CN113565347B

CN113565347B - Supporting device for construction of steel bar truss floor bearing plate

Info

Publication number: CN113565347B
Application number: CN202111044868.8A
Authority: CN
Inventors: 金晓清; 蒋志桢; 陈楠; 龚诗雨; 刘金龙
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-11-01
Anticipated expiration: 2041-09-07
Also published as: CN113565347A

Abstract

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.

Description

Supporting device for construction of steel bar truss floor bearing plate

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:

the utility model provides a strutting arrangement is used in construction of steel bar truss building carrier plate, including the bottom box, the bottom of bottom box is connected with four universal wheels, the top of bottom box is provided with two and pushes away the handle, set up bottom extension supporting mechanism in the bottom box, the top fixed mounting of bottom box has square post, the top of square post is seted up flutedly, slidable mounting has the rectangle post in the recess, the top fixedly connected with of rectangle post supports the box, the top of support box is connected with first PLASTIC LAMINATED, it has two expansion plates to support the interior symmetrical slidable mounting of box, the top of two expansion plates all is connected with the second PLASTIC LAMINATED, the round hole has been seted up at the top of rectangle post, the round hole is the through-hole, the round hole internal rotation installs the rotary rod, the bottom fixed mounting of rotary rod has driven gear, the inner wall fixed mounting of recess has the rack, be connected with the drive unit between driven gear and the rack, the top of rotary rod extends to in the support box and fixed mounting has first bevel gear, the support box is internal rotation of box installs two threaded rods, the equal fixed mounting of one end that two threaded rods are close to each other end of each other side has the second bevel gear, two threaded rod all are engaged with the steel wire rope bolt connection blocks outside the steel wire bolt connection block and all extend to the steel wire rope bolt connection block, two steel wire rope bolt connection blocks outside the steel wire connection block all is connected with the steel wire connection block.

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 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 pushes away 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 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, the top of handle and hob is turned round, the 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 mounted 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 of transmission, the driven gear 17 is matched with the rack 20 for use, the top end of the rotating rod 16 extends into the support box 6 and is fixedly provided with a first bevel gear 24, two threaded rods 21 are rotatably mounted in the support box 6, two second bevel gears 25 are fixedly mounted 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 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 rectangular 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 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 with 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 with the corresponding pushing plates 37, the springs 36 are four and sleeved on the outer sides of the corresponding guide rods 35, one ends of the springs 36 are connected with the pushing plates 37, the other ends of the springs 36 are connected with the inner wall of the bottom box 1, the supporting units are multiple and 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 on the corresponding expansion plates 29, the twisting handle 30 is connected with the top end of the spiral rod 32, the plastic pad 31 is rotatably connected with the bottom end of the spiral rod 32, the bottom expansion supporting mechanism is arranged for expanding the supporting area of the bottom box 1, and the supporting area of the bottom box 1 is expanded with the plastic pad 31 which is arranged to contact with the ground surface after the expansion unit is expanded.

In this embodiment, the expansion hole 33 has all been seted up to the both sides of bottom box 1, and expansion board 29 slides with the expansion 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 mouth of two through-holes 34 all is provided with the pulley, and wire rope 27 is connected with 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 are formed in both sides of the support box 6, the telescopic plate 8 is slidably connected to the corresponding telescopic holes 38, guide blocks 39 are fixedly mounted on the inner wall of the telescopic holes 38, guide grooves 40 are formed in the outer side of the telescopic plate 8, the guide blocks 39 are slidably connected to the inner wall of the guide grooves 40, and the guide blocks 39 and the guide grooves 40 are matched to ensure that the telescopic plate 8 stably slides in the telescopic holes 38.

In this embodiment, a supporting rod 26 is fixedly installed on the outer side of the rectangular column 5, the supporting rod 26 is connected with the bottom of the supporting 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, when the device is used, the device is integrally moved to the position below a floor slab to be supported through the universal wheel 2, the two telescopic motors 11 are switched on, 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 support box 6 and the first fireproof plate 7 to move upwards to be close to the floor slab, meanwhile, the rectangular column 5 drives the rotating rod 16 and the gear 19 to move upwards, the gear 19 moves upwards while rotating by virtue of 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 rotating rod 16 to rotate, the rotating rod 16 drives the two threaded rods 21 to rotate through the first bevel gear 24 and the two gears 25, the two threaded rods 21 drive the two telescopic plates 8 to mutually separate, the two telescopic plates 8 drive the two second fireproof plates 9 to mutually separate from each other, the support area of the support box 6 is enlarged, the support area of the floor slab is gradually enlarged as the support height increases, the support area of the two fireproof plates 7 and the second fireproof plates 9 and the floor slab respectively contact with the bottoms of the two telescopic motors 11, the two telescopic plates 27 drive the two expanding motors to mutually separate from each other, the expanding plates, the expansion plates 27 as the expansion plates, the expansion plates 29, the expansion plates 14 and the expansion unit gradually increases the stability of the support the two expanding plates, the expansion plates 29, the expansion plates, the expansion motor is increased, the expansion motor 37, the expansion motor is further increased, the expansion motor 37, rotate the hob 32 through turning round handle 30, hob 32 drives plastic pad 31 downstream and with ground contact, play the supporting role, can avoid universal wheel 2 and ground contact, the stability of bottom sprag has been increased, accomplish and build 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 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 support 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 at 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 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 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 slidably mounted in the supporting box 6, the tops of the two telescopic plates 8 are both connected with a second fireproof plate 9, a rotary rod 15 is formed in the top of the rectangular column 5, the rotary rod 15 is a through hole, a rotary 16 is rotatably mounted in the rotary hole 15, a driven gear 17 is fixedly mounted at the bottom end of the rotary rod 16, 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 mounted 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 of transmission, the driven gear 17 is matched with the rack 20 for use, the top end of the rotating rod 16 extends into the support box 6 and is fixedly provided with a first bevel gear 24, two threaded rods 21 are rotatably mounted in the support box 6, two second bevel gears 25 are fixedly mounted at the mutually close ends of the two threaded rods 21, and the two second bevel gears 25 are meshed with the first bevel gear 24, two threaded rods 21 all with 8 threaded connection of expansion plate, the 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, two downthehole one end that all is connected with wire rope 27 of steel wire, 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, 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 thread groove 22 is formed in the outer side of the retractable plate 8, and the threaded rod 21 is in threaded connection with the thread groove 22.

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 as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. A supporting device for construction of a 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 telescopic plates (8) are symmetrically and slidably mounted in the supporting box (6), the tops of the two telescopic plates (8) are both connected with a second fireproof plate (9), a circular hole (15) is formed in the top of the rectangular column (5), the circular hole (15) is a through hole, a rotating rod (16) is rotatably mounted in the circular hole (15), a driven gear (17) is fixedly mounted at the bottom end of the rotating rod (16), a rack (20) is fixedly mounted on the inner wall of the groove (10), a transmission unit (24) is connected between the rack (17), and a bevel gear (24) extends to the top end of the bevel gear (6), support box (6) internal rotation and install two threaded rods (21), the equal fixed mounting in one end that two threaded rods (21) are close to each other has second bevel gear (25), two second bevel gear (25) all mesh with first bevel gear (24), two threaded rods (21) all with expansion plate (8) threaded connection, the equal fixed mounting in both sides of square post (4) has flexible motor (11), equal fixed mounting has connecting block (12) on the output shaft of two flexible motors (11), two connecting block (12) all with the outside fixed connection of rectangle post (5), the steel wire hole has all been seted up on two connecting block (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) extends to in the steel wire hole and contacts with wire rope (27).

2. The supporting device for construction of the steel bar truss floor bearing plate according to claim 1, wherein the bottom expanding supporting mechanism comprises two expanding plates (29), two guide rods (35), two springs (36), two pushing plates (37) and a supporting unit, the two guide rods (35) are fixedly installed in the bottom box (1), the two expanding plates (29) and the two pushing plates (37) are both provided, the expanding plates (29) are connected with the corresponding pushing plates (37), the two pushing plates (37) are both slidably installed on the outer sides of the two guide rods (35), the steel wire ropes (27) are connected with the corresponding pushing plates (37), the four springs (36) are sleeved on the outer sides of the corresponding guide rods (35), one ends of the springs (36) are connected with the pushing plates (37), the other ends of the springs (36) are connected with the inner wall of the bottom box (1), and the supporting unit is provided with the plurality of expanding plates (29).

3. The supporting device for construction of the floor decks of the steel bar trusses 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 to the top end of the screw rod (32), and the plastic pad (31) is rotatably connected to 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 expanding holes (33) are formed in two sides of the bottom box (1), and the expanding plates (29) are connected with the corresponding expanding holes (33) in a sliding manner.

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 two sides of the supporting box (6), the telescopic plate (8) is slidably connected with the corresponding telescopic holes (38), guide blocks (39) are fixedly mounted on the inner wall of each telescopic hole (38), guide grooves (40) are formed in the outer side of each telescopic plate (8), and the guide blocks (39) are slidably connected with the inner walls of the guide grooves (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).