plate respectively; The pressure plates are respectively located on the outside of the adjustment bracket plates and are respectively pressed on the outer walls of the U-shaped arms of the castings. The fastening screws pass through the through holes of the pressure plates respectively. The outer ends of the fastening screws are respectively screwed with pressure plate nuts, and the pressure plate nuts are respectively pressed against the outer walls of the pressure plates.

2. The solid solution fastening mechanism of the nacelle U-shaped structural casting according to claim 1 is characterized in that: Two transverse pads are abutted against the bottom wall of the solid solution furnace storage basket. The two transverse pads are respectively located below the front and rear ends of the bracket plate base. Transverse slits are respectively provided along the axes of the transverse pads. Each base bolt passes through the mounting groove of the bottom wall of the solid solution furnace storage basket and the transverse slit of the transverse pad, and the lower ends are respectively screwed with base nuts for locking.

3. The solid solution fastening mechanism of the nacelle U-shaped structural casting according to claim 1 is characterized in that: The fastening screws are four and are distributed in a rectangular shape.

4. The solid solution fastening mechanism of the nacelle U-shaped structural casting according to claim 1 is characterized in that: The top centers of the four walls of the solid solution furnace storage basket are respectively provided with lifting ears.

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