Material rack

Abstract

The utility model discloses a material frame, which belongs to the technical field of logistics appliances and comprises a bottom frame, a vertical support and a turnover positioning mechanism, the vertical support is vertically mounted on the bottom frame, and the turnover positioning mechanism is mounted on the vertical support and comprises a limit block, a rotating shaft and a turnover plate. The multiple limiting blocks are arranged on the vertical support in an up-down opposite mode at intervals. The rotating shaft is rotationally installed on the vertical support and located between the two vertically-adjacent limiting blocks. The overturning plate is installed on the rotating shaft, the gravity center of the overturning plate deviates from the rotating shaft, and the overturning plate overturns up and down along with rotation of the rotating shaft, abuts against the adjacent limiting block when overturning to the horizontal position, extends to the material taking and placing channel and is used for bearing materials. And after being separated from the horizontal position, the material taking and placing channel is withdrawn. The material rack supports the materials to be taken and placed layer by layer from the top of the material rack, and then conditions are created for taking and placing the materials through a lifting appliance. By using the lifting appliance, the problem that materials with large mass or large volume are difficult to take and place on the material rack can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of logistics equipment, and specifically relates to a material rack. Background Art

[0002] Material racks, also known as shelves, are a type of logistics equipment that is mainly used for the storage and mechanized turnover of larger or heavier items. They are particularly suitable for use in manufacturing industries such as automobiles, home appliances, and mechanical hardware.

[0003] In the automobile manufacturing industry, it is often necessary to produce some large-sized cover parts. After these parts are produced from the processing line, they usually need to be stored on shelves for subsequent handling and transportation. In order to save storage space, these cover parts are mostly stored on the rack in a stacked manner. However, considering that directly stacking multiple layers of cover plates may cause problems such as extrusion and deformation of the cover plates, multiple layers of pallets or brackets are set on most racks, and the upper and lower spacing between the two adjacent layers of pallets or brackets is configured to be greater than the maximum thickness of the cover parts. In this way, different cover parts can be placed on different pallets or brackets to realize the storage of cover parts in different spaces. While saving storage space, it can ensure that the upper and lower layers of cover plates are spaced apart from each other, and problems such as extrusion and deformation will not occur, thereby solving the storage problem of large-sized cover parts.

[0004] However, when taking and placing materials, this type of rack can only be operated from the side of the rack, and cannot be directly grabbed from the top surface. This limits the use of the spreader and obviously increases the difficulty of taking and placing materials with large mass and volume. Summary of the Invention

[0005] In response to at least one of the above problems existing in the prior art, the present invention proposes a material rack with a fast flip positioning mechanism, which supports the material to be taken and placed layer by layer from the top of the material rack, creating conditions for using a sling to take and place materials.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A material rack, comprising a base frame, a vertical bracket and a flip positioning mechanism; wherein the base frame is located at the bottom of the material rack; the vertical bracket is vertically mounted on the base frame; the flip positioning mechanism comprises a limit block, a rotating shaft and a flip plate; wherein the limit blocks include a plurality of limit blocks, which are arranged on the vertical bracket opposite to each other and at intervals; the rotating shaft is rotatably mounted on the vertical bracket and is located between two upper and lower adjacent limit blocks; the flip plate is mounted on the rotating shaft, and when it flips to a horizontal position as the rotating shaft rotates, it abuts against the limit block adjacent to it and extends to a material loading and unloading channel, for carrying materials and maintaining a horizontal position under material pressure; the center of gravity of the flip plate deviates from the rotating shaft, and after the material pressure disappears, it flips freely under the action of its own gravity, breaks away from the horizontal position, and exits the material loading and unloading channel.

[0008] In some embodiments of the present application, the center of gravity of the flip plate can be configured to be located outside the rotating shaft, and the flip plate can be made to rest against the upper limit block adjacent to it when flipped to a horizontal position, and rest against the lower limit block adjacent to it after freely flipping under the action of its own gravity. At this time, the flip plate is tilted upward. On the one hand, it can exit the material loading and unloading channel so that the lower layer of material can also be taken out from the top of the material rack; on the other hand, when putting materials into the material rack, the weight of the material can be used to press down the flip plate to speed up the downward flipping speed of the flip plate, and it can be kept in a horizontal position to firmly support the material.

[0009] In some embodiments of the present application, a rotating shaft can be arranged between every two upper and lower adjacent limit blocks, and a flip plate can be installed on each rotating shaft. In this way, as many multi-layer material support points as possible can be formed to place multi-layer materials and fully utilize the rack space.

[0010] In some embodiments of the present application, the vertical support can be configured to include two separate, opposing columns vertically mounted on the base frame, with the two columns having opposing surfaces, an inner side facing the central area of ​​the base frame, and an outer side opposite the inner side. The limit blocks can be mounted on the outer sides of the two columns; the rotation axis can be mounted horizontally between the opposing surfaces of the two columns; and the flip plate can pass through the opposing surfaces of the two columns. This structural design can improve the stability of the vertical support while meeting the functional requirements.

[0011] In some embodiments of the present application, a portion of the flip plate can be configured to be located on the outside of the rotating shaft and between two adjacent upper and lower limit blocks, so as to achieve accurate limiting of the flip angle of the flip plate by the upper and lower limit blocks; another portion of the flip plate is configured to be located on the inside of the rotating shaft and extend out of the inner side of the column when the flip plate is flipped to a horizontal position, entering the material loading and unloading channel to support the material.

[0012] In some embodiments of the present application, the flip plate can be designed to be long and strip-shaped, and its bottom surface can be fixedly mounted on the rotating shaft, and the length of the part of the flip plate located outside the rotating shaft can be configured to be greater than the length of the part located inside the rotating shaft, so that the center of gravity of the flip plate is located outside the rotating shaft.

[0013] In some embodiments of the present application, positioning pins may be provided on the flip plate to engage with positioning holes on the material carried thereon, thereby improving the stability of the material carried on the flip plate.

[0014] In some embodiments of the present application, the vertical bracket may include multiple ones, which are vertically arranged along the four sides of the base frame, and a material loading and unloading channel is formed by the multiple vertical brackets, that is, the material is loaded and unloaded within the interval surrounded by the multiple vertical brackets; a set of the flip positioning mechanism can be installed on each vertical bracket respectively, so as to provide support points in multiple directions to improve the reliability and stability of material support.

[0015] In some embodiments of the present application, in order to enable the material rack to store materials of different shapes, crisscross slide rails can be set on the base frame, and a slider can be set at the bottom of the vertical bracket. The slider is slidably assembled in the slide rails, and the slider is slid to change the position of the vertical bracket on the base frame to adapt to the shape of the material.

[0016] In some embodiments of the present application, a transfer rack can be further provided on the material rack and installed on opposite sides of the base frame. The material rack can be conveniently transferred or transported by lifting or dragging the transfer rack.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are mainly reflected in:

[0018] 1. This utility model utilizes a flip positioning mechanism designed into the material rack. By utilizing the coordination of the flip plate, rotating shaft, and stopper, the flip plate can hold material when flipped to a horizontal position. After the material is removed, it automatically flips out of the material access channel. After the upper flip plate exits the access channel, the space above the lower material level is completely open, allowing the lower material level to be removed from the top of the rack.

[0019] 2. The material rack of the utility model supports the loading and unloading of materials from the top layer by layer, thereby creating conditions for the use of a spreader to load and unload materials. By using a spreader, the problem of heavy or bulky materials being difficult to load and unload on the rack can be solved.

[0020] 3. The utility model sets a flip positioning mechanism on the vertical bracket, and slides the vertical bracket on the base frame. By arranging multiple vertical brackets on the base frame, the position of each vertical bracket can be adjusted according to the different shapes of the materials, and more reasonable support points can be configured for materials of different shapes. Without the need for a pallet, the adaptability of the material rack to materials of different shapes is achieved, and the stability and reliability of the material rack in carrying materials of different shapes are improved.

[0021] 4. The material rack of the utility model adopts a frame structure as a whole, which is light in weight and easy to carry. At the same time, it has low cost and is easy to promote and apply.

[0022] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without inventive work.

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the material rack proposed by the present utility model;

[0025] Figure 2 yes Figure 1 A schematic structural diagram of an embodiment of the vertical bracket;

[0026] Figure 3 yes Figure 2 A schematic structural diagram of the vertical bracket shown in another perspective;

[0027] Figure 4 yes Figure 1 A schematic structural diagram of an embodiment of a flip positioning mechanism;

[0028] Figure 5 yes Figure 4 A structural schematic diagram of the flip positioning mechanism from another perspective;

[0029] Figure 6 yes Figure 4 Schematic diagram of the structure when the flip plate is flipped to the horizontal position;

[0030] Figure 7 yes Figure 4 A schematic diagram of the structure when the flip plate is flipped to an inclined position;

[0031] Figure 8 yes Figure 1 A structural diagram of an embodiment of the chassis in FIG.

[0032] Figure 9 It is a structural schematic diagram of an embodiment of a cover plate part;

[0033] Figure 10 Is to put multiple Figure 9 The cover parts shown are stored in Figure 1 A schematic structural diagram of an embodiment of the material rack is shown.

[0034] In the figure, 100, base frame; 110, support frame; 120, track frame; 130, transfer frame; 200, vertical bracket; 210, column; 211, inner side surface; 212, outer side surface; 213, opposite side; 220, column; 221, inner side surface; 222, outer side surface; 223, opposite side; 300, flip positioning mechanism; 310, limit block; 311, upper limit block; 312, lower limit block; 320, rotating shaft; 330, flip plate; 331, outer end of flip plate; 332, inner end of flip plate; 400, cover plate part. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "up", "down", "inside", "outside", "top", "bottom", "horizontal", "vertical", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0037] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or internal connections within components. Those skilled in the art can understand the specific meanings of the above terms in this utility model based on specific circumstances. In the description of the embodiments, specific features, structures, materials, or characteristics may be combined in any appropriate manner in any one or more embodiments or examples.

[0038] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0039] like Figure 1 As shown, the material rack of this embodiment mainly includes components such as a base frame 100, a vertical bracket 200, and a flip positioning mechanism 300.

[0040] The base frame 100 serves as the overall bearing unit of the entire rack and is disposed at the bottom of the rack to support the vertical bracket 200 and other components.

[0041] In some embodiments, the base frame 100 can be designed as a frame structure to reduce the overall weight of the rack and facilitate transportation and transfer.

[0042] A vertical support 200 is vertically mounted on the base frame 100 , and a flip positioning mechanism 300 is mounted on the vertical support 200 . The flip positioning mechanism 300 is used to provide a support point for the material, thereby enabling the material to be stored in the material rack.

[0043] In certain embodiments, as Figure 2 、 Figure 3 As shown, the vertical support 200 may include two columns 210, 220. The two columns 210, 220 are arranged parallel to each other, spaced apart from each other, and are vertically mounted on the base frame 100 to improve the reliability of the flip positioning mechanism 300 thereon.

[0044] In some embodiments, the two columns 210 and 220 can be designed as long rectangular columns with a square cross-section, including a bottom surface, a top surface, and four side surfaces. The bottom surfaces of the two columns 210 and 220 are mounted on the base frame 100, and the top surfaces face upward to form free ends. For clarity, the four side surfaces are defined as follows: the side facing the middle area of ​​the base frame 100 is the inner side surface 211 and 221, the side facing away from the inner side surface 211 and 212 is the outer side surface 212 and 222, and the sides of the two columns 210 and 220 facing each other are the opposite sides 213 and 223.

[0045] In this embodiment, the height of the columns 210 and 220 determines the height of the rack, and the specific height of the columns 210 and 220 can be determined according to actual needs (such as the number of layers of the rack and the height between layers).

[0046] The flip positioning mechanism 300 is installed on the two columns 210 and 220, as shown in FIG. Figure 4 As shown, it specifically includes main components such as a limit block 310, a rotating shaft 320, and a flip plate 330.

[0047] The limiting block 310 can be designed as a long rectangle and horizontally mounted on the two columns 210 and 220 , that is, spanning the two columns 210 and 220 , so as to improve the firmness of the installation of the limiting block 310 .

[0048] In certain embodiments, as Figure 2 As shown, the limit blocks 310 can be installed on the outer side surfaces 212, 222 of the two columns 210, 220, and multiple limit blocks 310 can be horizontally installed on the outer side surfaces 212, 222 of the two columns 210, 220, and the limit blocks 310 are arranged to be opposite to each other and spaced apart from each other, so that the columns 210, 220 and the limit blocks 310 form a ladder-like structure.

[0049] like Figure 5 As shown, the distance D between two upper and lower adjacent limit blocks 311 and 312 is configured to be greater than the thickness of the material, so that the material can be stacked up and down in the material rack without overlapping.

[0050] The rotating shaft 320 is rotatably mounted on the two columns 210 and 220 and is located between two upper and lower adjacent limiting blocks 311 and 312 .

[0051] In some embodiments, the rotating shaft 320 can be rotatably installed between the opposite surfaces 213 and 223 of the two columns 210 and 220, and a rotating shaft 320 is installed between every two upper and lower adjacent limit blocks 311 and 312, and a flip plate 330 is installed on each rotating shaft 320. The number of flip plates 330 determines the number of layers of the material rack.

[0052] The rotating shaft 320 can be designed as a cylindrical rotating shaft, arranged horizontally, with shaft sleeves installed at both ends, and installed on the opposite surfaces 213 and 223 of the two columns 210 and 220 through the shaft sleeves, so that the rotating shaft 320 can rotate freely relative to the two columns 210 and 220.

[0053] The flip plate 330 is mounted on the rotating shaft 320 and the center of gravity of the flip plate 330 is configured to deviate from the rotating shaft 320 so that the flip plate 330 can flip up and down under the action of its own gravity and drive the rotating shaft 320 to rotate with it.

[0054] In some embodiments, the flip plate 330 can be designed to be long strips, such as Figure 5As shown, it is configured to pass between the opposite surfaces 213, 223 of the two columns 210, 220. A portion of the flip plate 330 is located outside the rotation axis 320 and between the two upper and lower adjacent limit blocks 311, 312. The end of this portion can be defined as the outer end 331 of the flip plate. Another portion of the flip plate 330 is located inside the rotation axis 320, and when the flip plate 330 flips to the horizontal position, it can extend out of the inner side surfaces 211, 221 of the columns 210, 220, and in combination with the flip plate 330, the flip plate 330 can be rotated to the horizontal position. Figure 6 As shown, the end of this portion can be defined as the inner end 332 of the flip plate. That is, when the flip plate 330 is flipped to the horizontal position, its inner end 332 extends beyond the inner side surfaces 211 and 221 of the columns 210 and 220 and toward the middle area closer to the base frame 100. In other words, the inner end 332 of the flip plate 330 can extend below the material 400 to support the material 400.

[0055] The bottom surface of the flip plate 330 can be fixedly mounted on the rotating shaft 320, and the length of the portion of the flip plate 330 located outside the rotating shaft 320 is configured to be greater than the length of the portion of the flip plate 300 located inside the rotating shaft 320. In this way, the center of gravity of the flip plate 330 can be located outside the rotating shaft 320, so that the flip plate 330 can flip counterclockwise under the action of its own gravity, that is, the inner end 332 of the flip plate flips up and the outer end 331 flips down, so that the flip plate 330 is positioned in an inclined state with the inner end 332 tilted up, as shown in FIG. Figure 7 With this configuration, the material 400 lowered from the top of the rack can press down on the inner end 332 of the flip plate, thereby accelerating the clockwise flipping speed of the flip plate 330, allowing the flip plate 330 to quickly flip to a horizontal position to carry the material 400. The weight of the material 400 can also be used to keep the flip plate 330 in a horizontal position, thereby reliably carrying the material 400.

[0056] In order to accurately position the flipping angle of the flip plate 330, the distance between the rotating shaft 320 and the upper limit block 311 adjacent to and located above the flip plate 330 can be configured in combination with the thickness of the flip plate 330, so that when the flip plate 330 is flipped to the horizontal position, the top surface of the flip plate 330 can just abut against the upper limit block 311 adjacent to it. Figure 6 As shown, the upper limit block 311 serves as a stopper to limit the turning plate 330 from turning further and maintain it in a horizontal position, thereby achieving stable support for the material 400 .

[0057] In combination with the length of the flip plate 330, the distance between the rotating shaft 320 and the limit block 312 adjacent to and located below it is configured so that the flip plate 330 can flip freely under the action of its own gravity, and when its outer end 331 abuts against the lower limit block 312 adjacent to it, the inner end 331 of the flip plate can move between the opposite surfaces 213, 223 of the two columns 210, 220, or only extend slightly from the inner side surfaces 211, 221 of the two columns 210, 220, so that the flip plate 330 can completely withdraw from the material loading and unloading channel, so that the lower layer of material 400 can pass over the flip plate 330 located above it and be smoothly taken out from the top of the material rack.

[0058] To further enhance the reliability of material storage within the rack, positioning pins can be provided on the flip plate 330. For certain materials equipped with positioning holes, when placing the material on the flip plate 330, the positioning holes on the material can be aligned with the positioning pins on the flip plate 330. The positioning pins can then be inserted into the positioning holes to secure the material to the flip plate 330. This structural design prevents the material from falling off the rack even if it tips over, effectively protecting the material to a certain extent.

[0059] In order to improve the stability of the support for the material 400, in this embodiment, at least one vertical bracket 200 is vertically installed in the front, rear, left and right directions of the base frame 100. Figure 1 As shown, each vertical support 200 is respectively installed with a set of the flip positioning mechanism 300. A plurality of vertical supports 200 are distributed around the base frame 100 to form a passage for taking and placing materials 400.

[0060] Considering that different materials have different sizes and shapes, some materials are not even regular shapes, but unpredictable shapes, such as Figure 9 In order to make the material rack adaptable to materials of various shapes and sizes, the present embodiment designs the base frame 100 and the vertical brackets 200 into a movable assembly relationship. By adjusting the vertical position of each vertical bracket 200 on the base frame 100, the shape and size of the material access channel surrounded by each vertical bracket 200 can be adapted to the shape and size of the material to be stored in the material rack. In this way, the material can be supported at multiple points by the flip plate 330, thereby improving the stability and reliability of the material stored in the material rack.

[0061] Specifically, if Figure 8 As shown, an upright support frame 110 and a horizontal track frame 120 can be provided in the base frame 100. The support frame 110 is installed below the track frame 120 to support the track frame 120 so that the track frame 120 is a distance away from the ground.

[0062] In some embodiments, the track frame 120 can be formed by connecting multiple slide rails in a crisscross pattern. In order to enable the vertical bracket 200 to move on the base frame 100, a slider can be installed at the bottom of the two columns 210 and 220 of the vertical bracket 200, and then the slider is slidably assembled in the slide rails of the track frame 120. By sliding the slider, the position of the vertical bracket 200 on the base frame 100 can be changed, thereby adapting to various shapes of different materials, such as Figure 10 shown.

[0063] In order to facilitate the transport of the rack, a transport rack 130 may be further installed on the base rack 100. Figure 8 For example, a transfer rack 130 may be installed on opposite sides of the base frame 100 in the length direction to facilitate lifting or dragging.

[0064] In some embodiments, the transport rack 130 can be designed as a height-adjustable gantry to reduce the overall weight of the rack and facilitate handling. Furthermore, the height-adjustable gantry can be adapted to different transport tools.

[0065] Industrial Applicability

[0066] Before placing the material into the material rack, first adjust the position of the vertical bracket 200 on the base frame 100 according to the outer contour of the material, so that the shape of the material loading and unloading channel surrounded by the vertical brackets 200 distributed around the base frame 100 can be adapted to the outer contour of the material.

[0067] For example, if the material 400 placed in the rack is Figure 9 The cover parts shown in the figure can adjust the positions of the vertical brackets 200 on the base frame 100 as shown in the figure. Figure 1 This ensures that the flip plate 330 on each vertical support 200 can support the material 400. By distributing the support points around the material 400, the stability and firmness of the support for the material 400 can be improved.

[0068] Turn the flip plate 330 located at the bottom of the vertical support 200 clockwise until the top surface of the flip plate 330 abuts against the upper limit block 311 adjacent thereto. Figure 6 At this time, the flip plate 330 at the bottom layer flips to a horizontal position, and its inner end 332 extends into the material access channel to restrict the material 400 from continuing to descend.

[0069] A material 400 is lowered from the top of the material rack along the material loading and unloading channel until it contacts the flip plate 330 at the bottom layer. The flip plate 330 is pressed down by the weight of the material 400 itself to keep the flip plate 330 in a horizontal position to support the bottom surface of the material 400.

[0070] Then, the turning plate 330 located at the second-to-last layer of the vertical support 200 is turned over, and the second material 400 is placed down to be pressed down and supported on the turning plate 330 at the second-to-last layer.

[0071] The same process is repeated until the material 400 is placed on the top flip plate 330 of the vertical support 200, and the material rack is filled. Figure 10 shown.

[0072] If there is still 400 materials to be stored, you can replace an empty rack and continue to put them in according to the above steps.

[0073] When it is necessary to take out the material 400 from the rack, the material 400 at the top of the rack is first lifted up and taken out from the top of the rack. At this time, the pressure on the flip plate 330 at the top of the vertical support 200 disappears, and the flip plate 330 flips counterclockwise under the action of its own gravity, leaving the horizontal position and tilting upward, as shown in FIG. Figure 7 At this time, the turning plate 330 leaves the material taking and placing channel, making room above the material 400 for the lower layer.

[0074] The same method is used to lift up the materials 400 in each layer in the material rack from top to bottom in sequence, so that the turning plates 330 of each layer on the vertical support 200 are automatically reset.

[0075] Of course, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A material rack, characterized in that: include: A bottom frame, which is located at the bottom of the material rack; A vertical bracket, which is vertically mounted on the base frame; The flip positioning mechanism comprises: The limiting blocks include a plurality of limiting blocks, which are arranged on the vertical support in an opposed and spaced relationship. A rotating shaft is rotatably mounted on the vertical bracket and is located between two upper and lower adjacent limit blocks; The flip plate is installed on the rotating shaft. When it flips to a horizontal position as the rotating shaft rotates, it abuts against the limit block adjacent to it and extends to the material loading and unloading channel, and is used to carry the material and maintain a horizontal position under the pressure of the material; the center of gravity of the flip plate deviates from the rotating shaft. After the material pressure disappears, it flips freely under the action of its own gravity, leaves the horizontal position, and exits the material loading and unloading channel.

2. The material rack according to claim 1, characterized in that: The center of gravity of the flip plate is located outside the rotation axis. When the flip plate flips to a horizontal position, it abuts against the upper limit block adjacent to it. After freely flipping under the action of its own gravity, it abuts against the lower limit block adjacent to it.

3. The material rack according to claim 1, characterized in that: A rotating shaft is arranged between each two upper and lower adjacent limit blocks; A turning plate is respectively installed on each of the rotating shafts.

4. The material rack according to claim 1, characterized in that: The vertical support comprises two columns that are separated and opposite to each other and vertically mounted on the base frame, the two columns having opposite surfaces facing each other, an inner side facing the middle area of ​​the base frame, and an outer side facing away from the inner side; The limit blocks are installed on the outer sides of the two columns; The rotating shaft is horizontally installed between the opposite surfaces of the two columns; The turnover plate passes between the opposite surfaces of the two columns.

5. The material rack according to claim 4, characterized in that: A portion of the flip plate is located outside the rotation axis and between two upper and lower adjacent limit blocks, and another portion is located inside the rotation axis and extends out of the inner side of the column when the flip plate flips to a horizontal position.

6. The material rack according to claim 5, characterized in that: The flip plate is in the shape of an elongated strip, and its bottom surface is fixedly mounted on the rotating shaft. The length of the portion of the flip plate located outside the rotating shaft is greater than the length of the portion located inside the rotating shaft, so that the center of gravity of the flip plate is located outside the rotating shaft.

7. The material rack according to claim 1, characterized in that: The flip plate is provided with a positioning pin for engaging with a positioning hole on the material carried thereon.

8. The material rack according to any one of claims 1 to 7, characterized in that The vertical supports include a plurality of vertical supports arranged vertically along the periphery of the base frame, and the plurality of vertical supports enclose the material taking and placing channel; A set of the flip positioning mechanism is respectively installed on each of the vertical supports.

9. The material rack according to claim 8, characterized in that: The base frame is provided with crisscrossing slide rails; A slider is provided at the bottom of the vertical bracket. The slider is slidably assembled in the slide rail. The position of the vertical bracket on the base frame is changed by sliding the slider to adapt to the shape of the material.

10. The material rack according to any one of claims 1 to 7, characterized in that Also includes: The transfer rack is installed on the opposite sides of the base frame and is used to lift or drag the material rack to transfer the site.

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