CN114016888B

CN114016888B - Stackable turnover louver grid

Info

Publication number: CN114016888B
Application number: CN202111668959.9A
Authority: CN
Inventors: 区应绍
Original assignee: Foshan Magnetist Youdao Technology Co ltd
Current assignee: Foshan Magnetist Youdao Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-08
Anticipated expiration: 2041-12-31
Also published as: WO2023125037A1; CN114016888A

Abstract

The invention provides a stackable turnover louver grid, which belongs to the field of sun-shading equipment and comprises a slide rail and blades rotatably arranged on the slide rail, wherein the rotating axes of the blades deviate from the horizontal central axis of the blades, the blades are connected to a power assembly in a transmission way and are arranged on the slide rail in a sliding way driven by the power assembly, the slide rail is provided with a supporting structure for supporting the blades to enable the blades to be turned and closed at the positions corresponding to the turning and closing positions of the blades, the blades can naturally droop, turn and open, meanwhile, the blades can be stacked and pulled by a motor by matching with the supporting structure and various transmission structures, and the blades can be continuously pulled to enable the blades to be turned and closed under the supporting of the supporting structure when the blades are completely pulled, so that the motor can control the turning and the stacking of the blades, the manufacturing cost is reduced, and various problems caused by the incoordination among a plurality of motors are avoided, the louver grid provided by the invention has the advantages of reasonable structure, low manufacturing cost and low damage probability.

Description

Stackable turnover louver grid

Technical Field

The invention belongs to the field of sun shading equipment, and particularly relates to a stackable turnover louver grille.

Background

The sunlight house is also called as a glass house, and is a totally-transparent and unconventional building which is usually built by glass and a metal frame so as to achieve the purposes of enjoying sunlight and being close to nature. Because of the sunshine room is a confined space, under sunshine shines for a long time, the temperature in the sunshine room can constantly rise, leads to people can't stay in the sunshine room for a long time, just at this moment need carry out the sunshade to reduce the indoor temperature that the sunshine room shines at the sun, adopt the louvered grille to carry out the sunshade at present more. In addition, skylights, patios, roof racks and the like of some buildings are applied to louver gratings for shading and retaining water.

However, most of the existing louver gratings are fixed blades, or the blades can only be turned over for ventilation, and all the blades cannot be stacked to one side to form better viewing effect and ventilation effect. Part can realize the blade simultaneously and the shutter grid that piles up then needs two at least motors to control, and its cost of manufacture is high and difficult to control, in the use, often can cause multiple problem because of the incoordination between two motors, damages even, has influenced the use and has experienced and also restrict shutter grid's development.

Disclosure of Invention

Based on the problems in the prior art, the invention provides a stackable turnover louver grid, which can realize the turnover and stacking control of blades through a motor, reduce the manufacturing cost and avoid various problems caused by the incongruity among the motors, and the invention achieves the aim through the following detailed technical scheme:

a stackable turnover louver grid comprises a slide rail and a plurality of rotating blades arranged on the slide rail, wherein the rotating axes of the blades deviate from the horizontal central axis of the blades to enable the blades to naturally droop, and a plurality of blade pulleys are arranged in the slide rail in one-to-one correspondence with the blades; the upper part of the blade is provided with a power shaft, the power shaft is connected to a blade pulley in a rotating manner, the blade is also provided with parallel shafts, the end parts of the parallel shafts of all the blades on the same side of the blade are connected to the same limiting structure in a sliding manner, the limiting structure limits each parallel shaft to be in the same height, two ends of one side, away from the blade, of the limiting structure are respectively provided with a swing rod, one end of each swing rod is connected to the limiting structure in a rotating manner, the other end of each swing rod is connected to a groove pulley in a rotating manner, the groove pulleys are installed on a sliding rail in a sliding manner, the sliding rail is provided with a supporting wheel for supporting the swing rods to enable the blade to be turned and closed at the position corresponding to the turning and closing position of the blade, the swing rods are provided with supporting points, and the supporting points are in contact with the supporting wheels in the turning process of the blade; one of the groove pulleys is positioned at the extreme end in the sliding direction of the blade, a plurality of blade pulleys are arranged behind the groove pulley, the blade pulley closest to the groove pulley is connected to a power assembly in a transmission manner to be used as a driving pulley and is installed on a sliding rail in a driving sliding manner by the power assembly, the power assembly comprises a driving motor, and the other blade pulleys are driven pulleys; one end provided with the driving pulley is taken as an initial end, the other groove pulley is close to the tail end and is rotationally connected with a swing rod with a limiting groove far away from one end of the driving pulley, the same end of all power shafts is fixedly connected with the same steel cable, and the driving pulley drives the driven pulley to slide through the steel cable.

The upper end of the blade is provided with an adhesive tape groove, and a waterproof adhesive tape is arranged in the adhesive tape groove; the lower end of the blade is provided with a waterproof hook matched with the waterproof rubber strip.

The limiting structure is a limiting groove with a U-shaped section, two ends of the limiting groove are arranged in a sealing manner, parallel wheels matched with the limiting groove are arranged at the end parts of the parallel shafts, the parallel wheels on the same side of all the blades are inserted into the same limiting groove, and the parallel wheels can slide in the limiting groove; the two ends of one side, away from the blades, of the limiting groove are respectively provided with a swing rod, one end of each swing rod is connected to the limiting groove in a rotating mode, the other end of each swing rod is connected to the groove pulley in a rotating mode, and the groove pulleys are installed on the sliding rails in a sliding mode.

Wherein, a suspender is arranged on the groove pulley, and one end of the swinging rod connected to the groove pulley is rotationally connected to the suspender; the length of the hanging rod is equal to the height difference between the power shaft and the parallel shaft when the blades are in a closed state.

The supporting wheels are provided with a plurality of supporting wheels which are rotatably arranged on the side surface of the sliding rail; the swing rod is provided with a supporting point at one end close to the limiting groove, the track passed by the supporting point in the blade turning and closing process is a supporting track, and a plurality of supporting wheels are distributed along the supporting track to enable the supporting point to be always in contact with one of the supporting wheels in the blade turning process.

One side of the limiting groove far away from the blade is provided with a plurality of bearing wheels, one side of the sliding rail close to the blade is provided with a plurality of bearing inclined rails matched with the bearing wheels, and the bearing inclined rails and the bearing wheels are arranged to avoid the deformation of the limiting groove under stress.

Wherein, a sliding area is arranged in the sliding rail, a plurality of convex rails are arranged in the sliding area, and pulleys matched with the convex rails are arranged on the leaf pulley and the groove pulley; the chain is characterized in that a transmission area is arranged on one side of the sliding area of the sliding rail, a chain rubber sleeve is fixedly installed in the transmission area, a chain groove is formed in the chain rubber sleeve, a part of a closed-loop chain is arranged in the chain groove, the closed-loop chain starts from one end of the sliding rail, extends out of the other end of the chain groove after passing through the chain groove and winds to the upper surface of the sliding rail, then returns to the starting point again after passing through the upper surface of the sliding rail to form a closed loop, and a part of the closed-loop chain is exposed outside the sliding rail to facilitate maintenance of the chain; two ends of the slide rail are provided with reversing gears meshed with the closed-loop chain, and one of the reversing gears is connected to the driving motor in a transmission manner; the leaf pulley closest to the groove pulley is fixedly connected to one section of the closed-loop chain and serves as a driving pulley, and the other leaf pulleys are driven pulleys; one of the leaf pulleys with the inverted tail end is simultaneously used as a groove pulley and is rotationally connected with a swing rod with a limiting groove far away from one end of the driving pulley; the power shaft on the pivoted be provided with the cable cover, the same cable cover of the same end of all power shafts fixedly connected with is same steel cable simultaneously, the steel cable keep away from the one end fixed connection of initiative coaster on the slide rail.

The invention has the following beneficial effects:

1. the invention optimizes and improves the structure of the blade, makes the power shaft deviate from the gravity center of the blade, thereby enabling the blade to realize natural drooping, overturning and opening, simultaneously realizes that a motor can drive the blade to be stacked by matching with a supporting structure and various transmission structures, and can realize overturning and closing of the blade under the support of the supporting structure by continuously pulling the blade when the blade is completely pulled, thereby achieving the purpose that the motor can control the overturning and stacking of the blade, reducing the manufacturing cost and avoiding various problems caused by the incoordination among a plurality of motors.

2. The arrangement of the limiting groove enables the swinging of the blades to be more uniform, and the collision of the blades caused by the inconsistent swinging among the blades is avoided to form collision noise; in addition, the supporting structure only needs to support the limiting grooves to achieve the purpose of simultaneously supporting all the blades, the supporting structure does not need to be arranged on each blade independently, and the structure of the whole louver grating can be simplified.

3. The structure that the swing rod is matched with the supporting wheel can be understood as a lever for prying up the limiting groove, the movement of the groove pulley can pry up the limiting groove by matching the swing rod with the supporting wheel, and as the supporting point leans against the limiting groove, namely the moment arm at one end of the groove pulley is longer, the pulling force of the groove pulley can be reduced according to the lever principle, so that the purpose of reducing the power of a motor can be achieved or the pryable upper limit of weight of the groove pulley can be increased; in addition, due to the pulling of the groove pulley, the swing rod can be displaced in the upwarping process, namely the supporting point can move, and the influence caused by the movement of the supporting point can be reduced by arranging a plurality of supporting wheels on the supporting track.

Drawings

Fig. 1 is a schematic perspective view of a stackable turnover louver grille.

Fig. 2 is a side view, partially cut-away, schematic structural view of a stackable turnover louver grid, with the frame material profile hidden.

Fig. 3 is a schematic front view of a stackable turnover louver grille, in which the slide rail on one side is hidden for conveniently showing the structure between the blades and the slide rail, and the front surface of the limiting groove is shown.

Fig. 4, an enlarged view at a in fig. 3.

Fig. 5, enlarged view at B in fig. 3.

Fig. 6 is a schematic perspective view of a stackable turnover louver grid, hiding the frame material section and the sliding rails.

Fig. 7, enlarged view at C in fig. 6.

Fig. 8, enlarged view at D in fig. 6.

Fig. 9, enlarged view at G in fig. 6.

Fig. 10 is a schematic structural view of a stackable turnover louver grille in the direction of the back of the limiting groove, and frame material sections and sliding rails are hidden for conveniently displaying the structure between the blades and the sliding rails.

Fig. 11, enlarged at E in fig. 10.

Fig. 12, enlarged view at F in fig. 10.

FIG. 13 is a schematic view of the blade in a flipped closed state.

Fig. 14 is a schematic structural view of a stackable and reversible louver according to the second embodiment.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

The first embodiment is as follows:

the stackable turnover louver grille as shown in the attached figures 1-13 comprises two parallel slide rails 1, two ends of the two slide rails 1 are both provided with frame material profiles to form a rectangular frame, twelve rotating blades 2 arranged between the two slide rails 1 are arranged in the rectangular frame, a sliding area is arranged in the slide rail 1, four convex rails 71 are arranged in the sliding area, two of the four convex rails 71 are arranged on the inner bottom surface of the sliding area, the other two convex rails 71 are respectively arranged on the inner walls at two sides, a groove pulley 42 and twelve leaf pulleys 3 corresponding to the blades 2 one by one are sequentially arranged in the sliding area, in practice, the leaf pulleys 3 and the groove pulleys 42 can be pulleys with the same structure, one end or two ends of the pulleys close to each other are provided with rubber blocks for pushing against each other, pulleys matched with the convex rails 71 are arranged on the leaf pulleys 3 and the groove pulleys 42, four pulleys distributed on two sides of the pulley and two pulleys positioned at the top are respectively arranged; the slide rail is characterized in that a transmission area is arranged on one side of the sliding area of the slide rail 1, a chain rubber sleeve 72 is fixedly installed in the transmission area, the chain rubber sleeve 72 is made of smooth hard nylon, a chain groove is formed in the chain rubber sleeve 72, a part of a closed-loop chain 73 is arranged in the chain groove, the closed-loop chain 73 starts from one end of the slide rail 1, extends out from the other end of the chain groove after passing through the chain groove and winds to the upper surface of the slide rail 1, a layer of nylon rubber can be installed on the upper surface of the slide rail 1 in practice to avoid noise caused by collision of the chain and a section bar, and then returns to the starting point again after passing through the upper surface of the slide rail 1 to form a closed loop; two ends of the slide rail 1 are respectively provided with reversing gears 74 meshed with the closed-loop chains 73, one of the reversing gears 74 is connected to a driving motor in a transmission manner, the driving motor can be a double-headed motor and is placed in a frame material profile on one side, and two output ends of the driving motor respectively extend to one of the reversing gears 74 of the two slide rails 1, so that the driving force can be synchronously provided for the two slide rails 1, and the two chains are synchronously driven to rotate; in the same slide rail 1, the groove pulley 42 is positioned at the extreme end of the sliding direction of the blade 2, twelve leaf pulleys 3 are sequentially arranged behind the groove pulley 42, wherein the leaf pulley 3 closest to the groove pulley 42 is fixedly connected to one section of the closed-loop chain 73 and serves as a driving pulley 31, the driving pulley 31 is driven to move by the rotation of the chain, and the other leaf pulleys 3 are driven pulleys; the end provided with the driving pulley 31 is taken as the starting end, the last but one leaf pulley 3 at the tail end is taken as a groove pulley 42 and is rotatably connected with a swing rod 41 of the limiting groove 4 far away from one end of the driving pulley 31.

The upper end of the blade 2 is provided with an adhesive tape groove, and a waterproof adhesive tape 23 is arranged in the adhesive tape groove; the lower end of the blade 2 is provided with a waterproof hook 24 matched with the waterproof rubber strip 23, as shown in fig. 13, when the blade 2 is turned over and closed, the waterproof hook 24 is clamped into a gap between the waterproof rubber strip 23 and the blade 2, rainwater can only flow into the waterproof hook 24 through the outer side of the waterproof rubber strip 23, a water groove extending to two sides is formed at the waterproof hook 24, the rainwater is guided to the slide rails 1 at two sides, and at the moment, the waterproof purpose can be achieved only by arranging a water guide groove on the outer surface of the slide rail 1 to receive the rainwater and discharge the rainwater outdoors; the upper part of the blade 2 is provided with a power shaft 21, and the power shaft 21 is rotationally connected to the corresponding blade pulley 3; the blades 2 are also provided with parallel shafts 22, the two ends of each parallel shaft 22 are provided with parallel wheels 221 matched with the limiting grooves 4, the parallel wheels 221 on the same side of each blade 2 are inserted into the same limiting groove 4, the parallel wheels 221 can slide in the limiting grooves 4, the parallel shafts 22 between the blades 2 are connected with each other through the limiting grooves 4 with U-shaped sections, the two ends of each limiting groove 4 are arranged in a sealing manner, the parallel shafts 22 are prevented from sliding out of the limiting grooves 4, and the limiting grooves 4 limit each parallel shaft 22 to be at the same height; two ends of one side of the limiting groove 4, which is far away from the blade 2, are respectively provided with a swing rod 41, one end of each swing rod 41 is rotatably connected to the limiting groove 4, the other end of each swing rod 41 is rotatably connected to the groove pulley 42, one swing rod 41 is connected to the first groove pulley 42, and the other swing rod 41 is connected to the penultimate leaf pulley 3; the power shaft 21 is rotatably provided with cable sleeves 81, the cable sleeves 81 at the same end of all the power shafts 21 are fixedly connected with the same steel cable 8 at the same time, one end of the steel cable 8 far away from the driving pulley 31 is fixedly connected to the slide rail 1 or a frame material profile at one side, the sliding stroke of all the blades is limited by the steel cable 8, the power shaft 22 of each blade 2 is used as the rotating axis of each blade and deviates from the horizontal central axis of the blade 2, so that the heavier end of each blade 2 can naturally droop, the blade 2 is connected to a double-end driving motor through the power shaft 22, the blade pulley 3 and a closed-loop chain 73 in a transmission manner, the double-end driving motor synchronously drives the two ends of each blade 2 to slide and is arranged on the two slide rails 1, and the slide rail 1 is provided with a supporting structure for supporting the blade 2 to enable the blade 2 to turn over and close at the turning-over closing position corresponding to the blade 2; the supporting structure comprises three supporting wheels 5, and the supporting wheels 5 are rotatably arranged on the side surface of the sliding rail 1; a supporting point is arranged at one end of the swing rod 41 close to the limiting groove 4, the supporting point is defined for convenience of description, actually, the point where the swing rod 41 is in contact with the supporting wheel 5 is the supporting point, the supporting point serves as a fulcrum of a lever, and the swing rod 41 serves as a lever for prying up the limiting groove 4; in actual production, a point closer to the limiting groove 4 is selected as a supporting point on the oscillating bar, the track passed by the supporting point in the process of turning and closing the blade 2 is a supporting track, and the supporting wheels 5 are distributed along the supporting track to ensure that the supporting point is always contacted with one of the supporting wheels 5 in the process of turning the blade 2, so that the oscillating bar 41 can always serve as a lever in the sliding process to keep the upwarp force on the limiting groove 4.

In a preferred embodiment, the groove pulley 42 and the leaf pulley 3 as the groove pulley 42 are both provided with a suspension rod 43, and one end of the swing rod 41 connected to the groove pulley 42 is rotatably connected to the suspension rod 43; the length of the boom 43 is equal to the height difference between the power shaft 21 and the parallel shaft 22 when the blades 2 are in the closed state; one side of the limiting groove 4 far away from the blade 2 is provided with two bearing wheels 6, and one side of the sliding rail 1 close to the blade 2 is provided with two bearing inclined rails 61 matched with the bearing wheels 6.

The shutter grille provided in this embodiment operates as follows, when the blades 2 are in a stacked state (i.e., all the blades are turned down and stacked close to each other on one side of the window opening), the other side of the window opening is fully opened, so that ventilation and sunlight enjoyment can be achieved. When needing to close, start driving motor, driving motor drives closed loop chain 73 and rotates, and the initiative coaster 31 is followed and is removed and drive first blade 2 and remove, because fixedly connected with steel cable 8 on the blade 2, when the removal of initiative coaster 31 made the steel cable 8 between first blade 2 and the second blade 2 taut, the initiative coaster 31 continues to remove and can drive the removal of second blade 2 simultaneously. Similarly, when the driving pulley 31 continues to move, all the blades 2 are gradually pulled apart by the action of the cable 8, so as to form the effect of the window blind, and the driving motor can be selectively turned off.

If the driving motor continues to operate, the driving pulley 31 is driven to continue to move, when the driving pulley 31 contacts the groove pulley 42, the groove pulley 42 is driven to move together, at the moment, the upper part of the swing rod 41 moves, the lower part of the swing rod is supported by the supporting wheel 5 to incline, and the limiting groove 4 is pried at the same time, along with the continuous movement of the driving pulley 31, the supporting wheel 5 changes and further pries the limiting groove 4, the swing rods 41 at the two ends of the limiting groove 4 simultaneously act to enable the limiting groove 4 to gradually rise and drive the blade 2 to turn upwards and form a closed state, at the moment, because one end of the steel cable 8 is fixedly connected to the frame section or the slide rail 1, the blade 2 cannot excessively move along with inertia, and the use effect is influenced.

Similarly, when the shutter needs to be opened, the driving pulley 31 is driven to move reversely, the groove pulley 42 loses thrust support, that is, the limiting groove 4 loses rising lifting force, and the blade 2 turns downwards under the action of self weight to be opened, so that the shutter effect is formed. If the blade needs to be further opened, the driving pulley 31 is continuously driven to move, so that the driving pulley 31 sequentially pushes all the blade pulleys 3 to move, and drives the blades 2 to be stacked to one side, thereby realizing the effect of stacking and opening.

In practical application, a limiting structure for the up-and-down stroke of the limiting groove 4 can be arranged on the sliding rail 1, so that the situation that the limiting groove 4 moves excessively to cause reverse overturning of the blade 2 is avoided.

Example two:

the difference between the stackable turnover louver grille shown in fig. 14 and the first embodiment is that the parallel shafts 22, the limiting grooves 4, the swing rods 41, the supporting wheels 5 and other structures of the blades are arranged above the power shaft 21, and the limiting grooves 4 are pressed down through the cooperation of the swing rods 41 and the supporting wheels 5 to drive the tops of the blades 2 to turn downwards to realize closing. In practical application, an extension structure can be added in the blade, so that the swing space of the blade 2 is increased, and the limit groove 4, the swing rod 41 and the supporting wheel 5 are convenient to mount. In the embodiment, the suspension rod 43, the swing rod 41 and the supporting wheel 5 are arranged in a mirror symmetry way compared with the first embodiment, and the bearing wheel 6 and the bearing inclined rail 61 move upwards to a proper position and bear the limiting groove 4.

The above examples only show two embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A stackable turnover louver grid comprises a sliding rail (1) and a plurality of rotating blades (2) arranged on the sliding rail (1), and is characterized in that the rotating axes of the blades (2) deviate from the horizontal central axis of the blades (2) to enable the blades (2) to naturally droop, and a plurality of blade pulleys (3) are arranged in the sliding rail (1) in one-to-one correspondence with the blades (2); the upper part of the blade (2) is provided with a power shaft (21), the power shaft (21) is rotationally connected to the blade pulley (3), the blade (2) is also provided with a parallel shaft (22), the end parts of the parallel shafts (22) of all the blades (2) on the same side of the blade (2) are connected to the same limiting structure in a sliding manner, the limiting structure limits each parallel shaft (22) to be at the same height, two ends of one side of the limiting structure, which is far away from the blade (2), are respectively provided with a swing rod (41), one end of each swing rod (41) is rotationally connected to the limiting structure, the other end of each swing rod is rotationally connected to the groove pulley (42), the groove pulleys (42) are installed on the sliding rail (1) in a sliding manner, and the sliding rail (1) is provided with a supporting wheel (5) for supporting the swing rods (41) to enable the blade (2) to be rotationally closed at the position corresponding to the blade (2), the swing rod (41) is provided with a supporting point, and the supporting point is contacted with the supporting wheel (5) in the overturning process of the blade (2); one groove pulley (42) is positioned at the extreme end of the sliding direction of the blade (2), a plurality of blade pulleys (3) are arranged behind the groove pulley (42), the blade pulley (3) closest to the groove pulley (42) is connected to a power assembly in a transmission mode to serve as a driving pulley (31) and is mounted on the sliding rail (1) in a sliding mode under the driving of the power assembly, the power assembly comprises a driving motor, and the other blade pulleys (3) are driven pulleys; one end provided with the driving pulley (31) is taken as an initial end, the other groove pulley (42) leans to the tail end and is rotationally connected with a limit groove (4) to keep away from an oscillating bar (41) at one end of the driving pulley (31), the same end of all power shafts (21) is fixedly connected with the same steel cable (8) at the same time, and the driving pulley (31) drives the driven pulley to slide through the steel cable (8).

2. A stackable turnover louver grid according to claim 1, characterized in that the upper ends of said blades (2) are provided with slots for the strips of glue, inside which are provided waterproofing glue strips (23); the lower end of the blade (2) is provided with a waterproof hook (24) matched with the waterproof rubber strip (23).

3. A stackable turnover louver grid according to claim 1, characterized in that the limiting structure is a limiting groove (4) with a U-shaped section, two ends of the limiting groove (4) are sealed, the end of the parallel shaft (22) is provided with parallel wheels (221) matched with the limiting groove (4), the parallel wheels (221) on the same side of all the blades (2) are inserted into the same limiting groove (4), and the parallel wheels (221) can slide in the limiting groove (4).

4. A stackable turnover louver according to claim 3, wherein said channel block (42) is provided with a suspension rod (43), and said swing rod (41) is connected to one end of the channel block (42) and rotatably connected to the suspension rod (43); the length of the suspender (43) is equal to the height difference between the power shaft (21) and the parallel shaft (22) when the blade (2) is in a closed state.

5. A stackable and overturnable louvre grille as claimed in claim 4, wherein said supporting wheels (5) are provided in a plurality, the supporting wheels (5) being rotatably mounted on the lateral surfaces of the sliding track (1); one end of the swing rod (41) close to the limiting groove (4) is provided with a supporting point, the track of the supporting point passing through in the turning and closing process of the blade (2) is a supporting track, and the supporting wheels (5) are distributed along the supporting track to enable the supporting point to be always in contact with one of the supporting wheels (5) in the turning process of the blade (2).

6. A stackable turnover louver grid according to claim 5, characterized in that the side of the limiting groove (4) away from the blades (2) is provided with a plurality of force bearing wheels (6), and the side of the sliding rail (1) close to the blades (2) is provided with a plurality of force bearing inclined rails (61) matched with the force bearing wheels (6).

7. A stackable turnover louver grid according to claim 6, characterized in that, a sliding area is arranged in said sliding track (1), a plurality of convex tracks (71) are arranged in said sliding area, pulleys matched with said convex tracks (71) are arranged on said leaf pulley (3) and said groove pulley (42); the sliding rail is characterized in that a transmission area is arranged on one side of the sliding area of the sliding rail (1), a chain rubber sleeve (72) is fixedly installed in the transmission area, a chain groove is formed in the chain rubber sleeve (72), a part of a closed-loop chain (73) is arranged in the chain groove, the closed-loop chain (73) starts from one end of the sliding rail (1), extends out from the other end of the chain groove after passing through the chain groove and winds to the upper surface of the sliding rail (1), and then returns to the starting point again after passing through the upper surface of the sliding rail (1) to form a closed loop; two ends of the slide rail (1) are provided with reversing gears (74) meshed with the closed-loop chain (73), and one reversing gear (74) is connected to a driving motor in a transmission way; the leaf pulley (3) closest to the groove pulley (42) is fixedly connected to one section of the closed-loop chain (73) and serves as a driving pulley (31), and the other leaf pulleys (3) are driven pulleys; one of the leaf pulleys (3) with the inverted tail end is simultaneously used as a groove pulley (42) and is rotationally connected with a swing rod (41) at one end of a limiting groove (4) far away from the driving pulley (31); the power shaft (21) on the pivoted be provided with cable cover (81), the same one steel cable (8) of cable cover (81) of the same end of all power shafts (21) while fixedly connected with, one end fixed connection to slide rail (1) that keep away from initiative coaster (31) of steel cable (8).