Device for enhancing dynamic stability of static pressure supporting oil cylinder

Abstract

The utility model discloses a device for enhancing dynamic stability of a static pressure supporting oil cylinder, which belongs to the technical field of supporting oil cylinders and comprises a sealing ring, a sealing hole is arranged at the inner axis of the sealing ring, and a plurality of groups of sealing protrusions are arranged on the hole wall of the sealing hole at equal intervals along the vertical direction of the sealing hole. Each set of sealing protrusions are annularly arranged on the hole wall of the sealing hole, an annular containing groove is formed in the surface of the sealing ring, a metal sealing ring is arranged in the containing groove, and a fixing pad matched with the outer wall of the metal sealing ring is arranged on the inner wall of the containing groove; a gap is formed between the hole wall and a sealed part in the oil cylinder through the annular protrusion arranged on the hole wall of the sealing hole, the sealing effect of the device and the sealed part in the oil cylinder is greatly improved through multi-layer interval sealing, in addition, the metal sealing ring is arranged in the sealing ring, the metal sealing ring can increase the overall structural rigidity of the device, and the sealing performance of the oil cylinder is improved. The sealing effect is improved; and the sealing performance is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a device for enhancing the dynamic stability of hydrostatic hydraulic cylinders. Background Technology

[0002] A hydraulic cylinder, also known as a hydraulic cylinder, is a linear motion actuator whose output force is proportional to the effective area of ​​the piston and the pressure difference across it. Its function is to convert hydraulic energy into mechanical energy. The input to a hydraulic cylinder is the flow rate and pressure of the fluid, and the output is linear motion speed and force. The piston of a hydraulic cylinder can perform linear reciprocating motion, but the output linear displacement is finite. A hydraulic cylinder is an energy conversion device that converts hydraulic energy into reciprocating linear motion mechanical energy. As a type of ordinary hydraulic cylinder, the hydrostatic support cylinder has a welded bottom structure with an axial bevel on the weld seam, and usually incorporates internal sealing rings to enhance its dynamic stability.

[0003] Most existing sealing rings have smooth inner walls and are in direct contact with the sealed parts inside the cylinder, which cannot meet the requirements for high sealing performance.

[0004] Therefore, those skilled in the art have provided a device to enhance the dynamic stability of hydrostatic support cylinders in order to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a device for enhancing the dynamic stability of hydrostatic support cylinders, thereby addressing the shortcomings mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a device for enhancing the dynamic stability of a hydrostatic support cylinder, including a sealing ring. A sealing hole is provided at the inner axis of the sealing ring. Several sets of sealing protrusions are equidistantly arranged on the wall of the sealing hole along its vertical direction. Each set of sealing protrusions is arranged in a ring on the wall of the sealing hole. An annular receiving groove is provided on the surface of the sealing ring. A metal sealing ring is provided inside the receiving groove. A fixing pad that matches the outer wall of the metal sealing ring is provided on the inner wall of the receiving groove.

[0008] Preferably, the inner cavity bottom wall of the storage groove is provided with buffer pads that are adapted to the bottom wall of the metal sealing ring at equal intervals, and the inner cavity top of the storage groove is provided with a limiting pad.

[0009] Preferably, an outer sealing ring is fitted onto the outer wall of the sealing ring, and the outer sealing ring is made of pure fluororubber material.

[0010] Preferably, the outer wall of the outer sealing ring is fitted with an anti-corrosion layer, which is made of fluoroplastic material.

[0011] Preferably, a waterproof gasket is provided on the top of the sealing ring, the waterproof gasket is located outside the sealing hole, a guide gasket is provided on the top of the waterproof gasket, and a water collection groove is provided on the outer side of the waterproof gasket.

[0012] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0013] This utility model provides a device to enhance the dynamic stability of a hydrostatic support cylinder. The annular protrusion on the sealing hole wall creates a gap between the hole wall and the sealed component inside the cylinder. The multi-layered interval sealing greatly improves the sealing effect between the device itself and the sealed component inside the cylinder. In addition, a metal sealing ring is set inside the sealing ring, which can increase the overall structural rigidity of the device, thereby improving the sealing effect and strengthening the sealing performance. Attached Figure Description

[0014] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the internal structure of the main view of this utility model;

[0016] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a utility model Figure 1 Enlarged view of point B in the middle;

[0018] Figure 4 This is a top view of the internal structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the waterproof pad of this utility model.

[0020] In the diagram: 1. Sealing ring; 2. Sealing hole; 3. Sealing protrusion; 4. Receiving groove; 5. Metal sealing ring; 6. Fixing pad; 7. Buffer pad; 8. Limiting pad; 9. Outer sealing ring; 10. Anti-corrosion layer; 11. Waterproof pad; 12. Guide pad; 13. Water collection tank. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0026] As shown in the attached diagram of the instruction manual. Figures 1-5As shown, this utility model provides a device for enhancing the dynamic stability of a hydrostatic support cylinder, including a sealing ring 1. A sealing hole 2 is formed at the inner axis of the sealing ring 1. Several sets of sealing protrusions 3 are equidistantly arranged on the wall of the sealing hole 2 along its vertical direction. Each set of sealing protrusions 3 is annularly arranged on the wall of the sealing hole 2. An annular receiving groove 4 is formed on the surface of the sealing ring 1. A metal sealing ring 5 is disposed inside the receiving groove 4. A fixing pad 6, which is adapted to the outer wall of the metal sealing ring 5, is disposed on the inner wall of the receiving groove 4. In specific implementation, the metal sealing ring 5 is placed in the receiving groove. 4. Then, the sealing ring is fitted onto the sealed part inside the oil cylinder through the sealing hole 2. The sealing protrusion 3 achieves a gap seal between the two, thereby improving the sealing effect. It can be seen that the present invention uses the annular protrusion set on the hole wall of the sealing hole 2 to create a gap between the hole wall and the sealed part inside the oil cylinder. The multi-layer gap seal greatly improves the sealing effect between the device itself and the sealed part inside the oil cylinder. In addition, a metal sealing ring 5 is set in the sealing ring 1. The metal sealing ring 5 can increase the overall structural rigidity of the device, thereby improving the sealing effect and strengthening the sealing performance.

[0027] As a preferred embodiment of this utility model, it is therefore preferred that, as Figure 2 , Figure 3 As shown, buffer pads 7 that are adapted to the bottom wall of the metal sealing ring 5 are equidistantly arranged on the bottom wall of the inner cavity of the storage groove 4. A limiting pad 8 is provided on the top of the inner cavity of the storage groove 4. When the metal sealing ring 5 falls into the storage groove 4, the buffer pads 7 can buffer its weight, and the limiting pad 8 can limit the metal sealing ring 5 so that it will not easily pop out of the storage groove 4.

[0028] As a preferred embodiment of this utility model, it is therefore preferred that, as Figure 1 , Figure 5 As shown, an outer sealing ring 9 is fitted onto the outer wall of the sealing ring 1. The outer sealing ring 9 is made of pure fluororubber material. Pure fluororubber can be used as a wear-resistant and insulating material, which can improve the wear resistance and corrosion resistance of the outer sealing ring 9.

[0029] As a preferred embodiment of this utility model, it is therefore preferred that, as Figure 1 , Figure 5 As shown, an anti-corrosion layer 10 is attached to the outer wall of the outer sealing ring 9. The anti-corrosion layer 10 is made of fluoroplastic material. The anti-corrosion layer 10 of this utility model has a good isolation and anti-corrosion effect, thereby extending the service life of the device.

[0030] As a preferred embodiment of this utility model, it is therefore preferred that, as Figure 1 , Figure 3As shown, a waterproof gasket 11 is provided on the top of the sealing ring 1. The waterproof gasket 11 is located outside the sealing hole 2. A guide gasket 12 is provided on the top of the waterproof gasket 11. A water collection groove 13 is provided on the outer side of the waterproof gasket 11. In specific implementation, if water drips from the sealed part from above, the water will fall into the water collection groove 13 through the guide gasket 12, thereby collecting the water in the groove.

[0031] Working principle: As shown in the attached diagram in the instruction manual. Figures 1-5 As shown, the metal sealing ring 5 is first placed in the storage groove 4, and then the sealing ring is fitted onto the sealed part inside the oil cylinder through the sealing hole 2. The sealing protrusion 3 achieves the gap sealing between the two, thereby improving the sealing effect. In addition, the waterproof gasket 11 and the guide gasket 12 are used to pour the accidental seepage water dripping from the sealing ring 1 into the water collection tank 13 for collection. The anti-corrosion layer 10 can improve the anti-corrosion performance of the sealing ring 1 itself.

[0032] The above description is merely a preferred embodiment of this utility model. Any parts not described herein can be implemented using or by referencing existing technologies. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

Claims

1. A device for enhancing the dynamic stability of a hydrostatic support cylinder, comprising a seal ring (1), characterized in that, The sealing ring (1) is provided with a sealing hole (2) at the inner axis, the hole wall of the sealing hole (2) is provided with a plurality of groups of sealing protrusions (3) equidistantly along the vertical direction, each group of the sealing protrusions (3) is annularly arranged on the hole wall of the sealing hole (2), the surface of the sealing ring (1) is provided with an annular receiving groove (4), the receiving groove (4) is provided with a metal sealing ring (5) inside, and the inner wall of the receiving groove (4) is provided with a fixed pad (6) matched with the outer wall of the metal sealing ring (5).

2. The device for enhancing the dynamic stability of a hydrostatic support oil cylinder according to claim 1, characterized in that: The inner cavity bottom wall of the receiving groove (4) is provided with a buffer pad (7) matched with the bottom wall of the metal sealing ring (5), and the inner cavity top of the receiving groove (4) is provided with a limiting pad (8).

3. The device for enhancing the dynamic stability of a hydrostatic support oil cylinder according to claim 1, characterized in that: The outer wall of the sealing ring (1) is attached with an outer sealing ring (9), and the outer sealing ring (9) is made of pure fluorine glue material.

4. The device for enhancing the dynamic stability of a hydrostatic support cylinder according to claim 3, characterized in that: The outer wall of the outer sealing ring (9) is attached with a corrosion-resistant layer (10), and the corrosion-resistant layer (10) is made of fluoroplastic material.

5. The device for enhancing the dynamic stability of a hydrostatic support cylinder according to claim 1, characterized in that: The top of the sealing ring (1) is provided with a waterproof pad (11), the waterproof pad (11) is located outside the sealing hole (2), the top of the waterproof pad (11) is provided with a guide pad (12), and the outer side of the waterproof pad (11) is provided with a water collecting groove (13).

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