CN208026542U - A kind of pressurized strut limiting and protecting device - Google Patents
A kind of pressurized strut limiting and protecting device Download PDFInfo
- Publication number
- CN208026542U CN208026542U CN201820184010.9U CN201820184010U CN208026542U CN 208026542 U CN208026542 U CN 208026542U CN 201820184010 U CN201820184010 U CN 201820184010U CN 208026542 U CN208026542 U CN 208026542U
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- China
- Prior art keywords
- pressurized strut
- liner
- limiting
- protecting device
- housing
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model is related to a kind of pressurized strut limiting and protecting devices; belong to Aeronautical Test Technology field; it includes liner and housing; neck bush is set to outside pressurized strut piston rod; and liner side has the limiting unit of limitation pressurized strut piston rod axis movement; the liner other side is adjustable to be arranged with housing along the axis direction, and housing is fixedly installed in pressurized strut cavity.The pressurized strut limiting and protecting device of the utility model mechanically realizes the load protection of testpieces, and reliability is high, height-adjustable, versatile and convenient for disassembly and assembly, easy to operate.
Description
Technical field
The utility model belongs to Aeronautical Test Technology technical field more particularly to a kind of pressurized strut limiting and protecting device.
Background technology
During aircraft development, need to carry out large number of ground fatigue test, to provide the maintenance cycle of aircaft configuration
And fatigue life.Fatigue test generally takes longer, short then one or two month, then 1 year long, during the test, applies load
Pressurized strut is since long-term work, operating accuracy will certainly reduce, if since the reduction of pressurized strut precision causes to be applied to aircraft
The load of structure crosses the damage that conference causes aircaft configuration, therefore the protection of transfiniting of load during the test is particularly important.
Current most common method is to realize load protection by control software, and software protection is easy to operate, but liquid
Pressure actuator has certain hesitation, and when encountering the special accidents such as power failure, computer poisoning, this mode just becomes
It obtains helpless.
Utility model content
The purpose of this utility model is to provide a kind of pressurized strut limiting and protecting device, and pressurized strut is limited by mechanical structure
Displacement come realize load protect, prevent various emergency situations from causing to damage to testpieces, with improve pressurized strut reliability, repair
Property and operability.
In order to achieve the above objectives, the technical solution adopted in the utility model is：A kind of pressurized strut limiting and protecting device, packet
Liner and housing are included, neck bush is set to outside pressurized strut piston rod, and liner side has limitation pressurized strut piston rod axis movement
Limiting unit, the liner other side is adjustable to be arranged along the axis direction with housing, and housing is fixedly installed in pressurized strut cavity.
In the utility model preferred embodiment, the liner is made of for identical interior half two structures, wherein in described
Half barrel is equipped at least two protrusions and the gap with the male cooperation, and half is realize combination by protrusion and gap in two
One liner.
In the utility model preferred embodiment, the line of the line and two gap of two protrusions intersects.
In the utility model preferred embodiment, liner inner surface is smooth and outer surface is equipped with screw thread.
In the utility model preferred embodiment, the housing is made of for identical outer half two structures, outside two half it is opposed
There is identical endoporus with the liner outer diameter afterwards, and outer half endoporus is equipped with liner outer surface thread to cooperation
Internal thread, to realize the relative adjustment of liner and housing.
In the utility model preferred embodiment, half side is rotatablely connected by hinge outside two, and the other side can by lock
Dismantling connection.
The pressurized strut limiting and protecting device of the utility model mechanically realizes the load protection of testpieces, reliability
Height, it is height-adjustable, versatile and convenient for disassembly and assembly, it is easy to operate.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets the utility model
Embodiment, and for explaining the principles of the present invention together with specification.
Fig. 1 is the pressurized strut limiting and protecting device figure of the utility model.
Fig. 2 a are half schematic diagram in one in the utility model.
Fig. 2 b are half schematic diagram in another in the utility model.
Fig. 3 is half combination diagram in two in the utility model.
Fig. 4 a are housing side schematic diagram in the utility model.
Fig. 4 b are housing other side schematic diagram in the utility model.
Specific implementation mode
To keep the purpose, technical scheme and advantage that the utility model is implemented clearer, below in conjunction with the utility model
Attached drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the utility model.
As shown in Figure 1, pressurized strut limiting and protecting device is mainly made of liner 1 and 2 two parts of housing.
Liner 1 is sleeved on the outside of pressurized strut piston rod 3, has a limiting unit 11, pressurized strut piston rod 3 in the left side of liner 1
It can opposite sliding with liner 1.The outer surface of liner 1 is cylinder, is arranged in the endoporus of housing 2, liner 1 and housing 2
Be adjustable fixed structure in 3 axis method of pressurized strut piston rod, housing 2 on pressurized strut cavity 4.
Liner 1 by two it is identical in half 12 constitute, it is each in have at least two gap 122 and two on half 12
Protrusion 121, as shown in figures 2 a and 2b.Half 12 is mutually located and is fitted together by gap 122 and protrusion 121 in two,
Liner 1 in as shown in Figure 3 two after half 12 split.In order to improve half 12 in two binding force, it is each in half 12,
The line of two gap 122 and the line of two protrusions 121 intersect.
The outer surface of liner 1 be thread surface, as external screw thread YL, external screw thread YL in two half 12 seam crossing it is smooth
Transition.In order to facilitate the relative position of adjusting liner 1 and housing 2, limiting unit 11 is hexagonal (hexagon)nut in liner 1, and hexagonal nuts is to tear open
Spanner buckle provides facility during dress, such as Fig. 3 institutes.
Housing 2 is also formed by half 21 outside identical two, and half 21 side is linked together by hinge 22 outside two, is made
Obtaining two can open for half 21 outside along the shaft of hinge 22, conveniently be put into liner 1.Half 21 other side passes through lock 23 outside two
It links together, lock 23 is mechanical lock buckle, can easily be opened.The inner wall of housing 2 is thread surface, as internal thread
NL, internal thread NL smoothly transit in seam crossing, as shown in figures 4 a and 4b.
The pressurized strut limiting and protecting device working condition of the utility model is as shown in Figure 1, first open the front lock of housing 1
23, it is inserted in pressurized strut piston rod 3, is then shut off lock 23；Liner 1 is opened again, is inserted in pressurized strut piston rod 3, so
It is re-assemblied again afterwards together；Finally liner 1 and housing 2 are connected through a screw thread, by rotating the adjustment limit of liner 1
The height of position protective device, keeps its height consistent with piston rod retracted position when maximum fatigue load, so will pass through limitation and makees
The mode of dynamic cylinder piston bar displacement realizes the load protection to testpieces；After the test, according to opposite with installation process
Mode removes limiting device.
The pressurized strut limiting and protecting device of the utility model mechanically realizes the load protection of testpieces, reliability
Height, it is height-adjustable, versatile and convenient for disassembly and assembly, it is easy to operate.
The above, the only optimal specific implementation mode of the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with
Subject to the scope of the claims.
Claims (6)
1. a kind of pressurized strut limiting and protecting device, which is characterized in that pressurized strut limiting and protecting device includes liner (1) and housing
(2), liner (1) is sheathed on pressurized strut piston rod (3) outside, and there is limitation pressurized strut piston rod (3) axis to move for liner (1) side
Dynamic limiting unit (11), liner (1) other side is adjustable to be arranged with housing (2) along the axis direction, the fixed peace of housing (2)
Loaded on pressurized strut cavity (4).
2. pressurized strut limiting and protecting device according to claim 1, which is characterized in that the liner (1) is by two structures
Half (12) are constituted in identical, wherein half (12) wall is equipped at least two raised (121) and matches with the protrusion in described
The gap (122) of conjunction, half (12) realize combination into a liner (1) by raised (121) and gap (122) in two.
3. pressurized strut limiting and protecting device according to claim 2, which is characterized in that the line and two of two raised (121)
The line of gap (122) intersects.
4. pressurized strut limiting and protecting device according to any one of claims 1 to 3, which is characterized in that liner (1) inner surface light
Sliding and outer surface is equipped with screw thread.
5. pressurized strut limiting and protecting device according to claim 4, which is characterized in that the housing (2) is by two structure phases
With outer half (21) constitute, half (21) are and described to postponing the identical endoporus having with the liner (1) outer diameter outside two
Outer half (21) endoporus is equipped with liner (1) outer surface thread to the internal thread of cooperation, to realize liner (1) and housing (2)
Relative adjustment.
6. pressurized strut limiting and protecting device according to claim 5, which is characterized in that half (21) side passes through conjunction outside two
Page (22) rotation connection, the other side is detachably connected by lock (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820184010.9U CN208026542U (en) | 2018-02-02 | 2018-02-02 | A kind of pressurized strut limiting and protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820184010.9U CN208026542U (en) | 2018-02-02 | 2018-02-02 | A kind of pressurized strut limiting and protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208026542U true CN208026542U (en) | 2018-10-30 |
Family
ID=63903631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820184010.9U Active CN208026542U (en) | 2018-02-02 | 2018-02-02 | A kind of pressurized strut limiting and protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208026542U (en) |
-
2018
- 2018-02-02 CN CN201820184010.9U patent/CN208026542U/en active Active
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