Falling body adjusting tool for floating type absolute gravimeter

Abstract

The invention discloses a floating type absolute gravimeter falling body adjusting tool. The falling body adjusting tool comprises a falling body bearing ring, a falling body adjusting device, a suspension supporting structure and a tool support. The falling body is fixedly arranged in the falling body bearing ring; the falling body adjusting device is arranged on the falling body and used for adjusting the mass center of the falling body; the falling body bearing ring is fixed to the tool support in a suspension mode through the suspension supporting structure. According to the floating type absolute gravimeter falling body adjusting tool, the falling body is fixedly installed on the falling body bearing ring, the falling body bearing ring and the falling body on the falling body bearing ring are fixedly supported in a suspension mode, contact friction between the tool and the falling body bearing ring is avoided, the contact friction force is eliminated, meanwhile, the mass center of the falling body is adjusted through the falling body adjusting device, and therefore the falling body adjusting efficiency is improved. The step of measuring by using a high-precision electronic scale is omitted, the adjusting efficiency and the adjusting precision are improved, the centroid deviation of the falling body can be directly observed through gravity, and the centroid deviation observation effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of gravimeters, and in particular to a floating absolute gravimeter fall adjustment tooling. Background Art

[0002] As the core component of the high-precision absolute gravimeter, the adjustment accuracy of the falling body directly affects the measurement accuracy of the high-precision absolute gravimeter product, so it is very important to improve the adjustment accuracy of the falling body. The existing falling body adjustment tooling clamps the falling body through auxiliary tooling, first adjusts the optical center of the corner cone prism in the falling body, and then uses a high-precision electronic scale to measure the center of mass deviation of the falling body. After the measurement, the adjustment nut at the rear end of the falling body is adjusted to achieve wireless close coincidence between the center of mass of the falling body and the optical center. However, the clamping position is affected by the auxiliary tooling to clamp the falling body, and the high-precision electronic scale is used to weigh and adjust the adjustment nut of the falling body. The ambient temperature, humidity and ambient wind will affect the measurement value of the electronic scale. At the same time, the friction of the local contact of the most important tooling fulcrum will also affect the accuracy and sensitivity of the high-precision electronic scale measurement. In addition, repeatedly moving the tooling to the electronic scale will also affect the adjustment accuracy. Summary of the invention

[0003] The present application provides a floating absolute gravimeter fall adjustment tool, which eliminates the influence of friction of local contact of the existing adjustment tool fulcrum, and also saves the link of using a high-precision electronic scale for measurement, thereby improving the efficiency and accuracy of fall adjustment.

[0004] The specific technical solutions are as follows:

[0005] An embodiment of the present application provides a floating absolute gravimeter fall adjustment tooling, comprising: a fall receiving ring, a fall adjustment device, a suspension support structure and a tooling bracket; the fall is fixedly arranged in the fall receiving ring; the fall adjustment device is arranged on the fall, and is used to adjust the center of mass of the fall; the fall receiving ring is suspended and fixed on the tooling bracket through the suspension support structure.

[0006] In some embodiments of the present application, the falling object receiving ring is a circular ring structure, and the falling object receiving ring is sleeved on the outer surface of the falling object.

[0007] In some embodiments of the present application, a fixing hole is provided on the falling object receiving ring, the fixing hole is connected to the inner and outer side walls of the falling object receiving ring, and an isosceles trapezoidal groove is provided on the inner side wall of the falling object receiving ring, and the fixing hole and the isosceles trapezoidal groove are respectively arranged at two ends of the falling object receiving ring along the first direction; the falling object is clamped in the isosceles trapezoidal groove, and a fixing screw is passed through the fixing hole and abuts against the falling object, so as to realize the fixed installation of the falling object in the falling object receiving ring, and make the central axis of the falling object coincide with the central axis of the falling object receiving ring;

[0008] The first direction is a direction perpendicular to the ground.

[0009] In some embodiments of the present application, the falling object includes a falling object body, a falling object prism and a threaded rod, the falling object prism is fixedly installed in the falling object body, and the falling object prism is exposed on one side of the end cover of the falling object body, the threaded rod is integrally connected to the side of the falling object body opposite to the end cover along the second direction, and the falling object receiving ring is sleeved on the middle part of the falling object body;

[0010] The falling object adjustment device comprises an adjustment nut, which is sleeved on the threaded rod, and the center of mass of the falling object is adjusted by setting the position of the adjustment nut on the threaded rod;

[0011] The second direction is perpendicular to the first direction.

[0012] In some embodiments of the present application, the tooling bracket includes a base and an integrated bracket, the integrated bracket includes a horizontal portion and two vertical portions, the horizontal portion is arranged perpendicular to the first direction, the two vertical portions are respectively vertically connected to two ends of the horizontal portion along the third direction, the base is arranged on an end surface of the horizontal portion away from the two vertical portions, and the shape and size of the base match the shape and size of the horizontal portion;

[0013] The first direction is a direction perpendicular to the ground, and the third direction and the first direction are perpendicular to each other.

[0014] In some embodiments of the present application, the suspension support structure includes a throttle valve, two suspension pins, an air inlet, an air outlet, a main branch air path and two branch air paths, the two vertical parts are respectively provided with a V-shaped opening groove at the end center away from the horizontal part, the V-shaped opening groove is extended along the third direction, and the bottom of each V-shaped opening groove is respectively provided with an air outlet, the two branch air paths are respectively arranged in the two vertical parts, and the air outlet is connected to the branch air path, the air inlet is arranged on the first side surface of the base arranged along the second direction, the main branch air path is arranged in the base, and the air inlet is connected to the main branch air path, the two branch air paths are respectively connected to the main branch air path, the outlet of the throttle valve is connected to the air inlet, the two suspension pins are respectively arranged at the two ends of the falling body receiving ring along the third direction, and the gas ejected by the suspension pin through the air outlet is suspended in the V-shaped opening groove, so that the falling body receiving ring is suspended and fixed on the integrated bracket;

[0015] The first direction, the second direction and the third direction are perpendicular to each other.

[0016] In some embodiments of the present application, the main branch air path is T-shaped, and each of the branch air paths is straight. The first air port of the main branch air path is connected to the air inlet, and the second air port and the third air port of the main branch air path are respectively connected to the first air ports of the two branch air paths, and the second air ports of the two branch air paths are respectively connected to the two air outlets.

[0017] In some embodiments of the present application, the tooling bracket includes a bottom bracket and two side brackets, the bottom bracket is arranged perpendicular to the first direction, the two side brackets are respectively vertically connected to two ends of the bottom bracket along the third direction, and the suspension support structure is arranged at one end of the two side brackets away from the bottom bracket;

[0018] The first direction is a direction perpendicular to the ground, and the first direction, the second direction and the third direction are perpendicular to each other.

[0019] In some embodiments of the present application, the suspension support structure includes an electromagnetic suspension coil and a permanent magnet, and one of the permanent magnets is respectively provided at both ends of the falling object receiving ring along the third direction, and a plurality of the electromagnetic suspension coils are respectively provided at one end of the two side brackets away from the bottom bracket, and the falling object receiving ring is suspended and fixed on the tooling bracket by the permanent magnet and the electromagnetic suspension coil.

[0020] In some embodiments of the present application, the suspended support structure further includes a Hall sensor, and the end of each side bracket away from the bottom bracket is respectively provided with the Hall sensor in the first direction, the second direction, and the third direction.

[0021] The beneficial effects of the embodiments of the present application are as follows:

[0022] In the falling body adjustment tooling of the floating absolute gravimeter, the falling body is fixedly mounted on the falling body receiving ring, and the falling body receiving ring and the falling body thereon are fixedly supported in a suspended manner, thereby avoiding contact friction between the tooling and the falling body receiving ring and eliminating contact friction. At the same time, based on this, the center of mass of the falling body is adjusted by the falling body adjustment device, eliminating the step of using a high-precision electronic scale for measurement, improving the adjustment efficiency and adjustment accuracy, and the center of mass deviation of the falling body can be directly observed by gravity, thereby improving the observation effect of the center of mass deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of a floating absolute gravimeter fall adjustment tooling provided in Example 1 of the present application;

[0025] Figure 2 A schematic diagram of the structure of the falling object receiving ring provided in this application;

[0026] Figure 3 A schematic diagram of the structure of the falling object provided for this application;

[0027] Figure 4 A schematic diagram of the structure of a floating absolute gravimeter fall adjustment tooling provided in Example 2 of the present application;

[0028] Explanation of the accompanying drawings: 100 is a falling object receiving ring, 110 is a fixing hole, 120 is a fixing screw, 130 is an isosceles trapezoidal slot, 200 is a suspension support structure, 211 is a throttle valve, 212 is a suspension pin, 213 is a V-shaped opening groove, 221 is an electromagnetic suspension coil, 222 is a permanent magnet, 300 is a tooling bracket, 311 is a base, 312 is an integrated bracket, 313 is a horizontal part, 314 is a vertical part, 321 is a bottom bracket, 322 is a side bracket, 400 is a falling object, 410 is a falling object body, 420 is a falling object prism, 430 is a threaded rod, and 500 is a falling object adjustment device. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The terms "including" and "having" in the embodiments of the present application and the accompanying drawings and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0031] The embodiment of the present application discloses a floating absolute gravimeter fall adjustment tool, which eliminates the influence of friction of local contact of the existing adjustment tool support point, and also saves the link of using a high-precision electronic scale for measurement, thereby improving the efficiency and accuracy of the fall adjustment. Detailed descriptions are given below.

[0032] Embodiment 1

[0033] Figure 1 – Figure 3 A floating absolute gravimeter fall adjustment tooling is shown according to the first embodiment of the present application. Figure 1 As shown, the falling object adjustment tooling includes: a falling object receiving ring 100, a falling object adjustment device 500, a suspension support structure 200 and a tooling bracket 300. The falling object receiving ring 100 is used to fix the falling object 400, and the falling object 400 is fixedly arranged in the falling object receiving ring 100. The falling object adjustment device 500 is arranged on the falling object 400, and is used to adjust the center of mass of the falling object 400. At the same time, the falling object receiving ring 100 in the falling object adjustment tool is suspended and fixed on the tool bracket 300 by the suspension support structure 200. On the one hand, the contact friction between the tool and the falling object receiving ring can be avoided by fixing and supporting the falling object receiving ring 100 in a suspended manner, eliminating the influence of local contact friction of the existing tool fulcrum. On the other hand, the static balance principle can be used to more intuitively observe the center of mass deviation of the falling object through the suspension method, and the center of mass of the falling object 400 can be adjusted through the falling object adjustment device 500, so that the center of mass of the falling object 400 and the optical center of the corner cone prism in the falling object 400 are infinitely close to each other, eliminating the need to use a high-precision electronic scale for measurement, and the center of mass deviation of the falling object can be directly observed by gravity, which can effectively improve the adjustment efficiency and accuracy.

[0034] In the first embodiment of the present application, the first direction is a direction perpendicular to the ground, the third direction, the second direction and the first direction are perpendicular to each other, and the second direction is the extension direction of the falling object 400. It should be noted that the "vertical" in the first embodiment of the present application is not absolutely vertical, and can be 90°±10°.

[0035] In the first embodiment of the present application, Figure 1 and Figure 2As shown, the falling body receiving ring 100 is a circular ring structure, and the falling body receiving ring 100 is sleeved on the outer surface of the falling body 400. Further, the falling body 400 is fixedly installed on the falling body receiving ring 100 by means of fixing screws 120 and isosceles trapezoidal grooves 130. In detail, the falling body receiving ring 100 is provided with a fixing hole 110, and the fixing hole 110 is connected to the inner and outer side walls of the falling body receiving ring 100. The fixing screw 120 is arranged in the fixing hole 110. Correspondingly, the inner side wall of the falling body receiving ring 100 is provided with an isosceles trapezoidal groove 130, and the fixing hole 110 and the isosceles trapezoidal groove 130 are respectively arranged at the two ends of the falling body receiving ring 100 along the first direction. When the falling body 400 is fixedly assembled, the falling body 400 is clamped in the isosceles trapezoidal clamping groove 130, and the fixing screw 120 passes through the fixing hole 110 and abuts against the falling body 400, thereby realizing the fixed installation of the falling body 400 in the falling body receiving ring 100, and making the central axis of the falling body 400 coincide with the central axis of the falling body receiving ring 100.

[0036] In the first embodiment of the present application, Figure 1 and Figure 3 As shown, the falling body 400 includes a falling body body 410, a falling body prism 420 (i.e., a corner cube prism in the falling body 400) and a threaded rod 430. The falling body prism 420 is fixedly installed in the falling body body 410, and the falling body prism 420 is exposed on one side of the end cap of the falling body body 410. The threaded rod 430 is integrally connected to the side of the falling body body 410 opposite to its end cap along the second direction. The falling body receiving ring 100 is sleeved in the middle of the falling body body 410, that is, the middle of the falling body body 410 is clamped in the isosceles trapezoidal clamping groove 130, and is fixed by abutting with the fixing screw 120, so that the falling body 400 is fixedly installed on the falling body receiving ring 100 as a whole. Further, the falling body adjustment device 500 in the first embodiment of the present application includes an adjustment nut, which is sleeved on the threaded rod 430. By setting the position of the adjustment nut on the threaded rod 430, the center of mass of the falling body 400 is adjusted.

[0037] In the first embodiment of the present application, Figure 1As shown, the tooling support 300 includes a base 311 and an integrated support 312. Among them, the integrated support 312 includes a horizontal portion 313 and two vertical portions 314, the horizontal portion 313 is arranged perpendicular to the first direction, the two vertical portions 314 are respectively vertically connected to the two ends of the horizontal portion 313 along the third direction, the base 311 is arranged on the end surface of the horizontal portion 313 away from the two vertical portions 314, and the shape and size of the base 311 match the shape and size of the horizontal portion 313. Correspondingly, the suspension support structure 200 includes a throttle valve 211, two suspension pins 212, an air inlet (not shown in the figure), an air outlet (not shown in the figure), a main branch air path (not shown in the figure) and two branch air paths (not shown in the figure). The air inlet is arranged on the first side surface of the base 311 arranged along the second direction, the main branch air path is arranged in the base 311, and the air inlet is connected to the main branch air path, and at the same time, the outlet of the throttle valve 211 is connected to the air inlet. In addition, a V-shaped opening groove 213 is respectively provided at the center of the end surface of the two vertical parts 314 away from the horizontal part 313, and the V-shaped opening groove 213 is extended along the third direction, that is, the V-shaped opening end of the V-shaped opening groove 213 is along the first direction toward the direction away from the base 311, and a gas outlet is respectively provided at the bottom of each V-shaped opening groove 213. Two branch gas paths are respectively arranged in the two vertical parts 314, and the gas outlet is connected with the branch gas path. The two branch gas paths are respectively connected with the main branch gas path, so as to input clean pressure-stabilized gas, and enter the fall regulating tooling after the flow rate is controlled by the throttle valve 211, and then sprayed out from the gas outlet after passing through the main branch gas path and the branch gas path in turn. The two suspension pins 212 are respectively arranged at the two ends of the fall receiving ring 100 along the third direction. The gas ejected from the suspension pin 212 is suspended in the V-shaped opening groove 213. In this process, the airflow at the air outlet can be controlled by adjusting the throttle valve 211 to observe and ensure that the fall receiving ring 100 and the fall 400 thereon reach a suspended state, so that the fall receiving ring 100 is suspended and fixed on the integrated bracket 312.

[0038] In the specific implementation process, the main branch air path is T-shaped, and each branch air path is straight. The first air port of the main branch air path is connected to the air inlet, and the second air port and the third air port of the main branch air path are respectively connected to the first air port of the two branch air paths, and the second air ports of the two branch air paths are respectively connected to the two air outlets, and the two branch air paths are symmetrically arranged relative to the main branch air path, so that the clean and pressure-stabilized gas input from the air inlet can quickly reach the two air outlets and ensure that the airflows at the two air outlets are the same, thereby ensuring the stability of the falling body receiving ring 100 and the falling body 400 in the third direction.

[0039] Embodiment 2

[0040] Figure 2 – Figure 4A floating absolute gravimeter fall adjustment tooling is shown according to the first embodiment of the present application. Figure 4 As shown, the falling object adjustment tooling includes: a falling object receiving ring 100, a falling object adjustment device 500, a suspension support structure 200 and a tooling bracket 300. The falling object receiving ring 100 is used to fix the falling object 400, and the falling object 400 is fixedly arranged in the falling object receiving ring 100. The falling object adjustment device 500 is arranged on the falling object 400, and is used to adjust the center of mass of the falling object 400. At the same time, the falling object receiving ring 100 in the falling object adjustment tool is suspended and fixed on the tool bracket 300 by the suspension support structure 200. On the one hand, the contact friction between the tool and the falling object receiving ring can be avoided by fixing and supporting the falling object receiving ring 100 in a suspended manner, eliminating the influence of local contact friction of the existing tool fulcrum. On the other hand, the static balance principle can be used to more intuitively observe the center of mass deviation of the falling object through the suspension method, and the center of mass of the falling object 400 can be adjusted through the falling object adjustment device 500, so that the center of mass of the falling object 400 and the optical center of the corner cone prism in the falling object 400 are infinitely close to each other, eliminating the need to use a high-precision electronic scale for measurement, and the center of mass deviation of the falling object can be directly observed by gravity, which can effectively improve the adjustment efficiency and accuracy.

[0041] In the first embodiment of the present application, the first direction is a direction perpendicular to the ground, the third direction, the second direction and the first direction are perpendicular to each other, and the second direction is the extension direction of the falling object 400. It should be noted that the "vertical" in the first embodiment of the present application is not absolutely vertical, and can be 90°±10°.

[0042] In the first embodiment of the present application, Figure 2 and Figure 4 As shown, the falling body receiving ring 100 is a circular ring structure, and the falling body receiving ring 100 is sleeved on the outer surface of the falling body 400. Further, the falling body 400 is fixedly installed on the falling body receiving ring 100 by means of fixing screws 120 and isosceles trapezoidal grooves 130. In detail, the falling body receiving ring 100 is provided with a fixing hole 110, and the fixing hole 110 is connected to the inner and outer side walls of the falling body receiving ring 100. The fixing screw 120 is arranged in the fixing hole 110. Correspondingly, the inner side wall of the falling body receiving ring 100 is provided with an isosceles trapezoidal groove 130, and the fixing hole 110 and the isosceles trapezoidal groove 130 are respectively arranged at the two ends of the falling body receiving ring 100 along the first direction. When the falling body 400 is fixedly assembled, the falling body 400 is clamped in the isosceles trapezoidal clamping groove 130, and the fixing screw 120 passes through the fixing hole 110 and abuts against the falling body 400, thereby realizing the fixed installation of the falling body 400 in the falling body receiving ring 100, and making the central axis of the falling body 400 coincide with the central axis of the falling body receiving ring 100.

[0043] In the first embodiment of the present application, Figure 3 and Figure 4As shown, the falling body 400 includes a falling body body 410, a falling body prism 420 (i.e., a corner cube prism in the falling body 400) and a threaded rod 430. The falling body prism 420 is fixedly installed in the falling body body 410, and the falling body prism 420 is exposed on one side of the end cap of the falling body body 410. The threaded rod 430 is integrally connected to the side of the falling body body 410 opposite to its end cap along the second direction. The falling body receiving ring 100 is sleeved in the middle of the falling body body 410, that is, the middle of the falling body body 410 is clamped in the isosceles trapezoidal clamping groove 130, and is fixed by abutting with the fixing screw 120, so that the falling body 400 is fixedly installed on the falling body receiving ring 100 as a whole. Further, the falling body adjustment device 500 in the first embodiment of the present application includes an adjustment nut, which is sleeved on the threaded rod 430. By setting the position of the adjustment nut on the threaded rod 430, the center of mass of the falling body 400 is adjusted.

[0044] In the second embodiment of the present application, Figure 4 As shown, the tooling support 300 includes a bottom support 321 and two side supports 322. The bottom support 321 is arranged perpendicular to the first direction, the two side supports 322 are respectively vertically connected to the two ends of the bottom support 321 along the third direction, and the suspension support structure 200 is arranged at one end of the two side supports 322 away from the bottom support 321. More specifically, the suspension support structure 200 includes an electromagnetic suspension coil 221 and a permanent magnet 222. A permanent magnet 222 is respectively arranged at both ends of the falling body receiving ring 100 along the third direction, and a plurality of electromagnetic suspension coils 221 are respectively arranged at one end of the two side supports 322 away from the bottom support 321. The falling body receiving ring 100 is suspended and fixed on the tooling support 300 by the permanent magnet 222 and the electromagnetic suspension coil 221.

[0045] In the specific implementation process, the suspension support structure 200 also includes a Hall sensor (not shown in the figure), and each side bracket 322 is respectively provided with a Hall sensor in the first direction, the second direction, and the third direction at one end away from the bottom bracket 321, so that the magnetic pole information is received through the Hall sensor to realize closed-loop control of magnetic suspension.

[0046] In summary, the present application discloses a floating absolute gravimeter fall adjustment tooling, in which the falling body is fixedly mounted on a fall receiving ring, and the fall receiving ring and the falling body thereon are fixedly supported in a suspended manner, thereby avoiding contact friction between the tooling and the fall receiving ring, and eliminating contact friction. At the same time, based on this, the center of mass of the falling body is adjusted by the fall adjustment device, which eliminates the need for measuring with a high-precision electronic scale, improves the adjustment efficiency and accuracy, and can directly observe the center of mass deviation of the falling body by gravity, thereby improving the observation effect of the center of mass deviation.

[0047] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of an embodiment, and the components in the accompanying drawings are not necessarily necessary for implementing the present application. It should also be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0048] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of the embodiments of the present application, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0049] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope described in the claims.

Claims

1. A floating absolute gravimeter fall adjustment tool, characterized in that: include: Falling body receiving ring, falling body adjusting device, suspension support structure and tooling bracket; The falling object is fixedly arranged in the falling object receiving ring; The falling object adjustment device is arranged on the falling object and is used to adjust the center of mass of the falling object; The falling object receiving ring is suspended and fixed on the tooling bracket through the suspension support structure.

2. The floating absolute gravimeter fall adjustment tool according to claim 1, characterized in that: The falling object receiving ring is a circular ring structure, and the falling object receiving ring is sleeved on the outer surface of the falling object.

3. The floating absolute gravimeter fall adjustment tool according to claim 2, characterized in that: The falling object receiving ring is provided with a fixing hole, the fixing hole is connected to the inner and outer side walls of the falling object receiving ring, and an isosceles trapezoidal groove is provided on the inner side wall of the falling object receiving ring, the fixing hole and the isosceles trapezoidal groove are respectively arranged at two ends of the falling object receiving ring along the first direction; the falling object is clamped in the isosceles trapezoidal groove, and the fixing screw passes through the fixing hole and abuts against the falling object, so as to realize the fixed installation of the falling object in the falling object receiving ring, and make the central axis of the falling object coincide with the central axis of the falling object receiving ring; The first direction is a direction perpendicular to the ground.

4. The floating absolute gravimeter fall adjustment tool according to claim 3, characterized in that: The falling object comprises a falling object body, a falling object prism and a threaded rod, wherein the falling object prism is fixedly installed in the falling object body, and the falling object prism is exposed on one side of the end cover of the falling object body, the threaded rod is integrally connected to the side of the falling object body opposite to the end cover along the second direction, and the falling object receiving ring is sleeved on the middle part of the falling object body; The falling object adjustment device comprises an adjustment nut, which is sleeved on the threaded rod, and the center of mass of the falling object is adjusted by setting the position of the adjustment nut on the threaded rod; The second direction is perpendicular to the first direction.

5. The floating absolute gravimeter fall adjustment tool according to claim 1, characterized in that: The tooling bracket includes a base and an integrated bracket, the integrated bracket includes a horizontal portion and two vertical portions, the horizontal portion is arranged perpendicular to the first direction, the two vertical portions are respectively perpendicularly connected to the two ends of the horizontal portion along the third direction, the base is arranged on the end surface of the horizontal portion away from the two vertical portions, and the shape and size of the base match the shape and size of the horizontal portion; The first direction is a direction perpendicular to the ground, and the third direction and the first direction are perpendicular to each other.

6. The floating absolute gravimeter fall adjustment tool according to claim 5, characterized in that: The suspension support structure includes a throttle valve, two suspension pins, an air inlet, an air outlet, a main branch air path and two branch air paths, the two vertical parts are respectively provided with a V-shaped opening groove at the end center away from the horizontal part, the V-shaped opening groove is extended along the third direction, and the bottom of each V-shaped opening groove is respectively provided with an air outlet, the two branch air paths are respectively arranged in the two vertical parts, and the air outlet is connected to the branch air paths, the air inlet is arranged on the first side surface of the base arranged along the second direction, the main branch air path is arranged in the base, and the air inlet is connected to the main branch air path, the two branch air paths are respectively connected to the main branch air path, the outlet of the throttle valve is connected to the air inlet, the two suspension pins are respectively arranged at the two ends of the falling body receiving ring along the third direction, and the gas ejected by the suspension pin through the air outlet is suspended in the V-shaped opening groove, so that the falling body receiving ring is suspended and fixed on the integrated bracket; The first direction, the second direction and the third direction are perpendicular to each other.

7. The floating absolute gravimeter fall adjustment tool according to claim 5, characterized in that: The main branch air path is T-shaped, and each of the branch air paths is straight. The first air port of the main branch air path is connected to the air inlet, the second air port and the third air port of the main branch air path are respectively connected to the first air ports of the two branch air paths, and the second air ports of the two branch air paths are respectively connected to the two air outlets.

8. The floating absolute gravimeter fall adjustment tool according to claim 1, characterized in that: The tooling bracket includes a bottom bracket and two side brackets, the bottom bracket is arranged perpendicular to the first direction, the two side brackets are respectively perpendicularly connected to two ends of the bottom bracket along the third direction, and the suspension support structure is arranged at one end of the two side brackets away from the bottom bracket; The first direction is a direction perpendicular to the ground, and the first direction, the second direction and the third direction are perpendicular to each other.

9. The floating absolute gravimeter fall adjustment tool according to claim 8, characterized in that: The suspension support structure includes an electromagnetic suspension coil and a permanent magnet. The two ends of the falling object receiving ring along the third direction are respectively provided with a permanent magnet. The ends of the two side brackets away from the bottom bracket are respectively provided with a plurality of electromagnetic suspension coils. The falling object receiving ring is suspended and fixed on the tooling bracket by the permanent magnet and the electromagnetic suspension coil.

10. The floating absolute gravimeter fall adjustment tool according to claim 9, characterized in that: The suspension support structure also includes a Hall sensor, and one end of each side bracket away from the bottom bracket is respectively provided with the Hall sensor in the first direction, the second direction, and the third direction.

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