Housing frame construction, housing frame assembly method

Abstract

The invention includes a width direction frame (12) extending in a width direction, a depth direction frame (13) extending in a depth direction, one end of which is joined to one end of the width direction frame (12) by a rivet (61), a vertical direction frame (14) extending in a vertical direction, one end of which is joined to one end of the width direction frame (12) and one end of the depth direction frame (13) by rivets (62), (63), respectively, and a reinforcing member (15) one side of which is joined to one end of the width direction frame (12) by a rivet (64) and the other side of which is joined to the depth direction frame (13) by a rivet (65).

Description

Technical Field

[0001] This invention relates to the construction of a shell frame and a method for assembling a shell frame. Background Technology

[0002] The distribution box and control box are constructed by housing electrical equipment inside the casing. When the casing is small, as shown in reference 1, a riveting frame with low manufacturing cost and short lead time can be used. The bottom frame and top frame of the casing are made by bending a single sheet of steel.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2015-218806 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] With a large shell size, with width and depth (in-line) both exceeding 1000mm, the steel plates used to manufacture the bottom and top frames are also large, requiring large bending machines for bending operations, making manufacturing difficult. If large bending machines cannot be used, the bottom and top frames must be manufactured separately and then welded, requiring skilled operators and resulting in disadvantages in terms of supply cycle and cost.

[0008] The purpose of this invention is to ensure sufficient strength in the shell frame construction, even for large structures, without the need for welding, thereby improving operability and suppressing cost increases.

[0009] Technical solutions for solving technical problems

[0010] One aspect of the housing frame structure of the present invention includes: a width direction frame extending in the width direction in the horizontal direction; a depth direction frame extending in the depth direction in the horizontal direction, one end of which is fastened to one end of the width direction frame by fasteners; a vertical direction frame extending in the vertical direction, one end of which is fastened to one end of the width direction frame and one end of the depth direction frame by fasteners respectively; and a reinforcing member, one side of which is fastened to one end of the width direction frame by fasteners, and the other side of which is fastened to the depth direction frame by fasteners.

[0011] Another aspect of the housing frame assembly method of the present invention includes: when one end of a width-direction frame extending in the width direction in the horizontal direction is joined to one end of a depth-direction frame extending in the depth direction in the horizontal direction, the joining pieces formed thereon along the depth direction and vertical direction are overlapped and joined by fasteners; after joining one end of the width-direction frame to one end of the depth-direction frame, when joining one end of a vertical-direction frame extending in the vertical direction to one end of the width-direction frame, the joining pieces formed thereon along the depth direction and vertical direction are overlapped and joined by fasteners, and when joining one end of the vertical-direction frame to the width-direction frame, the joining pieces formed thereon along the depth direction and vertical direction are overlapped and joined by fasteners, and when joining one end of the vertical-direction frame to the width-direction frame... When one end of the vertical direction frame is joined, the joining pieces formed on both of them along the width and vertical directions are overlapped and joined by fasteners; and after joining one end of the vertical direction frame with one end of the width direction frame and joining one end of the vertical direction frame with one end of the depth direction frame, when joining one side of the reinforcing member with one end of the width direction frame, the joining pieces formed on both of them along the width and depth directions are overlapped and joined by fasteners, and when joining the other side of the reinforcing member with one end of the width direction frame, the joining pieces formed on both of them along the width and depth directions are overlapped and joined by fasteners.

[0012] Invention Effects

[0013] According to the present invention, the width direction frame, the depth direction frame, and the vertical direction frame are each joined by fasteners, and the joint between the width direction frame and the depth direction frame is strengthened by reinforcing members. Thus, even large structures can be made strong without welding, thereby improving operability and reducing cost increases. Attached Figure Description

[0014] Figure 1 It is a three-dimensional diagram of the shell frame structure.

[0015] Figure 2 It is a three-dimensional view representing one end of the frame in the width direction.

[0016] Figure 3 It is a projection view showing one end of the frame in the width direction.

[0017] Figure 4 It is a three-dimensional view showing one end of the frame in the depth direction.

[0018] Figure 5 It is a projection view showing one end of the frame in the depth direction.

[0019] Figure 6 It is a three-dimensional diagram representing one end of a vertical frame.

[0020] Figure 7 It is a projection of one end of the vertical frame.

[0021] Figure 8 This is a three-dimensional diagram representing the reinforcing component.

[0022] Figure 9 This is a projection drawing representing the reinforcing component.

[0023] Figure 10 It is a diagram representing the bottom frame and the top frame.

[0024] Figure 11 This is a diagram showing the state where the width-direction frame and the depth-direction frame are joined together.

[0025] Figure 12 It is a diagram showing the state of the vertical frame being joined together.

[0026] Figure 13 This diagram shows the state in which the reinforcing components are joined.

[0027] Figure 14 This is a diagram showing the vertical frame in the comparative example.

[0028] Figure 15 This is a diagram showing the corner bracket in the comparative example. Detailed Implementation

[0029] Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. Furthermore, the drawings are schematic and may differ from reality. Additionally, the following embodiments illustrate apparatus and methods for embodying the technical concept of the present invention, but the configuration is not specifically as described below. That is, the technical concept of the present invention can be modified in various ways within the scope of the claims.

[0030] Implementation Method

[0031] "constitute"

[0032] In the following explanation, for convenience, the three orthogonal directions are designated as the width direction, depth direction, and vertical direction. The width direction and depth direction are two horizontal (or transverse) directions, and the vertical direction is the up-down (or perpendicular) direction. Alternatively, the width direction can be designated as the depth direction, and the depth direction as the width direction.

[0033] Figure 1 It is a three-dimensional diagram of the shell frame structure.

[0034] As the shell frame structure 11, it is assumed here to be a frequency converter box, but it can also be the outer casing of a compartmentalized high-voltage power receiving equipment, etc., and can also be used for control boxes, distribution boxes, and distribution boxes for housing various electrical equipment. It is especially suitable for large shell frame structures with dimensions of approximately 1000mm or more in both the width and depth directions.

[0035] The shell frame structure 11 combines a width-direction frame 12, a depth-direction frame 13, and a vertical-direction frame 14 to form a generally rectangular parallelepiped. Specifically, it includes four width-direction frames 12 extending in the width direction, four depth-direction frames 13 extending in the depth direction, and four vertical-direction frames 14 extending in the vertical direction. Here, as an example, a structure is adopted where the vertical-direction frames 14 are the longest and the depth-direction frames 13 are the shortest. One end of each width-direction frame 12, one end of each depth-direction frame 13, and one end of each vertical-direction frame 14 are all joined by rivets (fasteners). At each corner where the width-direction frames 12, depth-direction frames 13, and vertical-direction frames 14 intersect, reinforcing members 15 are joined to increase strength. Therefore, there are a total of eight reinforcing members 15, all joined by rivets.

[0036] Specifically, on the bottom side, the ends of two width-direction frames 12 arranged in the depth direction and two depth-direction frames 13 arranged in the width direction are joined together to form a bottom frame 16. Furthermore, on the top side, the ends of two width-direction frames 12 arranged in the depth direction and two depth-direction frames 13 arranged in the width direction are joined together to form a top frame 17. Then, the four corners of the bottom frame 16 and the top frame 17 are joined together via four vertical frames 14. The width-direction frames 12, depth-direction frames 13, vertical frames 14, and reinforcing members 15 are all formed by bending a single sheet of steel using a bending machine, and the thickness of each sheet of steel is approximately uniform.

[0037] In the following description, focusing on one corner shown as A in the figure, the structure of the base frame 16 will be described in detail. Other corners may differ in orientation (up / down or left / right), but are essentially the same structure, so detailed descriptions are omitted. Furthermore, the terms "inner side" and "outer side" refer to the inner or outer side of the shell frame structure 11.

[0038] Figure 2 It is a three-dimensional view representing one end of the frame in the width direction.

[0039] Figure 3 It is a projection view showing one end of the frame in the width direction.

[0040] Figure 3 (a) is a view of the frame 12 in the width direction as seen from the inside in the depth direction. Figure 3 (b) is a diagram of the frame 12 in the width direction as viewed from the inside in the vertical direction. Figure 3 (c) is a diagram showing the BB section of frame 12 in the width direction. Figure 3 (d) is a diagram showing the CC section of the width-direction frame 12. The width-direction frame 12 is formed by bending a steel plate into a generally square tube shape, and includes a vertical outer portion 21, a depth-direction outer portion 22, a width-direction outer portion 23, a depth-direction inner portion 24, and a vertical inner portion 25.

[0041] The outer vertical portion 21 is a plate portion along the width and depth directions. When it is the width direction frame 12 that constitutes the bottom frame 16, its bottom surface is grounded.

[0042] The outer part 22 in the depth direction is a plate part in the width direction and the vertical direction, which is formed by bending at a right angle from the outer end of the outer part 21 in the depth direction to the inner side in the vertical direction.

[0043] The outer portion 23 in the width direction is a plate portion extending along both the depth and vertical directions, formed by bending at a right angle from the outer end of the outer portion 22 in the width direction toward the inner side in the depth direction. The vertical dimension of the outer portion 23 in the width direction is approximately equal to the vertical dimension of the outer portion 22 in the depth direction. The depth dimension of the outer portion 23 in the width direction is shorter than the depth dimension of the outer portion 21 in the vertical direction.

[0044] The depth-direction inner portion 24 is a plate portion extending along both the width and vertical directions, formed by bending at a right angle from the inner end of the depth-direction outer portion 21 towards the inner side in the vertical direction. The depth-direction inner portion 24 is not formed within a range L1 extending from the front end of the width-direction outer portion 21. The vertical dimension of the depth-direction inner portion 24 is greater than the vertical dimension of the depth-direction outer portion 22.

[0045] The vertical inner portion 25 is a plate portion extending along both the width and depth directions, formed by bending at a right angle from the vertical inner end of the depth outer portion 22 towards the inner side in the depth direction. The depth dimension of the vertical inner portion 25 is shorter than the depth dimension of the vertical outer portion 21.

[0046] Two through holes 26 arranged vertically are formed on the inner side of the outer portion 23 in the width direction and in the depth direction. Rivets are inserted into the through holes 26 during engagement with the frame 13 in the depth direction. Two through holes 27 arranged vertically are formed on the outer side of the outer portion 23 in the width direction and in the depth direction. Rivets are inserted into the through holes 27 during engagement with the frame 14 in the vertical direction. Therefore, the outer portion 23 in the width direction becomes a mating piece with the frame 13 in the depth direction and a mating piece with the frame 14 in the vertical direction.

[0047] A through hole 28 is formed on the outer side of the vertical outer portion 21 in the width direction. A rivet is inserted into the through hole 28 when engaging with the reinforcing member 15. Therefore, the outer side of the vertical outer portion 21 in the width direction becomes a mating piece with the reinforcing member 15. The through hole 28 is countersunk in the vertical outer direction.

[0048] Figure 4 It is a three-dimensional view showing one end of the frame in the depth direction.

[0049] Figure 5 It is a projection view showing one end of the frame in the depth direction.

[0050] Figure 5 (a) is a view of the depth frame 13 as seen from the inside in the width direction. Figure 5 (b) is a diagram of the depth frame 13 viewed from the inside of the vertical direction. Figure 5 (c) is a diagram showing the DD section of frame 13 in the depth direction. Figure 5 (d) is a diagram showing the EE section of the depth direction frame 13. The depth direction frame 13 is formed by bending a steel plate into a generally square tube shape, including a vertical outer portion 31, a width outer portion 32, a depth outer portion 33, a protruding piece 34, a width inner portion 35, and a vertical inner portion 36.

[0051] The outer vertical portion 31 is a plate portion along the depth and width directions. When it is the depth frame 13 that constitutes the bottom frame 16, its bottom surface is grounded.

[0052] The outer portion 32 in the width direction is a plate portion that extends along both the depth and vertical directions. It is formed by bending at a right angle from the outer end of the outer portion 31 in the width direction toward the inner side in the vertical direction. The vertical dimension of the outer portion 32 in the width direction is approximately equal to the vertical dimension of the outer portion 22 in the depth direction of the frame 12 in the width direction.

[0053] The outer portion 33 in the depth direction is a plate portion extending along both the width and vertical directions. It is formed by bending at a right angle from the outer end of the outer portion 32 in the depth direction towards the inner side in the width direction. The vertical dimension of the outer portion 33 in the depth direction is approximately equal to the vertical dimension of the outer portion 32 in the width direction. The width dimension of the outer portion 33 in the depth direction is shorter than the width dimension of the outer portion 31 in the vertical direction.

[0054] The protruding piece 34 is a plate portion along the depth direction and the vertical direction, formed by bending at a right angle from the inner end of the outer side portion 33 in the width direction to the outer side in the depth direction.

[0055] The inner portion 35 in the width direction is a plate portion extending along both the depth and vertical directions, formed by bending at a right angle from the inner end of the outer portion 31 in the width direction towards the inner side in the vertical direction. The inner portion 35 in the width direction is not formed within a range L2 from the front end of the outer portion 31 in the depth direction. The vertical dimension of the inner portion 35 in the width direction is shorter than the vertical dimension of the outer portion 32 in the width direction.

[0056] The vertical inner portion 36 is a plate portion extending along both the depth and width directions, formed by bending at a right angle from the vertical inner end of the width outer portion 32 toward the width inner side. The width dimension of the vertical inner portion 36 is shorter than the width dimension of the vertical outer portion 31.

[0057] Two through holes 37 arranged vertically are formed in the protruding piece 34. The pitch of the through holes 37 is the same as the pitch of the through holes 26 formed on the outer side 23 of the width direction frame 12. Rivets are inserted into the through holes 37 during engagement with the width direction frame 12. Therefore, the protruding piece 34 becomes a connecting piece with the width direction frame 12.

[0058] Three through holes 38 arranged vertically are formed on the outer side portion 33 in the depth direction. Rivets are inserted into the through holes 38 during engagement with the vertical frame 14. Therefore, the outer side portion 33 in the depth direction becomes a connecting piece with the vertical frame 14.

[0059] A through hole 39 is formed on the outer side of the vertically outer portion 31 in the depth direction. A rivet is inserted into the through hole 39 when engaging with the reinforcing member 15. Therefore, the outer side of the vertically outer portion 31 in the depth direction becomes a mating piece with the reinforcing member 15. The through hole 39 is countersunk in the vertical direction.

[0060] Figure 6 It is a three-dimensional diagram representing one end of a vertical frame.

[0061] Figure 7It is a projection of one end of the vertical frame.

[0062] Figure 7 (a) is a diagram of the vertical frame 14 viewed from the inside in the width direction. Figure 7 (b) is a view of the vertical frame 14 as seen from the inside of the depth direction. Figure 7 (c) is a diagram showing the FF section of the vertical frame 14. The vertical frame 14 is formed by bending a steel plate into a generally square tube shape, and includes an outer portion 41 in the width direction, an outer portion 42 in the depth direction, an inner portion 43 in the width direction, an inner portion 44 in the depth direction, and an outer portion 45 in the vertical direction.

[0063] The outer portion 41 in the width direction is a plate portion along the depth direction and the vertical direction. The depth dimension of the outer portion 41 in the width direction is approximately equal to the depth dimension of the outer portion 21 in the vertical direction of the frame 12 in the width direction.

[0064] The outer portion 42 in the depth direction is a plate portion along the width and vertical directions, formed by bending at a right angle from the outer end of the outer portion 41 in the depth direction in the width direction towards the inner side in the width direction. The width dimension of the outer portion 42 in the depth direction is approximately equal to the width dimension of the outer portion 33 in the depth direction of the frame 13 in the depth direction.

[0065] The inner portion 43 in the width direction is a plate portion that extends along both the depth and vertical directions. It is formed by bending at a right angle from the inner end of the outer portion 42 in the width direction towards the inner side in the depth direction. The depth dimension of the inner portion 43 in the width direction is shorter than the depth dimension of the outer portion 41 in the width direction.

[0066] The inner depth portion 44 is a plate portion extending along both the width and vertical directions, formed by bending at a right angle from the inner depth end of the outer width portion 41 towards the inner width direction. The width dimension of the inner depth portion 44 is approximately equal to the width dimension of the outer depth portion 42.

[0067] The vertical outer portion 45 is a plate portion extending along both the width and depth directions, formed by bending at a right angle from the outer vertical end of the width outer portion 41 towards the inner width direction. The bottom surface of the vertical outer portion 45, which forms the bottom side of the vertical frame 14, is grounded. The width dimension of the vertical outer portion 45 is approximately equal to the width dimension of the depth outer portion 42.

[0068] Two through holes 46 arranged vertically are formed on the outer side of the inner portion 43 in the width direction. The pitch of the through holes 46 is the same as the pitch of the through holes 27 formed on the outer side 23 in the width direction of the frame 12. Rivets are inserted into the through holes 46 when they are joined with the frame 12 in the width direction. Therefore, the outer side of the inner portion 43 in the width direction becomes a joining piece with the frame 12 in the width direction.

[0069] Three through holes 47 arranged vertically are formed on the outer side of the inner depth portion 44. The pitch of the through holes 47 is the same as the pitch of the through holes 38 formed on the outer depth portion 33. Rivets are inserted into the through holes 47 when they are joined with the depth frame 13. Therefore, the outer side of the inner depth portion 44 in the vertical direction becomes a joining piece with the depth frame 13.

[0070] Figure 8 This is a three-dimensional diagram representing the reinforcing component.

[0071] Figure 9 This is a projection drawing representing the reinforcing component.

[0072] Figure 9 Figure (a) is a view of the reinforcing member 15 from the inside in the vertical direction. Figure (b) is a view of the reinforcing member 15 from the inside in the width direction. Figure (c) is a view of the reinforcing member 15 from the inside in the depth direction. The reinforcing member 15 is formed by bending a piece of steel plate and includes a vertical outer portion 51, a depth outer portion 52, a depth inner portion 53, a width inner portion 54, a vertical outer portion 55, and a width outer portion 56.

[0073] The vertical outer portion 51 is a plate portion extending along both the width and depth directions. The width dimension of the vertical outer portion 51 is shorter than the length of L1, which does not form the depth inner portion 24 in the width frame 12. The depth dimension of the vertical outer portion 51 is approximately equal to the depth dimension of the vertical outer portion 21 of the width frame 12.

[0074] The outer portion 52 in the depth direction is a plate portion in both the width and vertical directions, formed by bending at a right angle from the outer end of the outer portion 51 in the depth direction towards the inner side in the vertical direction. The vertical dimension of the outer portion 52 in the depth direction is shorter than the vertical dimension of the outer portion 22 in the depth direction of the frame 12 in the width direction.

[0075] The depth-direction inner portion 53 is a plate portion extending along both the width and vertical directions, formed by bending at a right angle from the inner end of the depth-direction outer portion 51 in the vertical direction towards the inner side in the vertical direction. The vertical dimension of the depth-direction inner portion 53 is longer than the vertical dimension of the depth-direction outer portion 52, and is approximately equal to the vertical dimension of the depth-direction inner portion 24 of the width-direction frame 12.

[0076] The inner portion 54 in the width direction is a plate portion that extends along both the depth and vertical directions. It is formed by bending at a right angle from the outer end of the inner portion 53 in the width direction toward the inner side in the depth direction. The vertical dimension of the inner portion 54 in the width direction is approximately equal to the vertical dimension of the inner portion 53 in the depth direction and the vertical dimension of the inner portion 35 in the width direction of the frame 13 in the depth direction.

[0077] The vertical outer portion 55 is a plate portion extending along both the width and depth directions. The depth dimension of the vertical outer portion 55 is shorter than the length of L2, which does not form the width inner portion 35 in the depth frame 13. The width dimension of the vertical outer portion 55 is approximately equal to the width dimension of the vertical outer portion 31 of the depth frame 13.

[0078] The outer portion 56 in the width direction is a plate portion that extends along both the depth and vertical directions. It is formed by bending at a right angle from the outer end of the outer portion 55 in the width direction toward the inner side in the vertical direction. The vertical dimension of the outer portion 56 in the width direction is shorter than the vertical dimension of the outer portion 32 in the width direction of the frame 13 in the depth direction, and also shorter than the vertical dimension of the inner portion 54 in the width direction.

[0079] A through hole 57 is formed on the outer vertical portion 51. A rivet is inserted into the through hole 57 during engagement with the frame 12 in the width direction. Therefore, the outer vertical portion 51 becomes a connecting piece with the frame 12 in the width direction.

[0080] A through hole 58 is formed on the outer vertical portion 55. A rivet is inserted into the through hole 58 during engagement with the depth frame 13. Therefore, the outer vertical portion 55 becomes a mating piece with the depth frame 13.

[0081] Next, the assembly method of the shell frame structure 11 will be described.

[0082] Figure 10 It is a diagram representing the bottom frame and the top frame.

[0083] As a summary of the assembly method, the bottom frame 16 and the top frame 17 are assembled first. That is, the bottom frame 16 is formed by joining the ends of the two width-direction frames 12 arranged in the depth direction and the two depth-direction frames 13 arranged in the width direction with each other. Furthermore, the top frame 17 is formed by joining the ends of the two width-direction frames 12 arranged in the depth direction and the two depth-direction frames 13 arranged in the width direction with each other.

[0084] Then, the four corners of the bottom frame 16 and the top frame 17 are joined together via four vertical frames 14, and reinforcing members 15 are joined at each corner, thereby completing the shell frame structure 11. Furthermore, when joining the vertical frames 14 to the bottom frame 16 or the top frame 17, it is preferable to do so with the vertical frames 14 laid horizontally and the bottom frame 16 or the top frame 17 standing upright.

[0085] In the following description, focusing on one corner shown as A in the figure, we will explain the assembly method in detail within the bottom frame 16. For other corners, there may be differences in orientation (up / down or left / right), but the structure is essentially the same, so detailed explanations are omitted. Figure 11 This is a diagram showing the state where the width-direction frame and the depth-direction frame are joined together.

[0086] First, one end of the width-direction frame 12 is joined to one end of the depth-direction frame 13. In this step, the joining pieces formed on both in the depth and vertical directions are overlapped and joined by rivets 61 (fasteners). That is, the inner side of the width-direction outer portion 23 of the width-direction frame 12, which has two through holes 26, overlaps with the protruding piece 34 of the depth-direction frame 13, which has two through holes 37. Then, rivets 61 are inserted into the overlapping through holes 26 and 37 from the inner side in the width direction, and the outer ends of the rivets 61 in the width direction are riveted together using a special fastening tool to make them fit firmly, thereby joining the width-direction frame 12 and the depth-direction frame 13. At this time, the outer vertical end faces of the outer vertical portion 21 of the width-direction frame 12 and the outer vertical portion 31 of the depth-direction frame 13 are the same surface. As for rivet 61, it is preferable to use a rivet for a structure that can achieve high cut, high tensile strength, and high pressure connection, and a round head type is used here.

[0087] Figure 12 It is a diagram showing the state of the vertical frame being joined together.

[0088] After joining one end of the width-direction frame 12 to one end of the depth-direction frame 13, one end of the vertical-direction frame 14 is joined to one end of the width-direction frame 12. In this step, the joining pieces formed on both of them along the depth and vertical directions are overlapped and joined by rivets 62 (fasteners). That is, the outer side of the width-direction frame 12, which has two through holes 27 in the depth direction, overlaps with the inner side of the vertical-direction frame 14, which has two through holes 46 in the width direction. Then, rivets 62 are inserted into the overlapping through holes 27 and 46 from the inner side in the width direction, and the outer ends of the rivets 62 in the width direction are riveted together using a special fastening tool to make them firmly attached, thereby joining the width-direction frame 12 and the vertical-direction frame 14. At this time, the outer ends of the vertical directions of the outer side of the width-direction frame 12 21 and the outer side of the vertical direction frame 14 45 are the same surface. As for rivet 62, it is preferable to use a rivet for a structure that can achieve high cut, high tensile strength, and high pressure connection; a round head type is used here.

[0089] Furthermore, after joining one end of the width-direction frame 12 to one end of the depth-direction frame 13, one end of the vertical-direction frame 14 is joined to one end of the depth-direction frame 13. In this step, the joining pieces formed on both in the width and vertical directions are overlapped and joined by rivets 63 (fasteners). That is, the outer depth-direction portion 33 of the depth-direction frame 13, which has three through holes 38, overlaps with the inner depth-direction portion 44 of the vertical-direction frame 14, which has three through holes 47. Then, rivets 63 are inserted into the overlapping through holes 38 and 47 from the inner depth direction, and the outer depth-direction ends of the rivets 63 are riveted together using a special fastening tool to ensure a firm fit, thereby joining the depth-direction frame 13 and the vertical frame 14. At this point, the outer vertical surfaces of the depth-direction frame 13 (outer side 31) and the vertical horizontal frame 14 (outer side 45) are coplanar. As for the rivet 63, a rivet suitable for structures requiring high cut-through strength, high tensile strength, and high-pressure bonding is preferably used; a round-head type is used here. Furthermore, the depth-direction configuration of the rivet 61 is set so that the outer end of the rivet 63 in the depth direction does not interfere with the outer end of the rivet 61 in the width direction.

[0090] Figure 13 This diagram shows the state in which the reinforcing components are joined.

[0091] One end of the vertical frame 14 is joined to one end of the width frame 12, and then one end of the vertical frame 14 is joined to one end of the depth frame 13. One side of the reinforcing member 15 is then joined to one end of the width frame 12. In this step, the connecting pieces formed in both the width and depth directions are overlapped and joined by rivets 64 (fasteners). Specifically, the outer vertical portion 21 of the width frame 12, which has a through hole 28, overlaps with the outer vertical portion 51 of the reinforcing member 15, which has a through hole 57. Then, rivets 64 are inserted into the overlapping through holes 28 and 57 from the outer vertical direction, and the inner vertical ends of the rivets 64 are riveted together using a special fastening tool to ensure a secure fit, thereby joining the width frame 12 and the reinforcing member 15. At this time, since the outer side 52 of the reinforcing member 15 in the depth direction is in contact with the outer side 22 of the frame 12 in the depth direction, positioning in the depth direction can be achieved. Regarding the inner side 53 of the reinforcing member 15 in the depth direction and the inner side 24 of the frame 12 in the depth direction, their inner end faces in the depth direction are coplanar. As for the rivet 64, a rivet suitable for structures that can achieve high cut-off, high tensile strength, and high-pressure connection is preferably used; a countersunk head type is used here.

[0092] One end of the vertical frame 14 is joined to one end of the width frame 12, and then one end of the vertical frame 14 is joined to one end of the depth frame 13. The other side of the reinforcing member 15 is then joined to one end of the depth frame 13. In this step, the connecting pieces formed on both frames along the width and depth directions are overlapped and joined by rivets 65. Specifically, the outer vertical portion 31 of the depth frame 13, which has a through hole 39, overlaps with the outer vertical portion 55 of the reinforcing member 15, which has a through hole 58. Then, rivets 65 are inserted into the overlapping through holes 39 and 58 from the outer vertical direction, and the inner vertical ends of the rivets 65 are riveted together using a special fastening tool to ensure a secure fit, thereby joining the depth frame 13 to the reinforcing member 15. At this time, since the outer side 56 of the reinforcing member 15 in the width direction is in contact with the outer side 32 of the width direction frame 12, positioning in the width direction can be achieved. The inner side 54 of the reinforcing member 15 in the width direction is located inside the width direction than the inner side 35 of the width direction frame 12. As for the rivet 65, a rivet for a structure that can achieve high cut, high tensile strength, and high pressure connection is preferably used, and a countersunk head type is used here.

[0093] "effect"

[0094] Next, the main functions of one embodiment will be explained.

[0095] The bottom and top frames that make up the shell are typically fabricated by bending a single sheet of steel and joining them with rivets. However, when the shell is large, with width and depth (in-between) each exceeding approximately 1000 mm, the steel sheets used to fabricate the bottom and top frames are large, requiring large bending machines for bending, making fabrication difficult. In cases where large bending machines cannot be used, the bottom and top frames must be fabricated separately and then welded together, requiring skilled operators and resulting in disadvantages in terms of supply cycle and cost.

[0096] Therefore, in one embodiment, a shell frame structure 11 is constructed using a width-direction frame 12, a depth-direction frame 13, a vertical-direction frame 14, and a reinforcing member 15. One end of the depth-direction frame 13 is joined to one end of the width-direction frame 12 by a rivet 61. One end of the vertical-direction frame 14 is joined to one end of the width-direction frame 12 by a rivet 62, and to one end of the depth-direction frame 13 by a rivet 63. One side of the reinforcing member 15 is joined to one end of the width-direction frame 12 by a rivet 64, and the other side of the reinforcing member 15 is joined to the depth-direction frame 13 by a rivet 65. In this way, the width-direction frame 12, the depth-direction frame 13, and the vertical-direction frame 14 are each joined by rivets, and the connection between the width-direction frame 12 and the depth-direction frame 13 is reinforced by the reinforcing member 15. Thus, even large structures can be made strong without welding, thereby improving operability and suppressing cost increases.

[0097] Furthermore, a bottom frame 16 is formed by joining the ends of two width-direction frames 12 arranged in the depth direction and two depth-direction frames 13 arranged in the width direction. A top frame 17 is formed by joining the ends of the two width-direction frames 12 arranged in the depth direction and the two depth-direction frames 13 arranged in the width direction. Then, the four corners of the bottom frame 16 and the top frame 17 are joined together via four vertical frames 14. Thus, a cubic shell frame structure 11 with 6 faces, 12 sides, and 8 vertices can be formed.

[0098] Furthermore, rivets are used as fasteners when joining the width-direction frame 12, the depth-direction frame 13, the vertical-direction frame 14, and the reinforcing member 15. This eliminates the need for welding, thus improving operability and reducing cost increases.

[0099] Furthermore, regarding the width-direction frame 12 and the depth-direction frame 13, the connecting pieces formed on these two frames along the depth direction and the vertical direction are overlapped and joined together. This simple structure enables a highly rigid connection.

[0100] Furthermore, regarding the width-direction frame 12 and the vertical-direction frame 14, the connecting pieces formed on these two components along the depth direction and the vertical direction are overlapped and joined together. Similarly, regarding the depth-direction frame 13 and the vertical-direction frame 14, the connecting pieces formed on these two components along the width direction and the vertical direction are overlapped and joined together. This simple structure enables a highly rigid connection.

[0101] Furthermore, regarding one side of the reinforcing member 15 and the width-direction frame 12, the connecting pieces formed thereon along the width and depth directions are overlapped and joined together. Similarly, regarding the other side of the reinforcing member 15 and the depth-direction frame 13, the connecting pieces formed thereon along the width and depth directions are overlapped and joined together. This simple structure enables a highly rigid connection.

[0102] Furthermore, the width-direction frame 12, the depth-direction frame 13, the vertical-direction frame 14, and the reinforcing member 15 are all formed by bending. Therefore, there are advantages in terms of production supply cycle and yield.

[0103] Furthermore, regarding the shell frame structure 11, the dimensions in both the width and depth directions are approximately 1000 mm or more. This ensures sufficient strength even for large structures without the need for welding, thereby improving operability and minimizing cost increases.

[0104] In addition, the assembly method of one embodiment includes the following steps. First, when joining one end of the width direction frame 12 to one end of the depth direction frame 13, the joining pieces formed on both of them along the depth direction and vertical direction are overlapped and joined by rivets 61. Then, when joining one end of the vertical direction frame 14 to one end of the width direction frame 12, the joining pieces formed on both of them along the depth direction and vertical direction are overlapped and joined by rivets 62. Then, when joining one end of the vertical direction frame 14 to one end of the depth direction frame 13, the joining pieces formed on both of them along the width direction and vertical direction are overlapped and joined by rivets 63. Then, when joining one side of the reinforcing member 15 to one end of the width direction frame 12, the joining pieces formed on both of them along the width direction and depth direction are overlapped and joined by rivets 64. Furthermore, when the other side of the reinforcing member 15 is joined to one end of the depth direction frame 13, the connecting pieces formed on both in the width and depth directions overlap each other and are joined by rivets 65. In this way, the width direction frame 12, the depth direction frame 13, and the vertical direction frame 14 are each joined by rivets, and the joint between the width direction frame 12 and the depth direction frame 13 is reinforced by the reinforcing member 15. Thus, even large structures can be secured without welding, thereby improving operability and minimizing cost increases.

[0105] Furthermore, the order of the steps for joining the vertical frame 14 and joining the reinforcing member 15 cannot be substituted. That is, the reinforcing member 15 cannot be joined before joining the vertical frame 14. This is because, as... Figure 13 As shown, if rivet 65 is driven in first, it will interfere with the fastening tool, preventing the driving of rivets 63, especially the outermost rivets 63 located in the vertical direction. Therefore, in one embodiment, the vertical frame 14 is joined to both the width frame 12 and the depth frame 13, and then the reinforcing member 15 is joined to both the width frame 12 and the depth frame 13. By joining in this order, interference with the fastening tool can be avoided, and the rivets 63 can be reliably fastened.

[0106] Next, the comparative examples will be explained.

[0107] Here, it is explained that a base frame 71 is formed by bending a piece of steel plate, and the base frame 71 is connected to a vertical frame 73 via a corner bracket 72.

[0108] Figure 14 This is a diagram showing the vertical frame in the comparative example.

[0109] Figure 14 (a) indicates the state before the vertical frame 73 is fitted. Figure 14 (b) indicates the state after the vertical frame 73 is fitted. In the base frame 71, a through hole 81 is formed, allowing a rivet to be inserted when engaged with the corner bracket 72. In the vertical frame 73, a notch 82 is formed, which can be fitted into the base frame 71, and a through hole 83 is formed, allowing a rivet to be inserted when engaged with the corner bracket 72. The area around the through hole 83 is drawn. The vertical frame 73 is positioned by fitting the notch 82 into the base frame 71.

[0110] Figure 15 This is a diagram showing the corner bracket in the comparative example.

[0111] Figure 15 (a) represents a three-dimensional view of the corner bracket 72. Figure 15 (b) indicates the state where the corner bracket 72 is engaged. The corner bracket 72 has through holes 84 and 85 formed for inserting rivets when engaged with the base frame 71 and for inserting rivets when engaged with the vertical frame 73. The area around the through holes 85 is drawn. The corner bracket 72 is fitted into the base frame 71 and engaged with it by rivets 86 inserted into the through holes 81 and 84. Furthermore, the vertical frame 73 is engaged with the corner bracket 72 by rivets 87 inserted into the through holes 83 and 85.

[0112] According to the comparative example, the vertical frame 73 is not directly joined to the bottom frame 71, but indirectly joined via the corner bracket 72. Therefore, the vertical frame 73 and the corner bracket 72 are drawn to improve the joint strength; however, this drawing process requires special dies, leading to increased costs. In contrast, in one embodiment, the vertical frame 14 is directly joined to the bottom frame 16 and the top frame 17, thus improving the joint strength compared to the comparative example. The reinforcing member 15 serves to reinforce the bottom frame 16 and the top frame 17 and is not joined to the vertical frame 14, therefore eliminating the need for drawing the vertical frame 14 and the reinforcing member 15. This effectively suppresses cost increases.

[0113] Variations

[0114] In one embodiment, rivets are used as fasteners, but this is not a limitation; screws, bolts, and nuts can also be used. In short, no skilled welding operator is required; only ease of operation is necessary, thus any fastener such as rivets, screws, bolts, and nuts can be used. Therefore, a certain joint strength can be ensured through relatively simple operation. Furthermore, inspection of the joint is easier compared to welding. In particular, rivets will not loosen or fall off, resulting in excellent reliability.

[0115] In one embodiment, the inner depth portion 53 of the reinforcing member 15 is in a non-contact state with the inner depth portion 24 of the width frame 12, but this is not a limitation. For example, the outer vertical portion 51, outer depth portion 52, and inner depth portion 53 of the reinforcing member 15 may be fitted into the outer vertical portion 21, outer depth portion 22, and inner depth portion 24 of the width frame 12. This increases the contact area of ​​the reinforcing member 15, thereby improving rigidity. Similarly, the inner width portion 54 of the reinforcing member 15 is in a non-contact state with the inner width portion 35 of the depth frame 13, but this is not a limitation. For example, the outer vertical portion 55, outer width portion 56, and inner width portion 54 of the reinforcing member 15 may be fitted into the outer vertical portion 31, outer width portion 32, and inner width portion 35 of the depth frame 13. This increases the contact area of ​​the reinforcing member 15, thereby improving rigidity.

[0116] The above description refers to a limited number of embodiments, but the scope of the claims is not limited thereto. Modifications based on the above-disclosed embodiments are self-evident to those skilled in the art.

[0117] Explanation of reference numerals in the attached figures

[0118] 11…Shell frame structure, 12…Frame in the width direction, 13…Frame in the depth direction, 14…Frame in the vertical direction, 15…Reinforcing member, 16…Bottom frame, 17…Top frame, 21…Outer part in the vertical direction, 22…Outer part in the depth direction, 23…Outer part in the width direction, 24…Inner part in the depth direction, 25…Inner part in the vertical direction, 26…Through hole, 27…Through hole, 28…Through hole, 31…Outer part in the vertical direction, 32…Outer part in the width direction, 33…Outer part in the depth direction, 34…Protruding piece, 35…Inner part in the width direction, 36…Inner part in the vertical direction, 37…Through hole, 38…Through hole, 39…Through hole, 41…Outer part in the width direction, 42…Through hole 43…Inner side in the depth direction, 44…Inner side in the depth direction, 45…Outer side in the vertical direction, 46…Through hole, 47…Through hole, 51…Outer side in the vertical direction, 52…Outer side in the depth direction, 53…Inner side in the depth direction, 54…Inner side in the width direction, 55…Outer side in the vertical direction, 56…Outer side in the width direction, 57…Through hole, 58…Through hole, 61…Rivet, 62…Rivet, 63…Rivet, 64…Rivet, 65…Rivet, 71…Bottom frame, 72…Corner bracket, 73…Vertical frame, 81…Through hole, 82…Notch, 83…Through hole, 84…Through hole, 85…Through hole, 86…Rivet, 87…Rivet.

Claims

1. A shell frame structure, characterized in that, include: A width-direction frame extending in the horizontal width direction; A depth direction frame extending in the horizontal direction, one end of which is fastened to one end of the width direction frame; A vertically extending frame, one end of which is fastened to one end of the width-direction frame and one end of the depth-direction frame; and The reinforcing component is fastened on one side to one end of the width-direction frame and on the other side to the depth-direction frame via fasteners. The width-direction frame includes a vertically outer portion that serves as a plate portion along the width and depth directions, and a width-direction outer portion that serves as a plate portion along the depth and vertical directions, forming a connecting piece with the depth-direction frame. The depth direction frame includes a vertical outer portion that serves as a plate portion along both the width and depth directions, and a protruding piece that serves as a connecting piece with the width direction frame, also serving as a plate portion along both the depth and vertical directions. The protruding piece is connected to the outer width portion of the width-direction frame by fasteners. The reinforcing component includes: It is set on one side as the outer vertical part of the plate portion along the width and depth directions; and It is located on the other side, serving as the vertical outer portion of the plate section along both the width and depth directions. In the reinforcing member and the width-direction frame, the vertically outer portion of one side of the reinforcing member overlaps and joins with the vertically outer portion of the width-direction frame. On the other side of the reinforcing member and in the depth direction frame, the vertical outer portion of the other side of the reinforcing member overlaps and joins with the vertical outer portion of the depth direction frame. The reinforcement component is joined after the vertical frame is joined, and the reinforcement component is not joined to the vertical frame. The reinforcing member overlaps with a joint piece formed on the outer side of the width direction frame and the depth direction frame and is connected by fasteners. In the width-direction frame and the vertical-direction frame, the joining pieces formed in both the depth direction and the vertical direction are overlapped and joined together. The depth direction frame also includes a depth direction outer portion that serves as a plate portion along the width and vertical directions and becomes a connecting piece with the vertical direction frame. In the depth direction frame and the vertical direction frame, the connecting pieces formed in both the width direction and the vertical direction are overlapped and joined together.

2. The shell frame structure as described in claim 1, characterized in that: The base frame is formed by joining the ends of two width-direction frames arranged in the depth direction and two depth-direction frames arranged in the width direction together. The top frame is formed by joining the ends of two width-direction frames arranged in the depth direction and the two depth-direction frames arranged in the width direction together. The four corners of the bottom frame and the top frame are joined together by the four vertical frames.

3. The shell frame structure as described in claim 1 or 2, characterized in that: The fastener is any one of rivets, bolts, and screws and nuts.

4. The shell frame structure as described in claim 1 or 2, characterized in that: In the width direction frame and the depth direction frame, the joining pieces formed in both the depth direction and the vertical direction are joined together by overlapping.

5. The shell frame structure as described in claim 1 or 2, characterized in that: The width-direction frame, the depth-direction frame, the vertical-direction frame, and the reinforcing member are all formed by bending.

6. The shell frame structure as described in claim 1 or 2, characterized in that: The width and depth dimensions are both 1000 mm or more.

7. A method for assembling a shell frame, characterized in that, include: When one end of a width direction frame extending in the width direction in the horizontal direction is joined to one end of a depth direction frame extending in the depth direction in the horizontal direction, the outer width direction portion of the plate portion of the width direction frame along the depth direction and vertical direction, which serves as a joining piece with the depth direction frame, and the protruding piece of the plate portion of the depth direction frame along the depth direction and vertical direction, which serves as a joining piece with the width direction frame, overlap each other and are joined by fasteners. After joining one end of the width-direction frame to one end of the depth-direction frame, when joining one end of the vertically extending frame to one end of the width-direction frame, the joining pieces formed on both in the depth and vertical directions are overlapped and joined by fasteners; and when joining one end of the vertically extending frame to one end of the depth-direction frame, the joining pieces formed on both in the width and vertical directions are overlapped and joined by fasteners; and The process involves joining one end of the vertical frame to one end of the width frame, and then joining one end of the vertical frame to one end of the depth frame, such that the reinforcing member is not connected to the vertical frame. When one side of the reinforcing member is joined to one end of the width frame, the outer vertical portion of the plate portion located on one side of the reinforcing member, which is a plate portion along both the width and depth directions, overlaps with the outer vertical portion of the plate portion located on the width frame, which is also a plate portion along both the width and depth directions, and is joined by fasteners. Similarly, when the other side of the reinforcing member is joined to one end of the depth frame, the outer vertical portion of the plate portion located on the other side of the reinforcing member, which is a plate portion along both the width and depth directions, overlaps with the outer vertical portion of the plate portion located on the depth frame, which is also a plate portion along both the width and depth directions, and is joined by fasteners. The reinforcing member overlaps with a joint piece formed on the outer side of the width direction frame and the depth direction frame and is connected by fasteners. In the width-direction frame and the vertical-direction frame, the joining pieces formed in both the depth direction and the vertical direction are overlapped and joined together. The depth direction frame also includes a depth direction outer portion that serves as a plate portion along the width and vertical directions and becomes a connecting piece with the vertical direction frame. In the depth direction frame and the vertical direction frame, the connecting pieces formed in both the width direction and the vertical direction are overlapped and joined together.

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