CN110160897B - Safety device for flutter test - Google Patents
Safety device for flutter test Download PDFInfo
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- CN110160897B CN110160897B CN201810968542.6A CN201810968542A CN110160897B CN 110160897 B CN110160897 B CN 110160897B CN 201810968542 A CN201810968542 A CN 201810968542A CN 110160897 B CN110160897 B CN 110160897B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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Abstract
The invention provides a safety device for flutter test, comprising: the flutter test model is arranged on the base; the driving assembly is arranged on the base; the locking terminal is arranged on the flutter test model; the locking clip is rotatably arranged on the base, one end of the locking clip is connected with the driving assembly, and the other end of the locking clip is selectively connected with the locking terminal; when the vibration of the flutter test model is smaller than a set threshold value, the driving assembly drives the locking clip to rotate so as to separate the locking clip from the locking terminal; when the vibration of the flutter test model is larger than or equal to a set threshold value, the driving assembly drives the locking clip to rotate so as to limit the locking terminal. By applying the technical scheme of the invention, the technical problems that the direct-insertion type protection mechanism in the prior art is low in rigidity and cannot reliably protect the flutter test model are solved.
Description
Technical Field
The invention relates to the technical field of flutter tests, in particular to a safety device for a flutter test.
Background
In the flutter test, if the wing rudder flutter model generates flutter or a limit ring, the wing rudder flutter model generates vibration with large amplitude, and the model is likely to be damaged. In order to avoid damage to the model, safety devices need to be designed to protect the model. The traditional flutter test model protection mechanism is generally in a straight-inserting type, and the straight-inserting type protection mechanism is simple in structure and convenient to use. However, for the flutter model with a large mass, because the vibration is large, when the traditional direct-insertion type protection mechanism is used, because the rigidity of the direct-insertion type protection mechanism is small, the reliable protection of the flutter model cannot be realized.
Disclosure of Invention
The invention provides a safety device for a flutter test, which can solve the technical problems that in the prior art, a direct-insert type protection mechanism is low in rigidity and cannot reliably protect a flutter test model.
The invention provides a safety device for flutter test, comprising: the flutter test model is arranged on the base; the driving assembly is arranged on the base; the locking terminal is arranged on the flutter test model; the locking clip is rotatably arranged on the base, one end of the locking clip is connected with the driving assembly, and the other end of the locking clip is selectively connected with the locking terminal; when the vibration of the flutter test model is smaller than a set threshold value, the driving assembly drives the locking clip to rotate so as to separate the locking clip from the locking terminal; when the vibration of the flutter test model is larger than or equal to a set threshold value, the driving assembly drives the locking clip to rotate so as to limit the locking terminal.
Further, the safety device further comprises a limit stop, one end of the limit stop is connected with the base, and the other end of the limit stop is in clearance fit with the flutter test model.
Furthermore, the limit stop is provided with an adjustable connecting hole, the safety device further comprises a first fastener, the first fastener sequentially penetrates through the base and the adjustable connecting hole to realize fixed connection between the limit stop and the base, and the first fastener is fixed through different positions in the adjustable connecting hole to adjust a gap between the other end of the limit stop and the flutter test model.
Furthermore, limit stop has a plurality of adjustable connecting holes, and safety device still includes a plurality of first fasteners, and a plurality of first fasteners and a plurality of adjustable connecting holes one-to-one set up, and a plurality of adjustable connecting holes interval sets up the other end at limit stop.
Further, the driving assembly comprises an air cylinder and a piston rod, the air cylinder is fixedly arranged on the base, the piston rod is connected with one end of the locking clip, the piston rod can drive the locking clip to rotate, and when the vibration of the flutter test model is smaller than a set threshold value, the driving assembly drives one end of the locking clip to rotate around a first direction so as to separate the locking clip from the locking terminal; when the vibration of the flutter test model is larger than or equal to a set threshold value, the driving assembly drives one end of the locking clip to rotate around the second direction so as to limit the locking terminal.
Further, the locking checkpost includes linkage segment and locking section, and linkage segment and locking section are the contained angle setting, and the linkage segment rotationally sets up on the base, and the one end and the piston rod of linkage segment are connected, and the other end and the locking section of linkage segment are connected, and the locking section has the locking groove, and the locking groove is optionally cooperateed with the locking terminal and is connected.
Further, the locking section comprises an equal straight section and an expansion section which are connected, the length of the equal straight section is 1.2 to 2 times of the width of the equal straight section, and the expansion angle of the expansion section is 10-25 degrees.
Furthermore, the safety device also comprises an inserting lug, one end of the inserting lug is connected with the piston rod, and the other end of the inserting lug is connected with the connecting section of the locking clip.
Furthermore, the connecting section is provided with a long circular hole, the long circular hole is composed of a first half circular hole, a rectangular hole and a second half circular hole which are sequentially communicated, the safety device further comprises a second fastening piece, and the second fastening piece sequentially penetrates through the long circular hole of the locking clip and the inserting lug to achieve rotatable connection between the locking clip and the inserting lug.
Further, the safety device further comprises a control unit and a monitoring unit, the control unit is connected with the monitoring unit and the driving assembly respectively, the monitoring unit is used for monitoring the vibration quantity of the flutter test model, and the control unit is used for controlling the driving assembly to act according to the vibration quantity monitored by the monitoring unit.
By applying the technical scheme, the safety device for the flutter test is provided, and the device can drive the locking clip to rotate so as to separate the locking clip from the locking terminal when the vibration of a flutter test model is smaller than a set threshold value, so that the flutter test can be normally carried out; when the vibration of the flutter test model is larger than or equal to a set threshold value, the driving assembly drives the locking clamp to rotate, and the locking terminal is connected with the flutter test model, so that the flutter test model can be locked through the locking clamp, and the reliable protection of the flutter test model is realized. Compared with the prior art, the safety device provided by the invention has the advantages that the locking clip is driven by the driving device to move so as to lock or unlock the flutter test model, the rigidity is higher in such a way, and the reliability of protection on the flutter test model can be effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 illustrates a front view of a safety device for flutter testing provided in accordance with a particular embodiment of the present invention;
FIG. 2 shows a top view of the safety device provided in FIG. 1 for flutter testing;
FIG. 3 illustrates a schematic structural view of a lock clip provided in accordance with a specific embodiment of the present invention;
FIG. 4 shows a dimensional schematic view of the lock clip provided in FIG. 3;
FIG. 5 illustrates a front view of a positive stop provided in accordance with an exemplary embodiment of the present invention;
FIG. 6 shows a right side view of the positive stop provided in FIG. 5;
fig. 7 illustrates a front view of a locking terminal provided in accordance with a specific embodiment of the present invention;
fig. 8 shows a right side view of the locking terminal provided in fig. 7;
FIG. 9 illustrates a schematic diagram of a security device for flutter testing when locked, according to an embodiment of the present invention;
fig. 10 shows a schematic view of a safety device for flutter test provided according to an embodiment of the present invention when unlocked.
Wherein the figures include the following reference numerals:
10. a base; 20. a drive assembly; 21. a cylinder; 22. a piston rod; 30. a locking terminal; 40. a lock clip; 41. a connecting section; 41a, a long round hole; 42. a locking section; 421. an equal straight section; 422. an expansion section; 50. a limit stop block; 50a, an adjustable connecting hole; 60. inserting lugs; 70. a first screw; 80. a first nut; 90. a second screw; 100. a cylinder fixing nut; 110. a cylinder support; 200. flutter test model.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 to 10, according to an embodiment of the present invention, there is provided a safety device for a chatter test, the safety device including a base 10, a driving unit 20, a lock terminal 30, and a lock clip 40, a chatter test pattern being provided on the base 10, the driving unit 20 being provided on the base 10, the lock terminal 30 being provided on the chatter test pattern, the lock clip 40 being rotatably provided on the base 10, one end of the lock clip 40 being connected to the driving unit 20, and the other end of the lock clip 40 being selectively connected to the lock terminal 30; when the vibration of the chatter test model 200 is smaller than a set threshold, the driving assembly 20 drives the lock clip 40 to rotate so as to separate the lock clip 40 from the lock terminal 30; when the vibration of the chatter test model 200 is greater than or equal to the set threshold, the driving assembly 20 drives the lock clip 40 to rotate to limit the lock terminal 30.
By applying the configuration mode, the safety device for the flutter test is provided, and the device can drive the locking clip to rotate so as to separate the locking clip from the locking terminal when the vibration of the flutter test model is smaller than a set threshold value, so that the flutter test can be normally carried out; when the vibration of the flutter test model is larger than or equal to a set threshold value, the driving assembly drives the locking clamp to rotate, and the locking terminal is connected with the flutter test model, so that the flutter test model can be locked through the locking clamp, and the reliable protection of the flutter test model is realized. Compared with the prior art, the safety device provided by the invention has the advantages that the locking clip is driven by the driving device to move so as to lock or unlock the flutter test model, the rigidity is higher in such a way, and the reliability of protection on the flutter test model can be effectively improved.
In the present invention, as shown in fig. 1 and 2, in order to further improve the reliability of protection against the flutter test model, the safety device may be configured to further include a limit stopper 50, one end of the limit stopper 50 is connected to the base 10, and the other end of the limit stopper 50 is in clearance fit with the flutter test model 200. By applying the configuration mode, the limit stop is arranged on the base and is in clearance fit with the flutter test model, so that the flutter test model can be effectively prevented from being damaged when the flutter test model generates large-amplitude rotation vibration around the center.
Further, in the present invention, in order to simultaneously consider the accuracy of the test result of the flutter test model and the test safety, the limit stop 50 may be configured to have an adjustable connection hole 50a, the safety device further includes a first fastener, the first fastener sequentially passes through the base 10 and the adjustable connection hole 50a to realize the fixed connection between the limit stop 50 and the base 10, and the first fastener is fixed by different positions in the adjustable connection hole 50a to adjust the gap between the other end of the limit stop 50 and the flutter test model. As one embodiment of the present invention, a screw-nut combination may be employed as the first fastener.
Specifically, in the invention, for any flutter test model, when an initial test is carried out, the first fastener is fixedly arranged at the first position of the adjustable connecting hole, at the moment, the gap between the limit stop and the flutter test model is usually larger, the flutter test is carried out on the flutter test model 200, the test state of the flutter test model 200 is observed, after the test is finished, if the vibration of the flutter test model 200 in the whole test process is smaller and does not exceed a set vibration threshold value, at the moment, the position of the first fastener in the adjustable connecting hole 50a can be adjusted, and the gap between the limit stop and the flutter test model is increased, so that the influence of the limit stop on the flutter test model in the test process is weakened. If the vibration of the flutter test model 200 in the whole test process is large and exceeds a set vibration threshold value, the position of the first fastener in the adjustable connecting hole 50a can be adjusted, and the gap between the limit stop and the flutter test model is reduced, so that the protection effect of the limit stop on the flutter test model in the test process is improved.
Further, in the present invention, in order to further improve the reliability of the limit stop for protection against the flutter test model, the limit stop 50 may be configured to have a plurality of adjustable connection holes 50a, the safety device further includes a plurality of first fastening members, the plurality of first fastening members are disposed in one-to-one correspondence with the plurality of adjustable connection holes 50a, and the plurality of adjustable connection holes 50a are disposed at the other end of the limit stop 50 at intervals.
As an embodiment of the present invention, as shown in fig. 5 and 6, the limit stopper 50 has a "Z" shape, one end of the limit stopper 50 is connected to the base 10, the other end of the limit stopper 50 is in clearance fit with the flutter test model 200, and one end of the limit stopper 50 is provided with three oblong adjustable connection holes 50a at intervals so as to adjust a clearance between the limit stopper 50 and the flutter test model 200.
Further, in the present invention, in order to achieve reliable protection of the chatter test model, the driving assembly 20 includes a cylinder 21 and a piston rod 22, the cylinder 21 is fixedly disposed on the base 10, the piston rod 22 is connected to one end of the lock clip 40, the piston rod 22 can drive the lock clip 40 to rotate, when the vibration of the chatter test model is smaller than a set threshold, the driving assembly 20 drives one end of the lock clip 40 to rotate around a first direction to separate the lock clip 40 from the lock terminal 30, and when the vibration of the chatter test model is greater than or equal to the set threshold, the driving assembly 20 drives one end of the lock clip 40 to rotate around a second direction to limit the lock terminal 30.
As an embodiment of the present invention, as shown in fig. 9 and 10, the chatter test pattern is fixedly provided on the base 10 by screws, and the middle portion of the lock clip 40 is rotatably provided on the base 10 by a second screw 90. The cylinder 21 is fixedly arranged on the base 10 through a cylinder bracket 110, and the cylinder 21 can drive the piston rod 22 to reciprocate linearly. The piston rod 22 is connected with one end of the locking clip 40, the other end of the locking clip 40 is connected with the locking terminal 40, when the vibration of the flutter test model is smaller than a set threshold value, the cylinder 21 drives the piston rod 22 to extend out to drive the locking clip 40 to rotate around the first direction so as to separate the locking clip 40 from the locking terminal 30, and at the moment, the safety device is in an unlocking state and can perform flutter test on the flutter test model 200. When the vibration of the flutter test model is larger than or equal to the set threshold value, the air cylinder 21 drives the piston rod 22 to retract so as to drive the locking clip 40 to rotate around the second direction to tightly clamp the locking terminal 30 through the locking clip 40, and at the moment, the safety device is in a locking state, so that the flutter test model 200 can be protected from being damaged.
Further, in the present invention, in order to effectively lock the flutter test model 200, as shown in fig. 3 and 4, the lock clip 40 may be configured to include a connection section 41 and a lock section 42, the connection section 41 and the lock section 42 are disposed at an angle, the connection section 41 is rotatably disposed on the base 10, one end of the connection section 41 is connected to the piston rod 22, the other end of the connection section 41 is connected to the lock section 42, and the lock section 42 has a lock groove which is selectively connected to the lock terminal 30 in a matching manner. As an embodiment of the present invention, the connecting section 41 and the locking section 42 are arranged at a right angle.
Further, in the present invention, in order to prevent the locking terminal 30 from slipping out of the locking groove of the locking clip during the test, as shown in fig. 4, the locking section 42 may be configured to include a connected equal straight section 421 and an expanding section 422, the length L of the equal straight section 421 is 1.2 to 2 times the width W of the equal straight section 421, and the expanding angle α of the expanding section 422 is 10 ° to 25 °.
Further, in the present invention, in order to conveniently implement the connection of the lock clip with the piston rod, the safety device may be configured to further include an insert ear 60, one end of the insert ear 60 is connected with the piston rod 22, and the other end of the insert ear 60 is connected with the connection section 41 of the lock clip 40.
In addition, in the present invention, in order to make the movement of the lock clip 40 smoother, the connecting section 41 has an elongated circular hole 41a, the elongated circular hole 41a is composed of a first semicircular hole, a rectangular hole and a second semicircular hole which are sequentially communicated, and the safety device further includes a second fastening member which sequentially passes through the elongated circular hole 41a of the lock clip 40 and the insertion lug 60 to realize the rotatable connection between the lock clip 40 and the insertion lug 60.
As an embodiment of the present invention, as shown in fig. 1, the second fastening member includes a first screw 70 and a first nut 80, one end of the insert lug 60 is screwed with the piston rod 22, and the other end of the insert lug 60 passes through the oblong hole 41a of the lock catch 40 and the insert lug 60 in sequence by the first screw 70 and is screwed with the first nut 80 to achieve the connection with the lock catch 40.
Further, in the present invention, in order to improve the working efficiency and increase the reliability of the protection force on the flutter test model, the safety device may be configured to further include a control unit and a monitoring unit, the control unit is respectively connected to the monitoring unit and the driving component 20, the monitoring unit is configured to monitor the vibration amount of the flutter test model 200, and the control unit is configured to control the driving component 20 to operate according to the vibration amount monitored by the monitoring unit.
As a specific embodiment of the present invention, the monitoring unit monitors the vibration amount of the flutter test model 200 in real time and feeds back the monitored vibration amount of the flutter test model 200 to the control unit, a set vibration threshold is preset in the control unit, the control unit compares the received vibration amount of the flutter test model 200 with the set vibration threshold in real time, when the received vibration amount of the flutter test model 200 is smaller than the set vibration threshold, the control unit controls the cylinder 21 to operate to drive the piston rod 22 to extend, the piston rod 22 drives the locking clip 40 to rotate around the first direction to separate the locking clip 40 from the locking terminal 30, and the safety device is in an unlocked state to perform the flutter test on the flutter test model 200. When the received vibration quantity of the flutter test model 200 is greater than or equal to the set vibration threshold value, the control unit controls the cylinder 21 to act to drive the piston rod 22 to retract, the cylinder 21 drives the locking clip 40 to rotate around the second direction to limit the locking terminal 30, and the safety device is in a locking state at the moment and can protect the flutter test model 200 from being damaged.
For a further understanding of the present invention, the safety device for flutter test of the present invention will be described in detail with reference to fig. 1 to 9.
As shown in fig. 1 to 9, according to an embodiment of the present invention, there is provided a safety device for a chatter test, the device including a base 10, a driving assembly 20, a locking terminal 30, a locking clip 40, a limit stop 50, an insert lug 60, a control unit, and a monitoring unit, wherein the locking screw is used as the locking terminal 30, the driving assembly 20 includes a cylinder 21 and a piston rod 22, the chatter test model is fixedly disposed on the base 10 by a screw, and a middle portion of the locking clip 40 is rotatably disposed on the base 10 by a second screw 90.
The cylinder 21 is fixedly arranged on the base 10 through a cylinder bracket 110 and a cylinder fixing nut 100, and the cylinder 21 can drive the piston rod 22 to make reciprocating linear motion. One end of the insert lug 60 is in threaded connection with the piston rod 22, the other end of the insert lug 60 passes through the oblong hole 41a of the lock clip 40 and the insert lug 60 in sequence through the first screw 70 and is screwed with the first nut 80 to realize connection with one end of the lock clip 40, and the other end of the lock clip 40 is selectively connected with the lock terminal 40. The limit stop 50 is of a Z-shaped structure, one end of the limit stop 50 is connected with the base 10, and the other end of the limit stop 50 is in clearance fit with the flutter test model 200. The control unit is respectively connected with the monitoring unit and the driving component 20, the monitoring unit is used for monitoring the vibration quantity of the flutter test model 200, and the control unit is used for controlling the driving component 20 to act according to the vibration quantity monitored by the monitoring unit.
The monitoring unit monitors the vibration quantity of the flutter test model 200 in real time and feeds the monitored vibration quantity of the flutter test model 200 back to the control unit, a set vibration threshold value is preset in the control unit, the control unit compares the received vibration quantity of the flutter test model 200 with the set vibration threshold value in real time, when the received vibration quantity of the flutter test model 200 is smaller than the set vibration threshold value, the control unit controls the air cylinder 21 to act to drive the piston rod 22 to stretch out, the piston rod 22 drives the locking clip 40 to rotate clockwise to separate the locking clip 40 from the locking terminal 30, the safety device is in an unlocking state at the moment, and the flutter test can be carried out on the flutter test model 200. When the received vibration quantity of the flutter test model 200 is greater than or equal to the set vibration threshold value, the control unit controls the cylinder 21 to act to drive the piston rod 22 to retract, the cylinder 21 drives the locking clip 40 to rotate around the counterclockwise direction to limit the locking terminal 30, and the safety device is in a locking state at the moment and can protect the flutter test model 200 from being damaged.
In summary, the present invention provides a safety device for flutter test, which is used for protecting the model during the flutter test. During normal test, the piston rod of the air cylinder extends out to push the locking clip to be disengaged from the locking screw. When the model flutters, the piston rod of the air cylinder retracts to drive the locking clip to be clamped on the locking screw, so that the model flutters and exits, and the purpose of protecting the model is achieved. During flutter test, when the model generates large-amplitude sudden vibration, the limit stop restrains the vibration of the model, and the vibration amplitude of the model is further increased. Therefore, compared with the prior art, the safety device provided by the invention can effectively protect the safety of the flutter test model and has wide application prospect in the flutter test.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A safety device for flutter testing, the safety device comprising:
the flutter test device comprises a base (10), wherein a flutter test model is arranged on the base (10);
a drive assembly (20), the drive assembly (20) being disposed on the base (10);
the locking terminal (30), the said locking terminal (30) is set up on the fluttering test model;
the locking clip (40), the locking clip (40) is rotatably arranged on the base (10), one end of the locking clip (40) is connected with the driving assembly (20), and the other end of the locking clip (40) is selectively connected with the locking terminal (30);
when the vibration of the flutter test model is smaller than a set threshold value, the driving assembly (20) drives the locking clip (40) to rotate so as to separate the locking clip (40) from the locking terminal (30); when the vibration of the flutter test model is larger than or equal to a set threshold value, the driving component (20) drives the locking clip (40) to rotate so as to limit the locking terminal (30);
the driving assembly (20) comprises an air cylinder (21) and a piston rod (22), the air cylinder (21) is fixedly arranged on the base (10), the piston rod (22) is connected with one end of the locking clip (40), the piston rod (22) can drive the locking clip (40) to rotate, and when the vibration of the flutter test model is smaller than a set threshold value, the driving assembly (20) drives one end of the locking clip (40) to rotate around a first direction so as to separate the locking clip (40) from the locking terminal (30); when the vibration of the flutter test model is larger than or equal to a set threshold value, the driving assembly (20) drives one end of the locking clip (40) to rotate around the second direction so as to limit the locking terminal (30).
2. The safety device for flutter test according to claim 1, further comprising a limit stop (50), wherein one end of the limit stop (50) is connected with the base (10), and the other end of the limit stop (50) is in clearance fit with the flutter test model.
3. The safety device for flutter test according to claim 2, wherein the limit stop (50) has an adjustable connection hole (50a), the safety device further comprising a first fastener which passes through the base (10) and the adjustable connection hole (50a) in sequence to achieve a fixed connection between the limit stop (50) and the base (10), the first fastener being fixed by different positions within the adjustable connection hole (50a) to adjust a gap between the other end of the limit stop (50) and the flutter test model.
4. The safety device for flutter test according to claim 3, wherein the limit stopper (50) has a plurality of the adjustable connection holes (50a), the safety device further comprises a plurality of the first fastening members, the plurality of the first fastening members are disposed in one-to-one correspondence with the plurality of adjustable connection holes (50a), and the plurality of adjustable connection holes (50a) are disposed at the other end of the limit stopper (50) at intervals.
5. The safety device for flutter test according to claim 1, wherein the locking clip (40) comprises a connecting section (41) and a locking section (42), the connecting section (41) and the locking section (42) are arranged at an included angle, the connecting section (41) is rotatably arranged on the base (10), one end of the connecting section (41) is connected with the piston rod (22), the other end of the connecting section (41) is connected with the locking section (42), the locking section (42) is provided with a locking groove, and the locking groove is selectively matched and connected with the locking terminal (30).
6. The safety device for flutter test according to claim 5, wherein the locking section (42) comprises a connected equal straight section (421) and an expanding section (422), the length of the equal straight section (421) is 1.2 to 2 times the width of the equal straight section (421), and the expanding angle of the expanding section (422) is 10 ° to 25 °.
7. The safety device for flutter test according to claim 5, further comprising an insert lug (60), wherein one end of the insert lug (60) is connected with the piston rod (22), and the other end of the insert lug (60) is connected with the connecting section (41) of the lock clip (40).
8. The safety device for flutter test according to claim 7, wherein the connecting section (41) has an oblong hole (41a), the oblong hole (41a) is composed of a first semicircular hole, a rectangular hole and a second semicircular hole which are communicated in sequence, and the safety device further comprises a second fastening member which passes through the oblong hole (41a) of the lock clip (40) and the insertion lug (60) in sequence to realize rotatable connection between the lock clip (40) and the insertion lug (60).
9. The safety device for flutter test according to claim 1, further comprising a control unit and a monitoring unit, wherein the control unit is respectively connected with the monitoring unit and the driving component (20), the monitoring unit is used for monitoring the vibration quantity of the flutter test model, and the control unit is used for controlling the driving component (20) to act according to the vibration quantity monitored by the monitoring unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810968542.6A CN110160897B (en) | 2018-08-23 | 2018-08-23 | Safety device for flutter test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810968542.6A CN110160897B (en) | 2018-08-23 | 2018-08-23 | Safety device for flutter test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110160897A CN110160897A (en) | 2019-08-23 |
| CN110160897B true CN110160897B (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810968542.6A Active CN110160897B (en) | 2018-08-23 | 2018-08-23 | Safety device for flutter test |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102121869A (en) * | 2010-12-03 | 2011-07-13 | 苏州世力源科技有限公司 | Pneumatic shock response spectrum tester |
| CN102928190A (en) * | 2012-09-18 | 2013-02-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Limiting locking device |
| CN104931366A (en) * | 2015-06-08 | 2015-09-23 | 天津大学 | Fretting fatigue testing method allowing contact load to be adjusted in real time and testing machine adopting fretting fatigue testing method |
| CN105313687A (en) * | 2014-07-23 | 2016-02-10 | 上海蓝恩控制系统有限公司 | Push-pull cable sleeve end piece locking and connecting device |
| CN106516093A (en) * | 2016-11-30 | 2017-03-22 | 中国直升机设计研究所 | Locking limit protection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4310043B2 (en) * | 2000-12-05 | 2009-08-05 | 本田技研工業株式会社 | Flutter test model |
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| CN102121869A (en) * | 2010-12-03 | 2011-07-13 | 苏州世力源科技有限公司 | Pneumatic shock response spectrum tester |
| CN102928190A (en) * | 2012-09-18 | 2013-02-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Limiting locking device |
| CN105313687A (en) * | 2014-07-23 | 2016-02-10 | 上海蓝恩控制系统有限公司 | Push-pull cable sleeve end piece locking and connecting device |
| CN104931366A (en) * | 2015-06-08 | 2015-09-23 | 天津大学 | Fretting fatigue testing method allowing contact load to be adjusted in real time and testing machine adopting fretting fatigue testing method |
| CN106516093A (en) * | 2016-11-30 | 2017-03-22 | 中国直升机设计研究所 | Locking limit protection device |
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| 超声速全动翼面热颤振特性分析;李增文 等;《战术导弹技术》;20081215(第5期);第36-39页 * |
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| CN110160897A (en) | 2019-08-23 |
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