CN115450409B - Scaffold supporting system without tension joint and supporting method - Google Patents

Abstract

The application relates to a scaffold supporting system without a pull node and a building method, wherein the main technical scheme is that the scaffold supporting system without the pull node comprises a backing plate and a plurality of layers of scaffolds which are sequentially arranged from bottom to top, and the height-width ratio of the scaffold is less than 2.0; each scaffold is a first-layer scaffold, a middle-layer scaffold and a top-layer scaffold from bottom to top, wherein the width and the height of the first-layer scaffold are larger than those of the middle-layer scaffold, the width and the height of the middle-layer scaffold are larger than those of the top-layer scaffold, and the near wall surfaces of the scaffolds are aligned; the far wall surfaces of two adjacent scaffolds are fixedly connected through diagonal braces. The method has the effect of improving the stability of the scaffold without the tension joint.

Description

Scaffold supporting system without tension joint and supporting method

Technical Field

The application relates to the field of scaffolds, in particular to a scaffold supporting system without a pull-out joint and a supporting method.

Background

When the ancient architecture is repaired, maintaining the original appearance of the ancient architecture is a construction aim.

If need repair the outer wall of ancient building, need to build up of scaffold frame, in order to avoid causing the destruction to the wall of ancient building, then can not carry out the drawknot of scaffold frame and building through the form of linking the wall spare, only through the dead weight in order to realize the stability of scaffold frame.

However, once the wall surface of the ancient building is too high, for example, more than 20 meters, the number of layers of the scaffold is correspondingly increased, and the whole scaffold is very easy to be unstable.

Disclosure of Invention

In order to improve stability of a scaffold without a tension node, the application provides a scaffold support system without the tension node and a construction method.

The application provides a scaffold support system of no tie point adopts following technical scheme:

the scaffold support system without the tension node comprises a backing plate and a plurality of layers of scaffolds which are sequentially arranged from bottom to top, wherein the height-width ratio of the scaffolds is less than 2.0; each scaffold is a first-layer scaffold, a middle-layer scaffold and a top-layer scaffold from bottom to top, wherein the width and the height of the first-layer scaffold are larger than those of the middle-layer scaffold, the width and the height of the middle-layer scaffold are larger than those of the top-layer scaffold, and the near wall surfaces of the scaffolds are aligned; the far wall surfaces of two adjacent scaffolds are fixedly connected through diagonal braces.

Through adopting above-mentioned technical scheme, through setting up the height and the width of first layer scaffold frame, middle level scaffold frame and top layer scaffold frame to realize that whole support the system from bottom to top contracts gradually, so, the width of first layer scaffold frame is biggest, and stability as the chassis is extremely strong, and secondly, wholly prop up the focus of establishing the system and hang down, under the high-rise requirement of establishing the system, can improve the steadiness of top layer scaffold frame greatly.

And moreover, by arranging the diagonal braces, the support is carried out at the far wall surface, so that the occurrence of stress inclination caused by gravity center offset is reduced, and the stability of the whole supporting system is further improved.

Optionally, the scaffold also comprises a ventilation protection assembly, wherein the ventilation protection assembly is arranged on the outer circumferential surface of the scaffold, and the ventilation protection assemblies of two adjacent layers are staggered in the horizontal direction.

Through adopting above-mentioned technical scheme, ventilation protection subassembly can play ventilation and the effect of protection, firstly, can dredge outside wind to reduce because of wind load is too big and lead to the unstability of high-rise support system, secondly, can play the effect of protection construction.

Although the ventilation protection assembly has a certain effect of dispelling wind, the height and the surface area of the supporting system are overlarge, so that the influence of wind load is huge, and the ventilation protection assembly is provided with a fault opening by arranging the ventilation protection assemblies of two adjacent layers in a staggered manner in the horizontal direction, so that the external wind is partly dredged into the fault opening, and the condition that the wind load is overlarge due to the fact that the external wind is intensively applied to the ventilation protection assembly is reduced.

Optionally, the ventilation protection subassembly includes installing frame, fixed ring rail and wind-driven structure, wherein the installing frame install in on the lateral surface of scaffold frame, the external diameter of fixed ring rail is tangent and fixed the setting with the inside wall of installing frame, wind-driven structure is located fixed ring rail's cavity department, wind-driven structure includes first rotation circle and a plurality of first lamina, first rotation circle with fixed ring rail rotates around fixed ring rail's axle center to be connected, each first lamina is arranged around fixed ring rail's axle center circumference interval, first lamina's one end with first rotation circle is connected, is formed with ventilation clearance between two adjacent first lamina.

Through adopting above-mentioned technical scheme, under windless load's condition, fixed ring rail, first rotation circle and first lamina can be regarded as braced frame to strengthen the intensity of installing frame, thereby improve scaffold's bearing capacity and steadiness.

Under the condition of wind load, one part of external wind flows through the ventilation gap, and the other part acts on the first blade plate to drive the first blade plate to rotate, so that it can be understood that part of wind pressure is converted into kinetic energy for the rotation of the first blade plate, and the part of wind pressure is reduced to be the wind load directly applied to the supporting system, namely the influence of the wind load is greatly reduced, so that the stability of the supporting system is greatly improved.

Optionally, a plurality of tooth grooves are all seted up on the both long sides of first lamina, and each tooth groove is arranged along first lamina length direction equidistant setting.

Through adopting above-mentioned technical scheme, when the surface of external wind flow through first lamina, the tooth's socket can cut this external wind to reduce the amount of wind and too big and lead to the turbulent flow, thereby reduce the influence of wind load.

Optionally, the inner end surface of the fixed ring rail is fixed with a plurality of reinforcing rods, one ends of the reinforcing rods, which are far away from the fixed ring rail, are fixedly connected with a rotating shaft together, and the rotating shaft and the first rotating ring are coaxially arranged; one end of each first vane plate is fixedly connected with a first rotating ring, and the first rotating rings are rotationally connected with the rotating shaft.

Through adopting above-mentioned technical scheme, through setting up the axis of rotation for the rotation smoothness degree of first lamina is higher, and the axis of rotation plays the effect that bears first lamina weight, with the rotation smoothness degree of further improvement first lamina.

And through setting up the stiffening rod, can strengthen the intensity of fixed ring rail to improve because of the bearing capacity of installing the frame, thereby improve the bearing capacity of scaffold frame.

Optionally, the wind driving structure further includes a second rotating ring and a plurality of second blade plates, the second rotating ring is located at one side of the axial direction of the first rotating ring, the second rotating ring is rotationally connected with the fixed ring rail around the axle center of the fixed ring rail, the second blade plates and the first blade plates are obliquely arranged relative to the cross section of the fixed ring rail, and the oblique direction of the second blade plates is opposite to the oblique direction of the first blade plates; each second vane plate is circumferentially arranged around the axis of the fixed ring rail at intervals, and one end of each second vane plate is connected with the second rotating ring; a long side edge of the second vane plate extends to the hollow part of the first rotating ring, and a long side edge of the first vane plate extends to the hollow part of the second rotating ring; the edge of the first rotating ring is provided with a first balancing weight, and the edge of the second rotating ring is provided with a second balancing weight; when the first balancing weight and the second balancing weight are all moved to the lowest point under the gravity, the axial projections of the first blade plate and the second blade plate on the fixed ring rail are staggered.

By adopting the technical scheme, the first blade plate and the second blade plate which are staggered can be combined to play a role in reducing the clearance in the axial projection direction, so that the construction safety is greatly improved; secondly, axial dislocation exists between the two, so that external wind can also pass through the dislocation opening to play a role in dredging, namely, the arrangement greatly takes into consideration the functions of protection and ventilation.

And, through setting up the incline direction of first lamina and second lamina, the interference nature of first lamina and second lamina, when there is external wind, this external wind will force first lamina and second lamina to rotate, and because the incline direction is opposite, therefore first lamina and second lamina will the syntropy rotate and interfere together, at this moment, along the axial of fixed ring rail, the majority of first lamina and second lamina overlaps for ventilation clearance grow, the effect of dredging of external wind improves greatly.

And the subsequent rotation direction of the first blade plate and the second blade plate is mainly the rotation direction of the blade plate of the straight external wind, for example, the external wind is directly blown onto the first blade plate, the first blade plate and the second blade plate rotate in opposite directions, at this time, the second blade plate is hidden on the back surface of the first blade plate, and only the first blade plate is under wind pressure, so that the second blade plate is driven to rotate by the first blade plate, and at this time, the wind power is still converted into the rotational kinetic energy of the blade plate.

That is, the arrangement of the double-layer vane plates can ensure that the ventilation gap is reduced by staggering under the condition of no wind pressure so as to improve the construction safety, and under the condition of wind pressure, the first vane plates and the second vane plates are overlapped, the ventilation gap is increased so as to play a role in guiding external wind, and thus, the adaptability change can be made under two working conditions so as to respectively improve the construction safety and the external wind guiding effect.

Under the condition of no wind pressure, the first balancing weight and the second balancing weight respectively enable the gravity centers of the first rotating ring and the second rotating ring to deviate, so that the first rotating ring and the second rotating ring rotate to a gravity center stable state, namely, the first balancing weight and the second balancing weight are all moved to the lowest point by gravity, and accordingly, the positions of the first rotating ring and the second rotating ring are corrected, and under the condition of no wind, the first blade plate and the second blade plate can be staggered, so that construction safety is guaranteed.

Optionally, the surface of first lamina with the cross section parallel arrangement of fixed ring rail, the radial rotation of inner wall of first rotation circle is provided with first dead lever, a long side of first lamina with first dead lever fixed connection, first dead lever is equipped with first torsional spring, and first torsional spring is used for maintaining the parallel state of the relative fixed ring rail of first lamina.

By adopting the technical scheme, under windless condition, the first vane plates are in a parallel state, so that the ventilation gap is greatly reduced, and the effect of improving the construction safety is achieved. Under the windy condition, wind pressure is applied to the first blade plate so as to drive the free end of the first blade plate to rotate, during the period, the elasticity of the first torsion spring is utilized to resist a part of wind pressure, and secondly, the first blade plate rotates to an inclined state, so that the wind pressure drives the first blade plate and the first rotating ring to rotate, and wind power is converted into the rotating kinetic energy of the blade plate.

According to the magnitude of wind pressure, the inclination angle of the first blade plate is in a variable state, when the wind pressure is large, the inclination angle of the first blade plate is large, and at the moment, the ventilation gap is maximum, so that external wind can be dredged conveniently, and the rotation speed of the first blade plate is reduced; when the wind pressure is smaller, the inclination angle of the first blade plate is smaller, and the compression of the first blade plate is larger, so that the rotation speed of the first blade plate is faster, and the conversion efficiency of wind power is improved.

Both of the above conditions are used in their respective ways to reduce the effects of wind loads.

Optionally, the wind driving structure further includes a second rotating ring and a plurality of second blade plates, the second rotating ring is located at one axial side of the first rotating ring, the second rotating ring is rotationally connected with the fixed ring rail around the axis of the fixed ring rail, each second blade plate is circumferentially arranged around the axis of the fixed ring rail at intervals, and one end of each second blade plate is connected with the second rotating ring; the inner wall radial rotation of second rotation circle is connected with the second dead lever, and second dead lever and first dead lever are located the close edge of second rotation circle and first rotation circle respectively, a long side of second lamina with second dead lever fixed connection, the surface of second lamina with the surface parallel arrangement of first lamina, the second dead lever is equipped with the second torsional spring, and the second torsional spring is used for maintaining the parallel state of second lamina, just the free side of first lamina and the free side of second lamina separate the setting.

Through adopting above-mentioned technical scheme, when windless, first lamina and second lamina reduce ventilation clearance jointly to increase the construction security.

When there is wind, if the wind passes through the first blade plate, the first blade plate and the second blade plate are forced to incline, then the first blade plate and the second blade plate rotate oppositely, the second blade plate is hidden at the back of the first blade plate, and it can be understood that only the first blade plate receives wind pressure, and the second blade plate is abutted against the second fixing rod, so that the first blade plate drives the second blade plate to rotate together through the second fixing rod.

Optionally, the second rotation circle threaded connection has to support tight pole, it is equipped with the gear to support tight pole, first rotation circle coaxial be equipped with be used for with gear complex ring gear, work as first rotation circle and second rotation circle rotate in opposite directions to first dead lever and second dead lever along axial projection partially overlap, support tight pole rotation and support the tip of tight pole and support press in on the inner wall of solid fixed ring rail.

When extremely high wind pressure is applied, each part of the scaffold vibrates, partial looseness is easy to occur, by adopting the technical scheme, when extremely high wind pressure is applied, the first blade plate and the second blade plate rotate oppositely, namely the first rotating ring and the second rotating ring rotate oppositely, so that the supporting rod is rotated through the cooperation of the gear and the gear ring, when the axial projection parts of the first fixing rod and the second fixing rod are overlapped, the supporting rod applies radial and outward supporting force to the fixed ring rail, the supporting force enables the first blade plate and the second blade plate to stop rotating, rotation resonance is reduced, the supporting force also outwards supports the fixed ring rail, so that the mounting frame has internal stress, and vibration of wind pressure is resisted, and stability of a supporting system under the working condition is improved.

The method for setting up the scaffold supporting system without the tension node adopts the following technical scheme:

the method for setting up the scaffold support system without the tension joint comprises the following steps:

s1, filling soil outside an enclosure, and paving a base plate (14);

s2, sequentially erecting a first-layer scaffold (11), a middle-layer scaffold (12) and a top-layer scaffold (13);

s3, fully paving a horizontal safety net (16) at the staggered part of the top surface of the scaffold;

s4, installing a ventilation protection assembly (2) on the outer side of the scaffold;

s5, installing diagonal braces (17).

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

1. the heights and widths of the first-layer scaffold, the middle-layer scaffold and the top-layer scaffold are set so as to gradually shrink the whole supporting system from bottom to top, so that the gravity center of the whole supporting system is lower, and the stability of the top-layer scaffold can be greatly improved under the high-layer requirement of the supporting system;

2. the wind driving structure is arranged to convert part of wind pressure into kinetic energy of rotation of the first blade plate, so that the part of wind pressure is reduced to wind load directly applied to the supporting system, namely, the influence of the wind load is greatly reduced, and the stability of the supporting system is greatly improved;

3. the first blade plate and the second blade plate which are arranged in a staggered manner can ensure that the ventilation gap is reduced by staggering under the condition of no wind pressure so as to improve the construction safety, and the ventilation gap is increased under the condition of wind pressure so as to play a role in dispelling external wind, so that the adaptability change can be made under two working conditions so as to respectively improve the construction safety and the external wind dispelling effect;

4. by arranging the first blade plate with the inclination angle changeable, the ventilation gap can be greatly reduced under the condition of no wind, so as to play a role in improving the construction safety, and under the condition of wind, wind pressure is applied to the first blade plate so as to drive the free end of the first blade plate to rotate and incline, so that the wind pressure drives the first blade plate and the first rotating ring to rotate, and the wind power is converted into the rotating kinetic energy of the blade plate;

5. the first rotating ring and the second rotating ring are rotated in opposite directions to rotate the abutting rod, the abutting rod applies radial and outward abutting force to the fixed ring rail, and the abutting force outwards expands the fixed ring rail so that the mounting frame has internal stress, thereby resisting the vibration of wind pressure and improving the stability of the supporting system under the working condition;

drawings

FIG. 1 is a schematic diagram of the overall support system of example 1.

Fig. 2 is a schematic view of the ventilation protection assembly of embodiment 1.

Fig. 3 is a schematic view of the ventilation protection assembly of embodiment 2.

Fig. 4 is a schematic view of a wind driven structure of embodiment 2.

Fig. 5 is a schematic view of a wind driven structure of embodiment 3.

Fig. 6 is a partial enlarged view at a in fig. 5.

Fig. 7 is a state diagram for embodying the positional relationship of the first blade plate and the second blade plate with respect to each other in embodiment 3.

Fig. 8 is a schematic view of a wind driven structure of embodiment 4.

Fig. 9 is a state diagram of embodiment 4 for showing the first blade plate in the case of being subjected to wind.

Fig. 10 is a schematic view of a wind driven structure of embodiment 5.

Fig. 11 is a partial enlarged view at B in fig. 10.

Fig. 12 is a state diagram of embodiment 5 for showing the positional relationship of the first blade plate and the second blade plate with each other in the case of wind.

Fig. 13 is a partial cross-sectional view of embodiment 6 for embodying the mating relationship of the abutment lever and the fixed ring rail.

Reference numerals illustrate: 2. a ventilation protection assembly; 3. a wind driven structure; 11. a first layer scaffold; 12. middle layer scaffold; 13. a top scaffold; 14. a backing plate; 16. a horizontal safety net; 17. diagonal bracing; 21. a steel plate; 22. a vent hole; 23. a mounting frame; 24. fixing the ring rail; 241. a ring groove; 31. a first vane plate; 311. tooth slots; 32. a first rotating ring; 33. a reinforcing rod; 34. a rotating shaft; 35. a first rotating ring; 36. a second rotating ring; 37. a first balancing weight; 38. a first fixing rod; 39. a first torsion spring; 41. a second vane plate; 42. a second rotating ring; 43. a second balancing weight; 44. a second fixing rod; 45. a second torsion spring; 51. a tightening rod; 52. a thread sleeve; 53. a gear; 54. and a gear ring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-13.

The embodiment 1 of the application discloses a scaffold support system without a tension node.

Referring to fig. 1, the scaffolding system without tie points includes a plurality of layers of scaffolding including a pad 14 and a plurality of layers of scaffolding arranged in sequence from bottom to top.

Wherein the pad 14 is made of wood, the pad 14 is horizontally laid on the outdoor ground in advance, the scaffold in the embodiment is three layers, namely a first layer scaffold 11, a middle layer scaffold 12 and a top layer scaffold 13 from bottom to top,

the height-to-width ratio of the scaffold is smaller than 2.0, wherein the width and the height of the first scaffold 11 are larger than those of the middle scaffold 12, the width and the height of the middle scaffold 12 are larger than those of the top scaffold 13, one surface of the scaffold, which is close to the outer wall surface of the ancient building, is a near wall surface, and the near wall surfaces of the scaffolds are vertically aligned to each other, so that the far wall surfaces of the scaffolds are staggered.

The whole support system is gradually contracted from bottom to top, wherein the width of the first scaffold 11 is the largest, the stability of the first scaffold as a chassis is extremely strong, and secondly, the gravity center of the whole support system is lower, so that the stability of the top scaffold 13 can be greatly improved under the high-rise requirement of the support system.

And, the far wall surface of two adjacent layers of scaffolds is fixedly connected through the inclined strut 17 so as to support at the far wall surface, so that the occurrence of stress inclination caused by gravity center offset is reduced, and the stability of the whole supporting system is further improved.

In order to meet the safety construction requirement, a horizontal safety net 16 is horizontally paved on the top surface of the scaffold, and a ventilation protection assembly 2 can be further arranged on the peripheral surface of the scaffold.

As shown in fig. 2, the ventilation protection assembly 2 of the present application is a steel plate 21, the steel plate 21 is mounted on the outer circumferential surface of the scaffold, so as to play a role in improving construction safety, and in order to reduce wind load of the whole supporting system due to wind resistance of the steel plate 21, the steel plate 21 is provided with densely arranged ventilation holes 22.

Because the far wall surfaces of the scaffolds of each layer are staggered, the steel plates 21 on the far wall surfaces of the adjacent two layers of scaffolds are also staggered, so that a fault opening is formed between the upper steel plate 21 and the lower steel plate 21, and therefore, external wind is partially guided into the fault opening, so that the condition that the external wind is intensively applied to the steel plates 21 to cause overlarge wind load is reduced.

Embodiment 1 also discloses a method for setting up a scaffold support system without a tension node, comprising the following steps:

s1, filling soil outside the chamber, and paving a backing plate 14.

S2, sequentially building a first-layer scaffold 11, a middle-layer scaffold 12 and a top-layer scaffold 13, wherein specific building parameters are as follows:

setting up parameters of the first-layer scaffold 11: setting up a transverse 5 span, which is 7.2 meters wide, and setting up a height of 6 steps, which is 11.050 meters; the aspect ratio is 11.050/7.2=1.535 <2.0.

Setting up parameters of the middle scaffold 12: compared with the first-layer scaffold 11, the scaffold is retracted inwards by 1 span, and the height is set to be 4 steps, which is 7.2 meters in total; the aspect ratio is 7.2/5.7=1.263 <2.0.

Setting up parameters of the top scaffold 13: compared with the middle-layer scaffold 12, the scaffold is folded inwards by 1 span, and the height is 3 steps, which is 5.4 meters; the aspect ratio is 5.4/4.2=1.286 <2.0.

The building manner of the concrete scaffold in this embodiment takes a 4-step scaffold as an example here, and is specifically as follows:

placing sweeping rods (big cross bars close to the ground), erecting upright rods one by one, fastening with the sweeping rods, installing small sweeping cross bars and fastening with the upright rods, installing first-step big cross bars and fastening with the upright rods, installing first-step small cross bars, installing second-step big cross bars, installing second-step small cross bars, and installing third-step big cross bars, fourth-step big cross bars and small cross bars.

S3, fully paving a horizontal safety net 16 at the staggered part of the top surface of the scaffold, and binding and fixing the safety net by adopting nylon ropes.

S4, hanging the steel plate 21 on the vertical face of the scaffold in a full-closed mode.

S5, installing diagonal braces 17.

Example 2

Although the steel plate 21 of example 1 can protect and assist the scaffold due to its own elevation and strength, and uses the ventilation holes 22 to ventilate the outside wind, since the elevation of the steel plate 21 itself is still large, the influence of wind load is great when the height and surface area of the scaffold support system are too large.

The improvement of embodiment 2 over embodiment 1 is therefore distinguished in that the ventilation protection assembly 2 comprises a mounting frame 23, a fixed ring rail 24 and a wind driven structure 3, as shown in fig. 3, wherein the mounting frame 23 is square, and the mounting frame 23 is attached to the facade of the scaffold by means of clips. The outer diameter of the fixed ring rail 24 is tangent to the inner side wall of the mounting frame 23 and is fixedly arranged, the fixed ring rail 24 can be arranged in a plurality of ways to fill the hollow of the mounting frame 23 as much as possible, and in this embodiment, the fixed ring rail 24 is arranged in two ways. The wind driven structure 3 is located in the hollow of the stationary annular rail 24.

As shown in fig. 4, the wind driving structure 3 includes a first rotating ring 32 and a plurality of first vane plates 31, wherein an outer diameter of the first rotating ring 32 is fitted to an inner diameter of the fixed annular rail 24, so that the first rotating ring 32 and the fixed annular rail 24 are rotatably connected around an axis of the fixed annular rail 24; the end face of the fixed ring rail 24 far away from the outer facade of the scaffold is fixed with a plurality of reinforcing rods 33, the other end of each reinforcing rod 33 is jointly fixed with a rotating shaft 34, the rotating shaft 34 and the first rotating ring 32 are coaxially arranged, and a first rotating ring 35 is rotatably sleeved on the rotating shaft 34.

Each first vane plate 31 is circumferentially arranged around the axis of the fixed ring rail 24 at intervals, and a ventilation gap is formed between two adjacent first vane plates 31; the two ends of the first vane plate 31 are fixedly connected with the inner diameter of the first rotating ring 32 and the outer diameter of the first rotating ring 35 respectively, and the first vane plate 31 is obliquely arranged relative to the cross section of the fixed ring rail 24; a plurality of tooth grooves 311 are formed in two long sides of the first blade plate 31, and the tooth grooves 311 are arranged at equal intervals along the length direction of the first blade plate 31.

The implementation principle of the embodiment 2 is as follows: in the case of no wind load, the fixed ring rail 24, the first rotating ring 32 and the first vane plate 31 may serve as a supporting skeleton to strengthen the strength of the mounting frame 23, thereby improving the load-bearing capacity and stability of the scaffold.

Under the condition of wind load, a part of external wind flows through the ventilation gap to be dredged, and the other part acts on the first blade plate 31 to drive the first blade plate 31 to rotate, which can be understood that part of wind pressure is converted into kinetic energy of the rotation of the first blade plate 31 to reduce the part of wind pressure into wind load directly applied to the supporting system, namely, the influence of the wind load is greatly reduced, so that the stability of the supporting system is greatly improved.

Example 3

As is clear from example 2, the greater the number of first vane plates 31, the smaller the ventilation gap, and the higher the safety of construction, but the larger the total wind-resistant area of the first vane plates 31, the greater the wind load influence, i.e., the safety of construction and the wind load influence are difficult to be compatible.

Thus, the difference between the improvement of embodiment 3 and embodiment 2 is that, as shown in fig. 5 and 6, the wind driving structure 3 further includes a second rotating ring 42 and a plurality of second vane plates 41, the second rotating ring 42 is located at one axial side of the first rotating ring 32, the outer diameter of the second rotating ring 42 is fitted to the inner diameter of the fixed ring rail 24, so that the second rotating ring 42 is rotatably connected with the fixed ring rail 24 around the axis of the fixed ring rail 24, and the second rotating ring 36 is rotatably sleeved on the rotating shaft 34.

Each second vane plate 41 is arranged around the axis circumference of the fixed ring rail 24 at intervals, two ends of the second vane plates 41 are fixedly connected with the inner diameter of the second rotating ring 42 and the outer diameter of the second rotating ring 36 respectively, the second vane plates 41 are obliquely arranged relative to the cross section of the fixed ring rail 24, the oblique direction of the second vane plates 41 is opposite to the oblique direction of the first vane plates 31, and the axial projections of the first vane plates 31 and the second vane plates 41 on the fixed ring rail 24 are staggered.

A long side of the second vane plate 41 extends to the hollow of the first rotating ring 32, and a long side of the first vane plate 31 extends to the hollow of the second rotating ring 42.

As shown in fig. 7, in the absence of wind load, the first vane plates 31 and the second vane plates 41 that are disposed in a staggered manner can be combined to function to reduce the clearance in the axial projection direction, that is, the ventilation clearance is extremely small, so that the construction safety is greatly improved.

In the case of small external wind, since there is axial misalignment between the first vane plate 31 and the second vane plate 41, the external wind can also pass through the misalignment opening to perform a dredging function, i.e., the arrangement greatly combines the functions of protection and ventilation.

When the external wind is large, for example, the external wind is blown onto the first vane plate 31 and the second vane plate 41 in turn, because the inclined directions are opposite, the first vane plate 31 and the second vane plate 41 will rotate in the same direction and interfere with each other (see fig. 7), and most of the first vane plate 31 and the second vane plate overlap along the axial direction of the fixed ring rail 24, that is, the second vane plate 41 is hidden at the back of the first vane plate 31, so that the ventilation gap is increased, and the ventilation effect of the external wind is greatly improved.

And since the second blade plate 41 is hidden at the back of the first blade plate 31, it can be understood that only the first blade plate 31 receives wind pressure, and therefore the second blade plate 41 will be rotated by the first blade plate 31, and at this time, the wind power is still converted into rotational kinetic energy of the blade plate.

In conclusion, the arrangement of the double-layer blade plate can make adaptability change under two working conditions so as to respectively consider construction safety and the dredging effect of external wind.

Further, in order to ensure that the first vane plate 31 and the second vane plate 41 can be still staggered after the first rotating ring 32 and the second rotating ring 42 are rotated, as shown in fig. 5, a first balancing weight 37 is mounted at the edge of the first rotating ring 32, and a second balancing weight 43 is mounted at the edge of the second rotating ring 42.

Under the condition of no wind pressure, the first balancing weights 37 and the second balancing weights 43 respectively enable the centers of gravity of the first rotating ring 32 and the second rotating ring 42 to deviate, so that the first rotating ring 32 and the second rotating ring 42 rotate to a state with stable centers of gravity, namely, the first balancing weights 37 and the second balancing weights 43 are all moved to the lowest point by gravity, and therefore the positions of the first rotating ring 32 and the second rotating ring 42 are corrected, the first vane plate 31 and the second vane plate 41 are in a staggered state, and ventilation gaps are reduced, so that construction safety is ensured.

Example 4

Embodiment 4 is different from embodiment 2 in that, as shown in fig. 8, the inner wall of the first rotating ring 32 is radially provided with a first fixing rod 38, the first fixing rod 38 is rotatably connected with the first rotating ring 32 around itself in axial direction, and one long side of the first vane plate 31 is fixedly connected with the first fixing rod 38, i.e., the first vane plate 31 can be rotated around the first fixing rod 38 to change its inclination angle.

A second torsion spring 45 is provided between the second fixing lever 44 and the second rotating ring 36, and the second torsion spring 45 is used for maintaining the parallel state of the second vane plate 41 with respect to the fixing ring rail 24.

As shown in fig. 9, in the windless condition, the first vane plates 31 are in a parallel state, and the ventilation gap is small at this time, so as to play a role in improving the construction safety.

In case of wind, wind pressure is applied to the first vane plate 31 to drive the free side of the first vane plate 31 to rotate (the long side of the first vane plate 31 far from the first fixing rod 38 is the free side), during which part of the wind pressure is resisted by the elastic force of the first torsion spring 39, and then the first vane plate 31 rotates to an inclined state, so that the wind pressure drives the first vane plate 31 and the first rotating ring 32 to rotate, and the wind force is converted into the rotational kinetic energy of the vane plate to play a role of reducing the influence of wind load; and the first vane plate 31 is inclined, and the ventilation gap becomes large, which is advantageous for the evacuation of external wind.

In conclusion, the arrangement can make adaptability change under two working conditions so as to respectively consider construction safety and the dredging effect of external wind.

Example 5

As shown in fig. 10 and 11, the arrangement of the first vane plate 31 in this embodiment is the same as that of embodiment 4, the second vane plate 41 of this embodiment is provided with a second fixing rod 44 radially provided on the inner wall of the second rotating ring 42, the second fixing rod 44 is axially and rotatably connected with the second rotating ring 42 around itself, one long side of the second vane plate 41 is fixedly connected with the second fixing rod 44, that is, the second vane plate 41 can be rotated around the second fixing rod 44 to change its inclination angle, and the second fixing rod 44 and the first fixing rod 38 are located at the close edges of the second rotating ring 42 and the first rotating ring 32, respectively.

A second torsion spring 45 is disposed between the second fixing rod 44 and the second rotating ring 36, the second torsion spring 45 is used for maintaining the parallel state of the second vane plate 41 relative to the fixed ring rail 24, and the adjacent free sides of the first vane plate 31 and the second vane plate 41 are disposed apart.

As shown in fig. 12, in the windless state, the first vane plates 31 and the second vane plates 41 that are provided in a staggered manner can be combined to function to reduce the gap in the axial projection direction, so as to greatly improve the construction safety.

When wind is present, if the wind passes through the first vane plate 31, the first vane plate 31 and the second vane plate 41 are forced to incline, then the first vane plate 31 and the second vane plate 41 rotate oppositely, the second vane plate 41 is hidden at the back of the first vane plate 31, which can be understood that only the first vane plate 31 receives wind pressure, and the second vane plate 41 is abutted against the second fixing rod 44, so that the first vane plate 31 drives the second vane plate 41 to rotate along the same direction through the second fixing rod 44, and the wind power is converted into the rotational kinetic energy of the vane plates, so as to play a role in reducing the influence of wind load; and the first vane plate 31 and the second vane plate 41 are both inclined, and the ventilation gap is extremely large, which is advantageous for the evacuation of external wind.

Example 6

At extreme wind pressures, the components of the scaffold will vibrate, which may easily result in partial loosening, especially if the first vane plate 31 and the second vane plate 41 are both rotating at high speed, and resonance may be more severe.

Therefore, embodiment 6 is configured such that, on the basis of embodiment 5, as shown in fig. 13, the inner diameter of the fixed ring rail 24 is provided with a ring groove 241 provided around itself, the second rotating ring 42 is fixed with a threaded sleeve 52, the threaded sleeve 52 is internally threaded with a tightening rod 51, the tightening rod 51 is provided in the radial direction of the second rotating ring 42, and one end of the tightening rod 51 is located in the ring groove 241.

A gear 53 is fixed on the abutting rod 51, a gear ring 54 is coaxially fixed on the end surface of the first rotating ring 32, the thickness of the gear 53 is larger than that of the gear ring 54, and the gear 53 is matched with the gear ring 54.

At the time of extremely high wind pressure, the first vane plate 31 and the second vane plate 41 rotate in the opposite direction, that is, the first rotating ring 32 and the second rotating ring 42 rotate in the opposite direction, so that the abutting rod 51 is rotated by the cooperation of the gear 53 and the gear ring 54, when the axially projected portions of the first fixing rod 38 and the second fixing rod 44 overlap, the end of the abutting rod 51 just moves to the groove bottom of the annular groove 241 of the fixed ring rail 24, that is, the abutting rod 51 just applies a radial and outward abutting force to the fixed ring rail 24, the abutting force stops the rotation of the first vane plate 31 and the second vane plate 41, the rotation resonance is reduced, and at the same time, the abutting force also outwards expands the fixed ring rail 24, so that the mounting frame 23 has internal stress, thereby resisting the vibration of wind pressure, and improving the stability of the supporting system under the working condition.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (7)

1. The utility model provides a scaffold frame of no tie point prop up and establishes system which characterized in that: the scaffold comprises a backing plate (14), a multi-layer scaffold and a ventilation protection assembly (2) which are sequentially arranged from bottom to top, wherein the height-to-width ratio of the scaffold is less than 2.0; each scaffold is a first-layer scaffold (11), a middle-layer scaffold (12) and a top-layer scaffold (13) from bottom to top, wherein the width and the height of the first-layer scaffold (11) are larger than those of the middle-layer scaffold (12), the width and the height of the middle-layer scaffold (12) are larger than those of the top-layer scaffold (13), and the near-wall ends of the scaffolds are aligned; the far wall ends of two adjacent scaffolds are fixedly connected through inclined struts (17); the ventilation protection assemblies (2) are arranged on the outer peripheral surface of the scaffold, and the ventilation protection assemblies (2) of two adjacent layers are staggered in the horizontal direction; the ventilation protection assembly (2) comprises a mounting frame (23), a fixed ring rail (24) and a wind driving structure (3), wherein the mounting frame (23) is mounted on the outer side face of the scaffold, the outer diameter of the fixed ring rail (24) is tangential to the inner side wall of the mounting frame (23) and is fixedly arranged, the wind driving structure (3) is positioned in the hollow part of the fixed ring rail (24), the wind driving structure (3) comprises a first rotating ring (32) and a plurality of first blade plates (31), the first rotating ring (32) and the fixed ring rail (24) are rotationally connected around the axis of the fixed ring rail (24), each first blade plate (31) is distributed around the circumference of the axis of the fixed ring rail (24) at intervals, one end of each first blade plate (31) is connected with the first rotating ring (32), and a ventilation gap is formed between two adjacent first blade plates (31); the wind driving structure (3) further comprises a second rotating ring (42) and a plurality of second blade plates (41), the second rotating ring (42) is positioned on one side of the axial direction of the first rotating ring (32), the second rotating ring (42) is rotationally connected with the fixed ring rail (24) around the axis of the fixed ring rail (24), the second blade plates (41) and the first blade plates (31) are obliquely arranged relative to the cross section of the fixed ring rail (24), and the oblique direction of the second blade plates (41) is opposite to the oblique direction of the first blade plates (31); each second vane plate (41) is circumferentially arranged around the axis of the fixed ring rail (24) at intervals, and one end of each second vane plate (41) is connected with the second rotating ring (42); a long side of the second vane plate (41) extends to the hollow part of the first rotating ring (32), and a long side of the first vane plate (31) extends to the hollow part of the second rotating ring (42); a first balancing weight (37) is arranged at the edge of the first rotating ring (32), and a second balancing weight (43) is arranged at the edge of the second rotating ring (42); when the first balancing weight (37) and the second balancing weight (43) are all moved to the lowest point under the gravity, the first vane plate (31) and the second vane plate (41) are in a staggered state.

2. The tension node-free scaffolding system as claimed in claim 1 wherein: a plurality of tooth grooves (311) are formed in two long side edges of the first blade plate (31), and the tooth grooves (311) are distributed at equal intervals along the length direction of the first blade plate (31).

3. The tension node-free scaffolding system as claimed in claim 1 wherein: a plurality of reinforcing rods (33) are fixed on the inner end surface of the fixed ring rail (24), a rotating shaft (34) is fixedly connected to one end, far away from the fixed ring rail (24), of each reinforcing rod (33), and the rotating shaft (34) and the first rotating ring (32) are coaxially arranged; one end of each first vane plate (31) is fixedly connected with a first rotating ring (35), and the first rotating rings (35) are rotationally connected with the rotating shaft (34).

4. The tension node-free scaffolding system as claimed in claim 1 wherein: the surface of the first vane plate (31) can be parallel to the cross section of the fixed ring rail (24), a first fixing rod (38) is radially arranged on the inner wall of the first rotating ring (32) in a rotating mode, one long side edge of the first vane plate (31) is fixedly connected with the first fixing rod (38), the first fixing rod (38) is provided with a first torsion spring (39), and the first torsion spring (39) is used for maintaining the parallel state of the first vane plate (31) relative to the fixed ring rail (24).

5. The tension node free scaffolding system as claimed in claim 4 wherein: the wind driving structure (3) further comprises a second rotating ring (42) and a plurality of second blade plates (41), the second rotating ring (42) is positioned on one side of the axial direction of the first rotating ring (32), the second rotating ring (42) is rotationally connected with the fixed ring rail (24) around the axis of the fixed ring rail (24), the second blade plates (41) are circumferentially distributed at intervals around the axis of the fixed ring rail (24), and one end of each second blade plate (41) is connected with the second rotating ring (42); the inner wall radial rotation of second rotation circle (42) is connected with second dead lever (44), and second dead lever (44) and first dead lever (38) are located the close edge of second rotation circle (42) and first rotation circle (32) respectively, a long side of second lamina (41) with second dead lever (44) fixed connection, the surface of second lamina (41) with the surface parallel arrangement of first lamina (31), second dead lever (44) are equipped with second torsional spring (45), and second torsional spring (45) are used for maintaining the parallel state of second lamina (41), just the free side of first lamina (31) and the free side of second lamina (41) set up mutually apart.

6. The tension node free scaffolding system as claimed in claim 5 wherein: the second rotating ring (42) is in threaded connection with a tight supporting rod (51), the tight supporting rod (51) is provided with a gear (53), the first rotating ring (32) is coaxially provided with a gear ring (54) matched with the gear (53), and when the first rotating ring (32) and the second rotating ring (42) rotate to the position that the axial projection parts of the first fixing rod (38) and the second fixing rod (44) are overlapped, the tight supporting rod (51) rotates and the end part of the tight supporting rod (51) is pressed against the inner wall of the fixed ring rail (24).

7. A method of setting up a scaffolding system without tie points according to claim 1, characterized in that: the method comprises the following steps:

s1, filling soil outside an enclosure, and paving a base plate (14);

s2, sequentially erecting a first-layer scaffold (11), a middle-layer scaffold (12) and a top-layer scaffold (13);

s3, fully paving a horizontal safety net (16) at the staggered part of the top surface of the scaffold;

s4, installing a ventilation protection assembly (2) on the outer side of the scaffold;

s5, installing diagonal braces (17).