Lightweight plate, lightweight bottom plate and lightweight composite bottom plate

Abstract

The utility model discloses a light-weight plate, a light-weight bottom plate and a light-weight composite bottom plate. The plate is in a flat plate shape and comprises a plurality of unit strips which are sequentially arranged in parallel in the thickness direction or the width direction of the unit strips. The adhesive layers are arranged between every two adjacent unit strips; wherein the unit strips are sequentially arranged in parallel along the thickness direction edge, and a plurality of lightening holes I which are formed in the width direction edge of at least one unit strip and extend along the length direction of the unit strip are distributed in the at least one unit strip; or, the unit strips are sequentially arranged in parallel along the width-direction edges of the unit strips, and a plurality of lightening holes I which are formed in the thickness-direction edges of at least one unit strip and extend along the length direction of the unit strip are distributed in the at least one unit strip; and the positions of the lightening holes I correspond to the width-direction edges of the plate. By arranging the lightening holes, the air-dry density of the plate is reduced, the bending strength of the plate meeting the use requirement is reserved while the weight is reduced, and the strength requirement for producing a light-weight bottom plate or a light-weight composite bottom plate is met.

Description

Technical Field

[0001] The utility model relates to the technical field of plate processing, in particular to a lightweight plate, a lightweight base plate and a lightweight composite base plate. Background Art

[0002] In recent years, with the advancement of new technologies and new materials, lightweight logistics and transportation has become one of the important trends in the development of modern logistics. Lightweighting of transportation vehicles is an important means of lightweighting logistics and transportation, and lightweighting of vehicle bodies is an important part of lightweighting measures for transportation vehicles. At present, people are mainly committed to studying the application of lightweight materials in transportation vehicles, such as aluminum, magnesium alloys, plastics, glass fiber or carbon fiber. The floor is one of the three major materials of the car body. The use of lightweight floor products can effectively reduce the weight of the body and achieve lightweighting of transportation vehicles.

[0003] At present, the main lightweight floor products for vehicles are: 1. Honeycomb panels, including plastic honeycomb panels, aluminum-plastic honeycomb panels, steel-plastic honeycomb panels, etc., which are of high cost and low strength, and have a limited scope of use; 2. Composite floor panels such as tic-tac-toe / cross-shaped core panels. There are many such products, but they cannot meet the requirements of the car floor due to their low bending and compressive strength; 3. Plywood, including core panels and panels, generally punch holes in the vertical direction of the molded core panel to reduce weight, but the vertical punching destroys the bending strength of the board itself, and cannot meet the high strength requirements of the car floor. For example, patent 95232045.2.

[0004] The above-mentioned lightweight floor products for vehicles provided in the related art all have limitations, resulting in the inability to meet the lightweight and high-strength requirements of the vehicle floor, and there is room for further improvement. Utility Model Content

[0005] The embodiments of the present application provide a lightweight plate, a lightweight base plate and a lightweight composite base plate to at least solve the problems existing in the lightweight base plate for vehicles in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a lightweight plate, which is in a flat plate shape and includes:

[0008] There are several unit bars, each of which has a length side, a width side and a thickness side, and the length side is larger than the width side, and the width side is larger than the thickness side. Several unit bars are arranged in parallel along their thickness side or width side.

[0009] A plurality of adhesive layers are disposed between two adjacent unit strips to bond the unit strips under high temperature and pressure to form the sheet;

[0010] Wherein, the unit bars are arranged in parallel in sequence along their thickness sides, and at least one of the unit bars is provided with a plurality of weight-reducing holes opened on its width sides and extending along its length sides; or,

[0011] The unit bars are arranged in parallel in sequence along their width sides, and at least one of the unit bars is provided with a plurality of weight-reducing holes opened on its thickness side and extending along its length side;

[0012] The position of the weight-reducing hole corresponds to the width edge of the plate.

[0013] In some of the embodiments, the minimum value of the edge of the weight-reducing hole 1 and the unit bar is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 1 is greater than or equal to 0.1 mm.

[0014] In some of the embodiments, barrier strips are provided on both sides of the widthwise edge of the plate to prevent the weight-reducing holes from being arranged through-through.

[0015] In some embodiments, the unit strips are bamboo strips, or a combination of bamboo strips and wood strips; the barrier strips are bamboo strips, or a combination of bamboo strips and wood strips. It can be understood that since bamboo grows along the fiber direction, the length of the bamboo strip is the bamboo fiber direction, the width is the bamboo chord direction, and the thickness is the bamboo radial direction.

[0016] In some embodiments, the barrier strip includes a plurality of barrier strips 1 and / or a plurality of barrier strips 2, and a plurality of weight-reducing holes 2 are distributed on the width side or thickness side of the barrier strip 1, and the weight-reducing holes 2 are correspondingly arranged on the width side of the plate;

[0017] The positions of the weight-reducing hole 1 on the unit bar and the weight-reducing hole 2 on at least one of the barrier bars 1 are staggered so as not to be through-set on the width side of the plate. In this embodiment, the weight-reducing hole 1 and the weight-reducing hole 2 can have the same hole diameter, and the weight-reducing hole 1 and the weight-reducing hole 2 can be any shape, including but not limited to circle, ellipse, rectangle, triangle, etc., with circle being the preferred choice.

[0018] In some embodiments, the weight-reducing hole 2 on a single barrier strip 1 is staggered with the weight-reducing hole 2 on at least one other barrier strip 1 so as not to be arranged through the width of the plate. In this embodiment, one or both of the barrier strip 1 and the barrier strip 2 are provided, and the barrier strip 1 and / or the barrier strip 2 are arranged at the edge of the plate, so that when the plate is used as a floor of a carriage, rainwater and garbage on the ground are prevented from entering the floor of the carriage.

[0019] In some of the embodiments, the minimum value of the edge between the second weight-reducing hole and the first barrier strip is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent second weight-reducing holes is greater than or equal to 0.1 mm.

[0020] In some embodiments, the adhesive layer is provided between the barrier strip 1 and / or the barrier strip 2 and the unit strip.

[0021] In some of the embodiments, the thickness of the plate is 6 mm to 37 mm.

[0022] In the second aspect, an embodiment of the present application provides a lightweight bottom plate, which is the plate material described in the first aspect as the base material and is processed by one or more methods of splicing, finger jointing, and mortise and tenon jointing; in this embodiment, the processed lightweight bottom plate is adapted to the requirements of the 53-foot special box bottom plate. At present, the maximum thickness of the 53-foot special box bottom plate is 31.75 mm. The 33 mm plate material is taken as the base material, and is sawed into strips, mortised, etc., and then widened, lengthened, sanded, and other processing methods are used to make a 31.75 mm lightweight bottom plate to meet the requirements of the 53-foot special box bottom plate.

[0023] In the third aspect, an embodiment of the present application provides a lightweight composite floor, which includes the plate material described in the first aspect and a surface material arranged on the surface of the plate material, wherein the surface material is one or a combination of bamboo veneer, wood veneer, non-woven fabric, glass fiber, carbon fiber, and impregnated kraft paper; in this embodiment, the processed lightweight floor is suitable for the floor requirements of buses and vans. At present, the minimum thickness of the floor of buses and vans is 9 mm. The 6 mm plate material is taken as the base core board, and one or more of bamboo veneer, wood veneer, non-woven fabric, glass fiber, carbon fiber, and impregnated kraft paper are covered on the surface of the plate material to make a 9 mm lightweight composite floor, which is used as the floor of buses and vans, providing a more beautiful, more waterproof, more wear-resistant, etc. surface. At the same time, the plate has high strength in the longitudinal direction and relatively weak transverse strength. Arranging the surface material on the surface of the plate can effectively improve the lateral strength of the lightweight composite floor to meet a wider range of usage scenarios.

[0024] Compared with the related art, the lightweight plate, lightweight base plate and lightweight composite base plate provided by the embodiments of the present application have at least the following technical effects:

[0025] 1. The lightweight plate provided by the utility model reduces the air-dry density of the plate by arranging weight-reducing holes, and retains the bending strength of the plate to meet the use requirements while reducing the weight, so as to meet the strength required for producing lightweight base plates or lightweight composite base plates as a base material, and through the reasonable arrangement of the positions of the weight-reducing holes and the setting of the barrier strips, the weight-reducing holes on the sides of the lightweight base plate or the lightweight composite base plate are not through-through, which enhances the strength of the base plate while effectively blocking rainwater and garbage from entering the interior of the base plate.

[0026] 2. The lightweight bottom plate provided by the utility model uses a lightweight plate as a base material, and is made into a lightweight bottom plate with sufficient strength and qualified size through one or more processing methods such as splicing, finger jointing, and mortise and tenon jointing. It is used as a 53-foot special box bottom plate to meet the needs of special box bottom plates.

[0027] 3. The lightweight composite floor provided by the utility model has one or more of bamboo veneer, wood veneer, non-woven fabric, glass fiber, carbon fiber, and impregnated kraft paper as surface materials on the surface of the lightweight board material to produce a lightweight composite floor panel that meets the strength requirements and is more waterproof and wear-resistant. The floor panel is used as a bus or van floor panel to meet the needs of bus or van floors.

[0028] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 1 .

[0031] Figure 2 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 2 .

[0032] Figure 3 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 3 .

[0033] Figure 4 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 4 .

[0034] Figure 5 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 5 .

[0035] Figure 6 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 6 .

[0036] Figure 7 It is a schematic diagram of a lightweight base plate structure according to an exemplary embodiment.

[0037] Figure 8 The diagram is a schematic diagram of a lightweight composite base plate structure according to an exemplary embodiment.

[0038] In the figure:

[0039] 10. Plate; 101. Unit strip; 102. Adhesive layer; 103. Barrier strip 1; 104. Barrier strip 2; 105. Surface material;

[0040] 11. Lightweight base plate; 12. Lightweight composite base plate. DETAILED DESCRIPTION

[0041] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] At present, the main lightweight floor products for vehicles are: 1. Honeycomb panels, including plastic honeycomb panels, aluminum-plastic honeycomb panels, steel-plastic honeycomb panels, etc., which are of high cost and low strength, and have a limited scope of use; 2. Composite floor panels such as tic-tac-toe / cross-shaped core panels. There are many such products, but they cannot meet the requirements of the car floor due to their low bending and compressive strength; 3. Plywood, including core panels and panels, generally punch holes in the vertical direction of the molded core panel to reduce weight, but the vertical punching destroys the bending strength of the board itself, and cannot meet the high strength requirements of the car floor. For example, patent 95232045.2.

[0045] Based on the above situation, the embodiments of the present utility model provide a lightweight plate material, a lightweight base plate and a lightweight composite base plate, which are described in detail below in conjunction with specific embodiments and drawings.

[0046] Example 1

[0047] An embodiment of the utility model provides a lightweight plate. Figure 1 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 1 .like Figure 1 As shown, the board 10 is in the shape of a flat plate, including a plurality of unit strips 101, the unit strips 101 are bamboo strips, which are in the shape of strips as a whole, and have a rectangular cross section, with a length side, a width side and a thickness side, and the length side> the width side> the thickness side, and the plurality of unit strips 101 are arranged in parallel along their thickness sides; the adhesive layer 102, which is in the number, is arranged between two adjacent unit strips 101 to glue the unit strips 101 under high temperature hot pressing to form the board 10; wherein,

[0048] At least one unit bar 101 is provided with a plurality of weight-reducing holes 1 which are opened on its width side and extend along its length direction. The positions of the weight-reducing holes 1 correspond to the width side of the formed plate 10 .

[0049] In this embodiment, the length*width*thickness of the unit bar 101 is 2100 mm*33 mm*7 mm, the air-dried density is about 700 kg / m3, and the unit bar 101 is pretreated. The pretreatment method is as follows: the unit bar 101 is dried to a moisture content of less than 10%, soaked in a phenolic glue with a solid content of about 30% for about 2 minutes, and then dried to a moisture content of less than 15%;

[0050] Take 57 unit bars 101, and set weight-reducing holes 1 on the sides of 26 unit bars 101 with a width of 33 mm. The weight-reducing holes 1 are circular and have a diameter of 15 mm to 30 mm. The minimum distance between the weight-reducing holes 1 and the edge of the unit bar 101 is greater than or equal to 1 mm, and the minimum distance between adjacent weight-reducing holes 1 is greater than or equal to 0.1 mm, so that the weight is reduced by 25%;

[0051] Subsequently, the 57 unit strips 101 are arranged in parallel along the thickness side. When the phenolic glue soaked in the pretreatment stage between two adjacent unit strips 101 is subjected to high temperature hot pressing, the phenolic glue forms an adhesive layer 102 between the unit strips 101 for bonding, and the compression ratio is about 7%, resulting in a lightweight board with a length of 2100 mm, a width of about 371 mm, and a thickness of about 33 mm (wherein the width of the board 10 is calculated as follows: unit strip thickness*number of unit strips*(1-compression ratio)=7*57*0.93=371 mm), and an air-dry density of about 620 kg / m3. Since only 26 of the unit strips 101 have a weight-reducing hole 1 set on the width side corresponding to 33 mm, the width side of the formed board 10 is not through; wherein, the position of the weight-reducing hole 1 corresponds to the width side of the formed board 10.

[0052] Example 2

[0053] An embodiment of the utility model provides a lightweight plate. Figure 2 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 2 .like Figure 2 As shown, the board 10 is in the shape of a flat plate, including a plurality of unit bars 101, which are a combination of bamboo bars and wooden bars, and are strip-shaped as a whole, and have a rectangular cross-section, with a length side, a width side and a thickness side, and the length side> the width side> the thickness side, and a plurality of unit bars 101 are arranged in parallel along their width sides; a plurality of adhesive layers 102 are arranged between two adjacent unit bars 101 to glue the unit bars 101 under high temperature hot pressing to form the board 10; wherein, at least one unit bar 101 is provided with a plurality of weight-reducing holes 1 opened on its thickness side and extending along its length direction, and the position of the weight-reducing hole 1 corresponds to the width side of the formed board 10.

[0054] In this embodiment, the length, width and thickness of the bamboo strips in the unit strip 101 are 2480 mm*20 mm*7 mm, and the air-dried density is about 700 kg / m3. The length, width and thickness of the wood strips in the unit strip 101 are 2480 mm*28 mm*7 mm, and the air-dried density is about 750 kg / m3. The unit strip 101 is pretreated, and the pretreatment method is as follows: the bamboo strips and the wood strips are dried to a moisture content of less than 10%, and phenolic glue is applied to the bonding surfaces of the bamboo strips and the wood strips;

[0055] Take 65 unit strips 101, of which 61 are bamboo strips and 4 are wooden strips, and set a weight-reducing hole 1 on the edge of the 61 bamboo strips corresponding to a thickness of 7 mm. The weight-reducing hole 1 is circular and has a diameter of 3 mm to 5 mm. The minimum value between the weight-reducing hole 1 and the edge of the bamboo strip is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 1 is greater than or equal to 0.1 mm, so that the weight is reduced by 50%;

[0056] Subsequently, the 61 bamboo strips and the 4 wooden strips are arranged in parallel along the width side. When the phenolic adhesive coated between two adjacent bamboo strips, wooden strips and between the bamboo strips and wooden strips in the pretreatment stage is applied with high temperature and hot pressing, the phenolic adhesive forms an adhesive layer 102 between adjacent bamboo strips, adjacent wooden strips and between the bamboo strips and wooden strips for bonding. The compression ratio is about 5%, and a lightweight board with a length of 2480 mm, a width of about 1265 mm and a thickness of about 7 mm is obtained (wherein the width of the board 10 is calculated as follows: unit strip width * number of unit strips * (1-compression ratio) = ((61*20+4*28)*0.95) = 1265 mm) and an air-dry density of about 404 kg / m3 is obtained; wherein, the position of the weight reduction hole corresponds to the width side of the formed board 10.

[0057] Example 3

[0058] An embodiment of the utility model provides a lightweight plate. Figure 3 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 3 .like Figure 3 As shown, the board 10 is in the shape of a flat plate, including a plurality of unit bars 101, which are bamboo bars, which are in the shape of a strip as a whole, and have a rectangular cross-section, with a length side, a width side and a thickness side, and the length side> the width side> the thickness side, and the plurality of unit bars 101 are arranged in parallel along their thickness sides; a plurality of adhesive layers 102 are arranged between two adjacent unit bars 101 to glue the unit bars 101 under high temperature and hot pressing to form the board 10; wherein, at least one unit bar 101 is provided with a plurality of weight-reducing holes 1 opened on its width side and extending along its length direction, and the position of the weight-reducing holes 1 corresponds to the width side of the formed board 10;

[0059] It also includes a barrier strip 103 arranged on both sides of the width side of the board 10. The barrier strip 103 is a bamboo strip, which is strip-shaped as a whole and has a rectangular cross-section, with a length side, a width side and a thickness side. A plurality of weight-reducing holes 2 are also distributed on the width side of the barrier strip 103, and the weight-reducing hole 1 on the unit strip 101 is staggered with the weight-reducing hole 2 on at least one barrier strip 103 so as not to be set through on the width side of the board 10. At the same time, the weight-reducing hole 1 on a single barrier strip 103 is staggered with the weight-reducing hole 2 on at least one other barrier strip 103 so as not to be set through on the width side of the board 10.

[0060] In this embodiment, the length, width and thickness of the unit bar 101 and the barrier bar 103 are 2100 mm*33 mm*7 mm, and the air-dried density is about 700 kg / m3. The unit bar 101 and the barrier bar 103 are pretreated. The pretreatment method is as follows: the unit bar 101 and the barrier bar 103 are dried to a moisture content of less than 10%, and soaked in phenolic glue with a solid content of about 28% for about 2 minutes, and then dried to a moisture content of less than 15%;

[0061] Take 51 unit bars 101, set a weight-reducing hole 1 at the edge corresponding to a width of 33 mm, the weight-reducing hole 1 is circular, and the diameter is 15 mm-30 mm, the minimum value of the weight-reducing hole 1 and the edge of the unit bar 101 is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 1 is greater than or equal to 0.1 mm, so that the weight is reduced by 18%;

[0062] Take 6 barrier strips 103, and open a small number of weight-reducing holes 2 of the same specification as the weight-reducing holes on the width side of the barrier strip 103 corresponding to 33 mm. The minimum value of the edge of the weight-reducing hole 2 and the barrier strip 103 is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 2 is greater than or equal to 0.1 mm, so that the weight is reduced by 10%. The weight-reducing holes 2 on the barrier strip 103 are staggered with the weight-reducing holes 1 on the unit strip 101. The positions of the weight-reducing holes 2 on the 6 barrier strips 103 are also staggered, so as not to be set through the width side of the plate 10;

[0063] Subsequently, the 51 unit bars 101 and the 6 barrier bars 103 are arranged in parallel along the thickness side. The 6 barrier bars 103 are divided into two groups of three and are arranged on both sides of the 51 unit bars 101. When the phenolic adhesive soaked in the pretreatment stage between two adjacent unit bars 101, adjacent barrier bars 103, and between the unit bars 101 and the barrier bars 103 is subjected to high-temperature hot pressing, the phenolic adhesive forms an adhesive layer 102 between the unit bars 101 and the barrier bars 103 for bonding. The compression ratio is about 7%, and a lightweight plate with a length of 2100 mm, a width of about 371 mm, and a thickness of about 33 mm is obtained (wherein the width of the plate 10 is calculated as: unit bar thickness*number of unit bars*(1-compression ratio)=7*57*0.93=371 mm), and an air-dry density of about 580 kg / m3 is obtained; wherein, the positions of the weight reduction holes 1 and 2 correspond to the width side of the formed plate 10.

[0064] Example 4

[0065] An embodiment of the utility model provides a lightweight plate. Figure 4 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 4 .like Figure 4As shown, the board 10 is in the shape of a flat plate, including a plurality of unit bars 101, which are bamboo bars, which are in the shape of a strip as a whole, and have a rectangular cross-section, with a length side, a width side and a thickness side, and the length side> the width side> the thickness side, and the plurality of unit bars 101 are arranged in parallel along their thickness sides; a plurality of adhesive layers 102 are arranged between two adjacent unit bars 101 to glue the unit bars 101 under high temperature and hot pressing to form the board 10; wherein, at least one unit bar 101 is provided with a plurality of weight-reducing holes 1 opened on its width side and extending along its length direction, and the position of the weight-reducing holes 1 corresponds to the width side of the formed board 10;

[0066] It also includes a barrier strip 103 arranged on both sides of the width side of the board 10, the barrier strip 103 is a bamboo strip, which is strip-shaped as a whole and has a rectangular cross-section, with a length side, a width side and a thickness side, and the length side>the width side>the thickness side, and a plurality of weight-reducing holes 2 are also distributed on the width side of the barrier strip 103, and the weight-reducing hole 1 on the unit strip 101 is staggered with the weight-reducing hole 2 on at least one barrier strip 103 so as not to be set through on the width side of the board 10, and at the same time, the weight-reducing hole 1 on a single barrier strip 103 is staggered with the weight-reducing hole 2 on at least one other barrier strip 103 so as not to be set through on the width side of the board 10.

[0067] In this embodiment, the length, width and thickness of the unit bar 101 and the barrier bar 103 are 2100 mm*37 mm*7 mm, and the air-dried density is about 700 kg / m3. The unit bar 101 and the barrier bar 103 are pretreated. The pretreatment method is as follows: the unit bar 101 and the barrier bar 103 are dried to a moisture content of less than 10%, soaked in phenolic glue with a solid content of about 28% for about 2 minutes, and then dried to a moisture content of less than 15%;

[0068] Take 53 unit bars 101, set a weight-reducing hole 1 on the side corresponding to the width of 37 mm, the weight-reducing hole 1 is circular, and the diameter is 15 mm-32 mm, the minimum value of the weight-reducing hole 1 and the edge of the unit bar 101 is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 1 is greater than or equal to 0.1 mm, so that the weight is reduced by 18%;

[0069] Take 4 barrier strips 103, and open a small number of weight-reducing holes 2 of the same specification as the weight-reducing holes on the width side of the barrier strip 103 corresponding to 37 mm. The minimum value of the edge of the weight-reducing hole 2 and the barrier strip 103 is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 2 is greater than or equal to 0.1 mm, so that the weight is reduced by 10%, and the weight-reducing holes 2 on the barrier strip 103 are staggered with the weight-reducing holes 1 on the unit strip 101. The positions of the weight-reducing holes 2 on the 4 barrier strips 103 are also staggered, so as not to be set through the width side of the plate 10;

[0070] Then, the 53 unit bars 101 and the four barrier bars 103 are arranged in parallel along the thickness direction. The four barrier bars 103 are arranged in groups of two on both sides of the 53 unit bars 101, and a barrier bar 103 on the inner side of one side is sandwiched between the first and second unit bars 101 at the edge. When the phenolic glue soaked between the adjacent two unit bars 101 and the barrier bar 103 in the pretreatment stage is applied with lateral high-temperature hot pressing, the phenolic glue is shaped The glue layer 102 between the unit strips 101 is glued, and the compression ratio is about 7%, so as to obtain a lightweight plate with a length of 2100 mm, a width of about 371 mm, a thickness of about 37 mm (wherein the width of the plate 10 is calculated as follows: unit strip thickness * number of unit strips * (1-compression ratio) = 7*57*0.93 = 371 mm), and an air-dry density of about 570 kg / cubic meter; wherein, the positions of the first and second weight-reducing holes correspond to the width edge of the formed plate 10.

[0071] Example 5

[0072] An embodiment of the utility model provides a lightweight plate. Figure 5 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 5 .like Figure 5 As shown, the board 10 is in the shape of a flat plate, including a plurality of unit bars 101, which are bamboo bars, which are in the shape of a strip as a whole, and have a rectangular cross-section, with a length side, a width side and a thickness side, and the length side> the width side> the thickness side, and the plurality of unit bars 101 are arranged in parallel along their thickness sides; a plurality of adhesive layers 102 are arranged between two adjacent unit bars 101 to glue the unit bars 101 under high temperature and hot pressing to form the board 10; wherein, at least one unit bar 101 is provided with a plurality of weight-reducing holes 1 opened on its width side and extending along its length direction, and the position of the weight-reducing holes 1 corresponds to the width side of the formed board 10;

[0073] It also includes a second barrier strip 104 arranged on both sides of the width side of the board 10. The second barrier strip 104 is a bamboo strip, which is strip-shaped as a whole and has a rectangular cross-section with a length side, a width side and a thickness side.

[0074] In this embodiment, the length, width and thickness of the unit bar 101 and the barrier bar 104 are 2100 mm*33 mm*7 mm, and the air-dry density is about 700 kg / m3. The unit bar 101 and the barrier bar 104 are pretreated. The pretreatment method is as follows: the unit bar 101 and the barrier bar 104 are dried to a moisture content of less than 10%, soaked in phenolic glue with a solid content of about 25% for about 2 minutes, and then dried to a moisture content of less than 15%;

[0075] Take 55 unit bars 101, set a weight-reducing hole 1 at the edge corresponding to a width of 33 mm, the weight-reducing hole 1 is circular, and the diameter is 15 mm-30 mm, the minimum value of the weight-reducing hole 1 and the edge of the unit bar 101 is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 1 is greater than or equal to 0.1 mm, so that the weight is reduced by 25%;

[0076] Subsequently, the 55 unit bars 101 and the two barrier bars 104 are arranged in parallel along the thickness side, and the two barrier bars 104 are respectively arranged on both sides of the 55 unit bars 101. When the phenolic glue soaked between the two adjacent unit bars 101 and the barrier bars 104 in the pretreatment stage is applied with high temperature hot pressing, the phenolic glue forms an adhesive layer 102 between the unit bars 101 and the barrier bars 104 for bonding, and the compression ratio is about 7%, resulting in a lightweight plate with a length of 2100 mm, a width of about 371 mm, and a thickness of about 33 mm (wherein the width of the plate 10 is calculated as: unit bar thickness*number of unit bars*(1-compression ratio)=7*57*0.93=371 mm), and an air-dry density of about 530 kg / m3; wherein, the position of the weight reduction hole 1 corresponds to the width side of the formed plate 10.

[0077] Example 6

[0078] An embodiment of the utility model provides a lightweight plate. Figure 6 A schematic diagram of a lightweight plate structure according to an exemplary embodiment Figure 6 .like Figure 6 As shown, the board 10 is in the shape of a flat plate, including a plurality of unit bars 101, which are bamboo bars, which are in the shape of a strip as a whole, and have a rectangular cross-section, with a length side, a width side and a thickness side, and the length side> the width side> the thickness side, and the plurality of unit bars 101 are arranged in parallel along their thickness sides; a plurality of adhesive layers 102 are arranged between two adjacent unit bars 101 to glue the unit bars 101 under high temperature and hot pressing to form the board 10; wherein, at least one unit bar 101 is provided with a plurality of weight-reducing holes 1 opened on the thickness side of the unit bar and extending along the length direction thereof, and the position of the weight-reducing holes 1 corresponds to the width side of the formed board 10;

[0079] It also includes a barrier strip 103 and a barrier strip 104 arranged on both sides of the width side of the plate 10. The barrier strip 103 and the barrier strip 104 are both bamboo strips. They are strip-shaped as a whole and have a rectangular cross-section, with a length side, a width side and a thickness side, and the length side>the width side>the thickness side. The barrier strip 1 103 is also distributed with a plurality of weight-reducing holes 2 on the width side.

[0080] In this embodiment, the length*width*thickness dimensions of the unit bar 101, the barrier bar 103 and the barrier bar 104 are 2100 mm*33 mm*7 mm, and the air-dry density is about 700 kg / m3, and the unit bar 101, the barrier bar 103 and the barrier bar 104 are pretreated, and the pretreatment method is as follows: the unit bar 101, the barrier bar 103 and the barrier bar 104 are dried to a moisture content of less than 10%, and soaked in phenolic glue with a solid content of about 28% for about 2 minutes, and then dried to a moisture content of less than 15%;

[0081] Take 53 unit bars 101, set a weight-reducing hole 1 at the edge corresponding to a width of 33 mm, the weight-reducing hole 1 is circular, and the diameter is 15 mm-30 mm, the minimum value of the weight-reducing hole 1 and the edge of the unit bar 101 is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 1 is greater than or equal to 0.1 mm, so that the weight is reduced by 18%;

[0082] Take two barrier strips 103, and open a small number of weight-reducing holes 2 with the same specifications as the weight-reducing holes on the side of the barrier strip 103 corresponding to a width of 33 mm. The minimum value of the edge between the weight-reducing holes 2 and the barrier strip 103 is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 2 is greater than or equal to 0.1 mm, so that the weight is reduced by 10%;

[0083] Then, the 51 unit bars 101, the 2 barrier bars 103 and the 2 barrier bars 104 are arranged in parallel along the thickness side, the 2 barrier bars 103 are arranged on both sides of the thickness side of the 51 unit bars 101, and then the 2 barrier bars 104 are arranged on both sides of the thickness side of the 2 barrier bars 103. When the phenolic glue soaked in the pretreatment stage between the two adjacent unit bars 101, barrier bars 103 and barrier bars 104 is applied with high temperature hot pressing, the phenolic glue forms the unit bars 101. 01. The adhesive layer 102 between the barrier strip 103 and the barrier strip 2 104 is glued, and the compression ratio is about 7%, so as to obtain a lightweight plate with a length of 2100 mm, a width of about 371 mm, a thickness of about 33 mm (wherein the width of the plate 10 is calculated as follows: unit strip thickness * number of unit strips * (1-compression ratio) = 7*57*0.93 = 371 mm), and an air-dry density of about 560 kg / m3; wherein, the positions of the weight reduction hole 1 and the weight reduction hole 2 correspond to the width edge of the formed plate 10.

[0084] In the above embodiments 1 to 6, bamboo is used as raw material to prepare lightweight boards, which reduce the air-dried density while retaining the bending strength of the board to meet the use requirements. Compared with other materials, it has the strength required for producing lightweight baseboards and lightweight composite baseboards. See Appendix 1 for details.

[0085]

[0086]

[0087] Schedule 1

[0088] As shown in Appendix 1, it can be seen that lightweight boards have the necessary strength for producing lightweight baseboards and lightweight composite baseboards compared to traditional boards or oak boards.

[0089] Example 7

[0090] This embodiment provides a lightweight base plate. Figure 7 FIG. 1 is a schematic diagram of a lightweight base plate structure according to an exemplary embodiment. Figure 7 The lightweight bottom plate 11 adopts one of Examples 1, 3-6, and other lightweight plates that adopt the technical solutions described in the specification of the utility model but have different production specifications as the base material, and uses one or several plate processing technologies such as splicing, finger jointing, and mortise and tenon joints to process the lightweight plate into a lightweight bottom plate, which is used as a 53-foot special box bottom plate to meet the needs of special box bottom plates; preferably, when the lightweight plate is used as the base material, barrier strip 1 103 and / or barrier strip 2 104 are arranged on both sides of the width of each lightweight plate to block the entry of rainwater and garbage during use.

[0091] Among them, taking the North American 53-foot special container as an example, the specific size and quantity of a set of bottom plates are shown in Appendix 2.

[0092]

[0093] Schedule 2

[0094] Combined with Appendix 2, the current conventional wood board, such as the bottom board of the 53-foot special box in North America, is oak board with an air-dried density of about 750 kg / m3, and each box uses 1.11 cubic meters of bottom board;

[0095] Refer to Appendix 3

[0096]

[0097] Schedule 3

[0098] Combined with Figure 7The plate bottom plate provided by the utility model, taking Example 1 as an example, has an air-dry density of about 620 kg / m3, and each box is reduced by 144.3 kg; according to statistical data, for every 100 kg reduction in the body weight, the fuel consumption per 100 kilometers is reduced by 0.3 liters to 0.5 liters. In this way, using the lightweight bottom plate provided by the utility model, the fuel consumption of the North American 53-foot special box per 100 kilometers is reduced by 0.43 liters to 0.72 liters.

[0099] Example 8

[0100] This embodiment provides a lightweight composite base plate. Figure 8 FIG. 1 is a schematic diagram of a lightweight composite bottom plate structure according to an exemplary embodiment. Figure 8 The lightweight composite floor panel 12 adopts one of the embodiments 1-6, as well as other lightweight panels that adopt the technical solutions described in the specification of the utility model but have different production specifications as the base material, and one or several combinations of bamboo veneer, wood veneer, glass fiber, carbon fiber, impregnated kraft paper, etc. are arranged on the surface of the base material as the surface layer 105, and processed into a lightweight composite floor panel 12 that meets the requirements of the floor panels of buses and vans.

[0101] Among them, taking the European side-opening curtain compartment as an example, the specific size and quantity of a set of bottom plates are shown in Appendix 4.

[0102]

[0103]

[0104] Schedule 4

[0105] Conventional wood plywood, such as birch plywood, is currently used as the floorboard for European side curtain cars. According to Appendix 3-4, its air-dry density is about 740 kg / m3, and each car floor is 0.80 m3. The composite floorboard provided by the utility model has an air-dry density of about 600 kg / m3, and each car weight is reduced by 112 kg. According to statistics, for every 100 kg reduction in the body weight, the fuel consumption per 100 km is reduced by 0.3-0.5 liters. Thus, using the lightweight composite floorboard provided by the utility model, the fuel consumption of European side curtain cars is reduced by 0.34-0.56 liters per 100 km.

[0106] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A lightweight plate, characterized in that: The plate (10) is in the shape of a flat plate and comprises: The unit bars (101) are arranged in parallel in sequence along their thickness edges or width edges; A plurality of adhesive layers (102) are disposed between two adjacent unit strips (101) to glue the unit strips (101) together under high temperature and hot pressure to form the plate (10); The unit bars (101) are arranged in parallel in sequence along their thickness sides, and at least one of the unit bars (101) is provided with a plurality of weight-reducing holes opened on its width sides and extending along its length sides; or, The unit bars (101) are arranged in parallel in sequence along their width sides, and at least one of the unit bars (101) is provided with a plurality of weight-reducing holes opened on its thickness side and extending along its length side; The position of the weight-reducing hole corresponds to the width edge of the plate (10).

2. The lightweight plate according to claim 1, characterized in that: The minimum value of the edge between the weight-reducing hole 1 and the unit bar (101) is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent weight-reducing holes 1 is greater than or equal to 0.1 mm.

3. The lightweight plate material according to claim 1, characterized in that: Both side edges of the plate (10) in the width direction are provided with barrier strips so that the weight-reducing holes are not arranged through.

4. The lightweight plate according to claim 3, characterized in that: The barrier strips include a plurality of barrier strips 1 (103) and / or a plurality of barrier strips 2 (104), a plurality of weight-reducing holes 2 are distributed on the width side or thickness side of the barrier strip 1 (103), and the weight-reducing holes 2 are correspondingly arranged on the width side of the plate (10); The positions of the weight-reducing hole 1 on the unit strip (101) and the weight-reducing hole 2 on at least one of the barrier strips 1 (103) are staggered so as not to be continuous on the width side of the plate (10).

5. The lightweight plate material according to claim 4, characterized in that: The weight-reducing hole 2 on a single barrier strip 1 (103) is staggered with the weight-reducing hole 2 on at least one other barrier strip 1 (103) so as not to be arranged through the width of the plate (10).

6. The lightweight plate material according to claim 4, characterized in that: The minimum value of the edge between the second weight-reducing hole and the first barrier strip (103) is greater than or equal to 1 mm, and the minimum value of the spacing between adjacent second weight-reducing holes is greater than or equal to 0.1 mm.

7. The lightweight plate material according to claim 4, characterized in that: The adhesive layer (102) is provided between the barrier strip 1 (103) and / or the barrier strip 2 (104) and the unit strip (101).

8. A lightweight base plate, characterized in that: The lightweight base plate (11) is formed by using the plate (10) described in any one of claims 1 to 7 as a base material through one or more processes such as splicing, finger jointing, and mortise and tenon jointing.

9. A lightweight composite base plate, characterized in that: The lightweight composite base plate (12) comprises a plate (10) as claimed in any one of claims 1 to 7 and a surface material (105) arranged on the surface of the plate (10).

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