阅读说明：本技术 一种新型环保集装箱底架及其喷涂工艺 (Novel environment-friendly container underframe and spraying process thereof ) 是由 戴凯 刘彦斌 刘黎华 顾柳柳 于 2020-04-26 设计创作，主要内容包括：本发明公开了一种新型环保集装箱底架,包括底架和地板,底架由两条沿箱长方向排布的侧梁,和垂直于侧梁的若干根横梁连接而成；地板下表面安装设有覆膜层的竹地板,地板与地板采用横向拼缝设计,用地板自攻钉固定；横向拼缝采用榫口对接连接,地板拼缝落在横梁上。一种新型环保集装箱底架喷涂工艺,在箱体二次打砂后进入涂装线,对集装箱底架表面进行高压无气喷涂环保涂料,然后进入烘干房,然后继续对集装箱底架的表面进行高压无气喷涂环保涂料,此环保涂料为水性环氧重防腐涂料,然后进入烘干房,涂装工艺完成,进入下道工序。本发明地板降低了钢材用量,安装方便,也方便了后续集装箱地板的维保,提高了集装箱底架及其地板的使用寿命。(The invention discloses a novel environment-friendly container underframe, which comprises an underframe and a floor, wherein the underframe is formed by connecting two side beams arranged along the length direction of a container and a plurality of cross beams perpendicular to the side beams; the lower surface of the floor is provided with a bamboo floor with a film coating layer, the floor and the floor adopt a transverse splicing seam design and are fixed by floor self-tapping nails; the transverse abutted seams are in butt joint through rabbets, and the floor abutted seams fall on the cross beam. The utility model provides a novel environmental protection container chassis spraying technology, gets into the coating line after box secondary sanding, carries out high-pressure airless spraying environmental protection coating to container chassis surface, then gets into the stoving room, then continues to carry out high-pressure airless spraying environmental protection coating to the surface of container chassis, and this environmental protection coating is waterborne epoxy heavy anti-corrosive paint, then gets into the stoving room, and the coating technology is accomplished, gets into next process. The floor reduces the consumption of steel, is convenient to install, facilitates the maintenance of the subsequent container floor, and prolongs the service life of the container underframe and the floor thereof.)

1. A novel environment-friendly container underframe comprises an underframe and a floor, wherein the underframe is formed by connecting two side beams which are arranged along the length direction of a container and a plurality of cross beams which are perpendicular to the side beams; the method is characterized in that: the floor along the length direction of the box body is in a transverse splicing design, and is fixed on the bottom cross beam by floor nails; the transverse abutted seams are in butt joint through mortises and fall on the cross beam.

2. According to claim 1, the floor laid by the underframe is laid transversely, the length direction of the floor is consistent with the width direction of the box body, and the width direction of the floor is consistent with the length direction of the box body.

3. The novel environment-friendly container underframe as defined in claim 1, wherein the rabbet butt joint is trapezoidal rabbet joint, tooth rabbet joint, hook rabbet lap joint or bevel rabbet joint.

4. The new environmentally friendly container underframe as claimed in claim 1, wherein the cross-sectional shape of the cross-beam of the underframe is uniform.

5. The new environmentally friendly container chassis of claim 3, wherein the inside of said mortise and the upper surface of the chassis beam at the butt joint are provided with a sealant.

6. The new environmentally friendly container chassis of claim 1, wherein said floor nails are in a single row.

7. A new environmentally friendly container chassis according to claim 6, wherein said floor nails are equally numerous on the bottom rail.

8. A new environmentally friendly container chassis according to claim 1, wherein the lower surface of said floor comprises a floor coating layer.

9. The utility model provides a novel environmental protection container chassis spraying technology which characterized in that: entering a coating line after the box body is subjected to secondary sanding, and carrying out treatment on the container bottom frame: carrying out high-pressure airless spraying on the surfaces of the bottom cross beam and the bottom side beam, wherein the environment-friendly coating is water-based environment-friendly epoxy zinc-rich coating with the zinc powder content of 65-90%, the thickness of a dry film is 20-40 microns, and after the spraying is finished, the paint enters a drying room, the temperature of the drying room is 40-70 ℃, the humidity is 35-85%, the wind speed is 1-3 m/s, and the drying time is 10-15 min; and then continuing to move the container chassis: the surfaces of the bottom cross beam and the bottom side beam are subjected to high-pressure airless spraying of an environment-friendly coating, the environment-friendly coating is a water-based epoxy heavy-duty anticorrosive coating, the thickness of a dry film is 50-100 microns, the environment-friendly coating enters a drying room after spraying, the temperature of the drying room is 50-70 ℃, the humidity is 35-85%, the wind speed is 1-3 m/s, and the drying time is 12-20min, then the coating process of the environment-friendly bottom frame of the container is finished, and the next process is carried out.

Technical Field

The invention relates to a novel environment-friendly container underframe.

Background

Referring to fig. 1-4, there is shown a schematic view of the structure of a conventional container chassis.

The underframe of the existing container is formed by assembling a steel underframe and a floor 3, the underframe is divided into two side beams which are arranged along the length direction of the container, a floor middle beam 66 which is arranged at the center of a longitudinal seam 77 of the floor and a plurality of cross beams 88 which are vertical to the side beams are assembled and welded; after the assembly welding of the underframe, the front end, the rear end and the side end and the top plate is finished, the box enters a paint room to be sprayed with outer finish paint and inner finish paint of the box, after the paint is leveled and dried, a wood floor is laid on the steel frame, and the wood floor and the cross beam are fixedly connected by using self-tapping screws.

The cross-members 88 of the chassis of the tank are generally of two types: the floor comprises a conventional cross beam 11 and an elongated cross beam 22, wherein the conventional cross beam 11 is laid on the lower surface of a floor main body, the elongated cross beam is arranged at a floor joint, screws of the conventional cross beam and the floor are generally single-row screws 33 and are small in quantity, the elongated cross beam is nailed into double-row screws 44 and is large in quantity, similarly, as shown in fig. 3, a double-row nailing mode is also selected for a floor lap joint of a longitudinal splicing seam, and mainly the purpose of tightly locking two adjacent floors is achieved, so that the use performance is ensured; present case factory is when drilling the screw hole, because conventional crossbeam adds the screw hole quantity of elongated crossbeam department with the department, the difference of interval and subsection, what adopt is the separately drilling mode, the specified requirement of duplex hole quantity according to guest or screw hole are in order to avoid adding the reinforcing plate 55 of type long crossbeam, the nail is arranged and often can be changed, adopt artifical gun drill at present usually, and conventional crossbeam department screw quantity is fixed, and arrange evenly, adopt full-automatic nailer at present, only need input simple appointed, nailer alright disposable swift, it is convenient, the completion drilling of accuracy again.

And after all the components are assembled, the box body is conveyed to a black paint pit spraying station for spraying asphalt paint. The black asphalt paint film is thick in thickness, and mainly protects the chassis part of the box body, because the box body is used, the chassis is used and works comparatively badly. a. The box bottom is hidden, the sunlight cannot be exposed, when the surface moisture evaporates, the underframe is washed first, or the box body is drenched with rain, and after the box body is soaked by seawater in transportation, the underframe part of the box body is difficult to dry quickly, so that the asphalt paint is required to have good damp-proof, waterproof, antirust and anticorrosive functions so as to protect the most important underframe part of the box; b. the chassis part of the box body is completely black primer, so that important joints are covered by asphalt, and moisture can be prevented from permeating into the box through gaps of the chassis, so that goods in the box are affected with damp, and the goods are lost; c. the box body is often collided in the hoisting and carrying processes at wharfs and construction sites, and the asphalt paint film is thick, so that violent collision can be avoided; d. the case is when land transportation, and the car is when high-speed transportation, and grit splashes often, and thick pitch lacquer membrane is thick, has certain elasticity, can prevent effectively that the grit from to the striking or the wearing and tearing of chassis.

For such important primer portions, many product or manufacturing disadvantages are currently encountered.

Firstly, the existing dry cargo box uses water-based paint, which comprises a chassis asphalt paint part, and after the asphalt black paint is water-based, the overall construction performance is poor, the one-time film forming is low, the drying speed is slow, and the sagging is serious; the universality of the corrosion resistance of the water-based asphalt paint is reduced, and a lot of serious complaints of customers on the quality of the paint of the box bottom are received in the near term; the water-based asphalt paint has serious sagging, especially in rainy days, pollutes factories, and the environment of a pit spraying station is severe; therefore, how to reasonably and specifically use the aqueous base asphalt is an important research topic.

Secondly, in the use of the floor, the use proportion of the bamboo-wood film-coated floor is higher and higher at present, the upper surface and the lower surface of the bamboo-wood floor are basically provided with film layers, nail head paint is coated on nail heads, the periphery of the floor is subjected to glue sealing treatment, and a waterproof effect is achieved. The bottom of the floor is provided with a film coating layer which can play a role of protecting the floor, and the protection of the floor can be equal to that of water-based asphalt paint.

In addition, aiming at the protection of the existing underframe, the problems of steel corrosion prevention of side beams, cross beams and bottom center beams at the bottom of a box and transverse and longitudinal splicing air tightness of all floors of the underframe are only solved; at present, due to the structural solidification design of the floor, the bottom center sill can be seen at the bottom of the box, the bottom center sill is of a flat iron structure and is located in the middle of the box body, the bottom center sill is freely laid along the length direction of the box body and does not need to be welded, and as shown in figure 3, glue is coated on the upper surface of the bottom center sill, so that the sealing performance of the floor along the floor splicing seam of the box length direction is achieved and ensured, and water vapor outside the box or at the bottom of the box is prevented from permeating into the box from the floor splicing seam. However, when a trolley with heavy load is loaded in and unloaded from the box, the bottom center sill is seriously deformed due to concave-down, the time is prolonged, the sealing effect is inevitably influenced, and the water seepage phenomenon is seriously caused.

Therefore, aiming at the problems which appear at present, how to reasonably optimize the box bottom structure and how to solve the problems of sealing defects and the like and how to configure the water-based asphalt paint for use are obviously placed on the table top, the problem of chassis protection can restrict the biggest barrier of green, environment-friendly, sustainable, upgrading and upgrading development of the container, and needs to be fundamentally and reasonably solved.

Disclosure of Invention

In order to solve the technical problems, the invention provides a novel environment-friendly container underframe, which comprises an underframe and a floor, wherein the underframe is formed by connecting two side beams arranged along the length direction of a container and a plurality of cross beams perpendicular to the side beams; the method is characterized in that: the floor along the length direction of the box body is in a transverse splicing design, and is fixed on the bottom cross beam by floor nails; the transverse abutted seams are in butt joint through mortises and fall on the cross beam.

Furthermore, the length direction of the floor is consistent with the width direction of the box body, and the width direction of the floor is consistent with the length direction of the box body.

Furthermore, the rabbet butt joint is trapezoidal rabbet splicing, tooth-shaped rabbet splicing, hook-shaped rabbet lapping and inclined plane rabbet splicing.

Further, the cross-sectional shapes of the cross beams of all the underframe are consistent.

Furthermore, sealant is arranged inside the rabbet and on the upper surface of the cross beam of the underframe at the butt joint position.

Further, the floor nails are in a single row.

Furthermore, the number of the floor nails on the bottom cross beam is equal.

Further, the lower surface of the floor panel includes a floor panel coating layer.

Further, the most preferable mode of the tenon butt joint is a trapezoidal lap joint structure.

The utility model provides a novel environmental protection container chassis spraying technology, gets into the coating line after box secondary sanding, to the container chassis: carrying out high-pressure airless spraying on the surfaces of the bottom cross beam and the bottom side beam, wherein the environment-friendly coating is water-based environment-friendly epoxy zinc-rich coating with the zinc powder content of 65-90%, the thickness of a dry film is 20-40 microns, and after the spraying is finished, the paint enters a drying room, the temperature of the drying room is 40-70 ℃, the humidity is 35-85%, the wind speed is 1-3 m/s, and the drying time is 10-15 min; and then continuing to move the container chassis: the surfaces of the bottom cross beam and the bottom side beam are subjected to high-pressure airless spraying of an environment-friendly coating, the environment-friendly coating is a water-based epoxy heavy-duty anticorrosive coating, the thickness of a dry film is 50-100 microns, the environment-friendly coating enters a drying room after spraying, the temperature of the drying room is 50-70 ℃, the humidity is 35-85%, the wind speed is 1-3 m/s, and the drying time is 12-20min, then the coating process of the environment-friendly bottom frame of the container is finished, and the next process is carried out.

The floor reduces the consumption of steel, is convenient to install, facilitates the maintenance of the subsequent container floor, and prolongs the service life of the container underframe and the floor thereof. The lower surface of the floor adopts a bamboo floor covered with a film to protect the floor surface.

Drawings

FIG. 1 is a conventional box-type underframe cross beam, floor, nailing arrangement.

FIG. 2 is a schematic view of the connection between the conventional box-type elongated beam and the double rows of floor nails at the joint of the floor.

Fig. 3 is a schematic view of a conventional box-type beam and a floor by screw connection.

FIG. 4 is a schematic diagram of a conventional box-type floor center sill placed in the center of a longitudinal seam of a floor, wherein a sealant is applied to the upper surface of the center sill before pre-assembly, and the center sill is tightly attached to a tongue-and-groove after assembly.

FIG. 5 is a schematic view of the structure of the present invention.

FIG. 6 is a schematic view of a trapezoidal mortise structure according to the present invention.

FIG. 7 is a schematic view of a trapezoidal mortise connection according to the present invention.

FIG. 8 is a view showing the cleavage of the dovetail of the present invention.

FIG. 9 is a schematic view of the tooth-shaped mortise structure according to the present invention.

FIG. 10 is a schematic view of a dovetail connection according to the present invention.

FIG. 11 is a view showing the tooth-shaped mortise according to the present invention.

FIG. 12 is a schematic view of a hook-shaped rabbet structure of the invention.

FIG. 13 is a schematic view of a hook-type mortise joint according to the present invention.

FIG. 14 is a diagram of the present invention showing the cracking of the hook-type rabbet.

FIG. 15 is a schematic view of another embodiment of the present invention.

FIG. 16 is a schematic view of another alternative embodiment of a hook-type mortise joint according to the present invention.

Fig. 17 is a fragmentary view of another form of the present invention showing a hook-type rabbet joint.

FIG. 18 is a schematic view of the bevel mortise structure according to the present invention.

FIG. 19 is a schematic view of a bevel mortise connection according to the present invention.

FIG. 20 is a fragmentary view of the beveled mortise of the present invention.

Fig. 21 is a process flow diagram of a novel environment-friendly container underframe.

In the figure, 1, a side beam, 2, a cross beam, 3, a floor, 4, a self-tapping nail of the floor, 5, a transverse splicing seam, 6, a trapezoidal rabbet, 7, a tooth rabbet, 8, a hook rabbet and 9, an inclined plane rabbet are arranged.

Detailed Description

As shown in fig. 5, the novel environment-friendly container underframe comprises an underframe and a floor 3, wherein the underframe is formed by connecting two side beams 1 which are arranged along the length direction of a container and a plurality of cross beams 2 which are perpendicular to the side beams 1; the lower surface of the floor 3 is provided with a bamboo floor with a film coating layer, and the floor 3 is designed by adopting transverse splicing. The transverse abutted seam 5 is in butt joint with a rabbet, and is fixed on the beam 2 by a floor tapping screw 4. The joints of the floor 3 are dropped on the cross beams 2.

The upper surface of the beam 2 is pre-coated with sealant, so that the sealing performance is protected doubly.

The rabbet butt joint is formed by splicing the trapezoid rabbets 6 in figures 6-8, splicing the tooth-shaped rabbets 7 in figures 9-11, overlapping the hook-shaped rabbets 8 in figures 12-14 and 15-17, and splicing the bevel rabbets 9 in figures 18-20.

The floor tenon butt joint structure has better sealing performance. Adopt the mortise butt joint, floor self-tapping nail 4 is the single row, has reduced nailing quantity, and the quantity of the floor nail of every row of crossbeam can be for the customization, and the use of the automatic nailing machine of on-line of being convenient for reduces the labour cost, improves mechanized operation, improves production efficiency.

Preferably, the trapezoidal rabbet 6 splicing design shown in fig. 6-8 is convenient for manufacturers, factory floor installation and subsequent maintenance of the container floor.

The invention rearranges the floor 3, cancels the longitudinal seam, cancels the floor center sill along the box length direction, omits the structure of a floor center sill, reduces the types of bottom cross beams, omits the broadside bottom cross beams and reduces the consumption of steel. The middle beam of the floor is omitted, and the using amount of the sealant is reduced; the container underframe has no floor middle beam, saves longitudinal seam splicing seams, has better overall strength, and prolongs the service life of the container underframe and the floor thereof.

The floor 3 is not divided into left and right, the number of the floor 3 is reduced, the types of the floor 3 are reduced, and the supply and the preparation are convenient. In addition, the lower surface of the floor 3 is provided with the bamboo floor with the film coating layer to protect the floor surface, and the underframe only needs to spray asphalt paint on the steel structure part to meet the use requirement of the container body, so that the use amount of the asphalt paint is greatly reduced; the working environment of workers is improved, the sagging pollution of the water-based bottom asphalt is reduced, and the probability of poor spraying quality of the bottom asphalt is reduced.

As shown in fig. 21, a novel environment-friendly container chassis spraying process enters a coating line after the secondary sanding of the container body, and is used for the container chassis: carrying out high-pressure airless spraying on the surfaces of the bottom cross beam and the bottom side beam, wherein the environment-friendly coating is water-based environment-friendly epoxy zinc-rich coating with the zinc powder content of 65-90%, the thickness of a dry film is 20-40 microns, and after the spraying is finished, the paint enters a drying room, the temperature of the drying room is 40-70 ℃, the humidity is 35-85%, the wind speed is 1-3 m/s, and the drying time is 10-15 min; and then continuing to move the container chassis: the surface of the bottom cross beam and the bottom side beam is subjected to high-pressure airless spraying of an environment-friendly coating, the special coating for the bottom frame is a water-based epoxy heavy-duty anticorrosive coating, the thickness of a dry film is 50-100 micrometers, the environment-friendly coating enters a drying room after spraying is finished, the temperature of the drying room is 50-70 ℃, the humidity is 35-85%, the wind speed is 1-3 m/s, the drying time is 12-20min, then the environment-friendly bottom frame coating process of the container is finished, the next procedure is carried out, finish coating of finish paint outside the container is carried out, after drying and discharging the container, glue is coated, a bottom plate is laid, a bottom plate is scribed and drilled, then screws are.

The water-thinned epoxy zinc-rich paint consists of epoxy resin, ethyl silicate and zinc powder as main material, thickener, assistant and water.