CN212845870U

CN212845870U - Quartz flexible accelerometer magnetic measurement tool

Info

Publication number: CN212845870U
Application number: CN202021722529.1U
Authority: CN
Inventors: 邓云; 赵娟; 许图
Original assignee: Chongqing Tianyang Topology Technology Co ltd
Current assignee: Chongqing Tianyang Topology Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-03-30
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a quartzy flexible accelerometer surveys magnetism frock, its characterized in that: including bottom plate and the pedestal of setting on the bottom plate, be the mount table on the pedestal, the stand is installed to mount table one side, the cover is equipped with the cover on the stand, the cover top of filling up is connected with the crossbeam, vertically be provided with the survey magnetic probe that stretches out downwards on the crossbeam still be provided with the lift axle subassembly on the mount table, the last casing subassembly that installs the quartzy flexible accelerometer of the examination of awaiting measuring of lift axle subassembly. Adopt the utility model discloses a quartzy flexible accelerometer surveys magnetism frock can improve detection efficiency and accuracy.

Description

Quartz flexible accelerometer magnetic measurement tool

Technical Field

The utility model relates to a survey magnetism frock especially relates to quartzy flexible accelerometer's survey magnetism frock.

Background

Quartz flexible accelerometers are currently widely used in various fields of civil and military use, such as aerospace high-precision navigation systems, inertial navigation, navigation positioning, flight attitude control or geological exploration strapdown systems. The device mainly comprises an upper torquer, a lower torquer, a pendulum assembly and a servo loop. The coil is fixedly connected with the quartz swinging piece through a gluing method, and the coil framework and the swinging piece form a swinging assembly, so that the function of detecting the mass is realized, and the swinging assembly is used for sensing the external input acceleration. The torquer consists of a yoke, magnetic steel, magnetic pole pieces and a compensation ring, wherein the magnetic steel is made of a permanent magnet made of a proper permanent magnet material to establish a magnetic field, the yoke and the magnetic pole pieces enable the magnetic field to form a magnetic loop along the yoke, the compensation ring compensates magnetic flux leakage, the upper torquer and the lower torquer adopt a homopolar opposite-jacking structure to realize a push-pull working mode, the upper torquer and the lower torquer and the swing piece are fixed into a whole through a belly band, and when acceleration is input from the outside, the swing piece leaves a balance position under the action. At the moment, the capacitance value of the differential capacitor formed by the upper surface and the lower surface of the swing sheet and the end surfaces of the upper torquer and the lower torquer is changed, and the electric signal is output to a servo loop through the wiring terminal. The amplified current signal is output to the coil, and the balance position of the pendulous reed is restored by the ampere force of the electrified lead in the magnetic field through the push-pull action. In the case of a small pendulum deflection angle, the current is approximately linear with the input acceleration. The current is detected to obtain the magnitude of the input acceleration.

In the production of the quartz flexible accelerometer, a magnet and magnetic steel arranged in an acceleration shell assembly need to be measured. The existing magnetism measuring mode is that a manual handheld magnetism measuring probe detects the magnetism measuring probe, and the shell needs to be rotated in the detecting process, because the magnet on the shell needs to be detected at multiple points. The manual detection mode has large measurement error, inaccuracy and low efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a carry out the frock of surveying magnetism to quartzy flexible accelerometer high-efficiently.

In order to achieve the above object, the present invention is realized as follows: quartz flexible accelerometer surveys magnetism frock, its characterized in that: including bottom plate and the pedestal of setting on the bottom plate, be the mount table on the pedestal, the stand is installed to mount table one side, the cover is equipped with the cover on the stand, the cover top of filling up is connected with the crossbeam, vertically be provided with the survey magnetic probe that stretches out downwards on the crossbeam still be provided with the lift axle subassembly on the mount table, the last casing subassembly that installs the quartzy flexible accelerometer of the examination of awaiting measuring of lift axle subassembly. By adopting the mode, the shell assembly of the quartz flexible accelerometer is arranged on the lifting shaft assembly, the height of the shell assembly is adjusted, and the shell assembly can be detected by the magnetism measuring probe extending from the cross beam.

For further realizing the multi-point detection, the lifting shaft assembly comprises a lifting shaft, a bearing seat is fixedly mounted on the lifting shaft, the outer wall of a shell seat for mounting the shell assembly is mounted in the bearing seat through a bearing, and the center of the shell seat is mounted on the lifting shaft through a positioning shaft. The casing seat is installed on the bearing frame through the bearing, can realize rotating, can realize casing assembly's circumference multiple spot during rotation and detect.

In order to further realize axial lifting, a mounting cavity is arranged in the base body, a lifting shaft of the lifting shaft assembly extends into the mounting cavity from the mounting table, axial teeth are arranged on the outer wall of the lifting shaft, a gear assembly is further arranged in the mounting cavity, and a gear meshed with the teeth is arranged on the gear assembly and is provided with a driving piece used for driving the gear assembly to rotate.

In order to further realize axial lifting, the gear assembly comprises a gear shaft which is perpendicular to the lifting shaft, two ends of the gear shaft are supported on the base body through bearings, the gear is fixedly sleeved on the gear shaft, and one end of the gear shaft extends out of the base body and is connected with the driving piece.

Preferably, the driving part comprises a sector wrench fixedly sleeved on the gear shaft, an arc-shaped groove is formed in the sector wrench, and a locking screw penetrates through the arc-shaped groove to be locked on the base body.

In order to further install the cross beam, the upper portion of the upright post is a small-diameter section, the upper portion of the small-diameter section is provided with external threads, the cushion cover is sleeved into the small-diameter section of the upright post, the cross beam is sleeved into the small-diameter section of the upright post and positioned on the cushion cover, and the axial positioning of the cross beam is realized through the threaded connection of the first nut and the external threads on the upper portion of the small-diameter section.

In order to further improve the installation reliability, a screw hole is formed in the rear side wall of the cross beam, a screw penetrates through the screw hole and abuts against the small diameter section of the stand column, and a second nut is connected to the screw in a threaded mode.

For further realizing the compressing tightly of crossbeam the top surface of crossbeam is provided with hold-down mechanism, hold-down mechanism includes the clamp plate, the top surface of crossbeam is provided with slottedly towards stand one side, the clamp plate is located the inslot just the clamp plate with be provided with the steel ball between the groove, first nut with the clamp plate top surface offsets, just still be provided with the screw on the clamp plate top surface, threaded connection has a top fastening screw in the screw, the afterbody of top fastening screw for circular and with the steel ball offsets.

In order to further install the magnetism measuring probe, a through hole is formed in the cross beam, a magnetism measuring probe seat is fixedly installed in the through hole, and the magnetism measuring probe penetrates through the magnetism measuring probe seat and is in contact with the shell assembly.

Preferably, the shell assembly comprises an upper yoke assembly and a lower yoke assembly, and a positioning block for positioning the shell assembly is arranged on one side of the upper yoke assembly and the lower yoke assembly.

Has the advantages that:

the utility model discloses a quartzy flexible accelerometer surveys magnetism frock installs the epaxial lift with the casing subassembly of quartzy flexible accelerometer to fix a position through the locating piece. The lifting shaft is arranged on the base body, the lifting shaft is lifted and lowered through the matching of the gear and the rack, and the magnetic flux of the magnetic steel of the upper yoke assembly and the lower yoke assembly of the shell assembly can be conveniently, quickly and accurately detected through the magnetic measuring probe extending downwards on the cross beam. The efficiency and the accuracy of detection are ensured.

Drawings

FIG. 1 is a block diagram of an embodiment of a lift shaft assembly;

FIG. 2 is a side view of a magnetic measurement tool of a quartz flexure accelerometer in an embodiment;

FIG. 3 is a sectional view A-A of FIG. 2;

fig. 4 is a sectional view B-B of fig. 2.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or replacements within the basic spirit of the embodiments still fall within the scope of the present invention claimed in the claims.

Example (b): as shown in fig. 1-4, the magnetic measurement tool for the quartz flexible accelerometer comprises a bottom plate 1 and a seat body 2 arranged on the bottom plate, wherein the seat body is locked on the bottom plate through a screw 3, an elastic pad 4 and a flat pad 5. Be the mount table on the pedestal, stand 9 is installed to mount table one side, the stand lower part is provided with mounting flange, mounting flange passes through screw 6, bullet pad 7 and flat 8 locks of filling up on the mount table of pedestal. The cover is equipped with the cover 10 on the stand, the cover top is connected with crossbeam 13, vertically be provided with the survey magnetic probe 21 that stretches out downwards on the crossbeam still be provided with lifting shaft subassembly 28 on the mount table, the last casing subassembly of the quartz flexible accelerometer that installs the examination of awaiting measuring of lifting shaft subassembly, casing subassembly includes yoke subassembly 26 from top to bottom.

In this embodiment, the lifting shaft assembly includes a lifting shaft 41, a bearing seat 42 is fixedly mounted on the lifting shaft, and the inner bottom of the bearing seat is locked to the lifting shaft through a screw 43, an elastic pad 44 and a flat pad 45. The outer wall of a housing seat 47 for mounting the housing assembly is mounted in the bearing seat through a bearing 46 and positioned by a positioning block 27, and the center of the housing seat is mounted on the lifting shaft through a positioning shaft 48. The housing seat can rotate through a bearing. Specifically, a notch corresponding to the positioning block 27 is formed in the housing seat, and when the housing assembly is mounted, the positioning block is mounted in the notch to position the housing assembly.

And the base body is internally provided with an installation cavity, a lifting shaft of the lifting shaft assembly extends into the installation cavity from the installation platform, and the outer wall of the lifting shaft is provided with axial teeth. Still be provided with the gear assembly in the installation cavity, the gear assembly include with the perpendicular gear shaft 35 that sets up of lift axle, the gear shaft both ends are passed through packing ring 37 and are supported with cake nut 38 on the pedestal, gear 34 passes through the fixed cover of screw 36 and establishes on gear shaft 35, gear shaft one end is stretched out the pedestal and is connected with the driving piece. The driving member comprises a sector wrench 30 fixedly sleeved on the gear shaft, and the sector wrench is locked to the end surface of the gear shaft through a screw 31. The sector spanner is provided with an arc-shaped groove, and is locked on the seat body through a locking screw 29 penetrating through the arc-shaped groove and a gasket 39. The arc-shaped screw is also provided with a screw 32 and a nut 33 which are perpendicular to the arc-shaped screw for limiting the wrench.

In another embodiment of this embodiment, the upper portion of the pillar 9 is a small-diameter section, the diameter of the upper portion is smaller than that of the lower portion, and the upper portion of the small-diameter section has an external thread. The cushion cover 10 is sleeved in the small-diameter section of the upright post, and the outer diameter of the cushion cover is consistent with that of the lower section of the upright post. The cross beam 13 is sleeved into the small-diameter section of the upright column and is positioned on the cushion cover, and the axial positioning of the cross beam is realized through the threaded connection of the flat cushion 14, the first nut 15 and the external thread on the upper part of the small-diameter section.

In addition, the rear side wall of the cross beam is provided with a screw hole, a screw 11 penetrates through the screw hole and abuts against the small diameter section of the upright column, and a second nut 12 is further screwed on the screw.

As another embodiment of the present embodiment, a pressing mechanism is disposed on the top surface of the cross beam. The pressing mechanism comprises a pressing plate 16, a groove is formed in one side, facing the stand column, of the top surface of the cross beam, and the groove is communicated with a through hole formed in the cross beam and used for being sleeved on the stand column. The flanges projecting from the two ends of the pressure plate are locked to the cross beam by means of screws 17, elastic pads 18 and flat pads 19. The base plate of one side of the pressing plate, which faces the through hole of the cross beam, is located in the groove, the steel ball 40 is arranged between the base plate of the pressing plate and the groove, and the first nut is downwards screwed and abuts against the top surface of the base plate to lock the pressing plate and the cross beam. And the top surface of the pressing plate is also provided with a screw hole, a jacking screw 20 is screwed in the screw hole, and the tail part of the jacking screw is circular and is abutted against the steel ball.

In addition, a through hole is formed in one side, far away from the upright post, of the cross beam, a magnetic measurement probe seat 25 is fixedly installed in the through hole, the outer edge of the magnetic measurement probe seat is a connecting ring-shaped plate, and the connecting ring-shaped plate is locked to the cross beam through a screw 22, an elastic cushion 23 and a flat cushion 24. And a through hole is formed in the middle of the magnetic measurement probe seat, and the magnetic measurement probe, namely a teslameter penetrates through the through hole of the magnetic measurement probe seat to be in contact with the shell assembly.

By adopting the magnetic measurement tool for the quartz flexible accelerometer, during detection, a shell component of the quartz flexible accelerometer to be detected is arranged on the shell seat of the lifting shaft component and is positioned through the positioning block. The height of the lifting shaft can be adjusted through a spanner. And the upper yoke iron assembly and the lower yoke iron assembly of the shell assembly are detected through a magnetic measuring probe which is arranged on the cross beam and extends downwards. Because the shell seat is connected with the bearing seat on the lifting shaft through the bearing, the shell seat can be manually rotated during detection, and the circumferential multi-point detection of the upper yoke assembly and the lower yoke assembly of the shell assembly by the magnetic detection probe is realized. The magnetic flux of the upper and lower yoke assembly magnetic steel is conveniently, quickly and accurately detected, and the detection efficiency and accuracy are ensured.

Claims

1. Quartz flexible accelerometer surveys magnetism frock, its characterized in that: including bottom plate and the pedestal of setting on the bottom plate, be the mount table on the pedestal, the stand is installed to mount table one side, the cover is equipped with the cover on the stand, the cover top of filling up is connected with the crossbeam, vertically be provided with the survey magnetic probe that stretches out downwards on the crossbeam still be provided with the lift axle subassembly on the mount table, the last casing subassembly that installs the quartzy flexible accelerometer of the examination of awaiting measuring of lift axle subassembly.

2. The quartz flexure accelerometer magnetic measurement tool of claim 1, characterized in that: the lifting shaft assembly comprises a lifting shaft, a bearing seat is fixedly mounted on the lifting shaft, the outer wall of a shell seat for mounting the shell assembly is mounted in the bearing seat through a bearing, and the center of the shell seat is mounted on the lifting shaft through a positioning shaft.

3. The quartz flexure accelerometer magnetic measurement tool of claim 2, characterized in that: the pedestal is characterized in that a mounting cavity is formed in the pedestal, a lifting shaft of the lifting shaft assembly extends into the mounting cavity from the mounting table, axial teeth are arranged on the outer wall of the lifting shaft, a gear assembly is further arranged in the mounting cavity, and a gear meshed with the teeth is arranged outside the pedestal and is used for driving a driving piece for driving the gear assembly to rotate.

4. The quartz flexure accelerometer magnetic measurement tool of claim 3, characterized in that: the gear assembly includes with the gear shaft that the lift axle set up perpendicularly, the gear shaft both ends are passed through the bearing and are supported on the pedestal, the fixed cover of gear is established on the gear shaft, gear shaft one end is stretched out the pedestal and with driving piece is connected.

5. The quartz flexure accelerometer magnetic measurement tool of claim 4, characterized in that: the driving piece comprises a sector wrench fixedly sleeved on the gear shaft, an arc-shaped groove is formed in the sector wrench, and a locking screw penetrates through the arc-shaped groove to be locked on the base body.

6. The quartz flexure accelerometer magnetic measurement tool of claim 1, 2, 3, 4 or 5, wherein: the upper portion of the upright post is a small-diameter section, the upper portion of the small-diameter section is provided with external threads, the cushion cover is sleeved into the small-diameter section of the upright post, the cross beam is sleeved into the small-diameter section of the upright post and located on the cushion cover, and the axial positioning of the cross beam is achieved through the threaded connection of a first nut and the external threads on the upper portion of the small-diameter section.

7. The quartz flexure accelerometer magnetic measurement tool of claim 6, characterized in that: the rear side wall of the cross beam is provided with a screw hole, the screw hole penetrates through a screw and abuts against the small diameter section of the upright post, and a second nut is further screwed on the screw.

8. The quartz flexure accelerometer magnetic measurement tool of claim 7, characterized in that: the top surface of crossbeam is provided with hold-down mechanism, hold-down mechanism includes the clamp plate, the top surface of crossbeam is provided with slottedly towards stand one side, the clamp plate is located the inslot just the clamp plate with be provided with the steel ball between the groove, first nut with the clamp plate top surface offsets, just still be provided with the screw on the clamp plate top surface, threaded connection has a top fastening screw in the screw, the afterbody of top fastening screw be circular and with the steel ball offsets.

9. The quartz flexure accelerometer magnetic measurement tool of claim 8, wherein: the cross beam is provided with a through hole, a magnetism measuring probe seat is fixedly installed in the through hole, and the magnetism measuring probe penetrates through the magnetism measuring probe seat to be in contact with the shell assembly.

10. The quartz flexure accelerometer magnetic measurement tool of claim 9, wherein: the shell assembly comprises an upper yoke assembly and a lower yoke assembly, and a positioning block for positioning the shell assembly is arranged on one side of the upper yoke assembly and the lower yoke assembly.