A construction site fence cleaning device

Abstract

The application provides a construction guardrail cleaning device and belongs to the technical field of building construction. The technical scheme is as follows: a bearing rod is arranged, a guardrail sliding groove matched with the guardrail is arranged on the upper side of the bearing rod, the guardrail sliding groove penetrates through the two side end faces of the bearing rod, a scraping section is arranged on the bearing rod, the scraping section comprises a bottom plate arranged on one side of the bearing rod, a supporting rod is arranged on the bottom plate, a cross rod is arranged on the supporting rod, a plurality of groups of scraping assemblies arranged transversely are arranged on the cross rod, and hard brushes for scraping concrete are arranged on the scraping assemblies. The beneficial effects are as follows: the softening section can soften the concrete, preparing for scraping, a plurality of groups of reciprocating scraping assemblies are arranged, the synchronous cleaning of a plurality of middle rods on the guardrail is realized, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a building construction guardrail cleaning device. Background Technology

[0002] In the construction industry, guardrails, as crucial safety protection facilities, are widely used at floor edges, stairwells, reserved openings, and various near-edge work areas. During construction, especially during concrete pouring, formwork erection, or secondary structure construction, concrete slurry is prone to splashing, dripping, or overflowing, adhering to the surfaces of the guardrail's uprights, horizontal bars, and intermediate connecting members. As the concrete hardens, these deposits firmly bond to the metal members, forming hard lumps that are difficult to remove.

[0003] If concrete adhering to the railing poles is not cleaned in time, its long-term accumulation will alter the stress state of the poles and may even affect the overall stability of the railing due to increased weight. Currently, cleaning concrete residue from railings mainly relies on manual labor using tools such as scrapers and wire brushes to knock and scrape it off. This is especially labor-intensive and inefficient when cleaning densely arranged intermediate poles. Since several intermediate poles are generally arranged in parallel and evenly, it is necessary to provide a device for simultaneously cleaning concrete from several intermediate poles to improve work efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a construction guardrail cleaning device for cleaning concrete on several intermediate bars of a guardrail.

[0005] This invention is achieved through the following measures: A construction guardrail cleaning device, characterized in that it includes a support rod, the upper side of which is provided with a guardrail groove that mates with the guardrail, allowing the guardrail to slide along the groove. The groove extends through both end faces of the support rod. A scraping section is provided on the support rod, the scraping section including a base plate on one side of the support rod, a support rod on the base plate, a crossbar on the support rod, and several sets of laterally arranged scraping components on the crossbar. Each scraping component is equipped with a hard brush for scraping away concrete. The bristles of the hard brush are made of a polyamide or polyester polymer containing a wear-resistant modifier. The flexural modulus of the polymer is between 1500 MPa and 3000 MPa to ensure that the bristles do not undergo permanent yielding deformation when in contact with high-hardness dirt. The bristles have a diameter of 0.5 mm to 2.0 mm and a material hardness higher than that of the concrete attachments to be removed but lower than that of the coating on the surface of the guardrail being cleaned.

[0006] The invention also has the following specific features: The scraping assembly includes a mounting rod on a crossbar, on which multiple sets of scraper heads are mounted. These scraper heads are arranged vertically, with the distance between adjacent scraper heads matching the distance of the reciprocating mechanism's vertical movement. This means that after one reciprocating cycle, the areas scraped by adjacent scraper heads will overlap, ensuring no areas are missed. Furthermore, the number of scraper heads is determined based on the length of a typical guardrail center post, guaranteeing that the scraping covers the entire length of the center post. Each scraper head includes a main plate mounted on the mounting rod. A rear side plate is located on one vertical side of the main plate, and a front side plate is located on the other vertical side. The rear and front side plates are staggered, forming L-shaped structures with both the rear and front side plates.

[0007] The hard brushes are provided on the corresponding inner surfaces of the two L-shaped structures. In a specific embodiment, the guardrail generally includes a rectangular frame with several sets of intermediate bars arranged parallel to each other in the middle of the rectangular frame. The hard brushes on the rear side plate and the main plate can scrape the concrete on the two vertical sides of the intermediate bars (taking the side of the bearing bar with the base plate as the front side, that is, scraping the concrete on the rear and right sides of the intermediate bars). The hard brushes on the front side plate and the main plate can scrape the concrete on the other two vertical sides of the adjacent intermediate bars (taking the side of the bearing bar with the base plate as the front side, that is, scraping the concrete on the front and left sides of the adjacent intermediate bars).

[0008] Mounting block 1 is slidably mounted on the base plate via a slide rail. The slide rail is laid out towards the support rod and perpendicular to the support rod. Mounting plate is mounted on the rear end of the base plate away from the support rod. Electric telescopic rod is mounted on the mounting plate. The free end of the electric telescopic rod is mounted on mounting block 1. Limiting plate that cooperates with mounting block 1 is mounted on the front end of the base plate near the support rod. Mounting block 1 is pushed to slide by the electric telescopic rod. The limiting plate can limit the sliding limit position of mounting block 1. When mounting block 1 reaches the limit position, the scraper head is exactly between two adjacent middle bars of the guardrail, with the front side plate extending to the rear side of the guardrail and the rear side plate at the front side of the guardrail. A sliding groove is provided on the upper side of the mounting block 1, and the sliding groove 1 is arranged in the direction of the bearing rod. A lead screw 1 is rotatably arranged on the front and rear end faces of the sliding groove 1. A lead screw slider 1 that cooperates with the sliding groove 1 is arranged around the lead screw 1. The end of the lead screw 1 away from the electric telescopic rod passes through the mounting block 1 and is arranged on the output shaft of the motor 1. The motor 1 is arranged on the corresponding end face of the mounting block 1. Under the drive of the motor 1, the hard brush on the front side plate can be pressed against the rear side of the middle rod of the guardrail, or the hard brush on the rear side plate can be pressed against the front side of the middle rod of the guardrail. A mounting block 2 is provided on the lead screw slider 1. A sliding groove 2 is provided on the upper side of the mounting block 2. The sliding groove 2 is parallel to the bearing rod. A lead screw 2 is rotatably mounted on the front and rear end faces of the sliding groove 2. A lead screw slider 2 that cooperates with the sliding groove 2 is provided around the lead screw 2. One end of the lead screw 2 passes through the mounting block 2 and is mounted on the output shaft of the motor 2. The motor 2 is mounted on the corresponding end face of the mounting block 2. A support rod is provided on the lead screw slider 2. Driven by the motor 2, the hard brush on the main board can be pressed against the right side of the middle bar of the guardrail, or the hard brush on the main board can be pressed against the left side of the adjacent middle bar of the guardrail.

[0009] The support rod is an L-shaped rod facing the bearing rod. A reciprocating mechanism is provided at the free end of the support rod. The reciprocating mechanism includes a U-shaped frame fixed to the support rod. A disc is vertically arranged between the left and right side plates of the U-shaped frame. A pair of limiting posts are provided on the upper and lower sides of the disc facing the rear side of the bearing rod. A circular groove is provided in the middle of the disc. A rotating shaft is located at the center of the circular groove. A rotating disk that mates with the circular groove is provided around the rotating shaft. An eccentric cylinder is provided on the rear side of the rotating disk. A corresponding rectangular frame is slidably arranged around the eccentric cylinder. Sliding rods are provided on the upper and lower sides of the rectangular frame. Each sliding rod is located on a corresponding side. Between the limiting posts, a limiting circular plate is provided at the free end of the limiting post to prevent the sliding rod from falling off. A motor is provided on the front side of the disc, and the rotating shaft passes through the disc and is located on the output shaft of the motor. The upper sliding rod is connected to the crossbar through a transition rod. The motor drives the rotating disc to rotate through the rotating shaft. Through the action of the eccentric cylinder and the rectangular frame, the sliding rod slides up and down, thereby driving the scraper to slide up and down, realizing the scraping of concrete on the middle rod. In a specific embodiment, multiple sets of scrapers are reasonably set according to the distance of the up and down reciprocating motion to cover the entire length range of the middle rod, so as to achieve comprehensive and effective scraping of concrete on it.

[0010] Auxiliary rods are provided on both the left and right side plates of the U-shaped frame. Two sets of sleeves that cooperate with the auxiliary rods are fixed on the front side of the crossbar away from the scraper head. The auxiliary rods slide through the sleeves. In a specific embodiment, the auxiliary rods are L-shaped and are mainly used to strengthen the auxiliary support. The crossbars and scraping components can be made of lightweight materials to reduce the overall weight.

[0011] The rear side of the crossbar is provided with several sets of T-shaped sliding grooves, and a matching T-shaped slider is slidably disposed in the several sets of T-shaped sliding grooves. The T-shaped slider is provided with the mounting rod. Both sides of the T-shaped slider are provided with springs, and the other end of the springs is fixed to the corresponding end face of the T-shaped groove. When the scraper head does not contact the middle bar of the guardrail, the scraping component is in the middle position of the T-shaped groove under the action of the springs on both sides. Driven by the motor, the hard brush on the main board is pressed against the right or left side of the middle bar of the guardrail. Due to the action of the springs, a corresponding pre-tightening force is generated to achieve a better scraping effect. In addition, due to manufacturing deviations, the distance between the middle bars of the guardrail may be uneven. The sliding allowance of the scraping component can compensate for the impact of this unevenness.

[0012] A T-shaped groove 2 is provided on one vertical side of the motherboard. The T-shaped groove 2 passes through the rear end face of the motherboard away from the mounting rod. A matching T-shaped slider 2 is slidably arranged in the T-shaped groove 2. The rear side plate is provided on the T-shaped slider 2. A hard brush is provided on the inner side of the L-shaped structure formed by the rear side plate and the T-shaped slider 2. An auxiliary plate is provided on the rear end face of the rear side panel, and an installation groove is provided on the rear end face of the main board away from the mounting rod. Several sets of tension springs are fixed in the installation groove, and the free ends of the tension springs are fixed on the auxiliary plate. In a specific embodiment, auxiliary grooves that extend to the installation groove can be opened on the upper and lower sides of the main board. One end of the tension spring is fixed on the auxiliary plate, and the other end is fixed on the U-shaped bracket. The bracket slides into the bottom of the installation groove through the auxiliary grooves on both sides. Bolts are provided on the two sides of the bracket to fix it to the upper and lower sides of the main board. Driven by the motor, the crossbar moves away from the guardrail, so that the rear side panel is pressed against the middle bar of the guardrail. Under the action of the tension spring, it has a certain pre-tightening force, which enhances the scraping effect. A T-shaped groove is provided on the other vertical side of the motherboard. A matching T-shaped slider is slidably disposed in the T-shaped groove. The front side plate is disposed on the T-shaped slider. A hard brush is provided on the inner side of the L-shaped structure formed by the front side plate and the T-shaped slider. An auxiliary plate two is provided on the corresponding vertical side of the main board near the mounting rod. A spring two is fixed on the auxiliary plate two, and the other end of the spring two is fixed on the front side plate. Driven by the motor one, the crossbar moves towards the guardrail, so that the front side plate presses against the middle bar of the guardrail. Under the action of the spring two, it has a certain pre-tightening force, which enhances the scraping effect.

[0013] The support rod is also equipped with a guardrail limiting frame, which is used to limit the guardrail and prevent it from shaking during operation. The guardrail limiting frame includes a T-shaped groove four disposed on the side of the bearing rod away from the base plate. A matching T-shaped slider four is slidably disposed in the T-shaped groove four. A rear end rod is disposed on the T-shaped slider four. A vertical rod is disposed on the rear end rod. A sliding rod extending towards the guardrail is slidably disposed at the upper end of the vertical rod through the groove structure. A U-shaped clamp for cooperating with the upper frame of the guardrail is disposed at the end of the sliding rod facing the guardrail. A screw is disposed on both the upper and lower sides of the U-shaped clamp through a threaded structure. A handle is disposed on the outer end of the screw. When the upper frame of the guardrail is clamped into the U-shaped clamp, the screws on both sides are pressed against the upper and lower sides of the upper frame of the guardrail by tightening the handle. A screw rod 2 for locking the slide rod is provided through the threaded structure on the upper end face of the vertical rod. A handle 2 is provided on the outer end of the screw rod 2. The slide rod is slidably adjusted so that the upper frame of the guardrail is locked in the U-shaped clamp, and the slide rod is fixed by tightening the screw rod 2. The rear end of the rear end rod is provided with a long screw through the T-shaped slider four via a threaded structure. A handle three is provided on the outer end of the long screw. By tightening the long screw, the rear end rod can be limited and fixed, thereby locking the guardrail limit frame and limiting and fixing the position of the guardrail. Furthermore, several sets of insertion holes that match the long screw can be provided on the bottom of the groove of the T-shaped slider four.

[0014] The vertical pole is a telescopic pole, which includes an outer pole and an inner pole that is slidably sleeved inside the outer pole. The outer side of the outer pole near the upper end is provided with a screw three for limiting and fixing the inner pole through a threaded structure. The outer end of the screw three is provided with a handle four. After adjusting the telescopic pole to a suitable height according to the height of the guardrail, the screw three is tightened to lock the limit.

[0015] The support rod is also equipped with a softening section, which is located in front of the scraping section. The softening section includes baffles on both sides of the support rod. The baffles on both sides are symmetrical about the central section of the support rod. Several sets of nozzles are provided on the inner sides of the opposing baffles on both sides. The several sets of nozzles on both sides are respectively connected to two pipelines. The two pipelines are connected to pipeline two. Pipeline two is connected to a storage tank. The storage tank contains concrete cleaner (usually containing a weak acid component). In addition, pipeline two is equipped with a pump and corresponding valve switches. The guardrail is placed between the two baffles. The concrete cleaner is sprayed through the nozzles to soften the concrete for subsequent processing.

[0016] During operation, the guardrail is first installed onto the softened section of the support rod via the guardrail slide groove and fixed in place by the guardrail limiting bracket. Then, concrete remover is sprayed onto the middle rod of the guardrail. Next, handle three is loosened and the guardrail is pushed to the scraping section, ensuring that several scraping components are positioned as close as possible to the middle of two adjacent middle rods. Then, using the electric telescopic rod, the scraper head is positioned precisely between two adjacent middle rods, with the front side plate extending from the rear of the guardrail and the rear side plate at the front. Then, motor two presses the hard brush on the main board against the right side of the middle rod. Motor one then presses the hard brush on the front side plate against the rear side of the middle rod. Motor three is then activated, causing the scraping components to move up and down reciprocally to scrape the rear and right sides of the middle rod. Afterward, motors two and one are used sequentially to press the hard brush against the front and left sides of the middle rod, and motor three is used to scrape the concrete off the middle rod in a reciprocating motion. If the number of middle bars on the guardrail exceeds the number of scraping components, after scraping a section, the guardrail can be moved again so that the remaining middle bars can be moved to the scraping components for scraping, and so on, until all the middle bars on the guardrail are cleaned.

[0017] After the scraped section is cleaned, slide the guardrail out and rinse it or manually clean the rectangular frame.

[0018] The beneficial effects of this invention are as follows: the softening section can soften the concrete to prepare it for scraping; and the reciprocating scraping components can simultaneously clean several intermediate bars on the guardrail, thus improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the scraping component in an embodiment of the present invention.

[0021] Figure 3This is a schematic diagram of the scraper head in an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the reciprocating mechanism in an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the guardrail limiting frame in an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of an embodiment of the present invention in which the scraper head is provided with a U-shaped support structure.

[0025] The attached diagram is labeled as follows: 1. Bearing rod; 2. Horizontal bar; 3. Auxiliary rod; 4. Sleeve; 5. Support rod; 6. Mounting block two; 7. Mounting block one; 8. Base plate; 9. Electric telescopic rod; 10. Motor two; 11. Motor one; 12. Limiting plate; 13. Softening section; 14. Mounting rod; 15. Scraper head; 16. Vertical rod; 17. Sliding rod; 18. Guardrail; 19. Reciprocating mechanism; 20. Front side plate; 21. Main board; 22. Rear side plate; 23. Spring 1; 24. Auxiliary plate 2; 25. Spring 2; 26. T-shaped slider 2; 27. T-shaped slider 3; 28. Tension spring; 29. ​​Auxiliary plate 1; 30. Hard brush; 31. U-shaped frame; 32. Rotating disk; 33. Disc; 34. Eccentric cylinder; 35. Sliding rod; 36. Limiting post; 37. Rectangular frame; 38. Rear end rod; 39. U-shaped clamp. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0030] See Figures 1-6 A construction guardrail cleaning device includes a support rod 1. A guardrail groove is provided on the upper side of the support rod 1 to cooperate with a guardrail 18, allowing the guardrail 18 to slide along the groove. The groove extends through both end faces of the support rod 1. A scraping section is provided on the support rod 1, including a base plate 8 on one side of the support rod 1. A support rod 5 is provided on the base plate 8, and a crossbar 2 is provided on the support rod 5. Several sets of horizontally arranged scraping components are provided on the crossbar 2. Each scraping component is equipped with a hard brush 30 for scraping concrete. The bristles of the hard brush 30 are made of polyamide or polyester polymer containing a wear-resistant modifier. The flexural modulus of the polymer is between 1500 MPa and 3000 MPa to ensure that the bristles do not undergo permanent yielding deformation when in contact with high-hardness dirt. The bristles have a diameter of 0.5 mm to 2.0 mm and their material hardness is higher than that of the concrete attachments to be removed but lower than that of the coating on the surface of the guardrail 18 being cleaned.

[0031] The scraping assembly includes a mounting rod 14 mounted on the crossbar 2, which is perpendicular to the crossbar 2. Multiple scraper heads 15 are mounted on the mounting rod 14, arranged vertically. The distance between two adjacent scraper heads 15 is matched with the distance of the reciprocating mechanism 19's vertical reciprocating motion. This means that after one reciprocating motion cycle, the areas scraped by two adjacent scraper heads 15 will overlap, ensuring no unscraped areas are missed. Furthermore, the number of scraper heads 15 is set according to the length of a commonly used guardrail middle bar, ensuring that the scraping covers the entire length of the middle bar. Each scraper head 15 includes a main plate 21 mounted on the mounting rod 14. A rear side plate 22 is mounted on one vertical side of the main plate 21, and a front side plate 20 is mounted on the other vertical side of the main plate 21. The rear side plate 22 and the front side plate 20 are staggered, forming an L-shaped structure with the main plate 21 and the front side plate 20 with the main plate 21.

[0032] Hard brushes 30 are provided on the corresponding inner surfaces of the two L-shaped structures. In a specific embodiment, the guardrail 18 generally includes a rectangular frame with several sets of intermediate bars arranged in parallel in the middle of the rectangular frame. The hard brushes 30 on the rear side plate 22 and the main board 21 can scrape the concrete on the two vertical sides of the intermediate bars (taking the side of the bearing bar 1 with the base plate 8 as the front side, that is, scraping the concrete on the rear and right sides of the intermediate bars). The hard brushes 30 on the front side plate 20 and the main board 21 can scrape the concrete on the other two vertical sides of the adjacent intermediate bars (taking the side of the bearing bar 1 with the base plate 8 as the front side, that is, scraping the concrete on the front and left sides of the adjacent intermediate bars).

[0033] Mounting block 7 is slidably mounted on the base plate 8 via a slide rail. The slide rail is laid out in the direction of the bearing rod 1 and is perpendicular to the bearing rod 1. Mounting plate is mounted on the rear end of the base plate 8 away from the bearing rod 1. Electric telescopic rod 9 is mounted on the mounting plate. The free end of electric telescopic rod 9 is mounted on mounting block 7. Limiting plate 12 is mounted on the base plate 8 near the front end of the bearing rod 1, which cooperates with mounting block 7. Mounting block 7 is slid by electric telescopic rod 9. Limiting plate 12 can limit the sliding limit position of mounting block 7. When mounting block 7 reaches the limit position, scraper head 15 is exactly between two adjacent middle bars of guardrail 18, and front side plate 20 extends out of the rear side of guardrail 18 and rear side plate 22 is in front of guardrail 18. A sliding groove is provided on the upper side of the mounting block 7. The sliding groove is arranged in the direction of the bearing rod 1. A lead screw is rotatably installed on the front and rear end faces of the sliding groove. A lead screw slider is provided around the lead screw and cooperates with the sliding groove. The end of the lead screw away from the electric telescopic rod 9 passes through the mounting block 7 and is set on the output shaft of the motor 11. The motor 11 is set on the corresponding end face of the mounting block 7. Under the drive of the motor 11, the hard brush 30 on the front side plate 20 can be pressed against the rear side of the middle rod of the guardrail 18, or the hard brush 30 on the rear side plate 22 can be pressed against the front side of the middle rod of the guardrail 18. A mounting block 6 is provided on the lead screw slider 1. A sliding groove 2 is provided on the upper side of the mounting block 2 6. The sliding groove 2 is parallel to the bearing rod 1. The lead screw 2 is rotatably mounted on the front and rear end faces of the sliding groove 2. A lead screw slider 2 that cooperates with the sliding groove 2 is provided around the lead screw 2. One end of the lead screw 2 passes through the mounting block 2 6 and is mounted on the output shaft of the motor 2 10. The motor 2 10 is mounted on the corresponding end face of the mounting block 2 6. A support rod 5 is provided on the lead screw slider 2. Driven by the motor 2 10, the hard brush 30 on the main board 21 can be pressed against the right side of the middle rod of the guardrail 18, or the hard brush 30 on the main board 21 can be pressed against the left side of the adjacent middle rod of the guardrail 18.

[0034] The support rod 5 is an L-shaped rod facing the bearing rod 1. A reciprocating mechanism 19 is provided at the free end of the support rod 5. The reciprocating mechanism 19 includes a U-shaped frame 31 fixed on the support rod 5. A disc 33 is vertically arranged between the left and right side plates of the U-shaped frame 31. A pair of limiting posts 36 are provided on the upper and lower sides of the disc 33 facing the rear side of the bearing rod 1. A circular groove is provided in the middle of the disc 33. A rotating shaft is provided at the center of the circular groove. A rotating disk 32 that cooperates with the circular groove is provided around the rotating shaft. An eccentric cylinder 34 is provided on the rear side of the rotating disk 32. A corresponding rectangular frame 37 is slidably arranged around the eccentric cylinder 34. Sliding rods 35 are provided on the upper and lower sides of the rectangular frame 37. The sliding rods 35 on both sides are arranged on two... Between a pair of corresponding limiting posts 36 on the side, a limiting circular plate is provided at the free end of the limiting post 36 to prevent the sliding rod 35 from falling off. A motor 3 is provided on the front side of the disc 33. The rotating shaft passes through the disc 33 and is set on the output shaft of the motor 3. The upper sliding rod 35 is connected to the crossbar 2 through a transition rod. The motor 3 drives the rotating disc 32 to rotate through the rotating shaft. Through the action of the eccentric cylinder 34 and the rectangular frame 37, the sliding rod 35 slides up and down, thereby driving the scraper head 15 to slide up and down, realizing the scraping of concrete on the middle rod. In a specific embodiment, multiple sets of scraper heads 15 are reasonably set according to the distance of the up and down reciprocating motion to cover the entire length range of the middle rod, so as to realize the comprehensive and effective scraping of concrete on it.

[0035] Auxiliary rods 3 are provided on both the left and right side plates of the U-shaped frame 31. Two sets of sleeves 4 that cooperate with the auxiliary rods 3 are fixed on the front side of the crossbar 2 away from the scraper head 15. The auxiliary rods 3 slide through the sleeves 4. In a specific embodiment, the auxiliary rods 3 are L-shaped and are mainly used to strengthen the auxiliary support. The crossbar 2 and the scraping assembly can be made of lightweight materials to reduce the overall weight.

[0036] Several sets of T-shaped sliding grooves are provided on the rear side of the crossbar 2. A matching T-shaped slider is slidably arranged in the several sets of T-shaped sliding grooves. The T-shaped slider is provided with a mounting rod 14. Both sides of the T-shaped slider are provided with springs 23. The other end of the springs 23 is fixed to the corresponding end face of the T-shaped slide groove. When the scraper head 15 does not contact the middle bar of the guardrail 18, the scraping component is in the middle position of the T-shaped slide groove under the action of the springs 23 on both sides. Driven by the motor 10, the hard brush 30 on the main board 21 is pressed against the right or left side of the middle bar of the guardrail 18. Due to the action of the springs 23, a corresponding pre-tightening force is generated to achieve a better scraping effect. In addition, due to manufacturing deviations, the distance between the middle bars of the guardrail 18 may be uneven. The sliding allowance of the scraping component can compensate for the impact of this unevenness.

[0037] A T-shaped groove 2 is provided on one vertical side of the main board 21. The T-shaped groove 2 passes through the rear end face of the main board 21 away from the mounting rod 14. A matching T-shaped slider 26 is slidably provided in the T-shaped groove 2. A rear side plate 22 is provided on the T-shaped slider 26. A hard brush 30 is provided on the inner side of the L-shaped structure formed by the rear side plate 22 and the T-shaped slider 26. An auxiliary plate 29 is provided on the rear end face of the rear side plate 22. An installation groove is provided on the rear end face of the main plate 21 away from the mounting rod 14. Several sets of tension springs 28 are fixed in the installation groove. The free end of the tension spring 28 is fixed on the auxiliary plate 29. In a specific embodiment, auxiliary grooves that extend to the installation groove can be opened on the upper and lower sides of the main plate 21. One end of the tension spring 28 is fixed on the auxiliary plate 29, and the other end is fixed on the U-shaped bracket. The bracket slides into the bottom of the installation groove through the auxiliary grooves on both sides. Bolts are provided on the two sides of the bracket to fix it to the upper and lower sides of the main plate 21. Driven by the motor 11, the crossbar 2 moves away from the guardrail 18, so that the rear side plate 22 is pressed against the middle bar of the guardrail 18. Under the action of the tension spring 28, it has a certain pre-tightening force, which enhances the scraping effect. On the other vertical side of the main board 21, there is a T-shaped slide groove 3. A matching T-shaped slider 3 27 is slidably arranged in the T-shaped slide groove 3. A front side plate 20 is arranged on the T-shaped slider 3 27. A hard brush 30 is arranged on the inner side of the L-shaped structure formed by the front side plate 20 and the T-shaped slider 3 27. An auxiliary plate 24 is provided on the corresponding vertical side of the main board 21 near the mounting rod 14. A spring 25 is fixed on the auxiliary plate 24. The other end of the spring 25 is fixed on the front side plate 20. Driven by the motor 11, the crossbar 2 moves towards the guardrail 18, so that the front side plate 20 is pressed against the middle bar of the guardrail 18. Under the action of the spring 25, it has a certain pre-tightening force, which enhances the scraping effect.

[0038] The support rod 1 is also equipped with a guardrail limit frame, which is used to limit the guardrail 18 and prevent it from shaking during operation. The guardrail limiting frame includes a T-shaped groove four on the side of the bearing rod 1 away from the base plate 8. A matching T-shaped slider four is slidably arranged in the T-shaped groove four. A rear end rod 38 is arranged on the T-shaped slider four. A vertical rod 16 is arranged on the rear end rod 38. A slide rod 17 extending towards the guardrail 18 is slidably arranged at the upper end of the vertical rod 16 through the groove structure. A U-shaped clamp 39 that cooperates with the upper frame of the guardrail 18 is arranged at the end of the slide rod 17 facing the guardrail 18. A screw is arranged on the upper and lower sides of the U-shaped clamp 39 through a threaded structure. A handle is arranged on the outer end of the screw. When the upper frame of the guardrail 18 is clamped in the U-shaped clamp 39, the screws on both sides are pressed against the upper and lower sides of the upper frame of the guardrail 18 by tightening the handle. A screw rod 2 for locking the slide rod 17 is provided through a threaded structure on the upper end face of the vertical rod 16. A handle 2 is provided on the outer end of the screw rod 2. The slide rod 17 is slidably adjusted so that the upper frame of the guardrail 18 is locked in the U-shaped clamp 39. The slide rod 17 is fixed by tightening the screw rod 2. The rear end of the rear end rod 38 is provided with a long screw through the T-shaped slider four via a threaded structure. A handle three is provided on the outer end of the long screw. By tightening the long screw, the rear end rod 38 can be fixed and locked, thereby locking the guardrail limit frame and fixing the position of the guardrail 18. Furthermore, several sets of insertion holes that match the long screw can be provided on the bottom of the groove of the T-shaped slider four.

[0039] The vertical rod 16 is a telescopic rod, which includes an outer rod and an inner rod that is slidably sleeved inside the outer rod. The outer side of the outer rod near the upper end is provided with a screw three for limiting and fixing the inner rod through a threaded structure. A handle four is provided at the outer end of the screw three. After adjusting the telescopic rod to a suitable height according to the height of the guardrail 18, the limit is locked by tightening the screw three.

[0040] The support rod 1 is also equipped with a softening section 13, which is located in front of the scraping section. The softening section 13 includes baffles on both sides of the support rod 1. The baffles on both sides are symmetrical about the central section of the support rod 1. Several sets of nozzles are provided on the inner sides of the opposing baffles on both sides. The several sets of nozzles on both sides are respectively connected to two pipes 1, which are connected to pipe 2. Pipe 2 is connected to a storage tank containing concrete cleaner (usually containing a weak acid component). In addition, a pump and corresponding valve switches are provided in pipe 2. The guardrail 18 is placed between the two baffles. The concrete cleaner is sprayed through the nozzles to soften the concrete for subsequent processing.

[0041] During operation, firstly, the guardrail 18 is installed onto the softening section 13 of the bearing rod 1 via the guardrail groove, and then fixed in place by the guardrail limiting bracket. Next, concrete remover is sprayed onto the middle rod of the guardrail 18. Then, the handle is loosened and the guardrail 18 is pushed to the scraping section, ensuring that several scraping components are positioned as close as possible to the middle of two adjacent middle rods. Then, using the electric telescopic rod 9, the scraper head 15 is positioned precisely between two adjacent middle rods of the guardrail 18, with the front side plate 20 extending behind the guardrail 18 and the rear side plate 22 positioned in front of the guardrail 18. Finally, the motor 1... 0. This causes the hard brush 30 on the main board 21 to press firmly against the right side of the middle bar of the guardrail 18. Then, through motor 11, the hard brush 30 on the front side plate 20 is pressed firmly against the rear side of the middle bar of the guardrail 18. After that, motor 3 is started, causing the scraping component to move up and down reciprocally to scrape the rear and right sides of the middle bar. After that, motors 2 and 11 are used in sequence to press the hard brush 30 against the front and left sides of the middle bar of the guardrail 18. Then, motor 3 is used to control the concrete on the middle bar to scrape up and down reciprocally. If the number of middle bars of the guardrail 18 is greater than the number of scraping components, after scraping a section, the guardrail 18 can be moved again to move the unscraped middle bars to the scraping components for scraping, and so on, to complete the cleaning of all the middle bars on the guardrail 18.

[0042] After the scraped section is cleaned, slide the guardrail 18 out and rinse it or manually clean the rectangular frame.

[0043] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A construction site guardrail cleaning device, characterized in that, The system includes a support rod (1), on the upper side of which is provided a guardrail groove that cooperates with the guardrail (18). The guardrail groove passes through both end faces of the support rod (1). The support rod (1) is provided with a scraping section, which includes a base plate (8) on one side of the support rod (1). The base plate (8) is provided with a support rod (5). The support rod (5) is provided with a crossbar (2). The crossbar (2) is provided with several sets of horizontally arranged scraping components. The scraping components are provided with a hard brush (30) for scraping concrete.

2. The construction guardrail cleaning device according to claim 1, characterized in that, The scraping assembly includes a mounting rod (14) mounted on a crossbar (2). The mounting rod (14) is provided with multiple sets of scraper heads (15), which are arranged vertically. Each scraper head (15) includes a main board (21) mounted on the mounting rod (14). A rear side plate (22) is provided on one vertical side of the main board (21), and a front side plate (20) is provided on the other vertical side of the main board (21). The rear side plate (22) and the front side plate (20) are staggered. The rear side plate (22) and the main board (21) and the front side plate (20) and the main board (21) respectively form an L-shaped structure.

3. The construction guardrail cleaning device according to claim 2, characterized in that, The hard bristles (30) are provided on the corresponding inner surfaces of the two L-shaped structures.

4. The construction guardrail cleaning device according to claim 1, characterized in that, Mounting block 1 (7) is slidably mounted on the base plate (8) via a slide rail. Mounting plate is mounted on the rear end of the base plate (8) away from the bearing rod (1). Electric telescopic rod (9) is mounted on the mounting plate. The free end of the electric telescopic rod (9) is mounted on the mounting block 1 (7). Limiting plate (12) that cooperates with mounting block 1 (7) is mounted on the front end of the base plate (8) near the bearing rod (1). A sliding groove is provided on the upper side of the mounting block (7). The sliding groove is arranged in the direction of the bearing rod (1). A lead screw is rotatably arranged on the front and rear end faces of the sliding groove. A lead screw slider is arranged around the lead screw and cooperates with the sliding groove. The end of the lead screw away from the electric telescopic rod (9) passes through the mounting block (7) and is set on the output shaft of the motor (11). The motor (11) is set on the corresponding end face of the mounting block (7). The first lead screw slider is provided with a second mounting block (6). The second mounting block (6) is provided with a second sliding groove on its upper side. The second sliding groove is parallel to the bearing rod (1). The second lead screw is rotatably mounted on the front and rear end faces of the second sliding groove. The second lead screw slider is provided around the second lead screw and cooperates with the second sliding groove. One end of the second lead screw passes through the second mounting block (6) and is mounted on the output shaft of the second motor (10). The second motor (10) is mounted on the corresponding end face of the second mounting block (6). The second lead screw slider is provided with a support rod (5).

5. The construction guardrail cleaning device according to claim 1, characterized in that, The support rod (5) is an L-shaped rod facing the bearing rod (1). A reciprocating mechanism (19) is provided at the free end of the support rod (5). The reciprocating mechanism (19) includes a U-shaped frame (31) fixed on the support rod (5). A disc (33) is vertically arranged between the left and right side plates of the U-shaped frame (31). A pair of limiting posts (36) are provided on the upper and lower sides of the disc (33) facing the rear side of the bearing rod (1). A circular groove is provided in the middle of the disc (33). A rotating shaft is provided in the center of the circular groove. A ring is provided around the rotating shaft to cooperate with the circular groove. The rotating disk (32) has an eccentric cylinder (34) on its rear side. A rectangular frame (37) is slidably arranged around the eccentric cylinder (34). Sliding rods (35) are arranged on both the upper and lower sides of the rectangular frame (37). The sliding rods (35) on both sides are arranged between a pair of corresponding limiting posts (36) on both sides. A motor is arranged on the front side of the disk (33). The rotating shaft passes through the disk (33) and is arranged on the output shaft of the motor. The upper sliding rod (35) is connected to the crossbar (2) through a transition rod.

6. The construction guardrail cleaning device according to claim 5, characterized in that, Auxiliary rods (3) are provided on both the left and right side plates of the U-shaped frame (31). Two sets of sleeves (4) that cooperate with the auxiliary rods (3) are fixed on the front side of the crossbar (2) away from the scraper (15). The auxiliary rods (3) slide through the sleeves (4).

7. The construction guardrail cleaning device according to claim 2, characterized in that, The rear side of the crossbar (2) is provided with several sets of T-shaped sliding grooves, and a matching T-shaped slider is slidably arranged in the several sets of T-shaped sliding grooves. The T-shaped slider is provided with the mounting rod (14). Both sides of the T-shaped slider are provided with springs (23), and the other end of the springs (23) is fixed on the corresponding end face of the T-shaped groove.

8. The construction guardrail cleaning device according to claim 2, characterized in that, A T-shaped groove is provided on one vertical side of the main board (21). The T-shaped groove passes through the rear end face of the main board (21) away from the mounting rod (14). A matching T-shaped slider (26) is slidably arranged in the T-shaped groove. The rear side plate (22) is provided on the T-shaped slider (26). A hard brush (30) is provided on the inner side of the L-shaped structure formed by the rear side plate (22) and the T-shaped slider (26). An auxiliary plate (29) is provided on the rear end face of the rear side plate (22), and an installation groove is provided on the rear end face of the main plate (21) away from the mounting rod (14). Several sets of tension springs (28) are fixed in the installation groove, and the free end of the tension springs (28) is fixed on the auxiliary plate (29). A T-shaped groove is provided on the other vertical side of the main board (21). A matching T-shaped slider (27) is slidably disposed in the T-shaped groove. The front side plate (20) is disposed on the T-shaped slider (27). A hard brush (30) is provided on the inner side of the L-shaped structure formed by the front side plate (20) and the T-shaped slider (27). An auxiliary plate (24) is provided on the corresponding vertical side of the main board (21) near the mounting rod (14). A spring (25) is fixed on the auxiliary plate (24), and the other end of the spring (25) is fixed on the front side plate (20).

9. The construction guardrail cleaning device according to claim 1, characterized in that, The support rod (1) is also equipped with a guardrail limit frame; The guardrail limiting frame includes a T-shaped groove four on the side of the bearing rod (1) away from the base plate (8). A matching T-shaped slider four is slidably arranged in the T-shaped groove four. A rear end rod (38) is arranged on the T-shaped slider four. A vertical rod (16) is arranged on the rear end rod (38). A sliding rod (17) extending towards the guardrail (18) is slidably arranged at the upper end of the vertical rod (16) through the groove structure. A U-shaped clamp (39) that cooperates with the upper frame of the guardrail (18) is arranged at the end of the sliding rod (17) facing the guardrail (18). A screw is arranged on both the upper and lower sides of the U-shaped clamp (39) through a threaded structure. A handle is arranged on the outer end of the screw. The upper end face of the vertical rod (16) is provided with a threaded structure for locking the slide rod (17), and a handle is provided on the outer end of the screw rod. The rear end of the rear end rod (38) is provided with a long screw that passes through the T-shaped slider four through a threaded structure, and a handle three is provided on the outer end of the long screw.

10. The construction guardrail cleaning device according to claim 9, characterized in that, The vertical rod (16) is a telescopic rod, which includes an outer rod and an inner rod that is slidably sleeved in the outer rod. The outer side of the outer rod near the upper end is provided with a screw three for limiting and fixing the inner rod through a threaded structure. A handle four is provided at the outer end of the screw three. The support rod (1) is also provided with a softening section (13), which is located in front of the scraping section. The softening section (13) includes baffles on both sides of the support rod (1). The baffles on both sides are symmetrical about the central section of the support rod (1). Several sets of nozzles are provided on the inner sides of the baffles on both sides.

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