CN209525470U - A kind of absolute gravimeter - Google Patents
A kind of absolute gravimeter Download PDFInfo
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- CN209525470U CN209525470U CN201920242329.7U CN201920242329U CN209525470U CN 209525470 U CN209525470 U CN 209525470U CN 201920242329 U CN201920242329 U CN 201920242329U CN 209525470 U CN209525470 U CN 209525470U
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Abstract
The utility model discloses a kind of absolute gravimeters, belong to absolute gravimeter technical field, it passes through corresponding upper unit and bottom deck assembly and leg assembly is arranged in lower unit, in the lower section of upper plate, multiple first legs and multiple second supporting legs are set, in the lower section of lower plate, multiple third supporting legs are set, by the mutual cooperation of corresponding supporting leg, it can be achieved that complete machine leveling and measurement of the absolute gravimeter under static measurement environment, dynamic measurement environment.The absolute gravimeter of the utility model, its structure is simple, control is easy, it can effectively realize the complete machine transport and complete machine leveling of absolute gravimeter, it realizes the measurement under the high-acruracy survey and dynamic measurement environment under static measurement environment, greatly improves the efficiency of absolute gravimeter complete machine leveling, and effectively expand the application range of absolute gravimeter, realize the complete machine leveling under dynamic measurement environment and DATA REASONING, with good application prospect and application value.
Description
Technical Field
The utility model belongs to the technical field of absolute gravimeter, concretely relates to absolute gravimeter.
Background
The gravity field is a geophysical basic field reflecting the internal material structure and the change of the internal material structure of the earth, and high-precision absolute gravity observation data are the basis of the fields of geoscience research, resource exploration, earthquake monitoring and forecasting and the like and are indispensable strategic data in the fields of submarine gravity-assisted navigation, missile guidance and the like.
The absolute gravimeter is a precise instrument for directly measuring the gravity acceleration value, and is one of important means for observing the gravity field. Generally, the main structure of the absolute gravimeter is arranged up and down, and mainly includes an upper unit and a lower unit, and specifically includes a vacuum free fall system, a laser interference system, a vibration isolation system, a signal acquisition and instrument control system, a data processing software system, and the like.
At present, a common absolute gravimeter is generally provided with three support legs corresponding to an upper unit and a lower unit respectively, the upper unit is supported by the three support legs with end portions abutting against the ground, the lower unit is supported by the other three support legs with end portions abutting against the ground, and leveling and measurement of the absolute gravimeter under static measurement environments such as the ground can be realized through corresponding adjustment of six support legs. However, with the continuous development of gravity observation technology, the measurement requirements under dynamic measurement environments similar to vehicle-mounted and ship-mounted environments are more and more, and under these special environments, the working environment of the absolute gravimeter is not a relatively static ground, which is difficult for the conventional absolute gravimeter to automatically and quickly level the whole machine, so that the normal interference of the laser interferometer cannot be effectively ensured, the accuracy of the measurement result is affected, and even gravity measurement cannot be performed, and the application limitation is large.
SUMMERY OF THE UTILITY MODEL
The utility model provides an absolute gravimeter, wherein sets up bottom plate subassembly and landing leg subassembly through corresponding upper portion unit and lower part unit, can effectively realize absolute gravimeter complete machine leveling and corresponding measurement under static measurement environment and dynamic measurement environment, widen absolute gravimeter's application scope greatly in defect more than prior art or improving in the demand one kind or multiple.
In order to achieve the above object, the present invention provides an absolute gravimeter, which includes an upper unit and a lower unit vertically arranged at an interval, and is characterized by further including a bottom plate assembly and a leg assembly disposed corresponding to the bottom plate assembly; wherein,
the bottom plate assembly comprises an upper bottom plate and a lower bottom plate which is oppositely arranged below the upper bottom plate, the upper unit is correspondingly arranged on the top surface of the upper bottom plate, and the lower unit is correspondingly arranged on the top surface of the lower bottom plate; and is
The supporting leg assembly comprises at least three first supporting legs arranged on the bottom surface of the upper base plate at intervals, at least three second supporting legs arranged between the bottom surface of the upper base plate and the top surface of the lower base plate at intervals, and at least three third supporting legs arranged on the bottom surface of the lower base plate at intervals; wherein,
the first supporting leg is arranged between the upper base plate and the working table of the absolute gravimeter, the top of the first supporting leg is correspondingly connected with the bottom surface of the upper base plate, the first supporting leg can correspondingly stretch along the length direction, and the bottom of the first supporting leg can be abutted against or far away from the working table; one end of the second supporting leg is a connecting end correspondingly connected with the bottom surface of the upper bottom plate or the top surface of the lower bottom plate, the other end of the second supporting leg is a telescopic end capable of correspondingly extending and retracting along the length direction, and the telescopic end can correspondingly abut against the corresponding end surface of the bottom plate and is fixedly connected with the bottom plate so as to realize the mutual independence or mutual fixed connection of the upper bottom plate and the lower bottom plate; the top of third landing leg is corresponding to be connected on the bottom surface of lower plate, its bottom can correspond the butt table surface is in order to support the lower plate, just the third landing leg can be followed length direction and correspond flexible, in order to be used for realizing the leveling of lower plate.
As a further improvement of the present invention, the first leg and the second leg, and the third leg are three respectively disposed at intervals.
As a further improvement of the present invention, the first leg and the second leg, and the third leg are vertically disposed respectively.
As a further improvement of the utility model, first leg include first branch and coaxial set up in the lower margin of first branch bottom, and set up in first branch with first lift portion between the lower margin, first lift portion corresponds with the first connecting rod of telescopic and connects the bottom of first branch and/or the bottom of lower margin.
As a further improvement, the second landing leg includes the second branch and the second lift portion of coaxial setting, second branch deviates from the one end of second lift portion does the link, second lift portion corresponds with telescopic second connecting rod and connects second branch passes through then the correspondence of second connecting rod is flexible, can realize the butt or the separation of second lift portion and corresponding bottom plate.
As a further improvement of the present invention, the third support leg includes a butt the supporting portion of the working table is connected with the corresponding portion of lifting the bottom plate bottom surface, the third portion of lifting is connected with the telescopic third connecting rod corresponding to the supporting portion and/or the bottom plate.
As a further improvement of the present invention, the first legs and the second legs are alternately arranged along the hoop, and each of the first legs are arranged along the hoop at equal intervals, and each of the second legs are arranged along the hoop at equal intervals.
As a further improvement, the utility model respectively corresponds first landing leg the second landing leg with the third landing leg is provided with control motor, and each landing leg can the realization is corresponding flexible under control motor's the control.
As a further improvement of the present invention, the upper plate and the lower plate are respectively provided with a protrusion at the periphery thereof, so that the end of the second leg is connected to the end of the protrusion, and the second leg is kept away from the lower unit.
As a further improvement, the utility model discloses a correspond the recess of certain degree of depth is seted up to the flexible end of second landing leg on the terminal surface that corresponds the bottom plate, flexible end can correspond in this recess of embedding.
As a further improvement of the utility model, the telescopic end can be fixedly connected with the end face of the corresponding bottom plate through magnetic attraction, a buckle or a lock pin.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
(1) the utility model discloses an absolute gravimeter, it corresponds upper portion unit and lower part unit and sets up bottom plate subassembly and landing leg subassembly, corresponds to below the upper plate and sets up a plurality of first landing legs and a plurality of second landing legs, corresponds to below the lower plate and sets up a plurality of third landing legs, through the corresponding connection of each second landing leg, can realize the link joint of upper plate and lower plate, realize absolute gravimeter's complete machine transportation and complete machine leveling; if the measurement environment of the absolute gravimeter is a dynamic measurement environment, absolute gravity measurement can be directly carried out after the whole machine is leveled; if the measurement environment of the absolute gravimeter is a static measurement environment, the fixed connection of the second support legs can be removed through corresponding control after the leveling of the whole machine, the first support legs and the third support legs are correspondingly matched to work, and then the accurate leveling of the upper unit and the lower unit of the absolute gravimeter in the static measurement environment is respectively realized, so that the accurate measurement in the static measurement environment is realized; through the arrangement, the measurement of the absolute gravimeter in a dynamic measurement environment is effectively realized, the application requirement of absolute gravity observation in the dynamic measurement environment is met, and the application range of the absolute gravimeter is expanded;
(2) the utility model discloses an absolute gravimeter, it is through corresponding the lift portion that sets up on first landing leg, second landing leg, third landing leg to correspond lift portion and set up the telescopic connecting rod, with the corresponding flexible of connecting rod, realized the corresponding control of each landing leg, control process is simple, and control accuracy is high, and through setting up the control motor respectively corresponding each landing leg, effectively realized the electric control of each landing leg, further promoted the precision of control, regulation, ensured the accuracy of relevant gravity data measurement;
(3) the utility model discloses an absolute gravimeter, it is through setting up the lower margin in first landing leg bottom, with first branch and lower margin of first lifting part corresponding connection, correspond butt table surface by the lower margin, realize the stable support of first landing leg, guarantee the accurate leveling of upper portion unit under the static measurement environment, promote the accuracy of complete machine leveling under the static measurement environment, reduce the error of measuring, promote the accuracy of data measurement;
(4) the utility model discloses an absolute gravimeter, it is through setting up the recess corresponding the second landing leg telescopic end on the terminal surface that corresponds the bottom plate for the tip of second landing leg can correspond imbed in the recess, has realized the quick location of second landing leg, has promoted the stability when second landing leg connects two bottom plates, has promoted absolute gravimeter's control efficiency;
(5) the utility model discloses an absolute gravimeter, its simple structure sets up portably, and the leveling control process under static measurement environment and the dynamic measurement environment is simple, and the efficiency and the accuracy of complete machine leveling are high, can effectively enlarge absolute gravimeter's range of application, realize complete machine leveling and data measurement under the dynamic measurement environment, have better application prospect and popularization and application and worth.
Drawings
Fig. 1 is a schematic perspective view of an absolute gravimeter according to an embodiment of the present invention at a first viewing angle;
fig. 2 is a schematic perspective view of an absolute gravimeter according to an embodiment of the present invention at a second viewing angle;
FIG. 3 is an elevation view of the overall structure of an absolute gravimeter according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a first support rod of an absolute gravimeter according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a second leg of an absolute gravimeter according to an embodiment of the present invention;
fig. 6 is a perspective view of a foot structure of a first leg of an absolute gravimeter according to an embodiment of the present invention;
fig. 7 is a front view of a foot structure of a first leg of an absolute gravimeter according to an embodiment of the present invention;
fig. 8 is a perspective view of a third leg of an absolute gravimeter according to an embodiment of the present invention;
FIG. 9 is a front view of a third leg of an absolute gravimeter according to an embodiment of the present invention;
in all the figures, the same reference numerals denote the same features, in particular: 1. upper unit, 2 lower unit, 3 bottom plate assembly, 301 upper bottom plate, 302 lower bottom plate; 4. a first leg, 401, a first strut, 402, a foot, 403, a first lifting part; 5. a second leg 501, a second strut 502, a second lifting portion; 6. the third supporting leg, 601, the supporting part, 602, the third lifting part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
The absolute gravimeter in the preferred embodiment of the present invention is shown in fig. 1 to 3, and mainly includes an upper unit 1 and a lower unit 2 arranged vertically. The upper unit 1 mainly comprises a falling body system, and the lower unit 2 mainly comprises a laser interference system, a vibration isolation system, an automatic leveling system and the like.
Further, the absolute gravimeter in the preferred embodiment is provided with a bottom plate assembly 3 corresponding to the upper unit 1 and the lower unit 2, which includes an upper bottom plate 301 correspondingly disposed between the upper unit 1 and the lower unit 2 and a lower bottom plate 302 disposed below the lower unit 2, specifically, the upper bottom plate 301 and the lower bottom plate 302 are respectively disposed horizontally, the upper unit 1 is correspondingly disposed on the top surface of the upper bottom plate 301, the lower unit 2 is correspondingly disposed on the top surface of the lower bottom plate 302, and the upper unit 1 and the lower unit 2 are preferably coaxially disposed.
Further, in the preferred embodiment, a first leg assembly and a second leg assembly are circumferentially disposed on the periphery of the bottom surface of the upper base plate 301 corresponding to the upper unit 1. The first leg assembly comprises a plurality of first legs 4 arranged at intervals in the circumferential direction, and the structure of the first leg assembly is as shown in figures 1-4; the second leg assembly comprises a plurality of circumferentially spaced second legs 5, the first legs 4 and the second legs 5 in the preferred embodiment being circumferentially spaced and preferably equally spaced. Further, the number of the first legs 4 and the number of the second legs 5 in the preferred embodiment are three, and two adjacent legs are spaced by 60 °, that is, the first legs 4 and the second legs 5 are spaced by 60 °.
More specifically, the first leg 4 in the preferred embodiment is shown in fig. 1-3 and includes a first leg 401 as shown in fig. 4 and a foot 402 disposed at the bottom of the first leg 401. The first supporting rod 401 is vertically arranged, the top of the first supporting rod 401 is correspondingly connected to the periphery of the bottom surface of the upper bottom plate 301, the ground feet 402 are coaxially arranged below the bottom of the first supporting rod 401, and the ground feet are correspondingly connected to the bottom surface of the first supporting rod 401 through the first lifting part 403; it should be noted that the first lifting unit 403 is correspondingly connected to the bottom end surface of the first supporting rod 401 and/or the top surface of the anchor 402 through a first telescopic connecting rod, and the bottom surface of the anchor 402 can be abutted to the working table of the working position through corresponding extension and retraction of the first connecting rod, where the working table may be the ground or the working table of an absolute gravimeter during working in an automobile, a cabin, or the like.
Further, the second leg 5 in the preferred embodiment is disposed between the upper base plate 301 and the lower base plate 302, and as shown in fig. 5, it includes a second supporting rod 501 disposed vertically and a second lifting portion 502 disposed at the bottom of the second supporting rod 501. The second supporting rod 501 is vertically arranged, the top of the second supporting rod 501 is correspondingly connected to the periphery of the bottom surface of the upper bottom plate 301, the second lifting part 502 is correspondingly connected to the bottom surface of the second supporting rod 501 through a telescopic second connecting rod, and then the bottom surface of the second lifting part 502 can be abutted to or separated from the top surface of the lower bottom plate 302 through corresponding telescopic of the second connecting rod; further, after the second lifting portion 502 in the preferred embodiment abuts against the top surface of the lower base plate 302, it can be fixed to the top surface of the lower base plate 302, and the fixing manner can be preferably implemented according to actual needs, for example, by magnetic attraction, a snap, a locking pin, etc.; further preferably, on the bottom plate 302 just faces the top surface of second lift portion 502, set up the recess of certain degree of depth for the bottom of second lift portion 502 can be embedded into and correspond in the recess, with the quick location of realizing second landing leg 4, guarantees the stability of second landing leg 5 when corresponding butt bottom plate 302, prevents rocking of second branch 501.
Further preferably, the upper base plate 301 and the lower base plate 302 in the preferred embodiment are respectively provided with a protrusion corresponding to the second leg 5 on the periphery, so as to correspondingly realize the connection of the top of the second support rod 501 and the abutting and consolidation of the bottom of the second lifting portion 502, so that the structure size of the two base plates can be reduced, the dead weight of the absolute gravimeter can be reduced, the corresponding arrangement of the first leg assembly can be ensured, the mutual interference between the first leg assembly and the lower base plate 302 during the operation can be avoided, and the normal and stable operation of the first leg assembly and the second leg assembly can be ensured. Furthermore, if the second leg 5 is disposed too close to the lower unit 2, the movement of the drop system in the upper unit 1 may adversely affect the laser interference system in the lower unit 2, and therefore, with the above arrangement, the second leg 5 may also be sufficiently distanced from the laser interference system in the lower unit 2 to reduce the effect of the movement of the drop system in the upper unit 1 on the lower unit 2.
Of course, it is obvious that the second supporting rod 501 and the second lifting portion 502 can be disposed between the upper base plate 301 and the lower base plate 302 in a turning manner, that is, one end of the second supporting rod 501 departing from the second lifting portion 502 is correspondingly connected to the lower base plate 302, and the second lifting portion 502 is correspondingly matched with the bottom surface of the upper base plate 301 and is fixedly connected to the bottom surface of the upper base plate 301 after abutting against the bottom surface of the upper base plate 301.
Further, the third leg 6 in the preferred embodiment is correspondingly disposed on the bottom surface of the lower plate 302, as shown in fig. 2 and 3, and as can be seen from the figure, the third leg 6 is a plurality of circumferentially spaced apart portions on the bottom surface of the lower plate 302. Specifically, in the preferred embodiment, the number of the third legs 6 provided on the bottom surface of the lower plate 302 is three at intervals in the circumferential direction, and each third leg 6 includes a support portion 601 provided on the bottom and a third raised/lowered portion 602 provided between the lower plate 302 and the support portion 601, as shown in fig. 8 and 9. Further, the third lifting portion 602 is correspondingly connected to the bottom surface of the lower base plate 302 and/or the top surface of the supporting portion through a retractable third connecting rod, and then the corresponding leveling of the lower base plate 302 can be realized through the retraction of the corresponding third connecting rod.
The utility model discloses absolute gravimeter in the preferred embodiment, it compares in current absolute gravimeter, can realize complete machine leveling and the accurate measurement under the static measurement environment (as ordinary subaerial), also can realize the complete machine leveling and the data measurement under the dynamic measurement environment (as on-vehicle, measurement environment such as shipborne). When the absolute gravimeter is transported correspondingly, the corresponding connection of the upper unit 1 and the lower unit 2 in the absolute gravimeter is realized by the corresponding connection of the second leg assembly, namely, the second leg assembly correspondingly connects the upper bottom plate 301 and the lower bottom plate 302, and then the complete machine transportation of the absolute gravimeter is realized.
When the absolute gravimeter is transported to a position to be worked, if the working environment of the absolute gravimeter is a static environment, the ground in the preferred embodiment, the complete absolute gravimeter can be directly transported to a measuring position, then each third leg 6 is controlled to carry out the complete machine leveling, after the complete machine leveling, the fixed end part of each second leg 5 and the lower bottom plate 302 is unlocked, each first leg 4 is controlled to be abutted against the ground through the ground pin 402, correspondingly, the second lifting part 502 of the second leg 5 is controlled to shrink, the end part of the second leg 5 is far away from the top surface of the lower bottom plate 302, at the moment, the upper bottom plate 301 and the upper unit 1 are correspondingly supported by each first leg 4, the accurate leveling of the upper bottom plate 301 and the upper unit 1 can be realized by adjusting each first leg 4, at the moment, the lower bottom plate 302 and the lower unit 2 are correspondingly supported by each third leg 6, the accurate leveling of the lower bottom plate 302 and the lower unit 2 can be realized by adjusting, the high-precision measurement of the absolute gravimeter can be realized by respectively and accurately leveling the upper and lower bottom plates.
If the working environment of the absolute gravimeter is a dynamic environment, such as in a vehicle transporting the absolute gravimeter or in a cabin on the water surface, the complete absolute gravimeter can be transported to a corresponding working position, and of course, if the measuring position is directly in the vehicle transporting the absolute gravimeter, the transporting process can be omitted. In a dynamic measurement environment, since the leveling positions of the upper unit 1 and the lower unit 2 may change along with the movement of the vehicle body and the ship body after the absolute gravimeter is placed, the accurate leveling of the upper unit 1 and the lower unit 2 respectively is difficult. Therefore, after the absolute gravimeter reaches a measuring position, the third support legs 6 can be directly controlled to realize the whole machine leveling of the absolute gravimeter, after the whole machine leveling, corresponding absolute gravity data measurement is directly carried out, at the moment, the first support leg assembly is suspended and does not work, the second support leg assembly plays a role in fixedly connecting and relatively leveling, and the third support leg assembly plays a role in the whole machine leveling, so that although certain measuring accuracy can be lost, the absolute gravity measurement under dynamic measuring environments such as vehicle-mounted and ship-mounted environments can be met to a certain extent.
Further preferably, each lifting portion in the preferred embodiment can be adjusted by a motor automatically or manually, that is, the first lifting portion 403, the second lifting portion 502, and the third lifting portion 602 can be adjusted by a motor automatically or manually, in order to ensure the adjustment precision and improve the adjustment efficiency, each lifting portion in the preferred embodiment is adjusted and controlled by a motor to realize the automatic adjustment of the absolute gravimeter under the corresponding working environment, the adjustment precision is high, and the accuracy of the measurement result is high.
The utility model provides an absolute gravimeter, its simple structure, control is simple and convenient, through the setting of corresponding of first landing leg subassembly, second landing leg subassembly and third landing leg subassembly, can realize the complete machine leveling of absolute gravimeter under static measurement environment and dynamic measurement environment respectively to realize then the measurement work of absolute gravimeter under the corresponding environment, enlarged absolute gravimeter's application scope, had better application prospect and popularization and application and worth.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An absolute gravimeter comprises an upper unit and a lower unit which are arranged at intervals in the vertical direction, and is characterized by further comprising a bottom plate assembly and a support leg assembly arranged corresponding to the bottom plate assembly; wherein,
the bottom plate assembly comprises an upper bottom plate and a lower bottom plate which is oppositely arranged below the upper bottom plate, the upper unit is correspondingly arranged on the top surface of the upper bottom plate, and the lower unit is correspondingly arranged on the top surface of the lower bottom plate; and is
The supporting leg assembly comprises at least three first supporting legs arranged on the bottom surface of the upper base plate at intervals, at least three second supporting legs arranged between the bottom surface of the upper base plate and the top surface of the lower base plate at intervals, and at least three third supporting legs arranged on the bottom surface of the lower base plate at intervals; wherein,
the first supporting leg is arranged between the upper base plate and the working table of the absolute gravimeter, the top of the first supporting leg is correspondingly connected with the bottom surface of the upper base plate, the first supporting leg can correspondingly stretch along the length direction, and the bottom of the first supporting leg can be abutted against or far away from the working table; one end of the second supporting leg is a connecting end correspondingly connected with the bottom surface of the upper bottom plate or the top surface of the lower bottom plate, the other end of the second supporting leg is a telescopic end capable of correspondingly extending and retracting along the length direction, and the telescopic end can correspondingly abut against the corresponding end surface of the bottom plate and is fixedly connected with the bottom plate so as to realize the mutual independence or mutual fixed connection of the upper bottom plate and the lower bottom plate; the top of third landing leg is corresponding to be connected on the bottom surface of lower plate, its bottom can correspond the butt table surface is in order to support the lower plate, just the third landing leg can be followed length direction and correspond flexible, in order to be used for realizing the leveling of lower plate.
2. The absolute gravimeter according to claim 1, wherein the first and second legs and the third leg are each three spaced apart.
3. The absolute gravimeter according to claim 2, wherein the first and second legs, and the third leg are each vertically disposed.
4. The absolute gravimeter according to any one of claims 1 to 3, wherein the first leg includes a first support rod and a ground foot coaxially disposed at a bottom of the first support rod, and a first lifting portion disposed between the first support rod and the ground foot, the first lifting portion being connected to a bottom of the first support rod and/or a bottom of the ground foot with a retractable first connecting rod.
5. The absolute gravimeter according to any one of claims 1 to 3, wherein the second leg includes a second supporting rod and a second lifting portion, the second supporting rod and the second lifting portion are coaxially disposed, an end of the second supporting rod, which is away from the second lifting portion, is the connecting end, the second lifting portion is correspondingly connected to the second supporting rod through a second telescopic connecting rod, and then the second lifting portion can be abutted to or separated from the corresponding bottom plate through corresponding telescopic of the second connecting rod.
6. The absolute gravimeter according to any of claims 1-3, wherein the third leg includes a support portion abutting the work surface and a third lifting portion correspondingly connected to the bottom surface of the lower plate, the third lifting portion correspondingly connected to the support portion and/or the lower plate with a third link that is retractable.
7. The absolute gravimeter according to any of claims 1-3, wherein the first legs alternate with the second legs in a circumferential direction, and each of the first legs are equally spaced in the circumferential direction and each of the second legs are equally spaced in the circumferential direction.
8. The absolute gravimeter according to any one of claims 1 to 3, wherein a control motor is provided corresponding to each of the first leg, the second leg and the third leg, and each leg can be correspondingly extended and retracted under the control of the control motor.
9. The absolute gravimeter according to any one of claims 1 to 3, wherein the peripheries of the upper and lower base plates are provided with protrusions corresponding to the ends of the second legs, respectively, so that the ends of the second legs can be correspondingly connected or abutted and then fixedly connected to the end faces of the protrusions, so that the second legs can be far away from the lower unit.
10. The absolute gravimeter according to any one of claims 1 to 3, wherein a groove with a certain depth is formed on the end surface of the corresponding bottom plate corresponding to the telescopic end of the second leg, and the telescopic end can be correspondingly inserted into the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242329.7U CN209525470U (en) | 2019-02-26 | 2019-02-26 | A kind of absolute gravimeter |
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| CN201920242329.7U CN209525470U (en) | 2019-02-26 | 2019-02-26 | A kind of absolute gravimeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709620A (en) * | 2019-02-26 | 2019-05-03 | 中国科学院测量与地球物理研究所 | A kind of absolute gravimeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709620A (en) * | 2019-02-26 | 2019-05-03 | 中国科学院测量与地球物理研究所 | A kind of absolute gravimeter |
| CN109709620B (en) * | 2019-02-26 | 2024-05-17 | 中国科学院测量与地球物理研究所 | Absolute gravimeter |
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