CN110789746A - L-shaped mounting rack for light high-strength rail control cabin - Google Patents
L-shaped mounting rack for light high-strength rail control cabin Download PDFInfo
- Publication number
- CN110789746A CN110789746A CN201911026186.7A CN201911026186A CN110789746A CN 110789746 A CN110789746 A CN 110789746A CN 201911026186 A CN201911026186 A CN 201911026186A CN 110789746 A CN110789746 A CN 110789746A
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- China
- Prior art keywords
- plate
- lower bottom
- bottom plate
- mounting
- side edge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
Abstract
The invention relates to a light high-strength rail control cabin L-shaped mounting frame, and aims to solve the problem that the rigidity and weight of the mounting frame and a fixed support cannot meet the requirements of test tasks while the mounting frame and the fixed support are reliably fixed in the prior art. The invention comprises an annular product mounting plate, a rectangular lower bottom plate, a plurality of connecting plates arranged between the product mounting plate and the lower bottom plate, and a reinforcing plate arranged between two outermost connecting plates and the lower bottom plate; the inner diameter of the product mounting plate is matched with the major diameter of the rail control cabin; the product mounting plate is provided with a mounting hole, an anti-swing hoisting point hole and a buffering hoisting point hole; the product mounting plate and the connecting plate are positioned on the same plane; the connecting plate is vertically connected with the rear side edge of the lower bottom plate; the lower bottom plate is provided with at least two bearing clamping grooves; the lower edge of the reinforcing plate is vertically and fixedly connected with the side edge of the lower bottom plate; the rear side edge of the reinforcing plate is vertically and fixedly connected with the outer side edge of the connecting plate; the length, width and height of the mounting rack are not less than 2100X 350X 2200 mm.
Description
Technical Field
The invention relates to a test device of an aerospace engine, in particular to an L-shaped mounting rack of a light high-strength rail control cabin.
Background
The aircraft cabin assembly is subjected to ground heat insulation prevention and cabin separation combined assessment test, the test process is that the aircraft cabin assembly is horizontally fixed on a fixed support through an L-shaped mounting rack after butt joint is completed, the L-shaped mounting rack needs to bear 8000N axial force and 4500Ngm overturning moment in the ground heat insulation prevention test process according to task requirements, the aircraft cabin assembly also needs to participate in subsequent separation tests after the ground heat insulation prevention ignition test is completed, a hoisting point needs to bear an impact load not less than 2.5T in the separation process, and therefore the L-shaped mounting rack needs to have high enough strength and rigidity; when the aircraft actually flies and separates in the atmosphere, other tools are not installed on the rail control cabin, in order to be closer to the separation effect of real products, the design weight of the L-shaped mounting rack is as small as possible and not larger than 80kg, and the L-shaped mounting rack with high strength, high rigidity and light weight needs to be designed to meet the requirements of test tasks.
However, the prior art does not meet the task requirements.
Disclosure of Invention
The invention aims to solve the problem that the rigidity and the weight of a mounting frame and a fixed support cannot meet the requirements of test tasks while the mounting frame and the fixed support are reliably fixed in the prior art, and provides the L-shaped mounting frame for the light high-strength rail control cabin.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in order to meet the ground heat-insulation test run requirement and the lifting separation requirement of the cabin assembly, the butt joint tool of the cabin assembly and the test platform is designed to be of an L-shaped structure, and the L-shaped structure is L-shaped when viewed from the side.
The invention relates to a light high-strength rail control cabin L-shaped mounting rack which is characterized in that: the product mounting plate is arranged on the outer side of the product mounting plate, and the rectangular lower bottom plate is arranged on the outer side of the product mounting plate;
the inner diameter of the product mounting plate is matched with the major diameter of the rail control cabin;
the product mounting plate is provided with a mounting hole, an anti-swing hoisting point hole and a buffering hoisting point hole;
the product mounting plate and the connecting plate are positioned on the same plane;
the connecting plate is vertically connected with the rear side edge of the lower bottom plate;
the lower bottom plate is provided with at least two bearing clamping grooves;
the lower edge of the reinforcing plate is vertically and fixedly connected with the side edge of the lower bottom plate; the rear side edge of the reinforcing plate is vertically and fixedly connected with the outer side edge of the connecting plate;
the length, width and height of the mounting rack are not less than 2100X 350X 2200 mm.
And further, the reinforcing ribs are arranged between the rest connecting plates except the two outermost connecting plates and the lower bottom plate.
Furthermore, the device also comprises a measurement and control plug mounting hole arranged on the reinforcing rib.
Furthermore, in the process of ground hot test, in order to resist the axial thrust and the overturning moment generated by the engine, a plurality of overturning-preventing pressure heads are uniformly arranged on the front side edge of the lower bottom plate.
Further, in order to reduce the weight of the L-shaped mounting frame and meet the test requirement, a plurality of lightening holes are formed in the connecting plate and the lower bottom plate.
Furthermore, the L-shaped mounting frame is made of 7075 aluminum alloy material.
Further, in order to increase the rigidity and the strength of the L-shaped mounting frame, the L-shaped mounting frame adopts a non-welded integrated processing structure.
The invention has the beneficial effects that:
the L-shaped mounting frame is characterized in that the annular product mounting plate is connected with the rectangular lower bottom plate through the connecting plates, and the reinforcing plate is arranged between the connecting plates and the lower bottom plate, so that the rigidity of the mounting frame is improved; and a plurality of lightening holes are arranged on the connecting plate and the lower bottom plate, so that the weight requirement in the test is met.
Drawings
FIG. 1 is a perspective view of an L-shaped mounting bracket for a lightweight high-strength rail-controlled cabin of the present invention;
FIG. 2 is a front view of an L-shaped mounting bracket for a lightweight high-strength rail-controlled cabin of the present invention;
FIG. 3 is a left side view of an L-shaped mounting bracket for a lightweight high strength rail-controlled cabin of the present invention;
fig. 4 is a top view of a lightweight high strength rail-controlled pod L-mount of the present invention.
In the figure, 1-a product mounting plate, 11-a mounting hole, 12-an anti-swing hoisting point hole, 13-a buffer hoisting point hole, 2-a lower bottom plate, 21-a force bearing clamping groove, 22-an anti-overturn pressure head, 23-a lightening hole, 3-a connecting plate, 4-a reinforcing plate, 5-a reinforcing rib and 51-a measurement and control plug mounting hole.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, a light weight and high strength rail-controlled cabin L-shaped installation frame according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following detailed description. It should be noted that: the drawings are in simplified form and are not to precise scale, the intention being solely for the convenience and clarity of illustrating embodiments of the invention; second, the structures shown in the drawings are often part of actual structures.
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a light high-strength rail control cabin L-shaped mounting frame, which is shown by combining figures 1 to 4 and comprises an annular product mounting plate 1, a rectangular lower bottom plate 2, a plurality of connecting plates 3 arranged between the product mounting plate 1 and the lower bottom plate 2 and a reinforcing plate 4 arranged between two connecting plates 3 at the outermost side and the lower bottom plate 2;
the inner diameter of the product mounting plate 1 is matched with the large diameter of the rail control cabin, a mounting hole 11, an anti-swing hoisting point hole 12 and a buffering hoisting point hole 13 are formed in the product mounting plate 1, and the mounting hole 11 is used for butting the product mounting plate with the large diameter end of the rail control cabin; the rail accuse cabin back passes through special mounting hole, and L type mounting bracket butt joint, the butt joint mode is 8 technology bolts and technology nut, through 8F 18B low impact separator mounting holes in rail accuse cabin body bottom, is connected the cabin body with L type mounting bracket. The flexible temperature control cover is installed to rail accuse cabin bottom, and L type erection timing internal diameter size is greater than the biggest envelope of temperature control cover, avoids the temperature control cover, prevents to touch bottom temperature control cover. In order to meet the requirement of light weight, the size of the mounting surface of the L-shaped mounting frame is consistent with the interface of the rail control cabin as much as possible.
Through the force analysis, the maximum reduction tension inefficacy risk is come through 5 points load on the mounting bracket when the separation falls. Therefore, 5 buffering hoisting point holes 13 are formed in the mounting plate, the optimal design is carried out according to ANSYS, 5 buffering hoisting point holes 13 are distributed at specific angles, the top load-bearing structure can be increased if the distribution angle of the buffering hoisting point holes 13 is too large, the weight of the L-shaped mounting frame is greatly increased, the stress environment of the L-shaped mounting frame is abnormally severe when the L-shaped mounting frame falls down and is recovered if the buffering hoisting point holes are too small in distribution 13, great safety risks are realized, meanwhile, the lamp array support and the lifting appliance can also have certain influence on the buffering hoisting point holes 13, the stress uniformity is comprehensively considered, the position interference of an infrared lamp array, the mounting mode of the lifting appliance and product quality factors, and the position of the 5 buffering hoisting point holes 13 is finally designed. Meanwhile, the top of the L-shaped mounting frame is widened and thickened, and the position of the buffering hoisting point hole 13 is designed to be close to the inner diameter direction according to stress analysis, so that the buffering hoisting point hole can still keep good stress characteristics in the worst stress environment; anti-swing hoisting point holes 12 are formed in two sides of the 5 buffering hoisting point holes 13, the installation of a lifting appliance and the interference condition with a ground thermal environment device are considered in the design of the anti-swing hoisting point holes 12, and meanwhile, the positions of the two anti-swing hoisting point holes 12 are designed at the positions with the minimum stress, so that the overall structural strength and the rigidity of the L-shaped mounting frame are not influenced.
The product mounting plate 1 and the connecting plate 3 are positioned on the same plane; the connecting plate 3 is vertically connected with the rear side edge of the lower bottom plate 2; the lower bottom plate 2 is used for connecting and fixing the rail control cabin with the fixed bracket;
the lower bottom plate 2 is provided with at least two force bearing clamping grooves 21, the force bearing clamping grooves 21 are connected with force bearing bosses on the fixed support in a clamping manner, and the smooth clamping and separation are ensured, so that the L-shaped mounting frame and the fixed support are favorably fixed and separated smoothly, and the interference is avoided;
the lower edge of the reinforcing plate 4 is vertically and fixedly connected with the side edge of the lower bottom plate 2; the rear side edge of the reinforcing plate 4 is vertically and fixedly connected with the outer side edge of the connecting plate 3;
the length, width and height of the mounting rack are not less than 2100X 350X 2200 mm.
In order to ensure the strength and rigidity of the mounting frame, reinforcing ribs 5 are arranged at positions with larger stress between the rest connecting plates 3 and the lower bottom plate 2 except the two connecting plates at the outermost side. The reinforcing rib 5 is provided with a measuring and controlling plug mounting hole 51.
Evenly be provided with a plurality of indenters 22 of preventing toppling on the preceding side of lower plate 2, the design of preventing toppling indenter 22 has considered hydraulic pressure manipulator's the angle that compresses tightly and has expanded, has both guaranteed that there is sufficient area that compresses tightly, ensures its expansion angle simultaneously and does not influence the separation process of L type mounting bracket and fixed bolster.
Through ANSYS simulation optimization design, a plurality of lightening holes 23 are arranged at positions with smaller stress on the connecting plate 3 and the lower bottom plate 2.
In order to meet the requirements of high strength, high rigidity and light weight, the L-shaped mounting frame is made of 7075 aluminum alloy material. The material is high-strength heat-treatable alloy, has good mechanical property, is easy to process and good in wear resistance, also has good corrosion resistance and oxidation resistance, can keep good performance in a ground hot trial environment, and has the tensile strength sigma b of 524MPa, the yield strength sigma 0.2 of 455MPa and the density rho of 2.81g/cm3 of 2.81t/m3 after quenching treatment and natural aging treatment.
The L-shaped mounting frame adopts a non-welded integrated processing structure. Together with the fixed cable plug and socket, the total weight is about 75 kg. And hoisting holes, related electric connector mounting holes and related cable fixing holes are designed on the L-shaped mounting frame.
During the separation test, the L-shaped mounting bracket is lifted together with the cabin assembly.
Claims (7)
1. The utility model provides a light-duty high strength rail accuse cabin L type mounting bracket which characterized in that: the product mounting plate comprises an annular product mounting plate (1), a rectangular lower bottom plate (2), a plurality of connecting plates (3) arranged between the product mounting plate (1) and the lower bottom plate (2), and a reinforcing plate (4) arranged between two outermost connecting plates (3) and the lower bottom plate (2);
the inner diameter of the product mounting plate (1) is matched with the major diameter of the rail control cabin;
the product mounting plate (1) is provided with a mounting hole (11), an anti-swing hoisting point hole (12) and a buffering hoisting point hole (13);
the product mounting plate (1) and the connecting plate (3) are positioned on the same plane;
the connecting plate (3) is vertically connected with the rear side edge of the lower bottom plate (2);
the lower bottom plate (2) is provided with at least two bearing clamping grooves (21);
the lower edge of the reinforcing plate (4) is vertically and fixedly connected with the side edge of the lower bottom plate (2); the rear side edge of the reinforcing plate (4) is vertically and fixedly connected with the outer side edge of the connecting plate (3);
the length, width and height of the mounting rack are not less than 2100X 350X 2200 mm.
2. The L-shaped light high-strength rail-controlled cabin mounting rack as claimed in claim 1, wherein: and the reinforcing ribs (5) are arranged between the rest connecting plates (3) except the two outermost connecting plates and the lower bottom plate (2).
3. The L-shaped light high-strength rail-controlled cabin mounting rack as claimed in claim 2, wherein: the test and control plug is characterized by further comprising a test and control plug mounting hole (51) formed in the reinforcing rib (5).
4. The L-shaped light high-strength rail-controlled cabin mounting rack as claimed in claim 3, wherein: a plurality of overturn-preventing pressure heads (22) are uniformly arranged on the front side edge of the lower bottom plate (2).
5. The L-shaped light high-strength rail-controlled cabin mounting rack as claimed in claim 4, wherein: the connecting plate (3) and the lower bottom plate (2) are provided with a plurality of lightening holes (23).
6. The L-shaped light high-strength rail-controlled cabin mounting rack as claimed in claim 5, wherein: the L-shaped mounting frame is made of 7075 aluminum alloy material.
7. The L-shaped light high-strength rail-controlled cabin mounting frame as claimed in claim 6, wherein: the L-shaped mounting frame adopts a non-welded integrated processing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026186.7A CN110789746B (en) | 2019-10-25 | 2019-10-25 | L-shaped mounting rack for light high-strength rail control cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026186.7A CN110789746B (en) | 2019-10-25 | 2019-10-25 | L-shaped mounting rack for light high-strength rail control cabin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110789746A true CN110789746A (en) | 2020-02-14 |
| CN110789746B CN110789746B (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911026186.7A Active CN110789746B (en) | 2019-10-25 | 2019-10-25 | L-shaped mounting rack for light high-strength rail control cabin |
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