Lead block moving storage device

Abstract

The utility model belongs to lead block storage technical field, the utility model discloses a kind of lead block mobile storage device, it includes cabinet, travelling wheel and reinforcing structure, cabinet is divided into storage area and waste area, multiple support plates and multiple partition plates are provided in storage area to divide storage area into multiple size specifications of placement cavity, and placement cavity is used to place lead block. The placement cavity of each size specification is used to place the lead block of one size specification, the quick discernment and efficient management of lead block are realized, and the work efficiency is improved, the lead block in each placement cavity cannot be stacked together, and the phenomenon that lead block is prone to deformation under heavy pressure and then interferes with target area dose accuracy occurs is avoided. The lower surface of support plate has reinforcing structure, can better store lead block, avoid the phenomenon that lead block falls, the whole lead block mobile storage device can be realized walking by travelling wheel, facilitate use while can avoid the accident caused when artificial carrying lead block occurs.

Description

Technical Field

[0001] This utility model relates to the technical field of lead block storage equipment, and in particular to a lead block mobile storage device. Background Technology

[0002] In the field of radiotherapy, particularly for the treatment of breast cancer, supplemental irradiation of keloids, and superficial tumors, electron beams are commonly used. To precisely protect the normal tissue surrounding the target area, lead shields (usually made of lead alloy) must be used clinically to accurately shield non-treatment areas. The core function of the lead shield is to ensure that the radiation dose is precisely delivered to the target area; its thickness and geometry directly affect the patient's dosimetric requirements and treatment outcome.

[0003] In current clinical practice, the storage and management of lead barriers presents multiple technical challenges and safety hazards, the specific issues of which are as follows:

[0004] First, storage environment and safety risks: The core material of lead barriers is lead alloy, which is toxic and needs to be stored in a fixed container to avoid occupational health risks to operators. In addition, lead barriers have extremely high density, with a single large lead barrier weighing several kilograms, and the material is relatively brittle. Care must be taken during handling, and there is a risk that accidental collisions could cause lead barriers to fall and injure patients.

[0005] Second, there are issues with measurement accuracy and deformation control. Due to the high density of lead blocks, if they are stacked haphazardly or placed vertically, they are prone to deformation under long-term heavy pressure, such as central depression or edge warping. Once deformation occurs, the thickness of the lead blocks will become uneven, affecting their shielding effect against radiation and thus interfering with the accuracy of target area dosage.

[0006] Third, there are efficiency and management issues: The lead blocks used in radiotherapy equipment come in various sizes (e.g., 6cm×6cm, 10cm×10cm, 14cm×14cm, 20cm×20cm, 25cm×25cm, etc.), and there are both universal and patient-specific lead blocks. The current haphazard stacking method makes it time-consuming and laborious for radiotherapy technicians to find the target lead block, increasing the risk of errors and severely reducing work efficiency.

[0007] In conclusion, there is an urgent clinical need for a mobile, efficient, and safe storage device that can solve a series of problems related to lead blocks, such as deformation, toxicity, chaotic management, and wear and contamination. Utility Model Content

[0008] The purpose of this invention is to provide a movable storage device for lead blocks, which can effectively solve the problems of storage, deformation, contamination and management efficiency of lead blocks.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] This utility model discloses a mobile storage device for lead blocks, comprising: a cabinet, the cabinet being divided into a storage area and a disposal area, the storage area being located above the disposal area, the storage area being provided with multiple support plates and multiple partition plates to divide the storage area into placement cavities of various sizes, the placement cavities being used to place lead blocks; wheels, the wheels being located below the cabinet; and a reinforcing structure, the reinforcing structure being provided on the lower surface of the support plates.

[0011] In some embodiments, the support plate is inclined, and the support surface of the support plate for supporting the lead block is inclined downward in the rearward direction. The angle between the support surface and the horizontal plane is 10°-15°. A gap is provided at the bottom of the rear side wall of the placement cavity, and a collection box corresponding to the gap is provided on the rear side of the cabinet.

[0012] In some embodiments, the connection positions of the support plate and the side wall of the cabinet, the connection positions of the support plate and the partition plate, and the connection positions of the partition plate and the side wall of the cabinet are all provided with rounded corners.

[0013] In some specific embodiments, the radius of the fillet is greater than 5 mm.

[0014] In some embodiments, the front corners of both the support plate and the partition plate are chamfered, and the chamfer size is 0.5mm-1mm.

[0015] In some embodiments, the inner wall of the placement cavity, the front wall of the support plate, and the front wall of the partition plate are all provided with a hydrophobic and oleophobic coating.

[0016] In some embodiments, the reinforcing structure includes a plurality of crossbeams and a plurality of longitudinal beams, the plurality of crossbeams and the plurality of longitudinal beams forming a grid structure on the lower surface of the support plate.

[0017] In some specific embodiments, the reinforcing structure includes cables, with both ends of the cables fixed at two opposite corners of the grid structure.

[0018] In some more specific embodiments, anchors are provided at diagonal positions of the grid structure, the cables are fixed to the anchors, and the anchors are capable of applying preload toward the cables.

[0019] In some specific embodiments, the support plate and the partition plate are stainless steel plates, the crossbeam and the longitudinal beam are stainless steel beams, and the cable is a stainless steel cable.

[0020] The beneficial effects of this lead block mobile storage device are as follows: The storage area is divided into multiple support plates and partition plates into storage cavities of various sizes. Each cavity is used to hold a lead block of a specific size, enabling rapid identification and efficient management of the lead blocks, significantly improving the doctor's work efficiency. Furthermore, the lead blocks are not piled up in each cavity, preventing deformation under long-term heavy pressure, which could lead to uneven thickness, affecting the shielding effect against radiation and interfering with the accuracy of target area dosage. Simultaneously, the reinforced structure on the lower surface of the support plates effectively stores the lead blocks, preventing them from falling. The entire mobile storage device is mobile via wheels, facilitating use and preventing accidents caused by manual handling of the lead blocks.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the lead block movable storage device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the lead block moving storage device from another direction according to an embodiment of the present invention;

[0024] Figure 3 This is a partial structural schematic diagram of the lead block movable storage device according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the support plate and reinforcing structure according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the support plate and reinforcing structure in the direction of rain in an embodiment of this utility model.

[0027] Figure label:

[0028] 100. Cabinet; 110. Storage cavity; 111. Gap; 120. Waste area; 200. Support plate; 300. Divider plate; 400. Wheels; 500. Reinforcing structure; 510. Crossbeam; 520. Longitudinal beam; 530. Cable; 540. Anchor; 600. Collection box. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] This utility model discloses a lead block movable storage device, referenced Figures 1-2As shown, the lead block mobile storage device includes a cabinet 100, wheels 400, and a reinforcing structure 500. The cabinet 100 is divided into a storage area and a waste area 120. The storage area is located above the waste area 120. The storage area is provided with multiple support plates 200 and multiple partition plates 300 to divide the storage area into placement cavities 110 of various sizes. The placement cavities 110 are used to place lead blocks. The wheels 400 are located below the cabinet 100, and the reinforcing structure 500 is located on the lower surface of the support plates 200. Understandably, the storage area is divided into multiple support plates 200 and multiple partition plates 300, creating placement chambers 110 of various sizes. Each size chamber 110 is used to hold a specific size of lead block, enabling rapid identification and efficient management of the lead blocks. This significantly improves the doctor's work efficiency. Furthermore, within each placement chamber 110, the lead blocks are not piled together, preventing deformation under long-term pressure, which could lead to uneven thickness, affecting the shielding effect against radiation and interfering with the accuracy of the target dose. Simultaneously, the reinforced structure 500 on the lower surface of the support plate 200 effectively stores the lead blocks, preventing them from falling. The entire lead block mobile storage device is moved by wheels 400, facilitating use and preventing accidents caused by manual handling of the lead blocks.

[0033] Optionally, the abandoned area 120 is equipped with a door that can close off the abandoned area 120.

[0034] Optionally, the placement cavity 110 has five different sizes, arranged from top to bottom in order of size. Of course, in other embodiments of this utility model, the size of the placement cavity 110 can be adjusted according to actual needs.

[0035] Optionally, each support plate 200 is equipped with a label indicating the size of the lead block or patient information, enabling rapid identification and efficient management of the lead blocks and significantly improving the doctor's work efficiency.

[0036] Optionally, the support plate 200 is made of 3 mm thick high-strength stainless steel. Of course, other materials can also be selected according to actual needs.

[0037] In some embodiments, such as Figure 3As shown, the support plate 200 is inclined, and the support surface of the support plate 200 for supporting the lead block is inclined downward in the rearward direction. A gap 111 is provided at the bottom of the rear side wall of the placement cavity 110, and a collection box 600 corresponding to the gap 111 is provided on the rear side of the cabinet 100. It can be understood that the inclined setting of the support plate 200 utilizes gravity to generate sufficient force to stably support the lead block against the rear of the placement cavity 110, preventing it from accidentally sliding out when the lead block moving storage device moves or encounters bumps, thus ensuring storage safety. On the other hand, it can cooperate with the gap 111 at the rear of the placement cavity 110 to allow the trace amounts of lead ash and other pollutants generated during the process to naturally slide backward and eventually enter the collection box 600, avoiding the spread, accumulation, and secondary pollution of pollutants in the operating space. This is a systematic control solution for multiple pollutants.

[0038] Optionally, the angle between the support surface and the horizontal plane is 10°-15°. The angle can be 10°, 11°, 12°, 13°, 14°, or 15°, or other angles can be selected according to actual needs. An angle that is too small will compromise safety, while an angle that is too large will result in an excessively large lead block moving storage device. An angle of 10°-15° ensures safety while controlling the size of the lead block moving storage device, thus helping to control manufacturing costs.

[0039] Optionally, the connection points between the support plate 200 and the side wall of the cabinet 100, the connection points between the support plate 200 and the partition plate 300, and the connection points between the partition plate 300 and the side wall of the cabinet 100 are all rounded. It is understood that the lead block is made of a relatively soft and heavy material. If the corner of the placement cavity 110 is sharp, the lead block will make point or line contact when it is tilted in, resulting in a large force on the lead block and easily scratching its surface. In this embodiment, the connection points between the support plate 200 and the side wall of the cabinet 100, the connection points between the support plate 200 and the partition plate 300, and the connection points between the partition plate 300 and the side wall of the cabinet 100 are all rounded. This changes the contact between the lead block and the side wall of the placement cavity 110 from "point contact" to "surface contact" when the lead block is placed inside the cavity 110. The increased contact area and significantly reduced force allow the lead block to slide smoothly along the curved surface, minimizing scratches and wear.

[0040] Optionally, the radius of the rounded corner is greater than 5mm. Even with a smaller radius, the lead block may still get caught. In this embodiment, setting the radius of the rounded corner to be greater than 5mm allows the lead block to slide smoothly along the curved surface, minimizing scratches and wear.

[0041] Alternatively, the rounded surfaces can be finely electropolished to make them smooth and further reduce friction.

[0042] Optionally, both the support plate 200 and the partition plate 300 have chamfered corners at their front ends, with a chamfer size of 0.5mm-1mm. It is understood that the chamfered corners of both the support plate 200 and the partition plate 300 are achieved through CNC milling or laser cutting followed by secondary finishing. This precision chamfering eliminates the microscopic roughness and sharpness of the edges, preventing additional abrasive particles from being generated when the lead block and operating gloves come into contact.

[0043] Optionally, the inner wall of the placement cavity 110, the front wall of the support plate 200, and the front wall of the partition plate 300 are all provided with a hydrophobic and oleophobic coating. The hydrophobic and oleophobic coating is a nanoscale coating, which can be made of fluorosilane or polytetrafluoroethylene material and formed by chemical vapor deposition or sol-gel method. Understandably, the added hydrophobic and oleophobic coating has extremely low surface energy, equivalent to a solid lubricant, significantly reducing the coefficient of friction between contact surfaces, making the sliding process of the lead block smoother, and further reducing wear at the microscopic level. At the same time, its superhydrophobic and oleophobic properties make it difficult for various contaminants such as lead dust, glove debris, and oil stains to adhere, achieving a "self-cleaning" effect for the opening of the placement cavity 110. Further optionally, a hydrophobic and oleophobic coating thickness of 50 nanometers to 100 nanometers is the optimal balance range to ensure functionality and durability. Below 50 nanometers, a uniform and dense nanostructure may not be formed, and the hydrophobic performance is unstable; above 100 nanometers, the internal stress of the coating increases, reducing adhesion to the stainless steel substrate and making it easier to peel off under long-term friction.

[0044] It should be noted that during actual operation, when removing the lead block, it slides smoothly along the 5mm radius rounded corner. The hydrophobic and oleophobic coating, acting as a solid lubricant, significantly reduces friction, and the precise chamfering eliminates sharp edges. Together, they minimize scratches and wear during handling, thereby reducing the generation of wear particles such as lead dust.

[0045] refer to Figures 4-5 As shown, the reinforcing structure 500 includes multiple crossbeams 510 and multiple longitudinal beams 520, which form a grid structure on the lower surface of the support plate 200. It can be understood that by configuring the reinforcing structure 500 as a grid structure composed of multiple crossbeams 510 and multiple longitudinal beams 520, the deformation of the support plate 200 is controlled within a clinical tolerance range far below 0.5 mm when bearing heavy lead blocks, fundamentally solving the deformation problem of lead blocks during long-term storage and ensuring dosimetric accuracy.

[0046] Optionally, the crossbeams 510 and longitudinal beams 520 are made of stainless steel, with a 5mm spacing between adjacent crossbeams 510 and a 5mm spacing between adjacent longitudinal beams 520. It is understood that the stainless steel beams, combined with the 3mm thick stainless steel support plate 200, can control the deformation of the support plate 200 under maximum load within an allowable tolerance range far less than 0.5mm, thereby effectively preventing the lead block from tilting or deforming due to deformation of the support plate 200. Of course, in other embodiments of this invention, the dimensions and materials of the crossbeams 510 and longitudinal beams 520 can be adjusted according to actual needs.

[0047] Further optional, see reference Figures 4-5 As shown, the reinforcing structure 500 includes a cable 530, with both ends of the cable 530 fixed at two opposite corners of the grid structure. Understandably, in the busy daily workflow of a radiotherapy department, doctors frequently need to retrieve and place lead blocks of different sizes. Especially for the largest 25cm x 25cm heavy lead blocks, a single block can weigh several kilograms. Under pressure to achieve operational efficiency and speed, doctors often find it difficult to precisely align the center of gravity of the lead block with the geometric center of the storage compartment each time it is placed back. For example, due to the large size of the lead blocks, doctors may habitually insert one edge of the lead block first and then push it in, causing the center of gravity of the lead block to deviate from the center of the support plate 200 by several millimeters at the moment of placement or when it finally comes to rest. This slight eccentric placement causes the pressure distribution on the support plate 200 to become uneven, generating additional bending moments and concentrating the load on the eccentric side. If such eccentric loads are repeatedly applied to areas where the plate thickness is relatively thin and the welding strength is relatively weak, the local stress level will increase significantly, accelerating the fatigue process of the material. In this embodiment, a cable 530 is added to the grid structure. The cable 530 can actively generate an upward reverse bending moment on the support plate 200. This reverse bending moment can not only offset the downward deflection caused by the long-term heavy pressure and eccentric placement of the heavy lead block, but more importantly, it can actively compensate for the local stiffness loss caused by manufacturing defects such as the local thinness of the support plate 200 and insufficient welding fusion depth. In other words, the added cable 530 can enable the support plate 200 to maintain its high flatness when facing various complex factors such as the concentrated contact pressure caused by the micro-unevenness at the bottom of the lead block, and the instantaneous vibration and torsional load generated when the lead block moving storage device moves, ensuring that the local deflection is strictly controlled within the strict tolerance range.

[0048] Further options are available, see reference. Figures 4-5As shown, anchors 540 are positioned diagonally across the grid structure, and cables 530 are fixed to the anchors 540. The anchors 540 can apply preload towards the cables 530. It is understood that the anchors 540 can be connected to the crossbeams 510 or longitudinal beams 520 using custom-made U-bolts. The U-bolts are 6 mm in diameter, made of 316L stainless steel, and their ends pass through pre-drilled holes in the crossbeams 510 or longitudinal beams 520, and are secured with self-locking nuts and washers. The end of the cable 530 is formed into a loop by a pressed sleeve (e.g., an aluminum alloy or stainless steel sleeve), which is then fitted onto the bent portion of the U-bolt. This connection method ensures that the tension of the cable 530 is evenly transmitted to the nodes of the crossbeams 510 or longitudinal beams 520, avoiding stress concentration, and facilitating the installation and replacement of the cable 530.

[0049] Alternatively, an adjustable preload application mechanism, such as a threaded tensioner (like a turnbuckle) or a hydraulic tensioning device, can be provided at one or both ends of each cable 530. These mechanisms allow for precisely controlled tension to be applied to the cables 530 after installation. Specifically, the preload application mechanism can use an M6 316L stainless steel turnbuckle. One end of the turnbuckle is threaded to the annular end of the cable 530, and the other end is threaded to a fixing bolt anchored to the crossbeam 510 or longitudinal beam 520. By rotating the center of the turnbuckle, the effective length of the cable 530 can be precisely adjusted, thereby applying or releasing the preload. This mechanical tensioning mechanism is easy to operate, relatively inexpensive, and provides a stable preload. For scenarios requiring higher precision and automation, a miniature hydraulic tensioner can also be considered, which applies the preload by controlling the piston stroke with a hydraulic pump and integrating a pressure sensor for real-time feedback.

[0050] Optionally, a 316L stainless steel cable with a diameter of 3 mm can be used as the cable 530, which has a tensile strength of up to 1500 MPa. Of course, in other embodiments of this utility model, the cable 530 can also be made of other materials or have a different size, depending on actual needs.

[0051] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lead block movable storage device, characterized in that, include: The cabinet (100) is divided into a storage area and a waste area (120). The storage area is located above the waste area (120). The storage area is provided with multiple support plates (200) and multiple partition plates (300) to divide the storage area into placement cavities (110) of various sizes. The placement cavities (110) are used to place lead blocks. The wheels (400) are located below the cabinet (100); A reinforcing structure (500) is disposed on the lower surface of the support plate (200).

2. The lead block movable storage device according to claim 1, characterized in that, The support plate (200) is inclined, and the support surface of the support plate (200) for supporting the lead block is inclined downward in the rearward direction. The angle between the support surface and the horizontal plane is 10°-15°. A gap (111) is provided at the bottom of the rear side wall of the placement cavity (110). A collection box (600) corresponding to the gap (111) is provided on the rear side of the cabinet (100).

3. The lead block movable storage device according to claim 1, characterized in that, The connection points between the support plate (200) and the side wall of the cabinet (100), the connection points between the support plate (200) and the partition plate (300), and the connection points between the partition plate (300) and the side wall of the cabinet (100) are all provided with rounded corners.

4. The lead block movable storage device according to claim 3, characterized in that, The radius of the fillet is greater than 5mm.

5. The lead block movable storage device according to claim 1, characterized in that, Both the support plate (200) and the partition plate (300) have chamfers at their front corners, with the chamfer size being 0.5mm-1mm.

6. The lead block movable storage device according to claim 1, characterized in that, The inner wall of the placement cavity (110), the front wall of the support plate (200), and the front wall of the partition plate (300) are all provided with hydrophobic and oleophobic coatings.

7. The lead block moving storage device according to any one of claims 1-6, characterized in that, The reinforcing structure (500) includes a plurality of crossbeams (510) and a plurality of longitudinal beams (520), the plurality of crossbeams (510) and the plurality of longitudinal beams (520) forming a grid structure on the lower surface of the support plate (200).

8. The lead block movable storage device according to claim 7, characterized in that, The reinforcing structure (500) includes a cable (530), the two ends of which are fixed at two opposite corners of the grid structure.

9. The lead block movable storage device according to claim 8, characterized in that, Anchors (540) are provided at the diagonal positions of the grid structure, and the cable (530) is fixed to the anchors (540). The anchors (540) can apply preload to the cable (530).

10. The lead block movable storage device according to claim 8, characterized in that, The support plate (200) and the partition plate (300) are stainless steel plates, the crossbeam (510) and the longitudinal beam (520) are stainless steel beams, and the cable (530) is a stainless steel cable.

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