阅读说明：本技术 一种钢筋桁架楼承板施工用支撑装置 (Supporting device for construction of steel bar truss floor bearing plate ) 是由 金晓清 蒋志桢 陈楠 龚诗雨 刘金龙 于 2021-09-07 设计创作，主要内容包括：本发明属建筑技术领域,尤其是一种钢筋桁架楼承板施工用支撑装置,针对现有的支撑装置对楼承板支撑面积固定,不便于调节支撑,且多通过人工搬运,增加劳动强度,重复利用率低的问题,现提出如下方案,其包括底部盒,底部盒的底部连接有四个万向轮,底部盒的顶部设置有两个推把,底部盒内设置底部扩展支撑机构,底部盒的顶部固定安装有方形柱,方形柱的顶部开设有凹槽,凹槽内滑动安装有矩形柱,矩形柱的顶端固定连接有支撑盒,支撑盒的顶部连接有第一防火板,支撑盒内对称滑动安装有两个伸缩板。本发明便于调整对楼承板支撑面积和支撑高度,同时方便移动,避免人工搬运,降低劳动强度,提高了重复利用率。(The invention belongs to the technical field of buildings, and particularly relates to a supporting device for construction of a steel bar truss floor bearing plate. The invention is convenient to adjust the supporting area and the supporting height of the floor bearing plate, is convenient to move, avoids manual transportation, reduces the labor intensity and improves the repeated utilization rate.)

1. The supporting device for the construction of the steel bar truss floor bearing plate comprises a bottom box (1), wherein four universal wheels (2) are connected to the bottom of the bottom box (1), two push handles (3) are arranged at the top of the bottom box (1), the supporting device is characterized in that a bottom expansion supporting mechanism is arranged in the bottom box (1), a square column (4) is fixedly mounted at the top of the bottom box (1), a groove (10) is formed in the top of the square column (4), a rectangular column (5) is slidably mounted in the groove (10), a supporting box (6) is fixedly connected to the top end of the rectangular column (5), a first fireproof plate (7) is connected to the top of the supporting box (6), two expansion plates (8) are symmetrically and slidably mounted in the supporting box (6), second fireproof plates (9) are connected to the tops of the two expansion plates (8), a round hole (15) is formed in the top of the rectangular column (5), the round hole (15) is a through hole, a rotary rod (16) is rotatably installed in the round hole (15), a driven gear (17) is fixedly installed at the bottom end of the rotary rod (16), a rack (20) is fixedly installed on the inner wall of the groove (10), a transmission unit is connected between the driven gear (17) and the rack (20), the top end of the rotary rod (16) extends into the support box (6) and is fixedly provided with a first bevel gear (24), two threaded rods (21) are rotatably installed in the support box (6), one ends, close to each other, of the two threaded rods (21) are fixedly provided with second bevel gears (25), the two second bevel gears (25) are respectively meshed with the first bevel gears (24), the two threaded rods (21) are respectively in threaded connection with the telescopic plate (8), telescopic motors (11) are respectively and fixedly installed on two sides of the square column (4), and connecting blocks (12) are respectively and fixedly installed on output shafts of the two telescopic motors (11), two connecting blocks (12) all with the outside fixed connection of rectangle post (5), the steel wire hole has all been seted up on two connecting blocks (12), the one end of wire rope (27) all is connected with in two steel wire holes, the other end of two wire rope (27) all links to each other with bottom extension supporting mechanism, the outside threaded connection of connecting block (12) has bolt (28), the end of bolt (28) extend to in the steel wire hole and with wire rope (27) contact.

2. The support device for construction of the steel bar truss floor deck according to claim 1, bottom extension supporting mechanism includes expansion board (29), guide arm (35), spring (36), push plate (37) and support element, guide arm (35) are two and equal fixed mounting in bottom box (1), expansion board (29) and push plate (37) are two, expansion board (29) link to each other with the push plate (37) that corresponds, two push plate (37) all slidable mounting in the outside of two guide arms (35), wire rope (27) link to each other with the push plate (37) that corresponds, spring (36) are four and the cover is established in the outside of the guide arm (35) that corresponds, the one end and the push plate (37) of spring (36) link to each other, the other end and the inner wall of bottom box (1) of spring (36) link to each other, support element is a plurality of and sets up on the expansion board (29) that correspond.

3. The supporting device for construction of the steel bar truss floor deck according to claim 2, wherein the supporting unit comprises a twist handle (30), a plastic pad (31) and a screw rod (32), the screw rod (32) is screwed on the corresponding expansion plate (29), the twist handle (30) is rotatably connected with the top end of the screw rod (32), and the plastic pad (31) is rotatably connected with the bottom end of the screw rod (32).

4. The supporting device for construction of the steel bar truss floor bearing plate according to claim 1, wherein expansion holes (33) are formed in two sides of the bottom box (1), and the expansion plates (29) are connected with the corresponding expansion holes (33) in a sliding mode.

5. The supporting device for construction of the steel bar truss floor bearing plate according to claim 1, wherein two through holes (34) are formed in the top of the bottom box (1), pulleys are arranged at bottom openings of the two through holes (34), and the steel wire rope (27) is in transmission connection with the pulleys.

6. The support device for construction of the steel bar truss floor bearing plate according to claim 1, wherein the transmission unit comprises a support piece (18) and a gear (19), the support piece (18) is connected with the bottom end of the rectangular column (5), the gear (19) is rotatably connected with the support piece (18), the gear (19) is engaged with the rack (20), and the gear (19) is engaged with the driven gear (17).

7. The supporting device for construction of the steel bar truss floor bearing plate according to claim 1, wherein a limiting block (14) is fixedly installed on the inner wall of the groove (10), a limiting groove (13) is formed in the outer side of the rectangular column (5), and the limiting block (14) is connected with the inner wall of the limiting groove (13) in a sliding mode.

8. The supporting device for construction of the steel bar truss floor bearing plate according to claim 1, wherein a bearing block (23) is fixedly installed in the supporting box (6), a threaded rod (21) is rotatably connected with the corresponding bearing block (23), a threaded groove (22) is formed in the outer side of the expansion plate (8), and the threaded rod (21) is in threaded connection with the threaded groove (22).

9. The supporting device for the construction of the steel bar truss floor bearing plate according to claim 1, wherein telescopic holes (38) are formed in both sides of the supporting box (6), the telescopic plate (8) is slidably connected with the corresponding telescopic holes (38), a guide block (39) is fixedly mounted on the inner wall of each telescopic hole (38), a guide groove (40) is formed in the outer side of each telescopic plate (8), and the guide block (39) is slidably connected with the inner wall of each guide groove (40).

10. The supporting device for construction of the steel bar truss floor bearing plate according to claim 1, wherein a stay bar (26) is fixedly installed at the outer side of the rectangular column (5), the stay bar (26) is connected with the bottom of the supporting box (6), a controller (41) is arranged at the outer side of the square column (4), and the two telescopic motors (11) are connected with the controller (41).

Technical Field

The invention relates to the technical field of buildings, in particular to a supporting device for construction of a steel bar truss floor bearing plate.

Background

A steel bar truss floor bearing plate belongs to one of unsupported profiled combined floor bearing plates, and is characterized in that an upper layer longitudinal steel bar and a lower layer longitudinal steel bar are welded and shaped with a small-diameter steel bar which is formed by bending in a background processing field to form a small truss which has certain rigidity and can bear load, then a profiled steel plate is fixed on a steel beam by using a stud in a construction site, and then the small truss is placed on the profiled steel plate to be bound and welded; the back of checking and accepting is made through cast in situ concrete, need lay in building the carrier plate, and the bottom is in unsettled state when laying, just needs to use strutting arrangement, to building carrier plate bottom sprag, makes things convenient for later stage operation construction.

The existing supporting device is fixed on the supporting area of the floor bearing plate, is not convenient to adjust and support, and is carried by workers in multiple ways, so that the labor intensity is increased, and the repeated utilization rate is low.

Disclosure of Invention

The invention aims to provide a supporting device for construction of a steel bar truss floor bearing plate, which can adjust the supporting area of the floor bearing plate, support the height, avoid manual carrying and improve the recycling rate.

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

a supporting device for construction of a steel bar truss floor bearing plate comprises a bottom box, wherein the bottom of the bottom box is connected with four universal wheels, two push handles are arranged at the top of the bottom box, a bottom expanding supporting mechanism is arranged in the bottom box, a square column is fixedly arranged at the top of the bottom box, a groove is formed in the top of the square column, a rectangular column is slidably arranged in the groove, a supporting box is fixedly connected to the top end of the rectangular column, a first fireproof plate is connected to the top of the supporting box, two telescopic plates are symmetrically and slidably arranged in the supporting box, a second fireproof plate is connected to the tops of the two telescopic plates, a round hole is formed in the top of the rectangular column and is a through hole, a rotary rod is rotatably arranged in the round hole, a driven gear is fixedly arranged at the bottom end of the rotary rod, a rack is fixedly arranged on the inner wall of the groove, a transmission unit is connected between the driven gear and the rack, the top end of the rotary rod extends into the supporting box and is fixedly arranged with a first bevel gear, rotate in the supporting box and install two threaded rods, the equal fixed mounting of one end that two threaded rods are close to each other has second bevel gear, two second bevel gears all mesh with first bevel gear, two threaded rods all with expansion plate threaded connection, the equal fixed mounting in both sides of square post has flexible motor, equal fixed mounting has the connecting block on the output shaft of two flexible motors, two connecting blocks all with the outside fixed connection of rectangle post, the steel wire hole has all been seted up on two connecting blocks, the downthehole one end that all is connected with wire rope of two steel wires, two wire rope's the other end all links to each other with bottom extension supporting mechanism, the outside threaded connection of connecting block has the bolt, the end of bolt extends to in the steel wire hole and contacts with wire rope.

Preferably, bottom extension supporting mechanism includes the expansion board, the guide arm, a spring, push away crowded board and support element, the guide arm is two and equal fixed mounting in the bottom box, the expansion board is two with pushing away the crowded board, the expansion board links to each other with the crowded board that pushes away that corresponds, two push away the equal slidable mounting in the outside of two guide arms of crowded board, wire rope links to each other with the crowded board that corresponds, the spring is four and the cover establishes the outside at the guide arm that corresponds, the one end of spring links to each other with pushing away the crowded board, the other end of spring links to each other with the inner wall of bottom box, support element is a plurality of and sets up on the expansion board that corresponds, support element includes the handle of turning round, plastic pad and hob, hob threaded connection is on the expansion board that corresponds, turn round the top of handle and hob, plastic pad rotates with the bottom of hob to be connected.

Preferably, the both sides of bottom box have all been seted up the extension hole, and the expansion board slides with the extension hole that corresponds and links to each other, and two through-holes have been seted up at the top of bottom box, and the end opening of two through-holes all is provided with the pulley, and wire rope is connected with the pulley transmission.

Preferably, the transmission unit comprises a supporting sheet and a gear, the supporting sheet is connected with the bottom end of the rectangular column, the gear is rotatably connected with the supporting sheet, the gear is meshed with the rack, and the gear is meshed with the driven gear.

Preferably, a limiting block is fixedly mounted on the inner wall of the groove, a limiting groove is formed in the outer side of the rectangular column, and the limiting block is connected with the inner wall of the limiting groove in a sliding mode.

Preferably, a bearing block is fixedly mounted in the support box, the threaded rod is connected with the corresponding bearing block in a rotating mode, a threaded groove is formed in the outer side of the telescopic plate, and the threaded rod is in threaded connection with the threaded groove.

Preferably, the telescopic holes are formed in the two sides of the supporting box, the telescopic plates are connected with the corresponding telescopic holes in a sliding mode, the guide blocks are fixedly mounted on the inner walls of the telescopic holes, the guide grooves are formed in the outer sides of the telescopic plates, and the guide blocks are connected with the inner walls of the guide grooves in a sliding mode.

Preferably, the outside fixed mounting of rectangle post has the vaulting pole, and the vaulting pole links to each other with the bottom that supports the box, and the outside of square post is provided with the controller, and two flexible motors all link to each other with the controller.

Compared with the prior art, the invention has the advantages that:

the supporting frame in the scheme can be adjusted in height, can adapt to supports with different heights, can enlarge the supporting area of the floor bearing plate while adjusting the height upwards, and gradually enlarges the supporting area of the floor bearing plate along with the increase of the supporting height, so that the use is convenient;

according to the scheme, the supporting height is adjusted upwards, meanwhile, the supporting area of the bottom box is gradually enlarged along with the rising of the supporting height, and the stability of the bottom support is improved;

this scheme is through setting up the universal wheel in the bottom, when not using, can conveniently remove, practices thrift the manpower, improves used repeatedly's efficiency.

The invention has simple structure, convenient operation, convenient adjustment of the supporting area and the supporting height of the floor bearing plate, convenient movement, avoiding manual transportation, reducing labor intensity and improving the repeated utilization rate.

Drawings

Fig. 1 is a three-dimensional view of a supporting device for construction of a steel bar truss floor deck according to the present invention;

fig. 2 is a schematic cross-sectional structural view of a support device for construction of a steel bar truss floor deck according to the present invention;

fig. 3 is a schematic structural view of a part a of a support device for construction of a steel bar truss floor deck according to the present invention;

fig. 4 is a schematic structural view of part B of a support device for construction of a steel bar truss floor deck according to the present invention;

fig. 5 is a schematic structural view of part C of a support device for construction of a steel bar truss floor deck according to the present invention;

fig. 6 is a schematic structural view of part D of a support device for construction of a steel bar truss floor deck according to the present invention;

FIG. 7 is a schematic view of a meshing connection structure of a driven gear and a gear according to the present invention;

fig. 8 is a schematic view of a connection structure of the push rod motor and the plastic pad according to a second embodiment of the present invention.

In the figure: 1. a bottom box; 2. a universal wheel; 3. a push handle; 4. a square column; 5. a rectangular column; 6. a support box; 7. a first fire retardant panel; 8. a retractable plate; 9. a second fire retardant panel; 10. a groove; 11. a telescopic motor; 12. connecting blocks; 13. a limiting groove; 14. a limiting block; 15. a circular hole; 16. rotating the rod; 17. a driven gear; 18. a support sheet; 19. a gear; 20. a rack; 21. a threaded rod; 22. a thread groove; 23. a bearing block; 24. a first bevel gear; 25. a second bevel gear; 26. a stay bar; 27. a wire rope; 28. a bolt; 29. an expansion board; 30. twisting a handle; 31. a plastic pad; 32. a screw rod; 33. an expanding hole; 34. a through hole; 35. a guide bar; 36. a spring; 37. pushing the plate; 38. a telescopic hole; 39. a guide block; 40. a guide groove; 41. and a controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1-8, a supporting device for construction of a steel bar truss floor bearing plate comprises a bottom box 1, four universal wheels 2 are connected to the bottom of the bottom box 1, two push handles 3 are arranged on the top of the bottom box 1, a bottom expansion supporting mechanism is arranged in the bottom box 1, a square column 4 is fixedly mounted on the top of the bottom box 1, a groove 10 is formed in the top of the square column 4, a rectangular column 5 is slidably mounted in the groove 10, a supporting box 6 is fixedly connected to the top end of the rectangular column 5, a first fireproof plate 7 is connected to the top of the supporting box 6, two telescopic plates 8 are symmetrically and slidably mounted in the supporting box 6, a second fireproof plate 9 is connected to the tops of the two telescopic plates 8, a round hole 15 is formed in the top of the rectangular column 5, the round hole 15 is a through hole, a rotary rod 16 is rotatably mounted in the round hole 15, a driven gear 17 is fixedly mounted at the bottom end of the rotary rod 16, and a rack 20 is fixedly mounted on the inner wall of the groove 10, a transmission unit is connected between the driven gear 17 and the rack 20, the transmission unit comprises a support sheet 18 and a gear 19, the support sheet 18 is connected with the bottom end of the rectangular column 5, the gear 19 is rotatably connected with the support sheet 18, the gear 19 is meshed with the rack 20, the gear 19 is meshed with the driven gear 17, a driving gear is fixedly installed on the outer side of the gear 19, the gear 19 is meshed with the driven gear 17 through the driving gear, the transmission unit plays a transmission role, the driven gear 17 is matched with the rack 20 for use, the top end of the rotary rod 16 extends into the support box 6 and is fixedly provided with a first bevel gear 24, two threaded rods 21 are rotatably installed in the support box 6, one ends, close to each other, of the two threaded rods 21 are fixedly provided with second bevel gears 25, the two second bevel gears 25 are meshed with the first bevel gear 24, the two threaded rods 21 are both in threaded connection with the telescopic plate 8, and telescopic motors 11 are fixedly installed on both sides of the square column 4, equal fixed mounting has connecting block 12 on two telescopic motor 11's the output shaft, two connecting blocks 12 all with the outside fixed connection of rectangle post 5, the steel wire hole has all been seted up on two connecting blocks 12, all be connected with wire rope 27's one end in two steel wire holes, two wire rope 27's the other end all links to each other with bottom extension supporting mechanism, connecting block 12's outside threaded connection has bolt 28, bolt 28's end extends to in the steel wire hole and contacts with wire rope 27.

In this embodiment, the bottom expansion supporting mechanism includes two expansion plates 29, two guide rods 35, two springs 36, two pushing plates 37 and a supporting unit, the two guide rods 35 are both fixedly installed in the bottom box 1, the two expansion plates 29 and the two pushing plates 37 are both connected, the expansion plates 29 are connected with the corresponding pushing plates 37, the two pushing plates 37 are both slidably installed at the outer sides of the two guide rods 35, the wire ropes 27 are connected with the corresponding pushing plates 37, the four springs 36 are sleeved at the outer sides of the corresponding guide rods 35, one end of each spring 36 is connected with the corresponding pushing plate 37, the other end of each spring 36 is connected with the inner wall of the bottom box 1, the plurality of supporting units are arranged on the corresponding expansion plates 29, the supporting unit includes a twisting handle 30, a plastic pad 31 and a spiral rod 32, the spiral rod 32 is threadedly connected to the corresponding expansion plate 29, the twisting handle 30 is connected to the top end of the spiral rod 32, the plastic pad 31 is rotatably connected to the bottom end of the spiral rod 32, set up bottom extension supporting mechanism and be used for expanding the supporting area of bottom box 1, and the supporting area of bottom box 1 enlarges along with the high increase of supporting the building carrier plate, and the support element who sets up is used for expanding to accomplish the back and plays the supporting role through plastic pad 31 and ground contact.

In this embodiment, the extension hole 33 has all been seted up to the both sides of bottom box 1, and the expansion board 29 slides with the extension hole 33 that corresponds and links to each other, and two through-holes 34 have been seted up at the top of bottom box 1, and the end opening of two through-holes 34 all is provided with the pulley, and wire rope 27 is connected with the pulley transmission.

In this embodiment, fixed mounting has stopper 14 on the inner wall of recess 10, and spacing groove 13 has been seted up in the outside of rectangle post 5, and stopper 14 slides with the inner wall of spacing groove 13 and links to each other, and stopper 14 and the spacing groove 13 that set up can guarantee that rectangle post 5 can only be vertical in recess 10 and slide.

In this embodiment, a bearing block 23 is fixedly installed in the support box 6, the threaded rod 21 is rotatably connected with the corresponding bearing block 23, a threaded groove 22 is formed in the outer side of the expansion plate 8, and the threaded rod 21 is in threaded connection with the threaded groove 22.

In this embodiment, telescopic holes 38 have been all seted up to the both sides of support box 6, expansion plate 8 and the corresponding telescopic hole 38 sliding connection, fixed mounting has guide block 39 on the inner wall of telescopic hole 38, and guide way 40 has been seted up in the outside of expansion plate 8, and guide block 39 and the inner wall of guide way 40 slide to each other, and the cooperation of guide block 39 and guide way 40 guarantees that expansion plate 8 slides steadily in telescopic hole 38.

In this embodiment, a stay bar 26 is fixedly installed on the outer side of the rectangular column 5, the stay bar 26 is connected with the bottom of the support box 6, a controller 41 is arranged on the outer side of the square column 4, and the two telescopic motors 11 are both connected with the controller 41.

In the embodiment, during use, the device is integrally moved to the position below a floor bearing plate to be supported through the universal wheel 2, the power is switched on, the two telescopic motors 11 are started, the two telescopic motors 11 drive the rectangular column 5 to move upwards through the two connecting blocks 12, the rectangular column 5 pushes the supporting box 6 and the first fireproof plate 7 to move upwards to be close to the floor bearing plate, the rectangular column 5 drives the rotary rod 16 and the gear 19 to move upwards, the gear 19 rotates upwards while depending on the rack 20, the gear 19 is meshed with the driven gear 17 through the driving gear, the gear 19 rotates to drive the driven gear 17 to rotate, the driven gear 17 drives the rotary rod 16 to rotate, the rotary rod 16 drives the two threaded rods 21 to rotate through the first bevel gear 24 and the two second bevel gears 25, the two threaded rods 21 drive the two telescopic plates 8 to be away from each other, and the two telescopic plates 8 drive the two second fireproof plates 9 to be away from each other, the support area of the support box 6 is enlarged, the support area of the floor bearing plate is gradually enlarged along with the increase of the support height until the first fireproof plate 7 and the second fireproof plate 9 are both abutted against the bottom of the floor bearing plate, the two telescopic motors 11 are stopped, the two connecting blocks 12 move upwards and simultaneously drive the two extrusion plates 37 to be away from each other through the two steel wire ropes 27, an outward pulling force is generated when the steel wire ropes 27 pull the extrusion plates 37, the outward pulling force overcomes the elastic force of the springs 36, so that the two extrusion plates 37 are away from each other, the two extrusion plates 37 push the two expansion plates 29 to be away from each other, the two expansion plates 29 drive the corresponding support units to be expanded outwards, the support area of the bottom box 1 is gradually enlarged along with the increase of the support height, the stability of the bottom support is increased until the two telescopic motors 11 stop, the two expansion plates 29 stop being expanded outwards, the screw rod 32 is rotated through the twisting handle 30, the hob 32 drives plastic pad 31 downstream and with the ground contact, play the supporting role, can avoid universal wheel 2 and ground contact, the stability of bottom sprag has been increased, the completion is built the back, need put aside the device, at first handle 30 is turned round in the reversal, make plastic pad 31 leave ground, universal wheel 2 and ground contact, reverse two flexible motors 11 of start, make 5 downstream of rectangle post, two expansion plates 8 remove to supporting box 6 simultaneously, under spring 36's elastic force effect, expansion plate 29 removes in to bottom box 1, stop flexible motor 11, can remove used repeatedly with the device.

Example two

Referring to fig. 1-8, a supporting device for construction of a steel bar truss floor bearing plate comprises a bottom box 1, four universal wheels 2 are connected to the bottom of the bottom box 1, two push handles 3 are arranged on the top of the bottom box 1, a bottom expansion supporting mechanism is arranged in the bottom box 1, a square column 4 is fixedly mounted on the top of the bottom box 1, a groove 10 is formed in the top of the square column 4, a rectangular column 5 is slidably mounted in the groove 10, a supporting box 6 is fixedly connected to the top end of the rectangular column 5, a first fireproof plate 7 is connected to the top of the supporting box 6, two telescopic plates 8 are symmetrically and slidably mounted in the supporting box 6, a second fireproof plate 9 is connected to the tops of the two telescopic plates 8, a round hole 15 is formed in the top of the rectangular column 5, the round hole 15 is a through hole, a rotary rod 16 is rotatably mounted in the round hole 15, a driven gear 17 is fixedly mounted at the bottom end of the rotary rod 16, and a rack 20 is fixedly mounted on the inner wall of the groove 10, a transmission unit is connected between the driven gear 17 and the rack 20, the transmission unit comprises a support sheet 18 and a gear 19, the support sheet 18 is connected with the bottom end of the rectangular column 5, the gear 19 is rotatably connected with the support sheet 18, the gear 19 is meshed with the rack 20, the gear 19 is meshed with the driven gear 17, a driving gear is fixedly installed on the outer side of the gear 19, the gear 19 is meshed with the driven gear 17 through the driving gear, the transmission unit plays a role in transmission, the driven gear 17 is matched with the rack 20 for use, the top end of the rotary rod 16 extends into the support box 6 and is fixedly provided with a first bevel gear 24, two threaded rods 21 are rotatably installed in the support box 6, two second bevel gears 25 are fixedly installed at the mutually close ends of the two threaded rods 21, the two second bevel gears 25 are meshed with the first bevel gear 24, and the two threaded rods 21 are both in threaded connection with the telescopic plate 8, equal fixed mounting in both sides of square post 4 has flexible motor 11, equal fixed mounting has connecting block 12 on two flexible motor 11's the output shaft, two connecting blocks 12 all with the outside fixed connection of rectangle post 5, the steel wire hole has all been seted up on two connecting blocks 12, all be connected with wire rope 27's one end in two steel wire holes, two wire rope 27's the other end all links to each other with bottom extension supporting mechanism, connecting block 12's outside threaded connection has bolt 28, bolt 28's end extends to in the steel wire hole and contacts with wire rope 27, loosen bolt 28, can dismantle the change to wire rope 27, turn round bolt 28, can reuse.

In this embodiment, the bottom expansion supporting mechanism includes two expansion plates 29, two guide rods 35, two springs 36, two pushing plates 37 and a supporting unit, where the two guide rods 35 are all fixedly installed in the bottom box 1, the two expansion plates 29 and the two pushing plates 37 are both two, the expansion plates 29 are connected to the corresponding pushing plates 37, the two pushing plates 37 are all slidably installed on the outer sides of the two guide rods 35, the wire ropes 27 are connected to the corresponding pushing plates 37, the four springs 36 are sleeved on the outer sides of the corresponding guide rods 35, one end of each spring 36 is connected to the corresponding pushing plate 37, the other end of each spring 36 is connected to the inner wall of the bottom box 1, the plurality of supporting units are arranged on the corresponding expansion plates 29, the bottom expansion supporting mechanism is arranged to expand the supporting area of the bottom box 1, and the supporting area of the bottom box 1 is expanded along with the increase of the height of the supporting floor slab.

In this embodiment, the supporting unit includes push rod motor and plastic pad 31, and the push rod motor sets up in the bottom of expansion board 29, and plastic pad 31 links to each other with the output shaft of push rod motor, and the supporting unit who sets up is used for expanding to accomplish the back and plays the supporting role through plastic pad 31 and ground contact.

In this embodiment, the extension hole 33 has all been seted up to the both sides of bottom box 1, and the expansion board 29 slides with the extension hole 33 that corresponds and links to each other, and two through-holes 34 have been seted up at the top of bottom box 1, and the end opening of two through-holes 34 all is provided with the pulley, and wire rope 27 is connected with the pulley transmission.

In this embodiment, fixed mounting has stopper 14 on the inner wall of recess 10, and spacing groove 13 has been seted up in the outside of rectangle post 5, and stopper 14 slides with the inner wall of spacing groove 13 and links to each other, and stopper 14 and the spacing groove 13 that set up can guarantee that rectangle post 5 can only be vertical in recess 10 and slide.

In this embodiment, a bearing block 23 is fixedly installed in the support box 6, the threaded rod 21 is rotatably connected with the corresponding bearing block 23, a threaded groove 22 is formed in the outer side of the expansion plate 8, and the threaded rod 21 is in threaded connection with the threaded groove 22.

In this embodiment, telescopic holes 38 have been all seted up to the both sides of support box 6, expansion plate 8 and the corresponding telescopic hole 38 sliding connection, fixed mounting has guide block 39 on the inner wall of telescopic hole 38, and guide way 40 has been seted up in the outside of expansion plate 8, and guide block 39 and the inner wall of guide way 40 slide to each other, and the cooperation of guide block 39 and guide way 40 guarantees that expansion plate 8 slides steadily in telescopic hole 38.

In this embodiment, a stay bar 26 is fixedly installed on the outer side of the rectangular column 5, the stay bar 26 is connected with the bottom of the support box 6, a controller 41 is arranged on the outer side of the square column 4, and the two telescopic motors 11 are both connected with the controller 41.

In this embodiment, the difference between the second embodiment and the first embodiment lies in that the manual mode of the supporting unit is changed into the automatic mode, and specifically, the push rod motor pushes the plastic pad 31 to move downward to contact with the ground to play a supporting role, so that the manpower is saved, and the working efficiency is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.