CN114506473A - Pretightening force loading device - Google Patents
Pretightening force loading device Download PDFInfo
- Publication number
- CN114506473A CN114506473A CN202210186360.XA CN202210186360A CN114506473A CN 114506473 A CN114506473 A CN 114506473A CN 202210186360 A CN202210186360 A CN 202210186360A CN 114506473 A CN114506473 A CN 114506473A
- Authority
- CN
- China
- Prior art keywords
- adjusting
- force
- assembly
- piece
- test piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application provides a pretightning force loading attachment for applying the pretightning force to the testpiece, the testpiece has the effect face that is used for applying the pretightning force, loading attachment includes: the base is provided with a bearing surface, and the bearing surface is used for mounting the test piece; the elastic part is provided with a first end and a second end, and the first end is connected to the action surface through a fixing component; the force adjusting assembly is connected with the second end and used for adjusting the pre-tightening force applied to the test piece by the elastic piece; the angle adjusting assembly is connected with the elastic piece and used for adjusting an included angle between the first end and the action surface; the appearance of test piece need not to be considered to this device, can change the position of exerting the effect point of pretightning force at the test piece wantonly through fixed subassembly, can change the size and the direction of pretightning force through accent power subassembly and angle adjusting part, through mechanical connection between each subassembly, and it is convenient to connect, and the commonality is stronger.
Description
Technical Field
The application relates to the technical field of modal tests, in particular to a pre-tightening force loading device.
Background
In the actual flight process of the aircraft, aerodynamic loads are borne by wings, control surfaces and the like, so that the rigidity of the connection part of the wings or the control surfaces is changed, loads and deformation caused by aerodynamic force and internal motion exist in other parts, and in order to ensure effective simulation of ground mechanics tests of the aircraft, particularly accurate and reliable modal parameters are obtained in modal tests, the load technical state (including loads, deformation and the like) of the aircraft structure is simulated as truly as possible. Therefore, in general, a set of pre-tightening force loading device is required to apply acting force to the test piece in ground mechanics tests (especially modal tests) so as to meet the requirements of preset load and displacement conditions of different parts of the test piece, realize connection pre-tightening among structures and eliminate gaps. Due to the fact that the sizes, positions, pre-tightening force sizes, load loading angles and structure surface bearing and connecting requirements of different aircrafts and different hierarchical structures are different, the pre-tightening force loading device is difficult to accurately design and generalize.
The pretightening force loading device is nonstandard equipment because requirements such as appearance, load size and direction of a test piece are different greatly, the conventional pretightening force loading device can only apply a pretightening force with a fixed size in a single direction to a specific test piece, cannot meet modal test requirements of different levels and different structures, cannot borrow or adjust different test pieces, and is poor in universality.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, the present application is directed to a preload force application apparatus for applying a preload force to a test piece having an application surface for applying the preload force, the preload force application apparatus comprising:
the base is provided with a bearing surface, and the bearing surface is used for mounting the test piece;
the elastic part is provided with a first end and a second end, and the first end is connected to the action surface through a fixing component;
the force adjusting assembly is connected with the second end and used for adjusting the pre-tightening force applied to the test piece by the elastic piece;
the angle adjusting assembly is connected with the elastic piece and used for adjusting an included angle between the first end and the action surface.
According to the technical scheme provided by the embodiment of the application, the angle adjusting assembly comprises:
the angle adjusting component comprises a bottom plate, an inclined plate arranged on the bottom plate and a pulley arranged on the inclined plate; the elastic part is connected with the force adjusting component by bypassing the pulley;
the bottom plate is arranged on the supporting component.
According to the technical scheme provided by the embodiment of the application, the supporting assembly comprises two supporting frames which are arranged in parallel to a first direction, sliding grooves are formed in the two supporting frames along a second direction relatively far away from the base, the second direction is perpendicular to the first direction, and the first direction is the direction of the shaft of the pulley; the angle adjusting component is fixed at any position in the sliding groove.
According to the technical scheme provided by the embodiment of the application, the bottom plate is installed at the top of the supporting component.
According to the technical scheme provided by the embodiment of the application, the connecting end of the inclined plate and the bottom plate of the angle adjusting component is provided with an opening.
According to the technical scheme provided by the embodiment of the application, the force adjusting assembly comprises a force measuring assembly and a force adjusting pull rod, one end of the force measuring assembly is connected with the second end, and the other end of the force measuring assembly is connected with the force adjusting pull rod and used for displaying the pulling force of the elastic piece; the force adjusting pull rod is used for adjusting the tensile force of the elastic piece.
According to the technical scheme that this application embodiment provided, the accent power pull rod includes: the two ends of the pull rod are fixed on the outer edges of the adjusting nuts; and a left screw and a right screw which are in threaded connection with the two adjusting nuts penetrate through the two adjusting nuts, the end, which is relatively far away from the adjusting nut corresponding to the right screw, of the right screw is connected with the force measuring assembly, and the end, which is relatively far away from the adjusting nut corresponding to the left screw, of the left screw is fixed.
According to the technical scheme that this application embodiment provided, fixed subassembly is the glass steel piece, glass steel piece one end with the action face is glued joint, and at least one side is equipped with the screw hole.
According to the technical scheme that this application embodiment provided, fixed subassembly is the canvas stretching strap, the canvas stretching strap include with the backer that the action face splices, and locate the backer is kept away from relatively the lantern ring of testpieces side, the lantern ring be used for with elastic component connects.
According to the technical scheme provided by the embodiment of the application, one end of the inclined plate is fixedly connected with the bottom plate, the other end of the inclined plate is provided with an adjusting piece, the adjusting piece is in threaded connection with the bottom plate, and the end part, relatively far away from the bottom plate, of the adjusting piece can abut against the inclined plate; the adjusting piece can adjust the included angle between the inclined plate and the bottom plate.
In summary, the present application provides a pre-tightening force loading device, configured to apply a pre-tightening force to a test piece, where the test piece has a force application surface for applying the pre-tightening force, the test piece is mounted on a base, the force application surface of the test piece is connected to an elastic piece, the elastic piece is connected to the test piece through a fixing assembly, the other end of the elastic piece is connected to a force adjusting assembly, and the force adjusting assembly is configured to adjust the magnitude of the pre-tightening force applied to the test piece by the elastic piece; the elastic part is connected with an angle adjusting assembly for adjusting an included angle between the elastic part and the acting surface, so that the direction of a pre-tightening force acting on the test piece is changed; the appearance of test piece need not to be considered to this device, can change the position of exerting the effect point of pretightning force at the test piece wantonly through fixed subassembly, can change the size and the direction of pretightning force through accent power subassembly and angle adjusting part, through mechanical connection between each subassembly, and it is convenient to connect, and the commonality is stronger.
Drawings
Fig. 1 is a schematic structural diagram of a preload force loading apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a recliner assembly provided in an embodiment of the present application;
fig. 3 is a schematic structural view of a preload force loading device including a supporting frame according to embodiment 2 of the present application;
fig. 4 is a schematic structural diagram of a preload force loading device not including a support frame according to embodiment 2 of the present application;
FIG. 5 is a schematic structural diagram of a force-adjusting pull rod according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a canvas pull belt provided in an embodiment of the present application.
The text labels in the figures are represented as:
1. a test piece; 11. acting surface; 2. a base; 21. a bearing surface; 3. an elastic member; 4. a fixing assembly; 41. a canvas drawstring; 411. base fabric; 412. a collar; 4121. laying cloth; 4122. sleeving cloth; 5. an angle adjustment assembly; 51. a support assembly; 511. a support frame; 5111. a gap; 512. a chute; 52. an angle adjusting component; 521. a base plate; 522. an inclined plate; 523. a pulley; 524. an opening; 53. supporting the ingot; 6. a force adjusting assembly; 61. a force measuring assembly; 62. a force-adjusting pull rod; 621. a pull rod; 622. adjusting the nut; 623. a left screw; 624. a right screw; 625. and C-shaped hooks.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
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 present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
As mentioned in the background, the present application provides a preload force application apparatus for applying a preload force to a test piece 1, the test piece 1 having an action surface 11 for applying the preload force, as shown in fig. 1, the preload force application apparatus comprising:
the base 2 is provided with a bearing surface 21, and the bearing surface 21 is used for mounting the test piece 1; optionally, the base 2 is a cuboid, the bearing surface 21 is arranged at the top of the base 2, the bottom of the base 2 is fixed on a plant foundation or the ground, and the bases 2 with different heights can be selected according to the pre-tightening force applied to the test piece 1;
the elastic part 3 is provided with a first end and a second end, and the first end is connected to the action surface 11 through a fixing component 4; preferably, the elastic member 3 is an elastic rope, and the diameter and the type of the elastic rope can be determined according to the position of an action point applied to the test piece 1 and the load magnitude which are calculated in advance;
the force adjusting assembly 6 is connected with the second end and used for adjusting the pre-tightening force applied to the test piece 1 by the elastic piece 3;
the angle adjusting assembly 5 is connected with the elastic piece 3 and used for adjusting an included angle between the first end and the action surface 11; the direction of the pretensioning force acting on the test piece 1 can be changed; therefore, the device does not need to consider the appearance of the test piece 1, the position of the action point of the pretightening force applied to the test piece 1 can be changed at will through the fixing component 4, the size and the direction of the pretightening force can be changed through the force adjusting component 6 and the angle adjusting component 5, all the components are connected through a mechanical connection, the connection is convenient, and the universality is strong.
Further, as shown in fig. 1 and 2, the angle adjustment assembly 5 includes:
the recliner assembly 52 comprises a base plate 521, a tilting plate 522 arranged on the base plate 521, and a pulley 523 arranged on the tilting plate 522; the elastic member 3 is connected with the force adjusting component 6 by bypassing the pulley 523; preferably, the bottom plate 521 and the inclined plate 522 are rectangular, the inclined plate 522 is symmetrical about the width center line of the bottom plate 521, and the inclined plate 522 is arranged to facilitate the adjustment of the pretightening force angle; a pulley bracket is arranged perpendicular to the inclined plate 522, the pulley 523 is arranged between the pulley brackets, and two ends of the shaft of the pulley 523 are arranged on the pulley bracket; the action point of the elastic piece 3 and the pulley 523 is a fulcrum, the fulcrum is above the second end, and the extension line of the first end of the elastic piece above the second end and the fulcrum is deviated to the side of the base 2, so that when a pretightening force is applied to the test piece 1, the pretightening force needs to be applied to the test piece 1 through the pulley 523 and the pulley 523, and under the premise of changing the pretightening force direction, the friction force between the elastic piece 3 and the fulcrum is reduced, and the precision of applying the pretightening force to the test piece 1 is improved;
the base plate 521 of the angle adjusting assembly 52 is provided with a plurality of mounting through holes, and bolts can pass through the mounting through holes to fix the base plate 521 on the threaded holes of the support assembly 51.
Further, the supporting assembly 51 includes two supporting frames 511 arranged in parallel to a first direction, a sliding groove 512 is provided on a side of the two supporting frames 511 relatively far away from the base 2 along a second direction, the second direction is perpendicular to the first direction, and the first direction is a direction of an axis of the pulley 523; the recliner assembly 52 is fixed at any position within the slide slot 512. Specifically, the second direction is a vertical direction, and the first direction is parallel to the direction of the length center line of the bottom plate 521; the inner wall of the sliding groove 512 is provided with threads, and the angle adjusting assembly 52 can be fixed at any position of the sliding groove 512 by passing a bolt through the mounting through hole on the bottom plate 521, so that the angle adjusting assembly is moved along the second direction, and the included angle between the part of the elastic member 3 from the fulcrum to the first end and the action surface 11 is changed, thereby changing the direction of the pre-tightening force.
Preferably, a gap 5111 is provided between the two support frames 511, the pulley 523 is provided at a position corresponding to the gap 5111, preferably, the direction of the pre-tightening force is perpendicular to the acting surface 11, but when the first end is below the fulcrum, the part of the elastic member 3 from the fulcrum to the first end may interfere with the support frames 511, so that a gap 5111 is provided between the two support frames 511, and interference with the elastic member 3 in this scenario can be avoided.
Further, the connecting end of the inclined plate 522 and the bottom plate 521 of the recliner assembly 52 is provided with an opening 524; when the recliner assembly 52 is installed on the sliding slot 512, the opening direction of the included angle between the inclined plate 522 and the bottom plate 521 faces downward, so that in a scene where the first end is lower than the fulcrum, the elastic member 3 may interfere with the bottom plate 521 and the top of the inclined plate 522, and as shown in fig. 2, openings 524 are formed on the inclined plate 522 and the bottom plate 521.
Example 2
The same parts as those in embodiment 1 will not be described again, except that: as shown in fig. 1 and 3, the bottom plate 521 is mounted on the top of the support assembly 51; specifically, the supporting assembly 51 includes a supporting ingot 53 disposed at the bottom of the supporting frame 511 and a supporting frame 511, and this embodiment includes two scenarios, that is, the bottom plate 521 is fixed at the top of the supporting frame 511, specifically, a mounting plate is connected to the bottoms of the two supporting frames 511, the supporting frame 511 is disposed at the top of the supporting ingot 53 through the mounting plate, when the height of the supporting assembly 51 is required to be high, the supporting frame 511 and the supporting ingot 53 can be used at the same time, and the recliner assembly 52 is mounted at the top of the supporting frame 511; the top of each support frame 511 is provided with a threaded hole, the angle adjusting assembly 52 is in threaded connection with the threaded hole through the bottom plate 521, the pivot is arranged at the top of the support frame 511, and the opening of the included angle between the inclined plate 522 and the bottom plate 521 faces the test piece 1; secondly, as shown in fig. 4, when the requirement on the height of the supporting component is not high, the supporting frame 511 does not need to be installed, the angle adjusting component 52 is installed at the top of the supporting ingot 53, in this scenario, the opening direction of the included angle between the inclined plate 522 and the bottom plate 521 faces towards the test piece 1, the outer edge of the connecting end of the inclined plate 522 and the bottom plate 521 aligns with the edge of the top of the supporting ingot 53, which is relatively far away from the base 2 side, and this embodiment provides another option for changing the direction of the pretensioning force.
Example 3
On the basis of the embodiment 1 or the embodiment 2, as shown in fig. 1, the force adjusting assembly 6 includes a force measuring assembly 61 and a force adjusting pull rod 62, one end of the force measuring assembly 61 is connected to the second end, and the other end of the force measuring assembly is connected to the force adjusting pull rod 62, so as to display the pulling force of the elastic member 3; the force adjusting pull rod 62 is used for adjusting the pulling force of the elastic member 3. Preferably, the force measuring assembly 61 is a force measuring meter, the force measuring meter can monitor the actual loading size of the preload loading device in real time, optionally, the force measuring meter is a spring type or an electronic force measuring meter, and the model of the force measuring meter selected in this embodiment is wiry degree WD-1K; lifting lugs are arranged at two ends of the dynamometer and are used for being connected with the elastic piece 3 and the force adjusting pull rod 62.
Further, as shown in fig. 5, the force-adjusting pull rod 62 includes: the pull rod 621 comprises two pull rods 621 arranged in parallel and two adjusting nuts 622 arranged at the end parts of the pull rods 621, wherein the two end parts of the pull rods 621 are fixed on the outer edges of the adjusting nuts 622; a left screw 623 and a right screw 624 which are in threaded connection with the two adjusting nuts 622 penetrate through the two adjusting nuts 622, the right screw 624 is connected with the force measuring assembly 61 relatively far away from the end 622 of the corresponding adjusting nut, and the left screw 623 is fixed relatively far away from the end 622 of the corresponding adjusting nut. Specifically, the end parts of the right screw 624 and the left screw 623 which are relatively far away are provided with C-shaped hooks 625, and the C-shaped hooks 625 of the right screw 624 can be hung on lifting lugs of the dynamometer which are relatively close to the right screw 624; a base 22 is fixed on the ground or a factory building foundation, a steel wire rope 626 is connected to the end part, relatively far away from the right screw 624, of the left screw 623, and one end of the steel wire rope 626 is fixedly connected to the top surface of the base 22; under a specific scene, the pretightening force applied to the test piece 1 is large, so that when the device is used, a crowbar can be utilized to penetrate between the two pull rods 621, the direction of the crowbar is perpendicular to that of the pull rods 621, the two pull rods 621 are driven to rotate by rotating the crowbar, so that the adjusting nuts 622 connected with the pull rods 621 are driven to rotate, the left screw 623 and the right screw 624 can move towards or away from each other at the same time, and the pretightening force is increased or reduced; the left screw 623 and the right screw 624 are arranged at two ends of the pull rod 621, so that the stroke of the elastic part 3 can be increased, in addition, the graded loading of the pre-tightening force applied to the test piece 1 is realized according to the selected dynamometer precision, the diameter of the elastic part 3 and the step adjustment of the left screw 623 and the right screw 624, the pre-tightening forces of different specifications such as 10kg, 10 kg-50 kg and 50 kg-100 kg can be prepared according to the load requirement, the graded loading increment can reach 1kg at the minimum, and the load precision is higher than 0.2 kg.
Example 4
On the basis of embodiment 3, further, fixed subassembly 4 is the glass steel block, glass steel block one end with action face 11 cementing, at least one side is equipped with the screw hole. Preferably, the glass fiber reinforced plastic block is a cuboid, one side surface of the glass fiber reinforced plastic block is glued to the surface of the test piece 1 through strong glue, threaded holes are formed in the top surface of the glass fiber reinforced plastic block relatively far away from the test piece 1 and the side surface of the glass fiber reinforced plastic block relatively far away from the base 2, optionally, lifting lugs or screws are fixed in the threaded holes and used for being connected with the elastic piece 3, and when the glass fiber reinforced plastic block is used, selection is carried out according to the size and the direction of pre-tightening force; the material of fixed subassembly 4 selects the glass steel, and on the one hand, the glass steel can set up the screw hole, is connected with the external component through mechanical spiro union's mode, and on the other hand, the glass steel additional mass is lighter, easily polishes the bonding.
Example 5
The same parts as those in embodiment 4 will not be described again, except that: as shown in fig. 6, the fixing component 4 is a canvas pulling belt 41, the canvas pulling belt 41 includes a base fabric 411 bonded to the active surface 11, and a collar 412 disposed on the side of the base fabric 411 relatively far from the test piece 1, and the collar 412 is used for connecting with the elastic member 3. Specifically, the collar 412 comprises a cloth liner 4121 and a cover cloth 4122, the cover cloth 4122 and the cloth liner 4121 are made of silk plain silk canvas, the base cloth 411 is made of white cotton canvas, the base cloth 411, the cover cloth 4122 and the cloth liner 4121 are sewn through multiple rows of cotton silk threads which are uniformly distributed, the whole drawstring is guaranteed to have extremely high bearing capacity, the back surface of the base cloth 411 has a large bonding area and can be bonded with the test piece 1 through glue, when the drawstring is used, the collar 412 faces the side of the support assembly 51, the additional mass of the canvas drawstring 41 is small, the mass is smaller than 10g, the canvas drawstring has a large contact area and high bearing capacity, and the canvas drawstring 41 with different specifications and sizes can be designed according to the requirement of the bearing capacity.
Example 6
On the basis of embodiment 4 or embodiment 5, further, one end of the inclined plate 522 is fixedly connected to the bottom plate 521, and the other end of the inclined plate 522 is provided with an adjusting member, the adjusting member is in threaded connection with the bottom plate 521, and an end of the adjusting member relatively far away from the bottom plate 521 can abut against the inclined plate 522; the adjusting member can adjust the included angle between the inclined plate 522 and the bottom plate 521. Optionally, the adjusting element is disposed at a central position of the end portion of the inclined plate 522 relatively far away from the bottom plate 521, the adjusting element is a screw rod and can be in threaded connection with the bottom plate 521, an inclined surface which can be attached to the inclined plate 522 is disposed at an end portion relatively close to the inclined plate 522, so that the inclined surface can be kept stable after being stressed, and the screw rod can be rotated to adjust one end, which is not in contact with the bottom plate 521, of the inclined plate 522 to be close to or far away from the bottom plate 521, so that an included angle between the inclined plate 522 and the bottom plate 521 is changed, an adjusting range of a pretightening force angle is enlarged, and applicability of the loading device is improved.
The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are no specific structures which are objectively limitless due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features mentioned above can be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other instances, which may or may not be practiced, are intended to be within the scope of the present application.
Claims (10)
1. A pretension loading device for applying a pretension to a test piece (1), the test piece (1) having an active surface (11) for applying the pretension, characterized in that the loading device comprises:
a base (2), wherein the base (2) is provided with a bearing surface (21), and the bearing surface (21) is used for installing the test piece (1);
the elastic part (3) is provided with a first end and a second end, and the first end is connected to the action surface (11) through a fixing component (4);
the force adjusting assembly (6) is connected with the second end and is used for adjusting the pre-tightening force applied to the test piece (1) by the elastic piece (3);
the angle adjusting component (5) is connected with the elastic piece (3) and used for adjusting an included angle between the first end and the action surface (11).
2. The preload loading device according to claim 1, wherein the angle adjustment assembly (5) comprises:
the angle adjusting assembly (52) comprises a bottom plate (521), a tilting plate (522) arranged on the bottom plate (521) and a pulley (523) arranged on the tilting plate (522); the elastic part (3) bypasses the pulley (523) and is connected with the force adjusting component (6);
a support assembly (51), the base plate (521) being mounted on the support assembly (51).
3. The preload loading apparatus according to claim 2, wherein: the supporting assembly (51) comprises two supporting frames (511) which are arranged in parallel to a first direction, sliding grooves (512) are formed in the two supporting frames (511) along a second direction relatively far away from the base (2), the second direction is perpendicular to the first direction, and the first direction is the direction of an axis of the pulley (523); the angle adjusting component (52) is fixed at any position in the sliding groove (512).
4. The preload loading apparatus according to claim 2, wherein: the bottom plate (521) is mounted on the top of the support assembly (51).
5. The preload loading apparatus according to claim 2, wherein: the connection end of the inclined plate (522) and the bottom plate (521) of the angle adjusting component (52) is provided with an opening (524).
6. The preload loading apparatus according to claim 1, wherein: the force adjusting assembly (6) comprises a force measuring assembly (61) and a force adjusting pull rod (62), one end of the force measuring assembly (61) is connected with the second end, and the other end of the force measuring assembly is connected with the force adjusting pull rod (62) and used for displaying the pulling force of the elastic member (3); the force adjusting pull rod (62) is used for adjusting the pulling force of the elastic piece (3).
7. The preload loading apparatus according to claim 6, wherein: the force-adjusting pull rod (62) comprises: the device comprises two pull rods (621) arranged in parallel and two adjusting nuts (622) arranged at the end parts of the pull rods (621), wherein the two end parts of the pull rods (621) are fixed on the outer edges of the adjusting nuts (622); a left screw (623) and a right screw (624) which are in threaded connection with the two adjusting nuts (622) are arranged through the two adjusting nuts (622), the end, far away from the corresponding adjusting nut (622), of the right screw (624) is connected with the force measuring assembly (61), and the end, far away from the corresponding adjusting nut (622), of the left screw (623) is fixed.
8. The preload loading apparatus according to claim 1, wherein: the fixing component (4) is a glass fiber reinforced plastic block, one end of the glass fiber reinforced plastic block is connected with the action surface (11) in a gluing mode, and at least one side face of the glass fiber reinforced plastic block is provided with a threaded hole.
9. The preload loading apparatus according to claim 1, wherein: fixed subassembly (4) are canvas stretching strap (41), canvas stretching strap (41) include with backing fabric (411) that action face (11) are glued to and locate backing fabric (411) are kept away from relatively lantern ring (412) of test piece (1) side, lantern ring (412) be used for with elasticity piece (3) are connected.
10. The preload loading apparatus according to claim 2, wherein: one end of the inclined plate (522) is fixedly connected to the bottom plate (521), the other end of the inclined plate is provided with an adjusting piece, the adjusting piece is in threaded connection with the bottom plate (521), and the end, relatively far away from the bottom plate (521), of the adjusting piece can abut against the inclined plate (522); the adjusting piece can adjust the included angle between the inclined plate (522) and the bottom plate (521).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210186360.XA CN114506473A (en) | 2022-02-28 | 2022-02-28 | Pretightening force loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210186360.XA CN114506473A (en) | 2022-02-28 | 2022-02-28 | Pretightening force loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114506473A true CN114506473A (en) | 2022-05-17 |
Family
ID=81554003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210186360.XA Pending CN114506473A (en) | 2022-02-28 | 2022-02-28 | Pretightening force loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114506473A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115649479A (en) * | 2022-12-08 | 2023-01-31 | 四川腾盾科技有限公司 | Low-cost test device and test method for flap system of unmanned aerial vehicle |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202383020U (en) * | 2011-12-22 | 2012-08-15 | 三一电气有限责任公司 | Side pull loading device for blade static test |
| CN203365156U (en) * | 2013-04-09 | 2013-12-25 | 黄楠 | Adjustable casement window warping and opening limit test force applying device |
| CN104048874A (en) * | 2014-06-24 | 2014-09-17 | 西北工业大学 | Load follow-up loading system for plane flap reliability test |
| CN104200016A (en) * | 2014-08-20 | 2014-12-10 | 中国运载火箭技术研究院 | Multi-control-surface aircraft modal calculation and verification method |
| CN105758629A (en) * | 2014-12-19 | 2016-07-13 | 成都飞机设计研究所 | Servo loading method in aircraft strength test |
| JP2016161436A (en) * | 2015-03-03 | 2016-09-05 | 三菱航空機株式会社 | Loading test method and loading device of structure |
| CN109507020A (en) * | 2017-09-20 | 2019-03-22 | 东莞前沿技术研究院 | Testpieces strength testing device and testpieces strength test method |
| CN109839307A (en) * | 2017-11-24 | 2019-06-04 | 航宇救生装备有限公司 | A kind of loading system direction-changing device based on test of static strength |
| CN210346989U (en) * | 2019-09-06 | 2020-04-17 | 常州坤维传感科技有限公司 | 90-degree force reversing mechanism |
| CN111982436A (en) * | 2020-07-24 | 2020-11-24 | 北京机电工程研究所 | Flexible preloading applying device for modal test |
| CN113503447A (en) * | 2021-07-27 | 2021-10-15 | 深圳市倍思奇创新科技有限公司 | Angle adjusting mechanism and television mounting bracket thereof |
-
2022
- 2022-02-28 CN CN202210186360.XA patent/CN114506473A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202383020U (en) * | 2011-12-22 | 2012-08-15 | 三一电气有限责任公司 | Side pull loading device for blade static test |
| CN203365156U (en) * | 2013-04-09 | 2013-12-25 | 黄楠 | Adjustable casement window warping and opening limit test force applying device |
| CN104048874A (en) * | 2014-06-24 | 2014-09-17 | 西北工业大学 | Load follow-up loading system for plane flap reliability test |
| CN104200016A (en) * | 2014-08-20 | 2014-12-10 | 中国运载火箭技术研究院 | Multi-control-surface aircraft modal calculation and verification method |
| CN105758629A (en) * | 2014-12-19 | 2016-07-13 | 成都飞机设计研究所 | Servo loading method in aircraft strength test |
| JP2016161436A (en) * | 2015-03-03 | 2016-09-05 | 三菱航空機株式会社 | Loading test method and loading device of structure |
| CN109507020A (en) * | 2017-09-20 | 2019-03-22 | 东莞前沿技术研究院 | Testpieces strength testing device and testpieces strength test method |
| CN109839307A (en) * | 2017-11-24 | 2019-06-04 | 航宇救生装备有限公司 | A kind of loading system direction-changing device based on test of static strength |
| CN210346989U (en) * | 2019-09-06 | 2020-04-17 | 常州坤维传感科技有限公司 | 90-degree force reversing mechanism |
| CN111982436A (en) * | 2020-07-24 | 2020-11-24 | 北京机电工程研究所 | Flexible preloading applying device for modal test |
| CN113503447A (en) * | 2021-07-27 | 2021-10-15 | 深圳市倍思奇创新科技有限公司 | Angle adjusting mechanism and television mounting bracket thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115649479A (en) * | 2022-12-08 | 2023-01-31 | 四川腾盾科技有限公司 | Low-cost test device and test method for flap system of unmanned aerial vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114506473A (en) | Pretightening force loading device | |
| EP2613134B1 (en) | System and method for aligning a test article with a load | |
| CN102124315B (en) | Specimen loading apparatus and method | |
| CN105043976A (en) | Test device for dynamically measuring fretting pair frictional coefficient during fretting fatigue process and test method | |
| CN104034525B (en) | Multi-function spring fatigue tester | |
| CN111272568B (en) | Device and method for measuring stretching-shearing and stretching-twisting coupling effects | |
| CN110686855B (en) | High-speed wind tunnel translational vibration dynamic derivative test device | |
| CN110395415B (en) | Universal zero-gravity unloading device | |
| KR102038460B1 (en) | Long wing structure test apparatus and method | |
| CN204988981U (en) | Vice coefficient of friction's of fine motion test device in dynamic measurement fine motion fatigue process | |
| CN111999017B (en) | Vehicle body rigidity test system and method | |
| CN217100513U (en) | Pretightening force loading device | |
| CN110793793B (en) | Ground unfolding test system of large-scale load platform | |
| DeVries et al. | LSST telescope primary/tertiary mirror hardpoints | |
| CN114988280B (en) | Satellite ground test flexible support zero-stress suspension device and suspension method | |
| CN109406083A (en) | A kind of overhanging golden tool string wind excited vibration Wearing Simulated Test platform | |
| CN112362230B (en) | Device and method for quickly calibrating mechanical tensiometer | |
| CN114001087B (en) | Universal fixing device | |
| CN106921026A (en) | A kind of orthogonal satellite antenna drive mechanism ground air supporting gravity unloading mechanism of two axles | |
| CN214776669U (en) | Solar cell array unfolding device | |
| CN111272546B (en) | Torsion-tension coupling effect measuring device and method | |
| CN111999172B (en) | Test fixture, device and method for rivet composite loading test | |
| CN210375644U (en) | Mooring ring mounting seat and mooring ring tensile test assembly | |
| RU2028591C1 (en) | Stand for member dynamic tests | |
| CN205392779U (en) | Big quality testpieces installation device on vibration centrifuge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |