Three-dimensional goods shelf suitable for single-layer storage of pipe parts

Abstract

The utility model relates to the technical field of stereoscopic warehouses, and discloses a stereoscopic goods shelf suitable for single-layer storage of pipe parts, which comprises a stand column and a support rod connected with the stand column, the support rod is used for bearing a steel pipe, a V-shaped groove is formed at one end of the support rod far away from the stand column, and the groove forms a cavity for placing the steel pipe; the groove forms a bottom face parallel to the bearing face of the supporting rod, the distance between the bottom face and the bearing face is the depth H5, the maximum value of the diameter D of the steel pipe is Dmax, and the relation between the depth H5 and the maximum value of the diameter D of the steel pipe is # imgabs0 #. The V-shaped groove is formed in the tail end of the supporting rod to limit the steel pipe in the supporting rod to move towards the tail end, the depth of the groove is # imgabs 1 #, the steel pipe in the groove is prevented from rotating relative to the tail end and being separated from the supporting rod under the impact of the steel pipe on the left side of the groove, and the steel pipe in the groove can limit the steel pipe on the bearing face of the supporting rod to move towards the tail end. Under the condition that the tail ends of the supporting rods limit the steel pipes, the stop rods are omitted, the storage height between the supporting rods is reduced, and the space utilization rate of the embodiment is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of stereoscopic warehouses, in particular to a stereoscopic shelf suitable for single-layer storage of pipe parts. Background Art

[0002] In the petrochemical industry, pipe raw materials have various specifications and long lengths. Traditionally, they are stacked on the ground or stored on simple shelves, resulting in low space utilization and time-consuming material retrieval. The existing solution is to use high-bay warehouses to utilize vertical space to increase storage capacity. High-bay warehouses include high-bay shelves, conveying and handling equipment, and control systems.

[0003] The Chinese patent CN105347055B has been published. A loading and unloading device discloses an existing three-dimensional shelf structure in the specification, such as Figure 1 As shown, the three-dimensional shelf includes a number of columns relatively arranged along the length direction of the steel pipe, and the columns are symmetrically provided with support arms extending left and right on the left and right sides respectively. There are multiple support arms and they are arranged in parallel in the vertical direction to form a multi-layer structure. The corresponding support arms on the two columns along the length direction of the steel pipe are used to support the two ends of the steel pipe respectively. The end of the support arm away from the column is provided with a barrier rod for preventing the steel pipe from detaching from the support arm. For the convenience of the following description, the distance between the support arms of adjacent layers is defined here as the storage height H1. Although this type of three-dimensional shelf can improve space utilization, it is limited by the barrier rod height H4. When the conveying and handling equipment transports the steel pipe from the support arm of the middle layer, it needs to additionally lift the steel pipe upward to the top of the barrier rod so that the steel pipe can be freed from the restriction of the barrier rod, so that the storage height H1 includes the barrier rod height H4, which increases the overall height of the three-dimensional shelf and reduces the space utilization of the three-dimensional shelf. Utility Model Content

[0004] In order to further improve the space utilization of the three-dimensional shelf, the utility model provides a three-dimensional shelf suitable for single-layer storage of pipe parts. The specific technical solution is as follows:

[0005] A three-dimensional shelf suitable for single-layer storage of pipe parts includes columns and a plurality of support rods connected to the columns. The support rods are used to support a single layer of steel pipes. The ends of the support rods away from the columns form a V-shaped groove, which forms a cavity for placing the steel pipes to form a limiting structure for limiting the position of the single layer of steel pipes. The groove forms a bottom surface parallel to the bearing surface of the support rods. The distance between the bottom surface and the bearing surface is a depth H5. The maximum value of the diameter D of the steel pipe is Dmax. The relationship between the two is: .

[0006] Furthermore, the groove also forms a left oblique surface connected to the bottom surface and the bearing surface at both ends, and the angle ɑ of the left oblique surface relative to the bottom surface is .

[0007] Preferably, the angle ɑ of the left oblique surface relative to the bottom surface is, .

[0008] Furthermore, the groove also forms a right inclined surface with two ends connected to the bottom surface and the end of the support rod respectively. The angle β of the right inclined surface relative to the bottom surface is .

[0009] Preferably, the angle β of the right slope relative to the bottom surface is, .

[0010] Preferably, the distance between the support rods of adjacent layers is the storage height H7, the thickness of the support rod at the groove is H6, the distance between the bearing surface of the support rod and the bottom surface of the upper support rod is the lifting height H8, and the relationship between the storage height H7, lifting height H8, thickness H6 and depth H5 is: H7=H8+H5+H6, where the lifting height H8>maximum diameter Dmax.

[0011] Preferably, the bearing surface rotates relative to the horizontal plane toward the column by an angle ω, .

[0012] Preferably, the rotation angle .

[0013] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0014] The utility model sets a V-shaped groove at the end of the support rod to limit the movement of the steel pipe placed therein to the end, and the depth of the groove is , to prevent the steel pipe in the groove from rotating relative to the end under the impact of the steel pipe on its left side and then detaching from the support rod, so that the steel pipe in the groove can limit the steel pipe on the bearing surface of the support rod from moving toward the end, and then the end of the support rod retains the limit on the steel pipe, the barrier rod is cancelled, and the storage height between the support rods is reduced, thereby improving the space utilization rate of this embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view of a three-dimensional shelf in the prior art;

[0016] Figure 2 This is a side view of an embodiment of the utility model in which steel pipes of different diameters are placed on one side;

[0017] Figure 3 for Figure 2 A magnified view of the structure at point A;

[0018] Figure 4 for Figure 2 A magnified view of the structure at point B in FIG.

[0019] In the figure: 1. column; 2. support arm; 3. baffle rod; 4. support rod; 41. bearing surface; 42. groove; 43. left inclined surface; 44. right inclined surface; 45. bottom surface; 5. steel pipe; 53. steel pipe A; 54. steel pipe B; 55. steel pipe C; 56. steel pipe D; 57. steel pipe E. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. 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 orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0022] The front-to-back direction in this embodiment is consistent with the length direction of the steel pipe 5 .

[0023] like Figure 2 and Figure 3 As shown, this embodiment is a three-dimensional shelf suitable for single-layer storage of pipe parts, which includes a column 1 and a plurality of support rods 4 connected to the column 1. The support rod 4 is used to support a single layer of steel pipes 5. The end of the support rod 4 away from the column 1 forms a V-shaped groove 42. The groove 42 forms a cavity for placing the steel pipe 5 to form a limiting structure for limiting the position of the single layer of steel pipes 5; the groove 42 forms a bottom surface 45 parallel to the supporting surface 41 of the support rod 4. The distance between the bottom surface 45 and the supporting surface 41 is a depth H5. The maximum value of the diameter D of the steel pipe 5 is Dmax. The relationship between the two is: .

[0024] Specifically, this embodiment cooperates with the handling equipment to carry out the storage or outbound transportation of steel pipes 5 of different diameters, thereby realizing the storage management of the steel pipes 5. The handling equipment is a commonly used equipment in this field, which includes a horizontal moving mechanism, a lifting and moving mechanism and a mobile fork. The mobile fork can realize spatial movement in the three-dimensional warehouse under the drive of the horizontal moving mechanism and the lifting and moving mechanism. The mobile fork is lifted to a certain height of this embodiment and moved horizontally to place the steel pipe 5 on it for storage. When the steel pipe 5 is separated from the mobile fork and contacts the support rod 4, it will roll left and right, and its rolling direction is the radial direction of the steel pipe 5.

[0025] Secondly, the column 1 is placed vertically on the ground, and in this embodiment, multiple columns 1 are set along the length direction of the steel pipe 5. The number of columns 1 is determined according to the length of the steel pipe 5 and the size of the warehouse. The height of the column 1 is determined according to the height of the warehouse. The left and right sides of the column 1 are respectively fixed with support rods 4 by bolts, and in this embodiment, several layers of parallel support rods 4 are set along the height direction. The width of the support rod 4 is determined according to the maximum diameter of the steel pipe 5, the number of steel pipes 5 and the size of the warehouse. The width direction of the support rod 4 is consistent with the radial direction of the steel pipe 5. The number of layers of the support rod 4 is determined according to the height of the column 1, the number of steel pipes 5 and the size of the warehouse. The preferred embodiment includes six layers of support rods 4; wherein the cross-section of the support rod 4 is I-shaped, which can enhance the bending strength of the support rod 4, and then increase the width of the support rod 4 to increase the number of steel pipes 5 that can be carried, thereby improving space utilization; the thickness direction of the support rod 4 is the height direction of the column 1, and its thickness is determined according to the total weight of the steel pipes 5 carried, to avoid the support rod 4 from bending under the action of the steel pipe 5, causing the steel pipe 5 to roll or even detach from the support rod 4. The number of the above-mentioned columns 1, the height of the columns 1, the width of the support rods 4, the number of layers of the support rods 4, and the thickness of the support rods 4 all need to be determined based on multiple factors such as the three-dimensional size of the stereoscopic warehouse, the maximum diameter of the steel pipes 5, the length of the steel pipes 5, and the weight of the steel pipes 5. These are values determined by those skilled in the art based on actual conditions and experience. Secondly, the single-layer support rods 4 in this embodiment only carry a single layer of steel pipes 5, and the single-layer steel pipes 5 are single-layer steel pipes to avoid squeezing the steel pipes 5 when stacking multiple layers of steel pipes 5, which affects the surface quality of the steel pipes 5. The diameter of the steel pipes 5 is a range value. The single-layer support rods 4 in this embodiment store steel pipes 5 of the same diameter, and support rods 4 of different layers can store steel pipes 5 of different diameters, such as Figure 2 The diameter of the steel pipes stored in the support rods 4 of the lowest layer is smaller than the diameter of the steel pipes stored in the support rods 4 of the second lowest layer.

[0026] Figure 2It shows a side view of the column 1 and the support rod 4 on the right side, wherein the support rod 4 on the left side and the support rod 4 on the right side are symmetrical about the longitudinal center plane F of the column 1. Among them, the support rod 4 forms a bearing surface 41, which is used to bear a single layer of steel pipe 5. A groove 42 is formed at the end of the support rod 4 away from the column 1. When the moving fork carries the single layer of steel pipe 5 to the bearing surface 41 and gradually moves downward, part of the steel pipe 5 is placed on the bearing surface 41, and part of the steel pipe 5 is placed in the cavity formed by the groove 42, and then the height of the steel pipe 5 gradually decreases from the bearing surface 41 to the groove 42. The height of the steel pipe 5 located on the bearing surface 41 relative to the column 1 is greater than the height of the steel pipe 5 located in the groove 42. The steel pipe 5 with the lowest height is defined as the low steel pipe, and the steel pipes on the left side of the low steel pipe are all higher than the height of the low steel pipe, which is defined as the high steel pipe. Therefore, the height of the low steel pipe is lower than the height of the high steel pipe, and the low steel pipes are all placed in the groove 42 for limitation. Therefore, the low steel pipes can limit the adjacent steel pipes on the left. Among them, the cross-section of the groove 42 is V-shaped. It is known from common sense that the V-shaped groove 42 includes at least a bottom surface 45 and left and right ends. The bottom surface 45 is parallel to the bearing surface 41, the left end is connected to the support rod 4 forming the bearing surface 41, and the right end is connected to the end of the support rod 4. Therefore, the left and right ends of the groove 42 can exert a lateral force on the lower steel pipe placed therein, which can form a limiting effect on the movement of the lower steel pipe to the left and right sides. Secondly, the gravity of the lower steel pipe limits its upward movement, thereby preventing the lower steel pipe from escaping from the groove 42 during rolling back and forth, and then escaping from the groove 42 during movement to the right side of the groove 42, falling and causing an accident. Therefore, the groove 42 can limit the lower steel pipe from escaping from itself, thereby forming a limiting effect on it. Function; secondly, when the high steel pipe moves to the right to squeeze the low steel pipe, when the low steel pipe is limited by the right end of the groove 42, it can limit the high steel pipe from continuing to move to the right, and the high steel pipes on the right can limit the adjacent high steel pipes on the left, and then the groove 42 can limit all the steel pipes 5 on the single-layer support rod 4 from falling from the end of the support rod 4, thereby realizing the limitation of all steel pipes 5, and because the height of the low steel pipe is lower than the height of the high steel pipe, the storage height H7 of this embodiment is smaller than the storage height H1 in the prior art, thereby increasing the number of support rods 4 layers that can be set on the unit column 1, thereby improving the space utilization rate of this embodiment, and thereby increasing the total number of steel pipes 5 that can be carried by this embodiment.

[0027] Figure 3The structural diagram shows the support rod 4 of the second bottom layer carrying the steel pipe 5 with the largest diameter, whose diameter is Dmax. The lower steel pipe in contact with the right end of the groove 42 is defined as steel pipe A53, and the adjacent steel pipe 5 on its left is defined as steel pipe B54. Specifically, when the handling equipment places the steel pipe 5 in the groove 42, the steel pipe 5 with the maximum diameter Dmax will roll back and forth in the left and right directions, and then the steel pipe B54 will apply an instantaneous impact force F1 to the steel pipe A53 when rolling to the right. The instantaneous impact force F1 makes the steel pipe A53 contact the right end of the groove 42, and the contact point is P. The instantaneous impact force F1 applies a rotational torque W1 on the steel pipe A53 to roll relative to the right end of the groove 42. The force arm of the rotational torque W1 is the distance between the line of action of the instantaneous impact force F1 and the contact point P. At the same time, the gravity G1 of the steel pipe A53 applies an anti-rotational torque W2 to it. The force arm of the anti-rotational torque W2 is the distance between the line of action of the gravity G1 and the contact point P. W1 and W2 drive the steel pipe A53 to rotate in opposite directions.

[0028] when When the torque W1 is larger than the anti-rotation torque W2, the steel pipe A53 rotates relative to the right end of the groove 42, and then separates from the groove 42 and falls from the support rod 4, causing a production accident. Therefore, the relationship between the steel pipe 5 with a diameter of Dmax and the depth H5 of the groove 42 is limited, which can prevent the steel pipes 5 of other diameters from separating from the groove 42 and falling from the end of the support rod 4, thereby improving the space utilization of this embodiment and ensuring the limiting effect of the groove 42.

[0029] like Figure 3 and Figure 4 As shown, Figure 4 The diameter D of the steel pipe 5 is smaller than Dmax. The groove 42 also forms a left inclined surface 43 connected to the bottom surface 45 and the bearing surface 41 at both ends. The angle ɑ of the left inclined surface 43 relative to the bottom surface 45 is .

[0030] It is common knowledge that torque is equal to the product of the applied force and the lever arm. The following only compares the torques to determine the motion state of the steel pipe 5, and does not involve the calculation process of the torque. The specific calculation process belongs to the common sense of those skilled in the art.

[0031] Specifically, the side surface of the left end of the groove 42 close to the steel pipe 5 is a left inclined surface 43, which is connected to the bottom surface 45 and the bearing surface 41 respectively. The upper steel pipe closest to the lower steel pipe is positioned as steel pipe C55, and the steel pipe C55 is tangent to the left inclined surface 43. The steel pipe 5 adjacent to the upper left is positioned as steel pipe D56. The lower steel pipe closest to the upper steel pipe is defined as steel pipe E57. Steel pipe D56 exerts an instantaneous impact force F3 on steel pipe C55 to squeeze steel pipe E57. The impact force F3 exerts a rotational torque W3 on steel pipe C55, causing it to roll relative to steel pipe E57. The lever arm of rotational torque W3 is the distance from the point of tangency between steel pipes C55 and E57 to the line of action of the instantaneous impact force F3. Simultaneously, the gravity G of steel pipe C55 exerts a torque W4 on it, with the lever arm of torque W4 being the distance from the point of tangency between steel pipes C55 and E57 to the line of action of gravity G. W3 and W4 drive steel pipe C55 in opposite directions of rotation. The larger the angle α, the larger the horizontal width L2 of the left bevel 43, the flatter the left bevel 43 becomes, and the greater the ratio of the width of the groove 42 to the width of the support rod 4. The smaller the angle α, the smaller the horizontal width L2 of the left bevel 43, the steeper the left bevel 43 becomes, W4 decreases, and W3 increases.

[0032] when hour, , the steel pipe C55 rotates relative to the steel pipe E57, so that the steel pipe C55 is superimposed on the lower steel pipe, and the groove 42 loses the limit of the steel pipe C55 after the movement, thereby causing the limit of the groove 42 to fail; when As L2 increases, the width of the groove 42 increases, but the thickness of the groove 42 is less than the thickness of the support rod 4 at the bearing surface 41, thereby reducing the overall average thickness of the support rod 4, thereby reducing the bending strength of the support rod 4, and easily causing the support rod 4 to bend and deform around the column 1, causing the steel pipe 5 to roll off the support rod 4, resulting in a production accident.

[0033] Furthermore, the groove 42 also forms a right inclined surface 44 whose two ends are connected to the bottom surface 45 and the end of the support rod 4 respectively. The right inclined surface 44 has an angle β relative to the bottom surface 45. .

[0034] Specifically, the side surface at the right end of the groove 42, near the steel pipe 5, is a right bevel 44, which is connected to the bottom surface 45 and the terminal vertex of the support rod 4, respectively, thereby improving the space utilization in the width direction of the support rod 4. The lowest steel pipe closest to the right bevel 44 is steel pipe A53, which is also located at the rightmost end of the groove 42. As the steel pipe 5 on the left side of steel pipe A53 moves to the right, it pushes steel pipe A53 into contact with the right bevel 44. The larger the angle β, the larger the horizontal width L1 of the right bevel 44, the flatter the right bevel 44, and the larger the ratio of the width of the groove 42 to the width of the support rod 4. The smaller the angle β, the smaller the horizontal width L1 of the right bevel 44, and the thinner the thickness of the right end of the groove 42.

[0035] when When the thickness of the right end of the groove 42 is too thin, its strength is reduced, and the maximum resistance it exerts on the steel pipe A53 is reduced. There is a risk of fracture at the right end of the groove 42, resulting in limit failure; when When the width of the groove 42 increases, the thickness of the groove 42 is less than the thickness of the support rod 4 at the bearing surface 41, thereby reducing the average thickness of the support rod 4 as a whole, thereby reducing the bending strength of the support rod 4, and easily causing the support rod 4 to bend and deform around the column 1, causing the steel pipe 5 to roll off the support rod 4, resulting in a production accident.

[0036] Furthermore, the distance between the support rods 4 of adjacent layers is the storage height H7, the thickness of the support rod 4 at the groove 42 is H6, the distance between the bearing surface 41 of the support rod 4 and the bottom surface 45 of the upper support rod 4 is the lifting height H8, and the relationship between the storage height H7, the lifting height H8 and the depth H5 is: H7=H8+H5+H6, where the lifting height H8>maximum diameter Dmax.

[0037] Specifically, the sum of H6 and H5 is the thickness of the support rod 4 at the bearing surface 41. As can be seen from the above, it is a fixed value. When the maximum diameter Dmax of the steel pipe 5 is determined, the minimum value of the depth H5 can be determined, and then the maximum value of the thickness H6 can be determined. The lifting height H8 refers to the sum of the height h when the mobile fork separates the steel pipe 5 from the bearing surface 41 and transports it to another location and the diameter of the steel pipe 5. Since the maximum diameter of this embodiment is Dmax, it can be seen that the lifting height H8 is the sum of Dmax and h. The minimum value of the height h is determined by those skilled in the art based on the moving accuracy of the mobile fork and other factors to ensure that the steel pipe 5 does not interfere with the support rod 4 during the process of the mobile fork transporting the steel pipe 5. It is determined based on actual production.

[0038] In actual production, , which is set according to specific working conditions. As can be seen, when the thickness, maximum diameter Dmax, and h of the support rod 4 on the bearing surface 41 are determined, the storage height H7 can be determined. To improve the space utilization in the height direction of the column 1, the storage height H7 needs to be reduced as much as possible, thereby increasing the number of layers of support rods 4.

[0039] Furthermore, the bearing surface 41 rotates relative to the horizontal plane toward the column 1 by an angle ω. .

[0040] Specifically, the bearing surface 41 is parallel to the bottom surface 45 and the bottom surface of the support rod 4. Therefore, the rotation angle between the bottom surface of the support rod 4 and the horizontal plane in the direction of the column 1 is the rotation angle of the bearing surface 41, and the rotation angle is ω. , the bearing surface 41 and the bottom surface 45 in the figure are rotated clockwise relative to the horizontal plane, so that the steel pipe 5 moves to the right side of the groove 42, causing the contact point P to move downward, thereby increasing W1 and reducing W2, thereby reducing the restraining effect of the right end of the groove 42 on the steel pipe 5. At the same time, the design of clockwise rotation relative to the horizontal plane does not conform to the design common sense of those skilled in the art. Those skilled in the art usually do not design in this way, which reduces the limiting effect of the groove 42; when When the load-bearing surface 41 and the bottom surface 45 in the figure rotate counterclockwise relative to the horizontal plane, the steel pipes 5 move toward the left end of the support rod 4, that is, the column 1, which makes the extrusion pressure between the steel pipes 5 too large, causing the surface of the steel pipes 5 to become concave and uneven, reducing its surface quality.

[0041] In a preferred embodiment, the angle of the left inclined surface 43 relative to the bottom surface 45 is , the angle of the right inclined surface 44 relative to the bottom surface 45 , rotation angle , thereby maximizing the limiting effect of the groove 42 while reducing the impact on the surface quality of the steel pipe 5.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0043] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

Claims

1. A three-dimensional shelf suitable for single-layer storage of pipe parts, the three-dimensional shelf comprising a column (1) and a plurality of support rods (4) connected to the column (1), characterized in that: The support rod (4) is used to support a single layer of steel pipes (5), and a V-shaped groove (42) is formed at one end of the support rod (4) away from the column (1). The groove (42) forms a cavity for placing the steel pipe (5) to form a limiting structure for limiting the position of the single layer of steel pipes (5); The groove (42) forms a bottom surface (45) parallel to the bearing surface (41) of the support rod (4), the distance between the bottom surface (45) and the bearing surface (41) is a depth H5, and the maximum value of the diameter D of the steel pipe (5) is Dmax. The relationship between the two is: .

2. The three-dimensional shelf according to claim 1, characterized in that: The groove (42) also forms a left inclined surface (43) with two ends connected to the bottom surface (45) and the bearing surface (41) respectively. The angle ɑ of the left inclined surface (43) relative to the bottom surface (45) is .

3. The three-dimensional shelf according to claim 2, characterized in that: An angle ɑ of the left inclined surface (43) relative to the bottom surface (45) is .

4. The three-dimensional shelf according to claim 2, characterized in that: The groove (42) also forms a right inclined surface (44) whose two ends are respectively connected to the bottom surface (45) and the end of the support rod (4), and the right inclined surface (44) has an angle β relative to the bottom surface (45). .

5. The three-dimensional shelf according to claim 4, characterized in that: An angle β of the right inclined surface (44) relative to the bottom surface (45) is .

6. The three-dimensional shelf according to claim 1, characterized in that: The distance between the support rods (4) of adjacent layers is a storage height H7, the thickness of the support rod (4) at the groove (42) is H6, the distance between the bearing surface (41) of the support rod (4) and the bottom surface (45) of the support rod (4) of the upper layer is a lifting height H8, and the relationship between the storage height H7, the lifting height H8, the thickness H6 and the depth H5 is: H7=H8+H5+H6, wherein the lifting height H8>the maximum diameter Dmax.

7. The three-dimensional shelf according to claim 1, characterized in that: The bearing surface (41) rotates relative to the horizontal plane toward the column (1) by an angle ω, .

8. The three-dimensional shelf according to claim 7, characterized in that: rotation angle .

Images