CN210802750U - Little Newton's thrust test platform device of wire drawing restraint - Google Patents
Little Newton's thrust test platform device of wire drawing restraint Download PDFInfo
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- CN210802750U CN210802750U CN201920887343.2U CN201920887343U CN210802750U CN 210802750 U CN210802750 U CN 210802750U CN 201920887343 U CN201920887343 U CN 201920887343U CN 210802750 U CN210802750 U CN 210802750U
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Abstract
The utility model relates to a weak force measurement technical field, concretely relates to little ox thrust test platform device that ends of a bull of wire drawing restraint. The test bench device comprises: the device comprises a mounting frame, a table body, a micro propeller to be tested, a wire drawing restraint assembly and a micrometer. The utility model discloses a little Newton's thrust test platform device of wire drawing restraint carries out the degree of freedom restraint to the stage body through at least one wire drawing restraint subassembly, wire drawing restraint subassembly includes a application of force regulating part and three piece at least first wire drawing, the application of force regulating part provides tension for first wire drawing, and the application of force regulating part maintains the tension of the elastic construction of wire drawing restraint subassembly through the regulation of the application of force size of self and the slight rotation of stage body and is approximate unchangeable, it is flexible degree of freedom to realize the stage body along its axial translation, all the other four degrees of freedom of stage body are retrained by the tension of wire drawing, the gravity and the ground vibration of stage body and little propeller have been reduced the influence of thrust test.
Description
Technical Field
The utility model relates to a weak force measurement technical field, concretely relates to little ox thrust test platform device that ends of a bull of wire drawing restraint.
Background
The micro-thruster with the resolution ratio of micro Newton magnitude and higher precision has important application in high-precision space experiments. In space tasks such as high-precision deep space exploration, space satellite formation flight and the like, the precision requirements on attitude control and orbit control of a satellite are higher and higher, a controlled actuator is a high-precision space micro-thruster which is an extremely important component of the space tasks, and the performance of the controlled actuator also determines the execution quality of the space tasks and even the success or failure of the space tasks. In addition, in the projects such as the space gravitational wave exploration plan, the satellite gravitational field measurement, the space equivalence principle inspection, and the space microgravity vibration isolation, it is also necessary to perform so-called drag-free control by compensating non-gravitational disturbance on the satellite or the local load in real time by using a micro-thruster.
The ground performance evaluation test and the precision calibration are the necessary way for the development of the micro-thruster and are one of the preconditions for the space application of the micro-thruster.
Ground testing of high precision micro-thrusters for space tasks is a difficult task. The main reasons are that: ground surface gravity acceleration g which cannot be avoided in ground surface test0For a micro-thruster (usually with a mass in the order of kilograms), the gravitational force experienced is the unavoidable background force in ground tests, while the weak thrust to be tested is only 10 times its gravitational force6～108And one-fourth. In addition, the ground vibration noise (sesimic noise) of the ground of a common laboratory can reach 10-5m/s2Even larger, is one of the major limiting factors for micro-thrust testing and calibration with sub-micron newton accuracy.
Therefore, a dozen international task groups search and research for a long time on the test of high-precision micro-thrust, different and exquisite mechanical sensitive structures such as simple pendulums, torsional balances, inverted pendulums and the like are formed, and the micro-thrust acts on the sensitive structures to cause the change of linear (angular) displacement and measure the linear (angular) displacement, so that a ground test system with various characteristics is formed. The development of these technologies has greatly facilitated the development of high precision micro-propellers (A.J.Jamison, A.D. Ketsdever and E.P.Muntz, Accuta electronics of Nano-Newton Thrustment for microprocessing System Transmission [ C ], EPC-01-236,2001, California, USA; S.Rocca, C.Menon and D.Nicolini, FEEPmicro-third road balance transmission and testing [ J ], Meas.Sci.Techniol.2006, 17: 711-718; Yang Karaoke, research on Thrust performance of micro-Newton propellers [ D ], musician, university of science and technology, 2012). However, the disadvantages of these solutions are also evident: (1) the measurement frequency response is slow, and the process of rapid change of the thrust is difficult to accurately measure; in the scheme of part (2), the self gravity of the elastic structure causes additional test rigidity, so that the test sensitivity is limited; (3) the adjusting process of the test board is complex, and the efficiency is low when different micro-thrusts to be tested are replaced. In view of the above, it is an urgent technical problem to be solved in the art to provide a new test bench device capable of simulating a space environment to overcome the above disadvantages in the prior art.
Disclosure of Invention
An object of the utility model is to the aforesaid of prior art not enough, provide a little ox of wire drawing restraint stops thrust test platform device.
The purpose of the utility model can be realized by the following technical measures:
the utility model provides a little ox thrust test platform device of wire drawing restraint, the device includes:
a mounting frame;
the table body is provided with an accommodating cavity and arranged on the mounting frame, and the accommodating cavity extends along the axial direction of the table body;
the micro propeller is arranged in the platform body accommodating cavity; and
at least one is located the stage body with wire drawing restraint subassembly between the installation frame, every wire drawing restraint subassembly includes a application of force regulating part and three piece at least first wire drawing, application of force regulating part be used for doing the stage body is applyed the pulling force and is first wire drawing loading tension, the one end of first wire drawing is located installation frame, the other end are located the stage body surface, three piece at least wire drawing are in equal intervals each other and are radially laying in the periphery of stage body.
Preferably, the table body is columnar, the first drawn wires are tangent to the cross section of the table body, the fixing points of the at least three first drawn wires on the table body are located on the same circumference, the fixing points of the at least three first drawn wires on the mounting frame are located on the same circumference, and the lengths of the at least three first drawn wires are equal.
Preferably, the number of the first drawn wires is 3, and the included angle between two adjacent first drawn wires is 60 degrees.
Preferably, the table body is transversely arranged, one of the first drawn wires is vertically arranged, and the force application adjusting piece and the vertically arranged first drawn wire are symmetrically arranged on the table body.
Preferably, the force application adjusting part comprises a second drawn wire, a fixed pulley and a force application mechanism, one end of the second drawn wire is arranged on the platform body, and the other end of the second drawn wire is connected with the force application mechanism through the fixed pulley.
Preferably, the force application mechanism is a weight;
and/or an elastic part is arranged on the second drawn wire.
Preferably, the force application adjusting piece comprises a second wire and an elastic piece arranged on the second wire.
Preferably, the elastic member is a spring.
Preferably, the table body is arranged vertically, and the device comprises a suspension member arranged between the table body and the mounting frame.
Preferably, the device further comprises a micrometer arranged on the table body;
or the device also comprises a weak force actuator arranged on the table body and a controller used for controlling the weak force actuator;
or the device is provided with a plurality of micro-propellers which are arranged close to the central shaft of the table body.
The utility model also provides a little newton thrust test platform device of wire drawing restraint, little newton thrust test platform device of wire drawing restraint includes:
a mounting frame;
locate the testing arrangement of installation frame includes: the first table body is provided with a first accommodating cavity and is arranged on the mounting frame through at least one wire drawing constraint component, and the first accommodating cavity extends along the axial direction of the first table body; the micro propeller is arranged in the first accommodating cavity;
locate the contrast device of installation frame includes: a second table body provided with a second accommodating cavity and arranged on the mounting frame through at least one wire drawing constraint assembly, wherein the second accommodating cavity extends along the axial direction of the second table body; the substitute body is arranged in the second accommodating cavity and has the same mass as the micro propeller;
wherein, every wire drawing restraint subassembly includes a application of force regulating part and three piece at least first wire drawing, application of force regulating part be used for the stage body exerts the pulling force and does first wire drawing loading tension, the one end of first wire drawing is located installation frame, the other end are located the stage body surface, three piece at least wire drawing are in the periphery of stage body is equidistant each other and is radially laying.
The utility model discloses a little Newton's thrust test platform device of wire drawing restraint carries out the degree of freedom restraint to the stage body through two at least wire drawing restraint subassemblies, wire drawing restraint subassembly includes a application of force regulating part and three piece at least first wire drawing, the application of force regulating part provides tension for first wire drawing, and the application of force regulating part maintains the tension of the elastic construction of wire drawing restraint subassembly through the regulation of the application of force size of self and slight rotation approximately unchangeable, it is flexible degree of freedom to realize the stage body along its axial translation, all the other four degrees of freedom of stage body are retrained by the tension of wire drawing, gravity and vibration have been reduced to the influence of thrust test.
Drawings
Fig. 1 is a schematic structural diagram of a micro newton thrust test bench device for drawing restraint according to embodiment 1 of the present invention.
Fig. 2 is a side view of the wire drawing constrained micro newton thrust test bench device of embodiment 1 of the present invention.
Fig. 3 is a perspective view of a micro newton thrust test stand device with drawing restraint according to embodiment 1 of the present invention.
Fig. 4 is a schematic structural diagram of a micro newton thrust test bench device for drawing restraint according to embodiment 2 of the present invention.
Fig. 5 is a plan view of a micro newton thrust test bench device with drawing wire constraint according to embodiment 2 of the present invention.
Fig. 6 is a schematic structural diagram of a micro newton thrust test bench device for drawing restraint according to embodiment 3 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following, many aspects of the present invention will be better understood with reference to the drawings. The components in the drawings are not necessarily to scale. Instead, emphasis is placed upon clearly illustrating the components of the present invention. Moreover, in the several views of the drawings, like reference numerals designate corresponding parts.
The word "exemplary" or "illustrative" as used herein means serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" or "illustrative" is not necessarily to be construed as preferred or advantageous over other embodiments. All of the embodiments described below are exemplary embodiments provided to enable persons skilled in the art to make and use the examples of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. In other instances, well-known features and methods have been described in detail so as not to obscure the invention. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.
Example 1
The embodiment 1 of the utility model provides a little newton thrust test platform device of wire drawing restraint, please refer to fig. 1, fig. 2 and fig. 3 and show, this test platform device includes: the device comprises a mounting frame 10, a table body 20, a micro-thruster 30, two wire drawing restraining components 40 and a micrometer 50, wherein the table body 20 is arranged on the mounting frame 10 through the two wire drawing restraining components 40, in the embodiment, the table body 20 is transversely arranged, and the two wire drawing restraining components 40 are respectively arranged at the left end and the right end of the table body 20.
Wherein the mounting frame 10 may be a gas tight system with vacuum maintaining capability for simulating and testing the working condition of the components under vacuum.
The table body 20 has a receiving cavity 20a, the receiving cavity 20a extends along the axial direction of the table body 20, the micro-thruster 30 is fixed in the receiving cavity 20a, and the table body 20 and the micro-thruster 30 form a whole.
Each wire drawing restraining component 40 comprises a force application adjusting part 401 and at least three first wire drawing 402, the force application adjusting part 401 is used for applying a pulling force to the table body 20 and loading a tensile force to the first wire drawing 402, one end of each first wire drawing 402 is arranged on the installation frame 10, the other end of each first wire drawing 402 is arranged on the outer surface of the table body 20, and the first wire drawing 402 are arranged on the outer periphery of the table body 20 at equal intervals and in a radial shape.
In a preferred embodiment, the table body 20 is cylindrical, the cross section of the table body 20 is circular, the first wire drawing 402 is tangent to the circular cross section of the table body 20, the fixing points of at least three first wire drawing 402 on the table body 20 are located on the same circumference, the fixing points of at least three first wire drawing 402 on the mounting frame 10 are located on the same circumference, and the lengths of at least three first wire drawing 402 are equal. Further, the number of the first drawn wires 402 is 3, and an included angle between two adjacent first drawn wires 402 is 60 °, please refer to fig. 2 and 3, wherein one of the first drawn wires 402 is vertically disposed, and the force application adjusting member 401 and the vertically disposed first drawn wire 402 are symmetrically disposed on the table body 20.
Specifically, in a first preferred embodiment, please refer to fig. 2, the force application adjusting member 401 includes a second wire 4011, a fixed pulley 4013 and a force application mechanism 4012, one end of the second wire 4011 is disposed on the table body 20, the other end of the second wire 4011 is connected to the force application mechanism 4012 through the fixed pulley 4013, the fixed pulley 4013 is fixed on the mounting frame 10, the second wire 4011 is tangent to the circular cross section of the table body 20, and the second wire 4011 and the three first wires 402 are coplanar. Preferably, the force application mechanism 4012 is a weight. Preferably, the first and second strands are equal or approximately equal in length.
During the installation of the table body 20, in order to maintain the table body 20 in the configuration shown in the figure, the first wire 402 needs to be preloaded with proper tension, which can be realized by the second wire 4011 with tension T1 and the second wire 4011 with tension T2 bypassing the fixed pulley 4013 fixed on the installation frame 10 and applying proper force by the force application mechanism 4012, and when the force application mechanism 4012 is a weight, by hanging a weight with proper weight.
When the table body 20 is installed, the first wire drawing 402 and the second wire drawing 4011 are kept in tension and have the same length as each other, wherein the length of the first wire drawing 402 is unchanged, and the length of the second wire drawing 4011 is adjustable, so that eight equal-length wire drawings are connected to the edge of the table body 20 from the mounting frame 10 to restrain the independent movement of the table body 20, specifically, three first wire drawing 402 with the tension forces of F1, F2 and F3 are connected from the mounting frame 10 to the outer side of the first end of the table body 20 at 60 degrees tangency to each other, the second wire drawing 4011 with the tension force of T1 and the first wire drawing 402 with the tension force of F1 act on the first side of the table body 20 symmetrically, four wire drawing with the tension forces of F1, F2, F3 and T1 are taken as a group, are coplanar and are perpendicular to the axis of the table body 20, but the torque acting on the swinging table is opposite in direction; four drawing wires having pulling forces of F4, F5, F6 and T2, respectively, as another group are connected from the mounting frame 10 to the outside of the first end of the table body 20 in the same manner.
When the tension of all eight drawn wires is kept, the translation of the table body 20 along the horizontal direction (the axial direction of the table body 20) is a flexible degree of freedom, and the qualitative analysis is as follows: referring to fig. 3, when a slight pushing force acts on the table 20 in the x direction, i.e. the direction perpendicular to the drawing plane, the connection point of the two sets of drawing wires on one side of the table 20 is away from the original plane, because 6 of the drawing wires (the first drawing wire 402) cannot be extended, the table 20 slightly rotates, and the other two drawing wires (the second drawing wire 4011) maintain the tension (approximately) of the entire elastic structure of the drawing wire restraining assembly 40 by the slight rotation of the fixed pulley 4013. The remaining four degrees of freedom of the stage 20 are then directly constrained by the tension of the 8 wires. It can be seen that the test bench device of the present embodiment constrains the bench body 20 with 8 wires, creating a sensitive direction along the x-axis (horizontal direction) suitable for microthrust testing.
Further, in the first preferred embodiment, the second wire 4011 may further include a first elastic member 4014, and the first elastic member 4014 cooperates with the force applying mechanism 4012 to perform fine adjustment (elongation of the first elastic member 4014 and fine rotation of the fixed pulley 4013) when the table 20 slightly rotates due to loading of the tensions of the three first wires 402 and the action of the micro-thrust force on the table 20 in the x direction, so as to maintain the tension of the entire elastic structure of the wire constraint assembly 40 approximately constant. Further, the first elastic member 4014 is a spring.
Specifically, in a second preferred embodiment, please refer to fig. 3, an elastic member is directly disposed on the force application adjusting member 401 as a force application mechanism, the force application adjusting member 401 includes a second drawing wire 4011 and a second elastic member 4015 disposed on the second drawing wire 4011, one end of the second drawing wire 4011 is disposed on the table 20, the other end of the second drawing wire 4011 is disposed on the mounting frame 10, the second drawing wire 4011 is tangent to the circular cross section of the table 20, and the second drawing wire 4011 and the three first drawing wires 402 are disposed in a coplanar manner.
During the installation of the table body 20, the second drawing wire 4011 with the tension of T1 and the second drawing wire 4011 with the tension of T2 are pre-loaded with proper tension for the first drawing wire 402 by the extension of the second elastic part 4015.
When the table body 20 is installed, the first wire 402 and the second wire 4011 both maintain tension and have the same length as each other, wherein the length of the first wire 402 is unchanged, the length of the second wire 4011 is adjusted by the length change of the second elastic member 4015, and when the table body 20 slightly rotates due to the action of micro-thrust on the x direction of the table body 20, the tension (approximate) of the whole elastic structure of the wire constraint assembly 40 is maintained by the extension of the second elastic member 4015 for the two wires (the second wire 4011). Further, the second elastic member 4015 is a spring.
It can be understood that, although the present embodiment has been described in detail by taking the stage body as an example, the present invention does not limit the shape of the stage body, the stage body can be a column, and can also be a rectangular parallelepiped, a sphere, or an irregular shape, only by adjusting the tension and the layout of the first and second wire drawing, other degrees of freedom except the stage body axial direction (x horizontal direction) are satisfied by the constraint of the first and second wire drawing, when the stage body axial direction has a micro-thrust effect and the stage body slightly rotates, the tension of the whole elastic structure of the wire drawing constraint assembly is approximately kept unchanged by compensating through the micro-rotation of the fixed pulley or the extension of the elastic member.
It can be understood that, in the embodiment, although two drawing restraining assemblies disposed at the left and right ends of the stage are taken as an example for description, the drawing restraining assemblies are not limited to two, and may be three or more, and may be uniformly arranged along the axial direction of the stage; when the table body is in a sheet shape (the thickness in the x direction is smaller), the number of the drawing restraining components can be one.
It can be understood that, although the embodiment has been described in detail by taking three first drawing wires as an example, and (i) the second drawing wire is provided with the fixed pulley and the weight, or (ii) the second drawing wire is provided with the force application adjusting member of the elastic member, the number of the first drawing wires may be three or more, and the force application adjusting member may adopt other implementation manners, so long as it is sufficient to provide tension for the first drawing wires and adjust and compensate when the stage body slightly rotates due to the micro-thrust action in the axial direction of the stage body.
The micrometer 50 is used for detecting the displacement of the stage body 20 in the horizontal direction (x-axis direction), the micrometer 50 may be disposed on the stage body 20, and preferably, the micrometer 50 may be disposed at one end of the stage body 20 far away from the micro-thruster 30. Further, the micrometer 50 of the draw wire constrained micro newton thrust test bench device of the present embodiment may be replaced by a weak force actuator, and a controller for controlling the weak force actuator is further provided, so that the test bench device of the present embodiment may perform measurement in a closed-loop control state.
Further, the little newton thrust test platform device of wire drawing restraint of this embodiment can be equipped with a plurality of little propellers 30, a plurality of little propellers 30 are close to the center pin setting of stage body 20 can effectively improve test work's efficiency.
Example 2
The embodiment 2 of the utility model provides a little newton thrust test platform device of wire drawing restraint, please refer to fig. 4 and fig. 5, this test platform device includes: the present embodiment is different from embodiment 1 in that the stage body 20 is vertically disposed, the two drawing-wire restraining components 40 are respectively disposed at upper and lower ends of the stage body 20, and the suspending members 60 are disposed in a vertical direction to compensate for the gravity effect of the stage body 20, wherein the suspending members 60 may be elastic suspending members, for example, including a third drawing wire 601 and a third elastic member 602 disposed on the third drawing wire 601.
In this embodiment, each of the drawing restraining assemblies 40 includes a force applying adjusting member 401 and at least three first drawing wires 402, the force applying adjusting member 401 is used for applying a pulling force to the platform 20 and loading a tension to the first drawing wires 402, one end of each of the first drawing wires 402 is disposed on the mounting frame 10, the other end of each of the first drawing wires 402 is disposed on the outer surface of the platform 20, and the first drawing wires 402 are radially disposed at equal intervals on the outer periphery of the platform 20.
In a preferred embodiment, the table body 20 has a cylindrical shape, the cross section of the table body 20 has a circular shape, and the first wire 402 is tangent to the circular cross section of the table body 20. Further, the number of the first drawn wires 402 is 3, and an included angle between two adjacent first drawn wires 402 is 60 °, please refer to fig. 5, wherein one of the first drawn wires 402 and the force application adjusting member 401 are symmetrically disposed on the table body 20.
Specifically, application of force regulating part 401 includes second wire drawing 4011, fixed pulley 4013 and forcing mechanism 4012, and on this stage body 20 was located to the one end of second wire drawing 4011, the other end passed through fixed pulley 4013 with forcing mechanism 4012 links to each other, and fixed pulley 4013 is fixed in on this installation frame 10, and second wire drawing 4011 is tangent with the circular cross section of stage body 20, and second wire drawing 4011 and three first wire drawing 402 coplane settings. Preferably, the force application mechanism 4012 is a weight.
This embodiment only describes the parts different from embodiment 1, and the parts identical to embodiment 1 are not described again.
Example 3
The embodiment 3 of the utility model provides a little newton's thrust test platform device of wire drawing restraint, please refer to fig. 6, this little newton's thrust test platform device of wire drawing restraint includes: mounting frame 100, test device and comparison device, this test device includes: first stage 201, micro-thruster 301 and wire drawing restraint assembly 40, this contrast device includes: the first table body 201 is arranged on the mounting frame 10 through at least one wire drawing constraint component 40, the first table body 201 is provided with a first accommodating cavity, the first accommodating cavity extends along the axial direction of the first table body 201, and the micro-thruster 301 is arranged in the first accommodating cavity of the first table body 201; the second table body 202 is provided with a second accommodating cavity, the second accommodating cavity extends along the axial direction of the second table body 202, and the substitute body 302 is arranged in the second accommodating cavity of the second table body 202; the mass of the surrogate 302 is the same as the micro-thruster 301. The structure and the arrangement of the wire drawing restraining assembly 40 refer to the above embodiment, and are not described in detail here, and the arrangement of the micrometer is also the same as that of the above embodiment 1.
In order to suppress common mode noise such as ground vibration and temperature fluctuation in a ground test, a differential measurement method is used in the embodiment, that is, two test bench units, namely a test device and a comparison device, are arranged in the same mounting frame, and the comparison device is used as a comparison test bench to deduct the common mode noise and improve the signal-to-noise ratio of the test. In this embodiment, the first stage 201, the micro-thruster 301, and the drawing restraint assembly 40 between the first stage 201 and the mounting frame 100 form a testing device, and the second stage 202, the displacement body 302, and the drawing restraint assembly 40 between the second stage 202 and the mounting frame 100 form a contrasting device.
Further, the first stage 201 and the second stage 202 are each provided with a micrometer or a weak force actuator, the arrangement is the same as that in embodiment 1, the micrometer of the testing device is provided on the first stage 201, for example, may be provided on an end of the first stage 201 away from the micro-thruster 301, and is used for detecting the displacement of the first stage 201 in the horizontal direction (x-axis direction), and the micrometer of the comparison device is provided on an end of the second stage 202 away from the substitute 302, and is used for detecting the displacement of the second stage 202 in the horizontal direction (x-axis direction).
Due to the presence of common mode noise such as ground vibration, temperature fluctuation, etc., the second stage 202 of the comparison device has a displacement in the horizontal direction (hereinafter referred to as a first displacement), which can be measured by a micrometer of the comparison device.
The first stage 201 of the test device is disturbed as the second stage 202 of the comparison device, and the first displacement due to common mode noise is subtracted from the measurement result of the micrometer of the test device.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (11)
1. A draw wire constrained micro newton thrust test bench device, the device comprising:
a mounting frame;
the table body is provided with an accommodating cavity and arranged on the mounting frame, and the accommodating cavity extends along the axial direction of the table body;
the micro propeller is arranged in the platform body accommodating cavity; and
at least one is located the stage body with wire drawing restraint subassembly between the installation frame, wire drawing restraint subassembly includes a application of force regulating part and three piece at least first wire drawing, application of force regulating part be used for the stage body is applyed the pulling force and is first wire drawing loading tension, the one end of first wire drawing is located installation frame, the other end are located the stage body surface, three piece at least wire drawing are in the periphery of stage body is equidistant each other and is radially laying.
2. The wire drawing restraining micro Newton thrust test bench device of claim 1, wherein said table is cylindrical, said first wire drawing is tangential to a cross section of said table, fixing points of said at least three first wire drawing on said table are located on a same circumference, fixing points of said at least three first wire drawing on said mounting frame are located on a same circumference, and lengths of said at least three first wire drawing are equal.
3. The draw-wire-restraining micro newton thrust test rig apparatus of claim 2, wherein the number of first draw wires is 3, and an included angle between two adjacent first draw wires is 60 °.
4. The draw wire restrained micro newton thrust test stand apparatus of claim 3, wherein said stand body is disposed transversely, wherein a first draw wire is disposed vertically, and said force applying adjustment member is disposed symmetrically on said stand body with respect to the vertically disposed first draw wire.
5. The draw wire restrained micro Newton thrust test bench device according to any one of claims 1 to 4, wherein said force applying adjustment member comprises a second draw wire, a fixed pulley and a force applying mechanism, one end of said second draw wire is arranged on said bench body, and the other end of said second draw wire is connected with said force applying mechanism through said fixed pulley.
6. The draw wire restrained micro newton thrust test bed apparatus of claim 5, wherein said force applying mechanism is a weight;
and/or an elastic part is arranged on the second drawn wire.
7. The pull wire restrained micro newton thrust test stand apparatus of claim 1, wherein said force applying adjustment member comprises a second pull wire and a resilient member disposed on said second pull wire.
8. The draw restraining micro newton thrust test rig apparatus of claim 6 or 7, wherein said resilient member is a spring.
9. The draw-restraining micro newton thrust test bench device of claim 1, wherein said table is vertically disposed, said device including a hanger disposed between said table and said mounting frame.
10. The draw restraint micro newton thrust test bed apparatus of claim 1, further comprising a micrometer disposed on said bed;
or the device also comprises a weak force actuator arranged on the table body and a controller used for controlling the weak force actuator;
or the device is provided with a plurality of micro-propellers which are arranged close to the central shaft of the table body.
11. The utility model provides a little Newton's thrust test platform device of wire drawing restraint which characterized in that, little Newton's thrust test platform device of wire drawing restraint includes:
a mounting frame;
locate the testing arrangement of installation frame includes: the first table body is provided with a first accommodating cavity and is arranged on the mounting frame through at least one wire drawing constraint component, and the first accommodating cavity extends along the axial direction of the first table body; the micro propeller is arranged in the first accommodating cavity;
locate the contrast device of installation frame includes: a second table body provided with a second accommodating cavity and arranged on the mounting frame through at least one wire drawing constraint assembly, wherein the second accommodating cavity extends along the axial direction of the second table body; the substitute body is arranged in the second accommodating cavity and has the same mass as the micro propeller;
wherein, every wire drawing restraint subassembly includes a application of force regulating part and three piece at least first wire drawing, application of force regulating part be used for the stage body exerts the pulling force and does first wire drawing loading tension, the one end of first wire drawing is located installation frame, the other end are located the stage body surface, three piece at least wire drawing are in the periphery of stage body is equidistant each other and is radially laying.
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| CN201920887343.2U CN210802750U (en) | 2019-06-13 | 2019-06-13 | Little Newton's thrust test platform device of wire drawing restraint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333022A (en) * | 2019-06-13 | 2019-10-15 | 中国科学院测量与地球物理研究所 | The Micro-Newton thrust test board device of wire drawing constraint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333022A (en) * | 2019-06-13 | 2019-10-15 | 中国科学院测量与地球物理研究所 | The Micro-Newton thrust test board device of wire drawing constraint |
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