CN104016025A - Rack box bottom side beam, manufacturing method thereof and method for manufacturing rack box - Google Patents

Abstract

The bottom side beams of the bench box and the manufacturing method thereof, and the manufacturing method of the bench box, the manufacturing method includes: making a web plate with a corrugated longitudinal direction; placing the upper wing plate, the lower wing plate and the web plate of the bottom side beam on the support platform, And place the web between the upper and lower wings for positioning to form the initial blank of the bottom side beam, so that the web, upper and lower wings are in the shape of an I; the support is supported by multiple oil cylinders on the fixed support platform. Push the lower wing plate, and make the bottom side sill initial body bend from the lower wing plate to the upper wing plate until the upper wing plate is close to a plurality of stoppers with the first preset camber fixed on the support platform, so that the bottom side sill initial The blank reaches the first preset camber; the upper wing plate and the lower wing plate are respectively welded to the web, so as to manufacture the platform box bottom side beam with the second preset camber. The invention increases the elasticity of the web by making the web into a corrugated structure, so that the entire bottom side beam blank is clamped by both sides and then bent to form a camber, thereby improving production efficiency and product quality, and reducing cost.

Description

Bench box bottom side beam and manufacturing method thereof, and manufacturing method of bench box

technical field

The invention relates to a container, in particular to a platform box bottom side beam and a manufacturing method thereof, and a manufacturing method of the platform box.

Background technique

In the field of containers, bench boxes are widely used because of their convenient loading and unloading and heavy load; bench boxes can generally be divided into folded-end bench boxes and fixed-end bench boxes.

As shown in Figure 1, the components of a general folding container mainly include an underframe 2' and end walls 1' arranged at both ends of the underframe platform; as shown in Figure 2, the underframe 2' includes bottom side beams on both sides 21', the bottom beam 22' fixedly connected laterally between the two bottom side beams, and the end beam bodies 23' arranged at both ends thereof.

In the prior art, in order to increase loading capacity and durability, the bottom side beams are usually designed to have an upward camber, as shown in Figures 3 and 4, the bottom side beams 21' of this underframe 2' are made of An I-beam formed by welding the upper wing plate 211', the lower wing plate 212' and the web plate 213'. As shown in Figure 3, since the web of the bottom side beam is a long flat plate with an upward camber, the entire underframe has an upward camber. In addition, in order to increase the loading capacity and save materials, the upper and lower wings of the bottom side beam are designed to be wide and thick, and the web of the bottom side beam is made of thinner sheets.

For this technical solution in the prior art, as shown in Figure 5, since the web of the bottom side beam has a large camber (generally about 50mm to 80mm), the width of the raw material for making the web must be greater than the width of the web Adding the sum of camber, the web needs to be processed by a large CNC plasma (or flame) cutting machine. Therefore, there are more leftovers produced by making the web, the efficiency of making the web is low, and the cost of making the web is relatively high. In addition, because the upper and lower wings of the bottom side beam of the I-shaped section are thick and wide, and the web is thin, the structural stability of the bottom side beam section is poor, and the web is easy to lose stability and cause damage to the bottom side beam.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art, and propose a platform box bottom side beam and its manufacturing method, and a manufacturing method of the platform box, which can improve production efficiency and product quality and reduce costs.

In order to solve the above-mentioned technical problems, the present invention proposes a method for manufacturing the side beams at the bottom of the platform box. The plate, the lower wing plate and the web completed in step S1 are placed on the support platform, and the web is placed between the upper wing plate and the lower wing plate for positioning to form the bottom side sill embryo, so that the web, upper wing The plate and the lower wing are I-shaped; Step S3: Press the lower wing with multiple oil cylinders on the fixed support platform, and make the bottom side beam blank move from the lower wing to the upper wing The plate is bent until the upper wing plate is in close contact with a plurality of stoppers with a first preset camber fixed on the support platform, so that the bottom side beam blank reaches a first preset camber; step S4 : Welding the upper flange and the lower flange to the web respectively, so as to obtain the side girder at the bottom of the platform box with the second preset camber.

Preferably, step S1 includes: making a web with a predetermined width; making a web with a corrugated shape in the longitudinal direction.

Preferably, before step S3, the manufacturing method of the frame box bottom side beam further includes: performing spot welding at the center of the bottom side beam blank and/or at both ends of the bottom side beam.

Preferably, before step S3, the method further includes: adjusting the position of each stop in the plurality of stops, so that the stops form a first preset camber.

Preferably, step S4 includes: welding the upper flange and the lower flange respectively to the web by means of co-directional, synchronous and symmetrical welding.

Preferably, the first preset crown is 50mm-80mm or 15mm-45mm, and the second preset crown is 40mm-65mm or 10mm-30mm.

Preferably, when the first preset crown is 50mm-80mm and the second preset crown is 40mm-65mm, there are at least five oil cylinders and stoppers.

Preferably, when the first preset crown is 15mm-45mm and the second preset crown is 10mm-30mm, there are at least three oil cylinders and stoppers.

The present invention also provides a manufacturing method of the bench box, which includes the above-mentioned manufacturing method of the bottom and side beams of the bench box.

The present invention also provides a platform box bottom side beam, which includes: an upper wing plate, a lower wing plate and a web connecting the upper wing plate and the lower wing plate, the bottom side beam is I-shaped, and the longitudinal direction of the web plate is Corrugated shape, the bottom side beam is bent from the lower flange to the upper flange to form the second preset camber, the second preset camber is 40mm~65mm or 10mm~30mm.

Compared with the prior art, the beneficial effects of the present invention include: the present invention increases the elasticity of the web by making the web into a corrugated structure, so that the entire bottom side beam blank is bent to form a camber after being clamped by both sides, Therefore, the width of the web is the width of the raw material, so there is no need for cutting processing, which improves production efficiency and product quality, and does not produce leftovers to reduce costs. At the same time, the corrugated web increases the stability of the bottom side beam Sex, so that the web can be made of thinner material to reduce costs.

Description of drawings

Fig. 1 is a structural schematic diagram of a bench box in the prior art.

Fig. 2 is a structural schematic diagram of the underframe of the bench box in the prior art.

Fig. 3 is a side view of a bench box made in the prior art.

Fig. 4 is a sectional view of the box bottom side beam of the prior art platform.

Fig. 5 is a schematic diagram of the web structure of the bottom side beam in the prior art.

Fig. 6 is a flow chart of a manufacturing method of the box bottom side beam of the platform according to the present invention.

Fig. 7 is a schematic diagram of the structure of the web of the bottom side beam before processing according to the present invention.

Fig. 8 is a schematic diagram of the processed bottom side beam web according to the present invention.

Figure 9 is a top view of Figure 8;

Fig. 10 is a cross-sectional view of the box bottom side beam of the platform of the present invention.

Fig. 11 is a schematic view showing before the bottom side beam blank is clamped from both sides.

Fig. 12 is a schematic diagram reflecting the clamping of the bottom side beam blank from both sides.

Fig. 13 is a schematic view along the direction A of Fig. 12 .

Fig. 14 is a structural schematic diagram of the bottom side beam.

Description of drawings: end wall 1', underframe 2', bottom side beams (21', 21), bottom beam 22', end beam body 23', upper wing plate (211', 211), lower wing plate (212' , 212), web (213', 213), block 3, oil cylinder 4 and support table 5.

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. 6, the present invention provides a method for manufacturing the side girder of the box bottom of the platform. The manufacturing method includes: step S1, making a web with a corrugated longitudinal direction; in this embodiment, step S1 includes step S11: making a pre- Assume a web with a width a; step S12: making a web with a corrugated longitudinal direction.

As shown in FIG. 7 , FIG. 8 and FIG. 9 , the longitudinal direction of the web 213 is corrugated. In this embodiment, the web 213 can be produced by cutting. Compared with processing by large-scale CNC plasma (or flame) cutting machine in the prior art, the advantage of using shearing method is that it can avoid the generation of scraps, thereby saving costs, and shearing processing is much simpler and more convenient than cutting machine processing. The production efficiency of the web 213 can be greatly improved. In other embodiments, the web 213 can be made by other methods, such as stamping or mold forming, as long as the web 213 can be made in the shape of longitudinal corrugation.

Step S2: Place the upper and lower flanges of the bottom side beam and the web completed in step S1 on the support platform, and place the web between the upper and lower flanges for positioning to form the bottom side The initial beam makes the web, upper wing and lower wing be I-shaped.

As shown in Figure 10, the cross section of the bottom side beam 21 is I-shaped, so in this embodiment, in step S2, the web 213, the upper flange 211 and the lower flange 212 need to be pre-assembled into a An I-beam shape, and symmetrical about the center. The function of positioning is to determine the relative position relationship between the upper wing plate 211 , the lower wing plate 212 and the web plate 213 .

As shown in Figure 13, the bottom side beam blank is placed on the support table for positioning.

Step S3: Press the lower wing plate against the oil cylinder on the fixed support platform, and bend the bottom side sill blank from the lower wing plate to the upper wing plate until the upper wing plate is tightly fixed on the The stopper on the support platform makes the bottom side beam blank reach the first preset camber.

Please refer to Fig. 11, Fig. 12 and Fig. 13, in this embodiment, the upper wing plate 211 and a plurality of oil cylinders 4 are pressed against the lower wing plate 212 by a group of stoppers 3, and the upper wing plate 211 and the lower wing plate 212 are Clamp. The oil cylinder 4 and the block 3 are all fixed on the support platform 5, the block 3 is a bow-shaped block, a group of bow-shaped blocks form a camber, and a plurality of oil cylinders 4 bear against the lower wing plate 212, because the web 213 is elastic The corrugated shape of the bottom side sill will make the entire bottom side sill blank, and make the upper wing plate 211 close to the stopper 3, so that the first preset camber b of the bottom side sill blank and the first arched stopper 3 formed A preset camber b is the same. In other embodiments, the block 3 can be replaced by other tools to play the role of clamping the blank of the bottom side beam, for example, an arc-shaped baffle and the like. The oil cylinder 4 can also be replaced with other tools, for example, a manually rotating jack or the like.

In this embodiment, before step S3, it also includes: performing spot welding at the center of the bottom side beam blank and/or at the two ends of the bottom side beam. The function of spot welding is to prevent the camber from deviating from the center position of the bottom side beam during preloading.

In this embodiment, before the step S3, the position of each stopper 3 in a group of stoppers 3 is adjusted, so that the stoppers 3 form the first preset camber b. The function of this step is to adjust the first preset crown b. When the staff needs to change the first preset crown b of the bottom side beam blank, the staff can adjust the position of each stopper 3 accordingly to form a new first preset crown b. The value of the first preset camber b is mainly determined by the design load. For a folding box with a length of 40 feet, the value of the preset camber is 50mm~80mm; for a folding box with a length of 20 feet, the preset camber The value of b is between 15mm and 45mm. According to other requirements in specific production or use, the value of the first preset crown b can also be changed accordingly. In other embodiments, if a curved baffle is used, the first preset camber b can be adjusted by replacing the curved baffle with a different camber.

The specific number of stoppers 3 and oil cylinders 4 can also be adjusted according to the length of the bottom side beam. For a folding box with a length of 40 feet, the number of stoppers 3 and corresponding oil cylinders 4 should be at least five pieces, and the relative bottom side beam 21 symmetrical distribution of the center; for a folding box with a length of 20 feet, the number of stoppers 3 and corresponding oil cylinders 4 is at least three, and the distribution is symmetrical relative to the center of the bottom side beam 21.

Step S4: Welding the upper flange and the lower flange to the web respectively, so as to obtain the side girder at the bottom of the platform box with the second preset camber;

In this embodiment, the upper flange 211 and the lower flange 212 are respectively welded to the web 213 in the same direction, synchronously and symmetrically. The same direction, synchronization and symmetry mean that when welding the upper and lower flanges and the web 213, the weld beads on both sides of the web 213 need to be welded synchronously, in the same direction, and symmetrically. This welding method can avoid uneven welding stress and The resulting post-weld strain, thereby reducing the side bending of the girder. Since the corrugated bottom side beam web 213 is constrained after welding with the upper wing plate 211 and the lower wing plate 212, the elasticity produced by the original corrugated shape disappears, and the bottom side beam 21 becomes a rigid beam body, so after welding The bottom side beam 21 will not easily be elastically deformed due to external force. Moreover, due to the welding stress, the second preset crown c of the formed bottom side beam 21 will be smaller than the first preset crown b, and when the first preset crown b is 50 mm to 80 mm, the second preset crown b after welding The second preset crown c is 40mm~65mm, when the first preset crown b is 15mm~45mm, the second preset crown c after welding is 10mm~30mm, and the crown will be correspondingly smaller, so in The amount of variation needs to be considered when choosing a preset crown.

The present invention also provides a manufacturing method of the bench box, which includes the above-mentioned manufacturing method of the bottom and side beams of the bench box.

The manufacturing process of the gantry box directly adopts the above-mentioned manufacturing method to direct the bottom side beams.

The present invention also provides a platform box bottom side beam 21, referring to Fig. 7 to Fig. 14, the platform box bottom side beam 21 includes: an upper wing plate 211, a lower wing plate 212 and a connecting link between the upper wing plate 211 and the lower wing plate 212 The web 213, the bottom side beam 21 is I-shaped, the longitudinal direction of the web 213 is corrugated, the bottom side beam 21 is bent by the lower wing plate 211 to the upper wing plate 212 to form a second preset camber, the second preset camber 40mm~65mm or 10mm~30mm.

The principle of the present invention will be described in detail below by taking this embodiment as an example.

Firstly, the corrugated web 213 is deformed by applying pressure to produce camber, so the width a of the web 213 is the same as that of the raw material, which avoids cutting operations and produces no leftovers.

Secondly, the bottom side beam blank is pressed against one side through the cylinder 4, and the stopper 3 blocks the other side, thereby fixing the bottom side beam blank, and the bottom side beam blank is bent to fit the stopper due to the cylinder 4 abutting against the top. block 3, so that the camber b of the bottom side beam initial blank is the same as the camber b of the stopper 3, so by adjusting the position of the stopper 3, the camber b of the bottom side beam blank can be easily adjusted, thus obtaining the first A bottom side beam blank with a preset crown b.

Finally, the fabrication of the bottom side beam 21 is completed by welding, and at this time, the bottom side beam 21 reaches the second preset camber c due to the welding stress.

To sum up, the present invention increases the elasticity of the web by making the web into a corrugated structure, so that the entire bottom side beam blank is clamped by both sides and then bent to form a camber, so the width of the web is the width of the raw material. width, so there is no need for cutting processing, which improves production efficiency and product quality, and does not produce leftovers to reduce costs. At the same time, the corrugated web increases the stability of the bottom side beam, so that the web can be used more Thin material to reduce cost.

The above descriptions are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly used in other related technical fields, is also included in the scope of patent protection of the present invention.

Claims (10)

1. A method for making side beams at the bottom of a platform box, characterized in that, the method for making comprises: Step S1: making a web with a corrugated longitudinal direction; Step S2: Place the upper and lower flanges of the bottom side beam and the web completed in step S1 on the support platform, and place the web between the upper and lower flanges for positioning and forming Bottom and side beam blanks, so that the web, upper wing and lower wing are I-shaped; Step S3: Using a plurality of oil cylinders on the fixed support platform to push against the lower wing, and make the bottom side sill blank bend from the lower wing to the upper wing until the upper wing is in close contact with the upper wing A plurality of stoppers with a first preset crown fixed on the support platform, so that the bottom side beam blank reaches the first preset crown; Step S4: welding the upper flange and the lower flange to the web respectively, so as to manufacture the side girder of the platform box bottom with a second preset camber. 2. The manufacturing method of the platform box bottom side beam according to claim 1, characterized in that, step S1 comprises: Make webs with preset widths; Make a web with a corrugated shape longitudinally. 3. The manufacturing method of the platform box bottom side beam according to claim 1, characterized in that, before step S3, the manufacturing method of the platform box bottom side beam further comprises: at the center position of the bottom side beam blank and/or Or perform spot welding at both ends of the bottom side beam. 4. The method for manufacturing the side beams at the bottom of the platform box according to claim 1, further comprising: adjusting the position of each of the stoppers in the plurality of stoppers before step S3, so that the stoppers A first preset crown is formed. 5. The manufacturing method of the box bottom side beam of the platform according to claim 1, characterized in that, step S4 comprises: adopting the same direction, synchronous and symmetrical welding to weld the upper wing plate and the lower wing plate respectively on the Web welding. 6. The method for manufacturing the side beams at the bottom of the gantry box according to claim 1, wherein the first preset crown is 50 mm to 80 mm or 15 mm to 45 mm, and the second preset crown is 40 mm to 45 mm. 65mm or 10mm~30mm. 7. The method for manufacturing the side beams at the bottom of the gantry box according to claim 6, wherein when the first preset camber is 50 mm to 80 mm and the second preset camber is 40 mm to 65 mm, There are at least five oil cylinders and stoppers. 8. The method for manufacturing the side beams at the bottom of the gantry box according to claim 6, characterized in that, when the first preset camber is 15 mm to 45 mm and the second preset camber is 10 mm to 30 mm, There are at least three oil cylinders and stoppers. 9. A manufacturing method of a bench box, characterized in that the manufacturing method of the bench box comprises the manufacturing method of the bottom side beam of the bench box according to any one of claims 1-8. 10. A platform box bottom side beam, characterized in that, the platform box bottom side beam comprises: an upper wing plate, a lower wing plate and a web connecting the upper wing plate and the lower wing plate, and the bottom side beam is in the form of an industrial font, the longitudinal direction of the web is corrugated, the bottom side beam is bent from the lower wing to the upper wing to form a second preset crown, and the second preset crown is 40mm~65mm or 10mm~30mm .