A plastic storage device

Abstract

The application discloses a plastic storage device, the top of the barrel is provided with a rotating cover plate for sealing, the bottom of the barrel is provided with an annular protrusion, the upper end surface of the rotating cover plate is provided with a limiting cavity, the limiting cavity is internally provided with a limiting assembly for limiting and preventing lateral sliding of the annular protrusion by the self weight of the barrel, the limiting assembly comprises a limiting block, a limiting ring and an anti-skid mechanism, the limiting block is embedded in the inner wall of the limiting cavity, the bottom of the limiting cavity is provided with a ring cavity for driving the limiting block to horizontally move, the limiting ring is slidingly connected in the inner portion of the ring cavity, the anti-skid mechanism is fixedly connected to the inner wall of the limiting ring, and the anti-skid mechanism protrudes from the surface of the limiting cavity, so that the application can effectively improve the safety hidden trouble of the large-weight storage device during carrying, and improve the simplicity and convenience of the device.

Description

Technical Field

[0001] This invention relates to the field of storage equipment technology, and in particular to a plastic storage device. Background Technology

[0002] Plastic drums are widely used for the storage and transportation of various liquids. They offer excellent packaging properties for special hazardous materials, being unbreakable, rust-free, and lightweight. They also exhibit excellent oil and strong corrosion resistance, making them ideal for packaging hazardous materials requiring insulation, moisture protection, pressure resistance, and corrosion resistance. Plastic drums are typically made from polyethylene, polypropylene, polyester, and other plastics through blow molding, injection molding, vacuum forming, and rotational molding processes. They are commonly used for containing liquids and solids in industries such as chemicals, pesticides, pharmaceuticals, food, hardware, electronics, and electromechanical products.

[0003] Chinese Patent Publication No. CN116280687B discloses a chemical drum that is easy to stack and structurally robust. It includes a drum body, a lid, and clamps. A first retaining ring protrudes from the outer periphery of the top of the drum body. The bottom surface of the lid has a groove around its perimeter that seals against the top edge of the drum opening. A second retaining ring extends outward from the lid's perimeter and seals against the first retaining ring. The clamp includes a first arc-shaped retaining ring and a second arc-shaped retaining ring. A locking handle is hinged to the other end of the first arc-shaped retaining ring, and a locking arm is hinged to the other end of the second arc-shaped retaining ring. The other end of the locking arm is hinged between the two ends of the locking handle. A locking structure for locking and fixing the locking handle is provided between the swing end of the locking handle and the first arc-shaped retaining ring. The first and second arc-shaped retaining rings are tightly fitted to the outside of the first and second retaining rings. This creates a multi-stage seal between the lid and the drum body. The locking structure effectively prevents the clamp from loosening, thus improving the sealing effect of the chemical drum assembly.

[0004] Existing storage devices often use protrusions and grooves for locking and limiting when stacked. However, this structure makes it easy to cause separation difficulties during handling or cause the cylinder to slip due to the small contact surface when tilted. This makes it inconvenient to use and poses certain safety hazards.

[0005] Therefore, it is necessary to provide a plastic storage device to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a plastic storage device to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a plastic storage device, comprising a cylindrical body, wherein a rotating cover plate for sealing is provided at the top of the cylindrical body, and an annular protrusion is provided at the bottom of the cylindrical body. A limiting cavity is formed on the upper end face of the rotating cover plate, and a limiting component is provided inside the limiting cavity to limit and prevent the annular protrusion from slipping due to the weight of the cylindrical body.

[0008] Furthermore, the diameter of the annular protrusion is smaller than that of the bottom of the cylinder, and the diameter of the limiting cavity is slightly larger than that of the annular protrusion.

[0009] As a further embodiment of the present invention, the limiting component includes a limiting block, a limiting ring, and an anti-slip mechanism. The limiting block is embedded in the inner wall of the limiting cavity. The bottom of the limiting cavity has an annular cavity for driving the limiting block to move horizontally. The limiting ring is slidably connected inside the annular cavity. The anti-slip mechanism is fixedly connected to the inner wall of the limiting ring and protrudes from the surface of the limiting cavity.

[0010] Furthermore, the anti-slip mechanism is provided in multiple sets, arranged in a ring inside the limiting cavity, and the width of the limiting ring is higher than the width of the annular protrusion.

[0011] As a further embodiment of the present invention, the inner wall of the limiting cavity is provided with an elastic cavity, the elastic cavity is connected to the annular cavity through a second connecting pipe, and the limiting block is elastically connected inside the elastic cavity.

[0012] Furthermore, a sealed cavity is formed between the limiting ring and the annular cavity, one end of the second connecting pipe is connected to the side wall of the annular cavity, and the end of the second connecting pipe away from the annular cavity is connected to the bottom of the elastic cavity away from the limiting block. The space between the limiting ring and the annular cavity is filled with hydraulic medium.

[0013] As a further embodiment of the present invention, the bottom of the outer end face of the annular protrusion is provided with a sloping protrusion, and the side of the limiting block that is in contact with the annular protrusion is provided with a notch that is adapted to the rotating groove.

[0014] As a further embodiment of the present invention, the limiting ring includes a fixed ring and a rotating ring. The fixed ring is fixedly connected to the anti-slip mechanism and is slidably connected inside the ring cavity. The rotating ring is rotatably connected to the fixed ring via a spiral spring. An adjusting ring for controlling the extension of the anti-slip mechanism is fixedly connected to the outer extension of the fixed ring.

[0015] Furthermore, the surface of the rotating ring is provided with anti-slip protrusions, which can be multiple sets of longitudinal grids, thereby increasing the friction between the annular protrusions and the rotating ring.

[0016] As a further embodiment of the present invention, a first connecting pipe is provided at the bottom of the annular cavity. One end of the first connecting pipe is connected to the lower part of the anti-slip mechanism, and the end of the first connecting pipe opposite to the anti-slip mechanism is connected to the lower part of the rotating ring. The rotating ring is provided with a staggered guide groove inside. When the rotating ring rotates to the point where the limit on the anti-slip mechanism is released, the two ends of the guide groove are connected to the second connecting pipe and the first connecting pipe respectively, and the limit block is correspondingly provided with the anti-slip mechanism.

[0017] Furthermore, the bottom of the anti-slip mechanism is provided with a sealing gasket, and the interior of the anti-slip mechanism is hollow.

[0018] As a further embodiment of the present invention, the anti-slip mechanism includes a positioning post and a telescopic sleeve. The positioning post is fixedly connected to a fixed ring, and the telescopic sleeve is slidably sleeved inside the positioning post. The side end faces of the positioning post and the telescopic sleeve are provided with rotation grooves that are adapted to the adjusting ring, and the inner wall of the adjusting ring is provided with an arc-shaped groove that is adapted to the outer end face of the telescopic sleeve.

[0019] Furthermore, the telescopic sleeve can be provided with multiple sets of interlocking sleeves, and the telescopic sleeve and the spiral spring, as well as the telescopic sleeve, are limited by the limiting groove and the limiting slider to prevent them from rotating. The telescopic sleeve has a communicating cavity inside, and the middle part of the telescopic sleeve is elastically connected to the bottom of the annular cavity through an elastic element.

[0020] When using this invention, after the cylinder is closed by rotating the cover plate, an annular protrusion is provided for easy handling. At the same time, a limiting cavity is provided to improve the stability of stacking. The annular protrusion can be placed inside the limiting cavity, so that the storage devices can be stacked on top of each other, thereby facilitating the transportation and storage of the devices. A limiting component is provided inside the limiting cavity. The limiting component limits the annular protrusion by the weight of the cylinder, thereby improving the stability of stacking. The limiting component can also be used to prevent the side slip caused by the tilting of the rotating cover plate during handling, thereby improving the safety of the device. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is an overall schematic diagram of the present invention;

[0023] Figure 2 This is the invention Figure 1 Enlarged structural diagram at point A in the middle;

[0024] Figure 3 This is a schematic cross-sectional view of the rotating cover plate of the present invention;

[0025] Figure 4 This is a schematic diagram of the limiting ring structure of the present invention;

[0026] Figure 5 This is a schematic cross-sectional view of the rotating cover plate of the present invention;

[0027] Figure 6 This is the invention Figure 5 Enlarged structural diagram at point B;

[0028] Figure 7 This is a schematic diagram of the structure of the present invention in its stacked state;

[0029] Figure 8 This is the invention Figure 7 Enlarged structural diagram at point C;

[0030] Figure 9 This is a schematic diagram of the telescopic sleeve structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the internal structure of the telescopic sleeve of the present invention;

[0032] Figure 11 This is a structural diagram of the present invention in its transport state;

[0033] Figure 12 This is the invention Figure 11 Enlarged structural diagram at point D.

[0034] In the diagram: 1. Rotating cover plate; 2. Limiting component; 3. Limiting cavity; 4. Cylinder; 5. Annular protrusion; 6. Limiting block; 7. Limiting ring; 8. Anti-slip mechanism; 9. Circular cavity; 10. First connecting pipe; 11. Second connecting pipe; 12. Elastic cavity; 13. Adjusting ring; 14. Fixing ring; 15. Arc-shaped groove; 16. Rotating ring; 17. Telescopic sleeve; 18. Vortex spring; 19. Anti-slip protrusion; 20. Sealing gasket; 21. Positioning post; 22. Sloping protrusion; 23. Rotating groove; 24. Connecting cavity; 25. Limiting slide groove. Detailed Implementation Example 1

[0035] like Figure 1 As shown, a plastic storage device includes a cylinder 4, a rotating cover plate 1 for sealing is provided at the top of the cylinder 4, an annular protrusion 5 is provided at the bottom of the cylinder 4, a limiting cavity 3 is provided on the upper end face of the rotating cover plate 1, and a limiting component 2 is provided inside the limiting cavity 3 to limit and prevent the annular protrusion 5 from slipping due to the weight of the cylinder 4.

[0036] Furthermore, the diameter of the annular protrusion 5 is smaller than the bottom of the cylinder 4, and the diameter of the limiting cavity 3 is slightly larger than the annular protrusion 5.

[0037] In use, after closing the cylinder 4 by rotating the cover plate 1, an annular protrusion 5 is provided for easy handling. At the same time, a limiting cavity 3 is provided to improve the stability of stacking. The annular protrusion 5 can be placed inside the limiting cavity 3, so that the storage devices can be stacked to each other, thereby facilitating the transportation and storage of the devices. A limiting component 2 is provided inside the limiting cavity 3. The limiting component 2 limits the annular protrusion 5 by the weight of the cylinder 4, thereby improving the stability of stacking. The limiting component 2 can also be used to prevent the rotating cover plate 1 from tilting during handling, thus improving the safety of the device. Example 2

[0038] Based on Example 1, such as Figure 1-2 As shown, the limiting component 2 includes a limiting block 6, a limiting ring 7, and an anti-slip mechanism 8. The limiting block 6 is embedded in the inner wall of the limiting cavity 3. The bottom of the limiting cavity 3 has an annular cavity 9 for driving the limiting block 6 to move horizontally. The limiting ring 7 is slidably connected inside the annular cavity 9. The anti-slip mechanism 8 is fixedly connected to the inner wall of the limiting ring 7 and protrudes from the surface of the limiting cavity 3.

[0039] Furthermore, the anti-slip mechanism 8 is provided in multiple sets, arranged in a ring inside the limiting cavity 3, and the width of the limiting ring 7 is higher than the width of the annular protrusion 5.

[0040] When the storage devices are stacked on top of each other, the annular protrusion 5 will press against the limiting ring 7, causing the limiting ring 7 to move downward inside the annular cavity 9. After moving downward, the annular protrusion 5 will fall into the annular cavity 9 for initial positioning. During stacking, the anti-slip mechanism 8 can be distributed in a ring on the surface of the limiting cavity 3, which can facilitate the guidance of the position of the annular protrusion 5 during stacking and improve the ease of use of the storage device. At the same time as the limiting ring 7 moves downward, it will also drive the limiting block 6 to extend horizontally from the inner wall of the limiting cavity 3. The limiting block 6 has multiple sets symmetrically arranged on the inner wall of the limiting cavity 3. By fixing and limiting the annular protrusion 5 inside the annular cavity 9 through the sets of symmetrically extended limiting blocks 6, the annular protrusion 5 is prevented from tilting or moving inside the annular cavity 9.

[0041] like Figure 1-3 and Figure 7-8 As shown, the inner wall of the limiting cavity 3 is provided with an elastic cavity 12. The elastic cavity 12 is connected to the annular cavity 9 through the second connecting pipe 11. The limiting block 6 is elastically connected inside the elastic cavity 12.

[0042] Furthermore, a sealed cavity is formed between the limiting ring 7 and the annular cavity 9. One end of the second connecting pipe 11 is connected to the side wall of the annular cavity 9, and the end of the second connecting pipe 11 away from the annular cavity 9 is connected to the bottom of the elastic cavity 12 away from the side of the limiting block 6. Hydraulic medium is filled between the limiting ring 7 and the annular cavity 9.

[0043] During use, when stacking, the upper annular protrusion 5 presses against the limiting ring 7 under the action of gravity. The limiting ring 7 slides inside the annular cavity 9, thereby pressing the medium inside the annular cavity 9 into the elastic cavity 12 through the second connecting pipe 11. This pushes the limiting block 6 to extend horizontally, thereby limiting the annular protrusion 5 through the limiting block 6. The pressing ratio of the limiting ring 7 will be much greater than that of the limiting block 6, thus generating a large horizontal pressure on the limiting block 6 to push it to limit the annular protrusion 5, preventing the upper cylinder 4 from tilting or detaching, which would cause stacking instability.

[0044] like Figure 1-3 and Figure 7-8As shown, the bottom of the outer end face of the annular protrusion 5 is provided with a sloping protrusion 22, and the side of the limiting block 6 that is in contact with the annular protrusion 5 is provided with a notch that is compatible with the rotating groove 23.

[0045] In use, by providing a sloping protrusion 22 on the side end face of the annular protrusion 5, when the limiting block 6 extends to limit the annular protrusion 5, the groove of the sloping protrusion 22 and the limiting block 6 can effectively prevent the annular protrusion 5 from coming out in the vertical direction. Moreover, the elastic cavity 12 is connected to the annular cavity 9, so that the abutment between each set of limiting blocks 6 is the same, so that the two sets of cylinders 4 can automatically be coaxial under the push of the limiting block 6, thereby improving the stability of the stacked cylinders 4.

[0046] like Figure 1-6 As shown, the limiting ring 7 includes a fixed ring 14 and a rotating ring 16. The fixed ring 14 is fixedly connected to the anti-slip mechanism 8 and is slidably connected inside the ring cavity 9. The rotating ring 16 is rotatably connected to the fixed ring 14 through a spiral spring 18. An adjusting ring 13 for controlling the extension of the anti-slip mechanism 8 is fixedly connected to the outer extension of the fixed ring 14.

[0047] Furthermore, the surface of the rotating ring 16 is provided with anti-slip protrusions 19, which can be multiple sets of longitudinal grids, thereby increasing the friction between the annular protrusion 5 and the rotating ring 16.

[0048] When stacking cylinders 4, and then moving them, the upper cylinder 4 is usually tilted at a certain angle to facilitate handling and unloading by workers. However, in conventional designs, the contact surface between the annular protrusion 5 and the limiting cavity 3 is reduced after tilting, resulting in insufficient friction and making it easy for the cylinder 4 to slip, causing safety accidents such as goods falling off. If a slot is used to fix the annular protrusion 5, the slot is too shallow and the fixing and limiting effect is not good; if the slot is too deep, the annular protrusion 5 is difficult to detach and inconvenient to use. Therefore, this invention provides an annular cavity 9, which is shallow and has a much larger surface area than the annular protrusion 5. This improves the convenience of stacking. At the same time, it is fixed by the limiting block 6 and the anti-slip mechanism 8. When the cylinder 4 needs to be moved, the upper cylinder 4 is rotated, which causes the annular protrusion 5 to drive the rotating ring 16 to rotate. Through the adjusting ring 13 on the inner wall of the rotating ring 16, the anti-slip mechanism 8 extends out of the surface of the limiting cavity 3. Thus, when the cylinder 4 is tilted, the anti-slip mechanism 8 can effectively limit and stop the cylinder 4, thereby preventing the cylinder 4 from slipping.

[0049] like Figure 1-12As shown, the bottom of the annular cavity 9 is provided with a first connecting pipe 10. One end of the first connecting pipe 10 is connected to the lower part of the anti-slip mechanism 8, and the other end of the first connecting pipe 10 away from the anti-slip mechanism 8 is connected to the lower part of the rotating ring 16. The rotating ring 16 is provided with a staggered guide groove inside. When the rotating ring 16 rotates to the point where the limit on the anti-slip mechanism 8 is released, the two ends of the guide groove are connected to the second connecting pipe 11 and the first connecting pipe 10 respectively, and the limit block 6 is correspondingly set with the anti-slip mechanism 8.

[0050] Furthermore, the bottom of the anti-slip mechanism 8 is provided with a sealing gasket 20, and the interior of the anti-slip mechanism 8 is hollow.

[0051] In use, when the rotating ring 16 contacts the anti-slip mechanism 8 under the drive of the annular protrusion 5, the second connecting pipe 11 will connect with the first connecting pipe 10 through the guide groove. This allows the pressure in the elastic cavity 12 to enter the bottom of the anti-slip mechanism 8 through the first connecting pipe 10 and the second connecting pipe 11, reducing the pressure in the elastic cavity 12. The limiting block 6 then contacts the limiting effect of the annular protrusion 5. At this time, the cylinder 4 can drive the annular protrusion 5 to move and tilt. When tilting, it will inevitably press the limiting block 6 on the tilted side, causing the liquid in the elastic cavity 12 to flow further to the anti-slip mechanism 8. The liquid pressure inside the anti-slip mechanism 8 is used to drive the extension of the anti-slip mechanism 8, so that when the cylinder 4 is tilted, the bottom of the tilted side has the corresponding anti-slip mechanism 8 extending out. After the anti-slip mechanism 8 extends out, it is used to prevent the cylinder 4 from sliding sideways after tilting.

[0052] like Figure 1-12 As shown, the anti-slip mechanism 8 includes a positioning post 21 and a telescopic sleeve 17. The positioning post 21 is fixedly connected to the fixed ring 14. The telescopic sleeve 17 is slidably sleeved inside the positioning post 21. The side end faces of the positioning post 21 and the telescopic sleeve 17 are provided with rotating grooves 23 that are adapted to the adjusting ring 13. The inner wall of the adjusting ring 13 is provided with an arc-shaped groove 15 that is adapted to the outer end face of the telescopic sleeve 17.

[0053] Furthermore, the telescopic sleeve 17 may be provided with multiple sets of interconnected sleeves, and the telescopic sleeve 17 and the spiral spring 18, as well as the telescopic sleeve 17, are limited by the limiting slide groove 25 and the limiting slider to prevent them from rotating. The telescopic sleeve 17 is provided with a connecting cavity 24 inside, and the middle part of the telescopic sleeve 17 is elastically connected to the bottom of the annular cavity 9 through an elastic element.

[0054] In use, in the initial state, i.e., when the rotating ring 16 is not rotating, the adjusting ring 13 rotates into the interior of the rotating groove 23, and the positioning post 21 is fixedly connected to the fixing ring 14, thereby fixing the telescopic sleeve 17 inside the positioning post 21. When the adjusting ring 13 rotates until the arc-shaped groove 15 is in contact with the outer end face of the telescopic sleeve 17, the first connecting pipe 10 and the second connecting pipe 11 are connected, and the medium enters the interior of the connecting cavity 24 through the elastic cavity 12. A sealing gasket 20 is also provided at the bottom of the positioning post 21 to improve the airtightness of the connecting cavity 24. Under the pressure of the medium inside the connecting cavity 24, the telescopic sleeve 17 is driven from the positioning post 21. The internal extension is used to limit the cylinder 4 to prevent it from slipping. When the telescopic sleeve 17 is extended, the rotating groove 23 fits against the inner wall of the telescopic sleeve 17 or the inner wall of the anti-slip mechanism 8 to prevent the medium from leaking out. When the upper cylinder 4 is moved away, under the elastic force of the elastic element inside the telescopic sleeve 17 and the elastic cavity 12, the medium inside the connecting cavity 24 and the elastic cavity 12 flows back into the annular cavity 9, so that the limiting ring 7 returns to being flush with the surface of the limiting cavity 3. When the telescopic sleeve 17 is retracted into the positioning post 21, the rotating groove 23 is aligned with each other. At this time, the adjusting ring 13 can reverse under the action of the spiral spring 18 and limit the telescopic sleeve 17.

[0055] Working principle: After the cylinder 4 is closed by rotating the cover plate 1, an annular protrusion 5 is provided for easy handling. A limiting cavity 3 is also provided to improve stacking stability. The annular protrusion 5 can be placed inside the limiting cavity 3, allowing storage devices to be stacked together, thus facilitating transportation and storage. A limiting component 2 is provided inside the limiting cavity 3. The limiting component 2 uses the weight of the cylinder 4 to limit the annular protrusion 5, thereby improving stacking stability. The limiting component 2 also prevents the rotating cover plate 1 from tilting during handling, thus improving device safety. When the storage devices are stacked vertically, the annular protrusion 5 presses against the limiting ring 7, causing the limiting ring 7 to move downwards inside the annular cavity 9. After moving downwards, the annular protrusion 5 will fall... The annular protrusion 5 is initially positioned within the annular cavity 9. During stacking, the anti-slip mechanism 8 is arranged in a ring on the surface of the limiting cavity 3, facilitating the guidance of the position of the annular protrusion 5 during stacking and improving the ease of use of the storage device. Simultaneously, as the limiting ring 7 moves downward, it drives the limiting block 6 to extend horizontally from the inner wall of the limiting cavity 3. Multiple sets of symmetrically arranged limiting blocks 6 are positioned on the inner wall of the limiting cavity 3. These symmetrically extended limiting blocks 6 fix the annular protrusion 5 within the annular cavity 9, preventing it from tilting or moving within the cavity. During stacking, the upper annular protrusion 5 presses against the limiting ring 7 under gravity, causing the limiting ring 7 to slide within the annular cavity 9. This forces the medium inside the annular cavity 9 to be pushed into the elastic cavity 12 through the second connecting pipe 11. The internal structure of the limiting ring 7 pushes the horizontal extension of the limiting block 6, thereby limiting the annular protrusion 5. The pressing ratio of the limiting ring 7 is much greater than that of the limiting block 6, thus generating a large horizontal pressure on the limiting block 6 to push it to limit the annular protrusion 5, preventing the upper cylinder 4 from tilting or detaching, which would cause stacking instability. By providing a sloping protrusion 22 on the side end face of the annular protrusion 5, when the limiting block 6 extends to limit the annular protrusion 5, the groove between the sloping protrusion 22 and the limiting block 6 can effectively prevent the annular protrusion 5 from coming off vertically. Moreover, the elastic cavity 12 is connected to the annular cavity 9, so that the abutment between each set of limiting blocks 6 is the same, allowing the two sets of cylinders 4 to automatically align under the push of the limiting block 6. The shaft improves the stability of stacked cylinders 4. When cylinders 4 are stacked and need to be moved, the upper cylinder 4 is usually tilted at a certain angle to facilitate handling and unloading. However, in conventional designs, after the cylinder 4 is tilted, the contact surface between the annular protrusion 5 and the limiting cavity 3 is reduced, resulting in insufficient friction and making the cylinder 4 prone to slippage, which can lead to accidents such as goods falling off. If a groove is used to fix the annular protrusion 5, the groove is too shallow and the fixing and limiting effect is not good. If the groove is too deep, the annular protrusion 5 is difficult to detach and inconvenient to use. Therefore, this invention provides an annular cavity 9. The annular cavity 9 is shallow and has a surface area much larger than the annular protrusion 5, which improves the convenience of stacking. At the same time, it is fixed by the limiting block 6 and the anti-slip mechanism 8. When the cylinder 4 needs to be moved, the upper cylinder 4 is rotated.This causes the annular protrusion 5 to drive the rotating ring 16 to rotate. Through the adjusting ring 13 on the inner wall of the rotating ring 16, the anti-slip mechanism 8 extends out of the limiting cavity 3. Therefore, when the cylinder 4 is tilted, the anti-slip mechanism 8 can effectively limit and resist the cylinder 4, thus preventing lateral slippage. When the rotating ring 16, driven by the annular protrusion 5, contacts and limits the anti-slip mechanism 8, the second connecting pipe 11 will connect to the first connecting pipe 10 through the guide groove. This allows the pressure inside the elastic cavity 12 to enter the bottom of the anti-slip mechanism 8 through the first connecting pipe 10 and the second connecting pipe 11, thus allowing the elastic cavity 12 to... The pressure inside cavity 12 decreases, and the limiting block 6 contacts the restricting effect of the annular protrusion 5. At this time, the cylinder 4 can drive the annular protrusion 5 to move and tilt. When tilting, it will inevitably press the limiting block 6 on the tilted side, causing the liquid in the elastic cavity 12 to flow further to the anti-slip mechanism 8. The liquid pressure inside the anti-slip mechanism 8 is used to drive the extension of the anti-slip mechanism 8, so that the bottom of the tilted side of the cylinder 4 has the corresponding anti-slip mechanism 8 extending out when tilting. After the anti-slip mechanism 8 extends out, it is used to prevent the cylinder 4 from sliding sideways after tilting. In the initial state, that is, when the rotating ring 16 is not rotating, the adjusting ring 1 3. Rotate the ring 13 to the inside of the rotating groove 23, and fix the positioning pin 21 to the fixing ring 14, thereby fixing the telescopic sleeve 17 inside the positioning pin 21. When the adjusting ring 13 rotates to the point where the arc-shaped groove 15 fits against the outer end face of the telescopic sleeve 17, the first connecting pipe 10 and the second connecting pipe 11 are connected. The medium enters the inside of the connecting cavity 24 through the elastic cavity 12. The bottom of the positioning pin 21 is also provided with a sealing gasket 20 to improve the airtightness of the connecting cavity 24. Under the action of the medium pressure inside the connecting cavity 24, the telescopic sleeve 17 is driven to extend from the inside of the positioning pin 21 to limit the cylinder 4. To prevent lateral slippage, the rotating groove 23 of the telescopic sleeve 17 fits against the inner wall of the telescopic sleeve 17 or the inner wall of the anti-slip mechanism 8 when it extends, thus preventing media leakage. When the upper cylinder 4 is removed, under the elastic force of the elastic element inside the telescopic sleeve 17 and the elastic cavity 12, the media inside the connecting cavity 24 and the elastic cavity 12 flows back into the annular cavity 9, causing the limiting ring 7 to return to being flush with the surface of the limiting recess 3. When the telescopic sleeve 17 retracts into the positioning post 21, the rotating grooves 23 are aligned with each other. At this time, the adjusting ring 13 can reverse under the action of the spiral spring 18 and limit the telescopic sleeve 17.

Claims

1. A plastic storage device, comprising a cylindrical body, characterized in that: The top of the cylinder is provided with a rotating cover plate for sealing, and the bottom of the cylinder is provided with an annular protrusion. The upper end face of the rotating cover plate is provided with a limiting cavity, and the limiting cavity is provided with a limiting component for limiting and preventing the annular protrusion from sliding under the weight of the cylinder. The limiting component includes a limiting block, a limiting ring, and an anti-slip mechanism. The limiting block is embedded in the inner wall of the limiting cavity. The bottom of the limiting cavity has an annular cavity for driving the limiting block to move horizontally. The limiting ring is slidably connected inside the annular cavity. The anti-slip mechanism is fixedly connected to the inner wall of the limiting ring and protrudes from the surface of the limiting cavity. The inner wall of the limiting cavity is provided with an elastic cavity, which is connected to the annular cavity through a second connecting pipe, and the limiting block is elastically connected inside the elastic cavity. The limiting ring includes a fixed ring and a rotating ring. The fixed ring is fixedly connected to the anti-slip mechanism and is slidably connected inside the ring cavity. The rotating ring is rotatably connected to the fixed ring through a spiral spring. An adjusting ring for controlling the extension of the anti-slip mechanism is fixedly connected to the outer extension of the fixed ring. The bottom of the annular cavity is provided with a first connecting pipe. One end of the first connecting pipe is connected to the lower part of the anti-slip mechanism, and the other end of the first connecting pipe away from the anti-slip mechanism is connected to the lower part of the rotating ring. The rotating ring is provided with a staggered guide groove. When the rotating ring rotates to the point where the limit on the anti-slip mechanism is released, the two ends of the guide groove are connected to the second connecting pipe and the first connecting pipe respectively, and the limit block is correspondingly set with the anti-slip mechanism. The anti-slip mechanism includes a positioning post and a telescopic sleeve. The positioning post is fixedly connected to a fixed ring, and the telescopic sleeve is slidably sleeved inside the positioning post. The positioning post and the telescopic sleeve have rotating grooves on their side ends that are adapted to the adjusting ring, and the inner wall of the adjusting ring has an arc-shaped groove that is adapted to the outer end face of the telescopic sleeve.

2. A plastic storage device according to claim 1, characterized in that: The bottom of the outer end face of the annular protrusion is provided with a sloping protrusion, and the side of the limiting block that is in contact with the annular protrusion is provided with a notch that matches the rotating groove.

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