Stackable tote

Abstract

The utility model relates to the technical field of intelligent warehousing, specifically disclose a material frame of stackable placement, including material frame body, material frame body includes a plurality of support feet located at its bottom and a plurality of positioning head corresponding with support feet located at its top, and the bottom surface of support foot is provided with the positioning jack -plug that can supply the positioning head and insert, positioning head includes the first positioning part that is connected with the top surface of the platform, and the first positioning part protrudes upward, and in the direction of going up, the outer diameter of first positioning part gradually reduces, the inner wall of positioning jack -plug is provided with the convex ring, the inside of convex ring includes the first guide portion, and positioning jack -plug still includes the second guide portion located below the first guide portion, in the direction of going up, the inner diameter of first guide portion and second guide portion all gradually reduces, and the inner diameter of second guide portion top is greater than the inner diameter of first guide portion bottom. The utility model is convenient for material frame to be able to accurate alignment when stacking.

Description

Technical Field

[0001] This utility model relates to the field of intelligent warehousing technology, and in particular to a stackable material frame. Background Technology

[0002] In the field of smart warehousing, racks are commonly used for material storage and turnover. To reduce the space occupied by racks, existing racks are usually stacked, as shown in Chinese Patent Publication No. CN220949224U. In this patent document, the racks are positioned by the cooperation of a positioning head and a positioning base. However, when there are special circumstances such as uneven ground, this positioning structure still has the problem of inconvenient alignment. Utility Model Content

[0003] This invention provides a stackable material frame, which facilitates precise alignment of the material frames when stacked.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model provides a stackable material frame, including a material frame body. The material frame body includes multiple support legs at its bottom and multiple positioning heads corresponding to the support legs at its top. The bottom surface of the support legs is provided with positioning holes for the positioning heads to be inserted. The positioning head includes a base and a first positioning part connected to the top surface of the base. The first positioning part protrudes upward, and its outer diameter gradually decreases in the upward direction. The inner wall of the positioning hole is provided with a convex ring. The inner side of the convex ring includes a first guide part. The positioning hole also includes a second guide part located below the first guide part. In the upward direction, the inner diameters of both the first and second guide parts gradually decrease, and the inner diameter of the top end of the second guide part is larger than the inner diameter of the bottom end of the first guide part. When two material frame bodies are stacked, the first positioning part of the lower material frame body is inserted into the first guide part of the upper material frame body, and the convex ring of the upper material frame body abuts against the top surface of the base of the lower material frame body.

[0006] In some embodiments, the second guide portion includes an upper guide portion and a lower guide portion, the upper guide portion being located at the top of the lower guide portion, and the bottom end of the upper guide portion being connected to the top end of the lower guide portion; the angle formed between the inner sidewall of the upper guide portion and the horizontal direction is greater than the angle formed between the inner sidewall of the lower guide portion and the horizontal direction.

[0007] In some embodiments, the inner side of the upper guide portion is located on the extended surface of the inner side of the first guide portion.

[0008] In some embodiments, the positioning head further includes a second positioning part, which is located at the bottom of the support platform and the top end of the second positioning part is connected to the bottom end of the support platform; in the upward direction, the outer diameter of the second positioning part gradually decreases, and the outer side wall of the support platform is provided with a constant diameter; the outer diameter of the top end of the second positioning part is equal to the outer diameter of the support platform.

[0009] In some embodiments, the outer surface of the second positioning portion is located on the extended surface of the outer surface of the first positioning portion.

[0010] In some embodiments, the positioning head further includes a round head located at the top of the first positioning part, the surface of which is arc-shaped.

[0011] In some embodiments, the material frame body further includes a bottom frame, two side column assemblies, two front columns, a rear guardrail assembly, and a front tie rod. The two side column assemblies are located on the left and right sides of the bottom frame, respectively. The two front columns are located on the left and right sides of the front of the bottom frame, respectively. The rear guardrail assembly is located on the rear side of the bottom frame. Each of the two side column assemblies includes one side column. The bottom frame is provided with four connection holes that are adapted to the two side columns and the two front columns, respectively. The lower ends of the two side columns and the lower ends of the two front columns are respectively inserted into the corresponding connection holes, and both the two side columns and the two front columns are fixedly connected to the bottom frame. The two ends of the front tie rod are respectively inserted into the two front columns and fixedly connected to the two front columns. The front ends of the two side column assemblies are respectively inserted into the two front columns and fixedly connected to the two front columns. The rear guardrail assembly is respectively inserted into the bottom frame and the two side column assemblies, and the rear guardrail assembly is fixedly connected to both the bottom frame and the two side column assemblies.

[0012] In some embodiments, the rear fence assembly includes a rear tie rod and a diagonal tie rod. The two ends of the rear tie rod are respectively inserted into two side post assemblies and fixedly connected to the two side post assemblies. The two ends of the diagonal tie rod are respectively inserted into the bottom frame and one of the side post assemblies and fixedly connected to the bottom frame and one of the side post assemblies.

[0013] In some embodiments, the material frame body further includes a bottom frame, a first side fence located on the left side of the bottom frame, a second side fence located on the right side of the bottom frame, and a third side fence located on the rear side of the bottom frame. The first side fence, the second side fence, and the third side fence are all rotatably connected to the bottom frame, and the first side fence, the second side fence, and the third side fence can all be rotated to an unfolded use state and a folded storage state on the bottom frame. Locking mechanisms are provided on both sides of the third side fence, and alignment mechanisms are provided on both sides of the first side fence and the second side fence. When the first side fence, the second side fence, and the third side fence are all in use, the locking mechanisms on both sides of the third side fence can lock and engage with the alignment mechanisms of the first side fence and the second side fence, respectively, or separate from each other.

[0014] In some embodiments, the locking mechanism includes a first locking mechanism and a second locking mechanism, and the alignment mechanism includes a first alignment mechanism adapted to the first locking mechanism and a second alignment mechanism adapted to the second locking mechanism. When the first side fence, the second side fence, and the third side fence are all in use, the first locking mechanisms on both sides of the third side fence can lock and cooperate with the first alignment mechanisms of the first side fence and the first alignment mechanisms of the second side fence, respectively, to restrict the rotation of the third side fence. The second locking mechanisms on both sides of the third side fence can lock and cooperate with the second alignment mechanisms of the first side fence and the second alignment mechanisms of the second side fence, respectively, to restrict the rotation of the first side fence and the second side fence.

[0015] This utility model has at least the following beneficial effects: When stacking the material frames of this utility model, the first positioning part of the lower material frame body is inserted into the positioning hole of the upper material frame body. Since the outer diameter of the first positioning part gradually decreases in the upward direction, the inner diameters of the first guide part and the second guide part also gradually decrease, and the inner diameter of the top of the second guide part is larger than the inner diameter of the bottom of the first guide part. This makes the lower opening of the positioning hole larger, and the first guide part and the second guide part can gradually guide the first positioning part to be inserted into the first guide part, which makes it convenient for the material frames to be accurately aligned when stacked. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a stackable material frame according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the positioning head according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of a support foot according to an embodiment of the present invention;

[0019] Figure 4 This is a cross-sectional view of a positioning head inserted into the positioning hole of a support foot according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the stackable material frame according to another embodiment of the present invention;

[0021] Figure 6 for Figure 5 An exploded view of the stackable material frames shown;

[0022] Figure 7 This is a schematic diagram of the bottom frame structure according to an embodiment of the present invention;

[0023] Figure 8This is a schematic diagram of the structure of a side column assembly according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the side column assembly according to another embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the structure of the rear tie rod according to one embodiment of the present utility model;

[0026] Figure 11 This is a schematic diagram of the structure of a tie rod according to an embodiment of the present invention;

[0027] Figure 12 This is a schematic diagram of the front column structure according to an embodiment of the present invention;

[0028] Figure 13 This is a structural schematic diagram of a stackable material frame in use, according to another embodiment of the present invention.

[0029] Figure 14 This is a structural diagram of a stackable material frame in a stowed state, according to another embodiment of the present invention.

[0030] Figure 15 for Figure 14 Enlarged view of point A in the middle;

[0031] Figure 16 This is a schematic diagram of the structure of the third side fence according to an embodiment of the present invention;

[0032] Figure 17 for Figure 16 Enlarged view of point B in the middle;

[0033] Figure 18 This is a schematic diagram of the structure of the first side fence according to an embodiment of the present invention;

[0034] Figure 19 for Figure 18 Enlarged view of point C in the middle;

[0035] Figure 20 This is a cross-sectional view of the second side fence and the bottom frame according to an embodiment of the present invention.

[0036] The attached figures are labeled as follows:

[0037] Material frame body 10;

[0038] Base frame 100, connecting hole 101, support rod 110, positioning pin 120, connecting bracket 130;

[0039] Vertical rod 201, connecting plate 202, third locking mechanism 203, first side fence 210, second side fence 220, third side fence 230, side column assembly 240, side column 241, front column 250, rear fence assembly 260, front tie rod 270, rear tie rod 280, diagonal tie rod 290, pre-positioning hole 291;

[0040] Locking mechanism 300, first locking mechanism 310, locking rod 311, elastic element 312, gripping rod 313, fixed seat 314, limiting groove 315, receiving groove 316, second locking mechanism 320, positioning rod 321, limiting plate 322.

[0041] Alignment mechanism 400, first alignment mechanism 410, alignment hole 411, second alignment mechanism 420, positioning plate 421, positioning groove 422;

[0042] First support member 510, first slot 511, second support member 520, second slot 521, third support member 530, third slot 531, first insert 540, second insert 550;

[0043] Support foot 60, positioning hole 600, first guide part 610, second guide part 620, upper guide part 621, lower guide part 622, convex ring 630;

[0044] Positioning head 70, first positioning part 710, second positioning part 720, support platform 730, round head 740. Detailed Implementation

[0045] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0046] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intermediary element (e.g., the third element) between the element and the other element.

[0048] An embodiment of this utility model provides a stackable material frame, such as... Figure 1-4 As shown, the material frame body 10 includes multiple support legs 60 located at its bottom and multiple positioning heads 70 corresponding to the support legs 60 located at its top. The support legs 60 support the entire material frame. The number of positioning heads 70 is the same as the number of support legs 60, with each support leg 60 corresponding to one positioning head 70. The corresponding support legs 60 and positioning heads 70 are in the same vertical position. The bottom surface of the support legs 60 is provided with positioning holes 600 for the positioning heads 70 to be inserted, which allows the material frames to be stacked.

[0049] The positioning head 70 includes a base 730 and a first positioning part 710 connected to the top surface of the base 730. The first positioning part 710 protrudes upward, and in the upward direction, the outer diameter of the first positioning part 710 gradually decreases, which makes it easy for the first positioning part 710 to slide relative to the inner wall of the positioning hole 600 when it is not aligned with the positioning hole 600. The inner wall of the positioning socket 600 is provided with a protruding ring 630. The inner space of the protruding ring 630 includes a first guide portion 610. The positioning socket 600 also includes a second guide portion 620 located below the first guide portion 610. In the upward direction, the inner diameters of the first guide portion 610 and the second guide portion 620 gradually decrease, and the inner diameter of the top end of the second guide portion 620 is larger than the inner diameter of the bottom end of the first guide portion 610. This can guide the positioning head 70 to gradually move towards the center of the positioning socket 600. The outer diameter of the bottom end of the second guide portion 620 is larger, which is equivalent to enlarging the opening at the bottom end of the positioning socket 600, making it easier for the positioning head 70 to be inserted into the positioning socket 600.

[0050] When two frame bodies 10 are stacked one on top of the other, the positioning head 70 of the lower frame body 10 is inserted into the positioning hole 600 of the upper frame body 10. Even if the first positioning part 710 cannot be aligned with the first guide part 610, the upper frame body 10 can gradually shift under the action of the first guide part 610 and the second guide part 620, eventually allowing the first positioning part 710 of the lower frame body 10 to be inserted into the first guide part 610 of the upper frame body 10. The protruding ring 630 of the upper frame body 10 abuts against the top surface of the support platform 730 of the lower frame body 10, and the support platform 730 stably supports the support foot 600 of the upper frame body 10. Therefore, this embodiment facilitates precise alignment of the frames during stacking, ensuring that the stacked frames remain stable.

[0051] In some embodiments, the second guide portion 620 includes an upper guide portion 621 and a lower guide portion 622. The upper guide portion 621 is located at the top of the lower guide portion 622, and the bottom end of the upper guide portion 621 is connected to the top end of the lower guide portion 622. The angle formed between the inner wall of the upper guide portion 621 and the horizontal direction is greater than the angle formed between the inner wall of the lower guide portion 622 and the horizontal direction. When the positioning head 70 abuts against the inner wall of the guide portion 622 and moves toward the axis of the positioning hole 600, the positioning head 70 will separate from the lower guide portion 622. Since there is a certain height difference between the convex ring 630 and the support 730, this may cause the upper material frame to fall rapidly. In this embodiment, the upper guide portion 621 can act as an intermediate transition. After the positioning head 70 separates from the lower guide portion 622, the positioning head 70 will abut against the upper guide portion 621 to reduce the height difference between the convex ring 630 and the support 730, thus preventing excessive drop.

[0052] Furthermore, the inner side of the upper guide portion 621 is located on the extended surface of the inner side of the first guide portion 610. When the positioning head 70 abuts against the upper guide portion 621 and slides along the upper guide portion 621, the first positioning portion 710 is more easily inserted into the first guide portion 610.

[0053] In some embodiments, the positioning head 70 further includes a second positioning part 720, which is located at the bottom of the support 730, and the top end of the second positioning part 720 is connected to the bottom end of the support 730; in the upward direction, the outer diameter of the second positioning part 720 gradually decreases, the outer side wall of the support 730 is provided with a constant diameter, and the outer diameter of the top end of the second positioning part 720 is equal to the outer diameter of the support 730.

[0054] The added second positioning part 720 can abut against the second guide part 620, thereby strengthening the guiding movement of the positioning head 70.

[0055] Furthermore, the outer surface of the second positioning part 720 is located on the extended surface of the outer surface of the first positioning part 710. When the first guide part 610 abuts against the first positioning part 710, the upper guide part 621 can simultaneously abut against the second positioning part 720, making it easier to guide the first positioning part 710 into the first guide part 610.

[0056] In some embodiments, the positioning head 70 further includes a round head 740 located at the top of the first positioning part 710. The surface of the round head 740 is arc-shaped, so the round head 740 is smoother and easier to move on the inner wall of the positioning socket 600. It is also less likely to scratch the inner wall of the positioning socket 600 and the user, making it relatively safe to use.

[0057] In some embodiments, the first guide portion 610, the upper guide portion 621, the lower guide portion 622, the first positioning portion 710 and the second positioning portion 720 of the above embodiments can all be frustoconical in shape. In the horizontal direction, they can all guide the positioning head 70 to slide radially relative to the support foot 60, thereby accurately inserting it into the positioning socket 600.

[0058] In some embodiments, the boss 730 may be cylindrical, and the positioning hole 600 between the upper guide portion 621 and the protruding ring 630 may be a cylindrical hole.

[0059] Based on the above embodiments, this embodiment also provides another stackable material frame, specifically as follows: Figures 5-12 As shown, the material frame body also includes a base frame 100, two side column assemblies 240, two front columns 250, a rear guardrail assembly 260, and a front tie rod 270. The two side column assemblies 240 are located on the left and right sides of the base frame 100, respectively. The two front columns 250 are located on the left and right sides of the front of the base frame 100, respectively. The rear guardrail assembly 260 is located on the rear side of the base frame 100. Thus, the material frame has guardrail structures on the left, right, and rear sides. When goods are placed on the base frame 100, the two side column assemblies 240 and the rear guardrail assembly 260 block the goods from the left and right sides and the rear side, respectively, to prevent the goods from falling. The front of the material frame allows goods to enter or exit the base frame 100.

[0060] Each of the two side pillar assemblies 240 includes a side pillar 241. The base frame 100 has four connecting holes 101 that respectively mate with the two side pillars 241 and the two front pillars 250. The lower ends of the two side pillars 241 and the two front pillars 250 are respectively inserted into their corresponding connecting holes 101. The two side pillar assemblies 240 and the two front pillars 250 are pre-positioned through the insertion and engagement of the pillars with the connecting holes 101. Both the two side pillars 241 and the two front pillars 250 are fixedly connected to the base frame 100. The two ends of the front tie rod 270 are respectively inserted into the two front pillars 250. The connection between the front tie rod 270 and the front pillars 250 is positioned through this insertion. The two ends of the front tie rod 270 can also be fixedly connected to the two front pillars 250 by means of rivets, screws, etc. The front ends of the two side pillar assemblies 240 are respectively inserted into the two front pillars 250. The connection between the side pillar assemblies 240 and the front pillars 250 is positioned by the insertion method. The front ends of the two side pillar assemblies 240 can also be fixedly connected to the two front pillars 250 by means of rivets, screws, etc. The rear fence assembly 260 is respectively inserted into the bottom frame 100 and the two side pillar assemblies 240. The connection between the rear fence assembly 260 and the bottom frame 100 and the side pillar assemblies 240 is positioned by the insertion method. The rear fence assembly 260 can also be fixedly connected to the bottom frame 100 and the two side pillar assemblies 240 by means of rivets, screws, etc.

[0061] Therefore, in this embodiment, the components of the material frame are positioned by plugging in. After plugging in, the holes on each component can be accurately aligned, which eliminates the need for operators to align the holes. Subsequently, adjacent components can be easily fixed together by means of rivet connection, screw connection, etc., thereby simplifying the assembly process of the material frame and improving production efficiency.

[0062] In some embodiments, such as Figure 5 As shown, the positioning head 70 in the above embodiment can be fixed to the top of the side column 241 and the front column 250. The support foot 60 in the above embodiment is connected to the bottom frame 100.

[0063] In some embodiments, the rear fence assembly includes a rear tie rod 280 and a diagonal tie rod 290. The two ends of the rear tie rod 280 are respectively inserted into two side post assemblies 240. The connection between the rear tie rod 280 and the side post assemblies 240 is positioned by this insertion. The two ends of the rear tie rod 280 can be fixedly connected to the two side post assemblies 240 by means of rivets, screws, or other methods. The two ends of the diagonal tie rod 290 are respectively inserted into the base frame 100 and one of the side post assemblies 240. The connection between the diagonal tie rod 290 and the base frame 100, and between the diagonal tie rod 290 and the side post assemblies 240, is positioned by this insertion. The two ends of the diagonal tie rod 290 can be fixedly connected to the base frame 100 and one of the side post assemblies 240 by means of rivets, screws, or other methods.

[0064] In this embodiment, the rear tie rod 280 mainly serves to connect the two side column assemblies 240, and the diagonal tie rod 290 mainly serves to block the cargo.

[0065] Furthermore, both side pillar assemblies 240 include a first support member 510, and each first support member 510 is provided with a first slot 511. The bottom surfaces of both ends of the rear pull rod 280 are provided with downwardly extending first inserts 540. The first inserts 540 at both ends of the rear pull rod 280 are respectively inserted into the first slots 511 of the first support members 510 of the two side pillar assemblies 240 to realize the insertion of the rear pull rod 280 and the side pillar assembly 240.

[0066] Since the first insert 540 extends downwards, it is inserted into the first slot 511 downwards. This insertion method does not require significant adjustment of the spacing between the two side column assemblies 240, facilitating the insertion of the rear pull rod 280. The first support member 510 can extend horizontally, and the rear pull rod 280 can be placed on the first support member 510, thereby supporting the rear pull rod 280.

[0067] In some embodiments, the bottom frame 100 and the side column assembly 240 connected to the diagonal brace 290 both include positioning pins 120. Both ends of the diagonal brace 290 are provided with pre-positioning holes 291. The positioning pins 120 of the bottom frame 100 and the positioning pins 120 of the side column assembly 240 are respectively inserted into the pre-positioning holes 291 at both ends of the diagonal brace 290. The positioning pins 120 and the pre-positioning holes 291 are used to position the connection between the diagonal brace 290 and the side column assembly 240 and the connection between the diagonal brace 290 and the bottom frame 100, so as to facilitate subsequent fixing by means of rivet connection or screw connection.

[0068] In some embodiments, the two ends of the rear tie rod 280 are fixedly connected to the two side column assemblies 240 by rivets, and the two ends of the diagonal tie rod 290 are fixedly connected to the base frame 100 and the side column assembly 240 by rivets. Accordingly, the rear tie rod 280, diagonal tie rod 290, base frame 100, and side column assembly 240 are all provided with rivet holes through which rivets can pass. This embodiment connects the relevant components by rivets, which eliminates the need to tighten screws compared to screw connections, thus shortening the operation time.

[0069] In this embodiment, the two ends of the rear tie rod 280 can be fixedly connected to the first support member 510 of the two side column assemblies 240 by rivets.

[0070] In some embodiments, both front pillars 250 include a second support member 520, and each second support member 520 is provided with a second slot 521. The bottom surface of the front end of each of the two side pillar assemblies 240 is provided with a downwardly extending second insert 550. The second inserts 550 of the two side pillar assemblies 240 are respectively inserted into the second slots 521 of the second support members 520 of the two front pillars 250 to realize the insertion of the side pillar assembly 240 and the front pillar 250.

[0071] Since the second insert 550 extends downward, it is inserted into the second slot 521 downward. This insertion method does not require a large adjustment of the distance between the side column assembly 240 and the front column 250. During the process of inserting the side column 241 into the connection hole, the second insert 550 can be inserted into the second slot 521 at the same time, which facilitates the insertion of the second insert 550.

[0072] The second support member 520 can extend horizontally, and the front end of the side column assembly 240 can be placed on the second support member 520, thereby supporting the side column assembly 240.

[0073] Furthermore, the two side column assemblies 240 are respectively fixedly connected to the two second support members 520 by rivets. Accordingly, both the side column assembly 240 and the second support member 520 are provided with rivet holes through which rivets can pass. In this embodiment, the side column assembly 240 and the second support member 520 are connected by rivets, which eliminates the need to tighten screws compared to screw connections, thus shortening the operation time.

[0074] In some embodiments, both front pillars 250 include a third support member 530, and each third support member 530 is provided with a third slot 531. The bottom surfaces of both ends of the front pull rod are provided with downwardly extending third inserts. The third inserts at both ends of the front pull rod are respectively inserted into the third slots 531 of the third support members 530 of the two front pillars 250 to realize the insertion of the front pull rod and the front pillars 250.

[0075] Since the third insert extends downwards, it is inserted into the third slot 531 downwards. This insertion method does not require a large adjustment to the distance between the two front posts 250. After the front posts 250 are inserted into the connecting holes, the front pull rod can be moved from top to bottom, so that the third inserts at both ends of the front pull rod can be inserted into the third slot 531 at the same time.

[0076] The third support member 530 can extend horizontally, and the front tie rod can be placed on the third support member 530 to support the front tie rod.

[0077] In this embodiment, the structure of the front tie rod can be the same as that of the rear tie rod 280, and correspondingly, the structure of the third insert can also be the same as that of the second insert.

[0078] Furthermore, both ends of the front pull rod are fixedly connected to two third support members 530 by rivets. Correspondingly, both the front pull rod and the third support members 530 are provided with rivet holes through which the rivets can pass. In this embodiment, the front pull rod and the third support members 530 are connected by rivets, which, compared to screw connections, eliminates the need to tighten screws, thus shortening the operation time.

[0079] In some embodiments, connecting brackets 130 are provided on both side columns 241 and both front columns 250, and the connecting brackets 130 of the two side columns 241 and the two front columns 250 are fixedly connected to the bottom frame 100 by rivets.

[0080] Both the connecting bracket 130 and the bottom frame 100 are provided with rivet holes for rivets to pass through. Since the components of the material frame are positioned by insertion, after insertion, the rivet holes of the connecting bracket 130 and the bottom frame 100 can be accurately aligned, thus facilitating connection.

[0081] Based on the above embodiments, this embodiment also provides another stackable material frame, specifically as follows: Figures 13-20 As shown, the material frame body also includes a base frame 100, a first side railing 210 located on the left side of the base frame 100, a second side railing 220 located on the right side of the base frame 100, and a third side railing 230 located on the rear side of the base frame 100. The first side railing 210, the second side railing 220, and the third side railing 230 are all rotatably connected to the base frame 100. The first side railing 210 and the second side railing 220 can rotate towards each other or move away from each other, while the third side railing 230 can rotate forward or backward. All three side railings can be rotated to an unfolded working state, such as... Figure 13As shown, the first side fence 210, the second side fence 220, and the third side fence 230 are approximately vertical at this time to prevent goods on the bottom frame 100 from moving to the side. The first side fence 210, the second side fence 220, and the third side fence 230 can also be rotated to a folded-down storage state on the bottom frame 100, as shown... Figure 14 As shown, the first side fence 210, the second side fence 220 and the third side fence 230 are all folded and stored.

[0082] Locking mechanisms 300 are provided on both sides of the third side fence 230, and alignment mechanisms 400 are provided on both the first side fence 210 and the second side fence 220. The alignment mechanisms 400 of the first side fence 210 and the second side fence 220 are respectively adapted to the locking mechanisms 300 on both sides of the third side fence 230. When the first side fence 210, the second side fence 220 and the third side fence 230 are all in use, the locking mechanisms 300 on both sides of the third side fence 230 can be locked in place with the alignment mechanisms 400 of the first side fence 210 and the second side fence 220 or can be separated from each other.

[0083] When the material frame of this embodiment needs to be used, the first side fence 210, the second side fence 220 and the third side fence 230 are all rotated to the use state. Then, the locking mechanisms 300 on both sides of the third side fence 230 are locked in place with the alignment mechanisms 400 of the first side fence 210 and the second side fence 220, respectively. This restricts the rotation of the first side fence 210, the second side fence 220 and the third side fence 230, so that the first side fence 210, the second side fence 220 and the third side fence 230 can be kept in the use state, preventing the first side fence 210, the second side fence 220 and the third side fence 230 from tipping over on their own, and ensuring that the user can use the material frame normally.

[0084] When the material frame of this embodiment is not needed, the locking mechanisms 300 on both sides of the third side fence 230 are separated from the alignment mechanisms 400 of the first side fence 210 and the second side fence 220, respectively, so that the rotation of the first side fence 210, the second side fence 220 and the third side fence 230 is no longer restricted. The first side fence 210, the second side fence 220 and the third side fence 230 can all be rotated to a folded storage state on the bottom frame 100, thereby reducing the space occupied by the entire material frame and facilitating the transportation of the material frame.

[0085] In some embodiments, such as Figure 13 As shown, the positioning head 70 in the above embodiment can be fixed to the top of the first side fence 210 and the second side fence 220. The support foot 60 in the above embodiment is connected to the bottom frame 100.

[0086] In some embodiments, the locking mechanism 300 includes a first locking mechanism 310 and a second locking mechanism 320, and the alignment mechanism 400 includes a first alignment mechanism 410 adapted to the first locking mechanism 310 and a second alignment mechanism 420 adapted to the second locking mechanism 320. When the first side fence 210, the second side fence 220, and the third side fence 230 are all in use, the first locking mechanisms 310 on both sides of the third side fence 230 can lock and cooperate with the first alignment mechanisms 410 of the first side fence 210 and the first alignment mechanisms 420 of the second side fence 220 respectively to restrict the rotation of the third side fence 230. When the first locking mechanisms 310 on both sides of the third side fence 230 are separated from the first alignment mechanisms 410 of the first side fence 210 and the first alignment mechanisms 420 of the second side fence 220 respectively, the rotation of the third side fence 230 is no longer restricted, and the third side fence 230 can be rotated to a storage state. The second locking mechanisms 320 on both sides of the third side fence 230 can lock and cooperate with the second alignment mechanism 420 of the first side fence 210 and the second alignment mechanism 420 of the second side fence 220 respectively to restrict the rotation of the first side fence 210 and the second side fence 220. When the second locking mechanisms 320 on both sides of the third side fence 230 are separated from the second alignment mechanism 420 of the first side fence 210 and the second alignment mechanism 420 of the second side fence 220 respectively, the rotation of the first side fence 210 and the second side fence 220 is no longer restricted, and the first side fence 210 and the second side fence 220 can be rotated to the storage state.

[0087] Since the first side fence 210 and the second side fence 220 rotate in different directions than the third side fence 230, this embodiment restricts the rotation of the third side fence 230 by the cooperation of the first locking mechanism 310 and the first alignment mechanism 410, and restricts the rotation of the first side fence 210 and the second side fence 220 by the cooperation of the second locking mechanism 320 and the second alignment mechanism 420, thus ensuring the locking effect. The first side fence 210, the second side fence 220 and the third side fence 230 can be stably maintained in the use state.

[0088] Furthermore, the first locking mechanism 310 includes a locking rod 311 that can move in the left-right direction, and the first alignment mechanism 410 is a socket 411 adapted to the locking rod 311. Since the third side fence 230 rotates forward or backward, when the locking rod 311 is inserted into the socket 411, the third side fence 230 cannot rotate, and the first locking mechanism 310 locks into the first alignment mechanism 410. When the locking rod 311 disengages from the socket 411, it no longer restricts the rotation of the third side fence 230, and the first locking mechanism 310 and the first alignment mechanism 410 can be separated from each other.

[0089] The structure employs a locking rod 311 that engages with the insertion hole 411, resulting in a simple design that is easy to operate. Users can manually control the locking rod 311 to move left and right. The locking rod 311 can extend outwards and be inserted into the insertion hole 411, or it can retract inwards and disengage from the insertion hole 411.

[0090] Furthermore, the first locking mechanism 310 also includes an elastic element 312, which applies an outwardly extending elastic force to the locking rod 311. Thus, without any other external force, the force applied by the elastic element 312 to the locking rod 311 keeps it in an outwardly extending state, preventing it from easily disengaging from the insertion hole 411 and ensuring the locking effect on the third side fence 230. When the user wants the locking rod 311 to disengage from the insertion hole 411, a certain force is required to overcome the elastic force of the elastic element 312.

[0091] Furthermore, the locking lever 311 is connected to a grip lever 313 for the user to hold. The user can grasp the grip lever 313 and thus move the locking lever 311 in the left and right directions. The grip lever 313 extends radially along the locking lever 311, forming a bent structure. This structure makes it easier for the user to apply force, making operation more effortless.

[0092] The first locking mechanism 310 also includes a fixed base 314, which has a through hole extending in the left-right direction. The locking rod 311 passes through the through hole and can move and rotate within it. A limiting groove 315 is provided on the fixed base 314. When the locking rod 311 disengages from the insertion hole 411, the gripping rod 313 can rotate to insert into the limiting groove 315 to restrict the locking rod 311 from extending outwards. Since the elastic element 312 applies an outward force to the locking rod 311, continuous force needs to be applied to the locking rod 311 to disengage it from the insertion hole 411, which is inconvenient for the user. Therefore, in this embodiment, by inserting the gripping rod 313 into the limiting groove 315, the inner wall of the limiting groove 315 restricts the locking rod 311 from extending outwards, eliminating the need for continuous force application to the locking rod 311, making operation more convenient and effortless for the user.

[0093] The mounting base 314 is also provided with a receiving groove 316. When the locking rod 311 is inserted into the socket 411, the gripping rod 313 can be rotated to insert into the receiving groove 316. The receiving groove 316 accommodates the gripping rod 313 and also limits the gripping rod 313, restricting the distance of the locking rod 311 into the socket 411 and preventing it from being inserted too deeply.

[0094] In some embodiments, the elastic element 312 is a spring sleeved on the outside of the locking rod 311, with one end of the spring abutting against the fixing seat 314 and the other end of the spring connected to the locking rod 311; or, the locking rod 311 is provided with a protruding ring, and the other end of the spring abuts against the protruding ring.

[0095] In this embodiment, the elastic element 312 is defined as a spring. The spring is sleeved on the outside of the locking rod 311, making it difficult to detach from the locking rod 311, and can stably provide elastic force along the axial direction of the locking rod 311.

[0096] In some embodiments, the second locking mechanism 320 includes a hook, and the second alignment mechanism 420 includes a positioning plate 421, which has a positioning groove 422 with a front opening. When the third side fence 230 rotates from a folded state to a usable state, the hook can be inserted into the positioning groove 422 and hooked onto the positioning plate 421, thereby restricting the rotation of the first side fence 210 and the second side fence 220.

[0097] This embodiment uses hooks to restrict the rotation of the first side fence 210 and the second side fence 220, resulting in a simple structure. During the rotation of the third side fence 230 towards the use state, the hooks automatically engage with the positioning plate 421; during the rotation of the third side fence 230 towards the storage state, the hooks automatically detach from the positioning plate 421, eliminating the need for the user to switch between locking and unlocking states, simplifying operation, and making it more convenient to use.

[0098] Furthermore, the hook includes a positioning rod 321 extending outward in the left-right direction and a limiting plate 322 located at the end of the positioning rod 321. The outer diameter of the limiting plate 322 is larger than the width of the positioning groove 422. When the third side fence 230 rotates from the folded state to the use state, the positioning rod 321 can be inserted into the positioning groove 422, and the positioning plate 421 is located between the limiting plate 322 and the third side fence 230. In this state, the limiting plate 322 can abut against the outer side of the positioning plate 421 (the side away from the third side fence 230), thereby restricting the first side fence 210 and the second side fence 220 from rotating in a direction away from each other. The third side fence 230 can abut against the inner side of the positioning plate 421 (the side close to the third side fence 230), thereby restricting the first side fence 210 and the second side fence 220 from rotating towards each other, thus playing the role of restricting the rotation of the first side fence 210 and the second side fence 220.

[0099] In some embodiments, both the first side fence 210 and the second side fence 220 are provided with a third locking mechanism 203, and the bottom frame 100 is provided with two sets of third alignment mechanisms that are respectively adapted to the third locking mechanisms 203 of the first side fence 210 and the third locking mechanisms 203 of the second side fence 220. When the first side fence 210 is in use, the third locking mechanism 203 of the first side fence 210 can lock and cooperate with the third alignment mechanism to restrict the rotation of the first side fence 210; when the second side fence 220 is in use, the third locking mechanism 203 of the second side fence 220 can lock and cooperate with the third alignment mechanism to restrict the rotation of the second side fence 220.

[0100] Therefore, in this embodiment, the cooperation between the third locking mechanism 203 and the third alignment mechanism can further restrict the rotation of the first side fence 210 and the second side fence 220, ensuring that the rotation of the first side fence 210 and the second side fence 220 can be stably maintained in the working state. Of course, when the first side fence 210 and the second side fence 220 need to be rotated to the storage state, the third locking mechanism 203 needs to be separated from the third alignment mechanism.

[0101] Furthermore, both the first side fence 210 and the second side fence 220 include vertical bars 201, and connecting plates 202 are fixed to both sides of the lower end of the vertical bars 201. The bottom frame 100 includes a vertically upward extending support rod 110, which can be located between the two connecting plates 202 and rotatably connected to the two connecting plates 202 respectively. A third locking mechanism 203 can be provided on the connecting plates 202.

[0102] In some embodiments, the third locking mechanism 203 includes a resiliently extendable elastic pin, and the third alignment mechanism is a limiting hole provided on the bottom frame 100. The elastic pin can be inserted into or disengaged from the limiting hole. When the elastic pin is inserted into the limiting hole, the third locking mechanism 203 and the third alignment mechanism are locked together. When the elastic pin is disengaged from the limiting hole, the third locking mechanism 203 and the third alignment mechanism are separated. The default state of the elastic pin can be that it is inserted into the limiting hole, thereby maintaining the locked engagement between the third locking mechanism 203 and the third alignment mechanism and preventing the elastic pin from disengaging from the limiting hole on its own. When the first side railing 210 and the second side railing 220 need to be rotated to the retracted state, the user can apply force to the elastic pin to disengage it from the limiting hole.

[0103] In some embodiments, a limiting mechanism is provided on the bottom frame 100 and / or the third side fence 230. When the third side fence 230 is in use, the limiting mechanism is used to restrict the third side fence 230 from rotating to the rear, which can prevent the third side fence 230 from flipping backward.

[0104] The limiting mechanism can be a baffle. When the third side fence 230 is in use, the baffle abuts against the rear side of the third side fence 230, thereby preventing the third side fence 230 from rotating to the rear.

[0105] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A stackable material frame, characterized in that: The device includes a material frame body, which comprises multiple support legs at its bottom and multiple positioning heads corresponding to the support legs at its top. The bottom surface of each support leg has a positioning hole into which the positioning head can be inserted. Each positioning head includes a base and a first positioning portion connected to the top surface of the base. The first positioning portion protrudes upwards, and its outer diameter gradually decreases in the upward direction. The inner wall of the positioning hole has a protruding ring, and the inner side of the protruding ring includes a first guide portion. The positioning hole also includes a second guide portion located below the first guide portion. In the upward direction, the inner diameters of both the first and second guide portions gradually decrease, with the inner diameter at the top of the second guide portion being larger than the inner diameter at the bottom of the first guide portion. When two material frame bodies are stacked, the first positioning portion of the lower material frame body is inserted into the first guide portion of the upper material frame body, and the protruding ring of the upper material frame body abuts against the top surface of the base of the lower material frame body.

2. The stackable material frame according to claim 1, characterized in that: The second guide portion includes an upper guide portion and a lower guide portion. The upper guide portion is located at the top of the lower guide portion, and the bottom end of the upper guide portion is connected to the top end of the lower guide portion. The angle formed between the inner sidewall of the upper guide portion and the horizontal direction is greater than the angle formed between the inner sidewall of the lower guide portion and the horizontal direction.

3. The stackable material frame according to claim 2, characterized in that: The inner side of the upper guide portion is located on the extended surface of the inner side of the first guide portion.

4. The stackable material frame according to claim 1, characterized in that: The positioning head also includes a second positioning part, which is located at the bottom of the support platform. The top of the second positioning part is connected to the bottom of the support platform. In the upward direction, the outer diameter of the second positioning part gradually decreases, and the outer wall of the support platform is set with a constant diameter. The outer diameter of the top of the second positioning part is equal to the outer diameter of the support platform.

5. The stackable material frame according to claim 4, characterized in that: The outer surface of the second positioning part is located on the extended surface of the outer surface of the first positioning part.

6. The stackable material frame according to claim 1, characterized in that: The positioning head also includes a round head located at the top of the first positioning part, and the surface of the round head is arc-shaped.

7. The stackable material frame according to any one of claims 1-6, characterized in that: The material frame body also includes a bottom frame, two side column assemblies, two front columns, a rear guardrail assembly, and a front tie rod. The two side column assemblies are located on the left and right sides of the bottom frame, respectively. The two front columns are located on the left and right sides of the front of the bottom frame, respectively. The rear guardrail assembly is located on the rear side of the bottom frame. Each of the two side column assemblies includes one side column. The bottom frame is provided with four connection holes that are adapted to the two side columns and the two front columns, respectively. The lower ends of the two side columns and the lower ends of the two front columns are respectively inserted into the corresponding connection holes, and the two side columns and the two front columns are fixedly connected to the bottom frame. The two ends of the front tie rod are respectively inserted into the two front columns and fixedly connected to the two front columns. The front ends of the two side column assemblies are respectively inserted into the two front columns and fixedly connected to the two front columns. The rear guardrail assembly is respectively inserted into the bottom frame and the two side column assemblies, and the rear guardrail assembly is fixedly connected to the bottom frame and the two side column assemblies.

8. The stackable material frame according to claim 7, characterized in that: The rear fence assembly includes a rear tie rod and a diagonal tie rod. The two ends of the rear tie rod are respectively inserted into two side post assemblies and fixedly connected to the two side post assemblies. The two ends of the diagonal tie rod are respectively inserted into the bottom frame and one of the side post assemblies and fixedly connected to the bottom frame and one of the side post assemblies.

9. The stackable material frame according to any one of claims 1-6, characterized in that: The material frame body also includes a bottom frame, a first side fence located on the left side of the bottom frame, a second side fence located on the right side of the bottom frame, and a third side fence located on the rear side of the bottom frame. The first side fence, the second side fence, and the third side fence are all rotatably connected to the bottom frame, and the first side fence, the second side fence, and the third side fence can all be rotated to an unfolded use state and a folded storage state on the bottom frame. Locking mechanisms are provided on both sides of the third side fence, and alignment mechanisms are provided on both sides of the first side fence and the second side fence. When the first side fence, the second side fence, and the third side fence are all in use, the locking mechanisms on both sides of the third side fence can lock and engage with the alignment mechanisms of the first side fence and the second side fence, respectively, or separate from each other.

10. The stackable material frame according to claim 9, characterized in that: The locking mechanism includes a first locking mechanism and a second locking mechanism. The alignment mechanism includes a first alignment mechanism adapted to the first locking mechanism and a second alignment mechanism adapted to the second locking mechanism. When the first side fence, the second side fence, and the third side fence are all in use, the first locking mechanisms on both sides of the third side fence can lock with the first alignment mechanisms of the first side fence and the first alignment mechanisms of the second side fence, respectively, to restrict the rotation of the third side fence. The second locking mechanisms on both sides of the third side fence can lock with the second alignment mechanisms of the first side fence and the second alignment mechanisms of the second side fence, respectively, to restrict the rotation of the first side fence and the second side fence.

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