CN116517328B - Supporting and resetting device for floating object - Google Patents

Abstract

The present invention relates to the technical field of building structure repair, and in particular to a supporting and resetting device for floating objects, comprising: a shell; a first driving assembly, which is arranged in the shell and comprises a chain bracket, a chain assembly arranged in the chain bracket, a driving sprocket and a driven sprocket for driving the chain assembly to rotate, the chain assembly comprises a plurality of chain links and an outer chain plate which hinges the chain links into a chain, each chain link is provided with a roller group, each roller group comprises a plurality of rollers, and the axial direction of the rollers is perpendicular to the axial direction of the driving sprocket; an auxiliary support, which is symmetrically arranged on both sides of the first driving assembly, the auxiliary support comprises a supporting part and an arc-shaped top plate arranged on the top of the supporting part, a plurality of ball grooves are opened on the arc-shaped top plate, balls are rollably arranged in the ball grooves, and the top ends of the balls are flush with the top of the chain assembly; a second driving assembly, which comprises a driving member and a tray, the driving member is used to drive the tray to rotate, and the supporting part and the chain bracket are both fixed on the tray.

Description

Support and resetting device for floating objects

Technical Field

The invention relates to the technical field of building structure repair, and in particular to a supporting and resetting device for a floating object.

Background Art

Floating is a common way of placing objects. There is no mechanical connection between the base of the object and the supporting platform, such as placing instruments and equipment on the storage platform, placing traditional building columns on the foundation, and placing museum cultural relics in display cabinets. Due to the lack of embedding measures on the supporting platform, the objects are more sensitive to environmental vibrations and are easily induced to move themselves. The column is the core component for transmitting vertical loads in the building. The deadweight and load of the superstructure are transmitted to the foundation through the column, and then from the foundation to the foundation. Taking traditional buildings as an example, during an earthquake, the columns floating on the foundation will produce swaying, sliding, swaying and sliding, and other forms of movement. The columns originally standing upright in the middle of the foundation will deviate from the center, and some even have the risk of falling out of the foundation or even overturning. For columns that have deviated from the center of the foundation, in order to ensure the stability of the superstructure, the columns must be reset in time.

Existing methods for resetting floating columns can be roughly divided into two categories: one is traditional repair, and the other is using a new type of foundation.

Due to the heavy weight and complex structure of the superstructure, traditional repair methods inevitably require the introduction of large lifting equipment, traction equipment, and a large number of various supporting structures including scaffolding. When the superstructure can be removed, the application of traditional repair methods usually requires the entire superstructure to be removed, which is a huge amount of work and extremely costly.

The new basic form is disclosed in the publication number CN112922376A, which is a reset device and method for supporting and monitoring the displacement of a column. It includes a support base, a monitoring system and a reset mechanism. A combined monitoring component of the monitoring system is arranged in the lower space of the mounting plate of the support base, and a reset mechanism is arranged in the upper space of the mounting plate. The flat bottom of the column contacts the support plate of the support base, and the sensing end of the combined monitoring component contacts the bottom of the column through the monitoring holes of the mounting plate and the support plate. A plurality of eccentric driving wheels are located in the wheel holes around the bottom of the column. The displacement of the bottom of the column is monitored in real time by the monitoring system, and the bottom of the column is driven to move in the opposite direction and reset by the reset mechanism. However, the device cannot achieve smoothness and continuity in the column reset, and has great difficulty in operation.

Summary of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the column cannot be reset smoothly and continuously, thereby providing a supporting and resetting device for floating objects.

To solve the above technical problems, the present invention provides a supporting and resetting device for floating objects, comprising: a shell; a first driving assembly, arranged in the shell, comprising a chain bracket, a chain assembly arranged in the chain bracket, a driving sprocket and a driven sprocket for driving the chain assembly to rotate, the chain assembly comprising a plurality of chain links and an outer chain plate hinged to the chain links into a chain, each of the chain links is provided with a roller group, each roller group comprises a plurality of rollers, and the axial direction of the rollers is perpendicular to the axial direction of the driving sprocket; an auxiliary support, symmetrically arranged on both sides of the first driving assembly, the auxiliary support comprises a supporting part and an arc-shaped top plate arranged on the top of the supporting part, a plurality of ball grooves are opened on the arc-shaped top plate, balls are rollably arranged in the ball grooves, and the top of the balls is flush with the top of the chain assembly; a second driving assembly, comprising a driving member and a tray, the driving member is used to drive the tray to rotate, and the supporting part and the chain bracket are both fixed on the tray.

Optionally, the supporting and resetting device for the floating object further comprises:

A top ring is fixedly arranged in the outer shell, the outer diameter of the top ring is consistent with the inner diameter of the outer shell, the auxiliary support is rotatably arranged on the inner side of the top ring, and the top ring is suitable for supporting the outer edge of the floating object.

Optionally, the top ring is connected to the arc-shaped top plate via a guide structure, and the guide structure is used to guide and limit the rotation of the auxiliary support.

Optionally, the guide structure includes a guide groove arranged on the inner side of the top ring, and a guide key arranged at the arc-shaped edge of the arc-shaped top plate, the guide groove is connected to a mounting slot, and the guide key can be slidably inserted into the guide groove through the mounting slot.

Optionally, the support portion includes a bottom horizontal plate, a vertical plate vertically arranged on the bottom horizontal plate, and a stiffening rib connecting the bottom horizontal plate and the vertical plate.

Optionally, the chain link includes two symmetrically arranged inner link plates, shoulder supports respectively fixedly connected to the inner link plates, a middle support arranged between the two shoulder supports, one outer link plate is respectively hinged to the adjacent inner link plates, and the middle support is fixedly connected to the shoulder support via a sprocket shaft pin.

Optionally, the roller assembly includes a roller bracket, the roller bracket is fixedly arranged on the chain link, a roller groove is arranged in the roller bracket, and the roller is rotatably arranged in the roller groove through a roller shaft pin.

Optionally, at least two roller groups are symmetrically arranged on each of the chain links, and the roller bracket spans over the shoulder support and the middle support.

Optionally, the driving sprocket is an outer rotor motor, comprising a stator and an outer rotor located outside the stator, the outer rotor surface is provided with a first tooth that cooperates with the chain assembly, and the stator is fixed in the chain bracket through a chain motor shaft;

The driven sprocket is hinged in the chain bracket through a sprocket shaft, and the driven sprocket is provided with a second tooth matched with the chain assembly.

Optionally, the housing is provided with a drain outlet.

The technical solution of the present invention has the following advantages:

The support and reset device for floating objects provided by the present invention has a chain assembly that is horizontally arranged in a shell as a whole, and an auxiliary support that can fill the gap between the chain assembly and the shell and transfer the load downward. The top of the ball and the top of the roller located on the upper side of the chain assembly are in contact with the floating column. When the floating column is offset, the driving member first drives the tray to rotate, and the tray drives the first driving assembly and the auxiliary support to rotate around the axis of the tray at the same time. When the transmission direction of the chain assembly is consistent with the offset direction of the column, the driving member stops working. After that, the driving sprocket rotates to drive the chain assembly and the driven sprocket to rotate, and the friction between the roller and the column along the direction of the roller rotation axis is used to drive the column to reset. By arranging a roller group on the chain link, each roller group includes a plurality of rollers, and the axial direction of the rollers is perpendicular to the axial direction of the driving sprocket, when the driving member drives the chain assembly to rotate around the axis of the pallet, the rollers also rotate around the axis of the pallet, and the friction force on the bottom surface of the column tangent to the rollers becomes as small as possible, thereby ensuring that the column will not be twisted due to the friction between the rollers during the rotation of the chain assembly around the axis of the pallet, and reducing the disturbance of the column during the rotation of the driving assembly into position. By arranging balls in the arc-shaped top plate of the auxiliary support, the balls can reduce the friction force on the bottom surface of the column when the arc-shaped top plate rotates, thereby ensuring that the column will not be twisted, and reducing the disturbance of the column during the rotation of the first driving assembly into position. The support and reset device for floating objects can rotate the chain assembly to any direction by setting a second drive assembly, so it can achieve 360-degree full-angle adjustment to meet the reset requirements of the column after it shifts in any direction on the foundation; during the 360-degree full-angle adjustment process, it is not affected by the gravity of the column, nor by the position of the column; the column is reset by the friction between the roller and the column when the chain assembly rotates, and the column reset process is continuous and smooth, without causing additional disturbance to the column and the main structure. The support and reset device for floating objects has a high degree of integration, can retain the original architectural style to the maximum extent, and does not occupy additional space.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a supporting and resetting device for a floating object provided in an embodiment of the present invention;

FIG2 is an exploded view of the support and resetting device for the floating object shown in FIG1 ;

FIG3 is a schematic diagram of the structure of the top ring shown in FIG2 ;

FIG4 is a schematic structural diagram of the auxiliary support shown in FIG2 ;

FIG5 is a top view of the top ring shown in FIG2 ;

FIG6 is a cross-sectional view taken along line AA in FIG5 ;

FIG7 is an exploded view of the first drive assembly;

FIG8 is a schematic structural diagram of a chain assembly;

FIG. 9 is an exploded view of the roller assembly.

Description of reference numerals:

1. Shell; 101. Side wall; 102. Bottom plate; 103. Drain port; 2. First drive assembly; 201. Chain bracket; 2011. Shaft bracket; 2012. Bracket bottom plate; 2013. Chain bracket shaft hole; 202. Chain assembly; 2021. Chain link; 20211. Inner chain plate; 20212. Shoulder support; 20213. Middle support; 20214. Sprocket shaft pin; 20215. Chain plate shaft pin; 2022. Outer chain plate; 20221. Outer chain plate hole; 203. Driving sprocket; 2031. Stator; 2032. Outer rotor; 2033. First tooth; 2034. Chain motor shaft hole; 2035. Chain motor shaft; 20 4. Driven sprocket; 2041. Sprocket shaft; 2042. Second tooth; 2043. Sprocket shaft hole; 205. Roller assembly; 2051. Roller; 20511. Roller hole; 2052. Roller bracket; 20521. Roller groove; 20522. Roller shaft pin hole; 2053. Roller shaft pin; 3. Auxiliary support; 301. Arc top plate; 3011. Ball groove; 3012. Guide key; 302. Ball; 303. Bottom horizontal plate; 304. Vertical plate; 305. Stiffening rib; 4. Second drive assembly; 401. Drive member; 4011. Motor rotor; 402. Tray; 5. Top ring; 501. Guide groove; 502. Mounting notch.

DETAILED DESCRIPTION

The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example

As shown in FIG. 1 to FIG. 9 , this embodiment provides a supporting and resetting device for a floating object.

In one embodiment, the supporting and resetting device for floating objects includes a housing 1 , a first driving assembly 2 , an auxiliary support 3 and a second driving assembly 4 .

The housing 1 includes a side wall 101 and a bottom plate 102, and the top of the side wall 101 forms a top opening opposite to the bottom plate 102; the first driving assembly 2 is arranged in the housing 1, including a chain bracket 201, a chain assembly 202 arranged in the chain bracket 201, a driving sprocket 203 and a driven sprocket 204 for driving the chain assembly 202 to rotate, the chain assembly 202 includes a plurality of chain links 2021 and an outer chain plate 2022 that hinges the chain links 2021 into a chain, each chain link 2021 is provided with a roller group 205, and each roller group 205 includes a plurality of rollers 2051 , the axial direction of the roller 2051 is perpendicular to the axial direction of the active sprocket 203; the auxiliary support 3 is symmetrically arranged on both sides of the first driving component 2, the auxiliary support 3 includes a supporting portion and an arc-shaped top plate 301 arranged on the top of the supporting portion, a plurality of ball grooves 3011 are opened on the arc-shaped top plate 301, and balls 302 are rollably arranged in the ball grooves 3011, and the top of the ball 302 is flush with the top of the chain component 202; the second driving component 4 includes a driving member 401 and a tray 402, the driving member 401 is used to drive the tray 402 to rotate, and the support portion and the chain bracket 201 are fixed on the tray 402.

In this embodiment, the chain assembly 202 is horizontally arranged in the housing as a whole, and the auxiliary support 3 can fill the gap between the chain assembly 202 and the housing 1 and transfer the load downward. The top of the ball 302 and the top of the roller 2051 located on the upper side of the chain assembly 202 are in contact with the floating column. When the floating column deviates, the driving member 401 first drives the tray 402 to rotate, and the tray 402 drives the first driving assembly 2 and the auxiliary support 3 to rotate around the axis of the tray 402 at the same time. When the transmission direction of the chain assembly 202 is consistent with the direction of column deviation, the driving member 401 stops working. After that, the driving sprocket 203 rotates to drive the chain assembly 202 and the driven sprocket 204 to rotate, and the friction between the roller 2051 and the column along the rotation axis of the roller 2051 is used to drive the column to reset. By arranging a roller group 205 on the chain link 2021, each roller group 205 includes a plurality of rollers 2051, and the axial direction of the roller 2051 is perpendicular to the axial direction of the driving sprocket 203. When the driving member 401 drives the chain assembly 202 to rotate around the axis of the tray 402, the roller 2051 also rotates around the axis of the tray 402, and the friction force on the bottom surface of the column tangent to the roller 2051 becomes as small as possible, thereby ensuring that the column will not be twisted due to the friction between the roller 2051 during the rotation of the chain assembly 202 around the axis of the tray 402, thereby reducing the disturbance of the column during the rotation of the driving assembly into position. By arranging a ball 302 in the arc-shaped top plate 301 of the auxiliary support 3, the friction force of the ball 302 on the bottom surface of the column when the arc-shaped top plate 301 rotates, thereby ensuring that the column will not be twisted, thereby reducing the disturbance of the column during the rotation of the first driving assembly 2 into position. The support and reset device for floating objects can make the chain assembly 202 rotate to any direction by setting the second driving assembly 4, so that 360-degree full-angle adjustment can be achieved to meet the reset requirements of the column after it is displaced in any direction on the foundation; during the 360-degree full-angle adjustment process, it is not affected by the gravity of the column, nor by the position of the column; the column is reset by the friction between the roller 2051 and the column when the chain assembly 202 rotates, and the column reset process is continuous and smooth, and no additional disturbance is generated to the column and the main structure. The support and reset device for floating objects has a high degree of integration, can retain the original architectural style to the maximum extent, and does not occupy additional space.

In one specific embodiment, as shown in FIG2 , the driving member 401 is a first driving motor, and a motor rotor 4011 of the first driving motor is fixedly connected to the tray 402. The first driving motor is specifically fixed on the bottom plate 102 of the housing 1.

It should be noted that the arc-shaped top plate 301 of the auxiliary support 3 has a vertical surface, and the gap between the vertical surface and the chain assembly 202 should be as small as possible.

On the basis of the above embodiments, in a preferred embodiment, the support and reset device for floating objects further comprises a top ring 5, which is fixedly arranged in the housing 1, and the outer diameter of the top ring 5 is consistent with the inner diameter of the housing 1, and the auxiliary support 3 is rotatably arranged inside the top ring 5. In this embodiment, by setting the top ring 5, the top ring 5 is used to support the outer edge of the floating object, such as a column, to ensure the stability of the column during the rotation of the first drive assembly 2 and the auxiliary support 3. In other alternative embodiments, the top ring 5 may not be set, and the top end of the housing 1 is used to support the outer edge of the column.

On the basis of the above-mentioned embodiment, in a preferred embodiment, the top ring 5 is connected with the arc-shaped top plate 301 through a guide structure, and the guide structure is used to guide and limit the rotation of the auxiliary support 3. In this embodiment, by providing the guide structure, it can be ensured that the auxiliary support 3 rotates along the inner ring of the top ring 5, and no deflection occurs during the rotation process.

On the basis of the above-mentioned embodiments, in a preferred embodiment, as shown in FIG3 and FIG4 , the guide structure includes a guide groove 501 provided on the inner side of the top ring 5, and a guide key 3012 provided at the arc edge of the arc top plate 301, the guide groove 501 is connected with the installation notch 502, and the guide key 3012 is slidably installed in the guide groove 501 through the installation notch 502. In this embodiment, the guide key 3012 is slidably installed in the guide groove 501 through the installation notch 502, and the guide key 3012 can slide along the guide groove 501, and the guide groove 501 guides and limits the sliding direction of the guide key 3012 to ensure smooth rotation of the auxiliary support 3. Of course, in an alternative embodiment, the guide key 3012 can be set on the inner side of the top ring 5, and the guide groove 501 can be set at the arc edge of the arc top plate 301.

Specifically in one embodiment, the guide groove 501 is a dovetail groove, and correspondingly, the guide key 3012 is a dovetail key.

Specifically in one embodiment, to ensure that the guide key 3012 can be installed in the guide groove 501, the cross section of the installation groove 502 is a rectangle, and the long side of the rectangle is not less than the length of the longer bottom side of the trapezoidal cross section of the dovetail groove.

On the basis of the above-mentioned embodiment, in a preferred embodiment, as shown in Fig. 2 and Fig. 4, the support portion includes a bottom horizontal plate 303, a vertical plate 304 vertically arranged on the bottom horizontal plate 303, and a stiffening rib 305 connecting the bottom horizontal plate 303 and the vertical plate 304. In this embodiment, by providing the stiffening rib 305, the support strength of the support portion can be ensured.

On the basis of the above embodiments, in a preferred embodiment, the chain link 2021 includes two symmetrically arranged inner link plates 20211, shoulder supports 20212 respectively fixedly connected to the inner link plates 20211, a middle support 20213 arranged between the two shoulder supports 20212, an outer link plate 2022 is respectively hinged to the adjacent inner link plates 20211, and the middle support 20213 is fixedly connected to the shoulder support 20212 via a sprocket shaft pin 20214. As shown in FIG8 , a pair of cylindrical chain plate shaft pins 20215 are symmetrically arranged on the outer side of the inner link plate 20211, and a pair of outer chain plate holes 20221 corresponding to the positions of the chain plate shaft pins 20215 are arranged on the outer chain plate 2022, and the diameter of the outer chain plate hole 20221 is consistent with the cross-sectional diameter of the chain plate shaft pin 20215.

On the basis of the above embodiments, in a preferred embodiment, the roller assembly 205 includes a roller bracket 2052, the roller bracket 2052 is fixedly arranged on the chain link 2021, a roller groove 20521 is arranged in the roller bracket 2052, and the roller 2051 is rotatably arranged in the roller groove 20521 through a roller shaft pin 2053. In this embodiment, the arrangement of the roller bracket 2052 facilitates the connection of the roller assembly 205 to the chain link 2021.

Specifically in one embodiment, the width of the roller groove 20521 is not less than the thickness of the roller 2051, and the length of the roller groove 20521 ensures that multiple rollers 2051 are arranged. As shown in FIG9 , a through roller shaft pin hole 20522 is provided on the side wall 101 of each roller bracket 2052, the number of roller shaft pin holes 20522 is consistent with the number of rollers 2051, and the inner diameter of the roller shaft pin hole 20522 is consistent with the cross-sectional outer diameter of the roller shaft pin 2053. A roller hole 20511 is provided at the center of the middle of the roller 2051, and an anti-skid layer is surrounded on the outer edge of the roller 2051. The number of roller shaft pins 2053 is consistent with the number of rollers 2051, and the roller shaft pins 2053 pass through the roller shaft pin holes 20522 and the roller holes 20511 in sequence, so that the roller 2051 is rotatably connected to the roller bracket 2052.

Based on the above embodiment, in a preferred embodiment, at least two roller groups 205 are symmetrically arranged on each chain link 2021, and the roller bracket 2052 spans the shoulder support 20212 and the middle support 20213. In this embodiment, by symmetrically arranging at least two roller groups 205 on each chain link 2021, the number of rollers 2051 can be increased, so that the column can be better supported and reset.

On the basis of the above-mentioned embodiments, in a preferred embodiment, the driving sprocket 203 is an outer rotor motor, including a stator 2031 and an outer rotor 2032 located outside the stator 2031, the outer rotor 2032 surface is provided with a first tooth 2033 that matches the chain assembly 202, and the stator 2031 is fixed in the chain bracket 201 through a chain motor shaft 2035; the driven sprocket 204 is hinged in the chain bracket 201 through a sprocket shaft 2041, and the driven sprocket 204 is provided with a second tooth 2042 that matches the chain assembly 202. In this embodiment, the driving sprocket 203 itself is an outer rotor motor, which can directly drive the chain assembly 202 to rotate, saving more space. In an alternative embodiment, a second drive motor can be additionally provided, and the second drive motor is connected to the driving sprocket 203 to drive the driving sprocket 203 to rotate.

The spacing between two adjacent first teeth 2033 and the spacing between two adjacent second teeth 2042 may be set according to the spacing between two adjacent chain links 2021 , or may be set according to the spacing between two adjacent sprocket shaft pins 20214 .

As shown in Figure 7, the chain bracket 201 includes an axle frame 2011 and a bracket bottom plate 2012. There are four axle frames 2011, each of which is provided with a through chain bracket shaft hole 2013, and the inner diameter of the chain bracket shaft hole 2013 is respectively consistent with the outer diameter of the sprocket shaft 2041 and the chain motor shaft 2035. The bracket bottom plate 2012 is fixedly connected to the root of the axle frame 2011, connecting the chain bracket 201 into a whole. The bracket bottom plate 2012 is fixedly connected to the tray 402 of the second drive assembly 4.

The driven sprocket 204 is cylindrical, and is provided with a second tooth 2042 on the outside to cooperate with the chain assembly 202. The driven sprocket 204 is axially provided with a through sprocket shaft hole 2043, and the aperture of the sprocket shaft hole 2043 is consistent with the outer diameter of the sprocket shaft 2041. The stator 2031 of the outer rotor motor is axially provided with a through chain motor shaft hole 2034, and the aperture of the chain motor shaft hole 2034 is consistent with the outer diameter of the chain motor shaft 2035. The chain motor shaft 2035 is cylindrical, passes through the chain bracket shaft hole 2013, and the chain motor shaft hole 2034 is fixedly connected to the chain bracket shaft hole 2013, and is fixedly connected to the stator 2031. The sprocket shaft 2041 is cylindrical and passes through the sprocket shaft hole 2043 and the chain bracket shaft hole 2013, so that the sprocket shaft 2041 is rotatably connected to the sprocket, or the sprocket shaft 2041 is fixedly connected to the sprocket and rotatably matched with the sprocket bracket shaft hole.

On the basis of the above embodiment, in a preferred embodiment, the housing 1 is provided with a drain port 103. In this embodiment, since there is a gap between the first drive assembly 2 and the auxiliary support 3, water will enter the housing 1 when precipitation occurs, so the drain port 103 is provided to drain the water and prevent the second drive assembly 4 from being damaged by accumulated water.

Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims (10)

1. A supporting and resetting device for a floating object, characterized in that it comprises: Housing (1); A first driving assembly (2) is arranged in the housing (1), comprising a chain bracket (201), a chain assembly (202) arranged in the chain bracket (201), a driving sprocket (203) and a driven sprocket (204) for driving the chain assembly (202) to rotate, the chain assembly (202) comprising a plurality of chain links (2021) and an outer chain plate (2022) for hingedly connecting the chain links (2021) into a chain, each of the chain links (2021) is provided with a roller group (205), each of the roller groups (205) comprises a plurality of rollers (2051), and the axial direction of the rollers (2051) is perpendicular to the axial direction of the driving sprocket (203); Auxiliary supports (3) are symmetrically arranged on both sides of the first driving assembly (2), the auxiliary supports (3) comprising a support portion and an arc-shaped top plate (301) arranged on the top of the support portion, a plurality of ball grooves (3011) are opened on the arc-shaped top plate (301), balls (302) are rollably arranged in the ball grooves (3011), and the top of the balls (302) is flush with the top of the chain assembly (202); The second driving assembly (4) comprises a driving member (401) and a tray (402), wherein the driving member (401) is used to drive the tray (402) to rotate, and the supporting portion and the chain bracket (201) are both fixed on the tray (402). 2. The supporting and resetting device for floating objects according to claim 1, characterized in that the supporting and resetting device for floating objects further comprises: A top ring (5) is fixedly arranged in the outer shell (1), the outer diameter of the top ring (5) is consistent with the inner diameter of the outer shell (1), the auxiliary support (3) is rotatably arranged on the inner side of the top ring (5), and the top ring (5) is suitable for supporting the outer edge of the floating object. 3. The supporting and resetting device for floating objects according to claim 2 is characterized in that the top ring (5) is connected to the arc-shaped top plate (301) through a guiding structure, and the guiding structure is used to guide and limit the rotation of the auxiliary support (3). 4. The supporting and resetting device for floating objects according to claim 3 is characterized in that the guiding structure comprises a guiding groove (501) arranged on the inner side of the top ring (5), and a guiding key (3012) arranged at the arc-shaped edge of the arc-shaped top plate (301), the guiding groove (501) being connected to a mounting notch (502), and the guiding key (3012) being slidably installed in the guiding groove (501) through the mounting notch (502). 5. The supporting and resetting device for floating objects according to any one of claims 1 to 4, characterized in that the supporting portion comprises a bottom horizontal plate (303), a vertical plate (304) vertically arranged on the bottom horizontal plate (303), and a stiffening rib (305) connecting the bottom horizontal plate (303) and the vertical plate (304). 6. The supporting and resetting device for floating objects according to any one of claims 1 to 4 is characterized in that the chain link (2021) includes two symmetrically arranged inner link plates (20211), shoulder supports (20212) respectively fixedly connected to the inner link plates (20211), and a middle support (20213) arranged between the two shoulder supports (20212), one of the outer link plates (2022) is hinged to the adjacent inner link plates (20211), and the middle support (20213) is fixedly connected to the shoulder support (20212) via a sprocket shaft pin (20214). 7. The supporting and resetting device for floating objects according to claim 6 is characterized in that the roller group (205) includes a roller bracket (2052), the roller bracket (2052) is fixedly arranged on the chain link (2021), a roller groove (20521) is arranged in the roller bracket (2052), and the roller (2051) is rotatably arranged in the roller groove (20521) through a roller shaft pin (2053). 8. The supporting and resetting device for floating objects according to claim 7 is characterized in that at least two roller groups (205) are symmetrically arranged on each of the chain links (2021), and the roller bracket (2052) spans over the shoulder support (20212) and the middle support (20213). 9. The supporting and resetting device for floating objects according to any one of claims 1 to 4, characterized in that the driving sprocket (203) is an outer rotor motor, comprising a stator (2031) and an outer rotor (2032) located outside the stator (2031), the surface of the outer rotor (2032) is provided with a first tooth (2033) matched with the chain assembly (202), and the stator (2031) is fixed in the chain bracket (201) through a chain motor shaft (2035); The driven sprocket (204) is hinged in the chain bracket (201) via a sprocket shaft (2041), and the driven sprocket (204) is provided with a second tooth (2042) that cooperates with the chain assembly (202). 10. The supporting and resetting device for a floating object according to any one of claims 1 to 4, characterized in that the housing (1) is provided with a drainage outlet (103).