CN212978201U

CN212978201U - Adjustable micro-nano satellite whole-satellite parking vehicle

Info

Publication number: CN212978201U
Application number: CN202021422329.4U
Authority: CN
Inventors: 丁佳奇; 姜洁华; 顾坚民; 曲晶
Original assignee: Shanghai Geman Technology Co ltd
Current assignee: Shanghai Geman Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-16
Anticipated expiration: 2030-07-17

Abstract

The utility model provides a receive whole star of satellite and park car with adjustable, the on-line screen storage device comprises a base, a machine support, the platform bottom plate, the rotation platform, rotation locking device and lifting device, the frame sets up on the base, platform bottom plate level is arranged in the frame, the vertical rotatable coupling frame of one end of platform bottom plate, the lifting device is installed in the frame and is connected the other end that the other end of platform bottom plate is used for lifting the other end of platform bottom plate, the rotatable setting of rotation platform level is on the platform bottom plate, rotation locking device connects the platform bottom plate respectively and rotates the platform and be used for locking and unblock with the platform bottom plate. The utility model discloses a receive whole star of satellite parking car with adjustable can realize receiving 360 rotations of satellite a little, the adjustment and the assembly of the whole star of being convenient for can unilateral lifting 15 degrees moreover to adjust the barycenter position of receiving the satellite a little, design benefit, the structure is succinct, makes portably, and is with low costs, is suitable for extensive popularization and application.

Description

Adjustable micro-nano satellite whole-satellite parking vehicle

Technical Field

The utility model relates to a satellite assembly technical field, in particular to receive satellite assembly technical field a little, specifically indicate a whole star of satellite parking car is received a little with adjustable.

Background

At present, on the basis of micron and nanometer technologies, the satellite is made to be about 100kg or less than 100kg by means of brand new design ideas and concepts, namely higher three-dimensional integration, modularization and functional software, and by means of technologies such as system miniaturization, light weight, low power consumption and the like with the core of improving 'functional density', so that the so-called micro/nano (micro/nano) satellite is formed.

The research of the micro-nano satellite technology and the networking application technology thereof are one of the hotspots of the research of the international satellite technology, and belong to the category of high and new technology exploration. The micro-nano satellite is mainly applied to the aspects of communication, military affairs, geological exploration, environment and disaster monitoring, traffic and transportation, meteorological service, scientific experiments, deep space exploration and the like.

In the micro-nano satellite assembling process, a parking platform is needed to provide supporting force for the micro-nano satellite, and the parking platform can rotate 360 degrees, so that the micro-nano satellite can rotate 360 degrees, adjustment and assembly of the whole satellite are facilitated, and the parking platform can be lifted by 15 degrees on one side so as to adjust the mass center position of the micro-nano satellite.

Therefore, it is desirable to provide an adjustable micro-nano satellite whole satellite parking vehicle, which can realize the rotation of the micro-nano satellite by 360 degrees, is convenient for the adjustment and assembly of the whole satellite, and can be lifted by 15 degrees on one side so as to adjust the centroid position of the micro-nano satellite.

SUMMERY OF THE UTILITY MODEL

In order to overcome the shortcoming among the above-mentioned prior art, an object of the utility model is to provide a receive whole star of satellite and park car with adjustable, it can realize receiving satellite 360 rotations a little, is convenient for adjust and the assembly of whole star, can unilateral lifting 15 degrees moreover to the barycenter position of satellite is received a little in the adjustment, is suitable for extensive popularization and application.

Another object of the utility model is to provide a receive whole star of satellite parking car of a little with adjustable, its design benefit, the structure is succinct, makes portably, and is with low costs, is suitable for extensive popularization and application.

In order to achieve the above object, the utility model discloses a whole star of satellite parking car is received to micro-nano with adjustable, its characteristics are, including base, frame, platform bottom plate, rotation platform, rotation locking device and lifting device, wherein:

the frame sets up on the base, platform bottom plate level is arranged in the frame, the vertical rotatable coupling of one end of platform bottom plate the frame, the lifting device is installed in the frame and connect the other end of platform bottom plate is used for the lifting the other end of platform bottom plate, the rotatable setting of rotation platform level is in on the platform bottom plate, it connects respectively to rotate locking device the platform bottom plate with rotation platform be used for with platform bottom plate with rotation platform locking and unblock.

Preferably, the rotation locking device comprises a brake seat, a locking handle, an eccentric shaft and a brake block, the brake seat is arranged on the platform bottom plate, the eccentric shaft is vertically arranged, the lower end of the eccentric shaft is arranged in the brake seat in a penetrating manner, the eccentric shaft is horizontally and rotatably arranged relative to the brake seat, one end of the brake block is abutted against the side face of the bottom of the rotation platform, the other end of the brake block is arranged on the brake seat in a penetrating manner and sleeved on the lower end of the eccentric shaft, the upper end of the eccentric shaft is arranged on the brake seat, and one end of the locking handle is connected with the upper end of the eccentric shaft and used for horizontally rotating the eccentric shaft.

Preferably, the adjustable micro-nano satellite whole satellite parking vehicle further comprises a pointer and 360-degree annular scale marks, the 360-degree annular scale marks are sleeved on the side face of the bottom of the rotating platform, and the pointer is vertically arranged at a position, close to the platform bottom plate, of the bottom of the rotating platform and used for indicating the position of the 360-degree annular scale marks.

Preferably, the adjustable micro-nano satellite whole satellite parking vehicle further comprises a rotating bearing, the rotating bearing is arranged on the platform bottom plate, and the rotating platform is arranged on the rotating bearing.

Preferably, the lifting device includes swing base, turbine case, lifting handle, transmission shaft, turbine, lead screw, lift piece and lift support arm, wherein:

the swing base is arranged on the rack, the turbine box is arranged on the swing base, the screw rod is vertically arranged below the other end of the platform bottom plate, the lifting part is sleeved on and in threaded engagement with the upper end of the screw rod, the lifting support arm is vertically arranged and positioned below the other end of the platform bottom plate, the upper end of the lifting support arm is connected with the other end of the platform bottom plate, the lower end of the lifting support arm is connected with the lifting part, the lower end of the screw rod is arranged in the turbine box in a penetrating manner and can be horizontally and rotatably arranged relative to the turbine box, the turbine is positioned in the turbine box, one end of the lifting handle connected with the transmission shaft is used for rotating the transmission shaft, the other end of the transmission shaft is arranged in the turbine box in a penetrating manner and can be rotatably arranged relative to the turbine box around the axis, the other end of the transmission shaft is connected with the lower end of the screw rod through the turbine and is used for horizontally rotating the lower end of the screw rod.

Preferably, the lifting support arm is an inverted U-shaped support arm, the upper end of the inverted U-shaped support arm is connected to the other end of the platform base plate, and the lifting member is located between the lower ends of the inverted U-shaped support arms and connected to the lower ends of the inverted U-shaped support arms.

Preferably, the swing base includes fixing base and swing seat, the fixing base is fixed on the frame, the swing seat can swing the setting on the fixing base, the turbine case sets up on the swing seat.

Preferably, the adjustable micro-nano satellite whole satellite parking vehicle further comprises angle scale marks, the angle scale marks are arranged along the rotating direction of one end of the platform bottom plate, and the upper ends of the angle scale marks are connected with the side face of the platform bottom plate.

Preferably, the adjustable micro-nano satellite whole satellite parking vehicle further comprises a caster and a push-pull handle, the push-pull handle is arranged in an inclined mode, the lower end of the push-pull handle is connected with the base, the upper end of the push-pull handle is far away from the base, and the base is arranged on the caster.

Preferably, the adjustable micro-nano satellite whole satellite parking vehicle further comprises a supporting device, the supporting device comprises a supporting foot, a supporting sleeve, a screw rod and a supporting handle, the supporting sleeve vertically penetrates through the base, the middle of the screw rod vertically penetrates through and is meshed with the supporting sleeve in a threaded manner, the lower end of the screw rod is arranged on the supporting foot, and the supporting handle is connected with the upper end of the screw rod and is used for horizontally rotating the upper end of the screw rod.

The beneficial effects of the utility model mainly lie in:

1. the utility model discloses a whole star of receiving satellite parking car with adjustable receive includes the base, a machine support, the platform bottom plate, the rotation platform, rotation locking device and lifting device, the frame sets up on the base, platform bottom plate level is arranged in the frame, the vertical rotatable coupling frame of one end of platform bottom plate, the other end that lifting device installed in the frame and connected the platform bottom plate is used for the other end of lifting platform bottom plate, the rotatable setting of rotation platform level is on the platform bottom plate, rotation locking device connects the platform bottom plate respectively and rotation platform is used for locking platform bottom plate and rotation platform and unblock, therefore, it can realize receiving satellite 360 rotations of receiving satellite a little, be convenient for adjust star's adjustment and assembly, and can unilateral lifting 15 degrees, so that adjust the barycenter position of receiving satellite a little, be suitable for extensive.

2. The utility model discloses a receive whole star of satellite and park car with adjustable include the base, a machine support, the platform bottom plate, the rotation platform, rotation locking device and lifting device, the frame sets up on the base, platform bottom plate level is arranged in the frame, the vertical rotatable coupling frame of one end of platform bottom plate, the other end that lifting device installed in the frame and connected the platform bottom plate is used for the other end of lifting platform bottom plate, the rotatable setting of rotation platform level is on the platform bottom plate, rotation locking device connects the platform bottom plate respectively and rotates the platform and be used for locking platform bottom plate and rotation platform and unblock, therefore, its design benefit, the structure is succinct, easy and simple to handle, low cost is suitable for extensive popularization and application.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims, wherein like reference numerals refer to corresponding parts throughout the several views, and wherein like reference numerals refer to like parts throughout the several views.

Drawings

Fig. 1 is a first schematic perspective view of a specific embodiment of the adjustable micro-nano satellite whole satellite parking vehicle of the present invention.

FIG. 2 is an enlarged partial schematic view of a second isometric view of the embodiment shown in FIG. 1.

FIG. 3 is an enlarged, partially exploded view of a third perspective view of the embodiment shown in FIG. 1.

FIG. 4 is an enlarged partial schematic view of a fourth isometric view of the embodiment shown in FIG. 1.

FIG. 5 is an enlarged partial schematic view of a fifth isometric view of the exemplary embodiment shown in FIG. 1.

(symbol description)

1, a base; 2, a frame; 3, a platform bottom plate; 4, rotating the platform; 5 rotating the locking device; 6 lifting the device; 7, a brake seat; 8, locking a handle; 9, an eccentric shaft; 10, a brake block; 11, a pointer; a 12360 degree annular scale line; 13 oscillating the base; 14 a turbine case; 15 lifting the handle; 16 drive shafts; 17 supporting a handle; 18 lead screws; 19 a lifting member; 20 lifting the support arm; 21 an inverted U-shaped support arm; 22 lifting flange; 23 fixing the base; 24 a swing seat; 25 degree scale lines; 26 casters; 27 push-pull handles; 28 supporting means; 29 support legs; 30 a support sleeve; 31 screw.

Detailed Description

In order to clearly understand the technical contents of the present invention, the following embodiments are specifically illustrated in detail.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Please refer to fig. 1-5, in an embodiment of the present invention, the adjustable micro/nano satellite whole satellite parking vehicle comprises a base 1, a frame 2, a platform bottom plate 3, a rotating platform 4, a rotating locking device 5 and a lifting device 6, wherein:

frame 2 sets up on the base 1, platform bottom plate 3 level is arranged in on the frame 2, the vertical rotatable coupling of one end of platform bottom plate 3 frame 2, lifting device 6 is installed connect in the frame 2 the other end of platform bottom plate 3 is used for the lifting the other end of platform bottom plate 3, the rotatable setting of rotation platform 4 level is in on the platform bottom plate 3, rotation locking device 5 is connected respectively platform bottom plate 3 with rotation platform 4 is used for with platform bottom plate 3 with rotation platform 4 locks and the unblock.

The rotational locking means 5 may have any suitable construction, see figures 1-4, in a specific embodiment of the present invention, the rotation locking device 5 comprises a brake base 7, a locking handle 8, an eccentric shaft 9 and a brake block 10, the brake seat 7 is arranged on the platform bottom plate 3, the eccentric shaft 9 is vertically arranged, the lower end of the eccentric shaft 9 is arranged in the brake seat 7 in a penetrating way, the eccentric shaft 9 is horizontally and rotatably arranged relative to the brake base 7, one end of the brake block 10 abuts against the side surface of the bottom of the rotating platform 4, the other end of the brake block 10 penetrates through the brake seat 7 and is sleeved on the lower end of the eccentric shaft 9, the upper end of the eccentric shaft 9 is positioned on the brake base 7, and one end of the locking handle 8 is connected with the upper end of the eccentric shaft 9 and used for horizontally rotating the eccentric shaft 9. The eccentric shaft 9 is horizontally rotated by applying force to the locking handle 8, so that the brake block 10 is driven to horizontally rotate, and the brake block 10 moves towards or away from the rotating platform 4 under the influence of the rotation of the eccentric shaft 9, so that the locking and releasing functions are realized.

For the convenience of the clarity of the rotation angle of the rotating platform 4, please refer to fig. 1-2 and 4, in a specific embodiment of the present invention, the adjustable micro-nano satellite whole satellite parking vehicle further includes a pointer 11 and 360-degree annular scale marks 12, the 360-degree annular scale marks 12 are sleeved on the side surface of the bottom of the rotating platform 4, and the pointer 11 is vertically disposed on the platform bottom plate 3 adjacent to the position of the bottom of the rotating platform 4 and used for indicating the position of the 360-degree annular scale marks 12. According to the positions of the 360-degree annular scale marks 12 before and after the rotation of the rotating platform 4 pointed by the pointer 11, the rotation angle of the rotating platform 4 can be accurately known.

Rotatable setting of rotating platform 4 level can adopt any suitable structure on the platform bottom plate 3 the utility model discloses a specific embodiment, the whole star of the adjustable little satellite of receiving still includes rolling bearing (not shown in the figure), rolling bearing sets up on the platform bottom plate 3, rotating platform 4 sets up rolling bearing is last.

The lifting device 6 may have any suitable configuration, as shown in fig. 1-2 and 4, and in an embodiment of the present invention, the lifting device 6 includes a swing base 13, a turbine box 14, a lifting handle 15, a transmission shaft 16, a turbine (not shown), a screw 18, a lifting member 19 and a lifting support arm 20, wherein:

the swing base 13 is arranged on the frame 2, the turbine box 14 is arranged on the swing base 13, the screw rod 18 is vertically arranged below the other end of the platform bottom plate 3, the lifting piece 19 is sleeved on and in threaded engagement with the upper end of the screw rod 18, the lifting support arm 20 is vertically arranged and positioned below the other end of the platform bottom plate 3, the upper end of the lifting support arm 20 is connected with the other end of the platform bottom plate 3, the lower end of the lifting support arm 20 is connected with the lifting piece 19, the lower end of the screw rod 18 is arranged in the turbine box 14 in a penetrating manner and can horizontally rotate relative to the turbine box 14, the turbine is arranged in the turbine box 14, the lifting handle 15 is connected with one end of the transmission shaft 16 and is used for rotating the transmission shaft 16, the other end of the transmission shaft 16 is arranged in the turbine box 14 in a penetrating manner and can rotate relative to the turbine box 14 around the axis of the transmission shaft 16, the other end of the transmission shaft 16 is connected with the lower end of the screw rod 18 through the turbine for horizontally rotating the lower end of the screw rod 18.

During operation, through application of force in lifting handle 15 rotates transmission shaft 16 drives the worm wheel rotates, the turbine drives 18 horizontal rotations of lead screw, through swing base 13 angle of adjustment, lifting member 19 is in can reciprocate on the lead screw 18, realize the unilateral lifting of platform bottom plate 3 or descend. The lifting process of the worm wheel screw rod structure is stable and has self-locking performance, and when the lead angle of the screw rod 18 is smaller than the equivalent friction angle between the meshing teeth, the worm wheel screw rod structure has self-locking performance and can realize reverse self-locking.

The lifting support arm 20 may have any suitable shape, as shown in fig. 1-2 and 4, in an embodiment of the present invention, the lifting support arm 20 is an inverted U-shaped support arm 21, the upper end of the inverted U-shaped support arm 21 is connected to the other end of the platform bottom plate 3, and the lifting member 19 is located between the lower ends of the inverted U-shaped support arms 21 and is connected to the lower end of the inverted U-shaped support arm 21.

The lifting member 19 may be any suitable component, and in one embodiment of the invention, the lifting member 19 is a lifting flange 22, as shown in fig. 4.

The swing base 13 may have any suitable structure, as shown in fig. 1 and 4, in an embodiment of the present invention, the swing base 13 includes a fixing seat 23 and a swing seat 24, the fixing seat 23 is fixed on the frame 2, the swing seat 24 is swingably disposed on the fixing seat 23, and the turbine box 14 is disposed on the swing seat 24. Preferably, the swing seat 24 may be vertically and rotatably disposed relative to the fixed seat 23 through a rotating shaft, and the rotating shaft is parallel to the rotating shaft at one end of the platform bottom plate 3.

For the sake of clarity the lifting angle of the other end of the platform bottom plate 3, please refer to fig. 1-2, in an embodiment of the present invention, the adjustable micro-nano satellite whole satellite parking vehicle further includes an angle scale mark 25, the angle scale mark 25 is arranged along the rotation direction of one end of the platform bottom plate 3, and the upper end of the angle scale mark 25 is connected to the side of the platform bottom plate 3. The lifting angle of the other end of the platform bottom plate 3 can be accurately known through the relative position of the angle scale lines 25 relative to the rack 2 before and after the other end of the platform bottom plate 3 is lifted.

In order to facilitate the movement of the present invention, please refer to fig. 1 and 5, in an embodiment of the present invention, the adjustable micro nano satellite whole satellite parking vehicle further includes a caster 26 and a push-pull handle 27, the push-pull handle 27 is inclined, the lower end of the push-pull handle 27 is connected to the base 1, the upper end of the push-pull handle 27 is far away from the base 1, and the base 1 is disposed on the caster 26.

The number of the casters 26 can be determined as required, and in a specific embodiment of the present invention, the number of the casters 26 is 4, and 4 of the casters 26 are distributed at 4 corners of a rectangle.

For the convenience is removing the utility model discloses the after-fixing the utility model discloses, please see that fig. 1 and fig. 5 are shown the utility model discloses a in a concrete embodiment, the whole star of satellite parking car is received to adjustable micronano satellite still includes strutting arrangement 28, strutting arrangement 28 includes spike 29, support sleeve 30, screw rod 31 and support handle 17, support sleeve 30 is vertical wears to establish base 1, the vertical wearing to establish and the thread engagement in middle part of screw rod 31 support sleeve 30, the lower extreme setting of screw rod 31 is in on the spike 29, support handle 17 connects the upper end of screw rod 31 is used for the level to rotate the upper end of screw rod 31. The supporting feet 29 move up and down by applying force to the supporting handle 17 and horizontally rotating the screw rod 31, and when the height of the supporting feet 29 is lower than that of the caster 26, a supporting function can be realized.

The number of the supporting devices 28 can be determined as required, and in a specific embodiment of the present invention, the number of the supporting devices 28 is 4, and 4 supporting devices 28 are distributed at 4 corners of a rectangle.

When the micro-nano satellite adjusting device is used, force is applied to the push-pull handle 27 to push and pull, the micro-nano satellite adjusting device is moved to a proper position through the trundles 26, the base 1 is supported and fixed through the supporting device 28, the micro-nano satellite is fixed on the rotating platform 4 (the micro-nano satellite fixing position is arranged on the rotating platform 4), the micro-nano satellite is horizontally rotated through the rotating platform 4, and after the micro-nano satellite is rotated by a proper angle, the rotating platform 4 is locked through the rotating locking device 5, so that the adjustment and the assembly of the whole satellite are facilitated; the platform bottom plate 3 is lifted by a proper angle through the lifting device 6 so as to adjust the position of the mass center of the micro-nano satellite.

Therefore, by adopting the utility model, the micro-nano satellite can horizontally rotate at any angle within 360 degrees through the rotating platform and can be locked at the required angle, thereby facilitating the adjustment and assembly of the whole satellite; the lifting device can realize the functions of unilateral lifting and locking at any angle within 0-15 degrees so as to adjust the mass center position of the micro-nano satellite; the casters are matched with the push-pull handle to realize the movement of the parking vehicle in any direction; the complementary design of the caster and the supporting device is convenient for moving and stable fixation; simple structure, convenient operation and low cost.

To sum up, the utility model discloses a receive whole star of satellite parking car with adjustable can realize receiving 360 rotations of satellite a little, the adjustment and the assembly of the whole star of being convenient for can unilateral lifting 15 degrees moreover to the barycenter position of satellite is received a little in the adjustment, design benefit, the structure is succinct, makes portably, and is with low costs, is suitable for extensive popularization and application.

Therefore, the purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments may be modified without departing from the principles. Therefore, the present invention includes all modifications within the spirit and scope of the appended claims.

Claims

1. The utility model provides a whole star of micro nano satellite parks car with adjustable which characterized in that, includes base, frame, platform bottom plate, rotating platform, rotates locking device and lifting device, wherein:

2. The adjustable micro-nano satellite whole satellite parking vehicle as claimed in claim 1, wherein the rotation locking device comprises a brake base, a locking handle, an eccentric shaft and a brake block, the brake base is arranged on the platform bottom plate, the eccentric shaft is vertically arranged, the lower end of the eccentric shaft penetrates through the brake base, the eccentric shaft is rotatably arranged relative to the brake base, one end of the brake block abuts against the side face of the bottom of the rotation platform, the other end of the brake block penetrates through the brake base and is sleeved on the lower end of the eccentric shaft, the upper end of the eccentric shaft is located on the brake base, and one end of the locking handle is connected with the upper end of the eccentric shaft and is used for horizontally rotating the eccentric shaft.

3. The adjustable micro-nano satellite whole satellite parking vehicle according to claim 1, further comprising a pointer and 360-degree annular scale marks, wherein the 360-degree annular scale marks are sleeved on the side face of the bottom of the rotating platform, and the pointer is vertically arranged at a position, close to the bottom of the rotating platform, of the platform bottom plate and used for indicating the position of the 360-degree annular scale marks.

4. The adjustable micro-nano satellite whole-satellite parking vehicle according to claim 1, further comprising a rotating bearing, wherein the rotating bearing is arranged on the platform bottom plate, and the rotating platform is arranged on the rotating bearing.

5. The adjustable micro-nano satellite whole satellite parking vehicle according to claim 1, wherein the lifting device comprises a swing base, a turbine box, a lifting handle, a transmission shaft, a turbine, a screw rod, a lifting piece and a lifting support arm, wherein:

6. The adjustable micro-nano satellite whole satellite parking vehicle according to claim 5, wherein the lifting support arm is an inverted U-shaped support arm, the upper end of the inverted U-shaped support arm is connected with the other end of the platform bottom plate, and the lifting piece is located between the lower ends of the inverted U-shaped support arms and connected with the lower ends of the inverted U-shaped support arms.

7. The adjustable micro-nano satellite whole satellite parking vehicle as claimed in claim 5, wherein the swing base comprises a fixed seat and a swing seat, the fixed seat is fixed on the rack, the swing seat can be arranged on the fixed seat in a swing mode, and the turbine box is arranged on the swing seat.

8. The adjustable micro-nano satellite whole satellite parking vehicle according to claim 1, further comprising angle scale marks, wherein the angle scale marks are arranged along the rotation direction of one end of the platform bottom plate, and the upper ends of the angle scale marks are connected with the side face of the platform bottom plate.

9. The adjustable micro-nano satellite whole-satellite parking vehicle according to claim 1, further comprising casters and a push-pull handle, wherein the push-pull handle is arranged in an inclined manner, the lower end of the push-pull handle is connected with the base, the upper end of the push-pull handle is far away from the base, and the base is arranged on the casters.

10. The adjustable micro-nano satellite whole-satellite parking vehicle according to claim 1, further comprising a supporting device, wherein the supporting device comprises a supporting foot, a supporting sleeve, a screw rod and a supporting handle, the supporting sleeve vertically penetrates through the base, the middle of the screw rod vertically penetrates through the supporting sleeve and is in threaded engagement with the supporting sleeve, the lower end of the screw rod is arranged on the supporting foot, and the supporting handle is connected with the upper end of the screw rod and is used for horizontally rotating the upper end of the screw rod.