A tight fitting assembly

Abstract

This utility model discloses a tightening assembly. A stepped through-hole is provided on the cylindrical body. A sealing end cap is sealed and installed on the top of the cylindrical body, and a protruding ring is provided at the bottom of the sealing end cap, forming an annular groove between the protruding ring and the stepped through-hole. The upper part of the extrusion sleeve is a guide ring, the top of which is sealed and installed in the annular groove. The lower part of the extrusion sleeve is an extrusion ring, the bottom of which is sealed and installed in the stepped through-hole. A pressure ring is installed at the bottom of the cylindrical body. The tightening die is placed on top of the pressure ring. There is a gap between the outer circle of the tightening die and the inner wall of the stepped through-hole, and the bottom of the extrusion ring is located within the gap. The conical extrusion hole fits against the conical surface of the tightening die. The beneficial effects of this utility model are: different tightening dies can be used to tighten different products according to the product model. During assembly and disassembly, the tightening die and the extrusion ring are disassembled, while other parts of the tightening assembly are not disassembled, avoiding the product tightening quality problems caused by assembly errors during secondary assembly.

Description

Technical Field

[0001] This utility model relates to the sealing of a cylinder, and in particular to a sealing assembly. Background Technology

[0002] With the increasing demands for national security, the requirements for the quality and wartime support capabilities of weapons and ammunition are constantly increasing, thus raising the requirements for the efficiency and quality of ammunition production. The pressing and assembly of finished cartridges is a key process in ammunition production.

[0003] The sealing process is the final step in bonding the cartridge case to the projectile (projectile), and it is also the last step in the shell assembly process. During the assembly of small and medium caliber shells, a sealing device is needed to tightly bond the projectile to the cartridge case, ensuring that the extraction force remains within a certain range and stable, thereby achieving the intended ballistic target.

[0004] After the muzzle is tightened, it is necessary to ensure that the projectile body and the cartridge case have a high degree of coaxiality after the muzzle is assembled. Moreover, there are many types of projectiles, which means that multiple muzzle molds and multiple muzzle devices are required, which undoubtedly increases the production cost. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tight-fitting component.

[0006] The objective of this utility model is achieved through the following technical solution: a tight-fitting assembly, comprising:

[0007] The cylindrical body has a stepped through hole, and the step of the stepped through hole forms the first stepped surface;

[0008] A sealing end cap is installed on the top of the cylinder. A raised ring is provided at the bottom of the sealing end cap, and an annular groove is formed between the raised ring and the large hole of the stepped through hole.

[0009] The extrusion sleeve is a circular ring structure that is larger at the top and smaller at the bottom. The upper part of the extrusion sleeve is a guide ring, the top of which is sealed and installed in an annular groove. The gap between the top of the guide ring and the sealing end cap forms an upper oil cavity. The lower part of the extrusion sleeve is an extrusion ring, the inner wall of which is an inverted conical extrusion hole. A second step surface is formed between the guide ring and the extrusion ring. The bottom of the extrusion ring is sealed and installed in a small hole in the step through hole. The cavity between the first step surface and the second step surface forms a lower oil cavity.

[0010] A pressure ring is installed at the bottom of the cylinder, and the inner diameter of the pressure ring is smaller than the diameter of the small hole of the stepped through hole;

[0011] The clamping die is placed on top of the pressure ring and is located inside the small hole of the stepped through hole. There is a gap between the outer circle of the clamping die and the inner wall of the small hole of the stepped through hole. The top of the clamping die has a conical surface corresponding to the conical extrusion hole. The bottom of the extrusion ring is located in the gap, and the conical extrusion hole fits with the conical surface of the clamping die.

[0012] Optionally, the clamping die includes several outer modules and inner modules corresponding to the number of outer modules. The top outer wall of the outer module is a guide conical surface. Several outer modules can be spliced ​​into a circular structure, and the guide conical surface constitutes the conical surface of the clamping die. Several inner modules can also be spliced ​​into a circular structure. The upper edge of the outer module extends inward to form an upper arc-shaped flange, and the lower edge of the outer module extends inward to form a lower arc-shaped flange. An arc-shaped groove is formed between the upper arc-shaped flange and the lower arc-shaped flange. The inner module is clamped in the arc-shaped groove of the corresponding outer module. A second rivet mounting hole is radially opened on the outer wall of the inner module. A first rivet mounting hole is radially opened on the groove wall of the arc-shaped groove. A rivet is installed in the second rivet mounting hole, and the other end of the rivet is installed in the corresponding first rivet mounting hole. The outer wall of the inner module is in close contact with the groove wall of the arc-shaped groove.

[0013] Optionally, the bottom of the outer module is provided with a first screw hole in the axial direction, and the first screw hole is connected to the first rivet mounting hole.

[0014] Optionally, the outer module may also have air storage holes on its circumferential sidewalls.

[0015] Optionally, a second screw hole is provided axially at the bottom of the inner module, and the second screw hole communicates with the second rivet mounting hole.

[0016] Optionally, a flange is provided on the top of the cylinder, and the cylinder is connected to the sealing end cover by the flange.

[0017] Optionally, a lifting plate is fitted onto the cylinder, and the lifting plate is connected to the cylinder via a flange.

[0018] Optionally, annular sealing grooves are provided on both the inner and outer walls of the guide ring, and annular sealing rings are installed in the annular sealing grooves.

[0019] Optionally, a first positioning post protruding upward is provided on the first step surface, and a positioning through hole is provided on the guide ring. The first positioning post passes through the positioning through hole, and the top of the first positioning post fits against the sealing end cover. The first positioning post and the positioning through hole are sealed by a sealing ring installed on the first positioning post.

[0020] Optionally, the bottom of the sealing end cap is provided with a downwardly protruding second positioning post, and the top of the guide ring is provided with a positioning blind hole, and the first positioning post is installed in the positioning blind hole.

[0021] The present invention has the following advantages: The sealing assembly of the present invention can be fitted with different sealing dies according to the product model, so as to achieve sealing of different products. Moreover, during the disassembly and assembly process, the sealing die and the extrusion ring are disassembled and assembled, while the other parts of the sealing assembly are not disassembled and assembled, thereby avoiding the disassembly and assembly of the entire sealing assembly and avoiding the assembly errors caused by secondary assembly, which affect the product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the cylinder structure;

[0025] Figure 4 This is a schematic diagram of the sealing cover plate.

[0026] Figure 5 This is a schematic diagram of the extrusion sleeve structure;

[0027] Figure 6 Schematic diagram of the tight-fitting die structure Figure 1 ;

[0028] Figure 7 Schematic diagram of the tight-fitting die structure Figure 2 ;

[0029] Figure 8 for Figure 7 Schematic diagram of the cross section of AA;

[0030] Figure 9 This is a schematic diagram of the external module;

[0031] Figure 10 This is a structural diagram of the internal module;

[0032] In the figure, 1-tightening mold, 10-outer module, 11-first gap, 12-first screw hole, 13-air storage hole, 14-first rivet mounting hole, 15-upper arc-shaped flange, 16-lower arc-shaped flange, 17-arc groove, 18-guide conical surface, 20-inner module, 21-second gap, 22-second screw hole, 23-second rivet mounting hole, 30-rivet, 41-lifting plate, 42-sealing end cap, 43-convex ring, 44-cylinder, 45-extrusion sleeve, 46-pressure ring, 47-upper oil cavity, 48-lower oil cavity, 49-first positioning post, 50-second positioning post, 51-conical extrusion hole, 52-flange, 53-first step surface, 54-guide ring, 55-extrusion ring, 56-second step surface, 57-annular sealing groove, 58-positioning through hole. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0039] like Figure 1 As shown, a sealing assembly includes a cylindrical body 44, a sealing end cap 42, a compression sleeve 45, a pressure ring 46, and a sealing mold 1. In this embodiment, the cylindrical body 44 has a stepped through hole that is larger at the top and smaller at the bottom, and a first stepped surface 53 is formed at the step of the stepped through hole. The sealing end cap 42 is sealed and installed on the top of the cylindrical body 44. The sealing between the sealing end cap 42 and the top of the cylindrical body 44 is existing technology, such as using a sealing ring, and therefore will not be described in detail. In this embodiment, a protruding ring 43 is provided at the bottom of the sealing end cap 42. When the sealing end cap 42 and the cylindrical body 44 are installed, an annular groove is formed between the protruding ring 43 and the larger hole of the stepped through hole. In this embodiment, the compression sleeve 45 is a circular ring that is larger at the top and smaller at the bottom. The structure includes a guide ring 54 at the top of the extrusion sleeve 45, with its top sealed within an annular groove. The gap between the top of the guide ring 54 and the sealing end cap 42 forms an upper oil cavity 47. In this embodiment, annular sealing grooves 57 are provided on both the inner and outer walls of the guide ring 54, and annular sealing rings are installed within these grooves. Therefore, the upper oil cavity 47 is a sealed cavity. The upper oil cavity 47 is connected to the oil cylinder via an oil passage. When oil is supplied to the upper oil cavity 47, it pushes the extrusion sleeve 45 downwards. The lower part of the extrusion sleeve 45 is an extrusion ring 55. The inner wall of the extrusion ring 55 is an inverted conical extrusion hole 51. A second step surface 56 is formed between the guide ring 54 and the extrusion ring 55. The bottom of the extrusion ring 55... The seal is installed inside the small hole of the stepped through hole, and the cavity between the first stepped surface 53 and the second stepped surface 56 forms a lower oil chamber 48. Similarly, the lower oil chamber 48 is also connected to an oil cylinder through an oil passage. When the lower oil chamber 48 supplies oil, it pushes the extrusion sleeve 45 upward. Of course, when the upper oil chamber 47 supplies oil, the lower oil chamber 48 does not supply oil, and vice versa. In this embodiment, the pressure ring 46 is installed at the bottom of the cylinder 44, and the inner diameter of the pressure ring 46 is smaller than the diameter of the small hole of the stepped through hole. That is to say, a step is formed between the pressure ring 46 and the cylinder 44, and the clamping die 1 is placed on the top of the pressure ring 46, that is, the clamping die 1 is placed on the step. Furthermore, the pressure ring 46 A raised ring is provided on the top of 6, and the raised ring is installed in conjunction with the small hole of the stepped through hole, thereby ensuring the installation accuracy of the pressure ring 46 and the cylinder 44. The pressure ring 46 and the cylinder 44 are connected by locking screws. In this embodiment, the tightening die 1 is located in the small hole of the stepped through hole. There is a gap between the outer circle of the tightening die 1 and the inner wall of the small hole of the stepped through hole. The top of the tightening die 1 has a conical surface corresponding to the conical extrusion hole 51. The bottom of the extrusion ring 55 is located in the gap, and the conical extrusion hole 51 fits with the conical surface of the tightening die 1. When oil is supplied in the upper oil chamber 47, the extrusion sleeve 45 moves downward, thereby causing the tightening die 1 to shrink through the cooperation of the conical extrusion hole 51 and the conical surface, thus completing the tightening of the workpiece.

[0040] In this embodiment, the clamping mold 1 includes several outer modules 10 and inner modules 20 corresponding to the number of outer modules 10. The top outer side wall of the outer module 10 is a guide conical surface 18, and the guide conical surface 18 constitutes the conical surface of the clamping mold 1. Several outer modules 10 can be assembled into a circular structure. In use, the conical extrusion hole 51 extrudes the guide conical surface 18, thereby causing the outer modules 10 to shrink inward, so that several outer modules 10 are assembled into a circular structure. When the outer modules 10 are assembled into a circular structure, several inner modules 20 can also be assembled into a circular structure. In this embodiment, when the clamping mold 1 is not clamped, that is, in the initial installation state, adjacent outer modules 10 have a first gap in the circumferential direction. Similarly, adjacent inner modules 20 also have a first gap in the circumferential direction. There is a second gap, and at this time the workpiece has not shrunk. The shrunk end of the workpiece can be inserted into the circumference enclosed by the inner module 20. The inner module 20 has a limiting step, and the workpiece rests on the limiting step. During the tightening process, the extrusion sleeve 45 moves downward, and the conical extrusion hole 51 pushes the tightening die 1, thereby gradually reducing the first gap and the second gap until they disappear. The circumference of the inner module 20 gradually decreases, thus completing the tightening of the workpiece. Furthermore, the upper edge of the outer module 10 extends inward to form an upper arc-shaped flange 15, and the lower edge of the outer module 10 extends inward to form a lower arc-shaped flange 16. An arc-shaped groove 17 is formed between the upper arc-shaped flange 15 and the lower arc-shaped flange 16. The inner module 20 is locked in the corresponding arc-shaped groove 17 of the outer module 10, thereby making the outer mold When block 10 contracts in the circumferential direction, it can drive inner module 20 to contract in the circumferential direction. In this embodiment, in order to ensure the reliability of the installation between outer module 10 and inner module 20, a second rivet 30 mounting hole 23 is radially opened on the outer side wall of inner module 20, and a first rivet 30 mounting hole 14 is radially opened on the groove wall of arc-shaped groove 17. A rivet 30 is installed in the second rivet 30 mounting hole 23, and the other end of the rivet 30 is installed in the corresponding first rivet 30 mounting hole 14. The outer side wall of inner module 20 is in close contact with the groove wall of arc-shaped groove 17. During installation, one end of the rivet 30 is first installed in the second rivet 30 mounting hole 23 of inner module 20, and then the other end of the rivet 30 is installed in the first rivet 30 mounting hole 14. Within hole 14, the pull rivet 30 has a positioning function, ensuring that the relative position between the inner module 20 and the outer module 10 is stable after the inner module 20 is installed in the arc-shaped slot 17. In this embodiment, the pull rivet 30 is a commercially available product, and those skilled in the art can select a suitable pull rivet 30 according to the actual situation. During disassembly, the lower hydraulic cylinder supplies oil, causing the extrusion sleeve 45 to move up and down, thereby causing the clamping die 1 to loosen the workpiece. If it is necessary to separate the inner module 20 and the outer module 10, a prying tool with a thin sheet structure is used to separate the inner module 20 and the outer module 10, ultimately causing the pull rivet 30 to disengage from the first pull rivet 30 mounting hole 14, and the inner module 20 can be removed. The prying tool is existing technology, and those skilled in the art can make conventional selections.If the model of the inner module 20 needs to be changed, install the pull stud 30 in the second pull stud 30 mounting hole 23 of the inner module 20, and then install the other end of the pull stud 30 in the first pull stud 30 mounting hole 14, so that the outer wall of the inner module 20 is in close contact with the groove wall of the arc-shaped slot 17, thus completing the installation of the inner module 20.

[0041] In this embodiment, the bottom of the outer module 10 is provided with a first screw hole 12. When disassembling the outer module 10, a first screw can be installed in the first screw hole 12. Then, by extracting the first screw, the outer module 10 can be taken out of the mold. Furthermore, the first screw hole 12 is connected to the mounting hole 14 of the first rivet 30. Therefore, during the installation of the rivet 30, the gas in the mounting hole 14 of the first rivet 30 can be discharged through the first screw hole 12, thereby avoiding the air resistance in the mounting hole 14 of the first rivet 30 from affecting the installation of the rivet 30. Moreover, when disassembling the rivet 30, a negative pressure will not be formed in the mounting hole 14 of the first rivet 30, thereby facilitating the rivet 30 to detach from the mounting hole 14 of the first rivet 30.

[0042] In this embodiment, when the outer module 10 and inner module 20 are not tightened, there is a first gap 11 between adjacent outer modules 10 and a second gap 21 between adjacent inner modules 20. The outer module 10 also has an air storage hole 13 on its side wall in the circumferential direction. When the outer module 10 shrinks, most of the gas in the first gap 11 is discharged through the gap. If the outer module 10 shrinks too quickly, a small amount of gas cannot be discharged from the gap in time, thus affecting the fit between adjacent outer modules 10. At this time, this part of the gas can be stored in the air storage hole 13, thereby ensuring that the adjacent outer modules 10 can fit tightly during the tightening process. Of course, the gas itself is very small, and even if the gas enters the air storage hole 13, it will not form an air blockage and affect the fit between adjacent outer modules 10.

[0043] In this embodiment, the bottom of the inner module 20 is provided with a second screw hole 22. Similarly, during disassembly, a second screw is installed on the second module. After the inner module 20 and the outer module 10 are pried apart with a tool, the inner module 20 disengages from the arc-shaped slot 17. By removing the second screw, the outer module 10 can be taken out. Furthermore, the second screw hole 22 is connected to the mounting hole 23 of the second rivet 30. Similarly, during the installation of the rivet 30 and the inner module 20, there will be no air resistance, and during the disassembly process, there will be no negative pressure, which facilitates the installation of the rivet 30 and the inner module 20.

[0044] In this embodiment, when disassembling the clamping mold 1, the pressure ring 46 is first disassembled from the cylinder 44, and then the clamping mold 1 can be taken out. After the clamping mold 1 is taken out, it can be divided into several pieces, and then the corresponding inner module 20 and outer module 10 can be disassembled and assembled. During installation, the outer module 10 is first assembled with the inner module 20, and then the outer module 10 is spliced ​​into a ring and placed on the pressure ring 46. Then the pressure ring 46 is connected to the cylinder 44 with locking screws. In this embodiment, a [missing information - likely a design element] can also be made at the bottom of the outer module 10. Some markings, such as numbers engraved on the bottom of the outer module 10, are used to ensure that the outer module 10 can be arranged in order according to the numbers and form a ring structure when reassembled. In this embodiment, the operator can also avoid the outer module 10 and the inner module 20 being installed backwards according to the position of the first screw hole 12 and the second screw hole 22. Therefore, after changing the product model, only the clamping mold 1 and the pressure ring 46 need to be disassembled and installed. Other parts do not need to be disassembled, thereby avoiding the disassembly and assembly of the entire clamping assembly and avoiding the assembly error caused by secondary assembly, which affects the product quality.

[0045] In this embodiment, a flange 52 is provided on the top of the cylinder 44, and the cylinder 44 is connected to the sealing end cover 42 through the flange. Furthermore, a lifting plate 41 is fitted on the cylinder 44, and the lifting plate 41 is connected to the cylinder 44 through the flange. In this embodiment, the lifting plate 41 is connected to a lifting cylinder, which is of the lifting type, so that the lifting plate 41 can be lifted and lowered, thereby driving the entire tightening assembly to lift and lower. In use, the lifting cylinder moves downward, so that the workpiece is inserted through the center hole of the pressure ring 46 and enters the cavity enclosed by the inner module 20. When the top of the workpiece abuts against the limiting step, the lifting cylinder stops working. After the workpiece is tightened, the lifting cylinder moves upward, thereby causing the tightening assembly to move upward, so that the workpiece is removed from the tightening mold 1 and exits the tightening assembly.

[0046] In this embodiment, a first positioning post 49 protruding upward is provided on the first step surface 53, and a positioning through hole 58 is provided on the guide ring 54. The first positioning post 49 passes through the positioning through hole 58, and the top of the first positioning post 49 fits against the sealing end cap 42. The first positioning post 49 and the positioning through hole 58 are sealed by a sealing ring installed on the first positioning post 49. Therefore, the installation accuracy of the extrusion sleeve 45 and the cylinder 44 can be guaranteed by the cooperation between the first positioning post 49 and the positioning through hole 58. Furthermore, a second positioning post 50 protruding downward is provided at the bottom of the sealing end cap 42, and a positioning blind hole is provided at the top of the guide ring 54. The first positioning post 49 is installed in the positioning blind hole. The installation accuracy of the sealing end cap 42 and the cylinder 44 is guaranteed by the positioning of the second positioning post 50 and the positioning blind hole.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A closure assembly, characterized by: include: A cylindrical body, wherein a stepped through hole is provided on the cylindrical body, and a first stepped surface is formed at the step of the stepped through hole; A sealing end cap is installed on the top of the cylinder. A convex ring is provided at the bottom of the sealing end cap, and an annular groove is formed between the convex ring and the large hole of the stepped through hole. The extrusion sleeve has a circular ring structure that is larger at the top and smaller at the bottom. The upper part of the extrusion sleeve is a guide ring, the top of which is sealed and installed in the annular groove. The gap between the top of the guide ring and the sealing end cap forms an upper oil cavity. The lower part of the extrusion sleeve is an extrusion ring, the inner wall of which is an inverted conical extrusion hole. A second step surface is formed between the guide ring and the extrusion ring. The bottom of the extrusion ring is sealed and installed in the small hole of the step through hole. The cavity between the first step surface and the second step surface forms a lower oil cavity. A pressure ring is installed at the bottom of the cylinder, and the inner diameter of the pressure ring is smaller than the diameter of the small hole of the stepped through hole; A tightening die is placed on top of the pressure ring and located inside the small hole of the stepped through hole. There is a gap between the outer circle of the tightening die and the inner wall of the small hole of the stepped through hole. The top of the tightening die has a conical surface corresponding to the conical extrusion hole. The bottom of the extrusion ring is located within the gap, and the conical extrusion hole fits against the conical surface of the tightening die.

2. A port assembly according to claim 1, wherein: The clamping die includes several outer modules and inner modules corresponding to the number of outer modules. The top outer wall of each outer module is a guide conical surface. Several outer modules can be assembled into a circular structure, and the guide conical surface constitutes the conical surface of the clamping die. Several inner modules can also be assembled into a circular structure. The upper edge of each outer module extends inward to form an upper arc-shaped flange, and the lower edge of each outer module extends inward to form a lower arc-shaped flange. An arc-shaped groove is formed between the upper and lower arc-shaped flanges. The inner module is clamped in the arc-shaped groove corresponding to the outer module. A second rivet mounting hole is radially opened on the outer wall of each inner module. A first rivet mounting hole is radially opened on the groove wall of the arc-shaped groove. A rivet is installed in the second rivet mounting hole, and the other end of the rivet is installed in the corresponding first rivet mounting hole. The outer wall of the inner module is in close contact with the groove wall of the arc-shaped groove.

3. A port assembly according to claim 2, wherein: The bottom of the outer module has a first screw hole axially connected to the first rivet mounting hole.

4. A port assembly according to claim 3, wherein: The outer module also has air storage holes on its circumferential sidewalls.

5. A port assembly according to claim 4, wherein: The bottom of the inner module is provided with a second screw hole, which is connected to the second rivet mounting hole.

6. A ported assembly according to any one of claims 1 to 5, wherein: A flange is provided on the top of the cylinder, and the cylinder is connected to the sealing end cover by the flange.

7. A port assembly according to claim 6, wherein: A lifting plate is fitted onto the cylinder, and the lifting plate is connected to the cylinder via a flange.

8. A ported assembly according to any one of claims 1 to 5, wherein: The guide ring has annular sealing grooves on both its inner and outer walls, and annular sealing rings are installed in the annular sealing grooves.

9. A clamping assembly according to any one of claims 1 to 5, characterized in that: The first step surface is provided with an upwardly protruding first positioning post, the guide ring is provided with a positioning through hole, the first positioning post passes through the positioning through hole, and the top of the first positioning post is fitted with the sealing end cap, and the first positioning post and the positioning through hole are sealed by a sealing ring installed on the first positioning post.

10. A clamping assembly according to claim 9, characterized in that: The bottom of the sealing end cap is provided with a downward protruding second positioning post, and the top of the guide ring is provided with a positioning blind hole, in which the first positioning post is fitted and installed.

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