CN219771643U - Multifunctional lifting equipment - Google Patents

Abstract

The utility model relates to the technical field of rocket assembly, in particular to a multifunctional lifting device. The multifunctional lifting equipment comprises a carrier base, a moving platform, a bottom plate, a base plate and a cover plate, wherein the moving platform is assembled at the upper end of the carrier base, the bottom plate is horizontally assembled at the upper end of the moving platform, the moving platform is used for driving the bottom plate to lift up and down and horizontally move, the base plate is horizontally rotatably assembled at the upper end of the bottom plate, the bottom of the cover plate is rotatably assembled at the upper end of the base plate through a universal ball connecting piece, and an angle adjusting component connected with the base plate is arranged on the cover plate and is used for adjusting the inclination angle of the cover plate relative to the base plate. The advantages are that: the structure design is reasonable, the butt joint installation work of the engine and the arrow body can be guaranteed to be reliably and orderly implemented, the working efficiency is effectively improved, and the manufacturing and maintenance cost is reduced.

Description

Multifunctional lifting equipment

Technical Field

The utility model relates to the technical field of rocket assembly, in particular to a multifunctional lifting device.

Background

When the traditional rocket engine is in butt joint with the rocket body, a fixed tower or a forklift is generally adopted for assisting in installation. The method has the disadvantages of larger volume, high manufacturing cost, low production efficiency, poor maneuverability and weak operability.

Therefore, there is a need to develop a new rocket engine assembly fixture.

Disclosure of Invention

The utility model aims to provide multifunctional lifting equipment, which effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows:

the utility model provides a multi-functional jacking equipment, including carrier base, moving platform, bottom plate, backing plate and apron, above-mentioned moving platform assembles in above-mentioned carrier base upper end, above-mentioned bottom plate level assembly is in above-mentioned moving platform upper end, above-mentioned moving platform is used for driving above-mentioned bottom plate oscilaltion and horizontal migration, but above-mentioned backing plate horizontally rotatable assembly is in above-mentioned bottom plate upper end, the rotatable assembly of above-mentioned backing plate upper end of passing through of universal ball connecting piece in above-mentioned apron bottom, the above-mentioned apron is equipped with the angle adjustment subassembly of being connected with above-mentioned backing plate, the inclination of above-mentioned angle adjustment subassembly for adjusting above-mentioned apron for above-mentioned backing plate.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the carrier base comprises a carrier frame and a plurality of travelling wheels, and the travelling wheels are assembled at the lower end of the carrier frame at intervals.

Further, a plurality of supporting legs are arranged at the lower end of the carrier frame, a plurality of connecting rods are installed on the carrier frame in a threaded mode, the connecting rods are connected with the supporting legs in a one-to-one correspondence mode, and hand wheels used for driving the connecting rods to rotate are arranged at the upper ends of the connecting rods respectively.

Further, the mobile platform comprises a lifting platform, a side-moving platform, a lifting system and a side-moving system, wherein the lifting platform is horizontally arranged, the lifting system is assembled at the upper end of the carrier base, the side-moving platform is horizontally arranged, the side-moving system is assembled at the upper end of the lifting platform, and the bottom plate is assembled at the upper end of the side-moving platform.

Further, the lifting system comprises a motor, a first corner device, two second corner devices and four worm and gear lifters which are respectively assembled at the upper end of the carrier base, wherein the first corner devices and the two second corner devices are distributed at intervals, the two second corner devices are distributed at two sides of the first corner devices, input shafts of the two second corner devices are respectively in transmission connection with two output shafts of the first corner devices through shafts, output shafts of the motor are in transmission connection with input shafts of the first corner devices, input shafts of the two worm and gear lifters are respectively in transmission connection with one output shaft of the two second corner devices in one-to-one correspondence, input shafts of the other two worm and gear lifters are respectively in transmission connection with the other output shaft of the two second corner devices in one-to-one correspondence through shafts, and lifting screws of the four worm and gear lifters respectively vertically extend through screw holes matched on the moving platform and are in threaded connection with each other.

Further, the side shifting system comprises four groups of side shifting mechanisms, the four groups of side shifting mechanisms are distributed in a matrix, each side shifting mechanism comprises a transverse track, a longitudinal track, a transverse screw rod and a longitudinal screw rod, a hollowed-out area extending towards two ends of each transverse track is arranged in the middle of each transverse track, each transverse screw rod horizontally penetrates through two ends of each transverse track, transverse nuts are screwed on each transverse screw rod, each transverse nut is located in a hollowed-out area in the middle of each transverse track, a sliding block connected with each transverse nut is slidably assembled on each transverse track, each longitudinal track is assembled at the upper end of each sliding block, hollowed-out area extending towards two ends of each longitudinal track is arranged in the middle of each longitudinal track, each longitudinal screw rod horizontally penetrates through two ends of each longitudinal track, each longitudinal screw rod is screwed with a longitudinal nut, each longitudinal nut is located in each hollowed-out area in the middle of each longitudinal track, each longitudinal screw rod is fixedly connected with the lower end of each bottom plate, each transverse screw rod is perpendicular to each longitudinal screw rod, and one end of each transverse screw rod and each longitudinal screw rod is respectively provided with a mechanical knob.

Further, the universal ball connecting piece comprises a hemispherical rotating piece, the plane end of the rotating piece faces upwards and is mutually attached and fixed with the middle part of the lower end of the cover plate, a spherical groove for accommodating the rotating piece is formed in the middle part of the upper end of the base plate, the rotating piece is embedded in the spherical groove, a sunken ball socket is arranged in the middle part of the upper end of the base plate, a limiting groove corresponding to the ball socket is formed in the lower end of the base plate, a channel vertically penetrating the ball socket and the limiting groove is formed between the ball socket and the limiting groove, the ball top of the rotating piece is embedded in the ball socket, a connecting column penetrating the channel is arranged at the ball top of the rotating piece, a limiting block is arranged in the limiting groove, the limiting block is fixedly connected with the lower end of the connecting column, and the rotating piece can rotate along the spherical groove and the ball socket.

Further, the angle adjustment includes a plurality of positioning bolts, a plurality of groups of the positioning bolts are respectively assembled on the cover plate by uniformly spaced threads, the plurality of groups of the positioning bolts are centered on the rotating member and are circumferentially and alternately distributed at the edge of the cover plate, and the positioning bolts are abutted against the upper end of the backing plate.

Further, the upper end of the bottom plate is provided with a plurality of lower circular ring grooves coaxially arranged around the ball socket, the lower end of the backing plate is provided with a plurality of upper circular ring grooves corresponding to the lower circular ring grooves one by one, the longitudinal sections of the lower circular ring grooves and the upper circular ring grooves are semicircular, and a plurality of balls are embedded in the lower circular ring grooves and the corresponding upper circular ring grooves.

Further, the pad is a circular plate, an extension part near the edge of the pad is arranged on the bottom plate, a locking bolt transversely penetrating through the extension part is arranged on the extension part, and the locking bolt is used for screwing into the pad to prop against or separate from the edge of the pad.

The beneficial effects of the utility model are as follows: the structure design is reasonable, the butt joint installation work of the engine and the arrow body can be guaranteed to be reliably and orderly implemented, the working efficiency is effectively improved, and the manufacturing and maintenance cost is reduced.

Drawings

Fig. 1 is a schematic structural view of a multifunctional lifting device of the present utility model;

FIG. 2 is a state diagram of the use of the multifunctional lifting device of the present utility model;

FIG. 3 is a schematic view of a carrier base in the multi-functional lifting device of the present utility model;

FIG. 4 is a structural diagram of a lifting system in the multi-functional lifting apparatus of the present utility model;

FIG. 5 is a schematic diagram of a side shifting system in a multi-function lift device of the present utility model;

FIG. 6 is a cross-sectional view of the base plate, pad and cover plate of the multi-function lift device of the present utility model mated;

fig. 7 is a partial cross-sectional view of the cooperation of the base plate, the pad plate and the cover plate in the multi-functional lifting apparatus of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a carrier base; 2. a mobile platform; 3. a bottom plate; 4. a backing plate; 5. a cover plate; 6. a universal ball connector; 7. an angle adjustment assembly; 8. a ball; 11. a carrier rack; 12. a walking wheel; 13. a hand wheel; 21. a lifting platform; 22. a side-shifting platform; 24. a side shifting mechanism; 31. a ball socket; 32. a limit groove; 41. a spherical groove; 42. a locking bolt; 43. a handle; 71. positioning bolts; 231. a motor; 232. a first corner connector; 233. a second corner device; 234. a worm gear lifter; 241. a transverse track; 242. a longitudinal rail; 243. a transverse screw rod; 244. a longitudinal screw rod; 245. a slide block; 611. a connecting column; 612. and a limiting block.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Examples: as shown in fig. 1 and 2, the multifunctional lifting device of the present embodiment includes a carrier base 1, a moving platform 2, a bottom plate 3, a base plate 4 and a cover plate 5, wherein the moving platform 2 is assembled at the upper end of the carrier base 1, the bottom plate 3 is horizontally assembled at the upper end of the moving platform 2, the moving platform 2 is used for driving the bottom plate 3 to lift up and down and horizontally move, the base plate 4 is horizontally rotatably assembled at the upper end of the bottom plate 3, the bottom of the cover plate 5 is rotatably assembled at the upper end of the base plate 4 through a universal ball connector 6, an angle adjusting assembly 7 connected with the base plate 4 is arranged on the cover plate 5, and the angle adjusting assembly 7 is used for adjusting the inclination angle of the cover plate 5 relative to the base plate 4.

When in use, the engine is firstly arranged on the cover plate 5, and the whole device is moved to the bottom of the rocket body. The movable platform 2 is operated to move, so that the bottom plate 3, the base plate 4 and the cover plate 5 are driven to rise and fall, the engine is slowly lifted, and the operation is stopped when the engine reaches a proper height;

when the arrow is installed by the engine, the operation pad 4 rotates in the horizontal plane relative to the bottom plate 3 because the angular position needs to be adjusted, and the operation is stopped after the rotation is in place;

when the horizontal position of the engine is different from the arrow body mounting position and the inclination angle of the cover plate 5 is required, the inclination angle of the cover plate 5 relative to the backing plate 4 (the universal ball connector 6 rotates relative to the backing plate 4 in the adjusting process) is adjusted and maintained through the angle adjusting assembly 7. The whole equipment has reasonable structural design, can ensure reliable and orderly implementation of the butt joint installation work of the engine and the arrow body, effectively improves the working efficiency, and reduces the manufacturing and maintenance cost.

In this embodiment, as shown in fig. 3, the carrier base 1 includes a carrier frame 11 and a plurality of traveling wheels 12, and the traveling wheels 12 are installed at a lower end of the carrier frame 11 at intervals. The carrier frame 11 adopts a cuboid hollow frame structure, the travelling wheels 12 adopt universal wheels, four are generally designed, and the four universal wheels are assembled at four right angles at the lower end of the cuboid carrier frame 11.

As a preferred embodiment, the carrier frame 11 has a plurality of supporting legs at a lower end thereof, the carrier frame 11 is screw-mounted with a plurality of connecting rods, the plurality of connecting rods are connected to the plurality of supporting legs in one-to-one correspondence, and hand wheels 13 for driving the plurality of connecting rods to rotate are provided at upper ends of the plurality of connecting rods, respectively.

In the above embodiment, after the carrier base 1 is moved, the supporting leg is screwed down to move against the ground by rotating the hand wheel 13, and the whole carrier base 1 is stably supported on the ground by the supporting leg against the ground, so that the carrier base cannot easily move, and when the carrier base needs to be moved, the hand wheel 13 is operated to rotate to drive the supporting leg to be screwed up to leave the ground.

As a preferred embodiment, the moving platform 2 includes a lifting platform 21, a side moving platform 22, a lifting system and a side moving system, wherein the lifting platform 21 is horizontally disposed and is mounted on the upper end of the carrier base 1 by the lifting system, the side moving platform 22 is horizontally disposed and is mounted on the upper end of the lifting platform 21 by the side moving system, and the bottom plate 3 is mounted on the upper end of the side moving platform 22.

In the above embodiment, the lifting platform 21 and the lateral movement platform 22 thereon are driven by the lifting system to lift up and down, so as to adjust the height of the cover plate 5, and then the lateral movement system is matched to adjust the position of the lateral movement platform 22 relative to the horizontal direction of the lifting platform 21, so that the cover plate 5 moves horizontally, and the two moving modes are matched with each other, so that the engine on the cover plate 5 can move and be aligned with the rocket body accurately, and the follow-up accurate assembly is facilitated.

In this embodiment, the lifting platform 21 and the side-moving platform 22 are rectangular platforms, and the long side and the wide side correspond to each other.

As a preferred embodiment, as shown in fig. 4, the lifting system includes a motor 231, a first corner device 232, two second corner devices 233 and four worm lifters 234 respectively mounted at the upper end of the carrier base 1, the first corner device 232 and the two second corner devices 233 are spaced apart, the two second corner devices 233 are distributed at both sides of the first corner device 232, input shafts of the two second corner devices 233 are respectively connected with two output shafts of the first corner device 232 through shafts in a transmission manner, output shafts of the motor 231 are connected with input shafts of the first corner device 232 in a transmission manner, the input shafts of the two worm gear lifters 234 are respectively in one-to-one correspondence with one output shaft of the two second corner devices 233, the input shafts of the other two worm gear lifters 234 are respectively in one-to-one correspondence with the other output shaft of the two second corner devices 233, and the lifting screws of the four worm gear lifters 234 respectively vertically extend and pass through the screw holes (specifically, the screw holes formed in the lifting platform 21) adapted on the movable platform 2 and are mutually in threaded connection.

In the above embodiment, the motor 231 is a manual and electric motor (belonging to the prior art), and when the height of the large size is adjusted, the motor 231 is used to electrically drive the input shaft of the first corner device 232 to rotate, so that power is transmitted to the two output shafts (and power is commutated to output through the two output shafts), and is respectively transmitted to the input shafts of the two second corner devices 233, and the input shafts of the two second corner devices 233 respectively transmit power to the two output shafts, and finally transmit power to the input shafts of the four worm and gear lifters 234 synchronously, so that the rotation of the lifting screws of the four worm and gear lifters 234 is realized.

In the present embodiment, four worm gear lifters 234 are distributed at four right angles to the same rectangle, ensuring stable lifting of the moving platform 2.

As a preferred embodiment, as shown in fig. 5, the side shifting system includes four sets of side shifting mechanisms 24, the four sets of side shifting mechanisms 24 are distributed in a matrix, the side shifting mechanisms 24 each include a transverse rail 241, a longitudinal rail 242, a transverse screw 243 and a longitudinal screw 244, a hollowed-out area extending toward two ends of the transverse rail 241 is provided in the middle of the transverse rail 241, the transverse screw 243 horizontally penetrates through two ends of the transverse rail 241, a transverse nut is screwed on the transverse screw 243, the transverse nut is located in the hollowed-out area in the middle of the transverse rail 241, a slider 245 connected with the transverse nut is slidably mounted on the transverse rail 241, the longitudinal rail 242 is mounted on an upper end of the slider 245, a hollowed-out area extending toward two ends of the longitudinal rail 242 is provided in the middle of the longitudinal rail 242, a longitudinal nut is screwed on the longitudinal screw 244 and is located in the hollowed-out area in the middle of the longitudinal rail 242, the longitudinal nut is fixed to the lower end of the base plate 3, and the longitudinal screw 243 is fixed to the longitudinal screw 243, and the longitudinal screw 244 is perpendicular to the longitudinal screw 243.

In the above embodiment, the four sets of side shifting mechanisms 24 are identical in structure, and the two ends of the four transverse rails 241 are identical in extending direction, and the two ends of the four longitudinal rails 242 are identical in extending direction, and in operation, the mechanical knobs at one ends of the four transverse screw rods 243 can be synchronously rotated, so that the four transverse nuts carry the four sliding blocks 245 and the longitudinal rails 242 to translate relative to the length direction of the transverse screw rods 243, and the mechanical knobs at one ends of the four longitudinal screw rods 244 can also be synchronously rotated, so that the four longitudinal nuts carry the bottom plate 3, the backing plate 4, the cover plate 5 and the engine above to translate in two mutually perpendicular horizontal directions (which can be defined as moving in the X direction and the Y direction), thereby accurately adjusting the horizontal displacement of the engine.

In the above embodiment, the device may further include two sets of side shifting mechanisms 24 and two sets of sliding components, the two sets of side shifting mechanisms 24 and the two sets of sliding components are distributed in a matrix, and the two sets of side shifting mechanisms 24 are adjacent, each side shifting mechanism 24 includes a transverse rail 241, a longitudinal rail 242, a transverse screw 243, and a longitudinal screw 244, a hollowed area extending toward two ends of the transverse rail 241 is provided in the middle of the transverse rail 241, the transverse screw 243 horizontally penetrates two ends of the transverse rail 241, a transverse nut is screwed on the transverse screw 243, the transverse nut is located in the hollowed area in the middle of the transverse rail 241, a slider 245 connected with the transverse nut is slidingly mounted on the transverse rail 241, the longitudinal rail 242 is mounted on an upper end of the slider 245, a hollowed area extending toward two ends of the longitudinal rail 242 is provided in the middle of the longitudinal rail 242, a longitudinal nut is screwed on the longitudinal screw 244, the longitudinal nut is located in the hollowed area in the middle of the longitudinal rail 242, the lower end of the longitudinal screw 243 is connected with the longitudinal screw 244, and the longitudinal screw 243 is perpendicular to the lower end of the longitudinal rail 243. The two groups of sliding components comprise a fixed seat and a sliding seat, the fixed seat is assembled at the upper end of the lifting platform 21, the sliding seat is slidably assembled at the upper end of the corresponding fixed seat, a sliding block is slidably installed in the sliding seat and is connected with the lower end of the side-moving platform 22, and the sliding direction of the sliding block relative to the sliding seat is mutually perpendicular to the sliding direction of the sliding seat relative to the fixed seat. The purpose of this design is: the translation of the side shift platform 22 can be achieved by only operating the rotation of the longitudinal screw 244 and the transverse screw 243 of the two side shift mechanisms 24, and the two sets of sliding components move along with the side shift platform 22 along with the adjustment of the side shift mechanisms 24.

As a preferred embodiment, as shown in fig. 6, the universal ball connector 6 includes a hemispherical rotating member, the planar end of the rotating member faces upward and is adhered to and fixed to the middle part of the lower end of the cover plate 5, a spherical groove 41 for accommodating the rotating member is formed in the middle part of the upper end of the pad plate 4, the rotating member is engaged in the spherical groove 41, a concave ball socket 31 is formed in the middle part of the upper end of the base plate 3, a limit groove 32 corresponding to the ball socket 31 is formed in the lower end of the base plate 3, a channel vertically penetrating the ball socket 31 and the limit groove 32 is formed between the ball socket 31 and the limit groove 32, a connection post 611 penetrating the channel is formed at the ball top of the rotating member, a limit block 612 is formed in the limit groove 32, the limit block 612 is fixedly connected to the lower end of the connection post 611, and the rotating member can rotate along the spherical grooves 41 and 31.

In the above embodiment, the lower half of the rotating member is fitted in the spherical groove 41 of the prefabricated shape, which can be rotated by a certain angle in a range of 360 ° along the spherical groove 41, while at the same time, the bottom of the rotating member is also rotated along the ball socket 31 during rotation, and since the connection post 611 passes through the passage (with a gap therebetween, it is ensured that the connection post 611 has a displacement margin of a certain deflection along with the movement of the rotating member in the passage), and the lower end of the passage is connected with the lower end of the connection post 611 by providing the stopper 612 so that the connection post 611 does not come off the passage, so that the entire rotating member has a rotating angle margin while being assembled with the base plate 3, that is, so that the cover plate 5 can be rotated by a certain angle (inclination angle) with respect to the backing plate 4 and the base plate 3, the adjustment of the engine mounting angle is realized, and the structural design is very simple, reasonable, and the rotating operation is also relatively stable.

In this embodiment, a flange plate flush with the planar end of the rotating member 6 is provided around the planar end, and is attached to the lower end of the cover plate 5 and is fixedly connected to the cover plate 5 by bolts.

In a preferred embodiment, the angle adjusting unit 7 includes a plurality of positioning bolts 71, wherein a plurality of sets of the positioning bolts 71 are respectively and uniformly spaced and screwed on the cover plate 5, the plurality of sets of the positioning bolts 71 are circumferentially spaced apart around the rotating member at intervals on the edge of the cover plate 5, and the lower ends of the positioning bolts 71 are abutted against the upper ends of the backing plates 4.

In the above embodiment, since the plurality of positioning bolts 71 are respectively arranged around the cover plate 5 at intervals, when the inclination angle of the cover plate 5 is required to be adjusted, the plurality of positioning bolts 71 are operated to be screwed downwards or screwed upwards to different heights, the lower ends of the positioning bolts 71 are supported at the upper ends of the backing plates 4, the adjustment of the angle of the cover plate 5 can be realized, and the operation is simple and quick, and only the different vertical screwing heights of the positioning bolts 71 are required to be operated.

In a preferred embodiment, the upper end of the bottom plate 3 is provided with a plurality of lower ring grooves coaxially disposed about the ball socket 31, the lower end of the pad 4 is provided with a plurality of upper ring grooves corresponding to the lower ring grooves one by one, the longitudinal sections of the lower ring grooves and the upper ring grooves are semicircular, and the plurality of balls 8 are fitted in the lower ring grooves and the corresponding upper ring grooves.

In the above embodiment, the two horizontal rotation connection is realized between the base plate 4 and the bottom plate 3 through the balls 8, the friction force of rolling friction is smaller, and the energy consumption is lower.

As a preferred embodiment, as shown in fig. 7, the pad 4 is a circular plate, the base plate 3 is provided with an extension portion (denoted by a in the figure) near the edge of the pad 4, the extension portion is provided with a locking bolt 42 passing through the extension portion transversely, and the locking bolt 42 is used to be screwed into abutment with or separation from the edge of the pad 4.

In the above embodiment, the locking bolt 42 is mainly designed to fix the relative displacement between the bottom plate 3 and the base plate 4, specifically, when the base plate 4 rotates along the circumferential direction to adjust the position of the engine on the cover plate 5, the end of the base plate 4 abuts against the edge of the base plate 4 by screwing in the locking bolt 42, so that the base plate 4 is locked, and the circumferential rotation is not easy to occur, so that the engine cannot be displaced due to the rotation of the base plate 4 caused by external force in the assembly process of the engine. When the adjustment is needed again, the locking bolt 42 is loosened, the base plate 4 is rotated, and after the adjustment, the position of the base plate 4 is fixed through the locking bolt 42.

In this embodiment, the bottom plate 3, the pad plate 4 and the cover plate 5 may be circular plates coaxially disposed.

In this embodiment, a handle 43 for driving the pad 4 to rotate is provided at the edge of the pad 4, specifically, a plurality of handles 43 are provided around the edge of the pad 4, so that the handle 43 can be operated from different directions to drive the pad 4, the cover plate 5 thereon and the engine to rotate in the circumferential direction to adjust the direction of the engine.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. A multifunctional lifting device, characterized in that: including carrier base (1), mobile platform (2), bottom plate (3), backing plate (4) and apron (5), mobile platform (2) assemble carrier base (1) upper end, bottom plate (3) horizontal assembly is in mobile platform (2) upper end, mobile platform (2) are used for driving bottom plate (3) oscilaltion and horizontal migration, but backing plate (4) horizontal rotation's assembly is in bottom plate (3) upper end, apron (5) bottom is in through rotatable assembly of universal ball connecting piece (6) backing plate (4) upper end, be equipped with on apron (5) with angle adjustment subassembly (7) that backing plate (4) are connected, angle adjustment subassembly (7) are used for adjusting apron (5) for the inclination of backing plate (4).

2. A multi-function lifting device according to claim 1, wherein: the carrier base (1) comprises a carrier frame (11) and travelling wheels (12), wherein a plurality of travelling wheels (12) are arranged and are assembled at the lower end of the carrier frame (11) at intervals.

3. A multi-function lifting device according to claim 2, characterized in that: the lower extreme of carrier frame (11) is equipped with a plurality of supporting legs, install a plurality of connecting rods on the carrier frame (11) screw thread, a plurality of the connecting rod with a plurality of the supporting legs one-to-one is connected, the upper end of connecting rod is equipped with respectively and is used for driving its rotatory hand wheel (13).

4. A multi-function lifting device according to claim 1, wherein: the mobile platform (2) comprises a lifting platform (21), a side-moving platform (22), a lifting system and a side-moving system, wherein the lifting platform (21) is horizontally arranged and assembled at the upper end of the carrier base (1) through the lifting system, the side-moving platform (22) is horizontally arranged and assembled at the upper end of the lifting platform (21) through the side-moving system, and the bottom plate (3) is assembled at the upper end of the side-moving platform (22).

5. A multi-function lifting device as recited in claim 4, wherein: the lifting system comprises a motor (231), a first corner device (232), two second corner devices (233) and four worm and gear lifters (234) which are respectively assembled at the upper end of the carrier base (1), wherein the first corner device (232) and the two second corner devices (233) are distributed at intervals, the two second corner devices (233) are distributed at two sides of the first corner device (232), input shafts of the two second corner devices (233) are respectively connected with two output shafts of the first corner device (232) in a transmission way through shafts, output shafts of the motor (231) are connected with the input shafts of the first corner device (232) in a transmission way, the input shafts of the two worm gear lifters (234) are respectively in one-to-one correspondence with one output shaft of the two second corner devices (233) in transmission connection, the input shafts of the other two worm gear lifters (234) are respectively in one-to-one correspondence with the other output shaft of the two second corner devices (233) in transmission connection through shafts, and lifting screws of the four worm gear lifters (234) respectively vertically extend and penetrate through screw holes matched on the movable platform (2) in mutual threaded connection.

6. A multi-function lifting device as recited in claim 4, wherein: the side-shifting system comprises four groups of side-shifting mechanisms (24), the four groups of side-shifting mechanisms (24) are distributed in a matrix, each side-shifting mechanism (24) comprises a transverse track (241), a longitudinal track (242), a transverse screw rod (243) and a longitudinal screw rod (244), a hollowed-out area extending towards two ends of each transverse track (241) is arranged in the middle of each transverse track, each transverse screw rod (243) horizontally penetrates through two ends of each transverse track (241), transverse nuts are screwed on each transverse screw rod (243), the transverse nuts are located in hollowed-out areas in the middle of each transverse track (241), a sliding block (245) connected with the corresponding transverse nuts is slidably arranged on each transverse track (241), hollowed-out areas extending towards two ends of each longitudinal track (242) are arranged in the middle of each longitudinal track (242), the longitudinal screw rods (244) horizontally penetrate through two ends of each longitudinal track (242), the longitudinal nuts are screwed on the longitudinal screw rods (244), and the longitudinal nuts are located in the hollowed-out areas of the middle of each transverse track (241), and the longitudinal screw rods (242) are connected with one end of each longitudinal screw rod (243) in a vertical mode.

7. A multi-function lifting device according to claim 1, wherein: the universal ball connecting piece (6) comprises a hemispherical rotating piece, the plane end of the rotating piece faces upwards and is mutually attached and fixed with the middle part of the lower end of the cover plate (5), a spherical groove (41) for accommodating the rotating piece is formed in the middle part of the upper end of the base plate (4), the rotating piece is embedded in the spherical groove (41), a concave ball socket (31) is arranged in the middle part of the upper end of the base plate (3), a limiting groove (32) corresponding to the ball socket (31) is formed in the lower end of the base plate (3), a vertically penetrating channel is formed between the ball socket (31) and the limiting groove (32), a connecting column (611) penetrating through the channel is arranged at the ball top of the rotating piece, a limiting block (612) is arranged in the limiting groove (32), the limiting block (612) is fixedly connected with the lower end of the connecting column (611), and the rotating piece can rotate along the spherical grooves (41) and (31).

8. A multi-function lift device as set forth in claim 7 wherein: the angle adjusting assembly (7) comprises a plurality of positioning bolts (71), wherein a plurality of groups of positioning bolts (71) are respectively assembled on the cover plate (5) at equal intervals through threads, the positioning bolts (71) are centered on the rotating piece and distributed at the edge of the cover plate (5) at intervals along the circumferential direction, and the lower ends of the positioning bolts (71) are propped against the upper end of the base plate (4).

9. A multi-function lift device as set forth in claim 7 wherein: the ball socket is characterized in that a plurality of lower circular grooves are coaxially arranged at the upper end of the bottom plate (3) by taking the ball socket (31) as the center, a plurality of upper circular grooves corresponding to the lower circular grooves one by one are arranged at the lower end of the base plate (4), the longitudinal sections of the lower circular grooves and the upper circular grooves are semicircular, and a plurality of balls (8) are embedded in the lower circular grooves and the corresponding upper circular grooves.

10. A multi-function lifting device according to claim 1, wherein: the base plate (4) is a circular plate, an extension part close to the edge of the base plate (4) is arranged on the base plate (3), a locking bolt (42) transversely penetrating through the extension part is arranged on the extension part, and the locking bolt (42) is used for screwing into the base plate to prop against or separate from the edge of the base plate (4).