Movable protective shed for construction

Abstract

The invention belongs to the technical field of construction protection, and particularly relates to a movable protective shed for construction. The two ends of the transverse plate are both slidably connected with sliding plates. By integrating the advantages of light structure, high adaptability, good protection effect, convenience in movement and the like, a transverse plate serves as a main frame, a sliding plate and a supporting plate which are in sliding connection with the two ends provide stable supporting, and the opening length can be adjusted according to the width of a construction site; all-directional protection on the top of the greenhouse is achieved, the damping effect and the angle adjusting function are utilized, the top of the greenhouse can change along with the width of the greenhouse, a good air flowing environment can be provided, and particularly skillfully, sliding frames, first limiting plates and short rods are matched with one another, so that the greenhouse can flexibly cope with different terrains, and the adaptability of the greenhouse is improved. The protective shed is high in adaptability, convenient to operate and very suitable for various complex construction environments.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction protection, and specifically relates to a movable protection shed for construction. Background Art

[0002] A construction protection shed is a temporary structure used in a construction site to protect workers, equipment, and the surrounding environment. It is an important facility to ensure construction safety. Reasonable use can significantly improve construction safety and effectively prevent falling object injuries.

[0003] A patent application with the publication number CN118815224A discloses a protection shed for track construction, which includes two symmetrically arranged support frames. Each bottom of the support frame is fixedly connected with two support legs. A tarpaulin is arranged above the support frame. The support legs are telescopic support legs with adjustable height. Each bottom of the support legs is fixedly connected with a universal wheel. Through the provided protection mechanism, this application can play a buffering role when dirt, garbage, etc. fall, and can also transfer the dirt, garbage, and other objects adsorbed above the tarpaulin to the lower part of the tarpaulin, preventing deformation and depression above the tarpaulin.

[0004] When using a protection shed at a construction site, although the above protection shed can play a buffering and protection role for falling sundries, due to the fixed width of the traditional movable protection shed for construction, it is difficult to flexibly adjust the protection width according to different construction sites, resulting in the movable protection shed being difficult to be applicable to more construction sites.

[0005] Therefore, the present invention provides a movable protection shed for construction. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A movable protection shed for construction according to the present invention includes a cross plate; both ends of the cross plate are slidably connected with sliding plates; the bottom ends of the two sliding plates are fixedly connected with support plates; a plurality of first insertion rods are fixedly connected to the outer walls of the two support plates; a plurality of insertion holes are provided at one end of the two support plates away from the first insertion rods, and the first insertion rods and the insertion holes are arranged correspondingly; a protection mechanism is arranged at the top end of the cross plate, and the protection mechanism is used for shielding and protecting the top of the shed when it is unfolded and not unfolded.

[0008] Preferably, the protection mechanism includes a fixed cylinder, a friction damping cylinder, a sliding rod, a fixed rod, a first hinge piece, a second hinge piece, a shielding plate and a connection assembly; the fixed cylinder is fixedly connected to the middle top end of the cross plate; the friction damping cylinder is fixedly connected to the top end of the fixed cylinder; the sliding rod is slidably connected to the inner wall of the friction damping cylinder; the fixed rod is fixedly connected to the top end of the sliding rod; the first hinge piece and the second hinge piece are respectively rotatably connected to the fixed rod in an alternating manner; the two shielding plates are respectively fixedly connected to one ends of the first hinge piece and the second hinge piece away from the fixed rod; the connection assembly is arranged on the shielding plate, and the connection assembly is used to fix the shielding plate on the sliding plate and deform therewith.

[0009] Preferably, the connection assembly includes a rotating roller and a telescopic rod; the two rotating rollers are respectively rotatably connected to the shielding plate and the sliding plate; the telescopic rod is fixedly connected between the two rotating rollers.

[0010] Preferably, two sliding brackets are slidably connected to the outer wall of the support plate, and the two sliding brackets are arranged oppositely; the bottom ends of the two sliding brackets are rotatably connected to a rotating shaft; a pulley is fixedly connected to the bottom end of the rotating shaft; a connecting rod is fixedly connected to the outer wall of the sliding bracket, and the connecting rod is fixedly connected between the two sliding brackets.

[0011] Preferably, a first limiting plate is slidably connected to the inner wall of the support plate near the sliding bracket; a plurality of short rods are fixedly connected to one end of the first limiting plate close to the sliding bracket, and a circular hole is opened in the sliding bracket near the short rods; a first elastic member is fixedly connected to one side of the protruding portion of the first limiting plate away from the sliding bracket.

[0012] Preferably, a second insertion rod is inserted into the inner wall of the sliding bracket near the rotating shaft; a second elastic member is sleeved on the second insertion rod, and one end of the second elastic member is fixedly connected to the outer wall of the sliding bracket; a limiting hole is opened on the rotating shaft, and the limiting hole is arranged corresponding to the second insertion rod.

[0013] Preferably, a second limiting plate is slidably connected to the inner wall of the bottom end of the sliding bracket, and two blocks are fixedly connected to the bottom end of the second limiting plate; a square hole is opened on the outer wall of the pulley, and the square hole is arranged corresponding to the blocks; two threaded holes are opened on the inner wall of the sliding bracket; a bolt is threadedly connected to the inner wall of the second limiting plate, and the bolt is threadedly connected in the threaded holes.

[0014] Preferably, a rotating rod is rotatably connected to the outer wall of the support plate; a first protection plate is fixedly connected to the outer wall of the rotating rod; a second protection plate is slidably connected to the inner wall of the first protection plate through a third elastic member.

[0015] Preferably, a wind groove is opened in the middle of the support plate; a fixing plate is fixedly connected to the inner wall of the wind groove.

[0016] Preferably, the cross-sectional shape of the second limiting plate is L-shaped, and the two blocks are respectively fixedly connected to both sides of the bottom end of the second limiting plate.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The movable protective shed for construction described in the present invention integrates various advantages such as light structure, strong adaptability, good protection effect, and convenient movement. It relies on the cross plate as the main frame, and the sliding plates and support plates slidably connected at both ends provide stable support. It can adjust the opening length according to the width of the construction site. The protection mechanism, through the design of the fixed cylinder, friction damping cylinder, and sliding rod, realizes the all-round protection of the shed top. Utilizing the damping effect and angle adjustment function, it can not only make the shed top change with the change of the shed width but also provide a good air flow environment. Particularly ingeniously, the sliding frame, the first limiting plate, and the short rod cooperate with each other to flexibly cope with different terrains. This kind of protective shed is not only highly adaptable but also easy to operate, and is very suitable for various complex construction environments.

[0019] 2. The movable protective shed for construction described in the present invention can ensure the stability of the protective shed during use by adjusting the limit of the pulley. The wind grooves opened on the support plate cooperate with the fixed plate, which not only ensures the high-altitude protection but also enables the internal air of the protective shed to flow smoothly. The rotating rod, the first protection plate, and the second protection plate cooperate with each other to block between the two sliding frames according to different site height differences, reducing the situation of sundries entering the shed interior from between the two sliding frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a three-dimensional view of the present invention;

[0022] Figure 2 is a schematic structural view of the insertion hole in the present invention;

[0023] Figure 3 is a schematic structural view of the support plate in the present invention;

[0024] Figure 4 is a schematic structural view of the rotating shaft in the present invention;

[0025] Figure 5 is a schematic structural view of the limiting plate in the present invention;

[0026] Figure 6 is a schematic structural view of the telescopic rod in the present invention.

[0027] In the figure: 1, cross plate; 11, sliding plate; 12, support plate; 13, first insertion rod; 14, insertion hole; 2, fixed cylinder; 21, friction damping cylinder; 22, sliding rod; 23, fixed rod; 24, first hinge piece; 25, second hinge piece; 26, shielding plate; 3, rotating roller; 31, telescopic rod; 4, sliding frame; 41, rotating shaft; 42, pulley; 43, connecting rod; 5, first limiting plate; 51, short rod; 52, first elastic member; 6, second insertion rod; 61, second elastic member; 7, second limiting plate; 71, bolt; 8, rotating rod; 81, first protection plate; 82, second protection plate; 9, fixing plate; 91, wind groove. Specific embodiments

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0029] As Figures 1 to 3 , Figure 6 shown, a movable protective shed for construction described in an embodiment of the present invention includes a cross plate 1; both ends of the cross plate 1 are slidably connected with sliding plates 11; the bottoms of the two sliding plates 11 are fixedly connected with support plates 12; a plurality of first insertion rods 13 are fixedly connected to the outer walls of the two support plates 12; a plurality of insertion holes 14 are opened at one ends of the two support plates 12 far from the first insertion rods 13, and the first insertion rods 13 and the insertion holes 14 are arranged in correspondence; a protection mechanism is arranged at the top of the cross plate 1, and the protection mechanism is used for shielding and protecting the top of the shed when it is unfolded and not unfolded; when using the movable protective shed at the construction site, the protective shed is built in a plurality of splicing methods. First, a single protective frame is spliced. The cross plate 1 is used as the main support of the movable protective shed. According to the width of different construction sites, the two sliding plates 11 are adaptively adjusted to slide at both ends of the cross plate 1, shortening or extending the support width of the cross plate 1. The two support plates 12 respectively support the bottoms of the two sliding plates 11. Finally, the protection mechanism is installed above the cross plate 1 and the two sliding plates 11. At this time, a single protective frame is spliced. Subsequently, according to the length of the construction site, a plurality of single protective frames are spliced respectively by inserting a plurality of first insertion rods 13 into a plurality of insertion holes 14, so as to realize the construction of the movable protective shed for construction and improve the applicability of the protective shed.

[0030] The protection mechanism includes a fixed cylinder 2, a friction damping cylinder 21, a sliding rod 22, a fixed rod 23, a first hinge piece 24, a second hinge piece 25, a shielding plate 26 and a connection assembly; the fixed cylinder 2 is fixedly connected to the middle top of the cross plate 1; the friction damping cylinder 21 is fixedly connected to the top of the fixed cylinder 2; the sliding rod 22 is slidably connected to the inner wall of the friction damping cylinder 21; the fixed rod 23 is fixedly connected to the top of the sliding rod 22; the first hinge piece 24 and the second hinge piece 25 are respectively rotatably connected to the fixed rod 23 in a staggered manner; the two shielding plates 26 are respectively fixedly connected to the ends of the first hinge piece 24 and the second hinge piece 25 away from the fixed rod 23; the connection assembly is arranged on the shielding plate 26, and the connection assembly is used to fix the shielding plate 26 on the sliding plate 11 and deform accordingly; when the protective shed is built at the construction site to prevent high-altitude falling objects, the fixed rod 23 is used as the main support at the top of the protective shed, the first hinge piece 24 and the second hinge piece 25 are respectively rotatably connected to the fixed rod 23 for adjusting the angles of the two shielding plates 26, the two shielding plates 26 shield and guide the high-altitude falling objects to fall, the connection assembly is used to connect the shielding plate 26 and the sliding plate 11, and when a force is applied to the sliding rod 22 to make it slide on the inner wall of the friction damping cylinder 21, there will be a damping feeling, and when no force is applied to the sliding rod 22, the friction damping cylinder 21 limits the sliding rod 22. When the two sliding plates 11 slide away from the cross plate 1 to unfold the protective shed, the sliding rod 22 can slide down on the inner walls of the friction damping cylinder 21 and the fixed cylinder 2, and the two shielding plates 26 form an obtuse angle shape as they rotate on the fixed rod 23 with the first hinge piece 24 and the second hinge piece 25; when the two sliding plates 11 slide close to the cross plate 1 to contract the protective shed, the sliding rod 22 can slide up on the inner walls of the friction damping cylinder 21 and the fixed cylinder 2, and the two shielding plates 26 form an acute angle shape as they rotate on the fixed rod 23 with the first hinge piece 24 and the second hinge piece 25, so as to adaptively adjust the two shielding plates 26 at the top of the protective shed according to the width of the protective shed.

[0031] The connection assembly includes a rotating roller 3 and a telescopic rod 31; the two rotating rollers 3 are respectively rotatably connected to the shielding plate 26 and the sliding plate 11; the telescopic rod 31 is fixedly connected between the two rotating rollers 3; when connecting the shielding plate 26 and the sliding plate 11, the two rotating rollers 3 are respectively fixed on the adjacent walls of the shielding plate 26 and the sliding plate 11, and both ends of the telescopic rod 31 are respectively fixed between the two rotating rollers 3. As the protective shed unfolds or contracts, the telescopic rod 31 cooperates with the two rotating rollers 3 to rotate while telescoping, playing a role in connecting the shielding plate 26 and the sliding plate 11.

[0032] Such as Figures 1 to 5As shown in the figure, two sliding frames 4 are slidably connected to the outer wall of the support plate 12, and the two sliding frames 4 are arranged oppositely; the bottom ends of the two sliding frames 4 are rotatably connected to a rotating shaft 41; a pulley 42 is fixedly connected to the bottom end of the rotating shaft 41; a connecting rod 43 is fixedly connected to the outer wall of the sliding frame 4, and the connecting rod 43 is fixedly connected between the two sliding frames 4; when the protective shed needs to be transferred over a short distance, two pulleys 42 are respectively assembled at the bottom of each support plate 12. The pulleys 42 rotate at the bottom end of the sliding frame 4 through the rotating shaft 41 and can move in multiple directions, facilitating the movement of the protective shed. At the same time, when facing a construction site with potholes or a large height difference, hold the connecting rod 43 and slide the two sliding frames 4 down the outer wall of the support plate 12, lower the pulleys 42 to the ground, and the sliding frames 4 extend out of the support plate 12 for adjusting the height support. Finally, fix and limit the sliding frames 4 to improve the applicability of the protective shed to different road conditions.

[0033] As Figures 1 to 4 As shown in the figure, a first limiting plate 5 is slidably connected to the inner wall of the support plate 12 near the sliding frame 4; a plurality of short rods 51 are fixedly connected to one end of the first limiting plate 5 close to the sliding frame 4, and a circular hole is opened in the sliding frame 4 near the short rods 51; a first elastic member 52 is fixedly connected to the protruding portion of the first limiting plate 5 away from the sliding frame 4; when adjusting the height of the sliding frame 4, first pull the first limiting plate 5 to slide away from the sliding frame 4. During the pulling process, the short rods 51 are pulled out of the circular hole of the sliding frame 4, and the first elastic member 52 at the protruding portion is squeezed and contracted under force. Then, slide the sliding frame 4 down to be applicable to a construction site with a large height difference. After the adjustment is completed, release the first limiting plate 5, and the first elastic member 52 elastically squeezes the first limiting plate 5 to slide, and the plurality of short rods 51 slide synchronously. One of the short rods 51 is inserted into the circular hole of the sliding frame 4 to limit the sliding frame 4, playing a role in limiting the height of the sliding frame 4.

[0034] A second insertion rod 6 is inserted into the inner wall of the sliding frame 4 near the rotating shaft 41; a second elastic member 61 is sleeved on the second insertion rod 6, and one end of the second elastic member 61 is fixedly connected to the outer wall of the sliding frame 4; a limiting hole is opened on the rotating shaft 41, and the limiting hole is arranged corresponding to the second insertion rod 6; when using the pulley 42 to move the protective shed over a short distance, use the second elastic member 61 to pull the second insertion rod 6, so that the second insertion rod 6 penetrates the inner wall of the sliding frame 4 and is inserted into the limiting hole of the rotating shaft 41 to limit the pulley 42 from moving back and forth, and then push or pull the protective shed to displace; when unfolding or contracting the protective shed, pull out the second insertion rod 6 from the limiting hole of the rotating shaft 41, and the pulley 42 rotates through the rotating shaft 41 to adjust the traveling direction. At this time, the pulley 42 can move in multiple directions, facilitating the unfolding or contraction of the protective shed.

[0035] As Figures 1 to 5As shown in the figure, a second limiting plate 7 is slidably connected to the inner wall of the bottom end of the sliding frame 4, and two blocks are fixedly connected to the bottom end of the second limiting plate 7; a square hole is formed in the outer wall of the pulley 42, and the square hole is correspondingly arranged with the block; two threaded holes are formed in the inner wall of the sliding frame 4; a bolt 71 is threadedly connected to the inner wall of the second limiting plate 7, and the bolt 71 is threadedly connected in the threaded hole; after the protective shed is installed, since the pulley 42 is likely to drive the protective shed to displace, the second limiting plate 7 slides down on the inner wall of the sliding frame 4, and the two blocks are correspondingly inserted into the square holes in the outer walls of the two pulleys 42 for limiting, and the bolt 71 is passed through the second limiting plate 7 and threadedly connected to a threaded hole in the lower part of the inner wall of the sliding frame 4 for fixing, so as to play a role in limiting the plurality of pulleys 42. If the pulley 42 needs to be used, the bolt 71 is screwed out and the second limiting plate 7 is slid up, and the two blocks leave the square holes of the two pulleys 42 to release the limit, and the bolt 71 is passed through the second limiting plate 7 and screwed into an upper threaded hole for fixing.

[0036] As Figures 1 to 3 shown, a rotating rod 8 is rotatably connected to the outer wall of the support plate 12; a first protective plate 81 is fixedly connected to the outer wall of the rotating rod 8; a second protective plate 82 is slidably connected to the inner wall of the first protective plate 81 through a third elastic member; when the protective shed is placed on a construction site with a large height difference, the sliding frame 4 drives the pulley 42 to slide to fill the height difference, and then the second protective plate 82 is extruded to contract into the interior of the first protective plate 81 by the third elastic member, and the first protective plate 81 rotates from above to below in cooperation with the rotating rod 8, and then the third elastic member extrudes the second protective plate 82 to slide out. The first protective plate 81 and the second protective plate 82 can cooperate to shield and protect between the two sliding frames 4, reducing the situation that sundries enter from between the two extended sliding frames 4.

[0037] As Figures 1 to 3 shown, a wind groove 91 is formed in the middle of the support plate 12; a fixing plate 9 is fixedly connected to the inner wall of the wind groove 91; during the use of the protective shed, since the upper part and both sides of the protective shed are closed, affecting the air flow inside, the wind groove 91 is opened in the middle of the support plate 12 to accelerate the air flow inside the protective shed, and the fixing plate 9 is fixed at the wind groove 91 for shielding. The fixing plate 9 can also be made into a curved shape, mainly for shielding sundries and guiding the flow, so that the air can flow between the fixing plate 9 and the wind groove 91, improving the air flow speed inside the protective shed.

[0038] As Figures 1 to 5As shown, the cross-sectional shape of the second limiting plate 7 is L-shaped, and two blocks are respectively fixedly connected to both sides of the bottom end of the second limiting plate 7; when limiting the pulley 42, the L-shaped second limiting plate 7 slides on the inner wall of the sliding frame 4. When the second limiting plate 7 slides upward, it drives the two blocks to leave the square holes of the two pulleys 42 to release the limit on the pulley 42. When the second limiting plate 7 slides downward, it drives the two blocks to insert into the square blocks of the two pulleys 42 to limit the pulley 42. According to different requirements, adaptively driving the second limiting plate 7 to slide up and down can control the movement ability of the pulley 42.

[0039] Working process: When using the mobile protective shed at the construction site, the protective shed is built in a way of multiple splicing. First, splice a single protective frame. Use the cross plate 1 as the main support of the mobile protective shed. According to the width of different construction sites, adaptively adjust the two sliding plates 11 to slide at both ends of the cross plate 1 to shorten or extend the support width of the cross plate 1. The two support plates 12 respectively support the bottoms of the two sliding plates 11. Finally, install the protection mechanism above the cross plate 1 and the two sliding plates 11. At this time, a single protective frame is spliced. Subsequently, according to the length of the construction site, splice multiple single protective frames by inserting multiple first insertion rods 13 into multiple insertion holes 14 respectively to realize the construction of the mobile protective shed for construction and improve the applicability of the protective shed; when the protective shed is built at the construction site to prevent high-altitude falling objects, use the fixed rod 23 as the main support at the top of the protective shed. The first hinge piece 24 and the second hinge piece 25 are respectively rotatably connected to the fixed rod 23 for adjusting the angles of the two shielding plates 26. The two shielding plates 26 shield and protect high-altitude falling objects and guide them to fall. A connection component is used to connect the shielding plate 26 and the sliding plate 11. When a force is applied to the sliding rod 22 to make it slide in the inner wall of the friction damping cylinder 21, there will be a damping feeling. When no force is applied to the sliding rod 22, the friction damping cylinder 21 limits the sliding rod 22. When the two sliding plates 11 slide away from the cross plate 1 to expand the protective shed, the sliding rod 22 can slide down the inner walls of the friction damping cylinder 21 and the fixed cylinder 2. The two shielding plates 26 rotate around the first hinge piece 24 and the second hinge piece 25 on the fixed rod 23 to form an obtuse angle shape; when the two sliding plates 11 slide close to the cross plate 1 to contract the protective shed, the sliding rod 22 can slide up the inner walls of the friction damping cylinder 21 and the fixed cylinder 2. The two shielding plates 26 rotate around the first hinge piece 24 and the second hinge piece 25 on the fixed rod 23 to form an acute angle shape, which can adaptively adjust the two shielding plates 26 at the top of the protective shed according to the width of the protective shed; when connecting the shielding plate 26 and the sliding plate 11, use two rotating rollers 3 to be respectively fixed on the walls of the shielding plate 26 and the sliding plate 11 close to each other. The two ends of the telescopic rod 31 are respectively fixed between the two rotating rollers 3. As the protective shed expands or contracts, the telescopic rod 31 cooperates with the two rotating rollers 3 to rotate while telescoping, playing a role in connecting the shielding plate 26 and the sliding plate 11.

[0040] When the protective shed is transferred over a short distance, two pulleys 42 are respectively assembled at the bottom of each support plate 12. The pulleys 42 rotate on the bottom end of the sliding frame 4 through a rotating shaft 41 and can move in multiple directions, facilitating the movement of the protective shed. At the same time, when facing a construction site with potholes or a large height difference, hold the connecting rod 43 and slide the two sliding frames 4 down the outer wall of the support plate 12, lower the pulleys 42 to the ground. The sliding frame 4 extends out of the support plate 12 for adjusting the height support. Finally, fix and limit the sliding frame 4 to improve the applicability of the protective shed to different road conditions; when adjusting the height of the sliding frame 4, first pull the first limiting plate 5 to slide away from the sliding frame 4. During the pulling process, the short rod 51 is pulled out of the round hole of the sliding frame 4, and the first elastic member 52 at the protruding part is squeezed and contracted under force. Then, slide the sliding frame 4 down to be applicable to a construction site with a large height difference. After the adjustment is completed, release the first limiting plate 5. The first elastic member 52 elastically squeezes the first limiting plate 5 to slide, and multiple short rods 51 slide synchronously. One of the short rods 51 is inserted into the round hole of the sliding frame 4 to limit the sliding frame 4, playing a role in limiting the height of the sliding frame 4;

[0041] When using the pulleys 42 to move the protective shed over a short distance, use the second elastic member 61 to pull the second insertion rod 6, so that the second insertion rod 6 penetrates the inner wall of the sliding frame 4 and is inserted into the limiting hole of the rotating shaft 41 to limit the pulleys 42 from moving back and forth. Push or pull the protective shed to displace; when unfolding or contracting the protective shed, pull out the second insertion rod 6 from the limiting hole of the rotating shaft 41. The pulleys 42 rotate through the rotating shaft 41 to adjust the traveling direction. At this time, the pulleys 42 can move in multiple directions, facilitating the unfolding or contraction of the protective shed; after the protective shed is installed, since the pulleys 42 are likely to drive the protective shed to displace, use the second limiting plate 7 to slide down the inner wall of the sliding frame 4. Two squares are respectively inserted into the square holes on the outer walls of the two pulleys 42 for limiting, and use a bolt 71 to penetrate the second limiting plate 7 and be threadedly connected to a threaded hole below the inner wall of the sliding frame 4 for fixation, playing a role in limiting multiple pulleys 42. If it is necessary to use the pulleys 42, unscrew the bolt 71 and slide the second limiting plate 7 upward. The two squares leave the square holes of the two pulleys 42 to release the limit. Then, penetrate the bolt 71 through the second limiting plate 7 and screw it into an upper threaded hole for fixation; when limiting the pulleys 42, the L-shaped second limiting plate 7 slides on the inner wall of the sliding frame 4. When the second limiting plate 7 slides upward, it drives the two squares to leave the square holes of the two pulleys 42 to release the limit on the pulleys 42. When the second limiting plate 7 slides downward, it drives the two squares to insert into the squares of the two pulleys 42 to limit the pulleys 42. According to different situation requirements, adaptively drive the second limiting plate 7 to slide up and down to control the movement ability of the pulleys 42;

[0042] When the protective shed is placed on a construction site with a large height difference, the sliding frame 4 drives the pulley 42 to slide to fill the height difference. Subsequently, the second protective plate 82 is squeezed by the third elastic member and retracted into the first protective plate 81. The first protective plate 81 rotates from above to below in cooperation with the rotating rod 8. Then, the third elastic member squeezes the second protective plate 82 to slide out. The first protective plate 81 and the second protective plate 82 can cooperate to shield and protect between the two sliding frames 4, reducing the situation where sundries enter between the two extended sliding frames 4;

[0043] During the use of the protective shed, since the upper part and both sides of the protective shed are closed, which affects the air flow inside, the air duct 91 is opened in the middle of the support plate 12 to accelerate the air flow inside the protective shed. The fixing plate 9 is fixed at the air duct 91 for shielding. The fixing plate 9 can also be made into a curved arc shape, mainly for the effects of shielding sundries and guiding the flow, so that the air can flow between the fixing plate 9 and the air duct 91, improving the air flow speed inside the protective shed.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A movable protective shed for construction, characterized in that: It includes a horizontal plate; sliding plates are slidably connected to both ends of the horizontal plate; support plates are fixedly connected to the bottom ends of the two sliding plates; a plurality of first insertion rods are fixedly connected to the outer walls of the two support plates; a plurality of insertion holes are formed at one ends of the two support plates away from the first insertion rods, and the first insertion rods and the insertion holes are arranged correspondingly; a protection mechanism is arranged at the top end of the horizontal plate, and the protection mechanism is used for shielding and protecting the top of the shed when it is unfolded and not unfolded.

2. The movable protective shed for construction according to claim 1, wherein: The protection mechanism includes a fixed cylinder, a friction damping cylinder, a sliding rod, a fixed rod, a first hinge piece, a second hinge piece, a shielding plate and a connection component; the fixed cylinder is fixedly connected to the middle top end of the horizontal plate; the friction damping cylinder is fixedly connected to the top end of the fixed cylinder; the sliding rod is slidably connected to the inner wall of the friction damping cylinder; the fixed rod is fixedly connected to the top end of the sliding rod; the first hinge piece and the second hinge piece are respectively rotatably connected to the fixed rod in an alternating manner; the two shielding plates are respectively fixedly connected to one ends of the first hinge piece and the second hinge piece away from the fixed rod; the connection component is arranged on the shielding plate, and the connection component is used for fixing the shielding plate on the sliding plate and deforming therewith.

3. The movable protective shed for construction according to claim 2, characterized in that: The connection component includes a rotating roller and a telescopic rod; the two rotating rollers are respectively rotatably connected to the shielding plate and the sliding plate; the telescopic rod is fixedly connected between the two rotating rollers.

4. A movable protective shed for construction according to claim 1, characterized in that: Two sliding frames are slidably connected to the outer wall of the support plate, and the two sliding frames are arranged oppositely; a rotating shaft is rotatably connected to the bottom ends of the two sliding frames; a pulley is fixedly connected to the bottom end of the rotating shaft; a connecting rod is fixedly connected to the outer wall of the sliding frame, and the connecting rod is fixedly connected between the two sliding frames.

5. The movable protective shed for construction according to claim 4, characterized in that: A first limiting plate is slidably connected to the inner wall of the support plate near the sliding frame; a plurality of short rods are fixedly connected to one end of the first limiting plate close to the sliding frame, and a circular hole is formed in the sliding frame near the short rods; a first elastic member is fixedly connected to one side of the protruding portion of the first limiting plate away from the sliding frame.

6. A movable protective shed for construction according to claim 4, characterized in that: A second insertion rod is inserted into the inner wall of the sliding frame near the rotating shaft; a second elastic member is sleeved on the second insertion rod, and one end of the second elastic member is fixedly connected to the outer wall of the sliding frame; a limiting hole is formed in the rotating shaft, and the limiting hole is arranged correspondingly to the second insertion rod.

7. A movable protective shed for construction according to claim 4, characterized in that: A second limiting plate is slidably connected to the inner bottom wall of the sliding frame, and two square blocks are fixedly connected to the bottom end of the second limiting plate; a square hole is formed in the outer wall of the pulley, and the square hole is arranged correspondingly to the square blocks; two threaded holes are formed in the inner wall of the sliding frame; a bolt is threadedly connected to the inner wall of the second limiting plate, and the bolt is threadedly connected in the threaded hole.

8. A movable protective shed for construction according to claim 1, characterized in that: A rotating rod is rotatably connected to the outer wall of the support plate; a first protection plate is fixedly connected to the outer wall of the rotating rod; a second protection plate is slidably connected to the inner wall of the first protection plate through a third elastic member.

9. The movable protective shed for construction according to claim 1, wherein: An air groove is formed in the middle of the support plate; a fixing plate is fixedly connected to the inner wall of the air groove.

10. A movable protective shed for construction according to claim 7, characterized in that: The cross-sectional shape of the second limiting plate is L-shaped, and the two square blocks are respectively fixedly connected to both sides of the bottom end of the second limiting plate.

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