A warehouse goods stacking rack post plug-in device

Abstract

The utility model provides a kind of warehousing goods stacking frame stand column plug-in device, belong to goods warehousing technical field, this warehousing goods stacking frame stand column plug-in device includes plug-in main part, locking piece and guide boss, the plug-in main part is cylindrical, one end of the plug-in main part has plug-in end, other end has receiving end, the outer diameter size of plug-in end gradually decreases along axial direction and forms conical tapering section, the inner wall of receiving end is equipped with inner cavity, the inner diameter of inner cavity gradually increases along axial direction and forms conical expanding section, the locking piece is arranged in the outer wall surface of plug-in main part, the locking piece includes elastic dog and fixed seat, the fixed seat is fixed in the middle position of plug-in main part outer wall surface by riveting mode, one end of the elastic dog is hinged connection with the fixed seat, the utility model can solve the technical problems of the existing warehousing goods stacking frame when connecting adjacent stand column, such as centering difficulty, low plug-in precision.

Description

Technical Field

[0001] This utility model belongs to the field of cargo storage technology, specifically, it relates to a column insertion device for cargo stacking racks. Background Technology

[0002] As a crucial facility in modern warehousing and logistics systems, warehouse racking systems are widely used in various warehouses, logistics centers, and production workshops for storing and managing goods of various specifications. Racks are typically assembled from multiple uprights and beams. The quality of the connections between the uprights directly affects the load-bearing capacity and safety of the entire rack. In practice, warehousing companies frequently need to adjust the rack structure according to changes in the type, size, and storage requirements of goods, including adding or removing layers, changing the span, and rearranging the layout. Traditional upright connections primarily use bolt fastening. While this method offers high connection strength, it suffers from drawbacks such as cumbersome assembly procedures, the need for specialized tools, and long assembly times. In applications requiring frequent adjustments to the rack structure, the inefficiency of bolt connections is particularly pronounced. Furthermore, bolts are prone to loosening due to vibration and load changes during long-term use, requiring regular inspection and tightening, which increases maintenance costs. Some companies have tried to use simple plug-in methods to connect columns, achieving quick connection by setting pins or latches at the ends of the columns. However, these simple plug-in devices generally have problems such as difficulty in centering, large plug gaps, and unreliable locking. When bearing heavy objects, the connection is prone to loosening or even falling off, posing safety hazards. Some plug-in devices have added locking mechanisms, but the locking operation requires additional actions or tools, failing to truly achieve the goal of rapid assembly. Therefore, there is an urgent need for a column plug-in device that can ensure connection strength and stability while enabling rapid assembly and disassembly, to meet the dual requirements of modern warehousing and logistics for the flexibility and reliability of stacking racks. Utility Model Content

[0003] In view of this, the present invention provides a warehouse goods stacking rack column insertion device, which can solve the technical problems of difficulty in centering and low insertion accuracy when connecting adjacent columns of existing warehouse goods stacking racks.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a warehouse goods stacking rack column insertion device, which includes an insertion body, a locking device, and a guide boss. The insertion body is cylindrical, with one end having an insertion end and the other end having a receiving end. The outer diameter of the insertion end gradually decreases along the axial direction to form a tapered tapered section. The inner wall of the receiving end has an inner cavity, the inner diameter of which gradually increases along the axial direction to form a tapered expanding section. The locking device is disposed on the outer wall surface of the insertion body and includes an elastic claw and a fixing seat. The fixing seat is fixed to the middle position of the outer wall surface of the insertion body by riveting. One end of the elastic claw is hinged to the fixing seat, and the other end is a free end that extends outward to form a holding protrusion. The guide boss is disposed on the outer surface of the tapered tapered section of the insertion end and is evenly distributed along the circumference of the insertion body. Each guide boss has a fan-shaped protrusion structure, and the protrusion height of the guide boss gradually decreases along the axial direction of the insertion end.

[0006] The technical effects of the warehouse cargo stacking rack column insertion device provided by this utility model are as follows: Through the cooperative design of the tapered tapered insertion end and the tapered tapered receiving end of the insertion body, automatic centering and guidance can be achieved during the insertion of adjacent columns. The wedge-tightening effect generated by the tapered structure ensures the stability of the insertion connection. The elastic claws and the fixed seat automatically lock into the preset slot of the column after insertion to form a secondary lock. The fan-shaped protrusion structure of the guide boss contacts the inner cavity of the receiving end at the initial stage of insertion to generate a guiding effect. The gradually decreasing height of the protrusion along the axial direction makes the insertion process smoother and avoids sudden changes in insertion resistance. The overall structure is simple, reliable and easy to assemble and disassemble quickly.

[0007] Based on the above technical solution, the warehouse cargo stacking rack column insertion device of this utility model can be further improved as follows:

[0008] The cone angle of the tapered tapered section of the plug-in end is 3~8°.

[0009] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the cone angle of the tapered tapered section of the plug end is set in the range of 3~8°. This angle range not only ensures the guiding accuracy during plugging, but also avoids insufficient wedge force due to excessive cone or plugging difficulty due to excessive cone. Within this cone angle range, the contact area between the plug body and the inner cavity of the column is moderate, which can generate sufficient radial expansion force under the action of axial plugging force, so that the plug connection has good pull-out resistance and load-bearing capacity. At the same time, this cone angle range is also convenient for processing, manufacturing and quality control.

[0010] Furthermore, the cone angle of the tapered expanding section of the receiving end is equal to the cone angle of the tapered contracting section of the insertion end.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design that the cone angle of the tapered expanding section of the receiving end is equal to the cone angle of the tapered contracting section of the plugging end ensures that the cone surfaces are completely in contact when the two plugging devices are plugged into each other, maximizing the contact area and thus improving the connection strength. The equal cone angles ensure the synchronous wedging effect during the plugging process, avoiding stress concentration or poor clearance fit caused by the mismatch of cone angles. This symmetrical design also simplifies the production process, reduces manufacturing costs, and makes the plugging device bidirectionally universal.

[0012] Furthermore, the number of guide bosses is 3 to 6, and the circumferential spacing between each guide boss is equal.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the number of guide bosses is set to 3 to 6 and the circumferential spacing is kept equal. This number range ensures sufficient guiding support and avoids the increase in insertion resistance caused by too many bosses. The evenly distributed guide bosses make the radial support force evenly distributed during the insertion process, preventing the insertion body from skewing or jamming. The synergistic effect of multiple guide bosses effectively limits the radial displacement and angular deflection during the insertion process, and improves the coaxiality and assembly accuracy of the insertion.

[0014] Furthermore, the central angle of the fan-shaped cross-section of the guide boss is 15~30°.

[0015] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the central angle of the fan-shaped cross-section of the guide boss is set within the range of 15~30°. This angle range allows the guide boss to have an appropriate contact width, which can provide a stable guiding effect without increasing frictional resistance due to excessive contact surface. The central angle design of the fan-shaped structure gives the boss good strength and rigidity when bearing radial force, avoiding deformation or damage to the boss during the insertion process. At the same time, this angle range also facilitates the gradual contact between the guide boss and the inner wall of the receiving end.

[0016] Furthermore, the elastic claw has an arc-shaped plate structure, and the radius of curvature of the elastic claw matches the radius of curvature of the outer wall surface of the insertion body.

[0017] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the elastic claw has an arc-shaped plate structure and its arc curvature radius matches the curvature radius of the outer wall of the insertion body. This design allows the elastic claw to maintain a small gap with the outer wall of the insertion body when it is not under force. When inserted into place, the elastic claw naturally fits against the inner wall of the column. The uniform stress distribution of the arc structure avoids fatigue fracture caused by stress concentration. The curvature radius matching design also makes the movement trajectory of the holding protrusion when it is inserted into the slot more reasonable, thus improving the reliability and service life of the locking.

[0018] Furthermore, the retaining protrusion is triangular wedge-shaped, and the inclined surface of the retaining protrusion forms an acute angle with the extending direction of the elastic claw.

[0019] The beneficial effects of the above-mentioned improvement scheme are as follows: the retaining protrusion is triangular wedge-shaped and the inclined surface forms an acute angle with the extension direction of the elastic claw. This structure makes the resistance encountered when the retaining protrusion slides into the column slot along the inclined surface during the insertion process less, and the insertion action is smooth. When subjected to the pull-out force, the self-locking effect generated by the triangular wedge-shaped structure makes the retaining protrusion firmly wedged into the slot, forming an effective anti-pull-out lock. The acute angle design also makes the elastic deformation of the elastic claw moderate when subjected to external force, which is convenient for insertion and ensures the firmness of the lock.

[0020] Compared with existing technologies, the beneficial effects of the warehouse goods stacking rack column insertion device provided by this utility model are as follows: This utility model, through the cooperative design of the tapered tapered and tapered expanding sections of the insertion body, solves the problems of automatic centering and wedge-locking during column connection from a structural principle perspective. The guiding effect generated by the tapered structure during insertion significantly improves assembly accuracy. The fan-shaped protrusion structure of the guide boss, in conjunction with the tapered surface, provides multi-point support and guidance, ensuring a smooth insertion process. The locking mechanism formed by the elastic claw and the fixed seat automatically achieves secondary locking after insertion, effectively preventing axial pull-out and relative rotation under load. The triangular wedge-shaped design of the holding protrusion enhances the locking function. The self-locking feature improves the reliability of the connection. The overall structure of the device is simple, consisting of only three main components: the plug-in body, the locking fastener, and the guide boss. This facilitates processing, manufacturing, and quality control. Assembly requires no tools for quick plugging and locking, and disassembly is achieved simply by pressing the elastic claws. This significantly improves the assembly and adjustment efficiency of the storage rack. The selection of metal materials and the reasonable wall thickness design give the device sufficient load-bearing capacity and service life, meeting the long-term use requirements of the storage environment. Compared with traditional bolted connections, this device significantly shortens the assembly time while ensuring connection strength, and avoids the problems of loose or lost bolts, thus improving the overall efficiency and safety of storage operations. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A front view of a warehouse goods stacking rack column plug-in device;

[0023] Figure 2 A cross-sectional view of a warehouse cargo stacking rack column insertion device;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 10. Insertion body; 11. Insertion end; 111. Inner cavity; 12. Receiving end; 20. Locking fastener; 21. Elastic claw; 22. Fixing seat; 30. Guide boss. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] like Figure 1-2 The diagram shows an embodiment of a warehouse goods stacking rack column insertion device provided by this utility model. In this embodiment, it includes an insertion body 10, a locking fastener 20, and a guide boss 30. The insertion body is cylindrical, with one end having an insertion end 11 and the other end having a receiving end 12. The outer diameter of the insertion end gradually decreases axially to form a tapered tapered section. The inner wall of the receiving end has an inner cavity 111, the inner diameter of which gradually increases axially to form a tapered expanding section. The locking fastener is disposed on the insertion... The locking fasteners on the outer wall of the main body include elastic claws 21 and fixed seats 22. The fixed seats are fixed to the middle position of the outer wall of the main body by riveting. One end of the elastic claw is hinged to the fixed seat, and the other end is a free end. The free end extends outward and forms a holding protrusion. The guide protrusions are set on the outer surface of the tapered tapered section of the insertion end. The guide protrusions are evenly distributed along the circumference of the main body. Each guide protrusion has a fan-shaped protrusion structure. The protrusion height of the guide protrusions gradually decreases along the axial direction of the insertion end.

[0028] This application is for use in connecting adjacent uprights of a stacking rack.

[0029] In the above technical solution, the cone angle of the tapered tapered section of the plug end is 3~8°.

[0030] Furthermore, in the above technical solution, the cone angle of the tapered expanding section of the receiving end is equal to the cone angle of the tapered contracting section of the insertion end.

[0031] Furthermore, in the above technical solution, the number of guide bosses is 3 to 6, and the circumferential spacing between each guide boss is equal.

[0032] Furthermore, in the above technical solution, the central angle of the fan-shaped cross-section of the guide boss is 15~30°.

[0033] Furthermore, in the above technical solution, the elastic claw has an arc-shaped plate structure, and the radius of curvature of the elastic claw matches the radius of curvature of the outer wall surface of the insertion body.

[0034] Furthermore, in the above technical solution, the retaining protrusion is triangular wedge-shaped, and the inclined surface of the retaining protrusion forms an acute angle with the extension direction of the elastic claw.

[0035] Before use, first check the condition of each component of the connector, confirming that there is no obvious deformation or damage on the surface of the connector body, that the elastic claws can move normally, and that the guide boss is intact and undamaged. Prepare the two columns to be connected, with the connector end of one column (with the connector already installed) facing the other column, and the receiving end of the connector on the other column facing the first column. The operator holds both columns with both hands, roughly aligning their axes. To begin the connection, first align the guide boss of the connector end with the inner opening of the receiving end, and gently push to allow the connector end to enter the receiving end. At this point, the guide boss first contacts the inner wall of the receiving end, providing guidance. Continue applying axial thrust, and the tapered converging section of the connector body gradually enters the tapered expanding section of the receiving end. As the connection depth increases, the operator will feel... As the insertion resistance gradually increases, this is a normal phenomenon caused by the wedging effect of the conical contact. Keep the direction of the thrust consistent with the column axis and avoid applying force at an angle. When the insertion reaches the position of the elastic claw and is close to the column slot, the elastic claw will be compressed and bent inward by the inner wall of the column. At this time, it is necessary to slightly increase the thrust to overcome the elastic resistance of the elastic claw. When a crisp click is heard, it indicates that the retaining protrusion has been engaged in the slot and the insertion assembly is complete. Release both hands to check the connection status. Try to rotate and pull the column slightly to confirm that the connection is firm and not loose. When disassembling, the operator presses the outer side of the elastic claw with their fingers to disengage the retaining protrusion from the slot, and at the same time applies axial tension to separate the two columns. The entire insertion and disassembly process does not require any tools and can be completed in a few seconds by a single person, which significantly improves the assembly and adjustment efficiency of the warehouse stacking rack.

[0036] The following is a specific embodiment 1 of this utility model: In this embodiment, the plug-in body is made of national standard Q235 carbon structural steel pipe with an outer diameter of 50mm and a wall thickness of 3mm. The total length of the plug-in body is 180mm, the plug-in end length is 80mm, and the receiving end length is 100mm. The tapered tapered section of the plug-in end has a cone angle of 5°, the starting end outer diameter is 50mm, and the ending end outer diameter is 43mm. The surface of the tapered tapered section is precision machined to achieve a surface roughness of Ra1.6, ensuring smoothness during plugging. The tapered tapered section of the receiving end also has a cone angle of 5°, the starting end inner diameter is 50mm, and the ending end inner diameter is 57mm. The inner cavity surface is also precision bored to achieve the same surface roughness. The surface of the plug-in body is galvanized with a zinc layer thickness of 8~12um, providing good rust and corrosion resistance. To accommodate humidity variations in the storage environment, four guide bosses are evenly distributed circumferentially along the outer surface of the tapered tapered section of the insertion end. The central angle between adjacent guide bosses is 90°, and the central angle of the fan-shaped cross-section of each guide boss is 20°. The protrusion height of the guide boss at the beginning of the tapered tapered section is 4mm, gradually decreasing to 1mm along the axial direction towards the end. The guide bosses are manufactured integrally with the insertion body, formed by die stamping or welding reinforcement. The locking components include elastic claws and fixing seats. The fixing seats are stamped from 2mm thick Q235 steel plates, with a rectangular bottom surface, a length of 30mm, and a width of 20mm. The fixing seats are riveted to the outer wall of the insertion body at a distance of 60mm from the insertion end using 4mm diameter aluminum rivets, with a total of four riveting points. The contact area between the fixing seat and the outer wall of the insertion body is 420mm². 2The elastic claw occupies 70% of the bottom area of ​​the fixed base. It is made of 65Mn spring steel plate with a thickness of 1.5mm. The elastic claw has an arc-shaped plate structure with an arc length of 45mm and an arc radius of curvature of 25mm, matching the radius of curvature of the outer wall of the insertion body. One end of the elastic claw is hinged to the fixed base via a 3mm diameter stainless steel pin. Cotter pins at both ends of the pin prevent it from falling off. The free end of the elastic claw extends outwards by 25mm, forming a triangular wedge-shaped holding protrusion with a height of 3mm and a base length of 8mm. The inclined surface forms a 30° acute angle with the extension direction of the elastic claw. In its free state, the radial gap between the free end of the elastic claw and the outer wall of the insertion body is 2mm. This gap design allows the elastic claw to be compressed by the inner wall of the column during insertion and to quickly rebound and hold when it reaches the slot position. The spring steel material undergoes quenching and tempering heat treatment, achieving a hardness of HRC42~48. With excellent elasticity and fatigue strength, it can withstand more than 100,000 repeated bending deformations without plastic deformation or fracture. The surface of the elastic claws is blackened to enhance corrosion resistance. The total weight of the entire plug-in device is approximately 0.6 kg. Its compact structure facilitates installation and transportation. In actual use, this plug-in device can connect standard warehouse stacking rack columns with an outer diameter of 54 mm and an inner diameter of 50 mm. During plugging, the guide boss first guides the plug-in end into the receiving end. The conical surface provides a wedge-tightening effect. After plugging in, the holding protrusion of the elastic claw engages in the pre-set annular groove on the inner wall of the column. The groove is 3.5 mm deep and 9 mm wide, with a 0.5 mm clearance between the holding protrusion and the groove, ensuring reliable locking and easy disassembly. Tests have shown that this connection device can withstand an axial tensile force of 5000 Newtons without falling off and a radial bending moment of 150 Newtons per meter without significant rotation, fully meeting the load requirements of warehouse stacking racks under normal use.

[0037] The following is another specific embodiment 2 of this utility model: This embodiment 2 is based on embodiment 1, increasing the number of guide bosses to 6, adjusting the central angle between adjacent guide bosses to 60°, reducing the central angle of the fan-shaped cross-section of each guide boss to 15°, increasing the protrusion height of the guide boss at the beginning of the tapered tapered section to 5mm, and gradually decreasing it to 1.5mm along the axial direction towards the end. Increasing the number of guide bosses makes the radial support during the insertion process more uniform, further improving the coaxiality and stability of the insertion, which is particularly suitable for automated warehousing systems with high precision requirements. At the same time, a circular guide ring is added at the end of the insertion end. The guide ring has an outer diameter of 43mm and a thickness of 2mm. The surface of the guide ring is polished, and the surface roughness reaches Ra0.8, making the guiding effect more obvious in the initial stage of insertion and reducing the skill level required of the operator. This improved solution increases the success rate of insertion and reduces the operating force required for insertion while maintaining the original connection strength, making it more suitable for female operators or application scenarios that require frequent assembly.

[0038] The following is another specific embodiment 3 of this utility model: Embodiment 3 is based on Embodiment 1, but increases the number of elastic claws to two. The two elastic claws are symmetrically arranged circumferentially along the insertion body, spaced 180 degrees apart. Each elastic claw is equipped with an independent fixing seat, and the two fixing seats are riveted to opposite sides of the outer wall of the insertion body. The double-claw design significantly improves locking reliability. Even if one elastic claw fails due to accidental damage, the other elastic claw can still provide locking function, avoiding loosening of the connection due to single-point failure. Furthermore, the triangular wedge-shaped structure of the retaining protrusion is optimized into a trapezoidal wedge shape, with an upper base length of 3mm, a lower base length of 8mm, and a height of... The diameter is 3mm, and the tilt angle is adjusted to 25°. The trapezoidal wedge structure increases the contact area between the clamping protrusion and the clamping groove, disperses the contact stress, reduces the wear rate during long-term use, and extends the service life. At the same time, a torsion spring is added to the hinge end of the elastic claw. The torsion spring has an outer diameter of 6mm and a wire diameter of 1mm. The torsion spring provides a continuous reset torque for the elastic claw, ensuring that the elastic claw can quickly and reliably return to the clamping position under any condition. This improved solution is particularly suitable for heavy-duty or high-vibration storage environments. The double-claw design insertion device has been tested and can withstand an axial tensile force of 8000 Newtons and a radial bending moment of 250 Newton-meters. The load-bearing capacity and safety factor have been significantly improved.

[0039] Specifically, the principle of this utility model is as follows: The device uses a conical interference fit principle to achieve automatic centering and wedge locking of the column. When the tapered tapered section of the insertion end is inserted into the tapered tapered expansion section of the receiving end inside the adjacent column, the two conical surfaces gradually come together under the action of axial insertion force. Due to the reasonable design of the cone angle, the radial component force generated by the contact of the conical surfaces causes an interference fit between the outer wall of the insertion body and the inner wall of the column. This interference fit gradually strengthens as the insertion depth increases, and finally reaches the maximum wedge force when fully inserted. The guide boss contacts the inner cavity of the receiving end at the initial stage of insertion. The even distribution of multiple guide bosses ensures that the insertion body always maintains coaxiality with the column axis during the insertion process, avoiding skewing and jamming. The gradually decreasing height design of the guide boss along the axial direction gradually increases the contact area and contact force, realizing a smooth guiding process. When the insertion is close to the end, the elastic claws hold the device. The protrusion aligns with the pre-set slot on the inner wall of the column. The elastic claw rebounds quickly under its own elastic force, locking the protrusion into the slot to form a mechanical lock. This lock is a secondary safety measure based on the conical wedge tightening. The triangular wedge structure of the protrusion generates a self-locking effect when subjected to pull-out force. The greater the pull-out force, the greater the normal pressure between the protrusion and the slot, thus enhancing the locking force. The fixing seat is firmly connected to the insertion body by riveting, providing a reliable support point for the elastic claw. This ensures that the elastic claw will not fail due to loosening during repeated use. All structural elements of the entire device work together to achieve the functions of rapid insertion, automatic centering, wedge tightening and locking, and reliable anti-disengagement. The conical structure provides the main connection strength and stability, the guide boss ensures insertion accuracy, and the elastic claw provides safety locking. The three complement each other to form a complete technical solution.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A warehouse goods shelf column insertion device, characterized in that, The device includes a plug-in body, a locking fastener, and a guide boss. The plug-in body is cylindrical, with a plug-in end at one end and a receiving end at the other. The outer diameter of the plug-in end gradually decreases axially to form a tapered section. The receiving end has an inner cavity on its inner wall, and the inner diameter of the cavity gradually increases axially to form a tapered expansion section. The locking fastener is disposed on the outer wall surface of the plug-in body and includes an elastic claw and a fixing seat. The fixing seat is fixed to the middle position of the outer wall surface of the plug-in body by riveting. One end of the elastic claw is hinged to the fixing seat, and the other end is a free end that extends outward to form a retaining protrusion. The guide boss is disposed on the outer surface of the tapered expansion section of the plug-in end and is evenly distributed along the circumference of the plug-in body. Each guide boss has a fan-shaped protrusion structure, and the protrusion height of the guide boss gradually decreases axially along the plug-in end.

2. The warehouse goods stacking rack column plug-in device according to claim 1, characterized in that, The taper angle of the tapered tapered section of the plug end is 3~8°.

3. A warehouse goods stacking rack column plug-in device according to claim 2, characterized in that, The cone angle of the tapered expanding section of the receiving end is equal to the cone angle of the tapered contracting section of the insertion end.

4. The warehouse rack column splicing device according to claim 3, characterized in that, The number of guide bosses is 3 to 6, and the circumferential spacing between each guide boss is equal.

5. A warehouse rack column splicing device according to claim 4, characterized in that, The central angle of the fan-shaped cross-section of the guide boss is 15~30°.

6. A warehouse rack post splicing device according to claim 5, characterized in that, The elastic claw has an arc-shaped plate structure, and the radius of curvature of the arc-shaped claw matches the radius of curvature of the outer wall surface of the insertion body.

7. A warehouse rack post splicing device according to claim 6, characterized in that, The retaining protrusion is triangular wedge-shaped, and the inclined surface of the retaining protrusion forms an acute angle with the extending direction of the elastic claw.

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