CN114541722B - Scaffold frame for building construction of adjustable height - Google Patents

Abstract

The utility model relates to the field of scaffolds, in particular to a scaffold for building construction, which comprises a plurality of support plates and lifting assemblies, wherein the support plates are arranged at intervals in the vertical direction, the lifting assemblies are arranged between every two adjacent support plates, each lifting assembly comprises two groups of lifting mechanisms symmetrically arranged on two sides of the support plate, each lifting mechanism comprises a pair of first connecting blocks which are connected with an upper support plate in a sliding manner, a pair of second connecting blocks which are connected with a lower support plate in a sliding manner, first connecting rods, two ends of which are respectively hinged with the first connecting blocks and the second connecting blocks, second connecting rods, two ends of which are respectively hinged with the first connecting blocks and the second connecting blocks, and driving pieces used for driving the second connecting blocks to be mutually close to or mutually far away from each other, and the first connecting rods and the second connecting rods are mutually hinged in the middle. The utility model has the effect of being convenient for adjusting the height of the scaffold.

Description

Scaffold frame for building construction of adjustable height

Technical Field

The utility model relates to the field of scaffolds, in particular to a height-adjustable scaffold for building construction.

Background

Scaffold refers to various supports erected at construction sites for workers to operate and to address vertical and horizontal transport. The general term of the building world refers to places on the building site where external walls, interior decorations or high floors cannot be directly constructed. Mainly for constructors to go up and down, or peripheral safety net maintenance, high altitude installation components, etc., what is said is a scaffold, scaffold manufacturing materials generally include: bamboo, wood, steel pipe, or synthetic material, etc. Some projects also use scaffolds as templates, and are widely used in advertising industry, municipal administration, traffic roads and bridges, mines and other departments.

The utility model of Chinese patent No. CN205369861U discloses a supporting scaffold for construction, which comprises a scaffold main supporting rod, a scaffold bottom plate, a plurality of groups of scaffold cross bar connecting components and a plurality of scaffold cross bars; the lower end of the scaffold main support rod is vertically arranged in the center of the top of the scaffold bottom plate, the plurality of groups of scaffold cross bar connecting components are respectively arranged on the scaffold main support rod at intervals, and the plurality of scaffold cross bars are respectively horizontally connected to the scaffold main support rod through the plurality of groups of scaffold cross bar connecting components; every group scaffold frame horizontal pole coupling assembling include fixed baseplate, cup joint the slot board, many connect inserted sheets, a plurality of horizontal poles insert a section of thick bamboo, a plurality of connecting bolt, polylith locking connection piece, cup joint through-hole, a plurality of inserted sheet through-hole and altitude indicator lamp.

In view of the above related art, the present inventors believe that the scaffold needs to be removed and reassembled according to the height of the building when encountering building construction at different heights during the use process, thereby affecting the normal use of the scaffold for building construction, so that the working efficiency of the scaffold for building construction is reduced, and the use efficiency of the scaffold for building construction is also reduced.

Disclosure of Invention

In order to facilitate the adjustment of the height of the scaffold, the utility model provides a scaffold for building construction, which can be adjusted in height.

The utility model provides a scaffold with adjustable height for building construction, which adopts the following technical scheme:

the utility model provides a scaffold frame for building construction of adjustable height, includes a plurality of backup pads that set up in vertical direction interval, sets up in every adjacent elevating system between two backup pads, elevating system including the symmetry set up in two sets of elevating system of backup pad both sides, elevating system includes sliding connection in a pair of first connecting block of upper backup pad, sliding connection in a pair of second connecting block of lower floor's backup pad, both ends articulate respectively in the head rod of first connecting block and second connecting block, both ends articulate respectively in the second connecting rod of first connecting block and second connecting block, be used for driving the second connecting block and be close to each other or the driving piece that keeps away from each other, be cross arrangement and middle part each other articulated between head rod and the second connecting rod.

Through adopting above-mentioned technical scheme, when needs adjust scaffold height, through the driving piece, make be located being close to each other or keep away from each other between two second connecting blocks in the lower floor's backup pad, under the effect of head rod and second connecting rod, two first connecting blocks that are located the upper strata backup pad are close to each other in step or keep away from each other, under the cooperation of two sets of elevating system of symmetry, thereby can promote to keep away from each other or the regulation that is close to each other between the upper and lower floor's backup pad, make whole scaffold height lift to suitable position, the staff of being convenient for uses.

Preferably, the driving piece comprises a bidirectional threaded screw rod rotatably supported on the supporting plate through a shaft seat, two ends of the bidirectional threaded screw rod are respectively provided with a positive threaded section and a negative threaded section with opposite threaded directions, the two second connecting blocks are respectively connected with the positive threaded section and the negative threaded section in a sliding manner, and a first driving device for driving the bidirectional threaded screw rod to synchronously rotate is arranged between the two groups of lifting mechanisms.

Through adopting above-mentioned technical scheme, through setting up two-way screw thread lead screw, when needs drive second connecting block remove, through first drive arrangement, make the two-way screw thread lead screw synchronous revolution in two sets of elevating system, under the cooperation of positive screw thread section and reverse screw thread section, make the second connecting block of both sides can carry out the motion that is close to each other or keeps away from each other, and through screw drive's mode for the second connecting block is through screw thread auto-lock after adjusting, simple operation.

Preferably, the lifting mechanism further comprises a fixing rod fixedly connected to the upper supporting plate and parallel to the bidirectional threaded screw rod, and the first connecting blocks are both slidably connected to the fixing rod.

Through adopting above-mentioned technical scheme, through setting up the dead lever, make first linkage piece sliding connection in the dead lever, reinforce the relation of connection between first linkage piece and the backup pad, make first linkage piece more stable in the removal in-process.

Preferably, the bottom surface fixedly connected with of backup pad is on a parallel with the first constant head tank of dead lever, first connecting block top all seted up with first constant head tank matched with first constant head tank, first connecting block pass through first constant head tank sliding connection in first constant head tank, backup pad top surface fixedly connected with is on a parallel with the second constant head tank of two-way screw rod, second connecting block bottom all seted up with second constant head tank matched with second constant head tank, the second connecting block pass through second constant head tank sliding connection in second constant head tank.

Through adopting above-mentioned technical scheme, under the cooperation of first constant head tank and first constant head zone, make and be sliding fit between first connecting block and the first constant head zone, under the cooperation of second constant head tank and second constant head zone, make and be sliding fit between second connecting block and the second constant head zone to promote the connection stability between first connecting block and second connecting block and the backup pad, and further limited the position appearance of first connecting block and second connecting block self.

Preferably, the thread profile of the positive thread section and the thread profile of the negative thread section are all provided with saw-tooth threads, a connecting hole for the bi-directional thread screw rod to pass through is formed in the first connecting block, a mounting groove extending along the radial direction of the connecting hole is formed in the inner wall of the connecting hole, connecting teeth matched with the bi-directional thread screw rod are connected in a sliding manner in the mounting groove, the connecting teeth are connected in the thread groove of the bi-directional thread screw rod in a threaded manner, a reset spring is arranged between the inner wall of the mounting groove and the connecting teeth, and when the first connecting block is close to each other, the connecting teeth are driven by the thread groove wall of the bi-directional thread screw rod to retract into the mounting groove.

Through adopting above-mentioned technical scheme, set up the screw thread profile of two-way screw thread lead screw into the cockscomb structure, make the second connecting block of both sides when carrying out the motion that is close to each other, in the mounting groove is withdrawed through the screw thread inslot wall drive connection tooth of two-way screw thread lead screw, can directly rise through the mode of lifting promptly between the adjacent two-layer backup pad, needn't drive through the rotation of two-way screw thread lead screw, promotes the efficiency of adjusting the scaffold frame.

Preferably, the first driving device comprises a shell, a worm rotatably supported in the shell, a pair of rotating shafts rotatably supported in the shell and parallel to each other, worm wheels coaxially and fixedly connected with the rotating shafts and meshed with the worm, a first driving motor fixedly installed outside the shell and connected with the worm, driving blocks provided with hexagonal grooves are fixedly connected at one ends of the bidirectional threaded screw rods, and hexagonal blocks matched with the hexagonal grooves are fixedly connected at one ends of the rotating shafts, extending out of the shell.

Through adopting above-mentioned technical scheme, under the cooperation of worm wheel, worm and axis of rotation, when need carry out synchronous drive to the two-way screw in the elevating system of two sets of correspondences, through pegging graft hexagonal piece one by one in the hexagonal inslot to start first driving motor, make first driving motor pass through the transmission of worm wheel worm and drive two axis of rotation in step and rotate, and under the cooperation of hexagonal piece and hexagonal inslot, carry out synchronous drive to two-way screw.

Preferably, the device further comprises a second driving device for driving the upper layer and the lower layer to be far away from each other between the supporting plates, the second driving device comprises a first fixing block, a second fixing block, a guide rod fixedly connected between the first fixing block and the second fixing block, a driving screw rod with two ends respectively rotatably supported between the first fixing block and the second fixing block, a moving block, a second driving motor, wherein the moving block is fixedly installed on the first fixing block and is connected with the driving screw rod, the inserting blocks are fixedly connected to the same sides of the first fixing block and the moving block, and inserting grooves matched with the inserting blocks are formed in the side walls of the supporting plates.

Through adopting above-mentioned technical scheme, under the cooperation of first fixed block, second fixed block, guide bar, drive lead screw and movable block, when the backup pad to adjacent both sides is carried out the lifting, through correspond the grafting piece and peg graft in the jack-in groove of backup pad lateral wall to start second driving motor, make second driving motor drive the drive lead screw rotatory, under the cooperation of guide bar, make the movable block remove towards the direction of second fixed block, thereby drive and keep away from each other between the backup pad, make the scaffold frame can rise fast.

Preferably, a step ladder is arranged between every two adjacent support plates, a through groove is formed in the upper support plate, one end of the step ladder is hinged in the through groove, the step ladder is rotatably stored in the through groove, and the adjacent two step ladders are arranged in a staggered manner in the horizontal direction.

Through adopting above-mentioned technical scheme, through setting up the step ladder, open the back at adjacent two-layer backup pad, the step ladder other end is followed logical inslot and is screwed out to the butt is in the backup pad of lower floor, so that the staff removes between the upper strata and the lower floor of scaffold frame, and the security is high.

Preferably, the top surface of the lower supporting plate is provided with a plurality of ratchets which are arranged along the line, and the bottom end of the step ladder is in a conical shape and is clamped with the ratchets.

Through adopting above-mentioned technical scheme, through setting up the ratchet, turn over the back of opening at the step ladder, its bottom joint is on the ratchet to make the step ladder whole more stable, be difficult for taking place to rock, and can play the supporting role to the backup pad of upper and lower two-layer, make the scaffold frame whole more stable.

Preferably, the bottom surface of the bottom-most supporting plate is provided with a plurality of self-locking universal wheels.

Through adopting above-mentioned technical scheme, through setting up the universal wheel in backup pad bottom to adjust and remove the position of scaffold frame, the staff of being convenient for carries out construction work.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. through setting up two sets of elevating system, drive upper and lower two-layer adjacent backup pad and adjust the interval, stable in structure, and under the cooperation of head rod and second connecting rod, can protect the staff, the security is high;

2. the scaffold is lifted by arranging the first driving device and the second driving device, so that the operation is convenient, and the storage is convenient;

3. through setting up the step to the staff removes between the upper strata and the lower floor of scaffold frame, and the security is high.

Drawings

Fig. 1 is a schematic overall structure of the present embodiment.

Fig. 2 is a partial sectional view of the present embodiment.

Fig. 3 is a partial cross-sectional view of the present embodiment.

Fig. 4 is a partial enlarged view of a portion a in fig. 2.

Fig. 5 is a schematic view of the structure of the inside of the first driving device in this embodiment.

Fig. 6 is a schematic structural diagram of the second driving device in the present embodiment.

Reference numerals illustrate: 1. a support plate; 2. a lifting assembly; 3. self-locking universal wheels; 4. a lifting mechanism; 5. a first connection block; 6. a second connection block; 7. a first connecting rod; 8. a second connecting rod; 9. a driving member; 10. a fixed rod; 11. a fixing seat; 12. a shaft seat; 13. a two-way threaded screw rod; 14. a connection hole; 15. a mounting groove; 16. a connecting tooth; 17. a return spring; 18. a first positioning belt; 19. a first positioning groove; 20. a second positioning belt; 21. a second positioning groove; 22. a first driving device; 23. a housing; 24. a worm; 25. a rotating shaft; 26. a worm wheel; 27. a first driving motor; 28. a driving block; 29. a hexagonal groove; 30. hexagonal blocks; 31. a second driving device; 32. a first fixed block; 33. a second fixed block; 34. a guide rod; 35. driving a screw rod; 36. a moving block; 37. a second driving motor; 38. a plug block; 39. a plug-in groove; 40. a step ladder; 41. a through groove; 42. a ratchet.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-6.

The embodiment of the utility model discloses a scaffold capable of adjusting the height for building construction. Referring to fig. 1-6, a scaffold for building construction with adjustable height comprises a plurality of support plates 1 arranged at intervals in the vertical direction and a lifting assembly 2 arranged between every two adjacent support plates 1, wherein the support plates 1 are rectangular and horizontally arranged, and self-locking universal wheels 3 are arranged at four corners of the bottom surface of the support plate 1 at the bottommost layer so as to adjust and move the position of the scaffold, thereby facilitating construction work of workers.

The lifting assembly 2 comprises two groups of lifting mechanisms 4 symmetrically arranged on two sides of the supporting plate 1 along the width direction of the supporting plate 1, wherein the lifting mechanisms 4 comprise a pair of first connecting blocks 5 which are connected with the upper supporting plate 1 in a sliding manner, a pair of second connecting blocks 6 which are connected with the lower supporting plate 1 in a sliding manner, first connecting rods 7 of which two ends are respectively hinged with the first connecting blocks 5 and the second connecting blocks 6, second connecting rods 8 of which two ends are respectively hinged with the first connecting blocks 5 and the second connecting blocks 6, driving pieces 9 for driving the second connecting blocks 6 to be close to or far away from each other, and fixing rods 10 fixedly connected with the upper supporting plate 1, the first connecting rods 7 and the second connecting rods 8 are arranged in a crossed manner, the middle parts of the first connecting rods and the second connecting rods are mutually hinged, two ends of the fixing rods 10 are fixedly connected with the bottom surface of the supporting plate 1 through fixing seats 11, and are arranged at intervals parallel to the supporting plate 1, and the first connecting blocks 5 are respectively connected with the fixing rods 10 in a sliding manner.

The driving piece 9 comprises a bidirectional threaded screw rod 13 rotatably supported on the supporting plate 1 through a shaft seat 12, two ends of the bidirectional threaded screw rod 13 are respectively provided with a positive threaded section and a reverse threaded section with opposite threaded directions, and the two second connecting blocks 6 are respectively connected with the positive threaded section and the reverse threaded section in a sliding manner.

When the scaffold height needs to be adjusted, through rotating the bidirectional threaded screw rod 13, two second connecting blocks 6 positioned on the lower supporting plate 1 are mutually close to or mutually far away from each other, under the action of the first connecting rods 7 and the second connecting rods 8, two first connecting blocks 5 positioned on the upper supporting plate 1 are mutually close to or mutually far away from each other synchronously, and under the cooperation of two symmetrical lifting mechanisms 4, the upper supporting plate 1 and the lower supporting plate 1 can be pushed to mutually close to each other or mutually close to adjust, so that the whole scaffold height is lifted to a proper position.

For improving the efficiency of scaffold rise, set up the screw thread type of positive screw thread section and reverse screw thread section into the cockscomb structure screw thread, connecting hole 14 that supplies two-way screw thread lead screw 13 to pass has all been seted up to first connecting piece 5, connecting hole 14 inner wall has been seted up along its radial extension's mounting groove 15, sliding connection has with two-way screw thread lead screw 13 matched with coupling tooth 16 in mounting groove 15, coupling tooth 16 threaded connection is in the screw thread inslot of two-way screw thread lead screw 13, be equipped with reset spring 17 between mounting groove 15 inner wall and the coupling tooth 16, when both sides first connecting piece 5 are close to each other, coupling tooth 16 withdraws in mounting groove 15 under the drive of the screw thread cell wall of two-way screw thread lead screw 13.

When the second connecting blocks 6 on two sides move close to each other, the connecting teeth 16 are driven by the inner walls of the thread grooves of the bidirectional thread screw 13 to retract into the mounting grooves 15, namely, the adjacent two layers of support plates 1 can be lifted in a lifting manner directly, and the driving is not needed by the rotation of the bidirectional thread screw 13.

For making first connecting block 5 and second connecting block 6 remove more stably, backup pad 1 bottom surface fixedly connected with is on a parallel with the first constant head zone 18 of dead lever 10, first constant head tank 19 with first constant head zone 18 matched with is all offered at first connecting block 5 top, first connecting block 5 passes through first constant head tank 19 sliding connection in first constant head zone 18, backup pad 1 top surface fixedly connected with is on a parallel with two-way screw thread lead screw 13's second constant head zone 20, second constant head tank 21 with second constant head zone 20 matched with is all offered to second connecting block 6 bottom, second connecting block 6 passes through second constant head tank 21 sliding connection in second constant head zone 20, promote the connection stability between first connecting block 5 and second connecting block 6 and the backup pad 1, and further limited the position appearance of first connecting block 5 and second connecting block 6 self.

In order to facilitate synchronous driving of the bidirectional threaded screw rods 13 in the two groups of lifting mechanisms 4 for synchronous rotation, a first driving device 22 is also arranged. The first driving device 22 comprises a shell 23, a worm 24 rotatably supported in the shell 23, a pair of rotating shafts 25 respectively rotatably supported in the shell 23 and mutually parallel, a worm wheel 26 respectively coaxially and fixedly connected with the rotating shafts 25 and meshed with the worm 24, a first driving motor 27 fixedly installed outside the shell 23 and connected with the worm 24, driving blocks 28 provided with hexagonal grooves 29 are fixedly connected at one ends of the bidirectional threaded screw rods 13, and hexagonal blocks 30 matched with the hexagonal grooves 29 are fixedly connected at one ends of the rotating shafts 25 and extend out of the shell 23.

When the two-way threaded screw rods 13 in the two corresponding lifting mechanisms 4 are required to be synchronously driven, the hexagonal blocks 30 are inserted into the hexagonal grooves 29 in a one-to-one correspondence mode, the first driving motor 27 is started, the first driving motor 27 synchronously drives the two rotating shafts 25 to rotate through the transmission of the worm 24 of the worm wheel 26, and the two-way threaded screw rods 13 are synchronously driven under the cooperation of the hexagonal blocks 30 and the hexagonal grooves 29.

In order to be convenient for carry out the lifting between two adjacent layers of backup pad 1, still be equipped with the second drive arrangement 31 that is used for driving keeping away from each other between upper and lower floor's backup pad 1, second drive arrangement 31 includes first fixed block 32 and second fixed block 33, fixed connection is in the guide bar 34 between first fixed block 32 and the second fixed block 33, both ends respectively rotate the drive lead screw 35 that supports between first fixed block 32 and second fixed block 33, sliding connection is in guide bar 34 and threaded connection in drive lead screw 35's movable block 36, fixed mounting is in first fixed block 32 and be connected in drive lead screw 35's second driving motor 37, the equal one side of first fixed block 32 and movable block 36 is all fixedly connected with grafting piece 38, grafting groove 39 with grafting piece 38 matched with has all been seted up to backup pad 1 lateral wall.

When the support plates 1 on two adjacent sides need to be lifted, the inserting blocks 38 are correspondingly inserted into the inserting grooves 39 on the side walls of the support plates 1, and the second driving motor 37 is started, so that the second driving motor 37 drives the driving screw rod 35 to rotate, and under the cooperation of the guide rods 34, the moving blocks 36 move towards the direction of the second fixed blocks 33, so that the support plates 1 are driven to be far away from each other, and the scaffold can be quickly lifted.

For the staff of being convenient for remove on every layer of backup pad 1, be equipped with step 40 between every adjacent two backup pads 1, and offered logical groove 41 on the upper supporting plate 1, step 40 one end articulates in logical inslot 41, and step 40 rotates and accomodates in logical inslot 41, and lower floor's backup pad 1 top surface is equipped with a plurality of ratchets 42 of arranging along the line, and step 40 bottom sets up to taper and joint in ratchet 42.

Through setting up step ladder 40, open the back at adjacent two-layer backup pad 1, the step ladder 40 other end is followed logical inslot and is screwed out the butt in the backup pad 1 of lower floor, and its bottom joint is between ratchet 42 to make step ladder 40 whole more stable, the staff of being convenient for removes between the upper strata and the lower floor of scaffold frame, and the security is high.

The embodiment of the utility model relates to a scaffold with adjustable height for building construction, which comprises the following implementation principles:

when the scaffold is required to be lifted, the two inserting blocks 38 of the second driving device 31 are inserted into the inserting grooves 39 of the side walls of the two adjacent layers of support plates 1 in a one-to-one correspondence manner, and the second driving motor 37 is started, so that the second driving motor 37 drives the driving screw rod 35 to rotate, and under the cooperation of the guide rod 34, the moving block 36 moves towards the direction of the second fixed block 33, so that the support plates 1 are driven to be away from each other, and the scaffold can be lifted rapidly.

When the scaffold is required to be lowered, the two hexagonal blocks 30 on the first driving device 22 are correspondingly inserted into the hexagonal grooves 29 at the end parts of the two-way threaded screw rods 13 one by one, the first driving motor 27 is started, the first driving motor 27 synchronously drives the two rotating shafts 25 to rotate through the transmission of the worm gear 26 and the worm 24, the two-way threaded screw rods 13 synchronously rotate under the cooperation of the hexagonal blocks 30 and the hexagonal grooves 29, the two second connecting blocks 6 positioned on the lower supporting plate 1 are driven to be mutually far away, the two first connecting blocks 5 positioned on the upper supporting plate 1 are mutually far away under the action of the first connecting rods 7 and the second connecting rods 8, and under the cooperation of the two symmetrical lifting mechanisms 4, so that the distance between the upper supporting plate 1 and the lower supporting plate 1 is reduced, and the whole scaffold is lowered to a proper position.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (7)

1. Height-adjustable scaffold for building construction, its characterized in that: the lifting mechanism comprises a plurality of supporting plates (1) arranged at intervals in the vertical direction, lifting assemblies (2) arranged between every two adjacent supporting plates (1), wherein each lifting assembly (2) comprises two groups of lifting mechanisms (4) symmetrically arranged on two sides of each supporting plate (1), each lifting mechanism (4) comprises a pair of first connecting blocks (5) which are connected with the upper supporting plate (1) in a sliding manner, a pair of second connecting blocks (6) which are connected with the lower supporting plate (1) in a sliding manner, first connecting rods (7) with two ends respectively hinged to the first connecting blocks (5) and the second connecting blocks (6), second connecting rods (8) with two ends respectively hinged to the first connecting blocks (5) and the second connecting blocks (6), and driving pieces (9) used for driving the second connecting blocks (6) to be close to each other or far away from each other, wherein the first connecting rods (7) and the second connecting rods (8) are arranged in a crossed manner, and the middle parts of the first connecting rods and the second connecting rods are mutually hinged;

the driving piece (9) comprises a bidirectional threaded screw rod (13) rotatably supported on the supporting plate (1) through a shaft seat (12), two ends of the bidirectional threaded screw rod (13) are respectively provided with a positive threaded section and a reverse threaded section with opposite threaded directions, the two second connecting blocks (6) are respectively and slidably connected with the positive threaded section and the reverse threaded section, and a first driving device (22) for driving the bidirectional threaded screw rod (13) to synchronously rotate is arranged between the two groups of lifting mechanisms (4);

the screw thread type of the positive thread section and the screw thread type of the reverse thread section are both provided with zigzag threads, the first connecting block (5) is provided with a connecting hole (14) for the bi-directional screw thread screw rod (13) to pass through, the inner wall of the connecting hole (14) is provided with a mounting groove (15) extending along the radial direction of the connecting hole, the mounting groove (15) is internally and slidably connected with a connecting tooth (16) matched with the bi-directional screw thread screw rod (13), the connecting tooth (16) is in threaded connection with the screw thread groove of the bi-directional screw thread screw rod (13), a reset spring (17) is arranged between the inner wall of the mounting groove (15) and the connecting tooth (16), and when the first connecting block (5) at two sides are mutually close, the connecting tooth (16) is retracted into the mounting groove (15) under the driving of the screw thread groove wall of the bi-directional screw thread screw rod (13).

The device is characterized by further comprising a second driving device (31) used for driving the upper layer and the lower layer to be away from each other between the supporting plates (1), wherein the second driving device (31) comprises a first fixed block (32) and a second fixed block (33), a guide rod (34) fixedly connected between the first fixed block (32) and the second fixed block (33), driving screw rods (35) with two ends respectively rotatably supported between the first fixed block (32) and the second fixed block (33), moving blocks (36) which are slidably connected with the guide rod (34) and are in threaded connection with the driving screw rods (35), a second driving motor (37) fixedly installed on the first fixed block (32) and connected with the driving screw rods (35), plug-in blocks (38) are fixedly connected to the same sides of the first fixed block (32) and the moving blocks (36), and plug-in grooves (39) matched with the plug-in blocks (38) are formed in the side walls of the supporting plates (1).

2. A height-adjustable scaffolding for building construction according to claim 1, wherein: the lifting mechanism (4) further comprises a fixing rod (10) fixedly connected to the upper supporting plate (1) and parallel to the two-way threaded screw rod (13), and the first connecting blocks (5) are both slidably connected to the fixing rod (10).

3. A height-adjustable scaffolding for use in building construction according to claim 2, wherein: the utility model discloses a fixing device for a bicycle, including backup pad (1), backup pad (1) bottom surface fixedly connected with be on a parallel with first locating belt (18) of dead lever (10), first connecting block (5) top all seted up with first locating belt (18) matched with first constant head tank (19), first connecting block (5) pass through first constant head tank (19) sliding connection in first locating belt (18), backup pad (1) top surface fixedly connected with be on a parallel with second locating belt (20) of two-way screw lead screw (13), second connecting block (6) bottom all seted up with second locating belt (20) matched with second constant head tank (21), second connecting block (6) pass through second constant head tank (21) sliding connection in second locating belt (20).

4. A height-adjustable scaffolding for building construction according to claim 1, wherein: the first driving device (22) comprises a shell (23), a worm (24) rotatably supported in the shell (23), a pair of rotating shafts (25) rotatably supported in the shell (23) and parallel to each other, worm wheels (26) coaxially and fixedly connected with the rotating shafts (25) and meshed with the worm (24), a first driving motor (27) fixedly mounted outside the shell (23) and connected with the worm (24), driving blocks (28) provided with hexagonal grooves (29) are fixedly connected at one ends of the bidirectional threaded screw rods (13), and hexagonal blocks (30) matched with the hexagonal grooves (29) are fixedly connected at one ends of the rotating shafts (25) and extend out of the shell (23).

5. A height-adjustable scaffolding for building construction according to claim 1, wherein: every two adjacent backup pad (1) between all be equipped with step ladder (40), and set up on upper supporting plate (1) along vertical direction run through groove (41), step ladder (40) one end articulate in lead to groove (41), just step ladder (40) rotate accomodate in lead to groove (41), be crisscross setting in the horizontal direction between two adjacent step ladder (40).

6. The height-adjustable scaffold for building construction according to claim 5, wherein: the top surface of the lower supporting plate (1) is provided with a plurality of ratchets (42) which are arranged along the line, and the bottom end of the step ladder (40) is arranged into a cone shape and is clamped with the ratchets (42).

7. A height-adjustable scaffolding for building construction according to claim 1, wherein: the bottom surface of the support plate (1) at the bottommost layer is provided with a plurality of self-locking universal wheels (3).