Sand suction hole cover part and its covering method

Abstract

The present invention discloses a sand suction hole cover member, which includes a pipeline used as a sand suction pipeline and a cover plate covering the upper port of the pipeline, and the cover plate is fixed to the steel structure; the present invention also provides a method for covering the sand suction hole by using the sand suction hole cover member. First, the bottom plate is welded to the pipeline and then welded to the girder, and the whole participates in the sand washing process and the sand suction process. After the sand suction is completed, the stepping plate is covered on the top of the pipeline and fixed by screws. By covering the sand suction hole with the cover plate and fixing the cover plate on the steel structure, the welding and plugging of the sand suction hole after the sand suction is completed are avoided, which not only simplifies the plugging work of the sand suction hole, but also avoids the damage to the paint on the surface of the sealing area because the plugging work no longer requires welding. There is no need for secondary construction to apply paint, which is easy for the staff to implement, reduces the workload, saves costs and improves work efficiency at the same time.

Description

Technical Field

[0001] The present invention relates to the field of large steel structure boxes, and particularly relates to a sand suction hole cover member and a covering method thereof. Background Art

[0002] After a large steel structure welded steel box is completed, in order to remove rust and zinc salts and other dirt at the damaged primer of the plate, and at the same time clean up impurities such as welding oxide scale that were not processed in time during the welding process, it is usually necessary to perform a sand blasting process on the inside and surface of the box, and then all the remaining sand in the box is cleaned through the sand suction holes at the bottom of the box. If the sand suction holes are not sealed after the sand suction is completed, there will be a risk of personnel stepping into the void and water entering the box.

[0003] In the prior art, after the sand suction work is completed, the sand suction holes are usually sealed by welding with steel plates. However, this operation has the following problems: Welding and sealing requires operators to enter the steel structure box for welding. After welding, flaw detection needs to be performed on the welds. The paint around the welding area will be damaged during the welding process, so the paint needs to be reapplied. The working environment is harsh and the workload is large. Summary of the Invention

[0004] The main purpose of the present invention is to solve the problem of inconvenient welding and sealing of sand suction holes in the prior art.

[0005] To achieve the above purpose, an embodiment of the present invention discloses a sand suction hole cover member for covering the sand suction holes on a steel structure, including: a pipe for serving as a sand suction pipeline; and a cover plate covering the upper port of the pipe, and the cover plate is fixed to the steel structure.

[0006] By adopting the above technical solution, the sand suction holes are covered by the cover plate and the cover plate is fixed on the steel structure, thereby avoiding welding and sealing of the sand suction holes after the sand suction is completed. This not only simplifies the sealing work of the sand suction holes, but also avoids damage to the surface paint of the sealed area because welding is no longer required for the sealing work. There is no need to perform secondary construction and paint coating, saving costs and improving work efficiency at the same time.

[0007] Optionally, in the sand suction hole cover member provided by the embodiment of the present invention, the cover plate is provided with ventilation holes.

[0008] Optionally, in the sand suction hole cover member provided by the embodiment of the present invention, mounting holes are circumferentially arranged on the outer edge of the cover plate, and the cover plate is fixed to the steel structure through the mounting holes by screws.

[0009] Optionally, in the sand suction hole cover member provided by the embodiment of the present invention, it further includes a side plate fixed to the outer side of the upper part of the pipe, and the pipe and the side plate are sealed.

[0010] Optionally, in the sand suction hole cover provided by the embodiment of the present invention, a through hole is provided in the middle of the side plate, and the diameter of the through hole is equal to the aperture of the sand suction hole.

[0011] Optionally, in the sand suction hole cover provided by the embodiment of the present invention, the side plate and the outer surface of the pipeline are coated with a zinc film.

[0012] Optionally, in the sand suction hole cover provided by the embodiment of the present invention, the pipeline is a bent pipe.

[0013] Correspondingly, the embodiment of the present invention also provides a method for covering a sand suction hole, which is carried out by using the sand suction hole cover provided by the embodiment of the present invention, and includes:

[0014] In the preparation stage, the side plate is welded to the pipeline, and the side plate is welded to the steel structure;

[0015] In the sand washing stage, the pipeline is taken as a whole and participates in the sand washing process;

[0016] In the sand suction stage, the pipeline is used to suck sand;

[0017] In the covering stage, the cover plate is covered on the upper port of the pipeline and fixed to the steel structure.

[0018] Optionally, in the sand suction hole cover provided by the embodiment of the present invention, the preparation stage is specifically:

[0019] The pipeline extends out through the through hole of the side plate, and the upper end face of the pipeline is slightly higher than the upper surface of the side plate;

[0020] The side plate and the outer periphery of the pipeline are respectively subjected to groove welding at the positions corresponding to the upper surface of the side plate and the pipeline and fillet welding at the positions corresponding to the lower surface of the side plate and the pipeline;

[0021] The side plate and the steel structure are subjected to fillet welding at the upper surface of the outer edge of the side plate and the lower surface of the steel structure.

[0022] Optionally, in the sand suction hole cover provided by the embodiment of the present invention, after the side plate is welded to the pipeline and before the side plate is welded to the steel structure, it further includes subjecting the welded side plate and pipeline as a whole to hot dip galvanizing treatment.

[0023] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0024] The sand suction hole cover member and covering method provided by the embodiments of the present invention include a pipeline used as a sand suction pipeline and a cover plate covering the upper port of the pipeline, and the cover plate is fixed to a steel structure; by covering the sand suction hole with the cover plate and fixing the cover plate on the steel structure, the welding and plugging of the sand suction hole after the sand suction is completed are avoided, and further damage to the paint on the surface of the sealed area is avoided. Therefore, there is no need for secondary construction to apply paint, which is easy for the staff to implement, reduces the workload, saves costs, and improves work efficiency at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 is a schematic structural diagram of a sand suction hole cover member provided by an embodiment of the present invention;

[0027] Figure 2 is Figure 1 a sectional view along line A-A;

[0028] Figure 3 is a top view of the cover plate in the sand suction hole cover member provided by an embodiment of the present invention;

[0029] Figure 4 is a top view of the side plate in the sand suction hole cover member provided by an embodiment of the present invention;

[0030] Figure 5 is a flowchart of a sand suction hole covering method provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with preferred embodiments, this does not mean that the features of this invention are limited to this implementation manner. On the contrary, the purpose of introducing the invention in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the following description. The present invention can also be implemented without these details. In addition, in order to avoid confusing or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0032] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. And in this example, the direction towards the central axis of the side plate or cover plate is defined as the inner direction, and the direction away from the central axis of the side plate or cover plate is defined as the outer direction.

[0034] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the drawings.

[0035] As Figure 1 shown, an embodiment of the present invention provides a sand suction hole cover member, including: a pipe used as a sand suction pipeline and a cover plate covering the upper port of the pipe. Among them, the cover plate is fixed to the steel structure, and this sand suction hole assembly is used to cover the sand suction hole on the steel structure.

[0036] During the sand suction stage, the sand suction pipe can enter the steel structure box through the pipe 4 to suck the remaining sand. After the sand suction is completed, the cover plate 1 is covered on the upper port of the pipe 4 and the cover plate 1 is fixed to the steel structure. Through the above operations, after the sand suction is completed, the sand suction hole can be blocked without welding the sand suction hole. On the one hand, this makes the work of sealing the sand suction hole very simple and easy for the staff to operate, reducing the workload; on the other hand, since there is no need to weld the sand suction hole, it also avoids damaging the paint on the surface of the sealed area, and there is no need for the staff to detect the welding seam and reapply the paint, which not only saves costs but also improves work efficiency.

[0037] Specifically, Figure 3As shown, the cover plate 1 can be circular, and mounting holes 11 can be circumferentially provided on its outer edge. Workers can tighten the screws 3 through the mounting holes 11 to fix the cover plate 1 on the steel structure 5. In addition, ventilation holes 12 can also be provided on the cover plate 3 for the box body to breathe, so as to facilitate workers to operate inside the box body. In this embodiment, there are 6 mounting holes, which are circumferentially arranged on the outer edge of the cover plate, and 7 ventilation holes, which are circumferentially arranged in the middle of the cover plate. However, in other embodiments, for the convenience of operation and to adapt to different environments, the number and positions of the mounting holes and ventilation holes can also be set in different forms according to actual situations, and the distances between adjacent mounting holes and / or ventilation holes can be equal or unequal, which will not be limited here.

[0038] In addition, during specific implementation, the elbow can be set as the standard part model DN150-II-5-45E, so that it can be manufactured using the standard model, saving costs and facilitating large-scale production.

[0039] Continue to refer to Figure 1 , the sand suction hole cover part of this embodiment further includes a side plate 2 fixed to the outer side of the upper part of the pipeline 4, and the pipeline 4 is sealed with the side plate 2. Specifically, as Figure 4 shown, the side plate 2 can be annular, and a through hole 21 is provided in the middle thereof, and the diameter of the through hole 21 is equal to the diameter of the sand suction hole.

[0040] Specifically, the outer diameter of the pipeline 4 is slightly smaller than the diameter of the sand suction hole and the through hole 21 of the side plate 2 to facilitate the pipeline 4 to pass through the through hole 21 on the side plate 2 and the sand suction hole. For example, if the diameter of the sand suction hole is 162 mm, the diameter of the through hole 21 of the side plate 2 can also be set to 162 mm. Considering that the wall thickness of the pipeline 4 is 5 mm, the inner diameter and outer diameter of the pipeline 4 are respectively set to 150 mm and 160 mm. In this way, it is not only convenient for the pipeline 4 to pass through the through hole 21, but also the gap between the outer wall of the pipeline 4 and the through hole 21 on the side plate 2 will not be too large, which is convenient for welding them.

[0041] During specific implementation, the pipeline 4 passes through the through hole 21 on the side plate 2 and extends out. The height of the part of the pipeline 4 exposed from the side plate 2 is the same as the wall thickness of the steel structure box body, which is convenient for construction workers to walk inside the box body. The side plate 2 and the pipeline 4 are respectively butt-welded together at the upper edge of the through hole 21 of the side plate and the corresponding fitting position C around the pipeline and fillet-welded together at the lower edge of the through hole 21 of the side plate and the corresponding fitting position B around the pipeline 4. Through such a connection method, the side plate 2 and the pipeline 4 can be better fitted, thereby further improving the waterproofness of the cover part and preventing rainwater from seeping into the interior of the steel structure box body through the gap between the side plate 2 and the pipeline 4 welded. In addition, the side plate 2 and the steel structure 5 are also fillet-welded together at the upper side of the outer edge of the side plate 2 and the corresponding connection position D on the outer side of the steel structure 5 to further fix the side plate.

[0042] Figure 2 As shown in Figure 1 Figure 1 Fig. A-A is a sectional view. It can be seen from the figure that the pipe 4 can be a bent pipe, which is bent in its length direction. When the steel structure box body is suspended, the bent pipe 4 can use its bent shape to prevent rainwater from entering the interior of the steel structure box body.

[0043] In addition, the outer surfaces of the side plate 2 and the pipe 4 are covered with zinc films, which can prevent the side plate 2 or the pipe 4 from rusting or being corroded, thereby causing the sand suction hole cover part to become loose. During implementation, the side plate 2 and the pipe 4 can be subjected to hot dip galvanizing treatment to form zinc films on their outer surfaces.

[0044] The side plate 2, the pipe 4 and the cover plate 1 can be made of metals such as stainless steel or iron. Moreover, the cover plate should be made of a relatively hard metal with a certain thickness to prevent the cover plate from collapsing due to being stepped on by personnel, thus ensuring the walking safety of passing personnel.

[0045] Next, in combination with Figure 5 Figure 5 A method for covering a sand suction hole by using a sand suction hole cover part provided in an embodiment of the present invention will be described. The covering method specifically includes four stages:

[0046] Preparation stage: Weld the side plate to the pipe and weld the side plate to the steel structure.

[0047] Sand flushing stage: Use the pipe as a whole to participate in the sand flushing process.

[0048] Sand suction stage: Perform sand suction through the pipe.

[0049] Covering stage: Cover the upper port of the pipe with the cover plate and fix it to the steel structure with screws.

[0050] Through the cooperation of the above four stages, after sand suction is completed, it is no longer necessary to weld the sand suction hole. Only screws are used to seal the sand suction hole, thereby avoiding damage to the paint in the sealed area. Compared with welding sealing, there is no need to recoat the paint again, and the construction becomes simple, which not only saves costs but also improves work efficiency.

[0051] In the sand suction stage, the sand suction pipe can enter the interior of the steel structure box body through the pipe to suck the remaining sand.

[0052] Specifically, in the preparation stage, welding the side plate to the pipe and welding the side plate to the steel structure specifically includes:

[0053] Pass the pipe through the through hole of the side plate and make the upper end face of the pipe slightly higher than the upper surface of the side plate, so as to facilitate the cover plate to fit more tightly with the steel structure after covering the upper port of the pipe;

[0054] The side plate and the outer periphery of the pipe are respectively subjected to groove welding at the positions corresponding to the upper surface of the side plate and the pipe, and fillet welding at the positions corresponding to the lower surface of the side plate and the pipe. Such a welding method can weld the side plate and the pipe more tightly together, thereby preventing liquids such as rainwater from entering the box through the welding gaps and corroding the box, and having a better waterproof effect;

[0055] The side plate and the steel structure are subjected to fillet welding at the upper surface of the outer edge of the side plate and the lower surface of the steel structure, so that the side plate is more firmly fixed on the steel structure.

[0056] In addition, in the preparation stage, after welding the side plate and the pipe and before welding the side plate and the steel structure, it further includes subjecting the welded side plate and the pipe as a whole to hot-dip galvanizing treatment. After such treatment, the outer surface of the welded side plate and the pipe as a whole and the welding gaps thereof will be covered with a zinc film to form a protective layer, preventing the side plate, the pipe and their welding parts from being corroded, thereby extending the service life of the sand suction hole cover part.

[0057] The sand suction hole cover part and its covering method provided by the present invention, since the side plate is welded to the pipe and the steel structure respectively and participates in the sand washing process and the sand suction process as a whole. After the sand suction is completed, the cover plate is then covered on the upper port of the pipe and fixed to the steel structure by screws to achieve the plugging work of the sand suction hole, avoiding welding plugging of the sand suction hole. On the one hand, the plugging process of the sand suction hole becomes simple and easy for the staff to implement, without the need for special personnel to detect the welding gaps, reducing the workload; on the other hand, it also avoids damage to the paint on the surface of the sealed area and does not require secondary construction to apply paint, saving costs and improving work efficiency; and the outer surfaces of the side plate and the pipe in the sand suction hole cover part are covered with a zinc protection film, avoiding erosion of the side plate and the pipe and extending the service life of the structure; furthermore, the pipe is arranged in a bent shape, which can effectively prevent rainwater from falling into the steel structure box body and avoid the box body being eroded by rainwater, and the ventilation holes on the cover plate also further improve the air permeability of the steel structure box body and improve the construction environment inside the box.

[0058] Although the present invention has been illustrated and described by referring to the embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions without departing from the spirit and scope of the present invention.

Claims

1. A method for covering a sand suction hole, characterized in that, It is used to cover the sand suction hole on the steel structure box body with a sand suction hole cover part. The sand suction hole cover part includes a pipeline, a cover plate covering the upper port of the pipeline, and a side plate fixed to the outer side of the upper part of the pipeline. The pipeline is used as a sand suction pipeline. The cover plate is fixed to the steel structure. The cover plate is provided with a ventilation hole and mounting holes are circumferentially arranged on the outer edge. Screws fix the cover plate to the steel structure through the mounting holes. The pipeline is sealed with the side plate. A through hole is provided in the middle of the side plate, and the diameter of the through hole is equal to the aperture of the sand suction hole. The side plate and the outer surface of the pipeline are covered with a zinc film. The pipeline is a bent pipe; The method includes: The preparation stage: welding the side plate and the pipeline, and welding the side plate and the steel structure; The sand flushing stage: using the pipeline as a whole to perform the sand flushing process; The sand suction stage: sucking sand through the pipeline; The covering stage: covering the cover plate on the upper port of the pipeline and fixing it to the steel structure.

2. The method for covering the sand suction holes according to claim 1, characterized in that, The specific operations of welding the side plate and the pipeline and welding the side plate and the steel structure in the preparation stage are as follows: Let the pipeline extend through the through hole of the side plate and make the upper end face of the pipeline slightly higher than the upper surface of the side plate; Perform groove welding at the positions corresponding to the pipeline on the upper surface of the side plate and fillet welding at the positions corresponding to the pipeline on the lower surface of the side plate for the outer periphery of the side plate and the pipeline respectively; Perform fillet welding between the side plate and the steel structure at the upper surface of the outer edge of the side plate and the lower surface of the steel structure.

3. The method for covering the sand suction holes as claimed in claim 1 or 2, characterized in that, After welding the side plate and the pipeline and before welding the side plate and the steel structure, it further includes: performing hot dip galvanizing treatment on the welded side plate and pipeline as a whole.

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