Split body shelf

Abstract

The utility model discloses a split type goods shelf relates to bicycle technical field, including face frame, front support and rear support: face frame is equipped with the front recess and rear recess of opening downward, and the front recess one side is equipped with the front fixed hole, and the rear recess one side is equipped with rear fixed hole, front support includes front connecting block and front support leg, and front connecting block is equipped with front bulge and front connecting hole, and front support is connected with the frame through front support leg, and is embedded through front bulge into front recess and the detachable connection of the bolt connection of front connecting hole and front fixed hole with face frame is realized, rear support includes rear connecting block and rear support leg, and rear connecting block is equipped with rear bulge and rear connecting hole, and rear support is connected with the frame through rear support leg, and is embedded through rear bulge into rear recess and the detachable connection of the bolt connection of rear connecting hole and rear fixed hole with face frame is realized. The utility model can realize the detachable connection of goods shelf, reduces transportation space and cost and is convenient for replacing face frame.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a split-type rack. Background Technology

[0002] In the bicycle (including electric bicycle) parts industry, racks are essential components for carrying goods and people (such as picking up children). Most mainstream racks on the market consist of a front frame, front support, and rear support. The front frame, as the main load-bearing structure, is fixedly connected to the frame via the front and rear supports. In traditional rack structures, the front and rear supports are typically welded to the front frame, forming a single, integrated structure. However, this type of rack has the following drawbacks: Transportation Costs and Damage Issues: Due to their fixed structure, integrated shelving occupies a significant amount of space during transportation. Although some space can be saved by stacking during bulk shipments, in B2C e-commerce scenarios, larger packaging boxes are required to maintain the vertical connection between the supports and the front frame, and these boxes need to be filled with cushioning materials such as foam to prevent collisions. Even so, due to the unique structure of the shelving, it is still prone to damage such as bending and breakage of the supports due to compression and vibration during transportation, thereby increasing transportation loss costs.

[0003] Inconvenient Function Switching: In recent years, with the diversification of user needs, the functional division of shelving has become increasingly refined, such as various types of heavy-duty shelving specifically for transporting goods and protective shelving suitable for carrying people. Shelving with different functions has significant differences due to its frame structure. However, the front and rear supports of existing shelving are mostly fixedly connected to the frame. If the shelving function needs to be switched, the entire shelving (including the front and rear supports) must be replaced. Since the front and rear supports are usually fixed near the wheels, the disassembly process is cumbersome and easily gets dirty, causing operators' hands to get dirty and causing inconvenience to users.

[0004] To address the aforementioned issues, Chinese patent document CN218640992U proposes a split-type electric bicycle rear rack. This design involves disassembling the rear rack into a left lower rear rack, a right lower rear rack, and an upper rear rack, using screws and nuts for assembly and disassembly. This reduces transport volume and costs to some extent. However, in this technical solution, the components are only fixed by threaded connections of screws and nuts, lacking connection stability. Under heavy loads or after prolonged use, the connections are prone to loosening, affecting the overall structural reliability and potentially posing a risk of injury. Utility Model Content

[0005] To address one or more technical problems in the prior art, this utility model provides a modular shelving unit, comprising a front frame, a front support, and a rear support: The face frame is provided with a front groove and a rear groove with downward openings. A front fixing hole is provided on one side of the front groove, and a rear fixing hole is provided on one side of the rear groove. The front bracket includes a front connecting block and a front support leg. The front connecting block has a front protrusion and a front connecting hole. The front bracket is connected to the vehicle frame through the front support leg, and is detachably connected to the faceplate through the front protrusion being embedded in the front groove and the bolt connection between the front connecting hole and the front fixing hole. The rear bracket includes a rear connecting block and a rear support leg. The rear connecting block has a rear protrusion and a rear connecting hole. The rear bracket is connected to the vehicle frame through the rear support leg, and is detachably connected to the face frame through the rear protrusion being embedded in the rear groove and the bolt connection between the rear connecting hole and the rear fixing hole.

[0006] Preferably, the front groove includes at least a symmetrically distributed first groove and second groove, the front fixing hole is located between the first groove and the second groove, and the front protrusion includes at least a first protrusion that matches the first groove and a second protrusion that matches the second groove; The rear groove includes at least a symmetrically distributed third groove and a fourth groove, the rear fixing hole is located between the third groove and the fourth groove, and the rear protrusion includes at least a third protrusion that matches the third groove and a fourth protrusion that matches the fourth groove.

[0007] Preferably, the front fixing holes include at least a first fixing hole and a second fixing hole that are symmetrically distributed, and the front connecting holes include at least a first connecting hole that matches the first fixing hole and a second connecting hole that matches the second fixing hole; The rear fixing holes include at least a symmetrically distributed third fixing hole and a fourth fixing hole, and the rear connecting holes include at least a third connecting hole that matches the third fixing hole and a fourth connecting hole that matches the fourth fixing hole.

[0008] Preferably, the front connecting block is provided with a front weight reduction hole, which is located between the first connecting hole and the second connecting hole; The rear connecting block is provided with a rear weight reduction hole, which is located between the third connecting hole and the fourth connecting hole.

[0009] Preferably, the bottom of the front connecting block is provided with a front guide hole, and the front guide hole is located at the outer edge of the front connecting hole; The bottom of the rear connecting block is provided with a rear guide hole, which is located at the outer edge of the rear connecting hole.

[0010] Preferably, the depth of the front groove is not greater than the height of the front protrusion, so that the main body of the front connecting block fits tightly against the bottom of the face frame; The depth of the rear groove is not greater than the height of the rear protrusion, so that the main body of the rear connecting block fits tightly against the bottom of the face frame.

[0011] Preferably, the front connecting block is provided with a front receiving cavity, the front receiving cavity is located below the front protrusion, and the front support leg is embedded in the front receiving cavity and welded to the front receiving cavity; The rear connecting block is provided with a rear receiving cavity, which is located below the rear protrusion. The rear support leg is embedded in the rear receiving cavity and welded to the rear receiving cavity.

[0012] Preferably, the front accommodating cavity has a front opening, and the front support leg extends into the front opening of the front accommodating cavity to achieve a horizontal connection with the front connecting block; The rear accommodating cavity has a lower opening, and the rear support leg extends into the lower opening of the rear accommodating cavity to achieve a vertical connection with the rear connecting block.

[0013] Preferably, both the front groove and the rear groove are polygonal grooves, and the polygonal grooves are chamfered. The front protrusion is a polygonal protrusion that matches the shape of the front groove, and the rear protrusion is a polygonal protrusion that matches the shape of the rear groove.

[0014] Preferably, both the front fixing hole and the rear fixing hole are stepped smooth holes, and both the front connecting hole and the rear connecting hole are threaded holes. The front connecting hole and the front fixing hole are connected by a bolt passing through the front fixing hole and screwing into the front connecting hole. The rear connecting hole and the rear fixing hole are connected by a bolt passing through the rear fixing hole and screwing into the rear connecting hole.

[0015] The beneficial effects of this utility model are: When applied to electric bicycles, this invention enables the detachable connection of the rack, reducing transportation space and costs and facilitating the replacement of the front frame, while also ensuring the structural stability of the rack. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] Figure 1 This is a perspective view of a split-type shelving unit according to an embodiment of the present utility model; Figure 2 This is a side view of a split-type shelving unit according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the connection between the split-type shelving and the vehicle frame according to an embodiment of the present utility model; Figure 4 This is a perspective view of the face frame according to an embodiment of the present utility model; Figure 5 This is a top view of the face frame according to an embodiment of the present utility model; Figure 6 yes Figure 5 Sectional view along the middle AA direction; Figure 7 yes Figure 5 Sectional view along the BB direction; Figure 8 The front bracket according to an embodiment of the present utility model is a three-dimensional Figure 1 ; Figure 9 The front bracket according to an embodiment of the present utility model is a three-dimensional Figure 2 ; Figure 10 This is a side view of the front bracket according to an embodiment of the present utility model; Figure 11 The three-dimensional rear support according to the embodiment of this utility model Figure 1 ; Figure 12 The three-dimensional rear support according to the embodiment of this utility model Figure 2 ; Figure 13 This is a side view of the rear bracket according to an embodiment of the present utility model; Figure 14 The three-dimensional front connecting block according to an embodiment of the present utility model Figure 1 ; Figure 15 The three-dimensional front connecting block according to an embodiment of the present utility model Figure 2 ; Figure 16 This is a side view of the front connecting block according to an embodiment of the present utility model; Figure 17 yes Figure 16 A cross-sectional view along the CC direction; Figure 18 The three-dimensional rear connecting block according to an embodiment of the present utility model Figure 1 ; Figure 19 The three-dimensional rear connecting block according to an embodiment of the present utility model Figure 2 ; Figure 20 This is a side view of the rear connecting block according to an embodiment of the present utility model; Figure 21 yes Figure 20 A sectional view along the DD direction.

[0018] In the picture: 1. Faceplate; 11. Front groove; 111. First groove; 112. Second groove; 12. Rear groove; 121. Third groove; 122. Fourth groove; 13. Front fixing hole; 131. First fixing hole; 132. Second fixing hole; 14. Rear fixing hole; 141. Third fixing hole; 142. Fourth fixing hole; 2. Front bracket; 21. Front connecting block; 211. Front protrusion; 2111. First protrusion; 2112. Second protrusion; 212. Front connecting hole; 2121. First connecting hole; 2122. Second connecting hole; 213. Front weight reduction hole; 214. Front guide hole; 215. Front receiving cavity; 22. Front support leg; 3. Rear bracket; 31. Rear connecting block; 311. Rear protrusion; 3111. Third protrusion; 3112. Fourth protrusion; 312. Rear connecting hole; 3121. Third connecting hole; 3122. Fourth connecting hole; 313. Rear weight reduction hole; 314. Rear guide hole; 315. Rear receiving cavity; 32. Rear support leg; 4. Frame. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0020] It should be noted that, in order to clearly show the structural relationship of the internal key components of this utility model, some pipelines, lines, support brackets and other components of the actual product are omitted in the drawings. However, the specific design schemes of these omitted components are all easily implemented by those skilled in the art based on the technical solutions currently provided by this utility model and conventional design.

[0021] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0022] Example 1: like Figures 1-21 As shown, the modular shelving unit includes a front frame 1, a front support 2, and a rear support 3. The face frame 1 is provided with a front groove 11 and a rear groove 12 with the opening facing downwards. A front fixing hole 13 is provided on one side of the front groove 11, and a rear fixing hole 14 is provided on one side of the rear groove 12. The front bracket 2 includes a front connecting block 21 and a front support leg 22. The front connecting block 21 is provided with a front protrusion 211 and a front connecting hole 212. The front bracket 2 is connected to the frame 4 through the front support leg 22, and is detachably connected to the front frame 1 by the front protrusion 211 being embedded in the front groove 11 and the bolt connection between the front connecting hole 212 and the front fixing hole 13. The rear support 3 includes a rear connecting block 31 and a rear support leg 32. The rear connecting block 31 is provided with a rear protrusion 311 and a rear connecting hole 312. The rear support 3 is connected to the frame 4 through the rear support leg 32, and is detachably connected to the front frame 1 by the rear protrusion 311 being embedded in the rear groove 12 and the bolt connection between the rear connecting hole 312 and the rear fixing hole 14.

[0023] In practical implementation, addressing the issues of large space occupation and inconvenient function switching in existing racking technologies, and the insufficient stability of existing split racks fixed only by screws and nuts, this utility model adopts a detachable connection through the interlocking of protrusions (front protrusion 211 / rear protrusion 311) and grooves (front groove 11 / rear groove 12) with bolt connections. The interlocking of protrusions and grooves provides quick and accurate pre-positioning and lateral constraint, while the bolt connection provides longitudinal fixation. This dual connection method effectively improves structural stability. Furthermore, the interlocking of protrusions and grooves effectively reduces the impact of vehicle movement on the bolts on the rack, effectively preventing bolt loosening and falling off due to rack vibration. This significantly improves the overall safety and service life of the rack, ensuring the stability of goods and the safety of personnel during vehicle movement.

[0024] The detachable connection achieved by this utility model allows the disassembled parts of the shelf to be laid flat and stacked in the packaging for transportation, effectively reducing the packaging volume, transportation costs and damage rate; the function can be switched by changing the face frame 1 with different functions, without replacing the entire shelf, making the operation simple.

[0025] More specifically, when the bolt is connected from below the face frame 1, the front fixing hole 13 and the rear fixing hole 14 can be designed as smooth holes, and the front connecting hole 212 and the rear connecting hole 312 can be designed as threaded holes. The bolt passes through the smooth hole and is screwed into the threaded hole to complete the fixation. The scenario of connecting the bolt from below the face frame 1 is suitable for situations where there is no obstruction above the face frame 1, which facilitates quick installation and disassembly.

[0026] When the bolt is connected from below the face frame 1, the front connecting hole 212 and the rear connecting hole 312 can be designed as smooth holes, and the front fixing hole 13 and the rear fixing hole 14 can be designed as threaded holes. The bolt passes through the smooth hole and is screwed into the threaded hole for fixation. The scenario of connecting the bolt from below the face frame 1 is suitable for situations where there are obstructions on the face frame 1, such as accessories such as child seats and storage boxes fixed on the face frame 1. In this case, connecting the bolt from below the face frame 1 makes it easy to replace the face frame 1 without disassembling the accessories.

[0027] Example 2: Furthermore, the front groove 11 includes at least a symmetrically distributed first groove 111 and second groove 112, the front fixing hole 13 is located between the first groove 111 and the second groove 112, and the front protrusion 211 includes at least a first protrusion 2111 that matches the first groove 111 and a second protrusion 2112 that matches the second groove 112. The rear groove 12 includes at least a symmetrically distributed third groove 121 and a fourth groove 122, the rear fixing hole 14 is located between the third groove 121 and the fourth groove 122, and the rear protrusion 311 includes at least a third protrusion 3111 that matches the third groove 121 and a fourth protrusion 3112 that matches the fourth groove 122.

[0028] In practice, the first protrusion 2111 is embedded in the first groove 111, the second protrusion 2112 is embedded in the second groove 112, the third protrusion 3111 is embedded in the third groove 121, and the fourth protrusion 3112 is embedded in the fourth groove 122, and then fixed with bolts. The symmetrically distributed grooves and protrusions make the force on the face frame 1 and the bracket more even, avoiding structural deformation caused by excessive force on a single point. The interlocking of multiple sets of symmetrically distributed grooves and protrusions can increase the contact area and number of mating points between the face frame 1 and the front bracket 2 and the rear bracket 3, which can improve the positioning accuracy and structural stability of the connection, better resist lateral forces, and prevent the face frame 1 from shifting or shaking relative to the bracket.

[0029] Example 3: Furthermore, the front fixing hole 13 includes at least a symmetrically distributed first fixing hole 131 and second fixing hole 132, and the front connecting hole 212 includes at least a first connecting hole 2121 that matches the first fixing hole 131 and a second connecting hole 2122 that matches the second fixing hole 132; The rear fixing hole 14 includes at least a symmetrically distributed third fixing hole 141 and a fourth fixing hole 142, and the rear connecting hole 312 includes at least a third connecting hole 3121 that matches the third fixing hole 141 and a fourth connecting hole 3122 that matches the fourth fixing hole 142.

[0030] In practice, the first fixing hole 131 is bolted to the first connecting hole 2121, the second fixing hole 132 is bolted to the second connecting hole 2122, the third fixing hole 141 is bolted to the third connecting hole 3121, and the fourth fixing hole 142 is bolted to the fourth connecting hole 3122. The symmetrically distributed bolt connection points ensure a more even distribution of fixing force. The multiple sets of symmetrical fixing holes and connecting holes, when bolted together, enhance the connection strength between the frame 1 and the support, avoiding the loosening or breakage problems associated with single-point bolt connections. This makes the connection more reliable, capable of withstanding greater longitudinal forces, and ensures a more secure connection between the frame 1 and the support. During long-term use or when carrying heavy items, this effectively prevents loosening and improves the structural reliability and safety of the shelving.

[0031] Example 4: Furthermore, the front connecting block 21 is provided with a front weight reduction hole 213, which is located between the first connecting hole 2121 and the second connecting hole 2122; The rear connecting block 31 is provided with a rear weight reduction hole 313, which is located between the third connecting hole 3121 and the fourth connecting hole 3122.

[0032] In practical implementation, since the force on the front connecting block 21 and the rear connecting block 31 is not concentrated in the middle of the connecting block, but rather in the protruding parts (front protrusion 211 / rear protrusion 311), setting a weight-reducing hole in the middle of the connecting block will not only not significantly affect the load-bearing capacity of the connecting block, but also has the advantages of weight reduction, material saving, and reduced manufacturing costs. The connecting block can usually be manufactured by casting a blank and then machining (mainly punching and tapping). The weight-reducing hole can be formed simultaneously during the casting stage, or it can be achieved mechanically in subsequent processing.

[0033] Example 5: Furthermore, the bottom of the front connecting block 21 is provided with a front guide hole 214, which is located at the outer edge of the front connecting hole 212; The bottom of the rear connecting block 31 is provided with a rear guide hole 314, which is located on the outer edge of the rear connecting hole 312.

[0034] In practical implementation, when the bolts are installed from below the faceplate 1, the front guide hole 214 and the rear guide hole 314 can guide the bolts to quickly align with the front connecting hole 212 and the rear connecting hole 312, facilitating the installation and removal of the bolts using an L-shaped wrench. When the faceplate 1 is used to fix structures such as child seats and storage boxes, it is inconvenient to disassemble from above; the bolt connection points can be quickly located from below through the guide holes for installation and removal.

[0035] Example 6: Furthermore, the depth of the front groove 11 is no greater than the height of the front protrusion 211, so that the main body of the front connecting block 21 fits tightly against the bottom of the face frame 1. The depth of the rear groove 12 is no greater than the height of the rear protrusion 311, so that the main body of the rear connecting block 31 fits tightly against the bottom of the face frame 1.

[0036] In practical implementation, when the frame 1 is in a fitted state, the load on it can be transferred to the support legs through the main body of the connecting block, thereby reducing stress concentration between the groove and the protrusion. The tight fit between the frame 1 and the connecting block makes the force transmission path shorter and more direct, reduces the additional torque caused by gaps, reduces stress concentration at the connection points, improves the overall load-bearing capacity and structural stability of the rack, and extends its service life.

[0037] Example 7: Furthermore, the front connecting block 21 is provided with a front receiving cavity 215, which is located below the front protrusion 211. The front support leg 22 is embedded in the front receiving cavity 215 and welded to the front receiving cavity 215. The rear connecting block 31 is provided with a rear receiving cavity 315, which is located below the rear protrusion 311. The rear support leg 32 is embedded in the rear receiving cavity 315 and welded to the rear receiving cavity 315.

[0038] In practical implementation, the presence of the accommodating cavity allows for welding of the inner wall of the front accommodating cavity 215 to the embedded portion of the front support leg 22, thereby increasing the welding area and connection strength; the welding of the rear accommodating cavity 315 to the rear support leg 32 is similar. The welding of the accommodating cavity to the support leg increases the contact area and structural strength of the connection, enabling the support leg to more stably transfer the load to the connecting block, thus improving the overall load-bearing capacity and deformation resistance of the support.

[0039] Example 8: Furthermore, the front accommodating cavity 215 is provided with a front opening, and the front support leg 22 extends into the front opening of the front accommodating cavity 215 to achieve a horizontal connection with the front connecting block 21. The rear accommodating cavity 315 has a lower opening, and the rear support leg 32 extends into the lower opening of the rear accommodating cavity 315 to achieve vertical connection with the rear connecting block 31.

[0040] In practical implementation, considering the installation angle and spatial layout of the bracket, the horizontal connection allows the front support leg 22 to better resist horizontal forces, while the vertical connection allows the rear support leg 32 to better withstand vertical loads. For the front accommodating cavity 215, openings can be provided on both its lower and front sides, and these openings are continuous, suitable for connecting the front support leg 22 with a larger diameter connecting section.

[0041] Example 9: Furthermore, both the front groove 11 and the rear groove 12 are polygonal grooves, and the polygonal grooves are chamfered. The front protrusion 211 is a polygonal protrusion that matches the shape of the front groove 11, and the rear protrusion 311 is a polygonal protrusion that matches the shape of the rear groove 12.

[0042] In practical implementation, the interlocking of the polygonal groove and the polygonal protrusion provides better circumferential positioning and prevents relative rotation; the chamfer avoids stress concentration and facilitates the insertion of the protrusion into the groove. The polygonal groove is preferably a rectangular groove, and the polygonal protrusion is preferably a rectangular protrusion. The rectangular groove and the rectangular protrusion have simple structures, are easy to process, and have high fitting accuracy, which can effectively limit the relative rotation between the face frame 1 and the support.

[0043] Example 10: Furthermore, both the front fixing hole 13 and the rear fixing hole 14 are stepped smooth holes, and both the front connecting hole 212 and the rear connecting hole 312 are threaded holes. The front connecting hole 212 and the front fixing hole 13 are connected by a bolt passing through the front fixing hole 13 and screwing into the front connecting hole 212. The rear connecting hole 312 and the rear fixing hole 14 are connected by a bolt passing through the rear fixing hole 14 and screwing into the rear connecting hole 312.

[0044] In practice, the stepped hole design ensures that the bolt connection will not affect the load-bearing goods. Furthermore, due to the downward weight of the bolts and the fact that the load-bearing goods above the frame 1 usually cover the bolts, it is difficult for the bolts to loosen or fall off from above the frame 1.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular shelving unit, comprising a front frame (1), a front support (2), and a rear support (3), characterized in that: The face frame (1) is provided with a front groove (11) and a rear groove (12) with the opening facing downward. A front fixing hole (13) is provided on one side of the front groove (11), and a rear fixing hole (14) is provided on one side of the rear groove (12). The front bracket (2) includes a front connecting block (21) and a front support leg (22). The front connecting block (21) is provided with a front protrusion (211) and a front connecting hole (212). The front bracket (2) is connected to the frame (4) through the front support leg (22), and is detachably connected to the face frame (1) by the front protrusion (211) being embedded in the front groove (11) and the bolt connection between the front connecting hole (212) and the front fixing hole (13). The rear support (3) includes a rear connecting block (31) and a rear support leg (32). The rear connecting block (31) is provided with a rear protrusion (311) and a rear connecting hole (312). The rear support (3) is connected to the frame (4) through the rear support leg (32), and is detachably connected to the face frame (1) by the rear protrusion (311) being embedded in the rear groove (12) and the bolt connection between the rear connecting hole (312) and the rear fixing hole (14).

2. The split-type shelving according to claim 1, characterized in that: The front groove (11) includes at least a symmetrically distributed first groove (111) and second groove (112), the front fixing hole (13) is located between the first groove (111) and the second groove (112), and the front protrusion (211) includes at least a first protrusion (2111) that matches the first groove (111) and a second protrusion (2112) that matches the second groove (112). The rear groove (12) includes at least a symmetrically distributed third groove (121) and fourth groove (122), the rear fixing hole (14) is located between the third groove (121) and the fourth groove (122), and the rear protrusion (311) includes at least a third protrusion (3111) that matches the third groove (121) and a fourth protrusion (3112) that matches the fourth groove (122).

3. The split-type shelving according to claim 2, characterized in that: The front fixing hole (13) includes at least a first fixing hole (131) and a second fixing hole (132) symmetrically distributed, and the front connecting hole (212) includes at least a first connecting hole (2121) matching the first fixing hole (131) and a second connecting hole (2122) matching the second fixing hole (132). The rear fixing hole (14) includes at least a symmetrically distributed third fixing hole (141) and fourth fixing hole (142), and the rear connecting hole (312) includes at least a third connecting hole (3121) that matches the third fixing hole (141) and a fourth connecting hole (3122) that matches the fourth fixing hole (142).

4. The split-type shelving according to claim 3, characterized in that: The front connecting block (21) is provided with a front weight reduction hole (213), which is located between the first connecting hole (2121) and the second connecting hole (2122); The rear connecting block (31) is provided with a rear weight reduction hole (313), which is located between the third connecting hole (3121) and the fourth connecting hole (3122).

5. The split-type shelving according to claim 1, characterized in that: The bottom of the front connecting block (21) is provided with a front guide hole (214), and the front guide hole (214) is located on the outer edge of the front connecting hole (212); The bottom of the rear connecting block (31) is provided with a rear guide hole (314), which is located on the outer edge of the rear connecting hole (312).

6. The split-type shelving according to claim 1, characterized in that: The depth of the front groove (11) is not greater than the height of the front protrusion (211) so that the main body of the front connecting block (21) fits tightly against the bottom of the face frame (1); The depth of the rear groove (12) is not greater than the height of the rear protrusion (311) so that the main body of the rear connecting block (31) fits tightly against the bottom of the face frame (1).

7. The split-type shelving according to claim 1, characterized in that: The front connecting block (21) is provided with a front receiving cavity (215), the front receiving cavity (215) is located below the front protrusion (211), and the front support leg (22) is embedded in the front receiving cavity (215) and welded to the front receiving cavity (215); The rear connecting block (31) is provided with a rear receiving cavity (315), which is located below the rear protrusion (311). The rear support leg (32) is embedded in the rear receiving cavity (315) and welded to the rear receiving cavity (315).

8. The split-type shelving according to claim 7, characterized in that: The front accommodating cavity (215) is provided with a front opening, and the front support leg (22) extends into the front opening of the front accommodating cavity (215) to achieve horizontal connection with the front connecting block (21); The rear accommodating cavity (315) has a lower opening, and the rear support leg (32) extends into the lower opening of the rear accommodating cavity (315) to achieve vertical connection with the rear connecting block (31).

9. The split-type shelving according to any one of claims 1 to 8, characterized in that: Both the front groove (11) and the rear groove (12) are polygonal grooves, and the polygonal grooves are chamfered. The front protrusion (211) is a polygonal protrusion that matches the shape of the front groove (11), and the rear protrusion (311) is a polygonal protrusion that matches the shape of the rear groove (12).

10. The split-type shelving according to any one of claims 1 to 8, characterized in that: The front fixing hole (13) and the rear fixing hole (14) are both stepped smooth holes. The front connecting hole (212) and the rear connecting hole (312) are both threaded holes. The front connecting hole (212) and the front fixing hole (13) are connected by a bolt passing through the front fixing hole (13) and screwing into the front connecting hole (212). The rear connecting hole (312) and the rear fixing hole (14) are connected by a bolt passing through the rear fixing hole (14) and screwing into the rear connecting hole (312).

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