A dustproof guardrail for building construction

Abstract

This invention discloses a dustproof guardrail for building construction, relating to the technical field of dust control equipment for building construction. It comprises several modular guardrail components, each including an N-shaped base, a U-shaped mounting plate, a first dustproof plate, a second dustproof plate, a third dustproof plate, isolation plates, a first roller, a first unfolding mechanism, a second unfolding mechanism, a lifting mechanism, a third unfolding mechanism, a fixing mechanism, and a cleaning mechanism. The second dustproof plate is driven to move by the first unfolding mechanism, and the first dustproof plates are all driven to slide by the second unfolding mechanism. Both isolation plates are driven to move by the third unfolding mechanism. The first and second unfolding mechanisms of this invention can expand the protective area when the equipment is in use. The third unfolding mechanism can store or unfold the two isolation plates. When the equipment is not in use, storing the isolation plates can cover the front of the dustproof plates, preventing dust accumulation due to prolonged static placement.

Description

Technical Field

[0001] This invention relates to the field of dust control equipment for building construction, specifically to a dust control guardrail for building construction. Background Technology

[0002] During building construction, construction workers usually use guardrails to isolate the construction area to avoid interference from the external environment and to prevent safety accidents. However, the construction process usually generates a lot of dust, which can spread from the construction area to the outside through the guardrails, thus posing a danger to pedestrians.

[0003] Typically, when construction workers are working in areas with high population density, they usually hang dustproof cloths on dust barriers to prevent dust from seeping through. These cloths are usually installed manually, which is laborious. Furthermore, in windy weather, the cloths can be blown off and become difficult to retrieve. With improvements, dustproof nets are gradually replacing these cloths. Dustproof nets utilize aerodynamic principles, processing the surface into specific geometric shapes. By combining different opening ratios and hole types, they form windbreak and dust suppression walls. When air flows through a wall, it creates vertical airflow interference on the inner side of the wall, achieving a windless effect on the inner side and thus preventing dust. Dustproof nets are usually clipped or directly fixed to guardrails, avoiding manual installation. However, if guardrails with dustproof nets are left stagnant for a long time, dust will accumulate in the holes of the mesh structure, making it difficult to clean and requiring regular manual cleaning, which is quite laborious. At the same time, since dustproof nets and guardrails are usually fixedly connected, if a large construction area needs to be isolated, a large number of guardrails usually need to be spliced ​​together, and the large number of guardrails increases the transportation workload.

[0004] To address the aforementioned issues, a dustproof guardrail for building construction is proposed. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a dustproof guardrail for building construction. It solves the problem that when guardrails with dustproof nets are left idle for a long time, dust accumulates in the holes of the mesh structure, making them difficult to clean and requiring regular manual cleaning, which is laborious. In addition, since the dustproof nets and guardrails are usually fixedly connected, if a large construction area needs to be isolated, a large number of guardrails usually need to be spliced ​​together, which increases the burden of transportation due to the large number of guardrails.

[0006] The technical solution adopted in this invention is as follows: it includes several modular guardrail components, wherein the modular guardrail components include an n-shaped base, a U-shaped mounting plate, a first dustproof plate, a second dustproof plate, a third dustproof plate, an isolation plate, a first roller, a first unfolding mechanism, a second unfolding mechanism, a lifting mechanism, a third unfolding mechanism, a fixing mechanism, and a cleaning mechanism.

[0007] The upper end of the horizontal plate sidewall of the n-shaped base is provided with a third dustproof plate, and the front wall of the third dustproof plate is provided with a second dustproof plate, which is driven to move by a first unfolding mechanism.

[0008] The first dustproof plate is slidably provided on both sides of the front wall of the second dustproof plate. Both first dustproof plates are driven to slide by the second unfolding mechanism. The second unfolding mechanism is driven to work by the first unfolding mechanism.

[0009] The upper ends of the two vertical plates of the n-shaped base are respectively provided with cleaning mechanisms for cleaning the dustproof net, and the two first dustproof plates are respectively driven by sliding to operate the two cleaning mechanisms.

[0010] The outer sides of the two vertical plates of the n-shaped base are respectively provided with first rollers. Both first rollers are driven to rise and fall by a lifting mechanism. The lifting mechanism is driven by the first unfolding mechanism.

[0011] The rear wall of the third dustproof plate is provided with isolation plates on both sides, and both isolation plates are driven to move by the third unfolding mechanism;

[0012] One of the first dustproof panels is driven by sliding to operate the third unfolding mechanism;

[0013] The rear wall of the horizontal plate of the n-shaped base is provided with a U-shaped mounting plate, which is located on the rear side of the third dustproof plate. The horizontal plate of the U-shaped mounting plate is fixedly connected to the lower side of the rear wall of the horizontal plate of the n-shaped base.

[0014] The two vertical plates of the U-shaped mounting plate are respectively separated from the horizontal plate of the n-shaped base by a first gap, and the two isolation plates are respectively detachably in contact within the two first gaps;

[0015] The two first gaps are respectively provided with a first slot and a second slot for splicing the isolation plate. The two first slots are respectively provided on the two vertical plate side walls of the U-shaped mounting plate, and the two second slots are respectively provided on the two vertical plate side walls of the n-shaped base.

[0016] The partition plates of two adjacent modular guardrail assemblies are respectively detachably disposed in the first slot or the second slot of the two adjacent modular guardrail assemblies;

[0017] The upper end of the horizontal plate of the U-shaped mounting plate is provided with a fixing mechanism for fixing the equipment, and the fixing mechanism is driven by the third unfolding mechanism.

[0018] Furthermore, the fixing mechanism includes an n-type locking block, a ground insertion component, a first rack plate, a first spur gear, and a main shaft;

[0019] The outer walls of the two vertical plates of the U-shaped mounting plate are respectively provided with a first straight gear through a first rotating shaft. The other ends of the two first rotating shafts respectively rotate through the two vertical plates of the U-shaped mounting plate and are fixedly connected by a main shaft.

[0020] The two first spur gears are respectively provided with first rack plates meshing on one side;

[0021] The rear walls of the two vertical plates of the U-shaped mounting plate are respectively slidably engaged with n-shaped locking blocks, and the two n-shaped locking blocks are located on the outer sides of the two vertical plates of the U-shaped mounting plate and are respectively fixedly connected to the middle ends of the two first toothed plates.

[0022] The two n-type card blocks are respectively provided with ground insertion parts at the lower ends of their horizontal plates;

[0023] The main shaft is driven to rotate by the third unfolding mechanism.

[0024] Furthermore, the third unfolding mechanism includes a worm gear, a worm, a threaded rod, an I-shaped slider, a first connecting rod, a second spur gear, a third spur gear, and a second rack plate;

[0025] A worm gear is fixedly sleeved at the middle end of the main shaft, and a worm is engaged on one side of the worm gear;

[0026] The lower end of the worm gear is rotatably connected to the upper end of the horizontal plate of the U-shaped mounting plate, and the upper end of the worm gear is fixedly provided with the first end of the threaded rod;

[0027] A horizontal mounting plate is vertically provided on the upper rear wall of the third dustproof plate. A second spur gear is fixedly provided at the second end of the threaded rod through the horizontal mounting plate. The second spur gear is rotatably provided on the upper end of the horizontal mounting plate through a thrust bearing. A third spur gear is meshed on one side of the second spur gear. The third spur gear is rotatably provided on the upper end of the horizontal mounting plate through a second rotating shaft.

[0028] The diameter of the third spur gear is larger than the diameter of the second spur gear;

[0029] The front side of the third spur gear is provided with a second rack plate, and the outer end of the second rack plate is fixedly connected to the upper end of the rear wall of the first dustproof plate near the third spur gear through a connecting post.

[0030] A second gap is left between the second rack plate and the first dustproof plate fixedly connected thereto, and the second dustproof plate is movably disposed within the second gap;

[0031] The rear wall of the third dustproof plate is provided with a T-shaped slide rail, and the first horizontal plate of the I-shaped slider is slidably arranged inside the T-shaped slide rail. The second horizontal plate of the I-shaped slider is threadedly connected to the threaded rod.

[0032] The first ends of the first connecting rods are rotatably provided on both sides of the rear wall of the second horizontal plate of the I-shaped slider, and the second ends of the two first connecting rods are rotatably connected to the middle ends of the rear walls of the two adjacent isolation plates.

[0033] The lower ends of the two isolation plates are respectively rotatably mounted on both sides of the lower end of the T-shaped slide rail;

[0034] The second horizontal plate of the I-shaped slider has a third gap between its two sides and the T-shaped slide rail, and the two isolation plates are detachably in contact within the two third gaps.

[0035] Furthermore, the second unfolding mechanism includes a second connecting rod, a first rectangular slider, and a first rectangular slide groove;

[0036] The n-shaped base is provided with a first rectangular slide groove on both sides. Both first rectangular slide grooves are provided on the front side of the third dustproof plate. The lower ends of the two first dustproof plates are provided with a first rectangular slider that cooperates with the first rectangular slide groove. The two first rectangular sliders slide and connect in the two first rectangular slide grooves respectively.

[0037] The upper ends of the front walls of the two first dustproof plates that are close to each other are respectively provided with the first ends of the second connecting rods, and the second ends of the two second connecting rods are respectively rotatably connected to the two sides of the upper ends of the front walls of the second dustproof plates.

[0038] Furthermore, the cleaning mechanism includes a fourth spur gear, a third rack plate, and a barrel brush;

[0039] The lower front wall of each of the two first dustproof plates is provided with a third rack plate, and a fourth spur gear is meshed on one side of each of the two third rack plates. The two fourth spur gears are respectively rotatably mounted on the upper ends of the two vertical plates of the n-shaped base through a third rotating shaft.

[0040] The upper ends of the two third rotating shafts are respectively fixed with roller brushes, and the two roller brushes are detachably in contact with the front walls of the two first dustproof plates.

[0041] Furthermore, the first unfolding mechanism includes a second rectangular slider, a second rectangular slide groove, a sliding rod, an operating handle, a T-shaped slider, a T-shaped slide groove, and a third connecting rod;

[0042] The inner walls of the two vertical plates of the n-shaped base are respectively provided with T-shaped grooves, and the horizontal plates with T-shaped sliders are respectively slidably installed in the two T-shaped grooves;

[0043] The two T-shaped sliders are fixedly connected at their outer ends by a sliding rod.

[0044] The upper middle part of the sliding rod is provided with a first mounting bracket, and the first end of the third connecting rod is rotatably provided inside the first mounting bracket;

[0045] A second mounting bracket is provided at the lower middle part of the front wall of the second dustproof plate, and the second end of the third connecting rod is rotatably disposed in the second mounting bracket;

[0046] The front wall of the sliding rod is provided with an operating handle for holding and applying force;

[0047] The sliding rod is limited by a limiting component;

[0048] The sliding rod drives the lifting mechanism to work by sliding.

[0049] Furthermore, the limiting component is a limiting pin;

[0050] The top wall of the sliding rod is provided with first limiting holes on both sides, and the two limiting pins slide through the two first limiting holes and are detachably connected to the lifting mechanism.

[0051] Furthermore, the lifting mechanism includes a connecting block, a T-shaped rod, a second roller, an inclined plate, and a wheel axle;

[0052] An inclined plate is fixedly provided between the two vertical plates of the n-shaped base, and the high-end surface of the inclined plate is fixedly connected to the front wall of the horizontal plate of the n-shaped base.

[0053] The inclined plate has two second limiting holes on each side of its slope surface that cooperate with the first limiting hole.

[0054] The limiting pin is detachably connected to one of the second limiting holes located on the same side;

[0055] The inner walls of the two vertical plates of the n-shaped base are respectively provided with a third rectangular through groove, and the two third rectangular through grooves are respectively located below the two T-shaped sliding grooves;

[0056] Two rectangular slide blocks are slidably arranged in the two rectangular through slots respectively, and connecting blocks are fixed on the inner sidewalls of the two rectangular slide blocks respectively. Two limiting pins are slidably connected to the two connecting blocks respectively, and the two connecting blocks are located below the sliding rod.

[0057] A crossbar with the same T-shaped rod is rotatably provided between the two connecting blocks. A roller frame is provided at the lower end of the vertical bar of the T-shaped rod. A second roller is rotatably provided inside the roller frame. The second roller rolls on the inclined surface of the inclined plate.

[0058] The front end of the roller frame is rotatably provided with an axle, and the two first rollers are respectively fixed at both ends of the axle;

[0059] The lower ends of the two vertical plates of the n-shaped base are respectively provided with arc-shaped through grooves for the axle to pass through, and the two ends of the axle are respectively in detachable contact with the two arc-shaped grooves.

[0060] Furthermore, the second dustproof plate is provided with an extension plate on the side wall away from the second rack plate for splicing two adjacent splicable guardrail assemblies. The extension plate is movably disposed on one side of the second dustproof plate of the adjacent splicable guardrail assembly.

[0061] Advantages of this invention:

[0062] The first and second unfolding mechanisms of this invention can expand the protective area when using the equipment and retract to reduce the area when storing the equipment, thus reducing transportation difficulty. The lifting mechanism of this invention is used to raise or lower the first rollers on both sides of the equipment for convenient transportation. The third unfolding mechanism of this invention can store or unfold the two isolation plates. When the equipment is not in use, storing them can cover the front of the dustproof plate, preventing dust accumulation due to long-term static placement. The cleaning mechanism of this invention can clean the dustproof plate once when the equipment is unfolded or stored. The fixing mechanism of this invention can automatically fix the equipment during use, avoiding manual fixing. This invention is composed of several splicable components, each of which contains an unfoldable dustproof plate, which greatly reduces the splicing difficulty and number of splicing times compared to dustproof plates that are fixed by transmission.

[0063] In addition to the objectives, features and advantages described above, the present invention has other objectives, features and advantages, which will be further described in detail below with reference to the figures. Attached Figure Description

[0064] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0065] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0066] Figure 2 This is a schematic diagram of the overall structure during the unfolding process of the present invention;

[0067] Figure 3This is a schematic diagram of the overall structure of the fixing mechanism of the present invention;

[0068] Figure 4 This is a schematic diagram illustrating the working principle of the fixing mechanism of the present invention;

[0069] Figure 5 This is a schematic diagram showing the operation of the third unfolding mechanism of the present invention.

[0070] Figure 6 This is a schematic diagram illustrating the working principle of the cleaning mechanism of the present invention;

[0071] Figure 7 This is a schematic diagram illustrating the lifting principle of the lifting mechanism of the present invention;

[0072] Figure 8 This is a schematic diagram of the installation of the n-shaped base and the U-shaped mounting plate of the present invention;

[0073] Figure 9 This is a schematic diagram illustrating the working principle of the first unfolding mechanism of the present invention;

[0074] Figure 10 This is a schematic diagram showing the state of the invention when it is unfolded;

[0075] Figure 11 This is a schematic diagram showing the effect of the spliced ​​parts of the present invention;

[0076] Figure 12 This is a front view of the overall structure of the present invention after assembly;

[0077] Figure 13 This is a top sectional view of the assembled parts of the present invention.

[0078] Figure label:

[0079] 1 is an n-shaped base, 2 is a sliding rod, 3 is an operating handle, 4 is a T-shaped rod, 5 is a connecting block, 6 is a wheel axle, 7 is the first roller, 8 is the third connecting rod, 9 is a roller brush, 10 is the third rack plate, 11 is the fourth spur gear, 12 is the first rack plate, 13 is the first spur gear, 14 is the first dustproof plate, 15 is the second dustproof plate, 16 is a horizontal mounting plate, 17 is a limiting pin, 18 is the second connecting rod, 19 is a U-shaped mounting plate, 20 is the third spur gear, 21 is the second spur gear, 22 is the second rack plate, 23 is an isolation plate, 24 is the first connecting rod, 25 is an I-shaped slider, 26 is a threaded rod, 27 is a worm gear, 28 is a worm wheel, 29 is an n-shaped locking block, 30 is a T-shaped slider, 31 is the second roller, and 32 is an inclined plate;

[0080] 101 is the first rectangular groove, 102 is the T-shaped groove, 103 is the third rectangular through groove, and 104 is the arc-shaped groove;

[0081] 201 is the first mounting bracket;

[0082] 401 is a roller frame;

[0083] 501 is the third rectangular slider;

[0084] 1401 is the first rectangular slider;

[0085] 1501 is the second rectangular slider, 1502 is the second mounting bracket, and 1503 is the expansion plate;

[0086] 1601 is the third dustproof plate, 1602 is the second rectangular slide groove, and 1603 is the T-shaped slide rail;

[0087] 1901 is the first card slot, and 1902 is the second card slot;

[0088] 2801 is the main axis;

[0089] 2901 is a grounding component. Detailed Implementation

[0090] To make the objectives, technical solutions, and advantages of the invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention.

[0091] In the description of the invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0092] refer to Figures 1 to 13 A dustproof guardrail for building construction includes several modular guardrail components. The modular guardrail components include an n-shaped base 1, a U-shaped mounting plate 19, a first dustproof plate 14, a second dustproof plate 15, a third dustproof plate 1601, an isolation plate 23, a first roller 7, a first unfolding mechanism, a second unfolding mechanism, a lifting mechanism, a third unfolding mechanism, a fixing mechanism, and a cleaning mechanism.

[0093] A third dustproof plate 1601 is vertically installed on the upper end of the horizontal side wall of the n-type base 1. A second dustproof plate 15 is movably installed on the front wall of the third dustproof plate 1601. The second dustproof plate 15 is driven to move by the first unfolding mechanism. The n-type base 1 is the supporting component of a single guardrail assembly in this device. The surfaces of the third dustproof plate 1601, the second dustproof plate 15 and the first dustproof plate 14 (described later) have special geometric structures for dust prevention. This is prior art and will not be described in detail here.

[0094] First dustproof plates 14 are slidably installed on both sides of the front wall of the second dustproof plate 15. Both first dustproof plates 14 are driven to slide by the second unfolding mechanism. The second unfolding mechanism is driven by the first unfolding mechanism. The two first dustproof plates 14 can be unfolded laterally under the drive of the second unfolding mechanism to expand the coverage of the lateral space. Under the drive of the second unfolding mechanism, they can be automatically folded into the smallest area to reduce the footprint and facilitate transportation.

[0095] The upper ends of the two vertical plates of the n-shaped base 1 are respectively equipped with cleaning mechanisms for cleaning the dust screen. The two first dust screens 14 drive the two cleaning mechanisms to work by sliding. The two first dust screens 14 can drive the two cleaning mechanisms to clean their surfaces by sliding.

[0096] Two first rollers 7 are movably installed on the outer sides of the two vertical plates of the n-shaped base 1. Both first rollers 7 are driven to rise and fall by a lifting mechanism. The lifting mechanism is driven by the first unfolding mechanism. When the first rollers 7 are lowered by the lifting mechanism, they can be used to assist the user in transporting the equipment. When they are raised, they can increase the stability of the equipment.

[0097] The rear walls of the third dustproof plate 1601 are movably equipped with isolation plates 23 on both sides. Both isolation plates 23 are driven to move by the third unfolding mechanism. The isolation plates 23 can be unfolded or retracted under the drive of the third unfolding mechanism. When they are unfolded, they can splice two adjacent guardrail components together. When they are retracted, they can cover the third dustproof plate 1601 to prevent dust accumulation during the static process.

[0098] One of the first dustproof plates 14 operates by sliding and driving the third unfolding mechanism;

[0099] A U-shaped mounting plate 19 is installed on the rear wall of the horizontal plate of the n-type base 1. The U-shaped mounting plate 19 is located on the rear side of the third dustproof plate 1601. The horizontal plate of the U-shaped mounting plate 19 is fixedly connected to the lower side of the rear wall of the horizontal plate of the n-type base 1. The U-shaped mounting plate 19 is used to install the fixing mechanism described later, and also provides a connection platform for two adjacent guardrail components.

[0100] The two vertical plates of the U-shaped mounting plate 19 have a first gap between them and the horizontal plate of the n-shaped base 1. The two isolation plates 23 are detachably in contact within the two first gaps. The function of the first gap is to prevent the two isolation plates 23 from interfering with the U-shaped mounting plate 19 when they are unfolded.

[0101] The two first gaps are respectively provided with a first slot 1901 and a second slot 1902 for splicing the isolation plate 23. The two first slots 1901 are respectively provided on the two vertical plate side walls of the U-shaped mounting plate 19, and the two second slots 1902 are respectively provided on the two vertical plate side walls of the n-shaped base 1.

[0102] The partition plates 23 of two adjacent modular guardrail components are detachably installed in the first slot 1901 or the second slot 1902 of the two adjacent modular guardrail components. When the two partition plates 23 on one guardrail component are unfolded, they will be locked into the second slot 1902 on the two adjacent guardrail components respectively, while the adjacent partition plates 23 on the two adjacent guardrail components will be locked into the first slot 1901 on them. Through this splicing method, the stability of the force after locking can be guaranteed.

[0103] The upper end of the horizontal plate of the U-shaped mounting plate 19 is equipped with a fixing mechanism for fixing the equipment. The fixing mechanism is driven by the third unfolding mechanism. The fixing mechanism is used to fix the equipment to the ground, which increases the overall stability of the equipment and prevents the equipment from being blown over in strong winds.

[0104] The fixing mechanism includes an n-type locking block 29, a ground insertion component 2901, a first rack plate 12, a first spur gear 13, and a main shaft 2801;

[0105] The outer walls of the two vertical plates of the U-shaped mounting plate 19 are respectively mounted with a first spur gear 13 via a first rotating shaft. The other ends of the two first rotating shafts respectively rotatably pass through the two vertical plates of the U-shaped mounting plate 19 and are fixedly connected by a main shaft 2801.

[0106] The first rack plates 12 are respectively meshed on one side of the two first spur gears 13;

[0107] On the rear walls of the two vertical plates of the U-shaped mounting plate 19, n-shaped locking blocks 29 are slidably engaged. The two n-shaped locking blocks 29 are located on the outer side of the two vertical plates of the U-shaped mounting plate 19 and are fixedly connected to the middle ends of the two first toothed plates 12.

[0108] Two n-type card blocks 29 have grounding parts 2901 installed at the lower ends of their horizontal plates;

[0109] The main shaft 2801 is driven to rotate by the third unfolding mechanism. When the equipment is in use, the main shaft 2801 starts to rotate under the drive of the third unfolding mechanism and transmits the rotation driving force to the first spur gear 13 fixedly installed at both ends. The first spur gear 13 on both sides drives the first rack plate 12 meshing with it to start to move downward. During the downward movement of the first rack plate 12, it drives the n-shaped locking blocks 29 on both sides to slide downward. During the downward sliding of the n-shaped locking blocks 29 on both sides, it drives the ground insertion parts 2901 fixedly installed with it to slide downward. The part of the two ground insertion parts 2901 that contacts the ground is a shovel-shaped structure that facilitates entry into the ground.

[0110] The third unfolding mechanism includes a worm gear 28, a worm 27, a threaded rod 26, an I-shaped slider 25, a first connecting rod 24, a second spur gear 21, a third spur gear 20, and a second rack plate 22;

[0111] A worm gear 28 is installed on the middle end fixed sleeve of the main shaft 2801, and a worm 27 is meshed on one side of the worm gear 28.

[0112] The lower end of the worm 27 is rotatably connected to the upper end of the horizontal plate of the U-shaped mounting plate 19, and the first end of the threaded rod 26 is fixedly installed on the upper end of the worm 27.

[0113] A horizontal mounting plate 16 is vertically installed on the upper rear wall of the third dustproof plate 1601. The second end of the threaded rod 26 rotatably passes through the horizontal mounting plate 16 and is fixedly installed with a second spur gear 21. The second spur gear 21 is rotatably mounted on the upper end of the horizontal mounting plate 16 through a thrust bearing. A third spur gear 20 is meshed on one side of the second spur gear 21. The third spur gear 20 is rotatably mounted on the upper end of the horizontal mounting plate 16 through a second rotating shaft.

[0114] The diameter of the third spur gear 20 is larger than the diameter of the second spur gear 21;

[0115] The front side of the third spur gear 20 is fitted with a second rack plate 22, and the outer end of the second rack plate 22 is fixedly connected to the upper end of the rear wall of the first dustproof plate 14 near the third spur gear 20 through a connecting post.

[0116] A second gap is left between the second rack plate 22 and the first dustproof plate 14 fixedly connected thereto, and the second dustproof plate 15 is movably disposed within the second gap.

[0117] A T-shaped slide rail 1603 is installed on the rear wall of the third dustproof plate 1601. The first horizontal plate of the I-shaped slider 25 is slidably installed inside the T-shaped slide rail 1603. The second horizontal plate of the I-shaped slider 25 is threadedly connected to the threaded rod 26.

[0118] The first ends of the first connecting rods 24 are rotatably installed on both sides of the rear wall of the second horizontal plate of the I-shaped slider 25, and the second ends of the two first connecting rods 24 are rotatably connected to the middle ends of the rear walls of the two adjacent isolation plates 23.

[0119] The lower ends of the two isolation plates 23 are respectively rotatably mounted on both sides of the lower end of the T-shaped slide rail 1603;

[0120] The second horizontal plate of the I-shaped slider 25 has a third gap between its two sides and the T-shaped slide rail 1603. The two isolation plates 23 are detachably in contact within the two third gaps. The second rack plate 22 slides along the upper end of the horizontal mounting plate 16 under the action of one of the first dustproof plates 14. During the sliding process, the second rack plate 22 drives the third spur gear 20 that meshes with it. During the rotation of the third spur gear 20, it drives the second spur gear 21 that meshes with it. The diameter of the third spur gear 20 is larger than that of the second spur gear 21, so the second spur gear 21 starts to rotate at a faster speed and transmits the rotational driving force to the threaded rod 26 that is fixedly connected to it. Since the second spur gear 21 is mounted on the upper end of the horizontal mounting plate 16 through a thrust bearing, the second spur gear 21 will not move up and down during the rotation. During the rotation of the threaded rod 26, the I-shaped slider 25 starts to slide up and down. The cooperation between the I-shaped slider 25 and the T-shaped slide rail 1603 ensures that the I-shaped slider 25 will not be rotated by the threaded rod 26 during the sliding process. As the I-shaped slider 25 slides up and down, it causes the first connecting rods 24 on both sides to deflect up and down. When the I-shaped slider 25 slides upward, the first connecting rods 24 on both sides begin to retract, and in the process of retraction, they pull the isolation plates 23 on both sides to rotate upward and block the rear side of the third dustproof plate 1601 to prevent dust accumulation. When the I-shaped slider 25 slides downward, the first connecting rods 24 on both sides begin to separate, and in the process of separation, they push the isolation plates 23 on both sides to rotate downward and to a horizontal state. The two horizontal isolation plates 23 are now precisely engaged within the two first gaps. If splicing is required, the portion of the isolation plate 23 located outside the two first gaps is now precisely engaged within the second slots 1902 of the two adjacent guardrail components. Since the threaded rod 26 is fixedly connected to the worm gear 27, the threaded rod 26 will drive the worm gear 27 to rotate synchronously during rotation. The worm gear 27 will drive the worm wheel 28 meshing with it to start rotating during rotation. The worm wheel 28 will transmit the rotational driving force to the main shaft 2801 through rotation.

[0121] The second unfolding mechanism includes a second connecting rod 18, a first rectangular slider 1401, and a first rectangular slide groove 101;

[0122] The upper sides of the horizontal plate sidewall of the n-type base 1 are provided with first rectangular slide grooves 101. The two first rectangular slide grooves 101 are both located on the front side of the third dustproof plate 1601. The lower ends of the two first dustproof plates 14 are respectively equipped with first rectangular sliders 1401 that cooperate with the first rectangular slide grooves 101. The two first rectangular sliders 1401 slide and connect in the two first rectangular slide grooves 101 respectively.

[0123] The upper front walls of the two adjacent first dustproof plates 14 are respectively rotatably equipped with the first ends of the second connecting rods 18. The second ends of the two second connecting rods 18 are respectively rotatably connected to the upper front walls of the second dustproof plate 15. When the second dustproof plate 15 slides up and down under the drive of the first unfolding mechanism, it will drive the second connecting rods 18 on both sides during the sliding process. When the second dustproof plate 15 slides upward, the second connecting rods 18 on both sides begin to deflect downward. During the downward deflection, the second connecting rods 18 on both sides drive the first dustproof plates 14 on both sides to slide and unfold to both sides. When the second dustproof plate 15 slides downward, the second connecting rods 18 on both sides begin to deflect upward, and during the deflection, they pull the first dustproof plates 14 on both sides to gradually retract. The cooperation between the first rectangular slide groove 101 and the first rectangular slider 1401 ensures the sliding trajectory of the two first dustproof plates 14 and prevents deviation during the sliding process.

[0124] The cleaning mechanism includes a fourth spur gear 11, a third rack plate 10, and a barrel brush 9;

[0125] The lower front wall of the two first dustproof plates 14 is respectively equipped with a third rack plate 10, and a fourth spur gear 11 is respectively meshed on one side of the two third rack plates 10. The two fourth spur gears 11 are respectively rotatably mounted on the upper ends of the two vertical plates of the n-shaped base 1 through the third rotating shaft.

[0126] Two roller brushes 9 are fixedly installed on the upper ends of the two third rotating shafts. The two roller brushes 9 are detachably in contact with the front walls of the two first dustproof plates 14. During the sliding process of the two first dustproof plates 14 opening and closing, the two third rack plates 10 at their lower ends are driven to slide back and forth. During the back and forth sliding process, the two third rack plates 10 drive the fourth spur gears 11 on both sides to rotate back and forth. The two fourth spur gears 11 drive the third rotating shaft to rotate. The third rotating shaft transmits the rotation driving force to the roller brushes 9 fixedly connected to it, so that the roller brushes 9 have the ability to rotate. The roller brushes 9 clean the front walls of the two first dustproof plates 14 by rotating.

[0127] The first unfolding mechanism includes a second rectangular slider 1501, a second rectangular slide groove 1602, a sliding rod 2, an operating handle 3, a T-shaped slider 30, a T-shaped slide groove 102, and a third connecting rod 8;

[0128] T-shaped grooves 102 are provided on the inner walls of the two vertical plates of the n-shaped base 1, and the horizontal plates of the T-shaped sliders 30 are slidably installed in the two T-shaped grooves 102 respectively.

[0129] The two T-shaped sliders 30 are fixedly connected at their outer ends by a sliding rod 2;

[0130] A first mounting bracket 201 is installed at the middle of the upper end of the sliding rod 2, and the first end of the third connecting rod 8 is rotatably installed inside the first mounting bracket 201;

[0131] A second mounting bracket 1502 is installed at the lower middle part of the front wall of the second dustproof plate 15, and the second end of the third connecting rod 8 is rotatably located in the second mounting bracket 1502.

[0132] An operating handle 3 for gripping and applying force is installed on the front wall of the sliding rod 2;

[0133] The sliding rod 2 is limited by a limiting component;

[0134] The sliding rod 2 operates by sliding and driving the lifting mechanism. The user pushes and pulls the handle 3 to apply a sliding force to the sliding rod 2. The sliding rod 2 drives the third link 8 to start deflecting up and down. The T-shaped sliders 30 on both sides of the sliding rod 8 cooperate with the two T-shaped slide grooves 102 to ensure the sliding trajectory of the sliding rod 2 and to ensure that it will not fall off during the sliding process. During the up and down deflection process, the third link 8 drives the second dustproof plate 15 to start sliding up and down.

[0135] The limiting component is a limiting pin 17;

[0136] The top wall of the sliding rod 2 is provided with first limiting holes on both sides. Two limiting pins 17 slide through the two first limiting holes and are detachably connected to the lifting mechanism. By inserting the limiting pins 17 into different second limiting holes (described later), the two sliding limit points of the sliding rod 2 can be determined. The two sliding limit points correspond to the limit position when the second dustproof plate 15 is unfolded and the limit position when the second dustproof plate is retracted.

[0137] The lifting mechanism includes a connecting block 5, a T-shaped rod 4, a second roller 31, an inclined plate 32, and a wheel axle 6;

[0138] An inclined plate 32 is fixedly installed between the two vertical plates of the n-type base 1, and the high-end surface of the inclined plate 32 is fixedly connected to the front wall of the horizontal plate of the n-type base 1.

[0139] Two second limiting holes that cooperate with the first limiting hole are respectively provided on both sides of the inclined plate 32.

[0140] The limiting pin 17 is detachably connected to one of the second limiting holes located on the same side;

[0141] The inner walls of the two vertical plates of the n-shaped base 1 are respectively provided with a third rectangular through groove 103, and the two third rectangular through grooves 103 are respectively located below the two T-shaped sliding grooves 102;

[0142] Two third rectangular through slots 103 are respectively slidably installed with third rectangular sliders 501. Connecting blocks 5 are respectively fixedly installed on the inner sidewalls of the two third rectangular sliders 501. Two limiting pins 17 are respectively slidably connected to the two connecting blocks 5. The two connecting blocks 5 are both located below the sliding rod 2.

[0143] A crossbar of the same T-shaped rod 4 is rotatably installed between the two connecting blocks 5. A roller frame 401 is installed at the lower end of the vertical rod of the T-shaped rod 4. A second roller 31 is rotatably installed inside the roller frame 401. The second roller 31 rolls on the inclined surface of the inclined plate 32.

[0144] The front end of the roller frame 401 is rotatably mounted with an axle 6, and two first rollers 7 are fixed at both ends of the axle 6 respectively;

[0145] The lower ends of the two vertical plates of the n-shaped base 1 are respectively provided with arc-shaped through grooves 104 for the passage of the wheel axle 6. The two ends of the wheel axle 6 are detachably in contact with the two arc-shaped grooves 104 respectively. (Refer to...) Figure 7 As the sliding rod 2 slides to the right, the distance between the bottom end of the sliding rod 2 and the inclined surface of the inclined plate 32 becomes shorter and shorter. At the same time, the distance between the connecting blocks 5 on both sides and the inclined surface of the inclined plate 32 also becomes shorter and shorter. Since the T-shaped plate is rotatably connected to the connecting blocks 5 on both sides, and the second roller 31 on the lower side of the vertical plate of the T-shaped plate 4 always rolls upwards along the inclined surface of the inclined plate 32, the vertical plate of the T-shaped plate 4 can begin to tilt upwards. During the upward tilting process, the T-shaped plate 4 also slides to the right along with the two connecting blocks 5. Therefore, the axle 6 at the end of the vertical rod of the T-shaped plate 4 will have a certain direction... The arc-shaped movement trajectory of the wheel axle 6 coincides with the arc-shaped through groove 104, allowing the wheel axle 6 to slide upward along the arc-shaped through groove 104. The limiting pins can fix the wheel axle 6 in the arc-shaped through groove 104, and the first rollers 7 on both sides of the wheel axle 6 can also be fixed on both sides of the arc-shaped through groove 104 along with the wheel axle 6, and will not fall off. When the T-shaped plate 4 slides to the left, the wheel axle 6 will slide downward along the arc-shaped through groove 104 and drive the first rollers 7 to descend and support the equipment, thereby realizing the function of convenient transportation.

[0146] An extension plate 1503 for splicing two adjacent combinable guardrail assemblies is installed on the side wall of the second dustproof plate 15 away from the second rack plate 22. Its purpose is to avoid interference between the extension plate and the second rack plate 22 during splicing. The extension plate 1503 is movably disposed on one side of the second dustproof plate 15 of the adjacent combinable guardrail assembly. Its function is to compensate for the gap between the second dustproof plates 15 in the two adjacent guardrail assemblies when they are unfolded, thereby increasing the longitudinal protection area.

[0147] Implementation method of the present invention:

[0148] Prepare several guardrail components and arrange them in sequence at the edge of the area to be constructed. Temporarily pull out the limit pin 17 and push the handle 3 forward. The second dustproof plate 15 will then begin to slide upward. When the second dustproof plate 15 slides to the highest limit point, insert the limit pin into the second limit hole below to fix it.

[0149] As the second dustproof plate 15 slides upward, the first dustproof plates 14 on both sides slide and unfold to the sides. At the same time, the isolation plates 23 located on both sides of the first dustproof plate 1601 also rotate and unfold outward and lock into the first gap on both sides. At this time, the first dustproof plate 14 is also fully exposed.

[0150] The ground insertion parts located on both sides of the U-shaped mounting plate 19 are also lowered and inserted into the ground. Since the first rollers 7 on both sides of the equipment have risen up and are not in contact with the ground under the drive of the lifting mechanism, the ground insertion parts 2901 can be smoothly inserted into the ground.

[0151] The equipment can be unfolded by repeating the above operation on several guardrail components. When the two isolation plates 23 of one guardrail component are unfolded and snapped into the first gap on both sides, the adjacent isolation plates 23 on the guardrail components on both sides will snap into the second slots 1902 on both sides respectively. The two isolation plates 23 on itself that are snapped into the outside of the first gap will snap into the first gaps 1901 on the guardrail components on both sides respectively. The stability of the splicing can be achieved by the above splicing method, that is, the isolation plates are staggered and snapped together. After all the isolation plates 23 are snapped and spliced, the extension plate on one side of the second dustproof plate 15 extends out as the second dustproof plate 15 extends upward and blocks the gap between the second dustproof plates 15 on the two adjacent guardrail components, thereby expanding the longitudinal protection area of ​​the equipment.

[0152] A water tank can also be installed on the upper end of the horizontal mounting plate 16. Connect the water tank to the nozzle and aim the nozzle at the dustproof plate. When the equipment is unfolded, water spraying can be carried out around the dustproof plate by opening the nozzle, thereby reducing the density of the surrounding dust.

[0153] When the equipment needs to be dismantled, the limit pin is pulled out. At this time, the second roller 31 will roll down the slope of the ramp 32. The vertical bar of the T-shaped rod 4 tilts downward as the second roller 31 rolls, sending the wheel axle 6 downward. The first rollers 7 located at both ends of the wheel axle 6 then descend and contact the ground. At the same time, the sliding rod 2 will slide backward as the T-shaped rod 4 tilts downward. When the sliding rod 2 slides backward to its limit position, the limit pin 17 is inserted into the second limit hole again. This process... The second dustproof plate 15 will descend, while the first dustproof plates 14 on both sides slide inward and retract. The ground inserts 2901 on both sides are pulled upward from the ground. The isolation plates 23 on both sides of the first dustproof plate 1601 also rotate upward until they block the side wall of the first dustproof plate 1601. The two adjacent guardrail components lose their connection as the isolation plates 23 are detached. At this time, the above operation can be repeated on several guardrail components to complete the storage work. With the cooperation of the first roller 7, the equipment can be pushed to the storage point.

[0154] The first and second unfolding mechanisms of this invention can expand the protective area when using the equipment and retract to reduce the area when storing the equipment, thus reducing transportation difficulty. The lifting mechanism of this invention is used to raise or lower the first rollers on both sides of the equipment for convenient transportation. The third unfolding mechanism of this invention can store or unfold the two isolation plates. When the equipment is not in use, storing them can cover the front of the dustproof plate, preventing dust accumulation due to long-term static placement. The cleaning mechanism of this invention can clean the dustproof plate once when the equipment is unfolded or stored. The fixing mechanism of this invention can automatically fix the equipment during use, avoiding manual fixing. This invention is composed of several splicable components, each of which contains an unfoldable dustproof plate, which greatly reduces the splicing difficulty and number of splicing times compared to dustproof plates that are fixed by transmission.

[0155] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dustproof guardrail for building construction, characterized in that: It includes several modular guardrail components, which include an n-shaped base (1), a U-shaped mounting plate (19), a first dustproof plate (14), a second dustproof plate (15), a third dustproof plate (1601), an isolation plate (23), a first roller (7), a first unfolding mechanism, a second unfolding mechanism, a lifting mechanism, a third unfolding mechanism, a fixing mechanism, and a cleaning mechanism; The upper end of the horizontal sidewall of the n-shaped base (1) is provided with a third dustproof plate (1601), and the front wall of the third dustproof plate (1601) is provided with a second dustproof plate (15), which is driven to move by the first unfolding mechanism. The front walls of the second dustproof plate (15) are respectively provided with first dustproof plates (14), and both first dustproof plates (14) are driven to slide by the second unfolding mechanism. The second unfolding mechanism is driven to work by the first unfolding mechanism. The upper ends of the two vertical plates of the n-shaped base (1) are respectively provided with cleaning mechanisms for cleaning the dustproof net, and the two first dustproof plates (14) are respectively driven by sliding to operate the two cleaning mechanisms; The two vertical plates of the n-shaped base (1) are respectively provided with first rollers (7), and the two first rollers (7) are driven to rise and fall by a lifting mechanism. The lifting mechanism is driven to work by the first unfolding mechanism. The rear wall of the third dustproof plate (1601) is provided with isolation plates (23) on both sides, and both isolation plates (23) are driven to move by the third unfolding mechanism. One of the first dustproof panels (14) operates by sliding to drive the third unfolding mechanism; The rear wall of the horizontal plate of the n-type base (1) is provided with a U-shaped mounting plate (19), which is located on the rear side of the third dustproof plate (1601). The horizontal plate of the U-shaped mounting plate (19) is fixedly connected to the lower side of the rear wall of the horizontal plate of the n-type base (1). The two vertical plates of the U-shaped mounting plate (19) are respectively separated from the horizontal plate of the n-shaped base (1), and the two isolation plates (23) are respectively detachably contacted within the two first gaps; The two first gaps are respectively provided with a first slot (1901) and a second slot (1902) for splicing the isolation plate (23). The two first slots (1901) are respectively provided on the two vertical plate side walls of the U-shaped mounting plate (19), and the two second slots (1902) are respectively provided on the two vertical plate side walls of the n-shaped base (1). The partition plates (23) of two adjacent modular guardrail assemblies are respectively detachably disposed in the first slot (1901) or the second slot (1902) of the two adjacent modular guardrail assemblies; The upper end of the horizontal plate of the U-shaped mounting plate (19) is provided with a fixing mechanism for fixing the equipment, and the fixing mechanism is driven by the third unfolding mechanism.

2. The dustproof guardrail for building construction as described in claim 1, characterized in that: The fixing mechanism includes an n-type locking block (29), a ground insertion component (2901), a first rack plate (12), a first spur gear (13), and a main shaft (2801). The outer walls of the two vertical plates of the U-shaped mounting plate (19) are respectively provided with a first straight gear (13) through a first rotating shaft. The other ends of the two first rotating shafts respectively rotate through the two vertical plates of the U-shaped mounting plate (19) and are fixedly connected by a main shaft (2801). The first rack plate (12) is respectively meshed on one side of the two first spur gears (13); The two vertical plates of the U-shaped mounting plate (19) are respectively slidably engaged with n-shaped locking blocks (29), and the two n-shaped locking blocks (29) are located on the outer side of the two vertical plates of the U-shaped mounting plate (19) and are respectively fixedly connected to the middle ends of the two first toothed plates (12). The two n-type card blocks (29) are respectively provided with ground inserts (2901) at the lower ends of their horizontal plates. The main shaft (2801) is driven to rotate by the third unfolding mechanism.

3. The dustproof guardrail for building construction as described in claim 2, characterized in that: The third unfolding mechanism includes a worm gear (28), a worm (27), a threaded rod (26), an I-shaped slider (25), a first connecting rod (24), a second spur gear (21), a third spur gear (20), and a second rack plate (22). A worm gear (28) is fixedly sleeved at the middle end of the main shaft (2801), and a worm (27) is meshed on one side of the worm gear (28). The lower end of the worm (27) is rotatably connected to the upper end of the horizontal plate of the U-shaped mounting plate (19), and the upper end of the worm (27) is fixedly provided with the first end of the threaded rod (26); A horizontal mounting plate (16) is vertically provided on the upper rear wall of the third dustproof plate (1601). The second end of the threaded rod (26) is rotatably connected through the horizontal mounting plate (16) and fixed with a second spur gear (21). The second spur gear (21) is rotatably provided on the upper end of the horizontal mounting plate (16) through a thrust bearing. A third spur gear (20) is meshed on one side of the second spur gear (21). The third spur gear (20) is rotatably provided on the upper end of the horizontal mounting plate (16) through a second rotating shaft. The diameter of the third spur gear (20) is larger than the diameter of the second spur gear (21); The front side of the third spur gear (20) is provided with a second rack plate (22), and the outer end of the second rack plate (22) is fixedly connected to the upper end of the rear wall of the first dustproof plate (14) near the third spur gear (20) through a connecting column; A second gap is left between the second rack plate (22) and the first dustproof plate (14) fixedly connected thereto, and the second dustproof plate (15) is movably disposed within the second gap; The rear wall of the third dustproof plate (1601) is provided with a T-shaped slide rail (1603), and the first horizontal plate of the I-shaped slider (25) is slidably provided in the T-shaped slide rail (1603). The second horizontal plate of the I-shaped slider (25) is threadedly connected to the threaded rod (26). The first ends of the first connecting rods (24) are rotatably provided on both sides of the rear wall of the second horizontal plate of the I-shaped slider (25), and the second ends of the two first connecting rods (24) are rotatably connected to the middle ends of the rear walls of the two adjacent isolation plates (23); The lower ends of the two isolation plates (23) are respectively rotatably disposed on both sides of the lower end of the T-shaped slide rail (1603); The second horizontal plate of the I-shaped slider (25) has a third gap between its two sides and the T-shaped slide rail (1603), and the two isolation plates (23) are detachably in contact within the two third gaps.

4. The dustproof guardrail for building construction as described in claim 3, characterized in that: The second unfolding mechanism includes a second link (18), a first rectangular slider (1401), and a first rectangular groove (101). The upper sides of the horizontal plate sidewall of the n-shaped base (1) are provided with first rectangular slide grooves (101), and the two first rectangular slide grooves (101) are provided on the front side of the third dustproof plate (1601). The lower ends of the two first dustproof plates (14) are provided with first rectangular sliders (1401) that cooperate with the first rectangular slide grooves (101). The two first rectangular sliders (1401) are slidably connected in the two first rectangular slide grooves (101). The upper ends of the front walls of the two first dustproof plates (14) that are close to each other are respectively provided with the first ends of the second connecting rods (18), and the second ends of the two second connecting rods (18) are respectively rotatably connected to the two sides of the upper ends of the front walls of the second dustproof plate (15).

5. The dustproof guardrail for building construction as described in claim 4, characterized in that: The cleaning mechanism includes a fourth spur gear (11), a third rack plate (10), and a roller brush (9). The lower front wall of each of the two first dustproof plates (14) is provided with a third rack plate (10), and a fourth spur gear (11) is meshed on one side of each of the two third rack plates (10). The two fourth spur gears (11) are respectively rotatably mounted on the upper ends of the two vertical plates of the n-shaped base (1) through a third rotating shaft. The upper ends of the two third rotating shafts are respectively fixed with roller brushes (9), and the two roller brushes (9) are detachably in contact with the front walls of the two first dustproof plates (14).

6. The dustproof guardrail for building construction as described in claim 1, characterized in that: The first unfolding mechanism includes a second rectangular slider (1501), a second rectangular slide groove (1602), a sliding rod (2), an operating handle (3), a T-shaped slider (30), a T-shaped slide groove (102), and a third connecting rod (8). The inner walls of the two vertical plates of the n-shaped base (1) are respectively provided with T-shaped sliding grooves (102), and the horizontal plates of the T-shaped sliders (30) are respectively slidably arranged in the two T-shaped sliding grooves (102); The two T-shaped sliders (30) are fixedly connected at their outer ends by a sliding rod (2); The upper middle part of the sliding rod (2) is provided with a first mounting bracket (201), and the first end of the third connecting rod (8) is rotatably provided inside the first mounting bracket (201); The second dustproof plate (15) has a second mounting bracket (1502) at the lower middle part of the front wall, and the second end of the third connecting rod (8) is rotatably located in the second mounting bracket (1502); The front wall of the sliding rod (2) is provided with an operating handle (3) for holding and applying force. The sliding rod (2) is limited by a limiting component; The sliding rod (2) drives the lifting mechanism to work by sliding.

7. The dustproof guardrail for building construction as described in claim 6, characterized in that: The limiting component is a limiting pin (17). The top wall of the sliding rod (2) is provided with first limiting holes on both sides, and the two limiting pins (17) slide through the two first limiting holes and are detachably connected to the lifting mechanism.

8. The dustproof guardrail for building construction as described in claim 7, characterized in that: The lifting mechanism includes a connecting block (5), a T-shaped rod (4), a second roller (31), an inclined plate (32), and a wheel axle (6); An inclined plate (32) is fixedly provided between the two vertical plates of the n-shaped base (1), and the high end surface of the inclined plate (32) is fixedly connected to the front wall of the horizontal plate of the n-shaped base (1). The inclined plate (32) has two second limiting holes on each side of its slope surface that cooperate with the first limiting hole; The limiting pin (17) is detachably connected to one of the second limiting holes located on the same side; The inner walls of the two vertical plates of the n-shaped base (1) are respectively provided with third rectangular through grooves (103), and the two third rectangular through grooves (103) are respectively located below the two T-shaped sliding grooves (102); The two third rectangular through slots (103) are respectively provided with third rectangular sliders (501), and the inner sidewalls of the two third rectangular sliders (501) are respectively fixed with connecting blocks (5). The two limiting pins (17) are respectively slidably connected to the two connecting blocks (5). The two connecting blocks (5) are both located below the sliding rod (2). The two connecting blocks (5) are rotatably provided with the same T-shaped rod (4) with a horizontal bar. The lower end of the vertical rod of the T-shaped rod (4) is provided with a roller frame (401). A second roller (31) is rotatably provided in the roller frame (401). The second roller (31) rolls on the inclined surface of the inclined plate (32). The front end of the roller frame (401) is rotatably provided with a wheel axle (6), and the two first rollers (7) are respectively fixed at both ends of the wheel axle (6); The lower ends of the two vertical plates of the n-shaped base (1) are respectively provided with arc-shaped through grooves (104) for the axle (6) to pass through, and the two ends of the axle (6) are respectively detachably in contact with the two arc-shaped through grooves (104).

9. The dustproof guardrail for building construction as described in claim 3, characterized in that; The second dustproof plate (15) is provided with an extension plate (1503) on the side wall away from the second rack plate (22) for splicing two adjacent splicable guardrail assemblies. The extension plate (1503) is movably disposed on one side of the second dustproof plate (15) of the adjacent splicable guardrail assembly.

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