CN201974279U - Excitation head limiting device for fatigue test of helicopter blades - Google Patents
Excitation head limiting device for fatigue test of helicopter blades Download PDFInfo
- Publication number
- CN201974279U CN201974279U CN 201020701291 CN201020701291U CN201974279U CN 201974279 U CN201974279 U CN 201974279U CN 201020701291 CN201020701291 CN 201020701291 CN 201020701291 U CN201020701291 U CN 201020701291U CN 201974279 U CN201974279 U CN 201974279U
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- wallboard
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- limiting plate
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Abstract
The utility model belongs to a fatigue test technology for helicopter blades, relating to the improvement of an excitation head limiting device in a sliding chute mechanism of a blade fatigue test stand. The excitation head limiting device is characterized in that the limiting device comprises two limiting walls which are in the same structure, are symmetrical and are parallel to each other; each limiting wall comprises a limiting support, a limiting plate (5), a puller screw rod (6), a puller screw rod locking nut (7), a tensioning screw rod (8) and a tensioning screw rod locking nut (9); and the limiting support comprises a bottom plate (1), three square steels (2), a top plate (3) and a wall plate (4). The excitation head limiting device can conveniently adjust distances between the limiting walls and an excitation head, avoids the frequency dismantling of the excitation head and greatly improves the test efficiency.
Description
Technical field
The utility model belongs to helicopter blade torture test technology, relates to the improvement to exciting head stop means in the blade fatigue test board slide way mechanism.
Background technology
Rotor system is the important assurance of helicopter lift, and main blade is the vitals of rotor system, and the length of its fatigue lifetime directly influences deciding the longevity of whole helicopter.Be the true installation environment of simulation test piece as far as possible, when carrying out torture test, the direction of motion when needing the vibration of control testpieces promptly limits the swing of blade left and right directions, can only have up and down and the motion of fore-and-aft direction.Fore-and-aft direction is the axis direction of the blade of horizontal positioned, and above-below direction is a vertical direction, and left and right directions is the horizontal direction perpendicular to blade-span axis.In view of its motion requirement characteristics, slide way mechanism is optimal implementation.In the existing testing table slide way mechanism, exciting head stop means is the one-piece construction of hexahedral shape, forms stop means by two sides, left and right sides spacing walls, and the exciting head is between the spacing walls of two sides.Its machining and installation requirement are very high, the two sides spacing walls is formed chute, gap adjustment difficulty between chute and the exciting head is big, need to adjust the spacer thickness of exciting head both sides to adjust the spacing between two sides spacing walls and the exciting head, when adjusting the pad of exciting head both sides, must dismantle the exciting head and just can carry out, regulate very inconveniently, test efficiency is reduced.
Summary of the invention
The purpose of this utility model is: provide a kind of exciting head stop means that is used for the helicopter blade torture test of being convenient to adjust spacing walls and exciting head spacing, to improve test efficiency.
The technical solution of the utility model is: the exciting head stop means that is used for the helicopter blade torture test, it is characterized in that, stop means is made up of two structure spacing walls identical and symmetrical, that be parallel to each other, and each spacing walls is made up of limiting bracket, limiting plate, fastening screw, fastening screw set nut, stretching screw and stretching screw set nut; Limiting bracket is made up of base plate, three square steel, top board and wallboards; Base plate is a rectangular slab, periphery at base plate has screw hole, by screw base plate is fixed on the testing table, the both sides of exciting head, the length direction of base plate and the parallel axes of being tested blade, identical three square steel of length are arranged in parallel into a row along the length direction of base plate, the lower end of three square steel and the upper surface of base plate are welded as integral body, the upper end of three square steel and the lower surface of top board are welded as integral body, wallboard is a rectangular slab, the medial surface of the outside surface of wallboard and three square steel is fitted and is welded as integral body, rectangular area between two square steel on the wallboard, have from top to bottom and to form a line, 6 through holes that spacing equates, start at from above, first, the 3rd, the the 4th and the 6th hole is a unthreaded hole, the second and the 4th hole is a threaded hole, and two row through holes in two rectangular areas form 6 holes of working, all maintenance levels of center line in the hole of whenever working; Limiting plate is a rectangular slab, the outside surface of limiting plate is relative with the inside surface of wallboard, two row, 6 row blind holes are arranged on limiting plate, on position and the wallboard of above-mentioned two row, 6 row blind holes two be listed as, 6 holes of working are corresponding, start at from above, the first, the 3rd, the 4th and the 6th hole is a tapped blind hole in the every row blind hole of limiting plate, the second and the 4th hole is the light blind hole, have 8 stretching screws, each stretching screw is screwed in the tapped blind hole corresponding on the limiting plate after passing a unthreaded hole of wallboard, and the stretching screw set nut is locked at stretching screw on the outside surface of wallboard; Have 4 fastening screws, each fastening screw is screwed into a threaded hole of wallboard, and the termination of fastening screw enters in the light blind hole corresponding on the limiting plate, and the fastening screw set nut is locked at fastening screw on the outside surface of wallboard.
The utility model has the advantages that: can adjust the spacing of spacing walls and exciting head easily, avoid frequent dismounting exciting head, improve test efficiency greatly.After adopting this use novel, the time of adjusting the spacing of spacing walls and exciting head only is 2 hours, and present stop means is adjusted at least 2 days time of spacing walls and the spacing of exciting head, and adjustment efficient has improved more than 8 times.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1, and spacing walls following among Fig. 2 is the K-K cut-open view of Fig. 1.Dotted line among the figure is represented exciting head 10, and underproof blade is represented in double dot dash line.
Embodiment
Below the present invention is described in further details.Referring to Fig. 1,2, the exciting head stop means that is used for the helicopter blade torture test, it is characterized in that, stop means is made up of two structure spacing walls identical and symmetrical, that be parallel to each other, and each spacing walls is made up of limiting bracket, limiting plate 5, fastening screw 6, fastening screw set nut 7, stretching screw 8 and stretching screw set nut 9; Limiting bracket is made up of base plate 1, three square steel 2, top board 3 and wallboards 4; Base plate 1 is a rectangular slab, periphery at base plate 1 has screw hole, by screw base plate 1 is fixed on the testing table, the both sides of exciting head 10, the length direction of base plate 1 and the parallel axes of being tested blade, identical three square steel 2 of length are arranged in parallel into a row along the length direction of base plate 1, the upper surface of the lower end of three square steel 2 and base plate 1 is welded as integral body, the lower surface of the upper end of three square steel 2 and top board 3 is welded as integral body, wallboard 4 is rectangular slabs, the medial surface of the outside surface of wallboard 4 and three square steel 2 is fitted and is welded as integral body, rectangular area between two square steel on the wallboard 4, have from top to bottom and to form a line, 6 through holes that spacing equates, start at from above, first, the 3rd, the the 4th and the 6th hole is a unthreaded hole, the second and the 4th hole is a threaded hole, and two row through holes in two rectangular areas form 6 holes of working, all maintenance levels of center line in the hole of whenever working; Limiting plate 5 is rectangular slabs, the outside surface of limiting plate 5 is relative with the inside surface of wallboard 4, two row are arranged on limiting plate 5,6 row blind holes, above-mentioned two row, two row on the position of 6 row blind holes and the wallboard 4, the 6 hole correspondences that work, start at from above, in limiting plate 5 every row blind holes first, the 3rd, the the 4th and the 6th hole is a tapped blind hole, the second and the 4th hole is the light blind hole, have 8 stretching screws 8, each stretching screw 8 is screwed in the tapped blind hole corresponding on the limiting plate 5 after passing a unthreaded hole of wallboard 4, and stretching screw set nut 9 is locked at stretching screw 8 on the outside surface of wallboard 4; Have 4 fastening screws 6, each fastening screw 6 is screwed into a threaded hole of wallboard 4, and the termination of fastening screw 6 enters in the light blind hole corresponding on the limiting plate 5, and fastening screw set nut 7 is locked at fastening screw 6 on the outside surface of wallboard 4.
Principle of work of the present utility model is: after being installed on testing table by the blade of test specimen and pulling on centrifugal force (blade installing on the testing table center line fixed), unclamp stretching screw set nuts 9 all on the spacing walls of the left and right sides and fastening screw set nut 7.The turn fastening screw 6 symmetrically, and the gap between limiting plate 5 and the exciting head 10 is roughly transferred to required required value, half tight (starting at from above) the 3rd, the 4th row's screw rod set nut 9.Whether measure limiting plate 5 vertical and be parallel to the blade center line.As limiting plate 5 out of plumb, then regulate two horizontal fastening screws 6 as required simultaneously; Not parallel as limiting plate 5 and blade center line, then regulate two fastening screws 6 longitudinally as required simultaneously.After being adjusted to limiting plate 5 vertical and being parallel to the blade center line, whether the gap of measuring between limiting plate 5 and the exciting head 10 reaches requirement, as does not reach requirement, need finely tune above-mentioned four stretching screw set nuts 9 and four fastening screws 6 equably.After limiting plate 5 is adjusted to required state, tighten all stretching screw set nuts 9 and fastening screw set nut 7.
An embodiment of the present utility model in use, the gap between the left and right sides of exciting head 10 and the limiting plate 5 is adjusted to 0.2mm～0.5mm.
Claims (1)
1. the exciting head stop means that is used for the helicopter blade torture test, it is characterized in that, stop means is made up of two structure spacing walls identical and symmetrical, that be parallel to each other, and each spacing walls is made up of limiting bracket, limiting plate [5], fastening screw [6], fastening screw set nut [7], stretching screw [8] and stretching screw set nut [9]; Limiting bracket is made up of base plate [1], three square steel [2], top board [3] and wallboard [4]; Base plate [1] is a rectangular slab, periphery at base plate [1] has screw hole, by screw base plate [1] is fixed on the testing table, the both sides of exciting head [10], the length direction of base plate [1] and the parallel axes of being tested blade, identical three square steel [2] of length are arranged in parallel into a row along the length direction of base plate [1], the upper surface of the lower end of three square steel [2] and base plate [1] is welded as integral body, the lower surface of the upper end of three square steel [2] and top board [3] is welded as integral body, wallboard [4] is a rectangular slab, the medial surface of the outside surface of wallboard [4] and three square steel [2] is fitted and is welded as integral body, rectangular area between last two square steel of wallboard [4], have from top to bottom and to form a line, 6 through holes that spacing equates, start at from above, first, the 3rd, the the 4th and the 6th hole is a unthreaded hole, the second and the 4th hole is a threaded hole, and two row through holes in two rectangular areas form 6 holes of working, all maintenance levels of center line in the hole of whenever working; Limiting plate [5] is a rectangular slab, the outside surface of limiting plate [5] is relative with the inside surface of wallboard [4], on limiting plate [5], two row are arranged, 6 row blind holes, above-mentioned two row, two row on the position of 6 row blind holes and the wallboard [4], the 6 hole correspondences that work, start at from above, in the every row blind hole of limiting plate [5] first, the 3rd, the the 4th and the 6th hole is a tapped blind hole, the second and the 4th hole is the light blind hole, have 8 stretching screws [8], each stretching screw [8] passes and is screwed into limiting plate [5] behind the unthreaded hole of wallboard [4] and goes up in the corresponding tapped blind hole, and stretching screw set nut [9] is locked at stretching screw [8] on the outside surface of wallboard [4]; Have 4 fastening screws [6], each fastening screw [6] is screwed into a threaded hole of wallboard [4], the termination of fastening screw [6] enters limiting plate [5] and goes up in the corresponding light blind hole, and fastening screw set nut [7] is locked at fastening screw [6] on the outside surface of wallboard [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020701291 CN201974279U (en) | 2010-12-31 | 2010-12-31 | Excitation head limiting device for fatigue test of helicopter blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020701291 CN201974279U (en) | 2010-12-31 | 2010-12-31 | Excitation head limiting device for fatigue test of helicopter blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201974279U true CN201974279U (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020701291 Expired - Lifetime CN201974279U (en) | 2010-12-31 | 2010-12-31 | Excitation head limiting device for fatigue test of helicopter blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201974279U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699687A (en) * | 2012-06-05 | 2012-10-03 | 汉川机床集团有限公司 | Unloading cross beam for large-span gantry machine tool |
| CN104697754A (en) * | 2013-12-04 | 2015-06-10 | 中国直升机设计研究所 | Blade root section fatigue test device |
| CN107192521A (en) * | 2016-03-15 | 2017-09-22 | 北京强度环境研究所 | Cryogenic media exciting force loads protection device |
| CN112179787A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Torsion test device for main paddle central part and support arm limited lock |
-
2010
- 2010-12-31 CN CN 201020701291 patent/CN201974279U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699687A (en) * | 2012-06-05 | 2012-10-03 | 汉川机床集团有限公司 | Unloading cross beam for large-span gantry machine tool |
| CN102699687B (en) * | 2012-06-05 | 2015-05-13 | 汉川机床集团有限公司 | Unloading cross beam for large-span gantry machine tool |
| CN104697754A (en) * | 2013-12-04 | 2015-06-10 | 中国直升机设计研究所 | Blade root section fatigue test device |
| CN104697754B (en) * | 2013-12-04 | 2017-08-29 | 中国直升机设计研究所 | A kind of propeller shank section fatigue experimental device |
| CN107192521A (en) * | 2016-03-15 | 2017-09-22 | 北京强度环境研究所 | Cryogenic media exciting force loads protection device |
| CN107192521B (en) * | 2016-03-15 | 2023-10-03 | 北京强度环境研究所 | Low-temperature medium exciting force loading protection device |
| CN112179787A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Torsion test device for main paddle central part and support arm limited lock |
| CN112179787B (en) * | 2020-09-25 | 2022-09-30 | 中国直升机设计研究所 | Torsion test device for main paddle central part and support arm limited lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110914 |
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| CX01 | Expiry of patent term |