A leak-proof adjustable booster cylinder

Abstract

The present invention discloses a leak-proof adjustable booster cylinder, which optimizes and improves the piston structure therein, and specifically embodies a piston assembly formed by an upper piston plate, a lower piston column and a connecting guide rod. The overall piston assembly is significantly different from a conventional piston structure in that: under the action of medium pressure, the piston assembly has a secondary sliding process, and the secondary sliding process is mainly used to promote the deformation process of a cooperative rubber sleeve. However, the deformation process of the cooperative rubber sleeve will also be affected by the medium pressure change in a lower pressure chamber, which can be understood as the cooperative rubber sleeve being subjected to double pressure. In this process, the friction resistance in the rubber sealing process is changed by a pressurized top ring in the side ring, and the deformation process of the cooperative rubber sleeve is first assisted by the double pressure, while the two pressurized matching plates are only affected by the pressure of the medium in the lower pressure chamber, which interferes with the deformation of the cooperative rubber sleeve again. The difference is that the pressurized top ring and the cooperative rubber sleeve are "reinforced".

Description

Technical Field

[0001] The invention relates to the technical field of booster cylinders, and in particular to a leak-proof and adjustable booster cylinder. Background Art

[0002] The principle of the booster cylinder is to use Pascal's law of conservation of energy to achieve pressure increase by changing the area ratio of the pressurized section. It mainly uses pneumatic and hydraulic methods. Its essence is: using structures such as piston plates as key structures to withstand pressure. You can refer to the relevant content in the publication number CN104895854A.

[0003] The internal sealing effect is the key factor affecting the use effect. The sealing effect is also directly related to the pressure of the medium (liquid or gas), and it also needs to cooperate with the linear movement of the piston plate. For this kind of piston plate, sealing structures such as rubber sealing rings are conventionally used. What needs to be explained is that it is necessary to change the medium pressure in accordance with the use requirements (soft in place, pre-pressure, pressurization, etc.). When the medium pressure changes and fluctuates greatly, it is difficult for sealing structures such as rubber sealing rings to synchronously meet the use requirements. Specifically, as the medium pressure increases, the friction resistance between the sealing ring and the inner wall of the cylinder increases, which is not conducive to the linear movement of the piston plate, and may even increase the wear of structures such as rubber sealing rings, leading to internal leakage.

[0004] This application proposes a solution to this problem. Summary of the invention

[0005] The purpose of the present invention is to provide a leak-proof adjustable boost cylinder. Regarding the sealing structure in the boost cylinder, the conventional rubber sealing ring structure cannot fully meet the pressure fluctuation state, and the action process of the boost cylinder aggravates the wear of the conventional sealing ring structure and causes internal leakage.

[0006] The object of the present invention can be achieved by the following technical scheme: a leak-proof adjustable booster cylinder, comprising a cylinder body and a pressure sensor, wherein a piston assembly is arranged inside the cylinder body, and the inside of the cylinder body is divided into an upper pressure chamber and a lower pressure chamber arranged from top to bottom by the piston assembly;

[0007] The piston assembly comprises an upper piston plate, a lower piston column and a connecting guide rod, the surface area of ​​the upper piston plate is larger than that of the lower piston column, and the upper piston plate and the lower piston column are slidably connected along the vertical direction on the inner wall positions of the upper pressure chamber and the lower pressure chamber, the upper end of the connecting guide rod is fixedly connected to the upper piston plate, and the lower end of the connecting guide rod is slidably connected to the lower piston column;

[0008] A cooperative rubber sleeve is arranged between the upper piston plate and the lower piston column, a side ring is installed at the middle section of the upper pressure chamber corresponding to the cooperative rubber sleeve, and a pressure top ring is installed at the position of the side ring close to the cooperative rubber sleeve.

[0009] It is further configured that: a first spring is arranged at an outer position of the lower piston column corresponding to the lower pressure chamber.

[0010] It is further configured as follows: the interior of the cooperative rubber sleeve is hollow, and the interior of the cooperative rubber sleeve is connected with the interior of the lower pressure chamber through the lower piston column, and a pressure-bearing portion corresponding to the side ring is provided at the middle section of the cooperative rubber sleeve.

[0011] It is further configured as follows: the diameters of the upper and lower ends of the cooperative rubber sleeve are equal, and the diameter of the cooperative rubber sleeve decreases from the upper part to the middle part and from the lower part to the middle part.

[0012] It is further configured as follows: the interior of the side ring is hollow, the cylinder body is respectively equipped with a first interface, a second interface and a third interface corresponding to the upper pressure bin, the lower pressure bin and the side ring, and the probe position of the pressure sensor extends to the upper pressure bin and the lower pressure bin respectively.

[0013] It is further configured as follows: a pressure-matching plate is symmetrically slidably installed along the up and down directions at an external position inside the cooperative rubber sleeve corresponding to the connecting guide rod, and a second spring is arranged on the outer wall position of the connecting guide rod corresponding to the middle position of the two pressure-matching plates, and the second spring is respectively installed on the two pressure-matching plates.

[0014] It is further configured that: the cross-sections of the press-fit plates are all in a curved arch shape, wherein the bending direction of the press-fit plates located at the upper side is downward, and wherein the bending direction of the press-fit plates located at the lower side is upward.

[0015] It is further configured that: the pressure-fit plate located at the lower side is arranged at a position lower than the side ring, and the pressure-fit plate located at the upper side is arranged at a position higher than the side ring.

[0016] It is further configured that: the sum of the maximum radius of the press-fit plate and the ring diameter of the side ring is greater than the inner radius of the upper press chamber.

[0017] The present invention has the following beneficial effects:

[0018] 1. The overall structure is based on the conventional booster cylinder, and its internal basic structure will not be completely changed. The main purpose is to optimize and improve the piston structure therein, which is specifically embodied in the piston assembly formed by the upper piston plate, the lower piston column and the connecting guide rod. The piston assembly in the present invention is significantly different from the conventional piston structure in that: under the action of the medium pressure, the piston assembly has a secondary sliding process, and the secondary sliding process mainly acts on the cooperative rubber sleeve, and its purpose is to promote the deformation process of the cooperative rubber sleeve and cooperate with the pressure top ring, but further change the structural design of the connecting guide rod and the lower piston column, so that the deformation process of the cooperative rubber sleeve will also be affected by the pressure change in the lower pressure chamber, so that it can be understood that the cooperative rubber sleeve is subjected to double pressure. In this process, the pressure top ring in the side ring is used to change the friction resistance in the rubber sealing process, while ensuring the basic sealing effect, it can also avoid excessive friction and affect the operation process of the piston structure;

[0019] 2. What needs to be explained again in regard to the above content is that: based on the connecting guide rod, two symmetrically arranged pressure-matching plates are added at the position inside the cooperative rubber sleeve. The pressure-matching plates are only affected by the pressure changes in the lower pressure chamber, and the pressure-matching plates will float up under the action of the pressure environment in the lower pressure chamber. However, the floating process will also directly affect the deformation process of the cooperative rubber sleeve and the pressure top ring, which is specifically manifested as: the deformation of the cooperative rubber sleeve is interfered with again by the pressure-matching plates. The difference is that the pressure top ring and the cooperative rubber sleeve are "reinforced". BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a leak-proof adjustable boost cylinder proposed by the present invention;

[0022] Figure 2 A cross-sectional view of a cylinder body in a leak-proof adjustable boost cylinder proposed by the present invention;

[0023] Figure 3 The invention provides a leak-proof adjustable booster cylinder Figure 1 A cross-sectional view of

[0024] Figure 4 A cross-sectional view of a piston assembly in a leak-proof adjustable booster cylinder proposed by the present invention;

[0025] Figure 5This is a disassembled diagram of a piston assembly in a leak-proof adjustable booster cylinder proposed by the present invention;

[0026] Figure 6 A cross-sectional view of a side ring in a leak-proof adjustable boost cylinder proposed by the present invention;

[0027] Figure 7 A cross-sectional view of a leak-proof and adjustable booster cylinder cooperative rubber sleeve proposed by the present invention;

[0028] Figure 8 The invention provides a leak-proof adjustable booster cylinder Figure 3 Schematic diagram of the structure of part A.

[0029] In the figure: 1, cylinder body; 101, upper pressure chamber; 102, lower pressure chamber; 2, pressure sensor; 3, upper piston plate; 4, cooperative rubber sleeve; 401, pressure-bearing part; 5, side ring; 6, first spring; 7, lower piston column; 8, connecting guide rod; 9, second spring; 10, pressure-bearing matching plate; 11, pressure-bearing top ring. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: With respect to the sealing structure in the booster cylinder, the conventional rubber sealing ring cannot fully meet the pressure fluctuation state, and the action process of the booster cylinder aggravates the wear of the conventional sealing ring structure and causes internal leakage. For this, the present application proposes a solution:

[0032] Reference Figures 1 to 8 In this embodiment, a leak-proof adjustable boost cylinder includes a cylinder body 1 and a pressure sensor 2. A piston assembly is arranged inside the cylinder body 1, and the inside of the cylinder body 1 is divided into an upper pressure chamber 101 and a lower pressure chamber 102 arranged from top to bottom by the piston assembly;

[0033] The piston assembly includes an upper piston plate 3, a lower piston column 7 and a connecting guide rod 8. The surface area of ​​the upper piston plate 3 is larger than that of the lower piston column 7, and the upper piston plate 3 and the lower piston column 7 are slidably connected along the vertical direction on the inner wall positions of the upper pressure chamber 101 and the lower pressure chamber 102. The upper end of the connecting guide rod 8 is fixedly connected to the upper piston plate 3, and the lower end of the connecting guide rod 8 is slidably connected to the lower piston column 7.

[0034] A cooperative rubber sleeve 4 is arranged between the upper piston plate 3 and the lower piston column 7, a side ring 5 is installed at the middle position of the cooperative rubber sleeve 4 corresponding to the upper pressure chamber 101, a pressure top ring 11 is installed at the position of the side ring 5 close to the cooperative rubber sleeve 4, and a first spring 6 is arranged at the outer position of the lower piston column 7 corresponding to the lower pressure chamber 102.

[0035] Basic principle: Refer to Figure 3 To explain, by injecting medium into the upper pressure chamber 101, the medium in the lower pressure chamber 102 flows out in a high-pressure state due to the difference in cross-sectional area between the upper piston plate 3 and the lower piston column 7. This part is the basic content of the present invention. The conventional booster cylinder is mainly based on the piston structure, but in this embodiment, the upper piston plate 3, the lower piston column 7 and the connecting guide rod 8 are combined to form a piston assembly. When the entire piston assembly is subjected to the pressure of the upper pressure chamber 101, it will gradually slide downward. Its essence is:

[0036] First, the upper piston plate 3 slides downward first, and in theory, the lower piston column 7 will also slide downward synchronously, but because the connecting guide rod 8 and the lower piston column 7 are only connected by sliding, there is no force conduction process between the two. Figure 5 The essence of the sliding part connecting the guide rod 8 and the lower piston column 7 is composed of multiple groups of empty bars, so that the medium in the lower pressure chamber 102 will also flow back through the empty bars and fill the cooperative rubber sleeve 4. In this process, the medium in the lower pressure chamber 102 is used as a "force conduction structure", so that the lower piston column 7 can slide slightly. This can be understood as: the biggest difference between the piston assembly in this embodiment and the conventional piston structure is that there is a secondary sliding process, which is essentially that the sliding stroke of the upper piston plate 3 is greater than or equal to the sliding stroke of the lower piston column 7, thereby enhancing the medium pressure in this way.

[0037] Embodiment 2: This embodiment provides additional explanations on the use of the cooperative rubber sleeve in Embodiment 1:

[0038] The interior of the cooperative rubber sleeve 4 is hollow, and the interior of the cooperative rubber sleeve 4 is connected to the interior of the lower pressure chamber 102 through the lower piston column 7. A pressure-bearing part 401 corresponding to the side ring 5 is provided at the middle position of the cooperative rubber sleeve 4. The diameters of the upper and lower ends of the cooperative rubber sleeve 4 are equal, and the diameter of the cooperative rubber sleeve 4 decreases from the top to the middle position and from the bottom to the middle position. The interior of the side ring 5 is hollow, and the cylinder body 1 is respectively equipped with a first interface, a second interface and a third interface corresponding to the upper pressure chamber 101, the lower pressure chamber 102 and the side ring 5, and the probe position of the pressure sensor 2 extends to the upper pressure chamber 101 and the lower pressure chamber 102, respectively.

[0039] Solution description: Combined with the technical content of the first embodiment, when the upper piston plate 3 moves downward first, but the lower piston column 7 moves downward with a small amplitude or even does not move, the cooperative rubber sleeve 4 will inevitably be squeezed in this process. Figure 3 The A part in the figure can be understood as the middle part of the cooperative rubber sleeve 4 being contracted and deformed. However, because the inside of the cooperative rubber sleeve 4 is always filled with the medium from the lower pressure chamber 102, the cooperative rubber sleeve 4 will also generate pressure from the inside to the outside, so that the pressure environment in the lower pressure chamber 102 will also actively interfere with the contraction and deformation of the cooperative rubber sleeve 4. The operation process of the piston assembly in the present invention is as follows:

[0040] S1: In the initial state, the pressure environment from the lower pressure chamber 102 maintains the trend of the cooperative rubber sleeve 4 to expand outward, so that the cooperative rubber sleeve 4 cooperates with the pressure top ring 11 to achieve the sealing effect at the middle end position, and refer to Figure 5 To explain: a rubber ring or the like is also added to the outer position of the upper piston plate 3 and the lower piston column 7 to maintain the initial seal, but the sealing part of the overall structure is concentrated on the pressure-bearing top ring 11 and the cooperating rubber sleeve 4;

[0041] S2: Combined with Figure 3 To explain: the upper piston plate 3 moves downward, but the positions of the side ring 5 and the pressure-bearing top ring 11 do not change, so that in the process of "normal" contraction and deformation of the cooperative rubber sleeve 4, the side ring 5 slowly moves away from the pressure-bearing part 401. In this action state, the contraction and deformation process of the cooperative rubber sleeve 4 is forced to change, so it can be understood that: the contact degree between the pressure-bearing top ring 11 and the cooperative rubber sleeve 4 is getting greater and greater, so it can be understood that the sealing performance is better, and the two will have a friction process, but it should be noted that the cooperative rubber sleeve 4 is a soft structure, and under the dual effects of the compression of the pressure-bearing top ring 11 and the internal medium pressure of the lower pressure chamber 102, it will undergo free deformation, but the two will always keep in contact, and it can even be understood that: even if the sealing performance of the rubber ring on the upper piston plate 3 is reduced, the sealing performance is still maintained by the pressure-bearing top ring 11 and the cooperative rubber sleeve 4;

[0042] S3: As for the lower piston column 7, the lower piston column 7 needs to move, which can be understood as follows: as the medium is continuously injected into the upper pressure chamber 101, the pressure on the upper piston plate 3 continues to increase, so that the medium in the cooperative rubber sleeve 4 and the lower pressure chamber 102 cannot be "compressed", then the medium filled in the cooperative rubber sleeve 4 can serve as a "connecting structure" between the upper piston plate 3 and the lower piston column 7, so that the lower piston column 7 keeps moving downward, so that the first spring 6 therein is compressed, then after the medium in the lower pressure chamber 102 is discharged, the resilience of the first spring 6 is used to reset the lower piston column 7, and the upper piston plate 3 is driven to reset again by the medium pressure in the lower pressure chamber 102, so that the cooperative rubber sleeve 4 returns to its original shape.

[0043] Embodiment 3: Combining with Embodiment 2, the press-fit plate is described again:

[0044] A pressure-fitting plate 10 is symmetrically slidably installed in the upper and lower directions on the external position inside the cooperative rubber sleeve 4 corresponding to the connecting guide rod 8, and a second spring 9 is arranged on the outer wall position of the connecting guide rod 8 corresponding to the middle position of the two pressure-fitting plates 10. The second spring 9 is respectively installed on the two pressure-fitting plates 10. The cross-sections of the pressure-fitting plates 10 are both curved arch shapes, wherein the bending direction of the pressure-fitting plate 10 located at the upper position is downward, and the bending direction of the pressure-fitting plate 10 located at the lower position is upward. The setting position of the pressure-fitting plate 10 located at the lower position is lower than the side ring 5, and the setting position of the pressure-fitting plate 10 located at the upper position is higher than the side ring 5. The sum of the maximum radius of the pressure-fitting plate 10 and the ring diameter of the side ring 5 is greater than the inner radius of the upper pressure chamber 101.

[0045] Solution description: Combined with Example 2 and Attachment Figure 4 In the process of free deformation between the cooperative rubber sleeve 4 and the pressure top ring 11, because the shrinkage deformation direction of the cooperative rubber sleeve 4 is uncertain, there is a difference in pressure between the upper and lower areas of the interior thereof with the pressure top ring 11 as the dividing line. In this state, the cooperative rubber sleeve 4 may "not cooperate" with the pressure top ring 11 to maintain contact and achieve a sealing effect. In this regard, two pressure matching plates 10 are added to the position of the connecting guide rod 8 relative to the interior of the cooperative rubber sleeve 4, and are combined again to Figure 3 and Figure 7 , because the inside of the cooperative rubber sleeve 4 is filled with the medium from the lower pressure chamber 102, the pressure-matching plate 10 at the lower position moves up relative to the pressure-matching top ring 11. In essence, the pressure-matching plate 10 at the upper position will also move up under the action of the medium pressure, but due to the influence of its structural shape, its floating degree is much smaller than that of the pressure-matching plate 10 at the lower position, and when the upper piston plate 3 continues to bear pressure, the pressure-matching plate 10 at the upper position tends to move downward, causing the second spring 9 between the two to be compressed. This part will not be explained for the time being;

[0046] It should be noted that: when the pressure-matching plate 10 at the lower side position continues to move upward, due to the limitation of its radius, the two pressure-matching plates 10 will not exceed the position of the side ring 5 during the movement process, so the content of S2 in the second embodiment is explained: the pressure-matching top ring 11 and the upper end of the cooperative rubber sleeve 4 are more and more compact, and the pressure-matching plate 10 at the lower side position continues to move upward, which can be understood as: the outside of the cooperative rubber sleeve 4 is squeezed by the pressure-matching top ring 11, and the inside is also squeezed by the pressure-matching plate 10, and the two are reinforced from bottom to top, just completely against the cooperative rubber sleeve 4, the purpose of this is to reinforce the sealing part of the cooperative rubber sleeve 4, and because the sealing part of the cooperative rubber block 4 is "movable", the pressure-matching plate 11 needs to be continuously and synchronously reinforced to prevent the sealing part from slipping;

[0047] What needs to be explained about the pressure-matching plate 10 at the upper side is that its purpose is to be inside S3 in the second embodiment. When the overall piston assembly is reset upward, the above-mentioned sealing part also needs to be reinforced, because the pressure-matching plate 10 at the lower side depends specifically on the buoyancy generated by the medium, and the pressure-matching plate 10 at the upper side can also utilize the negative pressure or its own gravity when the medium flows out of the lower pressure chamber 102. Unlike the pressure-matching plate 10 at the lower side, the pressure-matching plate 10 at the upper side and the pressure-bearing top ring 11 are reinforced from top to bottom. What needs to be explained about the side ring 5 is that it is essentially a hollow ring and can be expanded by injecting / discharging liquid or gas, mainly to further change the bearing capacity of the pressure-bearing top ring 11, and the "contact force" between the pressure-bearing top ring 5 and the cooperative rubber block 4 can be further changed by pressurizing / depressurizing the inside of the side ring 5.

[0048] In summary: the piston structure is optimized and improved, which is specifically reflected in the piston assembly formed by the upper piston plate, the lower piston column and the connecting guide rod. The overall piston assembly is significantly different from the conventional piston structure in that: under the action of the medium pressure, the piston assembly has a secondary sliding process, and the secondary sliding process is mainly used to promote the deformation process of the cooperative rubber sleeve. However, the deformation process of the cooperative rubber sleeve will also be affected by the medium pressure change in the lower pressure chamber, which can be understood as the cooperative rubber sleeve being subjected to double pressure. In this process, the pressure top ring in the side ring is used to change the friction resistance in the rubber sealing process. First, the deformation process of the cooperative rubber sleeve is assisted by the double pressure, and the two pressure matching plates are only affected by the pressure of the medium in the lower pressure chamber, which interferes with the deformation of the cooperative rubber sleeve again. The difference is that the pressure top ring and the cooperative rubber sleeve are "reinforced".

[0049] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A leak-proof adjustable booster cylinder, comprising a cylinder body (1) and a pressure sensor (2), characterized in that: A piston assembly is arranged inside the cylinder body (1), and the inside of the cylinder body (1) is divided into an upper pressure chamber (101) and a lower pressure chamber (102) arranged from top to bottom by the piston assembly; The piston assembly comprises an upper piston plate (3), a lower piston column (7) and a connecting guide rod (8); the surface area of ​​the upper piston plate (3) is larger than the surface area of ​​the lower piston column (7); the upper piston plate (3) and the lower piston column (7) are slidably connected along the vertical direction on the inner wall positions of the upper pressure chamber (101) and the lower pressure chamber (102); the upper end of the connecting guide rod (8) is fixedly connected to the upper piston plate (3), and the lower end of the connecting guide rod (8) is slidably connected to the lower piston column (7); A cooperative rubber sleeve (4) is arranged between the upper piston plate (3) and the lower piston column (7); a side ring (5) is installed at a middle position of the upper pressure chamber (101) corresponding to the cooperative rubber sleeve (4); a pressure-bearing top ring (11) is installed at a position of the side ring (5) close to the cooperative rubber sleeve (4); the sliding part of the connecting guide rod (8) and the lower piston column (7) is composed of a plurality of groups of hollow bars; the interior of the cooperative rubber sleeve (4) is hollow, and the interior of the cooperative rubber sleeve (4) is connected to the interior of the lower pressure chamber (102) through the lower piston column (7); and a pressure-bearing part (401) corresponding to the side ring (5) is arranged at the middle position of the cooperative rubber sleeve (4).

2. The leak-proof adjustable booster cylinder according to claim 1, characterized in that: A first spring (6) is arranged at an outer position of the lower piston column (7) corresponding to the lower pressure chamber (102).

3. The anti-leakage adjustable booster cylinder according to claim 1, characterized in that: The diameters of the cooperative rubber sleeve (4) at the upper and lower ends are equal, and the diameter of the cooperative rubber sleeve (4) decreases in the direction from the upper part to the middle section and from the lower part to the middle section.

4. The leak-proof adjustable booster cylinder according to claim 1, characterized in that: The interior of the side ring (5) is hollow, and the cylinder body (1) is respectively provided with a first interface, a second interface and a third interface corresponding to the upper pressure bin (101), the lower pressure bin (102) and the side ring (5), and the probe position of the pressure sensor (2) extends to the upper pressure bin (101) and the lower pressure bin (102).

5. The anti-leakage adjustable booster cylinder according to claim 1, characterized in that: The connecting guide rod (8) is provided with a pressure-matching plate (10) symmetrically slidably mounted in the up-down direction at an external position inside the cooperative rubber sleeve (4), and the connecting guide rod (8) is provided with a second spring (9) at an outer wall position corresponding to a middle position between the two pressure-matching plates (10), and the second spring (9) is respectively mounted on the two pressure-matching plates (10).

6. The anti-leakage adjustable booster cylinder according to claim 5, characterized in that: The cross-sections of the press-fit plates (10) are all in the shape of a curved arch, wherein the bending direction of the press-fit plates (10) located at the upper side is downward, and the bending direction of the press-fit plates (10) located at the lower side is upward.

7. The anti-leakage adjustable booster cylinder according to claim 6, characterized in that: The pressure-fit plate (10) located at the lower side is arranged at a position lower than the side ring (5), and the pressure-fit plate (10) located at the upper side is arranged at a position higher than the side ring (5).

8. The anti-leakage adjustable booster cylinder according to claim 6, characterized in that: The sum of the maximum radius of the press-fit plate (10) and the ring diameter of the side ring (5) is greater than the inner radius of the upper press chamber (101).

Images