A bearing plate assembly with dismounting limiting structure

Abstract

The application relates to the technical field of medical equipment, in particular to a bearing plate assembly with a dismounting limiting structure, which comprises a plate body and a material box, a plurality of stepped holes are formed in the lower part of the plate body and extend along the Z-axis direction, the back of the material box is provided with a plurality of stepped pins, the material box is inserted into the top of the stepped holes through the stepped pins and is limited to slide to the bottom of the stepped holes, a first groove extending along the Z-axis direction and having an open side is formed in the plate body, the first groove is arranged above the stepped holes, one end of the first groove is rotationally connected with one end of a limiting assembly, the other end of the limiting assembly is provided with an elastic expansion structure having an axial displacement expansion amount, the free end of the limiting assembly is rotationally arranged into the groove through the open side of the first groove and is abutted to the top end face of the material box through the elastic expansion structure. The application can realize quick dismounting and improve the connection stability through double limiting, and has the advantages of convenient dismounting, high practicability and the like.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a carrier plate assembly with a disassembly and assembly limiting structure. Background Technology

[0002] In the clinical application and storage of blood products, the blood components collected by blood banks must undergo strict processing to meet safety standards. To meet connection requirements and improve operational efficiency, blood banks generally use puncture devices to achieve automated operations. These devices rely on standardized mechanical structures to replace traditional manual operations, effectively reducing the risk of contamination and operational errors that may occur during human intervention. They have become key equipment in the modern blood processing flow of blood banks.

[0003] At the puncture device station, several carrier plate assemblies for fixing blood bags need to be evenly arranged along the circumference of the turntable. The lower part of the carrier plate assembly is connected to a material box that holds the blood bags, and the upper part is where the inactivated plasma bags are suspended. During operation, by rotating the turntable, the blood bags suspended on the carrier plate assembly are sequentially subjected to related work such as cap removal, transfusion port cutting, needle puncture, testing, and welding sealing at different stations. However, in the existing technology, the lower part of the carrier plate assembly and the material box are mostly fixed in one piece. In actual operation, the transferred plasma bags and their connecting pipes may leak blood due to problems such as seal failure or pipe damage. The leaked blood will directly contaminate the outer surface of the plasma bags and the material box that holds the plasma bags. Moreover, the contaminants are easy to adhere to the gaps in the integrated structure and are difficult to clean thoroughly. As a special biological material, the residual contamination of blood will not only affect the safety of subsequent blood bag processing, but may also cause cross-contamination of other parts of the puncture device, thereby threatening the hygiene standards of the entire blood processing process.

[0004] Therefore, there is an urgent need for a carrier plate assembly with a disassembly and assembly limiting structure to enable quick disassembly and assembly of the material box and the plate body, so as to facilitate timely and effective removal of contamination caused by leaked blood and reduce the risk of blood contamination to the equipment. Utility Model Content

[0005] The purpose of this application is to provide a carrier plate assembly with a disassembly and assembly limiting structure to solve the problems in the prior art where the carrier plate assembly and the material box are fixedly connected as one piece, resulting in the inability to quickly disassemble and assemble the material box and the plate.

[0006] The embodiments of this application can be implemented through the following technical solutions: A carrier plate assembly with a disassembly and assembly limiting structure includes a plate body and a material box. The lower part of the plate body has a plurality of stepped holes that extend along the Z-axis. The back of the material box has a plurality of stepped pins. The material box is inserted into the top of the stepped hole through the stepped pins and slides within the stepped hole to be limited to its bottom. The plate has a first groove extending along the Z-axis. The first groove is located above the stepped hole. One side of the first groove is open. Along the Z-axis, one end of the first groove is rotatably connected to one end of the limiting component. The other end of the limiting component is provided with an elastic telescopic structure with an axial displacement extension. The free end of the limiting component rotates into the groove through the opening side of the first groove and abuts against the top end face of the material box through the elastic telescopic structure.

[0007] Furthermore, the stepped hole is provided through the plate along the Y-axis direction. The stepped hole is composed of a circular hole segment and a long hole segment connected vertically. The diameter of the upper circular hole segment is larger than the diameter of the lower long hole segment.

[0008] Furthermore, one end of the stepped pin is fixedly connected to the back of the material box, and the other end extends radially outward to form a limiting step. The diameter of the step surface of the limiting step is smaller than the diameter of the circular hole section of the stepped hole, and larger than the diameter of the long hole section of the stepped hole.

[0009] Furthermore, the limiting component includes a first housing, an elastic component, a second housing, and a pin. The top of the first housing is provided with a connecting hole that extends radially through it, and the connecting hole is rotatably connected to the top of the first groove through a connecting pin. The first housing and the second housing are detachably connected and are hollow inside. The pin and the elastic member are housed in the housing, and the end of the pin extends through the end of the second housing to the outside under the elastic force of the elastic member. Under the action of force, the end of the pin moves back and forth between the inside and outside of the end of the second housing.

[0010] Furthermore, the pin head includes a short shaft, a limiting boss, and a limiting portion. The short shaft and the limiting portion are respectively coaxially disposed at both ends of the limiting boss. The limiting boss protrudes outward along the radial direction of the pin head. The outer diameter of the limiting boss is adapted to the cavity of the second housing and is larger than the diameter of the end outlet of the second housing.

[0011] Furthermore, the first housing has a first internal threaded hole extending along its axial direction inside, and the second housing has a first external thread adapted to the first internal threaded hole on its exterior, and an accommodating hole extending along its axial direction inside. The elastic member and the pin are housed in the receiving hole, with one end of the pin abutting against the elastic member and the other end confined to the end of the receiving hole.

[0012] Furthermore, the limiting component also includes a threaded pin, the top outer surface of which is provided with a second external thread, and the upper part of the receiving hole is provided with a second internal thread extending along its axial direction. The threaded pin is received in the receiving hole, and the threaded connection position with the receiving hole is adjustable along its axial direction.

[0013] Furthermore, the lower part of the threaded pin is integrally connected to a thin shaft extending along its axial direction, the thin shaft being positioned toward the pin head, and the elastic member being sleeved on the outside of the thin shaft and the short shaft.

[0014] Furthermore, a limiting block is connected to the back of the material box. The top of the limiting block is provided with a limiting insertion hole extending in the Z direction and a sliding groove extending in the X direction. One end of the sliding groove is connected to the limiting insertion hole and smoothly transitions, while the other end extends in the same direction as the opening side of the first groove to the side edge of the limiting block.

[0015] Furthermore, one of the stepped holes is located at the bottom of the first groove, and a limiting groove is formed at the bottom of the first groove. The limiting groove is adapted to the limiting block, and the limiting block is located at the top of the stepped pin.

[0016] The carrier plate assembly with a disassembly and assembly limiting structure provided by the embodiments of this application has at least the following beneficial effects: On the one hand, the material box is initially limited by sliding along the Z-axis by the cooperation of the stepped hole at the bottom of the plate and the stepped pin on the back of the material box. Then, combined with the rotatable and elastically telescopic limiting component in the first groove, the material box can be locked a second time by abutting the top end of the material box through the elastic telescopic end. This not only breaks the limitation of the traditional fixed integrated structure, allowing the material box to be quickly disassembled to meet the needs of cleaning blood leakage and contamination, but also ensures the stability of the material box during equipment operation (such as the rotation of the turntable driving the switching of work stations) through the dual fixing method of "sliding limit + elastic abutment limit", avoiding displacement or falling off due to vibration.

[0017] On the other hand, the stepped hole design extending along the Z-axis provides clear guidance for the disassembly and assembly of the material box. The adaptation of the first groove opening side with the rotation path of the limiting component, as well as the adaptive adjustment of the elastic telescopic structure to the contact force on the top of the material box, not only reduces the complexity of disassembly and assembly operations, allowing for loading and unloading without the need for additional tools, but also adapts to the installation requirements of material boxes of different specifications. At the same time, it facilitates the quick and accurate reset of the material box after cleaning, reduces equipment downtime for maintenance, improves the continuity of the blood processing process, and further reduces the risk of residual blood contamination from a structural perspective, meeting the dual requirements of medical equipment for hygiene standards and operational efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a carrier plate assembly with detachable components according to this application; Figure 2 This is a schematic diagram showing the disassembled state of a carrier plate assembly with detachable components according to this application. Figure 3 This is a schematic diagram showing the disassembled state of the limiting component in this application; Figure 4 This is a side sectional view of the limiting component in this application; Figure 5 This is a schematic diagram of the back structure of the material box in this application; Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0019] Numbers in the diagram 21-Plate body; 210-Stepped hole; 211-First groove; 213-Limiting groove; 22-Clamp; 23-Limiting component; 24-Material box; 240-Stepped pin; 241-Limiting block; 2410-Limiting insertion hole; 2411-Slide groove; 25-Needle handle limiting part; 26-The aforementioned limiting component; 261-First housing; 2610-First internal threaded hole; 2611-Connecting hole; 262-Threaded pin; 2621-Second external thread; 2622-Fine shaft; 263-Elastic component; 264-Second housing; 2640-Accommodation hole; 2641-First external thread; 265-Pin head; 2651-Short shaft; 2652-Limiting boss; 2653-Limiting part; 27-Connecting pin. Detailed Implementation

[0020] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.

[0021] Furthermore, for ease of understanding, various components on the drawings have been enlarged or reduced, but this is not intended to limit the scope of protection of this application.

[0022] Singular forms of words also include plural meanings, and vice versa.

[0023] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, they are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, in the description of this application, in order to distinguish different units, the terms "first," "second," etc. are used in this specification, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description and claims of this application.

[0024] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the scope of this application. It should also be noted that, unless otherwise expressly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection via an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of these terms in this application.

[0025] For ease of description, the thickness direction of the plate 21 is defined as the Y-axis direction, the direction perpendicular to the Y-axis in the same horizontal plane is the X-axis direction, the length direction of the plate 21 is the Z-axis direction, and the Z-axis is perpendicular to the XY plane constructed by the X-axis and Y-axis.

[0026] like Figures 1 to 3 As shown, a carrier plate assembly with a disassembly and assembly limiting structure includes a plate body 21 and a material box 24. The lower part of the plate body 21 has a plurality of stepped holes 210 extending along the Z-axis. Correspondingly, the back of the material box 24 has a plurality of stepped pins 240. The material box 24 is inserted into the top of the stepped hole 210 through the stepped pins 240 and slides in the stepped hole until the stepped surface of the stepped pin 240 abuts against the stepped structure of the stepped hole 210. This achieves the initial positioning and limiting of the material box 24 along the thickness direction (Y-axis direction) and horizontal direction (X-axis direction) of the plate body 21, preventing the material box 24 from shifting in the above directions when not disassembled.

[0027] Furthermore, a first groove 211 extending along the Z-axis is provided on the plate 21. The first groove 211 is located above the stepped hole 210. The side of the first groove 211 away from the edge of the plate 21 is closed, and the side near the edge of the plate 21 is open. Along the Z-axis, one end of the first groove 211 is rotatably connected to one end of the limiting component 26 through a rotating shaft, so that the limiting component 26 can rotate around the rotating shaft along the surface of the plate 21. The other end of the limiting component 26 is provided with an elastic telescopic structure with an axial displacement extension and contraction amount. The other end of the limiting component 26 rotates into the groove through the open side of the first groove 211 and abuts against the top end face of the material box 24 through the elastic telescopic structure, so as to realize the axial locking and limiting of the material box 24 along the Z-axis, and prevent the material box 24 from sliding upward and detaching from the plate 21 along the stepped hole 210 during the vibration of the equipment operation.

[0028] In some preferred embodiments, the stepped hole 210 penetrates the plate 21 along the Y-axis direction, and its overall structure is composed of a circular hole segment and a long hole segment connected at the top and bottom. The circular hole segment at the top has a larger diameter, and the long hole segment at the bottom has a smaller diameter. The length of the long hole segment extends along the Z-axis to form a stepped through hole structure.

[0029] Accordingly, one end of the stepped pin 240 is fixedly connected to the back of the material box 24, and the other end extends radially outward to form an annular limiting step. The diameter of the step surface of this limiting step is smaller than the diameter of the circular hole section of the stepped hole 210, allowing the limiting step of the stepped pin 240 to pass smoothly through the circular hole section; at the same time, the diameter of the step surface of the limiting step is larger than the diameter of the elongated hole section of the stepped hole 210. When the stepped pin 240 slides downward along the Z-axis to the elongated hole section after being inserted from the circular hole section, the step surface of the limiting step will form a tight abutment with the stepped surface of the stepped hole 210, thereby restricting the stepped pin 240 from detaching from the plate 21 along the Y-axis direction through a mechanical structure. Combined with the guiding effect of the elongated hole section on the main body of the stepped pin 240, reliable axial limiting and sliding guidance of the material box 24 on the plate 21 are achieved.

[0030] In some preferred embodiments, the limiting component 26 includes a first housing 261, an elastic member 263, a second housing 264, and a pin 265. The top of the first housing 261 is provided with a connecting hole 2611 that extends radially through it. The connecting hole 2611 is rotatably connected to the top of the first groove 211 via a connecting pin 27. The first housing 261 and the second housing 264 are detachably connected to form a hollow housing. The pin 265 and the elastic member 263 are housed within the housing, and the end of the pin 265 extends to the outside through the end of the second housing 264 under the elastic force of the elastic member 263. Under the action of force, the end of the pin 265 moves back and forth in and out of the receiving hole 2640, thereby realizing the elastic extension and retraction function of the free end of the limiting component 26 to meet the abutment requirements of the top of the material box 24.

[0031] In some preferred embodiments, the pin head 265 includes a short shaft 2651, a limiting boss 2652, and a limiting portion 2653. The short shaft 2651 and the limiting portion 2653 are respectively coaxially disposed at both ends of the limiting boss 2652. The limiting boss 2652 protrudes outward along the radial direction of the pin head 265, and its outer diameter is adapted to the inner diameter of the receiving hole 2640 and is larger than the diameter of the end outlet of the receiving hole 2640, forming a radial limiting structure.

[0032] In some preferred embodiments, in order to make the axial length of the limiting component 26 adjustable and increase its adaptability, the first housing 261 is provided with a first internal threaded hole 2610 extending along its axial direction, the second housing 264 is provided with a first external thread 2641 adapted to the first internal threaded hole 2610, and is provided with an axially penetrating receiving hole 2640 inside to accommodate the elastic component 263 and the pin head 265, so as to form an elastic telescopic structure.

[0033] During assembly, the elastic component 263 and the pin 265 are sequentially inserted into the receiving hole 2640. The elastic component 263 and the pin 265 are housed within the receiving hole 2640, with one end of the pin 265 abutting against the elastic component 263 and the other end confined to the end of the receiving hole 2640. The elastic component 263 is compressed between the top of the first internal threaded hole 2610 and the pin 265. Under the restoring force of the elastic component 263, the end of the pin 265 can extend out from the end of the receiving hole 2640. When the end of the pin 265 is subjected to axial pressure, it can overcome the elastic force of the elastic component 263 and contract axially inward along the receiving hole 2640.

[0034] In some preferred embodiments, such as Figure 3 , Figure 4As shown, the limiting component 26 also includes a threaded pin 262. The top outer surface of the threaded pin 262 is provided with a second external thread 2621, and the lower part is integrally connected with a thin shaft 2622 extending along its axial direction. Correspondingly, the upper part of the receiving hole 2640 is provided with a second internal thread extending along its axial direction. The threaded pin 262 is received in the threaded hole 2640 and threadedly connected to the receiving hole 2640. The thin shaft 2622 is positioned towards the pin head 265. The elastic member 263 is connected to the outside of the thin shaft 2622 and the top of the pin head 265 to realize the adjustable compression of the elastic member 263, ensuring that the clamping force on the top of the material box 24 is always kept within a reasonable range.

[0035] During assembly, the two ends of the elastic component 263 are connected to the thin shaft 2622 and the short shaft 2651 respectively. This allows the axial position of the threaded pin 262 within the receiving hole 2640 to be adjusted by rotating the threaded pin 262, thereby changing the pre-compression of the elastic component 263. This is used to precisely control the extension length and elastic extension force of the pin head 265, so that the limiting component 26 can adapt to the material box 24 of different height specifications. This ensures that the clamping force on the top of the material box 24 is always kept within a reasonable range, avoiding both excessive looseness leading to limiting failure and excessive tightness causing deformation or wear of the material box 24.

[0036] In some preferred embodiments, such as Figure 5 , Figure 6 As shown, the back of the material box 24 is connected to a limiting block 241. The top of the limiting block 241 is provided with a limiting insertion hole 2410 extending in the Z direction and a sliding groove 2411 extending in the X direction. One end of the sliding groove 2411 is connected to the limiting insertion hole 2410 and smoothly transitions, while the other end extends in the same direction along the opening side of the first groove 211 to the side edge of the limiting block 241, so that the extension path of the sliding groove 2411 is adapted to the movement trajectory of the limiting component 26 when it rotates.

[0037] When the material box 24 needs to be locked and limited in the Z-axis direction, the limiting component 26 rotates with its hinge end with the first groove 211 as the fulcrum. The pin head 265 at its free end first slides along the slide groove 2411 to the bottom entrance of the limiting insertion hole 2410. Then, under the action of the reset elastic force of the elastic component 263, the pin head 265 extends downward and is engaged in the limiting insertion hole 2410. Through the axial cooperation between the pin head 265 and the limiting insertion hole 2410, the material box 24 is accurately locked in the Z-axis direction to prevent it from slipping upward. When the material box 24 needs to be disassembled, axial pressure is applied to the pin 265 through the smooth transition surface of the limiting hole 2410 and the slide groove 2411, so that it overcomes the elastic force of the elastic component 263, exits from the limiting hole 2410 and falls back into the slide groove 2411. Then, with the hinge end of the limiting component 26 as the fulcrum, its free end is rotated outward from the opening side of the first groove 211 until the pin 265 is completely disengaged from the slide groove 2411. At this time, the Z-axis direction limitation of the material box 24 is released, and it can slide upward along the stepped hole 210 and be removed, realizing quick disassembly.

[0038] In some preferred embodiments, one of the stepped holes 210 is located at the bottom of the first groove 211, and a limiting groove 213 is formed at the bottom of the first groove 211. The limiting groove 213 is adapted to the limiting block 241, and the limiting block 241 is located at the top of the stepped pin 240. When the material box 24 is installed onto the plate 21 through the cooperation of the stepped pin 240 and the stepped hole 210, the limiting block 241 will be simultaneously embedded into the limiting groove 213 at the bottom of the first groove 211. The side wall of the limiting groove 213 restricts the lateral displacement of the limiting block 241, further improving the structural stability of the material box 24 after it is assembled with the plate 21, preventing the material box 24 from shifting along the X-axis during equipment operation, and providing a positioning reference for the precise cooperation between the limiting component 26 and the limiting block 241.

[0039] In some preferred embodiments, the top of the material box 24 is provided with a clamp 22 and a needle shank limiting part 25. The needle shank limiting part 25 is disposed between the clamp 22 and the material box 24. One end of the clamp 22 is rotatably engaged with the plate 21, and the other end is limited by a wedge-shaped limiting member 23, so that the free end of the clamp 22 can be tightly pressed against the surface of the plate 21.

[0040] In some preferred embodiments, the top of the material box 24 is open, and the sides gradually taper from the top opening to the bottom, so that the cross-sectional dimensions of the box gradually decrease along the height direction (Z-axis direction), which can form a lateral limit for the accessories placed in the material box 24, so that the items naturally gather to the bottom and are easy to retrieve laterally.

[0041] The specific embodiments of this application have been described in detail above. For those skilled in the art, several improvements and modifications can be made to this application without departing from the principle of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A carrier plate assembly with a disassembly and assembly limiting structure, comprising a plate body (21) and a material box (24), characterized in that: The lower part of the plate (21) is provided with a plurality of stepped holes (210), which extend along the Z-axis. The back of the material box (24) is provided with a plurality of stepped pins (240). The material box (24) is inserted into the top of the stepped hole (210) through the stepped pins (240) and slides in the stepped hole (210) until it is limited to the bottom. The plate (21) has a first groove (211) extending along the Z-axis. The first groove (211) is located above the stepped hole (210). One side of the first groove (211) is open. Along the Z-axis, one end of the first groove (211) is rotatably connected to one end of the limiting component (26). The other end of the limiting component (26) is provided with an elastic telescopic structure with an axial displacement extension. The free end of the limiting component (26) rotates into the groove through the opening side of the first groove (211) and abuts against the top end face of the material box (24) through the elastic telescopic structure.

2. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 1, characterized in that: The stepped hole (210) is provided through the plate (21) along the Y-axis direction. The stepped hole (210) is composed of a circular hole section and a long hole section connected vertically. The diameter of the upper circular hole section is larger than the diameter of the lower long hole section.

3. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 2, characterized in that: One end of the step pin (240) is fixedly connected to the back of the material box (24), and the other end extends outward along its radial direction to form a limiting step. The diameter of the step surface of the limiting step is smaller than the diameter of the circular hole section of the stepped hole (210) and larger than the diameter of the long hole section of the stepped hole (210).

4. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 1, characterized in that: The limiting component (26) includes a first housing (261), an elastic component (263), a second housing (264), and a pin (265). The top of the first housing (261) is provided with a connecting hole (2611) that extends radially through it. The connecting hole (2611) is rotatably connected to the top of the first groove (211) through a connecting pin (27). The first housing (261) and the second housing (264) are detachably connected and are hollow housings. The pin (265) and the elastic member (263) are housed in the housing. The end of the pin (265) extends through the end of the second housing (264) to the outside under the elastic force of the elastic member (263). Under the action of force, the end of the pin (265) moves back and forth between the inside and outside of the end of the second housing (264).

5. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 4, characterized in that: The pin (265) includes a short shaft (2651), a limiting boss (2652), and a limiting part (2653). The short shaft (2651) and the limiting part (2653) are respectively coaxially disposed at both ends of the limiting boss (2652). The limiting boss (2652) protrudes outward along the radial direction of the pin (265). The outer diameter of the limiting boss (2652) is adapted to the cavity of the second housing (264) and is larger than the diameter of the end outlet of the second housing (264).

6. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 5, characterized in that: The first housing (261) has a first internal threaded hole (2610) extending along its axial direction inside, and the second housing (264) has a first external thread (2641) adapted to the first internal threaded hole (2610) on the outside, and an axially penetrating receiving hole (2640) inside. The elastic member (263) and the pin (265) are housed in the receiving hole (2640), with one end of the pin (265) abutting against the elastic member (263) and the other end limited to the end of the receiving hole (2640).

7. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 6, characterized in that: The limiting component (26) also includes a threaded pin (262), the top outer surface of which is provided with a second external thread (2621), and the upper part of the receiving hole (2640) is provided with a second internal thread extending along its axial direction. The threaded pin (262) is received in the receiving hole (2640), and the threaded connection position with the receiving hole (2640) is adjustable along its axial direction.

8. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 7, characterized in that: The lower part of the threaded pin (262) is integrally connected to a thin shaft (2622) extending along its axial direction, the thin shaft (2622) being disposed toward the pin head (265), and the elastic member (263) being sleeved on the outside of the thin shaft (2622) and the short shaft (2651).

9. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 1, characterized in that: The back of the material box (24) is connected to a limiting block (241). The top of the limiting block (241) is provided with a limiting insertion hole (2410) extending in the Z direction and a sliding groove (2411) extending in the X direction. One end of the sliding groove (2411) is connected to the limiting insertion hole (2410) and smoothly transitions. The other end extends in the same direction along the opening side of the first groove (211) to the side edge of the limiting block (241).

10. The bearing plate assembly with a disassembly and assembly limiting structure according to claim 9, characterized in that: One of the stepped holes (210) is located at the bottom of the first groove (211), and a limiting groove (213) is provided at the bottom of the first groove (211). The limiting groove (213) is adapted to the limiting block (241), and the limiting block (241) is located at the top of the stepped pin (240).

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