Balance type thrust measuring device for micro-cattle magnitude electric thruster
By designing a balance-type thrust measuring device for Weuk-level electric thrust, using technical means such as tracheal fixing clips and cable accommodation channels, the problem of difficulty in measuring Weuk-level thrust in existing devices is solved, and a thrust measurement effect with high sensitivity and fast response is achieved.
Patent Information
- Application Number
- CN202421197934.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The existing balance-type force measuring device is mainly used for milliNuo thrust testing, and it is difficult to effectively measure the thrust and thrust response of Weuk thrust thrusts, and the errors caused by changes in stresses such as power supply cables and gas supply pipelines are relatively large.
A balance-type thrust measuring device for Wektull magnitude electric thrust is designed, and the adapted tracheal tube is clamped with a tracheal fixed clamp, and the influence of tracheal stress and strain on thrust measurement is reduced through the tracheal winding and the winding swing arm. At the same time, the cable passes out through the cable accommodating channel of the intermediate pivot, reducing the impact of the cable due to the heating of the thrust operation.
High sensitivity and rapid response to thrust measurement of Webull magnitude electric thrust is achieved, reducing the impact of cable and air duct stress strain on thrust measurement.
Smart Images
Figure CN222689302U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring devices, in particular to a balance type thrust measuring device for a micro-newton-level electric thruster. Background Art
[0002] The earliest research on the measurement method of micro-thrust in China began with the measurement of arc thrusters using the balance force measurement method. The balance force measuring device can be used to measure the thrust of micro-electric thrusters. After installing the thruster and related equipment, it is necessary to adjust the balance to eliminate the influence of the thruster's own weight on the thrust test. During the test, the thrust generated by the thruster will cause a slight twist in the thrust frame balance. According to the degree of this twist and the calibration of the thruster in advance, the thrust generated by the thruster can be calculated. The characteristics of the balance thrust frame are high sensitivity, which can better reflect the process of thrust change of the thruster; the structure is simple and reliable, and does not require complex force measurement structures. However, it is also susceptible to limitations such as the influence of the medium supply pipeline and measurement and control cables, and the noise introduced by the thruster and accessories.
[0003] At present, the balance force measuring device is mainly used for millinewton thrust test. When the thrust of the thruster is reduced to the micronewton level, the error caused by the change of stress of the power supply cable, gas supply pipeline, etc. will have a greater impact on the thrust test. In order to meet the needs of thrust and thrust response test of micronewton thruster, it is of great significance to study a balance force measuring device that can be used for thrust measurement of micronewton electric thruster. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a balance type thrust measuring device for a micro-newton level electric thruster, which can reduce the influence of the temperature rise of the cable due to the thruster during operation.
[0005] In order to solve the above problems, the utility model adopts the following technical solutions:
[0006] A balance thrust measuring device for a micro-newton electric thruster comprises a mounting base, an intermediate pivot, a damping generating device, a sensor assembly, a balance adjusting device, a thruster fixing bracket and an air pipe fixing clamp.
[0007] The sensor assembly and the damping generating device are both assembled on a mounting base.
[0008] A vertical beam is arranged on the mounting base, the intermediate pivot is configured to be detachably connected to the vertical beam, and the air pipe fixing clamp is arranged on the vertical beam.
[0009] The intermediate pivot has a winding swing arm, and the thruster fixing bracket and the balance adjustment device are respectively arranged at two ends of the winding swing arm.
[0010] The damping generating device is used to provide damping for the balance adjusting device.
[0011] The sensor assembly is located at one side of the balance adjustment device, and the sensor assembly is used to detect the displacement of the balance adjustment device.
[0012] The middle pivot has a cable accommodating channel inside, and the middle pivot is provided with a wire inlet, which is communicated with the cable accommodating channel.
[0013] The balance-type thrust measurement device for a micronewton-class electric thruster provided in at least one embodiment of the present disclosure further includes: a limit device for blocking the winding swing arm to prevent the winding swing arm from over-rotating.
[0014] Wherein, the limiting device is fixedly arranged on the mounting base.
[0015] The limiting device is located between the intermediate pivot and the thruster fixing bracket.
[0016] The balance-type thrust measurement device for a micronewton-level electric thruster provided in at least one embodiment of the present disclosure further includes: a calibration device.
[0017] Wherein, the calibration device includes a reference component and a movable component, the movable component is arranged below the thruster fixing bracket, and the movable component is fixedly connected to the winding swing arm.
[0018] The contrast component is fixedly connected to the mounting base.
[0019] In a balance thrust measurement device for a micronewton-class electric thruster provided in at least one embodiment of the present disclosure, the damping generating device comprises a first permanent magnet and a second permanent magnet, and both the first permanent magnet and the second permanent magnet are provided with a slot body.
[0020] One end of the balance adjustment device is inserted into the slot of the first permanent magnet, and the other end of the balance adjustment device is inserted into the slot of the second permanent magnet. Both ends of the balance adjustment device are configured to generate damping when the slot moves by cutting the magnetic flux lines.
[0021] In the balance-type thrust measuring device for a micronewton-class electric thruster provided by at least one embodiment of the present disclosure, a positioning hole is provided on the vertical beam, the top end of the intermediate pivot passes through the positioning hole, a clamp is detachably provided on the vertical beam, and the vertical beam and the intermediate pivot are detachably connected via the clamp.
[0022] In the balance-type thrust measurement device for a micronewton-level electric thruster provided by at least one embodiment of the present disclosure, the bottom end of the intermediate pivot is detachably connected to the vertical beam or the mounting base.
[0023] In the balance-type thrust measurement device for a micronewton-level electric thruster provided in at least one embodiment of the present disclosure, the balance adjustment device includes a connecting arm and a measured arm.
[0024] The connecting arm and the measured arm are both configured to be perpendicular to the winding swing arm, and the connecting arm and the measured arm are both fixedly connected to the winding swing arm.
[0025] The connecting arm is perpendicular to the measured arm, and the connecting arm and the measured arm are distributed in a T shape.
[0026] Both ends of the connecting arm are provided with magnetic flux line cutting parts, and the magnetic flux line cutting parts are arranged in the slot body.
[0027] The measured arm is located at one side of the sensor component, and there is a gap between the measured arm and the sensor component.
[0028] The beneficial effects of the utility model are as follows: compared with other micro-newton-level thrust racks, the utility model has the advantages of high measurement sensitivity and fast response speed. In order to reduce the influence of the stress and strain of the thruster cable on the thrust measurement, the airway clamp is used to clamp the transfer air pipe, and the influence of the air pipe stress and strain on the thrust measurement is reduced as much as possible by winding the air pipe and arranging it along the winding swing arm.
[0029] The cable enters the interior of the intermediate pivot through the cable inlet and passes through the cable accommodating channel to pass out of the intermediate pivot, thereby reducing the impact of the temperature increase of the thruster on the cable.
[0030] The damping generating device adopts a permanent magnet configuration, which reduces the extra power consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0032] Figure 1 The utility model is a structural schematic diagram of a balance thrust measuring device for a micronewton-level electric thruster.
[0033] Figure 2 The utility model is a partial structural schematic diagram of a balance type thrust measuring device for a micronewton-level electric thruster.
[0034] Figure 3 Schematic diagram of the connection between the vertical beam and the intermediate pivot.
[0035] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0036] Figure 5 Schematic diagram of the location of the positioning holes.
[0037] Figure 6 Schematic diagram of the component distribution of the damping generating device, the balance adjusting device and the sensor assembly.
[0038] Figure 7 The utility model is a partial structural schematic diagram of a balance type thrust measuring device for a micronewton-level electric thruster.
[0039] In the figure:
[0040] 10. Installation base; 11. Vertical beam; 111. Positioning hole; 112. Clamp;
[0041] 20. Middle pivot; 21. Cable winding swing arm; 22. Cable receiving channel; 23. Cable inlet;
[0042] 30. Damping generating device; 31. First permanent magnet; 32. Second permanent magnet; 33. Slot body;
[0043] 40. Sensor assembly;
[0044] 50. Balance adjustment device; 51. Connecting arm; 52. Measured arm; 511. Magnetic flux line cutting part;
[0045] 60.Thruster fixing bracket;
[0046] 70. Tracheal fixing clamp;
[0047] 80. Limiting device;
[0048] 90. Calibration device; 91. Control component; 92. Moving component. DETAILED DESCRIPTION
[0049] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.
[0050] Example
[0051] like Figures 1 to 7 As shown, a balance-type thrust measuring device for a micronewton-level electric thruster includes a mounting base 10, an intermediate pivot 20, a damping generating device 30, a sensor assembly 40, a balance adjusting device 50, a thruster fixing bracket 60 and an air pipe fixing clamp 70.
[0052] Specifically, the sensor assembly 40 and the damping generating device 30 are both bolted to the mounting base 10. The mounting base 10 is provided with a vertical beam 11, the intermediate pivot 20 is configured to be detachably connected to the vertical beam 11, and the air pipe fixing clamp 70 is disposed on the vertical beam 11.
[0053] Specifically, the intermediate pivot 20 has a winding swing arm 21, and the thruster fixing bracket 60 and the balance adjustment device 50 are respectively arranged at both ends of the winding swing arm 21. The air pipe and the cable can be arranged along the winding swing arm 21, so as to reduce the influence of the air pipe stress and strain on the thrust measurement.
[0054] Furthermore, the intermediate pivot 20 is fixedly connected to the winding swing arm 21 .
[0055] Specifically, the damping generating device 30 is used to provide damping for the balance adjusting device 50 .
[0056] Specifically, the sensor assembly 40 is located at one side of the balance adjustment device 50 , and the sensor assembly 40 is used to detect the displacement of the balance adjustment device 50 .
[0057] Exemplarily, the sensor assembly 40 includes a connection seat and a capacitive displacement sensor, and the capacitive displacement sensor and the mounting base 10 are both bolted to the connection seat.
[0058] In this embodiment, the intermediate pivot 20 has a cable accommodating channel 22 inside, and the intermediate pivot 20 is provided with a wire inlet 23, the wire inlet 23 is connected with the cable accommodating channel 22, the cable enters the intermediate pivot through the wire inlet, and passes through the cable accommodating channel out of the intermediate pivot, most of the cable is located inside the intermediate pivot, so as to reduce the impact of the temperature rise of the thruster on the cable.
[0059] In this embodiment, the balance thrust measuring device for the micro-newton electric thruster further includes a limit device 80, which is used to block the winding swing arm 21 to prevent the winding swing arm 21 from excessive rotation. The limit device 80 is fixedly configured on the mounting base 10; the limit device 80 is located between the intermediate pivot 20 and the thruster fixing bracket 60.
[0060] In this embodiment, the balance thrust measuring device for the micronewton electric thruster further includes a calibration device 90. The calibration device 90 includes a reference component 91 and a movable component 92, wherein the movable component 92 is disposed below the thruster fixed bracket 60, and the movable component 92 is fixedly connected to the winding swing arm 21; and the reference component 91 is fixedly connected to the mounting base 10.
[0061] Specifically, the movable component 92 is arranged in a C shape, and the contrast component 91 has an insertion portion, which is inserted into the movable component 92 , and a gap is provided between the movable component 92 and the contrast component 91 .
[0062] In this embodiment, the damping generating device 30 comprises a first permanent magnet 31 and a second permanent magnet 32 , and both the first permanent magnet 31 and the second permanent magnet 32 are provided with a slot 33 .
[0063] Furthermore, one end of the balance adjustment device 50 is inserted into the slot 33 of the first permanent magnet 31, and the other end of the balance adjustment device 50 is inserted into the slot 33 of the second permanent magnet 32. Both ends of the balance adjustment device 50 are configured to generate damping by cutting the magnetic flux lines when the slot moves.
[0064] In this embodiment, a positioning hole 111 is provided on the vertical beam 11 , and the top end of the intermediate pivot 20 passes through the positioning hole 111 . A clamp 112 is detachably provided on the vertical beam 11 , and the vertical beam 11 and the intermediate pivot 20 are detachably connected via the clamp 112 .
[0065] In this embodiment, the bottom end of the intermediate pivot 20 is detachably connected to the vertical beam 11 .
[0066] In this embodiment, the balance adjustment device 50 includes a connecting arm 51 and a measured arm 52 .
[0067] Furthermore, the connecting arm 51 and the measured arm 52 are both configured to be perpendicular to the winding swing arm 21 , and the connecting arm 51 and the measured arm 52 are both fixedly connected to the winding swing arm 21 .
[0068] Furthermore, the connecting arm 51 is perpendicular to the measured arm 52, and the connecting arm 51 and the measured arm 52 are arranged in a T-shape. Both ends of the connecting arm 51 are provided with a magnetic flux line cutting portion 511, and the magnetic flux line cutting portion 511 is arranged in the slot body 33. The measured arm 52 is located at one side of the sensor assembly 40, and there is a gap between the measured arm 52 and the sensor assembly 40.
[0069] The following will disclose the use of the balance-type thrust measurement device for a micronewton-level electric thruster in the embodiment, and further illustrate its working principle.
[0070] Before the test begins, balance adjustment and static stress release operations must be performed. During this process, the limit device needs to be fixed and mechanically locked with the mounting base through screws and nuts.
[0071] When adjusting the balance, first loosen the clamping device connecting the intermediate pivot and the vertical beam, so that the intermediate pivot can move on the vertical beam of the mounting base. After installing the thruster to the thruster fixing bracket, assemble the appropriate counterweight into the balance adjustment device.
[0072] Adjust the middle pivot so that it can remain relatively stable on the vertical beam of the mounting base and not lean against any side of the vertical beam. After the balance adjustment is completed, slightly rotate the middle pivot so that the indicator line of the calibration device is within the marked range to complete the pre-work. At this time, re-clamp the middle pivot and the vertical beam to complete the balance adjustment and calibration work before measurement.
[0073] After the adjustment is completed, the equipment is moved as a whole into the vacuum chamber, the wiring work is completed, and it is left to stand for more than 12 hours to release the stress and strain of the equipment itself generated during the installation and moving process.
[0074] During the measurement process, the tiny thrust generated by the thruster will cause the swing arm of the intermediate pivot to rotate slightly. At this time, the displacement sensor installed on the sensor assembly will record this displacement process. By implementing equipment calibration and corresponding conversion procedures, the measured thrust of the thruster can be obtained from the displacement.
[0075] Although the embodiments of the present application have been shown and described above, the scope of protection of the present invention is not limited thereto, and any changes or substitutions that are not conceivable through creative work should be included in the scope of protection of the present invention; unless explicitly stated, any element, action or instruction used in this document should not be interpreted as critical or necessary.
Claims
1. A balance thrust measuring device for a micro-newton electric thruster, characterized in that: include: Install the base, intermediate pivot, damping generating device, sensor assembly, balance adjustment device, thruster fixing bracket and air pipe fixing clamp; The sensor assembly and the damping generating device are both assembled on a mounting base; A vertical beam is arranged on the mounting base, the intermediate pivot is configured to be detachably connected to the vertical beam, and the air pipe fixing clamp is arranged on the vertical beam; The intermediate pivot has a winding swing arm, and the thruster fixing bracket and the balance adjustment device are respectively arranged at two ends of the winding swing arm; The damping generating device is used to provide damping for the balance adjusting device; The sensor assembly is located at one side of the balance adjustment device, and the sensor assembly is used to detect the displacement of the balance adjustment device; The middle pivot has a cable accommodating channel inside, and the middle pivot is provided with a wire inlet, which is communicated with the cable accommodating channel.
2. A balance thrust measuring device for a micronewton-level electric thruster according to claim 1, characterized in that: Also includes: A limiting device, used to block the winding swing arm to prevent the winding swing arm from over-rotating; Wherein, the limiting device is fixedly arranged on the mounting base; The limiting device is located between the intermediate pivot and the thruster fixing bracket.
3. A balance thrust measuring device for a micronewton-level electric thruster according to claim 1, characterized in that: Also included: a calibration device; Wherein, the calibration device comprises a reference component and a movable component, the movable component is arranged below the thruster fixing bracket, and the movable component is fixedly connected to the winding swing arm; The contrast component is fixedly connected to the mounting base.
4. A balance thrust measuring device for a micronewton-level electric thruster according to claim 2, characterized in that: The damping generating device comprises a first permanent magnet and a second permanent magnet, wherein the first permanent magnet and the second permanent magnet are both provided with a slot body; One end of the balance adjustment device is inserted into the slot of the first permanent magnet, and the other end of the balance adjustment device is inserted into the slot of the second permanent magnet. Both ends of the balance adjustment device are configured to generate damping when the slot moves by cutting the magnetic flux lines.
5. The balance thrust measuring device for a micronewton-level electric thruster according to claim 1, characterized in that: The vertical beam is provided with a positioning hole, the top end of the intermediate pivot passes through the positioning hole, the vertical beam is detachably provided with a clamp, and the vertical beam and the intermediate pivot are detachably connected through the clamp.
6. A balance thrust measuring device for a micronewton-level electric thruster according to claim 5, characterized in that: The bottom end of the intermediate pivot is detachably connected to the vertical beam or the mounting base.
7. A balance thrust measuring device for a micronewton-level electric thruster according to claim 4, characterized in that: The balance adjustment device comprises a connecting arm and a measured arm; The connecting arm and the measured arm are both configured to be perpendicular to the winding swing arm, and the connecting arm and the measured arm are both fixedly connected to the winding swing arm; The connecting arm is perpendicular to the measured arm, and the connecting arm and the measured arm are distributed in a T shape; Both ends of the connecting arm are provided with a magnetic flux line cutting portion, and the magnetic flux line cutting portion is arranged in the slot body; The measured arm is located at one side of the sensor component, and there is a gap between the measured arm and the sensor component.