High safety cloth clamping piston head

Abstract

The utility model discloses a kind of high-security cloth clamping piston heads, it is related to piston head protection technical field, including piston head main part, piston head main part outer side wall is fixedly provided with sealing ring, sealing ring is located annular inner cavity and is provided with protection mechanism, protection mechanism includes annular elastomer, annular elastomer is arranged in annular inner cavity and with annular inner cavity top wall and bottom wall abut, two buffer cavities are opened in annular elastomer inside, two buffer cavities are all provided with spring, sealing ring is located annular inner cavity and is provided with first compression ring and second compression ring.Annular elastomer generates deformation and then buffer pressure, annular elastomer is driven to buffer and reset by the elastic force effect of spring, and then improve the compression resistance of sealing ring, first compression ring and second compression ring resist tension, and then improve the tensile resistance of sealing ring, effectively avoid sealing ring to be deformed or damaged by tension, effectively avoid the sealing performance of piston head main part to be worse.

Description

Technical Field

[0001] This utility model relates to the field of piston head protection technology, specifically to a highly safe fabric-insulated piston head. Background Technology

[0002] Fabric-reinforced piston heads are key piston components in hydraulic equipment made of phenolic resin-impregnated fabric (fabric-reinforced) material, mainly used for sealing and guiding support of hydraulic cylinders in heavy machinery.

[0003] Existing fabric-reinforced piston heads are frequently subjected to impacts or axial compression from the medium during use, which can easily cause deformation, damage, or even detachment of the sealing ring, resulting in poor sealing performance and affecting the normal use of the fabric-reinforced piston head. Utility Model Content

[0004] The purpose of this invention is to provide a highly safe fabric-clamped piston head to solve the problem mentioned in the background art that the existing fabric-clamped piston head is often subjected to impact or axial compression by the medium during use, which easily causes the sealing ring of the fabric-clamped piston head to deform, break, or even fall off, thus leading to a deterioration in the sealing performance of the fabric-clamped piston head.

[0005] To achieve the above objectives, this utility model provides a high-safety fabric-reinforced piston head, comprising a piston head body, a sealing ring fixedly sleeved on the outer wall of the piston head body, an annular inner cavity formed inside the sealing ring, and a protective mechanism located within the annular inner cavity. The protective mechanism includes an annular elastic body, which is disposed within the annular inner cavity and abuts against the top and bottom walls of the annular inner cavity. Two buffer cavities are formed inside the annular elastic body, which are symmetrically arranged vertically. A spring is disposed within each of the two buffer cavities, with both ends of the spring fixed to the top and bottom walls of the buffer cavities, respectively. A first anti-compression ring and a second anti-compression ring are disposed within the annular inner cavity of the sealing ring, with the first anti-compression ring covering the outer side of the annular elastic body and the second anti-compression ring disposed inside the annular elastic body.

[0006] By adopting the above scheme, the annular elastomer deforms to buffer the pressure. The elastic force of the spring drives the annular elastomer to buffer and reset, thereby improving the buffering effect of the annular elastomer and improving the pressure resistance of the sealing ring. The first and second pressure-resistant rings resist the tensile force, thereby improving the tensile resistance of the sealing ring. This effectively prevents the sealing ring from deforming or being damaged by tensile force and effectively prevents the sealing performance of the piston head body from deteriorating.

[0007] As a further improvement to this technical solution, the piston head body sidewall is provided with a pin hole, which penetrates both sides of the piston head body sidewall.

[0008] By adopting the above scheme, the pin hole is used for axial penetration.

[0009] As a further improvement to this technical solution, the inner wall of the pin hole is provided with an oil groove, which is located near the middle of the inner wall of the pin hole.

[0010] By adopting the above solution, the position of the oil groove on the pin hole is changed so that the oil groove is closer to the middle of the inner wall of the pin hole, thereby increasing the width between the pin hole and the top of the piston head body and optimizing the overall strength of the piston head body.

[0011] As a further improvement to this technical solution, a first annular groove is provided on the outer wall of the piston head body. The first annular groove is a gas ring and is used for gas depressurization.

[0012] By adopting the above scheme, the first annular groove is used to meet the buffering requirements of high-pressure and high-temperature gas pressure relief.

[0013] As a further improvement to this technical solution, the longitudinal cross-section of both the first and second pressure-resistant rings is circular, and both the first and second pressure-resistant rings are made of steel.

[0014] By adopting the above scheme, when the sealing ring is subjected to tensile force, the first and second anti-compression rings of the steel ring structure resist the tensile force, thereby improving the tensile performance of the sealing ring and effectively preventing the sealing ring from deforming or being damaged by tensile force.

[0015] As a further improvement to this technical solution, the surface of the piston head body is coated with an anti-corrosion coating, which is a high-temperature anti-oxidation and anti-wear coating layer.

[0016] By adopting the above solution, the anti-corrosion coating can effectively improve the high temperature resistance and wear resistance of the piston head body, thereby increasing the service life of the piston head body.

[0017] As a further improvement to this technical solution, a second annular groove is provided on the outer wall of the piston head body, and an installation ring adapted to the second annular groove is fixedly provided on the inner surface of the sealing ring.

[0018] By adopting the above scheme, the second annular groove is used for the installation of the sealing ring, and the sealing performance of the sealing ring is effectively guaranteed.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This highly safe fabric-reinforced piston head incorporates a protective mechanism. The annular elastomer deforms to buffer pressure, and the elastic force of the spring drives the annular elastomer to buffer and reset, thereby improving the buffering effect of the annular elastomer and enhancing the pressure resistance of the sealing ring. This effectively prevents the sealing ring from deforming or being damaged by pressure. The first and second anti-pressure rings resist tensile forces, thereby enhancing the tensile strength of the sealing ring and effectively preventing deformation or damage to the sealing ring under tensile force. This also effectively prevents the sealing performance of the piston head body from deteriorating, thus extending the service life of the piston head body. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the piston head body of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the sealing ring of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the utility model protective mechanism;

[0025] Figure 5 For utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Piston head body; 2. Sealing ring; 3. Protective mechanism; 31. Annular elastomer; 32. Buffer chamber; 33. Spring; 34. First pressure-resistant ring; 35. Second pressure-resistant ring; 4. Pin hole; 5. Oil groove; 6. First ring groove; 7. Anti-corrosion coating; 8. Second ring groove; 9. Mounting ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Please see Figures 1-2 As shown, this utility model provides a high-safety fabric-reinforced piston head, including a piston head body 1. A sealing ring 2 is fixedly sleeved on the outer side wall of the piston head body 1. A pin hole 4 is provided on the side wall of the piston head body 1, penetrating both side walls of the piston head body 1. The pin hole 4 is used for axial penetration. An oil groove 5 is provided on the inner wall of the pin hole 4. The oil groove 5 is located near the middle of the inner wall of the pin hole 4. By changing the position of the oil groove 5 on the pin hole 4, so that the oil groove 5 is closer to the middle of the inner wall of the pin hole 4, the width of the pin hole 4 and the top of the piston head body 1 is increased, thereby optimizing the overall strength of the piston head body 1. A first annular groove 6 is provided on the side wall. The first annular groove 6 is a gas ring and is used for gas pressure relief. The first annular groove 6 is used to meet the buffering requirements of high pressure and high temperature gas pressure relief. The surface of the piston head body 1 is coated with an anti-corrosion coating 7. The anti-corrosion coating 7 is a high temperature anti-oxidation and anti-wear coating layer. The anti-corrosion coating 7 can effectively improve the high temperature resistance and wear resistance of the piston head body 1, thereby improving the service life of the piston head body 1. A second annular groove 8 is provided on the outer side wall of the piston head body 1. An installation ring 9 that matches the second annular groove 8 is fixedly provided on the inner surface of the sealing ring 2. The second annular groove 8 is used for the installation of the sealing ring 2 and effectively ensures the sealing performance of the sealing ring 2.

[0031] Please see Figures 3-5As shown, the sealing ring 2 has an annular inner cavity. A protective mechanism 3 is located within this cavity, comprising an annular elastic body 31. The annular elastic body 31 is positioned within the annular inner cavity and abuts against its top and bottom walls. Made of a highly elastic material, the sealing ring 2 compresses the annular elastic body 31 under pressure, causing it to deform and buffer the pressure. The annular elastic body 31 contains two buffer cavities 32, symmetrically arranged vertically. Each buffer cavity 32 contains a spring 33, with its ends fixed to the top and bottom walls of the respective cavities. When the annular elastic body 31 deforms, it compresses the spring 33, and the elastic force of the spring 33 drives the annular elastic body... The annular elastic body 31 performs buffering and resetting, thereby improving the buffering effect of the annular elastic body 31 and thus improving the compressive strength of the sealing ring 2, effectively preventing the sealing ring 2 from deforming or being damaged by pressure. The sealing ring 2 is provided with a first anti-compression ring 34 and a second anti-compression ring 35 in the annular cavity. The first anti-compression ring 34 covers the outside of the annular elastic body 31, and the second anti-compression ring 35 is located inside the annular elastic body 31. The longitudinal cross-section of the first anti-compression ring 34 and the second anti-compression ring 35 are both circular, and both the first anti-compression ring 34 and the second anti-compression ring 35 are made of steel. When the sealing ring 2 is subjected to tensile force, the first anti-compression ring 34 and the second anti-compression ring 35 of the steel ring structure resist the tensile force, thereby improving the tensile strength of the sealing ring 2 and effectively preventing the sealing ring 2 from deforming or being damaged by tensile force.

[0032] The specific working principle of this utility model is as follows: When the sealing ring 2 is subjected to pressure, it compresses the annular elastic body 31, causing the annular elastic body 31 to deform and thus buffer the pressure. When the annular elastic body 31 deforms, it compresses the spring 33. Through the elastic force of the spring 33, the annular elastic body 31 is driven to buffer and reset, thereby improving the buffering effect of the annular elastic body 31 and thus improving the compressive strength of the sealing ring 2, effectively preventing the sealing ring 2 from deforming or being damaged by pressure. When the sealing ring 2 is subjected to tensile force, the first anti-compression ring 34 and the second anti-compression ring 35 of the steel ring structure resist the tensile force, thereby improving the tensile strength of the sealing ring 2 and effectively preventing the sealing ring 2 from deforming or being damaged by tensile force, effectively preventing the sealing performance of the piston head body 1 from deteriorating, and thus improving the service life of the piston head body 1.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-safety fabric-insulated piston head, comprising a piston head body (1), wherein a sealing ring (2) is fixedly sleeved on the outer wall of the piston head body (1), characterized in that: The sealing ring (2) has an annular inner cavity. The sealing ring (2) is provided with a protective mechanism (3) in the annular inner cavity. The protective mechanism (3) includes an annular elastomer (31). The annular elastomer (31) is disposed in the annular inner cavity and abuts against the top and bottom walls of the annular inner cavity. The annular elastomer (31) has two buffer cavities (32) inside. The two buffer cavities (32) are arranged symmetrically above and below. Each of the two buffer cavities (32) is provided with a spring (33). The two ends of the spring (33) are fixed to the top and bottom walls of the buffer cavity (32) respectively. The sealing ring (2) is provided with a first pressure-resistant ring (34) and a second pressure-resistant ring (35) in the annular inner cavity. The first pressure-resistant ring (34) covers the outside of the annular elastomer (31), and the second pressure-resistant ring (35) is disposed inside the annular elastomer (31).

2. The high-safety fabric-clamping piston head according to claim 1, characterized in that: The piston head body (1) has a pin hole (4) on its side wall, and the pin hole (4) passes through both sides of the piston head body (1).

3. The high-safety fabric-clamping piston head according to claim 2, characterized in that: The inner wall of the pin hole (4) is provided with an oil groove (5), which is located near the middle of the inner wall of the pin hole (4).

4. The high-safety fabric-clamping piston head according to claim 1, characterized in that: The piston head body (1) has a first annular groove (6) on its outer side wall. The first annular groove (6) is a gas ring and is used for gas depressurization.

5. A high-safety fabric-clamping piston head according to claim 1, characterized in that: The longitudinal cross-sections of the first compression ring (34) and the second compression ring (35) are both circular, and both the first compression ring (34) and the second compression ring (35) are made of steel.

6. The high-safety fabric-clamping piston head according to claim 1, characterized in that: The piston head body (1) is coated with an anti-corrosion coating (7), which is a high-temperature anti-oxidation and anti-wear coating layer.

7. A high-safety fabric-clamping piston head according to claim 1, characterized in that: The piston head body (1) has a second annular groove (8) on its outer side wall, and the inner surface of the sealing ring (2) is fixedly provided with an installation ring (9) that is compatible with the second annular groove (8).

Images