Dumper sideboard structure

Abstract

The utility model discloses a dumper sideboard structure which comprises a sideboard body made of NM450 materials, at least two wedge-shaped grooves protruding outwards are transversely formed in the inner side of the upper middle portion of the sideboard body, and the width of the groove bottom, protruding outwards, of each wedge-shaped groove is smaller than that of an opening. The lower portion of each wedge-shaped groove is connected with the upper portion of the next wedge-shaped groove, so that the two connecting positions are V-shaped grooves protruding inwards, the top ends of the sharp portions of the V-shaped grooves and the inner side of the side plate body are located on the same plane, and the middle V-shaped groove protruding inwards is formed in the maximum stress position when a carriage is in a full-load state. And the lower parts of the two side plate bodies form an inward transition section connected with the bottom plate through at least two bending creases from the vertical surfaces to the horizontal surfaces at the bottoms of the two side plate bodies. Compared with the prior art, the problems that an existing dumper carriage is large in weight and small in effective size can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of special vehicle and accessory manufacturing, in particular to a side board for a dump truck carriage. Background Art

[0002] Most of the existing side board structure assemblies of dump trucks are of two structures: a grid side board and a U-shaped double-V side board. The grid side board includes an upper frame and a lower frame at the upper and lower edges of the side board body, and columns are evenly distributed inside the side board body. To ensure strength and impact resistance, the side board and bottom board of the carriage are both provided with multiple ribs. The upper and lower frames, columns, and ribs form a grid shape. Due to the large number of ribs, the entire side board is heavy, and the grid side board is wide, so the volume of the whole vehicle is small when the overall dimensions of the vehicle are the same. The U-shaped double or multi-V side board includes a transition section formed by at least two bending creases from the vertical plane to the horizontal plane at the lower part of the two side board bodies, which is inward and connected to the bottom board, so that the two side board bodies and the bottom board form a U shape. At least two outwardly protruding V-shaped grooves are horizontally arranged in the upper and middle parts of the side board body. Although this structure cancels the lower frame at the bottom of the side board body, reduces the unloading resistance at the same time, and uses the double or multi-V structure to reduce the weight and increase the impact resistance, the number of ribs is reduced. After the number of ribs is reduced, the strength of the side board is low, and the box is prone to swelling and deformation; in addition, the double V-shaped grooves increase the capacity of the carriage. Although the purpose of capacity expansion can be achieved, the sudden change in the capacity expansion part of the double-V structure is likely to accumulate materials in the expansion part. After using for a period of time, the double-V expansion part, that is, the V-shaped groove, is filled with small pieces of materials, and the actual transportable volume of the box is not effectively increased. Summary of the Utility Model

[0003] The problem to be solved by the utility model is to provide a side board structure for a dump truck to solve the problems of large weight and small effective volume of the existing dump truck carriage.

[0004] To solve the above problems, the technical solution of the utility model is: the side board structure of this dump truck includes a side board body made of NM450 material. At least two outwardly protruding wedge-shaped grooves are horizontally arranged on the inner side of the upper and middle parts of the side board body. The width of the bottom of the wedge-shaped groove protruding outward is less than the width of the opening. The lower part of each wedge-shaped groove is connected to the upper part of the next wedge-shaped groove, so that the two connection parts form an inwardly convex V-shaped groove. The tip of the V-shaped groove is on the same plane as the inner side of the side board body. The middle inwardly convex V-shaped groove is arranged at the maximum stress position when the carriage is fully loaded. The lower parts of the two side board bodies form an inward transition section connected to the bottom board through at least two bending creases from the vertical plane to the horizontal plane.

[0005] In the above technical solution, a more specific solution may be: there are two wedge-shaped grooves, and the bottom edge of the next wedge-shaped groove coincides with the top two creases of the transition section.

[0006] Furthermore, the transition section of the side plate body includes three creases from the vertical plane to the horizontal plane of the side plate body.

[0007] Furthermore, the shapes of every two of the wedge-shaped grooves are not exactly the same.

[0008] Furthermore, not every one of the wedge-shaped grooves is an equilateral wedge-shaped groove.

[0009] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0010] The side plate structure of this dump truck can increase the expansion volume without changing the material strength by changing the original double or multi-V-shaped grooves to double or multi-wedge-shaped grooves. Moreover, the vertical section in the middle and the inclined section at the lower part of the wedge-shaped groove form a discharging space, and there will be no defect of frequent material accumulation in the smaller V-shaped grooves, truly realizing effective expansion; the reverse V-shaped groove structure between the two multi-wedge-shaped grooves decomposes the impact of the material on the side plate, especially at the maximum stress position when the carriage is fully loaded, maximizing the decomposition of stress and increasing the resilience. Moreover, the reverse V-shaped groove structure makes the two adjacent wedge-shaped grooves closely combined, with a compact structure. More importantly, it can also serve as a reference for processing the two adjacent wedge-shaped grooves. The entire side plate structure has higher side plate strength, fewer ribs, a larger vehicle loading capacity, and a lighter total vehicle weight on the basis of the double-V groove structure, with the characteristics of novel and beautiful appearance, high side plate strength, few reinforcing ribs, less welding, low manufacturing cost, light self-weight, high effective volume, and strong product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the front view of the embodiment of the utility model installed on the side plate structure assembly of the dump truck;

[0012] Figure 2 is the left view of the front view of the embodiment of the utility model installed on the side plate structure assembly of the dump truck;

[0013] Figure 3 is the schematic cross-sectional structure diagram of the embodiment of the utility model;

[0014] Reference numerals in the figures: upper frame 1, side plate body 2, wedge-shaped groove 2-1, V-shaped groove 2-2, crease 2-3, middle column 3, rear column 4, upper sealing plate 5, deflector 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following further details the embodiments of the utility model in conjunction with the drawings:

[0016] The side plate assembly installed using the side plate structure of this dump truck is as Figure 1 , Figure 2As shown in the figure, it includes an upper frame 1 at the upper edge of the side plate body 2. Middle columns 3 are evenly distributed inside the side plate body 2. A rear column 4 is provided at the rear of the side plate body 1. An upper sealing plate 5 is provided on the rear column. A deflector 6 is provided at the rear end of the side plate body 1.

[0017] As Figure 3 The side plate structure of the dump truck shown in the figure includes a side plate body 2 made of NM450 material. At least two outwardly protruding wedge-shaped grooves 2-1 are transversely provided inside the upper middle part of the side plate body. The width of the bottom of the wedge-shaped groove protruding outward is smaller than the opening width. There are two wedge-shaped grooves here. The bottom edge of the lower wedge-shaped groove coincides with the top two creases of the transition section. In other embodiments, there can be three. The groove depth of each wedge-shaped groove 2-1 is the same to ensure that the bottoms of all wedge-shaped grooves are on a vertical plane. The widths of every two wedge-shaped grooves 2-1 are not necessarily the same, and the inclination angles of both sides of the widths of every two wedge-shaped grooves are not necessarily the same. Each wedge-shaped groove 2-1 is not necessarily an equilateral wedge-shaped groove. The width of the wedge-shaped groove and the inclination angles of both sides of the width are obtained based on data analysis of factors such as force analysis, material thickness, and resilience at this place; the lower part of each wedge-shaped groove is connected to the upper part of the next wedge-shaped groove so that the two connection parts form an inwardly convex V-shaped groove 2-2. The tip of the V-shaped groove is on the same plane as the inner side of the side plate body. The middle inwardly convex V-shaped groove is provided at the maximum stress position when the carriage is fully loaded. There is only one inwardly convex V-shaped groove here, which is set at the maximum stress position when the carriage is fully loaded. By changing the original double or multiple V-shaped grooves to double or multiple wedge-shaped grooves, the expansion volume can be increased without changing the material strength. Moreover, the vertical section in the middle and the inclined section at the lower part of the wedge-shaped groove form a discharge space, and there will be no defect of frequent material accumulation in the smaller V-shaped grooves, truly realizing effective expansion; the reverse V-shaped groove structure between the two multi-wedge-shaped grooves decomposes the impact of the material on the side plate, especially at the maximum stress position when the carriage is fully loaded, maximizing the decomposition of stress and increasing resilience. Moreover, the reverse V-shaped groove structure makes the two adjacent wedge-shaped grooves tightly combined, with a compact structure. More importantly, it can also be used as a reference for processing two adjacent wedge-shaped grooves.

[0018] At least two bending creases are formed from the vertical plane to the horizontal plane at the lower part of the two side plate bodies 2 to form an inward transition section connected to the bottom plate. The transition section of the side plate body here includes three creases 2-3 from the vertical plane to the horizontal plane of the side plate body.

[0019] On the basis of the side plate body 2 having a crease transition section, the lower part of the middle column 3 also has a transition section with creases, and all are processed from NM450 plates.

[0020] The manufacturing steps include:

[0021] S1 Blanking: Use NM450 plates for blanking and mark the maximum stress position under the full-load state of the carriage.

[0022] S2 Pressing the reverse V-groove: Use a bending machine and bending die to press the inwardly convex V-groove in the side plate body at the marked position. The bending die includes an upper die with a V-shaped opening and a lower die with a U-shaped structure; the upper die of the bending die is an upper die with a V-shaped opening with a 79° sharp angle.

[0023] S3 Pressing the creases: Use a bending machine and a creasing knife. Taking the tip of the V-groove as the reference, press all the creases on the inner side of the side plate body that are in the same horizontal plane as the protruding tip of the V-groove, that is, the uppermost crease of the first wedge-shaped groove of the formed side plate body; then turn the entire side plate body to the other side, that is, the inner side facing up. At this time, the V-groove becomes an inverted V-groove. Taking the bottom crease of the inverted V-groove as the reference, press all the creases that are in the same horizontal plane as the bottom of the wedge-shaped groove, that is, the second-upper crease of the first wedge-shaped groove and the second-lower crease of the last wedge-shaped groove of the formed side plate body; then, taking the lowermost edge of the formed side plate body as the reference, press the other creases of the transition section; the creasing knife used is a straight knife, and the bending machines are all 2500-ton bending machines.

[0024] In step S3, when pressing the second-upper crease of the first wedge-shaped groove and the second-lower crease of the last wedge-shaped groove of the formed side plate body, after pressing the second-upper crease of the first wedge-shaped groove of the formed side plate body, the side plate body is horizontally rotated 180°, and then the second-lower crease of the last wedge-shaped groove of the formed side plate body is pressed.

[0025] In step S3, when pressing the other creases of the transition section, press multiple creases sequentially from top to bottom or from bottom to top along the formed side plate body, or take a certain crease as the reference and press multiple creases sequentially from this crease to both sides. For each crease pressed, measure the stress again and analyze the stress trend and stress resilience, optimize the data of the pressed creases, and then reposition the reference and press the next crease.

[0026] In other embodiments, there can be four or five creases in the transition section of the entire side plate body. Most of the creases are analyzed based on the processing technology and actual stress. However, the more creases there are, the lower the production efficiency will be, and the stress intensity may not necessarily increase. In step S3, when pressing the other four or five creases of the transition section, press them sequentially from top to bottom or from bottom to top along the formed side plate body.

[0027] Today, with the state's strict crackdown on overloading and the promotion of standard-load and safe transportation, users have increasingly higher requirements for parameters such as the effective volume of dump trucks and the driving stability of the vehicle's overall weight. The design concept of increasing the height of the whole vehicle, thickening the frame, and strengthening the vehicle a few years ago can no longer keep up with the market development. Users urgently need vehicles with higher strength, lighter weight, and larger volume. Based on this demand of users, our unit has developed a double-wedge groove press-V groove 5-knife bent side plate structure (this is the optimal solution) that can further reduce the gravity of the side plate, increase the volume of the box body, and improve the strength of the side plate. This structural plate uses NM450 steel plate, is formed by using special molds and multi-knife bending. It has a novel and beautiful appearance, an expanded structure, greatly improves the strength of the side plate, reduces the number of side plate stiffeners, reduces the side plate welding amount, reduces the manufacturing cost, increases the effective volume of the carriage on the premise of ensuring the overall dimensions of the vehicle, and enhances the product competitiveness. Therefore, the double-wedge groove press-V groove 5-knife bent side plate structure better meets the needs of customers and is more suitable for the future market demand.

Claims

1. A side plate structure of a dump truck, characterized in that: The side plate body includes NM450 material. At least two outwardly protruding wedge-shaped grooves are horizontally provided inside the upper middle part of the side plate body. The width of the groove bottom of the wedge-shaped groove protruding outward is smaller than the opening width. The lower part of each wedge-shaped groove is connected to the upper part of the next wedge-shaped groove, so that the two connection parts form an inwardly convex V-shaped groove. The tip of the V-shaped groove is on the same plane as the inner side of the side plate body. The middle inwardly convex V-shaped groove is arranged at the maximum stress position under the full-load state of the carriage. The lower parts of the two side plate bodies form an inward transition section connected to the bottom plate through at least two bending creases from the vertical plane to the horizontal plane at the bottom.

2. The side plate structure of the dump truck according to claim 1, wherein: There are two wedge-shaped grooves, and the bottom edge of the next wedge-shaped groove coincides with the top two creases of the transition section.

3. The side plate structure of the dump truck according to claim 2, characterized in that: The transition section of the side plate body includes three creases from the vertical plane to the horizontal plane of the side plate body.

4. The side plate structure of the dump truck according to any one of claims 1-3, characterized in that: The shapes of every two wedge-shaped grooves are not exactly the same.

5. The side plate structure of the dump truck according to claim 4, characterized in that: Not every wedge-shaped groove is an equilateral wedge-shaped groove.

Images