CN104709625B - Container and its steel floor chassis - Google Patents

Abstract

A container and its steel floor underframe, the underframe includes a steel floor, bottom side beams located on both lateral sides of the steel floor, and a plurality of bottom beams arranged longitudinally under the steel floor and fixedly connected to the steel floor, the bottom beams The two ends are respectively fixedly connected with the two bottom side beams. The steel floor includes a floor main body, a first bending edge bent upward from both sides of the floor main body, and a second bending edge vertically outwardly bent from the upper end of the first bending edge The main body of the floor is provided with strip-shaped and upwardly protruding reinforcing ribs, and the reinforcing ribs are distributed in the transverse direction of the main body of the floor; the height of the first bending edge is greater than the height of the reinforcing ribs, and the upper surface of the second bending edge For fixing to container side panels. The invention can reduce welding deformation, has high strength, small dead weight, low cost, high processing efficiency and high product reliability.

Description

Container and its steel floor chassis

technical field

The invention relates to the field of containers, in particular to a container steel floor underframe and a container using the steel floor underframe.

Background technique

Common dry container chassis structures are mainly divided into two types. One is that the bottom side beams and bottom beams are welded into a steel structure, and then the wooden floor is screwed to the bottom beams. This structure is currently the most widely used container bottom. Frame structure, but this structure has the following disadvantages: (1) It needs to use a large number of floor nails to connect with the bottom beam. After drilling, arranging nails, locking nails and cleaning, the process is complicated and the labor cost is high. (2) The wooden floor and the bottom beam are connected at points. The floor and the bottom beam cannot be an integral force-bearing member. The moment of inertia and bending section coefficient of the bottom beam are relatively low. The deformation of the bottom beam is large during use, and the floor is easily damaged. , There are problems such as jumping nails, slipping wires, delamination, cracking or even breaking.

In order to avoid the disadvantages of the wooden floor chassis, another form of the chassis structure is to use a conventional steel floor to replace the wooden floor, and its chassis is similar to that of the wooden floor chassis. It is welded with the bottom side beams 2a on both sides, the front lower beams and sills at both ends, and the bottom cross beam 3a below. There are many areas to be welded. The welds between the steel floor and the bottom side beams are located in the container, which is inconvenient for sand blasting and high in manufacturing efficiency. Low, steel floors are also prone to welding deformation. In order to ensure the strength of the floor and reduce welding deformation, the thickness of the steel floor is relatively thick, generally 4mm~6mm, resulting in high cost and heavy weight of the steel floor chassis.

Contents of the invention

The invention provides a container steel floor underframe and a container using the steel floor underframe to solve the problems of low manufacturing efficiency, high cost and easy deformation of the existing steel floor underframe.

In order to solve the above technical problems, the present invention proposes a container steel floor chassis, which includes a steel floor, bottom side beams located on both lateral sides of the steel floor, and multiple bottom beams arranged longitudinally below the steel floor and fixedly connected to the steel floor. The two ends of the bottom beam are respectively fixedly connected with the two bottom side beams, and the steel floor includes a floor body, a first bending edge bent upward from both sides of the floor body, and a vertically outward bending edge from the upper end of the first bending edge. The second bending edge of the bend; the floor body is provided with strip-shaped reinforcing ribs protruding upwards in the longitudinal direction, and there are many reinforcing ribs distributed in the transverse direction of the floor body; the height of the first bending edge is greater than the The height of the reinforcing rib is mentioned above, and the upper surface of the second bending edge is used for fixing with the side plate of the container.

Wherein, the bottom side beam is fixedly connected to the lower surface of the floor main body, and the connection position of the bottom side beam is spaced from the first bending edge.

Wherein, the interval is greater than the thickness of the steel floor.

Wherein, both the first bending edge and the second bending edge are flat.

Wherein, a reinforcement structure is also provided on the first bending edge.

Wherein, the distance between two adjacent reinforcing ribs is greater than the width of the reinforcing ribs.

Wherein, the height of the reinforcing rib is 5mm-25mm.

Wherein, the thickness of the steel floor is less than 4mm.

Wherein, the thickness of the steel floor is 3.2mm~3.5mm.

The present invention also provides a container, comprising a bottom frame and side plates fixedly connected to both sides of the bottom frame, the bottom frame is the steel floor bottom frame as described above, and the side plates are connected to the second bending edge The surface is welded and fixed.

Compared with the prior art, the present invention has the following beneficial effects: 1. The bottom side beam is welded under the steel floor, and the side of the steel floor has an upward bending edge, so the welding of the bottom side beam and the steel floor will not A wavy deformation structure is formed on the floor, which effectively resists welding deformation; 2. The setting of the first bending edge increases the height of the side and improves the strength, which can make up for the weakening of the strength caused by the reduction of the thickness of the plate. In addition, the steel floor is set The reinforced rib also plays a role in improving the strength and rigidity, so the thickness of the steel floor can be reduced on the basis of ensuring the strength of the steel floor, the weight of the steel floor can be reduced, and the cost of steel can be saved; 3. The welding of the bottom side beam and the steel floor The welding seam and the welding seam between the steel floor and the container side plate can be located outside the container box, which is convenient for sand blasting and cleaning, improves processing efficiency, and reduces labor costs; 4. The first bending edge is higher than the reinforcing rib, that is, the container The installation height of the side panels is greater than the height of the reinforcing ribs. When the container with the bottom frame is loaded with goods, it can avoid the impact of the goods directly on the side panels and improve the product reliability of the container.

Description of drawings

Fig. 1 is a structural schematic diagram of a steel floor chassis in the prior art.

Fig. 2 is a structural schematic diagram of an embodiment of the container steel floor underframe of the present invention.

Fig. 3 is a partial view of the other side of the structure in Fig. 2 of the present invention.

Fig. 4 is a partially enlarged schematic diagram of A in Fig. 3 of the present invention.

Wherein, reference signs are explained as follows: 1. Steel floor; 11. Floor main body; 111. Reinforcing rib; 12. First bending edge; 13. Second bending edge; 2. Bottom side beam; 3. Bottom beam.

Detailed ways

In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Please refer to Fig. 2 to Fig. 4, the present invention provides a container steel floor chassis, including steel floor 1, bottom side beam 2 and bottom cross beam 3; 2 The whole is located under the floor main body 11, and its height is smaller than that of the existing structure shown in Fig. The outer side of the steel floor 1; the bottom crossbeam 3 is also located under the steel floor 1, and there are many longitudinally spaced rows along the steel floor 1; the upper end of the bottom crossbeam 3 is welded and fixed to the lower surface of the steel floor 1; Weld and fix with two bottom side beams 2 respectively.

The steel floor 1 includes a floor main body 11, a first bending edge 12 bent upward from both sides of the floor main body 11, and a second bending edge 13 vertically outwardly bent from the upper end of the first bending edge 12. The floor main body 11, The first bending edge 12 and the second bending edge 13 are integrally formed. The floor main body 11 is generally in the shape of a flat plate, but there are strip-shaped and upwardly protruding reinforcing ribs 111 on it, and there are multiple reinforcing ribs 111 distributed in the transverse direction of the floor main body 11 . Preferably, the height h2 of the reinforcing ribs 111 is 5 mm to 25 mm; the distance w1 between two adjacent reinforcing ribs 111 is greater than the width w2 of the reinforcing ribs 111, so that the welding length of the steel floor 1 and the bottom beam 3 accounts for 50% of the total width of the steel floor The above ensures that the steel floor and the bottom beam constitute an integral force-bearing part, improving the load-bearing capacity. The height h1 of the first bending edge 12 is greater than the height h2 of the reinforcing rib 111, and the upper surface of the second bending edge 13 is used for welding and fixing with the side plate of the container. Weld seam treatment: Since the installation position of the side plate of the container is higher than the reinforcing rib 111, the steel floor chassis used in the container can prevent the goods from directly impacting the side plate and improve product reliability.

The bottom side beam 2 is fixed to the lower surface of the floor main body 11 by welding, and there is an interval d1 between the welding position of the bottom side beam 2 and the first bending edge 12 , preferably, the interval d1 is greater than the thickness of the steel floor 1 . Due to the setting of the first bending edge 12, the side edge of the steel floor 1 is a non-free edge, so it can resist welding deformation. The weld seam welded between the bottom side beam 2 and the floor main body 11 is located outside the container box, which can also facilitate sand blasting and sand cleaning of the weld seam. Preferably, the connection between the steel floor, the bottom side beam and the bottom cross beam in the present invention is welded, and the fixing is reliable; in other embodiments, riveting, screws, etc. can also be used to fix the connection.

In the steel floor underframe of the present invention, the strength of the steel floor is effectively improved due to the setting of the first bending edge and the reinforcing rib, so on the basis of ensuring the strength, the thickness of the steel floor can be reduced, and the thickness of the steel floor 1 can be It is set to be less than 4mm, preferably between 3.2mm~3.5mm, and the thickness is thinner compared with the prior art, which saves steel cost and reduces the weight of the steel floor chassis. The thickness of the bottom side beam 2 and the bottom cross beam 3 can be set to be unequal to the thickness of the steel floor according to the strength requirement, for example, the same 4.5mm steel material as the existing structure can be used.

In this embodiment, both the first bending edge 12 and the second bending edge 13 are in the shape of a flat plate, which can be directly bent and formed with the floor main body 11 . In other implementations, reinforcing structures, such as reinforcing ribs and bent structures, may also be provided on the first bending edge 12 , which is suitable for situations where the height of the first bending edge 12 is relatively large.

The present invention also provides a container adopting the above-mentioned steel floor chassis. Side panels are arranged on both sides of the steel floor chassis, and the side panels are welded and fixed to the upper surface of the second bending edge of the steel floor. Wherein, preferably, the welding seam between the side plate and the second bending edge is located outside the box, so as to facilitate the processing of the welding seam.

The above are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. All equivalent structural changes made by using the description and drawings of the present invention are included in the protection scope of the present invention.

Claims (8)

1. A container steel floor chassis, comprising a steel floor, bottom side beams positioned on both sides of the steel floor, and a plurality of bottom beams arranged longitudinally below the steel floor and fixedly connected to the steel floor, the two ends of the bottom beam They are respectively fixedly connected with the two bottom side beams, and are characterized in that: The steel floor includes a floor main body, a first bending edge bent upward from both sides of the floor main body, and a second bending edge vertically outwardly bent from the upper end of the first bending edge; the floor main body is provided with a longitudinal Strip-shaped and upwardly protruding reinforcing ribs, and there are multiple reinforcing ribs distributed in the transverse direction of the floor main body; the height of the first bending edge is greater than the height of the reinforcing rib, and the upper surface of the second bending edge is used It is fixed to the side plate of the container; the bottom side beam is welded and fixedly connected to the lower surface of the floor main body, and there is an interval between the welding position of the bottom side beam and the first bending edge, and the interval is larger than the The thickness of the steel floor. 2. The container steel floor underframe according to claim 1, characterized in that: the first bending edge and the second bending edge are flat plates. 3. The container steel floor underframe according to claim 1, wherein a reinforcing structure is further provided on the first bending edge. 4. The container steel floor chassis according to any one of claims 1-3, wherein the distance between two adjacent reinforcing ribs is greater than the width of the reinforcing ribs. 5. The container steel floor underframe according to any one of claims 1-3, characterized in that: the height of the reinforcing ribs is 5mm-25mm. 6. The container steel floor chassis according to any one of claims 1-3, characterized in that: the thickness of the steel floor is less than 4mm. 7. The container steel floor underframe according to claim 6, characterized in that: the thickness of the steel floor is 3.2mm-3.5mm. 8. A container, comprising an underframe and side panels fixedly connected to both sides of the underframe, characterized in that: the underframe is the steel floor underframe according to any one of claims 1-7, and the side panels It is welded and fixed with the upper surface of the second bending edge.