CN117288377B - Torsion pendulum type micro-thrust measurement on-line calibration device - Google Patents
Torsion pendulum type micro-thrust measurement on-line calibration device Download PDFInfo
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- CN117288377B CN117288377B CN202311132823.5A CN202311132823A CN117288377B CN 117288377 B CN117288377 B CN 117288377B CN 202311132823 A CN202311132823 A CN 202311132823A CN 117288377 B CN117288377 B CN 117288377B
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- 238000005259 measurement Methods 0.000 title claims abstract description 38
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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Abstract
The invention discloses a torsion pendulum type micro-thrust measurement online calibration device, which comprises: a vacuum vessel configured as a cavity having a sealed space; twisting, namely performing torsion after receiving micro-thrust; the torsion wire is used for connecting the torsion pendulum; the displacement sensor is used for monitoring the torsion pendulum displacement; the positioning plate is arranged in the vacuum container; the positioning rod is arranged on the positioning plate; the positioning plate is rotationally connected in the vacuum container so that the vacuum container has a vacuumizing state and a vacuum state; when the vacuum container is in a vacuumizing state, the positioning plate is turned over to be in a horizontal state, and the positioning rod is contacted with the torsion pendulum; when the vacuum container is in a vacuum state, the positioning plate is turned over to an inclined state and is positioned below the torsion pendulum; the invention can reduce the interference to torsion pendulum so as to improve the measurement accuracy.
Description
Technical Field
The invention belongs to the technical field of force measuring devices, and particularly relates to a torsion pendulum type micro-thrust measurement online calibration device.
Background
In the torsion pendulum type micro-thrust measuring process, leveling is needed under the atmosphere, so that the balance bar is perpendicular to the torsion wire, and meanwhile, the balance bar is horizontally positioned at a set initial position, thus, the relative position between the electromagnet and the wire in the electromagnetic standard force device can be ensured, and meanwhile, the ideal distance is obtained by the laser displacement sensor. However, experiments show that the air flow disturbance is caused in the vacuumizing process, the ground vibration is caused by the vacuum pump, and the like, so that the balance rod deviates from the initial position in the vacuum state, and errors are caused to measurement.
Disclosure of Invention
The summary of the application is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. The summary of the application is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
The invention provides a torsion pendulum type micro-thrust measurement online calibration device for overcoming the defects of the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a torsion pendulum type micro-thrust measurement online calibration device comprises: a vacuum vessel configured as a cavity having a sealed space; twisting, namely performing torsion after receiving micro-thrust; the torsion wire is used for connecting the torsion pendulum; the displacement sensor is used for monitoring the torsion pendulum displacement; the positioning plate is arranged in the vacuum container; the positioning rod is arranged on the positioning plate; the positioning plate is rotationally connected in the vacuum container so that the vacuum container has a vacuumizing state and a vacuum state; when the vacuum container is in a vacuumizing state, the positioning plate is turned over to be in a horizontal state, and the positioning rod is contacted with the torsion pendulum; when the vacuum container is in a vacuum state, the positioning plate is turned over to an inclined state and is positioned below the torsion pendulum.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the mounting frame is arranged in the vacuum container; the mounting plate is arranged in the mounting frame; the elastic piece is used for connecting the mounting frame and the mounting plate; the locating plate rotates to be connected on the mounting panel, is equipped with the cavity on the mounting panel, and cavity lateral wall and vacuum vessel inner wall contact.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the support plate is arranged on the mounting plate; the air cylinder is arranged on the supporting plate and used for pushing the positioning plate to turn over; the first connecting block is provided with a positioning plate; the first connecting block is provided with a first movable groove for the positioning rod to move.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the first connecting rod is movably connected with one end of the positioning rod; the second connecting rod is movably connected with the other end of the first connecting rod; the first pushing block is arranged below the second connecting rod; the bottom of the first movable groove is provided with a second movable groove for the second connecting rod to move, and when the locating plate is turned to a horizontal state, the first pushing block pushes the second connecting rod to move.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the first push rod pushes the first push block to move; the second connecting block is arranged on the mounting plate; the convex block is arranged on the second connecting block; the positioning plate is provided with a first groove corresponding to the second connecting block.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the movable rod is provided with a third movable groove for the second connecting rod to move; the second push rod is arranged above the second connecting rod; the top of the first movable groove is provided with a fourth movable groove for the second push rod to move, and the second push rod pushes the second connecting rod to move in the third movable groove when extending out of the fourth movable groove.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the first limiting block is used for fixing the second connecting rod on the movable rod; the third push rod is arranged on the second connecting rod to push the first limiting block to move; the inner wall of the third movable groove is provided with a first limit groove corresponding to the first limit block, and the second push rod pushes the third push rod to move when moving towards the direction of the second connecting rod.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the friction block is arranged on the positioning plate; the first movable block is arranged at one end of the friction block; the baffle is arranged on the mounting plate; the positioning plate is provided with a second groove for accommodating the friction block; the positioning plate is provided with a first through groove for the first movable block to move, a piston rod of the air cylinder is connected to the first movable block, and the first movable block drives the friction block to move when moving relative to the positioning plate.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the transmission rod is connected with the second push rod; the second movable block is arranged on the first movable block; the first push plate is arranged on the second movable block; the first movable block is provided with a second through groove for the second movable block to move, and the first push plate pushes the transmission rod to rotate when moving along with the second movable block, and the transmission rod pushes the second push rod to move out of the fourth movable groove.
Further, the torsion pendulum type micro-thrust measurement on-line calibration device further comprises: the second limiting block is used for fixing the second connecting rod in the second movable groove; the first connecting spring is arranged at one end of the second connecting rod; the first reset spring pushes the first push block to move back; the second connecting rod is provided with a second limiting groove corresponding to the second limiting block, and when the first reset spring pushes the first push block to move, the first push block drives the second limiting block to move so that the second limiting block is out of contact with the second connecting rod.
The invention has the advantages that: the torsion pendulum type micro-thrust measurement online calibration device is capable of reducing interference to torsion pendulum.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application.
In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.
In the drawings:
FIG. 1 is a schematic structural diagram of a torsion pendulum type micro-thrust measurement on-line calibration device according to an embodiment of the present invention.
FIG. 2 is an internal schematic diagram of the torsion pendulum type micro-thrust measurement online calibration device in the embodiment shown in FIG. 1.
FIG. 3 is a cross-sectional view of a positioning plate of the torsional pendulum type micro-thrust measurement online calibration device in the embodiment shown in FIG. 1.
Fig. 4 is an enlarged view at a in fig. 3.
FIG. 5 is a cross-sectional view of a positioning rod of the torsional pendulum type micro-thrust measurement online calibration device in the embodiment shown in FIG. 1.
Fig. 6 is an enlarged view at B in fig. 5.
FIG. 7 is a cross-sectional view of a first connection block of the torsional pendulum type micro thrust measurement online calibration device of the embodiment shown in FIG. 1.
Fig. 8 is an enlarged view at C in fig. 7.
Fig. 9 is an enlarged view of D in fig. 8.
FIG. 10 is a cross-sectional view of a second movable block of the torsional pendulum type micro thrust measurement online calibration device of the embodiment of FIG. 1.
Fig. 11 is an enlarged view at E in fig. 10.
The meaning of the reference numerals in the figures is as follows:
101. A vacuum container; 102. twisting; 103. twisting wires; 104. an insulating clamp; 105. a connector; 1051. a connecting disc; 106. an electric propeller; 107. balancing weight; 108. a permanent magnet; 109. a U-shaped conductor; 110. a gas pipe; 111. a mounting frame; 112. a mounting plate; 1121. a third connecting block; 1122. a baffle; 1123. a support plate; 113. an elastic member; 114. a positioning plate; 1141. a first connection block; 1142. a third connecting rod; 115. a friction block; 1151. a fourth push rod; 116. a cylinder; 117. a first movable block; 1171. a second slider; 1172. a third return spring; 118. a second movable block; 1181. a first push plate; 1182. a third slider; 1183. a fourth return spring; 119. a positioning rod; 120. a first connecting rod; 121. a second connecting rod; 122. a movable rod; 123. a first connecting spring; 124. a first push block; 1241. a first push rod; 1242. a first slider; 1243. a first return spring; 125. a third push rod; 1251. a third push plate; 1252. a support spring; 126. a first limiting block; 1261. a second connecting spring; 127. a second push rod; 128. a transmission rod; 129. a second push block; 130. a second return spring; 131. a second connection block; 1311. a bump; 132. a second limiting block; 1321. a third connecting spring; 133. a third push plate; 1331. a fourth connecting rod; 1332. a fifth return spring; 1333. and a third push block.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.
It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.
The names of messages or information interacted between the various devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.
The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1-11, a torsion pendulum type micro-thrust measurement online calibration device includes: vacuum vessel 101, torsion pendulum 102, torsion wire 103, displacement sensor, positioning plate 114, and positioning rod 119.
The vacuum vessel 101 is configured as a cavity having a sealed space; the torsion pendulum 102 receives the micro-thrust and then twists; the torsion wire 103 is used for connecting the torsion pendulum 102; the displacement sensor is used for monitoring the displacement of the torsion pendulum 102; the positioning plate 114 is arranged in the vacuum container 101; the positioning rod 119 is arranged on the positioning plate 114; the positioning plate 114 is rotatably connected in the vacuum container 101 so that the vacuum container 101 has a vacuumized state and a vacuum state; when the vacuum container 101 is in a vacuumizing state, the positioning plate 114 is turned over to be in a horizontal state, and the positioning rod 119 is contacted with the torsion pendulum 102; when the vacuum vessel 101 is in a vacuum state, the positioning plate 114 is turned to an inclined state under the torsion pendulum 102.
Specifically, the vacuum container 101 is of a box structure, connectors 105 are respectively arranged at the top and the bottom of the vacuum container 101, one end of a torsion wire 103 is fixed on the connectors 105, the top and the bottom of a torsion pendulum 102 are respectively provided with the torsion wire 103, an insulating clamp 104 is arranged on the torsion wire 103 and used for clamping the torsion pendulum 102, a balancing weight 107 is arranged on the torsion pendulum 102, the balancing weight 107 is arranged at two ends of the torsion pendulum 102, and the balancing weight 107 is used for adjusting the torsion center and horizontal balance of the torsion pendulum 102; the torsion pendulum 102 is also provided with an electric propeller 106 and a permanent magnet 108, the electric propeller 106 and the permanent magnet 108 are respectively arranged at two ends of the torsion pendulum 102, the permanent magnet is provided with a U-shaped conductor 109, and the permanent magnet 108 and the U-shaped conductor 109 generate standard weak force after being electrified so as to twist the torsion pendulum 102 and generate torsion angles which are beneficial to angular displacement measurement; the torsion wire 103 can be used as a selection of propeller power supply lines to form a power supply loop.
More specifically, the connector 105 is rotatably connected with the connecting disc 1051, the torsion wire 103 is fixedly connected to the connecting disc 1051, the connector 105 is provided with a motor for driving the connecting disc 1051 to rotate, the motor is a stepping motor, the rotation precision is better than 1 milliradian, the fixed end of the torsion wire 103 is to be fixed through the rotating device to rotate, so that the fine adjustment of the position of the balance bar is realized under the condition that the torsion wire 103 is not changed, the torsion wire is returned to the set position, and meanwhile, the torsion wire 103 is ensured to return to a free state.
The vacuum container 101 is made of transparent materials, and the displacement sensor is arranged on the outer side of the vacuum container 101, so that the displacement sensor can directly measure the distance of the torsion pendulum 102 through the vacuum container 101.
When the vacuum container 101 is vacuumized, the positioning plate 114 is turned to be in a horizontal state, so that the positioning rod 119 is in contact with the torsion pendulum 102, the positioning rod 119 has a fixing effect on the torsion pendulum 102, deflection of the torsion pendulum 102 when the vacuum container 101 is vacuumized is avoided, interference on the torsion pendulum 102 is reduced, and measurement accuracy is improved; after the vacuum environment in the vacuum container 101 is formed, the positioning plate 114 is turned to be in an inclined state and separated from the torsion pendulum 102, so that the positioning plate 114 is positioned below the torsion pendulum 102, and the rotation of the torsion pendulum 102 is prevented from being influenced by the positioning plate 114.
The vacuum container 101 is internally provided with a mounting frame 111, the mounting frame 111 is fixedly connected to the inner wall of the vacuum container 101, the mounting frame 111 is internally provided with a mounting plate 112 and a plurality of elastic pieces 113, the elastic pieces 113 are respectively arranged on different inner walls of the mounting frame 111, the elastic pieces 113 are bent to be arc-shaped thin metal sheets, one side of each elastic piece 113 is fixedly connected to the inner wall of the mounting frame 111, and the other side of each elastic piece 113 is fixedly connected to the mounting plate 112, so that the mounting plate 112 is connected to the inside of the mounting frame 111 through the elastic pieces 113; the mounting plate 112 is provided with a cavity, the side wall of the cavity is made of elastic materials, air is filled in the cavity, and the side wall of the cavity is in contact with the inner wall of the vacuum container 101.
The mounting plate 112 is provided with a third connecting block 1121, the positioning plate 114 is rotatably connected to the third connecting block 1121, a supporting plate 1123 is arranged below the third connecting block 1121, and an air cylinder 116 is arranged on the supporting plate 1123; the positioning plate 114 is provided with a first connecting block 1141, the first connecting block 1141 is provided with a first movable groove, the positioning rod 119 is arranged in the first movable groove, one end of the positioning rod 119 is in a circular arc structure, and the contact area between the positioning rod 119 and the torsion pendulum 102 is reduced, so that the influence of the positioning rod 119 on the torsion pendulum 102 is reduced; the first movable groove bottom is equipped with the second movable groove, is equipped with second connecting rod 121 in the second movable groove, and second connecting rod 121 wears to locate first movable inslot, and second connecting rod 121 links to each other through a head rod 120 with locating lever 119, and head rod 120 one end articulates on locating lever 119, and the other end articulates on second connecting rod 121.
Specifically, a fifth movable groove is formed in the bottom of the second movable groove, a movable rod 122 is arranged in the fifth movable groove, a third movable groove is formed in the movable rod 122, and a second connecting rod 121 penetrates through the third movable groove; a first movable cavity is arranged below the fifth movable groove, a first push block 124 is arranged in the first movable cavity, a first through cavity is arranged on the side wall of the first movable cavity, a first push rod 1241 is arranged on the first push block 124, and the first push rod 1241 is arranged in the first through cavity in a penetrating mode; a first groove is formed in one end of the first through cavity, a second connecting block 131 is arranged on the mounting plate 112, a convex block 1311 is arranged on the second connecting block 131, the second connecting block 131 is arranged in the first groove in a penetrating mode, and one end of a first push rod 1241 is also arranged in the first groove; the top of the first through cavity is provided with a first sliding groove, a first sliding block 1242 corresponding to the first sliding groove is arranged on the first push rod 1241, and a first reset spring 1243 is arranged on the first sliding block 1242.
The first push block 124 is provided with an inclined plane, the bottom of the second connecting rod 121 is provided with a first connecting spring 123, the bottom end of the first connecting spring 123 is fixedly connected to the bottom of the third movable groove, the side wall of the second connecting rod 121 is provided with a sixth movable groove, a first limiting block 126 is arranged in the sixth movable groove, the first limiting block 126 is connected to the sixth movable groove through a second connecting spring 1261, the inner wall of the third movable groove is provided with a first limiting groove corresponding to the first limiting block 126, the second connecting rod 121 is provided with a second through cavity, the second through cavity is provided with a third push rod 125, the top of the third push rod 125 is provided with a second push plate, the bottom of the second push plate is provided with a supporting spring 1252, the third push rod 125 is also provided with a first connecting rope, and one end of the first connecting rope is fixedly connected to the first limiting block 126.
The first movable groove top is equipped with the fourth movable groove, be equipped with second push rod 127 in the fourth movable groove, be equipped with third connecting rod 1142 on the first connecting piece 1141, be equipped with on the third connecting rod 1142 with the communicating second movable chamber in fourth movable groove, be equipped with transfer line 128 in the second movable chamber, transfer line 128 middle part rotates to be connected in the second movable intracavity, transfer line 128 one end articulates on second push rod 127, second movable chamber bottom wears to be equipped with second push block 129, second push block 129 top is equipped with the limiting plate, make second push block 129 unable to fall out from the second movable intracavity, second movable chamber top is equipped with second reset spring 130, second reset spring 130 bottom supports in transfer line 128 one end.
The positioning plate 114 is provided with a second groove, and a friction block 115 is arranged in the second groove; the positioning plate 114 is also provided with a first through groove, a first movable block 117 is arranged in the first through groove, a second slide block 1171 is arranged on the side wall of the first movable block 117, a second slide groove corresponding to the second slide block 1171 is arranged on the inner wall of the first through groove, a third reset spring 1172 is arranged on the second slide block 1171, a fourth push rod 1151 is arranged on the friction block 115, and one end of the fourth push rod 1151 is arranged in the second slide groove in a penetrating manner; the first movable block 117 is provided with a second through groove, a second movable block 118 is arranged in the second through groove, a first push plate 1181 is arranged at the top of the second movable block 118, a third sliding block 1182 is arranged on the side wall of the second movable block 118, a third sliding groove corresponding to the third sliding block 1182 is arranged on the inner wall of the second through groove, and a fourth reset spring 1183 is arranged on the third sliding block 1182; the piston rod of the air cylinder 116 is hinged to the bottom of the second movable block 118; the mounting plate 112 is provided with a horizontally disposed baffle 1122 that limits the maximum angle at which the positioning plate 114 can be flipped.
When the vacuum container 101 is vacuumized, the air cylinder 116 pushes the positioning plate 114 in an inclined state to turn to a horizontal state, the positioning plate 114 is positioned at the bottom of the torsion pendulum 102 after being abutted against the baffle 1122, the first movable block 117 is positioned in the first through groove, the second movable block 118 is positioned in the second through groove, the friction block 115 is positioned at the bottom of the second groove and is not in contact with the torsion pendulum 102, the lug 1311 is inserted into the first groove to push the first push rod 1241 to move, the first push rod 1241 drives the first push block 124 to move, the first push rod 1241 pushes the movable block to move, the second connecting rod 121 moves along with the movable rod 122, the second connecting rod 121 drives the first connecting rod 120 to move, the first connecting rod 120 pushes the positioning rod 119 out of the first movable groove, the positioning rod 119 stretches out to be abutted against the side wall of the torsion pendulum 102, the positioning rod 119 is utilized to support and position the torsion pendulum 102, and deflection of the torsion pendulum 102 is avoided during vacuumization; after the vacuumizing operation is finished, the cylinder 116 continues to drive the piston rod to extend, the piston rod pushes the second movable block 118 to move, the second movable block 118 drives the first movable block 117 to move together, the second slide block 1171 pushes the fourth push rod 1151 to move, the friction block 115 rises together with the fourth push rod 1151, the top surface of the friction block 115 is contacted with the bottom surface of the torsion pendulum 102, after the fourth push rod 1151 moves to the top of the second sliding groove, the second movable block 118 moves relative to the first movable block 117, the first push plate 1181 moves to the bottom of the second push block 129 to push the second push block 129 to move, the second push block 129 pushes one end of the transmission rod 128 to move, the transmission rod 128 rotates to drive the second push rod 127 to move downwards, the second push rod 127 moves to the outside of the fourth movable groove to abut against the second push plate, the second push rod 127 pushes the second push plate to move, the first connecting rope pulls the first limiting block 126 to be separated from the first limiting groove, the second push rod 127 continues to move, the second push rod 121 moves to the third movable groove, the second connecting rod 121 drives the first connecting rod 120 to move, and the positioning rod 119 moves to the first torsion pendulum 102 to be separated from the torsion pendulum 102 to provide a fixed positioning force after the torsion pendulum 102 is prevented from being deflected; the cylinder 116 drives the piston rod to shrink, and the positioning plate 114 is turned down to an inclined state to be out of contact with the torsion pendulum 102 after the first movable block 117 and the second movable block 118 are reset, so that the test operation is performed normally.
A seventh movable groove is formed in the inner wall of the second movable groove, a second limiting block 132 is arranged in the seventh movable groove, one end of the second limiting block 132 is of a circular arc structure, the second limiting block 132 is connected in the seventh movable groove through a third connecting spring 1321, a second limiting groove corresponding to the second limiting block 132 is formed in the second connecting rod 121, a third movable cavity is formed in the bottom of the seventh movable groove and extends to one side of the first movable cavity, an eighth movable groove is formed in the side wall of the third movable cavity, a third push plate 1331251 is arranged in the third movable cavity, a third push plate 1331251 penetrates through the seventh movable groove, a third groove corresponding to the third push plate 1331251 is formed in the bottom of the second limiting block 132, a fourth connecting rod 1331 is arranged on the third push plate 1331251, a third push block 1333 is arranged on the fourth connecting rod 1331 and extends out of the eighth movable groove, and a fifth reset spring 1332 is arranged on the fourth connecting rod 1331.
When the second push rod 127 pushes the second connecting rod 121 to move downwards, the second limiting groove moves to one side of the second limiting block 132, the second limiting block 132 is inserted into the second limiting groove, after the first movable block 117 and the second movable block 118 are reset, the second connecting rod 121 is still fixed in the second movable groove, the cylinder 116 drives the piston rod to move backwards, the positioning plate 114 is turned to an inclined state, the protruding block 1311 is separated from the first groove, the first return spring 1243 pushes the first push rod 1241 to move backwards, the first push block 124 pushes the third push block 1333 to move when moving towards one end of the first movable cavity, the first connecting spring 123 pushes the movable rod 122 to move downwards after the first push block 124 moves from the bottom of the movable rod 122, and the first push block 124 pushes the third push block 1333 to move so as to drive the second limiting block 132 to move, and the second limiting block 132 moves out of the second limiting groove; when the first push block 124 moves to the bottom of the movable rod 122 to push the movable rod 122 to move, the first limiting block 126 is embedded in the first limiting groove, the second limiting block 132 is embedded in the second limiting groove, and as one end of the second limiting block 132 is in a circular arc structure, the second limiting block 132 is separated from the second limiting groove when the second connecting rod 121 moves under the pushing of the first push block 124, so that the positioning rod 119 extends normally.
The bottom of the vacuum container 101 is provided with the air delivery pipe 110, the air delivery pipe 110 is of a C-shaped structure, the air delivery pipe 110 is provided with a plurality of air inlets, the side wall of the vacuum container 101 is provided with an exhaust pipe communicated with the air delivery pipe 110, and the air flow flows more uniformly in the vacuum container 101 through the arrangement of the plurality of air inlets, so that the influence of the air flow on the torsion pendulum 102 is reduced; the air pump can be provided with a damping structure, so that the influence on the device is reduced, and the measuring accuracy is further guaranteed.
The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the invention. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.
Claims (10)
1. A torsion pendulum type micro-thrust measurement online calibration device comprises:
a vacuum vessel configured as a cavity having a sealed space;
twisting, namely performing torsion after receiving micro-thrust;
The torsion wire is used for connecting the torsion pendulum;
the displacement sensor is used for monitoring the torsion pendulum displacement;
The method is characterized in that:
the torsion pendulum type micro-thrust measurement online calibration device further comprises:
the positioning plate is arranged in the vacuum container;
The positioning rod is arranged on the positioning plate;
the positioning plate is rotationally connected in the vacuum container so that the vacuum container has a vacuumizing state and a vacuum state;
When the vacuum container is in a vacuumizing state, the positioning plate is turned over to be in a horizontal state, and the positioning rod is in contact with the torsion pendulum; when the vacuum container is in a vacuum state, the positioning plate is turned to an inclined state and is positioned below the torsion pendulum.
2. The torsion pendulum type micro-thrust measurement online calibration device according to claim 1, wherein: further comprises:
The mounting frame is arranged in the vacuum container;
the mounting plate is arranged in the mounting frame;
The elastic piece is used for connecting the mounting frame and the mounting plate;
the locating plate is rotationally connected to the mounting plate, a cavity is formed in the mounting plate, and the side wall of the cavity is in contact with the inner wall of the vacuum container.
3. The torsion pendulum type micro-thrust measurement online calibration device according to claim 2, wherein: further comprises:
the support plate is arranged on the mounting plate;
The air cylinder is arranged on the supporting plate and used for pushing the positioning plate to turn over;
the first connecting block is arranged on the positioning plate;
The first connecting block is provided with a first movable groove for the positioning rod to move.
4. The torsion pendulum type micro-thrust measurement online calibration device according to claim 3, wherein: further comprises:
the first connecting rod is movably connected with one end of the positioning rod;
the second connecting rod is movably connected with the other end of the first connecting rod;
The first pushing block is arranged below the second connecting rod;
the bottom of the first movable groove is provided with a second movable groove for the second connecting rod to move, and when the locating plate is turned to a horizontal state, the first pushing block pushes the second connecting rod to move.
5. The torsion pendulum type micro-thrust measurement online calibration device according to claim 4, wherein: further comprises:
the first push rod pushes the first push block to move;
The second connecting block is arranged on the mounting plate;
The convex block is arranged on the second connecting block;
The positioning plate is provided with a first groove corresponding to the second connecting block.
6. The torsion pendulum type micro-thrust measurement online calibration device according to claim 4, wherein: further comprises:
the movable rod is provided with a third movable groove for the second connecting rod to move;
The second push rod is arranged above the second connecting rod;
the top of the first movable groove is provided with a fourth movable groove for the second push rod to move, and the second push rod pushes the second connecting rod to move into the third movable groove when extending out of the fourth movable groove.
7. The torsion pendulum type micro-thrust measurement online calibration device according to claim 6, wherein: further comprises:
The first limiting block is used for fixing the second connecting rod on the movable rod;
the third push rod is arranged on the second connecting rod and pushes the first limiting block to move;
the inner wall of the third movable groove is provided with a first limit groove corresponding to the first limit block, and the second push rod pushes the third push rod to move when moving towards the direction of the second connecting rod.
8. The torsion pendulum type micro-thrust measurement online calibration device according to claim 6, wherein: further comprises:
the friction block is arranged on the positioning plate;
The first movable block is arranged at one end of the friction block;
The baffle plate is arranged on the mounting plate;
the positioning plate is provided with a second groove for accommodating the friction block; the positioning plate is provided with a first through groove for the first movable block to move, a piston rod of the air cylinder is connected to the first movable block, and the first movable block drives the friction block to move when moving relative to the positioning plate.
9. The torsion pendulum type micro-thrust measurement online calibration device according to claim 8, wherein: further comprises:
the transmission rod is connected with the second push rod;
The second movable block is arranged on the first movable block;
The first pushing plate is arranged on the second movable block;
The first movable block is provided with a second through groove for the second movable block to move, the first push plate pushes the transmission rod to rotate when moving along with the second movable block, and the transmission rod pushes the second push rod to move out of the fourth movable groove.
10. The torsion pendulum type micro-thrust measurement online calibration device according to claim 4, wherein: further comprises:
The second limiting block is used for fixing the second connecting rod in the second movable groove;
the first connecting spring is arranged at one end of the second connecting rod;
The first reset spring pushes the first pushing block to move back;
The second connecting rod is provided with a second limiting groove corresponding to the second limiting block, and when the first reset spring pushes the first push block to move, the first push block drives the second limiting block to move so that the second limiting block is out of contact with the second connecting rod.
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| CN202311132823.5A CN117288377B (en) | 2023-09-05 | 2023-09-05 | Torsion pendulum type micro-thrust measurement on-line calibration device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895936A (en) * | 2017-04-11 | 2017-06-27 | 南京理工大学 | A kind of adjustable torsional pendulum type Micro-thrust test device of precision |
| CN108414127A (en) * | 2018-02-01 | 2018-08-17 | 南京航空航天大学 | Compensation Micromass cell culture torsion balance |
| CN112213015A (en) * | 2020-08-24 | 2021-01-12 | 电子科技大学 | Micro-thrust measuring device |
| CN115307803A (en) * | 2022-08-10 | 2022-11-08 | 中国科学院空间应用工程与技术中心 | Torsional pendulum device for measuring impulse force and continuous force of propeller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230150696A1 (en) * | 2021-11-16 | 2023-05-18 | Aerospace Engineering University of the People's Liberation Army (PLA) Strategic Support Force | Digital filter based method for measuring thrust response time of satellite-borne micro-thruster |
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- 2023-09-05 CN CN202311132823.5A patent/CN117288377B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895936A (en) * | 2017-04-11 | 2017-06-27 | 南京理工大学 | A kind of adjustable torsional pendulum type Micro-thrust test device of precision |
| CN108414127A (en) * | 2018-02-01 | 2018-08-17 | 南京航空航天大学 | Compensation Micromass cell culture torsion balance |
| CN112213015A (en) * | 2020-08-24 | 2021-01-12 | 电子科技大学 | Micro-thrust measuring device |
| CN115307803A (en) * | 2022-08-10 | 2022-11-08 | 中国科学院空间应用工程与技术中心 | Torsional pendulum device for measuring impulse force and continuous force of propeller |
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| Title |
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| 双丝扭秤微推力测量系统;马隆飞;贺建武;薛森文;段俐;康琦;;推进技术;20180226(第04期);全文 * |
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