CN114837390A

CN114837390A - Outer wall whitewashes uses safe lift platform for building engineering construction

Info

Publication number: CN114837390A
Application number: CN202210722686.XA
Authority: CN
Inventors: 郭雄伟; 刘东平; 秦宏勋; 李云; 李晨阳; 谢月明
Original assignee: China Construction Seventh Engineering Bureau Shanghai Corp Ltd
Current assignee: China Construction Seventh Engineering Bureau Shanghai Corp Ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-08-02
Anticipated expiration: 2042-06-24
Also published as: CN114837390B

Abstract

The invention discloses a safe lifting platform for plastering an outer wall for building engineering construction, which comprises a lifting mechanism and a bearing mechanism, wherein the lifting mechanism is arranged on the outer wall; the bearing mechanism comprises a bearing frame and a widened stepping structure arranged at the bottom of the bearing frame, and the widened stepping structure is provided with an extensible protective structure; the bearing frame is also provided with a material bearing structure and a windproof structure. The material bearing structure is used for placing the coating, so that the repeated bending of a constructor for picking up and painting the coating is avoided, the large continuous bending action range is avoided, and safety accidents are easy to happen; the protection structure protects the high-altitude constructors, prevents the phenomenon of falling when stepping on the ground, and improves the safety; the protective structure can be arranged in an extensible manner, so that the safe lifting platform can be used on both sides without being divided into a front side and a back side; through widening the trampling structure, the trampling area of the working personnel and the placement area of the painting tool are improved, and the painting operation is more convenient. Make this whitewash with safe lift platform, the function is comprehensive, and the security is high.

Description

Outer wall whitewashes uses safe lift platform for building engineering construction

Technical Field

The invention relates to the technical field of painting equipment, in particular to a safe lifting platform for painting an outer wall for constructional engineering construction.

Background

Whitewashing refers to a cleaning or application device made of bunched hair palm or the like: the brush, the brush and the scrubbing brush refer to tools for filling powder or protective layers smeared on the surfaces of buildings, and the outer wall painting refers to surface layer engineering for smearing cement mortar, mixed mortar and lime mortar on wall surfaces.

When whitewashing the outer wall of building, current whitewash and use lift platform because the function is single, has following defect:

1. the method has the advantages that the worker continuously bends to pick up the painting coating, meanwhile, the worker also needs to hold the painting tool with one hand and take the paint and other coatings with the other hand to paint the wall, so that the labor intensity of the worker is increased, meanwhile, the worker continuously bends in the high-altitude operation state, the action amplitude is large, and safety accidents are easy to happen in the painting process;

2. in windy weather, the undried paint which is already coated on the outer wall can move along a certain line under the action of the windy weather, so that the painting effect is reduced, and the paint in the next or previous painting area is damaged due to uneven thickness; meanwhile, the coating can drip after being dipped, and the coating can be scraped to an adjacent painting area in windy weather, so that the thickness and the color of the coating are different, and the painting effect is influenced;

3. the traditional lifting platform has the disadvantages of complex assembly process, complex steps and low assembly efficiency, and the construction period is seriously influenced;

4. traditional lifting platform for whitewashing, the region of trampling is comparatively limited, and then leads to the limitation of use higher, can't adjust according to the in service behavior and trample the scope, and the practicality is lower, and the flexibility is also relatively poor, in view of this, to the above-mentioned problem in-depth research, the present case of tunneling out produces.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a safe lifting platform for plastering an outer wall for building engineering construction, which solves the problem that the lifting platform for plastering in the prior art has single function.

The technical scheme of the invention is realized as follows:

a safe lifting platform for plastering an outer wall for building engineering construction comprises a lifting mechanism and a bearing mechanism arranged on the lifting mechanism; the bearing mechanism comprises a bearing frame and a widened stepping structure arranged at the bottom of the bearing frame, and the widened stepping structure is provided with an extensible protection structure; the bearing frame is also provided with a material bearing structure and a windproof structure.

Furthermore, the bearing frame is a U-shaped frame, and the widened treading structure comprises an extractable treading plate and an openable expansion plate which are arranged at the bottom of the bearing frame and are used for supporting the treading plate; the bottom of the bearing frame is provided with a space for accommodating a pedal and an opening and closing driving mechanism for driving the expansion board to open and close.

Further, the opening and closing drive mechanism includes: the device comprises a pair of tension rods, two groups of moving seats, four expansion plates and four push rods; the bottom of the bearing frame is provided with an inner cavity for accommodating the split-wire rods, the split-wire rods are rotatably connected in the inner cavity at the bottom of the bearing frame, the two groups of moving seats are respectively screwed on the outer sides of the split-wire rods, and the moving seats are in sliding fit with the bearing frame; the one end of four expansion boards with bear the frame and articulate so that the expansion board is rotatable to open and shut, the other end of four expansion boards and remove and articulate respectively between the seat have four the catch bar drives the catch bar and promotes the expansion board and open the pedal that is used for supporting the pull out through removing the seat.

Furthermore, the protective structure comprises a rotating shaft rotatably arranged on the pedal and a protective net wound on the rotating shaft, and the rotating shaft is connected with the pedal through a coil spring; the bearing frame is provided with a protection fixing structure for fixing the unfolded protective net.

Further, the protective fixing structure includes: four pull rods, four bolts and four handles; the four pull rods are respectively arranged on two sides of the top end of the bearing frame, openings are formed in the lower sides of the pull rods, the four bolts are respectively in threaded connection with the four pull rods and can penetrate through the openings, and the four handles are respectively connected to the four bolts.

Further, the material load-bearing structure comprises: the bearing plate comprises two drawing plates and a bearing plate, wherein the two drawing plates are detachably arranged at two ends of the upper portion of the bearing plate respectively, one side, opposite to the two drawing plates, of each drawing plate is provided with a vertical first groove, and two ends of the bearing plate are located in the first grooves respectively.

Further, the wind-proof structure includes: a slide bar and a baffle; one side that two pull boards are relative all is equipped with vertical second recess, the both ends of slide bar are located two respectively in the second recess, the baffle slip cap is established in the outside of slide bar, and the baffle is equipped with and agrees with and sliding fit's cell body with the bearing plate.

Furthermore, a fixing component for fixing the drawing plate is arranged on the bearing frame; the fixing assembly includes: a plurality of bolts and a plurality of holding rods; the bearing frame and the drawing plate are respectively provided with a plurality of jacks, a plurality of bolts are respectively inserted into the plurality of jacks, and two ends of the plurality of holding rods are respectively connected between the plurality of bolts.

Further, the lifting mechanism includes: the lifting device comprises a frame and a mounting plate which are arranged in parallel, two right supporting plates and two left supporting plates which are arranged in a crossed manner, and a lifting driving structure; the frame is rectangular frame, two the bottom of right branch fagging articulates on the right side of frame, two the bottom of left branch fagging articulates in the left side of frame, the mounting panel sets up the top at right branch fagging and left branch fagging, the bottom of bearing the frame is connected on the top of mounting panel, lift drive structure installs at frame and two on the right branch fagging.

Further, the lifting driving structure includes: the hydraulic cylinder comprises a bottom plate, a fixed plate and two hydraulic cylinders; the bottom plate sets up in the frame, the fixed plate is connected two between the right branch fagging, two the bottom of pneumatic cylinder articulates on the bottom plate, two the flexible end of pneumatic cylinder articulates respectively on the fixed plate.

The invention has the beneficial effects that:

1. the device can limit the painted area through the baffle, the edge is clearly painted, more accurate outer wall patterns can be conveniently drawn, the painting effect is greatly improved, meanwhile, the baffle effectively prevents the situation that in strong wind weather, the undried paint which is already painted on the outer wall can pass through the action of strong wind, so that the material moves along a certain line, the paint thickness of the next or previous painting area is uneven, the paint is damaged, meanwhile, the dripping phenomenon can occur after the paint is dipped, in strong wind weather, the paint can be scraped to the adjacent painting area, the paint thickness and the color are different, and the painting effect is reduced;

2. the windproof structure can be used for determining whether to be installed or not according to the actual situation, the windproof structure can be disassembled, the flexibility is higher, the bearing plate can be used for placing painting materials, so that workers do not need to bend down to pick up the materials, and the problems that potential safety hazards are high and personal safety of the workers is not facilitated due to large action amplitude and high-altitude operation are solved;

3. the top end of the protective net is fixed on the pull rod, so that the phenomenon that a worker falls off when stepping on the ground is prevented, the safety is improved, when a windproof structure is not required to be installed, the bearing frame does not need to distinguish the front and the back, the device can be directly moved to the position near the outer wall and can be used, and the convenience in use is improved;

4. this device is through under the mutually supporting effect to the pull screw rod, remove seat and catch bar, begins to promote the expansion board, then two adjacent expansion boards with bear the frame perpendicularly, then alright take the pedal out for the bottom of pedal is located the expansion board, carries out the bearing to the pedal, and then has improved staff's the area of trampling and whitewash the area that prevents of material, the more operation of being convenient for whitewash.

Drawings

In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a carrying mechanism of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic front view of the present invention;

FIG. 5 is a partial enlarged view of B in FIG. 4;

FIG. 6 is a schematic side view of the present invention;

FIG. 7 is a schematic view of the present invention;

fig. 8 is a schematic cross-sectional view of the rotating shaft of the present invention.

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. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1 to 8, the safety lifting platform for plastering an outer wall for construction engineering in embodiment 1 includes a lifting mechanism and a bearing mechanism disposed on the lifting mechanism; the bearing mechanism comprises a bearing frame 1 and a widened stepping structure arranged at the bottom of the bearing frame 1, and the widened stepping structure is provided with an extensible protective structure; the bearing frame 1 is also provided with a material bearing structure. The material bearing structure is used for placing the coating, so that the condition that a constructor bends over frequently to pick up and paint the coating is avoided, the condition that the constructor bends over continuously in a high-altitude operation state is avoided, the action amplitude is large, and safety accidents are easy to happen in the painting process. The protection structure is used for protecting the high-altitude construction personnel, so that the phenomenon that the working personnel falls off when stepping on the ground is prevented, and the safety is improved; and protective structure can extend the setting for this safe lift platform need not divide the positive and negative, and both sides all can use, and when using one side to whitewash the construction, opposite side protective structure expandes and protects. Through widening the trampling structure, the trampling area of the working personnel and the placement area of the painting tool are improved, and the painting operation is more convenient. Make this whitewash with safe lift platform, the function is comprehensive, and the security is high.

Further, as shown in fig. 1 and 2, the carrier 1 is a "U" shaped frame, the widening pedal structure includes two retractable pedals 2 and four openable and closable expansion boards 17 for supporting the pedals 2, and the pedals 2 and the expansion boards 17 are both arranged at the bottom of the carrier 1; the bottom of the bearing frame 1 is provided with a space for accommodating the pedal 2, the pedal 2 is arranged in the space in a sliding manner so as to be drawn and pulled conveniently, and the pedal 2 slides along the width direction of the bearing frame 1. The pedal 2 pulled out is supported by opening the expansion plate 17, the stability of the pedal 2 is improved, and when the pedal 2 retracts to the bearing frame 1, the expansion plate 17 is folded at the bottom of the bearing frame 1; the bottom of the bearing frame 1 is also provided with an opening and closing driving mechanism for driving the expansion board 17 to open and close.

Further, as shown in fig. 4 and 5, the opening and closing driving mechanism includes: two opposite tension rod 15, two groups of moving seats 16, four expansion plates 17 and four push rods 18; the bottom of the bearing frame 1 is provided with an inner cavity for accommodating a split-draw bar 15, the split-draw bar 15 is rotatably connected in the inner cavity at the bottom of the bearing frame 1, and the split-draw bar 15 is arranged along the length direction of the bearing frame 1; the two groups of moving seats 16 are respectively screwed at the outer sides of the opposite tension screw rods 15, the moving seats 16 are in sliding fit with the bottom of the bearing frame 1, the longitudinal sections of the inner cavity of the bottom of the bearing frame 1 and the moving seats 16 are rectangular, and the moving seats 16 are limited by the inner cavity of the bottom of the bearing frame 1, cannot rotate and can only move along the length direction of the bearing frame 1; the outer ends of the four expansion boards 17 are respectively hinged with the two ends of the bottom of the bearing frame 1 so that the expansion boards 17 can be opened and closed in a rotating mode, and four push rods 18 are respectively hinged between the other ends of the four expansion boards 17 and the moving seat 16, namely the two ends of each push rod 18 are hinged with the expansion boards 17 and the moving seat 16. The movement of the movable seat 16 drives the swinging of the push rod 18, thereby pushing the expansion board 17 to open the treadle 2 for supporting the pull-out. The outer end of the opposite tension rod 15 penetrates through the bearing frame 1 and then is connected with a hand wheel 19 for rotating the opposite tension rod 15.

In the specific implementation process, it should be noted that, when the device is used, a worker can rotate the opposite tension rod 15, under the limitation of the thread of the opposite tension rod 15, the moving seat 16 screwed outside starts to move, the pushing rod 18 starts to move, the expansion plates 17 start to be pushed, then the two adjacent expansion plates 17 are perpendicular to the bearing frame 1, and then the pedal 2 can be drawn out, so that the bottom end of the pedal 2 is located on the expansion plates 17, the pedal 2 is subjected to bearing, the treading area of the worker and the prevention area of the material to be painted are increased, and the painting operation is facilitated.

When this device is using, through the rise of elevating system, it begins to rise to drive to bear frame 1, rise to suitable height after, elevating system stops to rise, when using, the steerable expansion board 17 of staff expandes, then pull out pedal 2 from the bottom that bears frame 1 and support on expansion board 17, and then increased staff's the space of trampling, the material also can be placed on bearing frame 1 and pedal 2, trampling area has been increased, the security that the staff trampled has been improved, the placing to whitewash the material also is convenient for simultaneously.

Embodiment 2, which is different from embodiment 1 in that, as shown in fig. 2, 3, 6 and 8, the guard structure includes a rotating shaft 3 rotatably provided on a pedal 2 and a protection net 4 wound around the rotating shaft 3. The outer end of the pedal 2 is exposed out of the bearing frame 1, and the end part of the pedal 2 is provided with a protective structure. A cavity with an opening at the upper end is arranged at the corresponding position of the pedal 2, the rotating shaft 3 is connected in the cavity of the pedal 2 through a coil spring, the protective net 4 penetrates out of the opening of the cavity, and a fixing strip is arranged at the outer end of the protective net 4 and is exposed out of the opening, so that the protective net is convenient to unfold. The bearing frame 1 is provided with a protection fixing structure for fixing the unfolded protection net 4. Both sides of the bearing frame 1 of the invention are provided with pedals 2 which can be drawn out. When the pedal 2 on one side is used, the pedal 2 on the other side is in a state of retracting the bottom of the bearing frame 1, and the protective net 4 on the side can be pulled out for protection.

Further, as shown in fig. 3 and 6, the shield fixing structure includes: four tie rods 11, four bolts 13 and four handles 14; the four pull rods 11 are respectively arranged on two sides of the top end of the bearing frame 1, notches 12 are respectively formed in the lower sides of the pull rods 11, the four bolts 13 are respectively screwed on the four pull rods 11 and can penetrate through the notches 12, and the four handles 14 are respectively connected to the four bolts 13.

When whitewashing, can take out protection network 4 from step 2, protection network 4 makes pivot 3 rotatory under through the effect of wind spring, and then makes protection network 4 shrink to step 2 in, at protection network 4 in-process of taking out, pivot 3 begins to rotate, and the top of protection network 4 is fixed through protection fixed knot structure, and protection network 4's setting, when whitewashing, the empty condition is stepped on to the staff, has improved the security.

In the concrete implementation process, it should be noted that, when needs fix the top of protection network 4, laminate the top of protection network 4 with four openings 12 on the pull rod 11, then turning handle 14, it is rotatory to drive bolt 13 through handle 14, fix the top of protection network 4 on pull rod 11 thereupon, prevent that the staff from stepping on the phenomenon that the sky falls, the security has been improved, when need not to install windproof structure, bear frame 1 and need not to distinguish anti-positive, can directly remove this device near the outer wall, alright use, the convenience of use has been improved.

Example 3, which differs from example 1 in that, as shown in figure 1, the load bearing structure of matter comprises: two pull boards 5 and bearing plate 8, two pull board 5 is removable the setting respectively and is bearing the upper portion both ends of frame 1, and two one sides that pull board 5 is relative all are equipped with vertical first recess 6, and the bottom of first recess 6 is sealed, the both ends of bearing plate 8 are located two respectively support in the first recess 6 and place the bottom at first recess 6.

Embodiment 4, which differs from embodiment 3 in that the carrier 1 is provided with fixing elements for fixing the drawer plates 5, as shown in fig. 2; the fixing assembly includes: a plurality of bolts 21 and a plurality of holding rods 22; bear 1 upper portion both ends and be equipped with the logical groove that supplies the pull board 5 to insert, all be equipped with a plurality of jack 20 on bearing 1 and the pull board 5, a plurality of bolt 21 inserts a plurality of respectively on the jack 20, a plurality of the both ends of holding rod 22 are connected respectively in a plurality of between the bolt 21.

In the specific implementation process, it should be noted that, when the pull plates 5 need to be installed, the pull plates 5 are inserted into the through grooves of the bearing frame 1, then the holding rod 22 is held by a worker, the plug pins 21 are inserted into the insertion grooves, and then the fixing of the two pull plates 5 is completed, and further the installation of the bearing plate 8 is completed.

Embodiment 5, which differs from embodiment 3 in that the loading frame 1 is also provided with a wind-proof structure, as shown in fig. 1. The wind-proof structure includes: a slide bar 9 and a baffle 10; two relative one sides of pull board 5 all are equipped with vertical second recess 7, and second recess 7 is parallel with first recess 6 and the interval sets up, and the bottom of second recess 7 also seals. Two ends of the sliding rod 9 are respectively positioned in the two second grooves 7 and supported at the bottom ends of the second grooves 7. The baffle 10 is slidably sleeved on the outer side of the sliding rod 9, and a groove body which is matched with the bearing plate 8 in a sliding fit manner is arranged on the lower side of the baffle 10, so that the lower side of the baffle 10 can be clamped on the bearing plate 8 to slide, and the stability of the baffle 10 is further improved. In addition, one side of each of the two baffles 10 is provided with an inclined surface.

In the specific implementation process, it should be noted that, when the wind power is large, in order to facilitate the worker to paint the outer wall, the drawing plate 5 is drawn out, then the two ends of the bearing plate 8 are lapped at the two first grooves 6, then the two baffles 10 are sleeved at the outer side of the sliding rod 9, after the two ends of the sliding rod 9 are lapped at the two second grooves 7, at this time, the bottom ends of the baffles 10 are also clamped on the bearing plate 8, so that the baffles 10 are more stable, when the worker paints, the two baffles 10 are moved, so that the painting position is located between the two baffles, the worker starts to paint, an inclined plane is arranged between the two baffles 10, so as to facilitate guiding the wind, reduce the impact force of the wind on the baffles 10, and at the same time, the baffles 10 can limit the painting area, clearly paint the edge, so as to facilitate drawing of a more accurate outer wall pattern, and at the same time, the baffles 10 effectively prevent the weather from strong wind, the not dry coating of having scribbled at the outer wall can pass through under the effect of strong wind, make the material remove along a certain circuit, make next or last one whitewash regional coating thickness uneven, cause destruction to it, the coating can take place the phenomenon of dripping after dipping in simultaneously, under the weather of strong wind, the coating can be scraped to adjacent whitewash the region, cause coating thickness and colour to differ, the emergence of effect phenomenon is paintd in the influence, it can be installed and use according to the required decision of actual conditions to prevent wind the structure, prevent wind the structure and can dismantle, the flexibility is higher, the material of whitewashing can be placed to bearing plate 8, make the staff need not to bow to pick up the material, prevent to cause the potential safety hazard higher because staff's action range is great and high altitude construction, be unfavorable for the condition of personnel's personal safety.

Embodiment 6, which is different from embodiment 1 in that, as shown in fig. 4, the elevating mechanism includes: the lifting device comprises a frame 23 and a mounting plate 26 which are arranged in parallel, two right supporting plates 24 and two left supporting plates 25 which are arranged in a crossed manner, and a lifting driving structure; the middle of the two right support plates 24 and the two left support plates 25 are hinged by a center rod 27. The frame 23 is rectangular frame, two the bottom of right branch fagging 24 articulates on the right side of frame 23, two the bottom of left branch fagging 25 articulates the left side at frame 23, mounting panel 26 sets up the top at right branch fagging 24 and left branch fagging 25, the bottom at bearing frame 1 is connected on mounting panel 26's top, lift drive structure installs at frame 23 and two on the right branch fagging 24.

In the specific implementation process, it should be noted that, because the left support plate 25 and the right support plate 24 are mutually crossed, and the middle of the left support plate 25 is connected with the center rod 27, under the action of the driving structure, an included angle between the upper ends of the left support plate 25 and the upper end of the right support plate 24 is reduced, and at this time, the bottom end of the left support plate 25 moves on the frame 23, so that the ascending effect of the mounting plate 26 is realized, and the ascending effect of the bearing frame 1 is further completed.

Embodiment 7, which is different from embodiment 6 in that the elevation drive structure includes: a base plate 28, a fixed plate 29 and two hydraulic cylinders 30; the bottom plate 28 is arranged in the frame 23, the fixing plate 29 is connected between the two right supporting plates 24, the bottom ends of the two hydraulic cylinders 30 are hinged on the bottom plate 28, and the telescopic ends of the two hydraulic cylinders 30 are respectively hinged on the fixing plate 29.

In the specific implementation process, it should be noted that the bottom plate 28 is connected to the frame 23 and is configured to be installed on the hydraulic cylinder 30, the hydraulic cylinder 30 starts to extend to push the fixing plate 29, then the included angle between the right support plate 24 and the frame 23 is increased, at this time, under the action of the central rod 27, the left support plate 25 moves rightward on the frame 23, the lifting of the mounting plate 26 is completed, and the lifting of the bearing plate is achieved.

Embodiment 8 differs from embodiment 7 in that support bases 31 are respectively attached to four corner portions of the bottom end of the frame 23. In the specific implementation, it should be noted that the supporting seat 31 is in contact with the ground for supporting the frame 23.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a building engineering construction whitewashes with safe lift platform which characterized in that with outer wall: comprises a lifting mechanism and a bearing mechanism arranged on the lifting mechanism; the bearing mechanism comprises a bearing frame (1) and a widened stepping structure arranged at the bottom of the bearing frame (1), and the widened stepping structure is provided with an extensible protective structure; the bearing frame (1) is also provided with a material bearing structure and a windproof structure.

2. The safe lifting platform for plastering exterior walls for constructional engineering construction as claimed in claim 1, wherein: the bearing frame (1) is a U-shaped frame, and the widened treading structure comprises drawable treadles (2) and an openable expansion plate (17) which are arranged at the bottom of the bearing frame (1) and are used for supporting the treadles (2); the bottom of the bearing frame (1) is provided with a space for accommodating the pedal (2) and an opening and closing driving mechanism for driving the expansion board (17) to open and close.

3. The safe lifting platform for plastering exterior walls for constructional engineering construction as claimed in claim 2, wherein: the opening and closing driving mechanism comprises: the device comprises a pair of tension rods (15), two groups of moving seats (16), four expansion plates (17) and four push rods (18); the bottom of the bearing frame (1) is provided with an inner cavity for accommodating a split bar (15), the split bar (15) is rotatably connected in the inner cavity at the bottom of the bearing frame (1), two groups of moving seats (16) are respectively screwed at the outer sides of the split bar (15), and the moving seats (16) are in sliding fit with the bearing frame (1); one end of each of the four expansion boards (17) is hinged with the bearing frame (1) so that the expansion boards (17) can be opened and closed in a rotating mode, four push rods (18) are hinged between the other ends of the four expansion boards (17) and the moving seat (16) respectively, and the moving seat (16) drives the push rods (18) to push the expansion boards (17) to open the pedals (2) used for supporting the drawing and pulling.

4. The safe lifting platform for plastering exterior walls for construction engineering construction according to any one of claims 1 to 3, wherein: the protective structure comprises a rotating shaft (3) rotatably arranged on the pedal (2) and a protective net (4) wound on the rotating shaft (3), and the rotating shaft (3) is connected with the pedal (2) through a coil spring; the bearing frame (1) is provided with a protection fixing structure for fixing the unfolded protective net (4).

5. The safe lifting platform for plastering exterior walls for constructional engineering construction as claimed in claim 4, wherein: the protective fixing structure comprises: four pull rods (11), four bolts (13) and four handles (14); four pull rods (11) are respectively arranged on two sides of the top end of the bearing frame (1), openings (12) are formed in the lower sides of the pull rods (11), four bolts (13) are respectively screwed on the four pull rods (11) and can penetrate through the openings (12), and the four handles (14) are respectively connected on the four bolts (13).

6. The safe lifting platform for exterior wall painting for constructional engineering construction as claimed in any one of claims 1 to 3 or 5, wherein: the material load-bearing structure comprises: two pull boards (5) and bearing board (8), two pull board (5) are removable the setting respectively and are bearing the upper portion both ends of frame (1), and one side that two pull boards (5) are relative all is equipped with vertical first recess (6), the both ends of bearing board (8) are located two respectively in first recess (6).

7. The safe lifting platform for plastering exterior walls for constructional engineering construction as claimed in claim 6, wherein: the wind-proof structure includes: a sliding rod (9) and a baffle (10); one side that two pull boards (5) are relative all is equipped with vertical second recess (7), the both ends of slide bar (9) are located two respectively in second recess (7), baffle (10) slip cap is established in the outside of slide bar (9), and baffle (10) are equipped with and agree with bearing plate (8) and sliding fit's cell body.

8. The safe lifting platform for plastering exterior walls for constructional engineering construction as claimed in claim 6, wherein: a fixing component for fixing the drawing plate (5) is arranged on the bearing frame (1); the fixing assembly includes: a plurality of bolts (21) and a plurality of holding rods (22); the bearing frame (1) and the drawing plate (5) are respectively provided with a plurality of jacks (20), the bolts (21) are respectively inserted into the jacks (20), and the two ends of the holding rod (22) are respectively connected between the bolts (21).

9. The safe lifting platform for plastering exterior walls for construction according to any one of claims 1 to 3, 5, 7 or 8, wherein: the lifting mechanism comprises: the lifting device comprises a frame (23) and a mounting plate (26) which are arranged in parallel, two right supporting plates (24) and two left supporting plates (25) which are arranged in a crossed manner, and a lifting driving structure; frame (23) are rectangular frame, two the bottom of right branch fagging (24) articulates on the right side of frame (23), two the bottom of left branch fagging (25) articulates the left side at frame (23), mounting panel (26) set up the top at right branch fagging (24) and left branch fagging (25), the top of mounting panel (26) is connected in the bottom that bears frame (1), lift drive structure installs at frame (23) and two on right branch fagging (24).

10. The safe lifting platform for plastering exterior walls for constructional engineering construction as claimed in claim 9, wherein: the lifting driving structure comprises: a bottom plate (28), a fixed plate (29) and two hydraulic cylinders (30); the bottom plate (28) is arranged in the frame (23), the fixing plate (29) is connected between the two right supporting plates (24), the bottom ends of the two hydraulic cylinders (30) are hinged to the bottom plate (28), and the telescopic ends of the two hydraulic cylinders (30) are hinged to the fixing plate (29) respectively.