CN114935090A

CN114935090A - Portable support frame

Info

Publication number: CN114935090A
Application number: CN202210369505.XA
Authority: CN
Inventors: 马仪; 伏军; 汪洁; 袁文华; 李煜; 宁佐归; 李光明; 张鹤鸣
Original assignee: Shaoyang University
Current assignee: Shaoyang University
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-08-23
Anticipated expiration: 2042-04-08
Also published as: CN114935090B

Abstract

The invention is suitable for the field of support frames, and provides a portable support frame which comprises a bottom plate, wherein a driving working device is arranged at the upper end of the bottom plate; the lower end of the bottom plate is respectively provided with four pulley damping devices which are uniformly and symmetrically distributed in the front, back, left and right directions; a driving device is arranged on the inner side of the bottom plate; the bottom plate lower extreme intermediate position department rotates and is connected with first axis of rotation, and first axis of rotation lower extreme fixedly connected with rotates the motor, rotates motor lower extreme fixedly connected with base, and the base left and right sides is symmetrical two bracing pieces of fixedly connected with respectively. The portable support frame provided by the embodiment of the invention is convenient to use, can be mechanically disassembled and assembled at one time for small-sized decorative support frames and large-sized decorative support frames, saves a lot of time, also ensures the safety of disassembling personnel and ornamental personnel, has a large number of decorative articles, and embodies the safety, convenience and practicability of the device.

Description

Portable support frame

Technical Field

The invention relates to the field of support frames, in particular to a portable support frame.

Background

Along with the development of economy, the living standard of people is improved, and people have great improvement on etiquette and decoration in modern life, so that the requirements of people on the decoration of families, companies and markets are higher and stricter; in the decoration of a family, people generally like decorating rooms by using some things for beauty and space saving, but due to the space limitation of the family, the rooms cannot be beautified too much, and a decoration support frame is particularly important; in addition, in order to provide a warm feeling for employees and a sense of courtesy and solemn for external personnel, a plurality of necessary decorations can be carried out on the company, and a decoration support frame is also very important; in order to increase the aesthetic feeling, the fullness and the honor feeling of the internal space of the shopping mall, the shopping mall is decorated in a large four, but in order to protect the environment and avoid the visual tiredness of people, a plurality of decoration support frames are often used for bearing decorations.

However, many supports on the market are inconvenient to use, cannot be small-sized decorative supports or large-sized decorative supports, and are generally disassembled and assembled step by manpower, so that much time is wasted in use, and great potential safety hazards are generated for disassembling and assembling personnel and ornamental personnel; but also the number of decorative items is very limited.

Disclosure of Invention

The embodiment of the invention aims to provide a portable support frame. The support frame aims to solve the problems that a plurality of support frames on the market are inconvenient to use, cannot be small-sized decorative support frames or large-sized decorative support frames, and generally depend on manpower to disassemble and assemble one by one, so that a lot of time is wasted in use, and great potential safety hazards are generated to disassembling and assembling personnel and ornamental personnel; but also the number of decorative items is very limited.

In order to achieve the purpose, the invention provides the following technical scheme:

a portable support frame comprises a bottom plate, wherein a driving working device is arranged at the upper end of the bottom plate; the lower end of the bottom plate is respectively provided with four pulley damping devices in a front-back, left-right and symmetrical distribution manner; a driving device is arranged on the inner side of the bottom plate; the bottom plate lower extreme intermediate position department rotates and is connected with first axis of rotation, and first axis of rotation lower extreme fixedly connected with rotates the motor, rotates motor lower extreme fixedly connected with base, and the base left and right sides is symmetrical two bracing pieces of fixedly connected with respectively.

As a further scheme of the invention: the driving working device comprises a second rotating shaft, the lower end of the second rotating shaft is rotatably connected with the inner side of the upper end of the bottom plate, the outer ring at the lower end of the second rotating shaft is in threaded connection with a first threaded cylinder, the inner ring of the first threaded cylinder is slidably connected with the outer ring of the second rotating shaft, eight supporting driving devices are uniformly arranged at the outer ring of the first threaded cylinder in an array manner, the upper ends of the eight supporting driving devices are respectively and rotatably connected with eight first main boards through eight rotating pins, the upper ends of the eight first main boards are respectively and rotatably connected with eight threaded mechanisms through eight connecting pins, the inner rings of the eight threaded mechanisms are respectively and fixedly connected with second threaded cylinders through threads, and the inner rings of the second threaded cylinders are fixedly connected with the outer rings of the second rotating shaft; a top end driving working device is arranged at the upper end of the second rotating shaft; eight the lower extreme position department of screw-thread mechanism is eight first tie-post of fixedly connected with respectively, eight first tie-post lower extremes respectively with bottom plate upper end fixed connection.

As a further scheme of the invention: the driving device comprises two third rotating shafts, the two third rotating shafts are respectively and symmetrically distributed in the bottom plate up and down, the two third rotating shafts are distributed on the right side in the bottom plate, the left ends of the two third rotating shafts are respectively and fixedly connected with two first friction wheels, the left ends of the two first friction wheels are respectively and frictionally connected with two second friction wheels, the left ends of the two second friction wheels are respectively and fixedly connected with two threaded rods, and the left ends of the two threaded rods are respectively and rotatably connected with the left end of the inner side of the bottom plate; the left ends of the two threaded rods are respectively in threaded connection with two fixing rings, and the two fixing rings are symmetrically arranged; two belt wheels and a first gear are fixedly connected to the right ends of the two third rotating shafts respectively, and the two belt wheels are connected through the belt wheels respectively; the middle positions of the upper ends of the two first gears are respectively connected with a second gear in a meshed mode, the second gear is fixedly connected with a third friction wheel through a fourth rotating shaft, the upper end of the outer ring of the third friction wheel is connected with a friction disc in a friction mode, the friction disc is fixedly connected with the lower end position of the second rotating shaft, the middle position of the fourth rotating shaft is respectively symmetrically provided with two first bearings, the upper ends of the outer rings of the two first bearings are respectively and fixedly connected with two second connecting columns, and the upper ends of the two second connecting columns are respectively and fixedly connected with the right end position of the inner side of the bottom plate; two second bearings are respectively arranged at the right ends of the two threaded rods, and outer rings of the two second bearings are fixedly connected with the inner side of the bottom plate; and a stepping motor is fixedly connected to the position of the right end of one of the third rotating shafts.

As a further scheme of the invention: the pulley damping device comprises a connecting block, the upper end of the connecting block is fixedly connected with the lower end of the bottom plate, the lower end of the connecting block is respectively and rotatably connected with two first supporting rods through shafts, the two first supporting rods are arranged in a cross distribution mode, the middle positions of the two first supporting rods are respectively and rotatably connected through the shafts, and the lower ends of the two first supporting rods are respectively and rotatably connected with walking wheels through the shafts.

As a further scheme of the invention: the supporting and driving device comprises a rotating frame, one end of the inner side of the rotating frame is fixedly connected with the outer ring of the first threaded cylinder, one end of the outer side of the rotating frame is rotatably connected with a first connecting rod and a second connecting rod through connecting shafts respectively, the lower end of the second connecting rod is rotatably connected with the upper end of the bottom plate, and the upper end of the first connecting rod is rotatably connected with the lower end of the first main plate through a rotating pin.

As a further scheme of the invention: the top end driving working device comprises a connecting plate, the lower end of the connecting plate is fixedly connected with the upper end of the second threaded cylinder, the upper end of the connecting plate is respectively and rotatably connected with two third connecting rods through shafts, the upper ends of the two third connecting rods are respectively and rotatably connected with two second main plates through shafts, and five connecting rings are respectively and uniformly distributed in the middle positions of the upper ends of the two second main plates; and the middle position of one opposite side of the two second main boards is connected with the upper end of a second rotating shaft in a rotating way through a shaft.

As a further scheme of the invention: eight screw thread mechanism includes eight arc screw thread blocks and eight threaded connection round pin pieces, and eight arc screw thread block inside sliding connection respectively has circular retainer plate, and eight threaded connection round pin pieces rotate through eight axles and eight first mainboards respectively and connect.

As a further scheme of the invention: a second sliding groove is formed in the second connecting rod, and the connecting shaft drives the rotating frame and the first connecting rod to slide in the second sliding groove.

The portable support frame provided by the embodiment of the invention is convenient to use, can be used for mechanically disassembling and assembling small-sized decorative support frames and large-sized decorative support frames at one time, saves a lot of time, also ensures the safety of disassembling personnel and ornamental personnel, greatly increases the safety, convenience and practicability of the device, can meet the requirements of customers due to enough decorated articles, and greatly reflects the practicability, convenience and practicability of the device.

Drawings

FIG. 1 is a schematic view of a portable stand;

FIG. 2 is a schematic view of the two pulley and base plate position configurations;

FIG. 3 is a cross-sectional view of the base plate;

FIG. 4 is a partial enlarged view of FIG. 1 at B;

FIG. 5 is an enlarged view of a portion of FIG. 1 at A;

fig. 6 is a schematic structural view of two fixing plates and two third rotating shafts;

FIG. 7 is a schematic structural view of a turret;

fig. 8 is a schematic structural diagram of the connection between the first main plate and the screw mechanism.

In the figure: 1. a base plate; 2. connecting blocks; 3. a first support bar; 4. a traveling wheel; 5. a stepping motor; 6. a first gear; 7. a third rotating shaft; 8. a connecting shaft; 9. rubbing the disc; 10. a first friction wheel; 11. a fixing ring; 12. rotating the motor; 13. a second rotating shaft; 14. a first threaded barrel; 15. a rotating frame; 16. a second connecting rod; 17. a first connecting rod; 18. a rotation pin; 19. a first main board; 20. a screw mechanism; 2001. an arc-shaped thread block; 2002. a pin block is connected through threads; 21. a connecting plate; 22. a second threaded barrel; 23. a third connecting rod; 24. a second main board; 25. a connecting ring; 26. a third friction wheel; 27. a fourth rotating shaft; 28. a second connecting column; 29. a first bearing; 30. a second sliding groove; 31. a base; 32. a support bar; 33. a first rotating shaft; 34. a pulley; 35. a circular retainer ring; 36. a first connecting column; 37. a second gear; 38. a second friction wheel; 39. a threaded rod; 40. a second bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1, a portable supporting rack provided for an embodiment of the present invention includes:

the device comprises a bottom plate 1, wherein a driving working device is arranged at the upper end of the bottom plate 1; the lower end of the bottom plate 1 is respectively provided with four pulley damping devices in a front-back, left-right and symmetrical distribution manner; a driving device is arranged on the inner side of the bottom plate 1; the middle position of the lower end of the bottom plate 1 is rotatably connected with a first rotating shaft 33, the lower end of the first rotating shaft 33 is fixedly connected with a rotating motor 12, the lower end of the rotating motor 12 is fixedly connected with a base 31, and the left side and the right side of the base 31 are respectively and symmetrically and fixedly connected with two supporting rods 32.

In one embodiment of the invention, when a merchant needs to operate the device, the device is firstly pushed to a specified place, the device can be quickly and smoothly pushed to the specified place through the four pulley damping devices, and then the driving device is started to enable the driving working device above the driving working device to start to operate; then, the rotary motor 12 below the base plate 1 is started again, so that the rotary motor 12 drives the upper first rotary shaft 33 to start rotating, and the first rotary shaft 33 indirectly drives the upper driving working device to operate.

As shown in fig. 1 and 8, as a preferred embodiment of the present invention, the driving working device includes a second rotating shaft 13, a lower end of the second rotating shaft 13 is rotatably connected with an inner side of an upper end of the base plate 1, an outer ring of a lower end position of the second rotating shaft 13 is connected with a first threaded cylinder 14 in a threaded manner, an inner ring of the first threaded cylinder 14 is slidably connected with an outer ring of the second rotating shaft 13, eight supporting driving devices are uniformly arranged at positions of the outer ring of the first threaded cylinder 14 in an array manner, the upper ends of the eight supporting driving devices are respectively connected with eight first main plates 19 in a rotating manner through eight rotating pins 18, eight threaded mechanisms 20 are respectively connected at positions of the upper ends of the eight first main plates 19 in a rotating manner through eight connecting pins, second threaded cylinders 22 are respectively connected in a threaded manner to inner rings of the eight threaded mechanisms 20, and the second threaded cylinders 22 are fixedly connected with the outer rings of the second rotating shaft 13; a top end driving working device is arranged at the upper end of the second rotating shaft 13; the lower ends of the eight screw mechanisms 20 are respectively and fixedly connected with eight first connecting columns 36, and the lower ends of the eight first connecting columns 36 are respectively and fixedly connected with the upper end of the bottom plate 1;

in an embodiment of the present invention, after the driving device is started, the second rotating shaft 13 is rotated, so that the first threaded cylinder 14 starts to ascend and descend, so that the first threaded cylinder 14 drives the eight supporting driving devices to start operating, so that the eight supporting driving devices drive the eight first main boards 19 above to start supporting, so that the eight first main boards 19 start operating, and a merchant can place some articles or ornaments on the eight first main boards 19.

As shown in fig. 1, 2, 3, 5 and 6, as another preferred embodiment of the present invention, the driving device includes two third rotating shafts 7, the two third rotating shafts 7 are respectively and symmetrically arranged in the bottom plate 1, the two third rotating shafts 7 are respectively and symmetrically arranged on the upper and lower sides in the bottom plate 1, the two third rotating shafts 7 are respectively and fixedly arranged on the right side in the bottom plate 1, the left ends of the two third rotating shafts 7 are respectively and fixedly connected with two first friction wheels 10, the left ends of the two first friction wheels 10 are respectively and frictionally connected with two second friction wheels 38, the left ends of the two second friction wheels 38 are respectively and fixedly connected with two threaded rods 39, and the left ends of the two threaded rods 39 are respectively and rotatably connected with the left end of the inner side of the bottom plate 1; the left ends of the two threaded rods 39 are respectively in threaded connection with two fixing rings 11, and the two fixing rings 11 are symmetrically arranged; two belt wheels 34 and a first gear 6 are fixedly connected to the right ends of the two third rotating shafts 7 respectively, and the two belt wheels 34 are connected through the belt wheels respectively; the middle positions of the upper ends of the two first gears 6 are respectively in meshing connection with a second gear 37, the second gear 37 is fixedly connected with a third friction wheel 26 through a fourth rotating shaft 27, the upper end of the outer ring of the third friction wheel 26 is in friction connection with a friction disc 9, the lower ends of the friction disc 9 and the second rotating shaft 13 are fixedly connected, the middle position of the fourth rotating shaft 27 is respectively symmetrically and respectively provided with two first bearings 29, the upper ends of the outer rings of the two first bearings 29 are respectively and fixedly connected with two second connecting columns 28, and the upper ends of the two second connecting columns 28 are respectively and fixedly connected with the right end position of the inner side of the bottom plate 1; two second bearings 40 are respectively arranged at the right ends of the two threaded rods 39, and the outer rings of the two second bearings 40 are fixedly connected with the inner side of the bottom plate 1; and a stepping motor 5 is fixedly connected to the right end of each of the third rotating shafts 7.

In one embodiment of the invention, when the top drive working device needs to be operated, we first start the stepping motor 5, the stepping motor 5 is rotated in the forward direction, the stepping motor 5 drives the left third rotating shaft 7 to rotate, the belt wheel 34 on the left third rotating shaft 7 starts to rotate, the two belt wheels 34 are transmitted through the belt, the two belt wheels 34 start to rotate, so that the two third rotating shafts 7 start to rotate simultaneously, so that the two third rotating shafts 7 simultaneously bring the two first friction wheels 10 to rotate, so that the two first friction wheels 10 drive the two second friction wheels 38 to start rotating, so that the two second friction wheels 38 drive the two threaded rods 39 to rotate, the two threaded rods 39 drive the two fixing rings 11 to move towards each other, so that the two fixing rings 11 fix the second rotating shaft 13 and the first rotating shaft 33; then, the rotating motor 12 is started, so that the rotating motor 12 indirectly drives the second rotating shaft 13 to rotate, and the second rotating shaft 13 drives the top end above the second rotating shaft to drive the working device to start to operate; when eight first main boards 19 need to be supported or stored, the stepping motor 5 is started to rotate the stepping motor 5 reversely, two fixing rings 11 are indirectly driven to move away from each other, the first rotating shaft 33 and the second rotating shaft 13 are separated, then the stepping motor 5 rotates reversely, two belt wheels 34 drive two third rotating shafts 7 to rotate, the two third rotating shafts 7 drive two first gears 6 to rotate, the two first gears 6 drive an upper second gear 37 to rotate, the second gear 37 drives a fourth rotating shaft 27 to rotate, the fourth rotating shaft 27 drives a left third friction wheel 26 to rotate, the third friction wheel 26 rubs to drive a friction disc 9 to rotate, the friction disc 9 drives an upper second rotating shaft 13 to rotate, and the second rotating shaft 13 drives a first threaded barrel 14 to adjust up and down, so that the drive working device starts to operate.

As shown in fig. 1, as another preferred embodiment of the present invention, the pulley damping device includes a connection block 2, an upper end of the connection block 2 is fixedly connected to a lower end of a base plate 1, the lower end of the connection block 2 is respectively connected to two first support rods 3 through a shaft in a rotating manner, the two first support rods 3 are arranged in a cross manner, middle positions of the two first support rods 3 are respectively connected through a shaft in a rotating manner, and lower ends of the two first support rods 3 are respectively connected to road wheels 4 through a shaft in a rotating manner.

In one embodiment of the invention, the shock absorbing means is arranged so that when the device encounters some shock or jolt during operation, the shock can be relieved by adjusting the up and down extension of the two first support rods 3.

As shown in fig. 1 and 7, as another preferred embodiment of the present invention, the supporting driving device includes a rotating frame 15, one end of the inside of the rotating frame 15 is fixedly connected to the outer ring of the first threaded cylinder 14, one end of the outside of the rotating frame 15 is rotatably connected to a first connecting rod 17 and a second connecting rod 16 through a connecting shaft 8, the lower end of the second connecting rod 16 is rotatably connected to the upper end of the base plate 1, and the upper end of the first connecting rod 17 is rotatably connected to the lower end of the first main plate 19 through a rotating pin 18.

In one embodiment of the present invention, when the first threaded cylinder 14 moves up and down, the eight rotating frames 15 are driven to move, so that the eight connecting shafts 8 respectively drive the eight rotating frames 15 and the first connecting rods 17 to move, thereby adjusting the eight first main boards 19 to be supported and stored.

As shown in fig. 1, 3 and 4, as another preferred embodiment of the present invention, the top end driving working device includes a connecting plate 21, a lower end of the connecting plate 21 is fixedly connected to an upper end of the second threaded cylinder 22, two third connecting rods 23 are respectively and rotatably connected to the upper end of the connecting plate 21 through shafts, two second main plates 24 are respectively and rotatably connected to upper ends of the two third connecting rods 23 through shafts, and five connecting rings 25 are respectively and uniformly distributed at middle positions of upper ends of the two second main plates 24; the middle position of the opposite side of the two second main plates 24 is rotationally connected with the upper end of the second rotating shaft 13 through a shaft.

In an embodiment of the present invention, when the stepping motor 5 rotates reversely, and indirectly drives the second rotating shaft 13 to rotate, the second threaded cylinder 22 above the second rotating shaft 13 rotates, and at the same time, the second threaded cylinder 22 performs threaded rotation in the eight threaded mechanisms, so that the second threaded cylinder 22 goes up and down, thereby the connecting plate 21 goes up and down, and drives the two third connecting rods 23 above to extend and retract, so that the two second main plates 24 start to operate.

As shown in fig. 1 and 8, as another preferred embodiment of the present invention, eight screw mechanisms 20 include eight arc-shaped screw blocks 2001 and eight screw connection pin blocks 2002, the inside of the eight arc-shaped screw blocks 2001 is slidably connected with a circular fixing ring 35, respectively, and the eight screw connection pin blocks 2002 are rotatably connected with eight first main plates 19 through eight shafts, respectively.

In one embodiment of the present invention, the circular fixing ring 35 enables the eight arc-shaped screw blocks 2001 to maintain a stable state for operation when the eight first main plates 19 are rotated.

As shown in fig. 1 and 4, as another preferred embodiment of the present invention, a second sliding groove 30 is formed in the second connecting rod 16, and the connecting shaft 8 drives the rotating frame 15 and the first connecting rod 17 to slide in the second sliding groove 30.

In an embodiment of the present invention, the second sliding groove 30 is formed in the second connecting rod 16, so that when the rotating frame 15 drives the first connecting rod 17 to move up and down, the operation can be performed quickly and stably.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. A portable support frame comprises a bottom plate (1), and is characterized in that a driving working device is arranged at the upper end of the bottom plate (1); the lower end of the bottom plate (1) is respectively provided with four pulley damping devices which are uniformly and symmetrically distributed in the front-back direction and the left-right direction; a driving device is arranged on the inner side of the bottom plate (1); the bottom plate (1) lower extreme intermediate position department rotates and is connected with first axis of rotation (33), and first axis of rotation (33) lower extreme fixedly connected with rotates motor (12), rotates motor (12) lower extreme fixedly connected with base (31), and two bracing pieces (32) of symmetry fixedly connected with respectively in the base (31) left and right sides.

2. The portable support frame according to claim 1, wherein the driving working device comprises a second rotating shaft (13), the lower end of the second rotating shaft (13) is rotatably connected with the inner side of the upper end of the bottom plate (1), a first threaded cylinder (14) is connected with the outer ring of the lower end of the second rotating shaft (13) in a threaded manner, the inner ring of the first threaded cylinder (14) is slidably connected with the outer ring of the second rotating shaft (13), eight supporting driving devices are uniformly arranged at the outer ring of the first threaded cylinder (14) in an array manner, the upper ends of the eight supporting driving devices are respectively connected with eight first main plates (19) in a rotating manner through eight rotating pins (18), eight threaded mechanisms (20) are respectively connected with the upper end of the eight first main plates (19) in a rotating manner through eight connecting pins, the inner rings of the eight threaded mechanisms (20) are respectively connected with second threaded cylinders (22) in a threaded manner, and the inner ring of the second threaded cylinder (22) is fixedly connected with the outer ring of the second rotating shaft (13); a top end driving working device is arranged at the upper end of the second rotating shaft (13); eight screw thread mechanism (20) lower extreme position department respectively fixedly connected with eight first spliced pole (36), eight first spliced pole (36) lower extreme respectively with bottom plate (1) upper end fixed connection.

3. The portable support frame according to claim 2, wherein the driving device comprises two third rotating shafts (7), the two third rotating shafts (7) are respectively and symmetrically arranged in the bottom plate (1) up and down, the two third rotating shafts (7) are respectively and symmetrically arranged in the right side of the bottom plate (1), the left ends of the two third rotating shafts (7) are respectively and fixedly connected with two first friction wheels (10), the left ends of the two first friction wheels (10) are respectively and frictionally connected with two second friction wheels (38), the left ends of the two second friction wheels (38) are respectively and fixedly connected with two threaded rods (39), and the left ends of the two threaded rods (39) are respectively and rotatably connected with the left end of the inner side of the bottom plate (1); the left ends of the two threaded rods (39) are respectively in threaded connection with two fixing rings (11), and the two fixing rings (11) are symmetrically arranged; two belt wheels (34) and a first gear (6) are fixedly connected to the right end positions of the two third rotating shafts (7) respectively, and the two belt wheels (34) are connected through the belt wheels respectively; the middle positions of the upper ends of the two first gears (6) are respectively connected with a second gear (37) in a meshed mode, the second gear (37) is fixedly connected with a third friction wheel (26) through a fourth rotating shaft (27), the upper end of the outer ring of the third friction wheel (26) is connected with a friction disc (9) in a friction mode, the lower ends of the friction disc (9) and the second rotating shaft (13) are fixedly connected, the middle position of the fourth rotating shaft (27) is respectively and symmetrically provided with two first bearings (29), the upper ends of the outer rings of the two first bearings (29) are respectively and fixedly connected with two second connecting columns (28), and the upper ends of the two second connecting columns (28) are respectively and fixedly connected with the right end of the inner side of the bottom plate (1); two second bearings (40) are respectively arranged at the right end positions of the two threaded rods (39), and the outer rings of the two second bearings (40) are fixedly connected with the inner side of the bottom plate (1); and a stepping motor (5) is fixedly connected to the right end of each of the two third rotating shafts (7).

4. A portable support according to claim 1, wherein the pulley damping device comprises a connecting block (2), the upper end of the connecting block (2) is fixedly connected with the lower end of the bottom plate (1), the lower end of the connecting block (2) is respectively connected with two first supporting rods (3) through a shaft in a rotating manner, the two first supporting rods (3) are arranged in a cross distribution manner, the middle positions of the two first supporting rods (3) are respectively connected through a shaft in a rotating manner, and the lower ends of the two first supporting rods (3) are respectively connected with walking wheels (4) through a shaft in a rotating manner.

5. The portable support rack of claim 2, wherein the support driving device comprises a rotating rack (15), one end of the inner side of the rotating rack (15) is fixedly connected with the outer ring of the first threaded cylinder (14), one end of the outer side of the rotating rack (15) is rotatably connected with a first connecting rod (17) and a second connecting rod (16) through a connecting shaft (8), the lower end of the second connecting rod (16) is rotatably connected with the upper end of the bottom plate (1), and the upper end of the first connecting rod (17) is rotatably connected with the lower end of the first main plate (19) through a rotating pin (18).

6. The portable support frame according to claim 2, wherein the top end driving working device comprises a connecting plate (21), the lower end of the connecting plate (21) is fixedly connected with the upper end of the second threaded cylinder (22), the upper end of the connecting plate (21) is respectively connected with two third connecting rods (23) in a rotating manner through a shaft, the upper ends of the two third connecting rods (23) are respectively connected with two second main plates (24) in a rotating manner through a shaft, and five connecting rings (25) are respectively and uniformly distributed at the middle positions of the upper ends of the two second main plates (24); the middle positions of the opposite sides of the two second main boards (24) are rotationally connected with the upper ends of the second rotating shafts (13) through shafts.

7. The portable support according to claim 2, wherein the eight screw mechanisms (20) comprise eight arc-shaped screw blocks (2001) and eight screw connection pin blocks (2002), the inner parts of the eight arc-shaped screw blocks (2001) are respectively connected with a circular fixing ring (35) in a sliding mode, and the eight screw connection pin blocks (2002) are respectively connected with the eight first main plates (19) in a rotating mode through eight shafts.

8. The portable support according to claim 5, wherein the second connecting rod (16) has a second sliding slot (30) formed therein, and the connecting shaft (8) drives the rotating frame (15) and the first connecting rod (17) to slide in the second sliding slot (30).